| ... | ... | @@ -19,9 +19,6 @@ Removing redundancies: |
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- the identity_* inverse transforms are stored transposed (as are all other coefficient tables). In all other cases, this saves a transpose in assembly, but for those, it actually means we have to transpose, even though in theory we wouldn't have to at all. Therefore, a potential optimization would be to have a special untransposed zigzag coefficient table and remove the transpose from the assembly, which would make those inverse transforms slightly faster.
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- when film grain is enabled but some planes have no grain, we currently copy these no-grain planes to the new buffer. Instead, we should use per-plane references and simply copy the reference instead of the data.
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Other speed optimizations:
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- get rid of `memset(0)` of seq_hdr and frame_hdr after allocation.
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Cleanups:
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- palette buffers are always 16-bit, even if content is 8-bit (remaining item in #257);
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- lfmask and l/a ctx zero can be done in tile instead of frame context for better distribution.
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