/[svn]/linuxsampler/trunk/src/engines/gig/Voice.cpp
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revision 783 by persson, Sun Oct 2 14:40:52 2005 UTC revision 2396 by schoenebeck, Tue Jan 8 12:00:45 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 - 2012 Christian Schoenebeck and Grigor Iliev      *
8   *                                                                         *   *                                                                         *
9   *   This program is free software; you can redistribute it and/or modify  *   *   This program is free software; you can redistribute it and/or modify  *
10   *   it under the terms of the GNU General Public License as published by  *   *   it under the terms of the GNU General Public License as published by  *
# Line 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  
177    
178              #ifdef CONFIG_OVERRIDE_RESONANCE_CTRL          return eg1controllervalue;
179              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  
180    
181              #ifndef CONFIG_OVERRIDE_FILTER_TYPE      Voice::EGInfo Voice::CalculateEG1ControllerInfluence(double eg1ControllerValue) {
182              finalSynthesisParameters.filterLeft.SetType(pDimRgn->VCFType);          EGInfo eg;
183              finalSynthesisParameters.filterRight.SetType(pDimRgn->VCFType);          // (eg1attack is different from the others)
184              #else // override filter type          eg.Attack  = (pRegion->EG1ControllerAttackInfluence)  ?
185              FilterLeft.SetType(CONFIG_OVERRIDE_FILTER_TYPE);              1 + 0.031 * (double) (pRegion->EG1ControllerAttackInfluence == 1 ?
186              FilterRight.SetType(CONFIG_OVERRIDE_FILTER_TYPE);                                    1 : 1 << pRegion->EG1ControllerAttackInfluence) * eg1ControllerValue : 1.0;
187              #endif // CONFIG_OVERRIDE_FILTER_TYPE          eg.Decay   = (pRegion->EG1ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerDecayInfluence)   * eg1ControllerValue : 1.0;
188            eg.Release = (pRegion->EG1ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerReleaseInfluence) * eg1ControllerValue : 1.0;
             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;  
189    
190              int cvalue;          return eg;
191              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)  
192    
193              VCFCutoffCtrl.fvalue    = cutoff - CONFIG_FILTER_CUTOFF_MIN;      double Voice::GetEG2ControllerValue(uint8_t MIDIKeyVelocity) {
194              VCFResonanceCtrl.fvalue = resonance;          double eg2controllervalue = 0;
195          }          switch (pRegion->EG2Controller.type) {
196          else {              case ::gig::eg2_ctrl_t::type_none: // no controller defined
197              VCFCutoffCtrl.controller    = 0;                  eg2controllervalue = 0;
198              VCFResonanceCtrl.controller = 0;                  break;
199                case ::gig::eg2_ctrl_t::type_channelaftertouch:
200                    eg2controllervalue = GetGigEngineChannel()->ControllerTable[128];
201                    break;
202                case ::gig::eg2_ctrl_t::type_velocity:
203                    eg2controllervalue = MIDIKeyVelocity;
204                    break;
205                case ::gig::eg2_ctrl_t::type_controlchange: // MIDI control change controller
206                    eg2controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG2Controller.controller_number];
207                    break;
208          }          }
209            if (pRegion->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue;
210    
211          return 0; // success          return eg2controllervalue;
212      }      }
213    
214      /**      Voice::EGInfo Voice::CalculateEG2ControllerInfluence(double eg2ControllerValue) {
215       *  Renders the audio data for this voice for the current audio fragment.          EGInfo eg;
216       *  The sample input data can either come from RAM (cached sample or sample          eg.Attack  = (pRegion->EG2ControllerAttackInfluence)  ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerAttackInfluence)  * eg2ControllerValue : 1.0;
217       *  part) or directly from disk. The output signal will be rendered by          eg.Decay   = (pRegion->EG2ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerDecayInfluence)   * eg2ControllerValue : 1.0;
218       *  resampling / interpolation. If this voice is a disk streaming voice and          eg.Release = (pRegion->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerReleaseInfluence) * eg2ControllerValue : 1.0;
219       *  the voice completely played back the cached RAM part of the sample, it  
220       *  will automatically switch to disk playback for the next RenderAudio()          return eg;
      *  call.  
      *  
      *  @param Samples - number of samples to be rendered in this audio fragment cycle  
      */  
     void Voice::Render(uint Samples) {  
   
