tree fe2c1a297a9caabe2ef145c102f4778c091d95d5
parent 750d86390cdeae1d3f08051e5589493716f4763a
author Wan-Teh Chang <wtc@google.com> 1627091506 -0700
committer Wan-Teh Chang <wtc@google.com> 1633046554 +0000

Detect chroma subsampling more directly

This is the aom_scale/generic/yv12extend.c and
aom_scale/mips/dspr2/yv12extend_dspr2.c version of
commit bce31a8248b3f339acbf695972384177370c4cb0.

In extend_frame(), detect chroma subsampling more directly by testing
ybf->subsampling_x and ybf->subsampling_y. The original tests do not
work when ybf->y_width or ybf->y_height is equal to 1.

BUG=aomedia:3113

Change-Id: I577a9a4915d22d15950622a1eb130d0859dc76fb
(cherry picked from commit d5779aa619d1bbdbe42f5a7a0241160d5bf26acb)