espeak-ng/android/src/com/reecedunn/espeak/VoiceSettings.java

/*
 * Copyright (C) 2013 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.
 */

package com.reecedunn.espeak;

import android.content.SharedPreferences;

public class VoiceSettings {
    private final SharedPreferences mPreferences;
    private final SpeechSynthesis mEngine;

    public static final String PREF_DEFAULT_GENDER = "default_gender";
    public static final String PREF_VARIANT = "espeak_variant";
    public static final String PREF_DEFAULT_RATE = "default_rate";
    public static final String PREF_RATE = "espeak_rate";
    public static final String PREF_DEFAULT_PITCH = "default_pitch";
    public static final String PREF_PITCH = "espeak_pitch";

    public VoiceSettings(SharedPreferences preferences, SpeechSynthesis engine) {
        mPreferences = preferences;
        mEngine = engine;
    }

    public VoiceVariant getVoiceVariant() {
        String variant = mPreferences.getString(PREF_VARIANT, null);
        if (variant == null) {
            int gender = getPreferenceValue(PREF_DEFAULT_GENDER, SpeechSynthesis.GENDER_MALE);
            if (gender == SpeechSynthesis.GENDER_FEMALE) {
                return VoiceVariant.parseVoiceVariant(VoiceVariant.FEMALE);
            }
            return VoiceVariant.parseVoiceVariant(VoiceVariant.MALE);
        }
        return VoiceVariant.parseVoiceVariant(variant);
    }

    public int getRate() {
        int min = mEngine.Rate.getMinValue();
        int max = mEngine.Rate.getMaxValue();

        int rate = getPreferenceValue(PREF_RATE, Integer.MIN_VALUE);
        if (rate == Integer.MIN_VALUE) {
            rate = (int)((float)getPreferenceValue(PREF_DEFAULT_RATE, 100) / 100 * (float)mEngine.Rate.getDefaultValue());
        }

        if (rate > max) rate = max;
        if (rate < min) rate = min;
        return rate;
    }

    public int getPitch() {
        int min = mEngine.Pitch.getMinValue();
        int max = mEngine.Pitch.getMaxValue();

        int pitch = getPreferenceValue(PREF_PITCH, Integer.MIN_VALUE);
        if (pitch == Integer.MIN_VALUE) {
            pitch = getPreferenceValue(PREF_DEFAULT_PITCH, 100) / 2;
        }

        if (pitch > max) pitch = max;
        if (pitch < min) pitch = min;
        return pitch;
    }

    private int getPreferenceValue(String preference, int defaultValue) {
        String prefString = mPreferences.getString(preference, null);
        if (prefString == null) {
            return defaultValue;
        }
        return Integer.parseInt(prefString);
    }
}