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• Revision dfb8fc917a : Use vreinterpret instead of casting neon vector types MSVC doesn't support cast

  4 mai 2014, par Martin Storsjo

  Changed Paths :
   Modify /vp8/common/arm/neon/mbloopfilter_neon.c

  
  
  Use vreinterpret instead of casting neon vector types

  MSVC doesn’t support casting neon vector types but requires using
  vreinterpret.

  Change-Id : Iece0bf5632567efd7f37f527abea38afeab4926d

• avcodec_decode_video2 returns positive number when got_picture_ptr is 0

  22 août 2017, par dafnahaktana

  According to the documentation : here, avcodec_decode_video2 should return 0 if no frame could be decompressed. The got_picture_ptr should also be set to zero if no frame could be decompressed.

  I ran this function on a h264 video and I got positive return value while the got_picture_ptr was set to 0. Maybe that the documentation is not updated ?

• lavd/v4l2 : do not fail when VIDIOC_ENUMSTD returns ENODATA

  18 août 2014, par Andre Wolokita

  lavd/v4l2 : do not fail when VIDIOC_ENUMSTD returns ENODATA
  As of September 14 2012, v4l_enumstd() will return ENODATA
  
  when a device’s std field is set to 0. That is, the device
  
  does not have a standard format. In order to properly
  
  handle this case, v4l2_set_parameters should catch the
  
  ENODATA code and break instead of failing.
  Below is the v4l2-core commit describing this change.
  >>commit a5338190efc7cfa8c99a6856342a77d21c9a05cf
  
  >>Author : Hans Verkuil <hans.verkuil@cisco.com>
  
  >>Date :   Fri Sep 14 06:45:43 2012 -0300
  
  >>
  
  >>    [media] v4l2-core : tvnorms may be 0 for a given input, handle that case
  
  >>
  
  >>    Currently the core code looks at tvnorms to see whether ENUMSTD
  
  >>    or G_PARM should be enabled. This is not a good check for drivers
  
  >>    that support the STD API on one input and the DV Timings API on another.
  
  >>    In that case tvnorms may be 0.
  
  >>    Instead check whether s_std is present (for ENUMSTD) or whether g_std or
  
  >>    current_norm is present for g_parm.
  
  >>    Also, in the enumstd core function return ENODATA if tvnorms is 0,
  
  >>    because in that case the current input does not support the STD API
  
  >>    and ENUMSTD should return ENODATA for that.
  
  >>
  
  >>    Signed-off-by : Hans Verkuil <hans.verkuil@cisco.com>
  
  >>    Reviewed-by : Sakari Ailus <sakari.ailus@iki.fi>
  
  >>    Signed-off-by : Mauro Carvalho Chehab <mchehab@redhat.com>
  

  • [DH] libavdevice/v4l2.c