| /* |
| * Copyright (C) 2016 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 static android.hardware.input.InputManager.INJECT_INPUT_EVENT_MODE_ASYNC; |
| import static android.service.voice.VoiceInteractionSession.SHOW_SOURCE_PUSH_TO_TALK; |
| |
| import android.app.ActivityManager; |
| import android.car.input.CarInputHandlingService; |
| import android.car.input.CarInputHandlingService.InputFilter; |
| import android.car.input.ICarInputListener; |
| import android.content.ComponentName; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.ServiceConnection; |
| import android.hardware.input.InputManager; |
| import android.net.Uri; |
| import android.os.Binder; |
| import android.os.Bundle; |
| import android.os.IBinder; |
| import android.os.Parcel; |
| import android.os.RemoteException; |
| import android.os.SystemClock; |
| import android.os.UserHandle; |
| import android.provider.CallLog.Calls; |
| import android.telecom.TelecomManager; |
| import android.text.TextUtils; |
| import android.util.Log; |
| import android.view.KeyEvent; |
| |
| import com.android.car.hal.InputHalService; |
| import com.android.internal.app.AssistUtils; |
| import com.android.internal.app.IVoiceInteractionSessionShowCallback; |
| |
| import java.io.PrintWriter; |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.Map; |
| import java.util.Set; |
| |
| public class CarInputService implements CarServiceBase, InputHalService.InputListener { |
| |
| public interface KeyEventListener { |
| boolean onKeyEvent(KeyEvent event); |
| } |
| |
| private static final class KeyPressTimer { |
| private static final long LONG_PRESS_TIME_MS = 1000; |
| |
| private boolean mDown = false; |
| private long mDuration = -1; |
| |
| synchronized void keyDown() { |
| mDown = true; |
| mDuration = SystemClock.elapsedRealtime(); |
| } |
| |
| synchronized void keyUp() { |
| if (!mDown) { |
| throw new IllegalStateException("key can't go up without being down"); |
| } |
| mDuration = SystemClock.elapsedRealtime() - mDuration; |
| mDown = false; |
| } |
| |
| synchronized boolean isLongPress() { |
| if (mDown) { |
| throw new IllegalStateException("can't query press length during key down"); |
| } |
| return mDuration >= LONG_PRESS_TIME_MS; |
| } |
| } |
| |
| private IVoiceInteractionSessionShowCallback mShowCallback = |
| new IVoiceInteractionSessionShowCallback.Stub() { |
| @Override |
| public void onFailed() { |
| Log.w(CarLog.TAG_INPUT, "Failed to show VoiceInteractionSession"); |
| } |
| |
| @Override |
| public void onShown() { |
| if (DBG) { |
| Log.d(CarLog.TAG_INPUT, "IVoiceInteractionSessionShowCallback onShown()"); |
| } |
| } |
| }; |
| |
| private static final boolean DBG = false; |
| private static final String EXTRA_CAR_PUSH_TO_TALK = |
| "com.android.car.input.EXTRA_CAR_PUSH_TO_TALK"; |
| |
| private final Context mContext; |
| private final InputHalService mInputHalService; |
| private final TelecomManager mTelecomManager; |
| private final InputManager mInputManager; |
| private final AssistUtils mAssistUtils; |
| |
| private KeyEventListener mVoiceAssistantKeyListener; |
| private KeyEventListener mLongVoiceAssistantKeyListener; |
| |
| private final KeyPressTimer mVoiceKeyTimer = new KeyPressTimer(); |
| private final KeyPressTimer mCallKeyTimer = new KeyPressTimer(); |
| |
| private KeyEventListener mInstrumentClusterKeyListener; |
| |
| private ICarInputListener mCarInputListener; |
| private boolean mCarInputListenerBound = false; |
| private final Map<Integer, Set<Integer>> mHandledKeys = new HashMap<>(); |
| |
| private final Binder mCallback = new Binder() { |
| @Override |
| protected boolean onTransact(int code, Parcel data, Parcel reply, int flags) { |
| if (code == CarInputHandlingService.INPUT_CALLBACK_BINDER_CODE) { |
| data.setDataPosition(0); |
| InputFilter[] handledKeys = (InputFilter[]) data.createTypedArray( |
| InputFilter.CREATOR); |
| if (handledKeys != null) { |
| setHandledKeys(handledKeys); |
| } |
| return true; |
| } |
| return false; |
| } |
| }; |
| |
| private final ServiceConnection mInputServiceConnection = new ServiceConnection() { |
| @Override |
| public void onServiceConnected(ComponentName name, IBinder binder) { |
| if (DBG) { |
