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https://chromium.googlesource.com/libyuv/libyuv
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c5323b0fdc
As per the preparation patch added in Chromium sources at, 2150943003: Add MIPS SIMD Arch (MSA) build flags for GYP/GN builds This patch adds first MSA optimized function in libYUV project. BUG=libyuv:634 R=fbarchard@google.com Review URL: https://codereview.chromium.org/2285683002 .
46 lines
1.3 KiB
C++
46 lines
1.3 KiB
C++
/*
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* Copyright 2016 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/row.h"
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#if !defined(LIBYUV_DISABLE_MSA) && defined(__mips_msa)
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#include "libyuv/macros_msa.h"
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#endif
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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_MSA) && defined(__mips_msa)
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void MirrorRow_MSA(const uint8* src, uint8* dst, int width) {
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int count;
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v16u8 src0, src1, src2, src3;
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v16u8 dst0, dst1, dst2, dst3;
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v16i8 mask = { 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0 };
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src += width - 64;
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for (count = 0; count < width; count += 64) {
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LD_UB4(src, 16, src3, src2, src1, src0);
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VSHF_B2_UB(src3, src3, src2, src2, mask, mask, dst3, dst2);
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VSHF_B2_UB(src1, src1, src0, src0, mask, mask, dst1, dst0);
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ST_UB4(dst0, dst1, dst2, dst3, dst, 16);
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dst += 64;
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src -= 64;
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}
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}
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#endif // !defined(LIBYUV_DISABLE_MSA) && defined(__mips_msa)
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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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