[pull] master from fraunhoferhhi:master#169
Merged
Merged
Conversation
Add Neon implementation of the single-component CC-ALF filter. The Neon kernel processes four chroma samples from one row at a time for subsampled chroma formats 4:2:0 and 4:2:2, using the same luma-cross load layout as the combined Cb/Cr CC-ALF kernel while accumulating one chroma output. The implementation keeps the scalar virtual boundary handling, performs the signed seven-tap accumulation in 32-bit, and clips the filtered chroma result back to the bit-depth range. Also, add a 4-lane `vvdec_vsqadd_u16` helper to match the existing 8-lane variant, so Neon paths can use AArch64 `USQADD` for 4-lane unsigned Pel plus signed delta clipping while retaining the Armv7 fallback behavior. 4:4:4 chroma is left on the scalar path because it needs a different luma load layout from the `scaleX == 1` case handled here. This implementation improves the performance by 74% compared with the existing SIMDe implementation when benchmarked on a Neoverse V2 using LLVM 22.
Arm: Add Neon implementation of ALF filterBlkCcAlf
push internal changes
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to subscribe to this conversation on GitHub.
Already have an account?
Sign in.
3 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
See Commits and Changes for more details.
Created by
pull[bot] (v2.0.0-alpha.4)
Can you help keep this open source service alive? 💖 Please sponsor : )