| // Copyright 2013 The Flutter 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 FLUTTER_SHELL_COMMON_ANIMATOR_H_ |
| #define FLUTTER_SHELL_COMMON_ANIMATOR_H_ |
| |
| #include <deque> |
| |
| #include "flutter/common/task_runners.h" |
| #include "flutter/fml/memory/ref_ptr.h" |
| #include "flutter/fml/memory/weak_ptr.h" |
| #include "flutter/fml/synchronization/semaphore.h" |
| #include "flutter/fml/time/time_point.h" |
| #include "flutter/shell/common/pipeline.h" |
| #include "flutter/shell/common/rasterizer.h" |
| #include "flutter/shell/common/vsync_waiter.h" |
| |
| namespace flutter { |
| |
| class Animator final { |
| public: |
| class Delegate { |
| public: |
| virtual void OnAnimatorBeginFrame(fml::TimePoint frame_time) = 0; |
| |
| virtual void OnAnimatorNotifyIdle(int64_t deadline) = 0; |
| |
| virtual void OnAnimatorDraw( |
| fml::RefPtr<Pipeline<flutter::LayerTree>> pipeline) = 0; |
| |
| virtual void OnAnimatorDrawLastLayerTree() = 0; |
| }; |
| |
| Animator(Delegate& delegate, |
| TaskRunners task_runners, |
| std::unique_ptr<VsyncWaiter> waiter); |
| |
| ~Animator(); |
| |
| float GetDisplayRefreshRate() const; |
| |
| void RequestFrame(bool regenerate_layer_tree = true); |
| |
| void Render(std::unique_ptr<flutter::LayerTree> layer_tree); |
| |
| void Start(); |
| |
| void Stop(); |
| |
| void SetDimensionChangePending(); |
| |
| // Enqueue |trace_flow_id| into |trace_flow_ids_|. The corresponding flow |
| // will be ended during the next |BeginFrame|. |
| void EnqueueTraceFlowId(uint64_t trace_flow_id); |
| |
| private: |
| using LayerTreePipeline = Pipeline<flutter::LayerTree>; |
| |
| void BeginFrame(fml::TimePoint frame_start_time, |
| fml::TimePoint frame_target_time); |
| |
| bool CanReuseLastLayerTree(); |
| void DrawLastLayerTree(); |
| |
| void AwaitVSync(); |
| |
| const char* FrameParity(); |
| |
| Delegate& delegate_; |
| TaskRunners task_runners_; |
| std::shared_ptr<VsyncWaiter> waiter_; |
| |
| fml::TimePoint last_begin_frame_time_; |
| int64_t dart_frame_deadline_; |
| fml::RefPtr<LayerTreePipeline> layer_tree_pipeline_; |
| fml::Semaphore pending_frame_semaphore_; |
| LayerTreePipeline::ProducerContinuation producer_continuation_; |
| int64_t frame_number_; |
| bool paused_; |
| bool regenerate_layer_tree_; |
| bool frame_scheduled_; |
| int notify_idle_task_id_; |
| bool dimension_change_pending_; |
| SkISize last_layer_tree_size_; |
| std::deque<uint64_t> trace_flow_ids_; |
| |
| fml::WeakPtrFactory<Animator> weak_factory_; |
| |
| FML_DISALLOW_COPY_AND_ASSIGN(Animator); |
| }; |
| |
| } // namespace flutter |
| |
| #endif // FLUTTER_SHELL_COMMON_ANIMATOR_H_ |