/[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 3721 - (show annotations) (download)
Mon Jan 20 15:10:05 2020 UTC (4 months, 2 weeks ago) by schoenebeck
File size: 33872 byte(s)
* gig engine: If minimum cutoff is defined, remap cutoff controller CC
  values to really span the entire possible cutoff range (to avoid a
  dead controller zone).

* Bumped version (2.1.1.svn40).

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 Christian Schoenebeck and Grigor Iliev *
8 * Copyright (C) 2010 - 2017 Christian Schoenebeck and Andreas Persson *
9 * *
10 * This program is free software; you can redistribute it and/or modify *
11 * it under the terms of the GNU General Public License as published by *
12 * the Free Software Foundation; either version 2 of the License, or *
13 * (at your option) any later version. *
14 * *
15 * This program is distributed in the hope that it will be useful, *
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
18 * GNU General Public License for more details. *
19 * *
20 * You should have received a copy of the GNU General Public License *
21 * along with this program; if not, write to the Free Software *
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, *
23 * MA 02111-1307 USA *
24 ***************************************************************************/
25
26 #include "../../common/Features.h"
27 #include "Synthesizer.h"
28 #include "Profiler.h"
29 #include "Engine.h"
30 #include "EngineChannel.h"
31
32 #include "Voice.h"
33
34 namespace LinuxSampler { namespace gig {
35
36 // sanity checks: fromGigLfoWave() assumes equally mapped enums
37 static_assert(int64_t(::gig::lfo_wave_sine) == int64_t(LFO::wave_sine),
38 "enum LFO::wave_t not equally value mapped to libgig's enum ::gig::lfo_wave_t");
39 static_assert(int64_t(::gig::lfo_wave_triangle) == int64_t(LFO::wave_triangle),
40 "enum LFO::wave_t not equally value mapped to libgig's enum ::gig::lfo_wave_t");
41 static_assert(int64_t(::gig::lfo_wave_saw) == int64_t(LFO::wave_saw),
42 "enum LFO::wave_t not equally value mapped to libgig's enum ::gig::lfo_wave_t");
43 static_assert(int64_t(::gig::lfo_wave_square) == int64_t(LFO::wave_square),
44 "enum LFO::wave_t not equally value mapped to libgig's enum ::gig::lfo_wave_t");
45
46 // converts ::gig::lfo_wave_t (libgig) -> LFO::wave_t (LinuxSampler)
47 inline LFO::wave_t fromGigLfoWave(::gig::lfo_wave_t wave) {
48 // simply assuming equally mapped enums on both sides
49 return static_cast<LFO::wave_t>(wave);
50 }
51
52 // Returns true for GigaStudio's original filter types (which are resembled
53 // by LS very accurately with same frequency response and patch settings
54 // behaviour), false for our own LS specific filter implementation types.
55 constexpr bool isGStFilterType(::gig::vcf_type_t type) {
56 return type == ::gig::vcf_type_lowpass ||
57 type == ::gig::vcf_type_lowpassturbo ||
58 type == ::gig::vcf_type_bandpass ||
59 type == ::gig::vcf_type_highpass ||
60 type == ::gig::vcf_type_bandreject;
61 }
62
63 Voice::Voice() {
64 pEngine = NULL;
65 pEG1 = &EG1;
66 pEG2 = &EG2;
67 }
68
69 Voice::~Voice() {
70 }
71
72 EngineChannel* Voice::GetGigEngineChannel() {
73 return static_cast<EngineChannel*>(pEngineChannel);
74 }
75
76 void Voice::SetEngine(LinuxSampler::Engine* pEngine) {
77 Engine* engine = static_cast<Engine*>(pEngine);
78 this->pEngine = engine;
79 this->pDiskThread = engine->pDiskThread;
80 dmsg(6,("Voice::SetEngine()\n"));
81 }
82
83 Voice::SampleInfo Voice::GetSampleInfo() {
84 SampleInfo si;
85 si.SampleRate = pSample->SamplesPerSecond;
