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• How to compile ffmpeg to support hw codec ?

  23 juillet 2015, par Kame Li

  I modified the build_libstagefright.sh to compile ffmpeg-2.7.1, and I got following libraries. But I can not load them successfully.
  ./ffmpeg-2.7.1/libswresample/libswresample.so
  ./ffmpeg-2.7.1/libavfilter/libavfilter.so
  ./ffmpeg-2.7.1/libavcodec/libavcodec.so
  ./ffmpeg-2.7.1/libswscale/libswscale.so
  ./ffmpeg-2.7.1/libavformat/libavformat.so
  ./ffmpeg-2.7.1/libavutil/libavutil.so`

  Detail of build_libstagefright.sh is as bellow. Can anyone help to take a look what happen ? If you already compiled the libs to support hw codec, can you share them for me ? Thanks so much.
  -------------------------------------------------------------------------------
  # !/bin/bash

  #NDK=/home/ming/Tools/android-ndk-r9d
  
  NDK=/home/ming/Tools/android-ndk-r10e
  
  SYSROOT=$NDK/platforms/android-19/arch-arm/
  
  TOOLCHAIN=$NDK/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64
  
  
  
  if [ "$NDK" = "" ]; then
  
      echo NDK variable not set, assuming ${HOME}/android-ndk
  
      export NDK=${HOME}/android-ndk
  
  fi
  
  
  
  echo "Fetching Android system headers"
  
  git clone --depth=1 --branch gingerbread-release                             git://github.com/CyanogenMod/android_frameworks_base.git ../android-    source/frameworks/base
  
  git clone --depth=1 --branch gingerbread-release     git://github.com/CyanogenMod/android_system_core.git ../android-   source/system/core
  
  
  
  echo "Fetching Android libraries for linking"
  
  # Libraries from any froyo/gingerbread device/emulator should work
  
  # fine, since the symbols used should be available on most of them.
  
  if [ ! -d "../android-libs" ]; then
  
      if [ ! -f "../update-cm-7.0.3-N1-signed.zip" ]; then
  
          wget http://download.cyanogenmod.com/get/update-cm-7.0.3-N1-signed.zip -P../
  
      fi
  
      unzip ../update-cm-7.0.3-N1-signed.zip system/lib/* -d../
  
      mv ../system/lib ../android-libs
  
      rmdir ../system
  
  fi
  
  
  
  SYSROOT=$NDK/platforms/android-19/arch-arm
  
  # Expand the prebuilt/* path into the correct one
  
  #TOOLCHAIN=`echo $NDK/toolchains/arm-linux-androideabi-4.4.3/prebuilt/*-x86`
  
  export PATH=$TOOLCHAIN/bin:$PATH
  
  ANDROID_SOURCE=../android-source
  
  ANDROID_LIBS=../android-libs
  
  ABI="armeabi-v7a"
  
  ADDI_CFLAGS="-marm"
  
  
  
  rm -rf ../build/stagefright
  
  mkdir -p ../build/stagefright
  
  
  
  DEST=../build/stagefright
  
  # --cpu=armv7-a
  
  FLAGS="--target-os=linux --cross-prefix=arm-linux-androideabi- --arch=arm --                        enable-shared --disable-static --disable-doc --disable-ffserver --enable-cross-    compile --cpu=armv7-a"
  
  FLAGS="$FLAGS --sysroot=$SYSROOT"
  
  FLAGS="$FLAGS --disable-avdevice --disable-decoder=h264 --disable-    decoder=h264_vdpau --enable-libstagefright-h264"
  
  
  
  EXTRA_CFLAGS="-I$ANDROID_SOURCE/frameworks/base/include -    I$ANDROID_SOURCE/system/core/include"
  
  EXTRA_CFLAGS="$EXTRA_CFLAGS -    I$ANDROID_SOURCE/frameworks/base/media/libstagefright"
  
  EXTRA_CFLAGS="$EXTRA_CFLAGS -    I$ANDROID_SOURCE/frameworks/base/include/media/stagefright/openmax"
  
  #EXTRA_CFLAGS="$EXTRA_CFLAGS -I$NDK/sources/cxx-stl/gnu-libstdc++/include -    I$NDK/sources/cxx-stl/gnu-libstdc++/libs/$ABI/include"
  
