/[svn]/linuxsampler/trunk/src/engines/gig/Voice.cpp
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revision 738 by schoenebeck, Tue Aug 16 17:14:25 2005 UTC revision 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 23  Line 24 
24    
25  #include "../../common/Features.h"  #include "../../common/Features.h"
26  #include "Synthesizer.h"  #include "Synthesizer.h"
27    #include "Profiler.h"
28    #include "Engine.h"
29    #include "EngineChannel.h"
30    
31  #include "Voice.h"  #include "Voice.h"
32    
33  namespace LinuxSampler { namespace gig {  namespace LinuxSampler { namespace gig {
34    
     const float Voice::FILTER_CUTOFF_COEFF(CalculateFilterCutoffCoeff());  
   
     float Voice::CalculateFilterCutoffCoeff() {  
         return log(CONFIG_FILTER_CUTOFF_MAX / CONFIG_FILTER_CUTOFF_MIN);  
     }  
   
35      Voice::Voice() {      Voice::Voice() {
36          pEngine     = NULL;          pEngine = NULL;
37          pDiskThread = NULL;          pEG1 = &EG1;
38          PlaybackState = playback_state_end;          pEG2 = &EG2;
         pLFO1 = new LFOUnsigned(1.0f);  // amplitude EG (0..1 range)  
         pLFO2 = new LFOUnsigned(1.0f);  // filter EG (0..1 range)  
         pLFO3 = new LFOSigned(1200.0f); // pitch EG (-1200..+1200 range)  
         KeyGroup = 0;  
         SynthesisMode = 0; // set all mode bits to 0 first  
         // select synthesis implementation (currently either pure C++ or MMX+SSE(1))  
         #if CONFIG_ASM && ARCH_X86  
         SYNTHESIS_MODE_SET_IMPLEMENTATION(SynthesisMode, Features::supportsMMX() && Features::supportsSSE());  
         #else  
         SYNTHESIS_MODE_SET_IMPLEMENTATION(SynthesisMode, false);  
         #endif  
         SYNTHESIS_MODE_SET_PROFILING(SynthesisMode, true);  
   
         FilterLeft.Reset();  
         FilterRight.Reset();  
39      }      }
40    
41      Voice::~Voice() {      Voice::~Voice() {
         if (pLFO1) delete pLFO1;  
         if (pLFO2) delete pLFO2;  
         if (pLFO3) delete pLFO3;  
42      }      }
43    
44      void Voice::SetEngine(Engine* pEngine) {      EngineChannel* Voice::GetGigEngineChannel() {
45          this->pEngine     = pEngine;          return static_cast<EngineChannel*>(pEngineChannel);
46          this->pDiskThread = pEngine->pDiskThread;      }
47    
48        void Voice::SetEngine(LinuxSampler::Engine* pEngine) {
49            Engine* engine = static_cast<Engine*>(pEngine);
50            this->pEngine     = engine;
51            this->pDiskThread = engine->pDiskThread;
52          dmsg(6,("Voice::SetEngine()\n"));          dmsg(6,("Voice::SetEngine()\n"));
53      }      }
54    
55      /**      Voice::SampleInfo Voice::GetSampleInfo() {
56       *  Initializes and triggers the voice, a disk stream will be launched if          SampleInfo si;
57       *  needed.          si.SampleRate       = pSample->SamplesPerSecond;
58       *          si.ChannelCount     = pSample->Channels;
59       *  @param pEngineChannel - engine channel on which this voice was ordered          si.FrameSize        = pSample->FrameSize;
60       *  @param itNoteOnEvent  - event that caused triggering of this voice          si.BitDepth         = pSample->BitDepth;
61       *  @param PitchBend      - MIDI detune factor (-8192 ... +8191)          si.TotalFrameCount  = pSample->SamplesTotal;
      *  @param pDimRgn        - points to the dimension region which provides sample wave(s) and articulation data  
      *  @param VoiceType      - type of this voice  
      *  @param iKeyGroup      - a value > 0 defines a key group in which this voice is member of  
      *  @returns 0 on success, a value < 0 if the voice wasn't triggered  
      *           (either due to an error or e.g. because no region is  
      *           defined for the given key)  
      */  
     int Voice::Trigger(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent, int PitchBend, ::gig::DimensionRegion* pDimRgn, type_t VoiceType, int iKeyGroup) {  
         this->pEngineChannel = pEngineChannel;  
         this->pDimRgn        = pDimRgn;  
   
         #if CONFIG_DEVMODE  
         if (itNoteOnEvent->FragmentPos() > pEngine->MaxSamplesPerCycle) { // just a sanity check for debugging  
             dmsg(1,("Voice::Trigger(): ERROR, TriggerDelay > Totalsamples\n"));  
         }  
         #endif // CONFIG_DEVMODE  
   
         Type            = VoiceType;  
         MIDIKey         = itNoteOnEvent->Param.Note.Key;  
         PlaybackState   = playback_state_init; // mark voice as triggered, but no audio rendered yet  
         Delay           = itNoteOnEvent->FragmentPos();  
         itTriggerEvent  = itNoteOnEvent;  
         itKillEvent     = Pool<Event>::Iterator();  
         KeyGroup        = iKeyGroup;  
         pSample         = pDimRgn->pSample; // sample won't change until the voice is finished  
   
         // calculate volume  
         const double velocityAttenuation = pDimRgn->GetVelocityAttenuation(itNoteOnEvent->Param.Note.Velocity);  
   
         Volume = velocityAttenuation / 32768.0f; // we downscale by 32768 to convert from int16 value range to DSP value range (which is -1.0..1.0)  
   
         Volume *= pDimRgn->SampleAttenuation;  
   
