senorblanco@chromium.org | 05054f1 | 2012-03-02 21:05:45 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2012 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 "SkMorphologyImageFilter.h" |
djsollen@google.com | 64a0ec3 | 2012-06-12 15:17:27 +0000 | [diff] [blame] | 9 | #include "SkBitmap.h" |
senorblanco@chromium.org | 05054f1 | 2012-03-02 21:05:45 +0000 | [diff] [blame] | 10 | #include "SkColorPriv.h" |
senorblanco@chromium.org | 302cffb | 2012-08-01 20:16:34 +0000 | [diff] [blame^] | 11 | #include "GrContext.h" |
| 12 | #include "GrTexture.h" |
senorblanco@chromium.org | 05054f1 | 2012-03-02 21:05:45 +0000 | [diff] [blame] | 13 | |
| 14 | SkMorphologyImageFilter::SkMorphologyImageFilter(SkFlattenableReadBuffer& buffer) |
| 15 | : INHERITED(buffer) { |
tomhudson@google.com | 7558925 | 2012-04-10 17:42:21 +0000 | [diff] [blame] | 16 | fRadius.fWidth = buffer.readInt(); |
| 17 | fRadius.fHeight = buffer.readInt(); |
senorblanco@chromium.org | 05054f1 | 2012-03-02 21:05:45 +0000 | [diff] [blame] | 18 | } |
| 19 | |
| 20 | SkMorphologyImageFilter::SkMorphologyImageFilter(int radiusX, int radiusY) |
| 21 | : fRadius(SkISize::Make(radiusX, radiusY)) { |
| 22 | } |
| 23 | |
| 24 | |
djsollen@google.com | 5492424 | 2012-03-29 15:18:04 +0000 | [diff] [blame] | 25 | void SkMorphologyImageFilter::flatten(SkFlattenableWriteBuffer& buffer) const { |
senorblanco@chromium.org | 05054f1 | 2012-03-02 21:05:45 +0000 | [diff] [blame] | 26 | this->INHERITED::flatten(buffer); |
tomhudson@google.com | 7558925 | 2012-04-10 17:42:21 +0000 | [diff] [blame] | 27 | buffer.writeInt(fRadius.fWidth); |
| 28 | buffer.writeInt(fRadius.fHeight); |
senorblanco@chromium.org | 05054f1 | 2012-03-02 21:05:45 +0000 | [diff] [blame] | 29 | } |
| 30 | |
| 31 | static void erode(const SkPMColor* src, SkPMColor* dst, |
| 32 | int radius, int width, int height, |
| 33 | int srcStrideX, int srcStrideY, |
| 34 | int dstStrideX, int dstStrideY) |
| 35 | { |
senorblanco@chromium.org | 56dd630 | 2012-04-10 17:25:44 +0000 | [diff] [blame] | 36 | radius = SkMin32(radius, width - 1); |
| 37 | const SkPMColor* upperSrc = src + radius * srcStrideX; |
senorblanco@chromium.org | 05054f1 | 2012-03-02 21:05:45 +0000 | [diff] [blame] | 38 | for (int x = 0; x < width; ++x) { |
| 39 | const SkPMColor* lp = src; |
| 40 | const SkPMColor* up = upperSrc; |
| 41 | SkPMColor* dptr = dst; |
| 42 | for (int y = 0; y < height; ++y) { |
| 43 | int minB = 255, minG = 255, minR = 255, minA = 255; |
| 44 | for (const SkPMColor* p = lp; p <= up; p += srcStrideX) { |
| 45 | int b = SkGetPackedB32(*p); |
| 46 | int g = SkGetPackedG32(*p); |
| 47 | int r = SkGetPackedR32(*p); |
| 48 | int a = SkGetPackedA32(*p); |
| 49 | if (b < minB) minB = b; |
| 50 | if (g < minG) minG = g; |
| 51 | if (r < minR) minR = r; |
| 52 | if (a < minA) minA = a; |
| 53 | } |
| 54 | *dptr = SkPackARGB32(minA, minR, minG, minB); |
| 55 | dptr += dstStrideY; |
| 56 | lp += srcStrideY; |
| 57 | up += srcStrideY; |
| 58 | } |
| 59 | if (x >= radius) src += srcStrideX; |
