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• libavutil : Fix building libavutil/tests/cpu for aarch64 without SVE

  27 septembre 2024, par Martin Storsjö

  libavutil : Fix building libavutil/tests/cpu for aarch64 without SVE
  This adds a condition that was missed in
  
  b1ee2af8432e2720009df92f4ee49d98b05dc2ce, fixing compilation on
  
  toolchains that don't support SVE.
  Signed-off-by : Martin Storsjö <martin@martin.st>
  

  • [DH] libavutil/tests/cpu.c

• How to add custom configure option with VCPKG when building FFMPEG ?

  1er novembre 2024, par NickWuzh

  Does anyone know how to enable x11grab format in FFMPEG with VCPKG ?

  


  I'm building FFMPEG in vcpkg manifest mode. Here is my vcpkg.json :

  


  {
  "name": "project",
  "version": "1.0.0",
  "dependencies": [
    {
      "name": "ffmpeg",
      "features": [
        "avcodec",
        "avdevice",
        "avfilter",
        "avformat",
        "bzip2",
        "ffmpeg",
        "lzma",
        "postproc",
        "swresample",
        "swscale",
        "x264",
        "zlib"
      ]
    },
    "iniparser",
    "jsoncpp",
    "spdlog"
  ]
}



  


  And I want to enable x11grab configuration in order to capture screen in Linux, but I found no feature was adapted.
Soon I found that —enable-libxcb was needed in configure and it was autodetect. So I build and install libxcb with source. And pkg-config can find it :

  


  $ pkg-config --modversion xcb
1.17.0


  


  But it doesn't work because in default it is —disable-autodetect in $VCPKG_ROOT/ports/ffmpeg/portfile.cmake :

  


  set(OPTIONS "--enable-pic --disable-doc --enable-debug --enable-runtime-cpudetect --disable-autodetect")


  


  I try to modify $VCPKG_ROOT/ports/ffmpeg/portfile.cmake —enalbe-autodetect, but it doesn't work either. Here is the short message when appling vcpkg install --triplet x64-linux-release

  


  -- Using source at /usr/local/src/cpp/third-party/vcpkg/buildtrees/ffmpeg/src/n7.0.2-8cb3114be3.clean
-- Getting CMake variables for x64-linux-release
-- Building Options: --enable-pic --disable-doc --enable-debug --enable-runtime-cpudetect --disable-autodetect --target-os=linux --enable-pthreads --cc=gcc --host_cc=gcc --cxx=g++ --nm=nm --ar='ar' --ranlib=ranlib --strip=strip --enable-gpl --enable-ffmpeg --disable-ffplay --disable-ffprobe --enable-avcodec --enable-avdevice --enable-avformat --enable-avfilter --enable-postproc --enable-swresample --enable-swscale --disable-alsa --disable-amf --disable-libaom --disable-libass --disable-avisynth --enable-bzlib --disable-libdav1d --disable-libfdk-aac --disable-libfontconfig --disable-libharfbuzz --disable-libfreetype --disable-libfribidi --disable-iconv --disable-libilbc --enable-lzma --disable-libmp3lame --disable-libmodplug --disable-cuda --disable-nvenc --disable-nvdec  --disable-cuvid --disable-ffnvcodec --disable-opencl --disable-opengl --disable-libopenh264 --disable-libopenjpeg --disable-libopenmpt --disable-openssl --disable-libopus --enable-sdl2 --disable-libsnappy --disable-libsoxr --disable-libspeex --disable-libssh --disable-libtensorflow --disable-libtesseract --disable-libtheora --disable-libvorbis --disable-libvpx --disable-libwebp --enable-libx264 --disable-libx265 --disable-libxml2 --enable-zlib --disable-libsrt --disable-libmfx --enable-cross-compile --pkg-config="/bin/pkg-config" --pkg-config-flags=--static
-- Building Release Options: --enable-optimizations --extra-ldflags=-L"/usr/local/src/cpp/cmq/build/vcpkg_installed/x64-linux-release/lib"
-- Building ffmpeg for Release


  


  $ ffmpeg -devices
ffmpeg version 7.0.2 Copyright (c) 2000-2024 the FFmpeg developers
  built with gcc 14.2.0 (GCC)
  configuration: --prefix=/usr/local/src/cpp/third-party/vcpkg/packages/ffmpeg_x64-linux-release --enable-pic --disable-doc --enable-debug --enable-runtime-cpudetect --disable-autodetect --target-os=linux --enable-pthreads --cc=gcc --host_cc=gcc --cxx=g++ --nm=nm --ar=ar --ranlib=ranlib --strip=strip --enable-gpl --enable-ffmpeg --disable-ffplay --disable-ffprobe --enable-avcodec --enable-avdevice --enable-avformat --enable-avfilter --enable-postproc --enable-swresample --enable-swscale --disable-alsa --disable-amf --disable-libaom --disable-libass --disable-avisynth --enable-bzlib --disable-libdav1d --disable-libfdk-aac --disable-libfontconfig --disable-libharfbuzz --disable-libfreetype --disable-libfribidi --disable-iconv --disable-libilbc --enable-lzma --disable-libmp3lame --disable-libmodplug --disable-cuda --disable-nvenc --disable-nvdec --disable-cuvid --disable-ffnvcodec --disable-opencl --disable-opengl --disable-libopenh264 --disable-libopenjpeg --disable-libopenmpt --disable-openssl --disable-libopus --disable-sdl2 --disable-libsnappy --disable-libsoxr --disable-libspeex --disable-libssh --disable-libtensorflow --disable-libtesseract --disable-libtheora --disable-libvorbis --disable-libvpx --disable-libwebp --enable-libx264 --disable-libx265 --disable-libxml2 --enable-zlib --disable-libsrt --disable-libmfx --enable-cross-compile --pkg-config=/bin/pkg-config --pkg-config-flags=--static --enable-optimizations --extra-ldflags=-L/usr/local/src/cpp/cmq/vcpkg_installed/x64-linux-release/lib --arch=x86_64 --enable-asm --enable-x86asm
  libavutil      59.  8.100 / 59.  8.100
  libavcodec     61.  3.100 / 61.  3.100
  libavformat    61.  1.100 / 61.  1.100
  libavdevice    61.  1.100 / 61.  1.100
  libavfilter    10.  1.100 / 10.  1.100
  libswscale      8.  1.100 /  8.  1.100
  libswresample   5.  1.100 /  5.  1.100
  libpostproc    58.  1.100 / 58.  1.100
Devices:
 D. = Demuxing supported
 .E = Muxing supported
 ---
 D  lavfi           Libavfilter virtual input device
 DE oss             OSS (Open Sound System) playback


  


• aarch64 : vvc : Fix building the dmvr_hv assembly with older MSVC versions

  17 décembre 2024, par Martin Storsjö

  aarch64 : vvc : Fix building the dmvr_hv assembly with older MSVC versions
  Explicitly use ldur for unaligned offsets ; newer versions of
  
  armasm64 implicitly convert ldr to ldur as necessary, but older
  
  versions require it explicitly written out.
  This fixes these build errors :
      ffmpeg\libavcodec\aarch64\vvc\inter.o.asm(2039) :
  
       error A2518 : operand 2 : Memory offset must be aligned
  
              ldr             s5, [x1, #1]
  
      ffmpeg\libavcodec\aarch64\vvc\inter.o.asm(2250) :
  
       error A2518 : operand 2 : Memory offset must be aligned
  
              ldr             d7, [x1, #2]
  Signed-off-by : Martin Storsjö <martin@martin.st>
  

  • [DH] libavcodec/aarch64/vvc/inter.S