| Log.d(CarLog.TAG_INPUT, "onServiceConnected, name: " |
| + name + ", binder: " + binder); |
| } |
| mCarInputListener = ICarInputListener.Stub.asInterface(binder); |
| |
| try { |
| binder.linkToDeath(() -> CarServiceUtils.runOnMainSync(() -> { |
| Log.w(CarLog.TAG_INPUT, "Input service died. Trying to rebind..."); |
| mCarInputListener = null; |
| // Try to rebind with input service. |
| mCarInputListenerBound = bindCarInputService(); |
| }), 0); |
| } catch (RemoteException e) { |
| Log.e(CarLog.TAG_INPUT, e.getMessage(), e); |
| } |
| } |
| |
| @Override |
| public void onServiceDisconnected(ComponentName name) { |
| Log.d(CarLog.TAG_INPUT, "onServiceDisconnected, name: " + name); |
| mCarInputListener = null; |
| // Try to rebind with input service. |
| mCarInputListenerBound = bindCarInputService(); |
| } |
| }; |
| |
| public CarInputService(Context context, InputHalService inputHalService) { |
| mContext = context; |
| mInputHalService = inputHalService; |
| mTelecomManager = context.getSystemService(TelecomManager.class); |
| mInputManager = context.getSystemService(InputManager.class); |
| mAssistUtils = new AssistUtils(context); |
| } |
| |
| private synchronized void setHandledKeys(InputFilter[] handledKeys) { |
| mHandledKeys.clear(); |
| for (InputFilter handledKey : handledKeys) { |
| Set<Integer> displaySet = mHandledKeys.get(handledKey.mTargetDisplay); |
| if (displaySet == null) { |
| displaySet = new HashSet<Integer>(); |
| mHandledKeys.put(handledKey.mTargetDisplay, displaySet); |
| } |
| displaySet.add(handledKey.mKeyCode); |
| } |
| } |
| |
| /** |
| * Set listener for listening voice assistant key event. Setting to null stops listening. |
| * If listener is not set, default behavior will be done for short press. |
| * If listener is set, short key press will lead into calling the listener. |
| * @param listener |
| */ |
| public void setVoiceAssistantKeyListener(KeyEventListener listener) { |
| synchronized (this) { |
| mVoiceAssistantKeyListener = listener; |
| } |
| } |
| |
| /** |
| * Set listener for listening long voice assistant key event. Setting to null stops listening. |
| * If listener is not set, default behavior will be done for long press. |
| * If listener is set, short long press will lead into calling the listener. |
| * @param listener |
| */ |
| public void setLongVoiceAssistantKeyListener(KeyEventListener listener) { |
| synchronized (this) { |
| mLongVoiceAssistantKeyListener = listener; |
| } |
| } |
| |
| public void setInstrumentClusterKeyListener(KeyEventListener listener) { |
| synchronized (this) { |
| mInstrumentClusterKeyListener = listener; |
| } |
| } |
| |
| @Override |
| public void init() { |
| if (!mInputHalService.isKeyInputSupported()) { |
| Log.w(CarLog.TAG_INPUT, "Hal does not support key input."); |
| return; |
| } else if (DBG) { |
| Log.d(CarLog.TAG_INPUT, "Hal supports key input."); |
| } |
| |
| |
| mInputHalService.setInputListener(this); |
| mCarInputListenerBound = bindCarInputService(); |
| } |
| |
| @Override |
| public void release() { |
| synchronized (this) { |
| mVoiceAssistantKeyListener = null; |
| mLongVoiceAssistantKeyListener = null; |
| mInstrumentClusterKeyListener = null; |
| if (mCarInputListenerBound) { |
| mContext.unbindService(mInputServiceConnection); |
| mCarInputListenerBound = false; |
| } |
| } |
| } |
| |
| @Override |
| public void onKeyEvent(KeyEvent event, int targetDisplay) { |
| // Give a car specific input listener the opportunity to intercept any input from the car |
| if (mCarInputListener != null && isCustomEventHandler(event, targetDisplay)) { |
| try { |
| mCarInputListener.onKeyEvent(event, targetDisplay); |
| } catch (RemoteException e) { |
| Log.e(CarLog.TAG_INPUT, "Error while calling car input service", e); |
| } |
| // Custom input service handled the event, nothing more to do here. |
| return; |
| } |
| |
| // Special case key code that have special "long press" handling for automotive |
| switch (event.getKeyCode()) { |
| case KeyEvent.KEYCODE_VOICE_ASSIST: |
| handleVoiceAssistKey(event); |
| return; |
| case KeyEvent.KEYCODE_CALL: |
| handleCallKey(event); |
| return; |
| default: |
| break; |
| } |
| |
| // Allow specifically targeted keys to be routed to the cluster |
