tree 9e1a9f210824f079a7bc51451e81855271e2600e
parent cfa88a342745ce4faf5b197421a894557291f66d
author Ravi Chaudhary <ravi.chaudhary@ittiam.com> 1585743266 +0530
committer Yunqing Wang <yunqingwang@google.com> 1585772051 +0000

Optimize hash table for lower resolution contents

For lower resolution contents, width or height <= 480,
sb_size is set as 64x64 instead of 128x128. The hash
tables for these resolutions are allocated accordingly.

Observed memory footprint reduction with similar
encoding time.

Resolution    Tile     Memory reduction
                       Single   Multi
                       Thread   Thread
640x360       2x1      ~4%    ~8% (2 threads)
832x480       2x1      ~4%    ~3% (2 threads)

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

Change-Id: I5ce2e81276c191e4434b6b2b19fce4d4d7da757a