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• libffmpeg.so Not Executing ffmpeg Commands

  27 janvier 2016, par Chirag Darji
  • libffmpeg.so is not working with command line arguments
  • I have successfully compiles ffmpeg and get static libffmpeg.so library.
  • I installed using android.mk and its installed successfully

  • but unable to execute ffmpeg command.

    *My build.sh is as follows 
    
    function build_r8b_test
    
    {
    
    bash configure --target-os=linux \
    
    --arch=arm \
    
    --cpu=cortex-a8 \
    
    --enable-runtime-cpudetect \
    
    --prefix=$PREFIX \
    
    --enable-pic \
    
    --disable-shared \
    
    --enable-static \
    
    --enable-cross-compile \
    
    --cc=$PREBUILT/bin/arm-linux-androideabi-gcc \
    
    --cross-prefix=$PREBUILT/bin/arm-linux-androideabi- \
    
    --sysroot="$PLATFORM" \
    
    --extra-cflags="-I../x264 -mfloat-abi=softfp -mfpu=neon -fPIE -pie -fPIC -DANDROID -marm -march=armv7-" \
    
    --extra-ldflags="-L../x264 -L$PREBUILT/lib/gcc/arm-linux-androideabi/4.9" \
    
    --extra-libs="-lgcc" \
    
    --enable-gpl \
    
    --enable-version3 \
    
    --enable-nonfree \
    
    --disable-doc \
    
    --enable-yasm \
    
    --enable-decoders \
    
    --enable-encoders \
    
    --enable-muxers \
    
    --enable-demuxers \
    
    --enable-parsers \
    
    --enable-protocols \
    
    --enable-filters \
    
    --disable-indevs \
    
    --disable-outdevs \
    
    --enable-hwaccels \
    
    --disable-ffmpeg \
    
    --disable-ffplay \
    
    --disable-ffprobe \
    
    --disable-ffserver \
    
    --disable-network \
    
    --enable-zlib \
    
    --enable-demuxer=mov \
    
    --enable-demuxer=h264 \
    
    --enable-protocol=file \
    
    --enable-avformat \
    
    --enable-avcodec \
    
    --enable-decoder=rawvideo \
    
    --enable-decoder=mjpeg \
    
    --enable-decoder=h263 \
    
    --enable-decoder=mpeg4 \
    
    --enable-decoder=h264 \
    
    --enable-parser=h264 \
    
    --enable-encoder=mpeg4 \
    
    --disable-asm \
    
    --enable-neon \
    
    --enable-armv5te \
    
    --disable-network \
    
    --enable-avfilter \
    
    --disable-avdevice \
    
    --enable-postproc \
    
    
    
    $ADDITIONAL_CONFIGURE_FLAG
    
    make clean
    
    make
    
    make  -j4 install
    
    $PREBUILT/bin/arm-linux-androideabi-ld -rpath-          link=$PLATFORM/usr/lib -L$PLATFORM/usr/lib  -soname libffmpeg.so -shared -nostdlib  -z noexecstack -Bsymbolic --whole-archive --no-undefined -o $PREFIX/libffmpeg.so libavcodec/libavcodec.a libavformat/libavformat.a libavutil/libavutil.a libavfilter/libavfilter.a libpostproc/libpostproc.a libswresample/libswresample.a libswscale/libswscale.a   -lc -lm -lz -ldl -llog  --warn-search-mismatch  --dynamic-linker=/system/bin/linker $PREBUILT/lib/gcc/arm-linux-androideabi/4.9/libgcc.a
    
    }
    
    #arm v7vfpv3
    
    CPU=armv7-a
    
    OPTIMIZE_CFLAGS="-mfloat-abi=softfp -mfpu=vfpv3-d16 -marm -march=$CPU "
    
    PREFIX=./android/$CPU
    
    ADDITIONAL_CONFIGURE_FLAG=
    
    build_r8b_test
    
    
    
    * and my androi.mk is as follow
    
    LOCAL_PATH := $(call my-dir)
    
    APP_ABI := armeabi-v7a
    
    include $(CLEAR_VARS)
    
    LOCAL_MODULE =myffmpeg
    
    LOCAL_SRC_FILES :=libffmpeg.so
    
    include $(PREBUILT_SHARED_LIBRARY)
    
    include $(CLEAR_VARS)
    
    PATH_TO_FFMPEG_SOURCE:=$(LOCAL_PATH)/ffmpeg
    
    LOCAL_C_INCLUDES += $(PATH_TO_FFMPEG_SOURCE)
    
    LOCAL_MODULE=ffmpeg-jni
    
    LOCAL_LDLIBS := -L/home/admin/android-sdk-linux/ndk-bundle/platforms/android-21/arch-arm/usr/lib -L$(LOCAL_PATH) -llog -ljnigraphics -lz -ldl -lgcc -lm
    
    LOCAL_SRC_FILES := ffmpeg-jni.c ffmpeg/cmdutils.h ffmpeg/cmdutils.c ffmpeg/ffmpeg.h ffmpeg/ffmpeg_opt.c ffmpeg/ffmpeg_filter.c
    
    
    
    LOCAL_SHARED_LIBRARIES:=myffmpeg
    
    include $(BUILD_SHARED_LIBRARY)

    • I have successfully installed armeabi obj and armeabi-v7a
      But it is not works simple ffmpeg command like (ffmpeg -y -i /mnt/sdcard/app.mp4 /mnt/sdcard/app.mkv).
      Applciation is terminate at ret = ffmpeg_parse_options(argc, argv) ; in ffmpeg-jni.c
      which is copied from ffmpeg.c.
      If i am doing wrond build please help me to get out this.

• lavc/lpc : exploit even symmetry of window function

  9 mars 2016, par Ganesh Ajjanagadde

  lavc/lpc : exploit even symmetry of window function
  Yields 2x improvement in function performance, and boosts aac encoding
  
  speed by 4% overall. Sample benchmark (Haswell+GCC under -march=native) :
  
  after :
  
  ffmpeg -i sin.flac -acodec aac -y sin_new.aac  5.22s user 0.03s system 105% cpu 4.970 total
  before :
  
  ffmpeg -i sin.flac -acodec aac -y sin_new.aac  5.40s user 0.05s system 105% cpu 5.162 total
  Reviewed-by : Rostislav Pehlivanov <atomnuker@gmail.com>
  
  Signed-off-by : Ganesh Ajjanagadde <gajjanag@gmail.com>
  

  • [DH] libavcodec/lpc.c

• 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 ?