/[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 3655 by schoenebeck, Fri Dec 13 17:14:48 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, 2006 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(int64_t(::gig::lfo_wave_sine) == int64_t(LFO::wave_sine),
38      float Voice::CalculateFilterCutoffCoeff() {                    "enum LFO::wave_t not equally value mapped to libgig's enum ::gig::lfo_wave_t");
39          return log(CONFIG_FILTER_CUTOFF_MAX / CONFIG_FILTER_CUTOFF_MIN);      static_assert(int64_t(::gig::lfo_wave_triangle) == int64_t(LFO::wave_triangle),
40                      "enum LFO::wave_t not equally value mapped to libgig's enum ::gig::lfo_wave_t");
41        static_assert(int64_t(::gig::lfo_wave_saw) == int64_t(LFO::wave_saw),
42                      "enum LFO::wave_t not equally value mapped to libgig's enum ::gig::lfo_wave_t");
43        static_assert(int64_t(::gig::lfo_wave_square) == int64_t(LFO::wave_square),
44                      "enum LFO::wave_t not equally value mapped to libgig's enum ::gig::lfo_wave_t");
45    
46        // converts ::gig::lfo_wave_t (libgig) -> LFO::wave_t (LinuxSampler)
47        inline LFO::wave_t fromGigLfoWave(::gig::lfo_wave_t wave) {
48            // simply assuming equally mapped enums on both sides
49            return static_cast<LFO::wave_t>(wave);
50        }
51    
52        // Returns true for GigaStudio's original filter types (which are resembled
53        // by LS very accurately with same frequency response and patch settings
54        // behaviour), false for our own LS specific filter implementation types.
55        constexpr bool isGStFilterType(::gig::vcf_type_t type) {
56            return type == ::gig::vcf_type_lowpass ||
57                   type == ::gig::vcf_type_lowpassturbo ||
58                   type == ::gig::vcf_type_bandpass ||
59                   type == ::gig::vcf_type_highpass ||
60                   type == ::gig::vcf_type_bandreject;
61      }      }
62    
63      Voice::Voice() {      Voice::Voice() {
64          pEngine     = NULL;          pEngine = NULL;
65          pDiskThread = NULL;          pEG1 = &EG1;
66          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();  
67      }      }
68    
69      Voice::~Voice() {      Voice::~Voice() {
         if (pLFO1) delete pLFO1;  
         if (pLFO2) delete pLFO2;  
         if (pLFO3) delete pLFO3;  
70      }      }
71    
72      void Voice::SetEngine(Engine* pEngine) {      EngineChannel* Voice::GetGigEngineChannel() {
73          this->pEngine     = pEngine;          return static_cast<EngineChannel*>(pEngineChannel);
74          this->pDiskThread = pEngine->pDiskThread;      }
75    
76        void Voice::SetEngine(LinuxSampler::Engine* pEngine) {
77            Engine* engine = static_cast<Engine*>(pEngine);
78            this->pEngine     = engine;
79            this->pDiskThread = engine->pDiskThread;
80          dmsg(6,("Voice::SetEngine()\n"));          dmsg(6,("Voice::SetEngine()\n"));
81      }      }
82    
83      /**      Voice::SampleInfo Voice::GetSampleInfo() {
84       *  Initializes and triggers the voice, a disk stream will be launched if          SampleInfo si;
85       *  needed.          si.SampleRate       = pSample->SamplesPerSecond;
86       *          si.ChannelCount     = pSample->Channels;
87       *  @param pEngineChannel - engine channel on which this voice was ordered          si.FrameSize        = pSample->FrameSize;
88       *  @param itNoteOnEvent  - event that caused triggering of this voice          si.BitDepth         = pSample->BitDepth;
89       *  @param PitchBend      - MIDI detune factor (-8192 ... +8191)          si.TotalFrameCount  = (uint)pSample->SamplesTotal;
90       *  @param pDimRgn        - points to the dimension region which provides sample wave(s) and articulation data  
91       *  @param VoiceType      - type of this voice          si.HasLoops       = pRegion->SampleLoops;
92       *  @param iKeyGroup      - a value > 0 defines a key group in which this voice is member of          si.LoopStart      = (si.HasLoops) ? pRegion->pSampleLoops[0].LoopStart  : 0;
93       *  @returns 0 on success, a value < 0 if the voice wasn't triggered          si.LoopLength     = (si.HasLoops) ? pRegion->pSampleLoops[0].LoopLength : 0;
94       *           (either due to an error or e.g. because no region is          si.LoopPlayCount  = pSample->LoopPlayCount;
95       *           defined for the given key)          si.Unpitched      = !pRegion->PitchTrack;
96       */  
97      int Voice::Trigger(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent, int PitchBend, ::gig::DimensionRegion* pDimRgn, type_t VoiceType, int iKeyGroup) {          return si;
98          this->pEngineChannel = pEngineChannel;      }
99          this->pDimRgn        = pDimRgn;  
100        Voice::RegionInfo Voice::GetRegionInfo() {
101          #if CONFIG_DEVMODE          RegionInfo ri;
102          if (itNoteOnEvent->FragmentPos() > pEngine->MaxSamplesPerCycle) { // just a sanity check for debugging          ri.UnityNote = pRegion->UnityNote;
103              dmsg(1,("Voice::Trigger(): ERROR, TriggerDelay > Totalsamples\n"));          ri.FineTune  = pRegion->FineTune;
104          }          ri.Pan       = pRegion->Pan;
105          #endif // CONFIG_DEVMODE          ri.SampleStartOffset = pRegion->SampleStartOffset;
106    
107          Type            = VoiceType;          ri.EG2PreAttack        = pRegion->EG2PreAttack;
108          MIDIKey         = itNoteOnEvent->Param.Note.Key;          ri.EG2Attack           = pRegion->EG2Attack;
109          PlaybackState   = playback_state_init; // mark voice as triggered, but no audio rendered yet          ri.EG2Decay1           = pRegion->EG2Decay1;
110          Delay           = itNoteOnEvent->FragmentPos();          ri.EG2Decay2           = pRegion->EG2Decay2;
111          itTriggerEvent  = itNoteOnEvent;          ri.EG2Sustain          = pRegion->EG2Sustain;
112          itKillEvent     = Pool<Event>::Iterator();          ri.EG2InfiniteSustain  = pRegion->EG2InfiniteSustain;
113          KeyGroup        = iKeyGroup;          ri.EG2Release          = pRegion->EG2Release;
114          pSample         = pDimRgn->pSample; // sample won't change until the voice is finished  
115            ri.EG3Attack     = pRegion->EG3Attack;
116          // calculate volume          ri.EG3Depth      = pRegion->EG3Depth;
117          const double velocityAttenuation = pDimRgn->GetVelocityAttenuation(itNoteOnEvent->Param.Note.Velocity);          ri.VCFEnabled    = pRegion->VCFEnabled;
118            ri.VCFType       = Filter::vcf_type_t(pRegion->VCFType);
119          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)          ri.VCFResonance  = pRegion->VCFResonance;
120    
121          volume *= pDimRgn->SampleAttenuation;          ri.ReleaseTriggerDecay = 0.01053 * (256 >> pRegion->ReleaseTriggerDecay);
122    
123          // the volume of release triggered samples depends on note length          return ri;
124          if (Type == type_release_trigger) {      }
125              float noteLength = float(pEngine->FrameTime + Delay -  
126                                       pEngineChannel->pMIDIKeyInfo[MIDIKey].NoteOnTime) / pEngine->SampleRate;      Voice::InstrumentInfo Voice::GetInstrumentInfo() {
127              float attenuation = 1 - 0.01053 * (256 >> pDimRgn->ReleaseTriggerDecay) * noteLength;          InstrumentInfo ii;
128              if (attenuation <= 0) return -1;          ii.FineTune = GetGigEngineChannel()->pInstrument->FineTune;
129              volume *= attenuation;          ii.PitchbendRange = GetGigEngineChannel()->pInstrument->PitchbendRange;
130    
131            return ii;
132        }
133    
134        double Voice::GetSampleAttenuation() {
135            return pRegion->SampleAttenuation;
136        }
137    
138        double Voice::GetVelocityAttenuation(uint8_t MIDIKeyVelocity) {
139            return pRegion->GetVelocityAttenuation(MIDIKeyVelocity);
140        }
141    
142        double Voice::GetVelocityRelease(uint8_t MIDIKeyVelocity) {
143            return pRegion->GetVelocityRelease(MIDIKeyVelocity);
144        }
145    
