ddnet/cmake/FindFFmpeg.cmake

if(NOT CMAKE_CROSSCOMPILING)
  find_package(PkgConfig QUIET)
  pkg_check_modules(PC_AVCODEC libavcodec)
  pkg_check_modules(PC_AVFORMAT libavformat)
  pkg_check_modules(PC_AVUTIL libavutil)
  pkg_check_modules(PC_SWSCALE libswscale)
  pkg_check_modules(PC_SWRESAMPLE libswresample)
endif()

set_extra_dirs_lib(FFMPEG ffmpeg)
find_library(AVCODEC_LIBRARY
  NAMES avcodec libavcodec
  HINTS ${HINTS_FFMPEG_LIBDIR} ${PC_AVCODEC_LIBRARY_DIRS}
  PATHS ${PATHS_AVCODEC_LIBDIR}
  ${CROSSCOMPILING_NO_CMAKE_SYSTEM_PATH}
)

find_library(AVFORMAT_LIBRARY
  NAMES avformat libavformat
  HINTS ${HINTS_FFMPEG_LIBDIR} ${PC_AVFORMAT_LIBRARY_DIRS}
  PATHS ${PATHS_AVFORMAT_LIBDIR}
  ${CROSSCOMPILING_NO_CMAKE_SYSTEM_PATH}
)

find_library(AVUTIL_LIBRARY
  NAMES avutil libavutil
  HINTS ${HINTS_FFMPEG_LIBDIR} ${PC_AVUTIL_LIBRARY_DIRS}
  PATHS ${PATHS_AVUTIL_LIBDIR}
  ${CROSSCOMPILING_NO_CMAKE_SYSTEM_PATH}
)

find_library(SWSCALE_LIBRARY
  NAMES swscale libswscale
  HINTS ${HINTS_FFMPEG_LIBDIR} ${PC_SWSCALE_LIBRARY_DIRS}
  PATHS ${PATHS_SWSCALE_LIBDIR}
  ${CROSSCOMPILING_NO_CMAKE_SYSTEM_PATH}
)

find_library(SWRESAMPLE_LIBRARY
  NAMES swresample libswresample
  HINTS ${HINTS_FFMPEG_LIBDIR} ${PC_SWRESAMPLE_LIBRARY_DIRS}
  PATHS ${PATHS_SWRESAMPLE_LIBDIR}
  ${CROSSCOMPILING_NO_CMAKE_SYSTEM_PATH}
)

set_extra_dirs_include(AVCODEC ffmpeg "${AVCODEC_LIBRARY}")
find_path(AVCODEC_INCLUDEDIR libavcodec
  HINTS ${HINTS_AVCODEC_INCLUDEDIR} ${PC_AVCODEC_INCLUDE_DIRS}
  PATHS ${PATHS_AVCODEC_INCLUDEDIR}
  ${CROSSCOMPILING_NO_CMAKE_SYSTEM_PATH}
)

set_extra_dirs_include(AVFORMAT ffmpeg "${AVFORMAT_LIBRARY}")
find_path(AVFORMAT_INCLUDEDIR libavformat
  HINTS ${HINTS_AVFORMAT_INCLUDEDIR} ${PC_AVFORMAT_INCLUDE_DIRS}
  PATHS ${PATHS_AVFORMAT_INCLUDEDIR}
  ${CROSSCOMPILING_NO_CMAKE_SYSTEM_PATH}
)

set_extra_dirs_include(AVUTIL ffmpeg "${AVUTIL_LIBRARY}")
find_path(AVUTIL_INCLUDEDIR libavutil
  HINTS ${HINTS_AVUTIL_INCLUDEDIR} ${PC_AVUTIL_INCLUDE_DIRS}
  PATHS ${PATHS_AVUTIL_INCLUDEDIR}
  ${CROSSCOMPILING_NO_CMAKE_SYSTEM_PATH}
)

set_extra_dirs_include(SWSCALE ffmpeg "${SWSCALE_LIBRARY}")
find_path(SWSCALE_INCLUDEDIR libswscale
  HINTS ${HINTS_SWSCALE_INCLUDEDIR} ${PC_SWSCALE_INCLUDE_DIRS}
  PATHS ${PATHS_SWSCALE_INCLUDEDIR}
  ${CROSSCOMPILING_NO_CMAKE_SYSTEM_PATH}
)

set_extra_dirs_include(SWRESAMPLE ffmpeg "${SWRESAMPLE_LIBRARY}")
find_path(SWRESAMPLE_INCLUDEDIR libswresample
  HINTS ${HINTS_SWRESAMPLE_INCLUDEDIR} ${PC_SWRESAMPLE_INCLUDE_DIRS}
  PATHS ${PATHS_SWRESAMPLE_INCLUDEDIR}
  ${CROSSCOMPILING_NO_CMAKE_SYSTEM_PATH}
)

include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(FFMPEG DEFAULT_MSG
  AVCODEC_LIBRARY
  AVFORMAT_LIBRARY
  AVUTIL_LIBRARY
  SWSCALE_LIBRARY
  SWRESAMPLE_LIBRARY
  AVCODEC_INCLUDEDIR
  AVFORMAT_INCLUDEDIR
  AVUTIL_INCLUDEDIR
  SWSCALE_INCLUDEDIR
  SWRESAMPLE_INCLUDEDIR
)

mark_as_advanced(
  AVCODEC_LIBRARY
  AVFORMAT_LIBRARY
  AVUTIL_LIBRARY
  SWSCALE_LIBRARY
  SWRESAMPLE_LIBRARY
  AVCODEC_INCLUDEDIR
  AVFORMAT_INCLUDEDIR
  AVUTIL_INCLUDEDIR
  SWSCALE_INCLUDEDIR
  SWRESAMPLE_INCLUDEDIR
)

set(FFMPEG_LIBRARIES 
  ${AVCODEC_LIBRARY}
  ${AVFORMAT_LIBRARY}
  ${AVUTIL_LIBRARY}
  ${SWSCALE_LIBRARY}
  ${SWRESAMPLE_LIBRARY}
)

set(FFMPEG_INCLUDE_DIRS
  ${AVCODEC_INCLUDEDIR}
  ${AVFORMAT_INCLUDEDIR}
  ${AVUTIL_INCLUDEDIR}
  ${SWSCALE_INCLUDEDIR}
  ${SWRESAMPLE_INCLUDEDIR}
)

is_bundled(IS_BUNDLED "${AVCODEC_LIBRARY}")
if(IS_BUNDLED AND TARGET_OS STREQUAL "windows")
  set(FFMPEG_COPY_FILES
    "${EXTRA_FFMPEG_LIBDIR}/avcodec-57.dll"
    "${EXTRA_FFMPEG_LIBDIR}/avdevice-57.dll"
    "${EXTRA_FFMPEG_LIBDIR}/avfilter-6.dll"
    "${EXTRA_FFMPEG_LIBDIR}/avformat-57.dll"
    "${EXTRA_FFMPEG_LIBDIR}/avutil-55.dll"
    "${EXTRA_FFMPEG_LIBDIR}/postproc-54.dll"
    "${EXTRA_FFMPEG_LIBDIR}/swresample-2.dll"
    "${EXTRA_FFMPEG_LIBDIR}/swscale-4.dll"
  )
else()
  set(FFMPEG_COPY_FILES)
endif()