/[svn]/linuxsampler/trunk/src/engines/gig/Voice.cpp
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revision 738 by schoenebeck, Tue Aug 16 17:14:25 2005 UTC revision 2396 by schoenebeck, Tue Jan 8 12:00:45 2013 UTC
# Line 3  Line 3 
3   *   LinuxSampler - modular, streaming capable sampler                     *   *   LinuxSampler - modular, streaming capable sampler                     *
4   *                                                                         *   *                                                                         *
5   *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *   *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *
6   *   Copyright (C) 2005 Christian Schoenebeck                              *   *   Copyright (C) 2005 - 2008 Christian Schoenebeck                       *
7     *   Copyright (C) 2009 - 2012 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 23  Line 24 
24    
25  #include "../../common/Features.h"  #include "../../common/Features.h"
26  #include "Synthesizer.h"  #include "Synthesizer.h"
27    #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    
     const float Voice::FILTER_CUTOFF_COEFF(CalculateFilterCutoffCoeff());  
   
     float Voice::CalculateFilterCutoffCoeff() {  
         return log(CONFIG_FILTER_CUTOFF_MAX / CONFIG_FILTER_CUTOFF_MIN);  
     }  
   
35      Voice::Voice() {      Voice::Voice() {
36          pEngine     = NULL;          pEngine = NULL;
37          pDiskThread = NULL;          pEG1 = &EG1;
38          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, true);  
   
         FilterLeft.Reset();  
         FilterRight.Reset();  
39      }      }
40    
41      Voice::~Voice() {      Voice::~Voice() {
         if (pLFO1) delete pLFO1;  
         if (pLFO2) delete pLFO2;  
         if (pLFO3) delete pLFO3;  
42      }      }
43    
44      void Voice::SetEngine(Engine* pEngine) {      EngineChannel* Voice::GetGigEngineChannel() {
45          this->pEngine     = pEngine;          return static_cast<EngineChannel*>(pEngineChannel);
46          this->pDiskThread = pEngine->pDiskThread;      }
47    
48        void Voice::SetEngine(LinuxSampler::Engine* pEngine) {
49            Engine* engine = static_cast<Engine*>(pEngine);
50            this->pEngine     = engine;
51            this->pDiskThread = engine->pDiskThread;
52          dmsg(6,("Voice::SetEngine()\n"));          dmsg(6,("Voice::SetEngine()\n"));
53      }      }
54    
55      /**      Voice::SampleInfo Voice::GetSampleInfo() {
56       *  Initializes and triggers the voice, a disk stream will be launched if          SampleInfo si;
57       *  needed.          si.SampleRate       = pSample->SamplesPerSecond;
58       *          si.ChannelCount     = pSample->Channels;
59       *  @param pEngineChannel - engine channel on which this voice was ordered          si.FrameSize        = pSample->FrameSize;
60       *  @param itNoteOnEvent  - event that caused triggering of this voice          si.BitDepth         = pSample->BitDepth;
61       *  @param PitchBend      - MIDI detune factor (-8192 ... +8191)          si.TotalFrameCount  = pSample->SamplesTotal;
      *  @param pDimRgn        - points to the dimension region which provides sample wave(s) and articulation data  
      *  @param VoiceType      - type of this voice  
      *  @param iKeyGroup      - a value > 0 defines a key group in which this voice is member of  
      *  @returns 0 on success, a value < 0 if the voice wasn't triggered  
      *           (either due to an error or e.g. because no region is  
      *           defined for the given key)  
      */  
     int Voice::Trigger(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent, int PitchBend, ::gig::DimensionRegion* pDimRgn, type_t VoiceType, int iKeyGroup) {  
         this->pEngineChannel = pEngineChannel;  
         this->pDimRgn        = pDimRgn;  
   
         #if CONFIG_DEVMODE  
         if (itNoteOnEvent->FragmentPos() > pEngine->MaxSamplesPerCycle) { // just a sanity check for debugging  
             dmsg(1,("Voice::Trigger(): ERROR, TriggerDelay > Totalsamples\n"));  
         }  
         #endif // CONFIG_DEVMODE  
   
         Type            = VoiceType;  
         MIDIKey         = itNoteOnEvent->Param.Note.Key;  
         PlaybackState   = playback_state_init; // mark voice as triggered, but no audio rendered yet  
         Delay           = itNoteOnEvent->FragmentPos();  
         itTriggerEvent  = itNoteOnEvent;  
         itKillEvent     = Pool<Event>::Iterator();  
         KeyGroup        = iKeyGroup;  
         pSample         = pDimRgn->pSample; // sample won't change until the voice is finished  
   
         // calculate volume  
         const double velocityAttenuation = pDimRgn->GetVelocityAttenuation(itNoteOnEvent->Param.Note.Velocity);  
   
         Volume = velocityAttenuation / 32768.0f; // we downscale by 32768 to convert from int16 value range to DSP value range (which is -1.0..1.0)  
   
         Volume *= pDimRgn->SampleAttenuation;  
   
