/[svn]/linuxsampler/trunk/src/engines/gig/Voice.cpp
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revision 325 by senkov, Tue Dec 21 04:54:37 2004 UTC revision 2055 by persson, Sat Jan 30 10:30:02 2010 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 - 2010 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      const int Voice::FILTER_UPDATE_MASK(CalculateFilterUpdateMask());          pEG1 = &EG1;
   
     float Voice::CalculateFilterCutoffCoeff() {  
         return log(FILTER_CUTOFF_MIN / FILTER_CUTOFF_MAX);  
38      }      }
39    
40      int Voice::CalculateFilterUpdateMask() {      Voice::~Voice() {
         if (FILTER_UPDATE_PERIOD <= 0) return 0;  
         int power_of_two;  
         for (power_of_two = 0; 1<<power_of_two < FILTER_UPDATE_PERIOD; power_of_two++);  
         return (1 << power_of_two) - 1;  
41      }      }
42    
43      Voice::Voice() {      EngineChannel* Voice::GetGigEngineChannel() {
44          pEngine     = NULL;          return static_cast<EngineChannel*>(pEngineChannel);
         pDiskThread = NULL;  
         PlaybackState = playback_state_end;  
         pEG1   = NULL;  
         pEG2   = NULL;  
         pEG3   = NULL;  
         pVCAManipulator  = NULL;  
         pVCFCManipulator = NULL;  
         pVCOManipulator  = NULL;  
         pLFO1  = NULL;  
         pLFO2  = NULL;  
         pLFO3  = NULL;  
         KeyGroup = 0;  
   
         // select synthesis implementation (currently either pure C++ or MMX+SSE(1))  
         SYNTHESIS_MODE_SET_IMPLEMENTATION(SynthesisMode, Features::supportsMMX() && Features::supportsSSE());  
         SYNTHESIS_MODE_SET_PROFILING(SynthesisMode, true);  
45      }      }
46    
47      Voice::~Voice() {      void Voice::SetEngine(LinuxSampler::Engine* pEngine) {
48          if (pEG1)  delete pEG1;          Engine* engine = static_cast<Engine*>(pEngine);
49          if (pEG2)  delete pEG2;          this->pEngine     = engine;
50          if (pEG3)  delete pEG3;          this->pDiskThread = engine->pDiskThread;
         if (pLFO1) delete pLFO1;  
         if (pLFO2) delete pLFO2;  
         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.  
   
         this->pDiskThread = pEngine->pDiskThread;  
51          dmsg(6,("Voice::SetEngine()\n"));          dmsg(6,("Voice::SetEngine()\n"));
52      }      }
53    
54      /**      Voice::SampleInfo Voice::GetSampleInfo() {
55       *  Initializes and triggers the voice, a disk stream will be launched if          SampleInfo si;
56       *  needed.          si.SampleRate       = pSample->SamplesPerSecond;
57       *          si.ChannelCount     = pSample->Channels;
58       *  @param itNoteOnEvent       - event that caused triggering of this voice          si.FrameSize        = pSample->FrameSize;
59       *  @param PitchBend           - MIDI detune factor (-8192 ... +8191)          si.BitDepth         = pSample->BitDepth;
60       *  @param pInstrument         - points to the loaded instrument which provides sample wave(s) and articulation data          si.TotalFrameCount  = pSample->SamplesTotal;
      *  @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 something failed  
      */  
     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"));  
         }  
   
         Type            = type_normal;  
         MIDIKey         = itNoteOnEvent->Param.Note.Key;  
         pRegion         = pInstrument->GetRegion(MIDIKey);  
         PlaybackState   = playback_state_ram; // we always start playback from RAM cache and switch then to disk if needed  
         Delay           = itNoteOnEvent->FragmentPos();  
         itTriggerEvent  = itNoteOnEvent;  
         itKillEvent     = Pool<Event>::Iterator();  
         itChildVoice    = Pool<Voice>::Iterator();  
   
         if (!pRegion) {  
             std::cerr << "gig::Voice: No Region defined for MIDI key " << MIDIKey << std::endl << std::flush;  
             KillImmediately();  
             return -1;  
         }  
   
         KeyGroup = pRegion->KeyGroup;  
   
