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<?xml version="1.0" encoding="UTF-8"?>
<!-- ***********************************************************************
SSMLtoSable.xsl
Stylesheet for transforming SSML into SABLE markup.
============
Copyright : (C) 2004 by Paul Giannaros
============
Original author: Paul Giannaros <ceruleanblaze@gmail.com>
***************************************************************************
***************************************************************************
* *
* This program 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; version 2 of the License. *
* *
*************************************************************************** -->
<!-- @todo create a doc detailing which parts of SSML this sheet can handle -->
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="html" indent="no"/>
<!-- speak: Indicates SSML markup. -->
<xsl:template match="/speak">
<SABLE><xsl:apply-templates/></SABLE>
</xsl:template>
<!-- sub: The word that the text sounds like as abbreviations
can be pronounced differently. For example,
<sub alias="doctor">Dr.</sub> smith lives at 32 johnson <sub alias="drive">dr.</sub> -->
<xsl:template match="//sub">
<xsl:choose>
<xsl:when test="@alias">
<xsl:value-of select="@alias"/>
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="."/>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
<!-- p: Indicate a paragraph of text -->
<xsl:template match="//p">
<DIV TYPE="paragraph"><xsl:apply-templates/></DIV>
</xsl:template>
<!-- s: Forceefully indicate a sentence (Does not need to be used
if full stops are present) -->
<xsl:template match="//s">
<DIV TYPE="sentence"><xsl:apply-templates/></DIV>
</xsl:template>
<!-- emphasis: Emphasize a word or group of words. -->
<xsl:template match="//emphasis">
<!-- SSML and SABLE both take the same values for their attributes -
strong, moderate, none, reduced -->
<EM TYPE="{@level}"><xsl:apply-templates/></EM>
</xsl:template>
<xsl:template match="//voice">
<!-- This is turned off because if Festival lacks an installed voice to match a gender
or voice name, it bombs out. argh!
<xsl:call-template name="voice"><xsl:with-param name="a" select="@*" /></xsl:call-template> -->
<xsl:apply-templates/>
</xsl:template>
<xsl:template name="voice">
<xsl:param name="a" />
<!-- Get the name of the tag we're creating and convert to a SABLE tag. -->
<xsl:variable name="tag">
<xsl:choose>
<xsl:when test="name($a[1])='gender'">SPEAKER</xsl:when>
<xsl:when test="name($a[1])='age'">SPEAKER</xsl:when>
<xsl:when test="name($a[1])='name'">SPEAKER</xsl:when>
<xsl:otherwise><xsl:value-of select="$a[1]"/></xsl:otherwise>
</xsl:choose>
</xsl:variable>
<xsl:element name="{$tag}">
<!-- Create the right attribute to go with element $tag. -->
<xsl:choose>
<!-- gender:
The gender of the voice.
Values such as male, female, and neutral are supported. -->
<xsl:when test="name($a[1])='gender' and $a[1]='male'">
<xsl:attribute name="GENDER">male1</xsl:attribute>
</xsl:when>
<xsl:when test="name($a[1])='gender' and $a[1]='female'">
<xsl:attribute name="GENDER">female1</xsl:attribute>
</xsl:when>
<!-- If none of the above match, take the users selected value. -->
<xsl:when test="name($a[1])='gender'">
<xsl:attribute name="GENDER"><xsl:value-of select=" $a[1]"/></xsl:attribute>
</xsl:when>
<!-- age:
The age of the voice.
Positive integer values are supported. -->
<xsl:when test="name($a[1])='age' and number($a[1]) < 10">
<xsl:attribute name="AGE">child</xsl:attribute>
</xsl:when>
<xsl:when test="name($a[1])='age' and number($a[1]) < 20">
<xsl:attribute name="AGE">teen</xsl:attribute>
</xsl:when>
<xsl:when test="name($a[1])='age' and number($a[1]) < 30">
<xsl:attribute name="AGE">younger</xsl:attribute>
</xsl:when>
<xsl:when test="name($a[1])='age' and number($a[1]) < 50">
<xsl:attribute name="AGE">middle</xsl:attribute>
</xsl:when>
<xsl:when test="name($a[1])='age'">
<xsl:attribute name="AGE">older</xsl:attribute>
</xsl:when>
<!-- name:
Voice name. Synth dependent. -->
<xsl:when test="name($a[1])='name'">
<xsl:attribute name="NAME"><xsl:value-of select=" $a[1]"/></xsl:attribute>
</xsl:when>
</xsl:choose>
<!-- Recursively call ourself. -->
<xsl:choose>
<xsl:when test="$a[2]">
<xsl:call-template name="voice"><xsl:with-param name="a" select="$a[position()>1]" /></xsl:call-template>
</xsl:when>
<xsl:otherwise>
<xsl:apply-templates/>
</xsl:otherwise>
</xsl:choose>
</xsl:element>
</xsl:template>
<xsl:template match="prosody">
<!-- contour and duration not supported. -->
<xsl:call-template name="prosody"><xsl:with-param name="a"
select="@pitch|@rate|@volume|@range" />
</xsl:call-template>
</xsl:template>
<xsl:template name="prosody">
<xsl:param name="a" />
<!-- Get the name of the tag we're creating and convert to a SABLE tag. -->
<xsl:variable name="tag">
<xsl:choose>
<xsl:when test="name($a[1])='pitch'">PITCH</xsl:when>
<xsl:when test="name($a[1])='rate'">RATE</xsl:when>
<xsl:when test="name($a[1])='volume'">VOLUME</xsl:when>
<xsl:when test="name($a[1])='range'">PITCH</xsl:when>
<xsl:otherwise><xsl:value-of select="$a[1]"/></xsl:otherwise>
</xsl:choose>
</xsl:variable>
<xsl:element name="{$tag}">
<!-- Create the right attribute to go with element $tag. -->
<xsl:choose>
<!-- pitch:
The pitch with which the text is spoken.
