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

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Revision 2879 - (show annotations) (download)
Tue Apr 19 14:07:53 2016 UTC (2 years, 5 months ago) by schoenebeck
File size: 23201 byte(s)
* All engines: Active voices are now internally grouped to "Note" objects,
  instead of being directly assigned to a keyboard key. This allows more
  fine graded processing of voices, which is i.e. required for certain
  instrument script features.
* Built-in script function "play_note()": Added support for passing
  special value -1 for "duration-us" argument, which will cause the
  triggered note to be released once the original note was released.
* Bumped version (2.0.0.svn3).

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 - 2015 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 "../../common/Features.h"
26 #include "Synthesizer.h"
27 #include "Profiler.h"
28 #include "Engine.h"
29 #include "EngineChannel.h"
30
31 #include "Voice.h"
32
33 namespace LinuxSampler { namespace gig {
34
35 Voice::Voice() {
36 pEngine = NULL;
37 pEG1 = &EG1;
38 pEG2 = &EG2;
39 }
40
41 Voice::~Voice() {
42 }
43
44 EngineChannel* Voice::GetGigEngineChannel() {
45 return static_cast<EngineChannel*>(pEngineChannel);
46 }
47
48 void Voice::SetEngine(LinuxSampler::Engine* pEngine) {
49 Engine* engine = static_cast<Engine*>(pEngine);
50 this->pEngine = engine;
51 this->pDiskThread = engine->pDiskThread;
52 dmsg(6,("Voice::SetEngine()\n"));
53 }
54
55 Voice::SampleInfo Voice::GetSampleInfo() {
56 SampleInfo si;
57 si.SampleRate = pSample->SamplesPerSecond;
58 si.ChannelCount = pSample->Channels;
59 si.FrameSize = pSample->FrameSize;
60 si.BitDepth = pSample->BitDepth;
61 si.TotalFrameCount = pSample->SamplesTotal;
62
63 si.HasLoops = pRegion->SampleLoops;
64 si.LoopStart = (si.HasLoops) ? pRegion->pSampleLoops[0].LoopStart : 0;
65 si.LoopLength = (si.HasLoops) ? pRegion->pSampleLoops[0].LoopLength : 0;
66 si.LoopPlayCount = pSample->LoopPlayCount;
67 si.Unpitched = !pRegion->PitchTrack;
68
69 return si;
70 }
71
72 Voice::RegionInfo Voice::GetRegionInfo() {
73 RegionInfo ri;
74 ri.UnityNote = pRegion->UnityNote;
75 ri.FineTune = pRegion->FineTune;
76 ri.Pan = pRegion->Pan;
77 ri.SampleStartOffset = pRegion->SampleStartOffset;
78
79 ri.EG2PreAttack = pRegion->EG2PreAttack;
80 ri.EG2Attack = pRegion->EG2Attack;
81 ri.EG2Decay1 = pRegion->EG2Decay1;
82 ri.EG2Decay2 = pRegion->EG2Decay2;
83 ri.EG2Sustain = pRegion->EG2Sustain;
84 ri.EG2InfiniteSustain = pRegion->EG2InfiniteSustain;
85 ri.EG2Release = pRegion->EG2Release;
86
87 ri.EG3Attack = pRegion->EG3Attack;
88 ri.EG3Depth = pRegion->EG3Depth;
89 ri.VCFEnabled = pRegion->VCFEnabled;
90 ri.VCFType = Filter::vcf_type_t(pRegion->VCFType);
91 ri.VCFResonance = pRegion->VCFResonance;
92
93 ri.ReleaseTriggerDecay = 0.01053 * (256 >> pRegion->ReleaseTriggerDecay);
94
95 return ri;
96 }
97
98 Voice::InstrumentInfo Voice::GetInstrumentInfo() {
99 InstrumentInfo ii;
100 ii.FineTune = GetGigEngineChannel()->pInstrument->FineTune;
101 ii.PitchbendRange = GetGigEngineChannel()->pInstrument->PitchbendRange;
102
103 return ii;
104 }
105
106 double Voice::GetSampleAttenuation() {
107 return pRegion->SampleAttenuation;
108 }
109
110 double Voice::GetVelocityAttenuation(uint8_t MIDIKeyVelocity) {
111 return pRegion->GetVelocityAttenuation(MIDIKeyVelocity);
112 }
113
114 double Voice::GetVelocityRelease(uint8_t MIDIKeyVelocity) {
115 return pRegion->GetVelocityRelease(MIDIKeyVelocity);
116 }
117
118 void Voice::ProcessCCEvent(RTList<Event>::Iterator& itEvent) {
