/[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 3054 by schoenebeck, Thu Dec 15 12:47:45 2016 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 Christian Schoenebeck and Grigor Iliev             *
8     *   Copyright (C) 2010 - 2016 Christian Schoenebeck and Andreas Persson   *
9   *                                                                         *   *                                                                         *
10   *   This program is free software; you can redistribute it and/or modify  *   *   This program is free software; you can redistribute it and/or modify  *
11   *   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 26 
26  #include "../../common/Features.h"  #include "../../common/Features.h"
27  #include "Synthesizer.h"  #include "Synthesizer.h"
28  #include "Profiler.h"  #include "Profiler.h"
29    #include "Engine.h"
30    #include "EngineChannel.h"
31    
32  #include "Voice.h"  #include "Voice.h"
33    
34  namespace LinuxSampler { namespace gig {  namespace LinuxSampler { namespace gig {
35    
     const float Voice::FILTER_CUTOFF_COEFF(CalculateFilterCutoffCoeff());  
   
     float Voice::CalculateFilterCutoffCoeff() {  
         return log(CONFIG_FILTER_CUTOFF_MAX / CONFIG_FILTER_CUTOFF_MIN);  
     }  
   
36      Voice::Voice() {      Voice::Voice() {
37          pEngine     = NULL;          pEngine = NULL;
38          pDiskThread = NULL;          pEG1 = &EG1;
39          PlaybackState = playback_state_end;          pEG2 = &EG2;
         pLFO1 = new LFOUnsigned(1.0f);  // amplitude EG (0..1 range)  
         pLFO2 = new LFOUnsigned(1.0f);  // filter EG (0..1 range)  
         pLFO3 = new LFOSigned(1200.0f); // pitch EG (-1200..+1200 range)  
         KeyGroup = 0;  
         SynthesisMode = 0; // set all mode bits to 0 first  
         // select synthesis implementation (currently either pure C++ or MMX+SSE(1))  
         #if CONFIG_ASM && ARCH_X86  
         SYNTHESIS_MODE_SET_IMPLEMENTATION(SynthesisMode, Features::supportsMMX() && Features::supportsSSE());  
         #else  
         SYNTHESIS_MODE_SET_IMPLEMENTATION(SynthesisMode, false);  
         #endif  
         SYNTHESIS_MODE_SET_PROFILING(SynthesisMode, Profiler::isEnabled());  
   
         finalSynthesisParameters.filterLeft.Reset();  
         finalSynthesisParameters.filterRight.Reset();  
40      }      }
41    
42      Voice::~Voice() {      Voice::~Voice() {
         if (pLFO1) delete pLFO1;  
         if (pLFO2) delete pLFO2;  
         if (pLFO3) delete pLFO3;  
43      }      }
44    
45      void Voice::SetEngine(Engine* pEngine) {      EngineChannel* Voice::GetGigEngineChannel() {
46          this->pEngine     = pEngine;          return static_cast<EngineChannel*>(pEngineChannel);
47          this->pDiskThread = pEngine->pDiskThread;      }
48    
49        void Voice::SetEngine(LinuxSampler::Engine* pEngine) {
50            Engine* engine = static_cast<Engine*>(pEngine);
51            this->pEngine     = engine;
52            this->pDiskThread = engine->pDiskThread;
53          dmsg(6,("Voice::SetEngine()\n"));          dmsg(6,("Voice::SetEngine()\n"));
54      }      }
55    
56      /**      Voice::SampleInfo Voice::GetSampleInfo() {
57       *  Initializes and triggers the voice, a disk stream will be launched if          SampleInfo si;
58       *  needed.          si.SampleRate       = pSample->SamplesPerSecond;
59       *          si.ChannelCount     = pSample->Channels;
60       *  @param pEngineChannel - engine channel on which this voice was ordered          si.FrameSize        = pSample->FrameSize;
61       *  @param itNoteOnEvent  - event that caused triggering of this voice          si.BitDepth         = pSample->BitDepth;
62       *  @param PitchBend      - MIDI detune factor (-8192 ... +8191)          si.TotalFrameCount  = (uint)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;  
         }  
63    
64          // select channel mode (mono or stereo)          si.HasLoops       = pRegion->SampleLoops;
65          SYNTHESIS_MODE_SET_CHANNELS(SynthesisMode, pSample->Channels == 2);          si.LoopStart      = (si.HasLoops) ? pRegion->pSampleLoops[0].LoopStart  : 0;
66            si.LoopLength     = (si.HasLoops) ? pRegion->pSampleLoops[0].LoopLength : 0;
67            si.LoopPlayCount  = pSample->LoopPlayCount;
68            si.Unpitched      = !pRegion->PitchTrack;
69    
70          // get starting crossfade volume level          return si;
71          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;  
         }  
72    
73          PanLeft  = 1.0f - float(RTMath::Max(pDimRgn->Pan, 0)) /  63.0f;      Voice::RegionInfo Voice::GetRegionInfo() {
74          PanRight = 1.0f - float(RTMath::Min(pDimRgn->Pan, 0)) / -64.0f;          RegionInfo ri;
75            ri.UnityNote = pRegion->UnityNote;
76            ri.FineTune  = pRegion->FineTune;
77            ri.Pan       = pRegion->Pan;
78            ri.SampleStartOffset = pRegion->SampleStartOffset;
79    
80          finalSynthesisParameters.dPos = pDimRgn->SampleStartOffset; // offset where we should start playback of sample (0 - 2000 sample points)          ri.EG2PreAttack        = pRegion->EG2PreAttack;
81            ri.EG2Attack           = pRegion->EG2Attack;
82            ri.EG2Decay1           = pRegion->EG2Decay1;
83            ri.EG2Decay2           = pRegion->EG2Decay2;
84            ri.EG2Sustain          = pRegion->EG2Sustain;
85            ri.EG2InfiniteSustain  = pRegion->EG2InfiniteSustain;
86            ri.EG2Release          = pRegion->EG2Release;
87    
88          // Check if the sample needs disk streaming or is too short for that          ri.EG3Attack     = pRegion->EG3Attack;