146        void Voice::ProcessCCEvent(RTList<Event>::Iterator& itEvent) {
147            if (itEvent->Type == Event::type_control_change && itEvent->Param.CC.Controller) { // if (valid) MIDI control change event
148                if (pRegion->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&
149                    itEvent->Param.CC.Controller == pRegion->AttenuationController.controller_number) {
150                    CrossfadeSmoother.update(AbstractEngine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.CC.Value)]);
151                }
152            }
153        }
154    
155        void Voice::ProcessChannelPressureEvent(RTList<Event>::Iterator& itEvent) {
156            if (itEvent->Type == Event::type_channel_pressure) { // if (valid) MIDI channel pressure (aftertouch) event
157                if (pRegion->AttenuationController.type == ::gig::attenuation_ctrl_t::type_channelaftertouch) {
158                    CrossfadeSmoother.update(AbstractEngine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.ChannelPressure.Value)]);
159                }
160            }
161        }
162    
163        void Voice::ProcessPolyphonicKeyPressureEvent(RTList<Event>::Iterator& itEvent) {
164            // Not used so far
165        }
166    
167        uint8_t Voice::MinCutoff() const {
168            // If there's a cutoff controller defined then VCFVelocityScale means
169            // "minimum cutoff". If there is no MIDI controller defined for cutoff
170            // then VCFVelocityScale is already taken into account on libgig side
171            // instead by call to pRegion->GetVelocityCutoff(MIDIKeyVelocity).
172            return pRegion->VCFVelocityScale;
173        }
174    
175        // This is called on any cutoff controller changes, however not when the
176        // voice is triggered. So the initial cutoff value is retrieved by a call
177        // to CalculateFinalCutoff() instead.
178        void Voice::ProcessCutoffEvent(RTList<Event>::Iterator& itEvent) {
179            if (VCFCutoffCtrl.value == itEvent->Param.CC.Value) return;
180            float ccvalue = VCFCutoffCtrl.value = itEvent->Param.CC.Value;
181    
182            // if the selected filter type is an official GigaStudio filter type
183            // then we preserve the original (no matter how odd) historical GSt
184            // behaviour identically; for our own filter types though we deviate to
185            // more meaningful behaviours where appropriate
186            const bool isGStFilter = isGStFilterType(pRegion->VCFType);
187    
188            if (pRegion->VCFCutoffControllerInvert) ccvalue = 127 - ccvalue;
189            if (isGStFilter) {
190                // VCFVelocityScale in this case means "minimum cutoff" for GSt
191                if (ccvalue < MinCutoff()) ccvalue = MinCutoff();
192            } else {
193                // for our own filter types we interpret "minimum cutoff"
194                // differently: GSt handles this as a simple hard limit with the
195                // consequence that a certain range of the controller is simply
196                // dead; so for our filter types we rather remap that to
197                // restrain within the min_cutoff..127 range as well, but
198                // effectively spanned over the entire controller range (0..127)
199                // to avoid such a "dead" lower controller zone
200                ccvalue = MinCutoff() + (ccvalue / 127.f) * float(127 - MinCutoff());
201            }
202    
203            float cutoff = CutoffBase * ccvalue;
204            if (cutoff > 127.0f) cutoff = 127.0f;
205    
206            // the filter implementations of the original GSt filter types take an
207            // abstract cutoff parameter range of 0..127, whereas our own filter
208            // types take a cutoff parameter in Hz, so remap here:
209            // 0 .. 127 [lin] -> 21 Hz .. 18 kHz [x^4] (center @2.2 kHz)
210            if (!isGStFilter) {
211                cutoff = (cutoff + 29.f) / (127.f + 29.f);
212                cutoff = cutoff * cutoff * cutoff * cutoff * 18000.f;
213                if (cutoff > 0.49f * pEngine->SampleRate)
214                    cutoff = 0.49f * pEngine->SampleRate;
215          }          }
216    
217          // select channel mode (mono or stereo)          fFinalCutoff = VCFCutoffCtrl.fvalue = cutoff;
218          SYNTHESIS_MODE_SET_CHANNELS(SynthesisMode, pSample->Channels == 2);      }
219    
220          // get starting crossfade volume level      double Voice::CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity) {
221          float crossfadeVolume;          float crossfadeVolume;
222          switch (pDimRgn->AttenuationController.type) {          switch (pRegion->AttenuationController.type) {
223              case ::gig::attenuation_ctrl_t::type_channelaftertouch:              case ::gig::attenuation_ctrl_t::type_channelaftertouch:
224                  crossfadeVolume = 1.0f; //TODO: aftertouch not supported yet                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[128])];
225                  break;                  break;
226              case ::gig::attenuation_ctrl_t::type_velocity:              case ::gig::attenuation_ctrl_t::type_velocity:
227                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(itNoteOnEvent->Param.Note.Velocity)];                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(MIDIKeyVelocity)];
228                  break;                  break;
229              case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate              case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate
230                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(pEngineChannel->ControllerTable[pDimRgn->AttenuationController.controller_number])];                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[pRegion->AttenuationController.controller_number])];
231                  break;                  break;
232              case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined              case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined
233              default:              default:
234                  crossfadeVolume = 1.0f;                  crossfadeVolume = 1.0f;
235          }          }
236    
237          VolumeLeft  = volume * Engine::PanCurve[64 - pDimRgn->Pan];          return crossfadeVolume;
238          VolumeRight = volume * Engine::PanCurve[64 + pDimRgn->Pan];      }
   
         float subfragmentRate = pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE;  
         CrossfadeSmoother.trigger(crossfadeVolume, subfragmentRate);  
         VolumeSmoother.trigger(pEngineChannel->GlobalVolume, subfragmentRate);  
         PanLeftSmoother.trigger(pEngineChannel->GlobalPanLeft, subfragmentRate);  
         PanRightSmoother.trigger(pEngineChannel->GlobalPanRight, subfragmentRate);  
   
         finalSynthesisParameters.dPos = pDimRgn->SampleStartOffset; // offset where we should start playback of sample (0 - 2000 sample points)  
         Pos = pDimRgn->SampleStartOffset;  
   
         // Check if the sample needs disk streaming or is too short for that  
         long cachedsamples = pSample->GetCache().Size / pSample->FrameSize;  
         DiskVoice          = cachedsamples < pSample->SamplesTotal;  
   
         if (DiskVoice) { // voice to be streamed from disk  
             MaxRAMPos = cachedsamples - (pEngine->MaxSamplesPerCycle << CONFIG_MAX_PITCH) / pSample->Channels; //TODO: this calculation is too pessimistic and may better be moved to Render() method, so it calculates MaxRAMPos dependent to the current demand of sample points to be rendered (e.g. in case of JACK)  
   
             // check if there's a loop defined which completely fits into the cached (RAM) part of the sample  
             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"));  
         }  
         else { // RAM only voice  
             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;  
   
             // calculate influence of EG1 controller on EG1's parameters  
             // (eg1attack is different from the others)  
             double eg1attack  = (pDimRgn->EG1ControllerAttackInfluence)  ?  
