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665174fdbb
Running clang-format with chromium's style guide. The goal is n-fold: * providing consistency and readability (that's what code guidelines are for) * preventing noise with presubmit checks and git cl format * building on the previous point: making it easier to automatically fix format issues * you name it Please consider using git-hyper-blame to ignore this commit. Bug: webrtc:9340 Change-Id: I694567c4cdf8cee2860958cfe82bfaf25848bb87 Reviewed-on: https://webrtc-review.googlesource.com/81185 Reviewed-by: Patrik Höglund <phoglund@webrtc.org> Cr-Commit-Position: refs/heads/master@{#23660}
102 lines
3.1 KiB
C++
102 lines
3.1 KiB
C++
/*
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* Copyright (c) 2016 The WebRTC 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 "modules/desktop_capture/differ_vector_sse2.h"
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#if defined(_MSC_VER)
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#include <intrin.h>
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#else
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#include <emmintrin.h>
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#include <mmintrin.h>
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#endif
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namespace webrtc {
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extern bool VectorDifference_SSE2_W16(const uint8_t* image1,
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const uint8_t* image2) {
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__m128i acc = _mm_setzero_si128();
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__m128i v0;
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__m128i v1;
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__m128i sad;
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const __m128i* i1 = reinterpret_cast<const __m128i*>(image1);
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const __m128i* i2 = reinterpret_cast<const __m128i*>(image2);
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v0 = _mm_loadu_si128(i1);
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v1 = _mm_loadu_si128(i2);
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sad = _mm_sad_epu8(v0, v1);
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acc = _mm_adds_epu16(acc, sad);
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v0 = _mm_loadu_si128(i1 + 1);
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v1 = _mm_loadu_si128(i2 + 1);
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sad = _mm_sad_epu8(v0, v1);
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acc = _mm_adds_epu16(acc, sad);
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v0 = _mm_loadu_si128(i1 + 2);
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v1 = _mm_loadu_si128(i2 + 2);
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sad = _mm_sad_epu8(v0, v1);
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acc = _mm_adds_epu16(acc, sad);
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v0 = _mm_loadu_si128(i1 + 3);
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v1 = _mm_loadu_si128(i2 + 3);
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sad = _mm_sad_epu8(v0, v1);
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acc = _mm_adds_epu16(acc, sad);
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// This essential means sad = acc >> 64. We only care about the lower 16
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// bits.
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sad = _mm_shuffle_epi32(acc, 0xEE);
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sad = _mm_adds_epu16(sad, acc);
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return _mm_cvtsi128_si32(sad) != 0;
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}
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extern bool VectorDifference_SSE2_W32(const uint8_t* image1,
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const uint8_t* image2) {
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__m128i acc = _mm_setzero_si128();
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__m128i v0;
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__m128i v1;
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__m128i sad;
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const __m128i* i1 = reinterpret_cast<const __m128i*>(image1);
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const __m128i* i2 = reinterpret_cast<const __m128i*>(image2);
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v0 = _mm_loadu_si128(i1);
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v1 = _mm_loadu_si128(i2);
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sad = _mm_sad_epu8(v0, v1);
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acc = _mm_adds_epu16(acc, sad);
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v0 = _mm_loadu_si128(i1 + 1);
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v1 = _mm_loadu_si128(i2 + 1);
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sad = _mm_sad_epu8(v0, v1);
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acc = _mm_adds_epu16(acc, sad);
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v0 = _mm_loadu_si128(i1 + 2);
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v1 = _mm_loadu_si128(i2 + 2);
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sad = _mm_sad_epu8(v0, v1);
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acc = _mm_adds_epu16(acc, sad);
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v0 = _mm_loadu_si128(i1 + 3);
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v1 = _mm_loadu_si128(i2 + 3);
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sad = _mm_sad_epu8(v0, v1);
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acc = _mm_adds_epu16(acc, sad);
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v0 = _mm_loadu_si128(i1 + 4);
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v1 = _mm_loadu_si128(i2 + 4);
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sad = _mm_sad_epu8(v0, v1);
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acc = _mm_adds_epu16(acc, sad);
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v0 = _mm_loadu_si128(i1 + 5);
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v1 = _mm_loadu_si128(i2 + 5);
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sad = _mm_sad_epu8(v0, v1);
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acc = _mm_adds_epu16(acc, sad);
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v0 = _mm_loadu_si128(i1 + 6);
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v1 = _mm_loadu_si128(i2 + 6);
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sad = _mm_sad_epu8(v0, v1);
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acc = _mm_adds_epu16(acc, sad);
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v0 = _mm_loadu_si128(i1 + 7);
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v1 = _mm_loadu_si128(i2 + 7);
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sad = _mm_sad_epu8(v0, v1);
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acc = _mm_adds_epu16(acc, sad);
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// This essential means sad = acc >> 64. We only care about the lower 16
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// bits.
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sad = _mm_shuffle_epi32(acc, 0xEE);
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sad = _mm_adds_epu16(sad, acc);
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return _mm_cvtsi128_si32(sad) != 0;
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}
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} // namespace webrtc
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