/[svn]/linuxsampler/trunk/src/engines/sfz/Voice.cpp
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Annotation of /linuxsampler/trunk/src/engines/sfz/Voice.cpp

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Revision 2203 - (hide annotations) (download)
Sat Jul 9 16:44:27 2011 UTC (7 years, 2 months ago) by persson
File size: 23051 byte(s)
* sf2 engine: fine-tuned amplitude EG (by switching from gig to sfz EG)
* sfz engine: added support for EG hold (ampeg_hold)
* Mac OS X: made it possible to specify plugin installation dir to
  configure

1 iliev 2012 /***************************************************************************
2     * *
3     * LinuxSampler - modular, streaming capable sampler *
4     * *
5     * Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck *
6 persson 2055 * Copyright (C) 2005 - 2008 Christian Schoenebeck *
7 persson 2175 * Copyright (C) 2009 - 2011 Christian Schoenebeck and Grigor Iliev *
8 iliev 2012 * *
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 iliev 2015 #include "Voice.h"
26    
27 iliev 2012 #include "Engine.h"
28     #include "EngineChannel.h"
29    
30 persson 2072 #define LN_10_DIV_20 0.115129254649702
31    
32 iliev 2012 namespace LinuxSampler { namespace sfz {
33    
34     Voice::Voice() {
35     pEngine = NULL;
36     }
37    
38     Voice::~Voice() {
39 iliev 2015
40 iliev 2012 }
41    
42 iliev 2015 EngineChannel* Voice::GetSfzEngineChannel() {
43     return static_cast<EngineChannel*>(pEngineChannel);
44     }
45    
46 iliev 2012 void Voice::SetEngine(LinuxSampler::Engine* pEngine) {
47     Engine* engine = static_cast<Engine*>(pEngine);
48     this->pEngine = engine;
49     this->pDiskThread = engine->pDiskThread;
50     dmsg(6,("Voice::SetEngine()\n"));
51     }
52    
53 iliev 2015 Voice::SampleInfo Voice::GetSampleInfo() {
54     SampleInfo si;
55     si.SampleRate = pSample->GetSampleRate();
56     si.ChannelCount = pSample->GetChannelCount();
57     si.FrameSize = pSample->GetFrameSize();
58     si.BitDepth = (pSample->GetFrameSize() / pSample->GetChannelCount()) * 8;
59     si.TotalFrameCount = pSample->GetTotalFrameCount();
60 iliev 2012
61 iliev 2021 si.HasLoops = pRegion->HasLoop();
62     si.LoopStart = pRegion->GetLoopStart();
63     si.LoopLength = pRegion->GetLoopEnd() - pRegion->GetLoopStart();
64     si.LoopPlayCount = pRegion->GetLoopCount();
65     si.Unpitched = pRegion->pitch_keytrack == 0;
66 iliev 2015 return si;
67     }
68 iliev 2012
69 iliev 2015 Voice::RegionInfo Voice::GetRegionInfo() {
70     RegionInfo ri;
71 iliev 2018 ri.UnityNote = pRegion->pitch_keycenter;
72 persson 2086 ri.FineTune = pRegion->tune + pRegion->transpose * 100;
73 persson 2045 ri.Pan = int(pRegion->pan * 0.63); // convert from -100..100 to -64..63
74 iliev 2018 ri.SampleStartOffset = 0; // TODO:
75 iliev 2012
76 persson 2055 ri.EG2PreAttack = pRegion->fileg_start * 10;
77 iliev 2018 ri.EG2Attack = pRegion->fileg_attack;
78     //ri.EG2Hold = pRegion->fileg_hold; // TODO:
79     ri.EG2Decay1 = pRegion->fileg_decay;