         // the volume of release triggered samples depends on note length  
         if (Type == type_release_trigger) {  
             float noteLength = float(pEngine->FrameTime + Delay -  
                                      pEngineChannel->pMIDIKeyInfo[MIDIKey].NoteOnTime) / pEngine->SampleRate;  
             float attenuation = 1 - 0.01053 * (256 >> pDimRgn->ReleaseTriggerDecay) * noteLength;  
             if (attenuation <= 0) return -1;  
             Volume *= attenuation;  
         }  
62    
63          // select channel mode (mono or stereo)          si.HasLoops       = pRegion->SampleLoops;
64          SYNTHESIS_MODE_SET_CHANNELS(SynthesisMode, pSample->Channels == 2);          si.LoopStart      = (si.HasLoops) ? pRegion->pSampleLoops[0].LoopStart  : 0;
65            si.LoopLength     = (si.HasLoops) ? pRegion->pSampleLoops[0].LoopLength : 0;
66            si.LoopPlayCount  = pSample->LoopPlayCount;
67            si.Unpitched      = !pRegion->PitchTrack;
68    
69          // get starting crossfade volume level          return si;
70          switch (pDimRgn->AttenuationController.type) {      }
             case ::gig::attenuation_ctrl_t::type_channelaftertouch:  
                 CrossfadeVolume = 1.0f; //TODO: aftertouch not supported yet  
                 break;  
             case ::gig::attenuation_ctrl_t::type_velocity:  
                 CrossfadeVolume = CrossfadeAttenuation(itNoteOnEvent->Param.Note.Velocity);  
                 break;  
             case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate  
                 CrossfadeVolume = CrossfadeAttenuation(pEngineChannel->ControllerTable[pDimRgn->AttenuationController.controller_number]);  
                 break;  
             case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined  
             default:  
                 CrossfadeVolume = 1.0f;  
         }  
71    
72          PanLeft  = 1.0f - float(RTMath::Max(pDimRgn->Pan, 0)) /  63.0f;      Voice::RegionInfo Voice::GetRegionInfo() {
73          PanRight = 1.0f - float(RTMath::Min(pDimRgn->Pan, 0)) / -64.0f;          RegionInfo ri;
74            ri.UnityNote = pRegion->UnityNote;
75            ri.FineTune  = pRegion->FineTune;
76            ri.Pan       = pRegion->Pan;
77            ri.SampleStartOffset = pRegion->SampleStartOffset;
78    
79          Pos = pDimRgn->SampleStartOffset; // offset where we should start playback of sample (0 - 2000 sample points)          ri.EG1PreAttack        = pRegion->EG1PreAttack;
80            ri.EG1Attack           = pRegion->EG1Attack;
81            ri.EG1Hold             = pRegion->EG1Hold;
82            ri.EG1Decay1           = pRegion->EG1Decay1;
83            ri.EG1Decay2           = pRegion->EG1Decay2;
84            ri.EG1Sustain          = pRegion->EG1Sustain;
85            ri.EG1InfiniteSustain  = pRegion->EG1InfiniteSustain;
86            ri.EG1Release          = pRegion->EG1Release;
87    
88          // Check if the sample needs disk streaming or is too short for that          ri.EG2PreAttack        = pRegion->EG2PreAttack;
89          long cachedsamples = pSample->GetCache().Size / pSample->FrameSize;          ri.EG2Attack           = pRegion->EG2Attack;
90          DiskVoice          = cachedsamples < pSample->SamplesTotal;          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          if (DiskVoice) { // voice to be streamed from disk          ri.EG3Attack     = pRegion->EG3Attack;
97              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.EG3Depth      = pRegion->EG3Depth;
98            ri.VCFEnabled    = pRegion->VCFEnabled;
99            ri.VCFType       = Filter::vcf_type_t(pRegion->VCFType);
100            ri.VCFResonance  = pRegion->VCFResonance;
101    
102              // check if there's a loop defined which completely fits into the cached (RAM) part of the sample          ri.ReleaseTriggerDecay = 0.01053 * (256 >> pRegion->ReleaseTriggerDecay);
             if (pSample->Loops && pSample->LoopEnd <= MaxRAMPos) {  
                 RAMLoop        = true;  
                 LoopCyclesLeft = pSample->LoopPlayCount;  
             }  
             else RAMLoop = false;  
103    
104              if (pDiskThread->OrderNewStream(&DiskStreamRef, pSample, MaxRAMPos, !RAMLoop) < 0) {          return ri;
105                  dmsg(1,("Disk stream order failed!\n"));      }
                 KillImmediately();  
                 return -1;  
             }  
             dmsg(4,("Disk voice launched (cached samples: %d, total Samples: %d, MaxRAMPos: %d, RAMLooping: %s)\n", cachedsamples, pSample->SamplesTotal, MaxRAMPos, (RAMLoop) ? "yes" : "no"));  
         }  
         else { // RAM only voice  
             MaxRAMPos = cachedsamples;  
             if (pSample->Loops) {  
                 RAMLoop        = true;  
                 LoopCyclesLeft = pSample->LoopPlayCount;  
             }  
             else RAMLoop = false;  
             dmsg(4,("RAM only voice launched (Looping: %s)\n", (RAMLoop) ? "yes" : "no"));  
         }  
106    
107        Voice::InstrumentInfo Voice::GetInstrumentInfo() {
108            InstrumentInfo ii;
109            ii.FineTune = GetGigEngineChannel()->pInstrument->FineTune;
110            ii.PitchbendRange = GetGigEngineChannel()->pInstrument->PitchbendRange;
111    
112          // calculate initial pitch value          return ii;
113          {      }
             double pitchbasecents = pDimRgn->FineTune + (int) pEngine->ScaleTuning[MIDIKey % 12];  
             if (pDimRgn->PitchTrack) pitchbasecents += (MIDIKey - (int) pDimRgn->UnityNote) * 100;  
             this->PitchBase = RTMath::CentsToFreqRatio(pitchbasecents) * (double(pSample->SamplesPerSecond) / double(pEngine->SampleRate));  
             this->PitchBend = RTMath::CentsToFreqRatio(((double) PitchBend / 8192.0) * 200.0); // pitchbend wheel +-2 semitones = 200 cents  
         }  
   
         // the length of the decay and release curves are dependent on the velocity  
         const double velrelease = 1 / pDimRgn->GetVelocityRelease(itNoteOnEvent->Param.Note.Velocity);  
   
         // setup EG 1 (VCA EG)  
         {  
             // get current value of EG1 controller  
             double eg1controllervalue;  
             switch (pDimRgn->EG1Controller.type) {  
                 case ::gig::eg1_ctrl_t::type_none: // no controller defined  
                     eg1controllervalue = 0;  
                     break;  
                 case ::gig::eg1_ctrl_t::type_channelaftertouch:  
                     eg1controllervalue = 0; // TODO: aftertouch not yet supported  
                     break;  
                 case ::gig::eg1_ctrl_t::type_velocity:  
                     eg1controllervalue = itNoteOnEvent->Param.Note.Velocity;  
                     break;  
                 case ::gig::eg1_ctrl_t::type_controlchange: // MIDI control change controller  
                     eg1controllervalue = pEngineChannel->ControllerTable[pDimRgn->EG1Controller.controller_number];  
                     break;  
             }  
             if (pDimRgn->EG1ControllerInvert) eg1controllervalue = 127 - eg1controllervalue;  
114    
115              // calculate influence of EG1 controller on EG1's parameters      double Voice::GetSampleAttenuation() {
116              // (eg1attack is different from the others)          return pRegion->SampleAttenuation;
117              double eg1attack  = (pDimRgn->EG1ControllerAttackInfluence)  ?      }
                 1 + 0.031 * (double) (pDimRgn->EG1ControllerAttackInfluence == 1 ?  
                                       1 : 1 << pDimRgn->EG1ControllerAttackInfluence) * eg1controllervalue : 1.0;  
             double eg1decay   = (pDimRgn->EG1ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pDimRgn->EG1ControllerDecayInfluence)   * eg1controllervalue : 1.0;  
             double eg1release = (pDimRgn->EG1ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pDimRgn->EG1ControllerReleaseInfluence) * eg1controllervalue : 1.0;  
   
