/[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 2175 by persson, Mon Apr 25 08:12:36 2011 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 - 2011 Christian Schoenebeck and Grigor Iliev      *
8   *                                                                         *   *                                                                         *
9   *   This program is free software; you can redistribute it and/or modify  *   *   This program is free software; you can redistribute it and/or modify  *
10   *   it under the terms of the GNU General Public License as published by  *   *   it under the terms of the GNU General Public License as published by  *
# Line 24  Line 25 
25  #include "../../common/Features.h"  #include "../../common/Features.h"
26  #include "Synthesizer.h"  #include "Synthesizer.h"
27  #include "Profiler.h"  #include "Profiler.h"
28    #include "Engine.h"
29    #include "EngineChannel.h"
30    
31  #include "Voice.h"  #include "Voice.h"
32    
33  namespace LinuxSampler { namespace gig {  namespace LinuxSampler { namespace gig {
34    
35      const float Voice::FILTER_CUTOFF_COEFF(CalculateFilterCutoffCoeff());      Voice::Voice() {
36            pEngine = NULL;
37            pEG1 = &EG1;
38            pEG2 = &EG2;
39        }
40    
41      float Voice::CalculateFilterCutoffCoeff() {      Voice::~Voice() {
         return log(CONFIG_FILTER_CUTOFF_MAX / CONFIG_FILTER_CUTOFF_MIN);  
42      }      }
43    
44      Voice::Voice() {      EngineChannel* Voice::GetGigEngineChannel() {
45          pEngine     = NULL;          return static_cast<EngineChannel*>(pEngineChannel);
46          pDiskThread = NULL;      }
         PlaybackState = playback_state_end;  
         pLFO1 = new LFOUnsigned(1.0f);  // amplitude EG (0..1 range)  
         pLFO2 = new LFOUnsigned(1.0f);  // filter EG (0..1 range)  
         pLFO3 = new LFOSigned(1200.0f); // pitch EG (-1200..+1200 range)  
         KeyGroup = 0;  
         SynthesisMode = 0; // set all mode bits to 0 first  
         // select synthesis implementation (currently either pure C++ or MMX+SSE(1))  
         #if CONFIG_ASM && ARCH_X86  
         SYNTHESIS_MODE_SET_IMPLEMENTATION(SynthesisMode, Features::supportsMMX() && Features::supportsSSE());  
         #else  
         SYNTHESIS_MODE_SET_IMPLEMENTATION(SynthesisMode, false);  
         #endif  
         SYNTHESIS_MODE_SET_PROFILING(SynthesisMode, Profiler::isEnabled());  
47    
48          finalSynthesisParameters.filterLeft.Reset();      void Voice::SetEngine(LinuxSampler::Engine* pEngine) {
49          finalSynthesisParameters.filterRight.Reset();          Engine* engine = static_cast<Engine*>(pEngine);
50            this->pEngine     = engine;
51            this->pDiskThread = engine->pDiskThread;
52            dmsg(6,("Voice::SetEngine()\n"));
53      }      }
54    
55      Voice::~Voice() {      Voice::SampleInfo Voice::GetSampleInfo() {
56          if (pLFO1) delete pLFO1;          SampleInfo si;
57          if (pLFO2) delete pLFO2;          si.SampleRate       = pSample->SamplesPerSecond;
58          if (pLFO3) delete pLFO3;          si.ChannelCount     = pSample->Channels;
59            si.FrameSize        = pSample->FrameSize;
60            si.BitDepth         = pSample->BitDepth;
61            si.TotalFrameCount  = pSample->SamplesTotal;
62    
63            si.HasLoops       = pRegion->SampleLoops;
64            si.LoopStart      = (si.HasLoops) ? pRegion->pSampleLoops[0].LoopStart  : 0;
65            si.LoopLength     = (si.HasLoops) ? pRegion->pSampleLoops[0].LoopLength : 0;
66            si.LoopPlayCount  = pSample->LoopPlayCount;
67            si.Unpitched      = !pRegion->PitchTrack;
68    
69            return si;
70      }      }
71    
72      void Voice::SetEngine(Engine* pEngine) {      Voice::RegionInfo Voice::GetRegionInfo() {
73          this->pEngine     = pEngine;          RegionInfo ri;
74          this->pDiskThread = pEngine->pDiskThread;          ri.UnityNote = pRegion->UnityNote;
75          dmsg(6,("Voice::SetEngine()\n"));          ri.FineTune  = pRegion->FineTune;
76            ri.Pan       = pRegion->Pan;
77            ri.SampleStartOffset = pRegion->SampleStartOffset;
78    
79            ri.EG1PreAttack        = pRegion->EG1PreAttack;
80            ri.EG1Attack           = pRegion->EG1Attack;
81            ri.EG1Hold             = pRegion->EG1Hold;
82            ri.EG1Decay1           = pRegion->EG1Decay1;
83            ri.EG1Decay2           = pRegion->EG1Decay2;
84            ri.EG1Sustain          = pRegion->EG1Sustain;
85            ri.EG1InfiniteSustain  = pRegion->EG1InfiniteSustain;
86            ri.EG1Release          = pRegion->EG1Release;
87    
88            ri.EG2PreAttack        = pRegion->EG2PreAttack;
89            ri.EG2Attack           = pRegion->EG2Attack;
90            ri.EG2Decay1           = pRegion->EG2Decay1;
91            ri.EG2Decay2           = pRegion->EG2Decay2;
92            ri.EG2Sustain          = pRegion->EG2Sustain;
93            ri.EG2InfiniteSustain  = pRegion->EG2InfiniteSustain;
94            ri.EG2Release          = pRegion->EG2Release;
95    
96            ri.EG3Attack     = pRegion->EG3Attack;
97            ri.EG3Depth      = pRegion->EG3Depth;
98            ri.VCFEnabled    = pRegion->VCFEnabled;
99            ri.VCFType       = Filter::vcf_type_t(pRegion->VCFType);
100            ri.VCFResonance  = pRegion->VCFResonance;
101    
102            ri.ReleaseTriggerDecay = 0.01053 * (256 >> pRegion->ReleaseTriggerDecay);
103    
104            return ri;
105        }
106    
107        Voice::InstrumentInfo Voice::GetInstrumentInfo() {
108            InstrumentInfo ii;
109            ii.FineTune = GetGigEngineChannel()->pInstrument->FineTune;
110            ii.PitchbendRange = GetGigEngineChannel()->pInstrument->PitchbendRange;
111    
112            return ii;
113        }
114    
115        double Voice::GetSampleAttenuation() {
116            return pRegion->SampleAttenuation;
117        }
118    
119        double Voice::GetVelocityAttenuation(uint8_t MIDIKeyVelocity) {
120            return pRegion->GetVelocityAttenuation(MIDIKeyVelocity);
121        }
122    
123        double Voice::GetVelocityRelease(uint8_t MIDIKeyVelocity) {
124            return pRegion->GetVelocityRelease(MIDIKeyVelocity);
125      }      }
126    
127      /**      void Voice::ProcessCCEvent(RTList<Event>::Iterator& itEvent) {
128       *  Initializes and triggers the voice, a disk stream will be launched if          if (itEvent->Type == Event::type_control_change && itEvent->Param.CC.Controller) { // if (valid) MIDI control change event
129       *  needed.              if (pRegion->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&
130       *                  itEvent->Param.CC.Controller == pRegion->AttenuationController.controller_number) {
131       *  @param pEngineChannel - engine channel on which this voice was ordered                  CrossfadeSmoother.update(AbstractEngine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.CC.Value)]);
132       *  @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);  
   
