/[svn]/linuxsampler/trunk/src/engines/gig/Voice.cpp
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revision 841 by persson, Sat Mar 4 16:23:53 2006 UTC revision 3118 by schoenebeck, Fri Apr 21 13:33:03 2017 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, 2006 Christian Schoenebeck                        *   *   Copyright (C) 2005 - 2008 Christian Schoenebeck                       *
7     *   Copyright (C) 2009 Christian Schoenebeck and Grigor Iliev             *
8     *   Copyright (C) 2010 - 2016 Christian Schoenebeck and Andreas Persson   *
9   *                                                                         *   *                                                                         *
10   *   This program is free software; you can redistribute it and/or modify  *   *   This program is free software; you can redistribute it and/or modify  *
11   *   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 26 
26  #include "../../common/Features.h"  #include "../../common/Features.h"
27  #include "Synthesizer.h"  #include "Synthesizer.h"
28  #include "Profiler.h"  #include "Profiler.h"
29    #include "Engine.h"
30    #include "EngineChannel.h"
31    
32  #include "Voice.h"  #include "Voice.h"
33    
34  namespace LinuxSampler { namespace gig {  namespace LinuxSampler { namespace gig {
35    
36      const float Voice::FILTER_CUTOFF_COEFF(CalculateFilterCutoffCoeff());      Voice::Voice() {
37            pEngine = NULL;
38            pEG1 = &EG1;
39            pEG2 = &EG2;
40        }
41    
42      float Voice::CalculateFilterCutoffCoeff() {      Voice::~Voice() {
         return log(CONFIG_FILTER_CUTOFF_MAX / CONFIG_FILTER_CUTOFF_MIN);  
43      }      }
44    
45      Voice::Voice() {      EngineChannel* Voice::GetGigEngineChannel() {
46          pEngine     = NULL;          return static_cast<EngineChannel*>(pEngineChannel);
47          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());  
48    
49          finalSynthesisParameters.filterLeft.Reset();      void Voice::SetEngine(LinuxSampler::Engine* pEngine) {
50          finalSynthesisParameters.filterRight.Reset();          Engine* engine = static_cast<Engine*>(pEngine);
51            this->pEngine     = engine;
52            this->pDiskThread = engine->pDiskThread;
53            dmsg(6,("Voice::SetEngine()\n"));
54      }      }
55    
56      Voice::~Voice() {      Voice::SampleInfo Voice::GetSampleInfo() {
57          if (pLFO1) delete pLFO1;          SampleInfo si;
58          if (pLFO2) delete pLFO2;          si.SampleRate       = pSample->SamplesPerSecond;
59          if (pLFO3) delete pLFO3;          si.ChannelCount     = pSample->Channels;
60            si.FrameSize        = pSample->FrameSize;
61            si.BitDepth         = pSample->BitDepth;
62            si.TotalFrameCount  = (uint)pSample->SamplesTotal;
63    
64            si.HasLoops       = pRegion->SampleLoops;
65            si.LoopStart      = (si.HasLoops) ? pRegion->pSampleLoops[0].LoopStart  : 0;
66            si.LoopLength     = (si.HasLoops) ? pRegion->pSampleLoops[0].LoopLength : 0;
67            si.LoopPlayCount  = pSample->LoopPlayCount;
68            si.Unpitched      = !pRegion->PitchTrack;
69    
70            return si;
71      }      }
72    
73      void Voice::SetEngine(Engine* pEngine) {      Voice::RegionInfo Voice::GetRegionInfo() {
74          this->pEngine     = pEngine;          RegionInfo ri;
75          this->pDiskThread = pEngine->pDiskThread;          ri.UnityNote = pRegion->UnityNote;
76          dmsg(6,("Voice::SetEngine()\n"));          ri.FineTune  = pRegion->FineTune;
77            ri.Pan       = pRegion->Pan;
78            ri.SampleStartOffset = pRegion->SampleStartOffset;
79    
80            ri.EG2PreAttack        = pRegion->EG2PreAttack;
81            ri.EG2Attack           = pRegion->EG2Attack;
82            ri.EG2Decay1           = pRegion->EG2Decay1;
83            ri.EG2Decay2           = pRegion->EG2Decay2;
84            ri.EG2Sustain          = pRegion->EG2Sustain;
85            ri.EG2InfiniteSustain  = pRegion->EG2InfiniteSustain;
86            ri.EG2Release          = pRegion->EG2Release;
87    
88            ri.EG3Attack     = pRegion->EG3Attack;
89            ri.EG3Depth      = pRegion->EG3Depth;
90            ri.VCFEnabled    = pRegion->VCFEnabled;
91            ri.VCFType       = Filter::vcf_type_t(pRegion->VCFType);
92            ri.VCFResonance  = pRegion->VCFResonance;
93    
94            ri.ReleaseTriggerDecay = 0.01053 * (256 >> pRegion->ReleaseTriggerDecay);
95    
96            return ri;
97        }
98    
99        Voice::InstrumentInfo Voice::GetInstrumentInfo() {
100            InstrumentInfo ii;
101            ii.FineTune = GetGigEngineChannel()->pInstrument->FineTune;
102            ii.PitchbendRange = GetGigEngineChannel()->pInstrument->PitchbendRange;
103    
104            return ii;
105      }      }
106    
107      /**      double Voice::GetSampleAttenuation() {
108       *  Initializes and triggers the voice, a disk stream will be launched if          return pRegion->SampleAttenuation;
109       *  needed.      }
110       *  
111       *  @param pEngineChannel - engine channel on which this voice was ordered      double Voice::GetVelocityAttenuation(uint8_t MIDIKeyVelocity) {
112       *  @param itNoteOnEvent  - event that caused triggering of this voice          return pRegion->GetVelocityAttenuation(MIDIKeyVelocity);
113       *  @param PitchBend      - MIDI detune factor (-8192 ... +8191)      }
114       *  @param pDimRgn        - points to the dimension region which provides sample wave(s) and articulation data  
115       *  @param VoiceType      - type of this voice      double Voice::GetVelocityRelease(uint8_t MIDIKeyVelocity) {
116       *  @param iKeyGroup      - a value > 0 defines a key group in which this voice is member of          return pRegion->GetVelocityRelease(MIDIKeyVelocity);
117       *  @returns 0 on success, a value < 0 if the voice wasn't triggered      }
118       *           (either due to an error or e.g. because no region is  
119       *           defined for the given key)      void Voice::ProcessCCEvent(RTList<Event>::Iterator& itEvent) {
120       */          if (itEvent->Type == Event::type_control_change && itEvent->Param.CC.Controller) { // if (valid) MIDI control change event
121      int Voice::Trigger(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent, int PitchBend, ::gig::DimensionRegion* pDimRgn, type_t VoiceType, int iKeyGroup) {              if (pRegion->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&
122          this->pEngineChannel = pEngineChannel;                  itEvent->Param.CC.Controller == pRegion->AttenuationController.controller_number) {
123          this->pDimRgn        = pDimRgn;                  CrossfadeSmoother.update(AbstractEngine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.CC.Value)]);
124                }
125          #if CONFIG_DEVMODE          }
126          if (itNoteOnEvent->FragmentPos() > pEngine->MaxSamplesPerCycle) { // just a sanity check for debugging      }
127              dmsg(1,("Voice::Trigger(): ERROR, TriggerDelay > Totalsamples\n"));  
128          }      void Voice::ProcessChannelPressureEvent(RTList<Event>::Iterator& itEvent) {
129          #endif // CONFIG_DEVMODE          if (itEvent->Type == Event::type_channel_pressure) { // if (valid) MIDI channel pressure (aftertouch) event
130                if (pRegion->AttenuationController.type == ::gig::attenuation_ctrl_t::type_channelaftertouch) {
131          Type            = VoiceType;                  CrossfadeSmoother.update(AbstractEngine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.ChannelPressure.Value)]);
132          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);  
   
