/[svn]/linuxsampler/trunk/src/engines/gig/Voice.cpp
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revision 796 by persson, Sun Oct 30 08:35:13 2005 UTC revision 2408 by persson, Sat Feb 2 08:22:49 2013 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 - 2013 Christian Schoenebeck and Grigor Iliev      *
8   *                                                                         *   *                                                                         *
9   *   This program is free software; you can redistribute it and/or modify  *   *   This program is free software; you can redistribute it and/or modify  *
10   *   it under the terms of the GNU General Public License as published by  *   *   it under the terms of the GNU General Public License as published by  *
# Line 24  Line 25 
25  #include "../../common/Features.h"  #include "../../common/Features.h"
26  #include "Synthesizer.h"  #include "Synthesizer.h"
27  #include "Profiler.h"  #include "Profiler.h"
28    #include "Engine.h"
29    #include "EngineChannel.h"
30    
31  #include "Voice.h"  #include "Voice.h"
32    
33  namespace LinuxSampler { namespace gig {  namespace LinuxSampler { namespace gig {
34    
     const float Voice::FILTER_CUTOFF_COEFF(CalculateFilterCutoffCoeff());  
   
     float Voice::CalculateFilterCutoffCoeff() {  
         return log(CONFIG_FILTER_CUTOFF_MAX / CONFIG_FILTER_CUTOFF_MIN);  
     }  
   
35      Voice::Voice() {      Voice::Voice() {
36          pEngine     = NULL;          pEngine = NULL;
37          pDiskThread = NULL;          pEG1 = &EG1;
38          PlaybackState = playback_state_end;          pEG2 = &EG2;
         pLFO1 = new LFOUnsigned(1.0f);  // amplitude EG (0..1 range)  
         pLFO2 = new LFOUnsigned(1.0f);  // filter EG (0..1 range)  
         pLFO3 = new LFOSigned(1200.0f); // pitch EG (-1200..+1200 range)  
         KeyGroup = 0;  
         SynthesisMode = 0; // set all mode bits to 0 first  
         // select synthesis implementation (currently either pure C++ or MMX+SSE(1))  
         #if CONFIG_ASM && ARCH_X86  
         SYNTHESIS_MODE_SET_IMPLEMENTATION(SynthesisMode, Features::supportsMMX() && Features::supportsSSE());  
         #else  
         SYNTHESIS_MODE_SET_IMPLEMENTATION(SynthesisMode, false);  
         #endif  
         SYNTHESIS_MODE_SET_PROFILING(SynthesisMode, Profiler::isEnabled());  
   
         finalSynthesisParameters.filterLeft.Reset();  
         finalSynthesisParameters.filterRight.Reset();  
39      }      }
40    
41      Voice::~Voice() {      Voice::~Voice() {
         if (pLFO1) delete pLFO1;  
         if (pLFO2) delete pLFO2;  
         if (pLFO3) delete pLFO3;  
42      }      }
43    
44      void Voice::SetEngine(Engine* pEngine) {      EngineChannel* Voice::GetGigEngineChannel() {
45          this->pEngine     = pEngine;          return static_cast<EngineChannel*>(pEngineChannel);
         this->pDiskThread = pEngine->pDiskThread;  
         dmsg(6,("Voice::SetEngine()\n"));  
46      }      }
47    
48      /**      void Voice::SetEngine(LinuxSampler::Engine* pEngine) {
49       *  Initializes and triggers the voice, a disk stream will be launched if          Engine* engine = static_cast<Engine*>(pEngine);
50       *  needed.          this->pEngine     = engine;
51       *          this->pDiskThread = engine->pDiskThread;
52       *  @param pEngineChannel - engine channel on which this voice was ordered          dmsg(6,("Voice::SetEngine()\n"));
53       *  @param itNoteOnEvent  - event that caused triggering of this voice      }
      *  @param PitchBend      - MIDI detune factor (-8192 ... +8191)  
      *  @param pDimRgn        - points to the dimension region which provides sample wave(s) and articulation data  
      *  @param VoiceType      - type of this voice  
      *  @param iKeyGroup      - a value > 0 defines a key group in which this voice is member of  
      *  @returns 0 on success, a value < 0 if the voice wasn't triggered  
      *           (either due to an error or e.g. because no region is  
      *           defined for the given key)  
      */  
     int Voice::Trigger(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent, int PitchBend, ::gig::DimensionRegion* pDimRgn, type_t VoiceType, int iKeyGroup) {  
         this->pEngineChannel = pEngineChannel;  
         this->pDimRgn        = pDimRgn;  
   
         #if CONFIG_DEVMODE  
         if (itNoteOnEvent->FragmentPos() > pEngine->MaxSamplesPerCycle) { // just a sanity check for debugging  
             dmsg(1,("Voice::Trigger(): ERROR, TriggerDelay > Totalsamples\n"));  
         }  
         #endif // CONFIG_DEVMODE  
   
         Type            = VoiceType;  
         MIDIKey         = itNoteOnEvent->Param.Note.Key;  
         PlaybackState   = playback_state_init; // mark voice as triggered, but no audio rendered yet  
         Delay           = itNoteOnEvent->FragmentPos();  
         itTriggerEvent  = itNoteOnEvent;  
         itKillEvent     = Pool<Event>::Iterator();  
         KeyGroup        = iKeyGroup;  
         pSample         = pDimRgn->pSample; // sample won't change until the voice is finished  
   
         // calculate volume  
         const double velocityAttenuation = pDimRgn->GetVelocityAttenuation(itNoteOnEvent->Param.Note.Velocity);  
   
         Volume = velocityAttenuation / 32768.0f; // we downscale by 32768 to convert from int16 value range to DSP value range (which is -1.0..1.0)  
   
         Volume *= pDimRgn->SampleAttenuation;  
   
         // the volume of release triggered samples depends on note length  
         if (Type == type_release_trigger) {  
             float noteLength = float(pEngine->FrameTime + Delay -  
                                      pEngineChannel->pMIDIKeyInfo[MIDIKey].NoteOnTime) / pEngine->SampleRate;  
             float attenuation = 1 - 0.01053 * (256 >> pDimRgn->ReleaseTriggerDecay) * noteLength;  
             if (attenuation <= 0) return -1;  
             Volume *= attenuation;  
         }  
   
         // select channel mode (mono or stereo)  
         SYNTHESIS_MODE_SET_CHANNELS(SynthesisMode, pSample->Channels == 2);  
   