| 60 | if (x + radius < width - 1) upperSrc += srcStrideX; |
| 61 | dst += dstStrideX; |
| 62 | } |
| 63 | } |
| 64 | |
| 65 | static void erodeX(const SkBitmap& src, SkBitmap* dst, int radiusX) |
| 66 | { |
| 67 | erode(src.getAddr32(0, 0), dst->getAddr32(0, 0), |
| 68 | radiusX, src.width(), src.height(), |
| 69 | 1, src.rowBytesAsPixels(), 1, dst->rowBytesAsPixels()); |
| 70 | } |
| 71 | |
| 72 | static void erodeY(const SkBitmap& src, SkBitmap* dst, int radiusY) |
| 73 | { |
| 74 | erode(src.getAddr32(0, 0), dst->getAddr32(0, 0), |
| 75 | radiusY, src.height(), src.width(), |
| 76 | src.rowBytesAsPixels(), 1, dst->rowBytesAsPixels(), 1); |
| 77 | } |
| 78 | |
| 79 | static void dilate(const SkPMColor* src, SkPMColor* dst, |
| 80 | int radius, int width, int height, |
| 81 | int srcStrideX, int srcStrideY, |
| 82 | int dstStrideX, int dstStrideY) |
| 83 | { |
senorblanco@chromium.org | 56dd630 | 2012-04-10 17:25:44 +0000 | [diff] [blame] | 84 | radius = SkMin32(radius, width - 1); |
| 85 | const SkPMColor* upperSrc = src + radius * srcStrideX; |
senorblanco@chromium.org | 05054f1 | 2012-03-02 21:05:45 +0000 | [diff] [blame] | 86 | for (int x = 0; x < width; ++x) { |
| 87 | const SkPMColor* lp = src; |
| 88 | const SkPMColor* up = upperSrc; |
| 89 | SkPMColor* dptr = dst; |
| 90 | for (int y = 0; y < height; ++y) { |
| 91 | int maxB = 0, maxG = 0, maxR = 0, maxA = 0; |
| 92 | for (const SkPMColor* p = lp; p <= up; p += srcStrideX) { |
| 93 | int b = SkGetPackedB32(*p); |
| 94 | int g = SkGetPackedG32(*p); |
| 95 | int r = SkGetPackedR32(*p); |
| 96 | int a = SkGetPackedA32(*p); |
| 97 | if (b > maxB) maxB = b; |
| 98 | if (g > maxG) maxG = g; |
| 99 | if (r > maxR) maxR = r; |
| 100 | if (a > maxA) maxA = a; |
| 101 | } |
| 102 | *dptr = SkPackARGB32(maxA, maxR, maxG, maxB); |
| 103 | dptr += dstStrideY; |
| 104 | lp += srcStrideY; |
| 105 | up += srcStrideY; |
| 106 | } |
| 107 | if (x >= radius) src += srcStrideX; |
| 108 | if (x + radius < width - 1) upperSrc += srcStrideX; |
| 109 | dst += dstStrideX; |
| 110 | } |
| 111 | } |
| 112 | |
| 113 | static void dilateX(const SkBitmap& src, SkBitmap* dst, int radiusX) |
| 114 | { |
| 115 | dilate(src.getAddr32(0, 0), dst->getAddr32(0, 0), |
| 116 | radiusX, src.width(), src.height(), |
| 117 | 1, src.rowBytesAsPixels(), 1, dst->rowBytesAsPixels()); |
| 118 | } |
| 119 | |
| 120 | static void dilateY(const SkBitmap& src, SkBitmap* dst, int radiusY) |
| 121 | { |
| 122 | dilate(src.getAddr32(0, 0), dst->getAddr32(0, 0), |
| 123 | radiusY, src.height(), src.width(), |
| 124 | src.rowBytesAsPixels(), 1, dst->rowBytesAsPixels(), 1); |
| 125 | } |
| 126 | |
| 127 | bool SkErodeImageFilter::onFilterImage(Proxy*, |
| 128 | const SkBitmap& src, const SkMatrix&, |
| 129 | SkBitmap* dst, SkIPoint*) { |
| 130 | if (src.config() != SkBitmap::kARGB_8888_Config) { |
| 131 | return false; |
| 132 | } |
| 133 | |
| 134 | SkAutoLockPixels alp(src); |
| 135 | if (!src.getPixels()) { |
| 136 | return false; |
| 137 | } |
| 138 | |
| 139 | dst->setConfig(src.config(), src.width(), src.height()); |
