/[svn]/linuxsampler/trunk/src/engines/gig/Voice.cpp
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revision 781 by schoenebeck, Mon Sep 26 10:17:00 2005 UTC revision 2114 by persson, Tue Aug 10 12:05:19 2010 UTC
# Line 3  Line 3 
3   *   LinuxSampler - modular, streaming capable sampler                     *   *   LinuxSampler - modular, streaming capable sampler                     *
4   *                                                                         *   *                                                                         *
5   *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *   *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *
6   *   Copyright (C) 2005 Christian Schoenebeck                              *   *   Copyright (C) 2005 - 2008 Christian Schoenebeck                       *
7     *   Copyright (C) 2009 - 2010 Christian Schoenebeck and Grigor Iliev      *
8   *                                                                         *   *                                                                         *
9   *   This program is free software; you can redistribute it and/or modify  *   *   This program is free software; you can redistribute it and/or modify  *
10   *   it under the terms of the GNU General Public License as published by  *   *   it under the terms of the GNU General Public License as published by  *
# Line 24  Line 25 
25  #include "../../common/Features.h"  #include "../../common/Features.h"
26  #include "Synthesizer.h"  #include "Synthesizer.h"
27  #include "Profiler.h"  #include "Profiler.h"
28    #include "Engine.h"
29    #include "EngineChannel.h"
30    
31  #include "Voice.h"  #include "Voice.h"
32    
33  namespace LinuxSampler { namespace gig {  namespace LinuxSampler { namespace gig {
34    
     const float Voice::FILTER_CUTOFF_COEFF(CalculateFilterCutoffCoeff());  
   
     float Voice::CalculateFilterCutoffCoeff() {  
         return log(CONFIG_FILTER_CUTOFF_MAX / CONFIG_FILTER_CUTOFF_MIN);  
     }  
   
35      Voice::Voice() {      Voice::Voice() {
36          pEngine     = NULL;          pEngine = NULL;
37          pDiskThread = NULL;          pEG1 = &EG1;
         PlaybackState = playback_state_end;  
         pLFO1 = new LFOUnsigned(1.0f);  // amplitude EG (0..1 range)  
         pLFO2 = new LFOUnsigned(1.0f);  // filter EG (0..1 range)  
         pLFO3 = new LFOSigned(1200.0f); // pitch EG (-1200..+1200 range)  
         KeyGroup = 0;  
         SynthesisMode = 0; // set all mode bits to 0 first  
         // select synthesis implementation (currently either pure C++ or MMX+SSE(1))  
         #if CONFIG_ASM && ARCH_X86  
         SYNTHESIS_MODE_SET_IMPLEMENTATION(SynthesisMode, Features::supportsMMX() && Features::supportsSSE());  
         #else  
         SYNTHESIS_MODE_SET_IMPLEMENTATION(SynthesisMode, false);  
         #endif  
         SYNTHESIS_MODE_SET_PROFILING(SynthesisMode, Profiler::isEnabled());  
   
