blob: 448f0ab24b907c1fe7b3ce1e49146905e30f0cd3 [file] [log] [blame]
* Copyright 2013 Google Inc.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
#ifndef SkDiscardablePixelRef_DEFINED
#define SkDiscardablePixelRef_DEFINED
#include "SkDiscardableMemory.h"
#include "SkImageGenerator.h"
#include "SkImageInfo.h"
#include "SkPixelRef.h"
* A PixelRef backed by SkDiscardableMemory, with the ability to
* re-generate the pixels (via a SkImageGenerator) if the DM is
* purged.
class SkDiscardablePixelRef : public SkPixelRef {
bool onNewLockPixels(LockRec*) SK_OVERRIDE;
void onUnlockPixels() SK_OVERRIDE;
bool onLockPixelsAreWritable() const SK_OVERRIDE { return false; }
SkData* onRefEncodedData() SK_OVERRIDE {
return fGenerator->refEncodedData();
SkImageGenerator* const fGenerator;
SkDiscardableMemory::Factory* const fDMFactory;
const size_t fRowBytes;
// These const members should not change over the life of the
// PixelRef, since the SkBitmap doesn't expect them to change.
SkDiscardableMemory* fDiscardableMemory;
SkAutoTUnref<SkColorTable> fCTable;
/* Takes ownership of SkImageGenerator. */
SkDiscardablePixelRef(const SkImageInfo&, SkImageGenerator*,
size_t rowBytes,
SkDiscardableMemory::Factory* factory);
virtual bool onGetYUV8Planes(SkISize sizes[3],
void* planes[3],
size_t rowBytes[3],
SkYUVColorSpace* colorSpace) SK_OVERRIDE {
return fGenerator->getYUV8Planes(sizes, planes, rowBytes, colorSpace);
friend bool SkInstallDiscardablePixelRef(SkImageGenerator*, SkBitmap*,
typedef SkPixelRef INHERITED;
#endif // SkDiscardablePixelRef_DEFINED