| /* |
| * Copyright (C) 2023 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.Nullable; |
| import android.media.soundtrigger.Phrase; |
| import android.media.soundtrigger.RecognitionConfig; |
| import android.media.soundtrigger.SoundModel; |
| import android.media.soundtrigger_middleware.IInjectGlobalEvent; |
| import android.media.soundtrigger_middleware.IInjectModelEvent; |
| import android.media.soundtrigger_middleware.IInjectRecognitionEvent; |
| import android.media.soundtrigger_middleware.ISoundTriggerInjection; |
| import android.os.IBinder; |
| import android.os.RemoteException; |
| import android.util.Slog; |
| |
| import com.android.internal.annotations.GuardedBy; |
| |
| import java.util.Objects; |
| |
| /** |
| * Service side of the injection interface which enforces a single client. |
| * Essentially a facade that presents an ever-present, single injection client to the fake STHAL. |
| * Proxies a binder interface, but should never be called as such. |
| * @hide |
| */ |
| |
| public class SoundTriggerInjection implements ISoundTriggerInjection, IBinder.DeathRecipient { |
| |
| private static final String TAG = "SoundTriggerInjection"; |
| |
| private final Object mClientLock = new Object(); |
| @GuardedBy("mClientLock") |
| private ISoundTriggerInjection mClient = null; |
| @GuardedBy("mClientLock") |
| private IInjectGlobalEvent mGlobalEventInjection = null; |
| |
| /** |
| * Register a remote injection client. |
| * @param client - The injection client to register |
| */ |
| public void registerClient(ISoundTriggerInjection client) { |
| synchronized (mClientLock) { |
| Objects.requireNonNull(client); |
| if (mClient != null) { |
| try { |
| mClient.onPreempted(); |
| } catch (RemoteException e) { |
| Slog.e(TAG, "RemoteException when handling preemption", e); |
| } |
| mClient.asBinder().unlinkToDeath(this, 0); |
| } |
| mClient = client; |
| // Register cached global event injection interfaces, |
| // in case our client missed them. |
| try { |
| mClient.asBinder().linkToDeath(this, 0); |
| if (mGlobalEventInjection != null) { |
| mClient.registerGlobalEventInjection(mGlobalEventInjection); |
| } |
| } catch (RemoteException e) { |
| mClient = null; |
| } |
| |
| } |
| } |
| |
| @Override |
| public void binderDied() { |
| Slog.wtf(TAG, "Binder died without params"); |
| } |
| |
| // If the binder has died, clear out mClient. |
| @Override |
| public void binderDied(IBinder who) { |
| synchronized (mClientLock) { |
| if (mClient != null && who == mClient.asBinder()) { |
| mClient = null; |
| } |
| } |
| } |
| |
| @Override |
| public void registerGlobalEventInjection(IInjectGlobalEvent globalInjection) { |
| synchronized (mClientLock) { |
| // Cache for late attaching clients |
| mGlobalEventInjection = globalInjection; |
| if (mClient == null) return; |
| try { |
| mClient.registerGlobalEventInjection(mGlobalEventInjection); |
| } catch (RemoteException e) { |
| mClient = null; |
| } |
| } |
| } |
| |
| @Override |
| public void onRestarted(IInjectGlobalEvent globalSession) { |
| synchronized (mClientLock) { |
| if (mClient == null) return; |
| try { |
| mClient.onRestarted(globalSession); |
| } catch (RemoteException e) { |
| mClient = null; |
| } |
| } |
| } |
| |
| @Override |
| public void onFrameworkDetached(IInjectGlobalEvent globalSession) { |
| synchronized (mClientLock) { |
| if (mClient == null) return; |
| try { |
| mClient.onFrameworkDetached(globalSession); |
| } catch (RemoteException e) { |
| mClient = null; |
| } |
| } |
| } |
| |
| @Override |
| public void onClientAttached(IBinder token, IInjectGlobalEvent globalSession) { |
| synchronized (mClientLock) { |
| if (mClient == null) return; |
| try { |
| mClient.onClientAttached(token, globalSession); |
| } catch (RemoteException e) { |
| mClient = null; |
| } |
| } |
| } |
| |
| @Override |
| public void onClientDetached(IBinder token) { |
| synchronized (mClientLock) { |
| if (mClient == null) return; |
| try { |
| mClient.onClientDetached(token); |
| } catch (RemoteException e) { |
| mClient = null; |
| } |
| } |
| } |
| |
| @Override |
| public void onSoundModelLoaded(SoundModel model, @Nullable Phrase[] phrases, |
| IInjectModelEvent modelInjection, IInjectGlobalEvent globalSession) { |
| synchronized (mClientLock) { |
| if (mClient == null) return; |
| try { |
| mClient.onSoundModelLoaded(model, phrases, modelInjection, globalSession); |
| } catch (RemoteException e) { |
| mClient = null; |
| } |
| } |
| } |
| |
| @Override |
| public void onParamSet(/** ModelParameter **/ int modelParam, int value, |
| IInjectModelEvent modelSession) { |
| synchronized (mClientLock) { |
| if (mClient == null) return; |
| try { |
| mClient.onParamSet(modelParam, value, modelSession); |
| } catch (RemoteException e) { |
| mClient = null; |
| } |
| } |
| } |
| |
| @Override |
| public void onRecognitionStarted(int audioSessionToken, RecognitionConfig config, |
| IInjectRecognitionEvent recognitionInjection, IInjectModelEvent modelSession) { |
| synchronized (mClientLock) { |
| if (mClient == null) return; |
| try { |
| mClient.onRecognitionStarted(audioSessionToken, config, |
| recognitionInjection, modelSession); |
| } catch (RemoteException e) { |
| mClient = null; |
| } |
| } |
| } |
| |
| @Override |
| public void onRecognitionStopped(IInjectRecognitionEvent recognitionSession) { |
| synchronized (mClientLock) { |
| if (mClient == null) return; |
| try { |
| mClient.onRecognitionStopped(recognitionSession); |
| } catch (RemoteException e) { |
| mClient = null; |
| } |
| } |
| } |
| |
| @Override |
| public void onSoundModelUnloaded(IInjectModelEvent modelSession) { |
| synchronized (mClientLock) { |
| if (mClient == null) return; |
| try { |
| mClient.onSoundModelUnloaded(modelSession); |
| } catch (RemoteException e) { |
| mClient = null; |
| } |
| } |
| } |
| |
| @Override |
| public void onPreempted() { |
| // We are the service, so we can't be preempted. |
| Slog.wtf(TAG, "Unexpected preempted!"); |
| } |
| |
| @Override |
| public IBinder asBinder() { |
| // This class is not a real binder object |
| Slog.wtf(TAG, "Unexpected asBinder!"); |
| throw new UnsupportedOperationException("Calling asBinder on a fake binder object"); |
| } |
| |
| } |