         // get current dimension values to select the right dimension region  
         //FIXME: controller values for selecting the dimension region here are currently not sample accurate  
         uint DimValues[5] = {0,0,0,0,0};  
         for (int i = pRegion->Dimensions - 1; i >= 0; i--) {  
             switch (pRegion->pDimensionDefinitions[i].dimension) {  
                 case ::gig::dimension_samplechannel:  
                     DimValues[i] = 0; //TODO: we currently ignore this dimension  
                     break;  
                 case ::gig::dimension_layer:  
                     DimValues[i] = iLayer;  
                     // if this is the 1st layer then spawn further voices for all the other layers  
                     if (iLayer == 0)  
                         for (int iNewLayer = 1; iNewLayer < pRegion->pDimensionDefinitions[i].zones; iNewLayer++)  
                             itChildVoice = pEngine->LaunchVoice(itNoteOnEvent, iNewLayer, ReleaseTriggerVoice, VoiceStealing);  
                     break;  
                 case ::gig::dimension_velocity:  
                     DimValues[i] = itNoteOnEvent->Param.Note.Velocity;  
                     break;  
                 case ::gig::dimension_channelaftertouch:  
                     DimValues[i] = 0; //TODO: we currently ignore this dimension  
                     break;  
                 case ::gig::dimension_releasetrigger:  
                     Type = (ReleaseTriggerVoice) ? type_release_trigger : (!iLayer) ? type_release_trigger_required : type_normal;  
                     DimValues[i] = (uint) ReleaseTriggerVoice;  
                     break;  
                 case ::gig::dimension_keyboard:  
                     DimValues[i] = (uint) itNoteOnEvent->Param.Note.Key;  
                     break;  
                 case ::gig::dimension_modwheel:  
                     DimValues[i] = pEngine->ControllerTable[1];  
                     break;  
                 case ::gig::dimension_breath:  
                     DimValues[i] = pEngine->ControllerTable[2];  
                     break;  
                 case ::gig::dimension_foot:  
                     DimValues[i] = pEngine->ControllerTable[4];  
                     break;  
                 case ::gig::dimension_portamentotime:  
                     DimValues[i] = pEngine->ControllerTable[5];  
                     break;  
                 case ::gig::dimension_effect1:  
                     DimValues[i] = pEngine->ControllerTable[12];  
                     break;  
                 case ::gig::dimension_effect2:  
                     DimValues[i] = pEngine->ControllerTable[13];  
                     break;  
                 case ::gig::dimension_genpurpose1:  
                     DimValues[i] = pEngine->ControllerTable[16];  
                     break;  
                 case ::gig::dimension_genpurpose2:  
                     DimValues[i] = pEngine->ControllerTable[17];  
                     break;  
                 case ::gig::dimension_genpurpose3:  
                     DimValues[i] = pEngine->ControllerTable[18];  
                     break;  
                 case ::gig::dimension_genpurpose4:  
                     DimValues[i] = pEngine->ControllerTable[19];  
                     break;  
                 case ::gig::dimension_sustainpedal:  
                     DimValues[i] = pEngine->ControllerTable[64];  
                     break;  
                 case ::gig::dimension_portamento:  
                     DimValues[i] = pEngine->ControllerTable[65];  
                     break;  
                 case ::gig::dimension_sostenutopedal:  
                     DimValues[i] = pEngine->ControllerTable[66];  
                     break;  
                 case ::gig::dimension_softpedal:  
                     DimValues[i] = pEngine->ControllerTable[67];  
                     break;  
                 case ::gig::dimension_genpurpose5:  
                     DimValues[i] = pEngine->ControllerTable[80];  
                     break;  
                 case ::gig::dimension_genpurpose6:  
                     DimValues[i] = pEngine->ControllerTable[81];  
                     break;  
                 case ::gig::dimension_genpurpose7:  
                     DimValues[i] = pEngine->ControllerTable[82];  
                     break;  
                 case ::gig::dimension_genpurpose8:  
                     DimValues[i] = pEngine->ControllerTable[83];  
                     break;  
                 case ::gig::dimension_effect1depth:  
                     DimValues[i] = pEngine->ControllerTable[91];  
                     break;  
                 case ::gig::dimension_effect2depth:  
                     DimValues[i] = pEngine->ControllerTable[92];  
                     break;  
                 case ::gig::dimension_effect3depth:  
                     DimValues[i] = pEngine->ControllerTable[93];  
                     break;  
                 case ::gig::dimension_effect4depth:  
                     DimValues[i] = pEngine->ControllerTable[94];  
                     break;  
                 case ::gig::dimension_effect5depth:  
                     DimValues[i] = pEngine->ControllerTable[95];  
                     break;  
                 case ::gig::dimension_none:  
                     std::cerr << "gig::Voice::Trigger() Error: dimension=none\n" << std::flush;  
                     break;  
                 default:  
                     std::cerr << "gig::Voice::Trigger() Error: Unknown dimension\n" << std::flush;  
             }  
         }  
         pDimRgn = pRegion->GetDimensionRegionByValue(DimValues[4],DimValues[3],DimValues[2],DimValues[1],DimValues[0]);  
61    
62          pSample = pDimRgn->pSample; // sample won't change until the voice is finished          si.HasLoops       = pRegion->SampleLoops;
63            si.LoopStart      = (si.HasLoops) ? pRegion->pSampleLoops[0].LoopStart  : 0;
64            si.LoopLength     = (si.HasLoops) ? pRegion->pSampleLoops[0].LoopLength : 0;
65            si.LoopPlayCount  = pSample->LoopPlayCount;
66            si.Unpitched      = !pRegion->PitchTrack;
67    
68          // select channel mode (mono or stereo)          return si;
69          SYNTHESIS_MODE_SET_CHANNELS(SynthesisMode, pSample->Channels == 2);      }
70    
71          // get starting crossfade volume level      Voice::RegionInfo Voice::GetRegionInfo() {
72          switch (pDimRgn->AttenuationController.type) {          RegionInfo ri;
73              case ::gig::attenuation_ctrl_t::type_channelaftertouch:          ri.UnityNote = pRegion->UnityNote;
74                  CrossfadeVolume = 1.0f; //TODO: aftertouch not supported yet          ri.FineTune  = pRegion->FineTune;
75                  break;          ri.Pan       = pRegion->Pan;
76              case ::gig::attenuation_ctrl_t::type_velocity:          ri.SampleStartOffset = pRegion->SampleStartOffset;
                 CrossfadeVolume = CrossfadeAttenuation(itNoteOnEvent->Param.Note.Velocity);  
                 break;  
             case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate  
                 CrossfadeVolume = CrossfadeAttenuation(pEngine->ControllerTable[pDimRgn->AttenuationController.controller_number]);  
                 break;  
             case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined  
             default:  
                 CrossfadeVolume = 1.0f;  
         }  
77    
78          PanLeft  = 1.0f - float(RTMath::Max(pDimRgn->Pan, 0)) /  63.0f;          ri.EG1PreAttack        = pRegion->EG1PreAttack;
79          PanRight = 1.0f - float(RTMath::Min(pDimRgn->Pan, 0)) / -64.0f;          ri.EG1Attack           = pRegion->EG1Attack;
80            ri.EG1Hold             = pRegion->EG1Hold;
81            ri.EG1Decay1           = pRegion->EG1Decay1;
82            ri.EG1Decay2           = pRegion->EG1Decay2;
83            ri.EG1Sustain          = pRegion->EG1Sustain;
84            ri.EG1InfiniteSustain  = pRegion->EG1InfiniteSustain;
85            ri.EG1Release          = pRegion->EG1Release;
86    
87          Pos = pDimRgn->SampleStartOffset; // offset where we should start playback of sample (0 - 2000 sample points)          ri.EG2PreAttack        = pRegion->EG2PreAttack;
88            ri.EG2Attack           = pRegion->EG2Attack;
89            ri.EG2Decay1           = pRegion->EG2Decay1;
90            ri.EG2Decay2           = pRegion->EG2Decay2;
91            ri.EG2Sustain          = pRegion->EG2Sustain;
92            ri.EG2InfiniteSustain  = pRegion->EG2InfiniteSustain;
93            ri.EG2Release          = pRegion->EG2Release;
94    
95          // Check if the sample needs disk streaming or is too short for that          ri.EG3Attack     = pRegion->EG3Attack;
96          long cachedsamples = pSample->GetCache().Size / pSample->FrameSize;          ri.EG3Depth      = pRegion->EG3Depth;
97          DiskVoice          = cachedsamples < pSample->SamplesTotal;          ri.VCFEnabled    = pRegion->VCFEnabled;
98            ri.VCFType       = pRegion->VCFType;
99            ri.VCFResonance  = pRegion->VCFResonance;
100    
101          if (DiskVoice) { // voice to be streamed from disk          ri.ReleaseTriggerDecay = pRegion->ReleaseTriggerDecay;
             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)  
102    
103              // check if there's a loop defined which completely fits into the cached (RAM) part of the sample          return ri;
104              if (pSample->Loops && pSample->LoopEnd <= MaxRAMPos) {      }
                 RAMLoop        = true;  
                 LoopCyclesLeft = pSample->LoopPlayCount;  
             }  
             else RAMLoop = false;  
105    
106              if (pDiskThread->OrderNewStream(&DiskStreamRef, pSample, MaxRAMPos, !RAMLoop) < 0) {      Voice::InstrumentInfo Voice::GetInstrumentInfo() {
107                  dmsg(1,("Disk stream order failed!\n"));          InstrumentInfo ii;
108                  KillImmediately();          ii.FineTune = GetGigEngineChannel()->pInstrument->FineTune;
109                  return -1;          ii.PitchbendRange = GetGigEngineChannel()->pInstrument->PitchbendRange;
             }  
             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"));  
         }  
110    
111            return ii;
112        }
113    
114          // calculate initial pitch value      double Voice::GetSampleAttenuation() {
115          {          return pRegion->SampleAttenuation;
116              double pitchbasecents = pDimRgn->FineTune * 10 + (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)  
   
