The Tor Browser / file comparison
comparison: gfx/skia/trunk/src/pipe/utils/SamplePipeControllers.cpp
gfx/skia/trunk/src/pipe/utils/SamplePipeControllers.cpp
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
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| -1:000000000000 | 0:8b892f9031c6 |
|---|---|
| 1 /* | |
| 2 * Copyright 2012 Google Inc. | |
| 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 "SamplePipeControllers.h" | |
| 9 | |
| 10 #include "SkBitmapDevice.h" | |
| 11 #include "SkCanvas.h" | |
| 12 #include "SkGPipe.h" | |
| 13 #include "SkMatrix.h" | |
| 14 | |
| 15 PipeController::PipeController(SkCanvas* target, SkPicture::InstallPixelRefProc proc) | |
| 16 :fReader(target) { | |
| 17 fBlock = NULL; | |
| 18 fBlockSize = fBytesWritten = 0; | |
| 19 fReader.setBitmapDecoder(proc); | |
| 20 } | |
| 21 | |
| 22 PipeController::~PipeController() { | |
| 23 sk_free(fBlock); | |
| 24 } | |
| 25 | |
| 26 void* PipeController::requestBlock(size_t minRequest, size_t *actual) { | |
| 27 sk_free(fBlock); | |
| 28 fBlockSize = minRequest * 4; | |
| 29 fBlock = sk_malloc_throw(fBlockSize); | |
| 30 fBytesWritten = 0; | |
| 31 *actual = fBlockSize; | |
| 32 return fBlock; | |
| 33 } | |
| 34 | |
| 35 void PipeController::notifyWritten(size_t bytes) { | |
| 36 fStatus = fReader.playback(this->getData(), bytes); | |
| 37 SkASSERT(SkGPipeReader::kError_Status != fStatus); | |
| 38 fBytesWritten += bytes; | |
| 39 } | |
| 40 | |
| 41 //////////////////////////////////////////////////////////////////////////////// | |
| 42 | |
| 43 TiledPipeController::TiledPipeController(const SkBitmap& bitmap, | |
| 44 SkPicture::InstallPixelRefProc proc, | |
| 45 const SkMatrix* initial) | |
| 46 : INHERITED(NULL, proc) { | |
| 47 int32_t top = 0; | |
| 48 int32_t bottom; | |
| 49 int32_t height = bitmap.height() / NumberOfTiles; | |
| 50 SkIRect rect; | |
| 51 for (int i = 0; i < NumberOfTiles; i++) { | |
| 52 bottom = i + 1 == NumberOfTiles ? bitmap.height() : top + height; | |
| 53 rect.setLTRB(0, top, bitmap.width(), bottom); | |
| 54 top = bottom; | |
| 55 | |
| 56 SkDEBUGCODE(bool extracted = )bitmap.extractSubset(&fBitmaps[i], rect); | |
| 57 SkASSERT(extracted); | |
| 58 SkBaseDevice* device = new SkBitmapDevice(fBitmaps[i]); | |
| 59 SkCanvas* canvas = new SkCanvas(device); | |
| 60 device->unref(); | |
| 61 if (initial != NULL) { | |
| 62 canvas->setMatrix(*initial); | |
| 63 } | |
| 64 canvas->translate(SkIntToScalar(-rect.left()), | |
| 65 SkIntToScalar(-rect.top())); | |
| 66 if (0 == i) { | |
| 67 fReader.setCanvas(canvas); | |
| 68 } else { | |
| 69 fReaders[i - 1].setCanvas(canvas); | |
| 70 fReaders[i - 1].setBitmapDecoder(proc); | |
| 71 } | |
| 72 canvas->unref(); | |
| 73 } | |
| 74 } | |
| 75 | |
| 76 void TiledPipeController::notifyWritten(size_t bytes) { | |
| 77 for (int i = 0; i < NumberOfTiles - 1; i++) { | |
| 78 fReaders[i].playback(this->getData(), bytes); | |
| 79 } | |
| 80 this->INHERITED::notifyWritten(bytes); | |
| 81 } | |
| 82 | |
| 83 //////////////////////////////////////////////////////////////////////////////// | |
| 84 | |
| 85 ThreadSafePipeController::ThreadSafePipeController(int numberOfReaders) | |
| 86 : fAllocator(kMinBlockSize) | |
| 87 , fNumberOfReaders(numberOfReaders) { | |
| 88 fBlock = NULL; | |
| 89 fBytesWritten = 0; | |
| 90 } | |
| 91 | |
| 92 void* ThreadSafePipeController::requestBlock(size_t minRequest, size_t *actual) { | |
| 93 if (fBlock) { | |
| 94 // Save the previous block for later | |
| 95 PipeBlock previousBloc(fBlock, fBytesWritten); | |
| 96 fBlockList.push(previousBloc); | |
| 97 } | |
| 98 int32_t blockSize = SkMax32(SkToS32(minRequest), kMinBlockSize); | |
| 99 fBlock = fAllocator.allocThrow(blockSize); | |
| 100 fBytesWritten = 0; | |
| 101 *actual = blockSize; | |
| 102 return fBlock; | |
| 103 } | |
| 104 | |
| 105 void ThreadSafePipeController::notifyWritten(size_t bytes) { | |
| 106 fBytesWritten += bytes; | |
| 107 } | |
| 108 | |
| 109 void ThreadSafePipeController::draw(SkCanvas* target) { | |
| 110 SkGPipeReader reader(target); | |
| 111 for (int currentBlock = 0; currentBlock < fBlockList.count(); currentBlock++ ) { | |
| 112 reader.playback(fBlockList[currentBlock].fBlock, fBlockList[currentBlock].fBytes); | |
| 113 } | |
| 114 | |
| 115 if (fBlock) { | |
| 116 reader.playback(fBlock, fBytesWritten); | |
| 117 } | |
| 118 } |
