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# FindFFMPEG
# --------
# Finds FFmpeg libraries
#
# This module will first look for the required library versions on the system.
# If they are not found, it will fall back to downloading and building kodi's own version
#
# --------
# the following variables influence behaviour:
# ENABLE_INTERNAL_FFMPEG - if enabled, kodi's own version will always be built
#
# FFMPEG_PATH - use external ffmpeg not found in system paths
# usage: -DFFMPEG_PATH=/path/to/ffmpeg_install_prefix
#
# WITH_FFMPEG - use external ffmpeg not found in system paths
# WARNING: this option is for developers as it will _disable ffmpeg version checks_!
# Consider using FFMPEG_PATH instead, which _does_ check library versions
# usage: -DWITH_FFMPEG=/path/to/ffmpeg_install_prefix
#
# --------
# This module will define the following variables:
#
# FFMPEG_FOUND - system has FFmpeg
# FFMPEG_INCLUDE_DIRS - FFmpeg include directory
# FFMPEG_LIBRARIES - FFmpeg libraries
# FFMPEG_DEFINITIONS - pre-processor definitions
# FFMPEG_LDFLAGS - linker flags
#
# and the following imported targets::
#
# ffmpeg - The FFmpeg libraries
# --------
#
# required ffmpeg library versions
set(REQUIRED_FFMPEG_VERSION 4.0)
set(_avcodec_ver ">=58.18.100")
set(_avfilter_ver ">=7.16.100")
set(_avformat_ver ">=58.12.100")
set(_avutil_ver ">=56.14.100")
set(_swscale_ver ">=5.1.100")
set(_swresample_ver ">=3.1.100")
set(_postproc_ver ">=55.1.100")
# Allows building with external ffmpeg not found in system paths,
# without library version checks
if(WITH_FFMPEG)
set(FFMPEG_PATH ${WITH_FFMPEG})
message(STATUS "Warning: FFmpeg version checking disabled")
set(REQUIRED_FFMPEG_VERSION undef)
unset(_avcodec_ver)
unset(_avfilter_ver)
unset(_avformat_ver)
unset(_avutil_ver)
unset(_swscale_ver)
unset(_swresample_ver)
unset(_postproc_ver)
endif()
# Allows building with external ffmpeg not found in system paths,
# with library version checks
if(FFMPEG_PATH)
set(ENABLE_INTERNAL_FFMPEG OFF)
endif()
# external FFMPEG
if(NOT ENABLE_INTERNAL_FFMPEG OR KODI_DEPENDSBUILD)
if(FFMPEG_PATH)
list(APPEND CMAKE_PREFIX_PATH ${FFMPEG_PATH})
endif()
set(FFMPEG_PKGS libavcodec${_avcodec_ver}
libavfilter${_avfilter_ver}
libavformat${_avformat_ver}
libavutil${_avutil_ver}
libswscale${_swscale_ver}
libswresample${_swresample_ver}
libpostproc${_postproc_ver})
if(PKG_CONFIG_FOUND)
pkg_check_modules(PC_FFMPEG ${FFMPEG_PKGS} QUIET)
string(REGEX REPLACE "framework;" "framework " PC_FFMPEG_LDFLAGS "${PC_FFMPEG_LDFLAGS}")
endif()
find_path(FFMPEG_INCLUDE_DIRS libavcodec/avcodec.h libavfilter/avfilter.h libavformat/avformat.h
libavutil/avutil.h libswscale/swscale.h libpostproc/postprocess.h
PATH_SUFFIXES ffmpeg
PATHS ${PC_FFMPEG_INCLUDE_DIRS}
NO_DEFAULT_PATH)
find_path(FFMPEG_INCLUDE_DIRS libavcodec/avcodec.h libavfilter/avfilter.h libavformat/avformat.h
libavutil/avutil.h libswscale/swscale.h libpostproc/postprocess.h)
find_library(FFMPEG_LIBAVCODEC
NAMES avcodec libavcodec
PATH_SUFFIXES ffmpeg/libavcodec
PATHS ${PC_FFMPEG_libavcodec_LIBDIR}
NO_DEFAULT_PATH)
find_library(FFMPEG_LIBAVCODEC NAMES avcodec libavcodec PATH_SUFFIXES ffmpeg/libavcodec)
find_library(FFMPEG_LIBAVFILTER
NAMES avfilter libavfilter
PATH_SUFFIXES ffmpeg/libavfilter
PATHS ${PC_FFMPEG_libavfilter_LIBDIR}
NO_DEFAULT_PATH)
find_library(FFMPEG_LIBAVFILTER NAMES avfilter libavfilter PATH_SUFFIXES ffmpeg/libavfilter)
find_library(FFMPEG_LIBAVFORMAT