Values such as x-high, high, low, etc. and percentages (+ or -)
are supported. -->
<xsl:when test="name($a[1])='pitch' and $a[1]='x-high'">
<xsl:attribute name="BASE">70%</xsl:attribute>
</xsl:when>
<xsl:when test="name($a[1])='pitch' and $a[1]='high'">
<xsl:attribute name="BASE">40%</xsl:attribute>
</xsl:when>
<xsl:when test="name($a[1])='pitch' and $a[1]='medium'">
<xsl:attribute name="BASE">0%</xsl:attribute>
</xsl:when>
<xsl:when test="name($a[1])='pitch' and $a[1]='low'">
<xsl:attribute name="BASE">-40%</xsl:attribute>
</xsl:when>
<xsl:when test="name($a[1])='pitch' and $a[1]='x-low'">
<xsl:attribute name="BASE">-70%</xsl:attribute>
</xsl:when>
<!-- If none of the above match, take the users selected value. -->
<xsl:when test="name($a[1])='pitch'">
<xsl:attribute name="BASE"><xsl:value-of select=" $a[1]"/></xsl:attribute>
</xsl:when>
<!-- rate:
The speed at which the text is spoken.
Values such as x-fast, fast, slow, etc. and percentages (+ or -)
are supported. -->
<xsl:when test="name($a[1])='rate' and $a[1]='x-fast'">
<xsl:attribute name="SPEED">70%</xsl:attribute>
</xsl:when>
<xsl:when test="name($a[1])='rate' and $a[1]='fast'">
<xsl:attribute name="SPEED">40%</xsl:attribute>
</xsl:when>
<xsl:when test="name($a[1])='rate' and $a[1]='medium'">
<xsl:attribute name="SPEED">0%</xsl:attribute>
</xsl:when>
<xsl:when test="name($a[1])='rate' and $a[1]='slow'">
<xsl:attribute name="SPEED">-40%</xsl:attribute>
</xsl:when>
<xsl:when test="name($a[1])='rate' and $a[1]='x-slow'">
<xsl:attribute name="SPEED">-70%</xsl:attribute>
</xsl:when>
<xsl:when test="name($a[1])='rate'">
<xsl:attribute name="SPEED"><xsl:value-of select=" $a[1]"/></xsl:attribute>
</xsl:when>
<!-- volume:
The volume at which the text is spoken.
Values such as x-loud, loud, quiet, etc. and percentages (+ or -)
are supported. -->
<xsl:when test="name($a[1])='volume' and $a[1]='x-loud'">
<xsl:attribute name="LEVEL">70%</xsl:attribute>
</xsl:when>
<xsl:when test="name($a[1])='volume' and $a[1]='loud'">
<xsl:attribute name="LEVEL">50%</xsl:attribute>
</xsl:when>
<xsl:when test="name($a[1])='volume' and $a[1]='medium'">
<xsl:attribute name="LEVEL">0%</xsl:attribute>
</xsl:when>
<xsl:when test="name($a[1])='volume' and $a[1]='soft'">
<xsl:attribute name="LEVEL">-50%</xsl:attribute>
</xsl:when>
<xsl:when test="name($a[1])='volume' and $a[1]='x-soft'">
<xsl:attribute name="LEVEL">-70%</xsl:attribute>
</xsl:when>
<xsl:when test="name($a[1])='volume' and $a[1]='silent'">
<xsl:attribute name="LEVEL">-100%</xsl:attribute>
</xsl:when>
<xsl:when test="name($a[1])='volume'">
<xsl:attribute name="LEVEL"><xsl:value-of select=" $a[1]"/></xsl:attribute>
</xsl:when>
<!-- range:
The volume at which the text is spoken.
Values such as x-high, high, medium, low, x-low, etc. and percentages (+ or -)
are supported. -->
<xsl:when test="name($a[1])='range' and $a[1]='x-high'">
<xsl:attribute name="RANGE">70%</xsl:attribute>
</xsl:when>
<xsl:when test="name($a[1])='range' and $a[1]='high'">
<xsl:attribute name="RANGE">40%</xsl:attribute>
</xsl:when>
<xsl:when test="name($a[1])='range' and $a[1]='medium'">
<xsl:attribute name="RANGE">0%</xsl:attribute>
</xsl:when>
<xsl:when test="name($a[1])='range' and $a[1]='low'">
<xsl:attribute name="RANGE">-40%</xsl:attribute>
</xsl:when>
<xsl:when test="name($a[1])='range' and $a[1]='x-low'">
<xsl:attribute name="RANGE">-70%</xsl:attribute>
</xsl:when>
<!-- If none of the above match, take the users selected value. -->
<xsl:when test="name($a[1])='range'">
<xsl:attribute name="RANGE"><xsl:value-of select=" $a[1]"/></xsl:attribute>
</xsl:when>
</xsl:choose>
<!-- Recursively call ourself. -->
<xsl:choose>
<xsl:when test="$a[2]">
<xsl:call-template name="prosody"><xsl:with-param name="a" select="$a[position()>1]" /></xsl:call-template>
</xsl:when>
<xsl:otherwise>
<xsl:apply-templates/>
</xsl:otherwise>
</xsl:choose>
</xsl:element>
</xsl:template>
</xsl:stylesheet>
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