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  • Le profil des utilisateurs

    12 April 2011, by

    Chaque utilisateur dispose d’une page de profil lui permettant de modifier ses informations personnelle. Dans le menu de haut de page par défaut, un élément de menu est automatiquement créé à l’initialisation de MediaSPIP, visible uniquement si le visiteur est identifié sur le site.
    L’utilisateur a accès à la modification de profil depuis sa page auteur, un lien dans la navigation "Modifier votre profil" est (...)

  • Configurer la prise en compte des langues

    15 November 2010, by

    Accéder à la configuration et ajouter des langues prises en compte
    Afin de configurer la prise en compte de nouvelles langues, il est nécessaire de se rendre dans la partie "Administrer" du site.
    De là, dans le menu de navigation, vous pouvez accéder à une partie "Gestion des langues" permettant d’activer la prise en compte de nouvelles langues.
    Chaque nouvelle langue ajoutée reste désactivable tant qu’aucun objet n’est créé dans cette langue. Dans ce cas, elle devient grisée dans la configuration et (...)

  • XMP PHP

    13 May 2011, by

    Dixit Wikipedia, XMP signifie :
    Extensible Metadata Platform ou XMP est un format de métadonnées basé sur XML utilisé dans les applications PDF, de photographie et de graphisme. Il a été lancé par Adobe Systems en avril 2001 en étant intégré à la version 5.0 d’Adobe Acrobat.
    Étant basé sur XML, il gère un ensemble de tags dynamiques pour l’utilisation dans le cadre du Web sémantique.
    XMP permet d’enregistrer sous forme d’un document XML des informations relatives à un fichier : titre, auteur, historique (...)

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  • Problems of using MediaCodec.getOutputFormat() for an encoder in Android 4.1/4.2 devices

    13 March 2014, by Mark

    I'm trying to use MediaCodec to encode frames (either by camera or decoder) into a video.
    When processing the encoder output by dequeueOutputBuffer(), I expect to receive the return index = MediaCodec.INFO_OUTPUT_FORMAT_CHANGED, so I can call getOutputFormat() to get the encoder output format as the input of the currently used ffmpeg muxer.

    I have tested some pad/phone devices with Android version 4.1 4.3. All of them have at least one hardware video AVC encoder and is used in the test. On the devices with version 4.3, the encoder gives MediaCodec.INFO_OUTPUT_FORMAT_CHANGED before writing the encoded data as expected, and the output format returned from getOutputFormat() can be used by the muxer correctly. On the devices with 4.2.2 or lower, the encoder never gives MediaCodec.INFO_OUTPUT_FORMAT_CHANGED while it can still output the encoded elementary stream, but the muxer cannot know the exact output format.

    I want to ask the following questions:

    1. Does the behavior of encoder (gives MediaCodec.INFO_OUTPUT_FORMAT_CHANGED or not before outputing encoded data) depend on the Android API Level or the chips on individual devices?
    2. If the encoder writes data before MediaCodec.INFO_OUTPUT_FORMAT_CHANGED appears, is there any way to get the output format of the encoded data?
    3. The encoder still output the codec config data (with flag MediaCodec.BUFFER_FLAG_CODEC_CONFIG) on the devices before the encoded data. It is mostly used to config a decoder, but can I derive the output format by the codec config data?

    I have tried these solutions to get the output format but failed:

    • Call getOutputFormat() frequently during the whole encode process. However, all of them throw IllegalStateException without the appearance of MediaCodec.INFO_OUTPUT_FORMAT_CHANGED.

    • Use the initial MediaFormat use to config the encoder at the beginning, like the example:

      m_init_encode_format = MediaFormat.createVideoFormat(m_encode_video_mime, m_frame_width, m_frame_height);
      
int encode_bit_rate = 3000000;
      
int encode_frame_rate = 15;
      
int encode_iframe_interval = 2;
      

      
m_init_encode_format.setInteger(MediaFormat.KEY_COLOR_FORMAT, m_encode_color_format);
      
m_init_encode_format.setInteger(MediaFormat.KEY_BIT_RATE, encode_bit_rate);
      
m_init_encode_format.setInteger(MediaFormat.KEY_FRAME_RATE, encode_frame_rate);
      
m_init_encode_format.setInteger(MediaFormat.KEY_I_FRAME_INTERVAL, encode_iframe_interval);
      

      
m_encoder = MediaCodec.createByCodecName(m_video_encoder_codec_info.getName());
      
m_encoder.configure(m_init_encode_format, null, null, MediaCodec.CONFIGURE_FLAG_ENCODE);
      

      
// Assume m_init_encode_format is the output format of the encoder

      However it fails since the output format of the encoder is still "changed" from the initial one.