| if (targetDisplay == InputHalService.DISPLAY_INSTRUMENT_CLUSTER) { |
| handleInstrumentClusterKey(event); |
| } else { |
| handleMainDisplayKey(event); |
| } |
| } |
| |
| private synchronized boolean isCustomEventHandler(KeyEvent event, int targetDisplay) { |
| Set<Integer> displaySet = mHandledKeys.get(targetDisplay); |
| if (displaySet == null) { |
| return false; |
| } |
| return displaySet.contains(event.getKeyCode()); |
| } |
| |
| private void handleVoiceAssistKey(KeyEvent event) { |
| int action = event.getAction(); |
| if (action == KeyEvent.ACTION_DOWN) { |
| mVoiceKeyTimer.keyDown(); |
| } else if (action == KeyEvent.ACTION_UP) { |
| mVoiceKeyTimer.keyUp(); |
| final KeyEventListener listener; |
| |
| synchronized (this) { |
| listener = (mVoiceKeyTimer.isLongPress() |
| ? mLongVoiceAssistantKeyListener : mVoiceAssistantKeyListener); |
| } |
| |
| if (listener != null) { |
| listener.onKeyEvent(event); |
| } else { |
| launchDefaultVoiceAssistantHandler(); |
| } |
| } |
| } |
| |
| private void handleCallKey(KeyEvent event) { |
| int action = event.getAction(); |
| if (action == KeyEvent.ACTION_DOWN) { |
| mCallKeyTimer.keyDown(); |
| } else if (action == KeyEvent.ACTION_UP) { |
| mCallKeyTimer.keyUp(); |
| |
| // Handle a phone call regardless of press length. |
| if (mTelecomManager != null && mTelecomManager.isRinging()) { |
| Log.i(CarLog.TAG_INPUT, "call key while ringing. Answer the call!"); |
| mTelecomManager.acceptRingingCall(); |
| } else if (mCallKeyTimer.isLongPress()) { |
| dialLastCallHandler(); |
| } else { |
| launchDialerHandler(); |
| } |
| } |
| } |
| |
| private void launchDialerHandler() { |
| Log.i(CarLog.TAG_INPUT, "call key, launch dialer intent"); |
| Intent dialerIntent = new Intent(Intent.ACTION_DIAL); |
| mContext.startActivityAsUser(dialerIntent, null, UserHandle.CURRENT_OR_SELF); |
| } |
| |
| private void dialLastCallHandler() { |
| Log.i(CarLog.TAG_INPUT, "call key, dialing last call"); |
| |
| String lastNumber = Calls.getLastOutgoingCall(mContext); |
| if (lastNumber != null && !lastNumber.isEmpty()) { |
| Intent callLastNumberIntent = new Intent(Intent.ACTION_CALL) |
| .setData(Uri.fromParts("tel", lastNumber, null)) |
| .setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); |
| mContext.startActivityAsUser(callLastNumberIntent, null, UserHandle.CURRENT_OR_SELF); |
| } |
| } |
| |
| private void launchDefaultVoiceAssistantHandler() { |
| Log.i(CarLog.TAG_INPUT, "voice key, invoke AssistUtils"); |
| |
| if (mAssistUtils.getAssistComponentForUser(ActivityManager.getCurrentUser()) == null) { |
| Log.w(CarLog.TAG_INPUT, "Unable to retrieve assist component for current user"); |
| return; |
| } |
| |
| final Bundle args = new Bundle(); |
| args.putBoolean(EXTRA_CAR_PUSH_TO_TALK, true); |
| |
| mAssistUtils.showSessionForActiveService(args, |
| SHOW_SOURCE_PUSH_TO_TALK, mShowCallback, null /*activityToken*/); |
| } |
| |
| private void handleInstrumentClusterKey(KeyEvent event) { |
| KeyEventListener listener = null; |
| synchronized (this) { |
| listener = mInstrumentClusterKeyListener; |
| } |
| if (listener == null) { |
| return; |
| } |
| listener.onKeyEvent(event); |
| } |
| |
| private void handleMainDisplayKey(KeyEvent event) { |
| mInputManager.injectInputEvent(event, INJECT_INPUT_EVENT_MODE_ASYNC); |
| } |
| |
| @Override |
| public void dump(PrintWriter writer) { |
| writer.println("*Input Service*"); |
| writer.println("mCarInputListenerBound:" + mCarInputListenerBound); |
| writer.println("mCarInputListener:" + mCarInputListener); |
| } |
| |
| private boolean bindCarInputService() { |
| String carInputService = mContext.getString(R.string.inputService); |
| if (TextUtils.isEmpty(carInputService)) { |
| Log.i(CarLog.TAG_INPUT, "Custom input service was not configured"); |
| return false; |
| } |
| |
| Log.d(CarLog.TAG_INPUT, "bindCarInputService, component: " + carInputService); |
| |
| Intent intent = new Intent(); |
| Bundle extras = new Bundle(); |
| extras.putBinder(CarInputHandlingService.INPUT_CALLBACK_BINDER_KEY, mCallback); |
| intent.putExtras(extras); |
| intent.setComponent(ComponentName.unflattenFromString(carInputService)); |
| return mContext.bindService(intent, mInputServiceConnection, Context.BIND_AUTO_CREATE); |
| } |
| } |