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" |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 11 | #if SK_SUPPORT_GPU |
senorblanco@chromium.org | 302cffb | 2012-08-01 20:16:34 +0000 | [diff] [blame] | 12 | #include "GrContext.h" |
| 13 | #include "GrTexture.h" |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 14 | #endif |
senorblanco@chromium.org | 05054f1 | 2012-03-02 21:05:45 +0000 | [diff] [blame] | 15 | |
| 16 | SkMorphologyImageFilter::SkMorphologyImageFilter(SkFlattenableReadBuffer& buffer) |
| 17 | : INHERITED(buffer) { |
tomhudson@google.com | 7558925 | 2012-04-10 17:42:21 +0000 | [diff] [blame] | 18 | fRadius.fWidth = buffer.readInt(); |
| 19 | fRadius.fHeight = buffer.readInt(); |
senorblanco@chromium.org | 05054f1 | 2012-03-02 21:05:45 +0000 | [diff] [blame] | 20 | } |
| 21 | |
| 22 | SkMorphologyImageFilter::SkMorphologyImageFilter(int radiusX, int radiusY) |
| 23 | : fRadius(SkISize::Make(radiusX, radiusY)) { |
| 24 | } |
| 25 | |
| 26 | |
djsollen@google.com | 5492424 | 2012-03-29 15:18:04 +0000 | [diff] [blame] | 27 | void SkMorphologyImageFilter::flatten(SkFlattenableWriteBuffer& buffer) const { |
senorblanco@chromium.org | 05054f1 | 2012-03-02 21:05:45 +0000 | [diff] [blame] | 28 | this->INHERITED::flatten(buffer); |
tomhudson@google.com | 7558925 | 2012-04-10 17:42:21 +0000 | [diff] [blame] | 29 | buffer.writeInt(fRadius.fWidth); |
| 30 | buffer.writeInt(fRadius.fHeight); |
senorblanco@chromium.org | 05054f1 | 2012-03-02 21:05:45 +0000 | [diff] [blame] | 31 | } |
| 32 | |
| 33 | static void erode(const SkPMColor* src, SkPMColor* dst, |
| 34 | int radius, int width, int height, |
| 35 | int srcStrideX, int srcStrideY, |
| 36 | int dstStrideX, int dstStrideY) |
| 37 | { |
senorblanco@chromium.org | 56dd630 | 2012-04-10 17:25:44 +0000 | [diff] [blame] | 38 | radius = SkMin32(radius, width - 1); |
| 39 | const SkPMColor* upperSrc = src + radius * srcStrideX; |
senorblanco@chromium.org | 05054f1 | 2012-03-02 21:05:45 +0000 | [diff] [blame] | 40 | for (int x = 0; x < width; ++x) { |
| 41 | const SkPMColor* lp = src; |
| 42 | const SkPMColor* up = upperSrc; |
| 43 | SkPMColor* dptr = dst; |
| 44 | for (int y = 0; y < height; ++y) { |
| 45 | int minB = 255, minG = 255, minR = 255, minA = 255; |
| 46 | for (const SkPMColor* p = lp; p <= up; p += srcStrideX) { |
| 47 | int b = SkGetPackedB32(*p); |
| 48 | int g = SkGetPackedG32(*p); |
| 49 | int r = SkGetPackedR32(*p); |
| 50 | int a = SkGetPackedA32(*p); |
| 51 | if (b < minB) minB = b; |
| 52 | if (g < minG) minG = g; |
| 53 | if (r < minR) minR = r; |
| 54 | if (a < minA) minA = a; |
| 55 | } |
| 56 | *dptr = SkPackARGB32(minA, minR, minG, minB); |
| 57 | dptr += dstStrideY; |
| 58 | lp += srcStrideY; |
| 59 | up += srcStrideY; |
| 60 | } |
| 61 | if (x >= radius) src += srcStrideX; |
| 62 | if (x + radius < width - 1) upperSrc += srcStrideX; |
| 63 | dst += dstStrideX; |
| 64 | } |
| 65 | } |
| 66 | |
| 67 | static void erodeX(const SkBitmap& src, SkBitmap* dst, int radiusX) |
| 68 | { |
| 69 | erode(src.getAddr32(0, 0), dst->getAddr32(0, 0), |
| 70 | radiusX, src.width(), src.height(), |
| 71 | 1, src.rowBytesAsPixels(), 1, dst->rowBytesAsPixels()); |
| 72 | } |
