/[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 3626 by schoenebeck, Thu Oct 3 14:40:17 2019 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 Christian Schoenebeck and Grigor Iliev             *
8     *   Copyright (C) 2010 - 2017 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());      // sanity checks: fromGigLfoWave() assumes equally mapped enums
37        static_assert(::gig::lfo_wave_sine == LFO::wave_sine);
38      float Voice::CalculateFilterCutoffCoeff() {      static_assert(::gig::lfo_wave_triangle == LFO::wave_triangle);
39          return log(CONFIG_FILTER_CUTOFF_MAX / CONFIG_FILTER_CUTOFF_MIN);      static_assert(::gig::lfo_wave_saw == LFO::wave_saw);
40        static_assert(::gig::lfo_wave_square == LFO::wave_square);
41    
42        // converts ::gig::lfo_wave_t (libgig) -> LFO::wave_t (LinuxSampler)
43        inline LFO::wave_t fromGigLfoWave(::gig::lfo_wave_t wave) {
44            // simply assuming equally mapped enums on both sides
45            return static_cast<LFO::wave_t>(wave);
46      }      }
47    
48      Voice::Voice() {      Voice::Voice() {
49          pEngine     = NULL;          pEngine = NULL;
50          pDiskThread = NULL;          pEG1 = &EG1;
51          PlaybackState = playback_state_end;          pEG2 = &EG2;
         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());  
   
         finalSynthesisParameters.filterLeft.Reset();  
         finalSynthesisParameters.filterRight.Reset();  
52      }      }
53    
54      Voice::~Voice() {      Voice::~Voice() {
         if (pLFO1) delete pLFO1;  
         if (pLFO2) delete pLFO2;  
         if (pLFO3) delete pLFO3;  
55      }      }
56    
57      void Voice::SetEngine(Engine* pEngine) {      EngineChannel* Voice::GetGigEngineChannel() {
58          this->pEngine     = pEngine;          return static_cast<EngineChannel*>(pEngineChannel);
         this->pDiskThread = pEngine->pDiskThread;  
         dmsg(6,("Voice::SetEngine()\n"));  
59      }      }
60    
61      /**      void Voice::SetEngine(LinuxSampler::Engine* pEngine) {
62       *  Initializes and triggers the voice, a disk stream will be launched if          Engine* engine = static_cast<Engine*>(pEngine);
63       *  needed.          this->pEngine     = engine;
64       *          this->pDiskThread = engine->pDiskThread;
65       *  @param pEngineChannel - engine channel on which this voice was ordered          dmsg(6,("Voice::SetEngine()\n"));
66       *  @param itNoteOnEvent  - event that caused triggering of this voice      }
      *  @param PitchBend      - MIDI detune factor (-8192 ... +8191)  
      *  @param pDimRgn        - points to the dimension region which provides sample wave(s) and articulation data  
      *  @param VoiceType      - type of this voice  
      *  @param iKeyGroup      - a value > 0 defines a key group in which this voice is member of  
      *  @returns 0 on success, a value < 0 if the voice wasn't triggered  
      *           (either due to an error or e.g. because no region is  
      *           defined for the given key)  
      */  
     int Voice::Trigger(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent, int PitchBend, ::gig::DimensionRegion* pDimRgn, type_t VoiceType, int iKeyGroup) {  
         this->pEngineChannel = pEngineChannel;  
         this->pDimRgn        = pDimRgn;  
   
         #if CONFIG_DEVMODE  
         if (itNoteOnEvent->FragmentPos() > pEngine->MaxSamplesPerCycle) { // just a sanity check for debugging  
             dmsg(1,("Voice::Trigger(): ERROR, TriggerDelay > Totalsamples\n"));  
         }  
         #endif // CONFIG_DEVMODE  
   
         Type            = VoiceType;  
         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;  
         }  
   
         // select channel mode (mono or stereo)  
         SYNTHESIS_MODE_SET_CHANNELS(SynthesisMode, pSample->Channels == 2);  
   
         // get starting crossfade volume level  
         switch (pDimRgn->AttenuationController.type) {  
             case ::gig::attenuation_ctrl_t::type_channelaftertouch:  
                 CrossfadeVolume = 1.0f; //TODO: aftertouch not supported yet  
                 break;  
             case ::gig::attenuation_ctrl_t::type_velocity:  
                 CrossfadeVolume = CrossfadeAttenuation(itNoteOnEvent->Param.Note.Velocity);  
                 break;  
             case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate  
                 CrossfadeVolume = CrossfadeAttenuation(pEngineChannel->ControllerTable[pDimRgn->AttenuationController.controller_number]);  
                 break;  
             case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined  
             default:  
                 CrossfadeVolume = 1.0f;  
         }  
67    
68          PanLeft  = 1.0f - float(RTMath::Max(pDimRgn->Pan, 0)) /  63.0f;      Voice::SampleInfo Voice::GetSampleInfo() {
69          PanRight = 1.0f - float(RTMath::Min(pDimRgn->Pan, 0)) / -64.0f;          SampleInfo si;
70            si.SampleRate       = pSample->SamplesPerSecond;
71            si.ChannelCount     = pSample->Channels;
72            si.FrameSize        = pSample->FrameSize;
73            si.BitDepth         = pSample->BitDepth;
74            si.TotalFrameCount  = (uint)pSample->SamplesTotal;
75    
76          finalSynthesisParameters.dPos = pDimRgn->SampleStartOffset; // offset where we should start playback of sample (0 - 2000 sample points)          si.HasLoops       = pRegion->SampleLoops;
77          Pos = pDimRgn->SampleStartOffset;          si.LoopStart      = (si.HasLoops) ? pRegion->pSampleLoops[0].LoopStart  : 0;
78            si.LoopLength     = (si.HasLoops) ? pRegion->pSampleLoops[0].LoopLength : 0;
79            si.LoopPlayCount  = pSample->LoopPlayCount;
80            si.Unpitched      = !pRegion->PitchTrack;
81    
82          // Check if the sample needs disk streaming or is too short for that          return si;
83          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;  
84    
85              if (pDiskThread->OrderNewStream(&DiskStreamRef, pSample, MaxRAMPos, !RAMLoop) < 0) {      Voice::RegionInfo Voice::GetRegionInfo() {
