/[svn]/linuxsampler/trunk/src/engines/gig/Voice.cpp
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Diff of /linuxsampler/trunk/src/engines/gig/Voice.cpp

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revision 1748 by persson, Sun Jun 22 14:46:46 2008 UTC revision 2327 by persson, Sat Mar 10 16:16:14 2012 UTC
# Line 3  Line 3 
3   *   LinuxSampler - modular, streaming capable sampler                     *   *   LinuxSampler - modular, streaming capable sampler                     *
4   *                                                                         *   *                                                                         *
5   *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *   *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *
6   *   Copyright (C) 2005 - 2007 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    
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 (asm core is not supported ATM)  
         #if 0 // 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);
46          this->pDiskThread = pEngine->pDiskThread;      }
47    
48        void Voice::SetEngine(LinuxSampler::Engine* pEngine) {
49            Engine* engine = static_cast<Engine*>(pEngine);
50            this->pEngine     = engine;
51            this->pDiskThread = engine->pDiskThread;
52          dmsg(6,("Voice::SetEngine()\n"));          dmsg(6,("Voice::SetEngine()\n"));
53      }      }
54    
55      /**      Voice::SampleInfo Voice::GetSampleInfo() {
56       *  Initializes and triggers the voice, a disk stream will be launched if          SampleInfo si;
57       *  needed.          si.SampleRate       = pSample->SamplesPerSecond;
58       *          si.ChannelCount     = pSample->Channels;
59       *  @param pEngineChannel - engine channel on which this voice was ordered          si.FrameSize        = pSample->FrameSize;
60       *  @param itNoteOnEvent  - event that caused triggering of this voice          si.BitDepth         = pSample->BitDepth;
61       *  @param PitchBend      - MIDI detune factor (-8192 ... +8191)          si.TotalFrameCount  = pSample->SamplesTotal;
62       *  @param pDimRgn        - points to the dimension region which provides sample wave(s) and articulation data  
63       *  @param VoiceType      - type of this voice          si.HasLoops       = pRegion->SampleLoops;
64       *  @param iKeyGroup      - a value > 0 defines a key group in which this voice is member of          si.LoopStart      = (si.HasLoops) ? pRegion->pSampleLoops[0].LoopStart  : 0;
65       *  @returns 0 on success, a value < 0 if the voice wasn't triggered          si.LoopLength     = (si.HasLoops) ? pRegion->pSampleLoops[0].LoopLength : 0;
66       *           (either due to an error or e.g. because no region is          si.LoopPlayCount  = pSample->LoopPlayCount;
67       *           defined for the given key)          si.Unpitched      = !pRegion->PitchTrack;
68       */  
69      int Voice::Trigger(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent, int PitchBend, ::gig::DimensionRegion* pDimRgn, type_t VoiceType, int iKeyGroup) {          return si;
70          this->pEngineChannel = pEngineChannel;      }
71          this->pDimRgn        = pDimRgn;  
72          Orphan = false;      Voice::RegionInfo Voice::GetRegionInfo() {
73            RegionInfo ri;
74          #if CONFIG_DEVMODE          ri.UnityNote = pRegion->UnityNote;
75          if (itNoteOnEvent->FragmentPos() > pEngine->MaxSamplesPerCycle) { // just a sanity check for debugging          ri.FineTune  = pRegion->FineTune;
76              dmsg(1,("Voice::Trigger(): ERROR, TriggerDelay > Totalsamples\n"));          ri.Pan       = pRegion->Pan;
77          }          ri.SampleStartOffset = pRegion->SampleStartOffset;
78          #endif // CONFIG_DEVMODE  
79            ri.EG2PreAttack        = pRegion->EG2PreAttack;
80          Type            = VoiceType;          ri.EG2Attack           = pRegion->EG2Attack;
81          MIDIKey         = itNoteOnEvent->Param.Note.Key;          ri.EG2Decay1           = pRegion->EG2Decay1;
82          PlaybackState   = playback_state_init; // mark voice as triggered, but no audio rendered yet          ri.EG2Decay2           = pRegion->EG2Decay2;
83          Delay           = itNoteOnEvent->FragmentPos();          ri.EG2Sustain          = pRegion->EG2Sustain;
84          itTriggerEvent  = itNoteOnEvent;          ri.EG2InfiniteSustain  = pRegion->EG2InfiniteSustain;
85          itKillEvent     = Pool<Event>::Iterator();          ri.EG2Release          = pRegion->EG2Release;
86          KeyGroup        = iKeyGroup;  
87          pSample         = pDimRgn->pSample; // sample won't change until the voice is finished          ri.EG3Attack     = pRegion->EG3Attack;
88            ri.EG3Depth      = pRegion->EG3Depth;
89          // calculate volume          ri.VCFEnabled    = pRegion->VCFEnabled;
90          const double velocityAttenuation = pDimRgn->GetVelocityAttenuation(itNoteOnEvent->Param.Note.Velocity);          ri.VCFType       = Filter::vcf_type_t(pRegion->VCFType);
91            ri.VCFResonance  = pRegion->VCFResonance;
92          // For 16 bit samples, we downscale by 32768 to convert from  
93          // int16 value range to DSP value range (which is          ri.ReleaseTriggerDecay = 0.01053 * (256 >> pRegion->ReleaseTriggerDecay);
94          // -1.0..1.0). For 24 bit, we downscale from int32.  
95          float volume = velocityAttenuation / (pSample->BitDepth == 16 ? 32768.0f : 32768.0f * 65536.0f);          return ri;
96        }
97          volume *= pDimRgn->SampleAttenuation * pEngineChannel->GlobalVolume * GLOBAL_VOLUME;  
98        Voice::InstrumentInfo Voice::GetInstrumentInfo() {
99          // the volume of release triggered samples depends on note length          InstrumentInfo ii;
100          if (Type == type_release_trigger) {          ii.FineTune = GetGigEngineChannel()->pInstrument->FineTune;
101              float noteLength = float(pEngine->FrameTime + Delay -          ii.PitchbendRange = GetGigEngineChannel()->pInstrument->PitchbendRange;
102                                       pEngineChannel->pMIDIKeyInfo[MIDIKey].NoteOnTime) / pEngine->SampleRate;  
103              float attenuation = 1 - 0.01053 * (256 >> pDimRgn->ReleaseTriggerDecay) * noteLength;          return ii;
104              if (attenuation <= 0) return -1;      }
105              volume *= attenuation;  
106          }      double Voice::GetSampleAttenuation() {
107            return pRegion->SampleAttenuation;
108          // select channel mode (mono or stereo)      }
         SYNTHESIS_MODE_SET_CHANNELS(SynthesisMode, pSample->Channels == 2);  
         // select bit depth (16 or 24)  
         SYNTHESIS_MODE_SET_BITDEPTH24(SynthesisMode, pSample->BitDepth == 24);  
109    
110          // get starting crossfade volume level      double Voice::GetVelocityAttenuation(uint8_t MIDIKeyVelocity) {
111            return pRegion->GetVelocityAttenuation(MIDIKeyVelocity);
112        }
113    
114        double Voice::GetVelocityRelease(uint8_t MIDIKeyVelocity) {
115            return pRegion->GetVelocityRelease(MIDIKeyVelocity);
116        }
117    
118        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                if (pRegion->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&
121                    itEvent->Param.CC.Controller == pRegion->AttenuationController.controller_number) {
122                    CrossfadeSmoother.update(AbstractEngine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.CC.Value)]);
123                }
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            VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of fFinalCutoff next time
137            fFinalCutoff = cutoff;
138        }
139    
140        double Voice::CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity) {
141          float crossfadeVolume;          float crossfadeVolume;
142          switch (pDimRgn->AttenuationController.type) {          switch (pRegion->AttenuationController.type) {
143              case ::gig::attenuation_ctrl_t::type_channelaftertouch:              case ::gig::attenuation_ctrl_t::type_channelaftertouch:
144                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(pEngineChannel->ControllerTable[128])];                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[128])];
145                  break;                  break;
146              case ::gig::attenuation_ctrl_t::type_velocity:              case ::gig::attenuation_ctrl_t::type_velocity:
147                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(itNoteOnEvent->Param.Note.Velocity)];                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(MIDIKeyVelocity)];
148                  break;                  break;
149              case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate              case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate
150                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(pEngineChannel->ControllerTable[pDimRgn->AttenuationController.controller_number])];                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[pRegion->AttenuationController.controller_number])];
151                  break;                  break;
152              case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined              case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined
153              default:              default:
154                  crossfadeVolume = 1.0f;                  crossfadeVolume = 1.0f;
155          }          }
156    
157          VolumeLeft  = volume * Engine::PanCurve[64 - pDimRgn->Pan];          return crossfadeVolume;
158          VolumeRight = volume * Engine::PanCurve[64 + pDimRgn->Pan];      }
   