119 if (itEvent->Type == Event::type_control_change && itEvent->Param.CC.Controller) { // if (valid) MIDI control change event
120 if (pRegion->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&
121 itEvent->Param.CC.Controller == pRegion->AttenuationController.controller_number) {
122 CrossfadeSmoother.update(AbstractEngine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.CC.Value)]);
123 }
124 }
125 }
126
127 void Voice::ProcessChannelPressureEvent(RTList<Event>::Iterator& itEvent) {
128 if (itEvent->Type == Event::type_channel_pressure) { // if (valid) MIDI channel pressure (aftertouch) event
129 if (pRegion->AttenuationController.type == ::gig::attenuation_ctrl_t::type_channelaftertouch) {
130 CrossfadeSmoother.update(AbstractEngine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.ChannelPressure.Value)]);
131 }
132 }
133 }
134
135 void Voice::ProcessPolyphonicKeyPressureEvent(RTList<Event>::Iterator& itEvent) {
136 // Not used so far
137 }
138
139 void Voice::ProcessCutoffEvent(RTList<Event>::Iterator& itEvent) {
140 int ccvalue = itEvent->Param.CC.Value;
141 if (VCFCutoffCtrl.value == ccvalue) return;
142 VCFCutoffCtrl.value = ccvalue;
143 if (pRegion->VCFCutoffControllerInvert) ccvalue = 127 - ccvalue;
144 if (ccvalue < pRegion->VCFVelocityScale) ccvalue = pRegion->VCFVelocityScale;
145 float cutoff = CutoffBase * float(ccvalue);
146 if (cutoff > 127.0f) cutoff = 127.0f;
147
148 VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of fFinalCutoff next time
149 fFinalCutoff = cutoff;
150 }
151
152 double Voice::CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity) {
153 float crossfadeVolume;
154 switch (pRegion->AttenuationController.type) {
155 case ::gig::attenuation_ctrl_t::type_channelaftertouch:
156 crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[128])];
157 break;
158 case ::gig::attenuation_ctrl_t::type_velocity:
159 crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(MIDIKeyVelocity)];
160 break;
161 case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate
162 crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[pRegion->AttenuationController.controller_number])];
163 break;
164 case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined
165 default:
166 crossfadeVolume = 1.0f;
167 }
168
169 return crossfadeVolume;
170 }
171
172 double Voice::GetEG1ControllerValue(uint8_t MIDIKeyVelocity) {
173 double eg1controllervalue = 0;
174 switch (pRegion->EG1Controller.type) {
175 case ::gig::eg1_ctrl_t::type_none: // no controller defined
176 eg1controllervalue = 0;
177 break;
178 case ::gig::eg1_ctrl_t::type_channelaftertouch:
179 eg1controllervalue = GetGigEngineChannel()->ControllerTable[128];
180 break;
181 case ::gig::eg1_ctrl_t::type_velocity:
182 eg1controllervalue = MIDIKeyVelocity;
183 break;
184 case ::gig::eg1_ctrl_t::type_controlchange: // MIDI control change controller
185 eg1controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG1Controller.controller_number];
186 break;
187 }
188 if (pRegion->EG1ControllerInvert) eg1controllervalue = 127 - eg1controllervalue;
189
190 return eg1controllervalue;
191 }
192
193 Voice::EGInfo Voice::CalculateEG1ControllerInfluence(double eg1ControllerValue) {
194 EGInfo eg;
195 // (eg1attack is different from the others)
196 if (pRegion->EG1Attack < 1e-8 && // attack in gig == 0
197 (pRegion->EG1ControllerAttackInfluence == 0 ||
198 eg1ControllerValue <= 10)) { // strange GSt special case
199 eg.Attack = 0; // this will force the attack to be 0 in the call to EG1.trigger
200 } else {
201 eg.Attack = (pRegion->EG1ControllerAttackInfluence) ?
202 1 + 0.031 * (double) (pRegion->EG1ControllerAttackInfluence == 1 ?