             EG1.trigger(pDimRgn->EG1PreAttack,  
                         pDimRgn->EG1Attack * eg1attack,  
                         pDimRgn->EG1Hold,  
                         pSample->LoopStart,  
                         pDimRgn->EG1Decay1 * eg1decay * velrelease,  
                         pDimRgn->EG1Decay2 * eg1decay * velrelease,  
                         pDimRgn->EG1InfiniteSustain,  
                         pDimRgn->EG1Sustain,  
                         pDimRgn->EG1Release * eg1release * velrelease,  
                         velocityAttenuation,  
                         pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
         }  
118    
119        double Voice::GetVelocityAttenuation(uint8_t MIDIKeyVelocity) {
120            return pRegion->GetVelocityAttenuation(MIDIKeyVelocity);
121        }
122    
123          // setup EG 2 (VCF Cutoff EG)      double Voice::GetVelocityRelease(uint8_t MIDIKeyVelocity) {
124          {          return pRegion->GetVelocityRelease(MIDIKeyVelocity);
125              // get current value of EG2 controller      }
             double eg2controllervalue;  
             switch (pDimRgn->EG2Controller.type) {  
                 case ::gig::eg2_ctrl_t::type_none: // no controller defined  
                     eg2controllervalue = 0;  
                     break;  
                 case ::gig::eg2_ctrl_t::type_channelaftertouch:  
                     eg2controllervalue = 0; // TODO: aftertouch not yet supported  
                     break;  
                 case ::gig::eg2_ctrl_t::type_velocity:  
                     eg2controllervalue = itNoteOnEvent->Param.Note.Velocity;  
                     break;  
                 case ::gig::eg2_ctrl_t::type_controlchange: // MIDI control change controller  
                     eg2controllervalue = pEngineChannel->ControllerTable[pDimRgn->EG2Controller.controller_number];  
                     break;  
             }  
             if (pDimRgn->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue;  
126    
127              // calculate influence of EG2 controller on EG2's parameters      void Voice::ProcessCCEvent(RTList<Event>::Iterator& itEvent) {
128              double eg2attack  = (pDimRgn->EG2ControllerAttackInfluence)  ? 1 + 0.00775 * (double) (1 << pDimRgn->EG2ControllerAttackInfluence)  * eg2controllervalue : 1.0;          if (itEvent->Type == Event::type_control_change && itEvent->Param.CC.Controller) { // if (valid) MIDI control change event
129              double eg2decay   = (pDimRgn->EG2ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pDimRgn->EG2ControllerDecayInfluence)   * eg2controllervalue : 1.0;              if (pRegion->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&
130              double eg2release = (pDimRgn->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pDimRgn->EG2ControllerReleaseInfluence) * eg2controllervalue : 1.0;                  itEvent->Param.CC.Controller == pRegion->AttenuationController.controller_number) {
131                    CrossfadeSmoother.update(AbstractEngine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.CC.Value)]);
132              EG2.trigger(pDimRgn->EG2PreAttack,              }
                         pDimRgn->EG2Attack * eg2attack,  
                         false,  
                         pSample->LoopStart,  
                         pDimRgn->EG2Decay1 * eg2decay * velrelease,  
                         pDimRgn->EG2Decay2 * eg2decay * velrelease,  
                         pDimRgn->EG2InfiniteSustain,  
                         pDimRgn->EG2Sustain,  
                         pDimRgn->EG2Release * eg2release * velrelease,  
                         velocityAttenuation,  
                         pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
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 EG 3 (VCO EG)          VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of fFinalCutoff next time
146          {          fFinalCutoff = cutoff;
147            double eg3depth = RTMath::CentsToFreqRatio(pDimRgn->EG3Depth);      }
           EG3.trigger(eg3depth, pDimRgn->EG3Attack, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
         }  
   