         // select default values for synthesis mode bits  
         SYNTHESIS_MODE_SET_LOOP(SynthesisMode, false);  
   
         switch (this->PlaybackState) {  
   
             case playback_state_init:  
                 this->PlaybackState = playback_state_ram; // we always start playback from RAM cache and switch then to disk if needed  
                 // no break - continue with playback_state_ram  
   
             case playback_state_ram: {  
                     if (RAMLoop) SYNTHESIS_MODE_SET_LOOP(SynthesisMode, true); // enable looping  
   
                     // render current fragment  
                     Synthesize(Samples, (sample_t*) pSample->GetCache().pStart, Delay);  
   
                     if (DiskVoice) {  
                         // check if we reached the allowed limit of the sample RAM cache  
                         if (finalSynthesisParameters.dPos > MaxRAMPos) {  
                             dmsg(5,("Voice: switching to disk playback (Pos=%f)\n", finalSynthesisParameters.dPos));  
                             this->PlaybackState = playback_state_disk;  
                         }  
                     } else if (finalSynthesisParameters.dPos >= pSample->GetCache().Size / pSample->FrameSize) {  
                         this->PlaybackState = playback_state_end;  
                     }  
                 }  
                 break;  
   
             case playback_state_disk: {  
                     if (!DiskStreamRef.pStream) {  
                         // check if the disk thread created our ordered disk stream in the meantime  
                         DiskStreamRef.pStream = pDiskThread->AskForCreatedStream(DiskStreamRef.OrderID);  
                         if (!DiskStreamRef.pStream) {  
                             std::cout << stderr << "Disk stream not available in time!" << std::endl << std::flush;  
                             KillImmediately();  
                             return;  
                         }  
                         DiskStreamRef.pStream->IncrementReadPos(pSample->Channels * (int(finalSynthesisParameters.dPos) - MaxRAMPos));  
                         finalSynthesisParameters.dPos -= int(finalSynthesisParameters.dPos);  
                         RealSampleWordsLeftToRead = -1; // -1 means no silence has been added yet  
                     }  
   
                     const int sampleWordsLeftToRead = DiskStreamRef.pStream->GetReadSpace();  
   
                     // add silence sample at the end if we reached the end of the stream (for the interpolator)  
                     if (DiskStreamRef.State == Stream::state_end) {  
                         const int maxSampleWordsPerCycle = (pEngine->MaxSamplesPerCycle << CONFIG_MAX_PITCH) * pSample->Channels + 6; // +6 for the interpolator algorithm  
                         if (sampleWordsLeftToRead <= maxSampleWordsPerCycle) {  
                             // remember how many sample words there are before any silence has been added  
                             if (RealSampleWordsLeftToRead < 0) RealSampleWordsLeftToRead = sampleWordsLeftToRead;  
                             DiskStreamRef.pStream->WriteSilence(maxSampleWordsPerCycle - sampleWordsLeftToRead);  
                         }  
                     }  
   
                     sample_t* ptr = DiskStreamRef.pStream->GetReadPtr(); // get the current read_ptr within the ringbuffer where we read the samples from  
   
                     // render current audio fragment  
                     Synthesize(Samples, ptr, Delay);  
   
                     const int iPos = (int) finalSynthesisParameters.dPos;  
                     const int readSampleWords = iPos * pSample->Channels; // amount of sample words actually been read  
                     DiskStreamRef.pStream->IncrementReadPos(readSampleWords);  
                     finalSynthesisParameters.dPos -= iPos; // just keep fractional part of playback position  
   
                     // change state of voice to 'end' if we really reached the end of the sample data  
                     if (RealSampleWordsLeftToRead >= 0) {  
                         RealSampleWordsLeftToRead -= readSampleWords;  
                         if (RealSampleWordsLeftToRead <= 0) this->PlaybackState = playback_state_end;  
                     }  
                 }  
                 break;  
   
             case playback_state_end:  
                 std::cerr << "gig::Voice::Render(): entered with playback_state_end, this is a bug!\n" << std::flush;  
                 break;  
         }  
   
         // Reset delay  
         Delay = 0;  
   
         itTriggerEvent = Pool<Event>::Iterator();  
   
         // If sample stream or release stage finished, kill the voice  
         if (PlaybackState == playback_state_end || EG1.getSegmentType() == EGADSR::segment_end) KillImmediately();  
     }  
   
