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Les articles publiés sur le site

• vaapi_decode : use the correct logging context

  19 décembre 2016, par Anton Khirnov

  vaapi_decode: use the correct logging context
  

  • [DBH] libavcodec/vaapi_decode.c

• hevcdec : do not set decoder-global SPS prematurely

  18 décembre 2016, par Anton Khirnov

  hevcdec: do not set decoder-global SPS prematurely
  
  It should only be set after the decoder state has been fully initialized
  for using that SPS.
  Fixes possible invalid reads on get_format() failure.
  
  CC: libav-stable@libav.org
  

  • [DBH] libavcodec/hevcdec.c

• h264dec : make sure to only end a field if it has been started

  18 décembre 2016, par Anton Khirnov

  h264dec: make sure to only end a field if it has been started
  
  Calling ff_h264_field_end() when the per-field state is not properly
  initialized leads to all kinds of undefined behaviour.
  
  CC: libav-stable@libav.org
  Bug-Id: 977 978 992
  

  • [DBH] libavcodec/h264_picture.c
  • [DBH] libavcodec/h264_slice.c
  • [DBH] libavcodec/h264dec.c
  • [DBH] libavcodec/h264dec.h

• build : Store library version numbers in .version files

  17 décembre 2016, par Diego Biurrun

  build: Store library version numbers in .version files
  
  This moves work from the configure to the Make stage where it can
  be parallelized and ensures that shared libraries are built with
  the right version number in the filename.
  

  • [DBH] Makefile
  • [DBH] avbuild/common.mak
  • [DBH] avbuild/library.mak
  • [DBH] avbuild/libversion.sh
  • [DBH] configure

• mpeg12dec : move setting first_field to mpeg_field_start()

  17 décembre 2016, par Anton Khirnov

  mpeg12dec: move setting first_field to mpeg_field_start()
  
  For field picture, the first_field is set based on its previous value.
  Before this commit, first_field is set when reading the picture
  coding extension. However, in corrupted files there may be multiple
  picture coding extension headers, so the final value of first_field that
  is actually used during decoding can be wrong. That can lead to various
  undefined behaviour, like predicting from a non-existing field.
  
  Fix this problem, by setting first_field in mpeg_field_start(), which
  should be called exactly once per field.
  
  CC: libav-stable@libav.org
  Bug-ID: 999
  

  • [DBH] libavcodec/mpeg12dec.c