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• Building ffmpeg 3.3 with android-ndk-r14b

  23 mai 2017, par Priyo Chatterjee

  Changes made in configure file of ffmpeg :

  SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
  
  LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
  
  SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
  
  SLIB_INSTALL_LINKS='$(SLIBNAME)'

  build_configure.sh

  #!/bin/bash
  
    ######################################################
  
  # Usage:
  
  # put this script in top of FFmpeg source tree
  
  # ./build_android
  
  # It generates binary for following architectures:
  
  # ARMv6
  
  # ARMv6+VFP
  
  # ARMv7+VFM-ïd16 (Tegra2)
  
  # ARMv7+Neon (Cortex-A8)
  
  # Customizing:
  
  # 1. Feel free to change ./configure parameters for more features
  
  # 2. To adapt other ARM variants
  
  # set $CPU and $OPTIMIZE_CFLAGS
  
  # call build_one
  
  ######################################################
  
  NDK=$HOME/Fame/android-ndk-r14b
  
  PLATFORM=$NDK/platforms/android-9/arch-arm/
  
  TOOLCHAIN=$NDK/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64
  
  function build_one
  
  {
  
  ./configure --target-os=linux \
  
    --prefix=$PREFIX \
  
    --enable-cross-compile \
  
    --arch=arm \
  
    --cc=$PREBUILT/bin/arm-linux-androideabi-gcc \
  
    --cross-prefix=$PREBUILT/bin/arm-linux-androideabi-4.9 \
  
    --nm=$PREBUILT/bin/arm-linux-androideabi-nm \
  
    --sysroot=$PLATFORM \
  
    --extra-cflags=" -O3 -fpic -DANDROID -DHAVE_SYS_UIO_H=1 -Dipv6mr_interface=ipv6mr_ifindex -fasm -Wno-psabi -fno-short-enums -fno-strict-aliasing -finline-limit=300 $OPTIMIZE_CFLAGS " \
  
    --disable-shared \
  
    --enable-static \
  
    --disable-everything \
  
    --enable-demuxer=mov \
  
    --enable-demuxer=h264 \
  
    --disable-ffplay \
  
    --enable-protocol=file \
  
    --enable-avformat \
  
    --enable-avcodec \
  
    --enable-decoder=rawvideo \
  
    --enable-decoder=mjpeg \
  
    --enable-decoder=h263 \
  
    --enable-decoder=h265 \
  
    --enable-decoder=mpeg4 \
  
    --enable-decoder=h264 \
  
    --enable-parser=h264 \
  
    --enable-parser=h265
  
    --enabled-network \
  
    --enable-zlib \
  
    --disable-avfilter \
  
    --disable-avdevice \
  
    --disable-yasm \
  
    --disable-ffmpeg
  
    --disable-ffprobe
  
    --disable-ffserver
  
    $ADDITIONAL_CONFIGURE_FLAG
  
  
  
  make clean
  
  make  -j4 install
  
  $PREBUILT/bin/arm-linux-androideabi-ar d libavcodec/libavcodec.a inverse.o
  
  $PREBUILT/bin/arm-linux-androideabi-ld -rpath-link=$PLATFORM/usr/lib -L$PLATFORM/usr/lib \
  
  -soname libffmpeg.so -nostdlib,noexecstack -Bsymbolic \
  
  --whole-archive --no-undefined \
  
  -o $PREFIX/libffmpeg.so libavcodec/libavcodec.a libavformat/libavformat.a \
  
  libavutil/libavutil.a libswscale/libswscale.a \
  
  $PLATFORM/usr/lib/libc.so $PLATFORM/usr/lib/libm.so \
  
  $PLATFORM/usr/lib/libz.so \
  
  $PLATFORM/usr/lib/libdl.so $PLATFORM/usr/lib/liblog.so \
  
  --dynamic-linker=/system/bin/linker \
  
  $PREBUILT/lib/gcc/arm-linux-androideabi/4.9/libgcc.a
  
  }
  
  
  
  #arm v6
  
  #CPU=armv6
  
  #OPTIMIZE_CFLAGS="-marm -march=$CPU"
  
  #PREFIX=./android/$CPU
  
  #ADDITIONAL_CONFIGURE_FLAG=
  
  #build_one
  
  
  
  #arm v7vfpv3
  
  CPU=armv7-a
  
  OPTIMIZE_CFLAGS="-mfloat-abi=softfp -mfpu=vfpv3-d16 -marm -march=$CPU "
  
  PREFIX=./android/$CPU
  
  ADDITIONAL_CONFIGURE_FLAG=
  
  build_one
  
  
  
