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Add Opus

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def 2014-10-27 09:22:52 +01:00
parent 28d276cd7e
commit a7dafa40c7
297 changed files with 50132 additions and 1 deletions
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16
bam.lua
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@ -181,6 +181,19 @@ function build(settings)
end
end
opus_settings = settings:Copy()
opus_settings.cc.flags:Add("-DHAVE_CONFIG_H")
opus_settings.cc.includes:Add("src/engine/external/opus/")
opus_settings.cc.includes:Add("src/engine/external/opus/celt/")
opus_settings.cc.includes:Add("src/engine/external/opus/silk/")
opus_settings.cc.includes:Add("src/engine/external/opus/silk/float/")
opus_settings.cc.includes:Add("src/engine/external/opus/silk/fixed/")
opus_settings.cc.includes:Add("src/engine/external/opus/silk/arm/")
opus_settings.cc.includes:Add("src/engine/external/opus/celt/arm/")
opus_settings.cc.includes:Add("src/engine/external/opus/celt/x86/")
-- set some platform specific settings
settings.cc.includes:Add("src")
settings.cc.includes:Add("other/mysql/include")
@ -225,6 +238,7 @@ function build(settings)
pnglite = Compile(settings, Collect("src/engine/external/pnglite/*.c"))
jsonparser = Compile(settings, Collect("src/engine/external/json-parser/*.c"))
ogg = Compile(settings, Collect("src/engine/external/ogg/*.c"))
opus= Compile(opus_settings, Collect("src/engine/external/opus/*.c", "src/engine/external/opus/celt/*.c", "src/engine/external/opus/silk/*.c"))
-- build game components
engine_settings = settings:Copy()
@ -310,7 +324,7 @@ function build(settings)
-- build client, server, version server and master server
client_exe = Link(client_settings, "DDNet", game_shared, game_client,
engine, client, game_editor, zlib, pnglite, wavpack, ogg,
engine, client, game_editor, zlib, pnglite, wavpack, ogg, opus,
client_link_other, client_osxlaunch, jsonparser)
server_exe = Link(server_settings, "DDNet-Server", engine, server,

645
src/engine/external/opus/analysis.c vendored Normal file
View file

@ -0,0 +1,645 @@
/* Copyright (c) 2011 Xiph.Org Foundation
Written by Jean-Marc Valin */
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "kiss_fft.h"
#include "celt.h"
#include "modes.h"
#include "arch.h"
#include "quant_bands.h"
#include <stdio.h>
#include "analysis.h"
#include "mlp.h"
#include "stack_alloc.h"
extern const MLP net;
#ifndef M_PI
#define M_PI 3.141592653
#endif
static const float dct_table[128] = {
0.250000f, 0.250000f, 0.250000f, 0.250000f, 0.250000f, 0.250000f, 0.250000f, 0.250000f,
0.250000f, 0.250000f, 0.250000f, 0.250000f, 0.250000f, 0.250000f, 0.250000f, 0.250000f,
0.351851f, 0.338330f, 0.311806f, 0.273300f, 0.224292f, 0.166664f, 0.102631f, 0.034654f,
-0.034654f,-0.102631f,-0.166664f,-0.224292f,-0.273300f,-0.311806f,-0.338330f,-0.351851f,
0.346760f, 0.293969f, 0.196424f, 0.068975f,-0.068975f,-0.196424f,-0.293969f,-0.346760f,
-0.346760f,-0.293969f,-0.196424f,-0.068975f, 0.068975f, 0.196424f, 0.293969f, 0.346760f,
0.338330f, 0.224292f, 0.034654f,-0.166664f,-0.311806f,-0.351851f,-0.273300f,-0.102631f,
0.102631f, 0.273300f, 0.351851f, 0.311806f, 0.166664f,-0.034654f,-0.224292f,-0.338330f,
0.326641f, 0.135299f,-0.135299f,-0.326641f,-0.326641f,-0.135299f, 0.135299f, 0.326641f,
0.326641f, 0.135299f,-0.135299f,-0.326641f,-0.326641f,-0.135299f, 0.135299f, 0.326641f,
0.311806f, 0.034654f,-0.273300f,-0.338330f,-0.102631f, 0.224292f, 0.351851f, 0.166664f,
-0.166664f,-0.351851f,-0.224292f, 0.102631f, 0.338330f, 0.273300f,-0.034654f,-0.311806f,
0.293969f,-0.068975f,-0.346760f,-0.196424f, 0.196424f, 0.346760f, 0.068975f,-0.293969f,
-0.293969f, 0.068975f, 0.346760f, 0.196424f,-0.196424f,-0.346760f,-0.068975f, 0.293969f,
0.273300f,-0.166664f,-0.338330f, 0.034654f, 0.351851f, 0.102631f,-0.311806f,-0.224292f,
0.224292f, 0.311806f,-0.102631f,-0.351851f,-0.034654f, 0.338330f, 0.166664f,-0.273300f,
};
static const float analysis_window[240] = {
0.000043f, 0.000171f, 0.000385f, 0.000685f, 0.001071f, 0.001541f, 0.002098f, 0.002739f,
0.003466f, 0.004278f, 0.005174f, 0.006156f, 0.007222f, 0.008373f, 0.009607f, 0.010926f,
0.012329f, 0.013815f, 0.015385f, 0.017037f, 0.018772f, 0.020590f, 0.022490f, 0.024472f,
0.026535f, 0.028679f, 0.030904f, 0.033210f, 0.035595f, 0.038060f, 0.040604f, 0.043227f,
0.045928f, 0.048707f, 0.051564f, 0.054497f, 0.057506f, 0.060591f, 0.063752f, 0.066987f,
0.070297f, 0.073680f, 0.077136f, 0.080665f, 0.084265f, 0.087937f, 0.091679f, 0.095492f,
0.099373f, 0.103323f, 0.107342f, 0.111427f, 0.115579f, 0.119797f, 0.124080f, 0.128428f,
0.132839f, 0.137313f, 0.141849f, 0.146447f, 0.151105f, 0.155823f, 0.160600f, 0.165435f,
0.170327f, 0.175276f, 0.180280f, 0.185340f, 0.190453f, 0.195619f, 0.200838f, 0.206107f,
0.211427f, 0.216797f, 0.222215f, 0.227680f, 0.233193f, 0.238751f, 0.244353f, 0.250000f,
0.255689f, 0.261421f, 0.267193f, 0.273005f, 0.278856f, 0.284744f, 0.290670f, 0.296632f,
0.302628f, 0.308658f, 0.314721f, 0.320816f, 0.326941f, 0.333097f, 0.339280f, 0.345492f,
0.351729f, 0.357992f, 0.364280f, 0.370590f, 0.376923f, 0.383277f, 0.389651f, 0.396044f,
0.402455f, 0.408882f, 0.415325f, 0.421783f, 0.428254f, 0.434737f, 0.441231f, 0.447736f,
0.454249f, 0.460770f, 0.467298f, 0.473832f, 0.480370f, 0.486912f, 0.493455f, 0.500000f,
0.506545f, 0.513088f, 0.519630f, 0.526168f, 0.532702f, 0.539230f, 0.545751f, 0.552264f,
0.558769f, 0.565263f, 0.571746f, 0.578217f, 0.584675f, 0.591118f, 0.597545f, 0.603956f,
0.610349f, 0.616723f, 0.623077f, 0.629410f, 0.635720f, 0.642008f, 0.648271f, 0.654508f,
0.660720f, 0.666903f, 0.673059f, 0.679184f, 0.685279f, 0.691342f, 0.697372f, 0.703368f,
0.709330f, 0.715256f, 0.721144f, 0.726995f, 0.732807f, 0.738579f, 0.744311f, 0.750000f,
0.755647f, 0.761249f, 0.766807f, 0.772320f, 0.777785f, 0.783203f, 0.788573f, 0.793893f,
0.799162f, 0.804381f, 0.809547f, 0.814660f, 0.819720f, 0.824724f, 0.829673f, 0.834565f,
0.839400f, 0.844177f, 0.848895f, 0.853553f, 0.858151f, 0.862687f, 0.867161f, 0.871572f,
0.875920f, 0.880203f, 0.884421f, 0.888573f, 0.892658f, 0.896677f, 0.900627f, 0.904508f,
0.908321f, 0.912063f, 0.915735f, 0.919335f, 0.922864f, 0.926320f, 0.929703f, 0.933013f,
0.936248f, 0.939409f, 0.942494f, 0.945503f, 0.948436f, 0.951293f, 0.954072f, 0.956773f,
0.959396f, 0.961940f, 0.964405f, 0.966790f, 0.969096f, 0.971321f, 0.973465f, 0.975528f,
0.977510f, 0.979410f, 0.981228f, 0.982963f, 0.984615f, 0.986185f, 0.987671f, 0.989074f,
0.990393f, 0.991627f, 0.992778f, 0.993844f, 0.994826f, 0.995722f, 0.996534f, 0.997261f,
0.997902f, 0.998459f, 0.998929f, 0.999315f, 0.999615f, 0.999829f, 0.999957f, 1.000000f,
};
static const int tbands[NB_TBANDS+1] = {
2, 4, 6, 8, 10, 12, 14, 16, 20, 24, 28, 32, 40, 48, 56, 68, 80, 96, 120
};
static const int extra_bands[NB_TOT_BANDS+1] = {
1, 2, 4, 6, 8, 10, 12, 14, 16, 20, 24, 28, 32, 40, 48, 56, 68, 80, 96, 120, 160, 200
};
/*static const float tweight[NB_TBANDS+1] = {
.3, .4, .5, .6, .7, .8, .9, 1., 1., 1., 1., 1., 1., 1., .8, .7, .6, .5
};*/
#define NB_TONAL_SKIP_BANDS 9
#define cA 0.43157974f
#define cB 0.67848403f
#define cC 0.08595542f
#define cE ((float)M_PI/2)
static OPUS_INLINE float fast_atan2f(float y, float x) {
float x2, y2;
/* Should avoid underflow on the values we'll get */
if (ABS16(x)+ABS16(y)<1e-9f)
{
x*=1e12f;
y*=1e12f;
}
x2 = x*x;
y2 = y*y;
if(x2<y2){
float den = (y2 + cB*x2) * (y2 + cC*x2);
if (den!=0)
return -x*y*(y2 + cA*x2) / den + (y<0 ? -cE : cE);
else
return (y<0 ? -cE : cE);
}else{
float den = (x2 + cB*y2) * (x2 + cC*y2);
if (den!=0)
return x*y*(x2 + cA*y2) / den + (y<0 ? -cE : cE) - (x*y<0 ? -cE : cE);
else
return (y<0 ? -cE : cE) - (x*y<0 ? -cE : cE);
}
}
void tonality_get_info(TonalityAnalysisState *tonal, AnalysisInfo *info_out, int len)
{
int pos;
int curr_lookahead;
float psum;
int i;
pos = tonal->read_pos;
curr_lookahead = tonal->write_pos-tonal->read_pos;
if (curr_lookahead<0)
curr_lookahead += DETECT_SIZE;
if (len > 480 && pos != tonal->write_pos)
{
pos++;
if (pos==DETECT_SIZE)
pos=0;
}
if (pos == tonal->write_pos)
pos--;
if (pos<0)
pos = DETECT_SIZE-1;
OPUS_COPY(info_out, &tonal->info[pos], 1);
tonal->read_subframe += len/120;
while (tonal->read_subframe>=4)
{
tonal->read_subframe -= 4;
tonal->read_pos++;
}
if (tonal->read_pos>=DETECT_SIZE)
tonal->read_pos-=DETECT_SIZE;
/* Compensate for the delay in the features themselves.
FIXME: Need a better estimate the 10 I just made up */
curr_lookahead = IMAX(curr_lookahead-10, 0);
psum=0;
/* Summing the probability of transition patterns that involve music at
time (DETECT_SIZE-curr_lookahead-1) */
for (i=0;i<DETECT_SIZE-curr_lookahead;i++)
psum += tonal->pmusic[i];
for (;i<DETECT_SIZE;i++)
psum += tonal->pspeech[i];
psum = psum*tonal->music_confidence + (1-psum)*tonal->speech_confidence;
/*printf("%f %f %f\n", psum, info_out->music_prob, info_out->tonality);*/
info_out->music_prob = psum;
}
void tonality_analysis(TonalityAnalysisState *tonal, AnalysisInfo *info_out, const CELTMode *celt_mode, const void *x, int len, int offset, int c1, int c2, int C, int lsb_depth, downmix_func downmix)
{
int i, b;
const kiss_fft_state *kfft;
VARDECL(kiss_fft_cpx, in);
VARDECL(kiss_fft_cpx, out);
int N = 480, N2=240;
float * OPUS_RESTRICT A = tonal->angle;
float * OPUS_RESTRICT dA = tonal->d_angle;
float * OPUS_RESTRICT d2A = tonal->d2_angle;
VARDECL(float, tonality);
VARDECL(float, noisiness);
float band_tonality[NB_TBANDS];
float logE[NB_TBANDS];
float BFCC[8];
float features[25];
float frame_tonality;
float max_frame_tonality;
/*float tw_sum=0;*/
float frame_noisiness;
const float pi4 = (float)(M_PI*M_PI*M_PI*M_PI);
float slope=0;
float frame_stationarity;
float relativeE;
float frame_probs[2];
float alpha, alphaE, alphaE2;
float frame_loudness;
float bandwidth_mask;
int bandwidth=0;
float maxE = 0;
float noise_floor;
int remaining;
AnalysisInfo *info;
SAVE_STACK;
tonal->last_transition++;
alpha = 1.f/IMIN(20, 1+tonal->count);
alphaE = 1.f/IMIN(50, 1+tonal->count);
alphaE2 = 1.f/IMIN(1000, 1+tonal->count);
if (tonal->count<4)
tonal->music_prob = .5;
kfft = celt_mode->mdct.kfft[0];
if (tonal->count==0)
tonal->mem_fill = 240;
downmix(x, &tonal->inmem[tonal->mem_fill], IMIN(len, ANALYSIS_BUF_SIZE-tonal->mem_fill), offset, c1, c2, C);
if (tonal->mem_fill+len < ANALYSIS_BUF_SIZE)
{
tonal->mem_fill += len;
/* Don't have enough to update the analysis */
RESTORE_STACK;
return;
}
info = &tonal->info[tonal->write_pos++];
if (tonal->write_pos>=DETECT_SIZE)
tonal->write_pos-=DETECT_SIZE;
ALLOC(in, 480, kiss_fft_cpx);
ALLOC(out, 480, kiss_fft_cpx);
ALLOC(tonality, 240, float);
ALLOC(noisiness, 240, float);
for (i=0;i<N2;i++)
{
float w = analysis_window[i];
in[i].r = (kiss_fft_scalar)(w*tonal->inmem[i]);
in[i].i = (kiss_fft_scalar)(w*tonal->inmem[N2+i]);
in[N-i-1].r = (kiss_fft_scalar)(w*tonal->inmem[N-i-1]);
in[N-i-1].i = (kiss_fft_scalar)(w*tonal->inmem[N+N2-i-1]);
}
OPUS_MOVE(tonal->inmem, tonal->inmem+ANALYSIS_BUF_SIZE-240, 240);
remaining = len - (ANALYSIS_BUF_SIZE-tonal->mem_fill);
downmix(x, &tonal->inmem[240], remaining, offset+ANALYSIS_BUF_SIZE-tonal->mem_fill, c1, c2, C);
tonal->mem_fill = 240 + remaining;
opus_fft(kfft, in, out);
for (i=1;i<N2;i++)
{
float X1r, X2r, X1i, X2i;
float angle, d_angle, d2_angle;
float angle2, d_angle2, d2_angle2;
float mod1, mod2, avg_mod;
X1r = (float)out[i].r+out[N-i].r;
X1i = (float)out[i].i-out[N-i].i;
X2r = (float)out[i].i+out[N-i].i;
X2i = (float)out[N-i].r-out[i].r;
angle = (float)(.5f/M_PI)*fast_atan2f(X1i, X1r);
d_angle = angle - A[i];
d2_angle = d_angle - dA[i];
angle2 = (float)(.5f/M_PI)*fast_atan2f(X2i, X2r);
d_angle2 = angle2 - angle;
d2_angle2 = d_angle2 - d_angle;
mod1 = d2_angle - (float)floor(.5+d2_angle);
noisiness[i] = ABS16(mod1);
mod1 *= mod1;
mod1 *= mod1;
mod2 = d2_angle2 - (float)floor(.5+d2_angle2);
noisiness[i] += ABS16(mod2);
mod2 *= mod2;
mod2 *= mod2;
avg_mod = .25f*(d2A[i]+2.f*mod1+mod2);
tonality[i] = 1.f/(1.f+40.f*16.f*pi4*avg_mod)-.015f;
A[i] = angle2;
dA[i] = d_angle2;
d2A[i] = mod2;
}
frame_tonality = 0;
max_frame_tonality = 0;
/*tw_sum = 0;*/
info->activity = 0;
frame_noisiness = 0;
frame_stationarity = 0;
if (!tonal->count)
{
for (b=0;b<NB_TBANDS;b++)
{
tonal->lowE[b] = 1e10;
tonal->highE[b] = -1e10;
}
}
relativeE = 0;
frame_loudness = 0;
for (b=0;b<NB_TBANDS;b++)
{
float E=0, tE=0, nE=0;
float L1, L2;
float stationarity;
for (i=tbands[b];i<tbands[b+1];i++)
{
float binE = out[i].r*(float)out[i].r + out[N-i].r*(float)out[N-i].r
+ out[i].i*(float)out[i].i + out[N-i].i*(float)out[N-i].i;
#ifdef FIXED_POINT
/* FIXME: It's probably best to change the BFCC filter initial state instead */
binE *= 5.55e-17f;
#endif
E += binE;
tE += binE*tonality[i];
nE += binE*2.f*(.5f-noisiness[i]);
}
tonal->E[tonal->E_count][b] = E;
frame_noisiness += nE/(1e-15f+E);
frame_loudness += (float)sqrt(E+1e-10f);
logE[b] = (float)log(E+1e-10f);
tonal->lowE[b] = MIN32(logE[b], tonal->lowE[b]+.01f);
tonal->highE[b] = MAX32(logE[b], tonal->highE[b]-.1f);
if (tonal->highE[b] < tonal->lowE[b]+1.f)
{
tonal->highE[b]+=.5f;
tonal->lowE[b]-=.5f;
}
relativeE += (logE[b]-tonal->lowE[b])/(1e-15f+tonal->highE[b]-tonal->lowE[b]);
L1=L2=0;
for (i=0;i<NB_FRAMES;i++)
{
L1 += (float)sqrt(tonal->E[i][b]);
L2 += tonal->E[i][b];
}
stationarity = MIN16(0.99f,L1/(float)sqrt(1e-15+NB_FRAMES*L2));
stationarity *= stationarity;
stationarity *= stationarity;
frame_stationarity += stationarity;
/*band_tonality[b] = tE/(1e-15+E)*/;
band_tonality[b] = MAX16(tE/(1e-15f+E), stationarity*tonal->prev_band_tonality[b]);
#if 0
if (b>=NB_TONAL_SKIP_BANDS)
{
frame_tonality += tweight[b]*band_tonality[b];
tw_sum += tweight[b];
}
#else
frame_tonality += band_tonality[b];
if (b>=NB_TBANDS-NB_TONAL_SKIP_BANDS)
frame_tonality -= band_tonality[b-NB_TBANDS+NB_TONAL_SKIP_BANDS];
#endif
max_frame_tonality = MAX16(max_frame_tonality, (1.f+.03f*(b-NB_TBANDS))*frame_tonality);
slope += band_tonality[b]*(b-8);
/*printf("%f %f ", band_tonality[b], stationarity);*/
tonal->prev_band_tonality[b] = band_tonality[b];
}
bandwidth_mask = 0;
bandwidth = 0;
maxE = 0;
noise_floor = 5.7e-4f/(1<<(IMAX(0,lsb_depth-8)));
#ifdef FIXED_POINT
noise_floor *= 1<<(15+SIG_SHIFT);
#endif
noise_floor *= noise_floor;
for (b=0;b<NB_TOT_BANDS;b++)
{
float E=0;
int band_start, band_end;
/* Keep a margin of 300 Hz for aliasing */
band_start = extra_bands[b];
band_end = extra_bands[b+1];
for (i=band_start;i<band_end;i++)
{
float binE = out[i].r*(float)out[i].r + out[N-i].r*(float)out[N-i].r
+ out[i].i*(float)out[i].i + out[N-i].i*(float)out[N-i].i;
E += binE;
}
maxE = MAX32(maxE, E);
tonal->meanE[b] = MAX32((1-alphaE2)*tonal->meanE[b], E);
E = MAX32(E, tonal->meanE[b]);
/* Use a simple follower with 13 dB/Bark slope for spreading function */
bandwidth_mask = MAX32(.05f*bandwidth_mask, E);
/* Consider the band "active" only if all these conditions are met:
1) less than 10 dB below the simple follower
2) less than 90 dB below the peak band (maximal masking possible considering
both the ATH and the loudness-dependent slope of the spreading function)
3) above the PCM quantization noise floor
*/
if (E>.1*bandwidth_mask && E*1e9f > maxE && E > noise_floor*(band_end-band_start))
bandwidth = b;
}
if (tonal->count<=2)
bandwidth = 20;
frame_loudness = 20*(float)log10(frame_loudness);
tonal->Etracker = MAX32(tonal->Etracker-.03f, frame_loudness);
tonal->lowECount *= (1-alphaE);
if (frame_loudness < tonal->Etracker-30)
tonal->lowECount += alphaE;
for (i=0;i<8;i++)
{
float sum=0;
for (b=0;b<16;b++)
sum += dct_table[i*16+b]*logE[b];
BFCC[i] = sum;
}
frame_stationarity /= NB_TBANDS;
relativeE /= NB_TBANDS;
if (tonal->count<10)
relativeE = .5;
frame_noisiness /= NB_TBANDS;
#if 1
info->activity = frame_noisiness + (1-frame_noisiness)*relativeE;
#else
info->activity = .5*(1+frame_noisiness-frame_stationarity);
#endif
frame_tonality = (max_frame_tonality/(NB_TBANDS-NB_TONAL_SKIP_BANDS));
frame_tonality = MAX16(frame_tonality, tonal->prev_tonality*.8f);
tonal->prev_tonality = frame_tonality;
slope /= 8*8;
info->tonality_slope = slope;
tonal->E_count = (tonal->E_count+1)%NB_FRAMES;
tonal->count++;
info->tonality = frame_tonality;
for (i=0;i<4;i++)
features[i] = -0.12299f*(BFCC[i]+tonal->mem[i+24]) + 0.49195f*(tonal->mem[i]+tonal->mem[i+16]) + 0.69693f*tonal->mem[i+8] - 1.4349f*tonal->cmean[i];
for (i=0;i<4;i++)
tonal->cmean[i] = (1-alpha)*tonal->cmean[i] + alpha*BFCC[i];
for (i=0;i<4;i++)
features[4+i] = 0.63246f*(BFCC[i]-tonal->mem[i+24]) + 0.31623f*(tonal->mem[i]-tonal->mem[i+16]);
for (i=0;i<3;i++)
features[8+i] = 0.53452f*(BFCC[i]+tonal->mem[i+24]) - 0.26726f*(tonal->mem[i]+tonal->mem[i+16]) -0.53452f*tonal->mem[i+8];
if (tonal->count > 5)
{
for (i=0;i<9;i++)
tonal->std[i] = (1-alpha)*tonal->std[i] + alpha*features[i]*features[i];
}
for (i=0;i<8;i++)
{
tonal->mem[i+24] = tonal->mem[i+16];
tonal->mem[i+16] = tonal->mem[i+8];
tonal->mem[i+8] = tonal->mem[i];
tonal->mem[i] = BFCC[i];
}
for (i=0;i<9;i++)
features[11+i] = (float)sqrt(tonal->std[i]);
features[20] = info->tonality;
features[21] = info->activity;
features[22] = frame_stationarity;
features[23] = info->tonality_slope;
features[24] = tonal->lowECount;
#ifndef DISABLE_FLOAT_API
mlp_process(&net, features, frame_probs);
frame_probs[0] = .5f*(frame_probs[0]+1);
/* Curve fitting between the MLP probability and the actual probability */
frame_probs[0] = .01f + 1.21f*frame_probs[0]*frame_probs[0] - .23f*(float)pow(frame_probs[0], 10);
/* Probability of active audio (as opposed to silence) */
frame_probs[1] = .5f*frame_probs[1]+.5f;
/* Consider that silence has a 50-50 probability. */
frame_probs[0] = frame_probs[1]*frame_probs[0] + (1-frame_probs[1])*.5f;
/*printf("%f %f ", frame_probs[0], frame_probs[1]);*/
{
/* Probability of state transition */
float tau;
/* Represents independence of the MLP probabilities, where
beta=1 means fully independent. */
float beta;
/* Denormalized probability of speech (p0) and music (p1) after update */
float p0, p1;
/* Probabilities for "all speech" and "all music" */
float s0, m0;
/* Probability sum for renormalisation */
float psum;
/* Instantaneous probability of speech and music, with beta pre-applied. */
float speech0;
float music0;
/* One transition every 3 minutes of active audio */
tau = .00005f*frame_probs[1];
beta = .05f;
if (1) {
/* Adapt beta based on how "unexpected" the new prob is */
float p, q;
p = MAX16(.05f,MIN16(.95f,frame_probs[0]));
q = MAX16(.05f,MIN16(.95f,tonal->music_prob));
beta = .01f+.05f*ABS16(p-q)/(p*(1-q)+q*(1-p));
}
/* p0 and p1 are the probabilities of speech and music at this frame
using only information from previous frame and applying the
state transition model */
p0 = (1-tonal->music_prob)*(1-tau) + tonal->music_prob *tau;
p1 = tonal->music_prob *(1-tau) + (1-tonal->music_prob)*tau;
/* We apply the current probability with exponent beta to work around
the fact that the probability estimates aren't independent. */
p0 *= (float)pow(1-frame_probs[0], beta);
p1 *= (float)pow(frame_probs[0], beta);
/* Normalise the probabilities to get the Marokv probability of music. */
tonal->music_prob = p1/(p0+p1);
info->music_prob = tonal->music_prob;
/* This chunk of code deals with delayed decision. */
psum=1e-20f;
/* Instantaneous probability of speech and music, with beta pre-applied. */
speech0 = (float)pow(1-frame_probs[0], beta);
music0 = (float)pow(frame_probs[0], beta);
if (tonal->count==1)
{
tonal->pspeech[0]=.5;
tonal->pmusic [0]=.5;
}
/* Updated probability of having only speech (s0) or only music (m0),
before considering the new observation. */
s0 = tonal->pspeech[0] + tonal->pspeech[1];
m0 = tonal->pmusic [0] + tonal->pmusic [1];
/* Updates s0 and m0 with instantaneous probability. */
tonal->pspeech[0] = s0*(1-tau)*speech0;
tonal->pmusic [0] = m0*(1-tau)*music0;
/* Propagate the transition probabilities */
for (i=1;i<DETECT_SIZE-1;i++)
{
tonal->pspeech[i] = tonal->pspeech[i+1]*speech0;
tonal->pmusic [i] = tonal->pmusic [i+1]*music0;
}
/* Probability that the latest frame is speech, when all the previous ones were music. */
tonal->pspeech[DETECT_SIZE-1] = m0*tau*speech0;
/* Probability that the latest frame is music, when all the previous ones were speech. */
tonal->pmusic [DETECT_SIZE-1] = s0*tau*music0;
/* Renormalise probabilities to 1 */
for (i=0;i<DETECT_SIZE;i++)
psum += tonal->pspeech[i] + tonal->pmusic[i];
psum = 1.f/psum;
for (i=0;i<DETECT_SIZE;i++)
{
tonal->pspeech[i] *= psum;
tonal->pmusic [i] *= psum;
}
psum = tonal->pmusic[0];
for (i=1;i<DETECT_SIZE;i++)
psum += tonal->pspeech[i];
/* Estimate our confidence in the speech/music decisions */
if (frame_probs[1]>.75)
{
if (tonal->music_prob>.9)
{
float adapt;
adapt = 1.f/(++tonal->music_confidence_count);
tonal->music_confidence_count = IMIN(tonal->music_confidence_count, 500);
tonal->music_confidence += adapt*MAX16(-.2f,frame_probs[0]-tonal->music_confidence);
}
if (tonal->music_prob<.1)
{
float adapt;
adapt = 1.f/(++tonal->speech_confidence_count);
tonal->speech_confidence_count = IMIN(tonal->speech_confidence_count, 500);
tonal->speech_confidence += adapt*MIN16(.2f,frame_probs[0]-tonal->speech_confidence);
}
} else {
if (tonal->music_confidence_count==0)
tonal->music_confidence = .9f;
if (tonal->speech_confidence_count==0)
tonal->speech_confidence = .1f;
}
}
if (tonal->last_music != (tonal->music_prob>.5f))
tonal->last_transition=0;
tonal->last_music = tonal->music_prob>.5f;
#else
info->music_prob = 0;
#endif
/*for (i=0;i<25;i++)
printf("%f ", features[i]);
printf("\n");*/
info->bandwidth = bandwidth;
/*printf("%d %d\n", info->bandwidth, info->opus_bandwidth);*/
info->noisiness = frame_noisiness;
info->valid = 1;
if (info_out!=NULL)
OPUS_COPY(info_out, info, 1);
RESTORE_STACK;
}
void run_analysis(TonalityAnalysisState *analysis, const CELTMode *celt_mode, const void *analysis_pcm,
int analysis_frame_size, int frame_size, int c1, int c2, int C, opus_int32 Fs,
int lsb_depth, downmix_func downmix, AnalysisInfo *analysis_info)
{
int offset;
int pcm_len;
if (analysis_pcm != NULL)
{
/* Avoid overflow/wrap-around of the analysis buffer */
analysis_frame_size = IMIN((DETECT_SIZE-5)*Fs/100, analysis_frame_size);
pcm_len = analysis_frame_size - analysis->analysis_offset;
offset = analysis->analysis_offset;
do {
tonality_analysis(analysis, NULL, celt_mode, analysis_pcm, IMIN(480, pcm_len), offset, c1, c2, C, lsb_depth, downmix);
offset += 480;
pcm_len -= 480;
} while (pcm_len>0);
analysis->analysis_offset = analysis_frame_size;
analysis->analysis_offset -= frame_size;
}
analysis_info->valid = 0;
tonality_get_info(analysis, analysis_info, frame_size);
}

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/* Copyright (c) 2011 Xiph.Org Foundation
Written by Jean-Marc Valin */
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef ANALYSIS_H
#define ANALYSIS_H
#include "celt.h"
#include "opus_private.h"
#define NB_FRAMES 8
#define NB_TBANDS 18
#define NB_TOT_BANDS 21
#define ANALYSIS_BUF_SIZE 720 /* 15 ms at 48 kHz */
#define DETECT_SIZE 200
typedef struct {
float angle[240];
float d_angle[240];
float d2_angle[240];
opus_val32 inmem[ANALYSIS_BUF_SIZE];
int mem_fill; /* number of usable samples in the buffer */
float prev_band_tonality[NB_TBANDS];
float prev_tonality;
float E[NB_FRAMES][NB_TBANDS];
float lowE[NB_TBANDS];
float highE[NB_TBANDS];
float meanE[NB_TOT_BANDS];
float mem[32];
float cmean[8];
float std[9];
float music_prob;
float Etracker;
float lowECount;
int E_count;
int last_music;
int last_transition;
int count;
float subframe_mem[3];
int analysis_offset;
/** Probability of having speech for time i to DETECT_SIZE-1 (and music before).
pspeech[0] is the probability that all frames in the window are speech. */
float pspeech[DETECT_SIZE];
/** Probability of having music for time i to DETECT_SIZE-1 (and speech before).
pmusic[0] is the probability that all frames in the window are music. */
float pmusic[DETECT_SIZE];
float speech_confidence;
float music_confidence;
int speech_confidence_count;
int music_confidence_count;
int write_pos;
int read_pos;
int read_subframe;
AnalysisInfo info[DETECT_SIZE];
} TonalityAnalysisState;
void tonality_analysis(TonalityAnalysisState *tonal, AnalysisInfo *info,
const CELTMode *celt_mode, const void *x, int len, int offset, int c1, int c2, int C, int lsb_depth, downmix_func downmix);
void tonality_get_info(TonalityAnalysisState *tonal, AnalysisInfo *info_out, int len);
void run_analysis(TonalityAnalysisState *analysis, const CELTMode *celt_mode, const void *analysis_pcm,
int analysis_frame_size, int frame_size, int c1, int c2, int C, opus_int32 Fs,
int lsb_depth, downmix_func downmix, AnalysisInfo *analysis_info);
#endif

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/*Copyright (c) 2003-2004, Mark Borgerding
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.*/
#ifndef KISS_FFT_GUTS_H
#define KISS_FFT_GUTS_H
#define MIN(a,b) ((a)<(b) ? (a):(b))
#define MAX(a,b) ((a)>(b) ? (a):(b))
/* kiss_fft.h
defines kiss_fft_scalar as either short or a float type
and defines
typedef struct { kiss_fft_scalar r; kiss_fft_scalar i; }kiss_fft_cpx; */
#include "kiss_fft.h"
/*
Explanation of macros dealing with complex math:
C_MUL(m,a,b) : m = a*b
C_FIXDIV( c , div ) : if a fixed point impl., c /= div. noop otherwise
C_SUB( res, a,b) : res = a - b
C_SUBFROM( res , a) : res -= a
C_ADDTO( res , a) : res += a
* */
#ifdef FIXED_POINT
#include "arch.h"
#define SAMP_MAX 2147483647
#define TWID_MAX 32767
#define TRIG_UPSCALE 1
#define SAMP_MIN -SAMP_MAX
# define S_MUL(a,b) MULT16_32_Q15(b, a)
# define C_MUL(m,a,b) \
do{ (m).r = SUB32(S_MUL((a).r,(b).r) , S_MUL((a).i,(b).i)); \
(m).i = ADD32(S_MUL((a).r,(b).i) , S_MUL((a).i,(b).r)); }while(0)
# define C_MULC(m,a,b) \
do{ (m).r = ADD32(S_MUL((a).r,(b).r) , S_MUL((a).i,(b).i)); \
(m).i = SUB32(S_MUL((a).i,(b).r) , S_MUL((a).r,(b).i)); }while(0)
# define C_MUL4(m,a,b) \
do{ (m).r = SHR32(SUB32(S_MUL((a).r,(b).r) , S_MUL((a).i,(b).i)),2); \
(m).i = SHR32(ADD32(S_MUL((a).r,(b).i) , S_MUL((a).i,(b).r)),2); }while(0)
# define C_MULBYSCALAR( c, s ) \
do{ (c).r = S_MUL( (c).r , s ) ;\
(c).i = S_MUL( (c).i , s ) ; }while(0)
# define DIVSCALAR(x,k) \
(x) = S_MUL( x, (TWID_MAX-((k)>>1))/(k)+1 )
# define C_FIXDIV(c,div) \
do { DIVSCALAR( (c).r , div); \
DIVSCALAR( (c).i , div); }while (0)
#define C_ADD( res, a,b)\
do {(res).r=ADD32((a).r,(b).r); (res).i=ADD32((a).i,(b).i); \
}while(0)
#define C_SUB( res, a,b)\
do {(res).r=SUB32((a).r,(b).r); (res).i=SUB32((a).i,(b).i); \
}while(0)
#define C_ADDTO( res , a)\
do {(res).r = ADD32((res).r, (a).r); (res).i = ADD32((res).i,(a).i);\
}while(0)
#define C_SUBFROM( res , a)\
do {(res).r = ADD32((res).r,(a).r); (res).i = SUB32((res).i,(a).i); \
}while(0)
#if defined(OPUS_ARM_INLINE_ASM)
#include "arm/kiss_fft_armv4.h"
#endif
#if defined(OPUS_ARM_INLINE_EDSP)
#include "arm/kiss_fft_armv5e.h"
#endif
#else /* not FIXED_POINT*/
# define S_MUL(a,b) ( (a)*(b) )
#define C_MUL(m,a,b) \
do{ (m).r = (a).r*(b).r - (a).i*(b).i;\
(m).i = (a).r*(b).i + (a).i*(b).r; }while(0)
#define C_MULC(m,a,b) \
do{ (m).r = (a).r*(b).r + (a).i*(b).i;\
(m).i = (a).i*(b).r - (a).r*(b).i; }while(0)
#define C_MUL4(m,a,b) C_MUL(m,a,b)
# define C_FIXDIV(c,div) /* NOOP */
# define C_MULBYSCALAR( c, s ) \
do{ (c).r *= (s);\
(c).i *= (s); }while(0)
#endif
#ifndef CHECK_OVERFLOW_OP
# define CHECK_OVERFLOW_OP(a,op,b) /* noop */
#endif
#ifndef C_ADD
#define C_ADD( res, a,b)\
do { \
CHECK_OVERFLOW_OP((a).r,+,(b).r)\
CHECK_OVERFLOW_OP((a).i,+,(b).i)\
(res).r=(a).r+(b).r; (res).i=(a).i+(b).i; \
}while(0)
#define C_SUB( res, a,b)\
do { \
CHECK_OVERFLOW_OP((a).r,-,(b).r)\
CHECK_OVERFLOW_OP((a).i,-,(b).i)\
(res).r=(a).r-(b).r; (res).i=(a).i-(b).i; \
}while(0)
#define C_ADDTO( res , a)\
do { \
CHECK_OVERFLOW_OP((res).r,+,(a).r)\
CHECK_OVERFLOW_OP((res).i,+,(a).i)\
(res).r += (a).r; (res).i += (a).i;\
}while(0)
#define C_SUBFROM( res , a)\
do {\
CHECK_OVERFLOW_OP((res).r,-,(a).r)\
CHECK_OVERFLOW_OP((res).i,-,(a).i)\
(res).r -= (a).r; (res).i -= (a).i; \
}while(0)
#endif /* C_ADD defined */
#ifdef FIXED_POINT
/*# define KISS_FFT_COS(phase) TRIG_UPSCALE*floor(MIN(32767,MAX(-32767,.5+32768 * cos (phase))))
# define KISS_FFT_SIN(phase) TRIG_UPSCALE*floor(MIN(32767,MAX(-32767,.5+32768 * sin (phase))))*/
# define KISS_FFT_COS(phase) floor(.5+TWID_MAX*cos (phase))
# define KISS_FFT_SIN(phase) floor(.5+TWID_MAX*sin (phase))
# define HALF_OF(x) ((x)>>1)
#elif defined(USE_SIMD)
# define KISS_FFT_COS(phase) _mm_set1_ps( cos(phase) )
# define KISS_FFT_SIN(phase) _mm_set1_ps( sin(phase) )
# define HALF_OF(x) ((x)*_mm_set1_ps(.5f))
#else
# define KISS_FFT_COS(phase) (kiss_fft_scalar) cos(phase)
# define KISS_FFT_SIN(phase) (kiss_fft_scalar) sin(phase)
# define HALF_OF(x) ((x)*.5f)
#endif
#define kf_cexp(x,phase) \
do{ \
(x)->r = KISS_FFT_COS(phase);\
(x)->i = KISS_FFT_SIN(phase);\
}while(0)
#define kf_cexp2(x,phase) \
do{ \
(x)->r = TRIG_UPSCALE*celt_cos_norm((phase));\
(x)->i = TRIG_UPSCALE*celt_cos_norm((phase)-32768);\
}while(0)
#endif /* KISS_FFT_GUTS_H */

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/* Copyright (c) 2003-2008 Jean-Marc Valin
Copyright (c) 2007-2008 CSIRO
Copyright (c) 2007-2009 Xiph.Org Foundation
Written by Jean-Marc Valin */
/**
@file arch.h
@brief Various architecture definitions for CELT
*/
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef ARCH_H
#define ARCH_H
#include "opus_types.h"
#include "opus_defines.h"
# if !defined(__GNUC_PREREQ)
# if defined(__GNUC__)&&defined(__GNUC_MINOR__)
# define __GNUC_PREREQ(_maj,_min) \
((__GNUC__<<16)+__GNUC_MINOR__>=((_maj)<<16)+(_min))
# else
# define __GNUC_PREREQ(_maj,_min) 0
# endif
# endif
#define CELT_SIG_SCALE 32768.f
#define celt_fatal(str) _celt_fatal(str, __FILE__, __LINE__);
#ifdef ENABLE_ASSERTIONS
#include <stdio.h>
#include <stdlib.h>
#ifdef __GNUC__
__attribute__((noreturn))
#endif
static OPUS_INLINE void _celt_fatal(const char *str, const char *file, int line)
{
fprintf (stderr, "Fatal (internal) error in %s, line %d: %s\n", file, line, str);
abort();
}
#define celt_assert(cond) {if (!(cond)) {celt_fatal("assertion failed: " #cond);}}
#define celt_assert2(cond, message) {if (!(cond)) {celt_fatal("assertion failed: " #cond "\n" message);}}
#else
#define celt_assert(cond)
#define celt_assert2(cond, message)
#endif
#define IMUL32(a,b) ((a)*(b))
#define ABS(x) ((x) < 0 ? (-(x)) : (x)) /**< Absolute integer value. */
#define ABS16(x) ((x) < 0 ? (-(x)) : (x)) /**< Absolute 16-bit value. */
#define MIN16(a,b) ((a) < (b) ? (a) : (b)) /**< Minimum 16-bit value. */
#define MAX16(a,b) ((a) > (b) ? (a) : (b)) /**< Maximum 16-bit value. */
#define ABS32(x) ((x) < 0 ? (-(x)) : (x)) /**< Absolute 32-bit value. */
#define MIN32(a,b) ((a) < (b) ? (a) : (b)) /**< Minimum 32-bit value. */
#define MAX32(a,b) ((a) > (b) ? (a) : (b)) /**< Maximum 32-bit value. */
#define IMIN(a,b) ((a) < (b) ? (a) : (b)) /**< Minimum int value. */
#define IMAX(a,b) ((a) > (b) ? (a) : (b)) /**< Maximum int value. */
#define UADD32(a,b) ((a)+(b))
#define USUB32(a,b) ((a)-(b))
#define PRINT_MIPS(file)
#ifdef FIXED_POINT
typedef opus_int16 opus_val16;
typedef opus_int32 opus_val32;
typedef opus_val32 celt_sig;
typedef opus_val16 celt_norm;
typedef opus_val32 celt_ener;
#define Q15ONE 32767
#define SIG_SHIFT 12
#define NORM_SCALING 16384
#define DB_SHIFT 10
#define EPSILON 1
#define VERY_SMALL 0
#define VERY_LARGE16 ((opus_val16)32767)
#define Q15_ONE ((opus_val16)32767)
#define SCALEIN(a) (a)
#define SCALEOUT(a) (a)
#ifdef FIXED_DEBUG
#include "fixed_debug.h"
#else
#include "fixed_generic.h"
#ifdef OPUS_ARM_INLINE_EDSP
#include "arm/fixed_armv5e.h"
#elif defined (OPUS_ARM_INLINE_ASM)
#include "arm/fixed_armv4.h"
#elif defined (BFIN_ASM)
#include "fixed_bfin.h"
#elif defined (TI_C5X_ASM)
#include "fixed_c5x.h"
#elif defined (TI_C6X_ASM)
#include "fixed_c6x.h"
#endif
#endif
#else /* FIXED_POINT */
typedef float opus_val16;
typedef float opus_val32;
typedef float celt_sig;
typedef float celt_norm;
typedef float celt_ener;
#define Q15ONE 1.0f
#define NORM_SCALING 1.f
#define EPSILON 1e-15f
#define VERY_SMALL 1e-30f
#define VERY_LARGE16 1e15f
#define Q15_ONE ((opus_val16)1.f)
#define QCONST16(x,bits) (x)
#define QCONST32(x,bits) (x)
#define NEG16(x) (-(x))
#define NEG32(x) (-(x))
#define EXTRACT16(x) (x)
#define EXTEND32(x) (x)
#define SHR16(a,shift) (a)
#define SHL16(a,shift) (a)
#define SHR32(a,shift) (a)
#define SHL32(a,shift) (a)
#define PSHR32(a,shift) (a)
#define VSHR32(a,shift) (a)
#define PSHR(a,shift) (a)
#define SHR(a,shift) (a)
#define SHL(a,shift) (a)
#define SATURATE(x,a) (x)
#define SATURATE16(x) (x)
#define ROUND16(a,shift) (a)
#define HALF16(x) (.5f*(x))
#define HALF32(x) (.5f*(x))
#define ADD16(a,b) ((a)+(b))
#define SUB16(a,b) ((a)-(b))
#define ADD32(a,b) ((a)+(b))
#define SUB32(a,b) ((a)-(b))
#define MULT16_16_16(a,b) ((a)*(b))
#define MULT16_16(a,b) ((opus_val32)(a)*(opus_val32)(b))
#define MAC16_16(c,a,b) ((c)+(opus_val32)(a)*(opus_val32)(b))
#define MULT16_32_Q15(a,b) ((a)*(b))
#define MULT16_32_Q16(a,b) ((a)*(b))
#define MULT32_32_Q31(a,b) ((a)*(b))
#define MAC16_32_Q15(c,a,b) ((c)+(a)*(b))
#define MULT16_16_Q11_32(a,b) ((a)*(b))
#define MULT16_16_Q11(a,b) ((a)*(b))
#define MULT16_16_Q13(a,b) ((a)*(b))
#define MULT16_16_Q14(a,b) ((a)*(b))
#define MULT16_16_Q15(a,b) ((a)*(b))
#define MULT16_16_P15(a,b) ((a)*(b))
#define MULT16_16_P13(a,b) ((a)*(b))
#define MULT16_16_P14(a,b) ((a)*(b))
#define MULT16_32_P16(a,b) ((a)*(b))
#define DIV32_16(a,b) (((opus_val32)(a))/(opus_val16)(b))
#define DIV32(a,b) (((opus_val32)(a))/(opus_val32)(b))
#define SCALEIN(a) ((a)*CELT_SIG_SCALE)
#define SCALEOUT(a) ((a)*(1/CELT_SIG_SCALE))
#endif /* !FIXED_POINT */
#ifndef GLOBAL_STACK_SIZE
#ifdef FIXED_POINT
#define GLOBAL_STACK_SIZE 100000
#else
#define GLOBAL_STACK_SIZE 100000
#endif
#endif
#endif /* ARCH_H */

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src/engine/external/opus/celt/arm/.deps/arm_celt_map.Plo vendored Normal file
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# dummy

1
src/engine/external/opus/celt/arm/.deps/armcpu.Plo vendored Normal file
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@ -0,0 +1 @@
# dummy

1
src/engine/external/opus/celt/arm/.deps/celt_pitch_xcorr_arm-gnu.Plo vendored Normal file
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@ -0,0 +1 @@
# dummy

316
src/engine/external/opus/celt/arm/arm2gnu.pl vendored Executable file
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@ -0,0 +1,316 @@
#!/usr/bin/perl
my $bigend; # little/big endian
my $nxstack;
$nxstack = 0;
eval 'exec /usr/local/bin/perl -S $0 ${1+"$@"}'
if $running_under_some_shell;
while ($ARGV[0] =~ /^-/) {
$_ = shift;
last if /^--/;
if (/^-n/) {
$nflag++;
next;
}
die "I don't recognize this switch: $_\\n";
}
$printit++ unless $nflag;
$\ = "\n"; # automatically add newline on print
$n=0;
$thumb = 0; # ARM mode by default, not Thumb.
@proc_stack = ();
LINE:
while (<>) {
# For ADRLs we need to add a new line after the substituted one.
$addPadding = 0;
# First, we do not dare to touch *anything* inside double quotes, do we?
# Second, if you want a dollar character in the string,
# insert two of them -- that's how ARM C and assembler treat strings.
s/^([A-Za-z_]\w*)[ \t]+DCB[ \t]*\"/$1: .ascii \"/ && do { s/\$\$/\$/g; next };
s/\bDCB\b[ \t]*\"/.ascii \"/ && do { s/\$\$/\$/g; next };
s/^(\S+)\s+RN\s+(\S+)/$1 .req r$2/ && do { s/\$\$/\$/g; next };
# If there's nothing on a line but a comment, don't try to apply any further
# substitutions (this is a cheap hack to avoid mucking up the license header)
s/^([ \t]*);/$1@/ && do { s/\$\$/\$/g; next };
# If substituted -- leave immediately !
s/@/,:/;
s/;/@/;
while ( /@.*'/ ) {
s/(@.*)'/$1/g;
}
s/\{FALSE\}/0/g;
s/\{TRUE\}/1/g;
s/\{(\w\w\w\w+)\}/$1/g;
s/\bINCLUDE[ \t]*([^ \t\n]+)/.include \"$1\"/;
s/\bGET[ \t]*([^ \t\n]+)/.include \"${ my $x=$1; $x =~ s|\.s|-gnu.S|; \$x }\"/;
s/\bIMPORT\b/.extern/;
s/\bEXPORT\b/.global/;
s/^(\s+)\[/$1IF/;
s/^(\s+)\|/$1ELSE/;
s/^(\s+)\]/$1ENDIF/;
s/IF *:DEF:/ .ifdef/;
s/IF *:LNOT: *:DEF:/ .ifndef/;
s/ELSE/ .else/;
s/ENDIF/ .endif/;
if( /\bIF\b/ ) {
s/\bIF\b/ .if/;
s/=/==/;
}
if ( $n == 2) {
s/\$/\\/g;
}
if ($n == 1) {
s/\$//g;
s/label//g;
$n = 2;
}
if ( /MACRO/ ) {
s/MACRO *\n/.macro/;
$n=1;
}
if ( /\bMEND\b/ ) {
s/\bMEND\b/.endm/;
$n=0;
}
# ".rdata" doesn't work in 'as' version 2.13.2, as it is ".rodata" there.
#
if ( /\bAREA\b/ ) {
my $align;
$align = "2";
if ( /ALIGN=(\d+)/ ) {
$align = $1;
}
if ( /CODE/ ) {
$nxstack = 1;
}
s/^(.+)CODE(.+)READONLY(.*)/ .text/;
s/^(.+)DATA(.+)READONLY(.*)/ .section .rdata/;
s/^(.+)\|\|\.data\|\|(.+)/ .data/;
s/^(.+)\|\|\.bss\|\|(.+)/ .bss/;
s/$/; .p2align $align/;
# Enable NEON instructions but don't produce a binary that requires
# ARMv7. RVCT does not have equivalent directives, so we just do this
# for all CODE areas.
if ( /.text/ ) {
# Separating .arch, .fpu, etc., by semicolons does not work (gas
# thinks the semicolon is part of the arch name, even when there's
# whitespace separating them). Sadly this means our line numbers
# won't match the original source file (we could use the .line
# directive, which is documented to be obsolete, but then gdb will
# show the wrong line in the translated source file).
s/$/; .arch armv7-a\n .fpu neon\n .object_arch armv4t/;
}
}
s/\|\|\.constdata\$(\d+)\|\|/.L_CONST$1/; # ||.constdata$3||
s/\|\|\.bss\$(\d+)\|\|/.L_BSS$1/; # ||.bss$2||
s/\|\|\.data\$(\d+)\|\|/.L_DATA$1/; # ||.data$2||
s/\|\|([a-zA-Z0-9_]+)\@([a-zA-Z0-9_]+)\|\|/@ $&/;
s/^(\s+)\%(\s)/ .space $1/;
s/\|(.+)\.(\d+)\|/\.$1_$2/; # |L80.123| -> .L80_123
s/\bCODE32\b/.code 32/ && do {$thumb = 0};
s/\bCODE16\b/.code 16/ && do {$thumb = 1};
if (/\bPROC\b/)
{
my $prefix;
my $proc;
/^([A-Za-z_\.]\w+)\b/;
$proc = $1;
$prefix = "";
if ($proc)
{
$prefix = $prefix.sprintf("\t.type\t%s, %%function; ",$proc);
push(@proc_stack, $proc);
s/^[A-Za-z_\.]\w+/$&:/;
}
$prefix = $prefix."\t.thumb_func; " if ($thumb);
s/\bPROC\b/@ $&/;
$_ = $prefix.$_;
}
s/^(\s*)(S|Q|SH|U|UQ|UH)ASX\b/$1$2ADDSUBX/;
s/^(\s*)(S|Q|SH|U|UQ|UH)SAX\b/$1$2SUBADDX/;
if (/\bENDP\b/)
{
my $proc;
s/\bENDP\b/@ $&/;
$proc = pop(@proc_stack);
$_ = "\t.size $proc, .-$proc".$_ if ($proc);
}
s/\bSUBT\b/@ $&/;
s/\bDATA\b/@ $&/; # DATA directive is deprecated -- Asm guide, p.7-25
s/\bKEEP\b/@ $&/;
s/\bEXPORTAS\b/@ $&/;
s/\|\|(.)+\bEQU\b/@ $&/;
s/\|\|([\w\$]+)\|\|/$1/;
s/\bENTRY\b/@ $&/;
s/\bASSERT\b/@ $&/;
s/\bGBLL\b/@ $&/;
s/\bGBLA\b/@ $&/;
s/^\W+OPT\b/@ $&/;
s/:OR:/|/g;
s/:SHL:/<</g;
s/:SHR:/>>/g;
s/:AND:/&/g;
s/:LAND:/&&/g;
s/CPSR/cpsr/;
s/SPSR/spsr/;
s/ALIGN$/.balign 4/;
s/ALIGN\s+([0-9x]+)$/.balign $1/;
s/psr_cxsf/psr_all/;
s/LTORG/.ltorg/;
s/^([A-Za-z_]\w*)[ \t]+EQU/ .set $1,/;
s/^([A-Za-z_]\w*)[ \t]+SETL/ .set $1,/;
s/^([A-Za-z_]\w*)[ \t]+SETA/ .set $1,/;
s/^([A-Za-z_]\w*)[ \t]+\*/ .set $1,/;
# {PC} + 0xdeadfeed --> . + 0xdeadfeed
s/\{PC\} \+/ \. +/;
# Single hex constant on the line !
#
# >>> NOTE <<<
# Double-precision floats in gcc are always mixed-endian, which means
# bytes in two words are little-endian, but words are big-endian.
# So, 0x0000deadfeed0000 would be stored as 0x0000dead at low address
# and 0xfeed0000 at high address.
#
s/\bDCFD\b[ \t]+0x([a-fA-F0-9]{8})([a-fA-F0-9]{8})/.long 0x$1, 0x$2/;
# Only decimal constants on the line, no hex !
s/\bDCFD\b[ \t]+([0-9\.\-]+)/.double $1/;
# Single hex constant on the line !
# s/\bDCFS\b[ \t]+0x([a-f0-9]{8})([a-f0-9]{8})/.long 0x$1, 0x$2/;
# Only decimal constants on the line, no hex !
# s/\bDCFS\b[ \t]+([0-9\.\-]+)/.double $1/;
s/\bDCFS[ \t]+0x/.word 0x/;
s/\bDCFS\b/.float/;
s/^([A-Za-z_]\w*)[ \t]+DCD/$1 .word/;
s/\bDCD\b/.word/;
s/^([A-Za-z_]\w*)[ \t]+DCW/$1 .short/;
s/\bDCW\b/.short/;
s/^([A-Za-z_]\w*)[ \t]+DCB/$1 .byte/;
s/\bDCB\b/.byte/;
s/^([A-Za-z_]\w*)[ \t]+\%/.comm $1,/;
s/^[A-Za-z_\.]\w+/$&:/;
s/^(\d+)/$1:/;
s/\%(\d+)/$1b_or_f/;
s/\%[Bb](\d+)/$1b/;
s/\%[Ff](\d+)/$1f/;
s/\%[Ff][Tt](\d+)/$1f/;
s/&([\dA-Fa-f]+)/0x$1/;
if ( /\b2_[01]+\b/ ) {
s/\b2_([01]+)\b/conv$1&&&&/g;
while ( /[01][01][01][01]&&&&/ ) {
s/0000&&&&/&&&&0/g;
s/0001&&&&/&&&&1/g;
s/0010&&&&/&&&&2/g;
s/0011&&&&/&&&&3/g;
s/0100&&&&/&&&&4/g;
s/0101&&&&/&&&&5/g;
s/0110&&&&/&&&&6/g;
s/0111&&&&/&&&&7/g;
s/1000&&&&/&&&&8/g;
s/1001&&&&/&&&&9/g;
s/1010&&&&/&&&&A/g;
s/1011&&&&/&&&&B/g;
s/1100&&&&/&&&&C/g;
s/1101&&&&/&&&&D/g;
s/1110&&&&/&&&&E/g;
s/1111&&&&/&&&&F/g;
}
s/000&&&&/&&&&0/g;
s/001&&&&/&&&&1/g;
s/010&&&&/&&&&2/g;
s/011&&&&/&&&&3/g;
s/100&&&&/&&&&4/g;
s/101&&&&/&&&&5/g;
s/110&&&&/&&&&6/g;
s/111&&&&/&&&&7/g;
s/00&&&&/&&&&0/g;
s/01&&&&/&&&&1/g;
s/10&&&&/&&&&2/g;
s/11&&&&/&&&&3/g;
s/0&&&&/&&&&0/g;
s/1&&&&/&&&&1/g;
s/conv&&&&/0x/g;
}
if ( /commandline/)
{
if( /-bigend/)
{
$bigend=1;
}
}
if ( /\bDCDU\b/ )
{
my $cmd=$_;
my $value;
my $prefix;
my $w1;
my $w2;
my $w3;
my $w4;
s/\s+DCDU\b/@ $&/;
$cmd =~ /\bDCDU\b\s+0x(\d+)/;
$value = $1;
$value =~ /(\w\w)(\w\w)(\w\w)(\w\w)/;
$w1 = $1;
$w2 = $2;
$w3 = $3;
$w4 = $4;
if( $bigend ne "")
{
# big endian
$prefix = "\t.byte\t0x".$w1.";".
"\t.byte\t0x".$w2.";".
"\t.byte\t0x".$w3.";".
"\t.byte\t0x".$w4."; ";
}
else
{
# little endian
$prefix = "\t.byte\t0x".$w4.";".
"\t.byte\t0x".$w3.";".
"\t.byte\t0x".$w2.";".
"\t.byte\t0x".$w1."; ";
}
$_=$prefix.$_;
}
if ( /\badrl\b/i )
{
s/\badrl\s+(\w+)\s*,\s*(\w+)/ldr $1,=$2/i;
$addPadding = 1;
}
s/\bEND\b/@ END/;
} continue {
printf ("%s", $_) if $printit;
if ($addPadding != 0)
{
printf (" mov r0,r0\n");
$addPadding = 0;
}
}
#If we had a code section, mark that this object doesn't need an executable
# stack.
if ($nxstack) {
printf (" .section\t.note.GNU-stack,\"\",\%\%progbits\n");
}

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src/engine/external/opus/celt/arm/arm_celt_map.c vendored Normal file
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@ -0,0 +1,49 @@
/* Copyright (c) 2010 Xiph.Org Foundation
* Copyright (c) 2013 Parrot */
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "pitch.h"
#if defined(OPUS_HAVE_RTCD)
# if defined(FIXED_POINT)
opus_val32 (*const CELT_PITCH_XCORR_IMPL[OPUS_ARCHMASK+1])(const opus_val16 *,
const opus_val16 *, opus_val32 *, int , int) = {
celt_pitch_xcorr_c, /* ARMv4 */
MAY_HAVE_EDSP(celt_pitch_xcorr), /* EDSP */
MAY_HAVE_MEDIA(celt_pitch_xcorr), /* Media */
MAY_HAVE_NEON(celt_pitch_xcorr) /* NEON */
};
# else
# error "Floating-point implementation is not supported by ARM asm yet." \
"Reconfigure with --disable-rtcd or send patches."
# endif
#endif

174
src/engine/external/opus/celt/arm/armcpu.c vendored Normal file
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/* Copyright (c) 2010 Xiph.Org Foundation
* Copyright (c) 2013 Parrot */
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/* Original code from libtheora modified to suit to Opus */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#ifdef OPUS_HAVE_RTCD
#include "armcpu.h"
#include "cpu_support.h"
#include "os_support.h"
#include "opus_types.h"
#define OPUS_CPU_ARM_V4 (1)
#define OPUS_CPU_ARM_EDSP (1<<1)
#define OPUS_CPU_ARM_MEDIA (1<<2)
#define OPUS_CPU_ARM_NEON (1<<3)
#if defined(_MSC_VER)
/*For GetExceptionCode() and EXCEPTION_ILLEGAL_INSTRUCTION.*/
# define WIN32_LEAN_AND_MEAN
# define WIN32_EXTRA_LEAN
# include <windows.h>
static OPUS_INLINE opus_uint32 opus_cpu_capabilities(void){
opus_uint32 flags;
flags=0;
/* MSVC has no OPUS_INLINE __asm support for ARM, but it does let you __emit
* instructions via their assembled hex code.
* All of these instructions should be essentially nops. */
# if defined(OPUS_ARM_MAY_HAVE_EDSP)
__try{
/*PLD [r13]*/
__emit(0xF5DDF000);
flags|=OPUS_CPU_ARM_EDSP;
}
__except(GetExceptionCode()==EXCEPTION_ILLEGAL_INSTRUCTION){
/*Ignore exception.*/
}
# if defined(OPUS_ARM_MAY_HAVE_MEDIA)
__try{
/*SHADD8 r3,r3,r3*/
__emit(0xE6333F93);
flags|=OPUS_CPU_ARM_MEDIA;
}
__except(GetExceptionCode()==EXCEPTION_ILLEGAL_INSTRUCTION){
/*Ignore exception.*/
}
# if defined(OPUS_ARM_MAY_HAVE_NEON)
__try{
/*VORR q0,q0,q0*/
__emit(0xF2200150);
flags|=OPUS_CPU_ARM_NEON;
}
__except(GetExceptionCode()==EXCEPTION_ILLEGAL_INSTRUCTION){
/*Ignore exception.*/
}
# endif
# endif
# endif
return flags;
}
#elif defined(__linux__)
/* Linux based */
opus_uint32 opus_cpu_capabilities(void)
{
opus_uint32 flags = 0;
FILE *cpuinfo;
/* Reading /proc/self/auxv would be easier, but that doesn't work reliably on
* Android */
cpuinfo = fopen("/proc/cpuinfo", "r");
if(cpuinfo != NULL)
{
/* 512 should be enough for anybody (it's even enough for all the flags that
* x86 has accumulated... so far). */
char buf[512];
while(fgets(buf, 512, cpuinfo) != NULL)
{
# if defined(OPUS_ARM_MAY_HAVE_EDSP) || defined(OPUS_ARM_MAY_HAVE_NEON)
/* Search for edsp and neon flag */
if(memcmp(buf, "Features", 8) == 0)
{
char *p;
# if defined(OPUS_ARM_MAY_HAVE_EDSP)
p = strstr(buf, " edsp");
if(p != NULL && (p[5] == ' ' || p[5] == '\n'))
flags |= OPUS_CPU_ARM_EDSP;
# endif
# if defined(OPUS_ARM_MAY_HAVE_NEON)
p = strstr(buf, " neon");
if(p != NULL && (p[5] == ' ' || p[5] == '\n'))
flags |= OPUS_CPU_ARM_NEON;
# endif
}
# endif
# if defined(OPUS_ARM_MAY_HAVE_MEDIA)
/* Search for media capabilities (>= ARMv6) */
if(memcmp(buf, "CPU architecture:", 17) == 0)
{
int version;
version = atoi(buf+17);
if(version >= 6)
flags |= OPUS_CPU_ARM_MEDIA;
}
# endif
}
fclose(cpuinfo);
}
return flags;
}
#else
/* The feature registers which can tell us what the processor supports are
* accessible in priveleged modes only, so we can't have a general user-space
* detection method like on x86.*/
# error "Configured to use ARM asm but no CPU detection method available for " \
"your platform. Reconfigure with --disable-rtcd (or send patches)."
#endif
int opus_select_arch(void)
{
opus_uint32 flags = opus_cpu_capabilities();
int arch = 0;
if(!(flags & OPUS_CPU_ARM_EDSP))
return arch;
arch++;
if(!(flags & OPUS_CPU_ARM_MEDIA))
return arch;
arch++;
if(!(flags & OPUS_CPU_ARM_NEON))
return arch;
arch++;
return arch;
}
#endif

71
src/engine/external/opus/celt/arm/armcpu.h vendored Normal file
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/* Copyright (c) 2010 Xiph.Org Foundation
* Copyright (c) 2013 Parrot */
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#if !defined(ARMCPU_H)
# define ARMCPU_H
# if defined(OPUS_ARM_MAY_HAVE_EDSP)
# define MAY_HAVE_EDSP(name) name ## _edsp
# else
# define MAY_HAVE_EDSP(name) name ## _c
# endif
# if defined(OPUS_ARM_MAY_HAVE_MEDIA)
# define MAY_HAVE_MEDIA(name) name ## _media
# else
# define MAY_HAVE_MEDIA(name) MAY_HAVE_EDSP(name)
# endif
# if defined(OPUS_ARM_MAY_HAVE_NEON)
# define MAY_HAVE_NEON(name) name ## _neon
# else
# define MAY_HAVE_NEON(name) MAY_HAVE_MEDIA(name)
# endif
# if defined(OPUS_ARM_PRESUME_EDSP)
# define PRESUME_EDSP(name) name ## _edsp
# else
# define PRESUME_EDSP(name) name ## _c
# endif
# if defined(OPUS_ARM_PRESUME_MEDIA)
# define PRESUME_MEDIA(name) name ## _media
# else
# define PRESUME_MEDIA(name) PRESUME_EDSP(name)
# endif
# if defined(OPUS_ARM_PRESUME_NEON)
# define PRESUME_NEON(name) name ## _neon
# else
# define PRESUME_NEON(name) PRESUME_MEDIA(name)
# endif
# if defined(OPUS_HAVE_RTCD)
int opus_select_arch(void);
# endif
#endif

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/* Copyright (C) 2013 Mozilla Corporation */
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
; Set the following to 1 if we have EDSP instructions
; (LDRD/STRD, etc., ARMv5E and later).
OPUS_ARM_MAY_HAVE_EDSP *
; Set the following to 1 if we have ARMv6 media instructions.
OPUS_ARM_MAY_HAVE_MEDIA *
; Set the following to 1 if we have NEON (some ARMv7)
OPUS_ARM_MAY_HAVE_NEON *
END

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/* Copyright (C) 2013 Mozilla Corporation */
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
; Set the following to 1 if we have EDSP instructions
; (LDRD/STRD, etc., ARMv5E and later).
OPUS_ARM_MAY_HAVE_EDSP * @OPUS_ARM_MAY_HAVE_EDSP@
; Set the following to 1 if we have ARMv6 media instructions.
OPUS_ARM_MAY_HAVE_MEDIA * @OPUS_ARM_MAY_HAVE_MEDIA@
; Set the following to 1 if we have NEON (some ARMv7)
OPUS_ARM_MAY_HAVE_NEON * @OPUS_ARM_MAY_HAVE_NEON@
END

545
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; Copyright (c) 2007-2008 CSIRO
; Copyright (c) 2007-2009 Xiph.Org Foundation
; Copyright (c) 2013 Parrot
; Written by Aurélien Zanelli
;
; Redistribution and use in source and binary forms, with or without
; modification, are permitted provided that the following conditions
; are met:
;
; - Redistributions of source code must retain the above copyright
; notice, this list of conditions and the following disclaimer.
;
; - Redistributions in binary form must reproduce the above copyright
; notice, this list of conditions and the following disclaimer in the
; documentation and/or other materials provided with the distribution.
;
; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
; ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
; LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
; A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
; OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
; EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
; PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
; PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
; LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
; NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
; SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
AREA |.text|, CODE, READONLY
GET celt/arm/armopts.s
IF OPUS_ARM_MAY_HAVE_EDSP
EXPORT celt_pitch_xcorr_edsp
ENDIF
IF OPUS_ARM_MAY_HAVE_NEON
EXPORT celt_pitch_xcorr_neon
ENDIF
IF OPUS_ARM_MAY_HAVE_NEON
; Compute sum[k]=sum(x[j]*y[j+k],j=0...len-1), k=0...3
xcorr_kernel_neon PROC
; input:
; r3 = int len
; r4 = opus_val16 *x
; r5 = opus_val16 *y
; q0 = opus_val32 sum[4]
; output:
; q0 = opus_val32 sum[4]
; preserved: r0-r3, r6-r11, d2, q4-q7, q9-q15
; internal usage:
; r12 = int j
; d3 = y_3|y_2|y_1|y_0
; q2 = y_B|y_A|y_9|y_8|y_7|y_6|y_5|y_4
; q3 = x_7|x_6|x_5|x_4|x_3|x_2|x_1|x_0
; q8 = scratch
;
; Load y[0...3]
; This requires len>0 to always be valid (which we assert in the C code).
VLD1.16 {d5}, [r5]!
SUBS r12, r3, #8
BLE xcorr_kernel_neon_process4
; Process 8 samples at a time.
; This loop loads one y value more than we actually need. Therefore we have to
; stop as soon as there are 8 or fewer samples left (instead of 7), to avoid
; reading past the end of the array.
xcorr_kernel_neon_process8
; This loop has 19 total instructions (10 cycles to issue, minimum), with
; - 2 cycles of ARM insrtuctions,
; - 10 cycles of load/store/byte permute instructions, and
; - 9 cycles of data processing instructions.
; On a Cortex A8, we dual-issue the maximum amount (9 cycles) between the
; latter two categories, meaning the whole loop should run in 10 cycles per
; iteration, barring cache misses.
;
; Load x[0...7]
VLD1.16 {d6, d7}, [r4]!
; Unlike VMOV, VAND is a data processsing instruction (and doesn't get
; assembled to VMOV, like VORR would), so it dual-issues with the prior VLD1.
VAND d3, d5, d5
SUBS r12, r12, #8
; Load y[4...11]
VLD1.16 {d4, d5}, [r5]!
VMLAL.S16 q0, d3, d6[0]
VEXT.16 d16, d3, d4, #1
VMLAL.S16 q0, d4, d7[0]
VEXT.16 d17, d4, d5, #1
VMLAL.S16 q0, d16, d6[1]
VEXT.16 d16, d3, d4, #2
VMLAL.S16 q0, d17, d7[1]
VEXT.16 d17, d4, d5, #2
VMLAL.S16 q0, d16, d6[2]
VEXT.16 d16, d3, d4, #3
VMLAL.S16 q0, d17, d7[2]
VEXT.16 d17, d4, d5, #3
VMLAL.S16 q0, d16, d6[3]
VMLAL.S16 q0, d17, d7[3]
BGT xcorr_kernel_neon_process8
; Process 4 samples here if we have > 4 left (still reading one extra y value).
xcorr_kernel_neon_process4
ADDS r12, r12, #4
BLE xcorr_kernel_neon_process2
; Load x[0...3]
VLD1.16 d6, [r4]!
; Use VAND since it's a data processing instruction again.
VAND d4, d5, d5
SUB r12, r12, #4
; Load y[4...7]
VLD1.16 d5, [r5]!
VMLAL.S16 q0, d4, d6[0]
VEXT.16 d16, d4, d5, #1
VMLAL.S16 q0, d16, d6[1]
VEXT.16 d16, d4, d5, #2
VMLAL.S16 q0, d16, d6[2]
VEXT.16 d16, d4, d5, #3
VMLAL.S16 q0, d16, d6[3]
; Process 2 samples here if we have > 2 left (still reading one extra y value).
xcorr_kernel_neon_process2
ADDS r12, r12, #2
BLE xcorr_kernel_neon_process1
; Load x[0...1]
VLD2.16 {d6[],d7[]}, [r4]!
; Use VAND since it's a data processing instruction again.
VAND d4, d5, d5
SUB r12, r12, #2
; Load y[4...5]
VLD1.32 {d5[]}, [r5]!
VMLAL.S16 q0, d4, d6
VEXT.16 d16, d4, d5, #1
; Replace bottom copy of {y5,y4} in d5 with {y3,y2} from d4, using VSRI
; instead of VEXT, since it's a data-processing instruction.
VSRI.64 d5, d4, #32
VMLAL.S16 q0, d16, d7
; Process 1 sample using the extra y value we loaded above.
xcorr_kernel_neon_process1
; Load next *x
VLD1.16 {d6[]}, [r4]!
ADDS r12, r12, #1
; y[0...3] are left in d5 from prior iteration(s) (if any)
VMLAL.S16 q0, d5, d6
MOVLE pc, lr
; Now process 1 last sample, not reading ahead.
; Load last *y
VLD1.16 {d4[]}, [r5]!
VSRI.64 d4, d5, #16
; Load last *x
VLD1.16 {d6[]}, [r4]!
VMLAL.S16 q0, d4, d6
MOV pc, lr
ENDP
; opus_val32 celt_pitch_xcorr_neon(opus_val16 *_x, opus_val16 *_y,
; opus_val32 *xcorr, int len, int max_pitch)
celt_pitch_xcorr_neon PROC
; input:
; r0 = opus_val16 *_x
; r1 = opus_val16 *_y
; r2 = opus_val32 *xcorr
; r3 = int len
; output:
; r0 = int maxcorr
; internal usage:
; r4 = opus_val16 *x (for xcorr_kernel_neon())
; r5 = opus_val16 *y (for xcorr_kernel_neon())
; r6 = int max_pitch
; r12 = int j
; q15 = int maxcorr[4] (q15 is not used by xcorr_kernel_neon())
STMFD sp!, {r4-r6, lr}
LDR r6, [sp, #16]
VMOV.S32 q15, #1
; if (max_pitch < 4) goto celt_pitch_xcorr_neon_process4_done
SUBS r6, r6, #4
BLT celt_pitch_xcorr_neon_process4_done
celt_pitch_xcorr_neon_process4
; xcorr_kernel_neon parameters:
; r3 = len, r4 = _x, r5 = _y, q0 = {0, 0, 0, 0}
MOV r4, r0
MOV r5, r1
VEOR q0, q0, q0
; xcorr_kernel_neon only modifies r4, r5, r12, and q0...q3.
; So we don't save/restore any other registers.
BL xcorr_kernel_neon
SUBS r6, r6, #4
VST1.32 {q0}, [r2]!
; _y += 4
ADD r1, r1, #8
VMAX.S32 q15, q15, q0
; if (max_pitch < 4) goto celt_pitch_xcorr_neon_process4_done
BGE celt_pitch_xcorr_neon_process4
; We have less than 4 sums left to compute.
celt_pitch_xcorr_neon_process4_done
ADDS r6, r6, #4
; Reduce maxcorr to a single value
VMAX.S32 d30, d30, d31
VPMAX.S32 d30, d30, d30
; if (max_pitch <= 0) goto celt_pitch_xcorr_neon_done
BLE celt_pitch_xcorr_neon_done
; Now compute each remaining sum one at a time.
celt_pitch_xcorr_neon_process_remaining
MOV r4, r0
MOV r5, r1
VMOV.I32 q0, #0
SUBS r12, r3, #8
BLT celt_pitch_xcorr_neon_process_remaining4
; Sum terms 8 at a time.
celt_pitch_xcorr_neon_process_remaining_loop8
; Load x[0...7]
VLD1.16 {q1}, [r4]!
; Load y[0...7]
VLD1.16 {q2}, [r5]!
SUBS r12, r12, #8
VMLAL.S16 q0, d4, d2
VMLAL.S16 q0, d5, d3
BGE celt_pitch_xcorr_neon_process_remaining_loop8
; Sum terms 4 at a time.
celt_pitch_xcorr_neon_process_remaining4
ADDS r12, r12, #4
BLT celt_pitch_xcorr_neon_process_remaining4_done
; Load x[0...3]
VLD1.16 {d2}, [r4]!
; Load y[0...3]
VLD1.16 {d3}, [r5]!
SUB r12, r12, #4
VMLAL.S16 q0, d3, d2
celt_pitch_xcorr_neon_process_remaining4_done
; Reduce the sum to a single value.
VADD.S32 d0, d0, d1
VPADDL.S32 d0, d0
ADDS r12, r12, #4
BLE celt_pitch_xcorr_neon_process_remaining_loop_done
; Sum terms 1 at a time.
celt_pitch_xcorr_neon_process_remaining_loop1
VLD1.16 {d2[]}, [r4]!
VLD1.16 {d3[]}, [r5]!
SUBS r12, r12, #1
VMLAL.S16 q0, d2, d3
BGT celt_pitch_xcorr_neon_process_remaining_loop1
celt_pitch_xcorr_neon_process_remaining_loop_done
VST1.32 {d0[0]}, [r2]!
VMAX.S32 d30, d30, d0
SUBS r6, r6, #1
; _y++
ADD r1, r1, #2
; if (--max_pitch > 0) goto celt_pitch_xcorr_neon_process_remaining
BGT celt_pitch_xcorr_neon_process_remaining
celt_pitch_xcorr_neon_done
VMOV.32 r0, d30[0]
LDMFD sp!, {r4-r6, pc}
ENDP
ENDIF
IF OPUS_ARM_MAY_HAVE_EDSP
; This will get used on ARMv7 devices without NEON, so it has been optimized
; to take advantage of dual-issuing where possible.
xcorr_kernel_edsp PROC
; input:
; r3 = int len
; r4 = opus_val16 *_x (must be 32-bit aligned)
; r5 = opus_val16 *_y (must be 32-bit aligned)
; r6...r9 = opus_val32 sum[4]
; output:
; r6...r9 = opus_val32 sum[4]
; preserved: r0-r5
; internal usage
; r2 = int j
; r12,r14 = opus_val16 x[4]
; r10,r11 = opus_val16 y[4]
STMFD sp!, {r2,r4,r5,lr}
LDR r10, [r5], #4 ; Load y[0...1]
SUBS r2, r3, #4 ; j = len-4
LDR r11, [r5], #4 ; Load y[2...3]
BLE xcorr_kernel_edsp_process4_done
LDR r12, [r4], #4 ; Load x[0...1]
; Stall
xcorr_kernel_edsp_process4
; The multiplies must issue from pipeline 0, and can't dual-issue with each
; other. Every other instruction here dual-issues with a multiply, and is
; thus "free". There should be no stalls in the body of the loop.
SMLABB r6, r12, r10, r6 ; sum[0] = MAC16_16(sum[0],x_0,y_0)
LDR r14, [r4], #4 ; Load x[2...3]
SMLABT r7, r12, r10, r7 ; sum[1] = MAC16_16(sum[1],x_0,y_1)
SUBS r2, r2, #4 ; j-=4
SMLABB r8, r12, r11, r8 ; sum[2] = MAC16_16(sum[2],x_0,y_2)
SMLABT r9, r12, r11, r9 ; sum[3] = MAC16_16(sum[3],x_0,y_3)
SMLATT r6, r12, r10, r6 ; sum[0] = MAC16_16(sum[0],x_1,y_1)
LDR r10, [r5], #4 ; Load y[4...5]
SMLATB r7, r12, r11, r7 ; sum[1] = MAC16_16(sum[1],x_1,y_2)
SMLATT r8, r12, r11, r8 ; sum[2] = MAC16_16(sum[2],x_1,y_3)
SMLATB r9, r12, r10, r9 ; sum[3] = MAC16_16(sum[3],x_1,y_4)
LDRGT r12, [r4], #4 ; Load x[0...1]
SMLABB r6, r14, r11, r6 ; sum[0] = MAC16_16(sum[0],x_2,y_2)
SMLABT r7, r14, r11, r7 ; sum[1] = MAC16_16(sum[1],x_2,y_3)
SMLABB r8, r14, r10, r8 ; sum[2] = MAC16_16(sum[2],x_2,y_4)
SMLABT r9, r14, r10, r9 ; sum[3] = MAC16_16(sum[3],x_2,y_5)
SMLATT r6, r14, r11, r6 ; sum[0] = MAC16_16(sum[0],x_3,y_3)
LDR r11, [r5], #4 ; Load y[6...7]
SMLATB r7, r14, r10, r7 ; sum[1] = MAC16_16(sum[1],x_3,y_4)
SMLATT r8, r14, r10, r8 ; sum[2] = MAC16_16(sum[2],x_3,y_5)
SMLATB r9, r14, r11, r9 ; sum[3] = MAC16_16(sum[3],x_3,y_6)
BGT xcorr_kernel_edsp_process4
xcorr_kernel_edsp_process4_done
ADDS r2, r2, #4
BLE xcorr_kernel_edsp_done
LDRH r12, [r4], #2 ; r12 = *x++
SUBS r2, r2, #1 ; j--
; Stall
SMLABB r6, r12, r10, r6 ; sum[0] = MAC16_16(sum[0],x,y_0)
LDRGTH r14, [r4], #2 ; r14 = *x++
SMLABT r7, r12, r10, r7 ; sum[1] = MAC16_16(sum[1],x,y_1)
SMLABB r8, r12, r11, r8 ; sum[2] = MAC16_16(sum[2],x,y_2)
SMLABT r9, r12, r11, r9 ; sum[3] = MAC16_16(sum[3],x,y_3)
BLE xcorr_kernel_edsp_done
SMLABT r6, r14, r10, r6 ; sum[0] = MAC16_16(sum[0],x,y_1)
SUBS r2, r2, #1 ; j--
SMLABB r7, r14, r11, r7 ; sum[1] = MAC16_16(sum[1],x,y_2)
LDRH r10, [r5], #2 ; r10 = y_4 = *y++
SMLABT r8, r14, r11, r8 ; sum[2] = MAC16_16(sum[2],x,y_3)
LDRGTH r12, [r4], #2 ; r12 = *x++
SMLABB r9, r14, r10, r9 ; sum[3] = MAC16_16(sum[3],x,y_4)
BLE xcorr_kernel_edsp_done
SMLABB r6, r12, r11, r6 ; sum[0] = MAC16_16(sum[0],tmp,y_2)
CMP r2, #1 ; j--
SMLABT r7, r12, r11, r7 ; sum[1] = MAC16_16(sum[1],tmp,y_3)
LDRH r2, [r5], #2 ; r2 = y_5 = *y++
SMLABB r8, r12, r10, r8 ; sum[2] = MAC16_16(sum[2],tmp,y_4)
LDRGTH r14, [r4] ; r14 = *x
SMLABB r9, r12, r2, r9 ; sum[3] = MAC16_16(sum[3],tmp,y_5)
BLE xcorr_kernel_edsp_done
SMLABT r6, r14, r11, r6 ; sum[0] = MAC16_16(sum[0],tmp,y_3)
LDRH r11, [r5] ; r11 = y_6 = *y
SMLABB r7, r14, r10, r7 ; sum[1] = MAC16_16(sum[1],tmp,y_4)
SMLABB r8, r14, r2, r8 ; sum[2] = MAC16_16(sum[2],tmp,y_5)
SMLABB r9, r14, r11, r9 ; sum[3] = MAC16_16(sum[3],tmp,y_6)
xcorr_kernel_edsp_done
LDMFD sp!, {r2,r4,r5,pc}
ENDP
celt_pitch_xcorr_edsp PROC
; input:
; r0 = opus_val16 *_x (must be 32-bit aligned)
; r1 = opus_val16 *_y (only needs to be 16-bit aligned)
; r2 = opus_val32 *xcorr
; r3 = int len
; output:
; r0 = maxcorr
; internal usage
; r4 = opus_val16 *x
; r5 = opus_val16 *y
; r6 = opus_val32 sum0
; r7 = opus_val32 sum1
; r8 = opus_val32 sum2
; r9 = opus_val32 sum3
; r1 = int max_pitch
; r12 = int j
STMFD sp!, {r4-r11, lr}
MOV r5, r1
LDR r1, [sp, #36]
MOV r4, r0
TST r5, #3
; maxcorr = 1
MOV r0, #1
BEQ celt_pitch_xcorr_edsp_process1u_done
; Compute one sum at the start to make y 32-bit aligned.
SUBS r12, r3, #4
; r14 = sum = 0
MOV r14, #0
LDRH r8, [r5], #2
BLE celt_pitch_xcorr_edsp_process1u_loop4_done
LDR r6, [r4], #4
MOV r8, r8, LSL #16
celt_pitch_xcorr_edsp_process1u_loop4
LDR r9, [r5], #4
SMLABT r14, r6, r8, r14 ; sum = MAC16_16(sum, x_0, y_0)
LDR r7, [r4], #4
SMLATB r14, r6, r9, r14 ; sum = MAC16_16(sum, x_1, y_1)
LDR r8, [r5], #4
SMLABT r14, r7, r9, r14 ; sum = MAC16_16(sum, x_2, y_2)
SUBS r12, r12, #4 ; j-=4
SMLATB r14, r7, r8, r14 ; sum = MAC16_16(sum, x_3, y_3)
LDRGT r6, [r4], #4
BGT celt_pitch_xcorr_edsp_process1u_loop4
MOV r8, r8, LSR #16
celt_pitch_xcorr_edsp_process1u_loop4_done
ADDS r12, r12, #4
celt_pitch_xcorr_edsp_process1u_loop1
LDRGEH r6, [r4], #2
; Stall
SMLABBGE r14, r6, r8, r14 ; sum = MAC16_16(sum, *x, *y)
SUBGES r12, r12, #1
LDRGTH r8, [r5], #2
BGT celt_pitch_xcorr_edsp_process1u_loop1
; Restore _x
SUB r4, r4, r3, LSL #1
; Restore and advance _y
SUB r5, r5, r3, LSL #1
; maxcorr = max(maxcorr, sum)
CMP r0, r14
ADD r5, r5, #2
MOVLT r0, r14
SUBS r1, r1, #1
; xcorr[i] = sum
STR r14, [r2], #4
BLE celt_pitch_xcorr_edsp_done
celt_pitch_xcorr_edsp_process1u_done
; if (max_pitch < 4) goto celt_pitch_xcorr_edsp_process2
SUBS r1, r1, #4
BLT celt_pitch_xcorr_edsp_process2
celt_pitch_xcorr_edsp_process4
; xcorr_kernel_edsp parameters:
; r3 = len, r4 = _x, r5 = _y, r6...r9 = sum[4] = {0, 0, 0, 0}
MOV r6, #0
MOV r7, #0
MOV r8, #0
MOV r9, #0
BL xcorr_kernel_edsp ; xcorr_kernel_edsp(_x, _y+i, xcorr+i, len)
; maxcorr = max(maxcorr, sum0, sum1, sum2, sum3)
CMP r0, r6
; _y+=4
ADD r5, r5, #8
MOVLT r0, r6
CMP r0, r7
MOVLT r0, r7
CMP r0, r8
MOVLT r0, r8
CMP r0, r9
MOVLT r0, r9
STMIA r2!, {r6-r9}
SUBS r1, r1, #4
BGE celt_pitch_xcorr_edsp_process4
celt_pitch_xcorr_edsp_process2
ADDS r1, r1, #2
BLT celt_pitch_xcorr_edsp_process1a
SUBS r12, r3, #4
; {r10, r11} = {sum0, sum1} = {0, 0}
MOV r10, #0
MOV r11, #0
LDR r8, [r5], #4
BLE celt_pitch_xcorr_edsp_process2_loop_done
LDR r6, [r4], #4
LDR r9, [r5], #4
celt_pitch_xcorr_edsp_process2_loop4
SMLABB r10, r6, r8, r10 ; sum0 = MAC16_16(sum0, x_0, y_0)
LDR r7, [r4], #4
SMLABT r11, r6, r8, r11 ; sum1 = MAC16_16(sum1, x_0, y_1)
SUBS r12, r12, #4 ; j-=4
SMLATT r10, r6, r8, r10 ; sum0 = MAC16_16(sum0, x_1, y_1)
LDR r8, [r5], #4
SMLATB r11, r6, r9, r11 ; sum1 = MAC16_16(sum1, x_1, y_2)
LDRGT r6, [r4], #4
SMLABB r10, r7, r9, r10 ; sum0 = MAC16_16(sum0, x_2, y_2)
SMLABT r11, r7, r9, r11 ; sum1 = MAC16_16(sum1, x_2, y_3)
SMLATT r10, r7, r9, r10 ; sum0 = MAC16_16(sum0, x_3, y_3)
LDRGT r9, [r5], #4
SMLATB r11, r7, r8, r11 ; sum1 = MAC16_16(sum1, x_3, y_4)
BGT celt_pitch_xcorr_edsp_process2_loop4
celt_pitch_xcorr_edsp_process2_loop_done
ADDS r12, r12, #2
BLE celt_pitch_xcorr_edsp_process2_1
LDR r6, [r4], #4
; Stall
SMLABB r10, r6, r8, r10 ; sum0 = MAC16_16(sum0, x_0, y_0)
LDR r9, [r5], #4
SMLABT r11, r6, r8, r11 ; sum1 = MAC16_16(sum1, x_0, y_1)
SUB r12, r12, #2
SMLATT r10, r6, r8, r10 ; sum0 = MAC16_16(sum0, x_1, y_1)
MOV r8, r9
SMLATB r11, r6, r9, r11 ; sum1 = MAC16_16(sum1, x_1, y_2)
celt_pitch_xcorr_edsp_process2_1
LDRH r6, [r4], #2
ADDS r12, r12, #1
; Stall
SMLABB r10, r6, r8, r10 ; sum0 = MAC16_16(sum0, x_0, y_0)
LDRGTH r7, [r4], #2
SMLABT r11, r6, r8, r11 ; sum1 = MAC16_16(sum1, x_0, y_1)
BLE celt_pitch_xcorr_edsp_process2_done
LDRH r9, [r5], #2
SMLABT r10, r7, r8, r10 ; sum0 = MAC16_16(sum0, x_0, y_1)
SMLABB r11, r7, r9, r11 ; sum1 = MAC16_16(sum1, x_0, y_2)
celt_pitch_xcorr_edsp_process2_done
; Restore _x
SUB r4, r4, r3, LSL #1
; Restore and advance _y
SUB r5, r5, r3, LSL #1
; maxcorr = max(maxcorr, sum0)
CMP r0, r10
ADD r5, r5, #2
MOVLT r0, r10
SUB r1, r1, #2
; maxcorr = max(maxcorr, sum1)
CMP r0, r11
; xcorr[i] = sum
STR r10, [r2], #4
MOVLT r0, r11
STR r11, [r2], #4
celt_pitch_xcorr_edsp_process1a
ADDS r1, r1, #1
BLT celt_pitch_xcorr_edsp_done
SUBS r12, r3, #4
; r14 = sum = 0
MOV r14, #0
BLT celt_pitch_xcorr_edsp_process1a_loop_done
LDR r6, [r4], #4
LDR r8, [r5], #4
LDR r7, [r4], #4
LDR r9, [r5], #4
celt_pitch_xcorr_edsp_process1a_loop4
SMLABB r14, r6, r8, r14 ; sum = MAC16_16(sum, x_0, y_0)
SUBS r12, r12, #4 ; j-=4
SMLATT r14, r6, r8, r14 ; sum = MAC16_16(sum, x_1, y_1)
LDRGE r6, [r4], #4
SMLABB r14, r7, r9, r14 ; sum = MAC16_16(sum, x_2, y_2)
LDRGE r8, [r5], #4
SMLATT r14, r7, r9, r14 ; sum = MAC16_16(sum, x_3, y_3)
LDRGE r7, [r4], #4
LDRGE r9, [r5], #4
BGE celt_pitch_xcorr_edsp_process1a_loop4
celt_pitch_xcorr_edsp_process1a_loop_done
ADDS r12, r12, #2
LDRGE r6, [r4], #4
LDRGE r8, [r5], #4
; Stall
SMLABBGE r14, r6, r8, r14 ; sum = MAC16_16(sum, x_0, y_0)
SUBGE r12, r12, #2
SMLATTGE r14, r6, r8, r14 ; sum = MAC16_16(sum, x_1, y_1)
ADDS r12, r12, #1
LDRGEH r6, [r4], #2
LDRGEH r8, [r5], #2
; Stall
SMLABBGE r14, r6, r8, r14 ; sum = MAC16_16(sum, *x, *y)
; maxcorr = max(maxcorr, sum)
CMP r0, r14
; xcorr[i] = sum
STR r14, [r2], #4
MOVLT r0, r14
celt_pitch_xcorr_edsp_done
LDMFD sp!, {r4-r11, pc}
ENDP
ENDIF
END

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/* Copyright (C) 2013 Xiph.Org Foundation and contributors */
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef FIXED_ARMv4_H
#define FIXED_ARMv4_H
/** 16x32 multiplication, followed by a 16-bit shift right. Results fits in 32 bits */
#undef MULT16_32_Q16
static OPUS_INLINE opus_val32 MULT16_32_Q16_armv4(opus_val16 a, opus_val32 b)
{
unsigned rd_lo;
int rd_hi;
__asm__(
"#MULT16_32_Q16\n\t"
"smull %0, %1, %2, %3\n\t"
: "=&r"(rd_lo), "=&r"(rd_hi)
: "%r"(b),"r"(a<<16)
);
return rd_hi;
}
#define MULT16_32_Q16(a, b) (MULT16_32_Q16_armv4(a, b))
/** 16x32 multiplication, followed by a 15-bit shift right. Results fits in 32 bits */
#undef MULT16_32_Q15
static OPUS_INLINE opus_val32 MULT16_32_Q15_armv4(opus_val16 a, opus_val32 b)
{
unsigned rd_lo;
int rd_hi;
__asm__(
"#MULT16_32_Q15\n\t"
"smull %0, %1, %2, %3\n\t"
: "=&r"(rd_lo), "=&r"(rd_hi)
: "%r"(b), "r"(a<<16)
);
/*We intentionally don't OR in the high bit of rd_lo for speed.*/
return rd_hi<<1;
}
#define MULT16_32_Q15(a, b) (MULT16_32_Q15_armv4(a, b))
/** 16x32 multiply, followed by a 15-bit shift right and 32-bit add.
b must fit in 31 bits.
Result fits in 32 bits. */
#undef MAC16_32_Q15
#define MAC16_32_Q15(c, a, b) ADD32(c, MULT16_32_Q15(a, b))
/** 32x32 multiplication, followed by a 31-bit shift right. Results fits in 32 bits */
#undef MULT32_32_Q31
#define MULT32_32_Q31(a,b) (opus_val32)((((opus_int64)(a)) * ((opus_int64)(b)))>>31)
#endif

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/* Copyright (C) 2007-2009 Xiph.Org Foundation
Copyright (C) 2003-2008 Jean-Marc Valin
Copyright (C) 2007-2008 CSIRO
Copyright (C) 2013 Parrot */
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef FIXED_ARMv5E_H
#define FIXED_ARMv5E_H
#include "fixed_armv4.h"
/** 16x32 multiplication, followed by a 16-bit shift right. Results fits in 32 bits */
#undef MULT16_32_Q16
static OPUS_INLINE opus_val32 MULT16_32_Q16_armv5e(opus_val16 a, opus_val32 b)
{
int res;
__asm__(
"#MULT16_32_Q16\n\t"
"smulwb %0, %1, %2\n\t"
: "=r"(res)
: "r"(b),"r"(a)
);
return res;
}
#define MULT16_32_Q16(a, b) (MULT16_32_Q16_armv5e(a, b))
/** 16x32 multiplication, followed by a 15-bit shift right. Results fits in 32 bits */
#undef MULT16_32_Q15
static OPUS_INLINE opus_val32 MULT16_32_Q15_armv5e(opus_val16 a, opus_val32 b)
{
int res;
__asm__(
"#MULT16_32_Q15\n\t"
"smulwb %0, %1, %2\n\t"
: "=r"(res)
: "r"(b), "r"(a)
);
return res<<1;
}
#define MULT16_32_Q15(a, b) (MULT16_32_Q15_armv5e(a, b))
/** 16x32 multiply, followed by a 15-bit shift right and 32-bit add.
b must fit in 31 bits.
Result fits in 32 bits. */
#undef MAC16_32_Q15
static OPUS_INLINE opus_val32 MAC16_32_Q15_armv5e(opus_val32 c, opus_val16 a,
opus_val32 b)
{
int res;
__asm__(
"#MAC16_32_Q15\n\t"
"smlawb %0, %1, %2, %3;\n"
: "=r"(res)
: "r"(b<<1), "r"(a), "r"(c)
);
return res;
}
#define MAC16_32_Q15(c, a, b) (MAC16_32_Q15_armv5e(c, a, b))
/** 16x16 multiply-add where the result fits in 32 bits */
#undef MAC16_16
static OPUS_INLINE opus_val32 MAC16_16_armv5e(opus_val32 c, opus_val16 a,
opus_val16 b)
{
int res;
__asm__(
"#MAC16_16\n\t"
"smlabb %0, %1, %2, %3;\n"
: "=r"(res)
: "r"(a), "r"(b), "r"(c)
);
return res;
}
#define MAC16_16(c, a, b) (MAC16_16_armv5e(c, a, b))
/** 16x16 multiplication where the result fits in 32 bits */
#undef MULT16_16
static OPUS_INLINE opus_val32 MULT16_16_armv5e(opus_val16 a, opus_val16 b)
{
int res;
__asm__(
"#MULT16_16\n\t"
"smulbb %0, %1, %2;\n"
: "=r"(res)
: "r"(a), "r"(b)
);
return res;
}
#define MULT16_16(a, b) (MULT16_16_armv5e(a, b))
#endif

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/*Copyright (c) 2013, Xiph.Org Foundation and contributors.
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.*/
#ifndef KISS_FFT_ARMv4_H
#define KISS_FFT_ARMv4_H
#if !defined(KISS_FFT_GUTS_H)
#error "This file should only be included from _kiss_fft_guts.h"
#endif
#ifdef FIXED_POINT
#undef C_MUL
#define C_MUL(m,a,b) \
do{ \
int br__; \
int bi__; \
int tt__; \
__asm__ __volatile__( \
"#C_MUL\n\t" \
"ldrsh %[br], [%[bp], #0]\n\t" \
"ldm %[ap], {r0,r1}\n\t" \
"ldrsh %[bi], [%[bp], #2]\n\t" \
"smull %[tt], %[mi], r1, %[br]\n\t" \
"smlal %[tt], %[mi], r0, %[bi]\n\t" \
"rsb %[bi], %[bi], #0\n\t" \
"smull %[br], %[mr], r0, %[br]\n\t" \
"mov %[tt], %[tt], lsr #15\n\t" \
"smlal %[br], %[mr], r1, %[bi]\n\t" \
"orr %[mi], %[tt], %[mi], lsl #17\n\t" \
"mov %[br], %[br], lsr #15\n\t" \
"orr %[mr], %[br], %[mr], lsl #17\n\t" \
: [mr]"=r"((m).r), [mi]"=r"((m).i), \
[br]"=&r"(br__), [bi]"=r"(bi__), [tt]"=r"(tt__) \
: [ap]"r"(&(a)), [bp]"r"(&(b)) \
: "r0", "r1" \
); \
} \
while(0)
#undef C_MUL4
#define C_MUL4(m,a,b) \
do{ \
int br__; \
int bi__; \
int tt__; \
__asm__ __volatile__( \
"#C_MUL4\n\t" \
"ldrsh %[br], [%[bp], #0]\n\t" \
"ldm %[ap], {r0,r1}\n\t" \
"ldrsh %[bi], [%[bp], #2]\n\t" \
"smull %[tt], %[mi], r1, %[br]\n\t" \
"smlal %[tt], %[mi], r0, %[bi]\n\t" \
"rsb %[bi], %[bi], #0\n\t" \
"smull %[br], %[mr], r0, %[br]\n\t" \
"mov %[tt], %[tt], lsr #17\n\t" \
"smlal %[br], %[mr], r1, %[bi]\n\t" \
"orr %[mi], %[tt], %[mi], lsl #15\n\t" \
"mov %[br], %[br], lsr #17\n\t" \
"orr %[mr], %[br], %[mr], lsl #15\n\t" \
: [mr]"=r"((m).r), [mi]"=r"((m).i), \
[br]"=&r"(br__), [bi]"=r"(bi__), [tt]"=r"(tt__) \
: [ap]"r"(&(a)), [bp]"r"(&(b)) \
: "r0", "r1" \
); \
} \
while(0)
#undef C_MULC
#define C_MULC(m,a,b) \
do{ \
int br__; \
int bi__; \
int tt__; \
__asm__ __volatile__( \
"#C_MULC\n\t" \
"ldrsh %[br], [%[bp], #0]\n\t" \
"ldm %[ap], {r0,r1}\n\t" \
"ldrsh %[bi], [%[bp], #2]\n\t" \
"smull %[tt], %[mr], r0, %[br]\n\t" \
"smlal %[tt], %[mr], r1, %[bi]\n\t" \
"rsb %[bi], %[bi], #0\n\t" \
"smull %[br], %[mi], r1, %[br]\n\t" \
"mov %[tt], %[tt], lsr #15\n\t" \
"smlal %[br], %[mi], r0, %[bi]\n\t" \
"orr %[mr], %[tt], %[mr], lsl #17\n\t" \
"mov %[br], %[br], lsr #15\n\t" \
"orr %[mi], %[br], %[mi], lsl #17\n\t" \
: [mr]"=r"((m).r), [mi]"=r"((m).i), \
[br]"=&r"(br__), [bi]"=r"(bi__), [tt]"=r"(tt__) \
: [ap]"r"(&(a)), [bp]"r"(&(b)) \
: "r0", "r1" \
); \
} \
while(0)
#endif /* FIXED_POINT */
#endif /* KISS_FFT_ARMv4_H */

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/*Copyright (c) 2013, Xiph.Org Foundation and contributors.
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.*/
#ifndef KISS_FFT_ARMv5E_H
#define KISS_FFT_ARMv5E_H
#if !defined(KISS_FFT_GUTS_H)
#error "This file should only be included from _kiss_fft_guts.h"
#endif
#ifdef FIXED_POINT
#if defined(__thumb__)||defined(__thumb2__)
#define LDRD_CONS "Q"
#else
#define LDRD_CONS "Uq"
#endif
#undef C_MUL
#define C_MUL(m,a,b) \
do{ \
int mr1__; \
int mr2__; \
int mi__; \
long long aval__; \
int bval__; \
__asm__( \
"#C_MUL\n\t" \
"ldrd %[aval], %H[aval], %[ap]\n\t" \
"ldr %[bval], %[bp]\n\t" \
"smulwb %[mi], %H[aval], %[bval]\n\t" \
"smulwb %[mr1], %[aval], %[bval]\n\t" \
"smulwt %[mr2], %H[aval], %[bval]\n\t" \
"smlawt %[mi], %[aval], %[bval], %[mi]\n\t" \
: [mr1]"=r"(mr1__), [mr2]"=r"(mr2__), [mi]"=r"(mi__), \
[aval]"=&r"(aval__), [bval]"=r"(bval__) \
: [ap]LDRD_CONS(a), [bp]"m"(b) \
); \
(m).r = SHL32(SUB32(mr1__, mr2__), 1); \
(m).i = SHL32(mi__, 1); \
} \
while(0)
#undef C_MUL4
#define C_MUL4(m,a,b) \
do{ \
int mr1__; \
int mr2__; \
int mi__; \
long long aval__; \
int bval__; \
__asm__( \
"#C_MUL4\n\t" \
"ldrd %[aval], %H[aval], %[ap]\n\t" \
"ldr %[bval], %[bp]\n\t" \
"smulwb %[mi], %H[aval], %[bval]\n\t" \
"smulwb %[mr1], %[aval], %[bval]\n\t" \
"smulwt %[mr2], %H[aval], %[bval]\n\t" \
"smlawt %[mi], %[aval], %[bval], %[mi]\n\t" \
: [mr1]"=r"(mr1__), [mr2]"=r"(mr2__), [mi]"=r"(mi__), \
[aval]"=&r"(aval__), [bval]"=r"(bval__) \
: [ap]LDRD_CONS(a), [bp]"m"(b) \
); \
(m).r = SHR32(SUB32(mr1__, mr2__), 1); \
(m).i = SHR32(mi__, 1); \
} \
while(0)
#undef C_MULC
#define C_MULC(m,a,b) \
do{ \
int mr__; \
int mi1__; \
int mi2__; \
long long aval__; \
int bval__; \
__asm__( \
"#C_MULC\n\t" \
"ldrd %[aval], %H[aval], %[ap]\n\t" \
"ldr %[bval], %[bp]\n\t" \
"smulwb %[mr], %[aval], %[bval]\n\t" \
"smulwb %[mi1], %H[aval], %[bval]\n\t" \
"smulwt %[mi2], %[aval], %[bval]\n\t" \
"smlawt %[mr], %H[aval], %[bval], %[mr]\n\t" \
: [mr]"=r"(mr__), [mi1]"=r"(mi1__), [mi2]"=r"(mi2__), \
[aval]"=&r"(aval__), [bval]"=r"(bval__) \
: [ap]LDRD_CONS(a), [bp]"m"(b) \
); \
(m).r = SHL32(mr__, 1); \
(m).i = SHL32(SUB32(mi1__, mi2__), 1); \
} \
while(0)
#endif /* FIXED_POINT */
#endif /* KISS_FFT_GUTS_H */

57
src/engine/external/opus/celt/arm/pitch_arm.h vendored Normal file
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/* Copyright (c) 2010 Xiph.Org Foundation
* Copyright (c) 2013 Parrot */
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#if !defined(PITCH_ARM_H)
# define PITCH_ARM_H
# include "armcpu.h"
# if defined(FIXED_POINT)
# if defined(OPUS_ARM_MAY_HAVE_NEON)
opus_val32 celt_pitch_xcorr_neon(const opus_val16 *_x, const opus_val16 *_y,
opus_val32 *xcorr, int len, int max_pitch);
# endif
# if defined(OPUS_ARM_MAY_HAVE_MEDIA)
# define celt_pitch_xcorr_media MAY_HAVE_EDSP(celt_pitch_xcorr)
# endif
# if defined(OPUS_ARM_MAY_HAVE_EDSP)
opus_val32 celt_pitch_xcorr_edsp(const opus_val16 *_x, const opus_val16 *_y,
opus_val32 *xcorr, int len, int max_pitch);
# endif
# if !defined(OPUS_HAVE_RTCD)
# define OVERRIDE_PITCH_XCORR (1)
# define celt_pitch_xcorr(_x, _y, xcorr, len, max_pitch, arch) \
((void)(arch),PRESUME_NEON(celt_pitch_xcorr)(_x, _y, xcorr, len, max_pitch))
# endif
# endif
#endif

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/* Copyright (c) 2007-2008 CSIRO
Copyright (c) 2007-2009 Xiph.Org Foundation
Copyright (c) 2008-2009 Gregory Maxwell
Written by Jean-Marc Valin and Gregory Maxwell */
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef BANDS_H
#define BANDS_H
#include "arch.h"
#include "modes.h"
#include "entenc.h"
#include "entdec.h"
#include "rate.h"
/** Compute the amplitude (sqrt energy) in each of the bands
* @param m Mode data
* @param X Spectrum
* @param bandE Square root of the energy for each band (returned)
*/
void compute_band_energies(const CELTMode *m, const celt_sig *X, celt_ener *bandE, int end, int C, int M);
/*void compute_noise_energies(const CELTMode *m, const celt_sig *X, const opus_val16 *tonality, celt_ener *bandE);*/
/** Normalise each band of X such that the energy in each band is
equal to 1
* @param m Mode data
* @param X Spectrum (returned normalised)
* @param bandE Square root of the energy for each band
*/
void normalise_bands(const CELTMode *m, const celt_sig * OPUS_RESTRICT freq, celt_norm * OPUS_RESTRICT X, const celt_ener *bandE, int end, int C, int M);
/** Denormalise each band of X to restore full amplitude
* @param m Mode data
* @param X Spectrum (returned de-normalised)
* @param bandE Square root of the energy for each band
*/
void denormalise_bands(const CELTMode *m, const celt_norm * OPUS_RESTRICT X,
celt_sig * OPUS_RESTRICT freq, const opus_val16 *bandE, int start, int end, int C, int M);
#define SPREAD_NONE (0)
#define SPREAD_LIGHT (1)
#define SPREAD_NORMAL (2)
#define SPREAD_AGGRESSIVE (3)
int spreading_decision(const CELTMode *m, celt_norm *X, int *average,
int last_decision, int *hf_average, int *tapset_decision, int update_hf,
int end, int C, int M);
#ifdef MEASURE_NORM_MSE
void measure_norm_mse(const CELTMode *m, float *X, float *X0, float *bandE, float *bandE0, int M, int N, int C);
#endif
void haar1(celt_norm *X, int N0, int stride);
/** Quantisation/encoding of the residual spectrum
* @param encode flag that indicates whether we're encoding (1) or decoding (0)
* @param m Mode data
* @param start First band to process
* @param end Last band to process + 1
* @param X Residual (normalised)
* @param Y Residual (normalised) for second channel (or NULL for mono)
* @param collapse_masks Anti-collapse tracking mask
* @param bandE Square root of the energy for each band
* @param pulses Bit allocation (per band) for PVQ
* @param shortBlocks Zero for long blocks, non-zero for short blocks
* @param spread Amount of spreading to use
* @param dual_stereo Zero for MS stereo, non-zero for dual stereo
* @param intensity First band to use intensity stereo
* @param tf_res Time-frequency resolution change
* @param total_bits Total number of bits that can be used for the frame (including the ones already spent)
* @param balance Number of unallocated bits
* @param en Entropy coder state
* @param LM log2() of the number of 2.5 subframes in the frame
* @param codedBands Last band to receive bits + 1
* @param seed Random generator seed
*/
void quant_all_bands(int encode, const CELTMode *m, int start, int end,
celt_norm * X, celt_norm * Y, unsigned char *collapse_masks, const celt_ener *bandE, int *pulses,
int shortBlocks, int spread, int dual_stereo, int intensity, int *tf_res,
opus_int32 total_bits, opus_int32 balance, ec_ctx *ec, int M, int codedBands, opus_uint32 *seed);
void anti_collapse(const CELTMode *m, celt_norm *X_, unsigned char *collapse_masks, int LM, int C, int size,
int start, int end, opus_val16 *logE, opus_val16 *prev1logE,
opus_val16 *prev2logE, int *pulses, opus_uint32 seed);
opus_uint32 celt_lcg_rand(opus_uint32 seed);
int hysteresis_decision(opus_val16 val, const opus_val16 *thresholds, const opus_val16 *hysteresis, int N, int prev);
#endif /* BANDS_H */

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/* Copyright (c) 2007-2008 CSIRO
Copyright (c) 2007-2010 Xiph.Org Foundation
Copyright (c) 2008 Gregory Maxwell
Written by Jean-Marc Valin and Gregory Maxwell */
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#define CELT_C
#include "os_support.h"
#include "mdct.h"
#include <math.h>
#include "celt.h"
#include "pitch.h"
#include "bands.h"
#include "modes.h"
#include "entcode.h"
#include "quant_bands.h"
#include "rate.h"
#include "stack_alloc.h"
#include "mathops.h"
#include "float_cast.h"
#include <stdarg.h>
#include "celt_lpc.h"
#include "vq.h"
#ifndef PACKAGE_VERSION
#define PACKAGE_VERSION "unknown"
#endif
int resampling_factor(opus_int32 rate)
{
int ret;
switch (rate)
{
case 48000:
ret = 1;
break;
case 24000:
ret = 2;
break;
case 16000:
ret = 3;
break;
case 12000:
ret = 4;
break;
case 8000:
ret = 6;
break;
default:
#ifndef CUSTOM_MODES
celt_assert(0);
#endif
ret = 0;
break;
}
return ret;
}
#ifndef OVERRIDE_COMB_FILTER_CONST
static void comb_filter_const(opus_val32 *y, opus_val32 *x, int T, int N,
opus_val16 g10, opus_val16 g11, opus_val16 g12)
{
opus_val32 x0, x1, x2, x3, x4;
int i;
x4 = x[-T-2];
x3 = x[-T-1];
x2 = x[-T];
x1 = x[-T+1];
for (i=0;i<N;i++)
{
x0=x[i-T+2];
y[i] = x[i]
+ MULT16_32_Q15(g10,x2)
+ MULT16_32_Q15(g11,ADD32(x1,x3))
+ MULT16_32_Q15(g12,ADD32(x0,x4));
x4=x3;
x3=x2;
x2=x1;
x1=x0;
}
}
#endif
void comb_filter(opus_val32 *y, opus_val32 *x, int T0, int T1, int N,
opus_val16 g0, opus_val16 g1, int tapset0, int tapset1,
const opus_val16 *window, int overlap)
{
int i;
/* printf ("%d %d %f %f\n", T0, T1, g0, g1); */
opus_val16 g00, g01, g02, g10, g11, g12;
opus_val32 x0, x1, x2, x3, x4;
static const opus_val16 gains[3][3] = {
{QCONST16(0.3066406250f, 15), QCONST16(0.2170410156f, 15), QCONST16(0.1296386719f, 15)},
{QCONST16(0.4638671875f, 15), QCONST16(0.2680664062f, 15), QCONST16(0.f, 15)},
{QCONST16(0.7998046875f, 15), QCONST16(0.1000976562f, 15), QCONST16(0.f, 15)}};
if (g0==0 && g1==0)
{
/* OPT: Happens to work without the OPUS_MOVE(), but only because the current encoder already copies x to y */
if (x!=y)
OPUS_MOVE(y, x, N);
return;
}
g00 = MULT16_16_Q15(g0, gains[tapset0][0]);
g01 = MULT16_16_Q15(g0, gains[tapset0][1]);
g02 = MULT16_16_Q15(g0, gains[tapset0][2]);
g10 = MULT16_16_Q15(g1, gains[tapset1][0]);
g11 = MULT16_16_Q15(g1, gains[tapset1][1]);
g12 = MULT16_16_Q15(g1, gains[tapset1][2]);
x1 = x[-T1+1];
x2 = x[-T1 ];
x3 = x[-T1-1];
x4 = x[-T1-2];
for (i=0;i<overlap;i++)
{
opus_val16 f;
x0=x[i-T1+2];
f = MULT16_16_Q15(window[i],window[i]);
y[i] = x[i]
+ MULT16_32_Q15(MULT16_16_Q15((Q15ONE-f),g00),x[i-T0])
+ MULT16_32_Q15(MULT16_16_Q15((Q15ONE-f),g01),ADD32(x[i-T0+1],x[i-T0-1]))
+ MULT16_32_Q15(MULT16_16_Q15((Q15ONE-f),g02),ADD32(x[i-T0+2],x[i-T0-2]))
+ MULT16_32_Q15(MULT16_16_Q15(f,g10),x2)
+ MULT16_32_Q15(MULT16_16_Q15(f,g11),ADD32(x1,x3))
+ MULT16_32_Q15(MULT16_16_Q15(f,g12),ADD32(x0,x4));
x4=x3;
x3=x2;
x2=x1;
x1=x0;
}
if (g1==0)
{
/* OPT: Happens to work without the OPUS_MOVE(), but only because the current encoder already copies x to y */
if (x!=y)
OPUS_MOVE(y+overlap, x+overlap, N-overlap);
return;
}
/* Compute the part with the constant filter. */
comb_filter_const(y+i, x+i, T1, N-i, g10, g11, g12);
}
const signed char tf_select_table[4][8] = {
{0, -1, 0, -1, 0,-1, 0,-1},
{0, -1, 0, -2, 1, 0, 1,-1},
{0, -2, 0, -3, 2, 0, 1,-1},
{0, -2, 0, -3, 3, 0, 1,-1},
};
void init_caps(const CELTMode *m,int *cap,int LM,int C)
{
int i;
for (i=0;i<m->nbEBands;i++)
{
int N;
N=(m->eBands[i+1]-m->eBands[i])<<LM;
cap[i] = (m->cache.caps[m->nbEBands*(2*LM+C-1)+i]+64)*C*N>>2;
}
}
const char *opus_strerror(int error)
{
static const char * const error_strings[8] = {
"success",
"invalid argument",
"buffer too small",
"internal error",
"corrupted stream",
"request not implemented",
"invalid state",
"memory allocation failed"
};
if (error > 0 || error < -7)
return "unknown error";
else
return error_strings[-error];
}
const char *opus_get_version_string(void)
{
return "libopus " PACKAGE_VERSION
#ifdef FIXED_POINT
"-fixed"
#endif
#ifdef FUZZING
"-fuzzing"
#endif
;
}

