1 2 /* 3 * Copyright 2011 Google Inc. 4 * 5 * Use of this source code is governed by a BSD-style license that can be 6 * found in the LICENSE file. 7 */ 8 #include "SkPictureFlat.h" 9 10 #include "SkChecksum.h" 11 #include "SkColorFilter.h" 12 #include "SkDrawLooper.h" 13 #include "SkMaskFilter.h" 14 #include "SkRasterizer.h" 15 #include "SkShader.h" 16 #include "SkTypeface.h" 17 #include "SkXfermode.h" 18 19 SK_DEFINE_INST_COUNT(SkFlatController) 20 21 /////////////////////////////////////////////////////////////////////////////// 22 23 SkTypefacePlayback::SkTypefacePlayback() : fCount(0), fArray(NULL) {} 24 25 SkTypefacePlayback::~SkTypefacePlayback() { 26 this->reset(NULL); 27 } 28 29 void SkTypefacePlayback::reset(const SkRefCntSet* rec) { 30 for (int i = 0; i < fCount; i++) { 31 SkASSERT(fArray[i]); 32 fArray[i]->unref(); 33 } 34 SkDELETE_ARRAY(fArray); 35 36 if (rec!= NULL && rec->count() > 0) { 37 fCount = rec->count(); 38 fArray = SkNEW_ARRAY(SkRefCnt*, fCount); 39 rec->copyToArray(fArray); 40 for (int i = 0; i < fCount; i++) { 41 fArray[i]->ref(); 42 } 43 } else { 44 fCount = 0; 45 fArray = NULL; 46 } 47 } 48 49 void SkTypefacePlayback::setCount(int count) { 50 this->reset(NULL); 51 52 fCount = count; 53 fArray = SkNEW_ARRAY(SkRefCnt*, count); 54 sk_bzero(fArray, count * sizeof(SkRefCnt*)); 55 } 56 57 SkRefCnt* SkTypefacePlayback::set(int index, SkRefCnt* obj) { 58 SkASSERT((unsigned)index < (unsigned)fCount); 59 SkRefCnt_SafeAssign(fArray[index], obj); 60 return obj; 61 } 62 63 /////////////////////////////////////////////////////////////////////////////// 64 65 SkFlatController::SkFlatController() 66 : fBitmapHeap(NULL) 67 , fTypefaceSet(NULL) 68 , fTypefacePlayback(NULL) 69 , fFactorySet(NULL) 70 , fWriteBufferFlags(0) {} 71 72 SkFlatController::~SkFlatController() { 73 SkSafeUnref(fBitmapHeap); 74 SkSafeUnref(fTypefaceSet); 75 SkSafeUnref(fFactorySet); 76 } 77 78 void SkFlatController::setBitmapHeap(SkBitmapHeap* heap) { 79 SkRefCnt_SafeAssign(fBitmapHeap, heap); 80 } 81 82 void SkFlatController::setTypefaceSet(SkRefCntSet *set) { 83 SkRefCnt_SafeAssign(fTypefaceSet, set); 84 } 85 86 void SkFlatController::setTypefacePlayback(SkTypefacePlayback* playback) { 87 fTypefacePlayback = playback; 88 } 89 90 SkNamedFactorySet* SkFlatController::setNamedFactorySet(SkNamedFactorySet* set) { 91 SkRefCnt_SafeAssign(fFactorySet, set); 92 return set; 93 } 94 95 /////////////////////////////////////////////////////////////////////////////// 96 97 void SkFlatData::stampHeaderAndSentinel(int index, int32_t size) { 98 fIndex = index; 99 fFlatSize = size; 100 fChecksum = SkChecksum::Compute(this->data32(), size); 101 this->setTopBotUnwritten(); 102 this->setSentinelAsCandidate(); 103 } 104 105 SkFlatData* SkFlatData::Create(SkFlatController* controller, const void* obj, 106 int index, void (*flattenProc)(SkOrderedWriteBuffer&, const void*)) { 107 // a buffer of 256 bytes should be sufficient for most paints, regions, 108 // and matrices. 109 intptr_t storage[256]; 110 SkOrderedWriteBuffer buffer(256, storage, sizeof(storage)); 111 112 buffer.setBitmapHeap(controller->getBitmapHeap()); 113 buffer.setTypefaceRecorder(controller->getTypefaceSet()); 114 buffer.setNamedFactoryRecorder(controller->getNamedFactorySet()); 115 buffer.setFlags(controller->getWriteBufferFlags()); 116 117 flattenProc(buffer, obj); 118 uint32_t size = buffer.size(); 119 SkASSERT(SkIsAlign4(size)); 120 121 /** 122 * Allocate enough memory to hold 123 * 1. SkFlatData struct 124 * 2. flattenProc's data (4-byte aligned) 125 * 3. 4-byte sentinel 126 */ 127 size_t allocSize = sizeof(SkFlatData) + size + sizeof(uint32_t); 128 SkFlatData* result = (SkFlatData*) controller->allocThrow(allocSize); 129 130 // put the serialized contents into the data section of the new allocation 131 buffer.writeToMemory(result->data()); 132 result->stampHeaderAndSentinel(index, size); 133 return result; 134 } 135 136 void SkFlatData::unflatten(void* result, 137 void (*unflattenProc)(SkOrderedReadBuffer&, void*), 138 SkBitmapHeap* bitmapHeap, 139 SkTypefacePlayback* facePlayback) const { 140 141 SkOrderedReadBuffer buffer(this->data(), fFlatSize); 142 143 if (bitmapHeap) { 144 buffer.setBitmapStorage(bitmapHeap); 145 } 146 if (facePlayback) { 147 facePlayback->setupBuffer(buffer); 148 } 149 150 unflattenProc(buffer, result); 151 SkASSERT(fFlatSize == (int32_t)buffer.offset()); 152 } 153