| /* |
| * Copyright (C) 2015 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.car; |
| |
| import android.annotation.CallbackExecutor; |
| import android.annotation.IntDef; |
| import android.annotation.NonNull; |
| import android.annotation.Nullable; |
| import android.annotation.RequiresPermission; |
| import android.annotation.SystemApi; |
| import android.bluetooth.BluetoothDevice; |
| import android.car.projection.ProjectionOptions; |
| import android.car.projection.ProjectionStatus; |
| import android.car.projection.ProjectionStatus.ProjectionState; |
| import android.content.Intent; |
| import android.net.wifi.WifiConfiguration; |
| import android.os.Binder; |
| import android.os.Bundle; |
| import android.os.Handler; |
| import android.os.IBinder; |
| import android.os.Looper; |
| import android.os.Message; |
| import android.os.Messenger; |
| import android.os.RemoteException; |
| import android.util.ArraySet; |
| import android.util.Log; |
| import android.util.Pair; |
| import android.view.KeyEvent; |
| |
| import com.android.internal.annotations.GuardedBy; |
| import com.android.internal.util.Preconditions; |
| |
| import java.lang.annotation.ElementType; |
| import java.lang.annotation.Retention; |
| import java.lang.annotation.RetentionPolicy; |
| import java.lang.annotation.Target; |
| import java.lang.ref.WeakReference; |
| import java.util.ArrayList; |
| import java.util.BitSet; |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.LinkedHashSet; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.concurrent.Executor; |
| |
| /** |
| * CarProjectionManager allows applications implementing projection to register/unregister itself |
| * with projection manager, listen for voice notification. |
| * |
| * A client must have {@link Car#PERMISSION_CAR_PROJECTION} permission in order to access this |
| * manager. |
| * |
| * @hide |
| */ |
| @SystemApi |
| public final class CarProjectionManager extends CarManagerBase { |
| private static final String TAG = CarProjectionManager.class.getSimpleName(); |
| |
| private final Binder mToken = new Binder(); |
| private final Object mLock = new Object(); |
| |
| /** |
| * Listener to get projected notifications. |
| * |
| * Currently only voice search request is supported. |
| */ |
| public interface CarProjectionListener { |
| /** |
| * Voice search was requested by the user. |
| */ |
| void onVoiceAssistantRequest(boolean fromLongPress); |
| } |
| |
| /** |
| * Interface for projection apps to receive and handle key events from the system. |
| */ |
| public interface ProjectionKeyEventHandler { |
| /** |
| * Called when a projection key event occurs. |
| * |
| * @param event The projection key event that occurred. |
| */ |
| void onKeyEvent(@KeyEventNum int event); |
| } |
| /** |
| * Flag for {@link #registerProjectionListener(CarProjectionListener, int)}: subscribe to |
| * voice-search short-press requests. |
| * |
| * @deprecated Use {@link #addKeyEventHandler(Set, ProjectionKeyEventHandler)} with the |
| * {@link #KEY_EVENT_VOICE_SEARCH_SHORT_PRESS_KEY_UP} event instead. |
| */ |
| @Deprecated |
| public static final int PROJECTION_VOICE_SEARCH = 0x1; |
| /** |
| * Flag for {@link #registerProjectionListener(CarProjectionListener, int)}: subscribe to |
| * voice-search long-press requests. |
| * |
| * @deprecated Use {@link #addKeyEventHandler(Set, ProjectionKeyEventHandler)} with the |
| * {@link #KEY_EVENT_VOICE_SEARCH_LONG_PRESS_KEY_DOWN} event instead. |
| */ |
| @Deprecated |
| public static final int PROJECTION_LONG_PRESS_VOICE_SEARCH = 0x2; |
| |
| /** |
| * Event for {@link #addKeyEventHandler}: fired when the {@link KeyEvent#KEYCODE_VOICE_ASSIST} |
| * key is pressed down. |
| * |
| * If the key is released before the long-press timeout, |
