/[svn]/linuxsampler/trunk/src/Sampler.cpp
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Contents of /linuxsampler/trunk/src/Sampler.cpp

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Revision 2500 - (show annotations) (download)
Fri Jan 10 12:20:05 2014 UTC (10 years, 2 months ago) by schoenebeck
File size: 35880 byte(s)
* Added support for multiple MIDI input ports per sampler channel (added
  various new C++ API methods for this new feature/design, old C++ API
  methods are now marked as deprecated but should still provide full
  behavior backward compatibility).
* LSCP Network interface: Added the following new LSCP commands for the new
  feature mentioned above: "ADD CHANNEL MIDI_INPUT",
  "REMOVE CHANNEL MIDI_INPUT" and "LIST CHANNEL MIDI_INPUTS". As with the
  C++ API changes, the old LSCP commands for MIDI input management are now
  marked as deprecated, but are still there and should provide full behavior
  backward compatibility.
* New LSCP specification document (LSCP v1.6).
* AbstractEngine::GSCheckSum(): don't allocate memory on the stack (was
  unsafe and caused compilation error with old clang 2.x).
* Bumped version (1.0.0.svn25).

1 /***************************************************************************
2 * *
3 * LinuxSampler - modular, streaming capable sampler *
4 * *
5 * Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck *
6 * Copyright (C) 2005 - 2014 Christian Schoenebeck *
7 * *
8 * This library is free software; you can redistribute it and/or modify *
9 * it under the terms of the GNU General Public License as published by *
10 * the Free Software Foundation; either version 2 of the License, or *
11 * (at your option) any later version. *
12 * *
13 * This library is distributed in the hope that it will be useful, *
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
16 * GNU General Public License for more details. *
17 * *
18 * You should have received a copy of the GNU General Public License *
19 * along with this library; if not, write to the Free Software *
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, *
21 * MA 02111-1307 USA *
22 ***************************************************************************/
23
24 #include <sstream>
25
26 #include "Sampler.h"
27
28 #include "common/global_private.h"
29 #include "engines/EngineFactory.h"
30 #include "engines/EngineChannelFactory.h"
31 #include "plugins/InstrumentEditorFactory.h"
32 #include "drivers/audio/AudioOutputDeviceFactory.h"
33 #include "drivers/midi/MidiInputDeviceFactory.h"
34 #include "drivers/midi/MidiInstrumentMapper.h"
35 #include "common/Features.h"
36 #include "network/lscpserver.h"
37
38 namespace LinuxSampler {
39
40 // ******************************************************************
41 // * SamplerChannel
42
43 SamplerChannel::SamplerChannel(Sampler* pS) {
44 pSampler = pS;
45 pEngineChannel = NULL;
46 pAudioOutputDevice = NULL;
47 iMidiPort = 0;
48 midiChannel = midi_chan_all;
49 iIndex = -1;
50 }
51
52 SamplerChannel::~SamplerChannel() {
53 if (pEngineChannel) {
54 Engine* engine = pEngineChannel->GetEngine();
55 if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(engine);
56
57 if (pEngineChannel) {
58 pEngineChannel->DisconnectAllMidiInputPorts();
59
60 if (pAudioOutputDevice) pEngineChannel->DisconnectAudioOutputDevice();
61 EngineChannelFactory::Destroy(pEngineChannel);
62
63 // reconnect engine if it still exists
64 const std::set<Engine*>& engines = EngineFactory::EngineInstances();
65 if (engines.find(engine) != engines.end()) pAudioOutputDevice->Connect(engine);
66 }
67 }
68 }
69
70 void SamplerChannel::SetEngineType(String EngineType) throw (Exception) {
71 dmsg(2,("SamplerChannel: Assigning engine type..."));
72
73 if (pEngineChannel) {
74 if (!strcasecmp(pEngineChannel->EngineName().c_str(), EngineType.c_str())) {
75 dmsg(2,("OK\n"));
76 return;
77 }
78 }
79
80 fireEngineToBeChanged();
81
82 // create new engine channel
83 EngineChannel* pNewEngineChannel = EngineChannelFactory::Create(EngineType);
84 if (!pNewEngineChannel) throw Exception("Unknown engine type");
