| |
| /* |
| * Copyright 2011 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef SkPicturePlayback_DEFINED |
| #define SkPicturePlayback_DEFINED |
| |
| #include "SkBitmap.h" |
| #include "SkPathHeap.h" |
| #include "SkPicture.h" |
| #include "SkPictureFlat.h" |
| |
| #ifdef SK_BUILD_FOR_ANDROID |
| #include "SkThread.h" |
| #endif |
| |
| class SkData; |
| class SkPictureRecord; |
| class SkReader32; |
| class SkStream; |
| class SkWStream; |
| class SkBBoxHierarchy; |
| class SkMatrix; |
| class SkPaint; |
| class SkPath; |
| class SkPictureStateTree; |
| class SkReadBuffer; |
| class SkRegion; |
| |
| struct SkPictInfo { |
| enum Flags { |
| kCrossProcess_Flag = 1 << 0, |
| kScalarIsFloat_Flag = 1 << 1, |
| kPtrIs64Bit_Flag = 1 << 2, |
| }; |
| |
| char fMagic[8]; |
| uint32_t fVersion; |
| uint32_t fWidth; |
| uint32_t fHeight; |
| uint32_t fFlags; |
| }; |
| |
| #define SK_PICT_READER_TAG SkSetFourByteTag('r', 'e', 'a', 'd') |
| #define SK_PICT_FACTORY_TAG SkSetFourByteTag('f', 'a', 'c', 't') |
| #define SK_PICT_TYPEFACE_TAG SkSetFourByteTag('t', 'p', 'f', 'c') |
| #define SK_PICT_PICTURE_TAG SkSetFourByteTag('p', 'c', 't', 'r') |
| |
| // This tag specifies the size of the ReadBuffer, needed for the following tags |
| #define SK_PICT_BUFFER_SIZE_TAG SkSetFourByteTag('a', 'r', 'a', 'y') |
| // these are all inside the ARRAYS tag |
| #define SK_PICT_BITMAP_BUFFER_TAG SkSetFourByteTag('b', 't', 'm', 'p') |
| #define SK_PICT_PAINT_BUFFER_TAG SkSetFourByteTag('p', 'n', 't', ' ') |
| #define SK_PICT_PATH_BUFFER_TAG SkSetFourByteTag('p', 't', 'h', ' ') |
| |
| // Always write this guy last (with no length field afterwards) |
| #define SK_PICT_EOF_TAG SkSetFourByteTag('e', 'o', 'f', ' ') |
| |
| // SkPictureContentInfo is not serialized! It is intended solely for use |
| // with suitableForGpuRasterization. |
| class SkPictureContentInfo { |
| public: |
| SkPictureContentInfo() { this->reset(); } |
| |
| SkPictureContentInfo(const SkPictureContentInfo& src) { this->set(src); } |
| |
| void set(const SkPictureContentInfo& src) { |
| fNumPaintWithPathEffectUses = src.fNumPaintWithPathEffectUses; |
| fNumFastPathDashEffects = src.fNumFastPathDashEffects; |
| fNumAAConcavePaths = src.fNumAAConcavePaths; |
| fNumAAHairlineConcavePaths = src.fNumAAHairlineConcavePaths; |
| } |
| |
| void reset() { |
| fNumPaintWithPathEffectUses = 0; |
| fNumFastPathDashEffects = 0; |
| fNumAAConcavePaths = 0; |
| fNumAAHairlineConcavePaths = 0; |
| } |
| |
| void swap(SkPictureContentInfo* other) { |
| SkTSwap(fNumPaintWithPathEffectUses, other->fNumPaintWithPathEffectUses); |
| SkTSwap(fNumFastPathDashEffects, other->fNumFastPathDashEffects); |
| SkTSwap(fNumAAConcavePaths, other->fNumAAConcavePaths); |
| SkTSwap(fNumAAHairlineConcavePaths, other->fNumAAHairlineConcavePaths); |
| } |
| |
| void incPaintWithPathEffectUses() { ++fNumPaintWithPathEffectUses; } |
| int numPaintWithPathEffectUses() const { return fNumPaintWithPathEffectUses; } |
| |
| void incFastPathDashEffects() { ++fNumFastPathDashEffects; } |
| int numFastPathDashEffects() const { return fNumFastPathDashEffects; } |
| |
| void incAAConcavePaths() { ++fNumAAConcavePaths; } |
| int numAAConcavePaths() const { return fNumAAConcavePaths; } |
| |
| void incAAHairlineConcavePaths() { |
| ++fNumAAHairlineConcavePaths; |
| SkASSERT(fNumAAHairlineConcavePaths <= fNumAAConcavePaths); |
| } |
| int numAAHairlineConcavePaths() const { return fNumAAHairlineConcavePaths; } |
