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  • SIGSEV when loading ffmpeg library

    20 février 2014, par gookman

    I am trying to build ffmpeg for Android similar to AndroidFFmpeg.

    I have configured ffmpeg so that I have only what I need. My android_build.sh looks like
    this :

    #!/bin/bash
    

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

    
OS=`uname -s | tr '[A-Z]' '[a-z]'`
    
function build_ffmpeg
    
{
    
    PLATFORM=$NDK/platforms/$PLATFORM_VERSION/arch-$ARCH/
    
    CC=$PREBUILT/bin/$EABIARCH-gcc
    
    CROSS_PREFIX=$PREBUILT/bin/$EABIARCH-
    
    PKG_CONFIG=${CROSS_PREFIX}pkg-config
    
    if [ ! -f $PKG_CONFIG ];
    
    then
    
       cat > $PKG_CONFIG << EOF
    
#!/bin/bash
    
pkg-config \$*
    
EOF
    
       chmod u+x $PKG_CONFIG
    
    fi
    
    NM=$PREBUILT/bin/$EABIARCH-nm
    
    cd ffmpeg
    
    export PKG_CONFIG_LIBDIR=$(pwd)/$PREFIX/lib/pkgconfig/
    
    export PKG_CONFIG_PATH=$(pwd)/$PREFIX/lib/pkgconfig/
    
    ./configure --target-os=linux \
    
        --prefix=$PREFIX \
    
        --enable-small \
    
        --enable-cross-compile \
    
        --extra-libs="-lgcc" \
    
        --arch=$ARCH \
    
        --cc=$CC \
    
        --cross-prefix=$CROSS_PREFIX \
    
        --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 \
    
        --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-muxer=mp4 \
    
        --enable-protocol=file \
    
        --enable-decoder=mpeg4 \
    
        --enable-encoder=mpeg4 \
    
        --enable-avformat \
    
        --enable-avcodec \
    
        --enable-avresample \
    
        --enable-zlib \
    
        --disable-doc \
    
        --disable-ffplay \
    
        --disable-ffmpeg \
    
        --disable-ffplay \
    
        --disable-ffprobe \
    
        --disable-ffserver \
    
        --disable-avdevice \
    
        --enable-nonfree \
    
        --enable-version3 \
    
        --enable-memalign-hack \
    
        --enable-asm \
    
        $ADDITIONAL_CONFIGURE_FLAG \
    
        || exit 1
    
    make clean || exit 1
    
    make -j4 install || exit 1
    

    
    cd ..
    
}
    

    
function build_one {
    
    cd ffmpeg
    
    PLATFORM=$NDK/platforms/$PLATFORM_VERSION/arch-$ARCH/
    
    $PREBUILT/bin/$EABIARCH-ld -rpath-link=$PLATFORM/usr/lib -L$PLATFORM/usr/lib -L$PREFIX/lib  -soname $SONAME -shared -nostdlib  -z noexecstack -Bsymbolic --whole-archive --no-undefined -o $OUT_LIBRARY -lavcodec -lavformat -lavresample -lavutil -lc -lm -lz -ldl -llog --dynamic-linker=/system/bin/linker -zmuldefs $PREBUILT/lib/gcc/$EABIARCH/4.6/libgcc.a || exit 1
    
   cd ..
    
}
    

    
#arm v5
    
EABIARCH=arm-linux-androideabi
    
ARCH=arm
    
CPU=armv5
    
OPTIMIZE_CFLAGS="-marm -march=$CPU"
    
PREFIX=../ffmpeg-build/armeabi
    
OUT_LIBRARY=$PREFIX/libffmpeg.so
    
ADDITIONAL_CONFIGURE_FLAG=
    
SONAME=libffmpeg.so
    
PREBUILT=$NDK/toolchains/arm-linux-androideabi-4.6/prebuilt/$OS-x86_64
    
PLATFORM_VERSION=android-5
    
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=../ffmpeg-build/armeabi-v7a
    