         float subfragmentRate = pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE;  
         CrossfadeSmoother.trigger(crossfadeVolume, subfragmentRate);  
         VolumeSmoother.trigger(pEngineChannel->MidiVolume, subfragmentRate);  
         PanLeftSmoother.trigger(pEngineChannel->GlobalPanLeft, subfragmentRate);  
         PanRightSmoother.trigger(pEngineChannel->GlobalPanRight, subfragmentRate);  
   
         finalSynthesisParameters.dPos = pDimRgn->SampleStartOffset; // offset where we should start playback of sample (0 - 2000 sample points)  
         Pos = pDimRgn->SampleStartOffset;  
   
         // Check if the sample needs disk streaming or is too short for that  
         long cachedsamples = pSample->GetCache().Size / pSample->FrameSize;  
         DiskVoice          = cachedsamples < pSample->SamplesTotal;  
   
         const DLS::sample_loop_t& loopinfo = pDimRgn->pSampleLoops[0];  
   
         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  
             RAMLoop = (pDimRgn->SampleLoops && (loopinfo.LoopStart + loopinfo.LoopLength) <= MaxRAMPos);  
   
             if (pDiskThread->OrderNewStream(&DiskStreamRef, pDimRgn, MaxRAMPos, !RAMLoop) < 0) {  
                 dmsg(1,("Disk stream order failed!\n"));  
                 KillImmediately();  
                 return -1;  
             }  
             dmsg(4,("Disk voice launched (cached samples: %d, total Samples: %d, MaxRAMPos: %d, RAMLooping: %s)\n", cachedsamples, pSample->SamplesTotal, MaxRAMPos, (RAMLoop) ? "yes" : "no"));  
         }  
         else { // RAM only voice  
             MaxRAMPos = cachedsamples;  
             RAMLoop = (pDimRgn->SampleLoops != 0);  
             dmsg(4,("RAM only voice launched (Looping: %s)\n", (RAMLoop) ? "yes" : "no"));  
         }  
         if (RAMLoop) {  
             loop.uiTotalCycles = pSample->LoopPlayCount;  
             loop.uiCyclesLeft  = pSample->LoopPlayCount;  
             loop.uiStart       = loopinfo.LoopStart;  
             loop.uiEnd         = loopinfo.LoopStart + loopinfo.LoopLength;  
             loop.uiSize        = loopinfo.LoopLength;  
         }  
   
         // calculate initial pitch value  
         {  
             double pitchbasecents = pDimRgn->FineTune + (int) pEngine->ScaleTuning[MIDIKey % 12];  
   
             // GSt behaviour: maximum transpose up is 40 semitones. If  
             // MIDI key is more than 40 semitones above unity note,  
             // the transpose is not done.  
             if (pDimRgn->PitchTrack && (MIDIKey - (int) pDimRgn->UnityNote) < 40) pitchbasecents += (MIDIKey - (int) pDimRgn->UnityNote) * 100;  
   
             this->PitchBase = RTMath::CentsToFreqRatio(pitchbasecents) * (double(pSample->SamplesPerSecond) / double(pEngine->SampleRate));  
             this->PitchBend = RTMath::CentsToFreqRatio(((double) PitchBend / 8192.0) * 200.0); // pitchbend wheel +-2 semitones = 200 cents  
         }  
   
         // the length of the decay and release curves are dependent on the velocity  
         const double velrelease = 1 / pDimRgn->GetVelocityRelease(itNoteOnEvent->Param.Note.Velocity);  
   
         // setup EG 1 (VCA EG)  
         {  
             // get current value of EG1 controller  
             double eg1controllervalue;  
             switch (pDimRgn->EG1Controller.type) {  
                 case ::gig::eg1_ctrl_t::type_none: // no controller defined  
                     eg1controllervalue = 0;  
                     break;  
                 case ::gig::eg1_ctrl_t::type_channelaftertouch:  
                     eg1controllervalue = pEngineChannel->ControllerTable[128];  
                     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;  
   
             // calculate influence of EG1 controller on EG1's parameters  
             // (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);  
         }  
   