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/* Copyright (c) 2007-2008 CSIRO
Copyright (c) 2007-2009 Xiph.Org Foundation
Copyright (c) 2008 Gregory Maxwell
Written by Jean-Marc Valin and Gregory Maxwell */
/**
@file celt.h
@brief Contains all the functions for encoding and decoding audio
*/
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef CELT_H
#define CELT_H
#include "opus_types.h"
#include "opus_defines.h"
#include "opus_custom.h"
#include "entenc.h"
#include "entdec.h"
#include "arch.h"
#ifdef __cplusplus
extern "C" {
#endif
#define CELTEncoder OpusCustomEncoder
#define CELTDecoder OpusCustomDecoder
#define CELTMode OpusCustomMode
typedef struct {
int valid;
float tonality;
float tonality_slope;
float noisiness;
float activity;
float music_prob;
int bandwidth;
}AnalysisInfo;
#define __celt_check_mode_ptr_ptr(ptr) ((ptr) + ((ptr) - (const CELTMode**)(ptr)))
#define __celt_check_analysis_ptr(ptr) ((ptr) + ((ptr) - (const AnalysisInfo*)(ptr)))
/* Encoder/decoder Requests */
/* Expose this option again when variable framesize actually works */
#define OPUS_FRAMESIZE_VARIABLE 5010 /**< Optimize the frame size dynamically */
#define CELT_SET_PREDICTION_REQUEST 10002
/** Controls the use of interframe prediction.
0=Independent frames
1=Short term interframe prediction allowed
2=Long term prediction allowed
*/
#define CELT_SET_PREDICTION(x) CELT_SET_PREDICTION_REQUEST, __opus_check_int(x)
#define CELT_SET_INPUT_CLIPPING_REQUEST 10004
#define CELT_SET_INPUT_CLIPPING(x) CELT_SET_INPUT_CLIPPING_REQUEST, __opus_check_int(x)
#define CELT_GET_AND_CLEAR_ERROR_REQUEST 10007
#define CELT_GET_AND_CLEAR_ERROR(x) CELT_GET_AND_CLEAR_ERROR_REQUEST, __opus_check_int_ptr(x)
#define CELT_SET_CHANNELS_REQUEST 10008
#define CELT_SET_CHANNELS(x) CELT_SET_CHANNELS_REQUEST, __opus_check_int(x)
/* Internal */
#define CELT_SET_START_BAND_REQUEST 10010
#define CELT_SET_START_BAND(x) CELT_SET_START_BAND_REQUEST, __opus_check_int(x)
#define CELT_SET_END_BAND_REQUEST 10012
#define CELT_SET_END_BAND(x) CELT_SET_END_BAND_REQUEST, __opus_check_int(x)
#define CELT_GET_MODE_REQUEST 10015
/** Get the CELTMode used by an encoder or decoder */
#define CELT_GET_MODE(x) CELT_GET_MODE_REQUEST, __celt_check_mode_ptr_ptr(x)
#define CELT_SET_SIGNALLING_REQUEST 10016
#define CELT_SET_SIGNALLING(x) CELT_SET_SIGNALLING_REQUEST, __opus_check_int(x)
#define CELT_SET_TONALITY_REQUEST 10018
#define CELT_SET_TONALITY(x) CELT_SET_TONALITY_REQUEST, __opus_check_int(x)
#define CELT_SET_TONALITY_SLOPE_REQUEST 10020
#define CELT_SET_TONALITY_SLOPE(x) CELT_SET_TONALITY_SLOPE_REQUEST, __opus_check_int(x)
#define CELT_SET_ANALYSIS_REQUEST 10022
#define CELT_SET_ANALYSIS(x) CELT_SET_ANALYSIS_REQUEST, __celt_check_analysis_ptr(x)
#define OPUS_SET_LFE_REQUEST 10024
#define OPUS_SET_LFE(x) OPUS_SET_LFE_REQUEST, __opus_check_int(x)
#define OPUS_SET_ENERGY_MASK_REQUEST 10026
#define OPUS_SET_ENERGY_MASK(x) OPUS_SET_ENERGY_MASK_REQUEST, __opus_check_val16_ptr(x)
/* Encoder stuff */
int celt_encoder_get_size(int channels);
int celt_encode_with_ec(OpusCustomEncoder * OPUS_RESTRICT st, const opus_val16 * pcm, int frame_size, unsigned char *compressed, int nbCompressedBytes, ec_enc *enc);
int celt_encoder_init(CELTEncoder *st, opus_int32 sampling_rate, int channels,
int arch);
/* Decoder stuff */
int celt_decoder_get_size(int channels);
int celt_decoder_init(CELTDecoder *st, opus_int32 sampling_rate, int channels);
int celt_decode_with_ec(OpusCustomDecoder * OPUS_RESTRICT st, const unsigned char *data, int len, opus_val16 * OPUS_RESTRICT pcm, int frame_size, ec_dec *dec);
#define celt_encoder_ctl opus_custom_encoder_ctl
#define celt_decoder_ctl opus_custom_decoder_ctl
#ifdef CUSTOM_MODES
#define OPUS_CUSTOM_NOSTATIC
#else
#define OPUS_CUSTOM_NOSTATIC static OPUS_INLINE
#endif
static const unsigned char trim_icdf[11] = {126, 124, 119, 109, 87, 41, 19, 9, 4, 2, 0};
/* Probs: NONE: 21.875%, LIGHT: 6.25%, NORMAL: 65.625%, AGGRESSIVE: 6.25% */
static const unsigned char spread_icdf[4] = {25, 23, 2, 0};
static const unsigned char tapset_icdf[3]={2,1,0};
#ifdef CUSTOM_MODES
static const unsigned char toOpusTable[20] = {
0xE0, 0xE8, 0xF0, 0xF8,
0xC0, 0xC8, 0xD0, 0xD8,
0xA0, 0xA8, 0xB0, 0xB8,
0x00, 0x00, 0x00, 0x00,
0x80, 0x88, 0x90, 0x98,
};
static const unsigned char fromOpusTable[16] = {
0x80, 0x88, 0x90, 0x98,
0x40, 0x48, 0x50, 0x58,
0x20, 0x28, 0x30, 0x38,
0x00, 0x08, 0x10, 0x18
};
static OPUS_INLINE int toOpus(unsigned char c)
{
int ret=0;
if (c<0xA0)
ret = toOpusTable[c>>3];
if (ret == 0)
return -1;
else
return ret|(c&0x7);
}
static OPUS_INLINE int fromOpus(unsigned char c)
{
if (c<0x80)
return -1;
else
return fromOpusTable[(c>>3)-16] | (c&0x7);
}
#endif /* CUSTOM_MODES */
#define COMBFILTER_MAXPERIOD 1024
#define COMBFILTER_MINPERIOD 15
extern const signed char tf_select_table[4][8];
int resampling_factor(opus_int32 rate);
void celt_preemphasis(const opus_val16 * OPUS_RESTRICT pcmp, celt_sig * OPUS_RESTRICT inp,
int N, int CC, int upsample, const opus_val16 *coef, celt_sig *mem, int clip);
void comb_filter(opus_val32 *y, opus_val32 *x, int T0, int T1, int N,
opus_val16 g0, opus_val16 g1, int tapset0, int tapset1,
const opus_val16 *window, int overlap);
void init_caps(const CELTMode *m,int *cap,int LM,int C);
#ifdef RESYNTH
void deemphasis(celt_sig *in[], opus_val16 *pcm, int N, int C, int downsample, const opus_val16 *coef, celt_sig *mem, celt_sig * OPUS_RESTRICT scratch);
void compute_inv_mdcts(const CELTMode *mode, int shortBlocks, celt_sig *X,
celt_sig * OPUS_RESTRICT out_mem[], int C, int LM);
#endif
#ifdef __cplusplus
}
#endif
#endif /* CELT_H */

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/* Copyright (c) 2009-2010 Xiph.Org Foundation
Written by Jean-Marc Valin */
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "celt_lpc.h"
#include "stack_alloc.h"
#include "mathops.h"
#include "pitch.h"
void _celt_lpc(
opus_val16 *_lpc, /* out: [0...p-1] LPC coefficients */
const opus_val32 *ac, /* in: [0...p] autocorrelation values */
int p
)
{
int i, j;
opus_val32 r;
opus_val32 error = ac[0];
#ifdef FIXED_POINT
opus_val32 lpc[LPC_ORDER];
#else
float *lpc = _lpc;
#endif
for (i = 0; i < p; i++)
lpc[i] = 0;
if (ac[0] != 0)
{
for (i = 0; i < p; i++) {
/* Sum up this iteration's reflection coefficient */
opus_val32 rr = 0;
for (j = 0; j < i; j++)
rr += MULT32_32_Q31(lpc[j],ac[i - j]);
rr += SHR32(ac[i + 1],3);
r = -frac_div32(SHL32(rr,3), error);
/* Update LPC coefficients and total error */
lpc[i] = SHR32(r,3);
for (j = 0; j < (i+1)>>1; j++)
{
opus_val32 tmp1, tmp2;
tmp1 = lpc[j];
tmp2 = lpc[i-1-j];
lpc[j] = tmp1 + MULT32_32_Q31(r,tmp2);
lpc[i-1-j] = tmp2 + MULT32_32_Q31(r,tmp1);
}
error = error - MULT32_32_Q31(MULT32_32_Q31(r,r),error);
/* Bail out once we get 30 dB gain */
#ifdef FIXED_POINT
if (error<SHR32(ac[0],10))
break;
#else
if (error<.001f*ac[0])
break;
#endif
}
}
#ifdef FIXED_POINT
for (i=0;i<p;i++)
_lpc[i] = ROUND16(lpc[i],16);
#endif
}
void celt_fir(const opus_val16 *_x,
const opus_val16 *num,
opus_val16 *_y,
int N,
int ord,
opus_val16 *mem)
{
int i,j;
VARDECL(opus_val16, rnum);
VARDECL(opus_val16, x);
SAVE_STACK;
ALLOC(rnum, ord, opus_val16);
ALLOC(x, N+ord, opus_val16);
for(i=0;i<ord;i++)
rnum[i] = num[ord-i-1];
for(i=0;i<ord;i++)
x[i] = mem[ord-i-1];
for (i=0;i<N;i++)
x[i+ord]=_x[i];
for(i=0;i<ord;i++)
mem[i] = _x[N-i-1];
#ifdef SMALL_FOOTPRINT
for (i=0;i<N;i++)
{
opus_val32 sum = SHL32(EXTEND32(_x[i]), SIG_SHIFT);
for (j=0;j<ord;j++)
{
sum = MAC16_16(sum,rnum[j],x[i+j]);
}
_y[i] = SATURATE16(PSHR32(sum, SIG_SHIFT));
}
#else
for (i=0;i<N-3;i+=4)
{
opus_val32 sum[4]={0,0,0,0};
xcorr_kernel(rnum, x+i, sum, ord);
_y[i ] = SATURATE16(ADD32(EXTEND32(_x[i ]), PSHR32(sum[0], SIG_SHIFT)));
_y[i+1] = SATURATE16(ADD32(EXTEND32(_x[i+1]), PSHR32(sum[1], SIG_SHIFT)));
_y[i+2] = SATURATE16(ADD32(EXTEND32(_x[i+2]), PSHR32(sum[2], SIG_SHIFT)));
_y[i+3] = SATURATE16(ADD32(EXTEND32(_x[i+3]), PSHR32(sum[3], SIG_SHIFT)));
}
for (;i<N;i++)
{
opus_val32 sum = 0;
for (j=0;j<ord;j++)
sum = MAC16_16(sum,rnum[j],x[i+j]);
_y[i] = SATURATE16(ADD32(EXTEND32(_x[i]), PSHR32(sum, SIG_SHIFT)));
}
#endif
RESTORE_STACK;
}
void celt_iir(const opus_val32 *_x,
const opus_val16 *den,
opus_val32 *_y,
int N,
int ord,
opus_val16 *mem)
{
#ifdef SMALL_FOOTPRINT
int i,j;
for (i=0;i<N;i++)
{
opus_val32 sum = _x[i];
for (j=0;j<ord;j++)
{
sum -= MULT16_16(den[j],mem[j]);
}
for (j=ord-1;j>=1;j--)
{
mem[j]=mem[j-1];
}
mem[0] = ROUND16(sum,SIG_SHIFT);
_y[i] = sum;
}
#else
int i,j;
VARDECL(opus_val16, rden);
VARDECL(opus_val16, y);
SAVE_STACK;
celt_assert((ord&3)==0);
ALLOC(rden, ord, opus_val16);
ALLOC(y, N+ord, opus_val16);
for(i=0;i<ord;i++)
rden[i] = den[ord-i-1];
for(i=0;i<ord;i++)
y[i] = -mem[ord-i-1];
for(;i<N+ord;i++)
y[i]=0;
for (i=0;i<N-3;i+=4)
{
/* Unroll by 4 as if it were an FIR filter */
opus_val32 sum[4];
sum[0]=_x[i];
sum[1]=_x[i+1];
sum[2]=_x[i+2];
sum[3]=_x[i+3];
xcorr_kernel(rden, y+i, sum, ord);
/* Patch up the result to compensate for the fact that this is an IIR */
y[i+ord ] = -ROUND16(sum[0],SIG_SHIFT);
_y[i ] = sum[0];
sum[1] = MAC16_16(sum[1], y[i+ord ], den[0]);
y[i+ord+1] = -ROUND16(sum[1],SIG_SHIFT);
_y[i+1] = sum[1];
sum[2] = MAC16_16(sum[2], y[i+ord+1], den[0]);
sum[2] = MAC16_16(sum[2], y[i+ord ], den[1]);
y[i+ord+2] = -ROUND16(sum[2],SIG_SHIFT);
_y[i+2] = sum[2];
sum[3] = MAC16_16(sum[3], y[i+ord+2], den[0]);
sum[3] = MAC16_16(sum[3], y[i+ord+1], den[1]);
sum[3] = MAC16_16(sum[3], y[i+ord ], den[2]);
y[i+ord+3] = -ROUND16(sum[3],SIG_SHIFT);
_y[i+3] = sum[3];
}
for (;i<N;i++)
{
opus_val32 sum = _x[i];
for (j=0;j<ord;j++)
sum -= MULT16_16(rden[j],y[i+j]);
y[i+ord] = ROUND16(sum,SIG_SHIFT);
_y[i] = sum;
}
for(i=0;i<ord;i++)
mem[i] = _y[N-i-1];
RESTORE_STACK;
#endif
}
int _celt_autocorr(
const opus_val16 *x, /* in: [0...n-1] samples x */
opus_val32 *ac, /* out: [0...lag-1] ac values */
const opus_val16 *window,
int overlap,
int lag,
int n,
int arch
)
{
opus_val32 d;
int i, k;
int fastN=n-lag;
int shift;
const opus_val16 *xptr;
VARDECL(opus_val16, xx);
SAVE_STACK;
ALLOC(xx, n, opus_val16);
celt_assert(n>0);
celt_assert(overlap>=0);
if (overlap == 0)
{
xptr = x;
} else {
for (i=0;i<n;i++)
xx[i] = x[i];
for (i=0;i<overlap;i++)
{
xx[i] = MULT16_16_Q15(x[i],window[i]);
xx[n-i-1] = MULT16_16_Q15(x[n-i-1],window[i]);
}
xptr = xx;
}
shift=0;
#ifdef FIXED_POINT
{
opus_val32 ac0;
ac0 = 1+(n<<7);
if (n&1) ac0 += SHR32(MULT16_16(xptr[0],xptr[0]),9);
for(i=(n&1);i<n;i+=2)
{
ac0 += SHR32(MULT16_16(xptr[i],xptr[i]),9);
ac0 += SHR32(MULT16_16(xptr[i+1],xptr[i+1]),9);
}
shift = celt_ilog2(ac0)-30+10;
shift = (shift)/2;
if (shift>0)
{
for(i=0;i<n;i++)
xx[i] = PSHR32(xptr[i], shift);
xptr = xx;
} else
shift = 0;
}
#endif
celt_pitch_xcorr(xptr, xptr, ac, fastN, lag+1, arch);
for (k=0;k<=lag;k++)
{
for (i = k+fastN, d = 0; i < n; i++)
d = MAC16_16(d, xptr[i], xptr[i-k]);
ac[k] += d;
}
#ifdef FIXED_POINT
shift = 2*shift;
if (shift<=0)
ac[0] += SHL32((opus_int32)1, -shift);
if (ac[0] < 268435456)
{
int shift2 = 29 - EC_ILOG(ac[0]);
for (i=0;i<=lag;i++)
ac[i] = SHL32(ac[i], shift2);
shift -= shift2;
} else if (ac[0] >= 536870912)
{
int shift2=1;
if (ac[0] >= 1073741824)
shift2++;
for (i=0;i<=lag;i++)
ac[i] = SHR32(ac[i], shift2);
shift += shift2;
}
#endif
RESTORE_STACK;
return shift;
}

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/* Copyright (c) 2009-2010 Xiph.Org Foundation
Written by Jean-Marc Valin */
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef PLC_H
#define PLC_H
#include "arch.h"
#define LPC_ORDER 24
void _celt_lpc(opus_val16 *_lpc, const opus_val32 *ac, int p);
void celt_fir(const opus_val16 *x,
const opus_val16 *num,
opus_val16 *y,
int N,
int ord,
opus_val16 *mem);
void celt_iir(const opus_val32 *x,
const opus_val16 *den,
opus_val32 *y,
int N,
int ord,
opus_val16 *mem);
int _celt_autocorr(const opus_val16 *x, opus_val32 *ac,
const opus_val16 *window, int overlap, int lag, int n, int arch);
#endif /* PLC_H */

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/* Copyright (c) 2010 Xiph.Org Foundation
* Copyright (c) 2013 Parrot */
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef CPU_SUPPORT_H
#define CPU_SUPPORT_H
#include "opus_types.h"
#include "opus_defines.h"
#if defined(OPUS_HAVE_RTCD) && defined(OPUS_ARM_ASM)
#include "arm/armcpu.h"
/* We currently support 4 ARM variants:
* arch[0] -> ARMv4
* arch[1] -> ARMv5E
* arch[2] -> ARMv6
* arch[3] -> NEON
*/
#define OPUS_ARCHMASK 3
#else
#define OPUS_ARCHMASK 0
static OPUS_INLINE int opus_select_arch(void)
{
return 0;
}
#endif
#endif

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/* Copyright (c) 2007-2008 CSIRO
Copyright (c) 2007-2009 Xiph.Org Foundation
Copyright (c) 2007-2009 Timothy B. Terriberry
Written by Timothy B. Terriberry and Jean-Marc Valin */
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "os_support.h"
#include "cwrs.h"
#include "mathops.h"
#include "arch.h"
#ifdef CUSTOM_MODES
/*Guaranteed to return a conservatively large estimate of the binary logarithm
with frac bits of fractional precision.
Tested for all possible 32-bit inputs with frac=4, where the maximum
overestimation is 0.06254243 bits.*/
int log2_frac(opus_uint32 val, int frac)
{
int l;
l=EC_ILOG(val);
if(val&(val-1)){
/*This is (val>>l-16), but guaranteed to round up, even if adding a bias
before the shift would cause overflow (e.g., for 0xFFFFxxxx).
Doesn't work for val=0, but that case fails the test above.*/
if(l>16)val=((val-1)>>(l-16))+1;
else val<<=16-l;
l=(l-1)<<frac;
/*Note that we always need one iteration, since the rounding up above means
that we might need to adjust the integer part of the logarithm.*/
do{
int b;
b=(int)(val>>16);
l+=b<<frac;
val=(val+b)>>b;
val=(val*val+0x7FFF)>>15;
}
while(frac-->0);
/*If val is not exactly 0x8000, then we have to round up the remainder.*/
return l+(val>0x8000);
}
/*Exact powers of two require no rounding.*/
else return (l-1)<<frac;
}
#endif
/*Although derived separately, the pulse vector coding scheme is equivalent to
a Pyramid Vector Quantizer \cite{Fis86}.
Some additional notes about an early version appear at
http://people.xiph.org/~tterribe/notes/cwrs.html, but the codebook ordering
and the definitions of some terms have evolved since that was written.
The conversion from a pulse vector to an integer index (encoding) and back
(decoding) is governed by two related functions, V(N,K) and U(N,K).
V(N,K) = the number of combinations, with replacement, of N items, taken K
at a time, when a sign bit is added to each item taken at least once (i.e.,
the number of N-dimensional unit pulse vectors with K pulses).
One way to compute this is via
V(N,K) = K>0 ? sum(k=1...K,2**k*choose(N,k)*choose(K-1,k-1)) : 1,
where choose() is the binomial function.
A table of values for N<10 and K<10 looks like:
V[10][10] = {
{1, 0, 0, 0, 0, 0, 0, 0, 0, 0},
{1, 2, 2, 2, 2, 2, 2, 2, 2, 2},
{1, 4, 8, 12, 16, 20, 24, 28, 32, 36},
{1, 6, 18, 38, 66, 102, 146, 198, 258, 326},
{1, 8, 32, 88, 192, 360, 608, 952, 1408, 1992},
{1, 10, 50, 170, 450, 1002, 1970, 3530, 5890, 9290},
{1, 12, 72, 292, 912, 2364, 5336, 10836, 20256, 35436},
{1, 14, 98, 462, 1666, 4942, 12642, 28814, 59906, 115598},
{1, 16, 128, 688, 2816, 9424, 27008, 68464, 157184, 332688},
{1, 18, 162, 978, 4482, 16722, 53154, 148626, 374274, 864146}
};
U(N,K) = the number of such combinations wherein N-1 objects are taken at
most K-1 at a time.
This is given by
U(N,K) = sum(k=0...K-1,V(N-1,k))
= K>0 ? (V(N-1,K-1) + V(N,K-1))/2 : 0.
The latter expression also makes clear that U(N,K) is half the number of such
combinations wherein the first object is taken at least once.
Although it may not be clear from either of these definitions, U(N,K) is the
natural function to work with when enumerating the pulse vector codebooks,
not V(N,K).
U(N,K) is not well-defined for N=0, but with the extension
U(0,K) = K>0 ? 0 : 1,
the function becomes symmetric: U(N,K) = U(K,N), with a similar table:
U[10][10] = {
{1, 0, 0, 0, 0, 0, 0, 0, 0, 0},
{0, 1, 1, 1, 1, 1, 1, 1, 1, 1},
{0, 1, 3, 5, 7, 9, 11, 13, 15, 17},
{0, 1, 5, 13, 25, 41, 61, 85, 113, 145},
{0, 1, 7, 25, 63, 129, 231, 377, 575, 833},
{0, 1, 9, 41, 129, 321, 681, 1289, 2241, 3649},
{0, 1, 11, 61, 231, 681, 1683, 3653, 7183, 13073},
{0, 1, 13, 85, 377, 1289, 3653, 8989, 19825, 40081},
{0, 1, 15, 113, 575, 2241, 7183, 19825, 48639, 108545},
{0, 1, 17, 145, 833, 3649, 13073, 40081, 108545, 265729}
};
With this extension, V(N,K) may be written in terms of U(N,K):
V(N,K) = U(N,K) + U(N,K+1)
for all N>=0, K>=0.
Thus U(N,K+1) represents the number of combinations where the first element
is positive or zero, and U(N,K) represents the number of combinations where
it is negative.
With a large enough table of U(N,K) values, we could write O(N) encoding
and O(min(N*log(K),N+K)) decoding routines, but such a table would be
prohibitively large for small embedded devices (K may be as large as 32767
for small N, and N may be as large as 200).
Both functions obey the same recurrence relation:
V(N,K) = V(N-1,K) + V(N,K-1) + V(N-1,K-1),
U(N,K) = U(N-1,K) + U(N,K-1) + U(N-1,K-1),
for all N>0, K>0, with different initial conditions at N=0 or K=0.
This allows us to construct a row of one of the tables above given the
previous row or the next row.
Thus we can derive O(NK) encoding and decoding routines with O(K) memory
using only addition and subtraction.
When encoding, we build up from the U(2,K) row and work our way forwards.
When decoding, we need to start at the U(N,K) row and work our way backwards,
which requires a means of computing U(N,K).
U(N,K) may be computed from two previous values with the same N:
U(N,K) = ((2*N-1)*U(N,K-1) - U(N,K-2))/(K-1) + U(N,K-2)
for all N>1, and since U(N,K) is symmetric, a similar relation holds for two
previous values with the same K:
U(N,K>1) = ((2*K-1)*U(N-1,K) - U(N-2,K))/(N-1) + U(N-2,K)
for all K>1.
This allows us to construct an arbitrary row of the U(N,K) table by starting
with the first two values, which are constants.
This saves roughly 2/3 the work in our O(NK) decoding routine, but costs O(K)
multiplications.
Similar relations can be derived for V(N,K), but are not used here.
For N>0 and K>0, U(N,K) and V(N,K) take on the form of an (N-1)-degree
polynomial for fixed N.
The first few are
U(1,K) = 1,
U(2,K) = 2*K-1,
U(3,K) = (2*K-2)*K+1,
U(4,K) = (((4*K-6)*K+8)*K-3)/3,
U(5,K) = ((((2*K-4)*K+10)*K-8)*K+3)/3,
and
V(1,K) = 2,
V(2,K) = 4*K,
V(3,K) = 4*K*K+2,
V(4,K) = 8*(K*K+2)*K/3,
V(5,K) = ((4*K*K+20)*K*K+6)/3,
for all K>0.
This allows us to derive O(N) encoding and O(N*log(K)) decoding routines for
small N (and indeed decoding is also O(N) for N<3).
@ARTICLE{Fis86,
author="Thomas R. Fischer",
title="A Pyramid Vector Quantizer",
journal="IEEE Transactions on Information Theory",
volume="IT-32",
number=4,
pages="568--583",
month=Jul,
year=1986
}*/
#if !defined(SMALL_FOOTPRINT)
/*U(N,K) = U(K,N) := N>0?K>0?U(N-1,K)+U(N,K-1)+U(N-1,K-1):0:K>0?1:0*/
# define CELT_PVQ_U(_n,_k) (CELT_PVQ_U_ROW[IMIN(_n,_k)][IMAX(_n,_k)])
/*V(N,K) := U(N,K)+U(N,K+1) = the number of PVQ codewords for a band of size N
with K pulses allocated to it.*/
# define CELT_PVQ_V(_n,_k) (CELT_PVQ_U(_n,_k)+CELT_PVQ_U(_n,(_k)+1))
/*For each V(N,K) supported, we will access element U(min(N,K+1),max(N,K+1)).
Thus, the number of entries in row I is the larger of the maximum number of
pulses we will ever allocate for a given N=I (K=128, or however many fit in
32 bits, whichever is smaller), plus one, and the maximum N for which
K=I-1 pulses fit in 32 bits.
The largest band size in an Opus Custom mode is 208.
Otherwise, we can limit things to the set of N which can be achieved by
splitting a band from a standard Opus mode: 176, 144, 96, 88, 72, 64, 48,
44, 36, 32, 24, 22, 18, 16, 8, 4, 2).*/
#if defined(CUSTOM_MODES)
static const opus_uint32 CELT_PVQ_U_DATA[1488]={
#else
static const opus_uint32 CELT_PVQ_U_DATA[1272]={
#endif
/*N=0, K=0...176:*/
1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
#if defined(CUSTOM_MODES)
/*...208:*/
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0,
#endif
/*N=1, K=1...176:*/
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
#if defined(CUSTOM_MODES)
/*...208:*/
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1,
#endif
/*N=2, K=2...176:*/
3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 37, 39, 41,
43, 45, 47, 49, 51, 53, 55, 57, 59, 61, 63, 65, 67, 69, 71, 73, 75, 77, 79,
81, 83, 85, 87, 89, 91, 93, 95, 97, 99, 101, 103, 105, 107, 109, 111, 113,
115, 117, 119, 121, 123, 125, 127, 129, 131, 133, 135, 137, 139, 141, 143,
145, 147, 149, 151, 153, 155, 157, 159, 161, 163, 165, 167, 169, 171, 173,
175, 177, 179, 181, 183, 185, 187, 189, 191, 193, 195, 197, 199, 201, 203,
205, 207, 209, 211, 213, 215, 217, 219, 221, 223, 225, 227, 229, 231, 233,
235, 237, 239, 241, 243, 245, 247, 249, 251, 253, 255, 257, 259, 261, 263,
265, 267, 269, 271, 273, 275, 277, 279, 281, 283, 285, 287, 289, 291, 293,
295, 297, 299, 301, 303, 305, 307, 309, 311, 313, 315, 317, 319, 321, 323,
325, 327, 329, 331, 333, 335, 337, 339, 341, 343, 345, 347, 349, 351,
#if defined(CUSTOM_MODES)
/*...208:*/
353, 355, 357, 359, 361, 363, 365, 367, 369, 371, 373, 375, 377, 379, 381,
383, 385, 387, 389, 391, 393, 395, 397, 399, 401, 403, 405, 407, 409, 411,
413, 415,
#endif
/*N=3, K=3...176:*/
13, 25, 41, 61, 85, 113, 145, 181, 221, 265, 313, 365, 421, 481, 545, 613,
685, 761, 841, 925, 1013, 1105, 1201, 1301, 1405, 1513, 1625, 1741, 1861,
1985, 2113, 2245, 2381, 2521, 2665, 2813, 2965, 3121, 3281, 3445, 3613, 3785,
3961, 4141, 4325, 4513, 4705, 4901, 5101, 5305, 5513, 5725, 5941, 6161, 6385,
6613, 6845, 7081, 7321, 7565, 7813, 8065, 8321, 8581, 8845, 9113, 9385, 9661,
9941, 10225, 10513, 10805, 11101, 11401, 11705, 12013, 12325, 12641, 12961,
13285, 13613, 13945, 14281, 14621, 14965, 15313, 15665, 16021, 16381, 16745,
17113, 17485, 17861, 18241, 18625, 19013, 19405, 19801, 20201, 20605, 21013,
21425, 21841, 22261, 22685, 23113, 23545, 23981, 24421, 24865, 25313, 25765,
26221, 26681, 27145, 27613, 28085, 28561, 29041, 29525, 30013, 30505, 31001,
31501, 32005, 32513, 33025, 33541, 34061, 34585, 35113, 35645, 36181, 36721,
37265, 37813, 38365, 38921, 39481, 40045, 40613, 41185, 41761, 42341, 42925,
43513, 44105, 44701, 45301, 45905, 46513, 47125, 47741, 48361, 48985, 49613,
50245, 50881, 51521, 52165, 52813, 53465, 54121, 54781, 55445, 56113, 56785,
57461, 58141, 58825, 59513, 60205, 60901, 61601,
#if defined(CUSTOM_MODES)
/*...208:*/
62305, 63013, 63725, 64441, 65161, 65885, 66613, 67345, 68081, 68821, 69565,
70313, 71065, 71821, 72581, 73345, 74113, 74885, 75661, 76441, 77225, 78013,
78805, 79601, 80401, 81205, 82013, 82825, 83641, 84461, 85285, 86113,
#endif
/*N=4, K=4...176:*/
63, 129, 231, 377, 575, 833, 1159, 1561, 2047, 2625, 3303, 4089, 4991, 6017,
7175, 8473, 9919, 11521, 13287, 15225, 17343, 19649, 22151, 24857, 27775,
30913, 34279, 37881, 41727, 45825, 50183, 54809, 59711, 64897, 70375, 76153,
82239, 88641, 95367, 102425, 109823, 117569, 125671, 134137, 142975, 152193,
161799, 171801, 182207, 193025, 204263, 215929, 228031, 240577, 253575,
267033, 280959, 295361, 310247, 325625, 341503, 357889, 374791, 392217,
410175, 428673, 447719, 467321, 487487, 508225, 529543, 551449, 573951,
597057, 620775, 645113, 670079, 695681, 721927, 748825, 776383, 804609,
833511, 863097, 893375, 924353, 956039, 988441, 1021567, 1055425, 1090023,
1125369, 1161471, 1198337, 1235975, 1274393, 1313599, 1353601, 1394407,
1436025, 1478463, 1521729, 1565831, 1610777, 1656575, 1703233, 1750759,
1799161, 1848447, 1898625, 1949703, 2001689, 2054591, 2108417, 2163175,
2218873, 2275519, 2333121, 2391687, 2451225, 2511743, 2573249, 2635751,
2699257, 2763775, 2829313, 2895879, 2963481, 3032127, 3101825, 3172583,
3244409, 3317311, 3391297, 3466375, 3542553, 3619839, 3698241, 3777767,
3858425, 3940223, 4023169, 4107271, 4192537, 4278975, 4366593, 4455399,
4545401, 4636607, 4729025, 4822663, 4917529, 5013631, 5110977, 5209575,
5309433, 5410559, 5512961, 5616647, 5721625, 5827903, 5935489, 6044391,
6154617, 6266175, 6379073, 6493319, 6608921, 6725887, 6844225, 6963943,
7085049, 7207551,
#if defined(CUSTOM_MODES)
/*...208:*/
7331457, 7456775, 7583513, 7711679, 7841281, 7972327, 8104825, 8238783,
8374209, 8511111, 8649497, 8789375, 8930753, 9073639, 9218041, 9363967,
9511425, 9660423, 9810969, 9963071, 10116737, 10271975, 10428793, 10587199,
10747201, 10908807, 11072025, 11236863, 11403329, 11571431, 11741177,
11912575,
#endif
/*N=5, K=5...176:*/
321, 681, 1289, 2241, 3649, 5641, 8361, 11969, 16641, 22569, 29961, 39041,
50049, 63241, 78889, 97281, 118721, 143529, 172041, 204609, 241601, 283401,
330409, 383041, 441729, 506921, 579081, 658689, 746241, 842249, 947241,
1061761, 1186369, 1321641, 1468169, 1626561, 1797441, 1981449, 2179241,
2391489, 2618881, 2862121, 3121929, 3399041, 3694209, 4008201, 4341801,
4695809, 5071041, 5468329, 5888521, 6332481, 6801089, 7295241, 7815849,
8363841, 8940161, 9545769, 10181641, 10848769, 11548161, 12280841, 13047849,
13850241, 14689089, 15565481, 16480521, 17435329, 18431041, 19468809,
20549801, 21675201, 22846209, 24064041, 25329929, 26645121, 28010881,
29428489, 30899241, 32424449, 34005441, 35643561, 37340169, 39096641,
40914369, 42794761, 44739241, 46749249, 48826241, 50971689, 53187081,
55473921, 57833729, 60268041, 62778409, 65366401, 68033601, 70781609,
73612041, 76526529, 79526721, 82614281, 85790889, 89058241, 92418049,
95872041, 99421961, 103069569, 106816641, 110664969, 114616361, 118672641,
122835649, 127107241, 131489289, 135983681, 140592321, 145317129, 150160041,
155123009, 160208001, 165417001, 170752009, 176215041, 181808129, 187533321,
193392681, 199388289, 205522241, 211796649, 218213641, 224775361, 231483969,
238341641, 245350569, 252512961, 259831041, 267307049, 274943241, 282741889,
290705281, 298835721, 307135529, 315607041, 324252609, 333074601, 342075401,
351257409, 360623041, 370174729, 379914921, 389846081, 399970689, 410291241,
420810249, 431530241, 442453761, 453583369, 464921641, 476471169, 488234561,
500214441, 512413449, 524834241, 537479489, 550351881, 563454121, 576788929,
590359041, 604167209, 618216201, 632508801,
#if defined(CUSTOM_MODES)
/*...208:*/
647047809, 661836041, 676876329, 692171521, 707724481, 723538089, 739615241,
755958849, 772571841, 789457161, 806617769, 824056641, 841776769, 859781161,
878072841, 896654849, 915530241, 934702089, 954173481, 973947521, 994027329,
1014416041, 1035116809, 1056132801, 1077467201, 1099123209, 1121104041,
1143412929, 1166053121, 1189027881, 1212340489, 1235994241,
#endif
/*N=6, K=6...96:*/
1683, 3653, 7183, 13073, 22363, 36365, 56695, 85305, 124515, 177045, 246047,
335137, 448427, 590557, 766727, 982729, 1244979, 1560549, 1937199, 2383409,
2908411, 3522221, 4235671, 5060441, 6009091, 7095093, 8332863, 9737793,
11326283, 13115773, 15124775, 17372905, 19880915, 22670725, 25765455,
29189457, 32968347, 37129037, 41699767, 46710137, 52191139, 58175189,
64696159, 71789409, 79491819, 87841821, 96879431, 106646281, 117185651,
128542501, 140763503, 153897073, 167993403, 183104493, 199284183, 216588185,
235074115, 254801525, 275831935, 298228865, 322057867, 347386557, 374284647,
402823977, 433078547, 465124549, 499040399, 534906769, 572806619, 612825229,
655050231, 699571641, 746481891, 795875861, 847850911, 902506913, 959946283,
1020274013, 1083597703, 1150027593, 1219676595, 1292660325, 1369097135,
1449108145, 1532817275, 1620351277, 1711839767, 1807415257, 1907213187,
2011371957, 2120032959,
#if defined(CUSTOM_MODES)
/*...109:*/
2233340609U, 2351442379U, 2474488829U, 2602633639U, 2736033641U, 2874848851U,
3019242501U, 3169381071U, 3325434321U, 3487575323U, 3655980493U, 3830829623U,
4012305913U,
#endif
/*N=7, K=7...54*/
8989, 19825, 40081, 75517, 134245, 227305, 369305, 579125, 880685, 1303777,
1884961, 2668525, 3707509, 5064793, 6814249, 9041957, 11847485, 15345233,
19665841, 24957661, 31388293, 39146185, 48442297, 59511829, 72616013,
88043969, 106114625, 127178701, 151620757, 179861305, 212358985, 249612805,
292164445, 340600625, 395555537, 457713341, 527810725, 606639529, 695049433,
793950709, 904317037, 1027188385, 1163673953, 1314955181, 1482288821,
1667010073, 1870535785, 2094367717,
#if defined(CUSTOM_MODES)
/*...60:*/
2340095869U, 2609401873U, 2904062449U, 3225952925U, 3577050821U, 3959439497U,
#endif
/*N=8, K=8...37*/
48639, 108545, 224143, 433905, 795455, 1392065, 2340495, 3800305, 5984767,
9173505, 13726991, 20103025, 28875327, 40754369, 56610575, 77500017,
104692735, 139703809, 184327311, 240673265, 311207743, 398796225, 506750351,
638878193, 799538175, 993696769, 1226990095, 1505789553, 1837271615,
2229491905U,
#if defined(CUSTOM_MODES)
/*...40:*/
2691463695U, 3233240945U, 3866006015U,
#endif
/*N=9, K=9...28:*/
265729, 598417, 1256465, 2485825, 4673345, 8405905, 14546705, 24331777,
39490049, 62390545, 96220561, 145198913, 214828609, 312193553, 446304145,
628496897, 872893441, 1196924561, 1621925137, 2173806145U,
#if defined(CUSTOM_MODES)
/*...29:*/
2883810113U,
#endif
/*N=10, K=10...24:*/
1462563, 3317445, 7059735, 14218905, 27298155, 50250765, 89129247, 152951073,
254831667, 413442773, 654862247, 1014889769, 1541911931, 2300409629U,
3375210671U,
/*N=11, K=11...19:*/
8097453, 18474633, 39753273, 81270333, 158819253, 298199265, 540279585,
948062325, 1616336765,
#if defined(CUSTOM_MODES)
/*...20:*/
2684641785U,
#endif
/*N=12, K=12...18:*/
45046719, 103274625, 224298231, 464387817, 921406335, 1759885185,
3248227095U,
/*N=13, K=13...16:*/
251595969, 579168825, 1267854873, 2653649025U,
/*N=14, K=14:*/
1409933619
};
#if defined(CUSTOM_MODES)
static const opus_uint32 *const CELT_PVQ_U_ROW[15]={
CELT_PVQ_U_DATA+ 0,CELT_PVQ_U_DATA+ 208,CELT_PVQ_U_DATA+ 415,
CELT_PVQ_U_DATA+ 621,CELT_PVQ_U_DATA+ 826,CELT_PVQ_U_DATA+1030,
CELT_PVQ_U_DATA+1233,CELT_PVQ_U_DATA+1336,CELT_PVQ_U_DATA+1389,
CELT_PVQ_U_DATA+1421,CELT_PVQ_U_DATA+1441,CELT_PVQ_U_DATA+1455,
CELT_PVQ_U_DATA+1464,CELT_PVQ_U_DATA+1470,CELT_PVQ_U_DATA+1473
};
#else
static const opus_uint32 *const CELT_PVQ_U_ROW[15]={
CELT_PVQ_U_DATA+ 0,CELT_PVQ_U_DATA+ 176,CELT_PVQ_U_DATA+ 351,
CELT_PVQ_U_DATA+ 525,CELT_PVQ_U_DATA+ 698,CELT_PVQ_U_DATA+ 870,
CELT_PVQ_U_DATA+1041,CELT_PVQ_U_DATA+1131,CELT_PVQ_U_DATA+1178,
CELT_PVQ_U_DATA+1207,CELT_PVQ_U_DATA+1226,CELT_PVQ_U_DATA+1240,
CELT_PVQ_U_DATA+1248,CELT_PVQ_U_DATA+1254,CELT_PVQ_U_DATA+1257
};
#endif
#if defined(CUSTOM_MODES)
void get_required_bits(opus_int16 *_bits,int _n,int _maxk,int _frac){
int k;
/*_maxk==0 => there's nothing to do.*/
celt_assert(_maxk>0);
_bits[0]=0;
for(k=1;k<=_maxk;k++)_bits[k]=log2_frac(CELT_PVQ_V(_n,k),_frac);
}
#endif
static opus_uint32 icwrs(int _n,const int *_y){
opus_uint32 i;
int j;
int k;
celt_assert(_n>=2);
j=_n-1;
i=_y[j]<0;
k=abs(_y[j]);
do{
j--;
i+=CELT_PVQ_U(_n-j,k);
k+=abs(_y[j]);
if(_y[j]<0)i+=CELT_PVQ_U(_n-j,k+1);
}
while(j>0);
return i;
}
void encode_pulses(const int *_y,int _n,int _k,ec_enc *_enc){
celt_assert(_k>0);
ec_enc_uint(_enc,icwrs(_n,_y),CELT_PVQ_V(_n,_k));
}
static void cwrsi(int _n,int _k,opus_uint32 _i,int *_y){
opus_uint32 p;
int s;
int k0;
celt_assert(_k>0);
celt_assert(_n>1);
while(_n>2){
opus_uint32 q;
/*Lots of pulses case:*/
if(_k>=_n){
const opus_uint32 *row;
row=CELT_PVQ_U_ROW[_n];
/*Are the pulses in this dimension negative?*/
p=row[_k+1];
s=-(_i>=p);
_i-=p&s;
/*Count how many pulses were placed in this dimension.*/
k0=_k;
q=row[_n];
if(q>_i){
celt_assert(p>q);
_k=_n;
do p=CELT_PVQ_U_ROW[--_k][_n];
while(p>_i);
}
else for(p=row[_k];p>_i;p=row[_k])_k--;
_i-=p;
*_y++=(k0-_k+s)^s;
}
/*Lots of dimensions case:*/
else{
/*Are there any pulses in this dimension at all?*/
p=CELT_PVQ_U_ROW[_k][_n];
q=CELT_PVQ_U_ROW[_k+1][_n];
if(p<=_i&&_i<q){
_i-=p;
*_y++=0;
}
else{
/*Are the pulses in this dimension negative?*/
s=-(_i>=q);
_i-=q&s;
/*Count how many pulses were placed in this dimension.*/
k0=_k;
do p=CELT_PVQ_U_ROW[--_k][_n];
while(p>_i);
_i-=p;
*_y++=(k0-_k+s)^s;
}
}
_n--;
}
/*_n==2*/
p=2*_k+1;
s=-(_i>=p);
_i-=p&s;
k0=_k;
_k=(_i+1)>>1;
if(_k)_i-=2*_k-1;
*_y++=(k0-_k+s)^s;
/*_n==1*/
s=-(int)_i;
*_y=(_k+s)^s;
}
void decode_pulses(int *_y,int _n,int _k,ec_dec *_dec){
cwrsi(_n,_k,ec_dec_uint(_dec,CELT_PVQ_V(_n,_k)),_y);
}
#else /* SMALL_FOOTPRINT */
/*Computes the next row/column of any recurrence that obeys the relation
u[i][j]=u[i-1][j]+u[i][j-1]+u[i-1][j-1].
_ui0 is the base case for the new row/column.*/
static OPUS_INLINE void unext(opus_uint32 *_ui,unsigned _len,opus_uint32 _ui0){
opus_uint32 ui1;
unsigned j;
/*This do-while will overrun the array if we don't have storage for at least
2 values.*/
j=1; do {
ui1=UADD32(UADD32(_ui[j],_ui[j-1]),_ui0);
_ui[j-1]=_ui0;
_ui0=ui1;
} while (++j<_len);
_ui[j-1]=_ui0;
}
/*Computes the previous row/column of any recurrence that obeys the relation
u[i-1][j]=u[i][j]-u[i][j-1]-u[i-1][j-1].
_ui0 is the base case for the new row/column.*/
static OPUS_INLINE void uprev(opus_uint32 *_ui,unsigned _n,opus_uint32 _ui0){
opus_uint32 ui1;
unsigned j;
/*This do-while will overrun the array if we don't have storage for at least
2 values.*/
j=1; do {
ui1=USUB32(USUB32(_ui[j],_ui[j-1]),_ui0);
_ui[j-1]=_ui0;
_ui0=ui1;
} while (++j<_n);
_ui[j-1]=_ui0;
}
/*Compute V(_n,_k), as well as U(_n,0..._k+1).
_u: On exit, _u[i] contains U(_n,i) for i in [0..._k+1].*/
static opus_uint32 ncwrs_urow(unsigned _n,unsigned _k,opus_uint32 *_u){
opus_uint32 um2;
unsigned len;
unsigned k;
len=_k+2;
/*We require storage at least 3 values (e.g., _k>0).*/
celt_assert(len>=3);
_u[0]=0;
_u[1]=um2=1;
/*If _n==0, _u[0] should be 1 and the rest should be 0.*/
/*If _n==1, _u[i] should be 1 for i>1.*/
celt_assert(_n>=2);
/*If _k==0, the following do-while loop will overflow the buffer.*/
celt_assert(_k>0);
k=2;
do _u[k]=(k<<1)-1;
while(++k<len);
for(k=2;k<_n;k++)unext(_u+1,_k+1,1);
return _u[_k]+_u[_k+1];
}
/*Returns the _i'th combination of _k elements chosen from a set of size _n
with associated sign bits.
_y: Returns the vector of pulses.
_u: Must contain entries [0..._k+1] of row _n of U() on input.
Its contents will be destructively modified.*/
static void cwrsi(int _n,int _k,opus_uint32 _i,int *_y,opus_uint32 *_u){
int j;
celt_assert(_n>0);
j=0;
do{
opus_uint32 p;
int s;
int yj;
p=_u[_k+1];
s=-(_i>=p);
_i-=p&s;
yj=_k;
p=_u[_k];
while(p>_i)p=_u[--_k];
_i-=p;
yj-=_k;
_y[j]=(yj+s)^s;
uprev(_u,_k+2,0);
}
while(++j<_n);
}
/*Returns the index of the given combination of K elements chosen from a set
of size 1 with associated sign bits.
_y: The vector of pulses, whose sum of absolute values is K.
_k: Returns K.*/
static OPUS_INLINE opus_uint32 icwrs1(const int *_y,int *_k){
*_k=abs(_y[0]);
return _y[0]<0;
}
/*Returns the index of the given combination of K elements chosen from a set
of size _n with associated sign bits.
_y: The vector of pulses, whose sum of absolute values must be _k.
_nc: Returns V(_n,_k).*/
static OPUS_INLINE opus_uint32 icwrs(int _n,int _k,opus_uint32 *_nc,const int *_y,
opus_uint32 *_u){
opus_uint32 i;
int j;
int k;
/*We can't unroll the first two iterations of the loop unless _n>=2.*/
celt_assert(_n>=2);
_u[0]=0;
for(k=1;k<=_k+1;k++)_u[k]=(k<<1)-1;
i=icwrs1(_y+_n-1,&k);
j=_n-2;
i+=_u[k];
k+=abs(_y[j]);
if(_y[j]<0)i+=_u[k+1];
while(j-->0){
unext(_u,_k+2,0);
i+=_u[k];
k+=abs(_y[j]);
if(_y[j]<0)i+=_u[k+1];
}
*_nc=_u[k]+_u[k+1];
return i;
}
#ifdef CUSTOM_MODES
void get_required_bits(opus_int16 *_bits,int _n,int _maxk,int _frac){
int k;
/*_maxk==0 => there's nothing to do.*/
celt_assert(_maxk>0);
_bits[0]=0;
if (_n==1)
{
for (k=1;k<=_maxk;k++)
_bits[k] = 1<<_frac;
}
else {
VARDECL(opus_uint32,u);
SAVE_STACK;
ALLOC(u,_maxk+2U,opus_uint32);
ncwrs_urow(_n,_maxk,u);
for(k=1;k<=_maxk;k++)
_bits[k]=log2_frac(u[k]+u[k+1],_frac);
RESTORE_STACK;
}
}
#endif /* CUSTOM_MODES */
void encode_pulses(const int *_y,int _n,int _k,ec_enc *_enc){
opus_uint32 i;
VARDECL(opus_uint32,u);
opus_uint32 nc;
SAVE_STACK;
celt_assert(_k>0);
ALLOC(u,_k+2U,opus_uint32);
i=icwrs(_n,_k,&nc,_y,u);
ec_enc_uint(_enc,i,nc);
RESTORE_STACK;
}
void decode_pulses(int *_y,int _n,int _k,ec_dec *_dec){
VARDECL(opus_uint32,u);
SAVE_STACK;
celt_assert(_k>0);
ALLOC(u,_k+2U,opus_uint32);
cwrsi(_n,_k,ec_dec_uint(_dec,ncwrs_urow(_n,_k,u)),_y,u);
RESTORE_STACK;
}
#endif /* SMALL_FOOTPRINT */

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/* Copyright (c) 2007-2008 CSIRO
Copyright (c) 2007-2009 Xiph.Org Foundation
Copyright (c) 2007-2009 Timothy B. Terriberry
Written by Timothy B. Terriberry and Jean-Marc Valin */
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef CWRS_H
#define CWRS_H
#include "arch.h"
#include "stack_alloc.h"
#include "entenc.h"
#include "entdec.h"
#ifdef CUSTOM_MODES
int log2_frac(opus_uint32 val, int frac);
#endif
void get_required_bits(opus_int16 *bits, int N, int K, int frac);
void encode_pulses(const int *_y, int N, int K, ec_enc *enc);
void decode_pulses(int *_y, int N, int K, ec_dec *dec);
#endif /* CWRS_H */

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/* Copyright (c) 2003-2008 Timothy B. Terriberry
Copyright (c) 2008 Xiph.Org Foundation */
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*Some common macros for potential platform-specific optimization.*/
#include "opus_types.h"
#include <math.h>
#include <limits.h>
#include "arch.h"
#if !defined(_ecintrin_H)
# define _ecintrin_H (1)
/*Some specific platforms may have optimized intrinsic or OPUS_INLINE assembly
versions of these functions which can substantially improve performance.
We define macros for them to allow easy incorporation of these non-ANSI
features.*/
/*Modern gcc (4.x) can compile the naive versions of min and max with cmov if
given an appropriate architecture, but the branchless bit-twiddling versions
are just as fast, and do not require any special target architecture.
Earlier gcc versions (3.x) compiled both code to the same assembly
instructions, because of the way they represented ((_b)>(_a)) internally.*/
# define EC_MINI(_a,_b) ((_a)+(((_b)-(_a))&-((_b)<(_a))))
/*Count leading zeros.
This macro should only be used for implementing ec_ilog(), if it is defined.
All other code should use EC_ILOG() instead.*/
#if defined(_MSC_VER) && (_MSC_VER >= 1400)
# include <intrin.h>
/*In _DEBUG mode this is not an intrinsic by default.*/
# pragma intrinsic(_BitScanReverse)
static __inline int ec_bsr(unsigned long _x){
unsigned long ret;
_BitScanReverse(&ret,_x);
return (int)ret;
}
# define EC_CLZ0 (1)
# define EC_CLZ(_x) (-ec_bsr(_x))
#elif defined(ENABLE_TI_DSPLIB)
# include "dsplib.h"
# define EC_CLZ0 (31)
# define EC_CLZ(_x) (_lnorm(_x))
#elif __GNUC_PREREQ(3,4)
# if INT_MAX>=2147483647
# define EC_CLZ0 ((int)sizeof(unsigned)*CHAR_BIT)
# define EC_CLZ(_x) (__builtin_clz(_x))
# elif LONG_MAX>=2147483647L
# define EC_CLZ0 ((int)sizeof(unsigned long)*CHAR_BIT)
# define EC_CLZ(_x) (__builtin_clzl(_x))
# endif
#endif
#if defined(EC_CLZ)
/*Note that __builtin_clz is not defined when _x==0, according to the gcc
documentation (and that of the BSR instruction that implements it on x86).
The majority of the time we can never pass it zero.
When we need to, it can be special cased.*/
# define EC_ILOG(_x) (EC_CLZ0-EC_CLZ(_x))
#else
int ec_ilog(opus_uint32 _v);
# define EC_ILOG(_x) (ec_ilog(_x))
#endif
#endif

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/* Copyright (c) 2001-2011 Timothy B. Terriberry
*/
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "entcode.h"
#include "arch.h"
#if !defined(EC_CLZ)
/*This is a fallback for systems where we don't know how to access
a BSR or CLZ instruction (see ecintrin.h).
If you are optimizing Opus on a new platform and it has a native CLZ or
BZR (e.g. cell, MIPS, x86, etc) then making it available to Opus will be
an easy performance win.*/
int ec_ilog(opus_uint32 _v){
/*On a Pentium M, this branchless version tested as the fastest on
1,000,000,000 random 32-bit integers, edging out a similar version with
branches, and a 256-entry LUT version.*/
int ret;
int m;
ret=!!_v;
m=!!(_v&0xFFFF0000)<<4;
_v>>=m;
ret|=m;
m=!!(_v&0xFF00)<<3;
_v>>=m;
ret|=m;
m=!!(_v&0xF0)<<2;
_v>>=m;
ret|=m;
m=!!(_v&0xC)<<1;
_v>>=m;
ret|=m;
ret+=!!(_v&0x2);
return ret;
}
#endif
opus_uint32 ec_tell_frac(ec_ctx *_this){
opus_uint32 nbits;
opus_uint32 r;
int l;
int i;
/*To handle the non-integral number of bits still left in the encoder/decoder
state, we compute the worst-case number of bits of val that must be
encoded to ensure that the value is inside the range for any possible
subsequent bits.
The computation here is independent of val itself (the decoder does not
even track that value), even though the real number of bits used after
ec_enc_done() may be 1 smaller if rng is a power of two and the
corresponding trailing bits of val are all zeros.
If we did try to track that special case, then coding a value with a
probability of 1/(1<<n) might sometimes appear to use more than n bits.
This may help explain the surprising result that a newly initialized
encoder or decoder claims to have used 1 bit.*/
nbits=_this->nbits_total<<BITRES;
l=EC_ILOG(_this->rng);
r=_this->rng>>(l-16);
for(i=BITRES;i-->0;){
int b;
r=r*r>>15;
b=(int)(r>>16);
l=l<<1|b;
r>>=b;
}
return nbits-l;
}

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/* Copyright (c) 2001-2011 Timothy B. Terriberry
Copyright (c) 2008-2009 Xiph.Org Foundation */
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "opus_types.h"
#include "opus_defines.h"
#if !defined(_entcode_H)
# define _entcode_H (1)
# include <limits.h>
# include <stddef.h>
# include "ecintrin.h"
/*OPT: ec_window must be at least 32 bits, but if you have fast arithmetic on a
larger type, you can speed up the decoder by using it here.*/
typedef opus_uint32 ec_window;
typedef struct ec_ctx ec_ctx;
typedef struct ec_ctx ec_enc;
typedef struct ec_ctx ec_dec;
# define EC_WINDOW_SIZE ((int)sizeof(ec_window)*CHAR_BIT)
/*The number of bits to use for the range-coded part of unsigned integers.*/
# define EC_UINT_BITS (8)
/*The resolution of fractional-precision bit usage measurements, i.e.,
3 => 1/8th bits.*/
# define BITRES 3
/*The entropy encoder/decoder context.
We use the same structure for both, so that common functions like ec_tell()
can be used on either one.*/
struct ec_ctx{
/*Buffered input/output.*/
unsigned char *buf;
/*The size of the buffer.*/
opus_uint32 storage;
/*The offset at which the last byte containing raw bits was read/written.*/
opus_uint32 end_offs;
/*Bits that will be read from/written at the end.*/
ec_window end_window;
/*Number of valid bits in end_window.*/
int nend_bits;
/*The total number of whole bits read/written.
This does not include partial bits currently in the range coder.*/
int nbits_total;
/*The offset at which the next range coder byte will be read/written.*/
opus_uint32 offs;
/*The number of values in the current range.*/
opus_uint32 rng;
/*In the decoder: the difference between the top of the current range and
the input value, minus one.
In the encoder: the low end of the current range.*/
opus_uint32 val;
/*In the decoder: the saved normalization factor from ec_decode().
In the encoder: the number of oustanding carry propagating symbols.*/
opus_uint32 ext;
/*A buffered input/output symbol, awaiting carry propagation.*/
int rem;
/*Nonzero if an error occurred.*/
int error;
};
static OPUS_INLINE opus_uint32 ec_range_bytes(ec_ctx *_this){
return _this->offs;
}
static OPUS_INLINE unsigned char *ec_get_buffer(ec_ctx *_this){
return _this->buf;
}
static OPUS_INLINE int ec_get_error(ec_ctx *_this){
return _this->error;
}
/*Returns the number of bits "used" by the encoded or decoded symbols so far.
This same number can be computed in either the encoder or the decoder, and is
suitable for making coding decisions.
Return: The number of bits.
This will always be slightly larger than the exact value (e.g., all
rounding error is in the positive direction).*/
static OPUS_INLINE int ec_tell(ec_ctx *_this){
return _this->nbits_total-EC_ILOG(_this->rng);
}
/*Returns the number of bits "used" by the encoded or decoded symbols so far.
This same number can be computed in either the encoder or the decoder, and is
suitable for making coding decisions.
Return: The number of bits scaled by 2**BITRES.
This will always be slightly larger than the exact value (e.g., all
rounding error is in the positive direction).*/
opus_uint32 ec_tell_frac(ec_ctx *_this);
#endif

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/* Copyright (c) 2001-2011 Timothy B. Terriberry
Copyright (c) 2008-2009 Xiph.Org Foundation */
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stddef.h>
#include "os_support.h"
#include "arch.h"
#include "entdec.h"
#include "mfrngcod.h"
/*A range decoder.
This is an entropy decoder based upon \cite{Mar79}, which is itself a
rediscovery of the FIFO arithmetic code introduced by \cite{Pas76}.
It is very similar to arithmetic encoding, except that encoding is done with
digits in any base, instead of with bits, and so it is faster when using
larger bases (i.e.: a byte).
The author claims an average waste of $\frac{1}{2}\log_b(2b)$ bits, where $b$
is the base, longer than the theoretical optimum, but to my knowledge there
is no published justification for this claim.
This only seems true when using near-infinite precision arithmetic so that
the process is carried out with no rounding errors.
An excellent description of implementation details is available at
http://www.arturocampos.com/ac_range.html
A recent work \cite{MNW98} which proposes several changes to arithmetic
encoding for efficiency actually re-discovers many of the principles
behind range encoding, and presents a good theoretical analysis of them.
End of stream is handled by writing out the smallest number of bits that
ensures that the stream will be correctly decoded regardless of the value of
any subsequent bits.
ec_tell() can be used to determine how many bits were needed to decode
all the symbols thus far; other data can be packed in the remaining bits of
the input buffer.
@PHDTHESIS{Pas76,
author="Richard Clark Pasco",
title="Source coding algorithms for fast data compression",
school="Dept. of Electrical Engineering, Stanford University",
address="Stanford, CA",
month=May,
year=1976
}
@INPROCEEDINGS{Mar79,
author="Martin, G.N.N.",
title="Range encoding: an algorithm for removing redundancy from a digitised
message",
booktitle="Video & Data Recording Conference",
year=1979,
address="Southampton",
month=Jul
}
@ARTICLE{MNW98,
author="Alistair Moffat and Radford Neal and Ian H. Witten",
title="Arithmetic Coding Revisited",
journal="{ACM} Transactions on Information Systems",
year=1998,
volume=16,
number=3,
pages="256--294",
month=Jul,
URL="http://www.stanford.edu/class/ee398a/handouts/papers/Moffat98ArithmCoding.pdf"
}*/
static int ec_read_byte(ec_dec *_this){
return _this->offs<_this->storage?_this->buf[_this->offs++]:0;
}
static int ec_read_byte_from_end(ec_dec *_this){
return _this->end_offs<_this->storage?
_this->buf[_this->storage-++(_this->end_offs)]:0;
}
/*Normalizes the contents of val and rng so that rng lies entirely in the
high-order symbol.*/
static void ec_dec_normalize(ec_dec *_this){
/*If the range is too small, rescale it and input some bits.*/
while(_this->rng<=EC_CODE_BOT){
int sym;
_this->nbits_total+=EC_SYM_BITS;
_this->rng<<=EC_SYM_BITS;
/*Use up the remaining bits from our last symbol.*/
sym=_this->rem;
/*Read the next value from the input.*/
_this->rem=ec_read_byte(_this);
/*Take the rest of the bits we need from this new symbol.*/
sym=(sym<<EC_SYM_BITS|_this->rem)>>(EC_SYM_BITS-EC_CODE_EXTRA);
/*And subtract them from val, capped to be less than EC_CODE_TOP.*/
_this->val=((_this->val<<EC_SYM_BITS)+(EC_SYM_MAX&~sym))&(EC_CODE_TOP-1);
}
}
void ec_dec_init(ec_dec *_this,unsigned char *_buf,opus_uint32 _storage){
_this->buf=_buf;
_this->storage=_storage;
_this->end_offs=0;
_this->end_window=0;
_this->nend_bits=0;
/*This is the offset from which ec_tell() will subtract partial bits.
The final value after the ec_dec_normalize() call will be the same as in
the encoder, but we have to compensate for the bits that are added there.*/
_this->nbits_total=EC_CODE_BITS+1
-((EC_CODE_BITS-EC_CODE_EXTRA)/EC_SYM_BITS)*EC_SYM_BITS;
_this->offs=0;
_this->rng=1U<<EC_CODE_EXTRA;
_this->rem=ec_read_byte(_this);
_this->val=_this->rng-1-(_this->rem>>(EC_SYM_BITS-EC_CODE_EXTRA));
_this->error=0;
/*Normalize the interval.*/
ec_dec_normalize(_this);
}
unsigned ec_decode(ec_dec *_this,unsigned _ft){
unsigned s;
_this->ext=_this->rng/_ft;
s=(unsigned)(_this->val/_this->ext);
return _ft-EC_MINI(s+1,_ft);
}
unsigned ec_decode_bin(ec_dec *_this,unsigned _bits){
unsigned s;
_this->ext=_this->rng>>_bits;
s=(unsigned)(_this->val/_this->ext);
return (1U<<_bits)-EC_MINI(s+1U,1U<<_bits);
}
void ec_dec_update(ec_dec *_this,unsigned _fl,unsigned _fh,unsigned _ft){
opus_uint32 s;
s=IMUL32(_this->ext,_ft-_fh);
_this->val-=s;
_this->rng=_fl>0?IMUL32(_this->ext,_fh-_fl):_this->rng-s;
ec_dec_normalize(_this);
}
/*The probability of having a "one" is 1/(1<<_logp).*/
int ec_dec_bit_logp(ec_dec *_this,unsigned _logp){
opus_uint32 r;
opus_uint32 d;
opus_uint32 s;
int ret;
r=_this->rng;
d=_this->val;
s=r>>_logp;
ret=d<s;
if(!ret)_this->val=d-s;
_this->rng=ret?s:r-s;
ec_dec_normalize(_this);
return ret;
}
int ec_dec_icdf(ec_dec *_this,const unsigned char *_icdf,unsigned _ftb){
opus_uint32 r;
opus_uint32 d;
opus_uint32 s;
opus_uint32 t;
int ret;
s=_this->rng;
d=_this->val;
r=s>>_ftb;
ret=-1;
do{
t=s;
s=IMUL32(r,_icdf[++ret]);
}
while(d<s);
_this->val=d-s;
_this->rng=t-s;
ec_dec_normalize(_this);
return ret;
}
opus_uint32 ec_dec_uint(ec_dec *_this,opus_uint32 _ft){
unsigned ft;
unsigned s;
int ftb;
/*In order to optimize EC_ILOG(), it is undefined for the value 0.*/
celt_assert(_ft>1);
_ft--;
ftb=EC_ILOG(_ft);
if(ftb>EC_UINT_BITS){
opus_uint32 t;
ftb-=EC_UINT_BITS;
ft=(unsigned)(_ft>>ftb)+1;
s=ec_decode(_this,ft);
ec_dec_update(_this,s,s+1,ft);
t=(opus_uint32)s<<ftb|ec_dec_bits(_this,ftb);
if(t<=_ft)return t;
_this->error=1;
return _ft;
}
else{
_ft++;
s=ec_decode(_this,(unsigned)_ft);
ec_dec_update(_this,s,s+1,(unsigned)_ft);
return s;
}
}
opus_uint32 ec_dec_bits(ec_dec *_this,unsigned _bits){
ec_window window;
int available;
opus_uint32 ret;
window=_this->end_window;
available=_this->nend_bits;
if((unsigned)available<_bits){
do{
window|=(ec_window)ec_read_byte_from_end(_this)<<available;
available+=EC_SYM_BITS;
}
while(available<=EC_WINDOW_SIZE-EC_SYM_BITS);
}
ret=(opus_uint32)window&(((opus_uint32)1<<_bits)-1U);
window>>=_bits;
available-=_bits;
_this->end_window=window;
_this->nend_bits=available;
_this->nbits_total+=_bits;
return ret;
}

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/* Copyright (c) 2001-2011 Timothy B. Terriberry
Copyright (c) 2008-2009 Xiph.Org Foundation */
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#if !defined(_entdec_H)
# define _entdec_H (1)
# include <limits.h>
# include "entcode.h"
/*Initializes the decoder.
_buf: The input buffer to use.
Return: 0 on success, or a negative value on error.*/
void ec_dec_init(ec_dec *_this,unsigned char *_buf,opus_uint32 _storage);
/*Calculates the cumulative frequency for the next symbol.
This can then be fed into the probability model to determine what that
symbol is, and the additional frequency information required to advance to
the next symbol.
This function cannot be called more than once without a corresponding call to
ec_dec_update(), or decoding will not proceed correctly.
_ft: The total frequency of the symbols in the alphabet the next symbol was
encoded with.
Return: A cumulative frequency representing the encoded symbol.
If the cumulative frequency of all the symbols before the one that
was encoded was fl, and the cumulative frequency of all the symbols
up to and including the one encoded is fh, then the returned value
will fall in the range [fl,fh).*/
unsigned ec_decode(ec_dec *_this,unsigned _ft);
/*Equivalent to ec_decode() with _ft==1<<_bits.*/
unsigned ec_decode_bin(ec_dec *_this,unsigned _bits);
/*Advance the decoder past the next symbol using the frequency information the
symbol was encoded with.
Exactly one call to ec_decode() must have been made so that all necessary
intermediate calculations are performed.
_fl: The cumulative frequency of all symbols that come before the symbol
decoded.
_fh: The cumulative frequency of all symbols up to and including the symbol
decoded.
Together with _fl, this defines the range [_fl,_fh) in which the value
returned above must fall.
_ft: The total frequency of the symbols in the alphabet the symbol decoded
was encoded in.
This must be the same as passed to the preceding call to ec_decode().*/
void ec_dec_update(ec_dec *_this,unsigned _fl,unsigned _fh,unsigned _ft);
/* Decode a bit that has a 1/(1<<_logp) probability of being a one */
int ec_dec_bit_logp(ec_dec *_this,unsigned _logp);
/*Decodes a symbol given an "inverse" CDF table.
No call to ec_dec_update() is necessary after this call.
_icdf: The "inverse" CDF, such that symbol s falls in the range
[s>0?ft-_icdf[s-1]:0,ft-_icdf[s]), where ft=1<<_ftb.
The values must be monotonically non-increasing, and the last value
must be 0.
_ftb: The number of bits of precision in the cumulative distribution.
Return: The decoded symbol s.*/
int ec_dec_icdf(ec_dec *_this,const unsigned char *_icdf,unsigned _ftb);
/*Extracts a raw unsigned integer with a non-power-of-2 range from the stream.
The bits must have been encoded with ec_enc_uint().
No call to ec_dec_update() is necessary after this call.
_ft: The number of integers that can be decoded (one more than the max).
This must be at least one, and no more than 2**32-1.
Return: The decoded bits.*/
opus_uint32 ec_dec_uint(ec_dec *_this,opus_uint32 _ft);
/*Extracts a sequence of raw bits from the stream.
The bits must have been encoded with ec_enc_bits().
No call to ec_dec_update() is necessary after this call.
_ftb: The number of bits to extract.
This must be between 0 and 25, inclusive.
Return: The decoded bits.*/
opus_uint32 ec_dec_bits(ec_dec *_this,unsigned _ftb);
#endif

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/* Copyright (c) 2001-2011 Timothy B. Terriberry
Copyright (c) 2008-2009 Xiph.Org Foundation */
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#if defined(HAVE_CONFIG_H)
# include "config.h"
#endif
#include "os_support.h"
#include "arch.h"
#include "entenc.h"
#include "mfrngcod.h"
/*A range encoder.
See entdec.c and the references for implementation details \cite{Mar79,MNW98}.
@INPROCEEDINGS{Mar79,
author="Martin, G.N.N.",
title="Range encoding: an algorithm for removing redundancy from a digitised
message",
booktitle="Video \& Data Recording Conference",
year=1979,
address="Southampton",
month=Jul
}
@ARTICLE{MNW98,
author="Alistair Moffat and Radford Neal and Ian H. Witten",
title="Arithmetic Coding Revisited",
journal="{ACM} Transactions on Information Systems",
year=1998,
volume=16,
number=3,
pages="256--294",
month=Jul,
URL="http://www.stanford.edu/class/ee398/handouts/papers/Moffat98ArithmCoding.pdf"
}*/
static int ec_write_byte(ec_enc *_this,unsigned _value){
if(_this->offs+_this->end_offs>=_this->storage)return -1;
_this->buf[_this->offs++]=(unsigned char)_value;
return 0;
}
static int ec_write_byte_at_end(ec_enc *_this,unsigned _value){
if(_this->offs+_this->end_offs>=_this->storage)return -1;
_this->buf[_this->storage-++(_this->end_offs)]=(unsigned char)_value;
return 0;
}
/*Outputs a symbol, with a carry bit.
If there is a potential to propagate a carry over several symbols, they are
buffered until it can be determined whether or not an actual carry will
occur.
If the counter for the buffered symbols overflows, then the stream becomes
undecodable.
This gives a theoretical limit of a few billion symbols in a single packet on
32-bit systems.
The alternative is to truncate the range in order to force a carry, but
requires similar carry tracking in the decoder, needlessly slowing it down.*/
static void ec_enc_carry_out(ec_enc *_this,int _c){
if(_c!=EC_SYM_MAX){
/*No further carry propagation possible, flush buffer.*/
int carry;
carry=_c>>EC_SYM_BITS;
/*Don't output a byte on the first write.
This compare should be taken care of by branch-prediction thereafter.*/
if(_this->rem>=0)_this->error|=ec_write_byte(_this,_this->rem+carry);
if(_this->ext>0){
unsigned sym;
sym=(EC_SYM_MAX+carry)&EC_SYM_MAX;
do _this->error|=ec_write_byte(_this,sym);
while(--(_this->ext)>0);
}
_this->rem=_c&EC_SYM_MAX;
}
else _this->ext++;
}
static void ec_enc_normalize(ec_enc *_this){
/*If the range is too small, output some bits and rescale it.*/
while(_this->rng<=EC_CODE_BOT){
ec_enc_carry_out(_this,(int)(_this->val>>EC_CODE_SHIFT));
/*Move the next-to-high-order symbol into the high-order position.*/
_this->val=(_this->val<<EC_SYM_BITS)&(EC_CODE_TOP-1);
_this->rng<<=EC_SYM_BITS;
_this->nbits_total+=EC_SYM_BITS;
}
}
void ec_enc_init(ec_enc *_this,unsigned char *_buf,opus_uint32 _size){
_this->buf=_buf;
_this->end_offs=0;
_this->end_window=0;
_this->nend_bits=0;
/*This is the offset from which ec_tell() will subtract partial bits.*/
_this->nbits_total=EC_CODE_BITS+1;
_this->offs=0;
_this->rng=EC_CODE_TOP;
_this->rem=-1;
_this->val=0;
_this->ext=0;
_this->storage=_size;
_this->error=0;
}
void ec_encode(ec_enc *_this,unsigned _fl,unsigned _fh,unsigned _ft){
opus_uint32 r;
r=_this->rng/_ft;
if(_fl>0){
_this->val+=_this->rng-IMUL32(r,(_ft-_fl));
_this->rng=IMUL32(r,(_fh-_fl));
}
else _this->rng-=IMUL32(r,(_ft-_fh));
ec_enc_normalize(_this);
}
void ec_encode_bin(ec_enc *_this,unsigned _fl,unsigned _fh,unsigned _bits){
opus_uint32 r;
r=_this->rng>>_bits;
if(_fl>0){
_this->val+=_this->rng-IMUL32(r,((1U<<_bits)-_fl));
_this->rng=IMUL32(r,(_fh-_fl));
}
else _this->rng-=IMUL32(r,((1U<<_bits)-_fh));
ec_enc_normalize(_this);
}
/*The probability of having a "one" is 1/(1<<_logp).*/
void ec_enc_bit_logp(ec_enc *_this,int _val,unsigned _logp){
opus_uint32 r;
opus_uint32 s;
opus_uint32 l;
r=_this->rng;
l=_this->val;
s=r>>_logp;
r-=s;
if(_val)_this->val=l+r;
_this->rng=_val?s:r;
ec_enc_normalize(_this);
}
void ec_enc_icdf(ec_enc *_this,int _s,const unsigned char *_icdf,unsigned _ftb){
opus_uint32 r;
r=_this->rng>>_ftb;
if(_s>0){
_this->val+=_this->rng-IMUL32(r,_icdf[_s-1]);
_this->rng=IMUL32(r,_icdf[_s-1]-_icdf[_s]);
}
else _this->rng-=IMUL32(r,_icdf[_s]);
ec_enc_normalize(_this);
}
void ec_enc_uint(ec_enc *_this,opus_uint32 _fl,opus_uint32 _ft){
unsigned ft;
unsigned fl;
int ftb;
/*In order to optimize EC_ILOG(), it is undefined for the value 0.*/
celt_assert(_ft>1);
_ft--;
ftb=EC_ILOG(_ft);
if(ftb>EC_UINT_BITS){
ftb-=EC_UINT_BITS;
ft=(_ft>>ftb)+1;
fl=(unsigned)(_fl>>ftb);
ec_encode(_this,fl,fl+1,ft);
ec_enc_bits(_this,_fl&(((opus_uint32)1<<ftb)-1U),ftb);
}
else ec_encode(_this,_fl,_fl+1,_ft+1);
}
void ec_enc_bits(ec_enc *_this,opus_uint32 _fl,unsigned _bits){
ec_window window;
int used;
window=_this->end_window;
used=_this->nend_bits;
celt_assert(_bits>0);
if(used+_bits>EC_WINDOW_SIZE){
do{
_this->error|=ec_write_byte_at_end(_this,(unsigned)window&EC_SYM_MAX);
window>>=EC_SYM_BITS;
used-=EC_SYM_BITS;
}
while(used>=EC_SYM_BITS);
}
window|=(ec_window)_fl<<used;
used+=_bits;
_this->end_window=window;
_this->nend_bits=used;
_this->nbits_total+=_bits;
}
void ec_enc_patch_initial_bits(ec_enc *_this,unsigned _val,unsigned _nbits){
int shift;
unsigned mask;
celt_assert(_nbits<=EC_SYM_BITS);
shift=EC_SYM_BITS-_nbits;
mask=((1<<_nbits)-1)<<shift;
if(_this->offs>0){
/*The first byte has been finalized.*/
_this->buf[0]=(unsigned char)((_this->buf[0]&~mask)|_val<<shift);
}
else if(_this->rem>=0){
/*The first byte is still awaiting carry propagation.*/
_this->rem=(_this->rem&~mask)|_val<<shift;
}
else if(_this->rng<=(EC_CODE_TOP>>_nbits)){
/*The renormalization loop has never been run.*/
_this->val=(_this->val&~((opus_uint32)mask<<EC_CODE_SHIFT))|
(opus_uint32)_val<<(EC_CODE_SHIFT+shift);
}
/*The encoder hasn't even encoded _nbits of data yet.*/
else _this->error=-1;
}
void ec_enc_shrink(ec_enc *_this,opus_uint32 _size){
celt_assert(_this->offs+_this->end_offs<=_size);
OPUS_MOVE(_this->buf+_size-_this->end_offs,
_this->buf+_this->storage-_this->end_offs,_this->end_offs);
_this->storage=_size;
}
void ec_enc_done(ec_enc *_this){
ec_window window;
int used;
opus_uint32 msk;
opus_uint32 end;
int l;
/*We output the minimum number of bits that ensures that the symbols encoded
thus far will be decoded correctly regardless of the bits that follow.*/
l=EC_CODE_BITS-EC_ILOG(_this->rng);
msk=(EC_CODE_TOP-1)>>l;
end=(_this->val+msk)&~msk;
if((end|msk)>=_this->val+_this->rng){
l++;
msk>>=1;
end=(_this->val+msk)&~msk;
}
while(l>0){
ec_enc_carry_out(_this,(int)(end>>EC_CODE_SHIFT));
end=(end<<EC_SYM_BITS)&(EC_CODE_TOP-1);
l-=EC_SYM_BITS;
}
/*If we have a buffered byte flush it into the output buffer.*/
if(_this->rem>=0||_this->ext>0)ec_enc_carry_out(_this,0);
/*If we have buffered extra bits, flush them as well.*/
window=_this->end_window;
used=_this->nend_bits;
while(used>=EC_SYM_BITS){
_this->error|=ec_write_byte_at_end(_this,(unsigned)window&EC_SYM_MAX);
window>>=EC_SYM_BITS;
used-=EC_SYM_BITS;
}
/*Clear any excess space and add any remaining extra bits to the last byte.*/
if(!_this->error){
OPUS_CLEAR(_this->buf+_this->offs,
_this->storage-_this->offs-_this->end_offs);
if(used>0){
/*If there's no range coder data at all, give up.*/
if(_this->end_offs>=_this->storage)_this->error=-1;
else{
l=-l;
/*If we've busted, don't add too many extra bits to the last byte; it
would corrupt the range coder data, and that's more important.*/
if(_this->offs+_this->end_offs>=_this->storage&&l<used){
window&=(1<<l)-1;
_this->error=-1;
}
_this->buf[_this->storage-_this->end_offs-1]|=(unsigned char)window;
}
}
}
}

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/* Copyright (c) 2001-2011 Timothy B. Terriberry
Copyright (c) 2008-2009 Xiph.Org Foundation */
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#if !defined(_entenc_H)
# define _entenc_H (1)
# include <stddef.h>
# include "entcode.h"
/*Initializes the encoder.
_buf: The buffer to store output bytes in.
_size: The size of the buffer, in chars.*/
void ec_enc_init(ec_enc *_this,unsigned char *_buf,opus_uint32 _size);
/*Encodes a symbol given its frequency information.
The frequency information must be discernable by the decoder, assuming it
has read only the previous symbols from the stream.
It is allowable to change the frequency information, or even the entire
source alphabet, so long as the decoder can tell from the context of the
previously encoded information that it is supposed to do so as well.
_fl: The cumulative frequency of all symbols that come before the one to be
encoded.
_fh: The cumulative frequency of all symbols up to and including the one to
be encoded.
Together with _fl, this defines the range [_fl,_fh) in which the
decoded value will fall.
_ft: The sum of the frequencies of all the symbols*/
void ec_encode(ec_enc *_this,unsigned _fl,unsigned _fh,unsigned _ft);
/*Equivalent to ec_encode() with _ft==1<<_bits.*/
void ec_encode_bin(ec_enc *_this,unsigned _fl,unsigned _fh,unsigned _bits);
/* Encode a bit that has a 1/(1<<_logp) probability of being a one */
void ec_enc_bit_logp(ec_enc *_this,int _val,unsigned _logp);
/*Encodes a symbol given an "inverse" CDF table.
_s: The index of the symbol to encode.
_icdf: The "inverse" CDF, such that symbol _s falls in the range
[_s>0?ft-_icdf[_s-1]:0,ft-_icdf[_s]), where ft=1<<_ftb.
The values must be monotonically non-increasing, and the last value
must be 0.
_ftb: The number of bits of precision in the cumulative distribution.*/
void ec_enc_icdf(ec_enc *_this,int _s,const unsigned char *_icdf,unsigned _ftb);
/*Encodes a raw unsigned integer in the stream.
_fl: The integer to encode.
_ft: The number of integers that can be encoded (one more than the max).
This must be at least one, and no more than 2**32-1.*/
void ec_enc_uint(ec_enc *_this,opus_uint32 _fl,opus_uint32 _ft);
/*Encodes a sequence of raw bits in the stream.
_fl: The bits to encode.
_ftb: The number of bits to encode.
This must be between 1 and 25, inclusive.*/
void ec_enc_bits(ec_enc *_this,opus_uint32 _fl,unsigned _ftb);
/*Overwrites a few bits at the very start of an existing stream, after they
have already been encoded.
This makes it possible to have a few flags up front, where it is easy for
decoders to access them without parsing the whole stream, even if their
values are not determined until late in the encoding process, without having
to buffer all the intermediate symbols in the encoder.
In order for this to work, at least _nbits bits must have already been
encoded using probabilities that are an exact power of two.
The encoder can verify the number of encoded bits is sufficient, but cannot
check this latter condition.
_val: The bits to encode (in the least _nbits significant bits).
They will be decoded in order from most-significant to least.
_nbits: The number of bits to overwrite.
This must be no more than 8.*/
void ec_enc_patch_initial_bits(ec_enc *_this,unsigned _val,unsigned _nbits);
/*Compacts the data to fit in the target size.
This moves up the raw bits at the end of the current buffer so they are at
the end of the new buffer size.
The caller must ensure that the amount of data that's already been written
will fit in the new size.
_size: The number of bytes in the new buffer.
This must be large enough to contain the bits already written, and
must be no larger than the existing size.*/
void ec_enc_shrink(ec_enc *_this,opus_uint32 _size);
/*Indicates that there are no more symbols to encode.
All reamining output bytes are flushed to the output buffer.
ec_enc_init() must be called before the encoder can be used again.*/
void ec_enc_done(ec_enc *_this);
#endif

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/* Copyright (C) 2003-2008 Jean-Marc Valin
Copyright (C) 2007-2012 Xiph.Org Foundation */
/**
@file fixed_debug.h
@brief Fixed-point operations with debugging
*/
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef FIXED_DEBUG_H
#define FIXED_DEBUG_H
#include <stdio.h>
#include "opus_defines.h"
#ifdef CELT_C
OPUS_EXPORT opus_int64 celt_mips=0;
#else
extern opus_int64 celt_mips;
#endif
#define MULT16_16SU(a,b) ((opus_val32)(opus_val16)(a)*(opus_val32)(opus_uint16)(b))
#define MULT32_32_Q31(a,b) ADD32(ADD32(SHL32(MULT16_16(SHR32((a),16),SHR((b),16)),1), SHR32(MULT16_16SU(SHR32((a),16),((b)&0x0000ffff)),15)), SHR32(MULT16_16SU(SHR32((b),16),((a)&0x0000ffff)),15))
/** 16x32 multiplication, followed by a 16-bit shift right. Results fits in 32 bits */
#define MULT16_32_Q16(a,b) ADD32(MULT16_16((a),SHR32((b),16)), SHR32(MULT16_16SU((a),((b)&0x0000ffff)),16))
#define MULT16_32_P16(a,b) MULT16_32_PX(a,b,16)
#define QCONST16(x,bits) ((opus_val16)(.5+(x)*(((opus_val32)1)<<(bits))))
#define QCONST32(x,bits) ((opus_val32)(.5+(x)*(((opus_val32)1)<<(bits))))
#define VERIFY_SHORT(x) ((x)<=32767&&(x)>=-32768)
#define VERIFY_INT(x) ((x)<=2147483647LL&&(x)>=-2147483648LL)
#define VERIFY_UINT(x) ((x)<=(2147483647LLU<<1))
#define SHR(a,b) SHR32(a,b)
#define PSHR(a,b) PSHR32(a,b)
static OPUS_INLINE short NEG16(int x)
{
int res;
if (!VERIFY_SHORT(x))
{
fprintf (stderr, "NEG16: input is not short: %d\n", (int)x);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
}
res = -x;
if (!VERIFY_SHORT(res))
{
fprintf (stderr, "NEG16: output is not short: %d\n", (int)res);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
}
celt_mips++;
return res;
}
static OPUS_INLINE int NEG32(opus_int64 x)
{
opus_int64 res;
if (!VERIFY_INT(x))
{
fprintf (stderr, "NEG16: input is not int: %d\n", (int)x);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
}
res = -x;
if (!VERIFY_INT(res))
{
fprintf (stderr, "NEG16: output is not int: %d\n", (int)res);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
}
celt_mips+=2;
return res;
}
#define EXTRACT16(x) EXTRACT16_(x, __FILE__, __LINE__)
static OPUS_INLINE short EXTRACT16_(int x, char *file, int line)
{
int res;
if (!VERIFY_SHORT(x))
{
fprintf (stderr, "EXTRACT16: input is not short: %d in %s: line %d\n", x, file, line);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
}
res = x;
celt_mips++;
return res;
}
#define EXTEND32(x) EXTEND32_(x, __FILE__, __LINE__)
static OPUS_INLINE int EXTEND32_(int x, char *file, int line)
{
int res;
if (!VERIFY_SHORT(x))
{
fprintf (stderr, "EXTEND32: input is not short: %d in %s: line %d\n", x, file, line);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
}
res = x;
celt_mips++;
return res;
}
#define SHR16(a, shift) SHR16_(a, shift, __FILE__, __LINE__)
static OPUS_INLINE short SHR16_(int a, int shift, char *file, int line)
{
int res;
if (!VERIFY_SHORT(a) || !VERIFY_SHORT(shift))
{
fprintf (stderr, "SHR16: inputs are not short: %d >> %d in %s: line %d\n", a, shift, file, line);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
}
res = a>>shift;
if (!VERIFY_SHORT(res))
{
fprintf (stderr, "SHR16: output is not short: %d in %s: line %d\n", res, file, line);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
}
celt_mips++;
return res;
}
#define SHL16(a, shift) SHL16_(a, shift, __FILE__, __LINE__)
static OPUS_INLINE short SHL16_(int a, int shift, char *file, int line)
{
int res;
if (!VERIFY_SHORT(a) || !VERIFY_SHORT(shift))
{
fprintf (stderr, "SHL16: inputs are not short: %d %d in %s: line %d\n", a, shift, file, line);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
}
res = a<<shift;
if (!VERIFY_SHORT(res))
{
fprintf (stderr, "SHL16: output is not short: %d in %s: line %d\n", res, file, line);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
}
celt_mips++;
return res;
}
static OPUS_INLINE int SHR32(opus_int64 a, int shift)
{
opus_int64 res;
if (!VERIFY_INT(a) || !VERIFY_SHORT(shift))
{
fprintf (stderr, "SHR32: inputs are not int: %d %d\n", (int)a, shift);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
}
res = a>>shift;
if (!VERIFY_INT(res))
{
fprintf (stderr, "SHR32: output is not int: %d\n", (int)res);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
}
celt_mips+=2;
return res;
}
#define SHL32(a, shift) SHL32_(a, shift, __FILE__, __LINE__)
static OPUS_INLINE int SHL32_(opus_int64 a, int shift, char *file, int line)
{
opus_int64 res;
if (!VERIFY_INT(a) || !VERIFY_SHORT(shift))
{
fprintf (stderr, "SHL32: inputs are not int: %lld %d in %s: line %d\n", a, shift, file, line);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
}
res = a<<shift;
if (!VERIFY_INT(res))
{
fprintf (stderr, "SHL32: output is not int: %lld<<%d = %lld in %s: line %d\n", a, shift, res, file, line);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
}
celt_mips+=2;
return res;
}
#define PSHR32(a,shift) (celt_mips--,SHR32(ADD32((a),(((opus_val32)(1)<<((shift))>>1))),shift))
#define VSHR32(a, shift) (((shift)>0) ? SHR32(a, shift) : SHL32(a, -(shift)))
#define ROUND16(x,a) (celt_mips--,EXTRACT16(PSHR32((x),(a))))
#define HALF16(x) (SHR16(x,1))
#define HALF32(x) (SHR32(x,1))
//#define SHR(a,shift) ((a) >> (shift))
//#define SHL(a,shift) ((a) << (shift))
#define ADD16(a, b) ADD16_(a, b, __FILE__, __LINE__)
static OPUS_INLINE short ADD16_(int a, int b, char *file, int line)
{
int res;
if (!VERIFY_SHORT(a) || !VERIFY_SHORT(b))
{
fprintf (stderr, "ADD16: inputs are not short: %d %d in %s: line %d\n", a, b, file, line);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
}
res = a+b;
if (!VERIFY_SHORT(res))
{
fprintf (stderr, "ADD16: output is not short: %d+%d=%d in %s: line %d\n", a,b,res, file, line);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
}
celt_mips++;
return res;
}
#define SUB16(a, b) SUB16_(a, b, __FILE__, __LINE__)
static OPUS_INLINE short SUB16_(int a, int b, char *file, int line)
{
int res;
if (!VERIFY_SHORT(a) || !VERIFY_SHORT(b))
{
fprintf (stderr, "SUB16: inputs are not short: %d %d in %s: line %d\n", a, b, file, line);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
}
res = a-b;
if (!VERIFY_SHORT(res))
{
fprintf (stderr, "SUB16: output is not short: %d in %s: line %d\n", res, file, line);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
}
celt_mips++;
return res;
}
#define ADD32(a, b) ADD32_(a, b, __FILE__, __LINE__)
static OPUS_INLINE int ADD32_(opus_int64 a, opus_int64 b, char *file, int line)
{
opus_int64 res;
if (!VERIFY_INT(a) || !VERIFY_INT(b))
{
fprintf (stderr, "ADD32: inputs are not int: %d %d in %s: line %d\n", (int)a, (int)b, file, line);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
}
res = a+b;
if (!VERIFY_INT(res))
{
fprintf (stderr, "ADD32: output is not int: %d in %s: line %d\n", (int)res, file, line);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
}
celt_mips+=2;
return res;
}
#define SUB32(a, b) SUB32_(a, b, __FILE__, __LINE__)
static OPUS_INLINE int SUB32_(opus_int64 a, opus_int64 b, char *file, int line)
{
opus_int64 res;
if (!VERIFY_INT(a) || !VERIFY_INT(b))
{
fprintf (stderr, "SUB32: inputs are not int: %d %d in %s: line %d\n", (int)a, (int)b, file, line);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
}
res = a-b;
if (!VERIFY_INT(res))
{
fprintf (stderr, "SUB32: output is not int: %d in %s: line %d\n", (int)res, file, line);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
}
celt_mips+=2;
return res;
}
#undef UADD32
#define UADD32(a, b) UADD32_(a, b, __FILE__, __LINE__)
static OPUS_INLINE unsigned int UADD32_(opus_uint64 a, opus_uint64 b, char *file, int line)
{
opus_uint64 res;
if (!VERIFY_UINT(a) || !VERIFY_UINT(b))
{
fprintf (stderr, "UADD32: inputs are not uint32: %llu %llu in %s: line %d\n", a, b, file, line);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
}
res = a+b;
if (!VERIFY_UINT(res))
{
fprintf (stderr, "UADD32: output is not uint32: %llu in %s: line %d\n", res, file, line);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
}
celt_mips+=2;
return res;
}
#undef USUB32
#define USUB32(a, b) USUB32_(a, b, __FILE__, __LINE__)
static OPUS_INLINE unsigned int USUB32_(opus_uint64 a, opus_uint64 b, char *file, int line)
{
opus_uint64 res;
if (!VERIFY_UINT(a) || !VERIFY_UINT(b))
{
fprintf (stderr, "USUB32: inputs are not uint32: %llu %llu in %s: line %d\n", a, b, file, line);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
}
if (a<b)
{
fprintf (stderr, "USUB32: inputs underflow: %llu < %llu in %s: line %d\n", a, b, file, line);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
}
res = a-b;
if (!VERIFY_UINT(res))
{
fprintf (stderr, "USUB32: output is not uint32: %llu - %llu = %llu in %s: line %d\n", a, b, res, file, line);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
}
celt_mips+=2;
return res;
}
/* result fits in 16 bits */
static OPUS_INLINE short MULT16_16_16(int a, int b)
{
int res;
if (!VERIFY_SHORT(a) || !VERIFY_SHORT(b))
{
fprintf (stderr, "MULT16_16_16: inputs are not short: %d %d\n", a, b);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
}
res = a*b;
if (!VERIFY_SHORT(res))
{
fprintf (stderr, "MULT16_16_16: output is not short: %d\n", res);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
}
celt_mips++;
return res;
}
#define MULT16_16(a, b) MULT16_16_(a, b, __FILE__, __LINE__)
static OPUS_INLINE int MULT16_16_(int a, int b, char *file, int line)
{
opus_int64 res;
if (!VERIFY_SHORT(a) || !VERIFY_SHORT(b))
{
fprintf (stderr, "MULT16_16: inputs are not short: %d %d in %s: line %d\n", a, b, file, line);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
}
res = ((opus_int64)a)*b;
if (!VERIFY_INT(res))
{
fprintf (stderr, "MULT16_16: output is not int: %d in %s: line %d\n", (int)res, file, line);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
}
celt_mips++;
return res;
}
#define MAC16_16(c,a,b) (celt_mips-=2,ADD32((c),MULT16_16((a),(b))))
#define MULT16_32_QX(a, b, Q) MULT16_32_QX_(a, b, Q, __FILE__, __LINE__)
static OPUS_INLINE int MULT16_32_QX_(int a, opus_int64 b, int Q, char *file, int line)
{
opus_int64 res;
if (!VERIFY_SHORT(a) || !VERIFY_INT(b))
{
fprintf (stderr, "MULT16_32_Q%d: inputs are not short+int: %d %d in %s: line %d\n", Q, (int)a, (int)b, file, line);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
}
if (ABS32(b)>=((opus_val32)(1)<<(15+Q)))
{
fprintf (stderr, "MULT16_32_Q%d: second operand too large: %d %d in %s: line %d\n", Q, (int)a, (int)b, file, line);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
}
res = (((opus_int64)a)*(opus_int64)b) >> Q;
if (!VERIFY_INT(res))
{
fprintf (stderr, "MULT16_32_Q%d: output is not int: %d*%d=%d in %s: line %d\n", Q, (int)a, (int)b,(int)res, file, line);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
}
if (Q==15)
celt_mips+=3;
else
celt_mips+=4;
return res;
}
#define MULT16_32_PX(a, b, Q) MULT16_32_PX_(a, b, Q, __FILE__, __LINE__)
static OPUS_INLINE int MULT16_32_PX_(int a, opus_int64 b, int Q, char *file, int line)
{
opus_int64 res;
if (!VERIFY_SHORT(a) || !VERIFY_INT(b))
{
fprintf (stderr, "MULT16_32_P%d: inputs are not short+int: %d %d in %s: line %d\n\n", Q, (int)a, (int)b, file, line);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
}
if (ABS32(b)>=((opus_int64)(1)<<(15+Q)))
{
fprintf (stderr, "MULT16_32_Q%d: second operand too large: %d %d in %s: line %d\n\n", Q, (int)a, (int)b,file, line);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
}
res = ((((opus_int64)a)*(opus_int64)b) + (((opus_val32)(1)<<Q)>>1))>> Q;
if (!VERIFY_INT(res))
{
fprintf (stderr, "MULT16_32_P%d: output is not int: %d*%d=%d in %s: line %d\n\n", Q, (int)a, (int)b,(int)res, file, line);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
}
if (Q==15)
celt_mips+=4;
else
celt_mips+=5;
return res;
}
#define MULT16_32_Q15(a,b) MULT16_32_QX(a,b,15)
#define MAC16_32_Q15(c,a,b) (celt_mips-=2,ADD32((c),MULT16_32_Q15((a),(b))))
static OPUS_INLINE int SATURATE(int a, int b)
{
if (a>b)
a=b;
if (a<-b)
a = -b;
celt_mips+=3;
return a;
}
static OPUS_INLINE opus_int16 SATURATE16(opus_int32 a)
{
celt_mips+=3;
if (a>32767)
return 32767;
else if (a<-32768)
return -32768;
else return a;
}
static OPUS_INLINE int MULT16_16_Q11_32(int a, int b)
{
opus_int64 res;
if (!VERIFY_SHORT(a) || !VERIFY_SHORT(b))
{
fprintf (stderr, "MULT16_16_Q11: inputs are not short: %d %d\n", a, b);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
}
res = ((opus_int64)a)*b;
res >>= 11;
if (!VERIFY_INT(res))
{
fprintf (stderr, "MULT16_16_Q11: output is not short: %d*%d=%d\n", (int)a, (int)b, (int)res);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
}
celt_mips+=3;
return res;
}
static OPUS_INLINE short MULT16_16_Q13(int a, int b)
{
opus_int64 res;
if (!VERIFY_SHORT(a) || !VERIFY_SHORT(b))
{
fprintf (stderr, "MULT16_16_Q13: inputs are not short: %d %d\n", a, b);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
}
res = ((opus_int64)a)*b;
res >>= 13;
if (!VERIFY_SHORT(res))
{
fprintf (stderr, "MULT16_16_Q13: output is not short: %d*%d=%d\n", a, b, (int)res);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
}
celt_mips+=3;
return res;
}
static OPUS_INLINE short MULT16_16_Q14(int a, int b)
{
opus_int64 res;
if (!VERIFY_SHORT(a) || !VERIFY_SHORT(b))
{
fprintf (stderr, "MULT16_16_Q14: inputs are not short: %d %d\n", a, b);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
}
res = ((opus_int64)a)*b;
res >>= 14;
if (!VERIFY_SHORT(res))
{
fprintf (stderr, "MULT16_16_Q14: output is not short: %d\n", (int)res);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
}
celt_mips+=3;
return res;
}
#define MULT16_16_Q15(a, b) MULT16_16_Q15_(a, b, __FILE__, __LINE__)
static OPUS_INLINE short MULT16_16_Q15_(int a, int b, char *file, int line)
{
opus_int64 res;
if (!VERIFY_SHORT(a) || !VERIFY_SHORT(b))
{
fprintf (stderr, "MULT16_16_Q15: inputs are not short: %d %d in %s: line %d\n", a, b, file, line);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
}
res = ((opus_int64)a)*b;
res >>= 15;
if (!VERIFY_SHORT(res))
{
fprintf (stderr, "MULT16_16_Q15: output is not short: %d in %s: line %d\n", (int)res, file, line);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
}
celt_mips+=1;
return res;
}
static OPUS_INLINE short MULT16_16_P13(int a, int b)
{
opus_int64 res;
if (!VERIFY_SHORT(a) || !VERIFY_SHORT(b))
{
fprintf (stderr, "MULT16_16_P13: inputs are not short: %d %d\n", a, b);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
}
res = ((opus_int64)a)*b;
res += 4096;
if (!VERIFY_INT(res))
{
fprintf (stderr, "MULT16_16_P13: overflow: %d*%d=%d\n", a, b, (int)res);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
}
res >>= 13;
if (!VERIFY_SHORT(res))
{
fprintf (stderr, "MULT16_16_P13: output is not short: %d*%d=%d\n", a, b, (int)res);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
}
celt_mips+=4;
return res;
}
static OPUS_INLINE short MULT16_16_P14(int a, int b)
{
opus_int64 res;
if (!VERIFY_SHORT(a) || !VERIFY_SHORT(b))
{
fprintf (stderr, "MULT16_16_P14: inputs are not short: %d %d\n", a, b);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
}
res = ((opus_int64)a)*b;
res += 8192;
if (!VERIFY_INT(res))
{
fprintf (stderr, "MULT16_16_P14: overflow: %d*%d=%d\n", a, b, (int)res);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
}
res >>= 14;
if (!VERIFY_SHORT(res))
{
fprintf (stderr, "MULT16_16_P14: output is not short: %d*%d=%d\n", a, b, (int)res);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
}
celt_mips+=4;
return res;
}
static OPUS_INLINE short MULT16_16_P15(int a, int b)
{
opus_int64 res;
if (!VERIFY_SHORT(a) || !VERIFY_SHORT(b))
{
fprintf (stderr, "MULT16_16_P15: inputs are not short: %d %d\n", a, b);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
}
res = ((opus_int64)a)*b;
res += 16384;
if (!VERIFY_INT(res))
{
fprintf (stderr, "MULT16_16_P15: overflow: %d*%d=%d\n", a, b, (int)res);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
}
res >>= 15;
if (!VERIFY_SHORT(res))
{
fprintf (stderr, "MULT16_16_P15: output is not short: %d*%d=%d\n", a, b, (int)res);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
}
celt_mips+=2;
return res;
}
#define DIV32_16(a, b) DIV32_16_(a, b, __FILE__, __LINE__)
static OPUS_INLINE int DIV32_16_(opus_int64 a, opus_int64 b, char *file, int line)
{
opus_int64 res;
if (b==0)
{
fprintf(stderr, "DIV32_16: divide by zero: %d/%d in %s: line %d\n", (int)a, (int)b, file, line);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
return 0;
}
if (!VERIFY_INT(a) || !VERIFY_SHORT(b))
{
fprintf (stderr, "DIV32_16: inputs are not int/short: %d %d in %s: line %d\n", (int)a, (int)b, file, line);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
}
res = a/b;
if (!VERIFY_SHORT(res))
{
fprintf (stderr, "DIV32_16: output is not short: %d / %d = %d in %s: line %d\n", (int)a,(int)b,(int)res, file, line);
if (res>32767)
res = 32767;
if (res<-32768)
res = -32768;
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
}
celt_mips+=35;
return res;
}
#define DIV32(a, b) DIV32_(a, b, __FILE__, __LINE__)
static OPUS_INLINE int DIV32_(opus_int64 a, opus_int64 b, char *file, int line)
{
opus_int64 res;
if (b==0)
{
fprintf(stderr, "DIV32: divide by zero: %d/%d in %s: line %d\n", (int)a, (int)b, file, line);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
return 0;
}
if (!VERIFY_INT(a) || !VERIFY_INT(b))
{
fprintf (stderr, "DIV32: inputs are not int/short: %d %d in %s: line %d\n", (int)a, (int)b, file, line);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
}
res = a/b;
if (!VERIFY_INT(res))
{
fprintf (stderr, "DIV32: output is not int: %d in %s: line %d\n", (int)res, file, line);
#ifdef FIXED_DEBUG_ASSERT
celt_assert(0);
#endif
}
celt_mips+=70;
return res;
}
#undef PRINT_MIPS
#define PRINT_MIPS(file) do {fprintf (file, "total complexity = %llu MIPS\n", celt_mips);} while (0);
#endif

134
src/engine/external/opus/celt/fixed_generic.h vendored Normal file
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@ -0,0 +1,134 @@
/* Copyright (C) 2007-2009 Xiph.Org Foundation
Copyright (C) 2003-2008 Jean-Marc Valin
Copyright (C) 2007-2008 CSIRO */
/**
@file fixed_generic.h
@brief Generic fixed-point operations
*/
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef FIXED_GENERIC_H
#define FIXED_GENERIC_H
/** Multiply a 16-bit signed value by a 16-bit unsigned value. The result is a 32-bit signed value */
#define MULT16_16SU(a,b) ((opus_val32)(opus_val16)(a)*(opus_val32)(opus_uint16)(b))
/** 16x32 multiplication, followed by a 16-bit shift right. Results fits in 32 bits */
#define MULT16_32_Q16(a,b) ADD32(MULT16_16((a),SHR((b),16)), SHR(MULT16_16SU((a),((b)&0x0000ffff)),16))
/** 16x32 multiplication, followed by a 16-bit shift right (round-to-nearest). Results fits in 32 bits */
#define MULT16_32_P16(a,b) ADD32(MULT16_16((a),SHR((b),16)), PSHR(MULT16_16SU((a),((b)&0x0000ffff)),16))
/** 16x32 multiplication, followed by a 15-bit shift right. Results fits in 32 bits */
#define MULT16_32_Q15(a,b) ADD32(SHL(MULT16_16((a),SHR((b),16)),1), SHR(MULT16_16SU((a),((b)&0x0000ffff)),15))
/** 32x32 multiplication, followed by a 31-bit shift right. Results fits in 32 bits */
#define MULT32_32_Q31(a,b) ADD32(ADD32(SHL(MULT16_16(SHR((a),16),SHR((b),16)),1), SHR(MULT16_16SU(SHR((a),16),((b)&0x0000ffff)),15)), SHR(MULT16_16SU(SHR((b),16),((a)&0x0000ffff)),15))
/** Compile-time conversion of float constant to 16-bit value */
#define QCONST16(x,bits) ((opus_val16)(.5+(x)*(((opus_val32)1)<<(bits))))
/** Compile-time conversion of float constant to 32-bit value */
#define QCONST32(x,bits) ((opus_val32)(.5+(x)*(((opus_val32)1)<<(bits))))
/** Negate a 16-bit value */
#define NEG16(x) (-(x))
/** Negate a 32-bit value */
#define NEG32(x) (-(x))
/** Change a 32-bit value into a 16-bit value. The value is assumed to fit in 16-bit, otherwise the result is undefined */
#define EXTRACT16(x) ((opus_val16)(x))
/** Change a 16-bit value into a 32-bit value */
#define EXTEND32(x) ((opus_val32)(x))
/** Arithmetic shift-right of a 16-bit value */
#define SHR16(a,shift) ((a) >> (shift))
/** Arithmetic shift-left of a 16-bit value */
#define SHL16(a,shift) ((opus_int16)((opus_uint16)(a)<<(shift)))
/** Arithmetic shift-right of a 32-bit value */
#define SHR32(a,shift) ((a) >> (shift))
/** Arithmetic shift-left of a 32-bit value */
#define SHL32(a,shift) ((opus_int32)((opus_uint32)(a)<<(shift)))
/** 32-bit arithmetic shift right with rounding-to-nearest instead of rounding down */
#define PSHR32(a,shift) (SHR32((a)+((EXTEND32(1)<<((shift))>>1)),shift))
/** 32-bit arithmetic shift right where the argument can be negative */
#define VSHR32(a, shift) (((shift)>0) ? SHR32(a, shift) : SHL32(a, -(shift)))
/** "RAW" macros, should not be used outside of this header file */
#define SHR(a,shift) ((a) >> (shift))
#define SHL(a,shift) SHL32(a,shift)
#define PSHR(a,shift) (SHR((a)+((EXTEND32(1)<<((shift))>>1)),shift))
#define SATURATE(x,a) (((x)>(a) ? (a) : (x)<-(a) ? -(a) : (x)))
#define SATURATE16(x) (EXTRACT16((x)>32767 ? 32767 : (x)<-32768 ? -32768 : (x)))
/** Shift by a and round-to-neareast 32-bit value. Result is a 16-bit value */
#define ROUND16(x,a) (EXTRACT16(PSHR32((x),(a))))
/** Divide by two */
#define HALF16(x) (SHR16(x,1))
#define HALF32(x) (SHR32(x,1))
/** Add two 16-bit values */
#define ADD16(a,b) ((opus_val16)((opus_val16)(a)+(opus_val16)(b)))
/** Subtract two 16-bit values */
#define SUB16(a,b) ((opus_val16)(a)-(opus_val16)(b))
/** Add two 32-bit values */
#define ADD32(a,b) ((opus_val32)(a)+(opus_val32)(b))
/** Subtract two 32-bit values */
#define SUB32(a,b) ((opus_val32)(a)-(opus_val32)(b))
/** 16x16 multiplication where the result fits in 16 bits */
#define MULT16_16_16(a,b) ((((opus_val16)(a))*((opus_val16)(b))))
/* (opus_val32)(opus_val16) gives TI compiler a hint that it's 16x16->32 multiply */
/** 16x16 multiplication where the result fits in 32 bits */
#define MULT16_16(a,b) (((opus_val32)(opus_val16)(a))*((opus_val32)(opus_val16)(b)))
/** 16x16 multiply-add where the result fits in 32 bits */
#define MAC16_16(c,a,b) (ADD32((c),MULT16_16((a),(b))))
/** 16x32 multiply, followed by a 15-bit shift right and 32-bit add.
b must fit in 31 bits.
Result fits in 32 bits. */
#define MAC16_32_Q15(c,a,b) ADD32(c,ADD32(MULT16_16((a),SHR((b),15)), SHR(MULT16_16((a),((b)&0x00007fff)),15)))
#define MULT16_16_Q11_32(a,b) (SHR(MULT16_16((a),(b)),11))
#define MULT16_16_Q11(a,b) (SHR(MULT16_16((a),(b)),11))
#define MULT16_16_Q13(a,b) (SHR(MULT16_16((a),(b)),13))
#define MULT16_16_Q14(a,b) (SHR(MULT16_16((a),(b)),14))
#define MULT16_16_Q15(a,b) (SHR(MULT16_16((a),(b)),15))
#define MULT16_16_P13(a,b) (SHR(ADD32(4096,MULT16_16((a),(b))),13))
#define MULT16_16_P14(a,b) (SHR(ADD32(8192,MULT16_16((a),(b))),14))
#define MULT16_16_P15(a,b) (SHR(ADD32(16384,MULT16_16((a),(b))),15))
/** Divide a 32-bit value by a 16-bit value. Result fits in 16 bits */
#define DIV32_16(a,b) ((opus_val16)(((opus_val32)(a))/((opus_val16)(b))))
/** Divide a 32-bit value by a 32-bit value. Result fits in 32 bits */
#define DIV32(a,b) (((opus_val32)(a))/((opus_val32)(b)))
#endif

