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 16 class SkData; 17 class SkPictureRecord; 18 class SkPixelSerializer; 19 class SkReader32; 20 class SkStream; 21 class SkWStream; 22 class SkBBoxHierarchy; 23 class SkMatrix; 24 class SkPaint; 25 class SkPath; 26 class SkReadBuffer; 27 class SkTextBlob; 28 29 struct 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 #define SK_PICT_IMAGE_BUFFER_TAG SkSetFourByteTag('i', 'm', 'a', 'g') 55 56 // Always write this guy last (with no length field afterwards) 57 #define SK_PICT_EOF_TAG SkSetFourByteTag('e', 'o', 'f', ' ') 58 59 class SkPictureData { 60 public: 61 SkPictureData(const SkPictureRecord& record, const SkPictInfo&, bool deepCopyOps); 62 // Does not affect ownership of SkStream. 63 static SkPictureData* CreateFromStream(SkStream*, 64 const SkPictInfo&, 65 SkPicture::InstallPixelRefProc, 66 SkTypefacePlayback*); 67 static SkPictureData* CreateFromBuffer(SkReadBuffer&, const SkPictInfo&); 68 69 virtual ~SkPictureData(); 70 71 void serialize(SkWStream*, SkPixelSerializer*, SkRefCntSet*) const; 72 void flatten(SkWriteBuffer&) const; 73 74 bool containsBitmaps() const; 75 hasText()76 bool hasText() const { return fContentInfo.hasText(); } 77 opCount()78 int opCount() const { return fContentInfo.numOperations(); } 79 opData()80 const SkData* opData() const { return fOpData; } 81 82 protected: 83 explicit SkPictureData(const SkPictInfo& info); 84 85 // Does not affect ownership of SkStream. 86 bool parseStream(SkStream*, SkPicture::InstallPixelRefProc, SkTypefacePlayback*); 87 bool parseBuffer(SkReadBuffer& buffer); 88 89 public: getBitmap(SkReader32 * reader)90 const SkBitmap& getBitmap(SkReader32* reader) const { 91 const int index = reader->readInt(); 92 return fBitmaps[index]; 93 } 94 getImage(SkReader32 * reader)95 const SkImage* getImage(SkReader32* reader) const { 96 const int index = reader->readInt(); 97 return fImageRefs[index]; 98 } 99 getPath(SkReader32 * reader)100 const SkPath& getPath(SkReader32* reader) const { 101 int index = reader->readInt() - 1; 102 return fPaths[index]; 103 } 104 getPicture(SkReader32 * reader)105 const SkPicture* getPicture(SkReader32* reader) const { 106 int index = reader->readInt(); 107 SkASSERT(index > 0 && index <= fPictureCount); 108 return fPictureRefs[index - 1]; 109 } 110 getPaint(SkReader32 * reader)111 const SkPaint* getPaint(SkReader32* reader) const { 112 int index = reader->readInt(); 113 if (index == 0) { 114 return nullptr; 115 } 116 return &fPaints[index - 1]; 117 } 118 getTextBlob(SkReader32 * reader)119 const SkTextBlob* getTextBlob(SkReader32* reader) const { 120 int index = reader->readInt(); 121 SkASSERT(index > 0 && index <= fTextBlobCount); 122 return fTextBlobRefs[index - 1]; 123 } 124 125 #if SK_SUPPORT_GPU 126 /** 127 * sampleCount is the number of samples-per-pixel or zero if non-MSAA. 128 * It is defaulted to be zero. 129 */ 130 bool suitableForGpuRasterization(GrContext* context, const char **reason, 131 int sampleCount = 0) const; 132 133 /** 134 * Calls getRecommendedSampleCount with GrPixelConfig and dpi to calculate sampleCount 135 * and then calls the above version of suitableForGpuRasterization 136 */ 137 bool suitableForGpuRasterization(GrContext* context, const char **reason, 138 GrPixelConfig config, SkScalar dpi) const; 139 140 bool suitableForLayerOptimization() const; 141 #endif 142 143 private: 144 void init(); 145 146 // these help us with reading/writing 147 // Does not affect ownership of SkStream. 148 bool parseStreamTag(SkStream*, uint32_t tag, uint32_t size, 149 SkPicture::InstallPixelRefProc, SkTypefacePlayback*); 150 bool parseBufferTag(SkReadBuffer&, uint32_t tag, uint32_t size); 151 void flattenToBuffer(SkWriteBuffer&) const; 152 153 // Only used by getBitmap() if the passed in index is SkBitmapHeap::INVALID_SLOT. This empty 154 // bitmap allows playback to draw nothing and move on. 155 SkBitmap fBadBitmap; 156 157 SkTArray<SkBitmap> fBitmaps; 158 SkTArray<SkPaint> fPaints; 159 SkTArray<SkPath> fPaths; 160 161 SkData* fOpData; // opcodes and parameters 162 163 const SkPicture** fPictureRefs; 164 int fPictureCount; 165 const SkTextBlob** fTextBlobRefs; 166 int fTextBlobCount; 167 const SkImage** fImageRefs; 168 int fImageCount; 169 170 SkPictureContentInfo fContentInfo; 171 172 SkTypefacePlayback fTFPlayback; 173 SkFactoryPlayback* fFactoryPlayback; 174 175 const SkPictInfo fInfo; 176 177 static void WriteFactories(SkWStream* stream, const SkFactorySet& rec); 178 static void WriteTypefaces(SkWStream* stream, const SkRefCntSet& rec); 179 180 void initForPlayback() const; 181 }; 182 183 #endif 184