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/*
* Copyright (C) 2011 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 INC. 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 INC. 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 CCSingleThreadProxy_h
#define CCSingleThreadProxy_h
#include "cc/CCCompletionEvent.h"
#include "cc/CCLayerTreeHostImpl.h"
#include "cc/CCProxy.h"
#include <wtf/OwnPtr.h>
namespace WebCore {
class CCLayerTreeHost;
class CCSingleThreadProxy : public CCProxy, CCLayerTreeHostImplClient {
public:
static PassOwnPtr<CCProxy> create(CCLayerTreeHost*);
virtual ~CCSingleThreadProxy();
// CCProxy implementation
virtual bool compositeAndReadback(void *pixels, const IntRect&);
virtual GraphicsContext3D* context();
virtual void finishAllRendering();
virtual bool isStarted() const;
virtual bool initializeLayerRenderer();
virtual int compositorIdentifier() const { return m_compositorIdentifier; }
virtual const LayerRendererCapabilities& layerRendererCapabilities() const;
virtual void loseCompositorContext(int numTimes);
virtual void setNeedsAnimate();
virtual void setNeedsCommit();
virtual void setNeedsRedraw();
virtual void setVisible(bool);
virtual void start();
virtual void stop();
virtual bool partialTextureUpdateCapability() const { return true; }
// CCLayerTreeHostImplClient implementation
virtual void onSwapBuffersCompleteOnImplThread() { ASSERT_NOT_REACHED(); }
virtual void setNeedsRedrawOnImplThread() { m_layerTreeHost->setNeedsCommit(); }
virtual void setNeedsCommitOnImplThread() { m_layerTreeHost->setNeedsCommit(); }
// Called by the legacy path where RenderWidget does the scheduling.
void compositeImmediately();
private:
explicit CCSingleThreadProxy(CCLayerTreeHost*);
bool recreateContextIfNeeded();
void commitIfNeeded();
void doCommit();
bool doComposite();
// Accessed on main thread only.
CCLayerTreeHost* m_layerTreeHost;
int m_compositorIdentifier;
// Used on the CCThread, but checked on main thread during initialization/shutdown.
OwnPtr<CCLayerTreeHostImpl> m_layerTreeHostImpl;
LayerRendererCapabilities m_layerRendererCapabilitiesForMainThread;
int m_numFailedRecreateAttempts;
bool m_graphicsContextLost;
int m_timesRecreateShouldFail; // Used during testing.
bool m_nextFrameIsNewlyCommittedFrame;
};
// For use in the single-threaded case. In debug builds, it pretends that the
// code is running on the thread to satisfy assertion checks.
class DebugScopedSetImplThread {
public:
DebugScopedSetImplThread()
{
#if !ASSERT_DISABLED
CCProxy::setCurrentThreadIsImplThread(true);
#endif
}
~DebugScopedSetImplThread()
{
#if !ASSERT_DISABLED
CCProxy::setCurrentThreadIsImplThread(false);
#endif
}
};
} // namespace WebCore
#endif
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