/[svn]/linuxsampler/trunk/src/engines/gig/Voice.cpp
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revision 2012 by iliev, Fri Oct 23 17:53:17 2009 UTC revision 3721 by schoenebeck, Mon Jan 20 15:10:05 2020 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 - 2009 Christian Schoenebeck                       *   *   Copyright (C) 2005 - 2008 Christian Schoenebeck                       *
7     *   Copyright (C) 2009 Christian Schoenebeck and Grigor Iliev             *
8     *   Copyright (C) 2010 - 2017 Christian Schoenebeck and Andreas Persson   *
9   *                                                                         *   *                                                                         *
10   *   This program is free software; you can redistribute it and/or modify  *   *   This program is free software; you can redistribute it and/or modify  *
11   *   it under the terms of the GNU General Public License as published by  *   *   it under the terms of the GNU General Public License as published by  *
# Line 31  Line 33 
33    
34  namespace LinuxSampler { namespace gig {  namespace LinuxSampler { namespace gig {
35    
36      Voice::Voice() {      // sanity checks: fromGigLfoWave() assumes equally mapped enums
37          pEngine     = NULL;      static_assert(int64_t(::gig::lfo_wave_sine) == int64_t(LFO::wave_sine),
38          pDiskThread = NULL;                    "enum LFO::wave_t not equally value mapped to libgig's enum ::gig::lfo_wave_t");
39          PlaybackState = playback_state_end;      static_assert(int64_t(::gig::lfo_wave_triangle) == int64_t(LFO::wave_triangle),
40          pLFO1 = new LFOUnsigned(1.0f);  // amplitude EG (0..1 range)                    "enum LFO::wave_t not equally value mapped to libgig's enum ::gig::lfo_wave_t");
41          pLFO2 = new LFOUnsigned(1.0f);  // filter EG (0..1 range)      static_assert(int64_t(::gig::lfo_wave_saw) == int64_t(LFO::wave_saw),
42          pLFO3 = new LFOSigned(1200.0f); // pitch EG (-1200..+1200 range)                    "enum LFO::wave_t not equally value mapped to libgig's enum ::gig::lfo_wave_t");
43          KeyGroup = 0;      static_assert(int64_t(::gig::lfo_wave_square) == int64_t(LFO::wave_square),
44          SynthesisMode = 0; // set all mode bits to 0 first                    "enum LFO::wave_t not equally value mapped to libgig's enum ::gig::lfo_wave_t");
45          // select synthesis implementation (asm core is not supported ATM)  
46          #if 0 // CONFIG_ASM && ARCH_X86      // converts ::gig::lfo_wave_t (libgig) -> LFO::wave_t (LinuxSampler)
47          SYNTHESIS_MODE_SET_IMPLEMENTATION(SynthesisMode, Features::supportsMMX() && Features::supportsSSE());      inline LFO::wave_t fromGigLfoWave(::gig::lfo_wave_t wave) {
48          #else          // simply assuming equally mapped enums on both sides
49          SYNTHESIS_MODE_SET_IMPLEMENTATION(SynthesisMode, false);          return static_cast<LFO::wave_t>(wave);
50          #endif      }
51          SYNTHESIS_MODE_SET_PROFILING(SynthesisMode, Profiler::isEnabled());  
52        // Returns true for GigaStudio's original filter types (which are resembled
53        // by LS very accurately with same frequency response and patch settings
54        // behaviour), false for our own LS specific filter implementation types.