         float volume = velocityAttenuation / 32768.0f; // we downscale by 32768 to convert from int16 value range to DSP value range (which is -1.0..1.0)  
   
         volume *= pDimRgn->SampleAttenuation;  
   
         // the volume of release triggered samples depends on note length  
         if (Type == type_release_trigger) {  
             float noteLength = float(pEngine->FrameTime + Delay -  
                                      pEngineChannel->pMIDIKeyInfo[MIDIKey].NoteOnTime) / pEngine->SampleRate;  
             float attenuation = 1 - 0.01053 * (256 >> pDimRgn->ReleaseTriggerDecay) * noteLength;  
             if (attenuation <= 0) return -1;  
             volume *= attenuation;  
133          }          }
134        }
135    
136        void Voice::ProcessCutoffEvent(RTList<Event>::Iterator& itEvent) {
137            int ccvalue = itEvent->Param.CC.Value;
138            if (VCFCutoffCtrl.value == ccvalue) return;
139            VCFCutoffCtrl.value = ccvalue;
140            if (pRegion->VCFCutoffControllerInvert)  ccvalue = 127 - ccvalue;
141            if (ccvalue < pRegion->VCFVelocityScale) ccvalue = pRegion->VCFVelocityScale;
142            float cutoff = CutoffBase * float(ccvalue);
143            if (cutoff > 127.0f) cutoff = 127.0f;
144    
145          // select channel mode (mono or stereo)          VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of fFinalCutoff next time
146          SYNTHESIS_MODE_SET_CHANNELS(SynthesisMode, pSample->Channels == 2);          fFinalCutoff = cutoff;
147        }
148    
149          // get starting crossfade volume level      double Voice::CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity) {
150          float crossfadeVolume;          float crossfadeVolume;
151          switch (pDimRgn->AttenuationController.type) {          switch (pRegion->AttenuationController.type) {
152              case ::gig::attenuation_ctrl_t::type_channelaftertouch:              case ::gig::attenuation_ctrl_t::type_channelaftertouch:
153                  crossfadeVolume = 1.0f; //TODO: aftertouch not supported yet                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[128])];
154                  break;                  break;
155              case ::gig::attenuation_ctrl_t::type_velocity:              case ::gig::attenuation_ctrl_t::type_velocity:
156                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(itNoteOnEvent->Param.Note.Velocity)];                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(MIDIKeyVelocity)];
157                  break;                  break;
158              case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate              case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate
159                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(pEngineChannel->ControllerTable[pDimRgn->AttenuationController.controller_number])];                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[pRegion->AttenuationController.controller_number])];
160                  break;                  break;
161              case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined              case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined
162              default:              default:
163                  crossfadeVolume = 1.0f;                  crossfadeVolume = 1.0f;
164          }          }
165    
166          VolumeLeft  = volume * Engine::PanCurve[64 - pDimRgn->Pan];          return crossfadeVolume;
167          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;  
168    
169              // calculate influence of EG2 controller on EG2's parameters      double Voice::GetEG1ControllerValue(uint8_t MIDIKeyVelocity) {
170              double eg2attack  = (pDimRgn->EG2ControllerAttackInfluence)  ? 1 + 0.00775 * (double) (1 << pDimRgn->EG2ControllerAttackInfluence)  * eg2controllervalue : 1.0;          double eg1controllervalue = 0;
171              double eg2decay   = (pDimRgn->EG2ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pDimRgn->EG2ControllerDecayInfluence)   * eg2controllervalue : 1.0;          switch (pRegion->EG1Controller.type) {
172              double eg2release = (pDimRgn->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pDimRgn->EG2ControllerReleaseInfluence) * eg2controllervalue : 1.0;              case ::gig::eg1_ctrl_t::type_none: // no controller defined
173                    eg1controllervalue = 0;
174              EG2.trigger(pDimRgn->EG2PreAttack,                  break;
175                          pDimRgn->EG2Attack * eg2attack,              case ::gig::eg1_ctrl_t::type_channelaftertouch:
176                          false,                  eg1controllervalue = GetGigEngineChannel()->ControllerTable[128];
177                          pDimRgn->EG2Decay1 * eg2decay * velrelease,                  break;
178                          pDimRgn->EG2Decay2 * eg2decay * velrelease,              case ::gig::eg1_ctrl_t::type_velocity:
179                          pDimRgn->EG2InfiniteSustain,                  eg1controllervalue = MIDIKeyVelocity;
180                          pDimRgn->EG2Sustain,                  break;
181                          pDimRgn->EG2Release * eg2release * velrelease,              case ::gig::eg1_ctrl_t::type_controlchange: // MIDI control change controller
182                          velocityAttenuation,                  eg1controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG1Controller.controller_number];
183                          pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);                  break;
         }  
   