    Please help me to realize the behavior of an encoder, and if there is any solution to query the output format if the required MediaCodec.INFO_OUTPUT_FORMAT_CHANGED is missing.

    By comparing the output format and the codec config data, the missing fields are csd-0, csd-1, and a "what" field with value = 1869968451.
    (I do not understand the "what" field. It seems to be a constant and is not required. Can anyone tell me about its meaning?)

    If I parse the codec config data as the csd-1 field (last 8 bytes) and csd-0 field (remaining bytes), it seems that the muxer can work correctly and output a video playable on all of the testing devices.
    (But I want to ask: is this 8-byte assumption correct, or there is more reliable way to parse the data?)

    However, I got another problem that If I decode the video by Android MediaCodec again, the BufferInfo.presentationTimeUs value get by dequeueOutputBuffer() is 0 for most of the decoded frames. Only the last few frames has correct time. The sample time get by MediaExtractor.getSampleTime() is correct and exactly the value I set to the encoder/muxer, but the decoded frame time is not. This issue only happen on 4.2.2 or lower device.

    It is strange that the frame time is incorrect but the video can be playback in correct speed on the device. (Most of the devices with 4.2.2 or lower I've tested has only 1 Video AVC decoder.) Do I need to set other fields that may affect the presentation time?

  • ffmpeg: Build failed in windows with cygwin for Android

    25 June 2014, by Smith

    I have trying building ffmpeg for android using windows 7 and Cygwin. I have android-ndk-r9d.

    I have download the source code from here

    I have already set NDK environment variable. And updated TOOLCHAIN line to: TOOLCHAIN=echo $NDK/toolchains/arm-linux-androideabi-4.8/prebuilt/windows-x86_64 because linux folder not present.

    After running ./build.sh command. I got following error:

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

    
If you think configure made a mistake, make sure you are using the latest
    
version from SVN.  If the latest version fails, report the problem to the
    
ffmpeg-user@mplayerhq.hu mailing list or IRC #ffmpeg on irc.freenode.net.
    
Include the log file "config.log" produced by configure as this will help
    
solving the problem.

    Help me to find out what I did wrong?

  • Build FFMPEG with libx264 Android

    4 June 2015, by Biraj Zalavadia

    I was able to Build FFMPEG with libx264 Android successfully and was working well before 2 months.

    I uses halfninja for building.

    Today I take latest source of ffmpeg and libX264 from here.

    git clone git://git.videolan.org/x264.git
    

    
git clone git://git.videolan.org/ffmpeg.git

    And try to rebuild whole project. But now it throws following errors.

     ffmpeg.c:2406: error: undefined reference to 'hwaccels'
    
 ffmpeg.c:3390: error: undefined reference to 'qp_hist'
    
 ffmpeg.c:3390: error: undefined reference to 'do_hex_dump'
    
 ffmpeg.c:3390: error: undefined reference to 'do_pkt_dump'
    
 ffmpeg.c:576: error: undefined reference to 'do_benchmark_all'
    
 ffmpeg.c:657: error: undefined reference to 'audio_sync_method'
    
 ffmpeg.c:1222: error: undefined reference to 'vstats_filename'
    
 ffmpeg.c:972: error: undefined reference to 'frame_drop_threshold'
    
 ffmpeg.c:1181: error: undefined reference to 'debug_ts'
    
 ffmpeg.c:2742: error: undefined reference to 'copy_tb'
    
 ffmpeg.c:2846: error: undefined reference to 'audio_volume'
    
 ffmpeg.c:2862: error: undefined reference to 'init_simple_filtergraph'
    
 ffmpeg.c:2863: error: undefined reference to 'configure_filtergraph'
    
 ffmpeg.c:2923: error: undefined reference to 'video_sync_method'
    
 ffmpeg.c:2538: error: undefined reference to 'frame_bits_per_raw_sample'
    
 ffmpeg.c:3258: error: undefined reference to 'sdp_filename'
    
 ffmpeg.c:2087: error: undefined reference to 'ist_in_filtergraph'
    
 ffmpeg.c:4069: error: undefined reference to 'ffmpeg_parse_options'
    
 ffmpeg.c:4074: error: undefined reference to 'show_usage'
    
 ffmpeg.c:3303: error: undefined reference to 'options'
    
 ffmpeg.c:3303: error: undefined reference to 'stdin_interaction'
    
 ffmpeg.c:2553: error: undefined reference to 'exit_on_error'
    
 ffmpeg.c:2553: error: undefined reference to 'do_pkt_dump'
    
 ffmpeg.c:2553: error: undefined reference to 'do_hex_dump'
    
 ffmpeg.c:3727: error: undefined reference to 'copy_ts'
    
 ffmpeg.c:3727: error: undefined reference to 'dts_delta_threshold'
    
 ffmpeg.c:268: error: undefined reference to 'dts_error_threshold'
    
 ffmpeg.c:3976: error: undefined reference to 'print_stats'
    
 ffmpeg.c:1694: error: undefined reference to 'do_benchmark'
    
 ffmpeg.c:1694: error: undefined reference to 'max_error_rate'

    Please help me out to resolve this.

