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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 "SkDiscardablePixelRef.h" | 8 #include "SkDiscardablePixelRef.h" |
| 9 #include "SkDiscardableMemory.h" | 9 #include "SkDiscardableMemory.h" |
| 10 #include "SkImageGenerator.h" | 10 #include "SkImageGenerator.h" |
| (...skipping 15 matching lines...) Expand all Loading... |
| 26 // decode the same image on each call to getPixels(). | 26 // decode the same image on each call to getPixels(). |
| 27 this->setImmutable(); | 27 this->setImmutable(); |
| 28 SkSafeRef(fDMFactory); | 28 SkSafeRef(fDMFactory); |
| 29 } | 29 } |
| 30 | 30 |
| 31 SkDiscardablePixelRef::~SkDiscardablePixelRef() { | 31 SkDiscardablePixelRef::~SkDiscardablePixelRef() { |
| 32 if (fDiscardableMemoryIsLocked) { | 32 if (fDiscardableMemoryIsLocked) { |
| 33 fDiscardableMemory->unlock(); | 33 fDiscardableMemory->unlock(); |
| 34 fDiscardableMemoryIsLocked = false; | 34 fDiscardableMemoryIsLocked = false; |
| 35 } | 35 } |
| 36 SkDELETE(fDiscardableMemory); | 36 delete fDiscardableMemory; |
| 37 SkSafeUnref(fDMFactory); | 37 SkSafeUnref(fDMFactory); |
| 38 SkDELETE(fGenerator); | 38 delete fGenerator; |
| 39 } | 39 } |
| 40 | 40 |
| 41 bool SkDiscardablePixelRef::onNewLockPixels(LockRec* rec) { | 41 bool SkDiscardablePixelRef::onNewLockPixels(LockRec* rec) { |
| 42 if (fDiscardableMemory != NULL) { | 42 if (fDiscardableMemory != NULL) { |
| 43 if (fDiscardableMemory->lock()) { | 43 if (fDiscardableMemory->lock()) { |
| 44 fDiscardableMemoryIsLocked = true; | 44 fDiscardableMemoryIsLocked = true; |
| 45 rec->fPixels = fDiscardableMemory->data(); | 45 rec->fPixels = fDiscardableMemory->data(); |
| 46 rec->fColorTable = fCTable.get(); | 46 rec->fColorTable = fCTable.get(); |
| 47 rec->fRowBytes = fRowBytes; | 47 rec->fRowBytes = fRowBytes; |
| 48 return true; | 48 return true; |
| 49 } | 49 } |
| 50 SkDELETE(fDiscardableMemory); | 50 delete fDiscardableMemory; |
| 51 fDiscardableMemory = NULL; | 51 fDiscardableMemory = NULL; |
| 52 fDiscardableMemoryIsLocked = false; | 52 fDiscardableMemoryIsLocked = false; |
| 53 } | 53 } |
| 54 | 54 |
| 55 const size_t size = this->info().getSafeSize(fRowBytes); | 55 const size_t size = this->info().getSafeSize(fRowBytes); |
| 56 | 56 |
| 57 if (fDMFactory != NULL) { | 57 if (fDMFactory != NULL) { |
| 58 fDiscardableMemory = fDMFactory->create(size); | 58 fDiscardableMemory = fDMFactory->create(size); |
| 59 fDiscardableMemoryIsLocked = true; | 59 fDiscardableMemoryIsLocked = true; |
| 60 } else { | 60 } else { |
| 61 fDiscardableMemory = SkDiscardableMemory::Create(size); | 61 fDiscardableMemory = SkDiscardableMemory::Create(size); |
| 62 fDiscardableMemoryIsLocked = true; | 62 fDiscardableMemoryIsLocked = true; |
| 63 } | 63 } |
| 64 if (NULL == fDiscardableMemory) { | 64 if (NULL == fDiscardableMemory) { |
| 65 fDiscardableMemoryIsLocked = false; | 65 fDiscardableMemoryIsLocked = false; |
| 66 return false; // Memory allocation failed. | 66 return false; // Memory allocation failed. |
| 67 } | 67 } |
| 68 | 68 |
| 69 void* pixels = fDiscardableMemory->data(); | 69 void* pixels = fDiscardableMemory->data(); |
| 70 const SkImageInfo& info = this->info(); | 70 const SkImageInfo& info = this->info(); |
| 71 SkPMColor colors[256]; | 71 SkPMColor colors[256]; |
| 72 int colorCount = 0; | 72 int colorCount = 0; |
| 73 | 73 |
| 74 if (!fGenerator->getPixels(info, pixels, fRowBytes, colors, &colorCount)) { | 74 if (!fGenerator->getPixels(info, pixels, fRowBytes, colors, &colorCount)) { |
| 75 fDiscardableMemory->unlock(); | 75 fDiscardableMemory->unlock(); |
| 76 fDiscardableMemoryIsLocked = false; | 76 fDiscardableMemoryIsLocked = false; |
