/[svn]/linuxsampler/trunk/src/engines/gig/Voice.cpp
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revision 407 by persson, Wed Feb 23 19:14:14 2005 UTC revision 2408 by persson, Sat Feb 2 08:22:49 2013 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 - 2013 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.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       *  Initializes and triggers the voice, a disk stream will be launched if          InstrumentInfo ii;
100       *  needed.          ii.FineTune = GetGigEngineChannel()->pInstrument->FineTune;
101       *          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"));  
         }  
102    
103          Type            = type_normal;          return ii;
104          MIDIKey         = itNoteOnEvent->Param.Note.Key;      }
105          pRegion         = pInstrument->GetRegion(MIDIKey);  
106          PlaybackState   = playback_state_ram; // we always start playback from RAM cache and switch then to disk if needed      double Voice::GetSampleAttenuation() {
107          Delay           = itNoteOnEvent->FragmentPos();          return pRegion->SampleAttenuation;
108          itTriggerEvent  = itNoteOnEvent;      }
109          itKillEvent     = Pool<Event>::Iterator();  
110          itChildVoice    = Pool<Voice>::Iterator();      double Voice::GetVelocityAttenuation(uint8_t MIDIKeyVelocity) {
111            return pRegion->GetVelocityAttenuation(MIDIKeyVelocity);
112          if (!pRegion) {      }
             dmsg(4, ("gig::Voice: No Region defined for MIDI key %d\n", MIDIKey));  
             return -1;  
         }  
113    
114          KeyGroup = pRegion->KeyGroup;      double Voice::GetVelocityRelease(uint8_t MIDIKeyVelocity) {
115            return pRegion->GetVelocityRelease(MIDIKeyVelocity);
116        }
117    
118          // get current dimension values to select the right dimension region      void Voice::ProcessCCEvent(RTList<Event>::Iterator& itEvent) {
119          //FIXME: controller values for selecting the dimension region here are currently not sample accurate          if (itEvent->Type == Event::type_control_change && itEvent->Param.CC.Controller) { // if (valid) MIDI control change event
120          uint DimValues[8] = { 0 };              if (pRegion->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&
121          for (int i = pRegion->Dimensions - 1; i >= 0; i--) {                  itEvent->Param.CC.Controller == pRegion->AttenuationController.controller_number) {
122              switch (pRegion->pDimensionDefinitions[i].dimension) {                  CrossfadeSmoother.update(AbstractEngine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.CC.Value)]);
                 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) 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;  
123              }              }
124          }          }
125          pDimRgn = pRegion->GetDimensionRegionByValue(DimValues);      }
126    
127          pSample = pDimRgn->pSample; // sample won't change until the voice is finished      void Voice::ProcessCutoffEvent(RTList<Event>::Iterator& itEvent) {
128          if (!pSample || !pSample->SamplesTotal) return -1; // no need to continue if sample is silent          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;  
   
             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"));  
         }  
   
   
         // calculate initial pitch value  
         {  
             double pitchbasecents = pDimRgn->FineTune + (int) pEngine->ScaleTuning[MIDIKey % 12];  
             if (pDimRgn->PitchTrack) pitchbasecents += (MIDIKey - (int) pDimRgn->UnityNote) * 100;  
             this->PitchBase = RTMath::CentsToFreqRatio(pitchbasecents) * (double(pSample->SamplesPerSecond) / double(pEngine->pAudioOutputDevice->SampleRate()));  
             this->PitchBend = RTMath::CentsToFreqRatio(((double) PitchBend / 8192.0) * 200.0); // pitchbend wheel +-2 semitones = 200 cents  
         }  
   
         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)  
   
         Volume *= pDimRgn->SampleAttenuation;  
   
         // 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;  
159    
160              // calculate influence of EG1 controller on EG1's parameters (TODO: needs to be fine tuned)      double Voice::GetEG1ControllerValue(uint8_t MIDIKeyVelocity) {
161              double eg1attack  = (pDimRgn->EG1ControllerAttackInfluence)  ? 0.0001 * (double) (1 << pDimRgn->EG1ControllerAttackInfluence)  * eg1controllervalue : 0.0;          double eg1controllervalue = 0;
162              double eg1decay   = (pDimRgn->EG1ControllerDecayInfluence)   ? 0.0001 * (double) (1 << pDimRgn->EG1ControllerDecayInfluence)   * eg1controllervalue : 0.0;          switch (pRegion->EG1Controller.type) {
