/[svn]/linuxsampler/trunk/src/engines/gig/Voice.cpp
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revision 783 by persson, Sun Oct 2 14:40:52 2005 UTC revision 2055 by persson, Sat Jan 30 10:30:02 2010 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 - 2010 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    
     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;
         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());  
   
         finalSynthesisParameters.filterLeft.Reset();  
         finalSynthesisParameters.filterRight.Reset();  
38      }      }
39    
40      Voice::~Voice() {      Voice::~Voice() {
         if (pLFO1) delete pLFO1;  
         if (pLFO2) delete pLFO2;  
         if (pLFO3) delete pLFO3;  
41      }      }
42    
43      void Voice::SetEngine(Engine* pEngine) {      EngineChannel* Voice::GetGigEngineChannel() {
44          this->pEngine     = pEngine;          return static_cast<EngineChannel*>(pEngineChannel);
         this->pDiskThread = pEngine->pDiskThread;  
         dmsg(6,("Voice::SetEngine()\n"));  
45      }      }
46    
47      /**      void Voice::SetEngine(LinuxSampler::Engine* pEngine) {
48       *  Initializes and triggers the voice, a disk stream will be launched if          Engine* engine = static_cast<Engine*>(pEngine);
49       *  needed.          this->pEngine     = engine;
50       *          this->pDiskThread = engine->pDiskThread;
51       *  @param pEngineChannel - engine channel on which this voice was ordered          dmsg(6,("Voice::SetEngine()\n"));
52       *  @param itNoteOnEvent  - event that caused triggering of this voice      }
      *  @param PitchBend      - MIDI detune factor (-8192 ... +8191)  
      *  @param pDimRgn        - points to the dimension region which provides sample wave(s) and articulation data  
      *  @param VoiceType      - type of this voice  
      *  @param iKeyGroup      - a value > 0 defines a key group in which this voice is member of  
      *  @returns 0 on success, a value < 0 if the voice wasn't triggered  
      *           (either due to an error or e.g. because no region is  
      *           defined for the given key)  
      */  
     int Voice::Trigger(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent, int PitchBend, ::gig::DimensionRegion* pDimRgn, type_t VoiceType, int iKeyGroup) {  
         this->pEngineChannel = pEngineChannel;  
         this->pDimRgn        = pDimRgn;  
   
         #if CONFIG_DEVMODE  
         if (itNoteOnEvent->FragmentPos() > pEngine->MaxSamplesPerCycle) { // just a sanity check for debugging  
             dmsg(1,("Voice::Trigger(): ERROR, TriggerDelay > Totalsamples\n"));  
         }  
         #endif // CONFIG_DEVMODE  
   
         Type            = VoiceType;  
         MIDIKey         = itNoteOnEvent->Param.Note.Key;  
         PlaybackState   = playback_state_init; // mark voice as triggered, but no audio rendered yet  
         Delay           = itNoteOnEvent->FragmentPos();  
         itTriggerEvent  = itNoteOnEvent;  
         itKillEvent     = Pool<Event>::Iterator();  
         KeyGroup        = iKeyGroup;  
         pSample         = pDimRgn->pSample; // sample won't change until the voice is finished  
   
         // calculate volume  
         const double velocityAttenuation = pDimRgn->GetVelocityAttenuation(itNoteOnEvent->Param.Note.Velocity);  
   
         Volume = velocityAttenuation / 32768.0f; // we downscale by 32768 to convert from int16 value range to DSP value range (which is -1.0..1.0)  
   
         Volume *= pDimRgn->SampleAttenuation;  
   
         // the volume of release triggered samples depends on note length  
         if (Type == type_release_trigger) {  
             float noteLength = float(pEngine->FrameTime + Delay -  
                                      pEngineChannel->pMIDIKeyInfo[MIDIKey].NoteOnTime) / pEngine->SampleRate;  
             float attenuation = 1 - 0.01053 * (256 >> pDimRgn->ReleaseTriggerDecay) * noteLength;  
             if (attenuation <= 0) return -1;  
             Volume *= attenuation;  
         }  
   
         // select channel mode (mono or stereo)  
         SYNTHESIS_MODE_SET_CHANNELS(SynthesisMode, pSample->Channels == 2);  
53    
54          // get starting crossfade volume level      Voice::SampleInfo Voice::GetSampleInfo() {
55          switch (pDimRgn->AttenuationController.type) {          SampleInfo si;
56              case ::gig::attenuation_ctrl_t::type_channelaftertouch:          si.SampleRate       = pSample->SamplesPerSecond;
57                  CrossfadeVolume = 1.0f; //TODO: aftertouch not supported yet          si.ChannelCount     = pSample->Channels;
58                  break;          si.FrameSize        = pSample->FrameSize;
59              case ::gig::attenuation_ctrl_t::type_velocity:          si.BitDepth         = pSample->BitDepth;
60                  CrossfadeVolume = CrossfadeAttenuation(itNoteOnEvent->Param.Note.Velocity);          si.TotalFrameCount  = pSample->SamplesTotal;
                 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;  
         }  
61    
62          PanLeft  = 1.0f - float(RTMath::Max(pDimRgn->Pan, 0)) /  63.0f;          si.HasLoops       = pRegion->SampleLoops;
63          PanRight = 1.0f - float(RTMath::Min(pDimRgn->Pan, 0)) / -64.0f;          si.LoopStart      = (si.HasLoops) ? pRegion->pSampleLoops[0].LoopStart  : 0;
64            si.LoopLength     = (si.HasLoops) ? pRegion->pSampleLoops[0].LoopLength : 0;
65            si.LoopPlayCount  = pSample->LoopPlayCount;
66            si.Unpitched      = !pRegion->PitchTrack;
67    
68          finalSynthesisParameters.dPos = pDimRgn->SampleStartOffset; // offset where we should start playback of sample (0 - 2000 sample points)          return si;
69          Pos = pDimRgn->SampleStartOffset;      }
70    
71          // Check if the sample needs disk streaming or is too short for that      Voice::RegionInfo Voice::GetRegionInfo() {
72          long cachedsamples = pSample->GetCache().Size / pSample->FrameSize;          RegionInfo ri;
73          DiskVoice          = cachedsamples < pSample->SamplesTotal;          ri.UnityNote = pRegion->UnityNote;
74            ri.FineTune  = pRegion->FineTune;
75          if (DiskVoice) { // voice to be streamed from disk          ri.Pan       = pRegion->Pan;
76              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)          ri.SampleStartOffset = pRegion->SampleStartOffset;
   
