/[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 2175 by persson, Mon Apr 25 08:12:36 2011 UTC
# Line 3  Line 3 
3   *   LinuxSampler - modular, streaming capable sampler                     *   *   LinuxSampler - modular, streaming capable sampler                     *
4   *                                                                         *   *                                                                         *
5   *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *   *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *
6   *   Copyright (C) 2005 Christian Schoenebeck                              *   *   Copyright (C) 2005 - 2008 Christian Schoenebeck                       *
7     *   Copyright (C) 2009 - 2011 Christian Schoenebeck and Grigor Iliev      *
8   *                                                                         *   *                                                                         *
9   *   This program is free software; you can redistribute it and/or modify  *   *   This program is free software; you can redistribute it and/or modify  *
10   *   it under the terms of the GNU General Public License as published by  *   *   it under the terms of the GNU General Public License as published by  *
# Line 24  Line 25 
25  #include "../../common/Features.h"  #include "../../common/Features.h"
26  #include "Synthesizer.h"  #include "Synthesizer.h"
27  #include "Profiler.h"  #include "Profiler.h"
28    #include "Engine.h"
29    #include "EngineChannel.h"
30    
31  #include "Voice.h"  #include "Voice.h"
32    
33  namespace LinuxSampler { namespace gig {  namespace LinuxSampler { namespace gig {
34    
     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, Profiler::isEnabled());  
   
         finalSynthesisParameters.filterLeft.Reset();  
         finalSynthesisParameters.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);
         this->pDiskThread = pEngine->pDiskThread;  
         dmsg(6,("Voice::SetEngine()\n"));  
46      }      }
47    
48      /**      void Voice::SetEngine(LinuxSampler::Engine* pEngine) {
49       *  Initializes and triggers the voice, a disk stream will be launched if          Engine* engine = static_cast<Engine*>(pEngine);
50       *  needed.          this->pEngine     = engine;
51       *          this->pDiskThread = engine->pDiskThread;
52       *  @param pEngineChannel - engine channel on which this voice was ordered          dmsg(6,("Voice::SetEngine()\n"));
53       *  @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;  
         }  
54    
55          // select channel mode (mono or stereo)      Voice::SampleInfo Voice::GetSampleInfo() {
56          SYNTHESIS_MODE_SET_CHANNELS(SynthesisMode, pSample->Channels == 2);          SampleInfo si;
57            si.SampleRate       = pSample->SamplesPerSecond;
58            si.ChannelCount     = pSample->Channels;
59            si.FrameSize        = pSample->FrameSize;
60            si.BitDepth         = pSample->BitDepth;
61            si.TotalFrameCount  = pSample->SamplesTotal;
62    
63          // get starting crossfade volume level          si.HasLoops       = pRegion->SampleLoops;
64          switch (pDimRgn->AttenuationController.type) {          si.LoopStart      = (si.HasLoops) ? pRegion->pSampleLoops[0].LoopStart  : 0;
65              case ::gig::attenuation_ctrl_t::type_channelaftertouch:          si.LoopLength     = (si.HasLoops) ? pRegion->pSampleLoops[0].LoopLength : 0;
66                  CrossfadeVolume = 1.0f; //TODO: aftertouch not supported yet          si.LoopPlayCount  = pSample->LoopPlayCount;
67                  break;          si.Unpitched      = !pRegion->PitchTrack;
             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;  
         }  
68    
69          PanLeft  = 1.0f - float(RTMath::Max(pDimRgn->Pan, 0)) /  63.0f;          return si;
70          PanRight = 1.0f - float(RTMath::Min(pDimRgn->Pan, 0)) / -64.0f;      }
   
         finalSynthesisParameters.dPos = pDimRgn->SampleStartOffset; // offset where we should start playback of sample (0 - 2000 sample points)  
         Pos = pDimRgn->SampleStartOffset;  
71    
72          // Check if the sample needs disk streaming or is too short for that      Voice::RegionInfo Voice::GetRegionInfo() {
73          long cachedsamples = pSample->GetCache().Size / pSample->FrameSize;          RegionInfo ri;
74          DiskVoice          = cachedsamples < pSample->SamplesTotal;          ri.UnityNote = pRegion->UnityNote;
75            ri.FineTune  = pRegion->FineTune;
76          if (DiskVoice) { // voice to be streamed from disk          ri.Pan       = pRegion->Pan;
77              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;  
78    
79              if (pDiskThread->OrderNewStream(&DiskStreamRef, pSample, MaxRAMPos, !RAMLoop) < 0) {          ri.EG1PreAttack        = pRegion->EG1PreAttack;
80                  dmsg(1,("Disk stream order failed!\n"));          ri.EG1Attack           = pRegion->EG1Attack;
81                  KillImmediately();          ri.EG1Hold             = pRegion->EG1Hold;