         // get starting crossfade volume level  
         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;  
         }  
54    
55          PanLeft  = 1.0f - float(RTMath::Max(pDimRgn->Pan, 0)) /  63.0f;      Voice::SampleInfo Voice::GetSampleInfo() {
56          PanRight = 1.0f - float(RTMath::Min(pDimRgn->Pan, 0)) / -64.0f;          SampleInfo si;
57            si.SampleRate       = pSample->SamplesPerSecond;
58            si.ChannelCount     = pSample->Channels;
59            si.FrameSize        = pSample->FrameSize;
60            si.BitDepth         = pSample->BitDepth;
61            si.TotalFrameCount  = pSample->SamplesTotal;
62    
63          finalSynthesisParameters.dPos = pDimRgn->SampleStartOffset; // offset where we should start playback of sample (0 - 2000 sample points)          si.HasLoops       = pRegion->SampleLoops;
64          Pos = pDimRgn->SampleStartOffset;          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          // Check if the sample needs disk streaming or is too short for that          return si;
70          long cachedsamples = pSample->GetCache().Size / pSample->FrameSize;      }
         DiskVoice          = cachedsamples < pSample->SamplesTotal;  
   
         if (DiskVoice) { // voice to be streamed from disk  
             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)  
   
             // check if there's a loop defined which completely fits into the cached (RAM) part of the sample  
             if (pSample->Loops && pSample->LoopEnd <= MaxRAMPos) {  
                 RAMLoop            = true;  
                 loop.uiTotalCycles = pSample->LoopPlayCount;  
                 loop.uiCyclesLeft  = pSample->LoopPlayCount;  
                 loop.uiStart       = pSample->LoopStart;  
                 loop.uiEnd         = pSample->LoopEnd;  
                 loop.uiSize        = pSample->LoopSize;  
             }  
             else RAMLoop = false;  
71    
72              if (pDiskThread->OrderNewStream(&DiskStreamRef, pSample, MaxRAMPos, !RAMLoop) < 0) {      Voice::RegionInfo Voice::GetRegionInfo() {
73                  dmsg(1,("Disk stream order failed!\n"));          RegionInfo ri;
74                  KillImmediately();          ri.UnityNote = pRegion->UnityNote;
75                  return -1;          ri.FineTune  = pRegion->FineTune;
76              }          ri.Pan       = pRegion->Pan;
77              dmsg(4,("Disk voice launched (cached samples: %d, total Samples: %d, MaxRAMPos: %d, RAMLooping: %s)\n", cachedsamples, pSample->SamplesTotal, MaxRAMPos, (RAMLoop) ? "yes" : "no"));          ri.SampleStartOffset = pRegion->SampleStartOffset;
         }  
         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"));  
         }  
78    
79            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          // calculate initial pitch value          ri.EG3Attack     = pRegion->EG3Attack;
88          {          ri.EG3Depth      = pRegion->EG3Depth;
89              double pitchbasecents = pDimRgn->FineTune + (int) pEngine->ScaleTuning[MIDIKey % 12];          ri.VCFEnabled    = pRegion->VCFEnabled;
90              if (pDimRgn->PitchTrack) pitchbasecents += (MIDIKey - (int) pDimRgn->UnityNote) * 100;          ri.VCFType       = Filter::vcf_type_t(pRegion->VCFType);
91              this->PitchBase = RTMath::CentsToFreqRatio(pitchbasecents) * (double(pSample->SamplesPerSecond) / double(pEngine->SampleRate));          ri.VCFResonance  = pRegion->VCFResonance;
             this->PitchBend = RTMath::CentsToFreqRatio(((double) PitchBend / 8192.0) * 200.0); // pitchbend wheel +-2 semitones = 200 cents  
         }  
   
         // the length of the decay and release curves are dependent on the velocity  
         const double velrelease = 1 / pDimRgn->GetVelocityRelease(itNoteOnEvent->Param.Note.Velocity);  
   
         // setup EG 1 (VCA EG)  
         {  
             // get current value of EG1 controller  
             double eg1controllervalue;  
             switch (pDimRgn->EG1Controller.type) {  
                 case ::gig::eg1_ctrl_t::type_none: // no controller defined  
                     eg1controllervalue = 0;  
                     break;  
                 case ::gig::eg1_ctrl_t::type_channelaftertouch:  
                     eg1controllervalue = 0; // TODO: aftertouch not yet supported  
                     break;  
                 case ::gig::eg1_ctrl_t::type_velocity:  
                     eg1controllervalue = itNoteOnEvent->Param.Note.Velocity;  
                     break;  
                 case ::gig::eg1_ctrl_t::type_controlchange: // MIDI control change controller  
                     eg1controllervalue = pEngineChannel->ControllerTable[pDimRgn->EG1Controller.controller_number];  
                     break;  
             }  
             if (pDimRgn->EG1ControllerInvert) eg1controllervalue = 127 - eg1controllervalue;  
92    
93              // calculate influence of EG1 controller on EG1's parameters          ri.ReleaseTriggerDecay = 0.01053 * (256 >> pRegion->ReleaseTriggerDecay);
             // (eg1attack is different from the others)  
             double eg1attack  = (pDimRgn->EG1ControllerAttackInfluence)  ?  
                 1 + 0.031 * (double) (pDimRgn->EG1ControllerAttackInfluence == 1 ?  
                                       1 : 1 << pDimRgn->EG1ControllerAttackInfluence) * eg1controllervalue : 1.0;  
             double eg1decay   = (pDimRgn->EG1ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pDimRgn->EG1ControllerDecayInfluence)   * eg1controllervalue : 1.0;  
             double eg1release = (pDimRgn->EG1ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pDimRgn->EG1ControllerReleaseInfluence) * eg1controllervalue : 1.0;  
   
