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// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_BROWSER_RENDERER_HOST_EMBEDDED_FRAME_SINK_IMPL_H_
#define CONTENT_BROWSER_RENDERER_HOST_EMBEDDED_FRAME_SINK_IMPL_H_
#include <optional>
#include "base/functional/callback.h"
#include "base/memory/raw_ptr.h"
#include "base/time/time.h"
#include "components/viz/common/surfaces/frame_sink_bundle_id.h"
#include "components/viz/common/surfaces/frame_sink_id.h"
#include "components/viz/common/surfaces/surface_info.h"
#include "components/viz/host/host_frame_sink_client.h"
#include "mojo/public/cpp/bindings/pending_receiver.h"
#include "mojo/public/cpp/bindings/pending_remote.h"
#include "mojo/public/cpp/bindings/remote.h"
#include "third_party/blink/public/mojom/frame_sinks/embedded_frame_sink.mojom.h"
namespace viz {
class HostFrameSinkManager;
}
namespace content {
// The browser owned object for an embedded frame sink in a renderer process.
// Both the embedder and embedded frame sink are in the same renderer. Holds a
// client connection to the renderer that is notified when a new SurfaceId
// activates for the embedded frame sink.
class EmbeddedFrameSinkImpl : public viz::HostFrameSinkClient {
public:
using DestroyCallback = base::OnceCallback<void()>;
EmbeddedFrameSinkImpl(
viz::HostFrameSinkManager* host_frame_sink_manager,
const viz::FrameSinkId& parent_frame_sink_id,
const viz::FrameSinkId& frame_sink_id,
mojo::PendingRemote<blink::mojom::EmbeddedFrameSinkClient> client,
DestroyCallback destroy_callback);
EmbeddedFrameSinkImpl(const EmbeddedFrameSinkImpl&) = delete;
EmbeddedFrameSinkImpl& operator=(const EmbeddedFrameSinkImpl&) = delete;
~EmbeddedFrameSinkImpl() override;
const viz::FrameSinkId& frame_sink_id() const { return frame_sink_id_; }
const viz::LocalSurfaceId& local_surface_id() const {
return local_surface_id_;
}
// Creates a CompositorFrameSink connection to FrameSinkManagerImpl.
void CreateCompositorFrameSink(
mojo::PendingRemote<viz::mojom::CompositorFrameSinkClient> client,
mojo::PendingReceiver<viz::mojom::CompositorFrameSink> receiver);
// Creates a CompositorFrameSink connection to FrameSinkManagerImpl, and
// associates the sink with the FrameSinkBundle identified by `bundle_id`.
// Bundles are used to aggregate IPC from related frame sinks into more
// efficient batches.
void CreateBundledCompositorFrameSink(
const viz::FrameSinkBundleId& bundle_id,
mojo::PendingRemote<viz::mojom::CompositorFrameSinkClient> client,
mojo::PendingReceiver<viz::mojom::CompositorFrameSink> receiver);
// Establishes a connection to the embedder of this FrameSink. Allows the
// child to notify its embedder of its LocalSurfaceId changes.
void ConnectToEmbedder(mojo::PendingReceiver<blink::mojom::SurfaceEmbedder>
surface_embedder_receiver);
// Adjusts the frame sink hierarchy for |parent_frame_sink_id_| and
// |frame_sink_id_|.
void RegisterFrameSinkHierarchy();
void UnregisterFrameSinkHierarchy();
// viz::HostFrameSinkClient implementation.
void OnFirstSurfaceActivation(const viz::SurfaceInfo& surface_info) override;
void OnFrameTokenChanged(uint32_t frame_token,
base::TimeTicks activation_time) override;
private:
void CreateFrameSink(
const std::optional<viz::FrameSinkBundleId>& bundle_id,
mojo::PendingRemote<viz::mojom::CompositorFrameSinkClient> client,
mojo::PendingReceiver<viz::mojom::CompositorFrameSink> receiver);
const raw_ptr<viz::HostFrameSinkManager> host_frame_sink_manager_;
mojo::Remote<blink::mojom::EmbeddedFrameSinkClient> client_;
// Surface-related state
const viz::FrameSinkId parent_frame_sink_id_;
const viz::FrameSinkId frame_sink_id_;
viz::LocalSurfaceId local_surface_id_;
bool has_registered_compositor_frame_sink_ = false;
};
} // namespace content
#endif // CONTENT_BROWSER_RENDERER_HOST_EMBEDDED_FRAME_SINK_IMPL_H_
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