mirror of
https://github.com/rhasspy/espeak-ng.git
synced 2026-11-02 22:07:12 +00:00
Relocate the package to com.reecedunn.espeak
This commit is contained in:
Reece H. Dunn
@@ -0,0 +1,292 @@
|
||||
/*
|
||||
* Copyright (C) 2011 Google Inc.
|
||||
* Copyright (C) 2012 Reece H. Dunn
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
|
||||
/*
|
||||
* This file implements the Android Text-to-Speech engine for eSpeak.
|
||||
*
|
||||
* Android Version: 4.0 (Ice Cream Sandwich)
|
||||
* API Version: 14
|
||||
*/
|
||||
|
||||
package com.reecedunn.espeak;
|
||||
|
||||
import android.annotation.SuppressLint;
|
||||
import android.content.BroadcastReceiver;
|
||||
import android.content.Context;
|
||||
import android.content.Intent;
|
||||
import android.content.IntentFilter;
|
||||
import android.content.SharedPreferences;
|
||||
import android.media.AudioTrack;
|
||||
import android.os.Bundle;
|
||||
import android.preference.PreferenceManager;
|
||||
import android.speech.tts.SynthesisCallback;
|
||||
import android.speech.tts.SynthesisRequest;
|
||||
import android.speech.tts.TextToSpeech;
|
||||
import android.speech.tts.TextToSpeechService;
|
||||
import android.util.Log;
|
||||
|
||||
import com.reecedunn.espeak.SpeechSynthesis.SynthReadyCallback;
|
||||
import com.reecedunn.espeak.SpeechSynthesis.Voice;
|
||||
|
||||
import java.util.List;
|
||||
import java.util.Locale;
|
||||
|
||||
/**
|
||||
* Implements the eSpeak engine as a {@link TextToSpeechService}.
|
||||
*
|
||||
* @author alanv@google.com (Alan Viverette)
|
||||
*/
|
||||
@SuppressLint("NewApi")
|
||||
public class TtsService extends TextToSpeechService {
|
||||
private static final String TAG = TtsService.class.getSimpleName();
|
||||
private static final boolean DEBUG = false;
|
||||
|
||||
private static final String DEFAULT_LANGUAGE = "en";
|
||||
private static final String DEFAULT_COUNTRY = "uk";
|
||||
private static final String DEFAULT_VARIANT = "";
|
||||
|
||||
private SpeechSynthesis mEngine;
|
||||
private SynthesisCallback mCallback;
|
||||
|
||||
private List<Voice> mAvailableVoices;
|
||||
private Voice mMatchingVoice = null;
|
||||
|
||||
private String mLanguage = DEFAULT_LANGUAGE;
|
||||
private String mCountry = DEFAULT_COUNTRY;
|
||||
private String mVariant = DEFAULT_VARIANT;
|
||||
|
||||
@Override
|
||||
public void onCreate() {
|
||||
if (!CheckVoiceData.hasBaseResources(this)) {
|
||||
final IntentFilter filter =
|
||||
new IntentFilter(DownloadVoiceData.BROADCAST_LANGUAGES_UPDATED);
|
||||
registerReceiver(mBroadcastReceiver, filter);
|
||||
|
||||
final Intent intent = new Intent(this, DownloadVoiceData.class);
|
||||
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
|
||||
startActivity(intent);
|
||||
|
||||
return;
|
||||
}
|
||||
|
||||
initializeTtsEngine();
|
||||
|
||||
// This calls onIsLanguageAvailable() and must run AFTER initialization!
|
||||
super.onCreate();
|
||||
}
|
||||
|
||||
/**
|
||||
* Sets up the native eSpeak engine.
|
||||
*/
|
||||
private void initializeTtsEngine() {
|
||||
if (mEngine != null) {
|
||||
mEngine.stop();
|
||||
mEngine = null;
|
||||
}
|
||||
|
||||
mEngine = new SpeechSynthesis(this, mSynthCallback);
|
||||
mAvailableVoices = mEngine.getAvailableVoices();
|
||||
}
|
||||
|
||||
@Override
|
||||
protected String[] onGetLanguage() {
|
||||
// This is used to specify the language requested from GetSampleText.
|
||||
return new String[] {
|
||||
mLanguage, mCountry, mVariant
|
||||
};
|
||||
}
|
||||
|
||||
@Override
|
||||
protected int onIsLanguageAvailable(String language, String country, String variant) {
|
||||
if (mAvailableVoices == null) {
|
||||
Log.e(TAG, "Attempted to check language availability before loading voices!");
|
||||
return TextToSpeech.LANG_NOT_SUPPORTED;
|
||||
}
|
||||
|
||||
final Locale query = new Locale(language, country, variant);
|
||||
|
||||
Voice languageVoice = null;
|
||||
Voice countryVoice = null;
|
||||
|
||||
synchronized (mAvailableVoices) {
|
||||
for (Voice voice : mAvailableVoices) {
|
||||
switch (voice.match(query)) {
|
||||
case TextToSpeech.LANG_COUNTRY_VAR_AVAILABLE:
|
||||
mMatchingVoice = voice;
|
||||
return TextToSpeech.LANG_COUNTRY_VAR_AVAILABLE;
|
||||
case TextToSpeech.LANG_COUNTRY_AVAILABLE:
|
||||
countryVoice = voice;
|
||||
case TextToSpeech.LANG_AVAILABLE:
|
||||
languageVoice = voice;
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (languageVoice == null) {
|
||||
mMatchingVoice = null;
|
||||
return TextToSpeech.LANG_NOT_SUPPORTED;
|
||||
} else if (countryVoice == null) {
|
||||
mMatchingVoice = languageVoice;
|
||||
return TextToSpeech.LANG_AVAILABLE;
|
||||
} else {
|
||||
mMatchingVoice = countryVoice;
|
||||
return TextToSpeech.LANG_COUNTRY_AVAILABLE;
|
||||
}
|
||||
}
|
||||
|
||||
@Override
|
||||
protected int onLoadLanguage(String language, String country, String variant) {
|
||||
final int result = onIsLanguageAvailable(language, country, variant);
|
||||
|
||||
// Return immediately if the language is not available.