| * {@link #KEY_EVENT_VOICE_SEARCH_SHORT_PRESS_KEY_UP} will be fired. If the key is held past the |
| * long-press timeout, {@link #KEY_EVENT_VOICE_SEARCH_LONG_PRESS_KEY_DOWN} will be fired, |
| * followed by {@link #KEY_EVENT_VOICE_SEARCH_LONG_PRESS_KEY_UP}. |
| */ |
| public static final int KEY_EVENT_VOICE_SEARCH_KEY_DOWN = 0; |
| /** |
| * Event for {@link #addKeyEventHandler}: fired when the {@link KeyEvent#KEYCODE_VOICE_ASSIST} |
| * key is released after a short-press. |
| */ |
| public static final int KEY_EVENT_VOICE_SEARCH_SHORT_PRESS_KEY_UP = 1; |
| /** |
| * Event for {@link #addKeyEventHandler}: fired when the {@link KeyEvent#KEYCODE_VOICE_ASSIST} |
| * key is held down past the long-press timeout. |
| */ |
| public static final int KEY_EVENT_VOICE_SEARCH_LONG_PRESS_KEY_DOWN = 2; |
| /** |
| * Event for {@link #addKeyEventHandler}: fired when the {@link KeyEvent#KEYCODE_VOICE_ASSIST} |
| * key is released after a long-press. |
| */ |
| public static final int KEY_EVENT_VOICE_SEARCH_LONG_PRESS_KEY_UP = 3; |
| /** |
| * Event for {@link #addKeyEventHandler}: fired when the {@link KeyEvent#KEYCODE_CALL} key is |
| * pressed down. |
| * |
| * If the key is released before the long-press timeout, |
| * {@link #KEY_EVENT_CALL_SHORT_PRESS_KEY_UP} will be fired. If the key is held past the |
| * long-press timeout, {@link #KEY_EVENT_CALL_LONG_PRESS_KEY_DOWN} will be fired, followed by |
| * {@link #KEY_EVENT_CALL_LONG_PRESS_KEY_UP}. |
| */ |
| public static final int KEY_EVENT_CALL_KEY_DOWN = 4; |
| /** |
| * Event for {@link #addKeyEventHandler}: fired when the {@link KeyEvent#KEYCODE_CALL} key is |
| * released after a short-press. |
| */ |
| public static final int KEY_EVENT_CALL_SHORT_PRESS_KEY_UP = 5; |
| /** |
| * Event for {@link #addKeyEventHandler}: fired when the {@link KeyEvent#KEYCODE_CALL} key is |
| * held down past the long-press timeout. |
| */ |
| public static final int KEY_EVENT_CALL_LONG_PRESS_KEY_DOWN = 6; |
| /** |
| * Event for {@link #addKeyEventHandler}: fired when the {@link KeyEvent#KEYCODE_CALL} key is |
| * released after a long-press. |
| */ |
| public static final int KEY_EVENT_CALL_LONG_PRESS_KEY_UP = 7; |
| |
| /** @hide */ |
| public static final int NUM_KEY_EVENTS = 8; |
| |
| /** @hide */ |
| @Retention(RetentionPolicy.SOURCE) |
| @IntDef(prefix = "KEY_EVENT_", value = { |
| KEY_EVENT_VOICE_SEARCH_KEY_DOWN, |
| KEY_EVENT_VOICE_SEARCH_SHORT_PRESS_KEY_UP, |
| KEY_EVENT_VOICE_SEARCH_LONG_PRESS_KEY_DOWN, |
| KEY_EVENT_VOICE_SEARCH_LONG_PRESS_KEY_UP, |
| KEY_EVENT_CALL_KEY_DOWN, |
| KEY_EVENT_CALL_SHORT_PRESS_KEY_UP, |
| KEY_EVENT_CALL_LONG_PRESS_KEY_DOWN, |
| KEY_EVENT_CALL_LONG_PRESS_KEY_UP, |
| }) |
| @Target({ElementType.TYPE_USE}) |
| public @interface KeyEventNum {} |
| |
| /** @hide */ |
| public static final int PROJECTION_AP_STARTED = 0; |
| /** @hide */ |
| public static final int PROJECTION_AP_STOPPED = 1; |
| /** @hide */ |
| public static final int PROJECTION_AP_FAILED = 2; |
| |
| private final ICarProjection mService; |
| private final Executor mHandlerExecutor; |
| |
| @GuardedBy("mLock") |
| private CarProjectionListener mListener; |
| @GuardedBy("mLock") |
| private int mVoiceSearchFilter; |
| private final ProjectionKeyEventHandler mLegacyListenerTranslator = |
| this::translateKeyEventToLegacyListener; |
| |
| private final ICarProjectionKeyEventHandlerImpl mBinderHandler = |
| new ICarProjectionKeyEventHandlerImpl(this); |
| |
| @GuardedBy("mLock") |
| private final Map<ProjectionKeyEventHandler, KeyEventHandlerRecord> mKeyEventHandlers = |
| new HashMap<>(); |
| @GuardedBy("mLock") |
| private BitSet mHandledEvents = new BitSet(); |
| |
| private ProjectionAccessPointCallbackProxy mProjectionAccessPointCallbackProxy; |
| |
