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  • Android ffmpeg with libx264 - undefined references

    5 décembre 2015, par Krzysztof Kansy

    I’m building ffmpeg for Android with libx264 using appunite’s project under Ubuntu 15.10. I’ve build it without libx264 properly, but adding the library keep giving me undefined reference to 'x264_picture_init' and multiple other similar errors. I tried variety of possible solutions from mailing lists/other SO questions, but still nothing helps me solving the problem.

    I have removed ffmpeg/libx264/libx264-dev packages to avoid possible duplicate libraries in the system. I’ve got the libx264.a library in ffmpeg-build/ARCH/lib, where the other built libraries lives. Also I don’t think this is caused by header file not matching the library, because the only x264.h header in the system is the one used for the library building.

    Here is my build_android.sh.

    set -x
    

    
if [ "$ANDROID_NDK_HOME" = "" ]; then
    
    echo ANDROID_NDK_HOME variable not set, exiting
    
    echo "Use: export ANDROID_NDK_HOME=/your/path/to/android-ndk"
    
    exit 1
    
fi
    

    
# Get the newest arm-linux-androideabi version
    
if [ -z "$COMPILATOR_VERSION" ]; then
    
    DIRECTORIES=$ANDROID_NDK_HOME/toolchains/arm-linux-androideabi-*
    
    for i in $DIRECTORIES; do
    
        PROPOSED_NAME=${i#*$ANDROID_NDK_HOME/toolchains/arm-linux-androideabi-}
    
        if [[ $PROPOSED_NAME =~ ^[0-9\.]+$ ]] ; then
    
            echo "Available compilator version: $PROPOSED_NAME"
    
            COMPILATOR_VERSION=$PROPOSED_NAME
    
        fi
    
    done
    
fi
    

    
if [ -z "$COMPILATOR_VERSION" ]; then
    
    echo "Could not find compilator"
    
    exit 1
    
fi
    

    
if [ ! -d $ANDROID_NDK_HOME/toolchains/arm-linux-androideabi-$COMPILATOR_VERSION ]; then
    
    echo $ANDROID_NDK_HOME/toolchains/arm-linux-androideabi-$COMPILATOR_VERSION does not exist
    
    exit 1
    
fi
    
echo "Using compilator version: $COMPILATOR_VERSION"
    

    
OS_ARCH=`basename $ANDROID_NDK_HOME/toolchains/arm-linux-androideabi-$COMPILATOR_VERSION/prebuilt/*`
    
echo "Using architecture: $OS_ARCH"
    

    

    
function setup_paths
    
{
    
    export PLATFORM=$ANDROID_NDK_HOME/platforms/$PLATFORM_VERSION/arch-$ARCH/
    
    if [ ! -d $PLATFORM ]; then
    
        echo $PLATFORM does not exist
    
        exit 1
    
    fi
    
    echo "Using platform: $PLATFORM"
    
    export PATH=${PATH}:$PREBUILT/bin/
    
    export CROSS_COMPILE=$PREBUILT/bin/$EABIARCH-
    
    export CFLAGS=$OPTIMIZE_CFLAGS
    
    export CPPFLAGS="$CFLAGS"
    
    export CFLAGS="$CFLAGS"
    
    export CXXFLAGS="$CFLAGS"
    
    export CXX="${CROSS_COMPILE}g++ --sysroot=$PLATFORM"
    
    export AS="${CROSS_COMPILE}gcc --sysroot=$PLATFORM"
    
    export CC="${CROSS_COMPILE}gcc --sysroot=$PLATFORM"
    
    export PKG_CONFIG="${CROSS_COMPILE}pkg-config"
    
    export LD="${CROSS_COMPILE}ld"
    
    export NM="${CROSS_COMPILE}nm"
    
    export STRIP="${CROSS_COMPILE}strip"
    
    export RANLIB="${CROSS_COMPILE}ranlib"
    
    export AR="${CROSS_COMPILE}ar"
    
    export LDFLAGS="-Wl,-rpath-link=$PLATFORM/usr/lib -L$PLATFORM/usr/lib -nostdlib -lc -lm -ldl -llog"
    
    export PKG_CONFIG_LIBDIR=$PREFIX/lib/pkgconfig/
    
    export PKG_CONFIG_PATH=$PREFIX/lib/pkgconfig/
    

    
    if [ ! -f "${CROSS_COMPILE}gcc" ]; then
    
        echo "Gcc does not exists in path: ${CROSS_COMPILE}gcc"
    
        exit 1;
    
    fi
    

    
    if [ ! -f "${PKG_CONFIG}" ]; then
    
        echo "Pkg config does not exists in path: ${PKG_CONFIG} - Probably BUG in NDK but..."
    
