| /* |
| * Copyright 2019 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.server.media; |
| |
| import static android.media.MediaRoute2Info.FEATURE_LIVE_AUDIO; |
| import static android.media.MediaRoute2Info.FEATURE_LIVE_VIDEO; |
| import static android.media.MediaRoute2Info.TYPE_BUILTIN_SPEAKER; |
| import static android.media.MediaRoute2Info.TYPE_DOCK; |
| import static android.media.MediaRoute2Info.TYPE_HDMI; |
| import static android.media.MediaRoute2Info.TYPE_USB_DEVICE; |
| import static android.media.MediaRoute2Info.TYPE_WIRED_HEADPHONES; |
| import static android.media.MediaRoute2Info.TYPE_WIRED_HEADSET; |
| |
| import android.content.BroadcastReceiver; |
| import android.content.ComponentName; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.IntentFilter; |
| import android.media.AudioManager; |
| import android.media.AudioRoutesInfo; |
| import android.media.IAudioRoutesObserver; |
| import android.media.IAudioService; |
| import android.media.MediaRoute2Info; |
| import android.media.MediaRoute2ProviderInfo; |
| import android.media.MediaRoute2ProviderService; |
| import android.media.RouteDiscoveryPreference; |
| import android.media.RoutingSessionInfo; |
| import android.os.Bundle; |
| import android.os.Handler; |
| import android.os.Looper; |
| import android.os.RemoteException; |
| import android.os.ServiceManager; |
| import android.text.TextUtils; |
| import android.util.Log; |
| |
| import com.android.internal.R; |
| import com.android.internal.annotations.GuardedBy; |
| |
| import java.util.Objects; |
| |
| /** |
| * Provides routes for local playbacks such as phone speaker, wired headset, or Bluetooth speakers. |
| */ |
| // TODO: check thread safety. We may need to use lock to protect variables. |
| class SystemMediaRoute2Provider extends MediaRoute2Provider { |
| private static final String TAG = "MR2SystemProvider"; |
| private static final boolean DEBUG = Log.isLoggable(TAG, Log.DEBUG); |
| |
| static final String DEFAULT_ROUTE_ID = "DEFAULT_ROUTE"; |
| static final String DEVICE_ROUTE_ID = "DEVICE_ROUTE"; |
| static final String SYSTEM_SESSION_ID = "SYSTEM_SESSION"; |
| |
| private final AudioManager mAudioManager; |
| private final IAudioService mAudioService; |
| private final Handler mHandler; |
| private final Context mContext; |
| private final BluetoothRouteProvider mBtRouteProvider; |
| |
| private static ComponentName sComponentName = new ComponentName( |
| SystemMediaRoute2Provider.class.getPackage().getName(), |
| SystemMediaRoute2Provider.class.getName()); |
| |
| private String mSelectedRouteId; |
| // For apps without MODIFYING_AUDIO_ROUTING permission. |
| // This should be the currently selected route. |
| MediaRoute2Info mDefaultRoute; |
| MediaRoute2Info mDeviceRoute; |
| RoutingSessionInfo mDefaultSessionInfo; |
| final AudioRoutesInfo mCurAudioRoutesInfo = new AudioRoutesInfo(); |
| int mDeviceVolume; |
| |
| private final Object mRequestLock = new Object(); |
| @GuardedBy("mRequestLock") |
| private volatile SessionCreationRequest mPendingSessionCreationRequest; |
| |
| final IAudioRoutesObserver.Stub mAudioRoutesObserver = new IAudioRoutesObserver.Stub() { |
| @Override |
| public void dispatchAudioRoutesChanged(final AudioRoutesInfo newRoutes) { |
| mHandler.post(() -> { |
| updateDeviceRoute(newRoutes); |
| notifyProviderState(); |
| }); |
| } |
| }; |
| |
