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tdeaccessibility/kttsd/plugins/epos/eposproc.cpp

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/***************************************************** vim:set ts=4 sw=4 sts=4:
eposproc.cpp
Main speaking functions for the Epos 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.
******************************************************************************/
// C++ includes.
#include <math.h>
// TQt includes.
#include <tqstring.h>
#include <tqstringlist.h>
#include <tqtextcodec.h>
#include <tqfile.h>
// KDE includes.
#include <kdebug.h>
#include <kconfig.h>
#include <ktempfile.h>
#include <kstandarddirs.h>
#include <kprocess.h>
// Epos Plugin includes.
#include "eposproc.h"
#include "eposproc.moc"
/** Constructor */
EposProc::EposProc( TQObject* parent, const char* name, const TQStringList& ) :
PlugInProc( parent, name ){
kdDebug() << "EposProc::EposProc: Running" << endl;
m_state = psIdle;
m_waitingStop = false;
m_eposServerProc = 0;
m_eposProc = 0;
}
/** Destructor */
EposProc::~EposProc(){
kdDebug() << "EposProc::~EposProc:: Running" << endl;
if (m_eposProc)
{
stopText();
delete m_eposProc;
}
delete m_eposServerProc;
}
/** Initialize the speech */
bool EposProc::init(KConfig* config, const TQString& configGroup)
{
// kdDebug() << "EposProc::init: Running" << endl;
// kdDebug() << "Initializing plug in: Epos" << endl;
// Retrieve path to epos executable.
config->setGroup(configGroup);
m_eposServerExePath = config->readEntry("EposServerExePath", "epos");
m_eposClientExePath = config->readEntry("EposClientExePath", "say");
m_eposLanguage = config->readEntry("Language", TQString());
m_time = config->readNumEntry("time", 100);
m_pitch = config->readNumEntry("pitch", 100);
m_eposServerOptions = config->readEntry("EposServerOptions", TQString());
m_eposClientOptions = config->readEntry("EposClientOptions", TQString());
kdDebug() << "EposProc::init: path to epos server: " << m_eposServerExePath << endl;
kdDebug() << "EposProc::init: path to epos client: " << m_eposClientExePath << endl;
TQString codecString = config->readEntry("Codec", "Local");
m_codec = codecNameToCodec(codecString);
// Start the Epos server if not already started.
if (!m_eposServerProc)
{
m_eposServerProc = new KProcess;
*m_eposServerProc << m_eposServerExePath;
if (!m_eposServerOptions.isEmpty())
*m_eposServerProc << m_eposServerOptions;
connect(m_eposServerProc, TQT_SIGNAL(receivedStdout(KProcess*, char*, int)),
this, TQT_SLOT(slotReceivedStdout(KProcess*, char*, int)));
connect(m_eposServerProc, TQT_SIGNAL(receivedStderr(KProcess*, char*, int)),
this, TQT_SLOT(slotReceivedStderr(KProcess*, char*, int)));
m_eposServerProc->start(KProcess::DontCare, KProcess::AllOutput);
}
kdDebug() << "EposProc::init: Initialized with codec: " << codecString << 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 EposProc::sayText(const TQString &text)
{
synth(text, TQString(), m_eposServerExePath, m_eposClientExePath,
m_eposServerOptions, m_eposClientOptions,
m_codec, m_eposLanguage, m_time, m_pitch);
}
/**
* 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 EposProc::synthText(const TQString& text, const TQString& suggestedFilename)
{
synth(text, suggestedFilename, m_eposServerExePath, m_eposClientExePath,
m_eposServerOptions, m_eposClientOptions,
m_codec, m_eposLanguage, m_time, m_pitch);
}
/**
* 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.
* @param eposServerExePath Path to the Epos server executable.
* @param eposClientExePath Path to the Epos client executable.
* @param eposServerOptions Options passed to Epos server executable.
* @param eposClientOptions Options passed to Epos client executable (don't include -o).
* @param codec Codec for encoding of text.
* @param eposLanguage Epos language setting. "czech", "slovak",
* or null (default language).
* @param time Speed percentage. 50 to 200. 200% = 2x normal.
* @param pitch Pitch persentage. 50 to 200.
*/
void EposProc::synth(
const TQString &text,
const TQString &suggestedFilename,
const TQString& eposServerExePath,
const TQString& eposClientExePath,
const TQString& eposServerOptions,
const TQString& eposClientOptions,
TQTextCodec *codec,
const TQString& eposLanguage,
int time,
int pitch)
{
// kdDebug() << "Running: EposProc::synth(const TQString &text)" << endl;
if (m_eposProc)
{
if (m_eposProc->isRunning()) m_eposProc->kill();
delete m_eposProc;
m_eposProc = 0;
}
// Start the Epos server if not already started.
if (!m_eposServerProc)
{
m_eposServerProc = new KProcess;
*m_eposServerProc << eposServerExePath;
if (!eposServerOptions.isEmpty())
*m_eposServerProc << eposServerOptions;
connect(m_eposServerProc, TQT_SIGNAL(receivedStdout(KProcess*, char*, int)),
this, TQT_SLOT(slotReceivedStdout(KProcess*, char*, int)));
connect(m_eposServerProc, TQT_SIGNAL(receivedStderr(KProcess*, char*, int)),
this, TQT_SLOT(slotReceivedStderr(KProcess*, char*, int)));
m_eposServerProc->start(KProcess::DontCare, KProcess::AllOutput);
kdDebug() << "EposProc:: Epos server process started" << endl;
}
// // Encode the text.
