/[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 3655 - (show annotations) (download)
Fri Dec 13 17:14:48 2019 UTC (10 months, 1 week ago) by schoenebeck
File size: 34206 byte(s)
* gig engine: Fixed cutoff controller handling for new filter types.

* Bumped version (2.1.1.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 - 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 if (isGStFilter) {
190 // VCFVelocityScale in this case means "minimum cutoff" for GSt
191 if (ccvalue < MinCutoff()) ccvalue = MinCutoff();
192 } else {
193 // for our own filter types we interpret "minimum cutoff"
194 // differently: GSt handles this as a simple hard limit with the
195 // consequence that a certain range of the controller is simply
196 // dead; so for our filter types we rather remap that to
197 // restrain within the min_cutoff..127 range as well, but
198 // effectively spanned over the entire controller range (0..127)
199 // to avoid such a "dead" lower controller zone
200 ccvalue = MinCutoff() + (ccvalue / 127.f) * float(127 - MinCutoff());
201 }
202
203 float cutoff = CutoffBase * ccvalue;
204 if (cutoff > 127.0f) cutoff = 127.0f;
205
206 // the filter implementations of the original GSt filter types take an
207 // abstract cutoff parameter range of 0..127, whereas our own filter
208 // types take a cutoff parameter in Hz, so remap here:
209 // 0 .. 127 [lin] -> 21 Hz .. 18 kHz [x^4] (center @2.2 kHz)
210 if (!isGStFilter) {
211 cutoff = (cutoff + 29.f) / (127.f + 29.f);
212 cutoff = cutoff * cutoff * cutoff * cutoff * 18000.f;
213 if (cutoff > 0.49f * pEngine->SampleRate)
214 cutoff = 0.49f * pEngine->SampleRate;
215 }
216
217 fFinalCutoff = VCFCutoffCtrl.fvalue = cutoff;
218 }
219
220 double Voice::CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity) {
221 float crossfadeVolume;
222 switch (pRegion->AttenuationController.type) {
223 case ::gig::attenuation_ctrl_t::type_channelaftertouch:
224 crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[128])];
225 break;
226 case ::gig::attenuation_ctrl_t::type_velocity:
227 crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(MIDIKeyVelocity)];
228 break;
229 case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate
230 crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[pRegion->AttenuationController.controller_number])];
231 break;
232 case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined
233 default:
234 crossfadeVolume = 1.0f;
235 }
236
237 return crossfadeVolume;
238 }
239
240 double Voice::GetEG1ControllerValue(uint8_t MIDIKeyVelocity) {
241 double eg1controllervalue = 0;
242 switch (pRegion->EG1Controller.type) {
243 case ::gig::eg1_ctrl_t::type_none: // no controller defined
244 eg1controllervalue = 0;
245 break;
246 case ::gig::eg1_ctrl_t::type_channelaftertouch:
247 eg1controllervalue = GetGigEngineChannel()->ControllerTable[128];
248 break;
249 case ::gig::eg1_ctrl_t::type_velocity:
250 eg1controllervalue = MIDIKeyVelocity;
251 break;
252 case ::gig::eg1_ctrl_t::type_controlchange: // MIDI control change controller
253 eg1controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG1Controller.controller_number];
254 break;
255 }
256 if (pRegion->EG1ControllerInvert) eg1controllervalue = 127 - eg1controllervalue;
257
258 return eg1controllervalue;
259 }
260
261 Voice::EGInfo Voice::CalculateEG1ControllerInfluence(double eg1ControllerValue) {
262 EGInfo eg;
263 // (eg1attack is different from the others)
264 if (pRegion->EG1Attack < 1e-8 && // attack in gig == 0
265 (pRegion->EG1ControllerAttackInfluence == 0 ||
266 eg1ControllerValue <= 10)) { // strange GSt special case
267 eg.Attack = 0; // this will force the attack to be 0 in the call to EG1.trigger
268 } else {
269 eg.Attack = (pRegion->EG1ControllerAttackInfluence) ?
270 1 + 0.031 * (double) (pRegion->EG1ControllerAttackInfluence == 1 ?