55        constexpr bool isGStFilterType(::gig::vcf_type_t type) {
56            return type == ::gig::vcf_type_lowpass ||
57                   type == ::gig::vcf_type_lowpassturbo ||
58                   type == ::gig::vcf_type_bandpass ||
59                   type == ::gig::vcf_type_highpass ||
60                   type == ::gig::vcf_type_bandreject;
61        }
62    
63          finalSynthesisParameters.filterLeft.Reset();      Voice::Voice() {
64          finalSynthesisParameters.filterRight.Reset();          pEngine = NULL;
65            pEG1 = &EG1;
66            pEG2 = &EG2;
67      }      }
68    
69      Voice::~Voice() {      Voice::~Voice() {
70          if (pLFO1) delete pLFO1;      }
71          if (pLFO2) delete pLFO2;  
72          if (pLFO3) delete pLFO3;      EngineChannel* Voice::GetGigEngineChannel() {
73            return static_cast<EngineChannel*>(pEngineChannel);
74      }      }
75    
76      void Voice::SetEngine(LinuxSampler::Engine* pEngine) {      void Voice::SetEngine(LinuxSampler::Engine* pEngine) {
# Line 65  namespace LinuxSampler { namespace gig { Line 80  namespace LinuxSampler { namespace gig {
80          dmsg(6,("Voice::SetEngine()\n"));          dmsg(6,("Voice::SetEngine()\n"));
81      }      }
82    
83      /**      Voice::SampleInfo Voice::GetSampleInfo() {
84       *  Initializes and triggers the voice, a disk stream will be launched if          SampleInfo si;
85       *  needed.          si.SampleRate       = pSample->SamplesPerSecond;
86       *          si.ChannelCount     = pSample->Channels;
87       *  @param pEngineChannel - engine channel on which this voice was ordered          si.FrameSize        = pSample->FrameSize;
88       *  @param itNoteOnEvent  - event that caused triggering of this voice          si.BitDepth         = pSample->BitDepth;
89       *  @param PitchBend      - MIDI detune factor (-8192 ... +8191)          si.TotalFrameCount  = (uint)pSample->SamplesTotal;
      *  @param pDimRgn        - points to the dimension region which provides sample wave(s) and articulation data  
      *  @param VoiceType      - type of this voice  
      *  @param iKeyGroup      - a value > 0 defines a key group in which this voice is member of  
      *  @returns 0 on success, a value < 0 if the voice wasn't triggered  
      *           (either due to an error or e.g. because no region is  
      *           defined for the given key)  
      */  
     int Voice::Trigger(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent, int PitchBend, ::gig::DimensionRegion* pDimRgn, type_t VoiceType, int iKeyGroup) {  
         this->pEngineChannel = pEngineChannel;  
         this->pDimRgn        = pDimRgn;  
         Orphan = false;  
   
         #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);  
   
         // For 16 bit samples, we downscale by 32768 to convert from  
         // int16 value range to DSP value range (which is  
         // -1.0..1.0). For 24 bit, we downscale from int32.  
         float volume = velocityAttenuation / (pSample->BitDepth == 16 ? 32768.0f : 32768.0f * 65536.0f);  
   
         volume *= pDimRgn->SampleAttenuation * pEngineChannel->GlobalVolume * GLOBAL_VOLUME;  
   
         // 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);  
         // select bit depth (16 or 24)  
         SYNTHESIS_MODE_SET_BITDEPTH24(SynthesisMode, pSample->BitDepth == 24);  
90    
91          // get starting crossfade volume level          si.HasLoops       = pRegion->SampleLoops;
92          float crossfadeVolume;          si.LoopStart      = (si.HasLoops) ? pRegion->pSampleLoops[0].LoopStart  : 0;
93          switch (pDimRgn->AttenuationController.type) {          si.LoopLength     = (si.HasLoops) ? pRegion->pSampleLoops[0].LoopLength : 0;
94              case ::gig::attenuation_ctrl_t::type_channelaftertouch:          si.LoopPlayCount  = pSample->LoopPlayCount;
95                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(pEngineChannel->ControllerTable[128])];          si.Unpitched      = !pRegion->PitchTrack;
96                  break;  
97              case ::gig::attenuation_ctrl_t::type_velocity:          return si;
98                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(itNoteOnEvent->Param.Note.Velocity)];      }
                 break;  
             case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate  
                 crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(pEngineChannel->ControllerTable[pDimRgn->AttenuationController.controller_number])];  
                 break;  
             case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined  
             default:  
                 crossfadeVolume = 1.0f;  
         }  
99    
100          VolumeLeft  = volume * Engine::PanCurve[64 - pDimRgn->Pan];      Voice::RegionInfo Voice::GetRegionInfo() {
101          VolumeRight = volume * Engine::PanCurve[64 + pDimRgn->Pan];          RegionInfo ri;
102            ri.UnityNote = pRegion->UnityNote;
103            ri.FineTune  = pRegion->FineTune;
104            ri.Pan       = pRegion->Pan;
105            ri.SampleStartOffset = pRegion->SampleStartOffset;
106    
107          float subfragmentRate = pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE;          ri.EG2PreAttack        = pRegion->EG2PreAttack;
108          CrossfadeSmoother.trigger(crossfadeVolume, subfragmentRate);          ri.EG2Attack           = pRegion->EG2Attack;
109          VolumeSmoother.trigger(pEngineChannel->MidiVolume, subfragmentRate);          ri.EG2Decay1           = pRegion->EG2Decay1;
110          PanLeftSmoother.trigger(pEngineChannel->GlobalPanLeft, subfragmentRate);          ri.EG2Decay2           = pRegion->EG2Decay2;
111          PanRightSmoother.trigger(pEngineChannel->GlobalPanRight, subfragmentRate);          ri.EG2Sustain          = pRegion->EG2Sustain;
112            ri.EG2InfiniteSustain  = pRegion->EG2InfiniteSustain;
113          finalSynthesisParameters.dPos = pDimRgn->SampleStartOffset; // offset where we should start playback of sample (0 - 2000 sample points)          ri.EG2Release          = pRegion->EG2Release;
         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  
             if (cachedsamples > (pEngine->MaxSamplesPerCycle << CONFIG_MAX_PITCH)) {  
                 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)  
             } else {  
                 // The cache is too small to fit a max sample buffer.  
