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# SPDX-FileCopyrightText: 2021 yuzu Emulator Project
# SPDX-License-Identifier: GPL-2.0-or-later
if (NOT WIN32)
# Build FFmpeg from externals
message(STATUS "Using FFmpeg from externals")
if (CMAKE_SYSTEM_PROCESSOR MATCHES "(x86_64|amd64)")
# FFmpeg has source that requires one of nasm or yasm to assemble it.
# REQUIRED throws an error if not found here during configuration rather than during compilation.
find_program(ASSEMBLER NAMES nasm yasm)
if ("${ASSEMBLER}" STREQUAL "ASSEMBLER-NOTFOUND")
message(FATAL_ERROR "One of either `nasm` or `yasm` not found but is required.")
endif()
endif()
find_program(AUTOCONF autoconf)
if ("${AUTOCONF}" STREQUAL "AUTOCONF-NOTFOUND")
message(FATAL_ERROR "Required program `autoconf` not found.")
endif()
set(FFmpeg_PREFIX ${PROJECT_SOURCE_DIR}/externals/ffmpeg/ffmpeg)
set(FFmpeg_BUILD_DIR ${PROJECT_BINARY_DIR}/externals/ffmpeg-build)
set(FFmpeg_MAKEFILE ${FFmpeg_BUILD_DIR}/Makefile)
make_directory(${FFmpeg_BUILD_DIR})
# Read version string from external
file(READ ${FFmpeg_PREFIX}/RELEASE FFmpeg_VERSION)
set(FFmpeg_FOUND NO)
if (NOT FFmpeg_VERSION STREQUAL "")
set(FFmpeg_FOUND YES)
endif()
unset(FFmpeg_LIBRARIES CACHE)
foreach(COMPONENT ${FFmpeg_COMPONENTS})
set(FFmpeg_${COMPONENT}_PREFIX "${FFmpeg_BUILD_DIR}/lib${COMPONENT}")
set(FFmpeg_${COMPONENT}_LIB_NAME "lib${COMPONENT}.a")
set(FFmpeg_${COMPONENT}_LIBRARY "${FFmpeg_${COMPONENT}_PREFIX}/${FFmpeg_${COMPONENT}_LIB_NAME}")
set(FFmpeg_LIBRARIES
${FFmpeg_LIBRARIES}
${FFmpeg_${COMPONENT}_LIBRARY}
CACHE PATH "Paths to FFmpeg libraries" FORCE)
endforeach()
find_package(PkgConfig REQUIRED)
pkg_check_modules(LIBVA libva)
pkg_check_modules(CUDA cuda)
pkg_check_modules(FFNVCODEC ffnvcodec)
pkg_check_modules(VDPAU vdpau)
set(FFmpeg_HWACCEL_LIBRARIES)
set(FFmpeg_HWACCEL_FLAGS)
set(FFmpeg_HWACCEL_INCLUDE_DIRS)
set(FFmpeg_HWACCEL_LDFLAGS)
if(LIBVA_FOUND)
pkg_check_modules(LIBDRM libdrm REQUIRED)
find_package(X11 REQUIRED)
pkg_check_modules(LIBVA-DRM libva-drm REQUIRED)
pkg_check_modules(LIBVA-X11 libva-x11 REQUIRED)
list(APPEND FFmpeg_HWACCEL_LIBRARIES
${LIBDRM_LIBRARIES}
${X11_LIBRARIES}
${LIBVA-DRM_LIBRARIES}
${LIBVA-X11_LIBRARIES}
${LIBVA_LIBRARIES})
set(FFmpeg_HWACCEL_FLAGS
--enable-hwaccel=h264_vaapi
--enable-hwaccel=vp8_vaapi
--enable-hwaccel=vp9_vaapi
--enable-libdrm)
list(APPEND FFmpeg_HWACCEL_INCLUDE_DIRS
${LIBDRM_INCLUDE_DIRS}
${X11_INCLUDE_DIRS}