   
         // 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);  
             }  
184          }          }
185            if (pRegion->EG1ControllerInvert) eg1controllervalue = 127 - eg1controllervalue;
186    
187            return eg1controllervalue;
188        }
189    
190          // setup LFO 2 (VCF Cutoff LFO)      Voice::EGInfo Voice::CalculateEG1ControllerInfluence(double eg1ControllerValue) {
191          {          EGInfo eg;
192              uint16_t lfo2_internal_depth;          // (eg1attack is different from the others)
193              switch (pDimRgn->LFO2Controller) {          eg.Attack  = (pRegion->EG1ControllerAttackInfluence)  ?
194                  case ::gig::lfo2_ctrl_internal:              1 + 0.031 * (double) (pRegion->EG1ControllerAttackInfluence == 1 ?
195                      lfo2_internal_depth  = pDimRgn->LFO2InternalDepth;                                    1 : 1 << pRegion->EG1ControllerAttackInfluence) * eg1ControllerValue : 1.0;
196                      pLFO2->ExtController = 0; // no external controller          eg.Decay   = (pRegion->EG1ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerDecayInfluence)   * eg1ControllerValue : 1.0;
197                      bLFO2Enabled         = (lfo2_internal_depth > 0);          eg.Release = (pRegion->EG1ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerReleaseInfluence) * eg1ControllerValue : 1.0;
                     break;  
                 case ::gig::lfo2_ctrl_modwheel:  
                     lfo2_internal_depth  = 0;  
                     pLFO2->ExtController = 1; // MIDI controller 1  
                     bLFO2Enabled         = (pDimRgn->LFO2ControlDepth > 0);  
                     break;  
                 case ::gig::lfo2_ctrl_foot:  
                     lfo2_internal_depth  = 0;  
                     pLFO2->ExtController = 4; // MIDI controller 4  
                     bLFO2Enabled         = (pDimRgn->LFO2ControlDepth > 0);  
                     break;  
                 case ::gig::lfo2_ctrl_internal_modwheel:  
                     lfo2_internal_depth  = pDimRgn->LFO2InternalDepth;  
                     pLFO2->ExtController = 1; // MIDI controller 1  
                     bLFO2Enabled         = (lfo2_internal_depth > 0 || pDimRgn->LFO2ControlDepth > 0);  
                     break;  
                 case ::gig::lfo2_ctrl_internal_foot:  
                     lfo2_internal_depth  = pDimRgn->LFO2InternalDepth;  
                     pLFO2->ExtController = 4; // MIDI controller 4  
                     bLFO2Enabled         = (lfo2_internal_depth > 0 || pDimRgn->LFO2ControlDepth > 0);  
                     break;  
                 default:  
                     lfo2_internal_depth  = 0;  
                     pLFO2->ExtController = 0; // no external controller  
                     bLFO2Enabled         = false;  
             }  
             if (bLFO2Enabled) {  
                 pLFO2->trigger(pDimRgn->LFO2Frequency,  
                                start_level_max,  
                                lfo2_internal_depth,  
                                pDimRgn->LFO2ControlDepth,  
                                pDimRgn->LFO2FlipPhase,  
                                pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
                 pLFO2->update(pLFO2->ExtController ? pEngineChannel->ControllerTable[pLFO2->ExtController] : 0);  
             }  
         }  
198    
199            return eg;
200        }
201    
202          // setup LFO 3 (VCO LFO)      double Voice::GetEG2ControllerValue(uint8_t MIDIKeyVelocity) {
203          {          double eg2controllervalue = 0;
204              uint16_t lfo3_internal_depth;          switch (pRegion->EG2Controller.type) {
205              switch (pDimRgn->LFO3Controller) {              case ::gig::eg2_ctrl_t::type_none: // no controller defined
206                  case ::gig::lfo3_ctrl_internal:                  eg2controllervalue = 0;
207                      lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;                  break;
208                      pLFO3->ExtController = 0; // no external controller              case ::gig::eg2_ctrl_t::type_channelaftertouch:
209                      bLFO3Enabled         = (lfo3_internal_depth > 0);                  eg2controllervalue = GetGigEngineChannel()->ControllerTable[128];
210                      break;                  break;
211                  case ::gig::lfo3_ctrl_modwheel:              case ::gig::eg2_ctrl_t::type_velocity:
212                      lfo3_internal_depth  = 0;                  eg2controllervalue = MIDIKeyVelocity;
213                      pLFO3->ExtController = 1; // MIDI controller 1                  break;
214                      bLFO3Enabled         = (pDimRgn->LFO3ControlDepth > 0);              case ::gig::eg2_ctrl_t::type_controlchange: // MIDI control change controller
215                      break;                  eg2controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG2Controller.controller_number];
216                  case ::gig::lfo3_ctrl_aftertouch:                  break;
                     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);  
                 pLFO3->update(pLFO3->ExtController ? pEngineChannel->ControllerTable[pLFO3->ExtController] : 0);  
             }  
217          }          }
218            if (pRegion->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue;
219    
220            return eg2controllervalue;
221        }
222    
223          #if CONFIG_FORCE_FILTER      Voice::EGInfo Voice::CalculateEG2ControllerInfluence(double eg2ControllerValue) {
224          const bool bUseFilter = true;          EGInfo eg;
225          #else // use filter only if instrument file told so          eg.Attack  = (pRegion->EG2ControllerAttackInfluence)  ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerAttackInfluence)  * eg2ControllerValue : 1.0;
226          const bool bUseFilter = pDimRgn->VCFEnabled;          eg.Decay   = (pRegion->EG2ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerDecayInfluence)   * eg2ControllerValue : 1.0;
227          #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  
   