| private final Set<ProjectionStatusListener> mProjectionStatusListeners = new LinkedHashSet<>(); |
| private CarProjectionStatusListenerImpl mCarProjectionStatusListener; |
| |
| // Only one access point proxy object per process. |
| private static final IBinder mAccessPointProxyToken = new Binder(); |
| |
| /** |
| * Interface to receive for projection status updates. |
| */ |
| public interface ProjectionStatusListener { |
| /** |
| * This method gets invoked if projection status has been changed. |
| * |
| * @param state - current projection state |
| * @param packageName - if projection is currently running either in the foreground or |
| * in the background this argument will contain its package name |
| * @param details - contains detailed information about all currently registered projection |
| * receivers. |
| */ |
| void onProjectionStatusChanged(@ProjectionState int state, @Nullable String packageName, |
| @NonNull List<ProjectionStatus> details); |
| } |
| |
| /** |
| * @hide |
| */ |
| public CarProjectionManager(Car car, IBinder service) { |
| super(car); |
| mService = ICarProjection.Stub.asInterface(service); |
| Handler handler = getEventHandler(); |
| mHandlerExecutor = handler::post; |
| } |
| |
| /** |
| * Compatibility with previous APIs due to typo |
| * @hide |
| */ |
| public void regsiterProjectionListener(CarProjectionListener listener, int voiceSearchFilter) { |
| registerProjectionListener(listener, voiceSearchFilter); |
| } |
| |
| /** |
| * Register listener to monitor projection. Only one listener can be registered and |
| * registering multiple times will lead into only the last listener to be active. |
| * @param listener |
| * @param voiceSearchFilter Flags of voice search requests to get notification. |
| */ |
| @RequiresPermission(Car.PERMISSION_CAR_PROJECTION) |
| public void registerProjectionListener(@NonNull CarProjectionListener listener, |
| int voiceSearchFilter) { |
| Preconditions.checkNotNull(listener, "listener cannot be null"); |
| synchronized (mLock) { |
| if (mListener == null || mVoiceSearchFilter != voiceSearchFilter) { |
| addKeyEventHandler( |
| translateVoiceSearchFilter(voiceSearchFilter), |
| mLegacyListenerTranslator); |
| } |
| mListener = listener; |
| mVoiceSearchFilter = voiceSearchFilter; |
| } |
| } |
| |
| /** |
| * Compatibility with previous APIs due to typo |
| * @hide |
| */ |
| public void unregsiterProjectionListener() { |
| unregisterProjectionListener(); |
| } |
| |
| /** |
| * Unregister listener and stop listening projection events. |
| */ |
| @RequiresPermission(Car.PERMISSION_CAR_PROJECTION) |
| public void unregisterProjectionListener() { |
| synchronized (mLock) { |
| removeKeyEventHandler(mLegacyListenerTranslator); |
| mListener = null; |
| mVoiceSearchFilter = 0; |
| } |
| } |
| |
| @SuppressWarnings("deprecation") |
| private static Set<Integer> translateVoiceSearchFilter(int voiceSearchFilter) { |
| Set<Integer> rv = new ArraySet<>(Integer.bitCount(voiceSearchFilter)); |
| int i = 0; |
| if ((voiceSearchFilter & PROJECTION_VOICE_SEARCH) != 0) { |
| rv.add(KEY_EVENT_VOICE_SEARCH_SHORT_PRESS_KEY_UP); |
| } |
| if ((voiceSearchFilter & PROJECTION_LONG_PRESS_VOICE_SEARCH) != 0) { |
| rv.add(KEY_EVENT_VOICE_SEARCH_LONG_PRESS_KEY_DOWN); |
| } |
| return rv; |
| } |
| |
| private void translateKeyEventToLegacyListener(@KeyEventNum int keyEvent) { |
| CarProjectionListener legacyListener; |
| boolean fromLongPress; |
| |
| synchronized (mLock) { |
| if (mListener == null) { |
| return; |
| } |
| legacyListener = mListener; |
| |
| if (keyEvent == KEY_EVENT_VOICE_SEARCH_SHORT_PRESS_KEY_UP) { |
| fromLongPress = false; |
| } else if (keyEvent == KEY_EVENT_VOICE_SEARCH_LONG_PRESS_KEY_DOWN) { |
| fromLongPress = true; |
| } else { |
