| /* |
| * Copyright (C) 2020 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.server.soundtrigger_middleware; |
| |
| import android.annotation.NonNull; |
| import android.hardware.soundtrigger.V2_1.ISoundTriggerHw; |
| import android.hardware.soundtrigger.V2_3.ModelParameterRange; |
| import android.hardware.soundtrigger.V2_3.Properties; |
| import android.hardware.soundtrigger.V2_3.RecognitionConfig; |
| import android.os.IHwBinder; |
| import android.os.RemoteException; |
| import android.os.SystemProperties; |
| import android.util.Log; |
| |
| import java.util.Objects; |
| import java.util.Timer; |
| import java.util.TimerTask; |
| |
| /** |
| * An {@link ISoundTriggerHw2} decorator that would enforce deadlines on all calls and reboot the |
| * HAL whenever they expire. |
| */ |
| public class SoundTriggerHw2Watchdog implements ISoundTriggerHw2 { |
| private static final long TIMEOUT_MS = 3000; |
| private static final String TAG = "SoundTriggerHw2Watchdog"; |
| |
| private final @NonNull |
| ISoundTriggerHw2 mUnderlying; |
| private final @NonNull |
| Timer mTimer; |
| |
| public SoundTriggerHw2Watchdog(@NonNull ISoundTriggerHw2 underlying) { |
| mUnderlying = Objects.requireNonNull(underlying); |
| mTimer = new Timer("SoundTriggerHw2Watchdog"); |
| } |
| |
| @Override |
| public Properties getProperties() { |
| try (Watchdog ignore = new Watchdog()) { |
| return mUnderlying.getProperties(); |
| } |
| } |
| |
| @Override |
| public int loadSoundModel(ISoundTriggerHw.SoundModel soundModel, Callback callback, |
| int cookie) { |
| try (Watchdog ignore = new Watchdog()) { |
| return mUnderlying.loadSoundModel(soundModel, callback, cookie); |
| } |
| } |
| |
| @Override |
| public int loadPhraseSoundModel(ISoundTriggerHw.PhraseSoundModel soundModel, Callback callback, |
| int cookie) { |
| try (Watchdog ignore = new Watchdog()) { |
| return mUnderlying.loadPhraseSoundModel(soundModel, callback, cookie); |
| } |
| } |
| |
| @Override |
| public void unloadSoundModel(int modelHandle) { |
| try (Watchdog ignore = new Watchdog()) { |
| mUnderlying.unloadSoundModel(modelHandle); |
| } |
| } |
| |
| @Override |
| public void stopRecognition(int modelHandle) { |
| try (Watchdog ignore = new Watchdog()) { |
| mUnderlying.stopRecognition(modelHandle); |
| } |
| } |
| |
| @Override |
| public void stopAllRecognitions() { |
| try (Watchdog ignore = new Watchdog()) { |
| mUnderlying.stopAllRecognitions(); |
| } |
| } |
| |
| @Override |
| public void startRecognition(int modelHandle, RecognitionConfig config, Callback callback, |
| int cookie) { |
| try (Watchdog ignore = new Watchdog()) { |
| mUnderlying.startRecognition(modelHandle, config, callback, cookie); |
| } |
| } |
| |
| @Override |
| public void getModelState(int modelHandle) { |
| try (Watchdog ignore = new Watchdog()) { |
| mUnderlying.getModelState(modelHandle); |
| } |
| } |
| |
| @Override |
| public int getModelParameter(int modelHandle, int param) { |
| try (Watchdog ignore = new Watchdog()) { |
| return mUnderlying.getModelParameter(modelHandle, param); |
| } |
| } |
| |
| @Override |
| public void setModelParameter(int modelHandle, int param, int value) { |
| try (Watchdog ignore = new Watchdog()) { |
| mUnderlying.setModelParameter(modelHandle, param, value); |
| } |
| } |
| |
| @Override |
| public ModelParameterRange queryParameter(int modelHandle, int param) { |
| try (Watchdog ignore = new Watchdog()) { |
| return mUnderlying.queryParameter(modelHandle, param); |
| } |
| } |
| |
| @Override |
| public boolean linkToDeath(IHwBinder.DeathRecipient recipient, long cookie) { |
| return mUnderlying.linkToDeath(recipient, cookie); |
| } |
| |
| @Override |
| public boolean unlinkToDeath(IHwBinder.DeathRecipient recipient) { |
| return mUnderlying.unlinkToDeath(recipient); |
| } |
| |
| @Override |
| public String interfaceDescriptor() throws RemoteException { |
| return mUnderlying.interfaceDescriptor(); |
| } |
| |
| private static void rebootHal() { |
| // This property needs to be defined in an init.rc script and trigger a HAL reboot. |
| SystemProperties.set("sys.audio.restart.hal", "1"); |
| } |
| |
| private class Watchdog implements AutoCloseable { |
| private final @NonNull |
| TimerTask mTask; |
| // This exception is used merely for capturing a stack trace at the time of creation. |
| private final @NonNull |
| Exception mException = new Exception(); |
| |
| Watchdog() { |
| mTask = new TimerTask() { |
| @Override |
| public void run() { |
| Log.e(TAG, "HAL deadline expired. Rebooting.", mException); |
| rebootHal(); |
| } |
| }; |
| mTimer.schedule(mTask, TIMEOUT_MS); |
| } |
| |
| @Override |
| public void close() { |
| mTask.cancel(); |
| } |
| } |
| } |