85
86 // remember current MIDI input connections
87 std::vector<MidiInputPort*> vMidiInputs = GetMidiInputPorts();
88 midi_chan_t midiChannel = GetMidiInputChannel();
89
90 try {
91 pNewEngineChannel->SetSamplerChannel(this);
92
93 // disconnect old engine channel
94 if (pEngineChannel) {
95 Engine* engine = pEngineChannel->GetEngine();
96 if (pAudioOutputDevice) pAudioOutputDevice->Disconnect(engine);
97
98 pEngineChannel->DisconnectAllMidiInputPorts();
99 if (pAudioOutputDevice) pEngineChannel->DisconnectAudioOutputDevice();
100 EngineChannelFactory::Destroy(pEngineChannel);
101 pEngineChannel = NULL;
102
103 // reconnect engine if it still exists
104 const std::set<Engine*>& engines = EngineFactory::EngineInstances();
105 if (engines.find(engine) != engines.end()) pAudioOutputDevice->Connect(engine);
106 }
107
108 // connect new engine channel
109 if (pAudioOutputDevice) {
110 pNewEngineChannel->Connect(pAudioOutputDevice);
111 pAudioOutputDevice->Connect(pNewEngineChannel->GetEngine());
112 }
113 pNewEngineChannel->SetMidiChannel(midiChannel);
114 for (int i = 0; i < vMidiInputs.size(); ++i) {
115 pNewEngineChannel->Connect(vMidiInputs[i]);
116 }
117 } catch (...) {
118 EngineChannelFactory::Destroy(pNewEngineChannel);
119 throw; // re-throw the same exception
120 }
121 pEngineChannel = pNewEngineChannel;
122
123 // from now on get MIDI input ports from EngineChannel object
124 this->vMidiInputs.clear();
125 this->iMidiPort = 0;
126
127 pEngineChannel->StatusChanged(true);
128 fireEngineChanged();
129 dmsg(2,("OK\n"));
130 }
131
132 void SamplerChannel::SetAudioOutputDevice(AudioOutputDevice* pDevice) throw (Exception) {
133 if(pAudioOutputDevice == pDevice) return;
134
135 // disconnect old device
136 if (pAudioOutputDevice && pEngineChannel) {
137 if (!pAudioOutputDevice->isAutonomousDevice())
138 throw Exception("The audio output device '" + pAudioOutputDevice->Driver() + "' cannot be dropped from this sampler channel!");
139
140 Engine* engine = pEngineChannel->GetEngine();
141 pAudioOutputDevice->Disconnect(engine);
142
143 pEngineChannel->DisconnectAudioOutputDevice();
144
145 // reconnect engine if it still exists
146 const std::set<Engine*>& engines = EngineFactory::EngineInstances();
147 if (engines.find(engine) != engines.end()) pAudioOutputDevice->Connect(engine);
148 }
149
150 // connect new device
151 pAudioOutputDevice = pDevice;
152 if (pEngineChannel) {
153 pEngineChannel->Connect(pAudioOutputDevice);
154 pAudioOutputDevice->Connect(pEngineChannel->GetEngine());
155 }
156 }
157
158 void SamplerChannel::Connect(MidiInputPort* pPort) throw (Exception) {
159 if (!pPort) throw Exception("No MIDI input port provided");
160
161 // prevent attempts to connect non-autonomous MIDI ports
162 // (host plugins like VST, AU, LV2, DSSI)
163 if (!pPort->GetDevice()->isAutonomousDevice())
164 throw Exception("The MIDI input port '" + pPort->GetDevice()->Driver() + "' cannot be managed manually!");
165
166 std::vector<MidiInputPort*> vMidiPorts = GetMidiInputPorts();
167
168 // ignore if port is already connected
169 for (int i = 0; i < vMidiPorts.size(); ++i) {
170 if (vMidiPorts[i] == pPort) return;
171 }
172
173 // connect this new port
174 if (pEngineChannel) {
175 pEngineChannel->Connect(pPort);
176 } else { // no engine channel yet, remember it for future connection ...
177 const midi_conn_t c = {
178 pPort->GetDevice()->MidiInputDeviceID(),
179 pPort->GetPortNumber()
180 };
181 this->vMidiInputs.push_back(c);
182 }
183 }
184
185 void SamplerChannel::Disconnect(MidiInputPort* pPort) throw (Exception) {
186 if (!pPort) return;
187
188 // prevent attempts to alter channels with non-autonomous devices
189 // (host plugins like VST, AU, LV2, DSSI)
190 if (!pPort->GetDevice()->isAutonomousDevice())
191 throw Exception("The MIDI input port '" + pPort->GetDevice()->Driver() + "' cannot be managed manually!");
192
193 // disconnect this port
194 if (pEngineChannel) {
195 pEngineChannel->Disconnect(pPort);
196 } else { // no engine channel yet, forget it regarding future connection ...