| |
| private: |
| // This field is incremented every time a paint with a path effect is |
| // used (i.e., it is not a de-duplicated count) |
| int fNumPaintWithPathEffectUses; |
| // This field is incremented every time a paint with a path effect that is |
| // dashed, we are drawing a line, and we can use the gpu fast path |
| int fNumFastPathDashEffects; |
| // This field is incremented every time an anti-aliased drawPath call is |
| // issued with a concave path |
| int fNumAAConcavePaths; |
| // This field is incremented every time a drawPath call is |
| // issued for a hairline stroked concave path. |
| int fNumAAHairlineConcavePaths; |
| }; |
| |
| /** |
| * Container for data that is needed to deep copy a SkPicture. The container |
| * enables the data to be generated once and reused for subsequent copies. |
| */ |
| struct SkPictCopyInfo { |
| SkPictCopyInfo() : initialized(false), controller(1024) {} |
| |
| bool initialized; |
| SkChunkFlatController controller; |
| SkTDArray<SkFlatData*> paintData; |
| }; |
| |
| class SkPicturePlayback { |
| public: |
| SkPicturePlayback(const SkPicturePlayback& src, |
| SkPictCopyInfo* deepCopyInfo = NULL); |
| SkPicturePlayback(const SkPictureRecord& record, const SkPictInfo&, bool deepCopyOps); |
| static SkPicturePlayback* CreateFromStream(SkStream*, |
| const SkPictInfo&, |
| SkPicture::InstallPixelRefProc); |
| static SkPicturePlayback* CreateFromBuffer(SkReadBuffer&, |
| const SkPictInfo&); |
| |
| virtual ~SkPicturePlayback(); |
| |
| const SkPicture::OperationList& getActiveOps(const SkIRect& queryRect); |
| |
| void setUseBBH(bool useBBH) { fUseBBH = useBBH; } |
| |
| void draw(SkCanvas& canvas, SkDrawPictureCallback*); |
| |
| void serialize(SkWStream*, SkPicture::EncodeBitmap) const; |
| void flatten(SkWriteBuffer&) const; |
| |
| void dumpSize() const; |
| |
| bool containsBitmaps() const; |
| |
| #ifdef SK_BUILD_FOR_ANDROID |
| // Can be called in the middle of playback (the draw() call). WIll abort the |
| // drawing and return from draw() after the "current" op code is done |
| void abort() { fAbortCurrentPlayback = true; } |
| #endif |
| |
| size_t curOpID() const { return fCurOffset; } |
| void resetOpID() { fCurOffset = 0; } |
| |
| protected: |
| explicit SkPicturePlayback(const SkPictInfo& info); |
| |
| bool parseStream(SkStream*, SkPicture::InstallPixelRefProc); |
| bool parseBuffer(SkReadBuffer& buffer); |
| #ifdef SK_DEVELOPER |
| virtual bool preDraw(int opIndex, int type); |
| virtual void postDraw(int opIndex); |
| #endif |
| |
| private: |
| class TextContainer { |
| public: |
| size_t length() { return fByteLength; } |
| const void* text() { return (const void*) fText; } |
| size_t fByteLength; |
| const char* fText; |
| }; |
| |
| const SkBitmap& getBitmap(SkReader32& reader) { |
| const int index = reader.readInt(); |
| if (SkBitmapHeap::INVALID_SLOT == index) { |
| #ifdef SK_DEBUG |
| SkDebugf("An invalid bitmap was recorded!\n"); |
| #endif |
| return fBadBitmap; |
| } |
| return (*fBitmaps)[index]; |
| } |
| |
| void getMatrix(SkReader32& reader, SkMatrix* matrix) { |
| reader.readMatrix(matrix); |
| } |
| |
| const SkPath& getPath(SkReader32& reader) { |
| int index = reader.readInt() - 1; |
| return (*fPathHeap.get())[index]; |
| } |
| |
| const SkPicture* getPicture(SkReader32& reader) { |
| int index = reader.readInt(); |
| SkASSERT(index > 0 && index <= fPictureCount); |