89          long cachedsamples = pSample->GetCache().Size / pSample->FrameSize;          ri.EG3Depth      = pRegion->EG3Depth;
90          DiskVoice          = cachedsamples < pSample->SamplesTotal;          ri.VCFEnabled    = pRegion->VCFEnabled;
91            ri.VCFType       = Filter::vcf_type_t(pRegion->VCFType);
92            ri.VCFResonance  = pRegion->VCFResonance;
93    
94          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)  
95    
96              // check if there's a loop defined which completely fits into the cached (RAM) part of the sample          return ri;
97              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;  
98    
99              if (pDiskThread->OrderNewStream(&DiskStreamRef, pSample, MaxRAMPos, !RAMLoop) < 0) {      Voice::InstrumentInfo Voice::GetInstrumentInfo() {
100                  dmsg(1,("Disk stream order failed!\n"));          InstrumentInfo ii;
101                  KillImmediately();          ii.FineTune = GetGigEngineChannel()->pInstrument->FineTune;
102                  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;  
                 loop.uiCyclesLeft = pSample->LoopPlayCount;  
             }  
             else RAMLoop = false;  
             dmsg(4,("RAM only voice launched (Looping: %s)\n", (RAMLoop) ? "yes" : "no"));  
         }  
103    
104            return ii;
105        }
106    
107          // calculate initial pitch value      double Voice::GetSampleAttenuation() {
108          {          return pRegion->SampleAttenuation;
109              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;  
110    
111              // calculate influence of EG1 controller on EG1's parameters      double Voice::GetVelocityAttenuation(uint8_t MIDIKeyVelocity) {
112              // (eg1attack is different from the others)          return pRegion->GetVelocityAttenuation(MIDIKeyVelocity);
113              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);  
         }  
114    
115        double Voice::GetVelocityRelease(uint8_t MIDIKeyVelocity) {
116            return pRegion->GetVelocityRelease(MIDIKeyVelocity);
117        }
118    
119          // setup EG 2 (VCF Cutoff EG)      void Voice::ProcessCCEvent(RTList<Event>::Iterator& itEvent) {
120          {          if (itEvent->Type == Event::type_control_change && itEvent->Param.CC.Controller) { // if (valid) MIDI control change event
121              // get current value of EG2 controller              if (pRegion->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&
122              double eg2controllervalue;                  itEvent->Param.CC.Controller == pRegion->AttenuationController.controller_number) {
123              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;  
124              }              }
             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);  
125          }          }
126        }
127    
128        void Voice::ProcessChannelPressureEvent(RTList<Event>::Iterator& itEvent) {
129          // setup EG 3 (VCO EG)          if (itEvent->Type == Event::type_channel_pressure) { // if (valid) MIDI channel pressure (aftertouch) event
130          {              if (pRegion->AttenuationController.type == ::gig::attenuation_ctrl_t::type_channelaftertouch) {
131            double eg3depth = RTMath::CentsToFreqRatio(pDimRgn->EG3Depth);                  CrossfadeSmoother.update(AbstractEngine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.ChannelPressure.Value)]);
132            EG3.trigger(eg3depth, pDimRgn->EG3Attack, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);              }
133          }          }
134        }
135    
136        void Voice::ProcessPolyphonicKeyPressureEvent(RTList<Event>::Iterator& itEvent) {
137            // Not used so far
138        }
139    
140          // setup LFO 1 (VCA LFO)      void Voice::ProcessCutoffEvent(RTList<Event>::Iterator& itEvent) {
141          {          int ccvalue = itEvent->Param.CC.Value;
142              uint16_t lfo1_internal_depth;          if (VCFCutoffCtrl.value == ccvalue) return;
143              switch (pDimRgn->LFO1Controller) {          VCFCutoffCtrl.value = ccvalue;
144                  case ::gig::lfo1_ctrl_internal:          if (pRegion->VCFCutoffControllerInvert)  ccvalue = 127 - ccvalue;
145                      lfo1_internal_depth  = pDimRgn->LFO1InternalDepth;          if (ccvalue < pRegion->VCFVelocityScale) ccvalue = pRegion->VCFVelocityScale;
146                      pLFO1->ExtController = 0; // no external controller          float cutoff = CutoffBase * float(ccvalue);
147                      bLFO1Enabled         = (lfo1_internal_depth > 0);          if (cutoff > 127.0f) cutoff = 127.0f;
                     break;  
                 case ::gig::lfo1_ctrl_modwheel:  
                     lfo1_internal_depth  = 0;  
                     pLFO1->ExtController = 1; // MIDI controller 1  
                     bLFO1Enabled         = (pDimRgn->LFO1ControlDepth > 0);  
                     break;  
                 case ::gig::lfo1_ctrl_breath:  
                     lfo1_internal_depth  = 0;  
                     pLFO1->ExtController = 2; // MIDI controller 2  
                     bLFO1Enabled         = (pDimRgn->LFO1ControlDepth > 0);  
                     break;  
                 case ::gig::lfo1_ctrl_internal_modwheel:  
                     lfo1_internal_depth  = pDimRgn->LFO1InternalDepth;  
                     pLFO1->ExtController = 1; // MIDI controller 1  
                     bLFO1Enabled         = (lfo1_internal_depth > 0 || pDimRgn->LFO1ControlDepth > 0);  
                     break;  
                 case ::gig::lfo1_ctrl_internal_breath:  
                     lfo1_internal_depth  = pDimRgn->LFO1InternalDepth;  