| 140 | dst->allocPixels(); |
| 141 | |
| 142 | int width = radius().width(); |
| 143 | int height = radius().height(); |
| 144 | |
| 145 | if (width < 0 || height < 0) { |
| 146 | return false; |
| 147 | } |
| 148 | |
| 149 | if (width == 0 && height == 0) { |
| 150 | src.copyTo(dst, dst->config()); |
| 151 | return true; |
| 152 | } |
| 153 | |
| 154 | SkBitmap temp; |
| 155 | temp.setConfig(dst->config(), dst->width(), dst->height()); |
| 156 | if (!temp.allocPixels()) { |
| 157 | return false; |
| 158 | } |
| 159 | |
| 160 | if (width > 0 && height > 0) { |
| 161 | erodeX(src, &temp, width); |
| 162 | erodeY(temp, dst, height); |
| 163 | } else if (width > 0) { |
| 164 | erodeX(src, dst, width); |
| 165 | } else if (height > 0) { |
| 166 | erodeY(src, dst, height); |
| 167 | } |
| 168 | return true; |
| 169 | } |
| 170 | |
| 171 | bool SkDilateImageFilter::onFilterImage(Proxy*, |
| 172 | const SkBitmap& src, const SkMatrix&, |
| 173 | SkBitmap* dst, SkIPoint*) { |
| 174 | if (src.config() != SkBitmap::kARGB_8888_Config) { |
| 175 | return false; |
| 176 | } |
| 177 | |
| 178 | SkAutoLockPixels alp(src); |
| 179 | if (!src.getPixels()) { |
| 180 | return false; |
| 181 | } |
| 182 | |
| 183 | dst->setConfig(src.config(), src.width(), src.height()); |
| 184 | dst->allocPixels(); |
| 185 | |
| 186 | int width = radius().width(); |
| 187 | int height = radius().height(); |
| 188 | |
| 189 | if (width < 0 || height < 0) { |
| 190 | return false; |
| 191 | } |
| 192 | |
| 193 | if (width == 0 && height == 0) { |
| 194 | src.copyTo(dst, dst->config()); |
| 195 | return true; |
| 196 | } |
| 197 | |
| 198 | SkBitmap temp; |
| 199 | temp.setConfig(dst->config(), dst->width(), dst->height()); |
| 200 | if (!temp.allocPixels()) { |
| 201 | return false; |
| 202 | } |
| 203 | |
| 204 | if (width > 0 && height > 0) { |
| 205 | dilateX(src, &temp, width); |
| 206 | dilateY(temp, dst, height); |
| 207 | } else if (width > 0) { |
| 208 | dilateX(src, dst, width); |
| 209 | } else if (height > 0) { |
| 210 | dilateY(src, dst, height); |
| 211 | } |
| 212 | return true; |
| 213 | } |
| 214 | |
senorblanco@chromium.org | 302cffb | 2012-08-01 20:16:34 +0000 | [diff] [blame^] | 215 | GrTexture* SkDilateImageFilter::onFilterImageGPU(GrTexture* src, const SkRect& rect) { |
| 216 | return src->getContext()->applyMorphology(src, rect, |
| 217 | GrContext::kDilate_MorphologyType, |
| 218 | radius()); |
senorblanco@chromium.org | 05054f1 | 2012-03-02 21:05:45 +0000 | [diff] [blame] | 219 | } |
| 220 | |
senorblanco@chromium.org | 302cffb | 2012-08-01 20:16:34 +0000 | [diff] [blame^] | 221 | GrTexture* SkErodeImageFilter::onFilterImageGPU(GrTexture* src, const SkRect& rect) { |
| 222 | return src->getContext()->applyMorphology(src, rect, |
| 223 | GrContext::kErode_MorphologyType, |
| 224 | radius()); |
senorblanco@chromium.org | 05054f1 | 2012-03-02 21:05:45 +0000 | [diff] [blame] | 225 | } |
| 226 | |
| 227 | SK_DEFINE_FLATTENABLE_REGISTRAR(SkDilateImageFilter) |
| 228 | SK_DEFINE_FLATTENABLE_REGISTRAR(SkErodeImageFilter) |