86 si.ChannelCount = pSample->Channels;
87 si.FrameSize = pSample->FrameSize;
88 si.BitDepth = pSample->BitDepth;
89 si.TotalFrameCount = (uint)pSample->SamplesTotal;
90
91 si.HasLoops = pRegion->SampleLoops;
92 si.LoopStart = (si.HasLoops) ? pRegion->pSampleLoops[0].LoopStart : 0;
93 si.LoopLength = (si.HasLoops) ? pRegion->pSampleLoops[0].LoopLength : 0;
94 si.LoopPlayCount = pSample->LoopPlayCount;
95 si.Unpitched = !pRegion->PitchTrack;
96
97 return si;
98 }
99
100 Voice::RegionInfo Voice::GetRegionInfo() {
101 RegionInfo ri;
102 ri.UnityNote = pRegion->UnityNote;
103 ri.FineTune = pRegion->FineTune;
104 ri.Pan = pRegion->Pan;
105 ri.SampleStartOffset = pRegion->SampleStartOffset;
106
107 ri.EG2PreAttack = pRegion->EG2PreAttack;
108 ri.EG2Attack = pRegion->EG2Attack;
109 ri.EG2Decay1 = pRegion->EG2Decay1;
110 ri.EG2Decay2 = pRegion->EG2Decay2;
111 ri.EG2Sustain = pRegion->EG2Sustain;
112 ri.EG2InfiniteSustain = pRegion->EG2InfiniteSustain;
113 ri.EG2Release = pRegion->EG2Release;
114
115 ri.EG3Attack = pRegion->EG3Attack;
116 ri.EG3Depth = pRegion->EG3Depth;
117 ri.VCFEnabled = pRegion->VCFEnabled;
118 ri.VCFType = Filter::vcf_type_t(pRegion->VCFType);
119 ri.VCFResonance = pRegion->VCFResonance;
120
121 ri.ReleaseTriggerDecay = 0.01053 * (256 >> pRegion->ReleaseTriggerDecay);
122
123 return ri;
124 }
125
126 Voice::InstrumentInfo Voice::GetInstrumentInfo() {
127 InstrumentInfo ii;
128 ii.FineTune = GetGigEngineChannel()->pInstrument->FineTune;
129 ii.PitchbendRange = GetGigEngineChannel()->pInstrument->PitchbendRange;
130
131 return ii;
132 }
133
134 double Voice::GetSampleAttenuation() {
135 return pRegion->SampleAttenuation;
136 }
137
138 double Voice::GetVelocityAttenuation(uint8_t MIDIKeyVelocity) {
139 return pRegion->GetVelocityAttenuation(MIDIKeyVelocity);
140 }
141
142 double Voice::GetVelocityRelease(uint8_t MIDIKeyVelocity) {
143 return pRegion->GetVelocityRelease(MIDIKeyVelocity);
144 }
145
146 void Voice::ProcessCCEvent(RTList<Event>::Iterator& itEvent) {
147 if (itEvent->Type == Event::type_control_change && itEvent->Param.CC.Controller) { // if (valid) MIDI control change event
148 if (pRegion->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&
149 itEvent->Param.CC.Controller == pRegion->AttenuationController.controller_number) {
150 CrossfadeSmoother.update(AbstractEngine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.CC.Value)]);
151 }
152 }
153 }
154
155 void Voice::ProcessChannelPressureEvent(RTList<Event>::Iterator& itEvent) {
156 if (itEvent->Type == Event::type_channel_pressure) { // if (valid) MIDI channel pressure (aftertouch) event
157 if (pRegion->AttenuationController.type == ::gig::attenuation_ctrl_t::type_channelaftertouch) {
158 CrossfadeSmoother.update(AbstractEngine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.ChannelPressure.Value)]);
159 }
160 }
161 }
162
163 void Voice::ProcessPolyphonicKeyPressureEvent(RTList<Event>::Iterator& itEvent) {
164 // Not used so far
165 }
166
167 uint8_t Voice::MinCutoff() const {
168 // If there's a cutoff controller defined then VCFVelocityScale means
169 // "minimum cutoff". If there is no MIDI controller defined for cutoff
170 // then VCFVelocityScale is already taken into account on libgig side
171 // instead by call to pRegion->GetVelocityCutoff(MIDIKeyVelocity).
172 return pRegion->VCFVelocityScale;
173 }
174
175 // This is called on any cutoff controller changes, however not when the
176 // voice is triggered. So the initial cutoff value is retrieved by a call
177 // to CalculateFinalCutoff() instead.