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/* Copyright (C) 2001 Erik de Castro Lopo <erikd AT mega-nerd DOT com> */
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/* Version 1.1 */
#ifndef FLOAT_CAST_H
#define FLOAT_CAST_H
#include "arch.h"
/*============================================================================
** On Intel Pentium processors (especially PIII and probably P4), converting
** from float to int is very slow. To meet the C specs, the code produced by
** most C compilers targeting Pentium needs to change the FPU rounding mode
** before the float to int conversion is performed.
**
** Changing the FPU rounding mode causes the FPU pipeline to be flushed. It
** is this flushing of the pipeline which is so slow.
**
** Fortunately the ISO C99 specifications define the functions lrint, lrintf,
** llrint and llrintf which fix this problem as a side effect.
**
** On Unix-like systems, the configure process should have detected the
** presence of these functions. If they weren't found we have to replace them
** here with a standard C cast.
*/
/*
** The C99 prototypes for lrint and lrintf are as follows:
**
** long int lrintf (float x) ;
** long int lrint (double x) ;
*/
/* The presence of the required functions are detected during the configure
** process and the values HAVE_LRINT and HAVE_LRINTF are set accordingly in
** the config.h file.
*/
#if (HAVE_LRINTF)
/* These defines enable functionality introduced with the 1999 ISO C
** standard. They must be defined before the inclusion of math.h to
** engage them. If optimisation is enabled, these functions will be
** inlined. With optimisation switched off, you have to link in the
** maths library using -lm.
*/
#define _ISOC9X_SOURCE 1
#define _ISOC99_SOURCE 1
#define __USE_ISOC9X 1
#define __USE_ISOC99 1
#include <math.h>
#define float2int(x) lrintf(x)
#elif (defined(HAVE_LRINT))
#define _ISOC9X_SOURCE 1
#define _ISOC99_SOURCE 1
#define __USE_ISOC9X 1
#define __USE_ISOC99 1
#include <math.h>
#define float2int(x) lrint(x)
#elif (defined(_MSC_VER) && _MSC_VER >= 1400) && (defined (WIN64) || defined (_WIN64))
#include <xmmintrin.h>
__inline long int float2int(float value)
{
return _mm_cvtss_si32(_mm_load_ss(&value));
}
#elif (defined(_MSC_VER) && _MSC_VER >= 1400) && (defined (WIN32) || defined (_WIN32))
#include <math.h>
/* Win32 doesn't seem to have these functions.
** Therefore implement OPUS_INLINE versions of these functions here.
*/
__inline long int
float2int (float flt)
{ int intgr;
_asm
{ fld flt
fistp intgr
} ;
return intgr ;
}
#else
#if (defined(__GNUC__) && defined(__STDC__) && __STDC__ && __STDC_VERSION__ >= 199901L)
/* supported by gcc in C99 mode, but not by all other compilers */
#warning "Don't have the functions lrint() and lrintf ()."
#warning "Replacing these functions with a standard C cast."
#endif /* __STDC_VERSION__ >= 199901L */
#include <math.h>
#define float2int(flt) ((int)(floor(.5+flt)))
#endif
#ifndef DISABLE_FLOAT_API
static OPUS_INLINE opus_int16 FLOAT2INT16(float x)
{
x = x*CELT_SIG_SCALE;
x = MAX32(x, -32768);
x = MIN32(x, 32767);
return (opus_int16)float2int(x);
}
#endif /* DISABLE_FLOAT_API */
#endif /* FLOAT_CAST_H */

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/*Copyright (c) 2003-2004, Mark Borgerding
Lots of modifications by Jean-Marc Valin
Copyright (c) 2005-2007, Xiph.Org Foundation
Copyright (c) 2008, Xiph.Org Foundation, CSIRO
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.*/
/* This code is originally from Mark Borgerding's KISS-FFT but has been
heavily modified to better suit Opus */
#ifndef SKIP_CONFIG_H
# ifdef HAVE_CONFIG_H
# include "config.h"
# endif
#endif
#include "_kiss_fft_guts.h"
#include "arch.h"
#include "os_support.h"
#include "mathops.h"
#include "stack_alloc.h"
/* The guts header contains all the multiplication and addition macros that are defined for
complex numbers. It also delares the kf_ internal functions.
*/
static void kf_bfly2(
kiss_fft_cpx * Fout,
const size_t fstride,
const kiss_fft_state *st,
int m,
int N,
int mm
)
{
kiss_fft_cpx * Fout2;
const kiss_twiddle_cpx * tw1;
int i,j;
kiss_fft_cpx * Fout_beg = Fout;
for (i=0;i<N;i++)
{
Fout = Fout_beg + i*mm;
Fout2 = Fout + m;
tw1 = st->twiddles;
for(j=0;j<m;j++)
{
kiss_fft_cpx t;
Fout->r = SHR32(Fout->r, 1);Fout->i = SHR32(Fout->i, 1);
Fout2->r = SHR32(Fout2->r, 1);Fout2->i = SHR32(Fout2->i, 1);
C_MUL (t, *Fout2 , *tw1);
tw1 += fstride;
C_SUB( *Fout2 , *Fout , t );
C_ADDTO( *Fout , t );
++Fout2;
++Fout;
}
}
}
static void ki_bfly2(
kiss_fft_cpx * Fout,
const size_t fstride,
const kiss_fft_state *st,
int m,
int N,
int mm
)
{
kiss_fft_cpx * Fout2;
const kiss_twiddle_cpx * tw1;
kiss_fft_cpx t;
int i,j;
kiss_fft_cpx * Fout_beg = Fout;
for (i=0;i<N;i++)
{
Fout = Fout_beg + i*mm;
Fout2 = Fout + m;
tw1 = st->twiddles;
for(j=0;j<m;j++)
{
C_MULC (t, *Fout2 , *tw1);
tw1 += fstride;
C_SUB( *Fout2 , *Fout , t );
C_ADDTO( *Fout , t );
++Fout2;
++Fout;
}
}
}
static void kf_bfly4(
kiss_fft_cpx * Fout,
const size_t fstride,
const kiss_fft_state *st,
int m,
int N,
int mm
)
{
const kiss_twiddle_cpx *tw1,*tw2,*tw3;
kiss_fft_cpx scratch[6];
const size_t m2=2*m;
const size_t m3=3*m;
int i, j;
kiss_fft_cpx * Fout_beg = Fout;
for (i=0;i<N;i++)
{
Fout = Fout_beg + i*mm;
tw3 = tw2 = tw1 = st->twiddles;
for (j=0;j<m;j++)
{
C_MUL4(scratch[0],Fout[m] , *tw1 );
C_MUL4(scratch[1],Fout[m2] , *tw2 );
C_MUL4(scratch[2],Fout[m3] , *tw3 );
Fout->r = PSHR32(Fout->r, 2);
Fout->i = PSHR32(Fout->i, 2);
C_SUB( scratch[5] , *Fout, scratch[1] );
C_ADDTO(*Fout, scratch[1]);
C_ADD( scratch[3] , scratch[0] , scratch[2] );
C_SUB( scratch[4] , scratch[0] , scratch[2] );
C_SUB( Fout[m2], *Fout, scratch[3] );
tw1 += fstride;
tw2 += fstride*2;
tw3 += fstride*3;
C_ADDTO( *Fout , scratch[3] );
Fout[m].r = scratch[5].r + scratch[4].i;
Fout[m].i = scratch[5].i - scratch[4].r;
Fout[m3].r = scratch[5].r - scratch[4].i;
Fout[m3].i = scratch[5].i + scratch[4].r;
++Fout;
}
}
}
static void ki_bfly4(
kiss_fft_cpx * Fout,
const size_t fstride,
const kiss_fft_state *st,
int m,
int N,
int mm
)
{
const kiss_twiddle_cpx *tw1,*tw2,*tw3;
kiss_fft_cpx scratch[6];
const size_t m2=2*m;
const size_t m3=3*m;
int i, j;
kiss_fft_cpx * Fout_beg = Fout;
for (i=0;i<N;i++)
{
Fout = Fout_beg + i*mm;
tw3 = tw2 = tw1 = st->twiddles;
for (j=0;j<m;j++)
{
C_MULC(scratch[0],Fout[m] , *tw1 );
C_MULC(scratch[1],Fout[m2] , *tw2 );
C_MULC(scratch[2],Fout[m3] , *tw3 );
C_SUB( scratch[5] , *Fout, scratch[1] );
C_ADDTO(*Fout, scratch[1]);
C_ADD( scratch[3] , scratch[0] , scratch[2] );
C_SUB( scratch[4] , scratch[0] , scratch[2] );
C_SUB( Fout[m2], *Fout, scratch[3] );
tw1 += fstride;
tw2 += fstride*2;
tw3 += fstride*3;
C_ADDTO( *Fout , scratch[3] );
Fout[m].r = scratch[5].r - scratch[4].i;
Fout[m].i = scratch[5].i + scratch[4].r;
Fout[m3].r = scratch[5].r + scratch[4].i;
Fout[m3].i = scratch[5].i - scratch[4].r;
++Fout;
}
}
}
#ifndef RADIX_TWO_ONLY
static void kf_bfly3(
kiss_fft_cpx * Fout,
const size_t fstride,
const kiss_fft_state *st,
int m,
int N,
int mm
)
{
int i;
size_t k;
const size_t m2 = 2*m;
const kiss_twiddle_cpx *tw1,*tw2;
kiss_fft_cpx scratch[5];
kiss_twiddle_cpx epi3;
kiss_fft_cpx * Fout_beg = Fout;
epi3 = st->twiddles[fstride*m];
for (i=0;i<N;i++)
{
Fout = Fout_beg + i*mm;
tw1=tw2=st->twiddles;
k=m;
do {
C_FIXDIV(*Fout,3); C_FIXDIV(Fout[m],3); C_FIXDIV(Fout[m2],3);
C_MUL(scratch[1],Fout[m] , *tw1);
C_MUL(scratch[2],Fout[m2] , *tw2);
C_ADD(scratch[3],scratch[1],scratch[2]);
C_SUB(scratch[0],scratch[1],scratch[2]);
tw1 += fstride;
tw2 += fstride*2;
Fout[m].r = Fout->r - HALF_OF(scratch[3].r);
Fout[m].i = Fout->i - HALF_OF(scratch[3].i);
C_MULBYSCALAR( scratch[0] , epi3.i );
C_ADDTO(*Fout,scratch[3]);
Fout[m2].r = Fout[m].r + scratch[0].i;
Fout[m2].i = Fout[m].i - scratch[0].r;
Fout[m].r -= scratch[0].i;
Fout[m].i += scratch[0].r;
++Fout;
} while(--k);
}
}
static void ki_bfly3(
kiss_fft_cpx * Fout,
const size_t fstride,
const kiss_fft_state *st,
int m,
int N,
int mm
)
{
int i, k;
const size_t m2 = 2*m;
const kiss_twiddle_cpx *tw1,*tw2;
kiss_fft_cpx scratch[5];
kiss_twiddle_cpx epi3;
kiss_fft_cpx * Fout_beg = Fout;
epi3 = st->twiddles[fstride*m];
for (i=0;i<N;i++)
{
Fout = Fout_beg + i*mm;
tw1=tw2=st->twiddles;
k=m;
do{
C_MULC(scratch[1],Fout[m] , *tw1);
C_MULC(scratch[2],Fout[m2] , *tw2);
C_ADD(scratch[3],scratch[1],scratch[2]);
C_SUB(scratch[0],scratch[1],scratch[2]);
tw1 += fstride;
tw2 += fstride*2;
Fout[m].r = Fout->r - HALF_OF(scratch[3].r);
Fout[m].i = Fout->i - HALF_OF(scratch[3].i);
C_MULBYSCALAR( scratch[0] , -epi3.i );
C_ADDTO(*Fout,scratch[3]);
Fout[m2].r = Fout[m].r + scratch[0].i;
Fout[m2].i = Fout[m].i - scratch[0].r;
Fout[m].r -= scratch[0].i;
Fout[m].i += scratch[0].r;
++Fout;
}while(--k);
}
}
static void kf_bfly5(
kiss_fft_cpx * Fout,
const size_t fstride,
const kiss_fft_state *st,
int m,
int N,
int mm
)
{
kiss_fft_cpx *Fout0,*Fout1,*Fout2,*Fout3,*Fout4;
int i, u;
kiss_fft_cpx scratch[13];
const kiss_twiddle_cpx * twiddles = st->twiddles;
const kiss_twiddle_cpx *tw;
kiss_twiddle_cpx ya,yb;
kiss_fft_cpx * Fout_beg = Fout;
ya = twiddles[fstride*m];
yb = twiddles[fstride*2*m];
tw=st->twiddles;
for (i=0;i<N;i++)
{
Fout = Fout_beg + i*mm;
Fout0=Fout;
Fout1=Fout0+m;
Fout2=Fout0+2*m;
Fout3=Fout0+3*m;
Fout4=Fout0+4*m;
for ( u=0; u<m; ++u ) {
C_FIXDIV( *Fout0,5); C_FIXDIV( *Fout1,5); C_FIXDIV( *Fout2,5); C_FIXDIV( *Fout3,5); C_FIXDIV( *Fout4,5);
scratch[0] = *Fout0;
C_MUL(scratch[1] ,*Fout1, tw[u*fstride]);
C_MUL(scratch[2] ,*Fout2, tw[2*u*fstride]);
C_MUL(scratch[3] ,*Fout3, tw[3*u*fstride]);
C_MUL(scratch[4] ,*Fout4, tw[4*u*fstride]);
C_ADD( scratch[7],scratch[1],scratch[4]);
C_SUB( scratch[10],scratch[1],scratch[4]);
C_ADD( scratch[8],scratch[2],scratch[3]);
C_SUB( scratch[9],scratch[2],scratch[3]);
Fout0->r += scratch[7].r + scratch[8].r;
Fout0->i += scratch[7].i + scratch[8].i;
scratch[5].r = scratch[0].r + S_MUL(scratch[7].r,ya.r) + S_MUL(scratch[8].r,yb.r);
scratch[5].i = scratch[0].i + S_MUL(scratch[7].i,ya.r) + S_MUL(scratch[8].i,yb.r);
scratch[6].r = S_MUL(scratch[10].i,ya.i) + S_MUL(scratch[9].i,yb.i);
scratch[6].i = -S_MUL(scratch[10].r,ya.i) - S_MUL(scratch[9].r,yb.i);
C_SUB(*Fout1,scratch[5],scratch[6]);
C_ADD(*Fout4,scratch[5],scratch[6]);
scratch[11].r = scratch[0].r + S_MUL(scratch[7].r,yb.r) + S_MUL(scratch[8].r,ya.r);
scratch[11].i = scratch[0].i + S_MUL(scratch[7].i,yb.r) + S_MUL(scratch[8].i,ya.r);
scratch[12].r = - S_MUL(scratch[10].i,yb.i) + S_MUL(scratch[9].i,ya.i);
scratch[12].i = S_MUL(scratch[10].r,yb.i) - S_MUL(scratch[9].r,ya.i);
C_ADD(*Fout2,scratch[11],scratch[12]);
C_SUB(*Fout3,scratch[11],scratch[12]);
++Fout0;++Fout1;++Fout2;++Fout3;++Fout4;
}
}
}
static void ki_bfly5(
kiss_fft_cpx * Fout,
const size_t fstride,
const kiss_fft_state *st,
int m,
int N,
int mm
)
{
kiss_fft_cpx *Fout0,*Fout1,*Fout2,*Fout3,*Fout4;
int i, u;
kiss_fft_cpx scratch[13];
const kiss_twiddle_cpx * twiddles = st->twiddles;
const kiss_twiddle_cpx *tw;
kiss_twiddle_cpx ya,yb;
kiss_fft_cpx * Fout_beg = Fout;
ya = twiddles[fstride*m];
yb = twiddles[fstride*2*m];
tw=st->twiddles;
for (i=0;i<N;i++)
{
Fout = Fout_beg + i*mm;
Fout0=Fout;
Fout1=Fout0+m;
Fout2=Fout0+2*m;
Fout3=Fout0+3*m;
Fout4=Fout0+4*m;
for ( u=0; u<m; ++u ) {
scratch[0] = *Fout0;
C_MULC(scratch[1] ,*Fout1, tw[u*fstride]);
C_MULC(scratch[2] ,*Fout2, tw[2*u*fstride]);
C_MULC(scratch[3] ,*Fout3, tw[3*u*fstride]);
C_MULC(scratch[4] ,*Fout4, tw[4*u*fstride]);
C_ADD( scratch[7],scratch[1],scratch[4]);
C_SUB( scratch[10],scratch[1],scratch[4]);
C_ADD( scratch[8],scratch[2],scratch[3]);
C_SUB( scratch[9],scratch[2],scratch[3]);
Fout0->r += scratch[7].r + scratch[8].r;
Fout0->i += scratch[7].i + scratch[8].i;
scratch[5].r = scratch[0].r + S_MUL(scratch[7].r,ya.r) + S_MUL(scratch[8].r,yb.r);
scratch[5].i = scratch[0].i + S_MUL(scratch[7].i,ya.r) + S_MUL(scratch[8].i,yb.r);
scratch[6].r = -S_MUL(scratch[10].i,ya.i) - S_MUL(scratch[9].i,yb.i);
scratch[6].i = S_MUL(scratch[10].r,ya.i) + S_MUL(scratch[9].r,yb.i);
C_SUB(*Fout1,scratch[5],scratch[6]);
C_ADD(*Fout4,scratch[5],scratch[6]);
scratch[11].r = scratch[0].r + S_MUL(scratch[7].r,yb.r) + S_MUL(scratch[8].r,ya.r);
scratch[11].i = scratch[0].i + S_MUL(scratch[7].i,yb.r) + S_MUL(scratch[8].i,ya.r);
scratch[12].r = S_MUL(scratch[10].i,yb.i) - S_MUL(scratch[9].i,ya.i);
scratch[12].i = -S_MUL(scratch[10].r,yb.i) + S_MUL(scratch[9].r,ya.i);
C_ADD(*Fout2,scratch[11],scratch[12]);
C_SUB(*Fout3,scratch[11],scratch[12]);
++Fout0;++Fout1;++Fout2;++Fout3;++Fout4;
}
}
}
#endif
#ifdef CUSTOM_MODES
static
void compute_bitrev_table(
int Fout,
opus_int16 *f,
const size_t fstride,
int in_stride,
opus_int16 * factors,
const kiss_fft_state *st
)
{
const int p=*factors++; /* the radix */
const int m=*factors++; /* stage's fft length/p */
/*printf ("fft %d %d %d %d %d %d\n", p*m, m, p, s2, fstride*in_stride, N);*/
if (m==1)
{
int j;
for (j=0;j<p;j++)
{
*f = Fout+j;
f += fstride*in_stride;
}
} else {
int j;
for (j=0;j<p;j++)
{
compute_bitrev_table( Fout , f, fstride*p, in_stride, factors,st);
f += fstride*in_stride;
Fout += m;
}
}
}
/* facbuf is populated by p1,m1,p2,m2, ...
where
p[i] * m[i] = m[i-1]
m0 = n */
static
int kf_factor(int n,opus_int16 * facbuf)
{
int p=4;
/*factor out powers of 4, powers of 2, then any remaining primes */
do {
while (n % p) {
switch (p) {
case 4: p = 2; break;
case 2: p = 3; break;
default: p += 2; break;
}
if (p>32000 || (opus_int32)p*(opus_int32)p > n)
p = n; /* no more factors, skip to end */
}
n /= p;
#ifdef RADIX_TWO_ONLY
if (p!=2 && p != 4)
#else
if (p>5)
#endif
{
return 0;
}
*facbuf++ = p;
*facbuf++ = n;
} while (n > 1);
return 1;
}
static void compute_twiddles(kiss_twiddle_cpx *twiddles, int nfft)
{
int i;
#ifdef FIXED_POINT
for (i=0;i<nfft;++i) {
opus_val32 phase = -i;
kf_cexp2(twiddles+i, DIV32(SHL32(phase,17),nfft));
}
#else
for (i=0;i<nfft;++i) {
const double pi=3.14159265358979323846264338327;
double phase = ( -2*pi /nfft ) * i;
kf_cexp(twiddles+i, phase );
}
#endif
}
/*
*
* Allocates all necessary storage space for the fft and ifft.
* The return value is a contiguous block of memory. As such,
* It can be freed with free().
* */
kiss_fft_state *opus_fft_alloc_twiddles(int nfft,void * mem,size_t * lenmem, const kiss_fft_state *base)
{
kiss_fft_state *st=NULL;
size_t memneeded = sizeof(struct kiss_fft_state); /* twiddle factors*/
if ( lenmem==NULL ) {
st = ( kiss_fft_state*)KISS_FFT_MALLOC( memneeded );
}else{
if (mem != NULL && *lenmem >= memneeded)
st = (kiss_fft_state*)mem;
*lenmem = memneeded;
}
if (st) {
opus_int16 *bitrev;
kiss_twiddle_cpx *twiddles;
st->nfft=nfft;
#ifndef FIXED_POINT
st->scale = 1.f/nfft;
#endif
if (base != NULL)
{
st->twiddles = base->twiddles;
st->shift = 0;
while (nfft<<st->shift != base->nfft && st->shift < 32)
st->shift++;
if (st->shift>=32)
goto fail;
} else {
st->twiddles = twiddles = (kiss_twiddle_cpx*)KISS_FFT_MALLOC(sizeof(kiss_twiddle_cpx)*nfft);
compute_twiddles(twiddles, nfft);
st->shift = -1;
}
if (!kf_factor(nfft,st->factors))
{
goto fail;
}
/* bitrev */
st->bitrev = bitrev = (opus_int16*)KISS_FFT_MALLOC(sizeof(opus_int16)*nfft);
if (st->bitrev==NULL)
goto fail;
compute_bitrev_table(0, bitrev, 1,1, st->factors,st);
}
return st;
fail:
opus_fft_free(st);
return NULL;
}
kiss_fft_state *opus_fft_alloc(int nfft,void * mem,size_t * lenmem )
{
return opus_fft_alloc_twiddles(nfft, mem, lenmem, NULL);
}
void opus_fft_free(const kiss_fft_state *cfg)
{
if (cfg)
{
opus_free((opus_int16*)cfg->bitrev);
if (cfg->shift < 0)
opus_free((kiss_twiddle_cpx*)cfg->twiddles);
opus_free((kiss_fft_state*)cfg);
}
}
#endif /* CUSTOM_MODES */
void opus_fft(const kiss_fft_state *st,const kiss_fft_cpx *fin,kiss_fft_cpx *fout)
{
int m2, m;
int p;
int L;
int fstride[MAXFACTORS];
int i;
int shift;
/* st->shift can be -1 */
shift = st->shift>0 ? st->shift : 0;
celt_assert2 (fin != fout, "In-place FFT not supported");
/* Bit-reverse the input */
for (i=0;i<st->nfft;i++)
{
fout[st->bitrev[i]] = fin[i];
#ifndef FIXED_POINT
fout[st->bitrev[i]].r *= st->scale;
fout[st->bitrev[i]].i *= st->scale;
#endif
}
fstride[0] = 1;
L=0;
do {
p = st->factors[2*L];
m = st->factors[2*L+1];
fstride[L+1] = fstride[L]*p;
L++;
} while(m!=1);
m = st->factors[2*L-1];
for (i=L-1;i>=0;i--)
{
if (i!=0)
m2 = st->factors[2*i-1];
else
m2 = 1;
switch (st->factors[2*i])
{
case 2:
kf_bfly2(fout,fstride[i]<<shift,st,m, fstride[i], m2);
break;
case 4:
kf_bfly4(fout,fstride[i]<<shift,st,m, fstride[i], m2);
break;
#ifndef RADIX_TWO_ONLY
case 3:
kf_bfly3(fout,fstride[i]<<shift,st,m, fstride[i], m2);
break;
case 5:
kf_bfly5(fout,fstride[i]<<shift,st,m, fstride[i], m2);
break;
#endif
}
m = m2;
}
}
void opus_ifft(const kiss_fft_state *st,const kiss_fft_cpx *fin,kiss_fft_cpx *fout)
{
int m2, m;
int p;
int L;
int fstride[MAXFACTORS];
int i;
int shift;
/* st->shift can be -1 */
shift = st->shift>0 ? st->shift : 0;
celt_assert2 (fin != fout, "In-place FFT not supported");
/* Bit-reverse the input */
for (i=0;i<st->nfft;i++)
fout[st->bitrev[i]] = fin[i];
fstride[0] = 1;
L=0;
do {
p = st->factors[2*L];
m = st->factors[2*L+1];
fstride[L+1] = fstride[L]*p;
L++;
} while(m!=1);
m = st->factors[2*L-1];
for (i=L-1;i>=0;i--)
{
if (i!=0)
m2 = st->factors[2*i-1];
else
m2 = 1;
switch (st->factors[2*i])
{
case 2:
ki_bfly2(fout,fstride[i]<<shift,st,m, fstride[i], m2);
break;
case 4:
ki_bfly4(fout,fstride[i]<<shift,st,m, fstride[i], m2);
break;
#ifndef RADIX_TWO_ONLY
case 3:
ki_bfly3(fout,fstride[i]<<shift,st,m, fstride[i], m2);
break;
case 5:
ki_bfly5(fout,fstride[i]<<shift,st,m, fstride[i], m2);
break;
#endif
}
m = m2;
}
}

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/*Copyright (c) 2003-2004, Mark Borgerding
Lots of modifications by Jean-Marc Valin
Copyright (c) 2005-2007, Xiph.Org Foundation
Copyright (c) 2008, Xiph.Org Foundation, CSIRO
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.*/
#ifndef KISS_FFT_H
#define KISS_FFT_H
#include <stdlib.h>
#include <math.h>
#include "arch.h"
#ifdef __cplusplus
extern "C" {
#endif
#ifdef USE_SIMD
# include <xmmintrin.h>
# define kiss_fft_scalar __m128
#define KISS_FFT_MALLOC(nbytes) memalign(16,nbytes)
#else
#define KISS_FFT_MALLOC opus_alloc
#endif
#ifdef FIXED_POINT
#include "arch.h"
# define kiss_fft_scalar opus_int32
# define kiss_twiddle_scalar opus_int16
#else
# ifndef kiss_fft_scalar
/* default is float */
# define kiss_fft_scalar float
# define kiss_twiddle_scalar float
# define KF_SUFFIX _celt_single
# endif
#endif
typedef struct {
kiss_fft_scalar r;
kiss_fft_scalar i;
}kiss_fft_cpx;
typedef struct {
kiss_twiddle_scalar r;
kiss_twiddle_scalar i;
}kiss_twiddle_cpx;
#define MAXFACTORS 8
/* e.g. an fft of length 128 has 4 factors
as far as kissfft is concerned
4*4*4*2
*/
typedef struct kiss_fft_state{
int nfft;
#ifndef FIXED_POINT
kiss_fft_scalar scale;
#endif
int shift;
opus_int16 factors[2*MAXFACTORS];
const opus_int16 *bitrev;
const kiss_twiddle_cpx *twiddles;
} kiss_fft_state;
/*typedef struct kiss_fft_state* kiss_fft_cfg;*/
/**
* opus_fft_alloc
*
* Initialize a FFT (or IFFT) algorithm's cfg/state buffer.
*
* typical usage: kiss_fft_cfg mycfg=opus_fft_alloc(1024,0,NULL,NULL);
*
* The return value from fft_alloc is a cfg buffer used internally
* by the fft routine or NULL.
*
* If lenmem is NULL, then opus_fft_alloc will allocate a cfg buffer using malloc.
* The returned value should be free()d when done to avoid memory leaks.
*
* The state can be placed in a user supplied buffer 'mem':
* If lenmem is not NULL and mem is not NULL and *lenmem is large enough,
* then the function places the cfg in mem and the size used in *lenmem
* and returns mem.
*
* If lenmem is not NULL and ( mem is NULL or *lenmem is not large enough),
* then the function returns NULL and places the minimum cfg
* buffer size in *lenmem.
* */
kiss_fft_state *opus_fft_alloc_twiddles(int nfft,void * mem,size_t * lenmem, const kiss_fft_state *base);
kiss_fft_state *opus_fft_alloc(int nfft,void * mem,size_t * lenmem);
/**
* opus_fft(cfg,in_out_buf)
*
* Perform an FFT on a complex input buffer.
* for a forward FFT,
* fin should be f[0] , f[1] , ... ,f[nfft-1]
* fout will be F[0] , F[1] , ... ,F[nfft-1]
* Note that each element is complex and can be accessed like
f[k].r and f[k].i
* */
void opus_fft(const kiss_fft_state *cfg,const kiss_fft_cpx *fin,kiss_fft_cpx *fout);
void opus_ifft(const kiss_fft_state *cfg,const kiss_fft_cpx *fin,kiss_fft_cpx *fout);
void opus_fft_free(const kiss_fft_state *cfg);
#ifdef __cplusplus
}
#endif
#endif

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/* Copyright (c) 2007 CSIRO
Copyright (c) 2007-2009 Xiph.Org Foundation
Written by Jean-Marc Valin */
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "laplace.h"
#include "mathops.h"
/* The minimum probability of an energy delta (out of 32768). */
#define LAPLACE_LOG_MINP (0)
#define LAPLACE_MINP (1<<LAPLACE_LOG_MINP)
/* The minimum number of guaranteed representable energy deltas (in one
direction). */
#define LAPLACE_NMIN (16)
/* When called, decay is positive and at most 11456. */
static unsigned ec_laplace_get_freq1(unsigned fs0, int decay)
{
unsigned ft;
ft = 32768 - LAPLACE_MINP*(2*LAPLACE_NMIN) - fs0;
return ft*(opus_int32)(16384-decay)>>15;
}
void ec_laplace_encode(ec_enc *enc, int *value, unsigned fs, int decay)
{
unsigned fl;
int val = *value;
fl = 0;
if (val)
{
int s;
int i;
s = -(val<0);
val = (val+s)^s;
fl = fs;
fs = ec_laplace_get_freq1(fs, decay);
/* Search the decaying part of the PDF.*/
for (i=1; fs > 0 && i < val; i++)
{
fs *= 2;
fl += fs+2*LAPLACE_MINP;
fs = (fs*(opus_int32)decay)>>15;
}
/* Everything beyond that has probability LAPLACE_MINP. */
if (!fs)
{
int di;
int ndi_max;
ndi_max = (32768-fl+LAPLACE_MINP-1)>>LAPLACE_LOG_MINP;
ndi_max = (ndi_max-s)>>1;
di = IMIN(val - i, ndi_max - 1);
fl += (2*di+1+s)*LAPLACE_MINP;
fs = IMIN(LAPLACE_MINP, 32768-fl);
*value = (i+di+s)^s;
}
else
{
fs += LAPLACE_MINP;
fl += fs&~s;
}
celt_assert(fl+fs<=32768);
celt_assert(fs>0);
}
ec_encode_bin(enc, fl, fl+fs, 15);
}
int ec_laplace_decode(ec_dec *dec, unsigned fs, int decay)
{
int val=0;
unsigned fl;
unsigned fm;
fm = ec_decode_bin(dec, 15);
fl = 0;
if (fm >= fs)
{
val++;
fl = fs;
fs = ec_laplace_get_freq1(fs, decay)+LAPLACE_MINP;
/* Search the decaying part of the PDF.*/
while(fs > LAPLACE_MINP && fm >= fl+2*fs)
{
fs *= 2;
fl += fs;
fs = ((fs-2*LAPLACE_MINP)*(opus_int32)decay)>>15;
fs += LAPLACE_MINP;
val++;
}
/* Everything beyond that has probability LAPLACE_MINP. */
if (fs <= LAPLACE_MINP)
{
int di;
di = (fm-fl)>>(LAPLACE_LOG_MINP+1);
val += di;
fl += 2*di*LAPLACE_MINP;
}
if (fm < fl+fs)
val = -val;
else
fl += fs;
}
celt_assert(fl<32768);
celt_assert(fs>0);
celt_assert(fl<=fm);
celt_assert(fm<IMIN(fl+fs,32768));
ec_dec_update(dec, fl, IMIN(fl+fs,32768), 32768);
return val;
}

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/* Copyright (c) 2007 CSIRO
Copyright (c) 2007-2009 Xiph.Org Foundation
Written by Jean-Marc Valin */
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "entenc.h"
#include "entdec.h"
/** Encode a value that is assumed to be the realisation of a
Laplace-distributed random process
@param enc Entropy encoder state
@param value Value to encode
@param fs Probability of 0, multiplied by 32768
@param decay Probability of the value +/- 1, multiplied by 16384
*/
void ec_laplace_encode(ec_enc *enc, int *value, unsigned fs, int decay);
/** Decode a value that is assumed to be the realisation of a
Laplace-distributed random process
@param dec Entropy decoder state
@param fs Probability of 0, multiplied by 32768
@param decay Probability of the value +/- 1, multiplied by 16384
@return Value decoded
*/
int ec_laplace_decode(ec_dec *dec, unsigned fs, int decay);

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/* Copyright (c) 2002-2008 Jean-Marc Valin
Copyright (c) 2007-2008 CSIRO
Copyright (c) 2007-2009 Xiph.Org Foundation
Written by Jean-Marc Valin */
/**
@file mathops.h
@brief Various math functions
*/
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "mathops.h"
/*Compute floor(sqrt(_val)) with exact arithmetic.
This has been tested on all possible 32-bit inputs.*/
unsigned isqrt32(opus_uint32 _val){
unsigned b;
unsigned g;
int bshift;
/*Uses the second method from
http://www.azillionmonkeys.com/qed/sqroot.html
The main idea is to search for the largest binary digit b such that
(g+b)*(g+b) <= _val, and add it to the solution g.*/
g=0;
bshift=(EC_ILOG(_val)-1)>>1;
b=1U<<bshift;
do{
opus_uint32 t;
t=(((opus_uint32)g<<1)+b)<<bshift;
if(t<=_val){
g+=b;
_val-=t;
}
b>>=1;
bshift--;
}
while(bshift>=0);
return g;
}
#ifdef FIXED_POINT
opus_val32 frac_div32(opus_val32 a, opus_val32 b)
{
opus_val16 rcp;
opus_val32 result, rem;
int shift = celt_ilog2(b)-29;
a = VSHR32(a,shift);
b = VSHR32(b,shift);
/* 16-bit reciprocal */
rcp = ROUND16(celt_rcp(ROUND16(b,16)),3);
result = MULT16_32_Q15(rcp, a);
rem = PSHR32(a,2)-MULT32_32_Q31(result, b);
result = ADD32(result, SHL32(MULT16_32_Q15(rcp, rem),2));
if (result >= 536870912) /* 2^29 */
return 2147483647; /* 2^31 - 1 */
else if (result <= -536870912) /* -2^29 */
return -2147483647; /* -2^31 */
else
return SHL32(result, 2);
}
/** Reciprocal sqrt approximation in the range [0.25,1) (Q16 in, Q14 out) */
opus_val16 celt_rsqrt_norm(opus_val32 x)
{
opus_val16 n;
opus_val16 r;
opus_val16 r2;
opus_val16 y;
/* Range of n is [-16384,32767] ([-0.5,1) in Q15). */
n = x-32768;
/* Get a rough initial guess for the root.
The optimal minimax quadratic approximation (using relative error) is
r = 1.437799046117536+n*(-0.823394375837328+n*0.4096419668459485).
Coefficients here, and the final result r, are Q14.*/
r = ADD16(23557, MULT16_16_Q15(n, ADD16(-13490, MULT16_16_Q15(n, 6713))));
/* We want y = x*r*r-1 in Q15, but x is 32-bit Q16 and r is Q14.
We can compute the result from n and r using Q15 multiplies with some
adjustment, carefully done to avoid overflow.
Range of y is [-1564,1594]. */
r2 = MULT16_16_Q15(r, r);
y = SHL16(SUB16(ADD16(MULT16_16_Q15(r2, n), r2), 16384), 1);
/* Apply a 2nd-order Householder iteration: r += r*y*(y*0.375-0.5).
This yields the Q14 reciprocal square root of the Q16 x, with a maximum
relative error of 1.04956E-4, a (relative) RMSE of 2.80979E-5, and a
peak absolute error of 2.26591/16384. */
return ADD16(r, MULT16_16_Q15(r, MULT16_16_Q15(y,
SUB16(MULT16_16_Q15(y, 12288), 16384))));
}
/** Sqrt approximation (QX input, QX/2 output) */
opus_val32 celt_sqrt(opus_val32 x)
{
int k;
opus_val16 n;
opus_val32 rt;
static const opus_val16 C[5] = {23175, 11561, -3011, 1699, -664};
if (x==0)
return 0;
else if (x>=1073741824)
return 32767;
k = (celt_ilog2(x)>>1)-7;
x = VSHR32(x, 2*k);
n = x-32768;
rt = ADD16(C[0], MULT16_16_Q15(n, ADD16(C[1], MULT16_16_Q15(n, ADD16(C[2],
MULT16_16_Q15(n, ADD16(C[3], MULT16_16_Q15(n, (C[4])))))))));
rt = VSHR32(rt,7-k);
return rt;
}
#define L1 32767
#define L2 -7651
#define L3 8277
#define L4 -626
static OPUS_INLINE opus_val16 _celt_cos_pi_2(opus_val16 x)
{
opus_val16 x2;
x2 = MULT16_16_P15(x,x);
return ADD16(1,MIN16(32766,ADD32(SUB16(L1,x2), MULT16_16_P15(x2, ADD32(L2, MULT16_16_P15(x2, ADD32(L3, MULT16_16_P15(L4, x2
))))))));
}
#undef L1
#undef L2
#undef L3
#undef L4
opus_val16 celt_cos_norm(opus_val32 x)
{
x = x&0x0001ffff;
if (x>SHL32(EXTEND32(1), 16))
x = SUB32(SHL32(EXTEND32(1), 17),x);
if (x&0x00007fff)
{
if (x<SHL32(EXTEND32(1), 15))
{
return _celt_cos_pi_2(EXTRACT16(x));
} else {
return NEG32(_celt_cos_pi_2(EXTRACT16(65536-x)));
}
} else {
if (x&0x0000ffff)
return 0;
else if (x&0x0001ffff)
return -32767;
else
return 32767;
}
}
/** Reciprocal approximation (Q15 input, Q16 output) */
opus_val32 celt_rcp(opus_val32 x)
{
int i;
opus_val16 n;
opus_val16 r;
celt_assert2(x>0, "celt_rcp() only defined for positive values");
i = celt_ilog2(x);
/* n is Q15 with range [0,1). */
n = VSHR32(x,i-15)-32768;
/* Start with a linear approximation:
r = 1.8823529411764706-0.9411764705882353*n.
The coefficients and the result are Q14 in the range [15420,30840].*/
r = ADD16(30840, MULT16_16_Q15(-15420, n));
/* Perform two Newton iterations:
r -= r*((r*n)-1.Q15)
= r*((r*n)+(r-1.Q15)). */
r = SUB16(r, MULT16_16_Q15(r,
ADD16(MULT16_16_Q15(r, n), ADD16(r, -32768))));
/* We subtract an extra 1 in the second iteration to avoid overflow; it also
neatly compensates for truncation error in the rest of the process. */
r = SUB16(r, ADD16(1, MULT16_16_Q15(r,
ADD16(MULT16_16_Q15(r, n), ADD16(r, -32768)))));
/* r is now the Q15 solution to 2/(n+1), with a maximum relative error
of 7.05346E-5, a (relative) RMSE of 2.14418E-5, and a peak absolute
error of 1.24665/32768. */
return VSHR32(EXTEND32(r),i-16);
}
#endif

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/* Copyright (c) 2002-2008 Jean-Marc Valin
Copyright (c) 2007-2008 CSIRO
Copyright (c) 2007-2009 Xiph.Org Foundation
Written by Jean-Marc Valin */
/**
@file mathops.h
@brief Various math functions
*/
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef MATHOPS_H
#define MATHOPS_H
#include "arch.h"
#include "entcode.h"
#include "os_support.h"
/* Multiplies two 16-bit fractional values. Bit-exactness of this macro is important */
#define FRAC_MUL16(a,b) ((16384+((opus_int32)(opus_int16)(a)*(opus_int16)(b)))>>15)
unsigned isqrt32(opus_uint32 _val);
#ifndef OVERRIDE_CELT_MAXABS16
static OPUS_INLINE opus_val32 celt_maxabs16(const opus_val16 *x, int len)
{
int i;
opus_val16 maxval = 0;
opus_val16 minval = 0;
for (i=0;i<len;i++)
{
maxval = MAX16(maxval, x[i]);
minval = MIN16(minval, x[i]);
}
return MAX32(EXTEND32(maxval),-EXTEND32(minval));
}
#endif
#ifndef OVERRIDE_CELT_MAXABS32
#ifdef FIXED_POINT
static OPUS_INLINE opus_val32 celt_maxabs32(const opus_val32 *x, int len)
{
int i;
opus_val32 maxval = 0;
opus_val32 minval = 0;
for (i=0;i<len;i++)
{
maxval = MAX32(maxval, x[i]);
minval = MIN32(minval, x[i]);
}
return MAX32(maxval, -minval);
}
#else
#define celt_maxabs32(x,len) celt_maxabs16(x,len)
#endif
#endif
#ifndef FIXED_POINT
#define PI 3.141592653f
#define celt_sqrt(x) ((float)sqrt(x))
#define celt_rsqrt(x) (1.f/celt_sqrt(x))
#define celt_rsqrt_norm(x) (celt_rsqrt(x))
#define celt_cos_norm(x) ((float)cos((.5f*PI)*(x)))
#define celt_rcp(x) (1.f/(x))
#define celt_div(a,b) ((a)/(b))
#define frac_div32(a,b) ((float)(a)/(b))
#ifdef FLOAT_APPROX
/* Note: This assumes radix-2 floating point with the exponent at bits 23..30 and an offset of 127
denorm, +/- inf and NaN are *not* handled */
/** Base-2 log approximation (log2(x)). */
static OPUS_INLINE float celt_log2(float x)
{
int integer;
float frac;
union {
float f;
opus_uint32 i;
} in;
in.f = x;
integer = (in.i>>23)-127;
in.i -= integer<<23;
frac = in.f - 1.5f;
frac = -0.41445418f + frac*(0.95909232f
+ frac*(-0.33951290f + frac*0.16541097f));
return 1+integer+frac;
}
/** Base-2 exponential approximation (2^x). */
static OPUS_INLINE float celt_exp2(float x)
{
int integer;
float frac;
union {
float f;
opus_uint32 i;
} res;
integer = floor(x);
if (integer < -50)
return 0;
frac = x-integer;
/* K0 = 1, K1 = log(2), K2 = 3-4*log(2), K3 = 3*log(2) - 2 */
res.f = 0.99992522f + frac * (0.69583354f
+ frac * (0.22606716f + 0.078024523f*frac));
res.i = (res.i + (integer<<23)) & 0x7fffffff;
return res.f;
}
#else
#define celt_log2(x) ((float)(1.442695040888963387*log(x)))
#define celt_exp2(x) ((float)exp(0.6931471805599453094*(x)))
#endif
#endif
#ifdef FIXED_POINT
#include "os_support.h"
#ifndef OVERRIDE_CELT_ILOG2
/** Integer log in base2. Undefined for zero and negative numbers */
static OPUS_INLINE opus_int16 celt_ilog2(opus_int32 x)
{
celt_assert2(x>0, "celt_ilog2() only defined for strictly positive numbers");
return EC_ILOG(x)-1;
}
#endif
/** Integer log in base2. Defined for zero, but not for negative numbers */
static OPUS_INLINE opus_int16 celt_zlog2(opus_val32 x)
{
return x <= 0 ? 0 : celt_ilog2(x);
}
opus_val16 celt_rsqrt_norm(opus_val32 x);
opus_val32 celt_sqrt(opus_val32 x);
opus_val16 celt_cos_norm(opus_val32 x);
/** Base-2 logarithm approximation (log2(x)). (Q14 input, Q10 output) */
static OPUS_INLINE opus_val16 celt_log2(opus_val32 x)
{
int i;
opus_val16 n, frac;
/* -0.41509302963303146, 0.9609890551383969, -0.31836011537636605,
0.15530808010959576, -0.08556153059057618 */
static const opus_val16 C[5] = {-6801+(1<<(13-DB_SHIFT)), 15746, -5217, 2545, -1401};
if (x==0)
return -32767;
i = celt_ilog2(x);
n = VSHR32(x,i-15)-32768-16384;
frac = ADD16(C[0], MULT16_16_Q15(n, ADD16(C[1], MULT16_16_Q15(n, ADD16(C[2], MULT16_16_Q15(n, ADD16(C[3], MULT16_16_Q15(n, C[4]))))))));
return SHL16(i-13,DB_SHIFT)+SHR16(frac,14-DB_SHIFT);
}
/*
K0 = 1
K1 = log(2)
K2 = 3-4*log(2)
K3 = 3*log(2) - 2
*/
#define D0 16383
#define D1 22804
#define D2 14819
#define D3 10204
static OPUS_INLINE opus_val32 celt_exp2_frac(opus_val16 x)
{
opus_val16 frac;
frac = SHL16(x, 4);
return ADD16(D0, MULT16_16_Q15(frac, ADD16(D1, MULT16_16_Q15(frac, ADD16(D2 , MULT16_16_Q15(D3,frac))))));
}
/** Base-2 exponential approximation (2^x). (Q10 input, Q16 output) */
static OPUS_INLINE opus_val32 celt_exp2(opus_val16 x)
{
int integer;
opus_val16 frac;
integer = SHR16(x,10);
if (integer>14)
return 0x7f000000;
else if (integer < -15)
return 0;
frac = celt_exp2_frac(x-SHL16(integer,10));
return VSHR32(EXTEND32(frac), -integer-2);
}
opus_val32 celt_rcp(opus_val32 x);
#define celt_div(a,b) MULT32_32_Q31((opus_val32)(a),celt_rcp(b))
opus_val32 frac_div32(opus_val32 a, opus_val32 b);
#define M1 32767
#define M2 -21
#define M3 -11943
#define M4 4936
/* Atan approximation using a 4th order polynomial. Input is in Q15 format
and normalized by pi/4. Output is in Q15 format */
static OPUS_INLINE opus_val16 celt_atan01(opus_val16 x)
{
return MULT16_16_P15(x, ADD32(M1, MULT16_16_P15(x, ADD32(M2, MULT16_16_P15(x, ADD32(M3, MULT16_16_P15(M4, x)))))));
}
#undef M1
#undef M2
#undef M3
#undef M4
/* atan2() approximation valid for positive input values */
static OPUS_INLINE opus_val16 celt_atan2p(opus_val16 y, opus_val16 x)
{
if (y < x)
{
opus_val32 arg;
arg = celt_div(SHL32(EXTEND32(y),15),x);
if (arg >= 32767)
arg = 32767;
return SHR16(celt_atan01(EXTRACT16(arg)),1);
} else {
opus_val32 arg;
arg = celt_div(SHL32(EXTEND32(x),15),y);
if (arg >= 32767)
arg = 32767;
return 25736-SHR16(celt_atan01(EXTRACT16(arg)),1);
}
}
#endif /* FIXED_POINT */
#endif /* MATHOPS_H */

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/* Copyright (c) 2007-2008 CSIRO
Copyright (c) 2007-2008 Xiph.Org Foundation
Written by Jean-Marc Valin */
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/* This is a simple MDCT implementation that uses a N/4 complex FFT
to do most of the work. It should be relatively straightforward to
plug in pretty much and FFT here.
This replaces the Vorbis FFT (and uses the exact same API), which
was a bit too messy and that was ending up duplicating code
(might as well use the same FFT everywhere).
The algorithm is similar to (and inspired from) Fabrice Bellard's
MDCT implementation in FFMPEG, but has differences in signs, ordering
and scaling in many places.
*/
#ifndef SKIP_CONFIG_H
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#endif
#include "mdct.h"
#include "kiss_fft.h"
#include "_kiss_fft_guts.h"
#include <math.h>
#include "os_support.h"
#include "mathops.h"
#include "stack_alloc.h"
#ifdef CUSTOM_MODES
int clt_mdct_init(mdct_lookup *l,int N, int maxshift)
{
int i;
int N4;
kiss_twiddle_scalar *trig;
#if defined(FIXED_POINT)
int N2=N>>1;
#endif
l->n = N;
N4 = N>>2;
l->maxshift = maxshift;
for (i=0;i<=maxshift;i++)
{
if (i==0)
l->kfft[i] = opus_fft_alloc(N>>2>>i, 0, 0);
else
l->kfft[i] = opus_fft_alloc_twiddles(N>>2>>i, 0, 0, l->kfft[0]);
#ifndef ENABLE_TI_DSPLIB55
if (l->kfft[i]==NULL)
return 0;
#endif
}
l->trig = trig = (kiss_twiddle_scalar*)opus_alloc((N4+1)*sizeof(kiss_twiddle_scalar));
if (l->trig==NULL)
return 0;
/* We have enough points that sine isn't necessary */
#if defined(FIXED_POINT)
for (i=0;i<=N4;i++)
trig[i] = TRIG_UPSCALE*celt_cos_norm(DIV32(ADD32(SHL32(EXTEND32(i),17),N2),N));
#else
for (i=0;i<=N4;i++)
trig[i] = (kiss_twiddle_scalar)cos(2*PI*i/N);
#endif
return 1;
}
void clt_mdct_clear(mdct_lookup *l)
{
int i;
for (i=0;i<=l->maxshift;i++)
opus_fft_free(l->kfft[i]);
opus_free((kiss_twiddle_scalar*)l->trig);
}
#endif /* CUSTOM_MODES */
/* Forward MDCT trashes the input array */
void clt_mdct_forward(const mdct_lookup *l, kiss_fft_scalar *in, kiss_fft_scalar * OPUS_RESTRICT out,
const opus_val16 *window, int overlap, int shift, int stride)
{
int i;
int N, N2, N4;
kiss_twiddle_scalar sine;
VARDECL(kiss_fft_scalar, f);
VARDECL(kiss_fft_scalar, f2);
SAVE_STACK;
N = l->n;
N >>= shift;
N2 = N>>1;
N4 = N>>2;
ALLOC(f, N2, kiss_fft_scalar);
ALLOC(f2, N2, kiss_fft_scalar);
/* sin(x) ~= x here */
#ifdef FIXED_POINT
sine = TRIG_UPSCALE*(QCONST16(0.7853981f, 15)+N2)/N;
#else
sine = (kiss_twiddle_scalar)2*PI*(.125f)/N;
#endif
/* Consider the input to be composed of four blocks: [a, b, c, d] */
/* Window, shuffle, fold */
{
/* Temp pointers to make it really clear to the compiler what we're doing */
const kiss_fft_scalar * OPUS_RESTRICT xp1 = in+(overlap>>1);
const kiss_fft_scalar * OPUS_RESTRICT xp2 = in+N2-1+(overlap>>1);
kiss_fft_scalar * OPUS_RESTRICT yp = f;
const opus_val16 * OPUS_RESTRICT wp1 = window+(overlap>>1);
const opus_val16 * OPUS_RESTRICT wp2 = window+(overlap>>1)-1;
for(i=0;i<((overlap+3)>>2);i++)
{
/* Real part arranged as -d-cR, Imag part arranged as -b+aR*/
*yp++ = MULT16_32_Q15(*wp2, xp1[N2]) + MULT16_32_Q15(*wp1,*xp2);
*yp++ = MULT16_32_Q15(*wp1, *xp1) - MULT16_32_Q15(*wp2, xp2[-N2]);
xp1+=2;
xp2-=2;
wp1+=2;
wp2-=2;
}
wp1 = window;
wp2 = window+overlap-1;
for(;i<N4-((overlap+3)>>2);i++)
{
/* Real part arranged as a-bR, Imag part arranged as -c-dR */
*yp++ = *xp2;
*yp++ = *xp1;
xp1+=2;
xp2-=2;
}
for(;i<N4;i++)
{
/* Real part arranged as a-bR, Imag part arranged as -c-dR */
*yp++ = -MULT16_32_Q15(*wp1, xp1[-N2]) + MULT16_32_Q15(*wp2, *xp2);
*yp++ = MULT16_32_Q15(*wp2, *xp1) + MULT16_32_Q15(*wp1, xp2[N2]);
xp1+=2;
xp2-=2;
wp1+=2;
wp2-=2;
}
}
/* Pre-rotation */
{
kiss_fft_scalar * OPUS_RESTRICT yp = f;
const kiss_twiddle_scalar *t = &l->trig[0];
for(i=0;i<N4;i++)
{
kiss_fft_scalar re, im, yr, yi;
re = yp[0];
im = yp[1];
yr = -S_MUL(re,t[i<<shift]) - S_MUL(im,t[(N4-i)<<shift]);
yi = -S_MUL(im,t[i<<shift]) + S_MUL(re,t[(N4-i)<<shift]);
/* works because the cos is nearly one */
*yp++ = yr + S_MUL(yi,sine);
*yp++ = yi - S_MUL(yr,sine);
}
}
/* N/4 complex FFT, down-scales by 4/N */
opus_fft(l->kfft[shift], (kiss_fft_cpx *)f, (kiss_fft_cpx *)f2);
/* Post-rotate */
{
/* Temp pointers to make it really clear to the compiler what we're doing */
const kiss_fft_scalar * OPUS_RESTRICT fp = f2;
kiss_fft_scalar * OPUS_RESTRICT yp1 = out;
kiss_fft_scalar * OPUS_RESTRICT yp2 = out+stride*(N2-1);
const kiss_twiddle_scalar *t = &l->trig[0];
/* Temp pointers to make it really clear to the compiler what we're doing */
for(i=0;i<N4;i++)
{
kiss_fft_scalar yr, yi;
yr = S_MUL(fp[1],t[(N4-i)<<shift]) + S_MUL(fp[0],t[i<<shift]);
yi = S_MUL(fp[0],t[(N4-i)<<shift]) - S_MUL(fp[1],t[i<<shift]);
/* works because the cos is nearly one */
*yp1 = yr - S_MUL(yi,sine);
*yp2 = yi + S_MUL(yr,sine);;
fp += 2;
yp1 += 2*stride;
yp2 -= 2*stride;
}
}
RESTORE_STACK;
}
void clt_mdct_backward(const mdct_lookup *l, kiss_fft_scalar *in, kiss_fft_scalar * OPUS_RESTRICT out,
const opus_val16 * OPUS_RESTRICT window, int overlap, int shift, int stride)
{
int i;
int N, N2, N4;
kiss_twiddle_scalar sine;
VARDECL(kiss_fft_scalar, f2);
SAVE_STACK;
N = l->n;
N >>= shift;
N2 = N>>1;
N4 = N>>2;
ALLOC(f2, N2, kiss_fft_scalar);
/* sin(x) ~= x here */
#ifdef FIXED_POINT
sine = TRIG_UPSCALE*(QCONST16(0.7853981f, 15)+N2)/N;
#else
sine = (kiss_twiddle_scalar)2*PI*(.125f)/N;
#endif
/* Pre-rotate */
{
/* Temp pointers to make it really clear to the compiler what we're doing */
const kiss_fft_scalar * OPUS_RESTRICT xp1 = in;
const kiss_fft_scalar * OPUS_RESTRICT xp2 = in+stride*(N2-1);
kiss_fft_scalar * OPUS_RESTRICT yp = f2;
const kiss_twiddle_scalar *t = &l->trig[0];
for(i=0;i<N4;i++)
{
kiss_fft_scalar yr, yi;
yr = -S_MUL(*xp2, t[i<<shift]) + S_MUL(*xp1,t[(N4-i)<<shift]);
yi = -S_MUL(*xp2, t[(N4-i)<<shift]) - S_MUL(*xp1,t[i<<shift]);
/* works because the cos is nearly one */
*yp++ = yr - S_MUL(yi,sine);
*yp++ = yi + S_MUL(yr,sine);
xp1+=2*stride;
xp2-=2*stride;
}
}
/* Inverse N/4 complex FFT. This one should *not* downscale even in fixed-point */
opus_ifft(l->kfft[shift], (kiss_fft_cpx *)f2, (kiss_fft_cpx *)(out+(overlap>>1)));
/* Post-rotate and de-shuffle from both ends of the buffer at once to make
it in-place. */
{
kiss_fft_scalar * OPUS_RESTRICT yp0 = out+(overlap>>1);
kiss_fft_scalar * OPUS_RESTRICT yp1 = out+(overlap>>1)+N2-2;
const kiss_twiddle_scalar *t = &l->trig[0];
/* Loop to (N4+1)>>1 to handle odd N4. When N4 is odd, the
middle pair will be computed twice. */
for(i=0;i<(N4+1)>>1;i++)
{
kiss_fft_scalar re, im, yr, yi;
kiss_twiddle_scalar t0, t1;
re = yp0[0];
im = yp0[1];
t0 = t[i<<shift];
t1 = t[(N4-i)<<shift];
/* We'd scale up by 2 here, but instead it's done when mixing the windows */
yr = S_MUL(re,t0) - S_MUL(im,t1);
yi = S_MUL(im,t0) + S_MUL(re,t1);
re = yp1[0];
im = yp1[1];
/* works because the cos is nearly one */
yp0[0] = -(yr - S_MUL(yi,sine));
yp1[1] = yi + S_MUL(yr,sine);
t0 = t[(N4-i-1)<<shift];
t1 = t[(i+1)<<shift];
/* We'd scale up by 2 here, but instead it's done when mixing the windows */
yr = S_MUL(re,t0) - S_MUL(im,t1);
yi = S_MUL(im,t0) + S_MUL(re,t1);
/* works because the cos is nearly one */
yp1[0] = -(yr - S_MUL(yi,sine));
yp0[1] = yi + S_MUL(yr,sine);
yp0 += 2;
yp1 -= 2;
}
}
/* Mirror on both sides for TDAC */
{
kiss_fft_scalar * OPUS_RESTRICT xp1 = out+overlap-1;
kiss_fft_scalar * OPUS_RESTRICT yp1 = out;
const opus_val16 * OPUS_RESTRICT wp1 = window;
const opus_val16 * OPUS_RESTRICT wp2 = window+overlap-1;
for(i = 0; i < overlap/2; i++)
{
kiss_fft_scalar x1, x2;
x1 = *xp1;
x2 = *yp1;
*yp1++ = MULT16_32_Q15(*wp2, x2) - MULT16_32_Q15(*wp1, x1);
*xp1-- = MULT16_32_Q15(*wp1, x2) + MULT16_32_Q15(*wp2, x1);
wp1++;
wp2--;
}
}
RESTORE_STACK;
}

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/* Copyright (c) 2007-2008 CSIRO
Copyright (c) 2007-2008 Xiph.Org Foundation
Written by Jean-Marc Valin */
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/* This is a simple MDCT implementation that uses a N/4 complex FFT
to do most of the work. It should be relatively straightforward to
plug in pretty much and FFT here.
This replaces the Vorbis FFT (and uses the exact same API), which
was a bit too messy and that was ending up duplicating code
(might as well use the same FFT everywhere).
The algorithm is similar to (and inspired from) Fabrice Bellard's
MDCT implementation in FFMPEG, but has differences in signs, ordering
and scaling in many places.
*/
#ifndef MDCT_H
#define MDCT_H
#include "opus_defines.h"
#include "kiss_fft.h"
#include "arch.h"
typedef struct {
int n;
int maxshift;
const kiss_fft_state *kfft[4];
const kiss_twiddle_scalar * OPUS_RESTRICT trig;
} mdct_lookup;
int clt_mdct_init(mdct_lookup *l,int N, int maxshift);
void clt_mdct_clear(mdct_lookup *l);
/** Compute a forward MDCT and scale by 4/N, trashes the input array */
void clt_mdct_forward(const mdct_lookup *l, kiss_fft_scalar *in,
kiss_fft_scalar * OPUS_RESTRICT out,
const opus_val16 *window, int overlap, int shift, int stride);
/** Compute a backward MDCT (no scaling) and performs weighted overlap-add
(scales implicitly by 1/2) */
void clt_mdct_backward(const mdct_lookup *l, kiss_fft_scalar *in,
kiss_fft_scalar * OPUS_RESTRICT out,
const opus_val16 * OPUS_RESTRICT window, int overlap, int shift, int stride);
#endif

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/* Copyright (c) 2001-2008 Timothy B. Terriberry
Copyright (c) 2008-2009 Xiph.Org Foundation */
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#if !defined(_mfrngcode_H)
# define _mfrngcode_H (1)
# include "entcode.h"
/*Constants used by the entropy encoder/decoder.*/
/*The number of bits to output at a time.*/
# define EC_SYM_BITS (8)
/*The total number of bits in each of the state registers.*/
# define EC_CODE_BITS (32)
/*The maximum symbol value.*/
# define EC_SYM_MAX ((1U<<EC_SYM_BITS)-1)
/*Bits to shift by to move a symbol into the high-order position.*/
# define EC_CODE_SHIFT (EC_CODE_BITS-EC_SYM_BITS-1)
/*Carry bit of the high-order range symbol.*/
# define EC_CODE_TOP (((opus_uint32)1U)<<(EC_CODE_BITS-1))
/*Low-order bit of the high-order range symbol.*/
# define EC_CODE_BOT (EC_CODE_TOP>>EC_SYM_BITS)
/*The number of bits available for the last, partial symbol in the code field.*/
# define EC_CODE_EXTRA ((EC_CODE_BITS-2)%EC_SYM_BITS+1)
#endif

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src/engine/external/opus/celt/modes.c vendored Normal file
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/* Copyright (c) 2007-2008 CSIRO
Copyright (c) 2007-2009 Xiph.Org Foundation
Copyright (c) 2008 Gregory Maxwell
Written by Jean-Marc Valin and Gregory Maxwell */
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "celt.h"
#include "modes.h"
#include "rate.h"
#include "os_support.h"
#include "stack_alloc.h"
#include "quant_bands.h"
static const opus_int16 eband5ms[] = {
/*0 200 400 600 800 1k 1.2 1.4 1.6 2k 2.4 2.8 3.2 4k 4.8 5.6 6.8 8k 9.6 12k 15.6 */
0, 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 16, 20, 24, 28, 34, 40, 48, 60, 78, 100
};
/* Alternate tuning (partially derived from Vorbis) */
#define BITALLOC_SIZE 11
/* Bit allocation table in units of 1/32 bit/sample (0.1875 dB SNR) */
static const unsigned char band_allocation[] = {
/*0 200 400 600 800 1k 1.2 1.4 1.6 2k 2.4 2.8 3.2 4k 4.8 5.6 6.8 8k 9.6 12k 15.6 */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
90, 80, 75, 69, 63, 56, 49, 40, 34, 29, 20, 18, 10, 0, 0, 0, 0, 0, 0, 0, 0,
110,100, 90, 84, 78, 71, 65, 58, 51, 45, 39, 32, 26, 20, 12, 0, 0, 0, 0, 0, 0,
118,110,103, 93, 86, 80, 75, 70, 65, 59, 53, 47, 40, 31, 23, 15, 4, 0, 0, 0, 0,
126,119,112,104, 95, 89, 83, 78, 72, 66, 60, 54, 47, 39, 32, 25, 17, 12, 1, 0, 0,
134,127,120,114,103, 97, 91, 85, 78, 72, 66, 60, 54, 47, 41, 35, 29, 23, 16, 10, 1,
144,137,130,124,113,107,101, 95, 88, 82, 76, 70, 64, 57, 51, 45, 39, 33, 26, 15, 1,
152,145,138,132,123,117,111,105, 98, 92, 86, 80, 74, 67, 61, 55, 49, 43, 36, 20, 1,
162,155,148,142,133,127,121,115,108,102, 96, 90, 84, 77, 71, 65, 59, 53, 46, 30, 1,
172,165,158,152,143,137,131,125,118,112,106,100, 94, 87, 81, 75, 69, 63, 56, 45, 20,
200,200,200,200,200,200,200,200,198,193,188,183,178,173,168,163,158,153,148,129,104,
};
#ifndef CUSTOM_MODES_ONLY
#ifdef FIXED_POINT
#include "static_modes_fixed.h"
#else
#include "static_modes_float.h"
#endif
#endif /* CUSTOM_MODES_ONLY */
#ifndef M_PI
#define M_PI 3.141592653
#endif
#ifdef CUSTOM_MODES
/* Defining 25 critical bands for the full 0-20 kHz audio bandwidth
Taken from http://ccrma.stanford.edu/~jos/bbt/Bark_Frequency_Scale.html */
#define BARK_BANDS 25
static const opus_int16 bark_freq[BARK_BANDS+1] = {
0, 100, 200, 300, 400,
510, 630, 770, 920, 1080,
1270, 1480, 1720, 2000, 2320,
2700, 3150, 3700, 4400, 5300,
6400, 7700, 9500, 12000, 15500,
20000};
static opus_int16 *compute_ebands(opus_int32 Fs, int frame_size, int res, int *nbEBands)
{
opus_int16 *eBands;
int i, j, lin, low, high, nBark, offset=0;
/* All modes that have 2.5 ms short blocks use the same definition */
if (Fs == 400*(opus_int32)frame_size)
{
*nbEBands = sizeof(eband5ms)/sizeof(eband5ms[0])-1;
eBands = opus_alloc(sizeof(opus_int16)*(*nbEBands+1));
for (i=0;i<*nbEBands+1;i++)
eBands[i] = eband5ms[i];
return eBands;
}
/* Find the number of critical bands supported by our sampling rate */
for (nBark=1;nBark<BARK_BANDS;nBark++)
if (bark_freq[nBark+1]*2 >= Fs)
break;
/* Find where the linear part ends (i.e. where the spacing is more than min_width */
for (lin=0;lin<nBark;lin++)
if (bark_freq[lin+1]-bark_freq[lin] >= res)
break;
low = (bark_freq[lin]+res/2)/res;
high = nBark-lin;
*nbEBands = low+high;
eBands = opus_alloc(sizeof(opus_int16)*(*nbEBands+2));
if (eBands==NULL)
return NULL;
/* Linear spacing (min_width) */
for (i=0;i<low;i++)
eBands[i] = i;
if (low>0)
offset = eBands[low-1]*res - bark_freq[lin-1];
/* Spacing follows critical bands */
for (i=0;i<high;i++)
{
int target = bark_freq[lin+i];
/* Round to an even value */
eBands[i+low] = (target+offset/2+res)/(2*res)*2;
offset = eBands[i+low]*res - target;
}
/* Enforce the minimum spacing at the boundary */
for (i=0;i<*nbEBands;i++)
if (eBands[i] < i)
eBands[i] = i;
/* Round to an even value */
eBands[*nbEBands] = (bark_freq[nBark]+res)/(2*res)*2;
if (eBands[*nbEBands] > frame_size)
eBands[*nbEBands] = frame_size;
for (i=1;i<*nbEBands-1;i++)
{
if (eBands[i+1]-eBands[i] < eBands[i]-eBands[i-1])
{
eBands[i] -= (2*eBands[i]-eBands[i-1]-eBands[i+1])/2;
}
}
/* Remove any empty bands. */
for (i=j=0;i<*nbEBands;i++)
if(eBands[i+1]>eBands[j])
eBands[++j]=eBands[i+1];
*nbEBands=j;
for (i=1;i<*nbEBands;i++)
{
/* Every band must be smaller than the last band. */
celt_assert(eBands[i]-eBands[i-1]<=eBands[*nbEBands]-eBands[*nbEBands-1]);
/* Each band must be no larger than twice the size of the previous one. */
celt_assert(eBands[i+1]-eBands[i]<=2*(eBands[i]-eBands[i-1]));
}
return eBands;
}
static void compute_allocation_table(CELTMode *mode)
{
int i, j;
unsigned char *allocVectors;
int maxBands = sizeof(eband5ms)/sizeof(eband5ms[0])-1;
mode->nbAllocVectors = BITALLOC_SIZE;
allocVectors = opus_alloc(sizeof(unsigned char)*(BITALLOC_SIZE*mode->nbEBands));
if (allocVectors==NULL)
return;
/* Check for standard mode */
if (mode->Fs == 400*(opus_int32)mode->shortMdctSize)
{
for (i=0;i<BITALLOC_SIZE*mode->nbEBands;i++)
allocVectors[i] = band_allocation[i];
mode->allocVectors = allocVectors;
return;
}
/* If not the standard mode, interpolate */
/* Compute per-codec-band allocation from per-critical-band matrix */
for (i=0;i<BITALLOC_SIZE;i++)
{
for (j=0;j<mode->nbEBands;j++)
{
int k;
for (k=0;k<maxBands;k++)
{
if (400*(opus_int32)eband5ms[k] > mode->eBands[j]*(opus_int32)mode->Fs/mode->shortMdctSize)
break;
}
if (k>maxBands-1)
allocVectors[i*mode->nbEBands+j] = band_allocation[i*maxBands + maxBands-1];
else {
opus_int32 a0, a1;
a1 = mode->eBands[j]*(opus_int32)mode->Fs/mode->shortMdctSize - 400*(opus_int32)eband5ms[k-1];
a0 = 400*(opus_int32)eband5ms[k] - mode->eBands[j]*(opus_int32)mode->Fs/mode->shortMdctSize;
allocVectors[i*mode->nbEBands+j] = (a0*band_allocation[i*maxBands+k-1]
+ a1*band_allocation[i*maxBands+k])/(a0+a1);
}
}
}
/*printf ("\n");
for (i=0;i<BITALLOC_SIZE;i++)
{
for (j=0;j<mode->nbEBands;j++)
printf ("%d ", allocVectors[i*mode->nbEBands+j]);
printf ("\n");
}
exit(0);*/
mode->allocVectors = allocVectors;
}
#endif /* CUSTOM_MODES */
CELTMode *opus_custom_mode_create(opus_int32 Fs, int frame_size, int *error)
{
int i;
#ifdef CUSTOM_MODES
CELTMode *mode=NULL;
int res;
opus_val16 *window;
opus_int16 *logN;
int LM;
ALLOC_STACK;
#if !defined(VAR_ARRAYS) && !defined(USE_ALLOCA)
if (global_stack==NULL)
goto failure;
#endif
#endif
#ifndef CUSTOM_MODES_ONLY
for (i=0;i<TOTAL_MODES;i++)
{
int j;
for (j=0;j<4;j++)
{
if (Fs == static_mode_list[i]->Fs &&
(frame_size<<j) == static_mode_list[i]->shortMdctSize*static_mode_list[i]->nbShortMdcts)
{
if (error)
*error = OPUS_OK;
return (CELTMode*)static_mode_list[i];
}
}
}
#endif /* CUSTOM_MODES_ONLY */
#ifndef CUSTOM_MODES
if (error)
*error = OPUS_BAD_ARG;
return NULL;
#else
/* The good thing here is that permutation of the arguments will automatically be invalid */
if (Fs < 8000 || Fs > 96000)
{
if (error)
*error = OPUS_BAD_ARG;
return NULL;
}
if (frame_size < 40 || frame_size > 1024 || frame_size%2!=0)
{
if (error)
*error = OPUS_BAD_ARG;
return NULL;
}
/* Frames of less than 1ms are not supported. */
if ((opus_int32)frame_size*1000 < Fs)
{
if (error)
*error = OPUS_BAD_ARG;
return NULL;
}
if ((opus_int32)frame_size*75 >= Fs && (frame_size%16)==0)
{
LM = 3;
} else if ((opus_int32)frame_size*150 >= Fs && (frame_size%8)==0)
{
LM = 2;
} else if ((opus_int32)frame_size*300 >= Fs && (frame_size%4)==0)
{
LM = 1;
} else
{
LM = 0;
}
/* Shorts longer than 3.3ms are not supported. */
if ((opus_int32)(frame_size>>LM)*300 > Fs)
{
if (error)
*error = OPUS_BAD_ARG;
return NULL;
}
mode = opus_alloc(sizeof(CELTMode));
if (mode==NULL)
goto failure;
mode->Fs = Fs;
/* Pre/de-emphasis depends on sampling rate. The "standard" pre-emphasis
is defined as A(z) = 1 - 0.85*z^-1 at 48 kHz. Other rates should
approximate that. */
if(Fs < 12000) /* 8 kHz */
{
mode->preemph[0] = QCONST16(0.3500061035f, 15);
mode->preemph[1] = -QCONST16(0.1799926758f, 15);
mode->preemph[2] = QCONST16(0.2719968125f, SIG_SHIFT); /* exact 1/preemph[3] */
mode->preemph[3] = QCONST16(3.6765136719f, 13);
} else if(Fs < 24000) /* 16 kHz */
{
mode->preemph[0] = QCONST16(0.6000061035f, 15);
mode->preemph[1] = -QCONST16(0.1799926758f, 15);
mode->preemph[2] = QCONST16(0.4424998650f, SIG_SHIFT); /* exact 1/preemph[3] */
mode->preemph[3] = QCONST16(2.2598876953f, 13);
} else if(Fs < 40000) /* 32 kHz */
{
mode->preemph[0] = QCONST16(0.7799987793f, 15);
mode->preemph[1] = -QCONST16(0.1000061035f, 15);
mode->preemph[2] = QCONST16(0.7499771125f, SIG_SHIFT); /* exact 1/preemph[3] */
mode->preemph[3] = QCONST16(1.3333740234f, 13);
} else /* 48 kHz */
{
mode->preemph[0] = QCONST16(0.8500061035f, 15);
mode->preemph[1] = QCONST16(0.0f, 15);
mode->preemph[2] = QCONST16(1.f, SIG_SHIFT);
mode->preemph[3] = QCONST16(1.f, 13);
}
mode->maxLM = LM;
mode->nbShortMdcts = 1<<LM;
mode->shortMdctSize = frame_size/mode->nbShortMdcts;
res = (mode->Fs+mode->shortMdctSize)/(2*mode->shortMdctSize);
mode->eBands = compute_ebands(Fs, mode->shortMdctSize, res, &mode->nbEBands);
if (mode->eBands==NULL)
goto failure;
#if !defined(SMALL_FOOTPRINT)
/* Make sure we don't allocate a band larger than our PVQ table.
208 should be enough, but let's be paranoid. */
if ((mode->eBands[mode->nbEBands] - mode->eBands[mode->nbEBands-1])<<LM >
208) {
goto failure;
}
#endif
mode->effEBands = mode->nbEBands;
while (mode->eBands[mode->effEBands] > mode->shortMdctSize)
mode->effEBands--;
/* Overlap must be divisible by 4 */
mode->overlap = ((mode->shortMdctSize>>2)<<2);
compute_allocation_table(mode);
if (mode->allocVectors==NULL)
goto failure;
window = (opus_val16*)opus_alloc(mode->overlap*sizeof(opus_val16));
if (window==NULL)
goto failure;
#ifndef FIXED_POINT
for (i=0;i<mode->overlap;i++)
window[i] = Q15ONE*sin(.5*M_PI* sin(.5*M_PI*(i+.5)/mode->overlap) * sin(.5*M_PI*(i+.5)/mode->overlap));
#else
for (i=0;i<mode->overlap;i++)
window[i] = MIN32(32767,floor(.5+32768.*sin(.5*M_PI* sin(.5*M_PI*(i+.5)/mode->overlap) * sin(.5*M_PI*(i+.5)/mode->overlap))));
#endif
mode->window = window;
logN = (opus_int16*)opus_alloc(mode->nbEBands*sizeof(opus_int16));
if (logN==NULL)
goto failure;
for (i=0;i<mode->nbEBands;i++)
logN[i] = log2_frac(mode->eBands[i+1]-mode->eBands[i], BITRES);
mode->logN = logN;
compute_pulse_cache(mode, mode->maxLM);
if (clt_mdct_init(&mode->mdct, 2*mode->shortMdctSize*mode->nbShortMdcts,
mode->maxLM) == 0)
goto failure;
if (error)
*error = OPUS_OK;
return mode;
failure:
if (error)
*error = OPUS_ALLOC_FAIL;
if (mode!=NULL)
opus_custom_mode_destroy(mode);
return NULL;
#endif /* !CUSTOM_MODES */
}
#ifdef CUSTOM_MODES
void opus_custom_mode_destroy(CELTMode *mode)
{
if (mode == NULL)
return;
#ifndef CUSTOM_MODES_ONLY
{
int i;
for (i=0;i<TOTAL_MODES;i++)
{
if (mode == static_mode_list[i])
{
return;
}
}
}
#endif /* CUSTOM_MODES_ONLY */
opus_free((opus_int16*)mode->eBands);
opus_free((opus_int16*)mode->allocVectors);
opus_free((opus_val16*)mode->window);
opus_free((opus_int16*)mode->logN);
opus_free((opus_int16*)mode->cache.index);
opus_free((unsigned char*)mode->cache.bits);
opus_free((unsigned char*)mode->cache.caps);
clt_mdct_clear(&mode->mdct);
opus_free((CELTMode *)mode);
}
#endif

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/* Copyright (c) 2007-2008 CSIRO
Copyright (c) 2007-2009 Xiph.Org Foundation
Copyright (c) 2008 Gregory Maxwell
Written by Jean-Marc Valin and Gregory Maxwell */
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef MODES_H
#define MODES_H
#include "opus_types.h"
#include "celt.h"
#include "arch.h"
#include "mdct.h"
#include "entenc.h"
#include "entdec.h"
#define MAX_PERIOD 1024
#ifndef OVERLAP
#define OVERLAP(mode) ((mode)->overlap)
#endif
#ifndef FRAMESIZE
#define FRAMESIZE(mode) ((mode)->mdctSize)
#endif
typedef struct {
int size;
const opus_int16 *index;
const unsigned char *bits;
const unsigned char *caps;
} PulseCache;
/** Mode definition (opaque)
@brief Mode definition
*/
struct OpusCustomMode {
opus_int32 Fs;
int overlap;
int nbEBands;
int effEBands;
opus_val16 preemph[4];
const opus_int16 *eBands; /**< Definition for each "pseudo-critical band" */
int maxLM;
int nbShortMdcts;
int shortMdctSize;
int nbAllocVectors; /**< Number of lines in the matrix below */
const unsigned char *allocVectors; /**< Number of bits in each band for several rates */
const opus_int16 *logN;
const opus_val16 *window;
mdct_lookup mdct;
PulseCache cache;
};
#endif

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/* Copyright (C) 2007 Jean-Marc Valin
File: os_support.h
This is the (tiny) OS abstraction layer. Aside from math.h, this is the
only place where system headers are allowed.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
1. Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef OS_SUPPORT_H
#define OS_SUPPORT_H
#ifdef CUSTOM_SUPPORT
# include "custom_support.h"
#endif
#include "opus_types.h"
#include "opus_defines.h"
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
/** Opus wrapper for malloc(). To do your own dynamic allocation, all you need to do is replace this function and opus_free */
#ifndef OVERRIDE_OPUS_ALLOC
static OPUS_INLINE void *opus_alloc (size_t size)
{
return malloc(size);
}
#endif
/** Same as celt_alloc(), except that the area is only needed inside a CELT call (might cause problem with wideband though) */
#ifndef OVERRIDE_OPUS_ALLOC_SCRATCH
static OPUS_INLINE void *opus_alloc_scratch (size_t size)
{
/* Scratch space doesn't need to be cleared */
return opus_alloc(size);
}
#endif
/** Opus wrapper for free(). To do your own dynamic allocation, all you need to do is replace this function and opus_alloc */
#ifndef OVERRIDE_OPUS_FREE
static OPUS_INLINE void opus_free (void *ptr)
{
free(ptr);
}
#endif
/** Copy n bytes of memory from src to dst. The 0* term provides compile-time type checking */
#ifndef OVERRIDE_OPUS_COPY
#define OPUS_COPY(dst, src, n) (memcpy((dst), (src), (n)*sizeof(*(dst)) + 0*((dst)-(src)) ))
#endif
/** Copy n bytes of memory from src to dst, allowing overlapping regions. The 0* term
provides compile-time type checking */
#ifndef OVERRIDE_OPUS_MOVE
#define OPUS_MOVE(dst, src, n) (memmove((dst), (src), (n)*sizeof(*(dst)) + 0*((dst)-(src)) ))
#endif
/** Set n elements of dst to zero, starting at address s */
#ifndef OVERRIDE_OPUS_CLEAR
#define OPUS_CLEAR(dst, n) (memset((dst), 0, (n)*sizeof(*(dst))))
#endif
/*#ifdef __GNUC__
#pragma GCC poison printf sprintf
#pragma GCC poison malloc free realloc calloc
#endif*/
#endif /* OS_SUPPORT_H */

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src/engine/external/opus/celt/pitch.c vendored Normal file
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/* Copyright (c) 2007-2008 CSIRO
Copyright (c) 2007-2009 Xiph.Org Foundation
Written by Jean-Marc Valin */
/**
@file pitch.c
@brief Pitch analysis
*/
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "pitch.h"
#include "os_support.h"
#include "modes.h"
#include "stack_alloc.h"
#include "mathops.h"
#include "celt_lpc.h"
static void find_best_pitch(opus_val32 *xcorr, opus_val16 *y, int len,
int max_pitch, int *best_pitch
#ifdef FIXED_POINT
, int yshift, opus_val32 maxcorr
#endif
)
{
int i, j;
opus_val32 Syy=1;
opus_val16 best_num[2];
opus_val32 best_den[2];
#ifdef FIXED_POINT
int xshift;
xshift = celt_ilog2(maxcorr)-14;
#endif
best_num[0] = -1;
best_num[1] = -1;
best_den[0] = 0;
best_den[1] = 0;
best_pitch[0] = 0;
best_pitch[1] = 1;
for (j=0;j<len;j++)
Syy = ADD32(Syy, SHR32(MULT16_16(y[j],y[j]), yshift));
for (i=0;i<max_pitch;i++)
{
if (xcorr[i]>0)
{
opus_val16 num;
opus_val32 xcorr16;
xcorr16 = EXTRACT16(VSHR32(xcorr[i], xshift));
#ifndef FIXED_POINT
/* Considering the range of xcorr16, this should avoid both underflows
and overflows (inf) when squaring xcorr16 */
xcorr16 *= 1e-12f;
#endif
num = MULT16_16_Q15(xcorr16,xcorr16);
if (MULT16_32_Q15(num,best_den[1]) > MULT16_32_Q15(best_num[1],Syy))
{
if (MULT16_32_Q15(num,best_den[0]) > MULT16_32_Q15(best_num[0],Syy))
{
best_num[1] = best_num[0];
best_den[1] = best_den[0];
best_pitch[1] = best_pitch[0];
best_num[0] = num;
best_den[0] = Syy;
best_pitch[0] = i;
} else {
best_num[1] = num;
best_den[1] = Syy;
best_pitch[1] = i;
}
}
}
Syy += SHR32(MULT16_16(y[i+len],y[i+len]),yshift) - SHR32(MULT16_16(y[i],y[i]),yshift);
Syy = MAX32(1, Syy);
}
}
static void celt_fir5(const opus_val16 *x,
const opus_val16 *num,
opus_val16 *y,
int N,
opus_val16 *mem)
{
int i;
opus_val16 num0, num1, num2, num3, num4;
opus_val32 mem0, mem1, mem2, mem3, mem4;
num0=num[0];
num1=num[1];
num2=num[2];
num3=num[3];
num4=num[4];
mem0=mem[0];
mem1=mem[1];
mem2=mem[2];
mem3=mem[3];
mem4=mem[4];
for (i=0;i<N;i++)
{
opus_val32 sum = SHL32(EXTEND32(x[i]), SIG_SHIFT);
sum = MAC16_16(sum,num0,mem0);
sum = MAC16_16(sum,num1,mem1);
sum = MAC16_16(sum,num2,mem2);
sum = MAC16_16(sum,num3,mem3);
sum = MAC16_16(sum,num4,mem4);
mem4 = mem3;
mem3 = mem2;
mem2 = mem1;
mem1 = mem0;
mem0 = x[i];
y[i] = ROUND16(sum, SIG_SHIFT);
}
mem[0]=mem0;
mem[1]=mem1;
mem[2]=mem2;
mem[3]=mem3;
mem[4]=mem4;
}
void pitch_downsample(celt_sig * OPUS_RESTRICT x[], opus_val16 * OPUS_RESTRICT x_lp,
int len, int C, int arch)
{
int i;
opus_val32 ac[5];
opus_val16 tmp=Q15ONE;
opus_val16 lpc[4], mem[5]={0,0,0,0,0};
opus_val16 lpc2[5];
opus_val16 c1 = QCONST16(.8f,15);
#ifdef FIXED_POINT
int shift;
opus_val32 maxabs = celt_maxabs32(x[0], len);
if (C==2)
{
opus_val32 maxabs_1 = celt_maxabs32(x[1], len);
maxabs = MAX32(maxabs, maxabs_1);
}
if (maxabs<1)
maxabs=1;
shift = celt_ilog2(maxabs)-10;
if (shift<0)
shift=0;
if (C==2)
shift++;
#endif
for (i=1;i<len>>1;i++)
x_lp[i] = SHR32(HALF32(HALF32(x[0][(2*i-1)]+x[0][(2*i+1)])+x[0][2*i]), shift);
x_lp[0] = SHR32(HALF32(HALF32(x[0][1])+x[0][0]), shift);
if (C==2)
{
for (i=1;i<len>>1;i++)
x_lp[i] += SHR32(HALF32(HALF32(x[1][(2*i-1)]+x[1][(2*i+1)])+x[1][2*i]), shift);
x_lp[0] += SHR32(HALF32(HALF32(x[1][1])+x[1][0]), shift);
}
_celt_autocorr(x_lp, ac, NULL, 0,
4, len>>1, arch);
/* Noise floor -40 dB */
#ifdef FIXED_POINT
ac[0] += SHR32(ac[0],13);
#else
ac[0] *= 1.0001f;
#endif
/* Lag windowing */
for (i=1;i<=4;i++)
{
/*ac[i] *= exp(-.5*(2*M_PI*.002*i)*(2*M_PI*.002*i));*/
#ifdef FIXED_POINT
ac[i] -= MULT16_32_Q15(2*i*i, ac[i]);
#else
ac[i] -= ac[i]*(.008f*i)*(.008f*i);
#endif
}
_celt_lpc(lpc, ac, 4);
for (i=0;i<4;i++)
{
tmp = MULT16_16_Q15(QCONST16(.9f,15), tmp);
lpc[i] = MULT16_16_Q15(lpc[i], tmp);
}
/* Add a zero */
lpc2[0] = lpc[0] + QCONST16(.8f,SIG_SHIFT);
lpc2[1] = lpc[1] + MULT16_16_Q15(c1,lpc[0]);
lpc2[2] = lpc[2] + MULT16_16_Q15(c1,lpc[1]);
lpc2[3] = lpc[3] + MULT16_16_Q15(c1,lpc[2]);
lpc2[4] = MULT16_16_Q15(c1,lpc[3]);
celt_fir5(x_lp, lpc2, x_lp, len>>1, mem);
}
#if 0 /* This is a simple version of the pitch correlation that should work
well on DSPs like Blackfin and TI C5x/C6x */
#ifdef FIXED_POINT
opus_val32
#else
void
#endif
celt_pitch_xcorr(opus_val16 *x, opus_val16 *y, opus_val32 *xcorr, int len, int max_pitch)
{
int i, j;
#ifdef FIXED_POINT
opus_val32 maxcorr=1;
#endif
for (i=0;i<max_pitch;i++)
{
opus_val32 sum = 0;
for (j=0;j<len;j++)
sum = MAC16_16(sum, x[j],y[i+j]);
xcorr[i] = sum;
#ifdef FIXED_POINT
maxcorr = MAX32(maxcorr, sum);
#endif
}
#ifdef FIXED_POINT
return maxcorr;
#endif
}
#else /* Unrolled version of the pitch correlation -- runs faster on x86 and ARM */
#ifdef FIXED_POINT
opus_val32
#else
void
#endif
celt_pitch_xcorr_c(const opus_val16 *_x, const opus_val16 *_y, opus_val32 *xcorr, int len, int max_pitch)
{
int i,j;
/*The EDSP version requires that max_pitch is at least 1, and that _x is
32-bit aligned.
Since it's hard to put asserts in assembly, put them here.*/
celt_assert(max_pitch>0);
celt_assert((((unsigned char *)_x-(unsigned char *)NULL)&3)==0);
#ifdef FIXED_POINT
opus_val32 maxcorr=1;
#endif
for (i=0;i<max_pitch-3;i+=4)
{
opus_val32 sum[4]={0,0,0,0};
xcorr_kernel(_x, _y+i, sum, len);
xcorr[i]=sum[0];
xcorr[i+1]=sum[1];
xcorr[i+2]=sum[2];
xcorr[i+3]=sum[3];
#ifdef FIXED_POINT
sum[0] = MAX32(sum[0], sum[1]);
sum[2] = MAX32(sum[2], sum[3]);
sum[0] = MAX32(sum[0], sum[2]);
maxcorr = MAX32(maxcorr, sum[0]);
#endif
}
/* In case max_pitch isn't a multiple of 4, do non-unrolled version. */
for (;i<max_pitch;i++)
{
opus_val32 sum = 0;
for (j=0;j<len;j++)
sum = MAC16_16(sum, _x[j],_y[i+j]);
xcorr[i] = sum;
#ifdef FIXED_POINT
maxcorr = MAX32(maxcorr, sum);
#endif
}
#ifdef FIXED_POINT
return maxcorr;
#endif
}
#endif
void pitch_search(const opus_val16 * OPUS_RESTRICT x_lp, opus_val16 * OPUS_RESTRICT y,
int len, int max_pitch, int *pitch, int arch)
{
int i, j;
int lag;
int best_pitch[2]={0,0};
VARDECL(opus_val16, x_lp4);
VARDECL(opus_val16, y_lp4);
VARDECL(opus_val32, xcorr);
#ifdef FIXED_POINT
opus_val32 maxcorr;
opus_val32 xmax, ymax;
int shift=0;
#endif
int offset;
SAVE_STACK;
celt_assert(len>0);
celt_assert(max_pitch>0);
lag = len+max_pitch;
ALLOC(x_lp4, len>>2, opus_val16);
ALLOC(y_lp4, lag>>2, opus_val16);
ALLOC(xcorr, max_pitch>>1, opus_val32);
/* Downsample by 2 again */
for (j=0;j<len>>2;j++)
x_lp4[j] = x_lp[2*j];
for (j=0;j<lag>>2;j++)
y_lp4[j] = y[2*j];
#ifdef FIXED_POINT
xmax = celt_maxabs16(x_lp4, len>>2);
ymax = celt_maxabs16(y_lp4, lag>>2);
shift = celt_ilog2(MAX32(1, MAX32(xmax, ymax)))-11;
if (shift>0)
{
for (j=0;j<len>>2;j++)
x_lp4[j] = SHR16(x_lp4[j], shift);
for (j=0;j<lag>>2;j++)
y_lp4[j] = SHR16(y_lp4[j], shift);
/* Use double the shift for a MAC */
shift *= 2;
} else {
shift = 0;
}
#endif
/* Coarse search with 4x decimation */
#ifdef FIXED_POINT
maxcorr =
#endif
celt_pitch_xcorr(x_lp4, y_lp4, xcorr, len>>2, max_pitch>>2, arch);
find_best_pitch(xcorr, y_lp4, len>>2, max_pitch>>2, best_pitch
#ifdef FIXED_POINT
, 0, maxcorr
#endif
);
/* Finer search with 2x decimation */
#ifdef FIXED_POINT
maxcorr=1;
#endif
for (i=0;i<max_pitch>>1;i++)
{
opus_val32 sum=0;
xcorr[i] = 0;
if (abs(i-2*best_pitch[0])>2 && abs(i-2*best_pitch[1])>2)
continue;
for (j=0;j<len>>1;j++)
sum += SHR32(MULT16_16(x_lp[j],y[i+j]), shift);
xcorr[i] = MAX32(-1, sum);
#ifdef FIXED_POINT
maxcorr = MAX32(maxcorr, sum);
#endif
}
find_best_pitch(xcorr, y, len>>1, max_pitch>>1, best_pitch
#ifdef FIXED_POINT
, shift+1, maxcorr
#endif
);
/* Refine by pseudo-interpolation */
if (best_pitch[0]>0 && best_pitch[0]<(max_pitch>>1)-1)
{
opus_val32 a, b, c;
a = xcorr[best_pitch[0]-1];
b = xcorr[best_pitch[0]];
c = xcorr[best_pitch[0]+1];
if ((c-a) > MULT16_32_Q15(QCONST16(.7f,15),b-a))
offset = 1;
else if ((a-c) > MULT16_32_Q15(QCONST16(.7f,15),b-c))
offset = -1;
else
offset = 0;
} else {
offset = 0;
}
*pitch = 2*best_pitch[0]-offset;
RESTORE_STACK;
}
static const int second_check[16] = {0, 0, 3, 2, 3, 2, 5, 2, 3, 2, 3, 2, 5, 2, 3, 2};
opus_val16 remove_doubling(opus_val16 *x, int maxperiod, int minperiod,
int N, int *T0_, int prev_period, opus_val16 prev_gain)
{
int k, i, T, T0;
opus_val16 g, g0;
opus_val16 pg;
opus_val32 xy,xx,yy,xy2;
opus_val32 xcorr[3];
opus_val32 best_xy, best_yy;
int offset;
int minperiod0;
VARDECL(opus_val32, yy_lookup);
SAVE_STACK;
minperiod0 = minperiod;
maxperiod /= 2;
minperiod /= 2;
*T0_ /= 2;
prev_period /= 2;
N /= 2;
x += maxperiod;
if (*T0_>=maxperiod)
*T0_=maxperiod-1;
T = T0 = *T0_;
ALLOC(yy_lookup, maxperiod+1, opus_val32);
dual_inner_prod(x, x, x-T0, N, &xx, &xy);
yy_lookup[0] = xx;
yy=xx;
for (i=1;i<=maxperiod;i++)
{
yy = yy+MULT16_16(x[-i],x[-i])-MULT16_16(x[N-i],x[N-i]);
yy_lookup[i] = MAX32(0, yy);
}
yy = yy_lookup[T0];
best_xy = xy;
best_yy = yy;
#ifdef FIXED_POINT
{
opus_val32 x2y2;
int sh, t;
x2y2 = 1+HALF32(MULT32_32_Q31(xx,yy));
sh = celt_ilog2(x2y2)>>1;
t = VSHR32(x2y2, 2*(sh-7));
g = g0 = VSHR32(MULT16_32_Q15(celt_rsqrt_norm(t), xy),sh+1);
}
#else
g = g0 = xy/celt_sqrt(1+xx*yy);
#endif
/* Look for any pitch at T/k */
for (k=2;k<=15;k++)
{
int T1, T1b;
opus_val16 g1;
opus_val16 cont=0;
opus_val16 thresh;
T1 = (2*T0+k)/(2*k);
if (T1 < minperiod)
break;
/* Look for another strong correlation at T1b */
if (k==2)
{
if (T1+T0>maxperiod)
T1b = T0;
else
T1b = T0+T1;
} else
{
T1b = (2*second_check[k]*T0+k)/(2*k);
}
dual_inner_prod(x, &x[-T1], &x[-T1b], N, &xy, &xy2);
xy += xy2;
yy = yy_lookup[T1] + yy_lookup[T1b];
#ifdef FIXED_POINT
{
opus_val32 x2y2;
int sh, t;
x2y2 = 1+MULT32_32_Q31(xx,yy);
sh = celt_ilog2(x2y2)>>1;
t = VSHR32(x2y2, 2*(sh-7));
g1 = VSHR32(MULT16_32_Q15(celt_rsqrt_norm(t), xy),sh+1);
}
#else
g1 = xy/celt_sqrt(1+2.f*xx*1.f*yy);
#endif
if (abs(T1-prev_period)<=1)
cont = prev_gain;
else if (abs(T1-prev_period)<=2 && 5*k*k < T0)
cont = HALF32(prev_gain);
else
cont = 0;
thresh = MAX16(QCONST16(.3f,15), MULT16_16_Q15(QCONST16(.7f,15),g0)-cont);
/* Bias against very high pitch (very short period) to avoid false-positives
due to short-term correlation */
if (T1<3*minperiod)
thresh = MAX16(QCONST16(.4f,15), MULT16_16_Q15(QCONST16(.85f,15),g0)-cont);
else if (T1<2*minperiod)
thresh = MAX16(QCONST16(.5f,15), MULT16_16_Q15(QCONST16(.9f,15),g0)-cont);
if (g1 > thresh)
{
best_xy = xy;
best_yy = yy;
T = T1;
g = g1;
}
}
best_xy = MAX32(0, best_xy);
if (best_yy <= best_xy)
pg = Q15ONE;
else
pg = SHR32(frac_div32(best_xy,best_yy+1),16);
for (k=0;k<3;k++)
{
int T1 = T+k-1;
xy = 0;
for (i=0;i<N;i++)
xy = MAC16_16(xy, x[i], x[i-T1]);
xcorr[k] = xy;
}
if ((xcorr[2]-xcorr[0]) > MULT16_32_Q15(QCONST16(.7f,15),xcorr[1]-xcorr[0]))
offset = 1;
else if ((xcorr[0]-xcorr[2]) > MULT16_32_Q15(QCONST16(.7f,15),xcorr[1]-xcorr[2]))
offset = -1;
else
offset = 0;
if (pg > g)
pg = g;
*T0_ = 2*T+offset;
if (*T0_<minperiod0)
*T0_=minperiod0;
RESTORE_STACK;
return pg;
}

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/* Copyright (c) 2007-2008 CSIRO
Copyright (c) 2007-2009 Xiph.Org Foundation
Written by Jean-Marc Valin */
/**
@file pitch.h
@brief Pitch analysis
*/
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef PITCH_H
#define PITCH_H
#include "modes.h"
#include "cpu_support.h"
#if defined(__SSE__) && !defined(FIXED_POINT)
#include "x86/pitch_sse.h"
#endif
#if defined(OPUS_ARM_ASM) && defined(FIXED_POINT)
# include "arm/pitch_arm.h"
#endif
void pitch_downsample(celt_sig * OPUS_RESTRICT x[], opus_val16 * OPUS_RESTRICT x_lp,
int len, int C, int arch);
void pitch_search(const opus_val16 * OPUS_RESTRICT x_lp, opus_val16 * OPUS_RESTRICT y,
int len, int max_pitch, int *pitch, int arch);
opus_val16 remove_doubling(opus_val16 *x, int maxperiod, int minperiod,
int N, int *T0, int prev_period, opus_val16 prev_gain);
/* OPT: This is the kernel you really want to optimize. It gets used a lot
by the prefilter and by the PLC. */
#ifndef OVERRIDE_XCORR_KERNEL
static OPUS_INLINE void xcorr_kernel(const opus_val16 * x, const opus_val16 * y, opus_val32 sum[4], int len)
{
int j;
opus_val16 y_0, y_1, y_2, y_3;
celt_assert(len>=3);
y_3=0; /* gcc doesn't realize that y_3 can't be used uninitialized */
y_0=*y++;
y_1=*y++;
y_2=*y++;
for (j=0;j<len-3;j+=4)
{
opus_val16 tmp;
tmp = *x++;
y_3=*y++;
sum[0] = MAC16_16(sum[0],tmp,y_0);
sum[1] = MAC16_16(sum[1],tmp,y_1);
sum[2] = MAC16_16(sum[2],tmp,y_2);
sum[3] = MAC16_16(sum[3],tmp,y_3);
tmp=*x++;
y_0=*y++;
sum[0] = MAC16_16(sum[0],tmp,y_1);
sum[1] = MAC16_16(sum[1],tmp,y_2);
sum[2] = MAC16_16(sum[2],tmp,y_3);
sum[3] = MAC16_16(sum[3],tmp,y_0);
tmp=*x++;
y_1=*y++;
sum[0] = MAC16_16(sum[0],tmp,y_2);
sum[1] = MAC16_16(sum[1],tmp,y_3);
sum[2] = MAC16_16(sum[2],tmp,y_0);
sum[3] = MAC16_16(sum[3],tmp,y_1);
tmp=*x++;
y_2=*y++;
sum[0] = MAC16_16(sum[0],tmp,y_3);
sum[1] = MAC16_16(sum[1],tmp,y_0);
sum[2] = MAC16_16(sum[2],tmp,y_1);
sum[3] = MAC16_16(sum[3],tmp,y_2);
}
if (j++<len)
{
opus_val16 tmp = *x++;
y_3=*y++;
sum[0] = MAC16_16(sum[0],tmp,y_0);
sum[1] = MAC16_16(sum[1],tmp,y_1);
sum[2] = MAC16_16(sum[2],tmp,y_2);
sum[3] = MAC16_16(sum[3],tmp,y_3);
}
if (j++<len)
{
opus_val16 tmp=*x++;
y_0=*y++;
sum[0] = MAC16_16(sum[0],tmp,y_1);
sum[1] = MAC16_16(sum[1],tmp,y_2);
sum[2] = MAC16_16(sum[2],tmp,y_3);
sum[3] = MAC16_16(sum[3],tmp,y_0);
}
if (j<len)
{
opus_val16 tmp=*x++;
y_1=*y++;
sum[0] = MAC16_16(sum[0],tmp,y_2);
sum[1] = MAC16_16(sum[1],tmp,y_3);
sum[2] = MAC16_16(sum[2],tmp,y_0);
sum[3] = MAC16_16(sum[3],tmp,y_1);
}
}
#endif /* OVERRIDE_XCORR_KERNEL */
#ifndef OVERRIDE_DUAL_INNER_PROD
static OPUS_INLINE void dual_inner_prod(const opus_val16 *x, const opus_val16 *y01, const opus_val16 *y02,
int N, opus_val32 *xy1, opus_val32 *xy2)
{
int i;
opus_val32 xy01=0;
opus_val32 xy02=0;
for (i=0;i<N;i++)
{
xy01 = MAC16_16(xy01, x[i], y01[i]);
xy02 = MAC16_16(xy02, x[i], y02[i]);
}
*xy1 = xy01;
*xy2 = xy02;
}
#endif
#ifdef FIXED_POINT
opus_val32
#else
void
#endif
celt_pitch_xcorr_c(const opus_val16 *_x, const opus_val16 *_y,
opus_val32 *xcorr, int len, int max_pitch);
#if !defined(OVERRIDE_PITCH_XCORR)
/*Is run-time CPU detection enabled on this platform?*/
# if defined(OPUS_HAVE_RTCD)
extern
# if defined(FIXED_POINT)
opus_val32
# else
void
# endif
(*const CELT_PITCH_XCORR_IMPL[OPUS_ARCHMASK+1])(const opus_val16 *,
const opus_val16 *, opus_val32 *, int, int);
# define celt_pitch_xcorr(_x, _y, xcorr, len, max_pitch, arch) \
((*CELT_PITCH_XCORR_IMPL[(arch)&OPUS_ARCHMASK])(_x, _y, \
xcorr, len, max_pitch))
# else
# define celt_pitch_xcorr(_x, _y, xcorr, len, max_pitch, arch) \
((void)(arch),celt_pitch_xcorr_c(_x, _y, xcorr, len, max_pitch))
# endif
#endif
#endif

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/* Copyright (c) 2007-2008 CSIRO
Copyright (c) 2007-2009 Xiph.Org Foundation
Written by Jean-Marc Valin */
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "quant_bands.h"
#include "laplace.h"
#include <math.h>
#include "os_support.h"
#include "arch.h"
#include "mathops.h"
#include "stack_alloc.h"
#include "rate.h"
#ifdef FIXED_POINT
/* Mean energy in each band quantized in Q4 */
const signed char eMeans[25] = {
103,100, 92, 85, 81,
77, 72, 70, 78, 75,
73, 71, 78, 74, 69,
72, 70, 74, 76, 71,
60, 60, 60, 60, 60
};
#else
/* Mean energy in each band quantized in Q4 and converted back to float */
const opus_val16 eMeans[25] = {
6.437500f, 6.250000f, 5.750000f, 5.312500f, 5.062500f,
4.812500f, 4.500000f, 4.375000f, 4.875000f, 4.687500f,
4.562500f, 4.437500f, 4.875000f, 4.625000f, 4.312500f,
4.500000f, 4.375000f, 4.625000f, 4.750000f, 4.437500f,
3.750000f, 3.750000f, 3.750000f, 3.750000f, 3.750000f
};
#endif
/* prediction coefficients: 0.9, 0.8, 0.65, 0.5 */
#ifdef FIXED_POINT
static const opus_val16 pred_coef[4] = {29440, 26112, 21248, 16384};
static const opus_val16 beta_coef[4] = {30147, 22282, 12124, 6554};
static const opus_val16 beta_intra = 4915;
#else
static const opus_val16 pred_coef[4] = {29440/32768., 26112/32768., 21248/32768., 16384/32768.};
static const opus_val16 beta_coef[4] = {30147/32768., 22282/32768., 12124/32768., 6554/32768.};
static const opus_val16 beta_intra = 4915/32768.;
#endif
/*Parameters of the Laplace-like probability models used for the coarse energy.
There is one pair of parameters for each frame size, prediction type
(inter/intra), and band number.
The first number of each pair is the probability of 0, and the second is the
decay rate, both in Q8 precision.*/
static const unsigned char e_prob_model[4][2][42] = {
/*120 sample frames.*/
{
/*Inter*/
{
72, 127, 65, 129, 66, 128, 65, 128, 64, 128, 62, 128, 64, 128,
64, 128, 92, 78, 92, 79, 92, 78, 90, 79, 116, 41, 115, 40,
114, 40, 132, 26, 132, 26, 145, 17, 161, 12, 176, 10, 177, 11
},
/*Intra*/
{
24, 179, 48, 138, 54, 135, 54, 132, 53, 134, 56, 133, 55, 132,
55, 132, 61, 114, 70, 96, 74, 88, 75, 88, 87, 74, 89, 66,
91, 67, 100, 59, 108, 50, 120, 40, 122, 37, 97, 43, 78, 50
}
},
/*240 sample frames.*/
{
/*Inter*/
{
83, 78, 84, 81, 88, 75, 86, 74, 87, 71, 90, 73, 93, 74,
93, 74, 109, 40, 114, 36, 117, 34, 117, 34, 143, 17, 145, 18,
146, 19, 162, 12, 165, 10, 178, 7, 189, 6, 190, 8, 177, 9
},
/*Intra*/
{
23, 178, 54, 115, 63, 102, 66, 98, 69, 99, 74, 89, 71, 91,
73, 91, 78, 89, 86, 80, 92, 66, 93, 64, 102, 59, 103, 60,
104, 60, 117, 52, 123, 44, 138, 35, 133, 31, 97, 38, 77, 45
}
},
/*480 sample frames.*/
{
/*Inter*/
{
61, 90, 93, 60, 105, 42, 107, 41, 110, 45, 116, 38, 113, 38,
112, 38, 124, 26, 132, 27, 136, 19, 140, 20, 155, 14, 159, 16,
158, 18, 170, 13, 177, 10, 187, 8, 192, 6, 175, 9, 159, 10
},
/*Intra*/
{
21, 178, 59, 110, 71, 86, 75, 85, 84, 83, 91, 66, 88, 73,
87, 72, 92, 75, 98, 72, 105, 58, 107, 54, 115, 52, 114, 55,
112, 56, 129, 51, 132, 40, 150, 33, 140, 29, 98, 35, 77, 42
}
},
/*960 sample frames.*/
{
/*Inter*/
{
42, 121, 96, 66, 108, 43, 111, 40, 117, 44, 123, 32, 120, 36,
119, 33, 127, 33, 134, 34, 139, 21, 147, 23, 152, 20, 158, 25,
154, 26, 166, 21, 173, 16, 184, 13, 184, 10, 150, 13, 139, 15
},
/*Intra*/
{
22, 178, 63, 114, 74, 82, 84, 83, 92, 82, 103, 62, 96, 72,
96, 67, 101, 73, 107, 72, 113, 55, 118, 52, 125, 52, 118, 52,
117, 55, 135, 49, 137, 39, 157, 32, 145, 29, 97, 33, 77, 40
}
}
};
static const unsigned char small_energy_icdf[3]={2,1,0};
static opus_val32 loss_distortion(const opus_val16 *eBands, opus_val16 *oldEBands, int start, int end, int len, int C)
{
int c, i;
opus_val32 dist = 0;
c=0; do {
for (i=start;i<end;i++)
{
opus_val16 d = SUB16(SHR16(eBands[i+c*len], 3), SHR16(oldEBands[i+c*len], 3));
dist = MAC16_16(dist, d,d);
}
} while (++c<C);
return MIN32(200,SHR32(dist,2*DB_SHIFT-6));
}
static int quant_coarse_energy_impl(const CELTMode *m, int start, int end,
const opus_val16 *eBands, opus_val16 *oldEBands,
opus_int32 budget, opus_int32 tell,
const unsigned char *prob_model, opus_val16 *error, ec_enc *enc,
int C, int LM, int intra, opus_val16 max_decay, int lfe)
{
int i, c;
int badness = 0;
opus_val32 prev[2] = {0,0};
opus_val16 coef;
opus_val16 beta;
if (tell+3 <= budget)
ec_enc_bit_logp(enc, intra, 3);
if (intra)
{
coef = 0;
beta = beta_intra;
} else {
beta = beta_coef[LM];
coef = pred_coef[LM];
}
/* Encode at a fixed coarse resolution */
for (i=start;i<end;i++)
{
c=0;
do {
int bits_left;
int qi, qi0;
opus_val32 q;
opus_val16 x;
opus_val32 f, tmp;
opus_val16 oldE;
opus_val16 decay_bound;
x = eBands[i+c*m->nbEBands];
oldE = MAX16(-QCONST16(9.f,DB_SHIFT), oldEBands[i+c*m->nbEBands]);
#ifdef FIXED_POINT
f = SHL32(EXTEND32(x),7) - PSHR32(MULT16_16(coef,oldE), 8) - prev[c];
/* Rounding to nearest integer here is really important! */
qi = (f+QCONST32(.5f,DB_SHIFT+7))>>(DB_SHIFT+7);
decay_bound = EXTRACT16(MAX32(-QCONST16(28.f,DB_SHIFT),
SUB32((opus_val32)oldEBands[i+c*m->nbEBands],max_decay)));
#else
f = x-coef*oldE-prev[c];
/* Rounding to nearest integer here is really important! */
qi = (int)floor(.5f+f);
decay_bound = MAX16(-QCONST16(28.f,DB_SHIFT), oldEBands[i+c*m->nbEBands]) - max_decay;
#endif
/* Prevent the energy from going down too quickly (e.g. for bands
that have just one bin) */
if (qi < 0 && x < decay_bound)
{
qi += (int)SHR16(SUB16(decay_bound,x), DB_SHIFT);
if (qi > 0)
qi = 0;
}
qi0 = qi;
/* If we don't have enough bits to encode all the energy, just assume
something safe. */
tell = ec_tell(enc);
bits_left = budget-tell-3*C*(end-i);
if (i!=start && bits_left < 30)
{
if (bits_left < 24)
qi = IMIN(1, qi);
if (bits_left < 16)
qi = IMAX(-1, qi);
}
if (lfe && i>=2)
qi = IMIN(qi, 0);
if (budget-tell >= 15)
{
int pi;
pi = 2*IMIN(i,20);
ec_laplace_encode(enc, &qi,
prob_model[pi]<<7, prob_model[pi+1]<<6);
}
else if(budget-tell >= 2)
{
qi = IMAX(-1, IMIN(qi, 1));
ec_enc_icdf(enc, 2*qi^-(qi<0), small_energy_icdf, 2);
}
else if(budget-tell >= 1)
{
qi = IMIN(0, qi);
ec_enc_bit_logp(enc, -qi, 1);
}
else
qi = -1;
error[i+c*m->nbEBands] = PSHR32(f,7) - SHL16(qi,DB_SHIFT);
badness += abs(qi0-qi);
q = (opus_val32)SHL32(EXTEND32(qi),DB_SHIFT);
tmp = PSHR32(MULT16_16(coef,oldE),8) + prev[c] + SHL32(q,7);
#ifdef FIXED_POINT
tmp = MAX32(-QCONST32(28.f, DB_SHIFT+7), tmp);
#endif
oldEBands[i+c*m->nbEBands] = PSHR32(tmp, 7);
prev[c] = prev[c] + SHL32(q,7) - MULT16_16(beta,PSHR32(q,8));
} while (++c < C);
}
return lfe ? 0 : badness;
}
void quant_coarse_energy(const CELTMode *m, int start, int end, int effEnd,
const opus_val16 *eBands, opus_val16 *oldEBands, opus_uint32 budget,
opus_val16 *error, ec_enc *enc, int C, int LM, int nbAvailableBytes,
int force_intra, opus_val32 *delayedIntra, int two_pass, int loss_rate, int lfe)
{
int intra;
opus_val16 max_decay;
VARDECL(opus_val16, oldEBands_intra);
VARDECL(opus_val16, error_intra);
ec_enc enc_start_state;
opus_uint32 tell;
int badness1=0;
opus_int32 intra_bias;
opus_val32 new_distortion;
SAVE_STACK;
intra = force_intra || (!two_pass && *delayedIntra>2*C*(end-start) && nbAvailableBytes > (end-start)*C);
intra_bias = (opus_int32)((budget**delayedIntra*loss_rate)/(C*512));
new_distortion = loss_distortion(eBands, oldEBands, start, effEnd, m->nbEBands, C);
tell = ec_tell(enc);
if (tell+3 > budget)
two_pass = intra = 0;
max_decay = QCONST16(16.f,DB_SHIFT);
if (end-start>10)
{
#ifdef FIXED_POINT
max_decay = MIN32(max_decay, SHL32(EXTEND32(nbAvailableBytes),DB_SHIFT-3));
#else
max_decay = MIN32(max_decay, .125f*nbAvailableBytes);
#endif
}
if (lfe)
max_decay=3;
enc_start_state = *enc;
ALLOC(oldEBands_intra, C*m->nbEBands, opus_val16);
ALLOC(error_intra, C*m->nbEBands, opus_val16);
OPUS_COPY(oldEBands_intra, oldEBands, C*m->nbEBands);
if (two_pass || intra)
{
badness1 = quant_coarse_energy_impl(m, start, end, eBands, oldEBands_intra, budget,
tell, e_prob_model[LM][1], error_intra, enc, C, LM, 1, max_decay, lfe);
}
if (!intra)
{
unsigned char *intra_buf;
ec_enc enc_intra_state;
opus_int32 tell_intra;
opus_uint32 nstart_bytes;
opus_uint32 nintra_bytes;
opus_uint32 save_bytes;
int badness2;
VARDECL(unsigned char, intra_bits);
tell_intra = ec_tell_frac(enc);
enc_intra_state = *enc;
nstart_bytes = ec_range_bytes(&enc_start_state);
nintra_bytes = ec_range_bytes(&enc_intra_state);
intra_buf = ec_get_buffer(&enc_intra_state) + nstart_bytes;
save_bytes = nintra_bytes-nstart_bytes;
if (save_bytes == 0)
save_bytes = ALLOC_NONE;
ALLOC(intra_bits, save_bytes, unsigned char);
/* Copy bits from intra bit-stream */
OPUS_COPY(intra_bits, intra_buf, nintra_bytes - nstart_bytes);
*enc = enc_start_state;
badness2 = quant_coarse_energy_impl(m, start, end, eBands, oldEBands, budget,
tell, e_prob_model[LM][intra], error, enc, C, LM, 0, max_decay, lfe);
if (two_pass && (badness1 < badness2 || (badness1 == badness2 && ((opus_int32)ec_tell_frac(enc))+intra_bias > tell_intra)))
{
*enc = enc_intra_state;
/* Copy intra bits to bit-stream */
OPUS_COPY(intra_buf, intra_bits, nintra_bytes - nstart_bytes);
OPUS_COPY(oldEBands, oldEBands_intra, C*m->nbEBands);
OPUS_COPY(error, error_intra, C*m->nbEBands);
intra = 1;
}
} else {
OPUS_COPY(oldEBands, oldEBands_intra, C*m->nbEBands);
OPUS_COPY(error, error_intra, C*m->nbEBands);
}
if (intra)
*delayedIntra = new_distortion;
else
*delayedIntra = ADD32(MULT16_32_Q15(MULT16_16_Q15(pred_coef[LM], pred_coef[LM]),*delayedIntra),
new_distortion);
RESTORE_STACK;
}
void quant_fine_energy(const CELTMode *m, int start, int end, opus_val16 *oldEBands, opus_val16 *error, int *fine_quant, ec_enc *enc, int C)
{
int i, c;
/* Encode finer resolution */
for (i=start;i<end;i++)
{
opus_int16 frac = 1<<fine_quant[i];
if (fine_quant[i] <= 0)
continue;
c=0;
do {
int q2;
opus_val16 offset;
#ifdef FIXED_POINT
/* Has to be without rounding */
q2 = (error[i+c*m->nbEBands]+QCONST16(.5f,DB_SHIFT))>>(DB_SHIFT-fine_quant[i]);
#else
q2 = (int)floor((error[i+c*m->nbEBands]+.5f)*frac);
#endif
if (q2 > frac-1)
q2 = frac-1;
if (q2<0)
q2 = 0;
ec_enc_bits(enc, q2, fine_quant[i]);
#ifdef FIXED_POINT
offset = SUB16(SHR32(SHL32(EXTEND32(q2),DB_SHIFT)+QCONST16(.5f,DB_SHIFT),fine_quant[i]),QCONST16(.5f,DB_SHIFT));
#else
offset = (q2+.5f)*(1<<(14-fine_quant[i]))*(1.f/16384) - .5f;
#endif
oldEBands[i+c*m->nbEBands] += offset;
error[i+c*m->nbEBands] -= offset;
/*printf ("%f ", error[i] - offset);*/
} while (++c < C);
}
}
void quant_energy_finalise(const CELTMode *m, int start, int end, opus_val16 *oldEBands, opus_val16 *error, int *fine_quant, int *fine_priority, int bits_left, ec_enc *enc, int C)
{
int i, prio, c;
/* Use up the remaining bits */
for (prio=0;prio<2;prio++)
{
for (i=start;i<end && bits_left>=C ;i++)
{
if (fine_quant[i] >= MAX_FINE_BITS || fine_priority[i]!=prio)
continue;
c=0;
do {
int q2;
opus_val16 offset;
q2 = error[i+c*m->nbEBands]<0 ? 0 : 1;
ec_enc_bits(enc, q2, 1);
#ifdef FIXED_POINT
offset = SHR16(SHL16(q2,DB_SHIFT)-QCONST16(.5f,DB_SHIFT),fine_quant[i]+1);
#else
offset = (q2-.5f)*(1<<(14-fine_quant[i]-1))*(1.f/16384);
#endif
oldEBands[i+c*m->nbEBands] += offset;
bits_left--;
} while (++c < C);
}
}
}
void unquant_coarse_energy(const CELTMode *m, int start, int end, opus_val16 *oldEBands, int intra, ec_dec *dec, int C, int LM)
{
const unsigned char *prob_model = e_prob_model[LM][intra];
int i, c;
opus_val32 prev[2] = {0, 0};
opus_val16 coef;
opus_val16 beta;
opus_int32 budget;
opus_int32 tell;
if (intra)
{
coef = 0;
beta = beta_intra;
} else {
beta = beta_coef[LM];
coef = pred_coef[LM];
}
budget = dec->storage*8;
/* Decode at a fixed coarse resolution */
for (i=start;i<end;i++)
{
c=0;
do {
int qi;
opus_val32 q;
opus_val32 tmp;
/* It would be better to express this invariant as a
test on C at function entry, but that isn't enough
to make the static analyzer happy. */
celt_assert(c<2);
tell = ec_tell(dec);
if(budget-tell>=15)
{
int pi;
pi = 2*IMIN(i,20);
qi = ec_laplace_decode(dec,
prob_model[pi]<<7, prob_model[pi+1]<<6);
}
else if(budget-tell>=2)
{
qi = ec_dec_icdf(dec, small_energy_icdf, 2);
qi = (qi>>1)^-(qi&1);
}
else if(budget-tell>=1)
{
qi = -ec_dec_bit_logp(dec, 1);
}
else
qi = -1;
q = (opus_val32)SHL32(EXTEND32(qi),DB_SHIFT);
oldEBands[i+c*m->nbEBands] = MAX16(-QCONST16(9.f,DB_SHIFT), oldEBands[i+c*m->nbEBands]);
tmp = PSHR32(MULT16_16(coef,oldEBands[i+c*m->nbEBands]),8) + prev[c] + SHL32(q,7);
#ifdef FIXED_POINT
tmp = MAX32(-QCONST32(28.f, DB_SHIFT+7), tmp);
#endif
oldEBands[i+c*m->nbEBands] = PSHR32(tmp, 7);
prev[c] = prev[c] + SHL32(q,7) - MULT16_16(beta,PSHR32(q,8));
} while (++c < C);
}
}
void unquant_fine_energy(const CELTMode *m, int start, int end, opus_val16 *oldEBands, int *fine_quant, ec_dec *dec, int C)
{
int i, c;
/* Decode finer resolution */
for (i=start;i<end;i++)
{
if (fine_quant[i] <= 0)
continue;
c=0;
do {
int q2;
opus_val16 offset;
q2 = ec_dec_bits(dec, fine_quant[i]);
#ifdef FIXED_POINT
offset = SUB16(SHR32(SHL32(EXTEND32(q2),DB_SHIFT)+QCONST16(.5f,DB_SHIFT),fine_quant[i]),QCONST16(.5f,DB_SHIFT));
#else
offset = (q2+.5f)*(1<<(14-fine_quant[i]))*(1.f/16384) - .5f;
#endif
oldEBands[i+c*m->nbEBands] += offset;
} while (++c < C);
}
}
void unquant_energy_finalise(const CELTMode *m, int start, int end, opus_val16 *oldEBands, int *fine_quant, int *fine_priority, int bits_left, ec_dec *dec, int C)
{
int i, prio, c;
/* Use up the remaining bits */
for (prio=0;prio<2;prio++)
{
for (i=start;i<end && bits_left>=C ;i++)
{
if (fine_quant[i] >= MAX_FINE_BITS || fine_priority[i]!=prio)
continue;
c=0;
do {
int q2;
opus_val16 offset;
q2 = ec_dec_bits(dec, 1);
#ifdef FIXED_POINT
offset = SHR16(SHL16(q2,DB_SHIFT)-QCONST16(.5f,DB_SHIFT),fine_quant[i]+1);
#else
offset = (q2-.5f)*(1<<(14-fine_quant[i]-1))*(1.f/16384);
#endif
oldEBands[i+c*m->nbEBands] += offset;
bits_left--;
} while (++c < C);
}
}
}
void amp2Log2(const CELTMode *m, int effEnd, int end,
celt_ener *bandE, opus_val16 *bandLogE, int C)
{
int c, i;
c=0;
do {
for (i=0;i<effEnd;i++)
bandLogE[i+c*m->nbEBands] =
celt_log2(SHL32(bandE[i+c*m->nbEBands],2))
- SHL16((opus_val16)eMeans[i],6);
for (i=effEnd;i<end;i++)
bandLogE[c*m->nbEBands+i] = -QCONST16(14.f,DB_SHIFT);
} while (++c < C);
}