         // 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;  
117    
118              // calculate influence of EG1 controller on EG1's parameters (TODO: needs to be fine tuned)      double Voice::GetVelocityAttenuation(uint8_t MIDIKeyVelocity) {
119              double eg1attack  = (pDimRgn->EG1ControllerAttackInfluence)  ? 0.0001 * (double) (1 << pDimRgn->EG1ControllerAttackInfluence)  * eg1controllervalue : 0.0;          return pRegion->GetVelocityAttenuation(MIDIKeyVelocity);
120              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);  
         }  
121    
122        double Voice::GetVelocityRelease(uint8_t MIDIKeyVelocity) {
123            return pRegion->GetVelocityRelease(MIDIKeyVelocity);
124        }
125    
126          // setup EG 2 (VCF Cutoff EG)      void Voice::ProcessCCEvent(RTList<Event>::Iterator& itEvent) {
127          {          if (itEvent->Type == Event::type_control_change && itEvent->Param.CC.Controller) { // if (valid) MIDI control change event
128              // get current value of EG2 controller              if (pRegion->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&
129              double eg2controllervalue;                  itEvent->Param.CC.Controller == pRegion->AttenuationController.controller_number) {
130              switch (pDimRgn->EG2Controller.type) {                  CrossfadeSmoother.update(AbstractEngine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.CC.Value)]);
                 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;  
131              }              }
             if (pDimRgn->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue;  
   
             // calculate influence of EG2 controller on EG2's parameters (TODO: needs to be fine tuned)  
             double eg2attack  = (pDimRgn->EG2ControllerAttackInfluence)  ? 0.0001 * (double) (1 << pDimRgn->EG2ControllerAttackInfluence)  * eg2controllervalue : 0.0;  
             double eg2decay   = (pDimRgn->EG2ControllerDecayInfluence)   ? 0.0001 * (double) (1 << pDimRgn->EG2ControllerDecayInfluence)   * eg2controllervalue : 0.0;  
             double eg2release = (pDimRgn->EG2ControllerReleaseInfluence) ? 0.0001 * (double) (1 << pDimRgn->EG2ControllerReleaseInfluence) * eg2controllervalue : 0.0;  
   
             pEG2->Trigger(pDimRgn->EG2PreAttack,  
                           pDimRgn->EG2Attack + eg2attack,  
                           false,  
                           pSample->LoopStart,  
                           pDimRgn->EG2Decay1 + eg2decay,  
                           pDimRgn->EG2Decay2 + eg2decay,  
                           pDimRgn->EG2InfiniteSustain,  
                           pDimRgn->EG2Sustain,  
                           pDimRgn->EG2Release + eg2release,  
                           Delay);  
132          }          }
133        }
134    
135        void Voice::ProcessCutoffEvent(RTList<Event>::Iterator& itEvent) {
136            int ccvalue = itEvent->Param.CC.Value;
137            if (VCFCutoffCtrl.value == ccvalue) return;
138            VCFCutoffCtrl.value == ccvalue;
139            if (pRegion->VCFCutoffControllerInvert)  ccvalue = 127 - ccvalue;
140            if (ccvalue < pRegion->VCFVelocityScale) ccvalue = pRegion->VCFVelocityScale;
141            float cutoff = CutoffBase * float(ccvalue);
142            if (cutoff > 127.0f) cutoff = 127.0f;
143    
144          // setup EG 3 (VCO EG)          VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of fFinalCutoff next time
145          {          fFinalCutoff = cutoff;
146            double eg3depth = RTMath::CentsToFreqRatio(pDimRgn->EG3Depth);      }
           pEG3->Trigger(eg3depth, pDimRgn->EG3Attack, Delay);  
         }  
   
