/[svn]/linuxsampler/trunk/src/engines/gig/Voice.cpp
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revision 783 by persson, Sun Oct 2 14:40:52 2005 UTC revision 2114 by persson, Tue Aug 10 12:05:19 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 Christian Schoenebeck                              *   *   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 24  Line 25 
25  #include "../../common/Features.h"  #include "../../common/Features.h"
26  #include "Synthesizer.h"  #include "Synthesizer.h"
27  #include "Profiler.h"  #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        }
39    
40      float Voice::CalculateFilterCutoffCoeff() {      Voice::~Voice() {
         return log(CONFIG_FILTER_CUTOFF_MAX / CONFIG_FILTER_CUTOFF_MIN);  
41      }      }
42    
43      Voice::Voice() {      EngineChannel* Voice::GetGigEngineChannel() {
44          pEngine     = NULL;          return static_cast<EngineChannel*>(pEngineChannel);
45          pDiskThread = NULL;      }
         PlaybackState = playback_state_end;  
         pLFO1 = new LFOUnsigned(1.0f);  // amplitude EG (0..1 range)  
         pLFO2 = new LFOUnsigned(1.0f);  // filter EG (0..1 range)  
         pLFO3 = new LFOSigned(1200.0f); // pitch EG (-1200..+1200 range)  
         KeyGroup = 0;  
         SynthesisMode = 0; // set all mode bits to 0 first  
         // select synthesis implementation (currently either pure C++ or MMX+SSE(1))  
         #if CONFIG_ASM && ARCH_X86  
         SYNTHESIS_MODE_SET_IMPLEMENTATION(SynthesisMode, Features::supportsMMX() && Features::supportsSSE());  
         #else  
         SYNTHESIS_MODE_SET_IMPLEMENTATION(SynthesisMode, false);  
         #endif  
         SYNTHESIS_MODE_SET_PROFILING(SynthesisMode, Profiler::isEnabled());  
46    
47          finalSynthesisParameters.filterLeft.Reset();      void Voice::SetEngine(LinuxSampler::Engine* pEngine) {
48          finalSynthesisParameters.filterRight.Reset();          Engine* engine = static_cast<Engine*>(pEngine);
49            this->pEngine     = engine;
50            this->pDiskThread = engine->pDiskThread;
51            dmsg(6,("Voice::SetEngine()\n"));
52      }      }
53    
54      Voice::~Voice() {      Voice::SampleInfo Voice::GetSampleInfo() {
55          if (pLFO1) delete pLFO1;          SampleInfo si;
56          if (pLFO2) delete pLFO2;          si.SampleRate       = pSample->SamplesPerSecond;
57          if (pLFO3) delete pLFO3;          si.ChannelCount     = pSample->Channels;
58            si.FrameSize        = pSample->FrameSize;
59            si.BitDepth         = pSample->BitDepth;
60            si.TotalFrameCount  = pSample->SamplesTotal;
61    
62            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            return si;
69      }      }
70    
71      void Voice::SetEngine(Engine* pEngine) {      Voice::RegionInfo Voice::GetRegionInfo() {
72          this->pEngine     = pEngine;          RegionInfo ri;
73          this->pDiskThread = pEngine->pDiskThread;          ri.UnityNote = pRegion->UnityNote;
74          dmsg(6,("Voice::SetEngine()\n"));          ri.FineTune  = pRegion->FineTune;
75            ri.Pan       = pRegion->Pan;
76            ri.SampleStartOffset = pRegion->SampleStartOffset;
77    
78            ri.EG1PreAttack        = pRegion->EG1PreAttack;
79            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            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            ri.EG3Attack     = pRegion->EG3Attack;
96            ri.EG3Depth      = pRegion->EG3Depth;
97            ri.VCFEnabled    = pRegion->VCFEnabled;
98            ri.VCFType       = pRegion->VCFType;
99            ri.VCFResonance  = pRegion->VCFResonance;
100    
101            ri.ReleaseTriggerDecay = 0.01053 * (256 >> pRegion->ReleaseTriggerDecay);
102    
103            return ri;
104      }      }
105    
106      /**      Voice::InstrumentInfo Voice::GetInstrumentInfo() {
107       *  Initializes and triggers the voice, a disk stream will be launched if          InstrumentInfo ii;
108       *  needed.          ii.FineTune = GetGigEngineChannel()->pInstrument->FineTune;
109       *          ii.PitchbendRange = GetGigEngineChannel()->pInstrument->PitchbendRange;
110       *  @param pEngineChannel - engine channel on which this voice was ordered  
111       *  @param itNoteOnEvent  - event that caused triggering of this voice          return ii;
112       *  @param PitchBend      - MIDI detune factor (-8192 ... +8191)      }
113       *  @param pDimRgn        - points to the dimension region which provides sample wave(s) and articulation data  
114       *  @param VoiceType      - type of this voice      double Voice::GetSampleAttenuation() {
115       *  @param iKeyGroup      - a value > 0 defines a key group in which this voice is member of          return pRegion->SampleAttenuation;
116       *  @returns 0 on success, a value < 0 if the voice wasn't triggered      }
117       *           (either due to an error or e.g. because no region is  
118       *           defined for the given key)      double Voice::GetVelocityAttenuation(uint8_t MIDIKeyVelocity) {
119       */          return pRegion->GetVelocityAttenuation(MIDIKeyVelocity);
120      int Voice::Trigger(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent, int PitchBend, ::gig::DimensionRegion* pDimRgn, type_t VoiceType, int iKeyGroup) {      }
121          this->pEngineChannel = pEngineChannel;  
122          this->pDimRgn        = pDimRgn;      double Voice::GetVelocityRelease(uint8_t MIDIKeyVelocity) {
123            return pRegion->GetVelocityRelease(MIDIKeyVelocity);
124          #if CONFIG_DEVMODE      }
125          if (itNoteOnEvent->FragmentPos() > pEngine->MaxSamplesPerCycle) { // just a sanity check for debugging  
126              dmsg(1,("Voice::Trigger(): ERROR, TriggerDelay > Totalsamples\n"));      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          #endif // CONFIG_DEVMODE              if (pRegion->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&
129                    itEvent->Param.CC.Controller == pRegion->AttenuationController.controller_number) {
130          Type            = VoiceType;                  CrossfadeSmoother.update(AbstractEngine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.CC.Value)]);
131          MIDIKey         = itNoteOnEvent->Param.Note.Key;              }
         PlaybackState   = playback_state_init; // mark voice as triggered, but no audio rendered yet  
         Delay           = itNoteOnEvent->FragmentPos();  
         itTriggerEvent  = itNoteOnEvent;  
         itKillEvent     = Pool<Event>::Iterator();  
         KeyGroup        = iKeyGroup;  
         pSample         = pDimRgn->pSample; // sample won't change until the voice is finished  
   
