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  • La file d’attente de SPIPmotion

    28 novembre 2010, par

    Une file d’attente stockée dans la base de donnée
    Lors de son installation, SPIPmotion crée une nouvelle table dans la base de donnée intitulée spip_spipmotion_attentes.
    Cette nouvelle table est constituée des champs suivants : id_spipmotion_attente, l’identifiant numérique unique de la tâche à traiter ; id_document, l’identifiant numérique du document original à encoder ; id_objet l’identifiant unique de l’objet auquel le document encodé devra être attaché automatiquement ; objet, le type d’objet auquel (...)

  • Les tâches Cron régulières de la ferme

    1er décembre 2010, par

    La gestion de la ferme passe par l’exécution à intervalle régulier de plusieurs tâches répétitives dites Cron.
    Le super Cron (gestion_mutu_super_cron)
    Cette tâche, planifiée chaque minute, a pour simple effet d’appeler le Cron de l’ensemble des instances de la mutualisation régulièrement. Couplée avec un Cron système sur le site central de la mutualisation, cela permet de simplement générer des visites régulières sur les différents sites et éviter que les tâches des sites peu visités soient trop (...)

  • Installation en mode ferme

    4 février 2011, par

    Le mode ferme permet d’héberger plusieurs sites de type MediaSPIP en n’installant qu’une seule fois son noyau fonctionnel.
    C’est la méthode que nous utilisons sur cette même plateforme.
    L’utilisation en mode ferme nécessite de connaïtre un peu le mécanisme de SPIP contrairement à la version standalone qui ne nécessite pas réellement de connaissances spécifique puisque l’espace privé habituel de SPIP n’est plus utilisé.
    Dans un premier temps, vous devez avoir installé les mêmes fichiers que l’installation (...)

Sur d’autres sites (4856)

  • Linking error stdc++

    11 mars 2016, par Per M.

    Why am I having these linking errors ?

    Here is a short sample of link errors, there are hundreds similar :

    /tmp/main-NtNkRQ.o : In function

    __cxx_global_var_init':
     /home/go/NetBeansProjects/Arbete_216/Ajourwork/Components/TheRealDeal/GUI/../../../Components/TheRealDeal/GUI/main.cpp:(.text+0x10):
     undefined reference to

    std::ios_base::Init::Init()’
    /home/go/NetBeansProjects/Arbete_216/Ajourwork/Components/TheRealDeal/GUI/../../../Components/TheRealDeal/GUI/main.cpp :(.text+0x17) :
    undefined reference to

    std::ios_base::Init::~Init()'
     /tmp/main-NtNkRQ.o: In function

    main’ :
    /home/go/NetBeansProjects/Arbete_216/Ajourwork/Components/TheRealDeal/GUI/../../../Components/TheRealDeal/GUI/main.cpp:123 :
    undefined reference to

    __cxa_begin_catch'
     /home/go/NetBeansProjects/Arbete_216/Ajourwork/Components/TheRealDeal/GUI/../../../Components/TheRealDeal/GUI/main.cpp:127:
     undefined reference to

    __cxa_end_catch’
    /home/go/NetBeansProjects/Arbete_216/Ajourwork/Components/TheRealDeal/GUI/../../../Components/TheRealDeal/GUI/main.cpp:127 :
    undefined reference to

    __cxa_end_catch'
     /home/go/NetBeansProjects/Arbete_216/Ajourwork/Components/TheRealDeal/GUI/../../../Components/TheRealDeal/GUI/main.cpp:123:
     undefined reference to

    std::terminate()’
    /tmp/main-NtNkRQ.o :(.data.rel.ro._ZTI26go_s_module_init_exception[_ZTI26go_s_module_init_exception]+0x0) :
    undefined reference to

    vtable for __cxxabiv1::__class_type_info'
     /tmp/main-NtNkRQ.o:(.data.DW.ref.__gxx_personality_v0[DW.ref.__gxx_personality_v0]+0x0):
     undefined reference to

    __gxx_personality_v0’
    /home/go/NetBeansProjects/Arbete_216/Ajourwork/Components/TheRealDeal/GUI/linuxobj//GO_C_Align.o :
    In function

    GO_C_Align':
     /home/go/NetBeansProjects/Arbete_216/Ajourwork/Utilities/Image/Align/GO_C_Align.cpp:35:
     undefined reference to

    std::terminate()’
    /home/go/NetBeansProjects/Arbete_216/Ajourwork/Components/TheRealDeal/GUI/linuxobj//GO_C_Align.o :
    In function

    ~GO_C_Align':
     /home/go/NetBeansProjects/Arbete_216/Ajourwork/Utilities/Image/Align/GO_C_Align.cpp:44:
     undefined reference to

    std::terminate()’
    /home/go/NetBeansProjects/Arbete_216/Ajourwork/Components/TheRealDeal/GUI/linuxobj//GO_C_Align.o :
    In function

