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tdeaccessibility/kttsd/plugins/flite/fliteproc.cpp

282 lines
9.3 KiB

/***************************************************** vim:set ts=4 sw=4 sts=4:
Main speaking functions for the Festival Lite (Flite) Plug in
-------------------
Copyright:
(C) 2004 by Gary Cramblitt <garycramblitt@comcast.net>
-------------------
Original author: Gary Cramblitt <garycramblitt@comcast.net>
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; either version 2 of the License, or
(at your option) any later version.
This program 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.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
******************************************************************************/
// TQt includes.
#include <tqstring.h>
#include <tqstringlist.h>
// KDE includes.
#include <kdebug.h>
#include <kconfig.h>
#include <kstandarddirs.h>
#include <kprocess.h>
// Flite Plugin includes.
#include "fliteproc.h"
#include "fliteproc.moc"
/** Constructor */
FliteProc::FliteProc( TQObject* parent, const char* name, const TQStringList& ) :
PlugInProc( parent, name ){
kdDebug() << "FliteProc::FliteProc: Running" << endl;
m_state = psIdle;
m_waitingStop = false;
m_fliteProc = 0;
}
/** Destructor */
FliteProc::~FliteProc(){
kdDebug() << "FliteProc::~FliteProc:: Running" << endl;
if (m_fliteProc)
{
stopText();
delete m_fliteProc;
}
}
/** Initialize the speech */
bool FliteProc::init(KConfig* config, const TQString& configGroup){
// kdDebug() << "Running: FliteProc::init(const TQString &lang)" << endl;
// kdDebug() << "Initializing plug in: Flite" << endl;
// Retrieve path to flite executable.
config->setGroup(configGroup);
m_fliteExePath = config->readEntry("FliteExePath", "flite");
kdDebug() << "FliteProc::init: path to flite: " << m_fliteExePath << endl;
return true;
}
/**
* Say a text. Synthesize and audibilize it.
* @param text The text to be spoken.
*
* If the plugin supports asynchronous operation, it should return immediately.
*/
void FliteProc::sayText(const TQString &text)
{
synth(text, TQString(), m_fliteExePath);
}
/**
* Synthesize text into an audio file, but do not send to the audio device.
* @param text The text to be synthesized.
* @param suggestedFilename Full pathname of file to create. The plugin
* may ignore this parameter and choose its own
* filename. KTTSD will query the generated
* filename using getFilename().
*
* If the plugin supports asynchronous operation, it should return immediately.
*/
void FliteProc::synthText(const TQString& text, const TQString& suggestedFilename)
{
synth(text, suggestedFilename, m_fliteExePath);
}
/**
* Say or Synthesize text.
* @param text The text to be synthesized.
* @param suggestedFilename If not Null, synthesize only to this filename, otherwise
* synthesize and audibilize the text.
*/
void FliteProc::synth(
const TQString &text,
const TQString &synthFilename,
const TQString& fliteExePath)
{
// kdDebug() << "Running: FliteProc::synth(const TQString &text)" << endl;
if (m_fliteProc)
{
if (m_fliteProc->isRunning()) m_fliteProc->kill();
delete m_fliteProc;
m_fliteProc = 0;
}
// kdDebug()<< "FliteProc::synth: Creating Flite object" << endl;
m_fliteProc = new KProcess;
connect(m_fliteProc, TQT_SIGNAL(processExited(KProcess*)),
this, TQT_SLOT(slotProcessExited(KProcess*)));
connect(m_fliteProc, TQT_SIGNAL(receivedStdout(KProcess*, char*, int)),
this, TQT_SLOT(slotReceivedStdout(KProcess*, char*, int)));
connect(m_fliteProc, TQT_SIGNAL(receivedStderr(KProcess*, char*, int)),
this, TQT_SLOT(slotReceivedStderr(KProcess*, char*, int)));
connect(m_fliteProc, TQT_SIGNAL(wroteStdin(KProcess*)),
this, TQT_SLOT(slotWroteStdin(KProcess* )));
if (synthFilename.isNull())
m_state = psSaying;
else
m_state = psSynthing;
// Encode quotation characters.