148    
149          // setup LFO 1 (VCA LFO)      double Voice::CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity) {
150          {          float crossfadeVolume;
151              uint16_t lfo1_internal_depth;          switch (pRegion->AttenuationController.type) {
152              switch (pDimRgn->LFO1Controller) {              case ::gig::attenuation_ctrl_t::type_channelaftertouch:
153                  case ::gig::lfo1_ctrl_internal:                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[128])];
154                      lfo1_internal_depth  = pDimRgn->LFO1InternalDepth;                  break;
155                      pLFO1->ExtController = 0; // no external controller              case ::gig::attenuation_ctrl_t::type_velocity:
156                      bLFO1Enabled         = (lfo1_internal_depth > 0);                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(MIDIKeyVelocity)];
157                      break;                  break;
158                  case ::gig::lfo1_ctrl_modwheel:              case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate
159                      lfo1_internal_depth  = 0;                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[pRegion->AttenuationController.controller_number])];
160                      pLFO1->ExtController = 1; // MIDI controller 1                  break;
161                      bLFO1Enabled         = (pDimRgn->LFO1ControlDepth > 0);              case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined
162                      break;              default:
163                  case ::gig::lfo1_ctrl_breath:                  crossfadeVolume = 1.0f;
                     lfo1_internal_depth  = 0;  
                     pLFO1->ExtController = 2; // MIDI controller 2  
                     bLFO1Enabled         = (pDimRgn->LFO1ControlDepth > 0);  
                     break;  
                 case ::gig::lfo1_ctrl_internal_modwheel:  
                     lfo1_internal_depth  = pDimRgn->LFO1InternalDepth;  
                     pLFO1->ExtController = 1; // MIDI controller 1  
                     bLFO1Enabled         = (lfo1_internal_depth > 0 || pDimRgn->LFO1ControlDepth > 0);  
                     break;  
                 case ::gig::lfo1_ctrl_internal_breath:  
                     lfo1_internal_depth  = pDimRgn->LFO1InternalDepth;  
                     pLFO1->ExtController = 2; // MIDI controller 2  
                     bLFO1Enabled         = (lfo1_internal_depth > 0 || pDimRgn->LFO1ControlDepth > 0);  
                     break;  
                 default:  
                     lfo1_internal_depth  = 0;  
                     pLFO1->ExtController = 0; // no external controller  
                     bLFO1Enabled         = false;  
             }  
             if (bLFO1Enabled) pLFO1->trigger(pDimRgn->LFO1Frequency,  
                                              start_level_max,  
                                              lfo1_internal_depth,  
                                              pDimRgn->LFO1ControlDepth,  
                                              pDimRgn->LFO1FlipPhase,  
                                              pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
164          }          }
165    
166            return crossfadeVolume;
167        }
168    
169          // setup LFO 2 (VCF Cutoff LFO)      double Voice::GetEG1ControllerValue(uint8_t MIDIKeyVelocity) {
170          {          double eg1controllervalue = 0;
171              uint16_t lfo2_internal_depth;          switch (pRegion->EG1Controller.type) {
172              switch (pDimRgn->LFO2Controller) {              case ::gig::eg1_ctrl_t::type_none: // no controller defined
173                  case ::gig::lfo2_ctrl_internal:                  eg1controllervalue = 0;
174                      lfo2_internal_depth  = pDimRgn->LFO2InternalDepth;                  break;
175                      pLFO2->ExtController = 0; // no external controller              case ::gig::eg1_ctrl_t::type_channelaftertouch:
176                      bLFO2Enabled         = (lfo2_internal_depth > 0);                  eg1controllervalue = GetGigEngineChannel()->ControllerTable[128];
177                      break;                  break;
178                  case ::gig::lfo2_ctrl_modwheel:              case ::gig::eg1_ctrl_t::type_velocity:
179                      lfo2_internal_depth  = 0;                  eg1controllervalue = MIDIKeyVelocity;
180                      pLFO2->ExtController = 1; // MIDI controller 1                  break;
181                      bLFO2Enabled         = (pDimRgn->LFO2ControlDepth > 0);              case ::gig::eg1_ctrl_t::type_controlchange: // MIDI control change controller
182                      break;                  eg1controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG1Controller.controller_number];
183                  case ::gig::lfo2_ctrl_foot:                  break;
                     lfo2_internal_depth  = 0;  
                     pLFO2->ExtController = 4; // MIDI controller 4  
                     bLFO2Enabled         = (pDimRgn->LFO2ControlDepth > 0);  
                     break;  
                 case ::gig::lfo2_ctrl_internal_modwheel:  
                     lfo2_internal_depth  = pDimRgn->LFO2InternalDepth;  
                     pLFO2->ExtController = 1; // MIDI controller 1  
                     bLFO2Enabled         = (lfo2_internal_depth > 0 || pDimRgn->LFO2ControlDepth > 0);  
                     break;  
                 case ::gig::lfo2_ctrl_internal_foot:  
                     lfo2_internal_depth  = pDimRgn->LFO2InternalDepth;  
                     pLFO2->ExtController = 4; // MIDI controller 4  
                     bLFO2Enabled         = (lfo2_internal_depth > 0 || pDimRgn->LFO2ControlDepth > 0);  
                     break;  
                 default:  
                     lfo2_internal_depth  = 0;  
                     pLFO2->ExtController = 0; // no external controller  
                     bLFO2Enabled         = false;  
             }  
             if (bLFO2Enabled) pLFO2->trigger(pDimRgn->LFO2Frequency,  
                                              start_level_max,  
                                              lfo2_internal_depth,  
                                              pDimRgn->LFO2ControlDepth,  
                                              pDimRgn->LFO2FlipPhase,  
                                              pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
184          }          }
185            if (pRegion->EG1ControllerInvert) eg1controllervalue = 127 - eg1controllervalue;
186    
187            return eg1controllervalue;
188        }
189    
190          // setup LFO 3 (VCO LFO)      Voice::EGInfo Voice::CalculateEG1ControllerInfluence(double eg1ControllerValue) {
191          {          EGInfo eg;
192              uint16_t lfo3_internal_depth;          // (eg1attack is different from the others)
193              switch (pDimRgn->LFO3Controller) {          eg.Attack  = (pRegion->EG1ControllerAttackInfluence)  ?
194                  case ::gig::lfo3_ctrl_internal:              1 + 0.031 * (double) (pRegion->EG1ControllerAttackInfluence == 1 ?
195                      lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;                                    1 : 1 << pRegion->EG1ControllerAttackInfluence) * eg1ControllerValue : 1.0;
196                      pLFO3->ExtController = 0; // no external controller          eg.Decay   = (pRegion->EG1ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerDecayInfluence)   * eg1ControllerValue : 1.0;
197                      bLFO3Enabled         = (lfo3_internal_depth > 0);          eg.Release = (pRegion->EG1ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerReleaseInfluence) * eg1ControllerValue : 1.0;
                     break;  
                 case ::gig::lfo3_ctrl_modwheel:  
                     lfo3_internal_depth  = 0;  
                     pLFO3->ExtController = 1; // MIDI controller 1  
                     bLFO3Enabled         = (pDimRgn->LFO3ControlDepth > 0);  
                     break;  
                 case ::gig::lfo3_ctrl_aftertouch:  
                     lfo3_internal_depth  = 0;  
                     pLFO3->ExtController = 0; // TODO: aftertouch not implemented yet  
                     bLFO3Enabled         = false; // see TODO comment in line above  
                     break;  
                 case ::gig::lfo3_ctrl_internal_modwheel:  
                     lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;  
                     pLFO3->ExtController = 1; // MIDI controller 1  
                     bLFO3Enabled         = (lfo3_internal_depth > 0 || pDimRgn->LFO3ControlDepth > 0);  
                     break;  
                 case ::gig::lfo3_ctrl_internal_aftertouch:  
                     lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;  
                     pLFO1->ExtController = 0; // TODO: aftertouch not implemented yet  
                     bLFO3Enabled         = (lfo3_internal_depth > 0 /*|| pDimRgn->LFO3ControlDepth > 0*/); // see TODO comment in line above  
                     break;  
                 default:  
                     lfo3_internal_depth  = 0;  
                     pLFO3->ExtController = 0; // no external controller  
                     bLFO3Enabled         = false;  
             }  
             if (bLFO3Enabled) pLFO3->trigger(pDimRgn->LFO3Frequency,  
                                              start_level_mid,  
                                              lfo3_internal_depth,  
                                              pDimRgn->LFO3ControlDepth,  
                                              false,  
                                              pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
         }  
198    
199            return eg;
200        }
201    
202          #if CONFIG_FORCE_FILTER      double Voice::GetEG2ControllerValue(uint8_t MIDIKeyVelocity) {
203          const bool bUseFilter = true;          double eg2controllervalue = 0;
204          #else // use filter only if instrument file told so          switch (pRegion->EG2Controller.type) {
205          const bool bUseFilter = pDimRgn->VCFEnabled;              case ::gig::eg2_ctrl_t::type_none: // no controller defined
206          #endif // CONFIG_FORCE_FILTER                  eg2controllervalue = 0;
207          SYNTHESIS_MODE_SET_FILTER(SynthesisMode, bUseFilter);                  break;
208          if (bUseFilter) {              case ::gig::eg2_ctrl_t::type_channelaftertouch:
209              #ifdef CONFIG_OVERRIDE_CUTOFF_CTRL                  eg2controllervalue = GetGigEngineChannel()->ControllerTable[128];
210              VCFCutoffCtrl.controller = CONFIG_OVERRIDE_CUTOFF_CTRL;                  break;
211              #else // use the one defined in the instrument file              case ::gig::eg2_ctrl_t::type_velocity:
212              switch (pDimRgn->VCFCutoffController) {                  eg2controllervalue = MIDIKeyVelocity;
213                  case ::gig::vcf_cutoff_ctrl_modwheel:                  break;
214                      VCFCutoffCtrl.controller = 1;              case ::gig::eg2_ctrl_t::type_controlchange: // MIDI control change controller
215                      break;                  eg2controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG2Controller.controller_number];
216                  case ::gig::vcf_cutoff_ctrl_effect1:                  break;
217                      VCFCutoffCtrl.controller = 12;          }
218                      break;          if (pRegion->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue;
                 case ::gig::vcf_cutoff_ctrl_effect2:  
                     VCFCutoffCtrl.controller = 13;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_breath:  
                     VCFCutoffCtrl.controller = 2;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_foot:  
                     VCFCutoffCtrl.controller = 4;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_sustainpedal:  
                     VCFCutoffCtrl.controller = 64;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_softpedal:  
                     VCFCutoffCtrl.controller = 67;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_genpurpose7:  
                     VCFCutoffCtrl.controller = 82;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_genpurpose8:  
                     VCFCutoffCtrl.controller = 83;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_aftertouch: //TODO: not implemented yet  
                 case ::gig::vcf_cutoff_ctrl_none:  
                 default:  
                     VCFCutoffCtrl.controller = 0;  
                     break;  
             }  
             #endif // CONFIG_OVERRIDE_CUTOFF_CTRL  
219    
220              #ifdef CONFIG_OVERRIDE_RESONANCE_CTRL          return eg2controllervalue;
221              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  
222    
223              #ifndef CONFIG_OVERRIDE_FILTER_TYPE      Voice::EGInfo Voice::CalculateEG2ControllerInfluence(double eg2ControllerValue) {
224              FilterLeft.SetType(pDimRgn->VCFType);          EGInfo eg;
225              FilterRight.SetType(pDimRgn->VCFType);          eg.Attack  = (pRegion->EG2ControllerAttackInfluence)  ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerAttackInfluence)  * eg2ControllerValue : 1.0;
226              #else // override filter type          eg.Decay   = (pRegion->EG2ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerDecayInfluence)   * eg2ControllerValue : 1.0;
227              FilterLeft.SetType(CONFIG_OVERRIDE_FILTER_TYPE);          eg.Release = (pRegion->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerReleaseInfluence) * eg2ControllerValue : 1.0;
             FilterRight.SetType(CONFIG_OVERRIDE_FILTER_TYPE);  
             #endif // CONFIG_OVERRIDE_FILTER_TYPE  
   