                 // Setting MaxRAMPos to 0 will probably cause a click  
                 // in the audio, but it's better than not handling  
                 // this case at all, which would have caused the  
                 // unsigned MaxRAMPos to be set to a negative number.  
                 MaxRAMPos = 0;  
             }  
114    
115              // check if there's a loop defined which completely fits into the cached (RAM) part of the sample          ri.EG3Attack     = pRegion->EG3Attack;
116              RAMLoop = (pDimRgn->SampleLoops && (loopinfo.LoopStart + loopinfo.LoopLength) <= MaxRAMPos);          ri.EG3Depth      = pRegion->EG3Depth;
117            ri.VCFEnabled    = pRegion->VCFEnabled;
118            ri.VCFType       = Filter::vcf_type_t(pRegion->VCFType);
119            ri.VCFResonance  = pRegion->VCFResonance;
120    
121              if (pDiskThread->OrderNewStream(&DiskStreamRef, pDimRgn, MaxRAMPos, !RAMLoop) < 0) {          ri.ReleaseTriggerDecay = 0.01053 * (256 >> pRegion->ReleaseTriggerDecay);
                 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 = pEngineChannel->pInstrument->FineTune + pDimRgn->FineTune + 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::CentsToFreqRatioUnlimited(pitchbasecents) * (double(pSample->SamplesPerSecond) / double(pEngine->SampleRate));  
             this->PitchBendRange = 1.0 / 8192.0 * 100.0 * pEngineChannel->pInstrument->PitchbendRange;  
             this->PitchBend = RTMath::CentsToFreqRatio(PitchBend * PitchBendRange);  
         }  
   
         // 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;  
122    
123              // calculate influence of EG1 controller on EG1's parameters          return ri;
124              // (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;  
125    
126              // calculate influence of EG2 controller on EG2's parameters      Voice::InstrumentInfo Voice::GetInstrumentInfo() {
127              double eg2attack  = (pDimRgn->EG2ControllerAttackInfluence)  ? 1 + 0.00775 * (double) (1 << pDimRgn->EG2ControllerAttackInfluence)  * eg2controllervalue : 1.0;          InstrumentInfo ii;
128              double eg2decay   = (pDimRgn->EG2ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pDimRgn->EG2ControllerDecayInfluence)   * eg2controllervalue : 1.0;          ii.FineTune = GetGigEngineChannel()->pInstrument->FineTune;
129              double eg2release = (pDimRgn->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pDimRgn->EG2ControllerReleaseInfluence) * eg2controllervalue : 1.0;          ii.PitchbendRange = GetGigEngineChannel()->pInstrument->PitchbendRange;
   
             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);  
         }  
   
   
         // 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);  
             }  
         }  
130    
131            return ii;
132        }
133    
134          // setup LFO 2 (VCF Cutoff LFO)      double Voice::GetSampleAttenuation() {
135          {          return pRegion->SampleAttenuation;
136              uint16_t lfo2_internal_depth;      }
137              switch (pDimRgn->LFO2Controller) {  
138                  case ::gig::lfo2_ctrl_internal:      double Voice::GetVelocityAttenuation(uint8_t MIDIKeyVelocity) {
139                      lfo2_internal_depth  = pDimRgn->LFO2InternalDepth;          return pRegion->GetVelocityAttenuation(MIDIKeyVelocity);
140                      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);  
                 pLFO2->update(pLFO2->ExtController ? pEngineChannel->ControllerTable[pLFO2->ExtController] : 0);  
             }  
         }  
141    
142        double Voice::GetVelocityRelease(uint8_t MIDIKeyVelocity) {
143            return pRegion->GetVelocityRelease(MIDIKeyVelocity);
144        }
145    