         // the volume of release triggered samples depends on note length  
         if (Type == type_release_trigger) {  
             float noteLength = float(pEngine->FrameTime + Delay -  
                                      pEngineChannel->pMIDIKeyInfo[MIDIKey].NoteOnTime) / pEngine->SampleRate;  
             float attenuation = 1 - 0.01053 * (256 >> pDimRgn->ReleaseTriggerDecay) * noteLength;  
             if (attenuation <= 0) return -1;  
             Volume *= attenuation;  
         }  
62    
63          // select channel mode (mono or stereo)          si.HasLoops       = pRegion->SampleLoops;
64          SYNTHESIS_MODE_SET_CHANNELS(SynthesisMode, pSample->Channels == 2);          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          // get starting crossfade volume level          return si;
70          switch (pDimRgn->AttenuationController.type) {      }
             case ::gig::attenuation_ctrl_t::type_channelaftertouch:  
                 CrossfadeVolume = 1.0f; //TODO: aftertouch not supported yet  
                 break;  
             case ::gig::attenuation_ctrl_t::type_velocity:  
                 CrossfadeVolume = CrossfadeAttenuation(itNoteOnEvent->Param.Note.Velocity);  
                 break;  
             case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate  
                 CrossfadeVolume = CrossfadeAttenuation(pEngineChannel->ControllerTable[pDimRgn->AttenuationController.controller_number]);  
                 break;  
             case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined  
             default:  
                 CrossfadeVolume = 1.0f;  
         }  
71    
72          PanLeft  = 1.0f - float(RTMath::Max(pDimRgn->Pan, 0)) /  63.0f;      Voice::RegionInfo Voice::GetRegionInfo() {
73          PanRight = 1.0f - float(RTMath::Min(pDimRgn->Pan, 0)) / -64.0f;          RegionInfo ri;
74            ri.UnityNote = pRegion->UnityNote;
75            ri.FineTune  = pRegion->FineTune;
76            ri.Pan       = pRegion->Pan;
77            ri.SampleStartOffset = pRegion->SampleStartOffset;
78    
79          Pos = pDimRgn->SampleStartOffset; // offset where we should start playback of sample (0 - 2000 sample points)          ri.EG2PreAttack        = pRegion->EG2PreAttack;
80            ri.EG2Attack           = pRegion->EG2Attack;
81            ri.EG2Decay1           = pRegion->EG2Decay1;
82            ri.EG2Decay2           = pRegion->EG2Decay2;
83            ri.EG2Sustain          = pRegion->EG2Sustain;
84            ri.EG2InfiniteSustain  = pRegion->EG2InfiniteSustain;
85            ri.EG2Release          = pRegion->EG2Release;
86    
87          // Check if the sample needs disk streaming or is too short for that          ri.EG3Attack     = pRegion->EG3Attack;
88          long cachedsamples = pSample->GetCache().Size / pSample->FrameSize;          ri.EG3Depth      = pRegion->EG3Depth;
89          DiskVoice          = cachedsamples < pSample->SamplesTotal;          ri.VCFEnabled    = pRegion->VCFEnabled;
90            ri.VCFType       = Filter::vcf_type_t(pRegion->VCFType);
91            ri.VCFResonance  = pRegion->VCFResonance;
92    
93          if (DiskVoice) { // voice to be streamed from disk          ri.ReleaseTriggerDecay = 0.01053 * (256 >> pRegion->ReleaseTriggerDecay);
             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)  
94    
95              // check if there's a loop defined which completely fits into the cached (RAM) part of the sample          return ri;
96              if (pSample->Loops && pSample->LoopEnd <= MaxRAMPos) {      }
                 RAMLoop        = true;  
                 LoopCyclesLeft = pSample->LoopPlayCount;  
             }  
             else RAMLoop = false;  
97    
98              if (pDiskThread->OrderNewStream(&DiskStreamRef, pSample, MaxRAMPos, !RAMLoop) < 0) {      Voice::InstrumentInfo Voice::GetInstrumentInfo() {
99                  dmsg(1,("Disk stream order failed!\n"));          InstrumentInfo ii;
100                  KillImmediately();          ii.FineTune = GetGigEngineChannel()->pInstrument->FineTune;
101                  return -1;          ii.PitchbendRange = GetGigEngineChannel()->pInstrument->PitchbendRange;
             }  
             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;  
             if (pSample->Loops) {  
                 RAMLoop        = true;  
                 LoopCyclesLeft = pSample->LoopPlayCount;  
             }  
             else RAMLoop = false;  
             dmsg(4,("RAM only voice launched (Looping: %s)\n", (RAMLoop) ? "yes" : "no"));  
         }  
102    
103            return ii;
104        }
105    
106          // calculate initial pitch value      double Voice::GetSampleAttenuation() {
107          {          return pRegion->SampleAttenuation;
108              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;  
109    
110              // calculate influence of EG1 controller on EG1's parameters      double Voice::GetVelocityAttenuation(uint8_t MIDIKeyVelocity) {
111              // (eg1attack is different from the others)          return pRegion->GetVelocityAttenuation(MIDIKeyVelocity);
112              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,  
                         pSample->LoopStart,  
                         pDimRgn->EG1Decay1 * eg1decay * velrelease,  
                         pDimRgn->EG1Decay2 * eg1decay * velrelease,  
                         pDimRgn->EG1InfiniteSustain,  
                         pDimRgn->EG1Sustain,  
                         pDimRgn->EG1Release * eg1release * velrelease,  
                         velocityAttenuation,  
                         pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
         }  
113    
114        double Voice::GetVelocityRelease(uint8_t MIDIKeyVelocity) {
115            return pRegion->GetVelocityRelease(MIDIKeyVelocity);
116        }
117    
118          // setup EG 2 (VCF Cutoff EG)      void Voice::ProcessCCEvent(RTList<Event>::Iterator& itEvent) {
119          {          if (itEvent->Type == Event::type_control_change && itEvent->Param.CC.Controller) { // if (valid) MIDI control change event
120              // get current value of EG2 controller              if (pRegion->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&
121              double eg2controllervalue;                  itEvent->Param.CC.Controller == pRegion->AttenuationController.controller_number) {
122              switch (pDimRgn->EG2Controller.type) {                  CrossfadeSmoother.update(AbstractEngine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.CC.Value)]);
                 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;  
123              }              }
             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,  
                         pSample->LoopStart,  
                         pDimRgn->EG2Decay1 * eg2decay * velrelease,  
                         pDimRgn->EG2Decay2 * eg2decay * velrelease,  
                         pDimRgn->EG2InfiniteSustain,  
                         pDimRgn->EG2Sustain,  
                         pDimRgn->EG2Release * eg2release * velrelease,  
                         velocityAttenuation,  
                         pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
124          }          }
125        }
126    
127        void Voice::ProcessCutoffEvent(RTList<Event>::Iterator& itEvent) {
128            int ccvalue = itEvent->Param.CC.Value;
129            if (VCFCutoffCtrl.value == ccvalue) return;
130            VCFCutoffCtrl.value = ccvalue;
131            if (pRegion->VCFCutoffControllerInvert)  ccvalue = 127 - ccvalue;
132            if (ccvalue < pRegion->VCFVelocityScale) ccvalue = pRegion->VCFVelocityScale;
133            float cutoff = CutoffBase * float(ccvalue);
134            if (cutoff > 127.0f) cutoff = 127.0f;
135    
136          // setup EG 3 (VCO EG)          VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of fFinalCutoff next time
137          {          fFinalCutoff = cutoff;
138            double eg3depth = RTMath::CentsToFreqRatio(pDimRgn->EG3Depth);      }
           EG3.trigger(eg3depth, pDimRgn->EG3Attack, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
         }  
   