             EG1.trigger(pDimRgn->EG1PreAttack,  
                         pDimRgn->EG1Attack * eg1attack,  
                         pDimRgn->EG1Hold,  
                         pDimRgn->EG1Decay1 * eg1decay * velrelease,  
                         pDimRgn->EG1Decay2 * eg1decay * velrelease,  
                         pDimRgn->EG1InfiniteSustain,  
                         pDimRgn->EG1Sustain,  
                         pDimRgn->EG1Release * eg1release * velrelease,  
                         velocityAttenuation,  
                         pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
         }  
94    
95            return ri;
96        }
97    
98          // setup EG 2 (VCF Cutoff EG)      Voice::InstrumentInfo Voice::GetInstrumentInfo() {
99          {          InstrumentInfo ii;
100              // get current value of EG2 controller          ii.FineTune = GetGigEngineChannel()->pInstrument->FineTune;
101              double eg2controllervalue;          ii.PitchbendRange = GetGigEngineChannel()->pInstrument->PitchbendRange;
             switch (pDimRgn->EG2Controller.type) {  
                 case ::gig::eg2_ctrl_t::type_none: // no controller defined  
                     eg2controllervalue = 0;  
                     break;  
                 case ::gig::eg2_ctrl_t::type_channelaftertouch:  
                     eg2controllervalue = 0; // TODO: aftertouch not yet supported  
                     break;  
                 case ::gig::eg2_ctrl_t::type_velocity:  
                     eg2controllervalue = itNoteOnEvent->Param.Note.Velocity;  
                     break;  
                 case ::gig::eg2_ctrl_t::type_controlchange: // MIDI control change controller  
                     eg2controllervalue = pEngineChannel->ControllerTable[pDimRgn->EG2Controller.controller_number];  
                     break;  
             }  
             if (pDimRgn->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue;  
102    
103              // calculate influence of EG2 controller on EG2's parameters          return ii;
104              double eg2attack  = (pDimRgn->EG2ControllerAttackInfluence)  ? 1 + 0.00775 * (double) (1 << pDimRgn->EG2ControllerAttackInfluence)  * eg2controllervalue : 1.0;      }
             double eg2decay   = (pDimRgn->EG2ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pDimRgn->EG2ControllerDecayInfluence)   * eg2controllervalue : 1.0;  
             double eg2release = (pDimRgn->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pDimRgn->EG2ControllerReleaseInfluence) * eg2controllervalue : 1.0;  
   
             EG2.trigger(pDimRgn->EG2PreAttack,  
                         pDimRgn->EG2Attack * eg2attack,  
                         false,  
                         pDimRgn->EG2Decay1 * eg2decay * velrelease,  
                         pDimRgn->EG2Decay2 * eg2decay * velrelease,  
                         pDimRgn->EG2InfiniteSustain,  
                         pDimRgn->EG2Sustain,  
                         pDimRgn->EG2Release * eg2release * velrelease,  
                         velocityAttenuation,  
                         pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
         }  
105    
106        double Voice::GetSampleAttenuation() {
107            return pRegion->SampleAttenuation;
108        }
109    
110          // setup EG 3 (VCO EG)      double Voice::GetVelocityAttenuation(uint8_t MIDIKeyVelocity) {
111          {          return pRegion->GetVelocityAttenuation(MIDIKeyVelocity);
112            double eg3depth = RTMath::CentsToFreqRatio(pDimRgn->EG3Depth);      }
           EG3.trigger(eg3depth, pDimRgn->EG3Attack, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
         }  
113    
114        double Voice::GetVelocityRelease(uint8_t MIDIKeyVelocity) {
115            return pRegion->GetVelocityRelease(MIDIKeyVelocity);
116        }
117    
118          // setup LFO 1 (VCA LFO)      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              uint16_t lfo1_internal_depth;              if (pRegion->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&
121              switch (pDimRgn->LFO1Controller) {                  itEvent->Param.CC.Controller == pRegion->AttenuationController.controller_number) {
122                  case ::gig::lfo1_ctrl_internal:                  CrossfadeSmoother.update(AbstractEngine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.CC.Value)]);
                     lfo1_internal_depth  = pDimRgn->LFO1InternalDepth;  
                     pLFO1->ExtController = 0; // no external controller  
                     bLFO1Enabled         = (lfo1_internal_depth > 0);  
                     break;  
                 case ::gig::lfo1_ctrl_modwheel:  
                     lfo1_internal_depth  = 0;  
                     pLFO1->ExtController = 1; // MIDI controller 1  
                     bLFO1Enabled         = (pDimRgn->LFO1ControlDepth > 0);  
                     break;  
                 case ::gig::lfo1_ctrl_breath:  
                     lfo1_internal_depth  = 0;  
                     pLFO1->ExtController = 2; // MIDI controller 2  
                     bLFO1Enabled         = (pDimRgn->LFO1ControlDepth > 0);  
                     break;  
                 case ::gig::lfo1_ctrl_internal_modwheel:  
                     lfo1_internal_depth  = pDimRgn->LFO1InternalDepth;  
                     pLFO1->ExtController = 1; // MIDI controller 1  
                     bLFO1Enabled         = (lfo1_internal_depth > 0 || pDimRgn->LFO1ControlDepth > 0);  
                     break;  
                 case ::gig::lfo1_ctrl_internal_breath:  
                     lfo1_internal_depth  = pDimRgn->LFO1InternalDepth;  
                     pLFO1->ExtController = 2; // MIDI controller 2  
                     bLFO1Enabled         = (lfo1_internal_depth > 0 || pDimRgn->LFO1ControlDepth > 0);  
                     break;  
                 default:  
                     lfo1_internal_depth  = 0;  
                     pLFO1->ExtController = 0; // no external controller  
                     bLFO1Enabled         = false;  
123              }              }
             if (bLFO1Enabled) pLFO1->trigger(pDimRgn->LFO1Frequency,  
                                              start_level_max,  
                                              lfo1_internal_depth,  
                                              pDimRgn->LFO1ControlDepth,  
                                              pDimRgn->LFO1FlipPhase,  
                                              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 LFO 2 (VCF Cutoff LFO)          VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of fFinalCutoff next time
137          {          fFinalCutoff = cutoff;
138              uint16_t lfo2_internal_depth;      }
             switch (pDimRgn->LFO2Controller) {  
                 case ::gig::lfo2_ctrl_internal:  
                     lfo2_internal_depth  = pDimRgn->LFO2InternalDepth;  
                     pLFO2->ExtController = 0; // no external controller  
                     bLFO2Enabled         = (lfo2_internal_depth > 0);  
                     break;  
                 case ::gig::lfo2_ctrl_modwheel:  
                     lfo2_internal_depth  = 0;  
                     pLFO2->ExtController = 1; // MIDI controller 1  
                     bLFO2Enabled         = (pDimRgn->LFO2ControlDepth > 0);  
                     break;  
                 case ::gig::lfo2_ctrl_foot:  
                     lfo2_internal_depth  = 0;  
                     pLFO2->ExtController = 4; // MIDI controller 4  
                     bLFO2Enabled         = (pDimRgn->LFO2ControlDepth > 0);  
                     break;  
                 case ::gig::lfo2_ctrl_internal_modwheel:  
                     lfo2_internal_depth  = pDimRgn->LFO2InternalDepth;  
                     pLFO2->ExtController = 1; // MIDI controller 1  
                     bLFO2Enabled         = (lfo2_internal_depth > 0 || pDimRgn->LFO2ControlDepth > 0);  
                     break;  
                 case ::gig::lfo2_ctrl_internal_foot:  
                     lfo2_internal_depth  = pDimRgn->LFO2InternalDepth;  
                     pLFO2->ExtController = 4; // MIDI controller 4  
                     bLFO2Enabled         = (lfo2_internal_depth > 0 || pDimRgn->LFO2ControlDepth > 0);  
                     break;  
                 default:  
                     lfo2_internal_depth  = 0;  
                     pLFO2->ExtController = 0; // no external controller  
                     bLFO2Enabled         = false;  
             }  
             if (bLFO2Enabled) pLFO2->trigger(pDimRgn->LFO2Frequency,  
                                              start_level_max,  
                                              lfo2_internal_depth,  
                                              pDimRgn->LFO2ControlDepth,  
                                              pDimRgn->LFO2FlipPhase,  
                                              pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
         }  
   