         float 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;  
133          }          }
134        }
135    
136          // select channel mode (mono or stereo)      void Voice::ProcessPolyphonicKeyPressureEvent(RTList<Event>::Iterator& itEvent) {
137          SYNTHESIS_MODE_SET_CHANNELS(SynthesisMode, pSample->Channels == 2);          // Not used so far
138        }
139    
140        void Voice::ProcessCutoffEvent(RTList<Event>::Iterator& itEvent) {
141            int ccvalue = itEvent->Param.CC.Value;
142            if (VCFCutoffCtrl.value == ccvalue) return;
143            VCFCutoffCtrl.value = ccvalue;
144            if (pRegion->VCFCutoffControllerInvert)  ccvalue = 127 - ccvalue;
145            if (ccvalue < pRegion->VCFVelocityScale) ccvalue = pRegion->VCFVelocityScale;
146            float cutoff = CutoffBase * float(ccvalue);
147            if (cutoff > 127.0f) cutoff = 127.0f;
148    
149          // get starting crossfade volume level          VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of fFinalCutoff next time
150            fFinalCutoff = cutoff;
151        }
152    
153        double Voice::CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity) {
154          float crossfadeVolume;          float crossfadeVolume;
155          switch (pDimRgn->AttenuationController.type) {          switch (pRegion->AttenuationController.type) {
156              case ::gig::attenuation_ctrl_t::type_channelaftertouch:              case ::gig::attenuation_ctrl_t::type_channelaftertouch:
157                  crossfadeVolume = 1.0f; //TODO: aftertouch not supported yet                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[128])];
158                  break;                  break;
159              case ::gig::attenuation_ctrl_t::type_velocity:              case ::gig::attenuation_ctrl_t::type_velocity:
160                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(itNoteOnEvent->Param.Note.Velocity)];                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(MIDIKeyVelocity)];
161                  break;                  break;
162              case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate              case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate
163                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(pEngineChannel->ControllerTable[pDimRgn->AttenuationController.controller_number])];                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[pRegion->AttenuationController.controller_number])];
164                  break;                  break;
165              case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined              case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined
166              default:              default:
167                  crossfadeVolume = 1.0f;                  crossfadeVolume = 1.0f;
168          }          }
169    
170          VolumeLeft  = volume * Engine::PanCurve[64 - pDimRgn->Pan];          return crossfadeVolume;
171          VolumeRight = volume * Engine::PanCurve[64 + pDimRgn->Pan];      }
172    
173          float subfragmentRate = pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE;      double Voice::GetEG1ControllerValue(uint8_t MIDIKeyVelocity) {
174          CrossfadeSmoother.trigger(crossfadeVolume, subfragmentRate);          double eg1controllervalue = 0;
175          VolumeSmoother.trigger(pEngineChannel->GlobalVolume, subfragmentRate);          switch (pRegion->EG1Controller.type) {
176          PanLeftSmoother.trigger(pEngineChannel->GlobalPanLeft, subfragmentRate);              case ::gig::eg1_ctrl_t::type_none: // no controller defined
177          PanRightSmoother.trigger(pEngineChannel->GlobalPanRight, subfragmentRate);                  eg1controllervalue = 0;
178                    break;
179          finalSynthesisParameters.dPos = pDimRgn->SampleStartOffset; // offset where we should start playback of sample (0 - 2000 sample points)              case ::gig::eg1_ctrl_t::type_channelaftertouch:
180          Pos = pDimRgn->SampleStartOffset;                  eg1controllervalue = GetGigEngineChannel()->ControllerTable[128];
181                    break;
182          // Check if the sample needs disk streaming or is too short for that              case ::gig::eg1_ctrl_t::type_velocity:
183          long cachedsamples = pSample->GetCache().Size / pSample->FrameSize;                  eg1controllervalue = MIDIKeyVelocity;
184          DiskVoice          = cachedsamples < pSample->SamplesTotal;                  break;
185                case ::gig::eg1_ctrl_t::type_controlchange: // MIDI control change controller
186          if (DiskVoice) { // voice to be streamed from disk                  eg1controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG1Controller.controller_number];
187              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)                  break;
   