             #ifndef CONFIG_OVERRIDE_FILTER_TYPE  
             finalSynthesisParameters.filterLeft.SetType(pDimRgn->VCFType);  
             finalSynthesisParameters.filterRight.SetType(pDimRgn->VCFType);  
             #else // override filter type  
             FilterLeft.SetType(CONFIG_OVERRIDE_FILTER_TYPE);  
             FilterRight.SetType(CONFIG_OVERRIDE_FILTER_TYPE);  
             #endif // CONFIG_OVERRIDE_FILTER_TYPE  
   
             VCFCutoffCtrl.value    = pEngineChannel->ControllerTable[VCFCutoffCtrl.controller];  
             VCFResonanceCtrl.value = pEngineChannel->ControllerTable[VCFResonanceCtrl.controller];  
   
             // calculate cutoff frequency  
             float cutoff = pDimRgn->GetVelocityCutoff(itNoteOnEvent->Param.Note.Velocity);  
             if (pDimRgn->VCFKeyboardTracking) {  
                 cutoff *= exp((itNoteOnEvent->Param.Note.Key - pDimRgn->VCFKeyboardTrackingBreakpoint) * 0.057762265f); // (ln(2) / 12)  
             }  
             CutoffBase = cutoff;  
   
             int cvalue;  
             if (VCFCutoffCtrl.controller) {  
                 cvalue = pEngineChannel->ControllerTable[VCFCutoffCtrl.controller];  
                 if (pDimRgn->VCFCutoffControllerInvert) cvalue = 127 - cvalue;  
                 // VCFVelocityScale in this case means Minimum cutoff  
                 if (cvalue < pDimRgn->VCFVelocityScale) cvalue = pDimRgn->VCFVelocityScale;  
             }  
             else {  
                 cvalue = pDimRgn->VCFCutoff;  
             }  
             cutoff *= float(cvalue) * 0.00787402f; // (1 / 127)  
             if (cutoff > 1.0) cutoff = 1.0;  
             cutoff = (cutoff < 0.5 ? cutoff * 4826 - 1 : cutoff * 5715 - 449);  
             if (cutoff < 1.0) cutoff = 1.0;  
   
             // calculate resonance  
             float resonance = (float) (VCFResonanceCtrl.controller ? VCFResonanceCtrl.value : pDimRgn->VCFResonance) * 0.00787f; // 0.0..1.0  
   
