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73 lines
2.2 KiB
C
73 lines
2.2 KiB
C
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/*
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* Copyright (c) 2006 Ryan Martell. (rdm4@martellventures.com)
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVUTIL_BASE64_H
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#define AVUTIL_BASE64_H
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#include <stdint.h>
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/**
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* @defgroup lavu_base64 Base64
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* @ingroup lavu_crypto
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* @{
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*/
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/**
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* Decode a base64-encoded string.
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*
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* @param out buffer for decoded data
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* @param in null-terminated input string
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* @param out_size size in bytes of the out buffer, must be at
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* least 3/4 of the length of in, that is AV_BASE64_DECODE_SIZE(strlen(in))
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* @return number of bytes written, or a negative value in case of
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* invalid input
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*/
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int av_base64_decode(uint8_t *out, const char *in, int out_size);
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/**
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* Calculate the output size in bytes needed to decode a base64 string
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* with length x to a data buffer.
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*/
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#define AV_BASE64_DECODE_SIZE(x) ((x) * 3LL / 4)
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/**
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* Encode data to base64 and null-terminate.
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*
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* @param out buffer for encoded data
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* @param out_size size in bytes of the out buffer (including the
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* null terminator), must be at least AV_BASE64_SIZE(in_size)
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* @param in input buffer containing the data to encode
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* @param in_size size in bytes of the in buffer
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* @return out or NULL in case of error
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*/
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char *av_base64_encode(char *out, int out_size, const uint8_t *in, int in_size);
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/**
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* Calculate the output size needed to base64-encode x bytes to a
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* null-terminated string.
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*/
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#define AV_BASE64_SIZE(x) (((x)+2) / 3 * 4 + 1)
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/**
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* @}
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*/
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#endif /* AVUTIL_BASE64_H */
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