197 const midi_conn_t c = {
198 pPort->GetDevice()->MidiInputDeviceID(),
199 pPort->GetPortNumber()
200 };
201 for (int i = this->vMidiInputs.size() - 1; i >= 0; --i) {
202 if (this->vMidiInputs[i] == c)
203 this->vMidiInputs.erase(this->vMidiInputs.begin() + i);
204 // no break or return here, for safety reasons
205 // (just in case there were really duplicates for some reason)
206 }
207 }
208 }
209
210 void SamplerChannel::DisconnectAllMidiInputPorts() throw (Exception) {
211 std::vector<MidiInputPort*> vMidiPorts = GetMidiInputPorts();
212 for (int i = 0; i < vMidiPorts.size(); ++i) Disconnect(vMidiPorts[i]);
213 }
214
215 std::vector<MidiInputPort*> SamplerChannel::GetMidiInputPorts() {
216 std::vector<MidiInputPort*> v;
217 if (pEngineChannel) {
218 MidiInputPort* pPort = pEngineChannel->GetMidiInputPort(0);
219 for (int i = 0; pPort; pPort = pEngineChannel->GetMidiInputPort(++i))
220 v.push_back(pPort);
221 } else {
222 for (int i = 0; i < this->vMidiInputs.size(); ++i) {
223 MidiInputPort* pPort = _getPortForID(this->vMidiInputs[i]);
224 if (pPort) v.push_back(pPort);
225 }
226 }
227 return v;
228 }
229
230 void SamplerChannel::SetMidiInputDevice(MidiInputDevice* pDevice) throw (Exception) {
231 SetMidiInput(pDevice, 0, GetMidiInputChannel());
232 }
233
234 void SamplerChannel::SetMidiInputPort(int MidiPort) throw (Exception) {
235 SetMidiInput(GetMidiInputDevice(), MidiPort, GetMidiInputChannel());
236 }
237
238 void SamplerChannel::SetMidiInputChannel(midi_chan_t MidiChannel) {
239 if (!isValidMidiChan(MidiChannel)) throw Exception("Invalid MIDI channel (" + ToString(int(MidiChannel)) + ")");
240 if (pEngineChannel) pEngineChannel->SetMidiChannel(MidiChannel);
241 this->midiChannel = MidiChannel;
242 }
243
244 void SamplerChannel::SetMidiInput(MidiInputDevice* pDevice, int iMidiPort, midi_chan_t MidiChannel) throw (Exception) {
245 if (!pDevice) throw Exception("No MIDI input device assigned.");
246
247 // apply new MIDI channel
248 SetMidiInputChannel(MidiChannel);
249
250 MidiInputPort* pNewPort = pDevice->GetPort(iMidiPort);
251 if (!pNewPort) throw Exception("There is no MIDI input port with index " + ToString(iMidiPort) + ".");
252
253 std::vector<MidiInputPort*> vMidiPorts = GetMidiInputPorts();
254
255 // prevent attempts to remove non-autonomous MIDI ports
256 // (host plugins like VST, AU, LV2, DSSI)
257 for (int i = 0; i < vMidiPorts.size(); ++i) {
258 if (vMidiPorts[i] == pNewPort) continue;
259 if (!vMidiPorts[i]->GetDevice()->isAutonomousDevice())
260 throw Exception("The MIDI input port '" + vMidiPorts[i]->GetDevice()->Driver() + "' cannot be altered on this sampler channel!");
261 }
262
263 if (pEngineChannel) {
264 // remove all current connections
265 pEngineChannel->DisconnectAllMidiInputPorts();
266 // create the new connection (alone)
267 pEngineChannel->Connect(pNewPort);
268 } else { // if there is no engine channel yet, then store connection for future ...
269 // delete all previously scheduled connections
270 this->vMidiInputs.clear();
271 // store the new connection (alone)
272 const midi_conn_t c = {
273 pNewPort->GetDevice()->MidiInputDeviceID(),
274 pNewPort->GetPortNumber()
275 };
276 this->vMidiInputs.push_back(c);
277 this->iMidiPort = iMidiPort;
278 }
279 }
280
281 EngineChannel* SamplerChannel::GetEngineChannel() {
282 return pEngineChannel;
283 }
284
285 midi_chan_t SamplerChannel::GetMidiInputChannel() {
286 if (pEngineChannel) this->midiChannel = pEngineChannel->MidiChannel();
287 return this->midiChannel;
288 }
289
290 int SamplerChannel::GetMidiInputPort() {
291 MidiInputPort* pMidiInputPort = (pEngineChannel) ? pEngineChannel->GetMidiInputPort(0) : NULL;
292 if (pMidiInputPort) this->iMidiPort = (int) pMidiInputPort->GetPortNumber();
293 return iMidiPort;
294 }
295
296 AudioOutputDevice* SamplerChannel::GetAudioOutputDevice() {
297 return pAudioOutputDevice;
298 }
299
300 MidiInputDevice* SamplerChannel::GetMidiInputDevice() {
301 if (pEngineChannel)
302 return (pEngineChannel->GetMidiInputPort(0)) ? pEngineChannel->GetMidiInputPort(0)->GetDevice() : NULL;
303
304 if (vMidiInputs.empty())
305 return NULL;
306
307 std::map<uint, MidiInputDevice*> mAllDevices = MidiInputDeviceFactory::Devices();
308 if (!mAllDevices.count(vMidiInputs[0].deviceID))
309 return NULL;
310
311 return mAllDevices[vMidiInputs[0].deviceID];
312 }
313
314 uint SamplerChannel::Index() {
315 if (iIndex >= 0) return iIndex;
316
317 Sampler::SamplerChannelMap::iterator iter = pSampler->mSamplerChannels.begin();
318 for (; iter != pSampler->mSamplerChannels.end(); iter++) {
319 if (iter->second == this) {
320 iIndex = iter->first;
321 return iIndex;
322 }
323 }
324
325 throw Exception("Internal error: SamplerChannel index not found");
326 }
327
328 Sampler* SamplerChannel::GetSampler() {
329 return pSampler;
330 }
331
332 void SamplerChannel::AddEngineChangeListener(EngineChangeListener* l) {
333 llEngineChangeListeners.AddListener(l);
334 }
335
336 void SamplerChannel::RemoveEngineChangeListener(EngineChangeListener* l) {
337 llEngineChangeListeners.RemoveListener(l);
338 }
339
340 void SamplerChannel::RemoveAllEngineChangeListeners() {
341 llEngineChangeListeners.RemoveAllListeners();
342 }
343
344 void SamplerChannel::fireEngineToBeChanged() {
345 for (int i = 0; i < llEngineChangeListeners.GetListenerCount(); i++) {
346 llEngineChangeListeners.GetListener(i)->EngineToBeChanged(Index());
347 }
348 }
349
350 void SamplerChannel::fireEngineChanged() {
351 for (int i = 0; i < llEngineChangeListeners.GetListenerCount(); i++) {
352 llEngineChangeListeners.GetListener(i)->EngineChanged(Index());
353 }
354 }
355
356 /**
357 * Takes a numeric MIDI device ID, port ID pair as argument and returns
358 * the actual MIDI input port associated with that unique ID pair.