271 1 : 1 << pRegion->EG1ControllerAttackInfluence) * eg1ControllerValue : 1.0;
272 }
273 eg.Decay = (pRegion->EG1ControllerDecayInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerDecayInfluence) * eg1ControllerValue : 1.0;
274 eg.Release = (pRegion->EG1ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerReleaseInfluence) * eg1ControllerValue : 1.0;
275
276 return eg;
277 }
278
279 double Voice::GetEG2ControllerValue(uint8_t MIDIKeyVelocity) {
280 double eg2controllervalue = 0;
281 switch (pRegion->EG2Controller.type) {
282 case ::gig::eg2_ctrl_t::type_none: // no controller defined
283 eg2controllervalue = 0;
284 break;
285 case ::gig::eg2_ctrl_t::type_channelaftertouch:
286 eg2controllervalue = GetGigEngineChannel()->ControllerTable[128];
287 break;
288 case ::gig::eg2_ctrl_t::type_velocity:
289 eg2controllervalue = MIDIKeyVelocity;
290 break;
291 case ::gig::eg2_ctrl_t::type_controlchange: // MIDI control change controller
292 eg2controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG2Controller.controller_number];
293 break;
294 }
295 if (pRegion->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue;
296
297 return eg2controllervalue;
298 }
299
300 Voice::EGInfo Voice::CalculateEG2ControllerInfluence(double eg2ControllerValue) {
301 EGInfo eg;
302 eg.Attack = (pRegion->EG2ControllerAttackInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerAttackInfluence) * eg2ControllerValue : 1.0;
303 eg.Decay = (pRegion->EG2ControllerDecayInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerDecayInfluence) * eg2ControllerValue : 1.0;
304 eg.Release = (pRegion->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerReleaseInfluence) * eg2ControllerValue : 1.0;
305
306 return eg;
307 }
308
309 void Voice::InitLFO1() {
310 uint16_t lfo1_internal_depth;
311 switch (pRegion->LFO1Controller) {
312 case ::gig::lfo1_ctrl_internal:
313 lfo1_internal_depth = pRegion->LFO1InternalDepth;
314 pLFO1->ExtController = 0; // no external controller
315 bLFO1Enabled = (lfo1_internal_depth > 0);
316 break;
317 case ::gig::lfo1_ctrl_modwheel:
318 lfo1_internal_depth = 0;
319 pLFO1->ExtController = 1; // MIDI controller 1
320 bLFO1Enabled = (pRegion->LFO1ControlDepth > 0);
321 break;
322 case ::gig::lfo1_ctrl_breath:
323 lfo1_internal_depth = 0;
324 pLFO1->ExtController = 2; // MIDI controller 2
325 bLFO1Enabled = (pRegion->LFO1ControlDepth > 0);
326 break;
327 case ::gig::lfo1_ctrl_internal_modwheel:
328 lfo1_internal_depth = pRegion->LFO1InternalDepth;
329 pLFO1->ExtController = 1; // MIDI controller 1
330 bLFO1Enabled = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
331 break;
332 case ::gig::lfo1_ctrl_internal_breath:
333 lfo1_internal_depth = pRegion->LFO1InternalDepth;
334 pLFO1->ExtController = 2; // MIDI controller 2
335 bLFO1Enabled = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
336 break;
337 default:
338 lfo1_internal_depth = 0;
339 pLFO1->ExtController = 0; // no external controller
340 bLFO1Enabled = false;
341 }
342 if (bLFO1Enabled) {
343 pLFO1->trigger(fromGigLfoWave(pRegion->LFO1WaveForm),
344 pRegion->LFO1Frequency,
345 pRegion->LFO1Phase,
346 LFO::start_level_mid, // see https://sourceforge.net/p/linuxsampler/mailman/linuxsampler-devel/thread/2189307.cNP0Xbctxq%40silver/#msg36774029
347 lfo1_internal_depth,
348 pRegion->LFO1ControlDepth,
349 pRegion->LFO1FlipPhase,
350 pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
351 pLFO1->updateByMIDICtrlValue(pLFO1->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO1->ExtController] : 0);
352 pLFO1->setScriptDepthFactor(
