/[svn]/linuxsampler/trunk/src/engines/sf2/Voice.cpp
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Contents of /linuxsampler/trunk/src/engines/sf2/Voice.cpp

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Revision 2207 - (show annotations) (download)
Fri Jul 15 15:43:49 2011 UTC (12 years, 9 months ago) by iliev
File size: 22256 byte(s)
* simplified the signal unit model
* sf2: initial implementation of modulation LFO and cutoff filter

1 /***************************************************************************
2 * *
3 * LinuxSampler - modular, streaming capable sampler *
4 * *
5 * Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck *
6 * Copyright (C) 2005 - 2008 Christian Schoenebeck *
7 * Copyright (C) 2009 - 2011 Christian Schoenebeck and Grigor Iliev *
8 * *
9 * This program is free software; you can redistribute it and/or modify *
10 * it under the terms of the GNU General Public License as published by *
11 * the Free Software Foundation; either version 2 of the License, or *
12 * (at your option) any later version. *
13 * *
14 * This program is distributed in the hope that it will be useful, *
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
17 * GNU General Public License for more details. *
18 * *
19 * You should have received a copy of the GNU General Public License *
20 * along with this program; if not, write to the Free Software *
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, *
22 * MA 02111-1307 USA *
23 ***************************************************************************/
24
25 #include "Voice.h"
26
27 #include "Engine.h"
28 #include "EngineChannel.h"
29
30 namespace LinuxSampler { namespace sf2 {
31
32 Voice::Voice(): SignalRack(this) {
33 pEngine = NULL;
34 pEG1 = &EG1;
35 pEG2 = &EG2;
36 }
37
38 Voice::~Voice() {
39
40 }
41
42 void Voice::AboutToTrigger() {
43
44 }
45
46 EngineChannel* Voice::GetSf2EngineChannel() {
47 return static_cast<EngineChannel*>(pEngineChannel);
48 }
49
50 void Voice::SetEngine(LinuxSampler::Engine* pEngine) {
51 Engine* engine = static_cast<Engine*>(pEngine);
52 this->pEngine = engine;
53 this->pDiskThread = engine->pDiskThread;
54 dmsg(6,("Voice::SetEngine()\n"));
55 }
56
57 Voice::SampleInfo Voice::GetSampleInfo() {
58 SampleInfo si;
59 si.SampleRate = pSample->SampleRate;
60 si.ChannelCount = pSample->GetChannelCount();
61 si.FrameSize = pSample->GetFrameSize();
62 si.BitDepth = (pSample->GetFrameSize() / pSample->GetChannelCount()) * 8;
63 si.TotalFrameCount = pSample->GetTotalFrameCount();
64
65 si.HasLoops = pRegion->HasLoop;
66 si.LoopStart = (si.HasLoops) ? pRegion->LoopStart : 0;
67 si.LoopLength = (si.HasLoops) ? ((pRegion->LoopEnd) - pRegion->LoopStart): 0;
68 si.LoopPlayCount = 0; // TODO:
69 si.Unpitched = pSample->IsUnpitched();
70
71 return si;
72 }
73
74 Voice::RegionInfo Voice::GetRegionInfo() {
75 ::sf2::Region* reg = NULL;
76 ::sf2::Preset* preset = GetSf2EngineChannel()->pInstrument;
77 for (int i = 0; i < preset->GetRegionCount(); i++) { // TODO: some optimization?
78 if (preset->GetRegion(i)->pInstrument == pRegion->GetParentInstrument()) {
79 reg = preset->GetRegion(i); // TODO: Can the instrument belong to more than one preset region?