 #ifdef CONFIG_INTERPOLATE_VOLUME  
         // setup initial volume in synthesis parameters  
 #ifdef CONFIG_PROCESS_MUTED_CHANNELS  
         if (pEngineChannel->GetMute()) {  
             finalSynthesisParameters.fFinalVolumeLeft  = 0;  
             finalSynthesisParameters.fFinalVolumeRight = 0;  
         }  
         else  
 #else  
         {  
             float finalVolume = pEngineChannel->MidiVolume * crossfadeVolume * EG1.getLevel();  
   
             finalSynthesisParameters.fFinalVolumeLeft  = finalVolume * VolumeLeft  * pEngineChannel->GlobalPanLeft;  
             finalSynthesisParameters.fFinalVolumeRight = finalVolume * VolumeRight * pEngineChannel->GlobalPanRight;  
         }  
 #endif  
 #endif  
   
         // setup EG 2 (VCF Cutoff EG)  
         {  
             // get current value of EG2 controller  
             double eg2controllervalue;  
             switch (pDimRgn->EG2Controller.type) {  
                 case ::gig::eg2_ctrl_t::type_none: // no controller defined  
                     eg2controllervalue = 0;  
                     break;  
                 case ::gig::eg2_ctrl_t::type_channelaftertouch:  
                     eg2controllervalue = pEngineChannel->ControllerTable[128];  
                     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;  
159    
160              // calculate influence of EG2 controller on EG2's parameters      double Voice::GetEG1ControllerValue(uint8_t MIDIKeyVelocity) {
161              double eg2attack  = (pDimRgn->EG2ControllerAttackInfluence)  ? 1 + 0.00775 * (double) (1 << pDimRgn->EG2ControllerAttackInfluence)  * eg2controllervalue : 1.0;          double eg1controllervalue = 0;
162              double eg2decay   = (pDimRgn->EG2ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pDimRgn->EG2ControllerDecayInfluence)   * eg2controllervalue : 1.0;          switch (pRegion->EG1Controller.type) {
163              double eg2release = (pDimRgn->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pDimRgn->EG2ControllerReleaseInfluence) * eg2controllervalue : 1.0;              case ::gig::eg1_ctrl_t::type_none: // no controller defined
164                    eg1controllervalue = 0;
165              EG2.trigger(pDimRgn->EG2PreAttack,                  break;
166                          pDimRgn->EG2Attack * eg2attack,              case ::gig::eg1_ctrl_t::type_channelaftertouch:
167                          false,                  eg1controllervalue = GetGigEngineChannel()->ControllerTable[128];
168                          pDimRgn->EG2Decay1 * eg2decay * velrelease,                  break;
169                          pDimRgn->EG2Decay2 * eg2decay * velrelease,              case ::gig::eg1_ctrl_t::type_velocity:
170                          pDimRgn->EG2InfiniteSustain,                  eg1controllervalue = MIDIKeyVelocity;
171                          pDimRgn->EG2Sustain,                  break;
172                          pDimRgn->EG2Release * eg2release * velrelease,              case ::gig::eg1_ctrl_t::type_controlchange: // MIDI control change controller
173                          velocityAttenuation,                  eg1controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG1Controller.controller_number];
174                          pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);                  break;
         }  
   
   
         // setup EG 3 (VCO EG)  
         {  
             // if portamento mode is on, we dedicate EG3 purely for portamento, otherwise if portamento is off we do as told by the patch  
             bool  bPortamento = pEngineChannel->PortamentoMode && pEngineChannel->PortamentoPos >= 0.0f;  
             float eg3depth = (bPortamento)  
                                  ? RTMath::CentsToFreqRatio((pEngineChannel->PortamentoPos - (float) MIDIKey) * 100)  
                                  : RTMath::CentsToFreqRatio(pDimRgn->EG3Depth);  
             float eg3time = (bPortamento)  
                                 ? pEngineChannel->PortamentoTime  
                                 : pDimRgn->EG3Attack;  
             EG3.trigger(eg3depth, eg3time, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
             dmsg(5,("PortamentoPos=%f, depth=%f, time=%f\n", pEngineChannel->PortamentoPos, eg3depth, eg3time));  
         }  
   