178 void Voice::ProcessCutoffEvent(RTList<Event>::Iterator& itEvent) {
179 if (VCFCutoffCtrl.value == itEvent->Param.CC.Value) return;
180 float ccvalue = VCFCutoffCtrl.value = itEvent->Param.CC.Value;
181
182 // if the selected filter type is an official GigaStudio filter type
183 // then we preserve the original (no matter how odd) historical GSt
184 // behaviour identically; for our own filter types though we deviate to
185 // more meaningful behaviours where appropriate
186 const bool isGStFilter = isGStFilterType(pRegion->VCFType);
187
188 if (pRegion->VCFCutoffControllerInvert) ccvalue = 127 - ccvalue;
189 // interpret "minimum cutoff" not simply as hard limit, rather
190 // restrain it to min_cutoff..127 range, but spanned / remapped over
191 // the entire controller range (0..127) to avoid a "dead" lower
192 // controller zone (that is to avoid a certain CC value range where
193 // the controller would not change the cutoff frequency)
194 ccvalue = MinCutoff() + (ccvalue / 127.f) * float(127 - MinCutoff());
195
196 float cutoff = CutoffBase * ccvalue;
197 if (cutoff > 127.0f) cutoff = 127.0f;
198
199 // the filter implementations of the original GSt filter types take an
200 // abstract cutoff parameter range of 0..127, whereas our own filter
201 // types take a cutoff parameter in Hz, so remap here:
202 // 0 .. 127 [lin] -> 21 Hz .. 18 kHz [x^4] (center @2.2 kHz)
203 if (!isGStFilter) {
204 cutoff = (cutoff + 29.f) / (127.f + 29.f);
205 cutoff = cutoff * cutoff * cutoff * cutoff * 18000.f;
206 if (cutoff > 0.49f * pEngine->SampleRate)
207 cutoff = 0.49f * pEngine->SampleRate;
208 }
209
210 fFinalCutoff = VCFCutoffCtrl.fvalue = cutoff;
211 }
212
213 double Voice::CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity) {
214 float crossfadeVolume;
215 switch (pRegion->AttenuationController.type) {
216 case ::gig::attenuation_ctrl_t::type_channelaftertouch:
217 crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[128])];
218 break;
219 case ::gig::attenuation_ctrl_t::type_velocity:
220 crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(MIDIKeyVelocity)];
221 break;
222 case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate
223 crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[pRegion->AttenuationController.controller_number])];
224 break;
225 case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined
226 default:
227 crossfadeVolume = 1.0f;
228 }
229
230 return crossfadeVolume;
231 }
232
233 double Voice::GetEG1ControllerValue(uint8_t MIDIKeyVelocity) {
234 double eg1controllervalue = 0;
235 switch (pRegion->EG1Controller.type) {
236 case ::gig::eg1_ctrl_t::type_none: // no controller defined
237 eg1controllervalue = 0;
238 break;
239 case ::gig::eg1_ctrl_t::type_channelaftertouch:
240 eg1controllervalue = GetGigEngineChannel()->ControllerTable[128];
241 break;
242 case ::gig::eg1_ctrl_t::type_velocity:
243 eg1controllervalue = MIDIKeyVelocity;
244 break;
245 case ::gig::eg1_ctrl_t::type_controlchange: // MIDI control change controller
246 eg1controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG1Controller.controller_number];
247 break;
248 }
249 if (pRegion->EG1ControllerInvert) eg1controllervalue = 127 - eg1controllervalue;
250
251 return eg1controllervalue;
252 }
253
254 Voice::EGInfo Voice::CalculateEG1ControllerInfluence(double eg1ControllerValue) {
255 EGInfo eg;
256 // (eg1attack is different from the others)
257 if (pRegion->EG1Attack < 1e-8 && // attack in gig == 0
258 (pRegion->EG1ControllerAttackInfluence == 0 ||
259 eg1ControllerValue <= 10)) { // strange GSt special case
260 eg.Attack = 0; // this will force the attack to be 0 in the call to EG1.trigger
261 } else {
262 eg.Attack = (pRegion->EG1ControllerAttackInfluence) ?