             VCFCutoffCtrl.value    = pEngineChannel->ControllerTable[VCFCutoffCtrl.controller];  
             VCFResonanceCtrl.value = pEngineChannel->ControllerTable[VCFResonanceCtrl.controller];  
   
             // calculate cutoff frequency  
             float cutoff = pDimRgn->GetVelocityCutoff(itNoteOnEvent->Param.Note.Velocity);  
             if (pDimRgn->VCFKeyboardTracking) {  
                 cutoff *= exp((itNoteOnEvent->Param.Note.Key - pDimRgn->VCFKeyboardTrackingBreakpoint) * 0.057762265f); // (ln(2) / 12)  
             }  
             CutoffBase = cutoff;  
228    
229              int cvalue;          return eg;
230              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)  
231    
232              VCFCutoffCtrl.fvalue    = cutoff - CONFIG_FILTER_CUTOFF_MIN;      void Voice::InitLFO1() {
233              VCFResonanceCtrl.fvalue = resonance;          uint16_t lfo1_internal_depth;
234          }          switch (pRegion->LFO1Controller) {
235          else {              case ::gig::lfo1_ctrl_internal:
236              VCFCutoffCtrl.controller    = 0;                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
237              VCFResonanceCtrl.controller = 0;                  pLFO1->ExtController = 0; // no external controller
238                    bLFO1Enabled         = (lfo1_internal_depth > 0);
239                    break;
240                case ::gig::lfo1_ctrl_modwheel:
241                    lfo1_internal_depth  = 0;
242                    pLFO1->ExtController = 1; // MIDI controller 1
243                    bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
244                    break;
245                case ::gig::lfo1_ctrl_breath:
246                    lfo1_internal_depth  = 0;
247                    pLFO1->ExtController = 2; // MIDI controller 2
248                    bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
249                    break;
250                case ::gig::lfo1_ctrl_internal_modwheel:
251                    lfo1_internal_depth  = pRegion->LFO1InternalDepth;
252                    pLFO1->ExtController = 1; // MIDI controller 1
253                    bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
254                    break;
255                case ::gig::lfo1_ctrl_internal_breath:
256                    lfo1_internal_depth  = pRegion->LFO1InternalDepth;
257                    pLFO1->ExtController = 2; // MIDI controller 2
258                    bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
259                    break;
260                default:
261                    lfo1_internal_depth  = 0;
262                    pLFO1->ExtController = 0; // no external controller
263                    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          }          }
   
