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A library jar that provides APIs for Applications written for the Google Android Platform.
/*
* Copyright (C) 2012 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 android.media;
import android.Manifest;
import android.app.ActivityThread;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.pm.PackageManager;
import android.content.res.Resources;
import android.graphics.drawable.Drawable;
import android.hardware.display.DisplayManager;
import android.hardware.display.WifiDisplay;
import android.hardware.display.WifiDisplayStatus;
import android.media.session.MediaSession;
import android.os.Handler;
import android.os.IBinder;
import android.os.Process;
import android.os.RemoteException;
import android.os.ServiceManager;
import android.os.UserHandle;
import android.text.TextUtils;
import android.util.Log;
import android.view.Display;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Objects;
import java.util.concurrent.CopyOnWriteArrayList;
/**
* MediaRouter allows applications to control the routing of media channels
* and streams from the current device to external speakers and destination devices.
*
* A MediaRouter is retrieved through {@link Context#getSystemService(String)
* Context.getSystemService()} of a {@link Context#MEDIA_ROUTER_SERVICE
* Context.MEDIA_ROUTER_SERVICE}.
*
*
The media router API is not thread-safe; all interactions with it must be
* done from the main thread of the process.
*/
public class MediaRouter {
private static final String TAG = "MediaRouter";
private static final boolean DEBUG = Log.isLoggable(TAG, Log.DEBUG);
static class Static implements DisplayManager.DisplayListener {
final Context mAppContext;
final Resources mResources;
final IAudioService mAudioService;
final DisplayManager mDisplayService;
final IMediaRouterService mMediaRouterService;
final Handler mHandler;
final CopyOnWriteArrayList mCallbacks =
new CopyOnWriteArrayList();
final ArrayList mRoutes = new ArrayList();
final ArrayList mCategories = new ArrayList();
final RouteCategory mSystemCategory;
final AudioRoutesInfo mCurAudioRoutesInfo = new AudioRoutesInfo();
RouteInfo mDefaultAudioVideo;
RouteInfo mBluetoothA2dpRoute;
RouteInfo mSelectedRoute;
final boolean mCanConfigureWifiDisplays;
boolean mActivelyScanningWifiDisplays;
String mPreviousActiveWifiDisplayAddress;
int mDiscoveryRequestRouteTypes;
boolean mDiscoverRequestActiveScan;
int mCurrentUserId = -1;
IMediaRouterClient mClient;
MediaRouterClientState mClientState;
final IAudioRoutesObserver.Stub mAudioRoutesObserver = new IAudioRoutesObserver.Stub() {
@Override
public void dispatchAudioRoutesChanged(final AudioRoutesInfo newRoutes) {
mHandler.post(new Runnable() {
@Override public void run() {
updateAudioRoutes(newRoutes);
}
});
}
};
Static(Context appContext) {
mAppContext = appContext;
mResources = Resources.getSystem();
mHandler = new Handler(appContext.getMainLooper());
IBinder b = ServiceManager.getService(Context.AUDIO_SERVICE);
mAudioService = IAudioService.Stub.asInterface(b);
mDisplayService = (DisplayManager) appContext.getSystemService(Context.DISPLAY_SERVICE);
mMediaRouterService = IMediaRouterService.Stub.asInterface(
ServiceManager.getService(Context.MEDIA_ROUTER_SERVICE));
mSystemCategory = new RouteCategory(
com.android.internal.R.string.default_audio_route_category_name,
ROUTE_TYPE_LIVE_AUDIO | ROUTE_TYPE_LIVE_VIDEO, false);
mSystemCategory.mIsSystem = true;
// Only the system can configure wifi displays. The display manager
// enforces this with a permission check. Set a flag here so that we
// know whether this process is actually allowed to scan and connect.
mCanConfigureWifiDisplays = appContext.checkPermission(
Manifest.permission.CONFIGURE_WIFI_DISPLAY,
Process.myPid(), Process.myUid()) == PackageManager.PERMISSION_GRANTED;
}
// Called after sStatic is initialized
void startMonitoringRoutes(Context appContext) {
mDefaultAudioVideo = new RouteInfo(mSystemCategory);
mDefaultAudioVideo.mNameResId = com.android.internal.R.string.default_audio_route_name;
mDefaultAudioVideo.mSupportedTypes = ROUTE_TYPE_LIVE_AUDIO | ROUTE_TYPE_LIVE_VIDEO;
mDefaultAudioVideo.updatePresentationDisplay();
addRouteStatic(mDefaultAudioVideo);
// This will select the active wifi display route if there is one.
updateWifiDisplayStatus(mDisplayService.getWifiDisplayStatus());
appContext.registerReceiver(new WifiDisplayStatusChangedReceiver(),
new IntentFilter(DisplayManager.ACTION_WIFI_DISPLAY_STATUS_CHANGED));
appContext.registerReceiver(new VolumeChangeReceiver(),
new IntentFilter(AudioManager.VOLUME_CHANGED_ACTION));
mDisplayService.registerDisplayListener(this, mHandler);
AudioRoutesInfo newAudioRoutes = null;
try {
newAudioRoutes = mAudioService.startWatchingRoutes(mAudioRoutesObserver);
} catch (RemoteException e) {
}
if (newAudioRoutes != null) {
// This will select the active BT route if there is one and the current
// selected route is the default system route, or if there is no selected
// route yet.
updateAudioRoutes(newAudioRoutes);
}
// Bind to the media router service.
rebindAsUser(UserHandle.myUserId());
// Select the default route if the above didn't sync us up
// appropriately with relevant system state.
if (mSelectedRoute == null) {
selectDefaultRouteStatic();
}
}
void updateAudioRoutes(AudioRoutesInfo newRoutes) {
if (newRoutes.mMainType != mCurAudioRoutesInfo.mMainType) {
mCurAudioRoutesInfo.mMainType = newRoutes.mMainType;
int name;
if ((newRoutes.mMainType&AudioRoutesInfo.MAIN_HEADPHONES) != 0
|| (newRoutes.mMainType&AudioRoutesInfo.MAIN_HEADSET) != 0) {
name = com.android.internal.R.string.default_audio_route_name_headphones;
} else if ((newRoutes.mMainType&AudioRoutesInfo.MAIN_DOCK_SPEAKERS) != 0) {
name = com.android.internal.R.string.default_audio_route_name_dock_speakers;
} else if ((newRoutes.mMainType&AudioRoutesInfo.MAIN_HDMI) != 0) {
name = com.android.internal.R.string.default_media_route_name_hdmi;
} else {
name = com.android.internal.R.string.default_audio_route_name;
}
sStatic.mDefaultAudioVideo.mNameResId = name;
dispatchRouteChanged(sStatic.mDefaultAudioVideo);
}
final int mainType = mCurAudioRoutesInfo.mMainType;
if (!TextUtils.equals(newRoutes.mBluetoothName, mCurAudioRoutesInfo.mBluetoothName)) {
mCurAudioRoutesInfo.mBluetoothName = newRoutes.mBluetoothName;
if (mCurAudioRoutesInfo.mBluetoothName != null) {
if (sStatic.mBluetoothA2dpRoute == null) {
final RouteInfo info = new RouteInfo(sStatic.mSystemCategory);
info.mName = mCurAudioRoutesInfo.mBluetoothName;
info.mDescription = sStatic.mResources.getText(
com.android.internal.R.string.bluetooth_a2dp_audio_route_name);
info.mSupportedTypes = ROUTE_TYPE_LIVE_AUDIO;
sStatic.mBluetoothA2dpRoute = info;
addRouteStatic(sStatic.mBluetoothA2dpRoute);
} else {
sStatic.mBluetoothA2dpRoute.mName = mCurAudioRoutesInfo.mBluetoothName;
dispatchRouteChanged(sStatic.mBluetoothA2dpRoute);
}
} else if (sStatic.mBluetoothA2dpRoute != null) {
removeRouteStatic(sStatic.mBluetoothA2dpRoute);
sStatic.mBluetoothA2dpRoute = null;
}
}
if (mBluetoothA2dpRoute != null) {
final boolean a2dpEnabled = isBluetoothA2dpOn();
if (mainType != AudioRoutesInfo.MAIN_SPEAKER &&
mSelectedRoute == mBluetoothA2dpRoute && !a2dpEnabled) {
selectRouteStatic(ROUTE_TYPE_LIVE_AUDIO, mDefaultAudioVideo, false);
} else if ((mSelectedRoute == mDefaultAudioVideo || mSelectedRoute == null) &&
a2dpEnabled) {
selectRouteStatic(ROUTE_TYPE_LIVE_AUDIO, mBluetoothA2dpRoute, false);
}
}
}
boolean isBluetoothA2dpOn() {
try {
return mAudioService.isBluetoothA2dpOn();
} catch (RemoteException e) {
Log.e(TAG, "Error querying Bluetooth A2DP state", e);
return false;
}
}
void updateDiscoveryRequest() {
// What are we looking for today?
int routeTypes = 0;
int passiveRouteTypes = 0;
boolean activeScan = false;
boolean activeScanWifiDisplay = false;
final int count = mCallbacks.size();
for (int i = 0; i < count; i++) {
CallbackInfo cbi = mCallbacks.get(i);
if ((cbi.flags & (CALLBACK_FLAG_PERFORM_ACTIVE_SCAN
| CALLBACK_FLAG_REQUEST_DISCOVERY)) != 0) {
// Discovery explicitly requested.
routeTypes |= cbi.type;
} else if ((cbi.flags & CALLBACK_FLAG_PASSIVE_DISCOVERY) != 0) {
// Discovery only passively requested.
passiveRouteTypes |= cbi.type;
} else {
// Legacy case since applications don't specify the discovery flag.
// Unfortunately we just have to assume they always need discovery
// whenever they have a callback registered.
routeTypes |= cbi.type;
}
if ((cbi.flags & CALLBACK_FLAG_PERFORM_ACTIVE_SCAN) != 0) {
activeScan = true;
if ((cbi.type & ROUTE_TYPE_REMOTE_DISPLAY) != 0) {
activeScanWifiDisplay = true;
}
}
}
if (routeTypes != 0 || activeScan) {
// If someone else requests discovery then enable the passive listeners.
// This is used by the MediaRouteButton and MediaRouteActionProvider since
// they don't receive lifecycle callbacks from the Activity.
routeTypes |= passiveRouteTypes;
}
// Update wifi display scanning.