82                  return -1;          ri.EG1Decay1           = pRegion->EG1Decay1;
83              }          ri.EG1Decay2           = pRegion->EG1Decay2;
84              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;
85          }          ri.EG1InfiniteSustain  = pRegion->EG1InfiniteSustain;
86          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"));  
         }  
87    
88            ri.EG2PreAttack        = pRegion->EG2PreAttack;
89            ri.EG2Attack           = pRegion->EG2Attack;
90            ri.EG2Decay1           = pRegion->EG2Decay1;
91            ri.EG2Decay2           = pRegion->EG2Decay2;
92            ri.EG2Sustain          = pRegion->EG2Sustain;
93            ri.EG2InfiniteSustain  = pRegion->EG2InfiniteSustain;
94            ri.EG2Release          = pRegion->EG2Release;
95    
96          // calculate initial pitch value          ri.EG3Attack     = pRegion->EG3Attack;
97          {          ri.EG3Depth      = pRegion->EG3Depth;
98              double pitchbasecents = pDimRgn->FineTune + (int) pEngine->ScaleTuning[MIDIKey % 12];          ri.VCFEnabled    = pRegion->VCFEnabled;
99              if (pDimRgn->PitchTrack) pitchbasecents += (MIDIKey - (int) pDimRgn->UnityNote) * 100;          ri.VCFType       = Filter::vcf_type_t(pRegion->VCFType);
100              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;  
101    
102              // calculate influence of EG1 controller on EG1's parameters          ri.ReleaseTriggerDecay = 0.01053 * (256 >> pRegion->ReleaseTriggerDecay);
             // (eg1attack is different from the others)  
             double eg1attack  = (pDimRgn->EG1ControllerAttackInfluence)  ?  
                 1 + 0.031 * (double) (pDimRgn->EG1ControllerAttackInfluence == 1 ?  
                                       1 : 1 << pDimRgn->EG1ControllerAttackInfluence) * eg1controllervalue : 1.0;  
             double eg1decay   = (pDimRgn->EG1ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pDimRgn->EG1ControllerDecayInfluence)   * eg1controllervalue : 1.0;  
             double eg1release = (pDimRgn->EG1ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pDimRgn->EG1ControllerReleaseInfluence) * eg1controllervalue : 1.0;  
   
             EG1.trigger(pDimRgn->EG1PreAttack,  
                         pDimRgn->EG1Attack * eg1attack,  
                         pDimRgn->EG1Hold,  
                         pDimRgn->EG1Decay1 * eg1decay * velrelease,  
                         pDimRgn->EG1Decay2 * eg1decay * velrelease,  
                         pDimRgn->EG1InfiniteSustain,  
                         pDimRgn->EG1Sustain,  
                         pDimRgn->EG1Release * eg1release * velrelease,  
                         velocityAttenuation,  
                         pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
         }  
103    
104            return ri;
105        }
106    
107          // setup EG 2 (VCF Cutoff EG)      Voice::InstrumentInfo Voice::GetInstrumentInfo() {
108          {          InstrumentInfo ii;
109              // get current value of EG2 controller          ii.FineTune = GetGigEngineChannel()->pInstrument->FineTune;
110              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;  
111    
112              // calculate influence of EG2 controller on EG2's parameters          return ii;
113              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);  
         }  
114    
115        double Voice::GetSampleAttenuation() {
116            return pRegion->SampleAttenuation;
117        }
118    
119          // setup EG 3 (VCO EG)      double Voice::GetVelocityAttenuation(uint8_t MIDIKeyVelocity) {
120          {          return pRegion->GetVelocityAttenuation(MIDIKeyVelocity);
121            double eg3depth = RTMath::CentsToFreqRatio(pDimRgn->EG3Depth);      }
           EG3.trigger(eg3depth, pDimRgn->EG3Attack, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
         }  
122    
123        double Voice::GetVelocityRelease(uint8_t MIDIKeyVelocity) {
124            return pRegion->GetVelocityRelease(MIDIKeyVelocity);
125        }
126    
127          // setup LFO 1 (VCA LFO)      void Voice::ProcessCCEvent(RTList<Event>::Iterator& itEvent) {
128          {          if (itEvent->Type == Event::type_control_change && itEvent->Param.CC.Controller) { // if (valid) MIDI control change event
129              uint16_t lfo1_internal_depth;              if (pRegion->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&
130              switch (pDimRgn->LFO1Controller) {                  itEvent->Param.CC.Controller == pRegion->AttenuationController.controller_number) {
131                  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;  
132              }              }
             if (bLFO1Enabled) pLFO1->trigger(pDimRgn->LFO1Frequency,  
                                              start_level_max,  
                                              lfo1_internal_depth,  
                                              pDimRgn->LFO1ControlDepth,  
                                              pDimRgn->LFO1FlipPhase,  