163              double eg1release = (pDimRgn->EG1ControllerReleaseInfluence) ? 0.0001 * (double) (1 << pDimRgn->EG1ControllerReleaseInfluence) * eg1controllervalue : 0.0;              case ::gig::eg1_ctrl_t::type_none: // no controller defined
164                    eg1controllervalue = 0;
165              pEG1->Trigger(pDimRgn->EG1PreAttack,                  break;
166                            pDimRgn->EG1Attack + eg1attack,              case ::gig::eg1_ctrl_t::type_channelaftertouch:
167                            pDimRgn->EG1Hold,                  eg1controllervalue = GetGigEngineChannel()->ControllerTable[128];
168                            pSample->LoopStart,                  break;
169                            pDimRgn->EG1Decay1 + eg1decay,              case ::gig::eg1_ctrl_t::type_velocity:
170                            pDimRgn->EG1Decay2 + eg1decay,                  eg1controllervalue = MIDIKeyVelocity;
171                            pDimRgn->EG1InfiniteSustain,                  break;
172                            pDimRgn->EG1Sustain,              case ::gig::eg1_ctrl_t::type_controlchange: // MIDI control change controller
173                            pDimRgn->EG1Release + eg1release,                  eg1controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG1Controller.controller_number];
174                            Delay);                  break;
175          }          }
176            if (pRegion->EG1ControllerInvert) eg1controllervalue = 127 - eg1controllervalue;
177    
178            return eg1controllervalue;
179        }
180    
181          // setup EG 2 (VCF Cutoff EG)      Voice::EGInfo Voice::CalculateEG1ControllerInfluence(double eg1ControllerValue) {
182          {          EGInfo eg;
183              // get current value of EG2 controller          // (eg1attack is different from the others)
184              double eg2controllervalue;          if (pRegion->EG1Attack < 1e-8 && // attack in gig == 0
185              switch (pDimRgn->EG2Controller.type) {              (pRegion->EG1ControllerAttackInfluence == 0 ||
186                  case ::gig::eg2_ctrl_t::type_none: // no controller defined               eg1ControllerValue <= 10)) { // strange GSt special case
187                      eg2controllervalue = 0;              eg.Attack = 0; // this will force the attack to be 0 in the call to EG1.trigger
188                      break;          } else {
189                  case ::gig::eg2_ctrl_t::type_channelaftertouch:              eg.Attack  = (pRegion->EG1ControllerAttackInfluence)  ?
190                      eg2controllervalue = 0; // TODO: aftertouch not yet supported                  1 + 0.031 * (double) (pRegion->EG1ControllerAttackInfluence == 1 ?
191                      break;                                        1 : 1 << pRegion->EG1ControllerAttackInfluence) * eg1ControllerValue : 1.0;
192                  case ::gig::eg2_ctrl_t::type_velocity:          }
193                      eg2controllervalue = itNoteOnEvent->Param.Note.Velocity;          eg.Decay   = (pRegion->EG1ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerDecayInfluence)   * eg1ControllerValue : 1.0;
194                      break;          eg.Release = (pRegion->EG1ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerReleaseInfluence) * eg1ControllerValue : 1.0;
195                  case ::gig::eg2_ctrl_t::type_controlchange: // MIDI control change controller  
196                      eg2controllervalue = pEngine->ControllerTable[pDimRgn->EG2Controller.controller_number];          return eg;
197                      break;      }
198              }  
199              if (pDimRgn->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue;      double Voice::GetEG2ControllerValue(uint8_t MIDIKeyVelocity) {
200            double eg2controllervalue = 0;
201              // calculate influence of EG2 controller on EG2's parameters (TODO: needs to be fine tuned)          switch (pRegion->EG2Controller.type) {
202              double eg2attack  = (pDimRgn->EG2ControllerAttackInfluence)  ? 0.0001 * (double) (1 << pDimRgn->EG2ControllerAttackInfluence)  * eg2controllervalue : 0.0;              case ::gig::eg2_ctrl_t::type_none: // no controller defined
203              double eg2decay   = (pDimRgn->EG2ControllerDecayInfluence)   ? 0.0001 * (double) (1 << pDimRgn->EG2ControllerDecayInfluence)   * eg2controllervalue : 0.0;                  eg2controllervalue = 0;
204              double eg2release = (pDimRgn->EG2ControllerReleaseInfluence) ? 0.0001 * (double) (1 << pDimRgn->EG2ControllerReleaseInfluence) * eg2controllervalue : 0.0;                  break;
205                case ::gig::eg2_ctrl_t::type_channelaftertouch:
206              pEG2->Trigger(pDimRgn->EG2PreAttack,                  eg2controllervalue = GetGigEngineChannel()->ControllerTable[128];
207                            pDimRgn->EG2Attack + eg2attack,                  break;
208                            false,              case ::gig::eg2_ctrl_t::type_velocity:
209                            pSample->LoopStart,                  eg2controllervalue = MIDIKeyVelocity;
210                            pDimRgn->EG2Decay1 + eg2decay,                  break;
211                            pDimRgn->EG2Decay2 + eg2decay,              case ::gig::eg2_ctrl_t::type_controlchange: // MIDI control change controller
212                            pDimRgn->EG2InfiniteSustain,                  eg2controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG2Controller.controller_number];
213                            pDimRgn->EG2Sustain,                  break;
                           pDimRgn->EG2Release + eg2release,  
                           Delay);  
214          }          }
215            if (pRegion->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue;
216    
217            return eg2controllervalue;
218        }
219    
220          // setup EG 3 (VCO EG)      Voice::EGInfo Voice::CalculateEG2ControllerInfluence(double eg2ControllerValue) {
221          {          EGInfo eg;
222            double eg3depth = RTMath::CentsToFreqRatio(pDimRgn->EG3Depth);          eg.Attack  = (pRegion->EG2ControllerAttackInfluence)  ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerAttackInfluence)  * eg2ControllerValue : 1.0;
223            pEG3->Trigger(eg3depth, pDimRgn->EG3Attack, Delay);          eg.Decay   = (pRegion->EG2ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerDecayInfluence)   * eg2ControllerValue : 1.0;
224          }          eg.Release = (pRegion->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerReleaseInfluence) * eg2ControllerValue : 1.0;
225    
226            return eg;
227        }
228    
229          // setup LFO 1 (VCA LFO)      void Voice::InitLFO1() {
230          {          uint16_t lfo1_internal_depth;
231              uint16_t lfo1_internal_depth;          switch (pRegion->LFO1Controller) {
232              switch (pDimRgn->LFO1Controller) {              case ::gig::lfo1_ctrl_internal:
233                  case ::gig::lfo1_ctrl_internal:                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
234                      lfo1_internal_depth  = pDimRgn->LFO1InternalDepth;                  pLFO1->ExtController = 0; // no external controller
235                      pLFO1->ExtController = 0; // no external controller                  bLFO1Enabled         = (lfo1_internal_depth > 0);
236                      break;                  break;
237                  case ::gig::lfo1_ctrl_modwheel:              case ::gig::lfo1_ctrl_modwheel:
238                      lfo1_internal_depth  = 0;                  lfo1_internal_depth  = 0;
239                      pLFO1->ExtController = 1; // MIDI controller 1                  pLFO1->ExtController = 1; // MIDI controller 1
240                      break;                  bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
241                  case ::gig::lfo1_ctrl_breath:                  break;
242                      lfo1_internal_depth  = 0;              case ::gig::lfo1_ctrl_breath:
243                      pLFO1->ExtController = 2; // MIDI controller 2                  lfo1_internal_depth  = 0;
244                      break;                  pLFO1->ExtController = 2; // MIDI controller 2
245                  case ::gig::lfo1_ctrl_internal_modwheel:                  bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
246                      lfo1_internal_depth  = pDimRgn->LFO1InternalDepth;                  break;
247                      pLFO1->ExtController = 1; // MIDI controller 1              case ::gig::lfo1_ctrl_internal_modwheel:
248                      break;                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
249                  case ::gig::lfo1_ctrl_internal_breath:                  pLFO1->ExtController = 1; // MIDI controller 1
250                      lfo1_internal_depth  = pDimRgn->LFO1InternalDepth;                  bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
251                      pLFO1->ExtController = 2; // MIDI controller 2                  break;
252                      break;              case ::gig::lfo1_ctrl_internal_breath:
253                  default:                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
254                      lfo1_internal_depth  = 0;                  pLFO1->ExtController = 2; // MIDI controller 2
255                      pLFO1->ExtController = 0; // no external controller                  bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