     /**  
      *  Resets voice variables. Should only be called if rendering process is  
      *  suspended / not running.  
      */  
     void Voice::Reset() {  
         finalSynthesisParameters.filterLeft.Reset();  
         finalSynthesisParameters.filterRight.Reset();  
         DiskStreamRef.pStream = NULL;  
         DiskStreamRef.hStream = 0;  
         DiskStreamRef.State   = Stream::state_unused;  
         DiskStreamRef.OrderID = 0;  
         PlaybackState = playback_state_end;  
         itTriggerEvent = Pool<Event>::Iterator();  
         itKillEvent    = Pool<Event>::Iterator();  
     }  
   
     /**  
      * Process given list of MIDI note on, note off and sustain pedal events  
      * for the given time.  
      *  
      * @param itEvent - iterator pointing to the next event to be processed  
      * @param End     - youngest time stamp where processing should be stopped  
      */  
     void Voice::processTransitionEvents(RTList<Event>::Iterator& itEvent, uint End) {  
         for (; itEvent && itEvent->FragmentPos() <= End; ++itEvent) {  
             if (itEvent->Type == Event::type_release) {  
                 EG1.update(EGADSR::event_release, 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);  
             }  
         }  
221      }      }
222    
223      /**      void Voice::InitLFO1() {
224       * Process given list of MIDI control change and pitch bend events for          uint16_t lfo1_internal_depth;
225       * the given time.          switch (pRegion->LFO1Controller) {
226       *              case ::gig::lfo1_ctrl_internal:
227       * @param itEvent - iterator pointing to the next event to be processed                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
228       * @param End     - youngest time stamp where processing should be stopped                  pLFO1->ExtController = 0; // no external controller
229       */                  bLFO1Enabled         = (lfo1_internal_depth > 0);
230      void Voice::processCCEvents(RTList<Event>::Iterator& itEvent, uint End) {                  break;
231          for (; itEvent && itEvent->FragmentPos() <= End; ++itEvent) {              case ::gig::lfo1_ctrl_modwheel:
232              if (itEvent->Type == Event::type_control_change &&                  lfo1_internal_depth  = 0;
233                  itEvent->Param.CC.Controller) { // if (valid) MIDI control change event                  pLFO1->ExtController = 1; // MIDI controller 1
234                  if (itEvent->Param.CC.Controller == VCFCutoffCtrl.controller) {                  bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
235                      processCutoffEvent(itEvent);                  break;
236                  }              case ::gig::lfo1_ctrl_breath:
237                  if (itEvent->Param.CC.Controller == VCFResonanceCtrl.controller) {                  lfo1_internal_depth  = 0;
238                      processResonanceEvent(itEvent);                  pLFO1->ExtController = 2; // MIDI controller 2
239                  }                  bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
240                  if (itEvent->Param.CC.Controller == pLFO1->ExtController) {                  break;
241                      pLFO1->update(itEvent->Param.CC.Value);              case ::gig::lfo1_ctrl_internal_modwheel:
242                  }                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
243                  if (itEvent->Param.CC.Controller == pLFO2->ExtController) {                  pLFO1->ExtController = 1; // MIDI controller 1
244                      pLFO2->update(itEvent->Param.CC.Value);                  bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
245                  }                  break;
246                  if (itEvent->Param.CC.Controller == pLFO3->ExtController) {              case ::gig::lfo1_ctrl_internal_breath:
247                      pLFO3->update(itEvent->Param.CC.Value);                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
248                  }                  pLFO1->ExtController = 2; // MIDI controller 2
249                  if (pDimRgn->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&                  bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
250                      itEvent->Param.CC.Controller == pDimRgn->AttenuationController.controller_number) {                  break;
251                      processCrossFadeEvent(itEvent);              default:
252                  }                  lfo1_internal_depth  = 0;