         // calculate volume  
         const double velocityAttenuation = pDimRgn->GetVelocityAttenuation(itNoteOnEvent->Param.Note.Velocity);  
   
         Volume = velocityAttenuation / 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;  
   
         // the volume of release triggered samples depends on note length  
         if (Type == type_release_trigger) {  
             float noteLength = float(pEngine->FrameTime + Delay -  
                                      pEngineChannel->pMIDIKeyInfo[MIDIKey].NoteOnTime) / pEngine->SampleRate;  
             float attenuation = 1 - 0.01053 * (256 >> pDimRgn->ReleaseTriggerDecay) * noteLength;  
             if (attenuation <= 0) return -1;  
             Volume *= attenuation;  
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          // select channel mode (mono or stereo)          VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of fFinalCutoff next time
145          SYNTHESIS_MODE_SET_CHANNELS(SynthesisMode, pSample->Channels == 2);          fFinalCutoff = cutoff;
146        }
147    
148          // get starting crossfade volume level      double Voice::CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity) {
149          switch (pDimRgn->AttenuationController.type) {          float crossfadeVolume;
150            switch (pRegion->AttenuationController.type) {
151              case ::gig::attenuation_ctrl_t::type_channelaftertouch:              case ::gig::attenuation_ctrl_t::type_channelaftertouch:
152                  CrossfadeVolume = 1.0f; //TODO: aftertouch not supported yet                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[128])];
153                  break;                  break;
154              case ::gig::attenuation_ctrl_t::type_velocity:              case ::gig::attenuation_ctrl_t::type_velocity:
155                  CrossfadeVolume = CrossfadeAttenuation(itNoteOnEvent->Param.Note.Velocity);                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(MIDIKeyVelocity)];
156                  break;                  break;
157              case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate              case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate
158                  CrossfadeVolume = CrossfadeAttenuation(pEngineChannel->ControllerTable[pDimRgn->AttenuationController.controller_number]);                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[pRegion->AttenuationController.controller_number])];
159                  break;                  break;
160              case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined              case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined
161              default:              default:
162                  CrossfadeVolume = 1.0f;                  crossfadeVolume = 1.0f;
163          }          }
164    
165          PanLeft  = 1.0f - float(RTMath::Max(pDimRgn->Pan, 0)) /  63.0f;          return crossfadeVolume;
166          PanRight = 1.0f - float(RTMath::Min(pDimRgn->Pan, 0)) / -64.0f;      }
   
         finalSynthesisParameters.dPos = pDimRgn->SampleStartOffset; // offset where we should start playback of sample (0 - 2000 sample points)  
         Pos = pDimRgn->SampleStartOffset;  
   
         // 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 << CONFIG_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;  
                 loop.uiTotalCycles = pSample->LoopPlayCount;  
                 loop.uiCyclesLeft  = pSample->LoopPlayCount;  
                 loop.uiStart       = pSample->LoopStart;  
                 loop.uiEnd         = pSample->LoopEnd;  
                 loop.uiSize        = pSample->LoopSize;  
             }  
             else RAMLoop = false;  
167    
168              if (pDiskThread->OrderNewStream(&DiskStreamRef, pSample, MaxRAMPos, !RAMLoop) < 0) {      double Voice::GetEG1ControllerValue(uint8_t MIDIKeyVelocity) {
169                  dmsg(1,("Disk stream order failed!\n"));          double eg1controllervalue = 0;
170                  KillImmediately();          switch (pRegion->EG1Controller.type) {
171                  return -1;              case ::gig::eg1_ctrl_t::type_none: // no controller defined
172              }                  eg1controllervalue = 0;
173              dmsg(4,("Disk voice launched (cached samples: %d, total Samples: %d, MaxRAMPos: %d, RAMLooping: %s)\n", cachedsamples, pSample->SamplesTotal, MaxRAMPos, (RAMLoop) ? "yes" : "no"));                  break;
174          }              case ::gig::eg1_ctrl_t::type_channelaftertouch:
175          else { // RAM only voice                  eg1controllervalue = GetGigEngineChannel()->ControllerTable[128];
176              MaxRAMPos = cachedsamples;                  break;
177              if (pSample->Loops) {              case ::gig::eg1_ctrl_t::type_velocity:
178                  RAMLoop           = true;                  eg1controllervalue = MIDIKeyVelocity;
179                  loop.uiCyclesLeft = pSample->LoopPlayCount;                  break;
180              }              case ::gig::eg1_ctrl_t::type_controlchange: // MIDI control change controller
181              else RAMLoop = false;                  eg1controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG1Controller.controller_number];
182              dmsg(4,("RAM only voice launched (Looping: %s)\n", (RAMLoop) ? "yes" : "no"));                  break;
183          }          }
184            if (pRegion->EG1ControllerInvert) eg1controllervalue = 127 - eg1controllervalue;
185    
186            return eg1controllervalue;
187        }
188    
189          // calculate initial pitch value      Voice::EGInfo Voice::CalculateEG1ControllerInfluence(double eg1ControllerValue) {
190          {          EGInfo eg;
191              double pitchbasecents = pDimRgn->FineTune + (int) pEngine->ScaleTuning[MIDIKey % 12];          // (eg1attack is different from the others)
192              if (pDimRgn->PitchTrack) pitchbasecents += (MIDIKey - (int) pDimRgn->UnityNote) * 100;          eg.Attack  = (pRegion->EG1ControllerAttackInfluence)  ?
193              this->PitchBase = RTMath::CentsToFreqRatio(pitchbasecents) * (double(pSample->SamplesPerSecond) / double(pEngine->SampleRate));              1 + 0.031 * (double) (pRegion->EG1ControllerAttackInfluence == 1 ?
194              this->PitchBend = RTMath::CentsToFreqRatio(((double) PitchBend / 8192.0) * 200.0); // pitchbend wheel +-2 semitones = 200 cents                                    1 : 1 << pRegion->EG1ControllerAttackInfluence) * eg1ControllerValue : 1.0;
195          }          eg.Decay   = (pRegion->EG1ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerDecayInfluence)   * eg1ControllerValue : 1.0;
196            eg.Release = (pRegion->EG1ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerReleaseInfluence) * eg1ControllerValue : 1.0;
         // the length of the decay and release curves are dependent on the velocity  
         const double velrelease = 1 / pDimRgn->GetVelocityRelease(itNoteOnEvent->Param.Note.Velocity);  
   
