/[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 368 by schoenebeck, Fri Feb 11 13:13:54 2005 UTC revision 2175 by persson, Mon Apr 25 08:12:36 2011 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 - 2011 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;  
         SynthesisMode = 0; // set all mode bits to 0 first  
         // select synthesis implementation (currently either pure C++ or MMX+SSE(1))  
         #if ARCH_X86  
         SYNTHESIS_MODE_SET_IMPLEMENTATION(SynthesisMode, Features::supportsMMX() && Features::supportsSSE());  
         #else  
         SYNTHESIS_MODE_SET_IMPLEMENTATION(SynthesisMode, false);  
         #endif  
         SYNTHESIS_MODE_SET_PROFILING(SynthesisMode, true);  
68    
69          FilterLeft.Reset();          return si;
         FilterRight.Reset();  
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.EG1PreAttack        = pRegion->EG1PreAttack;
80          dmsg(6,("Voice::SetEngine()\n"));          ri.EG1Attack           = pRegion->EG1Attack;
81            ri.EG1Hold             = pRegion->EG1Hold;
82            ri.EG1Decay1           = pRegion->EG1Decay1;
83            ri.EG1Decay2           = pRegion->EG1Decay2;
84            ri.EG1Sustain          = pRegion->EG1Sustain;
85            ri.EG1InfiniteSustain  = pRegion->EG1InfiniteSustain;
86            ri.EG1Release          = pRegion->EG1Release;
87    
88            ri.EG2PreAttack        = pRegion->EG2PreAttack;
89            ri.EG2Attack           = pRegion->EG2Attack;
90            ri.EG2Decay1           = pRegion->EG2Decay1;
91            ri.EG2Decay2           = pRegion->EG2Decay2;
92            ri.EG2Sustain          = pRegion->EG2Sustain;
93            ri.EG2InfiniteSustain  = pRegion->EG2InfiniteSustain;
94            ri.EG2Release          = pRegion->EG2Release;
95    
96            ri.EG3Attack     = pRegion->EG3Attack;
97            ri.EG3Depth      = pRegion->EG3Depth;
98            ri.VCFEnabled    = pRegion->VCFEnabled;
99            ri.VCFType       = Filter::vcf_type_t(pRegion->VCFType);
100            ri.VCFResonance  = pRegion->VCFResonance;
101    
102            ri.ReleaseTriggerDecay = 0.01053 * (256 >> pRegion->ReleaseTriggerDecay);
103    
104            return ri;
105      }      }
106    
107      /**      Voice::InstrumentInfo Voice::GetInstrumentInfo() {
108       *  Initializes and triggers the voice, a disk stream will be launched if          InstrumentInfo ii;
109       *  needed.          ii.FineTune = GetGigEngineChannel()->pInstrument->FineTune;
110       *          ii.PitchbendRange = GetGigEngineChannel()->pInstrument->PitchbendRange;
      *  @param itNoteOnEvent       - event that caused triggering of this voice  
      *  @param PitchBend           - MIDI detune factor (-8192 ... +8191)  
      *  @param pInstrument         - points to the loaded instrument which provides sample wave(s) and articulation data  
      *  @param iLayer              - layer number this voice refers to (only if this is a layered sound of course)  
      *  @param ReleaseTriggerVoice - if this new voice is a release trigger voice (optional, default = false)  
      *  @param VoiceStealing       - wether the voice is allowed to steal voices for further subvoices  
      *  @returns 0 on success, a value < 0 if the voice wasn't triggered  
      *           (either due to an error or e.g. because no region is  
      *           defined for the given key)  
      */  
     int Voice::Trigger(Pool<Event>::Iterator& itNoteOnEvent, int PitchBend, ::gig::Instrument* pInstrument, int iLayer, bool ReleaseTriggerVoice, bool VoiceStealing) {  
         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"));  
         }  
111    
112          Type            = type_normal;          return ii;
113          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) {  
             dmsg(4, ("gig::Voice: No Region defined for MIDI key %d\n", MIDIKey));  
             return -1;  
         }  
114    
115          KeyGroup = pRegion->KeyGroup;      double Voice::GetSampleAttenuation() {
116            return pRegion->SampleAttenuation;
117        }
118    
119          // get current dimension values to select the right dimension region      double Voice::GetVelocityAttenuation(uint8_t MIDIKeyVelocity) {
120          //FIXME: controller values for selecting the dimension region here are currently not sample accurate          return pRegion->GetVelocityAttenuation(MIDIKeyVelocity);
121          uint DimValues[8] = { 0 };      }
122          for (int i = pRegion->Dimensions - 1; i >= 0; i--) {  
123              switch (pRegion->pDimensionDefinitions[i].dimension) {      double Voice::GetVelocityRelease(uint8_t MIDIKeyVelocity) {
124                  case ::gig::dimension_samplechannel:          return pRegion->GetVelocityRelease(MIDIKeyVelocity);
125                      DimValues[i] = 0; //TODO: we currently ignore this dimension      }
126                      break;  
127                  case ::gig::dimension_layer:      void Voice::ProcessCCEvent(RTList<Event>::Iterator& itEvent) {
128                      DimValues[i] = iLayer;          if (itEvent->Type == Event::type_control_change && itEvent->Param.CC.Controller) { // if (valid) MIDI control change event
129                      // if this is the 1st layer then spawn further voices for all the other layers              if (pRegion->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&
130                      if (iLayer == 0)                  itEvent->Param.CC.Controller == pRegion->AttenuationController.controller_number) {
131                          for (int iNewLayer = 1; iNewLayer < pRegion->pDimensionDefinitions[i].zones; iNewLayer++)                  CrossfadeSmoother.update(AbstractEngine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.CC.Value)]);
                             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) pEngine->CurrentKeyDimension;  
                     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;  
132              }              }
133          }          }
134          pDimRgn = pRegion->GetDimensionRegionByValue(DimValues);      }
135    
136          pSample = pDimRgn->pSample; // sample won't change until the voice is finished      void Voice::ProcessCutoffEvent(RTList<Event>::Iterator& itEvent) {
137          if (!pSample || !pSample->SamplesTotal) return -1; // no need to continue if sample is silent          int ccvalue = itEvent->Param.CC.Value;
138            if (VCFCutoffCtrl.value == ccvalue) return;
139            VCFCutoffCtrl.value = ccvalue;
140            if (pRegion->VCFCutoffControllerInvert)  ccvalue = 127 - ccvalue;
141            if (ccvalue < pRegion->VCFVelocityScale) ccvalue = pRegion->VCFVelocityScale;
142            float cutoff = CutoffBase * float(ccvalue);
143            if (cutoff > 127.0f) cutoff = 127.0f;
144    
145          // select channel mode (mono or stereo)          VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of fFinalCutoff next time
146          SYNTHESIS_MODE_SET_CHANNELS(SynthesisMode, pSample->Channels == 2);          fFinalCutoff = cutoff;
147        }
148    
149          // get starting crossfade volume level      double Voice::CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity) {
150          switch (pDimRgn->AttenuationController.type) {          float crossfadeVolume;
151            switch (pRegion->AttenuationController.type) {
152              case ::gig::attenuation_ctrl_t::type_channelaftertouch:              case ::gig::attenuation_ctrl_t::type_channelaftertouch:
153                  CrossfadeVolume = 1.0f; //TODO: aftertouch not supported yet                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[128])];
154                  break;                  break;
155              case ::gig::attenuation_ctrl_t::type_velocity:              case ::gig::attenuation_ctrl_t::type_velocity:
156                  CrossfadeVolume = CrossfadeAttenuation(itNoteOnEvent->Param.Note.Velocity);                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(MIDIKeyVelocity)];
157                  break;                  break;
158              case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate              case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate
159                  CrossfadeVolume = CrossfadeAttenuation(pEngine->ControllerTable[pDimRgn->AttenuationController.controller_number]);                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[pRegion->AttenuationController.controller_number])];
160                  break;                  break;
161              case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined              case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined
162              default:              default:
163                  CrossfadeVolume = 1.0f;                  crossfadeVolume = 1.0f;
         }  
   