         finalSynthesisParameters.filterLeft.Reset();  
         finalSynthesisParameters.filterRight.Reset();  
38      }      }
39    
40      Voice::~Voice() {      Voice::~Voice() {
         if (pLFO1) delete pLFO1;  
         if (pLFO2) delete pLFO2;  
         if (pLFO3) delete pLFO3;  
41      }      }
42    
43      void Voice::SetEngine(Engine* pEngine) {      EngineChannel* Voice::GetGigEngineChannel() {
44          this->pEngine     = pEngine;          return static_cast<EngineChannel*>(pEngineChannel);
45          this->pDiskThread = pEngine->pDiskThread;      }
46    
47        void Voice::SetEngine(LinuxSampler::Engine* pEngine) {
48            Engine* engine = static_cast<Engine*>(pEngine);
49            this->pEngine     = engine;
50            this->pDiskThread = engine->pDiskThread;
51          dmsg(6,("Voice::SetEngine()\n"));          dmsg(6,("Voice::SetEngine()\n"));
52      }      }
53    
54      /**      Voice::SampleInfo Voice::GetSampleInfo() {
55       *  Initializes and triggers the voice, a disk stream will be launched if          SampleInfo si;
56       *  needed.          si.SampleRate       = pSample->SamplesPerSecond;
57       *          si.ChannelCount     = pSample->Channels;
58       *  @param pEngineChannel - engine channel on which this voice was ordered          si.FrameSize        = pSample->FrameSize;
59       *  @param itNoteOnEvent  - event that caused triggering of this voice          si.BitDepth         = pSample->BitDepth;
60       *  @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;  
         }  
61    
62          // select channel mode (mono or stereo)          si.HasLoops       = pRegion->SampleLoops;
63          SYNTHESIS_MODE_SET_CHANNELS(SynthesisMode, pSample->Channels == 2);          si.LoopStart      = (si.HasLoops) ? pRegion->pSampleLoops[0].LoopStart  : 0;
64            si.LoopLength     = (si.HasLoops) ? pRegion->pSampleLoops[0].LoopLength : 0;
65            si.LoopPlayCount  = pSample->LoopPlayCount;
66            si.Unpitched      = !pRegion->PitchTrack;
67    
68          // get starting crossfade volume level          return si;
69          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;  
         }  
70    
71          PanLeft  = 1.0f - float(RTMath::Max(pDimRgn->Pan, 0)) /  63.0f;      Voice::RegionInfo Voice::GetRegionInfo() {
72          PanRight = 1.0f - float(RTMath::Min(pDimRgn->Pan, 0)) / -64.0f;          RegionInfo ri;
73            ri.UnityNote = pRegion->UnityNote;
74            ri.FineTune  = pRegion->FineTune;
75            ri.Pan       = pRegion->Pan;
76            ri.SampleStartOffset = pRegion->SampleStartOffset;
77    
78          finalSynthesisParameters.dPos = pDimRgn->SampleStartOffset; // offset where we should start playback of sample (0 - 2000 sample points)          ri.EG1PreAttack        = pRegion->EG1PreAttack;
79            ri.EG1Attack           = pRegion->EG1Attack;
80            ri.EG1Hold             = pRegion->EG1Hold;
81            ri.EG1Decay1           = pRegion->EG1Decay1;
82            ri.EG1Decay2           = pRegion->EG1Decay2;
83            ri.EG1Sustain          = pRegion->EG1Sustain;
84            ri.EG1InfiniteSustain  = pRegion->EG1InfiniteSustain;
85            ri.EG1Release          = pRegion->EG1Release;
86    
87          // Check if the sample needs disk streaming or is too short for that          ri.EG2PreAttack        = pRegion->EG2PreAttack;
88          long cachedsamples = pSample->GetCache().Size / pSample->FrameSize;          ri.EG2Attack           = pRegion->EG2Attack;
89          DiskVoice          = cachedsamples < pSample->SamplesTotal;          ri.EG2Decay1           = pRegion->EG2Decay1;
90            ri.EG2Decay2           = pRegion->EG2Decay2;
91            ri.EG2Sustain          = pRegion->EG2Sustain;
92            ri.EG2InfiniteSustain  = pRegion->EG2InfiniteSustain;
93            ri.EG2Release          = pRegion->EG2Release;
94    
95          if (DiskVoice) { // voice to be streamed from disk          ri.EG3Attack     = pRegion->EG3Attack;
96              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;
97            ri.VCFEnabled    = pRegion->VCFEnabled;
98            ri.VCFType       = pRegion->VCFType;
99            ri.VCFResonance  = pRegion->VCFResonance;
100    
101              // 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;  
                 loop.uiTotalCycles = pSample->LoopPlayCount;  
                 loop.uiCyclesLeft  = pSample->LoopPlayCount;  
                 loop.uiStart       = pSample->LoopStart;  
                 loop.uiEnd         = pSample->LoopEnd;  
                 loop.uiSize        = pSample->LoopSize;  
             }  
             else RAMLoop = false;  
102    
103              if (pDiskThread->OrderNewStream(&DiskStreamRef, pSample, MaxRAMPos, !RAMLoop) < 0) {          return ri;
104                  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;  
                 loop.uiCyclesLeft = pSample->LoopPlayCount;  
             }  
             else RAMLoop = false;  
             dmsg(4,("RAM only voice launched (Looping: %s)\n", (RAMLoop) ? "yes" : "no"));  
         }  
105    
106        Voice::InstrumentInfo Voice::GetInstrumentInfo() {
107            InstrumentInfo ii;
108            ii.FineTune = GetGigEngineChannel()->pInstrument->FineTune;
109            ii.PitchbendRange = GetGigEngineChannel()->pInstrument->PitchbendRange;
110    
111          // calculate initial pitch value          return ii;
112          {      }
             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;  
113    
114              // calculate influence of EG1 controller on EG1's parameters      double Voice::GetSampleAttenuation() {
115              // (eg1attack is different from the others)          return pRegion->SampleAttenuation;
116              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);  
         }  
117    
118        double Voice::GetVelocityAttenuation(uint8_t MIDIKeyVelocity) {
119            return pRegion->GetVelocityAttenuation(MIDIKeyVelocity);
120        }
121    
122          // setup EG 2 (VCF Cutoff EG)      double Voice::GetVelocityRelease(uint8_t MIDIKeyVelocity) {
123          {          return pRegion->GetVelocityRelease(MIDIKeyVelocity);
124              // 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;  
125    
126              // calculate influence of EG2 controller on EG2's parameters      void Voice::ProcessCCEvent(RTList<Event>::Iterator& itEvent) {
127              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
128              double eg2decay   = (pDimRgn->EG2ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pDimRgn->EG2ControllerDecayInfluence)   * eg2controllervalue : 1.0;              if (pRegion->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&
129              double eg2release = (pDimRgn->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pDimRgn->EG2ControllerReleaseInfluence) * eg2controllervalue : 1.0;                  itEvent->Param.CC.Controller == pRegion->AttenuationController.controller_number) {
130                    CrossfadeSmoother.update(AbstractEngine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.CC.Value)]);
131              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);  
132          }          }
133        }
134    
135        void Voice::ProcessCutoffEvent(RTList<Event>::Iterator& itEvent) {
136            int ccvalue = itEvent->Param.CC.Value;
137            if (VCFCutoffCtrl.value == ccvalue) return;
138            VCFCutoffCtrl.value == ccvalue;
139            if (pRegion->VCFCutoffControllerInvert)  ccvalue = 127 - ccvalue;
140            if (ccvalue < pRegion->VCFVelocityScale) ccvalue = pRegion->VCFVelocityScale;
141            float cutoff = CutoffBase * float(ccvalue);
142            if (cutoff > 127.0f) cutoff = 127.0f;
143    
144            VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of fFinalCutoff next time
145            fFinalCutoff = cutoff;
146        }
147    
148          // setup EG 3 (VCO EG)      double Voice::CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity) {
149          {          float crossfadeVolume;
150            double eg3depth = RTMath::CentsToFreqRatio(pDimRgn->EG3Depth);          switch (pRegion->AttenuationController.type) {
151            EG3.trigger(eg3depth, pDimRgn->EG3Attack, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);              case ::gig::attenuation_ctrl_t::type_channelaftertouch:
152                    crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[128])];
153                    break;
154                case ::gig::attenuation_ctrl_t::type_velocity:
155                    crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(MIDIKeyVelocity)];
156                    break;
157                case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate
158                    crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[pRegion->AttenuationController.controller_number])];
159                    break;
160                case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined
161                default:
162                    crossfadeVolume = 1.0f;
163          }          }
164    
165            return crossfadeVolume;
166        }
167    
168          // setup LFO 1 (VCA LFO)      double Voice::GetEG1ControllerValue(uint8_t MIDIKeyVelocity) {
169          {          double eg1controllervalue = 0;