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/* Copyright (c) 2007-2008 CSIRO
Copyright (c) 2007-2009 Xiph.Org Foundation
Written by Jean-Marc Valin */
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef QUANT_BANDS
#define QUANT_BANDS
#include "arch.h"
#include "modes.h"
#include "entenc.h"
#include "entdec.h"
#include "mathops.h"
#ifdef FIXED_POINT
extern const signed char eMeans[25];
#else
extern const opus_val16 eMeans[25];
#endif
void amp2Log2(const CELTMode *m, int effEnd, int end,
celt_ener *bandE, opus_val16 *bandLogE, int C);
void log2Amp(const CELTMode *m, int start, int end,
celt_ener *eBands, const opus_val16 *oldEBands, int C);
void quant_coarse_energy(const CELTMode *m, int start, int end, int effEnd,
const opus_val16 *eBands, opus_val16 *oldEBands, opus_uint32 budget,
opus_val16 *error, ec_enc *enc, int C, int LM,
int nbAvailableBytes, int force_intra, opus_val32 *delayedIntra,
int two_pass, int loss_rate, int lfe);
void quant_fine_energy(const CELTMode *m, int start, int end, opus_val16 *oldEBands, opus_val16 *error, int *fine_quant, ec_enc *enc, int C);
void quant_energy_finalise(const CELTMode *m, int start, int end, opus_val16 *oldEBands, opus_val16 *error, int *fine_quant, int *fine_priority, int bits_left, ec_enc *enc, int C);
void unquant_coarse_energy(const CELTMode *m, int start, int end, opus_val16 *oldEBands, int intra, ec_dec *dec, int C, int LM);
void unquant_fine_energy(const CELTMode *m, int start, int end, opus_val16 *oldEBands, int *fine_quant, ec_dec *dec, int C);
void unquant_energy_finalise(const CELTMode *m, int start, int end, opus_val16 *oldEBands, int *fine_quant, int *fine_priority, int bits_left, ec_dec *dec, int C);
#endif /* QUANT_BANDS */

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/* Copyright (c) 2007-2008 CSIRO
Copyright (c) 2007-2009 Xiph.Org Foundation
Written by Jean-Marc Valin */
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <math.h>
#include "modes.h"
#include "cwrs.h"
#include "arch.h"
#include "os_support.h"
#include "entcode.h"
#include "rate.h"
static const unsigned char LOG2_FRAC_TABLE[24]={
0,
8,13,
16,19,21,23,
24,26,27,28,29,30,31,32,
32,33,34,34,35,36,36,37,37
};
#ifdef CUSTOM_MODES
/*Determines if V(N,K) fits in a 32-bit unsigned integer.
N and K are themselves limited to 15 bits.*/
static int fits_in32(int _n, int _k)
{
static const opus_int16 maxN[15] = {
32767, 32767, 32767, 1476, 283, 109, 60, 40,
29, 24, 20, 18, 16, 14, 13};
static const opus_int16 maxK[15] = {
32767, 32767, 32767, 32767, 1172, 238, 95, 53,
36, 27, 22, 18, 16, 15, 13};
if (_n>=14)
{
if (_k>=14)
return 0;
else
return _n <= maxN[_k];
} else {
return _k <= maxK[_n];
}
}
void compute_pulse_cache(CELTMode *m, int LM)
{
int C;
int i;
int j;
int curr=0;
int nbEntries=0;
int entryN[100], entryK[100], entryI[100];
const opus_int16 *eBands = m->eBands;
PulseCache *cache = &m->cache;
opus_int16 *cindex;
unsigned char *bits;
unsigned char *cap;
cindex = (opus_int16 *)opus_alloc(sizeof(cache->index[0])*m->nbEBands*(LM+2));
cache->index = cindex;
/* Scan for all unique band sizes */
for (i=0;i<=LM+1;i++)
{
for (j=0;j<m->nbEBands;j++)
{
int k;
int N = (eBands[j+1]-eBands[j])<<i>>1;
cindex[i*m->nbEBands+j] = -1;
/* Find other bands that have the same size */
for (k=0;k<=i;k++)
{
int n;
for (n=0;n<m->nbEBands && (k!=i || n<j);n++)
{
if (N == (eBands[n+1]-eBands[n])<<k>>1)
{
cindex[i*m->nbEBands+j] = cindex[k*m->nbEBands+n];
break;
}
}
}
if (cache->index[i*m->nbEBands+j] == -1 && N!=0)
{
int K;
entryN[nbEntries] = N;
K = 0;
while (fits_in32(N,get_pulses(K+1)) && K<MAX_PSEUDO)
K++;
entryK[nbEntries] = K;
cindex[i*m->nbEBands+j] = curr;
entryI[nbEntries] = curr;
curr += K+1;
nbEntries++;
}
}
}
bits = (unsigned char *)opus_alloc(sizeof(unsigned char)*curr);
cache->bits = bits;
cache->size = curr;
/* Compute the cache for all unique sizes */
for (i=0;i<nbEntries;i++)
{
unsigned char *ptr = bits+entryI[i];
opus_int16 tmp[MAX_PULSES+1];
get_required_bits(tmp, entryN[i], get_pulses(entryK[i]), BITRES);
for (j=1;j<=entryK[i];j++)
ptr[j] = tmp[get_pulses(j)]-1;
ptr[0] = entryK[i];
}
/* Compute the maximum rate for each band at which we'll reliably use as
many bits as we ask for. */
cache->caps = cap = (unsigned char *)opus_alloc(sizeof(cache->caps[0])*(LM+1)*2*m->nbEBands);
for (i=0;i<=LM;i++)
{
for (C=1;C<=2;C++)
{
for (j=0;j<m->nbEBands;j++)
{
int N0;
int max_bits;
N0 = m->eBands[j+1]-m->eBands[j];
/* N=1 bands only have a sign bit and fine bits. */
if (N0<<i == 1)
max_bits = C*(1+MAX_FINE_BITS)<<BITRES;
else
{
const unsigned char *pcache;
opus_int32 num;
opus_int32 den;
int LM0;
int N;
int offset;
int ndof;
int qb;
int k;
LM0 = 0;
/* Even-sized bands bigger than N=2 can be split one more time.
As of commit 44203907 all bands >1 are even, including custom modes.*/
if (N0 > 2)
{
N0>>=1;
LM0--;
}
/* N0=1 bands can't be split down to N<2. */
else if (N0 <= 1)
{
LM0=IMIN(i,1);
N0<<=LM0;
}
/* Compute the cost for the lowest-level PVQ of a fully split
band. */
pcache = bits + cindex[(LM0+1)*m->nbEBands+j];
max_bits = pcache[pcache[0]]+1;
/* Add in the cost of coding regular splits. */
N = N0;
for(k=0;k<i-LM0;k++){
max_bits <<= 1;
/* Offset the number of qtheta bits by log2(N)/2
+ QTHETA_OFFSET compared to their "fair share" of
total/N */
offset = ((m->logN[j]+((LM0+k)<<BITRES))>>1)-QTHETA_OFFSET;
/* The number of qtheta bits we'll allocate if the remainder
is to be max_bits.
The average measured cost for theta is 0.89701 times qb,
approximated here as 459/512. */
num=459*(opus_int32)((2*N-1)*offset+max_bits);
den=((opus_int32)(2*N-1)<<9)-459;
qb = IMIN((num+(den>>1))/den, 57);
celt_assert(qb >= 0);
max_bits += qb;
N <<= 1;
}
/* Add in the cost of a stereo split, if necessary. */
if (C==2)
{
max_bits <<= 1;
offset = ((m->logN[j]+(i<<BITRES))>>1)-(N==2?QTHETA_OFFSET_TWOPHASE:QTHETA_OFFSET);
ndof = 2*N-1-(N==2);
/* The average measured cost for theta with the step PDF is
0.95164 times qb, approximated here as 487/512. */
num = (N==2?512:487)*(opus_int32)(max_bits+ndof*offset);
den = ((opus_int32)ndof<<9)-(N==2?512:487);
qb = IMIN((num+(den>>1))/den, (N==2?64:61));
celt_assert(qb >= 0);
max_bits += qb;
}
/* Add the fine bits we'll use. */
/* Compensate for the extra DoF in stereo */
ndof = C*N + ((C==2 && N>2) ? 1 : 0);
/* Offset the number of fine bits by log2(N)/2 + FINE_OFFSET
compared to their "fair share" of total/N */
offset = ((m->logN[j] + (i<<BITRES))>>1)-FINE_OFFSET;
/* N=2 is the only point that doesn't match the curve */
if (N==2)
offset += 1<<BITRES>>2;
/* The number of fine bits we'll allocate if the remainder is
to be max_bits. */
num = max_bits+ndof*offset;
den = (ndof-1)<<BITRES;
qb = IMIN((num+(den>>1))/den, MAX_FINE_BITS);
celt_assert(qb >= 0);
max_bits += C*qb<<BITRES;
}
max_bits = (4*max_bits/(C*((m->eBands[j+1]-m->eBands[j])<<i)))-64;
celt_assert(max_bits >= 0);
celt_assert(max_bits < 256);
*cap++ = (unsigned char)max_bits;
}
}
}
}
#endif /* CUSTOM_MODES */
#define ALLOC_STEPS 6
static OPUS_INLINE int interp_bits2pulses(const CELTMode *m, int start, int end, int skip_start,
const int *bits1, const int *bits2, const int *thresh, const int *cap, opus_int32 total, opus_int32 *_balance,
int skip_rsv, int *intensity, int intensity_rsv, int *dual_stereo, int dual_stereo_rsv, int *bits,
int *ebits, int *fine_priority, int C, int LM, ec_ctx *ec, int encode, int prev, int signalBandwidth)
{
opus_int32 psum;
int lo, hi;
int i, j;
int logM;
int stereo;
int codedBands=-1;
int alloc_floor;
opus_int32 left, percoeff;
int done;
opus_int32 balance;
SAVE_STACK;
alloc_floor = C<<BITRES;
stereo = C>1;
logM = LM<<BITRES;
lo = 0;
hi = 1<<ALLOC_STEPS;
for (i=0;i<ALLOC_STEPS;i++)
{
int mid = (lo+hi)>>1;
psum = 0;
done = 0;
for (j=end;j-->start;)
{
int tmp = bits1[j] + (mid*(opus_int32)bits2[j]>>ALLOC_STEPS);
if (tmp >= thresh[j] || done)
{
done = 1;
/* Don't allocate more than we can actually use */
psum += IMIN(tmp, cap[j]);
} else {
if (tmp >= alloc_floor)
psum += alloc_floor;
}
}
if (psum > total)
hi = mid;
else
lo = mid;
}
psum = 0;
/*printf ("interp bisection gave %d\n", lo);*/
done = 0;
for (j=end;j-->start;)
{
int tmp = bits1[j] + (lo*bits2[j]>>ALLOC_STEPS);
if (tmp < thresh[j] && !done)
{
if (tmp >= alloc_floor)
tmp = alloc_floor;
else
tmp = 0;
} else
done = 1;
/* Don't allocate more than we can actually use */
tmp = IMIN(tmp, cap[j]);
bits[j] = tmp;
psum += tmp;
}
/* Decide which bands to skip, working backwards from the end. */
for (codedBands=end;;codedBands--)
{
int band_width;
int band_bits;
int rem;
j = codedBands-1;
/* Never skip the first band, nor a band that has been boosted by
dynalloc.
In the first case, we'd be coding a bit to signal we're going to waste
all the other bits.
In the second case, we'd be coding a bit to redistribute all the bits
we just signaled should be cocentrated in this band. */
if (j<=skip_start)
{
/* Give the bit we reserved to end skipping back. */
total += skip_rsv;
break;
}
/*Figure out how many left-over bits we would be adding to this band.
This can include bits we've stolen back from higher, skipped bands.*/
left = total-psum;
percoeff = left/(m->eBands[codedBands]-m->eBands[start]);
left -= (m->eBands[codedBands]-m->eBands[start])*percoeff;
rem = IMAX(left-(m->eBands[j]-m->eBands[start]),0);
band_width = m->eBands[codedBands]-m->eBands[j];
band_bits = (int)(bits[j] + percoeff*band_width + rem);
/*Only code a skip decision if we're above the threshold for this band.
Otherwise it is force-skipped.
This ensures that we have enough bits to code the skip flag.*/
if (band_bits >= IMAX(thresh[j], alloc_floor+(1<<BITRES)))
{
if (encode)
{
/*This if() block is the only part of the allocation function that
is not a mandatory part of the bitstream: any bands we choose to
skip here must be explicitly signaled.*/
/*Choose a threshold with some hysteresis to keep bands from
fluctuating in and out.*/
#ifdef FUZZING
if ((rand()&0x1) == 0)
#else
if (codedBands<=start+2 || (band_bits > ((j<prev?7:9)*band_width<<LM<<BITRES)>>4 && j<=signalBandwidth))
#endif
{
ec_enc_bit_logp(ec, 1, 1);
break;
}
ec_enc_bit_logp(ec, 0, 1);
} else if (ec_dec_bit_logp(ec, 1)) {
break;
}
/*We used a bit to skip this band.*/
psum += 1<<BITRES;
band_bits -= 1<<BITRES;
}
/*Reclaim the bits originally allocated to this band.*/
psum -= bits[j]+intensity_rsv;
if (intensity_rsv > 0)
intensity_rsv = LOG2_FRAC_TABLE[j-start];
psum += intensity_rsv;
if (band_bits >= alloc_floor)
{
/*If we have enough for a fine energy bit per channel, use it.*/
psum += alloc_floor;
bits[j] = alloc_floor;
} else {
/*Otherwise this band gets nothing at all.*/
bits[j] = 0;
}
}
celt_assert(codedBands > start);
/* Code the intensity and dual stereo parameters. */
if (intensity_rsv > 0)
{
if (encode)
{
*intensity = IMIN(*intensity, codedBands);
ec_enc_uint(ec, *intensity-start, codedBands+1-start);
}
else
*intensity = start+ec_dec_uint(ec, codedBands+1-start);
}
else
*intensity = 0;
if (*intensity <= start)
{
total += dual_stereo_rsv;
dual_stereo_rsv = 0;
}
if (dual_stereo_rsv > 0)
{
if (encode)
ec_enc_bit_logp(ec, *dual_stereo, 1);
else
*dual_stereo = ec_dec_bit_logp(ec, 1);
}
else
*dual_stereo = 0;
/* Allocate the remaining bits */
left = total-psum;
percoeff = left/(m->eBands[codedBands]-m->eBands[start]);
left -= (m->eBands[codedBands]-m->eBands[start])*percoeff;
for (j=start;j<codedBands;j++)
bits[j] += ((int)percoeff*(m->eBands[j+1]-m->eBands[j]));
for (j=start;j<codedBands;j++)
{
int tmp = (int)IMIN(left, m->eBands[j+1]-m->eBands[j]);
bits[j] += tmp;
left -= tmp;
}
/*for (j=0;j<end;j++)printf("%d ", bits[j]);printf("\n");*/
balance = 0;
for (j=start;j<codedBands;j++)
{
int N0, N, den;
int offset;
int NClogN;
opus_int32 excess, bit;
celt_assert(bits[j] >= 0);
N0 = m->eBands[j+1]-m->eBands[j];
N=N0<<LM;
bit = (opus_int32)bits[j]+balance;
if (N>1)
{
excess = MAX32(bit-cap[j],0);
bits[j] = bit-excess;
/* Compensate for the extra DoF in stereo */
den=(C*N+ ((C==2 && N>2 && !*dual_stereo && j<*intensity) ? 1 : 0));
NClogN = den*(m->logN[j] + logM);
/* Offset for the number of fine bits by log2(N)/2 + FINE_OFFSET
compared to their "fair share" of total/N */
offset = (NClogN>>1)-den*FINE_OFFSET;
/* N=2 is the only point that doesn't match the curve */
if (N==2)
offset += den<<BITRES>>2;
/* Changing the offset for allocating the second and third
fine energy bit */
if (bits[j] + offset < den*2<<BITRES)
offset += NClogN>>2;
else if (bits[j] + offset < den*3<<BITRES)
offset += NClogN>>3;
/* Divide with rounding */
ebits[j] = IMAX(0, (bits[j] + offset + (den<<(BITRES-1))) / (den<<BITRES));
/* Make sure not to bust */
if (C*ebits[j] > (bits[j]>>BITRES))
ebits[j] = bits[j] >> stereo >> BITRES;
/* More than that is useless because that's about as far as PVQ can go */
ebits[j] = IMIN(ebits[j], MAX_FINE_BITS);
/* If we rounded down or capped this band, make it a candidate for the
final fine energy pass */
fine_priority[j] = ebits[j]*(den<<BITRES) >= bits[j]+offset;
/* Remove the allocated fine bits; the rest are assigned to PVQ */
bits[j] -= C*ebits[j]<<BITRES;
} else {
/* For N=1, all bits go to fine energy except for a single sign bit */
excess = MAX32(0,bit-(C<<BITRES));
bits[j] = bit-excess;
ebits[j] = 0;
fine_priority[j] = 1;
}
/* Fine energy can't take advantage of the re-balancing in
quant_all_bands().
Instead, do the re-balancing here.*/
if(excess > 0)
{
int extra_fine;
int extra_bits;
extra_fine = IMIN(excess>>(stereo+BITRES),MAX_FINE_BITS-ebits[j]);
ebits[j] += extra_fine;
extra_bits = extra_fine*C<<BITRES;
fine_priority[j] = extra_bits >= excess-balance;
excess -= extra_bits;
}
balance = excess;
celt_assert(bits[j] >= 0);
celt_assert(ebits[j] >= 0);
}
/* Save any remaining bits over the cap for the rebalancing in
quant_all_bands(). */
*_balance = balance;
/* The skipped bands use all their bits for fine energy. */
for (;j<end;j++)
{
ebits[j] = bits[j] >> stereo >> BITRES;
celt_assert(C*ebits[j]<<BITRES == bits[j]);
bits[j] = 0;
fine_priority[j] = ebits[j]<1;
}
RESTORE_STACK;
return codedBands;
}
int compute_allocation(const CELTMode *m, int start, int end, const int *offsets, const int *cap, int alloc_trim, int *intensity, int *dual_stereo,
opus_int32 total, opus_int32 *balance, int *pulses, int *ebits, int *fine_priority, int C, int LM, ec_ctx *ec, int encode, int prev, int signalBandwidth)
{
int lo, hi, len, j;
int codedBands;
int skip_start;
int skip_rsv;
int intensity_rsv;
int dual_stereo_rsv;
VARDECL(int, bits1);
VARDECL(int, bits2);
VARDECL(int, thresh);
VARDECL(int, trim_offset);
SAVE_STACK;
total = IMAX(total, 0);
len = m->nbEBands;
skip_start = start;
/* Reserve a bit to signal the end of manually skipped bands. */
skip_rsv = total >= 1<<BITRES ? 1<<BITRES : 0;
total -= skip_rsv;
/* Reserve bits for the intensity and dual stereo parameters. */
intensity_rsv = dual_stereo_rsv = 0;
if (C==2)
{
intensity_rsv = LOG2_FRAC_TABLE[end-start];
if (intensity_rsv>total)
intensity_rsv = 0;
else
{
total -= intensity_rsv;
dual_stereo_rsv = total>=1<<BITRES ? 1<<BITRES : 0;
total -= dual_stereo_rsv;
}
}
ALLOC(bits1, len, int);
ALLOC(bits2, len, int);
ALLOC(thresh, len, int);
ALLOC(trim_offset, len, int);
for (j=start;j<end;j++)
{
/* Below this threshold, we're sure not to allocate any PVQ bits */
thresh[j] = IMAX((C)<<BITRES, (3*(m->eBands[j+1]-m->eBands[j])<<LM<<BITRES)>>4);
/* Tilt of the allocation curve */
trim_offset[j] = C*(m->eBands[j+1]-m->eBands[j])*(alloc_trim-5-LM)*(end-j-1)
*(1<<(LM+BITRES))>>6;
/* Giving less resolution to single-coefficient bands because they get
more benefit from having one coarse value per coefficient*/
if ((m->eBands[j+1]-m->eBands[j])<<LM==1)
trim_offset[j] -= C<<BITRES;
}
lo = 1;
hi = m->nbAllocVectors - 1;
do
{
int done = 0;
int psum = 0;
int mid = (lo+hi) >> 1;
for (j=end;j-->start;)
{
int bitsj;
int N = m->eBands[j+1]-m->eBands[j];
bitsj = C*N*m->allocVectors[mid*len+j]<<LM>>2;
if (bitsj > 0)
bitsj = IMAX(0, bitsj + trim_offset[j]);
bitsj += offsets[j];
if (bitsj >= thresh[j] || done)
{
done = 1;
/* Don't allocate more than we can actually use */
psum += IMIN(bitsj, cap[j]);
} else {
if (bitsj >= C<<BITRES)
psum += C<<BITRES;
}
}
if (psum > total)
hi = mid - 1;
else
lo = mid + 1;
/*printf ("lo = %d, hi = %d\n", lo, hi);*/
}
while (lo <= hi);
hi = lo--;
/*printf ("interp between %d and %d\n", lo, hi);*/
for (j=start;j<end;j++)
{
int bits1j, bits2j;
int N = m->eBands[j+1]-m->eBands[j];
bits1j = C*N*m->allocVectors[lo*len+j]<<LM>>2;
bits2j = hi>=m->nbAllocVectors ?
cap[j] : C*N*m->allocVectors[hi*len+j]<<LM>>2;
if (bits1j > 0)
bits1j = IMAX(0, bits1j + trim_offset[j]);
if (bits2j > 0)
bits2j = IMAX(0, bits2j + trim_offset[j]);
if (lo > 0)
bits1j += offsets[j];
bits2j += offsets[j];
if (offsets[j]>0)
skip_start = j;
bits2j = IMAX(0,bits2j-bits1j);
bits1[j] = bits1j;
bits2[j] = bits2j;
}
codedBands = interp_bits2pulses(m, start, end, skip_start, bits1, bits2, thresh, cap,
total, balance, skip_rsv, intensity, intensity_rsv, dual_stereo, dual_stereo_rsv,
pulses, ebits, fine_priority, C, LM, ec, encode, prev, signalBandwidth);
RESTORE_STACK;
return codedBands;
}

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/* Copyright (c) 2007-2008 CSIRO
Copyright (c) 2007-2009 Xiph.Org Foundation
Written by Jean-Marc Valin */
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef RATE_H
#define RATE_H
#define MAX_PSEUDO 40
#define LOG_MAX_PSEUDO 6
#define MAX_PULSES 128
#define MAX_FINE_BITS 8
#define FINE_OFFSET 21
#define QTHETA_OFFSET 4
#define QTHETA_OFFSET_TWOPHASE 16
#include "cwrs.h"
#include "modes.h"
void compute_pulse_cache(CELTMode *m, int LM);
static OPUS_INLINE int get_pulses(int i)
{
return i<8 ? i : (8 + (i&7)) << ((i>>3)-1);
}
static OPUS_INLINE int bits2pulses(const CELTMode *m, int band, int LM, int bits)
{
int i;
int lo, hi;
const unsigned char *cache;
LM++;
cache = m->cache.bits + m->cache.index[LM*m->nbEBands+band];
lo = 0;
hi = cache[0];
bits--;
for (i=0;i<LOG_MAX_PSEUDO;i++)
{
int mid = (lo+hi+1)>>1;
/* OPT: Make sure this is implemented with a conditional move */
if ((int)cache[mid] >= bits)
hi = mid;
else
lo = mid;
}
if (bits- (lo == 0 ? -1 : (int)cache[lo]) <= (int)cache[hi]-bits)
return lo;
else
return hi;
}
static OPUS_INLINE int pulses2bits(const CELTMode *m, int band, int LM, int pulses)
{
const unsigned char *cache;
LM++;
cache = m->cache.bits + m->cache.index[LM*m->nbEBands+band];
return pulses == 0 ? 0 : cache[pulses]+1;
}
/** Compute the pulse allocation, i.e. how many pulses will go in each
* band.
@param m mode
@param offsets Requested increase or decrease in the number of bits for
each band
@param total Number of bands
@param pulses Number of pulses per band (returned)
@return Total number of bits allocated
*/
int compute_allocation(const CELTMode *m, int start, int end, const int *offsets, const int *cap, int alloc_trim, int *intensity, int *dual_stero,
opus_int32 total, opus_int32 *balance, int *pulses, int *ebits, int *fine_priority, int C, int LM, ec_ctx *ec, int encode, int prev, int signalBandwidth);
#endif

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/* Copyright (C) 2002-2003 Jean-Marc Valin
Copyright (C) 2007-2009 Xiph.Org Foundation */
/**
@file stack_alloc.h
@brief Temporary memory allocation on stack
*/
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef STACK_ALLOC_H
#define STACK_ALLOC_H
#include "opus_types.h"
#include "opus_defines.h"
#if (!defined (VAR_ARRAYS) && !defined (USE_ALLOCA) && !defined (NONTHREADSAFE_PSEUDOSTACK))
#error "Opus requires one of VAR_ARRAYS, USE_ALLOCA, or NONTHREADSAFE_PSEUDOSTACK be defined to select the temporary allocation mode."
#endif
#ifdef USE_ALLOCA
# ifdef WIN32
# include <malloc.h>
# else
# ifdef HAVE_ALLOCA_H
# include <alloca.h>
# else
# include <stdlib.h>
# endif
# endif
#endif
/**
* @def ALIGN(stack, size)
*
* Aligns the stack to a 'size' boundary
*
* @param stack Stack
* @param size New size boundary
*/
/**
* @def PUSH(stack, size, type)
*
* Allocates 'size' elements of type 'type' on the stack
*
* @param stack Stack
* @param size Number of elements
* @param type Type of element
*/
/**
* @def VARDECL(var)
*
* Declare variable on stack
*
* @param var Variable to declare
*/
/**
* @def ALLOC(var, size, type)
*
* Allocate 'size' elements of 'type' on stack
*
* @param var Name of variable to allocate
* @param size Number of elements
* @param type Type of element
*/
#if defined(VAR_ARRAYS)
#define VARDECL(type, var)
#define ALLOC(var, size, type) type var[size]
#define SAVE_STACK
#define RESTORE_STACK
#define ALLOC_STACK
/* C99 does not allow VLAs of size zero */
#define ALLOC_NONE 1
#elif defined(USE_ALLOCA)
#define VARDECL(type, var) type *var
# ifdef WIN32
# define ALLOC(var, size, type) var = ((type*)_alloca(sizeof(type)*(size)))
# else
# define ALLOC(var, size, type) var = ((type*)alloca(sizeof(type)*(size)))
# endif
#define SAVE_STACK
#define RESTORE_STACK
#define ALLOC_STACK
#define ALLOC_NONE 0
#else
#ifdef CELT_C
char *global_stack=0;
#else
extern char *global_stack;
#endif /* CELT_C */
#ifdef ENABLE_VALGRIND
#include <valgrind/memcheck.h>
#ifdef CELT_C
char *global_stack_top=0;
#else
extern char *global_stack_top;
#endif /* CELT_C */
#define ALIGN(stack, size) ((stack) += ((size) - (long)(stack)) & ((size) - 1))
#define PUSH(stack, size, type) (VALGRIND_MAKE_MEM_NOACCESS(stack, global_stack_top-stack),ALIGN((stack),sizeof(type)/sizeof(char)),VALGRIND_MAKE_MEM_UNDEFINED(stack, ((size)*sizeof(type)/sizeof(char))),(stack)+=(2*(size)*sizeof(type)/sizeof(char)),(type*)((stack)-(2*(size)*sizeof(type)/sizeof(char))))
#define RESTORE_STACK ((global_stack = _saved_stack),VALGRIND_MAKE_MEM_NOACCESS(global_stack, global_stack_top-global_stack))
#define ALLOC_STACK char *_saved_stack; ((global_stack = (global_stack==0) ? ((global_stack_top=opus_alloc_scratch(GLOBAL_STACK_SIZE*2)+(GLOBAL_STACK_SIZE*2))-(GLOBAL_STACK_SIZE*2)) : global_stack),VALGRIND_MAKE_MEM_NOACCESS(global_stack, global_stack_top-global_stack)); _saved_stack = global_stack;
#else
#define ALIGN(stack, size) ((stack) += ((size) - (long)(stack)) & ((size) - 1))
#define PUSH(stack, size, type) (ALIGN((stack),sizeof(type)/sizeof(char)),(stack)+=(size)*(sizeof(type)/sizeof(char)),(type*)((stack)-(size)*(sizeof(type)/sizeof(char))))
#define RESTORE_STACK (global_stack = _saved_stack)
#define ALLOC_STACK char *_saved_stack; (global_stack = (global_stack==0) ? opus_alloc_scratch(GLOBAL_STACK_SIZE) : global_stack); _saved_stack = global_stack;
#endif /* ENABLE_VALGRIND */
#include "os_support.h"
#define VARDECL(type, var) type *var
#define ALLOC(var, size, type) var = PUSH(global_stack, size, type)
#define SAVE_STACK char *_saved_stack = global_stack;
#define ALLOC_NONE 0
#endif /* VAR_ARRAYS */
#ifdef ENABLE_VALGRIND
#include <valgrind/memcheck.h>
#define OPUS_CHECK_ARRAY(ptr, len) VALGRIND_CHECK_MEM_IS_DEFINED(ptr, len*sizeof(*ptr))
#define OPUS_CHECK_VALUE(value) VALGRIND_CHECK_VALUE_IS_DEFINED(value)
#define OPUS_CHECK_ARRAY_COND(ptr, len) VALGRIND_CHECK_MEM_IS_DEFINED(ptr, len*sizeof(*ptr))
#define OPUS_CHECK_VALUE_COND(value) VALGRIND_CHECK_VALUE_IS_DEFINED(value)
#define OPUS_PRINT_INT(value) do {fprintf(stderr, #value " = %d at %s:%d\n", value, __FILE__, __LINE__);}while(0)
#define OPUS_FPRINTF fprintf
#else
static OPUS_INLINE int _opus_false(void) {return 0;}
#define OPUS_CHECK_ARRAY(ptr, len) _opus_false()
#define OPUS_CHECK_VALUE(value) _opus_false()
#define OPUS_PRINT_INT(value) do{}while(0)
#define OPUS_FPRINTF (void)
#endif
#endif /* STACK_ALLOC_H */

595
src/engine/external/opus/celt/static_modes_fixed.h vendored Normal file
View file

@ -0,0 +1,595 @@
/* The contents of this file was automatically generated by dump_modes.c
with arguments: 48000 960
It contains static definitions for some pre-defined modes. */
#include "modes.h"
#include "rate.h"
#ifndef DEF_WINDOW120
#define DEF_WINDOW120
static const opus_val16 window120[120] = {
2, 20, 55, 108, 178,
266, 372, 494, 635, 792,
966, 1157, 1365, 1590, 1831,
2089, 2362, 2651, 2956, 3276,
3611, 3961, 4325, 4703, 5094,
5499, 5916, 6346, 6788, 7241,
7705, 8179, 8663, 9156, 9657,
10167, 10684, 11207, 11736, 12271,
12810, 13353, 13899, 14447, 14997,
15547, 16098, 16648, 17197, 17744,
18287, 18827, 19363, 19893, 20418,
20936, 21447, 21950, 22445, 22931,
23407, 23874, 24330, 24774, 25208,
25629, 26039, 26435, 26819, 27190,
27548, 27893, 28224, 28541, 28845,
29135, 29411, 29674, 29924, 30160,
30384, 30594, 30792, 30977, 31151,
31313, 31463, 31602, 31731, 31849,
31958, 32057, 32148, 32229, 32303,
32370, 32429, 32481, 32528, 32568,
32604, 32634, 32661, 32683, 32701,
32717, 32729, 32740, 32748, 32754,
32758, 32762, 32764, 32766, 32767,
32767, 32767, 32767, 32767, 32767,
};
#endif
#ifndef DEF_LOGN400
#define DEF_LOGN400
static const opus_int16 logN400[21] = {
0, 0, 0, 0, 0, 0, 0, 0, 8, 8, 8, 8, 16, 16, 16, 21, 21, 24, 29, 34, 36, };
#endif
#ifndef DEF_PULSE_CACHE50
#define DEF_PULSE_CACHE50
static const opus_int16 cache_index50[105] = {
-1, -1, -1, -1, -1, -1, -1, -1, 0, 0, 0, 0, 41, 41, 41,
82, 82, 123, 164, 200, 222, 0, 0, 0, 0, 0, 0, 0, 0, 41,
41, 41, 41, 123, 123, 123, 164, 164, 240, 266, 283, 295, 41, 41, 41,
41, 41, 41, 41, 41, 123, 123, 123, 123, 240, 240, 240, 266, 266, 305,
318, 328, 336, 123, 123, 123, 123, 123, 123, 123, 123, 240, 240, 240, 240,
305, 305, 305, 318, 318, 343, 351, 358, 364, 240, 240, 240, 240, 240, 240,
240, 240, 305, 305, 305, 305, 343, 343, 343, 351, 351, 370, 376, 382, 387,
};
static const unsigned char cache_bits50[392] = {
40, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 40, 15, 23, 28,
31, 34, 36, 38, 39, 41, 42, 43, 44, 45, 46, 47, 47, 49, 50,
51, 52, 53, 54, 55, 55, 57, 58, 59, 60, 61, 62, 63, 63, 65,
66, 67, 68, 69, 70, 71, 71, 40, 20, 33, 41, 48, 53, 57, 61,
64, 66, 69, 71, 73, 75, 76, 78, 80, 82, 85, 87, 89, 91, 92,
94, 96, 98, 101, 103, 105, 107, 108, 110, 112, 114, 117, 119, 121, 123,
124, 126, 128, 40, 23, 39, 51, 60, 67, 73, 79, 83, 87, 91, 94,
97, 100, 102, 105, 107, 111, 115, 118, 121, 124, 126, 129, 131, 135, 139,
142, 145, 148, 150, 153, 155, 159, 163, 166, 169, 172, 174, 177, 179, 35,
28, 49, 65, 78, 89, 99, 107, 114, 120, 126, 132, 136, 141, 145, 149,
153, 159, 165, 171, 176, 180, 185, 189, 192, 199, 205, 211, 216, 220, 225,
229, 232, 239, 245, 251, 21, 33, 58, 79, 97, 112, 125, 137, 148, 157,
166, 174, 182, 189, 195, 201, 207, 217, 227, 235, 243, 251, 17, 35, 63,
86, 106, 123, 139, 152, 165, 177, 187, 197, 206, 214, 222, 230, 237, 250,
25, 31, 55, 75, 91, 105, 117, 128, 138, 146, 154, 161, 168, 174, 180,
185, 190, 200, 208, 215, 222, 229, 235, 240, 245, 255, 16, 36, 65, 89,
110, 128, 144, 159, 173, 185, 196, 207, 217, 226, 234, 242, 250, 11, 41,
74, 103, 128, 151, 172, 191, 209, 225, 241, 255, 9, 43, 79, 110, 138,
163, 186, 207, 227, 246, 12, 39, 71, 99, 123, 144, 164, 182, 198, 214,
228, 241, 253, 9, 44, 81, 113, 142, 168, 192, 214, 235, 255, 7, 49,
90, 127, 160, 191, 220, 247, 6, 51, 95, 134, 170, 203, 234, 7, 47,
87, 123, 155, 184, 212, 237, 6, 52, 97, 137, 174, 208, 240, 5, 57,
106, 151, 192, 231, 5, 59, 111, 158, 202, 243, 5, 55, 103, 147, 187,
224, 5, 60, 113, 161, 206, 248, 4, 65, 122, 175, 224, 4, 67, 127,
182, 234, };
static const unsigned char cache_caps50[168] = {
224, 224, 224, 224, 224, 224, 224, 224, 160, 160, 160, 160, 185, 185, 185,
178, 178, 168, 134, 61, 37, 224, 224, 224, 224, 224, 224, 224, 224, 240,
240, 240, 240, 207, 207, 207, 198, 198, 183, 144, 66, 40, 160, 160, 160,
160, 160, 160, 160, 160, 185, 185, 185, 185, 193, 193, 193, 183, 183, 172,
138, 64, 38, 240, 240, 240, 240, 240, 240, 240, 240, 207, 207, 207, 207,
204, 204, 204, 193, 193, 180, 143, 66, 40, 185, 185, 185, 185, 185, 185,
185, 185, 193, 193, 193, 193, 193, 193, 193, 183, 183, 172, 138, 65, 39,
207, 207, 207, 207, 207, 207, 207, 207, 204, 204, 204, 204, 201, 201, 201,
188, 188, 176, 141, 66, 40, 193, 193, 193, 193, 193, 193, 193, 193, 193,
193, 193, 193, 194, 194, 194, 184, 184, 173, 139, 65, 39, 204, 204, 204,
204, 204, 204, 204, 204, 201, 201, 201, 201, 198, 198, 198, 187, 187, 175,
140, 66, 40, };
#endif
#ifndef FFT_TWIDDLES48000_960
#define FFT_TWIDDLES48000_960
static const kiss_twiddle_cpx fft_twiddles48000_960[480] = {
{32767, 0}, {32766, -429},
{32757, -858}, {32743, -1287},
{32724, -1715}, {32698, -2143},
{32667, -2570}, {32631, -2998},
{32588, -3425}, {32541, -3851},
{32488, -4277}, {32429, -4701},
{32364, -5125}, {32295, -5548},
{32219, -5971}, {32138, -6393},
{32051, -6813}, {31960, -7231},
{31863, -7650}, {31760, -8067},
{31652, -8481}, {31539, -8895},
{31419, -9306}, {31294, -9716},
{31165, -10126}, {31030, -10532},
{30889, -10937}, {30743, -11340},
{30592, -11741}, {30436, -12141},
{30274, -12540}, {30107, -12935},
{29936, -13328}, {29758, -13718},
{29577, -14107}, {29390, -14493},
{29197, -14875}, {29000, -15257},
{28797, -15635}, {28590, -16010},
{28379, -16384}, {28162, -16753},
{27940, -17119}, {27714, -17484},
{27482, -17845}, {27246, -18205},
{27006, -18560}, {26760, -18911},
{26510, -19260}, {26257, -19606},
{25997, -19947}, {25734, -20286},
{25466, -20621}, {25194, -20952},
{24918, -21281}, {24637, -21605},
{24353, -21926}, {24063, -22242},
{23770, -22555}, {23473, -22865},
{23171, -23171}, {22866, -23472},
{22557, -23769}, {22244, -24063},
{21927, -24352}, {21606, -24636},
{21282, -24917}, {20954, -25194},
{20622, -25465}, {20288, -25733},
{19949, -25997}, {19607, -26255},
{19261, -26509}, {18914, -26760},
{18561, -27004}, {18205, -27246},
{17846, -27481}, {17485, -27713},
{17122, -27940}, {16755, -28162},
{16385, -28378}, {16012, -28590},
{15636, -28797}, {15258, -28999},
{14878, -29197}, {14494, -29389},
{14108, -29576}, {13720, -29757},
{13329, -29934}, {12937, -30107},
{12540, -30274}, {12142, -30435},
{11744, -30592}, {11342, -30743},
{10939, -30889}, {10534, -31030},
{10127, -31164}, {9718, -31294},
{9307, -31418}, {8895, -31537},
{8482, -31652}, {8067, -31759},
{7650, -31862}, {7233, -31960},
{6815, -32051}, {6393, -32138},
{5973, -32219}, {5549, -32294},
{5127, -32364}, {4703, -32429},
{4278, -32487}, {3852, -32541},
{3426, -32588}, {2999, -32630},
{2572, -32667}, {2144, -32698},
{1716, -32724}, {1287, -32742},
{860, -32757}, {430, -32766},
{0, -32767}, {-429, -32766},
{-858, -32757}, {-1287, -32743},
{-1715, -32724}, {-2143, -32698},
{-2570, -32667}, {-2998, -32631},
{-3425, -32588}, {-3851, -32541},
{-4277, -32488}, {-4701, -32429},
{-5125, -32364}, {-5548, -32295},
{-5971, -32219}, {-6393, -32138},
{-6813, -32051}, {-7231, -31960},
{-7650, -31863}, {-8067, -31760},
{-8481, -31652}, {-8895, -31539},
{-9306, -31419}, {-9716, -31294},
{-10126, -31165}, {-10532, -31030},
{-10937, -30889}, {-11340, -30743},
{-11741, -30592}, {-12141, -30436},
{-12540, -30274}, {-12935, -30107},
{-13328, -29936}, {-13718, -29758},
{-14107, -29577}, {-14493, -29390},
{-14875, -29197}, {-15257, -29000},
{-15635, -28797}, {-16010, -28590},
{-16384, -28379}, {-16753, -28162},
{-17119, -27940}, {-17484, -27714},
{-17845, -27482}, {-18205, -27246},
{-18560, -27006}, {-18911, -26760},
{-19260, -26510}, {-19606, -26257},
{-19947, -25997}, {-20286, -25734},
{-20621, -25466}, {-20952, -25194},
{-21281, -24918}, {-21605, -24637},
{-21926, -24353}, {-22242, -24063},
{-22555, -23770}, {-22865, -23473},
{-23171, -23171}, {-23472, -22866},
{-23769, -22557}, {-24063, -22244},
{-24352, -21927}, {-24636, -21606},
{-24917, -21282}, {-25194, -20954},
{-25465, -20622}, {-25733, -20288},
{-25997, -19949}, {-26255, -19607},
{-26509, -19261}, {-26760, -18914},
{-27004, -18561}, {-27246, -18205},
{-27481, -17846}, {-27713, -17485},
{-27940, -17122}, {-28162, -16755},
{-28378, -16385}, {-28590, -16012},
{-28797, -15636}, {-28999, -15258},
{-29197, -14878}, {-29389, -14494},
{-29576, -14108}, {-29757, -13720},
{-29934, -13329}, {-30107, -12937},
{-30274, -12540}, {-30435, -12142},
{-30592, -11744}, {-30743, -11342},
{-30889, -10939}, {-31030, -10534},
{-31164, -10127}, {-31294, -9718},
{-31418, -9307}, {-31537, -8895},
{-31652, -8482}, {-31759, -8067},
{-31862, -7650}, {-31960, -7233},
{-32051, -6815}, {-32138, -6393},
{-32219, -5973}, {-32294, -5549},
{-32364, -5127}, {-32429, -4703},
{-32487, -4278}, {-32541, -3852},
{-32588, -3426}, {-32630, -2999},
{-32667, -2572}, {-32698, -2144},
{-32724, -1716}, {-32742, -1287},
{-32757, -860}, {-32766, -430},
{-32767, 0}, {-32766, 429},
{-32757, 858}, {-32743, 1287},
{-32724, 1715}, {-32698, 2143},
{-32667, 2570}, {-32631, 2998},
{-32588, 3425}, {-32541, 3851},
{-32488, 4277}, {-32429, 4701},
{-32364, 5125}, {-32295, 5548},
{-32219, 5971}, {-32138, 6393},
{-32051, 6813}, {-31960, 7231},
{-31863, 7650}, {-31760, 8067},
{-31652, 8481}, {-31539, 8895},
{-31419, 9306}, {-31294, 9716},
{-31165, 10126}, {-31030, 10532},
{-30889, 10937}, {-30743, 11340},
{-30592, 11741}, {-30436, 12141},
{-30274, 12540}, {-30107, 12935},
{-29936, 13328}, {-29758, 13718},
{-29577, 14107}, {-29390, 14493},
{-29197, 14875}, {-29000, 15257},
{-28797, 15635}, {-28590, 16010},
{-28379, 16384}, {-28162, 16753},
{-27940, 17119}, {-27714, 17484},
{-27482, 17845}, {-27246, 18205},
{-27006, 18560}, {-26760, 18911},
{-26510, 19260}, {-26257, 19606},
{-25997, 19947}, {-25734, 20286},
{-25466, 20621}, {-25194, 20952},
{-24918, 21281}, {-24637, 21605},
{-24353, 21926}, {-24063, 22242},
{-23770, 22555}, {-23473, 22865},
{-23171, 23171}, {-22866, 23472},
{-22557, 23769}, {-22244, 24063},
{-21927, 24352}, {-21606, 24636},
{-21282, 24917}, {-20954, 25194},
{-20622, 25465}, {-20288, 25733},
{-19949, 25997}, {-19607, 26255},
{-19261, 26509}, {-18914, 26760},
{-18561, 27004}, {-18205, 27246},
{-17846, 27481}, {-17485, 27713},
{-17122, 27940}, {-16755, 28162},
{-16385, 28378}, {-16012, 28590},
{-15636, 28797}, {-15258, 28999},
{-14878, 29197}, {-14494, 29389},
{-14108, 29576}, {-13720, 29757},
{-13329, 29934}, {-12937, 30107},
{-12540, 30274}, {-12142, 30435},
{-11744, 30592}, {-11342, 30743},
{-10939, 30889}, {-10534, 31030},
{-10127, 31164}, {-9718, 31294},
{-9307, 31418}, {-8895, 31537},
{-8482, 31652}, {-8067, 31759},
{-7650, 31862}, {-7233, 31960},
{-6815, 32051}, {-6393, 32138},
{-5973, 32219}, {-5549, 32294},
{-5127, 32364}, {-4703, 32429},
{-4278, 32487}, {-3852, 32541},
{-3426, 32588}, {-2999, 32630},
{-2572, 32667}, {-2144, 32698},
{-1716, 32724}, {-1287, 32742},
{-860, 32757}, {-430, 32766},
{0, 32767}, {429, 32766},
{858, 32757}, {1287, 32743},
{1715, 32724}, {2143, 32698},
{2570, 32667}, {2998, 32631},
{3425, 32588}, {3851, 32541},
{4277, 32488}, {4701, 32429},
{5125, 32364}, {5548, 32295},
{5971, 32219}, {6393, 32138},
{6813, 32051}, {7231, 31960},
{7650, 31863}, {8067, 31760},
{8481, 31652}, {8895, 31539},
{9306, 31419}, {9716, 31294},
{10126, 31165}, {10532, 31030},
{10937, 30889}, {11340, 30743},
{11741, 30592}, {12141, 30436},
{12540, 30274}, {12935, 30107},
{13328, 29936}, {13718, 29758},
{14107, 29577}, {14493, 29390},
{14875, 29197}, {15257, 29000},
{15635, 28797}, {16010, 28590},
{16384, 28379}, {16753, 28162},
{17119, 27940}, {17484, 27714},
{17845, 27482}, {18205, 27246},
{18560, 27006}, {18911, 26760},
{19260, 26510}, {19606, 26257},
{19947, 25997}, {20286, 25734},
{20621, 25466}, {20952, 25194},
{21281, 24918}, {21605, 24637},
{21926, 24353}, {22242, 24063},
{22555, 23770}, {22865, 23473},
{23171, 23171}, {23472, 22866},
{23769, 22557}, {24063, 22244},
{24352, 21927}, {24636, 21606},
{24917, 21282}, {25194, 20954},
{25465, 20622}, {25733, 20288},
{25997, 19949}, {26255, 19607},
{26509, 19261}, {26760, 18914},
{27004, 18561}, {27246, 18205},
{27481, 17846}, {27713, 17485},
{27940, 17122}, {28162, 16755},
{28378, 16385}, {28590, 16012},
{28797, 15636}, {28999, 15258},
{29197, 14878}, {29389, 14494},
{29576, 14108}, {29757, 13720},
{29934, 13329}, {30107, 12937},
{30274, 12540}, {30435, 12142},
{30592, 11744}, {30743, 11342},
{30889, 10939}, {31030, 10534},
{31164, 10127}, {31294, 9718},
{31418, 9307}, {31537, 8895},
{31652, 8482}, {31759, 8067},
{31862, 7650}, {31960, 7233},
{32051, 6815}, {32138, 6393},
{32219, 5973}, {32294, 5549},
{32364, 5127}, {32429, 4703},
{32487, 4278}, {32541, 3852},
{32588, 3426}, {32630, 2999},
{32667, 2572}, {32698, 2144},
{32724, 1716}, {32742, 1287},
{32757, 860}, {32766, 430},
};
#ifndef FFT_BITREV480
#define FFT_BITREV480
static const opus_int16 fft_bitrev480[480] = {
0, 120, 240, 360, 30, 150, 270, 390, 60, 180, 300, 420, 90, 210, 330,
450, 15, 135, 255, 375, 45, 165, 285, 405, 75, 195, 315, 435, 105, 225,
345, 465, 5, 125, 245, 365, 35, 155, 275, 395, 65, 185, 305, 425, 95,
215, 335, 455, 20, 140, 260, 380, 50, 170, 290, 410, 80, 200, 320, 440,
110, 230, 350, 470, 10, 130, 250, 370, 40, 160, 280, 400, 70, 190, 310,
430, 100, 220, 340, 460, 25, 145, 265, 385, 55, 175, 295, 415, 85, 205,
325, 445, 115, 235, 355, 475, 1, 121, 241, 361, 31, 151, 271, 391, 61,
181, 301, 421, 91, 211, 331, 451, 16, 136, 256, 376, 46, 166, 286, 406,
76, 196, 316, 436, 106, 226, 346, 466, 6, 126, 246, 366, 36, 156, 276,
396, 66, 186, 306, 426, 96, 216, 336, 456, 21, 141, 261, 381, 51, 171,
291, 411, 81, 201, 321, 441, 111, 231, 351, 471, 11, 131, 251, 371, 41,
161, 281, 401, 71, 191, 311, 431, 101, 221, 341, 461, 26, 146, 266, 386,
56, 176, 296, 416, 86, 206, 326, 446, 116, 236, 356, 476, 2, 122, 242,
362, 32, 152, 272, 392, 62, 182, 302, 422, 92, 212, 332, 452, 17, 137,
257, 377, 47, 167, 287, 407, 77, 197, 317, 437, 107, 227, 347, 467, 7,
127, 247, 367, 37, 157, 277, 397, 67, 187, 307, 427, 97, 217, 337, 457,
22, 142, 262, 382, 52, 172, 292, 412, 82, 202, 322, 442, 112, 232, 352,
472, 12, 132, 252, 372, 42, 162, 282, 402, 72, 192, 312, 432, 102, 222,
342, 462, 27, 147, 267, 387, 57, 177, 297, 417, 87, 207, 327, 447, 117,
237, 357, 477, 3, 123, 243, 363, 33, 153, 273, 393, 63, 183, 303, 423,
93, 213, 333, 453, 18, 138, 258, 378, 48, 168, 288, 408, 78, 198, 318,
438, 108, 228, 348, 468, 8, 128, 248, 368, 38, 158, 278, 398, 68, 188,
308, 428, 98, 218, 338, 458, 23, 143, 263, 383, 53, 173, 293, 413, 83,
203, 323, 443, 113, 233, 353, 473, 13, 133, 253, 373, 43, 163, 283, 403,
73, 193, 313, 433, 103, 223, 343, 463, 28, 148, 268, 388, 58, 178, 298,
418, 88, 208, 328, 448, 118, 238, 358, 478, 4, 124, 244, 364, 34, 154,
274, 394, 64, 184, 304, 424, 94, 214, 334, 454, 19, 139, 259, 379, 49,
169, 289, 409, 79, 199, 319, 439, 109, 229, 349, 469, 9, 129, 249, 369,
39, 159, 279, 399, 69, 189, 309, 429, 99, 219, 339, 459, 24, 144, 264,
384, 54, 174, 294, 414, 84, 204, 324, 444, 114, 234, 354, 474, 14, 134,
254, 374, 44, 164, 284, 404, 74, 194, 314, 434, 104, 224, 344, 464, 29,
149, 269, 389, 59, 179, 299, 419, 89, 209, 329, 449, 119, 239, 359, 479,
};
#endif
#ifndef FFT_BITREV240
#define FFT_BITREV240
static const opus_int16 fft_bitrev240[240] = {
0, 60, 120, 180, 15, 75, 135, 195, 30, 90, 150, 210, 45, 105, 165,
225, 5, 65, 125, 185, 20, 80, 140, 200, 35, 95, 155, 215, 50, 110,
170, 230, 10, 70, 130, 190, 25, 85, 145, 205, 40, 100, 160, 220, 55,
115, 175, 235, 1, 61, 121, 181, 16, 76, 136, 196, 31, 91, 151, 211,
46, 106, 166, 226, 6, 66, 126, 186, 21, 81, 141, 201, 36, 96, 156,
216, 51, 111, 171, 231, 11, 71, 131, 191, 26, 86, 146, 206, 41, 101,
161, 221, 56, 116, 176, 236, 2, 62, 122, 182, 17, 77, 137, 197, 32,
92, 152, 212, 47, 107, 167, 227, 7, 67, 127, 187, 22, 82, 142, 202,
37, 97, 157, 217, 52, 112, 172, 232, 12, 72, 132, 192, 27, 87, 147,
207, 42, 102, 162, 222, 57, 117, 177, 237, 3, 63, 123, 183, 18, 78,
138, 198, 33, 93, 153, 213, 48, 108, 168, 228, 8, 68, 128, 188, 23,
83, 143, 203, 38, 98, 158, 218, 53, 113, 173, 233, 13, 73, 133, 193,
28, 88, 148, 208, 43, 103, 163, 223, 58, 118, 178, 238, 4, 64, 124,
184, 19, 79, 139, 199, 34, 94, 154, 214, 49, 109, 169, 229, 9, 69,
129, 189, 24, 84, 144, 204, 39, 99, 159, 219, 54, 114, 174, 234, 14,
74, 134, 194, 29, 89, 149, 209, 44, 104, 164, 224, 59, 119, 179, 239,
};
#endif
#ifndef FFT_BITREV120
#define FFT_BITREV120
static const opus_int16 fft_bitrev120[120] = {
0, 30, 60, 90, 15, 45, 75, 105, 5, 35, 65, 95, 20, 50, 80,
110, 10, 40, 70, 100, 25, 55, 85, 115, 1, 31, 61, 91, 16, 46,
76, 106, 6, 36, 66, 96, 21, 51, 81, 111, 11, 41, 71, 101, 26,
56, 86, 116, 2, 32, 62, 92, 17, 47, 77, 107, 7, 37, 67, 97,
22, 52, 82, 112, 12, 42, 72, 102, 27, 57, 87, 117, 3, 33, 63,
93, 18, 48, 78, 108, 8, 38, 68, 98, 23, 53, 83, 113, 13, 43,
73, 103, 28, 58, 88, 118, 4, 34, 64, 94, 19, 49, 79, 109, 9,
39, 69, 99, 24, 54, 84, 114, 14, 44, 74, 104, 29, 59, 89, 119,
};
#endif
#ifndef FFT_BITREV60
#define FFT_BITREV60
static const opus_int16 fft_bitrev60[60] = {
0, 15, 30, 45, 5, 20, 35, 50, 10, 25, 40, 55, 1, 16, 31,
46, 6, 21, 36, 51, 11, 26, 41, 56, 2, 17, 32, 47, 7, 22,
37, 52, 12, 27, 42, 57, 3, 18, 33, 48, 8, 23, 38, 53, 13,
28, 43, 58, 4, 19, 34, 49, 9, 24, 39, 54, 14, 29, 44, 59,
};
#endif
#ifndef FFT_STATE48000_960_0
#define FFT_STATE48000_960_0
static const kiss_fft_state fft_state48000_960_0 = {
480, /* nfft */
-1, /* shift */
{4, 120, 4, 30, 2, 15, 3, 5, 5, 1, 0, 0, 0, 0, 0, 0, }, /* factors */
fft_bitrev480, /* bitrev */
fft_twiddles48000_960, /* bitrev */
};
#endif
#ifndef FFT_STATE48000_960_1
#define FFT_STATE48000_960_1
static const kiss_fft_state fft_state48000_960_1 = {
240, /* nfft */
1, /* shift */
{4, 60, 4, 15, 3, 5, 5, 1, 0, 0, 0, 0, 0, 0, 0, 0, }, /* factors */
fft_bitrev240, /* bitrev */
fft_twiddles48000_960, /* bitrev */
};
#endif
#ifndef FFT_STATE48000_960_2
#define FFT_STATE48000_960_2
static const kiss_fft_state fft_state48000_960_2 = {
120, /* nfft */
2, /* shift */
{4, 30, 2, 15, 3, 5, 5, 1, 0, 0, 0, 0, 0, 0, 0, 0, }, /* factors */
fft_bitrev120, /* bitrev */
fft_twiddles48000_960, /* bitrev */
};
#endif
#ifndef FFT_STATE48000_960_3
#define FFT_STATE48000_960_3
static const kiss_fft_state fft_state48000_960_3 = {
60, /* nfft */
3, /* shift */
{4, 15, 3, 5, 5, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, }, /* factors */
fft_bitrev60, /* bitrev */
fft_twiddles48000_960, /* bitrev */
};
#endif
#endif
#ifndef MDCT_TWIDDLES960
#define MDCT_TWIDDLES960
static const opus_val16 mdct_twiddles960[481] = {
32767, 32767, 32767, 32767, 32766,
32763, 32762, 32759, 32757, 32753,
32751, 32747, 32743, 32738, 32733,
32729, 32724, 32717, 32711, 32705,
32698, 32690, 32683, 32676, 32667,
32658, 32650, 32640, 32631, 32620,
32610, 32599, 32588, 32577, 32566,
32554, 32541, 32528, 32515, 32502,
32487, 32474, 32459, 32444, 32429,
32413, 32397, 32381, 32364, 32348,
32331, 32313, 32294, 32277, 32257,
32239, 32219, 32200, 32180, 32159,
32138, 32118, 32096, 32074, 32051,
32029, 32006, 31984, 31960, 31936,
31912, 31888, 31863, 31837, 31812,
31786, 31760, 31734, 31707, 31679,
31652, 31624, 31596, 31567, 31539,
31508, 31479, 31450, 31419, 31388,
31357, 31326, 31294, 31262, 31230,
31198, 31164, 31131, 31097, 31063,
31030, 30994, 30959, 30924, 30889,
30853, 30816, 30779, 30743, 30705,
30668, 30629, 30592, 30553, 30515,
30475, 30435, 30396, 30356, 30315,
30274, 30233, 30191, 30149, 30107,
30065, 30022, 29979, 29936, 29891,
29847, 29803, 29758, 29713, 29668,
29622, 29577, 29529, 29483, 29436,
29390, 29341, 29293, 29246, 29197,
29148, 29098, 29050, 29000, 28949,
28899, 28848, 28797, 28746, 28694,
28642, 28590, 28537, 28485, 28432,
28378, 28324, 28271, 28217, 28162,
28106, 28051, 27995, 27940, 27884,
27827, 27770, 27713, 27657, 27598,
27540, 27481, 27423, 27365, 27305,
27246, 27187, 27126, 27066, 27006,
26945, 26883, 26822, 26760, 26698,
26636, 26574, 26510, 26448, 26383,
26320, 26257, 26191, 26127, 26062,
25997, 25931, 25866, 25800, 25734,
25667, 25601, 25533, 25466, 25398,
25330, 25262, 25194, 25125, 25056,
24987, 24917, 24848, 24778, 24707,
24636, 24566, 24495, 24424, 24352,
24280, 24208, 24135, 24063, 23990,
23917, 23842, 23769, 23695, 23622,
23546, 23472, 23398, 23322, 23246,
23171, 23095, 23018, 22942, 22866,
22788, 22711, 22634, 22557, 22478,
22400, 22322, 22244, 22165, 22085,
22006, 21927, 21846, 21766, 21687,
21606, 21524, 21443, 21363, 21282,
21199, 21118, 21035, 20954, 20870,
20788, 20705, 20621, 20538, 20455,
20371, 20286, 20202, 20118, 20034,
19947, 19863, 19777, 19692, 19606,
19520, 19434, 19347, 19260, 19174,
19088, 18999, 18911, 18825, 18737,
18648, 18560, 18472, 18384, 18294,
18205, 18116, 18025, 17936, 17846,
17757, 17666, 17576, 17485, 17395,
17303, 17212, 17122, 17030, 16937,
16846, 16755, 16662, 16569, 16477,
16385, 16291, 16198, 16105, 16012,
15917, 15824, 15730, 15636, 15541,
15447, 15352, 15257, 15162, 15067,
14973, 14875, 14781, 14685, 14589,
14493, 14396, 14300, 14204, 14107,
14010, 13914, 13815, 13718, 13621,
13524, 13425, 13328, 13230, 13133,
13033, 12935, 12836, 12738, 12638,
12540, 12441, 12341, 12241, 12142,
12044, 11943, 11843, 11744, 11643,
11542, 11442, 11342, 11241, 11139,
11039, 10939, 10836, 10736, 10635,
10534, 10431, 10330, 10228, 10127,
10024, 9921, 9820, 9718, 9614,
9512, 9410, 9306, 9204, 9101,
8998, 8895, 8791, 8689, 8585,
8481, 8377, 8274, 8171, 8067,
7962, 7858, 7753, 7650, 7545,
7441, 7336, 7231, 7129, 7023,
6917, 6813, 6709, 6604, 6498,
6393, 6288, 6182, 6077, 5973,
5867, 5760, 5656, 5549, 5445,
5339, 5232, 5127, 5022, 4914,
4809, 4703, 4596, 4490, 4384,
4278, 4171, 4065, 3958, 3852,
3745, 3640, 3532, 3426, 3318,
3212, 3106, 2998, 2891, 2786,
2679, 2570, 2465, 2358, 2251,
2143, 2037, 1929, 1823, 1715,
1609, 1501, 1393, 1287, 1180,
1073, 964, 858, 751, 644,
535, 429, 322, 214, 107,
0, };
#endif
static const CELTMode mode48000_960_120 = {
48000, /* Fs */
120, /* overlap */
21, /* nbEBands */
21, /* effEBands */
{27853, 0, 4096, 8192, }, /* preemph */
eband5ms, /* eBands */
3, /* maxLM */
8, /* nbShortMdcts */
120, /* shortMdctSize */
11, /* nbAllocVectors */
band_allocation, /* allocVectors */
logN400, /* logN */
window120, /* window */
{1920, 3, {&fft_state48000_960_0, &fft_state48000_960_1, &fft_state48000_960_2, &fft_state48000_960_3, }, mdct_twiddles960}, /* mdct */
{392, cache_index50, cache_bits50, cache_caps50}, /* cache */
};
/* List of all the available modes */
#define TOTAL_MODES 1
static const CELTMode * const static_mode_list[TOTAL_MODES] = {
&mode48000_960_120,
};

599
src/engine/external/opus/celt/static_modes_float.h vendored Normal file
View file

@ -0,0 +1,599 @@
/* The contents of this file was automatically generated by dump_modes.c
with arguments: 48000 960
It contains static definitions for some pre-defined modes. */
#include "modes.h"
#include "rate.h"
#ifndef DEF_WINDOW120
#define DEF_WINDOW120
static const opus_val16 window120[120] = {
6.7286966e-05f, 0.00060551348f, 0.0016815970f, 0.0032947962f, 0.0054439943f,
0.0081276923f, 0.011344001f, 0.015090633f, 0.019364886f, 0.024163635f,
0.029483315f, 0.035319905f, 0.041668911f, 0.048525347f, 0.055883718f,
0.063737999f, 0.072081616f, 0.080907428f, 0.090207705f, 0.099974111f,
0.11019769f, 0.12086883f, 0.13197729f, 0.14351214f, 0.15546177f,
0.16781389f, 0.18055550f, 0.19367290f, 0.20715171f, 0.22097682f,
0.23513243f, 0.24960208f, 0.26436860f, 0.27941419f, 0.29472040f,
0.31026818f, 0.32603788f, 0.34200931f, 0.35816177f, 0.37447407f,
0.39092462f, 0.40749142f, 0.42415215f, 0.44088423f, 0.45766484f,
0.47447104f, 0.49127978f, 0.50806798f, 0.52481261f, 0.54149077f,
0.55807973f, 0.57455701f, 0.59090049f, 0.60708841f, 0.62309951f,
0.63891306f, 0.65450896f, 0.66986776f, 0.68497077f, 0.69980010f,
0.71433873f, 0.72857055f, 0.74248043f, 0.75605424f, 0.76927895f,
0.78214257f, 0.79463430f, 0.80674445f, 0.81846456f, 0.82978733f,
0.84070669f, 0.85121779f, 0.86131698f, 0.87100183f, 0.88027111f,
0.88912479f, 0.89756398f, 0.90559094f, 0.91320904f, 0.92042270f,
0.92723738f, 0.93365955f, 0.93969656f, 0.94535671f, 0.95064907f,
0.95558353f, 0.96017067f, 0.96442171f, 0.96834849f, 0.97196334f,
0.97527906f, 0.97830883f, 0.98106616f, 0.98356480f, 0.98581869f,
0.98784191f, 0.98964856f, 0.99125274f, 0.99266849f, 0.99390969f,
0.99499004f, 0.99592297f, 0.99672162f, 0.99739874f, 0.99796667f,
0.99843728f, 0.99882195f, 0.99913147f, 0.99937606f, 0.99956527f,
0.99970802f, 0.99981248f, 0.99988613f, 0.99993565f, 0.99996697f,
0.99998518f, 0.99999457f, 0.99999859f, 0.99999982f, 1.0000000f,
};
#endif
#ifndef DEF_LOGN400
#define DEF_LOGN400
static const opus_int16 logN400[21] = {
0, 0, 0, 0, 0, 0, 0, 0, 8, 8, 8, 8, 16, 16, 16, 21, 21, 24, 29, 34, 36, };
#endif
#ifndef DEF_PULSE_CACHE50
#define DEF_PULSE_CACHE50
static const opus_int16 cache_index50[105] = {
-1, -1, -1, -1, -1, -1, -1, -1, 0, 0, 0, 0, 41, 41, 41,
82, 82, 123, 164, 200, 222, 0, 0, 0, 0, 0, 0, 0, 0, 41,
41, 41, 41, 123, 123, 123, 164, 164, 240, 266, 283, 295, 41, 41, 41,
41, 41, 41, 41, 41, 123, 123, 123, 123, 240, 240, 240, 266, 266, 305,
318, 328, 336, 123, 123, 123, 123, 123, 123, 123, 123, 240, 240, 240, 240,
305, 305, 305, 318, 318, 343, 351, 358, 364, 240, 240, 240, 240, 240, 240,
240, 240, 305, 305, 305, 305, 343, 343, 343, 351, 351, 370, 376, 382, 387,
};
static const unsigned char cache_bits50[392] = {
40, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 40, 15, 23, 28,
31, 34, 36, 38, 39, 41, 42, 43, 44, 45, 46, 47, 47, 49, 50,
51, 52, 53, 54, 55, 55, 57, 58, 59, 60, 61, 62, 63, 63, 65,
66, 67, 68, 69, 70, 71, 71, 40, 20, 33, 41, 48, 53, 57, 61,
64, 66, 69, 71, 73, 75, 76, 78, 80, 82, 85, 87, 89, 91, 92,
94, 96, 98, 101, 103, 105, 107, 108, 110, 112, 114, 117, 119, 121, 123,
124, 126, 128, 40, 23, 39, 51, 60, 67, 73, 79, 83, 87, 91, 94,
97, 100, 102, 105, 107, 111, 115, 118, 121, 124, 126, 129, 131, 135, 139,
142, 145, 148, 150, 153, 155, 159, 163, 166, 169, 172, 174, 177, 179, 35,
28, 49, 65, 78, 89, 99, 107, 114, 120, 126, 132, 136, 141, 145, 149,
153, 159, 165, 171, 176, 180, 185, 189, 192, 199, 205, 211, 216, 220, 225,
229, 232, 239, 245, 251, 21, 33, 58, 79, 97, 112, 125, 137, 148, 157,
166, 174, 182, 189, 195, 201, 207, 217, 227, 235, 243, 251, 17, 35, 63,
86, 106, 123, 139, 152, 165, 177, 187, 197, 206, 214, 222, 230, 237, 250,
25, 31, 55, 75, 91, 105, 117, 128, 138, 146, 154, 161, 168, 174, 180,
185, 190, 200, 208, 215, 222, 229, 235, 240, 245, 255, 16, 36, 65, 89,
110, 128, 144, 159, 173, 185, 196, 207, 217, 226, 234, 242, 250, 11, 41,
74, 103, 128, 151, 172, 191, 209, 225, 241, 255, 9, 43, 79, 110, 138,
163, 186, 207, 227, 246, 12, 39, 71, 99, 123, 144, 164, 182, 198, 214,
228, 241, 253, 9, 44, 81, 113, 142, 168, 192, 214, 235, 255, 7, 49,
90, 127, 160, 191, 220, 247, 6, 51, 95, 134, 170, 203, 234, 7, 47,
87, 123, 155, 184, 212, 237, 6, 52, 97, 137, 174, 208, 240, 5, 57,
106, 151, 192, 231, 5, 59, 111, 158, 202, 243, 5, 55, 103, 147, 187,
224, 5, 60, 113, 161, 206, 248, 4, 65, 122, 175, 224, 4, 67, 127,
182, 234, };
static const unsigned char cache_caps50[168] = {
224, 224, 224, 224, 224, 224, 224, 224, 160, 160, 160, 160, 185, 185, 185,
178, 178, 168, 134, 61, 37, 224, 224, 224, 224, 224, 224, 224, 224, 240,
240, 240, 240, 207, 207, 207, 198, 198, 183, 144, 66, 40, 160, 160, 160,
160, 160, 160, 160, 160, 185, 185, 185, 185, 193, 193, 193, 183, 183, 172,
138, 64, 38, 240, 240, 240, 240, 240, 240, 240, 240, 207, 207, 207, 207,
204, 204, 204, 193, 193, 180, 143, 66, 40, 185, 185, 185, 185, 185, 185,
185, 185, 193, 193, 193, 193, 193, 193, 193, 183, 183, 172, 138, 65, 39,
207, 207, 207, 207, 207, 207, 207, 207, 204, 204, 204, 204, 201, 201, 201,
188, 188, 176, 141, 66, 40, 193, 193, 193, 193, 193, 193, 193, 193, 193,
193, 193, 193, 194, 194, 194, 184, 184, 173, 139, 65, 39, 204, 204, 204,
204, 204, 204, 204, 204, 201, 201, 201, 201, 198, 198, 198, 187, 187, 175,
140, 66, 40, };
#endif
#ifndef FFT_TWIDDLES48000_960
#define FFT_TWIDDLES48000_960
static const kiss_twiddle_cpx fft_twiddles48000_960[480] = {
{1.0000000f, -0.0000000f}, {0.99991433f, -0.013089596f},
{0.99965732f, -0.026176948f}, {0.99922904f, -0.039259816f},
{0.99862953f, -0.052335956f}, {0.99785892f, -0.065403129f},
{0.99691733f, -0.078459096f}, {0.99580493f, -0.091501619f},
{0.99452190f, -0.10452846f}, {0.99306846f, -0.11753740f},
{0.99144486f, -0.13052619f}, {0.98965139f, -0.14349262f},
{0.98768834f, -0.15643447f}, {0.98555606f, -0.16934950f},
{0.98325491f, -0.18223553f}, {0.98078528f, -0.19509032f},
{0.97814760f, -0.20791169f}, {0.97534232f, -0.22069744f},
{0.97236992f, -0.23344536f}, {0.96923091f, -0.24615329f},
{0.96592583f, -0.25881905f}, {0.96245524f, -0.27144045f},
{0.95881973f, -0.28401534f}, {0.95501994f, -0.29654157f},
{0.95105652f, -0.30901699f}, {0.94693013f, -0.32143947f},
{0.94264149f, -0.33380686f}, {0.93819134f, -0.34611706f},
{0.93358043f, -0.35836795f}, {0.92880955f, -0.37055744f},
{0.92387953f, -0.38268343f}, {0.91879121f, -0.39474386f},
{0.91354546f, -0.40673664f}, {0.90814317f, -0.41865974f},
{0.90258528f, -0.43051110f}, {0.89687274f, -0.44228869f},
{0.89100652f, -0.45399050f}, {0.88498764f, -0.46561452f},
{0.87881711f, -0.47715876f}, {0.87249601f, -0.48862124f},
{0.86602540f, -0.50000000f}, {0.85940641f, -0.51129309f},
{0.85264016f, -0.52249856f}, {0.84572782f, -0.53361452f},
{0.83867057f, -0.54463904f}, {0.83146961f, -0.55557023f},
{0.82412619f, -0.56640624f}, {0.81664156f, -0.57714519f},
{0.80901699f, -0.58778525f}, {0.80125381f, -0.59832460f},
{0.79335334f, -0.60876143f}, {0.78531693f, -0.61909395f},
{0.77714596f, -0.62932039f}, {0.76884183f, -0.63943900f},
{0.76040597f, -0.64944805f}, {0.75183981f, -0.65934582f},
{0.74314483f, -0.66913061f}, {0.73432251f, -0.67880075f},
{0.72537437f, -0.68835458f}, {0.71630194f, -0.69779046f},
{0.70710678f, -0.70710678f}, {0.69779046f, -0.71630194f},
{0.68835458f, -0.72537437f}, {0.67880075f, -0.73432251f},
{0.66913061f, -0.74314483f}, {0.65934582f, -0.75183981f},
{0.64944805f, -0.76040597f}, {0.63943900f, -0.76884183f},
{0.62932039f, -0.77714596f}, {0.61909395f, -0.78531693f},
{0.60876143f, -0.79335334f}, {0.59832460f, -0.80125381f},
{0.58778525f, -0.80901699f}, {0.57714519f, -0.81664156f},
{0.56640624f, -0.82412619f}, {0.55557023f, -0.83146961f},
{0.54463904f, -0.83867057f}, {0.53361452f, -0.84572782f},
{0.52249856f, -0.85264016f}, {0.51129309f, -0.85940641f},
{0.50000000f, -0.86602540f}, {0.48862124f, -0.87249601f},
{0.47715876f, -0.87881711f}, {0.46561452f, -0.88498764f},
{0.45399050f, -0.89100652f}, {0.44228869f, -0.89687274f},
{0.43051110f, -0.90258528f}, {0.41865974f, -0.90814317f},
{0.40673664f, -0.91354546f}, {0.39474386f, -0.91879121f},
{0.38268343f, -0.92387953f}, {0.37055744f, -0.92880955f},
{0.35836795f, -0.93358043f}, {0.34611706f, -0.93819134f},
{0.33380686f, -0.94264149f}, {0.32143947f, -0.94693013f},
{0.30901699f, -0.95105652f}, {0.29654157f, -0.95501994f},
{0.28401534f, -0.95881973f}, {0.27144045f, -0.96245524f},
{0.25881905f, -0.96592583f}, {0.24615329f, -0.96923091f},
{0.23344536f, -0.97236992f}, {0.22069744f, -0.97534232f},
{0.20791169f, -0.97814760f}, {0.19509032f, -0.98078528f},
{0.18223553f, -0.98325491f}, {0.16934950f, -0.98555606f},
{0.15643447f, -0.98768834f}, {0.14349262f, -0.98965139f},
{0.13052619f, -0.99144486f}, {0.11753740f, -0.99306846f},
{0.10452846f, -0.99452190f}, {0.091501619f, -0.99580493f},
{0.078459096f, -0.99691733f}, {0.065403129f, -0.99785892f},
{0.052335956f, -0.99862953f}, {0.039259816f, -0.99922904f},
{0.026176948f, -0.99965732f}, {0.013089596f, -0.99991433f},
{6.1230318e-17f, -1.0000000f}, {-0.013089596f, -0.99991433f},
{-0.026176948f, -0.99965732f}, {-0.039259816f, -0.99922904f},
{-0.052335956f, -0.99862953f}, {-0.065403129f, -0.99785892f},
{-0.078459096f, -0.99691733f}, {-0.091501619f, -0.99580493f},
{-0.10452846f, -0.99452190f}, {-0.11753740f, -0.99306846f},
{-0.13052619f, -0.99144486f}, {-0.14349262f, -0.98965139f},
{-0.15643447f, -0.98768834f}, {-0.16934950f, -0.98555606f},
{-0.18223553f, -0.98325491f}, {-0.19509032f, -0.98078528f},
{-0.20791169f, -0.97814760f}, {-0.22069744f, -0.97534232f},
{-0.23344536f, -0.97236992f}, {-0.24615329f, -0.96923091f},
{-0.25881905f, -0.96592583f}, {-0.27144045f, -0.96245524f},
{-0.28401534f, -0.95881973f}, {-0.29654157f, -0.95501994f},
{-0.30901699f, -0.95105652f}, {-0.32143947f, -0.94693013f},
{-0.33380686f, -0.94264149f}, {-0.34611706f, -0.93819134f},
{-0.35836795f, -0.93358043f}, {-0.37055744f, -0.92880955f},
{-0.38268343f, -0.92387953f}, {-0.39474386f, -0.91879121f},
{-0.40673664f, -0.91354546f}, {-0.41865974f, -0.90814317f},
{-0.43051110f, -0.90258528f}, {-0.44228869f, -0.89687274f},
{-0.45399050f, -0.89100652f}, {-0.46561452f, -0.88498764f},
{-0.47715876f, -0.87881711f}, {-0.48862124f, -0.87249601f},
{-0.50000000f, -0.86602540f}, {-0.51129309f, -0.85940641f},
{-0.52249856f, -0.85264016f}, {-0.53361452f, -0.84572782f},
{-0.54463904f, -0.83867057f}, {-0.55557023f, -0.83146961f},
{-0.56640624f, -0.82412619f}, {-0.57714519f, -0.81664156f},
{-0.58778525f, -0.80901699f}, {-0.59832460f, -0.80125381f},
{-0.60876143f, -0.79335334f}, {-0.61909395f, -0.78531693f},
{-0.62932039f, -0.77714596f}, {-0.63943900f, -0.76884183f},
{-0.64944805f, -0.76040597f}, {-0.65934582f, -0.75183981f},
{-0.66913061f, -0.74314483f}, {-0.67880075f, -0.73432251f},
{-0.68835458f, -0.72537437f}, {-0.69779046f, -0.71630194f},
{-0.70710678f, -0.70710678f}, {-0.71630194f, -0.69779046f},
{-0.72537437f, -0.68835458f}, {-0.73432251f, -0.67880075f},
{-0.74314483f, -0.66913061f}, {-0.75183981f, -0.65934582f},
{-0.76040597f, -0.64944805f}, {-0.76884183f, -0.63943900f},
{-0.77714596f, -0.62932039f}, {-0.78531693f, -0.61909395f},
{-0.79335334f, -0.60876143f}, {-0.80125381f, -0.59832460f},
{-0.80901699f, -0.58778525f}, {-0.81664156f, -0.57714519f},
{-0.82412619f, -0.56640624f}, {-0.83146961f, -0.55557023f},
{-0.83867057f, -0.54463904f}, {-0.84572782f, -0.53361452f},
{-0.85264016f, -0.52249856f}, {-0.85940641f, -0.51129309f},
{-0.86602540f, -0.50000000f}, {-0.87249601f, -0.48862124f},
{-0.87881711f, -0.47715876f}, {-0.88498764f, -0.46561452f},
{-0.89100652f, -0.45399050f}, {-0.89687274f, -0.44228869f},
{-0.90258528f, -0.43051110f}, {-0.90814317f, -0.41865974f},
{-0.91354546f, -0.40673664f}, {-0.91879121f, -0.39474386f},
{-0.92387953f, -0.38268343f}, {-0.92880955f, -0.37055744f},
{-0.93358043f, -0.35836795f}, {-0.93819134f, -0.34611706f},
{-0.94264149f, -0.33380686f}, {-0.94693013f, -0.32143947f},
{-0.95105652f, -0.30901699f}, {-0.95501994f, -0.29654157f},
{-0.95881973f, -0.28401534f}, {-0.96245524f, -0.27144045f},
{-0.96592583f, -0.25881905f}, {-0.96923091f, -0.24615329f},
{-0.97236992f, -0.23344536f}, {-0.97534232f, -0.22069744f},
{-0.97814760f, -0.20791169f}, {-0.98078528f, -0.19509032f},
{-0.98325491f, -0.18223553f}, {-0.98555606f, -0.16934950f},
{-0.98768834f, -0.15643447f}, {-0.98965139f, -0.14349262f},
{-0.99144486f, -0.13052619f}, {-0.99306846f, -0.11753740f},
{-0.99452190f, -0.10452846f}, {-0.99580493f, -0.091501619f},
{-0.99691733f, -0.078459096f}, {-0.99785892f, -0.065403129f},
{-0.99862953f, -0.052335956f}, {-0.99922904f, -0.039259816f},
{-0.99965732f, -0.026176948f}, {-0.99991433f, -0.013089596f},
{-1.0000000f, -1.2246064e-16f}, {-0.99991433f, 0.013089596f},
{-0.99965732f, 0.026176948f}, {-0.99922904f, 0.039259816f},
{-0.99862953f, 0.052335956f}, {-0.99785892f, 0.065403129f},
{-0.99691733f, 0.078459096f}, {-0.99580493f, 0.091501619f},
{-0.99452190f, 0.10452846f}, {-0.99306846f, 0.11753740f},
{-0.99144486f, 0.13052619f}, {-0.98965139f, 0.14349262f},
{-0.98768834f, 0.15643447f}, {-0.98555606f, 0.16934950f},
{-0.98325491f, 0.18223553f}, {-0.98078528f, 0.19509032f},
{-0.97814760f, 0.20791169f}, {-0.97534232f, 0.22069744f},
{-0.97236992f, 0.23344536f}, {-0.96923091f, 0.24615329f},
{-0.96592583f, 0.25881905f}, {-0.96245524f, 0.27144045f},
{-0.95881973f, 0.28401534f}, {-0.95501994f, 0.29654157f},
{-0.95105652f, 0.30901699f}, {-0.94693013f, 0.32143947f},
{-0.94264149f, 0.33380686f}, {-0.93819134f, 0.34611706f},
{-0.93358043f, 0.35836795f}, {-0.92880955f, 0.37055744f},
{-0.92387953f, 0.38268343f}, {-0.91879121f, 0.39474386f},
{-0.91354546f, 0.40673664f}, {-0.90814317f, 0.41865974f},
{-0.90258528f, 0.43051110f}, {-0.89687274f, 0.44228869f},
{-0.89100652f, 0.45399050f}, {-0.88498764f, 0.46561452f},
{-0.87881711f, 0.47715876f}, {-0.87249601f, 0.48862124f},
{-0.86602540f, 0.50000000f}, {-0.85940641f, 0.51129309f},
{-0.85264016f, 0.52249856f}, {-0.84572782f, 0.53361452f},
{-0.83867057f, 0.54463904f}, {-0.83146961f, 0.55557023f},
{-0.82412619f, 0.56640624f}, {-0.81664156f, 0.57714519f},
{-0.80901699f, 0.58778525f}, {-0.80125381f, 0.59832460f},
{-0.79335334f, 0.60876143f}, {-0.78531693f, 0.61909395f},
{-0.77714596f, 0.62932039f}, {-0.76884183f, 0.63943900f},
{-0.76040597f, 0.64944805f}, {-0.75183981f, 0.65934582f},
{-0.74314483f, 0.66913061f}, {-0.73432251f, 0.67880075f},
{-0.72537437f, 0.68835458f}, {-0.71630194f, 0.69779046f},
{-0.70710678f, 0.70710678f}, {-0.69779046f, 0.71630194f},
{-0.68835458f, 0.72537437f}, {-0.67880075f, 0.73432251f},
{-0.66913061f, 0.74314483f}, {-0.65934582f, 0.75183981f},
{-0.64944805f, 0.76040597f}, {-0.63943900f, 0.76884183f},
{-0.62932039f, 0.77714596f}, {-0.61909395f, 0.78531693f},
{-0.60876143f, 0.79335334f}, {-0.59832460f, 0.80125381f},
{-0.58778525f, 0.80901699f}, {-0.57714519f, 0.81664156f},
{-0.56640624f, 0.82412619f}, {-0.55557023f, 0.83146961f},
{-0.54463904f, 0.83867057f}, {-0.53361452f, 0.84572782f},
{-0.52249856f, 0.85264016f}, {-0.51129309f, 0.85940641f},
{-0.50000000f, 0.86602540f}, {-0.48862124f, 0.87249601f},
{-0.47715876f, 0.87881711f}, {-0.46561452f, 0.88498764f},
{-0.45399050f, 0.89100652f}, {-0.44228869f, 0.89687274f},
{-0.43051110f, 0.90258528f}, {-0.41865974f, 0.90814317f},
{-0.40673664f, 0.91354546f}, {-0.39474386f, 0.91879121f},
{-0.38268343f, 0.92387953f}, {-0.37055744f, 0.92880955f},
{-0.35836795f, 0.93358043f}, {-0.34611706f, 0.93819134f},
{-0.33380686f, 0.94264149f}, {-0.32143947f, 0.94693013f},
{-0.30901699f, 0.95105652f}, {-0.29654157f, 0.95501994f},
{-0.28401534f, 0.95881973f}, {-0.27144045f, 0.96245524f},
{-0.25881905f, 0.96592583f}, {-0.24615329f, 0.96923091f},
{-0.23344536f, 0.97236992f}, {-0.22069744f, 0.97534232f},
{-0.20791169f, 0.97814760f}, {-0.19509032f, 0.98078528f},
{-0.18223553f, 0.98325491f}, {-0.16934950f, 0.98555606f},
{-0.15643447f, 0.98768834f}, {-0.14349262f, 0.98965139f},
{-0.13052619f, 0.99144486f}, {-0.11753740f, 0.99306846f},
{-0.10452846f, 0.99452190f}, {-0.091501619f, 0.99580493f},
{-0.078459096f, 0.99691733f}, {-0.065403129f, 0.99785892f},
{-0.052335956f, 0.99862953f}, {-0.039259816f, 0.99922904f},
{-0.026176948f, 0.99965732f}, {-0.013089596f, 0.99991433f},
{-1.8369095e-16f, 1.0000000f}, {0.013089596f, 0.99991433f},
{0.026176948f, 0.99965732f}, {0.039259816f, 0.99922904f},
{0.052335956f, 0.99862953f}, {0.065403129f, 0.99785892f},
{0.078459096f, 0.99691733f}, {0.091501619f, 0.99580493f},
{0.10452846f, 0.99452190f}, {0.11753740f, 0.99306846f},
{0.13052619f, 0.99144486f}, {0.14349262f, 0.98965139f},
{0.15643447f, 0.98768834f}, {0.16934950f, 0.98555606f},
{0.18223553f, 0.98325491f}, {0.19509032f, 0.98078528f},
{0.20791169f, 0.97814760f}, {0.22069744f, 0.97534232f},
{0.23344536f, 0.97236992f}, {0.24615329f, 0.96923091f},
{0.25881905f, 0.96592583f}, {0.27144045f, 0.96245524f},
{0.28401534f, 0.95881973f}, {0.29654157f, 0.95501994f},
{0.30901699f, 0.95105652f}, {0.32143947f, 0.94693013f},
{0.33380686f, 0.94264149f}, {0.34611706f, 0.93819134f},
{0.35836795f, 0.93358043f}, {0.37055744f, 0.92880955f},
{0.38268343f, 0.92387953f}, {0.39474386f, 0.91879121f},
{0.40673664f, 0.91354546f}, {0.41865974f, 0.90814317f},
{0.43051110f, 0.90258528f}, {0.44228869f, 0.89687274f},
{0.45399050f, 0.89100652f}, {0.46561452f, 0.88498764f},
{0.47715876f, 0.87881711f}, {0.48862124f, 0.87249601f},
{0.50000000f, 0.86602540f}, {0.51129309f, 0.85940641f},
{0.52249856f, 0.85264016f}, {0.53361452f, 0.84572782f},
{0.54463904f, 0.83867057f}, {0.55557023f, 0.83146961f},
{0.56640624f, 0.82412619f}, {0.57714519f, 0.81664156f},
{0.58778525f, 0.80901699f}, {0.59832460f, 0.80125381f},
{0.60876143f, 0.79335334f}, {0.61909395f, 0.78531693f},
{0.62932039f, 0.77714596f}, {0.63943900f, 0.76884183f},
{0.64944805f, 0.76040597f}, {0.65934582f, 0.75183981f},
{0.66913061f, 0.74314483f}, {0.67880075f, 0.73432251f},
{0.68835458f, 0.72537437f}, {0.69779046f, 0.71630194f},
{0.70710678f, 0.70710678f}, {0.71630194f, 0.69779046f},
{0.72537437f, 0.68835458f}, {0.73432251f, 0.67880075f},
{0.74314483f, 0.66913061f}, {0.75183981f, 0.65934582f},
{0.76040597f, 0.64944805f}, {0.76884183f, 0.63943900f},
{0.77714596f, 0.62932039f}, {0.78531693f, 0.61909395f},
{0.79335334f, 0.60876143f}, {0.80125381f, 0.59832460f},
{0.80901699f, 0.58778525f}, {0.81664156f, 0.57714519f},
{0.82412619f, 0.56640624f}, {0.83146961f, 0.55557023f},
{0.83867057f, 0.54463904f}, {0.84572782f, 0.53361452f},
{0.85264016f, 0.52249856f}, {0.85940641f, 0.51129309f},
{0.86602540f, 0.50000000f}, {0.87249601f, 0.48862124f},
{0.87881711f, 0.47715876f}, {0.88498764f, 0.46561452f},
{0.89100652f, 0.45399050f}, {0.89687274f, 0.44228869f},
{0.90258528f, 0.43051110f}, {0.90814317f, 0.41865974f},
{0.91354546f, 0.40673664f}, {0.91879121f, 0.39474386f},
{0.92387953f, 0.38268343f}, {0.92880955f, 0.37055744f},
{0.93358043f, 0.35836795f}, {0.93819134f, 0.34611706f},
{0.94264149f, 0.33380686f}, {0.94693013f, 0.32143947f},
{0.95105652f, 0.30901699f}, {0.95501994f, 0.29654157f},
{0.95881973f, 0.28401534f}, {0.96245524f, 0.27144045f},
{0.96592583f, 0.25881905f}, {0.96923091f, 0.24615329f},
{0.97236992f, 0.23344536f}, {0.97534232f, 0.22069744f},
{0.97814760f, 0.20791169f}, {0.98078528f, 0.19509032f},
{0.98325491f, 0.18223553f}, {0.98555606f, 0.16934950f},
{0.98768834f, 0.15643447f}, {0.98965139f, 0.14349262f},
{0.99144486f, 0.13052619f}, {0.99306846f, 0.11753740f},
{0.99452190f, 0.10452846f}, {0.99580493f, 0.091501619f},
{0.99691733f, 0.078459096f}, {0.99785892f, 0.065403129f},
{0.99862953f, 0.052335956f}, {0.99922904f, 0.039259816f},
{0.99965732f, 0.026176948f}, {0.99991433f, 0.013089596f},
};
#ifndef FFT_BITREV480
#define FFT_BITREV480
static const opus_int16 fft_bitrev480[480] = {
0, 120, 240, 360, 30, 150, 270, 390, 60, 180, 300, 420, 90, 210, 330,
450, 15, 135, 255, 375, 45, 165, 285, 405, 75, 195, 315, 435, 105, 225,
345, 465, 5, 125, 245, 365, 35, 155, 275, 395, 65, 185, 305, 425, 95,
215, 335, 455, 20, 140, 260, 380, 50, 170, 290, 410, 80, 200, 320, 440,
110, 230, 350, 470, 10, 130, 250, 370, 40, 160, 280, 400, 70, 190, 310,
430, 100, 220, 340, 460, 25, 145, 265, 385, 55, 175, 295, 415, 85, 205,
325, 445, 115, 235, 355, 475, 1, 121, 241, 361, 31, 151, 271, 391, 61,
181, 301, 421, 91, 211, 331, 451, 16, 136, 256, 376, 46, 166, 286, 406,
76, 196, 316, 436, 106, 226, 346, 466, 6, 126, 246, 366, 36, 156, 276,
396, 66, 186, 306, 426, 96, 216, 336, 456, 21, 141, 261, 381, 51, 171,
291, 411, 81, 201, 321, 441, 111, 231, 351, 471, 11, 131, 251, 371, 41,
161, 281, 401, 71, 191, 311, 431, 101, 221, 341, 461, 26, 146, 266, 386,
56, 176, 296, 416, 86, 206, 326, 446, 116, 236, 356, 476, 2, 122, 242,
362, 32, 152, 272, 392, 62, 182, 302, 422, 92, 212, 332, 452, 17, 137,
257, 377, 47, 167, 287, 407, 77, 197, 317, 437, 107, 227, 347, 467, 7,
127, 247, 367, 37, 157, 277, 397, 67, 187, 307, 427, 97, 217, 337, 457,
22, 142, 262, 382, 52, 172, 292, 412, 82, 202, 322, 442, 112, 232, 352,
472, 12, 132, 252, 372, 42, 162, 282, 402, 72, 192, 312, 432, 102, 222,
342, 462, 27, 147, 267, 387, 57, 177, 297, 417, 87, 207, 327, 447, 117,
237, 357, 477, 3, 123, 243, 363, 33, 153, 273, 393, 63, 183, 303, 423,
93, 213, 333, 453, 18, 138, 258, 378, 48, 168, 288, 408, 78, 198, 318,
438, 108, 228, 348, 468, 8, 128, 248, 368, 38, 158, 278, 398, 68, 188,
308, 428, 98, 218, 338, 458, 23, 143, 263, 383, 53, 173, 293, 413, 83,
203, 323, 443, 113, 233, 353, 473, 13, 133, 253, 373, 43, 163, 283, 403,
73, 193, 313, 433, 103, 223, 343, 463, 28, 148, 268, 388, 58, 178, 298,
418, 88, 208, 328, 448, 118, 238, 358, 478, 4, 124, 244, 364, 34, 154,
274, 394, 64, 184, 304, 424, 94, 214, 334, 454, 19, 139, 259, 379, 49,
169, 289, 409, 79, 199, 319, 439, 109, 229, 349, 469, 9, 129, 249, 369,
39, 159, 279, 399, 69, 189, 309, 429, 99, 219, 339, 459, 24, 144, 264,
384, 54, 174, 294, 414, 84, 204, 324, 444, 114, 234, 354, 474, 14, 134,
254, 374, 44, 164, 284, 404, 74, 194, 314, 434, 104, 224, 344, 464, 29,
149, 269, 389, 59, 179, 299, 419, 89, 209, 329, 449, 119, 239, 359, 479,
};
#endif
#ifndef FFT_BITREV240
#define FFT_BITREV240
static const opus_int16 fft_bitrev240[240] = {
0, 60, 120, 180, 15, 75, 135, 195, 30, 90, 150, 210, 45, 105, 165,
225, 5, 65, 125, 185, 20, 80, 140, 200, 35, 95, 155, 215, 50, 110,
170, 230, 10, 70, 130, 190, 25, 85, 145, 205, 40, 100, 160, 220, 55,
115, 175, 235, 1, 61, 121, 181, 16, 76, 136, 196, 31, 91, 151, 211,
46, 106, 166, 226, 6, 66, 126, 186, 21, 81, 141, 201, 36, 96, 156,
216, 51, 111, 171, 231, 11, 71, 131, 191, 26, 86, 146, 206, 41, 101,
161, 221, 56, 116, 176, 236, 2, 62, 122, 182, 17, 77, 137, 197, 32,
92, 152, 212, 47, 107, 167, 227, 7, 67, 127, 187, 22, 82, 142, 202,
37, 97, 157, 217, 52, 112, 172, 232, 12, 72, 132, 192, 27, 87, 147,
207, 42, 102, 162, 222, 57, 117, 177, 237, 3, 63, 123, 183, 18, 78,
138, 198, 33, 93, 153, 213, 48, 108, 168, 228, 8, 68, 128, 188, 23,
83, 143, 203, 38, 98, 158, 218, 53, 113, 173, 233, 13, 73, 133, 193,
28, 88, 148, 208, 43, 103, 163, 223, 58, 118, 178, 238, 4, 64, 124,
184, 19, 79, 139, 199, 34, 94, 154, 214, 49, 109, 169, 229, 9, 69,
129, 189, 24, 84, 144, 204, 39, 99, 159, 219, 54, 114, 174, 234, 14,
74, 134, 194, 29, 89, 149, 209, 44, 104, 164, 224, 59, 119, 179, 239,
};
#endif
#ifndef FFT_BITREV120
#define FFT_BITREV120
static const opus_int16 fft_bitrev120[120] = {
0, 30, 60, 90, 15, 45, 75, 105, 5, 35, 65, 95, 20, 50, 80,
110, 10, 40, 70, 100, 25, 55, 85, 115, 1, 31, 61, 91, 16, 46,
76, 106, 6, 36, 66, 96, 21, 51, 81, 111, 11, 41, 71, 101, 26,
56, 86, 116, 2, 32, 62, 92, 17, 47, 77, 107, 7, 37, 67, 97,
22, 52, 82, 112, 12, 42, 72, 102, 27, 57, 87, 117, 3, 33, 63,
93, 18, 48, 78, 108, 8, 38, 68, 98, 23, 53, 83, 113, 13, 43,
73, 103, 28, 58, 88, 118, 4, 34, 64, 94, 19, 49, 79, 109, 9,
39, 69, 99, 24, 54, 84, 114, 14, 44, 74, 104, 29, 59, 89, 119,
};
#endif
#ifndef FFT_BITREV60
#define FFT_BITREV60
static const opus_int16 fft_bitrev60[60] = {
0, 15, 30, 45, 5, 20, 35, 50, 10, 25, 40, 55, 1, 16, 31,
46, 6, 21, 36, 51, 11, 26, 41, 56, 2, 17, 32, 47, 7, 22,
37, 52, 12, 27, 42, 57, 3, 18, 33, 48, 8, 23, 38, 53, 13,
28, 43, 58, 4, 19, 34, 49, 9, 24, 39, 54, 14, 29, 44, 59,
};
#endif
#ifndef FFT_STATE48000_960_0
#define FFT_STATE48000_960_0
static const kiss_fft_state fft_state48000_960_0 = {
480, /* nfft */
0.002083333f, /* scale */
-1, /* shift */
{4, 120, 4, 30, 2, 15, 3, 5, 5, 1, 0, 0, 0, 0, 0, 0, }, /* factors */
fft_bitrev480, /* bitrev */
fft_twiddles48000_960, /* bitrev */
};
#endif
#ifndef FFT_STATE48000_960_1
#define FFT_STATE48000_960_1
static const kiss_fft_state fft_state48000_960_1 = {
240, /* nfft */
0.004166667f, /* scale */
1, /* shift */
{4, 60, 4, 15, 3, 5, 5, 1, 0, 0, 0, 0, 0, 0, 0, 0, }, /* factors */
fft_bitrev240, /* bitrev */
fft_twiddles48000_960, /* bitrev */
};
#endif
#ifndef FFT_STATE48000_960_2
#define FFT_STATE48000_960_2
static const kiss_fft_state fft_state48000_960_2 = {
120, /* nfft */
0.008333333f, /* scale */
2, /* shift */
{4, 30, 2, 15, 3, 5, 5, 1, 0, 0, 0, 0, 0, 0, 0, 0, }, /* factors */
fft_bitrev120, /* bitrev */
fft_twiddles48000_960, /* bitrev */
};
#endif
#ifndef FFT_STATE48000_960_3
#define FFT_STATE48000_960_3
static const kiss_fft_state fft_state48000_960_3 = {
60, /* nfft */
0.016666667f, /* scale */
3, /* shift */
{4, 15, 3, 5, 5, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, }, /* factors */
fft_bitrev60, /* bitrev */
fft_twiddles48000_960, /* bitrev */
};
#endif
#endif
#ifndef MDCT_TWIDDLES960
#define MDCT_TWIDDLES960
static const opus_val16 mdct_twiddles960[481] = {
1.0000000f, 0.99999465f, 0.99997858f, 0.99995181f, 0.99991433f,
0.99986614f, 0.99980724f, 0.99973764f, 0.99965732f, 0.99956631f,
0.99946459f, 0.99935216f, 0.99922904f, 0.99909521f, 0.99895068f,
0.99879546f, 0.99862953f, 0.99845292f, 0.99826561f, 0.99806761f,
0.99785892f, 0.99763955f, 0.99740949f, 0.99716875f, 0.99691733f,
0.99665524f, 0.99638247f, 0.99609903f, 0.99580493f, 0.99550016f,
0.99518473f, 0.99485864f, 0.99452190f, 0.99417450f, 0.99381646f,
0.99344778f, 0.99306846f, 0.99267850f, 0.99227791f, 0.99186670f,
0.99144486f, 0.99101241f, 0.99056934f, 0.99011566f, 0.98965139f,
0.98917651f, 0.98869104f, 0.98819498f, 0.98768834f, 0.98717112f,
0.98664333f, 0.98610497f, 0.98555606f, 0.98499659f, 0.98442657f,
0.98384600f, 0.98325491f, 0.98265328f, 0.98204113f, 0.98141846f,
0.98078528f, 0.98014159f, 0.97948742f, 0.97882275f, 0.97814760f,
0.97746197f, 0.97676588f, 0.97605933f, 0.97534232f, 0.97461487f,
0.97387698f, 0.97312866f, 0.97236992f, 0.97160077f, 0.97082121f,
0.97003125f, 0.96923091f, 0.96842019f, 0.96759909f, 0.96676764f,
0.96592582f, 0.96507367f, 0.96421118f, 0.96333837f, 0.96245523f,
0.96156180f, 0.96065806f, 0.95974403f, 0.95881973f, 0.95788517f,
0.95694034f, 0.95598526f, 0.95501995f, 0.95404440f, 0.95305864f,
0.95206267f, 0.95105651f, 0.95004016f, 0.94901364f, 0.94797697f,
0.94693013f, 0.94587315f, 0.94480604f, 0.94372882f, 0.94264149f,
0.94154406f, 0.94043656f, 0.93931897f, 0.93819133f, 0.93705365f,
0.93590592f, 0.93474818f, 0.93358042f, 0.93240268f, 0.93121493f,
0.93001722f, 0.92880955f, 0.92759193f, 0.92636438f, 0.92512690f,
0.92387953f, 0.92262225f, 0.92135509f, 0.92007809f, 0.91879121f,
0.91749449f, 0.91618795f, 0.91487161f, 0.91354545f, 0.91220952f,
0.91086382f, 0.90950836f, 0.90814316f, 0.90676824f, 0.90538363f,
0.90398929f, 0.90258528f, 0.90117161f, 0.89974828f, 0.89831532f,
0.89687273f, 0.89542055f, 0.89395877f, 0.89248742f, 0.89100652f,
0.88951606f, 0.88801610f, 0.88650661f, 0.88498764f, 0.88345918f,
0.88192125f, 0.88037390f, 0.87881711f, 0.87725090f, 0.87567531f,
0.87409035f, 0.87249599f, 0.87089232f, 0.86927933f, 0.86765699f,
0.86602540f, 0.86438453f, 0.86273437f, 0.86107503f, 0.85940641f,
0.85772862f, 0.85604161f, 0.85434547f, 0.85264014f, 0.85092572f,
0.84920218f, 0.84746955f, 0.84572781f, 0.84397704f, 0.84221721f,
0.84044838f, 0.83867056f, 0.83688375f, 0.83508799f, 0.83328325f,
0.83146961f, 0.82964704f, 0.82781562f, 0.82597530f, 0.82412620f,
0.82226820f, 0.82040144f, 0.81852589f, 0.81664154f, 0.81474847f,
0.81284665f, 0.81093620f, 0.80901698f, 0.80708914f, 0.80515262f,
0.80320752f, 0.80125378f, 0.79929149f, 0.79732067f, 0.79534125f,
0.79335335f, 0.79135691f, 0.78935204f, 0.78733867f, 0.78531691f,
0.78328674f, 0.78124818f, 0.77920122f, 0.77714595f, 0.77508232f,
0.77301043f, 0.77093026f, 0.76884183f, 0.76674517f, 0.76464026f,
0.76252720f, 0.76040593f, 0.75827656f, 0.75613907f, 0.75399349f,
0.75183978f, 0.74967807f, 0.74750833f, 0.74533054f, 0.74314481f,
0.74095112f, 0.73874950f, 0.73653993f, 0.73432251f, 0.73209718f,
0.72986405f, 0.72762307f, 0.72537438f, 0.72311787f, 0.72085359f,
0.71858162f, 0.71630192f, 0.71401459f, 0.71171956f, 0.70941701f,
0.70710677f, 0.70478900f, 0.70246363f, 0.70013079f, 0.69779041f,
0.69544260f, 0.69308738f, 0.69072466f, 0.68835458f, 0.68597709f,
0.68359229f, 0.68120013f, 0.67880072f, 0.67639404f, 0.67398011f,
0.67155892f, 0.66913059f, 0.66669509f, 0.66425240f, 0.66180265f,
0.65934581f, 0.65688191f, 0.65441092f, 0.65193298f, 0.64944801f,
0.64695613f, 0.64445727f, 0.64195160f, 0.63943902f, 0.63691954f,
0.63439328f, 0.63186019f, 0.62932037f, 0.62677377f, 0.62422055f,
0.62166055f, 0.61909394f, 0.61652065f, 0.61394081f, 0.61135435f,
0.60876139f, 0.60616195f, 0.60355593f, 0.60094349f, 0.59832457f,
0.59569929f, 0.59306758f, 0.59042957f, 0.58778523f, 0.58513460f,
0.58247766f, 0.57981452f, 0.57714518f, 0.57446961f, 0.57178793f,
0.56910013f, 0.56640624f, 0.56370623f, 0.56100023f, 0.55828818f,
0.55557020f, 0.55284627f, 0.55011641f, 0.54738067f, 0.54463901f,
0.54189157f, 0.53913828f, 0.53637921f, 0.53361450f, 0.53084398f,
0.52806787f, 0.52528601f, 0.52249852f, 0.51970543f, 0.51690688f,
0.51410279f, 0.51129310f, 0.50847793f, 0.50565732f, 0.50283139f,
0.49999997f, 0.49716321f, 0.49432122f, 0.49147383f, 0.48862118f,
0.48576340f, 0.48290042f, 0.48003216f, 0.47715876f, 0.47428025f,
0.47139677f, 0.46850813f, 0.46561448f, 0.46271584f, 0.45981235f,
0.45690383f, 0.45399042f, 0.45107214f, 0.44814915f, 0.44522124f,
0.44228868f, 0.43935137f, 0.43640926f, 0.43346247f, 0.43051104f,
0.42755511f, 0.42459449f, 0.42162932f, 0.41865964f, 0.41568558f,
0.41270697f, 0.40972393f, 0.40673661f, 0.40374494f, 0.40074884f,
0.39774844f, 0.39474390f, 0.39173501f, 0.38872193f, 0.38570469f,
0.38268343f, 0.37965796f, 0.37662842f, 0.37359496f, 0.37055739f,
0.36751585f, 0.36447038f, 0.36142122f, 0.35836797f, 0.35531089f,
0.35225000f, 0.34918544f, 0.34611704f, 0.34304493f, 0.33996926f,
0.33688983f, 0.33380680f, 0.33072019f, 0.32763015f, 0.32453650f,
0.32143936f, 0.31833890f, 0.31523503f, 0.31212767f, 0.30901696f,
0.30590306f, 0.30278577f, 0.29966524f, 0.29654150f, 0.29341470f,
0.29028464f, 0.28715147f, 0.28401522f, 0.28087605f, 0.27773376f,
0.27458861f, 0.27144052f, 0.26828940f, 0.26513541f, 0.26197859f,
0.25881907f, 0.25565666f, 0.25249152f, 0.24932367f, 0.24615327f,
0.24298012f, 0.23980436f, 0.23662604f, 0.23344530f, 0.23026206f,
0.22707623f, 0.22388809f, 0.22069744f, 0.21750443f, 0.21430908f,
0.21111156f, 0.20791165f, 0.20470953f, 0.20150520f, 0.19829884f,
0.19509024f, 0.19187955f, 0.18866692f, 0.18545227f, 0.18223552f,
0.17901681f, 0.17579631f, 0.17257380f, 0.16934945f, 0.16612328f,
0.16289546f, 0.15966577f, 0.15643437f, 0.15320141f, 0.14996669f,
0.14673037f, 0.14349260f, 0.14025329f, 0.13701235f, 0.13376995f,
0.13052612f, 0.12728101f, 0.12403442f, 0.12078650f, 0.11753740f,
0.11428693f, 0.11103523f, 0.10778234f, 0.10452842f, 0.10127326f,
0.098017137f, 0.094759842f, 0.091501652f, 0.088242363f, 0.084982129f,
0.081721103f, 0.078459084f, 0.075196224f, 0.071932560f, 0.068668243f,
0.065403073f, 0.062137201f, 0.058870665f, 0.055603617f, 0.052335974f,
0.049067651f, 0.045798921f, 0.042529582f, 0.039259788f, 0.035989573f,
0.032719092f, 0.029448142f, 0.026176876f, 0.022905329f, 0.019633657f,
0.016361655f, 0.013089478f, 0.0098171604f, 0.0065449764f, 0.0032724839f,
-4.3711390e-08f, };
#endif
static const CELTMode mode48000_960_120 = {
48000, /* Fs */
120, /* overlap */
21, /* nbEBands */
21, /* effEBands */
{0.85000610f, 0.0000000f, 1.0000000f, 1.0000000f, }, /* preemph */
eband5ms, /* eBands */
3, /* maxLM */
8, /* nbShortMdcts */
120, /* shortMdctSize */
11, /* nbAllocVectors */
band_allocation, /* allocVectors */
logN400, /* logN */
window120, /* window */
{1920, 3, {&fft_state48000_960_0, &fft_state48000_960_1, &fft_state48000_960_2, &fft_state48000_960_3, }, mdct_twiddles960}, /* mdct */
{392, cache_index50, cache_bits50, cache_caps50}, /* cache */
};
/* List of all the available modes */
#define TOTAL_MODES 1
static const CELTMode * const static_mode_list[TOTAL_MODES] = {
&mode48000_960_120,
};

