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// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef ASH_MULTI_CAPTURE_MULTI_CAPTURE_SERVICE_CLIENT_H_
#define ASH_MULTI_CAPTURE_MULTI_CAPTURE_SERVICE_CLIENT_H_
#include <string>
#include "ash/ash_export.h"
#include "base/observer_list.h"
#include "base/observer_list_types.h"
#include "mojo/public/cpp/bindings/receiver.h"
#include "mojo/public/cpp/bindings/remote.h"
#include "services/video_capture/public/mojom/multi_capture_service.mojom.h"
#include "url/origin.h"
namespace ash {
// Client of the MultiCaptureService mojo interface. Receives events about
// multi captures being started / stopped and forwards it to ash clients to
// show usage indicators.
class ASH_EXPORT MultiCaptureServiceClient
: public video_capture::mojom::MultiCaptureServiceClient {
public:
class Observer : public base::CheckedObserver {
public:
// Event to inform about a started multi capture. The label is a unique
// identifier that can be used to connect started / stopped events.
// The origin is the capturer's origin.
// TODO(crbug.com/1325750): Consider transferred tracks by either adding
// a MultiCaptureTransferred event or by making sure the label remains
// constant throughout the lifetime of the capture.
virtual void MultiCaptureStarted(const std::string& label,
const url::Origin& origin) = 0;
virtual void MultiCaptureStopped(const std::string& label) = 0;
virtual void MultiCaptureServiceClientDestroyed() = 0;
protected:
~Observer() override = default;
};
explicit MultiCaptureServiceClient(
mojo::PendingRemote<video_capture::mojom::MultiCaptureService>
multi_capture_service);
~MultiCaptureServiceClient() override;
MultiCaptureServiceClient(const MultiCaptureServiceClient&) = delete;
MultiCaptureServiceClient& operator=(const MultiCaptureServiceClient&) =
delete;
void AddObserver(Observer* observer);
void RemoveObserver(Observer* observer);
// video_capture::mojom::MultiCaptureService:
void MultiCaptureStarted(const std::string& label,
const url::Origin& origin) override;
void MultiCaptureStopped(const std::string& label) override;
private:
mojo::Remote<video_capture::mojom::MultiCaptureService>
multi_capture_service_;
mojo::Receiver<video_capture::mojom::MultiCaptureServiceClient>
multi_capture_service_observer_receiver_{this};
base::ObserverList<Observer> observers_;
};
} // namespace ash
#endif // ASH_VIDEO_CAPTURE_MULTI_CAPTURE_SERVICE_CLIENT_H_
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