139    
140          // setup LFO 1 (VCA LFO)      double Voice::CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity) {
141          {          float crossfadeVolume;
142              uint16_t lfo1_internal_depth;          switch (pRegion->AttenuationController.type) {
143              switch (pDimRgn->LFO1Controller) {              case ::gig::attenuation_ctrl_t::type_channelaftertouch:
144                  case ::gig::lfo1_ctrl_internal:                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[128])];
145                      lfo1_internal_depth  = pDimRgn->LFO1InternalDepth;                  break;
146                      pLFO1->ExtController = 0; // no external controller              case ::gig::attenuation_ctrl_t::type_velocity:
147                      bLFO1Enabled         = (lfo1_internal_depth > 0);                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(MIDIKeyVelocity)];
148                      break;                  break;
149                  case ::gig::lfo1_ctrl_modwheel:              case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate
150                      lfo1_internal_depth  = 0;                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[pRegion->AttenuationController.controller_number])];
151                      pLFO1->ExtController = 1; // MIDI controller 1                  break;
152                      bLFO1Enabled         = (pDimRgn->LFO1ControlDepth > 0);              case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined
153                      break;              default:
154                  case ::gig::lfo1_ctrl_breath:                  crossfadeVolume = 1.0f;
                     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);  
155          }          }
156    
157            return crossfadeVolume;
158        }
159    
160          // setup LFO 2 (VCF Cutoff LFO)      double Voice::GetEG1ControllerValue(uint8_t MIDIKeyVelocity) {
161          {          double eg1controllervalue = 0;
162              uint16_t lfo2_internal_depth;          switch (pRegion->EG1Controller.type) {
163              switch (pDimRgn->LFO2Controller) {              case ::gig::eg1_ctrl_t::type_none: // no controller defined
164                  case ::gig::lfo2_ctrl_internal:                  eg1controllervalue = 0;
165                      lfo2_internal_depth  = pDimRgn->LFO2InternalDepth;                  break;
166                      pLFO2->ExtController = 0; // no external controller              case ::gig::eg1_ctrl_t::type_channelaftertouch:
167                      bLFO2Enabled         = (lfo2_internal_depth > 0);                  eg1controllervalue = GetGigEngineChannel()->ControllerTable[128];
168                      break;                  break;
169                  case ::gig::lfo2_ctrl_modwheel:              case ::gig::eg1_ctrl_t::type_velocity:
170                      lfo2_internal_depth  = 0;                  eg1controllervalue = MIDIKeyVelocity;
171                      pLFO2->ExtController = 1; // MIDI controller 1                  break;
172                      bLFO2Enabled         = (pDimRgn->LFO2ControlDepth > 0);              case ::gig::eg1_ctrl_t::type_controlchange: // MIDI control change controller
173                      break;                  eg1controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG1Controller.controller_number];
174                  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);  
175          }          }
176            if (pRegion->EG1ControllerInvert) eg1controllervalue = 127 - eg1controllervalue;
177    
178            return eg1controllervalue;
179        }
180    
181          // setup LFO 3 (VCO LFO)      Voice::EGInfo Voice::CalculateEG1ControllerInfluence(double eg1ControllerValue) {
182          {          EGInfo eg;
183              uint16_t lfo3_internal_depth;          // (eg1attack is different from the others)
184              switch (pDimRgn->LFO3Controller) {          eg.Attack  = (pRegion->EG1ControllerAttackInfluence)  ?
185                  case ::gig::lfo3_ctrl_internal:              1 + 0.031 * (double) (pRegion->EG1ControllerAttackInfluence == 1 ?
186                      lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;                                    1 : 1 << pRegion->EG1ControllerAttackInfluence) * eg1ControllerValue : 1.0;
187                      pLFO3->ExtController = 0; // no external controller          eg.Decay   = (pRegion->EG1ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerDecayInfluence)   * eg1ControllerValue : 1.0;
188                      bLFO3Enabled         = (lfo3_internal_depth > 0);          eg.Release = (pRegion->EG1ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerReleaseInfluence) * eg1ControllerValue : 1.0;
                     break;  
                 case ::gig::lfo3_ctrl_modwheel:  
                     lfo3_internal_depth  = 0;  
                     pLFO3->ExtController = 1; // MIDI controller 1  
                     bLFO3Enabled         = (pDimRgn->LFO3ControlDepth > 0);  
                     break;  
                 case ::gig::lfo3_ctrl_aftertouch:  
                     lfo3_internal_depth  = 0;  
                     pLFO3->ExtController = 0; // TODO: aftertouch not implemented yet  
                     bLFO3Enabled         = false; // see TODO comment in line above  
                     break;  
                 case ::gig::lfo3_ctrl_internal_modwheel:  
                     lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;  
                     pLFO3->ExtController = 1; // MIDI controller 1  
                     bLFO3Enabled         = (lfo3_internal_depth > 0 || pDimRgn->LFO3ControlDepth > 0);  
                     break;  
                 case ::gig::lfo3_ctrl_internal_aftertouch:  
                     lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;  
                     pLFO1->ExtController = 0; // TODO: aftertouch not implemented yet  
                     bLFO3Enabled         = (lfo3_internal_depth > 0 /*|| pDimRgn->LFO3ControlDepth > 0*/); // see TODO comment in line above  
                     break;  
                 default:  
                     lfo3_internal_depth  = 0;  
                     pLFO3->ExtController = 0; // no external controller  
                     bLFO3Enabled         = false;  
             }  
             if (bLFO3Enabled) pLFO3->trigger(pDimRgn->LFO3Frequency,  
                                              start_level_mid,  
                                              lfo3_internal_depth,  
                                              pDimRgn->LFO3ControlDepth,  
                                              false,  
                                              pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
         }  
189    
190            return eg;
191        }
192    
193          #if CONFIG_FORCE_FILTER      double Voice::GetEG2ControllerValue(uint8_t MIDIKeyVelocity) {
194          const bool bUseFilter = true;          double eg2controllervalue = 0;
195          #else // use filter only if instrument file told so          switch (pRegion->EG2Controller.type) {
196          const bool bUseFilter = pDimRgn->VCFEnabled;              case ::gig::eg2_ctrl_t::type_none: // no controller defined
197          #endif // CONFIG_FORCE_FILTER                  eg2controllervalue = 0;
198          SYNTHESIS_MODE_SET_FILTER(SynthesisMode, bUseFilter);                  break;
199          if (bUseFilter) {              case ::gig::eg2_ctrl_t::type_channelaftertouch:
200              #ifdef CONFIG_OVERRIDE_CUTOFF_CTRL                  eg2controllervalue = GetGigEngineChannel()->ControllerTable[128];
201              VCFCutoffCtrl.controller = CONFIG_OVERRIDE_CUTOFF_CTRL;                  break;
202              #else // use the one defined in the instrument file              case ::gig::eg2_ctrl_t::type_velocity:
203              switch (pDimRgn->VCFCutoffController) {                  eg2controllervalue = MIDIKeyVelocity;
204                  case ::gig::vcf_cutoff_ctrl_modwheel:                  break;
205                      VCFCutoffCtrl.controller = 1;              case ::gig::eg2_ctrl_t::type_controlchange: // MIDI control change controller
206                      break;                  eg2controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG2Controller.controller_number];
207                  case ::gig::vcf_cutoff_ctrl_effect1:                  break;
208                      VCFCutoffCtrl.controller = 12;          }
209                      break;          if (pRegion->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue;
                 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  
210    
211              #ifdef CONFIG_OVERRIDE_RESONANCE_CTRL          return eg2controllervalue;
212              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  
213    
214              #ifndef CONFIG_OVERRIDE_FILTER_TYPE      Voice::EGInfo Voice::CalculateEG2ControllerInfluence(double eg2ControllerValue) {
215              FilterLeft.SetType(pDimRgn->VCFType);          EGInfo eg;
216              FilterRight.SetType(pDimRgn->VCFType);          eg.Attack  = (pRegion->EG2ControllerAttackInfluence)  ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerAttackInfluence)  * eg2ControllerValue : 1.0;
217              #else // override filter type          eg.Decay   = (pRegion->EG2ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerDecayInfluence)   * eg2ControllerValue : 1.0;
218              FilterLeft.SetType(CONFIG_OVERRIDE_FILTER_TYPE);          eg.Release = (pRegion->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerReleaseInfluence) * eg2ControllerValue : 1.0;
             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;  
219    
220              int cvalue;          return eg;
221              if (VCFCutoffCtrl.controller) {      }
                 cvalue = pEngineChannel->ControllerTable[VCFCutoffCtrl.controller];  
                 if (pDimRgn->VCFCutoffControllerInvert) cvalue = 127 - cvalue;  
                 if (cvalue < pDimRgn->VCFVelocityScale) cvalue = pDimRgn->VCFVelocityScale;  
             }  
             else {  
                 cvalue = pDimRgn->VCFCutoff;  
             }  
             cutoff *= float(cvalue) * 0.00787402f; // (1 / 127)  
             if (cutoff > 1.0) cutoff = 1.0;  
             cutoff = exp(cutoff * FILTER_CUTOFF_COEFF) * CONFIG_FILTER_CUTOFF_MIN;  
   
