/[svn]/linuxsampler/trunk/src/engines/gig/Voice.cpp
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revision 769 by schoenebeck, Sat Sep 3 11:14:30 2005 UTC revision 2382 by persson, Sun Dec 2 16:30:42 2012 UTC
# Line 3  Line 3 
3   *   LinuxSampler - modular, streaming capable sampler                     *   *   LinuxSampler - modular, streaming capable sampler                     *
4   *                                                                         *   *                                                                         *
5   *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *   *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *
6   *   Copyright (C) 2005 Christian Schoenebeck                              *   *   Copyright (C) 2005 - 2008 Christian Schoenebeck                       *
7     *   Copyright (C) 2009 - 2012 Christian Schoenebeck and Grigor Iliev      *
8   *                                                                         *   *                                                                         *
9   *   This program is free software; you can redistribute it and/or modify  *   *   This program is free software; you can redistribute it and/or modify  *
10   *   it under the terms of the GNU General Public License as published by  *   *   it under the terms of the GNU General Public License as published by  *
# Line 23  Line 24 
24    
25  #include "../../common/Features.h"  #include "../../common/Features.h"
26  #include "Synthesizer.h"  #include "Synthesizer.h"
27    #include "Profiler.h"
28    #include "Engine.h"
29    #include "EngineChannel.h"
30    
31  #include "Voice.h"  #include "Voice.h"
32    
33  namespace LinuxSampler { namespace gig {  namespace LinuxSampler { namespace gig {
34    
     const float Voice::FILTER_CUTOFF_COEFF(CalculateFilterCutoffCoeff());  
   
     float Voice::CalculateFilterCutoffCoeff() {  
         return log(CONFIG_FILTER_CUTOFF_MAX / CONFIG_FILTER_CUTOFF_MIN);  
     }  
   
35      Voice::Voice() {      Voice::Voice() {
36          pEngine     = NULL;          pEngine = NULL;
37          pDiskThread = NULL;          pEG1 = &EG1;
38          PlaybackState = playback_state_end;          pEG2 = &EG2;
         pLFO1 = new LFOUnsigned(1.0f);  // amplitude EG (0..1 range)  
         pLFO2 = new LFOUnsigned(1.0f);  // filter EG (0..1 range)  
         pLFO3 = new LFOSigned(1200.0f); // pitch EG (-1200..+1200 range)  
         KeyGroup = 0;  
         SynthesisMode = 0; // set all mode bits to 0 first  
         // select synthesis implementation (currently either pure C++ or MMX+SSE(1))  
         #if CONFIG_ASM && ARCH_X86  
         SYNTHESIS_MODE_SET_IMPLEMENTATION(SynthesisMode, Features::supportsMMX() && Features::supportsSSE());  
         #else  
         SYNTHESIS_MODE_SET_IMPLEMENTATION(SynthesisMode, false);  
         #endif  
         SYNTHESIS_MODE_SET_PROFILING(SynthesisMode, true);  
   
         FilterLeft.Reset();  
         FilterRight.Reset();  
39      }      }
40    
41      Voice::~Voice() {      Voice::~Voice() {
         if (pLFO1) delete pLFO1;  
         if (pLFO2) delete pLFO2;  
         if (pLFO3) delete pLFO3;  
42      }      }
43    
44      void Voice::SetEngine(Engine* pEngine) {      EngineChannel* Voice::GetGigEngineChannel() {
45          this->pEngine     = pEngine;          return static_cast<EngineChannel*>(pEngineChannel);
46          this->pDiskThread = pEngine->pDiskThread;      }
47    
48        void Voice::SetEngine(LinuxSampler::Engine* pEngine) {
49            Engine* engine = static_cast<Engine*>(pEngine);
50            this->pEngine     = engine;
51            this->pDiskThread = engine->pDiskThread;
52          dmsg(6,("Voice::SetEngine()\n"));          dmsg(6,("Voice::SetEngine()\n"));
53      }      }
54    
55      /**      Voice::SampleInfo Voice::GetSampleInfo() {
56       *  Initializes and triggers the voice, a disk stream will be launched if          SampleInfo si;
57       *  needed.          si.SampleRate       = pSample->SamplesPerSecond;
58       *          si.ChannelCount     = pSample->Channels;
59       *  @param pEngineChannel - engine channel on which this voice was ordered          si.FrameSize        = pSample->FrameSize;
60       *  @param itNoteOnEvent  - event that caused triggering of this voice          si.BitDepth         = pSample->BitDepth;
61       *  @param PitchBend      - MIDI detune factor (-8192 ... +8191)          si.TotalFrameCount  = pSample->SamplesTotal;
      *  @param pDimRgn        - points to the dimension region which provides sample wave(s) and articulation data  
      *  @param VoiceType      - type of this voice  
      *  @param iKeyGroup      - a value > 0 defines a key group in which this voice is member of  
      *  @returns 0 on success, a value < 0 if the voice wasn't triggered  
      *           (either due to an error or e.g. because no region is  
      *           defined for the given key)  
      */  
     int Voice::Trigger(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent, int PitchBend, ::gig::DimensionRegion* pDimRgn, type_t VoiceType, int iKeyGroup) {  
         this->pEngineChannel = pEngineChannel;  
         this->pDimRgn        = pDimRgn;  
   
         #if CONFIG_DEVMODE  
         if (itNoteOnEvent->FragmentPos() > pEngine->MaxSamplesPerCycle) { // just a sanity check for debugging  
             dmsg(1,("Voice::Trigger(): ERROR, TriggerDelay > Totalsamples\n"));  
         }  
         #endif // CONFIG_DEVMODE  
   