| 73 | |
| 74 | static void erodeY(const SkBitmap& src, SkBitmap* dst, int radiusY) |
| 75 | { |
| 76 | erode(src.getAddr32(0, 0), dst->getAddr32(0, 0), |
| 77 | radiusY, src.height(), src.width(), |
| 78 | src.rowBytesAsPixels(), 1, dst->rowBytesAsPixels(), 1); |
| 79 | } |
| 80 | |
| 81 | static void dilate(const SkPMColor* src, SkPMColor* dst, |
| 82 | int radius, int width, int height, |
| 83 | int srcStrideX, int srcStrideY, |
| 84 | int dstStrideX, int dstStrideY) |
| 85 | { |
senorblanco@chromium.org | 56dd630 | 2012-04-10 17:25:44 +0000 | [diff] [blame] | 86 | radius = SkMin32(radius, width - 1); |
| 87 | const SkPMColor* upperSrc = src + radius * srcStrideX; |
senorblanco@chromium.org | 05054f1 | 2012-03-02 21:05:45 +0000 | [diff] [blame] | 88 | for (int x = 0; x < width; ++x) { |
| 89 | const SkPMColor* lp = src; |
| 90 | const SkPMColor* up = upperSrc; |
| 91 | SkPMColor* dptr = dst; |
| 92 | for (int y = 0; y < height; ++y) { |
| 93 | int maxB = 0, maxG = 0, maxR = 0, maxA = 0; |
| 94 | for (const SkPMColor* p = lp; p <= up; p += srcStrideX) { |
| 95 | int b = SkGetPackedB32(*p); |
| 96 | int g = SkGetPackedG32(*p); |
| 97 | int r = SkGetPackedR32(*p); |
| 98 | int a = SkGetPackedA32(*p); |
| 99 | if (b > maxB) maxB = b; |
| 100 | if (g > maxG) maxG = g; |
| 101 | if (r > maxR) maxR = r; |
| 102 | if (a > maxA) maxA = a; |
| 103 | } |
| 104 | *dptr = SkPackARGB32(maxA, maxR, maxG, maxB); |
| 105 | dptr += dstStrideY; |
| 106 | lp += srcStrideY; |
| 107 | up += srcStrideY; |
| 108 | } |
| 109 | if (x >= radius) src += srcStrideX; |
| 110 | if (x + radius < width - 1) upperSrc += srcStrideX; |
| 111 | dst += dstStrideX; |
| 112 | } |
| 113 | } |
| 114 | |
| 115 | static void dilateX(const SkBitmap& src, SkBitmap* dst, int radiusX) |
| 116 | { |
| 117 | dilate(src.getAddr32(0, 0), dst->getAddr32(0, 0), |
| 118 | radiusX, src.width(), src.height(), |
| 119 | 1, src.rowBytesAsPixels(), 1, dst->rowBytesAsPixels()); |
| 120 | } |
| 121 | |
| 122 | static void dilateY(const SkBitmap& src, SkBitmap* dst, int radiusY) |
| 123 | { |
| 124 | dilate(src.getAddr32(0, 0), dst->getAddr32(0, 0), |
| 125 | radiusY, src.height(), src.width(), |
| 126 | src.rowBytesAsPixels(), 1, dst->rowBytesAsPixels(), 1); |
| 127 | } |
| 128 | |
| 129 | bool SkErodeImageFilter::onFilterImage(Proxy*, |
| 130 | const SkBitmap& src, const SkMatrix&, |
| 131 | SkBitmap* dst, SkIPoint*) { |
| 132 | if (src.config() != SkBitmap::kARGB_8888_Config) { |
| 133 | return false; |
| 134 | } |
| 135 | |
| 136 | SkAutoLockPixels alp(src); |
| 137 | if (!src.getPixels()) { |
| 138 | return false; |
| 139 | } |
| 140 | |
| 141 | dst->setConfig(src.config(), src.width(), src.height()); |
| 142 | dst->allocPixels(); |
| 143 | |
| 144 | int width = radius().width(); |
| 145 | int height = radius().height(); |
| 146 | |
| 147 | if (width < 0 || height < 0) { |
| 148 | return false; |
| 149 | } |
| 150 | |
| 151 | if (width == 0 && height == 0) { |
| 152 | src.copyTo(dst, dst->config()); |
| 153 | return true; |
| 154 | } |
| 155 | |
| 156 | SkBitmap temp; |
| 157 | temp.setConfig(dst->config(), dst->width(), dst->height()); |
| 158 | if (!temp.allocPixels()) { |
| 159 | return false; |