146          // setup LFO 3 (VCO LFO)      void Voice::ProcessCCEvent(RTList<Event>::Iterator& itEvent) {
147          {          if (itEvent->Type == Event::type_control_change && itEvent->Param.CC.Controller) { // if (valid) MIDI control change event
148              uint16_t lfo3_internal_depth;              if (pRegion->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&
149              switch (pDimRgn->LFO3Controller) {                  itEvent->Param.CC.Controller == pRegion->AttenuationController.controller_number) {
150                  case ::gig::lfo3_ctrl_internal:                  CrossfadeSmoother.update(AbstractEngine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.CC.Value)]);
                     lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;  
                     pLFO3->ExtController = 0; // no external controller  
                     bLFO3Enabled         = (lfo3_internal_depth > 0);  
                     break;  
                 case ::gig::lfo3_ctrl_modwheel:  
                     lfo3_internal_depth  = 0;  
                     pLFO3->ExtController = 1; // MIDI controller 1  
                     bLFO3Enabled         = (pDimRgn->LFO3ControlDepth > 0);  
                     break;  
                 case ::gig::lfo3_ctrl_aftertouch:  
                     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;  
151              }              }
152              if (bLFO3Enabled) {          }
153                  pLFO3->trigger(pDimRgn->LFO3Frequency,      }
154                                 start_level_mid,  
155                                 lfo3_internal_depth,      void Voice::ProcessChannelPressureEvent(RTList<Event>::Iterator& itEvent) {
156                                 pDimRgn->LFO3ControlDepth,          if (itEvent->Type == Event::type_channel_pressure) { // if (valid) MIDI channel pressure (aftertouch) event
157                                 false,              if (pRegion->AttenuationController.type == ::gig::attenuation_ctrl_t::type_channelaftertouch) {
158                                 pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);                  CrossfadeSmoother.update(AbstractEngine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.ChannelPressure.Value)]);
                 pLFO3->update(pLFO3->ExtController ? pEngineChannel->ControllerTable[pLFO3->ExtController] : 0);  
159              }              }
160          }          }
161        }
162    
163        void Voice::ProcessPolyphonicKeyPressureEvent(RTList<Event>::Iterator& itEvent) {
164            // Not used so far
165        }
166    
167          #if CONFIG_FORCE_FILTER      uint8_t Voice::MinCutoff() const {
168          const bool bUseFilter = true;          // If there's a cutoff controller defined then VCFVelocityScale means
169          #else // use filter only if instrument file told so          // "minimum cutoff". If there is no MIDI controller defined for cutoff
170          const bool bUseFilter = pDimRgn->VCFEnabled;          // then VCFVelocityScale is already taken into account on libgig side
171          #endif // CONFIG_FORCE_FILTER          // instead by call to pRegion->GetVelocityCutoff(MIDIKeyVelocity).
172          SYNTHESIS_MODE_SET_FILTER(SynthesisMode, bUseFilter);          return pRegion->VCFVelocityScale;
173          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  
174    
175              #ifdef CONFIG_OVERRIDE_RESONANCE_CTRL      // This is called on any cutoff controller changes, however not when the
176              VCFResonanceCtrl.controller = CONFIG_OVERRIDE_RESONANCE_CTRL;      // voice is triggered. So the initial cutoff value is retrieved by a call
177              #else // use the one defined in the instrument file      // to CalculateFinalCutoff() instead.