             // check if there's a loop defined which completely fits into the cached (RAM) part of the sample  
             if (pSample->Loops && pSample->LoopEnd <= MaxRAMPos) {  
                 RAMLoop            = true;  
                 loop.uiTotalCycles = pSample->LoopPlayCount;  
                 loop.uiCyclesLeft  = pSample->LoopPlayCount;  
                 loop.uiStart       = pSample->LoopStart;  
                 loop.uiEnd         = pSample->LoopEnd;  
                 loop.uiSize        = pSample->LoopSize;  
             }  
             else RAMLoop = false;  
77    
78              if (pDiskThread->OrderNewStream(&DiskStreamRef, pSample, MaxRAMPos, !RAMLoop) < 0) {          ri.EG1PreAttack        = pRegion->EG1PreAttack;
79                  dmsg(1,("Disk stream order failed!\n"));          ri.EG1Attack           = pRegion->EG1Attack;
80                  KillImmediately();          ri.EG1Hold             = pRegion->EG1Hold;
81                  return -1;          ri.EG1Decay1           = pRegion->EG1Decay1;
82              }          ri.EG1Decay2           = pRegion->EG1Decay2;
83              dmsg(4,("Disk voice launched (cached samples: %d, total Samples: %d, MaxRAMPos: %d, RAMLooping: %s)\n", cachedsamples, pSample->SamplesTotal, MaxRAMPos, (RAMLoop) ? "yes" : "no"));          ri.EG1Sustain          = pRegion->EG1Sustain;
84          }          ri.EG1InfiniteSustain  = pRegion->EG1InfiniteSustain;
85          else { // RAM only voice          ri.EG1Release          = pRegion->EG1Release;
             MaxRAMPos = cachedsamples;  
             if (pSample->Loops) {  
                 RAMLoop           = true;  
                 loop.uiCyclesLeft = pSample->LoopPlayCount;  
             }  
             else RAMLoop = false;  
             dmsg(4,("RAM only voice launched (Looping: %s)\n", (RAMLoop) ? "yes" : "no"));  
         }  
86    
87            ri.EG2PreAttack        = pRegion->EG2PreAttack;
88            ri.EG2Attack           = pRegion->EG2Attack;
89            ri.EG2Decay1           = pRegion->EG2Decay1;
90            ri.EG2Decay2           = pRegion->EG2Decay2;
91            ri.EG2Sustain          = pRegion->EG2Sustain;
92            ri.EG2InfiniteSustain  = pRegion->EG2InfiniteSustain;
93            ri.EG2Release          = pRegion->EG2Release;
94    
95          // calculate initial pitch value          ri.EG3Attack     = pRegion->EG3Attack;
96          {          ri.EG3Depth      = pRegion->EG3Depth;
97              double pitchbasecents = pDimRgn->FineTune + (int) pEngine->ScaleTuning[MIDIKey % 12];          ri.VCFEnabled    = pRegion->VCFEnabled;
98              if (pDimRgn->PitchTrack) pitchbasecents += (MIDIKey - (int) pDimRgn->UnityNote) * 100;          ri.VCFType       = pRegion->VCFType;
99              this->PitchBase = RTMath::CentsToFreqRatio(pitchbasecents) * (double(pSample->SamplesPerSecond) / double(pEngine->SampleRate));          ri.VCFResonance  = pRegion->VCFResonance;
             this->PitchBend = RTMath::CentsToFreqRatio(((double) PitchBend / 8192.0) * 200.0); // pitchbend wheel +-2 semitones = 200 cents  
         }  
   
         // the length of the decay and release curves are dependent on the velocity  
         const double velrelease = 1 / pDimRgn->GetVelocityRelease(itNoteOnEvent->Param.Note.Velocity);  
   
         // setup EG 1 (VCA EG)  
         {  
             // get current value of EG1 controller  
             double eg1controllervalue;  
             switch (pDimRgn->EG1Controller.type) {  
                 case ::gig::eg1_ctrl_t::type_none: // no controller defined  
                     eg1controllervalue = 0;  
                     break;  
                 case ::gig::eg1_ctrl_t::type_channelaftertouch:  
                     eg1controllervalue = 0; // TODO: aftertouch not yet supported  
                     break;  
                 case ::gig::eg1_ctrl_t::type_velocity:  
                     eg1controllervalue = itNoteOnEvent->Param.Note.Velocity;  
                     break;  
                 case ::gig::eg1_ctrl_t::type_controlchange: // MIDI control change controller  
                     eg1controllervalue = pEngineChannel->ControllerTable[pDimRgn->EG1Controller.controller_number];  
                     break;  
             }  
             if (pDimRgn->EG1ControllerInvert) eg1controllervalue = 127 - eg1controllervalue;  
100    
101              // calculate influence of EG1 controller on EG1's parameters          ri.ReleaseTriggerDecay = pRegion->ReleaseTriggerDecay;
             // (eg1attack is different from the others)  
             double eg1attack  = (pDimRgn->EG1ControllerAttackInfluence)  ?  
                 1 + 0.031 * (double) (pDimRgn->EG1ControllerAttackInfluence == 1 ?  
                                       1 : 1 << pDimRgn->EG1ControllerAttackInfluence) * eg1controllervalue : 1.0;  
             double eg1decay   = (pDimRgn->EG1ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pDimRgn->EG1ControllerDecayInfluence)   * eg1controllervalue : 1.0;  
             double eg1release = (pDimRgn->EG1ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pDimRgn->EG1ControllerReleaseInfluence) * eg1controllervalue : 1.0;  
   