                 1 + 0.031 * (double) (pDimRgn->EG1ControllerAttackInfluence == 1 ?  
                                       1 : 1 << pDimRgn->EG1ControllerAttackInfluence) * eg1controllervalue : 1.0;  
             double eg1decay   = (pDimRgn->EG1ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pDimRgn->EG1ControllerDecayInfluence)   * eg1controllervalue : 1.0;  
             double eg1release = (pDimRgn->EG1ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pDimRgn->EG1ControllerReleaseInfluence) * eg1controllervalue : 1.0;  
   
             EG1.trigger(pDimRgn->EG1PreAttack,  
                         pDimRgn->EG1Attack * eg1attack,  
                         pDimRgn->EG1Hold,  
                         pDimRgn->EG1Decay1 * eg1decay * velrelease,  
                         pDimRgn->EG1Decay2 * eg1decay * velrelease,  
                         pDimRgn->EG1InfiniteSustain,  
                         pDimRgn->EG1Sustain,  
                         pDimRgn->EG1Release * eg1release * velrelease,  
                         velocityAttenuation,  
                         pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
         }  
   
 #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;  
   
             // calculate influence of EG2 controller on EG2's parameters  
             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);  
         }  
   
   
         // setup EG 3 (VCO EG)  
         {  
             // if portamento mode is on, we dedicate EG3 purely for portamento, otherwise if portamento is off we do as told by the patch  
             bool  bPortamento = pEngineChannel->PortamentoMode && pEngineChannel->PortamentoPos >= 0.0f;  
             float eg3depth = (bPortamento)  
                                  ? RTMath::CentsToFreqRatio((pEngineChannel->PortamentoPos - (float) MIDIKey) * 100)  
                                  : RTMath::CentsToFreqRatio(pDimRgn->EG3Depth);  
             float eg3time = (bPortamento)  
                                 ? pEngineChannel->PortamentoTime  
                                 : pDimRgn->EG3Attack;  
             EG3.trigger(eg3depth, eg3time, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
             dmsg(5,("PortamentoPos=%f, depth=%f, time=%f\n", pEngineChannel->PortamentoPos, eg3depth, eg3time));  
         }  
   
   
         // 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);  
             }  
         }  
   
239    
240          // setup LFO 2 (VCF Cutoff LFO)      double Voice::GetEG1ControllerValue(uint8_t MIDIKeyVelocity) {
241          {          double eg1controllervalue = 0;
242              uint16_t lfo2_internal_depth;          switch (pRegion->EG1Controller.type) {
243              switch (pDimRgn->LFO2Controller) {              case ::gig::eg1_ctrl_t::type_none: // no controller defined
244                  case ::gig::lfo2_ctrl_internal:                  eg1controllervalue = 0;
245                      lfo2_internal_depth  = pDimRgn->LFO2InternalDepth;                  break;
246                      pLFO2->ExtController = 0; // no external controller              case ::gig::eg1_ctrl_t::type_channelaftertouch:
247                      bLFO2Enabled         = (lfo2_internal_depth > 0);                  eg1controllervalue = GetGigEngineChannel()->ControllerTable[128];
248                      break;                  break;
249                  case ::gig::lfo2_ctrl_modwheel:              case ::gig::eg1_ctrl_t::type_velocity:
250                      lfo2_internal_depth  = 0;                  eg1controllervalue = MIDIKeyVelocity;
251                      pLFO2->ExtController = 1; // MIDI controller 1                  break;
252                      bLFO2Enabled         = (pDimRgn->LFO2ControlDepth > 0);              case ::gig::eg1_ctrl_t::type_controlchange: // MIDI control change controller
253                      break;                  eg1controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG1Controller.controller_number];
254                  case ::gig::lfo2_ctrl_foot:                  break;
                     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);  
             }  
255          }          }
256            if (pRegion->EG1ControllerInvert) eg1controllervalue = 127 - eg1controllervalue;
257    
258            return eg1controllervalue;
259        }
260    
261          // setup LFO 3 (VCO LFO)      Voice::EGInfo Voice::CalculateEG1ControllerInfluence(double eg1ControllerValue) {
262          {          EGInfo eg;
263              uint16_t lfo3_internal_depth;          // (eg1attack is different from the others)
264              switch (pDimRgn->LFO3Controller) {          if (pRegion->EG1Attack < 1e-8 && // attack in gig == 0
265                  case ::gig::lfo3_ctrl_internal:              (pRegion->EG1ControllerAttackInfluence == 0 ||
266                      lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;               eg1ControllerValue <= 10)) { // strange GSt special case
267                      pLFO3->ExtController = 0; // no external controller              eg.Attack = 0; // this will force the attack to be 0 in the call to EG1.trigger
268                      bLFO3Enabled         = (lfo3_internal_depth > 0);          } else {
269                      break;              eg.Attack  = (pRegion->EG1ControllerAttackInfluence)  ?
270                  case ::gig::lfo3_ctrl_modwheel:                  1 + 0.031 * (double) (pRegion->EG1ControllerAttackInfluence == 1 ?