    GO_C_Align::de_init()':
     /home/go/NetBeansProjects/Arbete_216/Ajourwork/Utilities/Image/Align/GO_C_Align.cpp:187:
     undefined reference to

    operator delete’
    /home/go/NetBeansProjects/Arbete_216/Ajourwork/Components/TheRealDeal/GUI/linuxobj//GO_C_Align.o :
    In function

    GO_C_Align::init(int, int, GO_C_BufferManager*)':
     /home/go/NetBeansProjects/Arbete_216/Ajourwork/Utilities/Image/Align/GO_C_Align.cpp:121:
     undefined reference to

    operator new[](unsigned long)’

    I am on Debian 7, using Clang compiler. The code is built using a makefile system, the following compiler flags is used

    CXXFLAGS = -g -I /opt/intel/composer_xe_2015.1.133/ipp/include/ -Wno-deprecated -D_GNU_SOURCE  -D_REENTRANT -D__STDC_CONSTANT_MACROS -I/usr/include/postgresql/ -I/usr/local/Qt/5.2.1/gcc_64/include/QtX11Extras/ -I/usr/local/Qt/5.2.1/gcc_64/include/QtWidgets/ -I/usr/local/Qt/5.2.1/gcc_64/include/ -I/usr/local/Qt/5.2.1/gcc_64/include/QtGui/ -fPIC -fPIE -I/home/go/ffmpeg_build/include/ -I/usr/local/Qt/5.2.1/gcc_64/include/QtCore/  -fPIC -fPIE -I/home/go/ffmpeg_build/include/libavcodec -I/home/go/ffmpeg_build/include/libavformat/
    

    

    
 $(CXX) -o xxx_GUI $(MAIN_FILE) $(TARGETROOT)/*.o  $(TARGETROOT)/*.a $(DEFINE_FLAGS) $(INCLUDE_FLAGS) $(CXXFLAGS) -lpq -lippi -lipps -lippcore -lpthread -lgcrypt -lippvm -lippcv -lippcc -L/opt/intel/composer_xe_2015.1.133/ipp/lib/intel64 -L/usr/local/Qt/5.2.1/gcc_64/include/QtWidgets/ -L/usr/X11R6/lib/  -lXv -lX11 -lXext -ltar

    If I add -lstdc++ to my compiler options, FFmpeg gives link errors instead. I have wrapped FFmpeg includes in extern "C" as I have seen elsewhere on this site. It doesn’t help. But I don’t think that is the problem here.

    FFmpeg is compiled as dynamic libs from source. (I had the same behavior when I linked static libs.)

    I have checked the FFmpeg libs with ldd and the dependencies is in place. I have checked for 32/64 mix-ups but it all seems to be 64 as it should be.

    root@antec :/usr/local/lib# file libavcodec.so.57.27.101
    libavcodec.so.57.27.101 : ELF 64-bit LSB shared object, x86-64, version 1 (SYSV), dynamically linked, BuildID[sha1]=0x6bf103d9a0531802fdcc608a8032a77d5b89b898, stripped
    root@antec :/usr/local/lib# file /lib/x86_64-linux-gnu/libc.so.6
    /lib/x86_64-linux-gnu/libc.so.6 : symbolic link to `libc-2.13.so’
    root@antec :/usr/local/lib# file /lib/x86_64-linux-gnu/libc-2.13.so
    /lib/x86_64-linux-gnu/libc-2.13.so : ELF 64-bit LSB shared object, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), BuildID[sha1]=0xb5053aa2420700afc9687ab357a8d5d89fcb1bd0, for GNU/Linux 2.6.26, stripped

    The example contained in FFmpeg source compiled and linked fine.

    Is there any other external part that could give these errors ? C++11 ? Any indication could help. Thanks.

  • FFMPEG - 4K HDR - MPEG - BIG FILE convert

    8 mars 2018, par Ian Lodanko

    I would like to ask how through ffmpeg to achieve the smallest file size and yet keep the best quality [LIKE Youtube convert].

    Currently used :

    ffmpeg -i "/home/sampe_4K_HDR.mkv" -map 0:00 -c:v libx264 -preset ultrafast -b:v 66718k -pix_fmt yuv420p10le -x264-params "colorprim=bt2020:transfer=smpte2084:colormatrix=bt2020nc" -crf 18 -c:a libfdk_aac -profile:v baseline -level 3.0 "/home/sampe_4K_HDR.mp4"

    But the size of the video after conversion is very large, I would like to preserve as much as possible the quality of the original video and get the smallest possible video size.

    Could you please advise ? Write some examples of how to get better with smaller sizes ? Thank you in advance and I apologize for my English in advance.

  • FFMpeg on Android, undefined references to libavcodec functions, although it is listed on command line

    1er juin 2016, par dimsuz

    I have a problem with unresolved references to ffmpeg’s libavcodec functions, so far failed to find the answer in other places (including my mind) :)

    Let me describe my setup - it takes space, but is really basic, it might be that I’m failing to see some error...

