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60 lines
1.5 KiB
C++
60 lines
1.5 KiB
C++
// Copyright 2015 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef FLUTTER_SHELL_COMMON_ANIMATOR_H_
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#define FLUTTER_SHELL_COMMON_ANIMATOR_H_
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#include "flutter/shell/common/engine.h"
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#include "flutter/shell/common/rasterizer.h"
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#include "flutter/shell/common/vsync_waiter.h"
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#include "flutter/synchronization/pipeline.h"
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#include "flutter/synchronization/semaphore.h"
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#include "lib/ftl/memory/ref_ptr.h"
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#include "lib/ftl/memory/weak_ptr.h"
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#include "lib/ftl/time/time_point.h"
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namespace shell {
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class Animator {
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public:
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Animator(ftl::WeakPtr<Rasterizer> rasterizer,
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VsyncWaiter* waiter,
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Engine* engine);
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~Animator();
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void RequestFrame();
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void Render(std::unique_ptr<flow::LayerTree> layer_tree);
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void Start();
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void Stop();
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private:
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using LayerTreePipeline = flutter::Pipeline<flow::LayerTree>;
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void BeginFrame(ftl::TimePoint frame_time);
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void AwaitVSync();
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ftl::WeakPtr<Rasterizer> rasterizer_;
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VsyncWaiter* waiter_;
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Engine* engine_;
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ftl::TimePoint last_begin_frame_time_;
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ftl::RefPtr<LayerTreePipeline> layer_tree_pipeline_;
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flutter::Semaphore pending_frame_semaphore_;
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LayerTreePipeline::ProducerContinuation producer_continuation_;
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bool paused_;
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ftl::WeakPtrFactory<Animator> weak_factory_;
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FTL_DISALLOW_COPY_AND_ASSIGN(Animator);
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};
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} // namespace shell
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#endif // FLUTTER_SHELL_COMMON_ANIMATOR_H_
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