271                      lfo3_internal_depth  = 0;                                        1 : 1 << pRegion->EG1ControllerAttackInfluence) * eg1ControllerValue : 1.0;
272                      pLFO3->ExtController = 1; // MIDI controller 1          }
273                      bLFO3Enabled         = (pDimRgn->LFO3ControlDepth > 0);          eg.Decay   = (pRegion->EG1ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerDecayInfluence)   * eg1ControllerValue : 1.0;
274                      break;          eg.Release = (pRegion->EG1ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerReleaseInfluence) * eg1ControllerValue : 1.0;
275                  case ::gig::lfo3_ctrl_aftertouch:  
276                      lfo3_internal_depth  = 0;          return eg;
277                      pLFO3->ExtController = 0; // TODO: aftertouch not implemented yet      }
278                      bLFO3Enabled         = false; // see TODO comment in line above  
279                      break;      double Voice::GetEG2ControllerValue(uint8_t MIDIKeyVelocity) {
280                  case ::gig::lfo3_ctrl_internal_modwheel:          double eg2controllervalue = 0;
281                      lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;          switch (pRegion->EG2Controller.type) {
282                      pLFO3->ExtController = 1; // MIDI controller 1              case ::gig::eg2_ctrl_t::type_none: // no controller defined
283                      bLFO3Enabled         = (lfo3_internal_depth > 0 || pDimRgn->LFO3ControlDepth > 0);                  eg2controllervalue = 0;
284                      break;                  break;
285                  case ::gig::lfo3_ctrl_internal_aftertouch:              case ::gig::eg2_ctrl_t::type_channelaftertouch:
286                      lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;                  eg2controllervalue = GetGigEngineChannel()->ControllerTable[128];
287                      pLFO1->ExtController = 0; // TODO: aftertouch not implemented yet                  break;
288                      bLFO3Enabled         = (lfo3_internal_depth > 0 /*|| pDimRgn->LFO3ControlDepth > 0*/); // see TODO comment in line above              case ::gig::eg2_ctrl_t::type_velocity:
289                      break;                  eg2controllervalue = MIDIKeyVelocity;
290                  default:                  break;
291                      lfo3_internal_depth  = 0;              case ::gig::eg2_ctrl_t::type_controlchange: // MIDI control change controller
292                      pLFO3->ExtController = 0; // no external controller                  eg2controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG2Controller.controller_number];
293                      bLFO3Enabled         = false;                  break;
             }  
             if (bLFO3Enabled) {  
                 pLFO3->trigger(pDimRgn->LFO3Frequency,  
                                start_level_mid,  
                                lfo3_internal_depth,  
                                pDimRgn->LFO3ControlDepth,  
                                false,  
                                pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
                 pLFO3->update(pLFO3->ExtController ? pEngineChannel->ControllerTable[pLFO3->ExtController] : 0);  
             }  
294          }          }
295            if (pRegion->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue;
296    
297            return eg2controllervalue;
298        }
299    
300          #if CONFIG_FORCE_FILTER      Voice::EGInfo Voice::CalculateEG2ControllerInfluence(double eg2ControllerValue) {
301          const bool bUseFilter = true;          EGInfo eg;
302          #else // use filter only if instrument file told so          eg.Attack  = (pRegion->EG2ControllerAttackInfluence)  ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerAttackInfluence)  * eg2ControllerValue : 1.0;
303          const bool bUseFilter = pDimRgn->VCFEnabled;          eg.Decay   = (pRegion->EG2ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerDecayInfluence)   * eg2ControllerValue : 1.0;
304          #endif // CONFIG_FORCE_FILTER          eg.Release = (pRegion->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerReleaseInfluence) * eg2ControllerValue : 1.0;
         SYNTHESIS_MODE_SET_FILTER(SynthesisMode, bUseFilter);  
         if (bUseFilter) {  
             #ifdef CONFIG_OVERRIDE_CUTOFF_CTRL  
             VCFCutoffCtrl.controller = CONFIG_OVERRIDE_CUTOFF_CTRL;  
             #else // use the one defined in the instrument file  
             switch (pDimRgn->VCFCutoffController) {  
                 case ::gig::vcf_cutoff_ctrl_modwheel:  
                     VCFCutoffCtrl.controller = 1;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_effect1:  
                     VCFCutoffCtrl.controller = 12;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_effect2:  
                     VCFCutoffCtrl.controller = 13;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_breath:  
                     VCFCutoffCtrl.controller = 2;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_foot:  
                     VCFCutoffCtrl.controller = 4;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_sustainpedal:  
                     VCFCutoffCtrl.controller = 64;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_softpedal:  
                     VCFCutoffCtrl.controller = 67;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_genpurpose7:  
                     VCFCutoffCtrl.controller = 82;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_genpurpose8:  
                     VCFCutoffCtrl.controller = 83;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_aftertouch: //TODO: not implemented yet  
                 case ::gig::vcf_cutoff_ctrl_none:  
                 default:  
                     VCFCutoffCtrl.controller = 0;  
                     break;  
             }  
             #endif // CONFIG_OVERRIDE_CUTOFF_CTRL  
   
             #ifdef CONFIG_OVERRIDE_RESONANCE_CTRL  
             VCFResonanceCtrl.controller = CONFIG_OVERRIDE_RESONANCE_CTRL;  
             #else // use the one defined in the instrument file  
             switch (pDimRgn->VCFResonanceController) {  
                 case ::gig::vcf_res_ctrl_genpurpose3:  
                     VCFResonanceCtrl.controller = 18;  
                     break;  
                 case ::gig::vcf_res_ctrl_genpurpose4:  
                     VCFResonanceCtrl.controller = 19;  
                     break;  
                 case ::gig::vcf_res_ctrl_genpurpose5:  
                     VCFResonanceCtrl.controller = 80;  
                     break;  
                 case ::gig::vcf_res_ctrl_genpurpose6:  
                     VCFResonanceCtrl.controller = 81;  
                     break;  
                 case ::gig::vcf_res_ctrl_none:  
                 default:  
                     VCFResonanceCtrl.controller = 0;  
             }  
             #endif // CONFIG_OVERRIDE_RESONANCE_CTRL  
305    
306              #ifndef CONFIG_OVERRIDE_FILTER_TYPE          return eg;
307              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;  
308    
309              int cvalue;      void Voice::InitLFO1() {
310              if (VCFCutoffCtrl.controller) {          uint16_t lfo1_internal_depth;
311                  cvalue = pEngineChannel->ControllerTable[VCFCutoffCtrl.controller];          switch (pRegion->LFO1Controller) {
312                  if (pDimRgn->VCFCutoffControllerInvert) cvalue = 127 - cvalue;              case ::gig::lfo1_ctrl_internal:
313                  // VCFVelocityScale in this case means Minimum cutoff                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
314                  if (cvalue < pDimRgn->VCFVelocityScale) cvalue = pDimRgn->VCFVelocityScale;                  pLFO1->ExtController = 0; // no external controller
315              }                  bLFO1Enabled         = (lfo1_internal_depth > 0);
316              else {                  break;
317                  cvalue = pDimRgn->VCFCutoff;              case ::gig::lfo1_ctrl_modwheel:
318              }                  lfo1_internal_depth  = 0;
319              cutoff *= float(cvalue) * 0.00787402f; // (1 / 127)                  pLFO1->ExtController = 1; // MIDI controller 1