253              } else if (itEvent->Type == Event::type_pitchbend) { // if pitch bend event                  pLFO1->ExtController = 0; // no external controller
254                  processPitchEvent(itEvent);                  bLFO1Enabled         = false;
255              }          }
256            if (bLFO1Enabled) {
257                pLFO1->trigger(pRegion->LFO1Frequency,
258                               start_level_min,
259                               lfo1_internal_depth,
260                               pRegion->LFO1ControlDepth,
261                               pRegion->LFO1FlipPhase,
262                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
263                pLFO1->update(pLFO1->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO1->ExtController] : 0);
264          }          }
265      }      }
266    
267      void Voice::processPitchEvent(RTList<Event>::Iterator& itEvent) {      void Voice::InitLFO2() {
268          const float pitch = RTMath::CentsToFreqRatio(((double) itEvent->Param.Pitch.Pitch / 8192.0) * 200.0); // +-two semitones = +-200 cents          uint16_t lfo2_internal_depth;
269          finalSynthesisParameters.fFinalPitch *= pitch;          switch (pRegion->LFO2Controller) {
270          PitchBend = pitch;              case ::gig::lfo2_ctrl_internal:
271      }                  lfo2_internal_depth  = pRegion->LFO2InternalDepth;
272                    pLFO2->ExtController = 0; // no external controller
273      void Voice::processCrossFadeEvent(RTList<Event>::Iterator& itEvent) {                  bLFO2Enabled         = (lfo2_internal_depth > 0);
274          CrossfadeVolume = CrossfadeAttenuation(itEvent->Param.CC.Value);                  break;
275          #if CONFIG_PROCESS_MUTED_CHANNELS              case ::gig::lfo2_ctrl_modwheel:
276          const float effectiveVolume = CrossfadeVolume * Volume * (pEngineChannel->GetMute() ? 0 : pEngineChannel->GlobalVolume);                  lfo2_internal_depth  = 0;
277          #else                  pLFO2->ExtController = 1; // MIDI controller 1
278          const float effectiveVolume = CrossfadeVolume * Volume * pEngineChannel->GlobalVolume;                  bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
279          #endif                  break;
280          fFinalVolume = effectiveVolume;              case ::gig::lfo2_ctrl_foot:
281                    lfo2_internal_depth  = 0;
282                    pLFO2->ExtController = 4; // MIDI controller 4
283                    bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
284                    break;
285                case ::gig::lfo2_ctrl_internal_modwheel:
286                    lfo2_internal_depth  = pRegion->LFO2InternalDepth;
287                    pLFO2->ExtController = 1; // MIDI controller 1
288                    bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
289                    break;
290                case ::gig::lfo2_ctrl_internal_foot:
291                    lfo2_internal_depth  = pRegion->LFO2InternalDepth;
292                    pLFO2->ExtController = 4; // MIDI controller 4
293                    bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
294                    break;
295                default:
296                    lfo2_internal_depth  = 0;
297                    pLFO2->ExtController = 0; // no external controller
298                    bLFO2Enabled         = false;
299            }
300            if (bLFO2Enabled) {
301                pLFO2->trigger(pRegion->LFO2Frequency,
302                               start_level_max,
303                               lfo2_internal_depth,
304                               pRegion->LFO2ControlDepth,
305                               pRegion->LFO2FlipPhase,
306                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
307                pLFO2->update(pLFO2->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO2->ExtController] : 0);
308            }
309      }      }
310    
311      void Voice::processCutoffEvent(RTList<Event>::Iterator& itEvent) {      void Voice::InitLFO3() {
312          int ccvalue = itEvent->Param.CC.Value;          uint16_t lfo3_internal_depth;
313          if (VCFCutoffCtrl.value == ccvalue) return;          switch (pRegion->LFO3Controller) {
314          VCFCutoffCtrl.value == ccvalue;              case ::gig::lfo3_ctrl_internal:
315          if (pDimRgn->VCFCutoffControllerInvert)  ccvalue = 127 - ccvalue;                  lfo3_internal_depth  = pRegion->LFO3InternalDepth;
316          if (ccvalue < pDimRgn->VCFVelocityScale) ccvalue = pDimRgn->VCFVelocityScale;                  pLFO3->ExtController = 0; // no external controller
