1 |
// qsamplerChannel.cpp |
2 |
// |
3 |
/**************************************************************************** |
4 |
Copyright (C) 2003-2005, rncbc aka Rui Nuno Capela. All rights reserved. |
5 |
|
6 |
This program is free software; you can redistribute it and/or |
7 |
modify it under the terms of the GNU General Public License |
8 |
as published by the Free Software Foundation; either version 2 |
9 |
of the License, or (at your option) any later version. |
10 |
|
11 |
This program is distributed in the hope that it will be useful, |
12 |
but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 |
GNU General Public License for more details. |
15 |
|
16 |
You should have received a copy of the GNU General Public License |
17 |
along with this program; if not, write to the Free Software |
18 |
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
19 |
|
20 |
*****************************************************************************/ |
21 |
|
22 |
#include "qsamplerChannel.h" |
23 |
|
24 |
#include "qsamplerMainForm.h" |
25 |
#include "qsamplerChannelForm.h" |
26 |
|
27 |
#include "config.h" |
28 |
|
29 |
#include <qfileinfo.h> |
30 |
|
31 |
#ifdef CONFIG_LIBGIG |
32 |
#include "gig.h" |
33 |
#endif |
34 |
|
35 |
#define QSAMPLER_INSTRUMENT_MAX 8 |
36 |
|
37 |
|
38 |
//------------------------------------------------------------------------- |
39 |
// qsamplerChannel - Sampler channel structure. |
40 |
// |
41 |
|
42 |
// Constructor. |
43 |
qsamplerChannel::qsamplerChannel ( qsamplerMainForm *pMainForm, int iChannelID ) |
44 |
{ |
45 |
m_pMainForm = pMainForm; |
46 |
m_iChannelID = iChannelID; |
47 |
|
48 |
// m_sEngineName = noEngineName(); |
49 |
// m_sInstrumentName = noInstrumentName(); |
50 |
// m_sInstrumentFile = m_sInstrumentName; |
51 |
m_iInstrumentNr = -1; |
52 |
m_iInstrumentStatus = -1; |
53 |
m_sMidiDriver = "Alsa"; // DEPRECATED. |
54 |
m_iMidiDevice = -1; |
55 |
m_iMidiPort = -1; |
56 |
m_iMidiChannel = -1; |
57 |
m_sAudioDriver = "Alsa"; // DEPRECATED. |
58 |
m_iAudioDevice = -1; |
59 |
m_fVolume = 0.0; |
60 |
|
61 |
} |
62 |
|
63 |
// Default destructor. |
64 |
qsamplerChannel::~qsamplerChannel (void) |
65 |
{ |
66 |
} |
67 |
|
68 |
|
69 |
// The global options settings delegated property. |
70 |
qsamplerOptions *qsamplerChannel::options (void) |
71 |
{ |
72 |
if (m_pMainForm == NULL) |
73 |
return NULL; |
74 |
|
75 |
return m_pMainForm->options(); |
76 |
} |
77 |
|
78 |
|
79 |
// The client descriptor delegated property. |
80 |
lscp_client_t *qsamplerChannel::client (void) |
81 |
{ |
82 |
if (m_pMainForm == NULL) |
83 |
return NULL; |
84 |
|
85 |
return m_pMainForm->client(); |
86 |
} |
87 |
|
88 |
|
89 |
// Create a new sampler channel, if not already. |
90 |
bool qsamplerChannel::addChannel (void) |
91 |
{ |
92 |
if (client() == NULL) |
93 |
return false; |
94 |
|
95 |
// Are we a new channel? |
96 |
if (m_iChannelID < 0) { |
97 |
m_iChannelID = ::lscp_add_channel(client()); |
98 |
if (m_iChannelID < 0) { |
99 |
appendMessagesClient("lscp_add_channel"); |
100 |
appendMessagesError(QObject::tr("Could not create the new channel.\n\nSorry.")); |