             VCFCutoffCtrl.fvalue    = cutoff - 1.0;  
             VCFResonanceCtrl.fvalue = resonance;  
         }  
         else {  
             VCFCutoffCtrl.controller    = 0;  
             VCFResonanceCtrl.controller = 0;  
         }  
228    
229          return 0; // success          return eg;
230      }      }
231    
232      /**      void Voice::InitLFO1() {
233       *  Renders the audio data for this voice for the current audio fragment.          uint16_t lfo1_internal_depth;
234       *  The sample input data can either come from RAM (cached sample or sample          switch (pRegion->LFO1Controller) {
235       *  part) or directly from disk. The output signal will be rendered by              case ::gig::lfo1_ctrl_internal:
236       *  resampling / interpolation. If this voice is a disk streaming voice and                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
237       *  the voice completely played back the cached RAM part of the sample, it                  pLFO1->ExtController = 0; // no external controller
238       *  will automatically switch to disk playback for the next RenderAudio()                  bLFO1Enabled         = (lfo1_internal_depth > 0);
239       *  call.                  break;
240       *              case ::gig::lfo1_ctrl_modwheel:
241       *  @param Samples - number of samples to be rendered in this audio fragment cycle                  lfo1_internal_depth  = 0;
242       */                  pLFO1->ExtController = 1; // MIDI controller 1
243      void Voice::Render(uint Samples) {                  bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
244                    break;
245          // select default values for synthesis mode bits              case ::gig::lfo1_ctrl_breath:
246          SYNTHESIS_MODE_SET_LOOP(SynthesisMode, false);                  lfo1_internal_depth  = 0;
247                    pLFO1->ExtController = 2; // MIDI controller 2
248          switch (this->PlaybackState) {                  bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
249                    break;
250              case playback_state_init:              case ::gig::lfo1_ctrl_internal_modwheel:
251                  this->PlaybackState = playback_state_ram; // we always start playback from RAM cache and switch then to disk if needed                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
252                  // no break - continue with playback_state_ram                  pLFO1->ExtController = 1; // MIDI controller 1
253                    bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
254              case playback_state_ram: {                  break;
255                      if (RAMLoop) SYNTHESIS_MODE_SET_LOOP(SynthesisMode, true); // enable looping              case ::gig::lfo1_ctrl_internal_breath:
256                    lfo1_internal_depth  = pRegion->LFO1InternalDepth;
257                      // render current fragment                  pLFO1->ExtController = 2; // MIDI controller 2
258                      Synthesize(Samples, (sample_t*) pSample->GetCache().pStart, Delay);                  bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
259                    break;
260                      if (DiskVoice) {              default:
261                          // check if we reached the allowed limit of the sample RAM cache                  lfo1_internal_depth  = 0;
262                          if (finalSynthesisParameters.dPos > MaxRAMPos) {                  pLFO1->ExtController = 0; // no external controller
263                              dmsg(5,("Voice: switching to disk playback (Pos=%f)\n", finalSynthesisParameters.dPos));                  bLFO1Enabled         = false;
264                              this->PlaybackState = playback_state_disk;          }
265                          }          if (bLFO1Enabled) {
266                      } else if (finalSynthesisParameters.dPos >= pSample->GetCache().Size / pSample->FrameSize) {              pLFO1->trigger(pRegion->LFO1Frequency,
267                          this->PlaybackState = playback_state_end;                             start_level_min,
268                      }                             lfo1_internal_depth,
269                  }                             pRegion->LFO1ControlDepth,
270                  break;                             pRegion->LFO1FlipPhase,
271                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
272              case playback_state_disk: {              pLFO1->update(pLFO1->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO1->ExtController] : 0);
                     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);  
             }  
273          }          }
274      }      }
275    
276      /**      void Voice::InitLFO2() {
277       * Process given list of MIDI control change and pitch bend events for          uint16_t lfo2_internal_depth;
278       * the given time.          switch (pRegion->LFO2Controller) {
279       *              case ::gig::lfo2_ctrl_internal:
280       * @param itEvent - iterator pointing to the next event to be processed                  lfo2_internal_depth  = pRegion->LFO2InternalDepth;
281       * @param End     - youngest time stamp where processing should be stopped                  pLFO2->ExtController = 0; // no external controller
282       */                  bLFO2Enabled         = (lfo2_internal_depth > 0);
283      void Voice::processCCEvents(RTList<Event>::Iterator& itEvent, uint End) {                  break;
284          for (; itEvent && itEvent->FragmentPos() <= End; ++itEvent) {              case ::gig::lfo2_ctrl_modwheel:
285              if (itEvent->Type == Event::type_control_change &&                  lfo2_internal_depth  = 0;
286                  itEvent->Param.CC.Controller) { // if (valid) MIDI control change event                  pLFO2->ExtController = 1; // MIDI controller 1
287                  if (itEvent->Param.CC.Controller == VCFCutoffCtrl.controller) {                  bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
288                      processCutoffEvent(itEvent);                  break;
289                  }              case ::gig::lfo2_ctrl_foot:
290                  if (itEvent->Param.CC.Controller == VCFResonanceCtrl.controller) {                  lfo2_internal_depth  = 0;
291                      processResonanceEvent(itEvent);                  pLFO2->ExtController = 4; // MIDI controller 4
292                  }                  bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
293                  if (itEvent->Param.CC.Controller == pLFO1->ExtController) {                  break;
294                      pLFO1->update(itEvent->Param.CC.Value);              case ::gig::lfo2_ctrl_internal_modwheel:
295                  }                  lfo2_internal_depth  = pRegion->LFO2InternalDepth;
296                  if (itEvent->Param.CC.Controller == pLFO2->ExtController) {                  pLFO2->ExtController = 1; // MIDI controller 1
297                      pLFO2->update(itEvent->Param.CC.Value);                  bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
298                  }                  break;
299                  if (itEvent->Param.CC.Controller == pLFO3->ExtController) {              case ::gig::lfo2_ctrl_internal_foot:
300                      pLFO3->update(itEvent->Param.CC.Value);                  lfo2_internal_depth  = pRegion->LFO2InternalDepth;
301                  }                  pLFO2->ExtController = 4; // MIDI controller 4
302                  if (pDimRgn->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&                  bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
303                      itEvent->Param.CC.Controller == pDimRgn->AttenuationController.controller_number) {                  break;
304                      CrossfadeSmoother.update(Engine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.CC.Value)]);              default:
305                  }                  lfo2_internal_depth  = 0;
306                  if (itEvent->Param.CC.Controller == 7) { // volume                  pLFO2->ExtController = 0; // no external controller
307                      VolumeSmoother.update(Engine::VolumeCurve[itEvent->Param.CC.Value] * CONFIG_GLOBAL_ATTENUATION);                  bLFO2Enabled         = false;
308                  } else if (itEvent->Param.CC.Controller == 10) { // panpot          }
309                      PanLeftSmoother.update(Engine::PanCurve[128 - itEvent->Param.CC.Value]);          if (bLFO2Enabled) {
310                      PanRightSmoother.update(Engine::PanCurve[itEvent->Param.CC.Value]);              pLFO2->trigger(pRegion->LFO2Frequency,