// TODO: All of this should be managed by the media router service.
if (mCanConfigureWifiDisplays) {
if (mSelectedRoute != null
&& mSelectedRoute.matchesTypes(ROUTE_TYPE_REMOTE_DISPLAY)) {
// Don't scan while already connected to a remote display since
// it may interfere with the ongoing transmission.
activeScanWifiDisplay = false;
}
if (activeScanWifiDisplay) {
if (!mActivelyScanningWifiDisplays) {
mActivelyScanningWifiDisplays = true;
mDisplayService.startWifiDisplayScan();
}
} else {
if (mActivelyScanningWifiDisplays) {
mActivelyScanningWifiDisplays = false;
mDisplayService.stopWifiDisplayScan();
}
}
}
// Tell the media router service all about it.
if (routeTypes != mDiscoveryRequestRouteTypes
|| activeScan != mDiscoverRequestActiveScan) {
mDiscoveryRequestRouteTypes = routeTypes;
mDiscoverRequestActiveScan = activeScan;
publishClientDiscoveryRequest();
}
}
@Override
public void onDisplayAdded(int displayId) {
updatePresentationDisplays(displayId);
}
@Override
public void onDisplayChanged(int displayId) {
updatePresentationDisplays(displayId);
}
@Override
public void onDisplayRemoved(int displayId) {
updatePresentationDisplays(displayId);
}
public Display[] getAllPresentationDisplays() {
return mDisplayService.getDisplays(DisplayManager.DISPLAY_CATEGORY_PRESENTATION);
}
private void updatePresentationDisplays(int changedDisplayId) {
final int count = mRoutes.size();
for (int i = 0; i < count; i++) {
final RouteInfo route = mRoutes.get(i);
if (route.updatePresentationDisplay() || (route.mPresentationDisplay != null
&& route.mPresentationDisplay.getDisplayId() == changedDisplayId)) {
dispatchRoutePresentationDisplayChanged(route);
}
}
}
void setSelectedRoute(RouteInfo info, boolean explicit) {
// Must be non-reentrant.
mSelectedRoute = info;
publishClientSelectedRoute(explicit);
}
void rebindAsUser(int userId) {
if (mCurrentUserId != userId || userId < 0 || mClient == null) {
if (mClient != null) {
try {
mMediaRouterService.unregisterClient(mClient);
} catch (RemoteException ex) {
Log.e(TAG, "Unable to unregister media router client.", ex);
}
mClient = null;
}
mCurrentUserId = userId;
try {
Client client = new Client();
mMediaRouterService.registerClientAsUser(client,
mAppContext.getPackageName(), userId);
mClient = client;
} catch (RemoteException ex) {
Log.e(TAG, "Unable to register media router client.", ex);
}
publishClientDiscoveryRequest();
publishClientSelectedRoute(false);
updateClientState();
}
}
void publishClientDiscoveryRequest() {
if (mClient != null) {
try {
mMediaRouterService.setDiscoveryRequest(mClient,
mDiscoveryRequestRouteTypes, mDiscoverRequestActiveScan);
} catch (RemoteException ex) {
Log.e(TAG, "Unable to publish media router client discovery request.", ex);
}
}
}
void publishClientSelectedRoute(boolean explicit) {
if (mClient != null) {
try {
mMediaRouterService.setSelectedRoute(mClient,
mSelectedRoute != null ? mSelectedRoute.mGlobalRouteId : null,
explicit);
} catch (RemoteException ex) {
Log.e(TAG, "Unable to publish media router client selected route.", ex);
}
}
}
void updateClientState() {
// Update the client state.
mClientState = null;
if (mClient != null) {
try {
mClientState = mMediaRouterService.getState(mClient);
} catch (RemoteException ex) {
Log.e(TAG, "Unable to retrieve media router client state.", ex);
}
}
final ArrayList globalRoutes =
mClientState != null ? mClientState.routes : null;
final String globallySelectedRouteId = mClientState != null ?
mClientState.globallySelectedRouteId : null;
// Add or update routes.
final int globalRouteCount = globalRoutes != null ? globalRoutes.size() : 0;
for (int i = 0; i < globalRouteCount; i++) {
final MediaRouterClientState.RouteInfo globalRoute = globalRoutes.get(i);
RouteInfo route = findGlobalRoute(globalRoute.id);
if (route == null) {
route = makeGlobalRoute(globalRoute);
addRouteStatic(route);
} else {
updateGlobalRoute(route, globalRoute);
}
}
// Synchronize state with the globally selected route.
if (globallySelectedRouteId != null) {
final RouteInfo route = findGlobalRoute(globallySelectedRouteId);
if (route == null) {
Log.w(TAG, "Could not find new globally selected route: "
+ globallySelectedRouteId);
} else if (route != mSelectedRoute) {
if (DEBUG) {
Log.d(TAG, "Selecting new globally selected route: " + route);
}
selectRouteStatic(route.mSupportedTypes, route, false);
}
} else if (mSelectedRoute != null && mSelectedRoute.mGlobalRouteId != null) {
if (DEBUG) {
Log.d(TAG, "Unselecting previous globally selected route: " + mSelectedRoute);
}
selectDefaultRouteStatic();
}
// Remove defunct routes.
outer: for (int i = mRoutes.size(); i-- > 0; ) {
final RouteInfo route = mRoutes.get(i);
final String globalRouteId = route.mGlobalRouteId;
if (globalRouteId != null) {
for (int j = 0; j < globalRouteCount; j++) {
MediaRouterClientState.RouteInfo globalRoute = globalRoutes.get(j);
if (globalRouteId.equals(globalRoute.id)) {
continue outer; // found
}
}
// not found
removeRouteStatic(route);
}
}
}
void requestSetVolume(RouteInfo route, int volume) {
if (route.mGlobalRouteId != null && mClient != null) {
try {
mMediaRouterService.requestSetVolume(mClient,
route.mGlobalRouteId, volume);
} catch (RemoteException ex) {
Log.w(TAG, "Unable to request volume change.", ex);
}
}
}
void requestUpdateVolume(RouteInfo route, int direction) {
if (route.mGlobalRouteId != null && mClient != null) {
try {
mMediaRouterService.requestUpdateVolume(mClient,
route.mGlobalRouteId, direction);
} catch (RemoteException ex) {
Log.w(TAG, "Unable to request volume change.", ex);
}
}
}
RouteInfo makeGlobalRoute(MediaRouterClientState.RouteInfo globalRoute) {
RouteInfo route = new RouteInfo(sStatic.mSystemCategory);
route.mGlobalRouteId = globalRoute.id;
route.mName = globalRoute.name;
route.mDescription = globalRoute.description;
route.mSupportedTypes = globalRoute.supportedTypes;
route.mEnabled = globalRoute.enabled;
route.setRealStatusCode(globalRoute.statusCode);
route.mPlaybackType = globalRoute.playbackType;
route.mPlaybackStream = globalRoute.playbackStream;
route.mVolume = globalRoute.volume;
route.mVolumeMax = globalRoute.volumeMax;
route.mVolumeHandling = globalRoute.volumeHandling;
route.mPresentationDisplayId = globalRoute.presentationDisplayId;
route.updatePresentationDisplay();
return route;
}
void updateGlobalRoute(RouteInfo route, MediaRouterClientState.RouteInfo globalRoute) {
boolean changed = false;
boolean volumeChanged = false;
boolean presentationDisplayChanged = false;
if (!Objects.equals(route.mName, globalRoute.name)) {
route.mName = globalRoute.name;
changed = true;
}
if (!Objects.equals(route.mDescription, globalRoute.description)) {
route.mDescription = globalRoute.description;
changed = true;
}
final int oldSupportedTypes = route.mSupportedTypes;
if (oldSupportedTypes != globalRoute.supportedTypes) {
route.mSupportedTypes = globalRoute.supportedTypes;
changed = true;
}
if (route.mEnabled != globalRoute.enabled) {
route.mEnabled = globalRoute.enabled;
changed = true;
}
if (route.mRealStatusCode != globalRoute.statusCode) {
route.setRealStatusCode(globalRoute.statusCode);
changed = true;
}
if (route.mPlaybackType != globalRoute.playbackType) {
route.mPlaybackType = globalRoute.playbackType;
changed = true;
}
if (route.mPlaybackStream != globalRoute.playbackStream) {
route.mPlaybackStream = globalRoute.playbackStream;
changed = true;
}
if (route.mVolume != globalRoute.volume) {
route.mVolume = globalRoute.volume;
changed = true;
volumeChanged = true;
}
if (route.mVolumeMax != globalRoute.volumeMax) {
route.mVolumeMax = globalRoute.volumeMax;
changed = true;
volumeChanged = true;
}
if (route.mVolumeHandling != globalRoute.volumeHandling) {
route.mVolumeHandling = globalRoute.volumeHandling;
changed = true;
volumeChanged = true;
}
if (route.mPresentationDisplayId != globalRoute.presentationDisplayId) {
route.mPresentationDisplayId = globalRoute.presentationDisplayId;
route.updatePresentationDisplay();
changed = true;
presentationDisplayChanged = true;
}
if (changed) {
dispatchRouteChanged(route, oldSupportedTypes);
}
if (volumeChanged) {
dispatchRouteVolumeChanged(route);
}
if (presentationDisplayChanged) {
dispatchRoutePresentationDisplayChanged(route);
}
}
RouteInfo findGlobalRoute(String globalRouteId) {
final int count = mRoutes.size();
for (int i = 0; i < count; i++) {
final RouteInfo route = mRoutes.get(i);
if (globalRouteId.equals(route.mGlobalRouteId)) {
return route;
}
}
return null;
}
final class Client extends IMediaRouterClient.Stub {
@Override
public void onStateChanged() {
mHandler.post(new Runnable() {
@Override
public void run() {
if (Client.this == mClient) {
updateClientState();
}
}
});
}
}
}
static Static sStatic;
/**
* Route type flag for live audio.
*
* A device that supports live audio routing will allow the media audio stream
* to be routed to supported destinations. This can include internal speakers or
* audio jacks on the device itself, A2DP devices, and more.
*
* Once initiated this routing is transparent to the application. All audio
* played on the media stream will be routed to the selected destination.
*/
public static final int ROUTE_TYPE_LIVE_AUDIO = 1 << 0;
/**
* Route type flag for live video.
*
* A device that supports live video routing will allow a mirrored version
* of the device's primary display or a customized
* {@link android.app.Presentation Presentation} to be routed to supported destinations.
*
* Once initiated, display mirroring is transparent to the application.
* While remote routing is active the application may use a
* {@link android.app.Presentation Presentation} to replace the mirrored view
* on the external display with different content.
*
* @see RouteInfo#getPresentationDisplay()
* @see android.app.Presentation
*/
public static final int ROUTE_TYPE_LIVE_VIDEO = 1 << 1;
/**
* Temporary interop constant to identify remote displays.
* @hide To be removed when media router API is updated.
*/
public static final int ROUTE_TYPE_REMOTE_DISPLAY = 1 << 2;
/**
* Route type flag for application-specific usage.
*
* Unlike other media route types, user routes are managed by the application.
* The MediaRouter will manage and dispatch events for user routes, but the application
* is expected to interpret the meaning of these events and perform the requested
* routing tasks.