             // check if there's a loop defined which completely fits into the cached (RAM) part of the sample  
             RAMLoop = (pSample->Loops && pSample->LoopEnd <= MaxRAMPos);  
   
             if (pDiskThread->OrderNewStream(&DiskStreamRef, pSample, MaxRAMPos, !RAMLoop) < 0) {  
                 dmsg(1,("Disk stream order failed!\n"));  
                 KillImmediately();  
                 return -1;  
             }  
             dmsg(4,("Disk voice launched (cached samples: %d, total Samples: %d, MaxRAMPos: %d, RAMLooping: %s)\n", cachedsamples, pSample->SamplesTotal, MaxRAMPos, (RAMLoop) ? "yes" : "no"));  
188          }          }
189          else { // RAM only voice          if (pRegion->EG1ControllerInvert) eg1controllervalue = 127 - eg1controllervalue;
             MaxRAMPos = cachedsamples;  
             RAMLoop = (pSample->Loops != 0);  
             dmsg(4,("RAM only voice launched (Looping: %s)\n", (RAMLoop) ? "yes" : "no"));  
         }  
         if (RAMLoop) {  
             loop.uiTotalCycles = pSample->LoopPlayCount;  
             loop.uiCyclesLeft  = pSample->LoopPlayCount;  
             loop.uiStart       = pSample->LoopStart;  
             loop.uiEnd         = pSample->LoopEnd;  
             loop.uiSize        = pSample->LoopSize;  
         }  
   
         // calculate initial pitch value  
         {  
             double pitchbasecents = pDimRgn->FineTune + (int) pEngine->ScaleTuning[MIDIKey % 12];  
             if (pDimRgn->PitchTrack) pitchbasecents += (MIDIKey - (int) pDimRgn->UnityNote) * 100;  
             this->PitchBase = RTMath::CentsToFreqRatio(pitchbasecents) * (double(pSample->SamplesPerSecond) / double(pEngine->SampleRate));  
             this->PitchBend = RTMath::CentsToFreqRatio(((double) PitchBend / 8192.0) * 200.0); // pitchbend wheel +-2 semitones = 200 cents  
         }  
   
         // 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;  
190    
191              // calculate influence of EG1 controller on EG1's parameters          return eg1controllervalue;
192              // (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);  
         }  
   
 #ifdef CONFIG_INTERPOLATE_VOLUME  
         // setup initial volume in synthesis parameters  
 #ifdef CONFIG_PROCESS_MUTED_CHANNELS  
         if (pEngineChannel->GetMute()) {  
             finalSynthesisParameters.fFinalVolumeLeft  = 0;  
             finalSynthesisParameters.fFinalVolumeRight = 0;  
         }  
         else  
 #else  
         {  
             float finalVolume = pEngineChannel->GlobalVolume * crossfadeVolume * EG1.getLevel();  
   
             finalSynthesisParameters.fFinalVolumeLeft  = finalVolume * VolumeLeft  * pEngineChannel->GlobalPanLeft;  
             finalSynthesisParameters.fFinalVolumeRight = finalVolume * VolumeRight * pEngineChannel->GlobalPanRight;  
         }  
 #endif  
 #endif  
   