        set +e
    
        SYS_PKG_CONFIG=$(which pkg-config)
    
        if [ "$?" -ne 0 ]; then
    
            echo "This system does not contain system pkg-config, so we can do anything"
    
            exit 1
    
        fi
    
        set -e
    
        cat > $PKG_CONFIG << EOF
    
#!/bin/bash
    
pkg-config \$*
    
EOF
    
        chmod u+x $PKG_CONFIG
    
        echo "Because we have local pkg-config we will create it in ${PKG_CONFIG} directory using ${SYS_PKG_CONFIG}"
    
    fi
    
}
    

    
function build_x264
    
{
    
    echo "Starting build x264 for $ARCH"
    
    cd x264
    
    ./configure --prefix=$PREFIX --host=$ARCH-linux --enable-static --disable-shared --enable-pic --disable-cli $ADDITIONAL_CONFIGURE_FLAG
    

    
    make clean
    
    make -j4 install
    
    make clean
    
    cd ..
    
    echo "FINISHED x264 for $ARCH"
    
}
    

    
function build_amr
    
{
    
    echo "Starting build amr for $ARCH"
    
    cd vo-amrwbenc
    
    ./configure \
    
        --prefix=$PREFIX \
    
        --host=$ARCH-linux \
    
        --disable-dependency-tracking \
    
        --disable-shared \
    
        --enable-static \
    
        --with-pic \
    
        $ADDITIONAL_CONFIGURE_FLAG
    

    
    make clean
    
    make -j4 install
    
    make clean
    
    cd ..
    
    echo "FINISHED amr for $ARCH"
    
}
    

    
function build_aac
    
{
    
    echo "Starting build aac for $ARCH"
    
    cd vo-aacenc
    
    ./configure \
    
        --prefix=$PREFIX \
    
        --host=$ARCH-linux \
    
        --disable-dependency-tracking \
    
        --disable-shared \
    
        --enable-static \
    
        --with-pic \
    
        $ADDITIONAL_CONFIGURE_FLAG
    

    
    make clean
    
    make -j4 install
    
    make clean
    
    cd ..
    
    echo "FINISHED aac for $ARCH"
    
}
    
function build_freetype2
    
{
    
    echo "Starting build freetype2 for $ARCH"
    
    cd freetype2
    
    ./configure \
    
        --prefix=$PREFIX \
    
        --host=$ARCH-linux \
    
        --disable-dependency-tracking \
    
        --disable-shared \
    
        --enable-static \
    
        --with-pic \
    
        $ADDITIONAL_CONFIGURE_FLAG
    

    
    make clean
    
    make -j4 install
    
    make clean
    
    cd ..
    
    echo "FINISHED freetype2 for $ARCH"
    
}
    

    
function build_ass
    
{
    
    echo "Starting build ass for $ARCH"
    
    cd libass
    
    ./configure \
    
        --prefix=$PREFIX \
    
        --host=$ARCH-linux \
    
        --disable-fontconfig \
    
        --disable-dependency-tracking \
    
        --disable-shared \
    
        --enable-static \
    
        --with-pic \
    
        $ADDITIONAL_CONFIGURE_FLAG
    

    
    make clean
    
    make V=1 -j4 install
    
    make clean
    
    cd ..
    
    echo "FINISHED ass for $ARCH"
    
}
    
function build_fribidi
    
{
    
    echo "Starting build fribidi for $ARCH"
    
    cd fribidi
    
    ./configure \
    
        --prefix=$PREFIX \
    
        --host=$ARCH-linux \
    
        --disable-bin \
    
        --disable-dependency-tracking \
    
        --disable-shared \
    
        --enable-static \
    
        --with-pic \
    
        $ADDITIONAL_CONFIGURE_FLAG
    

    
    make clean
    
    make -j4 install
    
    make clean
    
    cd ..
    
    echo "FINISHED fribidi for $ARCH"
    
}
    
function build_ffmpeg
    
{
    
    echo "Starting build ffmpeg for $ARCH"
    
    cd ffmpeg
    
    ./configure --target-os=linux \
    
        --prefix=$PREFIX \
    
        --enable-cross-compile \
    
        --extra-libs="-lgcc -L$PREFIX/lib/libx264.a" \
    
        --arch=$ARCH \
    
        --cc=$CC \
    
        --cross-prefix=$CROSS_COMPILE \
    
        --nm=$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 \
    
        --enable-runtime-cpudetect \
    
        --pkg-config-flags="--static" \
    
        --extra-ldflags="-Wl,-rpath-link=$PLATFORM/usr/lib -L$PLATFORM/usr/lib  -nostdlib -lc -lm -ldl -llog -L$PREFIX/lib" \
    