147    
148          // setup LFO 1 (VCA LFO)      double Voice::CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity) {
149          {          float crossfadeVolume;
150              uint16_t lfo1_internal_depth;          switch (pRegion->AttenuationController.type) {
151              switch (pDimRgn->LFO1Controller) {              case ::gig::attenuation_ctrl_t::type_channelaftertouch:
152                  case ::gig::lfo1_ctrl_internal:                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[128])];
153                      lfo1_internal_depth  = pDimRgn->LFO1InternalDepth;                  break;
154                      pLFO1->ExtController = 0; // no external controller              case ::gig::attenuation_ctrl_t::type_velocity:
155                      break;                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(MIDIKeyVelocity)];
156                  case ::gig::lfo1_ctrl_modwheel:                  break;
157                      lfo1_internal_depth  = 0;              case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate
158                      pLFO1->ExtController = 1; // MIDI controller 1                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[pRegion->AttenuationController.controller_number])];
159                      break;                  break;
160                  case ::gig::lfo1_ctrl_breath:              case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined
161                      lfo1_internal_depth  = 0;              default:
162                      pLFO1->ExtController = 2; // MIDI controller 2                  crossfadeVolume = 1.0f;
                     break;  
                 case ::gig::lfo1_ctrl_internal_modwheel:  
                     lfo1_internal_depth  = pDimRgn->LFO1InternalDepth;  
                     pLFO1->ExtController = 1; // MIDI controller 1  
                     break;  
                 case ::gig::lfo1_ctrl_internal_breath:  
                     lfo1_internal_depth  = pDimRgn->LFO1InternalDepth;  
                     pLFO1->ExtController = 2; // MIDI controller 2  
                     break;  
                 default:  
                     lfo1_internal_depth  = 0;  
                     pLFO1->ExtController = 0; // no external controller  
             }  
             pLFO1->Trigger(pDimRgn->LFO1Frequency,  
                           lfo1_internal_depth,  
                           pDimRgn->LFO1ControlDepth,  
                           pEngine->ControllerTable[pLFO1->ExtController],  
                           pDimRgn->LFO1FlipPhase,  
                           pEngine->SampleRate,  
                           Delay);  
163          }          }
164    
165            return crossfadeVolume;
166        }
167    
168          // setup LFO 2 (VCF Cutoff LFO)      double Voice::GetEG1ControllerValue(uint8_t MIDIKeyVelocity) {
169          {          double eg1controllervalue = 0;
170              uint16_t lfo2_internal_depth;          switch (pRegion->EG1Controller.type) {
171              switch (pDimRgn->LFO2Controller) {              case ::gig::eg1_ctrl_t::type_none: // no controller defined
172                  case ::gig::lfo2_ctrl_internal:                  eg1controllervalue = 0;
173                      lfo2_internal_depth  = pDimRgn->LFO2InternalDepth;                  break;
174                      pLFO2->ExtController = 0; // no external controller              case ::gig::eg1_ctrl_t::type_channelaftertouch:
175                      break;                  eg1controllervalue = GetGigEngineChannel()->ControllerTable[128];
176                  case ::gig::lfo2_ctrl_modwheel:                  break;
177                      lfo2_internal_depth  = 0;              case ::gig::eg1_ctrl_t::type_velocity:
178                      pLFO2->ExtController = 1; // MIDI controller 1                  eg1controllervalue = MIDIKeyVelocity;
179                      break;                  break;
180                  case ::gig::lfo2_ctrl_foot:              case ::gig::eg1_ctrl_t::type_controlchange: // MIDI control change controller
181                      lfo2_internal_depth  = 0;                  eg1controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG1Controller.controller_number];
182                      pLFO2->ExtController = 4; // MIDI controller 4                  break;
                     break;  
                 case ::gig::lfo2_ctrl_internal_modwheel:  
                     lfo2_internal_depth  = pDimRgn->LFO2InternalDepth;  
                     pLFO2->ExtController = 1; // MIDI controller 1  
                     break;  
                 case ::gig::lfo2_ctrl_internal_foot:  
                     lfo2_internal_depth  = pDimRgn->LFO2InternalDepth;  
                     pLFO2->ExtController = 4; // MIDI controller 4  
                     break;  
                 default:  
                     lfo2_internal_depth  = 0;  
                     pLFO2->ExtController = 0; // no external controller  
             }  
             pLFO2->Trigger(pDimRgn->LFO2Frequency,  
                           lfo2_internal_depth,  
                           pDimRgn->LFO2ControlDepth,  
                           pEngine->ControllerTable[pLFO2->ExtController],  
                           pDimRgn->LFO2FlipPhase,  
                           pEngine->SampleRate,  
                           Delay);  
183          }          }
184            if (pRegion->EG1ControllerInvert) eg1controllervalue = 127 - eg1controllervalue;
185    
186            return eg1controllervalue;
187        }
188    
189          // setup LFO 3 (VCO LFO)      Voice::EGInfo Voice::CalculateEG1ControllerInfluence(double eg1ControllerValue) {
190          {          EGInfo eg;
191              uint16_t lfo3_internal_depth;          // (eg1attack is different from the others)
192              switch (pDimRgn->LFO3Controller) {          eg.Attack  = (pRegion->EG1ControllerAttackInfluence)  ?
193                  case ::gig::lfo3_ctrl_internal:              1 + 0.031 * (double) (pRegion->EG1ControllerAttackInfluence == 1 ?
194                      lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;                                    1 : 1 << pRegion->EG1ControllerAttackInfluence) * eg1ControllerValue : 1.0;
195                      pLFO3->ExtController = 0; // no external controller          eg.Decay   = (pRegion->EG1ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerDecayInfluence)   * eg1ControllerValue : 1.0;
196                      break;          eg.Release = (pRegion->EG1ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerReleaseInfluence) * eg1ControllerValue : 1.0;
                 case ::gig::lfo3_ctrl_modwheel:  
                     lfo3_internal_depth  = 0;  
                     pLFO3->ExtController = 1; // MIDI controller 1  
                     break;  
                 case ::gig::lfo3_ctrl_aftertouch:  
                     lfo3_internal_depth  = 0;  
                     pLFO3->ExtController = 0; // TODO: aftertouch not implemented yet  
                     break;  
                 case ::gig::lfo3_ctrl_internal_modwheel:  
                     lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;  
                     pLFO3->ExtController = 1; // MIDI controller 1  
                     break;  
                 case ::gig::lfo3_ctrl_internal_aftertouch:  
                     lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;  
                     pLFO1->ExtController = 0; // TODO: aftertouch not implemented yet  
                     break;  
                 default:  
                     lfo3_internal_depth  = 0;  
                     pLFO3->ExtController = 0; // no external controller  
             }  
             pLFO3->Trigger(pDimRgn->LFO3Frequency,  
                           lfo3_internal_depth,  
                           pDimRgn->LFO3ControlDepth,  
                           pEngine->ControllerTable[pLFO3->ExtController],  
                           false,  
                           pEngine->SampleRate,  
                           Delay);  
         }  
197    
198            return eg;
199        }
200    
201          #if FORCE_FILTER_USAGE      double Voice::GetEG2ControllerValue(uint8_t MIDIKeyVelocity) {
202          SYNTHESIS_MODE_SET_FILTER(SynthesisMode, true);          double eg2controllervalue = 0;
203          #else // use filter only if instrument file told so          switch (pRegion->EG2Controller.type) {
204          SYNTHESIS_MODE_SET_FILTER(SynthesisMode, pDimRgn->VCFEnabled);              case ::gig::eg2_ctrl_t::type_none: // no controller defined
205          #endif // FORCE_FILTER_USAGE                  eg2controllervalue = 0;
206          if (pDimRgn->VCFEnabled) {                  break;
207              #ifdef OVERRIDE_FILTER_CUTOFF_CTRL              case ::gig::eg2_ctrl_t::type_channelaftertouch:
208              VCFCutoffCtrl.controller = OVERRIDE_FILTER_CUTOFF_CTRL;                  eg2controllervalue = GetGigEngineChannel()->ControllerTable[128];
209              #else // use the one defined in the instrument file                  break;
210              switch (pDimRgn->VCFCutoffController) {              case ::gig::eg2_ctrl_t::type_velocity:
211                  case ::gig::vcf_cutoff_ctrl_modwheel:                  eg2controllervalue = MIDIKeyVelocity;
212                      VCFCutoffCtrl.controller = 1;                  break;
213                      break;              case ::gig::eg2_ctrl_t::type_controlchange: // MIDI control change controller
214                  case ::gig::vcf_cutoff_ctrl_effect1:                  eg2controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG2Controller.controller_number];
215                      VCFCutoffCtrl.controller = 12;                  break;
216                      break;          }
217                  case ::gig::vcf_cutoff_ctrl_effect2:          if (pRegion->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue;
                     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  
218    
219              #ifdef OVERRIDE_FILTER_RES_CTRL          return eg2controllervalue;
220              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  
221    
222              #ifndef OVERRIDE_FILTER_TYPE      Voice::EGInfo Voice::CalculateEG2ControllerInfluence(double eg2ControllerValue) {
223              FilterLeft.SetType(pDimRgn->VCFType);          EGInfo eg;
224              FilterRight.SetType(pDimRgn->VCFType);          eg.Attack  = (pRegion->EG2ControllerAttackInfluence)  ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerAttackInfluence)  * eg2ControllerValue : 1.0;
225              #else // override filter type          eg.Decay   = (pRegion->EG2ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerDecayInfluence)   * eg2ControllerValue : 1.0;
226              FilterLeft.SetType(OVERRIDE_FILTER_TYPE);          eg.Release = (pRegion->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerReleaseInfluence) * eg2ControllerValue : 1.0;
             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)  
227    
228              VCFCutoffCtrl.fvalue    = cutoff - FILTER_CUTOFF_MIN;          return eg;
229              VCFResonanceCtrl.fvalue = resonance;      }
230    
231              FilterUpdateCounter = -1;      void Voice::InitLFO1() {
232          }          uint16_t lfo1_internal_depth;
233          else {          switch (pRegion->LFO1Controller) {
234              VCFCutoffCtrl.controller    = 0;              case ::gig::lfo1_ctrl_internal:
235              VCFResonanceCtrl.controller = 0;                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
236                    pLFO1->ExtController = 0; // no external controller
237                    bLFO1Enabled         = (lfo1_internal_depth > 0);
238                    break;
239                case ::gig::lfo1_ctrl_modwheel:
240                    lfo1_internal_depth  = 0;
241                    pLFO1->ExtController = 1; // MIDI controller 1
242                    bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
243                    break;
244                case ::gig::lfo1_ctrl_breath:
245                    lfo1_internal_depth  = 0;
246                    pLFO1->ExtController = 2; // MIDI controller 2
247                    bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
248                    break;
249                case ::gig::lfo1_ctrl_internal_modwheel:
250                    lfo1_internal_depth  = pRegion->LFO1InternalDepth;
251                    pLFO1->ExtController = 1; // MIDI controller 1
252                    bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
253                    break;
254                case ::gig::lfo1_ctrl_internal_breath:
255                    lfo1_internal_depth  = pRegion->LFO1InternalDepth;
256                    pLFO1->ExtController = 2; // MIDI controller 2
257                    bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
258                    break;
259                default:
260                    lfo1_internal_depth  = 0;
261                    pLFO1->ExtController = 0; // no external controller
262                    bLFO1Enabled         = false;
263            }
264            if (bLFO1Enabled) {
265                pLFO1->trigger(pRegion->LFO1Frequency,
266                               start_level_min,
267                               lfo1_internal_depth,
268                               pRegion->LFO1ControlDepth,
269                               pRegion->LFO1FlipPhase,
270                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
271                pLFO1->update(pLFO1->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO1->ExtController] : 0);
272          }          }
   