             EG1.trigger(pDimRgn->EG1PreAttack,  
                         pDimRgn->EG1Attack * eg1attack,  
                         pDimRgn->EG1Hold,  
                         pDimRgn->EG1Decay1 * eg1decay * velrelease,  
                         pDimRgn->EG1Decay2 * eg1decay * velrelease,  
                         pDimRgn->EG1InfiniteSustain,  
                         pDimRgn->EG1Sustain,  
                         pDimRgn->EG1Release * eg1release * velrelease,  
                         velocityAttenuation,  
                         pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
         }  
102    
103            return ri;
104        }
105    
106          // setup EG 2 (VCF Cutoff EG)      Voice::InstrumentInfo Voice::GetInstrumentInfo() {
107          {          InstrumentInfo ii;
108              // get current value of EG2 controller          ii.FineTune = GetGigEngineChannel()->pInstrument->FineTune;
109              double eg2controllervalue;          ii.PitchbendRange = GetGigEngineChannel()->pInstrument->PitchbendRange;
             switch (pDimRgn->EG2Controller.type) {  
                 case ::gig::eg2_ctrl_t::type_none: // no controller defined  
                     eg2controllervalue = 0;  
                     break;  
                 case ::gig::eg2_ctrl_t::type_channelaftertouch:  
                     eg2controllervalue = 0; // TODO: aftertouch not yet supported  
                     break;  
                 case ::gig::eg2_ctrl_t::type_velocity:  
                     eg2controllervalue = itNoteOnEvent->Param.Note.Velocity;  
                     break;  
                 case ::gig::eg2_ctrl_t::type_controlchange: // MIDI control change controller  
                     eg2controllervalue = pEngineChannel->ControllerTable[pDimRgn->EG2Controller.controller_number];  
                     break;  
             }  
             if (pDimRgn->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue;  
110    
111              // calculate influence of EG2 controller on EG2's parameters          return ii;
112              double eg2attack  = (pDimRgn->EG2ControllerAttackInfluence)  ? 1 + 0.00775 * (double) (1 << pDimRgn->EG2ControllerAttackInfluence)  * eg2controllervalue : 1.0;      }
             double eg2decay   = (pDimRgn->EG2ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pDimRgn->EG2ControllerDecayInfluence)   * eg2controllervalue : 1.0;  
             double eg2release = (pDimRgn->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pDimRgn->EG2ControllerReleaseInfluence) * eg2controllervalue : 1.0;  
   
             EG2.trigger(pDimRgn->EG2PreAttack,  
                         pDimRgn->EG2Attack * eg2attack,  
                         false,  
                         pDimRgn->EG2Decay1 * eg2decay * velrelease,  
                         pDimRgn->EG2Decay2 * eg2decay * velrelease,  
                         pDimRgn->EG2InfiniteSustain,  
                         pDimRgn->EG2Sustain,  
                         pDimRgn->EG2Release * eg2release * velrelease,  
                         velocityAttenuation,  
                         pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
         }  
113    
114        double Voice::GetSampleAttenuation() {
115            return pRegion->SampleAttenuation;
116        }
117    
118          // setup EG 3 (VCO EG)      double Voice::GetVelocityAttenuation(uint8_t MIDIKeyVelocity) {
119          {          return pRegion->GetVelocityAttenuation(MIDIKeyVelocity);
120            double eg3depth = RTMath::CentsToFreqRatio(pDimRgn->EG3Depth);      }
           EG3.trigger(eg3depth, pDimRgn->EG3Attack, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
         }  
121    
122        double Voice::GetVelocityRelease(uint8_t MIDIKeyVelocity) {
123            return pRegion->GetVelocityRelease(MIDIKeyVelocity);
124        }
125    
126          // setup LFO 1 (VCA LFO)      void Voice::ProcessCCEvent(RTList<Event>::Iterator& itEvent) {
127          {          if (itEvent->Type == Event::type_control_change && itEvent->Param.CC.Controller) { // if (valid) MIDI control change event
128              uint16_t lfo1_internal_depth;              if (pRegion->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&
129              switch (pDimRgn->LFO1Controller) {                  itEvent->Param.CC.Controller == pRegion->AttenuationController.controller_number) {
130                  case ::gig::lfo1_ctrl_internal:                  CrossfadeSmoother.update(AbstractEngine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.CC.Value)]);
                     lfo1_internal_depth  = pDimRgn->LFO1InternalDepth;  
                     pLFO1->ExtController = 0; // no external controller  
                     bLFO1Enabled         = (lfo1_internal_depth > 0);  
                     break;  
                 case ::gig::lfo1_ctrl_modwheel:  
                     lfo1_internal_depth  = 0;  
                     pLFO1->ExtController = 1; // MIDI controller 1  
                     bLFO1Enabled         = (pDimRgn->LFO1ControlDepth > 0);  
                     break;  
                 case ::gig::lfo1_ctrl_breath:  
                     lfo1_internal_depth  = 0;  
                     pLFO1->ExtController = 2; // MIDI controller 2  
                     bLFO1Enabled         = (pDimRgn->LFO1ControlDepth > 0);  
                     break;  
                 case ::gig::lfo1_ctrl_internal_modwheel:  
                     lfo1_internal_depth  = pDimRgn->LFO1InternalDepth;  
                     pLFO1->ExtController = 1; // MIDI controller 1  
                     bLFO1Enabled         = (lfo1_internal_depth > 0 || pDimRgn->LFO1ControlDepth > 0);  
                     break;  
                 case ::gig::lfo1_ctrl_internal_breath:  
                     lfo1_internal_depth  = pDimRgn->LFO1InternalDepth;  
                     pLFO1->ExtController = 2; // MIDI controller 2  
                     bLFO1Enabled         = (lfo1_internal_depth > 0 || pDimRgn->LFO1ControlDepth > 0);  
                     break;  
                 default:  
                     lfo1_internal_depth  = 0;  
                     pLFO1->ExtController = 0; // no external controller  
                     bLFO1Enabled         = false;  
131              }              }
             if (bLFO1Enabled) pLFO1->trigger(pDimRgn->LFO1Frequency,  
                                              start_level_max,  
                                              lfo1_internal_depth,  
                                              pDimRgn->LFO1ControlDepth,  
                                              pDimRgn->LFO1FlipPhase,  
                                              pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
132          }          }
133        }
134    
135        void Voice::ProcessCutoffEvent(RTList<Event>::Iterator& itEvent) {
136            int ccvalue = itEvent->Param.CC.Value;
137            if (VCFCutoffCtrl.value == ccvalue) return;
138            VCFCutoffCtrl.value == ccvalue;
139            if (pRegion->VCFCutoffControllerInvert)  ccvalue = 127 - ccvalue;
140            if (ccvalue < pRegion->VCFVelocityScale) ccvalue = pRegion->VCFVelocityScale;
141            float cutoff = CutoffBase * float(ccvalue);
142            if (cutoff > 127.0f) cutoff = 127.0f;
143    
144          // setup LFO 2 (VCF Cutoff LFO)          VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of fFinalCutoff next time
145          {          fFinalCutoff = cutoff;
146              uint16_t lfo2_internal_depth;      }
             switch (pDimRgn->LFO2Controller) {  
                 case ::gig::lfo2_ctrl_internal:  
                     lfo2_internal_depth  = pDimRgn->LFO2InternalDepth;  
                     pLFO2->ExtController = 0; // no external controller  
                     bLFO2Enabled         = (lfo2_internal_depth > 0);  
                     break;  
                 case ::gig::lfo2_ctrl_modwheel:  
                     lfo2_internal_depth  = 0;  
                     pLFO2->ExtController = 1; // MIDI controller 1  
                     bLFO2Enabled         = (pDimRgn->LFO2ControlDepth > 0);  
                     break;  
                 case ::gig::lfo2_ctrl_foot:  
                     lfo2_internal_depth  = 0;  
                     pLFO2->ExtController = 4; // MIDI controller 4  
                     bLFO2Enabled         = (pDimRgn->LFO2ControlDepth > 0);  
                     break;  
                 case ::gig::lfo2_ctrl_internal_modwheel:  
                     lfo2_internal_depth  = pDimRgn->LFO2InternalDepth;  
                     pLFO2->ExtController = 1; // MIDI controller 1  
                     bLFO2Enabled         = (lfo2_internal_depth > 0 || pDimRgn->LFO2ControlDepth > 0);  
                     break;  
                 case ::gig::lfo2_ctrl_internal_foot:  
                     lfo2_internal_depth  = pDimRgn->LFO2InternalDepth;  
                     pLFO2->ExtController = 4; // MIDI controller 4  
                     bLFO2Enabled         = (lfo2_internal_depth > 0 || pDimRgn->LFO2ControlDepth > 0);  
                     break;  
                 default:  
                     lfo2_internal_depth  = 0;  
                     pLFO2->ExtController = 0; // no external controller  
                     bLFO2Enabled         = false;  
             }  
             if (bLFO2Enabled) pLFO2->trigger(pDimRgn->LFO2Frequency,  
                                              start_level_max,  
                                              lfo2_internal_depth,  
                                              pDimRgn->LFO2ControlDepth,  
                                              pDimRgn->LFO2FlipPhase,  
                                              pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
         }  
   
