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• avcodec/dcaenc : Create encoder-adapted tables

  5 septembre 2022, par Andreas Rheinhardt

  avcodec/dcaenc : Create encoder-adapted tables
  Up until now, the encoder used the same tables that the decoder
  
  uses to create its VLCs. These have the downside of requiring
  
  the encoder to offset the tables at runtime as well as having
  
  to read from separate tables for the length as well as the code
  
  of the symbol to encode. The former are uint8_t, the latter uint16_t,
  
  so using a joint table would require padding, but this doesn't
  
  matter when these tables are generated at runtime, because they
  
  live in the .bss segment.
  Also move these init functions as well as the functions that
  
  actually use them to dcaenc.c, because they are encoder-specific.
  
  This also allows to remove an inclusion of PutBitContext from
  
  dcahuff.h (and indirectly from all dca-decoder files).
  Signed-off-by : Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
  

  • [DH] libavcodec/dcaenc.c
  • [DH] libavcodec/dcahuff.c
  • [DH] libavcodec/dcahuff.h

• Anomalie #4820 (Nouveau) : Double chargement des css

  10 juin 2021, par JLuc -

  Sur plusieurs sites SPIP, l’inspecteur de Firefox (de même que des outils d’analyse de la cascade des chargements http) révèle que la css compilée compactée est chargée 2 fois. Le fichier har joint présente la cascade de spip.net où ça se produit aussi.

  Serait ce pas dû à compresseur_ecrire_balise_css_dist() qui insère
  

  <span class="CodeRay">    <span class="local-variable">$comments</span> .= <span class="string"><span class="delimiter">"</span><span class="content">span><span class="delimiter">"</span></span> . (<span class="local-variable">$media</span> ? <span class="string"><span class="delimiter">"</span><span class="content"> media='</span><span class="local-variable">$media</span><span class="content">'</span><span class="delimiter">"</span></span> : <span class="string"><span class="delimiter">"</span><span class="delimiter">"</span></span>) . <span class="string"><span class="delimiter">"</span><span class="content"> href='</span><span class="local-variable">$src</span><span class="content">' type='text/css' /></span><span class="delimiter">"</span></span>;
      <span class="comment">// Envoyer aussi un entete http pour demarer le chargement de la CSS plus tot</span>
      <span class="comment">// Link: /href.here/to/resource.html>;rel="stylesheet prefetch" </span>
      <span class="local-variable">$comments</span> .= <span class="string"><span class="delimiter">"</span><span class="content">&lt;</span><span class="delimiter">"</span></span> . <span class="string"><span class="delimiter">"</span><span class="content">?php header('Link: &lt;' . url_de_base() . (_DIR_RACINE ? _DIR_RESTREINT_ABS : '') . '</span><span class="local-variable">$src</span><span class="content">>;rel=</span><span class="char">\"</span><span class="content">stylesheet prefetch</span><span class="char">\"</span><span class="content">'); ?></span><span class="delimiter">"</span></span>;
  </span></span>
  Télécharger

• Best approach to set up live video streaming between HoloLens2 and Desktop PC

  19 mai 2021, par SilverLife

  First of all, I am sorry for this question. I know its more asking for an advice than asking about any coding problems. Unfortunately I don´t know where else I should ask such a question, so please be patient. (I am open for any recommendations)

  


  Since a while I am searching for a promising approach to stream live videos from a desktop PC via network to my HoloLens 2 unity application. The video transfer should be within a encapsulated network without internet access. Therefore a direct connection between both devices without any signaling- or web-servers would be desirable, if possible. For now we are thinking about sending the stream via ffmpeg and receiving it somehow in the unity application.
So far I came across MixedReality-WebRTC and ffmpegInterop. Unfortunately as I read, WebRTC needs at least some kind of signaling server which manages the connection between the clients. ffmpegInterop seems to be really difficult to integrate into unity.

  


  I am completely new to the topic of low latency video streaming and a bit lost in this complex environment. Can anybody give me an advice about a promising and extendable way to receive a low latency video stream ?