[mythtv-commits] [MythTV/mythtv] 0b0d7d: VideoToolBox: Add untested P010 support

[Mark Kendall]

  Branch: refs/heads/devel/2019-render
  Home:   https://github.com/MythTV/mythtv
  Commit: 0b0d7d2a26dd1a9300425a77a579dfeed88faf00
      https://github.com/MythTV/mythtv/commit/0b0d7d2a26dd1a9300425a77a579dfeed88faf00
  Author: Mark Kendall <mark.kendall at gmail.com>
  Date:   2019-06-22 (Sat, 22 Jun 2019)

  Changed paths:
    M mythtv/libs/libmythtv/mythvtbinterop.cpp

  Log Message:
  -----------
  VideoToolBox: Add untested P010 support

- as noted UNTESTED but looks good
- P010 support in FFmpeg is not yet merged into MythTV version


  Commit: af37064690dfcb3712f044a272584b5d88ce3541
      https://github.com/MythTV/mythtv/commit/af37064690dfcb3712f044a272584b5d88ce3541
  Author: Mark Kendall <mark.kendall at gmail.com>
  Date:   2019-06-22 (Sat, 22 Jun 2019)

  Changed paths:
    M mythtv/libs/libmythtv/decoders/avformatdecoder.cpp
    M mythtv/libs/libmythtv/decoders/avformatdecoder.h
    M mythtv/libs/libmythtv/decoders/nuppeldecoder.cpp
    M mythtv/libs/libmythtv/mpeg/H264Parser.cpp
    M mythtv/libs/libmythtv/mpeg/H264Parser.h
    M mythtv/libs/libmythtv/mythplayer.cpp
    M mythtv/libs/libmythtv/mythplayer.h
    M mythtv/libs/libmythtv/mythvaapicontext.cpp
    M mythtv/libs/libmythtv/videobuffers.cpp
    M mythtv/libs/libmythtv/videobuffers.h
    M mythtv/libs/libmythtv/videoout_null.cpp
    M mythtv/libs/libmythtv/videoout_null.h
    M mythtv/libs/libmythtv/videoout_opengl.cpp
    M mythtv/libs/libmythtv/videoout_opengl.h
    M mythtv/libs/libmythtv/videooutbase.cpp
    M mythtv/libs/libmythtv/videooutbase.h

  Log Message:
  -----------
  VideoBuffers: Optimise number of buffers for reference frames in use

- parse the number of reference frames from the AVCodecContext when
initialising the video stream and pass the value through to the
VideoOutput classes via the player.
- use the H.264 parser to check the number of ref frames (but don't use
it to trigger a stream change)
- use the number of ref frames to determine the number of video buffers.
Only currently impacts VAAPI and software decode.
- HEVC, VP8 and VP9 default to their maximum values (i.e. they are not
parsed - not even sure they can be)
- otherwise the default is 2

This significantly reduces the number of video buffers for a lot of
content - and hence reduces memory consumption.


Compare: https://github.com/MythTV/mythtv/compare/a3b9538eceda...af37064690df