TQString saidText = text;
/*
saidText.replace("\\\"", "#!#!");
saidText.replace("\"", "\\\"");
saidText.replace("#!#!", "\\\"");
// Remove certain comment characters.
saidText.replace("--", "");
saidText = "\"" + saidText + "\"";
*/
saidText += "\n";
*m_fliteProc << fliteExePath;
// *m_fliteProc << "-t" << saidText;
if (!synthFilename.isNull()) *m_fliteProc << "-o" << synthFilename;
// Ok, let's rock.
m_synthFilename = synthFilename;
kdDebug() << "FliteProc::synth: Synthing text: '" << saidText << "' using Flite plug in" << endl;
if (!m_fliteProc->start(KProcess::NotifyOnExit, KProcess::All))
{
kdDebug() << "FliteProc::synth: Error starting Flite process. Is flite in the PATH?" << endl;
m_state = psIdle;
return;
}
kdDebug()<< "FliteProc:synth: Flite initialized" << endl;
m_fliteProc->writeStdin(saidText.latin1(), saidText.length());
}
/**
* Get the generated audio filename from synthText.
* @return Name of the audio file the plugin generated.
* Null if no such file.
*
* The plugin must not re-use the filename.
*/
TQString FliteProc::getFilename()
{
kdDebug() << "FliteProc::getFilename: returning " << m_synthFilename << endl;
return m_synthFilename;
}
/**
* Stop current operation (saying or synthesizing text).
* Important: This function may be called from a thread different from the
* one that called sayText or synthText.
* If the plugin cannot stop an in-progress @ref sayText or
* @ref synthText operation, it must not block waiting for it to complete.
* Instead, return immediately.
*
* If a plugin returns before the operation has actually been stopped,
* the plugin must emit the @ref stopped signal when the operation has
* actually stopped.
*
* The plugin should change to the psIdle state after stopping the
* operation.
*/
void FliteProc::stopText(){
kdDebug() << "FliteProc::stopText:: Running" << endl;
if (m_fliteProc)
{
if (m_fliteProc->isRunning())
{
kdDebug() << "FliteProc::stopText: killing Flite." << endl;
m_waitingStop = true;
m_fliteProc->kill();
} else m_state = psIdle;
}else m_state = psIdle;
kdDebug() << "FliteProc::stopText: Flite stopped." << endl;
}
void FliteProc::slotProcessExited(KProcess*)
{
kdDebug() << "FliteProc:slotProcessExited: Flite process has exited." << endl;
pluginState prevState = m_state;
if (m_waitingStop)
{
m_waitingStop = false;
m_state = psIdle;
emit stopped();
} else {
m_state = psFinished;
if (prevState == psSaying)
emit sayFinished();
else
if (prevState == psSynthing)
emit synthFinished();
}
}
void FliteProc::slotReceivedStdout(KProcess*, char* buffer, int buflen)
{
TQString buf = TQString::tqfromLatin1(buffer, buflen);
kdDebug() << "FliteProc::slotReceivedStdout: Received output from Flite: " << buf << endl;
}
void FliteProc::slotReceivedStderr(KProcess*, char* buffer, int buflen)
{
TQString buf = TQString::tqfromLatin1(buffer, buflen);
kdDebug() << "FliteProc::slotReceivedStderr: Received error from Flite: " << buf << endl;
}
void FliteProc::slotWroteStdin(KProcess*)
{
kdDebug() << "FliteProc::slotWroteStdin: closing Stdin" << endl;
m_fliteProc->closeStdin();
}
/**
* Return the current state of the plugin.
* This function only makes sense in asynchronous mode.
* @return The pluginState of the plugin.
*
* @see pluginState
*/
pluginState FliteProc::getState() { return m_state; }
/**
* Acknowledges a finished state and resets the plugin state to psIdle.
*
* If the plugin is not in state psFinished, nothing happens.
* The plugin may use this call to do any post-processing cleanup,
* for example, blanking the stored filename (but do not delete the file).
* Calling program should call getFilename prior to ackFinished.
*/
void FliteProc::ackFinished()
{
if (m_state == psFinished)
{
m_state = psIdle;
m_synthFilename = TQString();
}
}
/**
* Returns True if the plugin supports asynchronous processing,
* i.e., returns immediately from sayText or synthText.
* @return True if this plugin supports asynchronous processing.
*
* If the plugin returns True, it must also implement @ref getState .
* It must also emit @ref sayFinished or @ref synthFinished signals when
* saying or synthesis is completed.
*/
bool FliteProc::supportsAsync() { return true; }
/**
* Returns True if the plugin supports synthText method,
* i.e., is able to synthesize text to a sound file without
* audibilizing the text.
* @return True if this plugin supports synthText method.
*/
bool FliteProc::supportsSynth() { return true; }