/[svn]/linuxsampler/trunk/src/engines/gig/Voice.cpp
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revision 322 by senkov, Mon Dec 13 03:33:59 2004 UTC revision 2382 by persson, Sun Dec 2 16:30:42 2012 UTC
# Line 3  Line 3 
3   *   LinuxSampler - modular, streaming capable sampler                     *   *   LinuxSampler - modular, streaming capable sampler                     *
4   *                                                                         *   *                                                                         *
5   *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *   *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *
6     *   Copyright (C) 2005 - 2008 Christian Schoenebeck                       *
7     *   Copyright (C) 2009 - 2012 Christian Schoenebeck and Grigor Iliev      *
8   *                                                                         *   *                                                                         *
9   *   This program is free software; you can redistribute it and/or modify  *   *   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  *   *   it under the terms of the GNU General Public License as published by  *
# Line 20  Line 22 
22   *   MA  02111-1307  USA                                                   *   *   MA  02111-1307  USA                                                   *
23   ***************************************************************************/   ***************************************************************************/
24    
 #include "EGADSR.h"  
 #include "Manipulator.h"  
25  #include "../../common/Features.h"  #include "../../common/Features.h"
26  #include "Synthesizer.h"  #include "Synthesizer.h"
27    #include "Profiler.h"
28    #include "Engine.h"
29    #include "EngineChannel.h"
30    
31  #include "Voice.h"  #include "Voice.h"
32    
33  namespace LinuxSampler { namespace gig {  namespace LinuxSampler { namespace gig {
34    
35      const float Voice::FILTER_CUTOFF_COEFF(CalculateFilterCutoffCoeff());      Voice::Voice() {
36            pEngine = NULL;
37            pEG1 = &EG1;
38            pEG2 = &EG2;
39        }
40    
41      const int Voice::FILTER_UPDATE_MASK(CalculateFilterUpdateMask());      Voice::~Voice() {
42        }
43    
44      float Voice::CalculateFilterCutoffCoeff() {      EngineChannel* Voice::GetGigEngineChannel() {
45          return log(FILTER_CUTOFF_MIN / FILTER_CUTOFF_MAX);          return static_cast<EngineChannel*>(pEngineChannel);
46      }      }
47    
48      int Voice::CalculateFilterUpdateMask() {      void Voice::SetEngine(LinuxSampler::Engine* pEngine) {
49          if (FILTER_UPDATE_PERIOD <= 0) return 0;          Engine* engine = static_cast<Engine*>(pEngine);
50          int power_of_two;          this->pEngine     = engine;
51          for (power_of_two = 0; 1<<power_of_two < FILTER_UPDATE_PERIOD; power_of_two++);          this->pDiskThread = engine->pDiskThread;
52          return (1 << power_of_two) - 1;          dmsg(6,("Voice::SetEngine()\n"));
53      }      }
54    
55      Voice::Voice() {      Voice::SampleInfo Voice::GetSampleInfo() {
56          pEngine     = NULL;          SampleInfo si;
57          pDiskThread = NULL;          si.SampleRate       = pSample->SamplesPerSecond;
58          PlaybackState = playback_state_end;          si.ChannelCount     = pSample->Channels;
59          pEG1   = NULL;          si.FrameSize        = pSample->FrameSize;
60          pEG2   = NULL;          si.BitDepth         = pSample->BitDepth;
61          pEG3   = NULL;          si.TotalFrameCount  = pSample->SamplesTotal;
62          pVCAManipulator  = NULL;  
63          pVCFCManipulator = NULL;          si.HasLoops       = pRegion->SampleLoops;
64          pVCOManipulator  = NULL;          si.LoopStart      = (si.HasLoops) ? pRegion->pSampleLoops[0].LoopStart  : 0;
65          pLFO1  = NULL;          si.LoopLength     = (si.HasLoops) ? pRegion->pSampleLoops[0].LoopLength : 0;
66          pLFO2  = NULL;          si.LoopPlayCount  = pSample->LoopPlayCount;
67          pLFO3  = NULL;          si.Unpitched      = !pRegion->PitchTrack;
         KeyGroup = 0;  
68    
69          // select synthesis implementation (currently either pure C++ or MMX+SSE(1))          return si;
         SYNTHESIS_MODE_SET_IMPLEMENTATION(SynthesisMode, Features::supportsMMX() && Features::supportsSSE());  
70      }      }
71    
72      Voice::~Voice() {      Voice::RegionInfo Voice::GetRegionInfo() {
73          if (pEG1)  delete pEG1;          RegionInfo ri;
74          if (pEG2)  delete pEG2;          ri.UnityNote = pRegion->UnityNote;
75          if (pEG3)  delete pEG3;          ri.FineTune  = pRegion->FineTune;
76          if (pLFO1) delete pLFO1;          ri.Pan       = pRegion->Pan;
77          if (pLFO2) delete pLFO2;          ri.SampleStartOffset = pRegion->SampleStartOffset;
         if (pLFO3) delete pLFO3;  
         if (pVCAManipulator)  delete pVCAManipulator;  
         if (pVCFCManipulator) delete pVCFCManipulator;  
         if (pVCOManipulator)  delete pVCOManipulator;  
     }  
   
     void Voice::SetEngine(Engine* pEngine) {  
         this->pEngine = pEngine;  
   
         // delete old objects  
         if (pEG1) delete pEG1;  
         if (pEG2) delete pEG2;  
         if (pEG3) delete pEG3;  
         if (pVCAManipulator)  delete pVCAManipulator;  
         if (pVCFCManipulator) delete pVCFCManipulator;  
         if (pVCOManipulator)  delete pVCOManipulator;  
         if (pLFO1) delete pLFO1;  
         if (pLFO2) delete pLFO2;  
         if (pLFO3) delete pLFO3;  
   
         // create new ones  
         pEG1   = new EGADSR(pEngine, Event::destination_vca);  
         pEG2   = new EGADSR(pEngine, Event::destination_vcfc);  
         pEG3   = new EGDecay(pEngine, Event::destination_vco);  
         pVCAManipulator  = new VCAManipulator(pEngine);  
         pVCFCManipulator = new VCFCManipulator(pEngine);  
         pVCOManipulator  = new VCOManipulator(pEngine);  
         pLFO1  = new LFO<gig::VCAManipulator>(0.0f, 1.0f, LFO<VCAManipulator>::propagation_top_down, pVCAManipulator, pEngine->pEventPool);  
         pLFO2  = new LFO<gig::VCFCManipulator>(0.0f, 1.0f, LFO<VCFCManipulator>::propagation_top_down, pVCFCManipulator, pEngine->pEventPool);  
         pLFO3  = new LFO<gig::VCOManipulator>(-1200.0f, 1200.0f, LFO<VCOManipulator>::propagation_middle_balanced, pVCOManipulator, pEngine->pEventPool); // +-1 octave (+-1200 cents) max.  
78    
79          this->pDiskThread = pEngine->pDiskThread;          ri.EG2PreAttack        = pRegion->EG2PreAttack;
80          dmsg(6,("Voice::SetEngine()\n"));          ri.EG2Attack           = pRegion->EG2Attack;
81            ri.EG2Decay1           = pRegion->EG2Decay1;
82            ri.EG2Decay2           = pRegion->EG2Decay2;
83            ri.EG2Sustain          = pRegion->EG2Sustain;
84            ri.EG2InfiniteSustain  = pRegion->EG2InfiniteSustain;
85            ri.EG2Release          = pRegion->EG2Release;
86    
87            ri.EG3Attack     = pRegion->EG3Attack;
88            ri.EG3Depth      = pRegion->EG3Depth;
89            ri.VCFEnabled    = pRegion->VCFEnabled;
90            ri.VCFType       = Filter::vcf_type_t(pRegion->VCFType);
91            ri.VCFResonance  = pRegion->VCFResonance;
92    
93            ri.ReleaseTriggerDecay = 0.01053 * (256 >> pRegion->ReleaseTriggerDecay);
94    
95            return ri;
96        }
97    
98        Voice::InstrumentInfo Voice::GetInstrumentInfo() {
99            InstrumentInfo ii;
100            ii.FineTune = GetGigEngineChannel()->pInstrument->FineTune;
101            ii.PitchbendRange = GetGigEngineChannel()->pInstrument->PitchbendRange;
102    
103            return ii;
104        }
105    
106        double Voice::GetSampleAttenuation() {
107            return pRegion->SampleAttenuation;
108      }      }
109    
110      /**      double Voice::GetVelocityAttenuation(uint8_t MIDIKeyVelocity) {
111       *  Initializes and triggers the voice, a disk stream will be launched if          return pRegion->GetVelocityAttenuation(MIDIKeyVelocity);
112       *  needed.      }
113       *  
114       *  @param itNoteOnEvent       - event that caused triggering of this voice      double Voice::GetVelocityRelease(uint8_t MIDIKeyVelocity) {
115       *  @param PitchBend           - MIDI detune factor (-8192 ... +8191)          return pRegion->GetVelocityRelease(MIDIKeyVelocity);
116       *  @param pInstrument         - points to the loaded instrument which provides sample wave(s) and articulation data      }
117       *  @param iLayer              - layer number this voice refers to (only if this is a layered sound of course)  
118       *  @param ReleaseTriggerVoice - if this new voice is a release trigger voice (optional, default = false)      void Voice::ProcessCCEvent(RTList<Event>::Iterator& itEvent) {
119       *  @param VoiceStealing       - wether the voice is allowed to steal voices for further subvoices          if (itEvent->Type == Event::type_control_change && itEvent->Param.CC.Controller) { // if (valid) MIDI control change event
120       *  @returns 0 on success, a value < 0 if something failed              if (pRegion->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&
121       */                  itEvent->Param.CC.Controller == pRegion->AttenuationController.controller_number) {
122      int Voice::Trigger(Pool<Event>::Iterator& itNoteOnEvent, int PitchBend, ::gig::Instrument* pInstrument, int iLayer, bool ReleaseTriggerVoice, bool VoiceStealing) {                  CrossfadeSmoother.update(AbstractEngine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.CC.Value)]);
         if (!pInstrument) {  
            dmsg(1,("voice::trigger: !pInstrument\n"));  
            exit(EXIT_FAILURE);  
         }  
         if (itNoteOnEvent->FragmentPos() > pEngine->MaxSamplesPerCycle) { // FIXME: should be removed before the final release (purpose: just a sanity check for debugging)  
             dmsg(1,("Voice::Trigger(): ERROR, TriggerDelay > Totalsamples\n"));  
         }  
   
