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  • MediaSPIP Core : La Configuration

    9 novembre 2010, par

    MediaSPIP Core fournit par défaut trois pages différentes de configuration (ces pages utilisent le plugin de configuration CFG pour fonctionner) : une page spécifique à la configuration générale du squelettes ; une page spécifique à la configuration de la page d’accueil du site ; une page spécifique à la configuration des secteurs ;
    Il fournit également une page supplémentaire qui n’apparait que lorsque certains plugins sont activés permettant de contrôler l’affichage et les fonctionnalités spécifiques (...)

  • Le profil des utilisateurs

    12 avril 2011, par

    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 novembre 2010, par

    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 (...)

Sur d’autres sites (6754)

  • Piwik Developer Guides : helping you make the most of the Piwik platform

    16 avril 2015, par Piwik Core Team — Community, Development, Plugins

    At Piwik we are creating the leading open analytics platform that gives every user full control over their data. Today we are excited to announce the official launch of the Piwik Developer Guides at developer.piwik.org. The Developer Guides complement existing User Guides and more than 250 FAQs.

    Piwik Developer Guides

    The Developer guides will help you whenever you need to :

    Helping Developers innovate with Piwik

    Piwik is an open platform – it is open because users control their data, users control the Piwik software (it is Free/libre software) and also because users can extend the platform via the powerful plugins architecture. Piwik users can already choose from 49 plugins available on the Marketplace ! (as of 2015 April 16th)

    Now that developer guides are officially released, we are hopeful that even more talented developers will be able to create Plugins and distribute them on the Marketplace.

    Share your feedback

    We are committed to providing excellent Developer Guides and to achieve this, we need to hear your feedback and suggestions. To send us a message, click on the “Give Feedback” link in the footer of pages (we are listening !).

    What’s coming next ?

    • Platform Developer Changelog will continue to list all changes to the Piwik Platform and APIs.
    • We will regularly update the guides when there are changes in the platform.
    • We will improve existing guides based on users’ feedback and suggestions (tasks are tracked in this issue tracker on Github.)

    We hope you find the guides useful, and thank you for being part of the Piwik community !

  • Undefined symbol despite libraries being linked

    17 septembre 2020, par Areopag

    currently I'm trying to write a JNI function using ffmpeg features, but when I'm trying to run my java executable after a clean compile I get the following error :

    


    /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java: symbol lookup error: /lib/libmediaserv_ffmpeg.so: undefined symbol: _Z19avformat_open_inputPP15AVFormatContextPKcP13AVInputFormatPP12AVDictionary


    


    I can't figure out why ffmpeg is not linked correctly.

    


    mediaserv_ffmpeg.cpp :

    


    #include <iostream>&#xA;#include <libavformat></libavformat>avformat.h>&#xA;#include <libavutil></libavutil>avutil.h>&#xA;&#xA;JNIEXPORT jobject JNICALL Java_mediaserv_ffmpeg_getMetadata&#xA;        (JNIEnv* env, jclass cls, jstring path) { ... }&#xA;</iostream>

    &#xA;

    What I've tried so far is inspecting libmediaserv_ffmpeg.so :

    &#xA;

     nm libmediaserv_ffmpeg.so --format=sysv | grep avformat&#xA;_Z19avformat_open_inputPP15AVFormatContextPKcP13AVInputFormatPP12AVDictionary|                |   U  |            NOTYPE|                |     |*UND*&#xA;_Z20avformat_close_inputPP15AVFormatContext|                |   U  |            NOTYPE|                |     |*UND*&#xA;_Z25avformat_find_stream_infoP15AVFormatContextPP12AVDictionary|                |   U  |            NOTYPE|                |     |*UND*&#xA;

    &#xA;

    Which, I think, is just another way of saying that there are undefined symbols in the .so file.