| return fPictureRefs[index - 1]; |
| } |
| |
| const SkPaint* getPaint(SkReader32& reader) { |
| int index = reader.readInt(); |
| if (index == 0) { |
| return NULL; |
| } |
| return &(*fPaints)[index - 1]; |
| } |
| |
| const SkRect* getRectPtr(SkReader32& reader) { |
| if (reader.readBool()) { |
| return &reader.skipT<SkRect>(); |
| } else { |
| return NULL; |
| } |
| } |
| |
| const SkIRect* getIRectPtr(SkReader32& reader) { |
| if (reader.readBool()) { |
| return &reader.skipT<SkIRect>(); |
| } else { |
| return NULL; |
| } |
| } |
| |
| void getRegion(SkReader32& reader, SkRegion* region) { |
| reader.readRegion(region); |
| } |
| |
| void getText(SkReader32& reader, TextContainer* text) { |
| size_t length = text->fByteLength = reader.readInt(); |
| text->fText = (const char*)reader.skip(length); |
| } |
| |
| void init(); |
| |
| #ifdef SK_DEBUG_SIZE |
| public: |
| int size(size_t* sizePtr); |
| int bitmaps(size_t* size); |
| int paints(size_t* size); |
| int paths(size_t* size); |
| #endif |
| |
| #ifdef SK_DEBUG_DUMP |
| private: |
| void dumpBitmap(const SkBitmap& bitmap) const; |
| void dumpMatrix(const SkMatrix& matrix) const; |
| void dumpPaint(const SkPaint& paint) const; |
| void dumpPath(const SkPath& path) const; |
| void dumpPicture(const SkPicture& picture) const; |
| void dumpRegion(const SkRegion& region) const; |
| int dumpDrawType(char* bufferPtr, char* buffer, DrawType drawType); |
| int dumpInt(char* bufferPtr, char* buffer, char* name); |
| int dumpRect(char* bufferPtr, char* buffer, char* name); |
| int dumpPoint(char* bufferPtr, char* buffer, char* name); |
| void dumpPointArray(char** bufferPtrPtr, char* buffer, int count); |
| int dumpPtr(char* bufferPtr, char* buffer, char* name, void* ptr); |
| int dumpRectPtr(char* bufferPtr, char* buffer, char* name); |
| int dumpScalar(char* bufferPtr, char* buffer, char* name); |
| void dumpText(char** bufferPtrPtr, char* buffer); |
| void dumpStream(); |
| |
| public: |
| void dump() const; |
| #endif |
| |
| #if SK_SUPPORT_GPU |
| /** |
| * sampleCount is the number of samples-per-pixel or zero if non-MSAA. |
| * It is defaulted to be zero. |
| */ |
| bool suitableForGpuRasterization(GrContext* context, const char **reason, |
| int sampleCount = 0) const; |
| |
| /** |
| * Calls getRecommendedSampleCount with GrPixelConfig and dpi to calculate sampleCount |
| * and then calls the above version of suitableForGpuRasterization |
| */ |
| bool suitableForGpuRasterization(GrContext* context, const char **reason, |
| GrPixelConfig config, SkScalar dpi) const; |
| #endif |
| |
| private: // these help us with reading/writing |
| bool parseStreamTag(SkStream*, uint32_t tag, uint32_t size, SkPicture::InstallPixelRefProc); |
| bool parseBufferTag(SkReadBuffer&, uint32_t tag, uint32_t size); |
| void flattenToBuffer(SkWriteBuffer&) const; |
| |
| private: |
| friend class SkPicture; |
| friend class SkGpuDevice; // for access to setDrawLimits & setReplacements |
| |
| // Only used by getBitmap() if the passed in index is SkBitmapHeap::INVALID_SLOT. This empty |
| // bitmap allows playback to draw nothing and move on. |
| SkBitmap fBadBitmap; |
| |
| SkAutoTUnref<SkBitmapHeap> fBitmapHeap; |
| |
| SkTRefArray<SkBitmap>* fBitmaps; |
| SkTRefArray<SkPaint>* fPaints; |
| |
| SkData* fOpData; // opcodes and parameters |
| |
| SkAutoTUnref<const SkPathHeap> fPathHeap; // reference counted |
| |
| const SkPicture** fPictureRefs; |
| int fPictureCount; |