320              if (cutoff > 1.0) cutoff = 1.0;                  bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
321              cutoff = (cutoff < 0.5 ? cutoff * 4826 - 1 : cutoff * 5715 - 449);                  break;
322              if (cutoff < 1.0) cutoff = 1.0;              case ::gig::lfo1_ctrl_breath:
323                    lfo1_internal_depth  = 0;
324              // calculate resonance                  pLFO1->ExtController = 2; // MIDI controller 2
325              float resonance = (float) (VCFResonanceCtrl.controller ? VCFResonanceCtrl.value : pDimRgn->VCFResonance) * 0.00787f; // 0.0..1.0                  bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
326                    break;
327              VCFCutoffCtrl.fvalue    = cutoff - 1.0;              case ::gig::lfo1_ctrl_internal_modwheel:
328              VCFResonanceCtrl.fvalue = resonance;                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
329          }                  pLFO1->ExtController = 1; // MIDI controller 1
330          else {                  bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
331              VCFCutoffCtrl.controller    = 0;                  break;
332              VCFResonanceCtrl.controller = 0;              case ::gig::lfo1_ctrl_internal_breath:
333          }                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
334                    pLFO1->ExtController = 2; // MIDI controller 2
335          return 0; // success                  bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
336      }                  break;
337                default:
338      /**                  lfo1_internal_depth  = 0;
339       *  Renders the audio data for this voice for the current audio fragment.                  pLFO1->ExtController = 0; // no external controller
340       *  The sample input data can either come from RAM (cached sample or sample                  bLFO1Enabled         = false;
341       *  part) or directly from disk. The output signal will be rendered by          }
342       *  resampling / interpolation. If this voice is a disk streaming voice and          if (bLFO1Enabled) {
343       *  the voice completely played back the cached RAM part of the sample, it              pLFO1->trigger(fromGigLfoWave(pRegion->LFO1WaveForm),
344       *  will automatically switch to disk playback for the next RenderAudio()                             pRegion->LFO1Frequency,
345       *  call.                             pRegion->LFO1Phase,
346       *                             LFO::start_level_mid, // see https://sourceforge.net/p/linuxsampler/mailman/linuxsampler-devel/thread/2189307.cNP0Xbctxq%40silver/#msg36774029
347       *  @param Samples - number of samples to be rendered in this audio fragment cycle                             lfo1_internal_depth,
348       */                             pRegion->LFO1ControlDepth,
349      void Voice::Render(uint Samples) {                             pRegion->LFO1FlipPhase,
350                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
351          // select default values for synthesis mode bits              pLFO1->updateByMIDICtrlValue(pLFO1->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO1->ExtController] : 0);
352          SYNTHESIS_MODE_SET_LOOP(SynthesisMode, false);              pLFO1->setScriptDepthFactor(
353                    pNote->Override.AmpLFODepth.Value,
354          switch (this->PlaybackState) {                  pNote->Override.AmpLFODepth.Final
355                );
356              case playback_state_init:              if (pNote->Override.AmpLFOFreq.isFinal())
357                  this->PlaybackState = playback_state_ram; // we always start playback from RAM cache and switch then to disk if needed                  pLFO1->setScriptFrequencyFinal(
358                  // no break - continue with playback_state_ram                      pNote->Override.AmpLFOFreq.Value, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE
359                    );
360              case playback_state_ram: {              else
361                      if (RAMLoop) SYNTHESIS_MODE_SET_LOOP(SynthesisMode, true); // enable looping                  pLFO1->setScriptFrequencyFactor(
362                        pNote->Override.AmpLFOFreq.Value, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE
363                      // 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);  
             }  
364          }          }
365      }      }
366    
367      /**      void Voice::InitLFO2() {
368       * Process given list of MIDI control change and pitch bend events for          uint16_t lfo2_internal_depth;
369       * the given time.          switch (pRegion->LFO2Controller) {
370       *              case ::gig::lfo2_ctrl_internal:
371       * @param itEvent - iterator pointing to the next event to be processed                  lfo2_internal_depth  = pRegion->LFO2InternalDepth;
372       * @param End     - youngest time stamp where processing should be stopped                  pLFO2->ExtController = 0; // no external controller
373       */                  bLFO2Enabled         = (lfo2_internal_depth > 0);
374      void Voice::processCCEvents(RTList<Event>::Iterator& itEvent, uint End) {                  break;
375          for (; itEvent && itEvent->FragmentPos() <= End; ++itEvent) {              case ::gig::lfo2_ctrl_modwheel:
376              if (itEvent->Type == Event::type_control_change &&                  lfo2_internal_depth  = 0;
377                  itEvent->Param.CC.Controller) { // if (valid) MIDI control change event                  pLFO2->ExtController = 1; // MIDI controller 1
378                  if (itEvent->Param.CC.Controller == VCFCutoffCtrl.controller) {                  bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
379                      processCutoffEvent(itEvent);                  break;
380                  }              case ::gig::lfo2_ctrl_foot:
381                  if (itEvent->Param.CC.Controller == VCFResonanceCtrl.controller) {                  lfo2_internal_depth  = 0;
382                      processResonanceEvent(itEvent);                  pLFO2->ExtController = 4; // MIDI controller 4
383                  }                  bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
384                  if (itEvent->Param.CC.Controller == pLFO1->ExtController) {                  break;
385                      pLFO1->update(itEvent->Param.CC.Value);              case ::gig::lfo2_ctrl_internal_modwheel:
386                  }                  lfo2_internal_depth  = pRegion->LFO2InternalDepth;
387                  if (itEvent->Param.CC.Controller == pLFO2->ExtController) {                  pLFO2->ExtController = 1; // MIDI controller 1
388                      pLFO2->update(itEvent->Param.CC.Value);                  bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
389                  }                  break;
390                  if (itEvent->Param.CC.Controller == pLFO3->ExtController) {              case ::gig::lfo2_ctrl_internal_foot:
391                      pLFO3->update(itEvent->Param.CC.Value);                  lfo2_internal_depth  = pRegion->LFO2InternalDepth;
392                  }                  pLFO2->ExtController = 4; // MIDI controller 4
393                  if (pDimRgn->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&                  bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
394                      itEvent->Param.CC.Controller == pDimRgn->AttenuationController.controller_number) {                  break;
395                      CrossfadeSmoother.update(Engine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.CC.Value)]);              default:
396                  }                  lfo2_internal_depth  = 0;
397                  if (itEvent->Param.CC.Controller == 7) { // volume                  pLFO2->ExtController = 0; // no external controller
398                      VolumeSmoother.update(Engine::VolumeCurve[itEvent->Param.CC.Value] * CONFIG_GLOBAL_ATTENUATION);                  bLFO2Enabled         = false;
399                  } else if (itEvent->Param.CC.Controller == 10) { // panpot          }
400                      PanLeftSmoother.update(Engine::PanCurve[128 - itEvent->Param.CC.Value]);          if (bLFO2Enabled) {