353 pNote->Override.AmpLFODepth.Value,
354 pNote->Override.AmpLFODepth.Final
355 );
356 if (pNote->Override.AmpLFOFreq.isFinal())
357 pLFO1->setScriptFrequencyFinal(
358 pNote->Override.AmpLFOFreq.Value, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE
359 );
360 else
361 pLFO1->setScriptFrequencyFactor(
362 pNote->Override.AmpLFOFreq.Value, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE
363 );
364 }
365 }
366
367 void Voice::InitLFO2() {
368 uint16_t lfo2_internal_depth;
369 switch (pRegion->LFO2Controller) {
370 case ::gig::lfo2_ctrl_internal:
371 lfo2_internal_depth = pRegion->LFO2InternalDepth;
372 pLFO2->ExtController = 0; // no external controller
373 bLFO2Enabled = (lfo2_internal_depth > 0);
374 break;
375 case ::gig::lfo2_ctrl_modwheel:
376 lfo2_internal_depth = 0;
377 pLFO2->ExtController = 1; // MIDI controller 1
378 bLFO2Enabled = (pRegion->LFO2ControlDepth > 0);
379 break;
380 case ::gig::lfo2_ctrl_foot:
381 lfo2_internal_depth = 0;
382 pLFO2->ExtController = 4; // MIDI controller 4
383 bLFO2Enabled = (pRegion->LFO2ControlDepth > 0);
384 break;
385 case ::gig::lfo2_ctrl_internal_modwheel:
386 lfo2_internal_depth = pRegion->LFO2InternalDepth;
387 pLFO2->ExtController = 1; // MIDI controller 1
388 bLFO2Enabled = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
389 break;
390 case ::gig::lfo2_ctrl_internal_foot:
391 lfo2_internal_depth = pRegion->LFO2InternalDepth;
392 pLFO2->ExtController = 4; // MIDI controller 4
393 bLFO2Enabled = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
394 break;
395 default:
396 lfo2_internal_depth = 0;
397 pLFO2->ExtController = 0; // no external controller
398 bLFO2Enabled = false;
399 }
400 if (bLFO2Enabled) {
401 pLFO2->trigger(fromGigLfoWave(pRegion->LFO2WaveForm),
402 pRegion->LFO2Frequency,
403 pRegion->LFO2Phase,
404 LFO::start_level_mid, // see https://sourceforge.net/p/linuxsampler/mailman/linuxsampler-devel/thread/2189307.cNP0Xbctxq%40silver/#msg36774029
405 lfo2_internal_depth,
406 pRegion->LFO2ControlDepth,
407 pRegion->LFO2FlipPhase,
408 pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
409 pLFO2->updateByMIDICtrlValue(pLFO2->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO2->ExtController] : 0);
410 pLFO2->setScriptDepthFactor(
411 pNote->Override.CutoffLFODepth.Value,
412 pNote->Override.CutoffLFODepth.Final
413 );
414 if (pNote->Override.CutoffLFOFreq.isFinal())
415 pLFO2->setScriptFrequencyFinal(pNote->Override.CutoffLFOFreq.Value, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
416 else
417 pLFO2->setScriptFrequencyFactor(pNote->Override.CutoffLFOFreq.Value, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
418 }
419 }
420
421 void Voice::InitLFO3() {
422 uint16_t lfo3_internal_depth;
423 switch (pRegion->LFO3Controller) {
424 case ::gig::lfo3_ctrl_internal:
425 lfo3_internal_depth = pRegion->LFO3InternalDepth;
426 pLFO3->ExtController = 0; // no external controller
427 bLFO3Enabled = (lfo3_internal_depth > 0);
428 break;
429 case ::gig::lfo3_ctrl_modwheel:
430 lfo3_internal_depth = 0;
431 pLFO3->ExtController = 1; // MIDI controller 1
432 bLFO3Enabled = (pRegion->LFO3ControlDepth > 0);
433 break;
434 case ::gig::lfo3_ctrl_aftertouch:
435 lfo3_internal_depth = 0;
436 pLFO3->ExtController = CTRL_TABLE_IDX_AFTERTOUCH;
437 bLFO3Enabled = true;
438 break;
439 case ::gig::lfo3_ctrl_internal_modwheel:
440 lfo3_internal_depth = pRegion->LFO3InternalDepth;
441 pLFO3->ExtController = 1; // MIDI controller 1
442 bLFO3Enabled = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
443 break;
444 case ::gig::lfo3_ctrl_internal_aftertouch:
445 lfo3_internal_depth = pRegion->LFO3InternalDepth;
446 pLFO3->ExtController = CTRL_TABLE_IDX_AFTERTOUCH;
447 bLFO3Enabled = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
448 break;
449 default:
450 lfo3_internal_depth = 0;
451 pLFO3->ExtController = 0; // no external controller
452 bLFO3Enabled = false;
453 }
454 if (bLFO3Enabled) {
455 pLFO3->trigger(fromGigLfoWave(pRegion->LFO3WaveForm),
456 pRegion->LFO3Frequency,
457 pRegion->LFO3Phase,
458 LFO::start_level_max, // see https://sourceforge.net/p/linuxsampler/mailman/linuxsampler-devel/thread/2189307.cNP0Xbctxq%40silver/#msg36774029
459 lfo3_internal_depth,
460 pRegion->LFO3ControlDepth,
461 pRegion->LFO3FlipPhase,
462 pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
463 pLFO3->updateByMIDICtrlValue(pLFO3->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO3->ExtController] : 0);
464 pLFO3->setScriptDepthFactor(
465 pNote->Override.PitchLFODepth.Value,
466 pNote->Override.PitchLFODepth.Final
467 );
468 if (pNote->Override.PitchLFOFreq.isFinal())
469 pLFO3->setScriptFrequencyFinal(pNote->Override.PitchLFOFreq.Value, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
470 else
471 pLFO3->setScriptFrequencyFactor(pNote->Override.PitchLFOFreq.Value, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
472 }
473 }
474
475 float Voice::CalculateCutoffBase(uint8_t MIDIKeyVelocity) {
476 float cutoff = pRegion->GetVelocityCutoff(MIDIKeyVelocity);
477 if (pRegion->VCFKeyboardTracking) {
478 cutoff *= RTMath::CentsToFreqRatioUnlimited((MIDIKey() - pRegion->VCFKeyboardTrackingBreakpoint) * 100);
479 }
480 return cutoff;
481 }
482
483 // This is just called when the voice is triggered. On any subsequent cutoff
484 // controller changes ProcessCutoffEvent() is called instead.
485 float Voice::CalculateFinalCutoff(float cutoffBase) {
486 // if the selected filter type is an official GigaStudio filter type
487 // then we preserve the original (no matter how odd) historical GSt
488 // behaviour identically; for our own filter types though we deviate to
489 // more meaningful behaviours where appropriate
490 const bool isGStFilter = isGStFilterType(pRegion->VCFType);
491
492 // get current cutoff CC or velocity value (always 0..127)
493 float cvalue;
494 if (VCFCutoffCtrl.controller) {
495 cvalue = GetGigEngineChannel()->ControllerTable[VCFCutoffCtrl.controller];
496 if (pRegion->VCFCutoffControllerInvert) cvalue = 127 - cvalue;
497 if (isGStFilter) {
498 // VCFVelocityScale in this case means "minimum cutoff" for GSt
499 if (cvalue < MinCutoff()) cvalue = MinCutoff();
500 } else {
501 // for our own filter types we interpret "minimum cutoff"
502 // differently: GSt handles this as a simple hard limit with the
503 // consequence that a certain range of the controller is simply
504 // dead; so for our filter types we rather remap that to
505 // restrain within the min_cutoff..127 range as well, but
506 // effectively spanned over the entire controller range (0..127)
507 // to avoid such a "dead" lower controller zone
508 cvalue = MinCutoff() + (cvalue / 127.f) * float(127 - MinCutoff());
509 }
510 } else {
511 // in case of velocity, VCFVelocityScale parameter is already
512 // handled on libgig side (so by calling
513 // pRegion->GetVelocityCutoff(velo) in CalculateCutoffBase() above)
514 cvalue = pRegion->VCFCutoff;
515 }
516
517 float fco = cutoffBase * cvalue;
518 if (fco > 127.0f) fco = 127.0f;
519
520 // the filter implementations of the original GSt filter types take an
521 // abstract cutoff parameter range of 0..127, ...