         Type            = type_normal;  
         MIDIKey         = itNoteOnEvent->Param.Note.Key;  
         pRegion         = pInstrument->GetRegion(MIDIKey);  
         PlaybackState   = playback_state_ram; // we always start playback from RAM cache and switch then to disk if needed  
         Delay           = itNoteOnEvent->FragmentPos();  
         itTriggerEvent  = itNoteOnEvent;  
         itKillEvent     = Pool<Event>::Iterator();  
         itChildVoice    = Pool<Voice>::Iterator();  
   
         if (!pRegion) {  
             std::cerr << "gig::Voice: No Region defined for MIDI key " << MIDIKey << std::endl << std::flush;  
             KillImmediately();  
             return -1;  
         }  
   
         KeyGroup = pRegion->KeyGroup;  
   
         // get current dimension values to select the right dimension region  
         //FIXME: controller values for selecting the dimension region here are currently not sample accurate  
         uint DimValues[5] = {0,0,0,0,0};  
         for (int i = pRegion->Dimensions - 1; i >= 0; i--) {  
             switch (pRegion->pDimensionDefinitions[i].dimension) {  
                 case ::gig::dimension_samplechannel:  
                     DimValues[i] = 0; //TODO: we currently ignore this dimension  
                     break;  
                 case ::gig::dimension_layer:  
                     DimValues[i] = iLayer;  
                     // if this is the 1st layer then spawn further voices for all the other layers  
                     if (iLayer == 0)  
                         for (int iNewLayer = 1; iNewLayer < pRegion->pDimensionDefinitions[i].zones; iNewLayer++)  
                             itChildVoice = pEngine->LaunchVoice(itNoteOnEvent, iNewLayer, ReleaseTriggerVoice, VoiceStealing);  
                     break;  
                 case ::gig::dimension_velocity:  
                     DimValues[i] = itNoteOnEvent->Param.Note.Velocity;  
                     break;  
                 case ::gig::dimension_channelaftertouch:  
                     DimValues[i] = 0; //TODO: we currently ignore this dimension  
                     break;  
                 case ::gig::dimension_releasetrigger:  
                     Type = (ReleaseTriggerVoice) ? type_release_trigger : (!iLayer) ? type_release_trigger_required : type_normal;  
                     DimValues[i] = (uint) ReleaseTriggerVoice;  
                     break;  
                 case ::gig::dimension_keyboard:  
                     DimValues[i] = (uint) itNoteOnEvent->Param.Note.Key;  
                     break;  
                 case ::gig::dimension_modwheel:  
                     DimValues[i] = pEngine->ControllerTable[1];  
                     break;  
                 case ::gig::dimension_breath:  
                     DimValues[i] = pEngine->ControllerTable[2];  
                     break;  
                 case ::gig::dimension_foot:  
                     DimValues[i] = pEngine->ControllerTable[4];  
                     break;  
                 case ::gig::dimension_portamentotime:  
                     DimValues[i] = pEngine->ControllerTable[5];  
                     break;  
                 case ::gig::dimension_effect1:  
                     DimValues[i] = pEngine->ControllerTable[12];  
                     break;  
                 case ::gig::dimension_effect2:  
                     DimValues[i] = pEngine->ControllerTable[13];  
                     break;  
                 case ::gig::dimension_genpurpose1:  
                     DimValues[i] = pEngine->ControllerTable[16];  
                     break;  
                 case ::gig::dimension_genpurpose2:  
                     DimValues[i] = pEngine->ControllerTable[17];  
                     break;  
                 case ::gig::dimension_genpurpose3:  
                     DimValues[i] = pEngine->ControllerTable[18];  
                     break;  
                 case ::gig::dimension_genpurpose4:  
                     DimValues[i] = pEngine->ControllerTable[19];  
                     break;  
                 case ::gig::dimension_sustainpedal:  
                     DimValues[i] = pEngine->ControllerTable[64];  
                     break;  
                 case ::gig::dimension_portamento:  
                     DimValues[i] = pEngine->ControllerTable[65];  
                     break;  
                 case ::gig::dimension_sostenutopedal:  
                     DimValues[i] = pEngine->ControllerTable[66];  
                     break;  
                 case ::gig::dimension_softpedal:  
                     DimValues[i] = pEngine->ControllerTable[67];  
                     break;  
                 case ::gig::dimension_genpurpose5:  
                     DimValues[i] = pEngine->ControllerTable[80];  
                     break;  
                 case ::gig::dimension_genpurpose6:  
                     DimValues[i] = pEngine->ControllerTable[81];  
                     break;  
                 case ::gig::dimension_genpurpose7:  
                     DimValues[i] = pEngine->ControllerTable[82];  
                     break;  
                 case ::gig::dimension_genpurpose8:  
                     DimValues[i] = pEngine->ControllerTable[83];  
                     break;  
                 case ::gig::dimension_effect1depth:  
                     DimValues[i] = pEngine->ControllerTable[91];  
                     break;  
                 case ::gig::dimension_effect2depth:  
                     DimValues[i] = pEngine->ControllerTable[92];  
                     break;  
                 case ::gig::dimension_effect3depth:  
                     DimValues[i] = pEngine->ControllerTable[93];  
                     break;  
                 case ::gig::dimension_effect4depth:  
                     DimValues[i] = pEngine->ControllerTable[94];  
                     break;  
                 case ::gig::dimension_effect5depth:  
                     DimValues[i] = pEngine->ControllerTable[95];  
                     break;  
                 case ::gig::dimension_none:  
                     std::cerr << "gig::Voice::Trigger() Error: dimension=none\n" << std::flush;  
                     break;  
                 default:  
                     std::cerr << "gig::Voice::Trigger() Error: Unknown dimension\n" << std::flush;  
123              }              }
124          }          }
125          pDimRgn = pRegion->GetDimensionRegionByValue(DimValues[4],DimValues[3],DimValues[2],DimValues[1],DimValues[0]);      }
126    
127          pSample = pDimRgn->pSample; // sample won't change until the voice is finished      void Voice::ProcessCutoffEvent(RTList<Event>::Iterator& itEvent) {
128            int ccvalue = itEvent->Param.CC.Value;
129            if (VCFCutoffCtrl.value == ccvalue) return;
130            VCFCutoffCtrl.value = ccvalue;
131            if (pRegion->VCFCutoffControllerInvert)  ccvalue = 127 - ccvalue;
132            if (ccvalue < pRegion->VCFVelocityScale) ccvalue = pRegion->VCFVelocityScale;
133            float cutoff = CutoffBase * float(ccvalue);
134            if (cutoff > 127.0f) cutoff = 127.0f;
135    
136          // select channel mode (mono or stereo)          VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of fFinalCutoff next time
137          SYNTHESIS_MODE_SET_CHANNELS(SynthesisMode, pSample->Channels == 2);          fFinalCutoff = cutoff;
138        }
139    
140          // get starting crossfade volume level      double Voice::CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity) {
141          switch (pDimRgn->AttenuationController.type) {          float crossfadeVolume;
142            switch (pRegion->AttenuationController.type) {
143              case ::gig::attenuation_ctrl_t::type_channelaftertouch:              case ::gig::attenuation_ctrl_t::type_channelaftertouch:
144                  CrossfadeVolume = 1.0f; //TODO: aftertouch not supported yet                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[128])];
145                  break;                  break;
146              case ::gig::attenuation_ctrl_t::type_velocity:              case ::gig::attenuation_ctrl_t::type_velocity:
147                  CrossfadeVolume = CrossfadeAttenuation(itNoteOnEvent->Param.Note.Velocity);                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(MIDIKeyVelocity)];
148                  break;                  break;
149              case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate              case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate
150                  CrossfadeVolume = CrossfadeAttenuation(pEngine->ControllerTable[pDimRgn->AttenuationController.controller_number]);                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[pRegion->AttenuationController.controller_number])];
151                  break;                  break;
152              case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined              case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined
153              default:              default:
154                  CrossfadeVolume = 1.0f;                  crossfadeVolume = 1.0f;
155          }          }
156    
157          PanLeft  = 1.0f - float(RTMath::Max(pDimRgn->Pan, 0)) /  63.0f;          return crossfadeVolume;
158          PanRight = 1.0f - float(RTMath::Min(pDimRgn->Pan, 0)) / -64.0f;      }
   