                     pLFO1->ExtController = 2; // MIDI controller 2  
                     bLFO1Enabled         = (lfo1_internal_depth > 0 || pDimRgn->LFO1ControlDepth > 0);  
                     break;  
                 default:  
                     lfo1_internal_depth  = 0;  
                     pLFO1->ExtController = 0; // no external controller  
                     bLFO1Enabled         = false;  
             }  
             if (bLFO1Enabled) pLFO1->trigger(pDimRgn->LFO1Frequency,  
                                              start_level_max,  
                                              lfo1_internal_depth,  
                                              pDimRgn->LFO1ControlDepth,  
                                              pDimRgn->LFO1FlipPhase,  
                                              pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
         }  
148    
149            VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of fFinalCutoff next time
150            fFinalCutoff = cutoff;
151        }
152    
153          // setup LFO 2 (VCF Cutoff LFO)      double Voice::CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity) {
154          {          float crossfadeVolume;
155              uint16_t lfo2_internal_depth;          switch (pRegion->AttenuationController.type) {
156              switch (pDimRgn->LFO2Controller) {              case ::gig::attenuation_ctrl_t::type_channelaftertouch:
157                  case ::gig::lfo2_ctrl_internal:                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[128])];
158                      lfo2_internal_depth  = pDimRgn->LFO2InternalDepth;                  break;
159                      pLFO2->ExtController = 0; // no external controller              case ::gig::attenuation_ctrl_t::type_velocity:
160                      bLFO2Enabled         = (lfo2_internal_depth > 0);                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(MIDIKeyVelocity)];
161                      break;                  break;
162                  case ::gig::lfo2_ctrl_modwheel:              case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate
163                      lfo2_internal_depth  = 0;                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[pRegion->AttenuationController.controller_number])];
164                      pLFO2->ExtController = 1; // MIDI controller 1                  break;
165                      bLFO2Enabled         = (pDimRgn->LFO2ControlDepth > 0);              case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined
166                      break;              default:
167                  case ::gig::lfo2_ctrl_foot:                  crossfadeVolume = 1.0f;
                     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);  
168          }          }
169    
170            return crossfadeVolume;
171        }
172    
173          // setup LFO 3 (VCO LFO)      double Voice::GetEG1ControllerValue(uint8_t MIDIKeyVelocity) {
174          {          double eg1controllervalue = 0;
175              uint16_t lfo3_internal_depth;          switch (pRegion->EG1Controller.type) {
176              switch (pDimRgn->LFO3Controller) {              case ::gig::eg1_ctrl_t::type_none: // no controller defined
177                  case ::gig::lfo3_ctrl_internal:                  eg1controllervalue = 0;
178                      lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;                  break;
179                      pLFO3->ExtController = 0; // no external controller              case ::gig::eg1_ctrl_t::type_channelaftertouch:
180                      bLFO3Enabled         = (lfo3_internal_depth > 0);                  eg1controllervalue = GetGigEngineChannel()->ControllerTable[128];
181                      break;                  break;
182                  case ::gig::lfo3_ctrl_modwheel:              case ::gig::eg1_ctrl_t::type_velocity:
183                      lfo3_internal_depth  = 0;                  eg1controllervalue = MIDIKeyVelocity;
184                      pLFO3->ExtController = 1; // MIDI controller 1                  break;
185                      bLFO3Enabled         = (pDimRgn->LFO3ControlDepth > 0);              case ::gig::eg1_ctrl_t::type_controlchange: // MIDI control change controller
186                      break;                  eg1controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG1Controller.controller_number];
187                  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);  
188          }          }
189            if (pRegion->EG1ControllerInvert) eg1controllervalue = 127 - eg1controllervalue;
190    
191            return eg1controllervalue;
192        }
193    
194          #if CONFIG_FORCE_FILTER      Voice::EGInfo Voice::CalculateEG1ControllerInfluence(double eg1ControllerValue) {
195          const bool bUseFilter = true;          EGInfo eg;
196          #else // use filter only if instrument file told so          // (eg1attack is different from the others)
197          const bool bUseFilter = pDimRgn->VCFEnabled;          if (pRegion->EG1Attack < 1e-8 && // attack in gig == 0
198          #endif // CONFIG_FORCE_FILTER              (pRegion->EG1ControllerAttackInfluence == 0 ||
199          SYNTHESIS_MODE_SET_FILTER(SynthesisMode, bUseFilter);               eg1ControllerValue <= 10)) { // strange GSt special case
200          if (bUseFilter) {              eg.Attack = 0; // this will force the attack to be 0 in the call to EG1.trigger
201              #ifdef CONFIG_OVERRIDE_CUTOFF_CTRL          } else {
202              VCFCutoffCtrl.controller = CONFIG_OVERRIDE_CUTOFF_CTRL;              eg.Attack  = (pRegion->EG1ControllerAttackInfluence)  ?