178              switch (pDimRgn->VCFResonanceController) {      void Voice::ProcessCutoffEvent(RTList<Event>::Iterator& itEvent) {
179                  case ::gig::vcf_res_ctrl_genpurpose3:          if (VCFCutoffCtrl.value == itEvent->Param.CC.Value) return;
180                      VCFResonanceCtrl.controller = 18;          float ccvalue = VCFCutoffCtrl.value = itEvent->Param.CC.Value;
                     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  
181    
182              #ifndef CONFIG_OVERRIDE_FILTER_TYPE          // if the selected filter type is an official GigaStudio filter type
183              finalSynthesisParameters.filterLeft.SetType(pDimRgn->VCFType);          // then we preserve the original (no matter how odd) historical GSt
184              finalSynthesisParameters.filterRight.SetType(pDimRgn->VCFType);          // behaviour identically; for our own filter types though we deviate to
185              #else // override filter type          // more meaningful behaviours where appropriate
186              finalSynthesisParameters.filterLeft.SetType(CONFIG_OVERRIDE_FILTER_TYPE);          const bool isGStFilter = isGStFilterType(pRegion->VCFType);
             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;  
187    
188              int cvalue;          if (pRegion->VCFCutoffControllerInvert) ccvalue = 127 - ccvalue;
189              if (VCFCutoffCtrl.controller) {          // interpret "minimum cutoff" not simply as hard limit, rather
190                  cvalue = pEngineChannel->ControllerTable[VCFCutoffCtrl.controller];          // restrain it to min_cutoff..127 range, but spanned / remapped over
191                  if (pDimRgn->VCFCutoffControllerInvert) cvalue = 127 - cvalue;          // the entire controller range (0..127) to avoid a "dead" lower
192                  // VCFVelocityScale in this case means Minimum cutoff          // controller zone (that is to avoid a certain CC value range where
193                  if (cvalue < pDimRgn->VCFVelocityScale) cvalue = pDimRgn->VCFVelocityScale;          // the controller would not change the cutoff frequency)
194              }          ccvalue = MinCutoff() + (ccvalue / 127.f) * float(127 - MinCutoff());
             else {  
                 cvalue = pDimRgn->VCFCutoff;  
             }  
             cutoff *= float(cvalue);  
             if (cutoff > 127.0f) cutoff = 127.0f;  
195    
196              // calculate resonance          float cutoff = CutoffBase * ccvalue;
197              float resonance = (float) (VCFResonanceCtrl.controller ? VCFResonanceCtrl.value : pDimRgn->VCFResonance);          if (cutoff > 127.0f) cutoff = 127.0f;
198    
199              VCFCutoffCtrl.fvalue    = cutoff;          // the filter implementations of the original GSt filter types take an
200              VCFResonanceCtrl.fvalue = resonance;          // abstract cutoff parameter range of 0..127, whereas our own filter
201          }          // types take a cutoff parameter in Hz, so remap here:
202          else {          // 0 .. 127 [lin] -> 21 Hz .. 18 kHz [x^4] (center @2.2 kHz)
203              VCFCutoffCtrl.controller    = 0;          if (!isGStFilter) {
204              VCFResonanceCtrl.controller = 0;              cutoff = (cutoff + 29.f) / (127.f + 29.f);
205          }              cutoff = cutoff * cutoff * cutoff * cutoff * 18000.f;
206                if (cutoff > 0.49f * pEngine->SampleRate)
207          return 0; // success                  cutoff = 0.49f * pEngine->SampleRate;
     }  
   
     /**  
      *  Renders the audio data for this voice for the current audio fragment.  
