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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_UI_VIEWS_MEDIA_PREVIEW_CAMERA_PREVIEW_CAMERA_MEDIATOR_H_
#define CHROME_BROWSER_UI_VIEWS_MEDIA_PREVIEW_CAMERA_PREVIEW_CAMERA_MEDIATOR_H_
#include <string>
#include <vector>
#include "base/scoped_observation.h"
#include "components/media_effects/media_device_info.h"
#include "components/prefs/pref_service.h"
#include "mojo/public/cpp/bindings/pending_receiver.h"
#include "mojo/public/cpp/bindings/remote.h"
#include "services/video_capture/public/mojom/video_source_provider.mojom.h"
// Handles interactions with the backend services for the coordinator.
class CameraMediator : public media_effects::MediaDeviceInfo::Observer {
public:
using DevicesChangedCallback = base::RepeatingCallback<void(
const std::vector<media::VideoCaptureDeviceInfo>& device_infos)>;
explicit CameraMediator(PrefService& prefs,
DevicesChangedCallback devices_changed_callback);
CameraMediator(const CameraMediator&) = delete;
CameraMediator& operator=(const CameraMediator&) = delete;
~CameraMediator() override;
// Connects VideoSource receiver to a particular camera. This connection is
// used later to subscribe to the camera feed.
void BindVideoSource(
const std::string& device_id,
mojo::PendingReceiver<video_capture::mojom::VideoSource> source_receiver);
void InitializeDeviceList();
// Passes ownership of the `video_source_provider_` to the caller.
mojo::Remote<video_capture::mojom::VideoSourceProvider>
TakeVideoSourceProvider() {
return std::move(video_source_provider_);
}
bool IsDeviceListInitialized() const { return is_device_list_initialized_; }
private:
// media_effects::MediaDeviceInfo::Observer overrides.
void OnVideoDevicesChanged(
const std::optional<std::vector<media::VideoCaptureDeviceInfo>>&
device_infos) override;
mojo::Remote<video_capture::mojom::VideoSourceProvider>
video_source_provider_;
raw_ptr<PrefService> prefs_;
DevicesChangedCallback devices_changed_callback_;
base::ScopedObservation<media_effects::MediaDeviceInfo, CameraMediator>
devices_observer_{this};
bool is_device_list_initialized_ = false;
base::WeakPtrFactory<CameraMediator> weak_ptr_factory_{this};
};
#endif // CHROME_BROWSER_UI_VIEWS_MEDIA_PREVIEW_CAMERA_PREVIEW_CAMERA_MEDIATOR_H_
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