         // 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 = pEngineChannel->ControllerTable[pDimRgn->EG1Controller.controller_number];  
                     break;  
             }  
             if (pDimRgn->EG1ControllerInvert) eg1controllervalue = 127 - eg1controllervalue;  
   
             // calculate influence of EG1 controller on EG1's parameters  
             // (eg1attack is different from the others)  
             double eg1attack  = (pDimRgn->EG1ControllerAttackInfluence)  ?  
                 1 + 0.031 * (double) (pDimRgn->EG1ControllerAttackInfluence == 1 ?  
                                       1 : 1 << pDimRgn->EG1ControllerAttackInfluence) * eg1controllervalue : 1.0;  
             double eg1decay   = (pDimRgn->EG1ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pDimRgn->EG1ControllerDecayInfluence)   * eg1controllervalue : 1.0;  
             double eg1release = (pDimRgn->EG1ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pDimRgn->EG1ControllerReleaseInfluence) * eg1controllervalue : 1.0;  
   
             EG1.trigger(pDimRgn->EG1PreAttack,  
                         pDimRgn->EG1Attack * eg1attack,  
                         pDimRgn->EG1Hold,  
                         pDimRgn->EG1Decay1 * eg1decay * velrelease,  
                         pDimRgn->EG1Decay2 * eg1decay * velrelease,  
                         pDimRgn->EG1InfiniteSustain,  
                         pDimRgn->EG1Sustain,  
                         pDimRgn->EG1Release * eg1release * velrelease,  
                         velocityAttenuation,  
                         pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
         }  
   