| 160 | } |
| 161 | |
| 162 | if (width > 0 && height > 0) { |
| 163 | erodeX(src, &temp, width); |
| 164 | erodeY(temp, dst, height); |
| 165 | } else if (width > 0) { |
| 166 | erodeX(src, dst, width); |
| 167 | } else if (height > 0) { |
| 168 | erodeY(src, dst, height); |
| 169 | } |
| 170 | return true; |
| 171 | } |
| 172 | |
| 173 | bool SkDilateImageFilter::onFilterImage(Proxy*, |
| 174 | const SkBitmap& src, const SkMatrix&, |
| 175 | SkBitmap* dst, SkIPoint*) { |
| 176 | if (src.config() != SkBitmap::kARGB_8888_Config) { |
| 177 | return false; |
| 178 | } |
| 179 | |
| 180 | SkAutoLockPixels alp(src); |
| 181 | if (!src.getPixels()) { |
| 182 | return false; |
| 183 | } |
| 184 | |
| 185 | dst->setConfig(src.config(), src.width(), src.height()); |
| 186 | dst->allocPixels(); |
| 187 | |
| 188 | int width = radius().width(); |
| 189 | int height = radius().height(); |
| 190 | |
| 191 | if (width < 0 || height < 0) { |
| 192 | return false; |
| 193 | } |
| 194 | |
| 195 | if (width == 0 && height == 0) { |
| 196 | src.copyTo(dst, dst->config()); |
| 197 | return true; |
| 198 | } |
| 199 | |
| 200 | SkBitmap temp; |
| 201 | temp.setConfig(dst->config(), dst->width(), dst->height()); |
| 202 | if (!temp.allocPixels()) { |
| 203 | return false; |
| 204 | } |
| 205 | |
| 206 | if (width > 0 && height > 0) { |
| 207 | dilateX(src, &temp, width); |
| 208 | dilateY(temp, dst, height); |
| 209 | } else if (width > 0) { |
| 210 | dilateX(src, dst, width); |
| 211 | } else if (height > 0) { |
| 212 | dilateY(src, dst, height); |
| 213 | } |
| 214 | return true; |
| 215 | } |
| 216 | |
senorblanco@chromium.org | 302cffb | 2012-08-01 20:16:34 +0000 | [diff] [blame] | 217 | GrTexture* SkDilateImageFilter::onFilterImageGPU(GrTexture* src, const SkRect& rect) { |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 218 | #if SK_SUPPORT_GPU |
senorblanco@chromium.org | 302cffb | 2012-08-01 20:16:34 +0000 | [diff] [blame] | 219 | return src->getContext()->applyMorphology(src, rect, |
| 220 | GrContext::kDilate_MorphologyType, |
| 221 | radius()); |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 222 | #else |
| 223 | SkDEBUGFAIL("Should not call in GPU-less build"); |
| 224 | return NULL; |
| 225 | #endif |
senorblanco@chromium.org | 05054f1 | 2012-03-02 21:05:45 +0000 | [diff] [blame] | 226 | } |
| 227 | |
senorblanco@chromium.org | 302cffb | 2012-08-01 20:16:34 +0000 | [diff] [blame] | 228 | GrTexture* SkErodeImageFilter::onFilterImageGPU(GrTexture* src, const SkRect& rect) { |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 229 | #if SK_SUPPORT_GPU |
senorblanco@chromium.org | 302cffb | 2012-08-01 20:16:34 +0000 | [diff] [blame] | 230 | return src->getContext()->applyMorphology(src, rect, |
| 231 | GrContext::kErode_MorphologyType, |
| 232 | radius()); |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 233 | #else |
| 234 | SkDEBUGFAIL("Should not call in GPU-less build"); |
| 235 | return NULL; |
| 236 | #endif |
senorblanco@chromium.org | 05054f1 | 2012-03-02 21:05:45 +0000 | [diff] [blame] | 237 | } |
| 238 | |
| 239 | SK_DEFINE_FLATTENABLE_REGISTRAR(SkDilateImageFilter) |
| 240 | SK_DEFINE_FLATTENABLE_REGISTRAR(SkErodeImageFilter) |