         // setup EG 2 (VCF Cutoff EG)  
         {  
             // 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;  
193    
194              // calculate influence of EG2 controller on EG2's parameters      Voice::EGInfo Voice::CalculateEG1ControllerInfluence(double eg1ControllerValue) {
195              double eg2attack  = (pDimRgn->EG2ControllerAttackInfluence)  ? 1 + 0.00775 * (double) (1 << pDimRgn->EG2ControllerAttackInfluence)  * eg2controllervalue : 1.0;          EGInfo eg;
196              double eg2decay   = (pDimRgn->EG2ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pDimRgn->EG2ControllerDecayInfluence)   * eg2controllervalue : 1.0;          // (eg1attack is different from the others)
197              double eg2release = (pDimRgn->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pDimRgn->EG2ControllerReleaseInfluence) * eg2controllervalue : 1.0;          if (pRegion->EG1Attack < 1e-8 && // attack in gig == 0
198                (pRegion->EG1ControllerAttackInfluence == 0 ||
199              EG2.trigger(pDimRgn->EG2PreAttack,               eg1ControllerValue <= 10)) { // strange GSt special case
200                          pDimRgn->EG2Attack * eg2attack,              eg.Attack = 0; // this will force the attack to be 0 in the call to EG1.trigger
201                          false,          } else {
202                          pDimRgn->EG2Decay1 * eg2decay * velrelease,              eg.Attack  = (pRegion->EG1ControllerAttackInfluence)  ?
203                          pDimRgn->EG2Decay2 * eg2decay * velrelease,                  1 + 0.031 * (double) (pRegion->EG1ControllerAttackInfluence == 1 ?
204                          pDimRgn->EG2InfiniteSustain,                                        1 : 1 << pRegion->EG1ControllerAttackInfluence) * eg1ControllerValue : 1.0;
205                          pDimRgn->EG2Sustain,          }
206                          pDimRgn->EG2Release * eg2release * velrelease,          eg.Decay   = (pRegion->EG1ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerDecayInfluence)   * eg1ControllerValue : 1.0;
207                          velocityAttenuation,          eg.Release = (pRegion->EG1ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerReleaseInfluence) * eg1ControllerValue : 1.0;
208                          pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
209          }          return eg;
210        }
211    
212          // setup EG 3 (VCO EG)      double Voice::GetEG2ControllerValue(uint8_t MIDIKeyVelocity) {
213          {          double eg2controllervalue = 0;
214              // if portamento mode is on, we dedicate EG3 purely for portamento, otherwise if portamento is off we do as told by the patch          switch (pRegion->EG2Controller.type) {
215              bool  bPortamento = pEngineChannel->PortamentoMode && pEngineChannel->PortamentoPos >= 0.0f;              case ::gig::eg2_ctrl_t::type_none: // no controller defined
216              float eg3depth = (bPortamento)                  eg2controllervalue = 0;
217                                   ? RTMath::CentsToFreqRatio((pEngineChannel->PortamentoPos - (float) MIDIKey) * 100)                  break;
218                                   : RTMath::CentsToFreqRatio(pDimRgn->EG3Depth);              case ::gig::eg2_ctrl_t::type_channelaftertouch:
219              float eg3time = (bPortamento)                  eg2controllervalue = GetGigEngineChannel()->ControllerTable[128];
220                                  ? pEngineChannel->PortamentoTime                  break;
221                                  : pDimRgn->EG3Attack;              case ::gig::eg2_ctrl_t::type_velocity:
222              EG3.trigger(eg3depth, eg3time, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);                  eg2controllervalue = MIDIKeyVelocity;
223              dmsg(5,("PortamentoPos=%f, depth=%f, time=%f\n", pEngineChannel->PortamentoPos, eg3depth, eg3time));                  break;
224          }              case ::gig::eg2_ctrl_t::type_controlchange: // MIDI control change controller
225                    eg2controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG2Controller.controller_number];
226                    break;
         // setup LFO 1 (VCA LFO)  
         {  
             uint16_t lfo1_internal_depth;  
             switch (pDimRgn->LFO1Controller) {  
                 case ::gig::lfo1_ctrl_internal:  
                     lfo1_internal_depth  = pDimRgn->LFO1InternalDepth;  
                     pLFO1->ExtController = 0; // no external controller  
                     bLFO1Enabled         = (lfo1_internal_depth > 0);  
                     break;  
                 case ::gig::lfo1_ctrl_modwheel:  
                     lfo1_internal_depth  = 0;  
                     pLFO1->ExtController = 1; // MIDI controller 1  
                     bLFO1Enabled         = (pDimRgn->LFO1ControlDepth > 0);  
                     break;  
                 case ::gig::lfo1_ctrl_breath:  
                     lfo1_internal_depth  = 0;  
                     pLFO1->ExtController = 2; // MIDI controller 2  
                     bLFO1Enabled         = (pDimRgn->LFO1ControlDepth > 0);  
                     break;  
                 case ::gig::lfo1_ctrl_internal_modwheel:  
                     lfo1_internal_depth  = pDimRgn->LFO1InternalDepth;  
                     pLFO1->ExtController = 1; // MIDI controller 1  
                     bLFO1Enabled         = (lfo1_internal_depth > 0 || pDimRgn->LFO1ControlDepth > 0);  
                     break;  
                 case ::gig::lfo1_ctrl_internal_breath:  
                     lfo1_internal_depth  = pDimRgn->LFO1InternalDepth;  
                     pLFO1->ExtController = 2; // MIDI controller 2  
                     bLFO1Enabled         = (lfo1_internal_depth > 0 || pDimRgn->LFO1ControlDepth > 0);  
                     break;  
                 default:  
                     lfo1_internal_depth  = 0;  
                     pLFO1->ExtController = 0; // no external controller  
                     bLFO1Enabled         = false;  
             }  
             if (bLFO1Enabled) {  
                 pLFO1->trigger(pDimRgn->LFO1Frequency,  
                                start_level_max,  
                                lfo1_internal_depth,  
                                pDimRgn->LFO1ControlDepth,  
                                pDimRgn->LFO1FlipPhase,  
                                pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
                 pLFO1->update(pLFO1->ExtController ? pEngineChannel->ControllerTable[pLFO1->ExtController] : 0);  
             }  
227          }          }
228            if (pRegion->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue;
229    
230            return eg2controllervalue;
231        }
232    
233          // setup LFO 2 (VCF Cutoff LFO)      Voice::EGInfo Voice::CalculateEG2ControllerInfluence(double eg2ControllerValue) {
234          {          EGInfo eg;
235              uint16_t lfo2_internal_depth;          eg.Attack  = (pRegion->EG2ControllerAttackInfluence)  ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerAttackInfluence)  * eg2ControllerValue : 1.0;
236              switch (pDimRgn->LFO2Controller) {          eg.Decay   = (pRegion->EG2ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerDecayInfluence)   * eg2ControllerValue : 1.0;
237                  case ::gig::lfo2_ctrl_internal:          eg.Release = (pRegion->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerReleaseInfluence) * eg2ControllerValue : 1.0;
                     lfo2_internal_depth  = pDimRgn->LFO2InternalDepth;  
                     pLFO2->ExtController = 0; // no external controller  
                     bLFO2Enabled         = (lfo2_internal_depth > 0);  
                     break;  
                 case ::gig::lfo2_ctrl_modwheel:  
                     lfo2_internal_depth  = 0;  
                     pLFO2->ExtController = 1; // MIDI controller 1  
                     bLFO2Enabled         = (pDimRgn->LFO2ControlDepth > 0);  
                     break;  
                 case ::gig::lfo2_ctrl_foot:  
                     lfo2_internal_depth  = 0;  
                     pLFO2->ExtController = 4; // MIDI controller 4  
                     bLFO2Enabled         = (pDimRgn->LFO2ControlDepth > 0);  
                     break;  
                 case ::gig::lfo2_ctrl_internal_modwheel:  
                     lfo2_internal_depth  = pDimRgn->LFO2InternalDepth;  
                     pLFO2->ExtController = 1; // MIDI controller 1  
                     bLFO2Enabled         = (lfo2_internal_depth > 0 || pDimRgn->LFO2ControlDepth > 0);  
                     break;  
                 case ::gig::lfo2_ctrl_internal_foot:  
                     lfo2_internal_depth  = pDimRgn->LFO2InternalDepth;  
                     pLFO2->ExtController = 4; // MIDI controller 4  
                     bLFO2Enabled         = (lfo2_internal_depth > 0 || pDimRgn->LFO2ControlDepth > 0);  
                     break;  
                 default:  
                     lfo2_internal_depth  = 0;  
                     pLFO2->ExtController = 0; // no external controller  
                     bLFO2Enabled         = false;  
             }  
             if (bLFO2Enabled) {  
                 pLFO2->trigger(pDimRgn->LFO2Frequency,  
                                start_level_max,  
                                lfo2_internal_depth,  
                                pDimRgn->LFO2ControlDepth,  
                                pDimRgn->LFO2FlipPhase,  
                                pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