101 |
} // Otherwise it's created... |
102 |
else appendMessages(QObject::tr("Channel %1 created.").arg(m_iChannelID)); |
103 |
} |
104 |
|
105 |
// Return whether we're a valid channel... |
106 |
return (m_iChannelID >= 0); |
107 |
} |
108 |
|
109 |
|
110 |
// Remove sampler channel. |
111 |
bool qsamplerChannel::removeChannel (void) |
112 |
{ |
113 |
if (client() == NULL) |
114 |
return false; |
115 |
|
116 |
// Are we an existing channel? |
117 |
if (m_iChannelID >= 0) { |
118 |
if (::lscp_remove_channel(client(), m_iChannelID) != LSCP_OK) { |
119 |
appendMessagesClient("lscp_remove_channel"); |
120 |
appendMessagesError(QObject::tr("Could not remove channel.\n\nSorry.")); |
121 |
} else { |
122 |
// Otherwise it's removed. |
123 |
appendMessages(QObject::tr("Channel %1 removed.").arg(m_iChannelID)); |
124 |
m_iChannelID = -1; |
125 |
} |
126 |
} |
127 |
|
128 |
// Return whether we've removed the channel... |
129 |
return (m_iChannelID < 0); |
130 |
} |
131 |
|
132 |
|
133 |
// Channel-ID (aka Sammpler-Channel) accessors. |
134 |
int qsamplerChannel::channelID (void) |
135 |
{ |
136 |
return m_iChannelID; |
137 |
} |
138 |
|
139 |
void qsamplerChannel::setChannelID ( int iChannelID ) |
140 |
{ |
141 |
m_iChannelID = iChannelID; |
142 |
} |
143 |
|
144 |
|
145 |
// Readable channel name. |
146 |
QString qsamplerChannel::channelName (void) |
147 |
{ |
148 |
return (m_iChannelID < 0 ? QObject::tr("New Channel") : QObject::tr("Channel %1").arg(m_iChannelID)); |
149 |
} |
150 |
|
151 |
|
152 |
// Engine name accessors. |
153 |
QString& qsamplerChannel::engineName (void) |
154 |
{ |
155 |
return m_sEngineName; |
156 |
} |
157 |
|
158 |
bool qsamplerChannel::loadEngine ( const QString& sEngineName ) |
159 |
{ |
160 |
if (client() == NULL || m_iChannelID < 0) |
161 |
return false; |
162 |
|
163 |
if (::lscp_load_engine(client(), sEngineName.latin1(), m_iChannelID) != LSCP_OK) { |
164 |
appendMessagesClient("lscp_load_engine"); |
165 |
return false; |
166 |
} |
167 |
|
168 |
m_sEngineName = sEngineName; |
169 |
return true; |
170 |
} |
171 |
|
172 |
|
173 |
// Instrument filename accessor. |
174 |
QString& qsamplerChannel::instrumentFile (void) |
175 |
{ |
176 |
return m_sInstrumentFile; |
177 |
} |
178 |
|
179 |
// Instrument index accessor. |
180 |
int qsamplerChannel::instrumentNr (void) |
181 |
{ |
182 |
return m_iInstrumentNr; |
183 |
} |
184 |
|
185 |
// Instrument name accessor. |
186 |
QString& qsamplerChannel::instrumentName (void) |
187 |
{ |
188 |
return m_sInstrumentName; |
189 |
} |
190 |
|
191 |
// Instrument status accessor. |
192 |
int qsamplerChannel::instrumentStatus (void) |
193 |
{ |
194 |
return m_iInstrumentStatus; |
195 |
} |
196 |
|
197 |
// Instrument file loader. |
198 |
bool qsamplerChannel::loadInstrument ( const QString& sInstrumentFile, int iInstrumentNr ) |
199 |
{ |
200 |
if (client() == NULL || m_iChannelID < 0) |
201 |
return false; |
202 |
if (!isInstrumentFile(sInstrumentFile)) |
203 |
return false; |
204 |
|
205 |
if (::lscp_load_instrument_non_modal(client(), sInstrumentFile.latin1(), iInstrumentNr, m_iChannelID) != LSCP_OK) { |