86                  dmsg(1,("Disk stream order failed!\n"));          RegionInfo ri;
87                  KillImmediately();          ri.UnityNote = pRegion->UnityNote;
88                  return -1;          ri.FineTune  = pRegion->FineTune;
89              }          ri.Pan       = pRegion->Pan;
90              dmsg(4,("Disk voice launched (cached samples: %d, total Samples: %d, MaxRAMPos: %d, RAMLooping: %s)\n", cachedsamples, pSample->SamplesTotal, MaxRAMPos, (RAMLoop) ? "yes" : "no"));          ri.SampleStartOffset = pRegion->SampleStartOffset;
         }  
         else { // RAM only voice  
             MaxRAMPos = cachedsamples;  
             if (pSample->Loops) {  
                 RAMLoop           = true;  
                 loop.uiCyclesLeft = pSample->LoopPlayCount;  
             }  
             else RAMLoop = false;  
             dmsg(4,("RAM only voice launched (Looping: %s)\n", (RAMLoop) ? "yes" : "no"));  
         }  
91    
92            ri.EG2PreAttack        = pRegion->EG2PreAttack;
93            ri.EG2Attack           = pRegion->EG2Attack;
94            ri.EG2Decay1           = pRegion->EG2Decay1;
95            ri.EG2Decay2           = pRegion->EG2Decay2;
96            ri.EG2Sustain          = pRegion->EG2Sustain;
97            ri.EG2InfiniteSustain  = pRegion->EG2InfiniteSustain;
98            ri.EG2Release          = pRegion->EG2Release;
99    
100          // calculate initial pitch value          ri.EG3Attack     = pRegion->EG3Attack;
101          {          ri.EG3Depth      = pRegion->EG3Depth;
102              double pitchbasecents = pDimRgn->FineTune + (int) pEngine->ScaleTuning[MIDIKey % 12];          ri.VCFEnabled    = pRegion->VCFEnabled;
103              if (pDimRgn->PitchTrack) pitchbasecents += (MIDIKey - (int) pDimRgn->UnityNote) * 100;          ri.VCFType       = Filter::vcf_type_t(pRegion->VCFType);
104              this->PitchBase = RTMath::CentsToFreqRatio(pitchbasecents) * (double(pSample->SamplesPerSecond) / double(pEngine->SampleRate));          ri.VCFResonance  = pRegion->VCFResonance;
             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;  
105    
106              // calculate influence of EG1 controller on EG1's parameters          ri.ReleaseTriggerDecay = 0.01053 * (256 >> pRegion->ReleaseTriggerDecay);
             // (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);  
         }  
107    
108            return ri;
109        }
110    
111          // setup EG 2 (VCF Cutoff EG)      Voice::InstrumentInfo Voice::GetInstrumentInfo() {
112          {          InstrumentInfo ii;
113              // get current value of EG2 controller          ii.FineTune = GetGigEngineChannel()->pInstrument->FineTune;
114              double eg2controllervalue;          ii.PitchbendRange = GetGigEngineChannel()->pInstrument->PitchbendRange;
             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;  
115    
116              // calculate influence of EG2 controller on EG2's parameters          return ii;
117              double eg2attack  = (pDimRgn->EG2ControllerAttackInfluence)  ? 1 + 0.00775 * (double) (1 << pDimRgn->EG2ControllerAttackInfluence)  * eg2controllervalue : 1.0;      }
             double eg2decay   = (pDimRgn->EG2ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pDimRgn->EG2ControllerDecayInfluence)   * eg2controllervalue : 1.0;  
             double eg2release = (pDimRgn->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pDimRgn->EG2ControllerReleaseInfluence) * eg2controllervalue : 1.0;  
   
             EG2.trigger(pDimRgn->EG2PreAttack,  
                         pDimRgn->EG2Attack * eg2attack,  
                         false,  
                         pDimRgn->EG2Decay1 * eg2decay * velrelease,  
                         pDimRgn->EG2Decay2 * eg2decay * velrelease,  
                         pDimRgn->EG2InfiniteSustain,  
                         pDimRgn->EG2Sustain,  
                         pDimRgn->EG2Release * eg2release * velrelease,  
                         velocityAttenuation,  
                         pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
         }  
118    
119        double Voice::GetSampleAttenuation() {
120            return pRegion->SampleAttenuation;
121        }
122    
123          // setup EG 3 (VCO EG)      double Voice::GetVelocityAttenuation(uint8_t MIDIKeyVelocity) {
124          {          return pRegion->GetVelocityAttenuation(MIDIKeyVelocity);
125            double eg3depth = RTMath::CentsToFreqRatio(pDimRgn->EG3Depth);      }
           EG3.trigger(eg3depth, pDimRgn->EG3Attack, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
         }  
126    
127        double Voice::GetVelocityRelease(uint8_t MIDIKeyVelocity) {
128            return pRegion->GetVelocityRelease(MIDIKeyVelocity);
129        }
130    
131          // setup LFO 1 (VCA LFO)      void Voice::ProcessCCEvent(RTList<Event>::Iterator& itEvent) {
132          {          if (itEvent->Type == Event::type_control_change && itEvent->Param.CC.Controller) { // if (valid) MIDI control change event
133              uint16_t lfo1_internal_depth;              if (pRegion->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&
134              switch (pDimRgn->LFO1Controller) {                  itEvent->Param.CC.Controller == pRegion->AttenuationController.controller_number) {
135                  case ::gig::lfo1_ctrl_internal:                  CrossfadeSmoother.update(AbstractEngine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.CC.Value)]);
                     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;  
136              }              }
             if (bLFO1Enabled) pLFO1->trigger(pDimRgn->LFO1Frequency,  
                                              start_level_max,  
                                              lfo1_internal_depth,  
                                              pDimRgn->LFO1ControlDepth,  
                                              pDimRgn->LFO1FlipPhase,  
                                              pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
