tree 7b7fc6a138a74c947ced7ce145759898bdb9ed2e
parent 01b24807940e90703c1fd1bb22ad5325a28f5a51
author Jayasanker J <jayasanker.j@ittiam.com> 1628761860 +0530
committer Wan-Teh Chang <wtc@google.com> 1633743945 +0000

Allintra: Reduce border_in_pixels for frame buffers

For allintra encoding mode, inter-frame motion search is not
applicable and the intraBC motion vectors are restricted within the
tile boundaries. Hence, the border value used in the allocation of
frame buffer is reduced from 160 pixels to 64 pixels in case of
allintra encoding mode.

For AVIF image encode with speed = 9,

             HEAP Memory reduction(%)
Resolution   threads=1    threads=4
640x360        9.00         5.64
768x512        6.92         4.80
832x480        7.20         5.16
1280x720       5.03         4.10

For threads=4, an average encode time reduction of ~3.47% is
observed for 360p-720p resolutions.

HEAP memory reduction was measured using the following command.
$valgrind --tool=massif ./avifenc ...

Change-Id: Ibf690032b4c86a07f7751889de36b21e94544f1c