// // 1.a) encode the text
// m_encText = TQCString();
// TQTextStream ts (m_encText, IO_WriteOnly);
// ts.setCodec(codec);
// ts << text;
// ts << endl; // Some synths need this, eg. flite.
if (codec)
m_encText = codec->fromUnicode(text);
else
m_encText = text.latin1(); // Should not happen, but just in case.
// kdDebug()<< "EposProc::synth: Creating Epos object" << endl;
m_eposProc = new KProcess;
m_eposProc->setUseShell(true);
TQString languageCode;
if (eposLanguage == "czech")
languageCode == "cz";
else if (eposLanguage == "slovak")
languageCode == "sk";
if (!languageCode.isEmpty())
{
m_eposProc->setEnvironment("LANG", languageCode + "." + codec->mimeName());
m_eposProc->setEnvironment("LC_CTYPE", languageCode + "." + codec->mimeName());
}
*m_eposProc << eposClientExePath;
// Language.
if (!eposLanguage.isEmpty())
*m_eposProc << TQString("--language=%1").tqarg(eposLanguage);
// Rate (speed).
// Map 50% to 200% onto 0 to 1000.
// slider = alpha * (log(percent)-log(50))
// with alpha = 1000/(log(200)-log(50))
double alpha = 1000 / (log(200) - log(50));
int slider = (int)floor (0.5 + alpha * (log(time)-log(50)));
// Center at 0.
slider = slider - 500;
// Map -500 to 500 onto 45 to -45 then shift to 130 to 40 (85 midpoint).
float stretchValue = (-float(slider) * 45.0 / 500.0) + 85.0;
TQString timeMsg = TQString("--init_t=%1").tqarg(stretchValue, 0, 'f', 3);
*m_eposProc << timeMsg;
// Pitch. Map 50% to 200% onto 50 to 200. easy.
TQString pitchMsg = TQString("--init_f=%1").tqarg(pitch);
*m_eposProc << pitchMsg;
// Output file.
if (!suggestedFilename.isEmpty())
*m_eposProc << "-o";
if (!eposClientOptions.isEmpty())
*m_eposProc << eposClientOptions;
*m_eposProc << "-"; // Read from StdIn.
if (!suggestedFilename.isEmpty())
*m_eposProc << " >" + suggestedFilename;
connect(m_eposProc, TQT_SIGNAL(processExited(KProcess*)),
this, TQT_SLOT(slotProcessExited(KProcess*)));
connect(m_eposProc, TQT_SIGNAL(receivedStdout(KProcess*, char*, int)),
this, TQT_SLOT(slotReceivedStdout(KProcess*, char*, int)));
connect(m_eposProc, TQT_SIGNAL(receivedStderr(KProcess*, char*, int)),
this, TQT_SLOT(slotReceivedStderr(KProcess*, char*, int)));
connect(m_eposProc, TQT_SIGNAL(wroteStdin(KProcess*)),
this, TQT_SLOT(slotWroteStdin(KProcess* )));
if (suggestedFilename.isEmpty())
m_state = psSaying;
else
m_state = psSynthing;
// Ok, let's rock.
m_synthFilename = suggestedFilename;
// kdDebug() << "EposProc::synth: Synthing text: '" << text << "' using Epos plug in" << endl;
if (!m_eposProc->start(KProcess::NotifyOnExit, KProcess::All))
{
kdDebug() << "EposProc::synth: Error starting Epos process. Is epos in the PATH?" << endl;
m_state = psIdle;
return;
}
// kdDebug() << "EposProc:synth: Epos initialized" << endl;
// kdDebug() << "EposProc::synth: m_encText.length() = " << m_encText.length() << " text.length() = "
// << text.length() << endl;
if (!m_eposProc->writeStdin(m_encText, m_encText.length()))
kdDebug() << "EposProc::synth: Error writing to Epos client StdIn." << endl;
}
/**
* 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 EposProc::getFilename()
{
kdDebug() << "EposProc::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 EposProc::stopText(){
kdDebug() << "EposProc::stopText:: Running" << endl;
if (m_eposProc)
{
if (m_eposProc->isRunning())
{
kdDebug() << "EposProc::stopText: killing Epos." << endl;
m_waitingStop = true;
m_eposProc->kill();
} else m_state = psIdle;
} else m_state = psIdle;
kdDebug() << "EposProc::stopText: Epos stopped." << endl;
}
void EposProc::slotProcessExited(KProcess*)
{
// kdDebug() << "EposProc:slotProcessExited: Epos 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 EposProc::slotReceivedStdout(KProcess*, char* buffer, int buflen)
{
TQString buf = TQString::tqfromLatin1(buffer, buflen);
kdDebug() << "EposProc::slotReceivedStdout: Received output from Epos: " << buf << endl;
}
void EposProc::slotReceivedStderr(KProcess*, char* buffer, int buflen)
{
TQString buf = TQString::tqfromLatin1(buffer, buflen);
kdDebug() << "EposProc::slotReceivedStderr: Received error from Epos: " << buf << endl;
}
void EposProc::slotWroteStdin(KProcess*)
{
// kdDebug() << "EposProc::slotWroteStdin: closing Stdin" << endl;
m_eposProc->closeStdin();
m_encText = TQCString();
}
/**
* Return the current state of the plugin.
* This function only makes sense in asynchronous mode.
* @return The pluginState of the plugin.
*
* @see pluginState
*/
pluginState EposProc::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 EposProc::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 EposProc::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 EposProc::supportsSynth() { return true; }