| Log.e(TAG, "Unexpected key event " + keyEvent); |
| return; |
| } |
| } |
| |
| Log.d(TAG, "Voice assistant request, long-press = " + fromLongPress); |
| |
| legacyListener.onVoiceAssistantRequest(fromLongPress); |
| } |
| |
| /** |
| * Adds a {@link ProjectionKeyEventHandler} to be called for the given set of key events. |
| * |
| * If the given event handler is already registered, the event set and {@link Executor} for that |
| * event handler will be replaced with those provided. |
| * |
| * For any event with a defined event handler, the system will suppress its default behavior for |
| * that event, and call the event handler instead. (For instance, if an event handler is defined |
| * for {@link #KEY_EVENT_CALL_SHORT_PRESS_KEY_UP}, the system will not open the dialer when the |
| * {@link KeyEvent#KEYCODE_CALL CALL} key is short-pressed.) |
| * |
| * Callbacks on the event handler will be run on the {@link Handler} designated to run callbacks |
| * from {@link Car}. |
| * |
| * @param events The set of key events to which to subscribe. |
| * @param eventHandler The {@link ProjectionKeyEventHandler} to call when those events occur. |
| */ |
| @RequiresPermission(Car.PERMISSION_CAR_PROJECTION) |
| public void addKeyEventHandler( |
| @NonNull Set<@KeyEventNum Integer> events, |
| @NonNull ProjectionKeyEventHandler eventHandler) { |
| addKeyEventHandler(events, null, eventHandler); |
| } |
| |
| /** |
| * Adds a {@link ProjectionKeyEventHandler} to be called for the given set of key events. |
| * |
| * If the given event handler is already registered, the event set and {@link Executor} for that |
| * event handler will be replaced with those provided. |
| * |
| * For any event with a defined event handler, the system will suppress its default behavior for |
| * that event, and call the event handler instead. (For instance, if an event handler is defined |
| * for {@link #KEY_EVENT_CALL_SHORT_PRESS_KEY_UP}, the system will not open the dialer when the |
| * {@link KeyEvent#KEYCODE_CALL CALL} key is short-pressed.) |
| * |
| * Callbacks on the event handler will be run on the given {@link Executor}, or, if it is null, |
| * the {@link Handler} designated to run callbacks for {@link Car}. |
| * |
| * @param events The set of key events to which to subscribe. |
| * @param executor An {@link Executor} on which to run callbacks. |
| * @param eventHandler The {@link ProjectionKeyEventHandler} to call when those events occur. |
| */ |
| @RequiresPermission(Car.PERMISSION_CAR_PROJECTION) |
| public void addKeyEventHandler( |
| @NonNull Set<@KeyEventNum Integer> events, |
| @CallbackExecutor @Nullable Executor executor, |
| @NonNull ProjectionKeyEventHandler eventHandler) { |
| BitSet eventMask = new BitSet(); |
| for (int event : events) { |
| Preconditions.checkArgument(event >= 0 && event < NUM_KEY_EVENTS, "Invalid key event"); |
| eventMask.set(event); |
| } |
| |
| if (eventMask.isEmpty()) { |
| removeKeyEventHandler(eventHandler); |
| return; |
| } |
| |
| if (executor == null) { |
| executor = mHandlerExecutor; |
| } |
| |
| synchronized (mLock) { |
| KeyEventHandlerRecord record = mKeyEventHandlers.get(eventHandler); |
| if (record == null) { |
| record = new KeyEventHandlerRecord(executor, eventMask); |
| mKeyEventHandlers.put(eventHandler, record); |
| } else { |
| record.mExecutor = executor; |
| record.mSubscribedEvents = eventMask; |
| } |
| |
| updateHandledEventsLocked(); |
| } |
| } |
| |
| /** |
| * Removes a previously registered {@link ProjectionKeyEventHandler}. |
| * |
| * @param eventHandler The listener to remove. |
| */ |
| @RequiresPermission(Car.PERMISSION_CAR_PROJECTION) |
| public void removeKeyEventHandler(@NonNull ProjectionKeyEventHandler eventHandler) { |
| synchronized (mLock) { |