                                              pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
133          }          }
134        }
135    
136        void Voice::ProcessCutoffEvent(RTList<Event>::Iterator& itEvent) {
137            int ccvalue = itEvent->Param.CC.Value;
138            if (VCFCutoffCtrl.value == ccvalue) return;
139            VCFCutoffCtrl.value = ccvalue;
140            if (pRegion->VCFCutoffControllerInvert)  ccvalue = 127 - ccvalue;
141            if (ccvalue < pRegion->VCFVelocityScale) ccvalue = pRegion->VCFVelocityScale;
142            float cutoff = CutoffBase * float(ccvalue);
143            if (cutoff > 127.0f) cutoff = 127.0f;
144    
145          // setup LFO 2 (VCF Cutoff LFO)          VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of fFinalCutoff next time
146          {          fFinalCutoff = cutoff;
147              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);  
         }  
   
148    
149          // setup LFO 3 (VCO LFO)      double Voice::CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity) {
150          {          float crossfadeVolume;
151              uint16_t lfo3_internal_depth;          switch (pRegion->AttenuationController.type) {
152              switch (pDimRgn->LFO3Controller) {              case ::gig::attenuation_ctrl_t::type_channelaftertouch:
153                  case ::gig::lfo3_ctrl_internal:                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[128])];
154                      lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;                  break;
155                      pLFO3->ExtController = 0; // no external controller              case ::gig::attenuation_ctrl_t::type_velocity:
156                      bLFO3Enabled         = (lfo3_internal_depth > 0);                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(MIDIKeyVelocity)];
157                      break;                  break;
158                  case ::gig::lfo3_ctrl_modwheel:              case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate
159                      lfo3_internal_depth  = 0;                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[pRegion->AttenuationController.controller_number])];
160                      pLFO3->ExtController = 1; // MIDI controller 1                  break;
161                      bLFO3Enabled         = (pDimRgn->LFO3ControlDepth > 0);              case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined
162                      break;              default:
163                  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);  
164          }          }
165    
166            return crossfadeVolume;
167        }
168    
169          #if CONFIG_FORCE_FILTER      double Voice::GetEG1ControllerValue(uint8_t MIDIKeyVelocity) {
170          const bool bUseFilter = true;          double eg1controllervalue = 0;
171          #else // use filter only if instrument file told so          switch (pRegion->EG1Controller.type) {
172          const bool bUseFilter = pDimRgn->VCFEnabled;              case ::gig::eg1_ctrl_t::type_none: // no controller defined
173          #endif // CONFIG_FORCE_FILTER                  eg1controllervalue = 0;
174          SYNTHESIS_MODE_SET_FILTER(SynthesisMode, bUseFilter);                  break;
175          if (bUseFilter) {              case ::gig::eg1_ctrl_t::type_channelaftertouch:
176              #ifdef CONFIG_OVERRIDE_CUTOFF_CTRL                  eg1controllervalue = GetGigEngineChannel()->ControllerTable[128];
177              VCFCutoffCtrl.controller = CONFIG_OVERRIDE_CUTOFF_CTRL;                  break;
178              #else // use the one defined in the instrument file              case ::gig::eg1_ctrl_t::type_velocity:
179              switch (pDimRgn->VCFCutoffController) {                  eg1controllervalue = MIDIKeyVelocity;
180                  case ::gig::vcf_cutoff_ctrl_modwheel:                  break;
181                      VCFCutoffCtrl.controller = 1;              case ::gig::eg1_ctrl_t::type_controlchange: // MIDI control change controller
182                      break;                  eg1controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG1Controller.controller_number];
183                  case ::gig::vcf_cutoff_ctrl_effect1:                  break;
184                      VCFCutoffCtrl.controller = 12;          }
185                      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  
186    
187              #ifdef CONFIG_OVERRIDE_RESONANCE_CTRL          return eg1controllervalue;
188              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  
189    
190              #ifndef CONFIG_OVERRIDE_FILTER_TYPE      Voice::EGInfo Voice::CalculateEG1ControllerInfluence(double eg1ControllerValue) {
191              finalSynthesisParameters.filterLeft.SetType(pDimRgn->VCFType);          EGInfo eg;
192              finalSynthesisParameters.filterRight.SetType(pDimRgn->VCFType);          // (eg1attack is different from the others)
193              #else // override filter type          eg.Attack  = (pRegion->EG1ControllerAttackInfluence)  ?
