1/* 2 * Copyright 2013 The Android Open Source Project 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8#include <emmintrin.h> 9#include "SkColorPriv.h" 10#include "SkMorphology_opts_SSE2.h" 11 12/* SSE2 version of dilateX, dilateY, erodeX, erodeY. 13 * portable versions are in src/effects/SkMorphologyImageFilter.cpp. 14 */ 15 16enum MorphType { 17 kDilate, kErode 18}; 19 20enum MorphDirection { 21 kX, kY 22}; 23 24template<MorphType type, MorphDirection direction> 25static void SkMorph_SSE2(const SkPMColor* src, SkPMColor* dst, int radius, 26 int width, int height, int srcStride, int dstStride) 27{ 28 const int srcStrideX = direction == kX ? 1 : srcStride; 29 const int dstStrideX = direction == kX ? 1 : dstStride; 30 const int srcStrideY = direction == kX ? srcStride : 1; 31 const int dstStrideY = direction == kX ? dstStride : 1; 32 radius = SkMin32(radius, width - 1); 33 const SkPMColor* upperSrc = src + radius * srcStrideX; 34 for (int x = 0; x < width; ++x) { 35 const SkPMColor* lp = src; 36 const SkPMColor* up = upperSrc; 37 SkPMColor* dptr = dst; 38 for (int y = 0; y < height; ++y) { 39 __m128i max = type == kDilate ? _mm_setzero_si128() : _mm_set1_epi32(0xFFFFFFFF); 40 for (const SkPMColor* p = lp; p <= up; p += srcStrideX) { 41 __m128i src_pixel = _mm_cvtsi32_si128(*p); 42 max = type == kDilate ? _mm_max_epu8(src_pixel, max) : _mm_min_epu8(src_pixel, max); 43 } 44 *dptr = _mm_cvtsi128_si32(max); 45 dptr += dstStrideY; 46 lp += srcStrideY; 47 up += srcStrideY; 48 } 49 if (x >= radius) { 50 src += srcStrideX; 51 } 52 if (x + radius < width - 1) { 53 upperSrc += srcStrideX; 54 } 55 dst += dstStrideX; 56 } 57} 58 59void SkDilateX_SSE2(const SkPMColor* src, SkPMColor* dst, int radius, 60 int width, int height, int srcStride, int dstStride) 61{ 62 SkMorph_SSE2<kDilate, kX>(src, dst, radius, width, height, srcStride, dstStride); 63} 64 65void SkErodeX_SSE2(const SkPMColor* src, SkPMColor* dst, int radius, 66 int width, int height, int srcStride, int dstStride) 67{ 68 SkMorph_SSE2<kErode, kX>(src, dst, radius, width, height, srcStride, dstStride); 69} 70 71void SkDilateY_SSE2(const SkPMColor* src, SkPMColor* dst, int radius, 72 int width, int height, int srcStride, int dstStride) 73{ 74 SkMorph_SSE2<kDilate, kY>(src, dst, radius, width, height, srcStride, dstStride); 75} 76 77void SkErodeY_SSE2(const SkPMColor* src, SkPMColor* dst, int radius, 78 int width, int height, int srcStride, int dstStride) 79{ 80 SkMorph_SSE2<kErode, kY>(src, dst, radius, width, height, srcStride, dstStride); 81} 82