         return 0; // success  
274      }      }
275    
276      /**      void Voice::InitLFO2() {
277       *  Renders the audio data for this voice for the current audio fragment.          uint16_t lfo2_internal_depth;
278       *  The sample input data can either come from RAM (cached sample or sample          switch (pRegion->LFO2Controller) {
279       *  part) or directly from disk. The output signal will be rendered by              case ::gig::lfo2_ctrl_internal:
280       *  resampling / interpolation. If this voice is a disk streaming voice and                  lfo2_internal_depth  = pRegion->LFO2InternalDepth;
281       *  the voice completely played back the cached RAM part of the sample, it                  pLFO2->ExtController = 0; // no external controller
282       *  will automatically switch to disk playback for the next RenderAudio()                  bLFO2Enabled         = (lfo2_internal_depth > 0);
283       *  call.                  break;
284       *              case ::gig::lfo2_ctrl_modwheel:
285       *  @param Samples - number of samples to be rendered in this audio fragment cycle                  lfo2_internal_depth  = 0;
286       */                  pLFO2->ExtController = 1; // MIDI controller 1
287      void Voice::Render(uint Samples) {                  bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
288                    break;
289          // select default values for synthesis mode bits              case ::gig::lfo2_ctrl_foot:
290          SYNTHESIS_MODE_SET_LOOP(SynthesisMode, false);                  lfo2_internal_depth  = 0;
291                    pLFO2->ExtController = 4; // MIDI controller 4
292          switch (this->PlaybackState) {                  bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
293                    break;
294              case playback_state_init:              case ::gig::lfo2_ctrl_internal_modwheel:
295                  this->PlaybackState = playback_state_ram; // we always start playback from RAM cache and switch then to disk if needed                  lfo2_internal_depth  = pRegion->LFO2InternalDepth;
296                  // no break - continue with playback_state_ram                  pLFO2->ExtController = 1; // MIDI controller 1
297                    bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
298              case playback_state_ram: {                  break;
299                      if (RAMLoop) SYNTHESIS_MODE_SET_LOOP(SynthesisMode, true); // enable looping              case ::gig::lfo2_ctrl_internal_foot:
300                    lfo2_internal_depth  = pRegion->LFO2InternalDepth;
301                      // render current fragment                  pLFO2->ExtController = 4; // MIDI controller 4
302                      Synthesize(Samples, (sample_t*) pSample->GetCache().pStart, Delay);                  bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
303                    break;
304                      if (DiskVoice) {              default:
305                          // check if we reached the allowed limit of the sample RAM cache                  lfo2_internal_depth  = 0;
306                          if (Pos > MaxRAMPos) {                  pLFO2->ExtController = 0; // no external controller
307                              dmsg(5,("Voice: switching to disk playback (Pos=%f)\n", Pos));                  bLFO2Enabled         = false;
308                              this->PlaybackState = playback_state_disk;          }
309                          }          if (bLFO2Enabled) {
310                      }              pLFO2->trigger(pRegion->LFO2Frequency,
311                      else if (Pos >= pSample->GetCache().Size / pSample->FrameSize) {                             start_level_max,
312                          this->PlaybackState = playback_state_end;                             lfo2_internal_depth,
313                      }                             pRegion->LFO2ControlDepth,
314                  }                             pRegion->LFO2FlipPhase,
315                  break;                             pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
316                pLFO2->update(pLFO2->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO2->ExtController] : 0);
             case playback_state_disk: {  
                     if (!DiskStreamRef.pStream) {  
                         // check if the disk thread created our ordered disk stream in the meantime  
                         DiskStreamRef.pStream = pDiskThread->AskForCreatedStream(DiskStreamRef.OrderID);  
                         if (!DiskStreamRef.pStream) {  
                             std::cout << stderr << "Disk stream not available in time!" << std::endl << std::flush;  
                             KillImmediately();  
                             return;  
                         }  
                         DiskStreamRef.pStream->IncrementReadPos(pSample->Channels * (int(Pos) - MaxRAMPos));  
                         Pos -= int(Pos);  
                         RealSampleWordsLeftToRead = -1; // -1 means no silence has been added yet  
                     }  
   
                     const int sampleWordsLeftToRead = DiskStreamRef.pStream->GetReadSpace();  
   
                     // add silence sample at the end if we reached the end of the stream (for the interpolator)  
                     if (DiskStreamRef.State == Stream::state_end) {  
                         const int maxSampleWordsPerCycle = (pEngine->MaxSamplesPerCycle << CONFIG_MAX_PITCH) * pSample->Channels + 6; // +6 for the interpolator algorithm  
                         if (sampleWordsLeftToRead <= maxSampleWordsPerCycle) {  
                             // remember how many sample words there are before any silence has been added  
                             if (RealSampleWordsLeftToRead < 0) RealSampleWordsLeftToRead = sampleWordsLeftToRead;  
                             DiskStreamRef.pStream->WriteSilence(maxSampleWordsPerCycle - sampleWordsLeftToRead);  
                         }  
                     }  
   
                     sample_t* ptr = DiskStreamRef.pStream->GetReadPtr(); // get the current read_ptr within the ringbuffer where we read the samples from  
   
                     // render current audio fragment  
                     Synthesize(Samples, ptr, Delay);  
   
                     const int iPos = (int) Pos;  
                     const int readSampleWords = iPos * pSample->Channels; // amount of sample words actually been read  
                     DiskStreamRef.pStream->IncrementReadPos(readSampleWords);  
                     Pos -= iPos; // just keep fractional part of Pos  
   
                     // change state of voice to 'end' if we really reached the end of the sample data  
                     if (RealSampleWordsLeftToRead >= 0) {  
                         RealSampleWordsLeftToRead -= readSampleWords;  
                         if (RealSampleWordsLeftToRead <= 0) this->PlaybackState = playback_state_end;  
                     }  
                 }  
                 break;  
   
             case playback_state_end:  
                 std::cerr << "gig::Voice::Render(): entered with playback_state_end, this is a bug!\n" << std::flush;  
                 break;  
         }  
   
         // Reset synthesis event lists  
         pEngineChannel->pEvents->clear();  
   
         // Reset delay  
         Delay = 0;  
   
         itTriggerEvent = Pool<Event>::Iterator();  
   
         // If sample stream or release stage finished, kill the voice  
         if (PlaybackState == playback_state_end || EG1.getSegmentType() == EGADSR::segment_end) KillImmediately();  
     }  
   
     /**  
      *  Resets voice variables. Should only be called if rendering process is  
      *  suspended / not running.  
      */  
     void Voice::Reset() {  
         FilterLeft.Reset();  
         FilterRight.Reset();  
         DiskStreamRef.pStream = NULL;  
         DiskStreamRef.hStream = 0;  
         DiskStreamRef.State   = Stream::state_unused;  
         DiskStreamRef.OrderID = 0;  
         PlaybackState = playback_state_end;  
         itTriggerEvent = Pool<Event>::Iterator();  
         itKillEvent    = Pool<Event>::Iterator();  
     }  
   