             // calculate resonance  
             float resonance = (float) VCFResonanceCtrl.value * 0.00787f;   // 0.0..1.0  
             if (pDimRgn->VCFKeyboardTracking) {  
                 resonance += (float) (itNoteOnEvent->Param.Note.Key - pDimRgn->VCFKeyboardTrackingBreakpoint) * 0.00787f;  
             }  
             Constrain(resonance, 0.0, 1.0); // correct resonance if outside allowed value range (0.0..1.0)  
222    
223              VCFCutoffCtrl.fvalue    = cutoff - CONFIG_FILTER_CUTOFF_MIN;      void Voice::InitLFO1() {
224              VCFResonanceCtrl.fvalue = resonance;          uint16_t lfo1_internal_depth;
225          }          switch (pRegion->LFO1Controller) {
226          else {              case ::gig::lfo1_ctrl_internal:
227              VCFCutoffCtrl.controller    = 0;                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
228              VCFResonanceCtrl.controller = 0;                  pLFO1->ExtController = 0; // no external controller
229                    bLFO1Enabled         = (lfo1_internal_depth > 0);
230                    break;
231                case ::gig::lfo1_ctrl_modwheel:
232                    lfo1_internal_depth  = 0;
233                    pLFO1->ExtController = 1; // MIDI controller 1
234                    bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
235                    break;
236                case ::gig::lfo1_ctrl_breath:
237                    lfo1_internal_depth  = 0;
238                    pLFO1->ExtController = 2; // MIDI controller 2
239                    bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
240                    break;
241                case ::gig::lfo1_ctrl_internal_modwheel:
242                    lfo1_internal_depth  = pRegion->LFO1InternalDepth;
243                    pLFO1->ExtController = 1; // MIDI controller 1
244                    bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
245                    break;
246                case ::gig::lfo1_ctrl_internal_breath:
247                    lfo1_internal_depth  = pRegion->LFO1InternalDepth;
248                    pLFO1->ExtController = 2; // MIDI controller 2
249                    bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
250                    break;
251                default:
252                    lfo1_internal_depth  = 0;
253                    pLFO1->ExtController = 0; // no external controller
254                    bLFO1Enabled         = false;
255            }
256            if (bLFO1Enabled) {
257                pLFO1->trigger(pRegion->LFO1Frequency,
258                               start_level_min,
259                               lfo1_internal_depth,
260                               pRegion->LFO1ControlDepth,
261                               pRegion->LFO1FlipPhase,
262                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
263                pLFO1->update(pLFO1->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO1->ExtController] : 0);
264          }          }
   