170              uint16_t lfo1_internal_depth;          switch (pRegion->EG1Controller.type) {
171              switch (pDimRgn->LFO1Controller) {              case ::gig::eg1_ctrl_t::type_none: // no controller defined
172                  case ::gig::lfo1_ctrl_internal:                  eg1controllervalue = 0;
173                      lfo1_internal_depth  = pDimRgn->LFO1InternalDepth;                  break;
174                      pLFO1->ExtController = 0; // no external controller              case ::gig::eg1_ctrl_t::type_channelaftertouch:
175                      bLFO1Enabled         = (lfo1_internal_depth > 0);                  eg1controllervalue = GetGigEngineChannel()->ControllerTable[128];
176                      break;                  break;
177                  case ::gig::lfo1_ctrl_modwheel:              case ::gig::eg1_ctrl_t::type_velocity:
178                      lfo1_internal_depth  = 0;                  eg1controllervalue = MIDIKeyVelocity;
179                      pLFO1->ExtController = 1; // MIDI controller 1                  break;
180                      bLFO1Enabled         = (pDimRgn->LFO1ControlDepth > 0);              case ::gig::eg1_ctrl_t::type_controlchange: // MIDI control change controller
181                      break;                  eg1controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG1Controller.controller_number];
182                  case ::gig::lfo1_ctrl_breath:                  break;
                     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);  
183          }          }
184            if (pRegion->EG1ControllerInvert) eg1controllervalue = 127 - eg1controllervalue;
185    
186            return eg1controllervalue;
187        }
188    
189          // setup LFO 2 (VCF Cutoff LFO)      Voice::EGInfo Voice::CalculateEG1ControllerInfluence(double eg1ControllerValue) {
190          {          EGInfo eg;
191              uint16_t lfo2_internal_depth;          // (eg1attack is different from the others)
192              switch (pDimRgn->LFO2Controller) {          eg.Attack  = (pRegion->EG1ControllerAttackInfluence)  ?
193                  case ::gig::lfo2_ctrl_internal:              1 + 0.031 * (double) (pRegion->EG1ControllerAttackInfluence == 1 ?
194                      lfo2_internal_depth  = pDimRgn->LFO2InternalDepth;                                    1 : 1 << pRegion->EG1ControllerAttackInfluence) * eg1ControllerValue : 1.0;
195                      pLFO2->ExtController = 0; // no external controller          eg.Decay   = (pRegion->EG1ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerDecayInfluence)   * eg1ControllerValue : 1.0;
196                      bLFO2Enabled         = (lfo2_internal_depth > 0);          eg.Release = (pRegion->EG1ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerReleaseInfluence) * eg1ControllerValue : 1.0;
                     break;  
                 case ::gig::lfo2_ctrl_modwheel:  
                     lfo2_internal_depth  = 0;  
                     pLFO2->ExtController = 1; // MIDI controller 1  
                     bLFO2Enabled         = (pDimRgn->LFO2ControlDepth > 0);  
                     break;  
                 case ::gig::lfo2_ctrl_foot:  
                     lfo2_internal_depth  = 0;  
                     pLFO2->ExtController = 4; // MIDI controller 4  
                     bLFO2Enabled         = (pDimRgn->LFO2ControlDepth > 0);  
                     break;  
                 case ::gig::lfo2_ctrl_internal_modwheel:  
                     lfo2_internal_depth  = pDimRgn->LFO2InternalDepth;  
                     pLFO2->ExtController = 1; // MIDI controller 1  
                     bLFO2Enabled         = (lfo2_internal_depth > 0 || pDimRgn->LFO2ControlDepth > 0);  
                     break;  
                 case ::gig::lfo2_ctrl_internal_foot:  
                     lfo2_internal_depth  = pDimRgn->LFO2InternalDepth;  
                     pLFO2->ExtController = 4; // MIDI controller 4  
                     bLFO2Enabled         = (lfo2_internal_depth > 0 || pDimRgn->LFO2ControlDepth > 0);  
                     break;  
                 default:  
                     lfo2_internal_depth  = 0;  
                     pLFO2->ExtController = 0; // no external controller  
                     bLFO2Enabled         = false;  
             }  
             if (bLFO2Enabled) pLFO2->trigger(pDimRgn->LFO2Frequency,  
                                              start_level_max,  
                                              lfo2_internal_depth,  
                                              pDimRgn->LFO2ControlDepth,  
                                              pDimRgn->LFO2FlipPhase,  
                                              pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
         }  
197    
198            return eg;
199        }
200    
201          // setup LFO 3 (VCO LFO)      double Voice::GetEG2ControllerValue(uint8_t MIDIKeyVelocity) {
202          {          double eg2controllervalue = 0;
203              uint16_t lfo3_internal_depth;          switch (pRegion->EG2Controller.type) {
204              switch (pDimRgn->LFO3Controller) {              case ::gig::eg2_ctrl_t::type_none: // no controller defined
205                  case ::gig::lfo3_ctrl_internal:                  eg2controllervalue = 0;
206                      lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;                  break;
207                      pLFO3->ExtController = 0; // no external controller              case ::gig::eg2_ctrl_t::type_channelaftertouch:
208                      bLFO3Enabled         = (lfo3_internal_depth > 0);                  eg2controllervalue = GetGigEngineChannel()->ControllerTable[128];
209                      break;                  break;
210                  case ::gig::lfo3_ctrl_modwheel:              case ::gig::eg2_ctrl_t::type_velocity:
211                      lfo3_internal_depth  = 0;                  eg2controllervalue = MIDIKeyVelocity;
212                      pLFO3->ExtController = 1; // MIDI controller 1                  break;
213                      bLFO3Enabled         = (pDimRgn->LFO3ControlDepth > 0);              case ::gig::eg2_ctrl_t::type_controlchange: // MIDI control change controller
214                      break;                  eg2controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG2Controller.controller_number];
215                  case ::gig::lfo3_ctrl_aftertouch:                  break;
                     lfo3_internal_depth  = 0;  
                     pLFO3->ExtController = 0; // TODO: aftertouch not implemented yet  
                     bLFO3Enabled         = false; // see TODO comment in line above  
                     break;  
                 case ::gig::lfo3_ctrl_internal_modwheel:  
                     lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;  
                     pLFO3->ExtController = 1; // MIDI controller 1  
                     bLFO3Enabled         = (lfo3_internal_depth > 0 || pDimRgn->LFO3ControlDepth > 0);  
                     break;  
                 case ::gig::lfo3_ctrl_internal_aftertouch:  
                     lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;  
                     pLFO1->ExtController = 0; // TODO: aftertouch not implemented yet  
                     bLFO3Enabled         = (lfo3_internal_depth > 0 /*|| pDimRgn->LFO3ControlDepth > 0*/); // see TODO comment in line above  
                     break;  
                 default:  
                     lfo3_internal_depth  = 0;  
                     pLFO3->ExtController = 0; // no external controller  
                     bLFO3Enabled         = false;  
             }  
             if (bLFO3Enabled) pLFO3->trigger(pDimRgn->LFO3Frequency,  
                                              start_level_mid,  
                                              lfo3_internal_depth,  
                                              pDimRgn->LFO3ControlDepth,  
                                              false,  
                                              pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
216          }          }
217            if (pRegion->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue;
218    
219            return eg2controllervalue;
220        }
221    
222          #if CONFIG_FORCE_FILTER      Voice::EGInfo Voice::CalculateEG2ControllerInfluence(double eg2ControllerValue) {
223          const bool bUseFilter = true;          EGInfo eg;
224          #else // use filter only if instrument file told so          eg.Attack  = (pRegion->EG2ControllerAttackInfluence)  ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerAttackInfluence)  * eg2ControllerValue : 1.0;
225          const bool bUseFilter = pDimRgn->VCFEnabled;          eg.Decay   = (pRegion->EG2ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerDecayInfluence)   * eg2ControllerValue : 1.0;
226          #endif // CONFIG_FORCE_FILTER          eg.Release = (pRegion->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerReleaseInfluence) * eg2ControllerValue : 1.0;
         SYNTHESIS_MODE_SET_FILTER(SynthesisMode, bUseFilter);  
         if (bUseFilter) {  
             #ifdef CONFIG_OVERRIDE_CUTOFF_CTRL  
             VCFCutoffCtrl.controller = CONFIG_OVERRIDE_CUTOFF_CTRL;  
             #else // use the one defined in the instrument file  
             switch (pDimRgn->VCFCutoffController) {  
                 case ::gig::vcf_cutoff_ctrl_modwheel:  