     /**  
      * Process given list of MIDI note on, note off and sustain pedal events  
      * for the given time.  
      *  
      * @param itEvent - iterator pointing to the next event to be processed  
      * @param End     - youngest time stamp where processing should be stopped  
      */  
     void Voice::processTransitionEvents(RTList<Event>::Iterator& itEvent, uint End) {  
         for (; itEvent && itEvent->FragmentPos() <= End; ++itEvent) {  
             if (itEvent->Type == Event::type_release) {  
                 EG1.update(EGADSR::event_release, this->Pos, fFinalPitch, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
                 EG2.update(EGADSR::event_release, this->Pos, fFinalPitch, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
             } else if (itEvent->Type == Event::type_cancel_release) {  
                 EG1.update(EGADSR::event_cancel_release, this->Pos, fFinalPitch, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
                 EG2.update(EGADSR::event_cancel_release, this->Pos, fFinalPitch, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
             }  
317          }          }
318      }      }
319    
320      /**      void Voice::InitLFO3() {
321       * Process given list of MIDI control change and pitch bend events for          uint16_t lfo3_internal_depth;
322       * the given time.          switch (pRegion->LFO3Controller) {
323       *              case ::gig::lfo3_ctrl_internal:
324       * @param itEvent - iterator pointing to the next event to be processed                  lfo3_internal_depth  = pRegion->LFO3InternalDepth;
325       * @param End     - youngest time stamp where processing should be stopped                  pLFO3->ExtController = 0; // no external controller
326       */                  bLFO3Enabled         = (lfo3_internal_depth > 0);
327      void Voice::processCCEvents(RTList<Event>::Iterator& itEvent, uint End) {                  break;
328          for (; itEvent && itEvent->FragmentPos() <= End; ++itEvent) {              case ::gig::lfo3_ctrl_modwheel:
329              if (itEvent->Type == Event::type_control_change &&                  lfo3_internal_depth  = 0;
330                  itEvent->Param.CC.Controller) { // if (valid) MIDI control change event                  pLFO3->ExtController = 1; // MIDI controller 1
331                  if (itEvent->Param.CC.Controller == VCFCutoffCtrl.controller) {                  bLFO3Enabled         = (pRegion->LFO3ControlDepth > 0);
332                      processCutoffEvent(itEvent);                  break;
333                  }              case ::gig::lfo3_ctrl_aftertouch:
334                  if (itEvent->Param.CC.Controller == VCFResonanceCtrl.controller) {                  lfo3_internal_depth  = 0;
335                      processResonanceEvent(itEvent);                  pLFO3->ExtController = 128;
336                  }                  bLFO3Enabled         = true;
337                  if (itEvent->Param.CC.Controller == pLFO1->ExtController) {                  break;
338                      pLFO1->update(itEvent->Param.CC.Value);              case ::gig::lfo3_ctrl_internal_modwheel:
339                  }                  lfo3_internal_depth  = pRegion->LFO3InternalDepth;
340                  if (itEvent->Param.CC.Controller == pLFO2->ExtController) {                  pLFO3->ExtController = 1; // MIDI controller 1
341                      pLFO2->update(itEvent->Param.CC.Value);                  bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
342                  }                  break;
343                  if (itEvent->Param.CC.Controller == pLFO3->ExtController) {              case ::gig::lfo3_ctrl_internal_aftertouch:
344                      pLFO3->update(itEvent->Param.CC.Value);                  lfo3_internal_depth  = pRegion->LFO3InternalDepth;
345                  }                  pLFO3->ExtController = 128;
346                  if (pDimRgn->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&                  bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
347                      itEvent->Param.CC.Controller == pDimRgn->AttenuationController.controller_number) {                  break;
348                      processCrossFadeEvent(itEvent);              default:
349                  }                  lfo3_internal_depth  = 0;
350              } else if (itEvent->Type == Event::type_pitchbend) { // if pitch bend event                  pLFO3->ExtController = 0; // no external controller
351                  processPitchEvent(itEvent);                  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::processPitchEvent(RTList<Event>::Iterator& itEvent) {      float Voice::CalculateCutoffBase(uint8_t MIDIKeyVelocity) {
365          const float pitch = RTMath::CentsToFreqRatio(((double) itEvent->Param.Pitch.Pitch / 8192.0) * 200.0); // +-two semitones = +-200 cents          float cutoff = pRegion->GetVelocityCutoff(MIDIKeyVelocity);
366          fFinalPitch *= pitch;          if (pRegion->VCFKeyboardTracking) {
367      }              cutoff *= RTMath::CentsToFreqRatioUnlimited((MIDIKey - pRegion->VCFKeyboardTrackingBreakpoint) * 100);
368            }
369      void Voice::processCrossFadeEvent(RTList<Event>::Iterator& itEvent) {          return cutoff;
370          CrossfadeVolume = CrossfadeAttenuation(itEvent->Param.CC.Value);      }
371          #if CONFIG_PROCESS_MUTED_CHANNELS  
372          const float effectiveVolume = CrossfadeVolume * Volume * (pEngineChannel->GetMute() ? 0 : pEngineChannel->GlobalVolume);      float Voice::CalculateFinalCutoff(float cutoffBase) {
373          #else          int cvalue;
374          const float effectiveVolume = CrossfadeVolume * Volume * pEngineChannel->GlobalVolume;          if (VCFCutoffCtrl.controller) {
375          #endif              cvalue = GetGigEngineChannel()->ControllerTable[VCFCutoffCtrl.controller];
376          fFinalVolume = effectiveVolume;              if (pRegion->VCFCutoffControllerInvert) cvalue = 127 - cvalue;
377      }              // VCFVelocityScale in this case means Minimum cutoff
378                if (cvalue < pRegion->VCFVelocityScale) cvalue = pRegion->VCFVelocityScale;
379            }
380            else {
381                cvalue = pRegion->VCFCutoff;
382            }
383            float fco = cutoffBase * float(cvalue);
384            if (fco > 127.0f) fco = 127.0f;
385    
386      void Voice::processCutoffEvent(RTList<Event>::Iterator& itEvent) {          return fco;
         int ccvalue = itEvent->Param.CC.Value;  
         if (VCFCutoffCtrl.value == ccvalue) return;  
         VCFCutoffCtrl.value == ccvalue;  
         if (pDimRgn->VCFCutoffControllerInvert)  ccvalue = 127 - ccvalue;  
         if (ccvalue < pDimRgn->VCFVelocityScale) ccvalue = pDimRgn->VCFVelocityScale;  
         float cutoff = CutoffBase * float(ccvalue) * 0.00787402f; // (1 / 127)  
         if (cutoff > 1.0) cutoff = 1.0;  
         cutoff = exp(cutoff * FILTER_CUTOFF_COEFF) * CONFIG_FILTER_CUTOFF_MIN - CONFIG_FILTER_CUTOFF_MIN;  
         VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of fFinalCutoff next time  
         fFinalCutoff = cutoff;  
387      }      }
388    
389      void Voice::processResonanceEvent(RTList<Event>::Iterator& itEvent) {      uint8_t Voice::GetVCFCutoffCtrl() {
390          // convert absolute controller value to differential          uint8_t ctrl;
391          const int ctrldelta = itEvent->Param.CC.Value - VCFResonanceCtrl.value;          switch (pRegion->VCFCutoffController) {
392          VCFResonanceCtrl.value = itEvent->Param.CC.Value;              case ::gig::vcf_cutoff_ctrl_modwheel:
393          const float resonancedelta = (float) ctrldelta * 0.00787f; // 0.0..1.0                  ctrl = 1;
394          fFinalResonance += resonancedelta;                  break;
395          // needed for initialization of parameter              case ::gig::vcf_cutoff_ctrl_effect1:
396          VCFResonanceCtrl.fvalue = itEvent->Param.CC.Value * 0.00787f;                  ctrl = 12;
397      }                  break;
398                case ::gig::vcf_cutoff_ctrl_effect2:
399      /**                  ctrl = 13;
400       *  Synthesizes the current audio fragment for this voice.                  break;
401       *              case ::gig::vcf_cutoff_ctrl_breath:
402       *  @param Samples - number of sample points to be rendered in this audio                  ctrl = 2;
403       *                   fragment cycle                  break;
404       *  @param pSrc    - pointer to input sample data              case ::gig::vcf_cutoff_ctrl_foot:
405       *  @param Skip    - number of sample points to skip in output buffer                  ctrl = 4;
406       */                  break;
407      void Voice::Synthesize(uint Samples, sample_t* pSrc, uint Skip) {              case ::gig::vcf_cutoff_ctrl_sustainpedal:
408          RTList<Event>::Iterator itCCEvent = pEngineChannel->pEvents->first();                  ctrl = 64;
409          RTList<Event>::Iterator itNoteEvent = pEngineChannel->pMIDIKeyInfo[MIDIKey].pEvents->first();                  break;
410                                case ::gig::vcf_cutoff_ctrl_softpedal:
411          if (Skip) { // skip events that happened before this voice was triggered                  ctrl = 67;
412              while (itCCEvent && itCCEvent->FragmentPos() <= Skip) ++itCCEvent;                  break;
413              while (itNoteEvent && itNoteEvent->FragmentPos() <= Skip) ++itNoteEvent;              case ::gig::vcf_cutoff_ctrl_genpurpose7:
414          }                  ctrl = 82;
415                            break;
416          uint i = Skip;              case ::gig::vcf_cutoff_ctrl_genpurpose8:
417          while (i < Samples) {                  ctrl = 83;
418              int iSubFragmentEnd = RTMath::Min(i + CONFIG_DEFAULT_SUBFRAGMENT_SIZE, Samples);                  break;
419                            case ::gig::vcf_cutoff_ctrl_aftertouch:
420              // initialize all final synthesis parameters                  ctrl = 128;
421              fFinalPitch = PitchBase * PitchBend;                  break;
422              #if CONFIG_PROCESS_MUTED_CHANNELS              case ::gig::vcf_cutoff_ctrl_none:
423              fFinalVolume = this->Volume * this->CrossfadeVolume * (pEngineChannel->GetMute() ? 0 : pEngineChannel->GlobalVolume));              default:
424              #else                  ctrl = 0;
425              fFinalVolume = this->Volume * this->CrossfadeVolume * pEngineChannel->GlobalVolume;                  break;
426              #endif          }
             fFinalCutoff    = VCFCutoffCtrl.fvalue;  
             fFinalResonance = VCFResonanceCtrl.fvalue;  
               