256              }                  break;
257              pLFO1->Trigger(pDimRgn->LFO1Frequency,              default:
258                            lfo1_internal_depth,                  lfo1_internal_depth  = 0;
259                            pDimRgn->LFO1ControlDepth,                  pLFO1->ExtController = 0; // no external controller
260                            pEngine->ControllerTable[pLFO1->ExtController],                  bLFO1Enabled         = false;
261                            pDimRgn->LFO1FlipPhase,          }
262                            pEngine->SampleRate,          if (bLFO1Enabled) {
263                            Delay);              pLFO1->trigger(pRegion->LFO1Frequency,
264                               start_level_min,
265                               lfo1_internal_depth,
266                               pRegion->LFO1ControlDepth,
267                               pRegion->LFO1FlipPhase,
268                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
269                pLFO1->update(pLFO1->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO1->ExtController] : 0);
270          }          }
271        }
272    
273        void Voice::InitLFO2() {
274          // setup LFO 2 (VCF Cutoff LFO)          uint16_t lfo2_internal_depth;
275          {          switch (pRegion->LFO2Controller) {
276              uint16_t lfo2_internal_depth;              case ::gig::lfo2_ctrl_internal:
277              switch (pDimRgn->LFO2Controller) {                  lfo2_internal_depth  = pRegion->LFO2InternalDepth;
278                  case ::gig::lfo2_ctrl_internal:                  pLFO2->ExtController = 0; // no external controller
279                      lfo2_internal_depth  = pDimRgn->LFO2InternalDepth;                  bLFO2Enabled         = (lfo2_internal_depth > 0);
280                      pLFO2->ExtController = 0; // no external controller                  break;
281                      break;              case ::gig::lfo2_ctrl_modwheel:
282                  case ::gig::lfo2_ctrl_modwheel:                  lfo2_internal_depth  = 0;
283                      lfo2_internal_depth  = 0;                  pLFO2->ExtController = 1; // MIDI controller 1
284                      pLFO2->ExtController = 1; // MIDI controller 1                  bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
285                      break;                  break;
286                  case ::gig::lfo2_ctrl_foot:              case ::gig::lfo2_ctrl_foot:
287                      lfo2_internal_depth  = 0;                  lfo2_internal_depth  = 0;
288                      pLFO2->ExtController = 4; // MIDI controller 4                  pLFO2->ExtController = 4; // MIDI controller 4
289                      break;                  bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
290                  case ::gig::lfo2_ctrl_internal_modwheel:                  break;
291                      lfo2_internal_depth  = pDimRgn->LFO2InternalDepth;              case ::gig::lfo2_ctrl_internal_modwheel:
292                      pLFO2->ExtController = 1; // MIDI controller 1                  lfo2_internal_depth  = pRegion->LFO2InternalDepth;
293                      break;                  pLFO2->ExtController = 1; // MIDI controller 1
294                  case ::gig::lfo2_ctrl_internal_foot:                  bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
295                      lfo2_internal_depth  = pDimRgn->LFO2InternalDepth;                  break;
296                      pLFO2->ExtController = 4; // MIDI controller 4              case ::gig::lfo2_ctrl_internal_foot:
297                      break;                  lfo2_internal_depth  = pRegion->LFO2InternalDepth;
298                  default:                  pLFO2->ExtController = 4; // MIDI controller 4
299                      lfo2_internal_depth  = 0;                  bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
300                      pLFO2->ExtController = 0; // no external controller                  break;
301              }              default:
302              pLFO2->Trigger(pDimRgn->LFO2Frequency,                  lfo2_internal_depth  = 0;
303                            lfo2_internal_depth,                  pLFO2->ExtController = 0; // no external controller
304                            pDimRgn->LFO2ControlDepth,                  bLFO2Enabled         = false;
305                            pEngine->ControllerTable[pLFO2->ExtController],          }
306                            pDimRgn->LFO2FlipPhase,          if (bLFO2Enabled) {
307                            pEngine->SampleRate,              pLFO2->trigger(pRegion->LFO2Frequency,
308                            Delay);                             start_level_max,