80 break;
81 }
82 }
83 pPresetRegion = reg;
84
85 RegionInfo ri;
86 ri.UnityNote = pRegion->GetUnityNote();
87 ri.FineTune = pRegion->GetFineTune(reg) + (pRegion->GetCoarseTune(reg) * 100);
88 ri.Pan = pRegion->GetPan(reg);
89 ri.SampleStartOffset = pRegion->startAddrsOffset + pRegion->startAddrsCoarseOffset;
90
91 // filter cutoff frequency
92 ri.EG2PreAttack = 1000;
93 ri.EG2Attack = pRegion->GetEG2Attack(reg);
94 //ri.EG2Hold = pRegion->EG2Hold; // TODO:
95 ri.EG2Decay1 = pRegion->GetEG2Decay(reg);
96 ri.EG2Decay2 = pRegion->GetEG2Decay(reg);
97 ri.EG2Sustain = pRegion->GetEG2Sustain(reg);
98 ri.EG2InfiniteSustain = true;
99 ri.EG2Release = pRegion->GetEG2Release(reg);
100
101 // sample pitch
102 ri.EG3Attack = 0; // TODO:
103 ri.EG3Depth = 0; // TODO:
104 ri.VCFEnabled = true; // TODO:
105 ri.VCFType = Filter::vcf_type_2p_lowpass; // TODO:
106 ri.VCFResonance = 0; // TODO:
107
108 ri.ReleaseTriggerDecay = 0; // TODO:
109
110 return ri;
111 }
112
113 Voice::InstrumentInfo Voice::GetInstrumentInfo() {
114 InstrumentInfo ii;
115 ii.FineTune = 0; // TODO:
116 ii.PitchbendRange = 2; // TODO:
117
118 return ii;
119 }
120
121 double Voice::GetSampleAttenuation() {
122 return 1.0; // TODO:
123 }
124
125 double Voice::GetVelocityAttenuation(uint8_t MIDIKeyVelocity) {
126 return double(MIDIKeyVelocity) / 127.0f; // TODO:
127 }
128
129 double Voice::GetVelocityRelease(uint8_t MIDIKeyVelocity) {
130 return 0.9; // TODO:
131 }
132
133 void Voice::ProcessCCEvent(RTList<Event>::Iterator& itEvent) {
134 /*if (itEvent->Type == Event::type_control_change && itEvent->Param.CC.Controller) { // if (valid) MIDI control change event
135 if (pRegion->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&
136 itEvent->Param.CC.Controller == pRegion->AttenuationController.controller_number) {
137 CrossfadeSmoother.update(AbstractEngine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.CC.Value)]);
138 }
139 }*/ // TODO: ^^^
140 }
141
142 void Voice::ProcessCutoffEvent(RTList<Event>::Iterator& itEvent) {
143 /*int ccvalue = itEvent->Param.CC.Value;
144 if (VCFCutoffCtrl.value == ccvalue) return;
145 VCFCutoffCtrl.value == ccvalue;
146 if (pRegion->VCFCutoffControllerInvert) ccvalue = 127 - ccvalue;
147 if (ccvalue < pRegion->VCFVelocityScale) ccvalue = pRegion->VCFVelocityScale;
148 float cutoff = CutoffBase * float(ccvalue);
149 if (cutoff > 127.0f) cutoff = 127.0f;
150
151 VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of fFinalCutoff next time
152 fFinalCutoff = cutoff;*/ // TODO: ^^^
153 }
154
155 double Voice::CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity) {
156 /*float crossfadeVolume;
157 switch (pRegion->AttenuationController.type) {
158 case ::gig::attenuation_ctrl_t::type_channelaftertouch:
159 crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetSf2EngineChannel()->ControllerTable[128])];
160 break;
161 case ::gig::attenuation_ctrl_t::type_velocity:
162 crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(MIDIKeyVelocity)];
163 break;
164 case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate
165 crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetSf2EngineChannel()->ControllerTable[pRegion->AttenuationController.controller_number])];
166 break;
167 case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined
168 default:
169 crossfadeVolume = 1.0f;
170 }
171
172 return crossfadeVolume;*/ // TODO: ^^^
173 return 1.0f;
174 }
175
176 double Voice::GetEG1ControllerValue(uint8_t MIDIKeyVelocity) {
177 /*double eg1controllervalue = 0;
178 switch (pRegion->EG1Controller.type) {
179 case ::gig::eg1_ctrl_t::type_none: // no controller defined
180 eg1controllervalue = 0;
181 break;
182 case ::gig::eg1_ctrl_t::type_channelaftertouch:
183 eg1controllervalue = GetSf2EngineChannel()->ControllerTable[128];
184 break;
185 case ::gig::eg1_ctrl_t::type_velocity:
186 eg1controllervalue = MIDIKeyVelocity;
187 break;
188 case ::gig::eg1_ctrl_t::type_controlchange: // MIDI control change controller
189 eg1controllervalue = GetSf2EngineChannel()->ControllerTable[pRegion->EG1Controller.controller_number];
190 break;
191 }
192 if (pRegion->EG1ControllerInvert) eg1controllervalue = 127 - eg1controllervalue;
193
194 return eg1controllervalue;*/ // TODO: ^^^
195 return 0;
196 }
197
198 Voice::EGInfo Voice::CalculateEG1ControllerInfluence(double eg1ControllerValue) {
199 /*EGInfo eg;
200 // (eg1attack is different from the others)
201 eg.Attack = (pRegion->EG1ControllerAttackInfluence) ?