317          float cutoff = CutoffBase * float(ccvalue) * 0.00787402f; // (1 / 127)                  bLFO3Enabled         = (lfo3_internal_depth > 0);
318          if (cutoff > 1.0) cutoff = 1.0;                  break;
319          cutoff = exp(cutoff * FILTER_CUTOFF_COEFF) * CONFIG_FILTER_CUTOFF_MIN - CONFIG_FILTER_CUTOFF_MIN;              case ::gig::lfo3_ctrl_modwheel:
320          VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of fFinalCutoff next time                  lfo3_internal_depth  = 0;
321          fFinalCutoff = cutoff;                  pLFO3->ExtController = 1; // MIDI controller 1
322                    bLFO3Enabled         = (pRegion->LFO3ControlDepth > 0);
323                    break;
324                case ::gig::lfo3_ctrl_aftertouch:
325                    lfo3_internal_depth  = 0;
326                    pLFO3->ExtController = 128;
327                    bLFO3Enabled         = true;
328                    break;
329                case ::gig::lfo3_ctrl_internal_modwheel:
330                    lfo3_internal_depth  = pRegion->LFO3InternalDepth;
331                    pLFO3->ExtController = 1; // MIDI controller 1
332                    bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
333                    break;
334                case ::gig::lfo3_ctrl_internal_aftertouch:
335                    lfo3_internal_depth  = pRegion->LFO3InternalDepth;
336                    pLFO3->ExtController = 128;
337                    bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
338                    break;
339                default:
340                    lfo3_internal_depth  = 0;
341                    pLFO3->ExtController = 0; // no external controller
342                    bLFO3Enabled         = false;
343            }
344            if (bLFO3Enabled) {
345                pLFO3->trigger(pRegion->LFO3Frequency,
346                               start_level_mid,
347                               lfo3_internal_depth,
348                               pRegion->LFO3ControlDepth,
349                               false,
350                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
351                pLFO3->update(pLFO3->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO3->ExtController] : 0);
352            }
353      }      }
354    
355      void Voice::processResonanceEvent(RTList<Event>::Iterator& itEvent) {      float Voice::CalculateCutoffBase(uint8_t MIDIKeyVelocity) {
356          // convert absolute controller value to differential          float cutoff = pRegion->GetVelocityCutoff(MIDIKeyVelocity);
357          const int ctrldelta = itEvent->Param.CC.Value - VCFResonanceCtrl.value;          if (pRegion->VCFKeyboardTracking) {
358          VCFResonanceCtrl.value = itEvent->Param.CC.Value;              cutoff *= RTMath::CentsToFreqRatioUnlimited((MIDIKey - pRegion->VCFKeyboardTrackingBreakpoint) * 100);
359          const float resonancedelta = (float) ctrldelta * 0.00787f; // 0.0..1.0          }
360          fFinalResonance += resonancedelta;          return cutoff;
361          // needed for initialization of parameter      }
362          VCFResonanceCtrl.fvalue = itEvent->Param.CC.Value * 0.00787f;  
363      }      float Voice::CalculateFinalCutoff(float cutoffBase) {
364            int cvalue;
365      /**          if (VCFCutoffCtrl.controller) {
366       *  Synthesizes the current audio fragment for this voice.              cvalue = GetGigEngineChannel()->ControllerTable[VCFCutoffCtrl.controller];
367       *              if (pRegion->VCFCutoffControllerInvert) cvalue = 127 - cvalue;
368       *  @param Samples - number of sample points to be rendered in this audio              // VCFVelocityScale in this case means Minimum cutoff
369       *                   fragment cycle              if (cvalue < pRegion->VCFVelocityScale) cvalue = pRegion->VCFVelocityScale;
370       *  @param pSrc    - pointer to input sample data          }
371       *  @param Skip    - number of sample points to skip in output buffer          else {
372       */              cvalue = pRegion->VCFCutoff;
373      void Voice::Synthesize(uint Samples, sample_t* pSrc, uint Skip) {          }
374          finalSynthesisParameters.pOutLeft  = &pEngineChannel->pOutputLeft[Skip];          float fco = cutoffBase * float(cvalue);
375          finalSynthesisParameters.pOutRight = &pEngineChannel->pOutputRight[Skip];          if (fco > 127.0f) fco = 127.0f;
         finalSynthesisParameters.pSrc      = pSrc;  
   