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src/engine/external/opus/celt/vq.c vendored Normal file
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/* Copyright (c) 2007-2008 CSIRO
Copyright (c) 2007-2009 Xiph.Org Foundation
Written by Jean-Marc Valin */
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "mathops.h"
#include "cwrs.h"
#include "vq.h"
#include "arch.h"
#include "os_support.h"
#include "bands.h"
#include "rate.h"
static void exp_rotation1(celt_norm *X, int len, int stride, opus_val16 c, opus_val16 s)
{
int i;
celt_norm *Xptr;
Xptr = X;
for (i=0;i<len-stride;i++)
{
celt_norm x1, x2;
x1 = Xptr[0];
x2 = Xptr[stride];
Xptr[stride] = EXTRACT16(SHR32(MULT16_16(c,x2) + MULT16_16(s,x1), 15));
*Xptr++ = EXTRACT16(SHR32(MULT16_16(c,x1) - MULT16_16(s,x2), 15));
}
Xptr = &X[len-2*stride-1];
for (i=len-2*stride-1;i>=0;i--)
{
celt_norm x1, x2;
x1 = Xptr[0];
x2 = Xptr[stride];
Xptr[stride] = EXTRACT16(SHR32(MULT16_16(c,x2) + MULT16_16(s,x1), 15));
*Xptr-- = EXTRACT16(SHR32(MULT16_16(c,x1) - MULT16_16(s,x2), 15));
}
}
static void exp_rotation(celt_norm *X, int len, int dir, int stride, int K, int spread)
{
static const int SPREAD_FACTOR[3]={15,10,5};
int i;
opus_val16 c, s;
opus_val16 gain, theta;
int stride2=0;
int factor;
if (2*K>=len || spread==SPREAD_NONE)
return;
factor = SPREAD_FACTOR[spread-1];
gain = celt_div((opus_val32)MULT16_16(Q15_ONE,len),(opus_val32)(len+factor*K));
theta = HALF16(MULT16_16_Q15(gain,gain));
c = celt_cos_norm(EXTEND32(theta));
s = celt_cos_norm(EXTEND32(SUB16(Q15ONE,theta))); /* sin(theta) */
if (len>=8*stride)
{
stride2 = 1;
/* This is just a simple (equivalent) way of computing sqrt(len/stride) with rounding.
It's basically incrementing long as (stride2+0.5)^2 < len/stride. */
while ((stride2*stride2+stride2)*stride + (stride>>2) < len)
stride2++;
}
/*NOTE: As a minor optimization, we could be passing around log2(B), not B, for both this and for
extract_collapse_mask().*/
len /= stride;
for (i=0;i<stride;i++)
{
if (dir < 0)
{
if (stride2)
exp_rotation1(X+i*len, len, stride2, s, c);
exp_rotation1(X+i*len, len, 1, c, s);
} else {
exp_rotation1(X+i*len, len, 1, c, -s);
if (stride2)
exp_rotation1(X+i*len, len, stride2, s, -c);
}
}
}
/** Takes the pitch vector and the decoded residual vector, computes the gain
that will give ||p+g*y||=1 and mixes the residual with the pitch. */
static void normalise_residual(int * OPUS_RESTRICT iy, celt_norm * OPUS_RESTRICT X,
int N, opus_val32 Ryy, opus_val16 gain)
{
int i;
#ifdef FIXED_POINT
int k;
#endif
opus_val32 t;
opus_val16 g;
#ifdef FIXED_POINT
k = celt_ilog2(Ryy)>>1;
#endif
t = VSHR32(Ryy, 2*(k-7));
g = MULT16_16_P15(celt_rsqrt_norm(t),gain);
i=0;
do
X[i] = EXTRACT16(PSHR32(MULT16_16(g, iy[i]), k+1));
while (++i < N);
}
static unsigned extract_collapse_mask(int *iy, int N, int B)
{
unsigned collapse_mask;
int N0;
int i;
if (B<=1)
return 1;
/*NOTE: As a minor optimization, we could be passing around log2(B), not B, for both this and for
exp_rotation().*/
N0 = N/B;
collapse_mask = 0;
i=0; do {
int j;
j=0; do {
collapse_mask |= (iy[i*N0+j]!=0)<<i;
} while (++j<N0);
} while (++i<B);
return collapse_mask;
}
unsigned alg_quant(celt_norm *X, int N, int K, int spread, int B, ec_enc *enc
#ifdef RESYNTH
, opus_val16 gain
#endif
)
{
VARDECL(celt_norm, y);
VARDECL(int, iy);
VARDECL(opus_val16, signx);
int i, j;
opus_val16 s;
int pulsesLeft;
opus_val32 sum;
opus_val32 xy;
opus_val16 yy;
unsigned collapse_mask;
SAVE_STACK;
celt_assert2(K>0, "alg_quant() needs at least one pulse");
celt_assert2(N>1, "alg_quant() needs at least two dimensions");
ALLOC(y, N, celt_norm);
ALLOC(iy, N, int);
ALLOC(signx, N, opus_val16);
exp_rotation(X, N, 1, B, K, spread);
/* Get rid of the sign */
sum = 0;
j=0; do {
if (X[j]>0)
signx[j]=1;
else {
signx[j]=-1;
X[j]=-X[j];
}
iy[j] = 0;
y[j] = 0;
} while (++j<N);
xy = yy = 0;
pulsesLeft = K;
/* Do a pre-search by projecting on the pyramid */
if (K > (N>>1))
{
opus_val16 rcp;
j=0; do {
sum += X[j];
} while (++j<N);
/* If X is too small, just replace it with a pulse at 0 */
#ifdef FIXED_POINT
if (sum <= K)
#else
/* Prevents infinities and NaNs from causing too many pulses
to be allocated. 64 is an approximation of infinity here. */
if (!(sum > EPSILON && sum < 64))
#endif
{
X[0] = QCONST16(1.f,14);
j=1; do
X[j]=0;
while (++j<N);
sum = QCONST16(1.f,14);
}
rcp = EXTRACT16(MULT16_32_Q16(K-1, celt_rcp(sum)));
j=0; do {
#ifdef FIXED_POINT
/* It's really important to round *towards zero* here */
iy[j] = MULT16_16_Q15(X[j],rcp);
#else
iy[j] = (int)floor(rcp*X[j]);
#endif
y[j] = (celt_norm)iy[j];
yy = MAC16_16(yy, y[j],y[j]);
xy = MAC16_16(xy, X[j],y[j]);
y[j] *= 2;
pulsesLeft -= iy[j];
} while (++j<N);
}
celt_assert2(pulsesLeft>=1, "Allocated too many pulses in the quick pass");
/* This should never happen, but just in case it does (e.g. on silence)
we fill the first bin with pulses. */
#ifdef FIXED_POINT_DEBUG
celt_assert2(pulsesLeft<=N+3, "Not enough pulses in the quick pass");
#endif
if (pulsesLeft > N+3)
{
opus_val16 tmp = (opus_val16)pulsesLeft;
yy = MAC16_16(yy, tmp, tmp);
yy = MAC16_16(yy, tmp, y[0]);
iy[0] += pulsesLeft;
pulsesLeft=0;
}
s = 1;
for (i=0;i<pulsesLeft;i++)
{
int best_id;
opus_val32 best_num = -VERY_LARGE16;
opus_val16 best_den = 0;
#ifdef FIXED_POINT
int rshift;
#endif
#ifdef FIXED_POINT
rshift = 1+celt_ilog2(K-pulsesLeft+i+1);
#endif
best_id = 0;
/* The squared magnitude term gets added anyway, so we might as well
add it outside the loop */
yy = ADD32(yy, 1);
j=0;
do {
opus_val16 Rxy, Ryy;
/* Temporary sums of the new pulse(s) */
Rxy = EXTRACT16(SHR32(ADD32(xy, EXTEND32(X[j])),rshift));
/* We're multiplying y[j] by two so we don't have to do it here */
Ryy = ADD16(yy, y[j]);
/* Approximate score: we maximise Rxy/sqrt(Ryy) (we're guaranteed that
Rxy is positive because the sign is pre-computed) */
Rxy = MULT16_16_Q15(Rxy,Rxy);
/* The idea is to check for num/den >= best_num/best_den, but that way
we can do it without any division */
/* OPT: Make sure to use conditional moves here */
if (MULT16_16(best_den, Rxy) > MULT16_16(Ryy, best_num))
{
best_den = Ryy;
best_num = Rxy;
best_id = j;
}
} while (++j<N);
/* Updating the sums of the new pulse(s) */
xy = ADD32(xy, EXTEND32(X[best_id]));
/* We're multiplying y[j] by two so we don't have to do it here */
yy = ADD16(yy, y[best_id]);
/* Only now that we've made the final choice, update y/iy */
/* Multiplying y[j] by 2 so we don't have to do it everywhere else */
y[best_id] += 2*s;
iy[best_id]++;
}
/* Put the original sign back */
j=0;
do {
X[j] = MULT16_16(signx[j],X[j]);
if (signx[j] < 0)
iy[j] = -iy[j];
} while (++j<N);
encode_pulses(iy, N, K, enc);
#ifdef RESYNTH
normalise_residual(iy, X, N, yy, gain);
exp_rotation(X, N, -1, B, K, spread);
#endif
collapse_mask = extract_collapse_mask(iy, N, B);
RESTORE_STACK;
return collapse_mask;
}
/** Decode pulse vector and combine the result with the pitch vector to produce
the final normalised signal in the current band. */
unsigned alg_unquant(celt_norm *X, int N, int K, int spread, int B,
ec_dec *dec, opus_val16 gain)
{
int i;
opus_val32 Ryy;
unsigned collapse_mask;
VARDECL(int, iy);
SAVE_STACK;
celt_assert2(K>0, "alg_unquant() needs at least one pulse");
celt_assert2(N>1, "alg_unquant() needs at least two dimensions");
ALLOC(iy, N, int);
decode_pulses(iy, N, K, dec);
Ryy = 0;
i=0;
do {
Ryy = MAC16_16(Ryy, iy[i], iy[i]);
} while (++i < N);
normalise_residual(iy, X, N, Ryy, gain);
exp_rotation(X, N, -1, B, K, spread);
collapse_mask = extract_collapse_mask(iy, N, B);
RESTORE_STACK;
return collapse_mask;
}
void renormalise_vector(celt_norm *X, int N, opus_val16 gain)
{
int i;
#ifdef FIXED_POINT
int k;
#endif
opus_val32 E = EPSILON;
opus_val16 g;
opus_val32 t;
celt_norm *xptr = X;
for (i=0;i<N;i++)
{
E = MAC16_16(E, *xptr, *xptr);
xptr++;
}
#ifdef FIXED_POINT
k = celt_ilog2(E)>>1;
#endif
t = VSHR32(E, 2*(k-7));
g = MULT16_16_P15(celt_rsqrt_norm(t),gain);
xptr = X;
for (i=0;i<N;i++)
{
*xptr = EXTRACT16(PSHR32(MULT16_16(g, *xptr), k+1));
xptr++;
}
/*return celt_sqrt(E);*/
}
int stereo_itheta(celt_norm *X, celt_norm *Y, int stereo, int N)
{
int i;
int itheta;
opus_val16 mid, side;
opus_val32 Emid, Eside;
Emid = Eside = EPSILON;
if (stereo)
{
for (i=0;i<N;i++)
{
celt_norm m, s;
m = ADD16(SHR16(X[i],1),SHR16(Y[i],1));
s = SUB16(SHR16(X[i],1),SHR16(Y[i],1));
Emid = MAC16_16(Emid, m, m);
Eside = MAC16_16(Eside, s, s);
}
} else {
for (i=0;i<N;i++)
{
celt_norm m, s;
m = X[i];
s = Y[i];
Emid = MAC16_16(Emid, m, m);
Eside = MAC16_16(Eside, s, s);
}
}
mid = celt_sqrt(Emid);
side = celt_sqrt(Eside);
#ifdef FIXED_POINT
/* 0.63662 = 2/pi */
itheta = MULT16_16_Q15(QCONST16(0.63662f,15),celt_atan2p(side, mid));
#else
itheta = (int)floor(.5f+16384*0.63662f*atan2(side,mid));
#endif
return itheta;
}

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/* Copyright (c) 2007-2008 CSIRO
Copyright (c) 2007-2009 Xiph.Org Foundation
Written by Jean-Marc Valin */
/**
@file vq.h
@brief Vector quantisation of the residual
*/
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef VQ_H
#define VQ_H
#include "entenc.h"
#include "entdec.h"
#include "modes.h"
/** Algebraic pulse-vector quantiser. The signal x is replaced by the sum of
* the pitch and a combination of pulses such that its norm is still equal
* to 1. This is the function that will typically require the most CPU.
* @param X Residual signal to quantise/encode (returns quantised version)
* @param N Number of samples to encode
* @param K Number of pulses to use
* @param enc Entropy encoder state
* @ret A mask indicating which blocks in the band received pulses
*/
unsigned alg_quant(celt_norm *X, int N, int K, int spread, int B,
ec_enc *enc
#ifdef RESYNTH
, opus_val16 gain
#endif
);
/** Algebraic pulse decoder
* @param X Decoded normalised spectrum (returned)
* @param N Number of samples to decode
* @param K Number of pulses to use
* @param dec Entropy decoder state
* @ret A mask indicating which blocks in the band received pulses
*/
unsigned alg_unquant(celt_norm *X, int N, int K, int spread, int B,
ec_dec *dec, opus_val16 gain);
void renormalise_vector(celt_norm *X, int N, opus_val16 gain);
int stereo_itheta(celt_norm *X, celt_norm *Y, int stereo, int N);
#endif /* VQ_H */

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/* Copyright (c) 2013 Jean-Marc Valin and John Ridges */
/**
@file pitch_sse.h
@brief Pitch analysis
*/
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef PITCH_SSE_H
#define PITCH_SSE_H
#include <xmmintrin.h>
#include "arch.h"
#define OVERRIDE_XCORR_KERNEL
static OPUS_INLINE void xcorr_kernel(const opus_val16 *x, const opus_val16 *y, opus_val32 sum[4], int len)
{
int j;
__m128 xsum1, xsum2;
xsum1 = _mm_loadu_ps(sum);
xsum2 = _mm_setzero_ps();
for (j = 0; j < len-3; j += 4)
{
__m128 x0 = _mm_loadu_ps(x+j);
__m128 yj = _mm_loadu_ps(y+j);
__m128 y3 = _mm_loadu_ps(y+j+3);
xsum1 = _mm_add_ps(xsum1,_mm_mul_ps(_mm_shuffle_ps(x0,x0,0x00),yj));
xsum2 = _mm_add_ps(xsum2,_mm_mul_ps(_mm_shuffle_ps(x0,x0,0x55),
_mm_shuffle_ps(yj,y3,0x49)));
xsum1 = _mm_add_ps(xsum1,_mm_mul_ps(_mm_shuffle_ps(x0,x0,0xaa),
_mm_shuffle_ps(yj,y3,0x9e)));
xsum2 = _mm_add_ps(xsum2,_mm_mul_ps(_mm_shuffle_ps(x0,x0,0xff),y3));
}
if (j < len)
{
xsum1 = _mm_add_ps(xsum1,_mm_mul_ps(_mm_load1_ps(x+j),_mm_loadu_ps(y+j)));
if (++j < len)
{
xsum2 = _mm_add_ps(xsum2,_mm_mul_ps(_mm_load1_ps(x+j),_mm_loadu_ps(y+j)));
if (++j < len)
{
xsum1 = _mm_add_ps(xsum1,_mm_mul_ps(_mm_load1_ps(x+j),_mm_loadu_ps(y+j)));
}
}
}
_mm_storeu_ps(sum,_mm_add_ps(xsum1,xsum2));
}
#define OVERRIDE_DUAL_INNER_PROD
static OPUS_INLINE void dual_inner_prod(const opus_val16 *x, const opus_val16 *y01, const opus_val16 *y02,
int N, opus_val32 *xy1, opus_val32 *xy2)
{
int i;
__m128 xsum1, xsum2;
xsum1 = _mm_setzero_ps();
xsum2 = _mm_setzero_ps();
for (i=0;i<N-3;i+=4)
{
__m128 xi = _mm_loadu_ps(x+i);
__m128 y1i = _mm_loadu_ps(y01+i);
__m128 y2i = _mm_loadu_ps(y02+i);
xsum1 = _mm_add_ps(xsum1,_mm_mul_ps(xi, y1i));
xsum2 = _mm_add_ps(xsum2,_mm_mul_ps(xi, y2i));
}
/* Horizontal sum */
xsum1 = _mm_add_ps(xsum1, _mm_movehl_ps(xsum1, xsum1));
xsum1 = _mm_add_ss(xsum1, _mm_shuffle_ps(xsum1, xsum1, 0x55));
_mm_store_ss(xy1, xsum1);
xsum2 = _mm_add_ps(xsum2, _mm_movehl_ps(xsum2, xsum2));
xsum2 = _mm_add_ss(xsum2, _mm_shuffle_ps(xsum2, xsum2, 0x55));
_mm_store_ss(xy2, xsum2);
for (;i<N;i++)
{
*xy1 = MAC16_16(*xy1, x[i], y01[i]);
*xy2 = MAC16_16(*xy2, x[i], y02[i]);
}
}
#define OVERRIDE_COMB_FILTER_CONST
static OPUS_INLINE void comb_filter_const(opus_val32 *y, opus_val32 *x, int T, int N,
opus_val16 g10, opus_val16 g11, opus_val16 g12)
{
int i;
__m128 x0v;
__m128 g10v, g11v, g12v;
g10v = _mm_load1_ps(&g10);
g11v = _mm_load1_ps(&g11);
g12v = _mm_load1_ps(&g12);
x0v = _mm_loadu_ps(&x[-T-2]);
for (i=0;i<N-3;i+=4)
{
__m128 yi, yi2, x1v, x2v, x3v, x4v;
const opus_val32 *xp = &x[i-T-2];
yi = _mm_loadu_ps(x+i);
x4v = _mm_loadu_ps(xp+4);
#if 0
/* Slower version with all loads */
x1v = _mm_loadu_ps(xp+1);
x2v = _mm_loadu_ps(xp+2);
x3v = _mm_loadu_ps(xp+3);
#else
x2v = _mm_shuffle_ps(x0v, x4v, 0x4e);
x1v = _mm_shuffle_ps(x0v, x2v, 0x99);
x3v = _mm_shuffle_ps(x2v, x4v, 0x99);
#endif
yi = _mm_add_ps(yi, _mm_mul_ps(g10v,x2v));
#if 0 /* Set to 1 to make it bit-exact with the non-SSE version */
yi = _mm_add_ps(yi, _mm_mul_ps(g11v,_mm_add_ps(x3v,x1v)));
yi = _mm_add_ps(yi, _mm_mul_ps(g12v,_mm_add_ps(x4v,x0v)));
#else
/* Use partial sums */
yi2 = _mm_add_ps(_mm_mul_ps(g11v,_mm_add_ps(x3v,x1v)),
_mm_mul_ps(g12v,_mm_add_ps(x4v,x0v)));
yi = _mm_add_ps(yi, yi2);
#endif
x0v=x4v;
_mm_storeu_ps(y+i, yi);
}
#ifdef CUSTOM_MODES
for (;i<N;i++)
{
y[i] = x[i]
+ MULT16_32_Q15(g10,x[i-T])
+ MULT16_32_Q15(g11,ADD32(x[i-T+1],x[i-T-1]))
+ MULT16_32_Q15(g12,ADD32(x[i-T+2],x[i-T-2]));
}
#endif
}
#endif

161
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/* config.h. Generated from config.h.in by configure. */
/* config.h.in. Generated from configure.ac by autoheader. */
/* Custom modes */
/* #undef CUSTOM_MODES */
/* Do not build the float API */
/* #undef DISABLE_FLOAT_API */
/* Assertions */
/* #undef ENABLE_ASSERTIONS */
/* Debug fixed-point implementation */
/* #undef FIXED_DEBUG */
/* Compile as fixed-point (for machines without a fast enough FPU) */
/* #undef FIXED_POINT */
/* Float approximations */
/* #undef FLOAT_APPROX */
/* Fuzzing */
/* #undef FUZZING */
/* Define to 1 if you have the <alloca.h> header file. */
/* #undef HAVE_ALLOCA_H */
/* Define to 1 if you have the <dlfcn.h> header file. */
#define HAVE_DLFCN_H 1
/* Define to 1 if you have the <inttypes.h> header file. */
#define HAVE_INTTYPES_H 1
/* Define to 1 if you have the `lrint' function. */
#define HAVE_LRINT 1
/* Define to 1 if you have the `lrintf' function. */
#define HAVE_LRINTF 1
/* Define to 1 if you have the <memory.h> header file. */
#define HAVE_MEMORY_H 1
/* Define to 1 if you have the <stdint.h> header file. */
#define HAVE_STDINT_H 1
/* Define to 1 if you have the <stdlib.h> header file. */
#define HAVE_STDLIB_H 1
/* Define to 1 if you have the <strings.h> header file. */
#define HAVE_STRINGS_H 1
/* Define to 1 if you have the <string.h> header file. */
#define HAVE_STRING_H 1
/* Define to 1 if you have the <sys/stat.h> header file. */
#define HAVE_SYS_STAT_H 1
/* Define to 1 if you have the <sys/types.h> header file. */
#define HAVE_SYS_TYPES_H 1
/* Define to 1 if you have the <unistd.h> header file. */
#define HAVE_UNISTD_H 1
/* Define to 1 if you have the `__malloc_hook' function. */
#define HAVE___MALLOC_HOOK 1
/* Define to the sub-directory in which libtool stores uninstalled libraries.
*/
#define LT_OBJDIR ".libs/"
/* Define to 1 if your C compiler doesn't accept -c and -o together. */
/* #undef NO_MINUS_C_MINUS_O */
/* Make use of ARM asm optimization */
/* #undef OPUS_ARM_ASM */
/* Use generic ARMv4 inline asm optimizations */
/* #undef OPUS_ARM_INLINE_ASM */
/* Use ARMv5E inline asm optimizations */
/* #undef OPUS_ARM_INLINE_EDSP */
/* Use ARMv6 inline asm optimizations */
/* #undef OPUS_ARM_INLINE_MEDIA */
/* Use ARM NEON inline asm optimizations */
/* #undef OPUS_ARM_INLINE_NEON */
/* Define if assembler supports EDSP instructions */
/* #undef OPUS_ARM_MAY_HAVE_EDSP */
/* Define if assembler supports ARMv6 media instructions */
/* #undef OPUS_ARM_MAY_HAVE_MEDIA */
/* Define if compiler supports NEON instructions */
/* #undef OPUS_ARM_MAY_HAVE_NEON */
/* Define if binary requires EDSP instruction support */
/* #undef OPUS_ARM_PRESUME_EDSP */
/* Define if binary requires ARMv6 media instruction support */
/* #undef OPUS_ARM_PRESUME_MEDIA */
/* Define if binary requires NEON instruction support */
/* #undef OPUS_ARM_PRESUME_NEON */
/* This is a build of OPUS */
#define OPUS_BUILD /**/
/* Use run-time CPU capabilities detection */
/* #undef OPUS_HAVE_RTCD */
/* Define to the address where bug reports for this package should be sent. */
#define PACKAGE_BUGREPORT "opus@xiph.org"
/* Define to the full name of this package. */
#define PACKAGE_NAME "opus"
/* Define to the full name and version of this package. */
#define PACKAGE_STRING "opus 1.1"
/* Define to the one symbol short name of this package. */
#define PACKAGE_TARNAME "opus"
/* Define to the home page for this package. */
#define PACKAGE_URL ""
/* Define to the version of this package. */
#define PACKAGE_VERSION "1.1"
/* Define to 1 if you have the ANSI C header files. */
#define STDC_HEADERS 1
/* Make use of alloca */
/* #undef USE_ALLOCA */
/* Use C99 variable-size arrays */
#define VAR_ARRAYS 1
/* Define to empty if `const' does not conform to ANSI C. */
/* #undef const */
/* Define to `__inline__' or `__inline' if that's what the C compiler
calls it, or to nothing if 'inline' is not supported under any name. */
#ifndef __cplusplus
/* #undef inline */
#endif
/* Define to the equivalent of the C99 'restrict' keyword, or to
nothing if this is not supported. Do not define if restrict is
supported directly. */
#define restrict __restrict
/* Work around a bug in Sun C++: it does not support _Restrict or
__restrict__, even though the corresponding Sun C compiler ends up with
"#define restrict _Restrict" or "#define restrict __restrict__" in the
previous line. Perhaps some future version of Sun C++ will work with
restrict; if so, hopefully it defines __RESTRICT like Sun C does. */
#if defined __SUNPRO_CC && !defined __RESTRICT
# define _Restrict
# define __restrict__
#endif

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/* Copyright (c) 2008-2011 Octasic Inc.
Written by Jean-Marc Valin */
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "opus_types.h"
#include "opus_defines.h"
#include <math.h>
#include "mlp.h"
#include "arch.h"
#include "tansig_table.h"
#define MAX_NEURONS 100
#if 0
static OPUS_INLINE opus_val16 tansig_approx(opus_val32 _x) /* Q19 */
{
int i;
opus_val16 xx; /* Q11 */
/*double x, y;*/
opus_val16 dy, yy; /* Q14 */
/*x = 1.9073e-06*_x;*/
if (_x>=QCONST32(8,19))
return QCONST32(1.,14);
if (_x<=-QCONST32(8,19))
return -QCONST32(1.,14);
xx = EXTRACT16(SHR32(_x, 8));
/*i = lrint(25*x);*/
i = SHR32(ADD32(1024,MULT16_16(25, xx)),11);
/*x -= .04*i;*/
xx -= EXTRACT16(SHR32(MULT16_16(20972,i),8));
/*x = xx*(1./2048);*/
/*y = tansig_table[250+i];*/
yy = tansig_table[250+i];
/*y = yy*(1./16384);*/
dy = 16384-MULT16_16_Q14(yy,yy);
yy = yy + MULT16_16_Q14(MULT16_16_Q11(xx,dy),(16384 - MULT16_16_Q11(yy,xx)));
return yy;
}
#else
/*extern const float tansig_table[501];*/
static OPUS_INLINE float tansig_approx(float x)
{
int i;
float y, dy;
float sign=1;
/* Tests are reversed to catch NaNs */
if (!(x<8))
return 1;
if (!(x>-8))
return -1;
if (x<0)
{
x=-x;
sign=-1;
}
i = (int)floor(.5f+25*x);
x -= .04f*i;
y = tansig_table[i];
dy = 1-y*y;
y = y + x*dy*(1 - y*x);
return sign*y;
}
#endif
#if 0
void mlp_process(const MLP *m, const opus_val16 *in, opus_val16 *out)
{
int j;
opus_val16 hidden[MAX_NEURONS];
const opus_val16 *W = m->weights;
/* Copy to tmp_in */
for (j=0;j<m->topo[1];j++)
{
int k;
opus_val32 sum = SHL32(EXTEND32(*W++),8);
for (k=0;k<m->topo[0];k++)
sum = MAC16_16(sum, in[k],*W++);
hidden[j] = tansig_approx(sum);
}
for (j=0;j<m->topo[2];j++)
{
int k;
opus_val32 sum = SHL32(EXTEND32(*W++),14);
for (k=0;k<m->topo[1];k++)
sum = MAC16_16(sum, hidden[k], *W++);
out[j] = tansig_approx(EXTRACT16(PSHR32(sum,17)));
}
}
#else
void mlp_process(const MLP *m, const float *in, float *out)
{
int j;
float hidden[MAX_NEURONS];
const float *W = m->weights;
/* Copy to tmp_in */
for (j=0;j<m->topo[1];j++)
{
int k;
float sum = *W++;
for (k=0;k<m->topo[0];k++)
sum = sum + in[k]**W++;
hidden[j] = tansig_approx(sum);
}
for (j=0;j<m->topo[2];j++)
{
int k;
float sum = *W++;
for (k=0;k<m->topo[1];k++)
sum = sum + hidden[k]**W++;
out[j] = tansig_approx(sum);
}
}
#endif

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/* Copyright (c) 2008-2011 Octasic Inc.
Written by Jean-Marc Valin */
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _MLP_H_
#define _MLP_H_
#include "arch.h"
typedef struct {
int layers;
const int *topo;
const float *weights;
} MLP;
void mlp_process(const MLP *m, const float *in, float *out);
#endif /* _MLP_H_ */

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/* The contents of this file was automatically generated by mlp_train.c
It contains multi-layer perceptron (MLP) weights. */
#include "mlp.h"
/* RMS error was 0.138320, seed was 1361535663 */
static const float weights[422] = {
/* hidden layer */
-0.0941125f, -0.302976f, -0.603555f, -0.19393f, -0.185983f,
-0.601617f, -0.0465317f, -0.114563f, -0.103599f, -0.618938f,
-0.317859f, -0.169949f, -0.0702885f, 0.148065f, 0.409524f,
0.548432f, 0.367649f, -0.494393f, 0.764306f, -1.83957f,
0.170849f, 12.786f, -1.08848f, -1.27284f, -16.2606f,
24.1773f, -5.57454f, -0.17276f, -0.163388f, -0.224421f,
-0.0948944f, -0.0728695f, -0.26557f, -0.100283f, -0.0515459f,
-0.146142f, -0.120674f, -0.180655f, 0.12857f, 0.442138f,
-0.493735f, 0.167767f, 0.206699f, -0.197567f, 0.417999f,
1.50364f, -0.773341f, -10.0401f, 0.401872f, 2.97966f,
15.2165f, -1.88905f, -1.19254f, 0.0285397f, -0.00405139f,
0.0707565f, 0.00825699f, -0.0927269f, -0.010393f, -0.00428882f,
-0.00489743f, -0.0709731f, -0.00255992f, 0.0395619f, 0.226424f,
0.0325231f, 0.162175f, -0.100118f, 0.485789f, 0.12697f,
0.285937f, 0.0155637f, 0.10546f, 3.05558f, 1.15059f,
-1.00904f, -1.83088f, 3.31766f, -3.42516f, -0.119135f,
-0.0405654f, 0.00690068f, 0.0179877f, -0.0382487f, 0.00597941f,
-0.0183611f, 0.00190395f, -0.144322f, -0.0435671f, 0.000990594f,
0.221087f, 0.142405f, 0.484066f, 0.404395f, 0.511955f,
-0.237255f, 0.241742f, 0.35045f, -0.699428f, 10.3993f,
2.6507f, -2.43459f, -4.18838f, 1.05928f, 1.71067f,
0.00667811f, -0.0721335f, -0.0397346f, 0.0362704f, -0.11496f,
-0.0235776f, 0.0082161f, -0.0141741f, -0.0329699f, -0.0354253f,
0.00277404f, -0.290654f, -1.14767f, -0.319157f, -0.686544f,
0.36897f, 0.478899f, 0.182579f, -0.411069f, 0.881104f,
-4.60683f, 1.4697f, 0.335845f, -1.81905f, -30.1699f,
5.55225f, 0.0019508f, -0.123576f, -0.0727332f, -0.0641597f,
-0.0534458f, -0.108166f, -0.0937368f, -0.0697883f, -0.0275475f,
-0.192309f, -0.110074f, 0.285375f, -0.405597f, 0.0926724f,
-0.287881f, -0.851193f, -0.099493f, -0.233764f, -1.2852f,
1.13611f, 3.12168f, -0.0699f, -1.86216f, 2.65292f,
-7.31036f, 2.44776f, -0.00111802f, -0.0632786f, -0.0376296f,
-0.149851f, 0.142963f, 0.184368f, 0.123433f, 0.0756158f,
0.117312f, 0.0933395f, 0.0692163f, 0.0842592f, 0.0704683f,
0.0589963f, 0.0942205f, -0.448862f, 0.0262677f, 0.270352f,
-0.262317f, 0.172586f, 2.00227f, -0.159216f, 0.038422f,
10.2073f, 4.15536f, -2.3407f, -0.0550265f, 0.00964792f,
-0.141336f, 0.0274501f, 0.0343921f, -0.0487428f, 0.0950172f,
-0.00775017f, -0.0372492f, -0.00548121f, -0.0663695f, 0.0960506f,
-0.200008f, -0.0412827f, 0.58728f, 0.0515787f, 0.337254f,
0.855024f, 0.668371f, -0.114904f, -3.62962f, -0.467477f,
-0.215472f, 2.61537f, 0.406117f, -1.36373f, 0.0425394f,
0.12208f, 0.0934502f, 0.123055f, 0.0340935f, -0.142466f,
0.035037f, -0.0490666f, 0.0733208f, 0.0576672f, 0.123984f,
-0.0517194f, -0.253018f, 0.590565f, 0.145849f, 0.315185f,
0.221534f, -0.149081f, 0.216161f, -0.349575f, 24.5664f,
-0.994196f, 0.614289f, -18.7905f, -2.83277f, -0.716801f,
-0.347201f, 0.479515f, -0.246027f, 0.0758683f, 0.137293f,
-0.17781f, 0.118751f, -0.00108329f, -0.237334f, 0.355732f,
-0.12991f, -0.0547627f, -0.318576f, -0.325524f, 0.180494f,
-0.0625604f, 0.141219f, 0.344064f, 0.37658f, -0.591772f,
5.8427f, -0.38075f, 0.221894f, -1.41934f, -1.87943e+06f,
1.34114f, 0.0283355f, -0.0447856f, -0.0211466f, -0.0256927f,
0.0139618f, 0.0207934f, -0.0107666f, 0.0110969f, 0.0586069f,
-0.0253545f, -0.0328433f, 0.11872f, -0.216943f, 0.145748f,
0.119808f, -0.0915211f, -0.120647f, -0.0787719f, -0.143644f,
-0.595116f, -1.152f, -1.25335f, -1.17092f, 4.34023f,
-975268.f, -1.37033f, -0.0401123f, 0.210602f, -0.136656f,
0.135962f, -0.0523293f, 0.0444604f, 0.0143928f, 0.00412666f,
-0.0193003f, 0.218452f, -0.110204f, -2.02563f, 0.918238f,
-2.45362f, 1.19542f, -0.061362f, -1.92243f, 0.308111f,
0.49764f, 0.912356f, 0.209272f, -2.34525f, 2.19326f,
-6.47121f, 1.69771f, -0.725123f, 0.0118929f, 0.0377944f,
0.0554003f, 0.0226452f, -0.0704421f, -0.0300309f, 0.0122978f,
-0.0041782f, -0.0686612f, 0.0313115f, 0.039111f, 0.364111f,
-0.0945548f, 0.0229876f, -0.17414f, 0.329795f, 0.114714f,
0.30022f, 0.106997f, 0.132355f, 5.79932f, 0.908058f,
-0.905324f, -3.3561f, 0.190647f, 0.184211f, -0.673648f,
0.231807f, -0.0586222f, 0.230752f, -0.438277f, 0.245857f,
-0.17215f, 0.0876383f, -0.720512f, 0.162515f, 0.0170571f,
0.101781f, 0.388477f, 1.32931f, 1.08548f, -0.936301f,
-2.36958f, -6.71988f, -3.44376f, 2.13818f, 14.2318f,
4.91459f, -3.09052f, -9.69191f, -0.768234f, 1.79604f,
0.0549653f, 0.163399f, 0.0797025f, 0.0343933f, -0.0555876f,
-0.00505673f, 0.0187258f, 0.0326628f, 0.0231486f, 0.15573f,
0.0476223f, -0.254824f, 1.60155f, -0.801221f, 2.55496f,
0.737629f, -1.36249f, -0.695463f, -2.44301f, -1.73188f,
3.95279f, 1.89068f, 0.486087f, -11.3343f, 3.9416e+06f,
/* output layer */
-0.381439f, 0.12115f, -0.906927f, 2.93878f, 1.6388f,
0.882811f, 0.874344f, 1.21726f, -0.874545f, 0.321706f,
0.785055f, 0.946558f, -0.575066f, -3.46553f, 0.884905f,
0.0924047f, -9.90712f, 0.391338f, 0.160103f, -2.04954f,
4.1455f, 0.0684029f, -0.144761f, -0.285282f, 0.379244f,
-1.1584f, -0.0277241f, -9.85f, -4.82386f, 3.71333f,
3.87308f, 3.52558f};
static const int topo[3] = {25, 15, 2};
const MLP net = {
3,
topo,
weights
};

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/* Copyright (c) 2011 Xiph.Org Foundation, Skype Limited
Written by Jean-Marc Valin and Koen Vos */
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "opus.h"
#include "opus_private.h"
#ifndef DISABLE_FLOAT_API
OPUS_EXPORT void opus_pcm_soft_clip(float *_x, int N, int C, float *declip_mem)
{
int c;
int i;
float *x;
if (C<1 || N<1 || !_x || !declip_mem) return;
/* First thing: saturate everything to +/- 2 which is the highest level our
non-linearity can handle. At the point where the signal reaches +/-2,
the derivative will be zero anyway, so this doesn't introduce any
discontinuity in the derivative. */
for (i=0;i<N*C;i++)
_x[i] = MAX16(-2.f, MIN16(2.f, _x[i]));
for (c=0;c<C;c++)
{
float a;
float x0;
int curr;
x = _x+c;
a = declip_mem[c];
/* Continue applying the non-linearity from the previous frame to avoid
any discontinuity. */
for (i=0;i<N;i++)
{
if (x[i*C]*a>=0)
break;
x[i*C] = x[i*C]+a*x[i*C]*x[i*C];
}
curr=0;
x0 = x[0];
while(1)
{
int start, end;
float maxval;
int special=0;
int peak_pos;
for (i=curr;i<N;i++)
{
if (x[i*C]>1 || x[i*C]<-1)
break;
}
if (i==N)
{
a=0;
break;
}
peak_pos = i;
start=end=i;
maxval=ABS16(x[i*C]);
/* Look for first zero crossing before clipping */
while (start>0 && x[i*C]*x[(start-1)*C]>=0)
start--;
/* Look for first zero crossing after clipping */
while (end<N && x[i*C]*x[end*C]>=0)
{
/* Look for other peaks until the next zero-crossing. */
if (ABS16(x[end*C])>maxval)
{
maxval = ABS16(x[end*C]);
peak_pos = end;
}
end++;
}
/* Detect the special case where we clip before the first zero crossing */
special = (start==0 && x[i*C]*x[0]>=0);
/* Compute a such that maxval + a*maxval^2 = 1 */
a=(maxval-1)/(maxval*maxval);
if (x[i*C]>0)
a = -a;
/* Apply soft clipping */
for (i=start;i<end;i++)
x[i*C] = x[i*C]+a*x[i*C]*x[i*C];
if (special && peak_pos>=2)
{
/* Add a linear ramp from the first sample to the signal peak.
This avoids a discontinuity at the beginning of the frame. */
float delta;
float offset = x0-x[0];
delta = offset / peak_pos;
for (i=curr;i<peak_pos;i++)
{
offset -= delta;
x[i*C] += offset;
x[i*C] = MAX16(-1.f, MIN16(1.f, x[i*C]));
}
}
curr = end;
if (curr==N)
break;
}
declip_mem[c] = a;
}
}
#endif
int encode_size(int size, unsigned char *data)
{
if (size < 252)
{
data[0] = size;
return 1;
} else {
data[0] = 252+(size&0x3);
data[1] = (size-(int)data[0])>>2;
return 2;
}
}
static int parse_size(const unsigned char *data, opus_int32 len, opus_int16 *size)
{
if (len<1)
{
*size = -1;
return -1;
} else if (data[0]<252)
{
*size = data[0];
return 1;
} else if (len<2)
{
*size = -1;
return -1;
} else {
*size = 4*data[1] + data[0];
return 2;
}
}
int opus_packet_parse_impl(const unsigned char *data, opus_int32 len,
int self_delimited, unsigned char *out_toc,
const unsigned char *frames[48], opus_int16 size[48],
int *payload_offset, opus_int32 *packet_offset)
{
int i, bytes;
int count;
int cbr;
unsigned char ch, toc;
int framesize;
opus_int32 last_size;
opus_int32 pad = 0;
const unsigned char *data0 = data;
if (size==NULL)
return OPUS_BAD_ARG;
framesize = opus_packet_get_samples_per_frame(data, 48000);
cbr = 0;
toc = *data++;
len--;
last_size = len;
switch (toc&0x3)
{
/* One frame */
case 0:
count=1;
break;
/* Two CBR frames */
case 1:
count=2;
cbr = 1;
if (!self_delimited)
{
if (len&0x1)
return OPUS_INVALID_PACKET;
last_size = len/2;
/* If last_size doesn't fit in size[0], we'll catch it later */
size[0] = (opus_int16)last_size;
}
break;
/* Two VBR frames */
case 2:
count = 2;
bytes = parse_size(data, len, size);
len -= bytes;
if (size[0]<0 || size[0] > len)
return OPUS_INVALID_PACKET;
data += bytes;
last_size = len-size[0];
break;
/* Multiple CBR/VBR frames (from 0 to 120 ms) */
default: /*case 3:*/
if (len<1)
return OPUS_INVALID_PACKET;
/* Number of frames encoded in bits 0 to 5 */
ch = *data++;
count = ch&0x3F;
if (count <= 0 || framesize*count > 5760)
return OPUS_INVALID_PACKET;
len--;
/* Padding flag is bit 6 */
if (ch&0x40)
{
int p;
do {
int tmp;
if (len<=0)
return OPUS_INVALID_PACKET;
p = *data++;
len--;
tmp = p==255 ? 254: p;
len -= tmp;
pad += tmp;
} while (p==255);
}
if (len<0)
return OPUS_INVALID_PACKET;
/* VBR flag is bit 7 */
cbr = !(ch&0x80);
if (!cbr)
{
/* VBR case */
last_size = len;
for (i=0;i<count-1;i++)
{
bytes = parse_size(data, len, size+i);
len -= bytes;
if (size[i]<0 || size[i] > len)
return OPUS_INVALID_PACKET;
data += bytes;
last_size -= bytes+size[i];
}
if (last_size<0)
return OPUS_INVALID_PACKET;
} else if (!self_delimited)
{
/* CBR case */
last_size = len/count;
if (last_size*count!=len)
return OPUS_INVALID_PACKET;
for (i=0;i<count-1;i++)
size[i] = (opus_int16)last_size;
}
break;
}
/* Self-delimited framing has an extra size for the last frame. */
if (self_delimited)
{
bytes = parse_size(data, len, size+count-1);
len -= bytes;
if (size[count-1]<0 || size[count-1] > len)
return OPUS_INVALID_PACKET;
data += bytes;
/* For CBR packets, apply the size to all the frames. */
if (cbr)
{
if (size[count-1]*count > len)
return OPUS_INVALID_PACKET;
for (i=0;i<count-1;i++)
size[i] = size[count-1];
} else if (bytes+size[count-1] > last_size)
return OPUS_INVALID_PACKET;
} else
{
/* Because it's not encoded explicitly, it's possible the size of the
last packet (or all the packets, for the CBR case) is larger than
1275. Reject them here.*/
if (last_size > 1275)
return OPUS_INVALID_PACKET;
size[count-1] = (opus_int16)last_size;
}
if (payload_offset)
*payload_offset = (int)(data-data0);
for (i=0;i<count;i++)
{
if (frames)
frames[i] = data;
data += size[i];
}
if (packet_offset)
*packet_offset = pad+(opus_int32)(data-data0);
if (out_toc)
*out_toc = toc;
return count;
}
int opus_packet_parse(const unsigned char *data, opus_int32 len,
unsigned char *out_toc, const unsigned char *frames[48],
opus_int16 size[48], int *payload_offset)
{
return opus_packet_parse_impl(data, len, 0, out_toc,
frames, size, payload_offset, NULL);
}

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/* Copyright (c) 2010-2011 Xiph.Org Foundation, Skype Limited
Written by Jean-Marc Valin and Koen Vos */
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/**
* @file opus.h
* @brief Opus reference implementation API
*/
#ifndef OPUS_H
#define OPUS_H
#include "opus_types.h"
#include "opus_defines.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @mainpage Opus
*
* The Opus codec is designed for interactive speech and audio transmission over the Internet.
* It is designed by the IETF Codec Working Group and incorporates technology from
* Skype's SILK codec and Xiph.Org's CELT codec.
*
* The Opus codec is designed to handle a wide range of interactive audio applications,
* including Voice over IP, videoconferencing, in-game chat, and even remote live music
* performances. It can scale from low bit-rate narrowband speech to very high quality
* stereo music. Its main features are:
* @li Sampling rates from 8 to 48 kHz
* @li Bit-rates from 6 kb/s to 510 kb/s
* @li Support for both constant bit-rate (CBR) and variable bit-rate (VBR)
* @li Audio bandwidth from narrowband to full-band
* @li Support for speech and music
* @li Support for mono and stereo
* @li Support for multichannel (up to 255 channels)
* @li Frame sizes from 2.5 ms to 60 ms
* @li Good loss robustness and packet loss concealment (PLC)
* @li Floating point and fixed-point implementation
*
* Documentation sections:
* @li @ref opus_encoder
* @li @ref opus_decoder
* @li @ref opus_repacketizer
* @li @ref opus_multistream
* @li @ref opus_libinfo
* @li @ref opus_custom
*/
/** @defgroup opus_encoder Opus Encoder
* @{
*
* @brief This page describes the process and functions used to encode Opus.
*
* Since Opus is a stateful codec, the encoding process starts with creating an encoder
* state. This can be done with:
*
* @code
* int error;
* OpusEncoder *enc;
* enc = opus_encoder_create(Fs, channels, application, &error);
* @endcode
*
* From this point, @c enc can be used for encoding an audio stream. An encoder state
* @b must @b not be used for more than one stream at the same time. Similarly, the encoder
* state @b must @b not be re-initialized for each frame.
*
* While opus_encoder_create() allocates memory for the state, it's also possible
* to initialize pre-allocated memory:
*
* @code
* int size;
* int error;
* OpusEncoder *enc;
* size = opus_encoder_get_size(channels);
* enc = malloc(size);
* error = opus_encoder_init(enc, Fs, channels, application);
* @endcode
*
* where opus_encoder_get_size() returns the required size for the encoder state. Note that
* future versions of this code may change the size, so no assuptions should be made about it.
*
* The encoder state is always continuous in memory and only a shallow copy is sufficient
* to copy it (e.g. memcpy())
*
* It is possible to change some of the encoder's settings using the opus_encoder_ctl()
* interface. All these settings already default to the recommended value, so they should
* only be changed when necessary. The most common settings one may want to change are:
*
* @code
* opus_encoder_ctl(enc, OPUS_SET_BITRATE(bitrate));
* opus_encoder_ctl(enc, OPUS_SET_COMPLEXITY(complexity));
* opus_encoder_ctl(enc, OPUS_SET_SIGNAL(signal_type));
* @endcode
*
* where
*
* @arg bitrate is in bits per second (b/s)
* @arg complexity is a value from 1 to 10, where 1 is the lowest complexity and 10 is the highest
* @arg signal_type is either OPUS_AUTO (default), OPUS_SIGNAL_VOICE, or OPUS_SIGNAL_MUSIC
*
* See @ref opus_encoderctls and @ref opus_genericctls for a complete list of parameters that can be set or queried. Most parameters can be set or changed at any time during a stream.
*
* To encode a frame, opus_encode() or opus_encode_float() must be called with exactly one frame (2.5, 5, 10, 20, 40 or 60 ms) of audio data:
* @code
* len = opus_encode(enc, audio_frame, frame_size, packet, max_packet);
* @endcode
*
* where
* <ul>
* <li>audio_frame is the audio data in opus_int16 (or float for opus_encode_float())</li>
* <li>frame_size is the duration of the frame in samples (per channel)</li>
* <li>packet is the byte array to which the compressed data is written</li>
* <li>max_packet is the maximum number of bytes that can be written in the packet (4000 bytes is recommended).
* Do not use max_packet to control VBR target bitrate, instead use the #OPUS_SET_BITRATE CTL.</li>
* </ul>
*
* opus_encode() and opus_encode_float() return the number of bytes actually written to the packet.
* The return value <b>can be negative</b>, which indicates that an error has occurred. If the return value
* is 1 byte, then the packet does not need to be transmitted (DTX).
*
* Once the encoder state if no longer needed, it can be destroyed with
*
* @code
* opus_encoder_destroy(enc);
* @endcode
*
* If the encoder was created with opus_encoder_init() rather than opus_encoder_create(),
* then no action is required aside from potentially freeing the memory that was manually
* allocated for it (calling free(enc) for the example above)
*
*/
/** Opus encoder state.
* This contains the complete state of an Opus encoder.
* It is position independent and can be freely copied.
* @see opus_encoder_create,opus_encoder_init
*/
typedef struct OpusEncoder OpusEncoder;
/** Gets the size of an <code>OpusEncoder</code> structure.
* @param[in] channels <tt>int</tt>: Number of channels.
* This must be 1 or 2.
* @returns The size in bytes.
*/
OPUS_EXPORT OPUS_WARN_UNUSED_RESULT int opus_encoder_get_size(int channels);
/**
*/
/** Allocates and initializes an encoder state.
* There are three coding modes:
*
* @ref OPUS_APPLICATION_VOIP gives best quality at a given bitrate for voice
* signals. It enhances the input signal by high-pass filtering and
* emphasizing formants and harmonics. Optionally it includes in-band
* forward error correction to protect against packet loss. Use this
* mode for typical VoIP applications. Because of the enhancement,
* even at high bitrates the output may sound different from the input.
*
* @ref OPUS_APPLICATION_AUDIO gives best quality at a given bitrate for most
* non-voice signals like music. Use this mode for music and mixed
* (music/voice) content, broadcast, and applications requiring less
* than 15 ms of coding delay.
*
* @ref OPUS_APPLICATION_RESTRICTED_LOWDELAY configures low-delay mode that
* disables the speech-optimized mode in exchange for slightly reduced delay.
* This mode can only be set on an newly initialized or freshly reset encoder
* because it changes the codec delay.
*
* This is useful when the caller knows that the speech-optimized modes will not be needed (use with caution).
* @param [in] Fs <tt>opus_int32</tt>: Sampling rate of input signal (Hz)
* This must be one of 8000, 12000, 16000,
* 24000, or 48000.
* @param [in] channels <tt>int</tt>: Number of channels (1 or 2) in input signal
* @param [in] application <tt>int</tt>: Coding mode (@ref OPUS_APPLICATION_VOIP/@ref OPUS_APPLICATION_AUDIO/@ref OPUS_APPLICATION_RESTRICTED_LOWDELAY)
* @param [out] error <tt>int*</tt>: @ref opus_errorcodes
* @note Regardless of the sampling rate and number channels selected, the Opus encoder
* can switch to a lower audio bandwidth or number of channels if the bitrate
* selected is too low. This also means that it is safe to always use 48 kHz stereo input
* and let the encoder optimize the encoding.
*/
OPUS_EXPORT OPUS_WARN_UNUSED_RESULT OpusEncoder *opus_encoder_create(
opus_int32 Fs,
int channels,
int application,
int *error
);
/** Initializes a previously allocated encoder state
* The memory pointed to by st must be at least the size returned by opus_encoder_get_size().
* This is intended for applications which use their own allocator instead of malloc.
* @see opus_encoder_create(),opus_encoder_get_size()
* To reset a previously initialized state, use the #OPUS_RESET_STATE CTL.
* @param [in] st <tt>OpusEncoder*</tt>: Encoder state
* @param [in] Fs <tt>opus_int32</tt>: Sampling rate of input signal (Hz)
* This must be one of 8000, 12000, 16000,
* 24000, or 48000.
* @param [in] channels <tt>int</tt>: Number of channels (1 or 2) in input signal
* @param [in] application <tt>int</tt>: Coding mode (OPUS_APPLICATION_VOIP/OPUS_APPLICATION_AUDIO/OPUS_APPLICATION_RESTRICTED_LOWDELAY)
* @retval #OPUS_OK Success or @ref opus_errorcodes
*/
OPUS_EXPORT int opus_encoder_init(
OpusEncoder *st,
opus_int32 Fs,
int channels,
int application
) OPUS_ARG_NONNULL(1);
/** Encodes an Opus frame.
* @param [in] st <tt>OpusEncoder*</tt>: Encoder state
* @param [in] pcm <tt>opus_int16*</tt>: Input signal (interleaved if 2 channels). length is frame_size*channels*sizeof(opus_int16)
* @param [in] frame_size <tt>int</tt>: Number of samples per channel in the
* input signal.
* This must be an Opus frame size for
* the encoder's sampling rate.
* For example, at 48 kHz the permitted
* values are 120, 240, 480, 960, 1920,
* and 2880.
* Passing in a duration of less than
* 10 ms (480 samples at 48 kHz) will
* prevent the encoder from using the LPC
* or hybrid modes.
* @param [out] data <tt>unsigned char*</tt>: Output payload.
* This must contain storage for at
* least \a max_data_bytes.
* @param [in] max_data_bytes <tt>opus_int32</tt>: Size of the allocated
* memory for the output
* payload. This may be
* used to impose an upper limit on
* the instant bitrate, but should
* not be used as the only bitrate
* control. Use #OPUS_SET_BITRATE to
* control the bitrate.
* @returns The length of the encoded packet (in bytes) on success or a
* negative error code (see @ref opus_errorcodes) on failure.
*/
OPUS_EXPORT OPUS_WARN_UNUSED_RESULT opus_int32 opus_encode(
OpusEncoder *st,
const opus_int16 *pcm,
int frame_size,
unsigned char *data,
opus_int32 max_data_bytes
) OPUS_ARG_NONNULL(1) OPUS_ARG_NONNULL(2) OPUS_ARG_NONNULL(4);
/** Encodes an Opus frame from floating point input.
* @param [in] st <tt>OpusEncoder*</tt>: Encoder state
* @param [in] pcm <tt>float*</tt>: Input in float format (interleaved if 2 channels), with a normal range of +/-1.0.
* Samples with a range beyond +/-1.0 are supported but will
* be clipped by decoders using the integer API and should
* only be used if it is known that the far end supports
* extended dynamic range.
* length is frame_size*channels*sizeof(float)
* @param [in] frame_size <tt>int</tt>: Number of samples per channel in the
* input signal.
* This must be an Opus frame size for
* the encoder's sampling rate.
* For example, at 48 kHz the permitted
* values are 120, 240, 480, 960, 1920,
* and 2880.
* Passing in a duration of less than
* 10 ms (480 samples at 48 kHz) will
* prevent the encoder from using the LPC
* or hybrid modes.
* @param [out] data <tt>unsigned char*</tt>: Output payload.
* This must contain storage for at
* least \a max_data_bytes.
* @param [in] max_data_bytes <tt>opus_int32</tt>: Size of the allocated
* memory for the output
* payload. This may be
* used to impose an upper limit on
* the instant bitrate, but should
* not be used as the only bitrate
* control. Use #OPUS_SET_BITRATE to
* control the bitrate.
* @returns The length of the encoded packet (in bytes) on success or a
* negative error code (see @ref opus_errorcodes) on failure.
*/
OPUS_EXPORT OPUS_WARN_UNUSED_RESULT opus_int32 opus_encode_float(
OpusEncoder *st,
const float *pcm,
int frame_size,
unsigned char *data,
opus_int32 max_data_bytes
) OPUS_ARG_NONNULL(1) OPUS_ARG_NONNULL(2) OPUS_ARG_NONNULL(4);
/** Frees an <code>OpusEncoder</code> allocated by opus_encoder_create().
* @param[in] st <tt>OpusEncoder*</tt>: State to be freed.
*/
OPUS_EXPORT void opus_encoder_destroy(OpusEncoder *st);
/** Perform a CTL function on an Opus encoder.
*
* Generally the request and subsequent arguments are generated
* by a convenience macro.
* @param st <tt>OpusEncoder*</tt>: Encoder state.
* @param request This and all remaining parameters should be replaced by one
* of the convenience macros in @ref opus_genericctls or
* @ref opus_encoderctls.
* @see opus_genericctls
* @see opus_encoderctls
*/
OPUS_EXPORT int opus_encoder_ctl(OpusEncoder *st, int request, ...) OPUS_ARG_NONNULL(1);
/**@}*/
/** @defgroup opus_decoder Opus Decoder
* @{
*
* @brief This page describes the process and functions used to decode Opus.
*
* The decoding process also starts with creating a decoder
* state. This can be done with:
* @code
* int error;
* OpusDecoder *dec;
* dec = opus_decoder_create(Fs, channels, &error);
* @endcode
* where
* @li Fs is the sampling rate and must be 8000, 12000, 16000, 24000, or 48000
* @li channels is the number of channels (1 or 2)
* @li error will hold the error code in case of failure (or #OPUS_OK on success)
* @li the return value is a newly created decoder state to be used for decoding
*
* While opus_decoder_create() allocates memory for the state, it's also possible
* to initialize pre-allocated memory:
* @code
* int size;
* int error;
* OpusDecoder *dec;
* size = opus_decoder_get_size(channels);
* dec = malloc(size);
* error = opus_decoder_init(dec, Fs, channels);
* @endcode
* where opus_decoder_get_size() returns the required size for the decoder state. Note that
* future versions of this code may change the size, so no assuptions should be made about it.
*
* The decoder state is always continuous in memory and only a shallow copy is sufficient
* to copy it (e.g. memcpy())
*
* To decode a frame, opus_decode() or opus_decode_float() must be called with a packet of compressed audio data:
* @code
* frame_size = opus_decode(dec, packet, len, decoded, max_size, 0);
* @endcode
* where
*
* @li packet is the byte array containing the compressed data
* @li len is the exact number of bytes contained in the packet
* @li decoded is the decoded audio data in opus_int16 (or float for opus_decode_float())
* @li max_size is the max duration of the frame in samples (per channel) that can fit into the decoded_frame array
*
* opus_decode() and opus_decode_float() return the number of samples (per channel) decoded from the packet.
* If that value is negative, then an error has occurred. This can occur if the packet is corrupted or if the audio
* buffer is too small to hold the decoded audio.
*
* Opus is a stateful codec with overlapping blocks and as a result Opus
* packets are not coded independently of each other. Packets must be
* passed into the decoder serially and in the correct order for a correct
* decode. Lost packets can be replaced with loss concealment by calling
* the decoder with a null pointer and zero length for the missing packet.
*
* A single codec state may only be accessed from a single thread at
* a time and any required locking must be performed by the caller. Separate
* streams must be decoded with separate decoder states and can be decoded
* in parallel unless the library was compiled with NONTHREADSAFE_PSEUDOSTACK
* defined.
*
*/
/** Opus decoder state.
* This contains the complete state of an Opus decoder.
* It is position independent and can be freely copied.
* @see opus_decoder_create,opus_decoder_init
*/
typedef struct OpusDecoder OpusDecoder;
/** Gets the size of an <code>OpusDecoder</code> structure.
* @param [in] channels <tt>int</tt>: Number of channels.
* This must be 1 or 2.
* @returns The size in bytes.
*/
OPUS_EXPORT OPUS_WARN_UNUSED_RESULT int opus_decoder_get_size(int channels);
/** Allocates and initializes a decoder state.
* @param [in] Fs <tt>opus_int32</tt>: Sample rate to decode at (Hz).
* This must be one of 8000, 12000, 16000,
* 24000, or 48000.
* @param [in] channels <tt>int</tt>: Number of channels (1 or 2) to decode
* @param [out] error <tt>int*</tt>: #OPUS_OK Success or @ref opus_errorcodes
*
* Internally Opus stores data at 48000 Hz, so that should be the default
* value for Fs. However, the decoder can efficiently decode to buffers
* at 8, 12, 16, and 24 kHz so if for some reason the caller cannot use
* data at the full sample rate, or knows the compressed data doesn't
* use the full frequency range, it can request decoding at a reduced
* rate. Likewise, the decoder is capable of filling in either mono or
* interleaved stereo pcm buffers, at the caller's request.
*/
OPUS_EXPORT OPUS_WARN_UNUSED_RESULT OpusDecoder *opus_decoder_create(
opus_int32 Fs,
int channels,
int *error
);
/** Initializes a previously allocated decoder state.
* The state must be at least the size returned by opus_decoder_get_size().
* This is intended for applications which use their own allocator instead of malloc. @see opus_decoder_create,opus_decoder_get_size
* To reset a previously initialized state, use the #OPUS_RESET_STATE CTL.
* @param [in] st <tt>OpusDecoder*</tt>: Decoder state.
* @param [in] Fs <tt>opus_int32</tt>: Sampling rate to decode to (Hz).
* This must be one of 8000, 12000, 16000,
* 24000, or 48000.
* @param [in] channels <tt>int</tt>: Number of channels (1 or 2) to decode
* @retval #OPUS_OK Success or @ref opus_errorcodes
*/
OPUS_EXPORT int opus_decoder_init(
OpusDecoder *st,
opus_int32 Fs,
int channels
) OPUS_ARG_NONNULL(1);
/** Decode an Opus packet.
* @param [in] st <tt>OpusDecoder*</tt>: Decoder state
* @param [in] data <tt>char*</tt>: Input payload. Use a NULL pointer to indicate packet loss
* @param [in] len <tt>opus_int32</tt>: Number of bytes in payload*
* @param [out] pcm <tt>opus_int16*</tt>: Output signal (interleaved if 2 channels). length
* is frame_size*channels*sizeof(opus_int16)
* @param [in] frame_size Number of samples per channel of available space in \a pcm.
* If this is less than the maximum packet duration (120ms; 5760 for 48kHz), this function will
* not be capable of decoding some packets. In the case of PLC (data==NULL) or FEC (decode_fec=1),
* then frame_size needs to be exactly the duration of audio that is missing, otherwise the
* decoder will not be in the optimal state to decode the next incoming packet. For the PLC and
* FEC cases, frame_size <b>must</b> be a multiple of 2.5 ms.
* @param [in] decode_fec <tt>int</tt>: Flag (0 or 1) to request that any in-band forward error correction data be
* decoded. If no such data is available, the frame is decoded as if it were lost.
* @returns Number of decoded samples or @ref opus_errorcodes
*/
OPUS_EXPORT OPUS_WARN_UNUSED_RESULT int opus_decode(
OpusDecoder *st,
const unsigned char *data,
opus_int32 len,
opus_int16 *pcm,
int frame_size,
int decode_fec
) OPUS_ARG_NONNULL(1) OPUS_ARG_NONNULL(4);
/** Decode an Opus packet with floating point output.
* @param [in] st <tt>OpusDecoder*</tt>: Decoder state
* @param [in] data <tt>char*</tt>: Input payload. Use a NULL pointer to indicate packet loss
* @param [in] len <tt>opus_int32</tt>: Number of bytes in payload
* @param [out] pcm <tt>float*</tt>: Output signal (interleaved if 2 channels). length
* is frame_size*channels*sizeof(float)
* @param [in] frame_size Number of samples per channel of available space in \a pcm.
* If this is less than the maximum packet duration (120ms; 5760 for 48kHz), this function will
* not be capable of decoding some packets. In the case of PLC (data==NULL) or FEC (decode_fec=1),
* then frame_size needs to be exactly the duration of audio that is missing, otherwise the
* decoder will not be in the optimal state to decode the next incoming packet. For the PLC and
* FEC cases, frame_size <b>must</b> be a multiple of 2.5 ms.
* @param [in] decode_fec <tt>int</tt>: Flag (0 or 1) to request that any in-band forward error correction data be
* decoded. If no such data is available the frame is decoded as if it were lost.
* @returns Number of decoded samples or @ref opus_errorcodes
*/
OPUS_EXPORT OPUS_WARN_UNUSED_RESULT int opus_decode_float(
OpusDecoder *st,
const unsigned char *data,
opus_int32 len,
float *pcm,
int frame_size,
int decode_fec
) OPUS_ARG_NONNULL(1) OPUS_ARG_NONNULL(4);
/** Perform a CTL function on an Opus decoder.
*
* Generally the request and subsequent arguments are generated
* by a convenience macro.
* @param st <tt>OpusDecoder*</tt>: Decoder state.
* @param request This and all remaining parameters should be replaced by one
* of the convenience macros in @ref opus_genericctls or
* @ref opus_decoderctls.
* @see opus_genericctls
* @see opus_decoderctls
*/
OPUS_EXPORT int opus_decoder_ctl(OpusDecoder *st, int request, ...) OPUS_ARG_NONNULL(1);
/** Frees an <code>OpusDecoder</code> allocated by opus_decoder_create().
* @param[in] st <tt>OpusDecoder*</tt>: State to be freed.
*/
OPUS_EXPORT void opus_decoder_destroy(OpusDecoder *st);
/** Parse an opus packet into one or more frames.
* Opus_decode will perform this operation internally so most applications do
* not need to use this function.
* This function does not copy the frames, the returned pointers are pointers into
* the input packet.
* @param [in] data <tt>char*</tt>: Opus packet to be parsed
* @param [in] len <tt>opus_int32</tt>: size of data
* @param [out] out_toc <tt>char*</tt>: TOC pointer
* @param [out] frames <tt>char*[48]</tt> encapsulated frames
* @param [out] size <tt>opus_int16[48]</tt> sizes of the encapsulated frames
* @param [out] payload_offset <tt>int*</tt>: returns the position of the payload within the packet (in bytes)
* @returns number of frames
*/
OPUS_EXPORT int opus_packet_parse(
const unsigned char *data,
opus_int32 len,
unsigned char *out_toc,
const unsigned char *frames[48],
opus_int16 size[48],
int *payload_offset
) OPUS_ARG_NONNULL(1) OPUS_ARG_NONNULL(4);
/** Gets the bandwidth of an Opus packet.
* @param [in] data <tt>char*</tt>: Opus packet
* @retval OPUS_BANDWIDTH_NARROWBAND Narrowband (4kHz bandpass)
* @retval OPUS_BANDWIDTH_MEDIUMBAND Mediumband (6kHz bandpass)
* @retval OPUS_BANDWIDTH_WIDEBAND Wideband (8kHz bandpass)
* @retval OPUS_BANDWIDTH_SUPERWIDEBAND Superwideband (12kHz bandpass)
* @retval OPUS_BANDWIDTH_FULLBAND Fullband (20kHz bandpass)
* @retval OPUS_INVALID_PACKET The compressed data passed is corrupted or of an unsupported type
*/
OPUS_EXPORT OPUS_WARN_UNUSED_RESULT int opus_packet_get_bandwidth(const unsigned char *data) OPUS_ARG_NONNULL(1);
/** Gets the number of samples per frame from an Opus packet.
* @param [in] data <tt>char*</tt>: Opus packet.
* This must contain at least one byte of
* data.
* @param [in] Fs <tt>opus_int32</tt>: Sampling rate in Hz.
* This must be a multiple of 400, or
* inaccurate results will be returned.
* @returns Number of samples per frame.
*/
OPUS_EXPORT OPUS_WARN_UNUSED_RESULT int opus_packet_get_samples_per_frame(const unsigned char *data, opus_int32 Fs) OPUS_ARG_NONNULL(1);
/** Gets the number of channels from an Opus packet.
* @param [in] data <tt>char*</tt>: Opus packet
* @returns Number of channels
* @retval OPUS_INVALID_PACKET The compressed data passed is corrupted or of an unsupported type
*/
OPUS_EXPORT OPUS_WARN_UNUSED_RESULT int opus_packet_get_nb_channels(const unsigned char *data) OPUS_ARG_NONNULL(1);
/** Gets the number of frames in an Opus packet.
* @param [in] packet <tt>char*</tt>: Opus packet
* @param [in] len <tt>opus_int32</tt>: Length of packet
* @returns Number of frames
* @retval OPUS_BAD_ARG Insufficient data was passed to the function
* @retval OPUS_INVALID_PACKET The compressed data passed is corrupted or of an unsupported type
*/
OPUS_EXPORT OPUS_WARN_UNUSED_RESULT int opus_packet_get_nb_frames(const unsigned char packet[], opus_int32 len) OPUS_ARG_NONNULL(1);
/** Gets the number of samples of an Opus packet.
* @param [in] packet <tt>char*</tt>: Opus packet
* @param [in] len <tt>opus_int32</tt>: Length of packet
* @param [in] Fs <tt>opus_int32</tt>: Sampling rate in Hz.
* This must be a multiple of 400, or
* inaccurate results will be returned.
* @returns Number of samples
* @retval OPUS_BAD_ARG Insufficient data was passed to the function
* @retval OPUS_INVALID_PACKET The compressed data passed is corrupted or of an unsupported type
*/
OPUS_EXPORT OPUS_WARN_UNUSED_RESULT int opus_packet_get_nb_samples(const unsigned char packet[], opus_int32 len, opus_int32 Fs) OPUS_ARG_NONNULL(1);
/** Gets the number of samples of an Opus packet.
* @param [in] dec <tt>OpusDecoder*</tt>: Decoder state
* @param [in] packet <tt>char*</tt>: Opus packet
* @param [in] len <tt>opus_int32</tt>: Length of packet
* @returns Number of samples
* @retval OPUS_BAD_ARG Insufficient data was passed to the function
* @retval OPUS_INVALID_PACKET The compressed data passed is corrupted or of an unsupported type
*/
OPUS_EXPORT OPUS_WARN_UNUSED_RESULT int opus_decoder_get_nb_samples(const OpusDecoder *dec, const unsigned char packet[], opus_int32 len) OPUS_ARG_NONNULL(1) OPUS_ARG_NONNULL(2);
/** Applies soft-clipping to bring a float signal within the [-1,1] range. If
* the signal is already in that range, nothing is done. If there are values
* outside of [-1,1], then the signal is clipped as smoothly as possible to
* both fit in the range and avoid creating excessive distortion in the
* process.
* @param [in,out] pcm <tt>float*</tt>: Input PCM and modified PCM
* @param [in] frame_size <tt>int</tt> Number of samples per channel to process
* @param [in] channels <tt>int</tt>: Number of channels
* @param [in,out] softclip_mem <tt>float*</tt>: State memory for the soft clipping process (one float per channel, initialized to zero)
*/
OPUS_EXPORT void opus_pcm_soft_clip(float *pcm, int frame_size, int channels, float *softclip_mem);
/**@}*/
/** @defgroup opus_repacketizer Repacketizer
* @{
*
* The repacketizer can be used to merge multiple Opus packets into a single
* packet or alternatively to split Opus packets that have previously been
* merged. Splitting valid Opus packets is always guaranteed to succeed,
* whereas merging valid packets only succeeds if all frames have the same
* mode, bandwidth, and frame size, and when the total duration of the merged
* packet is no more than 120 ms.
* The repacketizer currently only operates on elementary Opus
* streams. It will not manipualte multistream packets successfully, except in
* the degenerate case where they consist of data from a single stream.
*
* The repacketizing process starts with creating a repacketizer state, either
* by calling opus_repacketizer_create() or by allocating the memory yourself,
* e.g.,
* @code
* OpusRepacketizer *rp;
* rp = (OpusRepacketizer*)malloc(opus_repacketizer_get_size());
* if (rp != NULL)
* opus_repacketizer_init(rp);
* @endcode
*
* Then the application should submit packets with opus_repacketizer_cat(),
* extract new packets with opus_repacketizer_out() or
* opus_repacketizer_out_range(), and then reset the state for the next set of
* input packets via opus_repacketizer_init().
*
* For example, to split a sequence of packets into individual frames:
* @code
* unsigned char *data;
* int len;
* while (get_next_packet(&data, &len))
* {
* unsigned char out[1276];
* opus_int32 out_len;
* int nb_frames;
* int err;
* int i;
* err = opus_repacketizer_cat(rp, data, len);
* if (err != OPUS_OK)
* {
* release_packet(data);
* return err;
* }
* nb_frames = opus_repacketizer_get_nb_frames(rp);
* for (i = 0; i < nb_frames; i++)
* {
* out_len = opus_repacketizer_out_range(rp, i, i+1, out, sizeof(out));
* if (out_len < 0)
* {
* release_packet(data);
* return (int)out_len;
* }
* output_next_packet(out, out_len);
* }
* opus_repacketizer_init(rp);
* release_packet(data);
* }
* @endcode
*
* Alternatively, to combine a sequence of frames into packets that each
* contain up to <code>TARGET_DURATION_MS</code> milliseconds of data:
* @code
* // The maximum number of packets with duration TARGET_DURATION_MS occurs
* // when the frame size is 2.5 ms, for a total of (TARGET_DURATION_MS*2/5)
* // packets.
* unsigned char *data[(TARGET_DURATION_MS*2/5)+1];
* opus_int32 len[(TARGET_DURATION_MS*2/5)+1];
* int nb_packets;
* unsigned char out[1277*(TARGET_DURATION_MS*2/2)];
* opus_int32 out_len;
* int prev_toc;
* nb_packets = 0;
* while (get_next_packet(data+nb_packets, len+nb_packets))
* {
* int nb_frames;
* int err;
* nb_frames = opus_packet_get_nb_frames(data[nb_packets], len[nb_packets]);
* if (nb_frames < 1)
* {
* release_packets(data, nb_packets+1);
* return nb_frames;
* }
* nb_frames += opus_repacketizer_get_nb_frames(rp);
* // If adding the next packet would exceed our target, or it has an
* // incompatible TOC sequence, output the packets we already have before
* // submitting it.
* // N.B., The nb_packets > 0 check ensures we've submitted at least one
* // packet since the last call to opus_repacketizer_init(). Otherwise a
* // single packet longer than TARGET_DURATION_MS would cause us to try to
* // output an (invalid) empty packet. It also ensures that prev_toc has
* // been set to a valid value. Additionally, len[nb_packets] > 0 is
* // guaranteed by the call to opus_packet_get_nb_frames() above, so the
* // reference to data[nb_packets][0] should be valid.
* if (nb_packets > 0 && (
* ((prev_toc & 0xFC) != (data[nb_packets][0] & 0xFC)) ||
* opus_packet_get_samples_per_frame(data[nb_packets], 48000)*nb_frames >
* TARGET_DURATION_MS*48))
* {
* out_len = opus_repacketizer_out(rp, out, sizeof(out));
* if (out_len < 0)
* {
* release_packets(data, nb_packets+1);
* return (int)out_len;
* }
* output_next_packet(out, out_len);
* opus_repacketizer_init(rp);
* release_packets(data, nb_packets);
* data[0] = data[nb_packets];
* len[0] = len[nb_packets];
* nb_packets = 0;
* }
* err = opus_repacketizer_cat(rp, data[nb_packets], len[nb_packets]);
* if (err != OPUS_OK)
* {
* release_packets(data, nb_packets+1);
* return err;
* }
* prev_toc = data[nb_packets][0];
* nb_packets++;
* }
* // Output the final, partial packet.
* if (nb_packets > 0)
* {
* out_len = opus_repacketizer_out(rp, out, sizeof(out));
* release_packets(data, nb_packets);
* if (out_len < 0)
* return (int)out_len;
* output_next_packet(out, out_len);
* }
* @endcode
*
* An alternate way of merging packets is to simply call opus_repacketizer_cat()
* unconditionally until it fails. At that point, the merged packet can be
* obtained with opus_repacketizer_out() and the input packet for which
* opus_repacketizer_cat() needs to be re-added to a newly reinitialized
* repacketizer state.
*/
typedef struct OpusRepacketizer OpusRepacketizer;
/** Gets the size of an <code>OpusRepacketizer</code> structure.
* @returns The size in bytes.
*/
OPUS_EXPORT OPUS_WARN_UNUSED_RESULT int opus_repacketizer_get_size(void);
/** (Re)initializes a previously allocated repacketizer state.
* The state must be at least the size returned by opus_repacketizer_get_size().
* This can be used for applications which use their own allocator instead of
* malloc().
* It must also be called to reset the queue of packets waiting to be
* repacketized, which is necessary if the maximum packet duration of 120 ms
* is reached or if you wish to submit packets with a different Opus
* configuration (coding mode, audio bandwidth, frame size, or channel count).
* Failure to do so will prevent a new packet from being added with
* opus_repacketizer_cat().
* @see opus_repacketizer_create
* @see opus_repacketizer_get_size
* @see opus_repacketizer_cat
* @param rp <tt>OpusRepacketizer*</tt>: The repacketizer state to
* (re)initialize.
* @returns A pointer to the same repacketizer state that was passed in.
*/
OPUS_EXPORT OpusRepacketizer *opus_repacketizer_init(OpusRepacketizer *rp) OPUS_ARG_NONNULL(1);
/** Allocates memory and initializes the new repacketizer with
* opus_repacketizer_init().
*/
OPUS_EXPORT OPUS_WARN_UNUSED_RESULT OpusRepacketizer *opus_repacketizer_create(void);
/** Frees an <code>OpusRepacketizer</code> allocated by
* opus_repacketizer_create().
* @param[in] rp <tt>OpusRepacketizer*</tt>: State to be freed.
*/
OPUS_EXPORT void opus_repacketizer_destroy(OpusRepacketizer *rp);
/** Add a packet to the current repacketizer state.
* This packet must match the configuration of any packets already submitted
* for repacketization since the last call to opus_repacketizer_init().
* This means that it must have the same coding mode, audio bandwidth, frame
* size, and channel count.
* This can be checked in advance by examining the top 6 bits of the first
* byte of the packet, and ensuring they match the top 6 bits of the first
* byte of any previously submitted packet.
* The total duration of audio in the repacketizer state also must not exceed
* 120 ms, the maximum duration of a single packet, after adding this packet.
*
* The contents of the current repacketizer state can be extracted into new
* packets using opus_repacketizer_out() or opus_repacketizer_out_range().
*
* In order to add a packet with a different configuration or to add more
* audio beyond 120 ms, you must clear the repacketizer state by calling
* opus_repacketizer_init().
* If a packet is too large to add to the current repacketizer state, no part
* of it is added, even if it contains multiple frames, some of which might
* fit.
* If you wish to be able to add parts of such packets, you should first use
* another repacketizer to split the packet into pieces and add them
* individually.
* @see opus_repacketizer_out_range
* @see opus_repacketizer_out
* @see opus_repacketizer_init
* @param rp <tt>OpusRepacketizer*</tt>: The repacketizer state to which to
* add the packet.
* @param[in] data <tt>const unsigned char*</tt>: The packet data.
* The application must ensure
* this pointer remains valid
* until the next call to
* opus_repacketizer_init() or
* opus_repacketizer_destroy().
* @param len <tt>opus_int32</tt>: The number of bytes in the packet data.
* @returns An error code indicating whether or not the operation succeeded.
* @retval #OPUS_OK The packet's contents have been added to the repacketizer
* state.
* @retval #OPUS_INVALID_PACKET The packet did not have a valid TOC sequence,
* the packet's TOC sequence was not compatible
* with previously submitted packets (because
* the coding mode, audio bandwidth, frame size,
* or channel count did not match), or adding
* this packet would increase the total amount of
* audio stored in the repacketizer state to more
* than 120 ms.
*/
OPUS_EXPORT int opus_repacketizer_cat(OpusRepacketizer *rp, const unsigned char *data, opus_int32 len) OPUS_ARG_NONNULL(1) OPUS_ARG_NONNULL(2);
/** Construct a new packet from data previously submitted to the repacketizer
* state via opus_repacketizer_cat().
* @param rp <tt>OpusRepacketizer*</tt>: The repacketizer state from which to
* construct the new packet.
* @param begin <tt>int</tt>: The index of the first frame in the current
* repacketizer state to include in the output.
* @param end <tt>int</tt>: One past the index of the last frame in the
* current repacketizer state to include in the
* output.
* @param[out] data <tt>const unsigned char*</tt>: The buffer in which to
* store the output packet.
* @param maxlen <tt>opus_int32</tt>: The maximum number of bytes to store in
* the output buffer. In order to guarantee
* success, this should be at least
* <code>1276</code> for a single frame,
* or for multiple frames,
* <code>1277*(end-begin)</code>.
* However, <code>1*(end-begin)</code> plus
* the size of all packet data submitted to
* the repacketizer since the last call to
* opus_repacketizer_init() or
* opus_repacketizer_create() is also
* sufficient, and possibly much smaller.
* @returns The total size of the output packet on success, or an error code
* on failure.
* @retval #OPUS_BAD_ARG <code>[begin,end)</code> was an invalid range of
* frames (begin < 0, begin >= end, or end >
* opus_repacketizer_get_nb_frames()).
* @retval #OPUS_BUFFER_TOO_SMALL \a maxlen was insufficient to contain the
* complete output packet.
*/
OPUS_EXPORT OPUS_WARN_UNUSED_RESULT opus_int32 opus_repacketizer_out_range(OpusRepacketizer *rp, int begin, int end, unsigned char *data, opus_int32 maxlen) OPUS_ARG_NONNULL(1) OPUS_ARG_NONNULL(4);
/** Return the total number of frames contained in packet data submitted to
* the repacketizer state so far via opus_repacketizer_cat() since the last
* call to opus_repacketizer_init() or opus_repacketizer_create().
* This defines the valid range of packets that can be extracted with
* opus_repacketizer_out_range() or opus_repacketizer_out().
* @param rp <tt>OpusRepacketizer*</tt>: The repacketizer state containing the
* frames.
* @returns The total number of frames contained in the packet data submitted
* to the repacketizer state.
*/
OPUS_EXPORT OPUS_WARN_UNUSED_RESULT int opus_repacketizer_get_nb_frames(OpusRepacketizer *rp) OPUS_ARG_NONNULL(1);
/** Construct a new packet from data previously submitted to the repacketizer
* state via opus_repacketizer_cat().
* This is a convenience routine that returns all the data submitted so far
* in a single packet.
* It is equivalent to calling
* @code
* opus_repacketizer_out_range(rp, 0, opus_repacketizer_get_nb_frames(rp),
* data, maxlen)
* @endcode
* @param rp <tt>OpusRepacketizer*</tt>: The repacketizer state from which to
* construct the new packet.
* @param[out] data <tt>const unsigned char*</tt>: The buffer in which to
* store the output packet.
* @param maxlen <tt>opus_int32</tt>: The maximum number of bytes to store in
* the output buffer. In order to guarantee
* success, this should be at least
* <code>1277*opus_repacketizer_get_nb_frames(rp)</code>.
* However,
* <code>1*opus_repacketizer_get_nb_frames(rp)</code>
* plus the size of all packet data
* submitted to the repacketizer since the
* last call to opus_repacketizer_init() or
* opus_repacketizer_create() is also
* sufficient, and possibly much smaller.
* @returns The total size of the output packet on success, or an error code
* on failure.
* @retval #OPUS_BUFFER_TOO_SMALL \a maxlen was insufficient to contain the
* complete output packet.
*/
OPUS_EXPORT OPUS_WARN_UNUSED_RESULT opus_int32 opus_repacketizer_out(OpusRepacketizer *rp, unsigned char *data, opus_int32 maxlen) OPUS_ARG_NONNULL(1);
/** Pads a given Opus packet to a larger size (possibly changing the TOC sequence).
* @param[in,out] data <tt>const unsigned char*</tt>: The buffer containing the
* packet to pad.
* @param len <tt>opus_int32</tt>: The size of the packet.
* This must be at least 1.
* @param new_len <tt>opus_int32</tt>: The desired size of the packet after padding.
* This must be at least as large as len.
* @returns an error code
* @retval #OPUS_OK \a on success.
* @retval #OPUS_BAD_ARG \a len was less than 1 or new_len was less than len.
* @retval #OPUS_INVALID_PACKET \a data did not contain a valid Opus packet.
*/
OPUS_EXPORT int opus_packet_pad(unsigned char *data, opus_int32 len, opus_int32 new_len);
/** Remove all padding from a given Opus packet and rewrite the TOC sequence to
* minimize space usage.
* @param[in,out] data <tt>const unsigned char*</tt>: The buffer containing the
* packet to strip.
* @param len <tt>opus_int32</tt>: The size of the packet.
* This must be at least 1.
* @returns The new size of the output packet on success, or an error code
* on failure.
* @retval #OPUS_BAD_ARG \a len was less than 1.
* @retval #OPUS_INVALID_PACKET \a data did not contain a valid Opus packet.
*/
OPUS_EXPORT OPUS_WARN_UNUSED_RESULT opus_int32 opus_packet_unpad(unsigned char *data, opus_int32 len);
/** Pads a given Opus multi-stream packet to a larger size (possibly changing the TOC sequence).
* @param[in,out] data <tt>const unsigned char*</tt>: The buffer containing the
* packet to pad.
* @param len <tt>opus_int32</tt>: The size of the packet.
* This must be at least 1.
* @param new_len <tt>opus_int32</tt>: The desired size of the packet after padding.
* This must be at least 1.
* @param nb_streams <tt>opus_int32</tt>: The number of streams (not channels) in the packet.
* This must be at least as large as len.
* @returns an error code
* @retval #OPUS_OK \a on success.
* @retval #OPUS_BAD_ARG \a len was less than 1.
* @retval #OPUS_INVALID_PACKET \a data did not contain a valid Opus packet.
*/
OPUS_EXPORT int opus_multistream_packet_pad(unsigned char *data, opus_int32 len, opus_int32 new_len, int nb_streams);
/** Remove all padding from a given Opus multi-stream packet and rewrite the TOC sequence to
* minimize space usage.
* @param[in,out] data <tt>const unsigned char*</tt>: The buffer containing the
* packet to strip.
* @param len <tt>opus_int32</tt>: The size of the packet.
* This must be at least 1.
* @param nb_streams <tt>opus_int32</tt>: The number of streams (not channels) in the packet.
* This must be at least 1.
* @returns The new size of the output packet on success, or an error code
* on failure.
* @retval #OPUS_BAD_ARG \a len was less than 1 or new_len was less than len.
* @retval #OPUS_INVALID_PACKET \a data did not contain a valid Opus packet.
*/
OPUS_EXPORT OPUS_WARN_UNUSED_RESULT opus_int32 opus_multistream_packet_unpad(unsigned char *data, opus_int32 len, int nb_streams);
/**@}*/
#ifdef __cplusplus
}
#endif
#endif /* OPUS_H */

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/* Copyright (c) 2007-2008 CSIRO
Copyright (c) 2007-2009 Xiph.Org Foundation
Copyright (c) 2008-2012 Gregory Maxwell
Written by Jean-Marc Valin and Gregory Maxwell */
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/**
@file opus_custom.h
@brief Opus-Custom reference implementation API
*/
#ifndef OPUS_CUSTOM_H
#define OPUS_CUSTOM_H
#include "opus_defines.h"
#ifdef __cplusplus
extern "C" {
#endif
#ifdef CUSTOM_MODES
# define OPUS_CUSTOM_EXPORT OPUS_EXPORT
# define OPUS_CUSTOM_EXPORT_STATIC OPUS_EXPORT
#else
# define OPUS_CUSTOM_EXPORT
# ifdef OPUS_BUILD
# define OPUS_CUSTOM_EXPORT_STATIC static OPUS_INLINE
# else
# define OPUS_CUSTOM_EXPORT_STATIC
# endif
#endif
/** @defgroup opus_custom Opus Custom
* @{
* Opus Custom is an optional part of the Opus specification and
* reference implementation which uses a distinct API from the regular
* API and supports frame sizes that are not normally supported.\ Use
* of Opus Custom is discouraged for all but very special applications
* for which a frame size different from 2.5, 5, 10, or 20 ms is needed
* (for either complexity or latency reasons) and where interoperability
* is less important.
*
* In addition to the interoperability limitations the use of Opus custom
* disables a substantial chunk of the codec and generally lowers the
* quality available at a given bitrate. Normally when an application needs
* a different frame size from the codec it should buffer to match the
* sizes but this adds a small amount of delay which may be important
* in some very low latency applications. Some transports (especially
* constant rate RF transports) may also work best with frames of
* particular durations.
*
* Libopus only supports custom modes if they are enabled at compile time.
*
* The Opus Custom API is similar to the regular API but the
* @ref opus_encoder_create and @ref opus_decoder_create calls take
* an additional mode parameter which is a structure produced by
* a call to @ref opus_custom_mode_create. Both the encoder and decoder
* must create a mode using the same sample rate (fs) and frame size
* (frame size) so these parameters must either be signaled out of band
* or fixed in a particular implementation.
*
* Similar to regular Opus the custom modes support on the fly frame size
* switching, but the sizes available depend on the particular frame size in
* use. For some initial frame sizes on a single on the fly size is available.
*/
/** Contains the state of an encoder. One encoder state is needed
for each stream. It is initialized once at the beginning of the
stream. Do *not* re-initialize the state for every frame.
@brief Encoder state
*/
typedef struct OpusCustomEncoder OpusCustomEncoder;
/** State of the decoder. One decoder state is needed for each stream.
It is initialized once at the beginning of the stream. Do *not*
re-initialize the state for every frame.
@brief Decoder state
*/
typedef struct OpusCustomDecoder OpusCustomDecoder;
/** The mode contains all the information necessary to create an
encoder. Both the encoder and decoder need to be initialized
with exactly the same mode, otherwise the output will be
corrupted.
@brief Mode configuration
*/
typedef struct OpusCustomMode OpusCustomMode;
/** Creates a new mode struct. This will be passed to an encoder or
* decoder. The mode MUST NOT BE DESTROYED until the encoders and
* decoders that use it are destroyed as well.
* @param [in] Fs <tt>int</tt>: Sampling rate (8000 to 96000 Hz)
* @param [in] frame_size <tt>int</tt>: Number of samples (per channel) to encode in each
* packet (64 - 1024, prime factorization must contain zero or more 2s, 3s, or 5s and no other primes)
* @param [out] error <tt>int*</tt>: Returned error code (if NULL, no error will be returned)
* @return A newly created mode
*/
OPUS_CUSTOM_EXPORT OPUS_WARN_UNUSED_RESULT OpusCustomMode *opus_custom_mode_create(opus_int32 Fs, int frame_size, int *error);
/** Destroys a mode struct. Only call this after all encoders and
* decoders using this mode are destroyed as well.
* @param [in] mode <tt>OpusCustomMode*</tt>: Mode to be freed.
*/
OPUS_CUSTOM_EXPORT void opus_custom_mode_destroy(OpusCustomMode *mode);
#if !defined(OPUS_BUILD) || defined(CELT_ENCODER_C)
/* Encoder */
/** Gets the size of an OpusCustomEncoder structure.
* @param [in] mode <tt>OpusCustomMode *</tt>: Mode configuration
* @param [in] channels <tt>int</tt>: Number of channels
* @returns size
*/
OPUS_CUSTOM_EXPORT_STATIC OPUS_WARN_UNUSED_RESULT int opus_custom_encoder_get_size(
const OpusCustomMode *mode,
int channels
) OPUS_ARG_NONNULL(1);
# ifdef CUSTOM_MODES
/** Initializes a previously allocated encoder state
* The memory pointed to by st must be the size returned by opus_custom_encoder_get_size.
* This is intended for applications which use their own allocator instead of malloc.
* @see opus_custom_encoder_create(),opus_custom_encoder_get_size()
* To reset a previously initialized state use the OPUS_RESET_STATE CTL.
* @param [in] st <tt>OpusCustomEncoder*</tt>: Encoder state
* @param [in] mode <tt>OpusCustomMode *</tt>: Contains all the information about the characteristics of
* the stream (must be the same characteristics as used for the
* decoder)
* @param [in] channels <tt>int</tt>: Number of channels
* @return OPUS_OK Success or @ref opus_errorcodes
*/
OPUS_CUSTOM_EXPORT int opus_custom_encoder_init(
OpusCustomEncoder *st,
const OpusCustomMode *mode,
int channels
) OPUS_ARG_NONNULL(1) OPUS_ARG_NONNULL(2);
# endif
#endif
/** Creates a new encoder state. Each stream needs its own encoder
* state (can't be shared across simultaneous streams).
* @param [in] mode <tt>OpusCustomMode*</tt>: Contains all the information about the characteristics of
* the stream (must be the same characteristics as used for the
* decoder)
* @param [in] channels <tt>int</tt>: Number of channels
* @param [out] error <tt>int*</tt>: Returns an error code
* @return Newly created encoder state.
*/
OPUS_CUSTOM_EXPORT OPUS_WARN_UNUSED_RESULT OpusCustomEncoder *opus_custom_encoder_create(
const OpusCustomMode *mode,
int channels,
int *error
) OPUS_ARG_NONNULL(1);
/** Destroys a an encoder state.
* @param[in] st <tt>OpusCustomEncoder*</tt>: State to be freed.
*/
OPUS_CUSTOM_EXPORT void opus_custom_encoder_destroy(OpusCustomEncoder *st);
/** Encodes a frame of audio.
* @param [in] st <tt>OpusCustomEncoder*</tt>: Encoder state
* @param [in] pcm <tt>float*</tt>: PCM audio in float format, with a normal range of +/-1.0.
* Samples with a range beyond +/-1.0 are supported but will
* be clipped by decoders using the integer API and should
* only be used if it is known that the far end supports
* extended dynamic range. There must be exactly
* frame_size samples per channel.
* @param [in] frame_size <tt>int</tt>: Number of samples per frame of input signal
* @param [out] compressed <tt>char *</tt>: The compressed data is written here. This may not alias pcm and must be at least maxCompressedBytes long.
* @param [in] maxCompressedBytes <tt>int</tt>: Maximum number of bytes to use for compressing the frame
* (can change from one frame to another)
* @return Number of bytes written to "compressed".
* If negative, an error has occurred (see error codes). It is IMPORTANT that
* the length returned be somehow transmitted to the decoder. Otherwise, no
* decoding is possible.
*/
OPUS_CUSTOM_EXPORT OPUS_WARN_UNUSED_RESULT int opus_custom_encode_float(
OpusCustomEncoder *st,
const float *pcm,
int frame_size,
unsigned char *compressed,
int maxCompressedBytes
) OPUS_ARG_NONNULL(1) OPUS_ARG_NONNULL(2) OPUS_ARG_NONNULL(4);
/** Encodes a frame of audio.
* @param [in] st <tt>OpusCustomEncoder*</tt>: Encoder state
* @param [in] pcm <tt>opus_int16*</tt>: PCM audio in signed 16-bit format (native endian).
* There must be exactly frame_size samples per channel.
* @param [in] frame_size <tt>int</tt>: Number of samples per frame of input signal
* @param [out] compressed <tt>char *</tt>: The compressed data is written here. This may not alias pcm and must be at least maxCompressedBytes long.
* @param [in] maxCompressedBytes <tt>int</tt>: Maximum number of bytes to use for compressing the frame
* (can change from one frame to another)
* @return Number of bytes written to "compressed".
* If negative, an error has occurred (see error codes). It is IMPORTANT that
* the length returned be somehow transmitted to the decoder. Otherwise, no
* decoding is possible.
*/
OPUS_CUSTOM_EXPORT OPUS_WARN_UNUSED_RESULT int opus_custom_encode(
OpusCustomEncoder *st,
const opus_int16 *pcm,
int frame_size,
unsigned char *compressed,
int maxCompressedBytes
) OPUS_ARG_NONNULL(1) OPUS_ARG_NONNULL(2) OPUS_ARG_NONNULL(4);
/** Perform a CTL function on an Opus custom encoder.
*
* Generally the request and subsequent arguments are generated
* by a convenience macro.
* @see opus_encoderctls
*/
OPUS_CUSTOM_EXPORT int opus_custom_encoder_ctl(OpusCustomEncoder * OPUS_RESTRICT st, int request, ...) OPUS_ARG_NONNULL(1);
#if !defined(OPUS_BUILD) || defined(CELT_DECODER_C)
/* Decoder */
/** Gets the size of an OpusCustomDecoder structure.
* @param [in] mode <tt>OpusCustomMode *</tt>: Mode configuration
* @param [in] channels <tt>int</tt>: Number of channels
* @returns size
*/
OPUS_CUSTOM_EXPORT_STATIC OPUS_WARN_UNUSED_RESULT int opus_custom_decoder_get_size(
const OpusCustomMode *mode,
int channels
) OPUS_ARG_NONNULL(1);
/** Initializes a previously allocated decoder state
* The memory pointed to by st must be the size returned by opus_custom_decoder_get_size.
* This is intended for applications which use their own allocator instead of malloc.
* @see opus_custom_decoder_create(),opus_custom_decoder_get_size()
* To reset a previously initialized state use the OPUS_RESET_STATE CTL.
* @param [in] st <tt>OpusCustomDecoder*</tt>: Decoder state
* @param [in] mode <tt>OpusCustomMode *</tt>: Contains all the information about the characteristics of
* the stream (must be the same characteristics as used for the
* encoder)
* @param [in] channels <tt>int</tt>: Number of channels
* @return OPUS_OK Success or @ref opus_errorcodes
*/
OPUS_CUSTOM_EXPORT_STATIC int opus_custom_decoder_init(
OpusCustomDecoder *st,
const OpusCustomMode *mode,
int channels
) OPUS_ARG_NONNULL(1) OPUS_ARG_NONNULL(2);
#endif
/** Creates a new decoder state. Each stream needs its own decoder state (can't
* be shared across simultaneous streams).
* @param [in] mode <tt>OpusCustomMode</tt>: Contains all the information about the characteristics of the
* stream (must be the same characteristics as used for the encoder)
* @param [in] channels <tt>int</tt>: Number of channels
* @param [out] error <tt>int*</tt>: Returns an error code
* @return Newly created decoder state.
*/
OPUS_CUSTOM_EXPORT OPUS_WARN_UNUSED_RESULT OpusCustomDecoder *opus_custom_decoder_create(
const OpusCustomMode *mode,
int channels,
int *error
) OPUS_ARG_NONNULL(1);
/** Destroys a an decoder state.
* @param[in] st <tt>OpusCustomDecoder*</tt>: State to be freed.
*/
OPUS_CUSTOM_EXPORT void opus_custom_decoder_destroy(OpusCustomDecoder *st);
/** Decode an opus custom frame with floating point output
* @param [in] st <tt>OpusCustomDecoder*</tt>: Decoder state
* @param [in] data <tt>char*</tt>: Input payload. Use a NULL pointer to indicate packet loss
* @param [in] len <tt>int</tt>: Number of bytes in payload
* @param [out] pcm <tt>float*</tt>: Output signal (interleaved if 2 channels). length
* is frame_size*channels*sizeof(float)
* @param [in] frame_size Number of samples per channel of available space in *pcm.
* @returns Number of decoded samples or @ref opus_errorcodes
*/
OPUS_CUSTOM_EXPORT OPUS_WARN_UNUSED_RESULT int opus_custom_decode_float(
OpusCustomDecoder *st,
const unsigned char *data,
int len,
float *pcm,
int frame_size
) OPUS_ARG_NONNULL(1) OPUS_ARG_NONNULL(4);
/** Decode an opus custom frame
* @param [in] st <tt>OpusCustomDecoder*</tt>: Decoder state
* @param [in] data <tt>char*</tt>: Input payload. Use a NULL pointer to indicate packet loss
* @param [in] len <tt>int</tt>: Number of bytes in payload
* @param [out] pcm <tt>opus_int16*</tt>: Output signal (interleaved if 2 channels). length
* is frame_size*channels*sizeof(opus_int16)
* @param [in] frame_size Number of samples per channel of available space in *pcm.
* @returns Number of decoded samples or @ref opus_errorcodes
*/
OPUS_CUSTOM_EXPORT OPUS_WARN_UNUSED_RESULT int opus_custom_decode(
OpusCustomDecoder *st,
const unsigned char *data,
int len,
opus_int16 *pcm,
int frame_size
) OPUS_ARG_NONNULL(1) OPUS_ARG_NONNULL(4);
/** Perform a CTL function on an Opus custom decoder.
*
* Generally the request and subsequent arguments are generated
* by a convenience macro.
* @see opus_genericctls
*/
OPUS_CUSTOM_EXPORT int opus_custom_decoder_ctl(OpusCustomDecoder * OPUS_RESTRICT st, int request, ...) OPUS_ARG_NONNULL(1);
/**@}*/
#ifdef __cplusplus
}
#endif
#endif /* OPUS_CUSTOM_H */