*/
public static final int ROUTE_TYPE_USER = 1 << 23;
static final int ROUTE_TYPE_ANY = ROUTE_TYPE_LIVE_AUDIO | ROUTE_TYPE_LIVE_VIDEO
| ROUTE_TYPE_REMOTE_DISPLAY | ROUTE_TYPE_USER;
/**
* Flag for {@link #addCallback}: Actively scan for routes while this callback
* is registered.
*
* When this flag is specified, the media router will actively scan for new
* routes. Certain routes, such as wifi display routes, may not be discoverable
* except when actively scanning. This flag is typically used when the route picker
* dialog has been opened by the user to ensure that the route information is
* up to date.
*
* Active scanning may consume a significant amount of power and may have intrusive
* effects on wireless connectivity. Therefore it is important that active scanning
* only be requested when it is actually needed to satisfy a user request to
* discover and select a new route.
*
*/
public static final int CALLBACK_FLAG_PERFORM_ACTIVE_SCAN = 1 << 0;
/**
* Flag for {@link #addCallback}: Do not filter route events.
*
* When this flag is specified, the callback will be invoked for event that affect any
* route even if they do not match the callback's filter.
*
*/
public static final int CALLBACK_FLAG_UNFILTERED_EVENTS = 1 << 1;
/**
* Explicitly requests discovery.
*
* @hide Future API ported from support library. Revisit this later.
*/
public static final int CALLBACK_FLAG_REQUEST_DISCOVERY = 1 << 2;
/**
* Requests that discovery be performed but only if there is some other active
* callback already registered.
*
* @hide Compatibility workaround for the fact that applications do not currently
* request discovery explicitly (except when using the support library API).
*/
public static final int CALLBACK_FLAG_PASSIVE_DISCOVERY = 1 << 3;
/**
* Flag for {@link #isRouteAvailable}: Ignore the default route.
*
* This flag is used to determine whether a matching non-default route is available.
* This constraint may be used to decide whether to offer the route chooser dialog
* to the user. There is no point offering the chooser if there are no
* non-default choices.
*
*
* @hide Future API ported from support library. Revisit this later.
*/
public static final int AVAILABILITY_FLAG_IGNORE_DEFAULT_ROUTE = 1 << 0;
// Maps application contexts
static final HashMap sRouters = new HashMap();
static String typesToString(int types) {
final StringBuilder result = new StringBuilder();
if ((types & ROUTE_TYPE_LIVE_AUDIO) != 0) {
result.append("ROUTE_TYPE_LIVE_AUDIO ");
}
if ((types & ROUTE_TYPE_LIVE_VIDEO) != 0) {
result.append("ROUTE_TYPE_LIVE_VIDEO ");
}
if ((types & ROUTE_TYPE_REMOTE_DISPLAY) != 0) {
result.append("ROUTE_TYPE_REMOTE_DISPLAY ");
}
if ((types & ROUTE_TYPE_USER) != 0) {
result.append("ROUTE_TYPE_USER ");
}
return result.toString();
}
/** @hide */
public MediaRouter(Context context) {
synchronized (Static.class) {
if (sStatic == null) {
final Context appContext = context.getApplicationContext();
sStatic = new Static(appContext);
sStatic.startMonitoringRoutes(appContext);
}
}
}
/**
* Gets the default route for playing media content on the system.
*
* The system always provides a default route.
*
*
* @return The default route, which is guaranteed to never be null.
*/
public RouteInfo getDefaultRoute() {
return sStatic.mDefaultAudioVideo;
}
/**
* @hide for use by framework routing UI
*/
public RouteCategory getSystemCategory() {
return sStatic.mSystemCategory;
}
/** @hide */
public RouteInfo getSelectedRoute() {
return getSelectedRoute(ROUTE_TYPE_ANY);
}
/**
* Return the currently selected route for any of the given types
*
* @param type route types
* @return the selected route
*/
public RouteInfo getSelectedRoute(int type) {
if (sStatic.mSelectedRoute != null &&
(sStatic.mSelectedRoute.mSupportedTypes & type) != 0) {
// If the selected route supports any of the types supplied, it's still considered
// 'selected' for that type.
return sStatic.mSelectedRoute;
} else if (type == ROUTE_TYPE_USER) {
// The caller specifically asked for a user route and the currently selected route
// doesn't qualify.
return null;
}
// If the above didn't match and we're not specifically asking for a user route,
// consider the default selected.
return sStatic.mDefaultAudioVideo;
}
/**
* Returns true if there is a route that matches the specified types.
*
* This method returns true if there are any available routes that match the types
* regardless of whether they are enabled or disabled. If the
* {@link #AVAILABILITY_FLAG_IGNORE_DEFAULT_ROUTE} flag is specified, then
* the method will only consider non-default routes.
*
*
* @param types The types to match.
* @param flags Flags to control the determination of whether a route may be available.
* May be zero or {@link #AVAILABILITY_FLAG_IGNORE_DEFAULT_ROUTE}.
* @return True if a matching route may be available.
*
* @hide Future API ported from support library. Revisit this later.
*/
public boolean isRouteAvailable(int types, int flags) {
final int count = sStatic.mRoutes.size();
for (int i = 0; i < count; i++) {
RouteInfo route = sStatic.mRoutes.get(i);
if (route.matchesTypes(types)) {
if ((flags & AVAILABILITY_FLAG_IGNORE_DEFAULT_ROUTE) == 0
|| route != sStatic.mDefaultAudioVideo) {
return true;
}
}
}
// It doesn't look like we can find a matching route right now.
return false;
}
/**
* Add a callback to listen to events about specific kinds of media routes.
* If the specified callback is already registered, its registration will be updated for any
* additional route types specified.
*
* This is a convenience method that has the same effect as calling
* {@link #addCallback(int, Callback, int)} without flags.
*
*
* @param types Types of routes this callback is interested in
* @param cb Callback to add
*/
public void addCallback(int types, Callback cb) {
addCallback(types, cb, 0);
}
/**
* Add a callback to listen to events about specific kinds of media routes.
* If the specified callback is already registered, its registration will be updated for any
* additional route types specified.
*
* By default, the callback will only be invoked for events that affect routes
* that match the specified selector. The filtering may be disabled by specifying
* the {@link #CALLBACK_FLAG_UNFILTERED_EVENTS} flag.
*
*
* @param types Types of routes this callback is interested in
* @param cb Callback to add
* @param flags Flags to control the behavior of the callback.
* May be zero or a combination of {@link #CALLBACK_FLAG_PERFORM_ACTIVE_SCAN} and
* {@link #CALLBACK_FLAG_UNFILTERED_EVENTS}.
*/
public void addCallback(int types, Callback cb, int flags) {
CallbackInfo info;
int index = findCallbackInfo(cb);
if (index >= 0) {
info = sStatic.mCallbacks.get(index);
info.type |= types;
info.flags |= flags;
} else {
info = new CallbackInfo(cb, types, flags, this);
sStatic.mCallbacks.add(info);
}
sStatic.updateDiscoveryRequest();
}
/**
* Remove the specified callback. It will no longer receive events about media routing.
*
* @param cb Callback to remove
*/
public void removeCallback(Callback cb) {
int index = findCallbackInfo(cb);
if (index >= 0) {
sStatic.mCallbacks.remove(index);
sStatic.updateDiscoveryRequest();
} else {
Log.w(TAG, "removeCallback(" + cb + "): callback not registered");
}
}
private int findCallbackInfo(Callback cb) {
final int count = sStatic.mCallbacks.size();
for (int i = 0; i < count; i++) {
final CallbackInfo info = sStatic.mCallbacks.get(i);
if (info.cb == cb) {
return i;
}
}
return -1;
}
/**
* Select the specified route to use for output of the given media types.
*
* As API version 18, this function may be used to select any route.
* In prior versions, this function could only be used to select user
* routes and would ignore any attempt to select a system route.
*
*
* @param types type flags indicating which types this route should be used for.
* The route must support at least a subset.
* @param route Route to select
*/
public void selectRoute(int types, RouteInfo route) {
selectRouteStatic(types, route, true);
}
/**
* @hide internal use
*/
public void selectRouteInt(int types, RouteInfo route, boolean explicit) {
selectRouteStatic(types, route, explicit);
}
static void selectRouteStatic(int types, RouteInfo route, boolean explicit) {
final RouteInfo oldRoute = sStatic.mSelectedRoute;
if (oldRoute == route) return;
if (!route.matchesTypes(types)) {
Log.w(TAG, "selectRoute ignored; cannot select route with supported types " +
typesToString(route.getSupportedTypes()) + " into route types " +
typesToString(types));
return;
}
final RouteInfo btRoute = sStatic.mBluetoothA2dpRoute;
if (btRoute != null && (types & ROUTE_TYPE_LIVE_AUDIO) != 0 &&
(route == btRoute || route == sStatic.mDefaultAudioVideo)) {
try {
sStatic.mAudioService.setBluetoothA2dpOn(route == btRoute);
} catch (RemoteException e) {
Log.e(TAG, "Error changing Bluetooth A2DP state", e);
}
}
final WifiDisplay activeDisplay =
sStatic.mDisplayService.getWifiDisplayStatus().getActiveDisplay();
final boolean oldRouteHasAddress = oldRoute != null && oldRoute.mDeviceAddress != null;
final boolean newRouteHasAddress = route != null && route.mDeviceAddress != null;
if (activeDisplay != null || oldRouteHasAddress || newRouteHasAddress) {
if (newRouteHasAddress && !matchesDeviceAddress(activeDisplay, route)) {
if (sStatic.mCanConfigureWifiDisplays) {
sStatic.mDisplayService.connectWifiDisplay(route.mDeviceAddress);
} else {
Log.e(TAG, "Cannot connect to wifi displays because this process "
+ "is not allowed to do so.");
}
} else if (activeDisplay != null && !newRouteHasAddress) {
sStatic.mDisplayService.disconnectWifiDisplay();
}
}
sStatic.setSelectedRoute(route, explicit);
if (oldRoute != null) {
dispatchRouteUnselected(types & oldRoute.getSupportedTypes(), oldRoute);
if (oldRoute.resolveStatusCode()) {
dispatchRouteChanged(oldRoute);
}
}
if (route != null) {
if (route.resolveStatusCode()) {
dispatchRouteChanged(route);
}
dispatchRouteSelected(types & route.getSupportedTypes(), route);
}
// The behavior of active scans may depend on the currently selected route.
sStatic.updateDiscoveryRequest();
}
static void selectDefaultRouteStatic() {
// TODO: Be smarter about the route types here; this selects for all valid.
if (sStatic.mSelectedRoute != sStatic.mBluetoothA2dpRoute
&& sStatic.mBluetoothA2dpRoute != null && sStatic.isBluetoothA2dpOn()) {
selectRouteStatic(ROUTE_TYPE_ANY, sStatic.mBluetoothA2dpRoute, false);
} else {
selectRouteStatic(ROUTE_TYPE_ANY, sStatic.mDefaultAudioVideo, false);
}
}
/**
* Compare the device address of a display and a route.
