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/*
* 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 SkPictureData_DEFINED
#define SkPictureData_DEFINED
#include "SkBitmap.h"
#include "SkPathHeap.h"
#include "SkPicture.h"
#include "SkPictureContentInfo.h"
#include "SkPictureFlat.h"
#include "SkPictureStateTree.h"
class SkData;
class SkPictureRecord;
class SkReader32;
class SkStream;
class SkWStream;
class SkBBoxHierarchy;
class SkMatrix;
class SkPaint;
class SkPath;
class SkPictureStateTree;
class SkReadBuffer;
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', ' ')
#ifdef SK_SUPPORT_LEGACY_PICTURE_CLONE
/**
* 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() : controller(1024) {}
SkChunkFlatController controller;
SkTDArray<SkFlatData*> paintData;
};
#endif
class SkPictureData {
public:
#ifdef SK_SUPPORT_LEGACY_PICTURE_CLONE
SkPictureData(const SkPictureData& src, SkPictCopyInfo* deepCopyInfo = NULL);
#endif
SkPictureData(const SkPictureRecord& record, const SkPictInfo&, bool deepCopyOps);
static SkPictureData* CreateFromStream(SkStream*,
const SkPictInfo&,
SkPicture::InstallPixelRefProc);
static SkPictureData* CreateFromBuffer(SkReadBuffer&, const SkPictInfo&);
virtual ~SkPictureData();
const SkPicture::OperationList* getActiveOps(const SkIRect& queryRect) const;
void serialize(SkWStream*, SkPicture::EncodeBitmap) const;
void flatten(SkWriteBuffer&) const;
bool containsBitmaps() const;
const SkData* opData() const { return fOpData; }
protected:
explicit SkPictureData(const SkPictInfo& info);
bool parseStream(SkStream*, SkPicture::InstallPixelRefProc);
bool parseBuffer(SkReadBuffer& buffer);
public:
const SkBitmap& getBitmap(SkReader32* reader) const {
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];
}
const SkPath& getPath(SkReader32* reader) const {
int index = reader->readInt() - 1;
return (*fPathHeap.get())[index];
}
const SkPicture* getPicture(SkReader32* reader) const {
int index = reader->readInt();
SkASSERT(index > 0 && index <= fPictureCount);
return fPictureRefs[index - 1];
}
const SkPaint* getPaint(SkReader32* reader) const {
int index = reader->readInt();
if (index == 0) {
return NULL;
}
return &(*fPaints)[index - 1];
}
void initIterator(SkPictureStateTree::Iterator* iter,
const SkTDArray<void*>& draws,
SkCanvas* canvas) const {
if (NULL != fStateTree) {
fStateTree->initIterator(iter, draws, canvas);
}
}
#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;
bool suitableForLayerOptimization() const;
#endif
private:
friend class SkPicture; // needed in SkPicture::clone (rm when it is removed)
void init();
// 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;
// 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;
SkTypefacePlayback fTFPlayback;
SkFactoryPlayback* fFactoryPlayback;
const SkPictInfo fInfo;
static void WriteFactories(SkWStream* stream, const SkFactorySet& rec);
static void WriteTypefaces(SkWStream* stream, const SkRefCntSet& rec);
void initForPlayback() const;
};
#endif
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