         PanLeft  = 1.0f - float(RTMath::Max(pDimRgn->Pan, 0)) /  63.0f;  
         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;  
   
             if (pDiskThread->OrderNewStream(&DiskStreamRef, pSample, MaxRAMPos, !RAMLoop) < 0) {  
                 dmsg(1,("Disk stream order failed!\n"));  
                 KillImmediately();  
                 return -1;  
             }  
             dmsg(4,("Disk voice launched (cached samples: %d, total Samples: %d, MaxRAMPos: %d, RAMLooping: %s)\n", cachedsamples, pSample->SamplesTotal, MaxRAMPos, (RAMLoop) ? "yes" : "no"));  
         }  
         else { // RAM only voice  
             MaxRAMPos = cachedsamples;  
             if (pSample->Loops) {  
                 RAMLoop        = true;  
                 LoopCyclesLeft = pSample->LoopPlayCount;  
             }  
             else RAMLoop = false;  
             dmsg(4,("RAM only voice launched (Looping: %s)\n", (RAMLoop) ? "yes" : "no"));  
164          }          }
165    
166            return crossfadeVolume;
167        }
168    
169          // calculate initial pitch value      double Voice::GetEG1ControllerValue(uint8_t MIDIKeyVelocity) {
170          {          double eg1controllervalue = 0;
171              double pitchbasecents = pDimRgn->FineTune + (int) pEngine->ScaleTuning[MIDIKey % 12];          switch (pRegion->EG1Controller.type) {
172              if (pDimRgn->PitchTrack) pitchbasecents += (MIDIKey - (int) pDimRgn->UnityNote) * 100;              case ::gig::eg1_ctrl_t::type_none: // no controller defined
173              this->PitchBase = RTMath::CentsToFreqRatio(pitchbasecents) * (double(pSample->SamplesPerSecond) / double(pEngine->pAudioOutputDevice->SampleRate()));                  eg1controllervalue = 0;
174              this->PitchBend = RTMath::CentsToFreqRatio(((double) PitchBend / 8192.0) * 200.0); // pitchbend wheel +-2 semitones = 200 cents                  break;
175                case ::gig::eg1_ctrl_t::type_channelaftertouch:
176                    eg1controllervalue = GetGigEngineChannel()->ControllerTable[128];
177                    break;
178                case ::gig::eg1_ctrl_t::type_velocity:
179                    eg1controllervalue = MIDIKeyVelocity;
180                    break;
181                case ::gig::eg1_ctrl_t::type_controlchange: // MIDI control change controller
182                    eg1controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG1Controller.controller_number];
183                    break;
184          }          }
185            if (pRegion->EG1ControllerInvert) eg1controllervalue = 127 - eg1controllervalue;
186    
187          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)          return eg1controllervalue;
188        }
         // 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        Voice::EGInfo Voice::CalculateEG1ControllerInfluence(double eg1ControllerValue) {
191            EGInfo eg;
192            // (eg1attack is different from the others)
193            eg.Attack  = (pRegion->EG1ControllerAttackInfluence)  ?
194                1 + 0.031 * (double) (pRegion->EG1ControllerAttackInfluence == 1 ?
195                                      1 : 1 << pRegion->EG1ControllerAttackInfluence) * eg1ControllerValue : 1.0;
196            eg.Decay   = (pRegion->EG1ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerDecayInfluence)   * eg1ControllerValue : 1.0;
197            eg.Release = (pRegion->EG1ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerReleaseInfluence) * eg1ControllerValue : 1.0;
198    
199          // setup EG 2 (VCF Cutoff EG)          return eg;
200          {      }
             // 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;  
201    
202              // calculate influence of EG2 controller on EG2's parameters (TODO: needs to be fine tuned)      double Voice::GetEG2ControllerValue(uint8_t MIDIKeyVelocity) {
203              double eg2attack  = (pDimRgn->EG2ControllerAttackInfluence)  ? 0.0001 * (double) (1 << pDimRgn->EG2ControllerAttackInfluence)  * eg2controllervalue : 0.0;          double eg2controllervalue = 0;
204              double eg2decay   = (pDimRgn->EG2ControllerDecayInfluence)   ? 0.0001 * (double) (1 << pDimRgn->EG2ControllerDecayInfluence)   * eg2controllervalue : 0.0;          switch (pRegion->EG2Controller.type) {
205              double eg2release = (pDimRgn->EG2ControllerReleaseInfluence) ? 0.0001 * (double) (1 << pDimRgn->EG2ControllerReleaseInfluence) * eg2controllervalue : 0.0;              case ::gig::eg2_ctrl_t::type_none: // no controller defined
206                    eg2controllervalue = 0;
207              pEG2->Trigger(pDimRgn->EG2PreAttack,                  break;
208                            pDimRgn->EG2Attack + eg2attack,              case ::gig::eg2_ctrl_t::type_channelaftertouch:
209                            false,                  eg2controllervalue = GetGigEngineChannel()->ControllerTable[128];
210                            pSample->LoopStart,                  break;
211                            pDimRgn->EG2Decay1 + eg2decay,              case ::gig::eg2_ctrl_t::type_velocity:
212                            pDimRgn->EG2Decay2 + eg2decay,                  eg2controllervalue = MIDIKeyVelocity;
213                            pDimRgn->EG2InfiniteSustain,                  break;
214                            pDimRgn->EG2Sustain,              case ::gig::eg2_ctrl_t::type_controlchange: // MIDI control change controller