359 */
360 MidiInputPort* SamplerChannel::_getPortForID(const midi_conn_t& c) {
361 std::map<uint, MidiInputDevice*> mAllDevices = MidiInputDeviceFactory::Devices();
362 if (!mAllDevices.count(c.deviceID))
363 return NULL;
364
365 return mAllDevices[c.deviceID]->GetPort(c.portNr);
366 }
367
368
369 // ******************************************************************
370 // * Sampler
371
372 Sampler::Sampler() {
373 eventHandler.SetSampler(this);
374 uiOldTotalVoiceCount = uiOldTotalStreamCount = 0;
375 }
376
377 Sampler::~Sampler() {
378 Reset();
379 }
380
381 uint Sampler::SamplerChannels() {
382 return mSamplerChannels.size();
383 }
384
385 void Sampler::AddChannelCountListener(ChannelCountListener* l) {
386 llChannelCountListeners.AddListener(l);
387 }
388
389 void Sampler::RemoveChannelCountListener(ChannelCountListener* l) {
390 llChannelCountListeners.RemoveListener(l);
391 }
392
393 void Sampler::fireChannelCountChanged(int NewCount) {
394 for (int i = 0; i < llChannelCountListeners.GetListenerCount(); i++) {
395 llChannelCountListeners.GetListener(i)->ChannelCountChanged(NewCount);
396 }
397 }
398
399 void Sampler::fireChannelAdded(SamplerChannel* pChannel) {
400 for (int i = 0; i < llChannelCountListeners.GetListenerCount(); i++) {
401 llChannelCountListeners.GetListener(i)->ChannelAdded(pChannel);
402 }
403 }
404
405 void Sampler::fireChannelToBeRemoved(SamplerChannel* pChannel) {
406 for (int i = 0; i < llChannelCountListeners.GetListenerCount(); i++) {
407 llChannelCountListeners.GetListener(i)->ChannelToBeRemoved(pChannel);
408 }
409 }
410
411 void Sampler::AddAudioDeviceCountListener(AudioDeviceCountListener* l) {
412 llAudioDeviceCountListeners.AddListener(l);
413 }
414
415 void Sampler::RemoveAudioDeviceCountListener(AudioDeviceCountListener* l) {
416 llAudioDeviceCountListeners.RemoveListener(l);
417 }
418
419 void Sampler::fireAudioDeviceCountChanged(int NewCount) {
420 for (int i = 0; i < llAudioDeviceCountListeners.GetListenerCount(); i++) {
421 llAudioDeviceCountListeners.GetListener(i)->AudioDeviceCountChanged(NewCount);
422 }
423 }
424
425 void Sampler::AddMidiDeviceCountListener(MidiDeviceCountListener* l) {
426 llMidiDeviceCountListeners.AddListener(l);
427 }
428
429 void Sampler::RemoveMidiDeviceCountListener(MidiDeviceCountListener* l) {
430 llMidiDeviceCountListeners.RemoveListener(l);
431 }
432
433 void Sampler::fireMidiDeviceCountChanged(int NewCount) {
434 for (int i = 0; i < llMidiDeviceCountListeners.GetListenerCount(); i++) {
435 llMidiDeviceCountListeners.GetListener(i)->MidiDeviceCountChanged(NewCount);
436 }
437 }
438
439 void Sampler::fireMidiDeviceToBeDestroyed(MidiInputDevice* pDevice) {
440 for (int i = 0; i < llMidiDeviceCountListeners.GetListenerCount(); i++) {
441 llMidiDeviceCountListeners.GetListener(i)->MidiDeviceToBeDestroyed(pDevice);
442 }
443 }
444
445 void Sampler::fireMidiDeviceCreated(MidiInputDevice* pDevice) {
446 for (int i = 0; i < llMidiDeviceCountListeners.GetListenerCount(); i++) {
447 llMidiDeviceCountListeners.GetListener(i)->MidiDeviceCreated(pDevice);
448 }
449 }
450
451 void Sampler::AddVoiceCountListener(VoiceCountListener* l) {
452 llVoiceCountListeners.AddListener(l);
453 }
454
455 void Sampler::RemoveVoiceCountListener(VoiceCountListener* l) {
456 llVoiceCountListeners.RemoveListener(l);
457 }
458
459 void Sampler::fireVoiceCountChanged(int ChannelId, int NewCount) {
460 std::map<uint, uint>::iterator it = mOldVoiceCounts.find(ChannelId);
461 if (it != mOldVoiceCounts.end()) {
462 uint oldCount = it->second;
463 if (NewCount == oldCount) return;
464 }
465
466 mOldVoiceCounts[ChannelId] = NewCount;
467
468 for (int i = 0; i < llVoiceCountListeners.GetListenerCount(); i++) {
469 llVoiceCountListeners.GetListener(i)->VoiceCountChanged(ChannelId, NewCount);
470 }
471 }
472
473 void Sampler::AddStreamCountListener(StreamCountListener* l) {
474 llStreamCountListeners.AddListener(l);
475 }
476
477 void Sampler::RemoveStreamCountListener(StreamCountListener* l) {
478 llStreamCountListeners.RemoveListener(l);
