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				https://git.suyu.dev/suyu/suyu
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			278 lines
		
	
	
		
			11 KiB
		
	
	
	
		
			CMake
		
	
	
	
	
	
			
		
		
	
	
			278 lines
		
	
	
		
			11 KiB
		
	
	
	
		
			CMake
		
	
	
	
	
	
# SPDX-FileCopyrightText: 2021 yuzu Emulator Project
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# SPDX-License-Identifier: GPL-2.0-or-later
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if (NOT WIN32 AND NOT ANDROID)
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    # Build FFmpeg from externals
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    message(STATUS "Using FFmpeg from externals")
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    if (CMAKE_SYSTEM_PROCESSOR MATCHES "(x86_64|amd64)")
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        # FFmpeg has source that requires one of nasm or yasm to assemble it.
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        # REQUIRED throws an error if not found here during configuration rather than during compilation.
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        find_program(ASSEMBLER NAMES nasm yasm)
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        if ("${ASSEMBLER}" STREQUAL "ASSEMBLER-NOTFOUND")
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            message(FATAL_ERROR "One of either `nasm` or `yasm` not found but is required.")
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        endif()
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    endif()
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    find_program(AUTOCONF autoconf)
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    if ("${AUTOCONF}" STREQUAL "AUTOCONF-NOTFOUND")
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        message(FATAL_ERROR "Required program `autoconf` not found.")
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    endif()
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    set(FFmpeg_PREFIX ${PROJECT_SOURCE_DIR}/externals/ffmpeg/ffmpeg)
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    set(FFmpeg_BUILD_DIR ${PROJECT_BINARY_DIR}/externals/ffmpeg-build)
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    set(FFmpeg_MAKEFILE ${FFmpeg_BUILD_DIR}/Makefile)
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    make_directory(${FFmpeg_BUILD_DIR})
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    # Read version string from external
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    file(READ ${FFmpeg_PREFIX}/RELEASE FFmpeg_VERSION)
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    set(FFmpeg_FOUND NO)
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    if (NOT FFmpeg_VERSION STREQUAL "")
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        set(FFmpeg_FOUND YES)
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    endif()
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    unset(FFmpeg_LIBRARIES CACHE)
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    foreach(COMPONENT ${FFmpeg_COMPONENTS})
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        set(FFmpeg_${COMPONENT}_PREFIX "${FFmpeg_BUILD_DIR}/lib${COMPONENT}")
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        set(FFmpeg_${COMPONENT}_LIB_NAME "lib${COMPONENT}.a")
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        set(FFmpeg_${COMPONENT}_LIBRARY "${FFmpeg_${COMPONENT}_PREFIX}/${FFmpeg_${COMPONENT}_LIB_NAME}")
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        set(FFmpeg_LIBRARIES
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            ${FFmpeg_LIBRARIES}
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            ${FFmpeg_${COMPONENT}_LIBRARY}
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            CACHE PATH "Paths to FFmpeg libraries" FORCE)
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    endforeach()
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    find_package(PkgConfig REQUIRED)
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    if (NOT ANDROID)
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        pkg_check_modules(LIBVA libva)
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        pkg_check_modules(CUDA cuda)
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        pkg_check_modules(FFNVCODEC ffnvcodec)
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        pkg_check_modules(VDPAU vdpau)
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    endif()
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    set(FFmpeg_HWACCEL_LIBRARIES)
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    set(FFmpeg_HWACCEL_FLAGS)
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    set(FFmpeg_HWACCEL_INCLUDE_DIRS)
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    set(FFmpeg_HWACCEL_LDFLAGS)
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    if(LIBVA_FOUND)
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        pkg_check_modules(LIBDRM libdrm REQUIRED)
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        find_package(X11 REQUIRED)
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        pkg_check_modules(LIBVA-DRM libva-drm REQUIRED)
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        pkg_check_modules(LIBVA-X11 libva-x11 REQUIRED)
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        list(APPEND FFmpeg_HWACCEL_LIBRARIES
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            ${LIBDRM_LIBRARIES}
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            ${X11_LIBRARIES}
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            ${LIBVA-DRM_LIBRARIES}
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            ${LIBVA-X11_LIBRARIES}
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            ${LIBVA_LIBRARIES})
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        set(FFmpeg_HWACCEL_FLAGS
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            --enable-hwaccel=h264_vaapi
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            --enable-hwaccel=vp8_vaapi