                     VCFCutoffCtrl.controller = 1;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_effect1:  
                     VCFCutoffCtrl.controller = 12;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_effect2:  
                     VCFCutoffCtrl.controller = 13;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_breath:  
                     VCFCutoffCtrl.controller = 2;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_foot:  
                     VCFCutoffCtrl.controller = 4;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_sustainpedal:  
                     VCFCutoffCtrl.controller = 64;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_softpedal:  
                     VCFCutoffCtrl.controller = 67;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_genpurpose7:  
                     VCFCutoffCtrl.controller = 82;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_genpurpose8:  
                     VCFCutoffCtrl.controller = 83;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_aftertouch: //TODO: not implemented yet  
                 case ::gig::vcf_cutoff_ctrl_none:  
                 default:  
                     VCFCutoffCtrl.controller = 0;  
                     break;  
             }  
             #endif // CONFIG_OVERRIDE_CUTOFF_CTRL  
227    
228              #ifdef CONFIG_OVERRIDE_RESONANCE_CTRL          return eg;
229              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  
230    
231              #ifndef CONFIG_OVERRIDE_FILTER_TYPE      void Voice::InitLFO1() {
232              finalSynthesisParameters.filterLeft.SetType(pDimRgn->VCFType);          uint16_t lfo1_internal_depth;
233              finalSynthesisParameters.filterRight.SetType(pDimRgn->VCFType);          switch (pRegion->LFO1Controller) {
234              #else // override filter type              case ::gig::lfo1_ctrl_internal:
235              FilterLeft.SetType(CONFIG_OVERRIDE_FILTER_TYPE);                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
236              FilterRight.SetType(CONFIG_OVERRIDE_FILTER_TYPE);                  pLFO1->ExtController = 0; // no external controller
237              #endif // CONFIG_OVERRIDE_FILTER_TYPE                  bLFO1Enabled         = (lfo1_internal_depth > 0);
238                    break;
239              VCFCutoffCtrl.value    = pEngineChannel->ControllerTable[VCFCutoffCtrl.controller];              case ::gig::lfo1_ctrl_modwheel:
240              VCFResonanceCtrl.value = pEngineChannel->ControllerTable[VCFResonanceCtrl.controller];                  lfo1_internal_depth  = 0;
241                    pLFO1->ExtController = 1; // MIDI controller 1
242              // calculate cutoff frequency                  bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
243              float cutoff = pDimRgn->GetVelocityCutoff(itNoteOnEvent->Param.Note.Velocity);                  break;
244              if (pDimRgn->VCFKeyboardTracking) {              case ::gig::lfo1_ctrl_breath:
245                  cutoff *= exp((itNoteOnEvent->Param.Note.Key - pDimRgn->VCFKeyboardTrackingBreakpoint) * 0.057762265f); // (ln(2) / 12)                  lfo1_internal_depth  = 0;
246              }                  pLFO1->ExtController = 2; // MIDI controller 2
247              CutoffBase = cutoff;                  bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
248                    break;
249                case ::gig::lfo1_ctrl_internal_modwheel:
250                    lfo1_internal_depth  = pRegion->LFO1InternalDepth;
251                    pLFO1->ExtController = 1; // MIDI controller 1
252                    bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
253                    break;
254                case ::gig::lfo1_ctrl_internal_breath:
255                    lfo1_internal_depth  = pRegion->LFO1InternalDepth;
256                    pLFO1->ExtController = 2; // MIDI controller 2
257                    bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
258                    break;
259                default:
260                    lfo1_internal_depth  = 0;
261                    pLFO1->ExtController = 0; // no external controller
262                    bLFO1Enabled         = false;
263            }
264            if (bLFO1Enabled) {
265                pLFO1->trigger(pRegion->LFO1Frequency,
266                               start_level_min,
267                               lfo1_internal_depth,
268                               pRegion->LFO1ControlDepth,
269                               pRegion->LFO1FlipPhase,
270                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
271                pLFO1->update(pLFO1->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO1->ExtController] : 0);
272            }
273        }
274    
275              int cvalue;      void Voice::InitLFO2() {
276              if (VCFCutoffCtrl.controller) {          uint16_t lfo2_internal_depth;
277                  cvalue = pEngineChannel->ControllerTable[VCFCutoffCtrl.controller];          switch (pRegion->LFO2Controller) {
278                  if (pDimRgn->VCFCutoffControllerInvert) cvalue = 127 - cvalue;              case ::gig::lfo2_ctrl_internal:
279                  if (cvalue < pDimRgn->VCFVelocityScale) cvalue = pDimRgn->VCFVelocityScale;                  lfo2_internal_depth  = pRegion->LFO2InternalDepth;
280              }                  pLFO2->ExtController = 0; // no external controller
281              else {                  bLFO2Enabled         = (lfo2_internal_depth > 0);
282                  cvalue = pDimRgn->VCFCutoff;                  break;
283              }              case ::gig::lfo2_ctrl_modwheel:
284              cutoff *= float(cvalue) * 0.00787402f; // (1 / 127)                  lfo2_internal_depth  = 0;
285              if (cutoff > 1.0) cutoff = 1.0;                  pLFO2->ExtController = 1; // MIDI controller 1
286              cutoff = exp(cutoff * FILTER_CUTOFF_COEFF) * CONFIG_FILTER_CUTOFF_MIN;                  bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
287                    break;
288              // calculate resonance              case ::gig::lfo2_ctrl_foot:
289              float resonance = (float) VCFResonanceCtrl.value * 0.00787f;   // 0.0..1.0                  lfo2_internal_depth  = 0;
290              if (pDimRgn->VCFKeyboardTracking) {                  pLFO2->ExtController = 4; // MIDI controller 4
291                  resonance += (float) (itNoteOnEvent->Param.Note.Key - pDimRgn->VCFKeyboardTrackingBreakpoint) * 0.00787f;                  bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
292              }                  break;
293              Constrain(resonance, 0.0, 1.0); // correct resonance if outside allowed value range (0.0..1.0)              case ::gig::lfo2_ctrl_internal_modwheel:
294                    lfo2_internal_depth  = pRegion->LFO2InternalDepth;
295                    pLFO2->ExtController = 1; // MIDI controller 1
296                    bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
297                    break;
298                case ::gig::lfo2_ctrl_internal_foot:
299                    lfo2_internal_depth  = pRegion->LFO2InternalDepth;
300                    pLFO2->ExtController = 4; // MIDI controller 4
301                    bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
302                    break;
303                default:
304                    lfo2_internal_depth  = 0;
305                    pLFO2->ExtController = 0; // no external controller
306                    bLFO2Enabled         = false;
307            }
308            if (bLFO2Enabled) {
309                pLFO2->trigger(pRegion->LFO2Frequency,
310                               start_level_max,
311                               lfo2_internal_depth,
312                               pRegion->LFO2ControlDepth,
313                               pRegion->LFO2FlipPhase,
314                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
315                pLFO2->update(pLFO2->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO2->ExtController] : 0);
316            }
317        }
318    
319        void Voice::InitLFO3() {
320            uint16_t lfo3_internal_depth;
321            switch (pRegion->LFO3Controller) {
322                case ::gig::lfo3_ctrl_internal:
323                    lfo3_internal_depth  = pRegion->LFO3InternalDepth;
324                    pLFO3->ExtController = 0; // no external controller
325                    bLFO3Enabled         = (lfo3_internal_depth > 0);
326                    break;
327                case ::gig::lfo3_ctrl_modwheel:
328                    lfo3_internal_depth  = 0;
329                    pLFO3->ExtController = 1; // MIDI controller 1
330                    bLFO3Enabled         = (pRegion->LFO3ControlDepth > 0);
331                    break;
332                case ::gig::lfo3_ctrl_aftertouch:
333                    lfo3_internal_depth  = 0;
334                    pLFO3->ExtController = 128;
335                    bLFO3Enabled         = true;
336                    break;
337                case ::gig::lfo3_ctrl_internal_modwheel:
338                    lfo3_internal_depth  = pRegion->LFO3InternalDepth;
339                    pLFO3->ExtController = 1; // MIDI controller 1
340                    bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
341                    break;
342                case ::gig::lfo3_ctrl_internal_aftertouch:
343                    lfo3_internal_depth  = pRegion->LFO3InternalDepth;