309                               lfo2_internal_depth,
310                               pRegion->LFO2ControlDepth,
311                               pRegion->LFO2FlipPhase,
312                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
313                pLFO2->update(pLFO2->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO2->ExtController] : 0);
314          }          }
315        }
316    
317        void Voice::InitLFO3() {
318          // setup LFO 3 (VCO LFO)          uint16_t lfo3_internal_depth;
319          {          switch (pRegion->LFO3Controller) {
320              uint16_t lfo3_internal_depth;              case ::gig::lfo3_ctrl_internal:
321              switch (pDimRgn->LFO3Controller) {                  lfo3_internal_depth  = pRegion->LFO3InternalDepth;
322                  case ::gig::lfo3_ctrl_internal:                  pLFO3->ExtController = 0; // no external controller
323                      lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;                  bLFO3Enabled         = (lfo3_internal_depth > 0);
324                      pLFO3->ExtController = 0; // no external controller                  break;
325                      break;              case ::gig::lfo3_ctrl_modwheel:
326                  case ::gig::lfo3_ctrl_modwheel:                  lfo3_internal_depth  = 0;
327                      lfo3_internal_depth  = 0;                  pLFO3->ExtController = 1; // MIDI controller 1
328                      pLFO3->ExtController = 1; // MIDI controller 1                  bLFO3Enabled         = (pRegion->LFO3ControlDepth > 0);
329                      break;                  break;
330                  case ::gig::lfo3_ctrl_aftertouch:              case ::gig::lfo3_ctrl_aftertouch:
331                      lfo3_internal_depth  = 0;                  lfo3_internal_depth  = 0;
332                      pLFO3->ExtController = 0; // TODO: aftertouch not implemented yet                  pLFO3->ExtController = 128;
333                      break;                  bLFO3Enabled         = true;
334                  case ::gig::lfo3_ctrl_internal_modwheel:                  break;
335                      lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;              case ::gig::lfo3_ctrl_internal_modwheel:
336                      pLFO3->ExtController = 1; // MIDI controller 1                  lfo3_internal_depth  = pRegion->LFO3InternalDepth;
337                      break;                  pLFO3->ExtController = 1; // MIDI controller 1
338                  case ::gig::lfo3_ctrl_internal_aftertouch:                  bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
339                      lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;                  break;
340                      pLFO1->ExtController = 0; // TODO: aftertouch not implemented yet              case ::gig::lfo3_ctrl_internal_aftertouch:
341                      break;                  lfo3_internal_depth  = pRegion->LFO3InternalDepth;
342                  default:                  pLFO3->ExtController = 128;
343                      lfo3_internal_depth  = 0;                  bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
344                      pLFO3->ExtController = 0; // no external controller                  break;
345              }              default:
346              pLFO3->Trigger(pDimRgn->LFO3Frequency,                  lfo3_internal_depth  = 0;
347                            lfo3_internal_depth,                  pLFO3->ExtController = 0; // no external controller
348                            pDimRgn->LFO3ControlDepth,                  bLFO3Enabled         = false;
349                            pEngine->ControllerTable[pLFO3->ExtController],          }
350                            false,          if (bLFO3Enabled) {
351                            pEngine->SampleRate,              pLFO3->trigger(pRegion->LFO3Frequency,
352                            Delay);                             start_level_mid,
353                               lfo3_internal_depth,
354                               pRegion->LFO3ControlDepth,
355                               false,
356                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
357                pLFO3->update(pLFO3->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO3->ExtController] : 0);
358          }          }
359        }
360    
361        float Voice::CalculateCutoffBase(uint8_t MIDIKeyVelocity) {
362          #if FORCE_FILTER_USAGE          float cutoff = pRegion->GetVelocityCutoff(MIDIKeyVelocity);
363          const bool bUseFilter = true;          if (pRegion->VCFKeyboardTracking) {
364          #else // use filter only if instrument file told so              cutoff *= RTMath::CentsToFreqRatioUnlimited((MIDIKey - pRegion->VCFKeyboardTrackingBreakpoint) * 100);
