| /* |
| * Copyright 2013 The Android Open Source Project |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include <emmintrin.h> |
| #include "SkColorPriv.h" |
| #include "SkMorphology_opts_SSE2.h" |
| |
| /* SSE2 version of dilateX, dilateY, erodeX, erodeY. |
| * portable versions are in src/effects/SkMorphologyImageFilter.cpp. |
| */ |
| |
| enum MorphType { |
| kDilate, kErode |
| }; |
| |
| enum MorphDirection { |
| kX, kY |
| }; |
| |
| template<MorphType type, MorphDirection direction> |
| static void SkMorph_SSE2(const SkPMColor* src, SkPMColor* dst, int radius, |
| int width, int height, int srcStride, int dstStride) |
| { |
| const int srcStrideX = direction == kX ? 1 : srcStride; |
| const int dstStrideX = direction == kX ? 1 : dstStride; |
| const int srcStrideY = direction == kX ? srcStride : 1; |
| const int dstStrideY = direction == kX ? dstStride : 1; |
| radius = SkMin32(radius, width - 1); |
| const SkPMColor* upperSrc = src + radius * srcStrideX; |
| for (int x = 0; x < width; ++x) { |
| const SkPMColor* lp = src; |
| const SkPMColor* up = upperSrc; |
| SkPMColor* dptr = dst; |
| for (int y = 0; y < height; ++y) { |
| __m128i max = type == kDilate ? _mm_setzero_si128() : _mm_set1_epi32(0xFFFFFFFF); |
| for (const SkPMColor* p = lp; p <= up; p += srcStrideX) { |
| __m128i src_pixel = _mm_cvtsi32_si128(*p); |
| max = type == kDilate ? _mm_max_epu8(src_pixel, max) : _mm_min_epu8(src_pixel, max); |
| } |
| *dptr = _mm_cvtsi128_si32(max); |
| dptr += dstStrideY; |
| lp += srcStrideY; |
| up += srcStrideY; |
| } |
| if (x >= radius) { |
| src += srcStrideX; |
| } |
| if (x + radius < width - 1) { |
| upperSrc += srcStrideX; |
| } |
| dst += dstStrideX; |
| } |
| } |
| |
| void SkDilateX_SSE2(const SkPMColor* src, SkPMColor* dst, int radius, |
| int width, int height, int srcStride, int dstStride) |
| { |
| SkMorph_SSE2<kDilate, kX>(src, dst, radius, width, height, srcStride, dstStride); |
| } |
| |
| void SkErodeX_SSE2(const SkPMColor* src, SkPMColor* dst, int radius, |
| int width, int height, int srcStride, int dstStride) |
| { |
| SkMorph_SSE2<kErode, kX>(src, dst, radius, width, height, srcStride, dstStride); |
| } |
| |
| void SkDilateY_SSE2(const SkPMColor* src, SkPMColor* dst, int radius, |
| int width, int height, int srcStride, int dstStride) |
| { |
| SkMorph_SSE2<kDilate, kY>(src, dst, radius, width, height, srcStride, dstStride); |
| } |
| |
| void SkErodeY_SSE2(const SkPMColor* src, SkPMColor* dst, int radius, |
| int width, int height, int srcStride, int dstStride) |
| { |
| SkMorph_SSE2<kErode, kY>(src, dst, radius, width, height, srcStride, dstStride); |
| } |