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

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revision 3360 by schoenebeck, Fri Oct 27 21:19:18 2017 UTC revision 3655 by schoenebeck, Fri Dec 13 17:14:48 2019 UTC
# Line 33  Line 33 
33    
34  namespace LinuxSampler { namespace gig {  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() {      Voice::Voice() {
64          pEngine = NULL;          pEngine = NULL;
65          pEG1 = &EG1;          pEG1 = &EG1;
# Line 137  namespace LinuxSampler { namespace gig { Line 164  namespace LinuxSampler { namespace gig {
164          // Not used so far          // 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) {      void Voice::ProcessCutoffEvent(RTList<Event>::Iterator& itEvent) {
179          int ccvalue = itEvent->Param.CC.Value;          if (VCFCutoffCtrl.value == itEvent->Param.CC.Value) return;
180          if (VCFCutoffCtrl.value == ccvalue) return;          float ccvalue = VCFCutoffCtrl.value = itEvent->Param.CC.Value;
181          VCFCutoffCtrl.value = ccvalue;  
182          if (pRegion->VCFCutoffControllerInvert)  ccvalue = 127 - ccvalue;          // if the selected filter type is an official GigaStudio filter type
183          if (ccvalue < pRegion->VCFVelocityScale) ccvalue = pRegion->VCFVelocityScale;          // then we preserve the original (no matter how odd) historical GSt
184          float cutoff = CutoffBase * float(ccvalue);          // 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;          if (cutoff > 127.0f) cutoff = 127.0f;
205    
206          VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of fFinalCutoff next time          // the filter implementations of the original GSt filter types take an
207          fFinalCutoff = cutoff;          // 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) {      double Voice::CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity) {
# Line 273  namespace LinuxSampler { namespace gig { Line 340  namespace LinuxSampler { namespace gig {
340                  bLFO1Enabled         = false;                  bLFO1Enabled         = false;
341          }          }
342          if (bLFO1Enabled) {          if (bLFO1Enabled) {
343              pLFO1->trigger(pRegion->LFO1Frequency,              pLFO1->trigger(fromGigLfoWave(pRegion->LFO1WaveForm),
344                             start_level_min,                             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,                             lfo1_internal_depth,
348                             pRegion->LFO1ControlDepth,                             pRegion->LFO1ControlDepth,
349                             pRegion->LFO1FlipPhase,                             pRegion->LFO1FlipPhase,
350                             pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);                             pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
351              pLFO1->updateByMIDICtrlValue(pLFO1->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO1->ExtController] : 0);              pLFO1->updateByMIDICtrlValue(pLFO1->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO1->ExtController] : 0);
352              pLFO1->setScriptDepthFactor(pNote->Override.AmpLFODepth);              pLFO1->setScriptDepthFactor(
353              pLFO1->setScriptFrequencyFactor(pNote->Override.AmpLFOFreq, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);                  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    
# Line 319  namespace LinuxSampler { namespace gig { Line 398  namespace LinuxSampler { namespace gig {
398                  bLFO2Enabled         = false;                  bLFO2Enabled         = false;
399          }          }
400          if (bLFO2Enabled) {          if (bLFO2Enabled) {
401              pLFO2->trigger(pRegion->LFO2Frequency,              pLFO2->trigger(fromGigLfoWave(pRegion->LFO2WaveForm),
402                             start_level_max,                             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,                             lfo2_internal_depth,
406                             pRegion->LFO2ControlDepth,                             pRegion->LFO2ControlDepth,
407                             pRegion->LFO2FlipPhase,                             pRegion->LFO2FlipPhase,
408                             pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);                             pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
409              pLFO2->updateByMIDICtrlValue(pLFO2->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO2->ExtController] : 0);              pLFO2->updateByMIDICtrlValue(pLFO2->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO2->ExtController] : 0);
410              pLFO2->setScriptDepthFactor(pNote->Override.CutoffLFODepth);              pLFO2->setScriptDepthFactor(
411              pLFO2->setScriptFrequencyFactor(pNote->Override.CutoffLFOFreq, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);                  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    
# Line 365  namespace LinuxSampler { namespace gig { Line 452  namespace LinuxSampler { namespace gig {
452                  bLFO3Enabled         = false;                  bLFO3Enabled         = false;
453          }          }
454          if (bLFO3Enabled) {          if (bLFO3Enabled) {
455              pLFO3->trigger(pRegion->LFO3Frequency,              pLFO3->trigger(fromGigLfoWave(pRegion->LFO3WaveForm),
456                             start_level_mid,                             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,                             lfo3_internal_depth,
460                             pRegion->LFO3ControlDepth,                             pRegion->LFO3ControlDepth,