                 pLFO2->update(pLFO2->ExtController ? pEngineChannel->ControllerTable[pLFO2->ExtController] : 0);  
             }  
         }  
238    
239            return eg;
240        }
241    
242          // setup LFO 3 (VCO LFO)      void Voice::InitLFO1() {
243          {          uint16_t lfo1_internal_depth;
244              uint16_t lfo3_internal_depth;          switch (pRegion->LFO1Controller) {
245              switch (pDimRgn->LFO3Controller) {              case ::gig::lfo1_ctrl_internal:
246                  case ::gig::lfo3_ctrl_internal:                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
247                      lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;                  pLFO1->ExtController = 0; // no external controller
248                      pLFO3->ExtController = 0; // no external controller                  bLFO1Enabled         = (lfo1_internal_depth > 0);
249                      bLFO3Enabled         = (lfo3_internal_depth > 0);                  break;
250                      break;              case ::gig::lfo1_ctrl_modwheel:
251                  case ::gig::lfo3_ctrl_modwheel:                  lfo1_internal_depth  = 0;
252                      lfo3_internal_depth  = 0;                  pLFO1->ExtController = 1; // MIDI controller 1
253                      pLFO3->ExtController = 1; // MIDI controller 1                  bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
254                      bLFO3Enabled         = (pDimRgn->LFO3ControlDepth > 0);                  break;
255                      break;              case ::gig::lfo1_ctrl_breath:
256                  case ::gig::lfo3_ctrl_aftertouch:                  lfo1_internal_depth  = 0;
257                      lfo3_internal_depth  = 0;                  pLFO1->ExtController = 2; // MIDI controller 2
258                      pLFO3->ExtController = 0; // TODO: aftertouch not implemented yet                  bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
259                      bLFO3Enabled         = false; // see TODO comment in line above                  break;
260                      break;              case ::gig::lfo1_ctrl_internal_modwheel:
261                  case ::gig::lfo3_ctrl_internal_modwheel:                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
262                      lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;                  pLFO1->ExtController = 1; // MIDI controller 1
263                      pLFO3->ExtController = 1; // MIDI controller 1                  bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
264                      bLFO3Enabled         = (lfo3_internal_depth > 0 || pDimRgn->LFO3ControlDepth > 0);                  break;
265                      break;              case ::gig::lfo1_ctrl_internal_breath:
266                  case ::gig::lfo3_ctrl_internal_aftertouch:                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
267                      lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;                  pLFO1->ExtController = 2; // MIDI controller 2
268                      pLFO1->ExtController = 0; // TODO: aftertouch not implemented yet                  bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
269                      bLFO3Enabled         = (lfo3_internal_depth > 0 /*|| pDimRgn->LFO3ControlDepth > 0*/); // see TODO comment in line above                  break;
270                      break;              default:
271                  default:                  lfo1_internal_depth  = 0;
272                      lfo3_internal_depth  = 0;                  pLFO1->ExtController = 0; // no external controller
273                      pLFO3->ExtController = 0; // no external controller                  bLFO1Enabled         = false;
274                      bLFO3Enabled         = false;          }
275              }          if (bLFO1Enabled) {
276              if (bLFO3Enabled) {              pLFO1->trigger(pRegion->LFO1Frequency,
277                  pLFO3->trigger(pDimRgn->LFO3Frequency,                             start_level_min,
278                                 start_level_mid,                             lfo1_internal_depth,
279                                 lfo3_internal_depth,                             pRegion->LFO1ControlDepth,
280                                 pDimRgn->LFO3ControlDepth,                             pRegion->LFO1FlipPhase,
281                                 false,                             pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
282                                 pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);              pLFO1->updateByMIDICtrlValue(pLFO1->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO1->ExtController] : 0);
283                  pLFO3->update(pLFO3->ExtController ? pEngineChannel->ControllerTable[pLFO3->ExtController] : 0);              pLFO1->setScriptDepthFactor(pNote->Override.AmpLFODepth);
284              }              pLFO1->setScriptFrequencyFactor(pNote->Override.AmpLFOFreq, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
285          }          }
286        }
287    
288        void Voice::InitLFO2() {
289          #if CONFIG_FORCE_FILTER          uint16_t lfo2_internal_depth;
290          const bool bUseFilter = true;          switch (pRegion->LFO2Controller) {
291          #else // use filter only if instrument file told so              case ::gig::lfo2_ctrl_internal:
292          const bool bUseFilter = pDimRgn->VCFEnabled;                  lfo2_internal_depth  = pRegion->LFO2InternalDepth;
293          #endif // CONFIG_FORCE_FILTER                  pLFO2->ExtController = 0; // no external controller
294          SYNTHESIS_MODE_SET_FILTER(SynthesisMode, bUseFilter);                  bLFO2Enabled         = (lfo2_internal_depth > 0);
295          if (bUseFilter) {                  break;
296              #ifdef CONFIG_OVERRIDE_CUTOFF_CTRL              case ::gig::lfo2_ctrl_modwheel:
297              VCFCutoffCtrl.controller = CONFIG_OVERRIDE_CUTOFF_CTRL;                  lfo2_internal_depth  = 0;
298              #else // use the one defined in the instrument file                  pLFO2->ExtController = 1; // MIDI controller 1
299              switch (pDimRgn->VCFCutoffController) {                  bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
300                  case ::gig::vcf_cutoff_ctrl_modwheel:                  break;
301                      VCFCutoffCtrl.controller = 1;              case ::gig::lfo2_ctrl_foot:
302                      break;                  lfo2_internal_depth  = 0;
303                  case ::gig::vcf_cutoff_ctrl_effect1:                  pLFO2->ExtController = 4; // MIDI controller 4
304                      VCFCutoffCtrl.controller = 12;                  bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
305                      break;                  break;
306                  case ::gig::vcf_cutoff_ctrl_effect2:              case ::gig::lfo2_ctrl_internal_modwheel:
307                      VCFCutoffCtrl.controller = 13;                  lfo2_internal_depth  = pRegion->LFO2InternalDepth;
308                      break;                  pLFO2->ExtController = 1; // MIDI controller 1
309                  case ::gig::vcf_cutoff_ctrl_breath:                  bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
310                      VCFCutoffCtrl.controller = 2;                  break;
311                      break;              case ::gig::lfo2_ctrl_internal_foot:
312                  case ::gig::vcf_cutoff_ctrl_foot:                  lfo2_internal_depth  = pRegion->LFO2InternalDepth;
313                      VCFCutoffCtrl.controller = 4;                  pLFO2->ExtController = 4; // MIDI controller 4
314                      break;                  bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
315                  case ::gig::vcf_cutoff_ctrl_sustainpedal:                  break;
316                      VCFCutoffCtrl.controller = 64;              default:
317                      break;                  lfo2_internal_depth  = 0;
318                  case ::gig::vcf_cutoff_ctrl_softpedal:                  pLFO2->ExtController = 0; // no external controller
319                      VCFCutoffCtrl.controller = 67;                  bLFO2Enabled         = false;
320                      break;          }
321                  case ::gig::vcf_cutoff_ctrl_genpurpose7:          if (bLFO2Enabled) {
322                      VCFCutoffCtrl.controller = 82;              pLFO2->trigger(pRegion->LFO2Frequency,
323                      break;                             start_level_max,
324                  case ::gig::vcf_cutoff_ctrl_genpurpose8:                             lfo2_internal_depth,
325                      VCFCutoffCtrl.controller = 83;                             pRegion->LFO2ControlDepth,
326                      break;                             pRegion->LFO2FlipPhase,
327                  case ::gig::vcf_cutoff_ctrl_aftertouch: //TODO: not implemented yet                             pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
328                  case ::gig::vcf_cutoff_ctrl_none:              pLFO2->updateByMIDICtrlValue(pLFO2->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO2->ExtController] : 0);
                 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;  
                 // VCFVelocityScale in this case means Minimum cutoff  
                 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 = (cutoff < 0.5 ? cutoff * 4826 - 1 : cutoff * 5715 - 449);  
             if (cutoff < 1.0) cutoff = 1.0;  
   