         return 0; // success  
265      }      }
266    
267      /**      void Voice::InitLFO2() {
268       *  Renders the audio data for this voice for the current audio fragment.          uint16_t lfo2_internal_depth;
269       *  The sample input data can either come from RAM (cached sample or sample          switch (pRegion->LFO2Controller) {
270       *  part) or directly from disk. The output signal will be rendered by              case ::gig::lfo2_ctrl_internal:
271       *  resampling / interpolation. If this voice is a disk streaming voice and                  lfo2_internal_depth  = pRegion->LFO2InternalDepth;
272       *  the voice completely played back the cached RAM part of the sample, it                  pLFO2->ExtController = 0; // no external controller
273       *  will automatically switch to disk playback for the next RenderAudio()                  bLFO2Enabled         = (lfo2_internal_depth > 0);
274       *  call.                  break;
275       *              case ::gig::lfo2_ctrl_modwheel:
276       *  @param Samples - number of samples to be rendered in this audio fragment cycle                  lfo2_internal_depth  = 0;
277       */                  pLFO2->ExtController = 1; // MIDI controller 1
278      void Voice::Render(uint Samples) {                  bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
279                    break;
280          // select default values for synthesis mode bits              case ::gig::lfo2_ctrl_foot:
281          SYNTHESIS_MODE_SET_LOOP(SynthesisMode, false);                  lfo2_internal_depth  = 0;
282                    pLFO2->ExtController = 4; // MIDI controller 4
283          switch (this->PlaybackState) {                  bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
284                    break;
285              case playback_state_init:              case ::gig::lfo2_ctrl_internal_modwheel:
286                  this->PlaybackState = playback_state_ram; // we always start playback from RAM cache and switch then to disk if needed                  lfo2_internal_depth  = pRegion->LFO2InternalDepth;
287                  // no break - continue with playback_state_ram                  pLFO2->ExtController = 1; // MIDI controller 1
288                    bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
289              case playback_state_ram: {                  break;
290                      if (RAMLoop) SYNTHESIS_MODE_SET_LOOP(SynthesisMode, true); // enable looping              case ::gig::lfo2_ctrl_internal_foot:
291                    lfo2_internal_depth  = pRegion->LFO2InternalDepth;
292                      // render current fragment                  pLFO2->ExtController = 4; // MIDI controller 4
293                      Synthesize(Samples, (sample_t*) pSample->GetCache().pStart, Delay);                  bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
294                    break;
295                      if (DiskVoice) {              default:
296                          // check if we reached the allowed limit of the sample RAM cache                  lfo2_internal_depth  = 0;
297                          if (Pos > MaxRAMPos) {                  pLFO2->ExtController = 0; // no external controller
298                              dmsg(5,("Voice: switching to disk playback (Pos=%f)\n", Pos));                  bLFO2Enabled         = false;
299                              this->PlaybackState = playback_state_disk;          }
300                          }          if (bLFO2Enabled) {
301                      }              pLFO2->trigger(pRegion->LFO2Frequency,
302                      else if (Pos >= pSample->GetCache().Size / pSample->FrameSize) {                             start_level_max,
303                          this->PlaybackState = playback_state_end;                             lfo2_internal_depth,
304                      }                             pRegion->LFO2ControlDepth,
305                  }                             pRegion->LFO2FlipPhase,
306                  break;                             pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
307                pLFO2->update(pLFO2->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO2->ExtController] : 0);
             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(Pos) - MaxRAMPos));  
                         Pos -= int(Pos);  
                         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) Pos;  
                     const int readSampleWords = iPos * pSample->Channels; // amount of sample words actually been read  
                     DiskStreamRef.pStream->IncrementReadPos(readSampleWords);  
                     Pos -= iPos; // just keep fractional part of Pos  
   
                     // 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 synthesis event lists  
         pEngineChannel->pEvents->clear();  
   