  EXTRA_CFLAGS="$EXTRA_CFLAGS -I$NDK/sources/cxx-stl/gnu-libstdc++/4.8/include -I$NDK/sources/cxx-stl/gnu-libstdc++/4.8/libs/$ABI/include"
  
  
  
  #-march=armv7-a -mfloat-abi=softfp -mfpu=neon

  EXTRA_CFLAGS="$EXTRA_CFLAGS -march=armv7-a -mfloat-abi=softfp -mfpu=neon"

  EXTRA_CFLAGS="$EXTRA_CFLAGS -Os -fpic $ADDI_CFLAGS"
  
  
  
  #EXTRA_LDFLAGS="-Wl,--fix-cortex-a8 -L$ANDROID_LIBS -Wl,-rpath-    link,$ANDROID_LIBS -L$NDK/sources/cxx-stl/gnu-libstdc++/libs/$ABI"
  
  EXTRA_LDFLAGS="-Wl,--fix-cortex-a8 -L$ANDROID_LIBS -Wl,-rpath-    link,$ANDROID_LIBS -L$NDK/sources/cxx-stl/gnu-libstdc++/4.8/libs/$ABI  -    lstagefright -lstdc++ -lutils -lbinder -lgnustl_static -lgnustl_shared     $ADDI_LDFLAGS"
  
  
  
  EXTRA_CXXFLAGS="-Wno-multichar -fno-exceptions -fno-rtti"
  
  DEST="$DEST/$ABI"
  
  FLAGS="$FLAGS --prefix=$DEST"
  
  
  
  mkdir -p $DEST
  
  
  
  echo $FLAGS --extra-cflags="$EXTRA_CFLAGS" --extra-ldflags="$EXTRA_LDFLAGS" --extra-cxxflags="$EXTRA_CXXFLAGS" > $DEST/info.txt
  
  ./configure $FLAGS --extra-cflags="$EXTRA_CFLAGS" --extra-    ldflags="$EXTRA_LDFLAGS" --extra-cxxflags="$EXTRA_CXXFLAGS"         $ADDITIONAL_CONFIGURE_FLAG | tee $DEST/configuration.txt
  
  [ $PIPESTATUS == 0 ] || exit 1
  
  make clean
  
  echo "make -j4"
  
  make -j4 || exit 1`
  
  -------------------------------------------------------------------------------

• how does one loop a video using ffmpeg on android ?

  15 juillet 2015, par Magicomiralles

  I’m using hiteshsondhi88’s "FFmpeg Android Java" library and it works fine for scaling, trans-coding, and overlaying. However, when I try to loop a video I just get the same un-looped video on my output.

  My code :

  String internalPath = getFilesDir().getPath(); //get internal directory
  
  String command = "-y -f concat -i "+internalPath+"/myList.txt -c copy "+internalPath+"/final.mp4";
  
  ffmpeg.execute(command, ffmpegResponseHandler);

  The text in "myList.txt" is generated programmatically but it looks like this :

  file 'final_unlooped.mp4' file 'final_unlooped.mp4' file 'final_unlooped.mp4' file 'final_unlooped.mp4' file 'final_unlooped.mp4'

  Finally, the log :

  ffmpeg version n2.4.2 Copyright (c) 2000-2014 the FFmpeg developers
  
  built on Oct  7 2014 15:11:41 with gcc 4.8 (GCC)
  
  configuration: --target-os=linux --cross-prefix=/home/sb/Source-Code/ffmpeg-android/toolchain-android/bin/i686-linux-android- --arch=x86 --cpu=i686 --enable-runtime-cpudetect --sysroot=/home/sb/Source-Code/ffmpeg-android/toolchain-android/sysroot --enable-pic --enable-libx264 --enable-libass --enable-libfreetype --enable-libfribidi --enable-fontconfig --enable-pthreads --disable-debug --disable-ffserver --enable-version3 --enable-hardcoded-tables --disable-ffplay --disable-ffprobe --enable-gpl --enable-yasm --disable-doc --disable-shared --enable-static --pkg-config=/home/sb/Source-Code/ffmpeg-android/ffmpeg-pkg-config --prefix=/home/sb/Source-Code/ffmpeg-android/build/x86 --extra-cflags='-I/home/sb/Source-Code/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all -march=i686' --extra-ldflags='-L/home/sb/Source-Code/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie' --extra-libs='-lpng -lexpat -lm' --extra-cxxflags=
  
