mirror of
https://chromium.googlesource.com/libyuv/libyuv
synced 2025-12-07 01:06:46 +08:00
cda9d38a4e
clangcl use compare_win for 32 bit, allowing fallback and enabling avx2 code for clang. move defines/protos to compare_row.h fix issue with odd width ARGBCopyAlpha functions by copying destination to temp buffer, then doing alpha copy, then copy back to destination. R=harryjin@google.com TBR=harryjin@google.com BUG=libyuv:484 Review URL: https://webrtc-codereview.appspot.com/59379004.
65 lines
2.0 KiB
C++
65 lines
2.0 KiB
C++
/*
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* Copyright 2012 The LibYuv Project Authors. All rights reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "libyuv/basic_types.h"
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#include "libyuv/compare_row.h"
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#include "libyuv/row.h"
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#ifdef __cplusplus
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namespace libyuv {
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extern "C" {
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#endif
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#if !defined(LIBYUV_DISABLE_NEON) && defined(__aarch64__)
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uint32 SumSquareError_NEON(const uint8* src_a, const uint8* src_b, int count) {
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volatile uint32 sse;
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asm volatile (
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"eor v16.16b, v16.16b, v16.16b \n"
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"eor v18.16b, v18.16b, v18.16b \n"
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"eor v17.16b, v17.16b, v17.16b \n"
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"eor v19.16b, v19.16b, v19.16b \n"
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"1: \n"
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MEMACCESS(0)
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"ld1 {v0.16b}, [%0], #16 \n"
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MEMACCESS(1)
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"ld1 {v1.16b}, [%1], #16 \n"
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"subs %w2, %w2, #16 \n"
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"usubl v2.8h, v0.8b, v1.8b \n"
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"usubl2 v3.8h, v0.16b, v1.16b \n"
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"smlal v16.4s, v2.4h, v2.4h \n"
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"smlal v17.4s, v3.4h, v3.4h \n"
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"smlal2 v18.4s, v2.8h, v2.8h \n"
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"smlal2 v19.4s, v3.8h, v3.8h \n"
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"b.gt 1b \n"
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"add v16.4s, v16.4s, v17.4s \n"
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"add v18.4s, v18.4s, v19.4s \n"
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"add v19.4s, v16.4s, v18.4s \n"
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"addv s0, v19.4s \n"
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"fmov %w3, s0 \n"
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: "+r"(src_a),
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"+r"(src_b),
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"+r"(count),
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"=r"(sse)
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:
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: "cc", "v0", "v1", "v2", "v3", "v16", "v17", "v18", "v19");
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return sse;
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}
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#endif // !defined(LIBYUV_DISABLE_NEON) && defined(__aarch64__)
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#ifdef __cplusplus
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} // extern "C"
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} // namespace libyuv
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#endif
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