147    
148          // setup LFO 3 (VCO LFO)      double Voice::CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity) {
149          {          float crossfadeVolume;
150              uint16_t lfo3_internal_depth;          switch (pRegion->AttenuationController.type) {
151              switch (pDimRgn->LFO3Controller) {              case ::gig::attenuation_ctrl_t::type_channelaftertouch:
152                  case ::gig::lfo3_ctrl_internal:                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[128])];
153                      lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;                  break;
154                      pLFO3->ExtController = 0; // no external controller              case ::gig::attenuation_ctrl_t::type_velocity:
155                      bLFO3Enabled         = (lfo3_internal_depth > 0);                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(MIDIKeyVelocity)];
156                      break;                  break;
157                  case ::gig::lfo3_ctrl_modwheel:              case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate
158                      lfo3_internal_depth  = 0;                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[pRegion->AttenuationController.controller_number])];
159                      pLFO3->ExtController = 1; // MIDI controller 1                  break;
160                      bLFO3Enabled         = (pDimRgn->LFO3ControlDepth > 0);              case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined
161                      break;              default:
162                  case ::gig::lfo3_ctrl_aftertouch:                  crossfadeVolume = 1.0f;
                     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);  
163          }          }
164    
165            return crossfadeVolume;
166        }
167    
168          #if CONFIG_FORCE_FILTER      double Voice::GetEG1ControllerValue(uint8_t MIDIKeyVelocity) {
169          const bool bUseFilter = true;          double eg1controllervalue = 0;
170          #else // use filter only if instrument file told so          switch (pRegion->EG1Controller.type) {
171          const bool bUseFilter = pDimRgn->VCFEnabled;              case ::gig::eg1_ctrl_t::type_none: // no controller defined
172          #endif // CONFIG_FORCE_FILTER                  eg1controllervalue = 0;
173          SYNTHESIS_MODE_SET_FILTER(SynthesisMode, bUseFilter);                  break;
174          if (bUseFilter) {              case ::gig::eg1_ctrl_t::type_channelaftertouch:
175              #ifdef CONFIG_OVERRIDE_CUTOFF_CTRL                  eg1controllervalue = GetGigEngineChannel()->ControllerTable[128];
176              VCFCutoffCtrl.controller = CONFIG_OVERRIDE_CUTOFF_CTRL;                  break;
177              #else // use the one defined in the instrument file              case ::gig::eg1_ctrl_t::type_velocity:
178              switch (pDimRgn->VCFCutoffController) {                  eg1controllervalue = MIDIKeyVelocity;
179                  case ::gig::vcf_cutoff_ctrl_modwheel:                  break;
180                      VCFCutoffCtrl.controller = 1;              case ::gig::eg1_ctrl_t::type_controlchange: // MIDI control change controller
181                      break;                  eg1controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG1Controller.controller_number];
182                  case ::gig::vcf_cutoff_ctrl_effect1:                  break;
183                      VCFCutoffCtrl.controller = 12;          }
184                      break;          if (pRegion->EG1ControllerInvert) eg1controllervalue = 127 - eg1controllervalue;
                 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  
185    
186              #ifdef CONFIG_OVERRIDE_RESONANCE_CTRL          return eg1controllervalue;
187              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  
188    
189              #ifndef CONFIG_OVERRIDE_FILTER_TYPE      Voice::EGInfo Voice::CalculateEG1ControllerInfluence(double eg1ControllerValue) {
190              finalSynthesisParameters.filterLeft.SetType(pDimRgn->VCFType);          EGInfo eg;
191              finalSynthesisParameters.filterRight.SetType(pDimRgn->VCFType);          // (eg1attack is different from the others)
192              #else // override filter type          eg.Attack  = (pRegion->EG1ControllerAttackInfluence)  ?
193              FilterLeft.SetType(CONFIG_OVERRIDE_FILTER_TYPE);              1 + 0.031 * (double) (pRegion->EG1ControllerAttackInfluence == 1 ?
194              FilterRight.SetType(CONFIG_OVERRIDE_FILTER_TYPE);                                    1 : 1 << pRegion->EG1ControllerAttackInfluence) * eg1ControllerValue : 1.0;
195              #endif // CONFIG_OVERRIDE_FILTER_TYPE          eg.Decay   = (pRegion->EG1ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerDecayInfluence)   * eg1ControllerValue : 1.0;
196            eg.Release = (pRegion->EG1ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerReleaseInfluence) * eg1ControllerValue : 1.0;
             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;  
197    
198              int cvalue;          return eg;
199              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)  
200    
201              VCFCutoffCtrl.fvalue    = cutoff - CONFIG_FILTER_CUTOFF_MIN;      double Voice::GetEG2ControllerValue(uint8_t MIDIKeyVelocity) {
202              VCFResonanceCtrl.fvalue = resonance;          double eg2controllervalue = 0;
203          }          switch (pRegion->EG2Controller.type) {
204          else {              case ::gig::eg2_ctrl_t::type_none: // no controller defined
205              VCFCutoffCtrl.controller    = 0;                  eg2controllervalue = 0;
206              VCFResonanceCtrl.controller = 0;                  break;
207                case ::gig::eg2_ctrl_t::type_channelaftertouch:
208                    eg2controllervalue = GetGigEngineChannel()->ControllerTable[128];
209                    break;
210                case ::gig::eg2_ctrl_t::type_velocity:
211                    eg2controllervalue = MIDIKeyVelocity;
212                    break;
213                case ::gig::eg2_ctrl_t::type_controlchange: // MIDI control change controller
214                    eg2controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG2Controller.controller_number];
215                    break;
216          }          }
217            if (pRegion->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue;
218    
219          return 0; // success          return eg2controllervalue;
220      }      }
221    
222      /**      Voice::EGInfo Voice::CalculateEG2ControllerInfluence(double eg2ControllerValue) {
223       *  Renders the audio data for this voice for the current audio fragment.          EGInfo eg;
224       *  The sample input data can either come from RAM (cached sample or sample          eg.Attack  = (pRegion->EG2ControllerAttackInfluence)  ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerAttackInfluence)  * eg2ControllerValue : 1.0;
225       *  part) or directly from disk. The output signal will be rendered by          eg.Decay   = (pRegion->EG2ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerDecayInfluence)   * eg2ControllerValue : 1.0;
226       *  resampling / interpolation. If this voice is a disk streaming voice and          eg.Release = (pRegion->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerReleaseInfluence) * eg2ControllerValue : 1.0;
227       *  the voice completely played back the cached RAM part of the sample, it  
228       *  will automatically switch to disk playback for the next RenderAudio()          return eg;
      *  call.  
      *  
      *  @param Samples - number of samples to be rendered in this audio fragment cycle  
      */  
     void Voice::Render(uint Samples) {  
   