203              #else // use the one defined in the instrument file                  1 + 0.031 * (double) (pRegion->EG1ControllerAttackInfluence == 1 ?
204              switch (pDimRgn->VCFCutoffController) {                                        1 : 1 << pRegion->EG1ControllerAttackInfluence) * eg1ControllerValue : 1.0;
205                  case ::gig::vcf_cutoff_ctrl_modwheel:          }
206                      VCFCutoffCtrl.controller = 1;          eg.Decay   = (pRegion->EG1ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerDecayInfluence)   * eg1ControllerValue : 1.0;
207                      break;          eg.Release = (pRegion->EG1ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerReleaseInfluence) * eg1ControllerValue : 1.0;
208                  case ::gig::vcf_cutoff_ctrl_effect1:  
209                      VCFCutoffCtrl.controller = 12;          return eg;
210                      break;      }
211                  case ::gig::vcf_cutoff_ctrl_effect2:  
212                      VCFCutoffCtrl.controller = 13;      double Voice::GetEG2ControllerValue(uint8_t MIDIKeyVelocity) {
213                      break;          double eg2controllervalue = 0;
214                  case ::gig::vcf_cutoff_ctrl_breath:          switch (pRegion->EG2Controller.type) {
215                      VCFCutoffCtrl.controller = 2;              case ::gig::eg2_ctrl_t::type_none: // no controller defined
216                      break;                  eg2controllervalue = 0;
217                  case ::gig::vcf_cutoff_ctrl_foot:                  break;
218                      VCFCutoffCtrl.controller = 4;              case ::gig::eg2_ctrl_t::type_channelaftertouch:
219                      break;                  eg2controllervalue = GetGigEngineChannel()->ControllerTable[128];
220                  case ::gig::vcf_cutoff_ctrl_sustainpedal:                  break;
221                      VCFCutoffCtrl.controller = 64;              case ::gig::eg2_ctrl_t::type_velocity:
222                      break;                  eg2controllervalue = MIDIKeyVelocity;
223                  case ::gig::vcf_cutoff_ctrl_softpedal:                  break;
224                      VCFCutoffCtrl.controller = 67;              case ::gig::eg2_ctrl_t::type_controlchange: // MIDI control change controller
225                      break;                  eg2controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG2Controller.controller_number];
226                  case ::gig::vcf_cutoff_ctrl_genpurpose7:                  break;
227                      VCFCutoffCtrl.controller = 82;          }
228                      break;          if (pRegion->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue;
                 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  
229    
230              #ifdef CONFIG_OVERRIDE_RESONANCE_CTRL          return eg2controllervalue;
231              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  
232    
233              #ifndef CONFIG_OVERRIDE_FILTER_TYPE      Voice::EGInfo Voice::CalculateEG2ControllerInfluence(double eg2ControllerValue) {
234              finalSynthesisParameters.filterLeft.SetType(pDimRgn->VCFType);          EGInfo eg;
235              finalSynthesisParameters.filterRight.SetType(pDimRgn->VCFType);          eg.Attack  = (pRegion->EG2ControllerAttackInfluence)  ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerAttackInfluence)  * eg2ControllerValue : 1.0;
236              #else // override filter type          eg.Decay   = (pRegion->EG2ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerDecayInfluence)   * eg2ControllerValue : 1.0;
237              FilterLeft.SetType(CONFIG_OVERRIDE_FILTER_TYPE);          eg.Release = (pRegion->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerReleaseInfluence) * eg2ControllerValue : 1.0;
             FilterRight.SetType(CONFIG_OVERRIDE_FILTER_TYPE);  
             #endif // CONFIG_OVERRIDE_FILTER_TYPE  
   
             VCFCutoffCtrl.value    = pEngineChannel->ControllerTable[VCFCutoffCtrl.controller];  
             VCFResonanceCtrl.value = pEngineChannel->ControllerTable[VCFResonanceCtrl.controller];  
   
             // calculate cutoff frequency  
             float cutoff = pDimRgn->GetVelocityCutoff(itNoteOnEvent->Param.Note.Velocity);  
             if (pDimRgn->VCFKeyboardTracking) {  
                 cutoff *= exp((itNoteOnEvent->Param.Note.Key - pDimRgn->VCFKeyboardTrackingBreakpoint) * 0.057762265f); // (ln(2) / 12)  
             }  
             CutoffBase = cutoff;  
238    
239              int cvalue;          return eg;
240              if (VCFCutoffCtrl.controller) {      }
                 cvalue = pEngineChannel->ControllerTable[VCFCutoffCtrl.controller];  
                 if (pDimRgn->VCFCutoffControllerInvert) cvalue = 127 - cvalue;  
                 if (cvalue < pDimRgn->VCFVelocityScale) cvalue = pDimRgn->VCFVelocityScale;  
             }  
             else {  
                 cvalue = pDimRgn->VCFCutoff;  
             }  
             cutoff *= float(cvalue) * 0.00787402f; // (1 / 127)  
             if (cutoff > 1.0) cutoff = 1.0;  
             cutoff = exp(cutoff * FILTER_CUTOFF_COEFF) * CONFIG_FILTER_CUTOFF_MIN;  
   
             // calculate resonance  
             float resonance = (float) VCFResonanceCtrl.value * 0.00787f;   // 0.0..1.0  
             if (pDimRgn->VCFKeyboardTracking) {  
                 resonance += (float) (itNoteOnEvent->Param.Note.Key - pDimRgn->VCFKeyboardTrackingBreakpoint) * 0.00787f;  
             }  
             Constrain(resonance, 0.0, 1.0); // correct resonance if outside allowed value range (0.0..1.0)  