         Pos = pDimRgn->SampleStartOffset; // offset where we should start playback of sample (0 - 2000 sample points)  
   
         // Check if the sample needs disk streaming or is too short for that  
         long cachedsamples = pSample->GetCache().Size / pSample->FrameSize;  
         DiskVoice          = cachedsamples < pSample->SamplesTotal;  
   
         if (DiskVoice) { // voice to be streamed from disk  
             MaxRAMPos = cachedsamples - (pEngine->MaxSamplesPerCycle << MAX_PITCH) / pSample->Channels; //TODO: this calculation is too pessimistic and may better be moved to Render() method, so it calculates MaxRAMPos dependent to the current demand of sample points to be rendered (e.g. in case of JACK)  
   
             // check if there's a loop defined which completely fits into the cached (RAM) part of the sample  
             if (pSample->Loops && pSample->LoopEnd <= MaxRAMPos) {  
                 RAMLoop        = true;  
                 LoopCyclesLeft = pSample->LoopPlayCount;  
             }  
             else RAMLoop = false;  
159    
160              if (pDiskThread->OrderNewStream(&DiskStreamRef, pSample, MaxRAMPos, !RAMLoop) < 0) {      double Voice::GetEG1ControllerValue(uint8_t MIDIKeyVelocity) {
161                  dmsg(1,("Disk stream order failed!\n"));          double eg1controllervalue = 0;
162                  KillImmediately();          switch (pRegion->EG1Controller.type) {
163                  return -1;              case ::gig::eg1_ctrl_t::type_none: // no controller defined
164              }                  eg1controllervalue = 0;
165              dmsg(4,("Disk voice launched (cached samples: %d, total Samples: %d, MaxRAMPos: %d, RAMLooping: %s)\n", cachedsamples, pSample->SamplesTotal, MaxRAMPos, (RAMLoop) ? "yes" : "no"));                  break;
166          }              case ::gig::eg1_ctrl_t::type_channelaftertouch:
167          else { // RAM only voice                  eg1controllervalue = GetGigEngineChannel()->ControllerTable[128];
168              MaxRAMPos = cachedsamples;                  break;
169              if (pSample->Loops) {              case ::gig::eg1_ctrl_t::type_velocity:
170                  RAMLoop        = true;                  eg1controllervalue = MIDIKeyVelocity;
171                  LoopCyclesLeft = pSample->LoopPlayCount;                  break;
172              }              case ::gig::eg1_ctrl_t::type_controlchange: // MIDI control change controller
173              else RAMLoop = false;                  eg1controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG1Controller.controller_number];
174              dmsg(4,("RAM only voice launched (Looping: %s)\n", (RAMLoop) ? "yes" : "no"));                  break;
175          }          }
176            if (pRegion->EG1ControllerInvert) eg1controllervalue = 127 - eg1controllervalue;
177    
178            return eg1controllervalue;
179        }
180    
181          // calculate initial pitch value      Voice::EGInfo Voice::CalculateEG1ControllerInfluence(double eg1ControllerValue) {
182          {          EGInfo eg;
183              double pitchbasecents = pDimRgn->FineTune * 10 + (int) pEngine->ScaleTuning[MIDIKey % 12];          // (eg1attack is different from the others)
184              if (pDimRgn->PitchTrack) pitchbasecents += (MIDIKey - (int) pDimRgn->UnityNote) * 100;          eg.Attack  = (pRegion->EG1ControllerAttackInfluence)  ?
185              this->PitchBase = RTMath::CentsToFreqRatio(pitchbasecents) * (double(pSample->SamplesPerSecond) / double(pEngine->pAudioOutputDevice->SampleRate()));              1 + 0.031 * (double) (pRegion->EG1ControllerAttackInfluence == 1 ?
186              this->PitchBend = RTMath::CentsToFreqRatio(((double) PitchBend / 8192.0) * 200.0); // pitchbend wheel +-2 semitones = 200 cents                                    1 : 1 << pRegion->EG1ControllerAttackInfluence) * eg1ControllerValue : 1.0;
187          }          eg.Decay   = (pRegion->EG1ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerDecayInfluence)   * eg1ControllerValue : 1.0;
188            eg.Release = (pRegion->EG1ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerReleaseInfluence) * eg1ControllerValue : 1.0;
         Volume = pDimRgn->GetVelocityAttenuation(itNoteOnEvent->Param.Note.Velocity) / 32768.0f; // we downscale by 32768 to convert from int16 value range to DSP value range (which is -1.0..1.0)  
   
         // setup EG 1 (VCA EG)  
         {  
             // get current value of EG1 controller  
             double eg1controllervalue;  
             switch (pDimRgn->EG1Controller.type) {  
                 case ::gig::eg1_ctrl_t::type_none: // no controller defined  
                     eg1controllervalue = 0;  
                     break;  
                 case ::gig::eg1_ctrl_t::type_channelaftertouch:  
                     eg1controllervalue = 0; // TODO: aftertouch not yet supported  
                     break;  
                 case ::gig::eg1_ctrl_t::type_velocity:  
                     eg1controllervalue = itNoteOnEvent->Param.Note.Velocity;  
                     break;  
                 case ::gig::eg1_ctrl_t::type_controlchange: // MIDI control change controller  
                     eg1controllervalue = pEngine->ControllerTable[pDimRgn->EG1Controller.controller_number];  
                     break;  
             }  
             if (pDimRgn->EG1ControllerInvert) eg1controllervalue = 127 - eg1controllervalue;  
   
             // calculate influence of EG1 controller on EG1's parameters (TODO: needs to be fine tuned)  
             double eg1attack  = (pDimRgn->EG1ControllerAttackInfluence)  ? 0.0001 * (double) (1 << pDimRgn->EG1ControllerAttackInfluence)  * eg1controllervalue : 0.0;  
             double eg1decay   = (pDimRgn->EG1ControllerDecayInfluence)   ? 0.0001 * (double) (1 << pDimRgn->EG1ControllerDecayInfluence)   * eg1controllervalue : 0.0;  
             double eg1release = (pDimRgn->EG1ControllerReleaseInfluence) ? 0.0001 * (double) (1 << pDimRgn->EG1ControllerReleaseInfluence) * eg1controllervalue : 0.0;  
   
             pEG1->Trigger(pDimRgn->EG1PreAttack,  
                           pDimRgn->EG1Attack + eg1attack,  
                           pDimRgn->EG1Hold,  
                           pSample->LoopStart,  
                           pDimRgn->EG1Decay1 + eg1decay,  
                           pDimRgn->EG1Decay2 + eg1decay,  
                           pDimRgn->EG1InfiniteSustain,  
                           pDimRgn->EG1Sustain,  
                           pDimRgn->EG1Release + eg1release,  
                           Delay);  
         }  
   