         Type            = VoiceType;  
         MIDIKey         = itNoteOnEvent->Param.Note.Key;  
         PlaybackState   = playback_state_init; // mark voice as triggered, but no audio rendered yet  
         Delay           = itNoteOnEvent->FragmentPos();  
         itTriggerEvent  = itNoteOnEvent;  
         itKillEvent     = Pool<Event>::Iterator();  
         KeyGroup        = iKeyGroup;  
         pSample         = pDimRgn->pSample; // sample won't change until the voice is finished  
   
         // calculate volume  
         const double velocityAttenuation = pDimRgn->GetVelocityAttenuation(itNoteOnEvent->Param.Note.Velocity);  
   
         Volume = velocityAttenuation / 32768.0f; // we downscale by 32768 to convert from int16 value range to DSP value range (which is -1.0..1.0)  
   
         Volume *= pDimRgn->SampleAttenuation;  
   
         // the volume of release triggered samples depends on note length  
         if (Type == type_release_trigger) {  
             float noteLength = float(pEngine->FrameTime + Delay -  
                                      pEngineChannel->pMIDIKeyInfo[MIDIKey].NoteOnTime) / pEngine->SampleRate;  
             float attenuation = 1 - 0.01053 * (256 >> pDimRgn->ReleaseTriggerDecay) * noteLength;  
             if (attenuation <= 0) return -1;  
             Volume *= attenuation;  
         }  
62    
63          // select channel mode (mono or stereo)          si.HasLoops       = pRegion->SampleLoops;
64          SYNTHESIS_MODE_SET_CHANNELS(SynthesisMode, pSample->Channels == 2);          si.LoopStart      = (si.HasLoops) ? pRegion->pSampleLoops[0].LoopStart  : 0;
65            si.LoopLength     = (si.HasLoops) ? pRegion->pSampleLoops[0].LoopLength : 0;
66            si.LoopPlayCount  = pSample->LoopPlayCount;
67            si.Unpitched      = !pRegion->PitchTrack;
68    
69          // get starting crossfade volume level          return si;
70          switch (pDimRgn->AttenuationController.type) {      }
             case ::gig::attenuation_ctrl_t::type_channelaftertouch:  
                 CrossfadeVolume = 1.0f; //TODO: aftertouch not supported yet  
                 break;  
             case ::gig::attenuation_ctrl_t::type_velocity:  
                 CrossfadeVolume = CrossfadeAttenuation(itNoteOnEvent->Param.Note.Velocity);  
                 break;  
             case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate  
                 CrossfadeVolume = CrossfadeAttenuation(pEngineChannel->ControllerTable[pDimRgn->AttenuationController.controller_number]);  
                 break;  
             case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined  
             default:  
                 CrossfadeVolume = 1.0f;  
         }  
71    
72          PanLeft  = 1.0f - float(RTMath::Max(pDimRgn->Pan, 0)) /  63.0f;      Voice::RegionInfo Voice::GetRegionInfo() {
73          PanRight = 1.0f - float(RTMath::Min(pDimRgn->Pan, 0)) / -64.0f;          RegionInfo ri;
74            ri.UnityNote = pRegion->UnityNote;
75            ri.FineTune  = pRegion->FineTune;
76            ri.Pan       = pRegion->Pan;
77            ri.SampleStartOffset = pRegion->SampleStartOffset;
78    
79          Pos = pDimRgn->SampleStartOffset; // offset where we should start playback of sample (0 - 2000 sample points)          ri.EG2PreAttack        = pRegion->EG2PreAttack;
80            ri.EG2Attack           = pRegion->EG2Attack;
81            ri.EG2Decay1           = pRegion->EG2Decay1;
82            ri.EG2Decay2           = pRegion->EG2Decay2;
83            ri.EG2Sustain          = pRegion->EG2Sustain;
84            ri.EG2InfiniteSustain  = pRegion->EG2InfiniteSustain;
85            ri.EG2Release          = pRegion->EG2Release;
86    
87          // Check if the sample needs disk streaming or is too short for that          ri.EG3Attack     = pRegion->EG3Attack;
88          long cachedsamples = pSample->GetCache().Size / pSample->FrameSize;          ri.EG3Depth      = pRegion->EG3Depth;
89          DiskVoice          = cachedsamples < pSample->SamplesTotal;          ri.VCFEnabled    = pRegion->VCFEnabled;
90            ri.VCFType       = Filter::vcf_type_t(pRegion->VCFType);
91            ri.VCFResonance  = pRegion->VCFResonance;
92    
93          if (DiskVoice) { // voice to be streamed from disk          ri.ReleaseTriggerDecay = 0.01053 * (256 >> pRegion->ReleaseTriggerDecay);
             MaxRAMPos = cachedsamples - (pEngine->MaxSamplesPerCycle << CONFIG_MAX_PITCH) / pSample->Channels; //TODO: this calculation is too pessimistic and may better be moved to Render() method, so it calculates MaxRAMPos dependent to the current demand of sample points to be rendered (e.g. in case of JACK)  
94    
95              // check if there's a loop defined which completely fits into the cached (RAM) part of the sample          return ri;
96              if (pSample->Loops && pSample->LoopEnd <= MaxRAMPos) {      }
                 RAMLoop        = true;  
                 LoopCyclesLeft = pSample->LoopPlayCount;  
             }  
             else RAMLoop = false;  
97    
98              if (pDiskThread->OrderNewStream(&DiskStreamRef, pSample, MaxRAMPos, !RAMLoop) < 0) {      Voice::InstrumentInfo Voice::GetInstrumentInfo() {
99                  dmsg(1,("Disk stream order failed!\n"));          InstrumentInfo ii;
100                  KillImmediately();          ii.FineTune = GetGigEngineChannel()->pInstrument->FineTune;
101                  return -1;          ii.PitchbendRange = GetGigEngineChannel()->pInstrument->PitchbendRange;
             }  
             dmsg(4,("Disk voice launched (cached samples: %d, total Samples: %d, MaxRAMPos: %d, RAMLooping: %s)\n", cachedsamples, pSample->SamplesTotal, MaxRAMPos, (RAMLoop) ? "yes" : "no"));  
         }  
         else { // RAM only voice  
             MaxRAMPos = cachedsamples;  
             if (pSample->Loops) {  
                 RAMLoop        = true;  
                 LoopCyclesLeft = pSample->LoopPlayCount;  
             }  
             else RAMLoop = false;  
             dmsg(4,("RAM only voice launched (Looping: %s)\n", (RAMLoop) ? "yes" : "no"));  
         }  
102    
103            return ii;
104        }
105    
106          // calculate initial pitch value      double Voice::GetSampleAttenuation() {
107          {          return pRegion->SampleAttenuation;
108              double pitchbasecents = pDimRgn->FineTune + (int) pEngine->ScaleTuning[MIDIKey % 12];      }
             if (pDimRgn->PitchTrack) pitchbasecents += (MIDIKey - (int) pDimRgn->UnityNote) * 100;  
             this->PitchBase = RTMath::CentsToFreqRatio(pitchbasecents) * (double(pSample->SamplesPerSecond) / double(pEngine->SampleRate));  
             this->PitchBend = RTMath::CentsToFreqRatio(((double) PitchBend / 8192.0) * 200.0); // pitchbend wheel +-2 semitones = 200 cents  
         }  
   
