Android Open Source - android-continuous-voice Pocket Sphinx Recognizer

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License

The source code is released under:

Copyright (c) 2015, Marius Fink - Universit?t Hamburg All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following ...

Java Source Code

/* Copyright (c) 2014 Alpha Cephei Inc.  All rights reserved.
 * BSD-License/*  w  w  w .j  ava  2 s . c  o m*/
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY ALPHA CEPHEI INC. ``AS IS'' AND
 * ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY
 * NOR ITS EMPLOYEES BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * ====================================================================
 */
package de.uniHamburg.informatik.continuousvoice.services.recognition.pocketSphinx;

import static edu.cmu.pocketsphinx.SpeechRecognizerSetup.defaultSetup;

import java.io.File;
import java.util.HashMap;
import java.util.Map;

import de.uniHamburg.informatik.continuousvoice.services.recognition.AbstractRecognizer;
import edu.cmu.pocketsphinx.Hypothesis;
import edu.cmu.pocketsphinx.RecognitionListener;
import edu.cmu.pocketsphinx.SpeechRecognizer;

public class PocketSphinxRecognizer extends AbstractRecognizer implements RecognitionListener {

    private SpeechRecognizer recognizer;
    private File assetsDir;

    @Override
    public void start() {
//        super.start();
//
//        new AsyncTask<Void, Void, Exception>() {
//            @Override
//            protected Exception doInBackground(Void... params) {
//                try {
//                    Assets assets = new Assets(PocketSphinxRecognitionService.this);
//                    File assetDir = assets.syncAssets();
//                    assetsDir = assetDir;
//                } catch (IOException e) {
//                    return e;
//                }
//                return null;
//            }
//
//            @Override
//            protected void onPostExecute(Exception result) {
//                if (result != null) {
//                    String text = "Failed to init PocketSphinx: " + result;
//                    Toast.makeText(getApplicationContext(), text, Toast.LENGTH_LONG).show();
//                } else {
//                    continueRecognizing();
//                    Toast.makeText(getApplicationContext(), "PocketSphinx Ready!", Toast.LENGTH_SHORT).show();
//                }
//            }
//        }.execute();
    }

    @Override
    public void stop() {
//        super.stop();
//        recognizer.stop();
    }

    private void continueRecognizing() {
//        recognizer.stop();
//        recognizer.startListening("freespeech");
    }

    @Override
    public void initialize() {
//        Map<String, String> deSphinx = new HashMap<String, String>();
//        deSphinx.put("acousticModel", "hmm/de-de-voxforge-sphinx");
//        deSphinx.put("dictionary", "dict/voxforge_de_sphinx.dic");
//        deSphinx.put("languageModel", "lm/voxforge_de_sphinx.lm");
//        Map<String, String> deFull = new HashMap<String, String>();
//        deFull.put("acousticModel", "hmm/de-de-voxforge");
//        deFull.put("dictionary", "dict/voxforge_de.dic");
//        deFull.put("languageModel", "lm/voxforge_de.dmp");
//        Map<String, String> enUs = new HashMap<String, String>();
//        enUs.put("acousticModel", "hmm/en-us");
//        enUs.put("dictionary", "dict/voxforge_en_us.dic");
//        enUs.put("languageModel", "lm/en-us.dmp");
//        
//        //SET LANGUAGE HERE!
//        Map<String, String> language = deFull;
//        
//        File modelsDir = new File(assetsDir, "models");
//        recognizer = defaultSetup()
//                
//                .setAcousticModel(new File(modelsDir, language.get("acousticModel")))
//                .setDictionary(new File(modelsDir, language.get("dictionary")))
//                
//                .setRawLogDir(assetsDir)
//                .setKeywordThreshold(1e-20f).getRecognizer();
//        recognizer.addListener(this);
//
//        File languageModel = new File(modelsDir, language.get("languageModel"));
//        recognizer.addNgramSearch("freespeech", languageModel);
    }

    @Override
    public void onPartialResult(Hypothesis hypothesis) {
        // String result = hypothesis.getHypstr();
    }

    @Override
    public void onResult(Hypothesis hypothesis) {
        if (hypothesis != null) {
            String text = hypothesis.getHypstr();
            addWords(text);
        }
    }

    @Override
    public void onBeginningOfSpeech() {
    }

    @Override
    public void onEndOfSpeech() {
        continueRecognizing();
    }

    @Override
    public String getName() {
        return "PocketSphinx";
    }
}

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