1/* 2 * Copyright 2011 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#ifndef SkPictureData_DEFINED 9#define SkPictureData_DEFINED 10 11#include "SkBitmap.h" 12#include "SkPicture.h" 13#include "SkPictureContentInfo.h" 14#include "SkPictureFlat.h" 15 16class SkData; 17class SkPictureRecord; 18class SkPixelSerializer; 19class SkReader32; 20class SkStream; 21class SkWStream; 22class SkBBoxHierarchy; 23class SkMatrix; 24class SkPaint; 25class SkPath; 26class SkReadBuffer; 27class SkTextBlob; 28 29struct SkPictInfo { 30 enum Flags { 31 kCrossProcess_Flag = 1 << 0, 32 kScalarIsFloat_Flag = 1 << 1, 33 kPtrIs64Bit_Flag = 1 << 2, 34 }; 35 36 char fMagic[8]; 37 uint32_t fVersion; 38 SkRect fCullRect; 39 uint32_t fFlags; 40}; 41 42#define SK_PICT_READER_TAG SkSetFourByteTag('r', 'e', 'a', 'd') 43#define SK_PICT_FACTORY_TAG SkSetFourByteTag('f', 'a', 'c', 't') 44#define SK_PICT_TYPEFACE_TAG SkSetFourByteTag('t', 'p', 'f', 'c') 45#define SK_PICT_PICTURE_TAG SkSetFourByteTag('p', 'c', 't', 'r') 46 47// This tag specifies the size of the ReadBuffer, needed for the following tags 48#define SK_PICT_BUFFER_SIZE_TAG SkSetFourByteTag('a', 'r', 'a', 'y') 49// these are all inside the ARRAYS tag 50#define SK_PICT_BITMAP_BUFFER_TAG SkSetFourByteTag('b', 't', 'm', 'p') 51#define SK_PICT_PAINT_BUFFER_TAG SkSetFourByteTag('p', 'n', 't', ' ') 52#define SK_PICT_PATH_BUFFER_TAG SkSetFourByteTag('p', 't', 'h', ' ') 53#define SK_PICT_TEXTBLOB_BUFFER_TAG SkSetFourByteTag('b', 'l', 'o', 'b') 54 55// Always write this guy last (with no length field afterwards) 56#define SK_PICT_EOF_TAG SkSetFourByteTag('e', 'o', 'f', ' ') 57 58class SkPictureData { 59public: 60 SkPictureData(const SkPictureRecord& record, const SkPictInfo&, bool deepCopyOps); 61 // Does not affect ownership of SkStream. 62 static SkPictureData* CreateFromStream(SkStream*, 63 const SkPictInfo&, 64 SkPicture::InstallPixelRefProc); 65 static SkPictureData* CreateFromBuffer(SkReadBuffer&, const SkPictInfo&); 66 67 virtual ~SkPictureData(); 68 69 void serialize(SkWStream*, SkPixelSerializer*) const; 70 void flatten(SkWriteBuffer&) const; 71 72 bool containsBitmaps() const; 73 74 bool hasText() const { return fContentInfo.hasText(); } 75 76 int opCount() const { return fContentInfo.numOperations(); } 77 78 const SkData* opData() const { return fOpData; } 79 80protected: 81 explicit SkPictureData(const SkPictInfo& info); 82 83 // Does not affect ownership of SkStream. 84 bool parseStream(SkStream*, SkPicture::InstallPixelRefProc); 85 bool parseBuffer(SkReadBuffer& buffer); 86 87public: 88 const SkBitmap& getBitmap(SkReader32* reader) const { 89 const int index = reader->readInt(); 90 return fBitmaps[index]; 91 } 92 93 const SkPath& getPath(SkReader32* reader) const { 94 int index = reader->readInt() - 1; 95 return fPaths[index]; 96 } 97 98 const SkPicture* getPicture(SkReader32* reader) const { 99 int index = reader->readInt(); 100 SkASSERT(index > 0 && index <= fPictureCount); 101 return fPictureRefs[index - 1]; 102 } 103 104 const SkPaint* getPaint(SkReader32* reader) const { 105 int index = reader->readInt(); 106 if (index == 0) { 107 return NULL; 108 } 109 return &fPaints[index - 1]; 110 } 111 112 const SkTextBlob* getTextBlob(SkReader32* reader) const { 113 int index = reader->readInt(); 114 SkASSERT(index > 0 && index <= fTextBlobCount); 115 return fTextBlobRefs[index - 1]; 116 } 117 118#if SK_SUPPORT_GPU 119 /** 120 * sampleCount is the number of samples-per-pixel or zero if non-MSAA. 121 * It is defaulted to be zero. 122 */ 123 bool suitableForGpuRasterization(GrContext* context, const char **reason, 124 int sampleCount = 0) const; 125 126 /** 127 * Calls getRecommendedSampleCount with GrPixelConfig and dpi to calculate sampleCount 128 * and then calls the above version of suitableForGpuRasterization 129 */ 130 bool suitableForGpuRasterization(GrContext* context, const char **reason, 131 GrPixelConfig config, SkScalar dpi) const; 132 133 bool suitableForLayerOptimization() const; 134#endif 135 136private: 137 void init(); 138 139 // these help us with reading/writing 140 // Does not affect ownership of SkStream. 141 bool parseStreamTag(SkStream*, uint32_t tag, uint32_t size, SkPicture::InstallPixelRefProc); 142 bool parseBufferTag(SkReadBuffer&, uint32_t tag, uint32_t size); 143 void flattenToBuffer(SkWriteBuffer&) const; 144 145 // Only used by getBitmap() if the passed in index is SkBitmapHeap::INVALID_SLOT. This empty 146 // bitmap allows playback to draw nothing and move on. 147 SkBitmap fBadBitmap; 148 149 SkTArray<SkBitmap> fBitmaps; 150 SkTArray<SkPaint> fPaints; 151 SkTArray<SkPath> fPaths; 152 153 SkData* fOpData; // opcodes and parameters 154 155 const SkPicture** fPictureRefs; 156 int fPictureCount; 157 const SkTextBlob** fTextBlobRefs; 158 int fTextBlobCount; 159 160 SkPictureContentInfo fContentInfo; 161 162 SkTypefacePlayback fTFPlayback; 163 SkFactoryPlayback* fFactoryPlayback; 164 165 const SkPictInfo fInfo; 166 167 static void WriteFactories(SkWStream* stream, const SkFactorySet& rec); 168 static void WriteTypefaces(SkWStream* stream, const SkRefCntSet& rec); 169 170 void initForPlayback() const; 171}; 172 173#endif 174