        --extra-cflags="-I$PREFIX/include" \
    
        --disable-everything \
    
        --enable-gpl \
    
        --enable-pthreads \
    
        --enable-libass \
    
        --enable-libvo-aacenc \
    
        --enable-libvo-amrwbenc \
    
        --enable-hwaccel=h264_vaapi \
    
        --enable-hwaccel=h264_vaapi \
    
        --enable-hwaccel=h264_dxva2 \
    
        --enable-hwaccel=mpeg4_vaapi \
    
        --enable-libx264 \
    
        --enable-demuxer=mov \
    
        --enable-demuxer=h264 \
    
        --enable-muxer=h264 \
    
        --enable-demuxer=mpegvideo \
    
        --enable-demuxer=h263 \
    
        --enable-demuxer=mpegps \
    
        --enable-demuxer=mjpeg \
    
        --enable-demuxer=rtsp \
    
        --enable-demuxer=rtp \
    
        --enable-demuxer=hls \
    
        --enable-demuxer=matroska \
    
        --enable-muxer=rtsp \
    
        --enable-muxer=mp4 \
    
        --enable-muxer=mov \
    
        --enable-muxer=mjpeg \
    
        --enable-muxer=matroska \
    
        --enable-protocol=crypto \
    
        --enable-protocol=jni \
    
        --enable-protocol=file \
    
        --enable-protocol=rtp \
    
        --enable-protocol=tcp \
    
        --enable-protocol=udp \
    
        --enable-protocol=applehttp \
    
        --enable-protocol=hls \
    
        --enable-protocol=http \
    
        --enable-decoder=xsub \
    
        --enable-decoder=jacosub \
    
        --enable-decoder=dvdsub \
    
        --enable-decoder=dvbsub \
    
        --enable-decoder=subviewer \
    
        --enable-decoder=rawvideo \
    
        --enable-encoder=rawvideo \
    
        --enable-decoder=mjpeg \
    
        --enable-encoder=mjpeg \
    
        --enable-decoder=h263 \
    
        --enable-decoder=mpeg4 \
    
        --enable-encoder=mpeg4 \
    
        --enable-decoder=h264 \
    
        --enable-encoder=h264 \
    
        --enable-decoder=aac \
    
        --enable-encoder=aac \
    
        --enable-parser=h264 \
    
        --enable-encoder=mp2 \
    
        --enable-decoder=mp2 \
    
        --enable-encoder=libvo_amrwbenc \
    
        --enable-decoder=amrwb \
    
        --enable-muxer=mp2 \
    
        --enable-bsfs \
    
        --enable-decoders \
    
        --enable-encoders \
    
        --enable-parsers \
    
        --enable-hwaccels \
    
        --enable-muxers \
    
        --enable-avformat \
    
        --enable-avcodec \
    
        --enable-avresample \
    
        --enable-zlib \
    
        --disable-doc \
    
        --disable-ffplay \
    
        --disable-ffmpeg \
    
        --disable-ffplay \
    
        --disable-ffprobe \
    
        --disable-ffserver \
    
        --enable-avfilter \
    
        --disable-avdevice \
    
        --disable-opencl \
    
        --enable-nonfree \
    
        --enable-version3 \
    
        --enable-memalign-hack \
    
        --enable-asm \
    
        $ADDITIONAL_CONFIGURE_FLAG
    
    make clean
    
    make -j4 install
    
    make clean
    

    
    cd ..
    
    echo "FINISHED ffmpeg for $ARCH"
    
}
    

    
function build_one {
    
    echo "Starting build one for $ARCH"
    
    cd ffmpeg
    
    ${LD} -rpath-link=$PLATFORM/usr/lib -L$PLATFORM/usr/lib -L$PREFIX/lib  -soname $SONAME -shared -nostdlib -Bsymbolic --whole-archive --no-undefined -o $OUT_LIBRARY -lavformat -lavcodec -lavresample -lavutil -lswresample -lavfilter -lass -lfreetype -lfribidi -lswscale -lvo-aacenc -lvo-amrwbenc -lc -lm -lz -ldl -llog --dynamic-linker=/system/bin/linker -zmuldefs $PREBUILT/lib/gcc/$EABIARCH/$COMPILATOR_VERSION/libgcc.a
    
    cd ..
    
    echo "FINISHED one for $ARCH"
    
}
    

    
# enable additional architectures later on
    

    
#arm v5
    
#EABIARCH=arm-linux-androideabi
    
#ARCH=arm
    
#CPU=armv5
    
#OPTIMIZE_CFLAGS="-marm -march=$CPU"
    