| SystemMediaRoute2Provider(Context context, Callback callback) { |
| super(sComponentName); |
| setCallback(callback); |
| |
| mIsSystemRouteProvider = true; |
| |
| mContext = context; |
| mHandler = new Handler(Looper.getMainLooper()); |
| |
| mAudioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE); |
| mAudioService = IAudioService.Stub.asInterface( |
| ServiceManager.getService(Context.AUDIO_SERVICE)); |
| AudioRoutesInfo newAudioRoutes = null; |
| try { |
| newAudioRoutes = mAudioService.startWatchingRoutes(mAudioRoutesObserver); |
| } catch (RemoteException e) { |
| } |
| updateDeviceRoute(newAudioRoutes); |
| |
| // .getInstance returns null if there is no bt adapter available |
| mBtRouteProvider = BluetoothRouteProvider.getInstance(context, (routes) -> { |
| publishProviderState(); |
| |
| boolean sessionInfoChanged; |
| sessionInfoChanged = updateSessionInfosIfNeeded(); |
| if (sessionInfoChanged) { |
| notifySessionInfoUpdated(); |
| } |
| }); |
| updateSessionInfosIfNeeded(); |
| |
| IntentFilter intentFilter = new IntentFilter(AudioManager.VOLUME_CHANGED_ACTION); |
| intentFilter.addAction(AudioManager.STREAM_DEVICES_CHANGED_ACTION); |
| mContext.registerReceiver(new AudioManagerBroadcastReceiver(), intentFilter); |
| |
| if (mBtRouteProvider != null) { |
| mHandler.post(() -> { |
| mBtRouteProvider.start(); |
| notifyProviderState(); |
| }); |
| } |
| updateVolume(); |
| } |
| |
| @Override |
| public void requestCreateSession(long requestId, String packageName, String routeId, |
| Bundle sessionHints) { |
| // Assume a router without MODIFY_AUDIO_ROUTING permission can't request with |
| // a route ID different from the default route ID. The service should've filtered. |
| if (TextUtils.equals(routeId, DEFAULT_ROUTE_ID)) { |
| mCallback.onSessionCreated(this, requestId, mDefaultSessionInfo); |
| return; |
| } |
| if (TextUtils.equals(routeId, mSelectedRouteId)) { |
| mCallback.onSessionCreated(this, requestId, mSessionInfos.get(0)); |
| return; |
| } |
| |
| synchronized (mRequestLock) { |
| // Handle the previous request as a failure if exists. |
| if (mPendingSessionCreationRequest != null) { |
| mCallback.onRequestFailed(this, mPendingSessionCreationRequest.mRequestId, |
| MediaRoute2ProviderService.REASON_UNKNOWN_ERROR); |
| } |
| mPendingSessionCreationRequest = new SessionCreationRequest(requestId, routeId); |
| } |
| |
| transferToRoute(requestId, SYSTEM_SESSION_ID, routeId); |
| } |
| |
| @Override |
| public void releaseSession(long requestId, String sessionId) { |
| // Do nothing |
| } |
| |
| @Override |
| public void updateDiscoveryPreference(RouteDiscoveryPreference discoveryPreference) { |
| // Do nothing |
| } |
| |
| @Override |
| public void selectRoute(long requestId, String sessionId, String routeId) { |
| // Do nothing since we don't support multiple BT yet. |
| } |
| |
| @Override |
| public void deselectRoute(long requestId, String sessionId, String routeId) { |
| // Do nothing since we don't support multiple BT yet. |
| } |
| |
| @Override |
| public void transferToRoute(long requestId, String sessionId, String routeId) { |
| if (TextUtils.equals(routeId, DEFAULT_ROUTE_ID)) { |
| // The currently selected route is the default route. |
| return; |
| } |
| if (mBtRouteProvider != null) { |
| if (TextUtils.equals(routeId, mDeviceRoute.getId())) { |
| mBtRouteProvider.transferTo(null); |
| } else { |
