| /* |
| * 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 "SkColorPriv.h" |
| #include "SkMorphology_opts.h" |
| #include "SkMorphology_opts_neon.h" |
| |
| #include <arm_neon.h> |
| |
| /* neon 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_neon(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) { |
| uint8x8_t max = vdup_n_u8(type == kDilate ? 0 : 255); |
| for (const SkPMColor* p = lp; p <= up; p += srcStrideX) { |
| uint8x8_t src_pixel = vreinterpret_u8_u32(vdup_n_u32(*p)); |
| max = type == kDilate ? vmax_u8(src_pixel, max) : vmin_u8(src_pixel, max); |
| } |
| *dptr = vget_lane_u32(vreinterpret_u32_u8(max), 0); |
| dptr += dstStrideY; |
| lp += srcStrideY; |
| up += srcStrideY; |
| } |
| if (x >= radius) src += srcStrideX; |
| if (x + radius < width - 1) upperSrc += srcStrideX; |
| dst += dstStrideX; |
| } |
| } |
| |
| void SkDilateX_neon(const SkPMColor* src, SkPMColor* dst, int radius, |
| int width, int height, int srcStride, int dstStride) |
| { |
| SkMorph_neon<kDilate, kX>(src, dst, radius, width, height, srcStride, dstStride); |
| } |
| |
| void SkErodeX_neon(const SkPMColor* src, SkPMColor* dst, int radius, |
| int width, int height, int srcStride, int dstStride) |
| { |
| SkMorph_neon<kErode, kX>(src, dst, radius, width, height, srcStride, dstStride); |
| } |
| |
| void SkDilateY_neon(const SkPMColor* src, SkPMColor* dst, int radius, |
| int width, int height, int srcStride, int dstStride) |
| { |
| SkMorph_neon<kDilate, kY>(src, dst, radius, width, height, srcStride, dstStride); |
| } |
| |
| void SkErodeY_neon(const SkPMColor* src, SkPMColor* dst, int radius, |
| int width, int height, int srcStride, int dstStride) |
| { |
| SkMorph_neon<kErode, kY>(src, dst, radius, width, height, srcStride, dstStride); |
| } |