         // the length of the decay and release curves are dependent on the velocity  
         const double velrelease = 1 / pDimRgn->GetVelocityRelease(itNoteOnEvent->Param.Note.Velocity);  
   
         // setup EG 1 (VCA EG)  
         {  
             // get current value of EG1 controller  
             double eg1controllervalue;  
             switch (pDimRgn->EG1Controller.type) {  
                 case ::gig::eg1_ctrl_t::type_none: // no controller defined  
                     eg1controllervalue = 0;  
                     break;  
                 case ::gig::eg1_ctrl_t::type_channelaftertouch:  
                     eg1controllervalue = 0; // TODO: aftertouch not yet supported  
                     break;  
                 case ::gig::eg1_ctrl_t::type_velocity:  
                     eg1controllervalue = itNoteOnEvent->Param.Note.Velocity;  
                     break;  
                 case ::gig::eg1_ctrl_t::type_controlchange: // MIDI control change controller  
                     eg1controllervalue = pEngineChannel->ControllerTable[pDimRgn->EG1Controller.controller_number];  
                     break;  
             }  
             if (pDimRgn->EG1ControllerInvert) eg1controllervalue = 127 - eg1controllervalue;  
109    
110              // calculate influence of EG1 controller on EG1's parameters      double Voice::GetVelocityAttenuation(uint8_t MIDIKeyVelocity) {
111              // (eg1attack is different from the others)          return pRegion->GetVelocityAttenuation(MIDIKeyVelocity);
112              double eg1attack  = (pDimRgn->EG1ControllerAttackInfluence)  ?      }
                 1 + 0.031 * (double) (pDimRgn->EG1ControllerAttackInfluence == 1 ?  
                                       1 : 1 << pDimRgn->EG1ControllerAttackInfluence) * eg1controllervalue : 1.0;  
             double eg1decay   = (pDimRgn->EG1ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pDimRgn->EG1ControllerDecayInfluence)   * eg1controllervalue : 1.0;  
             double eg1release = (pDimRgn->EG1ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pDimRgn->EG1ControllerReleaseInfluence) * eg1controllervalue : 1.0;  
   
             EG1.trigger(pDimRgn->EG1PreAttack,  
                         pDimRgn->EG1Attack * eg1attack,  
                         pDimRgn->EG1Hold,  
                         pSample->LoopStart,  
                         pDimRgn->EG1Decay1 * eg1decay * velrelease,  
                         pDimRgn->EG1Decay2 * eg1decay * velrelease,  
                         pDimRgn->EG1InfiniteSustain,  
                         pDimRgn->EG1Sustain,  
                         pDimRgn->EG1Release * eg1release * velrelease,  
                         velocityAttenuation,  
                         pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
         }  
113    
114        double Voice::GetVelocityRelease(uint8_t MIDIKeyVelocity) {
115            return pRegion->GetVelocityRelease(MIDIKeyVelocity);
116        }
117    
118          // setup EG 2 (VCF Cutoff EG)      void Voice::ProcessCCEvent(RTList<Event>::Iterator& itEvent) {
119          {          if (itEvent->Type == Event::type_control_change && itEvent->Param.CC.Controller) { // if (valid) MIDI control change event
120              // get current value of EG2 controller              if (pRegion->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&
121              double eg2controllervalue;                  itEvent->Param.CC.Controller == pRegion->AttenuationController.controller_number) {
122              switch (pDimRgn->EG2Controller.type) {                  CrossfadeSmoother.update(AbstractEngine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.CC.Value)]);
                 case ::gig::eg2_ctrl_t::type_none: // no controller defined  
                     eg2controllervalue = 0;  
                     break;  
                 case ::gig::eg2_ctrl_t::type_channelaftertouch:  
                     eg2controllervalue = 0; // TODO: aftertouch not yet supported  
                     break;  
                 case ::gig::eg2_ctrl_t::type_velocity:  
                     eg2controllervalue = itNoteOnEvent->Param.Note.Velocity;  
                     break;  
                 case ::gig::eg2_ctrl_t::type_controlchange: // MIDI control change controller  
                     eg2controllervalue = pEngineChannel->ControllerTable[pDimRgn->EG2Controller.controller_number];  
                     break;  
123              }              }
             if (pDimRgn->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue;  
   