* Nulls/no device address will match another null/no address.
*/
static boolean matchesDeviceAddress(WifiDisplay display, RouteInfo info) {
final boolean routeHasAddress = info != null && info.mDeviceAddress != null;
if (display == null && !routeHasAddress) {
return true;
}
if (display != null && routeHasAddress) {
return display.getDeviceAddress().equals(info.mDeviceAddress);
}
return false;
}
/**
* Add an app-specified route for media to the MediaRouter.
* App-specified route definitions are created using {@link #createUserRoute(RouteCategory)}
*
* @param info Definition of the route to add
* @see #createUserRoute(RouteCategory)
* @see #removeUserRoute(UserRouteInfo)
*/
public void addUserRoute(UserRouteInfo info) {
addRouteStatic(info);
}
/**
* @hide Framework use only
*/
public void addRouteInt(RouteInfo info) {
addRouteStatic(info);
}
static void addRouteStatic(RouteInfo info) {
final RouteCategory cat = info.getCategory();
if (!sStatic.mCategories.contains(cat)) {
sStatic.mCategories.add(cat);
}
if (cat.isGroupable() && !(info instanceof RouteGroup)) {
// Enforce that any added route in a groupable category must be in a group.
final RouteGroup group = new RouteGroup(info.getCategory());
group.mSupportedTypes = info.mSupportedTypes;
sStatic.mRoutes.add(group);
dispatchRouteAdded(group);
group.addRoute(info);
info = group;
} else {
sStatic.mRoutes.add(info);
dispatchRouteAdded(info);
}
}
/**
* Remove an app-specified route for media from the MediaRouter.
*
* @param info Definition of the route to remove
* @see #addUserRoute(UserRouteInfo)
*/
public void removeUserRoute(UserRouteInfo info) {
removeRouteStatic(info);
}
/**
* Remove all app-specified routes from the MediaRouter.
*
* @see #removeUserRoute(UserRouteInfo)
*/
public void clearUserRoutes() {
for (int i = 0; i < sStatic.mRoutes.size(); i++) {
final RouteInfo info = sStatic.mRoutes.get(i);
// TODO Right now, RouteGroups only ever contain user routes.
// The code below will need to change if this assumption does.
if (info instanceof UserRouteInfo || info instanceof RouteGroup) {
removeRouteStatic(info);
i--;
}
}
}
/**
* @hide internal use only
*/
public void removeRouteInt(RouteInfo info) {
removeRouteStatic(info);
}
static void removeRouteStatic(RouteInfo info) {
if (sStatic.mRoutes.remove(info)) {
final RouteCategory removingCat = info.getCategory();
final int count = sStatic.mRoutes.size();
boolean found = false;
for (int i = 0; i < count; i++) {
final RouteCategory cat = sStatic.mRoutes.get(i).getCategory();
if (removingCat == cat) {
found = true;
break;
}
}
if (info.isSelected()) {
// Removing the currently selected route? Select the default before we remove it.
selectDefaultRouteStatic();
}
if (!found) {
sStatic.mCategories.remove(removingCat);
}
dispatchRouteRemoved(info);
}
}
/**
* Return the number of {@link MediaRouter.RouteCategory categories} currently
* represented by routes known to this MediaRouter.
*
* @return the number of unique categories represented by this MediaRouter's known routes
*/
public int getCategoryCount() {
return sStatic.mCategories.size();
}
/**
* Return the {@link MediaRouter.RouteCategory category} at the given index.
* Valid indices are in the range [0-getCategoryCount).
*
* @param index which category to return
* @return the category at index
*/
public RouteCategory getCategoryAt(int index) {
return sStatic.mCategories.get(index);
}
/**
* Return the number of {@link MediaRouter.RouteInfo routes} currently known
* to this MediaRouter.
*
* @return the number of routes tracked by this router
*/
public int getRouteCount() {
return sStatic.mRoutes.size();
}
/**
* Return the route at the specified index.
*
* @param index index of the route to return
* @return the route at index
*/
public RouteInfo getRouteAt(int index) {
return sStatic.mRoutes.get(index);
}
static int getRouteCountStatic() {
return sStatic.mRoutes.size();
}
static RouteInfo getRouteAtStatic(int index) {
return sStatic.mRoutes.get(index);
}
/**
* Create a new user route that may be modified and registered for use by the application.
*
* @param category The category the new route will belong to
* @return A new UserRouteInfo for use by the application
*
* @see #addUserRoute(UserRouteInfo)
* @see #removeUserRoute(UserRouteInfo)
* @see #createRouteCategory(CharSequence, boolean)
*/
public UserRouteInfo createUserRoute(RouteCategory category) {
return new UserRouteInfo(category);
}
/**
* Create a new route category. Each route must belong to a category.
*
* @param name Name of the new category
* @param isGroupable true if routes in this category may be grouped with one another
* @return the new RouteCategory
*/
public RouteCategory createRouteCategory(CharSequence name, boolean isGroupable) {
return new RouteCategory(name, ROUTE_TYPE_USER, isGroupable);
}
/**
* Create a new route category. Each route must belong to a category.
*
* @param nameResId Resource ID of the name of the new category
* @param isGroupable true if routes in this category may be grouped with one another
* @return the new RouteCategory
*/
public RouteCategory createRouteCategory(int nameResId, boolean isGroupable) {
return new RouteCategory(nameResId, ROUTE_TYPE_USER, isGroupable);
}
/**
* Rebinds the media router to handle routes that belong to the specified user.
* Requires the interact across users permission to access the routes of another user.
*
* This method is a complete hack to work around the singleton nature of the
* media router when running inside of singleton processes like QuickSettings.
* This mechanism should be burned to the ground when MediaRouter is redesigned.
* Ideally the current user would be pulled from the Context but we need to break
* down MediaRouter.Static before we can get there.
*
*
* @hide
*/
public void rebindAsUser(int userId) {
sStatic.rebindAsUser(userId);
}
static void updateRoute(final RouteInfo info) {
dispatchRouteChanged(info);
}
static void dispatchRouteSelected(int type, RouteInfo info) {
for (CallbackInfo cbi : sStatic.mCallbacks) {
if (cbi.filterRouteEvent(info)) {
cbi.cb.onRouteSelected(cbi.router, type, info);
}
}
}
static void dispatchRouteUnselected(int type, RouteInfo info) {
for (CallbackInfo cbi : sStatic.mCallbacks) {
if (cbi.filterRouteEvent(info)) {
cbi.cb.onRouteUnselected(cbi.router, type, info);
}
}
}
static void dispatchRouteChanged(RouteInfo info) {
dispatchRouteChanged(info, info.mSupportedTypes);
}
static void dispatchRouteChanged(RouteInfo info, int oldSupportedTypes) {
final int newSupportedTypes = info.mSupportedTypes;
for (CallbackInfo cbi : sStatic.mCallbacks) {
// Reconstruct some of the history for callbacks that may not have observed
// all of the events needed to correctly interpret the current state.
// FIXME: This is a strong signal that we should deprecate route type filtering
// completely in the future because it can lead to inconsistencies in
// applications.
final boolean oldVisibility = cbi.filterRouteEvent(oldSupportedTypes);
final boolean newVisibility = cbi.filterRouteEvent(newSupportedTypes);
if (!oldVisibility && newVisibility) {
cbi.cb.onRouteAdded(cbi.router, info);
if (info.isSelected()) {
cbi.cb.onRouteSelected(cbi.router, newSupportedTypes, info);
}
}
if (oldVisibility || newVisibility) {
cbi.cb.onRouteChanged(cbi.router, info);
}
if (oldVisibility && !newVisibility) {
if (info.isSelected()) {
cbi.cb.onRouteUnselected(cbi.router, oldSupportedTypes, info);
}
cbi.cb.onRouteRemoved(cbi.router, info);
}
}
}
static void dispatchRouteAdded(RouteInfo info) {
for (CallbackInfo cbi : sStatic.mCallbacks) {
if (cbi.filterRouteEvent(info)) {
cbi.cb.onRouteAdded(cbi.router, info);
}
}
}
static void dispatchRouteRemoved(RouteInfo info) {
for (CallbackInfo cbi : sStatic.mCallbacks) {
if (cbi.filterRouteEvent(info)) {
cbi.cb.onRouteRemoved(cbi.router, info);
}
}
}
static void dispatchRouteGrouped(RouteInfo info, RouteGroup group, int index) {
for (CallbackInfo cbi : sStatic.mCallbacks) {
if (cbi.filterRouteEvent(group)) {
cbi.cb.onRouteGrouped(cbi.router, info, group, index);
}
}
}
static void dispatchRouteUngrouped(RouteInfo info, RouteGroup group) {
for (CallbackInfo cbi : sStatic.mCallbacks) {
if (cbi.filterRouteEvent(group)) {
cbi.cb.onRouteUngrouped(cbi.router, info, group);
}
}
}
static void dispatchRouteVolumeChanged(RouteInfo info) {
for (CallbackInfo cbi : sStatic.mCallbacks) {
if (cbi.filterRouteEvent(info)) {
cbi.cb.onRouteVolumeChanged(cbi.router, info);
}
}
}
static void dispatchRoutePresentationDisplayChanged(RouteInfo info) {
for (CallbackInfo cbi : sStatic.mCallbacks) {
if (cbi.filterRouteEvent(info)) {
cbi.cb.onRoutePresentationDisplayChanged(cbi.router, info);
}
}
}
static void systemVolumeChanged(int newValue) {
final RouteInfo selectedRoute = sStatic.mSelectedRoute;
if (selectedRoute == null) return;
if (selectedRoute == sStatic.mBluetoothA2dpRoute ||
selectedRoute == sStatic.mDefaultAudioVideo) {
dispatchRouteVolumeChanged(selectedRoute);
} else if (sStatic.mBluetoothA2dpRoute != null) {
try {
dispatchRouteVolumeChanged(sStatic.mAudioService.isBluetoothA2dpOn() ?
sStatic.mBluetoothA2dpRoute : sStatic.mDefaultAudioVideo);
} catch (RemoteException e) {
Log.e(TAG, "Error checking Bluetooth A2DP state to report volume change", e);
}
} else {
dispatchRouteVolumeChanged(sStatic.mDefaultAudioVideo);
}
}
static void updateWifiDisplayStatus(WifiDisplayStatus status) {
WifiDisplay[] displays;
WifiDisplay activeDisplay;
if (status.getFeatureState() == WifiDisplayStatus.FEATURE_STATE_ON) {
displays = status.getDisplays();
activeDisplay = status.getActiveDisplay();
// Only the system is able to connect to wifi display routes.
// The display manager will enforce this with a permission check but it
// still publishes information about all available displays.