             // process MIDI control change and pitchbend events for this subfragment  
             processCCEvents(itCCEvent, iSubFragmentEnd);  
   
             // process transition events (note on, note off & sustain pedal)  
             processTransitionEvents(itNoteEvent, iSubFragmentEnd);  
               
             // process envelope generators  
             switch (EG1.getSegmentType()) {  
                 case EGADSR::segment_lin:  
                     fFinalVolume *= EG1.processLin();  
                     break;  
                 case EGADSR::segment_exp:  
                     fFinalVolume *= EG1.processExp();  
                     break;  
                 case EGADSR::segment_end:  
                     fFinalVolume *= EG1.getLevel();  
                     break; // noop  
             }  
             switch (EG2.getSegmentType()) {  
                 case EGADSR::segment_lin:  
                     fFinalCutoff *= EG2.processLin();  
                     break;  
                 case EGADSR::segment_exp:  
                     fFinalCutoff *= EG2.processExp();  
                     break;  
                 case EGADSR::segment_end:  
                     fFinalCutoff *= EG2.getLevel();  
                     break; // noop  
             }  
             fFinalPitch *= RTMath::CentsToFreqRatio(EG3.render());  
               
             // process low frequency oscillators  
             if (bLFO1Enabled) fFinalVolume *= pLFO1->render();  
             if (bLFO2Enabled) fFinalCutoff *= pLFO2->render();  
             if (bLFO3Enabled) fFinalPitch  *= RTMath::CentsToFreqRatio(pLFO3->render());  
   
             // if filter enabled then update filter coefficients  
             if (SYNTHESIS_MODE_GET_FILTER(SynthesisMode)) {  
                 FilterLeft.SetParameters(fFinalCutoff, fFinalResonance, pEngine->SampleRate);  
                 FilterRight.SetParameters(fFinalCutoff, fFinalResonance, pEngine->SampleRate);  
             }  
427    
428              // how many steps do we calculate for this next subfragment          return ctrl;
429              const int steps = iSubFragmentEnd - i;      }
430                
431              // select the appropriate synthesis mode      uint8_t Voice::GetVCFResonanceCtrl() {
432              SYNTHESIS_MODE_SET_INTERPOLATE(SynthesisMode, fFinalPitch != 1.0f);          uint8_t ctrl;
433                        switch (pRegion->VCFResonanceController) {
434              // render audio for one subfragment              case ::gig::vcf_res_ctrl_genpurpose3:
435              RunSynthesisFunction(SynthesisMode, *this, iSubFragmentEnd, pSrc, i);                  ctrl = 18;
436                    break;
437              // increment envelopes' positions                          case ::gig::vcf_res_ctrl_genpurpose4:
438              if (EG1.active()) {                  ctrl = 19;
439                  EG1.increment(steps);                  break;
440                  if (!EG1.toStageEndLeft()) EG1.update(EGADSR::event_stage_end, this->Pos, fFinalPitch, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);              case ::gig::vcf_res_ctrl_genpurpose5:
441              }                  ctrl = 80;
442              if (EG2.active()) {                  break;
443                  EG2.increment(steps);              case ::gig::vcf_res_ctrl_genpurpose6:
444                  if (!EG2.toStageEndLeft()) EG2.update(EGADSR::event_stage_end, this->Pos, fFinalPitch, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);                  ctrl = 81;
445              }                  break;
446              EG3.increment(steps);              case ::gig::vcf_res_ctrl_none:
447              if (!EG3.toEndLeft()) EG3.update(); // neutralize envelope coefficient if end reached              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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