139    
140          // setup LFO 3 (VCO LFO)      double Voice::CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity) {
141          {          float crossfadeVolume;
142              uint16_t lfo3_internal_depth;          switch (pRegion->AttenuationController.type) {
143              switch (pDimRgn->LFO3Controller) {              case ::gig::attenuation_ctrl_t::type_channelaftertouch:
144                  case ::gig::lfo3_ctrl_internal:                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[128])];
145                      lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;                  break;
146                      pLFO3->ExtController = 0; // no external controller              case ::gig::attenuation_ctrl_t::type_velocity:
147                      bLFO3Enabled         = (lfo3_internal_depth > 0);                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(MIDIKeyVelocity)];
148                      break;                  break;
149                  case ::gig::lfo3_ctrl_modwheel:              case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate
150                      lfo3_internal_depth  = 0;                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[pRegion->AttenuationController.controller_number])];
151                      pLFO3->ExtController = 1; // MIDI controller 1                  break;
152                      bLFO3Enabled         = (pDimRgn->LFO3ControlDepth > 0);              case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined
153                      break;              default:
154                  case ::gig::lfo3_ctrl_aftertouch:                  crossfadeVolume = 1.0f;
                     lfo3_internal_depth  = 0;  
                     pLFO3->ExtController = 0; // TODO: aftertouch not implemented yet  
                     bLFO3Enabled         = false; // see TODO comment in line above  
                     break;  
                 case ::gig::lfo3_ctrl_internal_modwheel:  
                     lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;  
                     pLFO3->ExtController = 1; // MIDI controller 1  
                     bLFO3Enabled         = (lfo3_internal_depth > 0 || pDimRgn->LFO3ControlDepth > 0);  
                     break;  
                 case ::gig::lfo3_ctrl_internal_aftertouch:  
                     lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;  
                     pLFO1->ExtController = 0; // TODO: aftertouch not implemented yet  
                     bLFO3Enabled         = (lfo3_internal_depth > 0 /*|| pDimRgn->LFO3ControlDepth > 0*/); // see TODO comment in line above  
                     break;  
                 default:  
                     lfo3_internal_depth  = 0;  
                     pLFO3->ExtController = 0; // no external controller  
                     bLFO3Enabled         = false;  
             }  
             if (bLFO3Enabled) pLFO3->trigger(pDimRgn->LFO3Frequency,  
                                              start_level_mid,  
                                              lfo3_internal_depth,  
                                              pDimRgn->LFO3ControlDepth,  
                                              false,  
                                              pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
155          }          }
156    
157            return crossfadeVolume;
158        }
159    
160          #if CONFIG_FORCE_FILTER      double Voice::GetEG1ControllerValue(uint8_t MIDIKeyVelocity) {
161          const bool bUseFilter = true;          double eg1controllervalue = 0;
162          #else // use filter only if instrument file told so          switch (pRegion->EG1Controller.type) {
163          const bool bUseFilter = pDimRgn->VCFEnabled;              case ::gig::eg1_ctrl_t::type_none: // no controller defined
164          #endif // CONFIG_FORCE_FILTER                  eg1controllervalue = 0;
165          SYNTHESIS_MODE_SET_FILTER(SynthesisMode, bUseFilter);                  break;
166          if (bUseFilter) {              case ::gig::eg1_ctrl_t::type_channelaftertouch:
167              #ifdef CONFIG_OVERRIDE_CUTOFF_CTRL                  eg1controllervalue = GetGigEngineChannel()->ControllerTable[128];
168              VCFCutoffCtrl.controller = CONFIG_OVERRIDE_CUTOFF_CTRL;                  break;
169              #else // use the one defined in the instrument file              case ::gig::eg1_ctrl_t::type_velocity:
170              switch (pDimRgn->VCFCutoffController) {                  eg1controllervalue = MIDIKeyVelocity;
171                  case ::gig::vcf_cutoff_ctrl_modwheel:                  break;
172                      VCFCutoffCtrl.controller = 1;              case ::gig::eg1_ctrl_t::type_controlchange: // MIDI control change controller
173                      break;                  eg1controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG1Controller.controller_number];
174                  case ::gig::vcf_cutoff_ctrl_effect1:                  break;
175                      VCFCutoffCtrl.controller = 12;          }
176                      break;          if (pRegion->EG1ControllerInvert) eg1controllervalue = 127 - eg1controllervalue;
                 case ::gig::vcf_cutoff_ctrl_effect2:  
                     VCFCutoffCtrl.controller = 13;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_breath:  
                     VCFCutoffCtrl.controller = 2;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_foot:  
                     VCFCutoffCtrl.controller = 4;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_sustainpedal:  
                     VCFCutoffCtrl.controller = 64;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_softpedal:  
                     VCFCutoffCtrl.controller = 67;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_genpurpose7:  
                     VCFCutoffCtrl.controller = 82;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_genpurpose8:  
                     VCFCutoffCtrl.controller = 83;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_aftertouch: //TODO: not implemented yet  
                 case ::gig::vcf_cutoff_ctrl_none:  
                 default:  
                     VCFCutoffCtrl.controller = 0;  
                     break;  
             }  
             #endif // CONFIG_OVERRIDE_CUTOFF_CTRL  
   