215                            pDimRgn->EG2Release + eg2release,                  eg2controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG2Controller.controller_number];
216                            Delay);                  break;
217          }          }
218            if (pRegion->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue;
219    
220            return eg2controllervalue;
221        }
222    
223          // setup EG 3 (VCO EG)      Voice::EGInfo Voice::CalculateEG2ControllerInfluence(double eg2ControllerValue) {
224          {          EGInfo eg;
225            double eg3depth = RTMath::CentsToFreqRatio(pDimRgn->EG3Depth);          eg.Attack  = (pRegion->EG2ControllerAttackInfluence)  ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerAttackInfluence)  * eg2ControllerValue : 1.0;
226            pEG3->Trigger(eg3depth, pDimRgn->EG3Attack, Delay);          eg.Decay   = (pRegion->EG2ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerDecayInfluence)   * eg2ControllerValue : 1.0;
227          }          eg.Release = (pRegion->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerReleaseInfluence) * eg2ControllerValue : 1.0;
228    
229            return eg;
230        }
231    
232          // setup LFO 1 (VCA LFO)      void Voice::InitLFO1() {
233          {          uint16_t lfo1_internal_depth;
234              uint16_t lfo1_internal_depth;          switch (pRegion->LFO1Controller) {
235              switch (pDimRgn->LFO1Controller) {              case ::gig::lfo1_ctrl_internal:
236                  case ::gig::lfo1_ctrl_internal:                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
237                      lfo1_internal_depth  = pDimRgn->LFO1InternalDepth;                  pLFO1->ExtController = 0; // no external controller
238                      pLFO1->ExtController = 0; // no external controller                  bLFO1Enabled         = (lfo1_internal_depth > 0);
239                      break;                  break;
240                  case ::gig::lfo1_ctrl_modwheel:              case ::gig::lfo1_ctrl_modwheel:
241                      lfo1_internal_depth  = 0;                  lfo1_internal_depth  = 0;
242                      pLFO1->ExtController = 1; // MIDI controller 1                  pLFO1->ExtController = 1; // MIDI controller 1
243                      break;                  bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
244                  case ::gig::lfo1_ctrl_breath:                  break;
245                      lfo1_internal_depth  = 0;              case ::gig::lfo1_ctrl_breath:
246                      pLFO1->ExtController = 2; // MIDI controller 2                  lfo1_internal_depth  = 0;
247                      break;                  pLFO1->ExtController = 2; // MIDI controller 2
248                  case ::gig::lfo1_ctrl_internal_modwheel:                  bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
249                      lfo1_internal_depth  = pDimRgn->LFO1InternalDepth;                  break;
250                      pLFO1->ExtController = 1; // MIDI controller 1              case ::gig::lfo1_ctrl_internal_modwheel:
251                      break;                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
252                  case ::gig::lfo1_ctrl_internal_breath:                  pLFO1->ExtController = 1; // MIDI controller 1
253                      lfo1_internal_depth  = pDimRgn->LFO1InternalDepth;                  bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
254                      pLFO1->ExtController = 2; // MIDI controller 2                  break;
255                      break;              case ::gig::lfo1_ctrl_internal_breath:
256                  default:                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
257                      lfo1_internal_depth  = 0;                  pLFO1->ExtController = 2; // MIDI controller 2
258                      pLFO1->ExtController = 0; // no external controller                  bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
259              }                  break;
260              pLFO1->Trigger(pDimRgn->LFO1Frequency,              default:
261                            lfo1_internal_depth,                  lfo1_internal_depth  = 0;
262                            pDimRgn->LFO1ControlDepth,                  pLFO1->ExtController = 0; // no external controller
263                            pEngine->ControllerTable[pLFO1->ExtController],                  bLFO1Enabled         = false;
264                            pDimRgn->LFO1FlipPhase,          }
265                            pEngine->SampleRate,          if (bLFO1Enabled) {
266                            Delay);              pLFO1->trigger(pRegion->LFO1Frequency,
267                               start_level_min,
268                               lfo1_internal_depth,
269                               pRegion->LFO1ControlDepth,
270                               pRegion->LFO1FlipPhase,
271                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
272                pLFO1->update(pLFO1->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO1->ExtController] : 0);
273          }          }
274        }
275    
276        void Voice::InitLFO2() {
277          // setup LFO 2 (VCF Cutoff LFO)          uint16_t lfo2_internal_depth;