479 }
480
481 void Sampler::fireStreamCountChanged(int ChannelId, int NewCount) {
482 std::map<uint, uint>::iterator it = mOldStreamCounts.find(ChannelId);
483 if (it != mOldStreamCounts.end()) {
484 uint oldCount = it->second;
485 if (NewCount == oldCount) return;
486 }
487
488 mOldStreamCounts[ChannelId] = NewCount;
489
490 for (int i = 0; i < llStreamCountListeners.GetListenerCount(); i++) {
491 llStreamCountListeners.GetListener(i)->StreamCountChanged(ChannelId, NewCount);
492 }
493 }
494
495 void Sampler::AddBufferFillListener(BufferFillListener* l) {
496 llBufferFillListeners.AddListener(l);
497 }
498
499 void Sampler::RemoveBufferFillListener(BufferFillListener* l) {
500 llBufferFillListeners.RemoveListener(l);
501 }
502
503 void Sampler::fireBufferFillChanged(int ChannelId, String FillData) {
504 for (int i = 0; i < llBufferFillListeners.GetListenerCount(); i++) {
505 llBufferFillListeners.GetListener(i)->BufferFillChanged(ChannelId, FillData);
506 }
507 }
508
509 void Sampler::AddTotalStreamCountListener(TotalStreamCountListener* l) {
510 llTotalStreamCountListeners.AddListener(l);
511 }
512
513 void Sampler::RemoveTotalStreamCountListener(TotalStreamCountListener* l) {
514 llTotalStreamCountListeners.RemoveListener(l);
515 }
516
517 void Sampler::fireTotalStreamCountChanged(int NewCount) {
518 if (NewCount == uiOldTotalStreamCount) return;
519 uiOldTotalStreamCount = NewCount;
520
521 for (int i = 0; i < llTotalStreamCountListeners.GetListenerCount(); i++) {
522 llTotalStreamCountListeners.GetListener(i)->TotalStreamCountChanged(NewCount);
523 }
524 }
525
526 void Sampler::AddTotalVoiceCountListener(TotalVoiceCountListener* l) {
527 llTotalVoiceCountListeners.AddListener(l);
528 }
529
530 void Sampler::RemoveTotalVoiceCountListener(TotalVoiceCountListener* l) {
531 llTotalVoiceCountListeners.RemoveListener(l);
532 }
533
534 void Sampler::fireTotalVoiceCountChanged(int NewCount) {
535 if (NewCount == uiOldTotalVoiceCount) return;
536 uiOldTotalVoiceCount = NewCount;
537
538 for (int i = 0; i < llTotalVoiceCountListeners.GetListenerCount(); i++) {
539 llTotalVoiceCountListeners.GetListener(i)->TotalVoiceCountChanged(NewCount);
540 }
541 }
542
543 void Sampler::AddFxSendCountListener(FxSendCountListener* l) {
544 llFxSendCountListeners.AddListener(l);
545 }
546
547 void Sampler::RemoveFxSendCountListener(FxSendCountListener* l) {
548 llFxSendCountListeners.RemoveListener(l);
549 }
550
551 void Sampler::fireFxSendCountChanged(int ChannelId, int NewCount) {
552 for (int i = 0; i < llFxSendCountListeners.GetListenerCount(); i++) {
553 llFxSendCountListeners.GetListener(i)->FxSendCountChanged(ChannelId, NewCount);
554 }
555 }
556
557 void Sampler::EventHandler::EngineToBeChanged(int ChannelId) {
558 // nothing to do here
559 }
560
561 void Sampler::EventHandler::EngineChanged(int ChannelId) {
562 EngineChannel* engineChannel = pSampler->GetSamplerChannel(ChannelId)->GetEngineChannel();
563 if(engineChannel == NULL) return;
564 engineChannel->AddFxSendCountListener(this);
565 }
566
567 void Sampler::EventHandler::FxSendCountChanged(int ChannelId, int NewCount) {
568 pSampler->fireFxSendCountChanged(ChannelId, NewCount);
569 }
570
571
572 SamplerChannel* Sampler::AddSamplerChannel() {
573 // if there's no sampler channel yet
574 if (!mSamplerChannels.size()) {
575 SamplerChannel* pChannel = new SamplerChannel(this);
576 mSamplerChannels[0] = pChannel;
577 fireChannelAdded(pChannel);
578 fireChannelCountChanged(1);
579 pChannel->AddEngineChangeListener(&eventHandler);
580 return pChannel;
581 }
582
583 // get the highest used sampler channel index
584 uint lastIndex = (--(mSamplerChannels.end()))->first;
585
586 // check if we reached the index limit
587 if (lastIndex + 1 < lastIndex) {
588 // search for an unoccupied sampler channel index starting from 0
589 for (uint i = 0; i < lastIndex; i++) {
590 if (mSamplerChannels.find(i) != mSamplerChannels.end()) continue;
591 // we found an unused index, so insert the new channel there