522 if (isGStFilter)
523 return fco;
524
525 // ... whereas our own filter types take a cutoff parameter in Hz, so
526 // remap here 0 .. 127 [lin] -> 21 Hz .. 18 kHz [x^4] (center @2.2 kHz)
527 fco = (fco + 29.f) / (127.f + 29.f);
528 fco = fco * fco * fco * fco * 18000.f;
529 if (fco > 0.49f * pEngine->SampleRate)
530 fco = 0.49f * pEngine->SampleRate;
531 return fco;
532 }
533
534 uint8_t Voice::GetVCFCutoffCtrl() {
535 uint8_t ctrl;
536 switch (pRegion->VCFCutoffController) {
537 case ::gig::vcf_cutoff_ctrl_modwheel:
538 ctrl = 1;
539 break;
540 case ::gig::vcf_cutoff_ctrl_effect1:
541 ctrl = 12;
542 break;
543 case ::gig::vcf_cutoff_ctrl_effect2:
544 ctrl = 13;
545 break;
546 case ::gig::vcf_cutoff_ctrl_breath:
547 ctrl = 2;
548 break;
549 case ::gig::vcf_cutoff_ctrl_foot:
550 ctrl = 4;
551 break;
552 case ::gig::vcf_cutoff_ctrl_sustainpedal:
553 ctrl = 64;
554 break;
555 case ::gig::vcf_cutoff_ctrl_softpedal:
556 ctrl = 67;
557 break;
558 case ::gig::vcf_cutoff_ctrl_genpurpose7:
559 ctrl = 82;
560 break;
561 case ::gig::vcf_cutoff_ctrl_genpurpose8:
562 ctrl = 83;
563 break;
564 case ::gig::vcf_cutoff_ctrl_aftertouch:
565 ctrl = CTRL_TABLE_IDX_AFTERTOUCH;
566 break;
567 case ::gig::vcf_cutoff_ctrl_none:
568 default:
569 ctrl = 0;
570 break;
571 }
572
573 return ctrl;
574 }
575
576 uint8_t Voice::GetVCFResonanceCtrl() {
577 uint8_t ctrl;
578 switch (pRegion->VCFResonanceController) {
579 case ::gig::vcf_res_ctrl_genpurpose3:
580 ctrl = 18;
581 break;
582 case ::gig::vcf_res_ctrl_genpurpose4:
583 ctrl = 19;
584 break;
585 case ::gig::vcf_res_ctrl_genpurpose5:
586 ctrl = 80;
587 break;
588 case ::gig::vcf_res_ctrl_genpurpose6:
589 ctrl = 81;
590 break;
591 case ::gig::vcf_res_ctrl_none:
592 default:
593 ctrl = 0;
594 }
595
596 return ctrl;
597 }
598
599 void Voice::TriggerEG1(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
600 EG1.setStateOptions(
601 pRegion->EG1Options.AttackCancel,
602 pRegion->EG1Options.AttackHoldCancel,
603 pRegion->EG1Options.Decay1Cancel,
604 pRegion->EG1Options.Decay2Cancel,
605 pRegion->EG1Options.ReleaseCancel
606 );
607 EG1.trigger(pRegion->EG1PreAttack,
608 (pNote && pNote->Override.Attack.isFinal()) ?
609 pNote->Override.Attack.Value :
610 RTMath::Max(pRegion->EG1Attack, 0.0316) * egInfo.Attack,
611 pRegion->EG1Hold,
612 (pNote && pNote->Override.Decay.isFinal()) ?
613 pNote->Override.Decay.Value :
614 pRegion->EG1Decay1 * egInfo.Decay * velrelease,
615 (pNote && pNote->Override.Decay.isFinal()) ?
616 pNote->Override.Decay.Value :
617 pRegion->EG1Decay2 * egInfo.Decay * velrelease,
618 pRegion->EG1InfiniteSustain,
619 (pNote && pNote->Override.Sustain.Final) ?
