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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
commit | 6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch) | |
tree | a68f146d7fa01f0134297619fbe7e33db084e0aa /media/libyuv/libyuv/source/compare_neon64.cc | |
parent | Initial commit. (diff) | |
download | thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.tar.xz thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.zip |
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'media/libyuv/libyuv/source/compare_neon64.cc')
-rw-r--r-- | media/libyuv/libyuv/source/compare_neon64.cc | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/media/libyuv/libyuv/source/compare_neon64.cc b/media/libyuv/libyuv/source/compare_neon64.cc new file mode 100644 index 0000000000..70fb9b9143 --- /dev/null +++ b/media/libyuv/libyuv/source/compare_neon64.cc @@ -0,0 +1,94 @@ +/* + * Copyright 2012 The LibYuv Project Authors. All rights reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +#include "libyuv/basic_types.h" + +#include "libyuv/compare_row.h" +#include "libyuv/row.h" + +#ifdef __cplusplus +namespace libyuv { +extern "C" { +#endif + +#if !defined(LIBYUV_DISABLE_NEON) && defined(__aarch64__) + +// 256 bits at a time +// uses short accumulator which restricts count to 131 KB +uint32_t HammingDistance_NEON(const uint8_t* src_a, + const uint8_t* src_b, + int count) { + uint32_t diff; + asm volatile( + "movi v4.8h, #0 \n" + + "1: \n" + "ld1 {v0.16b, v1.16b}, [%0], #32 \n" + "ld1 {v2.16b, v3.16b}, [%1], #32 \n" + "eor v0.16b, v0.16b, v2.16b \n" + "prfm pldl1keep, [%0, 448] \n" // prefetch 7 lines ahead + "eor v1.16b, v1.16b, v3.16b \n" + "cnt v0.16b, v0.16b \n" + "prfm pldl1keep, [%1, 448] \n" + "cnt v1.16b, v1.16b \n" + "subs %w2, %w2, #32 \n" + "add v0.16b, v0.16b, v1.16b \n" + "uadalp v4.8h, v0.16b \n" + "b.gt 1b \n" + + "uaddlv s4, v4.8h \n" + "fmov %w3, s4 \n" + : "+r"(src_a), "+r"(src_b), "+r"(count), "=r"(diff) + : + : "cc", "v0", "v1", "v2", "v3", "v4"); + return diff; +} + +uint32_t SumSquareError_NEON(const uint8_t* src_a, + const uint8_t* src_b, + int count) { + uint32_t sse; + asm volatile( + "eor v16.16b, v16.16b, v16.16b \n" + "eor v18.16b, v18.16b, v18.16b \n" + "eor v17.16b, v17.16b, v17.16b \n" + "eor v19.16b, v19.16b, v19.16b \n" + + "1: \n" + "ld1 {v0.16b}, [%0], #16 \n" + "ld1 {v1.16b}, [%1], #16 \n" + "subs %w2, %w2, #16 \n" + "usubl v2.8h, v0.8b, v1.8b \n" + "usubl2 v3.8h, v0.16b, v1.16b \n" + "prfm pldl1keep, [%0, 448] \n" // prefetch 7 lines ahead + "smlal v16.4s, v2.4h, v2.4h \n" + "smlal v17.4s, v3.4h, v3.4h \n" + "prfm pldl1keep, [%1, 448] \n" + "smlal2 v18.4s, v2.8h, v2.8h \n" + "smlal2 v19.4s, v3.8h, v3.8h \n" + "b.gt 1b \n" + + "add v16.4s, v16.4s, v17.4s \n" + "add v18.4s, v18.4s, v19.4s \n" + "add v19.4s, v16.4s, v18.4s \n" + "addv s0, v19.4s \n" + "fmov %w3, s0 \n" + : "+r"(src_a), "+r"(src_b), "+r"(count), "=r"(sse) + : + : "cc", "v0", "v1", "v2", "v3", "v16", "v17", "v18", "v19"); + return sse; +} + +#endif // !defined(LIBYUV_DISABLE_NEON) && defined(__aarch64__) + +#ifdef __cplusplus +} // extern "C" +} // namespace libyuv +#endif |