592 SamplerChannel* pChannel = new SamplerChannel(this);
593 mSamplerChannels[i] = pChannel;
594 fireChannelAdded(pChannel);
595 fireChannelCountChanged(SamplerChannels());
596 pChannel->AddEngineChangeListener(&eventHandler);
597 return pChannel;
598 }
599 throw Exception("Internal error: could not find unoccupied sampler channel index.");
600 }
601
602 // we have not reached the index limit so we just add the channel past the highest index
603 SamplerChannel* pChannel = new SamplerChannel(this);
604 mSamplerChannels[lastIndex + 1] = pChannel;
605 fireChannelAdded(pChannel);
606 fireChannelCountChanged(SamplerChannels());
607 pChannel->AddEngineChangeListener(&eventHandler);
608 return pChannel;
609 }
610
611 SamplerChannel* Sampler::GetSamplerChannel(uint uiSamplerChannel) {
612 return (mSamplerChannels.find(uiSamplerChannel) != mSamplerChannels.end()) ? mSamplerChannels[uiSamplerChannel] : NULL;
613 }
614
615 std::map<uint, SamplerChannel*> Sampler::GetSamplerChannels() {
616 return mSamplerChannels;
617 }
618
619 void Sampler::RemoveSamplerChannel(SamplerChannel* pSamplerChannel) {
620 SamplerChannelMap::iterator iterChan = mSamplerChannels.begin();
621 for (; iterChan != mSamplerChannels.end(); iterChan++) {
622 if (iterChan->second == pSamplerChannel) {
623 fireChannelToBeRemoved(pSamplerChannel);
624 mOldVoiceCounts.erase(pSamplerChannel->Index());
625 mOldStreamCounts.erase(pSamplerChannel->Index());
626 pSamplerChannel->RemoveAllEngineChangeListeners();
627 mSamplerChannels.erase(iterChan);
628 delete pSamplerChannel;
629 fireChannelCountChanged(SamplerChannels());
630 return;
631 }
632 }
633 }
634
635 void Sampler::RemoveSamplerChannel(uint uiSamplerChannel) {
636 SamplerChannel* pChannel = GetSamplerChannel(uiSamplerChannel);
637 if (!pChannel) return;
638 RemoveSamplerChannel(pChannel);
639 }
640
641 void Sampler::RemoveAllSamplerChannels() {
642 /*
643 * In maps iterator invalidation occurs when the iterator point
644 * to the element that is being erased. So we need to copy the map
645 * by calling GetSamplerChannels() to prevent that.
646 */
647 SamplerChannelMap chns = GetSamplerChannels();
648 SamplerChannelMap::iterator iter = chns.begin();
649 for(; iter != chns.end(); iter++) {
650 RemoveSamplerChannel(iter->second);
651 }
652 }
653
654 std::vector<String> Sampler::AvailableAudioOutputDrivers() {
655 return AudioOutputDeviceFactory::AvailableDrivers();
656 }
657
658 std::vector<String> Sampler::AvailableMidiInputDrivers() {
659 return MidiInputDeviceFactory::AvailableDrivers();
660 }
661
662 std::vector<String> Sampler::AvailableEngineTypes() {
663 return EngineFactory::AvailableEngineTypes();
664 }
665
666 AudioOutputDevice* Sampler::CreateAudioOutputDevice(String AudioDriver, std::map<String,String> Parameters) throw (Exception) {
667 // create new device
668 AudioOutputDevice* pDevice = AudioOutputDeviceFactory::Create(AudioDriver, Parameters);
669
670 fireAudioDeviceCountChanged(AudioOutputDevices());
671 return pDevice;
672 }
673
674 uint Sampler::AudioOutputDevices() {
675 return AudioOutputDeviceFactory::Devices().size();
676 }
677
678 uint Sampler::MidiInputDevices() {
679 return MidiInputDeviceFactory::Devices().size();
680 }
681
682 std::map<uint, AudioOutputDevice*> Sampler::GetAudioOutputDevices() {
683 return AudioOutputDeviceFactory::Devices();
684 }
685
686 std::map<uint, MidiInputDevice*> Sampler::GetMidiInputDevices() {
687 return MidiInputDeviceFactory::Devices();
688 }
689
690 void Sampler::DestroyAudioOutputDevice(AudioOutputDevice* pDevice) throw (Exception) {
691 if (pDevice) {
692 // check if there are still sampler engines connected to this device
693 for (SamplerChannelMap::iterator iterChan = mSamplerChannels.begin();
694 iterChan != mSamplerChannels.end(); iterChan++
695 ) if (iterChan->second->GetAudioOutputDevice() == pDevice) throw Exception("Sampler channel " + ToString(iterChan->first) + " is still connected to the audio output device.");
696
697 //TODO: should we add fireAudioDeviceToBeDestroyed() here ?
