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• Pass double pointer parameter through P/Invoke when it is NULL

  1er août 2015, par BartMao

  I try to call FFMPEG method via P/Invoke

   int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options);

  So my P/Invoke method defined like this :

  [DllImport("avformat-55", EntryPoint = "avformat_find_stream_info", CallingConvention = CallingConvention.Cdecl)]
  
      public extern static int AVFormatFindStreamInfo(IntPtr ic, ref IntPtr options);

  and I need pass an IntPtr.Zero for the options, so I call this way :

  var p = IntPtr.Zero;
  
  rst = AVFormatFindStreamInfo(context, ref p);

  and an AccessViolation exception throws.

  But when I remove the ref from the signature, and directly pass an IntPtr.Zero to it, it actually works.
  I think the signature with ref keyword is the right way, but I don’t know why the exception throws.

• Anomalie #3016 : imagepalettetotruecolor, double définition (en php 5.5 beta)

  4 septembre 2013, par Maïeul Rouquette

  Il semblerait que cela n’ait pas été integré dans le tag 3.0.11 (cf http://core.spip.org/projects/spip/repository/entry/tags/spip-3.0.11/ecrire/inc/filtres_images_lib_mini.php).

  Il serait bon de l’intégrer ans le prochain tag. Voir http://contrib.spip.net/SPIP-3-0-11-what-else#forum470521

• swscale/swscale_unscaled : use 8 line alignment for planarCopyWrapper with dithering

  3 août, par Marton Balint

  swscale/swscale_unscaled : use 8 line alignment for planarCopyWrapper with dithering
  Dithering relies on a 8 line dithering table and the code always uses it from
  
  the beginning. So in order to make dithering independent from height of the
  
  slices used we must enforce a 8 line alignment.
  Fixes issue #20071.
  Signed-off-by : Marton Balint <cus@passwd.hu>
  

  • [DH] libswscale/swscale_unscaled.c