commit 8f659daffd820485a152c92a67c5ec961e31b281
author George Steed <george.steed@arm.com> Mon Sep 09 17:53:24 2024 +0100
committer Frank Barchard <fbarchard@chromium.org> Wed Dec 04 17:51:08 2024 +0000
tree 8b136c968f1253f6e0e45237e61249c442991426
parent 233f859e3ccad205a0e2d585f5ac09a806ba0230

[AArch64] Add SVE2 implementations of NV{12,21}ToRGB24Row

Now that we have the `_2X` versions of the macros we can use these to
implement `ToRGB24` kernels. These cannot use the bottom/top approach
previously used by other SVE kernels since there are three rather than
two or four elements each.

Reduction in runtimes observed compared to the existing Neon
implementations:

            | NV12ToRGB24Row | NV21ToRGB24Row
Cortex-A510 |         -60.7% |         -60.7%
Cortex-A520 |         -46.0% |         -46.0%
Cortex-A715 |         -25.2% |         -25.2%
Cortex-A720 |         -25.2% |         -25.2%
  Cortex-X2 |         -28.9% |         -29.0%
  Cortex-X3 |         -28.2% |         -28.1%
  Cortex-X4 |         -30.8% |         -30.7%
Cortex-X925 |         -28.8% |         -28.9%

Change-Id: I39853d124bfdcac38584109870b398b8ecd5b632
Reviewed-on: https://chromium-review.googlesource.com/c/libyuv/libyuv/+/6067149
Reviewed-by: Frank Barchard <fbarchard@chromium.org>