189    
190          // setup EG 2 (VCF Cutoff EG)          return eg;
191          {      }
             // get current value of EG2 controller  
             double eg2controllervalue;  
             switch (pDimRgn->EG2Controller.type) {  
                 case ::gig::eg2_ctrl_t::type_none: // no controller defined  
                     eg2controllervalue = 0;  
                     break;  
                 case ::gig::eg2_ctrl_t::type_channelaftertouch:  
                     eg2controllervalue = 0; // TODO: aftertouch not yet supported  
                     break;  
                 case ::gig::eg2_ctrl_t::type_velocity:  
                     eg2controllervalue = itNoteOnEvent->Param.Note.Velocity;  
                     break;  
                 case ::gig::eg2_ctrl_t::type_controlchange: // MIDI control change controller  
                     eg2controllervalue = pEngine->ControllerTable[pDimRgn->EG2Controller.controller_number];  
                     break;  
             }  
             if (pDimRgn->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue;  
192    
193              // calculate influence of EG2 controller on EG2's parameters (TODO: needs to be fine tuned)      double Voice::GetEG2ControllerValue(uint8_t MIDIKeyVelocity) {
194              double eg2attack  = (pDimRgn->EG2ControllerAttackInfluence)  ? 0.0001 * (double) (1 << pDimRgn->EG2ControllerAttackInfluence)  * eg2controllervalue : 0.0;          double eg2controllervalue = 0;
195              double eg2decay   = (pDimRgn->EG2ControllerDecayInfluence)   ? 0.0001 * (double) (1 << pDimRgn->EG2ControllerDecayInfluence)   * eg2controllervalue : 0.0;          switch (pRegion->EG2Controller.type) {
196              double eg2release = (pDimRgn->EG2ControllerReleaseInfluence) ? 0.0001 * (double) (1 << pDimRgn->EG2ControllerReleaseInfluence) * eg2controllervalue : 0.0;              case ::gig::eg2_ctrl_t::type_none: // no controller defined
197                    eg2controllervalue = 0;
198              pEG2->Trigger(pDimRgn->EG2PreAttack,                  break;
199                            pDimRgn->EG2Attack + eg2attack,              case ::gig::eg2_ctrl_t::type_channelaftertouch:
200                            false,                  eg2controllervalue = GetGigEngineChannel()->ControllerTable[128];
201                            pSample->LoopStart,                  break;
202                            pDimRgn->EG2Decay1 + eg2decay,              case ::gig::eg2_ctrl_t::type_velocity:
203                            pDimRgn->EG2Decay2 + eg2decay,                  eg2controllervalue = MIDIKeyVelocity;
204                            pDimRgn->EG2InfiniteSustain,                  break;
205                            pDimRgn->EG2Sustain,              case ::gig::eg2_ctrl_t::type_controlchange: // MIDI control change controller
206                            pDimRgn->EG2Release + eg2release,                  eg2controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG2Controller.controller_number];
207                            Delay);                  break;
208          }          }
209            if (pRegion->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue;
210    
211            return eg2controllervalue;
212        }
213    
214          // setup EG 3 (VCO EG)      Voice::EGInfo Voice::CalculateEG2ControllerInfluence(double eg2ControllerValue) {
215          {          EGInfo eg;
216            double eg3depth = RTMath::CentsToFreqRatio(pDimRgn->EG3Depth);          eg.Attack  = (pRegion->EG2ControllerAttackInfluence)  ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerAttackInfluence)  * eg2ControllerValue : 1.0;
217            pEG3->Trigger(eg3depth, pDimRgn->EG3Attack, Delay);          eg.Decay   = (pRegion->EG2ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerDecayInfluence)   * eg2ControllerValue : 1.0;
218          }          eg.Release = (pRegion->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerReleaseInfluence) * eg2ControllerValue : 1.0;
219    
220            return eg;
221        }
222    
223          // setup LFO 1 (VCA LFO)      void Voice::InitLFO1() {
224          {          uint16_t lfo1_internal_depth;
225              uint16_t lfo1_internal_depth;          switch (pRegion->LFO1Controller) {
226              switch (pDimRgn->LFO1Controller) {              case ::gig::lfo1_ctrl_internal:
227                  case ::gig::lfo1_ctrl_internal:                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
228                      lfo1_internal_depth  = pDimRgn->LFO1InternalDepth;                  pLFO1->ExtController = 0; // no external controller
229                      pLFO1->ExtController = 0; // no external controller                  bLFO1Enabled         = (lfo1_internal_depth > 0);
230                      break;                  break;
231                  case ::gig::lfo1_ctrl_modwheel:              case ::gig::lfo1_ctrl_modwheel:
232                      lfo1_internal_depth  = 0;                  lfo1_internal_depth  = 0;
233                      pLFO1->ExtController = 1; // MIDI controller 1                  pLFO1->ExtController = 1; // MIDI controller 1
234                      break;                  bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
235                  case ::gig::lfo1_ctrl_breath:                  break;
236                      lfo1_internal_depth  = 0;              case ::gig::lfo1_ctrl_breath:
237                      pLFO1->ExtController = 2; // MIDI controller 2                  lfo1_internal_depth  = 0;
238                      break;                  pLFO1->ExtController = 2; // MIDI controller 2
239                  case ::gig::lfo1_ctrl_internal_modwheel:                  bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
240                      lfo1_internal_depth  = pDimRgn->LFO1InternalDepth;                  break;
241                      pLFO1->ExtController = 1; // MIDI controller 1              case ::gig::lfo1_ctrl_internal_modwheel:
242                      break;                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
243                  case ::gig::lfo1_ctrl_internal_breath:                  pLFO1->ExtController = 1; // MIDI controller 1
244                      lfo1_internal_depth  = pDimRgn->LFO1InternalDepth;                  bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
245                      pLFO1->ExtController = 2; // MIDI controller 2                  break;
246                      break;              case ::gig::lfo1_ctrl_internal_breath:
247                  default:                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
248                      lfo1_internal_depth  = 0;                  pLFO1->ExtController = 2; // MIDI controller 2
249                      pLFO1->ExtController = 0; // no external controller                  bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
250              }                  break;
251              pLFO1->Trigger(pDimRgn->LFO1Frequency,              default:
252                            lfo1_internal_depth,                  lfo1_internal_depth  = 0;
253                            pDimRgn->LFO1ControlDepth,                  pLFO1->ExtController = 0; // no external controller
254                            pEngine->ControllerTable[pLFO1->ExtController],                  bLFO1Enabled         = false;
255                            pDimRgn->LFO1FlipPhase,          }
256                            pEngine->SampleRate,          if (bLFO1Enabled) {
257                            Delay);              pLFO1->trigger(pRegion->LFO1Frequency,
258                               start_level_min,
259                               lfo1_internal_depth,
260                               pRegion->LFO1ControlDepth,
261                               pRegion->LFO1FlipPhase,
262                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
263                pLFO1->update(pLFO1->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO1->ExtController] : 0);
264          }          }
265        }
266    
267        void Voice::InitLFO2() {
268          // setup LFO 2 (VCF Cutoff LFO)          uint16_t lfo2_internal_depth;
269          {          switch (pRegion->LFO2Controller) {
270              uint16_t lfo2_internal_depth;              case ::gig::lfo2_ctrl_internal:
271              switch (pDimRgn->LFO2Controller) {                  lfo2_internal_depth  = pRegion->LFO2InternalDepth;
272                  case ::gig::lfo2_ctrl_internal:                  pLFO2->ExtController = 0; // no external controller
273                      lfo2_internal_depth  = pDimRgn->LFO2InternalDepth;                  bLFO2Enabled         = (lfo2_internal_depth > 0);
274                      pLFO2->ExtController = 0; // no external controller                  break;
275                      break;              case ::gig::lfo2_ctrl_modwheel:
276                  case ::gig::lfo2_ctrl_modwheel:                  lfo2_internal_depth  = 0;
277                      lfo2_internal_depth  = 0;                  pLFO2->ExtController = 1; // MIDI controller 1
278                      pLFO2->ExtController = 1; // MIDI controller 1                  bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
279                      break;                  break;
280                  case ::gig::lfo2_ctrl_foot:              case ::gig::lfo2_ctrl_foot:
281                      lfo2_internal_depth  = 0;                  lfo2_internal_depth  = 0;
282                      pLFO2->ExtController = 4; // MIDI controller 4                  pLFO2->ExtController = 4; // MIDI controller 4
283                      break;                  bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
284                  case ::gig::lfo2_ctrl_internal_modwheel:                  break;
285                      lfo2_internal_depth  = pDimRgn->LFO2InternalDepth;              case ::gig::lfo2_ctrl_internal_modwheel:
286                      pLFO2->ExtController = 1; // MIDI controller 1                  lfo2_internal_depth  = pRegion->LFO2InternalDepth;
287                      break;                  pLFO2->ExtController = 1; // MIDI controller 1
288                  case ::gig::lfo2_ctrl_internal_foot:                  bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
289                      lfo2_internal_depth  = pDimRgn->LFO2InternalDepth;                  break;
290                      pLFO2->ExtController = 4; // MIDI controller 4              case ::gig::lfo2_ctrl_internal_foot:
291                      break;                  lfo2_internal_depth  = pRegion->LFO2InternalDepth;
292                  default:                  pLFO2->ExtController = 4; // MIDI controller 4
293                      lfo2_internal_depth  = 0;                  bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
294                      pLFO2->ExtController = 0; // no external controller                  break;
295              }              default:
296              pLFO2->Trigger(pDimRgn->LFO2Frequency,                  lfo2_internal_depth  = 0;
297                            lfo2_internal_depth,                  pLFO2->ExtController = 0; // no external controller
298                            pDimRgn->LFO2ControlDepth,                  bLFO2Enabled         = false;
299                            pEngine->ControllerTable[pLFO2->ExtController],          }
300                            pDimRgn->LFO2FlipPhase,          if (bLFO2Enabled) {
301                            pEngine->SampleRate,              pLFO2->trigger(pRegion->LFO2Frequency,
302                            Delay);                             start_level_max,
303                               lfo2_internal_depth,
304                               pRegion->LFO2ControlDepth,
305                               pRegion->LFO2FlipPhase,
306                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
307                pLFO2->update(pLFO2->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO2->ExtController] : 0);
308          }          }
309        }
310    
311        void Voice::InitLFO3() {
312          // setup LFO 3 (VCO LFO)          uint16_t lfo3_internal_depth;
313          {          switch (pRegion->LFO3Controller) {
314              uint16_t lfo3_internal_depth;              case ::gig::lfo3_ctrl_internal:
315              switch (pDimRgn->LFO3Controller) {                  lfo3_internal_depth  = pRegion->LFO3InternalDepth;
316                  case ::gig::lfo3_ctrl_internal:                  pLFO3->ExtController = 0; // no external controller
317                      lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;                  bLFO3Enabled         = (lfo3_internal_depth > 0);
318                      pLFO3->ExtController = 0; // no external controller                  break;
319                      break;              case ::gig::lfo3_ctrl_modwheel:
320                  case ::gig::lfo3_ctrl_modwheel:                  lfo3_internal_depth  = 0;
321                      lfo3_internal_depth  = 0;                  pLFO3->ExtController = 1; // MIDI controller 1
322                      pLFO3->ExtController = 1; // MIDI controller 1                  bLFO3Enabled         = (pRegion->LFO3ControlDepth > 0);
323                      break;                  break;
324                  case ::gig::lfo3_ctrl_aftertouch:              case ::gig::lfo3_ctrl_aftertouch:
325                      lfo3_internal_depth  = 0;                  lfo3_internal_depth  = 0;
326                      pLFO3->ExtController = 0; // TODO: aftertouch not implemented yet                  pLFO3->ExtController = 128;
327                      break;                  bLFO3Enabled         = true;
328                  case ::gig::lfo3_ctrl_internal_modwheel:                  break;
329                      lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;              case ::gig::lfo3_ctrl_internal_modwheel:
330                      pLFO3->ExtController = 1; // MIDI controller 1                  lfo3_internal_depth  = pRegion->LFO3InternalDepth;
331                      break;                  pLFO3->ExtController = 1; // MIDI controller 1
332                  case ::gig::lfo3_ctrl_internal_aftertouch:                  bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
333                      lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;                  break;
334                      pLFO1->ExtController = 0; // TODO: aftertouch not implemented yet              case ::gig::lfo3_ctrl_internal_aftertouch:
335                      break;                  lfo3_internal_depth  = pRegion->LFO3InternalDepth;
336                  default:                  pLFO3->ExtController = 128;
337                      lfo3_internal_depth  = 0;                  bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
338                      pLFO3->ExtController = 0; // no external controller                  break;
339              }              default:
340              pLFO3->Trigger(pDimRgn->LFO3Frequency,                  lfo3_internal_depth  = 0;
341                            lfo3_internal_depth,                  pLFO3->ExtController = 0; // no external controller
342                            pDimRgn->LFO3ControlDepth,                  bLFO3Enabled         = false;
343                            pEngine->ControllerTable[pLFO3->ExtController],          }
344                            false,          if (bLFO3Enabled) {
345                            pEngine->SampleRate,              pLFO3->trigger(pRegion->LFO3Frequency,
346                            Delay);                             start_level_mid,
347                               lfo3_internal_depth,
348                               pRegion->LFO3ControlDepth,
349                               false,
350                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
351                pLFO3->update(pLFO3->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO3->ExtController] : 0);
352          }          }
353        }
354    
355        float Voice::CalculateCutoffBase(uint8_t MIDIKeyVelocity) {
356          #if FORCE_FILTER_USAGE          float cutoff = pRegion->GetVelocityCutoff(MIDIKeyVelocity);
357          SYNTHESIS_MODE_SET_FILTER(SynthesisMode, true);          if (pRegion->VCFKeyboardTracking) {
358          #else // use filter only if instrument file told so              cutoff *= RTMath::CentsToFreqRatioUnlimited((MIDIKey - pRegion->VCFKeyboardTrackingBreakpoint) * 100);
359          SYNTHESIS_MODE_SET_FILTER(SynthesisMode, pDimRgn->VCFEnabled);          }
360          #endif // FORCE_FILTER_USAGE          return cutoff;
361          if (pDimRgn->VCFEnabled) {      }
362              #ifdef OVERRIDE_FILTER_CUTOFF_CTRL  
363              VCFCutoffCtrl.controller = OVERRIDE_FILTER_CUTOFF_CTRL;      float Voice::CalculateFinalCutoff(float cutoffBase) {
364              #else // use the one defined in the instrument file          int cvalue;
365              switch (pDimRgn->VCFCutoffController) {          if (VCFCutoffCtrl.controller) {
366                  case ::gig::vcf_cutoff_ctrl_modwheel:              cvalue = GetGigEngineChannel()->ControllerTable[VCFCutoffCtrl.controller];
367                      VCFCutoffCtrl.controller = 1;              if (pRegion->VCFCutoffControllerInvert) cvalue = 127 - cvalue;
368                      break;              // VCFVelocityScale in this case means Minimum cutoff
369                  case ::gig::vcf_cutoff_ctrl_effect1:              if (cvalue < pRegion->VCFVelocityScale) cvalue = pRegion->VCFVelocityScale;
                     VCFCutoffCtrl.controller = 12;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_effect2:  
                     VCFCutoffCtrl.controller = 13;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_breath:  
                     VCFCutoffCtrl.controller = 2;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_foot:  
                     VCFCutoffCtrl.controller = 4;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_sustainpedal:  
                     VCFCutoffCtrl.controller = 64;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_softpedal:  
                     VCFCutoffCtrl.controller = 67;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_genpurpose7:  
                     VCFCutoffCtrl.controller = 82;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_genpurpose8:  
                     VCFCutoffCtrl.controller = 83;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_aftertouch: //TODO: not implemented yet  
                 case ::gig::vcf_cutoff_ctrl_none:  
                 default:  
                     VCFCutoffCtrl.controller = 0;  
                     break;  
             }  
             #endif // OVERRIDE_FILTER_CUTOFF_CTRL  
   