  libavutil      54.  7.100 / 54.  7.100
  
  libavcodec     56.  1.100 / 56.  1.100
  
  libavformat    56.  4.101 / 56.  4.101
  
  libavdevice    56.  0.100 / 56.  0.100
  
  libavfilter     5.  1.100 /  5.  1.100
  
  libswscale      3.  0.100 /  3.  0.100
  
  libswresample   1.  1.100 /  1.  1.100
  
  libpostproc    53.  0.100 / 53.  0.100
  
  Input #0, concat, from '/data/data/com.testApp/files/myList.txt':
  
  Duration: N/A, start: 0.000000, bitrate: 744 kb/s
  
  Stream #0:0: Video: h264 (High) (avc1 / 0x31637661), yuv420p, 640x640, 744 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc
  
  Output #0, mp4, to '/data/data/com.testApp/files/final.mp4':
  
  Metadata:
  
  encoder         : Lavf56.4.101
  
  Stream #0:0: Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 640x640, q=2-31, 744 kb/s, 25 fps, 12800 tbn, 12800 tbc
  
  Stream mapping:
  
  Stream #0:0 -> #0:0 (copy)
  
  Press [q] to stop, [?] for help
  
  frame=  115 fps=0.0 q=-1.0 Lsize=     420kB time=00:00:04.48 bitrate= 768.1kbits/s
  
  video:418kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.509634%

  The OnSuccess() method in the response handler launches indicating that the execution was successful but the output is still unlooped.

  This command works fine on Windows but for some reason it wont work on Android. any ideas of what it could be, or what am I doing wrong ?

• Compiling ffmpeg for Android using Linux

  1er juillet 2015, par VEP10

  I’d like to test the ijkplayer for android project according to this :
  https://github.com/bbcallen/ijkplayer/blob/master/README.md
  When I am compiling the ffmpeg (./compile-ffmpeg.sh) at the "configurate ffmpeg" phase I get the following message : arm-linux-androideabi-gcc is unable to create an executable file. C compiler test failed.
  This part of the compile-ffmpeg.sh file :

  echo "\n--------------------"
  
  echo "[*] configurate ffmpeg"
  
  echo "--------------------"
  
  cd $FF_SOURCE
  
  if [ -f "./config.h" ]; then
  
      echo 'reuse configure'
  
  else
  
      ./configure $FF_CFG_FLAGS \
  
          --extra-cflags="$FF_CFLAGS $FF_EXTRA_CFLAGS" \
  
          --extra-ldflags="$FF_DEP_LIBS $FF_EXTRA_LDFLAGS"
  
      make clean
  
  fi 

  At the end of the config.log file I found the problem :

  zoompan_filter_deps='swscale'
  
  WARNING: arm-linux-androideabi-pkg-config not found, library detection may fail.
  
  mktemp -u XXXXXX
  
  tHt73A
  
  check_ld cc
  
  check_cc
  
  BEGIN /tmp/ffconf.mvjZdW0f.c
  
      1   int main(void){ return 0; }
  
  END /tmp/ffconf.mvjZdW0f.c
  
  arm-linux-androideabi-gcc -O3 -Wall -pipe -std=c99 -ffast-math -fstrict aliasing -Werror=strict-aliasing -Wno-psabi -Wa,--noexecstack -DANDROID -DNDEBUG -march=armv7-a -mcpu=cortex-a8 -mfpu=vfpv3-d16 -mfloat-abi=softfp -mthumb -mcpu=cortex-a8 -c -o /tmp/ffconf.ZKAEl7Bh.o /tmp/ffconf.mvjZdW0f.c
  
  as: unrecognized option '-mcpu=cortex-a8'
  
  C compiler test failed.

  I am sure that the assembler knows the cortex-a8 cpu option. The problem is anywhere else.

  Environment :

  Ubuntu 14.04

  NDK : r10e

  arm-linux-androideabi-4.8

  gcc-4.6

  Please help !