| KeyEventHandlerRecord record = mKeyEventHandlers.remove(eventHandler); |
| if (record != null) { |
| updateHandledEventsLocked(); |
| } |
| } |
| } |
| |
| @GuardedBy("mLock") |
| private void updateHandledEventsLocked() { |
| BitSet events = new BitSet(); |
| |
| for (KeyEventHandlerRecord record : mKeyEventHandlers.values()) { |
| events.or(record.mSubscribedEvents); |
| } |
| |
| if (events.equals(mHandledEvents)) { |
| // No changes. |
| return; |
| } |
| |
| try { |
| if (!events.isEmpty()) { |
| Log.d(TAG, "Registering handler with system for " + events); |
| byte[] eventMask = events.toByteArray(); |
| mService.registerKeyEventHandler(mBinderHandler, eventMask); |
| } else { |
| Log.d(TAG, "Unregistering handler with system"); |
| mService.unregisterKeyEventHandler(mBinderHandler); |
| } |
| } catch (RemoteException e) { |
| handleRemoteExceptionFromCarService(e); |
| return; |
| } |
| |
| mHandledEvents = events; |
| } |
| |
| /** |
| * Registers projection runner on projection start with projection service |
| * to create reverse binding. |
| * @param serviceIntent |
| */ |
| @RequiresPermission(Car.PERMISSION_CAR_PROJECTION) |
| public void registerProjectionRunner(@NonNull Intent serviceIntent) { |
| Preconditions.checkNotNull("serviceIntent cannot be null"); |
| synchronized (mLock) { |
| try { |
| mService.registerProjectionRunner(serviceIntent); |
| } catch (RemoteException e) { |
| handleRemoteExceptionFromCarService(e); |
| } |
| } |
| } |
| |
| /** |
| * Unregisters projection runner on projection stop with projection service to create |
| * reverse binding. |
| * @param serviceIntent |
| */ |
| @RequiresPermission(Car.PERMISSION_CAR_PROJECTION) |
| public void unregisterProjectionRunner(@NonNull Intent serviceIntent) { |
| Preconditions.checkNotNull("serviceIntent cannot be null"); |
| synchronized (mLock) { |
| try { |
| mService.unregisterProjectionRunner(serviceIntent); |
| } catch (RemoteException e) { |
| handleRemoteExceptionFromCarService(e); |
| } |
| } |
| } |
| |
| /** @hide */ |
| @Override |
| public void onCarDisconnected() { |
| // nothing to do |
| } |
| |
| /** |
| * Request to start Wi-Fi access point if it hasn't been started yet for wireless projection |
| * receiver app. |
| * |
| * <p>A process can have only one request to start an access point, subsequent call of this |
| * method will invalidate previous calls. |
| * |
| * @param callback to receive notifications when access point status changed for the request |
| */ |
| @RequiresPermission(Car.PERMISSION_CAR_PROJECTION) |
| public void startProjectionAccessPoint(@NonNull ProjectionAccessPointCallback callback) { |
| Preconditions.checkNotNull(callback, "callback cannot be null"); |
| synchronized (mLock) { |
| Looper looper = getEventHandler().getLooper(); |
| ProjectionAccessPointCallbackProxy proxy = |
| new ProjectionAccessPointCallbackProxy(this, looper, callback); |
| try { |
| mService.startProjectionAccessPoint(proxy.getMessenger(), mAccessPointProxyToken); |
| mProjectionAccessPointCallbackProxy = proxy; |
| } catch (RemoteException e) { |
| handleRemoteExceptionFromCarService(e); |
| } |
| } |
| } |
| |
| /** |
| * Returns a list of available Wi-Fi channels. A channel is specified as frequency in MHz, |
| * e.g. channel 1 will be represented as 2412 in the list. |
| * |
| * @param band one of the values from {@code android.net.wifi.WifiScanner#WIFI_BAND_*} |
| */ |
| @RequiresPermission(Car.PERMISSION_CAR_PROJECTION) |
| public @NonNull List<Integer> getAvailableWifiChannels(int band) { |
| try { |
| int[] channels = mService.getAvailableWifiChannels(band); |
| List<Integer> channelList = new ArrayList<>(channels.length); |
| for (int v : channels) { |
| channelList.add(v); |
| } |
| return channelList; |
