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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_TREES_SINGLE_THREAD_PROXY_H_
#define CC_TREES_SINGLE_THREAD_PROXY_H_
#include <limits>
#include "base/time/time.h"
#include "cc/animation/animation_events.h"
#include "cc/output/begin_frame_args.h"
#include "cc/scheduler/scheduler.h"
#include "cc/trees/layer_tree_host_impl.h"
#include "cc/trees/proxy.h"
#include "cc/trees/proxy_timing_history.h"
namespace cc {
class ContextProvider;
class LayerTreeHost;
class LayerTreeHostSingleThreadClient;
class CC_EXPORT SingleThreadProxy : public Proxy,
NON_EXPORTED_BASE(LayerTreeHostImplClient),
SchedulerClient {
public:
static scoped_ptr<Proxy> Create(
LayerTreeHost* layer_tree_host,
LayerTreeHostSingleThreadClient* client,
scoped_refptr<base::SingleThreadTaskRunner> main_task_runner);
virtual ~SingleThreadProxy();
// Proxy implementation
virtual void FinishAllRendering() OVERRIDE;
virtual bool IsStarted() const OVERRIDE;
virtual void SetOutputSurface(scoped_ptr<OutputSurface>) OVERRIDE;
virtual void SetLayerTreeHostClientReady() OVERRIDE;
virtual void SetVisible(bool visible) OVERRIDE;
virtual const RendererCapabilities& GetRendererCapabilities() const OVERRIDE;
virtual void SetNeedsAnimate() OVERRIDE;
virtual void SetNeedsUpdateLayers() OVERRIDE;
virtual void SetNeedsCommit() OVERRIDE;
virtual void SetNeedsRedraw(const gfx::Rect& damage_rect) OVERRIDE;
virtual void SetNextCommitWaitsForActivation() OVERRIDE;
virtual void NotifyInputThrottledUntilCommit() OVERRIDE {}
virtual void SetDeferCommits(bool defer_commits) OVERRIDE;
virtual bool CommitRequested() const OVERRIDE;
virtual bool BeginMainFrameRequested() const OVERRIDE;
virtual void MainThreadHasStoppedFlinging() OVERRIDE {}
virtual void Start() OVERRIDE;
virtual void Stop() OVERRIDE;
virtual size_t MaxPartialTextureUpdates() const OVERRIDE;
virtual void ForceSerializeOnSwapBuffers() OVERRIDE;
virtual bool SupportsImplScrolling() const OVERRIDE;
virtual void AsValueInto(base::debug::TracedValue* state) const OVERRIDE;
virtual bool MainFrameWillHappenForTesting() OVERRIDE;
// SchedulerClient implementation
virtual BeginFrameSource* ExternalBeginFrameSource() OVERRIDE;
virtual void WillBeginImplFrame(const BeginFrameArgs& args) OVERRIDE;
virtual void ScheduledActionSendBeginMainFrame() OVERRIDE;
virtual DrawResult ScheduledActionDrawAndSwapIfPossible() OVERRIDE;
virtual DrawResult ScheduledActionDrawAndSwapForced() OVERRIDE;
virtual void ScheduledActionCommit() OVERRIDE;
virtual void ScheduledActionAnimate() OVERRIDE;
virtual void ScheduledActionUpdateVisibleTiles() OVERRIDE;
virtual void ScheduledActionActivateSyncTree() OVERRIDE;
virtual void ScheduledActionBeginOutputSurfaceCreation() OVERRIDE;
virtual void ScheduledActionManageTiles() OVERRIDE;
virtual void DidAnticipatedDrawTimeChange(base::TimeTicks time) OVERRIDE;
virtual base::TimeDelta DrawDurationEstimate() OVERRIDE;
virtual base::TimeDelta BeginMainFrameToCommitDurationEstimate() OVERRIDE;
virtual base::TimeDelta CommitToActivateDurationEstimate() OVERRIDE;
virtual void DidBeginImplFrameDeadline() OVERRIDE;
// LayerTreeHostImplClient implementation
virtual void UpdateRendererCapabilitiesOnImplThread() OVERRIDE;
virtual void DidLoseOutputSurfaceOnImplThread() OVERRIDE;
virtual void CommitVSyncParameters(base::TimeTicks timebase,
base::TimeDelta interval) OVERRIDE {}
virtual void SetEstimatedParentDrawTime(base::TimeDelta draw_time) OVERRIDE {}
virtual void SetMaxSwapsPendingOnImplThread(int max) OVERRIDE {}
virtual void DidSwapBuffersOnImplThread() OVERRIDE;
virtual void DidSwapBuffersCompleteOnImplThread() OVERRIDE;