206 |
appendMessagesClient("lscp_load_instrument"); |
207 |
return false; |
208 |
} |
209 |
|
210 |
return setInstrument(sInstrumentFile, iInstrumentNr); |
211 |
} |
212 |
|
213 |
|
214 |
// Special instrument file/name/number settler. |
215 |
bool qsamplerChannel::setInstrument ( const QString& sInstrumentFile, int iInstrumentNr ) |
216 |
{ |
217 |
m_sInstrumentFile = sInstrumentFile; |
218 |
m_iInstrumentNr = iInstrumentNr; |
219 |
#ifdef CONFIG_INSTRUMENT_NAME |
220 |
m_sInstrumentName = QString::null; // We'll get it, maybe later, on channel_info... |
221 |
#else |
222 |
m_sInstrumentName = getInstrumentName(sInstrumentFile, iInstrumentNr, true); |
223 |
#endif |
224 |
m_iInstrumentStatus = 0; |
225 |
|
226 |
return true; |
227 |
} |
228 |
|
229 |
|
230 |
// MIDI driver type accessors (DEPRECATED). |
231 |
QString& qsamplerChannel::midiDriver (void) |
232 |
{ |
233 |
return m_sMidiDriver; |
234 |
} |
235 |
|
236 |
bool qsamplerChannel::setMidiDriver ( const QString& sMidiDriver ) |
237 |
{ |
238 |
if (client() == NULL || m_iChannelID < 0) |
239 |
return false; |
240 |
|
241 |
if (::lscp_set_channel_midi_type(client(), m_iChannelID, sMidiDriver.latin1()) != LSCP_OK) { |
242 |
appendMessagesClient("lscp_set_channel_midi_type"); |
243 |
return false; |
244 |
} |
245 |
|
246 |
m_sMidiDriver = sMidiDriver; |
247 |
return true; |
248 |
} |
249 |
|
250 |
|
251 |
// MIDI device accessors. |
252 |
int qsamplerChannel::midiDevice (void) |
253 |
{ |
254 |
return m_iMidiDevice; |
255 |
} |
256 |
|
257 |
bool qsamplerChannel::setMidiDevice ( int iMidiDevice ) |
258 |
{ |
259 |
if (client() == NULL || m_iChannelID < 0) |
260 |
return false; |
261 |
|
262 |
if (::lscp_set_channel_midi_device(client(), m_iChannelID, iMidiDevice) != LSCP_OK) { |
263 |
appendMessagesClient("lscp_set_channel_midi_device"); |
264 |
return false; |
265 |
} |
266 |
|
267 |
m_iMidiDevice = iMidiDevice; |
268 |
return true; |
269 |
} |
270 |
|
271 |
|
272 |
// MIDI port number accessor. |
273 |
int qsamplerChannel::midiPort (void) |
274 |
{ |
275 |
return m_iMidiPort; |
276 |
} |
277 |
|
278 |
bool qsamplerChannel::setMidiPort ( int iMidiPort ) |
279 |
{ |
280 |
if (client() == NULL || m_iChannelID < 0) |
281 |
return false; |
282 |
|
283 |
if (::lscp_set_channel_midi_port(client(), m_iChannelID, iMidiPort) != LSCP_OK) { |
284 |
appendMessagesClient("lscp_set_channel_midi_port"); |
285 |
return false; |
286 |
} |
287 |
|
288 |
m_iMidiPort = iMidiPort; |
289 |
return true; |
290 |
} |
291 |
|
292 |
|
293 |
// MIDI channel accessor. |
294 |
int qsamplerChannel::midiChannel (void) |
295 |
{ |
296 |
return m_iMidiChannel; |
297 |
} |
298 |
|
299 |
bool qsamplerChannel::setMidiChannel ( int iMidiChannel ) |
300 |
{ |
301 |
if (client() == NULL || m_iChannelID < 0) |
302 |
return false; |
303 |
|
304 |
if (::lscp_set_channel_midi_channel(client(), m_iChannelID, iMidiChannel) != LSCP_OK) { |
305 |
appendMessagesClient("lscp_set_channel_midi_channel"); |
306 |
return false; |
307 |
} |
308 |
|
309 |
m_iMidiChannel = iMidiChannel; |
310 |