| } catch (RemoteException e) { |
| return handleRemoteExceptionFromCarService(e, Collections.emptyList()); |
| } |
| } |
| |
| /** |
| * Stop Wi-Fi Access Point for wireless projection receiver app. |
| */ |
| @RequiresPermission(Car.PERMISSION_CAR_PROJECTION) |
| public void stopProjectionAccessPoint() { |
| ProjectionAccessPointCallbackProxy proxy; |
| synchronized (mLock) { |
| proxy = mProjectionAccessPointCallbackProxy; |
| mProjectionAccessPointCallbackProxy = null; |
| } |
| if (proxy == null) { |
| return; |
| } |
| |
| try { |
| mService.stopProjectionAccessPoint(mAccessPointProxyToken); |
| } catch (RemoteException e) { |
| handleRemoteExceptionFromCarService(e); |
| } |
| } |
| |
| /** |
| * Request to disconnect the given profile on the given device, and prevent it from reconnecting |
| * until either the request is released, or the process owning the given token dies. |
| * |
| * @param device The device on which to inhibit a profile. |
| * @param profile The {@link android.bluetooth.BluetoothProfile} to inhibit. |
| * @return True if the profile was successfully inhibited, false if an error occurred. |
| */ |
| @RequiresPermission(Car.PERMISSION_CAR_PROJECTION) |
| public boolean requestBluetoothProfileInhibit( |
| @NonNull BluetoothDevice device, int profile) { |
| Preconditions.checkNotNull(device, "device cannot be null"); |
| try { |
| return mService.requestBluetoothProfileInhibit(device, profile, mToken); |
| } catch (RemoteException e) { |
| return handleRemoteExceptionFromCarService(e, false); |
| } |
| } |
| |
| /** |
| * Release an inhibit request made by {@link #requestBluetoothProfileInhibit}, and reconnect the |
| * profile if no other inhibit requests are active. |
| * |
| * @param device The device on which to release the inhibit request. |
| * @param profile The profile on which to release the inhibit request. |
| * @return True if the request was released, false if an error occurred. |
| */ |
| @RequiresPermission(Car.PERMISSION_CAR_PROJECTION) |
| public boolean releaseBluetoothProfileInhibit(@NonNull BluetoothDevice device, int profile) { |
| Preconditions.checkNotNull(device, "device cannot be null"); |
| try { |
| return mService.releaseBluetoothProfileInhibit(device, profile, mToken); |
| } catch (RemoteException e) { |
| return handleRemoteExceptionFromCarService(e, false); |
| } |
| } |
| |
| /** |
| * Call this method to report projection status of your app. The aggregated status (from other |
| * projection apps if available) will be broadcasted to interested parties. |
| * |
| * @param status the reported status that will be distributed to the interested listeners |
| * |
| * @see #registerProjectionStatusListener(ProjectionStatusListener) |
| */ |
| @RequiresPermission(Car.PERMISSION_CAR_PROJECTION) |
| public void updateProjectionStatus(@NonNull ProjectionStatus status) { |
| Preconditions.checkNotNull(status, "status cannot be null"); |
| try { |
| mService.updateProjectionStatus(status, mToken); |
| } catch (RemoteException e) { |
| handleRemoteExceptionFromCarService(e); |
| } |
| } |
| |
| /** |
| * Register projection status listener. See {@link ProjectionStatusListener} for details. It is |
| * allowed to register multiple listeners. |
| * |
| * <p>Note: provided listener will be called immediately with the most recent status. |
| * |
| * @param listener the listener to receive notification for any projection status changes |
| */ |
| @RequiresPermission(Car.PERMISSION_CAR_PROJECTION_STATUS) |
| public void registerProjectionStatusListener(@NonNull ProjectionStatusListener listener) { |
| Preconditions.checkNotNull(listener, "listener cannot be null"); |
| synchronized (mLock) { |
| mProjectionStatusListeners.add(listener); |
| |
| if (mCarProjectionStatusListener == null) { |
