summaryrefslogtreecommitdiffstats
path: root/kttsd/plugins/flite/fliteproc.cpp
blob: 1cb8b27a456b3c3d84ebed0dde408f5ce85ad96e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
/***************************************************** 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 <tdeconfig.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(TDEConfig* 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 TDEProcess;
    connect(m_fliteProc, TQT_SIGNAL(processExited(TDEProcess*)),
        this, TQT_SLOT(slotProcessExited(TDEProcess*)));
    connect(m_fliteProc, TQT_SIGNAL(receivedStdout(TDEProcess*, char*, int)),
        this, TQT_SLOT(slotReceivedStdout(TDEProcess*, char*, int)));
    connect(m_fliteProc, TQT_SIGNAL(receivedStderr(TDEProcess*, char*, int)),
        this, TQT_SLOT(slotReceivedStderr(TDEProcess*, char*, int)));
    connect(m_fliteProc, TQT_SIGNAL(wroteStdin(TDEProcess*)),
        this, TQT_SLOT(slotWroteStdin(TDEProcess* )));
    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(TDEProcess::NotifyOnExit, TDEProcess::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(TDEProcess*)
{
    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(TDEProcess*, char* buffer, int buflen)
{
    TQString buf = TQString::fromLatin1(buffer, buflen);
    kdDebug() << "FliteProc::slotReceivedStdout: Received output from Flite: " << buf << endl;
}

void FliteProc::slotReceivedStderr(TDEProcess*, char* buffer, int buflen)
{
    TQString buf = TQString::fromLatin1(buffer, buflen);
    kdDebug() << "FliteProc::slotReceivedStderr: Received error from Flite: " << buf << endl;
}

void FliteProc::slotWroteStdin(TDEProcess*)
{
    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; }