   
         // setup LFO 1 (VCA LFO)  
         {  
             uint16_t lfo1_internal_depth;  
             switch (pDimRgn->LFO1Controller) {  
                 case ::gig::lfo1_ctrl_internal:  
                     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;  
             }  
             if (bLFO1Enabled) {  
                 pLFO1->trigger(pDimRgn->LFO1Frequency,  
                                start_level_min,  
                                lfo1_internal_depth,  
                                pDimRgn->LFO1ControlDepth,  
                                pDimRgn->LFO1FlipPhase,  
                                pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
                 pLFO1->update(pLFO1->ExtController ? pEngineChannel->ControllerTable[pLFO1->ExtController] : 0);  
             }  
175          }          }
176            if (pRegion->EG1ControllerInvert) eg1controllervalue = 127 - eg1controllervalue;
177    
178            return eg1controllervalue;
179        }
180    
181          // setup LFO 2 (VCF Cutoff LFO)      Voice::EGInfo Voice::CalculateEG1ControllerInfluence(double eg1ControllerValue) {
182          {          EGInfo eg;
183              uint16_t lfo2_internal_depth;          // (eg1attack is different from the others)
184              switch (pDimRgn->LFO2Controller) {          eg.Attack  = (pRegion->EG1ControllerAttackInfluence)  ?
185                  case ::gig::lfo2_ctrl_internal:              1 + 0.031 * (double) (pRegion->EG1ControllerAttackInfluence == 1 ?
186                      lfo2_internal_depth  = pDimRgn->LFO2InternalDepth;                                    1 : 1 << pRegion->EG1ControllerAttackInfluence) * eg1ControllerValue : 1.0;
187                      pLFO2->ExtController = 0; // no external controller          eg.Decay   = (pRegion->EG1ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerDecayInfluence)   * eg1ControllerValue : 1.0;
188                      bLFO2Enabled         = (lfo2_internal_depth > 0);          eg.Release = (pRegion->EG1ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerReleaseInfluence) * eg1ControllerValue : 1.0;
                     break;  
                 case ::gig::lfo2_ctrl_modwheel:  
                     lfo2_internal_depth  = 0;  
                     pLFO2->ExtController = 1; // MIDI controller 1  
                     bLFO2Enabled         = (pDimRgn->LFO2ControlDepth > 0);  
                     break;  
                 case ::gig::lfo2_ctrl_foot:  
                     lfo2_internal_depth  = 0;  
                     pLFO2->ExtController = 4; // MIDI controller 4  
                     bLFO2Enabled         = (pDimRgn->LFO2ControlDepth > 0);  
                     break;  
                 case ::gig::lfo2_ctrl_internal_modwheel:  
                     lfo2_internal_depth  = pDimRgn->LFO2InternalDepth;  
                     pLFO2->ExtController = 1; // MIDI controller 1  
                     bLFO2Enabled         = (lfo2_internal_depth > 0 || pDimRgn->LFO2ControlDepth > 0);  
                     break;  
                 case ::gig::lfo2_ctrl_internal_foot:  
                     lfo2_internal_depth  = pDimRgn->LFO2InternalDepth;  
                     pLFO2->ExtController = 4; // MIDI controller 4  
                     bLFO2Enabled         = (lfo2_internal_depth > 0 || pDimRgn->LFO2ControlDepth > 0);  
                     break;  
                 default:  
                     lfo2_internal_depth  = 0;  
                     pLFO2->ExtController = 0; // no external controller  
                     bLFO2Enabled         = false;  
             }  
             if (bLFO2Enabled) {  
                 pLFO2->trigger(pDimRgn->LFO2Frequency,  
                                start_level_max,  
                                lfo2_internal_depth,  
                                pDimRgn->LFO2ControlDepth,  
                                pDimRgn->LFO2FlipPhase,  
                                pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
                 pLFO2->update(pLFO2->ExtController ? pEngineChannel->ControllerTable[pLFO2->ExtController] : 0);  
             }  
         }  
189    
190            return eg;
191        }
192    
193          // setup LFO 3 (VCO LFO)      double Voice::GetEG2ControllerValue(uint8_t MIDIKeyVelocity) {
194          {          double eg2controllervalue = 0;
195              uint16_t lfo3_internal_depth;          switch (pRegion->EG2Controller.type) {
196              switch (pDimRgn->LFO3Controller) {              case ::gig::eg2_ctrl_t::type_none: // no controller defined
197                  case ::gig::lfo3_ctrl_internal:                  eg2controllervalue = 0;
198                      lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;                  break;
199                      pLFO3->ExtController = 0; // no external controller              case ::gig::eg2_ctrl_t::type_channelaftertouch:
200                      bLFO3Enabled         = (lfo3_internal_depth > 0);                  eg2controllervalue = GetGigEngineChannel()->ControllerTable[128];
201                      break;                  break;
202                  case ::gig::lfo3_ctrl_modwheel:              case ::gig::eg2_ctrl_t::type_velocity:
203                      lfo3_internal_depth  = 0;                  eg2controllervalue = MIDIKeyVelocity;
204                      pLFO3->ExtController = 1; // MIDI controller 1                  break;
205                      bLFO3Enabled         = (pDimRgn->LFO3ControlDepth > 0);              case ::gig::eg2_ctrl_t::type_controlchange: // MIDI control change controller
206                      break;                  eg2controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG2Controller.controller_number];
207                  case ::gig::lfo3_ctrl_aftertouch:                  break;
                     lfo3_internal_depth  = 0;  
                     pLFO3->ExtController = 128;  
                     bLFO3Enabled         = true;  
                     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 = 128;  
                     bLFO3Enabled         = (lfo3_internal_depth > 0 || pDimRgn->LFO3ControlDepth > 0);  
                     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);  
                 pLFO3->update(pLFO3->ExtController ? pEngineChannel->ControllerTable[pLFO3->ExtController] : 0);  
             }  
208          }          }
209            if (pRegion->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue;
210    
211            return eg2controllervalue;
212        }
213    
214          #if CONFIG_FORCE_FILTER      Voice::EGInfo Voice::CalculateEG2ControllerInfluence(double eg2ControllerValue) {
215          const bool bUseFilter = true;          EGInfo eg;
216          #else // use filter only if instrument file told so          eg.Attack  = (pRegion->EG2ControllerAttackInfluence)  ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerAttackInfluence)  * eg2ControllerValue : 1.0;
217          const bool bUseFilter = pDimRgn->VCFEnabled;          eg.Decay   = (pRegion->EG2ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerDecayInfluence)   * eg2ControllerValue : 1.0;
218          #endif // CONFIG_FORCE_FILTER          eg.Release = (pRegion->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerReleaseInfluence) * eg2ControllerValue : 1.0;
         SYNTHESIS_MODE_SET_FILTER(SynthesisMode, bUseFilter);  
         if (bUseFilter) {  
             #ifdef CONFIG_OVERRIDE_CUTOFF_CTRL  
             VCFCutoffCtrl.controller = CONFIG_OVERRIDE_CUTOFF_CTRL;  
             #else // use the one defined in the instrument file  
             switch (pDimRgn->VCFCutoffController) {  
                 case ::gig::vcf_cutoff_ctrl_modwheel:  
                     VCFCutoffCtrl.controller = 1;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_effect1:  
                     VCFCutoffCtrl.controller = 12;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_effect2:  
                     VCFCutoffCtrl.controller = 13;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_breath:  
                     VCFCutoffCtrl.controller = 2;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_foot:  
                     VCFCutoffCtrl.controller = 4;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_sustainpedal:  
                     VCFCutoffCtrl.controller = 64;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_softpedal:  
                     VCFCutoffCtrl.controller = 67;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_genpurpose7:  
                     VCFCutoffCtrl.controller = 82;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_genpurpose8:  
                     VCFCutoffCtrl.controller = 83;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_aftertouch:  
                     VCFCutoffCtrl.controller = 128;  
                     break;  
                 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  
   
             #ifndef CONFIG_OVERRIDE_FILTER_TYPE  
             finalSynthesisParameters.filterLeft.SetType(pDimRgn->VCFType);  
             finalSynthesisParameters.filterRight.SetType(pDimRgn->VCFType);  
             #else // override filter type  
             finalSynthesisParameters.filterLeft.SetType(CONFIG_OVERRIDE_FILTER_TYPE);  
             finalSynthesisParameters.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;  
   