             #ifdef OVERRIDE_FILTER_RES_CTRL  
             VCFResonanceCtrl.controller = OVERRIDE_FILTER_RES_CTRL;  
             #else // use the one defined in the instrument file  
             switch (pDimRgn->VCFResonanceController) {  
                 case ::gig::vcf_res_ctrl_genpurpose3:  
                     VCFResonanceCtrl.controller = 18;  
                     break;  
                 case ::gig::vcf_res_ctrl_genpurpose4:  
                     VCFResonanceCtrl.controller = 19;  
                     break;  
                 case ::gig::vcf_res_ctrl_genpurpose5:  
                     VCFResonanceCtrl.controller = 80;  
                     break;  
                 case ::gig::vcf_res_ctrl_genpurpose6:  
                     VCFResonanceCtrl.controller = 81;  
                     break;  
                 case ::gig::vcf_res_ctrl_none:  
                 default:  
                     VCFResonanceCtrl.controller = 0;  
             }  
             #endif // OVERRIDE_FILTER_RES_CTRL  
   
             #ifndef OVERRIDE_FILTER_TYPE  
             FilterLeft.SetType(pDimRgn->VCFType);  
             FilterRight.SetType(pDimRgn->VCFType);  
             #else // override filter type  
             FilterLeft.SetType(OVERRIDE_FILTER_TYPE);  
             FilterRight.SetType(OVERRIDE_FILTER_TYPE);  
             #endif // OVERRIDE_FILTER_TYPE  
   
             VCFCutoffCtrl.value    = pEngine->ControllerTable[VCFCutoffCtrl.controller];  
             VCFResonanceCtrl.value = pEngine->ControllerTable[VCFResonanceCtrl.controller];  
   