         return 0; // success  
273      }      }
274    
275      /**      void Voice::InitLFO2() {
276       *  Renders the audio data for this voice for the current audio fragment.          uint16_t lfo2_internal_depth;
277       *  The sample input data can either come from RAM (cached sample or sample          switch (pRegion->LFO2Controller) {
278       *  part) or directly from disk. The output signal will be rendered by              case ::gig::lfo2_ctrl_internal:
279       *  resampling / interpolation. If this voice is a disk streaming voice and                  lfo2_internal_depth  = pRegion->LFO2InternalDepth;
280       *  the voice completely played back the cached RAM part of the sample, it                  pLFO2->ExtController = 0; // no external controller
281       *  will automatically switch to disk playback for the next RenderAudio()                  bLFO2Enabled         = (lfo2_internal_depth > 0);
282       *  call.                  break;
283       *              case ::gig::lfo2_ctrl_modwheel:
284       *  @param Samples - number of samples to be rendered in this audio fragment cycle                  lfo2_internal_depth  = 0;
285       */                  pLFO2->ExtController = 1; // MIDI controller 1
286      void Voice::Render(uint Samples) {                  bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
287                    break;
288          // select default values for synthesis mode bits              case ::gig::lfo2_ctrl_foot:
289          SYNTHESIS_MODE_SET_INTERPOLATE(SynthesisMode, (PitchBase * PitchBend) != 1.0f);                  lfo2_internal_depth  = 0;
290          SYNTHESIS_MODE_SET_CONSTPITCH(SynthesisMode, true);                  pLFO2->ExtController = 4; // MIDI controller 4
291          SYNTHESIS_MODE_SET_LOOP(SynthesisMode, false);                  bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
292                    break;
293          // Reset the synthesis parameter matrix              case ::gig::lfo2_ctrl_internal_modwheel:
294                    lfo2_internal_depth  = pRegion->LFO2InternalDepth;
295          pEngine->ResetSynthesisParameters(Event::destination_vca, this->Volume * this->CrossfadeVolume * pEngine->GlobalVolume);                  pLFO2->ExtController = 1; // MIDI controller 1
296          pEngine->ResetSynthesisParameters(Event::destination_vco, this->PitchBase);                  bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
297          pEngine->ResetSynthesisParameters(Event::destination_vcfc, VCFCutoffCtrl.fvalue);                  break;
298          pEngine->ResetSynthesisParameters(Event::destination_vcfr, VCFResonanceCtrl.fvalue);              case ::gig::lfo2_ctrl_internal_foot:
299                    lfo2_internal_depth  = pRegion->LFO2InternalDepth;
300          // Apply events to the synthesis parameter matrix                  pLFO2->ExtController = 4; // MIDI controller 4
301          ProcessEvents(Samples);                  bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
302                    break;
303          // Let all modulators write their parameter changes to the synthesis parameter matrix for the current audio fragment              default:
304          pEG1->Process(Samples, pEngine->pMIDIKeyInfo[MIDIKey].pEvents, itTriggerEvent, this->Pos, this->PitchBase * this->PitchBend, itKillEvent);                  lfo2_internal_depth  = 0;
305          pEG2->Process(Samples, pEngine->pMIDIKeyInfo[MIDIKey].pEvents, itTriggerEvent, this->Pos, this->PitchBase * this->PitchBend);                  pLFO2->ExtController = 0; // no external controller
306          if (pEG3->Process(Samples)) { // if pitch EG is active                  bLFO2Enabled         = false;
307              SYNTHESIS_MODE_SET_INTERPOLATE(SynthesisMode, true);          }
308              SYNTHESIS_MODE_SET_CONSTPITCH(SynthesisMode, false);          if (bLFO2Enabled) {
309          }              pLFO2->trigger(pRegion->LFO2Frequency,
310          pLFO1->Process(Samples);                             start_level_max,
311          pLFO2->Process(Samples);                             lfo2_internal_depth,
312          if (pLFO3->Process(Samples)) { // if pitch LFO modulation is active                             pRegion->LFO2ControlDepth,
313              SYNTHESIS_MODE_SET_INTERPOLATE(SynthesisMode, true);                             pRegion->LFO2FlipPhase,
314              SYNTHESIS_MODE_SET_CONSTPITCH(SynthesisMode, false);                             pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
315          }              pLFO2->update(pLFO2->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO2->ExtController] : 0);
   