194              FilterLeft.SetType(CONFIG_OVERRIDE_FILTER_TYPE);              1 + 0.031 * (double) (pRegion->EG1ControllerAttackInfluence == 1 ?
195              FilterRight.SetType(CONFIG_OVERRIDE_FILTER_TYPE);                                    1 : 1 << pRegion->EG1ControllerAttackInfluence) * eg1ControllerValue : 1.0;
196              #endif // CONFIG_OVERRIDE_FILTER_TYPE          eg.Decay   = (pRegion->EG1ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerDecayInfluence)   * eg1ControllerValue : 1.0;
197            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;  
198    
199              int cvalue;          return eg;
200              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)  
201    
202              VCFCutoffCtrl.fvalue    = cutoff - CONFIG_FILTER_CUTOFF_MIN;      double Voice::GetEG2ControllerValue(uint8_t MIDIKeyVelocity) {
203              VCFResonanceCtrl.fvalue = resonance;          double eg2controllervalue = 0;
204          }          switch (pRegion->EG2Controller.type) {
205          else {              case ::gig::eg2_ctrl_t::type_none: // no controller defined
206              VCFCutoffCtrl.controller    = 0;                  eg2controllervalue = 0;
207              VCFResonanceCtrl.controller = 0;                  break;
208                case ::gig::eg2_ctrl_t::type_channelaftertouch:
209                    eg2controllervalue = GetGigEngineChannel()->ControllerTable[128];
210                    break;
211                case ::gig::eg2_ctrl_t::type_velocity:
212                    eg2controllervalue = MIDIKeyVelocity;
213                    break;
214                case ::gig::eg2_ctrl_t::type_controlchange: // MIDI control change controller
215                    eg2controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG2Controller.controller_number];
216                    break;
217          }          }
218            if (pRegion->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue;
219    
220          return 0; // success          return eg2controllervalue;
221      }      }
222    
223      /**      Voice::EGInfo Voice::CalculateEG2ControllerInfluence(double eg2ControllerValue) {
224       *  Renders the audio data for this voice for the current audio fragment.          EGInfo eg;
225       *  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;
226       *  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;
227       *  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;
228       *  the voice completely played back the cached RAM part of the sample, it  
229       *  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);  
             }  
         }  
230      }      }
231    
232      /**      void Voice::InitLFO1() {
233       * Process given list of MIDI control change and pitch bend events for          uint16_t lfo1_internal_depth;
234       * the given time.          switch (pRegion->LFO1Controller) {
235       *              case ::gig::lfo1_ctrl_internal:
236       * @param itEvent - iterator pointing to the next event to be processed                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
237       * @param End     - youngest time stamp where processing should be stopped                  pLFO1->ExtController = 0; // no external controller
238       */                  bLFO1Enabled         = (lfo1_internal_depth > 0);
239      void Voice::processCCEvents(RTList<Event>::Iterator& itEvent, uint End) {                  break;
240          for (; itEvent && itEvent->FragmentPos() <= End; ++itEvent) {              case ::gig::lfo1_ctrl_modwheel:
241              if (itEvent->Type == Event::type_control_change &&                  lfo1_internal_depth  = 0;
242                  itEvent->Param.CC.Controller) { // if (valid) MIDI control change event                  pLFO1->ExtController = 1; // MIDI controller 1
243                  if (itEvent->Param.CC.Controller == VCFCutoffCtrl.controller) {                  bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
244                      processCutoffEvent(itEvent);                  break;
245                  }              case ::gig::lfo1_ctrl_breath:
246                  if (itEvent->Param.CC.Controller == VCFResonanceCtrl.controller) {                  lfo1_internal_depth  = 0;
247                      processResonanceEvent(itEvent);                  pLFO1->ExtController = 2; // MIDI controller 2
248                  }                  bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
249                  if (itEvent->Param.CC.Controller == pLFO1->ExtController) {                  break;
