tree a7fbf2c09fce554116caa36dfc18b75e9f4a01f2
parent a4d341b0e88dc9d401ece65cf86ee99255a31f07
author Jingning Han <jingning@google.com> 1519882740 -0800
committer Jingning Han <jingning@google.com> 1519924724 +0000

[NORMATIVE]Update txk_type for tx_64x64 in 422 format

Properly update the txk_type array for tx_64x64 cases. It solves
a potential use of uninitialized txk_type value in chroma block
coding in YUV422 format. When the luma block size is 64x64 and is
coded using TX_64X64, the corresponding chroma block would be at
32x64 and the chroma block tx_size would be TX_32X32 in YUV422
format. To support all the YUV420/422/444 formats at 64/128 block
level block sizes, we always fill up the luma block txk_type in
up to 16x16 tx block unit, for the collocated chroma component
reference.

BUG=aomedia:1450

Change-Id: I115202d660b47d8f8747e2289b6c87a53ea3133d