// Filter the list down to just the active display.
if (!sStatic.mCanConfigureWifiDisplays) {
if (activeDisplay != null) {
displays = new WifiDisplay[] { activeDisplay };
} else {
displays = WifiDisplay.EMPTY_ARRAY;
}
}
} else {
displays = WifiDisplay.EMPTY_ARRAY;
activeDisplay = null;
}
String activeDisplayAddress = activeDisplay != null ?
activeDisplay.getDeviceAddress() : null;
// Add or update routes.
for (int i = 0; i < displays.length; i++) {
final WifiDisplay d = displays[i];
if (shouldShowWifiDisplay(d, activeDisplay)) {
RouteInfo route = findWifiDisplayRoute(d);
if (route == null) {
route = makeWifiDisplayRoute(d, status);
addRouteStatic(route);
} else {
String address = d.getDeviceAddress();
boolean disconnected = !address.equals(activeDisplayAddress)
&& address.equals(sStatic.mPreviousActiveWifiDisplayAddress);
updateWifiDisplayRoute(route, d, status, disconnected);
}
if (d.equals(activeDisplay)) {
selectRouteStatic(route.getSupportedTypes(), route, false);
}
}
}
// Remove stale routes.
for (int i = sStatic.mRoutes.size(); i-- > 0; ) {
RouteInfo route = sStatic.mRoutes.get(i);
if (route.mDeviceAddress != null) {
WifiDisplay d = findWifiDisplay(displays, route.mDeviceAddress);
if (d == null || !shouldShowWifiDisplay(d, activeDisplay)) {
removeRouteStatic(route);
}
}
}
// Remember the current active wifi display address so that we can infer disconnections.
// TODO: This hack will go away once all of this is moved into the media router service.
sStatic.mPreviousActiveWifiDisplayAddress = activeDisplayAddress;
}
private static boolean shouldShowWifiDisplay(WifiDisplay d, WifiDisplay activeDisplay) {
return d.isRemembered() || d.equals(activeDisplay);
}
static int getWifiDisplayStatusCode(WifiDisplay d, WifiDisplayStatus wfdStatus) {
int newStatus;
if (wfdStatus.getScanState() == WifiDisplayStatus.SCAN_STATE_SCANNING) {
newStatus = RouteInfo.STATUS_SCANNING;
} else if (d.isAvailable()) {
newStatus = d.canConnect() ?
RouteInfo.STATUS_AVAILABLE: RouteInfo.STATUS_IN_USE;
} else {
newStatus = RouteInfo.STATUS_NOT_AVAILABLE;
}
if (d.equals(wfdStatus.getActiveDisplay())) {
final int activeState = wfdStatus.getActiveDisplayState();
switch (activeState) {
case WifiDisplayStatus.DISPLAY_STATE_CONNECTED:
newStatus = RouteInfo.STATUS_CONNECTED;
break;
case WifiDisplayStatus.DISPLAY_STATE_CONNECTING:
newStatus = RouteInfo.STATUS_CONNECTING;
break;
case WifiDisplayStatus.DISPLAY_STATE_NOT_CONNECTED:
Log.e(TAG, "Active display is not connected!");
break;
}
}
return newStatus;
}
static boolean isWifiDisplayEnabled(WifiDisplay d, WifiDisplayStatus wfdStatus) {
return d.isAvailable() && (d.canConnect() || d.equals(wfdStatus.getActiveDisplay()));
}
static RouteInfo makeWifiDisplayRoute(WifiDisplay display, WifiDisplayStatus wfdStatus) {
final RouteInfo newRoute = new RouteInfo(sStatic.mSystemCategory);
newRoute.mDeviceAddress = display.getDeviceAddress();
newRoute.mSupportedTypes = ROUTE_TYPE_LIVE_AUDIO | ROUTE_TYPE_LIVE_VIDEO
| ROUTE_TYPE_REMOTE_DISPLAY;
newRoute.mVolumeHandling = RouteInfo.PLAYBACK_VOLUME_FIXED;
newRoute.mPlaybackType = RouteInfo.PLAYBACK_TYPE_REMOTE;
newRoute.setRealStatusCode(getWifiDisplayStatusCode(display, wfdStatus));
newRoute.mEnabled = isWifiDisplayEnabled(display, wfdStatus);
newRoute.mName = display.getFriendlyDisplayName();
newRoute.mDescription = sStatic.mResources.getText(
com.android.internal.R.string.wireless_display_route_description);
newRoute.updatePresentationDisplay();
return newRoute;
}
private static void updateWifiDisplayRoute(
RouteInfo route, WifiDisplay display, WifiDisplayStatus wfdStatus,
boolean disconnected) {
boolean changed = false;
final String newName = display.getFriendlyDisplayName();
if (!route.getName().equals(newName)) {
route.mName = newName;
changed = true;
}
boolean enabled = isWifiDisplayEnabled(display, wfdStatus);
changed |= route.mEnabled != enabled;
route.mEnabled = enabled;
changed |= route.setRealStatusCode(getWifiDisplayStatusCode(display, wfdStatus));
if (changed) {
dispatchRouteChanged(route);
}
if ((!enabled || disconnected) && route.isSelected()) {
// Oops, no longer available. Reselect the default.
selectDefaultRouteStatic();
}
}
private static WifiDisplay findWifiDisplay(WifiDisplay[] displays, String deviceAddress) {
for (int i = 0; i < displays.length; i++) {
final WifiDisplay d = displays[i];
if (d.getDeviceAddress().equals(deviceAddress)) {
return d;
}
}
return null;
}
private static RouteInfo findWifiDisplayRoute(WifiDisplay d) {
final int count = sStatic.mRoutes.size();
for (int i = 0; i < count; i++) {
final RouteInfo info = sStatic.mRoutes.get(i);
if (d.getDeviceAddress().equals(info.mDeviceAddress)) {
return info;
}
}
return null;
}
/**
* Information about a media route.
*/
public static class RouteInfo {
CharSequence mName;
int mNameResId;
CharSequence mDescription;
private CharSequence mStatus;
int mSupportedTypes;
RouteGroup mGroup;
final RouteCategory mCategory;
Drawable mIcon;
// playback information
int mPlaybackType = PLAYBACK_TYPE_LOCAL;
int mVolumeMax = RemoteControlClient.DEFAULT_PLAYBACK_VOLUME;
int mVolume = RemoteControlClient.DEFAULT_PLAYBACK_VOLUME;
int mVolumeHandling = RemoteControlClient.DEFAULT_PLAYBACK_VOLUME_HANDLING;
int mPlaybackStream = AudioManager.STREAM_MUSIC;
VolumeCallbackInfo mVcb;
Display mPresentationDisplay;
int mPresentationDisplayId = -1;
String mDeviceAddress;
boolean mEnabled = true;
// An id by which the route is known to the media router service.
// Null if this route only exists as an artifact within this process.
String mGlobalRouteId;
// A predetermined connection status that can override mStatus
private int mRealStatusCode;
private int mResolvedStatusCode;
/** @hide */ public static final int STATUS_NONE = 0;
/** @hide */ public static final int STATUS_SCANNING = 1;
/** @hide */ public static final int STATUS_CONNECTING = 2;
/** @hide */ public static final int STATUS_AVAILABLE = 3;
/** @hide */ public static final int STATUS_NOT_AVAILABLE = 4;
/** @hide */ public static final int STATUS_IN_USE = 5;
/** @hide */ public static final int STATUS_CONNECTED = 6;
private Object mTag;
/**
* The default playback type, "local", indicating the presentation of the media is happening
* on the same device (e.g. a phone, a tablet) as where it is controlled from.
* @see #getPlaybackType()
*/
public final static int PLAYBACK_TYPE_LOCAL = 0;
/**
* A playback type indicating the presentation of the media is happening on
* a different device (i.e. the remote device) than where it is controlled from.
* @see #getPlaybackType()
*/
public final static int PLAYBACK_TYPE_REMOTE = 1;
/**
* Playback information indicating the playback volume is fixed, i.e. it cannot be
* controlled from this object. An example of fixed playback volume is a remote player,
* playing over HDMI where the user prefers to control the volume on the HDMI sink, rather
* than attenuate at the source.
* @see #getVolumeHandling()
*/
public final static int PLAYBACK_VOLUME_FIXED = 0;
/**
* Playback information indicating the playback volume is variable and can be controlled
* from this object.
* @see #getVolumeHandling()
*/
public final static int PLAYBACK_VOLUME_VARIABLE = 1;
RouteInfo(RouteCategory category) {
mCategory = category;
}
/**
* Gets the user-visible name of the route.
*
* The route name identifies the destination represented by the route.
* It may be a user-supplied name, an alias, or device serial number.
*
*
* @return The user-visible name of a media route. This is the string presented
* to users who may select this as the active route.
*/
public CharSequence getName() {
return getName(sStatic.mResources);
}
/**
* Return the properly localized/resource user-visible name of this route.
*
* The route name identifies the destination represented by the route.
* It may be a user-supplied name, an alias, or device serial number.
*
*
* @param context Context used to resolve the correct configuration to load
* @return The user-visible name of a media route. This is the string presented
* to users who may select this as the active route.
*/
public CharSequence getName(Context context) {
return getName(context.getResources());
}
CharSequence getName(Resources res) {
if (mNameResId != 0) {
return mName = res.getText(mNameResId);
}
return mName;
}
/**
* Gets the user-visible description of the route.
*
* The route description describes the kind of destination represented by the route.
* It may be a user-supplied string, a model number or brand of device.
*
*
* @return The description of the route, or null if none.
*/
public CharSequence getDescription() {
return mDescription;
}
/**
* @return The user-visible status for a media route. This may include a description
* of the currently playing media, if available.
*/
public CharSequence getStatus() {
return mStatus;
}
/**
* Set this route's status by predetermined status code. If the caller
* should dispatch a route changed event this call will return true;
*/
boolean setRealStatusCode(int statusCode) {
if (mRealStatusCode != statusCode) {
mRealStatusCode = statusCode;
return resolveStatusCode();
}
return false;
}
/**
* Resolves the status code whenever the real status code or selection state
* changes.
*/
boolean resolveStatusCode() {
int statusCode = mRealStatusCode;
if (isSelected()) {
switch (statusCode) {
// If the route is selected and its status appears to be between states
// then report it as connecting even though it has not yet had a chance
// to officially move into the CONNECTING state. Note that routes in
// the NONE state are assumed to not require an explicit connection
// lifecycle whereas those that are AVAILABLE are assumed to have
// to eventually proceed to CONNECTED.
case STATUS_AVAILABLE:
case STATUS_SCANNING:
statusCode = STATUS_CONNECTING;
break;
}
}
if (mResolvedStatusCode == statusCode) {
return false;
}
mResolvedStatusCode = statusCode;
int resId;
switch (statusCode) {
case STATUS_SCANNING:
resId = com.android.internal.R.string.media_route_status_scanning;
break;
case STATUS_CONNECTING:
resId = com.android.internal.R.string.media_route_status_connecting;
break;
case STATUS_AVAILABLE:
resId = com.android.internal.R.string.media_route_status_available;
break;
case STATUS_NOT_AVAILABLE:
resId = com.android.internal.R.string.media_route_status_not_available;
break;
case STATUS_IN_USE:
resId = com.android.internal.R.string.media_route_status_in_use;
break;
case STATUS_CONNECTED:
case STATUS_NONE:
default:
resId = 0;
break;
}
mStatus = resId != 0 ? sStatic.mResources.getText(resId) : null;
return true;
}
/**
* @hide
*/
public int getStatusCode() {
return mResolvedStatusCode;
}
/**
* @return A media type flag set describing which types this route supports.