| mBtRouteProvider.transferTo(routeId); |
| } |
| } |
| } |
| |
| @Override |
| public void setRouteVolume(long requestId, String routeId, int volume) { |
| if (!TextUtils.equals(routeId, mSelectedRouteId)) { |
| return; |
| } |
| mAudioManager.setStreamVolume(AudioManager.STREAM_MUSIC, volume, 0); |
| } |
| |
| @Override |
| public void setSessionVolume(long requestId, String sessionId, int volume) { |
| // Do nothing since we don't support grouping volume yet. |
| } |
| |
| public MediaRoute2Info getDefaultRoute() { |
| return mDefaultRoute; |
| } |
| |
| public RoutingSessionInfo getDefaultSessionInfo() { |
| return mDefaultSessionInfo; |
| } |
| |
| private void updateDeviceRoute(AudioRoutesInfo newRoutes) { |
| int name = R.string.default_audio_route_name; |
| int type = TYPE_BUILTIN_SPEAKER; |
| if (newRoutes != null) { |
| mCurAudioRoutesInfo.mainType = newRoutes.mainType; |
| if ((newRoutes.mainType & AudioRoutesInfo.MAIN_HEADPHONES) != 0) { |
| type = TYPE_WIRED_HEADPHONES; |
| name = com.android.internal.R.string.default_audio_route_name_headphones; |
| } else if ((newRoutes.mainType & AudioRoutesInfo.MAIN_HEADSET) != 0) { |
| type = TYPE_WIRED_HEADSET; |
| name = com.android.internal.R.string.default_audio_route_name_headphones; |
| } else if ((newRoutes.mainType & AudioRoutesInfo.MAIN_DOCK_SPEAKERS) != 0) { |
| type = TYPE_DOCK; |
| name = com.android.internal.R.string.default_audio_route_name_dock_speakers; |
| } else if ((newRoutes.mainType & AudioRoutesInfo.MAIN_HDMI) != 0) { |
| type = TYPE_HDMI; |
| name = com.android.internal.R.string.default_audio_route_name_hdmi; |
| } else if ((newRoutes.mainType & AudioRoutesInfo.MAIN_USB) != 0) { |
| type = TYPE_USB_DEVICE; |
| name = com.android.internal.R.string.default_audio_route_name_usb; |
| } |
| } |
| |
| mDeviceRoute = new MediaRoute2Info.Builder( |
| DEVICE_ROUTE_ID, mContext.getResources().getText(name).toString()) |
| .setVolumeHandling(mAudioManager.isVolumeFixed() |
| ? MediaRoute2Info.PLAYBACK_VOLUME_FIXED |
| : MediaRoute2Info.PLAYBACK_VOLUME_VARIABLE) |
| .setVolume(mDeviceVolume) |
| .setVolumeMax(mAudioManager.getStreamMaxVolume(AudioManager.STREAM_MUSIC)) |
| .setType(type) |
| .addFeature(FEATURE_LIVE_AUDIO) |
| .addFeature(FEATURE_LIVE_VIDEO) |
| .setConnectionState(MediaRoute2Info.CONNECTION_STATE_CONNECTED) |
| .build(); |
| updateProviderState(); |
| } |
| |
| private void updateProviderState() { |
| MediaRoute2ProviderInfo.Builder builder = new MediaRoute2ProviderInfo.Builder(); |
| builder.addRoute(mDeviceRoute); |
| if (mBtRouteProvider != null) { |
| for (MediaRoute2Info route : mBtRouteProvider.getAllBluetoothRoutes()) { |
| builder.addRoute(route); |
| } |
| } |
| setProviderState(builder.build()); |
| } |
| |
| /** |
| * Updates the mSessionInfo. Returns true if the session info is changed. |
| */ |
| boolean updateSessionInfosIfNeeded() { |
| synchronized (mLock) { |
| RoutingSessionInfo oldSessionInfo = mSessionInfos.isEmpty() ? null : mSessionInfos.get( |
| 0); |
| |
| RoutingSessionInfo.Builder builder = new RoutingSessionInfo.Builder( |
| SYSTEM_SESSION_ID, "" /* clientPackageName */) |
| .setSystemSession(true); |
| |
| MediaRoute2Info selectedRoute = mDeviceRoute; |
| if (mBtRouteProvider != null) { |
| MediaRoute2Info selectedBtRoute = mBtRouteProvider.getSelectedRoute(); |
| if (selectedBtRoute != null) { |
| selectedRoute = selectedBtRoute; |
