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// Copyright 2020 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_GLOBAL_MEDIA_CONTROLS_MEDIA_NOTIFICATION_DEVICE_PROVIDER_IMPL_H_
#define CHROME_BROWSER_UI_GLOBAL_MEDIA_CONTROLS_MEDIA_NOTIFICATION_DEVICE_PROVIDER_IMPL_H_
#include "base/memory/weak_ptr.h"
#include "chrome/browser/ui/global_media_controls/media_notification_device_monitor.h"
#include "chrome/browser/ui/global_media_controls/media_notification_device_provider.h"
#include "media/audio/audio_device_description.h"
class MediaNotificationDeviceProviderImpl
: public MediaNotificationDeviceProvider,
public MediaNotificationDeviceMonitor::DevicesChangedObserver {
public:
explicit MediaNotificationDeviceProviderImpl(
std::unique_ptr<media::AudioSystem> audio_system);
MediaNotificationDeviceProviderImpl(
const MediaNotificationDeviceProviderImpl&) = delete;
MediaNotificationDeviceProviderImpl& operator=(
const MediaNotificationDeviceProviderImpl&) = delete;
~MediaNotificationDeviceProviderImpl() override;
// MediaNotificationDeviceProvider
base::CallbackListSubscription RegisterOutputDeviceDescriptionsCallback(
GetOutputDevicesCallback cb) override;
void GetOutputDeviceDescriptions(
media::AudioSystem::OnDeviceDescriptionsCallback on_descriptions_cb)
override;
// MediaNotificationDeviceMonitor::DevicesChangedObserver
void OnDevicesChanged() override;
private:
void GetDevices();
void NotifySubscribers(media::AudioDeviceDescriptions descriptions);
void OnSubscriberRemoved();
bool is_querying_for_output_devices_ = false;
bool has_device_list_ = false;
MediaNotificationDeviceProvider::GetOutputDevicesCallbackList
output_device_callback_list_;
std::unique_ptr<media::AudioSystem> audio_system_;
std::unique_ptr<MediaNotificationDeviceMonitor> monitor_;
media::AudioDeviceDescriptions audio_device_descriptions_;
base::WeakPtrFactory<MediaNotificationDeviceProviderImpl> weak_ptr_factory_{
this};
};
#endif // CHROME_BROWSER_UI_GLOBAL_MEDIA_CONTROLS_MEDIA_NOTIFICATION_DEVICE_PROVIDER_IMPL_H_
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