263 1 + 0.031 * (double) (pRegion->EG1ControllerAttackInfluence == 1 ?
264 1 : 1 << pRegion->EG1ControllerAttackInfluence) * eg1ControllerValue : 1.0;
265 }
266 eg.Decay = (pRegion->EG1ControllerDecayInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerDecayInfluence) * eg1ControllerValue : 1.0;
267 eg.Release = (pRegion->EG1ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerReleaseInfluence) * eg1ControllerValue : 1.0;
268
269 return eg;
270 }
271
272 double Voice::GetEG2ControllerValue(uint8_t MIDIKeyVelocity) {
273 double eg2controllervalue = 0;
274 switch (pRegion->EG2Controller.type) {
275 case ::gig::eg2_ctrl_t::type_none: // no controller defined
276 eg2controllervalue = 0;
277 break;
278 case ::gig::eg2_ctrl_t::type_channelaftertouch:
279 eg2controllervalue = GetGigEngineChannel()->ControllerTable[128];
280 break;
281 case ::gig::eg2_ctrl_t::type_velocity:
282 eg2controllervalue = MIDIKeyVelocity;
283 break;
284 case ::gig::eg2_ctrl_t::type_controlchange: // MIDI control change controller
285 eg2controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG2Controller.controller_number];
286 break;
287 }
288 if (pRegion->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue;
289
290 return eg2controllervalue;
291 }
292
293 Voice::EGInfo Voice::CalculateEG2ControllerInfluence(double eg2ControllerValue) {
294 EGInfo eg;
295 eg.Attack = (pRegion->EG2ControllerAttackInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerAttackInfluence) * eg2ControllerValue : 1.0;
296 eg.Decay = (pRegion->EG2ControllerDecayInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerDecayInfluence) * eg2ControllerValue : 1.0;
297 eg.Release = (pRegion->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerReleaseInfluence) * eg2ControllerValue : 1.0;
298
299 return eg;
300 }
301
302 void Voice::InitLFO1() {
303 uint16_t lfo1_internal_depth;
304 switch (pRegion->LFO1Controller) {
305 case ::gig::lfo1_ctrl_internal:
306 lfo1_internal_depth = pRegion->LFO1InternalDepth;
307 pLFO1->ExtController = 0; // no external controller
308 bLFO1Enabled = (lfo1_internal_depth > 0);
309 break;
310 case ::gig::lfo1_ctrl_modwheel:
311 lfo1_internal_depth = 0;
312 pLFO1->ExtController = 1; // MIDI controller 1
313 bLFO1Enabled = (pRegion->LFO1ControlDepth > 0);
314 break;
315 case ::gig::lfo1_ctrl_breath:
316 lfo1_internal_depth = 0;
317 pLFO1->ExtController = 2; // MIDI controller 2
318 bLFO1Enabled = (pRegion->LFO1ControlDepth > 0);
319 break;
320 case ::gig::lfo1_ctrl_internal_modwheel:
321 lfo1_internal_depth = pRegion->LFO1InternalDepth;
322 pLFO1->ExtController = 1; // MIDI controller 1
323 bLFO1Enabled = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
324 break;
325 case ::gig::lfo1_ctrl_internal_breath:
326 lfo1_internal_depth = pRegion->LFO1InternalDepth;
327 pLFO1->ExtController = 2; // MIDI controller 2
328 bLFO1Enabled = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
329 break;
330 default:
331 lfo1_internal_depth = 0;
332 pLFO1->ExtController = 0; // no external controller
333 bLFO1Enabled = false;
334 }
335 if (bLFO1Enabled) {
336 pLFO1->trigger(fromGigLfoWave(pRegion->LFO1WaveForm),
337 pRegion->LFO1Frequency,
338 pRegion->LFO1Phase,
339 LFO::start_level_mid, // see https://sourceforge.net/p/linuxsampler/mailman/linuxsampler-devel/thread/2189307.cNP0Xbctxq%40silver/#msg36774029
340 lfo1_internal_depth,
341 pRegion->LFO1ControlDepth,
342 pRegion->LFO1FlipPhase,
343 pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
344 pLFO1->updateByMIDICtrlValue(pLFO1->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO1->ExtController] : 0);