             int cvalue;  
             if (VCFCutoffCtrl.controller) {  
                 cvalue = pEngineChannel->ControllerTable[VCFCutoffCtrl.controller];  
                 if (pDimRgn->VCFCutoffControllerInvert) cvalue = 127 - cvalue;  
                 // VCFVelocityScale in this case means Minimum cutoff  
                 if (cvalue < pDimRgn->VCFVelocityScale) cvalue = pDimRgn->VCFVelocityScale;  
             }  
             else {  
                 cvalue = pDimRgn->VCFCutoff;  
             }  
             cutoff *= float(cvalue);  
             if (cutoff > 127.0f) cutoff = 127.0f;  
219    
220              // calculate resonance          return eg;
221              float resonance = (float) (VCFResonanceCtrl.controller ? VCFResonanceCtrl.value : pDimRgn->VCFResonance);      }
222    
223              VCFCutoffCtrl.fvalue    = cutoff;      void Voice::InitLFO1() {
224              VCFResonanceCtrl.fvalue = resonance;          uint16_t lfo1_internal_depth;
225          }          switch (pRegion->LFO1Controller) {
226          else {              case ::gig::lfo1_ctrl_internal:
227              VCFCutoffCtrl.controller    = 0;                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
228              VCFResonanceCtrl.controller = 0;                  pLFO1->ExtController = 0; // no external controller
229                    bLFO1Enabled         = (lfo1_internal_depth > 0);
230                    break;
231                case ::gig::lfo1_ctrl_modwheel:
232                    lfo1_internal_depth  = 0;
233                    pLFO1->ExtController = 1; // MIDI controller 1
234                    bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
235                    break;
236                case ::gig::lfo1_ctrl_breath:
237                    lfo1_internal_depth  = 0;
238                    pLFO1->ExtController = 2; // MIDI controller 2
239                    bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
240                    break;
241                case ::gig::lfo1_ctrl_internal_modwheel:
242                    lfo1_internal_depth  = pRegion->LFO1InternalDepth;
243                    pLFO1->ExtController = 1; // MIDI controller 1
244                    bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
245                    break;
246                case ::gig::lfo1_ctrl_internal_breath:
247                    lfo1_internal_depth  = pRegion->LFO1InternalDepth;
248                    pLFO1->ExtController = 2; // MIDI controller 2
249                    bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
250                    break;
251                default:
252                    lfo1_internal_depth  = 0;
253                    pLFO1->ExtController = 0; // no external controller
254                    bLFO1Enabled         = false;
255            }
256            if (bLFO1Enabled) {
257                pLFO1->trigger(pRegion->LFO1Frequency,
258                               start_level_min,
259                               lfo1_internal_depth,
260                               pRegion->LFO1ControlDepth,
261                               pRegion->LFO1FlipPhase,
262                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
263                pLFO1->update(pLFO1->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO1->ExtController] : 0);
264          }          }
   
         return 0; // success  
265      }      }
266    
267      /**      void Voice::InitLFO2() {
268       *  Renders the audio data for this voice for the current audio fragment.          uint16_t lfo2_internal_depth;
269       *  The sample input data can either come from RAM (cached sample or sample          switch (pRegion->LFO2Controller) {
270       *  part) or directly from disk. The output signal will be rendered by              case ::gig::lfo2_ctrl_internal:
271       *  resampling / interpolation. If this voice is a disk streaming voice and                  lfo2_internal_depth  = pRegion->LFO2InternalDepth;
272       *  the voice completely played back the cached RAM part of the sample, it                  pLFO2->ExtController = 0; // no external controller
273       *  will automatically switch to disk playback for the next RenderAudio()                  bLFO2Enabled         = (lfo2_internal_depth > 0);
274       *  call.                  break;
275       *              case ::gig::lfo2_ctrl_modwheel:
276       *  @param Samples - number of samples to be rendered in this audio fragment cycle                  lfo2_internal_depth  = 0;
277       */                  pLFO2->ExtController = 1; // MIDI controller 1
278      void Voice::Render(uint Samples) {                  bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
279                    break;
280          // select default values for synthesis mode bits              case ::gig::lfo2_ctrl_foot:
281          SYNTHESIS_MODE_SET_LOOP(SynthesisMode, false);                  lfo2_internal_depth  = 0;
282                    pLFO2->ExtController = 4; // MIDI controller 4
283          switch (this->PlaybackState) {                  bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
284                    break;
285              case playback_state_init:              case ::gig::lfo2_ctrl_internal_modwheel:
286                  this->PlaybackState = playback_state_ram; // we always start playback from RAM cache and switch then to disk if needed                  lfo2_internal_depth  = pRegion->LFO2InternalDepth;
287                  // no break - continue with playback_state_ram                  pLFO2->ExtController = 1; // MIDI controller 1
288                    bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
289              case playback_state_ram: {                  break;
290                      if (RAMLoop) SYNTHESIS_MODE_SET_LOOP(SynthesisMode, true); // enable looping              case ::gig::lfo2_ctrl_internal_foot:
291                    lfo2_internal_depth  = pRegion->LFO2InternalDepth;
292                      // render current fragment                  pLFO2->ExtController = 4; // MIDI controller 4
293                      Synthesize(Samples, (sample_t*) pSample->GetCache().pStart, Delay);                  bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
294                    break;
295                      if (DiskVoice) {              default:
296                          // check if we reached the allowed limit of the sample RAM cache                  lfo2_internal_depth  = 0;
297                          if (finalSynthesisParameters.dPos > MaxRAMPos) {                  pLFO2->ExtController = 0; // no external controller
298                              dmsg(5,("Voice: switching to disk playback (Pos=%f)\n", finalSynthesisParameters.dPos));                  bLFO2Enabled         = false;
299                              this->PlaybackState = playback_state_disk;          }
300                          }          if (bLFO2Enabled) {
301                      } else if (finalSynthesisParameters.dPos >= pSample->GetCache().Size / pSample->FrameSize) {              pLFO2->trigger(pRegion->LFO2Frequency,
302                          this->PlaybackState = playback_state_end;                             start_level_max,
303                      }                             lfo2_internal_depth,
304                  }                             pRegion->LFO2ControlDepth,
305                  break;                             pRegion->LFO2FlipPhase,
306                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
307              case playback_state_disk: {              pLFO2->update(pLFO2->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO2->ExtController] : 0);
                     if (!DiskStreamRef.pStream) {  
                         // check if the disk thread created our ordered disk stream in the meantime  
                         DiskStreamRef.pStream = pDiskThread->AskForCreatedStream(DiskStreamRef.OrderID);  
                         if (!DiskStreamRef.pStream) {  
                             std::cout << stderr << "Disk stream not available in time!" << std::endl << std::flush;  
                             KillImmediately();  
                             return;  
                         }  
                         DiskStreamRef.pStream->IncrementReadPos(pSample->Channels * (int(finalSynthesisParameters.dPos) - MaxRAMPos));  
                         finalSynthesisParameters.dPos -= int(finalSynthesisParameters.dPos);  
                         RealSampleWordsLeftToRead = -1; // -1 means no silence has been added yet  
                     }  
   
                     const int sampleWordsLeftToRead = DiskStreamRef.pStream->GetReadSpace();  
   
