summaryrefslogtreecommitdiffstats
path: root/kttsd/plugins/festivalint/festivalintproc.cpp
blob: e11511b9fa9529a60872b8456847f27da5ee189a (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
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
/***************************************************** vim:set ts=4 sw=4 sts=4:
  Main speaking functions for the Festival (Interactive) 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 <tqthread.h>
#include <tqtextcodec.h>

// KDE includes.
#include <kdebug.h>
#include <kconfig.h>
#include <kstandarddirs.h>

// KTTS includes.
#include "utils.h"

// FestivalInt includes.
#include "festivalintproc.h"
#include "festivalintproc.moc"

/** Constructor */
FestivalIntProc::FestivalIntProc( TQObject* parent, const char* name, const TQStringList& ) : 
    PlugInProc( parent, name ){
    // kdDebug() << "FestivalIntProc::FestivalIntProc: Running" << endl;
    m_ready = true;
    m_writingStdin = false;
    m_waitingQueryVoices = false;
    m_waitingStop = false;
    m_festProc = 0;
    m_state = psIdle;
    m_supportsSSML = ssUnknown;
    m_languageCode = "en";
    m_codec = TQTextCodec::codecForName("ISO8859-1");
}

/** Destructor */
FestivalIntProc::~FestivalIntProc(){
    // kdDebug() << "FestivalIntProc::~FestivalIntProc: Running" << endl;
    if (m_festProc)
    {
        if (m_festProc->isRunning())
        {
            if (m_ready)
            {
                m_state = psIdle;
                // kdDebug() << "FestivalIntProc::~FestivalIntProc: telling Festival to quit." << endl;
                m_ready = false;
                m_waitingStop = true;
                m_festProc->writeStdin("(quit)", true);
            }
            else
            {
                // kdDebug() << "FestivalIntProc::~FestivalIntProc: killing Festival." << endl;
                m_waitingStop = true;
                m_festProc->kill();
            }
        }
        delete m_festProc;
    }
}

/** Initialize the speech */
bool FestivalIntProc::init(KConfig *config, const TQString &configGroup)
{
    // kdDebug() << "FestivalIntProc::init: Initializing plug in: Festival" << endl;

    config->setGroup(configGroup);
    m_voiceCode = config->readEntry("Voice");
    m_festivalExePath = config->readEntry("FestivalExecutablePath", "festival");
    // kdDebug() << "---- The code for the selected voice " << config->readEntry("Voice") << " is " << voiceCode << endl;
    m_time = config->readNumEntry("time", 100);
    m_pitch = config->readNumEntry("pitch", 100);
    m_volume = config->readNumEntry("volume", 100);
    // If voice should be pre-loaded, start Festival and load the voice.
    m_preload = config->readBoolEntry("Preload", false);
    m_languageCode = config->readEntry("LanguageCode", "en");
    m_supportsSSML = static_cast<SupportsSSML>(config->readNumEntry("SupportsSSML", ssUnknown));
    TQString codecName = config->readEntry("Codec", "Latin1");
    m_codec = codecNameToCodec(codecName);
    if (m_preload) startEngine(m_festivalExePath, m_voiceCode, m_languageCode, m_codec);
    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 FestivalIntProc::sayText(const TQString &text)
{
    synth(m_festivalExePath, text, TQString(), m_voiceCode, m_time, m_pitch, m_volume,
        m_languageCode, m_codec);
}

/**
* 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 FestivalIntProc::synthText(const TQString& text, const TQString& suggestedFilename)
{
    synth(m_festivalExePath, text, suggestedFilename, m_voiceCode, m_time, m_pitch, m_volume,
        m_languageCode, m_codec);
}

/**
* Sends command to Festival to query for a list of supported voice codes.
* Fires queryVoicesFinished when completed.
* @return                       False if busy doing something else and therefore cannot
*                               do the query.
*/
bool FestivalIntProc::queryVoices(const TQString &festivalExePath)
{
    // kdDebug() << "FestivalIntProc::queryVoices: Running" << endl;
    if (m_state != psIdle && m_waitingQueryVoices && m_waitingStop) return false;
    // Start Festival if not already running.
    startEngine(festivalExePath, TQString(), m_languageCode, m_codec);
    // Set state, waiting for voice codes list from Festival.
    m_waitingQueryVoices = true;
    // Voice rab_diphone is needed in order to support SSML.
    m_supportsSSML = ssUnknown;
    // Send command to query the voice codes.
    sendToFestival("(print (mapcar (lambda (pair) (car pair)) voice-locations))");
    return true;
}