NAMES avformat libavformat
PATH_SUFFIXES ffmpeg/libavformat
PATHS ${PC_FFMPEG_libavformat_LIBDIR}
NO_DEFAULT_PATH)
find_library(FFMPEG_LIBAVFORMAT NAMES avformat libavformat PATH_SUFFIXES ffmpeg/libavformat)
find_library(FFMPEG_LIBAVUTIL
NAMES avutil libavutil
PATH_SUFFIXES ffmpeg/libavutil
PATHS ${PC_FFMPEG_libavutil_LIBDIR}
NO_DEFAULT_PATH)
find_library(FFMPEG_LIBAVUTIL NAMES avutil libavutil PATH_SUFFIXES ffmpeg/libavutil)
find_library(FFMPEG_LIBSWSCALE
NAMES swscale libswscale
PATH_SUFFIXES ffmpeg/libswscale
PATHS ${PC_FFMPEG_libswscale_LIBDIR}
NO_DEFAULT_PATH)
find_library(FFMPEG_LIBSWSCALE NAMES swscale libswscale PATH_SUFFIXES ffmpeg/libswscale)
find_library(FFMPEG_LIBSWRESAMPLE
NAMES swresample libswresample
PATH_SUFFIXES ffmpeg/libswresample
PATHS ${PC_FFMPEG_libswresample_LIBDIR}
NO_DEFAULT_PATH)
find_library(FFMPEG_LIBSWRESAMPLE NAMES NAMES swresample libswresample PATH_SUFFIXES ffmpeg/libswresample)
find_library(FFMPEG_LIBPOSTPROC
NAMES postproc libpostproc
PATH_SUFFIXES ffmpeg/libpostproc
PATHS ${PC_FFMPEG_libpostproc_LIBDIR}
NO_DEFAULT_PATH)
find_library(FFMPEG_LIBPOSTPROC NAMES postproc libpostproc PATH_SUFFIXES ffmpeg/libpostproc)
if((PC_FFMPEG_FOUND
AND PC_FFMPEG_libavcodec_VERSION
AND PC_FFMPEG_libavfilter_VERSION
AND PC_FFMPEG_libavformat_VERSION
AND PC_FFMPEG_libavutil_VERSION
AND PC_FFMPEG_libswscale_VERSION
AND PC_FFMPEG_libswresample_VERSION
AND PC_FFMPEG_libpostproc_VERSION)
OR WIN32)
set(FFMPEG_VERSION ${REQUIRED_FFMPEG_VERSION})
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(FFMPEG
VERSION_VAR FFMPEG_VERSION
REQUIRED_VARS FFMPEG_INCLUDE_DIRS
FFMPEG_LIBAVCODEC
FFMPEG_LIBAVFILTER
FFMPEG_LIBAVFORMAT
FFMPEG_LIBAVUTIL
FFMPEG_LIBSWSCALE
FFMPEG_LIBSWRESAMPLE
FFMPEG_LIBPOSTPROC
FFMPEG_VERSION
FAIL_MESSAGE "FFmpeg ${REQUIRED_FFMPEG_VERSION} not found, please consider using -DENABLE_INTERNAL_FFMPEG=ON")
else()
message(STATUS "FFmpeg ${REQUIRED_FFMPEG_VERSION} not found, falling back to internal build")
unset(FFMPEG_INCLUDE_DIRS)
unset(FFMPEG_INCLUDE_DIRS CACHE)
unset(FFMPEG_LIBRARIES)
unset(FFMPEG_LIBRARIES CACHE)
unset(FFMPEG_DEFINITIONS)
unset(FFMPEG_DEFINITIONS CACHE)
endif()
if(FFMPEG_FOUND)
set(FFMPEG_LDFLAGS ${PC_FFMPEG_LDFLAGS} CACHE STRING "ffmpeg linker flags")
set(FFMPEG_LIBRARIES ${FFMPEG_LIBAVCODEC} ${FFMPEG_LIBAVFILTER}
${FFMPEG_LIBAVFORMAT} ${FFMPEG_LIBAVUTIL}
${FFMPEG_LIBSWSCALE} ${FFMPEG_LIBSWRESAMPLE}
${FFMPEG_LIBPOSTPROC} ${FFMPEG_LDFLAGS})
list(APPEND FFMPEG_DEFINITIONS -DFFMPEG_VER_SHA=\"${FFMPEG_VERSION}\")
# check if ffmpeg libs are statically linked
set(FFMPEG_LIB_TYPE SHARED)
foreach(_fflib IN LISTS FFMPEG_LIBRARIES)
if(${_fflib} MATCHES ".+\.a$" AND PC_FFMPEG_STATIC_LDFLAGS)
set(FFMPEG_LDFLAGS ${PC_FFMPEG_STATIC_LDFLAGS} CACHE STRING "ffmpeg linker flags" FORCE)
set(FFMPEG_LIB_TYPE STATIC)
if(NOT APPLE AND NOT WIN32)
set(FFMPEG_LDFLAGS "-Wl,-Bsymbolic ${FFMPEG_LDFLAGS}")
endif()
break()
endif()
endforeach()
if(NOT TARGET ffmpeg)
add_library(ffmpeg ${FFMPEG_LIB_TYPE} IMPORTED)
set_target_properties(ffmpeg PROPERTIES
FOLDER "External Projects"
IMPORTED_LOCATION "${FFMPEG_LIBRARIES}"
INTERFACE_INCLUDE_DIRECTORIES "${FFMPEG_INCLUDE_DIRS}"
INTERFACE_LINK_LIBRARIES "${FFMPEG_LDFLAGS}"
INTERFACE_COMPILE_DEFINITIONS "${FFMPEG_DEFINITIONS}")
endif()
endif()
endif()
mark_as_advanced(FFMPEG_INCLUDE_DIRS FFMPEG_LIBRARIES FFMPEG_LDFLAGS FFMPEG_DEFINITIONS FFMPEG_FOUND)
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