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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef MOZILLA_GFX_SOURCESURFACESKIA_H_
#define MOZILLA_GFX_SOURCESURFACESKIA_H_
#include "2D.h"
#include <vector>
#include "mozilla/Mutex.h"
#include "skia/include/core/SkCanvas.h"
#include "skia/include/core/SkImage.h"
namespace mozilla {
namespace gfx {
class DrawTargetSkia;
class SnapshotLock;
class SourceSurfaceSkia : public DataSourceSurface {
public:
MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(DataSourceSurfaceSkia, override)
SourceSurfaceSkia();
virtual ~SourceSurfaceSkia();
SurfaceType GetType() const override { return SurfaceType::SKIA; }
IntSize GetSize() const override;
SurfaceFormat GetFormat() const override;
// This is only ever called by the DT destructor, which can only ever happen
// from one place at a time. Therefore it doesn't need to hold the ChangeMutex
// as mSurface is never read to directly and is just there to keep the object
// alive, which itself is refcounted in a thread-safe manner.
void GiveSurface(sk_sp<SkSurface>& aSurface) {
mSurface = aSurface;
mDrawTarget = nullptr;
}
sk_sp<SkImage> GetImage(Maybe<MutexAutoLock>* aLock);
bool InitFromData(unsigned char* aData, const IntSize& aSize, int32_t aStride,
SurfaceFormat aFormat);
bool InitFromImage(const sk_sp<SkImage>& aImage,
SurfaceFormat aFormat = SurfaceFormat::UNKNOWN,
DrawTargetSkia* aOwner = nullptr);
uint8_t* GetData() override;
/**
* The caller is responsible for ensuring aMappedSurface is not null.
*/
bool Map(MapType, MappedSurface* aMappedSurface) override;
void Unmap() override;
int32_t Stride() override { return mStride; }
private:
friend class DrawTargetSkia;
void DrawTargetWillChange();
sk_sp<SkImage> mImage;
// This keeps a surface alive if needed because its DrawTarget has gone away.
sk_sp<SkSurface> mSurface;
SurfaceFormat mFormat;
IntSize mSize;
int32_t mStride;
Atomic<DrawTargetSkia*> mDrawTarget;
Mutex mChangeMutex;
bool mIsMapped;
};
} // namespace gfx
} // namespace mozilla
#endif /* MOZILLA_GFX_SOURCESURFACESKIA_H_ */