344                    pLFO1->ExtController = 128;
345                    bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
346                    break;
347                default:
348                    lfo3_internal_depth  = 0;
349                    pLFO3->ExtController = 0; // no external controller
350                    bLFO3Enabled         = false;
351            }
352            if (bLFO3Enabled) {
353                pLFO3->trigger(pRegion->LFO3Frequency,
354                               start_level_mid,
355                               lfo3_internal_depth,
356                               pRegion->LFO3ControlDepth,
357                               false,
358                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
359                pLFO3->update(pLFO3->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO3->ExtController] : 0);
360            }
361        }
362    
363              VCFCutoffCtrl.fvalue    = cutoff - CONFIG_FILTER_CUTOFF_MIN;      float Voice::CalculateCutoffBase(uint8_t MIDIKeyVelocity) {
364              VCFResonanceCtrl.fvalue = resonance;          float cutoff = pRegion->GetVelocityCutoff(MIDIKeyVelocity);
365            if (pRegion->VCFKeyboardTracking) {
366                cutoff *= exp((MIDIKeyVelocity - pRegion->VCFKeyboardTrackingBreakpoint) * 0.057762265f); // (ln(2) / 12)
367            }
368            return cutoff;
369        }
370    
371        float Voice::CalculateFinalCutoff(float cutoffBase) {
372            int cvalue;
373            if (VCFCutoffCtrl.controller) {
374                cvalue = GetGigEngineChannel()->ControllerTable[VCFCutoffCtrl.controller];
375                if (pRegion->VCFCutoffControllerInvert) cvalue = 127 - cvalue;
376                // VCFVelocityScale in this case means Minimum cutoff
377                if (cvalue < pRegion->VCFVelocityScale) cvalue = pRegion->VCFVelocityScale;
378          }          }
379          else {          else {
380              VCFCutoffCtrl.controller    = 0;              cvalue = pRegion->VCFCutoff;
             VCFResonanceCtrl.controller = 0;  
381          }          }
382            float fco = cutoffBase * float(cvalue);
383            if (fco > 127.0f) fco = 127.0f;
384    
385          return 0; // success          return fco;
386      }      }
387    
388      /**      uint8_t Voice::GetVCFCutoffCtrl() {
389       *  Renders the audio data for this voice for the current audio fragment.          uint8_t ctrl;
390       *  The sample input data can either come from RAM (cached sample or sample          switch (pRegion->VCFCutoffController) {
391       *  part) or directly from disk. The output signal will be rendered by              case ::gig::vcf_cutoff_ctrl_modwheel:
392       *  resampling / interpolation. If this voice is a disk streaming voice and                  ctrl = 1;
393       *  the voice completely played back the cached RAM part of the sample, it                  break;
394       *  will automatically switch to disk playback for the next RenderAudio()              case ::gig::vcf_cutoff_ctrl_effect1:
395       *  call.                  ctrl = 12;
396       *                  break;
397       *  @param Samples - number of samples to be rendered in this audio fragment cycle              case ::gig::vcf_cutoff_ctrl_effect2:
398       */                  ctrl = 13;
399      void Voice::Render(uint Samples) {                  break;
400                case ::gig::vcf_cutoff_ctrl_breath:
401          // select default values for synthesis mode bits                  ctrl = 2;
402          SYNTHESIS_MODE_SET_LOOP(SynthesisMode, false);                  break;
403                case ::gig::vcf_cutoff_ctrl_foot:
404          switch (this->PlaybackState) {                  ctrl = 4;
405                    break;
406              case playback_state_init:              case ::gig::vcf_cutoff_ctrl_sustainpedal:
407                  this->PlaybackState = playback_state_ram; // we always start playback from RAM cache and switch then to disk if needed                  ctrl = 64;
408                  // no break - continue with playback_state_ram                  break;
409                case ::gig::vcf_cutoff_ctrl_softpedal:
410              case playback_state_ram: {                  ctrl = 67;
411                      if (RAMLoop) SYNTHESIS_MODE_SET_LOOP(SynthesisMode, true); // enable looping                  break;
412                case ::gig::vcf_cutoff_ctrl_genpurpose7:
413                      // render current fragment                  ctrl = 82;
414                      Synthesize(Samples, (sample_t*) pSample->GetCache().pStart, Delay);                  break;
415                case ::gig::vcf_cutoff_ctrl_genpurpose8:
416                      if (DiskVoice) {                  ctrl = 83;
417                          // check if we reached the allowed limit of the sample RAM cache                  break;
418                          if (finalSynthesisParameters.dPos > MaxRAMPos) {              case ::gig::vcf_cutoff_ctrl_aftertouch:
419                              dmsg(5,("Voice: switching to disk playback (Pos=%f)\n", finalSynthesisParameters.dPos));                  ctrl = 128;
420                              this->PlaybackState = playback_state_disk;                  break;
421                          }              case ::gig::vcf_cutoff_ctrl_none:
422                      } else if (finalSynthesisParameters.dPos >= pSample->GetCache().Size / pSample->FrameSize) {              default:
423                          this->PlaybackState = playback_state_end;                  ctrl = 0;
424                      }                  break;
                 }  
                 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, finalSynthesisParameters.dPos, finalSynthesisParameters.fFinalPitch, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
                 EG2.update(EGADSR::event_release, finalSynthesisParameters.dPos, finalSynthesisParameters.fFinalPitch, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
             } else if (itEvent->Type == Event::type_cancel_release) {  
                 EG1.update(EGADSR::event_cancel_release, finalSynthesisParameters.dPos, finalSynthesisParameters.fFinalPitch, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
                 EG2.update(EGADSR::event_cancel_release, finalSynthesisParameters.dPos, finalSynthesisParameters.fFinalPitch, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
             }  
425          }          }
426    
427            return ctrl;
428      }      }
429    
430      /**      uint8_t Voice::GetVCFResonanceCtrl() {
431       * Process given list of MIDI control change and pitch bend events for          uint8_t ctrl;
432       * the given time.          switch (pRegion->VCFResonanceController) {
433       *              case ::gig::vcf_res_ctrl_genpurpose3:
434       * @param itEvent - iterator pointing to the next event to be processed                  ctrl = 18;
435       * @param End     - youngest time stamp where processing should be stopped                  break;
436       */              case ::gig::vcf_res_ctrl_genpurpose4:
437      void Voice::processCCEvents(RTList<Event>::Iterator& itEvent, uint End) {                  ctrl = 19;
438          for (; itEvent && itEvent->FragmentPos() <= End; ++itEvent) {                  break;
439              if (itEvent->Type == Event::type_control_change &&              case ::gig::vcf_res_ctrl_genpurpose5:
440                  itEvent->Param.CC.Controller) { // if (valid) MIDI control change event                  ctrl = 80;
441                  if (itEvent->Param.CC.Controller == VCFCutoffCtrl.controller) {                  break;
442                      processCutoffEvent(itEvent);              case ::gig::vcf_res_ctrl_genpurpose6:
443                  }                  ctrl = 81;
444                  if (itEvent->Param.CC.Controller == VCFResonanceCtrl.controller) {                  break;
445                      processResonanceEvent(itEvent);              case ::gig::vcf_res_ctrl_none:
446                  }              default:
447                  if (itEvent->Param.CC.Controller == pLFO1->ExtController) {                  ctrl = 0;
                     pLFO1->update(itEvent->Param.CC.Value);  
                 }  
                 if (itEvent->Param.CC.Controller == pLFO2->ExtController) {  
                     pLFO2->update(itEvent->Param.CC.Value);  
                 }  
                 if (itEvent->Param.CC.Controller == pLFO3->ExtController) {  
                     pLFO3->update(itEvent->Param.CC.Value);  
                 }  
                 if (pDimRgn->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&  
                     itEvent->Param.CC.Controller == pDimRgn->AttenuationController.controller_number) {  
                     processCrossFadeEvent(itEvent);  
                 }  
             } else if (itEvent->Type == Event::type_pitchbend) { // if pitch bend event  
                 processPitchEvent(itEvent);  
             }  
448          }          }
     }  
449    
450      void Voice::processPitchEvent(RTList<Event>::Iterator& itEvent) {          return ctrl;
         const float pitch = RTMath::CentsToFreqRatio(((double) itEvent->Param.Pitch.Pitch / 8192.0) * 200.0); // +-two semitones = +-200 cents  
         finalSynthesisParameters.fFinalPitch *= pitch;  
         PitchBend = pitch;  
     }  
   