620 uint(pNote->Override.Sustain.Value * 1000.f) :
621 pRegion->EG1Sustain * (pNote ? pNote->Override.Sustain.Value : 1.f),
622 (pNote && pNote->Override.Release.isFinal()) ?
623 pNote->Override.Release.Value :
624 RTMath::Max(pRegion->EG1Release * velrelease, 0.014) * egInfo.Release,
625 velocityAttenuation,
626 sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
627 }
628
629 void Voice::TriggerEG2(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
630 EG2.setStateOptions(
631 pRegion->EG2Options.AttackCancel,
632 pRegion->EG2Options.AttackHoldCancel,
633 pRegion->EG2Options.Decay1Cancel,
634 pRegion->EG2Options.Decay2Cancel,
635 pRegion->EG2Options.ReleaseCancel
636 );
637 EG2.trigger(uint(RgnInfo.EG2PreAttack),
638 (pNote && pNote->Override.CutoffAttack.isFinal()) ?
639 pNote->Override.CutoffAttack.Value :
640 RgnInfo.EG2Attack * egInfo.Attack,
641 false,
642 (pNote && pNote->Override.CutoffDecay.isFinal()) ?
643 pNote->Override.CutoffDecay.Value :
644 RgnInfo.EG2Decay1 * egInfo.Decay * velrelease,
645 (pNote && pNote->Override.CutoffDecay.isFinal()) ?
646 pNote->Override.CutoffDecay.Value :
647 RgnInfo.EG2Decay2 * egInfo.Decay * velrelease,
648 RgnInfo.EG2InfiniteSustain,
649 (pNote && pNote->Override.CutoffSustain.Final) ?
650 uint(pNote->Override.CutoffSustain.Value * 1000.f) :
651 uint(RgnInfo.EG2Sustain),
652 (pNote && pNote->Override.CutoffRelease.isFinal()) ?
653 pNote->Override.CutoffRelease.Value :
654 RgnInfo.EG2Release * egInfo.Release * velrelease,
655 velocityAttenuation,
656 sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
657 }
658
659 void Voice::ProcessGroupEvent(RTList<Event>::Iterator& itEvent) {
660 dmsg(4,("Voice %p processGroupEvents event type=%d", (void*)this, itEvent->Type));
661
662 // TODO: The SustainPedal condition could be wrong, maybe the
663 // check should be if this Voice is in release stage or is a
664 // release sample instead. Need to test this in GSt.
665 // -- Andreas
666 //
667 // Commented sustain pedal check out. I don't think voices of the same
668 // note should be stopped at all, because it doesn't sound naturally
669 // with a drumkit.
670 // -- Christian, 2013-01-08
671 if (itEvent->Param.Note.Key != HostKey() /*||
672 !GetGigEngineChannel()->SustainPedal*/) {
673 dmsg(4,("Voice %p - kill", (void*)this));
674
675 // kill the voice fast
676 pEG1->enterFadeOutStage();
677 }
678 }
679
680 void Voice::CalculateFadeOutCoeff(float FadeOutTime, float SampleRate) {
681 EG1.CalculateFadeOutCoeff(FadeOutTime, SampleRate);
682 }
683
684 int Voice::CalculatePan(uint8_t pan) {
685 int p;
686 // Gst behaviour: -64 and 63 are special cases
687 if (RgnInfo.Pan == -64) p = pan * 2 - 127;
688 else if (RgnInfo.Pan == 63) p = pan * 2;
689 else p = pan + RgnInfo.Pan;
690
691 if (p < 0) return 0;
692 if (p > 127) return 127;
693 return p;
694 }
695
696 release_trigger_t Voice::GetReleaseTriggerFlags() {
697 release_trigger_t flags =
698 (pRegion->NoNoteOffReleaseTrigger) ?
699 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
700 switch (pRegion->SustainReleaseTrigger) {
701 case ::gig::sust_rel_trg_none:
702 break;
703 case ::gig::sust_rel_trg_maxvelocity:
704 flags |= release_trigger_sustain_maxvelocity;
705 break;
706 case ::gig::sust_rel_trg_keyvelocity:
707 flags |= release_trigger_sustain_keyvelocity;
708 break;
709 }
710 return flags;
711 }
712
713 }} // namespace LinuxSampler::gig

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