311                  }                             start_level_max,
312              } else if (itEvent->Type == Event::type_pitchbend) { // if pitch bend event                             lfo2_internal_depth,
313                  processPitchEvent(itEvent);                             pRegion->LFO2ControlDepth,
314              }                             pRegion->LFO2FlipPhase,
315                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
316                pLFO2->update(pLFO2->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO2->ExtController] : 0);
317          }          }
318      }      }
319    
320      void Voice::processPitchEvent(RTList<Event>::Iterator& itEvent) {      void Voice::InitLFO3() {
321          const float pitch = RTMath::CentsToFreqRatio(((double) itEvent->Param.Pitch.Pitch / 8192.0) * 200.0); // +-two semitones = +-200 cents          uint16_t lfo3_internal_depth;
322          finalSynthesisParameters.fFinalPitch *= pitch;          switch (pRegion->LFO3Controller) {
323          PitchBend = pitch;              case ::gig::lfo3_ctrl_internal:
324                    lfo3_internal_depth  = pRegion->LFO3InternalDepth;
325                    pLFO3->ExtController = 0; // no external controller
326                    bLFO3Enabled         = (lfo3_internal_depth > 0);
327                    break;
328                case ::gig::lfo3_ctrl_modwheel:
329                    lfo3_internal_depth  = 0;
330                    pLFO3->ExtController = 1; // MIDI controller 1
331                    bLFO3Enabled         = (pRegion->LFO3ControlDepth > 0);
332                    break;
333                case ::gig::lfo3_ctrl_aftertouch:
334                    lfo3_internal_depth  = 0;
335                    pLFO3->ExtController = 128;
336                    bLFO3Enabled         = true;
337                    break;
338                case ::gig::lfo3_ctrl_internal_modwheel:
339                    lfo3_internal_depth  = pRegion->LFO3InternalDepth;
340                    pLFO3->ExtController = 1; // MIDI controller 1
341                    bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
342                    break;
343                case ::gig::lfo3_ctrl_internal_aftertouch:
344                    lfo3_internal_depth  = pRegion->LFO3InternalDepth;
345                    pLFO3->ExtController = 128;
346                    bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
347                    break;
348                default:
349                    lfo3_internal_depth  = 0;
350                    pLFO3->ExtController = 0; // no external controller
351                    bLFO3Enabled         = false;
352            }
353            if (bLFO3Enabled) {
354                pLFO3->trigger(pRegion->LFO3Frequency,
355                               start_level_mid,
356                               lfo3_internal_depth,
357                               pRegion->LFO3ControlDepth,
358                               false,
359                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
360                pLFO3->update(pLFO3->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO3->ExtController] : 0);
361            }
362      }      }
363    
364      void Voice::processCutoffEvent(RTList<Event>::Iterator& itEvent) {      float Voice::CalculateCutoffBase(uint8_t MIDIKeyVelocity) {
365          int ccvalue = itEvent->Param.CC.Value;          float cutoff = pRegion->GetVelocityCutoff(MIDIKeyVelocity);
366          if (VCFCutoffCtrl.value == ccvalue) return;          if (pRegion->VCFKeyboardTracking) {
367          VCFCutoffCtrl.value == ccvalue;              cutoff *= RTMath::CentsToFreqRatioUnlimited((MIDIKey - pRegion->VCFKeyboardTrackingBreakpoint) * 100);
368          if (pDimRgn->VCFCutoffControllerInvert)  ccvalue = 127 - ccvalue;          }
369          if (ccvalue < pDimRgn->VCFVelocityScale) ccvalue = pDimRgn->VCFVelocityScale;          return cutoff;
370          float cutoff = CutoffBase * float(ccvalue) * 0.00787402f; // (1 / 127)      }
371          if (cutoff > 1.0) cutoff = 1.0;  
372          cutoff = (cutoff < 0.5 ? cutoff * 4826 - 1 : cutoff * 5715 - 449);      float Voice::CalculateFinalCutoff(float cutoffBase) {
373          if (cutoff < 1.0) cutoff = 1.0;          int cvalue;
374            if (VCFCutoffCtrl.controller) {
375                cvalue = GetGigEngineChannel()->ControllerTable[VCFCutoffCtrl.controller];
376                if (pRegion->VCFCutoffControllerInvert) cvalue = 127 - cvalue;
377                // VCFVelocityScale in this case means Minimum cutoff
378                if (cvalue < pRegion->VCFVelocityScale) cvalue = pRegion->VCFVelocityScale;
379            }
380            else {
381                cvalue = pRegion->VCFCutoff;
382            }
383            float fco = cutoffBase * float(cvalue);
384            if (fco > 127.0f) fco = 127.0f;
385    
386          VCFCutoffCtrl.fvalue = cutoff - 1.0; // needed for initialization of fFinalCutoff next time          return fco;
         fFinalCutoff = cutoff;  
387      }      }
388    
389      void Voice::processResonanceEvent(RTList<Event>::Iterator& itEvent) {      uint8_t Voice::GetVCFCutoffCtrl() {
390          // convert absolute controller value to differential          uint8_t ctrl;
391          const int ctrldelta = itEvent->Param.CC.Value - VCFResonanceCtrl.value;          switch (pRegion->VCFCutoffController) {
392          VCFResonanceCtrl.value = itEvent->Param.CC.Value;              case ::gig::vcf_cutoff_ctrl_modwheel:
393          const float resonancedelta = (float) ctrldelta * 0.00787f; // 0.0..1.0                  ctrl = 1;
394          fFinalResonance += resonancedelta;                  break;
395          // needed for initialization of parameter              case ::gig::vcf_cutoff_ctrl_effect1:
396          VCFResonanceCtrl.fvalue = itEvent->Param.CC.Value * 0.00787f;                  ctrl = 12;
397      }                  break;
398                case ::gig::vcf_cutoff_ctrl_effect2:
399      /**                  ctrl = 13;
400       *  Synthesizes the current audio fragment for this voice.                  break;
401       *              case ::gig::vcf_cutoff_ctrl_breath:
402       *  @param Samples - number of sample points to be rendered in this audio                  ctrl = 2;
403       *                   fragment cycle                  break;
404       *  @param pSrc    - pointer to input sample data              case ::gig::vcf_cutoff_ctrl_foot:
405       *  @param Skip    - number of sample points to skip in output buffer                  ctrl = 4;
406       */                  break;
407      void Voice::Synthesize(uint Samples, sample_t* pSrc, uint Skip) {              case ::gig::vcf_cutoff_ctrl_sustainpedal:
408          finalSynthesisParameters.pOutLeft  = &pEngineChannel->pOutputLeft[Skip];                  ctrl = 64;
409          finalSynthesisParameters.pOutRight = &pEngineChannel->pOutputRight[Skip];                  break;
410          finalSynthesisParameters.pSrc      = pSrc;              case ::gig::vcf_cutoff_ctrl_softpedal:
411                    ctrl = 67;
412          RTList<Event>::Iterator itCCEvent = pEngineChannel->pEvents->first();                  break;
413          RTList<Event>::Iterator itNoteEvent = pEngineChannel->pMIDIKeyInfo[MIDIKey].pEvents->first();              case ::gig::vcf_cutoff_ctrl_genpurpose7:
414                    ctrl = 82;
415          if (Skip) { // skip events that happened before this voice was triggered                  break;
416              while (itCCEvent && itCCEvent->FragmentPos() <= Skip) ++itCCEvent;              case ::gig::vcf_cutoff_ctrl_genpurpose8:
417              while (itNoteEvent && itNoteEvent->FragmentPos() <= Skip) ++itNoteEvent;                  ctrl = 83;
418          }                  break;
419                case ::gig::vcf_cutoff_ctrl_aftertouch:
420          uint killPos;                  ctrl = 128;
421          if (itKillEvent) killPos = RTMath::Min(itKillEvent->FragmentPos(), pEngine->MaxFadeOutPos);                  break;
422                case ::gig::vcf_cutoff_ctrl_none:
423          uint i = Skip;              default:
424          while (i < Samples) {                  ctrl = 0;
425              int iSubFragmentEnd = RTMath::Min(i + CONFIG_DEFAULT_SUBFRAGMENT_SIZE, Samples);                  break;
426            }
             // initialize all final synthesis parameters  
             finalSynthesisParameters.fFinalPitch = PitchBase * PitchBend;  
             fFinalCutoff    = VCFCutoffCtrl.fvalue;  
             fFinalResonance = VCFResonanceCtrl.fvalue;  
   