      *  The sample input data can either come from RAM (cached sample or sample  
      *  part) or directly from disk. The output signal will be rendered by  
      *  resampling / interpolation. If this voice is a disk streaming voice and  
      *  the voice completely played back the cached RAM part of the sample, it  
      *  will automatically switch to disk playback for the next RenderAudio()  
      *  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 = (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);  
             }  
208          }          }
209    
210            fFinalCutoff = VCFCutoffCtrl.fvalue = cutoff;
211      }      }
212    
213      /**      double Voice::CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity) {
214       * Process given list of MIDI control change and pitch bend events for          float crossfadeVolume;
215       * the given time.          switch (pRegion->AttenuationController.type) {
216       *              case ::gig::attenuation_ctrl_t::type_channelaftertouch:
217       * @param itEvent - iterator pointing to the next event to be processed                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[128])];
218       * @param End     - youngest time stamp where processing should be stopped                  break;
219       */              case ::gig::attenuation_ctrl_t::type_velocity:
220      void Voice::processCCEvents(RTList<Event>::Iterator& itEvent, uint End) {                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(MIDIKeyVelocity)];
221          for (; itEvent && itEvent->FragmentPos() <= End; ++itEvent) {                  break;
222              if (itEvent->Type == Event::type_control_change &&              case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate
223                  itEvent->Param.CC.Controller) { // if (valid) MIDI control change event                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[pRegion->AttenuationController.controller_number])];
224                  if (itEvent->Param.CC.Controller == VCFCutoffCtrl.controller) {                  break;
225                      processCutoffEvent(itEvent);              case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined
226                  }              default:
227                  if (itEvent->Param.CC.Controller == VCFResonanceCtrl.controller) {                  crossfadeVolume = 1.0f;
                     processResonanceEvent(itEvent);  
                 }  
                 if (itEvent->Param.CC.Controller == pLFO1->ExtController) {  
                     pLFO1->update(itEvent->Param.CC.Value);  
                 }  
                 if (itEvent->Param.CC.Controller == pLFO2->ExtController) {  
                     pLFO2->update(itEvent->Param.CC.Value);  
                 }  
                 if (itEvent->Param.CC.Controller == pLFO3->ExtController) {  
                     pLFO3->update(itEvent->Param.CC.Value);  
                 }  
                 if (pDimRgn->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&  
                     itEvent->Param.CC.Controller == pDimRgn->AttenuationController.controller_number) {  
                     CrossfadeSmoother.update(Engine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.CC.Value)]);  
                 }  
                 if (itEvent->Param.CC.Controller == 7) { // volume  
                     VolumeSmoother.update(Engine::VolumeCurve[itEvent->Param.CC.Value]);  
                 } else if (itEvent->Param.CC.Controller == 10) { // panpot  
                     PanLeftSmoother.update(Engine::PanCurve[128 - itEvent->Param.CC.Value]);  
                     PanRightSmoother.update(Engine::PanCurve[itEvent->Param.CC.Value]);  
                 }  
             } else if (itEvent->Type == Event::type_pitchbend) { // if pitch bend event  
                 processPitchEvent(itEvent);  
             }  
228          }          }
     }  
229    
230      void Voice::processPitchEvent(RTList<Event>::Iterator& itEvent) {          return crossfadeVolume;
         PitchBend = RTMath::CentsToFreqRatio(itEvent->Param.Pitch.Pitch * PitchBendRange);  
231      }      }
232    
233      void Voice::processCutoffEvent(RTList<Event>::Iterator& itEvent) {      double Voice::GetEG1ControllerValue(uint8_t MIDIKeyVelocity) {
234          int ccvalue = itEvent->Param.CC.Value;          double eg1controllervalue = 0;
235          if (VCFCutoffCtrl.value == ccvalue) return;          switch (pRegion->EG1Controller.type) {
236          VCFCutoffCtrl.value == ccvalue;              case ::gig::eg1_ctrl_t::type_none: // no controller defined
237          if (pDimRgn->VCFCutoffControllerInvert)  ccvalue = 127 - ccvalue;                  eg1controllervalue = 0;
238          if (ccvalue < pDimRgn->VCFVelocityScale) ccvalue = pDimRgn->VCFVelocityScale;                  break;
239          float cutoff = CutoffBase * float(ccvalue);              case ::gig::eg1_ctrl_t::type_channelaftertouch:
240          if (cutoff > 127.0f) cutoff = 127.0f;                  eg1controllervalue = GetGigEngineChannel()->ControllerTable[128];
241                    break;
242                case ::gig::eg1_ctrl_t::type_velocity:
243                    eg1controllervalue = MIDIKeyVelocity;
244                    break;
245                case ::gig::eg1_ctrl_t::type_controlchange: // MIDI control change controller
246                    eg1controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG1Controller.controller_number];
247                    break;
248            }
249            if (pRegion->EG1ControllerInvert) eg1controllervalue = 127 - eg1controllervalue;
250    
251          VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of fFinalCutoff next time          return eg1controllervalue;
         fFinalCutoff = cutoff;  
252      }      }
253    
254      void Voice::processResonanceEvent(RTList<Event>::Iterator& itEvent) {      Voice::EGInfo Voice::CalculateEG1ControllerInfluence(double eg1ControllerValue) {
255          // convert absolute controller value to differential          EGInfo eg;
256          const int ctrldelta = itEvent->Param.CC.Value - VCFResonanceCtrl.value;          // (eg1attack is different from the others)
257          VCFResonanceCtrl.value = itEvent->Param.CC.Value;          if (pRegion->EG1Attack < 1e-8 && // attack in gig == 0
258          const float resonancedelta = (float) ctrldelta;              (pRegion->EG1ControllerAttackInfluence == 0 ||
259          fFinalResonance += resonancedelta;               eg1ControllerValue <= 10)) { // strange GSt special case
260          // needed for initialization of parameter              eg.Attack = 0; // this will force the attack to be 0 in the call to EG1.trigger
261          VCFResonanceCtrl.fvalue = itEvent->Param.CC.Value;          } else {
262      }              eg.Attack  = (pRegion->EG1ControllerAttackInfluence)  ?