     void Voice::processCrossFadeEvent(RTList<Event>::Iterator& itEvent) {  
         CrossfadeVolume = CrossfadeAttenuation(itEvent->Param.CC.Value);  
         #if CONFIG_PROCESS_MUTED_CHANNELS  
         const float effectiveVolume = CrossfadeVolume * Volume * (pEngineChannel->GetMute() ? 0 : pEngineChannel->GlobalVolume);  
         #else  
         const float effectiveVolume = CrossfadeVolume * Volume * pEngineChannel->GlobalVolume;  
         #endif  
         fFinalVolume = effectiveVolume;  
451      }      }
452    
453      void Voice::processCutoffEvent(RTList<Event>::Iterator& itEvent) {      void Voice::TriggerEG1(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
454          int ccvalue = itEvent->Param.CC.Value;          EG1.trigger(uint(RgnInfo.EG1PreAttack),
455          if (VCFCutoffCtrl.value == ccvalue) return;                      RgnInfo.EG1Attack * egInfo.Attack,
456          VCFCutoffCtrl.value == ccvalue;                      RgnInfo.EG1Hold,
457          if (pDimRgn->VCFCutoffControllerInvert)  ccvalue = 127 - ccvalue;                      RgnInfo.EG1Decay1 * egInfo.Decay * velrelease,
458          if (ccvalue < pDimRgn->VCFVelocityScale) ccvalue = pDimRgn->VCFVelocityScale;                      RgnInfo.EG1Decay2 * egInfo.Decay * velrelease,
459          float cutoff = CutoffBase * float(ccvalue) * 0.00787402f; // (1 / 127)                      RgnInfo.EG1InfiniteSustain,
460          if (cutoff > 1.0) cutoff = 1.0;                      uint(RgnInfo.EG1Sustain),
461          cutoff = exp(cutoff * FILTER_CUTOFF_COEFF) * CONFIG_FILTER_CUTOFF_MIN - CONFIG_FILTER_CUTOFF_MIN;                      RgnInfo.EG1Release * egInfo.Release * velrelease,
462          VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of fFinalCutoff next time                      velocityAttenuation,
463          fFinalCutoff = cutoff;                      sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
464      }      }
465    
466      void Voice::processResonanceEvent(RTList<Event>::Iterator& itEvent) {      void Voice::ProcessGroupEvent(RTList<Event>::Iterator& itEvent) {
467          // convert absolute controller value to differential          dmsg(4,("Voice %x processGroupEvents event type=%d", this, itEvent->Type));
         const int ctrldelta = itEvent->Param.CC.Value - VCFResonanceCtrl.value;  
         VCFResonanceCtrl.value = itEvent->Param.CC.Value;  
         const float resonancedelta = (float) ctrldelta * 0.00787f; // 0.0..1.0  
         fFinalResonance += resonancedelta;  
         // needed for initialization of parameter  
         VCFResonanceCtrl.fvalue = itEvent->Param.CC.Value * 0.00787f;  
     }  
   
