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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 (...)

  • Contribute to documentation

    13 avril 2011

    Documentation is vital to the development of improved technical capabilities.
    MediaSPIP welcomes documentation by users as well as developers - including : critique of existing features and functions articles contributed by developers, administrators, content producers and editors screenshots to illustrate the above translations of existing documentation into other languages
    To contribute, register to the project users’ mailing (...)

  • Selection of projects using MediaSPIP

    2 mai 2011, par

    The examples below are representative elements of MediaSPIP specific uses for specific projects.
    MediaSPIP farm @ Infini
    The non profit organizationInfini develops hospitality activities, internet access point, training, realizing innovative projects in the field of information and communication technologies and Communication, and hosting of websites. It plays a unique and prominent role in the Brest (France) area, at the national level, among the half-dozen such association. Its members (...)

Sur d’autres sites (6446)

  • ffmpeg : Print sub2video : rectangle coordinates in case of overflows

    13 août 2015, par Michael Niedermayer
    ffmpeg : Print sub2video : rectangle coordinates in case of overflows

    Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
    • [DH] ffmpeg.c

  • aacdec : add default case in channel layout

    30 octobre 2014, par Vittorio Giovara
    aacdec : add default case in channel layout

    Bug-Id : CID 732291
    • [DBH] libavcodec/aacdec.c

  • armv6 : Accelerate ff_imdct_half for general case (mdct_bits != 6)

    11 juillet 2014, par Ben Avison
    armv6 : Accelerate ff_imdct_half for general case (mdct_bits != 6)

    The previous implementation targeted DTS Coherent Acoustics, which only
    
requires mdct_bits == 6. This relatively small size lent itself to
    
unrolling the loops a small number of times, and encoding offsets
    
calculated at assembly time within the load/store instructions of each
    
iteration.
    

    In the more general case (codecs such as AAC and AC3) much larger arrays
    
are used - mdct_bits == [8, 9, 11]. The old method does not scale for
    
these cases, so more integer registers are used with non-unrolled versions
    
of the loops (and with some stack spillage). The postrotation filter loop
    
is still unrolled by a factor of 2 to permit the double-buffering of some
    
VFP registers to facilitate overlap of neighbouring iterations.
    

    I benchmarked the result by measuring the number of gperftools samples
    
that hit anywhere in the AAC decoder (starting from aac_decode_frame())
    
or specifically in ff_imdct_half_c / ff_imdct_half_vfp, for the same
    
example AAC stream :
    

                      Before          After
    
                  Mean   StdDev   Mean   StdDev  Confidence  Change
    
aac_decode_frame  2368.1 35.8     2117.2 35.3    100.0%      +11.8%
    
ff_imdct_half_*   457.5  22.4     251.2  16.2    100.0%      +82.1%
    

    Signed-off-by : Martin Storsjö <martin@martin.st>
    • [DBH] libavcodec/arm/mdct_vfp.S

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