197    
198          // setup EG 2 (VCF Cutoff EG)          return eg;
199          {      }
             // get current value of EG2 controller  
             double eg2controllervalue;  
             switch (pDimRgn->EG2Controller.type) {  
                 case ::gig::eg2_ctrl_t::type_none: // no controller defined  
                     eg2controllervalue = 0;  
                     break;  
                 case ::gig::eg2_ctrl_t::type_channelaftertouch:  
                     eg2controllervalue = 0; // TODO: aftertouch not yet supported  
                     break;  
                 case ::gig::eg2_ctrl_t::type_velocity:  
                     eg2controllervalue = itNoteOnEvent->Param.Note.Velocity;  
                     break;  
                 case ::gig::eg2_ctrl_t::type_controlchange: // MIDI control change controller  
                     eg2controllervalue = pEngineChannel->ControllerTable[pDimRgn->EG2Controller.controller_number];  
                     break;  
             }  
             if (pDimRgn->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue;  
200    
201              // calculate influence of EG2 controller on EG2's parameters      double Voice::GetEG2ControllerValue(uint8_t MIDIKeyVelocity) {
202              double eg2attack  = (pDimRgn->EG2ControllerAttackInfluence)  ? 1 + 0.00775 * (double) (1 << pDimRgn->EG2ControllerAttackInfluence)  * eg2controllervalue : 1.0;          double eg2controllervalue = 0;
203              double eg2decay   = (pDimRgn->EG2ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pDimRgn->EG2ControllerDecayInfluence)   * eg2controllervalue : 1.0;          switch (pRegion->EG2Controller.type) {
204              double eg2release = (pDimRgn->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pDimRgn->EG2ControllerReleaseInfluence) * eg2controllervalue : 1.0;              case ::gig::eg2_ctrl_t::type_none: // no controller defined
205                    eg2controllervalue = 0;
206              EG2.trigger(pDimRgn->EG2PreAttack,                  break;
207                          pDimRgn->EG2Attack * eg2attack,              case ::gig::eg2_ctrl_t::type_channelaftertouch:
208                          false,                  eg2controllervalue = GetGigEngineChannel()->ControllerTable[128];
209                          pDimRgn->EG2Decay1 * eg2decay * velrelease,                  break;
210                          pDimRgn->EG2Decay2 * eg2decay * velrelease,              case ::gig::eg2_ctrl_t::type_velocity:
211                          pDimRgn->EG2InfiniteSustain,                  eg2controllervalue = MIDIKeyVelocity;
212                          pDimRgn->EG2Sustain,                  break;
213                          pDimRgn->EG2Release * eg2release * velrelease,              case ::gig::eg2_ctrl_t::type_controlchange: // MIDI control change controller
214                          velocityAttenuation,                  eg2controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG2Controller.controller_number];
215                          pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);                  break;
216          }          }
217            if (pRegion->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue;
218    
219            return eg2controllervalue;
220        }
221    
222          // setup EG 3 (VCO EG)      Voice::EGInfo Voice::CalculateEG2ControllerInfluence(double eg2ControllerValue) {
223          {          EGInfo eg;
224            double eg3depth = RTMath::CentsToFreqRatio(pDimRgn->EG3Depth);          eg.Attack  = (pRegion->EG2ControllerAttackInfluence)  ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerAttackInfluence)  * eg2ControllerValue : 1.0;
225            EG3.trigger(eg3depth, pDimRgn->EG3Attack, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);          eg.Decay   = (pRegion->EG2ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerDecayInfluence)   * eg2ControllerValue : 1.0;
226          }          eg.Release = (pRegion->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerReleaseInfluence) * eg2ControllerValue : 1.0;
227    
228            return eg;
229        }
230    
231          // setup LFO 1 (VCA LFO)      void Voice::InitLFO1() {
232          {          uint16_t lfo1_internal_depth;
233              uint16_t lfo1_internal_depth;          switch (pRegion->LFO1Controller) {
234              switch (pDimRgn->LFO1Controller) {              case ::gig::lfo1_ctrl_internal:
235                  case ::gig::lfo1_ctrl_internal:                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
236                      lfo1_internal_depth  = pDimRgn->LFO1InternalDepth;                  pLFO1->ExtController = 0; // no external controller
237                      pLFO1->ExtController = 0; // no external controller                  bLFO1Enabled         = (lfo1_internal_depth > 0);
238                      bLFO1Enabled         = (lfo1_internal_depth > 0);                  break;
239                      break;              case ::gig::lfo1_ctrl_modwheel:
240                  case ::gig::lfo1_ctrl_modwheel:                  lfo1_internal_depth  = 0;
241                      lfo1_internal_depth  = 0;                  pLFO1->ExtController = 1; // MIDI controller 1
242                      pLFO1->ExtController = 1; // MIDI controller 1                  bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
243                      bLFO1Enabled         = (pDimRgn->LFO1ControlDepth > 0);                  break;
244                      break;              case ::gig::lfo1_ctrl_breath:
245                  case ::gig::lfo1_ctrl_breath:                  lfo1_internal_depth  = 0;
246                      lfo1_internal_depth  = 0;                  pLFO1->ExtController = 2; // MIDI controller 2
247                      pLFO1->ExtController = 2; // MIDI controller 2                  bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
248                      bLFO1Enabled         = (pDimRgn->LFO1ControlDepth > 0);                  break;
249                      break;              case ::gig::lfo1_ctrl_internal_modwheel:
250                  case ::gig::lfo1_ctrl_internal_modwheel:                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
251                      lfo1_internal_depth  = pDimRgn->LFO1InternalDepth;                  pLFO1->ExtController = 1; // MIDI controller 1
252                      pLFO1->ExtController = 1; // MIDI controller 1                  bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
253                      bLFO1Enabled         = (lfo1_internal_depth > 0 || pDimRgn->LFO1ControlDepth > 0);                  break;
254                      break;              case ::gig::lfo1_ctrl_internal_breath:
255                  case ::gig::lfo1_ctrl_internal_breath:                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
256                      lfo1_internal_depth  = pDimRgn->LFO1InternalDepth;                  pLFO1->ExtController = 2; // MIDI controller 2
257                      pLFO1->ExtController = 2; // MIDI controller 2                  bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
258                      bLFO1Enabled         = (lfo1_internal_depth > 0 || pDimRgn->LFO1ControlDepth > 0);                  break;
259                      break;              default:
260                  default:                  lfo1_internal_depth  = 0;
261                      lfo1_internal_depth  = 0;                  pLFO1->ExtController = 0; // no external controller
262                      pLFO1->ExtController = 0; // no external controller                  bLFO1Enabled         = false;
263                      bLFO1Enabled         = false;          }
264              }          if (bLFO1Enabled) {
265              if (bLFO1Enabled) pLFO1->trigger(pDimRgn->LFO1Frequency,              pLFO1->trigger(pRegion->LFO1Frequency,
266                                               start_level_max,                             start_level_min,
267                                               lfo1_internal_depth,                             lfo1_internal_depth,
268                                               pDimRgn->LFO1ControlDepth,                             pRegion->LFO1ControlDepth,
269                                               pDimRgn->LFO1FlipPhase,                             pRegion->LFO1FlipPhase,
270                                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);                             pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
271                pLFO1->update(pLFO1->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO1->ExtController] : 0);
272          }          }
273        }
274    
275        void Voice::InitLFO2() {
276          // setup LFO 2 (VCF Cutoff LFO)          uint16_t lfo2_internal_depth;
277          {          switch (pRegion->LFO2Controller) {
278              uint16_t lfo2_internal_depth;              case ::gig::lfo2_ctrl_internal:
279              switch (pDimRgn->LFO2Controller) {                  lfo2_internal_depth  = pRegion->LFO2InternalDepth;
280                  case ::gig::lfo2_ctrl_internal:                  pLFO2->ExtController = 0; // no external controller
281                      lfo2_internal_depth  = pDimRgn->LFO2InternalDepth;                  bLFO2Enabled         = (lfo2_internal_depth > 0);
282                      pLFO2->ExtController = 0; // no external controller                  break;
283                      bLFO2Enabled         = (lfo2_internal_depth > 0);              case ::gig::lfo2_ctrl_modwheel:
284                      break;                  lfo2_internal_depth  = 0;