     /**  
      *  Synthesizes the current audio fragment for this voice.  
      *  
      *  @param Samples - number of sample points to be rendered in this audio  
      *                   fragment cycle  
      *  @param pSrc    - pointer to input sample data  
      *  @param Skip    - number of sample points to skip in output buffer  
      */  
     void Voice::Synthesize(uint Samples, sample_t* pSrc, uint Skip) {  
         finalSynthesisParameters.pOutLeft  = &pEngineChannel->pOutputLeft[Skip];  
         finalSynthesisParameters.pOutRight = &pEngineChannel->pOutputRight[Skip];  
         finalSynthesisParameters.pSrc      = pSrc;  
   
         RTList<Event>::Iterator itCCEvent = pEngineChannel->pEvents->first();  
         RTList<Event>::Iterator itNoteEvent = pEngineChannel->pMIDIKeyInfo[MIDIKey].pEvents->first();  
   
         if (Skip) { // skip events that happened before this voice was triggered  
             while (itCCEvent && itCCEvent->FragmentPos() <= Skip) ++itCCEvent;  
             while (itNoteEvent && itNoteEvent->FragmentPos() <= Skip) ++itNoteEvent;  
         }  
   
         uint i = Skip;  
         while (i < Samples) {  
             int iSubFragmentEnd = RTMath::Min(i + CONFIG_DEFAULT_SUBFRAGMENT_SIZE, Samples);  
   
             // initialize all final synthesis parameters  
             finalSynthesisParameters.fFinalPitch = PitchBase * PitchBend;  
             #if CONFIG_PROCESS_MUTED_CHANNELS  
             fFinalVolume = this->Volume * this->CrossfadeVolume * (pEngineChannel->GetMute() ? 0 : pEngineChannel->GlobalVolume);  
             #else  
             fFinalVolume = this->Volume * this->CrossfadeVolume * pEngineChannel->GlobalVolume;  
             #endif  
             fFinalCutoff    = VCFCutoffCtrl.fvalue;  
             fFinalResonance = VCFResonanceCtrl.fvalue;  
   