80     ri.EG2Decay2 = pRegion->fileg_decay;
81 persson 2055 ri.EG2Sustain = pRegion->fileg_sustain * 10;
82 iliev 2015 ri.EG2InfiniteSustain = true;
83 iliev 2018 ri.EG2Release = pRegion->fileg_release;
84 iliev 2012
85 iliev 2018 ri.EG3Attack = pRegion->pitcheg_attack;
86 iliev 2015 ri.EG3Depth = 0; // TODO:
87 persson 2175 ri.VCFEnabled = pRegion->cutoff;
88     switch (pRegion->fil_type) {
89     case ::sfz::LPF_1P:
90     ri.VCFType = Filter::vcf_type_1p_lowpass;
91     break;
92     case ::sfz::LPF_2P:
93     ri.VCFType = Filter::vcf_type_2p_lowpass;
94     break;
95     case ::sfz::LPF_4P:
96     ri.VCFType = Filter::vcf_type_4p_lowpass;
97     break;
98     case ::sfz::LPF_6P:
99     ri.VCFType = Filter::vcf_type_6p_lowpass;
100     break;
101     case ::sfz::HPF_1P:
102     ri.VCFType = Filter::vcf_type_1p_highpass;
103     break;
104     case ::sfz::HPF_2P:
105     ri.VCFType = Filter::vcf_type_2p_highpass;
106     break;
107     case ::sfz::HPF_4P:
108     ri.VCFType = Filter::vcf_type_4p_highpass;
109     break;
110     case ::sfz::HPF_6P:
111     ri.VCFType = Filter::vcf_type_6p_highpass;
112     break;
113     case ::sfz::BPF_1P:
114     case ::sfz::BPF_2P:
115     ri.VCFType = Filter::vcf_type_2p_bandpass;
116     break;
117     case ::sfz::BRF_1P:
118     case ::sfz::BRF_2P:
119     ri.VCFType = Filter::vcf_type_2p_bandreject;
120     break;
121     case ::sfz::APF_1P:
122     case ::sfz::PKF_2P:
123     default:
124     ri.VCFEnabled = false;
125     break;
126     }
127 iliev 2012
128 persson 2175 ri.VCFResonance = pRegion->resonance;
129    
130 persson 2061 // rt_decay is in dB. Precalculate a suitable value for exp in
131     // GetReleaseTriggerAttenuation: -ln(10) / 20 * rt_decay
132 persson 2072 ri.ReleaseTriggerDecay = -LN_10_DIV_20 * pRegion->rt_decay;
133 iliev 2012
134 iliev 2015 return ri;
135     }
136 iliev 2012
137 iliev 2015 Voice::InstrumentInfo Voice::GetInstrumentInfo() {
138     InstrumentInfo ii;
139     ii.FineTune = 0; // TODO:
140     ii.PitchbendRange = 2; // TODO:
141    
142     return ii;
143     }
144    
145     double Voice::GetSampleAttenuation() {
146 persson 2072 return exp(LN_10_DIV_20 * pRegion->volume);
147 iliev 2015 }
148    
149     double Voice::GetVelocityAttenuation(uint8_t MIDIKeyVelocity) {
150 persson 2082 return pRegion->amp_velcurve[MIDIKeyVelocity];
151 iliev 2015 }
152    
153     double Voice::GetVelocityRelease(uint8_t MIDIKeyVelocity) {
154 persson 2176 return 127.0 / MIDIKeyVelocity;
155 iliev 2015 }
156    
157     void Voice::ProcessCCEvent(RTList<Event>::Iterator& itEvent) {
158     /*if (itEvent->Type == Event::type_control_change && itEvent->Param.CC.Controller) { // if (valid) MIDI control change event
159     if (pRegion->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&
160     itEvent->Param.CC.Controller == pRegion->AttenuationController.controller_number) {
161     CrossfadeSmoother.update(AbstractEngine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.CC.Value)]);
162     }