263                    1 + 0.031 * (double) (pRegion->EG1ControllerAttackInfluence == 1 ?
264      /**                                        1 : 1 << pRegion->EG1ControllerAttackInfluence) * eg1ControllerValue : 1.0;
265       *  Synthesizes the current audio fragment for this voice.          }
266       *          eg.Decay   = (pRegion->EG1ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerDecayInfluence)   * eg1ControllerValue : 1.0;
267       *  @param Samples - number of sample points to be rendered in this audio          eg.Release = (pRegion->EG1ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerReleaseInfluence) * eg1ControllerValue : 1.0;
268       *                   fragment cycle  
269       *  @param pSrc    - pointer to input sample data          return eg;
270       *  @param Skip    - number of sample points to skip in output buffer      }
271       */  
272      void Voice::Synthesize(uint Samples, sample_t* pSrc, uint Skip) {      double Voice::GetEG2ControllerValue(uint8_t MIDIKeyVelocity) {
273          finalSynthesisParameters.pOutLeft  = &pEngineChannel->pChannelLeft->Buffer()[Skip];          double eg2controllervalue = 0;
274          finalSynthesisParameters.pOutRight = &pEngineChannel->pChannelRight->Buffer()[Skip];          switch (pRegion->EG2Controller.type) {
275          finalSynthesisParameters.pSrc      = pSrc;              case ::gig::eg2_ctrl_t::type_none: // no controller defined
276                    eg2controllervalue = 0;
277          RTList<Event>::Iterator itCCEvent = pEngineChannel->pEvents->first();                  break;
278          RTList<Event>::Iterator itNoteEvent = pEngineChannel->pMIDIKeyInfo[MIDIKey].pEvents->first();              case ::gig::eg2_ctrl_t::type_channelaftertouch:
279                    eg2controllervalue = GetGigEngineChannel()->ControllerTable[128];
280          if (itTriggerEvent) { // skip events that happened before this voice was triggered                  break;
281              while (itCCEvent && itCCEvent->FragmentPos() <= Skip) ++itCCEvent;              case ::gig::eg2_ctrl_t::type_velocity:
282              // we can't simply compare the timestamp here, because note events                  eg2controllervalue = MIDIKeyVelocity;
283              // might happen on the same time stamp, so we have to deal on the                  break;
284              // actual sequence the note events arrived instead (see bug #112)              case ::gig::eg2_ctrl_t::type_controlchange: // MIDI control change controller
285              for (; itNoteEvent; ++itNoteEvent) {                  eg2controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG2Controller.controller_number];
286                  if (itTriggerEvent == itNoteEvent) {                  break;
                     ++itNoteEvent;  
                     break;  
                 }  
             }  
287          }          }
288            if (pRegion->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue;
289    
290          uint killPos;          return eg2controllervalue;
291          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);  
             }  
         }  
292    
293          uint i = Skip;      Voice::EGInfo Voice::CalculateEG2ControllerInfluence(double eg2ControllerValue) {
294          while (i < Samples) {          EGInfo eg;
295              int iSubFragmentEnd = RTMath::Min(i + CONFIG_DEFAULT_SUBFRAGMENT_SIZE, Samples);          eg.Attack  = (pRegion->EG2ControllerAttackInfluence)  ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerAttackInfluence)  * eg2ControllerValue : 1.0;
296            eg.Decay   = (pRegion->EG2ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerDecayInfluence)   * eg2ControllerValue : 1.0;
297              // initialize all final synthesis parameters          eg.Release = (pRegion->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerReleaseInfluence) * eg2ControllerValue : 1.0;
             fFinalCutoff    = VCFCutoffCtrl.fvalue;  
             fFinalResonance = VCFResonanceCtrl.fvalue;  
   
             // process MIDI control change and pitchbend events for this subfragment  
             processCCEvents(itCCEvent, iSubFragmentEnd);  
   
             finalSynthesisParameters.fFinalPitch = PitchBase * PitchBend;  
             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();  
             }  
298    
299              // process envelope generators          return eg;
300              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 *= EG3.render();  