             // calculate influence of EG2 controller on EG2's parameters  
             double eg2attack  = (pDimRgn->EG2ControllerAttackInfluence)  ? 1 + 0.00775 * (double) (1 << pDimRgn->EG2ControllerAttackInfluence)  * eg2controllervalue : 1.0;  
             double eg2decay   = (pDimRgn->EG2ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pDimRgn->EG2ControllerDecayInfluence)   * eg2controllervalue : 1.0;  
             double eg2release = (pDimRgn->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pDimRgn->EG2ControllerReleaseInfluence) * eg2controllervalue : 1.0;  
   
             EG2.trigger(pDimRgn->EG2PreAttack,  
                         pDimRgn->EG2Attack * eg2attack,  
                         false,  
                         pSample->LoopStart,  
                         pDimRgn->EG2Decay1 * eg2decay * velrelease,  
                         pDimRgn->EG2Decay2 * eg2decay * velrelease,  
                         pDimRgn->EG2InfiniteSustain,  
                         pDimRgn->EG2Sustain,  
                         pDimRgn->EG2Release * eg2release * velrelease,  
                         velocityAttenuation,  
                         pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
124          }          }
125        }
126    
127        void Voice::ProcessCutoffEvent(RTList<Event>::Iterator& itEvent) {
128            int ccvalue = itEvent->Param.CC.Value;
129            if (VCFCutoffCtrl.value == ccvalue) return;
130            VCFCutoffCtrl.value = ccvalue;
131            if (pRegion->VCFCutoffControllerInvert)  ccvalue = 127 - ccvalue;
132            if (ccvalue < pRegion->VCFVelocityScale) ccvalue = pRegion->VCFVelocityScale;
133            float cutoff = CutoffBase * float(ccvalue);
134            if (cutoff > 127.0f) cutoff = 127.0f;
135    
136          // setup EG 3 (VCO EG)          VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of fFinalCutoff next time
137          {          fFinalCutoff = cutoff;
138            double eg3depth = RTMath::CentsToFreqRatio(pDimRgn->EG3Depth);      }
139            EG3.trigger(eg3depth, pDimRgn->EG3Attack, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
140        double Voice::CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity) {
141            float crossfadeVolume;
142            switch (pRegion->AttenuationController.type) {
143                case ::gig::attenuation_ctrl_t::type_channelaftertouch:
144                    crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[128])];
145                    break;
146                case ::gig::attenuation_ctrl_t::type_velocity:
147                    crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(MIDIKeyVelocity)];
148                    break;
149                case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate
150                    crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[pRegion->AttenuationController.controller_number])];
151                    break;
152                case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined
153                default:
154                    crossfadeVolume = 1.0f;
155          }          }
156    
157            return crossfadeVolume;
158        }
159    
160          // setup LFO 1 (VCA LFO)      double Voice::GetEG1ControllerValue(uint8_t MIDIKeyVelocity) {
161          {          double eg1controllervalue = 0;
162              uint16_t lfo1_internal_depth;          switch (pRegion->EG1Controller.type) {
163              switch (pDimRgn->LFO1Controller) {              case ::gig::eg1_ctrl_t::type_none: // no controller defined
164                  case ::gig::lfo1_ctrl_internal:                  eg1controllervalue = 0;
165                      lfo1_internal_depth  = pDimRgn->LFO1InternalDepth;                  break;
166                      pLFO1->ExtController = 0; // no external controller              case ::gig::eg1_ctrl_t::type_channelaftertouch:
167                      bLFO1Enabled         = (lfo1_internal_depth > 0);                  eg1controllervalue = GetGigEngineChannel()->ControllerTable[128];
168                      break;                  break;
169                  case ::gig::lfo1_ctrl_modwheel:              case ::gig::eg1_ctrl_t::type_velocity:
170                      lfo1_internal_depth  = 0;                  eg1controllervalue = MIDIKeyVelocity;
171                      pLFO1->ExtController = 1; // MIDI controller 1                  break;
172                      bLFO1Enabled         = (pDimRgn->LFO1ControlDepth > 0);              case ::gig::eg1_ctrl_t::type_controlchange: // MIDI control change controller
173                      break;                  eg1controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG1Controller.controller_number];
174                  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);  
175          }          }
176            if (pRegion->EG1ControllerInvert) eg1controllervalue = 127 - eg1controllervalue;
177    
178            return eg1controllervalue;
179        }
180    
181          // setup LFO 2 (VCF Cutoff LFO)      Voice::EGInfo Voice::CalculateEG1ControllerInfluence(double eg1ControllerValue) {
182          {          EGInfo eg;
183              uint16_t lfo2_internal_depth;          // (eg1attack is different from the others)
184              switch (pDimRgn->LFO2Controller) {          eg.Attack  = (pRegion->EG1ControllerAttackInfluence)  ?
185                  case ::gig::lfo2_ctrl_internal:              1 + 0.031 * (double) (pRegion->EG1ControllerAttackInfluence == 1 ?
186                      lfo2_internal_depth  = pDimRgn->LFO2InternalDepth;                                    1 : 1 << pRegion->EG1ControllerAttackInfluence) * eg1ControllerValue : 1.0;
187                      pLFO2->ExtController = 0; // no external controller          eg.Decay   = (pRegion->EG1ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerDecayInfluence)   * eg1ControllerValue : 1.0;
188                      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);  
         }  
189    
190            return eg;
191        }
192    
193          // setup LFO 3 (VCO LFO)      double Voice::GetEG2ControllerValue(uint8_t MIDIKeyVelocity) {
194          {          double eg2controllervalue = 0;
195              uint16_t lfo3_internal_depth;          switch (pRegion->EG2Controller.type) {
196              switch (pDimRgn->LFO3Controller) {              case ::gig::eg2_ctrl_t::type_none: // no controller defined
197                  case ::gig::lfo3_ctrl_internal:                  eg2controllervalue = 0;
198                      lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;                  break;
199                      pLFO3->ExtController = 0; // no external controller              case ::gig::eg2_ctrl_t::type_channelaftertouch:
200                      bLFO3Enabled         = (lfo3_internal_depth > 0);                  eg2controllervalue = GetGigEngineChannel()->ControllerTable[128];
201                      break;                  break;
202                  case ::gig::lfo3_ctrl_modwheel:              case ::gig::eg2_ctrl_t::type_velocity:
203                      lfo3_internal_depth  = 0;                  eg2controllervalue = MIDIKeyVelocity;
204                      pLFO3->ExtController = 1; // MIDI controller 1                  break;
205                      bLFO3Enabled         = (pDimRgn->LFO3ControlDepth > 0);              case ::gig::eg2_ctrl_t::type_controlchange: // MIDI control change controller
206                      break;                  eg2controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG2Controller.controller_number];
207                  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);  
208          }          }
209            if (pRegion->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue;
210    
211            return eg2controllervalue;
212        }
213    
214          #if CONFIG_FORCE_FILTER      Voice::EGInfo Voice::CalculateEG2ControllerInfluence(double eg2ControllerValue) {
215          const bool bUseFilter = true;          EGInfo eg;
216          #else // use filter only if instrument file told so          eg.Attack  = (pRegion->EG2ControllerAttackInfluence)  ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerAttackInfluence)  * eg2ControllerValue : 1.0;
217          const bool bUseFilter = pDimRgn->VCFEnabled;          eg.Decay   = (pRegion->EG2ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerDecayInfluence)   * eg2ControllerValue : 1.0;
218          #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  
219    
220              #ifdef CONFIG_OVERRIDE_RESONANCE_CTRL          return eg;
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      void Voice::InitLFO1() {
224              FilterLeft.SetType(pDimRgn->VCFType);          uint16_t lfo1_internal_depth;
225              FilterRight.SetType(pDimRgn->VCFType);          switch (pRegion->LFO1Controller) {
226              #else // override filter type              case ::gig::lfo1_ctrl_internal:
227              FilterLeft.SetType(CONFIG_OVERRIDE_FILTER_TYPE);                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
228              FilterRight.SetType(CONFIG_OVERRIDE_FILTER_TYPE);                  pLFO1->ExtController = 0; // no external controller
229              #endif // CONFIG_OVERRIDE_FILTER_TYPE                  bLFO1Enabled         = (lfo1_internal_depth > 0);
230                    break;
231              VCFCutoffCtrl.value    = pEngineChannel->ControllerTable[VCFCutoffCtrl.controller];              case ::gig::lfo1_ctrl_modwheel:
232              VCFResonanceCtrl.value = pEngineChannel->ControllerTable[VCFResonanceCtrl.controller];                  lfo1_internal_depth  = 0;
233                    pLFO1->ExtController = 1; // MIDI controller 1
234              // calculate cutoff frequency                  bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
235              float cutoff = pDimRgn->GetVelocityCutoff(itNoteOnEvent->Param.Note.Velocity);                  break;
236              if (pDimRgn->VCFKeyboardTracking) {              case ::gig::lfo1_ctrl_breath:
237                  cutoff *= exp((itNoteOnEvent->Param.Note.Key - pDimRgn->VCFKeyboardTrackingBreakpoint) * 0.057762265f); // (ln(2) / 12)                  lfo1_internal_depth  = 0;
238              }                  pLFO1->ExtController = 2; // MIDI controller 2
239              CutoffBase = cutoff;                  bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
240                    break;
241                case ::gig::lfo1_ctrl_internal_modwheel:
242                    lfo1_internal_depth  = pRegion->LFO1InternalDepth;
243                    pLFO1->ExtController = 1; // MIDI controller 1
244                    bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
245                    break;
246                case ::gig::lfo1_ctrl_internal_breath:
247                    lfo1_internal_depth  = pRegion->LFO1InternalDepth;
248                    pLFO1->ExtController = 2; // MIDI controller 2
249                    bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
250                    break;
251                default:
252                    lfo1_internal_depth  = 0;
253                    pLFO1->ExtController = 0; // no external controller
254                    bLFO1Enabled         = false;
255            }
256            if (bLFO1Enabled) {
257                pLFO1->trigger(pRegion->LFO1Frequency,
258                               start_level_min,
259                               lfo1_internal_depth,
260                               pRegion->LFO1ControlDepth,
261                               pRegion->LFO1FlipPhase,
262                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
263                pLFO1->update(pLFO1->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO1->ExtController] : 0);
264            }
265        }
266    
267              int cvalue;      void Voice::InitLFO2() {
268              if (VCFCutoffCtrl.controller) {          uint16_t lfo2_internal_depth;
269                  cvalue = pEngineChannel->ControllerTable[VCFCutoffCtrl.controller];          switch (pRegion->LFO2Controller) {
270                  if (pDimRgn->VCFCutoffControllerInvert) cvalue = 127 - cvalue;              case ::gig::lfo2_ctrl_internal:
271                  if (cvalue < pDimRgn->VCFVelocityScale) cvalue = pDimRgn->VCFVelocityScale;                  lfo2_internal_depth  = pRegion->LFO2InternalDepth;
272              }                  pLFO2->ExtController = 0; // no external controller
273              else {                  bLFO2Enabled         = (lfo2_internal_depth > 0);
274                  cvalue = pDimRgn->VCFCutoff;                  break;
275              }              case ::gig::lfo2_ctrl_modwheel:
276              cutoff *= float(cvalue) * 0.00787402f; // (1 / 127)                  lfo2_internal_depth  = 0;
277              if (cutoff > 1.0) cutoff = 1.0;                  pLFO2->ExtController = 1; // MIDI controller 1
278              cutoff = exp(cutoff * FILTER_CUTOFF_COEFF) * CONFIG_FILTER_CUTOFF_MIN;                  bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
279                    break;
280              // calculate resonance              case ::gig::lfo2_ctrl_foot:
281              float resonance = (float) VCFResonanceCtrl.value * 0.00787f;   // 0.0..1.0                  lfo2_internal_depth  = 0;
282              if (pDimRgn->VCFKeyboardTracking) {                  pLFO2->ExtController = 4; // MIDI controller 4
