[vlc-devel] [PATCH] blend: subsample chroma correctly when blending rgba to yv12

[Grigori Goronzy]

Hi,

This patch fixes RGBA -> YV12 blending for the most part, see trac
ticket [1]. What's still missing is blending of chroma on edge pixels if
they don't line up with chroma blocks. It's still clearly an improvement
IMHO.

A cleaner solution might be to blend onto a temporary I444 picture and
downsample to I420 afterwards.

Grigori

[1] http://trac.videolan.org/vlc/ticket/3009
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