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            --enable-hwaccel=vp9_vaapi
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            --enable-libdrm)
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        list(APPEND FFmpeg_HWACCEL_INCLUDE_DIRS
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            ${LIBDRM_INCLUDE_DIRS}
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            ${X11_INCLUDE_DIRS}
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            ${LIBVA-DRM_INCLUDE_DIRS}
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            ${LIBVA-X11_INCLUDE_DIRS}
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            ${LIBVA_INCLUDE_DIRS}
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        )
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        message(STATUS "VA-API found")
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    else()
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        set(FFmpeg_HWACCEL_FLAGS --disable-vaapi)
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    endif()
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    if (FFNVCODEC_FOUND)
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        list(APPEND FFmpeg_HWACCEL_FLAGS
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            --enable-cuvid
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            --enable-ffnvcodec
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            --enable-nvdec
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            --enable-hwaccel=h264_nvdec
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            --enable-hwaccel=vp8_nvdec
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            --enable-hwaccel=vp9_nvdec
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        )
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        list(APPEND FFmpeg_HWACCEL_LIBRARIES ${FFNVCODEC_LIBRARIES})
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        list(APPEND FFmpeg_HWACCEL_INCLUDE_DIRS ${FFNVCODEC_INCLUDE_DIRS})
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        list(APPEND FFmpeg_HWACCEL_LDFLAGS ${FFNVCODEC_LDFLAGS})
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        message(STATUS "ffnvcodec libraries version ${FFNVCODEC_VERSION} found")
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        # ffnvenc could load CUDA libraries at the runtime using dlopen/dlsym or LoadLibrary/GetProcAddress
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        # here we handle the hard-linking senario where CUDA is linked during compilation
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        if (CUDA_FOUND)
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            # This line causes build error if CUDA_INCLUDE_DIRS is anything but a single non-empty value
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            #list(APPEND FFmpeg_HWACCEL_FLAGS --extra-cflags=-I${CUDA_INCLUDE_DIRS})
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            list(APPEND FFmpeg_HWACCEL_LIBRARIES ${CUDA_LIBRARIES})
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            list(APPEND FFmpeg_HWACCEL_INCLUDE_DIRS ${CUDA_INCLUDE_DIRS})
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            list(APPEND FFmpeg_HWACCEL_LDFLAGS ${CUDA_LDFLAGS})
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            message(STATUS "CUDA libraries found, hard-linking will be performed")
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        endif(CUDA_FOUND)
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    endif()
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    if (VDPAU_FOUND)
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        list(APPEND FFmpeg_HWACCEL_FLAGS
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            --enable-vdpau
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            --enable-hwaccel=h264_vdpau
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            --enable-hwaccel=vp9_vdpau
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        )
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        list(APPEND FFmpeg_HWACCEL_LIBRARIES ${VDPAU_LIBRARIES})
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        list(APPEND FFmpeg_HWACCEL_INCLUDE_DIRS ${VDPAU_INCLUDE_DIRS})
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        list(APPEND FFmpeg_HWACCEL_LDFLAGS ${VDPAU_LDFLAGS})
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        message(STATUS "vdpau libraries version ${VDPAU_VERSION} found")
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    else()
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        list(APPEND FFmpeg_HWACCEL_FLAGS --disable-vdpau)
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    endif()
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    find_program(BASH_PROGRAM bash REQUIRED)
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    set(FFmpeg_CROSS_COMPILE_FLAGS "")
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    if (ANDROID)
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        string(TOLOWER "${CMAKE_HOST_SYSTEM_NAME}" FFmpeg_HOST_SYSTEM_NAME)
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        set(TOOLCHAIN "${ANDROID_NDK}/toolchains/llvm/prebuilt/${FFmpeg_HOST_SYSTEM_NAME}-${CMAKE_HOST_SYSTEM_PROCESSOR}")
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        set(SYSROOT "${TOOLCHAIN}/sysroot")
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        set(FFmpeg_CPU "armv8-a")
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        list(APPEND FFmpeg_CROSS_COMPILE_FLAGS
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            --arch=arm64
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            #--cpu=${FFmpeg_CPU}
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            --enable-cross-compile
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            --cross-prefix=${TOOLCHAIN}/bin/aarch64-linux-android-
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            --sysroot=${SYSROOT}