#PREFIX=$(pwd)/ffmpeg-build/armeabi
    
#OUT_LIBRARY=$PREFIX/libffmpeg.so
    
#ADDITIONAL_CONFIGURE_FLAG=
    
#SONAME=libffmpeg.so
    
#PREBUILT=$ANDROID_NDK_HOME/toolchains/arm-linux-androideabi-$COMPILATOR_VERSION/prebuilt/$OS_ARCH
    
#PLATFORM_VERSION=android-5
    
#setup_paths
    
#build_amr
    
#build_aac
    
#build_fribidi
    
#build_freetype2
    
#build_ass
    
#build_ffmpeg
    
#build_one
    

    
#x86
    
#EABIARCH=i686-linux-android
    
#ARCH=x86
    
#OPTIMIZE_CFLAGS="-m32"
    
#PREFIX=$(pwd)/ffmpeg-build/x86
    
#OUT_LIBRARY=$PREFIX/libffmpeg.so
    
#ADDITIONAL_CONFIGURE_FLAG=--disable-asm
    
#SONAME=libffmpeg.so
    
#PREBUILT=$ANDROID_NDK_HOME/toolchains/x86-$COMPILATOR_VERSION/prebuilt/$OS_ARCH
    
#PLATFORM_VERSION=android-9
    
#setup_paths
    
#build_amr
    
#build_aac
    
#build_fribidi
    
#build_freetype2
    
#build_ass
    
#build_ffmpeg
    
#build_one
    

    
#mips
    
#EABIARCH=mipsel-linux-android
    
#ARCH=mips
    
#OPTIMIZE_CFLAGS="-EL -march=mips32 -mips32 -mhard-float"
    
#PREFIX=$(pwd)/ffmpeg-build/mips
    
#OUT_LIBRARY=$PREFIX/libffmpeg.so
    
#ADDITIONAL_CONFIGURE_FLAG="--disable-mips32r2"
    
#SONAME=libffmpeg.so
    
#PREBUILT=$ANDROID_NDK_HOME/toolchains/mipsel-linux-android-$COMPILATOR_VERSION/prebuilt/$OS_ARCH
    
#PLATFORM_VERSION=android-9
    
#setup_paths
    
#build_amr
    
#build_aac
    
#build_fribidi
    
#build_freetype2
    
#build_ass
    
#build_ffmpeg
    
#build_one
    

    
#arm v7vfpv3
    
EABIARCH=arm-linux-androideabi
    
ARCH=arm
    
CPU=armv7-a
    
OPTIMIZE_CFLAGS="-mfloat-abi=softfp -mfpu=vfpv3-d16 -marm -march=$CPU "
    
PREFIX=$(pwd)/ffmpeg-build/armeabi-v7a
    
OUT_LIBRARY=$PREFIX/libffmpeg.so
    
ADDITIONAL_CONFIGURE_FLAG=
    
SONAME=libffmpeg.so
    
PREBUILT=$ANDROID_NDK_HOME/toolchains/arm-linux-androideabi-$COMPILATOR_VERSION/prebuilt/$OS_ARCH
    
PLATFORM_VERSION=android-5
    
setup_paths
    
build_x264
    
build_amr
    
build_aac
    
build_fribidi
    
build_freetype2
    
build_ass
    
build_ffmpeg
    
build_one
    

    
#arm v7 + neon (neon also include vfpv3-32)
    
EABIARCH=arm-linux-androideabi
    
ARCH=arm
    
CPU=armv7-a
    
OPTIMIZE_CFLAGS="-mfloat-abi=softfp -mfpu=neon -marm -march=$CPU -mtune=cortex-a8 -mthumb -D__thumb__ "
    
PREFIX=$(pwd)/ffmpeg-build/armeabi-v7a-neon
    
OUT_LIBRARY=../ffmpeg-build/armeabi-v7a/libffmpeg-neon.so
    
ADDITIONAL_CONFIGURE_FLAG=--enable-neon
    
SONAME=libffmpeg-neon.so
    
PREBUILT=$ANDROID_NDK_HOME/toolchains/arm-linux-androideabi-$COMPILATOR_VERSION/prebuilt/$OS_ARCH
    
PLATFORM_VERSION=android-9
    
setup_paths
    
build_x264
    
build_amr
    
build_aac
    
build_fribidi
    
build_freetype2
    
build_ass
    
build_ffmpeg
    
build_one
    

    

    
echo "BUILD SUCCESS"

    I’ve disabled the non-arm architectures for the time being. If there is any other information I can provide to help finding the problem, I will be happy to do so.

    I’m wondering if the issue may be caused by something missing in the script, namely in build_one part, tho I tried to indicate the libx264.a directly in —extra-ldflags, without success.