*/
public int getSupportedTypes() {
return mSupportedTypes;
}
/** @hide */
public boolean matchesTypes(int types) {
return (mSupportedTypes & types) != 0;
}
/**
* @return The group that this route belongs to.
*/
public RouteGroup getGroup() {
return mGroup;
}
/**
* @return the category this route belongs to.
*/
public RouteCategory getCategory() {
return mCategory;
}
/**
* Get the icon representing this route.
* This icon will be used in picker UIs if available.
*
* @return the icon representing this route or null if no icon is available
*/
public Drawable getIconDrawable() {
return mIcon;
}
/**
* Set an application-specific tag object for this route.
* The application may use this to store arbitrary data associated with the
* route for internal tracking.
*
* Note that the lifespan of a route may be well past the lifespan of
* an Activity or other Context; take care that objects you store here
* will not keep more data in memory alive than you intend.
*
* @param tag Arbitrary, app-specific data for this route to hold for later use
*/
public void setTag(Object tag) {
mTag = tag;
routeUpdated();
}
/**
* @return The tag object previously set by the application
* @see #setTag(Object)
*/
public Object getTag() {
return mTag;
}
/**
* @return the type of playback associated with this route
* @see UserRouteInfo#setPlaybackType(int)
*/
public int getPlaybackType() {
return mPlaybackType;
}
/**
* @return the stream over which the playback associated with this route is performed
* @see UserRouteInfo#setPlaybackStream(int)
*/
public int getPlaybackStream() {
return mPlaybackStream;
}
/**
* Return the current volume for this route. Depending on the route, this may only
* be valid if the route is currently selected.
*
* @return the volume at which the playback associated with this route is performed
* @see UserRouteInfo#setVolume(int)
*/
public int getVolume() {
if (mPlaybackType == PLAYBACK_TYPE_LOCAL) {
int vol = 0;
try {
vol = sStatic.mAudioService.getStreamVolume(mPlaybackStream);
} catch (RemoteException e) {
Log.e(TAG, "Error getting local stream volume", e);
}
return vol;
} else {
return mVolume;
}
}
/**
* Request a volume change for this route.
* @param volume value between 0 and getVolumeMax
*/
public void requestSetVolume(int volume) {
if (mPlaybackType == PLAYBACK_TYPE_LOCAL) {
try {
sStatic.mAudioService.setStreamVolume(mPlaybackStream, volume, 0,
ActivityThread.currentPackageName());
} catch (RemoteException e) {
Log.e(TAG, "Error setting local stream volume", e);
}
} else {
sStatic.requestSetVolume(this, volume);
}
}
/**
* Request an incremental volume update for this route.
* @param direction Delta to apply to the current volume
*/
public void requestUpdateVolume(int direction) {
if (mPlaybackType == PLAYBACK_TYPE_LOCAL) {
try {
final int volume =
Math.max(0, Math.min(getVolume() + direction, getVolumeMax()));
sStatic.mAudioService.setStreamVolume(mPlaybackStream, volume, 0,
ActivityThread.currentPackageName());
} catch (RemoteException e) {
Log.e(TAG, "Error setting local stream volume", e);
}
} else {
sStatic.requestUpdateVolume(this, direction);
}
}
/**
* @return the maximum volume at which the playback associated with this route is performed
* @see UserRouteInfo#setVolumeMax(int)
*/
public int getVolumeMax() {
if (mPlaybackType == PLAYBACK_TYPE_LOCAL) {
int volMax = 0;
try {
volMax = sStatic.mAudioService.getStreamMaxVolume(mPlaybackStream);
} catch (RemoteException e) {
Log.e(TAG, "Error getting local stream volume", e);
}
return volMax;
} else {
return mVolumeMax;
}
}
/**
* @return how volume is handling on the route
* @see UserRouteInfo#setVolumeHandling(int)
*/
public int getVolumeHandling() {
return mVolumeHandling;
}
/**
* Gets the {@link Display} that should be used by the application to show
* a {@link android.app.Presentation} on an external display when this route is selected.
* Depending on the route, this may only be valid if the route is currently
* selected.
*
* The preferred presentation display may change independently of the route
* being selected or unselected. For example, the presentation display
* of the default system route may change when an external HDMI display is connected
* or disconnected even though the route itself has not changed.
*
* This method may return null if there is no external display associated with
* the route or if the display is not ready to show UI yet.
*
* The application should listen for changes to the presentation display
* using the {@link Callback#onRoutePresentationDisplayChanged} callback and
* show or dismiss its {@link android.app.Presentation} accordingly when the display
* becomes available or is removed.
*
* This method only makes sense for {@link #ROUTE_TYPE_LIVE_VIDEO live video} routes.
*
*
* @return The preferred presentation display to use when this route is
* selected or null if none.
*
* @see #ROUTE_TYPE_LIVE_VIDEO
* @see android.app.Presentation
*/
public Display getPresentationDisplay() {
return mPresentationDisplay;
}
boolean updatePresentationDisplay() {
Display display = choosePresentationDisplay();
if (mPresentationDisplay != display) {
mPresentationDisplay = display;
return true;
}
return false;
}
private Display choosePresentationDisplay() {
if ((mSupportedTypes & ROUTE_TYPE_LIVE_VIDEO) != 0) {
Display[] displays = sStatic.getAllPresentationDisplays();
// Ensure that the specified display is valid for presentations.
// This check will normally disallow the default display unless it was
// configured as a presentation display for some reason.
if (mPresentationDisplayId >= 0) {
for (Display display : displays) {
if (display.getDisplayId() == mPresentationDisplayId) {
return display;
}
}
return null;
}
// Find the indicated Wifi display by its address.
if (mDeviceAddress != null) {
for (Display display : displays) {
if (display.getType() == Display.TYPE_WIFI
&& mDeviceAddress.equals(display.getAddress())) {
return display;
}
}
return null;
}
// For the default route, choose the first presentation display from the list.
if (this == sStatic.mDefaultAudioVideo && displays.length > 0) {
return displays[0];
}
}
return null;
}
/** @hide */
public String getDeviceAddress() {
return mDeviceAddress;
}
/**
* Returns true if this route is enabled and may be selected.
*
* @return True if this route is enabled.
*/
public boolean isEnabled() {
return mEnabled;
}
/**
* Returns true if the route is in the process of connecting and is not
* yet ready for use.
*
* @return True if this route is in the process of connecting.
*/
public boolean isConnecting() {
return mResolvedStatusCode == STATUS_CONNECTING;
}
/** @hide */
public boolean isSelected() {
return this == sStatic.mSelectedRoute;
}
/** @hide */
public boolean isDefault() {
return this == sStatic.mDefaultAudioVideo;
}
/** @hide */
public void select() {
selectRouteStatic(mSupportedTypes, this, true);
}
void setStatusInt(CharSequence status) {
if (!status.equals(mStatus)) {
mStatus = status;
if (mGroup != null) {
mGroup.memberStatusChanged(this, status);
}
routeUpdated();
}
}
final IRemoteVolumeObserver.Stub mRemoteVolObserver = new IRemoteVolumeObserver.Stub() {
@Override
public void dispatchRemoteVolumeUpdate(final int direction, final int value) {
sStatic.mHandler.post(new Runnable() {
@Override
public void run() {
if (mVcb != null) {
if (direction != 0) {
mVcb.vcb.onVolumeUpdateRequest(mVcb.route, direction);
} else {
mVcb.vcb.onVolumeSetRequest(mVcb.route, value);
}
}
}
});
}
};
void routeUpdated() {
updateRoute(this);
}
@Override
public String toString() {
String supportedTypes = typesToString(getSupportedTypes());
return getClass().getSimpleName() + "{ name=" + getName() +
", description=" + getDescription() +
", status=" + getStatus() +
", category=" + getCategory() +
", supportedTypes=" + supportedTypes +
", presentationDisplay=" + mPresentationDisplay + " }";
}
}
/**
* Information about a route that the application may define and modify.
* A user route defaults to {@link RouteInfo#PLAYBACK_TYPE_REMOTE} and
* {@link RouteInfo#PLAYBACK_VOLUME_FIXED}.
*
* @see MediaRouter.RouteInfo
*/
public static class UserRouteInfo extends RouteInfo {
RemoteControlClient mRcc;
SessionVolumeProvider mSvp;
UserRouteInfo(RouteCategory category) {
super(category);
mSupportedTypes = ROUTE_TYPE_USER;
mPlaybackType = PLAYBACK_TYPE_REMOTE;
mVolumeHandling = PLAYBACK_VOLUME_FIXED;
}
/**
* Set the user-visible name of this route.
* @param name Name to display to the user to describe this route
*/
public void setName(CharSequence name) {
mName = name;
routeUpdated();
}
/**
* Set the user-visible name of this route.
*
* The route name identifies the destination represented by the route.
* It may be a user-supplied name, an alias, or device serial number.
*
*
* @param resId Resource ID of the name to display to the user to describe this route
*/
public void setName(int resId) {
mNameResId = resId;
mName = null;
routeUpdated();
}
/**
* Set the user-visible description of this route.
*
* The route description describes the kind of destination represented by the route.
* It may be a user-supplied string, a model number or brand of device.
*
*
* @param description The description of the route, or null if none.
*/
public void setDescription(CharSequence description) {
mDescription = description;
routeUpdated();
}
/**
* Set the current user-visible status for this route.
* @param status Status to display to the user to describe what the endpoint
* of this route is currently doing
*/
public void setStatus(CharSequence status) {
setStatusInt(status);
}
/**
* Set the RemoteControlClient responsible for reporting playback info for this
* user route.
*
* If this route manages remote playback, the data exposed by this
* RemoteControlClient will be used to reflect and update information
* such as route volume info in related UIs.
*
* The RemoteControlClient must have been previously registered with
* {@link AudioManager#registerRemoteControlClient(RemoteControlClient)}.
*
* @param rcc RemoteControlClient associated with this route
*/
public void setRemoteControlClient(RemoteControlClient rcc) {
mRcc = rcc;
updatePlaybackInfoOnRcc();
}
/**
* Retrieve the RemoteControlClient associated with this route, if one has been set.
