| /* |
| * Copyright (C) 2014 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.hardware.soundtrigger; |
| |
| import android.annotation.UnsupportedAppUsage; |
| import android.os.Handler; |
| import android.os.Looper; |
| import android.os.Message; |
| |
| import java.lang.ref.WeakReference; |
| |
| /** |
| * The SoundTriggerModule provides APIs to control sound models and sound detection |
| * on a given sound trigger hardware module. |
| * |
| * @hide |
| */ |
| public class SoundTriggerModule { |
| @UnsupportedAppUsage |
| private long mNativeContext; |
| |
| @UnsupportedAppUsage |
| private int mId; |
| private NativeEventHandlerDelegate mEventHandlerDelegate; |
| |
| // to be kept in sync with core/jni/android_hardware_SoundTrigger.cpp |
| private static final int EVENT_RECOGNITION = 1; |
| private static final int EVENT_SERVICE_DIED = 2; |
| private static final int EVENT_SOUNDMODEL = 3; |
| private static final int EVENT_SERVICE_STATE_CHANGE = 4; |
| |
| SoundTriggerModule(int moduleId, SoundTrigger.StatusListener listener, Handler handler) { |
| mId = moduleId; |
| mEventHandlerDelegate = new NativeEventHandlerDelegate(listener, handler); |
| native_setup(SoundTrigger.getCurrentOpPackageName(), |
| new WeakReference<SoundTriggerModule>(this)); |
| } |
| private native void native_setup(String opPackageName, Object moduleThis); |
| |
| @Override |
| protected void finalize() { |
| native_finalize(); |
| } |
| private native void native_finalize(); |
| |
| /** |
| * Detach from this module. The {@link SoundTrigger.StatusListener} callback will not be called |
| * anymore and associated resources will be released. |
| * */ |
| @UnsupportedAppUsage |
| public native void detach(); |
| |
| /** |
| * Load a {@link SoundTrigger.SoundModel} to the hardware. A sound model must be loaded in |
| * order to start listening to a key phrase in this model. |
| * @param model The sound model to load. |
| * @param soundModelHandle an array of int where the sound model handle will be returned. |
| * @return - {@link SoundTrigger#STATUS_OK} in case of success |
| * - {@link SoundTrigger#STATUS_ERROR} in case of unspecified error |
| * - {@link SoundTrigger#STATUS_PERMISSION_DENIED} if the caller does not have |
| * system permission |
| * - {@link SoundTrigger#STATUS_NO_INIT} if the native service cannot be reached |
| * - {@link SoundTrigger#STATUS_BAD_VALUE} if parameters are invalid |
| * - {@link SoundTrigger#STATUS_DEAD_OBJECT} if the binder transaction to the native |
| * service fails |
| * - {@link SoundTrigger#STATUS_INVALID_OPERATION} if the call is out of sequence |
| */ |
| @UnsupportedAppUsage |
| public native int loadSoundModel(SoundTrigger.SoundModel model, int[] soundModelHandle); |
| |
| /** |
| * Unload a {@link SoundTrigger.SoundModel} and abort any pendiong recognition |
| * @param soundModelHandle The sound model handle |
| * @return - {@link SoundTrigger#STATUS_OK} in case of success |
| * - {@link SoundTrigger#STATUS_ERROR} in case of unspecified error |
| * - {@link SoundTrigger#STATUS_PERMISSION_DENIED} if the caller does not have |
| * system permission |
| * - {@link SoundTrigger#STATUS_NO_INIT} if the native service cannot be reached |
| * - {@link SoundTrigger#STATUS_BAD_VALUE} if the sound model handle is invalid |
| * - {@link SoundTrigger#STATUS_DEAD_OBJECT} if the binder transaction to the native |
| * service fails |
| */ |
| @UnsupportedAppUsage |
| public native int unloadSoundModel(int soundModelHandle); |
| |
| /** |
| * Start listening to all key phrases in a {@link SoundTrigger.SoundModel}. |
| * Recognition must be restarted after each callback (success or failure) received on |
| * the {@link SoundTrigger.StatusListener}. |
| * @param soundModelHandle The sound model handle to start listening to |
| * @param config contains configuration information for this recognition request: |
| * recognition mode, keyphrases, users, minimum confidence levels... |
| * @return - {@link SoundTrigger#STATUS_OK} in case of success |
| * - {@link SoundTrigger#STATUS_ERROR} in case of unspecified error |
| * - {@link SoundTrigger#STATUS_PERMISSION_DENIED} if the caller does not have |
| * system permission |