/**
* Start Festival engine.
* @param festivalExePath         Path to the Festival executable, or just "festival".
* @param voiceCode               Voice code in which to speak text.
* @param languageCode            Language code, for example, "en".
*/
void FestivalIntProc::startEngine(const TQString &festivalExePath, const TQString &voiceCode,
    const TQString &languageCode, TQTextCodec* codec)
{
    // Initialize Festival only if it's not initialized.
    if (m_festProc)
    {
        // Stop Festival if a different EXE is requested or different language code.
        // If festProc exists but is not running, it is because it was stopped.
        if ((festivalExePath != m_festivalExePath) || !m_festProc->isRunning() ||
             (m_languageCode != languageCode) || (codec->name() != m_codec->name()))
        {
            delete m_festProc;
            m_festProc = 0;
        }
    }
    if(!m_festProc)
    {
        // kdDebug()<< "FestivalIntProc::startEngine: Creating Festival object" << endl;
        m_festProc = new KProcess;
        *m_festProc << festivalExePath;
        *m_festProc << "--interactive";
        m_festProc->setEnvironment("LANG", languageCode + "." + codec->mimeName());
        m_festProc->setEnvironment("LC_CTYPE", languageCode + "." + codec->mimeName());
        // kdDebug() << "FestivalIntProc::startEngine: setting LANG = LC_CTYPE = " << languageCode << "." << codec->mimeName() << endl;
        connect(m_festProc, TQT_SIGNAL(processExited(KProcess*)),
                this, TQT_SLOT(slotProcessExited(KProcess*)));
        connect(m_festProc, TQT_SIGNAL(receivedStdout(KProcess*, char*, int)),
                this, TQT_SLOT(slotReceivedStdout(KProcess*, char*, int)));
        connect(m_festProc, TQT_SIGNAL(receivedStderr(KProcess*, char*, int)),
                this, TQT_SLOT(slotReceivedStderr(KProcess*, char*, int)));
        connect(m_festProc, TQT_SIGNAL(wroteStdin(KProcess*)),
                this, TQT_SLOT(slotWroteStdin(KProcess*)));
    }
    if (!m_festProc->isRunning())
    {
        // kdDebug() << "FestivalIntProc::startEngine: Starting Festival process" << endl;
        m_runningVoiceCode = TQString();
        m_runningTime = 100;
        m_runningPitch = 100;
        m_ready = false;
        m_outputQueue.clear();
        if (m_festProc->start(KProcess::NotifyOnExit, KProcess::All))
        {
            // kdDebug()<< "FestivalIntProc:startEngine: Festival initialized" << endl;
            m_festivalExePath = festivalExePath;
            m_languageCode = languageCode;
            m_codec = codec;
            // Load the SABLE to Wave module.
            sendToFestival("(load \"" +
                KGlobal::dirs()->resourceDirs("data").last() + "kttsd/festivalint/sabletowave.scm\")");
        }
        else
        {
            kdDebug() << "FestivalIntProc::startEngine: Error starting Festival process.  Is festival in the PATH?" << endl;
            m_ready = true;
            m_state = psIdle;
            return;
        }
    }
    // If we just started Festival, or voiceCode has changed, send code to Festival.
    if (m_runningVoiceCode != voiceCode && !voiceCode.isEmpty()) {
        sendToFestival("(voice_" + voiceCode + ")");
        m_runningVoiceCode = voiceCode;
    }
}

/**
* Say or Synthesize text.
* @param festivalExePath         Path to the Festival executable, or just "festival".
* @param text                    The text to be synthesized.
* @param suggestedFilename       If not Null, synthesize only to this filename, otherwise
*                                synthesize and audibilize the text.
* @param voiceCode               Voice code in which to speak text.
* @param time                    Speed percentage. 50 to 200. 200% = 2x normal.
* @param pitch                   Pitch persentage.  50 to 200.
* @param volume                  Volume percentage.  50 to 200.
* @param languageCode            Language code, for example, "en".
*/
void FestivalIntProc::synth(
    const TQString &festivalExePath,
    const TQString &text,
    const TQString &synthFilename,
    const TQString &voiceCode,
    int time,
    int pitch,
    int volume,
    const TQString &languageCode,
    TQTextCodec* codec)
{
    // kdDebug() << "FestivalIntProc::synth: festivalExePath = " << festivalExePath
    //         << " voiceCode = " << voiceCode << endl;