163     }*/ // TODO: ^^^
164     }
165    
166     void Voice::ProcessCutoffEvent(RTList<Event>::Iterator& itEvent) {
167 persson 2175 int ccvalue = itEvent->Param.CC.Value;
168 iliev 2015 if (VCFCutoffCtrl.value == ccvalue) return;
169 persson 2175 VCFCutoffCtrl.value = ccvalue;
170 iliev 2015
171 persson 2175 float cutoff = CutoffBase * RTMath::CentsToFreqRatioUnlimited(
172     ccvalue / 127.0f * pRegion->cutoff_oncc[VCFCutoffCtrl.controller]);
173     if (cutoff > 0.49 * pEngine->SampleRate) cutoff = 0.49 * pEngine->SampleRate;
174    
175 iliev 2015 VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of fFinalCutoff next time
176 persson 2175 fFinalCutoff = cutoff;
177 iliev 2015 }
178    
179     double Voice::CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity) {
180 iliev 2012 /*float crossfadeVolume;
181     switch (pRegion->AttenuationController.type) {
182     case ::gig::attenuation_ctrl_t::type_channelaftertouch:
183 iliev 2015 crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetSfzEngineChannel()->ControllerTable[128])];
184 iliev 2012 break;
185     case ::gig::attenuation_ctrl_t::type_velocity:
186 iliev 2015 crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(MIDIKeyVelocity)];
187 iliev 2012 break;
188     case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate
189 iliev 2015 crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetSfzEngineChannel()->ControllerTable[pRegion->AttenuationController.controller_number])];
190 iliev 2012 break;
191     case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined
192     default:
193     crossfadeVolume = 1.0f;
194     }
195    
196 iliev 2015 return crossfadeVolume;*/ // TODO: ^^^
197     return 1.0f;
198     }
199 iliev 2012
200 iliev 2015 double Voice::GetEG1ControllerValue(uint8_t MIDIKeyVelocity) {
201     /*double eg1controllervalue = 0;
202     switch (pRegion->EG1Controller.type) {
203     case ::gig::eg1_ctrl_t::type_none: // no controller defined
204     eg1controllervalue = 0;
205     break;
206     case ::gig::eg1_ctrl_t::type_channelaftertouch:
207     eg1controllervalue = GetSfzEngineChannel()->ControllerTable[128];
208     break;
209     case ::gig::eg1_ctrl_t::type_velocity:
210     eg1controllervalue = MIDIKeyVelocity;
211     break;
212     case ::gig::eg1_ctrl_t::type_controlchange: // MIDI control change controller
213     eg1controllervalue = GetSfzEngineChannel()->ControllerTable[pRegion->EG1Controller.controller_number];
214     break;
215 iliev 2012 }
216 iliev 2015 if (pRegion->EG1ControllerInvert) eg1controllervalue = 127 - eg1controllervalue;
217 iliev 2012
218 iliev 2015 return eg1controllervalue;*/ // TODO: ^^^
219     return 0;
220     }
221 iliev 2012
222 iliev 2015 Voice::EGInfo Voice::CalculateEG1ControllerInfluence(double eg1ControllerValue) {
223     /*EGInfo eg;
224     // (eg1attack is different from the others)
225     eg.Attack = (pRegion->EG1ControllerAttackInfluence) ?
226     1 + 0.031 * (double) (pRegion->EG1ControllerAttackInfluence == 1 ?
