tree d1c58ec54c994ace83d68ca3f334b499512198c8
parent 4364ee455aac0ab091a5a9a4967b9e92c416c9e8
author Marco Paniconi <marpan@google.com> 1734635041 -0800
committer Marco Paniconi <marpan@google.com> 1734712208 -0800

rtc-screen: Increase horiz search in estimate_scroll_motion

Scroll detection occurs in two places:
1) at the frame level in estimate_scroll_motion(). This is only done under certain conditions and only for a few superblocks.
2) at the superblock level in the variance partitioning, this is done on every frame.

This change only increases the horiz/col search window (makes it equal to the vert/row motion for high frame_source_sad) in the estimate_scroll_motion(), to avoid speed slowdown for now.

Reduces artifacts in the issue below for horiz scrolling.

Stats changed for speed 11 rtc_screen:
negligible change in speed/IC.

Bug: b:383306740
Change-Id: I54f329cff424299252cf5bd46d1329eb68009f59