  #arm v7vfp
  
  #CPU=armv7-a
  
  #OPTIMIZE_CFLAGS="-mfloat-abi=softfp -mfpu=vfp -marm -march=$CPU "
  
  #PREFIX=./android/$CPU-vfp
  
  #ADDITIONAL_CONFIGURE_FLAG=
  
  #build_one
  
  
  
  #arm v7n
  
  #CPU=armv7-a
  
  #OPTIMIZE_CFLAGS="-mfloat-abi=softfp -mfpu=neon -marm -march=$CPU -mtune=cortex-a8"
  
  #PREFIX=./android/$CPU
  
  #ADDITIONAL_CONFIGURE_FLAG=--enable-neon
  
  #build_one
  
  
  
  #arm v6+vfp
  
  #CPU=armv6
  
  #OPTIMIZE_CFLAGS="-DCMP_HAVE_VFP -mfloat-abi=softfp -mfpu=vfp -marm -march=$CPU"
  
  #PREFIX=./android/${CPU}_vfp
  
  #ADDITIONAL_CONFIGURE_FLAG=
  
  #build_one

  Error in the console I am getting :
  ./build_android.sh

  ./configure : 466 : ./configure : cannot create ffbuild/config.log : Directory nonexistent
  ./configure : 466 : ./configure : cannot create ffbuild/config.log : Directory nonexistent
  /bin/arm-linux-androideabi-gcc is unable to create an executable file.
  C compiler test failed.

• android nkd no include path in which to search for limits.h #include_next

  3 octobre 2018, par Yunga

  When i build the x264 ndk library , i face a problem .
  I’ve compiled both in window and liunx environment.i got the same mistakes...

  like this :

  In file included 
  
  from c:\users\xxx\appdata\local\android\sdk\ndk-bundle\toolchains\
  
  aarch64-linux-android-4.9\prebuilt\windows-x86_64\lib\gcc\aarch64-linux-android\4.9.x\include-fixed\syslimits.h:7:0,
  
  from c:\users\xxx\appdata\local\android\sdk\ndk-bundle\toolchains\
  
  aarch64-linux-android-4.9\prebuilt\windows-x86_64\lib\gcc\aarch64-linux-android\4.9.x\include-fixed\limits.h:34,
  
  from ./common/common.h:123,
  
  from ./x264cli.h:30,
  
  from ./input/input.h:31,
  
  from ./filters/video/video.h:29,
  
  from ./filters/video/depth.c:26:
  
  c:\users\xxx\appdata\local\android\sdk\ndk-bundle\toolchains\aarch64-linux-android-4.9\
  
  prebuilt\windows-x86_64\lib\gcc\aarch64-linux-android\4.9.x\include-fixed\limits.h:168:61: 
  
  error: no include path in which to search for limits.h
  
  #include_next   /* recurse down to the real one */
  
  
  
  make: *** [.depend] Error 1

  Here is my script :

  SYSROOT=$NDK/platforms/android-21/arch-arm64
  
  TOOLCHAIN=$NDK/toolchains/aarch64-linux-android-4.9/prebuilt/windows-x86_64
  
  CC=$TOOLCHAIN/bin/aarch64-linux-android-gcc-4.9.x
  
  #CXX=$TOOLCHAIN/bin/aarch64-linux-android-g++
  
  CROSS_PREFIX=$TOOLCHAIN/bin/aarch64-linux-android-
  
  EXTRA_CFLAGS="-march=armv8-a -D__ANDROID__"
  
  EXTRA_LDFLAGS="-nostdlib"
  
  
  
  ./configure --prefix=$PREFIX \
  
          --host=arm-linux \
  
          --sysroot=$SYSROOT \
  
          --cross-prefix=$CROSS_PREFIX \
  
          --extra-cflags="$EXTRA_CFLAGS" \
  
          --extra-ldflags="$EXTRA_LDFLAGS" \
  
          --enable-pic \
  
          --enable-static \
  
          --enable-strip \
  
          --disable-cli \
  
          --disable-win32thread \
  
          --disable-avs \
  
          --disable-swscale \
  
          --disable-lavf \
  
          --disable-ffms \
  
          --disable-gpac \
  
          --disable-lsmash \
  
          --disable-asm \
  
          --disable-opencl

  does anyone know how to solve it ? thanks every much.

• Encoding RGB frames using x264 and AVCodec in C

  6 novembre 2016, par deepwork

  I have RGB24 frames streamed from camera and i want to encode them into h264 ,i found that AVCodec and x264 can do so, the problem is x264 as default accepts YUV420 as input so what i wrote was a program which convert RGB frames to YUV420 .that was by sws_scale function .this works well except that it does not satisfy the required FPS because the converting (RGB->YUV420) takes time.

