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• How to enable X264 with thread for Android on Mac OS X ?

  3 janvier 2016, par Jerikc XIONG

  I use the following script to compile x264 :

  #!/bin/bash
  
  # Based on https://github.com/yixia/x264/blob/master/build_android.sh
  
  
  
  if [ -z "$ANDROID_NDK" ]; then
  
      echo "You must define ANDROID_NDK before starting."
  
      echo "They must point to your NDK directories.\n"
  
      exit 1
  
  fi
  
  
  
  # Detect OS
  
  OS=`uname`
  
  HOST_ARCH=`uname -m`
  
  export CCACHE=; type ccache >/dev/null 2>&1 && export CCACHE=ccache
  
  if [ $OS == 'Linux' ]; then
  
      export HOST_SYSTEM=linux-$HOST_ARCH
  
  elif [ $OS == 'Darwin' ]; then
  
      export HOST_SYSTEM=darwin-$HOST_ARCH
  
  fi
  
  
  
  
  
  SOURCE=`pwd`
  
  PREFIX=$SOURCE/build/android
  
  
  
  SYSROOT=$ANDROID_NDK/platforms/android-12/arch-arm
  
  CROSS_PREFIX=$ANDROID_NDK/toolchains/arm-linux-androideabi-4.9/prebuilt/$HOST_SYSTEM/bin/arm-linux-androideabi-
  
  EXTRA_CFLAGS="-march=armv7-a -mfloat-abi=softfp -mfpu=neon -D__ARM_ARCH_7__ -D__ARM_ARCH_7A__"
  
  EXTRA_LDFLAGS="-nostdlib"
  
  
  
  ./configure  --prefix=$PREFIX \
  
      --cross-prefix=$CROSS_PREFIX \
  
      --extra-cflags="$EXTRA_CFLAGS" \
  
      --extra-ldflags="$EXTRA_LDFLAGS" \
  
      --enable-pic \
  
      --enable-static \
  
      --enable-strip \
  
      --disable-cli \
  
      --host=arm-linux \
  
      --sysroot=$SYSROOT
  
  
  
  make clean
  
  make STRIP= -j4 install || exit 1

  After i add ’-lpthread’ , i got the following compile error :

  $ sh build_android.sh 
  
  No working C compiler found.
  
  Makefile:3: config.mak: No such file or directory
  
  ./configure
  
  platform:      X86_64
  
  byte order:    little-endian
  
  system:        MACOSX
  
  cli:           yes
  
  libx264:       internal
  
  shared:        no
  
  static:        no
  
  asm:           yes
  
  interlaced:    yes
  
  avs:           avxsynth
  
  lavf:          no
  
  ffms:          no
  
  mp4:           no
  
  gpl:           yes
  
  thread:        posix
  
  opencl:        yes
  
  filters:       crop select_every 
  
  debug:         no
  
  gprof:         no
  
  strip:         no
  
  PIC:           no
  
  bit depth:     8
  
  chroma format: all
  
  
  
  You can run 'make' or 'make fprofiled' now.
  
  dependency file generation...
  
  clang: error: no such file or directory: '/common/mc.c'
  
  clang: error: no such file or directory: '/common/predict.c'
  
  clang: error: no such file or directory: '/common/pixel.c'
  
  clang: error: no such file or directory: '/common/macroblock.c'
  
  clang: error: no such file or directory: '/common/frame.c'
  
  clang: error: no such file or directory: '/common/dct.c'
  
  clang: error: no such file or directory: '/common/cpu.c'
  
  clang: error: no such file or directory: '/common/cabac.c'
  
  clang: error: no such file or directory: '/common/common.c'
  
  clang: error: no such file or directory: '/common/osdep.c'
  
  clang: error: no such file or directory: '/common/rectangle.c'
  
  clang: error: no such file or directory: '/common/set.c'
  
  clang: error: no such file or directory: '/common/quant.c'
  
  clang: error: no such file or directory: '/common/deblock.c'
  
  clang: error: no such file or directory: '/common/vlc.c'
  
  clang: error: no such file or directory: '/common/mvpred.c'
  
  clang: error: no such file or directory: '/common/bitstream.c'
  
  clang: error: no such file or directory: '/encoder/analyse.c'
  
  clang: error: no such file or directory: '/encoder/me.c'
  
  clang: error: no such file or directory: '/encoder/ratecontrol.c'
  
  clang: error: no such file or directory: '/encoder/set.c'
  
  clang: error: no such file or directory: '/encoder/macroblock.c'
  