    &#xA;

    The commands used to build the lib (taken from make VERBOSE=1) :

    &#xA;

    /usr/bin/c&#x2B;&#x2B;  -Dmediaserv_ffmpeg_EXPORTS -I/usr/lib/jvm/java-11-openjdk-amd64/include -I/usr/lib/jvm/java-11-openjdk-amd64/include/linux -I/mnt/g/Workspace/mediaserv/third-party/ffmpeg  -fPIC   -std=gnu&#x2B;&#x2B;1z -o CMakeFiles/mediaserv_ffmpeg.dir/mediaserv_ffmpeg.cpp.o -c /mnt/g/Workspace/mediaserv/third-party/mediaserv_ffmpeg.cpp&#xA;/usr/bin/c&#x2B;&#x2B; -fPIC   -shared -Wl,-soname,libmediaserv_ffmpeg.so -o /mnt/g/Workspace/mediaserv/build/libs/libmediaserv_ffmpeg.so CMakeFiles/mediaserv_ffmpeg.dir/mediaserv_ffmpeg.cpp.o  -Wl,-rpath,/usr/lib/jvm/java-11-openjdk-amd64/lib:/usr/lib/jvm/java-11-openjdk-amd64/lib/server:/mnt/g/Workspace/mediaserv/third-party/ffmpeg/libavutil:/mnt/g/Workspace/mediaserv/third-party/ffmpeg/libavformat /usr/lib/jvm/java-11-openjdk-amd64/lib/libjawt.so /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so ../ffmpeg/libavutil/libavutil.so ../ffmpeg/libavformat/libavformat.so&#xA;

    &#xA;

    I've already tried to seek for errors in GCC's trace option for the linker and it lists me which libraries it tries to link / is linking but the result stays the same.

    &#xA;

    /usr/bin/ld: mode elf_x86_64&#xA;/usr/lib/gcc/x86_64-linux-gnu/7/../../../x86_64-linux-gnu/crti.o&#xA;/usr/lib/gcc/x86_64-linux-gnu/7/crtbeginS.o&#xA;CMakeFiles/mediaserv_ffmpeg.dir/mediaserv_ffmpeg.cpp.o&#xA;/usr/lib/jvm/java-11-openjdk-amd64/lib/libjawt.so&#xA;/usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so&#xA;../ffmpeg/libavutil/libavutil.so&#xA;../ffmpeg/libavformat/libavformat.so&#xA;-lstdc&#x2B;&#x2B; (/usr/lib/gcc/x86_64-linux-gnu/7/libstdc&#x2B;&#x2B;.so)&#xA;/lib/x86_64-linux-gnu/libm.so.6&#xA;/lib/x86_64-linux-gnu/libmvec.so.1&#xA;libgcc_s.so.1 (/usr/lib/gcc/x86_64-linux-gnu/7/libgcc_s.so.1)&#xA;/lib/x86_64-linux-gnu/libc.so.6&#xA;/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2&#xA;/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2&#xA;libgcc_s.so.1 (/usr/lib/gcc/x86_64-linux-gnu/7/libgcc_s.so.1)&#xA;/usr/lib/gcc/x86_64-linux-gnu/7/crtendS.o&#xA;/usr/lib/gcc/x86_64-linux-gnu/7/../../../x86_64-linux-gnu/crtn.o&#xA;

    &#xA;

    CMakeLists.txt :

    &#xA;

    cmake_minimum_required(VERSION 3.17)&#xA;project(mediaserv_ffmpeg)&#xA;&#xA;set(CMAKE_CXX_STANDARD 17)&#xA;set(BUILD_SHARED_LIBS ON)&#xA;add_library(${PROJECT_NAME} SHARED mediaserv_ffmpeg.cpp mediaserv_ffmpeg.h)&#xA;&#xA;find_package(JNI REQUIRED)&#xA;&#xA;find_path(AVUTIL_INCLUDE_DIR libavutil/avutil.h HINTS ffmpeg REQUIRED)&#xA;find_library(AVUTIL_LIBRARY avutil HINTS ${PROJECT_SOURCE_DIR}/ffmpeg/libavutil PATHS REQUIRED)&#xA;&#xA;find_path(AVFORMAT_INCLUDE_DIR libavformat/avformat.h HINTS ffmpeg REQUIRED)&#xA;find_library(AVFORMAT_LIBRARY avformat HINTS ${PROJECT_SOURCE_DIR}/ffmpeg/libavformat REQUIRED)&#xA;&#xA;target_include_directories(${PROJECT_NAME} PRIVATE ${JNI_INCLUDE_DIRS} ${AVUTIL_INCLUDE_DIR} ${AVFORMAT_INCLUDE_DIR})&#xA;&#xA;target_link_libraries(${PROJECT_NAME} ${JNI_LIBRARIES} ${AVUTIL_LIBRARY} ${AVFORMAT_LIBRARY})&#xA;

    &#xA;

    Neither ffmpeg taken from the official ubuntu bionic repository nor a self-compiled version with configure --enable-shared works for me.

