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add_library(ffmpeg_defs INTERFACE)
IF(PLATFORM_WINDOWS)
get_prebuilt_path(PREBUILT_PATH)
set(FFMPEG_ROOT_DIR "${PREBUILT_PATH}/ffmpeg")
macro(add_av_lib name libname)
add_library(${name} SHARED IMPORTED GLOBAL)
set(include_dir "${FFMPEG_ROOT_DIR}/include/lib${name}")
set(dll_name "${FFMPEG_ROOT_DIR}/bin/${CMAKE_SHARED_LIBRARY_PREFIX}${libname}${CMAKE_SHARED_LIBRARY_SUFFIX}")
set(lib_name "${FFMPEG_ROOT_DIR}/lib/${CMAKE_IMPORT_LIBRARY_PREFIX}${name}${CMAKE_IMPORT_LIBRARY_SUFFIX}")
if (NOT EXISTS "${dll_name}")
set(dll_name "${FFMPEG_ROOT_DIR}/bin/${libname}${CMAKE_SHARED_LIBRARY_SUFFIX}")
endif()
if (NOT EXISTS "${lib_name}")
set(lib_name "${FFMPEG_ROOT_DIR}/bin/${CMAKE_IMPORT_LIBRARY_PREFIX}${name}${CMAKE_IMPORT_LIBRARY_SUFFIX}")
endif()
if (NOT IS_DIRECTORY "${include_dir}")
message("Couldn't find include directory for ${name} in \"${FFMPEG_ROOT_DIR}\".")
endif ()
set_target_properties(${name} PROPERTIES
IMPORTED_LOCATION "${dll_name}"
IMPORTED_IMPLIB "${lib_name}"
)
set_target_properties(${name} PROPERTIES
INTERFACE_INCLUDE_DIRECTORIES "${FFMPEG_ROOT_DIR}/include"
)
add_target_copy_files("${dll_name}")
endmacro(add_av_lib)
add_av_lib(avcodec avcodec-57)
add_av_lib(avformat avformat-57)
add_av_lib(avutil avutil-55)
add_av_lib(swscale swscale-4)
add_av_lib(swresample swresample-2)
add_library(ffmpeg INTERFACE)
target_link_libraries(ffmpeg INTERFACE avcodec)
target_link_libraries(ffmpeg INTERFACE avformat)
target_link_libraries(ffmpeg INTERFACE avutil)
target_link_libraries(ffmpeg INTERFACE swscale)
target_link_libraries(ffmpeg INTERFACE swresample)
ELSE(WIN32)
if (PLATFORM_MAC)
option(FFMPEG_USE_PRECOMPILED "Use precompiled version of FFmpeg. If disabled the system libraries will be used." ON)
else()
option(FFMPEG_USE_PRECOMPILED "Use precompiled version of FFmpeg. If disabled the system libraries will be used." OFF)
endif()
# CMake can't check for ffmpeg so we'll just use PkgConfig
INCLUDE(FindPkgConfig REQUIRED)
INCLUDE(util)
set(USING_PREBUILT_LIBS FALSE)
set(FFMPEG_PATH)
if (FFMPEG_USE_PRECOMPILED)
get_prebuilt_path(PREBUILT_PATH)
set(FFMPEG_PATH "${PREBUILT_PATH}/ffmpeg")
set(USING_PREBUILT_LIBS TRUE)
else()
# Check if we have ffmpeg, the minimum version we support is 2.7
PKG_SEARCH_MODULE(avcodec "libavcodec >= 56.39")
if (NOT avcodec_FOUND)
message("FFmpeg libraries could not be found. Using prebuilt libraries...")
get_prebuilt_path(PREBUILT_PATH)
set(FFMPEG_PATH "${PREBUILT_PATH}/ffmpeg")
set(USING_PREBUILT_LIBS TRUE)
endif()
endif()
if (USING_PREBUILT_LIBS)
message(STATUS "Using pre-built LGPL FFmpeg libraries.")
else()
message(STATUS "Using system FFmpeg libraries. Don't distribute these FSO binaries if these are the GPL libraries!")
endif()
# I need to do some workarounds to be able to use our prebuilt LGPL builds
# so we can distribute that in releases
# The ffmpeg libs specify a SONAME that is different from the name of the file
# so we also need to copy and install that symlink in addition to the actual library
macro(add_av_lib name)
if (NOT USING_PREBUILT_LIBS)
PKG_SEARCH_MODULE(${name} REQUIRED "lib${name}")
PKG_CONFIG_LIB_RESOLVE(${name} ${name}_LIB)
ADD_IMPORTED_LIB("${name}" "${${name}_INCLUDE_DIRS}" "${${name}_LIB}" SHARED)
else()
# Use our libraries
find_library(${name}_LOCATION ${name}
PATHS "${FFMPEG_PATH}/lib"
NO_DEFAULT_PATH)
file(GLOB ${name}_LIBS "${FFMPEG_PATH}/lib/lib${name}*")
get_filename_component(FULL_LIB_PATH "${${name}_LOCATION}" REALPATH)
ADD_IMPORTED_LIB("${name}" "${FFMPEG_PATH}/include" "${FULL_LIB_PATH}")
add_target_copy_files("${${name}_LIBS}")
endif()
endmacro(add_av_lib)
add_av_lib(avcodec)
add_av_lib(avformat)
add_av_lib(avutil)
add_av_lib(swresample)
add_av_lib(swscale)
add_library(ffmpeg INTERFACE)
target_compile_definitions(ffmpeg INTERFACE __STDC_CONSTANT_MACROS)
target_link_libraries(ffmpeg INTERFACE avcodec)
target_link_libraries(ffmpeg INTERFACE avformat)
target_link_libraries(ffmpeg INTERFACE avutil)
target_link_libraries(ffmpeg INTERFACE swscale)
target_link_libraries(ffmpeg INTERFACE swresample)
ENDIF()
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