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| author | Frank Barchard <fbarchard@google.com> | 2022-01-25 18:44:54 -0800 |
|---|---|---|
| committer | libyuv LUCI CQ <libyuv-scoped@luci-project-accounts.iam.gserviceaccount.com> | 2022-01-26 08:41:33 +0000 |
| commit | 2c6bfc02d5265c95df69190c785f5d00d13bb444 (patch) | |
| tree | 1f03f7ab21566a901e51dc3e2272bec8f2bcb324 /source/row_neon64.cc | |
| parent | 2f87e9a7135b83656c86b3b23ba582e0dfeb7fbb (diff) | |
| download | libyuv-2c6bfc02d5265c95df69190c785f5d00d13bb444.tar.gz | |
Remove MMI support
Bug: libyuv:916
Change-Id: I345b7e271ceb4b32fe91e292915e66be40812810
Reviewed-on: https://chromium-review.googlesource.com/c/libyuv/libyuv/+/3415817
Reviewed-by: Frank Barchard <fbarchard@chromium.org>
Reviewed-by: Wan-Teh Chang <wtc@google.com>
Commit-Queue: Frank Barchard <fbarchard@chromium.org>
Diffstat (limited to 'source/row_neon64.cc')
| -rw-r--r-- | source/row_neon64.cc | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/source/row_neon64.cc b/source/row_neon64.cc index 5471b258..92af20d2 100644 --- a/source/row_neon64.cc +++ b/source/row_neon64.cc @@ -604,6 +604,29 @@ void SplitUVRow_NEON(const uint8_t* src_uv, ); } +// Reads 16 byte Y's from tile and writes out 16 Y's. +// MM21 Y tiles are 16x32 so src_tile_stride = 512 bytes +// MM21 UV tiles are 8x16 so src_tile_stride = 256 bytes +// width measured in bytes so 8 UV = 16. +void DetileRow_NEON(const uint8_t* src, + ptrdiff_t src_tile_stride, + uint8_t* dst, + int width) { + asm volatile( + "1: \n" + "ld1 {v0.16b}, [%0], %3 \n" // load 16 bytes + "subs %w2, %w2, #16 \n" // 16 processed per loop + "prfm pldl1keep, [%0, 448] \n" + "st1 {v0.16b}, [%1], #16 \n" // store 16 bytes + "b.gt 1b \n" + : "+r"(src), // %0 + "+r"(dst), // %1 + "+r"(width) // %2 + : "r"(src_tile_stride) // %3 + : "cc", "memory", "v0" // Clobber List + ); +} + #if LIBYUV_USE_ST2 // Reads 16 U's and V's and writes out 16 pairs of UV. void MergeUVRow_NEON(const uint8_t* src_u, |