| |
| SkBBoxHierarchy* fBoundingHierarchy; |
| SkPictureStateTree* fStateTree; |
| |
| SkPictureContentInfo fContentInfo; |
| |
| // Limit the opcode playback to be between the offsets 'start' and 'stop'. |
| // The opcode at 'start' should be a saveLayer while the opcode at |
| // 'stop' should be a restore. Neither of those commands will be issued. |
| // Set both start & stop to 0 to disable draw limiting |
| // Draw limiting cannot be enabled at the same time as draw replacing |
| void setDrawLimits(size_t start, size_t stop) { |
| SkASSERT(NULL == fReplacements); |
| fStart = start; |
| fStop = stop; |
| } |
| |
| // PlaybackReplacements collects op ranges that can be replaced with |
| // a single drawBitmap call (using a precomputed bitmap). |
| class PlaybackReplacements { |
| public: |
| // All the operations between fStart and fStop (inclusive) will be replaced with |
| // a single drawBitmap call using fPos, fBM and fPaint. |
| // fPaint will be NULL if the picture's paint wasn't copyable |
| struct ReplacementInfo { |
| size_t fStart; |
| size_t fStop; |
| SkIPoint fPos; |
| SkBitmap* fBM; |
| const SkPaint* fPaint; // Note: this object doesn't own the paint |
| }; |
| |
| ~PlaybackReplacements() { this->freeAll(); } |
| |
| // Add a new replacement range. The replacement ranges should be |
| // sorted in increasing order and non-overlapping (esp. no nested |
| // saveLayers). |
| ReplacementInfo* push(); |
| |
| private: |
| friend class SkPicturePlayback; // for access to lookupByStart |
| |
| // look up a replacement range by its start offset |
| ReplacementInfo* lookupByStart(size_t start); |
| |
| void freeAll(); |
| |
| #ifdef SK_DEBUG |
| void validate() const; |
| #endif |
| |
| SkTDArray<ReplacementInfo> fReplacements; |
| }; |
| |
| // Replace all the draw ops in the replacement ranges in 'replacements' with |
| // the associated drawBitmap call |
| // Draw replacing cannot be enabled at the same time as draw limiting |
| void setReplacements(PlaybackReplacements* replacements) { |
| SkASSERT(fStart == 0 && fStop == 0); |
| fReplacements = replacements; |
| } |
| |
| bool fUseBBH; |
| size_t fStart; |
| size_t fStop; |
| PlaybackReplacements* fReplacements; |
| |
| class CachedOperationList : public SkPicture::OperationList { |
| public: |
| CachedOperationList() { |
| fCacheQueryRect.setEmpty(); |
| } |
| |
| virtual bool valid() const { return true; } |
| virtual int numOps() const SK_OVERRIDE { return fOps.count(); } |
| virtual uint32_t offset(int index) const SK_OVERRIDE; |
| virtual const SkMatrix& matrix(int index) const SK_OVERRIDE; |
| |
| // The query rect for which the cached active ops are valid |
| SkIRect fCacheQueryRect; |
| |
| // The operations which are active within 'fCachedQueryRect' |
| SkTDArray<void*> fOps; |
| |
| private: |
| typedef SkPicture::OperationList INHERITED; |
| }; |
| |
| CachedOperationList* fCachedActiveOps; |
| |
| SkTypefacePlayback fTFPlayback; |
| SkFactoryPlayback* fFactoryPlayback; |
| |
| // The offset of the current operation when within the draw method |
| size_t fCurOffset; |
| |
| const SkPictInfo fInfo; |
| |
| static void WriteFactories(SkWStream* stream, const SkFactorySet& rec); |
| static void WriteTypefaces(SkWStream* stream, const SkRefCntSet& rec); |
| |
| void initForPlayback() const; |
| |
| #ifdef SK_BUILD_FOR_ANDROID |
| SkMutex fDrawMutex; |
| bool fAbortCurrentPlayback; |
| #endif |
| }; |
| |
| #endif |