345 pLFO1->setScriptDepthFactor(
346 pNote->Override.AmpLFODepth.Value,
347 pNote->Override.AmpLFODepth.Final
348 );
349 if (pNote->Override.AmpLFOFreq.isFinal())
350 pLFO1->setScriptFrequencyFinal(
351 pNote->Override.AmpLFOFreq.Value, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE
352 );
353 else
354 pLFO1->setScriptFrequencyFactor(
355 pNote->Override.AmpLFOFreq.Value, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE
356 );
357 }
358 }
359
360 void Voice::InitLFO2() {
361 uint16_t lfo2_internal_depth;
362 switch (pRegion->LFO2Controller) {
363 case ::gig::lfo2_ctrl_internal:
364 lfo2_internal_depth = pRegion->LFO2InternalDepth;
365 pLFO2->ExtController = 0; // no external controller
366 bLFO2Enabled = (lfo2_internal_depth > 0);
367 break;
368 case ::gig::lfo2_ctrl_modwheel:
369 lfo2_internal_depth = 0;
370 pLFO2->ExtController = 1; // MIDI controller 1
371 bLFO2Enabled = (pRegion->LFO2ControlDepth > 0);
372 break;
373 case ::gig::lfo2_ctrl_foot:
374 lfo2_internal_depth = 0;
375 pLFO2->ExtController = 4; // MIDI controller 4
376 bLFO2Enabled = (pRegion->LFO2ControlDepth > 0);
377 break;
378 case ::gig::lfo2_ctrl_internal_modwheel:
379 lfo2_internal_depth = pRegion->LFO2InternalDepth;
380 pLFO2->ExtController = 1; // MIDI controller 1
381 bLFO2Enabled = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
382 break;
383 case ::gig::lfo2_ctrl_internal_foot:
384 lfo2_internal_depth = pRegion->LFO2InternalDepth;
385 pLFO2->ExtController = 4; // MIDI controller 4
386 bLFO2Enabled = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
387 break;
388 default:
389 lfo2_internal_depth = 0;
390 pLFO2->ExtController = 0; // no external controller
391 bLFO2Enabled = false;
392 }
393 if (bLFO2Enabled) {
394 pLFO2->trigger(fromGigLfoWave(pRegion->LFO2WaveForm),
395 pRegion->LFO2Frequency,
396 pRegion->LFO2Phase,
397 LFO::start_level_mid, // see https://sourceforge.net/p/linuxsampler/mailman/linuxsampler-devel/thread/2189307.cNP0Xbctxq%40silver/#msg36774029
398 lfo2_internal_depth,
399 pRegion->LFO2ControlDepth,
400 pRegion->LFO2FlipPhase,
401 pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
402 pLFO2->updateByMIDICtrlValue(pLFO2->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO2->ExtController] : 0);
403 pLFO2->setScriptDepthFactor(
404 pNote->Override.CutoffLFODepth.Value,
405 pNote->Override.CutoffLFODepth.Final
406 );
407 if (pNote->Override.CutoffLFOFreq.isFinal())
408 pLFO2->setScriptFrequencyFinal(pNote->Override.CutoffLFOFreq.Value, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
409 else
410 pLFO2->setScriptFrequencyFactor(pNote->Override.CutoffLFOFreq.Value, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
411 }
412 }
413
414 void Voice::InitLFO3() {
415 uint16_t lfo3_internal_depth;
416 switch (pRegion->LFO3Controller) {
417 case ::gig::lfo3_ctrl_internal:
418 lfo3_internal_depth = pRegion->LFO3InternalDepth;
419 pLFO3->ExtController = 0; // no external controller
420 bLFO3Enabled = (lfo3_internal_depth > 0);
421 break;
422 case ::gig::lfo3_ctrl_modwheel:
423 lfo3_internal_depth = 0;
424 pLFO3->ExtController = 1; // MIDI controller 1
425 bLFO3Enabled = (pRegion->LFO3ControlDepth > 0);
426 break;
427 case ::gig::lfo3_ctrl_aftertouch:
428 lfo3_internal_depth = 0;
429 pLFO3->ExtController = CTRL_TABLE_IDX_AFTERTOUCH;
430 bLFO3Enabled = true;
431 break;
432 case ::gig::lfo3_ctrl_internal_modwheel:
433 lfo3_internal_depth = pRegion->LFO3InternalDepth;
434 pLFO3->ExtController = 1; // MIDI controller 1
435 bLFO3Enabled = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
436 break;