         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);  
                     }  
   
                     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) {  
                             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 (DiskStreamRef.State == Stream::state_end && readSampleWords >= sampleWordsLeftToRead) this->PlaybackState = playback_state_end;  
                 }  
                 break;  
   
             case playback_state_end:  
                 std::cerr << "gig::Voice::Render(): entered with playback_state_end, this is a bug!\n" << std::flush;  
                 break;  
         }  
   
         // Reset synthesis event lists (except VCO, as VCO events apply channel wide currently)  
         pEngine->pSynthesisEvents[Event::destination_vca]->clear();  
         pEngine->pSynthesisEvents[Event::destination_vcfc]->clear();  
         pEngine->pSynthesisEvents[Event::destination_vcfr]->clear();  
   
         // Reset delay  
         Delay = 0;  
   
         itTriggerEvent = Pool<Event>::Iterator();  
   
         // If sample stream or release stage finished, kill the voice  
         if (PlaybackState == playback_state_end || pEG1->GetStage() == EGADSR::stage_end) KillImmediately();  
     }  
   
     /**  
      *  Resets voice variables. Should only be called if rendering process is  
      *  suspended / not running.  
      */  
     void Voice::Reset() {  
         pLFO1->Reset();  
         pLFO2->Reset();  
         pLFO3->Reset();  
         FilterLeft.Reset();  
         FilterRight.Reset();  
         DiskStreamRef.pStream = NULL;  
         DiskStreamRef.hStream = 0;  
         DiskStreamRef.State   = Stream::state_unused;  
         DiskStreamRef.OrderID = 0;  
         PlaybackState = playback_state_end;  
         itTriggerEvent = Pool<Event>::Iterator();  
         itKillEvent    = Pool<Event>::Iterator();  
     }  
   
     /**  
      *  Process the control change event lists of the engine for the current  
      *  audio fragment. Event values will be applied to the synthesis parameter  
      *  matrix.  
      *  
      *  @param Samples - number of samples to be rendered in this audio fragment cycle  
      */  
     void Voice::ProcessEvents(uint Samples) {  
   
         // dispatch control change events  
         RTList<Event>::Iterator itCCEvent = pEngine->pCCEvents->first();  
         if (Delay) { // skip events that happened before this voice was triggered  
             while (itCCEvent && itCCEvent->FragmentPos() <= Delay) ++itCCEvent;  
         }  
         while (itCCEvent) {  
             if (itCCEvent->Param.CC.Controller) { // if valid MIDI controller  
                 if (itCCEvent->Param.CC.Controller == VCFCutoffCtrl.controller) {  
                     *pEngine->pSynthesisEvents[Event::destination_vcfc]->allocAppend() = *itCCEvent;  
                 }  
                 if (itCCEvent->Param.CC.Controller == VCFResonanceCtrl.controller) {  
                     *pEngine->pSynthesisEvents[Event::destination_vcfr]->allocAppend() = *itCCEvent;  
                 }  
                 if (itCCEvent->Param.CC.Controller == pLFO1->ExtController) {  
                     pLFO1->SendEvent(itCCEvent);  
                 }  
                 if (itCCEvent->Param.CC.Controller == pLFO2->ExtController) {  
                     pLFO2->SendEvent(itCCEvent);  
                 }  
                 if (itCCEvent->Param.CC.Controller == pLFO3->ExtController) {  
                     pLFO3->SendEvent(itCCEvent);  
                 }  
                 if (pDimRgn->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&  
                     itCCEvent->Param.CC.Controller == pDimRgn->AttenuationController.controller_number) { // if crossfade event  
                     *pEngine->pSynthesisEvents[Event::destination_vca]->allocAppend() = *itCCEvent;  
                 }  
             }  
   