             // calculate cutoff frequency  
             float cutoff = (!VCFCutoffCtrl.controller)  
                 ? exp((float) (127 - itNoteOnEvent->Param.Note.Velocity) * (float) pDimRgn->VCFVelocityScale * 6.2E-5f * FILTER_CUTOFF_COEFF) * FILTER_CUTOFF_MAX  
                 : exp((float) VCFCutoffCtrl.value * 0.00787402f * FILTER_CUTOFF_COEFF) * FILTER_CUTOFF_MAX;  
   
             // calculate resonance  
             float resonance = (float) VCFResonanceCtrl.value * 0.00787f;   // 0.0..1.0  
             if (pDimRgn->VCFKeyboardTracking) {  
                 resonance += (float) (itNoteOnEvent->Param.Note.Key - pDimRgn->VCFKeyboardTrackingBreakpoint) * 0.00787f;  
             }  
             Constrain(resonance, 0.0, 1.0); // correct resonance if outside allowed value range (0.0..1.0)  
   
             VCFCutoffCtrl.fvalue    = cutoff - FILTER_CUTOFF_MIN;  
             VCFResonanceCtrl.fvalue = resonance;  
   
             FilterUpdateCounter = -1;  
370          }          }
371          else {          else {
372              VCFCutoffCtrl.controller    = 0;              cvalue = pRegion->VCFCutoff;
             VCFResonanceCtrl.controller = 0;  
373          }          }
374            float fco = cutoffBase * float(cvalue);
375            if (fco > 127.0f) fco = 127.0f;
376    
377          return 0; // success          return fco;
378      }      }
379    
380      /**      uint8_t Voice::GetVCFCutoffCtrl() {
381       *  Renders the audio data for this voice for the current audio fragment.          uint8_t ctrl;
382       *  The sample input data can either come from RAM (cached sample or sample          switch (pRegion->VCFCutoffController) {
383       *  part) or directly from disk. The output signal will be rendered by              case ::gig::vcf_cutoff_ctrl_modwheel:
384       *  resampling / interpolation. If this voice is a disk streaming voice and                  ctrl = 1;
385       *  the voice completely played back the cached RAM part of the sample, it                  break;
386       *  will automatically switch to disk playback for the next RenderAudio()              case ::gig::vcf_cutoff_ctrl_effect1:
387       *  call.                  ctrl = 12;
388       *                  break;
389       *  @param Samples - number of samples to be rendered in this audio fragment cycle              case ::gig::vcf_cutoff_ctrl_effect2:
390       */                  ctrl = 13;
391      void Voice::Render(uint Samples) {                  break;
392                case ::gig::vcf_cutoff_ctrl_breath:
393          // select default values for synthesis mode bits                  ctrl = 2;
394          SYNTHESIS_MODE_SET_INTERPOLATE(SynthesisMode, (PitchBase * PitchBend) != 1.0f);                  break;
395          SYNTHESIS_MODE_SET_CONSTPITCH(SynthesisMode, true);              case ::gig::vcf_cutoff_ctrl_foot:
396          SYNTHESIS_MODE_SET_LOOP(SynthesisMode, false);                  ctrl = 4;
397                    break;
398          // Reset the synthesis parameter matrix              case ::gig::vcf_cutoff_ctrl_sustainpedal:
399                    ctrl = 64;
400          pEngine->ResetSynthesisParameters(Event::destination_vca, this->Volume * this->CrossfadeVolume * pEngine->GlobalVolume);                  break;
401          pEngine->ResetSynthesisParameters(Event::destination_vco, this->PitchBase);              case ::gig::vcf_cutoff_ctrl_softpedal:
402          pEngine->ResetSynthesisParameters(Event::destination_vcfc, VCFCutoffCtrl.fvalue);                  ctrl = 67;
403          pEngine->ResetSynthesisParameters(Event::destination_vcfr, VCFResonanceCtrl.fvalue);                  break;
404                case ::gig::vcf_cutoff_ctrl_genpurpose7:
405          // Apply events to the synthesis parameter matrix                  ctrl = 82;
406          ProcessEvents(Samples);                  break;
407                case ::gig::vcf_cutoff_ctrl_genpurpose8:
408          // Let all modulators write their parameter changes to the synthesis parameter matrix for the current audio fragment                  ctrl = 83;
409          pEG1->Process(Samples, pEngine->pMIDIKeyInfo[MIDIKey].pEvents, itTriggerEvent, this->Pos, this->PitchBase * this->PitchBend, itKillEvent);                  break;
410          pEG2->Process(Samples, pEngine->pMIDIKeyInfo[MIDIKey].pEvents, itTriggerEvent, this->Pos, this->PitchBase * this->PitchBend);              case ::gig::vcf_cutoff_ctrl_aftertouch:
411          if (pEG3->Process(Samples)) { // if pitch EG is active                  ctrl = 128;
412              SYNTHESIS_MODE_SET_INTERPOLATE(SynthesisMode, true);                  break;
413              SYNTHESIS_MODE_SET_CONSTPITCH(SynthesisMode, false);              case ::gig::vcf_cutoff_ctrl_none:
414          }              default:
415          pLFO1->Process(Samples);                  ctrl = 0;
416          pLFO2->Process(Samples);                  break;
         if (pLFO3->Process(Samples)) { // if pitch LFO modulation is active  
             SYNTHESIS_MODE_SET_INTERPOLATE(SynthesisMode, true);  
             SYNTHESIS_MODE_SET_CONSTPITCH(SynthesisMode, false);  
         }  
   
         if (SYNTHESIS_MODE_GET_FILTER(SynthesisMode))  
                 CalculateBiquadParameters(Samples); // calculate the final biquad filter parameters  
   
         switch (this->PlaybackState) {  
   
             case playback_state_ram: {  
                     if (RAMLoop) SYNTHESIS_MODE_SET_LOOP(SynthesisMode, true); // enable looping  
   
                     // render current fragment  
                     Synthesize(Samples, (sample_t*) pSample->GetCache().pStart, Delay);  
   
                     if (DiskVoice) {  
                         // check if we reached the allowed limit of the sample RAM cache  
                         if (Pos > MaxRAMPos) {  
                             dmsg(5,("Voice: switching to disk playback (Pos=%f)\n", Pos));  
                             this->PlaybackState = playback_state_disk;  
                         }  
                     }  
                     else if (Pos >= pSample->GetCache().Size / pSample->FrameSize) {  
                         this->PlaybackState = playback_state_end;  
                     }  
                 }  
                 break;  
   
             case playback_state_disk: {  
                     if (!DiskStreamRef.pStream) {  
                         // check if the disk thread created our ordered disk stream in the meantime  
                         DiskStreamRef.pStream = pDiskThread->AskForCreatedStream(DiskStreamRef.OrderID);  
                         if (!DiskStreamRef.pStream) {  
                             std::cout << stderr << "Disk stream not available in time!" << std::endl << std::flush;  
                             KillImmediately();  
                             return;  
                         }  
                         DiskStreamRef.pStream->IncrementReadPos(pSample->Channels * (int(Pos) - MaxRAMPos));  
                         Pos -= int(Pos);  
                     }  
   
                     // add silence sample at the end if we reached the end of the stream (for the interpolator)  
                     if (DiskStreamRef.State == Stream::state_end && DiskStreamRef.pStream->GetReadSpace() < (pEngine->MaxSamplesPerCycle << MAX_PITCH) / pSample->Channels) {  
                         DiskStreamRef.pStream->WriteSilence((pEngine->MaxSamplesPerCycle << MAX_PITCH) / pSample->Channels);  
                         this->PlaybackState = playback_state_end;  
                     }  
   
                     sample_t* ptr = DiskStreamRef.pStream->GetReadPtr(); // get the current read_ptr within the ringbuffer where we read the samples from  
   
                     // render current audio fragment  
                     Synthesize(Samples, ptr, Delay);  
   
                     DiskStreamRef.pStream->IncrementReadPos(int(Pos) * pSample->Channels);  
                     Pos -= int(Pos);  
                 }  
                 break;  
   
             case playback_state_end:  
                 std::cerr << "gig::Voice::Render(): entered with playback_state_end, this is a bug!\n" << std::flush;  
                 break;  
         }  
   
         // Reset synthesis event lists (except VCO, as VCO events apply channel wide currently)  
         pEngine->pSynthesisEvents[Event::destination_vca]->clear();  
         pEngine->pSynthesisEvents[Event::destination_vcfc]->clear();  
         pEngine->pSynthesisEvents[Event::destination_vcfr]->clear();  
   
         // Reset delay  
         Delay = 0;  
   
         itTriggerEvent = Pool<Event>::Iterator();  
   
         // If sample stream or release stage finished, kill the voice  
         if (PlaybackState == playback_state_end || pEG1->GetStage() == EGADSR::stage_end) KillImmediately();  
     }  
   