             #ifdef CONFIG_OVERRIDE_RESONANCE_CTRL  
             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  
177    
178              #ifndef CONFIG_OVERRIDE_FILTER_TYPE          return eg1controllervalue;
179              finalSynthesisParameters.filterLeft.SetType(pDimRgn->VCFType);      }
             finalSynthesisParameters.filterRight.SetType(pDimRgn->VCFType);  
             #else // override filter type  
             FilterLeft.SetType(CONFIG_OVERRIDE_FILTER_TYPE);  
             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;  
180    
181              int cvalue;      Voice::EGInfo Voice::CalculateEG1ControllerInfluence(double eg1ControllerValue) {
182              if (VCFCutoffCtrl.controller) {          EGInfo eg;
183                  cvalue = pEngineChannel->ControllerTable[VCFCutoffCtrl.controller];          // (eg1attack is different from the others)
184                  if (pDimRgn->VCFCutoffControllerInvert) cvalue = 127 - cvalue;          if (pRegion->EG1Attack < 1e-8 && // attack in gig == 0
185                  // VCFVelocityScale in this case means Minimum cutoff              (pRegion->EG1ControllerAttackInfluence == 0 ||
186                  if (cvalue < pDimRgn->VCFVelocityScale) cvalue = pDimRgn->VCFVelocityScale;               eg1ControllerValue <= 10)) { // strange GSt special case
187              }              eg.Attack = 0; // this will force the attack to be 0 in the call to EG1.trigger
188              else {          } else {
189                  cvalue = pDimRgn->VCFCutoff;              eg.Attack  = (pRegion->EG1ControllerAttackInfluence)  ?
190              }                  1 + 0.031 * (double) (pRegion->EG1ControllerAttackInfluence == 1 ?
191              cutoff *= float(cvalue) * 0.00787402f; // (1 / 127)                                        1 : 1 << pRegion->EG1ControllerAttackInfluence) * eg1ControllerValue : 1.0;
192              if (cutoff > 1.0) cutoff = 1.0;          }
193              cutoff = (cutoff < 0.5 ? cutoff * 4826 - 1 : cutoff * 5715 - 449);          eg.Decay   = (pRegion->EG1ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerDecayInfluence)   * eg1ControllerValue : 1.0;
194              if (cutoff < 1.0) cutoff = 1.0;          eg.Release = (pRegion->EG1ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerReleaseInfluence) * eg1ControllerValue : 1.0;
195    
196            return eg;
197        }
198    
199        double Voice::GetEG2ControllerValue(uint8_t MIDIKeyVelocity) {
200            double eg2controllervalue = 0;
201            switch (pRegion->EG2Controller.type) {
202                case ::gig::eg2_ctrl_t::type_none: // no controller defined
203                    eg2controllervalue = 0;
204                    break;
205                case ::gig::eg2_ctrl_t::type_channelaftertouch:
206                    eg2controllervalue = GetGigEngineChannel()->ControllerTable[128];
207                    break;
208                case ::gig::eg2_ctrl_t::type_velocity:
209                    eg2controllervalue = MIDIKeyVelocity;
210                    break;
211                case ::gig::eg2_ctrl_t::type_controlchange: // MIDI control change controller
212                    eg2controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG2Controller.controller_number];
213                    break;
214            }
215            if (pRegion->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue;
216    
217              // calculate resonance          return eg2controllervalue;
218              float resonance = (float) (VCFResonanceCtrl.controller ? VCFResonanceCtrl.value : pDimRgn->VCFResonance) * 0.00787f; // 0.0..1.0      }
219    
220              VCFCutoffCtrl.fvalue    = cutoff - 1.0;      Voice::EGInfo Voice::CalculateEG2ControllerInfluence(double eg2ControllerValue) {
221              VCFResonanceCtrl.fvalue = resonance;          EGInfo eg;
222          }          eg.Attack  = (pRegion->EG2ControllerAttackInfluence)  ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerAttackInfluence)  * eg2ControllerValue : 1.0;
223          else {          eg.Decay   = (pRegion->EG2ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerDecayInfluence)   * eg2ControllerValue : 1.0;
224              VCFCutoffCtrl.controller    = 0;          eg.Release = (pRegion->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerReleaseInfluence) * eg2ControllerValue : 1.0;
             VCFResonanceCtrl.controller = 0;  
         }  
225    
226          return 0; // success          return eg;
227      }      }
228    
229      /**      void Voice::InitLFO1() {
230       *  Renders the audio data for this voice for the current audio fragment.          uint16_t lfo1_internal_depth;
231       *  The sample input data can either come from RAM (cached sample or sample          switch (pRegion->LFO1Controller) {
232       *  part) or directly from disk. The output signal will be rendered by              case ::gig::lfo1_ctrl_internal:
233       *  resampling / interpolation. If this voice is a disk streaming voice and                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
234       *  the voice completely played back the cached RAM part of the sample, it                  pLFO1->ExtController = 0; // no external controller
235       *  will automatically switch to disk playback for the next RenderAudio()                  bLFO1Enabled         = (lfo1_internal_depth > 0);
236       *  call.                  break;
237       *              case ::gig::lfo1_ctrl_modwheel:
238       *  @param Samples - number of samples to be rendered in this audio fragment cycle                  lfo1_internal_depth  = 0;
239       */                  pLFO1->ExtController = 1; // MIDI controller 1
240      void Voice::Render(uint Samples) {                  bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
241                    break;
242          // select default values for synthesis mode bits              case ::gig::lfo1_ctrl_breath:
243          SYNTHESIS_MODE_SET_LOOP(SynthesisMode, false);                  lfo1_internal_depth  = 0;
244                    pLFO1->ExtController = 2; // MIDI controller 2
245          switch (this->PlaybackState) {                  bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
246                    break;
247              case playback_state_init:              case ::gig::lfo1_ctrl_internal_modwheel:
248                  this->PlaybackState = playback_state_ram; // we always start playback from RAM cache and switch then to disk if needed                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
249                  // no break - continue with playback_state_ram                  pLFO1->ExtController = 1; // MIDI controller 1
250                    bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
251              case playback_state_ram: {                  break;
252                      if (RAMLoop) SYNTHESIS_MODE_SET_LOOP(SynthesisMode, true); // enable looping              case ::gig::lfo1_ctrl_internal_breath:
253                    lfo1_internal_depth  = pRegion->LFO1InternalDepth;
254                      // render current fragment                  pLFO1->ExtController = 2; // MIDI controller 2
255                      Synthesize(Samples, (sample_t*) pSample->GetCache().pStart, Delay);                  bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
256                    break;