437 case ::gig::lfo3_ctrl_internal_aftertouch:
438 lfo3_internal_depth = pRegion->LFO3InternalDepth;
439 pLFO3->ExtController = CTRL_TABLE_IDX_AFTERTOUCH;
440 bLFO3Enabled = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
441 break;
442 default:
443 lfo3_internal_depth = 0;
444 pLFO3->ExtController = 0; // no external controller
445 bLFO3Enabled = false;
446 }
447 if (bLFO3Enabled) {
448 pLFO3->trigger(fromGigLfoWave(pRegion->LFO3WaveForm),
449 pRegion->LFO3Frequency,
450 pRegion->LFO3Phase,
451 LFO::start_level_max, // see https://sourceforge.net/p/linuxsampler/mailman/linuxsampler-devel/thread/2189307.cNP0Xbctxq%40silver/#msg36774029
452 lfo3_internal_depth,
453 pRegion->LFO3ControlDepth,
454 pRegion->LFO3FlipPhase,
455 pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
456 pLFO3->updateByMIDICtrlValue(pLFO3->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO3->ExtController] : 0);
457 pLFO3->setScriptDepthFactor(
458 pNote->Override.PitchLFODepth.Value,
459 pNote->Override.PitchLFODepth.Final
460 );
461 if (pNote->Override.PitchLFOFreq.isFinal())
462 pLFO3->setScriptFrequencyFinal(pNote->Override.PitchLFOFreq.Value, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
463 else
464 pLFO3->setScriptFrequencyFactor(pNote->Override.PitchLFOFreq.Value, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
465 }
466 }
467
468 float Voice::CalculateCutoffBase(uint8_t MIDIKeyVelocity) {
469 float cutoff = pRegion->GetVelocityCutoff(MIDIKeyVelocity);
470 if (pRegion->VCFKeyboardTracking) {
471 cutoff *= RTMath::CentsToFreqRatioUnlimited((MIDIKey() - pRegion->VCFKeyboardTrackingBreakpoint) * 100);
472 }
473 return cutoff;
474 }
475
476 // This is just called when the voice is triggered. On any subsequent cutoff
477 // controller changes ProcessCutoffEvent() is called instead.
478 float Voice::CalculateFinalCutoff(float cutoffBase) {
479 // if the selected filter type is an official GigaStudio filter type
480 // then we preserve the original (no matter how odd) historical GSt
481 // behaviour identically; for our own filter types though we deviate to
482 // more meaningful behaviours where appropriate
483 const bool isGStFilter = isGStFilterType(pRegion->VCFType);
484
485 // get current cutoff CC or velocity value (always 0..127)
486 float cvalue;
487 if (VCFCutoffCtrl.controller) {
488 cvalue = GetGigEngineChannel()->ControllerTable[VCFCutoffCtrl.controller];
489 if (pRegion->VCFCutoffControllerInvert) cvalue = 127 - cvalue;
490 if (isGStFilter) {
491 // VCFVelocityScale in this case means "minimum cutoff" for GSt
492 if (cvalue < MinCutoff()) cvalue = MinCutoff();
493 } else {
494 // for our own filter types we interpret "minimum cutoff"
495 // differently: GSt handles this as a simple hard limit with the
496 // consequence that a certain range of the controller is simply
497 // dead; so for our filter types we rather remap that to
498 // restrain within the min_cutoff..127 range as well, but
499 // effectively spanned over the entire controller range (0..127)
500 // to avoid such a "dead" lower controller zone
501 cvalue = MinCutoff() + (cvalue / 127.f) * float(127 - MinCutoff());
502 }
503 } else {
504 // in case of velocity, VCFVelocityScale parameter is already
505 // handled on libgig side (so by calling
506 // pRegion->GetVelocityCutoff(velo) in CalculateCutoffBase() above)
507 cvalue = pRegion->VCFCutoff;
508 }
509
510 float fco = cutoffBase * cvalue;
511 if (fco > 127.0f) fco = 127.0f;
512
513 // the filter implementations of the original GSt filter types take an
514 // abstract cutoff parameter range of 0..127, ...