203 1 : 1 << pRegion->EG1ControllerAttackInfluence) * eg1ControllerValue : 1.0;
204 }
205 eg.Decay = (pRegion->EG1ControllerDecayInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerDecayInfluence) * eg1ControllerValue : 1.0;
206 eg.Release = (pRegion->EG1ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerReleaseInfluence) * eg1ControllerValue : 1.0;
207
208 return eg;
209 }
210
211 double Voice::GetEG2ControllerValue(uint8_t MIDIKeyVelocity) {
212 double eg2controllervalue = 0;
213 switch (pRegion->EG2Controller.type) {
214 case ::gig::eg2_ctrl_t::type_none: // no controller defined
215 eg2controllervalue = 0;
216 break;
217 case ::gig::eg2_ctrl_t::type_channelaftertouch:
218 eg2controllervalue = GetGigEngineChannel()->ControllerTable[128];
219 break;
220 case ::gig::eg2_ctrl_t::type_velocity:
221 eg2controllervalue = MIDIKeyVelocity;
222 break;
223 case ::gig::eg2_ctrl_t::type_controlchange: // MIDI control change controller
224 eg2controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG2Controller.controller_number];
225 break;
226 }
227 if (pRegion->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue;
228
229 return eg2controllervalue;
230 }
231
232 Voice::EGInfo Voice::CalculateEG2ControllerInfluence(double eg2ControllerValue) {
233 EGInfo eg;
234 eg.Attack = (pRegion->EG2ControllerAttackInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerAttackInfluence) * eg2ControllerValue : 1.0;
235 eg.Decay = (pRegion->EG2ControllerDecayInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerDecayInfluence) * eg2ControllerValue : 1.0;
236 eg.Release = (pRegion->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerReleaseInfluence) * eg2ControllerValue : 1.0;
237
238 return eg;
239 }
240
241 void Voice::InitLFO1() {
242 uint16_t lfo1_internal_depth;
243 switch (pRegion->LFO1Controller) {
244 case ::gig::lfo1_ctrl_internal:
245 lfo1_internal_depth = pRegion->LFO1InternalDepth;
246 pLFO1->ExtController = 0; // no external controller
247 bLFO1Enabled = (lfo1_internal_depth > 0);
248 break;
249 case ::gig::lfo1_ctrl_modwheel:
250 lfo1_internal_depth = 0;
251 pLFO1->ExtController = 1; // MIDI controller 1
252 bLFO1Enabled = (pRegion->LFO1ControlDepth > 0);
253 break;
254 case ::gig::lfo1_ctrl_breath:
255 lfo1_internal_depth = 0;
256 pLFO1->ExtController = 2; // MIDI controller 2
257 bLFO1Enabled = (pRegion->LFO1ControlDepth > 0);
258 break;
259 case ::gig::lfo1_ctrl_internal_modwheel:
260 lfo1_internal_depth = pRegion->LFO1InternalDepth;
261 pLFO1->ExtController = 1; // MIDI controller 1
262 bLFO1Enabled = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
263 break;
264 case ::gig::lfo1_ctrl_internal_breath:
265 lfo1_internal_depth = pRegion->LFO1InternalDepth;
266 pLFO1->ExtController = 2; // MIDI controller 2
267 bLFO1Enabled = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
268 break;
269 default:
270 lfo1_internal_depth = 0;
271 pLFO1->ExtController = 0; // no external controller
272 bLFO1Enabled = false;
273 }
274 if (bLFO1Enabled) {
275 pLFO1->trigger(pRegion->LFO1Frequency,
276 start_level_min,
277 lfo1_internal_depth,
278 pRegion->LFO1ControlDepth,
279 pRegion->LFO1FlipPhase,
280 pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
281 pLFO1->update(pLFO1->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO1->ExtController] : 0);
282 }
283 }
284
285 void Voice::InitLFO2() {
286 uint16_t lfo2_internal_depth;
287 switch (pRegion->LFO2Controller) {
288 case ::gig::lfo2_ctrl_internal:
289 lfo2_internal_depth = pRegion->LFO2InternalDepth;
290 pLFO2->ExtController = 0; // no external controller
291 bLFO2Enabled = (lfo2_internal_depth > 0);
292 break;
293 case ::gig::lfo2_ctrl_modwheel:
294 lfo2_internal_depth = 0;