return true; |
311 |
} |
312 |
|
313 |
|
314 |
// Audio device accessor. |
315 |
int qsamplerChannel::audioDevice (void) |
316 |
{ |
317 |
return m_iAudioDevice; |
318 |
} |
319 |
|
320 |
bool qsamplerChannel::setAudioDevice ( int iAudioDevice ) |
321 |
{ |
322 |
if (client() == NULL || m_iChannelID < 0) |
323 |
return false; |
324 |
|
325 |
if (::lscp_set_channel_audio_device(client(), m_iChannelID, iAudioDevice) != LSCP_OK) { |
326 |
appendMessagesClient("lscp_set_channel_audio_device"); |
327 |
return false; |
328 |
} |
329 |
|
330 |
m_iAudioDevice = iAudioDevice; |
331 |
return true; |
332 |
} |
333 |
|
334 |
|
335 |
// Audio driver type accessors (DEPRECATED). |
336 |
QString& qsamplerChannel::audioDriver (void) |
337 |
{ |
338 |
return m_sAudioDriver; |
339 |
} |
340 |
|
341 |
bool qsamplerChannel::setAudioDriver ( const QString& sAudioDriver ) |
342 |
{ |
343 |
if (client() == NULL || m_iChannelID < 0) |
344 |
return false; |
345 |
|
346 |
if (::lscp_set_channel_audio_type(client(), m_iChannelID, sAudioDriver.latin1()) != LSCP_OK) { |
347 |
appendMessagesClient("lscp_set_channel_audio_type"); |
348 |
return false; |
349 |
} |
350 |
|
351 |
m_sAudioDriver = sAudioDriver; |
352 |
return true; |
353 |
} |
354 |
|
355 |
|
356 |
// Channel volume accessors. |
357 |
float qsamplerChannel::volume (void) |
358 |
{ |
359 |
return m_fVolume; |
360 |
} |
361 |
|
362 |
bool qsamplerChannel::setVolume ( float fVolume ) |
363 |
{ |
364 |
if (client() == NULL || m_iChannelID < 0) |
365 |
return false; |
366 |
|
367 |
if (::lscp_set_channel_volume(client(), m_iChannelID, fVolume) != LSCP_OK) { |
368 |
appendMessagesClient("lscp_set_channel_volume"); |
369 |
return false; |
370 |
} |
371 |
|
372 |
m_fVolume = fVolume; |
373 |
return true; |
374 |
} |
375 |
|
376 |
|
377 |
// Istrument name remapper. |
378 |
void qsamplerChannel::updateInstrumentName (void) |
379 |
{ |
380 |
#ifndef CONFIG_INSTRUMENT_NAME |
381 |
m_sInstrumentName = getInstrumentName(m_sInstrumentFile, |
382 |
m_iInstrumentNr, (options() && options()->bInstrumentNames)); |
383 |
#endif |
384 |
} |
385 |
|
386 |
|
387 |
// Update whole channel info state. |
388 |
bool qsamplerChannel::updateChannelInfo (void) |
389 |
{ |
390 |
if (client() == NULL || m_iChannelID < 0) |
391 |
return false; |
392 |
|
393 |
// Read channel information. |
394 |
lscp_channel_info_t *pChannelInfo = ::lscp_get_channel_info(client(), m_iChannelID); |
395 |
if (pChannelInfo == NULL) { |
396 |
appendMessagesClient("lscp_get_channel_info"); |
397 |
appendMessagesError(QObject::tr("Could not get channel information.\n\nSorry.")); |
398 |
return false; |
399 |
} |
400 |
|
401 |
#ifdef CONFIG_INSTRUMENT_NAME |
402 |
// We got all actual instrument datum... |
403 |
m_sInstrumentFile = pChannelInfo->instrument_file; |
404 |
m_iInstrumentNr = pChannelInfo->instrument_nr; |
405 |
m_sInstrumentName = pChannelInfo->instrument_name; |
406 |
#else |
407 |
// First, check if intrument name has changed, |
408 |
// taking care that instrument name lookup might be expensive, |
409 |
// so we better make it only once and when really needed... |