202 1 + 0.031 * (double) (pRegion->EG1ControllerAttackInfluence == 1 ?
203 1 : 1 << pRegion->EG1ControllerAttackInfluence) * eg1ControllerValue : 1.0;
204 eg.Decay = (pRegion->EG1ControllerDecayInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerDecayInfluence) * eg1ControllerValue : 1.0;
205 eg.Release = (pRegion->EG1ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerReleaseInfluence) * eg1ControllerValue : 1.0;
206
207 return eg;*/ // TODO: ^^^
208 EGInfo eg;
209 eg.Attack = 1.0;
210 eg.Decay = 1.0;
211 eg.Release = 1.0;
212 return eg;
213 }
214
215 void Voice::TriggerEG1(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
216 EG1.trigger(0,
217 pRegion->GetEG1Attack(pPresetRegion),
218 pRegion->GetEG1Hold(pPresetRegion),
219 pRegion->GetEG1Decay(pPresetRegion),
220 uint(pRegion->GetEG1Sustain(pPresetRegion)),
221 pRegion->GetEG1Release(pPresetRegion),
222 sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
223 }
224
225 double Voice::GetEG2ControllerValue(uint8_t MIDIKeyVelocity) {
226 /*double eg2controllervalue = 0;
227 switch (pRegion->EG2Controller.type) {
228 case ::gig::eg2_ctrl_t::type_none: // no controller defined
229 eg2controllervalue = 0;
230 break;
231 case ::gig::eg2_ctrl_t::type_channelaftertouch:
232 eg2controllervalue = GetSf2EngineChannel()->ControllerTable[128];
233 break;
234 case ::gig::eg2_ctrl_t::type_velocity:
235 eg2controllervalue = MIDIKeyVelocity;
236 break;
237 case ::gig::eg2_ctrl_t::type_controlchange: // MIDI control change controller
238 eg2controllervalue = GetSf2EngineChannel()->ControllerTable[pRegion->EG2Controller.controller_number];
239 break;
240 }
241 if (pRegion->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue;
242
243 return eg2controllervalue;*/ // TODO: ^^^
244 return 0;
245 }
246
247 Voice::EGInfo Voice::CalculateEG2ControllerInfluence(double eg2ControllerValue) {
248 /*EGInfo eg;
249 eg.Attack = (pRegion->EG2ControllerAttackInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerAttackInfluence) * eg2ControllerValue : 1.0;
250 eg.Decay = (pRegion->EG2ControllerDecayInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerDecayInfluence) * eg2ControllerValue : 1.0;
251 eg.Release = (pRegion->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerReleaseInfluence) * eg2ControllerValue : 1.0;
252
253 return eg;*/ // TODO: ^^^
254 EGInfo eg;
255 eg.Attack = 1.0;
256 eg.Decay = 1.0;
257 eg.Release = 1.0;
258 return eg;
259 }
260
261 void Voice::TriggerEG2(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
262 EG2.trigger(uint(RgnInfo.EG2PreAttack),
263 RgnInfo.EG2Attack * egInfo.Attack,
264 false,
265 RgnInfo.EG2Decay1 * egInfo.Decay * velrelease,
266 RgnInfo.EG2Decay2 * egInfo.Decay * velrelease,
267 RgnInfo.EG2InfiniteSustain,
268 uint(RgnInfo.EG2Sustain),
269 RgnInfo.EG2Release * egInfo.Release * velrelease,
270 velocityAttenuation,
271 sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
272 }
273
274 void Voice::InitLFO1() {
275 /*uint16_t lfo1_internal_depth;
276 switch (pRegion->LFO1Controller) {
277 case ::gig::lfo1_ctrl_internal:
278 lfo1_internal_depth = pRegion->LFO1InternalDepth;
279 pLFO1->ExtController = 0; // no external controller
280 bLFO1Enabled = (lfo1_internal_depth > 0);
281 break;
282 case ::gig::lfo1_ctrl_modwheel:
283 lfo1_internal_depth = 0;
284 pLFO1->ExtController = 1; // MIDI controller 1
285 bLFO1Enabled = (pRegion->LFO1ControlDepth > 0);
286 break;
287 case ::gig::lfo1_ctrl_breath:
288 lfo1_internal_depth = 0;
289 pLFO1->ExtController = 2; // MIDI controller 2