    // Initialize Festival only if it's not initialized
    startEngine(festivalExePath, voiceCode, languageCode, codec);
    // If we just started Festival, or rate changed, tell festival.
    if (m_runningTime != time) {
        TQString timeMsg;
        if (voiceCode.contains("_hts") > 0)
        {
            // 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 0.15 to -0.15.
            float stretchValue = -float(slider) * 0.15 / 500.0;
            timeMsg = TQString("(set! hts_duration_stretch %1)").arg(
                    stretchValue, 0, 'f', 3);
        }
        else
            timeMsg = TQString("(Parameter.set 'Duration_Stretch %1)").arg(
                1.0/(float(time)/100.0), 0, 'f', 2);
        sendToFestival(timeMsg);
        m_runningTime = time;
    }
    // If we just started Festival, or pitch changed, tell festival.
    if (m_runningPitch != pitch) {
        // Pitch values range from 50 to 200 %, with 100% as the midpoint,
        // while frequency values range from 41 to 500 with 105 as the "midpoint".
        int pitchValue;
        if (pitch <= 100)
        {
            pitchValue = (((pitch - 50) * 64) / 50) + 41;
        }
        else
        {
            pitchValue = (((pitch - 100) * 395) / 100) + 105;
        }
        TQString pitchMsg = TQString(
            "(set! int_lr_params '((target_f0_mean %1) (target_f0_std 14)"
            "(model_f0_mean 170) (model_f0_std 34)))").arg(pitchValue, 0, 10);
        sendToFestival(pitchMsg);
        m_runningPitch = pitch;
    }

    TQString saidText = text;

    // Split really long sentences into shorter sentences, by looking for commas and converting
    // to periods.
    int len = saidText.length();
    while (len > c_tooLong)
    {
        len = saidText.findRev(", ", len - (c_tooLong * 2 / 3), true);
        if (len != -1)
        {
            TQString c = saidText.mid(len+2, 1);
            if (c != c.upper())
            {
                saidText.replace(len, 2, ". ");
                saidText.replace(len+2, 1, c.upper());
                kdDebug() << "FestivalIntProc::synth: Splitting long sentence at " << len << endl;
                // kdDebug() << saidText << endl;
            }
        }
    }

    // Encode quotation characters.
    saidText.replace("\\\"", "#!#!");
    saidText.replace("\"", "\\\"");
    saidText.replace("#!#!", "\\\"");
    // Remove certain comment characters.
    saidText.replace("--", "");

    // Ok, let's rock.
    if (synthFilename.isNull())
    {
        m_state = psSaying;
        m_synthFilename = TQString();
        // kdDebug() << "FestivalIntProc::synth: Saying text: '" << saidText << "' using Festival plug in with voice "
        //    << voiceCode << endl;
        saidText = "(SayText \"" + saidText + "\")";
        sendToFestival(saidText);
    } else {
        m_state = psSynthing;
        m_synthFilename = synthFilename;
        // Volume must be given for each utterance.
        // Volume values range from 50 to 200%, with 100% = normal.
        // Map onto rescale range of .5 to 2.
        float volumeValue = float(volume) / 100;
        // Expand to range .25 to 4.
        // float volumeValue = exp(log(volumeValue) * 2);
        // kdDebug() << "FestivalIntProc::synth: Synthing text: '" << saidText << "' using Festival plug in with voice "
        //    << voiceCode << endl;
        if (isSable(saidText))
        {
            // Synth the text and adjust volume.
            saidText =
                "(ktts_sabletowave \"" + saidText + "\" \"" +
                synthFilename + "\" " +
                TQString::number(volumeValue) + ")";
        }
        else
        {
            saidText =
                // Suppress pause at the beginning of each utterance.
                "(define (insert_initial_pause utt) "
                "(item.set_feat (utt.relation.first utt 'Segment) 'end 0.0))"
                // Synth the text and adjust volume.
                "(set! utt1 (Utterance Text \"" +  saidText + 
                "\"))(utt.synth utt1)" +
                "(utt.wave.rescale utt1 " + TQString::number(volumeValue) + " t)" +
                "(utt.save.wave utt1 \"" + synthFilename + "\")";
        }
        sendToFestival(saidText);
    }
}

