| /* |
| * Copyright (C) 2020 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.systemui.media |
| |
| import android.app.Notification |
| import android.content.Context |
| import android.service.notification.StatusBarNotification |
| import android.media.MediaRouter2Manager |
| import android.media.session.MediaSession |
| import android.media.session.MediaController |
| import com.android.settingslib.media.LocalMediaManager |
| import com.android.settingslib.media.MediaDevice |
| import com.android.systemui.dagger.qualifiers.Main |
| import java.util.concurrent.Executor |
| import javax.inject.Inject |
| import javax.inject.Singleton |
| |
| /** |
| * Provides information about the route (ie. device) where playback is occurring. |
| */ |
| @Singleton |
| class MediaDeviceManager @Inject constructor( |
| private val context: Context, |
| private val localMediaManagerFactory: LocalMediaManagerFactory, |
| private val mr2manager: MediaRouter2Manager, |
| private val featureFlag: MediaFeatureFlag, |
| @Main private val fgExecutor: Executor |
| ) { |
| private val listeners: MutableSet<Listener> = mutableSetOf() |
| private val entries: MutableMap<String, Token> = mutableMapOf() |
| |
| /** |
| * Add a listener for changes to the media route (ie. device). |
| */ |
| fun addListener(listener: Listener) = listeners.add(listener) |
| |
| /** |
| * Remove a listener that has been registered with addListener. |
| */ |
| fun removeListener(listener: Listener) = listeners.remove(listener) |
| |
| fun onNotificationAdded(key: String, sbn: StatusBarNotification) { |
| if (featureFlag.enabled && isMediaNotification(sbn)) { |
| var tok = entries[key] |
| if (tok == null) { |
| val token = sbn.notification.extras.getParcelable(Notification.EXTRA_MEDIA_SESSION) |
| as MediaSession.Token? |
| val controller = MediaController(context, token) |
| tok = Token(key, controller, localMediaManagerFactory.create(sbn.packageName)) |
| entries[key] = tok |
| tok.start() |
| } |
| } else { |
| onNotificationRemoved(key) |
| } |
| } |
| |
| fun onNotificationRemoved(key: String) { |
| val token = entries.remove(key) |
| token?.stop() |
| token?.let { |
| listeners.forEach { |
| it.onKeyRemoved(key) |
| } |
| } |
| } |
| |
| private fun processDevice(key: String, device: MediaDevice?) { |
| val enabled = device != null |
| val data = MediaDeviceData(enabled, device?.iconWithoutBackground, device?.name) |
| listeners.forEach { |
| it.onMediaDeviceChanged(key, data) |
| } |
| } |
| |
| interface Listener { |
| /** Called when the route has changed for a given notification. */ |
| fun onMediaDeviceChanged(key: String, data: MediaDeviceData?) |
| /** Called when the notification was removed. */ |
| fun onKeyRemoved(key: String) |
| } |
| |
| private inner class Token( |
| val key: String, |
| val controller: MediaController, |
| val localMediaManager: LocalMediaManager |
| ) : LocalMediaManager.DeviceCallback { |
| private var started = false |
| private var current: MediaDevice? = null |
| set(value) { |
| if (!started || value != field) { |
| field = value |
| processDevice(key, value) |
| } |
| } |
| fun start() { |
| localMediaManager.registerCallback(this) |
| localMediaManager.startScan() |
| updateCurrent() |
| started = true |
| } |
| fun stop() { |
| started = false |
| localMediaManager.stopScan() |
| localMediaManager.unregisterCallback(this) |
| } |
| override fun onDeviceListUpdate(devices: List<MediaDevice>?) = fgExecutor.execute { |
| updateCurrent() |
| } |
| override fun onSelectedDeviceStateChanged(device: MediaDevice, state: Int) { |
| fgExecutor.execute { |
| updateCurrent() |
| } |
| } |
| private fun updateCurrent() { |
| val device = localMediaManager.getCurrentConnectedDevice() |
| val route = mr2manager.getRoutingSessionForMediaController(controller) |
| // If we get a null route, then don't trust the device. Just set to null to disable the |
| // output switcher chip. |
| current = if (route != null) device else null |
| } |
| } |
| } |