         // select default values for synthesis mode bits  
         SYNTHESIS_MODE_SET_LOOP(SynthesisMode, false);  
   
         switch (this->PlaybackState) {  
   
             case playback_state_init:  
                 this->PlaybackState = playback_state_ram; // we always start playback from RAM cache and switch then to disk if needed  
                 // no break - continue with playback_state_ram  
   
             case playback_state_ram: {  
                     if (RAMLoop) SYNTHESIS_MODE_SET_LOOP(SynthesisMode, true); // enable looping  
   
                     // render current fragment  
                     Synthesize(Samples, (sample_t*) pSample->GetCache().pStart, Delay);  
   
                     if (DiskVoice) {  
                         // check if we reached the allowed limit of the sample RAM cache  
                         if (finalSynthesisParameters.dPos > MaxRAMPos) {  
                             dmsg(5,("Voice: switching to disk playback (Pos=%f)\n", finalSynthesisParameters.dPos));  
                             this->PlaybackState = playback_state_disk;  
                         }  
                     } else if (finalSynthesisParameters.dPos >= pSample->GetCache().Size / pSample->FrameSize) {  
                         this->PlaybackState = playback_state_end;  
                     }  
                 }  
                 break;  
   
             case playback_state_disk: {  
                     if (!DiskStreamRef.pStream) {  
                         // check if the disk thread created our ordered disk stream in the meantime  
                         DiskStreamRef.pStream = pDiskThread->AskForCreatedStream(DiskStreamRef.OrderID);  
                         if (!DiskStreamRef.pStream) {  
                             std::cout << stderr << "Disk stream not available in time!" << std::endl << std::flush;  
                             KillImmediately();  
                             return;  
                         }  
                         DiskStreamRef.pStream->IncrementReadPos(pSample->Channels * (int(finalSynthesisParameters.dPos) - MaxRAMPos));  
                         finalSynthesisParameters.dPos -= int(finalSynthesisParameters.dPos);  
                         RealSampleWordsLeftToRead = -1; // -1 means no silence has been added yet  
                     }  
   
                     const int sampleWordsLeftToRead = DiskStreamRef.pStream->GetReadSpace();  
   
                     // add silence sample at the end if we reached the end of the stream (for the interpolator)  
                     if (DiskStreamRef.State == Stream::state_end) {  
                         const int maxSampleWordsPerCycle = (pEngine->MaxSamplesPerCycle << CONFIG_MAX_PITCH) * pSample->Channels + 6; // +6 for the interpolator algorithm  
                         if (sampleWordsLeftToRead <= maxSampleWordsPerCycle) {  
                             // remember how many sample words there are before any silence has been added  
                             if (RealSampleWordsLeftToRead < 0) RealSampleWordsLeftToRead = sampleWordsLeftToRead;  
                             DiskStreamRef.pStream->WriteSilence(maxSampleWordsPerCycle - sampleWordsLeftToRead);  
                         }  
                     }  
   
                     sample_t* ptr = DiskStreamRef.pStream->GetReadPtr(); // get the current read_ptr within the ringbuffer where we read the samples from  
   
                     // render current audio fragment  
                     Synthesize(Samples, ptr, Delay);  
   
                     const int iPos = (int) finalSynthesisParameters.dPos;  
                     const int readSampleWords = iPos * pSample->Channels; // amount of sample words actually been read  
                     DiskStreamRef.pStream->IncrementReadPos(readSampleWords);  
                     finalSynthesisParameters.dPos -= iPos; // just keep fractional part of playback position  
   
                     // change state of voice to 'end' if we really reached the end of the sample data  
                     if (RealSampleWordsLeftToRead >= 0) {  
                         RealSampleWordsLeftToRead -= readSampleWords;  
                         if (RealSampleWordsLeftToRead <= 0) this->PlaybackState = playback_state_end;  
                     }  
                 }  
                 break;  
   
             case playback_state_end:  
                 std::cerr << "gig::Voice::Render(): entered with playback_state_end, this is a bug!\n" << std::flush;  
                 break;  
         }  
   
         // Reset delay  
         Delay = 0;  
   
         itTriggerEvent = Pool<Event>::Iterator();  
   
         // If sample stream or release stage finished, kill the voice  
         if (PlaybackState == playback_state_end || EG1.getSegmentType() == EGADSR::segment_end) KillImmediately();  
     }  
   
     /**  
      *  Resets voice variables. Should only be called if rendering process is  
      *  suspended / not running.  
      */  
     void Voice::Reset() {  
         finalSynthesisParameters.filterLeft.Reset();  
         finalSynthesisParameters.filterRight.Reset();  
         DiskStreamRef.pStream = NULL;  
         DiskStreamRef.hStream = 0;  
         DiskStreamRef.State   = Stream::state_unused;  
         DiskStreamRef.OrderID = 0;  
         PlaybackState = playback_state_end;  
         itTriggerEvent = Pool<Event>::Iterator();  
         itKillEvent    = Pool<Event>::Iterator();  
     }  
   