137          }          }
138        }
139    
140        void Voice::ProcessChannelPressureEvent(RTList<Event>::Iterator& itEvent) {
141          // setup LFO 2 (VCF Cutoff LFO)          if (itEvent->Type == Event::type_channel_pressure) { // if (valid) MIDI channel pressure (aftertouch) event
142          {              if (pRegion->AttenuationController.type == ::gig::attenuation_ctrl_t::type_channelaftertouch) {
143              uint16_t lfo2_internal_depth;                  CrossfadeSmoother.update(AbstractEngine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.ChannelPressure.Value)]);
             switch (pDimRgn->LFO2Controller) {  
                 case ::gig::lfo2_ctrl_internal:  
                     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;  
144              }              }
             if (bLFO2Enabled) pLFO2->trigger(pDimRgn->LFO2Frequency,  
                                              start_level_max,  
                                              lfo2_internal_depth,  
                                              pDimRgn->LFO2ControlDepth,  
                                              pDimRgn->LFO2FlipPhase,  
                                              pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
145          }          }
146        }
147    
148        void Voice::ProcessPolyphonicKeyPressureEvent(RTList<Event>::Iterator& itEvent) {
149            // Not used so far
150        }
151    
152          // setup LFO 3 (VCO LFO)      void Voice::ProcessCutoffEvent(RTList<Event>::Iterator& itEvent) {
153          {          int ccvalue = itEvent->Param.CC.Value;
154              uint16_t lfo3_internal_depth;          if (VCFCutoffCtrl.value == ccvalue) return;
155              switch (pDimRgn->LFO3Controller) {          VCFCutoffCtrl.value = ccvalue;
156                  case ::gig::lfo3_ctrl_internal:          if (pRegion->VCFCutoffControllerInvert)  ccvalue = 127 - ccvalue;
157                      lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;          if (ccvalue < pRegion->VCFVelocityScale) ccvalue = pRegion->VCFVelocityScale;
158                      pLFO3->ExtController = 0; // no external controller          float cutoff = CutoffBase * float(ccvalue);
159                      bLFO3Enabled         = (lfo3_internal_depth > 0);          if (cutoff > 127.0f) cutoff = 127.0f;
                     break;  
                 case ::gig::lfo3_ctrl_modwheel:  
                     lfo3_internal_depth  = 0;  
                     pLFO3->ExtController = 1; // MIDI controller 1  
                     bLFO3Enabled         = (pDimRgn->LFO3ControlDepth > 0);  
                     break;  
                 case ::gig::lfo3_ctrl_aftertouch:  
                     lfo3_internal_depth  = 0;  
                     pLFO3->ExtController = 0; // TODO: aftertouch not implemented yet  
                     bLFO3Enabled         = false; // see TODO comment in line above  
                     break;  
                 case ::gig::lfo3_ctrl_internal_modwheel:  
                     lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;  
                     pLFO3->ExtController = 1; // MIDI controller 1  
                     bLFO3Enabled         = (lfo3_internal_depth > 0 || pDimRgn->LFO3ControlDepth > 0);  
                     break;  
                 case ::gig::lfo3_ctrl_internal_aftertouch:  
                     lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;  
                     pLFO1->ExtController = 0; // TODO: aftertouch not implemented yet  
                     bLFO3Enabled         = (lfo3_internal_depth > 0 /*|| pDimRgn->LFO3ControlDepth > 0*/); // see TODO comment in line above  
                     break;  
                 default:  
                     lfo3_internal_depth  = 0;  
                     pLFO3->ExtController = 0; // no external controller  
                     bLFO3Enabled         = false;  
             }  
             if (bLFO3Enabled) pLFO3->trigger(pDimRgn->LFO3Frequency,  
                                              start_level_mid,  
                                              lfo3_internal_depth,  
                                              pDimRgn->LFO3ControlDepth,  
                                              false,  
                                              pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
         }  
160    
161            VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of fFinalCutoff next time
162            fFinalCutoff = cutoff;
163        }
164    
165          #if CONFIG_FORCE_FILTER      double Voice::CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity) {
166          const bool bUseFilter = true;          float crossfadeVolume;
167          #else // use filter only if instrument file told so          switch (pRegion->AttenuationController.type) {
168          const bool bUseFilter = pDimRgn->VCFEnabled;              case ::gig::attenuation_ctrl_t::type_channelaftertouch:
169          #endif // CONFIG_FORCE_FILTER                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[128])];
170          SYNTHESIS_MODE_SET_FILTER(SynthesisMode, bUseFilter);                  break;
171          if (bUseFilter) {              case ::gig::attenuation_ctrl_t::type_velocity:
172              #ifdef CONFIG_OVERRIDE_CUTOFF_CTRL                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(MIDIKeyVelocity)];
173              VCFCutoffCtrl.controller = CONFIG_OVERRIDE_CUTOFF_CTRL;                  break;
174              #else // use the one defined in the instrument file              case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate
175              switch (pDimRgn->VCFCutoffController) {                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[pRegion->AttenuationController.controller_number])];
176                  case ::gig::vcf_cutoff_ctrl_modwheel:                  break;
177                      VCFCutoffCtrl.controller = 1;              case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined
178                      break;              default:
179                  case ::gig::vcf_cutoff_ctrl_effect1:                  crossfadeVolume = 1.0f;
180                      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  
181    
182              #ifdef CONFIG_OVERRIDE_RESONANCE_CTRL          return crossfadeVolume;
183              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  
184    
185              #ifndef CONFIG_OVERRIDE_FILTER_TYPE      double Voice::GetEG1ControllerValue(uint8_t MIDIKeyVelocity) {
186              finalSynthesisParameters.filterLeft.SetType(pDimRgn->VCFType);          double eg1controllervalue = 0;
187              finalSynthesisParameters.filterRight.SetType(pDimRgn->VCFType);          switch (pRegion->EG1Controller.type) {
188              #else // override filter type              case ::gig::eg1_ctrl_t::type_none: // no controller defined
189              FilterLeft.SetType(CONFIG_OVERRIDE_FILTER_TYPE);                  eg1controllervalue = 0;
190              FilterRight.SetType(CONFIG_OVERRIDE_FILTER_TYPE);                  break;
191              #endif // CONFIG_OVERRIDE_FILTER_TYPE              case ::gig::eg1_ctrl_t::type_channelaftertouch:
192                    eg1controllervalue = GetGigEngineChannel()->ControllerTable[128];
193              VCFCutoffCtrl.value    = pEngineChannel->ControllerTable[VCFCutoffCtrl.controller];                  break;
194              VCFResonanceCtrl.value = pEngineChannel->ControllerTable[VCFResonanceCtrl.controller];              case ::gig::eg1_ctrl_t::type_velocity:
195                    eg1controllervalue = MIDIKeyVelocity;
196              // calculate cutoff frequency                  break;
197              float cutoff = pDimRgn->GetVelocityCutoff(itNoteOnEvent->Param.Note.Velocity);              case ::gig::eg1_ctrl_t::type_controlchange: // MIDI control change controller
198              if (pDimRgn->VCFKeyboardTracking) {                  eg1controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG1Controller.controller_number];
199                  cutoff *= exp((itNoteOnEvent->Param.Note.Key - pDimRgn->VCFKeyboardTrackingBreakpoint) * 0.057762265f); // (ln(2) / 12)                  break;
200              }          }
201              CutoffBase = cutoff;          if (pRegion->EG1ControllerInvert) eg1controllervalue = 127 - eg1controllervalue;
202    
203              int cvalue;          return eg1controllervalue;
204              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)  
205    
206              VCFCutoffCtrl.fvalue    = cutoff - CONFIG_FILTER_CUTOFF_MIN;      Voice::EGInfo Voice::CalculateEG1ControllerInfluence(double eg1ControllerValue) {
207              VCFResonanceCtrl.fvalue = resonance;          EGInfo eg;
208          }          // (eg1attack is different from the others)
209          else {          if (pRegion->EG1Attack < 1e-8 && // attack in gig == 0
210              VCFCutoffCtrl.controller    = 0;              (pRegion->EG1ControllerAttackInfluence == 0 ||
211              VCFResonanceCtrl.controller = 0;               eg1ControllerValue <= 10)) { // strange GSt special case
212                eg.Attack = 0; // this will force the attack to be 0 in the call to EG1.trigger
213            } else {
214                eg.Attack  = (pRegion->EG1ControllerAttackInfluence)  ?
215                    1 + 0.031 * (double) (pRegion->EG1ControllerAttackInfluence == 1 ?
216                                          1 : 1 << pRegion->EG1ControllerAttackInfluence) * eg1ControllerValue : 1.0;
217            }
218            eg.Decay   = (pRegion->EG1ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerDecayInfluence)   * eg1ControllerValue : 1.0;
219            eg.Release = (pRegion->EG1ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerReleaseInfluence) * eg1ControllerValue : 1.0;
220    
221            return eg;
222        }
223    
224        double Voice::GetEG2ControllerValue(uint8_t MIDIKeyVelocity) {
225            double eg2controllervalue = 0;
226            switch (pRegion->EG2Controller.type) {
227                case ::gig::eg2_ctrl_t::type_none: // no controller defined
228                    eg2controllervalue = 0;
229                    break;
230                case ::gig::eg2_ctrl_t::type_channelaftertouch:
231                    eg2controllervalue = GetGigEngineChannel()->ControllerTable[128];
232                    break;
233                case ::gig::eg2_ctrl_t::type_velocity:
234                    eg2controllervalue = MIDIKeyVelocity;
235                    break;
236                case ::gig::eg2_ctrl_t::type_controlchange: // MIDI control change controller
237                    eg2controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG2Controller.controller_number];
238                    break;
239          }          }
240            if (pRegion->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue;
241    
242          return 0; // success          return eg2controllervalue;
243      }      }
244    
245      /**      Voice::EGInfo Voice::CalculateEG2ControllerInfluence(double eg2ControllerValue) {
246       *  Renders the audio data for this voice for the current audio fragment.          EGInfo eg;
247       *  The sample input data can either come from RAM (cached sample or sample          eg.Attack  = (pRegion->EG2ControllerAttackInfluence)  ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerAttackInfluence)  * eg2ControllerValue : 1.0;
248       *  part) or directly from disk. The output signal will be rendered by          eg.Decay   = (pRegion->EG2ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerDecayInfluence)   * eg2ControllerValue : 1.0;
249       *  resampling / interpolation. If this voice is a disk streaming voice and          eg.Release = (pRegion->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerReleaseInfluence) * eg2ControllerValue : 1.0;
250       *  the voice completely played back the cached RAM part of the sample, it  
251       *  will automatically switch to disk playback for the next RenderAudio()          return eg;
      *  call.  