278          {          switch (pRegion->LFO2Controller) {
279              uint16_t lfo2_internal_depth;              case ::gig::lfo2_ctrl_internal:
280              switch (pDimRgn->LFO2Controller) {                  lfo2_internal_depth  = pRegion->LFO2InternalDepth;
281                  case ::gig::lfo2_ctrl_internal:                  pLFO2->ExtController = 0; // no external controller
282                      lfo2_internal_depth  = pDimRgn->LFO2InternalDepth;                  bLFO2Enabled         = (lfo2_internal_depth > 0);
283                      pLFO2->ExtController = 0; // no external controller                  break;
284                      break;              case ::gig::lfo2_ctrl_modwheel:
285                  case ::gig::lfo2_ctrl_modwheel:                  lfo2_internal_depth  = 0;
286                      lfo2_internal_depth  = 0;                  pLFO2->ExtController = 1; // MIDI controller 1
287                      pLFO2->ExtController = 1; // MIDI controller 1                  bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
288                      break;                  break;
289                  case ::gig::lfo2_ctrl_foot:              case ::gig::lfo2_ctrl_foot:
290                      lfo2_internal_depth  = 0;                  lfo2_internal_depth  = 0;
291                      pLFO2->ExtController = 4; // MIDI controller 4                  pLFO2->ExtController = 4; // MIDI controller 4
292                      break;                  bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
293                  case ::gig::lfo2_ctrl_internal_modwheel:                  break;
294                      lfo2_internal_depth  = pDimRgn->LFO2InternalDepth;              case ::gig::lfo2_ctrl_internal_modwheel:
295                      pLFO2->ExtController = 1; // MIDI controller 1                  lfo2_internal_depth  = pRegion->LFO2InternalDepth;
296                      break;                  pLFO2->ExtController = 1; // MIDI controller 1
297                  case ::gig::lfo2_ctrl_internal_foot:                  bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
298                      lfo2_internal_depth  = pDimRgn->LFO2InternalDepth;                  break;
299                      pLFO2->ExtController = 4; // MIDI controller 4              case ::gig::lfo2_ctrl_internal_foot:
300                      break;                  lfo2_internal_depth  = pRegion->LFO2InternalDepth;
301                  default:                  pLFO2->ExtController = 4; // MIDI controller 4
302                      lfo2_internal_depth  = 0;                  bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
303                      pLFO2->ExtController = 0; // no external controller                  break;
304              }              default:
305              pLFO2->Trigger(pDimRgn->LFO2Frequency,                  lfo2_internal_depth  = 0;
306                            lfo2_internal_depth,                  pLFO2->ExtController = 0; // no external controller
307                            pDimRgn->LFO2ControlDepth,                  bLFO2Enabled         = false;
308                            pEngine->ControllerTable[pLFO2->ExtController],          }
309                            pDimRgn->LFO2FlipPhase,          if (bLFO2Enabled) {
310                            pEngine->SampleRate,              pLFO2->trigger(pRegion->LFO2Frequency,
311                            Delay);                             start_level_max,
312                               lfo2_internal_depth,
313                               pRegion->LFO2ControlDepth,
314                               pRegion->LFO2FlipPhase,
315                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
316                pLFO2->update(pLFO2->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO2->ExtController] : 0);
317          }          }
318        }
319    
320        void Voice::InitLFO3() {
321          // setup LFO 3 (VCO LFO)          uint16_t lfo3_internal_depth;
322          {          switch (pRegion->LFO3Controller) {
323              uint16_t lfo3_internal_depth;              case ::gig::lfo3_ctrl_internal:
324              switch (pDimRgn->LFO3Controller) {                  lfo3_internal_depth  = pRegion->LFO3InternalDepth;
325                  case ::gig::lfo3_ctrl_internal:                  pLFO3->ExtController = 0; // no external controller
326                      lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;                  bLFO3Enabled         = (lfo3_internal_depth > 0);
327                      pLFO3->ExtController = 0; // no external controller                  break;
328                      break;              case ::gig::lfo3_ctrl_modwheel:
329                  case ::gig::lfo3_ctrl_modwheel:                  lfo3_internal_depth  = 0;
330                      lfo3_internal_depth  = 0;                  pLFO3->ExtController = 1; // MIDI controller 1
331                      pLFO3->ExtController = 1; // MIDI controller 1                  bLFO3Enabled         = (pRegion->LFO3ControlDepth > 0);
332                      break;                  break;
333                  case ::gig::lfo3_ctrl_aftertouch:              case ::gig::lfo3_ctrl_aftertouch:
334                      lfo3_internal_depth  = 0;                  lfo3_internal_depth  = 0;
335                      pLFO3->ExtController = 0; // TODO: aftertouch not implemented yet                  pLFO3->ExtController = 128;
