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/*
* Copyright 2008 The Android Open Source Project
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkMallocPixelRef_DEFINED
#define SkMallocPixelRef_DEFINED
#include "SkPixelRef.h"
/** We explicitly use the same allocator for our pixels that SkMask does,
so that we can freely assign memory allocated by one class to the other.
*/
class SkMallocPixelRef : public SkPixelRef {
public:
/**
* Return a new SkMallocPixelRef with the provided pixel storage, rowBytes,
* and optional colortable. The caller is responsible for managing the
* lifetime of the pixel storage buffer, as the pixelref will not try
* to delete the storage.
*
* This pixelref will ref() the specified colortable (if not NULL).
*
* Returns NULL on failure.
*/
static SkMallocPixelRef* NewDirect(const SkImageInfo&, void* addr,
size_t rowBytes, SkColorTable*);
/**
* Return a new SkMallocPixelRef, automatically allocating storage for the
* pixels. If rowBytes are 0, an optimal value will be chosen automatically.
* If rowBytes is > 0, then it will be respected, or NULL will be returned
* if rowBytes is invalid for the specified info.
*
* This pixelref will ref() the specified colortable (if not NULL).
*
* Returns NULL on failure.
*/
static SkMallocPixelRef* NewAllocate(const SkImageInfo& info,
size_t rowBytes, SkColorTable*);
void* getAddr() const { return fStorage; }
SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkMallocPixelRef)
protected:
virtual bool onNewLockPixels(LockRec*) SK_OVERRIDE;
virtual void onUnlockPixels() SK_OVERRIDE;
virtual void flatten(SkFlattenableWriteBuffer&) const SK_OVERRIDE;
virtual size_t getAllocatedSizeInBytes() const SK_OVERRIDE;
SkMallocPixelRef(SkFlattenableReadBuffer& buffer);
SkMallocPixelRef(const SkImageInfo&, void* addr, size_t rb, SkColorTable*,
bool ownsPixels);
virtual ~SkMallocPixelRef();
private:
void* fStorage;
SkColorTable* fCTable;
size_t fRB;
const bool fOwnPixels;
typedef SkPixelRef INHERITED;
};
#endif
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