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Jingning Han authored
Resolve a rare enc/dec mismatch issue triggered by the 4x4 chroma block size in sub8x8 block coding. To avoid using 2x2 chroma block size, it always uses the top-left 4x4 luma block coding information to predict the 4x4 chroma block. The rest 3 4x4 luma blocks will be coded independently without coding the collocated chroma blocks. The compression performance gains are 1.45% for lowres set (down from 2.4% of the original cb4x4 design). Change-Id: Iff560fcab172ed4219434d5174c4d8dfbbb04135
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