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Autres articles (36)

  • Les autorisations surchargées par les plugins

    27 avril 2010, par

    Mediaspip core
    autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs

  • Supporting all media types

    13 avril 2011, par

    Unlike most software and media-sharing platforms, MediaSPIP aims to manage as many different media types as possible. The following are just a few examples from an ever-expanding list of supported formats : images : png, gif, jpg, bmp and more audio : MP3, Ogg, Wav and more video : AVI, MP4, OGV, mpg, mov, wmv and more text, code and other data : OpenOffice, Microsoft Office (Word, PowerPoint, Excel), web (html, CSS), LaTeX, Google Earth and (...)

  • Support de tous types de médias

    10 avril 2011

    Contrairement à beaucoup de logiciels et autres plate-formes modernes de partage de documents, MediaSPIP a l’ambition de gérer un maximum de formats de documents différents qu’ils soient de type : images (png, gif, jpg, bmp et autres...) ; audio (MP3, Ogg, Wav et autres...) ; vidéo (Avi, MP4, Ogv, mpg, mov, wmv et autres...) ; contenu textuel, code ou autres (open office, microsoft office (tableur, présentation), web (html, css), LaTeX, Google Earth) (...)

Sur d’autres sites (6866)

  • Why use sysconf(_SC_NPROCESSORS_CONF) to get the number of CPU cores in x264 ?

    5 novembre 2017, par bknieven

    I find x264 use sysconf(_SC_NPROCESSORS_CONF) instead of sysconf(SC_NPROCESSORS_ONLN) to get the number of CPU cores.

    Here is the code snippet in x264/common/cpu.c :

    ...
    
#ifdef __ANDROID__
    
    // Android NDK does not expose sched_getaffinity
    
    return sysconf( _SC_NPROCESSORS_CONF );
    
#else
    
    ...
    
....

    And I find the difference between _SC_NPROCESSORS_CONF and _SC_NPROCESSORS_ONLN in this manual :

    sysconf (_SC_NPROCESSORS_CONF) which returns the number of processors
    the operating system configured. But it might be possible for the
    operating system to disable individual processors and so the call
    sysconf (_SC_NPROCESSORS_ONLN) returns the number of processors which
    are currently online (i.e., available).

    I have two questions :

    1. What is the difference between "the number of processors the operating system configured" and "the number of processors which are currently online" ?
    2. Why x264 use _SC_NPROCESSORS_CONF in Android to get the number of CPU cores ?

  • avcodec/v4l2_m2m_dec : remove redundant packet and fix double free

    16 juillet 2020, par Andriy Gelman
    avcodec/v4l2_m2m_dec : remove redundant packet and fix double free

    v4l2_receive_frame() uses two packets s->buf_pkt and avpkt. If avpkt
    
cannot be enqueued, the packet is buffered in s->buf_pkt and enqueued in
    
the next call. Currently the ownership transfer between the two packets
    
is not properly handled. A double free occurs if
    
ff_v4l2_context_enqueue_packet() returns EAGAIN and v4l2_try_start
    
returns EINVAL.
    

    In fact, having two AVPackets is not needed and everything can be
    
handled by s->buf_pkt.
    

    This commit removes the local avpkt from v4l2_receive_frame(), meaning
    
that the ownership transfer doesn't need to be handled and the double
    
free is fixed.
    

    Signed-off-by : Andriy Gelman <andriy.gelman@gmail.com>
    • [DH] libavcodec/v4l2_m2m_dec.c

  • avformat/avformat : Update av_read_frame() documentation

    1er décembre 2019, par Andreas Rheinhardt
    avformat/avformat : Update av_read_frame() documentation

    This commit updates the documentation of av_read_frame() to match its
    
actual behaviour in several ways :
    

    1. On success, av_read_frame() always returns refcounted packets.
    
2. It can handle uninitialized packets.
    
3. On error, it always returns blank packets.
    

    This will allow callers to not initialize or unref unnecessarily.
    

    Signed-off-by : Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
    • [DH] doc/APIchanges
    • [DH] libavformat/avformat.h

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