             // process MIDI control change and pitchbend events for this subfragment  
             processCCEvents(itCCEvent, iSubFragmentEnd);  
   
             // process transition events (note on, note off & sustain pedal)  
             processTransitionEvents(itNoteEvent, iSubFragmentEnd);  
   
             // process envelope generators  
             switch (EG1.getSegmentType()) {  
                 case EGADSR::segment_lin:  
                     fFinalVolume *= EG1.processLin();  
                     break;  
                 case EGADSR::segment_exp:  
                     fFinalVolume *= EG1.processExp();  
                     break;  
                 case EGADSR::segment_end:  
                     fFinalVolume *= EG1.getLevel();  
                     break; // noop  
             }  
             switch (EG2.getSegmentType()) {  
                 case EGADSR::segment_lin:  
                     fFinalCutoff *= EG2.processLin();  
                     break;  
                 case EGADSR::segment_exp:  
                     fFinalCutoff *= EG2.processExp();  
                     break;  
                 case EGADSR::segment_end:  
                     fFinalCutoff *= EG2.getLevel();  
                     break; // noop  
             }  
             if (EG3.active()) finalSynthesisParameters.fFinalPitch *= RTMath::CentsToFreqRatio(EG3.render());  
   
             // process low frequency oscillators  
             if (bLFO1Enabled) fFinalVolume *= pLFO1->render();  
             if (bLFO2Enabled) fFinalCutoff *= pLFO2->render();  
             if (bLFO3Enabled) finalSynthesisParameters.fFinalPitch *= RTMath::CentsToFreqRatio(pLFO3->render());  
   
             // if filter enabled then update filter coefficients  
             if (SYNTHESIS_MODE_GET_FILTER(SynthesisMode)) {  
                 finalSynthesisParameters.filterLeft.SetParameters(fFinalCutoff, fFinalResonance, pEngine->SampleRate);  
                 finalSynthesisParameters.filterRight.SetParameters(fFinalCutoff, fFinalResonance, pEngine->SampleRate);  
             }  
468    
469              // do we need resampling?          // TODO: The SustainPedal condition could be wrong, maybe the
470              const float __PLUS_ONE_CENT  = 1.000577789506554859250142541782224725466f;          // check should be if this Voice is in release stage or is a
471              const float __MINUS_ONE_CENT = 0.9994225441413807496009516495583113737666f;          // release sample instead. Need to test this in GSt.
472              const bool bResamplingRequired = !(finalSynthesisParameters.fFinalPitch <= __PLUS_ONE_CENT &&          if (itEvent->Param.Note.Key != MIDIKey ||
473                                                 finalSynthesisParameters.fFinalPitch >= __MINUS_ONE_CENT);              !GetGigEngineChannel()->SustainPedal) {
474              SYNTHESIS_MODE_SET_INTERPOLATE(SynthesisMode, bResamplingRequired);              dmsg(4,("Voice %x - kill", this));
   
             // prepare final synthesis parameters structure  
             finalSynthesisParameters.fFinalVolumeLeft  = fFinalVolume * PanLeft;  
             finalSynthesisParameters.fFinalVolumeRight = fFinalVolume * PanRight;  
             finalSynthesisParameters.uiToGo            = iSubFragmentEnd - i;  
   
             // render audio for one subfragment  
             RunSynthesisFunction(SynthesisMode, &finalSynthesisParameters, &loop);  
   
             // increment envelopes' positions  
             if (EG1.active()) {  
                 EG1.increment(1);  
                 if (!EG1.toStageEndLeft()) EG1.update(EGADSR::event_stage_end, finalSynthesisParameters.dPos, finalSynthesisParameters.fFinalPitch, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
             }  
             if (EG2.active()) {  
                 EG2.increment(1);  
                 if (!EG2.toStageEndLeft()) EG2.update(EGADSR::event_stage_end, finalSynthesisParameters.dPos, finalSynthesisParameters.fFinalPitch, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
             }  
             EG3.increment(1);  
             if (!EG3.toEndLeft()) EG3.update(); // neutralize envelope coefficient if end reached  
475    
476              i = iSubFragmentEnd;              // kill the voice fast
477                pEG1->enterFadeOutStage();
478          }          }
479      }      }
480    
     /**  
      *  Immediately kill the voice. This method should not be used to kill  
      *  a normal, active voice, because it doesn't take care of things like  
      *  fading down the volume level to avoid clicks and regular processing  
      *  until the kill event actually occured!  
      *  
      *  @see Kill()  
      */  
     void Voice::KillImmediately() {  
         if (DiskVoice && DiskStreamRef.State != Stream::state_unused) {  
             pDiskThread->OrderDeletionOfStream(&DiskStreamRef);  
         }  
         Reset();  
     }  
   
     /**  
      *  Kill the voice in regular sense. Let the voice render audio until  
      *  the kill event actually occured and then fade down the volume level  
      *  very quickly and let the voice die finally. Unlike a normal release  
      *  of a voice, a kill process cannot be cancalled and is therefore  
      *  usually used for voice stealing and key group conflicts.  
      *  
      *  @param itKillEvent - event which caused the voice to be killed  
      */  
     void Voice::Kill(Pool<Event>::Iterator& itKillEvent) {  
         #if CONFIG_DEVMODE  
         if (!itKillEvent) dmsg(1,("gig::Voice::Kill(): ERROR, !itKillEvent !!!\n"));  
         if (itKillEvent && !itKillEvent.isValid()) dmsg(1,("gig::Voice::Kill(): ERROR, itKillEvent invalid !!!\n"));  
         #endif // CONFIG_DEVMODE  
   
         if (itTriggerEvent && itKillEvent->FragmentPos() <= itTriggerEvent->FragmentPos()) return;  
         this->itKillEvent = itKillEvent;  
     }  
   
481  }} // namespace LinuxSampler::gig  }} // namespace LinuxSampler::gig
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