410 |
if ((m_sInstrumentFile != pChannelInfo->instrument_file) || |
411 |
(m_iInstrumentNr != pChannelInfo->instrument_nr)) { |
412 |
m_sInstrumentFile = pChannelInfo->instrument_file; |
413 |
m_iInstrumentNr = pChannelInfo->instrument_nr; |
414 |
updateInstrumentName(); |
415 |
} |
416 |
#endif |
417 |
// Cache in other channel information. |
418 |
m_sEngineName = pChannelInfo->engine_name; |
419 |
m_iInstrumentStatus = pChannelInfo->instrument_status; |
420 |
m_iMidiDevice = pChannelInfo->midi_device; |
421 |
m_iMidiPort = pChannelInfo->midi_port; |
422 |
m_iMidiChannel = pChannelInfo->midi_channel; |
423 |
m_iAudioDevice = pChannelInfo->audio_device; |
424 |
m_fVolume = pChannelInfo->volume; |
425 |
// Some sanity checks. |
426 |
if (m_sEngineName == "NONE") |
427 |
m_sEngineName = QString::null; |
428 |
if (m_sInstrumentFile == "NONE") { |
429 |
m_sInstrumentFile = QString::null; |
430 |
m_sInstrumentName = QString::null; |
431 |
} |
432 |
|
433 |
return true; |
434 |
} |
435 |
|
436 |
|
437 |
// Reset channel method. |
438 |
bool qsamplerChannel::resetChannel (void) |
439 |
{ |
440 |
if (client() == NULL || m_iChannelID < 0) |
441 |
return false; |
442 |
|
443 |
if (::lscp_reset_channel(client(), m_iChannelID) != LSCP_OK) { |
444 |
appendMessagesClient("lscp_reset_channel"); |
445 |
return false; |
446 |
} |
447 |
|
448 |
appendMessages(QObject::tr("Channel %1 reset.").arg(m_iChannelID)); |
449 |
return true; |
450 |
} |
451 |
|
452 |
|
453 |
// Channel setup dialog form. |
454 |
bool qsamplerChannel::channelSetup ( QWidget *pParent ) |
455 |
{ |
456 |
bool bResult = false; |
457 |
|
458 |
qsamplerChannelForm *pChannelForm = new qsamplerChannelForm(pParent); |
459 |
if (pChannelForm) { |
460 |
pChannelForm->setup(this); |
461 |
bResult = pChannelForm->exec(); |
462 |
delete pChannelForm; |
463 |
} |
464 |
|
465 |
return bResult; |
466 |
} |
467 |
|
468 |
|
469 |
// Redirected messages output methods. |
470 |
void qsamplerChannel::appendMessages( const QString& s ) |
471 |
{ |
472 |
if (m_pMainForm) m_pMainForm->appendMessages(s); |
473 |
} |
474 |
|
475 |
void qsamplerChannel::appendMessagesColor( const QString& s, const QString& c ) |
476 |
{ |
477 |
if (m_pMainForm) m_pMainForm->appendMessagesColor(s, c); |
478 |
} |
479 |
|
480 |
void qsamplerChannel::appendMessagesText( const QString& s ) |
481 |
{ |
482 |
if (m_pMainForm) m_pMainForm->appendMessagesText(s); |
483 |
} |
484 |
|
485 |
void qsamplerChannel::appendMessagesError( const QString& s ) |
486 |
{ |
487 |
if (m_pMainForm) m_pMainForm->appendMessagesError(s); |
488 |
} |
489 |
|
490 |
void qsamplerChannel::appendMessagesClient( const QString& s ) |
491 |
{ |
492 |
if (m_pMainForm) m_pMainForm->appendMessagesClient(s); |
493 |
} |
494 |
|
495 |
|
496 |
// Context menu event handler. |
497 |
void qsamplerChannel::contextMenuEvent( QContextMenuEvent *pEvent ) |
498 |
{ |
499 |
if (m_pMainForm) m_pMainForm->contextMenuEvent(pEvent); |
500 |
} |
501 |
|
502 |
|
503 |
// FIXME: Check whether a given file is an instrument file. |
504 |
bool qsamplerChannel::isInstrumentFile ( const QString& sInstrumentFile ) |
