mirror of
https://github.com/ARMSX2/ARMSX3.git
synced 2026-08-24 16:58:52 -07:00
82 lines
3.3 KiB
CMake
82 lines
3.3 KiB
CMake
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# ARMSX3: prebuilt ffmpeg for Android.
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#
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# Upstream 3rdparty/CMakeLists.txt wraps its whole FFMPEG block in
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# `if(NOT ANDROID)` -- it deliberately does not define 3rdparty_ffmpeg on
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# Android and expects the Android build to supply it. But line ~378 then does
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# `add_library(3rdparty::ffmpeg ALIAS 3rdparty_ffmpeg)` UNGUARDED, so the target
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# must already exist by the time 3rdparty/ is processed. Hence this file is
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# include()d from the root CMakeLists *before* add_subdirectory(3rdparty).
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#
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# Upstream's own 3rdparty/ffmpeg/CMakeLists.txt cannot serve Android: it maps
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# OS -> prebuilt via WIN32/APPLE/UNIX/MINGW, and Android matches UNIX, so it
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# would fetch a *Linux* arm64 build and fail to link against bionic.
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#
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# Prebuilts come from RPCS3-Android/ffmpeg-android (same source RPCSX uses).
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set(FFMPEG_VERSION 5.1)
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if(CMAKE_SYSTEM_PROCESSOR MATCHES "aarch64")
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set(RPCS3_DOWNLOAD_ARCH "arm64-v8a")
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else()
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set(RPCS3_DOWNLOAD_ARCH "x86-64")
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endif()
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if(NOT EXISTS ${CMAKE_BINARY_DIR}/ffmpeg-${FFMPEG_VERSION}.tar.gz)
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message(STATUS "ARMSX3: downloading ffmpeg-${FFMPEG_VERSION} for ${RPCS3_DOWNLOAD_ARCH}")
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file(DOWNLOAD
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https://github.com/RPCS3-Android/ffmpeg-android/releases/download/${FFMPEG_VERSION}/ffmpeg-${RPCS3_DOWNLOAD_ARCH}-Android.tar.gz
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${CMAKE_BINARY_DIR}/ffmpeg-${FFMPEG_VERSION}.tar.gz
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SHOW_PROGRESS
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STATUS FFMPEG_DOWNLOAD_STATUS
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)
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list(GET FFMPEG_DOWNLOAD_STATUS 0 FFMPEG_STATUS_CODE)
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if(NOT FFMPEG_STATUS_CODE EQUAL 0)
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# CMake leaves a 0-byte file behind on failure, which would poison the
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# `if(NOT EXISTS ...)` guard on the next configure.
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file(REMOVE ${CMAKE_BINARY_DIR}/ffmpeg-${FFMPEG_VERSION}.tar.gz)
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message(FATAL_ERROR "ARMSX3: failed to download Android ffmpeg prebuilts")
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endif()
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endif()
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set(FFMPEG_PATH "${CMAKE_BINARY_DIR}/ffmpeg-${FFMPEG_VERSION}")
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# Unpack eagerly at configure time: the imported-library IMPORTED_LOCATION
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# paths below must exist before any target links them.
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if(NOT EXISTS "${FFMPEG_PATH}/libavcodec/libavcodec.a")
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file(MAKE_DIRECTORY ${FFMPEG_PATH})
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execute_process(
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COMMAND ${CMAKE_COMMAND} -E tar xzf ${CMAKE_BINARY_DIR}/ffmpeg-${FFMPEG_VERSION}.tar.gz
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WORKING_DIRECTORY ${FFMPEG_PATH}
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RESULT_VARIABLE FFMPEG_UNPACK_RESULT
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)
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if(NOT FFMPEG_UNPACK_RESULT EQUAL 0)
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message(FATAL_ERROR "ARMSX3: failed to unpack Android ffmpeg prebuilts")
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endif()
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endif()
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function(armsx3_import_ffmpeg_library name)
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add_library(ffmpeg::${name} STATIC IMPORTED GLOBAL)
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set_property(TARGET ffmpeg::${name} PROPERTY
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IMPORTED_LOCATION "${FFMPEG_PATH}/lib${name}/lib${name}.a")
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set_property(TARGET ffmpeg::${name} PROPERTY
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INTERFACE_INCLUDE_DIRECTORIES "${FFMPEG_PATH}" "${FFMPEG_PATH}/src")
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endfunction()
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armsx3_import_ffmpeg_library(avcodec)
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armsx3_import_ffmpeg_library(avformat)
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armsx3_import_ffmpeg_library(avfilter)
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armsx3_import_ffmpeg_library(avdevice)
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armsx3_import_ffmpeg_library(avutil)
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armsx3_import_ffmpeg_library(swscale)
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armsx3_import_ffmpeg_library(swresample)
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# The name upstream's `3rdparty::ffmpeg` alias expects.
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add_library(3rdparty_ffmpeg INTERFACE)
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target_link_libraries(3rdparty_ffmpeg INTERFACE
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ffmpeg::avformat
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ffmpeg::avcodec
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ffmpeg::avutil
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ffmpeg::swscale
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ffmpeg::swresample
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)
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