336                      break;                  bLFO3Enabled         = true;
337                  case ::gig::lfo3_ctrl_internal_modwheel:                  break;
338                      lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;              case ::gig::lfo3_ctrl_internal_modwheel:
339                      pLFO3->ExtController = 1; // MIDI controller 1                  lfo3_internal_depth  = pRegion->LFO3InternalDepth;
340                      break;                  pLFO3->ExtController = 1; // MIDI controller 1
341                  case ::gig::lfo3_ctrl_internal_aftertouch:                  bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
342                      lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;                  break;
343                      pLFO1->ExtController = 0; // TODO: aftertouch not implemented yet              case ::gig::lfo3_ctrl_internal_aftertouch:
344                      break;                  lfo3_internal_depth  = pRegion->LFO3InternalDepth;
345                  default:                  pLFO3->ExtController = 128;
346                      lfo3_internal_depth  = 0;                  bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
347                      pLFO3->ExtController = 0; // no external controller                  break;
348              }              default:
349              pLFO3->Trigger(pDimRgn->LFO3Frequency,                  lfo3_internal_depth  = 0;
350                            lfo3_internal_depth,                  pLFO3->ExtController = 0; // no external controller
351                            pDimRgn->LFO3ControlDepth,                  bLFO3Enabled         = false;
352                            pEngine->ControllerTable[pLFO3->ExtController],          }
353                            false,          if (bLFO3Enabled) {
354                            pEngine->SampleRate,              pLFO3->trigger(pRegion->LFO3Frequency,
355                            Delay);                             start_level_mid,
356                               lfo3_internal_depth,
357                               pRegion->LFO3ControlDepth,
358                               false,
359                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
360                pLFO3->update(pLFO3->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO3->ExtController] : 0);
361          }          }
362        }
363    
364        float Voice::CalculateCutoffBase(uint8_t MIDIKeyVelocity) {
365          #if FORCE_FILTER_USAGE          float cutoff = pRegion->GetVelocityCutoff(MIDIKeyVelocity);
366          const bool bUseFilter = true;          if (pRegion->VCFKeyboardTracking) {
367          #else // use filter only if instrument file told so              cutoff *= RTMath::CentsToFreqRatioUnlimited((MIDIKey - pRegion->VCFKeyboardTrackingBreakpoint) * 100);
368          const bool bUseFilter = pDimRgn->VCFEnabled;          }
369          #endif // FORCE_FILTER_USAGE          return cutoff;
370          SYNTHESIS_MODE_SET_FILTER(SynthesisMode, bUseFilter);      }
371          if (bUseFilter) {  
372              #ifdef OVERRIDE_FILTER_CUTOFF_CTRL      float Voice::CalculateFinalCutoff(float cutoffBase) {
373              VCFCutoffCtrl.controller = OVERRIDE_FILTER_CUTOFF_CTRL;          int cvalue;
374              #else // use the one defined in the instrument file          if (VCFCutoffCtrl.controller) {
375              switch (pDimRgn->VCFCutoffController) {              cvalue = GetGigEngineChannel()->ControllerTable[VCFCutoffCtrl.controller];
376                  case ::gig::vcf_cutoff_ctrl_modwheel:              if (pRegion->VCFCutoffControllerInvert) cvalue = 127 - cvalue;
377                      VCFCutoffCtrl.controller = 1;              // VCFVelocityScale in this case means Minimum cutoff
378                      break;              if (cvalue < pRegion->VCFVelocityScale) cvalue = pRegion->VCFVelocityScale;
                 case ::gig::vcf_cutoff_ctrl_effect1:  
                     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;  
379          }          }
380          else {          else {
381              VCFCutoffCtrl.controller    = 0;              cvalue = pRegion->VCFCutoff;
             VCFResonanceCtrl.controller = 0;  
382          }          }
383            float fco = cutoffBase * float(cvalue);
384            if (fco > 127.0f) fco = 127.0f;
385    
386          return 0; // success          return fco;
387      }      }
388    
389      /**      uint8_t Voice::GetVCFCutoffCtrl() {
390       *  Renders the audio data for this voice for the current audio fragment.          uint8_t ctrl;
391       *  The sample input data can either come from RAM (cached sample or sample          switch (pRegion->VCFCutoffController) {
392       *  part) or directly from disk. The output signal will be rendered by              case ::gig::vcf_cutoff_ctrl_modwheel:
393       *  resampling / interpolation. If this voice is a disk streaming voice and                  ctrl = 1;
      *  the voice completely played back the cached RAM part of the sample, it  
      *  will automatically switch to disk playback for the next RenderAudio()  
      *  call.  
      *  
      *  @param Samples - number of samples to be rendered in this audio fragment cycle  
      */  
     void Voice::Render(uint Samples) {  
   
