1. 22 Aug, 2016 1 commit
  2. 16 Aug, 2016 1 commit
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  6. 13 Mar, 2016 2 commits
  7. 23 Feb, 2016 1 commit
    • Anton Khirnov's avatar
      lavf: replace AVStream.codec with AVStream.codecpar · 9200514a
      Anton Khirnov authored
      Currently, AVStream contains an embedded AVCodecContext instance, which
      is used by demuxers to export stream parameters to the caller and by
      muxers to receive stream parameters from the caller. It is also used
      internally as the codec context that is passed to parsers.
      
      In addition, it is also widely used by the callers as the decoding (when
      demuxer) or encoding (when muxing) context, though this has been
      officially discouraged since Libav 11.
      
      There are multiple important problems with this approach:
          - the fields in AVCodecContext are in general one of
              * stream parameters
              * codec options
              * codec state
            However, it's not clear which ones are which. It is consequently
            unclear which fields are a demuxer allowed to set or a muxer allowed to
            read. This leads to erratic behaviour depending on whether decoding or
            encoding is being performed or not (and whether it uses the AVStream
            embedded codec context).
          - various synchronization issues arising from the fact that the same
            context is used by several different APIs (muxers/demuxers,
            parsers, bitstream filters and encoders/decoders) simultaneously, with
            there being no clear rules for who can modify what and the different
            processes being typically delayed with respect to each other.
          - avformat_find_stream_info() making it necessary to support opening
            and closing a single codec context multiple times, thus
            complicating the semantics of freeing various allocated objects in the
            codec context.
      
      Those problems are resolved by replacing the AVStream embedded codec
      context with a newly added AVCodecParameters instance, which stores only
      the stream parameters exported by the demuxers or read by the muxers.
      9200514a
  8. 21 Feb, 2016 1 commit
  9. 18 Feb, 2016 1 commit
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  11. 31 Jan, 2016 1 commit
  12. 29 Jan, 2016 1 commit
  13. 22 Jan, 2016 2 commits
  14. 21 Jan, 2016 1 commit
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  16. 13 Oct, 2015 2 commits
  17. 02 Oct, 2015 2 commits
  18. 31 Aug, 2015 1 commit
  19. 07 Jul, 2015 2 commits
    • Stian Selnes's avatar
      h261: Signal freeze picture release for intra frames · 02b7c630
      Stian Selnes authored
      Freeze picture release should be set to 1 when we're responding to a
      fast update request. For simplicity we set it for all intra frames,
      including those that starts a GOP.
      
      Fixes issue where Tandberg MXP1700 does not recover from packet loss
      state since it's waiting for the freeze picture relase indication.
      
      Bug-Id: 873
      CC: libav-stable@libav.org
      Signed-off-by: 's avatarLuca Barbato <lu_zero@gentoo.org>
      02b7c630
    • Stian Selnes's avatar
      h261: Set 'still image mode off' in picture header · dc1de0b9
      Stian Selnes authored
      Ref H.261 recommendation section 4.2.1.3, setting the still image flag
      to 1 disables still image mode. Some decoders require this in order to
      decode the bitstream as normal video.
      
      Fixes H.261 calls to Cisco E20.
      
      Also, reserved (aka spare) bits should be set to 1 unless specified
      otherwise.
      
      Bug-Id: 872
      CC: libav-stable@libav.org
      Signed-off-by: 's avatarLuca Barbato <lu_zero@gentoo.org>
      dc1de0b9
  20. 30 Jun, 2015 2 commits
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  26. 09 Jun, 2015 1 commit
  27. 10 May, 2015 2 commits