             // process MIDI control change and pitchbend events for this subfragment  
             processCCEvents(itCCEvent, iSubFragmentEnd);  
   
             float fFinalVolume = VolumeSmoother.render() * CrossfadeSmoother.render();  
 #ifdef CONFIG_PROCESS_MUTED_CHANNELS  
             if (pEngineChannel->GetMute()) fFinalVolume = 0;  
 #endif  
   
             // process transition events (note on, note off & sustain pedal)  
             processTransitionEvents(itNoteEvent, iSubFragmentEnd);  
   
             // if the voice was killed in this subfragment switch EG1 to fade out stage  
             if (itKillEvent && killPos <= iSubFragmentEnd) {  
                 EG1.enterFadeOutStage();  
                 itKillEvent = Pool<Event>::Iterator();  
             }  
   
             // process envelope generators  
             switch (EG1.getSegmentType()) {  
                 case EGADSR::segment_lin:  
                     fFinalVolume *= EG1.processLin();  
                     break;  
                 case EGADSR::segment_exp:  
                     fFinalVolume *= EG1.processExp();  
                     break;  
                 case EGADSR::segment_end:  
                     fFinalVolume *= EG1.getLevel();  
                     break; // noop  
             }  
             switch (EG2.getSegmentType()) {  
                 case EGADSR::segment_lin:  
                     fFinalCutoff *= EG2.processLin();  
                     break;  
                 case EGADSR::segment_exp:  
                     fFinalCutoff *= EG2.processExp();  
                     break;  
                 case EGADSR::segment_end:  
                     fFinalCutoff *= EG2.getLevel();  
                     break; // noop  
             }  
             if (EG3.active()) finalSynthesisParameters.fFinalPitch *= EG3.render();  
   
             // process low frequency oscillators  
             if (bLFO1Enabled) fFinalVolume *= pLFO1->render();  
             if (bLFO2Enabled) fFinalCutoff *= pLFO2->render();  
             if (bLFO3Enabled) finalSynthesisParameters.fFinalPitch *= RTMath::CentsToFreqRatio(pLFO3->render());  
   
             // if filter enabled then update filter coefficients  
             if (SYNTHESIS_MODE_GET_FILTER(SynthesisMode)) {  
                 finalSynthesisParameters.filterLeft.SetParameters(fFinalCutoff + 1.0, fFinalResonance, pEngine->SampleRate);  
                 finalSynthesisParameters.filterRight.SetParameters(fFinalCutoff + 1.0, fFinalResonance, pEngine->SampleRate);  
             }  
   
             // do we need resampling?  
             const float __PLUS_ONE_CENT  = 1.000577789506554859250142541782224725466f;  
             const float __MINUS_ONE_CENT = 0.9994225441413807496009516495583113737666f;  
             const bool bResamplingRequired = !(finalSynthesisParameters.fFinalPitch <= __PLUS_ONE_CENT &&  
                                                finalSynthesisParameters.fFinalPitch >= __MINUS_ONE_CENT);  
             SYNTHESIS_MODE_SET_INTERPOLATE(SynthesisMode, bResamplingRequired);  
   