         // select default values for synthesis mode bits  
         SYNTHESIS_MODE_SET_INTERPOLATE(SynthesisMode, (PitchBase * PitchBend) != 1.0f);  
         SYNTHESIS_MODE_SET_CONSTPITCH(SynthesisMode, true);  
         SYNTHESIS_MODE_SET_LOOP(SynthesisMode, false);  
   
         // Reset the synthesis parameter matrix  
   
         pEngine->ResetSynthesisParameters(Event::destination_vca, this->Volume * this->CrossfadeVolume * pEngine->GlobalVolume);  
         pEngine->ResetSynthesisParameters(Event::destination_vco, this->PitchBase);  
         pEngine->ResetSynthesisParameters(Event::destination_vcfc, VCFCutoffCtrl.fvalue);  
         pEngine->ResetSynthesisParameters(Event::destination_vcfr, VCFResonanceCtrl.fvalue);  
   
         // Apply events to the synthesis parameter matrix  
         ProcessEvents(Samples);  
   
         // Let all modulators write their parameter changes to the synthesis parameter matrix for the current audio fragment  
         pEG1->Process(Samples, pEngine->pMIDIKeyInfo[MIDIKey].pEvents, itTriggerEvent, this->Pos, this->PitchBase * this->PitchBend, itKillEvent);  
         pEG2->Process(Samples, pEngine->pMIDIKeyInfo[MIDIKey].pEvents, itTriggerEvent, this->Pos, this->PitchBase * this->PitchBend);  
         if (pEG3->Process(Samples)) { // if pitch EG is active  
             SYNTHESIS_MODE_SET_INTERPOLATE(SynthesisMode, true);  
             SYNTHESIS_MODE_SET_CONSTPITCH(SynthesisMode, false);  
         }  
         pLFO1->Process(Samples);  
         pLFO2->Process(Samples);  
         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);  
                         RealSampleWordsLeftToRead = -1; // -1 means no silence has been added yet  
                     }  
   
                     const int sampleWordsLeftToRead = DiskStreamRef.pStream->GetReadSpace();  
   