  clang: error: no such file or directory: '/encoder/cabac.c'
  
  clang: error: no such file or directory: '/encoder/cavlc.c'
  
  clang: error: no such file or directory: '/encoder/encoder.c'
  
  clang: error: no such file or directory: '/encoder/lookahead.c'
  
  clang: error: no such file or directory: '/x264.c'
  
  clang: error: no such file or directory: 'x264.o'
  
  clang: error: no input files
  
  clang: error: no such file or directory: '/input/input.c'
  
  clang: error: no such file or directory: 'input/input.o'
  
  clang: error: no input files
  
  clang: error: no such file or directory: '/input/timecode.c'
  
  clang: error: no such file or directory: 'input/timecode.o'
  
  clang: error: no input files
  
  clang: error: no such file or directory: '/input/raw.c'
  
  clang: error: no such file or directory: 'input/raw.o'
  
  clang: error: no input files
  
  clang: error: no such file or directory: '/input/y4m.c'
  
  clang: error: no such file or directory: 'input/y4m.o'
  
  clang: error: no input files
  
  clang: error: no such file or directory: '/output/raw.c'
  
  clang: error: no such file or directory: 'output/raw.o'
  
  clang: error: no input files
  
  clang: error: no such file or directory: '/output/matroska.c'
  
  clang: error: no such file or directory: 'output/matroska.o'
  
  clang: error: no input files
  
  clang: error: no such file or directory: '/output/matroska_ebml.c'
  
  clang: error: no such file or directory: 'output/matroska_ebml.o'
  
  clang: error: no input files
  
  clang: error: no such file or directory: '/output/flv.c'
  
  clang: error: no such file or directory: 'output/flv.o'
  
  clang: error: no input files
  
  clang: error: no such file or directory: '/output/flv_bytestream.c'
  
  clang: error: no such file or directory: 'output/flv_bytestream.o'
  
  clang: error: no input files
  
  clang: error: no such file or directory: '/filters/filters.c'
  
  clang: error: no such file or directory: 'filters/filters.o'
  
  clang: error: no input files
  
  clang: error: no such file or directory: '/filters/video/video.c'
  
  clang: error: no such file or directory: 'filters/video/video.o'
  
  clang: error: no input files
  
  clang: error: no such file or directory: '/filters/video/source.c'
  
  clang: error: no such file or directory: 'filters/video/source.o'
  
  clang: error: no input files
  
  clang: error: no such file or directory: '/filters/video/internal.c'
  
  clang: error: no such file or directory: 'filters/video/internal.o'
  
  clang: error: no input files
  
  clang: error: no such file or directory: '/filters/video/resize.c'
  
  clang: error: no such file or directory: 'filters/video/resize.o'
  
  clang: error: no input files
  
  clang: error: no such file or directory: '/filters/video/cache.c'
  
  clang: error: no such file or directory: 'filters/video/cache.o'
  
  clang: error: no input files
  
  clang: error: no such file or directory: '/filters/video/fix_vfr_pts.c'
  
  clang: error: no such file or directory: 'filters/video/fix_vfr_pts.o'
  
  clang: error: no input files
  
  clang: error: no such file or directory: '/filters/video/select_every.c'
  
  clang: error: no such file or directory: 'filters/video/select_every.o'
  
  clang: error: no input files
  
  clang: error: no such file or directory: '/filters/video/crop.c'
  
  clang: error: no such file or directory: 'filters/video/crop.o'
  
  clang: error: no input files
  
  clang: error: no such file or directory: '/filters/video/depth.c'
  
  clang: error: no such file or directory: 'filters/video/depth.o'
  
  clang: error: no input files
  
  clang: error: no such file or directory: '/extras/getopt.c'
  
  clang: error: no such file or directory: 'extras/getopt.o'
  
  clang: error: no input files
  
  make: *** [.depend] Error 1

  How to enable pthread support ?

• C flags which gives priority to quality for decoded images in ffmpeg

  18 janvier 2016, par Tank2005

  I’m trying to decode h.264 streaming with ffmpeg(latest version) on Android NDK.

  I succeeded to get a decoded frame. But, an aquired image is very dirty even if low latency flag is disabled.