OUT_LIBRARY=$PREFIX/libffmpeg.so
    
ADDITIONAL_CONFIGURE_FLAG=
    
SONAME=libffmpeg.so
    
PREBUILT=$NDK/toolchains/arm-linux-androideabi-4.6/prebuilt/$OS-x86_64
    
PLATFORM_VERSION=android-5
    
build_ffmpeg
    
build_one

    My Android.mk file looks like this :

    LOCAL_PATH := $(call my-dir)
    

    
include $(CLEAR_VARS)
    
LOCAL_MODULE := ffmpeg-prebuilt
    
LOCAL_SRC_FILES := ffmpeg-build/$(TARGET_ARCH_ABI)/libffmpeg.so
    
LOCAL_EXPORT_C_INCLUDES := ffmpeg-build/$(TARGET_ARCH_ABI)/include
    
LOCAL_EXPORT_LDLIBS := ffmpeg-build/$(TARGET_ARCH_ABI)/libffmpeg.so
    
LOCAL_PRELINK_MODULE := true
    
include $(PREBUILT_SHARED_LIBRARY)
    

    
include $(CLEAR_VARS)
    
LOCAL_ALLOW_UNDEFINED_SYMBOLS=false
    
LOCAL_MODULE    := native
    
LOCAL_SRC_FILES := native.c
    
LOCAL_LDLIBS := -llog
    
LOCAL_C_INCLUDES := $(LOCAL_PATH)/ffmpeg-build/$(TARGET_ARCH_ABI)/include
    
LOCAL_SHARED_LIBRARY := ffmpeg-prebuilt
    
include $(BUILD_SHARED_LIBRARY)

    The actual code I am trying to use is very simple and looks like this :

    #include 
    
#include <android></android>log.h>
    
#include <libavcodec></libavcodec>avcodec.h>
    
#include <libavformat></libavformat>avformat.h>
    

    
static jint Java_dk_bendingspoons_clipstitch_VideoLoader_start(JNIEnv * env, jobject thiz, jstring path)
    
{
    
    __android_log_print(ANDROID_LOG_VERBOSE, "native", "Before register all.");
    
    av_register_all();
    

    
    return 0;
    
}

    The compilation of both ffmpeg and my code is without any errors. The problem is that when I am loading the library in Android it fails with the error : Fatal signal 11 (SIGSEGV) at 0xdeadbaad (code=1), thread 27050. This leads me to believe that there is something that I am doing wrong when compiling.

    I should mention that I am compiling on Ubuntu 13.10 x64 with NDK-r9c-x86_64.

    How should I proceed in finding out what the issue is ?

  • arm-linux-androideabi-gcc is unable to create an executable - compile ffmpeg for android armeabi devices

    6 décembre 2015, par Chaitanya Chandurkar

    I am trying to compile ffmpeg for android armeabi devices.
    I am following tutorial by roman10.net
    His given build script builds ffmpeg for armv7-a devices. I want to build it for armeabi.

    My ultimate aim is to run ffmpeg commands on android armeabi and armv7-a devices.

    So I change the script’s CPU part from

    #arm v7vfpv3
    
CPU=armv7-a
    
OPTIMIZE_CFLAGS="-mfloat-abi=softfp -mfpu=vfpv3-d16 -marm -march=$CPU "
    
PREFIX=./android/$CPU
    
ADDITIONAL_CONFIGURE_FLAG=
    
build_one

    to

    #arm v6
    
CPU=armv6
    
OPTIMIZE_CFLAGS="-marm -march=$CPU"
    
PREFIX=./android/$CPU 
    
ADDITIONAL_CONFIGURE_FLAG=
    
build_one

    (I thought changing it to armv6 would build ffmpeg compatible with armeabi devices. m I wrong ?)

    Doubt 1 :
    Do I also have to change toolchain ?
    i.e from arm-linux-androideabi-4.4.3 to arm-eabi-4.4.0 ?????

    Doubt 2 :

    When I try running ./build.sh (without changing toolchain) it gives me following error : 

    /home/chaitanya/android/android-ndk-r5b/toolchains/arm-linux-androideabi-4.4.3/prebuilt/linux-x86/bin/arm-linux-androideabi-gcc is unable to create an executable file.
    
C compiler test failed.
    