  • Android ffmpeg with libx264 - undefined references

    5 décembre 2015, par Krzysztof Kansy

    I’m building ffmpeg for Android with libx264 using appunite’s project under Ubuntu 15.10. I’ve build it without libx264 properly, but adding the library keep giving me undefined reference to 'x264_picture_init' and multiple other similar errors. I tried variety of possible solutions from mailing lists/other SO questions, but still nothing helps me solving the problem.

    I have removed ffmpeg/libx264/libx264-dev packages to avoid possible duplicate libraries in the system. I’ve got the libx264.a library in ffmpeg-build/ARCH/lib, where the other built libraries lives. Also I don’t think this is caused by header file not matching the library, because the only x264.h header in the system is the one used for the library building.

    Here is my build_android.sh.

    set -x
    

    
if [ "$ANDROID_NDK_HOME" = "" ]; then
    
    echo ANDROID_NDK_HOME variable not set, exiting
    
    echo "Use: export ANDROID_NDK_HOME=/your/path/to/android-ndk"
    
    exit 1
    
fi
    

    
# Get the newest arm-linux-androideabi version
    
if [ -z "$COMPILATOR_VERSION" ]; then
    
    DIRECTORIES=$ANDROID_NDK_HOME/toolchains/arm-linux-androideabi-*
    
    for i in $DIRECTORIES; do
    
        PROPOSED_NAME=${i#*$ANDROID_NDK_HOME/toolchains/arm-linux-androideabi-}
    
        if [[ $PROPOSED_NAME =~ ^[0-9\.]+$ ]] ; then
    
            echo "Available compilator version: $PROPOSED_NAME"
    
            COMPILATOR_VERSION=$PROPOSED_NAME
    
        fi
    
    done
    
fi
    

    
if [ -z "$COMPILATOR_VERSION" ]; then
    
    echo "Could not find compilator"
    
    exit 1
    
fi
    

    
if [ ! -d $ANDROID_NDK_HOME/toolchains/arm-linux-androideabi-$COMPILATOR_VERSION ]; then
    
    echo $ANDROID_NDK_HOME/toolchains/arm-linux-androideabi-$COMPILATOR_VERSION does not exist
    
    exit 1
    
fi
    
echo "Using compilator version: $COMPILATOR_VERSION"
    

    
OS_ARCH=`basename $ANDROID_NDK_HOME/toolchains/arm-linux-androideabi-$COMPILATOR_VERSION/prebuilt/*`
    
echo "Using architecture: $OS_ARCH"
    

    

    
function setup_paths
    
{
    
    export PLATFORM=$ANDROID_NDK_HOME/platforms/$PLATFORM_VERSION/arch-$ARCH/
    
    if [ ! -d $PLATFORM ]; then
    
        echo $PLATFORM does not exist
    
        exit 1
    
    fi
    
    echo "Using platform: $PLATFORM"
    
    export PATH=${PATH}:$PREBUILT/bin/
    
    export CROSS_COMPILE=$PREBUILT/bin/$EABIARCH-
    
    export CFLAGS=$OPTIMIZE_CFLAGS
    
    export CPPFLAGS="$CFLAGS"
    
    export CFLAGS="$CFLAGS"
    
    export CXXFLAGS="$CFLAGS"
    
    export CXX="${CROSS_COMPILE}g++ --sysroot=$PLATFORM"
    
    export AS="${CROSS_COMPILE}gcc --sysroot=$PLATFORM"
    
    export CC="${CROSS_COMPILE}gcc --sysroot=$PLATFORM"
    
    export PKG_CONFIG="${CROSS_COMPILE}pkg-config"
    
    export LD="${CROSS_COMPILE}ld"
    
    export NM="${CROSS_COMPILE}nm"
    
    export STRIP="${CROSS_COMPILE}strip"
    
    export RANLIB="${CROSS_COMPILE}ranlib"
    
    export AR="${CROSS_COMPILE}ar"
    
    export LDFLAGS="-Wl,-rpath-link=$PLATFORM/usr/lib -L$PLATFORM/usr/lib -nostdlib -lc -lm -ldl -llog"
    
    export PKG_CONFIG_LIBDIR=$PREFIX/lib/pkgconfig/
    
    export PKG_CONFIG_PATH=$PREFIX/lib/pkgconfig/
    

    
    if [ ! -f "${CROSS_COMPILE}gcc" ]; then
    
        echo "Gcc does not exists in path: ${CROSS_COMPILE}gcc"
    
        exit 1;
    
    fi
    

    
    if [ ! -f "${PKG_CONFIG}" ]; then
    
        echo "Pkg config does not exists in path: ${PKG_CONFIG} - Probably BUG in NDK but..."
    