             ++itCCEvent;  
316          }          }
317        }
318    
319        void Voice::InitLFO3() {
320          // process pitch events          uint16_t lfo3_internal_depth;
321          {          switch (pRegion->LFO3Controller) {
322              RTList<Event>* pVCOEventList = pEngine->pSynthesisEvents[Event::destination_vco];              case ::gig::lfo3_ctrl_internal:
323              RTList<Event>::Iterator itVCOEvent = pVCOEventList->first();                  lfo3_internal_depth  = pRegion->LFO3InternalDepth;
324              if (Delay) { // skip events that happened before this voice was triggered                  pLFO3->ExtController = 0; // no external controller
325                  while (itVCOEvent && itVCOEvent->FragmentPos() <= Delay) ++itVCOEvent;                  bLFO3Enabled         = (lfo3_internal_depth > 0);
326              }                  break;
327              // apply old pitchbend value until first pitch event occurs              case ::gig::lfo3_ctrl_modwheel:
328              if (this->PitchBend != 1.0) {                  lfo3_internal_depth  = 0;
329                  uint end = (itVCOEvent) ? itVCOEvent->FragmentPos() : Samples;                  pLFO3->ExtController = 1; // MIDI controller 1
330                  for (uint i = Delay; i < end; i++) {                  bLFO3Enabled         = (pRegion->LFO3ControlDepth > 0);
331                      pEngine->pSynthesisParameters[Event::destination_vco][i] *= this->PitchBend;                  break;
332                  }              case ::gig::lfo3_ctrl_aftertouch:
333              }                  lfo3_internal_depth  = 0;
334              float pitch;                  pLFO3->ExtController = 128;
335              while (itVCOEvent) {                  bLFO3Enabled         = true;
336                  RTList<Event>::Iterator itNextVCOEvent = itVCOEvent;                  break;
337                  ++itNextVCOEvent;              case ::gig::lfo3_ctrl_internal_modwheel:
338                    lfo3_internal_depth  = pRegion->LFO3InternalDepth;
339                  // calculate the influence length of this event (in sample points)                  pLFO3->ExtController = 1; // MIDI controller 1
340                  uint end = (itNextVCOEvent) ? itNextVCOEvent->FragmentPos() : Samples;                  bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
341                    break;
342                  pitch = RTMath::CentsToFreqRatio(((double) itVCOEvent->Param.Pitch.Pitch / 8192.0) * 200.0); // +-two semitones = +-200 cents              case ::gig::lfo3_ctrl_internal_aftertouch:
343                    lfo3_internal_depth  = pRegion->LFO3InternalDepth;
344                  // apply pitch value to the pitch parameter sequence                  pLFO1->ExtController = 128;
345                  for (uint i = itVCOEvent->FragmentPos(); i < end; i++) {                  bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
346                      pEngine->pSynthesisParameters[Event::destination_vco][i] *= pitch;                  break;
347                  }              default:
348                    lfo3_internal_depth  = 0;
349                  itVCOEvent = itNextVCOEvent;                  pLFO3->ExtController = 0; // no external controller
350              }                  bLFO3Enabled         = false;
351              if (!pVCOEventList->isEmpty()) {          }
352                  this->PitchBend = pitch;          if (bLFO3Enabled) {
353                  SYNTHESIS_MODE_SET_INTERPOLATE(SynthesisMode, true);              pLFO3->trigger(pRegion->LFO3Frequency,
354                  SYNTHESIS_MODE_SET_CONSTPITCH(SynthesisMode, false);                             start_level_mid,
355              }                             lfo3_internal_depth,
356                               pRegion->LFO3ControlDepth,
357                               false,
358                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
359                pLFO3->update(pLFO3->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO3->ExtController] : 0);
360          }          }
361        }
362    
363          // process volume / attenuation events (TODO: we only handle and _expect_ crossfade events here ATM !)      float Voice::CalculateCutoffBase(uint8_t MIDIKeyVelocity) {
364          {          float cutoff = pRegion->GetVelocityCutoff(MIDIKeyVelocity);
365              RTList<Event>* pVCAEventList = pEngine->pSynthesisEvents[Event::destination_vca];          if (pRegion->VCFKeyboardTracking) {
366              RTList<Event>::Iterator itVCAEvent = pVCAEventList->first();              cutoff *= exp((MIDIKeyVelocity - pRegion->VCFKeyboardTrackingBreakpoint) * 0.057762265f); // (ln(2) / 12)
367              if (Delay) { // skip events that happened before this voice was triggered          }
368                  while (itVCAEvent && itVCAEvent->FragmentPos() <= Delay) ++itVCAEvent;          return cutoff;
369              }      }
370              float crossfadevolume;  
371              while (itVCAEvent) {      float Voice::CalculateFinalCutoff(float cutoffBase) {
372                  RTList<Event>::Iterator itNextVCAEvent = itVCAEvent;          int cvalue;
373                  ++itNextVCAEvent;          if (VCFCutoffCtrl.controller) {
374                cvalue = GetGigEngineChannel()->ControllerTable[VCFCutoffCtrl.controller];
375                  // calculate the influence length of this event (in sample points)              if (pRegion->VCFCutoffControllerInvert) cvalue = 127 - cvalue;
376                  uint end = (itNextVCAEvent) ? itNextVCAEvent->FragmentPos() : Samples;              // VCFVelocityScale in this case means Minimum cutoff
377                if (cvalue < pRegion->VCFVelocityScale) cvalue = pRegion->VCFVelocityScale;
                 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;  
378          }          }
379            else {
380          // process filter cutoff events              cvalue = pRegion->VCFCutoff;
         {  
             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  
381          }          }
382            float fco = cutoffBase * float(cvalue);
383            if (fco > 127.0f) fco = 127.0f;
384    
385          // process filter resonance events          return fco;
         {  
             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  
         }  
386      }      }
387    
388      /**      uint8_t Voice::GetVCFCutoffCtrl() {
389       * Calculate all necessary, final biquad filter parameters.          uint8_t ctrl;
390       *          switch (pRegion->VCFCutoffController) {
391       * @param Samples - number of samples to be rendered in this audio fragment cycle              case ::gig::vcf_cutoff_ctrl_modwheel:
392       */                  ctrl = 1;
393      void Voice::CalculateBiquadParameters(uint Samples) {                  break;
394          biquad_param_t bqbase;              case ::gig::vcf_cutoff_ctrl_effect1:
395          biquad_param_t bqmain;                  ctrl = 12;
396          float prev_cutoff = pEngine->pSynthesisParameters[Event::destination_vcfc][0];                  break;
397          float prev_res    = pEngine->pSynthesisParameters[Event::destination_vcfr][0];              case ::gig::vcf_cutoff_ctrl_effect2:
398          FilterLeft.SetParameters(&bqbase, &bqmain, prev_cutoff, prev_res, pEngine->SampleRate);                  ctrl = 13;
399          FilterRight.SetParameters(&bqbase, &bqmain, prev_cutoff, prev_res, pEngine->SampleRate);                  break;
400          pEngine->pBasicFilterParameters[0] = bqbase;              case ::gig::vcf_cutoff_ctrl_breath:
401          pEngine->pMainFilterParameters[0]  = bqmain;                  ctrl = 2;
402                    break;
403          float* bq;              case ::gig::vcf_cutoff_ctrl_foot:
404          for (int i = 1; i < Samples; i++) {                  ctrl = 4;
405              // recalculate biquad parameters if cutoff or resonance differ from previous sample point                  break;
406              if (!(i & FILTER_UPDATE_MASK)) {              case ::gig::vcf_cutoff_ctrl_sustainpedal:
407                  if (pEngine->pSynthesisParameters[Event::destination_vcfr][i] != prev_res ||                  ctrl = 64;
408                      pEngine->pSynthesisParameters[Event::destination_vcfc][i] != prev_cutoff)                  break;
409                  {              case ::gig::vcf_cutoff_ctrl_softpedal:
410                      prev_cutoff = pEngine->pSynthesisParameters[Event::destination_vcfc][i];                  ctrl = 67;
411                      prev_res    = pEngine->pSynthesisParameters[Event::destination_vcfr][i];                  break;
412                      FilterLeft.SetParameters(&bqbase, &bqmain, prev_cutoff, prev_res, pEngine->SampleRate);              case ::gig::vcf_cutoff_ctrl_genpurpose7:
413                      FilterRight.SetParameters(&bqbase, &bqmain, prev_cutoff, prev_res, pEngine->SampleRate);                  ctrl = 82;
414                  }                  break;
415              }              case ::gig::vcf_cutoff_ctrl_genpurpose8:
416                    ctrl = 83;
417              //same as 'pEngine->pBasicFilterParameters[i] = bqbase;'                  break;
418              bq    = (float*) &pEngine->pBasicFilterParameters[i];              case ::gig::vcf_cutoff_ctrl_aftertouch:
419              bq[0] = bqbase.b0;                  ctrl = 128;
420              bq[1] = bqbase.b1;                  break;
421              bq[2] = bqbase.b2;              case ::gig::vcf_cutoff_ctrl_none:
422              bq[3] = bqbase.a1;              default:
423              bq[4] = bqbase.a2;                  ctrl = 0;
424                    break;
             // 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;  
425          }          }
426    
427            return ctrl;
428      }      }
429    
430      /**      uint8_t Voice::GetVCFResonanceCtrl() {
431       *  Synthesizes the current audio fragment for this voice.          uint8_t ctrl;
432       *          switch (pRegion->VCFResonanceController) {
433       *  @param Samples - number of sample points to be rendered in this audio              case ::gig::vcf_res_ctrl_genpurpose3:
434       *                   fragment cycle                  ctrl = 18;
435       *  @param pSrc    - pointer to input sample data                  break;
436       *  @param Skip    - number of sample points to skip in output buffer              case ::gig::vcf_res_ctrl_genpurpose4:
437       */                  ctrl = 19;
438      void Voice::Synthesize(uint Samples, sample_t* pSrc, uint Skip) {                  break;
439          RunSynthesisFunction(SynthesisMode, *this, Samples, pSrc, Skip);              case ::gig::vcf_res_ctrl_genpurpose5:
440      }                  ctrl = 80;
441                    break;
442      /**              case ::gig::vcf_res_ctrl_genpurpose6:
443       *  Immediately kill the voice. This method should not be used to kill                  ctrl = 81;
444       *  a normal, active voice, because it doesn't take care of things like                  break;
445       *  fading down the volume level to avoid clicks and regular processing              case ::gig::vcf_res_ctrl_none:
446       *  until the kill event actually occured!              default:
447       *                  ctrl = 0;
448       *  @see Kill()          }
      */  
     void Voice::KillImmediately() {  
         if (DiskVoice && DiskStreamRef.State != Stream::state_unused) {  
             pDiskThread->OrderDeletionOfStream(&DiskStreamRef);  
         }  
         Reset();  
     }  
   
