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 "SkDrawable.h" 13 #include "SkPicture.h" 14 #include "SkPictureContentInfo.h" 15 #include "SkPictureFlat.h" 16 17 class SkData; 18 class SkPictureRecord; 19 class SkPixelSerializer; 20 class SkReader32; 21 class SkStream; 22 class SkWStream; 23 class SkBBoxHierarchy; 24 class SkMatrix; 25 class SkPaint; 26 class SkPath; 27 class SkReadBuffer; 28 class SkTextBlob; 29 30 struct SkPictInfo { 31 enum Flags { 32 kCrossProcess_Flag = 1 << 0, 33 kScalarIsFloat_Flag = 1 << 1, 34 kPtrIs64Bit_Flag = 1 << 2, 35 }; 36 37 SkPictInfo() : fVersion(~0U) {} 38 39 uint32_t getVersion() const { 40 SkASSERT(fVersion != ~0U); 41 return fVersion; 42 } 43 44 void setVersion(uint32_t version) { 45 SkASSERT(version != ~0U); 46 fVersion = version; 47 } 48 49 public: 50 char fMagic[8]; 51 private: 52 uint32_t fVersion; 53 public: 54 SkRect fCullRect; 55 uint32_t fFlags; 56 }; 57 58 #define SK_PICT_READER_TAG SkSetFourByteTag('r', 'e', 'a', 'd') 59 #define SK_PICT_FACTORY_TAG SkSetFourByteTag('f', 'a', 'c', 't') 60 #define SK_PICT_TYPEFACE_TAG SkSetFourByteTag('t', 'p', 'f', 'c') 61 #define SK_PICT_PICTURE_TAG SkSetFourByteTag('p', 'c', 't', 'r') 62 #define SK_PICT_DRAWABLE_TAG SkSetFourByteTag('d', 'r', 'a', 'w') 63 64 // This tag specifies the size of the ReadBuffer, needed for the following tags 65 #define SK_PICT_BUFFER_SIZE_TAG SkSetFourByteTag('a', 'r', 'a', 'y') 66 // these are all inside the ARRAYS tag 67 #define SK_PICT_BITMAP_BUFFER_TAG SkSetFourByteTag('b', 't', 'm', 'p') 68 #define SK_PICT_PAINT_BUFFER_TAG SkSetFourByteTag('p', 'n', 't', ' ') 69 #define SK_PICT_PATH_BUFFER_TAG SkSetFourByteTag('p', 't', 'h', ' ') 70 #define SK_PICT_TEXTBLOB_BUFFER_TAG SkSetFourByteTag('b', 'l', 'o', 'b') 71 #define SK_PICT_VERTICES_BUFFER_TAG SkSetFourByteTag('v', 'e', 'r', 't') 72 #define SK_PICT_IMAGE_BUFFER_TAG SkSetFourByteTag('i', 'm', 'a', 'g') 73 74 // Always write this guy last (with no length field afterwards) 75 #define SK_PICT_EOF_TAG SkSetFourByteTag('e', 'o', 'f', ' ') 76 77 class SkPictureData { 78 public: 79 SkPictureData(const SkPictureRecord& record, const SkPictInfo&); 80 // Does not affect ownership of SkStream. 81 static SkPictureData* CreateFromStream(SkStream*, 82 const SkPictInfo&, 83 SkImageDeserializer*, 84 SkTypefacePlayback*); 85 static SkPictureData* CreateFromBuffer(SkReadBuffer&, const SkPictInfo&); 86 87 virtual ~SkPictureData(); 88 89 void serialize(SkWStream*, SkPixelSerializer*, SkRefCntSet*) const; 90 void flatten(SkWriteBuffer&) const; 91 92 bool containsBitmaps() const; 93 94 bool hasText() const { return fContentInfo.hasText(); } 95 96 int opCount() const { return fContentInfo.numOperations(); } 97 98 const sk_sp<SkData>& opData() const { return fOpData; } 99 100 protected: 101 explicit SkPictureData(const SkPictInfo& info); 102 103 // Does not affect ownership of SkStream. 