     /**  
      *  Resets voice variables. Should only be called if rendering process is  
      *  suspended / not running.  
      */  
     void Voice::Reset() {  
         pLFO1->Reset();  
         pLFO2->Reset();  
         pLFO3->Reset();  
         FilterLeft.Reset();  
         FilterRight.Reset();  
         DiskStreamRef.pStream = NULL;  
         DiskStreamRef.hStream = 0;  
         DiskStreamRef.State   = Stream::state_unused;  
         DiskStreamRef.OrderID = 0;  
         PlaybackState = playback_state_end;  
         itTriggerEvent = Pool<Event>::Iterator();  
         itKillEvent    = Pool<Event>::Iterator();  
     }  
   
     /**  
      *  Process the control change event lists of the engine for the current  
      *  audio fragment. Event values will be applied to the synthesis parameter  
      *  matrix.  
      *  
      *  @param Samples - number of samples to be rendered in this audio fragment cycle  
      */  
     void Voice::ProcessEvents(uint Samples) {  
   
         // dispatch control change events  
         RTList<Event>::Iterator itCCEvent = pEngine->pCCEvents->first();  
         if (Delay) { // skip events that happened before this voice was triggered  
             while (itCCEvent && itCCEvent->FragmentPos() <= Delay) ++itCCEvent;  
         }  
         while (itCCEvent) {  
             if (itCCEvent->Param.CC.Controller) { // if valid MIDI controller  
                 if (itCCEvent->Param.CC.Controller == VCFCutoffCtrl.controller) {  
                     *pEngine->pSynthesisEvents[Event::destination_vcfc]->allocAppend() = *itCCEvent;  
                 }  
                 if (itCCEvent->Param.CC.Controller == VCFResonanceCtrl.controller) {  
                     *pEngine->pSynthesisEvents[Event::destination_vcfr]->allocAppend() = *itCCEvent;  
                 }  
                 if (itCCEvent->Param.CC.Controller == pLFO1->ExtController) {  
                     pLFO1->SendEvent(itCCEvent);  
                 }  
                 if (itCCEvent->Param.CC.Controller == pLFO2->ExtController) {  
                     pLFO2->SendEvent(itCCEvent);  
                 }  
                 if (itCCEvent->Param.CC.Controller == pLFO3->ExtController) {  
                     pLFO3->SendEvent(itCCEvent);  
                 }  
                 if (pDimRgn->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&  
                     itCCEvent->Param.CC.Controller == pDimRgn->AttenuationController.controller_number) { // if crossfade event  
                     *pEngine->pSynthesisEvents[Event::destination_vca]->allocAppend() = *itCCEvent;  
                 }  
             }  
   
             ++itCCEvent;  
         }  
   
   
         // process pitch events  
         {  
             RTList<Event>* pVCOEventList = pEngine->pSynthesisEvents[Event::destination_vco];  
             RTList<Event>::Iterator itVCOEvent = pVCOEventList->first();  
             if (Delay) { // skip events that happened before this voice was triggered  
                 while (itVCOEvent && itVCOEvent->FragmentPos() <= Delay) ++itVCOEvent;  
             }  
             // apply old pitchbend value until first pitch event occurs  
             if (this->PitchBend != 1.0) {  
                 uint end = (itVCOEvent) ? itVCOEvent->FragmentPos() : Samples;  
                 for (uint i = Delay; i < end; i++) {  
                     pEngine->pSynthesisParameters[Event::destination_vco][i] *= this->PitchBend;  
                 }  
             }  
             float pitch;  
             while (itVCOEvent) {  
                 RTList<Event>::Iterator itNextVCOEvent = itVCOEvent;  
                 ++itNextVCOEvent;  
   
                 // calculate the influence length of this event (in sample points)  
                 uint end = (itNextVCOEvent) ? itNextVCOEvent->FragmentPos() : Samples;  
   
                 pitch = RTMath::CentsToFreqRatio(((double) itVCOEvent->Param.Pitch.Pitch / 8192.0) * 200.0); // +-two semitones = +-200 cents  
   
                 // apply pitch value to the pitch parameter sequence  
                 for (uint i = itVCOEvent->FragmentPos(); i < end; i++) {  
                     pEngine->pSynthesisParameters[Event::destination_vco][i] *= pitch;  
                 }  
   
                 itVCOEvent = itNextVCOEvent;  
             }  
             if (!pVCOEventList->isEmpty()) {  
                 this->PitchBend = pitch;  
                 SYNTHESIS_MODE_SET_INTERPOLATE(SynthesisMode, true);  
                 SYNTHESIS_MODE_SET_CONSTPITCH(SynthesisMode, false);  
             }  
         }  
   
         // process volume / attenuation events (TODO: we only handle and _expect_ crossfade events here ATM !)  
         {  
             RTList<Event>* pVCAEventList = pEngine->pSynthesisEvents[Event::destination_vca];  
             RTList<Event>::Iterator itVCAEvent = pVCAEventList->first();  
             if (Delay) { // skip events that happened before this voice was triggered  
                 while (itVCAEvent && itVCAEvent->FragmentPos() <= Delay) ++itVCAEvent;  
             }  
             float crossfadevolume;  
             while (itVCAEvent) {  
                 RTList<Event>::Iterator itNextVCAEvent = itVCAEvent;  
                 ++itNextVCAEvent;  
   
                 // calculate the influence length of this event (in sample points)  
                 uint end = (itNextVCAEvent) ? itNextVCAEvent->FragmentPos() : Samples;  
   
                 crossfadevolume = CrossfadeAttenuation(itVCAEvent->Param.CC.Value);  
   
                 float effective_volume = crossfadevolume * this->Volume * pEngine->GlobalVolume;  
   
                 // apply volume value to the volume parameter sequence  
                 for (uint i = itVCAEvent->FragmentPos(); i < end; i++) {  
                     pEngine->pSynthesisParameters[Event::destination_vca][i] = effective_volume;  
                 }  
   
                 itVCAEvent = itNextVCAEvent;  
             }  
             if (!pVCAEventList->isEmpty()) this->CrossfadeVolume = crossfadevolume;  
417          }          }
418    
419          // process filter cutoff events          return ctrl;
420          {      }
             RTList<Event>* pCutoffEventList = pEngine->pSynthesisEvents[Event::destination_vcfc];  
             RTList<Event>::Iterator itCutoffEvent = pCutoffEventList->first();  
             if (Delay) { // skip events that happened before this voice was triggered  
                 while (itCutoffEvent && itCutoffEvent->FragmentPos() <= Delay) ++itCutoffEvent;  
             }  
             float cutoff;  
             while (itCutoffEvent) {  
                 RTList<Event>::Iterator itNextCutoffEvent = itCutoffEvent;  
                 ++itNextCutoffEvent;  
   
                 // calculate the influence length of this event (in sample points)  
                 uint end = (itNextCutoffEvent) ? itNextCutoffEvent->FragmentPos() : Samples;  
   
                 cutoff = exp((float) itCutoffEvent->Param.CC.Value * 0.00787402f * FILTER_CUTOFF_COEFF) * FILTER_CUTOFF_MAX - FILTER_CUTOFF_MIN;  
   