698 AudioOutputDeviceFactory::Destroy(pDevice);
699 fireAudioDeviceCountChanged(AudioOutputDevices());
700 }
701 }
702
703 void Sampler::DestroyAllAudioOutputDevices() throw (Exception) {
704 /*
705 * In maps iterator invalidation occurs when the iterator point
706 * to the element that is being erased. So we need to copy the map
707 * by calling GetAudioOutputDevices() to prevent that.
708 */
709 std::map<uint, AudioOutputDevice*> devs = GetAudioOutputDevices();
710 std::map<uint, AudioOutputDevice*>::iterator iter = devs.begin();
711 for (; iter != devs.end(); iter++) {
712 AudioOutputDevice* pDevice = iter->second;
713
714 // skip non-autonomous devices
715 if (!pDevice->isAutonomousDevice()) continue;
716
717 DestroyAudioOutputDevice(pDevice);
718 }
719 }
720
721 void Sampler::DestroyMidiInputDevice(MidiInputDevice* pDevice) throw (Exception) {
722 if (pDevice) {
723 // check if there are still sampler engines connected to this device
724 for (SamplerChannelMap::iterator iterChan = mSamplerChannels.begin();
725 iterChan != mSamplerChannels.end(); ++iterChan)
726 {
727 std::vector<MidiInputPort*> vPorts = iterChan->second->GetMidiInputPorts();
728 for (int k = 0; k < vPorts.size(); ++k)
729 if (vPorts[k]->GetDevice() == pDevice)
730 throw Exception("Sampler channel " + ToString(iterChan->first) + " is still connected to the midi input device.");
731 }
732
733 fireMidiDeviceToBeDestroyed(pDevice);
734 MidiInputDeviceFactory::Destroy(pDevice);
735 fireMidiDeviceCountChanged(MidiInputDevices());
736 }
737 }
738
739 void Sampler::DestroyAllMidiInputDevices() throw (Exception) {
740 /*
741 * In maps iterator invalidation occurs when the iterator point
742 * to the element that is being erased. So we need to copy the map
743 * by calling GetMidiInputDevices() to prevent that.
744 */
745 std::map<uint, MidiInputDevice*> devs = GetMidiInputDevices();
746 std::map<uint, MidiInputDevice*>::iterator iter = devs.begin();
747 for (; iter != devs.end(); iter++) {
748 MidiInputDevice* pDevice = iter->second;
749
750 // skip non-autonomous devices
751 if (!pDevice->isAutonomousDevice()) continue;
752
753 DestroyMidiInputDevice(pDevice);
754 }
755 }
756
757 MidiInputDevice* Sampler::CreateMidiInputDevice(String MidiDriver, std::map<String,String> Parameters) throw (Exception) {
758 // create new device
759 MidiInputDevice* pDevice = MidiInputDeviceFactory::Create(MidiDriver, Parameters, this);
760
761 fireMidiDeviceCreated(pDevice);
762 fireMidiDeviceCountChanged(MidiInputDevices());
763 return pDevice;
764 }
765
766 int Sampler::GetDiskStreamCount() {
767 int count = 0;
768 std::set<Engine*>::iterator it = EngineFactory::EngineInstances().begin();
769
770 for(; it != EngineFactory::EngineInstances().end(); it++) {
771 count += (*it)->DiskStreamCount();
772 }
773
774 return count;
775 }
776
777 int Sampler::GetVoiceCount() {
778 int count = 0;
779 std::set<Engine*>::iterator it = EngineFactory::EngineInstances().begin();
780
781 for(; it != EngineFactory::EngineInstances().end(); it++) {
782 count += (*it)->VoiceCount();
783 }
784
785 return count;
786 }
787
788 int Sampler::GetGlobalMaxVoices() {
789 return GLOBAL_MAX_VOICES; // see common/global_private.cpp
790 }
791
792 int Sampler::GetGlobalMaxStreams() {
793 return GLOBAL_MAX_STREAMS; // see common/global_private.cpp
794 }
795
796 void Sampler::SetGlobalMaxVoices(int n) throw (Exception) {
797 if (n < 1) throw Exception("Maximum voices may not be less than 1");
798 GLOBAL_MAX_VOICES = n; // see common/global_private.cpp
799 const std::set<Engine*>& engines = EngineFactory::EngineInstances();
800 if (engines.size() > 0) {
801 std::set<Engine*>::iterator iter = engines.begin();
802 std::set<Engine*>::iterator end = engines.end();
803 for (; iter != end; ++iter) {