250                      pLFO1->update(itEvent->Param.CC.Value);              case ::gig::lfo1_ctrl_internal_modwheel:
251                  }                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
252                  if (itEvent->Param.CC.Controller == pLFO2->ExtController) {                  pLFO1->ExtController = 1; // MIDI controller 1
253                      pLFO2->update(itEvent->Param.CC.Value);                  bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
254                  }                  break;
255                  if (itEvent->Param.CC.Controller == pLFO3->ExtController) {              case ::gig::lfo1_ctrl_internal_breath:
256                      pLFO3->update(itEvent->Param.CC.Value);                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
257                  }                  pLFO1->ExtController = 2; // MIDI controller 2
258                  if (pDimRgn->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&                  bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
259                      itEvent->Param.CC.Controller == pDimRgn->AttenuationController.controller_number) {                  break;
260                      processCrossFadeEvent(itEvent);              default:
261                  }                  lfo1_internal_depth  = 0;
262              } else if (itEvent->Type == Event::type_pitchbend) { // if pitch bend event                  pLFO1->ExtController = 0; // no external controller
263                  processPitchEvent(itEvent);                  bLFO1Enabled         = false;
264              }          }
265            if (bLFO1Enabled) {
266                pLFO1->trigger(pRegion->LFO1Frequency,
267                               start_level_min,
268                               lfo1_internal_depth,
269                               pRegion->LFO1ControlDepth,
270                               pRegion->LFO1FlipPhase,
271                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
272                pLFO1->update(pLFO1->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO1->ExtController] : 0);
273          }          }
274      }      }
275    
276      void Voice::processPitchEvent(RTList<Event>::Iterator& itEvent) {      void Voice::InitLFO2() {
277          const float pitch = RTMath::CentsToFreqRatio(((double) itEvent->Param.Pitch.Pitch / 8192.0) * 200.0); // +-two semitones = +-200 cents          uint16_t lfo2_internal_depth;
278          finalSynthesisParameters.fFinalPitch *= pitch;          switch (pRegion->LFO2Controller) {
279          PitchBend = pitch;              case ::gig::lfo2_ctrl_internal:
280      }                  lfo2_internal_depth  = pRegion->LFO2InternalDepth;
281                    pLFO2->ExtController = 0; // no external controller
282      void Voice::processCrossFadeEvent(RTList<Event>::Iterator& itEvent) {                  bLFO2Enabled         = (lfo2_internal_depth > 0);
283          CrossfadeVolume = CrossfadeAttenuation(itEvent->Param.CC.Value);                  break;
284          #if CONFIG_PROCESS_MUTED_CHANNELS              case ::gig::lfo2_ctrl_modwheel:
285          const float effectiveVolume = CrossfadeVolume * Volume * (pEngineChannel->GetMute() ? 0 : pEngineChannel->GlobalVolume);                  lfo2_internal_depth  = 0;
286          #else                  pLFO2->ExtController = 1; // MIDI controller 1
287          const float effectiveVolume = CrossfadeVolume * Volume * pEngineChannel->GlobalVolume;                  bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
288          #endif                  break;
289          fFinalVolume = effectiveVolume;              case ::gig::lfo2_ctrl_foot:
290                    lfo2_internal_depth  = 0;
291                    pLFO2->ExtController = 4; // MIDI controller 4
292                    bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
293                    break;
294                case ::gig::lfo2_ctrl_internal_modwheel:
295                    lfo2_internal_depth  = pRegion->LFO2InternalDepth;
296                    pLFO2->ExtController = 1; // MIDI controller 1
297                    bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
298                    break;
299                case ::gig::lfo2_ctrl_internal_foot:
300                    lfo2_internal_depth  = pRegion->LFO2InternalDepth;
301                    pLFO2->ExtController = 4; // MIDI controller 4
302                    bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
303                    break;
304                default:
305                    lfo2_internal_depth  = 0;
306                    pLFO2->ExtController = 0; // no external controller
307                    bLFO2Enabled         = false;