285                  case ::gig::lfo2_ctrl_modwheel:                  pLFO2->ExtController = 1; // MIDI controller 1
286                      lfo2_internal_depth  = 0;                  bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
287                      pLFO2->ExtController = 1; // MIDI controller 1                  break;
288                      bLFO2Enabled         = (pDimRgn->LFO2ControlDepth > 0);              case ::gig::lfo2_ctrl_foot:
289                      break;                  lfo2_internal_depth  = 0;
290                  case ::gig::lfo2_ctrl_foot:                  pLFO2->ExtController = 4; // MIDI controller 4
291                      lfo2_internal_depth  = 0;                  bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
292                      pLFO2->ExtController = 4; // MIDI controller 4                  break;
293                      bLFO2Enabled         = (pDimRgn->LFO2ControlDepth > 0);              case ::gig::lfo2_ctrl_internal_modwheel:
294                      break;                  lfo2_internal_depth  = pRegion->LFO2InternalDepth;
295                  case ::gig::lfo2_ctrl_internal_modwheel:                  pLFO2->ExtController = 1; // MIDI controller 1
296                      lfo2_internal_depth  = pDimRgn->LFO2InternalDepth;                  bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
297                      pLFO2->ExtController = 1; // MIDI controller 1                  break;
298                      bLFO2Enabled         = (lfo2_internal_depth > 0 || pDimRgn->LFO2ControlDepth > 0);              case ::gig::lfo2_ctrl_internal_foot:
299                      break;                  lfo2_internal_depth  = pRegion->LFO2InternalDepth;
300                  case ::gig::lfo2_ctrl_internal_foot:                  pLFO2->ExtController = 4; // MIDI controller 4
301                      lfo2_internal_depth  = pDimRgn->LFO2InternalDepth;                  bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
302                      pLFO2->ExtController = 4; // MIDI controller 4                  break;
303                      bLFO2Enabled         = (lfo2_internal_depth > 0 || pDimRgn->LFO2ControlDepth > 0);              default:
304                      break;                  lfo2_internal_depth  = 0;
305                  default:                  pLFO2->ExtController = 0; // no external controller
306                      lfo2_internal_depth  = 0;                  bLFO2Enabled         = false;
307                      pLFO2->ExtController = 0; // no external controller          }
308                      bLFO2Enabled         = false;          if (bLFO2Enabled) {
309              }              pLFO2->trigger(pRegion->LFO2Frequency,
310              if (bLFO2Enabled) pLFO2->trigger(pDimRgn->LFO2Frequency,                             start_level_max,
311                                               start_level_max,                             lfo2_internal_depth,
312                                               lfo2_internal_depth,                             pRegion->LFO2ControlDepth,
313                                               pDimRgn->LFO2ControlDepth,                             pRegion->LFO2FlipPhase,
314                                               pDimRgn->LFO2FlipPhase,                             pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
315                                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);              pLFO2->update(pLFO2->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO2->ExtController] : 0);
316          }          }
317        }
318    
319        void Voice::InitLFO3() {
320          // setup LFO 3 (VCO LFO)          uint16_t lfo3_internal_depth;
321          {          switch (pRegion->LFO3Controller) {
322              uint16_t lfo3_internal_depth;              case ::gig::lfo3_ctrl_internal:
323              switch (pDimRgn->LFO3Controller) {                  lfo3_internal_depth  = pRegion->LFO3InternalDepth;
324                  case ::gig::lfo3_ctrl_internal:                  pLFO3->ExtController = 0; // no external controller
325                      lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;                  bLFO3Enabled         = (lfo3_internal_depth > 0);
326                      pLFO3->ExtController = 0; // no external controller                  break;
327                      bLFO3Enabled         = (lfo3_internal_depth > 0);              case ::gig::lfo3_ctrl_modwheel:
328                      break;                  lfo3_internal_depth  = 0;
329                  case ::gig::lfo3_ctrl_modwheel:                  pLFO3->ExtController = 1; // MIDI controller 1
330                      lfo3_internal_depth  = 0;                  bLFO3Enabled         = (pRegion->LFO3ControlDepth > 0);
331                      pLFO3->ExtController = 1; // MIDI controller 1                  break;
332                      bLFO3Enabled         = (pDimRgn->LFO3ControlDepth > 0);              case ::gig::lfo3_ctrl_aftertouch:
333                      break;                  lfo3_internal_depth  = 0;
334                  case ::gig::lfo3_ctrl_aftertouch:                  pLFO3->ExtController = 128;
335                      lfo3_internal_depth  = 0;                  bLFO3Enabled         = true;
336                      pLFO3->ExtController = 0; // TODO: aftertouch not implemented yet                  break;
337                      bLFO3Enabled         = false; // see TODO comment in line above              case ::gig::lfo3_ctrl_internal_modwheel:
338                      break;                  lfo3_internal_depth  = pRegion->LFO3InternalDepth;
339                  case ::gig::lfo3_ctrl_internal_modwheel:                  pLFO3->ExtController = 1; // MIDI controller 1
340                      lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;                  bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
341                      pLFO3->ExtController = 1; // MIDI controller 1                  break;
342                      bLFO3Enabled         = (lfo3_internal_depth > 0 || pDimRgn->LFO3ControlDepth > 0);              case ::gig::lfo3_ctrl_internal_aftertouch:
343                      break;                  lfo3_internal_depth  = pRegion->LFO3InternalDepth;
344                  case ::gig::lfo3_ctrl_internal_aftertouch:                  pLFO1->ExtController = 128;
345                      lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;                  bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
346                      pLFO1->ExtController = 0; // TODO: aftertouch not implemented yet                  break;
347                      bLFO3Enabled         = (lfo3_internal_depth > 0 /*|| pDimRgn->LFO3ControlDepth > 0*/); // see TODO comment in line above              default:
348                      break;                  lfo3_internal_depth  = 0;
349                  default:                  pLFO3->ExtController = 0; // no external controller
350                      lfo3_internal_depth  = 0;                  bLFO3Enabled         = false;
351                      pLFO3->ExtController = 0; // no external controller          }
352                      bLFO3Enabled         = false;          if (bLFO3Enabled) {
353              }              pLFO3->trigger(pRegion->LFO3Frequency,
354              if (bLFO3Enabled) pLFO3->trigger(pDimRgn->LFO3Frequency,                             start_level_mid,
355                                               start_level_mid,                             lfo3_internal_depth,
356                                               lfo3_internal_depth,                             pRegion->LFO3ControlDepth,
357                                               pDimRgn->LFO3ControlDepth,                             false,
358                                               false,                             pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
359                                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);              pLFO3->update(pLFO3->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO3->ExtController] : 0);
360          }          }
361        }
362    
363        float Voice::CalculateCutoffBase(uint8_t MIDIKeyVelocity) {
364          #if CONFIG_FORCE_FILTER          float cutoff = pRegion->GetVelocityCutoff(MIDIKeyVelocity);
365          const bool bUseFilter = true;          if (pRegion->VCFKeyboardTracking) {
366          #else // use filter only if instrument file told so              cutoff *= exp((MIDIKeyVelocity - pRegion->VCFKeyboardTrackingBreakpoint) * 0.057762265f); // (ln(2) / 12)
367          const bool bUseFilter = pDimRgn->VCFEnabled;          }
368          #endif // CONFIG_FORCE_FILTER          return cutoff;
369          SYNTHESIS_MODE_SET_FILTER(SynthesisMode, bUseFilter);      }
370          if (bUseFilter) {  
371              #ifdef CONFIG_OVERRIDE_CUTOFF_CTRL      float Voice::CalculateFinalCutoff(float cutoffBase) {
372              VCFCutoffCtrl.controller = CONFIG_OVERRIDE_CUTOFF_CTRL;          int cvalue;
373              #else // use the one defined in the instrument file          if (VCFCutoffCtrl.controller) {
374              switch (pDimRgn->VCFCutoffController) {              cvalue = GetGigEngineChannel()->ControllerTable[VCFCutoffCtrl.controller];
375                  case ::gig::vcf_cutoff_ctrl_modwheel:              if (pRegion->VCFCutoffControllerInvert) cvalue = 127 - cvalue;
376                      VCFCutoffCtrl.controller = 1;              // VCFVelocityScale in this case means Minimum cutoff
377                      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 // CONFIG_OVERRIDE_CUTOFF_CTRL  
   