             // prepare final synthesis parameters structure  
             finalSynthesisParameters.uiToGo            = iSubFragmentEnd - i;  
 #ifdef CONFIG_INTERPOLATE_VOLUME  
             finalSynthesisParameters.fFinalVolumeDeltaLeft  =  
                 (fFinalVolume * VolumeLeft  * PanLeftSmoother.render() -  
                  finalSynthesisParameters.fFinalVolumeLeft) / finalSynthesisParameters.uiToGo;  
             finalSynthesisParameters.fFinalVolumeDeltaRight =  
                 (fFinalVolume * VolumeRight * PanRightSmoother.render() -  
                  finalSynthesisParameters.fFinalVolumeRight) / finalSynthesisParameters.uiToGo;  
 #else  
             finalSynthesisParameters.fFinalVolumeLeft  =  
                 fFinalVolume * VolumeLeft  * PanLeftSmoother.render();  
             finalSynthesisParameters.fFinalVolumeRight =  
                 fFinalVolume * VolumeRight * PanRightSmoother.render();  
 #endif  
             // render audio for one subfragment  
             RunSynthesisFunction(SynthesisMode, &finalSynthesisParameters, &loop);  
   
             // stop the rendering if volume EG is finished  
             if (EG1.getSegmentType() == EGADSR::segment_end) break;  
   
             const double newPos = Pos + (iSubFragmentEnd - i) * finalSynthesisParameters.fFinalPitch;  
   
             // increment envelopes' positions  
             if (EG1.active()) {  
   
                 // if sample has a loop and loop start has been reached in this subfragment, send a special event to EG1 to let it finish the attack hold stage  
                 if (pSample->Loops && Pos <= pSample->LoopStart && pSample->LoopStart < newPos) {  
                     EG1.update(EGADSR::event_hold_end, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
                 }  
427    
428                  EG1.increment(1);          return ctrl;
429                  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  
430    
431              Pos = newPos;      uint8_t Voice::GetVCFResonanceCtrl() {
432              i = iSubFragmentEnd;          uint8_t ctrl;
433            switch (pRegion->VCFResonanceController) {
434                case ::gig::vcf_res_ctrl_genpurpose3:
435                    ctrl = 18;
436                    break;
437                case ::gig::vcf_res_ctrl_genpurpose4:
438                    ctrl = 19;
439                    break;
440                case ::gig::vcf_res_ctrl_genpurpose5:
441                    ctrl = 80;
442                    break;
443                case ::gig::vcf_res_ctrl_genpurpose6:
444                    ctrl = 81;
445                    break;
446                case ::gig::vcf_res_ctrl_none:
447                default:
448                    ctrl = 0;
449          }          }
450    
451            return ctrl;
452      }      }
453    
454      /** @brief Update current portamento position.      void Voice::TriggerEG1(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
455       *          EG1.trigger(uint(RgnInfo.EG1PreAttack),
456       * Will be called when portamento mode is enabled to get the final                      RgnInfo.EG1Attack * egInfo.Attack,
457       * portamento position of this active voice from where the next voice(s)                      RgnInfo.EG1Hold,
458       * might continue to slide on.                      RgnInfo.EG1Decay1 * egInfo.Decay * velrelease,
459       *                      RgnInfo.EG1Decay2 * egInfo.Decay * velrelease,
460       * @param itNoteOffEvent - event which causes this voice to die soon                      RgnInfo.EG1InfiniteSustain,
461       */                      uint(RgnInfo.EG1Sustain),
462      void Voice::UpdatePortamentoPos(Pool<Event>::Iterator& itNoteOffEvent) {                      RgnInfo.EG1Release * egInfo.Release * velrelease,
463          const float fFinalEG3Level = EG3.level(itNoteOffEvent->FragmentPos());                      velocityAttenuation,
464          pEngineChannel->PortamentoPos = (float) MIDIKey + RTMath::FreqRatioToCents(fFinalEG3Level) * 0.01f;                      sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
465      }      }
466    
467      /**      void Voice::TriggerEG2(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
468       *  Immediately kill the voice. This method should not be used to kill          EG2.trigger(uint(RgnInfo.EG2PreAttack),
469       *  a normal, active voice, because it doesn't take care of things like                      RgnInfo.EG2Attack * egInfo.Attack,
470       *  fading down the volume level to avoid clicks and regular processing                      false,
471       *  until the kill event actually occured!                      RgnInfo.EG2Decay1 * egInfo.Decay * velrelease,
472       *                      RgnInfo.EG2Decay2 * egInfo.Decay * velrelease,
473       *  @see Kill()                      RgnInfo.EG2InfiniteSustain,
474       */                      uint(RgnInfo.EG2Sustain),
475      void Voice::KillImmediately() {                      RgnInfo.EG2Release * egInfo.Release * velrelease,
476          if (DiskVoice && DiskStreamRef.State != Stream::state_unused) {                      velocityAttenuation,
477              pDiskThread->OrderDeletionOfStream(&DiskStreamRef);                      sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
478          }      }
479          Reset();  
480      }      void Voice::ProcessGroupEvent(RTList<Event>::Iterator& itEvent) {
481            dmsg(4,("Voice %x processGroupEvents event type=%d", this, itEvent->Type));
482      /**  
483       *  Kill the voice in regular sense. Let the voice render audio until          // TODO: The SustainPedal condition could be wrong, maybe the
484       *  the kill event actually occured and then fade down the volume level          // check should be if this Voice is in release stage or is a
485       *  very quickly and let the voice die finally. Unlike a normal release          // release sample instead. Need to test this in GSt.
486       *  of a voice, a kill process cannot be cancalled and is therefore          if (itEvent->Param.Note.Key != MIDIKey ||
487       *  usually used for voice stealing and key group conflicts.              !GetGigEngineChannel()->SustainPedal) {
488       *              dmsg(4,("Voice %x - kill", this));
      *  @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  
489    
490          if (itTriggerEvent && itKillEvent->FragmentPos() <= itTriggerEvent->FragmentPos()) return;              // kill the voice fast
491          this->itKillEvent = itKillEvent;              pEG1->enterFadeOutStage();
492            }
493      }      }
494    
495  }} // namespace LinuxSampler::gig  }} // namespace LinuxSampler::gig
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