970
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/* Copyright (c) 2010 Xiph.Org Foundation, Skype Limited
Written by Jean-Marc Valin and Koen Vos */
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#ifndef OPUS_BUILD
# error "OPUS_BUILD _MUST_ be defined to build Opus. This probably means you need other defines as well, as in a config.h. See the included build files for details."
#endif
#if defined(__GNUC__) && (__GNUC__ >= 2) && !defined(__OPTIMIZE__)
# pragma message "You appear to be compiling without optimization, if so opus will be very slow."
#endif
#include <stdarg.h>
#include "celt.h"
#include "opus.h"
#include "entdec.h"
#include "modes.h"
#include "API.h"
#include "stack_alloc.h"
#include "float_cast.h"
#include "opus_private.h"
#include "os_support.h"
#include "structs.h"
#include "define.h"
#include "mathops.h"
#include "cpu_support.h"
struct OpusDecoder {
int celt_dec_offset;
int silk_dec_offset;
int channels;
opus_int32 Fs; /** Sampling rate (at the API level) */
silk_DecControlStruct DecControl;
int decode_gain;
/* Everything beyond this point gets cleared on a reset */
#define OPUS_DECODER_RESET_START stream_channels
int stream_channels;
int bandwidth;
int mode;
int prev_mode;
int frame_size;
int prev_redundancy;
int last_packet_duration;
#ifndef FIXED_POINT
opus_val16 softclip_mem[2];
#endif
opus_uint32 rangeFinal;
};
#ifdef FIXED_POINT
static OPUS_INLINE opus_int16 SAT16(opus_int32 x) {
return x > 32767 ? 32767 : x < -32768 ? -32768 : (opus_int16)x;
}
#endif
int opus_decoder_get_size(int channels)
{
int silkDecSizeBytes, celtDecSizeBytes;
int ret;
if (channels<1 || channels > 2)
return 0;
ret = silk_Get_Decoder_Size( &silkDecSizeBytes );
if(ret)
return 0;
silkDecSizeBytes = align(silkDecSizeBytes);
celtDecSizeBytes = celt_decoder_get_size(channels);
return align(sizeof(OpusDecoder))+silkDecSizeBytes+celtDecSizeBytes;
}
int opus_decoder_init(OpusDecoder *st, opus_int32 Fs, int channels)
{
void *silk_dec;
CELTDecoder *celt_dec;
int ret, silkDecSizeBytes;
if ((Fs!=48000&&Fs!=24000&&Fs!=16000&&Fs!=12000&&Fs!=8000)
|| (channels!=1&&channels!=2))
return OPUS_BAD_ARG;
OPUS_CLEAR((char*)st, opus_decoder_get_size(channels));
/* Initialize SILK encoder */
ret = silk_Get_Decoder_Size(&silkDecSizeBytes);
if (ret)
return OPUS_INTERNAL_ERROR;
silkDecSizeBytes = align(silkDecSizeBytes);
st->silk_dec_offset = align(sizeof(OpusDecoder));
st->celt_dec_offset = st->silk_dec_offset+silkDecSizeBytes;
silk_dec = (char*)st+st->silk_dec_offset;
celt_dec = (CELTDecoder*)((char*)st+st->celt_dec_offset);
st->stream_channels = st->channels = channels;
st->Fs = Fs;
st->DecControl.API_sampleRate = st->Fs;
st->DecControl.nChannelsAPI = st->channels;
/* Reset decoder */
ret = silk_InitDecoder( silk_dec );
if(ret)return OPUS_INTERNAL_ERROR;
/* Initialize CELT decoder */
ret = celt_decoder_init(celt_dec, Fs, channels);
if(ret!=OPUS_OK)return OPUS_INTERNAL_ERROR;
celt_decoder_ctl(celt_dec, CELT_SET_SIGNALLING(0));
st->prev_mode = 0;
st->frame_size = Fs/400;
return OPUS_OK;
}
OpusDecoder *opus_decoder_create(opus_int32 Fs, int channels, int *error)
{
int ret;
OpusDecoder *st;
if ((Fs!=48000&&Fs!=24000&&Fs!=16000&&Fs!=12000&&Fs!=8000)
|| (channels!=1&&channels!=2))
{
if (error)
*error = OPUS_BAD_ARG;
return NULL;
}
st = (OpusDecoder *)opus_alloc(opus_decoder_get_size(channels));
if (st == NULL)
{
if (error)
*error = OPUS_ALLOC_FAIL;
return NULL;
}
ret = opus_decoder_init(st, Fs, channels);
if (error)
*error = ret;
if (ret != OPUS_OK)
{
opus_free(st);
st = NULL;
}
return st;
}
static void smooth_fade(const opus_val16 *in1, const opus_val16 *in2,
opus_val16 *out, int overlap, int channels,
const opus_val16 *window, opus_int32 Fs)
{
int i, c;
int inc = 48000/Fs;
for (c=0;c<channels;c++)
{
for (i=0;i<overlap;i++)
{
opus_val16 w = MULT16_16_Q15(window[i*inc], window[i*inc]);
out[i*channels+c] = SHR32(MAC16_16(MULT16_16(w,in2[i*channels+c]),
Q15ONE-w, in1[i*channels+c]), 15);
}
}
}
static int opus_packet_get_mode(const unsigned char *data)
{
int mode;
if (data[0]&0x80)
{
mode = MODE_CELT_ONLY;
} else if ((data[0]&0x60) == 0x60)
{
mode = MODE_HYBRID;
} else {
mode = MODE_SILK_ONLY;
}
return mode;
}
static int opus_decode_frame(OpusDecoder *st, const unsigned char *data,
opus_int32 len, opus_val16 *pcm, int frame_size, int decode_fec)
{
void *silk_dec;
CELTDecoder *celt_dec;
int i, silk_ret=0, celt_ret=0;
ec_dec dec;
opus_int32 silk_frame_size;
int pcm_silk_size;
VARDECL(opus_int16, pcm_silk);
int pcm_transition_silk_size;
VARDECL(opus_val16, pcm_transition_silk);
int pcm_transition_celt_size;
VARDECL(opus_val16, pcm_transition_celt);
opus_val16 *pcm_transition;
int redundant_audio_size;
VARDECL(opus_val16, redundant_audio);
int audiosize;
int mode;
int transition=0;
int start_band;
int redundancy=0;
int redundancy_bytes = 0;
int celt_to_silk=0;
int c;
int F2_5, F5, F10, F20;
const opus_val16 *window;
opus_uint32 redundant_rng = 0;
ALLOC_STACK;
silk_dec = (char*)st+st->silk_dec_offset;
celt_dec = (CELTDecoder*)((char*)st+st->celt_dec_offset);
F20 = st->Fs/50;
F10 = F20>>1;
F5 = F10>>1;
F2_5 = F5>>1;
if (frame_size < F2_5)
{
RESTORE_STACK;
return OPUS_BUFFER_TOO_SMALL;
}
/* Limit frame_size to avoid excessive stack allocations. */
frame_size = IMIN(frame_size, st->Fs/25*3);
/* Payloads of 1 (2 including ToC) or 0 trigger the PLC/DTX */
if (len<=1)
{
data = NULL;
/* In that case, don't conceal more than what the ToC says */
frame_size = IMIN(frame_size, st->frame_size);
}
if (data != NULL)
{
audiosize = st->frame_size;
mode = st->mode;
ec_dec_init(&dec,(unsigned char*)data,len);
} else {
audiosize = frame_size;
mode = st->prev_mode;
if (mode == 0)
{
/* If we haven't got any packet yet, all we can do is return zeros */
for (i=0;i<audiosize*st->channels;i++)
pcm[i] = 0;
RESTORE_STACK;
return audiosize;
}
/* Avoids trying to run the PLC on sizes other than 2.5 (CELT), 5 (CELT),
10, or 20 (e.g. 12.5 or 30 ms). */
if (audiosize > F20)
{
do {
int ret = opus_decode_frame(st, NULL, 0, pcm, IMIN(audiosize, F20), 0);
if (ret<0)
{
RESTORE_STACK;
return ret;
}
pcm += ret*st->channels;
audiosize -= ret;
} while (audiosize > 0);
RESTORE_STACK;
return frame_size;
} else if (audiosize < F20)
{
if (audiosize > F10)
audiosize = F10;
else if (mode != MODE_SILK_ONLY && audiosize > F5 && audiosize < F10)
audiosize = F5;
}
}
pcm_transition_silk_size = ALLOC_NONE;
pcm_transition_celt_size = ALLOC_NONE;
if (data!=NULL && st->prev_mode > 0 && (
(mode == MODE_CELT_ONLY && st->prev_mode != MODE_CELT_ONLY && !st->prev_redundancy)
|| (mode != MODE_CELT_ONLY && st->prev_mode == MODE_CELT_ONLY) )
)
{
transition = 1;
/* Decide where to allocate the stack memory for pcm_transition */
if (mode == MODE_CELT_ONLY)
pcm_transition_celt_size = F5*st->channels;
else
pcm_transition_silk_size = F5*st->channels;
}
ALLOC(pcm_transition_celt, pcm_transition_celt_size, opus_val16);
if (transition && mode == MODE_CELT_ONLY)
{
pcm_transition = pcm_transition_celt;
opus_decode_frame(st, NULL, 0, pcm_transition, IMIN(F5, audiosize), 0);
}
if (audiosize > frame_size)
{
/*fprintf(stderr, "PCM buffer too small: %d vs %d (mode = %d)\n", audiosize, frame_size, mode);*/
RESTORE_STACK;
return OPUS_BAD_ARG;
} else {
frame_size = audiosize;
}
/* Don't allocate any memory when in CELT-only mode */
pcm_silk_size = (mode != MODE_CELT_ONLY) ? IMAX(F10, frame_size)*st->channels : ALLOC_NONE;
ALLOC(pcm_silk, pcm_silk_size, opus_int16);
/* SILK processing */
if (mode != MODE_CELT_ONLY)
{
int lost_flag, decoded_samples;
opus_int16 *pcm_ptr = pcm_silk;
if (st->prev_mode==MODE_CELT_ONLY)
silk_InitDecoder( silk_dec );
/* The SILK PLC cannot produce frames of less than 10 ms */
st->DecControl.payloadSize_ms = IMAX(10, 1000 * audiosize / st->Fs);
if (data != NULL)
{
st->DecControl.nChannelsInternal = st->stream_channels;
if( mode == MODE_SILK_ONLY ) {
if( st->bandwidth == OPUS_BANDWIDTH_NARROWBAND ) {
st->DecControl.internalSampleRate = 8000;
} else if( st->bandwidth == OPUS_BANDWIDTH_MEDIUMBAND ) {
st->DecControl.internalSampleRate = 12000;
} else if( st->bandwidth == OPUS_BANDWIDTH_WIDEBAND ) {
st->DecControl.internalSampleRate = 16000;
} else {
st->DecControl.internalSampleRate = 16000;
silk_assert( 0 );
}
} else {
/* Hybrid mode */
st->DecControl.internalSampleRate = 16000;
}
}
lost_flag = data == NULL ? 1 : 2 * decode_fec;
decoded_samples = 0;
do {
/* Call SILK decoder */
int first_frame = decoded_samples == 0;
silk_ret = silk_Decode( silk_dec, &st->DecControl,
lost_flag, first_frame, &dec, pcm_ptr, &silk_frame_size );
if( silk_ret ) {
if (lost_flag) {
/* PLC failure should not be fatal */
silk_frame_size = frame_size;
for (i=0;i<frame_size*st->channels;i++)
pcm_ptr[i] = 0;
} else {
RESTORE_STACK;
return OPUS_INTERNAL_ERROR;
}
}
pcm_ptr += silk_frame_size * st->channels;
decoded_samples += silk_frame_size;
} while( decoded_samples < frame_size );
}
start_band = 0;
if (!decode_fec && mode != MODE_CELT_ONLY && data != NULL
&& ec_tell(&dec)+17+20*(st->mode == MODE_HYBRID) <= 8*len)
{
/* Check if we have a redundant 0-8 kHz band */
if (mode == MODE_HYBRID)
redundancy = ec_dec_bit_logp(&dec, 12);
else
redundancy = 1;
if (redundancy)
{
celt_to_silk = ec_dec_bit_logp(&dec, 1);
/* redundancy_bytes will be at least two, in the non-hybrid
case due to the ec_tell() check above */
redundancy_bytes = mode==MODE_HYBRID ?
(opus_int32)ec_dec_uint(&dec, 256)+2 :
len-((ec_tell(&dec)+7)>>3);
len -= redundancy_bytes;
/* This is a sanity check. It should never happen for a valid
packet, so the exact behaviour is not normative. */
if (len*8 < ec_tell(&dec))
{
len = 0;
redundancy_bytes = 0;
redundancy = 0;
}
/* Shrink decoder because of raw bits */
dec.storage -= redundancy_bytes;
}
}
if (mode != MODE_CELT_ONLY)
start_band = 17;
{
int endband=21;
switch(st->bandwidth)
{
case OPUS_BANDWIDTH_NARROWBAND:
endband = 13;
break;
case OPUS_BANDWIDTH_MEDIUMBAND:
case OPUS_BANDWIDTH_WIDEBAND:
endband = 17;
break;
case OPUS_BANDWIDTH_SUPERWIDEBAND:
endband = 19;
break;
case OPUS_BANDWIDTH_FULLBAND:
endband = 21;
break;
}
celt_decoder_ctl(celt_dec, CELT_SET_END_BAND(endband));
celt_decoder_ctl(celt_dec, CELT_SET_CHANNELS(st->stream_channels));
}
if (redundancy)
{
transition = 0;
pcm_transition_silk_size=ALLOC_NONE;
}
ALLOC(pcm_transition_silk, pcm_transition_silk_size, opus_val16);
if (transition && mode != MODE_CELT_ONLY)
{
pcm_transition = pcm_transition_silk;
opus_decode_frame(st, NULL, 0, pcm_transition, IMIN(F5, audiosize), 0);
}
/* Only allocation memory for redundancy if/when needed */
redundant_audio_size = redundancy ? F5*st->channels : ALLOC_NONE;
ALLOC(redundant_audio, redundant_audio_size, opus_val16);
/* 5 ms redundant frame for CELT->SILK*/
if (redundancy && celt_to_silk)
{
celt_decoder_ctl(celt_dec, CELT_SET_START_BAND(0));
celt_decode_with_ec(celt_dec, data+len, redundancy_bytes,
redundant_audio, F5, NULL);
celt_decoder_ctl(celt_dec, OPUS_GET_FINAL_RANGE(&redundant_rng));
}
/* MUST be after PLC */
celt_decoder_ctl(celt_dec, CELT_SET_START_BAND(start_band));
if (mode != MODE_SILK_ONLY)
{
int celt_frame_size = IMIN(F20, frame_size);
/* Make sure to discard any previous CELT state */
if (mode != st->prev_mode && st->prev_mode > 0 && !st->prev_redundancy)
celt_decoder_ctl(celt_dec, OPUS_RESET_STATE);
/* Decode CELT */
celt_ret = celt_decode_with_ec(celt_dec, decode_fec ? NULL : data,
len, pcm, celt_frame_size, &dec);
} else {
unsigned char silence[2] = {0xFF, 0xFF};
for (i=0;i<frame_size*st->channels;i++)
pcm[i] = 0;
/* For hybrid -> SILK transitions, we let the CELT MDCT
do a fade-out by decoding a silence frame */
if (st->prev_mode == MODE_HYBRID && !(redundancy && celt_to_silk && st->prev_redundancy) )
{
celt_decoder_ctl(celt_dec, CELT_SET_START_BAND(0));
celt_decode_with_ec(celt_dec, silence, 2, pcm, F2_5, NULL);
}
}
if (mode != MODE_CELT_ONLY)
{
#ifdef FIXED_POINT
for (i=0;i<frame_size*st->channels;i++)
pcm[i] = SAT16(pcm[i] + pcm_silk[i]);
#else
for (i=0;i<frame_size*st->channels;i++)
pcm[i] = pcm[i] + (opus_val16)((1.f/32768.f)*pcm_silk[i]);
#endif
}
{
const CELTMode *celt_mode;
celt_decoder_ctl(celt_dec, CELT_GET_MODE(&celt_mode));
window = celt_mode->window;
}
/* 5 ms redundant frame for SILK->CELT */
if (redundancy && !celt_to_silk)
{
celt_decoder_ctl(celt_dec, OPUS_RESET_STATE);
celt_decoder_ctl(celt_dec, CELT_SET_START_BAND(0));
celt_decode_with_ec(celt_dec, data+len, redundancy_bytes, redundant_audio, F5, NULL);
celt_decoder_ctl(celt_dec, OPUS_GET_FINAL_RANGE(&redundant_rng));
smooth_fade(pcm+st->channels*(frame_size-F2_5), redundant_audio+st->channels*F2_5,
pcm+st->channels*(frame_size-F2_5), F2_5, st->channels, window, st->Fs);
}
if (redundancy && celt_to_silk)
{
for (c=0;c<st->channels;c++)
{
for (i=0;i<F2_5;i++)
pcm[st->channels*i+c] = redundant_audio[st->channels*i+c];
}
smooth_fade(redundant_audio+st->channels*F2_5, pcm+st->channels*F2_5,
pcm+st->channels*F2_5, F2_5, st->channels, window, st->Fs);
}
if (transition)
{
if (audiosize >= F5)
{
for (i=0;i<st->channels*F2_5;i++)
pcm[i] = pcm_transition[i];
smooth_fade(pcm_transition+st->channels*F2_5, pcm+st->channels*F2_5,
pcm+st->channels*F2_5, F2_5,
st->channels, window, st->Fs);
} else {
/* Not enough time to do a clean transition, but we do it anyway
This will not preserve amplitude perfectly and may introduce
a bit of temporal aliasing, but it shouldn't be too bad and
that's pretty much the best we can do. In any case, generating this
transition it pretty silly in the first place */
smooth_fade(pcm_transition, pcm,
pcm, F2_5,
st->channels, window, st->Fs);
}
}
if(st->decode_gain)
{
opus_val32 gain;
gain = celt_exp2(MULT16_16_P15(QCONST16(6.48814081e-4f, 25), st->decode_gain));
for (i=0;i<frame_size*st->channels;i++)
{
opus_val32 x;
x = MULT16_32_P16(pcm[i],gain);
pcm[i] = SATURATE(x, 32767);
}
}
if (len <= 1)
st->rangeFinal = 0;
else
st->rangeFinal = dec.rng ^ redundant_rng;
st->prev_mode = mode;
st->prev_redundancy = redundancy && !celt_to_silk;
if (celt_ret>=0)
{
if (OPUS_CHECK_ARRAY(pcm, audiosize*st->channels))
OPUS_PRINT_INT(audiosize);
}
RESTORE_STACK;
return celt_ret < 0 ? celt_ret : audiosize;
}
int opus_decode_native(OpusDecoder *st, const unsigned char *data,
opus_int32 len, opus_val16 *pcm, int frame_size, int decode_fec,
int self_delimited, opus_int32 *packet_offset, int soft_clip)
{
int i, nb_samples;
int count, offset;
unsigned char toc;
int packet_frame_size, packet_bandwidth, packet_mode, packet_stream_channels;
/* 48 x 2.5 ms = 120 ms */
opus_int16 size[48];
if (decode_fec<0 || decode_fec>1)
return OPUS_BAD_ARG;
/* For FEC/PLC, frame_size has to be to have a multiple of 2.5 ms */
if ((decode_fec || len==0 || data==NULL) && frame_size%(st->Fs/400)!=0)
return OPUS_BAD_ARG;
if (len==0 || data==NULL)
{
int pcm_count=0;
do {
int ret;
ret = opus_decode_frame(st, NULL, 0, pcm+pcm_count*st->channels, frame_size-pcm_count, 0);
if (ret<0)
return ret;
pcm_count += ret;
} while (pcm_count < frame_size);
celt_assert(pcm_count == frame_size);
if (OPUS_CHECK_ARRAY(pcm, pcm_count*st->channels))
OPUS_PRINT_INT(pcm_count);
st->last_packet_duration = pcm_count;
return pcm_count;
} else if (len<0)
return OPUS_BAD_ARG;
packet_mode = opus_packet_get_mode(data);
packet_bandwidth = opus_packet_get_bandwidth(data);
packet_frame_size = opus_packet_get_samples_per_frame(data, st->Fs);
packet_stream_channels = opus_packet_get_nb_channels(data);
count = opus_packet_parse_impl(data, len, self_delimited, &toc, NULL,
size, &offset, packet_offset);
if (count<0)
return count;
data += offset;
if (decode_fec)
{
int duration_copy;
int ret;
/* If no FEC can be present, run the PLC (recursive call) */
if (frame_size < packet_frame_size || packet_mode == MODE_CELT_ONLY || st->mode == MODE_CELT_ONLY)
return opus_decode_native(st, NULL, 0, pcm, frame_size, 0, 0, NULL, soft_clip);
/* Otherwise, run the PLC on everything except the size for which we might have FEC */
duration_copy = st->last_packet_duration;
if (frame_size-packet_frame_size!=0)
{
ret = opus_decode_native(st, NULL, 0, pcm, frame_size-packet_frame_size, 0, 0, NULL, soft_clip);
if (ret<0)
{
st->last_packet_duration = duration_copy;
return ret;
}
celt_assert(ret==frame_size-packet_frame_size);
}
/* Complete with FEC */
st->mode = packet_mode;
st->bandwidth = packet_bandwidth;
st->frame_size = packet_frame_size;
st->stream_channels = packet_stream_channels;
ret = opus_decode_frame(st, data, size[0], pcm+st->channels*(frame_size-packet_frame_size),
packet_frame_size, 1);
if (ret<0)
return ret;
else {
if (OPUS_CHECK_ARRAY(pcm, frame_size*st->channels))
OPUS_PRINT_INT(frame_size);
st->last_packet_duration = frame_size;
return frame_size;
}
}
if (count*packet_frame_size > frame_size)
return OPUS_BUFFER_TOO_SMALL;
/* Update the state as the last step to avoid updating it on an invalid packet */
st->mode = packet_mode;
st->bandwidth = packet_bandwidth;
st->frame_size = packet_frame_size;
st->stream_channels = packet_stream_channels;
nb_samples=0;
for (i=0;i<count;i++)
{
int ret;
ret = opus_decode_frame(st, data, size[i], pcm+nb_samples*st->channels, frame_size-nb_samples, 0);
if (ret<0)
return ret;
celt_assert(ret==packet_frame_size);
data += size[i];
nb_samples += ret;
}
st->last_packet_duration = nb_samples;
if (OPUS_CHECK_ARRAY(pcm, nb_samples*st->channels))
OPUS_PRINT_INT(nb_samples);
#ifndef FIXED_POINT
if (soft_clip)
opus_pcm_soft_clip(pcm, nb_samples, st->channels, st->softclip_mem);
else
st->softclip_mem[0]=st->softclip_mem[1]=0;
#endif
return nb_samples;
}
#ifdef FIXED_POINT
int opus_decode(OpusDecoder *st, const unsigned char *data,
opus_int32 len, opus_val16 *pcm, int frame_size, int decode_fec)
{
if(frame_size<=0)
return OPUS_BAD_ARG;
return opus_decode_native(st, data, len, pcm, frame_size, decode_fec, 0, NULL, 0);
}
#ifndef DISABLE_FLOAT_API
int opus_decode_float(OpusDecoder *st, const unsigned char *data,
opus_int32 len, float *pcm, int frame_size, int decode_fec)
{
VARDECL(opus_int16, out);
int ret, i;
ALLOC_STACK;
if(frame_size<=0)
{
RESTORE_STACK;
return OPUS_BAD_ARG;
}
ALLOC(out, frame_size*st->channels, opus_int16);
ret = opus_decode_native(st, data, len, out, frame_size, decode_fec, 0, NULL, 0);
if (ret > 0)
{
for (i=0;i<ret*st->channels;i++)
pcm[i] = (1.f/32768.f)*(out[i]);
}
RESTORE_STACK;
return ret;
}
#endif
#else
int opus_decode(OpusDecoder *st, const unsigned char *data,
opus_int32 len, opus_int16 *pcm, int frame_size, int decode_fec)
{
VARDECL(float, out);
int ret, i;
ALLOC_STACK;
if(frame_size<=0)
{
RESTORE_STACK;
return OPUS_BAD_ARG;
}
ALLOC(out, frame_size*st->channels, float);
ret = opus_decode_native(st, data, len, out, frame_size, decode_fec, 0, NULL, 1);
if (ret > 0)
{
for (i=0;i<ret*st->channels;i++)
pcm[i] = FLOAT2INT16(out[i]);
}
RESTORE_STACK;
return ret;
}
int opus_decode_float(OpusDecoder *st, const unsigned char *data,
opus_int32 len, opus_val16 *pcm, int frame_size, int decode_fec)
{
if(frame_size<=0)
return OPUS_BAD_ARG;
return opus_decode_native(st, data, len, pcm, frame_size, decode_fec, 0, NULL, 0);
}
#endif
int opus_decoder_ctl(OpusDecoder *st, int request, ...)
{
int ret = OPUS_OK;
va_list ap;
void *silk_dec;
CELTDecoder *celt_dec;
silk_dec = (char*)st+st->silk_dec_offset;
celt_dec = (CELTDecoder*)((char*)st+st->celt_dec_offset);
va_start(ap, request);
switch (request)
{
case OPUS_GET_BANDWIDTH_REQUEST:
{
opus_int32 *value = va_arg(ap, opus_int32*);
if (!value)
{
goto bad_arg;
}
*value = st->bandwidth;
}
break;
case OPUS_GET_FINAL_RANGE_REQUEST:
{
opus_uint32 *value = va_arg(ap, opus_uint32*);
if (!value)
{
goto bad_arg;
}
*value = st->rangeFinal;
}
break;
case OPUS_RESET_STATE:
{
OPUS_CLEAR((char*)&st->OPUS_DECODER_RESET_START,
sizeof(OpusDecoder)-
((char*)&st->OPUS_DECODER_RESET_START - (char*)st));
celt_decoder_ctl(celt_dec, OPUS_RESET_STATE);
silk_InitDecoder( silk_dec );
st->stream_channels = st->channels;
st->frame_size = st->Fs/400;
}
break;
case OPUS_GET_SAMPLE_RATE_REQUEST:
{
opus_int32 *value = va_arg(ap, opus_int32*);
if (!value)
{
goto bad_arg;
}
*value = st->Fs;
}
break;
case OPUS_GET_PITCH_REQUEST:
{
opus_int32 *value = va_arg(ap, opus_int32*);
if (!value)
{
goto bad_arg;
}
if (st->prev_mode == MODE_CELT_ONLY)
celt_decoder_ctl(celt_dec, OPUS_GET_PITCH(value));
else
*value = st->DecControl.prevPitchLag;
}
break;
case OPUS_GET_GAIN_REQUEST:
{
opus_int32 *value = va_arg(ap, opus_int32*);
if (!value)
{
goto bad_arg;
}
*value = st->decode_gain;
}
break;
case OPUS_SET_GAIN_REQUEST:
{
opus_int32 value = va_arg(ap, opus_int32);
if (value<-32768 || value>32767)
{
goto bad_arg;
}
st->decode_gain = value;
}
break;
case OPUS_GET_LAST_PACKET_DURATION_REQUEST:
{
opus_uint32 *value = va_arg(ap, opus_uint32*);
if (!value)
{
goto bad_arg;
}
*value = st->last_packet_duration;
}
break;
default:
/*fprintf(stderr, "unknown opus_decoder_ctl() request: %d", request);*/
ret = OPUS_UNIMPLEMENTED;
break;
}
va_end(ap);
return ret;
bad_arg:
va_end(ap);
return OPUS_BAD_ARG;
}
void opus_decoder_destroy(OpusDecoder *st)
{
opus_free(st);
}
int opus_packet_get_bandwidth(const unsigned char *data)
{
int bandwidth;
if (data[0]&0x80)
{
bandwidth = OPUS_BANDWIDTH_MEDIUMBAND + ((data[0]>>5)&0x3);
if (bandwidth == OPUS_BANDWIDTH_MEDIUMBAND)
bandwidth = OPUS_BANDWIDTH_NARROWBAND;
} else if ((data[0]&0x60) == 0x60)
{
bandwidth = (data[0]&0x10) ? OPUS_BANDWIDTH_FULLBAND :
OPUS_BANDWIDTH_SUPERWIDEBAND;
} else {
bandwidth = OPUS_BANDWIDTH_NARROWBAND + ((data[0]>>5)&0x3);
}
return bandwidth;
}
int opus_packet_get_samples_per_frame(const unsigned char *data,
opus_int32 Fs)
{
int audiosize;
if (data[0]&0x80)
{
audiosize = ((data[0]>>3)&0x3);
audiosize = (Fs<<audiosize)/400;
} else if ((data[0]&0x60) == 0x60)
{
audiosize = (data[0]&0x08) ? Fs/50 : Fs/100;
} else {
audiosize = ((data[0]>>3)&0x3);
if (audiosize == 3)
audiosize = Fs*60/1000;
else
audiosize = (Fs<<audiosize)/100;
}
return audiosize;
}
int opus_packet_get_nb_channels(const unsigned char *data)
{
return (data[0]&0x4) ? 2 : 1;
}
int opus_packet_get_nb_frames(const unsigned char packet[], opus_int32 len)
{
int count;
if (len<1)
return OPUS_BAD_ARG;
count = packet[0]&0x3;
if (count==0)
return 1;
else if (count!=3)
return 2;
else if (len<2)
return OPUS_INVALID_PACKET;
else
return packet[1]&0x3F;
}
int opus_packet_get_nb_samples(const unsigned char packet[], opus_int32 len,
opus_int32 Fs)
{
int samples;
int count = opus_packet_get_nb_frames(packet, len);
if (count<0)
return count;
samples = count*opus_packet_get_samples_per_frame(packet, Fs);
/* Can't have more than 120 ms */
if (samples*25 > Fs*3)
return OPUS_INVALID_PACKET;
else
return samples;
}
int opus_decoder_get_nb_samples(const OpusDecoder *dec,
const unsigned char packet[], opus_int32 len)
{
return opus_packet_get_nb_samples(packet, len, dec->Fs);
}

726
src/engine/external/opus/opus_defines.h vendored Normal file
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@ -0,0 +1,726 @@
/* Copyright (c) 2010-2011 Xiph.Org Foundation, Skype Limited
Written by Jean-Marc Valin and Koen Vos */
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/**
* @file opus_defines.h
* @brief Opus reference implementation constants
*/
#ifndef OPUS_DEFINES_H
#define OPUS_DEFINES_H
#include "opus_types.h"
#ifdef __cplusplus
extern "C" {
#endif
/** @defgroup opus_errorcodes Error codes
* @{
*/
/** No error @hideinitializer*/
#define OPUS_OK 0
/** One or more invalid/out of range arguments @hideinitializer*/
#define OPUS_BAD_ARG -1
/** The mode struct passed is invalid @hideinitializer*/
#define OPUS_BUFFER_TOO_SMALL -2
/** An internal error was detected @hideinitializer*/
#define OPUS_INTERNAL_ERROR -3
/** The compressed data passed is corrupted @hideinitializer*/
#define OPUS_INVALID_PACKET -4
/** Invalid/unsupported request number @hideinitializer*/
#define OPUS_UNIMPLEMENTED -5
/** An encoder or decoder structure is invalid or already freed @hideinitializer*/
#define OPUS_INVALID_STATE -6
/** Memory allocation has failed @hideinitializer*/
#define OPUS_ALLOC_FAIL -7
/**@}*/
/** @cond OPUS_INTERNAL_DOC */
/**Export control for opus functions */
#ifndef OPUS_EXPORT
# if defined(WIN32)
# ifdef OPUS_BUILD
# define OPUS_EXPORT __declspec(dllexport)
# else
# define OPUS_EXPORT
# endif
# elif defined(__GNUC__) && defined(OPUS_BUILD)
# define OPUS_EXPORT __attribute__ ((visibility ("default")))
# else
# define OPUS_EXPORT
# endif
#endif
# if !defined(OPUS_GNUC_PREREQ)
# if defined(__GNUC__)&&defined(__GNUC_MINOR__)
# define OPUS_GNUC_PREREQ(_maj,_min) \
((__GNUC__<<16)+__GNUC_MINOR__>=((_maj)<<16)+(_min))
# else
# define OPUS_GNUC_PREREQ(_maj,_min) 0
# endif
# endif
#if (!defined(__STDC_VERSION__) || (__STDC_VERSION__ < 199901L) )
# if OPUS_GNUC_PREREQ(3,0)
# define OPUS_RESTRICT __restrict__
# elif (defined(_MSC_VER) && _MSC_VER >= 1400)
# define OPUS_RESTRICT __restrict
# else
# define OPUS_RESTRICT
# endif
#else
# define OPUS_RESTRICT restrict
#endif
#if (!defined(__STDC_VERSION__) || (__STDC_VERSION__ < 199901L) )
# if OPUS_GNUC_PREREQ(2,7)
# define OPUS_INLINE __inline__
# elif (defined(_MSC_VER))
# define OPUS_INLINE __inline
# else
# define OPUS_INLINE
# endif
#else
# define OPUS_INLINE inline
#endif
/**Warning attributes for opus functions
* NONNULL is not used in OPUS_BUILD to avoid the compiler optimizing out
* some paranoid null checks. */
#if defined(__GNUC__) && OPUS_GNUC_PREREQ(3, 4)
# define OPUS_WARN_UNUSED_RESULT __attribute__ ((__warn_unused_result__))
#else
# define OPUS_WARN_UNUSED_RESULT
#endif
#if !defined(OPUS_BUILD) && defined(__GNUC__) && OPUS_GNUC_PREREQ(3, 4)
# define OPUS_ARG_NONNULL(_x) __attribute__ ((__nonnull__(_x)))
#else
# define OPUS_ARG_NONNULL(_x)
#endif
/** These are the actual Encoder CTL ID numbers.
* They should not be used directly by applications.
* In general, SETs should be even and GETs should be odd.*/
#define OPUS_SET_APPLICATION_REQUEST 4000
#define OPUS_GET_APPLICATION_REQUEST 4001
#define OPUS_SET_BITRATE_REQUEST 4002
#define OPUS_GET_BITRATE_REQUEST 4003
#define OPUS_SET_MAX_BANDWIDTH_REQUEST 4004
#define OPUS_GET_MAX_BANDWIDTH_REQUEST 4005
#define OPUS_SET_VBR_REQUEST 4006
#define OPUS_GET_VBR_REQUEST 4007
#define OPUS_SET_BANDWIDTH_REQUEST 4008
#define OPUS_GET_BANDWIDTH_REQUEST 4009
#define OPUS_SET_COMPLEXITY_REQUEST 4010
#define OPUS_GET_COMPLEXITY_REQUEST 4011
#define OPUS_SET_INBAND_FEC_REQUEST 4012
#define OPUS_GET_INBAND_FEC_REQUEST 4013
#define OPUS_SET_PACKET_LOSS_PERC_REQUEST 4014
#define OPUS_GET_PACKET_LOSS_PERC_REQUEST 4015
#define OPUS_SET_DTX_REQUEST 4016
#define OPUS_GET_DTX_REQUEST 4017
#define OPUS_SET_VBR_CONSTRAINT_REQUEST 4020
#define OPUS_GET_VBR_CONSTRAINT_REQUEST 4021
#define OPUS_SET_FORCE_CHANNELS_REQUEST 4022
#define OPUS_GET_FORCE_CHANNELS_REQUEST 4023
#define OPUS_SET_SIGNAL_REQUEST 4024
#define OPUS_GET_SIGNAL_REQUEST 4025
#define OPUS_GET_LOOKAHEAD_REQUEST 4027
/* #define OPUS_RESET_STATE 4028 */
#define OPUS_GET_SAMPLE_RATE_REQUEST 4029
#define OPUS_GET_FINAL_RANGE_REQUEST 4031
#define OPUS_GET_PITCH_REQUEST 4033
#define OPUS_SET_GAIN_REQUEST 4034
#define OPUS_GET_GAIN_REQUEST 4045 /* Should have been 4035 */
#define OPUS_SET_LSB_DEPTH_REQUEST 4036
#define OPUS_GET_LSB_DEPTH_REQUEST 4037
#define OPUS_GET_LAST_PACKET_DURATION_REQUEST 4039
#define OPUS_SET_EXPERT_FRAME_DURATION_REQUEST 4040
#define OPUS_GET_EXPERT_FRAME_DURATION_REQUEST 4041
#define OPUS_SET_PREDICTION_DISABLED_REQUEST 4042
#define OPUS_GET_PREDICTION_DISABLED_REQUEST 4043
/* Don't use 4045, it's already taken by OPUS_GET_GAIN_REQUEST */
/* Macros to trigger compilation errors when the wrong types are provided to a CTL */
#define __opus_check_int(x) (((void)((x) == (opus_int32)0)), (opus_int32)(x))
#define __opus_check_int_ptr(ptr) ((ptr) + ((ptr) - (opus_int32*)(ptr)))
#define __opus_check_uint_ptr(ptr) ((ptr) + ((ptr) - (opus_uint32*)(ptr)))
#define __opus_check_val16_ptr(ptr) ((ptr) + ((ptr) - (opus_val16*)(ptr)))
/** @endcond */
/** @defgroup opus_ctlvalues Pre-defined values for CTL interface
* @see opus_genericctls, opus_encoderctls
* @{
*/
/* Values for the various encoder CTLs */
#define OPUS_AUTO -1000 /**<Auto/default setting @hideinitializer*/
#define OPUS_BITRATE_MAX -1 /**<Maximum bitrate @hideinitializer*/
/** Best for most VoIP/videoconference applications where listening quality and intelligibility matter most
* @hideinitializer */
#define OPUS_APPLICATION_VOIP 2048
/** Best for broadcast/high-fidelity application where the decoded audio should be as close as possible to the input
* @hideinitializer */
#define OPUS_APPLICATION_AUDIO 2049
/** Only use when lowest-achievable latency is what matters most. Voice-optimized modes cannot be used.
* @hideinitializer */
#define OPUS_APPLICATION_RESTRICTED_LOWDELAY 2051
#define OPUS_SIGNAL_VOICE 3001 /**< Signal being encoded is voice */
#define OPUS_SIGNAL_MUSIC 3002 /**< Signal being encoded is music */
#define OPUS_BANDWIDTH_NARROWBAND 1101 /**< 4 kHz bandpass @hideinitializer*/
#define OPUS_BANDWIDTH_MEDIUMBAND 1102 /**< 6 kHz bandpass @hideinitializer*/
#define OPUS_BANDWIDTH_WIDEBAND 1103 /**< 8 kHz bandpass @hideinitializer*/
#define OPUS_BANDWIDTH_SUPERWIDEBAND 1104 /**<12 kHz bandpass @hideinitializer*/
#define OPUS_BANDWIDTH_FULLBAND 1105 /**<20 kHz bandpass @hideinitializer*/
#define OPUS_FRAMESIZE_ARG 5000 /**< Select frame size from the argument (default) */
#define OPUS_FRAMESIZE_2_5_MS 5001 /**< Use 2.5 ms frames */
#define OPUS_FRAMESIZE_5_MS 5002 /**< Use 5 ms frames */
#define OPUS_FRAMESIZE_10_MS 5003 /**< Use 10 ms frames */
#define OPUS_FRAMESIZE_20_MS 5004 /**< Use 20 ms frames */
#define OPUS_FRAMESIZE_40_MS 5005 /**< Use 40 ms frames */
#define OPUS_FRAMESIZE_60_MS 5006 /**< Use 60 ms frames */
/**@}*/
/** @defgroup opus_encoderctls Encoder related CTLs
*
* These are convenience macros for use with the \c opus_encode_ctl
* interface. They are used to generate the appropriate series of
* arguments for that call, passing the correct type, size and so
* on as expected for each particular request.
*
* Some usage examples:
*
* @code
* int ret;
* ret = opus_encoder_ctl(enc_ctx, OPUS_SET_BANDWIDTH(OPUS_AUTO));
* if (ret != OPUS_OK) return ret;
*
* opus_int32 rate;
* opus_encoder_ctl(enc_ctx, OPUS_GET_BANDWIDTH(&rate));
*
* opus_encoder_ctl(enc_ctx, OPUS_RESET_STATE);
* @endcode
*
* @see opus_genericctls, opus_encoder
* @{
*/
/** Configures the encoder's computational complexity.
* The supported range is 0-10 inclusive with 10 representing the highest complexity.
* @see OPUS_GET_COMPLEXITY
* @param[in] x <tt>opus_int32</tt>: Allowed values: 0-10, inclusive.
*
* @hideinitializer */
#define OPUS_SET_COMPLEXITY(x) OPUS_SET_COMPLEXITY_REQUEST, __opus_check_int(x)
/** Gets the encoder's complexity configuration.
* @see OPUS_SET_COMPLEXITY
* @param[out] x <tt>opus_int32 *</tt>: Returns a value in the range 0-10,
* inclusive.
* @hideinitializer */
#define OPUS_GET_COMPLEXITY(x) OPUS_GET_COMPLEXITY_REQUEST, __opus_check_int_ptr(x)
/** Configures the bitrate in the encoder.
* Rates from 500 to 512000 bits per second are meaningful, as well as the
* special values #OPUS_AUTO and #OPUS_BITRATE_MAX.
* The value #OPUS_BITRATE_MAX can be used to cause the codec to use as much
* rate as it can, which is useful for controlling the rate by adjusting the
* output buffer size.
* @see OPUS_GET_BITRATE
* @param[in] x <tt>opus_int32</tt>: Bitrate in bits per second. The default
* is determined based on the number of
* channels and the input sampling rate.
* @hideinitializer */
#define OPUS_SET_BITRATE(x) OPUS_SET_BITRATE_REQUEST, __opus_check_int(x)
/** Gets the encoder's bitrate configuration.
* @see OPUS_SET_BITRATE
* @param[out] x <tt>opus_int32 *</tt>: Returns the bitrate in bits per second.
* The default is determined based on the
* number of channels and the input
* sampling rate.
* @hideinitializer */
#define OPUS_GET_BITRATE(x) OPUS_GET_BITRATE_REQUEST, __opus_check_int_ptr(x)
/** Enables or disables variable bitrate (VBR) in the encoder.
* The configured bitrate may not be met exactly because frames must
* be an integer number of bytes in length.
* @warning Only the MDCT mode of Opus can provide hard CBR behavior.
* @see OPUS_GET_VBR
* @see OPUS_SET_VBR_CONSTRAINT
* @param[in] x <tt>opus_int32</tt>: Allowed values:
* <dl>
* <dt>0</dt><dd>Hard CBR. For LPC/hybrid modes at very low bit-rate, this can
* cause noticeable quality degradation.</dd>
* <dt>1</dt><dd>VBR (default). The exact type of VBR is controlled by
* #OPUS_SET_VBR_CONSTRAINT.</dd>
* </dl>
* @hideinitializer */
#define OPUS_SET_VBR(x) OPUS_SET_VBR_REQUEST, __opus_check_int(x)
/** Determine if variable bitrate (VBR) is enabled in the encoder.
* @see OPUS_SET_VBR
* @see OPUS_GET_VBR_CONSTRAINT
* @param[out] x <tt>opus_int32 *</tt>: Returns one of the following values:
* <dl>
* <dt>0</dt><dd>Hard CBR.</dd>
* <dt>1</dt><dd>VBR (default). The exact type of VBR may be retrieved via
* #OPUS_GET_VBR_CONSTRAINT.</dd>
* </dl>
* @hideinitializer */
#define OPUS_GET_VBR(x) OPUS_GET_VBR_REQUEST, __opus_check_int_ptr(x)
/** Enables or disables constrained VBR in the encoder.
* This setting is ignored when the encoder is in CBR mode.
* @warning Only the MDCT mode of Opus currently heeds the constraint.
* Speech mode ignores it completely, hybrid mode may fail to obey it
* if the LPC layer uses more bitrate than the constraint would have
* permitted.
* @see OPUS_GET_VBR_CONSTRAINT
* @see OPUS_SET_VBR
* @param[in] x <tt>opus_int32</tt>: Allowed values:
* <dl>
* <dt>0</dt><dd>Unconstrained VBR.</dd>
* <dt>1</dt><dd>Constrained VBR (default). This creates a maximum of one
* frame of buffering delay assuming a transport with a
* serialization speed of the nominal bitrate.</dd>
* </dl>
* @hideinitializer */
#define OPUS_SET_VBR_CONSTRAINT(x) OPUS_SET_VBR_CONSTRAINT_REQUEST, __opus_check_int(x)
/** Determine if constrained VBR is enabled in the encoder.
* @see OPUS_SET_VBR_CONSTRAINT
* @see OPUS_GET_VBR
* @param[out] x <tt>opus_int32 *</tt>: Returns one of the following values:
* <dl>
* <dt>0</dt><dd>Unconstrained VBR.</dd>
* <dt>1</dt><dd>Constrained VBR (default).</dd>
* </dl>
* @hideinitializer */
#define OPUS_GET_VBR_CONSTRAINT(x) OPUS_GET_VBR_CONSTRAINT_REQUEST, __opus_check_int_ptr(x)
/** Configures mono/stereo forcing in the encoder.
* This can force the encoder to produce packets encoded as either mono or
* stereo, regardless of the format of the input audio. This is useful when
* the caller knows that the input signal is currently a mono source embedded
* in a stereo stream.
* @see OPUS_GET_FORCE_CHANNELS
* @param[in] x <tt>opus_int32</tt>: Allowed values:
* <dl>
* <dt>#OPUS_AUTO</dt><dd>Not forced (default)</dd>
* <dt>1</dt> <dd>Forced mono</dd>
* <dt>2</dt> <dd>Forced stereo</dd>
* </dl>
* @hideinitializer */
#define OPUS_SET_FORCE_CHANNELS(x) OPUS_SET_FORCE_CHANNELS_REQUEST, __opus_check_int(x)
/** Gets the encoder's forced channel configuration.
* @see OPUS_SET_FORCE_CHANNELS
* @param[out] x <tt>opus_int32 *</tt>:
* <dl>
* <dt>#OPUS_AUTO</dt><dd>Not forced (default)</dd>
* <dt>1</dt> <dd>Forced mono</dd>
* <dt>2</dt> <dd>Forced stereo</dd>
* </dl>
* @hideinitializer */
#define OPUS_GET_FORCE_CHANNELS(x) OPUS_GET_FORCE_CHANNELS_REQUEST, __opus_check_int_ptr(x)
/** Configures the maximum bandpass that the encoder will select automatically.
* Applications should normally use this instead of #OPUS_SET_BANDWIDTH
* (leaving that set to the default, #OPUS_AUTO). This allows the
* application to set an upper bound based on the type of input it is
* providing, but still gives the encoder the freedom to reduce the bandpass
* when the bitrate becomes too low, for better overall quality.
* @see OPUS_GET_MAX_BANDWIDTH
* @param[in] x <tt>opus_int32</tt>: Allowed values:
* <dl>
* <dt>OPUS_BANDWIDTH_NARROWBAND</dt> <dd>4 kHz passband</dd>
* <dt>OPUS_BANDWIDTH_MEDIUMBAND</dt> <dd>6 kHz passband</dd>
* <dt>OPUS_BANDWIDTH_WIDEBAND</dt> <dd>8 kHz passband</dd>
* <dt>OPUS_BANDWIDTH_SUPERWIDEBAND</dt><dd>12 kHz passband</dd>
* <dt>OPUS_BANDWIDTH_FULLBAND</dt> <dd>20 kHz passband (default)</dd>
* </dl>
* @hideinitializer */
#define OPUS_SET_MAX_BANDWIDTH(x) OPUS_SET_MAX_BANDWIDTH_REQUEST, __opus_check_int(x)
/** Gets the encoder's configured maximum allowed bandpass.
* @see OPUS_SET_MAX_BANDWIDTH
* @param[out] x <tt>opus_int32 *</tt>: Allowed values:
* <dl>
* <dt>#OPUS_BANDWIDTH_NARROWBAND</dt> <dd>4 kHz passband</dd>
* <dt>#OPUS_BANDWIDTH_MEDIUMBAND</dt> <dd>6 kHz passband</dd>
* <dt>#OPUS_BANDWIDTH_WIDEBAND</dt> <dd>8 kHz passband</dd>
* <dt>#OPUS_BANDWIDTH_SUPERWIDEBAND</dt><dd>12 kHz passband</dd>
* <dt>#OPUS_BANDWIDTH_FULLBAND</dt> <dd>20 kHz passband (default)</dd>
* </dl>
* @hideinitializer */
#define OPUS_GET_MAX_BANDWIDTH(x) OPUS_GET_MAX_BANDWIDTH_REQUEST, __opus_check_int_ptr(x)
/** Sets the encoder's bandpass to a specific value.
* This prevents the encoder from automatically selecting the bandpass based
* on the available bitrate. If an application knows the bandpass of the input
* audio it is providing, it should normally use #OPUS_SET_MAX_BANDWIDTH
* instead, which still gives the encoder the freedom to reduce the bandpass
* when the bitrate becomes too low, for better overall quality.
* @see OPUS_GET_BANDWIDTH
* @param[in] x <tt>opus_int32</tt>: Allowed values:
* <dl>
* <dt>#OPUS_AUTO</dt> <dd>(default)</dd>
* <dt>#OPUS_BANDWIDTH_NARROWBAND</dt> <dd>4 kHz passband</dd>
* <dt>#OPUS_BANDWIDTH_MEDIUMBAND</dt> <dd>6 kHz passband</dd>
* <dt>#OPUS_BANDWIDTH_WIDEBAND</dt> <dd>8 kHz passband</dd>
* <dt>#OPUS_BANDWIDTH_SUPERWIDEBAND</dt><dd>12 kHz passband</dd>
* <dt>#OPUS_BANDWIDTH_FULLBAND</dt> <dd>20 kHz passband</dd>
* </dl>
* @hideinitializer */
#define OPUS_SET_BANDWIDTH(x) OPUS_SET_BANDWIDTH_REQUEST, __opus_check_int(x)
/** Configures the type of signal being encoded.
* This is a hint which helps the encoder's mode selection.
* @see OPUS_GET_SIGNAL
* @param[in] x <tt>opus_int32</tt>: Allowed values:
* <dl>
* <dt>#OPUS_AUTO</dt> <dd>(default)</dd>
* <dt>#OPUS_SIGNAL_VOICE</dt><dd>Bias thresholds towards choosing LPC or Hybrid modes.</dd>
* <dt>#OPUS_SIGNAL_MUSIC</dt><dd>Bias thresholds towards choosing MDCT modes.</dd>
* </dl>
* @hideinitializer */
#define OPUS_SET_SIGNAL(x) OPUS_SET_SIGNAL_REQUEST, __opus_check_int(x)
/** Gets the encoder's configured signal type.
* @see OPUS_SET_SIGNAL
* @param[out] x <tt>opus_int32 *</tt>: Returns one of the following values:
* <dl>
* <dt>#OPUS_AUTO</dt> <dd>(default)</dd>
* <dt>#OPUS_SIGNAL_VOICE</dt><dd>Bias thresholds towards choosing LPC or Hybrid modes.</dd>
* <dt>#OPUS_SIGNAL_MUSIC</dt><dd>Bias thresholds towards choosing MDCT modes.</dd>
* </dl>
* @hideinitializer */
#define OPUS_GET_SIGNAL(x) OPUS_GET_SIGNAL_REQUEST, __opus_check_int_ptr(x)
/** Configures the encoder's intended application.
* The initial value is a mandatory argument to the encoder_create function.
* @see OPUS_GET_APPLICATION
* @param[in] x <tt>opus_int32</tt>: Returns one of the following values:
* <dl>
* <dt>#OPUS_APPLICATION_VOIP</dt>
* <dd>Process signal for improved speech intelligibility.</dd>
* <dt>#OPUS_APPLICATION_AUDIO</dt>
* <dd>Favor faithfulness to the original input.</dd>
* <dt>#OPUS_APPLICATION_RESTRICTED_LOWDELAY</dt>
* <dd>Configure the minimum possible coding delay by disabling certain modes
* of operation.</dd>
* </dl>
* @hideinitializer */
#define OPUS_SET_APPLICATION(x) OPUS_SET_APPLICATION_REQUEST, __opus_check_int(x)
/** Gets the encoder's configured application.
* @see OPUS_SET_APPLICATION
* @param[out] x <tt>opus_int32 *</tt>: Returns one of the following values:
* <dl>
* <dt>#OPUS_APPLICATION_VOIP</dt>
* <dd>Process signal for improved speech intelligibility.</dd>
* <dt>#OPUS_APPLICATION_AUDIO</dt>
* <dd>Favor faithfulness to the original input.</dd>
* <dt>#OPUS_APPLICATION_RESTRICTED_LOWDELAY</dt>
* <dd>Configure the minimum possible coding delay by disabling certain modes
* of operation.</dd>
* </dl>
* @hideinitializer */
#define OPUS_GET_APPLICATION(x) OPUS_GET_APPLICATION_REQUEST, __opus_check_int_ptr(x)
/** Gets the sampling rate the encoder or decoder was initialized with.
* This simply returns the <code>Fs</code> value passed to opus_encoder_init()
* or opus_decoder_init().
* @param[out] x <tt>opus_int32 *</tt>: Sampling rate of encoder or decoder.
* @hideinitializer
*/
#define OPUS_GET_SAMPLE_RATE(x) OPUS_GET_SAMPLE_RATE_REQUEST, __opus_check_int_ptr(x)
/** Gets the total samples of delay added by the entire codec.
* This can be queried by the encoder and then the provided number of samples can be
* skipped on from the start of the decoder's output to provide time aligned input
* and output. From the perspective of a decoding application the real data begins this many
* samples late.
*
* The decoder contribution to this delay is identical for all decoders, but the
* encoder portion of the delay may vary from implementation to implementation,
* version to version, or even depend on the encoder's initial configuration.
* Applications needing delay compensation should call this CTL rather than
* hard-coding a value.
* @param[out] x <tt>opus_int32 *</tt>: Number of lookahead samples
* @hideinitializer */
#define OPUS_GET_LOOKAHEAD(x) OPUS_GET_LOOKAHEAD_REQUEST, __opus_check_int_ptr(x)
/** Configures the encoder's use of inband forward error correction (FEC).
* @note This is only applicable to the LPC layer
* @see OPUS_GET_INBAND_FEC
* @param[in] x <tt>opus_int32</tt>: Allowed values:
* <dl>
* <dt>0</dt><dd>Disable inband FEC (default).</dd>
* <dt>1</dt><dd>Enable inband FEC.</dd>
* </dl>
* @hideinitializer */
#define OPUS_SET_INBAND_FEC(x) OPUS_SET_INBAND_FEC_REQUEST, __opus_check_int(x)
/** Gets encoder's configured use of inband forward error correction.
* @see OPUS_SET_INBAND_FEC
* @param[out] x <tt>opus_int32 *</tt>: Returns one of the following values:
* <dl>
* <dt>0</dt><dd>Inband FEC disabled (default).</dd>
* <dt>1</dt><dd>Inband FEC enabled.</dd>
* </dl>
* @hideinitializer */
#define OPUS_GET_INBAND_FEC(x) OPUS_GET_INBAND_FEC_REQUEST, __opus_check_int_ptr(x)
/** Configures the encoder's expected packet loss percentage.
* Higher values with trigger progressively more loss resistant behavior in the encoder
* at the expense of quality at a given bitrate in the lossless case, but greater quality
* under loss.
* @see OPUS_GET_PACKET_LOSS_PERC
* @param[in] x <tt>opus_int32</tt>: Loss percentage in the range 0-100, inclusive (default: 0).
* @hideinitializer */
#define OPUS_SET_PACKET_LOSS_PERC(x) OPUS_SET_PACKET_LOSS_PERC_REQUEST, __opus_check_int(x)
/** Gets the encoder's configured packet loss percentage.
* @see OPUS_SET_PACKET_LOSS_PERC
* @param[out] x <tt>opus_int32 *</tt>: Returns the configured loss percentage
* in the range 0-100, inclusive (default: 0).
* @hideinitializer */
#define OPUS_GET_PACKET_LOSS_PERC(x) OPUS_GET_PACKET_LOSS_PERC_REQUEST, __opus_check_int_ptr(x)
/** Configures the encoder's use of discontinuous transmission (DTX).
* @note This is only applicable to the LPC layer
* @see OPUS_GET_DTX
* @param[in] x <tt>opus_int32</tt>: Allowed values:
* <dl>
* <dt>0</dt><dd>Disable DTX (default).</dd>
* <dt>1</dt><dd>Enabled DTX.</dd>
* </dl>
* @hideinitializer */
#define OPUS_SET_DTX(x) OPUS_SET_DTX_REQUEST, __opus_check_int(x)
/** Gets encoder's configured use of discontinuous transmission.
* @see OPUS_SET_DTX
* @param[out] x <tt>opus_int32 *</tt>: Returns one of the following values:
* <dl>
* <dt>0</dt><dd>DTX disabled (default).</dd>
* <dt>1</dt><dd>DTX enabled.</dd>
* </dl>
* @hideinitializer */
#define OPUS_GET_DTX(x) OPUS_GET_DTX_REQUEST, __opus_check_int_ptr(x)
/** Configures the depth of signal being encoded.
* This is a hint which helps the encoder identify silence and near-silence.
* @see OPUS_GET_LSB_DEPTH
* @param[in] x <tt>opus_int32</tt>: Input precision in bits, between 8 and 24
* (default: 24).
* @hideinitializer */
#define OPUS_SET_LSB_DEPTH(x) OPUS_SET_LSB_DEPTH_REQUEST, __opus_check_int(x)
/** Gets the encoder's configured signal depth.
* @see OPUS_SET_LSB_DEPTH
* @param[out] x <tt>opus_int32 *</tt>: Input precision in bits, between 8 and
* 24 (default: 24).
* @hideinitializer */
#define OPUS_GET_LSB_DEPTH(x) OPUS_GET_LSB_DEPTH_REQUEST, __opus_check_int_ptr(x)
/** Gets the duration (in samples) of the last packet successfully decoded or concealed.
* @param[out] x <tt>opus_int32 *</tt>: Number of samples (at current sampling rate).
* @hideinitializer */
#define OPUS_GET_LAST_PACKET_DURATION(x) OPUS_GET_LAST_PACKET_DURATION_REQUEST, __opus_check_int_ptr(x)
/** Configures the encoder's use of variable duration frames.
* When variable duration is enabled, the encoder is free to use a shorter frame
* size than the one requested in the opus_encode*() call.
* It is then the user's responsibility
* to verify how much audio was encoded by checking the ToC byte of the encoded
* packet. The part of the audio that was not encoded needs to be resent to the
* encoder for the next call. Do not use this option unless you <b>really</b>
* know what you are doing.
* @see OPUS_GET_EXPERT_VARIABLE_DURATION
* @param[in] x <tt>opus_int32</tt>: Allowed values:
* <dl>
* <dt>OPUS_FRAMESIZE_ARG</dt><dd>Select frame size from the argument (default).</dd>
* <dt>OPUS_FRAMESIZE_2_5_MS</dt><dd>Use 2.5 ms frames.</dd>
* <dt>OPUS_FRAMESIZE_5_MS</dt><dd>Use 2.5 ms frames.</dd>
* <dt>OPUS_FRAMESIZE_10_MS</dt><dd>Use 10 ms frames.</dd>
* <dt>OPUS_FRAMESIZE_20_MS</dt><dd>Use 20 ms frames.</dd>
* <dt>OPUS_FRAMESIZE_40_MS</dt><dd>Use 40 ms frames.</dd>
* <dt>OPUS_FRAMESIZE_60_MS</dt><dd>Use 60 ms frames.</dd>
* <dt>OPUS_FRAMESIZE_VARIABLE</dt><dd>Optimize the frame size dynamically.</dd>
* </dl>
* @hideinitializer */
#define OPUS_SET_EXPERT_FRAME_DURATION(x) OPUS_SET_EXPERT_FRAME_DURATION_REQUEST, __opus_check_int(x)
/** Gets the encoder's configured use of variable duration frames.
* @see OPUS_SET_EXPERT_VARIABLE_DURATION
* @param[out] x <tt>opus_int32 *</tt>: Returns one of the following values:
* <dl>
* <dt>OPUS_FRAMESIZE_ARG</dt><dd>Select frame size from the argument (default).</dd>
* <dt>OPUS_FRAMESIZE_2_5_MS</dt><dd>Use 2.5 ms frames.</dd>
* <dt>OPUS_FRAMESIZE_5_MS</dt><dd>Use 2.5 ms frames.</dd>
* <dt>OPUS_FRAMESIZE_10_MS</dt><dd>Use 10 ms frames.</dd>
* <dt>OPUS_FRAMESIZE_20_MS</dt><dd>Use 20 ms frames.</dd>
* <dt>OPUS_FRAMESIZE_40_MS</dt><dd>Use 40 ms frames.</dd>
* <dt>OPUS_FRAMESIZE_60_MS</dt><dd>Use 60 ms frames.</dd>
* <dt>OPUS_FRAMESIZE_VARIABLE</dt><dd>Optimize the frame size dynamically.</dd>
* </dl>
* @hideinitializer */
#define OPUS_GET_EXPERT_FRAME_DURATION(x) OPUS_GET_EXPERT_FRAME_DURATION_REQUEST, __opus_check_int_ptr(x)
/** If set to 1, disables almost all use of prediction, making frames almost
completely independent. This reduces quality. (default : 0)
* @hideinitializer */
#define OPUS_SET_PREDICTION_DISABLED(x) OPUS_SET_PREDICTION_DISABLED_REQUEST, __opus_check_int(x)
/** Gets the encoder's configured prediction status.
* @hideinitializer */
#define OPUS_GET_PREDICTION_DISABLED(x) OPUS_GET_PREDICTION_DISABLED_REQUEST, __opus_check_int_ptr(x)
/**@}*/
/** @defgroup opus_genericctls Generic CTLs
*
* These macros are used with the \c opus_decoder_ctl and
* \c opus_encoder_ctl calls to generate a particular
* request.
*
* When called on an \c OpusDecoder they apply to that
* particular decoder instance. When called on an
* \c OpusEncoder they apply to the corresponding setting
* on that encoder instance, if present.
*
* Some usage examples:
*
* @code
* int ret;
* opus_int32 pitch;
* ret = opus_decoder_ctl(dec_ctx, OPUS_GET_PITCH(&pitch));
* if (ret == OPUS_OK) return ret;
*
* opus_encoder_ctl(enc_ctx, OPUS_RESET_STATE);
* opus_decoder_ctl(dec_ctx, OPUS_RESET_STATE);
*
* opus_int32 enc_bw, dec_bw;
* opus_encoder_ctl(enc_ctx, OPUS_GET_BANDWIDTH(&enc_bw));
* opus_decoder_ctl(dec_ctx, OPUS_GET_BANDWIDTH(&dec_bw));
* if (enc_bw != dec_bw) {
* printf("packet bandwidth mismatch!\n");
* }
* @endcode
*
* @see opus_encoder, opus_decoder_ctl, opus_encoder_ctl, opus_decoderctls, opus_encoderctls
* @{
*/
/** Resets the codec state to be equivalent to a freshly initialized state.
* This should be called when switching streams in order to prevent
* the back to back decoding from giving different results from
* one at a time decoding.
* @hideinitializer */
#define OPUS_RESET_STATE 4028
/** Gets the final state of the codec's entropy coder.
* This is used for testing purposes,
* The encoder and decoder state should be identical after coding a payload
* (assuming no data corruption or software bugs)
*
* @param[out] x <tt>opus_uint32 *</tt>: Entropy coder state
*
* @hideinitializer */
#define OPUS_GET_FINAL_RANGE(x) OPUS_GET_FINAL_RANGE_REQUEST, __opus_check_uint_ptr(x)
/** Gets the pitch of the last decoded frame, if available.
* This can be used for any post-processing algorithm requiring the use of pitch,
* e.g. time stretching/shortening. If the last frame was not voiced, or if the
* pitch was not coded in the frame, then zero is returned.
*
* This CTL is only implemented for decoder instances.
*
* @param[out] x <tt>opus_int32 *</tt>: pitch period at 48 kHz (or 0 if not available)
*
* @hideinitializer */
#define OPUS_GET_PITCH(x) OPUS_GET_PITCH_REQUEST, __opus_check_int_ptr(x)
/** Gets the encoder's configured bandpass or the decoder's last bandpass.
* @see OPUS_SET_BANDWIDTH
* @param[out] x <tt>opus_int32 *</tt>: Returns one of the following values:
* <dl>
* <dt>#OPUS_AUTO</dt> <dd>(default)</dd>
* <dt>#OPUS_BANDWIDTH_NARROWBAND</dt> <dd>4 kHz passband</dd>
* <dt>#OPUS_BANDWIDTH_MEDIUMBAND</dt> <dd>6 kHz passband</dd>
* <dt>#OPUS_BANDWIDTH_WIDEBAND</dt> <dd>8 kHz passband</dd>
* <dt>#OPUS_BANDWIDTH_SUPERWIDEBAND</dt><dd>12 kHz passband</dd>
* <dt>#OPUS_BANDWIDTH_FULLBAND</dt> <dd>20 kHz passband</dd>
* </dl>
* @hideinitializer */
#define OPUS_GET_BANDWIDTH(x) OPUS_GET_BANDWIDTH_REQUEST, __opus_check_int_ptr(x)
/**@}*/
/** @defgroup opus_decoderctls Decoder related CTLs
* @see opus_genericctls, opus_encoderctls, opus_decoder
* @{
*/
/** Configures decoder gain adjustment.
* Scales the decoded output by a factor specified in Q8 dB units.
* This has a maximum range of -32768 to 32767 inclusive, and returns
* OPUS_BAD_ARG otherwise. The default is zero indicating no adjustment.
* This setting survives decoder reset.
*
* gain = pow(10, x/(20.0*256))
*
* @param[in] x <tt>opus_int32</tt>: Amount to scale PCM signal by in Q8 dB units.
* @hideinitializer */
#define OPUS_SET_GAIN(x) OPUS_SET_GAIN_REQUEST, __opus_check_int(x)
/** Gets the decoder's configured gain adjustment. @see OPUS_SET_GAIN
*
* @param[out] x <tt>opus_int32 *</tt>: Amount to scale PCM signal by in Q8 dB units.
* @hideinitializer */
#define OPUS_GET_GAIN(x) OPUS_GET_GAIN_REQUEST, __opus_check_int_ptr(x)
/**@}*/
/** @defgroup opus_libinfo Opus library information functions
* @{
*/
/** Converts an opus error code into a human readable string.
*
* @param[in] error <tt>int</tt>: Error number
* @returns Error string
*/
OPUS_EXPORT const char *opus_strerror(int error);
/** Gets the libopus version string.
*
* @returns Version string
*/
OPUS_EXPORT const char *opus_get_version_string(void);
/**@}*/
#ifdef __cplusplus
}
#endif
#endif /* OPUS_DEFINES_H */

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/* Copyright (c) 2011 Xiph.Org Foundation
Written by Jean-Marc Valin */
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "opus_multistream.h"
#include "opus.h"
#include "opus_private.h"
#include "stack_alloc.h"
#include <stdarg.h>
#include "float_cast.h"
#include "os_support.h"
int validate_layout(const ChannelLayout *layout)
{
int i, max_channel;
max_channel = layout->nb_streams+layout->nb_coupled_streams;
if (max_channel>255)
return 0;
for (i=0;i<layout->nb_channels;i++)
{
if (layout->mapping[i] >= max_channel && layout->mapping[i] != 255)
return 0;
}
return 1;
}
int get_left_channel(const ChannelLayout *layout, int stream_id, int prev)
{
int i;
i = (prev<0) ? 0 : prev+1;
for (;i<layout->nb_channels;i++)
{
if (layout->mapping[i]==stream_id*2)
return i;
}
return -1;
}
int get_right_channel(const ChannelLayout *layout, int stream_id, int prev)
{
int i;
i = (prev<0) ? 0 : prev+1;
for (;i<layout->nb_channels;i++)
{
if (layout->mapping[i]==stream_id*2+1)
return i;
}
return -1;
}
int get_mono_channel(const ChannelLayout *layout, int stream_id, int prev)
{
int i;
i = (prev<0) ? 0 : prev+1;
for (;i<layout->nb_channels;i++)
{
if (layout->mapping[i]==stream_id+layout->nb_coupled_streams)
return i;
}
return -1;
}

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/* Copyright (c) 2011 Xiph.Org Foundation
Written by Jean-Marc Valin */
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/**
* @file opus_multistream.h
* @brief Opus reference implementation multistream API
*/
#ifndef OPUS_MULTISTREAM_H
#define OPUS_MULTISTREAM_H
#include "opus.h"
#ifdef __cplusplus
extern "C" {
#endif
/** @cond OPUS_INTERNAL_DOC */
/** Macros to trigger compilation errors when the wrong types are provided to a
* CTL. */
/**@{*/
#define __opus_check_encstate_ptr(ptr) ((ptr) + ((ptr) - (OpusEncoder**)(ptr)))
#define __opus_check_decstate_ptr(ptr) ((ptr) + ((ptr) - (OpusDecoder**)(ptr)))
/**@}*/
/** These are the actual encoder and decoder CTL ID numbers.
* They should not be used directly by applications.
* In general, SETs should be even and GETs should be odd.*/
/**@{*/
#define OPUS_MULTISTREAM_GET_ENCODER_STATE_REQUEST 5120
#define OPUS_MULTISTREAM_GET_DECODER_STATE_REQUEST 5122
/**@}*/
/** @endcond */
/** @defgroup opus_multistream_ctls Multistream specific encoder and decoder CTLs
*
* These are convenience macros that are specific to the
* opus_multistream_encoder_ctl() and opus_multistream_decoder_ctl()
* interface.
* The CTLs from @ref opus_genericctls, @ref opus_encoderctls, and
* @ref opus_decoderctls may be applied to a multistream encoder or decoder as
* well.
* In addition, you may retrieve the encoder or decoder state for an specific
* stream via #OPUS_MULTISTREAM_GET_ENCODER_STATE or
* #OPUS_MULTISTREAM_GET_DECODER_STATE and apply CTLs to it individually.
*/
/**@{*/
/** Gets the encoder state for an individual stream of a multistream encoder.
* @param[in] x <tt>opus_int32</tt>: The index of the stream whose encoder you
* wish to retrieve.
* This must be non-negative and less than
* the <code>streams</code> parameter used
* to initialize the encoder.
* @param[out] y <tt>OpusEncoder**</tt>: Returns a pointer to the given
* encoder state.
* @retval OPUS_BAD_ARG The index of the requested stream was out of range.
* @hideinitializer
*/
#define OPUS_MULTISTREAM_GET_ENCODER_STATE(x,y) OPUS_MULTISTREAM_GET_ENCODER_STATE_REQUEST, __opus_check_int(x), __opus_check_encstate_ptr(y)
/** Gets the decoder state for an individual stream of a multistream decoder.
* @param[in] x <tt>opus_int32</tt>: The index of the stream whose decoder you
* wish to retrieve.
* This must be non-negative and less than
* the <code>streams</code> parameter used
* to initialize the decoder.
* @param[out] y <tt>OpusDecoder**</tt>: Returns a pointer to the given
* decoder state.
* @retval OPUS_BAD_ARG The index of the requested stream was out of range.
* @hideinitializer
*/
#define OPUS_MULTISTREAM_GET_DECODER_STATE(x,y) OPUS_MULTISTREAM_GET_DECODER_STATE_REQUEST, __opus_check_int(x), __opus_check_decstate_ptr(y)
/**@}*/
/** @defgroup opus_multistream Opus Multistream API
* @{
*
* The multistream API allows individual Opus streams to be combined into a
* single packet, enabling support for up to 255 channels. Unlike an
* elementary Opus stream, the encoder and decoder must negotiate the channel
* configuration before the decoder can successfully interpret the data in the
* packets produced by the encoder. Some basic information, such as packet
* duration, can be computed without any special negotiation.
*
* The format for multistream Opus packets is defined in the
* <a href="http://tools.ietf.org/html/draft-terriberry-oggopus">Ogg
* encapsulation specification</a> and is based on the self-delimited Opus
* framing described in Appendix B of <a href="http://tools.ietf.org/html/rfc6716">RFC 6716</a>.
* Normal Opus packets are just a degenerate case of multistream Opus packets,
* and can be encoded or decoded with the multistream API by setting
* <code>streams</code> to <code>1</code> when initializing the encoder or
* decoder.
*
* Multistream Opus streams can contain up to 255 elementary Opus streams.
* These may be either "uncoupled" or "coupled", indicating that the decoder
* is configured to decode them to either 1 or 2 channels, respectively.
* The streams are ordered so that all coupled streams appear at the
* beginning.
*
* A <code>mapping</code> table defines which decoded channel <code>i</code>
* should be used for each input/output (I/O) channel <code>j</code>. This table is
* typically provided as an unsigned char array.
* Let <code>i = mapping[j]</code> be the index for I/O channel <code>j</code>.
* If <code>i < 2*coupled_streams</code>, then I/O channel <code>j</code> is
* encoded as the left channel of stream <code>(i/2)</code> if <code>i</code>
* is even, or as the right channel of stream <code>(i/2)</code> if
* <code>i</code> is odd. Otherwise, I/O channel <code>j</code> is encoded as
* mono in stream <code>(i - coupled_streams)</code>, unless it has the special
* value 255, in which case it is omitted from the encoding entirely (the
* decoder will reproduce it as silence). Each value <code>i</code> must either
* be the special value 255 or be less than <code>streams + coupled_streams</code>.
*
* The output channels specified by the encoder
* should use the
* <a href="http://www.xiph.org/vorbis/doc/Vorbis_I_spec.html#x1-800004.3.9">Vorbis
* channel ordering</a>. A decoder may wish to apply an additional permutation
* to the mapping the encoder used to achieve a different output channel
* order (e.g. for outputing in WAV order).
*
* Each multistream packet contains an Opus packet for each stream, and all of
* the Opus packets in a single multistream packet must have the same
* duration. Therefore the duration of a multistream packet can be extracted
* from the TOC sequence of the first stream, which is located at the
* beginning of the packet, just like an elementary Opus stream:
*
* @code
* int nb_samples;
* int nb_frames;
* nb_frames = opus_packet_get_nb_frames(data, len);
* if (nb_frames < 1)
* return nb_frames;
* nb_samples = opus_packet_get_samples_per_frame(data, 48000) * nb_frames;
* @endcode
*
* The general encoding and decoding process proceeds exactly the same as in
* the normal @ref opus_encoder and @ref opus_decoder APIs.
* See their documentation for an overview of how to use the corresponding
* multistream functions.
*/
/** Opus multistream encoder state.
* This contains the complete state of a multistream Opus encoder.
* It is position independent and can be freely copied.
* @see opus_multistream_encoder_create
* @see opus_multistream_encoder_init
*/
typedef struct OpusMSEncoder OpusMSEncoder;
/** Opus multistream decoder state.
* This contains the complete state of a multistream Opus decoder.
* It is position independent and can be freely copied.
* @see opus_multistream_decoder_create
* @see opus_multistream_decoder_init
*/
typedef struct OpusMSDecoder OpusMSDecoder;
/**\name Multistream encoder functions */
/**@{*/
/** Gets the size of an OpusMSEncoder structure.
* @param streams <tt>int</tt>: The total number of streams to encode from the
* input.
* This must be no more than 255.
* @param coupled_streams <tt>int</tt>: Number of coupled (2 channel) streams
* to encode.
* This must be no larger than the total
* number of streams.
* Additionally, The total number of
* encoded channels (<code>streams +
* coupled_streams</code>) must be no
* more than 255.
* @returns The size in bytes on success, or a negative error code
* (see @ref opus_errorcodes) on error.
*/
OPUS_EXPORT OPUS_WARN_UNUSED_RESULT opus_int32 opus_multistream_encoder_get_size(
int streams,
int coupled_streams
);
OPUS_EXPORT OPUS_WARN_UNUSED_RESULT opus_int32 opus_multistream_surround_encoder_get_size(
int channels,
int mapping_family
);
/** Allocates and initializes a multistream encoder state.
* Call opus_multistream_encoder_destroy() to release
* this object when finished.
* @param Fs <tt>opus_int32</tt>: Sampling rate of the input signal (in Hz).
* This must be one of 8000, 12000, 16000,
* 24000, or 48000.
* @param channels <tt>int</tt>: Number of channels in the input signal.
* This must be at most 255.
* It may be greater than the number of
* coded channels (<code>streams +
* coupled_streams</code>).
* @param streams <tt>int</tt>: The total number of streams to encode from the
* input.
* This must be no more than the number of channels.
* @param coupled_streams <tt>int</tt>: Number of coupled (2 channel) streams
* to encode.
* This must be no larger than the total
* number of streams.
* Additionally, The total number of
* encoded channels (<code>streams +
* coupled_streams</code>) must be no
* more than the number of input channels.
* @param[in] mapping <code>const unsigned char[channels]</code>: Mapping from
* encoded channels to input channels, as described in
* @ref opus_multistream. As an extra constraint, the
* multistream encoder does not allow encoding coupled
* streams for which one channel is unused since this
* is never a good idea.
* @param application <tt>int</tt>: The target encoder application.
* This must be one of the following:
* <dl>
* <dt>#OPUS_APPLICATION_VOIP</dt>
* <dd>Process signal for improved speech intelligibility.</dd>
* <dt>#OPUS_APPLICATION_AUDIO</dt>
* <dd>Favor faithfulness to the original input.</dd>
* <dt>#OPUS_APPLICATION_RESTRICTED_LOWDELAY</dt>
* <dd>Configure the minimum possible coding delay by disabling certain modes
* of operation.</dd>
* </dl>
* @param[out] error <tt>int *</tt>: Returns #OPUS_OK on success, or an error
* code (see @ref opus_errorcodes) on
* failure.
*/
OPUS_EXPORT OPUS_WARN_UNUSED_RESULT OpusMSEncoder *opus_multistream_encoder_create(
opus_int32 Fs,
int channels,
int streams,
int coupled_streams,
const unsigned char *mapping,
int application,
int *error
) OPUS_ARG_NONNULL(5);
OPUS_EXPORT OPUS_WARN_UNUSED_RESULT OpusMSEncoder *opus_multistream_surround_encoder_create(
opus_int32 Fs,
int channels,
int mapping_family,
int *streams,
int *coupled_streams,
unsigned char *mapping,
int application,
int *error
) OPUS_ARG_NONNULL(5);
/** Initialize a previously allocated multistream encoder state.
* The memory pointed to by \a st must be at least the size returned by
* opus_multistream_encoder_get_size().
* This is intended for applications which use their own allocator instead of
* malloc.
* To reset a previously initialized state, use the #OPUS_RESET_STATE CTL.
* @see opus_multistream_encoder_create
* @see opus_multistream_encoder_get_size
* @param st <tt>OpusMSEncoder*</tt>: Multistream encoder state to initialize.
* @param Fs <tt>opus_int32</tt>: Sampling rate of the input signal (in Hz).
* This must be one of 8000, 12000, 16000,
* 24000, or 48000.
* @param channels <tt>int</tt>: Number of channels in the input signal.
* This must be at most 255.
* It may be greater than the number of
* coded channels (<code>streams +
* coupled_streams</code>).
* @param streams <tt>int</tt>: The total number of streams to encode from the
* input.
* This must be no more than the number of channels.
* @param coupled_streams <tt>int</tt>: Number of coupled (2 channel) streams
* to encode.
* This must be no larger than the total
* number of streams.
* Additionally, The total number of
* encoded channels (<code>streams +
* coupled_streams</code>) must be no
* more than the number of input channels.
* @param[in] mapping <code>const unsigned char[channels]</code>: Mapping from
* encoded channels to input channels, as described in
* @ref opus_multistream. As an extra constraint, the
* multistream encoder does not allow encoding coupled
* streams for which one channel is unused since this
* is never a good idea.
* @param application <tt>int</tt>: The target encoder application.
* This must be one of the following:
* <dl>
* <dt>#OPUS_APPLICATION_VOIP</dt>
* <dd>Process signal for improved speech intelligibility.</dd>
* <dt>#OPUS_APPLICATION_AUDIO</dt>
* <dd>Favor faithfulness to the original input.</dd>
* <dt>#OPUS_APPLICATION_RESTRICTED_LOWDELAY</dt>
* <dd>Configure the minimum possible coding delay by disabling certain modes
* of operation.</dd>
* </dl>
* @returns #OPUS_OK on success, or an error code (see @ref opus_errorcodes)
* on failure.
*/
OPUS_EXPORT int opus_multistream_encoder_init(
OpusMSEncoder *st,
opus_int32 Fs,
int channels,
int streams,
int coupled_streams,
const unsigned char *mapping,
int application
) OPUS_ARG_NONNULL(1) OPUS_ARG_NONNULL(6);
OPUS_EXPORT int opus_multistream_surround_encoder_init(
OpusMSEncoder *st,
opus_int32 Fs,
int channels,
int mapping_family,
int *streams,
int *coupled_streams,
unsigned char *mapping,
int application
) OPUS_ARG_NONNULL(1) OPUS_ARG_NONNULL(6);
/** Encodes a multistream Opus frame.
* @param st <tt>OpusMSEncoder*</tt>: Multistream encoder state.
* @param[in] pcm <tt>const opus_int16*</tt>: The input signal as interleaved
* samples.
* This must contain
* <code>frame_size*channels</code>
* samples.
* @param frame_size <tt>int</tt>: Number of samples per channel in the input
* signal.
* This must be an Opus frame size for the
* encoder's sampling rate.
* For example, at 48 kHz the permitted values
* are 120, 240, 480, 960, 1920, and 2880.
* Passing in a duration of less than 10 ms
* (480 samples at 48 kHz) will prevent the
* encoder from using the LPC or hybrid modes.
* @param[out] data <tt>unsigned char*</tt>: Output payload.
* This must contain storage for at
* least \a max_data_bytes.
* @param [in] max_data_bytes <tt>opus_int32</tt>: Size of the allocated
* memory for the output
* payload. This may be
* used to impose an upper limit on
* the instant bitrate, but should
* not be used as the only bitrate
* control. Use #OPUS_SET_BITRATE to
* control the bitrate.
* @returns The length of the encoded packet (in bytes) on success or a
* negative error code (see @ref opus_errorcodes) on failure.
*/
OPUS_EXPORT OPUS_WARN_UNUSED_RESULT int opus_multistream_encode(
OpusMSEncoder *st,
const opus_int16 *pcm,
int frame_size,
unsigned char *data,
opus_int32 max_data_bytes
) OPUS_ARG_NONNULL(1) OPUS_ARG_NONNULL(2) OPUS_ARG_NONNULL(4);
/** Encodes a multistream Opus frame from floating point input.
* @param st <tt>OpusMSEncoder*</tt>: Multistream encoder state.
* @param[in] pcm <tt>const float*</tt>: The input signal as interleaved
* samples with a normal range of
* +/-1.0.
* Samples with a range beyond +/-1.0
* are supported but will be clipped by
* decoders using the integer API and
* should only be used if it is known
* that the far end supports extended
* dynamic range.
* This must contain
* <code>frame_size*channels</code>
* samples.
* @param frame_size <tt>int</tt>: Number of samples per channel in the input
* signal.
* This must be an Opus frame size for the
* encoder's sampling rate.
* For example, at 48 kHz the permitted values
* are 120, 240, 480, 960, 1920, and 2880.
* Passing in a duration of less than 10 ms
* (480 samples at 48 kHz) will prevent the
* encoder from using the LPC or hybrid modes.
* @param[out] data <tt>unsigned char*</tt>: Output payload.
* This must contain storage for at
* least \a max_data_bytes.
* @param [in] max_data_bytes <tt>opus_int32</tt>: Size of the allocated
* memory for the output
* payload. This may be
* used to impose an upper limit on
* the instant bitrate, but should
* not be used as the only bitrate
* control. Use #OPUS_SET_BITRATE to
* control the bitrate.
* @returns The length of the encoded packet (in bytes) on success or a
* negative error code (see @ref opus_errorcodes) on failure.
*/
OPUS_EXPORT OPUS_WARN_UNUSED_RESULT int opus_multistream_encode_float(
OpusMSEncoder *st,
const float *pcm,
int frame_size,
unsigned char *data,
opus_int32 max_data_bytes
) OPUS_ARG_NONNULL(1) OPUS_ARG_NONNULL(2) OPUS_ARG_NONNULL(4);
/** Frees an <code>OpusMSEncoder</code> allocated by
* opus_multistream_encoder_create().
* @param st <tt>OpusMSEncoder*</tt>: Multistream encoder state to be freed.
*/
OPUS_EXPORT void opus_multistream_encoder_destroy(OpusMSEncoder *st);
/** Perform a CTL function on a multistream Opus encoder.
*
* Generally the request and subsequent arguments are generated by a
* convenience macro.
* @param st <tt>OpusMSEncoder*</tt>: Multistream encoder state.
* @param request This and all remaining parameters should be replaced by one
* of the convenience macros in @ref opus_genericctls,
* @ref opus_encoderctls, or @ref opus_multistream_ctls.
* @see opus_genericctls
* @see opus_encoderctls
* @see opus_multistream_ctls
*/
OPUS_EXPORT int opus_multistream_encoder_ctl(OpusMSEncoder *st, int request, ...) OPUS_ARG_NONNULL(1);
/**@}*/
/**\name Multistream decoder functions */
/**@{*/
/** Gets the size of an <code>OpusMSDecoder</code> structure.
* @param streams <tt>int</tt>: The total number of streams coded in the
* input.
* This must be no more than 255.
* @param coupled_streams <tt>int</tt>: Number streams to decode as coupled
* (2 channel) streams.
* This must be no larger than the total
* number of streams.
* Additionally, The total number of
* coded channels (<code>streams +
* coupled_streams</code>) must be no
* more than 255.
* @returns The size in bytes on success, or a negative error code
* (see @ref opus_errorcodes) on error.
*/
OPUS_EXPORT OPUS_WARN_UNUSED_RESULT opus_int32 opus_multistream_decoder_get_size(
int streams,
int coupled_streams
);
/** Allocates and initializes a multistream decoder state.
* Call opus_multistream_decoder_destroy() to release
* this object when finished.
* @param Fs <tt>opus_int32</tt>: Sampling rate to decode at (in Hz).
* This must be one of 8000, 12000, 16000,
* 24000, or 48000.
* @param channels <tt>int</tt>: Number of channels to output.
* This must be at most 255.
* It may be different from the number of coded
* channels (<code>streams +
* coupled_streams</code>).
* @param streams <tt>int</tt>: The total number of streams coded in the
* input.
* This must be no more than 255.
* @param coupled_streams <tt>int</tt>: Number of streams to decode as coupled
* (2 channel) streams.
* This must be no larger than the total
* number of streams.
* Additionally, The total number of
* coded channels (<code>streams +
* coupled_streams</code>) must be no
* more than 255.
* @param[in] mapping <code>const unsigned char[channels]</code>: Mapping from
* coded channels to output channels, as described in
* @ref opus_multistream.
* @param[out] error <tt>int *</tt>: Returns #OPUS_OK on success, or an error
* code (see @ref opus_errorcodes) on
* failure.
*/
OPUS_EXPORT OPUS_WARN_UNUSED_RESULT OpusMSDecoder *opus_multistream_decoder_create(
opus_int32 Fs,
int channels,
int streams,
int coupled_streams,
const unsigned char *mapping,
int *error
) OPUS_ARG_NONNULL(5);
/** Intialize a previously allocated decoder state object.
* The memory pointed to by \a st must be at least the size returned by
* opus_multistream_encoder_get_size().
* This is intended for applications which use their own allocator instead of
* malloc.
* To reset a previously initialized state, use the #OPUS_RESET_STATE CTL.
* @see opus_multistream_decoder_create
* @see opus_multistream_deocder_get_size
* @param st <tt>OpusMSEncoder*</tt>: Multistream encoder state to initialize.
* @param Fs <tt>opus_int32</tt>: Sampling rate to decode at (in Hz).
* This must be one of 8000, 12000, 16000,
* 24000, or 48000.
* @param channels <tt>int</tt>: Number of channels to output.
* This must be at most 255.
* It may be different from the number of coded
* channels (<code>streams +
* coupled_streams</code>).
* @param streams <tt>int</tt>: The total number of streams coded in the
* input.
* This must be no more than 255.
* @param coupled_streams <tt>int</tt>: Number of streams to decode as coupled
* (2 channel) streams.
* This must be no larger than the total
* number of streams.
* Additionally, The total number of
* coded channels (<code>streams +
* coupled_streams</code>) must be no
* more than 255.
* @param[in] mapping <code>const unsigned char[channels]</code>: Mapping from
* coded channels to output channels, as described in
* @ref opus_multistream.
* @returns #OPUS_OK on success, or an error code (see @ref opus_errorcodes)
* on failure.
*/
OPUS_EXPORT int opus_multistream_decoder_init(
OpusMSDecoder *st,
opus_int32 Fs,
int channels,
int streams,
int coupled_streams,
const unsigned char *mapping
) OPUS_ARG_NONNULL(1) OPUS_ARG_NONNULL(6);
/** Decode a multistream Opus packet.
* @param st <tt>OpusMSDecoder*</tt>: Multistream decoder state.
* @param[in] data <tt>const unsigned char*</tt>: Input payload.
* Use a <code>NULL</code>
* pointer to indicate packet
* loss.
* @param len <tt>opus_int32</tt>: Number of bytes in payload.
* @param[out] pcm <tt>opus_int16*</tt>: Output signal, with interleaved
* samples.
* This must contain room for
* <code>frame_size*channels</code>
* samples.
* @param frame_size <tt>int</tt>: The number of samples per channel of
* available space in \a pcm.
* If this is less than the maximum packet duration
* (120 ms; 5760 for 48kHz), this function will not be capable
* of decoding some packets. In the case of PLC (data==NULL)
* or FEC (decode_fec=1), then frame_size needs to be exactly
* the duration of audio that is missing, otherwise the
* decoder will not be in the optimal state to decode the
* next incoming packet. For the PLC and FEC cases, frame_size
* <b>must</b> be a multiple of 2.5 ms.
* @param decode_fec <tt>int</tt>: Flag (0 or 1) to request that any in-band
* forward error correction data be decoded.
* If no such data is available, the frame is
* decoded as if it were lost.
* @returns Number of samples decoded on success or a negative error code
* (see @ref opus_errorcodes) on failure.
*/
OPUS_EXPORT OPUS_WARN_UNUSED_RESULT int opus_multistream_decode(
OpusMSDecoder *st,
const unsigned char *data,
opus_int32 len,
opus_int16 *pcm,
int frame_size,
int decode_fec
) OPUS_ARG_NONNULL(1) OPUS_ARG_NONNULL(4);
/** Decode a multistream Opus packet with floating point output.
* @param st <tt>OpusMSDecoder*</tt>: Multistream decoder state.
* @param[in] data <tt>const unsigned char*</tt>: Input payload.
* Use a <code>NULL</code>
* pointer to indicate packet
* loss.
* @param len <tt>opus_int32</tt>: Number of bytes in payload.
* @param[out] pcm <tt>opus_int16*</tt>: Output signal, with interleaved
* samples.
* This must contain room for
* <code>frame_size*channels</code>
* samples.
* @param frame_size <tt>int</tt>: The number of samples per channel of
* available space in \a pcm.
* If this is less than the maximum packet duration
* (120 ms; 5760 for 48kHz), this function will not be capable
* of decoding some packets. In the case of PLC (data==NULL)
* or FEC (decode_fec=1), then frame_size needs to be exactly
* the duration of audio that is missing, otherwise the
* decoder will not be in the optimal state to decode the
* next incoming packet. For the PLC and FEC cases, frame_size
* <b>must</b> be a multiple of 2.5 ms.
* @param decode_fec <tt>int</tt>: Flag (0 or 1) to request that any in-band
* forward error correction data be decoded.
* If no such data is available, the frame is
* decoded as if it were lost.
* @returns Number of samples decoded on success or a negative error code
* (see @ref opus_errorcodes) on failure.
*/
OPUS_EXPORT OPUS_WARN_UNUSED_RESULT int opus_multistream_decode_float(
OpusMSDecoder *st,
const unsigned char *data,
opus_int32 len,
float *pcm,
int frame_size,
int decode_fec
) OPUS_ARG_NONNULL(1) OPUS_ARG_NONNULL(4);
/** Perform a CTL function on a multistream Opus decoder.
*
* Generally the request and subsequent arguments are generated by a
* convenience macro.
* @param st <tt>OpusMSDecoder*</tt>: Multistream decoder state.
* @param request This and all remaining parameters should be replaced by one
* of the convenience macros in @ref opus_genericctls,
* @ref opus_decoderctls, or @ref opus_multistream_ctls.
* @see opus_genericctls
* @see opus_decoderctls
* @see opus_multistream_ctls
*/
OPUS_EXPORT int opus_multistream_decoder_ctl(OpusMSDecoder *st, int request, ...) OPUS_ARG_NONNULL(1);
/** Frees an <code>OpusMSDecoder</code> allocated by
* opus_multistream_decoder_create().
* @param st <tt>OpusMSDecoder</tt>: Multistream decoder state to be freed.
*/
OPUS_EXPORT void opus_multistream_decoder_destroy(OpusMSDecoder *st);
/**@}*/
/**@}*/
#ifdef __cplusplus
}
#endif
#endif /* OPUS_MULTISTREAM_H */

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/* Copyright (c) 2011 Xiph.Org Foundation
Written by Jean-Marc Valin */
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "opus_multistream.h"
#include "opus.h"
#include "opus_private.h"
#include "stack_alloc.h"
#include <stdarg.h>
#include "float_cast.h"
#include "os_support.h"
struct OpusMSDecoder {
ChannelLayout layout;
/* Decoder states go here */
};
/* DECODER */
opus_int32 opus_multistream_decoder_get_size(int nb_streams, int nb_coupled_streams)
{
int coupled_size;
int mono_size;
if(nb_streams<1||nb_coupled_streams>nb_streams||nb_coupled_streams<0)return 0;
coupled_size = opus_decoder_get_size(2);
mono_size = opus_decoder_get_size(1);
return align(sizeof(OpusMSDecoder))
+ nb_coupled_streams * align(coupled_size)
+ (nb_streams-nb_coupled_streams) * align(mono_size);
}
int opus_multistream_decoder_init(
OpusMSDecoder *st,
opus_int32 Fs,
int channels,
int streams,
int coupled_streams,
const unsigned char *mapping
)
{
int coupled_size;
int mono_size;
int i, ret;
char *ptr;
if ((channels>255) || (channels<1) || (coupled_streams>streams) ||
(coupled_streams+streams>255) || (streams<1) || (coupled_streams<0))
return OPUS_BAD_ARG;
st->layout.nb_channels = channels;
st->layout.nb_streams = streams;
st->layout.nb_coupled_streams = coupled_streams;
for (i=0;i<st->layout.nb_channels;i++)
st->layout.mapping[i] = mapping[i];
if (!validate_layout(&st->layout))
return OPUS_BAD_ARG;
ptr = (char*)st + align(sizeof(OpusMSDecoder));
coupled_size = opus_decoder_get_size(2);
mono_size = opus_decoder_get_size(1);
for (i=0;i<st->layout.nb_coupled_streams;i++)
{
ret=opus_decoder_init((OpusDecoder*)ptr, Fs, 2);
if(ret!=OPUS_OK)return ret;
ptr += align(coupled_size);
}
for (;i<st->layout.nb_streams;i++)
{
ret=opus_decoder_init((OpusDecoder*)ptr, Fs, 1);
if(ret!=OPUS_OK)return ret;
ptr += align(mono_size);
}
return OPUS_OK;
}
OpusMSDecoder *opus_multistream_decoder_create(
opus_int32 Fs,
int channels,
int streams,
int coupled_streams,
const unsigned char *mapping,
int *error
)
{
int ret;
OpusMSDecoder *st;
if ((channels>255) || (channels<1) || (coupled_streams>streams) ||
(coupled_streams+streams>255) || (streams<1) || (coupled_streams<0))
{
if (error)
*error = OPUS_BAD_ARG;
return NULL;
}
st = (OpusMSDecoder *)opus_alloc(opus_multistream_decoder_get_size(streams, coupled_streams));
if (st==NULL)
{
if (error)
*error = OPUS_ALLOC_FAIL;
return NULL;
}
ret = opus_multistream_decoder_init(st, Fs, channels, streams, coupled_streams, mapping);
if (error)
*error = ret;
if (ret != OPUS_OK)
{
opus_free(st);
st = NULL;
}
return st;
}
typedef void (*opus_copy_channel_out_func)(
void *dst,
int dst_stride,
int dst_channel,
const opus_val16 *src,
int src_stride,
int frame_size
);
static int opus_multistream_packet_validate(const unsigned char *data,
opus_int32 len, int nb_streams, opus_int32 Fs)
{
int s;
int count;
unsigned char toc;
opus_int16 size[48];
int samples=0;
opus_int32 packet_offset;
for (s=0;s<nb_streams;s++)
{
int tmp_samples;
if (len<=0)
return OPUS_INVALID_PACKET;
count = opus_packet_parse_impl(data, len, s!=nb_streams-1, &toc, NULL,
size, NULL, &packet_offset);
if (count<0)
return count;
tmp_samples = opus_packet_get_nb_samples(data, packet_offset, Fs);
if (s!=0 && samples != tmp_samples)
return OPUS_INVALID_PACKET;
samples = tmp_samples;
data += packet_offset;
len -= packet_offset;
}
return samples;
}
static int opus_multistream_decode_native(
OpusMSDecoder *st,
const unsigned char *data,
opus_int32 len,
void *pcm,
opus_copy_channel_out_func copy_channel_out,
int frame_size,
int decode_fec,
int soft_clip
)
{
opus_int32 Fs;
int coupled_size;
int mono_size;
int s, c;
char *ptr;
int do_plc=0;
VARDECL(opus_val16, buf);
ALLOC_STACK;
/* Limit frame_size to avoid excessive stack allocations. */
opus_multistream_decoder_ctl(st, OPUS_GET_SAMPLE_RATE(&Fs));
frame_size = IMIN(frame_size, Fs/25*3);
ALLOC(buf, 2*frame_size, opus_val16);
ptr = (char*)st + align(sizeof(OpusMSDecoder));
coupled_size = opus_decoder_get_size(2);
mono_size = opus_decoder_get_size(1);
if (len==0)
do_plc = 1;
if (len < 0)
{
RESTORE_STACK;
return OPUS_BAD_ARG;
}
if (!do_plc && len < 2*st->layout.nb_streams-1)
{
RESTORE_STACK;
return OPUS_INVALID_PACKET;
}
if (!do_plc)
{
int ret = opus_multistream_packet_validate(data, len, st->layout.nb_streams, Fs);
if (ret < 0)
{
RESTORE_STACK;
return ret;
} else if (ret > frame_size)
{
RESTORE_STACK;
return OPUS_BUFFER_TOO_SMALL;
}
}
for (s=0;s<st->layout.nb_streams;s++)
{
OpusDecoder *dec;
int packet_offset, ret;
dec = (OpusDecoder*)ptr;
ptr += (s < st->layout.nb_coupled_streams) ? align(coupled_size) : align(mono_size);
if (!do_plc && len<=0)
{
RESTORE_STACK;
return OPUS_INTERNAL_ERROR;
}
packet_offset = 0;
ret = opus_decode_native(dec, data, len, buf, frame_size, decode_fec, s!=st->layout.nb_streams-1, &packet_offset, soft_clip);
data += packet_offset;
len -= packet_offset;
if (ret <= 0)
{
RESTORE_STACK;
return ret;
}
frame_size = ret;
if (s < st->layout.nb_coupled_streams)
{
int chan, prev;
prev = -1;
/* Copy "left" audio to the channel(s) where it belongs */
while ( (chan = get_left_channel(&st->layout, s, prev)) != -1)
{
(*copy_channel_out)(pcm, st->layout.nb_channels, chan,
buf, 2, frame_size);
prev = chan;
}
prev = -1;
/* Copy "right" audio to the channel(s) where it belongs */
while ( (chan = get_right_channel(&st->layout, s, prev)) != -1)
{
(*copy_channel_out)(pcm, st->layout.nb_channels, chan,
buf+1, 2, frame_size);
prev = chan;
}
} else {
int chan, prev;
prev = -1;
/* Copy audio to the channel(s) where it belongs */
while ( (chan = get_mono_channel(&st->layout, s, prev)) != -1)
{
(*copy_channel_out)(pcm, st->layout.nb_channels, chan,
buf, 1, frame_size);
prev = chan;
}
}
}
/* Handle muted channels */
for (c=0;c<st->layout.nb_channels;c++)
{
if (st->layout.mapping[c] == 255)
{
(*copy_channel_out)(pcm, st->layout.nb_channels, c,
NULL, 0, frame_size);
}
}
RESTORE_STACK;
return frame_size;
}
#if !defined(DISABLE_FLOAT_API)
static void opus_copy_channel_out_float(
void *dst,
int dst_stride,
int dst_channel,
const opus_val16 *src,
int src_stride,
int frame_size
)
{
float *float_dst;
opus_int32 i;
float_dst = (float*)dst;
if (src != NULL)
{
for (i=0;i<frame_size;i++)
#if defined(FIXED_POINT)
float_dst[i*dst_stride+dst_channel] = (1/32768.f)*src[i*src_stride];
#else
float_dst[i*dst_stride+dst_channel] = src[i*src_stride];
#endif
}
else
{
for (i=0;i<frame_size;i++)
float_dst[i*dst_stride+dst_channel] = 0;
}
}
#endif
static void opus_copy_channel_out_short(
void *dst,
int dst_stride,
int dst_channel,
const opus_val16 *src,
int src_stride,
int frame_size
)
{
opus_int16 *short_dst;
opus_int32 i;
short_dst = (opus_int16*)dst;
if (src != NULL)
{
for (i=0;i<frame_size;i++)
#if defined(FIXED_POINT)
short_dst[i*dst_stride+dst_channel] = src[i*src_stride];
#else
short_dst[i*dst_stride+dst_channel] = FLOAT2INT16(src[i*src_stride]);
#endif
}
else
{
for (i=0;i<frame_size;i++)
short_dst[i*dst_stride+dst_channel] = 0;
}
}
#ifdef FIXED_POINT
int opus_multistream_decode(
OpusMSDecoder *st,
const unsigned char *data,
opus_int32 len,
opus_int16 *pcm,
int frame_size,
int decode_fec
)
{
return opus_multistream_decode_native(st, data, len,
pcm, opus_copy_channel_out_short, frame_size, decode_fec, 0);
}
#ifndef DISABLE_FLOAT_API
int opus_multistream_decode_float(OpusMSDecoder *st, const unsigned char *data,
opus_int32 len, float *pcm, int frame_size, int decode_fec)
{
return opus_multistream_decode_native(st, data, len,
pcm, opus_copy_channel_out_float, frame_size, decode_fec, 0);
}
#endif
#else
int opus_multistream_decode(OpusMSDecoder *st, const unsigned char *data,
opus_int32 len, opus_int16 *pcm, int frame_size, int decode_fec)
{
return opus_multistream_decode_native(st, data, len,
pcm, opus_copy_channel_out_short, frame_size, decode_fec, 1);
}
int opus_multistream_decode_float(
OpusMSDecoder *st,
const unsigned char *data,
opus_int32 len,
float *pcm,
int frame_size,
int decode_fec
)
{
return opus_multistream_decode_native(st, data, len,
pcm, opus_copy_channel_out_float, frame_size, decode_fec, 0);
}
#endif
int opus_multistream_decoder_ctl(OpusMSDecoder *st, int request, ...)
{
va_list ap;
int coupled_size, mono_size;
char *ptr;
int ret = OPUS_OK;
va_start(ap, request);
coupled_size = opus_decoder_get_size(2);
mono_size = opus_decoder_get_size(1);
ptr = (char*)st + align(sizeof(OpusMSDecoder));
switch (request)
{
case OPUS_GET_BANDWIDTH_REQUEST:
case OPUS_GET_SAMPLE_RATE_REQUEST:
case OPUS_GET_GAIN_REQUEST:
case OPUS_GET_LAST_PACKET_DURATION_REQUEST:
{
OpusDecoder *dec;
/* For int32* GET params, just query the first stream */
opus_int32 *value = va_arg(ap, opus_int32*);
dec = (OpusDecoder*)ptr;
ret = opus_decoder_ctl(dec, request, value);
}
break;
case OPUS_GET_FINAL_RANGE_REQUEST:
{
int s;
opus_uint32 *value = va_arg(ap, opus_uint32*);
opus_uint32 tmp;
if (!value)
{
goto bad_arg;
}
*value = 0;
for (s=0;s<st->layout.nb_streams;s++)
{
OpusDecoder *dec;
dec = (OpusDecoder*)ptr;
if (s < st->layout.nb_coupled_streams)
ptr += align(coupled_size);
else
ptr += align(mono_size);
ret = opus_decoder_ctl(dec, request, &tmp);
if (ret != OPUS_OK) break;
*value ^= tmp;
}
}
break;
case OPUS_RESET_STATE:
{
int s;
for (s=0;s<st->layout.nb_streams;s++)
{
OpusDecoder *dec;
dec = (OpusDecoder*)ptr;
if (s < st->layout.nb_coupled_streams)
ptr += align(coupled_size);
else
ptr += align(mono_size);
ret = opus_decoder_ctl(dec, OPUS_RESET_STATE);
if (ret != OPUS_OK)
break;
}
}
break;
case OPUS_MULTISTREAM_GET_DECODER_STATE_REQUEST:
{
int s;
opus_int32 stream_id;
OpusDecoder **value;
stream_id = va_arg(ap, opus_int32);
if (stream_id<0 || stream_id >= st->layout.nb_streams)
ret = OPUS_BAD_ARG;
value = va_arg(ap, OpusDecoder**);
if (!value)
{
goto bad_arg;
}
for (s=0;s<stream_id;s++)
{
if (s < st->layout.nb_coupled_streams)
ptr += align(coupled_size);
else
ptr += align(mono_size);
}
*value = (OpusDecoder*)ptr;
}
break;
case OPUS_SET_GAIN_REQUEST:
{
int s;
/* This works for int32 params */
opus_int32 value = va_arg(ap, opus_int32);
for (s=0;s<st->layout.nb_streams;s++)
{
OpusDecoder *dec;
dec = (OpusDecoder*)ptr;
if (s < st->layout.nb_coupled_streams)
ptr += align(coupled_size);
else
ptr += align(mono_size);
ret = opus_decoder_ctl(dec, request, value);
if (ret != OPUS_OK)
break;
}
}
break;
default:
ret = OPUS_UNIMPLEMENTED;
break;
}
va_end(ap);
return ret;
bad_arg:
va_end(ap);
return OPUS_BAD_ARG;
}
void opus_multistream_decoder_destroy(OpusMSDecoder *st)
{
opus_free(st);
}

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/* Copyright (c) 2012 Xiph.Org Foundation
Written by Jean-Marc Valin */
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef OPUS_PRIVATE_H
#define OPUS_PRIVATE_H
#include "arch.h"
#include "opus.h"
#include "celt.h"
struct OpusRepacketizer {
unsigned char toc;
int nb_frames;
const unsigned char *frames[48];
opus_int16 len[48];
int framesize;
};
typedef struct ChannelLayout {
int nb_channels;
int nb_streams;
int nb_coupled_streams;
unsigned char mapping[256];
} ChannelLayout;
int validate_layout(const ChannelLayout *layout);
int get_left_channel(const ChannelLayout *layout, int stream_id, int prev);
int get_right_channel(const ChannelLayout *layout, int stream_id, int prev);
int get_mono_channel(const ChannelLayout *layout, int stream_id, int prev);
#define MODE_SILK_ONLY 1000
#define MODE_HYBRID 1001
#define MODE_CELT_ONLY 1002
#define OPUS_SET_VOICE_RATIO_REQUEST 11018
#define OPUS_GET_VOICE_RATIO_REQUEST 11019
/** Configures the encoder's expected percentage of voice
* opposed to music or other signals.
*
* @note This interface is currently more aspiration than actuality. It's
* ultimately expected to bias an automatic signal classifier, but it currently
* just shifts the static bitrate to mode mapping around a little bit.
*
* @param[in] x <tt>int</tt>: Voice percentage in the range 0-100, inclusive.
* @hideinitializer */
#define OPUS_SET_VOICE_RATIO(x) OPUS_SET_VOICE_RATIO_REQUEST, __opus_check_int(x)
/** Gets the encoder's configured voice ratio value, @see OPUS_SET_VOICE_RATIO
*
* @param[out] x <tt>int*</tt>: Voice percentage in the range 0-100, inclusive.
* @hideinitializer */
#define OPUS_GET_VOICE_RATIO(x) OPUS_GET_VOICE_RATIO_REQUEST, __opus_check_int_ptr(x)
#define OPUS_SET_FORCE_MODE_REQUEST 11002
#define OPUS_SET_FORCE_MODE(x) OPUS_SET_FORCE_MODE_REQUEST, __opus_check_int(x)
typedef void (*downmix_func)(const void *, opus_val32 *, int, int, int, int, int);
void downmix_float(const void *_x, opus_val32 *sub, int subframe, int offset, int c1, int c2, int C);
void downmix_int(const void *_x, opus_val32 *sub, int subframe, int offset, int c1, int c2, int C);
int optimize_framesize(const opus_val16 *x, int len, int C, opus_int32 Fs,
int bitrate, opus_val16 tonality, float *mem, int buffering,
downmix_func downmix);
int encode_size(int size, unsigned char *data);
opus_int32 frame_size_select(opus_int32 frame_size, int variable_duration, opus_int32 Fs);
opus_int32 compute_frame_size(const void *analysis_pcm, int frame_size,
int variable_duration, int C, opus_int32 Fs, int bitrate_bps,
int delay_compensation, downmix_func downmix
#ifndef DISABLE_FLOAT_API
, float *subframe_mem
#endif
);
opus_int32 opus_encode_native(OpusEncoder *st, const opus_val16 *pcm, int frame_size,
unsigned char *data, opus_int32 out_data_bytes, int lsb_depth,
const void *analysis_pcm, opus_int32 analysis_size, int c1, int c2, int analysis_channels, downmix_func downmix);
int opus_decode_native(OpusDecoder *st, const unsigned char *data, opus_int32 len,
opus_val16 *pcm, int frame_size, int decode_fec, int self_delimited,
opus_int32 *packet_offset, int soft_clip);
/* Make sure everything's aligned to sizeof(void *) bytes */
static OPUS_INLINE int align(int i)
{
return (i+(int)sizeof(void *)-1)&-(int)sizeof(void *);
}
int opus_packet_parse_impl(const unsigned char *data, opus_int32 len,
int self_delimited, unsigned char *out_toc,
const unsigned char *frames[48], opus_int16 size[48],
int *payload_offset, opus_int32 *packet_offset);
opus_int32 opus_repacketizer_out_range_impl(OpusRepacketizer *rp, int begin, int end,
unsigned char *data, opus_int32 maxlen, int self_delimited, int pad);
int pad_frame(unsigned char *data, opus_int32 len, opus_int32 new_len);
#endif /* OPUS_PRIVATE_H */

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/* (C) COPYRIGHT 1994-2002 Xiph.Org Foundation */
/* Modified by Jean-Marc Valin */
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/* opus_types.h based on ogg_types.h from libogg */
/**
@file opus_types.h
@brief Opus reference implementation types
*/
#ifndef OPUS_TYPES_H
#define OPUS_TYPES_H
/* Use the real stdint.h if it's there (taken from Paul Hsieh's pstdint.h) */
#if (defined(__STDC__) && __STDC__ && __STDC_VERSION__ >= 199901L) || (defined(__GNUC__) && (defined(_STDINT_H) || defined(_STDINT_H_)) || defined (HAVE_STDINT_H))
#include <stdint.h>
typedef int16_t opus_int16;
typedef uint16_t opus_uint16;
typedef int32_t opus_int32;
typedef uint32_t opus_uint32;
#elif defined(_WIN32)
# if defined(__CYGWIN__)
# include <_G_config.h>
typedef _G_int32_t opus_int32;
typedef _G_uint32_t opus_uint32;
typedef _G_int16 opus_int16;
typedef _G_uint16 opus_uint16;
# elif defined(__MINGW32__)
typedef short opus_int16;
typedef unsigned short opus_uint16;
typedef int opus_int32;
typedef unsigned int opus_uint32;
# elif defined(__MWERKS__)
typedef int opus_int32;
typedef unsigned int opus_uint32;
typedef short opus_int16;
typedef unsigned short opus_uint16;
# else
/* MSVC/Borland */
typedef __int32 opus_int32;
typedef unsigned __int32 opus_uint32;
typedef __int16 opus_int16;
typedef unsigned __int16 opus_uint16;
# endif
#elif defined(__MACOS__)
# include <sys/types.h>
typedef SInt16 opus_int16;
typedef UInt16 opus_uint16;
typedef SInt32 opus_int32;
typedef UInt32 opus_uint32;
#elif (defined(__APPLE__) && defined(__MACH__)) /* MacOS X Framework build */
# include <sys/types.h>
typedef int16_t opus_int16;
typedef u_int16_t opus_uint16;
typedef int32_t opus_int32;
typedef u_int32_t opus_uint32;
#elif defined(__BEOS__)
/* Be */
# include <inttypes.h>
typedef int16 opus_int16;
typedef u_int16 opus_uint16;
typedef int32_t opus_int32;
typedef u_int32_t opus_uint32;
#elif defined (__EMX__)
/* OS/2 GCC */
typedef short opus_int16;
typedef unsigned short opus_uint16;
typedef int opus_int32;
typedef unsigned int opus_uint32;
#elif defined (DJGPP)
/* DJGPP */
typedef short opus_int16;
typedef unsigned short opus_uint16;
typedef int opus_int32;
typedef unsigned int opus_uint32;
#elif defined(R5900)
/* PS2 EE */
typedef int opus_int32;
typedef unsigned opus_uint32;
typedef short opus_int16;
typedef unsigned short opus_uint16;
#elif defined(__SYMBIAN32__)
/* Symbian GCC */
typedef signed short opus_int16;
typedef unsigned short opus_uint16;
typedef signed int opus_int32;
typedef unsigned int opus_uint32;
#elif defined(CONFIG_TI_C54X) || defined (CONFIG_TI_C55X)
typedef short opus_int16;
typedef unsigned short opus_uint16;
typedef long opus_int32;
typedef unsigned long opus_uint32;
#elif defined(CONFIG_TI_C6X)
typedef short opus_int16;
typedef unsigned short opus_uint16;
typedef int opus_int32;
typedef unsigned int opus_uint32;
#else
/* Give up, take a reasonable guess */
typedef short opus_int16;
typedef unsigned short opus_uint16;
typedef int opus_int32;
typedef unsigned int opus_uint32;
#endif
#define opus_int int /* used for counters etc; at least 16 bits */
#define opus_int64 long long
#define opus_int8 signed char
#define opus_uint unsigned int /* used for counters etc; at least 16 bits */
#define opus_uint64 unsigned long long
#define opus_uint8 unsigned char
#endif /* OPUS_TYPES_H */

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/* Copyright (c) 2011 Xiph.Org Foundation
Written by Jean-Marc Valin */
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "opus.h"
#include "opus_private.h"
#include "os_support.h"
int opus_repacketizer_get_size(void)
{
return sizeof(OpusRepacketizer);
}
OpusRepacketizer *opus_repacketizer_init(OpusRepacketizer *rp)
{
rp->nb_frames = 0;
return rp;
}
OpusRepacketizer *opus_repacketizer_create(void)
{
OpusRepacketizer *rp;
rp=(OpusRepacketizer *)opus_alloc(opus_repacketizer_get_size());
if(rp==NULL)return NULL;
return opus_repacketizer_init(rp);
}
void opus_repacketizer_destroy(OpusRepacketizer *rp)
{
opus_free(rp);
}
static int opus_repacketizer_cat_impl(OpusRepacketizer *rp, const unsigned char *data, opus_int32 len, int self_delimited)
{
unsigned char tmp_toc;
int curr_nb_frames,ret;
/* Set of check ToC */
if (len<1) return OPUS_INVALID_PACKET;
if (rp->nb_frames == 0)
{
rp->toc = data[0];
rp->framesize = opus_packet_get_samples_per_frame(data, 8000);
} else if ((rp->toc&0xFC) != (data[0]&0xFC))
{
/*fprintf(stderr, "toc mismatch: 0x%x vs 0x%x\n", rp->toc, data[0]);*/
return OPUS_INVALID_PACKET;
}
curr_nb_frames = opus_packet_get_nb_frames(data, len);
if(curr_nb_frames<1) return OPUS_INVALID_PACKET;
/* Check the 120 ms maximum packet size */
if ((curr_nb_frames+rp->nb_frames)*rp->framesize > 960)
{
return OPUS_INVALID_PACKET;
}
ret=opus_packet_parse_impl(data, len, self_delimited, &tmp_toc, &rp->frames[rp->nb_frames], &rp->len[rp->nb_frames], NULL, NULL);
if(ret<1)return ret;
rp->nb_frames += curr_nb_frames;
return OPUS_OK;
}
int opus_repacketizer_cat(OpusRepacketizer *rp, const unsigned char *data, opus_int32 len)
{
return opus_repacketizer_cat_impl(rp, data, len, 0);
}
int opus_repacketizer_get_nb_frames(OpusRepacketizer *rp)
{
return rp->nb_frames;
}
opus_int32 opus_repacketizer_out_range_impl(OpusRepacketizer *rp, int begin, int end,
unsigned char *data, opus_int32 maxlen, int self_delimited, int pad)
{
int i, count;
opus_int32 tot_size;
opus_int16 *len;
const unsigned char **frames;
unsigned char * ptr;
if (begin<0 || begin>=end || end>rp->nb_frames)
{
/*fprintf(stderr, "%d %d %d\n", begin, end, rp->nb_frames);*/
return OPUS_BAD_ARG;
}
count = end-begin;
len = rp->len+begin;
frames = rp->frames+begin;
if (self_delimited)
tot_size = 1 + (len[count-1]>=252);
else
tot_size = 0;
ptr = data;
if (count==1)
{
/* Code 0 */
tot_size += len[0]+1;
if (tot_size > maxlen)
return OPUS_BUFFER_TOO_SMALL;
*ptr++ = rp->toc&0xFC;
} else if (count==2)
{
if (len[1] == len[0])
{
/* Code 1 */
tot_size += 2*len[0]+1;
if (tot_size > maxlen)
return OPUS_BUFFER_TOO_SMALL;
*ptr++ = (rp->toc&0xFC) | 0x1;
} else {
/* Code 2 */
tot_size += len[0]+len[1]+2+(len[0]>=252);
if (tot_size > maxlen)
return OPUS_BUFFER_TOO_SMALL;
*ptr++ = (rp->toc&0xFC) | 0x2;
ptr += encode_size(len[0], ptr);
}
}
if (count > 2 || (pad && tot_size < maxlen))
{
/* Code 3 */
int vbr;
int pad_amount=0;
/* Restart the process for the padding case */
ptr = data;
if (self_delimited)
tot_size = 1 + (len[count-1]>=252);
else
tot_size = 0;
vbr = 0;
for (i=1;i<count;i++)
{
if (len[i] != len[0])
{
vbr=1;
break;
}
}
if (vbr)
{
tot_size += 2;
for (i=0;i<count-1;i++)
tot_size += 1 + (len[i]>=252) + len[i];
tot_size += len[count-1];
if (tot_size > maxlen)
return OPUS_BUFFER_TOO_SMALL;
*ptr++ = (rp->toc&0xFC) | 0x3;
*ptr++ = count | 0x80;
} else {
tot_size += count*len[0]+2;
if (tot_size > maxlen)
return OPUS_BUFFER_TOO_SMALL;
*ptr++ = (rp->toc&0xFC) | 0x3;
*ptr++ = count;
}
pad_amount = pad ? (maxlen-tot_size) : 0;
if (pad_amount != 0)
{
int nb_255s;
data[1] |= 0x40;
nb_255s = (pad_amount-1)/255;
for (i=0;i<nb_255s;i++)
*ptr++ = 255;
*ptr++ = pad_amount-255*nb_255s-1;
tot_size += pad_amount;
}
if (vbr)
{
for (i=0;i<count-1;i++)
ptr += encode_size(len[i], ptr);
}
}
if (self_delimited) {
int sdlen = encode_size(len[count-1], ptr);
ptr += sdlen;
}
/* Copy the actual data */
for (i=0;i<count;i++)
{
/* Using OPUS_MOVE() instead of OPUS_COPY() in case we're doing in-place
padding from opus_packet_pad or opus_packet_unpad(). */
celt_assert(frames[i] + len[i] <= data || ptr <= frames[i]);
OPUS_MOVE(ptr, frames[i], len[i]);
ptr += len[i];
}
if (pad)
{
for (i=ptr-data;i<maxlen;i++)
data[i] = 0;
}
return tot_size;
}
opus_int32 opus_repacketizer_out_range(OpusRepacketizer *rp, int begin, int end, unsigned char *data, opus_int32 maxlen)
{
return opus_repacketizer_out_range_impl(rp, begin, end, data, maxlen, 0, 0);
}
opus_int32 opus_repacketizer_out(OpusRepacketizer *rp, unsigned char *data, opus_int32 maxlen)
{
return opus_repacketizer_out_range_impl(rp, 0, rp->nb_frames, data, maxlen, 0, 0);
}
int opus_packet_pad(unsigned char *data, opus_int32 len, opus_int32 new_len)
{
OpusRepacketizer rp;
opus_int32 ret;
if (len < 1)
return OPUS_BAD_ARG;
if (len==new_len)
return OPUS_OK;
else if (len > new_len)
return OPUS_BAD_ARG;
opus_repacketizer_init(&rp);
/* Moving payload to the end of the packet so we can do in-place padding */
OPUS_MOVE(data+new_len-len, data, len);
opus_repacketizer_cat(&rp, data+new_len-len, len);
ret = opus_repacketizer_out_range_impl(&rp, 0, rp.nb_frames, data, new_len, 0, 1);
if (ret > 0)
return OPUS_OK;
else
return ret;
}
opus_int32 opus_packet_unpad(unsigned char *data, opus_int32 len)
{
OpusRepacketizer rp;
opus_int32 ret;
if (len < 1)
return OPUS_BAD_ARG;
opus_repacketizer_init(&rp);
ret = opus_repacketizer_cat(&rp, data, len);
if (ret < 0)
return ret;
ret = opus_repacketizer_out_range_impl(&rp, 0, rp.nb_frames, data, len, 0, 0);
celt_assert(ret > 0 && ret <= len);
return ret;
}
int opus_multistream_packet_pad(unsigned char *data, opus_int32 len, opus_int32 new_len, int nb_streams)
{
int s;
int count;
unsigned char toc;
opus_int16 size[48];
opus_int32 packet_offset;
opus_int32 amount;
if (len < 1)
return OPUS_BAD_ARG;
if (len==new_len)
return OPUS_OK;
else if (len > new_len)
return OPUS_BAD_ARG;
amount = new_len - len;
/* Seek to last stream */
for (s=0;s<nb_streams-1;s++)
{
if (len<=0)
return OPUS_INVALID_PACKET;
count = opus_packet_parse_impl(data, len, 1, &toc, NULL,
size, NULL, &packet_offset);
if (count<0)
return count;
data += packet_offset;
len -= packet_offset;
}
return opus_packet_pad(data, len, len+amount);
}
opus_int32 opus_multistream_packet_unpad(unsigned char *data, opus_int32 len, int nb_streams)
{
int s;
unsigned char toc;
opus_int16 size[48];
opus_int32 packet_offset;
OpusRepacketizer rp;
unsigned char *dst;
opus_int32 dst_len;
if (len < 1)
return OPUS_BAD_ARG;
dst = data;
dst_len = 0;
/* Unpad all frames */
for (s=0;s<nb_streams;s++)
{
opus_int32 ret;
int self_delimited = s!=nb_streams-1;
if (len<=0)
return OPUS_INVALID_PACKET;
opus_repacketizer_init(&rp);
ret = opus_packet_parse_impl(data, len, self_delimited, &toc, NULL,
size, NULL, &packet_offset);
if (ret<0)
return ret;
ret = opus_repacketizer_cat_impl(&rp, data, packet_offset, self_delimited);
if (ret < 0)
return ret;
ret = opus_repacketizer_out_range_impl(&rp, 0, rp.nb_frames, dst, len, self_delimited, 0);
if (ret < 0)
return ret;
else
dst_len += ret;
dst += ret;
data += packet_offset;
len -= packet_offset;
}
return dst_len;
}