     /**  
      * Process given list of MIDI note on, note off and sustain pedal events  
      * for the given time.  
      *  
      * @param itEvent - iterator pointing to the next event to be processed  
      * @param End     - youngest time stamp where processing should be stopped  
      */  
     void Voice::processTransitionEvents(RTList<Event>::Iterator& itEvent, uint End) {  
         for (; itEvent && itEvent->FragmentPos() <= End; ++itEvent) {  
             if (itEvent->Type == Event::type_release) {  
                 EG1.update(EGADSR::event_release, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
                 EG2.update(EGADSR::event_release, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
             } else if (itEvent->Type == Event::type_cancel_release) {  
                 EG1.update(EGADSR::event_cancel_release, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
                 EG2.update(EGADSR::event_cancel_release, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
             }  
         }  
229      }      }
230    
231      /**      void Voice::InitLFO1() {
232       * Process given list of MIDI control change and pitch bend events for          uint16_t lfo1_internal_depth;
233       * the given time.          switch (pRegion->LFO1Controller) {
234       *              case ::gig::lfo1_ctrl_internal:
235       * @param itEvent - iterator pointing to the next event to be processed                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
236       * @param End     - youngest time stamp where processing should be stopped                  pLFO1->ExtController = 0; // no external controller
237       */                  bLFO1Enabled         = (lfo1_internal_depth > 0);
238      void Voice::processCCEvents(RTList<Event>::Iterator& itEvent, uint End) {                  break;
239          for (; itEvent && itEvent->FragmentPos() <= End; ++itEvent) {              case ::gig::lfo1_ctrl_modwheel:
240              if (itEvent->Type == Event::type_control_change &&                  lfo1_internal_depth  = 0;
241                  itEvent->Param.CC.Controller) { // if (valid) MIDI control change event                  pLFO1->ExtController = 1; // MIDI controller 1
242                  if (itEvent->Param.CC.Controller == VCFCutoffCtrl.controller) {                  bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
243                      processCutoffEvent(itEvent);                  break;
244                  }              case ::gig::lfo1_ctrl_breath:
245                  if (itEvent->Param.CC.Controller == VCFResonanceCtrl.controller) {                  lfo1_internal_depth  = 0;
246                      processResonanceEvent(itEvent);                  pLFO1->ExtController = 2; // MIDI controller 2
247                  }                  bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
248                  if (itEvent->Param.CC.Controller == pLFO1->ExtController) {                  break;
249                      pLFO1->update(itEvent->Param.CC.Value);              case ::gig::lfo1_ctrl_internal_modwheel:
250                  }                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
251                  if (itEvent->Param.CC.Controller == pLFO2->ExtController) {                  pLFO1->ExtController = 1; // MIDI controller 1
252                      pLFO2->update(itEvent->Param.CC.Value);                  bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
253                  }                  break;
254                  if (itEvent->Param.CC.Controller == pLFO3->ExtController) {              case ::gig::lfo1_ctrl_internal_breath:
255                      pLFO3->update(itEvent->Param.CC.Value);                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
256                  }                  pLFO1->ExtController = 2; // MIDI controller 2
257                  if (pDimRgn->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&                  bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
258                      itEvent->Param.CC.Controller == pDimRgn->AttenuationController.controller_number) {                  break;
259                      processCrossFadeEvent(itEvent);              default:
260                  }                  lfo1_internal_depth  = 0;
261              } else if (itEvent->Type == Event::type_pitchbend) { // if pitch bend event                  pLFO1->ExtController = 0; // no external controller
262                  processPitchEvent(itEvent);                  bLFO1Enabled         = false;
263              }          }
264            if (bLFO1Enabled) {
265                pLFO1->trigger(pRegion->LFO1Frequency,
266                               start_level_min,
267                               lfo1_internal_depth,
268                               pRegion->LFO1ControlDepth,
269                               pRegion->LFO1FlipPhase,
270                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
271                pLFO1->update(pLFO1->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO1->ExtController] : 0);
272          }          }
273      }      }
274    
275      void Voice::processPitchEvent(RTList<Event>::Iterator& itEvent) {      void Voice::InitLFO2() {
276          const float pitch = RTMath::CentsToFreqRatio(((double) itEvent->Param.Pitch.Pitch / 8192.0) * 200.0); // +-two semitones = +-200 cents          uint16_t lfo2_internal_depth;
277          finalSynthesisParameters.fFinalPitch *= pitch;          switch (pRegion->LFO2Controller) {
278          PitchBend = pitch;              case ::gig::lfo2_ctrl_internal:
279      }                  lfo2_internal_depth  = pRegion->LFO2InternalDepth;
280                    pLFO2->ExtController = 0; // no external controller
281      void Voice::processCrossFadeEvent(RTList<Event>::Iterator& itEvent) {                  bLFO2Enabled         = (lfo2_internal_depth > 0);
282          CrossfadeVolume = CrossfadeAttenuation(itEvent->Param.CC.Value);                  break;
283          #if CONFIG_PROCESS_MUTED_CHANNELS              case ::gig::lfo2_ctrl_modwheel:
284          const float effectiveVolume = CrossfadeVolume * Volume * (pEngineChannel->GetMute() ? 0 : pEngineChannel->GlobalVolume);                  lfo2_internal_depth  = 0;
285          #else                  pLFO2->ExtController = 1; // MIDI controller 1
286          const float effectiveVolume = CrossfadeVolume * Volume * pEngineChannel->GlobalVolume;                  bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
287          #endif                  break;
288          fFinalVolume = effectiveVolume;              case ::gig::lfo2_ctrl_foot:
289                    lfo2_internal_depth  = 0;
290                    pLFO2->ExtController = 4; // MIDI controller 4
291                    bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
292                    break;
293                case ::gig::lfo2_ctrl_internal_modwheel:
294                    lfo2_internal_depth  = pRegion->LFO2InternalDepth;
295                    pLFO2->ExtController = 1; // MIDI controller 1
296                    bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
297                    break;
298                case ::gig::lfo2_ctrl_internal_foot:
299                    lfo2_internal_depth  = pRegion->LFO2InternalDepth;
300                    pLFO2->ExtController = 4; // MIDI controller 4
301                    bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
302                    break;
303                default:
304                    lfo2_internal_depth  = 0;
305                    pLFO2->ExtController = 0; // no external controller
306                    bLFO2Enabled         = false;
307            }
308            if (bLFO2Enabled) {
309                pLFO2->trigger(pRegion->LFO2Frequency,
310                               start_level_max,
311                               lfo2_internal_depth,
312                               pRegion->LFO2ControlDepth,
313                               pRegion->LFO2FlipPhase,
314                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
315                pLFO2->update(pLFO2->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO2->ExtController] : 0);
316            }
317      }      }
318    
319      void Voice::processCutoffEvent(RTList<Event>::Iterator& itEvent) {      void Voice::InitLFO3() {
320          int ccvalue = itEvent->Param.CC.Value;          uint16_t lfo3_internal_depth;
321          if (VCFCutoffCtrl.value == ccvalue) return;          switch (pRegion->LFO3Controller) {
322          VCFCutoffCtrl.value == ccvalue;              case ::gig::lfo3_ctrl_internal:
323          if (pDimRgn->VCFCutoffControllerInvert)  ccvalue = 127 - ccvalue;                  lfo3_internal_depth  = pRegion->LFO3InternalDepth;
324          if (ccvalue < pDimRgn->VCFVelocityScale) ccvalue = pDimRgn->VCFVelocityScale;                  pLFO3->ExtController = 0; // no external controller
325          float cutoff = CutoffBase * float(ccvalue) * 0.00787402f; // (1 / 127)                  bLFO3Enabled         = (lfo3_internal_depth > 0);
326          if (cutoff > 1.0) cutoff = 1.0;                  break;
327          cutoff = exp(cutoff * FILTER_CUTOFF_COEFF) * CONFIG_FILTER_CUTOFF_MIN - CONFIG_FILTER_CUTOFF_MIN;              case ::gig::lfo3_ctrl_modwheel:
328          VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of fFinalCutoff next time                  lfo3_internal_depth  = 0;
329          fFinalCutoff = cutoff;                  pLFO3->ExtController = 1; // MIDI controller 1
330                    bLFO3Enabled         = (pRegion->LFO3ControlDepth > 0);
331                    break;
332                case ::gig::lfo3_ctrl_aftertouch:
333                    lfo3_internal_depth  = 0;
334                    pLFO3->ExtController = 128;
335                    bLFO3Enabled         = true;
336                    break;
337                case ::gig::lfo3_ctrl_internal_modwheel:
338                    lfo3_internal_depth  = pRegion->LFO3InternalDepth;
339                    pLFO3->ExtController = 1; // MIDI controller 1
340                    bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
341                    break;
342                case ::gig::lfo3_ctrl_internal_aftertouch:
343                    lfo3_internal_depth  = pRegion->LFO3InternalDepth;
344                    pLFO1->ExtController = 128;
345                    bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
346                    break;
347                default:
348                    lfo3_internal_depth  = 0;
349                    pLFO3->ExtController = 0; // no external controller
350                    bLFO3Enabled         = false;
351            }
352            if (bLFO3Enabled) {
353                pLFO3->trigger(pRegion->LFO3Frequency,
354                               start_level_mid,
355                               lfo3_internal_depth,
356                               pRegion->LFO3ControlDepth,
357                               false,
358                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
359                pLFO3->update(pLFO3->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO3->ExtController] : 0);
360            }
361      }      }
362    
363      void Voice::processResonanceEvent(RTList<Event>::Iterator& itEvent) {      float Voice::CalculateCutoffBase(uint8_t MIDIKeyVelocity) {
364          // convert absolute controller value to differential          float cutoff = pRegion->GetVelocityCutoff(MIDIKeyVelocity);
365          const int ctrldelta = itEvent->Param.CC.Value - VCFResonanceCtrl.value;          if (pRegion->VCFKeyboardTracking) {
366          VCFResonanceCtrl.value = itEvent->Param.CC.Value;              cutoff *= exp((MIDIKeyVelocity - pRegion->VCFKeyboardTrackingBreakpoint) * 0.057762265f); // (ln(2) / 12)
367          const float resonancedelta = (float) ctrldelta * 0.00787f; // 0.0..1.0          }
368          fFinalResonance += resonancedelta;          return cutoff;
369          // needed for initialization of parameter      }
370          VCFResonanceCtrl.fvalue = itEvent->Param.CC.Value * 0.00787f;  
371      }      float Voice::CalculateFinalCutoff(float cutoffBase) {
372            int cvalue;
373      /**          if (VCFCutoffCtrl.controller) {
374       *  Synthesizes the current audio fragment for this voice.              cvalue = GetGigEngineChannel()->ControllerTable[VCFCutoffCtrl.controller];
375       *              if (pRegion->VCFCutoffControllerInvert) cvalue = 127 - cvalue;
376       *  @param Samples - number of sample points to be rendered in this audio              // VCFVelocityScale in this case means Minimum cutoff
377       *                   fragment cycle              if (cvalue < pRegion->VCFVelocityScale) cvalue = pRegion->VCFVelocityScale;
378       *  @param pSrc    - pointer to input sample data          }
379       *  @param Skip    - number of sample points to skip in output buffer          else {
380       */              cvalue = pRegion->VCFCutoff;
381      void Voice::Synthesize(uint Samples, sample_t* pSrc, uint Skip) {          }
382          finalSynthesisParameters.pOutLeft  = &pEngineChannel->pOutputLeft[Skip];          float fco = cutoffBase * float(cvalue);
383          finalSynthesisParameters.pOutRight = &pEngineChannel->pOutputRight[Skip];          if (fco > 127.0f) fco = 127.0f;
         finalSynthesisParameters.pSrc      = pSrc;  
   