${LIBVA-DRM_INCLUDE_DIRS}
${LIBVA-X11_INCLUDE_DIRS}
${LIBVA_INCLUDE_DIRS}
)
message(STATUS "VA-API found")
else()
set(FFmpeg_HWACCEL_FLAGS --disable-vaapi)
endif()
if (FFNVCODEC_FOUND)
list(APPEND FFmpeg_HWACCEL_FLAGS
--enable-cuvid
--enable-ffnvcodec
--enable-nvdec
--enable-hwaccel=h264_nvdec
--enable-hwaccel=vp8_nvdec
--enable-hwaccel=vp9_nvdec
)
list(APPEND FFmpeg_HWACCEL_LIBRARIES ${FFNVCODEC_LIBRARIES})
list(APPEND FFmpeg_HWACCEL_INCLUDE_DIRS ${FFNVCODEC_INCLUDE_DIRS})
list(APPEND FFmpeg_HWACCEL_LDFLAGS ${FFNVCODEC_LDFLAGS})
message(STATUS "ffnvcodec libraries version ${FFNVCODEC_VERSION} found")
# ffnvenc could load CUDA libraries at the runtime using dlopen/dlsym or LoadLibrary/GetProcAddress
# here we handle the hard-linking senario where CUDA is linked during compilation
if (CUDA_FOUND)
# This line causes build error if CUDA_INCLUDE_DIRS is anything but a single non-empty value
#list(APPEND FFmpeg_HWACCEL_FLAGS --extra-cflags=-I${CUDA_INCLUDE_DIRS})
list(APPEND FFmpeg_HWACCEL_LIBRARIES ${CUDA_LIBRARIES})
list(APPEND FFmpeg_HWACCEL_INCLUDE_DIRS ${CUDA_INCLUDE_DIRS})
list(APPEND FFmpeg_HWACCEL_LDFLAGS ${CUDA_LDFLAGS})
message(STATUS "CUDA libraries found, hard-linking will be performed")
endif(CUDA_FOUND)
endif()
if (VDPAU_FOUND)
list(APPEND FFmpeg_HWACCEL_FLAGS
--enable-vdpau
--enable-hwaccel=h264_vdpau
--enable-hwaccel=vp9_vdpau
)
list(APPEND FFmpeg_HWACCEL_LIBRARIES ${VDPAU_LIBRARIES})
list(APPEND FFmpeg_HWACCEL_INCLUDE_DIRS ${VDPAU_INCLUDE_DIRS})
list(APPEND FFmpeg_HWACCEL_LDFLAGS ${VDPAU_LDFLAGS})
message(STATUS "vdpau libraries version ${VDPAU_VERSION} found")
else()
list(APPEND FFmpeg_HWACCEL_FLAGS --disable-vdpau)
endif()
# `configure` parameters builds only exactly what yuzu needs from FFmpeg
# `--disable-vdpau` is needed to avoid linking issues
set(FFmpeg_CC ${CMAKE_C_COMPILER_LAUNCHER} ${CMAKE_C_COMPILER})
set(FFmpeg_CXX ${CMAKE_CXX_COMPILER_LAUNCHER} ${CMAKE_CXX_COMPILER})
add_custom_command(
OUTPUT
${FFmpeg_MAKEFILE}
COMMAND
/bin/bash ${FFmpeg_PREFIX}/configure
--disable-avdevice
--disable-avformat
--disable-doc
--disable-everything
--disable-ffmpeg
--disable-ffprobe
--disable-network
--disable-postproc
--disable-swresample
--enable-decoder=h264
--enable-decoder=vp8
--enable-decoder=vp9
--enable-filter=yadif
--cc="${FFmpeg_CC}"
--cxx="${FFmpeg_CXX}"
${FFmpeg_HWACCEL_FLAGS}
WORKING_DIRECTORY
${FFmpeg_BUILD_DIR}
)
unset(FFmpeg_CC)
unset(FFmpeg_CXX)
unset(FFmpeg_HWACCEL_FLAGS)
