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.
*/ @SystemService(Context.MEDIA_ROUTER_SERVICE) 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 String mPackageName; final Resources mResources; final IAudioService mAudioService; final DisplayManager mDisplayService; final IMediaRouterService mMediaRouterService; final Handler mHandler; final CopyOnWriteArrayListA 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* 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 * @throws IllegalArgumentException if the given route is {@code null} */ public void selectRoute(int types, @NonNull RouteInfo route) { if (route == null) { throw new IllegalArgumentException("Route cannot be null."); } 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, @NonNull RouteInfo route, boolean explicit) { Log.v(TAG, "Selecting route: " + route); assert(route != null); 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.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) { Log.v(TAG, "Adding route: " + 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) { Log.v(TAG, "Removing route: " + 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) { Log.v(TAG, "Dispatching route change: " + info); 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(); newRoute.mDeviceType = RouteInfo.DEVICE_TYPE_TV; 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; int mDeviceType; 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; /** @hide */ @IntDef({DEVICE_TYPE_UNKNOWN, DEVICE_TYPE_TV, DEVICE_TYPE_SPEAKER, DEVICE_TYPE_BLUETOOTH}) @Retention(RetentionPolicy.SOURCE) public @interface DeviceType {} /** * The default receiver device type of the route indicating the type is unknown. * * @see #getDeviceType */ public static final int DEVICE_TYPE_UNKNOWN = 0; /** * A receiver device type of the route indicating the presentation of the media is happening * on a TV. * * @see #getDeviceType */ public static final int DEVICE_TYPE_TV = 1; /** * A receiver device type of the route indicating the presentation of the media is happening * on a speaker. * * @see #getDeviceType */ public static final int DEVICE_TYPE_SPEAKER = 2; /** * A receiver device type of the route indicating the presentation of the media is happening * on a bluetooth device such as a bluetooth speaker. * * @see #getDeviceType */ public static final int DEVICE_TYPE_BLUETOOTH = 3; private Object mTag; /** @hide */ @IntDef({PLAYBACK_TYPE_LOCAL, PLAYBACK_TYPE_REMOTE}) @Retention(RetentionPolicy.SOURCE) public @interface PlaybackType {} /** * 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; /** @hide */ @IntDef({PLAYBACK_VOLUME_FIXED,PLAYBACK_VOLUME_VARIABLE}) @Retention(RetentionPolicy.SOURCE) private @interface PlaybackVolume {} /** * 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; mDeviceType = DEVICE_TYPE_UNKNOWN; } /** * 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 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; } /** * Gets the type of the receiver device associated with this route. * * @return The type of the receiver device associated with this route: * {@link #DEVICE_TYPE_BLUETOOTH}, {@link #DEVICE_TYPE_TV}, {@link #DEVICE_TYPE_SPEAKER}, * or {@link #DEVICE_TYPE_UNKNOWN}. */ @DeviceType public int getDeviceType() { return mDeviceType; } /** @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) */ @PlaybackType 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) */ @PlaybackVolume 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) { mNameResId = 0; 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(@DrawableRes 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(@RouteInfo.PlaybackType 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(@RouteInfo.PlaybackVolume 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 " + getName()); } 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) { @VolumeProvider.ControlType 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(@VolumeProvider.ControlType 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 ArrayListThis 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 ListIf 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=" + getName() + " 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)); } } } }