308            }
309            if (bLFO2Enabled) {
310                pLFO2->trigger(pRegion->LFO2Frequency,
311                               start_level_max,
312                               lfo2_internal_depth,
313                               pRegion->LFO2ControlDepth,
314                               pRegion->LFO2FlipPhase,
315                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
316                pLFO2->update(pLFO2->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO2->ExtController] : 0);
317            }
318      }      }
319    
320      void Voice::processCutoffEvent(RTList<Event>::Iterator& itEvent) {      void Voice::InitLFO3() {
321          int ccvalue = itEvent->Param.CC.Value;          uint16_t lfo3_internal_depth;
322          if (VCFCutoffCtrl.value == ccvalue) return;          switch (pRegion->LFO3Controller) {
323          VCFCutoffCtrl.value == ccvalue;              case ::gig::lfo3_ctrl_internal:
324          if (pDimRgn->VCFCutoffControllerInvert)  ccvalue = 127 - ccvalue;                  lfo3_internal_depth  = pRegion->LFO3InternalDepth;
325          if (ccvalue < pDimRgn->VCFVelocityScale) ccvalue = pDimRgn->VCFVelocityScale;                  pLFO3->ExtController = 0; // no external controller
326          float cutoff = CutoffBase * float(ccvalue) * 0.00787402f; // (1 / 127)                  bLFO3Enabled         = (lfo3_internal_depth > 0);
327          if (cutoff > 1.0) cutoff = 1.0;                  break;
328          cutoff = exp(cutoff * FILTER_CUTOFF_COEFF) * CONFIG_FILTER_CUTOFF_MIN - CONFIG_FILTER_CUTOFF_MIN;              case ::gig::lfo3_ctrl_modwheel:
329          VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of fFinalCutoff next time                  lfo3_internal_depth  = 0;
330          fFinalCutoff = cutoff;                  pLFO3->ExtController = 1; // MIDI controller 1
331                    bLFO3Enabled         = (pRegion->LFO3ControlDepth > 0);
332                    break;
333                case ::gig::lfo3_ctrl_aftertouch:
334                    lfo3_internal_depth  = 0;
335                    pLFO3->ExtController = 128;
336                    bLFO3Enabled         = true;
337                    break;
338                case ::gig::lfo3_ctrl_internal_modwheel:
339                    lfo3_internal_depth  = pRegion->LFO3InternalDepth;
340                    pLFO3->ExtController = 1; // MIDI controller 1
341                    bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
342                    break;
343                case ::gig::lfo3_ctrl_internal_aftertouch:
344                    lfo3_internal_depth  = pRegion->LFO3InternalDepth;
345                    pLFO3->ExtController = 128;
346                    bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
347                    break;
348                default:
349                    lfo3_internal_depth  = 0;
350                    pLFO3->ExtController = 0; // no external controller
351                    bLFO3Enabled         = false;
352            }
353            if (bLFO3Enabled) {
354                pLFO3->trigger(pRegion->LFO3Frequency,
355                               start_level_mid,
356                               lfo3_internal_depth,
357                               pRegion->LFO3ControlDepth,
358                               false,
359                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
360                pLFO3->update(pLFO3->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO3->ExtController] : 0);
361            }
362      }      }
363    
364      void Voice::processResonanceEvent(RTList<Event>::Iterator& itEvent) {      float Voice::CalculateCutoffBase(uint8_t MIDIKeyVelocity) {
365          // convert absolute controller value to differential          float cutoff = pRegion->GetVelocityCutoff(MIDIKeyVelocity);
366          const int ctrldelta = itEvent->Param.CC.Value - VCFResonanceCtrl.value;          if (pRegion->VCFKeyboardTracking) {
367          VCFResonanceCtrl.value = itEvent->Param.CC.Value;              cutoff *= RTMath::CentsToFreqRatioUnlimited((MIDIKey - pRegion->VCFKeyboardTrackingBreakpoint) * 100);
368          const float resonancedelta = (float) ctrldelta * 0.00787f; // 0.0..1.0          }
369          fFinalResonance += resonancedelta;          return cutoff;
370          // needed for initialization of parameter      }
371          VCFResonanceCtrl.fvalue = itEvent->Param.CC.Value * 0.00787f;  
372      }      float Voice::CalculateFinalCutoff(float cutoffBase) {
373            int cvalue;
374      /**          if (VCFCutoffCtrl.controller) {