    
If you think configure made a mistake,.. blaah blahh blaah

    after that I got lot of warnings saying :
    ‘sub_id’ is deprecated and many other function deprecated warnings.

    platform : ubuntu 11.10
    ffmpeg version : 0.11.2
    NDK : android-ndk-r5b

    Here is my build script :

    #!/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=~/android/android-ndk-r5b
    
PLATFORM=$NDK/platforms/android-8/arch-arm/
    
PREBUILT=$NDK/toolchains/arm-linux-androideabi-4.4.3/prebuilt/linux-x86
    
function build_one
    
{
    
./configure --target-os=linux \
    
    --prefix=$PREFIX \
    
    --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 \
    
    --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 \
    
    --extra-ldflags="-Wl,-rpath-link=$PLATFORM/usr/lib -L$PLATFORM/usr/lib -nostdlib -lc -lm -ldl -llog" \
    
    --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=mpeg4 \
    
    --enable-decoder=h264 \
    
    --enable-parser=h264 \
    
    --disable-network \
    
    --enable-zlib \
    
    --disable-avfilter \
    
    --disable-avdevice \
    
    $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 -shared -nostdlib  -z,noexecstack -Bsymbolic --whole-archive --no-undefined -o $PREFIX/libffmpeg.so libavcodec/libavcodec.a libavformat/libavformat.a libavutil/libavutil.a libswscale/libswscale.a -lc -lm -lz -ldl -llog  --warn-once  --dynamic-linker=/system/bin/linker $PREBUILT/lib/gcc/arm-linux-androideabi/4.4.3/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

    How do I tackle this problem ? what is going wrong ?

  • ffmpeg failing to convert

    27 mars 2014, par Daniel7912

    I am using the following command to convert a mp4 on my server to webm as part of a Node.js script.

    var command = execSync(&#39;ffmpeg -i &#39;+video+&#39; -vpre libvpx-720p -cpu-used -5 -deadline realtime -b 3900k -an -f webm -y &#39;+saveTo);

    When running the command in a regular terminal, it works fine. However, when running it as above using the execSync() node package, I get the following console output.

    Error: ffmpeg version 1.0.8 Copyright (c) 2000-2013 the FFmpeg developers
    
  built on Mar 27 2014 17:09:06 with gcc 4.7.3 (Gentoo 4.7.3-r1 p1.3, pie-0.5.5)
    
  configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64 --mandir=/usr/share/man --enable-shared --cc=x86_64-pc-linux-gnu-gcc --cxx=x86_64-pc-linux-gnu-
    
g++ --ar=x86_64-pc-linux-gnu-ar --optflags=&#39;-O2 -pipe -march=native -fomit-frame-pointer&#39; --extra-cflags=&#39;-O2 -pipe -march=native -fomit-frame-pointer&#39; --extra-cxxflags
    
=&#39;-O2 -pipe -march=native -fomit-frame-pointer&#39; --disable-static --enable-gpl --enable-version3 --enable-postproc --enable-avfilter --enable-avresample --disable-stripp
    
ing --disable-debug --disable-doc --disable-vaapi --disable-vdpau --disable-ffplay --disable-runtime-cpudetect --enable-libmp3lame --enable-libvo-aacenc --enable-libthe
    
ora --enable-libfdk-aac --enable-nonfree --disable-indev=v4l2 --disable-indev=alsa --disable-indev=oss --disable-indev=jack --disable-outdev=alsa --disable-outdev=oss -
    
-disable-outdev=sdl --enable-libvorbis --enable-libvpx --disable-amd3dnow --disable-amd3dnowext --disable-altivec --disable-avx --disable-mmxext --disable-ssse3 --disab
    
le-vis --disabl  libavutil      51. 73.101 / 51. 73.101
    
  libavcodec     54. 59.100 / 54. 59.100
    
  libavformat    54. 29.104 / 54. 29.104
    
  libavdevice    54.  2.101 / 54.  2.101
    
  libavfilter     3. 17.100 /  3. 17.100
    
  libswscale      2.  1.101 /  2.  1.101
    
  libswresample   0. 15.100 /  0. 15.100
    
  libpostproc    52.  0.100 / 52.  0.100
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from &#39;/path/to/video/input.mp4&#39;:
    