      *  
      *  @param Samples - number of samples to be rendered in this audio fragment cycle  
      */  
     void Voice::Render(uint Samples) {  
   
         // select default values for synthesis mode bits  
         SYNTHESIS_MODE_SET_LOOP(SynthesisMode, false);  
   
         switch (this->PlaybackState) {  
   
             case playback_state_init:  
                 this->PlaybackState = playback_state_ram; // we always start playback from RAM cache and switch then to disk if needed  
                 // no break - continue with playback_state_ram  
   
             case playback_state_ram: {  
                     if (RAMLoop) SYNTHESIS_MODE_SET_LOOP(SynthesisMode, true); // enable looping  
   
                     // render current fragment  
                     Synthesize(Samples, (sample_t*) pSample->GetCache().pStart, Delay);  
   
                     if (DiskVoice) {  
                         // check if we reached the allowed limit of the sample RAM cache  
                         if (finalSynthesisParameters.dPos > MaxRAMPos) {  
                             dmsg(5,("Voice: switching to disk playback (Pos=%f)\n", finalSynthesisParameters.dPos));  
                             this->PlaybackState = playback_state_disk;  
                         }  
                     } else if (finalSynthesisParameters.dPos >= pSample->GetCache().Size / pSample->FrameSize) {  
                         this->PlaybackState = playback_state_end;  
                     }  
                 }  
                 break;  
   
             case playback_state_disk: {  
                     if (!DiskStreamRef.pStream) {  
                         // check if the disk thread created our ordered disk stream in the meantime  
                         DiskStreamRef.pStream = pDiskThread->AskForCreatedStream(DiskStreamRef.OrderID);  
                         if (!DiskStreamRef.pStream) {  
                             std::cout << stderr << "Disk stream not available in time!" << std::endl << std::flush;  
                             KillImmediately();  
                             return;  
                         }  
                         DiskStreamRef.pStream->IncrementReadPos(pSample->Channels * (int(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);  
             }  
         }  
252      }      }
253    
254      /**      void Voice::InitLFO1() {
255       * Process given list of MIDI control change and pitch bend events for          uint16_t lfo1_internal_depth;
256       * the given time.          switch (pRegion->LFO1Controller) {
257       *              case ::gig::lfo1_ctrl_internal:
258       * @param itEvent - iterator pointing to the next event to be processed                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
259       * @param End     - youngest time stamp where processing should be stopped                  pLFO1->ExtController = 0; // no external controller
260       */                  bLFO1Enabled         = (lfo1_internal_depth > 0);
261      void Voice::processCCEvents(RTList<Event>::Iterator& itEvent, uint End) {                  break;
262          for (; itEvent && itEvent->FragmentPos() <= End; ++itEvent) {              case ::gig::lfo1_ctrl_modwheel:
263              if (itEvent->Type == Event::type_control_change &&                  lfo1_internal_depth  = 0;
264                  itEvent->Param.CC.Controller) { // if (valid) MIDI control change event                  pLFO1->ExtController = 1; // MIDI controller 1
265                  if (itEvent->Param.CC.Controller == VCFCutoffCtrl.controller) {                  bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
266                      processCutoffEvent(itEvent);                  break;
267                  }              case ::gig::lfo1_ctrl_breath:
268                  if (itEvent->Param.CC.Controller == VCFResonanceCtrl.controller) {                  lfo1_internal_depth  = 0;
269                      processResonanceEvent(itEvent);                  pLFO1->ExtController = 2; // MIDI controller 2
270                  }                  bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
271                  if (itEvent->Param.CC.Controller == pLFO1->ExtController) {                  break;
272                      pLFO1->update(itEvent->Param.CC.Value);              case ::gig::lfo1_ctrl_internal_modwheel:
273                  }                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
274                  if (itEvent->Param.CC.Controller == pLFO2->ExtController) {                  pLFO1->ExtController = 1; // MIDI controller 1
275                      pLFO2->update(itEvent->Param.CC.Value);                  bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
276                  }                  break;
277                  if (itEvent->Param.CC.Controller == pLFO3->ExtController) {              case ::gig::lfo1_ctrl_internal_breath:
278                      pLFO3->update(itEvent->Param.CC.Value);                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
279                  }                  pLFO1->ExtController = 2; // MIDI controller 2
280                  if (pDimRgn->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&                  bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
281                      itEvent->Param.CC.Controller == pDimRgn->AttenuationController.controller_number) {                  break;
282                      processCrossFadeEvent(itEvent);              default:
283                  }                  lfo1_internal_depth  = 0;
284              } else if (itEvent->Type == Event::type_pitchbend) { // if pitch bend event                  pLFO1->ExtController = 0; // no external controller
285                  processPitchEvent(itEvent);                  bLFO1Enabled         = false;
286              }          }
287            if (bLFO1Enabled) {
288                pLFO1->trigger(fromGigLfoWave(pRegion->LFO1WaveForm),
289                               pRegion->LFO1Frequency,
290                               pRegion->LFO1Phase,
291                               LFO::start_level_mid, // see https://sourceforge.net/p/linuxsampler/mailman/linuxsampler-devel/thread/2189307.cNP0Xbctxq%40silver/#msg36774029
292                               lfo1_internal_depth,
293                               pRegion->LFO1ControlDepth,
294                               pRegion->LFO1FlipPhase,
295                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
296                pLFO1->updateByMIDICtrlValue(pLFO1->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO1->ExtController] : 0);
297                pLFO1->setScriptDepthFactor(
298                    pNote->Override.AmpLFODepth.Value,
299                    pNote->Override.AmpLFODepth.Final
300                );
301                if (pNote->Override.AmpLFOFreq.isFinal())
302                    pLFO1->setScriptFrequencyFinal(
303                        pNote->Override.AmpLFOFreq.Value, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE
304                    );
305                else
306                    pLFO1->setScriptFrequencyFactor(
307                        pNote->Override.AmpLFOFreq.Value, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE
308                    );
309          }          }
310      }      }
311    
312      void Voice::processPitchEvent(RTList<Event>::Iterator& itEvent) {      void Voice::InitLFO2() {