401                      PanRightSmoother.update(Engine::PanCurve[itEvent->Param.CC.Value]);              pLFO2->trigger(fromGigLfoWave(pRegion->LFO2WaveForm),
402                  }                             pRegion->LFO2Frequency,
403              } else if (itEvent->Type == Event::type_pitchbend) { // if pitch bend event                             pRegion->LFO2Phase,
404                  processPitchEvent(itEvent);                             LFO::start_level_mid, // see https://sourceforge.net/p/linuxsampler/mailman/linuxsampler-devel/thread/2189307.cNP0Xbctxq%40silver/#msg36774029
405              }                             lfo2_internal_depth,
406                               pRegion->LFO2ControlDepth,
407                               pRegion->LFO2FlipPhase,
408                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
409                pLFO2->updateByMIDICtrlValue(pLFO2->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO2->ExtController] : 0);
410                pLFO2->setScriptDepthFactor(
411                    pNote->Override.CutoffLFODepth.Value,
412                    pNote->Override.CutoffLFODepth.Final
413                );
414                if (pNote->Override.CutoffLFOFreq.isFinal())
415                    pLFO2->setScriptFrequencyFinal(pNote->Override.CutoffLFOFreq.Value, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
416                else
417                    pLFO2->setScriptFrequencyFactor(pNote->Override.CutoffLFOFreq.Value, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
418          }          }
419      }      }
420    
421      void Voice::processPitchEvent(RTList<Event>::Iterator& itEvent) {      void Voice::InitLFO3() {
422          const float pitch = RTMath::CentsToFreqRatio(((double) itEvent->Param.Pitch.Pitch / 8192.0) * 200.0); // +-two semitones = +-200 cents          uint16_t lfo3_internal_depth;
423          finalSynthesisParameters.fFinalPitch *= pitch;          switch (pRegion->LFO3Controller) {
424          PitchBend = pitch;              case ::gig::lfo3_ctrl_internal:
425      }                  lfo3_internal_depth  = pRegion->LFO3InternalDepth;
426                    pLFO3->ExtController = 0; // no external controller
427      void Voice::processCutoffEvent(RTList<Event>::Iterator& itEvent) {                  bLFO3Enabled         = (lfo3_internal_depth > 0);
428          int ccvalue = itEvent->Param.CC.Value;                  break;
429          if (VCFCutoffCtrl.value == ccvalue) return;              case ::gig::lfo3_ctrl_modwheel:
430          VCFCutoffCtrl.value == ccvalue;                  lfo3_internal_depth  = 0;
431          if (pDimRgn->VCFCutoffControllerInvert)  ccvalue = 127 - ccvalue;                  pLFO3->ExtController = 1; // MIDI controller 1
432          if (ccvalue < pDimRgn->VCFVelocityScale) ccvalue = pDimRgn->VCFVelocityScale;                  bLFO3Enabled         = (pRegion->LFO3ControlDepth > 0);
433          float cutoff = CutoffBase * float(ccvalue) * 0.00787402f; // (1 / 127)                  break;
434          if (cutoff > 1.0) cutoff = 1.0;              case ::gig::lfo3_ctrl_aftertouch:
435          cutoff = (cutoff < 0.5 ? cutoff * 4826 - 1 : cutoff * 5715 - 449);                  lfo3_internal_depth  = 0;
436          if (cutoff < 1.0) cutoff = 1.0;                  pLFO3->ExtController = CTRL_TABLE_IDX_AFTERTOUCH;
437                    bLFO3Enabled         = true;
438          VCFCutoffCtrl.fvalue = cutoff - 1.0; // needed for initialization of fFinalCutoff next time                  break;
439          fFinalCutoff = cutoff;              case ::gig::lfo3_ctrl_internal_modwheel:
440      }                  lfo3_internal_depth  = pRegion->LFO3InternalDepth;
441                    pLFO3->ExtController = 1; // MIDI controller 1
442      void Voice::processResonanceEvent(RTList<Event>::Iterator& itEvent) {                  bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
443          // convert absolute controller value to differential                  break;
444          const int ctrldelta = itEvent->Param.CC.Value - VCFResonanceCtrl.value;              case ::gig::lfo3_ctrl_internal_aftertouch:
445          VCFResonanceCtrl.value = itEvent->Param.CC.Value;                  lfo3_internal_depth  = pRegion->LFO3InternalDepth;
446          const float resonancedelta = (float) ctrldelta * 0.00787f; // 0.0..1.0                  pLFO3->ExtController = CTRL_TABLE_IDX_AFTERTOUCH;
447          fFinalResonance += resonancedelta;                  bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
448          // needed for initialization of parameter                  break;
449          VCFResonanceCtrl.fvalue = itEvent->Param.CC.Value * 0.00787f;              default:
450      }                  lfo3_internal_depth  = 0;
451                    pLFO3->ExtController = 0; // no external controller
452      /**                  bLFO3Enabled         = false;
453       *  Synthesizes the current audio fragment for this voice.          }
454       *          if (bLFO3Enabled) {
455       *  @param Samples - number of sample points to be rendered in this audio              pLFO3->trigger(fromGigLfoWave(pRegion->LFO3WaveForm),
456       *                   fragment cycle                             pRegion->LFO3Frequency,
457       *  @param pSrc    - pointer to input sample data                             pRegion->LFO3Phase,
458       *  @param Skip    - number of sample points to skip in output buffer                             LFO::start_level_max, // see https://sourceforge.net/p/linuxsampler/mailman/linuxsampler-devel/thread/2189307.cNP0Xbctxq%40silver/#msg36774029
459       */                             lfo3_internal_depth,
460      void Voice::Synthesize(uint Samples, sample_t* pSrc, uint Skip) {                             pRegion->LFO3ControlDepth,
461          finalSynthesisParameters.pOutLeft  = &pEngineChannel->pOutputLeft[Skip];                             pRegion->LFO3FlipPhase,
462          finalSynthesisParameters.pOutRight = &pEngineChannel->pOutputRight[Skip];                             pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
463          finalSynthesisParameters.pSrc      = pSrc;              pLFO3->updateByMIDICtrlValue(pLFO3->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO3->ExtController] : 0);
464                pLFO3->setScriptDepthFactor(
465          RTList<Event>::Iterator itCCEvent = pEngineChannel->pEvents->first();                  pNote->Override.PitchLFODepth.Value,
466          RTList<Event>::Iterator itNoteEvent = pEngineChannel->pMIDIKeyInfo[MIDIKey].pEvents->first();                  pNote->Override.PitchLFODepth.Final
467                );
468          if (Skip) { // skip events that happened before this voice was triggered              if (pNote->Override.PitchLFOFreq.isFinal())
469              while (itCCEvent && itCCEvent->FragmentPos() <= Skip) ++itCCEvent;                  pLFO3->setScriptFrequencyFinal(pNote->Override.PitchLFOFreq.Value, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
470              while (itNoteEvent && itNoteEvent->FragmentPos() <= Skip) ++itNoteEvent;              else
471          }                  pLFO3->setScriptFrequencyFactor(pNote->Override.PitchLFOFreq.Value, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
472            }
473          uint killPos;      }
474          if (itKillEvent) killPos = RTMath::Min(itKillEvent->FragmentPos(), pEngine->MaxFadeOutPos);  
475        float Voice::CalculateCutoffBase(uint8_t MIDIKeyVelocity) {
476          uint i = Skip;          float cutoff = pRegion->GetVelocityCutoff(MIDIKeyVelocity);
477          while (i < Samples) {          if (pRegion->VCFKeyboardTracking) {
478              int iSubFragmentEnd = RTMath::Min(i + CONFIG_DEFAULT_SUBFRAGMENT_SIZE, Samples);              cutoff *= RTMath::CentsToFreqRatioUnlimited((MIDIKey() - pRegion->VCFKeyboardTrackingBreakpoint) * 100);
479            }
480              // initialize all final synthesis parameters          return cutoff;
481              finalSynthesisParameters.fFinalPitch = PitchBase * PitchBend;      }
482              fFinalCutoff    = VCFCutoffCtrl.fvalue;  
483              fFinalResonance = VCFResonanceCtrl.fvalue;      // This is just called when the voice is triggered. On any subsequent cutoff
484        // controller changes ProcessCutoffEvent() is called instead.
