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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_THREAD_PROXY_H_
#define CC_THREAD_PROXY_H_
#include "base/time.h"
#include "cc/animation_events.h"
#include "cc/completion_event.h"
#include "cc/layer_tree_host_impl.h"
#include "cc/proxy.h"
#include "cc/resource_update_controller.h"
#include "cc/scheduler.h"
namespace cc {
class InputHandler;
class LayerTreeHost;
class ResourceUpdateQueue;
class Scheduler;
class ScopedThreadProxy;
class Thread;
class ThreadProxy : public Proxy, LayerTreeHostImplClient, SchedulerClient, ResourceUpdateControllerClient {
public:
static scoped_ptr<Proxy> create(LayerTreeHost*);
virtual ~ThreadProxy();
// 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 initializeContext() OVERRIDE;
virtual void setSurfaceReady() OVERRIDE;
virtual void setVisible(bool) OVERRIDE;
virtual bool initializeRenderer() OVERRIDE;
virtual bool recreateContext() OVERRIDE;
virtual void renderingStats(RenderingStats*) OVERRIDE;
virtual const RendererCapabilities& rendererCapabilities() const OVERRIDE;
virtual void loseContext() 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 start() OVERRIDE;
virtual void stop() OVERRIDE;
virtual size_t maxPartialTextureUpdates() const OVERRIDE;
virtual void acquireLayerTextures() OVERRIDE;
virtual void forceSerializeOnSwapBuffers() OVERRIDE;
// LayerTreeHostImplClient implementation
virtual void didLoseContextOnImplThread() 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 postAnimationEventsToMainThreadOnImplThread(scoped_ptr<AnimationEventsVector>, base::Time wallClockTime) OVERRIDE;
virtual bool reduceContentsTextureMemoryOnImplThread(size_t limitBytes, int priorityCutoff) OVERRIDE;
virtual void sendManagedMemoryStats() OVERRIDE;
// SchedulerClient implementation
virtual void scheduledActionBeginFrame() OVERRIDE;
virtual ScheduledActionDrawAndSwapResult scheduledActionDrawAndSwapIfPossible() OVERRIDE;
virtual ScheduledActionDrawAndSwapResult scheduledActionDrawAndSwapForced() OVERRIDE;
virtual void scheduledActionCommit() OVERRIDE;
virtual void scheduledActionBeginContextRecreation() OVERRIDE;
virtual void scheduledActionAcquireLayerTexturesForMainThread() OVERRIDE;
virtual void didAnticipatedDrawTimeChange(base::TimeTicks) OVERRIDE;
// ResourceUpdateControllerClient implementation
virtual void readyToFinalizeTextureUpdates() OVERRIDE;
private:
explicit ThreadProxy(LayerTreeHost*);
// Set on impl thread, read on main thread.
struct BeginFrameAndCommitState {
BeginFrameAndCommitState();
~BeginFrameAndCommitState();
base::TimeTicks monotonicFrameBeginTime;
scoped_ptr<ScrollAndScaleSet> scrollInfo;
WebKit::WebTransformationMatrix implTransform;
PrioritizedTextureManager::BackingList evictedContentsTexturesBackings;
size_t memoryAllocationLimitBytes;
};
scoped_ptr<BeginFrameAndCommitState> m_pendingBeginFrameRequest;
// Called on main thread
void beginFrame();
void didCommitAndDrawFrame();
void didCompleteSwapBuffers();
void setAnimationEvents(scoped_ptr<AnimationEventsVector>, base::Time wallClockTime);
void beginContextRecreation();
void tryToRecreateContext();
// Called on impl thread
struct ReadbackRequest {
CompletionEvent completion;
bool success;
void* pixels;
gfx::Rect rect;
};
void forceBeginFrameOnImplThread(CompletionEvent*);
void beginFrameCompleteOnImplThread(CompletionEvent*, ResourceUpdateQueue*);
void beginFrameAbortedOnImplThread();
void requestReadbackOnImplThread(ReadbackRequest*);
void requestStartPageScaleAnimationOnImplThread(gfx::Vector2d targetOffset, bool useAnchor, float scale, base::TimeDelta duration);
void finishAllRenderingOnImplThread(CompletionEvent*);
void initializeImplOnImplThread(CompletionEvent*, InputHandler*);
void setSurfaceReadyOnImplThread();
void setVisibleOnImplThread(CompletionEvent*, bool);
void initializeContextOnImplThread(scoped_ptr<GraphicsContext>);
void initializeRendererOnImplThread(CompletionEvent*, bool* initializeSucceeded, RendererCapabilities*);
void layerTreeHostClosedOnImplThread(CompletionEvent*);
void setFullRootLayerDamageOnImplThread();
void acquireLayerTexturesForMainThreadOnImplThread(CompletionEvent*);
void recreateContextOnImplThread(CompletionEvent*, scoped_ptr<GraphicsContext>, bool* recreateSucceeded, RendererCapabilities*);
void renderingStatsOnImplThread(CompletionEvent*, RenderingStats*);
ScheduledActionDrawAndSwapResult scheduledActionDrawAndSwapInternal(bool forcedDraw);
void forceSerializeOnSwapBuffersOnImplThread(CompletionEvent*);
void setNeedsForcedCommitOnImplThread();
// Accessed on main thread only.
bool m_animateRequested; // Set only when setNeedsAnimate is called.
bool m_commitRequested; // Set only when setNeedsCommit is called.
bool m_commitRequestSentToImplThread; // Set by setNeedsCommit and setNeedsAnimate.
bool m_forcedCommitRequested;
base::CancelableClosure m_contextRecreationCallback;
LayerTreeHost* m_layerTreeHost;
bool m_rendererInitialized;
RendererCapabilities m_RendererCapabilitiesMainThreadCopy;
bool m_started;
bool m_texturesAcquired;
bool m_inCompositeAndReadback;
scoped_ptr<LayerTreeHostImpl> m_layerTreeHostImpl;
scoped_ptr<InputHandler> m_inputHandlerOnImplThread;
scoped_ptr<Scheduler> m_schedulerOnImplThread;
scoped_refptr<ScopedThreadProxy> m_mainThreadProxy;
// Holds on to the context we might use for compositing in between initializeContext()
// and initializeRenderer() calls.
scoped_ptr<GraphicsContext> m_contextBeforeInitializationOnImplThread;
// Set when the main thread is waiting on a scheduledActionBeginFrame to be issued.
CompletionEvent* m_beginFrameCompletionEventOnImplThread;
// Set when the main thread is waiting on a readback.
ReadbackRequest* m_readbackRequestOnImplThread;
// Set when the main thread is waiting on a commit to complete.
CompletionEvent* m_commitCompletionEventOnImplThread;
// Set when the main thread is waiting on layers to be drawn.
CompletionEvent* m_textureAcquisitionCompletionEventOnImplThread;
scoped_ptr<ResourceUpdateController> m_currentResourceUpdateControllerOnImplThread;
// Set when the next draw should post didCommitAndDrawFrame to the main thread.
bool m_nextFrameIsNewlyCommittedFrameOnImplThread;
bool m_renderVSyncEnabled;
base::TimeDelta m_totalCommitTime;
size_t m_totalCommitCount;
bool m_deferCommits;
bool m_deferredCommitPending;
};
} // namespace cc
#endif // CC_THREAD_PROXY_H_
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