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// Copyright 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CC_SINGLE_THREAD_PROXY_H_
#define CC_SINGLE_THREAD_PROXY_H_
#include <limits>
#include "base/time.h"
#include "cc/animation_events.h"
#include "cc/layer_tree_host_impl.h"
#include "cc/proxy.h"
namespace cc {
class LayerTreeHost;
class SingleThreadProxy : public Proxy, LayerTreeHostImplClient {
public:
static scoped_ptr<Proxy> create(LayerTreeHost*);
virtual ~SingleThreadProxy();
// Proxy implementation
virtual bool compositeAndReadback(void *pixels, const gfx::Rect&) OVERRIDE;
virtual void startPageScaleAnimation(gfx::Vector2d targetOffset, bool useAnchor, float scale, base::TimeDelta duration) OVERRIDE;
virtual void finishAllRendering() OVERRIDE;
virtual bool isStarted() const OVERRIDE;
virtual bool initializeOutputSurface() OVERRIDE;
virtual void setSurfaceReady() OVERRIDE;
virtual void setVisible(bool) OVERRIDE;
virtual bool initializeRenderer() OVERRIDE;
virtual bool recreateOutputSurface() OVERRIDE;
virtual void renderingStats(RenderingStats*) OVERRIDE;
virtual const RendererCapabilities& rendererCapabilities() const OVERRIDE;
virtual void loseOutputSurface() OVERRIDE;
virtual void setNeedsAnimate() OVERRIDE;
virtual void setNeedsCommit() OVERRIDE;
virtual void setNeedsRedraw() OVERRIDE;
virtual void setDeferCommits(bool) OVERRIDE;
virtual bool commitRequested() const OVERRIDE;
virtual void didAddAnimation() OVERRIDE;
virtual void mainThreadHasStoppedFlinging() OVERRIDE { }
virtual void start() OVERRIDE;
virtual void stop() OVERRIDE;
virtual size_t maxPartialTextureUpdates() const OVERRIDE;
virtual void acquireLayerTextures() OVERRIDE { }
virtual void forceSerializeOnSwapBuffers() OVERRIDE;
virtual bool commitPendingForTesting() OVERRIDE;
// LayerTreeHostImplClient implementation
virtual void didLoseOutputSurfaceOnImplThread() OVERRIDE { }
virtual void onSwapBuffersCompleteOnImplThread() OVERRIDE;
virtual void onVSyncParametersChanged(base::TimeTicks timebase, base::TimeDelta interval) OVERRIDE { }
virtual void onCanDrawStateChanged(bool canDraw) OVERRIDE { }
virtual void setNeedsRedrawOnImplThread() OVERRIDE;
virtual void setNeedsCommitOnImplThread() OVERRIDE;
virtual void setNeedsManageTilesOnImplThread() OVERRIDE;
virtual void postAnimationEventsToMainThreadOnImplThread(scoped_ptr<AnimationEventsVector>, base::Time wallClockTime) OVERRIDE;
virtual bool reduceContentsTextureMemoryOnImplThread(size_t limitBytes, int priorityCutoff) OVERRIDE;
virtual void sendManagedMemoryStats() OVERRIDE;
// Called by the legacy path where RenderWidget does the scheduling.
void compositeImmediately();
private:
explicit SingleThreadProxy(LayerTreeHost*);
bool commitAndComposite();
void doCommit(scoped_ptr<ResourceUpdateQueue>);
bool doComposite();
void didSwapFrame();
// Accessed on main thread only.
LayerTreeHost* m_layerTreeHost;
bool m_outputSurfaceLost;
// Holds on to the context between initializeContext() and initializeRenderer() calls. Shouldn't
// be used for anything else.
scoped_ptr<OutputSurface> m_outputSurfaceBeforeInitialization;
// Used on the Thread, but checked on main thread during initialization/shutdown.
scoped_ptr<LayerTreeHostImpl> m_layerTreeHostImpl;
bool m_rendererInitialized;
RendererCapabilities m_RendererCapabilitiesForMainThread;
bool m_nextFrameIsNewlyCommittedFrame;
base::TimeDelta m_totalCommitTime;
size_t m_totalCommitCount;
};
// For use in the single-threaded case. In debug builds, it pretends that the
// code is running on the impl thread to satisfy assertion checks.
class DebugScopedSetImplThread {
public:
explicit DebugScopedSetImplThread(Proxy* proxy)
: m_proxy(proxy)
{
#ifndef NDEBUG
m_previousValue = m_proxy->m_implThreadIsOverridden;
m_proxy->setCurrentThreadIsImplThread(true);
#endif
}
~DebugScopedSetImplThread()
{
#ifndef NDEBUG
m_proxy->setCurrentThreadIsImplThread(m_previousValue);
#endif
}
private:
bool m_previousValue;
Proxy* m_proxy;
};
// For use in the single-threaded case. In debug builds, it pretends that the
// code is running on the main thread to satisfy assertion checks.
class DebugScopedSetMainThread {
public:
explicit DebugScopedSetMainThread(Proxy* proxy)
: m_proxy(proxy)
{
#ifndef NDEBUG
m_previousValue = m_proxy->m_implThreadIsOverridden;
m_proxy->setCurrentThreadIsImplThread(false);
#endif
}
~DebugScopedSetMainThread()
{
#ifndef NDEBUG
m_proxy->setCurrentThreadIsImplThread(m_previousValue);
#endif
}
private:
bool m_previousValue;
Proxy* m_proxy;
};
// For use in the single-threaded case. In debug builds, it pretends that the
// code is running on the impl thread and that the main thread is blocked to
// satisfy assertion checks
class DebugScopedSetImplThreadAndMainThreadBlocked {
public:
explicit DebugScopedSetImplThreadAndMainThreadBlocked(Proxy* proxy)
: m_implThread(proxy)
, m_mainThreadBlocked(proxy)
{
}
private:
DebugScopedSetImplThread m_implThread;
DebugScopedSetMainThreadBlocked m_mainThreadBlocked;
};
} // namespace cc
#endif // CC_SINGLE_THREAD_PROXY_H_
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