         RTList<Event>::Iterator itCCEvent = pEngineChannel->pEvents->first();  
         RTList<Event>::Iterator itNoteEvent = pEngineChannel->pMIDIKeyInfo[MIDIKey].pEvents->first();  
   
         if (Skip) { // skip events that happened before this voice was triggered  
             while (itCCEvent && itCCEvent->FragmentPos() <= Skip) ++itCCEvent;  
             while (itNoteEvent && itNoteEvent->FragmentPos() <= Skip) ++itNoteEvent;  
         }  
   
         uint i = Skip;  
         while (i < Samples) {  
             int iSubFragmentEnd = RTMath::Min(i + CONFIG_DEFAULT_SUBFRAGMENT_SIZE, Samples);  
   
             // initialize all final synthesis parameters  
             finalSynthesisParameters.fFinalPitch = PitchBase * PitchBend;  
             #if CONFIG_PROCESS_MUTED_CHANNELS  
             fFinalVolume = this->Volume * this->CrossfadeVolume * (pEngineChannel->GetMute() ? 0 : pEngineChannel->GlobalVolume);  
             #else  
             fFinalVolume = this->Volume * this->CrossfadeVolume * pEngineChannel->GlobalVolume;  
             #endif  
             fFinalCutoff    = VCFCutoffCtrl.fvalue;  
             fFinalResonance = VCFResonanceCtrl.fvalue;  
   
