tree 6578d00fe750a853ecf5bbd1fc36ca6111de12fe
parent d179b85b3b8d1c18b53794a94180b5464f897cc2
author Jayasanker J <jayasanker.j@ittiam.com> 1600441575 +0530
committer Yunqing Wang <yunqingwang@google.com> 1600963941 +0000

Optimize memory in palette tile token buffer

This CL optimizes the memory usage in palette tile token buffer
by replacing color_map_cdf pointer in TokenExtra with the index
to color_ctx.

This CL is bit-exact with no impact on encode time.

Resolution    Tile  Avg Memory reduction
                      Single     Multi
                      thread    thread
640x360       2x1      7.11%     6.65%
832x480       2x1      8.99%     8.16%
1280x720      2x2      9.96%     9.75%
1920x1080     4x2     11.36%    10.72%

Memory measuring command:
$ command time -v ./aomenc ...

Change-Id: Ife166a9da2cfb2d7f9bed483109d87cc4c8de0ea