241    
242              VCFCutoffCtrl.fvalue    = cutoff - CONFIG_FILTER_CUTOFF_MIN;      void Voice::InitLFO1() {
243              VCFResonanceCtrl.fvalue = resonance;          uint16_t lfo1_internal_depth;
244          }          switch (pRegion->LFO1Controller) {
245          else {              case ::gig::lfo1_ctrl_internal:
246              VCFCutoffCtrl.controller    = 0;                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
247              VCFResonanceCtrl.controller = 0;                  pLFO1->ExtController = 0; // no external controller
248                    bLFO1Enabled         = (lfo1_internal_depth > 0);
249                    break;
250                case ::gig::lfo1_ctrl_modwheel:
251                    lfo1_internal_depth  = 0;
252                    pLFO1->ExtController = 1; // MIDI controller 1
253                    bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
254                    break;
255                case ::gig::lfo1_ctrl_breath:
256                    lfo1_internal_depth  = 0;
257                    pLFO1->ExtController = 2; // MIDI controller 2
258                    bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
259                    break;
260                case ::gig::lfo1_ctrl_internal_modwheel:
261                    lfo1_internal_depth  = pRegion->LFO1InternalDepth;
262                    pLFO1->ExtController = 1; // MIDI controller 1
263                    bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
264                    break;
265                case ::gig::lfo1_ctrl_internal_breath:
266                    lfo1_internal_depth  = pRegion->LFO1InternalDepth;
267                    pLFO1->ExtController = 2; // MIDI controller 2
268                    bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
269                    break;
270                default:
271                    lfo1_internal_depth  = 0;
272                    pLFO1->ExtController = 0; // no external controller
273                    bLFO1Enabled         = false;
274            }
275            if (bLFO1Enabled) {
276                pLFO1->trigger(pRegion->LFO1Frequency,
277                               start_level_min,
278                               lfo1_internal_depth,
279                               pRegion->LFO1ControlDepth,
280                               pRegion->LFO1FlipPhase,
281                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
282                pLFO1->update(pLFO1->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO1->ExtController] : 0);
283          }          }
   
         return 0; // success  
284      }      }
285    
286      /**      void Voice::InitLFO2() {
287       *  Renders the audio data for this voice for the current audio fragment.          uint16_t lfo2_internal_depth;
288       *  The sample input data can either come from RAM (cached sample or sample          switch (pRegion->LFO2Controller) {
289       *  part) or directly from disk. The output signal will be rendered by              case ::gig::lfo2_ctrl_internal:
290       *  resampling / interpolation. If this voice is a disk streaming voice and                  lfo2_internal_depth  = pRegion->LFO2InternalDepth;
291       *  the voice completely played back the cached RAM part of the sample, it                  pLFO2->ExtController = 0; // no external controller
292       *  will automatically switch to disk playback for the next RenderAudio()                  bLFO2Enabled         = (lfo2_internal_depth > 0);
293       *  call.                  break;
294       *              case ::gig::lfo2_ctrl_modwheel:
295       *  @param Samples - number of samples to be rendered in this audio fragment cycle                  lfo2_internal_depth  = 0;
296       */                  pLFO2->ExtController = 1; // MIDI controller 1
297      void Voice::Render(uint Samples) {                  bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
298                    break;
299          // select default values for synthesis mode bits              case ::gig::lfo2_ctrl_foot:
300          SYNTHESIS_MODE_SET_LOOP(SynthesisMode, false);                  lfo2_internal_depth  = 0;
301                    pLFO2->ExtController = 4; // MIDI controller 4
302          switch (this->PlaybackState) {                  bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
303                    break;
304              case playback_state_init:              case ::gig::lfo2_ctrl_internal_modwheel:
305                  this->PlaybackState = playback_state_ram; // we always start playback from RAM cache and switch then to disk if needed                  lfo2_internal_depth  = pRegion->LFO2InternalDepth;
306                  // no break - continue with playback_state_ram                  pLFO2->ExtController = 1; // MIDI controller 1
307                    bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
308              case playback_state_ram: {                  break;
309                      if (RAMLoop) SYNTHESIS_MODE_SET_LOOP(SynthesisMode, true); // enable looping              case ::gig::lfo2_ctrl_internal_foot:
310                    lfo2_internal_depth  = pRegion->LFO2InternalDepth;
311                      // render current fragment                  pLFO2->ExtController = 4; // MIDI controller 4
312                      Synthesize(Samples, (sample_t*) pSample->GetCache().pStart, Delay);                  bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
313                    break;
314                      if (DiskVoice) {              default:
315                          // check if we reached the allowed limit of the sample RAM cache                  lfo2_internal_depth  = 0;
316                          if (finalSynthesisParameters.dPos > MaxRAMPos) {                  pLFO2->ExtController = 0; // no external controller
317                              dmsg(5,("Voice: switching to disk playback (Pos=%f)\n", finalSynthesisParameters.dPos));                  bLFO2Enabled         = false;
318                              this->PlaybackState = playback_state_disk;          }
319                          }          if (bLFO2Enabled) {
320                      } else if (finalSynthesisParameters.dPos >= pSample->GetCache().Size / pSample->FrameSize) {              pLFO2->trigger(pRegion->LFO2Frequency,
321                          this->PlaybackState = playback_state_end;                             start_level_max,
322                      }                             lfo2_internal_depth,
323                  }                             pRegion->LFO2ControlDepth,
324                  break;                             pRegion->LFO2FlipPhase,
325                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
326              case playback_state_disk: {              pLFO2->update(pLFO2->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO2->ExtController] : 0);
                     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);  
             }  
327          }          }
328      }      }
329    
330      /**      void Voice::InitLFO3() {
331       * Process given list of MIDI control change and pitch bend events for          uint16_t lfo3_internal_depth;
332       * the given time.          switch (pRegion->LFO3Controller) {
333       *              case ::gig::lfo3_ctrl_internal:
334       * @param itEvent - iterator pointing to the next event to be processed                  lfo3_internal_depth  = pRegion->LFO3InternalDepth;
335       * @param End     - youngest time stamp where processing should be stopped                  pLFO3->ExtController = 0; // no external controller
336       */                  bLFO3Enabled         = (lfo3_internal_depth > 0);
337      void Voice::processCCEvents(RTList<Event>::Iterator& itEvent, uint End) {                  break;
338          for (; itEvent && itEvent->FragmentPos() <= End; ++itEvent) {              case ::gig::lfo3_ctrl_modwheel:
339              if (itEvent->Type == Event::type_control_change &&                  lfo3_internal_depth  = 0;
340                  itEvent->Param.CC.Controller) { // if (valid) MIDI control change event                  pLFO3->ExtController = 1; // MIDI controller 1
341                  if (itEvent->Param.CC.Controller == VCFCutoffCtrl.controller) {                  bLFO3Enabled         = (pRegion->LFO3ControlDepth > 0);
342                      processCutoffEvent(itEvent);                  break;
343                  }              case ::gig::lfo3_ctrl_aftertouch:
344                  if (itEvent->Param.CC.Controller == VCFResonanceCtrl.controller) {                  lfo3_internal_depth  = 0;
345                      processResonanceEvent(itEvent);                  pLFO3->ExtController = CTRL_TABLE_IDX_AFTERTOUCH;
346                  }                  bLFO3Enabled         = true;
347                  if (itEvent->Param.CC.Controller == pLFO1->ExtController) {                  break;
348                      pLFO1->update(itEvent->Param.CC.Value);              case ::gig::lfo3_ctrl_internal_modwheel:
349                  }                  lfo3_internal_depth  = pRegion->LFO3InternalDepth;
350                  if (itEvent->Param.CC.Controller == pLFO2->ExtController) {                  pLFO3->ExtController = 1; // MIDI controller 1
351                      pLFO2->update(itEvent->Param.CC.Value);                  bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
352                  }                  break;
353                  if (itEvent->Param.CC.Controller == pLFO3->ExtController) {              case ::gig::lfo3_ctrl_internal_aftertouch:
354                      pLFO3->update(itEvent->Param.CC.Value);                  lfo3_internal_depth  = pRegion->LFO3InternalDepth;
355                  }                  pLFO3->ExtController = CTRL_TABLE_IDX_AFTERTOUCH;
356                  if (pDimRgn->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&                  bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
357                      itEvent->Param.CC.Controller == pDimRgn->AttenuationController.controller_number) {                  break;
358                      processCrossFadeEvent(itEvent);              default:
359                  }                  lfo3_internal_depth  = 0;
360              } else if (itEvent->Type == Event::type_pitchbend) { // if pitch bend event                  pLFO3->ExtController = 0; // no external controller
361                  processPitchEvent(itEvent);                  bLFO3Enabled         = false;
362              }          }
363            if (bLFO3Enabled) {
364                pLFO3->trigger(pRegion->LFO3Frequency,
365                               start_level_mid,
366                               lfo3_internal_depth,
367                               pRegion->LFO3ControlDepth,
368                               false,
369                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
370                pLFO3->update(pLFO3->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO3->ExtController] : 0);
371          }          }
372      }      }
373    
374      void Voice::processPitchEvent(RTList<Event>::Iterator& itEvent) {      float Voice::CalculateCutoffBase(uint8_t MIDIKeyVelocity) {
