// Copyright 2022 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 ASH_MULTI_CAPTURE_MULTI_CAPTURE_SERVICE_CLIENT_H_ #define ASH_MULTI_CAPTURE_MULTI_CAPTURE_SERVICE_CLIENT_H_ #include #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 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; protected: ~Observer() override = default; }; explicit MultiCaptureServiceClient( mojo::PendingRemote 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 multi_capture_service_; mojo::Receiver multi_capture_service_observer_receiver_{this}; base::ObserverList observers_; }; } // namespace ash #endif // ASH_VIDEO_CAPTURE_MULTI_CAPTURE_SERVICE_CLIENT_H_