                     // add silence sample at the end if we reached the end of the stream (for the interpolator)  
                     if (DiskStreamRef.State == Stream::state_end) {  
                         const int maxSampleWordsPerCycle = (pEngine->MaxSamplesPerCycle << MAX_PITCH) * pSample->Channels + 6; // +6 for the interpolator algorithm  
                         if (sampleWordsLeftToRead <= maxSampleWordsPerCycle) {  
                             // remember how many sample words there are before any silence has been added  
                             if (RealSampleWordsLeftToRead < 0) RealSampleWordsLeftToRead = sampleWordsLeftToRead;  
                             DiskStreamRef.pStream->WriteSilence(maxSampleWordsPerCycle - sampleWordsLeftToRead);  
                         }  
                     }  
   
                     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);  
   
                     const int iPos = (int) Pos;  
                     const int readSampleWords = iPos * pSample->Channels; // amount of sample words actually been read  
                     DiskStreamRef.pStream->IncrementReadPos(readSampleWords);  
                     Pos -= iPos; // just keep fractional part of Pos  
   
                     // change state of voice to 'end' if we really reached the end of the sample data  
                     if (RealSampleWordsLeftToRead >= 0) {  
                         RealSampleWordsLeftToRead -= readSampleWords;  
                         if (RealSampleWordsLeftToRead <= 0) this->PlaybackState = playback_state_end;  
                     }  
                 }  
394                  break;                  break;
395                case ::gig::vcf_cutoff_ctrl_effect1:
396              case playback_state_end:                  ctrl = 12;
397                  std::cerr << "gig::Voice::Render(): entered with playback_state_end, this is a bug!\n" << std::flush;                  break;
398                case ::gig::vcf_cutoff_ctrl_effect2:
399                    ctrl = 13;
400                    break;
401                case ::gig::vcf_cutoff_ctrl_breath:
402                    ctrl = 2;
403                    break;
404                case ::gig::vcf_cutoff_ctrl_foot:
405                    ctrl = 4;
406                    break;
407                case ::gig::vcf_cutoff_ctrl_sustainpedal:
408                    ctrl = 64;
409                    break;
410                case ::gig::vcf_cutoff_ctrl_softpedal:
411                    ctrl = 67;
412                    break;
413                case ::gig::vcf_cutoff_ctrl_genpurpose7:
414                    ctrl = 82;
415                    break;
416                case ::gig::vcf_cutoff_ctrl_genpurpose8:
417                    ctrl = 83;
418                    break;
419                case ::gig::vcf_cutoff_ctrl_aftertouch:
420                    ctrl = 128;
421                    break;
422                case ::gig::vcf_cutoff_ctrl_none:
423                default:
424                    ctrl = 0;
425                  break;                  break;
426          }          }
427    
428          // Reset synthesis event lists (except VCO, as VCO events apply channel wide currently)          return ctrl;
         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;  
         }  
   
         // process filter cutoff events  
         {  
             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;  
                 }  
   
                 itCutoffEvent = itNextCutoffEvent;  
             }  
             if (!pCutoffEventList->isEmpty()) VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of parameter matrix next time  
         }  
   
         // process filter resonance events  
         {  
             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;  
   
                 // calculate the influence length of this event (in sample points)  
                 uint end = (itNextResonanceEvent) ? itNextResonanceEvent->FragmentPos() : Samples;  
   
                 // convert absolute controller value to differential  
                 int ctrldelta = itResonanceEvent->Param.CC.Value - VCFResonanceCtrl.value;  
                 VCFResonanceCtrl.value = itResonanceEvent->Param.CC.Value;  
   
                 float resonancedelta = (float) ctrldelta * 0.00787f; // 0.0..1.0  
   
                 // apply cutoff frequency to the cutoff parameter sequence  
                 for (uint i = itResonanceEvent->FragmentPos(); i < end; i++) {  
                     pEngine->pSynthesisParameters[Event::destination_vcfr][i] += resonancedelta;  
                 }  
   
                 itResonanceEvent = itNextResonanceEvent;  
             }  
             if (!pResonanceEventList->isEmpty()) VCFResonanceCtrl.fvalue = pResonanceEventList->last()->Param.CC.Value * 0.00787f; // needed for initialization of parameter matrix next time  
         }  
429      }      }
430    
431      /**      uint8_t Voice::GetVCFResonanceCtrl() {
432       * Calculate all necessary, final biquad filter parameters.          uint8_t ctrl;
433       *          switch (pRegion->VCFResonanceController) {
434       * @param Samples - number of samples to be rendered in this audio fragment cycle              case ::gig::vcf_res_ctrl_genpurpose3:
435       */                  ctrl = 18;
436      void Voice::CalculateBiquadParameters(uint Samples) {                  break;
437          biquad_param_t bqbase;              case ::gig::vcf_res_ctrl_genpurpose4:
438          biquad_param_t bqmain;                  ctrl = 19;
439          float prev_cutoff = pEngine->pSynthesisParameters[Event::destination_vcfc][0];                  break;
440          float prev_res    = pEngine->pSynthesisParameters[Event::destination_vcfr][0];              case ::gig::vcf_res_ctrl_genpurpose5:
441          FilterLeft.SetParameters( &bqbase, &bqmain, prev_cutoff + FILTER_CUTOFF_MIN, prev_res, pEngine->SampleRate);                  ctrl = 80;
442          FilterRight.SetParameters(&bqbase, &bqmain, prev_cutoff + FILTER_CUTOFF_MIN, prev_res, pEngine->SampleRate);                  break;
443          pEngine->pBasicFilterParameters[0] = bqbase;              case ::gig::vcf_res_ctrl_genpurpose6:
444          pEngine->pMainFilterParameters[0]  = bqmain;                  ctrl = 81;
445                    break;
446          float* bq;              case ::gig::vcf_res_ctrl_none:
447          for (int i = 1; i < Samples; i++) {              default:
448              // recalculate biquad parameters if cutoff or resonance differ from previous sample point                  ctrl = 0;
             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 + FILTER_CUTOFF_MIN, prev_res, pEngine->SampleRate);  
                     FilterRight.SetParameters(&bqbase, &bqmain, prev_cutoff + FILTER_CUTOFF_MIN, prev_res, pEngine->SampleRate);  
                 }  
             }  
   