104 bool parseStream(SkStream*, SkImageDeserializer*, SkTypefacePlayback*); 105 bool parseBuffer(SkReadBuffer& buffer); 106 107 public: 108 const SkImage* getBitmapAsImage(SkReadBuffer* reader) const { 109 const int index = reader->readInt(); 110 return reader->validateIndex(index, fBitmapImageCount) ? fBitmapImageRefs[index] : nullptr; 111 } 112 113 const SkImage* getImage(SkReadBuffer* reader) const { 114 const int index = reader->readInt(); 115 return reader->validateIndex(index, fImageCount) ? fImageRefs[index] : nullptr; 116 } 117 118 const SkPath& getPath(SkReadBuffer* reader) const { 119 const int index = reader->readInt() - 1; 120 return reader->validateIndex(index, fPaths.count()) ? fPaths[index] : fEmptyPath; 121 } 122 123 const SkPicture* getPicture(SkReadBuffer* reader) const { 124 const int index = reader->readInt() - 1; 125 return reader->validateIndex(index, fPictureCount) ? fPictureRefs[index] : nullptr; 126 } 127 128 SkDrawable* getDrawable(SkReadBuffer* reader) const { 129 int index = reader->readInt(); 130 SkASSERT(index > 0 && index <= fDrawableCount); 131 return fDrawableRefs[index - 1]; 132 } 133 134 const SkPaint* getPaint(SkReadBuffer* reader) const { 135 const int index = reader->readInt() - 1; 136 if (index == -1) { // recorder wrote a zero for no paint (likely drawimage) 137 return nullptr; 138 } 139 return reader->validateIndex(index, fPaints.count()) ? &fPaints[index] : nullptr; 140 } 141 142 const SkTextBlob* getTextBlob(SkReadBuffer* reader) const { 143 const int index = reader->readInt() - 1; 144 return reader->validateIndex(index, fTextBlobCount) ? fTextBlobRefs[index] : nullptr; 145 } 146 147 const SkVertices* getVertices(SkReadBuffer* reader) const { 148 const int index = reader->readInt() - 1; 149 return reader->validateIndex(index, fVerticesCount) ? fVerticesRefs[index] : nullptr; 150 } 151 152 #if SK_SUPPORT_GPU 153 /** 154 * sampleCount is the number of samples-per-pixel or zero if non-MSAA. 155 * It is defaulted to be zero. 156 */ 157 bool suitableForGpuRasterization(GrContext* context, const char **reason, 158 int sampleCount = 0) const; 159 160 /** 161 * Calls getRecommendedSampleCount with GrPixelConfig and dpi to calculate sampleCount 162 * and then calls the above version of suitableForGpuRasterization 163 */ 164 bool suitableForGpuRasterization(GrContext* context, const char **reason, 165 GrPixelConfig config, SkScalar dpi) const; 166 167 bool suitableForLayerOptimization() const; 168 #endif 169 170 private: 171 void init(); 172 173 // these help us with reading/writing 174 // Does not affect ownership of SkStream. 175 bool parseStreamTag(SkStream*, uint32_t tag, uint32_t size, 176 SkImageDeserializer*, SkTypefacePlayback*); 177 bool parseBufferTag(SkReadBuffer&, uint32_t tag, uint32_t size); 178 void flattenToBuffer(SkWriteBuffer&) const; 179 180 SkTArray<SkPaint> fPaints; 181 SkTArray<SkPath> fPaths; 182 183 sk_sp<SkData> fOpData; // opcodes and parameters 184 185 const SkPath fEmptyPath; 186 const SkBitmap fEmptyBitmap; 187 188 const SkPicture** fPictureRefs; 189 int fPictureCount; 190 SkDrawable** fDrawableRefs; 191 int fDrawableCount; 192 const SkTextBlob** fTextBlobRefs; 193 int fTextBlobCount; 194 const SkVertices** fVerticesRefs; 195 int fVerticesCount; 196 const SkImage** fImageRefs; 197 int fImageCount; 198 const SkImage** fBitmapImageRefs; 199 int fBitmapImageCount; 200 201 SkPictureContentInfo fContentInfo; 202 203 SkTypefacePlayback fTFPlayback; 204 SkFactoryPlayback* fFactoryPlayback; 205 206 const SkPictInfo fInfo; 207 208 static void WriteFactories(SkWStream* stream, const SkFactorySet& rec); 209 static void WriteTypefaces(SkWStream* stream, const SkRefCntSet& rec); 210 211 void initForPlayback() const; 212 }; 213 214 #endif 215