virtual void OnCanDrawStateChanged(bool can_draw) OVERRIDE;
virtual void NotifyReadyToActivate() OVERRIDE;
virtual void SetNeedsRedrawOnImplThread() OVERRIDE;
virtual void SetNeedsRedrawRectOnImplThread(
const gfx::Rect& dirty_rect) OVERRIDE;
virtual void SetNeedsAnimateOnImplThread() OVERRIDE;
virtual void SetNeedsManageTilesOnImplThread() OVERRIDE;
virtual void DidInitializeVisibleTileOnImplThread() OVERRIDE;
virtual void SetNeedsCommitOnImplThread() OVERRIDE;
virtual void PostAnimationEventsToMainThreadOnImplThread(
scoped_ptr<AnimationEventsVector> events) OVERRIDE;
virtual bool ReduceContentsTextureMemoryOnImplThread(
size_t limit_bytes,
int priority_cutoff) OVERRIDE;
virtual bool IsInsideDraw() OVERRIDE;
virtual void RenewTreePriority() OVERRIDE {}
virtual void PostDelayedScrollbarFadeOnImplThread(
const base::Closure& start_fade,
base::TimeDelta delay) OVERRIDE {}
virtual void DidActivateSyncTree() OVERRIDE {}
virtual void DidManageTiles() OVERRIDE;
virtual void SetDebugState(const LayerTreeDebugState& debug_state) OVERRIDE {}
void RequestNewOutputSurface();
// Called by the legacy path where RenderWidget does the scheduling.
void CompositeImmediately(base::TimeTicks frame_begin_time);
private:
SingleThreadProxy(
LayerTreeHost* layer_tree_host,
LayerTreeHostSingleThreadClient* client,
scoped_refptr<base::SingleThreadTaskRunner> main_task_runner);
void BeginMainFrame();
void BeginMainFrameAbortedOnImplThread();
void DoCommit(const BeginFrameArgs& begin_frame_args);
DrawResult DoComposite(base::TimeTicks frame_begin_time,
LayerTreeHostImpl::FrameData* frame);
void DoSwap();
void DidCommitAndDrawFrame();
bool ShouldComposite() const;
void UpdateBackgroundAnimateTicking();
// Accessed on main thread only.
LayerTreeHost* layer_tree_host_;
LayerTreeHostSingleThreadClient* client_;
// Used on the Thread, but checked on main thread during
// initialization/shutdown.
scoped_ptr<LayerTreeHostImpl> layer_tree_host_impl_;
RendererCapabilities renderer_capabilities_for_main_thread_;
// Accessed from both threads.
scoped_ptr<Scheduler> scheduler_on_impl_thread_;
ProxyTimingHistory timing_history_;
bool next_frame_is_newly_committed_frame_;
bool inside_draw_;
bool defer_commits_;
bool commit_was_deferred_;
bool commit_requested_;
base::WeakPtrFactory<SingleThreadProxy> weak_factory_;
DISALLOW_COPY_AND_ASSIGN(SingleThreadProxy);
};
// 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) : proxy_(proxy) {
#if DCHECK_IS_ON
previous_value_ = proxy_->impl_thread_is_overridden_;
proxy_->SetCurrentThreadIsImplThread(true);
#endif
}
~DebugScopedSetImplThread() {
#if DCHECK_IS_ON
proxy_->SetCurrentThreadIsImplThread(previous_value_);
#endif
}
private:
bool previous_value_;
Proxy* proxy_;
DISALLOW_COPY_AND_ASSIGN(DebugScopedSetImplThread);
};
// 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) : proxy_(proxy) {
#if DCHECK_IS_ON
previous_value_ = proxy_->impl_thread_is_overridden_;
proxy_->SetCurrentThreadIsImplThread(false);
#endif
}
~DebugScopedSetMainThread() {
#if DCHECK_IS_ON
proxy_->SetCurrentThreadIsImplThread(previous_value_);
#endif
}
private:
bool previous_value_;
Proxy* proxy_;
DISALLOW_COPY_AND_ASSIGN(DebugScopedSetMainThread);
};
// 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)
: impl_thread_(proxy), main_thread_blocked_(proxy) {}
private:
DebugScopedSetImplThread impl_thread_;
DebugScopedSetMainThreadBlocked main_thread_blocked_;
DISALLOW_COPY_AND_ASSIGN(DebugScopedSetImplThreadAndMainThreadBlocked);
};
} // namespace cc
#endif // CC_TREES_SINGLE_THREAD_PROXY_H_
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