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src/engine/external/opus/silk/A2NLSF.c vendored Normal file
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/***********************************************************************
Copyright (c) 2006-2011, Skype Limited. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
- Neither the name of Internet Society, IETF or IETF Trust, nor the
names of specific contributors, may be used to endorse or promote
products derived from this software without specific prior written
permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
***********************************************************************/
/* Conversion between prediction filter coefficients and NLSFs */
/* Requires the order to be an even number */
/* A piecewise linear approximation maps LSF <-> cos(LSF) */
/* Therefore the result is not accurate NLSFs, but the two */
/* functions are accurate inverses of each other */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "SigProc_FIX.h"
#include "tables.h"
/* Number of binary divisions, when not in low complexity mode */
#define BIN_DIV_STEPS_A2NLSF_FIX 3 /* must be no higher than 16 - log2( LSF_COS_TAB_SZ_FIX ) */
#define MAX_ITERATIONS_A2NLSF_FIX 30
/* Helper function for A2NLSF(..) */
/* Transforms polynomials from cos(n*f) to cos(f)^n */
static OPUS_INLINE void silk_A2NLSF_trans_poly(
opus_int32 *p, /* I/O Polynomial */
const opus_int dd /* I Polynomial order (= filter order / 2 ) */
)
{
opus_int k, n;
for( k = 2; k <= dd; k++ ) {
for( n = dd; n > k; n-- ) {
p[ n - 2 ] -= p[ n ];
}
p[ k - 2 ] -= silk_LSHIFT( p[ k ], 1 );
}
}
/* Helper function for A2NLSF(..) */
/* Polynomial evaluation */
static OPUS_INLINE opus_int32 silk_A2NLSF_eval_poly( /* return the polynomial evaluation, in Q16 */
opus_int32 *p, /* I Polynomial, Q16 */
const opus_int32 x, /* I Evaluation point, Q12 */
const opus_int dd /* I Order */
)
{
opus_int n;
opus_int32 x_Q16, y32;
y32 = p[ dd ]; /* Q16 */
x_Q16 = silk_LSHIFT( x, 4 );
for( n = dd - 1; n >= 0; n-- ) {
y32 = silk_SMLAWW( p[ n ], y32, x_Q16 ); /* Q16 */
}
return y32;
}
static OPUS_INLINE void silk_A2NLSF_init(
const opus_int32 *a_Q16,
opus_int32 *P,
opus_int32 *Q,
const opus_int dd
)
{
opus_int k;
/* Convert filter coefs to even and odd polynomials */
P[dd] = silk_LSHIFT( 1, 16 );
Q[dd] = silk_LSHIFT( 1, 16 );
for( k = 0; k < dd; k++ ) {
P[ k ] = -a_Q16[ dd - k - 1 ] - a_Q16[ dd + k ]; /* Q16 */
Q[ k ] = -a_Q16[ dd - k - 1 ] + a_Q16[ dd + k ]; /* Q16 */
}
/* Divide out zeros as we have that for even filter orders, */
/* z = 1 is always a root in Q, and */
/* z = -1 is always a root in P */
for( k = dd; k > 0; k-- ) {
P[ k - 1 ] -= P[ k ];
Q[ k - 1 ] += Q[ k ];
}
/* Transform polynomials from cos(n*f) to cos(f)^n */
silk_A2NLSF_trans_poly( P, dd );
silk_A2NLSF_trans_poly( Q, dd );
}
/* Compute Normalized Line Spectral Frequencies (NLSFs) from whitening filter coefficients */
/* If not all roots are found, the a_Q16 coefficients are bandwidth expanded until convergence. */
void silk_A2NLSF(
opus_int16 *NLSF, /* O Normalized Line Spectral Frequencies in Q15 (0..2^15-1) [d] */
opus_int32 *a_Q16, /* I/O Monic whitening filter coefficients in Q16 [d] */
const opus_int d /* I Filter order (must be even) */
)
{
opus_int i, k, m, dd, root_ix, ffrac;
opus_int32 xlo, xhi, xmid;
opus_int32 ylo, yhi, ymid, thr;
opus_int32 nom, den;
opus_int32 P[ SILK_MAX_ORDER_LPC / 2 + 1 ];
opus_int32 Q[ SILK_MAX_ORDER_LPC / 2 + 1 ];
opus_int32 *PQ[ 2 ];
opus_int32 *p;
/* Store pointers to array */
PQ[ 0 ] = P;
PQ[ 1 ] = Q;
dd = silk_RSHIFT( d, 1 );
silk_A2NLSF_init( a_Q16, P, Q, dd );
/* Find roots, alternating between P and Q */
p = P; /* Pointer to polynomial */
xlo = silk_LSFCosTab_FIX_Q12[ 0 ]; /* Q12*/
ylo = silk_A2NLSF_eval_poly( p, xlo, dd );
if( ylo < 0 ) {
/* Set the first NLSF to zero and move on to the next */
NLSF[ 0 ] = 0;
p = Q; /* Pointer to polynomial */
ylo = silk_A2NLSF_eval_poly( p, xlo, dd );
root_ix = 1; /* Index of current root */
} else {
root_ix = 0; /* Index of current root */
}
k = 1; /* Loop counter */
i = 0; /* Counter for bandwidth expansions applied */
thr = 0;
while( 1 ) {
/* Evaluate polynomial */
xhi = silk_LSFCosTab_FIX_Q12[ k ]; /* Q12 */
yhi = silk_A2NLSF_eval_poly( p, xhi, dd );
/* Detect zero crossing */
if( ( ylo <= 0 && yhi >= thr ) || ( ylo >= 0 && yhi <= -thr ) ) {
if( yhi == 0 ) {
/* If the root lies exactly at the end of the current */
/* interval, look for the next root in the next interval */
thr = 1;
} else {
thr = 0;
}
/* Binary division */
ffrac = -256;
for( m = 0; m < BIN_DIV_STEPS_A2NLSF_FIX; m++ ) {
/* Evaluate polynomial */
xmid = silk_RSHIFT_ROUND( xlo + xhi, 1 );
ymid = silk_A2NLSF_eval_poly( p, xmid, dd );
/* Detect zero crossing */
if( ( ylo <= 0 && ymid >= 0 ) || ( ylo >= 0 && ymid <= 0 ) ) {
/* Reduce frequency */
xhi = xmid;
yhi = ymid;
} else {
/* Increase frequency */
xlo = xmid;
ylo = ymid;
ffrac = silk_ADD_RSHIFT( ffrac, 128, m );
}
}
/* Interpolate */
if( silk_abs( ylo ) < 65536 ) {
/* Avoid dividing by zero */
den = ylo - yhi;
nom = silk_LSHIFT( ylo, 8 - BIN_DIV_STEPS_A2NLSF_FIX ) + silk_RSHIFT( den, 1 );
if( den != 0 ) {
ffrac += silk_DIV32( nom, den );
}
} else {
/* No risk of dividing by zero because abs(ylo - yhi) >= abs(ylo) >= 65536 */
ffrac += silk_DIV32( ylo, silk_RSHIFT( ylo - yhi, 8 - BIN_DIV_STEPS_A2NLSF_FIX ) );
}
NLSF[ root_ix ] = (opus_int16)silk_min_32( silk_LSHIFT( (opus_int32)k, 8 ) + ffrac, silk_int16_MAX );
silk_assert( NLSF[ root_ix ] >= 0 );
root_ix++; /* Next root */
if( root_ix >= d ) {
/* Found all roots */
break;
}
/* Alternate pointer to polynomial */
p = PQ[ root_ix & 1 ];
/* Evaluate polynomial */
xlo = silk_LSFCosTab_FIX_Q12[ k - 1 ]; /* Q12*/
ylo = silk_LSHIFT( 1 - ( root_ix & 2 ), 12 );
} else {
/* Increment loop counter */
k++;
xlo = xhi;
ylo = yhi;
thr = 0;
if( k > LSF_COS_TAB_SZ_FIX ) {
i++;
if( i > MAX_ITERATIONS_A2NLSF_FIX ) {
/* Set NLSFs to white spectrum and exit */
NLSF[ 0 ] = (opus_int16)silk_DIV32_16( 1 << 15, d + 1 );
for( k = 1; k < d; k++ ) {
NLSF[ k ] = (opus_int16)silk_SMULBB( k + 1, NLSF[ 0 ] );
}
return;
}
/* Error: Apply progressively more bandwidth expansion and run again */
silk_bwexpander_32( a_Q16, d, 65536 - silk_SMULBB( 10 + i, i ) ); /* 10_Q16 = 0.00015*/
silk_A2NLSF_init( a_Q16, P, Q, dd );
p = P; /* Pointer to polynomial */
xlo = silk_LSFCosTab_FIX_Q12[ 0 ]; /* Q12*/
ylo = silk_A2NLSF_eval_poly( p, xlo, dd );
if( ylo < 0 ) {
/* Set the first NLSF to zero and move on to the next */
NLSF[ 0 ] = 0;
p = Q; /* Pointer to polynomial */
ylo = silk_A2NLSF_eval_poly( p, xlo, dd );
root_ix = 1; /* Index of current root */
} else {
root_ix = 0; /* Index of current root */
}
k = 1; /* Reset loop counter */
}
}
}
}

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/***********************************************************************
Copyright (c) 2006-2011, Skype Limited. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
- Neither the name of Internet Society, IETF or IETF Trust, nor the
names of specific contributors, may be used to endorse or promote
products derived from this software without specific prior written
permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
***********************************************************************/
#ifndef SILK_API_H
#define SILK_API_H
#include "control.h"
#include "typedef.h"
#include "errors.h"
#include "entenc.h"
#include "entdec.h"
#ifdef __cplusplus
extern "C"
{
#endif
#define SILK_MAX_FRAMES_PER_PACKET 3
/* Struct for TOC (Table of Contents) */
typedef struct {
opus_int VADFlag; /* Voice activity for packet */
opus_int VADFlags[ SILK_MAX_FRAMES_PER_PACKET ]; /* Voice activity for each frame in packet */
opus_int inbandFECFlag; /* Flag indicating if packet contains in-band FEC */
} silk_TOC_struct;
/****************************************/
/* Encoder functions */
/****************************************/
/***********************************************/
/* Get size in bytes of the Silk encoder state */
/***********************************************/
opus_int silk_Get_Encoder_Size( /* O Returns error code */
opus_int *encSizeBytes /* O Number of bytes in SILK encoder state */
);
/*************************/
/* Init or reset encoder */
/*************************/
opus_int silk_InitEncoder( /* O Returns error code */
void *encState, /* I/O State */
int arch, /* I Run-time architecture */
silk_EncControlStruct *encStatus /* O Encoder Status */
);
/**************************/
/* Encode frame with Silk */
/**************************/
/* Note: if prefillFlag is set, the input must contain 10 ms of audio, irrespective of what */
/* encControl->payloadSize_ms is set to */
opus_int silk_Encode( /* O Returns error code */
void *encState, /* I/O State */
silk_EncControlStruct *encControl, /* I Control status */
const opus_int16 *samplesIn, /* I Speech sample input vector */
opus_int nSamplesIn, /* I Number of samples in input vector */
ec_enc *psRangeEnc, /* I/O Compressor data structure */
opus_int32 *nBytesOut, /* I/O Number of bytes in payload (input: Max bytes) */
const opus_int prefillFlag /* I Flag to indicate prefilling buffers no coding */
);
/****************************************/
/* Decoder functions */
/****************************************/
/***********************************************/
/* Get size in bytes of the Silk decoder state */
/***********************************************/
opus_int silk_Get_Decoder_Size( /* O Returns error code */
opus_int *decSizeBytes /* O Number of bytes in SILK decoder state */
);
/*************************/
/* Init or Reset decoder */
/*************************/
opus_int silk_InitDecoder( /* O Returns error code */
void *decState /* I/O State */
);
/******************/
/* Decode a frame */
/******************/
opus_int silk_Decode( /* O Returns error code */
void* decState, /* I/O State */
silk_DecControlStruct* decControl, /* I/O Control Structure */
opus_int lostFlag, /* I 0: no loss, 1 loss, 2 decode fec */
opus_int newPacketFlag, /* I Indicates first decoder call for this packet */
ec_dec *psRangeDec, /* I/O Compressor data structure */
opus_int16 *samplesOut, /* O Decoded output speech vector */
opus_int32 *nSamplesOut /* O Number of samples decoded */
);
#if 0
/**************************************/
/* Get table of contents for a packet */
/**************************************/
opus_int silk_get_TOC(
const opus_uint8 *payload, /* I Payload data */
const opus_int nBytesIn, /* I Number of input bytes */
const opus_int nFramesPerPayload, /* I Number of SILK frames per payload */
silk_TOC_struct *Silk_TOC /* O Type of content */
);
#endif
#ifdef __cplusplus
}
#endif
#endif

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/***********************************************************************
Copyright (c) 2006-2011, Skype Limited. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
- Neither the name of Internet Society, IETF or IETF Trust, nor the
names of specific contributors, may be used to endorse or promote
products derived from this software without specific prior written
permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
***********************************************************************/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "main.h"
#include "stack_alloc.h"
/* Generates excitation for CNG LPC synthesis */
static OPUS_INLINE void silk_CNG_exc(
opus_int32 residual_Q10[], /* O CNG residual signal Q10 */
opus_int32 exc_buf_Q14[], /* I Random samples buffer Q10 */
opus_int32 Gain_Q16, /* I Gain to apply */
opus_int length, /* I Length */
opus_int32 *rand_seed /* I/O Seed to random index generator */
)
{
opus_int32 seed;
opus_int i, idx, exc_mask;
exc_mask = CNG_BUF_MASK_MAX;
while( exc_mask > length ) {
exc_mask = silk_RSHIFT( exc_mask, 1 );
}
seed = *rand_seed;
for( i = 0; i < length; i++ ) {
seed = silk_RAND( seed );
idx = (opus_int)( silk_RSHIFT( seed, 24 ) & exc_mask );
silk_assert( idx >= 0 );
silk_assert( idx <= CNG_BUF_MASK_MAX );
residual_Q10[ i ] = (opus_int16)silk_SAT16( silk_SMULWW( exc_buf_Q14[ idx ], Gain_Q16 >> 4 ) );
}
*rand_seed = seed;
}
void silk_CNG_Reset(
silk_decoder_state *psDec /* I/O Decoder state */
)
{
opus_int i, NLSF_step_Q15, NLSF_acc_Q15;
NLSF_step_Q15 = silk_DIV32_16( silk_int16_MAX, psDec->LPC_order + 1 );
NLSF_acc_Q15 = 0;
for( i = 0; i < psDec->LPC_order; i++ ) {
NLSF_acc_Q15 += NLSF_step_Q15;
psDec->sCNG.CNG_smth_NLSF_Q15[ i ] = NLSF_acc_Q15;
}
psDec->sCNG.CNG_smth_Gain_Q16 = 0;
psDec->sCNG.rand_seed = 3176576;
}
/* Updates CNG estimate, and applies the CNG when packet was lost */
void silk_CNG(
silk_decoder_state *psDec, /* I/O Decoder state */
silk_decoder_control *psDecCtrl, /* I/O Decoder control */
opus_int16 frame[], /* I/O Signal */
opus_int length /* I Length of residual */
)
{
opus_int i, subfr;
opus_int32 sum_Q6, max_Gain_Q16;
opus_int16 A_Q12[ MAX_LPC_ORDER ];
silk_CNG_struct *psCNG = &psDec->sCNG;
SAVE_STACK;
if( psDec->fs_kHz != psCNG->fs_kHz ) {
/* Reset state */
silk_CNG_Reset( psDec );
psCNG->fs_kHz = psDec->fs_kHz;
}
if( psDec->lossCnt == 0 && psDec->prevSignalType == TYPE_NO_VOICE_ACTIVITY ) {
/* Update CNG parameters */
/* Smoothing of LSF's */
for( i = 0; i < psDec->LPC_order; i++ ) {
psCNG->CNG_smth_NLSF_Q15[ i ] += silk_SMULWB( (opus_int32)psDec->prevNLSF_Q15[ i ] - (opus_int32)psCNG->CNG_smth_NLSF_Q15[ i ], CNG_NLSF_SMTH_Q16 );
}
/* Find the subframe with the highest gain */
max_Gain_Q16 = 0;
subfr = 0;
for( i = 0; i < psDec->nb_subfr; i++ ) {
if( psDecCtrl->Gains_Q16[ i ] > max_Gain_Q16 ) {
max_Gain_Q16 = psDecCtrl->Gains_Q16[ i ];
subfr = i;
}
}
/* Update CNG excitation buffer with excitation from this subframe */
silk_memmove( &psCNG->CNG_exc_buf_Q14[ psDec->subfr_length ], psCNG->CNG_exc_buf_Q14, ( psDec->nb_subfr - 1 ) * psDec->subfr_length * sizeof( opus_int32 ) );
silk_memcpy( psCNG->CNG_exc_buf_Q14, &psDec->exc_Q14[ subfr * psDec->subfr_length ], psDec->subfr_length * sizeof( opus_int32 ) );
/* Smooth gains */
for( i = 0; i < psDec->nb_subfr; i++ ) {
psCNG->CNG_smth_Gain_Q16 += silk_SMULWB( psDecCtrl->Gains_Q16[ i ] - psCNG->CNG_smth_Gain_Q16, CNG_GAIN_SMTH_Q16 );
}
}
/* Add CNG when packet is lost or during DTX */
if( psDec->lossCnt ) {
VARDECL( opus_int32, CNG_sig_Q10 );
ALLOC( CNG_sig_Q10, length + MAX_LPC_ORDER, opus_int32 );
/* Generate CNG excitation */
silk_CNG_exc( CNG_sig_Q10 + MAX_LPC_ORDER, psCNG->CNG_exc_buf_Q14, psCNG->CNG_smth_Gain_Q16, length, &psCNG->rand_seed );
/* Convert CNG NLSF to filter representation */
silk_NLSF2A( A_Q12, psCNG->CNG_smth_NLSF_Q15, psDec->LPC_order );
/* Generate CNG signal, by synthesis filtering */
silk_memcpy( CNG_sig_Q10, psCNG->CNG_synth_state, MAX_LPC_ORDER * sizeof( opus_int32 ) );
for( i = 0; i < length; i++ ) {
silk_assert( psDec->LPC_order == 10 || psDec->LPC_order == 16 );
/* Avoids introducing a bias because silk_SMLAWB() always rounds to -inf */
sum_Q6 = silk_RSHIFT( psDec->LPC_order, 1 );
sum_Q6 = silk_SMLAWB( sum_Q6, CNG_sig_Q10[ MAX_LPC_ORDER + i - 1 ], A_Q12[ 0 ] );
sum_Q6 = silk_SMLAWB( sum_Q6, CNG_sig_Q10[ MAX_LPC_ORDER + i - 2 ], A_Q12[ 1 ] );
sum_Q6 = silk_SMLAWB( sum_Q6, CNG_sig_Q10[ MAX_LPC_ORDER + i - 3 ], A_Q12[ 2 ] );
sum_Q6 = silk_SMLAWB( sum_Q6, CNG_sig_Q10[ MAX_LPC_ORDER + i - 4 ], A_Q12[ 3 ] );
sum_Q6 = silk_SMLAWB( sum_Q6, CNG_sig_Q10[ MAX_LPC_ORDER + i - 5 ], A_Q12[ 4 ] );
sum_Q6 = silk_SMLAWB( sum_Q6, CNG_sig_Q10[ MAX_LPC_ORDER + i - 6 ], A_Q12[ 5 ] );
sum_Q6 = silk_SMLAWB( sum_Q6, CNG_sig_Q10[ MAX_LPC_ORDER + i - 7 ], A_Q12[ 6 ] );
sum_Q6 = silk_SMLAWB( sum_Q6, CNG_sig_Q10[ MAX_LPC_ORDER + i - 8 ], A_Q12[ 7 ] );
sum_Q6 = silk_SMLAWB( sum_Q6, CNG_sig_Q10[ MAX_LPC_ORDER + i - 9 ], A_Q12[ 8 ] );
sum_Q6 = silk_SMLAWB( sum_Q6, CNG_sig_Q10[ MAX_LPC_ORDER + i - 10 ], A_Q12[ 9 ] );
if( psDec->LPC_order == 16 ) {
sum_Q6 = silk_SMLAWB( sum_Q6, CNG_sig_Q10[ MAX_LPC_ORDER + i - 11 ], A_Q12[ 10 ] );
sum_Q6 = silk_SMLAWB( sum_Q6, CNG_sig_Q10[ MAX_LPC_ORDER + i - 12 ], A_Q12[ 11 ] );
sum_Q6 = silk_SMLAWB( sum_Q6, CNG_sig_Q10[ MAX_LPC_ORDER + i - 13 ], A_Q12[ 12 ] );
sum_Q6 = silk_SMLAWB( sum_Q6, CNG_sig_Q10[ MAX_LPC_ORDER + i - 14 ], A_Q12[ 13 ] );
sum_Q6 = silk_SMLAWB( sum_Q6, CNG_sig_Q10[ MAX_LPC_ORDER + i - 15 ], A_Q12[ 14 ] );
sum_Q6 = silk_SMLAWB( sum_Q6, CNG_sig_Q10[ MAX_LPC_ORDER + i - 16 ], A_Q12[ 15 ] );
}
/* Update states */
CNG_sig_Q10[ MAX_LPC_ORDER + i ] = silk_ADD_LSHIFT( CNG_sig_Q10[ MAX_LPC_ORDER + i ], sum_Q6, 4 );
frame[ i ] = silk_ADD_SAT16( frame[ i ], silk_RSHIFT_ROUND( sum_Q6, 6 ) );
}
silk_memcpy( psCNG->CNG_synth_state, &CNG_sig_Q10[ length ], MAX_LPC_ORDER * sizeof( opus_int32 ) );
} else {
silk_memset( psCNG->CNG_synth_state, 0, psDec->LPC_order * sizeof( opus_int32 ) );
}
RESTORE_STACK;
}

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/***********************************************************************
Copyright (c) 2006-2011, Skype Limited. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
- Neither the name of Internet Society, IETF or IETF Trust, nor the
names of specific contributors, may be used to endorse or promote
products derived from this software without specific prior written
permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
***********************************************************************/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#ifdef FIXED_POINT
#include "main_FIX.h"
#else
#include "main_FLP.h"
#endif
#include "tuning_parameters.h"
/* High-pass filter with cutoff frequency adaptation based on pitch lag statistics */
void silk_HP_variable_cutoff(
silk_encoder_state_Fxx state_Fxx[] /* I/O Encoder states */
)
{
opus_int quality_Q15;
opus_int32 pitch_freq_Hz_Q16, pitch_freq_log_Q7, delta_freq_Q7;
silk_encoder_state *psEncC1 = &state_Fxx[ 0 ].sCmn;
/* Adaptive cutoff frequency: estimate low end of pitch frequency range */
if( psEncC1->prevSignalType == TYPE_VOICED ) {
/* difference, in log domain */
pitch_freq_Hz_Q16 = silk_DIV32_16( silk_LSHIFT( silk_MUL( psEncC1->fs_kHz, 1000 ), 16 ), psEncC1->prevLag );
pitch_freq_log_Q7 = silk_lin2log( pitch_freq_Hz_Q16 ) - ( 16 << 7 );
/* adjustment based on quality */
quality_Q15 = psEncC1->input_quality_bands_Q15[ 0 ];
pitch_freq_log_Q7 = silk_SMLAWB( pitch_freq_log_Q7, silk_SMULWB( silk_LSHIFT( -quality_Q15, 2 ), quality_Q15 ),
pitch_freq_log_Q7 - ( silk_lin2log( SILK_FIX_CONST( VARIABLE_HP_MIN_CUTOFF_HZ, 16 ) ) - ( 16 << 7 ) ) );
/* delta_freq = pitch_freq_log - psEnc->variable_HP_smth1; */
delta_freq_Q7 = pitch_freq_log_Q7 - silk_RSHIFT( psEncC1->variable_HP_smth1_Q15, 8 );
if( delta_freq_Q7 < 0 ) {
/* less smoothing for decreasing pitch frequency, to track something close to the minimum */
delta_freq_Q7 = silk_MUL( delta_freq_Q7, 3 );
}
/* limit delta, to reduce impact of outliers in pitch estimation */
delta_freq_Q7 = silk_LIMIT_32( delta_freq_Q7, -SILK_FIX_CONST( VARIABLE_HP_MAX_DELTA_FREQ, 7 ), SILK_FIX_CONST( VARIABLE_HP_MAX_DELTA_FREQ, 7 ) );
/* update smoother */
psEncC1->variable_HP_smth1_Q15 = silk_SMLAWB( psEncC1->variable_HP_smth1_Q15,
silk_SMULBB( psEncC1->speech_activity_Q8, delta_freq_Q7 ), SILK_FIX_CONST( VARIABLE_HP_SMTH_COEF1, 16 ) );
/* limit frequency range */
psEncC1->variable_HP_smth1_Q15 = silk_LIMIT_32( psEncC1->variable_HP_smth1_Q15,
silk_LSHIFT( silk_lin2log( VARIABLE_HP_MIN_CUTOFF_HZ ), 8 ),
silk_LSHIFT( silk_lin2log( VARIABLE_HP_MAX_CUTOFF_HZ ), 8 ) );
}
}

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/***********************************************************************
Copyright (c) 2006-2011, Skype Limited. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
- Neither the name of Internet Society, IETF or IETF Trust, nor the
names of specific contributors, may be used to endorse or promote
products derived from this software without specific prior written
permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
***********************************************************************/
/*! \file silk_Inlines.h
* \brief silk_Inlines.h defines OPUS_INLINE signal processing functions.
*/
#ifndef SILK_FIX_INLINES_H
#define SILK_FIX_INLINES_H
#ifdef __cplusplus
extern "C"
{
#endif
/* count leading zeros of opus_int64 */
static OPUS_INLINE opus_int32 silk_CLZ64( opus_int64 in )
{
opus_int32 in_upper;
in_upper = (opus_int32)silk_RSHIFT64(in, 32);
if (in_upper == 0) {
/* Search in the lower 32 bits */
return 32 + silk_CLZ32( (opus_int32) in );
} else {
/* Search in the upper 32 bits */
return silk_CLZ32( in_upper );
}
}
/* get number of leading zeros and fractional part (the bits right after the leading one */
static OPUS_INLINE void silk_CLZ_FRAC(
opus_int32 in, /* I input */
opus_int32 *lz, /* O number of leading zeros */
opus_int32 *frac_Q7 /* O the 7 bits right after the leading one */
)
{
opus_int32 lzeros = silk_CLZ32(in);
* lz = lzeros;
* frac_Q7 = silk_ROR32(in, 24 - lzeros) & 0x7f;
}
/* Approximation of square root */
/* Accuracy: < +/- 10% for output values > 15 */
/* < +/- 2.5% for output values > 120 */
static OPUS_INLINE opus_int32 silk_SQRT_APPROX( opus_int32 x )
{
opus_int32 y, lz, frac_Q7;
if( x <= 0 ) {
return 0;
}
silk_CLZ_FRAC(x, &lz, &frac_Q7);
if( lz & 1 ) {
y = 32768;
} else {
y = 46214; /* 46214 = sqrt(2) * 32768 */
}
/* get scaling right */
y >>= silk_RSHIFT(lz, 1);
/* increment using fractional part of input */
y = silk_SMLAWB(y, y, silk_SMULBB(213, frac_Q7));
return y;
}
/* Divide two int32 values and return result as int32 in a given Q-domain */
static OPUS_INLINE opus_int32 silk_DIV32_varQ( /* O returns a good approximation of "(a32 << Qres) / b32" */
const opus_int32 a32, /* I numerator (Q0) */
const opus_int32 b32, /* I denominator (Q0) */
const opus_int Qres /* I Q-domain of result (>= 0) */
)
{
opus_int a_headrm, b_headrm, lshift;
opus_int32 b32_inv, a32_nrm, b32_nrm, result;
silk_assert( b32 != 0 );
silk_assert( Qres >= 0 );
/* Compute number of bits head room and normalize inputs */
a_headrm = silk_CLZ32( silk_abs(a32) ) - 1;
a32_nrm = silk_LSHIFT(a32, a_headrm); /* Q: a_headrm */
b_headrm = silk_CLZ32( silk_abs(b32) ) - 1;
b32_nrm = silk_LSHIFT(b32, b_headrm); /* Q: b_headrm */
/* Inverse of b32, with 14 bits of precision */
b32_inv = silk_DIV32_16( silk_int32_MAX >> 2, silk_RSHIFT(b32_nrm, 16) ); /* Q: 29 + 16 - b_headrm */
/* First approximation */
result = silk_SMULWB(a32_nrm, b32_inv); /* Q: 29 + a_headrm - b_headrm */
/* Compute residual by subtracting product of denominator and first approximation */
/* It's OK to overflow because the final value of a32_nrm should always be small */
a32_nrm = silk_SUB32_ovflw(a32_nrm, silk_LSHIFT_ovflw( silk_SMMUL(b32_nrm, result), 3 )); /* Q: a_headrm */
/* Refinement */
result = silk_SMLAWB(result, a32_nrm, b32_inv); /* Q: 29 + a_headrm - b_headrm */
/* Convert to Qres domain */
lshift = 29 + a_headrm - b_headrm - Qres;
if( lshift < 0 ) {
return silk_LSHIFT_SAT32(result, -lshift);
} else {
if( lshift < 32){
return silk_RSHIFT(result, lshift);
} else {
/* Avoid undefined result */
return 0;
}
}
}
/* Invert int32 value and return result as int32 in a given Q-domain */
static OPUS_INLINE opus_int32 silk_INVERSE32_varQ( /* O returns a good approximation of "(1 << Qres) / b32" */
const opus_int32 b32, /* I denominator (Q0) */
const opus_int Qres /* I Q-domain of result (> 0) */
)
{
opus_int b_headrm, lshift;
opus_int32 b32_inv, b32_nrm, err_Q32, result;
silk_assert( b32 != 0 );
silk_assert( Qres > 0 );
/* Compute number of bits head room and normalize input */
b_headrm = silk_CLZ32( silk_abs(b32) ) - 1;
b32_nrm = silk_LSHIFT(b32, b_headrm); /* Q: b_headrm */
/* Inverse of b32, with 14 bits of precision */
b32_inv = silk_DIV32_16( silk_int32_MAX >> 2, silk_RSHIFT(b32_nrm, 16) ); /* Q: 29 + 16 - b_headrm */
/* First approximation */
result = silk_LSHIFT(b32_inv, 16); /* Q: 61 - b_headrm */
/* Compute residual by subtracting product of denominator and first approximation from one */
err_Q32 = silk_LSHIFT( ((opus_int32)1<<29) - silk_SMULWB(b32_nrm, b32_inv), 3 ); /* Q32 */
/* Refinement */
result = silk_SMLAWW(result, err_Q32, b32_inv); /* Q: 61 - b_headrm */
/* Convert to Qres domain */
lshift = 61 - b_headrm - Qres;
if( lshift <= 0 ) {
return silk_LSHIFT_SAT32(result, -lshift);
} else {
if( lshift < 32){
return silk_RSHIFT(result, lshift);
}else{
/* Avoid undefined result */
return 0;
}
}
}
#ifdef __cplusplus
}
#endif
#endif /* SILK_FIX_INLINES_H */

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/***********************************************************************
Copyright (c) 2006-2011, Skype Limited. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
- Neither the name of Internet Society, IETF or IETF Trust, nor the
names of specific contributors, may be used to endorse or promote
products derived from this software without specific prior written
permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
***********************************************************************/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "SigProc_FIX.h"
#include "celt_lpc.h"
/*******************************************/
/* LPC analysis filter */
/* NB! State is kept internally and the */
/* filter always starts with zero state */
/* first d output samples are set to zero */
/*******************************************/
void silk_LPC_analysis_filter(
opus_int16 *out, /* O Output signal */
const opus_int16 *in, /* I Input signal */
const opus_int16 *B, /* I MA prediction coefficients, Q12 [order] */
const opus_int32 len, /* I Signal length */
const opus_int32 d /* I Filter order */
)
{
opus_int j;
#ifdef FIXED_POINT
opus_int16 mem[SILK_MAX_ORDER_LPC];
opus_int16 num[SILK_MAX_ORDER_LPC];
#else
int ix;
opus_int32 out32_Q12, out32;
const opus_int16 *in_ptr;
#endif
silk_assert( d >= 6 );
silk_assert( (d & 1) == 0 );
silk_assert( d <= len );
#ifdef FIXED_POINT
silk_assert( d <= SILK_MAX_ORDER_LPC );
for ( j = 0; j < d; j++ ) {
num[ j ] = -B[ j ];
}
for (j=0;j<d;j++) {
mem[ j ] = in[ d - j - 1 ];
}
celt_fir( in + d, num, out + d, len - d, d, mem );
for ( j = 0; j < d; j++ ) {
out[ j ] = 0;
}
#else
for( ix = d; ix < len; ix++ ) {
in_ptr = &in[ ix - 1 ];
out32_Q12 = silk_SMULBB( in_ptr[ 0 ], B[ 0 ] );
/* Allowing wrap around so that two wraps can cancel each other. The rare
cases where the result wraps around can only be triggered by invalid streams*/
out32_Q12 = silk_SMLABB_ovflw( out32_Q12, in_ptr[ -1 ], B[ 1 ] );
out32_Q12 = silk_SMLABB_ovflw( out32_Q12, in_ptr[ -2 ], B[ 2 ] );
out32_Q12 = silk_SMLABB_ovflw( out32_Q12, in_ptr[ -3 ], B[ 3 ] );
out32_Q12 = silk_SMLABB_ovflw( out32_Q12, in_ptr[ -4 ], B[ 4 ] );
out32_Q12 = silk_SMLABB_ovflw( out32_Q12, in_ptr[ -5 ], B[ 5 ] );
for( j = 6; j < d; j += 2 ) {
out32_Q12 = silk_SMLABB_ovflw( out32_Q12, in_ptr[ -j ], B[ j ] );
out32_Q12 = silk_SMLABB_ovflw( out32_Q12, in_ptr[ -j - 1 ], B[ j + 1 ] );
}
/* Subtract prediction */
out32_Q12 = silk_SUB32_ovflw( silk_LSHIFT( (opus_int32)in_ptr[ 1 ], 12 ), out32_Q12 );
/* Scale to Q0 */
out32 = silk_RSHIFT_ROUND( out32_Q12, 12 );
/* Saturate output */
out[ ix ] = (opus_int16)silk_SAT16( out32 );
}
/* Set first d output samples to zero */
silk_memset( out, 0, d * sizeof( opus_int16 ) );
#endif
}

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/***********************************************************************
Copyright (c) 2006-2011, Skype Limited. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
- Neither the name of Internet Society, IETF or IETF Trust, nor the
names of specific contributors, may be used to endorse or promote
products derived from this software without specific prior written
permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
***********************************************************************/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "SigProc_FIX.h"
#define QA 24
#define A_LIMIT SILK_FIX_CONST( 0.99975, QA )
#define MUL32_FRAC_Q(a32, b32, Q) ((opus_int32)(silk_RSHIFT_ROUND64(silk_SMULL(a32, b32), Q)))
/* Compute inverse of LPC prediction gain, and */
/* test if LPC coefficients are stable (all poles within unit circle) */
static opus_int32 LPC_inverse_pred_gain_QA( /* O Returns inverse prediction gain in energy domain, Q30 */
opus_int32 A_QA[ 2 ][ SILK_MAX_ORDER_LPC ], /* I Prediction coefficients */
const opus_int order /* I Prediction order */
)
{
opus_int k, n, mult2Q;
opus_int32 invGain_Q30, rc_Q31, rc_mult1_Q30, rc_mult2, tmp_QA;
opus_int32 *Aold_QA, *Anew_QA;
Anew_QA = A_QA[ order & 1 ];
invGain_Q30 = (opus_int32)1 << 30;
for( k = order - 1; k > 0; k-- ) {
/* Check for stability */
if( ( Anew_QA[ k ] > A_LIMIT ) || ( Anew_QA[ k ] < -A_LIMIT ) ) {
return 0;
}
/* Set RC equal to negated AR coef */
rc_Q31 = -silk_LSHIFT( Anew_QA[ k ], 31 - QA );
/* rc_mult1_Q30 range: [ 1 : 2^30 ] */
rc_mult1_Q30 = ( (opus_int32)1 << 30 ) - silk_SMMUL( rc_Q31, rc_Q31 );
silk_assert( rc_mult1_Q30 > ( 1 << 15 ) ); /* reduce A_LIMIT if fails */
silk_assert( rc_mult1_Q30 <= ( 1 << 30 ) );
/* rc_mult2 range: [ 2^30 : silk_int32_MAX ] */
mult2Q = 32 - silk_CLZ32( silk_abs( rc_mult1_Q30 ) );
rc_mult2 = silk_INVERSE32_varQ( rc_mult1_Q30, mult2Q + 30 );
/* Update inverse gain */
/* invGain_Q30 range: [ 0 : 2^30 ] */
invGain_Q30 = silk_LSHIFT( silk_SMMUL( invGain_Q30, rc_mult1_Q30 ), 2 );
silk_assert( invGain_Q30 >= 0 );
silk_assert( invGain_Q30 <= ( 1 << 30 ) );
/* Swap pointers */
Aold_QA = Anew_QA;
Anew_QA = A_QA[ k & 1 ];
/* Update AR coefficient */
for( n = 0; n < k; n++ ) {
tmp_QA = Aold_QA[ n ] - MUL32_FRAC_Q( Aold_QA[ k - n - 1 ], rc_Q31, 31 );
Anew_QA[ n ] = MUL32_FRAC_Q( tmp_QA, rc_mult2 , mult2Q );
}
}
/* Check for stability */
if( ( Anew_QA[ 0 ] > A_LIMIT ) || ( Anew_QA[ 0 ] < -A_LIMIT ) ) {
return 0;
}
/* Set RC equal to negated AR coef */
rc_Q31 = -silk_LSHIFT( Anew_QA[ 0 ], 31 - QA );
/* Range: [ 1 : 2^30 ] */
rc_mult1_Q30 = ( (opus_int32)1 << 30 ) - silk_SMMUL( rc_Q31, rc_Q31 );
/* Update inverse gain */
/* Range: [ 0 : 2^30 ] */
invGain_Q30 = silk_LSHIFT( silk_SMMUL( invGain_Q30, rc_mult1_Q30 ), 2 );
silk_assert( invGain_Q30 >= 0 );
silk_assert( invGain_Q30 <= 1<<30 );
return invGain_Q30;
}
/* For input in Q12 domain */
opus_int32 silk_LPC_inverse_pred_gain( /* O Returns inverse prediction gain in energy domain, Q30 */
const opus_int16 *A_Q12, /* I Prediction coefficients, Q12 [order] */
const opus_int order /* I Prediction order */
)
{
opus_int k;
opus_int32 Atmp_QA[ 2 ][ SILK_MAX_ORDER_LPC ];
opus_int32 *Anew_QA;
opus_int32 DC_resp = 0;
Anew_QA = Atmp_QA[ order & 1 ];
/* Increase Q domain of the AR coefficients */
for( k = 0; k < order; k++ ) {
DC_resp += (opus_int32)A_Q12[ k ];
Anew_QA[ k ] = silk_LSHIFT32( (opus_int32)A_Q12[ k ], QA - 12 );
}
/* If the DC is unstable, we don't even need to do the full calculations */
if( DC_resp >= 4096 ) {
return 0;
}
return LPC_inverse_pred_gain_QA( Atmp_QA, order );
}
#ifdef FIXED_POINT
/* For input in Q24 domain */
opus_int32 silk_LPC_inverse_pred_gain_Q24( /* O Returns inverse prediction gain in energy domain, Q30 */
const opus_int32 *A_Q24, /* I Prediction coefficients [order] */
const opus_int order /* I Prediction order */
)
{
opus_int k;
opus_int32 Atmp_QA[ 2 ][ SILK_MAX_ORDER_LPC ];
opus_int32 *Anew_QA;
Anew_QA = Atmp_QA[ order & 1 ];
/* Increase Q domain of the AR coefficients */
for( k = 0; k < order; k++ ) {
Anew_QA[ k ] = silk_RSHIFT32( A_Q24[ k ], 24 - QA );
}
return LPC_inverse_pred_gain_QA( Atmp_QA, order );
}
#endif

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/***********************************************************************
Copyright (c) 2006-2011, Skype Limited. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
- Neither the name of Internet Society, IETF or IETF Trust, nor the
names of specific contributors, may be used to endorse or promote
products derived from this software without specific prior written
permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
***********************************************************************/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
/*
Elliptic/Cauer filters designed with 0.1 dB passband ripple,
80 dB minimum stopband attenuation, and
[0.95 : 0.15 : 0.35] normalized cut off frequencies.
*/
#include "main.h"
/* Helper function, interpolates the filter taps */
static OPUS_INLINE void silk_LP_interpolate_filter_taps(
opus_int32 B_Q28[ TRANSITION_NB ],
opus_int32 A_Q28[ TRANSITION_NA ],
const opus_int ind,
const opus_int32 fac_Q16
)
{
opus_int nb, na;
if( ind < TRANSITION_INT_NUM - 1 ) {
if( fac_Q16 > 0 ) {
if( fac_Q16 < 32768 ) { /* fac_Q16 is in range of a 16-bit int */
/* Piece-wise linear interpolation of B and A */
for( nb = 0; nb < TRANSITION_NB; nb++ ) {
B_Q28[ nb ] = silk_SMLAWB(
silk_Transition_LP_B_Q28[ ind ][ nb ],
silk_Transition_LP_B_Q28[ ind + 1 ][ nb ] -
silk_Transition_LP_B_Q28[ ind ][ nb ],
fac_Q16 );
}
for( na = 0; na < TRANSITION_NA; na++ ) {
A_Q28[ na ] = silk_SMLAWB(
silk_Transition_LP_A_Q28[ ind ][ na ],
silk_Transition_LP_A_Q28[ ind + 1 ][ na ] -
silk_Transition_LP_A_Q28[ ind ][ na ],
fac_Q16 );
}
} else { /* ( fac_Q16 - ( 1 << 16 ) ) is in range of a 16-bit int */
silk_assert( fac_Q16 - ( 1 << 16 ) == silk_SAT16( fac_Q16 - ( 1 << 16 ) ) );
/* Piece-wise linear interpolation of B and A */
for( nb = 0; nb < TRANSITION_NB; nb++ ) {
B_Q28[ nb ] = silk_SMLAWB(
silk_Transition_LP_B_Q28[ ind + 1 ][ nb ],
silk_Transition_LP_B_Q28[ ind + 1 ][ nb ] -
silk_Transition_LP_B_Q28[ ind ][ nb ],
fac_Q16 - ( (opus_int32)1 << 16 ) );
}
for( na = 0; na < TRANSITION_NA; na++ ) {
A_Q28[ na ] = silk_SMLAWB(
silk_Transition_LP_A_Q28[ ind + 1 ][ na ],
silk_Transition_LP_A_Q28[ ind + 1 ][ na ] -
silk_Transition_LP_A_Q28[ ind ][ na ],
fac_Q16 - ( (opus_int32)1 << 16 ) );
}
}
} else {
silk_memcpy( B_Q28, silk_Transition_LP_B_Q28[ ind ], TRANSITION_NB * sizeof( opus_int32 ) );
silk_memcpy( A_Q28, silk_Transition_LP_A_Q28[ ind ], TRANSITION_NA * sizeof( opus_int32 ) );
}
} else {
silk_memcpy( B_Q28, silk_Transition_LP_B_Q28[ TRANSITION_INT_NUM - 1 ], TRANSITION_NB * sizeof( opus_int32 ) );
silk_memcpy( A_Q28, silk_Transition_LP_A_Q28[ TRANSITION_INT_NUM - 1 ], TRANSITION_NA * sizeof( opus_int32 ) );
}
}
/* Low-pass filter with variable cutoff frequency based on */
/* piece-wise linear interpolation between elliptic filters */
/* Start by setting psEncC->mode <> 0; */
/* Deactivate by setting psEncC->mode = 0; */
void silk_LP_variable_cutoff(
silk_LP_state *psLP, /* I/O LP filter state */
opus_int16 *frame, /* I/O Low-pass filtered output signal */
const opus_int frame_length /* I Frame length */
)
{
opus_int32 B_Q28[ TRANSITION_NB ], A_Q28[ TRANSITION_NA ], fac_Q16 = 0;
opus_int ind = 0;
silk_assert( psLP->transition_frame_no >= 0 && psLP->transition_frame_no <= TRANSITION_FRAMES );
/* Run filter if needed */
if( psLP->mode != 0 ) {
/* Calculate index and interpolation factor for interpolation */
#if( TRANSITION_INT_STEPS == 64 )
fac_Q16 = silk_LSHIFT( TRANSITION_FRAMES - psLP->transition_frame_no, 16 - 6 );
#else
fac_Q16 = silk_DIV32_16( silk_LSHIFT( TRANSITION_FRAMES - psLP->transition_frame_no, 16 ), TRANSITION_FRAMES );
#endif
ind = silk_RSHIFT( fac_Q16, 16 );
fac_Q16 -= silk_LSHIFT( ind, 16 );
silk_assert( ind >= 0 );
silk_assert( ind < TRANSITION_INT_NUM );
/* Interpolate filter coefficients */
silk_LP_interpolate_filter_taps( B_Q28, A_Q28, ind, fac_Q16 );
/* Update transition frame number for next frame */
psLP->transition_frame_no = silk_LIMIT( psLP->transition_frame_no + psLP->mode, 0, TRANSITION_FRAMES );
/* ARMA low-pass filtering */
silk_assert( TRANSITION_NB == 3 && TRANSITION_NA == 2 );
silk_biquad_alt( frame, B_Q28, A_Q28, psLP->In_LP_State, frame, frame_length, 1);
}
}

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/***********************************************************************
Copyright (c) 2006-2011, Skype Limited. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
- Neither the name of Internet Society, IETF or IETF Trust, nor the
names of specific contributors, may be used to endorse or promote
products derived from this software without specific prior written
permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
***********************************************************************/
#ifndef SIGPROCFIX_API_MACROCOUNT_H
#define SIGPROCFIX_API_MACROCOUNT_H
#include <stdio.h>
#ifdef silk_MACRO_COUNT
#define varDefine opus_int64 ops_count = 0;
extern opus_int64 ops_count;
static OPUS_INLINE opus_int64 silk_SaveCount(){
return(ops_count);
}
static OPUS_INLINE opus_int64 silk_SaveResetCount(){
opus_int64 ret;
ret = ops_count;
ops_count = 0;
return(ret);
}
static OPUS_INLINE silk_PrintCount(){
printf("ops_count = %d \n ", (opus_int32)ops_count);
}
#undef silk_MUL
static OPUS_INLINE opus_int32 silk_MUL(opus_int32 a32, opus_int32 b32){
opus_int32 ret;
ops_count += 4;
ret = a32 * b32;
return ret;
}
#undef silk_MUL_uint
static OPUS_INLINE opus_uint32 silk_MUL_uint(opus_uint32 a32, opus_uint32 b32){
opus_uint32 ret;
ops_count += 4;
ret = a32 * b32;
return ret;
}
#undef silk_MLA
static OPUS_INLINE opus_int32 silk_MLA(opus_int32 a32, opus_int32 b32, opus_int32 c32){
opus_int32 ret;
ops_count += 4;
ret = a32 + b32 * c32;
return ret;
}
#undef silk_MLA_uint
static OPUS_INLINE opus_int32 silk_MLA_uint(opus_uint32 a32, opus_uint32 b32, opus_uint32 c32){
opus_uint32 ret;
ops_count += 4;
ret = a32 + b32 * c32;
return ret;
}
#undef silk_SMULWB
static OPUS_INLINE opus_int32 silk_SMULWB(opus_int32 a32, opus_int32 b32){
opus_int32 ret;
ops_count += 5;
ret = (a32 >> 16) * (opus_int32)((opus_int16)b32) + (((a32 & 0x0000FFFF) * (opus_int32)((opus_int16)b32)) >> 16);
return ret;
}
#undef silk_SMLAWB
static OPUS_INLINE opus_int32 silk_SMLAWB(opus_int32 a32, opus_int32 b32, opus_int32 c32){
opus_int32 ret;
ops_count += 5;
ret = ((a32) + ((((b32) >> 16) * (opus_int32)((opus_int16)(c32))) + ((((b32) & 0x0000FFFF) * (opus_int32)((opus_int16)(c32))) >> 16)));
return ret;
}
#undef silk_SMULWT
static OPUS_INLINE opus_int32 silk_SMULWT(opus_int32 a32, opus_int32 b32){
opus_int32 ret;
ops_count += 4;
ret = (a32 >> 16) * (b32 >> 16) + (((a32 & 0x0000FFFF) * (b32 >> 16)) >> 16);
return ret;
}
#undef silk_SMLAWT
static OPUS_INLINE opus_int32 silk_SMLAWT(opus_int32 a32, opus_int32 b32, opus_int32 c32){
opus_int32 ret;
ops_count += 4;
ret = a32 + ((b32 >> 16) * (c32 >> 16)) + (((b32 & 0x0000FFFF) * ((c32 >> 16)) >> 16));
return ret;
}
#undef silk_SMULBB
static OPUS_INLINE opus_int32 silk_SMULBB(opus_int32 a32, opus_int32 b32){
opus_int32 ret;
ops_count += 1;
ret = (opus_int32)((opus_int16)a32) * (opus_int32)((opus_int16)b32);
return ret;
}
#undef silk_SMLABB
static OPUS_INLINE opus_int32 silk_SMLABB(opus_int32 a32, opus_int32 b32, opus_int32 c32){
opus_int32 ret;
ops_count += 1;
ret = a32 + (opus_int32)((opus_int16)b32) * (opus_int32)((opus_int16)c32);
return ret;
}
#undef silk_SMULBT
static OPUS_INLINE opus_int32 silk_SMULBT(opus_int32 a32, opus_int32 b32 ){
opus_int32 ret;
ops_count += 4;
ret = ((opus_int32)((opus_int16)a32)) * (b32 >> 16);
return ret;
}
#undef silk_SMLABT
static OPUS_INLINE opus_int32 silk_SMLABT(opus_int32 a32, opus_int32 b32, opus_int32 c32){
opus_int32 ret;
ops_count += 1;
ret = a32 + ((opus_int32)((opus_int16)b32)) * (c32 >> 16);
return ret;
}
#undef silk_SMULTT
static OPUS_INLINE opus_int32 silk_SMULTT(opus_int32 a32, opus_int32 b32){
opus_int32 ret;
ops_count += 1;
ret = (a32 >> 16) * (b32 >> 16);
return ret;
}
#undef silk_SMLATT
static OPUS_INLINE opus_int32 silk_SMLATT(opus_int32 a32, opus_int32 b32, opus_int32 c32){
opus_int32 ret;
ops_count += 1;
ret = a32 + (b32 >> 16) * (c32 >> 16);
return ret;
}
/* multiply-accumulate macros that allow overflow in the addition (ie, no asserts in debug mode)*/
#undef silk_MLA_ovflw
#define silk_MLA_ovflw silk_MLA
#undef silk_SMLABB_ovflw
#define silk_SMLABB_ovflw silk_SMLABB
#undef silk_SMLABT_ovflw
#define silk_SMLABT_ovflw silk_SMLABT
#undef silk_SMLATT_ovflw
#define silk_SMLATT_ovflw silk_SMLATT
#undef silk_SMLAWB_ovflw
#define silk_SMLAWB_ovflw silk_SMLAWB
#undef silk_SMLAWT_ovflw
#define silk_SMLAWT_ovflw silk_SMLAWT
#undef silk_SMULL
static OPUS_INLINE opus_int64 silk_SMULL(opus_int32 a32, opus_int32 b32){
opus_int64 ret;
ops_count += 8;
ret = ((opus_int64)(a32) * /*(opus_int64)*/(b32));
return ret;
}
#undef silk_SMLAL
static OPUS_INLINE opus_int64 silk_SMLAL(opus_int64 a64, opus_int32 b32, opus_int32 c32){
opus_int64 ret;
ops_count += 8;
ret = a64 + ((opus_int64)(b32) * /*(opus_int64)*/(c32));
return ret;
}
#undef silk_SMLALBB
static OPUS_INLINE opus_int64 silk_SMLALBB(opus_int64 a64, opus_int16 b16, opus_int16 c16){
opus_int64 ret;
ops_count += 4;
ret = a64 + ((opus_int64)(b16) * /*(opus_int64)*/(c16));
return ret;
}
#undef SigProcFIX_CLZ16
static OPUS_INLINE opus_int32 SigProcFIX_CLZ16(opus_int16 in16)
{
opus_int32 out32 = 0;
ops_count += 10;
if( in16 == 0 ) {
return 16;
}
/* test nibbles */
if( in16 & 0xFF00 ) {
if( in16 & 0xF000 ) {
in16 >>= 12;
} else {
out32 += 4;
in16 >>= 8;
}
} else {
if( in16 & 0xFFF0 ) {
out32 += 8;
in16 >>= 4;
} else {
out32 += 12;
}
}
/* test bits and return */
if( in16 & 0xC ) {
if( in16 & 0x8 )
return out32 + 0;
else
return out32 + 1;
} else {
if( in16 & 0xE )
return out32 + 2;
else
return out32 + 3;
}
}
#undef SigProcFIX_CLZ32
static OPUS_INLINE opus_int32 SigProcFIX_CLZ32(opus_int32 in32)
{
/* test highest 16 bits and convert to opus_int16 */
ops_count += 2;
if( in32 & 0xFFFF0000 ) {
return SigProcFIX_CLZ16((opus_int16)(in32 >> 16));
} else {
return SigProcFIX_CLZ16((opus_int16)in32) + 16;
}
}
#undef silk_DIV32
static OPUS_INLINE opus_int32 silk_DIV32(opus_int32 a32, opus_int32 b32){
ops_count += 64;
return a32 / b32;
}
#undef silk_DIV32_16
static OPUS_INLINE opus_int32 silk_DIV32_16(opus_int32 a32, opus_int32 b32){
ops_count += 32;
return a32 / b32;
}
#undef silk_SAT8
static OPUS_INLINE opus_int8 silk_SAT8(opus_int64 a){
opus_int8 tmp;
ops_count += 1;
tmp = (opus_int8)((a) > silk_int8_MAX ? silk_int8_MAX : \
((a) < silk_int8_MIN ? silk_int8_MIN : (a)));
return(tmp);
}
#undef silk_SAT16
static OPUS_INLINE opus_int16 silk_SAT16(opus_int64 a){
opus_int16 tmp;
ops_count += 1;
tmp = (opus_int16)((a) > silk_int16_MAX ? silk_int16_MAX : \
((a) < silk_int16_MIN ? silk_int16_MIN : (a)));
return(tmp);
}
#undef silk_SAT32
static OPUS_INLINE opus_int32 silk_SAT32(opus_int64 a){
opus_int32 tmp;
ops_count += 1;
tmp = (opus_int32)((a) > silk_int32_MAX ? silk_int32_MAX : \
((a) < silk_int32_MIN ? silk_int32_MIN : (a)));
return(tmp);
}
#undef silk_POS_SAT32
static OPUS_INLINE opus_int32 silk_POS_SAT32(opus_int64 a){
opus_int32 tmp;
ops_count += 1;
tmp = (opus_int32)((a) > silk_int32_MAX ? silk_int32_MAX : (a));
return(tmp);
}
#undef silk_ADD_POS_SAT8
static OPUS_INLINE opus_int8 silk_ADD_POS_SAT8(opus_int64 a, opus_int64 b){
opus_int8 tmp;
ops_count += 1;
tmp = (opus_int8)((((a)+(b)) & 0x80) ? silk_int8_MAX : ((a)+(b)));
return(tmp);
}
#undef silk_ADD_POS_SAT16
static OPUS_INLINE opus_int16 silk_ADD_POS_SAT16(opus_int64 a, opus_int64 b){
opus_int16 tmp;
ops_count += 1;
tmp = (opus_int16)((((a)+(b)) & 0x8000) ? silk_int16_MAX : ((a)+(b)));
return(tmp);
}
#undef silk_ADD_POS_SAT32
static OPUS_INLINE opus_int32 silk_ADD_POS_SAT32(opus_int64 a, opus_int64 b){
opus_int32 tmp;
ops_count += 1;
tmp = (opus_int32)((((a)+(b)) & 0x80000000) ? silk_int32_MAX : ((a)+(b)));
return(tmp);
}
#undef silk_ADD_POS_SAT64
static OPUS_INLINE opus_int64 silk_ADD_POS_SAT64(opus_int64 a, opus_int64 b){
opus_int64 tmp;
ops_count += 1;
tmp = ((((a)+(b)) & 0x8000000000000000LL) ? silk_int64_MAX : ((a)+(b)));
return(tmp);
}
#undef silk_LSHIFT8
static OPUS_INLINE opus_int8 silk_LSHIFT8(opus_int8 a, opus_int32 shift){
opus_int8 ret;
ops_count += 1;
ret = a << shift;
return ret;
}
#undef silk_LSHIFT16
static OPUS_INLINE opus_int16 silk_LSHIFT16(opus_int16 a, opus_int32 shift){
opus_int16 ret;
ops_count += 1;
ret = a << shift;
return ret;
}
#undef silk_LSHIFT32
static OPUS_INLINE opus_int32 silk_LSHIFT32(opus_int32 a, opus_int32 shift){
opus_int32 ret;
ops_count += 1;
ret = a << shift;
return ret;
}
#undef silk_LSHIFT64
static OPUS_INLINE opus_int64 silk_LSHIFT64(opus_int64 a, opus_int shift){
ops_count += 1;
return a << shift;
}
#undef silk_LSHIFT_ovflw
static OPUS_INLINE opus_int32 silk_LSHIFT_ovflw(opus_int32 a, opus_int32 shift){
ops_count += 1;
return a << shift;
}
#undef silk_LSHIFT_uint
static OPUS_INLINE opus_uint32 silk_LSHIFT_uint(opus_uint32 a, opus_int32 shift){
opus_uint32 ret;
ops_count += 1;
ret = a << shift;
return ret;
}
#undef silk_RSHIFT8
static OPUS_INLINE opus_int8 silk_RSHIFT8(opus_int8 a, opus_int32 shift){
ops_count += 1;
return a >> shift;
}
#undef silk_RSHIFT16
static OPUS_INLINE opus_int16 silk_RSHIFT16(opus_int16 a, opus_int32 shift){
ops_count += 1;
return a >> shift;
}
#undef silk_RSHIFT32
static OPUS_INLINE opus_int32 silk_RSHIFT32(opus_int32 a, opus_int32 shift){
ops_count += 1;
return a >> shift;
}
#undef silk_RSHIFT64
static OPUS_INLINE opus_int64 silk_RSHIFT64(opus_int64 a, opus_int64 shift){
ops_count += 1;
return a >> shift;
}
#undef silk_RSHIFT_uint
static OPUS_INLINE opus_uint32 silk_RSHIFT_uint(opus_uint32 a, opus_int32 shift){
ops_count += 1;
return a >> shift;
}
#undef silk_ADD_LSHIFT
static OPUS_INLINE opus_int32 silk_ADD_LSHIFT(opus_int32 a, opus_int32 b, opus_int32 shift){
opus_int32 ret;
ops_count += 1;
ret = a + (b << shift);
return ret; /* shift >= 0*/
}
#undef silk_ADD_LSHIFT32
static OPUS_INLINE opus_int32 silk_ADD_LSHIFT32(opus_int32 a, opus_int32 b, opus_int32 shift){
opus_int32 ret;
ops_count += 1;
ret = a + (b << shift);
return ret; /* shift >= 0*/
}
#undef silk_ADD_LSHIFT_uint
static OPUS_INLINE opus_uint32 silk_ADD_LSHIFT_uint(opus_uint32 a, opus_uint32 b, opus_int32 shift){
opus_uint32 ret;
ops_count += 1;
ret = a + (b << shift);
return ret; /* shift >= 0*/
}
#undef silk_ADD_RSHIFT
static OPUS_INLINE opus_int32 silk_ADD_RSHIFT(opus_int32 a, opus_int32 b, opus_int32 shift){
opus_int32 ret;
ops_count += 1;
ret = a + (b >> shift);
return ret; /* shift > 0*/
}
#undef silk_ADD_RSHIFT32
static OPUS_INLINE opus_int32 silk_ADD_RSHIFT32(opus_int32 a, opus_int32 b, opus_int32 shift){
opus_int32 ret;
ops_count += 1;
ret = a + (b >> shift);
return ret; /* shift > 0*/
}
#undef silk_ADD_RSHIFT_uint
static OPUS_INLINE opus_uint32 silk_ADD_RSHIFT_uint(opus_uint32 a, opus_uint32 b, opus_int32 shift){
opus_uint32 ret;
ops_count += 1;
ret = a + (b >> shift);
return ret; /* shift > 0*/
}
#undef silk_SUB_LSHIFT32
static OPUS_INLINE opus_int32 silk_SUB_LSHIFT32(opus_int32 a, opus_int32 b, opus_int32 shift){
opus_int32 ret;
ops_count += 1;
ret = a - (b << shift);
return ret; /* shift >= 0*/
}
#undef silk_SUB_RSHIFT32
static OPUS_INLINE opus_int32 silk_SUB_RSHIFT32(opus_int32 a, opus_int32 b, opus_int32 shift){
opus_int32 ret;
ops_count += 1;
ret = a - (b >> shift);
return ret; /* shift > 0*/
}
#undef silk_RSHIFT_ROUND
static OPUS_INLINE opus_int32 silk_RSHIFT_ROUND(opus_int32 a, opus_int32 shift){
opus_int32 ret;
ops_count += 3;
ret = shift == 1 ? (a >> 1) + (a & 1) : ((a >> (shift - 1)) + 1) >> 1;
return ret;
}
#undef silk_RSHIFT_ROUND64
static OPUS_INLINE opus_int64 silk_RSHIFT_ROUND64(opus_int64 a, opus_int32 shift){
opus_int64 ret;
ops_count += 6;
ret = shift == 1 ? (a >> 1) + (a & 1) : ((a >> (shift - 1)) + 1) >> 1;
return ret;
}
#undef silk_abs_int64
static OPUS_INLINE opus_int64 silk_abs_int64(opus_int64 a){
ops_count += 1;
return (((a) > 0) ? (a) : -(a)); /* Be careful, silk_abs returns wrong when input equals to silk_intXX_MIN*/
}
#undef silk_abs_int32
static OPUS_INLINE opus_int32 silk_abs_int32(opus_int32 a){
ops_count += 1;
return silk_abs(a);
}
#undef silk_min
static silk_min(a, b){
ops_count += 1;
return (((a) < (b)) ? (a) : (b));
}
#undef silk_max
static silk_max(a, b){
ops_count += 1;
return (((a) > (b)) ? (a) : (b));
}
#undef silk_sign
static silk_sign(a){
ops_count += 1;
return ((a) > 0 ? 1 : ( (a) < 0 ? -1 : 0 ));
}
#undef silk_ADD16
static OPUS_INLINE opus_int16 silk_ADD16(opus_int16 a, opus_int16 b){
opus_int16 ret;
ops_count += 1;
ret = a + b;
return ret;
}
#undef silk_ADD32
static OPUS_INLINE opus_int32 silk_ADD32(opus_int32 a, opus_int32 b){
opus_int32 ret;
ops_count += 1;
ret = a + b;
return ret;
}
#undef silk_ADD64
static OPUS_INLINE opus_int64 silk_ADD64(opus_int64 a, opus_int64 b){
opus_int64 ret;
ops_count += 2;
ret = a + b;
return ret;
}
#undef silk_SUB16
static OPUS_INLINE opus_int16 silk_SUB16(opus_int16 a, opus_int16 b){
opus_int16 ret;
ops_count += 1;
ret = a - b;
return ret;
}
#undef silk_SUB32
static OPUS_INLINE opus_int32 silk_SUB32(opus_int32 a, opus_int32 b){
opus_int32 ret;
ops_count += 1;
ret = a - b;
return ret;
}
#undef silk_SUB64
static OPUS_INLINE opus_int64 silk_SUB64(opus_int64 a, opus_int64 b){
opus_int64 ret;
ops_count += 2;
ret = a - b;
return ret;
}
#undef silk_ADD_SAT16
static OPUS_INLINE opus_int16 silk_ADD_SAT16( opus_int16 a16, opus_int16 b16 ) {
opus_int16 res;
/* Nb will be counted in AKP_add32 and silk_SAT16*/
res = (opus_int16)silk_SAT16( silk_ADD32( (opus_int32)(a16), (b16) ) );
return res;
}
#undef silk_ADD_SAT32
static OPUS_INLINE opus_int32 silk_ADD_SAT32(opus_int32 a32, opus_int32 b32){
opus_int32 res;
ops_count += 1;
res = ((((a32) + (b32)) & 0x80000000) == 0 ? \
((((a32) & (b32)) & 0x80000000) != 0 ? silk_int32_MIN : (a32)+(b32)) : \
((((a32) | (b32)) & 0x80000000) == 0 ? silk_int32_MAX : (a32)+(b32)) );
return res;
}
#undef silk_ADD_SAT64
static OPUS_INLINE opus_int64 silk_ADD_SAT64( opus_int64 a64, opus_int64 b64 ) {
opus_int64 res;
ops_count += 1;
res = ((((a64) + (b64)) & 0x8000000000000000LL) == 0 ? \
((((a64) & (b64)) & 0x8000000000000000LL) != 0 ? silk_int64_MIN : (a64)+(b64)) : \
((((a64) | (b64)) & 0x8000000000000000LL) == 0 ? silk_int64_MAX : (a64)+(b64)) );
return res;
}
#undef silk_SUB_SAT16
static OPUS_INLINE opus_int16 silk_SUB_SAT16( opus_int16 a16, opus_int16 b16 ) {
opus_int16 res;
silk_assert(0);
/* Nb will be counted in sub-macros*/
res = (opus_int16)silk_SAT16( silk_SUB32( (opus_int32)(a16), (b16) ) );
return res;
}
#undef silk_SUB_SAT32
static OPUS_INLINE opus_int32 silk_SUB_SAT32( opus_int32 a32, opus_int32 b32 ) {
opus_int32 res;
ops_count += 1;
res = ((((a32)-(b32)) & 0x80000000) == 0 ? \
(( (a32) & ((b32)^0x80000000) & 0x80000000) ? silk_int32_MIN : (a32)-(b32)) : \
((((a32)^0x80000000) & (b32) & 0x80000000) ? silk_int32_MAX : (a32)-(b32)) );
return res;
}
#undef silk_SUB_SAT64
static OPUS_INLINE opus_int64 silk_SUB_SAT64( opus_int64 a64, opus_int64 b64 ) {
opus_int64 res;
ops_count += 1;
res = ((((a64)-(b64)) & 0x8000000000000000LL) == 0 ? \
(( (a64) & ((b64)^0x8000000000000000LL) & 0x8000000000000000LL) ? silk_int64_MIN : (a64)-(b64)) : \
((((a64)^0x8000000000000000LL) & (b64) & 0x8000000000000000LL) ? silk_int64_MAX : (a64)-(b64)) );
return res;
}
#undef silk_SMULWW
static OPUS_INLINE opus_int32 silk_SMULWW(opus_int32 a32, opus_int32 b32){
opus_int32 ret;
/* Nb will be counted in sub-macros*/
ret = silk_MLA(silk_SMULWB((a32), (b32)), (a32), silk_RSHIFT_ROUND((b32), 16));
return ret;
}
#undef silk_SMLAWW
static OPUS_INLINE opus_int32 silk_SMLAWW(opus_int32 a32, opus_int32 b32, opus_int32 c32){
opus_int32 ret;
/* Nb will be counted in sub-macros*/
ret = silk_MLA(silk_SMLAWB((a32), (b32), (c32)), (b32), silk_RSHIFT_ROUND((c32), 16));
return ret;
}
#undef silk_min_int
static OPUS_INLINE opus_int silk_min_int(opus_int a, opus_int b)
{
ops_count += 1;
return (((a) < (b)) ? (a) : (b));
}
#undef silk_min_16
static OPUS_INLINE opus_int16 silk_min_16(opus_int16 a, opus_int16 b)
{
ops_count += 1;
return (((a) < (b)) ? (a) : (b));
}
#undef silk_min_32
static OPUS_INLINE opus_int32 silk_min_32(opus_int32 a, opus_int32 b)
{
ops_count += 1;
return (((a) < (b)) ? (a) : (b));
}
#undef silk_min_64
static OPUS_INLINE opus_int64 silk_min_64(opus_int64 a, opus_int64 b)
{
ops_count += 1;
return (((a) < (b)) ? (a) : (b));
}
/* silk_min() versions with typecast in the function call */
#undef silk_max_int
static OPUS_INLINE opus_int silk_max_int(opus_int a, opus_int b)
{
ops_count += 1;
return (((a) > (b)) ? (a) : (b));
}
#undef silk_max_16
static OPUS_INLINE opus_int16 silk_max_16(opus_int16 a, opus_int16 b)
{
ops_count += 1;
return (((a) > (b)) ? (a) : (b));
}
#undef silk_max_32
static OPUS_INLINE opus_int32 silk_max_32(opus_int32 a, opus_int32 b)
{
ops_count += 1;
return (((a) > (b)) ? (a) : (b));
}
#undef silk_max_64
static OPUS_INLINE opus_int64 silk_max_64(opus_int64 a, opus_int64 b)
{
ops_count += 1;
return (((a) > (b)) ? (a) : (b));
}
#undef silk_LIMIT_int
static OPUS_INLINE opus_int silk_LIMIT_int(opus_int a, opus_int limit1, opus_int limit2)
{
opus_int ret;
ops_count += 6;
ret = ((limit1) > (limit2) ? ((a) > (limit1) ? (limit1) : ((a) < (limit2) ? (limit2) : (a))) \
: ((a) > (limit2) ? (limit2) : ((a) < (limit1) ? (limit1) : (a))));
return(ret);
}
#undef silk_LIMIT_16
static OPUS_INLINE opus_int16 silk_LIMIT_16(opus_int16 a, opus_int16 limit1, opus_int16 limit2)
{
opus_int16 ret;
ops_count += 6;
ret = ((limit1) > (limit2) ? ((a) > (limit1) ? (limit1) : ((a) < (limit2) ? (limit2) : (a))) \
: ((a) > (limit2) ? (limit2) : ((a) < (limit1) ? (limit1) : (a))));
return(ret);
}
#undef silk_LIMIT_32
static OPUS_INLINE opus_int silk_LIMIT_32(opus_int32 a, opus_int32 limit1, opus_int32 limit2)
{
opus_int32 ret;
ops_count += 6;
ret = ((limit1) > (limit2) ? ((a) > (limit1) ? (limit1) : ((a) < (limit2) ? (limit2) : (a))) \
: ((a) > (limit2) ? (limit2) : ((a) < (limit1) ? (limit1) : (a))));
return(ret);
}
#else
#define varDefine
#define silk_SaveCount()
#endif
#endif

952
src/engine/external/opus/silk/MacroDebug.h vendored Normal file
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@ -0,0 +1,952 @@
/***********************************************************************
Copyright (c) 2006-2011, Skype Limited. All rights reserved.
Copyright (C) 2012 Xiph.Org Foundation
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
- Neither the name of Internet Society, IETF or IETF Trust, nor the
names of specific contributors, may be used to endorse or promote
products derived from this software without specific prior written
permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
***********************************************************************/
#ifndef MACRO_DEBUG_H
#define MACRO_DEBUG_H
/* Redefine macro functions with extensive assertion in DEBUG mode.
As functions can't be undefined, this file can't work with SigProcFIX_MacroCount.h */
#if ( defined (FIXED_DEBUG) || ( 0 && defined (_DEBUG) ) ) && !defined (silk_MACRO_COUNT)
#undef silk_ADD16
#define silk_ADD16(a,b) silk_ADD16_((a), (b), __FILE__, __LINE__)
static OPUS_INLINE opus_int16 silk_ADD16_(opus_int16 a, opus_int16 b, char *file, int line){
opus_int16 ret;
ret = a + b;
if ( ret != silk_ADD_SAT16( a, b ) )
{
fprintf (stderr, "silk_ADD16(%d, %d) in %s: line %d\n", a, b, file, line);
#ifdef FIXED_DEBUG_ASSERT
silk_assert( 0 );
#endif
}
return ret;
}
#undef silk_ADD32
#define silk_ADD32(a,b) silk_ADD32_((a), (b), __FILE__, __LINE__)
static OPUS_INLINE opus_int32 silk_ADD32_(opus_int32 a, opus_int32 b, char *file, int line){
opus_int32 ret;
ret = a + b;
if ( ret != silk_ADD_SAT32( a, b ) )
{
fprintf (stderr, "silk_ADD32(%d, %d) in %s: line %d\n", a, b, file, line);
#ifdef FIXED_DEBUG_ASSERT
silk_assert( 0 );
#endif
}
return ret;
}
#undef silk_ADD64
#define silk_ADD64(a,b) silk_ADD64_((a), (b), __FILE__, __LINE__)
static OPUS_INLINE opus_int64 silk_ADD64_(opus_int64 a, opus_int64 b, char *file, int line){
opus_int64 ret;
ret = a + b;
if ( ret != silk_ADD_SAT64( a, b ) )
{
fprintf (stderr, "silk_ADD64(%lld, %lld) in %s: line %d\n", (long long)a, (long long)b, file, line);
#ifdef FIXED_DEBUG_ASSERT
silk_assert( 0 );
#endif
}
return ret;
}
#undef silk_SUB16
#define silk_SUB16(a,b) silk_SUB16_((a), (b), __FILE__, __LINE__)
static OPUS_INLINE opus_int16 silk_SUB16_(opus_int16 a, opus_int16 b, char *file, int line){
opus_int16 ret;
ret = a - b;
if ( ret != silk_SUB_SAT16( a, b ) )
{
fprintf (stderr, "silk_SUB16(%d, %d) in %s: line %d\n", a, b, file, line);
#ifdef FIXED_DEBUG_ASSERT
silk_assert( 0 );
#endif
}
return ret;
}
#undef silk_SUB32
#define silk_SUB32(a,b) silk_SUB32_((a), (b), __FILE__, __LINE__)
static OPUS_INLINE opus_int32 silk_SUB32_(opus_int32 a, opus_int32 b, char *file, int line){
opus_int32 ret;
ret = a - b;
if ( ret != silk_SUB_SAT32( a, b ) )
{
fprintf (stderr, "silk_SUB32(%d, %d) in %s: line %d\n", a, b, file, line);
#ifdef FIXED_DEBUG_ASSERT
silk_assert( 0 );
#endif
}
return ret;
}
#undef silk_SUB64
#define silk_SUB64(a,b) silk_SUB64_((a), (b), __FILE__, __LINE__)
static OPUS_INLINE opus_int64 silk_SUB64_(opus_int64 a, opus_int64 b, char *file, int line){
opus_int64 ret;
ret = a - b;
if ( ret != silk_SUB_SAT64( a, b ) )
{
fprintf (stderr, "silk_SUB64(%lld, %lld) in %s: line %d\n", (long long)a, (long long)b, file, line);
#ifdef FIXED_DEBUG_ASSERT
silk_assert( 0 );
#endif
}
return ret;
}
#undef silk_ADD_SAT16
#define silk_ADD_SAT16(a,b) silk_ADD_SAT16_((a), (b), __FILE__, __LINE__)
static OPUS_INLINE opus_int16 silk_ADD_SAT16_( opus_int16 a16, opus_int16 b16, char *file, int line) {
opus_int16 res;
res = (opus_int16)silk_SAT16( silk_ADD32( (opus_int32)(a16), (b16) ) );
if ( res != silk_SAT16( (opus_int32)a16 + (opus_int32)b16 ) )
{
fprintf (stderr, "silk_ADD_SAT16(%d, %d) in %s: line %d\n", a16, b16, file, line);
#ifdef FIXED_DEBUG_ASSERT
silk_assert( 0 );
#endif
}
return res;
}
#undef silk_ADD_SAT32
#define silk_ADD_SAT32(a,b) silk_ADD_SAT32_((a), (b), __FILE__, __LINE__)
static OPUS_INLINE opus_int32 silk_ADD_SAT32_(opus_int32 a32, opus_int32 b32, char *file, int line){
opus_int32 res;
res = ((((opus_uint32)(a32) + (opus_uint32)(b32)) & 0x80000000) == 0 ? \
((((a32) & (b32)) & 0x80000000) != 0 ? silk_int32_MIN : (a32)+(b32)) : \
((((a32) | (b32)) & 0x80000000) == 0 ? silk_int32_MAX : (a32)+(b32)) );
if ( res != silk_SAT32( (opus_int64)a32 + (opus_int64)b32 ) )
{
fprintf (stderr, "silk_ADD_SAT32(%d, %d) in %s: line %d\n", a32, b32, file, line);
#ifdef FIXED_DEBUG_ASSERT
silk_assert( 0 );
#endif
}
return res;
}
#undef silk_ADD_SAT64
#define silk_ADD_SAT64(a,b) silk_ADD_SAT64_((a), (b), __FILE__, __LINE__)
static OPUS_INLINE opus_int64 silk_ADD_SAT64_( opus_int64 a64, opus_int64 b64, char *file, int line) {
opus_int64 res;
int fail = 0;
res = ((((a64) + (b64)) & 0x8000000000000000LL) == 0 ? \
((((a64) & (b64)) & 0x8000000000000000LL) != 0 ? silk_int64_MIN : (a64)+(b64)) : \
((((a64) | (b64)) & 0x8000000000000000LL) == 0 ? silk_int64_MAX : (a64)+(b64)) );
if( res != a64 + b64 ) {
/* Check that we saturated to the correct extreme value */
if ( !(( res == silk_int64_MAX && ( ( a64 >> 1 ) + ( b64 >> 1 ) > ( silk_int64_MAX >> 3 ) ) ) ||
( res == silk_int64_MIN && ( ( a64 >> 1 ) + ( b64 >> 1 ) < ( silk_int64_MIN >> 3 ) ) ) ) )
{
fail = 1;
}
} else {
/* Saturation not necessary */
fail = res != a64 + b64;
}
if ( fail )
{
fprintf (stderr, "silk_ADD_SAT64(%lld, %lld) in %s: line %d\n", (long long)a64, (long long)b64, file, line);
#ifdef FIXED_DEBUG_ASSERT
silk_assert( 0 );
#endif
}
return res;
}
#undef silk_SUB_SAT16
#define silk_SUB_SAT16(a,b) silk_SUB_SAT16_((a), (b), __FILE__, __LINE__)
static OPUS_INLINE opus_int16 silk_SUB_SAT16_( opus_int16 a16, opus_int16 b16, char *file, int line ) {
opus_int16 res;
res = (opus_int16)silk_SAT16( silk_SUB32( (opus_int32)(a16), (b16) ) );
if ( res != silk_SAT16( (opus_int32)a16 - (opus_int32)b16 ) )
{
fprintf (stderr, "silk_SUB_SAT16(%d, %d) in %s: line %d\n", a16, b16, file, line);
#ifdef FIXED_DEBUG_ASSERT
silk_assert( 0 );
#endif
}
return res;
}
#undef silk_SUB_SAT32
#define silk_SUB_SAT32(a,b) silk_SUB_SAT32_((a), (b), __FILE__, __LINE__)
static OPUS_INLINE opus_int32 silk_SUB_SAT32_( opus_int32 a32, opus_int32 b32, char *file, int line ) {
opus_int32 res;
res = ((((opus_uint32)(a32)-(opus_uint32)(b32)) & 0x80000000) == 0 ? \
(( (a32) & ((b32)^0x80000000) & 0x80000000) ? silk_int32_MIN : (a32)-(b32)) : \
((((a32)^0x80000000) & (b32) & 0x80000000) ? silk_int32_MAX : (a32)-(b32)) );
if ( res != silk_SAT32( (opus_int64)a32 - (opus_int64)b32 ) )
{
fprintf (stderr, "silk_SUB_SAT32(%d, %d) in %s: line %d\n", a32, b32, file, line);
#ifdef FIXED_DEBUG_ASSERT
silk_assert( 0 );
#endif
}
return res;
}
#undef silk_SUB_SAT64
#define silk_SUB_SAT64(a,b) silk_SUB_SAT64_((a), (b), __FILE__, __LINE__)
static OPUS_INLINE opus_int64 silk_SUB_SAT64_( opus_int64 a64, opus_int64 b64, char *file, int line ) {
opus_int64 res;
int fail = 0;
res = ((((a64)-(b64)) & 0x8000000000000000LL) == 0 ? \
(( (a64) & ((b64)^0x8000000000000000LL) & 0x8000000000000000LL) ? silk_int64_MIN : (a64)-(b64)) : \
((((a64)^0x8000000000000000LL) & (b64) & 0x8000000000000000LL) ? silk_int64_MAX : (a64)-(b64)) );
if( res != a64 - b64 ) {
/* Check that we saturated to the correct extreme value */
if( !(( res == silk_int64_MAX && ( ( a64 >> 1 ) + ( b64 >> 1 ) > ( silk_int64_MAX >> 3 ) ) ) ||
( res == silk_int64_MIN && ( ( a64 >> 1 ) + ( b64 >> 1 ) < ( silk_int64_MIN >> 3 ) ) ) ))
{
fail = 1;
}
} else {
/* Saturation not necessary */
fail = res != a64 - b64;
}
if ( fail )
{
fprintf (stderr, "silk_SUB_SAT64(%lld, %lld) in %s: line %d\n", (long long)a64, (long long)b64, file, line);
#ifdef FIXED_DEBUG_ASSERT
silk_assert( 0 );
#endif
}
return res;
}
#undef silk_MUL
#define silk_MUL(a,b) silk_MUL_((a), (b), __FILE__, __LINE__)
static OPUS_INLINE opus_int32 silk_MUL_(opus_int32 a32, opus_int32 b32, char *file, int line){
opus_int32 ret;
opus_int64 ret64;
ret = a32 * b32;
ret64 = (opus_int64)a32 * (opus_int64)b32;
if ( (opus_int64)ret != ret64 )
{
fprintf (stderr, "silk_MUL(%d, %d) in %s: line %d\n", a32, b32, file, line);
#ifdef FIXED_DEBUG_ASSERT
silk_assert( 0 );
#endif
}
return ret;
}
#undef silk_MUL_uint
#define silk_MUL_uint(a,b) silk_MUL_uint_((a), (b), __FILE__, __LINE__)
static OPUS_INLINE opus_uint32 silk_MUL_uint_(opus_uint32 a32, opus_uint32 b32, char *file, int line){
opus_uint32 ret;
ret = a32 * b32;
if ( (opus_uint64)ret != (opus_uint64)a32 * (opus_uint64)b32 )
{
fprintf (stderr, "silk_MUL_uint(%u, %u) in %s: line %d\n", a32, b32, file, line);
#ifdef FIXED_DEBUG_ASSERT
silk_assert( 0 );
#endif
}
return ret;
}
#undef silk_MLA
#define silk_MLA(a,b,c) silk_MLA_((a), (b), (c), __FILE__, __LINE__)
static OPUS_INLINE opus_int32 silk_MLA_(opus_int32 a32, opus_int32 b32, opus_int32 c32, char *file, int line){
opus_int32 ret;
ret = a32 + b32 * c32;
if ( (opus_int64)ret != (opus_int64)a32 + (opus_int64)b32 * (opus_int64)c32 )
{
fprintf (stderr, "silk_MLA(%d, %d, %d) in %s: line %d\n", a32, b32, c32, file, line);
#ifdef FIXED_DEBUG_ASSERT
silk_assert( 0 );
#endif
}
return ret;
}
#undef silk_MLA_uint
#define silk_MLA_uint(a,b,c) silk_MLA_uint_((a), (b), (c), __FILE__, __LINE__)
static OPUS_INLINE opus_int32 silk_MLA_uint_(opus_uint32 a32, opus_uint32 b32, opus_uint32 c32, char *file, int line){
opus_uint32 ret;
ret = a32 + b32 * c32;
if ( (opus_int64)ret != (opus_int64)a32 + (opus_int64)b32 * (opus_int64)c32 )
{
fprintf (stderr, "silk_MLA_uint(%d, %d, %d) in %s: line %d\n", a32, b32, c32, file, line);
#ifdef FIXED_DEBUG_ASSERT
silk_assert( 0 );
#endif
}
return ret;
}
#undef silk_SMULWB
#define silk_SMULWB(a,b) silk_SMULWB_((a), (b), __FILE__, __LINE__)
static OPUS_INLINE opus_int32 silk_SMULWB_(opus_int32 a32, opus_int32 b32, char *file, int line){
opus_int32 ret;
ret = (a32 >> 16) * (opus_int32)((opus_int16)b32) + (((a32 & 0x0000FFFF) * (opus_int32)((opus_int16)b32)) >> 16);
if ( (opus_int64)ret != ((opus_int64)a32 * (opus_int16)b32) >> 16 )
{
fprintf (stderr, "silk_SMULWB(%d, %d) in %s: line %d\n", a32, b32, file, line);
#ifdef FIXED_DEBUG_ASSERT
silk_assert( 0 );
#endif
}
return ret;
}
#undef silk_SMLAWB
#define silk_SMLAWB(a,b,c) silk_SMLAWB_((a), (b), (c), __FILE__, __LINE__)
static OPUS_INLINE opus_int32 silk_SMLAWB_(opus_int32 a32, opus_int32 b32, opus_int32 c32, char *file, int line){
opus_int32 ret;
ret = silk_ADD32( a32, silk_SMULWB( b32, c32 ) );
if ( silk_ADD32( a32, silk_SMULWB( b32, c32 ) ) != silk_ADD_SAT32( a32, silk_SMULWB( b32, c32 ) ) )
{
fprintf (stderr, "silk_SMLAWB(%d, %d, %d) in %s: line %d\n", a32, b32, c32, file, line);
#ifdef FIXED_DEBUG_ASSERT
silk_assert( 0 );
#endif
}
return ret;
}
#undef silk_SMULWT
#define silk_SMULWT(a,b) silk_SMULWT_((a), (b), __FILE__, __LINE__)
static OPUS_INLINE opus_int32 silk_SMULWT_(opus_int32 a32, opus_int32 b32, char *file, int line){
opus_int32 ret;
ret = (a32 >> 16) * (b32 >> 16) + (((a32 & 0x0000FFFF) * (b32 >> 16)) >> 16);
if ( (opus_int64)ret != ((opus_int64)a32 * (b32 >> 16)) >> 16 )
{
fprintf (stderr, "silk_SMULWT(%d, %d) in %s: line %d\n", a32, b32, file, line);
#ifdef FIXED_DEBUG_ASSERT
silk_assert( 0 );
#endif
}
return ret;
}
#undef silk_SMLAWT
#define silk_SMLAWT(a,b,c) silk_SMLAWT_((a), (b), (c), __FILE__, __LINE__)
static OPUS_INLINE opus_int32 silk_SMLAWT_(opus_int32 a32, opus_int32 b32, opus_int32 c32, char *file, int line){
opus_int32 ret;
ret = a32 + ((b32 >> 16) * (c32 >> 16)) + (((b32 & 0x0000FFFF) * ((c32 >> 16)) >> 16));
if ( (opus_int64)ret != (opus_int64)a32 + (((opus_int64)b32 * (c32 >> 16)) >> 16) )
{
fprintf (stderr, "silk_SMLAWT(%d, %d, %d) in %s: line %d\n", a32, b32, c32, file, line);
#ifdef FIXED_DEBUG_ASSERT
silk_assert( 0 );
#endif
}
return ret;
}
#undef silk_SMULL
#define silk_SMULL(a,b) silk_SMULL_((a), (b), __FILE__, __LINE__)
static OPUS_INLINE opus_int64 silk_SMULL_(opus_int64 a64, opus_int64 b64, char *file, int line){
opus_int64 ret64;
int fail = 0;
ret64 = a64 * b64;
if( b64 != 0 ) {
fail = a64 != (ret64 / b64);
} else if( a64 != 0 ) {
fail = b64 != (ret64 / a64);
}
if ( fail )
{
fprintf (stderr, "silk_SMULL(%lld, %lld) in %s: line %d\n", (long long)a64, (long long)b64, file, line);
#ifdef FIXED_DEBUG_ASSERT
silk_assert( 0 );
#endif
}
return ret64;
}
/* no checking needed for silk_SMULBB */
#undef silk_SMLABB
#define silk_SMLABB(a,b,c) silk_SMLABB_((a), (b), (c), __FILE__, __LINE__)
static OPUS_INLINE opus_int32 silk_SMLABB_(opus_int32 a32, opus_int32 b32, opus_int32 c32, char *file, int line){
opus_int32 ret;
ret = a32 + (opus_int32)((opus_int16)b32) * (opus_int32)((opus_int16)c32);
if ( (opus_int64)ret != (opus_int64)a32 + (opus_int64)b32 * (opus_int16)c32 )
{
fprintf (stderr, "silk_SMLABB(%d, %d, %d) in %s: line %d\n", a32, b32, c32, file, line);
#ifdef FIXED_DEBUG_ASSERT
silk_assert( 0 );
#endif
}
return ret;
}
/* no checking needed for silk_SMULBT */
#undef silk_SMLABT
#define silk_SMLABT(a,b,c) silk_SMLABT_((a), (b), (c), __FILE__, __LINE__)
static OPUS_INLINE opus_int32 silk_SMLABT_(opus_int32 a32, opus_int32 b32, opus_int32 c32, char *file, int line){
opus_int32 ret;
ret = a32 + ((opus_int32)((opus_int16)b32)) * (c32 >> 16);
if ( (opus_int64)ret != (opus_int64)a32 + (opus_int64)b32 * (c32 >> 16) )
{
fprintf (stderr, "silk_SMLABT(%d, %d, %d) in %s: line %d\n", a32, b32, c32, file, line);
#ifdef FIXED_DEBUG_ASSERT
silk_assert( 0 );
#endif
}
return ret;
}
/* no checking needed for silk_SMULTT */
#undef silk_SMLATT
#define silk_SMLATT(a,b,c) silk_SMLATT_((a), (b), (c), __FILE__, __LINE__)
static OPUS_INLINE opus_int32 silk_SMLATT_(opus_int32 a32, opus_int32 b32, opus_int32 c32, char *file, int line){
opus_int32 ret;
ret = a32 + (b32 >> 16) * (c32 >> 16);
if ( (opus_int64)ret != (opus_int64)a32 + (b32 >> 16) * (c32 >> 16) )
{
fprintf (stderr, "silk_SMLATT(%d, %d, %d) in %s: line %d\n", a32, b32, c32, file, line);
#ifdef FIXED_DEBUG_ASSERT
silk_assert( 0 );
#endif
}
return ret;
}
#undef silk_SMULWW
#define silk_SMULWW(a,b) silk_SMULWW_((a), (b), __FILE__, __LINE__)
static OPUS_INLINE opus_int32 silk_SMULWW_(opus_int32 a32, opus_int32 b32, char *file, int line){
opus_int32 ret, tmp1, tmp2;
opus_int64 ret64;
int fail = 0;
ret = silk_SMULWB( a32, b32 );
tmp1 = silk_RSHIFT_ROUND( b32, 16 );
tmp2 = silk_MUL( a32, tmp1 );
fail |= (opus_int64)tmp2 != (opus_int64) a32 * (opus_int64) tmp1;
tmp1 = ret;
ret = silk_ADD32( tmp1, tmp2 );
fail |= silk_ADD32( tmp1, tmp2 ) != silk_ADD_SAT32( tmp1, tmp2 );
ret64 = silk_RSHIFT64( silk_SMULL( a32, b32 ), 16 );
fail |= (opus_int64)ret != ret64;
if ( fail )
{
fprintf (stderr, "silk_SMULWT(%d, %d) in %s: line %d\n", a32, b32, file, line);
#ifdef FIXED_DEBUG_ASSERT
silk_assert( 0 );
#endif
}
return ret;
}
#undef silk_SMLAWW
#define silk_SMLAWW(a,b,c) silk_SMLAWW_((a), (b), (c), __FILE__, __LINE__)
static OPUS_INLINE opus_int32 silk_SMLAWW_(opus_int32 a32, opus_int32 b32, opus_int32 c32, char *file, int line){
opus_int32 ret, tmp;
tmp = silk_SMULWW( b32, c32 );
ret = silk_ADD32( a32, tmp );
if ( ret != silk_ADD_SAT32( a32, tmp ) )
{
fprintf (stderr, "silk_SMLAWW(%d, %d, %d) in %s: line %d\n", a32, b32, c32, file, line);
#ifdef FIXED_DEBUG_ASSERT
silk_assert( 0 );
#endif
}
return ret;
}
/* Multiply-accumulate macros that allow overflow in the addition (ie, no asserts in debug mode) */
#undef silk_MLA_ovflw
#define silk_MLA_ovflw(a32, b32, c32) ((a32) + ((b32) * (c32)))
#undef silk_SMLABB_ovflw
#define silk_SMLABB_ovflw(a32, b32, c32) ((a32) + ((opus_int32)((opus_int16)(b32))) * (opus_int32)((opus_int16)(c32)))
/* no checking needed for silk_SMULL
no checking needed for silk_SMLAL
no checking needed for silk_SMLALBB
no checking needed for SigProcFIX_CLZ16
no checking needed for SigProcFIX_CLZ32*/
#undef silk_DIV32
#define silk_DIV32(a,b) silk_DIV32_((a), (b), __FILE__, __LINE__)
static OPUS_INLINE opus_int32 silk_DIV32_(opus_int32 a32, opus_int32 b32, char *file, int line){
if ( b32 == 0 )
{
fprintf (stderr, "silk_DIV32(%d, %d) in %s: line %d\n", a32, b32, file, line);
#ifdef FIXED_DEBUG_ASSERT
silk_assert( 0 );
#endif
}
return a32 / b32;
}
#undef silk_DIV32_16
#define silk_DIV32_16(a,b) silk_DIV32_16_((a), (b), __FILE__, __LINE__)
static OPUS_INLINE opus_int32 silk_DIV32_16_(opus_int32 a32, opus_int32 b32, char *file, int line){
int fail = 0;
fail |= b32 == 0;
fail |= b32 > silk_int16_MAX;
fail |= b32 < silk_int16_MIN;
if ( fail )
{
fprintf (stderr, "silk_DIV32_16(%d, %d) in %s: line %d\n", a32, b32, file, line);
#ifdef FIXED_DEBUG_ASSERT
silk_assert( 0 );
#endif
}
return a32 / b32;
}
/* no checking needed for silk_SAT8
no checking needed for silk_SAT16
no checking needed for silk_SAT32
no checking needed for silk_POS_SAT32
no checking needed for silk_ADD_POS_SAT8
no checking needed for silk_ADD_POS_SAT16
no checking needed for silk_ADD_POS_SAT32
no checking needed for silk_ADD_POS_SAT64 */
#undef silk_LSHIFT8
#define silk_LSHIFT8(a,b) silk_LSHIFT8_((a), (b), __FILE__, __LINE__)
static OPUS_INLINE opus_int8 silk_LSHIFT8_(opus_int8 a, opus_int32 shift, char *file, int line){
opus_int8 ret;
int fail = 0;
ret = a << shift;
fail |= shift < 0;
fail |= shift >= 8;
fail |= (opus_int64)ret != ((opus_int64)a) << shift;
if ( fail )
{
fprintf (stderr, "silk_LSHIFT8(%d, %d) in %s: line %d\n", a, shift, file, line);
#ifdef FIXED_DEBUG_ASSERT
silk_assert( 0 );
#endif
}
return ret;
}
#undef silk_LSHIFT16
#define silk_LSHIFT16(a,b) silk_LSHIFT16_((a), (b), __FILE__, __LINE__)
static OPUS_INLINE opus_int16 silk_LSHIFT16_(opus_int16 a, opus_int32 shift, char *file, int line){
opus_int16 ret;
int fail = 0;
ret = a << shift;
fail |= shift < 0;
fail |= shift >= 16;
fail |= (opus_int64)ret != ((opus_int64)a) << shift;
if ( fail )
{
fprintf (stderr, "silk_LSHIFT16(%d, %d) in %s: line %d\n", a, shift, file, line);
#ifdef FIXED_DEBUG_ASSERT
silk_assert( 0 );
#endif
}
return ret;
}
#undef silk_LSHIFT32
#define silk_LSHIFT32(a,b) silk_LSHIFT32_((a), (b), __FILE__, __LINE__)
static OPUS_INLINE opus_int32 silk_LSHIFT32_(opus_int32 a, opus_int32 shift, char *file, int line){
opus_int32 ret;
int fail = 0;
ret = a << shift;
fail |= shift < 0;
fail |= shift >= 32;
fail |= (opus_int64)ret != ((opus_int64)a) << shift;
if ( fail )
{
fprintf (stderr, "silk_LSHIFT32(%d, %d) in %s: line %d\n", a, shift, file, line);
#ifdef FIXED_DEBUG_ASSERT
silk_assert( 0 );
#endif
}
return ret;
}
#undef silk_LSHIFT64
#define silk_LSHIFT64(a,b) silk_LSHIFT64_((a), (b), __FILE__, __LINE__)
static OPUS_INLINE opus_int64 silk_LSHIFT64_(opus_int64 a, opus_int shift, char *file, int line){
opus_int64 ret;
int fail = 0;
ret = a << shift;
fail |= shift < 0;
fail |= shift >= 64;
fail |= (ret>>shift) != ((opus_int64)a);
if ( fail )
{
fprintf (stderr, "silk_LSHIFT64(%lld, %d) in %s: line %d\n", (long long)a, shift, file, line);
#ifdef FIXED_DEBUG_ASSERT
silk_assert( 0 );
#endif
}
return ret;
}
#undef silk_LSHIFT_ovflw
#define silk_LSHIFT_ovflw(a,b) silk_LSHIFT_ovflw_((a), (b), __FILE__, __LINE__)
static OPUS_INLINE opus_int32 silk_LSHIFT_ovflw_(opus_int32 a, opus_int32 shift, char *file, int line){
if ( (shift < 0) || (shift >= 32) ) /* no check for overflow */
{
fprintf (stderr, "silk_LSHIFT_ovflw(%d, %d) in %s: line %d\n", a, shift, file, line);
#ifdef FIXED_DEBUG_ASSERT
silk_assert( 0 );
#endif
}
return a << shift;
}
#undef silk_LSHIFT_uint
#define silk_LSHIFT_uint(a,b) silk_LSHIFT_uint_((a), (b), __FILE__, __LINE__)
static OPUS_INLINE opus_uint32 silk_LSHIFT_uint_(opus_uint32 a, opus_int32 shift, char *file, int line){
opus_uint32 ret;
ret = a << shift;
if ( (shift < 0) || ((opus_int64)ret != ((opus_int64)a) << shift))
{
fprintf (stderr, "silk_LSHIFT_uint(%u, %d) in %s: line %d\n", a, shift, file, line);
#ifdef FIXED_DEBUG_ASSERT
silk_assert( 0 );
#endif
}
return ret;
}
#undef silk_RSHIFT8
#define silk_RSHITF8(a,b) silk_RSHIFT8_((a), (b), __FILE__, __LINE__)
static OPUS_INLINE opus_int8 silk_RSHIFT8_(opus_int8 a, opus_int32 shift, char *file, int line){
if ( (shift < 0) || (shift>=8) )
{
fprintf (stderr, "silk_RSHITF8(%d, %d) in %s: line %d\n", a, shift, file, line);
#ifdef FIXED_DEBUG_ASSERT
silk_assert( 0 );
#endif
}
return a >> shift;
}
#undef silk_RSHIFT16
#define silk_RSHITF16(a,b) silk_RSHIFT16_((a), (b), __FILE__, __LINE__)
static OPUS_INLINE opus_int16 silk_RSHIFT16_(opus_int16 a, opus_int32 shift, char *file, int line){
if ( (shift < 0) || (shift>=16) )
{
fprintf (stderr, "silk_RSHITF16(%d, %d) in %s: line %d\n", a, shift, file, line);
#ifdef FIXED_DEBUG_ASSERT
silk_assert( 0 );
#endif
}
return a >> shift;
}
#undef silk_RSHIFT32
#define silk_RSHIFT32(a,b) silk_RSHIFT32_((a), (b), __FILE__, __LINE__)
static OPUS_INLINE opus_int32 silk_RSHIFT32_(opus_int32 a, opus_int32 shift, char *file, int line){
if ( (shift < 0) || (shift>=32) )
{
fprintf (stderr, "silk_RSHITF32(%d, %d) in %s: line %d\n", a, shift, file, line);
#ifdef FIXED_DEBUG_ASSERT
silk_assert( 0 );
#endif
}
return a >> shift;
}
#undef silk_RSHIFT64
#define silk_RSHIFT64(a,b) silk_RSHIFT64_((a), (b), __FILE__, __LINE__)
static OPUS_INLINE opus_int64 silk_RSHIFT64_(opus_int64 a, opus_int64 shift, char *file, int line){
if ( (shift < 0) || (shift>=64) )
{
fprintf (stderr, "silk_RSHITF64(%lld, %lld) in %s: line %d\n", (long long)a, (long long)shift, file, line);
#ifdef FIXED_DEBUG_ASSERT
silk_assert( 0 );
#endif
}
return a >> shift;
}
#undef silk_RSHIFT_uint
#define silk_RSHIFT_uint(a,b) silk_RSHIFT_uint_((a), (b), __FILE__, __LINE__)
static OPUS_INLINE opus_uint32 silk_RSHIFT_uint_(opus_uint32 a, opus_int32 shift, char *file, int line){
if ( (shift < 0) || (shift>32) )
{
fprintf (stderr, "silk_RSHIFT_uint(%u, %d) in %s: line %d\n", a, shift, file, line);
#ifdef FIXED_DEBUG_ASSERT
silk_assert( 0 );
#endif
}
return a >> shift;
}
#undef silk_ADD_LSHIFT
#define silk_ADD_LSHIFT(a,b,c) silk_ADD_LSHIFT_((a), (b), (c), __FILE__, __LINE__)
static OPUS_INLINE int silk_ADD_LSHIFT_(int a, int b, int shift, char *file, int line){
opus_int16 ret;
ret = a + (b << shift);
if ( (shift < 0) || (shift>15) || ((opus_int64)ret != (opus_int64)a + (((opus_int64)b) << shift)) )
{
fprintf (stderr, "silk_ADD_LSHIFT(%d, %d, %d) in %s: line %d\n", a, b, shift, file, line);
#ifdef FIXED_DEBUG_ASSERT
silk_assert( 0 );
#endif
}
return ret; /* shift >= 0 */
}
#undef silk_ADD_LSHIFT32
#define silk_ADD_LSHIFT32(a,b,c) silk_ADD_LSHIFT32_((a), (b), (c), __FILE__, __LINE__)
static OPUS_INLINE opus_int32 silk_ADD_LSHIFT32_(opus_int32 a, opus_int32 b, opus_int32 shift, char *file, int line){
opus_int32 ret;
ret = a + (b << shift);
if ( (shift < 0) || (shift>31) || ((opus_int64)ret != (opus_int64)a + (((opus_int64)b) << shift)) )
{
fprintf (stderr, "silk_ADD_LSHIFT32(%d, %d, %d) in %s: line %d\n", a, b, shift, file, line);
#ifdef FIXED_DEBUG_ASSERT
silk_assert( 0 );
#endif
}
return ret; /* shift >= 0 */
}
#undef silk_ADD_LSHIFT_uint
#define silk_ADD_LSHIFT_uint(a,b,c) silk_ADD_LSHIFT_uint_((a), (b), (c), __FILE__, __LINE__)
static OPUS_INLINE opus_uint32 silk_ADD_LSHIFT_uint_(opus_uint32 a, opus_uint32 b, opus_int32 shift, char *file, int line){
opus_uint32 ret;
ret = a + (b << shift);
if ( (shift < 0) || (shift>32) || ((opus_int64)ret != (opus_int64)a + (((opus_int64)b) << shift)) )
{
fprintf (stderr, "silk_ADD_LSHIFT_uint(%u, %u, %d) in %s: line %d\n", a, b, shift, file, line);
#ifdef FIXED_DEBUG_ASSERT
silk_assert( 0 );
#endif
}
return ret; /* shift >= 0 */
}
#undef silk_ADD_RSHIFT
#define silk_ADD_RSHIFT(a,b,c) silk_ADD_RSHIFT_((a), (b), (c), __FILE__, __LINE__)
static OPUS_INLINE int silk_ADD_RSHIFT_(int a, int b, int shift, char *file, int line){
opus_int16 ret;
ret = a + (b >> shift);
if ( (shift < 0) || (shift>15) || ((opus_int64)ret != (opus_int64)a + (((opus_int64)b) >> shift)) )
{
fprintf (stderr, "silk_ADD_RSHIFT(%d, %d, %d) in %s: line %d\n", a, b, shift, file, line);
#ifdef FIXED_DEBUG_ASSERT
silk_assert( 0 );
#endif
}
return ret; /* shift > 0 */
}
#undef silk_ADD_RSHIFT32
#define silk_ADD_RSHIFT32(a,b,c) silk_ADD_RSHIFT32_((a), (b), (c), __FILE__, __LINE__)
static OPUS_INLINE opus_int32 silk_ADD_RSHIFT32_(opus_int32 a, opus_int32 b, opus_int32 shift, char *file, int line){
opus_int32 ret;
ret = a + (b >> shift);
if ( (shift < 0) || (shift>31) || ((opus_int64)ret != (opus_int64)a + (((opus_int64)b) >> shift)) )
{
fprintf (stderr, "silk_ADD_RSHIFT32(%d, %d, %d) in %s: line %d\n", a, b, shift, file, line);
#ifdef FIXED_DEBUG_ASSERT
silk_assert( 0 );
#endif
}
return ret; /* shift > 0 */
}
#undef silk_ADD_RSHIFT_uint
#define silk_ADD_RSHIFT_uint(a,b,c) silk_ADD_RSHIFT_uint_((a), (b), (c), __FILE__, __LINE__)
static OPUS_INLINE opus_uint32 silk_ADD_RSHIFT_uint_(opus_uint32 a, opus_uint32 b, opus_int32 shift, char *file, int line){
opus_uint32 ret;
ret = a + (b >> shift);
if ( (shift < 0) || (shift>32) || ((opus_int64)ret != (opus_int64)a + (((opus_int64)b) >> shift)) )
{
fprintf (stderr, "silk_ADD_RSHIFT_uint(%u, %u, %d) in %s: line %d\n", a, b, shift, file, line);
#ifdef FIXED_DEBUG_ASSERT
silk_assert( 0 );
#endif
}
return ret; /* shift > 0 */
}
#undef silk_SUB_LSHIFT32
#define silk_SUB_LSHIFT32(a,b,c) silk_SUB_LSHIFT32_((a), (b), (c), __FILE__, __LINE__)
static OPUS_INLINE opus_int32 silk_SUB_LSHIFT32_(opus_int32 a, opus_int32 b, opus_int32 shift, char *file, int line){
opus_int32 ret;
ret = a - (b << shift);
if ( (shift < 0) || (shift>31) || ((opus_int64)ret != (opus_int64)a - (((opus_int64)b) << shift)) )
{
fprintf (stderr, "silk_SUB_LSHIFT32(%d, %d, %d) in %s: line %d\n", a, b, shift, file, line);
#ifdef FIXED_DEBUG_ASSERT
silk_assert( 0 );
#endif
}
return ret; /* shift >= 0 */
}
#undef silk_SUB_RSHIFT32
#define silk_SUB_RSHIFT32(a,b,c) silk_SUB_RSHIFT32_((a), (b), (c), __FILE__, __LINE__)
static OPUS_INLINE opus_int32 silk_SUB_RSHIFT32_(opus_int32 a, opus_int32 b, opus_int32 shift, char *file, int line){
opus_int32 ret;
ret = a - (b >> shift);
if ( (shift < 0) || (shift>31) || ((opus_int64)ret != (opus_int64)a - (((opus_int64)b) >> shift)) )
{
fprintf (stderr, "silk_SUB_RSHIFT32(%d, %d, %d) in %s: line %d\n", a, b, shift, file, line);
#ifdef FIXED_DEBUG_ASSERT
silk_assert( 0 );
#endif
}
return ret; /* shift > 0 */
}
#undef silk_RSHIFT_ROUND
#define silk_RSHIFT_ROUND(a,b) silk_RSHIFT_ROUND_((a), (b), __FILE__, __LINE__)
static OPUS_INLINE opus_int32 silk_RSHIFT_ROUND_(opus_int32 a, opus_int32 shift, char *file, int line){
opus_int32 ret;
ret = shift == 1 ? (a >> 1) + (a & 1) : ((a >> (shift - 1)) + 1) >> 1;
/* the marco definition can't handle a shift of zero */
if ( (shift <= 0) || (shift>31) || ((opus_int64)ret != ((opus_int64)a + ((opus_int64)1 << (shift - 1))) >> shift) )
{
fprintf (stderr, "silk_RSHIFT_ROUND(%d, %d) in %s: line %d\n", a, shift, file, line);
#ifdef FIXED_DEBUG_ASSERT
silk_assert( 0 );
#endif
}
return ret;
}
#undef silk_RSHIFT_ROUND64
#define silk_RSHIFT_ROUND64(a,b) silk_RSHIFT_ROUND64_((a), (b), __FILE__, __LINE__)
static OPUS_INLINE opus_int64 silk_RSHIFT_ROUND64_(opus_int64 a, opus_int32 shift, char *file, int line){
opus_int64 ret;
/* the marco definition can't handle a shift of zero */
if ( (shift <= 0) || (shift>=64) )
{
fprintf (stderr, "silk_RSHIFT_ROUND64(%lld, %d) in %s: line %d\n", (long long)a, shift, file, line);
#ifdef FIXED_DEBUG_ASSERT
silk_assert( 0 );
#endif
}
ret = shift == 1 ? (a >> 1) + (a & 1) : ((a >> (shift - 1)) + 1) >> 1;
return ret;
}
/* silk_abs is used on floats also, so doesn't work... */
/*#undef silk_abs
static OPUS_INLINE opus_int32 silk_abs(opus_int32 a){
silk_assert(a != 0x80000000);
return (((a) > 0) ? (a) : -(a)); // Be careful, silk_abs returns wrong when input equals to silk_intXX_MIN
}*/
#undef silk_abs_int64
#define silk_abs_int64(a) silk_abs_int64_((a), __FILE__, __LINE__)
static OPUS_INLINE opus_int64 silk_abs_int64_(opus_int64 a, char *file, int line){
if ( a == silk_int64_MIN )
{
fprintf (stderr, "silk_abs_int64(%lld) in %s: line %d\n", (long long)a, file, line);
#ifdef FIXED_DEBUG_ASSERT
silk_assert( 0 );
#endif
}
return (((a) > 0) ? (a) : -(a)); /* Be careful, silk_abs returns wrong when input equals to silk_intXX_MIN */
}
#undef silk_abs_int32
#define silk_abs_int32(a) silk_abs_int32_((a), __FILE__, __LINE__)
static OPUS_INLINE opus_int32 silk_abs_int32_(opus_int32 a, char *file, int line){
if ( a == silk_int32_MIN )
{
fprintf (stderr, "silk_abs_int32(%d) in %s: line %d\n", a, file, line);
#ifdef FIXED_DEBUG_ASSERT
silk_assert( 0 );
#endif
}
return silk_abs(a);
}
#undef silk_CHECK_FIT8
#define silk_CHECK_FIT8(a) silk_CHECK_FIT8_((a), __FILE__, __LINE__)
static OPUS_INLINE opus_int8 silk_CHECK_FIT8_( opus_int64 a, char *file, int line ){
opus_int8 ret;
ret = (opus_int8)a;
if ( (opus_int64)ret != a )
{
fprintf (stderr, "silk_CHECK_FIT8(%lld) in %s: line %d\n", (long long)a, file, line);
#ifdef FIXED_DEBUG_ASSERT
silk_assert( 0 );
#endif
}
return( ret );
}
#undef silk_CHECK_FIT16
#define silk_CHECK_FIT16(a) silk_CHECK_FIT16_((a), __FILE__, __LINE__)
static OPUS_INLINE opus_int16 silk_CHECK_FIT16_( opus_int64 a, char *file, int line ){
opus_int16 ret;
ret = (opus_int16)a;
if ( (opus_int64)ret != a )
{
fprintf (stderr, "silk_CHECK_FIT16(%lld) in %s: line %d\n", (long long)a, file, line);
#ifdef FIXED_DEBUG_ASSERT
silk_assert( 0 );
#endif
}
return( ret );
}
#undef silk_CHECK_FIT32
#define silk_CHECK_FIT32(a) silk_CHECK_FIT32_((a), __FILE__, __LINE__)
static OPUS_INLINE opus_int32 silk_CHECK_FIT32_( opus_int64 a, char *file, int line ){
opus_int32 ret;
ret = (opus_int32)a;
if ( (opus_int64)ret != a )
{
fprintf (stderr, "silk_CHECK_FIT32(%lld) in %s: line %d\n", (long long)a, file, line);
#ifdef FIXED_DEBUG_ASSERT
silk_assert( 0 );
#endif
}
return( ret );
}
/* no checking for silk_NSHIFT_MUL_32_32
no checking for silk_NSHIFT_MUL_16_16
no checking needed for silk_min
no checking needed for silk_max
no checking needed for silk_sign
*/
#endif
#endif /* MACRO_DEBUG_H */