         // 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() {  
         FilterLeft.Reset();  
         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, this->Pos, fFinalPitch, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
                 EG2.update(EGADSR::event_release, this->Pos, fFinalPitch, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
             } else if (itEvent->Type == Event::type_cancel_release) {  
                 EG1.update(EGADSR::event_cancel_release, this->Pos, fFinalPitch, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
                 EG2.update(EGADSR::event_cancel_release, this->Pos, fFinalPitch, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
             }  
308          }          }
309      }      }
310    
311      /**      void Voice::InitLFO3() {
312       * Process given list of MIDI control change and pitch bend events for          uint16_t lfo3_internal_depth;
313       * the given time.          switch (pRegion->LFO3Controller) {
314       *              case ::gig::lfo3_ctrl_internal:
315       * @param itEvent - iterator pointing to the next event to be processed                  lfo3_internal_depth  = pRegion->LFO3InternalDepth;
316       * @param End     - youngest time stamp where processing should be stopped                  pLFO3->ExtController = 0; // no external controller
317       */                  bLFO3Enabled         = (lfo3_internal_depth > 0);
318      void Voice::processCCEvents(RTList<Event>::Iterator& itEvent, uint End) {                  break;
319          for (; itEvent && itEvent->FragmentPos() <= End; ++itEvent) {              case ::gig::lfo3_ctrl_modwheel:
320              if (itEvent->Type == Event::type_control_change &&                  lfo3_internal_depth  = 0;
321                  itEvent->Param.CC.Controller) { // if (valid) MIDI control change event                  pLFO3->ExtController = 1; // MIDI controller 1
322                  if (itEvent->Param.CC.Controller == VCFCutoffCtrl.controller) {                  bLFO3Enabled         = (pRegion->LFO3ControlDepth > 0);
323                      processCutoffEvent(itEvent);                  break;
324                  }              case ::gig::lfo3_ctrl_aftertouch:
325                  if (itEvent->Param.CC.Controller == VCFResonanceCtrl.controller) {                  lfo3_internal_depth  = 0;
326                      processResonanceEvent(itEvent);                  pLFO3->ExtController = 128;
327                  }                  bLFO3Enabled         = true;
328                  if (itEvent->Param.CC.Controller == pLFO1->ExtController) {                  break;
329                      pLFO1->update(itEvent->Param.CC.Value);              case ::gig::lfo3_ctrl_internal_modwheel:
330                  }                  lfo3_internal_depth  = pRegion->LFO3InternalDepth;
331                  if (itEvent->Param.CC.Controller == pLFO2->ExtController) {                  pLFO3->ExtController = 1; // MIDI controller 1
332                      pLFO2->update(itEvent->Param.CC.Value);                  bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
333                  }                  break;
334                  if (itEvent->Param.CC.Controller == pLFO3->ExtController) {              case ::gig::lfo3_ctrl_internal_aftertouch:
335                      pLFO3->update(itEvent->Param.CC.Value);                  lfo3_internal_depth  = pRegion->LFO3InternalDepth;
336                  }                  pLFO3->ExtController = 128;
337                  if (pDimRgn->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&                  bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
338                      itEvent->Param.CC.Controller == pDimRgn->AttenuationController.controller_number) {                  break;
339                      processCrossFadeEvent(itEvent);              default:
340                  }                  lfo3_internal_depth  = 0;
341              } else if (itEvent->Type == Event::type_pitchbend) { // if pitch bend event                  pLFO3->ExtController = 0; // no external controller
342                  processPitchEvent(itEvent);                  bLFO3Enabled         = false;
343              }          }
344            if (bLFO3Enabled) {
345                pLFO3->trigger(pRegion->LFO3Frequency,
346                               start_level_mid,
347                               lfo3_internal_depth,
348                               pRegion->LFO3ControlDepth,
349                               false,
350                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
351                pLFO3->update(pLFO3->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO3->ExtController] : 0);
352          }          }
353      }      }
354    
355      void Voice::processPitchEvent(RTList<Event>::Iterator& itEvent) {      float Voice::CalculateCutoffBase(uint8_t MIDIKeyVelocity) {
356          const float pitch = RTMath::CentsToFreqRatio(((double) itEvent->Param.Pitch.Pitch / 8192.0) * 200.0); // +-two semitones = +-200 cents          float cutoff = pRegion->GetVelocityCutoff(MIDIKeyVelocity);
357          fFinalPitch *= pitch;          if (pRegion->VCFKeyboardTracking) {
358      }              cutoff *= RTMath::CentsToFreqRatioUnlimited((MIDIKey - pRegion->VCFKeyboardTrackingBreakpoint) * 100);
359            }
360      void Voice::processCrossFadeEvent(RTList<Event>::Iterator& itEvent) {          return cutoff;
361          CrossfadeVolume = CrossfadeAttenuation(itEvent->Param.CC.Value);      }
362          #if CONFIG_PROCESS_MUTED_CHANNELS  
363          const float effectiveVolume = CrossfadeVolume * Volume * (pEngineChannel->GetMute() ? 0 : pEngineChannel->GlobalVolume);      float Voice::CalculateFinalCutoff(float cutoffBase) {
364          #else          int cvalue;
365          const float effectiveVolume = CrossfadeVolume * Volume * pEngineChannel->GlobalVolume;          if (VCFCutoffCtrl.controller) {
366          #endif              cvalue = GetGigEngineChannel()->ControllerTable[VCFCutoffCtrl.controller];
367          fFinalVolume = effectiveVolume;              if (pRegion->VCFCutoffControllerInvert) cvalue = 127 - cvalue;
368      }              // VCFVelocityScale in this case means Minimum cutoff
369                if (cvalue < pRegion->VCFVelocityScale) cvalue = pRegion->VCFVelocityScale;
370            }
371            else {
372                cvalue = pRegion->VCFCutoff;
373            }
374            float fco = cutoffBase * float(cvalue);
375            if (fco > 127.0f) fco = 127.0f;
376    
377      void Voice::processCutoffEvent(RTList<Event>::Iterator& itEvent) {          return fco;
         int ccvalue = itEvent->Param.CC.Value;  
         if (VCFCutoffCtrl.value == ccvalue) return;  
         VCFCutoffCtrl.value == ccvalue;  
         if (pDimRgn->VCFCutoffControllerInvert)  ccvalue = 127 - ccvalue;  
         if (ccvalue < pDimRgn->VCFVelocityScale) ccvalue = pDimRgn->VCFVelocityScale;  
         float cutoff = CutoffBase * float(ccvalue) * 0.00787402f; // (1 / 127)  
         if (cutoff > 1.0) cutoff = 1.0;  
         cutoff = exp(cutoff * FILTER_CUTOFF_COEFF) * CONFIG_FILTER_CUTOFF_MIN - CONFIG_FILTER_CUTOFF_MIN;  
         VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of fFinalCutoff next time  
         fFinalCutoff = cutoff;  
378      }      }
379    
380      void Voice::processResonanceEvent(RTList<Event>::Iterator& itEvent) {      uint8_t Voice::GetVCFCutoffCtrl() {
381          // convert absolute controller value to differential          uint8_t ctrl;
382          const int ctrldelta = itEvent->Param.CC.Value - VCFResonanceCtrl.value;          switch (pRegion->VCFCutoffController) {
383          VCFResonanceCtrl.value = itEvent->Param.CC.Value;              case ::gig::vcf_cutoff_ctrl_modwheel:
384          const float resonancedelta = (float) ctrldelta * 0.00787f; // 0.0..1.0                  ctrl = 1;
385          fFinalResonance += resonancedelta;                  break;
386          // needed for initialization of parameter              case ::gig::vcf_cutoff_ctrl_effect1:
387          VCFResonanceCtrl.fvalue = itEvent->Param.CC.Value * 0.00787f;                  ctrl = 12;
388      }                  break;
389                case ::gig::vcf_cutoff_ctrl_effect2:
390      /**                  ctrl = 13;
391       *  Synthesizes the current audio fragment for this voice.                  break;
392       *              case ::gig::vcf_cutoff_ctrl_breath:
393       *  @param Samples - number of sample points to be rendered in this audio                  ctrl = 2;
394       *                   fragment cycle                  break;
395       *  @param pSrc    - pointer to input sample data              case ::gig::vcf_cutoff_ctrl_foot:
396       *  @param Skip    - number of sample points to skip in output buffer                  ctrl = 4;
397       */                  break;
398      void Voice::Synthesize(uint Samples, sample_t* pSrc, uint Skip) {              case ::gig::vcf_cutoff_ctrl_sustainpedal:
399          RTList<Event>::Iterator itCCEvent = pEngineChannel->pEvents->first();                  ctrl = 64;
400          RTList<Event>::Iterator itNoteEvent = pEngineChannel->pMIDIKeyInfo[MIDIKey].pEvents->first();                  break;
401                                case ::gig::vcf_cutoff_ctrl_softpedal:
402          if (Skip) { // skip events that happened before this voice was triggered                  ctrl = 67;
403              while (itCCEvent && itCCEvent->FragmentPos() <= Skip) ++itCCEvent;                  break;
404              while (itNoteEvent && itNoteEvent->FragmentPos() <= Skip) ++itNoteEvent;              case ::gig::vcf_cutoff_ctrl_genpurpose7:
405          }                  ctrl = 82;
406                            break;
407          uint i = Skip;              case ::gig::vcf_cutoff_ctrl_genpurpose8:
408          while (i < Samples) {                  ctrl = 83;
409              int iSubFragmentEnd = RTMath::Min(i + CONFIG_DEFAULT_SUBFRAGMENT_SIZE, Samples);                  break;
410                            case ::gig::vcf_cutoff_ctrl_aftertouch:
411              // initialize all final synthesis parameters                  ctrl = 128;
412              fFinalPitch = PitchBase * PitchBend;                  break;
413              #if CONFIG_PROCESS_MUTED_CHANNELS              case ::gig::vcf_cutoff_ctrl_none:
414              fFinalVolume = this->Volume * this->CrossfadeVolume * (pEngineChannel->GetMute() ? 0 : pEngineChannel->GlobalVolume));              default:
415              #else                  ctrl = 0;
416              fFinalVolume = this->Volume * this->CrossfadeVolume * pEngineChannel->GlobalVolume;                  break;
             #endif  
             fFinalCutoff    = VCFCutoffCtrl.fvalue;  
             fFinalResonance = VCFResonanceCtrl.fvalue;  
               