        set +e
    
        SYS_PKG_CONFIG=$(which pkg-config)
    
        if [ "$?" -ne 0 ]; then
    
            echo "This system does not contain system pkg-config, so we can do anything"
    
            exit 1
    
        fi
    
        set -e
    
        cat > $PKG_CONFIG << EOF
    
#!/bin/bash
    
pkg-config \$*
    
EOF
    
        chmod u+x $PKG_CONFIG
    
        echo "Because we have local pkg-config we will create it in ${PKG_CONFIG} directory using ${SYS_PKG_CONFIG}"
    
    fi
    
}
    

    
function build_x264
    
{
    
    echo "Starting build x264 for $ARCH"
    
    cd x264
    
    ./configure --prefix=$PREFIX --host=$ARCH-linux --enable-static --disable-shared --enable-pic --disable-cli $ADDITIONAL_CONFIGURE_FLAG
    

    
    make clean
    
    make -j4 install
    
    make clean
    
    cd ..
    
    echo "FINISHED x264 for $ARCH"
    
}
    

    
function build_amr
    
{
    
    echo "Starting build amr for $ARCH"
    
    cd vo-amrwbenc
    
    ./configure \
    
        --prefix=$PREFIX \
    
        --host=$ARCH-linux \
    
        --disable-dependency-tracking \
    
        --disable-shared \
    
        --enable-static \
    
        --with-pic \
    
        $ADDITIONAL_CONFIGURE_FLAG
    

    
    make clean
    
    make -j4 install
    
    make clean
    
    cd ..
    
    echo "FINISHED amr for $ARCH"
    
}
    

    
function build_aac
    
{
    
    echo "Starting build aac for $ARCH"
    
    cd vo-aacenc
    
    ./configure \
    
        --prefix=$PREFIX \
    
        --host=$ARCH-linux \
    
        --disable-dependency-tracking \
    
        --disable-shared \
    
        --enable-static \
    
        --with-pic \
    
        $ADDITIONAL_CONFIGURE_FLAG
    

    
    make clean
    
    make -j4 install
    
    make clean
    
    cd ..
    
    echo "FINISHED aac for $ARCH"
    
}
    
function build_freetype2
    
{
    
    echo "Starting build freetype2 for $ARCH"
    
    cd freetype2
    
    ./configure \
    
        --prefix=$PREFIX \
    
        --host=$ARCH-linux \
    
        --disable-dependency-tracking \
    
        --disable-shared \
    
        --enable-static \
    
        --with-pic \
    
        $ADDITIONAL_CONFIGURE_FLAG
    

    
    make clean
    
    make -j4 install
    
    make clean
    
    cd ..
    
    echo "FINISHED freetype2 for $ARCH"
    
}
    

    
function build_ass
    
{
    
    echo "Starting build ass for $ARCH"
    
    cd libass
    
    ./configure \
    
        --prefix=$PREFIX \
    
        --host=$ARCH-linux \
    
        --disable-fontconfig \
    
        --disable-dependency-tracking \
    
        --disable-shared \
    
        --enable-static \
    
        --with-pic \
    
        $ADDITIONAL_CONFIGURE_FLAG
    

    
    make clean
    
    make V=1 -j4 install
    
    make clean
    
    cd ..
    
    echo "FINISHED ass for $ARCH"
    
}
    
function build_fribidi
    
{
    
    echo "Starting build fribidi for $ARCH"
    
    cd fribidi
    
    ./configure \
    
        --prefix=$PREFIX \
    
        --host=$ARCH-linux \
    
        --disable-bin \
    
        --disable-dependency-tracking \
    
        --disable-shared \
    
        --enable-static \
    
        --with-pic \
    
        $ADDITIONAL_CONFIGURE_FLAG
    

    
    make clean
    
    make -j4 install
    
    make clean
    
    cd ..
    
    echo "FINISHED fribidi for $ARCH"
    
}
    
function build_ffmpeg
    
{
    
    echo "Starting build ffmpeg for $ARCH"
    
    cd ffmpeg
    
    ./configure --target-os=linux \
    
        --prefix=$PREFIX \
    
        --enable-cross-compile \
    
        --extra-libs="-lgcc -L$PREFIX/lib/libx264.a" \
    
        --arch=$ARCH \
    
        --cc=$CC \
    
        --cross-prefix=$CROSS_COMPILE \
    
        --nm=$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 \
    
        --enable-runtime-cpudetect \
    
        --pkg-config-flags="--static" \
    
        --extra-ldflags="-Wl,-rpath-link=$PLATFORM/usr/lib -L$PLATFORM/usr/lib  -nostdlib -lc -lm -ldl -llog -L$PREFIX/lib" \
    