    Please look at my script.

    build_android.sh

    #!/bin/bash
    
#
    
# build_android.sh
    
# Copyright (c) 2012 Jacek Marchwicki
    
#
    
# Licensed under the Apache License, Version 2.0 (the "License");
    
# you may not use this file except in compliance with the License.
    
# You may obtain a copy of the License at
    
#
    
#     http://www.apache.org/licenses/LICENSE-2.0
    
#
    
# Unless required by applicable law or agreed to in writing, software
    
# distributed under the License is distributed on an "AS IS" BASIS,
    
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    
# See the License for the specific language governing permissions and
    
# limitations under the License.
    

    
export NDK=/home/tasol/DEVELOPMENT/IJOOMER_DEVELOPMENT/NDK/android-ndk-r10d
    

    
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_x264
    
{
    
    PLATFORM=$NDK/platforms/$PLATFORM_VERSION/arch-$ARCH/
    
    export PATH=${PATH}:$PREBUILT/bin/
    
    CROSS_COMPILE=$PREBUILT/bin/$EABIARCH-
    
    CFLAGS=$OPTIMIZE_CFLAGS
    
#CFLAGS=" -I$ARM_INC -fpic -DANDROID -fpic -mthumb-interwork -ffunction-sections -funwind-tables -fstack-protector -fno-short-enums -D__ARM_ARCH_5__ -D__ARM_ARCH_5T__ -D__ARM_ARCH_5E__ -D__ARM_ARCH_5TE__  -Wno-psabi -march=armv5te -mtune=xscale -msoft-float -mthumb -Os -fomit-frame-pointer -fno-strict-aliasing -finline-limit=64 -DANDROID  -Wa,--noexecstack -MMD -MP "
    
    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 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"
    

    
    cd x264
    
    ./configure --disable-asm --prefix=$(pwd)/$PREFIX --host=$ARCH-linux --enable-static $ADDITIONAL_CONFIGURE_FLAG || exit 1
    

    
    make clean || exit 1
    
    make -j4 install || exit 1
    
    cd ..
    
}
    

    
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-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 \
    
        --disable-stripping \
    
        --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" \
    
            --enable-gpl \
    
        --enable-encoder=libx264 \
    
        --enable-libx264 \
    
        --enable-parser=mjpeg \
    
        --enable-demuxer=image2 \
    
        --enable-hwaccel=h264_vaapi \
    
        --enable-hwaccel=h264_vaapi \
    
        --enable-hwaccel=h264_dxva2 \
    
        --enable-hwaccel=mpeg4_vaapi \
    
        --enable-demuxer=mov \
    
        --enable-demuxer=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 \
    
        --disable-network \
    
            --enable-filter=buffer \
    
        --enable-filter=buffersink \
    
        --enable-filter=scale \
    
        --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 \
    
        --disable-demuxer=v4l \
    
        --disable-demuxer=v4l2 \
    
        --disable-indev=v4l \
    
        --disable-indev=v4l2 \
    
        --disable-ffplay \
    
        --disable-ffmpeg \
    
        --disable-ffplay \
    
        --disable-ffprobe \
    
        --disable-ffserver \
    
        --enable-nonfree \
    
        --enable-version3 \
    
        --enable-memalign-hack \
    
        --disable-asm \
    
        $ADDITIONAL_CONFIGURE_FLAG \
    
        || exit 1
    
    make clean || exit 1
    
    make -j4 install || exit 1
    

    
    cd ..
    
}
    

    
function build_one {
    
    cd ffmpeg
    
    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=$NDK/toolchains/arm-linux-androideabi-4.8/prebuilt/$OS-x86_64
    
#PREBUILT=$NDK/toolchains/arm-linux-androideabi-4.6/prebuilt/$OS-x86
    
PLATFORM_VERSION=android-5
    
build_x264
    
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=$NDK/toolchains/arm-linux-androideabi-4.8/prebuilt/$OS-x86_64
    
#PREBUILT=$NDK/toolchains/arm-linux-androideabi-4.6/prebuilt/$OS-x86
    
#PLATFORM_VERSION=android-5
    
#build_x264
    
#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=../ffmpeg-build/armeabi-v7a
    
