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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 "SkDrawable.h"
#include "SkPicture.h"
#include "SkPictureContentInfo.h"
#include "SkPictureFlat.h"
class SkData;
class SkPictureRecord;
class SkPixelSerializer;
class SkReader32;
class SkStream;
class SkWStream;
class SkBBoxHierarchy;
class SkMatrix;
class SkPaint;
class SkPath;
class SkReadBuffer;
class SkTextBlob;
struct SkPictInfo {
enum Flags {
kCrossProcess_Flag = 1 << 0,
kScalarIsFloat_Flag = 1 << 1,
kPtrIs64Bit_Flag = 1 << 2,
};
char fMagic[8];
uint32_t fVersion;
SkRect fCullRect;
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')
#define SK_PICT_DRAWABLE_TAG SkSetFourByteTag('d', 'r', 'a', 'w')
// 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', ' ')
#define SK_PICT_TEXTBLOB_BUFFER_TAG SkSetFourByteTag('b', 'l', 'o', 'b')
#define SK_PICT_IMAGE_BUFFER_TAG SkSetFourByteTag('i', 'm', 'a', 'g')
// Always write this guy last (with no length field afterwards)
#define SK_PICT_EOF_TAG SkSetFourByteTag('e', 'o', 'f', ' ')
class SkPictureData {
public:
SkPictureData(const SkPictureRecord& record, const SkPictInfo&);
// Does not affect ownership of SkStream.
static SkPictureData* CreateFromStream(SkStream*,
const SkPictInfo&,
SkImageDeserializer*,
SkTypefacePlayback*);
static SkPictureData* CreateFromBuffer(SkReadBuffer&, const SkPictInfo&);
virtual ~SkPictureData();
void serialize(SkWStream*, SkPixelSerializer*, SkRefCntSet*) const;
void flatten(SkWriteBuffer&) const;
bool containsBitmaps() const;
bool hasText() const { return fContentInfo.hasText(); }
int opCount() const { return fContentInfo.numOperations(); }
const sk_sp<SkData>& opData() const { return fOpData; }
protected:
explicit SkPictureData(const SkPictInfo& info);
// Does not affect ownership of SkStream.
bool parseStream(SkStream*, SkImageDeserializer*, SkTypefacePlayback*);
bool parseBuffer(SkReadBuffer& buffer);
public:
const SkImage* getBitmapAsImage(SkReadBuffer* reader) const {
const int index = reader->readInt();
return reader->validateIndex(index, fBitmapImageCount) ? fBitmapImageRefs[index] : nullptr;
}
const SkImage* getImage(SkReadBuffer* reader) const {
const int index = reader->readInt();
return reader->validateIndex(index, fImageCount) ? fImageRefs[index] : nullptr;
}
const SkPath& getPath(SkReadBuffer* reader) const {
const int index = reader->readInt() - 1;
return reader->validateIndex(index, fPaths.count()) ? fPaths[index] : fEmptyPath;
}
const SkPicture* getPicture(SkReadBuffer* reader) const {
const int index = reader->readInt() - 1;
return reader->validateIndex(index, fPictureCount) ? fPictureRefs[index] : nullptr;
}
SkDrawable* getDrawable(SkReadBuffer* reader) const {
int index = reader->readInt();
SkASSERT(index > 0 && index <= fDrawableCount);
return fDrawableRefs[index - 1];
}
const SkPaint* getPaint(SkReadBuffer* reader) const {
const int index = reader->readInt() - 1;
return reader->validateIndex(index, fPaints.count()) ? &fPaints[index] : nullptr;
}
const SkTextBlob* getTextBlob(SkReadBuffer* reader) const {
const int index = reader->readInt() - 1;
return reader->validateIndex(index, fTextBlobCount) ? fTextBlobRefs[index] : nullptr;
}
#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:
void init();
// these help us with reading/writing
// Does not affect ownership of SkStream.
bool parseStreamTag(SkStream*, uint32_t tag, uint32_t size,
SkImageDeserializer*, SkTypefacePlayback*);
bool parseBufferTag(SkReadBuffer&, uint32_t tag, uint32_t size);
void flattenToBuffer(SkWriteBuffer&) const;
SkTArray<SkPaint> fPaints;
SkTArray<SkPath> fPaths;
sk_sp<SkData> fOpData; // opcodes and parameters
const SkPath fEmptyPath;
const SkBitmap fEmptyBitmap;
const SkPicture** fPictureRefs;
int fPictureCount;
SkDrawable** fDrawableRefs;
int fDrawableCount;
const SkTextBlob** fTextBlobRefs;
int fTextBlobCount;
const SkImage** fImageRefs;
int fImageCount;
const SkImage** fBitmapImageRefs;
int fBitmapImageCount;
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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