313          const float pitch = RTMath::CentsToFreqRatio(((double) itEvent->Param.Pitch.Pitch / 8192.0) * 200.0); // +-two semitones = +-200 cents          uint16_t lfo2_internal_depth;
314          finalSynthesisParameters.fFinalPitch *= pitch;          switch (pRegion->LFO2Controller) {
315          PitchBend = pitch;              case ::gig::lfo2_ctrl_internal:
316      }                  lfo2_internal_depth  = pRegion->LFO2InternalDepth;
317                    pLFO2->ExtController = 0; // no external controller
318      void Voice::processCrossFadeEvent(RTList<Event>::Iterator& itEvent) {                  bLFO2Enabled         = (lfo2_internal_depth > 0);
319          CrossfadeVolume = CrossfadeAttenuation(itEvent->Param.CC.Value);                  break;
320          #if CONFIG_PROCESS_MUTED_CHANNELS              case ::gig::lfo2_ctrl_modwheel:
321          const float effectiveVolume = CrossfadeVolume * Volume * (pEngineChannel->GetMute() ? 0 : pEngineChannel->GlobalVolume);                  lfo2_internal_depth  = 0;
322          #else                  pLFO2->ExtController = 1; // MIDI controller 1
323          const float effectiveVolume = CrossfadeVolume * Volume * pEngineChannel->GlobalVolume;                  bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
324          #endif                  break;
325          fFinalVolume = effectiveVolume;              case ::gig::lfo2_ctrl_foot:
326                    lfo2_internal_depth  = 0;
327                    pLFO2->ExtController = 4; // MIDI controller 4
328                    bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
329                    break;
330                case ::gig::lfo2_ctrl_internal_modwheel:
331                    lfo2_internal_depth  = pRegion->LFO2InternalDepth;
332                    pLFO2->ExtController = 1; // MIDI controller 1
333                    bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
334                    break;
335                case ::gig::lfo2_ctrl_internal_foot:
336                    lfo2_internal_depth  = pRegion->LFO2InternalDepth;
337                    pLFO2->ExtController = 4; // MIDI controller 4
338                    bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
339                    break;
340                default:
341                    lfo2_internal_depth  = 0;
342                    pLFO2->ExtController = 0; // no external controller
343                    bLFO2Enabled         = false;
344            }
345            if (bLFO2Enabled) {
346                pLFO2->trigger(fromGigLfoWave(pRegion->LFO2WaveForm),
347                               pRegion->LFO2Frequency,
348                               pRegion->LFO2Phase,
349                               LFO::start_level_mid, // see https://sourceforge.net/p/linuxsampler/mailman/linuxsampler-devel/thread/2189307.cNP0Xbctxq%40silver/#msg36774029
350                               lfo2_internal_depth,
351                               pRegion->LFO2ControlDepth,
352                               pRegion->LFO2FlipPhase,
353                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
354                pLFO2->updateByMIDICtrlValue(pLFO2->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO2->ExtController] : 0);
355                pLFO2->setScriptDepthFactor(
356                    pNote->Override.CutoffLFODepth.Value,
357                    pNote->Override.CutoffLFODepth.Final
358                );
359                if (pNote->Override.CutoffLFOFreq.isFinal())
360                    pLFO2->setScriptFrequencyFinal(pNote->Override.CutoffLFOFreq.Value, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
361                else
362                    pLFO2->setScriptFrequencyFactor(pNote->Override.CutoffLFOFreq.Value, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
363            }
364      }      }
365    
366      void Voice::processCutoffEvent(RTList<Event>::Iterator& itEvent) {      void Voice::InitLFO3() {
367          int ccvalue = itEvent->Param.CC.Value;          uint16_t lfo3_internal_depth;
368          if (VCFCutoffCtrl.value == ccvalue) return;          switch (pRegion->LFO3Controller) {
369          VCFCutoffCtrl.value == ccvalue;              case ::gig::lfo3_ctrl_internal:
370          if (pDimRgn->VCFCutoffControllerInvert)  ccvalue = 127 - ccvalue;                  lfo3_internal_depth  = pRegion->LFO3InternalDepth;
371          if (ccvalue < pDimRgn->VCFVelocityScale) ccvalue = pDimRgn->VCFVelocityScale;                  pLFO3->ExtController = 0; // no external controller
372          float cutoff = CutoffBase * float(ccvalue) * 0.00787402f; // (1 / 127)                  bLFO3Enabled         = (lfo3_internal_depth > 0);
373          if (cutoff > 1.0) cutoff = 1.0;                  break;
374          cutoff = exp(cutoff * FILTER_CUTOFF_COEFF) * CONFIG_FILTER_CUTOFF_MIN - CONFIG_FILTER_CUTOFF_MIN;              case ::gig::lfo3_ctrl_modwheel:
375          VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of fFinalCutoff next time                  lfo3_internal_depth  = 0;
376          fFinalCutoff = cutoff;                  pLFO3->ExtController = 1; // MIDI controller 1
377                    bLFO3Enabled         = (pRegion->LFO3ControlDepth > 0);
378                    break;
379                case ::gig::lfo3_ctrl_aftertouch:
380                    lfo3_internal_depth  = 0;
381                    pLFO3->ExtController = CTRL_TABLE_IDX_AFTERTOUCH;
382                    bLFO3Enabled         = true;
383                    break;
384                case ::gig::lfo3_ctrl_internal_modwheel:
385                    lfo3_internal_depth  = pRegion->LFO3InternalDepth;
386                    pLFO3->ExtController = 1; // MIDI controller 1
387                    bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
388                    break;
389                case ::gig::lfo3_ctrl_internal_aftertouch:
390                    lfo3_internal_depth  = pRegion->LFO3InternalDepth;
391                    pLFO3->ExtController = CTRL_TABLE_IDX_AFTERTOUCH;
392                    bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
393                    break;
394                default:
395                    lfo3_internal_depth  = 0;
396                    pLFO3->ExtController = 0; // no external controller
397                    bLFO3Enabled         = false;
398            }
399            if (bLFO3Enabled) {
400                pLFO3->trigger(fromGigLfoWave(pRegion->LFO3WaveForm),
401                               pRegion->LFO3Frequency,
402                               pRegion->LFO3Phase,
403                               LFO::start_level_max, // see https://sourceforge.net/p/linuxsampler/mailman/linuxsampler-devel/thread/2189307.cNP0Xbctxq%40silver/#msg36774029
404                               lfo3_internal_depth,
405                               pRegion->LFO3ControlDepth,
406                               pRegion->LFO3FlipPhase,
407                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
408                pLFO3->updateByMIDICtrlValue(pLFO3->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO3->ExtController] : 0);
409                pLFO3->setScriptDepthFactor(
410                    pNote->Override.PitchLFODepth.Value,
411                    pNote->Override.PitchLFODepth.Final
412                );
413                if (pNote->Override.PitchLFOFreq.isFinal())
