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# 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)
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