375          const float pitch = RTMath::CentsToFreqRatio(((double) itEvent->Param.Pitch.Pitch / 8192.0) * 200.0); // +-two semitones = +-200 cents          float cutoff = pRegion->GetVelocityCutoff(MIDIKeyVelocity);
376          finalSynthesisParameters.fFinalPitch *= pitch;          if (pRegion->VCFKeyboardTracking) {
377          PitchBend = pitch;              cutoff *= RTMath::CentsToFreqRatioUnlimited((MIDIKey() - pRegion->VCFKeyboardTrackingBreakpoint) * 100);
378      }          }
379            return cutoff;
380      void Voice::processCrossFadeEvent(RTList<Event>::Iterator& itEvent) {      }
381          CrossfadeVolume = CrossfadeAttenuation(itEvent->Param.CC.Value);  
382          #if CONFIG_PROCESS_MUTED_CHANNELS      float Voice::CalculateFinalCutoff(float cutoffBase) {
383          const float effectiveVolume = CrossfadeVolume * Volume * (pEngineChannel->GetMute() ? 0 : pEngineChannel->GlobalVolume);          int cvalue;
384          #else          if (VCFCutoffCtrl.controller) {
385          const float effectiveVolume = CrossfadeVolume * Volume * pEngineChannel->GlobalVolume;              cvalue = GetGigEngineChannel()->ControllerTable[VCFCutoffCtrl.controller];
386          #endif              if (pRegion->VCFCutoffControllerInvert) cvalue = 127 - cvalue;
387          fFinalVolume = effectiveVolume;              // VCFVelocityScale in this case means Minimum cutoff
388      }              if (cvalue < pRegion->VCFVelocityScale) cvalue = pRegion->VCFVelocityScale;
389            }
390            else {
391                cvalue = pRegion->VCFCutoff;
392            }
393            float fco = cutoffBase * float(cvalue);
394            if (fco > 127.0f) fco = 127.0f;
395    
396      void Voice::processCutoffEvent(RTList<Event>::Iterator& itEvent) {          return fco;
         int ccvalue = itEvent->Param.CC.Value;  
         if (VCFCutoffCtrl.value == ccvalue) return;  
         VCFCutoffCtrl.value == ccvalue;  
         if (pDimRgn->VCFCutoffControllerInvert)  ccvalue = 127 - ccvalue;  
         if (ccvalue < pDimRgn->VCFVelocityScale) ccvalue = pDimRgn->VCFVelocityScale;  
         float cutoff = CutoffBase * float(ccvalue) * 0.00787402f; // (1 / 127)  
         if (cutoff > 1.0) cutoff = 1.0;  
         cutoff = exp(cutoff * FILTER_CUTOFF_COEFF) * CONFIG_FILTER_CUTOFF_MIN - CONFIG_FILTER_CUTOFF_MIN;  
         VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of fFinalCutoff next time  
         fFinalCutoff = cutoff;  
397      }      }
398    
399      void Voice::processResonanceEvent(RTList<Event>::Iterator& itEvent) {      uint8_t Voice::GetVCFCutoffCtrl() {
400          // convert absolute controller value to differential          uint8_t ctrl;
401          const int ctrldelta = itEvent->Param.CC.Value - VCFResonanceCtrl.value;          switch (pRegion->VCFCutoffController) {
402          VCFResonanceCtrl.value = itEvent->Param.CC.Value;              case ::gig::vcf_cutoff_ctrl_modwheel:
403          const float resonancedelta = (float) ctrldelta * 0.00787f; // 0.0..1.0                  ctrl = 1;
404          fFinalResonance += resonancedelta;                  break;
405          // needed for initialization of parameter              case ::gig::vcf_cutoff_ctrl_effect1:
406          VCFResonanceCtrl.fvalue = itEvent->Param.CC.Value * 0.00787f;                  ctrl = 12;
407      }                  break;
408                case ::gig::vcf_cutoff_ctrl_effect2:
409      /**                  ctrl = 13;
410       *  Synthesizes the current audio fragment for this voice.                  break;
411       *              case ::gig::vcf_cutoff_ctrl_breath:
412       *  @param Samples - number of sample points to be rendered in this audio                  ctrl = 2;
413       *                   fragment cycle                  break;
414       *  @param pSrc    - pointer to input sample data              case ::gig::vcf_cutoff_ctrl_foot:
415       *  @param Skip    - number of sample points to skip in output buffer                  ctrl = 4;
416       */                  break;
417      void Voice::Synthesize(uint Samples, sample_t* pSrc, uint Skip) {              case ::gig::vcf_cutoff_ctrl_sustainpedal:
418          finalSynthesisParameters.pOutLeft  = &pEngineChannel->pOutputLeft[Skip];                  ctrl = 64;
419          finalSynthesisParameters.pOutRight = &pEngineChannel->pOutputRight[Skip];                  break;
420          finalSynthesisParameters.pSrc      = pSrc;              case ::gig::vcf_cutoff_ctrl_softpedal:
421                    ctrl = 67;
422          RTList<Event>::Iterator itCCEvent = pEngineChannel->pEvents->first();                  break;
423          RTList<Event>::Iterator itNoteEvent = pEngineChannel->pMIDIKeyInfo[MIDIKey].pEvents->first();              case ::gig::vcf_cutoff_ctrl_genpurpose7:
424                    ctrl = 82;
425          if (Skip) { // skip events that happened before this voice was triggered                  break;
426              while (itCCEvent && itCCEvent->FragmentPos() <= Skip) ++itCCEvent;              case ::gig::vcf_cutoff_ctrl_genpurpose8:
427              while (itNoteEvent && itNoteEvent->FragmentPos() <= Skip) ++itNoteEvent;                  ctrl = 83;
428          }                  break;
429                case ::gig::vcf_cutoff_ctrl_aftertouch:
430          uint i = Skip;                  ctrl = CTRL_TABLE_IDX_AFTERTOUCH;
431          while (i < Samples) {                  break;
432              int iSubFragmentEnd = RTMath::Min(i + CONFIG_DEFAULT_SUBFRAGMENT_SIZE, Samples);              case ::gig::vcf_cutoff_ctrl_none:
433                default:
434              // initialize all final synthesis parameters                  ctrl = 0;
435              finalSynthesisParameters.fFinalPitch = PitchBase * PitchBend;                  break;
436              #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);  
             }  
437    
438              // do we need resampling?          return ctrl;
439              const float __PLUS_ONE_CENT  = 1.000577789506554859250142541782224725466f;      }
             const float __MINUS_ONE_CENT = 0.9994225441413807496009516495583113737666f;  
             const bool bResamplingRequired = !(finalSynthesisParameters.fFinalPitch <= __PLUS_ONE_CENT &&  
                                                finalSynthesisParameters.fFinalPitch >= __MINUS_ONE_CENT);  
             SYNTHESIS_MODE_SET_INTERPOLATE(SynthesisMode, bResamplingRequired);  
   
             // prepare final synthesis parameters structure  
             finalSynthesisParameters.fFinalVolumeLeft  = fFinalVolume * PanLeft;  
             finalSynthesisParameters.fFinalVolumeRight = fFinalVolume * PanRight;  
             finalSynthesisParameters.uiToGo            = iSubFragmentEnd - i;  
   
             // render audio for one subfragment  
             RunSynthesisFunction(SynthesisMode, &finalSynthesisParameters, &loop);  
   
             // 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  
440    
441              i = iSubFragmentEnd;      uint8_t Voice::GetVCFResonanceCtrl() {
442            uint8_t ctrl;
443            switch (pRegion->VCFResonanceController) {
444                case ::gig::vcf_res_ctrl_genpurpose3:
445                    ctrl = 18;
446                    break;
447                case ::gig::vcf_res_ctrl_genpurpose4:
448                    ctrl = 19;
449                    break;
450                case ::gig::vcf_res_ctrl_genpurpose5:
451                    ctrl = 80;
452                    break;
453                case ::gig::vcf_res_ctrl_genpurpose6:
454                    ctrl = 81;
455                    break;
456                case ::gig::vcf_res_ctrl_none:
457                default:
458                    ctrl = 0;
459          }          }
     }  
460    
461      /**          return ctrl;
462       *  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  
463    
464          if (itTriggerEvent && itKillEvent->FragmentPos() <= itTriggerEvent->FragmentPos()) return;      void Voice::TriggerEG1(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
465          this->itKillEvent = itKillEvent;          EG1.trigger(pRegion->EG1PreAttack,
466                        RTMath::Max(pRegion->EG1Attack, 0.0316) * egInfo.Attack,
467                        pRegion->EG1Hold,
468                        pRegion->EG1Decay1 * egInfo.Decay * velrelease,
469                        pRegion->EG1Decay2 * egInfo.Decay * velrelease,
470                        pRegion->EG1InfiniteSustain,
471                        pRegion->EG1Sustain,
472                        RTMath::Max(pRegion->EG1Release * velrelease, 0.014) * egInfo.Release,
473                        velocityAttenuation,
474                        sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
475        }
476    
477        void Voice::TriggerEG2(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
478            EG2.trigger(uint(RgnInfo.EG2PreAttack),
479                        RgnInfo.EG2Attack * egInfo.Attack,
480                        false,
481                        RgnInfo.EG2Decay1 * egInfo.Decay * velrelease,
482                        RgnInfo.EG2Decay2 * egInfo.Decay * velrelease,
483                        RgnInfo.EG2InfiniteSustain,
484                        uint(RgnInfo.EG2Sustain),
485                        RgnInfo.EG2Release * egInfo.Release * velrelease,
486                        velocityAttenuation,
487                        sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
488        }
489    
490        void Voice::ProcessGroupEvent(RTList<Event>::Iterator& itEvent) {
491            dmsg(4,("Voice %p processGroupEvents event type=%d", (void*)this, itEvent->Type));
492    
493            // TODO: The SustainPedal condition could be wrong, maybe the
494            // check should be if this Voice is in release stage or is a
495            // release sample instead. Need to test this in GSt.
496            // -- Andreas
497            //
498            // Commented sustain pedal check out. I don't think voices of the same
499            // note should be stopped at all, because it doesn't sound naturally
500            // with a drumkit.
501            // -- Christian, 2013-01-08
502            if (itEvent->Param.Note.Key != HostKey() /*||
503                !GetGigEngineChannel()->SustainPedal*/) {
504                dmsg(4,("Voice %p - kill", (void*)this));
505    
506                // kill the voice fast
507                pEG1->enterFadeOutStage();
508            }
509        }
510    
511        void Voice::CalculateFadeOutCoeff(float FadeOutTime, float SampleRate) {
512            EG1.CalculateFadeOutCoeff(FadeOutTime, SampleRate);
513        }
514    
515        int Voice::CalculatePan(uint8_t pan) {
516            int p;
517            // Gst behaviour: -64 and 63 are special cases
518            if (RgnInfo.Pan == -64)     p = pan * 2 - 127;
519            else if (RgnInfo.Pan == 63) p = pan * 2;
520            else                        p = pan + RgnInfo.Pan;
521    
522            if (p < 0) return 0;
523            if (p > 127) return 127;
524            return p;
525      }      }
526    
527  }} // namespace LinuxSampler::gig  }} // namespace LinuxSampler::gig
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