290 bLFO1Enabled = (pRegion->LFO1ControlDepth > 0);
291 break;
292 case ::gig::lfo1_ctrl_internal_modwheel:
293 lfo1_internal_depth = pRegion->LFO1InternalDepth;
294 pLFO1->ExtController = 1; // MIDI controller 1
295 bLFO1Enabled = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
296 break;
297 case ::gig::lfo1_ctrl_internal_breath:
298 lfo1_internal_depth = pRegion->LFO1InternalDepth;
299 pLFO1->ExtController = 2; // MIDI controller 2
300 bLFO1Enabled = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
301 break;
302 default:
303 lfo1_internal_depth = 0;
304 pLFO1->ExtController = 0; // no external controller
305 bLFO1Enabled = false;
306 }
307 if (bLFO1Enabled) {
308 pLFO1->trigger(pRegion->LFO1Frequency,
309 start_level_min,
310 lfo1_internal_depth,
311 pRegion->LFO1ControlDepth,
312 pRegion->LFO1FlipPhase,
313 pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
314 pLFO1->update(pLFO1->ExtController ? GetSf2EngineChannel()->ControllerTable[pLFO1->ExtController] : 0);
315 }*/ // TODO: ^^^
316 bLFO1Enabled = false;
317 }
318
319 void Voice::InitLFO2() {
320 /*uint16_t lfo2_internal_depth;
321 switch (pRegion->LFO2Controller) {
322 case ::gig::lfo2_ctrl_internal:
323 lfo2_internal_depth = pRegion->LFO2InternalDepth;
324 pLFO2->ExtController = 0; // no external controller
325 bLFO2Enabled = (lfo2_internal_depth > 0);
326 break;
327 case ::gig::lfo2_ctrl_modwheel:
328 lfo2_internal_depth = 0;
329 pLFO2->ExtController = 1; // MIDI controller 1
330 bLFO2Enabled = (pRegion->LFO2ControlDepth > 0);
331 break;
332 case ::gig::lfo2_ctrl_foot:
333 lfo2_internal_depth = 0;
334 pLFO2->ExtController = 4; // MIDI controller 4
335 bLFO2Enabled = (pRegion->LFO2ControlDepth > 0);
336 break;
337 case ::gig::lfo2_ctrl_internal_modwheel:
338 lfo2_internal_depth = pRegion->LFO2InternalDepth;
339 pLFO2->ExtController = 1; // MIDI controller 1
340 bLFO2Enabled = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
341 break;
342 case ::gig::lfo2_ctrl_internal_foot:
343 lfo2_internal_depth = pRegion->LFO2InternalDepth;
344 pLFO2->ExtController = 4; // MIDI controller 4
345 bLFO2Enabled = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
346 break;
347 default:
348 lfo2_internal_depth = 0;
349 pLFO2->ExtController = 0; // no external controller
350 bLFO2Enabled = false;
351 }
352 if (bLFO2Enabled) {
353 pLFO2->trigger(pRegion->LFO2Frequency,
354 start_level_max,
355 lfo2_internal_depth,
356 pRegion->LFO2ControlDepth,
357 pRegion->LFO2FlipPhase,
358 pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
359 pLFO2->update(pLFO2->ExtController ? GetSf2EngineChannel()->ControllerTable[pLFO2->ExtController] : 0);
360 }*/ // TODO: ^^^
361 bLFO2Enabled = false;
362 }
363
364 void Voice::InitLFO3() {
365 /*uint16_t lfo3_internal_depth;
366 switch (pRegion->LFO3Controller) {
367 case ::gig::lfo3_ctrl_internal:
368 lfo3_internal_depth = pRegion->LFO3InternalDepth;
369 pLFO3->ExtController = 0; // no external controller
370 bLFO3Enabled = (lfo3_internal_depth > 0);
371 break;
372 case ::gig::lfo3_ctrl_modwheel:
373 lfo3_internal_depth = 0;
374 pLFO3->ExtController = 1; // MIDI controller 1
375 bLFO3Enabled = (pRegion->LFO3ControlDepth > 0);
376 break;
377 case ::gig::lfo3_ctrl_aftertouch:
378 lfo3_internal_depth = 0;
379 pLFO3->ExtController = 128;
380 bLFO3Enabled = true;
381 break;
382 case ::gig::lfo3_ctrl_internal_modwheel:
383 lfo3_internal_depth = pRegion->LFO3InternalDepth;
384 pLFO3->ExtController = 1; // MIDI controller 1
385 bLFO3Enabled = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