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            --target-os=android
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            --extra-ldflags="--ld-path=${TOOLCHAIN}/bin/ld.lld"
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            --extra-ldflags="-nostdlib"
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        )
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    endif()
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    # `configure` parameters builds only exactly what yuzu needs from FFmpeg
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    # `--disable-vdpau` is needed to avoid linking issues
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    set(FFmpeg_CC ${CMAKE_C_COMPILER_LAUNCHER}  ${CMAKE_C_COMPILER})
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    set(FFmpeg_CXX ${CMAKE_CXX_COMPILER_LAUNCHER}  ${CMAKE_CXX_COMPILER})
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    add_custom_command(
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        OUTPUT
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            ${FFmpeg_MAKEFILE}
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        COMMAND
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            ${BASH_PROGRAM} ${FFmpeg_PREFIX}/configure
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                --disable-avdevice
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                --disable-avformat
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                --disable-doc
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                --disable-everything
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                --disable-ffmpeg
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                --disable-ffprobe
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                --disable-network
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                --disable-postproc
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                --disable-swresample
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                --enable-decoder=h264
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                --enable-decoder=vp8
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                --enable-decoder=vp9
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                --enable-filter=yadif,scale
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                --cc="${FFmpeg_CC}"
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                --cxx="${FFmpeg_CXX}"
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                ${FFmpeg_HWACCEL_FLAGS}
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                ${FFmpeg_CROSS_COMPILE_FLAGS}
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        WORKING_DIRECTORY
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            ${FFmpeg_BUILD_DIR}
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    )
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    unset(FFmpeg_CC)
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    unset(FFmpeg_CXX)
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    unset(FFmpeg_HWACCEL_FLAGS)
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    unset(FFmpeg_CROSS_COMPILE_FLAGS)
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    # Workaround for Ubuntu 18.04's older version of make not being able to call make as a child
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    # with context of the jobserver. Also helps ninja users.
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    execute_process(
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        COMMAND
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            nproc
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        OUTPUT_VARIABLE
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            SYSTEM_THREADS)
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    set(FFmpeg_BUILD_LIBRARIES ${FFmpeg_LIBRARIES})
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    add_custom_command(
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        OUTPUT
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            ${FFmpeg_BUILD_LIBRARIES}
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        COMMAND
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            make -j${SYSTEM_THREADS}
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        WORKING_DIRECTORY
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            ${FFmpeg_BUILD_DIR}
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    )
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    set(FFmpeg_INCLUDE_DIR
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        "${FFmpeg_PREFIX};${FFmpeg_BUILD_DIR};${FFmpeg_HWACCEL_INCLUDE_DIRS}"
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        CACHE PATH "Path to FFmpeg headers" FORCE)
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    set(FFmpeg_LDFLAGS
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        "${FFmpeg_HWACCEL_LDFLAGS}"
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        CACHE STRING "FFmpeg linker flags" FORCE)
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    # ALL makes this custom target build every time
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    # but it won't actually build if the DEPENDS parameter is up to date
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    add_custom_target(ffmpeg-configure ALL DEPENDS ${FFmpeg_MAKEFILE})
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    add_custom_target(ffmpeg-build ALL DEPENDS ${FFmpeg_BUILD_LIBRARIES} ffmpeg-configure)
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    link_libraries(${FFmpeg_LIBVA_LIBRARIES})
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    set(FFmpeg_LIBRARIES ${FFmpeg_BUILD_LIBRARIES} ${FFmpeg_HWACCEL_LIBRARIES}
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        CACHE PATH "Paths to FFmpeg libraries" FORCE)