227     1 : 1 << pRegion->EG1ControllerAttackInfluence) * eg1ControllerValue : 1.0;
228     eg.Decay = (pRegion->EG1ControllerDecayInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerDecayInfluence) * eg1ControllerValue : 1.0;
229     eg.Release = (pRegion->EG1ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerReleaseInfluence) * eg1ControllerValue : 1.0;
230 iliev 2012
231 iliev 2015 return eg;*/ // TODO: ^^^
232     EGInfo eg;
233     eg.Attack = 1.0;
234     eg.Decay = 1.0;
235     eg.Release = 1.0;
236     return eg;
237     }
238 iliev 2012
239 persson 2055 void Voice::TriggerEG1(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
240    
241     // TODO: controller modulation
242    
243     // first check if there is a v2 EG for amplitude
244     for (int i = 0 ; i < pRegion->eg.size() ; i++) {
245     if (pRegion->eg[i].amplitude > 0) {
246     // TODO: actually use the value of the amplitude parameter
247     pEG1 = &EG1;
248     EG1.trigger(pRegion->eg[i], sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE, velocity);
249     return;
250     }
251     }
252    
253     // otherwise use the v1 EGADSR
254     pEG1 = &EGADSR1;
255 persson 2203 EGADSR1.trigger(uint(pRegion->ampeg_start * 10),
256     std::max(0.0, pRegion->ampeg_attack + pRegion->ampeg_vel2attack * velrelease),
257     std::max(0.0, pRegion->ampeg_hold + pRegion->ampeg_vel2hold * velrelease),
258     std::max(0.0, pRegion->ampeg_decay + pRegion->ampeg_vel2decay * velrelease),
259     uint(std::min(std::max(0.0, 10 * (pRegion->ampeg_sustain + pRegion->ampeg_vel2sustain * velrelease)), 1000.0)),
260     std::max(0.0, pRegion->ampeg_release + pRegion->ampeg_vel2release * velrelease),
261 persson 2055 sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
262 persson 2176 }
263 persson 2055
264 persson 2176 double Voice::GetEG2ControllerValue(uint8_t MIDIKeyVelocity) {
265 iliev 2015 /*double eg2controllervalue = 0;
266     switch (pRegion->EG2Controller.type) {
267     case ::gig::eg2_ctrl_t::type_none: // no controller defined
268     eg2controllervalue = 0;
269     break;
270     case ::gig::eg2_ctrl_t::type_channelaftertouch:
271     eg2controllervalue = GetSfzEngineChannel()->ControllerTable[128];
272     break;
273     case ::gig::eg2_ctrl_t::type_velocity:
274     eg2controllervalue = MIDIKeyVelocity;
275     break;
276     case ::gig::eg2_ctrl_t::type_controlchange: // MIDI control change controller
277     eg2controllervalue = GetSfzEngineChannel()->ControllerTable[pRegion->EG2Controller.controller_number];
278     break;
279 iliev 2012 }
280 iliev 2015 if (pRegion->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue;
281 iliev 2012
282 iliev 2015 return eg2controllervalue;*/ // TODO: ^^^
283     return 0;
284     }
285 iliev 2012
286 iliev 2015 Voice::EGInfo Voice::CalculateEG2ControllerInfluence(double eg2ControllerValue) {
287     /*EGInfo eg;
288     eg.Attack = (pRegion->EG2ControllerAttackInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerAttackInfluence) * eg2ControllerValue : 1.0;
289     eg.Decay = (pRegion->EG2ControllerDecayInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerDecayInfluence) * eg2ControllerValue : 1.0;
290     eg.Release = (pRegion->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerReleaseInfluence) * eg2ControllerValue : 1.0;
291 iliev 2012
292 iliev 2015 return eg;*/ // TODO: ^^^
293     EGInfo eg;
294     eg.Attack = 1.0;
295     eg.Decay = 1.0;
296     eg.Release = 1.0;
297     return eg;
298     }
299 iliev 2012
300 persson 2175 void Voice::TriggerEG2(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
301    
302     // TODO: the sfz filter EG should modulate cents, not hertz,
303     // so we can't use the EG or EGADSR as it is. Disable for now.