257                      if (DiskVoice) {              default:
258                          // check if we reached the allowed limit of the sample RAM cache                  lfo1_internal_depth  = 0;
259                          if (finalSynthesisParameters.dPos > MaxRAMPos) {                  pLFO1->ExtController = 0; // no external controller
260                              dmsg(5,("Voice: switching to disk playback (Pos=%f)\n", finalSynthesisParameters.dPos));                  bLFO1Enabled         = false;
261                              this->PlaybackState = playback_state_disk;          }
262                          }          if (bLFO1Enabled) {
263                      } else if (finalSynthesisParameters.dPos >= pSample->GetCache().Size / pSample->FrameSize) {              pLFO1->trigger(pRegion->LFO1Frequency,
264                          this->PlaybackState = playback_state_end;                             start_level_min,
265                      }                             lfo1_internal_depth,
266                  }                             pRegion->LFO1ControlDepth,
267                  break;                             pRegion->LFO1FlipPhase,
268                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
269              case playback_state_disk: {              pLFO1->update(pLFO1->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO1->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, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
                 EG2.update(EGADSR::event_release, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
             } else if (itEvent->Type == Event::type_cancel_release) {  
                 EG1.update(EGADSR::event_cancel_release, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
                 EG2.update(EGADSR::event_cancel_release, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
             }  
270          }          }
271      }      }
272    
273      /**      void Voice::InitLFO2() {
274       * Process given list of MIDI control change and pitch bend events for          uint16_t lfo2_internal_depth;
275       * the given time.          switch (pRegion->LFO2Controller) {
276       *              case ::gig::lfo2_ctrl_internal:
277       * @param itEvent - iterator pointing to the next event to be processed                  lfo2_internal_depth  = pRegion->LFO2InternalDepth;
278       * @param End     - youngest time stamp where processing should be stopped                  pLFO2->ExtController = 0; // no external controller
279       */                  bLFO2Enabled         = (lfo2_internal_depth > 0);
280      void Voice::processCCEvents(RTList<Event>::Iterator& itEvent, uint End) {                  break;
281          for (; itEvent && itEvent->FragmentPos() <= End; ++itEvent) {              case ::gig::lfo2_ctrl_modwheel:
282              if (itEvent->Type == Event::type_control_change &&                  lfo2_internal_depth  = 0;
283                  itEvent->Param.CC.Controller) { // if (valid) MIDI control change event                  pLFO2->ExtController = 1; // MIDI controller 1
284                  if (itEvent->Param.CC.Controller == VCFCutoffCtrl.controller) {                  bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
285                      processCutoffEvent(itEvent);                  break;
286                  }              case ::gig::lfo2_ctrl_foot:
287                  if (itEvent->Param.CC.Controller == VCFResonanceCtrl.controller) {                  lfo2_internal_depth  = 0;
288                      processResonanceEvent(itEvent);                  pLFO2->ExtController = 4; // MIDI controller 4
289                  }                  bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
290                  if (itEvent->Param.CC.Controller == pLFO1->ExtController) {                  break;
291                      pLFO1->update(itEvent->Param.CC.Value);              case ::gig::lfo2_ctrl_internal_modwheel:
292                  }                  lfo2_internal_depth  = pRegion->LFO2InternalDepth;
293                  if (itEvent->Param.CC.Controller == pLFO2->ExtController) {                  pLFO2->ExtController = 1; // MIDI controller 1
294                      pLFO2->update(itEvent->Param.CC.Value);                  bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
295                  }                  break;
296                  if (itEvent->Param.CC.Controller == pLFO3->ExtController) {              case ::gig::lfo2_ctrl_internal_foot:
297                      pLFO3->update(itEvent->Param.CC.Value);                  lfo2_internal_depth  = pRegion->LFO2InternalDepth;
298                  }                  pLFO2->ExtController = 4; // MIDI controller 4
299                  if (pDimRgn->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&                  bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
300                      itEvent->Param.CC.Controller == pDimRgn->AttenuationController.controller_number) {                  break;
301                      processCrossFadeEvent(itEvent);              default:
302                  }                  lfo2_internal_depth  = 0;
303              } else if (itEvent->Type == Event::type_pitchbend) { // if pitch bend event                  pLFO2->ExtController = 0; // no external controller
304                  processPitchEvent(itEvent);                  bLFO2Enabled         = false;
305              }          }
306            if (bLFO2Enabled) {
307                pLFO2->trigger(pRegion->LFO2Frequency,
308                               start_level_max,
309                               lfo2_internal_depth,
310                               pRegion->LFO2ControlDepth,
311                               pRegion->LFO2FlipPhase,
312                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
313                pLFO2->update(pLFO2->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO2->ExtController] : 0);
314          }          }
315      }      }
316    
317      void Voice::processPitchEvent(RTList<Event>::Iterator& itEvent) {      void Voice::InitLFO3() {
318          const float pitch = RTMath::CentsToFreqRatio(((double) itEvent->Param.Pitch.Pitch / 8192.0) * 200.0); // +-two semitones = +-200 cents          uint16_t lfo3_internal_depth;
319          finalSynthesisParameters.fFinalPitch *= pitch;          switch (pRegion->LFO3Controller) {
320          PitchBend = pitch;              case ::gig::lfo3_ctrl_internal:
321      }                  lfo3_internal_depth  = pRegion->LFO3InternalDepth;
322                    pLFO3->ExtController = 0; // no external controller
323      void Voice::processCrossFadeEvent(RTList<Event>::Iterator& itEvent) {                  bLFO3Enabled         = (lfo3_internal_depth > 0);
324          CrossfadeVolume = CrossfadeAttenuation(itEvent->Param.CC.Value);                  break;
325          #if CONFIG_PROCESS_MUTED_CHANNELS              case ::gig::lfo3_ctrl_modwheel:
326          const float effectiveVolume = CrossfadeVolume * Volume * (pEngineChannel->GetMute() ? 0 : pEngineChannel->GlobalVolume);                  lfo3_internal_depth  = 0;
327          #else                  pLFO3->ExtController = 1; // MIDI controller 1
328          const float effectiveVolume = CrossfadeVolume * Volume * pEngineChannel->GlobalVolume;                  bLFO3Enabled         = (pRegion->LFO3ControlDepth > 0);
