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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 SkWriteBuffer_DEFINED
#define SkWriteBuffer_DEFINED
#include "SkBitmapHeap.h"
#include "SkData.h"
#include "SkPath.h"
#include "SkPicture.h"
#include "SkRefCnt.h"
#include "SkWriter32.h"
class SkBitmap;
class SkFactorySet;
class SkFlattenable;
class SkNamedFactorySet;
class SkRefCntSet;
class SkWriteBuffer {
public:
enum Flags {
kCrossProcess_Flag = 1 << 0,
kValidation_Flag = 1 << 1,
};
SkWriteBuffer(uint32_t flags = 0);
SkWriteBuffer(void* initialStorage, size_t storageSize, uint32_t flags = 0);
~SkWriteBuffer();
bool isCrossProcess() const {
return this->isValidating() || SkToBool(fFlags & kCrossProcess_Flag);
}
SkWriter32* getWriter32() { return &fWriter; }
void reset(void* storage = NULL, size_t storageSize = 0) {
fWriter.reset(storage, storageSize);
}
uint32_t* reserve(size_t size) { return fWriter.reserve(size); }
size_t bytesWritten() const { return fWriter.bytesWritten(); }
void writeByteArray(const void* data, size_t size);
void writeDataAsByteArray(SkData* data) { this->writeByteArray(data->data(), data->size()); }
void writeBool(bool value);
void writeFixed(SkFixed value);
void writeScalar(SkScalar value);
void writeScalarArray(const SkScalar* value, uint32_t count);
void writeInt(int32_t value);
void writeIntArray(const int32_t* value, uint32_t count);
void writeUInt(uint32_t value);
void write32(int32_t value);
void writeString(const char* value);
void writeEncodedString(const void* value, size_t byteLength, SkPaint::TextEncoding encoding);
void writeFunctionPtr(void* ptr) { fWriter.writePtr(ptr); }
void writeFlattenable(const SkFlattenable* flattenable);
void writeColor(const SkColor& color);
void writeColorArray(const SkColor* color, uint32_t count);
void writePoint(const SkPoint& point);
void writePointArray(const SkPoint* point, uint32_t count);
void writeMatrix(const SkMatrix& matrix);
void writeIRect(const SkIRect& rect);
void writeRect(const SkRect& rect);
void writeRegion(const SkRegion& region);
void writePath(const SkPath& path);
size_t writeStream(SkStream* stream, size_t length);
void writeBitmap(const SkBitmap& bitmap);
void writeTypeface(SkTypeface* typeface);
void writePaint(const SkPaint& paint) { paint.flatten(*this); }
bool writeToStream(SkWStream*);
void writeToMemory(void* dst) { fWriter.flatten(dst); }
SkFactorySet* setFactoryRecorder(SkFactorySet*);
SkNamedFactorySet* setNamedFactoryRecorder(SkNamedFactorySet*);
SkRefCntSet* getTypefaceRecorder() const { return fTFSet; }
SkRefCntSet* setTypefaceRecorder(SkRefCntSet*);
/**
* Set an SkBitmapHeap to store bitmaps rather than flattening.
*
* Incompatible with an EncodeBitmap function. If an EncodeBitmap function is set, setting an
* SkBitmapHeap will set the function to NULL in release mode and crash in debug.
*/
void setBitmapHeap(SkBitmapHeap*);
/**
* Provide a function to encode an SkBitmap to an SkData. writeBitmap will attempt to use
* bitmapEncoder to store the SkBitmap. If the reader does not provide a function to decode, it
* will not be able to restore SkBitmaps, but will still be able to read the rest of the stream.
* bitmapEncoder will never be called with a NULL pixelRefOffset.
*
* Incompatible with the SkBitmapHeap. If an encoder is set fBitmapHeap will be set to NULL in
* release and crash in debug.
*/
void setBitmapEncoder(SkPicture::EncodeBitmap bitmapEncoder);
private:
bool isValidating() const { return SkToBool(fFlags & kValidation_Flag); }
const uint32_t fFlags;
SkFactorySet* fFactorySet;
SkNamedFactorySet* fNamedFactorySet;
SkWriter32 fWriter;
SkBitmapHeap* fBitmapHeap;
SkRefCntSet* fTFSet;
SkPicture::EncodeBitmap fBitmapEncoder;
};
#endif // SkWriteBuffer_DEFINED
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