             // calculate resonance  
             float resonance = (float) (VCFResonanceCtrl.controller ? VCFResonanceCtrl.value : pDimRgn->VCFResonance) * 0.00787f; // 0.0..1.0  
   
             VCFCutoffCtrl.fvalue    = cutoff - 1.0;  
             VCFResonanceCtrl.fvalue = resonance;  
         }  
         else {  
             VCFCutoffCtrl.controller    = 0;  
             VCFResonanceCtrl.controller = 0;  
329          }          }
   
         return 0; // success  
330      }      }
331    
332      /**      void Voice::InitLFO3() {
333       *  Renders the audio data for this voice for the current audio fragment.          uint16_t lfo3_internal_depth;
334       *  The sample input data can either come from RAM (cached sample or sample          switch (pRegion->LFO3Controller) {
335       *  part) or directly from disk. The output signal will be rendered by              case ::gig::lfo3_ctrl_internal:
336       *  resampling / interpolation. If this voice is a disk streaming voice and                  lfo3_internal_depth  = pRegion->LFO3InternalDepth;
337       *  the voice completely played back the cached RAM part of the sample, it                  pLFO3->ExtController = 0; // no external controller
338       *  will automatically switch to disk playback for the next RenderAudio()                  bLFO3Enabled         = (lfo3_internal_depth > 0);
339       *  call.                  break;
340       *              case ::gig::lfo3_ctrl_modwheel:
341       *  @param Samples - number of samples to be rendered in this audio fragment cycle                  lfo3_internal_depth  = 0;
342       */                  pLFO3->ExtController = 1; // MIDI controller 1
343      void Voice::Render(uint Samples) {                  bLFO3Enabled         = (pRegion->LFO3ControlDepth > 0);
344                    break;
345          // select default values for synthesis mode bits              case ::gig::lfo3_ctrl_aftertouch:
346          SYNTHESIS_MODE_SET_LOOP(SynthesisMode, false);                  lfo3_internal_depth  = 0;
347                    pLFO3->ExtController = CTRL_TABLE_IDX_AFTERTOUCH;
348          switch (this->PlaybackState) {                  bLFO3Enabled         = true;
349                    break;
350              case playback_state_init:              case ::gig::lfo3_ctrl_internal_modwheel:
351                  this->PlaybackState = playback_state_ram; // we always start playback from RAM cache and switch then to disk if needed                  lfo3_internal_depth  = pRegion->LFO3InternalDepth;
352                  // no break - continue with playback_state_ram                  pLFO3->ExtController = 1; // MIDI controller 1
353                    bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
354              case playback_state_ram: {                  break;
355                      if (RAMLoop) SYNTHESIS_MODE_SET_LOOP(SynthesisMode, true); // enable looping              case ::gig::lfo3_ctrl_internal_aftertouch:
356                    lfo3_internal_depth  = pRegion->LFO3InternalDepth;
357                      // render current fragment                  pLFO3->ExtController = CTRL_TABLE_IDX_AFTERTOUCH;
358                      Synthesize(Samples, (sample_t*) pSample->GetCache().pStart, Delay);                  bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
359                    break;
360                      if (DiskVoice) {              default:
361                          // check if we reached the allowed limit of the sample RAM cache                  lfo3_internal_depth  = 0;
362                          if (finalSynthesisParameters.dPos > MaxRAMPos) {                  pLFO3->ExtController = 0; // no external controller
363                              dmsg(5,("Voice: switching to disk playback (Pos=%f)\n", finalSynthesisParameters.dPos));                  bLFO3Enabled         = false;
364                              this->PlaybackState = playback_state_disk;          }
365                          }          if (bLFO3Enabled) {
366                      } else if (finalSynthesisParameters.dPos >= pSample->GetCache().Size / pSample->FrameSize) {              pLFO3->trigger(pRegion->LFO3Frequency,
367                          this->PlaybackState = playback_state_end;                             start_level_mid,
368                      }                             lfo3_internal_depth,
369                  }                             pRegion->LFO3ControlDepth,
370                  break;                             false,
371                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
372              case playback_state_disk: {              pLFO3->updateByMIDICtrlValue(pLFO3->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO3->ExtController] : 0);
373                      if (!DiskStreamRef.pStream) {              pLFO3->setScriptDepthFactor(pNote->Override.PitchLFODepth);
374                          // check if the disk thread created our ordered disk stream in the meantime              pLFO3->setScriptFrequencyFactor(pNote->Override.PitchLFOFreq, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
                         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);  
             }  
375          }          }
376      }      }
377    
378      /**      float Voice::CalculateCutoffBase(uint8_t MIDIKeyVelocity) {
379       * Process given list of MIDI control change and pitch bend events for          float cutoff = pRegion->GetVelocityCutoff(MIDIKeyVelocity);
380       * the given time.          if (pRegion->VCFKeyboardTracking) {
381       *              cutoff *= RTMath::CentsToFreqRatioUnlimited((MIDIKey() - pRegion->VCFKeyboardTrackingBreakpoint) * 100);
382       * @param itEvent - iterator pointing to the next event to be processed          }
383       * @param End     - youngest time stamp where processing should be stopped          return cutoff;
384       */      }
385      void Voice::processCCEvents(RTList<Event>::Iterator& itEvent, uint End) {  
386          for (; itEvent && itEvent->FragmentPos() <= End; ++itEvent) {      float Voice::CalculateFinalCutoff(float cutoffBase) {
387              if (itEvent->Type == Event::type_control_change &&          int cvalue;
388                  itEvent->Param.CC.Controller) { // if (valid) MIDI control change event          if (VCFCutoffCtrl.controller) {
389                  if (itEvent->Param.CC.Controller == VCFCutoffCtrl.controller) {              cvalue = GetGigEngineChannel()->ControllerTable[VCFCutoffCtrl.controller];