                 // apply cutoff frequency to the cutoff parameter sequence  
                 for (uint i = itCutoffEvent->FragmentPos(); i < end; i++) {  
                     pEngine->pSynthesisParameters[Event::destination_vcfc][i] = cutoff;  
                 }  
421    
422                  itCutoffEvent = itNextCutoffEvent;      uint8_t Voice::GetVCFResonanceCtrl() {
423              }          uint8_t ctrl;
424              if (!pCutoffEventList->isEmpty()) VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of parameter matrix next time          switch (pRegion->VCFResonanceController) {
425                case ::gig::vcf_res_ctrl_genpurpose3:
426                    ctrl = 18;
427                    break;
428                case ::gig::vcf_res_ctrl_genpurpose4:
429                    ctrl = 19;
430                    break;
431                case ::gig::vcf_res_ctrl_genpurpose5:
432                    ctrl = 80;
433                    break;
434                case ::gig::vcf_res_ctrl_genpurpose6:
435                    ctrl = 81;
436                    break;
437                case ::gig::vcf_res_ctrl_none:
438                default:
439                    ctrl = 0;
440          }          }
441    
442          // process filter resonance events          return ctrl;
443          {      }
             RTList<Event>* pResonanceEventList = pEngine->pSynthesisEvents[Event::destination_vcfr];  
             RTList<Event>::Iterator itResonanceEvent = pResonanceEventList->first();  
             if (Delay) { // skip events that happened before this voice was triggered  
                 while (itResonanceEvent && itResonanceEvent->FragmentPos() <= Delay) ++itResonanceEvent;  
             }  
             while (itResonanceEvent) {  
                 RTList<Event>::Iterator itNextResonanceEvent = itResonanceEvent;  
                 ++itNextResonanceEvent;  
444    
445                  // calculate the influence length of this event (in sample points)      void Voice::TriggerEG1(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
446                  uint end = (itNextResonanceEvent) ? itNextResonanceEvent->FragmentPos() : Samples;          EG1.trigger(pRegion->EG1PreAttack,
447                        pRegion->EG1Attack * egInfo.Attack,
448                        pRegion->EG1Hold,
449                        pRegion->EG1Decay1 * egInfo.Decay * velrelease,
450                        pRegion->EG1Decay2 * egInfo.Decay * velrelease,
451                        pRegion->EG1InfiniteSustain,
452                        pRegion->EG1Sustain,
453                        pRegion->EG1Release * egInfo.Release * velrelease,
454                        velocityAttenuation,
455                        sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
456        }
457    
458                  // convert absolute controller value to differential      void Voice::TriggerEG2(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
459                  int ctrldelta = itResonanceEvent->Param.CC.Value - VCFResonanceCtrl.value;          EG2.trigger(uint(RgnInfo.EG2PreAttack),
460                  VCFResonanceCtrl.value = itResonanceEvent->Param.CC.Value;                      RgnInfo.EG2Attack * egInfo.Attack,
461                        false,
462                        RgnInfo.EG2Decay1 * egInfo.Decay * velrelease,
463                        RgnInfo.EG2Decay2 * egInfo.Decay * velrelease,
464                        RgnInfo.EG2InfiniteSustain,
465                        uint(RgnInfo.EG2Sustain),
466                        RgnInfo.EG2Release * egInfo.Release * velrelease,
467                        velocityAttenuation,
468                        sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
469        }
470    
471                  float resonancedelta = (float) ctrldelta * 0.00787f; // 0.0..1.0      void Voice::ProcessGroupEvent(RTList<Event>::Iterator& itEvent) {
472            dmsg(4,("Voice %x processGroupEvents event type=%d", this, itEvent->Type));
473    
474                  // apply cutoff frequency to the cutoff parameter sequence          // TODO: The SustainPedal condition could be wrong, maybe the
475                  for (uint i = itResonanceEvent->FragmentPos(); i < end; i++) {          // check should be if this Voice is in release stage or is a
476                      pEngine->pSynthesisParameters[Event::destination_vcfr][i] += resonancedelta;          // release sample instead. Need to test this in GSt.
477                  }          if (itEvent->Param.Note.Key != MIDIKey ||
478                !GetGigEngineChannel()->SustainPedal) {
479                dmsg(4,("Voice %x - kill", this));
480    
481                  itResonanceEvent = itNextResonanceEvent;              // kill the voice fast
482              }              pEG1->enterFadeOutStage();
             if (!pResonanceEventList->isEmpty()) VCFResonanceCtrl.fvalue = pResonanceEventList->last()->Param.CC.Value * 0.00787f; // needed for initialization of parameter matrix next time  
483          }          }
484      }      }
485    
486      /**      void Voice::CalculateFadeOutCoeff(float FadeOutTime, float SampleRate) {
487       * Calculate all necessary, final biquad filter parameters.          EG1.CalculateFadeOutCoeff(FadeOutTime, SampleRate);
488       *      }
      * @param Samples - number of samples to be rendered in this audio fragment cycle  
      */  
     void Voice::CalculateBiquadParameters(uint Samples) {  
         biquad_param_t bqbase;  
         biquad_param_t bqmain;  
         float prev_cutoff = pEngine->pSynthesisParameters[Event::destination_vcfc][0];  
         float prev_res    = pEngine->pSynthesisParameters[Event::destination_vcfr][0];  
         FilterLeft.SetParameters(&bqbase, &bqmain, prev_cutoff, prev_res, pEngine->SampleRate);  
         FilterRight.SetParameters(&bqbase, &bqmain, prev_cutoff, prev_res, pEngine->SampleRate);  
         pEngine->pBasicFilterParameters[0] = bqbase;  
         pEngine->pMainFilterParameters[0]  = bqmain;  
   
         float* bq;  
         for (int i = 1; i < Samples; i++) {  
             // recalculate biquad parameters if cutoff or resonance differ from previous sample point  
             if (!(i & FILTER_UPDATE_MASK)) {  
                 if (pEngine->pSynthesisParameters[Event::destination_vcfr][i] != prev_res ||  
                     pEngine->pSynthesisParameters[Event::destination_vcfc][i] != prev_cutoff)  
                 {  
                     prev_cutoff = pEngine->pSynthesisParameters[Event::destination_vcfc][i];  
                     prev_res    = pEngine->pSynthesisParameters[Event::destination_vcfr][i];  
                     FilterLeft.SetParameters(&bqbase, &bqmain, prev_cutoff, prev_res, pEngine->SampleRate);  
                     FilterRight.SetParameters(&bqbase, &bqmain, prev_cutoff, prev_res, pEngine->SampleRate);  
                 }  
             }  
489    
490              //same as 'pEngine->pBasicFilterParameters[i] = bqbase;'      int Voice::CalculatePan(uint8_t pan) {
491              bq    = (float*) &pEngine->pBasicFilterParameters[i];          int p;
492              bq[0] = bqbase.a1;          // Gst behaviour: -64 and 63 are special cases
493              bq[1] = bqbase.a2;          if (RgnInfo.Pan == -64)     p = pan * 2 - 127;
494              bq[2] = bqbase.b0;          else if (RgnInfo.Pan == 63) p = pan * 2;
495              bq[3] = bqbase.b1;          else                        p = pan + RgnInfo.Pan;
             bq[4] = bqbase.b2;  
   
             // same as 'pEngine->pMainFilterParameters[i] = bqmain;'  
             bq    = (float*) &pEngine->pMainFilterParameters[i];  
             bq[0] = bqmain.a1;  
             bq[1] = bqmain.a2;  
             bq[2] = bqmain.b0;  
             bq[3] = bqmain.b1;  
             bq[4] = bqmain.b2;  
         }  
     }  
   
     /**  
      *  Synthesizes the current audio fragment for this voice.  
      *  
      *  @param Samples - number of sample points to be rendered in this audio  
      *                   fragment cycle  
      *  @param pSrc    - pointer to input sample data  
      *  @param Skip    - number of sample points to skip in output buffer  
      */  
     void Voice::Synthesize(uint Samples, sample_t* pSrc, int Skip) {  
         UpdateSynthesisMode();  
         SynthesizeFragment_Fn* f = (SynthesizeFragment_Fn*) SynthesizeFragmentFnPtr;  
         f(*this, Samples, pSrc, Skip);  
     }  
   
     /**  
      *  Determine the respective synthesis function for the given synthesis  
      *  mode.  
      */  
     void Voice::UpdateSynthesisMode() {  
         SynthesizeFragmentFnPtr = GetSynthesisFunction(SynthesisMode);  
     }  
   
     /**  
      *  Immediately kill the voice. This method should not be used to kill  
      *  a normal, active voice, because it doesn't take care of things like  
      *  fading down the volume level to avoid clicks and regular processing  
      *  until the kill event actually occured!  
      *  
      *  @see Kill()  
      */  
     void Voice::KillImmediately() {  
         if (DiskVoice && DiskStreamRef.State != Stream::state_unused) {  
             pDiskThread->OrderDeletionOfStream(&DiskStreamRef);  
         }  
         Reset();  
     }  
   
     /**  
      *  Kill the voice in regular sense. Let the voice render audio until  
      *  the kill event actually occured and then fade down the volume level  
      *  very quickly and let the voice die finally. Unlike a normal release  
      *  of a voice, a kill process cannot be cancalled and is therefore  
      *  usually used for voice stealing and key group conflicts.  
      *  
      *  @param itKillEvent - event which caused the voice to be killed  
      */  
     void Voice::Kill(Pool<Event>::Iterator& itKillEvent) {  
         //FIXME: just two sanity checks for debugging, can be removed  
         if (!itKillEvent) dmsg(1,("gig::Voice::Kill(): ERROR, !itKillEvent !!!\n"));  
         if (itKillEvent && !itKillEvent.isValid()) dmsg(1,("gig::Voice::Kill(): ERROR, itKillEvent invalid !!!\n"));  
496    
497          if (itTriggerEvent && itKillEvent->FragmentPos() <= itTriggerEvent->FragmentPos()) return;          if (p < 0) return 0;
498          this->itKillEvent = itKillEvent;          if (p > 127) return 127;
499            return p;
500      }      }
501    
502  }} // namespace LinuxSampler::gig  }} // namespace LinuxSampler::gig
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