#PREFIX=../ffmpeg-build/armeabi-v7a-neon
    
OUT_LIBRARY=../ffmpeg-build/armeabi-v7a/libffmpeg-neon.so
    
ADDITIONAL_CONFIGURE_FLAG=--enable-neon
    
SONAME=libffmpeg-neon.so
    
PREBUILT=$NDK/toolchains/arm-linux-androideabi-4.8/prebuilt/$OS-x86_64
    
#PREBUILT=$NDK/toolchains/arm-linux-androideabi-4.6/prebuilt/$OS-x86
    
PLATFORM_VERSION=android-9
    
build_x264
    
build_ffmpeg
    
build_one
    

    
#x86
    
EABIARCH=i686-linux-android
    
ARCH=x86
    
OPTIMIZE_CFLAGS="-m32"
    
PREFIX=../ffmpeg-build/x86
    
OUT_LIBRARY=$PREFIX/libffmpeg.so
    
ADDITIONAL_CONFIGURE_FLAG=--disable-asm
    
SONAME=libffmpeg.so
    
PREBUILT=$NDK/toolchains/x86-4.8/prebuilt/$OS-x86_64
    
#PREBUILT=$NDK/toolchains/x86-4.6/prebuilt/$OS-x86
    
PLATFORM_VERSION=android-9
    
build_x264
    
build_ffmpeg
    
build_one
    

    
#mips
    
EABIARCH=mipsel-linux-android
    
ARCH=mips
    
OPTIMIZE_CFLAGS="-EL -march=mips32 -mips32 -mhard-float"
    
PREFIX=../ffmpeg-build/mips
    
OUT_LIBRARY=$PREFIX/libffmpeg.so
    
ADDITIONAL_CONFIGURE_FLAG=""
    
SONAME=libffmpeg.so
    
PREBUILT=$NDK/toolchains/mipsel-linux-android-4.8/prebuilt/$OS-x86_64
    
#PREBUILT=$NDK/toolchains/mipsel-linux-android-4.6/prebuilt/$OS-x86
    
PLATFORM_VERSION=android-9
    
build_x264
    
build_ffmpeg
    
build_one

    build_all.sh

    #!/bin/bash
    
#
    
# build_all.sh
    

    
export NDK=/home/tasol/DEVELOPMENT/IJOOMER_DEVELOPMENT/NDK/android-ndk-r10d
    
sudo ./build_android.sh
    
$NDK/ndk-build
    

    
echo "Done Dona Done!!!"

    Android.mk

    LOCAL_PATH := $(call my-dir)
    

    
include $(CLEAR_VARS)
    
LOCAL_MODULE  := videokit
    
# These need to be in the right order
    
FFMPEG_LIBS := $(addprefix ffmpeg-build/$(TARGET_ARCH_ABI)/lib/, \
    
 libavdevice.a \
    
 libavformat.a \
    
 libavfilter.a \
    
 libavcodec.a \
    
 libswscale.a \
    
 libavutil.a \
    
 libswresample.a \
    
 libpostproc.a )
    
# ffmpeg uses its own deprecated functions liberally, so turn off that annoying noise
    
LOCAL_CFLAGS += -g -Iffmpeg -Ivideokit -Wno-deprecated-declarations 
    
LOCAL_LDLIBS += -llog -lz $(FFMPEG_LIBS) ffmpeg-build/$(TARGET_ARCH_ABI)/lib/libx264.a
    
LOCAL_SRC_FILES := videokit/uk_co_halfninja_videokit_Videokit.c videokit/ffmpeg.c videokit/cmdutils.c
    
include $(BUILD_SHARED_LIBRARY)
    

    

    
include $(CLEAR_VARS)
    
LOCAL_MODULE  := ffmpeg
    
FFMPEG_LIBS := $(addprefix ffmpeg-build/$(TARGET_ARCH_ABI)/lib/, \
    
 libavdevice.a \
    
 libavformat.a \
    
 libavfilter.a \
    
 libavcodec.a \
    
 libswscale.a \
    
 libavutil.a \
    
 libswresample.a \
    
 libpostproc.a )
    
LOCAL_CFLAGS += -g -Iffmpeg -Ivideokit -Wno-deprecated-declarations 
    
LOCAL_LDLIBS += -llog -lz $(FFMPEG_LIBS) ffmpeg-build/$(TARGET_ARCH_ABI)/lib/libx264.a
    
LOCAL_SRC_FILES := ffmpeg/ffmpeg.c ffmpeg/cmdutils.c
    
include $(BUILD_EXECUTABLE)

    Application.mk

    APP_ABI := armeabi,armeabi-v7a,x86,mips
    
APP_PLATFORM := android-10
    
APP_STL := gnustl_static

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