| mCarProjectionStatusListener = new CarProjectionStatusListenerImpl(this); |
| try { |
| mService.registerProjectionStatusListener(mCarProjectionStatusListener); |
| } catch (RemoteException e) { |
| handleRemoteExceptionFromCarService(e); |
| } |
| } else { |
| // Already subscribed to Car Service, immediately notify listener with the current |
| // projection status in the event handler thread. |
| getEventHandler().post(() -> |
| listener.onProjectionStatusChanged( |
| mCarProjectionStatusListener.mCurrentState, |
| mCarProjectionStatusListener.mCurrentPackageName, |
| mCarProjectionStatusListener.mDetails)); |
| } |
| } |
| } |
| |
| /** |
| * Unregister provided listener from projection status notifications |
| * |
| * @param listener the listener for projection status notifications that was previously |
| * registered with {@link #unregisterProjectionStatusListener(ProjectionStatusListener)} |
| */ |
| @RequiresPermission(Car.PERMISSION_CAR_PROJECTION_STATUS) |
| public void unregisterProjectionStatusListener(@NonNull ProjectionStatusListener listener) { |
| Preconditions.checkNotNull(listener, "listener cannot be null"); |
| synchronized (mLock) { |
| if (!mProjectionStatusListeners.remove(listener) |
| || !mProjectionStatusListeners.isEmpty()) { |
| return; |
| } |
| unregisterProjectionStatusListenerFromCarServiceLocked(); |
| } |
| } |
| |
| private void unregisterProjectionStatusListenerFromCarServiceLocked() { |
| try { |
| mService.unregisterProjectionStatusListener(mCarProjectionStatusListener); |
| mCarProjectionStatusListener = null; |
| } catch (RemoteException e) { |
| handleRemoteExceptionFromCarService(e); |
| } |
| } |
| |
| private void handleProjectionStatusChanged(@ProjectionState int state, |
| String packageName, List<ProjectionStatus> details) { |
| List<ProjectionStatusListener> listeners; |
| synchronized (mLock) { |
| listeners = new ArrayList<>(mProjectionStatusListeners); |
| } |
| for (ProjectionStatusListener listener : listeners) { |
| listener.onProjectionStatusChanged(state, packageName, details); |
| } |
| } |
| |
| /** |
| * Returns {@link Bundle} object that contains customization for projection app. This bundle |
| * can be parsed using {@link ProjectionOptions}. |
| */ |
| @RequiresPermission(Car.PERMISSION_CAR_PROJECTION) |
| public @NonNull Bundle getProjectionOptions() { |
| try { |
| return mService.getProjectionOptions(); |
| } catch (RemoteException e) { |
| return handleRemoteExceptionFromCarService(e, Bundle.EMPTY); |
| } |
| } |
| |
| /** |
| * Callback class for applications to receive updates about the LocalOnlyHotspot status. |
| */ |
| public abstract static class ProjectionAccessPointCallback { |
| public static final int ERROR_NO_CHANNEL = 1; |
| public static final int ERROR_GENERIC = 2; |
| public static final int ERROR_INCOMPATIBLE_MODE = 3; |
| public static final int ERROR_TETHERING_DISALLOWED = 4; |
| |
| /** Called when access point started successfully. */ |
| public void onStarted(WifiConfiguration wifiConfiguration) {} |
| /** Called when access point is stopped. No events will be sent after that. */ |
| public void onStopped() {} |
| /** Called when access point failed to start. No events will be sent after that. */ |
| public void onFailed(int reason) {} |
| } |
| |
| /** |
| * Callback proxy for LocalOnlyHotspotCallback objects. |
| */ |
| private static class ProjectionAccessPointCallbackProxy { |
| private static final String LOG_PREFIX = |
| ProjectionAccessPointCallbackProxy.class.getSimpleName() + ": "; |
| |
| private final Handler mHandler; |
| private final WeakReference<CarProjectionManager> mCarProjectionManagerRef; |
| private final Messenger mMessenger; |
| |
| ProjectionAccessPointCallbackProxy(CarProjectionManager manager, Looper looper, |