  If I want to give priority to quality over decoding speed, which flags should I specify ?

  bool initCodec(bool low_latency)
  
  {
  
      av_register_all();
  
  
  
      codec = avcodec_find_decoder(AV_CODEC_ID_H264);
  
      if(!codec) return false;
  
  
  
      context = avcodec_alloc_context3(codec);
  
      if(!context) return false;
  
  
  
      if(codec->capabilities & CODEC_CAP_TRUNCATED) context->flags |= CODEC_FLAG_TRUNCATED;
  
      if(low_latency == true) context->flags |= CODEC_FLAG_LOW_DELAY;
  
  
  
      frame = av_frame_alloc();
  
  
  
      int res = avcodec_open2(context, codec, NULL);
  
      if (res < 0) {
  
          qDebug() << "Coundn't open codec :" << res;
  
          return false;
  
      }
  
  
  
      av_init_packet(&avpkt);
  
      return true;
  
  }
  
  
  
  void sendBytes(unsigned char *buf, int buflen)
  
  {
  
      avpkt.size = buflen;
  
      avpkt.data = buf;
  
  
  
      int got_frame, len;
  
      while (avpkt.size > 0) {
  
          len = avcodec_decode_video2(context, frame, &got_frame, &avpkt);
  
          if (len < 0) {
  
              qDebug() << "Error while decoding : " << len;
  
              break;
  
          }
  
          if (got_frame) {
  
              onGotFrame(frame);
  
          }
  
          avpkt.size -= len;
  
          avpkt.data += len;
  
      }
  
  }

  

  Ex : I heard that it made a problem while compiling the library. So I write a compile option here(I built it on OpenSUSE Linux).

  #!/bin/bash
  
  NDK=/home/ndk
  
  SYSROOT=$NDK/platforms/android-9/arch-arm/
  
  TOOLCHAIN=$NDK/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64
  
  function build_one
  
  {
  
  ./configure \
  
  --prefix=$PREFIX \
  
  --enable-shared \
  
  --disable-static \
  
  --disable-avdevice \
  
  --disable-doc \
  
  --disable-symver \
  
  --disable-encoders \
  
  --disable-decoders \
  
  --enable-decoder=h264 \
  
  --enable-decoder=aac \
  
  --disable-protocols \
  
  --disable-demuxers \
  
  --disable-muxers \
  
  --disable-filters \
  
  --disable-network \
  
  --disable-parsers \
  
  --cross-prefix=$TOOLCHAIN/bin/arm-linux-androideabi- \
  
  --target-os=linux \
  
  --arch=arm \
  
  --enable-asm --enable-yasm \
  
  --enable-cross-compile \
  
  --sysroot=$SYSROOT \
  
  --extra-cflags="-Os -marm -march=armv7-a -mfloat-abi=softfp -mfpu=neon" \
  
  --extra-ldflags="-Wl,--fix-cortex-a8" \
  
  $ADDITIONAL_CONFIGURE_FLAG
  
  make clean
  
  make
  
  make install
  
  }
  
  CPU=armv7-a
  
  PREFIX=$(pwd)/android/$CPU
  
  build_on

• How to config ffmpeg with android on eclipse using windows 7 64 bit ?

  25 janvier 2016, par Mahmoud Alnouno

  I’m using ffmpeg version 2.8.5 (last version)
  and ndk version r10e (last version)
  to compile ffmpeg for a android
  I’m using this script bulid_android.sh

  #!/usr/bin/env bash
  
  NDK=D:/AndroidNDK/android-ndk-r10e
  
  SYSROOT=$NDK/platforms/android-18/arch-arm/
  
  TOOLCHAIN=$NDK/toolchains/arm-linux-androideabi-4.8/prebuilt/windows-x86_64
  
  function build_one
  
  {
  
  ./configure \
  
      --arch=arm \
  
      --target-os=android \
  
      --enable-runtime-cpudetect \
  
      --enable-pic \
  
      --disable-shared \
  
      --enable-static \
  
      --extra-cflags='-march=armv6' \
  
      --extra-ldflags="$ADDI_LDFLAGS" \
  
      --enable-ffmpeg \
  
      --disable-ffplay \
  
      --disable-ffprobe \
  
      --disable-ffserver\
  
      --disable-network \
  
      --enable-cross-compile \
  
      --cross-prefix=$TOOLCHAIN/bin/arm-linux-androideabi- \
  
      --sysroot=$SYSROOT \
  
      $ADDITIONAL_CONFIGURE_FLAG
  
  make clean
  
  make -j4
  
  make install
  
  }
  
  
  
  CPU=arm
  
  PREFIX=$(pwd)/android/$CPU
  
  ADDI_CFLAGS="-marm"
  
  build_one

  I enter this cmd using msys

  chmod +x build_android.sh

  and this

  ./build_android.sh

  I get this error :

  -gcc is unable to create an executable file.
  
  C compiler test failed.

  help me how to resolve this problem ?