461                             false,                             pRegion->LFO3FlipPhase,
462                             pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);                             pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
463              pLFO3->updateByMIDICtrlValue(pLFO3->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO3->ExtController] : 0);              pLFO3->updateByMIDICtrlValue(pLFO3->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO3->ExtController] : 0);
464              pLFO3->setScriptDepthFactor(pNote->Override.PitchLFODepth);              pLFO3->setScriptDepthFactor(
465              pLFO3->setScriptFrequencyFactor(pNote->Override.PitchLFOFreq, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);                  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    
# Line 385  namespace LinuxSampler { namespace gig { Line 480  namespace LinuxSampler { namespace gig {
480          return cutoff;          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) {      float Voice::CalculateFinalCutoff(float cutoffBase) {
486          int cvalue;          // 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) {          if (VCFCutoffCtrl.controller) {
495              cvalue = GetGigEngineChannel()->ControllerTable[VCFCutoffCtrl.controller];              cvalue = GetGigEngineChannel()->ControllerTable[VCFCutoffCtrl.controller];
496              if (pRegion->VCFCutoffControllerInvert) cvalue = 127 - cvalue;              if (pRegion->VCFCutoffControllerInvert) cvalue = 127 - cvalue;
497              // VCFVelocityScale in this case means Minimum cutoff              if (isGStFilter) {
498              if (cvalue < pRegion->VCFVelocityScale) cvalue = pRegion->VCFVelocityScale;                  // VCFVelocityScale in this case means "minimum cutoff" for GSt
499          }                  if (cvalue < MinCutoff()) cvalue = MinCutoff();
500          else {              } 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;              cvalue = pRegion->VCFCutoff;
515          }          }
516          float fco = cutoffBase * float(cvalue);  
517            float fco = cutoffBase * cvalue;
518          if (fco > 127.0f) fco = 127.0f;          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;          return fco;
532      }      }
533    
# Line 476  namespace LinuxSampler { namespace gig { Line 605  namespace LinuxSampler { namespace gig {
605              pRegion->EG1Options.ReleaseCancel              pRegion->EG1Options.ReleaseCancel
606          );          );
607          EG1.trigger(pRegion->EG1PreAttack,          EG1.trigger(pRegion->EG1PreAttack,
608                      RTMath::Max(pRegion->EG1Attack, 0.0316) * egInfo.Attack,                      (pNote && pNote->Override.Attack.isFinal()) ?
609                            pNote->Override.Attack.Value :
610                            RTMath::Max(pRegion->EG1Attack, 0.0316) * egInfo.Attack,
611                      pRegion->EG1Hold,                      pRegion->EG1Hold,
612                      pRegion->EG1Decay1 * egInfo.Decay * velrelease,                      (pNote && pNote->Override.Decay.isFinal()) ?
613                      pRegion->EG1Decay2 * egInfo.Decay * velrelease,                          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,                      pRegion->EG1InfiniteSustain,
619                      pRegion->EG1Sustain * (pNote ? pNote->Override.Sustain : 1.f),                      (pNote && pNote->Override.Sustain.Final) ?
620                      RTMath::Max(pRegion->EG1Release * velrelease, 0.014) * egInfo.Release,                          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,                      velocityAttenuation,
626                      sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);                      sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
627      }      }
# Line 496  namespace LinuxSampler { namespace gig { Line 635  namespace LinuxSampler { namespace gig {
635              pRegion->EG2Options.ReleaseCancel              pRegion->EG2Options.ReleaseCancel
636          );          );
637          EG2.trigger(uint(RgnInfo.EG2PreAttack),          EG2.trigger(uint(RgnInfo.EG2PreAttack),
638                      RgnInfo.EG2Attack * egInfo.Attack,                      (pNote && pNote->Override.CutoffAttack.isFinal()) ?
639                            pNote->Override.CutoffAttack.Value :
640                            RgnInfo.EG2Attack * egInfo.Attack,
641                      false,                      false,
642                      RgnInfo.EG2Decay1 * egInfo.Decay * velrelease,                      (pNote && pNote->Override.CutoffDecay.isFinal()) ?
643                      RgnInfo.EG2Decay2 * egInfo.Decay * velrelease,                          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,                      RgnInfo.EG2InfiniteSustain,
649                      uint(RgnInfo.EG2Sustain),                      (pNote && pNote->Override.CutoffSustain.Final) ?
650                      RgnInfo.EG2Release * egInfo.Release * velrelease,                          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,                      velocityAttenuation,
656                      sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);                      sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
657      }      }
# Line 544  namespace LinuxSampler { namespace gig { Line 693  namespace LinuxSampler { namespace gig {
693          return p;          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  }} // namespace LinuxSampler::gig
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