| builder.addTransferableRoute(mDeviceRoute.getId()); |
| } |
| } |
| mSelectedRouteId = selectedRoute.getId(); |
| mDefaultRoute = new MediaRoute2Info.Builder(DEFAULT_ROUTE_ID, selectedRoute) |
| .setSystemRoute(true) |
| .setProviderId(mUniqueId) |
| .build(); |
| builder.addSelectedRoute(mSelectedRouteId); |
| |
| if (mBtRouteProvider != null) { |
| for (MediaRoute2Info route : mBtRouteProvider.getTransferableRoutes()) { |
| builder.addTransferableRoute(route.getId()); |
| } |
| } |
| |
| RoutingSessionInfo newSessionInfo = builder.setProviderId(mUniqueId).build(); |
| |
| if (mPendingSessionCreationRequest != null) { |
| SessionCreationRequest sessionCreationRequest; |
| synchronized (mRequestLock) { |
| sessionCreationRequest = mPendingSessionCreationRequest; |
| mPendingSessionCreationRequest = null; |
| } |
| if (sessionCreationRequest != null) { |
| if (TextUtils.equals(mSelectedRouteId, sessionCreationRequest.mRouteId)) { |
| mCallback.onSessionCreated(this, |
| sessionCreationRequest.mRequestId, newSessionInfo); |
| } else { |
| mCallback.onRequestFailed(this, sessionCreationRequest.mRequestId, |
| MediaRoute2ProviderService.REASON_UNKNOWN_ERROR); |
| } |
| } |
| } |
| |
| if (Objects.equals(oldSessionInfo, newSessionInfo)) { |
| return false; |
| } else { |
| mSessionInfos.clear(); |
| mSessionInfos.add(newSessionInfo); |
| mDefaultSessionInfo = new RoutingSessionInfo.Builder( |
| SYSTEM_SESSION_ID, "" /* clientPackageName */) |
| .setProviderId(mUniqueId) |
| .setSystemSession(true) |
| .addSelectedRoute(DEFAULT_ROUTE_ID) |
| .build(); |
| return true; |
| } |
| } |
| } |
| |
| void publishProviderState() { |
| updateProviderState(); |
| notifyProviderState(); |
| } |
| |
| void notifySessionInfoUpdated() { |
| RoutingSessionInfo sessionInfo; |
| synchronized (mLock) { |
| sessionInfo = mSessionInfos.get(0); |
| } |
| |
| mCallback.onSessionUpdated(this, sessionInfo); |
| } |
| |
| private static class SessionCreationRequest { |
| final long mRequestId; |
| final String mRouteId; |
| |
| SessionCreationRequest(long requestId, String routeId) { |
| this.mRequestId = requestId; |
| this.mRouteId = routeId; |
| } |
| } |
| |
| void updateVolume() { |
| int devices = mAudioManager.getDevicesForStream(AudioManager.STREAM_MUSIC); |
| int volume = mAudioManager.getStreamVolume(AudioManager.STREAM_MUSIC); |
| |
| if (mDefaultRoute.getVolume() != volume) { |
| mDefaultRoute = new MediaRoute2Info.Builder(mDefaultRoute) |
| .setVolume(volume) |
| .build(); |
| } |
| |
| if (mBtRouteProvider != null && mBtRouteProvider.updateVolumeForDevices(devices, volume)) { |
| return; |
| } |
| if (mDeviceVolume != volume) { |
| mDeviceVolume = volume; |
| mDeviceRoute = new MediaRoute2Info.Builder(mDeviceRoute) |
| .setVolume(volume) |
| .build(); |
| } |
| publishProviderState(); |
| } |
| |
| private class AudioManagerBroadcastReceiver extends BroadcastReceiver { |
| // This will be called in the main thread. |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| if (!intent.getAction().equals(AudioManager.VOLUME_CHANGED_ACTION) |
| && !intent.getAction().equals(AudioManager.STREAM_DEVICES_CHANGED_ACTION)) { |
| return; |
| } |
| |
| int streamType = intent.getIntExtra(AudioManager.EXTRA_VOLUME_STREAM_TYPE, -1); |
| if (streamType != AudioManager.STREAM_MUSIC) { |
| return; |
| } |
| |
| updateVolume(); |
| } |
| } |
| } |