org.luwrain.extensions.mssapi.SSML.java Source code

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Here is the source code for org.luwrain.extensions.mssapi.SSML.java

Source

/*
   Copyright 2012-2018 Michael Pozhidaev <michael.pozhidaev@gmail.com>
   Copyright 2015-2016 Roman Volovodov <gr.rPman@gmail.com>
    
   This file is part of LUWRAIN.
    
   LUWRAIN is free software; you can redistribute it and/or
   modify it under the terms of the GNU General Public
   License as published by the Free Software Foundation; either
   version 3 of the License, or (at your option) any later version.
    
   LUWRAIN is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   General Public License for more details.
*/
package org.luwrain.extensions.mssapi;

import org.apache.commons.lang3.StringEscapeUtils;

public class SSML {
    /** convert text to ssml xml with upper pitch control for each upper case char
     * @param pitch pitch increase in % */
    public static String upperCasePitchControl(String text, int pitch) {
        String xml = StringEscapeUtils.escapeXml11(text);
        StringBuilder sb = new StringBuilder(xml.length());
        sb.append(
                "<?xml version='1.0' encoding='utf-8'?><speak version='1.0' xmlns='http://www.w3.org/2001/10/synthesis' xml:lang='ru-RU'><prosody pitch='+0%'>");
        StringBuilder sbul = new StringBuilder(xml.length());
        Boolean lasupper = null;
        for (char c : xml.toCharArray()) {
            if (lasupper == null)
                lasupper = Character.isUpperCase(c);
            if (lasupper != Character.isUpperCase(c)) {
                if (lasupper) {
                    sb.append("<prosody pitch='");
                    sb.append(String.format("%+d", pitch));
                    sb.append("%'>");
                    sb.append(sbul);
                    sb.append("</prosody>");
                } else {
                    sb.append(sbul);
                }
                sbul.delete(0, sbul.length());
            }
            lasupper = Character.isUpperCase(c);
            sbul.append(c);
        }
        if (lasupper) {
            sb.append("<prosody pitch='");
            sb.append(String.format("%+d", pitch));
            sb.append("%'>");
            sb.append(sbul);
            sb.append("</prosody>");
        } else {
            sb.append(sbul);
        }
        sb.append("</prosody></speak>");
        return sb.toString();
    }
}