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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 14:29:10 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 14:29:10 +0000 |
commit | 2aa4a82499d4becd2284cdb482213d541b8804dd (patch) | |
tree | b80bf8bf13c3766139fbacc530efd0dd9d54394c /media/libyuv/libyuv/source/compare_neon.cc | |
parent | Initial commit. (diff) | |
download | firefox-2aa4a82499d4becd2284cdb482213d541b8804dd.tar.xz firefox-2aa4a82499d4becd2284cdb482213d541b8804dd.zip |
Adding upstream version 86.0.1.upstream/86.0.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'media/libyuv/libyuv/source/compare_neon.cc')
-rw-r--r-- | media/libyuv/libyuv/source/compare_neon.cc | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/media/libyuv/libyuv/source/compare_neon.cc b/media/libyuv/libyuv/source/compare_neon.cc new file mode 100644 index 0000000000..2a2181e0cb --- /dev/null +++ b/media/libyuv/libyuv/source/compare_neon.cc @@ -0,0 +1,96 @@ +/* + * 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(__ARM_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( + "vmov.u16 q4, #0 \n" // accumulator + + "1: \n" + "vld1.8 {q0, q1}, [%0]! \n" + "vld1.8 {q2, q3}, [%1]! \n" + "veor.32 q0, q0, q2 \n" + "veor.32 q1, q1, q3 \n" + "vcnt.i8 q0, q0 \n" + "vcnt.i8 q1, q1 \n" + "subs %2, %2, #32 \n" + "vadd.u8 q0, q0, q1 \n" // 16 byte counts + "vpadal.u8 q4, q0 \n" // 8 shorts + "bgt 1b \n" + + "vpaddl.u16 q0, q4 \n" // 4 ints + "vpadd.u32 d0, d0, d1 \n" + "vpadd.u32 d0, d0, d0 \n" + "vmov.32 %3, d0[0] \n" + + : "+r"(src_a), "+r"(src_b), "+r"(count), "=r"(diff) + : + : "cc", "q0", "q1", "q2", "q3", "q4"); + return diff; +} + +uint32_t SumSquareError_NEON(const uint8_t* src_a, + const uint8_t* src_b, + int count) { + uint32_t sse; + asm volatile( + "vmov.u8 q8, #0 \n" + "vmov.u8 q10, #0 \n" + "vmov.u8 q9, #0 \n" + "vmov.u8 q11, #0 \n" + + "1: \n" + "vld1.8 {q0}, [%0]! \n" + "vld1.8 {q1}, [%1]! \n" + "subs %2, %2, #16 \n" + "vsubl.u8 q2, d0, d2 \n" + "vsubl.u8 q3, d1, d3 \n" + "vmlal.s16 q8, d4, d4 \n" + "vmlal.s16 q9, d6, d6 \n" + "vmlal.s16 q10, d5, d5 \n" + "vmlal.s16 q11, d7, d7 \n" + "bgt 1b \n" + + "vadd.u32 q8, q8, q9 \n" + "vadd.u32 q10, q10, q11 \n" + "vadd.u32 q11, q8, q10 \n" + "vpaddl.u32 q1, q11 \n" + "vadd.u64 d0, d2, d3 \n" + "vmov.32 %3, d0[0] \n" + : "+r"(src_a), "+r"(src_b), "+r"(count), "=r"(sse) + : + : "memory", "cc", "q0", "q1", "q2", "q3", "q8", "q9", "q10", "q11"); + return sse; +} + +#endif // defined(__ARM_NEON__) && !defined(__aarch64__) + +#ifdef __cplusplus +} // extern "C" +} // namespace libyuv +#endif |