295 pLFO2->ExtController = 1; // MIDI controller 1
296 bLFO2Enabled = (pRegion->LFO2ControlDepth > 0);
297 break;
298 case ::gig::lfo2_ctrl_foot:
299 lfo2_internal_depth = 0;
300 pLFO2->ExtController = 4; // MIDI controller 4
301 bLFO2Enabled = (pRegion->LFO2ControlDepth > 0);
302 break;
303 case ::gig::lfo2_ctrl_internal_modwheel:
304 lfo2_internal_depth = pRegion->LFO2InternalDepth;
305 pLFO2->ExtController = 1; // MIDI controller 1
306 bLFO2Enabled = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
307 break;
308 case ::gig::lfo2_ctrl_internal_foot:
309 lfo2_internal_depth = pRegion->LFO2InternalDepth;
310 pLFO2->ExtController = 4; // MIDI controller 4
311 bLFO2Enabled = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
312 break;
313 default:
314 lfo2_internal_depth = 0;
315 pLFO2->ExtController = 0; // no external controller
316 bLFO2Enabled = false;
317 }
318 if (bLFO2Enabled) {
319 pLFO2->trigger(pRegion->LFO2Frequency,
320 start_level_max,
321 lfo2_internal_depth,
322 pRegion->LFO2ControlDepth,
323 pRegion->LFO2FlipPhase,
324 pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
325 pLFO2->update(pLFO2->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO2->ExtController] : 0);
326 }
327 }
328
329 void Voice::InitLFO3() {
330 uint16_t lfo3_internal_depth;
331 switch (pRegion->LFO3Controller) {
332 case ::gig::lfo3_ctrl_internal:
333 lfo3_internal_depth = pRegion->LFO3InternalDepth;
334 pLFO3->ExtController = 0; // no external controller
335 bLFO3Enabled = (lfo3_internal_depth > 0);
336 break;
337 case ::gig::lfo3_ctrl_modwheel:
338 lfo3_internal_depth = 0;
339 pLFO3->ExtController = 1; // MIDI controller 1
340 bLFO3Enabled = (pRegion->LFO3ControlDepth > 0);
341 break;
342 case ::gig::lfo3_ctrl_aftertouch:
343 lfo3_internal_depth = 0;
344 pLFO3->ExtController = 128;
345 bLFO3Enabled = true;
346 break;
347 case ::gig::lfo3_ctrl_internal_modwheel:
348 lfo3_internal_depth = pRegion->LFO3InternalDepth;
349 pLFO3->ExtController = 1; // MIDI controller 1
350 bLFO3Enabled = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
351 break;
352 case ::gig::lfo3_ctrl_internal_aftertouch:
353 lfo3_internal_depth = pRegion->LFO3InternalDepth;
354 pLFO3->ExtController = 128;
355 bLFO3Enabled = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
356 break;
357 default:
358 lfo3_internal_depth = 0;
359 pLFO3->ExtController = 0; // no external controller
360 bLFO3Enabled = false;
361 }
362 if (bLFO3Enabled) {
363 pLFO3->trigger(pRegion->LFO3Frequency,
364 start_level_mid,
365 lfo3_internal_depth,
366 pRegion->LFO3ControlDepth,
367 false,
368 pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
369 pLFO3->update(pLFO3->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO3->ExtController] : 0);
370 }
371 }
372
373 float Voice::CalculateCutoffBase(uint8_t MIDIKeyVelocity) {
374 float cutoff = pRegion->GetVelocityCutoff(MIDIKeyVelocity);
375 if (pRegion->VCFKeyboardTracking) {
376 cutoff *= RTMath::CentsToFreqRatioUnlimited((MIDIKey() - pRegion->VCFKeyboardTrackingBreakpoint) * 100);
377 }
378 return cutoff;
379 }
380
381 float Voice::CalculateFinalCutoff(float cutoffBase) {
382 int cvalue;
383 if (VCFCutoffCtrl.controller) {
384 cvalue = GetGigEngineChannel()->ControllerTable[VCFCutoffCtrl.controller];
385 if (pRegion->VCFCutoffControllerInvert) cvalue = 127 - cvalue;
386 // VCFVelocityScale in this case means Minimum cutoff
387 if (cvalue < pRegion->VCFVelocityScale) cvalue = pRegion->VCFVelocityScale;
388 }
389 else {
390 cvalue = pRegion->VCFCutoff;
391 }
392 float fco = cutoffBase * float(cvalue);
393 if (fco > 127.0f) fco = 127.0f;
394
395 return fco;
396 }
397
398 uint8_t Voice::GetVCFCutoffCtrl() {