329          #endif                  break;
330          fFinalVolume = effectiveVolume;              case ::gig::lfo3_ctrl_aftertouch:
331                    lfo3_internal_depth  = 0;
332                    pLFO3->ExtController = 128;
333                    bLFO3Enabled         = true;
334                    break;
335                case ::gig::lfo3_ctrl_internal_modwheel:
336                    lfo3_internal_depth  = pRegion->LFO3InternalDepth;
337                    pLFO3->ExtController = 1; // MIDI controller 1
338                    bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
339                    break;
340                case ::gig::lfo3_ctrl_internal_aftertouch:
341                    lfo3_internal_depth  = pRegion->LFO3InternalDepth;
342                    pLFO3->ExtController = 128;
343                    bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
344                    break;
345                default:
346                    lfo3_internal_depth  = 0;
347                    pLFO3->ExtController = 0; // no external controller
348                    bLFO3Enabled         = false;
349            }
350            if (bLFO3Enabled) {
351                pLFO3->trigger(pRegion->LFO3Frequency,
352                               start_level_mid,
353                               lfo3_internal_depth,
354                               pRegion->LFO3ControlDepth,
355                               false,
356                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
357                pLFO3->update(pLFO3->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO3->ExtController] : 0);
358            }
359      }      }
360    
361      void Voice::processCutoffEvent(RTList<Event>::Iterator& itEvent) {      float Voice::CalculateCutoffBase(uint8_t MIDIKeyVelocity) {
362          int ccvalue = itEvent->Param.CC.Value;          float cutoff = pRegion->GetVelocityCutoff(MIDIKeyVelocity);
363          if (VCFCutoffCtrl.value == ccvalue) return;          if (pRegion->VCFKeyboardTracking) {
364          VCFCutoffCtrl.value == ccvalue;              cutoff *= RTMath::CentsToFreqRatioUnlimited((MIDIKey - pRegion->VCFKeyboardTrackingBreakpoint) * 100);
365          if (pDimRgn->VCFCutoffControllerInvert)  ccvalue = 127 - ccvalue;          }
366          if (ccvalue < pDimRgn->VCFVelocityScale) ccvalue = pDimRgn->VCFVelocityScale;          return cutoff;
367          float cutoff = CutoffBase * float(ccvalue) * 0.00787402f; // (1 / 127)      }
368          if (cutoff > 1.0) cutoff = 1.0;  
369          cutoff = (cutoff < 0.5 ? cutoff * 4826 - 1 : cutoff * 5715 - 449);      float Voice::CalculateFinalCutoff(float cutoffBase) {
370          if (cutoff < 1.0) cutoff = 1.0;          int cvalue;
371            if (VCFCutoffCtrl.controller) {
372                cvalue = GetGigEngineChannel()->ControllerTable[VCFCutoffCtrl.controller];
373                if (pRegion->VCFCutoffControllerInvert) cvalue = 127 - cvalue;
374                // VCFVelocityScale in this case means Minimum cutoff
375                if (cvalue < pRegion->VCFVelocityScale) cvalue = pRegion->VCFVelocityScale;
376            }
377            else {
378                cvalue = pRegion->VCFCutoff;
379            }
380            float fco = cutoffBase * float(cvalue);
381            if (fco > 127.0f) fco = 127.0f;
382    
383          VCFCutoffCtrl.fvalue = cutoff - 1.0; // needed for initialization of fFinalCutoff next time          return fco;
         fFinalCutoff = cutoff;  
384      }      }
385    
386      void Voice::processResonanceEvent(RTList<Event>::Iterator& itEvent) {      uint8_t Voice::GetVCFCutoffCtrl() {
387          // convert absolute controller value to differential          uint8_t ctrl;
388          const int ctrldelta = itEvent->Param.CC.Value - VCFResonanceCtrl.value;          switch (pRegion->VCFCutoffController) {
389          VCFResonanceCtrl.value = itEvent->Param.CC.Value;              case ::gig::vcf_cutoff_ctrl_modwheel:
390          const float resonancedelta = (float) ctrldelta * 0.00787f; // 0.0..1.0                  ctrl = 1;
391          fFinalResonance += resonancedelta;                  break;
392          // needed for initialization of parameter              case ::gig::vcf_cutoff_ctrl_effect1:
393          VCFResonanceCtrl.fvalue = itEvent->Param.CC.Value * 0.00787f;                  ctrl = 12;
394      }                  break;
395                case ::gig::vcf_cutoff_ctrl_effect2:
396      /**                  ctrl = 13;
397       *  Synthesizes the current audio fragment for this voice.                  break;
398       *              case ::gig::vcf_cutoff_ctrl_breath:
399       *  @param Samples - number of sample points to be rendered in this audio                  ctrl = 2;
400       *                   fragment cycle                  break;
401       *  @param pSrc    - pointer to input sample data              case ::gig::vcf_cutoff_ctrl_foot:
402       *  @param Skip    - number of sample points to skip in output buffer                  ctrl = 4;
403       */                  break;
404      void Voice::Synthesize(uint Samples, sample_t* pSrc, uint Skip) {              case ::gig::vcf_cutoff_ctrl_sustainpedal:
405          finalSynthesisParameters.pOutLeft  = &pEngineChannel->pOutputLeft[Skip];                  ctrl = 64;
406          finalSynthesisParameters.pOutRight = &pEngineChannel->pOutputRight[Skip];                  break;
407          finalSynthesisParameters.pSrc      = pSrc;              case ::gig::vcf_cutoff_ctrl_softpedal:
408                    ctrl = 67;
409          RTList<Event>::Iterator itCCEvent = pEngineChannel->pEvents->first();                  break;
410          RTList<Event>::Iterator itNoteEvent = pEngineChannel->pMIDIKeyInfo[MIDIKey].pEvents->first();              case ::gig::vcf_cutoff_ctrl_genpurpose7:
411                    ctrl = 82;
412          if (Skip) { // skip events that happened before this voice was triggered                  break;
413              while (itCCEvent && itCCEvent->FragmentPos() <= Skip) ++itCCEvent;              case ::gig::vcf_cutoff_ctrl_genpurpose8:
414              while (itNoteEvent && itNoteEvent->FragmentPos() <= Skip) ++itNoteEvent;                  ctrl = 83;
415          }                  break;
416                case ::gig::vcf_cutoff_ctrl_aftertouch:
417          uint killPos;                  ctrl = 128;
418          if (itKillEvent) killPos = RTMath::Min(itKillEvent->FragmentPos(), pEngine->MaxFadeOutPos);                  break;
419                case ::gig::vcf_cutoff_ctrl_none:
420          uint i = Skip;              default:
421          while (i < Samples) {                  ctrl = 0;
422              int iSubFragmentEnd = RTMath::Min(i + CONFIG_DEFAULT_SUBFRAGMENT_SIZE, Samples);                  break;
423            }
             // initialize all final synthesis parameters  
             finalSynthesisParameters.fFinalPitch = PitchBase * PitchBend;  
             #if CONFIG_PROCESS_MUTED_CHANNELS  
             fFinalVolume = this->Volume * this->CrossfadeVolume * (pEngineChannel->GetMute() ? 0 : pEngineChannel->GlobalVolume);  
             #else  
             fFinalVolume = this->Volume * this->CrossfadeVolume * pEngineChannel->GlobalVolume;  
             #endif  
             fFinalCutoff    = VCFCutoffCtrl.fvalue;  
             fFinalResonance = VCFResonanceCtrl.fvalue;  
   