515 if (isGStFilter)
516 return fco;
517
518 // ... whereas our own filter types take a cutoff parameter in Hz, so
519 // remap here 0 .. 127 [lin] -> 21 Hz .. 18 kHz [x^4] (center @2.2 kHz)
520 fco = (fco + 29.f) / (127.f + 29.f);
521 fco = fco * fco * fco * fco * 18000.f;
522 if (fco > 0.49f * pEngine->SampleRate)
523 fco = 0.49f * pEngine->SampleRate;
524 return fco;
525 }
526
527 uint8_t Voice::GetVCFCutoffCtrl() {
528 uint8_t ctrl;
529 switch (pRegion->VCFCutoffController) {
530 case ::gig::vcf_cutoff_ctrl_modwheel:
531 ctrl = 1;
532 break;
533 case ::gig::vcf_cutoff_ctrl_effect1:
534 ctrl = 12;
535 break;
536 case ::gig::vcf_cutoff_ctrl_effect2:
537 ctrl = 13;
538 break;
539 case ::gig::vcf_cutoff_ctrl_breath:
540 ctrl = 2;
541 break;
542 case ::gig::vcf_cutoff_ctrl_foot:
543 ctrl = 4;
544 break;
545 case ::gig::vcf_cutoff_ctrl_sustainpedal:
546 ctrl = 64;
547 break;
548 case ::gig::vcf_cutoff_ctrl_softpedal:
549 ctrl = 67;
550 break;
551 case ::gig::vcf_cutoff_ctrl_genpurpose7:
552 ctrl = 82;
553 break;
554 case ::gig::vcf_cutoff_ctrl_genpurpose8:
555 ctrl = 83;
556 break;
557 case ::gig::vcf_cutoff_ctrl_aftertouch:
558 ctrl = CTRL_TABLE_IDX_AFTERTOUCH;
559 break;
560 case ::gig::vcf_cutoff_ctrl_none:
561 default:
562 ctrl = 0;
563 break;
564 }
565
566 return ctrl;
567 }
568
569 uint8_t Voice::GetVCFResonanceCtrl() {
570 uint8_t ctrl;
571 switch (pRegion->VCFResonanceController) {
572 case ::gig::vcf_res_ctrl_genpurpose3:
573 ctrl = 18;
574 break;
575 case ::gig::vcf_res_ctrl_genpurpose4:
576 ctrl = 19;
577 break;
578 case ::gig::vcf_res_ctrl_genpurpose5:
579 ctrl = 80;
580 break;
581 case ::gig::vcf_res_ctrl_genpurpose6:
582 ctrl = 81;
583 break;
584 case ::gig::vcf_res_ctrl_none:
585 default:
586 ctrl = 0;
587 }
588
589 return ctrl;
590 }
591
592 void Voice::TriggerEG1(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
593 EG1.setStateOptions(
594 pRegion->EG1Options.AttackCancel,
595 pRegion->EG1Options.AttackHoldCancel,
596 pRegion->EG1Options.Decay1Cancel,
597 pRegion->EG1Options.Decay2Cancel,
598 pRegion->EG1Options.ReleaseCancel
599 );
600 EG1.trigger(pRegion->EG1PreAttack,
601 (pNote && pNote->Override.Attack.isFinal()) ?
602 pNote->Override.Attack.Value :
603 RTMath::Max(pRegion->EG1Attack, 0.0316) * egInfo.Attack,
604 pRegion->EG1Hold,
605 (pNote && pNote->Override.Decay.isFinal()) ?
606 pNote->Override.Decay.Value :
607 pRegion->EG1Decay1 * egInfo.Decay * velrelease,
608 (pNote && pNote->Override.Decay.isFinal()) ?
609 pNote->Override.Decay.Value :
610 pRegion->EG1Decay2 * egInfo.Decay * velrelease,
611 pRegion->EG1InfiniteSustain,
612 (pNote && pNote->Override.Sustain.Final) ?
613 uint(pNote->Override.Sustain.Value * 1000.f) :
614 pRegion->EG1Sustain * (pNote ? pNote->Override.Sustain.Value : 1.f),
615 (pNote && pNote->Override.Release.isFinal()) ?
