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Steinar Midtskogen authored
Since CDEF looks uses the luma direction for chroma, CDEF would have to change significantly to support formats like 4:2:2. The limited use of such formats does not justify the complexity to support this, so the simple solution is to mandate that the chroma planes aren't filtered if subsampling_x != subsampling_y. Most of the visual gain is in luma, anyway. This also means that the chroma strengths and chroma skip condition shall not be sent if subsampling_x != subsampling_y. BUG=aomedia:720 Change-Id: I35c184a6fe0908ae0fee1e74494b6904fa9a3c82
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