399 uint8_t ctrl;
400 switch (pRegion->VCFCutoffController) {
401 case ::gig::vcf_cutoff_ctrl_modwheel:
402 ctrl = 1;
403 break;
404 case ::gig::vcf_cutoff_ctrl_effect1:
405 ctrl = 12;
406 break;
407 case ::gig::vcf_cutoff_ctrl_effect2:
408 ctrl = 13;
409 break;
410 case ::gig::vcf_cutoff_ctrl_breath:
411 ctrl = 2;
412 break;
413 case ::gig::vcf_cutoff_ctrl_foot:
414 ctrl = 4;
415 break;
416 case ::gig::vcf_cutoff_ctrl_sustainpedal:
417 ctrl = 64;
418 break;
419 case ::gig::vcf_cutoff_ctrl_softpedal:
420 ctrl = 67;
421 break;
422 case ::gig::vcf_cutoff_ctrl_genpurpose7:
423 ctrl = 82;
424 break;
425 case ::gig::vcf_cutoff_ctrl_genpurpose8:
426 ctrl = 83;
427 break;
428 case ::gig::vcf_cutoff_ctrl_aftertouch:
429 ctrl = 128;
430 break;
431 case ::gig::vcf_cutoff_ctrl_none:
432 default:
433 ctrl = 0;
434 break;
435 }
436
437 return ctrl;
438 }
439
440 uint8_t Voice::GetVCFResonanceCtrl() {
441 uint8_t ctrl;
442 switch (pRegion->VCFResonanceController) {
443 case ::gig::vcf_res_ctrl_genpurpose3:
444 ctrl = 18;
445 break;
446 case ::gig::vcf_res_ctrl_genpurpose4:
447 ctrl = 19;
448 break;
449 case ::gig::vcf_res_ctrl_genpurpose5:
450 ctrl = 80;
451 break;
452 case ::gig::vcf_res_ctrl_genpurpose6:
453 ctrl = 81;
454 break;
455 case ::gig::vcf_res_ctrl_none:
456 default:
457 ctrl = 0;
458 }
459
460 return ctrl;
461 }
462
463 void Voice::TriggerEG1(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
464 EG1.trigger(pRegion->EG1PreAttack,
465 RTMath::Max(pRegion->EG1Attack, 0.0316) * egInfo.Attack,
466 pRegion->EG1Hold,
467 pRegion->EG1Decay1 * egInfo.Decay * velrelease,
468 pRegion->EG1Decay2 * egInfo.Decay * velrelease,
469 pRegion->EG1InfiniteSustain,
470 pRegion->EG1Sustain,
471 RTMath::Max(pRegion->EG1Release * velrelease, 0.014) * egInfo.Release,
472 velocityAttenuation,
473 sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
474 }
475
476 void Voice::TriggerEG2(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
477 EG2.trigger(uint(RgnInfo.EG2PreAttack),
478 RgnInfo.EG2Attack * egInfo.Attack,
479 false,
480 RgnInfo.EG2Decay1 * egInfo.Decay * velrelease,
481 RgnInfo.EG2Decay2 * egInfo.Decay * velrelease,
482 RgnInfo.EG2InfiniteSustain,
483 uint(RgnInfo.EG2Sustain),
484 RgnInfo.EG2Release * egInfo.Release * velrelease,
485 velocityAttenuation,
486 sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
487 }
488
489 void Voice::ProcessGroupEvent(RTList<Event>::Iterator& itEvent) {
490 dmsg(4,("Voice %p processGroupEvents event type=%d", (void*)this, itEvent->Type));
491
492 // TODO: The SustainPedal condition could be wrong, maybe the
493 // check should be if this Voice is in release stage or is a
494 // release sample instead. Need to test this in GSt.
495 // -- Andreas
496 //
497 // Commented sustain pedal check out. I don't think voices of the same
498 // note should be stopped at all, because it doesn't sound naturally
499 // with a drumkit.
500 // -- Christian, 2013-01-08
501 if (itEvent->Param.Note.Key != HostKey() /*||
502 !GetGigEngineChannel()->SustainPedal*/) {
503 dmsg(4,("Voice %p - kill", (void*)this));
504
505 // kill the voice fast
506 pEG1->enterFadeOutStage();
507 }
508 }
509
510 void Voice::CalculateFadeOutCoeff(float FadeOutTime, float SampleRate) {
511 EG1.CalculateFadeOutCoeff(FadeOutTime, SampleRate);
512 }
513
514 int Voice::CalculatePan(uint8_t pan) {
515 int p;
516 // Gst behaviour: -64 and 63 are special cases
517 if (RgnInfo.Pan == -64) p = pan * 2 - 127;
518 else if (RgnInfo.Pan == 63) p = pan * 2;
519 else p = pan + RgnInfo.Pan;
520
521 if (p < 0) return 0;
522 if (p > 127) return 127;
523 return p;
524 }
525
526 }} // namespace LinuxSampler::gig

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