/**
* If ready for more output, sends the given text to Festival process, otherwise,
* puts it in the queue.
* @param text                    Text to send or queue.
*/
void FestivalIntProc::sendToFestival(const TQString& text)
{
    if (text.isNull()) return;
    m_outputQueue.append(text);
    sendIfReady();
}

/**
* If Festival is ready for more input and there is more output to send, send it.
* To be ready for more input, the Stdin buffer must be empty and the "festival>"
* prompt must have been received (m_ready = true).
* @return                        False when Festival is ready for more input
*                                but there is nothing to be sent, or if Festival
*                                has exited.
*/
bool FestivalIntProc::sendIfReady()
{
    if (!m_ready) return true;
    if (m_writingStdin) return true;
    if (m_outputQueue.isEmpty()) return false;
    if (!m_festProc->isRunning()) return false;
    TQString text = m_outputQueue[0];
    text += "\n";
    TQCString encodedText;
    if (m_codec)
        encodedText = m_codec->fromUnicode(text);
    else
        encodedText = text.latin1();  // Should not happen, but just in case.
    m_outputQueue.pop_front();
    m_ready = false;
    // kdDebug() << "FestivalIntProc::sendIfReady: sending to Festival: " << text << endl;
    m_writingStdin = true;
    m_festProc->writeStdin(encodedText, encodedText.length());
    return true;
}

/**
* Determine if the text has SABLE tags.  If so, we will have to use a different
* synthesis method.
*/
bool FestivalIntProc::isSable(const TQString &text)
{
    return KttsUtils::hasRootElement( text, "SABLE" );
}

/**
* 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 FestivalIntProc::getFilename() { return m_synthFilename; }

/**
 * Stop text
 */
void FestivalIntProc::stopText(){
    // kdDebug() << "FestivalIntProc::stopText: Running" << endl;
    if (m_festProc)
    {
        if (m_festProc->isRunning())
        {
            if (m_ready)
                m_state = psIdle;
            else
            {
                // If using a preloaded voice, killing Festival is a bad idea because of
                // huge startup times.  So if synthing (not saying), let Festival continue
                // synthing.  When it completes, we will emit the stopped signal.
                if (m_preload && (m_state == psSynthing))
                {
                    m_waitingStop = true;
                    // kdDebug() << "FestivalIntProc::stopText: Optimizing stopText() for preloaded voice." << endl;
                }
                else
                {
                    // kdDebug() << "FestivalIntProc::stopText: killing Festival." << endl;
                    m_waitingStop = true;
                    m_festProc->kill();
                }
            }
        } else m_state = psIdle;
    } else m_state = psIdle;
}

void FestivalIntProc::slotProcessExited(KProcess*)
{
    // kdDebug() << "FestivalIntProc:slotProcessExited: Festival process has exited." << endl;
    m_ready = true;
    pluginState prevState = m_state;
    if (m_waitingStop || m_waitingQueryVoices)
    {
        if (m_waitingStop)
        {
            m_waitingStop = false;
            m_state = psIdle;
            // kdDebug() << "FestivalIntProc::slotProcessExited: emitting stopped signal" << endl;
            emit stopped();
        }
        if (m_waitingQueryVoices)
        {
            // kdDebug() << "FestivalIntProc::slotProcessExited: canceling queryVoices operation" << endl;
            m_waitingQueryVoices = false;
            m_state = psIdle;
        }
    } else {
        if (m_state != psIdle) m_state = psFinished;
        if (prevState == psSaying)
        {
            // kdDebug() << "FestivalIntProc::slotProcessExited: emitting sayFinished signal" << endl;
            emit sayFinished();
        } else
            if (prevState == psSynthing)
            {
                // kdDebug() << "FestivalIntProc::slotProcessExited: emitting synthFinished signal" << endl;
                emit synthFinished();
            }
    }
    delete m_festProc;
    m_festProc = 0;
    m_outputQueue.clear();
}