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/***********************************************************************
Copyright (c) 2006-2011, Skype Limited. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
- Neither the name of Internet Society, IETF or IETF Trust, nor the
names of specific contributors, may be used to endorse or promote
products derived from this software without specific prior written
permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
***********************************************************************/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
/* conversion between prediction filter coefficients and LSFs */
/* order should be even */
/* a piecewise linear approximation maps LSF <-> cos(LSF) */
/* therefore the result is not accurate LSFs, but the two */
/* functions are accurate inverses of each other */
#include "SigProc_FIX.h"
#include "tables.h"
#define QA 16
/* helper function for NLSF2A(..) */
static OPUS_INLINE void silk_NLSF2A_find_poly(
opus_int32 *out, /* O intermediate polynomial, QA [dd+1] */
const opus_int32 *cLSF, /* I vector of interleaved 2*cos(LSFs), QA [d] */
opus_int dd /* I polynomial order (= 1/2 * filter order) */
)
{
opus_int k, n;
opus_int32 ftmp;
out[0] = silk_LSHIFT( 1, QA );
out[1] = -cLSF[0];
for( k = 1; k < dd; k++ ) {
ftmp = cLSF[2*k]; /* QA*/
out[k+1] = silk_LSHIFT( out[k-1], 1 ) - (opus_int32)silk_RSHIFT_ROUND64( silk_SMULL( ftmp, out[k] ), QA );
for( n = k; n > 1; n-- ) {
out[n] += out[n-2] - (opus_int32)silk_RSHIFT_ROUND64( silk_SMULL( ftmp, out[n-1] ), QA );
}
out[1] -= ftmp;
}
}
/* compute whitening filter coefficients from normalized line spectral frequencies */
void silk_NLSF2A(
opus_int16 *a_Q12, /* O monic whitening filter coefficients in Q12, [ d ] */
const opus_int16 *NLSF, /* I normalized line spectral frequencies in Q15, [ d ] */
const opus_int d /* I filter order (should be even) */
)
{
/* This ordering was found to maximize quality. It improves numerical accuracy of
silk_NLSF2A_find_poly() compared to "standard" ordering. */
static const unsigned char ordering16[16] = {
0, 15, 8, 7, 4, 11, 12, 3, 2, 13, 10, 5, 6, 9, 14, 1
};
static const unsigned char ordering10[10] = {
0, 9, 6, 3, 4, 5, 8, 1, 2, 7
};
const unsigned char *ordering;
opus_int k, i, dd;
opus_int32 cos_LSF_QA[ SILK_MAX_ORDER_LPC ];
opus_int32 P[ SILK_MAX_ORDER_LPC / 2 + 1 ], Q[ SILK_MAX_ORDER_LPC / 2 + 1 ];
opus_int32 Ptmp, Qtmp, f_int, f_frac, cos_val, delta;
opus_int32 a32_QA1[ SILK_MAX_ORDER_LPC ];
opus_int32 maxabs, absval, idx=0, sc_Q16;
silk_assert( LSF_COS_TAB_SZ_FIX == 128 );
silk_assert( d==10||d==16 );
/* convert LSFs to 2*cos(LSF), using piecewise linear curve from table */
ordering = d == 16 ? ordering16 : ordering10;
for( k = 0; k < d; k++ ) {
silk_assert(NLSF[k] >= 0 );
/* f_int on a scale 0-127 (rounded down) */
f_int = silk_RSHIFT( NLSF[k], 15 - 7 );
/* f_frac, range: 0..255 */
f_frac = NLSF[k] - silk_LSHIFT( f_int, 15 - 7 );
silk_assert(f_int >= 0);
silk_assert(f_int < LSF_COS_TAB_SZ_FIX );
/* Read start and end value from table */
cos_val = silk_LSFCosTab_FIX_Q12[ f_int ]; /* Q12 */
delta = silk_LSFCosTab_FIX_Q12[ f_int + 1 ] - cos_val; /* Q12, with a range of 0..200 */
/* Linear interpolation */
cos_LSF_QA[ordering[k]] = silk_RSHIFT_ROUND( silk_LSHIFT( cos_val, 8 ) + silk_MUL( delta, f_frac ), 20 - QA ); /* QA */
}
dd = silk_RSHIFT( d, 1 );
/* generate even and odd polynomials using convolution */
silk_NLSF2A_find_poly( P, &cos_LSF_QA[ 0 ], dd );
silk_NLSF2A_find_poly( Q, &cos_LSF_QA[ 1 ], dd );
/* convert even and odd polynomials to opus_int32 Q12 filter coefs */
for( k = 0; k < dd; k++ ) {
Ptmp = P[ k+1 ] + P[ k ];
Qtmp = Q[ k+1 ] - Q[ k ];
/* the Ptmp and Qtmp values at this stage need to fit in int32 */
a32_QA1[ k ] = -Qtmp - Ptmp; /* QA+1 */
a32_QA1[ d-k-1 ] = Qtmp - Ptmp; /* QA+1 */
}
/* Limit the maximum absolute value of the prediction coefficients, so that they'll fit in int16 */
for( i = 0; i < 10; i++ ) {
/* Find maximum absolute value and its index */
maxabs = 0;
for( k = 0; k < d; k++ ) {
absval = silk_abs( a32_QA1[k] );
if( absval > maxabs ) {
maxabs = absval;
idx = k;
}
}
maxabs = silk_RSHIFT_ROUND( maxabs, QA + 1 - 12 ); /* QA+1 -> Q12 */
if( maxabs > silk_int16_MAX ) {
/* Reduce magnitude of prediction coefficients */
maxabs = silk_min( maxabs, 163838 ); /* ( silk_int32_MAX >> 14 ) + silk_int16_MAX = 163838 */
sc_Q16 = SILK_FIX_CONST( 0.999, 16 ) - silk_DIV32( silk_LSHIFT( maxabs - silk_int16_MAX, 14 ),
silk_RSHIFT32( silk_MUL( maxabs, idx + 1), 2 ) );
silk_bwexpander_32( a32_QA1, d, sc_Q16 );
} else {
break;
}
}
if( i == 10 ) {
/* Reached the last iteration, clip the coefficients */
for( k = 0; k < d; k++ ) {
a_Q12[ k ] = (opus_int16)silk_SAT16( silk_RSHIFT_ROUND( a32_QA1[ k ], QA + 1 - 12 ) ); /* QA+1 -> Q12 */
a32_QA1[ k ] = silk_LSHIFT( (opus_int32)a_Q12[ k ], QA + 1 - 12 );
}
} else {
for( k = 0; k < d; k++ ) {
a_Q12[ k ] = (opus_int16)silk_RSHIFT_ROUND( a32_QA1[ k ], QA + 1 - 12 ); /* QA+1 -> Q12 */
}
}
for( i = 0; i < MAX_LPC_STABILIZE_ITERATIONS; i++ ) {
if( silk_LPC_inverse_pred_gain( a_Q12, d ) < SILK_FIX_CONST( 1.0 / MAX_PREDICTION_POWER_GAIN, 30 ) ) {
/* Prediction coefficients are (too close to) unstable; apply bandwidth expansion */
/* on the unscaled coefficients, convert to Q12 and measure again */
silk_bwexpander_32( a32_QA1, d, 65536 - silk_LSHIFT( 2, i ) );
for( k = 0; k < d; k++ ) {
a_Q12[ k ] = (opus_int16)silk_RSHIFT_ROUND( a32_QA1[ k ], QA + 1 - 12 ); /* QA+1 -> Q12 */
}
} else {
break;
}
}
}

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/***********************************************************************
Copyright (c) 2006-2011, Skype Limited. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
- Neither the name of Internet Society, IETF or IETF Trust, nor the
names of specific contributors, may be used to endorse or promote
products derived from this software without specific prior written
permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
***********************************************************************/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "main.h"
/* Compute quantization errors for an LPC_order element input vector for a VQ codebook */
void silk_NLSF_VQ(
opus_int32 err_Q26[], /* O Quantization errors [K] */
const opus_int16 in_Q15[], /* I Input vectors to be quantized [LPC_order] */
const opus_uint8 pCB_Q8[], /* I Codebook vectors [K*LPC_order] */
const opus_int K, /* I Number of codebook vectors */
const opus_int LPC_order /* I Number of LPCs */
)
{
opus_int i, m;
opus_int32 diff_Q15, sum_error_Q30, sum_error_Q26;
silk_assert( LPC_order <= 16 );
silk_assert( ( LPC_order & 1 ) == 0 );
/* Loop over codebook */
for( i = 0; i < K; i++ ) {
sum_error_Q26 = 0;
for( m = 0; m < LPC_order; m += 2 ) {
/* Compute weighted squared quantization error for index m */
diff_Q15 = silk_SUB_LSHIFT32( in_Q15[ m ], (opus_int32)*pCB_Q8++, 7 ); /* range: [ -32767 : 32767 ]*/
sum_error_Q30 = silk_SMULBB( diff_Q15, diff_Q15 );
/* Compute weighted squared quantization error for index m + 1 */
diff_Q15 = silk_SUB_LSHIFT32( in_Q15[m + 1], (opus_int32)*pCB_Q8++, 7 ); /* range: [ -32767 : 32767 ]*/
sum_error_Q30 = silk_SMLABB( sum_error_Q30, diff_Q15, diff_Q15 );
sum_error_Q26 = silk_ADD_RSHIFT32( sum_error_Q26, sum_error_Q30, 4 );
silk_assert( sum_error_Q26 >= 0 );
silk_assert( sum_error_Q30 >= 0 );
}
err_Q26[ i ] = sum_error_Q26;
}
}

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src/engine/external/opus/silk/NLSF_VQ_weights_laroia.c vendored Normal file
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/***********************************************************************
Copyright (c) 2006-2011, Skype Limited. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
- Neither the name of Internet Society, IETF or IETF Trust, nor the
names of specific contributors, may be used to endorse or promote
products derived from this software without specific prior written
permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
***********************************************************************/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "define.h"
#include "SigProc_FIX.h"
/*
R. Laroia, N. Phamdo and N. Farvardin, "Robust and Efficient Quantization of Speech LSP
Parameters Using Structured Vector Quantization", Proc. IEEE Int. Conf. Acoust., Speech,
Signal Processing, pp. 641-644, 1991.
*/
/* Laroia low complexity NLSF weights */
void silk_NLSF_VQ_weights_laroia(
opus_int16 *pNLSFW_Q_OUT, /* O Pointer to input vector weights [D] */
const opus_int16 *pNLSF_Q15, /* I Pointer to input vector [D] */
const opus_int D /* I Input vector dimension (even) */
)
{
opus_int k;
opus_int32 tmp1_int, tmp2_int;
silk_assert( D > 0 );
silk_assert( ( D & 1 ) == 0 );
/* First value */
tmp1_int = silk_max_int( pNLSF_Q15[ 0 ], 1 );
tmp1_int = silk_DIV32_16( (opus_int32)1 << ( 15 + NLSF_W_Q ), tmp1_int );
tmp2_int = silk_max_int( pNLSF_Q15[ 1 ] - pNLSF_Q15[ 0 ], 1 );
tmp2_int = silk_DIV32_16( (opus_int32)1 << ( 15 + NLSF_W_Q ), tmp2_int );
pNLSFW_Q_OUT[ 0 ] = (opus_int16)silk_min_int( tmp1_int + tmp2_int, silk_int16_MAX );
silk_assert( pNLSFW_Q_OUT[ 0 ] > 0 );
/* Main loop */
for( k = 1; k < D - 1; k += 2 ) {
tmp1_int = silk_max_int( pNLSF_Q15[ k + 1 ] - pNLSF_Q15[ k ], 1 );
tmp1_int = silk_DIV32_16( (opus_int32)1 << ( 15 + NLSF_W_Q ), tmp1_int );
pNLSFW_Q_OUT[ k ] = (opus_int16)silk_min_int( tmp1_int + tmp2_int, silk_int16_MAX );
silk_assert( pNLSFW_Q_OUT[ k ] > 0 );
tmp2_int = silk_max_int( pNLSF_Q15[ k + 2 ] - pNLSF_Q15[ k + 1 ], 1 );
tmp2_int = silk_DIV32_16( (opus_int32)1 << ( 15 + NLSF_W_Q ), tmp2_int );
pNLSFW_Q_OUT[ k + 1 ] = (opus_int16)silk_min_int( tmp1_int + tmp2_int, silk_int16_MAX );
silk_assert( pNLSFW_Q_OUT[ k + 1 ] > 0 );
}
/* Last value */
tmp1_int = silk_max_int( ( 1 << 15 ) - pNLSF_Q15[ D - 1 ], 1 );
tmp1_int = silk_DIV32_16( (opus_int32)1 << ( 15 + NLSF_W_Q ), tmp1_int );
pNLSFW_Q_OUT[ D - 1 ] = (opus_int16)silk_min_int( tmp1_int + tmp2_int, silk_int16_MAX );
silk_assert( pNLSFW_Q_OUT[ D - 1 ] > 0 );
}

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/***********************************************************************
Copyright (c) 2006-2011, Skype Limited. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
- Neither the name of Internet Society, IETF or IETF Trust, nor the
names of specific contributors, may be used to endorse or promote
products derived from this software without specific prior written
permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
***********************************************************************/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "main.h"
/* Predictive dequantizer for NLSF residuals */
static OPUS_INLINE void silk_NLSF_residual_dequant( /* O Returns RD value in Q30 */
opus_int16 x_Q10[], /* O Output [ order ] */
const opus_int8 indices[], /* I Quantization indices [ order ] */
const opus_uint8 pred_coef_Q8[], /* I Backward predictor coefs [ order ] */
const opus_int quant_step_size_Q16, /* I Quantization step size */
const opus_int16 order /* I Number of input values */
)
{
opus_int i, out_Q10, pred_Q10;
out_Q10 = 0;
for( i = order-1; i >= 0; i-- ) {
pred_Q10 = silk_RSHIFT( silk_SMULBB( out_Q10, (opus_int16)pred_coef_Q8[ i ] ), 8 );
out_Q10 = silk_LSHIFT( indices[ i ], 10 );
if( out_Q10 > 0 ) {
out_Q10 = silk_SUB16( out_Q10, SILK_FIX_CONST( NLSF_QUANT_LEVEL_ADJ, 10 ) );
} else if( out_Q10 < 0 ) {
out_Q10 = silk_ADD16( out_Q10, SILK_FIX_CONST( NLSF_QUANT_LEVEL_ADJ, 10 ) );
}
out_Q10 = silk_SMLAWB( pred_Q10, (opus_int32)out_Q10, quant_step_size_Q16 );
x_Q10[ i ] = out_Q10;
}
}
/***********************/
/* NLSF vector decoder */
/***********************/
void silk_NLSF_decode(
opus_int16 *pNLSF_Q15, /* O Quantized NLSF vector [ LPC_ORDER ] */
opus_int8 *NLSFIndices, /* I Codebook path vector [ LPC_ORDER + 1 ] */
const silk_NLSF_CB_struct *psNLSF_CB /* I Codebook object */
)
{
opus_int i;
opus_uint8 pred_Q8[ MAX_LPC_ORDER ];
opus_int16 ec_ix[ MAX_LPC_ORDER ];
opus_int16 res_Q10[ MAX_LPC_ORDER ];
opus_int16 W_tmp_QW[ MAX_LPC_ORDER ];
opus_int32 W_tmp_Q9, NLSF_Q15_tmp;
const opus_uint8 *pCB_element;
/* Decode first stage */
pCB_element = &psNLSF_CB->CB1_NLSF_Q8[ NLSFIndices[ 0 ] * psNLSF_CB->order ];
for( i = 0; i < psNLSF_CB->order; i++ ) {
pNLSF_Q15[ i ] = silk_LSHIFT( (opus_int16)pCB_element[ i ], 7 );
}
/* Unpack entropy table indices and predictor for current CB1 index */
silk_NLSF_unpack( ec_ix, pred_Q8, psNLSF_CB, NLSFIndices[ 0 ] );
/* Predictive residual dequantizer */
silk_NLSF_residual_dequant( res_Q10, &NLSFIndices[ 1 ], pred_Q8, psNLSF_CB->quantStepSize_Q16, psNLSF_CB->order );
/* Weights from codebook vector */
silk_NLSF_VQ_weights_laroia( W_tmp_QW, pNLSF_Q15, psNLSF_CB->order );
/* Apply inverse square-rooted weights and add to output */
for( i = 0; i < psNLSF_CB->order; i++ ) {
W_tmp_Q9 = silk_SQRT_APPROX( silk_LSHIFT( (opus_int32)W_tmp_QW[ i ], 18 - NLSF_W_Q ) );
NLSF_Q15_tmp = silk_ADD32( pNLSF_Q15[ i ], silk_DIV32_16( silk_LSHIFT( (opus_int32)res_Q10[ i ], 14 ), W_tmp_Q9 ) );
pNLSF_Q15[ i ] = (opus_int16)silk_LIMIT( NLSF_Q15_tmp, 0, 32767 );
}
/* NLSF stabilization */
silk_NLSF_stabilize( pNLSF_Q15, psNLSF_CB->deltaMin_Q15, psNLSF_CB->order );
}

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src/engine/external/opus/silk/NLSF_del_dec_quant.c vendored Normal file
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/***********************************************************************
Copyright (c) 2006-2011, Skype Limited. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
- Neither the name of Internet Society, IETF or IETF Trust, nor the
names of specific contributors, may be used to endorse or promote
products derived from this software without specific prior written
permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
***********************************************************************/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "main.h"
/* Delayed-decision quantizer for NLSF residuals */
opus_int32 silk_NLSF_del_dec_quant( /* O Returns RD value in Q25 */
opus_int8 indices[], /* O Quantization indices [ order ] */
const opus_int16 x_Q10[], /* I Input [ order ] */
const opus_int16 w_Q5[], /* I Weights [ order ] */
const opus_uint8 pred_coef_Q8[], /* I Backward predictor coefs [ order ] */
const opus_int16 ec_ix[], /* I Indices to entropy coding tables [ order ] */
const opus_uint8 ec_rates_Q5[], /* I Rates [] */
const opus_int quant_step_size_Q16, /* I Quantization step size */
const opus_int16 inv_quant_step_size_Q6, /* I Inverse quantization step size */
const opus_int32 mu_Q20, /* I R/D tradeoff */
const opus_int16 order /* I Number of input values */
)
{
opus_int i, j, nStates, ind_tmp, ind_min_max, ind_max_min, in_Q10, res_Q10;
opus_int pred_Q10, diff_Q10, out0_Q10, out1_Q10, rate0_Q5, rate1_Q5;
opus_int32 RD_tmp_Q25, min_Q25, min_max_Q25, max_min_Q25, pred_coef_Q16;
opus_int ind_sort[ NLSF_QUANT_DEL_DEC_STATES ];
opus_int8 ind[ NLSF_QUANT_DEL_DEC_STATES ][ MAX_LPC_ORDER ];
opus_int16 prev_out_Q10[ 2 * NLSF_QUANT_DEL_DEC_STATES ];
opus_int32 RD_Q25[ 2 * NLSF_QUANT_DEL_DEC_STATES ];
opus_int32 RD_min_Q25[ NLSF_QUANT_DEL_DEC_STATES ];
opus_int32 RD_max_Q25[ NLSF_QUANT_DEL_DEC_STATES ];
const opus_uint8 *rates_Q5;
silk_assert( (NLSF_QUANT_DEL_DEC_STATES & (NLSF_QUANT_DEL_DEC_STATES-1)) == 0 ); /* must be power of two */
nStates = 1;
RD_Q25[ 0 ] = 0;
prev_out_Q10[ 0 ] = 0;
for( i = order - 1; ; i-- ) {
rates_Q5 = &ec_rates_Q5[ ec_ix[ i ] ];
pred_coef_Q16 = silk_LSHIFT( (opus_int32)pred_coef_Q8[ i ], 8 );
in_Q10 = x_Q10[ i ];
for( j = 0; j < nStates; j++ ) {
pred_Q10 = silk_SMULWB( pred_coef_Q16, prev_out_Q10[ j ] );
res_Q10 = silk_SUB16( in_Q10, pred_Q10 );
ind_tmp = silk_SMULWB( (opus_int32)inv_quant_step_size_Q6, res_Q10 );
ind_tmp = silk_LIMIT( ind_tmp, -NLSF_QUANT_MAX_AMPLITUDE_EXT, NLSF_QUANT_MAX_AMPLITUDE_EXT-1 );
ind[ j ][ i ] = (opus_int8)ind_tmp;
/* compute outputs for ind_tmp and ind_tmp + 1 */
out0_Q10 = silk_LSHIFT( ind_tmp, 10 );
out1_Q10 = silk_ADD16( out0_Q10, 1024 );
if( ind_tmp > 0 ) {
out0_Q10 = silk_SUB16( out0_Q10, SILK_FIX_CONST( NLSF_QUANT_LEVEL_ADJ, 10 ) );
out1_Q10 = silk_SUB16( out1_Q10, SILK_FIX_CONST( NLSF_QUANT_LEVEL_ADJ, 10 ) );
} else if( ind_tmp == 0 ) {
out1_Q10 = silk_SUB16( out1_Q10, SILK_FIX_CONST( NLSF_QUANT_LEVEL_ADJ, 10 ) );
} else if( ind_tmp == -1 ) {
out0_Q10 = silk_ADD16( out0_Q10, SILK_FIX_CONST( NLSF_QUANT_LEVEL_ADJ, 10 ) );
} else {
out0_Q10 = silk_ADD16( out0_Q10, SILK_FIX_CONST( NLSF_QUANT_LEVEL_ADJ, 10 ) );
out1_Q10 = silk_ADD16( out1_Q10, SILK_FIX_CONST( NLSF_QUANT_LEVEL_ADJ, 10 ) );
}
out0_Q10 = silk_SMULWB( (opus_int32)out0_Q10, quant_step_size_Q16 );
out1_Q10 = silk_SMULWB( (opus_int32)out1_Q10, quant_step_size_Q16 );
out0_Q10 = silk_ADD16( out0_Q10, pred_Q10 );
out1_Q10 = silk_ADD16( out1_Q10, pred_Q10 );
prev_out_Q10[ j ] = out0_Q10;
prev_out_Q10[ j + nStates ] = out1_Q10;
/* compute RD for ind_tmp and ind_tmp + 1 */
if( ind_tmp + 1 >= NLSF_QUANT_MAX_AMPLITUDE ) {
if( ind_tmp + 1 == NLSF_QUANT_MAX_AMPLITUDE ) {
rate0_Q5 = rates_Q5[ ind_tmp + NLSF_QUANT_MAX_AMPLITUDE ];
rate1_Q5 = 280;
} else {
rate0_Q5 = silk_SMLABB( 280 - 43 * NLSF_QUANT_MAX_AMPLITUDE, 43, ind_tmp );
rate1_Q5 = silk_ADD16( rate0_Q5, 43 );
}
} else if( ind_tmp <= -NLSF_QUANT_MAX_AMPLITUDE ) {
if( ind_tmp == -NLSF_QUANT_MAX_AMPLITUDE ) {
rate0_Q5 = 280;
rate1_Q5 = rates_Q5[ ind_tmp + 1 + NLSF_QUANT_MAX_AMPLITUDE ];
} else {
rate0_Q5 = silk_SMLABB( 280 - 43 * NLSF_QUANT_MAX_AMPLITUDE, -43, ind_tmp );
rate1_Q5 = silk_SUB16( rate0_Q5, 43 );
}
} else {
rate0_Q5 = rates_Q5[ ind_tmp + NLSF_QUANT_MAX_AMPLITUDE ];
rate1_Q5 = rates_Q5[ ind_tmp + 1 + NLSF_QUANT_MAX_AMPLITUDE ];
}
RD_tmp_Q25 = RD_Q25[ j ];
diff_Q10 = silk_SUB16( in_Q10, out0_Q10 );
RD_Q25[ j ] = silk_SMLABB( silk_MLA( RD_tmp_Q25, silk_SMULBB( diff_Q10, diff_Q10 ), w_Q5[ i ] ), mu_Q20, rate0_Q5 );
diff_Q10 = silk_SUB16( in_Q10, out1_Q10 );
RD_Q25[ j + nStates ] = silk_SMLABB( silk_MLA( RD_tmp_Q25, silk_SMULBB( diff_Q10, diff_Q10 ), w_Q5[ i ] ), mu_Q20, rate1_Q5 );
}
if( nStates <= ( NLSF_QUANT_DEL_DEC_STATES >> 1 ) ) {
/* double number of states and copy */
for( j = 0; j < nStates; j++ ) {
ind[ j + nStates ][ i ] = ind[ j ][ i ] + 1;
}
nStates = silk_LSHIFT( nStates, 1 );
for( j = nStates; j < NLSF_QUANT_DEL_DEC_STATES; j++ ) {
ind[ j ][ i ] = ind[ j - nStates ][ i ];
}
} else if( i > 0 ) {
/* sort lower and upper half of RD_Q25, pairwise */
for( j = 0; j < NLSF_QUANT_DEL_DEC_STATES; j++ ) {
if( RD_Q25[ j ] > RD_Q25[ j + NLSF_QUANT_DEL_DEC_STATES ] ) {
RD_max_Q25[ j ] = RD_Q25[ j ];
RD_min_Q25[ j ] = RD_Q25[ j + NLSF_QUANT_DEL_DEC_STATES ];
RD_Q25[ j ] = RD_min_Q25[ j ];
RD_Q25[ j + NLSF_QUANT_DEL_DEC_STATES ] = RD_max_Q25[ j ];
/* swap prev_out values */
out0_Q10 = prev_out_Q10[ j ];
prev_out_Q10[ j ] = prev_out_Q10[ j + NLSF_QUANT_DEL_DEC_STATES ];
prev_out_Q10[ j + NLSF_QUANT_DEL_DEC_STATES ] = out0_Q10;
ind_sort[ j ] = j + NLSF_QUANT_DEL_DEC_STATES;
} else {
RD_min_Q25[ j ] = RD_Q25[ j ];
RD_max_Q25[ j ] = RD_Q25[ j + NLSF_QUANT_DEL_DEC_STATES ];
ind_sort[ j ] = j;
}
}
/* compare the highest RD values of the winning half with the lowest one in the losing half, and copy if necessary */
/* afterwards ind_sort[] will contain the indices of the NLSF_QUANT_DEL_DEC_STATES winning RD values */
while( 1 ) {
min_max_Q25 = silk_int32_MAX;
max_min_Q25 = 0;
ind_min_max = 0;
ind_max_min = 0;
for( j = 0; j < NLSF_QUANT_DEL_DEC_STATES; j++ ) {
if( min_max_Q25 > RD_max_Q25[ j ] ) {
min_max_Q25 = RD_max_Q25[ j ];
ind_min_max = j;
}
if( max_min_Q25 < RD_min_Q25[ j ] ) {
max_min_Q25 = RD_min_Q25[ j ];
ind_max_min = j;
}
}
if( min_max_Q25 >= max_min_Q25 ) {
break;
}
/* copy ind_min_max to ind_max_min */
ind_sort[ ind_max_min ] = ind_sort[ ind_min_max ] ^ NLSF_QUANT_DEL_DEC_STATES;
RD_Q25[ ind_max_min ] = RD_Q25[ ind_min_max + NLSF_QUANT_DEL_DEC_STATES ];
prev_out_Q10[ ind_max_min ] = prev_out_Q10[ ind_min_max + NLSF_QUANT_DEL_DEC_STATES ];
RD_min_Q25[ ind_max_min ] = 0;
RD_max_Q25[ ind_min_max ] = silk_int32_MAX;
silk_memcpy( ind[ ind_max_min ], ind[ ind_min_max ], MAX_LPC_ORDER * sizeof( opus_int8 ) );
}
/* increment index if it comes from the upper half */
for( j = 0; j < NLSF_QUANT_DEL_DEC_STATES; j++ ) {
ind[ j ][ i ] += silk_RSHIFT( ind_sort[ j ], NLSF_QUANT_DEL_DEC_STATES_LOG2 );
}
} else { /* i == 0 */
break;
}
}
/* last sample: find winner, copy indices and return RD value */
ind_tmp = 0;
min_Q25 = silk_int32_MAX;
for( j = 0; j < 2 * NLSF_QUANT_DEL_DEC_STATES; j++ ) {
if( min_Q25 > RD_Q25[ j ] ) {
min_Q25 = RD_Q25[ j ];
ind_tmp = j;
}
}
for( j = 0; j < order; j++ ) {
indices[ j ] = ind[ ind_tmp & ( NLSF_QUANT_DEL_DEC_STATES - 1 ) ][ j ];
silk_assert( indices[ j ] >= -NLSF_QUANT_MAX_AMPLITUDE_EXT );
silk_assert( indices[ j ] <= NLSF_QUANT_MAX_AMPLITUDE_EXT );
}
indices[ 0 ] += silk_RSHIFT( ind_tmp, NLSF_QUANT_DEL_DEC_STATES_LOG2 );
silk_assert( indices[ 0 ] <= NLSF_QUANT_MAX_AMPLITUDE_EXT );
silk_assert( min_Q25 >= 0 );
return min_Q25;
}

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/***********************************************************************
Copyright (c) 2006-2011, Skype Limited. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
- Neither the name of Internet Society, IETF or IETF Trust, nor the
names of specific contributors, may be used to endorse or promote
products derived from this software without specific prior written
permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
***********************************************************************/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "main.h"
#include "stack_alloc.h"
/***********************/
/* NLSF vector encoder */
/***********************/
opus_int32 silk_NLSF_encode( /* O Returns RD value in Q25 */
opus_int8 *NLSFIndices, /* I Codebook path vector [ LPC_ORDER + 1 ] */
opus_int16 *pNLSF_Q15, /* I/O Quantized NLSF vector [ LPC_ORDER ] */
const silk_NLSF_CB_struct *psNLSF_CB, /* I Codebook object */
const opus_int16 *pW_QW, /* I NLSF weight vector [ LPC_ORDER ] */
const opus_int NLSF_mu_Q20, /* I Rate weight for the RD optimization */
const opus_int nSurvivors, /* I Max survivors after first stage */
const opus_int signalType /* I Signal type: 0/1/2 */
)
{
opus_int i, s, ind1, bestIndex, prob_Q8, bits_q7;
opus_int32 W_tmp_Q9;
VARDECL( opus_int32, err_Q26 );
VARDECL( opus_int32, RD_Q25 );
VARDECL( opus_int, tempIndices1 );
VARDECL( opus_int8, tempIndices2 );
opus_int16 res_Q15[ MAX_LPC_ORDER ];
opus_int16 res_Q10[ MAX_LPC_ORDER ];
opus_int16 NLSF_tmp_Q15[ MAX_LPC_ORDER ];
opus_int16 W_tmp_QW[ MAX_LPC_ORDER ];
opus_int16 W_adj_Q5[ MAX_LPC_ORDER ];
opus_uint8 pred_Q8[ MAX_LPC_ORDER ];
opus_int16 ec_ix[ MAX_LPC_ORDER ];
const opus_uint8 *pCB_element, *iCDF_ptr;
SAVE_STACK;
silk_assert( nSurvivors <= NLSF_VQ_MAX_SURVIVORS );
silk_assert( signalType >= 0 && signalType <= 2 );
silk_assert( NLSF_mu_Q20 <= 32767 && NLSF_mu_Q20 >= 0 );
/* NLSF stabilization */
silk_NLSF_stabilize( pNLSF_Q15, psNLSF_CB->deltaMin_Q15, psNLSF_CB->order );
/* First stage: VQ */
ALLOC( err_Q26, psNLSF_CB->nVectors, opus_int32 );
silk_NLSF_VQ( err_Q26, pNLSF_Q15, psNLSF_CB->CB1_NLSF_Q8, psNLSF_CB->nVectors, psNLSF_CB->order );
/* Sort the quantization errors */
ALLOC( tempIndices1, nSurvivors, opus_int );
silk_insertion_sort_increasing( err_Q26, tempIndices1, psNLSF_CB->nVectors, nSurvivors );
ALLOC( RD_Q25, nSurvivors, opus_int32 );
ALLOC( tempIndices2, nSurvivors * MAX_LPC_ORDER, opus_int8 );
/* Loop over survivors */
for( s = 0; s < nSurvivors; s++ ) {
ind1 = tempIndices1[ s ];
/* Residual after first stage */
pCB_element = &psNLSF_CB->CB1_NLSF_Q8[ ind1 * psNLSF_CB->order ];
for( i = 0; i < psNLSF_CB->order; i++ ) {
NLSF_tmp_Q15[ i ] = silk_LSHIFT16( (opus_int16)pCB_element[ i ], 7 );
res_Q15[ i ] = pNLSF_Q15[ i ] - NLSF_tmp_Q15[ i ];
}
/* Weights from codebook vector */
silk_NLSF_VQ_weights_laroia( W_tmp_QW, NLSF_tmp_Q15, psNLSF_CB->order );
/* Apply square-rooted weights */
for( i = 0; i < psNLSF_CB->order; i++ ) {
W_tmp_Q9 = silk_SQRT_APPROX( silk_LSHIFT( (opus_int32)W_tmp_QW[ i ], 18 - NLSF_W_Q ) );
res_Q10[ i ] = (opus_int16)silk_RSHIFT( silk_SMULBB( res_Q15[ i ], W_tmp_Q9 ), 14 );
}
/* Modify input weights accordingly */
for( i = 0; i < psNLSF_CB->order; i++ ) {
W_adj_Q5[ i ] = silk_DIV32_16( silk_LSHIFT( (opus_int32)pW_QW[ i ], 5 ), W_tmp_QW[ i ] );
}
/* Unpack entropy table indices and predictor for current CB1 index */
silk_NLSF_unpack( ec_ix, pred_Q8, psNLSF_CB, ind1 );
/* Trellis quantizer */
RD_Q25[ s ] = silk_NLSF_del_dec_quant( &tempIndices2[ s * MAX_LPC_ORDER ], res_Q10, W_adj_Q5, pred_Q8, ec_ix,
psNLSF_CB->ec_Rates_Q5, psNLSF_CB->quantStepSize_Q16, psNLSF_CB->invQuantStepSize_Q6, NLSF_mu_Q20, psNLSF_CB->order );
/* Add rate for first stage */
iCDF_ptr = &psNLSF_CB->CB1_iCDF[ ( signalType >> 1 ) * psNLSF_CB->nVectors ];
if( ind1 == 0 ) {
prob_Q8 = 256 - iCDF_ptr[ ind1 ];
} else {
prob_Q8 = iCDF_ptr[ ind1 - 1 ] - iCDF_ptr[ ind1 ];
}
bits_q7 = ( 8 << 7 ) - silk_lin2log( prob_Q8 );
RD_Q25[ s ] = silk_SMLABB( RD_Q25[ s ], bits_q7, silk_RSHIFT( NLSF_mu_Q20, 2 ) );
}
/* Find the lowest rate-distortion error */
silk_insertion_sort_increasing( RD_Q25, &bestIndex, nSurvivors, 1 );
NLSFIndices[ 0 ] = (opus_int8)tempIndices1[ bestIndex ];
silk_memcpy( &NLSFIndices[ 1 ], &tempIndices2[ bestIndex * MAX_LPC_ORDER ], psNLSF_CB->order * sizeof( opus_int8 ) );
/* Decode */
silk_NLSF_decode( pNLSF_Q15, NLSFIndices, psNLSF_CB );
RESTORE_STACK;
return RD_Q25[ 0 ];
}

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/***********************************************************************
Copyright (c) 2006-2011, Skype Limited. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
- Neither the name of Internet Society, IETF or IETF Trust, nor the
names of specific contributors, may be used to endorse or promote
products derived from this software without specific prior written
permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
***********************************************************************/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
/* NLSF stabilizer: */
/* */
/* - Moves NLSFs further apart if they are too close */
/* - Moves NLSFs away from borders if they are too close */
/* - High effort to achieve a modification with minimum */
/* Euclidean distance to input vector */
/* - Output are sorted NLSF coefficients */
/* */
#include "SigProc_FIX.h"
/* Constant Definitions */
#define MAX_LOOPS 20
/* NLSF stabilizer, for a single input data vector */
void silk_NLSF_stabilize(
opus_int16 *NLSF_Q15, /* I/O Unstable/stabilized normalized LSF vector in Q15 [L] */
const opus_int16 *NDeltaMin_Q15, /* I Min distance vector, NDeltaMin_Q15[L] must be >= 1 [L+1] */
const opus_int L /* I Number of NLSF parameters in the input vector */
)
{
opus_int i, I=0, k, loops;
opus_int16 center_freq_Q15;
opus_int32 diff_Q15, min_diff_Q15, min_center_Q15, max_center_Q15;
/* This is necessary to ensure an output within range of a opus_int16 */
silk_assert( NDeltaMin_Q15[L] >= 1 );
for( loops = 0; loops < MAX_LOOPS; loops++ ) {
/**************************/
/* Find smallest distance */
/**************************/
/* First element */
min_diff_Q15 = NLSF_Q15[0] - NDeltaMin_Q15[0];
I = 0;
/* Middle elements */
for( i = 1; i <= L-1; i++ ) {
diff_Q15 = NLSF_Q15[i] - ( NLSF_Q15[i-1] + NDeltaMin_Q15[i] );
if( diff_Q15 < min_diff_Q15 ) {
min_diff_Q15 = diff_Q15;
I = i;
}
}
/* Last element */
diff_Q15 = ( 1 << 15 ) - ( NLSF_Q15[L-1] + NDeltaMin_Q15[L] );
if( diff_Q15 < min_diff_Q15 ) {
min_diff_Q15 = diff_Q15;
I = L;
}
/***************************************************/
/* Now check if the smallest distance non-negative */
/***************************************************/
if( min_diff_Q15 >= 0 ) {
return;
}
if( I == 0 ) {
/* Move away from lower limit */
NLSF_Q15[0] = NDeltaMin_Q15[0];
} else if( I == L) {
/* Move away from higher limit */
NLSF_Q15[L-1] = ( 1 << 15 ) - NDeltaMin_Q15[L];
} else {
/* Find the lower extreme for the location of the current center frequency */
min_center_Q15 = 0;
for( k = 0; k < I; k++ ) {
min_center_Q15 += NDeltaMin_Q15[k];
}
min_center_Q15 += silk_RSHIFT( NDeltaMin_Q15[I], 1 );
/* Find the upper extreme for the location of the current center frequency */
max_center_Q15 = 1 << 15;
for( k = L; k > I; k-- ) {
max_center_Q15 -= NDeltaMin_Q15[k];
}
max_center_Q15 -= silk_RSHIFT( NDeltaMin_Q15[I], 1 );
/* Move apart, sorted by value, keeping the same center frequency */
center_freq_Q15 = (opus_int16)silk_LIMIT_32( silk_RSHIFT_ROUND( (opus_int32)NLSF_Q15[I-1] + (opus_int32)NLSF_Q15[I], 1 ),
min_center_Q15, max_center_Q15 );
NLSF_Q15[I-1] = center_freq_Q15 - silk_RSHIFT( NDeltaMin_Q15[I], 1 );
NLSF_Q15[I] = NLSF_Q15[I-1] + NDeltaMin_Q15[I];
}
}
/* Safe and simple fall back method, which is less ideal than the above */
if( loops == MAX_LOOPS )
{
/* Insertion sort (fast for already almost sorted arrays): */
/* Best case: O(n) for an already sorted array */
/* Worst case: O(n^2) for an inversely sorted array */
silk_insertion_sort_increasing_all_values_int16( &NLSF_Q15[0], L );
/* First NLSF should be no less than NDeltaMin[0] */
NLSF_Q15[0] = silk_max_int( NLSF_Q15[0], NDeltaMin_Q15[0] );
/* Keep delta_min distance between the NLSFs */
for( i = 1; i < L; i++ )
NLSF_Q15[i] = silk_max_int( NLSF_Q15[i], NLSF_Q15[i-1] + NDeltaMin_Q15[i] );
/* Last NLSF should be no higher than 1 - NDeltaMin[L] */
NLSF_Q15[L-1] = silk_min_int( NLSF_Q15[L-1], (1<<15) - NDeltaMin_Q15[L] );
/* Keep NDeltaMin distance between the NLSFs */
for( i = L-2; i >= 0; i-- )
NLSF_Q15[i] = silk_min_int( NLSF_Q15[i], NLSF_Q15[i+1] - NDeltaMin_Q15[i+1] );
}
}

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/***********************************************************************
Copyright (c) 2006-2011, Skype Limited. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
- Neither the name of Internet Society, IETF or IETF Trust, nor the
names of specific contributors, may be used to endorse or promote
products derived from this software without specific prior written
permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
***********************************************************************/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "main.h"
/* Unpack predictor values and indices for entropy coding tables */
void silk_NLSF_unpack(
opus_int16 ec_ix[], /* O Indices to entropy tables [ LPC_ORDER ] */
opus_uint8 pred_Q8[], /* O LSF predictor [ LPC_ORDER ] */
const silk_NLSF_CB_struct *psNLSF_CB, /* I Codebook object */
const opus_int CB1_index /* I Index of vector in first LSF codebook */
)
{
opus_int i;
opus_uint8 entry;
const opus_uint8 *ec_sel_ptr;
ec_sel_ptr = &psNLSF_CB->ec_sel[ CB1_index * psNLSF_CB->order / 2 ];
for( i = 0; i < psNLSF_CB->order; i += 2 ) {
entry = *ec_sel_ptr++;
ec_ix [ i ] = silk_SMULBB( silk_RSHIFT( entry, 1 ) & 7, 2 * NLSF_QUANT_MAX_AMPLITUDE + 1 );
pred_Q8[ i ] = psNLSF_CB->pred_Q8[ i + ( entry & 1 ) * ( psNLSF_CB->order - 1 ) ];
ec_ix [ i + 1 ] = silk_SMULBB( silk_RSHIFT( entry, 5 ) & 7, 2 * NLSF_QUANT_MAX_AMPLITUDE + 1 );
pred_Q8[ i + 1 ] = psNLSF_CB->pred_Q8[ i + ( silk_RSHIFT( entry, 4 ) & 1 ) * ( psNLSF_CB->order - 1 ) + 1 ];
}
}

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src/engine/external/opus/silk/NSQ.c vendored Normal file
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/***********************************************************************
Copyright (c) 2006-2011, Skype Limited. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
- Neither the name of Internet Society, IETF or IETF Trust, nor the
names of specific contributors, may be used to endorse or promote
products derived from this software without specific prior written
permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
***********************************************************************/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "main.h"
#include "stack_alloc.h"
static OPUS_INLINE void silk_nsq_scale_states(
const silk_encoder_state *psEncC, /* I Encoder State */
silk_nsq_state *NSQ, /* I/O NSQ state */
const opus_int32 x_Q3[], /* I input in Q3 */
opus_int32 x_sc_Q10[], /* O input scaled with 1/Gain */
const opus_int16 sLTP[], /* I re-whitened LTP state in Q0 */
opus_int32 sLTP_Q15[], /* O LTP state matching scaled input */
opus_int subfr, /* I subframe number */
const opus_int LTP_scale_Q14, /* I */
const opus_int32 Gains_Q16[ MAX_NB_SUBFR ], /* I */
const opus_int pitchL[ MAX_NB_SUBFR ], /* I Pitch lag */
const opus_int signal_type /* I Signal type */
);
static OPUS_INLINE void silk_noise_shape_quantizer(
silk_nsq_state *NSQ, /* I/O NSQ state */
opus_int signalType, /* I Signal type */
const opus_int32 x_sc_Q10[], /* I */
opus_int8 pulses[], /* O */
opus_int16 xq[], /* O */
opus_int32 sLTP_Q15[], /* I/O LTP state */
const opus_int16 a_Q12[], /* I Short term prediction coefs */
const opus_int16 b_Q14[], /* I Long term prediction coefs */
const opus_int16 AR_shp_Q13[], /* I Noise shaping AR coefs */
opus_int lag, /* I Pitch lag */
opus_int32 HarmShapeFIRPacked_Q14, /* I */
opus_int Tilt_Q14, /* I Spectral tilt */
opus_int32 LF_shp_Q14, /* I */
opus_int32 Gain_Q16, /* I */
opus_int Lambda_Q10, /* I */
opus_int offset_Q10, /* I */
opus_int length, /* I Input length */
opus_int shapingLPCOrder, /* I Noise shaping AR filter order */
opus_int predictLPCOrder /* I Prediction filter order */
);
void silk_NSQ(
const silk_encoder_state *psEncC, /* I/O Encoder State */
silk_nsq_state *NSQ, /* I/O NSQ state */
SideInfoIndices *psIndices, /* I/O Quantization Indices */
const opus_int32 x_Q3[], /* I Prefiltered input signal */
opus_int8 pulses[], /* O Quantized pulse signal */
const opus_int16 PredCoef_Q12[ 2 * MAX_LPC_ORDER ], /* I Short term prediction coefs */
const opus_int16 LTPCoef_Q14[ LTP_ORDER * MAX_NB_SUBFR ], /* I Long term prediction coefs */
const opus_int16 AR2_Q13[ MAX_NB_SUBFR * MAX_SHAPE_LPC_ORDER ], /* I Noise shaping coefs */
const opus_int HarmShapeGain_Q14[ MAX_NB_SUBFR ], /* I Long term shaping coefs */
const opus_int Tilt_Q14[ MAX_NB_SUBFR ], /* I Spectral tilt */
const opus_int32 LF_shp_Q14[ MAX_NB_SUBFR ], /* I Low frequency shaping coefs */
const opus_int32 Gains_Q16[ MAX_NB_SUBFR ], /* I Quantization step sizes */
const opus_int pitchL[ MAX_NB_SUBFR ], /* I Pitch lags */
const opus_int Lambda_Q10, /* I Rate/distortion tradeoff */
const opus_int LTP_scale_Q14 /* I LTP state scaling */
)
{
opus_int k, lag, start_idx, LSF_interpolation_flag;
const opus_int16 *A_Q12, *B_Q14, *AR_shp_Q13;
opus_int16 *pxq;
VARDECL( opus_int32, sLTP_Q15 );
VARDECL( opus_int16, sLTP );
opus_int32 HarmShapeFIRPacked_Q14;
opus_int offset_Q10;
VARDECL( opus_int32, x_sc_Q10 );
SAVE_STACK;
NSQ->rand_seed = psIndices->Seed;
/* Set unvoiced lag to the previous one, overwrite later for voiced */
lag = NSQ->lagPrev;
silk_assert( NSQ->prev_gain_Q16 != 0 );
offset_Q10 = silk_Quantization_Offsets_Q10[ psIndices->signalType >> 1 ][ psIndices->quantOffsetType ];
if( psIndices->NLSFInterpCoef_Q2 == 4 ) {
LSF_interpolation_flag = 0;
} else {
LSF_interpolation_flag = 1;
}
ALLOC( sLTP_Q15,
psEncC->ltp_mem_length + psEncC->frame_length, opus_int32 );
ALLOC( sLTP, psEncC->ltp_mem_length + psEncC->frame_length, opus_int16 );
ALLOC( x_sc_Q10, psEncC->subfr_length, opus_int32 );
/* Set up pointers to start of sub frame */
NSQ->sLTP_shp_buf_idx = psEncC->ltp_mem_length;
NSQ->sLTP_buf_idx = psEncC->ltp_mem_length;
pxq = &NSQ->xq[ psEncC->ltp_mem_length ];
for( k = 0; k < psEncC->nb_subfr; k++ ) {
A_Q12 = &PredCoef_Q12[ (( k >> 1 ) | ( 1 - LSF_interpolation_flag )) * MAX_LPC_ORDER ];
B_Q14 = &LTPCoef_Q14[ k * LTP_ORDER ];
AR_shp_Q13 = &AR2_Q13[ k * MAX_SHAPE_LPC_ORDER ];
/* Noise shape parameters */
silk_assert( HarmShapeGain_Q14[ k ] >= 0 );
HarmShapeFIRPacked_Q14 = silk_RSHIFT( HarmShapeGain_Q14[ k ], 2 );
HarmShapeFIRPacked_Q14 |= silk_LSHIFT( (opus_int32)silk_RSHIFT( HarmShapeGain_Q14[ k ], 1 ), 16 );
NSQ->rewhite_flag = 0;
if( psIndices->signalType == TYPE_VOICED ) {
/* Voiced */
lag = pitchL[ k ];
/* Re-whitening */
if( ( k & ( 3 - silk_LSHIFT( LSF_interpolation_flag, 1 ) ) ) == 0 ) {
/* Rewhiten with new A coefs */
start_idx = psEncC->ltp_mem_length - lag - psEncC->predictLPCOrder - LTP_ORDER / 2;
silk_assert( start_idx > 0 );
silk_LPC_analysis_filter( &sLTP[ start_idx ], &NSQ->xq[ start_idx + k * psEncC->subfr_length ],
A_Q12, psEncC->ltp_mem_length - start_idx, psEncC->predictLPCOrder );
NSQ->rewhite_flag = 1;
NSQ->sLTP_buf_idx = psEncC->ltp_mem_length;
}
}
silk_nsq_scale_states( psEncC, NSQ, x_Q3, x_sc_Q10, sLTP, sLTP_Q15, k, LTP_scale_Q14, Gains_Q16, pitchL, psIndices->signalType );
silk_noise_shape_quantizer( NSQ, psIndices->signalType, x_sc_Q10, pulses, pxq, sLTP_Q15, A_Q12, B_Q14,
AR_shp_Q13, lag, HarmShapeFIRPacked_Q14, Tilt_Q14[ k ], LF_shp_Q14[ k ], Gains_Q16[ k ], Lambda_Q10,
offset_Q10, psEncC->subfr_length, psEncC->shapingLPCOrder, psEncC->predictLPCOrder );
x_Q3 += psEncC->subfr_length;
pulses += psEncC->subfr_length;
pxq += psEncC->subfr_length;
}
/* Update lagPrev for next frame */
NSQ->lagPrev = pitchL[ psEncC->nb_subfr - 1 ];
/* Save quantized speech and noise shaping signals */
/* DEBUG_STORE_DATA( enc.pcm, &NSQ->xq[ psEncC->ltp_mem_length ], psEncC->frame_length * sizeof( opus_int16 ) ) */
silk_memmove( NSQ->xq, &NSQ->xq[ psEncC->frame_length ], psEncC->ltp_mem_length * sizeof( opus_int16 ) );
silk_memmove( NSQ->sLTP_shp_Q14, &NSQ->sLTP_shp_Q14[ psEncC->frame_length ], psEncC->ltp_mem_length * sizeof( opus_int32 ) );
RESTORE_STACK;
}
/***********************************/
/* silk_noise_shape_quantizer */
/***********************************/
static OPUS_INLINE void silk_noise_shape_quantizer(
silk_nsq_state *NSQ, /* I/O NSQ state */
opus_int signalType, /* I Signal type */
const opus_int32 x_sc_Q10[], /* I */
opus_int8 pulses[], /* O */
opus_int16 xq[], /* O */
opus_int32 sLTP_Q15[], /* I/O LTP state */
const opus_int16 a_Q12[], /* I Short term prediction coefs */
const opus_int16 b_Q14[], /* I Long term prediction coefs */
const opus_int16 AR_shp_Q13[], /* I Noise shaping AR coefs */
opus_int lag, /* I Pitch lag */
opus_int32 HarmShapeFIRPacked_Q14, /* I */
opus_int Tilt_Q14, /* I Spectral tilt */
opus_int32 LF_shp_Q14, /* I */
opus_int32 Gain_Q16, /* I */
opus_int Lambda_Q10, /* I */
opus_int offset_Q10, /* I */
opus_int length, /* I Input length */
opus_int shapingLPCOrder, /* I Noise shaping AR filter order */
opus_int predictLPCOrder /* I Prediction filter order */
)
{
opus_int i, j;
opus_int32 LTP_pred_Q13, LPC_pred_Q10, n_AR_Q12, n_LTP_Q13;
opus_int32 n_LF_Q12, r_Q10, rr_Q10, q1_Q0, q1_Q10, q2_Q10, rd1_Q20, rd2_Q20;
opus_int32 exc_Q14, LPC_exc_Q14, xq_Q14, Gain_Q10;
opus_int32 tmp1, tmp2, sLF_AR_shp_Q14;
opus_int32 *psLPC_Q14, *shp_lag_ptr, *pred_lag_ptr;
shp_lag_ptr = &NSQ->sLTP_shp_Q14[ NSQ->sLTP_shp_buf_idx - lag + HARM_SHAPE_FIR_TAPS / 2 ];
pred_lag_ptr = &sLTP_Q15[ NSQ->sLTP_buf_idx - lag + LTP_ORDER / 2 ];
Gain_Q10 = silk_RSHIFT( Gain_Q16, 6 );
/* Set up short term AR state */
psLPC_Q14 = &NSQ->sLPC_Q14[ NSQ_LPC_BUF_LENGTH - 1 ];
for( i = 0; i < length; i++ ) {
/* Generate dither */
NSQ->rand_seed = silk_RAND( NSQ->rand_seed );
/* Short-term prediction */
silk_assert( predictLPCOrder == 10 || predictLPCOrder == 16 );
/* Avoids introducing a bias because silk_SMLAWB() always rounds to -inf */
LPC_pred_Q10 = silk_RSHIFT( predictLPCOrder, 1 );
LPC_pred_Q10 = silk_SMLAWB( LPC_pred_Q10, psLPC_Q14[ 0 ], a_Q12[ 0 ] );
LPC_pred_Q10 = silk_SMLAWB( LPC_pred_Q10, psLPC_Q14[ -1 ], a_Q12[ 1 ] );
LPC_pred_Q10 = silk_SMLAWB( LPC_pred_Q10, psLPC_Q14[ -2 ], a_Q12[ 2 ] );
LPC_pred_Q10 = silk_SMLAWB( LPC_pred_Q10, psLPC_Q14[ -3 ], a_Q12[ 3 ] );
LPC_pred_Q10 = silk_SMLAWB( LPC_pred_Q10, psLPC_Q14[ -4 ], a_Q12[ 4 ] );
LPC_pred_Q10 = silk_SMLAWB( LPC_pred_Q10, psLPC_Q14[ -5 ], a_Q12[ 5 ] );
LPC_pred_Q10 = silk_SMLAWB( LPC_pred_Q10, psLPC_Q14[ -6 ], a_Q12[ 6 ] );
LPC_pred_Q10 = silk_SMLAWB( LPC_pred_Q10, psLPC_Q14[ -7 ], a_Q12[ 7 ] );
LPC_pred_Q10 = silk_SMLAWB( LPC_pred_Q10, psLPC_Q14[ -8 ], a_Q12[ 8 ] );
LPC_pred_Q10 = silk_SMLAWB( LPC_pred_Q10, psLPC_Q14[ -9 ], a_Q12[ 9 ] );
if( predictLPCOrder == 16 ) {
LPC_pred_Q10 = silk_SMLAWB( LPC_pred_Q10, psLPC_Q14[ -10 ], a_Q12[ 10 ] );
LPC_pred_Q10 = silk_SMLAWB( LPC_pred_Q10, psLPC_Q14[ -11 ], a_Q12[ 11 ] );
LPC_pred_Q10 = silk_SMLAWB( LPC_pred_Q10, psLPC_Q14[ -12 ], a_Q12[ 12 ] );
LPC_pred_Q10 = silk_SMLAWB( LPC_pred_Q10, psLPC_Q14[ -13 ], a_Q12[ 13 ] );
LPC_pred_Q10 = silk_SMLAWB( LPC_pred_Q10, psLPC_Q14[ -14 ], a_Q12[ 14 ] );
LPC_pred_Q10 = silk_SMLAWB( LPC_pred_Q10, psLPC_Q14[ -15 ], a_Q12[ 15 ] );
}
/* Long-term prediction */
if( signalType == TYPE_VOICED ) {
/* Unrolled loop */
/* Avoids introducing a bias because silk_SMLAWB() always rounds to -inf */
LTP_pred_Q13 = 2;
LTP_pred_Q13 = silk_SMLAWB( LTP_pred_Q13, pred_lag_ptr[ 0 ], b_Q14[ 0 ] );
LTP_pred_Q13 = silk_SMLAWB( LTP_pred_Q13, pred_lag_ptr[ -1 ], b_Q14[ 1 ] );
LTP_pred_Q13 = silk_SMLAWB( LTP_pred_Q13, pred_lag_ptr[ -2 ], b_Q14[ 2 ] );
LTP_pred_Q13 = silk_SMLAWB( LTP_pred_Q13, pred_lag_ptr[ -3 ], b_Q14[ 3 ] );
LTP_pred_Q13 = silk_SMLAWB( LTP_pred_Q13, pred_lag_ptr[ -4 ], b_Q14[ 4 ] );
pred_lag_ptr++;
} else {
LTP_pred_Q13 = 0;
}
/* Noise shape feedback */
silk_assert( ( shapingLPCOrder & 1 ) == 0 ); /* check that order is even */
tmp2 = psLPC_Q14[ 0 ];
tmp1 = NSQ->sAR2_Q14[ 0 ];
NSQ->sAR2_Q14[ 0 ] = tmp2;
n_AR_Q12 = silk_RSHIFT( shapingLPCOrder, 1 );
n_AR_Q12 = silk_SMLAWB( n_AR_Q12, tmp2, AR_shp_Q13[ 0 ] );
for( j = 2; j < shapingLPCOrder; j += 2 ) {
tmp2 = NSQ->sAR2_Q14[ j - 1 ];
NSQ->sAR2_Q14[ j - 1 ] = tmp1;
n_AR_Q12 = silk_SMLAWB( n_AR_Q12, tmp1, AR_shp_Q13[ j - 1 ] );
tmp1 = NSQ->sAR2_Q14[ j + 0 ];
NSQ->sAR2_Q14[ j + 0 ] = tmp2;
n_AR_Q12 = silk_SMLAWB( n_AR_Q12, tmp2, AR_shp_Q13[ j ] );
}
NSQ->sAR2_Q14[ shapingLPCOrder - 1 ] = tmp1;
n_AR_Q12 = silk_SMLAWB( n_AR_Q12, tmp1, AR_shp_Q13[ shapingLPCOrder - 1 ] );
n_AR_Q12 = silk_LSHIFT32( n_AR_Q12, 1 ); /* Q11 -> Q12 */
n_AR_Q12 = silk_SMLAWB( n_AR_Q12, NSQ->sLF_AR_shp_Q14, Tilt_Q14 );
n_LF_Q12 = silk_SMULWB( NSQ->sLTP_shp_Q14[ NSQ->sLTP_shp_buf_idx - 1 ], LF_shp_Q14 );
n_LF_Q12 = silk_SMLAWT( n_LF_Q12, NSQ->sLF_AR_shp_Q14, LF_shp_Q14 );
silk_assert( lag > 0 || signalType != TYPE_VOICED );
/* Combine prediction and noise shaping signals */
tmp1 = silk_SUB32( silk_LSHIFT32( LPC_pred_Q10, 2 ), n_AR_Q12 ); /* Q12 */
tmp1 = silk_SUB32( tmp1, n_LF_Q12 ); /* Q12 */
if( lag > 0 ) {
/* Symmetric, packed FIR coefficients */
n_LTP_Q13 = silk_SMULWB( silk_ADD32( shp_lag_ptr[ 0 ], shp_lag_ptr[ -2 ] ), HarmShapeFIRPacked_Q14 );
n_LTP_Q13 = silk_SMLAWT( n_LTP_Q13, shp_lag_ptr[ -1 ], HarmShapeFIRPacked_Q14 );
n_LTP_Q13 = silk_LSHIFT( n_LTP_Q13, 1 );
shp_lag_ptr++;
tmp2 = silk_SUB32( LTP_pred_Q13, n_LTP_Q13 ); /* Q13 */
tmp1 = silk_ADD_LSHIFT32( tmp2, tmp1, 1 ); /* Q13 */
tmp1 = silk_RSHIFT_ROUND( tmp1, 3 ); /* Q10 */
} else {
tmp1 = silk_RSHIFT_ROUND( tmp1, 2 ); /* Q10 */
}
r_Q10 = silk_SUB32( x_sc_Q10[ i ], tmp1 ); /* residual error Q10 */
/* Flip sign depending on dither */
if ( NSQ->rand_seed < 0 ) {
r_Q10 = -r_Q10;
}
r_Q10 = silk_LIMIT_32( r_Q10, -(31 << 10), 30 << 10 );
/* Find two quantization level candidates and measure their rate-distortion */
q1_Q10 = silk_SUB32( r_Q10, offset_Q10 );
q1_Q0 = silk_RSHIFT( q1_Q10, 10 );
if( q1_Q0 > 0 ) {
q1_Q10 = silk_SUB32( silk_LSHIFT( q1_Q0, 10 ), QUANT_LEVEL_ADJUST_Q10 );
q1_Q10 = silk_ADD32( q1_Q10, offset_Q10 );
q2_Q10 = silk_ADD32( q1_Q10, 1024 );
rd1_Q20 = silk_SMULBB( q1_Q10, Lambda_Q10 );
rd2_Q20 = silk_SMULBB( q2_Q10, Lambda_Q10 );
} else if( q1_Q0 == 0 ) {
q1_Q10 = offset_Q10;
q2_Q10 = silk_ADD32( q1_Q10, 1024 - QUANT_LEVEL_ADJUST_Q10 );
rd1_Q20 = silk_SMULBB( q1_Q10, Lambda_Q10 );
rd2_Q20 = silk_SMULBB( q2_Q10, Lambda_Q10 );
} else if( q1_Q0 == -1 ) {
q2_Q10 = offset_Q10;
q1_Q10 = silk_SUB32( q2_Q10, 1024 - QUANT_LEVEL_ADJUST_Q10 );
rd1_Q20 = silk_SMULBB( -q1_Q10, Lambda_Q10 );
rd2_Q20 = silk_SMULBB( q2_Q10, Lambda_Q10 );
} else { /* Q1_Q0 < -1 */
q1_Q10 = silk_ADD32( silk_LSHIFT( q1_Q0, 10 ), QUANT_LEVEL_ADJUST_Q10 );
q1_Q10 = silk_ADD32( q1_Q10, offset_Q10 );
q2_Q10 = silk_ADD32( q1_Q10, 1024 );
rd1_Q20 = silk_SMULBB( -q1_Q10, Lambda_Q10 );
rd2_Q20 = silk_SMULBB( -q2_Q10, Lambda_Q10 );
}
rr_Q10 = silk_SUB32( r_Q10, q1_Q10 );
rd1_Q20 = silk_SMLABB( rd1_Q20, rr_Q10, rr_Q10 );
rr_Q10 = silk_SUB32( r_Q10, q2_Q10 );
rd2_Q20 = silk_SMLABB( rd2_Q20, rr_Q10, rr_Q10 );
if( rd2_Q20 < rd1_Q20 ) {
q1_Q10 = q2_Q10;
}
pulses[ i ] = (opus_int8)silk_RSHIFT_ROUND( q1_Q10, 10 );
/* Excitation */
exc_Q14 = silk_LSHIFT( q1_Q10, 4 );
if ( NSQ->rand_seed < 0 ) {
exc_Q14 = -exc_Q14;
}
/* Add predictions */
LPC_exc_Q14 = silk_ADD_LSHIFT32( exc_Q14, LTP_pred_Q13, 1 );
xq_Q14 = silk_ADD_LSHIFT32( LPC_exc_Q14, LPC_pred_Q10, 4 );
/* Scale XQ back to normal level before saving */
xq[ i ] = (opus_int16)silk_SAT16( silk_RSHIFT_ROUND( silk_SMULWW( xq_Q14, Gain_Q10 ), 8 ) );
/* Update states */
psLPC_Q14++;
*psLPC_Q14 = xq_Q14;
sLF_AR_shp_Q14 = silk_SUB_LSHIFT32( xq_Q14, n_AR_Q12, 2 );
NSQ->sLF_AR_shp_Q14 = sLF_AR_shp_Q14;
NSQ->sLTP_shp_Q14[ NSQ->sLTP_shp_buf_idx ] = silk_SUB_LSHIFT32( sLF_AR_shp_Q14, n_LF_Q12, 2 );
sLTP_Q15[ NSQ->sLTP_buf_idx ] = silk_LSHIFT( LPC_exc_Q14, 1 );
NSQ->sLTP_shp_buf_idx++;
NSQ->sLTP_buf_idx++;
/* Make dither dependent on quantized signal */
NSQ->rand_seed = silk_ADD32_ovflw( NSQ->rand_seed, pulses[ i ] );
}
/* Update LPC synth buffer */
silk_memcpy( NSQ->sLPC_Q14, &NSQ->sLPC_Q14[ length ], NSQ_LPC_BUF_LENGTH * sizeof( opus_int32 ) );
}
static OPUS_INLINE void silk_nsq_scale_states(
const silk_encoder_state *psEncC, /* I Encoder State */
silk_nsq_state *NSQ, /* I/O NSQ state */
const opus_int32 x_Q3[], /* I input in Q3 */
opus_int32 x_sc_Q10[], /* O input scaled with 1/Gain */
const opus_int16 sLTP[], /* I re-whitened LTP state in Q0 */
opus_int32 sLTP_Q15[], /* O LTP state matching scaled input */
opus_int subfr, /* I subframe number */
const opus_int LTP_scale_Q14, /* I */
const opus_int32 Gains_Q16[ MAX_NB_SUBFR ], /* I */
const opus_int pitchL[ MAX_NB_SUBFR ], /* I Pitch lag */
const opus_int signal_type /* I Signal type */
)
{
opus_int i, lag;
opus_int32 gain_adj_Q16, inv_gain_Q31, inv_gain_Q23;
lag = pitchL[ subfr ];
inv_gain_Q31 = silk_INVERSE32_varQ( silk_max( Gains_Q16[ subfr ], 1 ), 47 );
silk_assert( inv_gain_Q31 != 0 );
/* Calculate gain adjustment factor */
if( Gains_Q16[ subfr ] != NSQ->prev_gain_Q16 ) {
gain_adj_Q16 = silk_DIV32_varQ( NSQ->prev_gain_Q16, Gains_Q16[ subfr ], 16 );
} else {
gain_adj_Q16 = (opus_int32)1 << 16;
}
/* Scale input */
inv_gain_Q23 = silk_RSHIFT_ROUND( inv_gain_Q31, 8 );
for( i = 0; i < psEncC->subfr_length; i++ ) {
x_sc_Q10[ i ] = silk_SMULWW( x_Q3[ i ], inv_gain_Q23 );
}
/* Save inverse gain */
NSQ->prev_gain_Q16 = Gains_Q16[ subfr ];
/* After rewhitening the LTP state is un-scaled, so scale with inv_gain_Q16 */
if( NSQ->rewhite_flag ) {
if( subfr == 0 ) {
/* Do LTP downscaling */
inv_gain_Q31 = silk_LSHIFT( silk_SMULWB( inv_gain_Q31, LTP_scale_Q14 ), 2 );
}
for( i = NSQ->sLTP_buf_idx - lag - LTP_ORDER / 2; i < NSQ->sLTP_buf_idx; i++ ) {
silk_assert( i < MAX_FRAME_LENGTH );
sLTP_Q15[ i ] = silk_SMULWB( inv_gain_Q31, sLTP[ i ] );
}
}
/* Adjust for changing gain */
if( gain_adj_Q16 != (opus_int32)1 << 16 ) {
/* Scale long-term shaping state */
for( i = NSQ->sLTP_shp_buf_idx - psEncC->ltp_mem_length; i < NSQ->sLTP_shp_buf_idx; i++ ) {
NSQ->sLTP_shp_Q14[ i ] = silk_SMULWW( gain_adj_Q16, NSQ->sLTP_shp_Q14[ i ] );
}
/* Scale long-term prediction state */
if( signal_type == TYPE_VOICED && NSQ->rewhite_flag == 0 ) {
for( i = NSQ->sLTP_buf_idx - lag - LTP_ORDER / 2; i < NSQ->sLTP_buf_idx; i++ ) {
sLTP_Q15[ i ] = silk_SMULWW( gain_adj_Q16, sLTP_Q15[ i ] );
}
}
NSQ->sLF_AR_shp_Q14 = silk_SMULWW( gain_adj_Q16, NSQ->sLF_AR_shp_Q14 );
/* Scale short-term prediction and shaping states */
for( i = 0; i < NSQ_LPC_BUF_LENGTH; i++ ) {
NSQ->sLPC_Q14[ i ] = silk_SMULWW( gain_adj_Q16, NSQ->sLPC_Q14[ i ] );
}
for( i = 0; i < MAX_SHAPE_LPC_ORDER; i++ ) {
NSQ->sAR2_Q14[ i ] = silk_SMULWW( gain_adj_Q16, NSQ->sAR2_Q14[ i ] );
}
}
}

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/***********************************************************************
Copyright (c) 2006-2011, Skype Limited. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
- Neither the name of Internet Society, IETF or IETF Trust, nor the
names of specific contributors, may be used to endorse or promote
products derived from this software without specific prior written
permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
***********************************************************************/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "main.h"
#include "stack_alloc.h"
typedef struct {
opus_int32 sLPC_Q14[ MAX_SUB_FRAME_LENGTH + NSQ_LPC_BUF_LENGTH ];
opus_int32 RandState[ DECISION_DELAY ];
opus_int32 Q_Q10[ DECISION_DELAY ];
opus_int32 Xq_Q14[ DECISION_DELAY ];
opus_int32 Pred_Q15[ DECISION_DELAY ];
opus_int32 Shape_Q14[ DECISION_DELAY ];
opus_int32 sAR2_Q14[ MAX_SHAPE_LPC_ORDER ];
opus_int32 LF_AR_Q14;
opus_int32 Seed;
opus_int32 SeedInit;
opus_int32 RD_Q10;
} NSQ_del_dec_struct;
typedef struct {
opus_int32 Q_Q10;
opus_int32 RD_Q10;
opus_int32 xq_Q14;
opus_int32 LF_AR_Q14;
opus_int32 sLTP_shp_Q14;
opus_int32 LPC_exc_Q14;
} NSQ_sample_struct;
typedef NSQ_sample_struct NSQ_sample_pair[ 2 ];
static OPUS_INLINE void silk_nsq_del_dec_scale_states(
const silk_encoder_state *psEncC, /* I Encoder State */
silk_nsq_state *NSQ, /* I/O NSQ state */
NSQ_del_dec_struct psDelDec[], /* I/O Delayed decision states */
const opus_int32 x_Q3[], /* I Input in Q3 */
opus_int32 x_sc_Q10[], /* O Input scaled with 1/Gain in Q10 */
const opus_int16 sLTP[], /* I Re-whitened LTP state in Q0 */
opus_int32 sLTP_Q15[], /* O LTP state matching scaled input */
opus_int subfr, /* I Subframe number */
opus_int nStatesDelayedDecision, /* I Number of del dec states */
const opus_int LTP_scale_Q14, /* I LTP state scaling */
const opus_int32 Gains_Q16[ MAX_NB_SUBFR ], /* I */
const opus_int pitchL[ MAX_NB_SUBFR ], /* I Pitch lag */
const opus_int signal_type, /* I Signal type */
const opus_int decisionDelay /* I Decision delay */
);
/******************************************/
/* Noise shape quantizer for one subframe */
/******************************************/
static OPUS_INLINE void silk_noise_shape_quantizer_del_dec(
silk_nsq_state *NSQ, /* I/O NSQ state */
NSQ_del_dec_struct psDelDec[], /* I/O Delayed decision states */
opus_int signalType, /* I Signal type */
const opus_int32 x_Q10[], /* I */
opus_int8 pulses[], /* O */
opus_int16 xq[], /* O */
opus_int32 sLTP_Q15[], /* I/O LTP filter state */
opus_int32 delayedGain_Q10[], /* I/O Gain delay buffer */
const opus_int16 a_Q12[], /* I Short term prediction coefs */
const opus_int16 b_Q14[], /* I Long term prediction coefs */
const opus_int16 AR_shp_Q13[], /* I Noise shaping coefs */
opus_int lag, /* I Pitch lag */
opus_int32 HarmShapeFIRPacked_Q14, /* I */
opus_int Tilt_Q14, /* I Spectral tilt */
opus_int32 LF_shp_Q14, /* I */
opus_int32 Gain_Q16, /* I */
opus_int Lambda_Q10, /* I */
opus_int offset_Q10, /* I */
opus_int length, /* I Input length */
opus_int subfr, /* I Subframe number */
opus_int shapingLPCOrder, /* I Shaping LPC filter order */
opus_int predictLPCOrder, /* I Prediction filter order */
opus_int warping_Q16, /* I */
opus_int nStatesDelayedDecision, /* I Number of states in decision tree */
opus_int *smpl_buf_idx, /* I Index to newest samples in buffers */
opus_int decisionDelay /* I */
);
void silk_NSQ_del_dec(
const silk_encoder_state *psEncC, /* I/O Encoder State */
silk_nsq_state *NSQ, /* I/O NSQ state */
SideInfoIndices *psIndices, /* I/O Quantization Indices */
const opus_int32 x_Q3[], /* I Prefiltered input signal */
opus_int8 pulses[], /* O Quantized pulse signal */
const opus_int16 PredCoef_Q12[ 2 * MAX_LPC_ORDER ], /* I Short term prediction coefs */
const opus_int16 LTPCoef_Q14[ LTP_ORDER * MAX_NB_SUBFR ], /* I Long term prediction coefs */
const opus_int16 AR2_Q13[ MAX_NB_SUBFR * MAX_SHAPE_LPC_ORDER ], /* I Noise shaping coefs */
const opus_int HarmShapeGain_Q14[ MAX_NB_SUBFR ], /* I Long term shaping coefs */
const opus_int Tilt_Q14[ MAX_NB_SUBFR ], /* I Spectral tilt */
const opus_int32 LF_shp_Q14[ MAX_NB_SUBFR ], /* I Low frequency shaping coefs */
const opus_int32 Gains_Q16[ MAX_NB_SUBFR ], /* I Quantization step sizes */
const opus_int pitchL[ MAX_NB_SUBFR ], /* I Pitch lags */
const opus_int Lambda_Q10, /* I Rate/distortion tradeoff */
const opus_int LTP_scale_Q14 /* I LTP state scaling */
)
{
opus_int i, k, lag, start_idx, LSF_interpolation_flag, Winner_ind, subfr;
opus_int last_smple_idx, smpl_buf_idx, decisionDelay;
const opus_int16 *A_Q12, *B_Q14, *AR_shp_Q13;
opus_int16 *pxq;
VARDECL( opus_int32, sLTP_Q15 );
VARDECL( opus_int16, sLTP );
opus_int32 HarmShapeFIRPacked_Q14;
opus_int offset_Q10;
opus_int32 RDmin_Q10, Gain_Q10;
VARDECL( opus_int32, x_sc_Q10 );
VARDECL( opus_int32, delayedGain_Q10 );
VARDECL( NSQ_del_dec_struct, psDelDec );
NSQ_del_dec_struct *psDD;
SAVE_STACK;
/* Set unvoiced lag to the previous one, overwrite later for voiced */
lag = NSQ->lagPrev;
silk_assert( NSQ->prev_gain_Q16 != 0 );
/* Initialize delayed decision states */
ALLOC( psDelDec, psEncC->nStatesDelayedDecision, NSQ_del_dec_struct );
silk_memset( psDelDec, 0, psEncC->nStatesDelayedDecision * sizeof( NSQ_del_dec_struct ) );
for( k = 0; k < psEncC->nStatesDelayedDecision; k++ ) {
psDD = &psDelDec[ k ];
psDD->Seed = ( k + psIndices->Seed ) & 3;
psDD->SeedInit = psDD->Seed;
psDD->RD_Q10 = 0;
psDD->LF_AR_Q14 = NSQ->sLF_AR_shp_Q14;
psDD->Shape_Q14[ 0 ] = NSQ->sLTP_shp_Q14[ psEncC->ltp_mem_length - 1 ];
silk_memcpy( psDD->sLPC_Q14, NSQ->sLPC_Q14, NSQ_LPC_BUF_LENGTH * sizeof( opus_int32 ) );
silk_memcpy( psDD->sAR2_Q14, NSQ->sAR2_Q14, sizeof( NSQ->sAR2_Q14 ) );
}
offset_Q10 = silk_Quantization_Offsets_Q10[ psIndices->signalType >> 1 ][ psIndices->quantOffsetType ];
smpl_buf_idx = 0; /* index of oldest samples */
decisionDelay = silk_min_int( DECISION_DELAY, psEncC->subfr_length );
/* For voiced frames limit the decision delay to lower than the pitch lag */
if( psIndices->signalType == TYPE_VOICED ) {
for( k = 0; k < psEncC->nb_subfr; k++ ) {
decisionDelay = silk_min_int( decisionDelay, pitchL[ k ] - LTP_ORDER / 2 - 1 );
}
} else {
if( lag > 0 ) {
decisionDelay = silk_min_int( decisionDelay, lag - LTP_ORDER / 2 - 1 );
}
}
if( psIndices->NLSFInterpCoef_Q2 == 4 ) {
LSF_interpolation_flag = 0;
} else {
LSF_interpolation_flag = 1;
}
ALLOC( sLTP_Q15,
psEncC->ltp_mem_length + psEncC->frame_length, opus_int32 );
ALLOC( sLTP, psEncC->ltp_mem_length + psEncC->frame_length, opus_int16 );
ALLOC( x_sc_Q10, psEncC->subfr_length, opus_int32 );
ALLOC( delayedGain_Q10, DECISION_DELAY, opus_int32 );
/* Set up pointers to start of sub frame */
pxq = &NSQ->xq[ psEncC->ltp_mem_length ];
NSQ->sLTP_shp_buf_idx = psEncC->ltp_mem_length;
NSQ->sLTP_buf_idx = psEncC->ltp_mem_length;
subfr = 0;
for( k = 0; k < psEncC->nb_subfr; k++ ) {
A_Q12 = &PredCoef_Q12[ ( ( k >> 1 ) | ( 1 - LSF_interpolation_flag ) ) * MAX_LPC_ORDER ];
B_Q14 = &LTPCoef_Q14[ k * LTP_ORDER ];
AR_shp_Q13 = &AR2_Q13[ k * MAX_SHAPE_LPC_ORDER ];
/* Noise shape parameters */
silk_assert( HarmShapeGain_Q14[ k ] >= 0 );
HarmShapeFIRPacked_Q14 = silk_RSHIFT( HarmShapeGain_Q14[ k ], 2 );
HarmShapeFIRPacked_Q14 |= silk_LSHIFT( (opus_int32)silk_RSHIFT( HarmShapeGain_Q14[ k ], 1 ), 16 );
NSQ->rewhite_flag = 0;
if( psIndices->signalType == TYPE_VOICED ) {
/* Voiced */
lag = pitchL[ k ];
/* Re-whitening */
if( ( k & ( 3 - silk_LSHIFT( LSF_interpolation_flag, 1 ) ) ) == 0 ) {
if( k == 2 ) {
/* RESET DELAYED DECISIONS */
/* Find winner */
RDmin_Q10 = psDelDec[ 0 ].RD_Q10;
Winner_ind = 0;
for( i = 1; i < psEncC->nStatesDelayedDecision; i++ ) {
if( psDelDec[ i ].RD_Q10 < RDmin_Q10 ) {
RDmin_Q10 = psDelDec[ i ].RD_Q10;
Winner_ind = i;
}
}
for( i = 0; i < psEncC->nStatesDelayedDecision; i++ ) {
if( i != Winner_ind ) {
psDelDec[ i ].RD_Q10 += ( silk_int32_MAX >> 4 );
silk_assert( psDelDec[ i ].RD_Q10 >= 0 );
}
}
/* Copy final part of signals from winner state to output and long-term filter states */
psDD = &psDelDec[ Winner_ind ];
last_smple_idx = smpl_buf_idx + decisionDelay;
for( i = 0; i < decisionDelay; i++ ) {
last_smple_idx = ( last_smple_idx - 1 ) & DECISION_DELAY_MASK;
pulses[ i - decisionDelay ] = (opus_int8)silk_RSHIFT_ROUND( psDD->Q_Q10[ last_smple_idx ], 10 );
pxq[ i - decisionDelay ] = (opus_int16)silk_SAT16( silk_RSHIFT_ROUND(
silk_SMULWW( psDD->Xq_Q14[ last_smple_idx ], Gains_Q16[ 1 ] ), 14 ) );
NSQ->sLTP_shp_Q14[ NSQ->sLTP_shp_buf_idx - decisionDelay + i ] = psDD->Shape_Q14[ last_smple_idx ];
}
subfr = 0;
}
/* Rewhiten with new A coefs */
start_idx = psEncC->ltp_mem_length - lag - psEncC->predictLPCOrder - LTP_ORDER / 2;
silk_assert( start_idx > 0 );
silk_LPC_analysis_filter( &sLTP[ start_idx ], &NSQ->xq[ start_idx + k * psEncC->subfr_length ],
A_Q12, psEncC->ltp_mem_length - start_idx, psEncC->predictLPCOrder );
NSQ->sLTP_buf_idx = psEncC->ltp_mem_length;
NSQ->rewhite_flag = 1;
}
}
silk_nsq_del_dec_scale_states( psEncC, NSQ, psDelDec, x_Q3, x_sc_Q10, sLTP, sLTP_Q15, k,
psEncC->nStatesDelayedDecision, LTP_scale_Q14, Gains_Q16, pitchL, psIndices->signalType, decisionDelay );
silk_noise_shape_quantizer_del_dec( NSQ, psDelDec, psIndices->signalType, x_sc_Q10, pulses, pxq, sLTP_Q15,
delayedGain_Q10, A_Q12, B_Q14, AR_shp_Q13, lag, HarmShapeFIRPacked_Q14, Tilt_Q14[ k ], LF_shp_Q14[ k ],
Gains_Q16[ k ], Lambda_Q10, offset_Q10, psEncC->subfr_length, subfr++, psEncC->shapingLPCOrder,
psEncC->predictLPCOrder, psEncC->warping_Q16, psEncC->nStatesDelayedDecision, &smpl_buf_idx, decisionDelay );
x_Q3 += psEncC->subfr_length;
pulses += psEncC->subfr_length;
pxq += psEncC->subfr_length;
}
/* Find winner */
RDmin_Q10 = psDelDec[ 0 ].RD_Q10;
Winner_ind = 0;
for( k = 1; k < psEncC->nStatesDelayedDecision; k++ ) {
if( psDelDec[ k ].RD_Q10 < RDmin_Q10 ) {
RDmin_Q10 = psDelDec[ k ].RD_Q10;
Winner_ind = k;
}
}
/* Copy final part of signals from winner state to output and long-term filter states */
psDD = &psDelDec[ Winner_ind ];
psIndices->Seed = psDD->SeedInit;
last_smple_idx = smpl_buf_idx + decisionDelay;
Gain_Q10 = silk_RSHIFT32( Gains_Q16[ psEncC->nb_subfr - 1 ], 6 );
for( i = 0; i < decisionDelay; i++ ) {
last_smple_idx = ( last_smple_idx - 1 ) & DECISION_DELAY_MASK;
pulses[ i - decisionDelay ] = (opus_int8)silk_RSHIFT_ROUND( psDD->Q_Q10[ last_smple_idx ], 10 );
pxq[ i - decisionDelay ] = (opus_int16)silk_SAT16( silk_RSHIFT_ROUND(
silk_SMULWW( psDD->Xq_Q14[ last_smple_idx ], Gain_Q10 ), 8 ) );
NSQ->sLTP_shp_Q14[ NSQ->sLTP_shp_buf_idx - decisionDelay + i ] = psDD->Shape_Q14[ last_smple_idx ];
}
silk_memcpy( NSQ->sLPC_Q14, &psDD->sLPC_Q14[ psEncC->subfr_length ], NSQ_LPC_BUF_LENGTH * sizeof( opus_int32 ) );
silk_memcpy( NSQ->sAR2_Q14, psDD->sAR2_Q14, sizeof( psDD->sAR2_Q14 ) );
/* Update states */
NSQ->sLF_AR_shp_Q14 = psDD->LF_AR_Q14;
NSQ->lagPrev = pitchL[ psEncC->nb_subfr - 1 ];
/* Save quantized speech signal */
/* DEBUG_STORE_DATA( enc.pcm, &NSQ->xq[psEncC->ltp_mem_length], psEncC->frame_length * sizeof( opus_int16 ) ) */
silk_memmove( NSQ->xq, &NSQ->xq[ psEncC->frame_length ], psEncC->ltp_mem_length * sizeof( opus_int16 ) );
silk_memmove( NSQ->sLTP_shp_Q14, &NSQ->sLTP_shp_Q14[ psEncC->frame_length ], psEncC->ltp_mem_length * sizeof( opus_int32 ) );
RESTORE_STACK;
}
/******************************************/
/* Noise shape quantizer for one subframe */
/******************************************/
static OPUS_INLINE void silk_noise_shape_quantizer_del_dec(
silk_nsq_state *NSQ, /* I/O NSQ state */
NSQ_del_dec_struct psDelDec[], /* I/O Delayed decision states */
opus_int signalType, /* I Signal type */
const opus_int32 x_Q10[], /* I */
opus_int8 pulses[], /* O */
opus_int16 xq[], /* O */
opus_int32 sLTP_Q15[], /* I/O LTP filter state */
opus_int32 delayedGain_Q10[], /* I/O Gain delay buffer */
const opus_int16 a_Q12[], /* I Short term prediction coefs */
const opus_int16 b_Q14[], /* I Long term prediction coefs */
const opus_int16 AR_shp_Q13[], /* I Noise shaping coefs */
opus_int lag, /* I Pitch lag */
opus_int32 HarmShapeFIRPacked_Q14, /* I */
opus_int Tilt_Q14, /* I Spectral tilt */
opus_int32 LF_shp_Q14, /* I */
opus_int32 Gain_Q16, /* I */
opus_int Lambda_Q10, /* I */
opus_int offset_Q10, /* I */
opus_int length, /* I Input length */
opus_int subfr, /* I Subframe number */
opus_int shapingLPCOrder, /* I Shaping LPC filter order */
opus_int predictLPCOrder, /* I Prediction filter order */
opus_int warping_Q16, /* I */
opus_int nStatesDelayedDecision, /* I Number of states in decision tree */
opus_int *smpl_buf_idx, /* I Index to newest samples in buffers */
opus_int decisionDelay /* I */
)
{
opus_int i, j, k, Winner_ind, RDmin_ind, RDmax_ind, last_smple_idx;
opus_int32 Winner_rand_state;
opus_int32 LTP_pred_Q14, LPC_pred_Q14, n_AR_Q14, n_LTP_Q14;
opus_int32 n_LF_Q14, r_Q10, rr_Q10, rd1_Q10, rd2_Q10, RDmin_Q10, RDmax_Q10;
opus_int32 q1_Q0, q1_Q10, q2_Q10, exc_Q14, LPC_exc_Q14, xq_Q14, Gain_Q10;
opus_int32 tmp1, tmp2, sLF_AR_shp_Q14;
opus_int32 *pred_lag_ptr, *shp_lag_ptr, *psLPC_Q14;
VARDECL( NSQ_sample_pair, psSampleState );
NSQ_del_dec_struct *psDD;
NSQ_sample_struct *psSS;
SAVE_STACK;
silk_assert( nStatesDelayedDecision > 0 );
ALLOC( psSampleState, nStatesDelayedDecision, NSQ_sample_pair );
shp_lag_ptr = &NSQ->sLTP_shp_Q14[ NSQ->sLTP_shp_buf_idx - lag + HARM_SHAPE_FIR_TAPS / 2 ];
pred_lag_ptr = &sLTP_Q15[ NSQ->sLTP_buf_idx - lag + LTP_ORDER / 2 ];
Gain_Q10 = silk_RSHIFT( Gain_Q16, 6 );
for( i = 0; i < length; i++ ) {
/* Perform common calculations used in all states */
/* Long-term prediction */
if( signalType == TYPE_VOICED ) {
/* Unrolled loop */
/* Avoids introducing a bias because silk_SMLAWB() always rounds to -inf */
LTP_pred_Q14 = 2;
LTP_pred_Q14 = silk_SMLAWB( LTP_pred_Q14, pred_lag_ptr[ 0 ], b_Q14[ 0 ] );
LTP_pred_Q14 = silk_SMLAWB( LTP_pred_Q14, pred_lag_ptr[ -1 ], b_Q14[ 1 ] );
LTP_pred_Q14 = silk_SMLAWB( LTP_pred_Q14, pred_lag_ptr[ -2 ], b_Q14[ 2 ] );
LTP_pred_Q14 = silk_SMLAWB( LTP_pred_Q14, pred_lag_ptr[ -3 ], b_Q14[ 3 ] );
LTP_pred_Q14 = silk_SMLAWB( LTP_pred_Q14, pred_lag_ptr[ -4 ], b_Q14[ 4 ] );
LTP_pred_Q14 = silk_LSHIFT( LTP_pred_Q14, 1 ); /* Q13 -> Q14 */
pred_lag_ptr++;
} else {
LTP_pred_Q14 = 0;
}
/* Long-term shaping */
if( lag > 0 ) {
/* Symmetric, packed FIR coefficients */
n_LTP_Q14 = silk_SMULWB( silk_ADD32( shp_lag_ptr[ 0 ], shp_lag_ptr[ -2 ] ), HarmShapeFIRPacked_Q14 );
n_LTP_Q14 = silk_SMLAWT( n_LTP_Q14, shp_lag_ptr[ -1 ], HarmShapeFIRPacked_Q14 );
n_LTP_Q14 = silk_SUB_LSHIFT32( LTP_pred_Q14, n_LTP_Q14, 2 ); /* Q12 -> Q14 */
shp_lag_ptr++;
} else {
n_LTP_Q14 = 0;
}
for( k = 0; k < nStatesDelayedDecision; k++ ) {
/* Delayed decision state */
psDD = &psDelDec[ k ];
/* Sample state */
psSS = psSampleState[ k ];
/* Generate dither */
psDD->Seed = silk_RAND( psDD->Seed );
/* Pointer used in short term prediction and shaping */
psLPC_Q14 = &psDD->sLPC_Q14[ NSQ_LPC_BUF_LENGTH - 1 + i ];
/* Short-term prediction */
silk_assert( predictLPCOrder == 10 || predictLPCOrder == 16 );
/* Avoids introducing a bias because silk_SMLAWB() always rounds to -inf */
LPC_pred_Q14 = silk_RSHIFT( predictLPCOrder, 1 );
LPC_pred_Q14 = silk_SMLAWB( LPC_pred_Q14, psLPC_Q14[ 0 ], a_Q12[ 0 ] );
LPC_pred_Q14 = silk_SMLAWB( LPC_pred_Q14, psLPC_Q14[ -1 ], a_Q12[ 1 ] );
LPC_pred_Q14 = silk_SMLAWB( LPC_pred_Q14, psLPC_Q14[ -2 ], a_Q12[ 2 ] );
LPC_pred_Q14 = silk_SMLAWB( LPC_pred_Q14, psLPC_Q14[ -3 ], a_Q12[ 3 ] );
LPC_pred_Q14 = silk_SMLAWB( LPC_pred_Q14, psLPC_Q14[ -4 ], a_Q12[ 4 ] );
LPC_pred_Q14 = silk_SMLAWB( LPC_pred_Q14, psLPC_Q14[ -5 ], a_Q12[ 5 ] );
LPC_pred_Q14 = silk_SMLAWB( LPC_pred_Q14, psLPC_Q14[ -6 ], a_Q12[ 6 ] );
LPC_pred_Q14 = silk_SMLAWB( LPC_pred_Q14, psLPC_Q14[ -7 ], a_Q12[ 7 ] );
LPC_pred_Q14 = silk_SMLAWB( LPC_pred_Q14, psLPC_Q14[ -8 ], a_Q12[ 8 ] );
LPC_pred_Q14 = silk_SMLAWB( LPC_pred_Q14, psLPC_Q14[ -9 ], a_Q12[ 9 ] );
if( predictLPCOrder == 16 ) {
LPC_pred_Q14 = silk_SMLAWB( LPC_pred_Q14, psLPC_Q14[ -10 ], a_Q12[ 10 ] );
LPC_pred_Q14 = silk_SMLAWB( LPC_pred_Q14, psLPC_Q14[ -11 ], a_Q12[ 11 ] );
LPC_pred_Q14 = silk_SMLAWB( LPC_pred_Q14, psLPC_Q14[ -12 ], a_Q12[ 12 ] );
LPC_pred_Q14 = silk_SMLAWB( LPC_pred_Q14, psLPC_Q14[ -13 ], a_Q12[ 13 ] );
LPC_pred_Q14 = silk_SMLAWB( LPC_pred_Q14, psLPC_Q14[ -14 ], a_Q12[ 14 ] );
LPC_pred_Q14 = silk_SMLAWB( LPC_pred_Q14, psLPC_Q14[ -15 ], a_Q12[ 15 ] );
}
LPC_pred_Q14 = silk_LSHIFT( LPC_pred_Q14, 4 ); /* Q10 -> Q14 */
/* Noise shape feedback */
silk_assert( ( shapingLPCOrder & 1 ) == 0 ); /* check that order is even */
/* Output of lowpass section */
tmp2 = silk_SMLAWB( psLPC_Q14[ 0 ], psDD->sAR2_Q14[ 0 ], warping_Q16 );
/* Output of allpass section */
tmp1 = silk_SMLAWB( psDD->sAR2_Q14[ 0 ], psDD->sAR2_Q14[ 1 ] - tmp2, warping_Q16 );
psDD->sAR2_Q14[ 0 ] = tmp2;
n_AR_Q14 = silk_RSHIFT( shapingLPCOrder, 1 );
n_AR_Q14 = silk_SMLAWB( n_AR_Q14, tmp2, AR_shp_Q13[ 0 ] );
/* Loop over allpass sections */
for( j = 2; j < shapingLPCOrder; j += 2 ) {
/* Output of allpass section */
tmp2 = silk_SMLAWB( psDD->sAR2_Q14[ j - 1 ], psDD->sAR2_Q14[ j + 0 ] - tmp1, warping_Q16 );
psDD->sAR2_Q14[ j - 1 ] = tmp1;
n_AR_Q14 = silk_SMLAWB( n_AR_Q14, tmp1, AR_shp_Q13[ j - 1 ] );
/* Output of allpass section */
tmp1 = silk_SMLAWB( psDD->sAR2_Q14[ j + 0 ], psDD->sAR2_Q14[ j + 1 ] - tmp2, warping_Q16 );
psDD->sAR2_Q14[ j + 0 ] = tmp2;
n_AR_Q14 = silk_SMLAWB( n_AR_Q14, tmp2, AR_shp_Q13[ j ] );
}
psDD->sAR2_Q14[ shapingLPCOrder - 1 ] = tmp1;
n_AR_Q14 = silk_SMLAWB( n_AR_Q14, tmp1, AR_shp_Q13[ shapingLPCOrder - 1 ] );
n_AR_Q14 = silk_LSHIFT( n_AR_Q14, 1 ); /* Q11 -> Q12 */
n_AR_Q14 = silk_SMLAWB( n_AR_Q14, psDD->LF_AR_Q14, Tilt_Q14 ); /* Q12 */
n_AR_Q14 = silk_LSHIFT( n_AR_Q14, 2 ); /* Q12 -> Q14 */
n_LF_Q14 = silk_SMULWB( psDD->Shape_Q14[ *smpl_buf_idx ], LF_shp_Q14 ); /* Q12 */
n_LF_Q14 = silk_SMLAWT( n_LF_Q14, psDD->LF_AR_Q14, LF_shp_Q14 ); /* Q12 */
n_LF_Q14 = silk_LSHIFT( n_LF_Q14, 2 ); /* Q12 -> Q14 */
/* Input minus prediction plus noise feedback */
/* r = x[ i ] - LTP_pred - LPC_pred + n_AR + n_Tilt + n_LF + n_LTP */
tmp1 = silk_ADD32( n_AR_Q14, n_LF_Q14 ); /* Q14 */
tmp2 = silk_ADD32( n_LTP_Q14, LPC_pred_Q14 ); /* Q13 */
tmp1 = silk_SUB32( tmp2, tmp1 ); /* Q13 */
tmp1 = silk_RSHIFT_ROUND( tmp1, 4 ); /* Q10 */
r_Q10 = silk_SUB32( x_Q10[ i ], tmp1 ); /* residual error Q10 */
/* Flip sign depending on dither */
if ( psDD->Seed < 0 ) {
r_Q10 = -r_Q10;
}
r_Q10 = silk_LIMIT_32( r_Q10, -(31 << 10), 30 << 10 );
/* Find two quantization level candidates and measure their rate-distortion */
q1_Q10 = silk_SUB32( r_Q10, offset_Q10 );
q1_Q0 = silk_RSHIFT( q1_Q10, 10 );
if( q1_Q0 > 0 ) {
q1_Q10 = silk_SUB32( silk_LSHIFT( q1_Q0, 10 ), QUANT_LEVEL_ADJUST_Q10 );
q1_Q10 = silk_ADD32( q1_Q10, offset_Q10 );
q2_Q10 = silk_ADD32( q1_Q10, 1024 );
rd1_Q10 = silk_SMULBB( q1_Q10, Lambda_Q10 );
rd2_Q10 = silk_SMULBB( q2_Q10, Lambda_Q10 );
} else if( q1_Q0 == 0 ) {
q1_Q10 = offset_Q10;
q2_Q10 = silk_ADD32( q1_Q10, 1024 - QUANT_LEVEL_ADJUST_Q10 );
rd1_Q10 = silk_SMULBB( q1_Q10, Lambda_Q10 );
rd2_Q10 = silk_SMULBB( q2_Q10, Lambda_Q10 );
} else if( q1_Q0 == -1 ) {
q2_Q10 = offset_Q10;
q1_Q10 = silk_SUB32( q2_Q10, 1024 - QUANT_LEVEL_ADJUST_Q10 );
rd1_Q10 = silk_SMULBB( -q1_Q10, Lambda_Q10 );
rd2_Q10 = silk_SMULBB( q2_Q10, Lambda_Q10 );
} else { /* q1_Q0 < -1 */
q1_Q10 = silk_ADD32( silk_LSHIFT( q1_Q0, 10 ), QUANT_LEVEL_ADJUST_Q10 );
q1_Q10 = silk_ADD32( q1_Q10, offset_Q10 );
q2_Q10 = silk_ADD32( q1_Q10, 1024 );
rd1_Q10 = silk_SMULBB( -q1_Q10, Lambda_Q10 );
rd2_Q10 = silk_SMULBB( -q2_Q10, Lambda_Q10 );
}
rr_Q10 = silk_SUB32( r_Q10, q1_Q10 );
rd1_Q10 = silk_RSHIFT( silk_SMLABB( rd1_Q10, rr_Q10, rr_Q10 ), 10 );
rr_Q10 = silk_SUB32( r_Q10, q2_Q10 );
rd2_Q10 = silk_RSHIFT( silk_SMLABB( rd2_Q10, rr_Q10, rr_Q10 ), 10 );
if( rd1_Q10 < rd2_Q10 ) {
psSS[ 0 ].RD_Q10 = silk_ADD32( psDD->RD_Q10, rd1_Q10 );
psSS[ 1 ].RD_Q10 = silk_ADD32( psDD->RD_Q10, rd2_Q10 );
psSS[ 0 ].Q_Q10 = q1_Q10;
psSS[ 1 ].Q_Q10 = q2_Q10;
} else {
psSS[ 0 ].RD_Q10 = silk_ADD32( psDD->RD_Q10, rd2_Q10 );
psSS[ 1 ].RD_Q10 = silk_ADD32( psDD->RD_Q10, rd1_Q10 );
psSS[ 0 ].Q_Q10 = q2_Q10;
psSS[ 1 ].Q_Q10 = q1_Q10;
}
/* Update states for best quantization */
/* Quantized excitation */
exc_Q14 = silk_LSHIFT32( psSS[ 0 ].Q_Q10, 4 );
if ( psDD->Seed < 0 ) {
exc_Q14 = -exc_Q14;
}
/* Add predictions */
LPC_exc_Q14 = silk_ADD32( exc_Q14, LTP_pred_Q14 );
xq_Q14 = silk_ADD32( LPC_exc_Q14, LPC_pred_Q14 );
/* Update states */
sLF_AR_shp_Q14 = silk_SUB32( xq_Q14, n_AR_Q14 );
psSS[ 0 ].sLTP_shp_Q14 = silk_SUB32( sLF_AR_shp_Q14, n_LF_Q14 );
psSS[ 0 ].LF_AR_Q14 = sLF_AR_shp_Q14;
psSS[ 0 ].LPC_exc_Q14 = LPC_exc_Q14;
psSS[ 0 ].xq_Q14 = xq_Q14;
/* Update states for second best quantization */
/* Quantized excitation */
exc_Q14 = silk_LSHIFT32( psSS[ 1 ].Q_Q10, 4 );
if ( psDD->Seed < 0 ) {
exc_Q14 = -exc_Q14;
}
/* Add predictions */
LPC_exc_Q14 = silk_ADD32( exc_Q14, LTP_pred_Q14 );
xq_Q14 = silk_ADD32( LPC_exc_Q14, LPC_pred_Q14 );
/* Update states */
sLF_AR_shp_Q14 = silk_SUB32( xq_Q14, n_AR_Q14 );
psSS[ 1 ].sLTP_shp_Q14 = silk_SUB32( sLF_AR_shp_Q14, n_LF_Q14 );
psSS[ 1 ].LF_AR_Q14 = sLF_AR_shp_Q14;
psSS[ 1 ].LPC_exc_Q14 = LPC_exc_Q14;
psSS[ 1 ].xq_Q14 = xq_Q14;
}
*smpl_buf_idx = ( *smpl_buf_idx - 1 ) & DECISION_DELAY_MASK; /* Index to newest samples */
last_smple_idx = ( *smpl_buf_idx + decisionDelay ) & DECISION_DELAY_MASK; /* Index to decisionDelay old samples */
/* Find winner */
RDmin_Q10 = psSampleState[ 0 ][ 0 ].RD_Q10;
Winner_ind = 0;
for( k = 1; k < nStatesDelayedDecision; k++ ) {
if( psSampleState[ k ][ 0 ].RD_Q10 < RDmin_Q10 ) {
RDmin_Q10 = psSampleState[ k ][ 0 ].RD_Q10;
Winner_ind = k;
}
}
/* Increase RD values of expired states */
Winner_rand_state = psDelDec[ Winner_ind ].RandState[ last_smple_idx ];
for( k = 0; k < nStatesDelayedDecision; k++ ) {
if( psDelDec[ k ].RandState[ last_smple_idx ] != Winner_rand_state ) {
psSampleState[ k ][ 0 ].RD_Q10 = silk_ADD32( psSampleState[ k ][ 0 ].RD_Q10, silk_int32_MAX >> 4 );
psSampleState[ k ][ 1 ].RD_Q10 = silk_ADD32( psSampleState[ k ][ 1 ].RD_Q10, silk_int32_MAX >> 4 );
silk_assert( psSampleState[ k ][ 0 ].RD_Q10 >= 0 );
}
}
/* Find worst in first set and best in second set */
RDmax_Q10 = psSampleState[ 0 ][ 0 ].RD_Q10;
RDmin_Q10 = psSampleState[ 0 ][ 1 ].RD_Q10;
RDmax_ind = 0;
RDmin_ind = 0;
for( k = 1; k < nStatesDelayedDecision; k++ ) {
/* find worst in first set */
if( psSampleState[ k ][ 0 ].RD_Q10 > RDmax_Q10 ) {
RDmax_Q10 = psSampleState[ k ][ 0 ].RD_Q10;
RDmax_ind = k;
}
/* find best in second set */
if( psSampleState[ k ][ 1 ].RD_Q10 < RDmin_Q10 ) {
RDmin_Q10 = psSampleState[ k ][ 1 ].RD_Q10;
RDmin_ind = k;
}
}
/* Replace a state if best from second set outperforms worst in first set */
if( RDmin_Q10 < RDmax_Q10 ) {
silk_memcpy( ( (opus_int32 *)&psDelDec[ RDmax_ind ] ) + i,
( (opus_int32 *)&psDelDec[ RDmin_ind ] ) + i, sizeof( NSQ_del_dec_struct ) - i * sizeof( opus_int32) );
silk_memcpy( &psSampleState[ RDmax_ind ][ 0 ], &psSampleState[ RDmin_ind ][ 1 ], sizeof( NSQ_sample_struct ) );
}
/* Write samples from winner to output and long-term filter states */
psDD = &psDelDec[ Winner_ind ];
if( subfr > 0 || i >= decisionDelay ) {
pulses[ i - decisionDelay ] = (opus_int8)silk_RSHIFT_ROUND( psDD->Q_Q10[ last_smple_idx ], 10 );
xq[ i - decisionDelay ] = (opus_int16)silk_SAT16( silk_RSHIFT_ROUND(
silk_SMULWW( psDD->Xq_Q14[ last_smple_idx ], delayedGain_Q10[ last_smple_idx ] ), 8 ) );
NSQ->sLTP_shp_Q14[ NSQ->sLTP_shp_buf_idx - decisionDelay ] = psDD->Shape_Q14[ last_smple_idx ];
sLTP_Q15[ NSQ->sLTP_buf_idx - decisionDelay ] = psDD->Pred_Q15[ last_smple_idx ];
}
NSQ->sLTP_shp_buf_idx++;
NSQ->sLTP_buf_idx++;
/* Update states */
for( k = 0; k < nStatesDelayedDecision; k++ ) {
psDD = &psDelDec[ k ];
psSS = &psSampleState[ k ][ 0 ];
psDD->LF_AR_Q14 = psSS->LF_AR_Q14;
psDD->sLPC_Q14[ NSQ_LPC_BUF_LENGTH + i ] = psSS->xq_Q14;
psDD->Xq_Q14[ *smpl_buf_idx ] = psSS->xq_Q14;
psDD->Q_Q10[ *smpl_buf_idx ] = psSS->Q_Q10;
psDD->Pred_Q15[ *smpl_buf_idx ] = silk_LSHIFT32( psSS->LPC_exc_Q14, 1 );
psDD->Shape_Q14[ *smpl_buf_idx ] = psSS->sLTP_shp_Q14;
psDD->Seed = silk_ADD32_ovflw( psDD->Seed, silk_RSHIFT_ROUND( psSS->Q_Q10, 10 ) );
psDD->RandState[ *smpl_buf_idx ] = psDD->Seed;
psDD->RD_Q10 = psSS->RD_Q10;
}
delayedGain_Q10[ *smpl_buf_idx ] = Gain_Q10;
}
/* Update LPC states */
for( k = 0; k < nStatesDelayedDecision; k++ ) {
psDD = &psDelDec[ k ];
silk_memcpy( psDD->sLPC_Q14, &psDD->sLPC_Q14[ length ], NSQ_LPC_BUF_LENGTH * sizeof( opus_int32 ) );
}
RESTORE_STACK;
}
static OPUS_INLINE void silk_nsq_del_dec_scale_states(
const silk_encoder_state *psEncC, /* I Encoder State */
silk_nsq_state *NSQ, /* I/O NSQ state */
NSQ_del_dec_struct psDelDec[], /* I/O Delayed decision states */
const opus_int32 x_Q3[], /* I Input in Q3 */
opus_int32 x_sc_Q10[], /* O Input scaled with 1/Gain in Q10 */
const opus_int16 sLTP[], /* I Re-whitened LTP state in Q0 */
opus_int32 sLTP_Q15[], /* O LTP state matching scaled input */
opus_int subfr, /* I Subframe number */
opus_int nStatesDelayedDecision, /* I Number of del dec states */
const opus_int LTP_scale_Q14, /* I LTP state scaling */
const opus_int32 Gains_Q16[ MAX_NB_SUBFR ], /* I */
const opus_int pitchL[ MAX_NB_SUBFR ], /* I Pitch lag */
const opus_int signal_type, /* I Signal type */
const opus_int decisionDelay /* I Decision delay */
)
{
opus_int i, k, lag;
opus_int32 gain_adj_Q16, inv_gain_Q31, inv_gain_Q23;
NSQ_del_dec_struct *psDD;
lag = pitchL[ subfr ];
inv_gain_Q31 = silk_INVERSE32_varQ( silk_max( Gains_Q16[ subfr ], 1 ), 47 );
silk_assert( inv_gain_Q31 != 0 );
/* Calculate gain adjustment factor */
if( Gains_Q16[ subfr ] != NSQ->prev_gain_Q16 ) {
gain_adj_Q16 = silk_DIV32_varQ( NSQ->prev_gain_Q16, Gains_Q16[ subfr ], 16 );
} else {
gain_adj_Q16 = (opus_int32)1 << 16;
}
/* Scale input */
inv_gain_Q23 = silk_RSHIFT_ROUND( inv_gain_Q31, 8 );
for( i = 0; i < psEncC->subfr_length; i++ ) {
x_sc_Q10[ i ] = silk_SMULWW( x_Q3[ i ], inv_gain_Q23 );
}
/* Save inverse gain */
NSQ->prev_gain_Q16 = Gains_Q16[ subfr ];
/* After rewhitening the LTP state is un-scaled, so scale with inv_gain_Q16 */
if( NSQ->rewhite_flag ) {
if( subfr == 0 ) {
/* Do LTP downscaling */
inv_gain_Q31 = silk_LSHIFT( silk_SMULWB( inv_gain_Q31, LTP_scale_Q14 ), 2 );
}
for( i = NSQ->sLTP_buf_idx - lag - LTP_ORDER / 2; i < NSQ->sLTP_buf_idx; i++ ) {
silk_assert( i < MAX_FRAME_LENGTH );
sLTP_Q15[ i ] = silk_SMULWB( inv_gain_Q31, sLTP[ i ] );
}
}
/* Adjust for changing gain */
if( gain_adj_Q16 != (opus_int32)1 << 16 ) {
/* Scale long-term shaping state */
for( i = NSQ->sLTP_shp_buf_idx - psEncC->ltp_mem_length; i < NSQ->sLTP_shp_buf_idx; i++ ) {
NSQ->sLTP_shp_Q14[ i ] = silk_SMULWW( gain_adj_Q16, NSQ->sLTP_shp_Q14[ i ] );
}
/* Scale long-term prediction state */
if( signal_type == TYPE_VOICED && NSQ->rewhite_flag == 0 ) {
for( i = NSQ->sLTP_buf_idx - lag - LTP_ORDER / 2; i < NSQ->sLTP_buf_idx - decisionDelay; i++ ) {
sLTP_Q15[ i ] = silk_SMULWW( gain_adj_Q16, sLTP_Q15[ i ] );
}
}
for( k = 0; k < nStatesDelayedDecision; k++ ) {
psDD = &psDelDec[ k ];
/* Scale scalar states */
psDD->LF_AR_Q14 = silk_SMULWW( gain_adj_Q16, psDD->LF_AR_Q14 );
/* Scale short-term prediction and shaping states */
for( i = 0; i < NSQ_LPC_BUF_LENGTH; i++ ) {
psDD->sLPC_Q14[ i ] = silk_SMULWW( gain_adj_Q16, psDD->sLPC_Q14[ i ] );
}
for( i = 0; i < MAX_SHAPE_LPC_ORDER; i++ ) {
psDD->sAR2_Q14[ i ] = silk_SMULWW( gain_adj_Q16, psDD->sAR2_Q14[ i ] );
}
for( i = 0; i < DECISION_DELAY; i++ ) {
psDD->Pred_Q15[ i ] = silk_SMULWW( gain_adj_Q16, psDD->Pred_Q15[ i ] );
psDD->Shape_Q14[ i ] = silk_SMULWW( gain_adj_Q16, psDD->Shape_Q14[ i ] );
}
}
}
}

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