616 pNote->Override.Release.Value :
617 RTMath::Max(pRegion->EG1Release * velrelease, 0.014) * egInfo.Release,
618 velocityAttenuation,
619 sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
620 }
621
622 void Voice::TriggerEG2(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
623 EG2.setStateOptions(
624 pRegion->EG2Options.AttackCancel,
625 pRegion->EG2Options.AttackHoldCancel,
626 pRegion->EG2Options.Decay1Cancel,
627 pRegion->EG2Options.Decay2Cancel,
628 pRegion->EG2Options.ReleaseCancel
629 );
630 EG2.trigger(uint(RgnInfo.EG2PreAttack),
631 (pNote && pNote->Override.CutoffAttack.isFinal()) ?
632 pNote->Override.CutoffAttack.Value :
633 RgnInfo.EG2Attack * egInfo.Attack,
634 false,
635 (pNote && pNote->Override.CutoffDecay.isFinal()) ?
636 pNote->Override.CutoffDecay.Value :
637 RgnInfo.EG2Decay1 * egInfo.Decay * velrelease,
638 (pNote && pNote->Override.CutoffDecay.isFinal()) ?
639 pNote->Override.CutoffDecay.Value :
640 RgnInfo.EG2Decay2 * egInfo.Decay * velrelease,
641 RgnInfo.EG2InfiniteSustain,
642 (pNote && pNote->Override.CutoffSustain.Final) ?
643 uint(pNote->Override.CutoffSustain.Value * 1000.f) :
644 uint(RgnInfo.EG2Sustain),
645 (pNote && pNote->Override.CutoffRelease.isFinal()) ?
646 pNote->Override.CutoffRelease.Value :
647 RgnInfo.EG2Release * egInfo.Release * velrelease,
648 velocityAttenuation,
649 sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
650 }
651
652 void Voice::ProcessGroupEvent(RTList<Event>::Iterator& itEvent) {
653 dmsg(4,("Voice %p processGroupEvents event type=%d", (void*)this, itEvent->Type));
654
655 // TODO: The SustainPedal condition could be wrong, maybe the
656 // check should be if this Voice is in release stage or is a
657 // release sample instead. Need to test this in GSt.
658 // -- Andreas
659 //
660 // Commented sustain pedal check out. I don't think voices of the same
661 // note should be stopped at all, because it doesn't sound naturally
662 // with a drumkit.
663 // -- Christian, 2013-01-08
664 if (itEvent->Param.Note.Key != HostKey() /*||
665 !GetGigEngineChannel()->SustainPedal*/) {
666 dmsg(4,("Voice %p - kill", (void*)this));
667
668 // kill the voice fast
669 pEG1->enterFadeOutStage();
670 }
671 }
672
673 void Voice::CalculateFadeOutCoeff(float FadeOutTime, float SampleRate) {
674 EG1.CalculateFadeOutCoeff(FadeOutTime, SampleRate);
675 }
676
677 int Voice::CalculatePan(uint8_t pan) {
678 int p;
679 // Gst behaviour: -64 and 63 are special cases
680 if (RgnInfo.Pan == -64) p = pan * 2 - 127;
681 else if (RgnInfo.Pan == 63) p = pan * 2;
682 else p = pan + RgnInfo.Pan;
683
684 if (p < 0) return 0;
685 if (p > 127) return 127;
686 return p;
687 }
688
689 release_trigger_t Voice::GetReleaseTriggerFlags() {
690 release_trigger_t flags =
691 (pRegion->NoNoteOffReleaseTrigger) ?
692 release_trigger_none : release_trigger_noteoff; //HACK: currently this method is actually only called by EngineBase if it already knows that this voice requires release trigger, so I took the short way instead of checking (again) the existence of a ::gig::dimension_releasetrigger
693 switch (pRegion->SustainReleaseTrigger) {
694 case ::gig::sust_rel_trg_none:
695 break;
696 case ::gig::sust_rel_trg_maxvelocity:
697 flags |= release_trigger_sustain_maxvelocity;
698 break;
699 case ::gig::sust_rel_trg_keyvelocity:
700 flags |= release_trigger_sustain_keyvelocity;
701 break;
702 }
703 return flags;
704 }
705
706 }} // namespace LinuxSampler::gig

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