             #ifdef CONFIG_OVERRIDE_RESONANCE_CTRL  
             VCFResonanceCtrl.controller = CONFIG_OVERRIDE_RESONANCE_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 // CONFIG_OVERRIDE_RESONANCE_CTRL  
   
             #ifndef CONFIG_OVERRIDE_FILTER_TYPE  
             finalSynthesisParameters.filterLeft.SetType(pDimRgn->VCFType);  
             finalSynthesisParameters.filterRight.SetType(pDimRgn->VCFType);  
             #else // override filter type  
             FilterLeft.SetType(CONFIG_OVERRIDE_FILTER_TYPE);  
             FilterRight.SetType(CONFIG_OVERRIDE_FILTER_TYPE);  
             #endif // CONFIG_OVERRIDE_FILTER_TYPE  
   
             VCFCutoffCtrl.value    = pEngineChannel->ControllerTable[VCFCutoffCtrl.controller];  
             VCFResonanceCtrl.value = pEngineChannel->ControllerTable[VCFResonanceCtrl.controller];  
   
             // calculate cutoff frequency  
             float cutoff = pDimRgn->GetVelocityCutoff(itNoteOnEvent->Param.Note.Velocity);  
             if (pDimRgn->VCFKeyboardTracking) {  
                 cutoff *= exp((itNoteOnEvent->Param.Note.Key - pDimRgn->VCFKeyboardTrackingBreakpoint) * 0.057762265f); // (ln(2) / 12)  
             }  
             CutoffBase = cutoff;  
   
             int cvalue;  
             if (VCFCutoffCtrl.controller) {  
                 cvalue = pEngineChannel->ControllerTable[VCFCutoffCtrl.controller];  
                 if (pDimRgn->VCFCutoffControllerInvert) cvalue = 127 - cvalue;  
                 if (cvalue < pDimRgn->VCFVelocityScale) cvalue = pDimRgn->VCFVelocityScale;  
             }  
             else {  
                 cvalue = pDimRgn->VCFCutoff;  
             }  
             cutoff *= float(cvalue) * 0.00787402f; // (1 / 127)  
             if (cutoff > 1.0) cutoff = 1.0;  
             cutoff = exp(cutoff * FILTER_CUTOFF_COEFF) * CONFIG_FILTER_CUTOFF_MIN;  
   
             // 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 - CONFIG_FILTER_CUTOFF_MIN;  
             VCFResonanceCtrl.fvalue = resonance;  
378          }          }
379          else {          else {
380              VCFCutoffCtrl.controller    = 0;              cvalue = pRegion->VCFCutoff;
             VCFResonanceCtrl.controller = 0;  
381          }          }
382            float fco = cutoffBase * float(cvalue);
383            if (fco > 127.0f) fco = 127.0f;
384    
385          return 0; // success          return fco;
386      }      }
387    
388      /**      uint8_t Voice::GetVCFCutoffCtrl() {
389       *  Renders the audio data for this voice for the current audio fragment.          uint8_t ctrl;
390       *  The sample input data can either come from RAM (cached sample or sample          switch (pRegion->VCFCutoffController) {
391       *  part) or directly from disk. The output signal will be rendered by              case ::gig::vcf_cutoff_ctrl_modwheel:
392       *  resampling / interpolation. If this voice is a disk streaming voice and                  ctrl = 1;
393       *  the voice completely played back the cached RAM part of the sample, it                  break;
394       *  will automatically switch to disk playback for the next RenderAudio()              case ::gig::vcf_cutoff_ctrl_effect1:
395       *  call.                  ctrl = 12;
396       *                  break;
397       *  @param Samples - number of samples to be rendered in this audio fragment cycle              case ::gig::vcf_cutoff_ctrl_effect2:
398       */                  ctrl = 13;
399      void Voice::Render(uint Samples) {                  break;
400                case ::gig::vcf_cutoff_ctrl_breath:
401          // select default values for synthesis mode bits                  ctrl = 2;
402          SYNTHESIS_MODE_SET_LOOP(SynthesisMode, false);                  break;
403                case ::gig::vcf_cutoff_ctrl_foot:
404          switch (this->PlaybackState) {                  ctrl = 4;
405                    break;
406              case playback_state_init:              case ::gig::vcf_cutoff_ctrl_sustainpedal:
407                  this->PlaybackState = playback_state_ram; // we always start playback from RAM cache and switch then to disk if needed                  ctrl = 64;
408                  // no break - continue with playback_state_ram                  break;
409                case ::gig::vcf_cutoff_ctrl_softpedal:
410              case playback_state_ram: {                  ctrl = 67;
411                      if (RAMLoop) SYNTHESIS_MODE_SET_LOOP(SynthesisMode, true); // enable looping                  break;
412                case ::gig::vcf_cutoff_ctrl_genpurpose7:
413                      // render current fragment                  ctrl = 82;
414                      Synthesize(Samples, (sample_t*) pSample->GetCache().pStart, Delay);                  break;
415                case ::gig::vcf_cutoff_ctrl_genpurpose8:
416                      if (DiskVoice) {                  ctrl = 83;
417                          // check if we reached the allowed limit of the sample RAM cache                  break;
418                          if (finalSynthesisParameters.dPos > MaxRAMPos) {              case ::gig::vcf_cutoff_ctrl_aftertouch:
419                              dmsg(5,("Voice: switching to disk playback (Pos=%f)\n", finalSynthesisParameters.dPos));                  ctrl = 128;
420                              this->PlaybackState = playback_state_disk;                  break;
421                          }              case ::gig::vcf_cutoff_ctrl_none:
422                      } else if (finalSynthesisParameters.dPos >= pSample->GetCache().Size / pSample->FrameSize) {              default:
423                          this->PlaybackState = playback_state_end;                  ctrl = 0;
424                      }                  break;
                 }  
                 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(finalSynthesisParameters.dPos) - MaxRAMPos));  
                         finalSynthesisParameters.dPos -= int(finalSynthesisParameters.dPos);  
                         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 << CONFIG_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) finalSynthesisParameters.dPos;  
                     const int readSampleWords = iPos * pSample->Channels; // amount of sample words actually been read  
                     DiskStreamRef.pStream->IncrementReadPos(readSampleWords);  
                     finalSynthesisParameters.dPos -= iPos; // just keep fractional part of playback position  
   
                     // 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;  
                     }  
                 }  
                 break;  
   
             case playback_state_end:  
                 std::cerr << "gig::Voice::Render(): entered with playback_state_end, this is a bug!\n" << std::flush;  
                 break;  
         }  
   
         // Reset delay  
         Delay = 0;  
   
         itTriggerEvent = Pool<Event>::Iterator();  
   
         // If sample stream or release stage finished, kill the voice  
         if (PlaybackState == playback_state_end || EG1.getSegmentType() == EGADSR::segment_end) KillImmediately();  
     }  
   