             // process MIDI control change and pitchbend events for this subfragment  
             processCCEvents(itCCEvent, iSubFragmentEnd);  
   
             // process transition events (note on, note off & sustain pedal)  
             processTransitionEvents(itNoteEvent, iSubFragmentEnd);  
   
             // if the voice was killed in this subfragment switch EG1 to fade out stage  
             if (itKillEvent && killPos <= iSubFragmentEnd) {  
                 EG1.enterFadeOutStage();  
                 itKillEvent = Pool<Event>::Iterator();  
             }  
   
             // 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 + 1.0, fFinalResonance, pEngine->SampleRate);  
                 finalSynthesisParameters.filterRight.SetParameters(fFinalCutoff + 1.0, fFinalResonance, pEngine->SampleRate);  
             }  
   
             // do we need resampling?  
             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);  
   
             const double newPos = Pos + (iSubFragmentEnd - i) * finalSynthesisParameters.fFinalPitch;  
   
             // increment envelopes' positions  
             if (EG1.active()) {  
   
                 // if sample has a loop and loop start has been reached in this subfragment, send a special event to EG1 to let it finish the attack hold stage  
                 if (pSample->Loops && Pos <= pSample->LoopStart && pSample->LoopStart < newPos) {  
                     EG1.update(EGADSR::event_hold_end, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
                 }  
424    
425                  EG1.increment(1);          return ctrl;
426                  if (!EG1.toStageEndLeft()) EG1.update(EGADSR::event_stage_end, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);      }
             }  
             if (EG2.active()) {  
                 EG2.increment(1);  
                 if (!EG2.toStageEndLeft()) EG2.update(EGADSR::event_stage_end, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
             }  
             EG3.increment(1);  
             if (!EG3.toEndLeft()) EG3.update(); // neutralize envelope coefficient if end reached  
427    
428              Pos = newPos;      uint8_t Voice::GetVCFResonanceCtrl() {
429              i = iSubFragmentEnd;          uint8_t ctrl;
430            switch (pRegion->VCFResonanceController) {
431                case ::gig::vcf_res_ctrl_genpurpose3:
432                    ctrl = 18;
433                    break;
434                case ::gig::vcf_res_ctrl_genpurpose4:
435                    ctrl = 19;
436                    break;
437                case ::gig::vcf_res_ctrl_genpurpose5:
438                    ctrl = 80;
439                    break;
440                case ::gig::vcf_res_ctrl_genpurpose6:
441                    ctrl = 81;
442                    break;
443                case ::gig::vcf_res_ctrl_none:
444                default:
445                    ctrl = 0;
446          }          }
     }  
447    
448      /**          return ctrl;
449       *  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  
450    
451          if (itTriggerEvent && itKillEvent->FragmentPos() <= itTriggerEvent->FragmentPos()) return;      void Voice::TriggerEG1(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
452          this->itKillEvent = itKillEvent;          EG1.trigger(pRegion->EG1PreAttack,
453                        RTMath::Max(pRegion->EG1Attack, 0.0316) * egInfo.Attack,
454                        pRegion->EG1Hold,
455                        pRegion->EG1Decay1 * egInfo.Decay * velrelease,
456                        pRegion->EG1Decay2 * egInfo.Decay * velrelease,
457                        pRegion->EG1InfiniteSustain,
458                        pRegion->EG1Sustain,
459                        RTMath::Max(pRegion->EG1Release * velrelease, 0.014) * egInfo.Release,
460                        velocityAttenuation,
461                        sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
462        }
463    
464        void Voice::TriggerEG2(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
465            EG2.trigger(uint(RgnInfo.EG2PreAttack),
466                        RgnInfo.EG2Attack * egInfo.Attack,
467                        false,
468                        RgnInfo.EG2Decay1 * egInfo.Decay * velrelease,
469                        RgnInfo.EG2Decay2 * egInfo.Decay * velrelease,
470                        RgnInfo.EG2InfiniteSustain,
471                        uint(RgnInfo.EG2Sustain),
472                        RgnInfo.EG2Release * egInfo.Release * velrelease,
473                        velocityAttenuation,
474                        sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
475        }
476    
477        void Voice::ProcessGroupEvent(RTList<Event>::Iterator& itEvent) {
478            dmsg(4,("Voice %x processGroupEvents event type=%d", this, itEvent->Type));
479    
480            // TODO: The SustainPedal condition could be wrong, maybe the
481            // check should be if this Voice is in release stage or is a
482            // release sample instead. Need to test this in GSt.
483            // -- Andreas
484            //
485            // Commented sustain pedal check out. I don't think voices of the same
486            // note should be stopped at all, because it doesn't sound naturally
487            // with a drumkit.
488            // -- Christian, 2013-01-08
489            if (itEvent->Param.Note.Key != MIDIKey /*||
490                !GetGigEngineChannel()->SustainPedal*/) {
491                dmsg(4,("Voice %x - kill", this));
492    
493                // kill the voice fast
494                pEG1->enterFadeOutStage();
495            }
496        }
497    
498        void Voice::CalculateFadeOutCoeff(float FadeOutTime, float SampleRate) {
499            EG1.CalculateFadeOutCoeff(FadeOutTime, SampleRate);
500        }
501    
502        int Voice::CalculatePan(uint8_t pan) {
503            int p;
504            // Gst behaviour: -64 and 63 are special cases
505            if (RgnInfo.Pan == -64)     p = pan * 2 - 127;
506            else if (RgnInfo.Pan == 63) p = pan * 2;
507            else                        p = pan + RgnInfo.Pan;
508    
509            if (p < 0) return 0;
510            if (p > 127) return 127;
511            return p;
512      }      }
513    
514  }} // namespace LinuxSampler::gig  }} // namespace LinuxSampler::gig
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