# Workaround for Ubuntu 18.04's older version of make not being able to call make as a child
# with context of the jobserver. Also helps ninja users.
execute_process(
COMMAND
nproc
OUTPUT_VARIABLE
SYSTEM_THREADS)
set(FFmpeg_BUILD_LIBRARIES ${FFmpeg_LIBRARIES})
add_custom_command(
OUTPUT
${FFmpeg_BUILD_LIBRARIES}
COMMAND
make -j${SYSTEM_THREADS}
WORKING_DIRECTORY
${FFmpeg_BUILD_DIR}
)
set(FFmpeg_INCLUDE_DIR
"${FFmpeg_PREFIX};${FFmpeg_BUILD_DIR};${FFmpeg_HWACCEL_INCLUDE_DIRS}"
CACHE PATH "Path to FFmpeg headers" FORCE)
set(FFmpeg_LDFLAGS
"${FFmpeg_HWACCEL_LDFLAGS}"
CACHE STRING "FFmpeg linker flags" FORCE)
# ALL makes this custom target build every time
# but it won't actually build if the DEPENDS parameter is up to date
add_custom_target(ffmpeg-configure ALL DEPENDS ${FFmpeg_MAKEFILE})
add_custom_target(ffmpeg-build ALL DEPENDS ${FFmpeg_BUILD_LIBRARIES} ffmpeg-configure)
link_libraries(${FFmpeg_LIBVA_LIBRARIES})
set(FFmpeg_LIBRARIES ${FFmpeg_BUILD_LIBRARIES} ${FFmpeg_HWACCEL_LIBRARIES}
CACHE PATH "Paths to FFmpeg libraries" FORCE)
unset(FFmpeg_BUILD_LIBRARIES)
unset(FFmpeg_HWACCEL_FLAGS)
unset(FFmpeg_HWACCEL_INCLUDE_DIRS)
unset(FFmpeg_HWACCEL_LDFLAGS)
unset(FFmpeg_HWACCEL_LIBRARIES)
if (FFmpeg_FOUND)
message(STATUS "Found FFmpeg version ${FFmpeg_VERSION}")
else()
message(FATAL_ERROR "FFmpeg not found")
endif()
else(WIN32)
# Use yuzu FFmpeg binaries
set(FFmpeg_EXT_NAME "ffmpeg-5.1.3")
set(FFmpeg_PATH "${CMAKE_BINARY_DIR}/externals/${FFmpeg_EXT_NAME}")
download_bundled_external("ffmpeg/" ${FFmpeg_EXT_NAME} "")
set(FFmpeg_FOUND YES)
set(FFmpeg_INCLUDE_DIR "${FFmpeg_PATH}/include" CACHE PATH "Path to FFmpeg headers" FORCE)
set(FFmpeg_LIBRARY_DIR "${FFmpeg_PATH}/bin" CACHE PATH "Path to FFmpeg library directory" FORCE)
set(FFmpeg_LDFLAGS "" CACHE STRING "FFmpeg linker flags" FORCE)
set(FFmpeg_DLL_DIR "${FFmpeg_PATH}/bin" CACHE PATH "Path to FFmpeg dll's" FORCE)
set(FFmpeg_LIBRARIES
${FFmpeg_LIBRARY_DIR}/swscale.lib
${FFmpeg_LIBRARY_DIR}/avcodec.lib
${FFmpeg_LIBRARY_DIR}/avfilter.lib
${FFmpeg_LIBRARY_DIR}/avutil.lib
CACHE PATH "Paths to FFmpeg libraries" FORCE)
# exported variables
set(FFmpeg_PATH "${FFmpeg_PATH}" PARENT_SCOPE)
set(FFmpeg_LDFLAGS "${FFmpeg_LDFLAGS}" PARENT_SCOPE)
set(FFmpeg_LIBRARIES "${FFmpeg_LIBRARIES}" PARENT_SCOPE)
set(FFmpeg_INCLUDE_DIR "${FFmpeg_INCLUDE_DIR}" PARENT_SCOPE)
endif()
unset(FFmpeg_COMPONENTS)
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