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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 "SkScaledImageCache.h" | 8 #include "SkScaledImageCache.h" |
9 #include "SkMipMap.h" | 9 #include "SkMipMap.h" |
10 #include "SkOnce.h" | 10 #include "SkOnce.h" |
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202 virtual void* onLockPixels(SkColorTable**) SK_OVERRIDE; | 202 virtual void* onLockPixels(SkColorTable**) SK_OVERRIDE; |
203 virtual void onUnlockPixels() SK_OVERRIDE; | 203 virtual void onUnlockPixels() SK_OVERRIDE; |
204 virtual size_t getAllocatedSizeInBytes() const SK_OVERRIDE; | 204 virtual size_t getAllocatedSizeInBytes() const SK_OVERRIDE; |
205 | 205 |
206 private: | 206 private: |
207 SkImageInfo fInfo; // remove when SkPixelRef gets this in baseclass | 207 SkImageInfo fInfo; // remove when SkPixelRef gets this in baseclass |
208 | 208 |
209 SkDiscardableMemory* fDM; | 209 SkDiscardableMemory* fDM; |
210 size_t fRB; | 210 size_t fRB; |
211 bool fFirstTime; | 211 bool fFirstTime; |
212 bool fIsLocked; | |
213 | 212 |
214 typedef SkPixelRef INHERITED; | 213 typedef SkPixelRef INHERITED; |
215 }; | 214 }; |
216 | 215 |
217 SkOneShotDiscardablePixelRef::SkOneShotDiscardablePixelRef(const SkImageInfo& in
fo, | 216 SkOneShotDiscardablePixelRef::SkOneShotDiscardablePixelRef(const SkImageInfo& in
fo, |
218 SkDiscardableMemory* dm, | 217 SkDiscardableMemory* dm, |
219 size_t rowBytes) | 218 size_t rowBytes) |
220 : INHERITED(info) | 219 : INHERITED(info) |
221 , fDM(dm) | 220 , fDM(dm) |
222 , fRB(rowBytes) | 221 , fRB(rowBytes) |
223 { | 222 { |
224 fInfo = info; // remove this redundant field when SkPixelRef has info | 223 fInfo = info; // remove this redundant field when SkPixelRef has info |
225 | 224 |
226 SkASSERT(dm->data()); | 225 SkASSERT(dm->data()); |
227 fFirstTime = true; | 226 fFirstTime = true; |
228 fIsLocked = false; | |
229 } | 227 } |
230 | 228 |
231 SkOneShotDiscardablePixelRef::~SkOneShotDiscardablePixelRef() { | 229 SkOneShotDiscardablePixelRef::~SkOneShotDiscardablePixelRef() { |
232 SkDELETE(fDM); | 230 SkDELETE(fDM); |
233 } | 231 } |
234 | 232 |
235 void* SkOneShotDiscardablePixelRef::onLockPixels(SkColorTable** ctable) { | 233 void* SkOneShotDiscardablePixelRef::onLockPixels(SkColorTable** ctable) { |
236 if (fFirstTime) { | 234 if (fFirstTime) { |
237 // we're already locked | 235 // we're already locked |
| 236 SkASSERT(fDM->data()); |
238 fFirstTime = false; | 237 fFirstTime = false; |
239 return fDM->data(); | 238 return fDM->data(); |
240 } | 239 } |
241 | 240 |
242 // A previous call to onUnlock may have deleted our DM, so check for that | 241 // A previous call to onUnlock may have deleted our DM, so check for that |
243 if (NULL == fDM) { | 242 if (NULL == fDM) { |
244 return NULL; | 243 return NULL; |
245 } | 244 } |
246 | 245 |
247 if (!fDM->lock()) { | 246 if (!fDM->lock()) { |
248 // since it failed, we delete it now, to free-up the resource | 247 // since it failed, we delete it now, to free-up the resource |
249 delete fDM; | 248 delete fDM; |
250 fDM = NULL; | 249 fDM = NULL; |
251 return NULL; | 250 return NULL; |
252 } | 251 } |
253 return fDM->data(); | 252 return fDM->data(); |
254 } | 253 } |
255 | 254 |
256 void SkOneShotDiscardablePixelRef::onUnlockPixels() { | 255 void SkOneShotDiscardablePixelRef::onUnlockPixels() { |
257 SkASSERT(!fFirstTime); | 256 SkASSERT(!fFirstTime); |
258 if (fIsLocked) { | 257 fDM->unlock(); |
259 fIsLocked = false; | |
260 fDM->unlock(); | |
261 } | |
262 } | 258 } |
263 | 259 |
264 size_t SkOneShotDiscardablePixelRef::getAllocatedSizeInBytes() const { | 260 size_t SkOneShotDiscardablePixelRef::getAllocatedSizeInBytes() const { |
265 return fInfo.fHeight * fRB; | 261 return fInfo.fHeight * fRB; |
266 } | 262 } |
267 | 263 |
268 class SkScaledImageCacheDiscardableAllocator : public SkBitmap::Allocator { | 264 class SkScaledImageCacheDiscardableAllocator : public SkBitmap::Allocator { |
269 public: | 265 public: |
270 SkScaledImageCacheDiscardableAllocator( | 266 SkScaledImageCacheDiscardableAllocator( |
271 SkScaledImageCache::DiscardableFactory factory) { | 267 SkScaledImageCache::DiscardableFactory factory) { |
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794 return SkScaledImageCache::GetBytesUsed(); | 790 return SkScaledImageCache::GetBytesUsed(); |
795 } | 791 } |
796 | 792 |
797 size_t SkGraphics::GetImageCacheByteLimit() { | 793 size_t SkGraphics::GetImageCacheByteLimit() { |
798 return SkScaledImageCache::GetByteLimit(); | 794 return SkScaledImageCache::GetByteLimit(); |
799 } | 795 } |
800 | 796 |
801 size_t SkGraphics::SetImageCacheByteLimit(size_t newLimit) { | 797 size_t SkGraphics::SetImageCacheByteLimit(size_t newLimit) { |
802 return SkScaledImageCache::SetByteLimit(newLimit); | 798 return SkScaledImageCache::SetByteLimit(newLimit); |
803 } | 799 } |
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