375       *  Synthesizes the current audio fragment for this voice.              cvalue = GetGigEngineChannel()->ControllerTable[VCFCutoffCtrl.controller];
376       *              if (pRegion->VCFCutoffControllerInvert) cvalue = 127 - cvalue;
377       *  @param Samples - number of sample points to be rendered in this audio              // VCFVelocityScale in this case means Minimum cutoff
378       *                   fragment cycle              if (cvalue < pRegion->VCFVelocityScale) cvalue = pRegion->VCFVelocityScale;
379       *  @param pSrc    - pointer to input sample data          }
380       *  @param Skip    - number of sample points to skip in output buffer          else {
381       */              cvalue = pRegion->VCFCutoff;
382      void Voice::Synthesize(uint Samples, sample_t* pSrc, uint Skip) {          }
383          finalSynthesisParameters.pOutLeft  = &pEngineChannel->pOutputLeft[Skip];          float fco = cutoffBase * float(cvalue);
384          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());  
385    
386              // process low frequency oscillators          return fco;
387              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);  
             }  
388    
389              // do we need resampling?      uint8_t Voice::GetVCFCutoffCtrl() {
390              const float __PLUS_ONE_CENT  = 1.000577789506554859250142541782224725466f;          uint8_t ctrl;
391              const float __MINUS_ONE_CENT = 0.9994225441413807496009516495583113737666f;          switch (pRegion->VCFCutoffController) {
392              const bool bResamplingRequired = !(finalSynthesisParameters.fFinalPitch <= __PLUS_ONE_CENT &&              case ::gig::vcf_cutoff_ctrl_modwheel:
393                                                 finalSynthesisParameters.fFinalPitch >= __MINUS_ONE_CENT);                  ctrl = 1;
394              SYNTHESIS_MODE_SET_INTERPOLATE(SynthesisMode, bResamplingRequired);                  break;
395                case ::gig::vcf_cutoff_ctrl_effect1:
396              // prepare final synthesis parameters structure                  ctrl = 12;
397              finalSynthesisParameters.fFinalVolumeLeft  = fFinalVolume * PanLeft;                  break;
398              finalSynthesisParameters.fFinalVolumeRight = fFinalVolume * PanRight;              case ::gig::vcf_cutoff_ctrl_effect2:
399              finalSynthesisParameters.uiToGo            = iSubFragmentEnd - i;                  ctrl = 13;
400                    break;
401              // render audio for one subfragment              case ::gig::vcf_cutoff_ctrl_breath:
402              RunSynthesisFunction(SynthesisMode, &finalSynthesisParameters, &loop);                  ctrl = 2;
403                    break;
404              const double newPos = Pos + (iSubFragmentEnd - i) * finalSynthesisParameters.fFinalPitch;              case ::gig::vcf_cutoff_ctrl_foot:
405                    ctrl = 4;
406              // increment envelopes' positions                  break;
407              if (EG1.active()) {              case ::gig::vcf_cutoff_ctrl_sustainpedal:
408                    ctrl = 64;
409                  // if sample has a loop and loop start has been reached in this subfragment, send a special event to EG1 to let it finish the attack hold stage                  break;
410                  if (pSample->Loops && Pos <= pSample->LoopStart && pSample->LoopStart < newPos) {              case ::gig::vcf_cutoff_ctrl_softpedal:
411                      EG1.update(EGADSR::event_hold_end, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);                  ctrl = 67;
412                  }                  break;
413                case ::gig::vcf_cutoff_ctrl_genpurpose7:
414                    ctrl = 82;
415                    break;
416                case ::gig::vcf_cutoff_ctrl_genpurpose8:
417                    ctrl = 83;
418                    break;
419                case ::gig::vcf_cutoff_ctrl_aftertouch:
420                    ctrl = 128;
421                    break;
422                case ::gig::vcf_cutoff_ctrl_none:
423                default:
424                    ctrl = 0;
425                    break;
426            }
427    
428                  EG1.increment(1);          return ctrl;
429                  if (!EG1.toStageEndLeft()) EG1.update(EGADSR::event_stage_end, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);      }
             }  
             if (EG2.active()) {  
                 EG2.increment(1);  
                 if (!EG2.toStageEndLeft()) EG2.update(EGADSR::event_stage_end, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
             }  
             EG3.increment(1);  