804 (*iter)->SetMaxVoices(n);
805 }
806 }
807 }
808
809 void Sampler::SetGlobalMaxStreams(int n) throw (Exception) {
810 if (n < 0) throw Exception("Maximum disk streams may not be negative");
811 GLOBAL_MAX_STREAMS = n; // see common/global_private.cpp
812 const std::set<Engine*>& engines = EngineFactory::EngineInstances();
813 if (engines.size() > 0) {
814 std::set<Engine*>::iterator iter = engines.begin();
815 std::set<Engine*>::iterator end = engines.end();
816 for (; iter != end; ++iter) {
817 (*iter)->SetMaxDiskStreams(n);
818 }
819 }
820 }
821
822 void Sampler::Reset() {
823 // delete sampler channels
824 try {
825 RemoveAllSamplerChannels();
826 }
827 catch(...) {
828 std::cerr << "Sampler::Reset(): Exception occured while trying to delete all sampler channels, exiting.\n" << std::flush;
829 exit(EXIT_FAILURE);
830 }
831
832 // delete midi input devices
833 try {
834 DestroyAllMidiInputDevices();
835 }
836 catch(...) {
837 std::cerr << "Sampler::Reset(): Exception occured while trying to delete all MIDI input devices, exiting.\n" << std::flush;
838 exit(EXIT_FAILURE);
839 }
840
841 // delete audio output devices
842 try {
843 DestroyAllAudioOutputDevices();
844 }
845 catch(...) {
846 std::cerr << "Sampler::Reset(): Exception occured while trying to delete all audio output devices, exiting.\n" << std::flush;
847 exit(EXIT_FAILURE);
848 }
849
850 // delete MIDI instrument maps
851 try {
852 MidiInstrumentMapper::RemoveAllMaps();
853 }
854 catch(...) {
855 std::cerr << "Sampler::Reset(): Exception occured while trying to delete all MIDI instrument maps, exiting.\n" << std::flush;
856 exit(EXIT_FAILURE);
857 }
858
859 // unload all instrument editor DLLs
860 InstrumentEditorFactory::ClosePlugins();
861 }
862
863 bool Sampler::EnableDenormalsAreZeroMode() {
864 Features::detect();
865 return Features::enableDenormalsAreZeroMode();
866 }
867
868 void Sampler::fireStatistics() {
869 static const LSCPEvent::event_t eventsArr[] = {
870 LSCPEvent::event_voice_count, LSCPEvent::event_stream_count,
871 LSCPEvent::event_buffer_fill, LSCPEvent::event_total_voice_count
872 };
873 static const std::list<LSCPEvent::event_t> events(eventsArr, eventsArr + 4);
874
875 if (LSCPServer::EventSubscribers(events))
876 {
877 LockGuard lock(LSCPServer::RTNotifyMutex);
878 std::map<uint,SamplerChannel*> channels = GetSamplerChannels();
879 std::map<uint,SamplerChannel*>::iterator iter = channels.begin();
880 for (; iter != channels.end(); iter++) {
881 SamplerChannel* pSamplerChannel = iter->second;
882 EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
883 if (!pEngineChannel) continue;
884 Engine* pEngine = pEngineChannel->GetEngine();
885 if (!pEngine) continue;
886 fireVoiceCountChanged(iter->first, pEngineChannel->GetVoiceCount());
887 fireStreamCountChanged(iter->first, pEngineChannel->GetDiskStreamCount());
888 fireBufferFillChanged(iter->first, pEngine->DiskStreamBufferFillPercentage());
889 }
890
891 fireTotalStreamCountChanged(GetDiskStreamCount());
892 fireTotalVoiceCountChanged(GetVoiceCount());
893 }
894 }
895
896 #if defined(WIN32)
897 static HINSTANCE dllInstance = NULL;
898
899 String Sampler::GetInstallDir() {
900 char buf[MAX_PATH + 1];
901 if (GetModuleFileName(dllInstance, buf, MAX_PATH)) {
902 String s(buf);
903 size_t n = s.rfind('\\');
904 if (n != String::npos) {
905 return s.substr(0, n);
906 }
907 }
908 return "";
909 }
910 #endif
911 } // namespace LinuxSampler
912
913 #if defined(WIN32)
914 extern "C" {
915 BOOL WINAPI DllMain(HINSTANCE instance, DWORD reason, LPVOID reserved)
916 {
917 switch (reason) {
918 case DLL_PROCESS_ATTACH:
919 LinuxSampler::dllInstance = instance;
920 break;
921 }
922 return TRUE;
923 }
924 }
925 #endif

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