             //same as 'pEngine->pBasicFilterParameters[i] = bqbase;'  
             bq    = (float*) &pEngine->pBasicFilterParameters[i];  
             bq[0] = bqbase.b0;  
             bq[1] = bqbase.b1;  
             bq[2] = bqbase.b2;  
             bq[3] = bqbase.a1;  
             bq[4] = bqbase.a2;  
   
             // same as 'pEngine->pMainFilterParameters[i] = bqmain;'  
             bq    = (float*) &pEngine->pMainFilterParameters[i];  
             bq[0] = bqmain.b0;  
             bq[1] = bqmain.b1;  
             bq[2] = bqmain.b2;  
             bq[3] = bqmain.a1;  
             bq[4] = bqmain.a2;  
449          }          }
     }  
450    
451      /**          return ctrl;
      *  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, uint Skip) {  
         RunSynthesisFunction(SynthesisMode, *this, Samples, pSrc, Skip);  
     }  
   
     /**  
      *  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();  
452      }      }
453    
454      /**      void Voice::TriggerEG1(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
455       *  Kill the voice in regular sense. Let the voice render audio until          EG1.trigger(uint(RgnInfo.EG1PreAttack),
456       *  the kill event actually occured and then fade down the volume level                      RgnInfo.EG1Attack * egInfo.Attack,
457       *  very quickly and let the voice die finally. Unlike a normal release                      RgnInfo.EG1Hold,
458       *  of a voice, a kill process cannot be cancalled and is therefore                      RgnInfo.EG1Decay1 * egInfo.Decay * velrelease,
459       *  usually used for voice stealing and key group conflicts.                      RgnInfo.EG1Decay2 * egInfo.Decay * velrelease,
460       *                      RgnInfo.EG1InfiniteSustain,
461       *  @param itKillEvent - event which caused the voice to be killed                      uint(RgnInfo.EG1Sustain),
462       */                      RgnInfo.EG1Release * egInfo.Release * velrelease,
463      void Voice::Kill(Pool<Event>::Iterator& itKillEvent) {                      velocityAttenuation,
464          //FIXME: just two sanity checks for debugging, can be removed                      sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
465          if (!itKillEvent) dmsg(1,("gig::Voice::Kill(): ERROR, !itKillEvent !!!\n"));      }
466          if (itKillEvent && !itKillEvent.isValid()) dmsg(1,("gig::Voice::Kill(): ERROR, itKillEvent invalid !!!\n"));  
467        void Voice::TriggerEG2(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
468            EG2.trigger(uint(RgnInfo.EG2PreAttack),
469                        RgnInfo.EG2Attack * egInfo.Attack,
470                        false,
471                        RgnInfo.EG2Decay1 * egInfo.Decay * velrelease,
472                        RgnInfo.EG2Decay2 * egInfo.Decay * velrelease,
473                        RgnInfo.EG2InfiniteSustain,
474                        uint(RgnInfo.EG2Sustain),
475                        RgnInfo.EG2Release * egInfo.Release * velrelease,
476                        velocityAttenuation,
477                        sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
478        }
479    
480        void Voice::ProcessGroupEvent(RTList<Event>::Iterator& itEvent) {
481            dmsg(4,("Voice %x processGroupEvents event type=%d", this, itEvent->Type));
482    
483            // TODO: The SustainPedal condition could be wrong, maybe the
484            // check should be if this Voice is in release stage or is a
485            // release sample instead. Need to test this in GSt.
486            if (itEvent->Param.Note.Key != MIDIKey ||
487                !GetGigEngineChannel()->SustainPedal) {
488                dmsg(4,("Voice %x - kill", this));
489    
490          if (itTriggerEvent && itKillEvent->FragmentPos() <= itTriggerEvent->FragmentPos()) return;              // kill the voice fast
491          this->itKillEvent = itKillEvent;              pEG1->enterFadeOutStage();
492            }
493      }      }
494    
495  }} // namespace LinuxSampler::gig  }} // namespace LinuxSampler::gig
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