             if (!EG3.toEndLeft()) EG3.update(); // neutralize envelope coefficient if end reached  
430    
431              Pos = newPos;      uint8_t Voice::GetVCFResonanceCtrl() {
432              i = iSubFragmentEnd;          uint8_t ctrl;
433            switch (pRegion->VCFResonanceController) {
434                case ::gig::vcf_res_ctrl_genpurpose3:
435                    ctrl = 18;
436                    break;
437                case ::gig::vcf_res_ctrl_genpurpose4:
438                    ctrl = 19;
439                    break;
440                case ::gig::vcf_res_ctrl_genpurpose5:
441                    ctrl = 80;
442                    break;
443                case ::gig::vcf_res_ctrl_genpurpose6:
444                    ctrl = 81;
445                    break;
446                case ::gig::vcf_res_ctrl_none:
447                default:
448                    ctrl = 0;
449          }          }
450    
451            return ctrl;
452      }      }
453    
454      /**      void Voice::TriggerEG1(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
455       *  Immediately kill the voice. This method should not be used to kill          EG1.trigger(uint(RgnInfo.EG1PreAttack),
456       *  a normal, active voice, because it doesn't take care of things like                      RgnInfo.EG1Attack * egInfo.Attack,
457       *  fading down the volume level to avoid clicks and regular processing                      RgnInfo.EG1Hold,
458       *  until the kill event actually occured!                      RgnInfo.EG1Decay1 * egInfo.Decay * velrelease,
459       *                      RgnInfo.EG1Decay2 * egInfo.Decay * velrelease,
460       *  @see Kill()                      RgnInfo.EG1InfiniteSustain,
461       */                      uint(RgnInfo.EG1Sustain),
462      void Voice::KillImmediately() {                      RgnInfo.EG1Release * egInfo.Release * velrelease,
463          if (DiskVoice && DiskStreamRef.State != Stream::state_unused) {                      velocityAttenuation,
464              pDiskThread->OrderDeletionOfStream(&DiskStreamRef);                      sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
465          }      }
466          Reset();  
467      }      void Voice::TriggerEG2(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
468            EG2.trigger(uint(RgnInfo.EG2PreAttack),
469      /**                      RgnInfo.EG2Attack * egInfo.Attack,
470       *  Kill the voice in regular sense. Let the voice render audio until                      false,
471       *  the kill event actually occured and then fade down the volume level                      RgnInfo.EG2Decay1 * egInfo.Decay * velrelease,
472       *  very quickly and let the voice die finally. Unlike a normal release                      RgnInfo.EG2Decay2 * egInfo.Decay * velrelease,
473       *  of a voice, a kill process cannot be cancalled and is therefore                      RgnInfo.EG2InfiniteSustain,
474       *  usually used for voice stealing and key group conflicts.                      uint(RgnInfo.EG2Sustain),
475       *                      RgnInfo.EG2Release * egInfo.Release * velrelease,
476       *  @param itKillEvent - event which caused the voice to be killed                      velocityAttenuation,
477       */                      sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
478      void Voice::Kill(Pool<Event>::Iterator& itKillEvent) {      }
479          #if CONFIG_DEVMODE  
480          if (!itKillEvent) dmsg(1,("gig::Voice::Kill(): ERROR, !itKillEvent !!!\n"));      void Voice::ProcessGroupEvent(RTList<Event>::Iterator& itEvent) {
481          if (itKillEvent && !itKillEvent.isValid()) dmsg(1,("gig::Voice::Kill(): ERROR, itKillEvent invalid !!!\n"));          dmsg(4,("Voice %x processGroupEvents event type=%d", this, itEvent->Type));
482          #endif // CONFIG_DEVMODE  
483            // TODO: The SustainPedal condition could be wrong, maybe the
484            // check should be if this Voice is in release stage or is a
485            // release sample instead. Need to test this in GSt.
486            if (itEvent->Param.Note.Key != MIDIKey ||
487                !GetGigEngineChannel()->SustainPedal) {
488                dmsg(4,("Voice %x - kill", this));
489    
490          if (itTriggerEvent && itKillEvent->FragmentPos() <= itTriggerEvent->FragmentPos()) return;              // kill the voice fast
491          this->itKillEvent = itKillEvent;              pEG1->enterFadeOutStage();
492            }
493      }      }
494    
495  }} // namespace LinuxSampler::gig  }} // namespace LinuxSampler::gig
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