*
* @return the RemoteControlClient associated with this route
* @see #setRemoteControlClient(RemoteControlClient)
*/
public RemoteControlClient getRemoteControlClient() {
return mRcc;
}
/**
* Set an icon that will be used to represent this route.
* The system may use this icon in picker UIs or similar.
*
* @param icon icon drawable to use to represent this route
*/
public void setIconDrawable(Drawable icon) {
mIcon = icon;
}
/**
* Set an icon that will be used to represent this route.
* The system may use this icon in picker UIs or similar.
*
* @param resId Resource ID of an icon drawable to use to represent this route
*/
public void setIconResource(int resId) {
setIconDrawable(sStatic.mResources.getDrawable(resId));
}
/**
* Set a callback to be notified of volume update requests
* @param vcb
*/
public void setVolumeCallback(VolumeCallback vcb) {
mVcb = new VolumeCallbackInfo(vcb, this);
}
/**
* Defines whether playback associated with this route is "local"
* ({@link RouteInfo#PLAYBACK_TYPE_LOCAL}) or "remote"
* ({@link RouteInfo#PLAYBACK_TYPE_REMOTE}).
* @param type
*/
public void setPlaybackType(int type) {
if (mPlaybackType != type) {
mPlaybackType = type;
configureSessionVolume();
}
}
/**
* Defines whether volume for the playback associated with this route is fixed
* ({@link RouteInfo#PLAYBACK_VOLUME_FIXED}) or can modified
* ({@link RouteInfo#PLAYBACK_VOLUME_VARIABLE}).
* @param volumeHandling
*/
public void setVolumeHandling(int volumeHandling) {
if (mVolumeHandling != volumeHandling) {
mVolumeHandling = volumeHandling;
configureSessionVolume();
}
}
/**
* Defines at what volume the playback associated with this route is performed (for user
* feedback purposes). This information is only used when the playback is not local.
* @param volume
*/
public void setVolume(int volume) {
volume = Math.max(0, Math.min(volume, getVolumeMax()));
if (mVolume != volume) {
mVolume = volume;
if (mSvp != null) {
mSvp.setCurrentVolume(mVolume);
}
dispatchRouteVolumeChanged(this);
if (mGroup != null) {
mGroup.memberVolumeChanged(this);
}
}
}
@Override
public void requestSetVolume(int volume) {
if (mVolumeHandling == PLAYBACK_VOLUME_VARIABLE) {
if (mVcb == null) {
Log.e(TAG, "Cannot requestSetVolume on user route - no volume callback set");
return;
}
mVcb.vcb.onVolumeSetRequest(this, volume);
}
}
@Override
public void requestUpdateVolume(int direction) {
if (mVolumeHandling == PLAYBACK_VOLUME_VARIABLE) {
if (mVcb == null) {
Log.e(TAG, "Cannot requestChangeVolume on user route - no volumec callback set");
return;
}
mVcb.vcb.onVolumeUpdateRequest(this, direction);
}
}
/**
* Defines the maximum volume at which the playback associated with this route is performed
* (for user feedback purposes). This information is only used when the playback is not
* local.
* @param volumeMax
*/
public void setVolumeMax(int volumeMax) {
if (mVolumeMax != volumeMax) {
mVolumeMax = volumeMax;
configureSessionVolume();
}
}
/**
* Defines over what stream type the media is presented.
* @param stream
*/
public void setPlaybackStream(int stream) {
if (mPlaybackStream != stream) {
mPlaybackStream = stream;
configureSessionVolume();
}
}
private void updatePlaybackInfoOnRcc() {
configureSessionVolume();
}
private void configureSessionVolume() {
if (mRcc == null) {
if (DEBUG) {
Log.d(TAG, "No Rcc to configure volume for route " + mName);
}
return;
}
MediaSession session = mRcc.getMediaSession();
if (session == null) {
if (DEBUG) {
Log.d(TAG, "Rcc has no session to configure volume");
}
return;
}
if (mPlaybackType == RemoteControlClient.PLAYBACK_TYPE_REMOTE) {
int volumeControl = VolumeProvider.VOLUME_CONTROL_FIXED;
switch (mVolumeHandling) {
case RemoteControlClient.PLAYBACK_VOLUME_VARIABLE:
volumeControl = VolumeProvider.VOLUME_CONTROL_ABSOLUTE;
break;
case RemoteControlClient.PLAYBACK_VOLUME_FIXED:
default:
break;
}
// Only register a new listener if necessary
if (mSvp == null || mSvp.getVolumeControl() != volumeControl
|| mSvp.getMaxVolume() != mVolumeMax) {
mSvp = new SessionVolumeProvider(volumeControl, mVolumeMax, mVolume);
session.setPlaybackToRemote(mSvp);
}
} else {
// We only know how to handle local and remote, fall back to local if not remote.
AudioAttributes.Builder bob = new AudioAttributes.Builder();
bob.setLegacyStreamType(mPlaybackStream);
session.setPlaybackToLocal(bob.build());
mSvp = null;
}
}
class SessionVolumeProvider extends VolumeProvider {
public SessionVolumeProvider(int volumeControl, int maxVolume, int currentVolume) {
super(volumeControl, maxVolume, currentVolume);
}
@Override
public void onSetVolumeTo(final int volume) {
sStatic.mHandler.post(new Runnable() {
@Override
public void run() {
if (mVcb != null) {
mVcb.vcb.onVolumeSetRequest(mVcb.route, volume);
}
}
});
}
@Override
public void onAdjustVolume(final int direction) {
sStatic.mHandler.post(new Runnable() {
@Override
public void run() {
if (mVcb != null) {
mVcb.vcb.onVolumeUpdateRequest(mVcb.route, direction);
}
}
});
}
}
}
/**
* Information about a route that consists of multiple other routes in a group.
*/
public static class RouteGroup extends RouteInfo {
final ArrayList mRoutes = new ArrayList();
private boolean mUpdateName;
RouteGroup(RouteCategory category) {
super(category);
mGroup = this;
mVolumeHandling = PLAYBACK_VOLUME_FIXED;
}
@Override
CharSequence getName(Resources res) {
if (mUpdateName) updateName();
return super.getName(res);
}
/**
* Add a route to this group. The route must not currently belong to another group.
*
* @param route route to add to this group
*/
public void addRoute(RouteInfo route) {
if (route.getGroup() != null) {
throw new IllegalStateException("Route " + route + " is already part of a group.");
}
if (route.getCategory() != mCategory) {
throw new IllegalArgumentException(
"Route cannot be added to a group with a different category. " +
"(Route category=" + route.getCategory() +
" group category=" + mCategory + ")");
}
final int at = mRoutes.size();
mRoutes.add(route);
route.mGroup = this;
mUpdateName = true;
updateVolume();
routeUpdated();
dispatchRouteGrouped(route, this, at);
}
/**
* Add a route to this group before the specified index.
*
* @param route route to add
* @param insertAt insert the new route before this index
*/
public void addRoute(RouteInfo route, int insertAt) {
if (route.getGroup() != null) {
throw new IllegalStateException("Route " + route + " is already part of a group.");
}
if (route.getCategory() != mCategory) {
throw new IllegalArgumentException(
"Route cannot be added to a group with a different category. " +
"(Route category=" + route.getCategory() +
" group category=" + mCategory + ")");
}
mRoutes.add(insertAt, route);
route.mGroup = this;
mUpdateName = true;
updateVolume();
routeUpdated();
dispatchRouteGrouped(route, this, insertAt);
}
/**
* Remove a route from this group.
*
* @param route route to remove
*/
public void removeRoute(RouteInfo route) {
if (route.getGroup() != this) {
throw new IllegalArgumentException("Route " + route +
" is not a member of this group.");
}
mRoutes.remove(route);
route.mGroup = null;
mUpdateName = true;
updateVolume();
dispatchRouteUngrouped(route, this);
routeUpdated();
}
/**
* Remove the route at the specified index from this group.
*
* @param index index of the route to remove
*/
public void removeRoute(int index) {
RouteInfo route = mRoutes.remove(index);
route.mGroup = null;
mUpdateName = true;
updateVolume();
dispatchRouteUngrouped(route, this);
routeUpdated();
}
/**
* @return The number of routes in this group
*/
public int getRouteCount() {
return mRoutes.size();
}
/**
* Return the route in this group at the specified index
*
* @param index Index to fetch
* @return The route at index
*/
public RouteInfo getRouteAt(int index) {
return mRoutes.get(index);
}
/**
* Set an icon that will be used to represent this group.
* The system may use this icon in picker UIs or similar.
*
* @param icon icon drawable to use to represent this group
*/
public void setIconDrawable(Drawable icon) {
mIcon = icon;
}
/**
* Set an icon that will be used to represent this group.
* The system may use this icon in picker UIs or similar.
*
* @param resId Resource ID of an icon drawable to use to represent this group
*/
public void setIconResource(int resId) {
setIconDrawable(sStatic.mResources.getDrawable(resId));
}
@Override
public void requestSetVolume(int volume) {
final int maxVol = getVolumeMax();
if (maxVol == 0) {
return;
}
final float scaledVolume = (float) volume / maxVol;
final int routeCount = getRouteCount();
for (int i = 0; i < routeCount; i++) {
final RouteInfo route = getRouteAt(i);
final int routeVol = (int) (scaledVolume * route.getVolumeMax());
route.requestSetVolume(routeVol);
}
if (volume != mVolume) {
mVolume = volume;
dispatchRouteVolumeChanged(this);
}
}
@Override
public void requestUpdateVolume(int direction) {
final int maxVol = getVolumeMax();
if (maxVol == 0) {
return;
}
final int routeCount = getRouteCount();
int volume = 0;
for (int i = 0; i < routeCount; i++) {
final RouteInfo route = getRouteAt(i);
route.requestUpdateVolume(direction);
final int routeVol = route.getVolume();
if (routeVol > volume) {
volume = routeVol;
}
}
if (volume != mVolume) {
mVolume = volume;
dispatchRouteVolumeChanged(this);
}
}
void memberNameChanged(RouteInfo info, CharSequence name) {
mUpdateName = true;
routeUpdated();
}
void memberStatusChanged(RouteInfo info, CharSequence status) {
setStatusInt(status);
}
void memberVolumeChanged(RouteInfo info) {
updateVolume();
}
void updateVolume() {
// A group always represents the highest component volume value.
final int routeCount = getRouteCount();
int volume = 0;
for (int i = 0; i < routeCount; i++) {
final int routeVol = getRouteAt(i).getVolume();
if (routeVol > volume) {
volume = routeVol;
}
}
if (volume != mVolume) {
mVolume = volume;
dispatchRouteVolumeChanged(this);
}
}
@Override
void routeUpdated() {
int types = 0;
final int count = mRoutes.size();
if (count == 0) {
// Don't keep empty groups in the router.