void FestivalIntProc::slotReceivedStdout(KProcess*, char* buffer, int buflen)
{
    TQString buf = TQString::fromLatin1(buffer, buflen);
    // kdDebug() << "FestivalIntProc::slotReceivedStdout: Received from Festival: " << buf << endl;
    bool promptSeen = (buf.contains("festival>") > 0);
    bool emitQueryVoicesFinished = false;
    TQStringList voiceCodesList;
    if (m_waitingQueryVoices && m_outputQueue.isEmpty())
    {
        // Look for opening ( and closing ).
        buf.simplifyWhiteSpace();
		if (buf.left(3) == "nil") {
			emitQueryVoicesFinished = true;
			m_waitingQueryVoices = false;
		} else {
			if (buf.left(1) == "(")
			{
				int rightParen = buf.find(')');
				if (rightParen > 0)
				{
					m_waitingQueryVoices = false;
					// Extract contents between parens.
					buf = buf.mid(1, rightParen - 1);
					// Space separated list.
					voiceCodesList = TQStringList::split(" ", buf, false);
					emitQueryVoicesFinished = true;
				}
			}
		}
    }
    if (promptSeen)
    {
        // kdDebug() << "FestivalIntProc::slotReceivedStdout: Prompt seen" << endl;
        m_ready = true;
        if (!sendIfReady())
        {
            // kdDebug() << "FestivalIntProc::slotReceivedStdout: All output sent. " << endl;
            pluginState prevState = m_state;
            if (m_state != psIdle) m_state = psFinished;
            if (prevState == psSaying)
            {
                // kdDebug() << "FestivalIntProc::slotReceivedStdout: emitting sayFinished signal" << endl;
                emit sayFinished();
            } else
                if (prevState == psSynthing)
                {
                    if (m_waitingStop)
                    {
                        m_waitingStop = false;
                        m_state = psIdle;
                        // kdDebug() << "FestivalIntProc::slotReceivedStdout: emitting optimized stopped signal" << endl;
                        emit stopped();
                    }
                    else
                    {
                        // kdDebug() << "FestivalIntProc::slotReceivedStdout: emitting synthFinished signal" << endl;
                        emit synthFinished();
                    }
                }
        }
    }
    if (emitQueryVoicesFinished)
    {
        // kdDebug() << "FestivalIntProc::slotReceivedStdout: emitting queryVoicesFinished" << endl;
        m_supportsSSML = (voiceCodesList.contains("rab_diphone")) ? ssYes : ssNo;
        emit queryVoicesFinished(voiceCodesList);
    }
}

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

void FestivalIntProc::slotWroteStdin(KProcess* /*proc*/)
{
    // kdDebug() << "FestivalIntProc::slotWroteStdin: Running" << endl;
    m_writingStdin = false;
    if (!sendIfReady())
    {
        // kdDebug() << "FestivalIntProc::slotWroteStdin: all output sent" << endl;
        pluginState prevState = m_state;
        if (m_state != psIdle) m_state = psFinished;
        if (prevState == psSaying)
        {
            // kdDebug() << "FestivalIntProc::slotWroteStdin: emitting sayFinished signal" << endl;
            emit sayFinished();
        } else
            if (prevState == psSynthing)
            {
                // kdDebug() << "FestivalIntProc::slotWroteStdin: emitting synthFinished signal" << endl;
                emit synthFinished();
            }
    }
}


bool FestivalIntProc::isReady() { return m_ready; }

/**
* Return the current state of the plugin.
* This function only makes sense in asynchronous mode.
* @return                        The pluginState of the plugin.
*
* @see pluginState
*/
pluginState FestivalIntProc::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 FestivalIntProc::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 FestivalIntProc::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 FestivalIntProc::supportsSynth() { return true; }

/**
* Returns the name of an XSLT stylesheet that will convert a valid SSML file
* into a format that can be processed by the synth.  For example,
* The Festival plugin returns a stylesheet that will convert SSML into
* SABLE.  Any tags the synth cannot handle should be stripped (leaving
* their text contents though).  The default stylesheet strips all
* tags and converts the file to plain text.
* @return            Name of the XSLT file.
*/
TQString FestivalIntProc::getSsmlXsltFilename()
{
    if (m_supportsSSML == ssYes)
        return KGlobal::dirs()->resourceDirs("data").last() + "kttsd/festivalint/xslt/SSMLtoSable.xsl";
    else
        return PlugInProc::getSsmlXsltFilename();
}