tree 05b7171c1bf7cbc81f12de8712895a6f2010a4d5
parent 39c0f63e226bdb2453b5656aebfe9abd321ccb3c
author David Barker <david.barker@argondesign.com> 1523969296 +0100
committer David Barker <david.barker@argondesign.com> 1524047930 +0100

Refactor OBU header+size parsing code

av1_decode_frame_from_obus() currently has a block of code to handle
OBU headers and to correctly derive the payload size in both the
annexb and non-annexb cases.

This patch moves that code into its own function, so that it can be
shared with other places which do OBU parsing (in particular,
decoder_peek_si_internal()).

Along the way, tighten up the error detection, so that we're more
likely to detect cases where the input buffer is too short.

BUG=aomedia:1794

Change-Id: If16fe25b3a044743d15f44b9c91c2f3ce7c49df2