     /**  
      *  Resets voice variables. Should only be called if rendering process is  
      *  suspended / not running.  
      */  
     void Voice::Reset() {  
         finalSynthesisParameters.filterLeft.Reset();  
         finalSynthesisParameters.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 given list of MIDI note on, note off and sustain pedal events  
      * for the given time.  
      *  
      * @param itEvent - iterator pointing to the next event to be processed  
      * @param End     - youngest time stamp where processing should be stopped  
      */  
     void Voice::processTransitionEvents(RTList<Event>::Iterator& itEvent, uint End) {  
         for (; itEvent && itEvent->FragmentPos() <= End; ++itEvent) {  
             if (itEvent->Type == Event::type_release) {  
                 EG1.update(EGADSR::event_release, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
                 EG2.update(EGADSR::event_release, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
             } else if (itEvent->Type == Event::type_cancel_release) {  
                 EG1.update(EGADSR::event_cancel_release, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
                 EG2.update(EGADSR::event_cancel_release, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
             }  
425          }          }
426    
427            return ctrl;
428      }      }
429    
430      /**      uint8_t Voice::GetVCFResonanceCtrl() {
431       * Process given list of MIDI control change and pitch bend events for          uint8_t ctrl;
432       * the given time.          switch (pRegion->VCFResonanceController) {
433       *              case ::gig::vcf_res_ctrl_genpurpose3:
434       * @param itEvent - iterator pointing to the next event to be processed                  ctrl = 18;
435       * @param End     - youngest time stamp where processing should be stopped                  break;
436       */              case ::gig::vcf_res_ctrl_genpurpose4:
437      void Voice::processCCEvents(RTList<Event>::Iterator& itEvent, uint End) {                  ctrl = 19;
438          for (; itEvent && itEvent->FragmentPos() <= End; ++itEvent) {                  break;
439              if (itEvent->Type == Event::type_control_change &&              case ::gig::vcf_res_ctrl_genpurpose5:
440                  itEvent->Param.CC.Controller) { // if (valid) MIDI control change event                  ctrl = 80;
441                  if (itEvent->Param.CC.Controller == VCFCutoffCtrl.controller) {                  break;
442                      processCutoffEvent(itEvent);              case ::gig::vcf_res_ctrl_genpurpose6:
443                  }                  ctrl = 81;
444                  if (itEvent->Param.CC.Controller == VCFResonanceCtrl.controller) {                  break;
445                      processResonanceEvent(itEvent);              case ::gig::vcf_res_ctrl_none:
446                  }              default:
447                  if (itEvent->Param.CC.Controller == pLFO1->ExtController) {                  ctrl = 0;
                     pLFO1->update(itEvent->Param.CC.Value);  
                 }  
                 if (itEvent->Param.CC.Controller == pLFO2->ExtController) {  
                     pLFO2->update(itEvent->Param.CC.Value);  
                 }  
                 if (itEvent->Param.CC.Controller == pLFO3->ExtController) {  
                     pLFO3->update(itEvent->Param.CC.Value);  
                 }  
                 if (pDimRgn->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&  
                     itEvent->Param.CC.Controller == pDimRgn->AttenuationController.controller_number) {  
                     processCrossFadeEvent(itEvent);  
                 }  
             } else if (itEvent->Type == Event::type_pitchbend) { // if pitch bend event  
                 processPitchEvent(itEvent);  
             }  
448          }          }
     }  
449    
450      void Voice::processPitchEvent(RTList<Event>::Iterator& itEvent) {          return ctrl;
         const float pitch = RTMath::CentsToFreqRatio(((double) itEvent->Param.Pitch.Pitch / 8192.0) * 200.0); // +-two semitones = +-200 cents  
         finalSynthesisParameters.fFinalPitch *= pitch;  
         PitchBend = pitch;  
     }  
   
     void Voice::processCrossFadeEvent(RTList<Event>::Iterator& itEvent) {  
         CrossfadeVolume = CrossfadeAttenuation(itEvent->Param.CC.Value);  
         #if CONFIG_PROCESS_MUTED_CHANNELS  
         const float effectiveVolume = CrossfadeVolume * Volume * (pEngineChannel->GetMute() ? 0 : pEngineChannel->GlobalVolume);  
         #else  
         const float effectiveVolume = CrossfadeVolume * Volume * pEngineChannel->GlobalVolume;  
         #endif  
         fFinalVolume = effectiveVolume;  
451      }      }
452    
453      void Voice::processCutoffEvent(RTList<Event>::Iterator& itEvent) {      void Voice::TriggerEG1(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
454          int ccvalue = itEvent->Param.CC.Value;          EG1.trigger(uint(RgnInfo.EG1PreAttack),
455          if (VCFCutoffCtrl.value == ccvalue) return;                      RgnInfo.EG1Attack * egInfo.Attack,
456          VCFCutoffCtrl.value == ccvalue;                      RgnInfo.EG1Hold,
457          if (pDimRgn->VCFCutoffControllerInvert)  ccvalue = 127 - ccvalue;                      RgnInfo.EG1Decay1 * egInfo.Decay * velrelease,
458          if (ccvalue < pDimRgn->VCFVelocityScale) ccvalue = pDimRgn->VCFVelocityScale;                      RgnInfo.EG1Decay2 * egInfo.Decay * velrelease,
459          float cutoff = CutoffBase * float(ccvalue) * 0.00787402f; // (1 / 127)                      RgnInfo.EG1InfiniteSustain,
460          if (cutoff > 1.0) cutoff = 1.0;                      uint(RgnInfo.EG1Sustain),
461          cutoff = exp(cutoff * FILTER_CUTOFF_COEFF) * CONFIG_FILTER_CUTOFF_MIN - CONFIG_FILTER_CUTOFF_MIN;                      RgnInfo.EG1Release * egInfo.Release * velrelease,
462          VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of fFinalCutoff next time                      velocityAttenuation,
463          fFinalCutoff = cutoff;                      sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
464      }      }
465    
466      void Voice::processResonanceEvent(RTList<Event>::Iterator& itEvent) {      void Voice::ProcessGroupEvent(RTList<Event>::Iterator& itEvent) {
467          // convert absolute controller value to differential          dmsg(4,("Voice %x processGroupEvents event type=%d", this, itEvent->Type));
         const int ctrldelta = itEvent->Param.CC.Value - VCFResonanceCtrl.value;  
         VCFResonanceCtrl.value = itEvent->Param.CC.Value;  
         const float resonancedelta = (float) ctrldelta * 0.00787f; // 0.0..1.0  
         fFinalResonance += resonancedelta;  
         // needed for initialization of parameter  
         VCFResonanceCtrl.fvalue = itEvent->Param.CC.Value * 0.00787f;  
     }  
   
     /**  
      *  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) {  
         finalSynthesisParameters.pOutLeft  = &pEngineChannel->pOutputLeft[Skip];  
         finalSynthesisParameters.pOutRight = &pEngineChannel->pOutputRight[Skip];  
         finalSynthesisParameters.pSrc      = pSrc;  
   
         RTList<Event>::Iterator itCCEvent = pEngineChannel->pEvents->first();  
         RTList<Event>::Iterator itNoteEvent = pEngineChannel->pMIDIKeyInfo[MIDIKey].pEvents->first();  
   
         if (Skip) { // skip events that happened before this voice was triggered  
             while (itCCEvent && itCCEvent->FragmentPos() <= Skip) ++itCCEvent;  
             while (itNoteEvent && itNoteEvent->FragmentPos() <= Skip) ++itNoteEvent;  
         }  
   
         uint i = Skip;  
         while (i < Samples) {  
             int iSubFragmentEnd = RTMath::Min(i + CONFIG_DEFAULT_SUBFRAGMENT_SIZE, Samples);  
   
