mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-23 21:01:08 +00:00
94 lines
3.0 KiB
C++
94 lines
3.0 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* 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/. */
|
|
|
|
/**
|
|
* An ISurfaceProvider implemented for single-frame decoded surfaces.
|
|
*/
|
|
|
|
#ifndef mozilla_image_DecodedSurfaceProvider_h
|
|
#define mozilla_image_DecodedSurfaceProvider_h
|
|
|
|
#include "IDecodingTask.h"
|
|
#include "ISurfaceProvider.h"
|
|
#include "SurfaceCache.h"
|
|
|
|
namespace mozilla {
|
|
namespace image {
|
|
|
|
/**
|
|
* An ISurfaceProvider that manages the decoding of a single-frame image and
|
|
* stores the resulting surface.
|
|
*/
|
|
class DecodedSurfaceProvider final : public ISurfaceProvider,
|
|
public IDecodingTask {
|
|
public:
|
|
NS_INLINE_DECL_THREADSAFE_REFCOUNTING(DecodedSurfaceProvider, override)
|
|
|
|
DecodedSurfaceProvider(NotNull<RasterImage*> aImage,
|
|
const SurfaceKey& aSurfaceKey,
|
|
NotNull<Decoder*> aDecoder);
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
// ISurfaceProvider implementation.
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
|
|
public:
|
|
bool IsFinished() const override;
|
|
size_t LogicalSizeInBytes() const override;
|
|
|
|
protected:
|
|
DrawableFrameRef DrawableRef(size_t aFrame) override;
|
|
bool IsLocked() const override { return bool(mLockRef); }
|
|
void SetLocked(bool aLocked) override;
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
// IDecodingTask implementation.
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
|
|
public:
|
|
void Run() override;
|
|
bool ShouldPreferSyncRun() const override;
|
|
|
|
// Full decodes are low priority compared to metadata decodes because they
|
|
// don't block layout or page load.
|
|
TaskPriority Priority() const override { return TaskPriority::eLow; }
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
// WebRenderImageProvider implementation.
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
|
|
public:
|
|
nsresult UpdateKey(layers::RenderRootStateManager* aManager,
|
|
wr::IpcResourceUpdateQueue& aResources,
|
|
wr::ImageKey& aKey) override;
|
|
|
|
private:
|
|
virtual ~DecodedSurfaceProvider();
|
|
|
|
void DropImageReference();
|
|
void CheckForNewSurface();
|
|
void FinishDecoding();
|
|
|
|
/// The image associated with our decoder. Dropped after decoding.
|
|
RefPtr<RasterImage> mImage;
|
|
|
|
/// Mutex protecting access to mDecoder.
|
|
Mutex mMutex MOZ_UNANNOTATED;
|
|
|
|
/// The decoder that will generate our surface. Dropped after decoding.
|
|
RefPtr<Decoder> mDecoder;
|
|
|
|
/// Our surface. Initially null until it's generated by the decoder.
|
|
RefPtr<imgFrame> mSurface;
|
|
|
|
/// A drawable reference to our service; used for locking.
|
|
DrawableFrameRef mLockRef;
|
|
};
|
|
|
|
} // namespace image
|
|
} // namespace mozilla
|
|
|
|
#endif // mozilla_image_DecodedSurfaceProvider_h
|