365          const bool bUseFilter = pDimRgn->VCFEnabled;          }
366          #endif // FORCE_FILTER_USAGE          return cutoff;
367          SYNTHESIS_MODE_SET_FILTER(SynthesisMode, bUseFilter);      }
368          if (bUseFilter) {  
369              #ifdef OVERRIDE_FILTER_CUTOFF_CTRL      float Voice::CalculateFinalCutoff(float cutoffBase) {
370              VCFCutoffCtrl.controller = OVERRIDE_FILTER_CUTOFF_CTRL;          int cvalue;
371              #else // use the one defined in the instrument file          if (VCFCutoffCtrl.controller) {
372              switch (pDimRgn->VCFCutoffController) {              cvalue = GetGigEngineChannel()->ControllerTable[VCFCutoffCtrl.controller];
373                  case ::gig::vcf_cutoff_ctrl_modwheel:              if (pRegion->VCFCutoffControllerInvert) cvalue = 127 - cvalue;
374                      VCFCutoffCtrl.controller = 1;              // VCFVelocityScale in this case means Minimum cutoff
375                      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;  
376          }          }
377          else {          else {
378              VCFCutoffCtrl.controller    = 0;              cvalue = pRegion->VCFCutoff;
             VCFResonanceCtrl.controller = 0;  
379          }          }
380            float fco = cutoffBase * float(cvalue);
381            if (fco > 127.0f) fco = 127.0f;
382    
383          return 0; // success          return fco;
384      }      }
385    
386      /**      uint8_t Voice::GetVCFCutoffCtrl() {
387       *  Renders the audio data for this voice for the current audio fragment.          uint8_t ctrl;
388       *  The sample input data can either come from RAM (cached sample or sample          switch (pRegion->VCFCutoffController) {
389       *  part) or directly from disk. The output signal will be rendered by              case ::gig::vcf_cutoff_ctrl_modwheel:
390       *  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;  
                     }  
                 }  
391                  break;                  break;
392                case ::gig::vcf_cutoff_ctrl_effect1:
393              case playback_state_end:                  ctrl = 12;
394                  std::cerr << "gig::Voice::Render(): entered with playback_state_end, this is a bug!\n" << std::flush;                  break;
395                case ::gig::vcf_cutoff_ctrl_effect2:
396                    ctrl = 13;
397                    break;
398                case ::gig::vcf_cutoff_ctrl_breath:
399                    ctrl = 2;
400                    break;
401                case ::gig::vcf_cutoff_ctrl_foot:
402                    ctrl = 4;
403                    break;
404                case ::gig::vcf_cutoff_ctrl_sustainpedal:
405                    ctrl = 64;
406                    break;
407                case ::gig::vcf_cutoff_ctrl_softpedal:
408                    ctrl = 67;
409                    break;
410                case ::gig::vcf_cutoff_ctrl_genpurpose7:
411                    ctrl = 82;
412                    break;
413                case ::gig::vcf_cutoff_ctrl_genpurpose8:
414                    ctrl = 83;
415                    break;
416                case ::gig::vcf_cutoff_ctrl_aftertouch:
417                    ctrl = 128;
418                    break;
419                case ::gig::vcf_cutoff_ctrl_none:
420                default:
421                    ctrl = 0;
422                  break;                  break;
423          }          }
424    
425          // 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  
         }  
426      }      }
427    
428      /**      uint8_t Voice::GetVCFResonanceCtrl() {
429       * Calculate all necessary, final biquad filter parameters.          uint8_t ctrl;
430       *          switch (pRegion->VCFResonanceController) {
431       * @param Samples - number of samples to be rendered in this audio fragment cycle              case ::gig::vcf_res_ctrl_genpurpose3:
432       */                  ctrl = 18;
433      void Voice::CalculateBiquadParameters(uint Samples) {                  break;
434          biquad_param_t bqbase;              case ::gig::vcf_res_ctrl_genpurpose4:
435          biquad_param_t bqmain;                  ctrl = 19;
436          float prev_cutoff = pEngine->pSynthesisParameters[Event::destination_vcfc][0];                  break;
437          float prev_res    = pEngine->pSynthesisParameters[Event::destination_vcfr][0];              case ::gig::vcf_res_ctrl_genpurpose5:
438          FilterLeft.SetParameters( &bqbase, &bqmain, prev_cutoff + FILTER_CUTOFF_MIN, prev_res, pEngine->SampleRate);                  ctrl = 80;
439          FilterRight.SetParameters(&bqbase, &bqmain, prev_cutoff + FILTER_CUTOFF_MIN, prev_res, pEngine->SampleRate);                  break;