283                  resonance += (float) (itNoteOnEvent->Param.Note.Key - pDimRgn->VCFKeyboardTrackingBreakpoint) * 0.00787f;                  bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
284              }                  break;
285              Constrain(resonance, 0.0, 1.0); // correct resonance if outside allowed value range (0.0..1.0)              case ::gig::lfo2_ctrl_internal_modwheel:
286                    lfo2_internal_depth  = pRegion->LFO2InternalDepth;
287                    pLFO2->ExtController = 1; // MIDI controller 1
288                    bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
289                    break;
290                case ::gig::lfo2_ctrl_internal_foot:
291                    lfo2_internal_depth  = pRegion->LFO2InternalDepth;
292                    pLFO2->ExtController = 4; // MIDI controller 4
293                    bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
294                    break;
295                default:
296                    lfo2_internal_depth  = 0;
297                    pLFO2->ExtController = 0; // no external controller
298                    bLFO2Enabled         = false;
299            }
300            if (bLFO2Enabled) {
301                pLFO2->trigger(pRegion->LFO2Frequency,
302                               start_level_max,
303                               lfo2_internal_depth,
304                               pRegion->LFO2ControlDepth,
305                               pRegion->LFO2FlipPhase,
306                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
307                pLFO2->update(pLFO2->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO2->ExtController] : 0);
308            }
309        }
310    
311        void Voice::InitLFO3() {
312            uint16_t lfo3_internal_depth;
313            switch (pRegion->LFO3Controller) {
314                case ::gig::lfo3_ctrl_internal:
315                    lfo3_internal_depth  = pRegion->LFO3InternalDepth;
316                    pLFO3->ExtController = 0; // no external controller
317                    bLFO3Enabled         = (lfo3_internal_depth > 0);
318                    break;
319                case ::gig::lfo3_ctrl_modwheel:
320                    lfo3_internal_depth  = 0;
321                    pLFO3->ExtController = 1; // MIDI controller 1
322                    bLFO3Enabled         = (pRegion->LFO3ControlDepth > 0);
323                    break;
324                case ::gig::lfo3_ctrl_aftertouch:
325                    lfo3_internal_depth  = 0;
326                    pLFO3->ExtController = 128;
327                    bLFO3Enabled         = true;
328                    break;
329                case ::gig::lfo3_ctrl_internal_modwheel:
330                    lfo3_internal_depth  = pRegion->LFO3InternalDepth;
331                    pLFO3->ExtController = 1; // MIDI controller 1
332                    bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
333                    break;
334                case ::gig::lfo3_ctrl_internal_aftertouch:
335                    lfo3_internal_depth  = pRegion->LFO3InternalDepth;
336                    pLFO3->ExtController = 128;
337                    bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
338                    break;
339                default:
340                    lfo3_internal_depth  = 0;
341                    pLFO3->ExtController = 0; // no external controller
342                    bLFO3Enabled         = false;
343            }
344            if (bLFO3Enabled) {
345                pLFO3->trigger(pRegion->LFO3Frequency,
346                               start_level_mid,
347                               lfo3_internal_depth,
348                               pRegion->LFO3ControlDepth,
349                               false,
350                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
351                pLFO3->update(pLFO3->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO3->ExtController] : 0);
352            }
353        }
354    
355              VCFCutoffCtrl.fvalue    = cutoff - CONFIG_FILTER_CUTOFF_MIN;      float Voice::CalculateCutoffBase(uint8_t MIDIKeyVelocity) {
356              VCFResonanceCtrl.fvalue = resonance;          float cutoff = pRegion->GetVelocityCutoff(MIDIKeyVelocity);
357            if (pRegion->VCFKeyboardTracking) {
358                cutoff *= RTMath::CentsToFreqRatioUnlimited((MIDIKey - pRegion->VCFKeyboardTrackingBreakpoint) * 100);
359            }
360            return cutoff;
361        }
362    
363        float Voice::CalculateFinalCutoff(float cutoffBase) {
364            int cvalue;
365            if (VCFCutoffCtrl.controller) {
366                cvalue = GetGigEngineChannel()->ControllerTable[VCFCutoffCtrl.controller];
367                if (pRegion->VCFCutoffControllerInvert) cvalue = 127 - cvalue;
368                // VCFVelocityScale in this case means Minimum cutoff
369                if (cvalue < pRegion->VCFVelocityScale) cvalue = pRegion->VCFVelocityScale;
370          }          }
371          else {          else {
372              VCFCutoffCtrl.controller    = 0;              cvalue = pRegion->VCFCutoff;
             VCFResonanceCtrl.controller = 0;  
373          }          }
374            float fco = cutoffBase * float(cvalue);
375            if (fco > 127.0f) fco = 127.0f;
376    
377          return 0; // success          return fco;
378      }      }
379    
380      /**      uint8_t Voice::GetVCFCutoffCtrl() {
381       *  Renders the audio data for this voice for the current audio fragment.          uint8_t ctrl;
382       *  The sample input data can either come from RAM (cached sample or sample          switch (pRegion->VCFCutoffController) {
383       *  part) or directly from disk. The output signal will be rendered by              case ::gig::vcf_cutoff_ctrl_modwheel:
384       *  resampling / interpolation. If this voice is a disk streaming voice and                  ctrl = 1;
385       *  the voice completely played back the cached RAM part of the sample, it                  break;
386       *  will automatically switch to disk playback for the next RenderAudio()              case ::gig::vcf_cutoff_ctrl_effect1:
387       *  call.                  ctrl = 12;
388       *                  break;
389       *  @param Samples - number of samples to be rendered in this audio fragment cycle              case ::gig::vcf_cutoff_ctrl_effect2:
390       */                  ctrl = 13;
391      void Voice::Render(uint Samples) {                  break;
392                case ::gig::vcf_cutoff_ctrl_breath:
393          // select default values for synthesis mode bits                  ctrl = 2;
394          SYNTHESIS_MODE_SET_LOOP(SynthesisMode, false);                  break;
395                case ::gig::vcf_cutoff_ctrl_foot:
396          switch (this->PlaybackState) {                  ctrl = 4;