|
||||
if (result == TextToSpeech.LANG_NOT_SUPPORTED) {
|
||||
Log.e(TAG, "Failed to load language {language='" + language + "', country='" + country
|
||||
+ "', variant='" + variant + "'");
|
||||
return result;
|
||||
}
|
||||
|
||||
synchronized (this) {
|
||||
mLanguage = language;
|
||||
mCountry = ((country == null) ? "" : country);
|
||||
mVariant = ((variant == null) ? "" : variant);
|
||||
}
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
@Override
|
||||
protected void onStop() {
|
||||
Log.i(TAG, "Received stop request.");
|
||||
|
||||
mEngine.stop();
|
||||
}
|
||||
|
||||
@Override
|
||||
protected synchronized void onSynthesizeText(
|
||||
SynthesisRequest request, SynthesisCallback callback) {
|
||||
final int result = onLoadLanguage(request.getLanguage(), request.getCountry(), request.getVariant());
|
||||
|
||||
// Return immediately if the language is not available.
|
||||
if (result == TextToSpeech.LANG_NOT_SUPPORTED) {
|
||||
return;
|
||||
}
|
||||
|
||||
final String text = request.getText();
|
||||
final int gender = getDefaultGender();
|
||||
final int rate = scaleRate(request.getSpeechRate());
|
||||
final int pitch = scalePitch(request.getPitch());
|
||||
final Bundle params = request.getParams();
|
||||
|
||||
if (DEBUG) {
|
||||
Log.i(TAG, "Received synthesis request: {language=\"" + mMatchingVoice.name + "\"}");
|
||||
|
||||
for (String key : params.keySet()) {
|
||||
Log.v(TAG,
|
||||
"Synthesis request contained param {" + key + ", " + params.get(key) + "}");
|
||||
}
|
||||
}
|
||||
|
||||
mCallback = callback;
|
||||
mCallback.start(mEngine.getSampleRate(), mEngine.getAudioFormat(),
|
||||
mEngine.getChannelCount());
|
||||
|
||||
mEngine.setVoiceByProperties(null, mMatchingVoice.name, gender, 0, 0);
|
||||
mEngine.setRate(rate);
|
||||
mEngine.setPitch(pitch);
|
||||
mEngine.synthesize(text);
|
||||
}
|
||||
|
||||
/**
|
||||
* Scales the pitch by the user-specified value.
|
||||
*
|
||||
* @param pitch A pitch value.
|
||||
* @return A scaled pitch value.
|
||||
*/
|
||||
private int scalePitch(int pitch) {
|
||||
final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
|
||||
final String defaultPitchString = prefs.getString("default_pitch", "100");
|
||||
final int defaultPitch = Integer.parseInt(defaultPitchString);
|
||||
|
||||
return (pitch * defaultPitch / 100);
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns user-specified gender.
|
||||
*
|
||||
* @return A gender value.
|
||||
*/
|
||||
private int getDefaultGender() {
|
||||
final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
|
||||
final String defaultGenderString = prefs.getString("default_gender", "0");
|
||||
final int defaultGender = Integer.parseInt(defaultGenderString);
|
||||
|
||||
return defaultGender;
|
||||
}
|
||||
|
||||
/**
|
||||
* Scales the rate by the user-specified value.
|
||||
*
|
||||
* @param rate A rate value.
|
||||
* @return A scaled rate value.
|
||||
*/
|
||||
private int scaleRate(int rate) {
|
||||
final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
|
||||
final String defaultRateString = prefs.getString("default_rate", "100");
|
||||
final int defaultRate = Integer.parseInt(defaultRateString);
|
||||
|
||||
return (rate * defaultRate / 100);
|
||||
}
|
||||
|
||||
/**
|
||||
* Pipes synthesizer output from native eSpeak to an {@link AudioTrack}.
|
||||
*/
|
||||
private final SpeechSynthesis.SynthReadyCallback mSynthCallback = new SynthReadyCallback() {
|
||||
@Override
|
||||
public void onSynthDataReady(byte[] audioData) {
|
||||
if ((audioData == null) || (audioData.length == 0)) {
|
||||
onSynthDataComplete();
|
||||
return;
|
||||
}
|
||||
|
||||
final int maxBytesToCopy = mCallback.getMaxBufferSize();
|
||||
|
||||
int offset = 0;
|
||||
|
||||
while (offset < audioData.length) {
|
||||
final int bytesToWrite = Math.min(maxBytesToCopy, (audioData.length - offset));
|
||||
mCallback.audioAvailable(audioData, offset, bytesToWrite);
|
||||
offset += bytesToWrite;
|
||||
}
|
||||
}
|
||||
|
||||
@Override
|
||||
public void onSynthDataComplete() {
|
||||
mCallback.done();
|
||||
}
|
||||
};
|
||||
|
||||
/**
|
||||
* Listens for language update broadcasts and initializes the eSpeak engine.
|
||||
*/
|
||||
private final BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver() {
|
||||
@Override
|
||||
public void onReceive(Context context, Intent intent) {
|
||||
initializeTtsEngine();
|
||||
}
|
||||
};
|
||||
}
|
||||
Reference in New Issue
Block a user