                     // add silence sample at the end if we reached the end of the stream (for the interpolator)  
                     if (DiskStreamRef.State == Stream::state_end) {  
                         const int maxSampleWordsPerCycle = (pEngine->MaxSamplesPerCycle << CONFIG_MAX_PITCH) * pSample->Channels + 6; // +6 for the interpolator algorithm  
                         if (sampleWordsLeftToRead <= maxSampleWordsPerCycle) {  
                             // remember how many sample words there are before any silence has been added  
                             if (RealSampleWordsLeftToRead < 0) RealSampleWordsLeftToRead = sampleWordsLeftToRead;  
                             DiskStreamRef.pStream->WriteSilence(maxSampleWordsPerCycle - sampleWordsLeftToRead);  
                         }  
                     }  
   
                     sample_t* ptr = (sample_t*)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);  
             }  
308          }          }
309      }      }
310    
311      /**      void Voice::InitLFO3() {
312       * Process given list of MIDI control change and pitch bend events for          uint16_t lfo3_internal_depth;
313       * the given time.          switch (pRegion->LFO3Controller) {
314       *              case ::gig::lfo3_ctrl_internal:
315       * @param itEvent - iterator pointing to the next event to be processed                  lfo3_internal_depth  = pRegion->LFO3InternalDepth;
316       * @param End     - youngest time stamp where processing should be stopped                  pLFO3->ExtController = 0; // no external controller
317       */                  bLFO3Enabled         = (lfo3_internal_depth > 0);
318      void Voice::processCCEvents(RTList<Event>::Iterator& itEvent, uint End) {                  break;
319          for (; itEvent && itEvent->FragmentPos() <= End; ++itEvent) {              case ::gig::lfo3_ctrl_modwheel:
320              if (itEvent->Type == Event::type_control_change &&                  lfo3_internal_depth  = 0;
321                  itEvent->Param.CC.Controller) { // if (valid) MIDI control change event                  pLFO3->ExtController = 1; // MIDI controller 1
322                  if (itEvent->Param.CC.Controller == VCFCutoffCtrl.controller) {                  bLFO3Enabled         = (pRegion->LFO3ControlDepth > 0);
323                      processCutoffEvent(itEvent);                  break;
324                  }              case ::gig::lfo3_ctrl_aftertouch:
325                  if (itEvent->Param.CC.Controller == VCFResonanceCtrl.controller) {                  lfo3_internal_depth  = 0;
326                      processResonanceEvent(itEvent);                  pLFO3->ExtController = 128;
327                  }                  bLFO3Enabled         = true;
328                  if (itEvent->Param.CC.Controller == pLFO1->ExtController) {                  break;
329                      pLFO1->update(itEvent->Param.CC.Value);              case ::gig::lfo3_ctrl_internal_modwheel:
330                  }                  lfo3_internal_depth  = pRegion->LFO3InternalDepth;
331                  if (itEvent->Param.CC.Controller == pLFO2->ExtController) {                  pLFO3->ExtController = 1; // MIDI controller 1
332                      pLFO2->update(itEvent->Param.CC.Value);                  bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
333                  }                  break;
334                  if (itEvent->Param.CC.Controller == pLFO3->ExtController) {              case ::gig::lfo3_ctrl_internal_aftertouch:
335                      pLFO3->update(itEvent->Param.CC.Value);                  lfo3_internal_depth  = pRegion->LFO3InternalDepth;
336                  }                  pLFO3->ExtController = 128;
337                  if (pDimRgn->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&                  bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
338                      itEvent->Param.CC.Controller == pDimRgn->AttenuationController.controller_number) {                  break;
339                      CrossfadeSmoother.update(Engine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.CC.Value)]);              default:
340                  }                  lfo3_internal_depth  = 0;
341                  if (itEvent->Param.CC.Controller == 7) { // volume                  pLFO3->ExtController = 0; // no external controller
342                      VolumeSmoother.update(Engine::VolumeCurve[itEvent->Param.CC.Value]);                  bLFO3Enabled         = false;
343                  } else if (itEvent->Param.CC.Controller == 10) { // panpot          }
344                      PanLeftSmoother.update(Engine::PanCurve[128 - itEvent->Param.CC.Value]);          if (bLFO3Enabled) {
345                      PanRightSmoother.update(Engine::PanCurve[itEvent->Param.CC.Value]);              pLFO3->trigger(pRegion->LFO3Frequency,
346                  }                             start_level_mid,
347              } else if (itEvent->Type == Event::type_pitchbend) { // if pitch bend event                             lfo3_internal_depth,
348                  processPitchEvent(itEvent);                             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::processPitchEvent(RTList<Event>::Iterator& itEvent) {      float Voice::CalculateCutoffBase(uint8_t MIDIKeyVelocity) {
356          const float pitch = RTMath::CentsToFreqRatio(((double) itEvent->Param.Pitch.Pitch / 8192.0) * 200.0); // +-two semitones = +-200 cents          float cutoff = pRegion->GetVelocityCutoff(MIDIKeyVelocity);
357          finalSynthesisParameters.fFinalPitch *= pitch;          if (pRegion->VCFKeyboardTracking) {
358          PitchBend = pitch;              cutoff *= RTMath::CentsToFreqRatioUnlimited((MIDIKey - pRegion->VCFKeyboardTrackingBreakpoint) * 100);
359            }
360            return cutoff;
361        }
362    
363        float Voice::CalculateFinalCutoff(float cutoffBase) {
364            int cvalue;
365            if (VCFCutoffCtrl.controller) {
366                cvalue = GetGigEngineChannel()->ControllerTable[VCFCutoffCtrl.controller];
367                if (pRegion->VCFCutoffControllerInvert) cvalue = 127 - cvalue;
368                // VCFVelocityScale in this case means Minimum cutoff
369                if (cvalue < pRegion->VCFVelocityScale) cvalue = pRegion->VCFVelocityScale;
370            }
371            else {
372                cvalue = pRegion->VCFCutoff;
373            }
374            float fco = cutoffBase * float(cvalue);
375            if (fco > 127.0f) fco = 127.0f;
376    
377            return fco;
378      }      }
379    
380      void Voice::processCutoffEvent(RTList<Event>::Iterator& itEvent) {      uint8_t Voice::GetVCFCutoffCtrl() {
381          int ccvalue = itEvent->Param.CC.Value;          uint8_t ctrl;
382          if (VCFCutoffCtrl.value == ccvalue) return;          switch (pRegion->VCFCutoffController) {
383          VCFCutoffCtrl.value == ccvalue;              case ::gig::vcf_cutoff_ctrl_modwheel:
384          if (pDimRgn->VCFCutoffControllerInvert)  ccvalue = 127 - ccvalue;                  ctrl = 1;
385          if (ccvalue < pDimRgn->VCFVelocityScale) ccvalue = pDimRgn->VCFVelocityScale;                  break;
386          float cutoff = CutoffBase * float(ccvalue);              case ::gig::vcf_cutoff_ctrl_effect1:
387          if (cutoff > 127.0f) cutoff = 127.0f;                  ctrl = 12;
388                    break;
389                case ::gig::vcf_cutoff_ctrl_effect2:
390                    ctrl = 13;
391                    break;
392                case ::gig::vcf_cutoff_ctrl_breath:
393                    ctrl = 2;
394                    break;
395                case ::gig::vcf_cutoff_ctrl_foot:
396                    ctrl = 4;
397                    break;
398                case ::gig::vcf_cutoff_ctrl_sustainpedal:
399                    ctrl = 64;
400                    break;
401                case ::gig::vcf_cutoff_ctrl_softpedal:
402                    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          VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of fFinalCutoff next time          return ctrl;
         fFinalCutoff = cutoff;  
420      }      }
421    
422      void Voice::processResonanceEvent(RTList<Event>::Iterator& itEvent) {      uint8_t Voice::GetVCFResonanceCtrl() {
423          // convert absolute controller value to differential          uint8_t ctrl;
424          const int ctrldelta = itEvent->Param.CC.Value - VCFResonanceCtrl.value;          switch (pRegion->VCFResonanceController) {
425          VCFResonanceCtrl.value = itEvent->Param.CC.Value;              case ::gig::vcf_res_ctrl_genpurpose3:
426          const float resonancedelta = (float) ctrldelta;                  ctrl = 18;
427          fFinalResonance += resonancedelta;                  break;
428          // needed for initialization of parameter              case ::gig::vcf_res_ctrl_genpurpose4:
429          VCFResonanceCtrl.fvalue = itEvent->Param.CC.Value;                  ctrl = 19;
430      }                  break;
431                case ::gig::vcf_res_ctrl_genpurpose5:
432      /**                  ctrl = 80;
433       *  Synthesizes the current audio fragment for this voice.                  break;
434       *              case ::gig::vcf_res_ctrl_genpurpose6:
435       *  @param Samples - number of sample points to be rendered in this audio                  ctrl = 81;
436       *                   fragment cycle                  break;
437       *  @param pSrc    - pointer to input sample data              case ::gig::vcf_res_ctrl_none:
438       *  @param Skip    - number of sample points to skip in output buffer              default:
439       */                  ctrl = 0;
     void Voice::Synthesize(uint Samples, sample_t* pSrc, uint Skip) {  
         finalSynthesisParameters.pOutLeft  = &pEngineChannel->pChannelLeft->Buffer()[Skip];  
         finalSynthesisParameters.pOutRight = &pEngineChannel->pChannelRight->Buffer()[Skip];  
         finalSynthesisParameters.pSrc      = pSrc;  
   
