Hi all,
I'd like to use PredIntraAngs_C() (and other variants of the
intra_pred_allangs primitives) for chroma blocks. My understanding from the
standard is that neighbor samples for chroma blocks are never filtered (please
correct me if I'm wrong!), so the neigbor pixel arrays provided via the pAbove1
and pLeft1 arguments should never be used. The logic in PredIntraAngs_C()
decides whether to use the filtered or unfiltered neighbor pixels using a LUT
indexed by block size and angular direction; the decision does not use the
bLuma argument. When I pass in bLuma == false, pAbove1 and pLeft1 are still
used in the underlying PredIntraAngBufRef().
Should I:
1) pass in pAbove1 == pAbove0 and pLeft1 == pLeft0 to circumvent the issue?
2) patch PredIntraAngs_C() to decide appropriately based on bLuma?
Thanks!
-Matt
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