485              // process MIDI control change and pitchbend events for this subfragment      float Voice::CalculateFinalCutoff(float cutoffBase) {
486              processCCEvents(itCCEvent, iSubFragmentEnd);          // if the selected filter type is an official GigaStudio filter type
487            // then we preserve the original (no matter how odd) historical GSt
488              float fFinalVolume = VolumeSmoother.render() * CrossfadeSmoother.render();          // behaviour identically; for our own filter types though we deviate to
489  #ifdef CONFIG_PROCESS_MUTED_CHANNELS          // more meaningful behaviours where appropriate
490              if (pEngineChannel->GetMute()) fFinalVolume = 0;          const bool isGStFilter = isGStFilterType(pRegion->VCFType);
491  #endif  
492            // get current cutoff CC or velocity value (always 0..127)
493              // process transition events (note on, note off & sustain pedal)          float cvalue;
494              processTransitionEvents(itNoteEvent, iSubFragmentEnd);          if (VCFCutoffCtrl.controller) {
495                cvalue = GetGigEngineChannel()->ControllerTable[VCFCutoffCtrl.controller];
496              // if the voice was killed in this subfragment switch EG1 to fade out stage              if (pRegion->VCFCutoffControllerInvert) cvalue = 127 - cvalue;
497              if (itKillEvent && killPos <= iSubFragmentEnd) {              if (isGStFilter) {
498                  EG1.enterFadeOutStage();                  // VCFVelocityScale in this case means "minimum cutoff" for GSt
499                  itKillEvent = Pool<Event>::Iterator();                  if (cvalue < MinCutoff()) cvalue = MinCutoff();
500              }              } else {
501                    // for our own filter types we interpret "minimum cutoff"
502              // process envelope generators                  // differently: GSt handles this as a simple hard limit with the
503              switch (EG1.getSegmentType()) {                  // consequence that a certain range of the controller is simply
504                  case EGADSR::segment_lin:                  // dead; so for our filter types we rather remap that to
505                      fFinalVolume *= EG1.processLin();                  // restrain within the min_cutoff..127 range as well, but
506                      break;                  // effectively spanned over the entire controller range (0..127)
507                  case EGADSR::segment_exp:                  // to avoid such a "dead" lower controller zone
508                      fFinalVolume *= EG1.processExp();                  cvalue = MinCutoff() + (cvalue / 127.f) * float(127 - MinCutoff());
509                      break;              }
510                  case EGADSR::segment_end:          } else {
511                      fFinalVolume *= EG1.getLevel();              // in case of velocity, VCFVelocityScale parameter is already
512                      break; // noop              // handled on libgig side (so by calling
513              }              // pRegion->GetVelocityCutoff(velo) in CalculateCutoffBase() above)
514              switch (EG2.getSegmentType()) {              cvalue = pRegion->VCFCutoff;
515                  case EGADSR::segment_lin:          }
516                      fFinalCutoff *= EG2.processLin();  
517                      break;          float fco = cutoffBase * cvalue;
518                  case EGADSR::segment_exp:          if (fco > 127.0f) fco = 127.0f;
519                      fFinalCutoff *= EG2.processExp();  
520                      break;          // the filter implementations of the original GSt filter types take an
521                  case EGADSR::segment_end:          // abstract cutoff parameter range of 0..127, ...
522                      fFinalCutoff *= EG2.getLevel();          if (isGStFilter)
523                      break; // noop              return fco;
524              }  
525              if (EG3.active()) finalSynthesisParameters.fFinalPitch *= EG3.render();          // ... whereas our own filter types take a cutoff parameter in Hz, so
526            // remap here 0 .. 127 [lin] -> 21 Hz .. 18 kHz [x^4] (center @2.2 kHz)
527              // process low frequency oscillators          fco = (fco + 29.f) / (127.f + 29.f);
528              if (bLFO1Enabled) fFinalVolume *= pLFO1->render();          fco = fco * fco * fco * fco * 18000.f;
529              if (bLFO2Enabled) fFinalCutoff *= pLFO2->render();          if (fco > 0.49f * pEngine->SampleRate)
530              if (bLFO3Enabled) finalSynthesisParameters.fFinalPitch *= RTMath::CentsToFreqRatio(pLFO3->render());              fco = 0.49f * pEngine->SampleRate;
531            return fco;
532              // if filter enabled then update filter coefficients      }
533              if (SYNTHESIS_MODE_GET_FILTER(SynthesisMode)) {  
534                  finalSynthesisParameters.filterLeft.SetParameters(fFinalCutoff + 1.0, fFinalResonance, pEngine->SampleRate);      uint8_t Voice::GetVCFCutoffCtrl() {
535                  finalSynthesisParameters.filterRight.SetParameters(fFinalCutoff + 1.0, fFinalResonance, pEngine->SampleRate);          uint8_t ctrl;
536              }          switch (pRegion->VCFCutoffController) {
537                case ::gig::vcf_cutoff_ctrl_modwheel:
538              // do we need resampling?                  ctrl = 1;
539              const float __PLUS_ONE_CENT  = 1.000577789506554859250142541782224725466f;                  break;
540              const float __MINUS_ONE_CENT = 0.9994225441413807496009516495583113737666f;              case ::gig::vcf_cutoff_ctrl_effect1:
541              const bool bResamplingRequired = !(finalSynthesisParameters.fFinalPitch <= __PLUS_ONE_CENT &&                  ctrl = 12;
542                                                 finalSynthesisParameters.fFinalPitch >= __MINUS_ONE_CENT);                  break;
543              SYNTHESIS_MODE_SET_INTERPOLATE(SynthesisMode, bResamplingRequired);              case ::gig::vcf_cutoff_ctrl_effect2:
544                    ctrl = 13;
545              // prepare final synthesis parameters structure                  break;
546              finalSynthesisParameters.uiToGo            = iSubFragmentEnd - i;              case ::gig::vcf_cutoff_ctrl_breath:
547  #ifdef CONFIG_INTERPOLATE_VOLUME                  ctrl = 2;
548              finalSynthesisParameters.fFinalVolumeDeltaLeft  =                  break;
549                  (fFinalVolume * VolumeLeft  * PanLeftSmoother.render() -              case ::gig::vcf_cutoff_ctrl_foot:
550                   finalSynthesisParameters.fFinalVolumeLeft) / finalSynthesisParameters.uiToGo;                  ctrl = 4;
551              finalSynthesisParameters.fFinalVolumeDeltaRight =                  break;
552                  (fFinalVolume * VolumeRight * PanRightSmoother.render() -              case ::gig::vcf_cutoff_ctrl_sustainpedal:
553                   finalSynthesisParameters.fFinalVolumeRight) / finalSynthesisParameters.uiToGo;                  ctrl = 64;
554  #else                  break;
555              finalSynthesisParameters.fFinalVolumeLeft  =              case ::gig::vcf_cutoff_ctrl_softpedal:
556                  fFinalVolume * VolumeLeft  * PanLeftSmoother.render();                  ctrl = 67;
557              finalSynthesisParameters.fFinalVolumeRight =                  break;
558                  fFinalVolume * VolumeRight * PanRightSmoother.render();              case ::gig::vcf_cutoff_ctrl_genpurpose7:
559  #endif                  ctrl = 82;
560              // render audio for one subfragment                  break;
561              RunSynthesisFunction(SynthesisMode, &finalSynthesisParameters, &loop);              case ::gig::vcf_cutoff_ctrl_genpurpose8:
562                    ctrl = 83;
563              // stop the rendering if volume EG is finished                  break;
564              if (EG1.getSegmentType() == EGADSR::segment_end) break;              case ::gig::vcf_cutoff_ctrl_aftertouch:
565                    ctrl = CTRL_TABLE_IDX_AFTERTOUCH;
566              const double newPos = Pos + (iSubFragmentEnd - i) * finalSynthesisParameters.fFinalPitch;                  break;
567                case ::gig::vcf_cutoff_ctrl_none:
568              // increment envelopes' positions              default:
569              if (EG1.active()) {                  ctrl = 0;
570                    break;
571                  // 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);  
                 }  
572    
573                  EG1.increment(1);          return ctrl;
574                  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  
575    
576              Pos = newPos;      uint8_t Voice::GetVCFResonanceCtrl() {
577              i = iSubFragmentEnd;          uint8_t ctrl;
578            switch (pRegion->VCFResonanceController) {
579                case ::gig::vcf_res_ctrl_genpurpose3:
580                    ctrl = 18;
581                    break;
582                case ::gig::vcf_res_ctrl_genpurpose4:
583                    ctrl = 19;
584                    break;
585                case ::gig::vcf_res_ctrl_genpurpose5:
586                    ctrl = 80;
587                    break;
588                case ::gig::vcf_res_ctrl_genpurpose6:
589                    ctrl = 81;
590                    break;
591                case ::gig::vcf_res_ctrl_none:
592                default:
593                    ctrl = 0;
594          }          }
     }  
595    
596      /** @brief Update current portamento position.          return ctrl;
597       *      }
      * 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  
598    
599          if (itTriggerEvent && itKillEvent->FragmentPos() <= itTriggerEvent->FragmentPos()) return;      void Voice::TriggerEG1(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
600          this->itKillEvent = itKillEvent;          EG1.setStateOptions(
601                pRegion->EG1Options.AttackCancel,
602                pRegion->EG1Options.AttackHoldCancel,
603                pRegion->EG1Options.Decay1Cancel,
604                pRegion->EG1Options.Decay2Cancel,
605                pRegion->EG1Options.ReleaseCancel
606            );
607            EG1.trigger(pRegion->EG1PreAttack,
608                        (pNote && pNote->Override.Attack.isFinal()) ?
609                            pNote->Override.Attack.Value :
610                            RTMath::Max(pRegion->EG1Attack, 0.0316) * egInfo.Attack,
611                        pRegion->EG1Hold,
612                        (pNote && pNote->Override.Decay.isFinal()) ?
613                            pNote->Override.Decay.Value :
614                            pRegion->EG1Decay1 * egInfo.Decay * velrelease,
615                        (pNote && pNote->Override.Decay.isFinal()) ?
616                            pNote->Override.Decay.Value :
617                            pRegion->EG1Decay2 * egInfo.Decay * velrelease,
618                        pRegion->EG1InfiniteSustain,
619                        (pNote && pNote->Override.Sustain.Final) ?
620                            uint(pNote->Override.Sustain.Value * 1000.f) :
621                            pRegion->EG1Sustain * (pNote ? pNote->Override.Sustain.Value : 1.f),
622                        (pNote && pNote->Override.Release.isFinal()) ?
623                            pNote->Override.Release.Value :
624                            RTMath::Max(pRegion->EG1Release * velrelease, 0.014) * egInfo.Release,
625                        velocityAttenuation,
626                        sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
627        }
628    
629        void Voice::TriggerEG2(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
630            EG2.setStateOptions(
631                pRegion->EG2Options.AttackCancel,
632                pRegion->EG2Options.AttackHoldCancel,
633                pRegion->EG2Options.Decay1Cancel,
634                pRegion->EG2Options.Decay2Cancel,
635                pRegion->EG2Options.ReleaseCancel
636            );
637            EG2.trigger(uint(RgnInfo.EG2PreAttack),
638                        (pNote && pNote->Override.CutoffAttack.isFinal()) ?
639                            pNote->Override.CutoffAttack.Value :
640                            RgnInfo.EG2Attack * egInfo.Attack,
641                        false,
642                        (pNote && pNote->Override.CutoffDecay.isFinal()) ?
643                            pNote->Override.CutoffDecay.Value :
644                            RgnInfo.EG2Decay1 * egInfo.Decay * velrelease,
645                        (pNote && pNote->Override.CutoffDecay.isFinal()) ?
646                            pNote->Override.CutoffDecay.Value :
647                            RgnInfo.EG2Decay2 * egInfo.Decay * velrelease,
648                        RgnInfo.EG2InfiniteSustain,
649                        (pNote && pNote->Override.CutoffSustain.Final) ?
650                            uint(pNote->Override.CutoffSustain.Value * 1000.f) :
651                            uint(RgnInfo.EG2Sustain),
652                        (pNote && pNote->Override.CutoffRelease.isFinal()) ?
653                            pNote->Override.CutoffRelease.Value :
654                            RgnInfo.EG2Release * egInfo.Release * velrelease,
655                        velocityAttenuation,
656                        sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
657        }
658    
659        void Voice::ProcessGroupEvent(RTList<Event>::Iterator& itEvent) {
660            dmsg(4,("Voice %p processGroupEvents event type=%d", (void*)this, itEvent->Type));
661    
662            // TODO: The SustainPedal condition could be wrong, maybe the
663            // check should be if this Voice is in release stage or is a
664            // release sample instead. Need to test this in GSt.
665            // -- Andreas
666            //
667            // Commented sustain pedal check out. I don't think voices of the same
668            // note should be stopped at all, because it doesn't sound naturally
669            // with a drumkit.
670            // -- Christian, 2013-01-08
671            if (itEvent->Param.Note.Key != HostKey() /*||
672                !GetGigEngineChannel()->SustainPedal*/) {
673                dmsg(4,("Voice %p - kill", (void*)this));
674    
675                // kill the voice fast
676                pEG1->enterFadeOutStage();
677            }
678        }
679    
680        void Voice::CalculateFadeOutCoeff(float FadeOutTime, float SampleRate) {
681            EG1.CalculateFadeOutCoeff(FadeOutTime, SampleRate);
682        }
683    
684        int Voice::CalculatePan(uint8_t pan) {
685            int p;
686            // Gst behaviour: -64 and 63 are special cases
687            if (RgnInfo.Pan == -64)     p = pan * 2 - 127;
688            else if (RgnInfo.Pan == 63) p = pan * 2;
689            else                        p = pan + RgnInfo.Pan;
690    
691            if (p < 0) return 0;
692            if (p > 127) return 127;
693            return p;
694        }
695    
696        release_trigger_t Voice::GetReleaseTriggerFlags() {
697            release_trigger_t flags =
698                (pRegion->NoNoteOffReleaseTrigger) ?
699                    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
700            switch (pRegion->SustainReleaseTrigger) {
701                case ::gig::sust_rel_trg_none:
702                    break;
703                case ::gig::sust_rel_trg_maxvelocity:
704                    flags |= release_trigger_sustain_maxvelocity;
705                    break;
706                case ::gig::sust_rel_trg_keyvelocity:
707                    flags |= release_trigger_sustain_keyvelocity;
708                    break;
709            }
710            return flags;
711      }      }
712    
713  }} // namespace LinuxSampler::gig  }} // namespace LinuxSampler::gig
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