414                    pLFO3->setScriptFrequencyFinal(pNote->Override.PitchLFOFreq.Value, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
415                else
416                    pLFO3->setScriptFrequencyFactor(pNote->Override.PitchLFOFreq.Value, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
417            }
418      }      }
419    
420      void Voice::processResonanceEvent(RTList<Event>::Iterator& itEvent) {      float Voice::CalculateCutoffBase(uint8_t MIDIKeyVelocity) {
421          // convert absolute controller value to differential          float cutoff = pRegion->GetVelocityCutoff(MIDIKeyVelocity);
422          const int ctrldelta = itEvent->Param.CC.Value - VCFResonanceCtrl.value;          if (pRegion->VCFKeyboardTracking) {
423          VCFResonanceCtrl.value = itEvent->Param.CC.Value;              cutoff *= RTMath::CentsToFreqRatioUnlimited((MIDIKey() - pRegion->VCFKeyboardTrackingBreakpoint) * 100);
424          const float resonancedelta = (float) ctrldelta * 0.00787f; // 0.0..1.0          }
425          fFinalResonance += resonancedelta;          return cutoff;
426          // needed for initialization of parameter      }
427          VCFResonanceCtrl.fvalue = itEvent->Param.CC.Value * 0.00787f;  
428      }      float Voice::CalculateFinalCutoff(float cutoffBase) {
429            int cvalue;
430      /**          if (VCFCutoffCtrl.controller) {
431       *  Synthesizes the current audio fragment for this voice.              cvalue = GetGigEngineChannel()->ControllerTable[VCFCutoffCtrl.controller];
432       *              if (pRegion->VCFCutoffControllerInvert) cvalue = 127 - cvalue;
433       *  @param Samples - number of sample points to be rendered in this audio              // VCFVelocityScale in this case means Minimum cutoff
434       *                   fragment cycle              if (cvalue < pRegion->VCFVelocityScale) cvalue = pRegion->VCFVelocityScale;
435       *  @param pSrc    - pointer to input sample data          }
436       *  @param Skip    - number of sample points to skip in output buffer          else {
437       */              cvalue = pRegion->VCFCutoff;
438      void Voice::Synthesize(uint Samples, sample_t* pSrc, uint Skip) {          }
439          finalSynthesisParameters.pOutLeft  = &pEngineChannel->pOutputLeft[Skip];          float fco = cutoffBase * float(cvalue);
440          finalSynthesisParameters.pOutRight = &pEngineChannel->pOutputRight[Skip];          if (fco > 127.0f) fco = 127.0f;
         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());  
441    
442              // process low frequency oscillators          return fco;
443              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);  
             }  
444    
445              // do we need resampling?      uint8_t Voice::GetVCFCutoffCtrl() {
446              const float __PLUS_ONE_CENT  = 1.000577789506554859250142541782224725466f;          uint8_t ctrl;
447              const float __MINUS_ONE_CENT = 0.9994225441413807496009516495583113737666f;          switch (pRegion->VCFCutoffController) {
448              const bool bResamplingRequired = !(finalSynthesisParameters.fFinalPitch <= __PLUS_ONE_CENT &&              case ::gig::vcf_cutoff_ctrl_modwheel:
449                                                 finalSynthesisParameters.fFinalPitch >= __MINUS_ONE_CENT);                  ctrl = 1;
450              SYNTHESIS_MODE_SET_INTERPOLATE(SynthesisMode, bResamplingRequired);                  break;
451                case ::gig::vcf_cutoff_ctrl_effect1:
452              // prepare final synthesis parameters structure                  ctrl = 12;
453              finalSynthesisParameters.fFinalVolumeLeft  = fFinalVolume * PanLeft;                  break;
454              finalSynthesisParameters.fFinalVolumeRight = fFinalVolume * PanRight;              case ::gig::vcf_cutoff_ctrl_effect2:
455              finalSynthesisParameters.uiToGo            = iSubFragmentEnd - i;                  ctrl = 13;
456                    break;
457              // render audio for one subfragment              case ::gig::vcf_cutoff_ctrl_breath:
458              RunSynthesisFunction(SynthesisMode, &finalSynthesisParameters, &loop);                  ctrl = 2;
459                    break;
460              const double newPos = Pos + (iSubFragmentEnd - i) * finalSynthesisParameters.fFinalPitch;              case ::gig::vcf_cutoff_ctrl_foot:
461                    ctrl = 4;
462              // increment envelopes' positions                  break;
463              if (EG1.active()) {              case ::gig::vcf_cutoff_ctrl_sustainpedal:
464                    ctrl = 64;
465                  // 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                  break;
466                  if (pSample->Loops && Pos <= pSample->LoopStart && pSample->LoopStart < newPos) {              case ::gig::vcf_cutoff_ctrl_softpedal:
467                      EG1.update(EGADSR::event_hold_end, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);                  ctrl = 67;
468                  }                  break;
469                case ::gig::vcf_cutoff_ctrl_genpurpose7:
470                    ctrl = 82;
471                    break;
472                case ::gig::vcf_cutoff_ctrl_genpurpose8:
473                    ctrl = 83;
474                    break;
475                case ::gig::vcf_cutoff_ctrl_aftertouch:
476                    ctrl = CTRL_TABLE_IDX_AFTERTOUCH;
477                    break;
478                case ::gig::vcf_cutoff_ctrl_none:
479                default:
480                    ctrl = 0;
481                    break;
482            }
483    
484                  EG1.increment(1);          return ctrl;
485                  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  
486    
487              Pos = newPos;      uint8_t Voice::GetVCFResonanceCtrl() {
488              i = iSubFragmentEnd;          uint8_t ctrl;
489            switch (pRegion->VCFResonanceController) {
490                case ::gig::vcf_res_ctrl_genpurpose3:
491                    ctrl = 18;
492                    break;
493                case ::gig::vcf_res_ctrl_genpurpose4:
494                    ctrl = 19;
495                    break;
496                case ::gig::vcf_res_ctrl_genpurpose5:
497                    ctrl = 80;
498                    break;
499                case ::gig::vcf_res_ctrl_genpurpose6:
500                    ctrl = 81;
501                    break;
502                case ::gig::vcf_res_ctrl_none:
503                default:
504                    ctrl = 0;
505          }          }
     }  
506    
507      /**          return ctrl;
508       *  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  
509    
510          if (itTriggerEvent && itKillEvent->FragmentPos() <= itTriggerEvent->FragmentPos()) return;      void Voice::TriggerEG1(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
511          this->itKillEvent = itKillEvent;          EG1.setStateOptions(
512                pRegion->EG1Options.AttackCancel,
513                pRegion->EG1Options.AttackHoldCancel,
514                pRegion->EG1Options.Decay1Cancel,
515                pRegion->EG1Options.Decay2Cancel,
516                pRegion->EG1Options.ReleaseCancel
517            );
518            EG1.trigger(pRegion->EG1PreAttack,
519                        (pNote && pNote->Override.Attack.isFinal()) ?
