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/***************************************************** vim:set ts=4 sw=4 sts=4:
SSMLConvert class
This class is in charge of converting SSML text into a format that can
be handled by individual synths.
-------------------
Copyright:
(C) 2004 by Paul Giannaros <ceruleanblaze@gmail.com>
(C) 2004 by Gary Cramblitt <garycramblitt@comcast.net>
-------------------
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. *
* *
***************************************************************************/
#ifndef _SSMLCONVERT_H_
#define _SSMLCONVERT_H_
/**
* SsmlConvert class:
* Receives a QStringList of talkers and, based on that information,
* evaluates received SSML to discover which of the given talkers best
* suits it. It can then convert the given SSML into a format understandable
* by the talker.
*/
// Qt includes
#include <qobject.h>
#include <qstringlist.h>
class KProcess;
class QString;
class SSMLConvert : public QObject {
Q_OBJECT
public:
/** Constructors */
SSMLConvert();
SSMLConvert(const QStringList &talkers);
/** Destructor */
virtual ~SSMLConvert();
enum TransformState {
tsIdle = 0, // Not doing anything. Ready to transform.
tsTransforming = 1, // Transforming.
tsFinished = 2 // Transforming finished.
};
/**
* Set the talker codes to be used.
* @param talkers talker codes to be used.
*/
void setTalkers(const QStringList &talkers);
/**
* Extract the synth name from a talker code (i.e festival, flite, freetts).
* @param talkercode the talker code to extract the talker from.
* @returns the talker.
*/
QString extractTalker(const QString &talkercode);
/**
* Returns the most appropriate talker for the text to synth's talker code.
* @param text the text that will be parsed.
* @returns the appropriate talker for the job as a talker code QString.
*
* The appropriate talker is the one that has the most features that are required in some
* SSML markup. In the future i'm hoping to make the importance of individual features
* configurable, but better to walk before you can run.
* Currently, the searching method in place is like a filter: Those that meet the criteria we're
* searchin for stay while others are sifted out. This should leave us with the right talker to use.
* It's not a very good method, but should be appropriate in most cases and should do just fine for now.
*
* See the implementation file for more detail.
*/
QString appropriateTalker(const QString &text) const;
/**
* Applies the spreadsheet for a talker to the SSML and returns the talker-native output.
* @param text the markup to apply the spreadsheet to.
* @param xsltFilename the name of the stylesheet file that will be applied (i.e freetts, flite).
* @returns the output that the synth can understand.
*
* This converts a piece of SSML into a format the given talker can understand. It applies
* an XSLT spreadsheet to the SSML and returns the output.
*/
bool transform(const QString &text, const QString &xsltFilename);
/**
* Returns current processing state.
*/
int getState();
/**
* Returns the output from call to transform.
*/
QString getOutput();
signals:
/**
* Emitted whenever tranforming is completed.
*/
void transformFinished();
private slots:
void slotProcessExited(KProcess* proc);
private:
/// The XSLT processor.
KProcess *m_xsltProc;
/// Current talkers.
QStringList m_talkers;
// Current state.
int m_state;
// Name of XSLT file.
QString m_xsltFilename;
// Name of temporary input file.
QString m_inFilename;
// Name of temporary output file.
QString m_outFilename;
};
#endif // _SSMLCONVERT_H_
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