         RTList<Event>::Iterator itCCEvent = pEngineChannel->pEvents->first();  
         RTList<Event>::Iterator itNoteEvent = pEngineChannel->pMIDIKeyInfo[MIDIKey].pEvents->first();  
   
         if (Skip) { // skip events that happened before this voice was triggered  
             while (itCCEvent && itCCEvent->FragmentPos() <= Skip) ++itCCEvent;  
             while (itNoteEvent && itNoteEvent->FragmentPos() <= Skip) ++itNoteEvent;  
         }  
   
         uint i = Skip;  
         while (i < Samples) {  
             int iSubFragmentEnd = RTMath::Min(i + CONFIG_DEFAULT_SUBFRAGMENT_SIZE, Samples);  
   
             // initialize all final synthesis parameters  
             finalSynthesisParameters.fFinalPitch = PitchBase * PitchBend;  
             #if CONFIG_PROCESS_MUTED_CHANNELS  
             fFinalVolume = this->Volume * this->CrossfadeVolume * (pEngineChannel->GetMute() ? 0 : pEngineChannel->GlobalVolume);  
             #else  
             fFinalVolume = this->Volume * this->CrossfadeVolume * pEngineChannel->GlobalVolume;  
             #endif  
             fFinalCutoff    = VCFCutoffCtrl.fvalue;  
             fFinalResonance = VCFResonanceCtrl.fvalue;  
   
             // process MIDI control change and pitchbend events for this subfragment  
             processCCEvents(itCCEvent, iSubFragmentEnd);  
   
             // process transition events (note on, note off & sustain pedal)  
             processTransitionEvents(itNoteEvent, iSubFragmentEnd);  
   