| final ProjectionAccessPointCallback callback) { |
| mCarProjectionManagerRef = new WeakReference<>(manager); |
| |
| mHandler = new Handler(looper) { |
| @Override |
| public void handleMessage(Message msg) { |
| Log.d(TAG, LOG_PREFIX + "handle message what: " + msg.what + " msg: " + msg); |
| |
| CarProjectionManager manager = mCarProjectionManagerRef.get(); |
| if (manager == null) { |
| Log.w(TAG, LOG_PREFIX + "handle message post GC"); |
| return; |
| } |
| |
| switch (msg.what) { |
| case PROJECTION_AP_STARTED: |
| WifiConfiguration config = (WifiConfiguration) msg.obj; |
| if (config == null) { |
| Log.e(TAG, LOG_PREFIX + "config cannot be null."); |
| callback.onFailed(ProjectionAccessPointCallback.ERROR_GENERIC); |
| return; |
| } |
| callback.onStarted(config); |
| break; |
| case PROJECTION_AP_STOPPED: |
| Log.i(TAG, LOG_PREFIX + "hotspot stopped"); |
| callback.onStopped(); |
| break; |
| case PROJECTION_AP_FAILED: |
| int reasonCode = msg.arg1; |
| Log.w(TAG, LOG_PREFIX + "failed to start. reason: " |
| + reasonCode); |
| callback.onFailed(reasonCode); |
| break; |
| default: |
| Log.e(TAG, LOG_PREFIX + "unhandled message. type: " + msg.what); |
| } |
| } |
| }; |
| mMessenger = new Messenger(mHandler); |
| } |
| |
| Messenger getMessenger() { |
| return mMessenger; |
| } |
| } |
| |
| private static class ICarProjectionKeyEventHandlerImpl |
| extends ICarProjectionKeyEventHandler.Stub { |
| |
| private final WeakReference<CarProjectionManager> mManager; |
| |
| private ICarProjectionKeyEventHandlerImpl(CarProjectionManager manager) { |
| mManager = new WeakReference<>(manager); |
| } |
| |
| @Override |
| public void onKeyEvent(@KeyEventNum int event) { |
| Log.d(TAG, "Received projection key event " + event); |
| final CarProjectionManager manager = mManager.get(); |
| if (manager == null) { |
| return; |
| } |
| |
| List<Pair<ProjectionKeyEventHandler, Executor>> toDispatch = new ArrayList<>(); |
| synchronized (manager.mLock) { |
| for (Map.Entry<ProjectionKeyEventHandler, KeyEventHandlerRecord> entry : |
| manager.mKeyEventHandlers.entrySet()) { |
| if (entry.getValue().mSubscribedEvents.get(event)) { |
| toDispatch.add(Pair.create(entry.getKey(), entry.getValue().mExecutor)); |
| } |
| } |
| } |
| |
| for (Pair<ProjectionKeyEventHandler, Executor> entry : toDispatch) { |
| ProjectionKeyEventHandler listener = entry.first; |
| entry.second.execute(() -> listener.onKeyEvent(event)); |
| } |
| } |
| } |
| |
| private static class KeyEventHandlerRecord { |
| @NonNull Executor mExecutor; |
| @NonNull BitSet mSubscribedEvents; |
| |
| KeyEventHandlerRecord(@NonNull Executor executor, @NonNull BitSet subscribedEvents) { |
| mExecutor = executor; |
| mSubscribedEvents = subscribedEvents; |
| } |
| } |
| |
| private static class CarProjectionStatusListenerImpl |
| extends ICarProjectionStatusListener.Stub { |
| |
| private @ProjectionState int mCurrentState; |
| private @Nullable String mCurrentPackageName; |
| private List<ProjectionStatus> mDetails = new ArrayList<>(0); |
| |
| private final WeakReference<CarProjectionManager> mManagerRef; |
| |
| private CarProjectionStatusListenerImpl(CarProjectionManager mgr) { |
| mManagerRef = new WeakReference<>(mgr); |
| } |
| |
| @Override |
| public void onProjectionStatusChanged(int projectionState, |
| String packageName, |
| List<ProjectionStatus> details) { |
| CarProjectionManager mgr = mManagerRef.get(); |
| if (mgr != null) { |
| mgr.getEventHandler().post(() -> { |
| mCurrentState = projectionState; |
| mCurrentPackageName = packageName; |
| mDetails = Collections.unmodifiableList(details); |
| |
| mgr.handleProjectionStatusChanged(projectionState, packageName, mDetails); |
| }); |
| } |
| } |
| } |
| } |
