# FindFFmpeg # ---------- # # Copyright 2019 Citra Emulator Project # Licensed under GPLv2 or any later version # # Find the native FFmpeg includes and libraries # # This module defines the following variables: # # FFmpeg_INCLUDE_<component>: where to find <component>.h # FFmpeg_LIBRARY_<component>: where to find the <component> library # FFmpeg_INCLUDE_DIR: aggregate all the include paths # FFmpeg_LIBRARIES: aggregate all the paths to the libraries # FFmpeg_FOUND: True if all components have been found # # This module defines the following targets, which are prefered over variables: # # FFmpeg::<component>: Target to use <component> directly, with include path, # library and dependencies set up. If you are using a static build, you are # responsible for adding any external dependencies (such as zlib, bzlib...). # # <component> can be one of: # avcodec # avdevice # avfilter # avformat # avutil # postproc # swresample # swscale # set(_FFmpeg_ALL_COMPONENTS avcodec avdevice avfilter avformat avutil postproc swresample swscale ) set(_FFmpeg_DEPS_avcodec avutil) set(_FFmpeg_DEPS_avdevice avcodec avformat avutil) set(_FFmpeg_DEPS_avfilter avutil) set(_FFmpeg_DEPS_avformat avcodec avutil) set(_FFmpeg_DEPS_postproc avutil) set(_FFmpeg_DEPS_swresample avutil) set(_FFmpeg_DEPS_swscale avutil) function(find_ffmpeg LIBNAME) if(DEFINED ENV{FFMPEG_DIR}) set(FFMPEG_DIR $ENV{FFMPEG_DIR}) endif() if(FFMPEG_DIR) list(APPEND INCLUDE_PATHS ${FFMPEG_DIR} ${FFMPEG_DIR}/ffmpeg ${FFMPEG_DIR}/lib${LIBNAME} ${FFMPEG_DIR}/include/lib${LIBNAME} ${FFMPEG_DIR}/include/ffmpeg ${FFMPEG_DIR}/include NO_DEFAULT_PATH NO_CMAKE_FIND_ROOT_PATH ) list(APPEND LIB_PATHS ${FFMPEG_DIR} ${FFMPEG_DIR}/lib ${FFMPEG_DIR}/lib${LIBNAME} NO_DEFAULT_PATH NO_CMAKE_FIND_ROOT_PATH ) else() list(APPEND INCLUDE_PATHS /usr/local/include/ffmpeg /usr/local/include/lib${LIBNAME} /usr/include/ffmpeg /usr/include/lib${LIBNAME} /usr/include/ffmpeg/lib${LIBNAME} ) list(APPEND LIB_PATHS /usr/local/lib /usr/lib ) endif() find_path(FFmpeg_INCLUDE_${LIBNAME} lib${LIBNAME}/${LIBNAME}.h HINTS ${INCLUDE_PATHS} ) find_library(FFmpeg_LIBRARY_${LIBNAME} ${LIBNAME} HINTS ${LIB_PATHS} ) if(NOT FFMPEG_DIR AND (NOT FFmpeg_LIBRARY_${LIBNAME} OR NOT FFmpeg_INCLUDE_${LIBNAME})) # Didn't find it in the usual paths, try pkg-config find_package(PkgConfig QUIET) pkg_check_modules(FFmpeg_PKGCONFIG_${LIBNAME} QUIET lib${LIBNAME}) find_path(FFmpeg_INCLUDE_${LIBNAME} lib${LIBNAME}/${LIBNAME}.h ${FFmpeg_PKGCONFIG_${LIBNAME}_INCLUDE_DIRS} ) find_library(FFmpeg_LIBRARY_${LIBNAME} ${LIBNAME} ${FFmpeg_PKGCONFIG_${LIBNAME}_LIBRARY_DIRS} ) endif() if(FFmpeg_INCLUDE_${LIBNAME} AND FFmpeg_LIBRARY_${LIBNAME}) set(FFmpeg_INCLUDE_${LIBNAME} "${FFmpeg_INCLUDE_${LIBNAME}}" PARENT_SCOPE) set(FFmpeg_LIBRARY_${LIBNAME} "${FFmpeg_LIBRARY_${LIBNAME}}" PARENT_SCOPE) # Extract FFmpeg version from version.h foreach(v MAJOR MINOR MICRO) set(FFmpeg_${LIBNAME}_VERSION_${v} 0) endforeach() string(TOUPPER ${LIBNAME} LIBNAME_UPPER) file(STRINGS "${FFmpeg_INCLUDE_${LIBNAME}}/lib${LIBNAME}/version.h" _FFmpeg_VERSION_H_CONTENTS REGEX "#define LIB${LIBNAME_UPPER}_VERSION_(MAJOR|MINOR|MICRO) ") set(_FFmpeg_VERSION_REGEX "([0-9]+)") foreach(v MAJOR MINOR MICRO) if("${_FFmpeg_VERSION_H_CONTENTS}" MATCHES "#define LIB${LIBNAME_UPPER}_VERSION_${v}[\\t ]+${_FFmpeg_VERSION_REGEX}") set(FFmpeg_${LIBNAME}_VERSION_${v} "${CMAKE_MATCH_1}") endif() endforeach() set(FFmpeg_${LIBNAME}_VERSION "${FFmpeg_${LIBNAME}_VERSION_MAJOR}.${FFmpeg_${LIBNAME}_VERSION_MINOR}.${FFmpeg_${LIBNAME}_VERSION_MICRO}") set(FFmpeg_${c}_VERSION "${FFmpeg_${LIBNAME}_VERSION}" PARENT_SCOPE) unset(_FFmpeg_VERSION_REGEX) unset(_FFmpeg_VERSION_H_CONTENTS) set(FFmpeg_${c}_FOUND TRUE PARENT_SCOPE) if(NOT FFmpeg_FIND_QUIETLY) message("-- Found ${LIBNAME}: ${FFmpeg_INCLUDE_${LIBNAME}} ${FFmpeg_LIBRARY_${LIBNAME}} (version: ${FFmpeg_${LIBNAME}_VERSION})") endif() endif() endfunction() foreach(c ${_FFmpeg_ALL_COMPONENTS}) find_ffmpeg(${c}) endforeach() foreach(c ${_FFmpeg_ALL_COMPONENTS}) if(FFmpeg_${c}_FOUND) list(APPEND FFmpeg_INCLUDE_DIR ${FFmpeg_INCLUDE_${c}}) list(APPEND FFmpeg_LIBRARIES ${FFmpeg_LIBRARY_${c}}) add_library(FFmpeg::${c} IMPORTED UNKNOWN) set_target_properties(FFmpeg::${c} PROPERTIES IMPORTED_LOCATION ${FFmpeg_LIBRARY_${c}} INTERFACE_INCLUDE_DIRECTORIES ${FFmpeg_INCLUDE_${c}} ) if(_FFmpeg_DEPS_${c}) set(deps) foreach(dep ${_FFmpeg_DEPS_${c}}) list(APPEND deps FFmpeg::${dep}) endforeach() set_target_properties(FFmpeg::${c} PROPERTIES INTERFACE_LINK_LIBRARIES "${deps}" ) unset(deps) endif() endif() endforeach() if(FFmpeg_INCLUDE_DIR) list(REMOVE_DUPLICATES FFmpeg_INCLUDE_DIR) endif() foreach(c ${FFmpeg_FIND_COMPONENTS}) list(APPEND _FFmpeg_REQUIRED_VARS FFmpeg_INCLUDE_${c} FFmpeg_LIBRARY_${c}) endforeach() include(FindPackageHandleStandardArgs) find_package_handle_standard_args(FFmpeg REQUIRED_VARS ${_FFmpeg_REQUIRED_VARS} HANDLE_COMPONENTS ) foreach(c ${_FFmpeg_ALL_COMPONENTS}) unset(_FFmpeg_DEPS_${c}) endforeach() unset(_FFmpeg_ALL_COMPONENTS) unset(_FFmpeg_REQUIRED_VARS)