chromium/chrome/browser/ui/global_media_controls/media_notification_device_provider_impl.cc

// 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.

#include "chrome/browser/ui/global_media_controls/media_notification_device_provider_impl.h"

#include <algorithm>

#include "base/ranges/algorithm.h"
#include "chrome/browser/ui/global_media_controls/media_notification_device_monitor.h"
#include "content/public/browser/audio_service.h"
#include "media/audio/audio_device_description.h"

namespace {
// Remove the default fallback device from the given list of audio device
// descriptions if it is possible to determine which of the other devices is
// fallen back to. If such a device is found, it's unique id will be
// overwritten with |media::AudioDeviceDescription::kDefaultDeviceId|.
void MaybeRemoveDefaultDevice(media::AudioDeviceDescriptions& descriptions) { … }

}  // anonymous namespace

MediaNotificationDeviceProviderImpl::MediaNotificationDeviceProviderImpl(
    std::unique_ptr<media::AudioSystem> audio_system)
    : … { … }

MediaNotificationDeviceProviderImpl::~MediaNotificationDeviceProviderImpl() { … }

base::CallbackListSubscription
MediaNotificationDeviceProviderImpl::RegisterOutputDeviceDescriptionsCallback(
    GetOutputDevicesCallback cb) { … }

void MediaNotificationDeviceProviderImpl::GetOutputDeviceDescriptions(
    media::AudioSystem::OnDeviceDescriptionsCallback cb) { … }

void MediaNotificationDeviceProviderImpl::OnDevicesChanged() { … }

void MediaNotificationDeviceProviderImpl::GetDevices() { … }

void MediaNotificationDeviceProviderImpl::NotifySubscribers(
    media::AudioDeviceDescriptions descriptions) { … }

void MediaNotificationDeviceProviderImpl::OnSubscriberRemoved() { … }