        --extra-cflags="-I$PREFIX/include" \
    
        --disable-everything \
    
        --enable-gpl \
    
        --enable-pthreads \
    
        --enable-libass \
    
        --enable-libvo-aacenc \
    
        --enable-libvo-amrwbenc \
    
        --enable-hwaccel=h264_vaapi \
    
        --enable-hwaccel=h264_vaapi \
    
        --enable-hwaccel=h264_dxva2 \
    
        --enable-hwaccel=mpeg4_vaapi \
    
        --enable-libx264 \
    
        --enable-demuxer=mov \
    
        --enable-demuxer=h264 \
    
        --enable-muxer=h264 \
    
        --enable-demuxer=mpegvideo \
    
        --enable-demuxer=h263 \
    
        --enable-demuxer=mpegps \
    
        --enable-demuxer=mjpeg \
    
        --enable-demuxer=rtsp \
    
        --enable-demuxer=rtp \
    
        --enable-demuxer=hls \
    
        --enable-demuxer=matroska \
    
        --enable-muxer=rtsp \
    
        --enable-muxer=mp4 \
    
        --enable-muxer=mov \
    
        --enable-muxer=mjpeg \
    
        --enable-muxer=matroska \
    
        --enable-protocol=crypto \
    
        --enable-protocol=jni \
    
        --enable-protocol=file \
    
        --enable-protocol=rtp \
    
        --enable-protocol=tcp \
    
        --enable-protocol=udp \
    
        --enable-protocol=applehttp \
    
        --enable-protocol=hls \
    
        --enable-protocol=http \
    
        --enable-decoder=xsub \
    
        --enable-decoder=jacosub \
    
        --enable-decoder=dvdsub \
    
        --enable-decoder=dvbsub \
    
        --enable-decoder=subviewer \
    
        --enable-decoder=rawvideo \
    
        --enable-encoder=rawvideo \
    
        --enable-decoder=mjpeg \
    
        --enable-encoder=mjpeg \
    
        --enable-decoder=h263 \
    
        --enable-decoder=mpeg4 \
    
        --enable-encoder=mpeg4 \
    
        --enable-decoder=h264 \
    
        --enable-encoder=h264 \
    
        --enable-decoder=aac \
    
        --enable-encoder=aac \
    
        --enable-parser=h264 \
    
        --enable-encoder=mp2 \
    
        --enable-decoder=mp2 \
    
        --enable-encoder=libvo_amrwbenc \
    
        --enable-decoder=amrwb \
    
        --enable-muxer=mp2 \
    
        --enable-bsfs \
    
        --enable-decoders \
    
        --enable-encoders \
    
        --enable-parsers \
    
        --enable-hwaccels \
    
        --enable-muxers \
    
        --enable-avformat \
    
        --enable-avcodec \
    
        --enable-avresample \
    
        --enable-zlib \
    
        --disable-doc \
    
        --disable-ffplay \
    
        --disable-ffmpeg \
    
        --disable-ffplay \
    
        --disable-ffprobe \
    
        --disable-ffserver \
    
        --enable-avfilter \
    
        --disable-avdevice \
    
        --disable-opencl \
    
        --enable-nonfree \
    
        --enable-version3 \
    
        --enable-memalign-hack \
    
        --enable-asm \
    
        $ADDITIONAL_CONFIGURE_FLAG
    
    make clean
    
    make -j4 install
    
    make clean
    

    
    cd ..
    
    echo "FINISHED ffmpeg for $ARCH"
    
}
    

    
function build_one {
    
    echo "Starting build one for $ARCH"
    
    cd ffmpeg
    
    ${LD} -rpath-link=$PLATFORM/usr/lib -L$PLATFORM/usr/lib -L$PREFIX/lib  -soname $SONAME -shared -nostdlib -Bsymbolic --whole-archive --no-undefined -o $OUT_LIBRARY -lavformat -lavcodec -lavresample -lavutil -lswresample -lavfilter -lass -lfreetype -lfribidi -lswscale -lvo-aacenc -lvo-amrwbenc -lc -lm -lz -ldl -llog --dynamic-linker=/system/bin/linker -zmuldefs $PREBUILT/lib/gcc/$EABIARCH/$COMPILATOR_VERSION/libgcc.a
    
    cd ..
    
    echo "FINISHED one for $ARCH"
    
}
    

    
# enable additional architectures later on
    

    
#arm v5
    
#EABIARCH=arm-linux-androideabi
    
#ARCH=arm
    
#CPU=armv5
    
#OPTIMIZE_CFLAGS="-marm -march=$CPU"
    
#PREFIX=$(pwd)/ffmpeg-build/armeabi
    
#OUT_LIBRARY=$PREFIX/libffmpeg.so
    
#ADDITIONAL_CONFIGURE_FLAG=
    
#SONAME=libffmpeg.so
    
#PREBUILT=$ANDROID_NDK_HOME/toolchains/arm-linux-androideabi-$COMPILATOR_VERSION/prebuilt/$OS_ARCH
    
