[mythtv-commits] mythtv/master commit: c9c2545ac by John Poet (jpoet)

[MythTV]

      Author:  John Poet <jpoet at mythtv.org>
 Change Date:  2011-02-06T11:09:19-08:00
   Push Date:  2011/02/06 11:25:00 -0800
  Repository:  mythtv
      Branch:  master
New Revision:  c9c2545ac67584af5e8d705486bbb294f3e7da50
   Changeset:  https://github.com/MythTV/mythtv/commit/c9c2545ac

Log:

Fix BBC frame detection.

Patch is by Paul Gardiner with some very minor tweaks by me.

Paul's comments:

Remove all assumptions of alignment between NALs and the packets passed into
the parser.

Prior to parsing the bodies of the various NALs, remove any
emulation-prevention bytes. This should improve results for all H264, not
just BBC HD.

Update the code for reading profile>=100 versions of the SPS.  The
scaling-list-present flag was being read, but not the lists themselves, and
since the log2_max_frame_num_minus4 field occurs after, frame numbers were
not being read correctly from slices. That was probably the biggest
contributor to BBC HD problems.

Fixes #9410

Modified:

   mythtv/libs/libmythtv/mpeg/H264Parser.cpp
   mythtv/libs/libmythtv/mpeg/H264Parser.h