  This is how i setup my encoder context :

  videoStream->id = 0;
  
  vCodecCtx = videoStream->codec;
  
  
  
  vCodecCtx->coder_type       = AVMEDIA_TYPE_VIDEO;
  
  vCodecCtx->codec_id         = AV_CODEC_ID_H264;
  
  vCodecCtx->bit_rate         = 400000;
  
  vCodecCtx->width            = Width;
  
  vCodecCtx->height           = Height;
  
  vCodecCtx->time_base.den    = FPS;
  
  vCodecCtx->time_base.num    = 1;
  
  //vCodecCtx->time_base      = (AVRational){1,};
  
  vCodecCtx->gop_size         = 12;
  
  vCodecCtx->max_b_frames     = 1;
  
  vCodecCtx->pix_fmt          = AV_PIX_FMT_YUV420P;
  
  
  
  if(formatCtx->oformat->flags & AVFMT_GLOBALHEADER)
  
      vCodecCtx->flags |= CODEC_FLAG_GLOBAL_HEADER;
  
  
  
  av_opt_set(vCodecCtx->priv_data, "preset", "ultrafast", 0);
  
  av_opt_set(vCodecCtx->priv_data, "profile", "baseline", AV_OPT_SEARCH_CHILDREN);
  
  
  
  if (avcodec_open2(vCodecCtx, h264Codec, NULL) < 0){
  
      return 0;
  
  }

  when i changes AV_PIX_FMT_YUV420P to AV_PIX_FMT_RGB24 ,avcodec_open2 will fail.
  i read that there is a version of libx264 for RGB called libx264rgb but i even dont know whether i have to rebuild x264 with enabling this option or to download another source or i have to do it programmatically with the first x264 lib.

  the question is how to enable RGB as input to libx264 to use with libavcodec in C .or how to make the encoding or sws_scale more fast .

  Edit :

  How i built ffmpeg :

  NDK=D:/AndroidDev/android-ndk-r9
  
  PLATFORM=$NDK/platforms/android-18/arch-arm/
  
  PREBUILT=$NDK/toolchains/arm-linux-androideabi-4.8/prebuilt/windows-x86_64
  
  
  
  GENERAL="\
  
  --enable-small \
  
  --enable-cross-compile \
  
  --extra-libs="-lgcc" \
  
  --arch=arm \
  
  --cc=$PREBUILT/bin/arm-linux-androideabi-gcc \
  
  --cross-prefix=$PREBUILT/bin/arm-linux-androideabi- \
  
  --nm=$PREBUILT/bin/arm-linux-androideabi-nm \
  
  --extra-cflags="-I../x264/android/arm/include" \
  
  --extra-ldflags="-L../x264/android/arm/lib" "
  
  
  
  
  
  MODULES="\
  
  --enable-gpl \
  
  --enable-libx264"
  
  
  
  function build_ARMv6
  
  {
  
    ./configure \
  
    --target-os=linux \
  
    --prefix=./android/armeabi \
  
    ${GENERAL} \
  
    --sysroot=$PLATFORM \
  
    --enable-shared \
  
    --disable-static \
  
    --extra-cflags=" -O3 -fpic -fasm -Wno-psabi -fno-short-enums -fno-strict-aliasing -finline-limit=300 -mfloat-abi=softfp -mfpu=vfp -marm -march=armv6" \
  
    --extra-ldflags="-lx264 -Wl,-rpath-link=$PLATFORM/usr/lib -L$PLATFORM/usr/lib -nostdlib -lc -lm -ldl -llog" \
  
    --enable-zlib \
  
    ${MODULES} \
  
    --disable-doc \
  
    --enable-neon
  
  
  
    make clean
  
    make
  
    make install
  
  }
  
  
  
  build_ARMv6
  
  
  
  echo Android ARMEABI builds finished

  How i built x264 :

  NDK=D:/AndroidDev/android-ndk-r9
  
  PLATFORM=$NDK/platforms/android-18/arch-arm/
  
  TOOLCHAIN=$NDK/toolchains/arm-linux-androideabi-4.8/prebuilt/windows-x86_64
  
  PREFIX=./android/arm
  
  
  
  function build_one
  
  {
  
    ./configure \
  
    --prefix=$PREFIX \
  
    --enable-static \
  
    --enable-pic \
  
    --host=arm-linux \
  
    --cross-prefix=$TOOLCHAIN/bin/arm-linux-androideabi- \
  
    --sysroot=$PLATFORM
  
  
  
    make clean
  
    make
  
    make install
  
  }
  
  
  
  build_one
  
  
  
  echo Android ARM builds finished