tree 5c4d74869e639fe60d66f9cd29b353ee37a1600c
parent 38d4f0a92eb1ea715f4e4c9c993f46b0e0a5d269
author Cheng Chen <chengchen@google.com> 1650582052 -0700
committer Cheng Chen <chengchen@google.com> 1651618488 +0000

Correctly set cpi->use_screen_content flag

This cl is a fix.

When we set "--tune-content=screen" from the command line, the desired
behavior of the encoder is to encode WITH screen content tools
(both intrabc and palette), and skip executing the function
"av1_determine_sc_tools_with_encoding".

However, since the flag "cpi->use_screen_content" is not properly set,
the function "av1_determine_sc_tools_with_encoding" is called and
determines whether to use intrabc and palette separately.
Due to encoder change, it sometimes makes wrong decisions.

With this cl, screen content tools are always turned on
when "--tune-content=screen" is set. This fix has a significant impact
on stats (brings back coding gain of screen content tools):

speed 0, screen content set, key frame.
ovr_psnr    ssim        vmaf
-10.79%     -11.38%     -12.68%

Change-Id: Iea7cce2a15e3e96b4c610cefa3528e47eed8bea5