440          pEngine->pBasicFilterParameters[0] = bqbase;              case ::gig::vcf_res_ctrl_genpurpose6:
441          pEngine->pMainFilterParameters[0]  = bqmain;                  ctrl = 81;
442                    break;
443          float* bq;              case ::gig::vcf_res_ctrl_none:
444          for (int i = 1; i < Samples; i++) {              default:
445              // 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;  
446          }          }
     }  
447    
448      /**          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();  
449      }      }
450    
451      /**      void Voice::TriggerEG1(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
452       *  Kill the voice in regular sense. Let the voice render audio until          EG1.trigger(pRegion->EG1PreAttack,
453       *  the kill event actually occured and then fade down the volume level                      RTMath::Max(pRegion->EG1Attack, 0.0316) * egInfo.Attack,
454       *  very quickly and let the voice die finally. Unlike a normal release                      pRegion->EG1Hold,
455       *  of a voice, a kill process cannot be cancalled and is therefore                      pRegion->EG1Decay1 * egInfo.Decay * velrelease,
456       *  usually used for voice stealing and key group conflicts.                      pRegion->EG1Decay2 * egInfo.Decay * velrelease,
457       *                      pRegion->EG1InfiniteSustain,
458       *  @param itKillEvent - event which caused the voice to be killed                      pRegion->EG1Sustain,
459       */                      RTMath::Max(pRegion->EG1Release * velrelease, 0.014) * egInfo.Release,
460      void Voice::Kill(Pool<Event>::Iterator& itKillEvent) {                      velocityAttenuation,
461          //FIXME: just two sanity checks for debugging, can be removed                      sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
462          if (!itKillEvent) dmsg(1,("gig::Voice::Kill(): ERROR, !itKillEvent !!!\n"));      }
463          if (itKillEvent && !itKillEvent.isValid()) dmsg(1,("gig::Voice::Kill(): ERROR, itKillEvent invalid !!!\n"));  
464        void Voice::TriggerEG2(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
465          if (itTriggerEvent && itKillEvent->FragmentPos() <= itTriggerEvent->FragmentPos()) return;          EG2.trigger(uint(RgnInfo.EG2PreAttack),
466          this->itKillEvent = itKillEvent;                      RgnInfo.EG2Attack * egInfo.Attack,
467                        false,
468                        RgnInfo.EG2Decay1 * egInfo.Decay * velrelease,
469                        RgnInfo.EG2Decay2 * egInfo.Decay * velrelease,
470                        RgnInfo.EG2InfiniteSustain,
471                        uint(RgnInfo.EG2Sustain),
472                        RgnInfo.EG2Release * egInfo.Release * velrelease,
473                        velocityAttenuation,
474                        sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
475        }
476    
477        void Voice::ProcessGroupEvent(RTList<Event>::Iterator& itEvent) {
478            dmsg(4,("Voice %x processGroupEvents event type=%d", this, itEvent->Type));
479    
480            // TODO: The SustainPedal condition could be wrong, maybe the
481            // check should be if this Voice is in release stage or is a
482            // release sample instead. Need to test this in GSt.
483            // -- Andreas
484            //
485            // Commented sustain pedal check out. I don't think voices of the same
486            // note should be stopped at all, because it doesn't sound naturally
487            // with a drumkit.
488            // -- Christian, 2013-01-08
489            if (itEvent->Param.Note.Key != MIDIKey /*||
490                !GetGigEngineChannel()->SustainPedal*/) {
491                dmsg(4,("Voice %x - kill", this));
492    
493                // kill the voice fast
494                pEG1->enterFadeOutStage();
495            }
496        }
497    
498        void Voice::CalculateFadeOutCoeff(float FadeOutTime, float SampleRate) {
499            EG1.CalculateFadeOutCoeff(FadeOutTime, SampleRate);
500        }
501    
502        int Voice::CalculatePan(uint8_t pan) {
503            int p;
504            // Gst behaviour: -64 and 63 are special cases
505            if (RgnInfo.Pan == -64)     p = pan * 2 - 127;
506            else if (RgnInfo.Pan == 63) p = pan * 2;
507            else                        p = pan + RgnInfo.Pan;
508    
509            if (p < 0) return 0;
510            if (p > 127) return 127;
511            return p;
512      }      }
513    
514  }} // namespace LinuxSampler::gig  }} // namespace LinuxSampler::gig
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