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• h264 : Add stream constraint values to the common header

  23 juin 2017, par Mark Thompson

  h264: Add stream constraint values to the common header
  
  With comments describing the derivation of each value.
  

  • [DBH] libavcodec/h264.h

• hevc : Validate the number of long term reference pictures

  23 juin 2017, par Mark Thompson

  hevc: Validate the number of long term reference pictures
  
  This would overflow if the stream contained a value greater than the
  maximum allowed by the standard (32).
  

  • [DBH] libavcodec/hevc_ps.c

• hevc : Improve stream constraint values in common header

  23 juin 2017, par Mark Thompson

  hevc: Improve stream constraint values in common header
  
  Add comments to describe the sources of the constraint values expressed here,
  and add some more related values which will be used in following patches.
  
  Fix the incorrect values for SPS and PPS count (they are not the same as those
  used for H.264), and remove HEVC_MAX_CU_SIZE because it is not used anywhere.
  

  • [DBH] libavcodec/hevc.h
  • [DBH] libavcodec/hevc_ps.c
  • [DBH] libavcodec/hevc_ps.h
  • [DBH] libavformat/hevc.c

• hwframe : Allow hwaccel frame allocators to align surface sizes

  22 juin 2017, par Anton Khirnov

  hwframe: Allow hwaccel frame allocators to align surface sizes
  
  Hardware accelerated decoding generally uses AVHWFramesContext for pool
  allocation of hardware surfaces. These are setup to allocate surfaces
  aligned to hardware and hwaccel API requirements. Due to the
  architecture, av_hwframe_get_buffer() will return AVFrames with
  the dimensions set to the aligned sizes.
  
  This causes some decoders (like hevc) return these aligned size as
  final frame size, instead of cropping them to the video's actual
  dimensions. To make sure this doesn't happen, crop the frame to the
  size the decoder expects when ff_get_buffer() is called.
  
  Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
  

  • [DBH] libavcodec/decode.c

• dxva : verbose-log decoder GUID list

  22 juin 2017, par wm4

  dxva: verbose-log decoder GUID list
  
  Helpful for debugging.
  
  Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
  

  • [DBH] libavcodec/dxva2.c