         RTList<Event>::Iterator itCCEvent = pEngineChannel->pEvents->first();  
         RTList<Event>::Iterator itNoteEvent = pEngineChannel->pMIDIKeyInfo[MIDIKey].pEvents->first();  
   
         if (itTriggerEvent) { // skip events that happened before this voice was triggered  
             while (itCCEvent && itCCEvent->FragmentPos() <= Skip) ++itCCEvent;  
             while (itNoteEvent && itNoteEvent->FragmentPos() <= Skip) ++itNoteEvent;  
         }  
   
         uint killPos;  
         if (itKillEvent) {  
             int maxFadeOutPos = Samples - pEngine->MinFadeOutSamples;  
             if (maxFadeOutPos < 0) {  
                 // There's not enough space in buffer to do a fade out  
                 // from max volume (this can only happen for audio  
                 // drivers that use Samples < MaxSamplesPerCycle).  
                 // End the EG1 here, at pos 0, with a shorter max fade  
                 // out time.  
                 EG1.enterFadeOutStage(Samples / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
                 itKillEvent = Pool<Event>::Iterator();  
             } else {  
                 killPos = RTMath::Min(itKillEvent->FragmentPos(), maxFadeOutPos);  
             }  
440          }          }
441    
442          uint i = Skip;          return ctrl;
443          while (i < Samples) {      }
             int iSubFragmentEnd = RTMath::Min(i + CONFIG_DEFAULT_SUBFRAGMENT_SIZE, Samples);  
   
             // initialize all final synthesis parameters  
             finalSynthesisParameters.fFinalPitch = PitchBase * PitchBend;  
             fFinalCutoff    = VCFCutoffCtrl.fvalue;  
             fFinalResonance = VCFResonanceCtrl.fvalue;  
   
             // process MIDI control change and pitchbend events for this subfragment  
             processCCEvents(itCCEvent, iSubFragmentEnd);  
   
             float fFinalVolume = VolumeSmoother.render() * CrossfadeSmoother.render();  
 #ifdef CONFIG_PROCESS_MUTED_CHANNELS  
             if (pEngineChannel->GetMute()) fFinalVolume = 0;  
 #endif  
   
             // process transition events (note on, note off & sustain pedal)  
             processTransitionEvents(itNoteEvent, iSubFragmentEnd);  
   