#PLATFORM_VERSION=android-5
    
#setup_paths
    
#build_amr
    
#build_aac
    
#build_fribidi
    
#build_freetype2
    
#build_ass
    
#build_ffmpeg
    
#build_one
    

    
#x86
    
#EABIARCH=i686-linux-android
    
#ARCH=x86
    
#OPTIMIZE_CFLAGS="-m32"
    
#PREFIX=$(pwd)/ffmpeg-build/x86
    
#OUT_LIBRARY=$PREFIX/libffmpeg.so
    
#ADDITIONAL_CONFIGURE_FLAG=--disable-asm
    
#SONAME=libffmpeg.so
    
#PREBUILT=$ANDROID_NDK_HOME/toolchains/x86-$COMPILATOR_VERSION/prebuilt/$OS_ARCH
    
#PLATFORM_VERSION=android-9
    
#setup_paths
    
#build_amr
    
#build_aac
    
#build_fribidi
    
#build_freetype2
    
#build_ass
    
#build_ffmpeg
    
#build_one
    

    
#mips
    
#EABIARCH=mipsel-linux-android
    
#ARCH=mips
    
#OPTIMIZE_CFLAGS="-EL -march=mips32 -mips32 -mhard-float"
    
#PREFIX=$(pwd)/ffmpeg-build/mips
    
#OUT_LIBRARY=$PREFIX/libffmpeg.so
    
#ADDITIONAL_CONFIGURE_FLAG="--disable-mips32r2"
    
#SONAME=libffmpeg.so
    
#PREBUILT=$ANDROID_NDK_HOME/toolchains/mipsel-linux-android-$COMPILATOR_VERSION/prebuilt/$OS_ARCH
    
#PLATFORM_VERSION=android-9
    
#setup_paths
    
#build_amr
    
#build_aac
    
#build_fribidi
    
#build_freetype2
    
#build_ass
    
#build_ffmpeg
    
#build_one
    

    
#arm v7vfpv3
    
EABIARCH=arm-linux-androideabi
    
ARCH=arm
    
CPU=armv7-a
    
OPTIMIZE_CFLAGS="-mfloat-abi=softfp -mfpu=vfpv3-d16 -marm -march=$CPU "
    
PREFIX=$(pwd)/ffmpeg-build/armeabi-v7a
    
OUT_LIBRARY=$PREFIX/libffmpeg.so
    
ADDITIONAL_CONFIGURE_FLAG=
    
SONAME=libffmpeg.so
    
PREBUILT=$ANDROID_NDK_HOME/toolchains/arm-linux-androideabi-$COMPILATOR_VERSION/prebuilt/$OS_ARCH
    
PLATFORM_VERSION=android-5
    
setup_paths
    
build_x264
    
build_amr
    
build_aac
    
build_fribidi
    
build_freetype2
    
build_ass
    
build_ffmpeg
    
build_one
    

    
#arm v7 + neon (neon also include vfpv3-32)
    
EABIARCH=arm-linux-androideabi
    
ARCH=arm
    
CPU=armv7-a
    
OPTIMIZE_CFLAGS="-mfloat-abi=softfp -mfpu=neon -marm -march=$CPU -mtune=cortex-a8 -mthumb -D__thumb__ "
    
PREFIX=$(pwd)/ffmpeg-build/armeabi-v7a-neon
    
OUT_LIBRARY=../ffmpeg-build/armeabi-v7a/libffmpeg-neon.so
    
ADDITIONAL_CONFIGURE_FLAG=--enable-neon
    
SONAME=libffmpeg-neon.so
    
PREBUILT=$ANDROID_NDK_HOME/toolchains/arm-linux-androideabi-$COMPILATOR_VERSION/prebuilt/$OS_ARCH
    
PLATFORM_VERSION=android-9
    
setup_paths
    
build_x264
    
build_amr
    
build_aac
    
build_fribidi
    
build_freetype2
    
build_ass
    
build_ffmpeg
    
build_one
    

    

    
echo "BUILD SUCCESS"

    I’ve disabled the non-arm architectures for the time being. If there is any other information I can provide to help finding the problem, I will be happy to do so.

    I’m wondering if the issue may be caused by something missing in the script, namely in build_one part, tho I tried to indicate the libx264.a directly in —extra-ldflags, without success.

  • How to update MP4 with the video length

    9 décembre 2015, par oygle

    I used youtube-dl to obtain a friends video. When I play it in VLC, I notice there is no time/length shown. As we need to cut part of this video with ffmpeg, can I use ffmpeg (or similar tool) to determine the length of the video, and then update the MP4 to contain the time/length ?

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