| 77 SkDELETE(fDiscardableMemory); | 77 delete fDiscardableMemory; |
| 78 fDiscardableMemory = NULL; | 78 fDiscardableMemory = NULL; |
| 79 return false; | 79 return false; |
| 80 } | 80 } |
| 81 | 81 |
| 82 // Note: our ctable is not purgeable, as it is not stored in the discardable
memory block. | 82 // Note: our ctable is not purgeable, as it is not stored in the discardable
memory block. |
| 83 // This is because SkColorTable is refcntable, and therefore our caller coul
d hold onto it | 83 // This is because SkColorTable is refcntable, and therefore our caller coul
d hold onto it |
| 84 // beyond the scope of a lock/unlock. If we change the API/lifecycle for SkC
olorTable, we | 84 // beyond the scope of a lock/unlock. If we change the API/lifecycle for SkC
olorTable, we |
| 85 // could move it into the block, but then again perhaps it is small enough t
hat this doesn't | 85 // could move it into the block, but then again perhaps it is small enough t
hat this doesn't |
| 86 // really matter. | 86 // really matter. |
| 87 if (colorCount > 0) { | 87 if (colorCount > 0) { |
| 88 fCTable.reset(SkNEW_ARGS(SkColorTable, (colors, colorCount))); | 88 fCTable.reset(new SkColorTable(colors, colorCount)); |
| 89 } else { | 89 } else { |
| 90 fCTable.reset(NULL); | 90 fCTable.reset(NULL); |
| 91 } | 91 } |
| 92 | 92 |
| 93 rec->fPixels = pixels; | 93 rec->fPixels = pixels; |
| 94 rec->fColorTable = fCTable.get(); | 94 rec->fColorTable = fCTable.get(); |
| 95 rec->fRowBytes = fRowBytes; | 95 rec->fRowBytes = fRowBytes; |
| 96 return true; | 96 return true; |
| 97 } | 97 } |
| 98 | 98 |
| (...skipping 31 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 130 return false; | 130 return false; |
| 131 } | 131 } |
| 132 | 132 |
| 133 // Since dst->setInfo() may have changed/fixed-up info, we check from the bi
tmap | 133 // Since dst->setInfo() may have changed/fixed-up info, we check from the bi
tmap |
| 134 SkASSERT(dst->info().colorType() != kUnknown_SkColorType); | 134 SkASSERT(dst->info().colorType() != kUnknown_SkColorType); |
| 135 | 135 |
| 136 if (dst->empty()) { // Use a normal pixelref. | 136 if (dst->empty()) { // Use a normal pixelref. |
| 137 return dst->tryAllocPixels(); | 137 return dst->tryAllocPixels(); |
| 138 } | 138 } |
| 139 SkAutoTUnref<SkDiscardablePixelRef> ref( | 139 SkAutoTUnref<SkDiscardablePixelRef> ref( |
| 140 SkNEW_ARGS(SkDiscardablePixelRef, | 140 new SkDiscardablePixelRef(prInfo, autoGenerator.detach(), dst->rowBy
tes(), factory)); |
| 141 (prInfo, autoGenerator.detach(), dst->rowBytes(), factory))); | |
| 142 dst->setPixelRef(ref, origin.x(), origin.y()); | 141 dst->setPixelRef(ref, origin.x(), origin.y()); |
| 143 return true; | 142 return true; |
| 144 } | 143 } |
| 145 | 144 |
| 146 // These are the public API | 145 // These are the public API |
| 147 | 146 |
| 148 bool SkInstallDiscardablePixelRef(SkImageGenerator* generator, SkBitmap* dst) { | 147 bool SkInstallDiscardablePixelRef(SkImageGenerator* generator, SkBitmap* dst) { |
| 149 return SkInstallDiscardablePixelRef(generator, NULL, dst, NULL); | 148 return SkInstallDiscardablePixelRef(generator, NULL, dst, NULL); |
| 150 } | 149 } |
| 151 | 150 |
| 152 bool SkInstallDiscardablePixelRef(SkData* encoded, SkBitmap* dst) { | 151 bool SkInstallDiscardablePixelRef(SkData* encoded, SkBitmap* dst) { |
| 153 SkImageGenerator* generator = SkImageGenerator::NewFromEncoded(encoded); | 152 SkImageGenerator* generator = SkImageGenerator::NewFromEncoded(encoded); |
| 154 return generator ? SkInstallDiscardablePixelRef(generator, NULL, dst, NULL)
: false; | 153 return generator ? SkInstallDiscardablePixelRef(generator, NULL, dst, NULL)
: false; |
| 155 } | 154 } |
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