    &#xA;

    Where is my mistake or what could I still inspect ?

    &#xA;

    Thanks in advance.

    &#xA;

  • ffmpeg : Overlay audios with different lengths using amix and apad

    23 novembre 2017, par Valdir

    I’m trying to overlay two audio files with the following command :

    ffmpeg -y -i mp3/test1.mp3 -i mp3/test2.mp3 -filter_complex "[0:0][1:0] amix=inputs=2:duration=longest" -c:a libmp3lame merged.mp3

    But it fails if the length of the audios are different :

    ffmpeg -y -i live.mp3 -i mp3/test1.mp3 -filter_complex "[0:0][1:0] amix=inputs=2:duration=longest" -c:a libmp3lame merged2.mp3
    
ffmpeg version 2.8.11-0ubuntu0.16.04.1 Copyright (c) 2000-2017 the FFmpeg developers
    
  built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.4) 20160609
    
  configuration: --prefix=/usr --extra-version=0ubuntu0.16.04.1 --build-suffix=-ffmpeg --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --cc=cc --cxx=g++ --enable-gpl --enable-shared --disable-stripping --disable-decoder=libopenjpeg --disable-decoder=libschroedinger --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librtmp --enable-libschroedinger --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzvbi --enable-openal --enable-opengl --enable-x11grab --enable-libdc1394 --enable-libiec61883 --enable-libzmq --enable-frei0r --enable-libx264 --enable-libopencv
    
  libavutil      54. 31.100 / 54. 31.100
    
  libavcodec     56. 60.100 / 56. 60.100
    
  libavformat    56. 40.101 / 56. 40.101
    
  libavdevice    56.  4.100 / 56.  4.100
    
  libavfilter     5. 40.101 /  5. 40.101
    
  libavresample   2.  1.  0 /  2.  1.  0
    
  libswscale      3.  1.101 /  3.  1.101
    
  libswresample   1.  2.101 /  1.  2.101
    
  libpostproc    53.  3.100 / 53.  3.100
    
[mp3 @ 0x22cf760] Format mp3 detected only with low score of 1, misdetection possible!
    
[mp3 @ 0x22cf760] Could not find codec parameters for stream 0 (Audio: mp3, 0 channels, s16p): unspecified frame size
    
Consider increasing the value for the 'analyzeduration' and 'probesize' options
    
live.mp3: could not find codec parameters
    
Input #0, mp3, from 'live.mp3':
    
  Duration: N/A, start: 0.000000, bitrate: N/A
    
    Stream #0:0: Audio: mp3, 0 channels, s16p
    
[mp3 @ 0x22d10a0] Skipping 0 bytes of junk at 18034.
    
Input #1, mp3, from 'mp3/test1.mp3':
    
  Metadata:
    
    title           : Nothing Else Matters [Official Music Video]
    
    artist          : Metallica
    
  Duration: 00:06:25.80, start: 0.025057, bitrate: 192 kb/s
    
    Stream #1:0: Audio: mp3, 44100 Hz, stereo, s16p, 192 kb/s
    
    Metadata:
    
      encoder         : Lavc56.14
    
[abuffer @ 0x22fa2c0] Value inf for parameter 'time_base' out of range [0 - 2.14748e+09]
    
    Last message repeated 3 times
    
[abuffer @ 0x22fa2c0] Error setting option time_base to value 1/0.
    
[graph 0 input from stream 0:0 @ 0x22fa3e0] Error applying options to the filter.
    
Error configuring complex filters.
    
Numerical result out of range

    How do I add the apad filter so that silence is added to the shortest audio ?

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