390                      processCutoffEvent(itEvent);              if (pRegion->VCFCutoffControllerInvert) cvalue = 127 - cvalue;
391                  }              // VCFVelocityScale in this case means Minimum cutoff
392                  if (itEvent->Param.CC.Controller == VCFResonanceCtrl.controller) {              if (cvalue < pRegion->VCFVelocityScale) cvalue = pRegion->VCFVelocityScale;
                     processResonanceEvent(itEvent);  
                 }  
                 if (itEvent->Param.CC.Controller == pLFO1->ExtController) {  
                     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) {  
                     CrossfadeSmoother.update(Engine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.CC.Value)]);  
                 }  
                 if (itEvent->Param.CC.Controller == 7) { // volume  
                     VolumeSmoother.update(Engine::VolumeCurve[itEvent->Param.CC.Value] * CONFIG_GLOBAL_ATTENUATION);  
                 } else if (itEvent->Param.CC.Controller == 10) { // panpot  
                     PanLeftSmoother.update(Engine::PanCurve[128 - itEvent->Param.CC.Value]);  
                     PanRightSmoother.update(Engine::PanCurve[itEvent->Param.CC.Value]);  
                 }  
             } else if (itEvent->Type == Event::type_pitchbend) { // if pitch bend event  
                 processPitchEvent(itEvent);  
             }  
393          }          }
394      }          else {
395                cvalue = pRegion->VCFCutoff;
396            }
397            float fco = cutoffBase * float(cvalue);
398            if (fco > 127.0f) fco = 127.0f;
399    
400      void Voice::processPitchEvent(RTList<Event>::Iterator& itEvent) {          return fco;
         const float pitch = RTMath::CentsToFreqRatio(((double) itEvent->Param.Pitch.Pitch / 8192.0) * 200.0); // +-two semitones = +-200 cents  
         finalSynthesisParameters.fFinalPitch *= pitch;  
         PitchBend = pitch;  
401      }      }
402    
403      void Voice::processCutoffEvent(RTList<Event>::Iterator& itEvent) {      uint8_t Voice::GetVCFCutoffCtrl() {
404          int ccvalue = itEvent->Param.CC.Value;          uint8_t ctrl;
405          if (VCFCutoffCtrl.value == ccvalue) return;          switch (pRegion->VCFCutoffController) {
406          VCFCutoffCtrl.value == ccvalue;              case ::gig::vcf_cutoff_ctrl_modwheel:
407          if (pDimRgn->VCFCutoffControllerInvert)  ccvalue = 127 - ccvalue;                  ctrl = 1;
408          if (ccvalue < pDimRgn->VCFVelocityScale) ccvalue = pDimRgn->VCFVelocityScale;                  break;
409          float cutoff = CutoffBase * float(ccvalue) * 0.00787402f; // (1 / 127)              case ::gig::vcf_cutoff_ctrl_effect1:
410          if (cutoff > 1.0) cutoff = 1.0;                  ctrl = 12;
411          cutoff = (cutoff < 0.5 ? cutoff * 4826 - 1 : cutoff * 5715 - 449);                  break;
412          if (cutoff < 1.0) cutoff = 1.0;              case ::gig::vcf_cutoff_ctrl_effect2:
413                    ctrl = 13;
414                    break;
415                case ::gig::vcf_cutoff_ctrl_breath:
416                    ctrl = 2;
417                    break;
418                case ::gig::vcf_cutoff_ctrl_foot:
419                    ctrl = 4;
420                    break;
421                case ::gig::vcf_cutoff_ctrl_sustainpedal:
422                    ctrl = 64;
423                    break;
424                case ::gig::vcf_cutoff_ctrl_softpedal:
425                    ctrl = 67;
426                    break;
427                case ::gig::vcf_cutoff_ctrl_genpurpose7:
428                    ctrl = 82;
429                    break;
430                case ::gig::vcf_cutoff_ctrl_genpurpose8:
431                    ctrl = 83;
432                    break;
433                case ::gig::vcf_cutoff_ctrl_aftertouch:
434                    ctrl = CTRL_TABLE_IDX_AFTERTOUCH;
435                    break;
436                case ::gig::vcf_cutoff_ctrl_none:
437                default:
438                    ctrl = 0;
439                    break;
440            }
441    
442          VCFCutoffCtrl.fvalue = cutoff - 1.0; // needed for initialization of fFinalCutoff next time          return ctrl;
         fFinalCutoff = cutoff;  
443      }      }
444    
445      void Voice::processResonanceEvent(RTList<Event>::Iterator& itEvent) {      uint8_t Voice::GetVCFResonanceCtrl() {
446          // convert absolute controller value to differential          uint8_t ctrl;
447          const int ctrldelta = itEvent->Param.CC.Value - VCFResonanceCtrl.value;          switch (pRegion->VCFResonanceController) {
448          VCFResonanceCtrl.value = itEvent->Param.CC.Value;              case ::gig::vcf_res_ctrl_genpurpose3:
449          const float resonancedelta = (float) ctrldelta * 0.00787f; // 0.0..1.0                  ctrl = 18;
450          fFinalResonance += resonancedelta;                  break;
451          // needed for initialization of parameter              case ::gig::vcf_res_ctrl_genpurpose4:
452          VCFResonanceCtrl.fvalue = itEvent->Param.CC.Value * 0.00787f;                  ctrl = 19;
453      }                  break;
454                case ::gig::vcf_res_ctrl_genpurpose5:
455      /**                  ctrl = 80;
456       *  Synthesizes the current audio fragment for this voice.                  break;
457       *              case ::gig::vcf_res_ctrl_genpurpose6:
458       *  @param Samples - number of sample points to be rendered in this audio                  ctrl = 81;
459       *                   fragment cycle                  break;
460       *  @param pSrc    - pointer to input sample data              case ::gig::vcf_res_ctrl_none:
461       *  @param Skip    - number of sample points to skip in output buffer              default:
462       */                  ctrl = 0;
     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 killPos;  
         if (itKillEvent) killPos = RTMath::Min(itKillEvent->FragmentPos(), pEngine->MaxFadeOutPos);  
   
         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;  
             fFinalCutoff    = VCFCutoffCtrl.fvalue;  
             fFinalResonance = VCFResonanceCtrl.fvalue;  
   
             // process MIDI control change and pitchbend events for this subfragment  
             processCCEvents(itCCEvent, iSubFragmentEnd);  
   
             float fFinalVolume = VolumeSmoother.render() * CrossfadeSmoother.render();  
 #ifdef CONFIG_PROCESS_MUTED_CHANNELS  
             if (pEngineChannel->GetMute()) fFinalVolume = 0;  
 #endif  
   