MediaRouter.removeRouteStatic(this);
return;
}
int maxVolume = 0;
boolean isLocal = true;
boolean isFixedVolume = true;
for (int i = 0; i < count; i++) {
final RouteInfo route = mRoutes.get(i);
types |= route.mSupportedTypes;
final int routeMaxVolume = route.getVolumeMax();
if (routeMaxVolume > maxVolume) {
maxVolume = routeMaxVolume;
}
isLocal &= route.getPlaybackType() == PLAYBACK_TYPE_LOCAL;
isFixedVolume &= route.getVolumeHandling() == PLAYBACK_VOLUME_FIXED;
}
mPlaybackType = isLocal ? PLAYBACK_TYPE_LOCAL : PLAYBACK_TYPE_REMOTE;
mVolumeHandling = isFixedVolume ? PLAYBACK_VOLUME_FIXED : PLAYBACK_VOLUME_VARIABLE;
mSupportedTypes = types;
mVolumeMax = maxVolume;
mIcon = count == 1 ? mRoutes.get(0).getIconDrawable() : null;
super.routeUpdated();
}
void updateName() {
final StringBuilder sb = new StringBuilder();
final int count = mRoutes.size();
for (int i = 0; i < count; i++) {
final RouteInfo info = mRoutes.get(i);
// TODO: There's probably a much more correct way to localize this.
if (i > 0) sb.append(", ");
sb.append(info.mName);
}
mName = sb.toString();
mUpdateName = false;
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder(super.toString());
sb.append('[');
final int count = mRoutes.size();
for (int i = 0; i < count; i++) {
if (i > 0) sb.append(", ");
sb.append(mRoutes.get(i));
}
sb.append(']');
return sb.toString();
}
}
/**
* Definition of a category of routes. All routes belong to a category.
*/
public static class RouteCategory {
CharSequence mName;
int mNameResId;
int mTypes;
final boolean mGroupable;
boolean mIsSystem;
RouteCategory(CharSequence name, int types, boolean groupable) {
mName = name;
mTypes = types;
mGroupable = groupable;
}
RouteCategory(int nameResId, int types, boolean groupable) {
mNameResId = nameResId;
mTypes = types;
mGroupable = groupable;
}
/**
* @return the name of this route category
*/
public CharSequence getName() {
return getName(sStatic.mResources);
}
/**
* Return the properly localized/configuration dependent name of this RouteCategory.
*
* @param context Context to resolve name resources
* @return the name of this route category
*/
public CharSequence getName(Context context) {
return getName(context.getResources());
}
CharSequence getName(Resources res) {
if (mNameResId != 0) {
return res.getText(mNameResId);
}
return mName;
}
/**
* Return the current list of routes in this category that have been added
* to the MediaRouter.
*
* This list will not include routes that are nested within RouteGroups.
* A RouteGroup is treated as a single route within its category.
*
* @param out a List to fill with the routes in this category. If this parameter is
* non-null, it will be cleared, filled with the current routes with this
* category, and returned. If this parameter is null, a new List will be
* allocated to report the category's current routes.
* @return A list with the routes in this category that have been added to the MediaRouter.
*/
public List getRoutes(List out) {
if (out == null) {
out = new ArrayList();
} else {
out.clear();
}
final int count = getRouteCountStatic();
for (int i = 0; i < count; i++) {
final RouteInfo route = getRouteAtStatic(i);
if (route.mCategory == this) {
out.add(route);
}
}
return out;
}
/**
* @return Flag set describing the route types supported by this category
*/
public int getSupportedTypes() {
return mTypes;
}
/**
* Return whether or not this category supports grouping.
*
* If this method returns true, all routes obtained from this category
* via calls to {@link #getRouteAt(int)} will be {@link MediaRouter.RouteGroup}s.
*
* @return true if this category supports
*/
public boolean isGroupable() {
return mGroupable;
}
/**
* @return true if this is the category reserved for system routes.
* @hide
*/
public boolean isSystem() {
return mIsSystem;
}
@Override
public String toString() {
return "RouteCategory{ name=" + mName + " types=" + typesToString(mTypes) +
" groupable=" + mGroupable + " }";
}
}
static class CallbackInfo {
public int type;
public int flags;
public final Callback cb;
public final MediaRouter router;
public CallbackInfo(Callback cb, int type, int flags, MediaRouter router) {
this.cb = cb;
this.type = type;
this.flags = flags;
this.router = router;
}
public boolean filterRouteEvent(RouteInfo route) {
return filterRouteEvent(route.mSupportedTypes);
}
public boolean filterRouteEvent(int supportedTypes) {
return (flags & CALLBACK_FLAG_UNFILTERED_EVENTS) != 0
|| (type & supportedTypes) != 0;
}
}
/**
* Interface for receiving events about media routing changes.
* All methods of this interface will be called from the application's main thread.
*
* A Callback will only receive events relevant to routes that the callback
* was registered for unless the {@link MediaRouter#CALLBACK_FLAG_UNFILTERED_EVENTS}
* flag was specified in {@link MediaRouter#addCallback(int, Callback, int)}.
*
*
* @see MediaRouter#addCallback(int, Callback, int)
* @see MediaRouter#removeCallback(Callback)
*/
public static abstract class Callback {
/**
* Called when the supplied route becomes selected as the active route
* for the given route type.
*
* @param router the MediaRouter reporting the event
* @param type Type flag set indicating the routes that have been selected
* @param info Route that has been selected for the given route types
*/
public abstract void onRouteSelected(MediaRouter router, int type, RouteInfo info);
/**
* Called when the supplied route becomes unselected as the active route
* for the given route type.
*
* @param router the MediaRouter reporting the event
* @param type Type flag set indicating the routes that have been unselected
* @param info Route that has been unselected for the given route types
*/
public abstract void onRouteUnselected(MediaRouter router, int type, RouteInfo info);
/**
* Called when a route for the specified type was added.
*
* @param router the MediaRouter reporting the event
* @param info Route that has become available for use
*/
public abstract void onRouteAdded(MediaRouter router, RouteInfo info);
/**
* Called when a route for the specified type was removed.
*
* @param router the MediaRouter reporting the event
* @param info Route that has been removed from availability
*/
public abstract void onRouteRemoved(MediaRouter router, RouteInfo info);
/**
* Called when an aspect of the indicated route has changed.
*
* This will not indicate that the types supported by this route have
* changed, only that cosmetic info such as name or status have been updated.
*
* @param router the MediaRouter reporting the event
* @param info The route that was changed
*/
public abstract void onRouteChanged(MediaRouter router, RouteInfo info);
/**
* Called when a route is added to a group.
*
* @param router the MediaRouter reporting the event
* @param info The route that was added
* @param group The group the route was added to
* @param index The route index within group that info was added at
*/
public abstract void onRouteGrouped(MediaRouter router, RouteInfo info, RouteGroup group,
int index);
/**
* Called when a route is removed from a group.
*
* @param router the MediaRouter reporting the event
* @param info The route that was removed
* @param group The group the route was removed from
*/
public abstract void onRouteUngrouped(MediaRouter router, RouteInfo info, RouteGroup group);
/**
* Called when a route's volume changes.
*
* @param router the MediaRouter reporting the event
* @param info The route with altered volume
*/
public abstract void onRouteVolumeChanged(MediaRouter router, RouteInfo info);
/**
* Called when a route's presentation display changes.
*
* This method is called whenever the route's presentation display becomes
* available, is removes or has changes to some of its properties (such as its size).
*
*
* @param router the MediaRouter reporting the event
* @param info The route whose presentation display changed
*
* @see RouteInfo#getPresentationDisplay()
*/
public void onRoutePresentationDisplayChanged(MediaRouter router, RouteInfo info) {
}
}
/**
* Stub implementation of {@link MediaRouter.Callback}.
* Each abstract method is defined as a no-op. Override just the ones
* you need.
*/
public static class SimpleCallback extends Callback {
@Override
public void onRouteSelected(MediaRouter router, int type, RouteInfo info) {
}
@Override
public void onRouteUnselected(MediaRouter router, int type, RouteInfo info) {
}
@Override
public void onRouteAdded(MediaRouter router, RouteInfo info) {
}
@Override
public void onRouteRemoved(MediaRouter router, RouteInfo info) {
}
@Override
public void onRouteChanged(MediaRouter router, RouteInfo info) {
}
@Override
public void onRouteGrouped(MediaRouter router, RouteInfo info, RouteGroup group,
int index) {
}
@Override
public void onRouteUngrouped(MediaRouter router, RouteInfo info, RouteGroup group) {
}
@Override
public void onRouteVolumeChanged(MediaRouter router, RouteInfo info) {
}
}
static class VolumeCallbackInfo {
public final VolumeCallback vcb;
public final RouteInfo route;
public VolumeCallbackInfo(VolumeCallback vcb, RouteInfo route) {
this.vcb = vcb;
this.route = route;
}
}
/**
* Interface for receiving events about volume changes.
* All methods of this interface will be called from the application's main thread.
*
* A VolumeCallback will only receive events relevant to routes that the callback
* was registered for.
*
* @see UserRouteInfo#setVolumeCallback(VolumeCallback)
*/
public static abstract class VolumeCallback {
/**
* Called when the volume for the route should be increased or decreased.
* @param info the route affected by this event
* @param direction an integer indicating whether the volume is to be increased
* (positive value) or decreased (negative value).
* For bundled changes, the absolute value indicates the number of changes
* in the same direction, e.g. +3 corresponds to three "volume up" changes.
*/
public abstract void onVolumeUpdateRequest(RouteInfo info, int direction);
/**
* Called when the volume for the route should be set to the given value
* @param info the route affected by this event
* @param volume an integer indicating the new volume value that should be used, always
* between 0 and the value set by {@link UserRouteInfo#setVolumeMax(int)}.
*/
public abstract void onVolumeSetRequest(RouteInfo info, int volume);
}
static class VolumeChangeReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals(AudioManager.VOLUME_CHANGED_ACTION)) {
final int streamType = intent.getIntExtra(AudioManager.EXTRA_VOLUME_STREAM_TYPE,
-1);
if (streamType != AudioManager.STREAM_MUSIC) {
return;
}
final int newVolume = intent.getIntExtra(AudioManager.EXTRA_VOLUME_STREAM_VALUE, 0);
final int oldVolume = intent.getIntExtra(
AudioManager.EXTRA_PREV_VOLUME_STREAM_VALUE, 0);
if (newVolume != oldVolume) {
systemVolumeChanged(newVolume);
}
}
}
}
static class WifiDisplayStatusChangedReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals(DisplayManager.ACTION_WIFI_DISPLAY_STATUS_CHANGED)) {
updateWifiDisplayStatus((WifiDisplayStatus) intent.getParcelableExtra(
DisplayManager.EXTRA_WIFI_DISPLAY_STATUS));
}
}
}
}