    I built an FFMPeg with ndk r5 toolchain, ffmpeg port I got from http://bambuser.com/opensource (as recommended in other questions here). It built fine, so I put several static libraries in my project like this :

    <project>/jni/bambuser_ffmpeg/libavcodec.a
    
<project>/jni/bambuser_ffmpeg/libavformat.a
    
<project>/jni/bambuser_ffmpeg/libavcore.a
    
<project>/jni/bambuser_ffmpeg/libavutil.a
    
</project></project></project></project>

    Next, I created an Android.mk in bambuser_ffmpeg folder to list these libs as a prebuilt ones :

    LOCAL_PATH := $(call my-dir)
    

    
include $(CLEAR_VARS)
    
LOCAL_MODULE := bambuser-libavcore
    
LOCAL_SRC_FILES := libavcore.a
    
include $(PREBUILT_STATIC_LIBRARY)
    

    
include $(CLEAR_VARS)
    
LOCAL_MODULE := bambuser-libavformat
    
LOCAL_SRC_FILES := libavformat.a
    
include $(PREBUILT_STATIC_LIBRARY)
    

    
(same for other two libs)

    Next, I have another module which references these libs in its Android.mk, sets up include paths, etc :

    LOCAL_PATH := $(call my-dir)
    

    
include $(CLEAR_VARS)
    

    
LOCAL_MODULE := ffmpegtest
    
LOCAL_STATIC_LIBRARIES := bambuser-libavcodec bambuser-libavcore bambuser-libavformat bambuser-libavutil
    
LOCAL_SRC_FILES := ffmpeg_test.cpp
    
LOCAL_C_INCLUDES := $(LOCAL_PATH)/../bambuser_ffmpeg/include
    
LOCAL_LDLIBS    := -llog -lz
    

    
include $(BUILD_SHARED_LIBRARY)

    And finally I have my ffmpeg_test.cpp which is really basic, like this :

    #include 
    

    
extern "C" {
    
#include <libavcodec></libavcodec>avcodec.h>
    
#include <libavformat></libavformat>avformat.h>
    
}
    

    
extern "C" {
    
    JNIEXPORT jint JNICALL Java_com_the7art_ffmpegtest_PaintThread_testFFMpeg(JNIEnv* env, jobject obj, jstring fileName);
    
}
    

    
JNIEXPORT jint JNICALL Java_com_the7art_ffmpegtest_PaintThread_testFFMpeg(JNIEnv* env, jobject obj, jstring fileName)
    
{
    
    av_register_all();
    
    return 0;
    
}

    When I run ndk-build, it compiles fine, but when linking it prints an unresolved reference to almost every function in libavcodec. Looks like only this lib’s functions are failing to be located :

    /home/dimka/src/mobile/android/ffmpegtest/obj/local/armeabi/libavformat.a(allformats.o) :
    In function

    av_register_all':
     /home/dimka/work/suzy/tmp/ffmpeg-android/ffmpeg/libavformat/allformats.c:47:
     undefined reference to
     

    avcodec_register_all’
    /home/dimka/src/mobile/android/ffmpegtest/obj/local/armeabi/libavformat.a(utils.o) :
    In function

    parse_frame_rate':
     /home/dimka/work/suzy/tmp/ffmpeg-android/ffmpeg/libavformat/utils.c:3240:
     undefined reference to
     

    av_parse_video_rate’
    /home/dimka/src/mobile/android/ffmpegtest/obj/local/armeabi/libavformat.a(utils.o) :
    In function

    parse_image_size':
     /home/dimka/work/suzy/tmp/ffmpeg-android/ffmpeg/libavformat/utils.c:3234:
     undefined reference to
     

    av_parse_video_size’
    /home/dimka/src/mobile/android/ffmpegtest/obj/local/armeabi/libavformat.a(utils.o) :
    In function

    flush_packet_queue':
     /home/dimka/work/suzy/tmp/ffmpeg-android/ffmpeg/libavformat/utils.c:1277:
     undefined reference to
     

    av_free_packet’
    /home/dimka/work/suzy/tmp/ffmpeg-android/ffmpeg/libavformat/utils.c:1283 :
    undefined reference to

    av_free_packet'
     /home/dimka/src/mobile/android/ffmpegtest/obj/local/armeabi/libavformat.a(utils.o):
     In function

    get_audio_frame_size’ :
    /home/dimka/work/suzy/tmp/ffmpeg-android/ffmpeg/libavformat/utils.c:766 :
    undefined reference to

    av_get_bits_per_sample'
     /home/dimka/src/mobile/android/ffmpegtest/obj/local/armeabi/libavformat.a(utils.o):
     In function
     

    ff_interleave_add_packet’ :
    /home/dimka/work/suzy/tmp/ffmpeg-android/ffmpeg/libavformat/utils.c:2909 :
    undefined reference to `av_dup_packet’

    and so on...

    I fail to figure why this is happening. I tried running ndk-build V=1 to check the actual linking command, and libavcodec is sitting there perfectly right, like it should. All other ffmpeg libs are there too.

    Any hints ?

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