520                            pNote->Override.Attack.Value :
521                            RTMath::Max(pRegion->EG1Attack, 0.0316) * egInfo.Attack,
522                        pRegion->EG1Hold,
523                        (pNote && pNote->Override.Decay.isFinal()) ?
524                            pNote->Override.Decay.Value :
525                            pRegion->EG1Decay1 * egInfo.Decay * velrelease,
526                        (pNote && pNote->Override.Decay.isFinal()) ?
527                            pNote->Override.Decay.Value :
528                            pRegion->EG1Decay2 * egInfo.Decay * velrelease,
529                        pRegion->EG1InfiniteSustain,
530                        (pNote && pNote->Override.Sustain.Final) ?
531                            uint(pNote->Override.Sustain.Value * 1000.f) :
532                            pRegion->EG1Sustain * (pNote ? pNote->Override.Sustain.Value : 1.f),
533                        (pNote && pNote->Override.Release.isFinal()) ?
534                            pNote->Override.Release.Value :
535                            RTMath::Max(pRegion->EG1Release * velrelease, 0.014) * egInfo.Release,
536                        velocityAttenuation,
537                        sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
538        }
539    
540        void Voice::TriggerEG2(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
541            EG2.setStateOptions(
542                pRegion->EG2Options.AttackCancel,
543                pRegion->EG2Options.AttackHoldCancel,
544                pRegion->EG2Options.Decay1Cancel,
545                pRegion->EG2Options.Decay2Cancel,
546                pRegion->EG2Options.ReleaseCancel
547            );
548            EG2.trigger(uint(RgnInfo.EG2PreAttack),
549                        (pNote && pNote->Override.CutoffAttack.isFinal()) ?
550                            pNote->Override.CutoffAttack.Value :
551                            RgnInfo.EG2Attack * egInfo.Attack,
552                        false,
553                        (pNote && pNote->Override.CutoffDecay.isFinal()) ?
554                            pNote->Override.CutoffDecay.Value :
555                            RgnInfo.EG2Decay1 * egInfo.Decay * velrelease,
556                        (pNote && pNote->Override.CutoffDecay.isFinal()) ?
557                            pNote->Override.CutoffDecay.Value :
558                            RgnInfo.EG2Decay2 * egInfo.Decay * velrelease,
559                        RgnInfo.EG2InfiniteSustain,
560                        (pNote && pNote->Override.CutoffSustain.Final) ?
561                            uint(pNote->Override.CutoffSustain.Value * 1000.f) :
562                            uint(RgnInfo.EG2Sustain),
563                        (pNote && pNote->Override.CutoffRelease.isFinal()) ?
564                            pNote->Override.CutoffRelease.Value :
565                            RgnInfo.EG2Release * egInfo.Release * velrelease,
566                        velocityAttenuation,
567                        sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
568        }
569    
570        void Voice::ProcessGroupEvent(RTList<Event>::Iterator& itEvent) {
571            dmsg(4,("Voice %p processGroupEvents event type=%d", (void*)this, itEvent->Type));
572    
573            // TODO: The SustainPedal condition could be wrong, maybe the
574            // check should be if this Voice is in release stage or is a
575            // release sample instead. Need to test this in GSt.
576            // -- Andreas
577            //
578            // Commented sustain pedal check out. I don't think voices of the same
579            // note should be stopped at all, because it doesn't sound naturally
580            // with a drumkit.
581            // -- Christian, 2013-01-08
582            if (itEvent->Param.Note.Key != HostKey() /*||
583                !GetGigEngineChannel()->SustainPedal*/) {
584                dmsg(4,("Voice %p - kill", (void*)this));
585    
586                // kill the voice fast
587                pEG1->enterFadeOutStage();
588            }
589        }
590    
591        void Voice::CalculateFadeOutCoeff(float FadeOutTime, float SampleRate) {
592            EG1.CalculateFadeOutCoeff(FadeOutTime, SampleRate);
593        }
594    
595        int Voice::CalculatePan(uint8_t pan) {
596            int p;
597            // Gst behaviour: -64 and 63 are special cases
598            if (RgnInfo.Pan == -64)     p = pan * 2 - 127;
599            else if (RgnInfo.Pan == 63) p = pan * 2;
600            else                        p = pan + RgnInfo.Pan;
601    
602            if (p < 0) return 0;
603            if (p > 127) return 127;
604            return p;
605        }
606    
607        release_trigger_t Voice::GetReleaseTriggerFlags() {
608            release_trigger_t flags =
609                (pRegion->NoNoteOffReleaseTrigger) ?
610                    release_trigger_none : release_trigger_noteoff; //HACK: currently this method is actually only called by EngineBase if it already knows that this voice requires release trigger, so I took the short way instead of checking (again) the existence of a ::gig::dimension_releasetrigger
611            switch (pRegion->SustainReleaseTrigger) {
612                case ::gig::sust_rel_trg_none:
613                    break;
614                case ::gig::sust_rel_trg_maxvelocity:
615                    flags |= release_trigger_sustain_maxvelocity;
616                    break;
617                case ::gig::sust_rel_trg_keyvelocity:
618                    flags |= release_trigger_sustain_keyvelocity;
619                    break;
620            }
621            return flags;
622      }      }
623    
624  }} // namespace LinuxSampler::gig  }} // namespace LinuxSampler::gig
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