cmake_minimum_required(VERSION 3.21)

if (NOT FFMPEG_FIND_COMPONENTS)
    set(FFMPEG_FIND_COMPONENTS
        AVCODEC
        AVDEVICE
        AVFILTER
        AVFORMAT
        AVUTIL
        POSTPROC
        SWRESAMPLE
        SWSCALE
    )
endif()

find_path(FFMPEG_INCLUDE_DIR
    NAMES
    libavcodec
    libavdevice
    libavfilter
    libavformat
    libavutil
    libpostproc
    libswresample
    libswscale
)

foreach (component ${FFMPEG_FIND_COMPONENTS})
    string(TOLOWER ${component} library)
    find_library(FFMPEG_${component}_LIBRARY ${library})
endforeach()

if (WIN32)
    #set(bin_path "${FFMPEG_INCLUDE_DIR}/../bin")
    # TODO: Copy DLLs
endif()

include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(FFmpeg
    REQUIRED_VARS
    FFMPEG_INCLUDE_DIR
    FFMPEG_AVCODEC_LIBRARY
    FFMPEG_AVDEVICE_LIBRARY
    FFMPEG_AVFILTER_LIBRARY
    FFMPEG_AVFORMAT_LIBRARY
    FFMPEG_AVUTIL_LIBRARY
    FFMPEG_POSTPROC_LIBRARY
    FFMPEG_SWRESAMPLE_LIBRARY
    FFMPEG_SWSCALE_LIBRARY
)

mark_as_advanced(
    FFMPEG_INCLUDE_DIR
    FFMPEG_AVCODEC_LIBRARY
    FFMPEG_AVDEVICE_LIBRARY
    FFMPEG_AVFILTER_LIBRARY
    FFMPEG_AVFORMAT_LIBRARY
    FFMPEG_AVUTIL_LIBRARY
    FFMPEG_POSTPROC_LIBRARY
    FFMPEG_SWRESAMPLE_LIBRARY
    FFMPEG_SWSCALE_LIBRARY
)