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Unified Diff: components/exo/compositor_frame_sink_holder.h

Issue 2493223002: Change exo::SurfaceFactoryOwner to exo::ExoCompositorFrameSink (Closed)
Patch Set: Override DesktopMediaListAshTest::TearDown() to reset list_ Created 4 years ago
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Index: components/exo/compositor_frame_sink_holder.h
diff --git a/components/exo/compositor_frame_sink_holder.h b/components/exo/compositor_frame_sink_holder.h
new file mode 100644
index 0000000000000000000000000000000000000000..59cc9879e8908be5adeeae3adf1a92fa5b83bd4c
--- /dev/null
+++ b/components/exo/compositor_frame_sink_holder.h
@@ -0,0 +1,108 @@
+// Copyright 2016 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 COMPONENTS_EXO_COMPOSITOR_FRAME_SINK_HOLDER_H_
+#define COMPONENTS_EXO_COMPOSITOR_FRAME_SINK_HOLDER_H_
+
+#include <list>
+#include <map>
+#include <memory>
+
+#include "cc/ipc/mojo_compositor_frame_sink.mojom.h"
+#include "cc/resources/single_release_callback.h"
+#include "cc/resources/transferable_resource.h"
+#include "cc/scheduler/begin_frame_source.h"
+#include "components/exo/compositor_frame_sink.h"
+#include "components/exo/surface_observer.h"
+#include "mojo/public/cpp/bindings/binding.h"
+
+namespace exo {
+class Surface;
+
+// This class talks to MojoCompositorFrameSink and keeps track of references to
+// the contents of Buffers. It's keeped alive by references from
+// release_callbacks_. It's destroyed when its owning Surface is destroyed and
+// the last outstanding release callback is called.
+class CompositorFrameSinkHolder
+ : public base::RefCounted<CompositorFrameSinkHolder>,
+ public cc::ExternalBeginFrameSourceClient,
+ public cc::mojom::MojoCompositorFrameSinkClient,
+ public cc::BeginFrameObserver,
+ public SurfaceObserver {
+ public:
+ CompositorFrameSinkHolder(
+ Surface* surface,
+ std::unique_ptr<CompositorFrameSink> frame_sink,
+ cc::mojom::MojoCompositorFrameSinkClientRequest request);
+
+ bool HasReleaseCallbackForResource(cc::ResourceId id);
+ void AddResourceReleaseCallback(
+ cc::ResourceId id,
+ std::unique_ptr<cc::SingleReleaseCallback> callback);
+
+ CompositorFrameSink* GetCompositorFrameSink() { return frame_sink_.get(); }
+
+ base::WeakPtr<CompositorFrameSinkHolder> GetWeakPtr() {
+ return weak_factory_.GetWeakPtr();
+ }
+
+ using FrameCallback = base::Callback<void(base::TimeTicks frame_time)>;
+ void ActivateFrameCallbacks(std::list<FrameCallback>* frame_callbacks);
+ void CancelFrameCallbacks();
+
+ void SetNeedsBeginFrame(bool needs_begin_frame);
+
+ void Satisfy(const cc::SurfaceSequence& sequence);
+ void Require(const cc::SurfaceId& id, const cc::SurfaceSequence& sequence);
+
+ // Overridden from cc::mojom::MojoCompositorFrameSinkClient:
+ void DidReceiveCompositorFrameAck() override;
+ void OnBeginFrame(const cc::BeginFrameArgs& args) override;
+ void ReclaimResources(const cc::ReturnedResourceArray& resources) override;
+ void WillDrawSurface() override;
+
+ // Overridden from cc::BeginFrameObserver:
+ const cc::BeginFrameArgs& LastUsedBeginFrameArgs() const override;
+ void OnBeginFrameSourcePausedChanged(bool paused) override;
+
+ // Overridden from cc::ExternalBeginFrameSouceClient:
+ void OnNeedsBeginFrames(bool needs_begin_frames) override;
+
+ // Overridden from SurfaceObserver:
+ void OnSurfaceDestroying(Surface* surface) override;
+
+ private:
+ friend class base::RefCounted<CompositorFrameSinkHolder>;
+
+ ~CompositorFrameSinkHolder() override;
+
+ void UpdateNeedsBeginFrame();
+
+ // Each release callback holds a reference to the CompositorFrameSinkHolder
+ // itself to keep it alive. Running and erasing the callbacks might result in
+ // the instance being destroyed. Therefore, we should not access any member
+ // variables after running and erasing the callbacks.
+ using ResourceReleaseCallbackMap =
+ std::map<int,
+ std::pair<scoped_refptr<CompositorFrameSinkHolder>,
+ std::unique_ptr<cc::SingleReleaseCallback>>>;
+ ResourceReleaseCallbackMap release_callbacks_;
+
+ Surface* surface_;
+ std::unique_ptr<CompositorFrameSink> frame_sink_;
+
+ std::list<FrameCallback> active_frame_callbacks_;
+ std::unique_ptr<cc::ExternalBeginFrameSource> begin_frame_source_;
+ bool needs_begin_frame_ = false;
+ cc::BeginFrameArgs last_begin_frame_args_;
+ mojo::Binding<cc::mojom::MojoCompositorFrameSinkClient> binding_;
+
+ base::WeakPtrFactory<CompositorFrameSinkHolder> weak_factory_;
+
+ DISALLOW_COPY_AND_ASSIGN(CompositorFrameSinkHolder);
+};
+
+} // namespace exo
+
+#endif // COMPONENTS_EXO_COMPOSITOR_FRAME_SINK_HOLDER_H_
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