             // process MIDI control change and pitchbend events for this subfragment  
             processCCEvents(itCCEvent, iSubFragmentEnd);  
   
             // process transition events (note on, note off & sustain pedal)  
             processTransitionEvents(itNoteEvent, iSubFragmentEnd);  
   
             // process envelope generators  
             switch (EG1.getSegmentType()) {  
                 case EGADSR::segment_lin:  
                     fFinalVolume *= EG1.processLin();  
                     break;  
                 case EGADSR::segment_exp:  
                     fFinalVolume *= EG1.processExp();  
                     break;  
                 case EGADSR::segment_end:  
                     fFinalVolume *= EG1.getLevel();  
                     break; // noop  
             }  
             switch (EG2.getSegmentType()) {  
                 case EGADSR::segment_lin:  
                     fFinalCutoff *= EG2.processLin();  
                     break;  
                 case EGADSR::segment_exp:  
                     fFinalCutoff *= EG2.processExp();  
                     break;  
                 case EGADSR::segment_end:  
                     fFinalCutoff *= EG2.getLevel();  
                     break; // noop  
             }  
             if (EG3.active()) finalSynthesisParameters.fFinalPitch *= RTMath::CentsToFreqRatio(EG3.render());  
   
             // 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, fFinalResonance, pEngine->SampleRate);  
                 finalSynthesisParameters.filterRight.SetParameters(fFinalCutoff, 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.fFinalVolumeLeft  = fFinalVolume * PanLeft;  
             finalSynthesisParameters.fFinalVolumeRight = fFinalVolume * PanRight;  
             finalSynthesisParameters.uiToGo            = iSubFragmentEnd - i;  
   
             // render audio for one subfragment  
             RunSynthesisFunction(SynthesisMode, &finalSynthesisParameters, &loop);  
   
             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);  
                 }  
384    
385                  EG1.increment(1);          return fco;
386                  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  
387    
388              Pos = newPos;      uint8_t Voice::GetVCFCutoffCtrl() {
389              i = iSubFragmentEnd;          uint8_t ctrl;
390            switch (pRegion->VCFCutoffController) {
391                case ::gig::vcf_cutoff_ctrl_modwheel:
392                    ctrl = 1;
393                    break;
394                case ::gig::vcf_cutoff_ctrl_effect1:
395                    ctrl = 12;
396                    break;
397                case ::gig::vcf_cutoff_ctrl_effect2:
398                    ctrl = 13;
399                    break;
400                case ::gig::vcf_cutoff_ctrl_breath:
401                    ctrl = 2;
402                    break;
403                case ::gig::vcf_cutoff_ctrl_foot:
404                    ctrl = 4;
405                    break;
406                case ::gig::vcf_cutoff_ctrl_sustainpedal:
407                    ctrl = 64;
408                    break;
409                case ::gig::vcf_cutoff_ctrl_softpedal:
410                    ctrl = 67;
411                    break;
412                case ::gig::vcf_cutoff_ctrl_genpurpose7:
413                    ctrl = 82;
414                    break;
415                case ::gig::vcf_cutoff_ctrl_genpurpose8:
416                    ctrl = 83;
417                    break;
418                case ::gig::vcf_cutoff_ctrl_aftertouch:
419                    ctrl = 128;
420                    break;
421                case ::gig::vcf_cutoff_ctrl_none:
422                default:
423                    ctrl = 0;
424                    break;
425          }          }
426    
427            return ctrl;
428      }      }
429    
430      /**      uint8_t Voice::GetVCFResonanceCtrl() {
431       *  Immediately kill the voice. This method should not be used to kill          uint8_t ctrl;
432       *  a normal, active voice, because it doesn't take care of things like          switch (pRegion->VCFResonanceController) {
433       *  fading down the volume level to avoid clicks and regular processing              case ::gig::vcf_res_ctrl_genpurpose3:
434       *  until the kill event actually occured!                  ctrl = 18;
435       *                  break;
436       *  @see Kill()              case ::gig::vcf_res_ctrl_genpurpose4:
437       */                  ctrl = 19;
438      void Voice::KillImmediately() {                  break;
439          if (DiskVoice && DiskStreamRef.State != Stream::state_unused) {              case ::gig::vcf_res_ctrl_genpurpose5:
440              pDiskThread->OrderDeletionOfStream(&DiskStreamRef);                  ctrl = 80;
441          }                  break;
442          Reset();              case ::gig::vcf_res_ctrl_genpurpose6:
443      }                  ctrl = 81;
444                    break;
445      /**              case ::gig::vcf_res_ctrl_none:
446       *  Kill the voice in regular sense. Let the voice render audio until              default:
447       *  the kill event actually occured and then fade down the volume level                  ctrl = 0;
448       *  very quickly and let the voice die finally. Unlike a normal release          }
      *  of a voice, a kill process cannot be cancalled and is therefore  
      *  usually used for voice stealing and key group conflicts.  
      *  
      *  @param itKillEvent - event which caused the voice to be killed  
      */  
     void Voice::Kill(Pool<Event>::Iterator& itKillEvent) {  
         #if CONFIG_DEVMODE  
         if (!itKillEvent) dmsg(1,("gig::Voice::Kill(): ERROR, !itKillEvent !!!\n"));  
         if (itKillEvent && !itKillEvent.isValid()) dmsg(1,("gig::Voice::Kill(): ERROR, itKillEvent invalid !!!\n"));  
         #endif // CONFIG_DEVMODE  
449    
450          if (itTriggerEvent && itKillEvent->FragmentPos() <= itTriggerEvent->FragmentPos()) return;          return ctrl;
         this->itKillEvent = itKillEvent;  
451      }      }
452    
453        void Voice::TriggerEG1(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
454            EG1.trigger(uint(RgnInfo.EG1PreAttack),
455                        RgnInfo.EG1Attack * egInfo.Attack,
456                        RgnInfo.EG1Hold,
457                        RgnInfo.EG1Decay1 * egInfo.Decay * velrelease,
458                        RgnInfo.EG1Decay2 * egInfo.Decay * velrelease,
459                        RgnInfo.EG1InfiniteSustain,
460                        uint(RgnInfo.EG1Sustain),
461                        RgnInfo.EG1Release * egInfo.Release * velrelease,
462                        velocityAttenuation,
463                        sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
464        }
465  }} // namespace LinuxSampler::gig  }} // namespace LinuxSampler::gig
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