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/*
* Copyright 2015 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkBitmapProvider_DEFINED
#define SkBitmapProvider_DEFINED
#include "SkImage.h"
#include "SkBitmapCache.h"
class SkBitmapProvider {
public:
explicit SkBitmapProvider(const SkImage* img, SkColorSpace* dstColorSpace)
: fImage(img)
, fDstColorSpace(dstColorSpace) {
SkASSERT(img);
}
SkBitmapProvider(const SkBitmapProvider& other)
: fImage(other.fImage)
, fDstColorSpace(other.fDstColorSpace)
{}
int width() const;
int height() const;
uint32_t getID() const;
SkColorSpace* dstColorSpace() const { return fDstColorSpace; }
SkImageInfo info() const;
bool isVolatile() const;
SkBitmapCacheDesc makeCacheDesc(int w, int h) const;
SkBitmapCacheDesc makeCacheDesc() const;
void notifyAddedToCache() const;
// Only call this if you're sure you need the bits, since it maybe expensive
// ... cause a decode and cache, or gpu-readback
bool asBitmap(SkBitmap*) const;
private:
// Stack-allocated only.
void* operator new(size_t) = delete;
void* operator new(size_t, void*) = delete;
// SkBitmapProvider is always short-lived/stack allocated, and the source image and destination
// color space are guaranteed to outlive its scope => we can store raw ptrs to avoid ref churn.
const SkImage* fImage;
SkColorSpace* fDstColorSpace;
};
#endif
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