             // process MIDI control change and pitchbend events for this subfragment  
             processCCEvents(itCCEvent, iSubFragmentEnd);  
   
             // process transition events (note on, note off & sustain pedal)  
             processTransitionEvents(itNoteEvent, iSubFragmentEnd);  
               
             // process envelope generators  
             switch (EG1.getSegmentType()) {  
                 case EGADSR::segment_lin:  
                     fFinalVolume *= EG1.processLin();  
                     break;  
                 case EGADSR::segment_exp:  
                     fFinalVolume *= EG1.processExp();  
                     break;  
                 case EGADSR::segment_end:  
                     fFinalVolume *= EG1.getLevel();  
                     break; // noop  
             }  
             switch (EG2.getSegmentType()) {  
                 case EGADSR::segment_lin:  
                     fFinalCutoff *= EG2.processLin();  
                     break;  
                 case EGADSR::segment_exp:  
                     fFinalCutoff *= EG2.processExp();  
                     break;  
                 case EGADSR::segment_end:  
                     fFinalCutoff *= EG2.getLevel();  
                     break; // noop  
             }  
             fFinalPitch *= RTMath::CentsToFreqRatio(EG3.render());  
               
             // process low frequency oscillators  
             if (bLFO1Enabled) fFinalVolume *= pLFO1->render();  
             if (bLFO2Enabled) fFinalCutoff *= pLFO2->render();  
             if (bLFO3Enabled) fFinalPitch  *= RTMath::CentsToFreqRatio(pLFO3->render());  
   
             // if filter enabled then update filter coefficients  
             if (SYNTHESIS_MODE_GET_FILTER(SynthesisMode)) {  
                 FilterLeft.SetParameters(fFinalCutoff, fFinalResonance, pEngine->SampleRate);  
                 FilterRight.SetParameters(fFinalCutoff, fFinalResonance, pEngine->SampleRate);  
             }  
   
