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Side by Side Diff: src/core/SkMipMap.cpp

Issue 137753017: move all Config specific APIs into SkBitmapConfig.cpp -- Config is deprecated (Closed) Base URL: https://skia.googlecode.com/svn/trunk
Patch Set: Created 6 years, 10 months ago
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1 /* 1 /*
2 * Copyright 2013 Google Inc. 2 * Copyright 2013 Google Inc.
3 * 3 *
4 * Use of this source code is governed by a BSD-style license that can be 4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file. 5 * found in the LICENSE file.
6 */ 6 */
7 7
8 #include "SkMipMap.h" 8 #include "SkMipMap.h"
9 #include "SkBitmap.h" 9 #include "SkBitmap.h"
10 #include "SkColorPriv.h" 10 #include "SkColorPriv.h"
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116 int64_t size = sk_64_mul(levelCount + 1, sizeof(Level)) + pixelSize; 116 int64_t size = sk_64_mul(levelCount + 1, sizeof(Level)) + pixelSize;
117 if (!sk_64_isS32(size)) { 117 if (!sk_64_isS32(size)) {
118 return NULL; 118 return NULL;
119 } 119 }
120 return (Level*)sk_malloc_throw(sk_64_asS32(size)); 120 return (Level*)sk_malloc_throw(sk_64_asS32(size));
121 } 121 }
122 122
123 SkMipMap* SkMipMap::Build(const SkBitmap& src) { 123 SkMipMap* SkMipMap::Build(const SkBitmap& src) {
124 void (*proc)(SkBitmap* dst, int x, int y, const SkBitmap& src); 124 void (*proc)(SkBitmap* dst, int x, int y, const SkBitmap& src);
125 125
126 const SkBitmap::Config config = src.config(); 126 const SkColorType ct = src.colorType();
127 switch (config) { 127 switch (ct) {
128 case SkBitmap::kARGB_8888_Config: 128 case kRGBA_8888_SkColorType:
129 case kBGRA_8888_SkColorType:
129 proc = downsampleby2_proc32; 130 proc = downsampleby2_proc32;
130 break; 131 break;
131 case SkBitmap::kRGB_565_Config: 132 case kRGB_565_SkColorType:
132 proc = downsampleby2_proc16; 133 proc = downsampleby2_proc16;
133 break; 134 break;
134 case SkBitmap::kARGB_4444_Config: 135 case kARGB_4444_SkColorType:
135 proc = downsampleby2_proc4444; 136 proc = downsampleby2_proc4444;
136 break; 137 break;
137 case SkBitmap::kIndex8_Config:
138 case SkBitmap::kA8_Config:
139 default: 138 default:
140 return NULL; // don't build mipmaps for these configs 139 return NULL; // don't build mipmaps for these configs
141 } 140 }
142 141
143 SkAutoLockPixels alp(src); 142 SkAutoLockPixels alp(src);
144 if (!src.readyToDraw()) { 143 if (!src.readyToDraw()) {
145 return NULL; 144 return NULL;
146 } 145 }
147 146
148 // whip through our loop to compute the exact size needed 147 // whip through our loop to compute the exact size needed
149 size_t size = 0; 148 size_t size = 0;
150 int countLevels = 0; 149 int countLevels = 0;
151 { 150 {
152 int width = src.width(); 151 int width = src.width();
153 int height = src.height(); 152 int height = src.height();
154 for (;;) { 153 for (;;) {
155 width >>= 1; 154 width >>= 1;
156 height >>= 1; 155 height >>= 1;
157 if (0 == width || 0 == height) { 156 if (0 == width || 0 == height) {
158 break; 157 break;
159 } 158 }
160 size += SkBitmap::ComputeRowBytes(config, width) * height; 159 size += SkColorTypeMinRowBytes(ct, width) * height;
161 countLevels += 1; 160 countLevels += 1;
162 } 161 }
163 } 162 }
164 if (0 == countLevels) { 163 if (0 == countLevels) {
165 return NULL; 164 return NULL;
166 } 165 }
167 166
168 Level* levels = SkMipMap::AllocLevels(countLevels, size); 167 Level* levels = SkMipMap::AllocLevels(countLevels, size);
169 if (NULL == levels) { 168 if (NULL == levels) {
170 return NULL; 169 return NULL;
171 } 170 }
172 171
173 uint8_t* baseAddr = (uint8_t*)&levels[countLevels]; 172 uint8_t* baseAddr = (uint8_t*)&levels[countLevels];
174 uint8_t* addr = baseAddr; 173 uint8_t* addr = baseAddr;
175 int width = src.width(); 174 int width = src.width();
176 int height = src.height(); 175 int height = src.height();
177 uint32_t rowBytes; 176 uint32_t rowBytes;
178 SkBitmap srcBM(src); 177 SkBitmap srcBM(src);
179 178
180 for (int i = 0; i < countLevels; ++i) { 179 for (int i = 0; i < countLevels; ++i) {
181 width >>= 1; 180 width >>= 1;
182 height >>= 1; 181 height >>= 1;
183 rowBytes = SkToU32(SkBitmap::ComputeRowBytes(config, width)); 182 rowBytes = SkToU32(SkColorTypeMinRowBytes(ct, width));
184 183
185 levels[i].fPixels = addr; 184 levels[i].fPixels = addr;
186 levels[i].fWidth = width; 185 levels[i].fWidth = width;
187 levels[i].fHeight = height; 186 levels[i].fHeight = height;
188 levels[i].fRowBytes = rowBytes; 187 levels[i].fRowBytes = rowBytes;
189 levels[i].fScale = (float)width / src.width(); 188 levels[i].fScale = (float)width / src.width();
190 189
190 SkImageInfo info = SkImageInfo::Make(width, height, ct,
191 srcBM.alphaType());
191 SkBitmap dstBM; 192 SkBitmap dstBM;
192 dstBM.setConfig(config, width, height, rowBytes); 193 dstBM.installPixels(info, addr, rowBytes, NULL, NULL);
193 dstBM.setPixels(addr); 194 dstBM.lockPixels();
194 195
195 srcBM.lockPixels(); 196 srcBM.lockPixels();
196 for (int y = 0; y < height; y++) { 197 for (int y = 0; y < height; y++) {
197 for (int x = 0; x < width; x++) { 198 for (int x = 0; x < width; x++) {
198 proc(&dstBM, x, y, srcBM); 199 proc(&dstBM, x, y, srcBM);
199 } 200 }
200 } 201 }
201 srcBM.unlockPixels(); 202 srcBM.unlockPixels();
202 203
203 srcBM = dstBM; 204 srcBM = dstBM;
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247 } 248 }
248 249
249 if (level > fCount) { 250 if (level > fCount) {
250 level = fCount; 251 level = fCount;
251 } 252 }
252 if (levelPtr) { 253 if (levelPtr) {
253 *levelPtr = fLevels[level - 1]; 254 *levelPtr = fLevels[level - 1];
254 } 255 }
255 return true; 256 return true;
256 } 257 }
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