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