             // how many steps do we calculate for this next subfragment  
             const int steps = iSubFragmentEnd - i;  
               
             // select the appropriate synthesis mode  
             SYNTHESIS_MODE_SET_INTERPOLATE(SynthesisMode, fFinalPitch != 1.0f);  
               
             // render audio for one subfragment  
             RunSynthesisFunction(SynthesisMode, *this, iSubFragmentEnd, pSrc, i);  
   
             // increment envelopes' positions              
             if (EG1.active()) {  
                 EG1.increment(steps);  
                 if (!EG1.toStageEndLeft()) EG1.update(EGADSR::event_stage_end, this->Pos, fFinalPitch, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
             }  
             if (EG2.active()) {  
                 EG2.increment(steps);  
                 if (!EG2.toStageEndLeft()) EG2.update(EGADSR::event_stage_end, this->Pos, fFinalPitch, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
             }  
             EG3.increment(steps);  
             if (!EG3.toEndLeft()) EG3.update(); // neutralize envelope coefficient if end reached  
417          }          }
418    
419            return ctrl;
420      }      }
421    
422      /**      uint8_t Voice::GetVCFResonanceCtrl() {
423       *  Immediately kill the voice. This method should not be used to kill          uint8_t ctrl;
424       *  a normal, active voice, because it doesn't take care of things like          switch (pRegion->VCFResonanceController) {
425       *  fading down the volume level to avoid clicks and regular processing              case ::gig::vcf_res_ctrl_genpurpose3:
426       *  until the kill event actually occured!                  ctrl = 18;
427       *                  break;
428       *  @see Kill()              case ::gig::vcf_res_ctrl_genpurpose4:
429       */                  ctrl = 19;
430      void Voice::KillImmediately() {                  break;
431          if (DiskVoice && DiskStreamRef.State != Stream::state_unused) {              case ::gig::vcf_res_ctrl_genpurpose5:
432              pDiskThread->OrderDeletionOfStream(&DiskStreamRef);                  ctrl = 80;
433          }                  break;
434          Reset();              case ::gig::vcf_res_ctrl_genpurpose6:
435      }                  ctrl = 81;
436                    break;
437      /**              case ::gig::vcf_res_ctrl_none:
438       *  Kill the voice in regular sense. Let the voice render audio until              default:
439       *  the kill event actually occured and then fade down the volume level                  ctrl = 0;
440       *  very quickly and let the voice die finally. Unlike a normal release          }
441       *  of a voice, a kill process cannot be cancalled and is therefore  
442       *  usually used for voice stealing and key group conflicts.          return ctrl;
443       *      }
      *  @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  
444    
445          if (itTriggerEvent && itKillEvent->FragmentPos() <= itTriggerEvent->FragmentPos()) return;      void Voice::TriggerEG1(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
446          this->itKillEvent = itKillEvent;          EG1.trigger(pRegion->EG1PreAttack,
447                        pRegion->EG1Attack * egInfo.Attack,
448                        pRegion->EG1Hold,
449                        pRegion->EG1Decay1 * egInfo.Decay * velrelease,
450                        pRegion->EG1Decay2 * egInfo.Decay * velrelease,
451                        pRegion->EG1InfiniteSustain,
452                        pRegion->EG1Sustain,
453                        pRegion->EG1Release * egInfo.Release * velrelease,
454                        velocityAttenuation,
455                        sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
456        }
457    
458        void Voice::TriggerEG2(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
459            EG2.trigger(uint(RgnInfo.EG2PreAttack),
460                        RgnInfo.EG2Attack * egInfo.Attack,
461                        false,
462                        RgnInfo.EG2Decay1 * egInfo.Decay * velrelease,
463                        RgnInfo.EG2Decay2 * egInfo.Decay * velrelease,
464                        RgnInfo.EG2InfiniteSustain,
465                        uint(RgnInfo.EG2Sustain),
466                        RgnInfo.EG2Release * egInfo.Release * velrelease,
467                        velocityAttenuation,
468                        sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
469        }
470    
471        void Voice::ProcessGroupEvent(RTList<Event>::Iterator& itEvent) {
472            dmsg(4,("Voice %x processGroupEvents event type=%d", this, itEvent->Type));
473    
474            // TODO: The SustainPedal condition could be wrong, maybe the
475            // check should be if this Voice is in release stage or is a
476            // release sample instead. Need to test this in GSt.
477            // -- Andreas
478            //
479            // Commented sustain pedal check out. I don't think voices of the same
480            // note should be stopped at all, because it doesn't sound naturally
481            // with a drumkit.
482            // -- Christian, 2013-01-08
483            if (itEvent->Param.Note.Key != MIDIKey /*||
484                !GetGigEngineChannel()->SustainPedal*/) {
485                dmsg(4,("Voice %x - kill", this));
486    
487                // kill the voice fast
488                pEG1->enterFadeOutStage();
489            }
490        }
491    
492        void Voice::CalculateFadeOutCoeff(float FadeOutTime, float SampleRate) {
493            EG1.CalculateFadeOutCoeff(FadeOutTime, SampleRate);
494        }
495    
496        int Voice::CalculatePan(uint8_t pan) {
497            int p;
498            // Gst behaviour: -64 and 63 are special cases
499            if (RgnInfo.Pan == -64)     p = pan * 2 - 127;
500            else if (RgnInfo.Pan == 63) p = pan * 2;
501            else                        p = pan + RgnInfo.Pan;
502    
503            if (p < 0) return 0;
504            if (p > 127) return 127;
505            return p;
506      }      }
507    
508  }} // namespace LinuxSampler::gig  }} // namespace LinuxSampler::gig
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