| /** |
| * 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 com.android.server; |
| |
| import android.annotation.NonNull; |
| import android.annotation.Nullable; |
| import android.hardware.soundtrigger.IRecognitionStatusCallback; |
| import android.hardware.soundtrigger.ModelParams; |
| import android.hardware.soundtrigger.SoundTrigger; |
| import android.hardware.soundtrigger.SoundTrigger.Keyphrase; |
| import android.hardware.soundtrigger.SoundTrigger.KeyphraseSoundModel; |
| import android.hardware.soundtrigger.SoundTrigger.ModelParamRange; |
| import android.hardware.soundtrigger.SoundTrigger.ModuleProperties; |
| import android.hardware.soundtrigger.SoundTrigger.RecognitionConfig; |
| import android.media.permission.Identity; |
| import android.os.IBinder; |
| |
| import java.io.FileDescriptor; |
| import java.io.PrintWriter; |
| import java.util.List; |
| |
| /** |
| * Provides a local service for managing voice-related recoginition models. This is primarily used |
| * by the {@code VoiceInteractionManagerService}. |
| */ |
| public interface SoundTriggerInternal { |
| /** |
| * Return codes for {@link Session#startRecognition(int, KeyphraseSoundModel, |
| * IRecognitionStatusCallback, RecognitionConfig)}, |
| * {@link Session#stopRecognition(int, IRecognitionStatusCallback)} |
| */ |
| int STATUS_ERROR = SoundTrigger.STATUS_ERROR; |
| int STATUS_OK = SoundTrigger.STATUS_OK; |
| |
| // Attach to a specific underlying STModule |
| /** |
| * Attach to a specific underlying STModule. |
| * @param client - Binder token representing the app client for death notifications |
| * @param underlyingModule - Properties of the underlying STModule to attach to |
| * @param isTrusted - {@code true} if callbacks will be appropriately AppOps attributed by |
| * a trusted component prior to delivery to the ultimate client. |
| */ |
| Session attach(@NonNull IBinder client, ModuleProperties underlyingModule, boolean isTrusted); |
| |
| // Enumerate possible STModules to attach to |
| List<ModuleProperties> listModuleProperties(Identity originatorIdentity); |
| |
| interface Session { |
| /** |
| * Starts recognition for the given keyphraseId. |
| * |
| * @param keyphraseId The identifier of the keyphrase for which |
| * the recognition is to be started. |
| * @param soundModel The sound model to use for recognition. |
| * @param listener The listener for the recognition events related to the given |
| * keyphrase. |
| * @param runInBatterySaverMode flag that indicates whether the recognition should continue |
| * after battery saver mode is enabled. |
| * @return One of {@link #STATUS_ERROR} or {@link #STATUS_OK}. |
| */ |
| int startRecognition(int keyphraseId, KeyphraseSoundModel soundModel, |
| IRecognitionStatusCallback listener, RecognitionConfig recognitionConfig, |
| boolean runInBatterySaverMode); |
| |
| /** |
| * Stops recognition for the given {@link Keyphrase} if a recognition is |
| * currently active. |
| * |
| * @param keyphraseId The identifier of the keyphrase for which |
| * the recognition is to be stopped. |
| * @param listener The listener for the recognition events related to the given |
| * keyphrase. |
| * @return One of {@link #STATUS_ERROR} or {@link #STATUS_OK}. |
| */ |
| int stopRecognition(int keyphraseId, IRecognitionStatusCallback listener); |
| |
| ModuleProperties getModuleProperties(); |
| |
| /** |
| * Set a model specific {@link ModelParams} with the given value. This |
| * parameter will keep its value for the duration the model is loaded regardless of starting |
| * and |
| * stopping recognition. Once the model is unloaded, the value will be lost. |
| * {@link #queryParameter} should be checked first before calling this |
| * method. |
| * |
| * @param keyphraseId The identifier of the keyphrase for which |
| * to modify model parameters |
| * @param modelParam {@link ModelParams} |
| * @param value Value to set |
| * @return - {@link SoundTrigger#STATUS_OK} in case of success |
| * - {@link SoundTrigger#STATUS_NO_INIT} if the native service cannot be reached |
| * - {@link SoundTrigger#STATUS_BAD_VALUE} invalid input parameter |
| * - {@link SoundTrigger#STATUS_INVALID_OPERATION} if the call is out of sequence or |
| * if API is not supported by HAL |
| */ |
| int setParameter(int keyphraseId, @ModelParams int modelParam, int value); |
| |
| /** |
| * Get a model specific {@link ModelParams}. This parameter will keep its value |
| * for the duration the model is loaded regardless of starting and stopping recognition. |
| * Once the model is unloaded, the value will be lost. If the value is not set, a default |
| * value is returned. See ModelParams for parameter default values. |
| * {{@link #queryParameter}} should be checked first before calling this |
| * method. |
| * |
| * @param keyphraseId The identifier of the keyphrase for which |
| * to modify model parameters |
| * @param modelParam {@link ModelParams} |
| * @return value of parameter |
| * @throws UnsupportedOperationException if hal or model do not support this API. |
| * queryParameter should be checked first. |
| * @throws IllegalArgumentException if invalid model handle or parameter is passed. |
| * queryParameter should be checked first. |
| */ |
| int getParameter(int keyphraseId, @ModelParams int modelParam); |
| |
| /** |
| * Determine if parameter control is supported for the given model handle. |
| * This method should be checked prior to calling {@link #setParameter} |
| * or {@link #getParameter}. |
| * |
| * @param keyphraseId The identifier of the keyphrase for which |
| * to modify model parameters |
| * @param modelParam {@link ModelParams} |
| * @return supported range of parameter, null if not supported |
| */ |
| @Nullable |
| ModelParamRange queryParameter(int keyphraseId, |
| @ModelParams int modelParam); |
| |
| /** |
| * Invalidates the sound trigger session and clears any associated resources. Subsequent |
| * calls to this object will throw IllegalStateException. |
| */ |
| void detach(); |
| |
| /** |
| * Unloads (and stops if running) the given keyphraseId |
| */ |
| int unloadKeyphraseModel(int keyphaseId); |
| } |
| } |