505 |
{ |
506 |
bool bResult = false; |
507 |
|
508 |
QFile file(sInstrumentFile); |
509 |
if (file.open(IO_ReadOnly)) { |
510 |
char achHeader[4]; |
511 |
if (file.readBlock(achHeader, 4)) { |
512 |
bResult = (achHeader[0] == 'R' |
513 |
&& achHeader[1] == 'I' |
514 |
&& achHeader[2] == 'F' |
515 |
&& achHeader[3] == 'F'); |
516 |
} |
517 |
file.close(); |
518 |
} |
519 |
|
520 |
return bResult; |
521 |
} |
522 |
|
523 |
|
524 |
// Retrieve the instrument list of a instrument file (.gig). |
525 |
QStringList qsamplerChannel::getInstrumentList( const QString& sInstrumentFile, |
526 |
bool bInstrumentNames ) |
527 |
{ |
528 |
QString sInstrumentName = QFileInfo(sInstrumentFile).fileName(); |
529 |
QStringList instlist; |
530 |
|
531 |
if (isInstrumentFile(sInstrumentFile)) { |
532 |
#ifdef CONFIG_LIBGIG |
533 |
if (bInstrumentNames) { |
534 |
RIFF::File *pRiff = new RIFF::File(sInstrumentFile); |
535 |
gig::File *pGig = new gig::File(pRiff); |
536 |
gig::Instrument *pInstrument = pGig->GetFirstInstrument(); |
537 |
while (pInstrument) { |
538 |
instlist.append((pInstrument->pInfo)->Name.c_str()); |
539 |
pInstrument = pGig->GetNextInstrument(); |
540 |
} |
541 |
delete pGig; |
542 |
delete pRiff; |
543 |
} |
544 |
else |
545 |
#endif |
546 |
for (int iInstrumentNr = 0; iInstrumentNr < QSAMPLER_INSTRUMENT_MAX; iInstrumentNr++) |
547 |
instlist.append(sInstrumentName + " [" + QString::number(iInstrumentNr) + "]"); |
548 |
} |
549 |
else instlist.append(noInstrumentName()); |
550 |
|
551 |
return instlist; |
552 |
} |
553 |
|
554 |
|
555 |
// Retrieve the spacific instrument name of a instrument file (.gig), given its index. |
556 |
QString qsamplerChannel::getInstrumentName( const QString& sInstrumentFile, |
557 |
int iInstrumentNr, bool bInstrumentNames ) |
558 |
{ |
559 |
QString sInstrumentName; |
560 |
|
561 |
if (isInstrumentFile(sInstrumentFile)) { |
562 |
sInstrumentName = QFileInfo(sInstrumentFile).fileName(); |
563 |
#ifdef CONFIG_LIBGIG |
564 |
if (bInstrumentNames) { |
565 |
RIFF::File *pRiff = new RIFF::File(sInstrumentFile); |
566 |
gig::File *pGig = new gig::File(pRiff); |
567 |
int iIndex = 0; |
568 |
gig::Instrument *pInstrument = pGig->GetFirstInstrument(); |
569 |
while (pInstrument) { |
570 |
if (iIndex == iInstrumentNr) { |
571 |
sInstrumentName = (pInstrument->pInfo)->Name.c_str(); |
572 |
break; |
573 |
} |
574 |
iIndex++; |
575 |
pInstrument = pGig->GetNextInstrument(); |
576 |
} |
577 |
delete pGig; |
578 |
delete pRiff; |
579 |
} |
580 |
else |
581 |
#endif |
582 |
sInstrumentName += " [" + QString::number(iInstrumentNr) + "]"; |
583 |
} |
584 |
else sInstrumentName = noInstrumentName(); |
585 |
|
586 |
return sInstrumentName; |
587 |
} |
588 |
|
589 |
|
590 |
// Common invalid name-helpers. |
591 |
QString qsamplerChannel::noEngineName (void) |
592 |
{ |
593 |
return QObject::tr("(No engine)"); |
594 |
} |
595 |
|
596 |
QString qsamplerChannel::noInstrumentName (void) |
597 |
{ |
598 |
return QObject::tr("(No instrument)"); |
599 |
} |
600 |
|
601 |
|
602 |
// end of qsamplerChannel.cpp |