397                    break;
398              case playback_state_init:              case ::gig::vcf_cutoff_ctrl_sustainpedal:
399                  this->PlaybackState = playback_state_ram; // we always start playback from RAM cache and switch then to disk if needed                  ctrl = 64;
400                  // no break - continue with playback_state_ram                  break;
401                case ::gig::vcf_cutoff_ctrl_softpedal:
402              case playback_state_ram: {                  ctrl = 67;
403                      if (RAMLoop) SYNTHESIS_MODE_SET_LOOP(SynthesisMode, true); // enable looping                  break;
404                case ::gig::vcf_cutoff_ctrl_genpurpose7:
405                      // render current fragment                  ctrl = 82;
406                      Synthesize(Samples, (sample_t*) pSample->GetCache().pStart, Delay);                  break;
407                case ::gig::vcf_cutoff_ctrl_genpurpose8:
408                      if (DiskVoice) {                  ctrl = 83;
409                          // check if we reached the allowed limit of the sample RAM cache                  break;
410                          if (Pos > MaxRAMPos) {              case ::gig::vcf_cutoff_ctrl_aftertouch:
411                              dmsg(5,("Voice: switching to disk playback (Pos=%f)\n", Pos));                  ctrl = 128;
412                              this->PlaybackState = playback_state_disk;                  break;
413                          }              case ::gig::vcf_cutoff_ctrl_none:
414                      }              default:
415                      else if (Pos >= pSample->GetCache().Size / pSample->FrameSize) {                  ctrl = 0;
416                          this->PlaybackState = playback_state_end;                  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(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);  
             }  
417          }          }
418    
419            return ctrl;
420      }      }
421    
422      /**      uint8_t Voice::GetVCFResonanceCtrl() {
423       * Process given list of MIDI control change and pitch bend events for          uint8_t ctrl;
424       * the given time.          switch (pRegion->VCFResonanceController) {
425       *              case ::gig::vcf_res_ctrl_genpurpose3:
426       * @param itEvent - iterator pointing to the next event to be processed                  ctrl = 18;
427       * @param End     - youngest time stamp where processing should be stopped                  break;
428       */              case ::gig::vcf_res_ctrl_genpurpose4:
429      void Voice::processCCEvents(RTList<Event>::Iterator& itEvent, uint End) {                  ctrl = 19;
430          for (; itEvent && itEvent->FragmentPos() <= End; ++itEvent) {                  break;
431              if (itEvent->Type == Event::type_control_change &&              case ::gig::vcf_res_ctrl_genpurpose5:
432                  itEvent->Param.CC.Controller) { // if (valid) MIDI control change event                  ctrl = 80;
433                  if (itEvent->Param.CC.Controller == VCFCutoffCtrl.controller) {                  break;
434                      processCutoffEvent(itEvent);              case ::gig::vcf_res_ctrl_genpurpose6:
435                  }                  ctrl = 81;
436                  if (itEvent->Param.CC.Controller == VCFResonanceCtrl.controller) {                  break;
437                      processResonanceEvent(itEvent);              case ::gig::vcf_res_ctrl_none:
438                  }              default:
439                  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);  
             }  
440          }          }
     }  
441    
442      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  
         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;  
443      }      }
444    
445      void Voice::processCutoffEvent(RTList<Event>::Iterator& itEvent) {      void Voice::TriggerEG1(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
446          int ccvalue = itEvent->Param.CC.Value;          EG1.trigger(pRegion->EG1PreAttack,
447          if (VCFCutoffCtrl.value == ccvalue) return;                      pRegion->EG1Attack * egInfo.Attack,
448          VCFCutoffCtrl.value == ccvalue;                      pRegion->EG1Hold,
449          if (pDimRgn->VCFCutoffControllerInvert)  ccvalue = 127 - ccvalue;                      pRegion->EG1Decay1 * egInfo.Decay * velrelease,
450          if (ccvalue < pDimRgn->VCFVelocityScale) ccvalue = pDimRgn->VCFVelocityScale;                      pRegion->EG1Decay2 * egInfo.Decay * velrelease,
451          float cutoff = CutoffBase * float(ccvalue) * 0.00787402f; // (1 / 127)                      pRegion->EG1InfiniteSustain,
452          if (cutoff > 1.0) cutoff = 1.0;                      pRegion->EG1Sustain,
453          cutoff = exp(cutoff * FILTER_CUTOFF_COEFF) * CONFIG_FILTER_CUTOFF_MIN - CONFIG_FILTER_CUTOFF_MIN;                      pRegion->EG1Release * egInfo.Release * velrelease,
454          VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of fFinalCutoff next time                      velocityAttenuation,
455          fFinalCutoff = cutoff;                      sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
456      }      }
457    
458      void Voice::processResonanceEvent(RTList<Event>::Iterator& itEvent) {      void Voice::TriggerEG2(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
459          // convert absolute controller value to differential          EG2.trigger(uint(RgnInfo.EG2PreAttack),
460          const int ctrldelta = itEvent->Param.CC.Value - VCFResonanceCtrl.value;                      RgnInfo.EG2Attack * egInfo.Attack,
461          VCFResonanceCtrl.value = itEvent->Param.CC.Value;                      false,
462          const float resonancedelta = (float) ctrldelta * 0.00787f; // 0.0..1.0                      RgnInfo.EG2Decay1 * egInfo.Decay * velrelease,
463          fFinalResonance += resonancedelta;                      RgnInfo.EG2Decay2 * egInfo.Decay * velrelease,
464          // needed for initialization of parameter                      RgnInfo.EG2InfiniteSustain,
465          VCFResonanceCtrl.fvalue = itEvent->Param.CC.Value * 0.00787f;                      uint(RgnInfo.EG2Sustain),
466      }                      RgnInfo.EG2Release * egInfo.Release * velrelease,
467                        velocityAttenuation,
468      /**                      sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
469       *  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) {  
         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  
             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  
             }  
             fFinalPitch *= RTMath::CentsToFreqRatio(EG3.render());  
   
