tree d774cb5e17731d3c6cd5897c993017d6cf3df7d6
parent 7600314e05c0da0efe086d5124c1664ad05a47e0
author Dominic Symes <dominic.symes@arm.com> 1522782479 +0200
committer Dominic Symes <dominic.symes@arm.com> 1522850331 +0000

[NORMATIVE] Signal which tile is used for cdf update

This patch adds signalling of the tile id to use for cdf
update as suggested by Peter de Rivaz and agreed at the
working group meeting of 3rd April 2018. The encoder can
select any tile it likes for the cdf update but at the
moment chooses the largest tile to signal. The decoder
uses which ever tile was signalled.

The additional bits are only signalled if there is more
than one tile and the signalling uses
(log2_tile_cols + log2_tile_rows) bits.

BUG=aomedia:1678

Change-Id: I1db514b8078ccf2a0ba5f3a249ee2eaf59917250