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    unset(FFmpeg_BUILD_LIBRARIES)
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    unset(FFmpeg_HWACCEL_FLAGS)
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    unset(FFmpeg_HWACCEL_INCLUDE_DIRS)
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    unset(FFmpeg_HWACCEL_LDFLAGS)
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    unset(FFmpeg_HWACCEL_LIBRARIES)
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    if (FFmpeg_FOUND)
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        message(STATUS "Found FFmpeg version ${FFmpeg_VERSION}")
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    else()
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        message(FATAL_ERROR "FFmpeg not found")
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    endif()
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elseif(ANDROID)
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    # Use yuzu FFmpeg binaries
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    if (ARCHITECTURE_arm64)
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        set(FFmpeg_EXT_NAME "ffmpeg-android-v5.1.LTS-aarch64")
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    elseif (ARCHITECTURE_x86_64)
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        set(FFmpeg_EXT_NAME "ffmpeg-android-v5.1.LTS-x86_64")
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    else()
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        message(FATAL_ERROR "Unsupported architecture for Android FFmpeg")
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    endif()
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    set(FFmpeg_PATH "${CMAKE_BINARY_DIR}/externals/${FFmpeg_EXT_NAME}")
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    download_bundled_external("ffmpeg/" ${FFmpeg_EXT_NAME} "")
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    set(FFmpeg_FOUND YES)
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    set(FFmpeg_INCLUDE_DIR "${FFmpeg_PATH}/include" CACHE PATH "Path to FFmpeg headers" FORCE)
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    set(FFmpeg_LIBRARY_DIR "${FFmpeg_PATH}/lib" CACHE PATH "Path to FFmpeg library directory" FORCE)
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    set(FFmpeg_LDFLAGS "" CACHE STRING "FFmpeg linker flags" FORCE)
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    set(FFmpeg_LIBRARIES
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        ${FFmpeg_LIBRARY_DIR}/libavcodec.so
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        ${FFmpeg_LIBRARY_DIR}/libavdevice.so
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        ${FFmpeg_LIBRARY_DIR}/libavfilter.so
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        ${FFmpeg_LIBRARY_DIR}/libavformat.so
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        ${FFmpeg_LIBRARY_DIR}/libavutil.so
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        ${FFmpeg_LIBRARY_DIR}/libswresample.so
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        ${FFmpeg_LIBRARY_DIR}/libswscale.so
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        ${FFmpeg_LIBRARY_DIR}/libvpx.a
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        ${FFmpeg_LIBRARY_DIR}/libx264.a
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        CACHE PATH "Paths to FFmpeg libraries" FORCE)
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    # exported variables
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    set(FFmpeg_PATH "${FFmpeg_PATH}" PARENT_SCOPE)
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    set(FFmpeg_LDFLAGS "${FFmpeg_LDFLAGS}" PARENT_SCOPE)
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    set(FFmpeg_LIBRARIES "${FFmpeg_LIBRARIES}" PARENT_SCOPE)
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    set(FFmpeg_INCLUDE_DIR "${FFmpeg_INCLUDE_DIR}" PARENT_SCOPE)
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elseif(WIN32)
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    # Use yuzu FFmpeg binaries
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    set(FFmpeg_EXT_NAME "ffmpeg-6.0")
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    set(FFmpeg_PATH "${CMAKE_BINARY_DIR}/externals/${FFmpeg_EXT_NAME}")
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    download_bundled_external("ffmpeg/" ${FFmpeg_EXT_NAME} "")
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    set(FFmpeg_FOUND YES)
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    set(FFmpeg_INCLUDE_DIR "${FFmpeg_PATH}/include" CACHE PATH "Path to FFmpeg headers" FORCE)
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    set(FFmpeg_LIBRARY_DIR "${FFmpeg_PATH}/bin" CACHE PATH "Path to FFmpeg library directory" FORCE)
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    set(FFmpeg_LDFLAGS "" CACHE STRING "FFmpeg linker flags" FORCE)
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    set(FFmpeg_LIBRARIES
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    ${FFmpeg_LIBRARY_DIR}/swscale.lib
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    ${FFmpeg_LIBRARY_DIR}/avcodec.lib
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    ${FFmpeg_LIBRARY_DIR}/avfilter.lib
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    ${FFmpeg_LIBRARY_DIR}/avutil.lib
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    CACHE PATH "Paths to FFmpeg libraries" FORCE)
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    # exported variables
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    set(FFmpeg_PATH "${FFmpeg_PATH}" PARENT_SCOPE)
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    set(FFmpeg_LDFLAGS "${FFmpeg_LDFLAGS}" PARENT_SCOPE)
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    set(FFmpeg_LIBRARIES "${FFmpeg_LIBRARIES}" PARENT_SCOPE)
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    set(FFmpeg_INCLUDE_DIR "${FFmpeg_INCLUDE_DIR}" PARENT_SCOPE)
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endif()
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unset(FFmpeg_COMPONENTS)
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