  Metadata:
    
    major_brand     : mp42
    
    minor_version   : 0
    
    compatible_brands: mp42isomavc1
    
    creation_time   : 2013-08-24 21:58:35
    
    encoder         : HandBrake 0.9.9 2013051800
    
  Duration: 00:06:31.46, start: 0.000000, bitrate: 5092 kb/s
    
    Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 4919 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc
    
    Metadata:
    
      creation_time   : 2013-08-24 21:58:35
    
    Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, s16, 168 kb/s
    
    Metadata:
    
      creation_time   : 2013-08-24 21:58:35
    
Please use -b:a or -b:v, -b is ambiguous
    
[libvpx @ 0x7f0c40] v1.3.0
    
Output #0, webm, to &#39;/path/to/video/output.webm&#39;:
    
  Metadata:
    
    major_brand     : mp42
    
    minor_version   : 0
    
    compatible_brands: mp42isomavc1
    
    encoder         : Lavf54.29.104
    
    Stream #0:0(und): Video: vp8, yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], q=11-51, 3900 kb/s, 1k tbn, 25 tbc
    
    encoder         : Lavf54.29.104                                                                                                                          [4009/9202]
    
    Stream #0:0(und): Video: vp8, yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], q=11-51, 3900 kb/s, 1k tbn, 25 tbc
    
    Metadata:
    
      creation_time   : 2013-08-24 21:58:35
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (h264 -> libvpx)
    
Press [q] to stop, [?] for help
    
[h264 @ 0x8f42a0] AVC: nal size 3235393
    
    Last message repeated 1 times
    
[h264 @ 0x8f42a0] no frame!
    
[h264 @ 0x7be7e0] concealing 7123 DC, 7123 AC, 7123 MV errors in P frame
    
[h264 @ 0x8f46c0] AVC: nal size 2572289
    
    Last message repeated 1 times
    
[h264 @ 0x8f46c0] no frame!
    
[h264 @ 0x8f4ae0] AVC: nal size 11559745
    
    Last message repeated 1 times
    
[h264 @ 0x8f4ae0] no frame!
    
[h264 @ 0x8f4f00] AVC: nal size 781975966
    
    Last message repeated 1 times
    
[h264 @ 0x8f4f00] no frame!
    
[h264 @ 0x7be7e0] AVC: nal size -1537130086
    
    Last message repeated 1 times
    
[h264 @ 0x7be7e0] no frame!
    
Error while decoding stream #0:0: Operation not permitted
    
[h264 @ 0x8f42a0] AVC: nal size -1303101030
    
    Last message repeated 1 times
    
[h264 @ 0x8f42a0] no frame!
    
Error while decoding stream #0:0: Operation not permitted
    
[h264 @ 0x8f46c0] AVC: nal size 833290655
    
    Last message repeated 1 times
    
[h264 @ 0x8f46c0] no frame!
    
Error while decoding stream #0:0: Operation not permitted
    
[h264 @ 0x8f4ae0] AVC: nal size -816365157
    
    Last message repeated 1 times
    
[h264 @ 0x8f4ae0] no frame!
    
Error while decoding stream #0:0: Operation not permitted
    
[h264 @ 0x8f4f00] AVC: nal size 776798623
    
    Last message repeated 1 times
    
[h264 @ 0x8f4f00] no frame!
    
Error while decoding stream #0:0: Operation not permitted
    
[h264 @ 0x7be7e0] AVC: nal size -824622693
    
    Last message repeated 1 times
    
[h264 @ 0x7be7e0] no frame!
    
Error while decoding stream #0:0: Operation not permitted
    
[h264 @ 0x8f42a0] AVC: nal size 1276789151
    
Error while decoding stream #0:0: Operation not permitted
    
frame=    4 fps=0.0 q=0.0 Lsize=     107kB time=00:00:00.16 bitrate=5476.5kbits/s    
    
video:106kB audio:0kB subtitle:0 global headers:0kB muxing overhead 0.473334%
    
Received signal 2: terminating.

    The 'no frame' bits repeat several thousand times before it reaches the final section.

    Could someone tell me what's wrong ?

    Thanks for any help

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