             // process low frequency oscillators  
             if (bLFO1Enabled) fFinalVolume *= pLFO1->render();  
             if (bLFO2Enabled) fFinalCutoff *= pLFO2->render();  
             if (bLFO3Enabled) fFinalPitch  *= RTMath::CentsToFreqRatio(pLFO3->render());  
   
             // if filter enabled then update filter coefficients  
             if (SYNTHESIS_MODE_GET_FILTER(SynthesisMode)) {  
                 FilterLeft.SetParameters(fFinalCutoff, fFinalResonance, pEngine->SampleRate);  
                 FilterRight.SetParameters(fFinalCutoff, fFinalResonance, pEngine->SampleRate);  
             }  
   
             // how many steps do we calculate for this next subfragment  
             const int steps = iSubFragmentEnd - i;  
   
             // select the appropriate synthesis mode  
             SYNTHESIS_MODE_SET_INTERPOLATE(SynthesisMode, fFinalPitch != 1.0f);  
470    
471              // render audio for one subfragment      void Voice::ProcessGroupEvent(RTList<Event>::Iterator& itEvent) {
472              RunSynthesisFunction(SynthesisMode, *this, iSubFragmentEnd, pSrc, i);          dmsg(4,("Voice %x processGroupEvents event type=%d", this, itEvent->Type));
473    
474              // increment envelopes' positions          // TODO: The SustainPedal condition could be wrong, maybe the
475              if (EG1.active()) {          // check should be if this Voice is in release stage or is a
476                  EG1.increment(1);          // release sample instead. Need to test this in GSt.
477                  if (!EG1.toStageEndLeft()) EG1.update(EGADSR::event_stage_end, this->Pos, fFinalPitch, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);          if (itEvent->Param.Note.Key != MIDIKey ||
478              }              !GetGigEngineChannel()->SustainPedal) {
479              if (EG2.active()) {              dmsg(4,("Voice %x - kill", this));
                 EG2.increment(1);  
                 if (!EG2.toStageEndLeft()) EG2.update(EGADSR::event_stage_end, this->Pos, fFinalPitch, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
             }  
             EG3.increment(1);  
             if (!EG3.toEndLeft()) EG3.update(); // neutralize envelope coefficient if end reached  
480    
481              i = iSubFragmentEnd;              // kill the voice fast
482                pEG1->enterFadeOutStage();
483          }          }
484      }      }
485    
486      /**      void Voice::CalculateFadeOutCoeff(float FadeOutTime, float SampleRate) {
487       *  Immediately kill the voice. This method should not be used to kill          EG1.CalculateFadeOutCoeff(FadeOutTime, SampleRate);
488       *  a normal, active voice, because it doesn't take care of things like      }
489       *  fading down the volume level to avoid clicks and regular processing  
490       *  until the kill event actually occured!      int Voice::CalculatePan(uint8_t pan) {
491       *          int p;
492       *  @see Kill()          // Gst behaviour: -64 and 63 are special cases
493       */          if (RgnInfo.Pan == -64)     p = pan * 2 - 127;
494      void Voice::KillImmediately() {          else if (RgnInfo.Pan == 63) p = pan * 2;
495          if (DiskVoice && DiskStreamRef.State != Stream::state_unused) {          else                        p = pan + RgnInfo.Pan;
             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  
496    
497          if (itTriggerEvent && itKillEvent->FragmentPos() <= itTriggerEvent->FragmentPos()) return;          if (p < 0) return 0;
498          this->itKillEvent = itKillEvent;          if (p > 127) return 127;
499            return p;
500      }      }
501    
502  }} // namespace LinuxSampler::gig  }} // namespace LinuxSampler::gig
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