             // process envelope generators  
             switch (EG1.getSegmentType()) {  
                 case EGADSR::segment_lin:  
                     fFinalVolume *= EG1.processLin();  
                     break;  
                 case EGADSR::segment_exp:  
                     fFinalVolume *= EG1.processExp();  
                     break;  
                 case EGADSR::segment_end:  
                     fFinalVolume *= EG1.getLevel();  
                     break; // noop  
             }  
             switch (EG2.getSegmentType()) {  
                 case EGADSR::segment_lin:  
                     fFinalCutoff *= EG2.processLin();  
                     break;  
                 case EGADSR::segment_exp:  
                     fFinalCutoff *= EG2.processExp();  
                     break;  
                 case EGADSR::segment_end:  
                     fFinalCutoff *= EG2.getLevel();  
                     break; // noop  
             }  
             if (EG3.active()) finalSynthesisParameters.fFinalPitch *= RTMath::CentsToFreqRatio(EG3.render());  
376    
377              // process low frequency oscillators          return fco;
378              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);  
             }  
379    
380              // do we need resampling?      uint8_t Voice::GetVCFCutoffCtrl() {
381              const float __PLUS_ONE_CENT  = 1.000577789506554859250142541782224725466f;          uint8_t ctrl;
382              const float __MINUS_ONE_CENT = 0.9994225441413807496009516495583113737666f;          switch (pRegion->VCFCutoffController) {
383              const bool bResamplingRequired = !(finalSynthesisParameters.fFinalPitch <= __PLUS_ONE_CENT &&              case ::gig::vcf_cutoff_ctrl_modwheel:
384                                                 finalSynthesisParameters.fFinalPitch >= __MINUS_ONE_CENT);                  ctrl = 1;
385              SYNTHESIS_MODE_SET_INTERPOLATE(SynthesisMode, bResamplingRequired);                  break;
386                case ::gig::vcf_cutoff_ctrl_effect1:
387              // prepare final synthesis parameters structure                  ctrl = 12;
388              finalSynthesisParameters.fFinalVolumeLeft  = fFinalVolume * PanLeft;                  break;
389              finalSynthesisParameters.fFinalVolumeRight = fFinalVolume * PanRight;              case ::gig::vcf_cutoff_ctrl_effect2:
390              finalSynthesisParameters.uiToGo            = iSubFragmentEnd - i;                  ctrl = 13;
391                    break;
392              // render audio for one subfragment              case ::gig::vcf_cutoff_ctrl_breath:
393              RunSynthesisFunction(SynthesisMode, &finalSynthesisParameters, &loop);                  ctrl = 2;
394                    break;
395              const double newPos = Pos + (iSubFragmentEnd - i) * finalSynthesisParameters.fFinalPitch;              case ::gig::vcf_cutoff_ctrl_foot:
396                    ctrl = 4;
397              // increment envelopes' positions                  break;
398              if (EG1.active()) {              case ::gig::vcf_cutoff_ctrl_sustainpedal:
399                    ctrl = 64;
400                  // 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                  break;
401                  if (pSample->Loops && Pos <= pSample->LoopStart && pSample->LoopStart < newPos) {              case ::gig::vcf_cutoff_ctrl_softpedal:
402                      EG1.update(EGADSR::event_hold_end, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);                  ctrl = 67;
403                  }                  break;
404                case ::gig::vcf_cutoff_ctrl_genpurpose7:
405                    ctrl = 82;
406                    break;
407                case ::gig::vcf_cutoff_ctrl_genpurpose8:
408                    ctrl = 83;
409                    break;
410                case ::gig::vcf_cutoff_ctrl_aftertouch:
411                    ctrl = 128;
412                    break;
413                case ::gig::vcf_cutoff_ctrl_none:
414                default:
415                    ctrl = 0;
416                    break;
417            }
418    
419                  EG1.increment(1);          return ctrl;
420                  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  
421    
422              Pos = newPos;      uint8_t Voice::GetVCFResonanceCtrl() {
423              i = iSubFragmentEnd;          uint8_t ctrl;
424            switch (pRegion->VCFResonanceController) {
425                case ::gig::vcf_res_ctrl_genpurpose3:
426                    ctrl = 18;
427                    break;
428                case ::gig::vcf_res_ctrl_genpurpose4:
429                    ctrl = 19;
430                    break;
431                case ::gig::vcf_res_ctrl_genpurpose5:
432                    ctrl = 80;
433                    break;
434                case ::gig::vcf_res_ctrl_genpurpose6:
435                    ctrl = 81;
436                    break;
437                case ::gig::vcf_res_ctrl_none:
438                default:
439                    ctrl = 0;
440          }          }
     }  
441    
442      /**          return ctrl;
443       *  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  
444    
445          if (itTriggerEvent && itKillEvent->FragmentPos() <= itTriggerEvent->FragmentPos()) return;      void Voice::TriggerEG1(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
446          this->itKillEvent = itKillEvent;          EG1.trigger(pRegion->EG1PreAttack,
447                        pRegion->EG1Attack * egInfo.Attack,
448                        pRegion->EG1Hold,
449                        pRegion->EG1Decay1 * egInfo.Decay * velrelease,
450                        pRegion->EG1Decay2 * egInfo.Decay * velrelease,
451                        pRegion->EG1InfiniteSustain,
452                        pRegion->EG1Sustain,
453                        pRegion->EG1Release * egInfo.Release * velrelease,
454                        velocityAttenuation,
455                        sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
456        }
457    
458        void Voice::TriggerEG2(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
459            EG2.trigger(uint(RgnInfo.EG2PreAttack),
460                        RgnInfo.EG2Attack * egInfo.Attack,
461                        false,
462                        RgnInfo.EG2Decay1 * egInfo.Decay * velrelease,
463                        RgnInfo.EG2Decay2 * egInfo.Decay * velrelease,
464                        RgnInfo.EG2InfiniteSustain,
465                        uint(RgnInfo.EG2Sustain),
466                        RgnInfo.EG2Release * egInfo.Release * velrelease,
467                        velocityAttenuation,
468                        sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
469        }
470    
471        void Voice::ProcessGroupEvent(RTList<Event>::Iterator& itEvent) {
472            dmsg(4,("Voice %x processGroupEvents event type=%d", this, itEvent->Type));
473    
474            // TODO: The SustainPedal condition could be wrong, maybe the
475            // check should be if this Voice is in release stage or is a
476            // release sample instead. Need to test this in GSt.
477            // -- Andreas
478            //
479            // Commented sustain pedal check out. I don't think voices of the same
480            // note should be stopped at all, because it doesn't sound naturally
481            // with a drumkit.
482            // -- Christian, 2013-01-08
483            if (itEvent->Param.Note.Key != MIDIKey /*||
484                !GetGigEngineChannel()->SustainPedal*/) {
485                dmsg(4,("Voice %x - kill", this));
486    
487                // kill the voice fast
488                pEG1->enterFadeOutStage();
489            }
490        }
491    
492        void Voice::CalculateFadeOutCoeff(float FadeOutTime, float SampleRate) {
493            EG1.CalculateFadeOutCoeff(FadeOutTime, SampleRate);
494        }
495    
496        int Voice::CalculatePan(uint8_t pan) {
497            int p;
498            // Gst behaviour: -64 and 63 are special cases
499            if (RgnInfo.Pan == -64)     p = pan * 2 - 127;
500            else if (RgnInfo.Pan == 63) p = pan * 2;
501            else                        p = pan + RgnInfo.Pan;
502    
503            if (p < 0) return 0;
504            if (p > 127) return 127;
505            return p;
506      }      }
507    
508  }} // namespace LinuxSampler::gig  }} // namespace LinuxSampler::gig
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