             // initialize all final synthesis parameters  
             finalSynthesisParameters.fFinalPitch = PitchBase * PitchBend;  
             #if CONFIG_PROCESS_MUTED_CHANNELS  
             fFinalVolume = this->Volume * this->CrossfadeVolume * (pEngineChannel->GetMute() ? 0 : pEngineChannel->GlobalVolume);  
             #else  
             fFinalVolume = this->Volume * this->CrossfadeVolume * pEngineChannel->GlobalVolume;  
             #endif  
             fFinalCutoff    = VCFCutoffCtrl.fvalue;  
             fFinalResonance = VCFResonanceCtrl.fvalue;  
   
             // process MIDI control change and pitchbend events for this subfragment  
             processCCEvents(itCCEvent, iSubFragmentEnd);  
   
             // process transition events (note on, note off & sustain pedal)  
             processTransitionEvents(itNoteEvent, iSubFragmentEnd);  
   
             // process envelope generators  
             switch (EG1.getSegmentType()) {  
                 case EGADSR::segment_lin:  
                     fFinalVolume *= EG1.processLin();  
                     break;  
                 case EGADSR::segment_exp:  
                     fFinalVolume *= EG1.processExp();  
                     break;  
                 case EGADSR::segment_end:  
                     fFinalVolume *= EG1.getLevel();  
                     break; // noop  
             }  
             switch (EG2.getSegmentType()) {  
                 case EGADSR::segment_lin:  
                     fFinalCutoff *= EG2.processLin();  
                     break;  
                 case EGADSR::segment_exp:  
                     fFinalCutoff *= EG2.processExp();  
                     break;  
                 case EGADSR::segment_end:  
                     fFinalCutoff *= EG2.getLevel();  
                     break; // noop  
             }  
             if (EG3.active()) finalSynthesisParameters.fFinalPitch *= RTMath::CentsToFreqRatio(EG3.render());  
   
             // process low frequency oscillators  
             if (bLFO1Enabled) fFinalVolume *= pLFO1->render();  
             if (bLFO2Enabled) fFinalCutoff *= pLFO2->render();  
             if (bLFO3Enabled) finalSynthesisParameters.fFinalPitch *= RTMath::CentsToFreqRatio(pLFO3->render());  
   
             // if filter enabled then update filter coefficients  
             if (SYNTHESIS_MODE_GET_FILTER(SynthesisMode)) {  
                 finalSynthesisParameters.filterLeft.SetParameters(fFinalCutoff, fFinalResonance, pEngine->SampleRate);  
                 finalSynthesisParameters.filterRight.SetParameters(fFinalCutoff, fFinalResonance, pEngine->SampleRate);  
             }  
   
             // do we need resampling?  
             const float __PLUS_ONE_CENT  = 1.000577789506554859250142541782224725466f;  
             const float __MINUS_ONE_CENT = 0.9994225441413807496009516495583113737666f;  
             const bool bResamplingRequired = !(finalSynthesisParameters.fFinalPitch <= __PLUS_ONE_CENT &&  
                                                finalSynthesisParameters.fFinalPitch >= __MINUS_ONE_CENT);  
             SYNTHESIS_MODE_SET_INTERPOLATE(SynthesisMode, bResamplingRequired);  
   
             // prepare final synthesis parameters structure  
             finalSynthesisParameters.fFinalVolumeLeft  = fFinalVolume * PanLeft;  
             finalSynthesisParameters.fFinalVolumeRight = fFinalVolume * PanRight;  
             finalSynthesisParameters.uiToGo            = iSubFragmentEnd - i;  
   
             // render audio for one subfragment  
             RunSynthesisFunction(SynthesisMode, &finalSynthesisParameters, &loop);  
   
             const double newPos = Pos + (iSubFragmentEnd - i) * finalSynthesisParameters.fFinalPitch;  
   
             // increment envelopes' positions  
             if (EG1.active()) {  
   
                 // if sample has a loop and loop start has been reached in this subfragment, send a special event to EG1 to let it finish the attack hold stage  
                 if (pSample->Loops && Pos <= pSample->LoopStart && pSample->LoopStart < newPos) {  
                     EG1.update(EGADSR::event_hold_end, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
                 }  
468    
469                  EG1.increment(1);          // TODO: The SustainPedal condition could be wrong, maybe the
470                  if (!EG1.toStageEndLeft()) EG1.update(EGADSR::event_stage_end, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);          // check should be if this Voice is in release stage or is a
471              }          // release sample instead. Need to test this in GSt.
472              if (EG2.active()) {          if (itEvent->Param.Note.Key != MIDIKey ||
473                  EG2.increment(1);              !GetGigEngineChannel()->SustainPedal) {
474                  if (!EG2.toStageEndLeft()) EG2.update(EGADSR::event_stage_end, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);              dmsg(4,("Voice %x - kill", this));
             }  
             EG3.increment(1);  
             if (!EG3.toEndLeft()) EG3.update(); // neutralize envelope coefficient if end reached  
475    
476              Pos = newPos;              // kill the voice fast
477              i = iSubFragmentEnd;              pEG1->enterFadeOutStage();
478          }          }
479      }      }
480    
     /**  
      *  Immediately kill the voice. This method should not be used to kill  
      *  a normal, active voice, because it doesn't take care of things like  
      *  fading down the volume level to avoid clicks and regular processing  
      *  until the kill event actually occured!  
      *  
      *  @see Kill()  
      */  
     void Voice::KillImmediately() {  
         if (DiskVoice && DiskStreamRef.State != Stream::state_unused) {  
             pDiskThread->OrderDeletionOfStream(&DiskStreamRef);  
         }  
         Reset();  
     }  
   
     /**  
      *  Kill the voice in regular sense. Let the voice render audio until  
      *  the kill event actually occured and then fade down the volume level  
      *  very quickly and let the voice die finally. Unlike a normal release  
      *  of a voice, a kill process cannot be cancalled and is therefore  
      *  usually used for voice stealing and key group conflicts.  
      *  
      *  @param itKillEvent - event which caused the voice to be killed  
      */  
     void Voice::Kill(Pool<Event>::Iterator& itKillEvent) {  
         #if CONFIG_DEVMODE  
         if (!itKillEvent) dmsg(1,("gig::Voice::Kill(): ERROR, !itKillEvent !!!\n"));  
         if (itKillEvent && !itKillEvent.isValid()) dmsg(1,("gig::Voice::Kill(): ERROR, itKillEvent invalid !!!\n"));  
         #endif // CONFIG_DEVMODE  
   
         if (itTriggerEvent && itKillEvent->FragmentPos() <= itTriggerEvent->FragmentPos()) return;  
         this->itKillEvent = itKillEvent;  
     }  
   
481  }} // namespace LinuxSampler::gig  }} // namespace LinuxSampler::gig
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