| /* |
| * 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 com.android.car; |
| |
| import android.car.Car; |
| import android.car.hardware.hvac.CarHvacEvent; |
| import android.car.hardware.CarPropertyConfig; |
| import android.car.hardware.CarPropertyValue; |
| import android.car.hardware.hvac.ICarHvac; |
| import android.car.hardware.hvac.ICarHvacEventListener; |
| import android.content.Context; |
| import android.os.IBinder; |
| import android.os.RemoteException; |
| import android.util.Log; |
| |
| import com.android.car.hal.HvacHalService; |
| import com.android.car.hal.VehicleHal; |
| |
| import java.io.PrintWriter; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| |
| public class CarHvacService extends ICarHvac.Stub |
| implements CarServiceBase, HvacHalService.HvacHalListener { |
| public static final boolean DBG = true; |
| public static final String TAG = CarLog.TAG_HVAC + ".CarHvacService"; |
| |
| private HvacHalService mHvacHal; |
| private final Map<IBinder, ICarHvacEventListener> mListenersMap = new HashMap<>(); |
| private final Map<IBinder, HvacDeathRecipient> mDeathRecipientMap = new HashMap<>(); |
| private final Context mContext; |
| |
| public CarHvacService(Context context) { |
| mHvacHal = VehicleHal.getInstance().getHvacHal(); |
| mContext = context; |
| } |
| |
| class HvacDeathRecipient implements IBinder.DeathRecipient { |
| private static final String TAG = CarHvacService.TAG + ".HvacDeathRecipient"; |
| private IBinder mListenerBinder; |
| |
| HvacDeathRecipient(IBinder listenerBinder) { |
| mListenerBinder = listenerBinder; |
| } |
| |
| /** |
| * Client died. Remove the listener from HAL service and unregister if this is the last |
| * client. |
| */ |
| @Override |
| public void binderDied() { |
| if (DBG) { |
| Log.d(TAG, "binderDied " + mListenerBinder); |
| } |
| CarHvacService.this.unregisterListenerLocked(mListenerBinder); |
| } |
| |
| void release() { |
| mListenerBinder.unlinkToDeath(this, 0); |
| } |
| } |
| |
| @Override |
| public synchronized void init() { |
| } |
| |
| @Override |
| public synchronized void release() { |
| for (HvacDeathRecipient recipient : mDeathRecipientMap.values()) { |
| recipient.release(); |
| } |
| mDeathRecipientMap.clear(); |
| mListenersMap.clear(); |
| } |
| |
| @Override |
| public void dump(PrintWriter writer) { |
| // TODO |
| } |
| |
| @Override |
| public synchronized void registerListener(ICarHvacEventListener listener) { |
| if (DBG) { |
| Log.d(TAG, "registerListener"); |
| } |
| ICarImpl.assertHvacPermission(mContext); |
| if (listener == null) { |
| Log.e(TAG, "registerListener: Listener is null."); |
| throw new IllegalArgumentException("listener cannot be null."); |
| } |
| |
| IBinder listenerBinder = listener.asBinder(); |
| if (mListenersMap.containsKey(listenerBinder)) { |
| // Already registered, nothing to do. |
| return; |
| } |
| |
| HvacDeathRecipient deathRecipient = new HvacDeathRecipient(listenerBinder); |
| try { |
| listenerBinder.linkToDeath(deathRecipient, 0); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Failed to link death for recipient. " + e); |
| throw new IllegalStateException(Car.CAR_NOT_CONNECTED_EXCEPTION_MSG); |
| } |
| mDeathRecipientMap.put(listenerBinder, deathRecipient); |
| |
| if (mListenersMap.isEmpty()) { |
| mHvacHal.setListener(this); |
| } |
| |
| mListenersMap.put(listenerBinder, listener); |
| } |
| |
| @Override |
| public synchronized void unregisterListener(ICarHvacEventListener listener) { |
| if (DBG) { |
| Log.d(TAG, "unregisterListener"); |
| } |
| ICarImpl.assertHvacPermission(mContext); |
| if (listener == null) { |
| Log.e(TAG, "unregisterListener: Listener is null."); |
| throw new IllegalArgumentException("Listener is null"); |
| } |
| |
| IBinder listenerBinder = listener.asBinder(); |
| if (!mListenersMap.containsKey(listenerBinder)) { |
| Log.e(TAG, "unregisterListener: Listener was not previously registered."); |
| } |
| unregisterListenerLocked(listenerBinder); |
| } |
| |
| // Removes the listenerBinder from the current state. |
| // The function assumes that the binder will exist both in listeners and death recipients list. |
| private void unregisterListenerLocked(IBinder listenerBinder) { |
| Object status = mListenersMap.remove(listenerBinder); |
| |
| if (status != null) { |
| mDeathRecipientMap.get(listenerBinder).release(); |
| mDeathRecipientMap.remove(listenerBinder); |
| } |
| |
| if (mListenersMap.isEmpty()) { |
| mHvacHal.setListener(null); |
| } |
| } |
| |
| @Override |
| public synchronized List<CarPropertyConfig> getHvacProperties() { |
| ICarImpl.assertHvacPermission(mContext); |
| return mHvacHal.getHvacProperties(); |
| } |
| |
| @Override |
| public synchronized CarPropertyValue getProperty(int prop, int zone) { |
| ICarImpl.assertHvacPermission(mContext); |
| return mHvacHal.getHvacProperty(prop, zone); |
| } |
| |
| @Override |
| public synchronized void setProperty(CarPropertyValue prop) { |
| ICarImpl.assertHvacPermission(mContext); |
| mHvacHal.setHvacProperty(prop); |
| } |
| |
| // Implement HvacHalListener interface |
| @Override |
| public synchronized void onPropertyChange(CarHvacEvent event) { |
| for (ICarHvacEventListener l : mListenersMap.values()) { |
| try { |
| l.onEvent(event); |
| } catch (RemoteException ex) { |
| // If we could not send a record, its likely the connection snapped. Let the binder |
| // death handle the situation. |
| Log.e(TAG, "onEvent calling failed: " + ex); |
| } |
| } |
| } |
| |
| @Override |
| public synchronized void onError(int zone, int property) { |
| // TODO: |
| } |
| } |