             // if the voice was killed in this subfragment, or if the  
             // filter EG is finished, switch EG1 to fade out stage  
             if ((itKillEvent && killPos <= iSubFragmentEnd) ||  
                 (SYNTHESIS_MODE_GET_FILTER(SynthesisMode) &&  
                  EG2.getSegmentType() == EGADSR::segment_end)) {  
                 EG1.enterFadeOutStage();  
                 itKillEvent = Pool<Event>::Iterator();  
             }  
444    
445              // process envelope generators      void Voice::TriggerEG1(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
446              switch (EG1.getSegmentType()) {          EG1.trigger(pRegion->EG1PreAttack,
447                  case EGADSR::segment_lin:                      pRegion->EG1Attack * egInfo.Attack,
448                      fFinalVolume *= EG1.processLin();                      pRegion->EG1Hold,
449                      break;                      pRegion->EG1Decay1 * egInfo.Decay * velrelease,
450                  case EGADSR::segment_exp:                      pRegion->EG1Decay2 * egInfo.Decay * velrelease,
451                      fFinalVolume *= EG1.processExp();                      pRegion->EG1InfiniteSustain,
452                      break;                      pRegion->EG1Sustain,
453                  case EGADSR::segment_end:                      pRegion->EG1Release * egInfo.Release * velrelease,
454                      fFinalVolume *= EG1.getLevel();                      velocityAttenuation,
455                      break; // noop                      sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
456              }      }
             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 *= EG3.render();  
457    
458              // process low frequency oscillators      void Voice::TriggerEG2(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
459              if (bLFO1Enabled) fFinalVolume *= (1.0f - pLFO1->render());          EG2.trigger(uint(RgnInfo.EG2PreAttack),
460              if (bLFO2Enabled) fFinalCutoff *= pLFO2->render();                      RgnInfo.EG2Attack * egInfo.Attack,
461              if (bLFO3Enabled) finalSynthesisParameters.fFinalPitch *= RTMath::CentsToFreqRatio(pLFO3->render());                      false,
462                        RgnInfo.EG2Decay1 * egInfo.Decay * velrelease,
463              // if filter enabled then update filter coefficients                      RgnInfo.EG2Decay2 * egInfo.Decay * velrelease,
464              if (SYNTHESIS_MODE_GET_FILTER(SynthesisMode)) {                      RgnInfo.EG2InfiniteSustain,
465                  finalSynthesisParameters.filterLeft.SetParameters(fFinalCutoff, fFinalResonance, pEngine->SampleRate);                      uint(RgnInfo.EG2Sustain),
466                  finalSynthesisParameters.filterRight.SetParameters(fFinalCutoff, fFinalResonance, pEngine->SampleRate);                      RgnInfo.EG2Release * egInfo.Release * velrelease,
467              }                      velocityAttenuation,
468                        sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
469        }
470    
471              // do we need resampling?      void Voice::ProcessGroupEvent(RTList<Event>::Iterator& itEvent) {
472              const float __PLUS_ONE_CENT  = 1.000577789506554859250142541782224725466f;          dmsg(4,("Voice %x processGroupEvents event type=%d", this, itEvent->Type));
             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.uiToGo            = iSubFragmentEnd - i;  
 #ifdef CONFIG_INTERPOLATE_VOLUME  
             finalSynthesisParameters.fFinalVolumeDeltaLeft  =  
                 (fFinalVolume * VolumeLeft  * PanLeftSmoother.render() -  
                  finalSynthesisParameters.fFinalVolumeLeft) / finalSynthesisParameters.uiToGo;  
             finalSynthesisParameters.fFinalVolumeDeltaRight =  
                 (fFinalVolume * VolumeRight * PanRightSmoother.render() -  
                  finalSynthesisParameters.fFinalVolumeRight) / finalSynthesisParameters.uiToGo;  
 #else  
             finalSynthesisParameters.fFinalVolumeLeft  =  
                 fFinalVolume * VolumeLeft  * PanLeftSmoother.render();  
             finalSynthesisParameters.fFinalVolumeRight =  
                 fFinalVolume * VolumeRight * PanRightSmoother.render();  
 #endif  
             // render audio for one subfragment  
             RunSynthesisFunction(SynthesisMode, &finalSynthesisParameters, &loop);  
   
             // stop the rendering if volume EG is finished  
             if (EG1.getSegmentType() == EGADSR::segment_end) break;  
   
             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 (pDimRgn->SampleLoops && Pos <= pDimRgn->pSampleLoops[0].LoopStart && pDimRgn->pSampleLoops[0].LoopStart < newPos) {  
                     EG1.update(EGADSR::event_hold_end, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
                 }  
473    
474                  EG1.increment(1);          // TODO: The SustainPedal condition could be wrong, maybe the
475                  if (!EG1.toStageEndLeft()) EG1.update(EGADSR::event_stage_end, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);          // check should be if this Voice is in release stage or is a
476              }          // release sample instead. Need to test this in GSt.
477              if (EG2.active()) {          if (itEvent->Param.Note.Key != MIDIKey ||
478                  EG2.increment(1);              !GetGigEngineChannel()->SustainPedal) {
479                  if (!EG2.toStageEndLeft()) EG2.update(EGADSR::event_stage_end, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);              dmsg(4,("Voice %x - kill", this));
             }  
             EG3.increment(1);  
             if (!EG3.toEndLeft()) EG3.update(); // neutralize envelope coefficient if end reached  
480    
481              Pos = newPos;              // kill the voice fast
482              i = iSubFragmentEnd;              pEG1->enterFadeOutStage();
483          }          }
484      }      }
485    
486      /** @brief Update current portamento position.      void Voice::CalculateFadeOutCoeff(float FadeOutTime, float SampleRate) {
487       *          EG1.CalculateFadeOutCoeff(FadeOutTime, SampleRate);
      * Will be called when portamento mode is enabled to get the final  
      * portamento position of this active voice from where the next voice(s)  
      * might continue to slide on.  
      *  
      * @param itNoteOffEvent - event which causes this voice to die soon  
      */  
     void Voice::UpdatePortamentoPos(Pool<Event>::Iterator& itNoteOffEvent) {  
         const float fFinalEG3Level = EG3.level(itNoteOffEvent->FragmentPos());  
         pEngineChannel->PortamentoPos = (float) MIDIKey + RTMath::FreqRatioToCents(fFinalEG3Level) * 0.01f;  
     }  
   
     /**  
      *  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!  
      *  
      * If it's necessary to know when the voice's disk stream was actually  
      * deleted, then one can set the optional @a bRequestNotification  
      * parameter and this method will then return the handle of the disk  
      * stream (unique identifier) and one can use this handle to poll the  
      * disk thread if this stream has been deleted. In any case this method  
      * will return immediately and will not block until the stream actually  
      * was deleted.  
      *  
      * @param bRequestNotification - (optional) whether the disk thread shall  
      *                                provide a notification once it deleted  
      *                               the respective disk stream  
      *                               (default=false)  
      * @returns handle to the voice's disk stream or @c Stream::INVALID_HANDLE  
      *          if the voice did not use a disk stream at all  
      * @see Kill()  
      */  
     Stream::Handle Voice::KillImmediately(bool bRequestNotification) {  
         Stream::Handle hStream = Stream::INVALID_HANDLE;  
         if (DiskVoice && DiskStreamRef.State != Stream::state_unused) {  
             pDiskThread->OrderDeletionOfStream(&DiskStreamRef, bRequestNotification);  
             hStream = DiskStreamRef.hStream;  
         }  
         Reset();  
         return hStream;  
     }  
   
     /**  
      *  Kill the voice in regular sense. Let the voice render audio until  
      *  the kill event actually occured and then fade down the volume level  
      *  very quickly and let the voice die finally. Unlike a normal release  
      *  of a voice, a kill process cannot be cancalled and is therefore  
      *  usually used for voice stealing and key group conflicts.  
      *  
      *  @param itKillEvent - event which caused the voice to be killed  
      */  
     void Voice::Kill(Pool<Event>::Iterator& itKillEvent) {  
         #if CONFIG_DEVMODE  
         if (!itKillEvent) dmsg(1,("gig::Voice::Kill(): ERROR, !itKillEvent !!!\n"));  
         if (itKillEvent && !itKillEvent.isValid()) dmsg(1,("gig::Voice::Kill(): ERROR, itKillEvent invalid !!!\n"));  
         #endif // CONFIG_DEVMODE  
   
         if (itTriggerEvent && itKillEvent->FragmentPos() <= itTriggerEvent->FragmentPos()) return;  
         this->itKillEvent = itKillEvent;  
488      }      }
489    
490  }} // namespace LinuxSampler::gig  }} // namespace LinuxSampler::gig
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