     /**  
      *  Kill the voice in regular sense. Let the voice render audio until  
      *  the kill event actually occured and then fade down the volume level  
      *  very quickly and let the voice die finally. Unlike a normal release  
      *  of a voice, a kill process cannot be cancalled and is therefore  
      *  usually used for voice stealing and key group conflicts.  
      *  
      *  @param itKillEvent - event which caused the voice to be killed  
      */  
     void Voice::Kill(Pool<Event>::Iterator& itKillEvent) {  
         //FIXME: just two sanity checks for debugging, can be removed  
         if (!itKillEvent) dmsg(1,("gig::Voice::Kill(): ERROR, !itKillEvent !!!\n"));  
         if (itKillEvent && !itKillEvent.isValid()) dmsg(1,("gig::Voice::Kill(): ERROR, itKillEvent invalid !!!\n"));  
449    
450          if (itTriggerEvent && itKillEvent->FragmentPos() <= itTriggerEvent->FragmentPos()) return;          return ctrl;
         this->itKillEvent = itKillEvent;  
451      }      }
452    
453        void Voice::TriggerEG1(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
454            EG1.trigger(uint(RgnInfo.EG1PreAttack),
455                        RgnInfo.EG1Attack * egInfo.Attack,
456                        RgnInfo.EG1Hold,
457                        RgnInfo.EG1Decay1 * egInfo.Decay * velrelease,
458                        RgnInfo.EG1Decay2 * egInfo.Decay * velrelease,
459                        RgnInfo.EG1InfiniteSustain,
460                        uint(RgnInfo.EG1Sustain),
461                        RgnInfo.EG1Release * egInfo.Release * velrelease,
462                        velocityAttenuation,
463                        sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
464        }
465  }} // namespace LinuxSampler::gig  }} // namespace LinuxSampler::gig
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