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/*
* Copyright (C) 2012 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef Canvas2DLayerBridge_h
#define Canvas2DLayerBridge_h
#include "SkDeferredCanvas.h"
#include "SkImage.h"
#include "platform/PlatformExport.h"
#include "platform/geometry/IntSize.h"
#include "platform/graphics/GraphicsContext3D.h"
#include "platform/graphics/ImageBufferSurface.h"
#include "public/platform/WebExternalTextureLayer.h"
#include "public/platform/WebExternalTextureLayerClient.h"
#include "public/platform/WebExternalTextureMailbox.h"
#include "wtf/DoublyLinkedList.h"
#include "wtf/PassOwnPtr.h"
#include "wtf/RefCounted.h"
#include "wtf/RefPtr.h"
namespace blink {
class WebGraphicsContext3D;
}
class Canvas2DLayerBridgeTest;
namespace WebCore {
class PLATFORM_EXPORT Canvas2DLayerBridge : public blink::WebExternalTextureLayerClient, public SkDeferredCanvas::NotificationClient, public DoublyLinkedListNode<Canvas2DLayerBridge>, public RefCounted<Canvas2DLayerBridge> {
WTF_MAKE_NONCOPYABLE(Canvas2DLayerBridge);
public:
static PassRefPtr<Canvas2DLayerBridge> create(const IntSize&, OpacityMode, int msaaSampleCount);
virtual ~Canvas2DLayerBridge();
// blink::WebExternalTextureLayerClient implementation.
virtual blink::WebGraphicsContext3D* context() OVERRIDE;
virtual bool prepareMailbox(blink::WebExternalTextureMailbox*, blink::WebExternalBitmap*) OVERRIDE;
virtual void mailboxReleased(const blink::WebExternalTextureMailbox&) OVERRIDE;
// SkDeferredCanvas::NotificationClient implementation
virtual void prepareForDraw() OVERRIDE;
virtual void storageAllocatedForRecordingChanged(size_t) OVERRIDE;
virtual void flushedDrawCommands() OVERRIDE;
virtual void skippedPendingDrawCommands() OVERRIDE;
// ImageBufferSurface implementation
void willUse();
SkCanvas* canvas() const { return m_canvas.get(); }
bool isValid();
blink::WebLayer* layer() const;
Platform3DObject getBackingTexture();
bool isAccelerated() const { return true; }
// Methods used by Canvas2DLayerManager
virtual size_t freeMemoryIfPossible(size_t); // virtual for mocking
virtual void flush(); // virtual for mocking
virtual size_t storageAllocatedForRecording(); // virtual for faking
size_t bytesAllocated() const {return m_bytesAllocated;}
void limitPendingFrames();
void beginDestruction();
protected:
Canvas2DLayerBridge(PassRefPtr<GraphicsContext3D>, PassOwnPtr<SkDeferredCanvas>, int, OpacityMode);
void setRateLimitingEnabled(bool);
OwnPtr<SkDeferredCanvas> m_canvas;
OwnPtr<blink::WebExternalTextureLayer> m_layer;
RefPtr<GraphicsContext3D> m_context;
int m_msaaSampleCount;
size_t m_bytesAllocated;
bool m_didRecordDrawCommand;
bool m_surfaceIsValid;
int m_framesPending;
bool m_destructionInProgress;
bool m_rateLimitingEnabled;
friend class WTF::DoublyLinkedListNode<Canvas2DLayerBridge>;
friend class ::Canvas2DLayerBridgeTest;
Canvas2DLayerBridge* m_next;
Canvas2DLayerBridge* m_prev;
enum MailboxStatus {
MailboxInUse,
MailboxReleased,
MailboxAvailable,
};
struct MailboxInfo {
blink::WebExternalTextureMailbox m_mailbox;
SkAutoTUnref<SkImage> m_image;
MailboxStatus m_status;
RefPtr<Canvas2DLayerBridge> m_parentLayerBridge;
MailboxInfo(const MailboxInfo&);
MailboxInfo() {}
};
MailboxInfo* createMailboxInfo();
uint32_t m_lastImageId;
Vector<MailboxInfo> m_mailboxes;
};
}
#endif
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