304    
305     pEG2 = &EGADSR2;
306     EGADSR2.trigger(0,
307     0,
308     false,
309     0,
310     1000,
311     0,
312     sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
313     }
314    
315 iliev 2015 void Voice::InitLFO1() {
316     /*uint16_t lfo1_internal_depth;
317     switch (pRegion->LFO1Controller) {
318     case ::gig::lfo1_ctrl_internal:
319     lfo1_internal_depth = pRegion->LFO1InternalDepth;
320     pLFO1->ExtController = 0; // no external controller
321     bLFO1Enabled = (lfo1_internal_depth > 0);
322     break;
323     case ::gig::lfo1_ctrl_modwheel:
324     lfo1_internal_depth = 0;
325     pLFO1->ExtController = 1; // MIDI controller 1
326     bLFO1Enabled = (pRegion->LFO1ControlDepth > 0);
327     break;
328     case ::gig::lfo1_ctrl_breath:
329     lfo1_internal_depth = 0;
330     pLFO1->ExtController = 2; // MIDI controller 2
331     bLFO1Enabled = (pRegion->LFO1ControlDepth > 0);
332     break;
333     case ::gig::lfo1_ctrl_internal_modwheel:
334     lfo1_internal_depth = pRegion->LFO1InternalDepth;
335     pLFO1->ExtController = 1; // MIDI controller 1
336     bLFO1Enabled = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
337     break;
338     case ::gig::lfo1_ctrl_internal_breath:
339     lfo1_internal_depth = pRegion->LFO1InternalDepth;
340     pLFO1->ExtController = 2; // MIDI controller 2
341     bLFO1Enabled = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
342     break;
343     default:
344     lfo1_internal_depth = 0;
345     pLFO1->ExtController = 0; // no external controller
346     bLFO1Enabled = false;
347 iliev 2012 }
348 iliev 2015 if (bLFO1Enabled) {
349     pLFO1->trigger(pRegion->LFO1Frequency,
350     start_level_min,
351     lfo1_internal_depth,
352     pRegion->LFO1ControlDepth,
353     pRegion->LFO1FlipPhase,
354     pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
355     pLFO1->update(pLFO1->ExtController ? GetSfzEngineChannel()->ControllerTable[pLFO1->ExtController] : 0);
356 iliev 2012 }*/ // TODO: ^^^
357 iliev 2015 bLFO1Enabled = false;
358     }
359 iliev 2012
360 iliev 2015 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 iliev 2012 }
393 iliev 2015 if (bLFO2Enabled) {
394     pLFO2->trigger(pRegion->LFO2Frequency,
395     start_level_max,
396     lfo2_internal_depth,
397     pRegion->LFO2ControlDepth,
398     pRegion->LFO2FlipPhase,
399     pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
400     pLFO2->update(pLFO2->ExtController ? GetSfzEngineChannel()->ControllerTable[pLFO2->ExtController] : 0);
401 iliev 2012 }*/ // TODO: ^^^
402 iliev 2015 bLFO2Enabled = false;
403 iliev 2012 }
404    
405 iliev 2015 void Voice::InitLFO3() {
406     /*uint16_t lfo3_internal_depth;
407     switch (pRegion->LFO3Controller) {
408     case ::gig::lfo3_ctrl_internal:
409     lfo3_internal_depth = pRegion->LFO3InternalDepth;
410     pLFO3->ExtController = 0; // no external controller
411     bLFO3Enabled = (lfo3_internal_depth > 0);
412 iliev 2012 break;
413 iliev 2015 case ::gig::lfo3_ctrl_modwheel:
414     lfo3_internal_depth = 0;
415     pLFO3->ExtController = 1; // MIDI controller 1
416     bLFO3Enabled = (pRegion->LFO3ControlDepth > 0);
417 iliev 2012 break;
418 iliev 2015 case ::gig::lfo3_ctrl_aftertouch:
419     lfo3_internal_depth = 0;
420     pLFO3->ExtController = 128;
421     bLFO3Enabled = true;
422 iliev 2012 break;
423 iliev 2015 case ::gig::lfo3_ctrl_internal_modwheel:
424     lfo3_internal_depth = pRegion->LFO3InternalDepth;
425     pLFO3->ExtController = 1; // MIDI controller 1
426     bLFO3Enabled = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
427     break;
428     case ::gig::lfo3_ctrl_internal_aftertouch:
429     lfo3_internal_depth = pRegion->LFO3InternalDepth;
430     pLFO1->ExtController = 128;
431     bLFO3Enabled = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
432     break;
433     default:
434     lfo3_internal_depth = 0;
435     pLFO3->ExtController = 0; // no external controller
436     bLFO3Enabled = false;
437 iliev 2012 }
438 iliev 2015 if (bLFO3Enabled) {
439     pLFO3->trigger(pRegion->LFO3Frequency,
440     start_level_mid,
441     lfo3_internal_depth,
442     pRegion->LFO3ControlDepth,
443     false,
444     pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
445     pLFO3->update(pLFO3->ExtController ? GetSfzEngineChannel()->ControllerTable[pLFO3->ExtController] : 0);
446     }*/ // TODO: ^^^
447     bLFO3Enabled = false;
448 iliev 2012 }
449    
450 iliev 2015 float Voice::CalculateCutoffBase(uint8_t MIDIKeyVelocity) {
451 persson 2175 float cutoff = *pRegion->cutoff;
452     cutoff *= RTMath::CentsToFreqRatioUnlimited(
453     MIDIKeyVelocity / 127.0f * pRegion->fil_veltrack +
454     (MIDIKey - pRegion->fil_keycenter) * pRegion->fil_keytrack);
455     return cutoff;
456 iliev 2012 }
457    
458 iliev 2015 float Voice::CalculateFinalCutoff(float cutoffBase) {
459 persson 2175 float cutoff;
460 iliev 2015 if (VCFCutoffCtrl.controller) {
461 persson 2175 int ccvalue = GetSfzEngineChannel()->ControllerTable[VCFCutoffCtrl.controller];
462     cutoff = CutoffBase * RTMath::CentsToFreqRatioUnlimited(
463     ccvalue / 127.0f * pRegion->cutoff_oncc[VCFCutoffCtrl.controller]);
464     } else {
465     cutoff = cutoffBase;
466 iliev 2012 }
467 persson 2175 if (cutoff > 0.49 * pEngine->SampleRate) cutoff = 0.49 * pEngine->SampleRate;
468     return cutoff;
469 iliev 2012 }
470    
471 iliev 2015 uint8_t Voice::GetVCFCutoffCtrl() {
472 persson 2175 // TODO: the sfz format allows several CC for the same
473     // modulation destination. The Voice interface needs to be
474     // changed to support that.
475     if (pRegion->cutoff_cc) return pRegion->cutoff_cc;
476     else if (pRegion->cutoff_chanaft) return 128;
477 iliev 2015 return 0;
478 iliev 2012 }
479    
480 iliev 2015 uint8_t Voice::GetVCFResonanceCtrl() {
481     /*uint8_t ctrl;
482     switch (pRegion->VCFResonanceController) {
483     case ::gig::vcf_res_ctrl_genpurpose3:
484     ctrl = 18;
485     break;
486     case ::gig::vcf_res_ctrl_genpurpose4:
487     ctrl = 19;
488     break;
489     case ::gig::vcf_res_ctrl_genpurpose5:
490     ctrl = 80;
491     break;
492     case ::gig::vcf_res_ctrl_genpurpose6:
493     ctrl = 81;
494     break;
495     case ::gig::vcf_res_ctrl_none:
496     default:
497     ctrl = 0;
498 iliev 2012 }
499    
500 iliev 2015 return ctrl;*/ // TODO: ^^^
501     return 0;
502 iliev 2012 }
503    
504 persson 2061 float Voice::GetReleaseTriggerAttenuation(float noteLength) {
505     // pow(10, -rt_decay * noteLength / 20):
506     return expf(RgnInfo.ReleaseTriggerDecay * noteLength);
507     }
508    
509 persson 2114 void Voice::ProcessGroupEvent(RTList<Event>::Iterator& itEvent) {
510     dmsg(4,("Voice %x processGroupEvents event type=%d", this, itEvent->Type));
511 persson 2115 if (itEvent->Type == Event::type_control_change ||
512     (Type & Voice::type_controller_triggered) ||
513     itEvent->Param.Note.Key != MIDIKey) {
514 persson 2114 dmsg(4,("Voice %x - kill", this));
515     if (pRegion->off_mode == ::sfz::OFF_NORMAL) {
516     // turn off the voice by entering release envelope stage
517     EnterReleaseStage();
518     } else {
519     // kill the voice fast
520     pEG1->enterFadeOutStage();
521     }
522     }
523     }
524    
525 iliev 2012 }} // namespace LinuxSampler::sfz

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