             // process transition events (note on, note off & sustain pedal)  
             processTransitionEvents(itNoteEvent, iSubFragmentEnd);  
   
             // if the voice was killed in this subfragment switch EG1 to fade out stage  
             if (itKillEvent && killPos <= iSubFragmentEnd) {  
                 EG1.enterFadeOutStage();  
                 itKillEvent = Pool<Event>::Iterator();  
             }  
   
             // 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 *= 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 + 1.0, fFinalResonance, pEngine->SampleRate);  
                 finalSynthesisParameters.filterRight.SetParameters(fFinalCutoff + 1.0, 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.uiToGo            = iSubFragmentEnd - i;  
 #ifdef CONFIG_INTERPOLATE_VOLUME  
             finalSynthesisParameters.fFinalVolumeDeltaLeft  =  
                 (fFinalVolume * VolumeLeft  * PanLeftSmoother.render() -  
                  finalSynthesisParameters.fFinalVolumeLeft) / finalSynthesisParameters.uiToGo;  
             finalSynthesisParameters.fFinalVolumeDeltaRight =  
                 (fFinalVolume * VolumeRight * PanRightSmoother.render() -  
                  finalSynthesisParameters.fFinalVolumeRight) / finalSynthesisParameters.uiToGo;  
 #else  
             finalSynthesisParameters.fFinalVolumeLeft  =  
                 fFinalVolume * VolumeLeft  * PanLeftSmoother.render();  
             finalSynthesisParameters.fFinalVolumeRight =  
                 fFinalVolume * VolumeRight * PanRightSmoother.render();  
 #endif  
             // render audio for one subfragment  
             RunSynthesisFunction(SynthesisMode, &finalSynthesisParameters, &loop);  
   
             // stop the rendering if volume EG is finished  
             if (EG1.getSegmentType() == EGADSR::segment_end) break;  
   
             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);  
                 }  
   
                 EG1.increment(1);  
                 if (!EG1.toStageEndLeft()) EG1.update(EGADSR::event_stage_end, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
             }  
             if (EG2.active()) {  
                 EG2.increment(1);  
                 if (!EG2.toStageEndLeft()) EG2.update(EGADSR::event_stage_end, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
             }  
             EG3.increment(1);  
             if (!EG3.toEndLeft()) EG3.update(); // neutralize envelope coefficient if end reached  
   
             Pos = newPos;  
             i = iSubFragmentEnd;  
463          }          }
     }  
464    
465      /** @brief Update current portamento position.          return ctrl;
466       *      }
      * Will be called when portamento mode is enabled to get the final  
      * portamento position of this active voice from where the next voice(s)  
      * might continue to slide on.  
      *  
      * @param itNoteOffEvent - event which causes this voice to die soon  
      */  
     void Voice::UpdatePortamentoPos(Pool<Event>::Iterator& itNoteOffEvent) {  
         const float fFinalEG3Level = EG3.level(itNoteOffEvent->FragmentPos());  
         pEngineChannel->PortamentoPos = (float) MIDIKey + RTMath::FreqRatioToCents(fFinalEG3Level) * 0.01f;  
     }  
   
     /**  
      *  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  
467    
468          if (itTriggerEvent && itKillEvent->FragmentPos() <= itTriggerEvent->FragmentPos()) return;      void Voice::TriggerEG1(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
469          this->itKillEvent = itKillEvent;          EG1.trigger(pRegion->EG1PreAttack,
470                        RTMath::Max(pRegion->EG1Attack, 0.0316) * egInfo.Attack,
471                        pRegion->EG1Hold,
472                        pRegion->EG1Decay1 * egInfo.Decay * velrelease,
473                        pRegion->EG1Decay2 * egInfo.Decay * velrelease,
474                        pRegion->EG1InfiniteSustain,
475                        pRegion->EG1Sustain,
476                        RTMath::Max(pRegion->EG1Release * velrelease, 0.014) * egInfo.Release,
477                        velocityAttenuation,
478                        sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
479        }
480    
481        void Voice::TriggerEG2(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
482            EG2.trigger(uint(RgnInfo.EG2PreAttack),
483                        RgnInfo.EG2Attack * egInfo.Attack,
484                        false,
485                        RgnInfo.EG2Decay1 * egInfo.Decay * velrelease,
486                        RgnInfo.EG2Decay2 * egInfo.Decay * velrelease,
487                        RgnInfo.EG2InfiniteSustain,
488                        uint(RgnInfo.EG2Sustain),
489                        RgnInfo.EG2Release * egInfo.Release * velrelease,
490                        velocityAttenuation,
491                        sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
492        }
493    
494        void Voice::ProcessGroupEvent(RTList<Event>::Iterator& itEvent) {
495            dmsg(4,("Voice %p processGroupEvents event type=%d", (void*)this, itEvent->Type));
496    
497            // TODO: The SustainPedal condition could be wrong, maybe the
498            // check should be if this Voice is in release stage or is a
499            // release sample instead. Need to test this in GSt.
500            // -- Andreas
501            //
502            // Commented sustain pedal check out. I don't think voices of the same
503            // note should be stopped at all, because it doesn't sound naturally
504            // with a drumkit.
505            // -- Christian, 2013-01-08
506            if (itEvent->Param.Note.Key != HostKey() /*||
507                !GetGigEngineChannel()->SustainPedal*/) {
508                dmsg(4,("Voice %p - kill", (void*)this));
509    
510                // kill the voice fast
511                pEG1->enterFadeOutStage();
512            }
513        }
514    
515        void Voice::CalculateFadeOutCoeff(float FadeOutTime, float SampleRate) {
516            EG1.CalculateFadeOutCoeff(FadeOutTime, SampleRate);
517        }
518    
519        int Voice::CalculatePan(uint8_t pan) {
520            int p;
521            // Gst behaviour: -64 and 63 are special cases
522            if (RgnInfo.Pan == -64)     p = pan * 2 - 127;
523            else if (RgnInfo.Pan == 63) p = pan * 2;
524            else                        p = pan + RgnInfo.Pan;
525    
526            if (p < 0) return 0;
527            if (p > 127) return 127;
528            return p;
529      }      }
530    
531  }} // namespace LinuxSampler::gig  }} // namespace LinuxSampler::gig
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