386 break;
387 case ::gig::lfo3_ctrl_internal_aftertouch:
388 lfo3_internal_depth = pRegion->LFO3InternalDepth;
389 pLFO1->ExtController = 128;
390 bLFO3Enabled = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
391 break;
392 default:
393 lfo3_internal_depth = 0;
394 pLFO3->ExtController = 0; // no external controller
395 bLFO3Enabled = false;
396 }
397 if (bLFO3Enabled) {
398 pLFO3->trigger(pRegion->LFO3Frequency,
399 start_level_mid,
400 lfo3_internal_depth,
401 pRegion->LFO3ControlDepth,
402 false,
403 pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
404 pLFO3->update(pLFO3->ExtController ? GetSf2EngineChannel()->ControllerTable[pLFO3->ExtController] : 0);
405 }*/ // TODO: ^^^
406 bLFO3Enabled = false;
407 }
408
409 SignalUnitRack* Voice::GetSignalUnitRack() {
410 return static_cast<SignalUnitRack*> (&SignalRack);
411 }
412
413 float Voice::CalculateCutoffBase(uint8_t MIDIKeyVelocity) {
414 float cutoff = pRegion->GetInitialFilterFc(pPresetRegion);
415 if (MIDIKeyVelocity == 0) return cutoff;
416
417 cutoff *= RTMath::CentsToFreqRatioUnlimited (
418 ((127 - MIDIKeyVelocity) / 127.0) * -2400 // 8.4.2 MIDI Note-On Velocity to Filter Cutoff
419 );
420
421 return cutoff;
422 }
423
424 float Voice::CalculateFinalCutoff(float cutoffBase) {
425 /*int cvalue;
426 if (VCFCutoffCtrl.controller) {
427 cvalue = GetSf2EngineChannel()->ControllerTable[VCFCutoffCtrl.controller];
428 if (pRegion->VCFCutoffControllerInvert) cvalue = 127 - cvalue;
429 // VCFVelocityScale in this case means Minimum cutoff
430 if (cvalue < pRegion->VCFVelocityScale) cvalue = pRegion->VCFVelocityScale;
431 }
432 else {
433 cvalue = pRegion->VCFCutoff;
434 }
435 float fco = cutoffBase * float(cvalue);
436 if (fco > 127.0f) fco = 127.0f;
437
438 return fco;*/ // TODO: ^^^
439 return cutoffBase;
440 }
441
442 uint8_t Voice::GetVCFCutoffCtrl() {
443 /*uint8_t ctrl;
444 switch (pRegion->VCFCutoffController) {
445 case ::gig::vcf_cutoff_ctrl_modwheel:
446 ctrl = 1;
447 break;
448 case ::gig::vcf_cutoff_ctrl_effect1:
449 ctrl = 12;
450 break;
451 case ::gig::vcf_cutoff_ctrl_effect2:
452 ctrl = 13;
453 break;
454 case ::gig::vcf_cutoff_ctrl_breath:
455 ctrl = 2;
456 break;
457 case ::gig::vcf_cutoff_ctrl_foot:
458 ctrl = 4;
459 break;
460 case ::gig::vcf_cutoff_ctrl_sustainpedal:
461 ctrl = 64;
462 break;
463 case ::gig::vcf_cutoff_ctrl_softpedal:
464 ctrl = 67;
465 break;
466 case ::gig::vcf_cutoff_ctrl_genpurpose7:
467 ctrl = 82;
468 break;
469 case ::gig::vcf_cutoff_ctrl_genpurpose8:
470 ctrl = 83;
471 break;
472 case ::gig::vcf_cutoff_ctrl_aftertouch:
473 ctrl = 128;
474 break;
475 case ::gig::vcf_cutoff_ctrl_none:
476 default:
477 ctrl = 0;
478 break;
479 }
480
481 return ctrl;*/ // TODO: ^^^
482 return 0;
483 }
484
485 uint8_t Voice::GetVCFResonanceCtrl() {
486 /*uint8_t ctrl;
487 switch (pRegion->VCFResonanceController) {
488 case ::gig::vcf_res_ctrl_genpurpose3:
489 ctrl = 18;
490 break;
491 case ::gig::vcf_res_ctrl_genpurpose4:
492 ctrl = 19;
493 break;
494 case ::gig::vcf_res_ctrl_genpurpose5:
495 ctrl = 80;
496 break;
497 case ::gig::vcf_res_ctrl_genpurpose6:
498 ctrl = 81;
499 break;
500 case ::gig::vcf_res_ctrl_none:
501 default:
502 ctrl = 0;
503 }
504
505 return ctrl;*/ // TODO: ^^^
506 return 0;
507 }
508
509 void Voice::ProcessGroupEvent(RTList<Event>::Iterator& itEvent) {
510 if (itEvent->Param.Note.Key != MIDIKey) {
511 // kill the voice fast
512 pEG1->enterFadeOutStage();
513 }
514 }
515
516 }} // namespace LinuxSampler::sf2

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