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// Copyright 2018 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_VIZ_SERVICE_DISPLAY_EMBEDDER_EXTERNAL_BEGIN_FRAME_CONTROLLER_IMPL_H_
#define COMPONENTS_VIZ_SERVICE_DISPLAY_EMBEDDER_EXTERNAL_BEGIN_FRAME_CONTROLLER_IMPL_H_
#include <memory>
#include "components/viz/common/frame_sinks/begin_frame_args.h"
#include "components/viz/common/frame_sinks/begin_frame_source.h"
#include "components/viz/service/display/display.h"
#include "mojo/public/cpp/bindings/associated_binding.h"
#include "services/viz/privileged/interfaces/compositing/external_begin_frame_controller.mojom.h"
namespace viz {
// In-process implementation of the ExternalBeginFrameController interface.
// Owns an ExternalBeginFrameSource that replaces the Display's default
// BeginFrameSource. Observes the Display to be notified of BeginFrame
// completion.
class VIZ_SERVICE_EXPORT ExternalBeginFrameControllerImpl
: public mojom::ExternalBeginFrameController,
public ExternalBeginFrameSourceClient,
public DisplayObserver {
public:
ExternalBeginFrameControllerImpl(
mojom::ExternalBeginFrameControllerAssociatedRequest controller_request,
mojom::ExternalBeginFrameControllerClientPtr client);
~ExternalBeginFrameControllerImpl() override;
// mojom::ExternalBeginFrameController implementation.
void IssueExternalBeginFrame(const BeginFrameArgs& args) override;
BeginFrameSource* begin_frame_source() { return &begin_frame_source_; }
void SetDisplay(Display* display);
private:
// ExternalBeginFrameSourceClient implementation.
void OnNeedsBeginFrames(bool needs_begin_frames) override;
// DisplayObserver implementation.
void OnDisplayDidFinishFrame(const BeginFrameAck& ack) override;
mojo::AssociatedBinding<mojom::ExternalBeginFrameController> binding_;
mojom::ExternalBeginFrameControllerClientPtr client_;
ExternalBeginFrameSource begin_frame_source_;
bool needs_begin_frames_ = false;
Display* display_ = nullptr;
};
} // namespace viz
#endif // COMPONENTS_VIZ_SERVICE_DISPLAY_EMBEDDER_EXTERNAL_BEGIN_FRAME_CONTROLLER_IMPL_H_
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