Initial import.

1 files changed, 138 insertions, 0 deletions

diff --git a/chromium/cc/scheduler/scheduler.h b/chromium/cc/scheduler/scheduler.h
new file mode 100644
index 00000000000..230f20d0ec9
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+++ b/chromium/cc/scheduler/scheduler.h
@@ -0,0 +1,138 @@
+// 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_SCHEDULER_SCHEDULER_H_
+#define CC_SCHEDULER_SCHEDULER_H_
+
+#include <string>
+
+#include "base/basictypes.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/time/time.h"
+#include "cc/base/cc_export.h"
+#include "cc/output/begin_frame_args.h"
+#include "cc/scheduler/scheduler_settings.h"
+#include "cc/scheduler/scheduler_state_machine.h"
+#include "cc/trees/layer_tree_host.h"
+
+namespace cc {
+
+class Thread;
+
+struct ScheduledActionDrawAndSwapResult {
+  ScheduledActionDrawAndSwapResult()
+      : did_draw(false),
+        did_swap(false) {}
+  ScheduledActionDrawAndSwapResult(bool did_draw, bool did_swap)
+      : did_draw(did_draw),
+        did_swap(did_swap) {}
+  bool did_draw;
+  bool did_swap;
+};
+
+class SchedulerClient {
+ public:
+  virtual void SetNeedsBeginFrameOnImplThread(bool enable) = 0;
+  virtual void ScheduledActionSendBeginFrameToMainThread() = 0;
+  virtual ScheduledActionDrawAndSwapResult
+  ScheduledActionDrawAndSwapIfPossible() = 0;
+  virtual ScheduledActionDrawAndSwapResult
+  ScheduledActionDrawAndSwapForced() = 0;
+  virtual void ScheduledActionCommit() = 0;
+  virtual void ScheduledActionUpdateVisibleTiles() = 0;
+  virtual void ScheduledActionActivatePendingTreeIfNeeded() = 0;
+  virtual void ScheduledActionBeginOutputSurfaceCreation() = 0;
+  virtual void ScheduledActionAcquireLayerTexturesForMainThread() = 0;
+  virtual void DidAnticipatedDrawTimeChange(base::TimeTicks time) = 0;
+  virtual base::TimeDelta DrawDurationEstimate() = 0;
+  virtual base::TimeDelta BeginFrameToCommitDurationEstimate() = 0;
+  virtual base::TimeDelta CommitToActivateDurationEstimate() = 0;
+
+ protected:
+  virtual ~SchedulerClient() {}
+};
+
+class CC_EXPORT Scheduler {
+ public:
+  static scoped_ptr<Scheduler> Create(
+      SchedulerClient* client,
+      const SchedulerSettings& scheduler_settings) {
+    return make_scoped_ptr(new Scheduler(client,  scheduler_settings));
+  }
+
+  virtual ~Scheduler();
+
+  void SetCanStart();
+
+  void SetVisible(bool visible);
+  void SetCanDraw(bool can_draw);
+  void SetHasPendingTree(bool has_pending_tree);
+
+  void SetNeedsCommit();
+
+  // Like SetNeedsCommit(), but ensures a commit will definitely happen even if
+  // we are not visible.
+  void SetNeedsForcedCommit();
+
+  void SetNeedsRedraw();
+
+  void SetMainThreadNeedsLayerTextures();
+
+  // Like SetNeedsRedraw(), but ensures the draw will definitely happen even if
+  // we are not visible.
+  void SetNeedsForcedRedraw();
+
+  void DidSwapUseIncompleteTile();
+
+  void FinishCommit();
+  void BeginFrameAbortedByMainThread(bool did_handle);
+
+  void DidLoseOutputSurface();
+  void DidCreateAndInitializeOutputSurface();
+  bool HasInitializedOutputSurface() const {
+    return state_machine_.HasInitializedOutputSurface();
+  }
+
+  bool CommitPending() const { return state_machine_.CommitPending(); }
+  bool RedrawPending() const { return state_machine_.RedrawPending(); }
+
+  bool WillDrawIfNeeded() const;
+
+  base::TimeTicks AnticipatedDrawTime();
+
+  base::TimeTicks LastBeginFrameOnImplThreadTime();
+
+  void BeginFrame(const BeginFrameArgs& args);
+
+  std::string StateAsStringForTesting() { return state_machine_.ToString(); }
+
+ private:
+  Scheduler(SchedulerClient* client,
+            const SchedulerSettings& scheduler_settings);
+
+  void SetupNextBeginFrameIfNeeded();
+  void DrawAndSwapIfPossible();
+  void DrawAndSwapForced();
+  void ProcessScheduledActions();
+
+  const SchedulerSettings settings_;
+  SchedulerClient* client_;
+
+  base::WeakPtrFactory<Scheduler> weak_factory_;
+  bool last_set_needs_begin_frame_;
+  bool has_pending_begin_frame_;
+  // TODO(brianderson): crbug.com/249806 : Remove safe_to_expect_begin_frame_
+  // workaround.
+  bool safe_to_expect_begin_frame_;
+  BeginFrameArgs last_begin_frame_args_;
+
+  SchedulerStateMachine state_machine_;
+  bool inside_process_scheduled_actions_;
+
+  DISALLOW_COPY_AND_ASSIGN(Scheduler);
+};
+
+}  // namespace cc
+
+#endif  // CC_SCHEDULER_SCHEDULER_H_