| * - {@link SoundTrigger#STATUS_NO_INIT} if the native service cannot be reached |
| * - {@link SoundTrigger#STATUS_BAD_VALUE} if the sound model handle is invalid |
| * - {@link SoundTrigger#STATUS_DEAD_OBJECT} if the binder transaction to the native |
| * service fails |
| * - {@link SoundTrigger#STATUS_INVALID_OPERATION} if the call is out of sequence |
| */ |
| @UnsupportedAppUsage |
| public native int startRecognition(int soundModelHandle, SoundTrigger.RecognitionConfig config); |
| |
| /** |
| * Stop listening to all key phrases in a {@link SoundTrigger.SoundModel} |
| * @param soundModelHandle The sound model handle to stop listening to |
| * @return - {@link SoundTrigger#STATUS_OK} in case of success |
| * - {@link SoundTrigger#STATUS_ERROR} in case of unspecified error |
| * - {@link SoundTrigger#STATUS_PERMISSION_DENIED} if the caller does not have |
| * system permission |
| * - {@link SoundTrigger#STATUS_NO_INIT} if the native service cannot be reached |
| * - {@link SoundTrigger#STATUS_BAD_VALUE} if the sound model handle is invalid |
| * - {@link SoundTrigger#STATUS_DEAD_OBJECT} if the binder transaction to the native |
| * service fails |
| * - {@link SoundTrigger#STATUS_INVALID_OPERATION} if the call is out of sequence |
| */ |
| @UnsupportedAppUsage |
| public native int stopRecognition(int soundModelHandle); |
| |
| /** |
| * Get the current state of a {@link SoundTrigger.SoundModel}. |
| * The state will be returned asynchronously as a {@link SoundTrigger#RecognitionEvent} |
| * in the callback registered in the {@link SoundTrigger.startRecognition} method. |
| * @param soundModelHandle The sound model handle indicating which model's state to return |
| * @return - {@link SoundTrigger#STATUS_OK} in case of success |
| * - {@link SoundTrigger#STATUS_ERROR} in case of unspecified error |
| * - {@link SoundTrigger#STATUS_PERMISSION_DENIED} if the caller does not have |
| * system permission |
| * - {@link SoundTrigger#STATUS_NO_INIT} if the native service cannot be reached |
| * - {@link SoundTrigger#STATUS_BAD_VALUE} if the sound model handle is invalid |
| * - {@link SoundTrigger#STATUS_DEAD_OBJECT} if the binder transaction to the native |
| * service fails |
| * - {@link SoundTrigger#STATUS_INVALID_OPERATION} if the call is out of sequence |
| */ |
| public native int getModelState(int soundModelHandle); |
| |
| private class NativeEventHandlerDelegate { |
| private final Handler mHandler; |
| |
| NativeEventHandlerDelegate(final SoundTrigger.StatusListener listener, |
| Handler handler) { |
| // find the looper for our new event handler |
| Looper looper; |
| if (handler != null) { |
| looper = handler.getLooper(); |
| } else { |
| looper = Looper.getMainLooper(); |
| } |
| |
| // construct the event handler with this looper |
| if (looper != null) { |
| // implement the event handler delegate |
| mHandler = new Handler(looper) { |
| @Override |
| public void handleMessage(Message msg) { |
| switch(msg.what) { |
| case EVENT_RECOGNITION: |
| if (listener != null) { |
| listener.onRecognition( |
| (SoundTrigger.RecognitionEvent)msg.obj); |
| } |
| break; |
| case EVENT_SOUNDMODEL: |
| if (listener != null) { |
| listener.onSoundModelUpdate( |
| (SoundTrigger.SoundModelEvent)msg.obj); |
| } |
| break; |
| case EVENT_SERVICE_STATE_CHANGE: |
| if (listener != null) { |
| listener.onServiceStateChange(msg.arg1); |
| } |
| break; |
| case EVENT_SERVICE_DIED: |
| if (listener != null) { |
| listener.onServiceDied(); |
| } |
| break; |
| default: |
| break; |
| } |
| } |
| }; |
| } else { |
| mHandler = null; |
| } |
| } |
| |
| Handler handler() { |
| return mHandler; |
| } |
| } |
| |
| @SuppressWarnings("unused") |
| @UnsupportedAppUsage |
| private static void postEventFromNative(Object module_ref, |
| int what, int arg1, int arg2, Object obj) { |
| SoundTriggerModule module = (SoundTriggerModule)((WeakReference)module_ref).get(); |
| if (module == null) { |
| return; |
| } |
| |
| NativeEventHandlerDelegate delegate = module.mEventHandlerDelegate; |
| if (delegate != null) { |
| Handler handler = delegate.handler(); |
| if (handler != null) { |
| Message m = handler.obtainMessage(what, arg1, arg2, obj); |
| handler.sendMessage(m); |
| } |
| } |
| } |
| } |