301    
302              // process low frequency oscillators      void Voice::InitLFO1() {
303              if (bLFO1Enabled) fFinalVolume *= (1.0f - pLFO1->render());          uint16_t lfo1_internal_depth;
304              if (bLFO2Enabled) fFinalCutoff *= pLFO2->render();          switch (pRegion->LFO1Controller) {
305              if (bLFO3Enabled) finalSynthesisParameters.fFinalPitch *= RTMath::CentsToFreqRatio(pLFO3->render());              case ::gig::lfo1_ctrl_internal:
306                    lfo1_internal_depth  = pRegion->LFO1InternalDepth;
307              // limit the pitch so we don't read outside the buffer                  pLFO1->ExtController = 0; // no external controller
308              finalSynthesisParameters.fFinalPitch = RTMath::Min(finalSynthesisParameters.fFinalPitch, float(1 << CONFIG_MAX_PITCH));                  bLFO1Enabled         = (lfo1_internal_depth > 0);
309                    break;
310              // if filter enabled then update filter coefficients              case ::gig::lfo1_ctrl_modwheel:
311              if (SYNTHESIS_MODE_GET_FILTER(SynthesisMode)) {                  lfo1_internal_depth  = 0;
312                  finalSynthesisParameters.filterLeft.SetParameters(fFinalCutoff, fFinalResonance, pEngine->SampleRate);                  pLFO1->ExtController = 1; // MIDI controller 1
313                  finalSynthesisParameters.filterRight.SetParameters(fFinalCutoff, fFinalResonance, pEngine->SampleRate);                  bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
314              }                  break;
315                case ::gig::lfo1_ctrl_breath:
316                    lfo1_internal_depth  = 0;
317                    pLFO1->ExtController = 2; // MIDI controller 2
318                    bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
319                    break;
320                case ::gig::lfo1_ctrl_internal_modwheel:
321                    lfo1_internal_depth  = pRegion->LFO1InternalDepth;
322                    pLFO1->ExtController = 1; // MIDI controller 1
323                    bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
324                    break;
325                case ::gig::lfo1_ctrl_internal_breath:
326                    lfo1_internal_depth  = pRegion->LFO1InternalDepth;
327                    pLFO1->ExtController = 2; // MIDI controller 2
328                    bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
329                    break;
330                default:
331                    lfo1_internal_depth  = 0;
332                    pLFO1->ExtController = 0; // no external controller
333                    bLFO1Enabled         = false;
334            }
335            if (bLFO1Enabled) {
336                pLFO1->trigger(fromGigLfoWave(pRegion->LFO1WaveForm),
337                               pRegion->LFO1Frequency,
338                               pRegion->LFO1Phase,
339                               LFO::start_level_mid, // see https://sourceforge.net/p/linuxsampler/mailman/linuxsampler-devel/thread/2189307.cNP0Xbctxq%40silver/#msg36774029
340                               lfo1_internal_depth,
341                               pRegion->LFO1ControlDepth,
342                               pRegion->LFO1FlipPhase,
343                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
344                pLFO1->updateByMIDICtrlValue(pLFO1->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO1->ExtController] : 0);
345                pLFO1->setScriptDepthFactor(
346                    pNote->Override.AmpLFODepth.Value,
347                    pNote->Override.AmpLFODepth.Final
348                );
349                if (pNote->Override.AmpLFOFreq.isFinal())
350                    pLFO1->setScriptFrequencyFinal(
351                        pNote->Override.AmpLFOFreq.Value, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE
352                    );
353                else
354                    pLFO1->setScriptFrequencyFactor(
355                        pNote->Override.AmpLFOFreq.Value, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE
356                    );
357            }
358        }
359    
360              // do we need resampling?      void Voice::InitLFO2() {
361              const float __PLUS_ONE_CENT  = 1.000577789506554859250142541782224725466f;          uint16_t lfo2_internal_depth;
362              const float __MINUS_ONE_CENT = 0.9994225441413807496009516495583113737666f;          switch (pRegion->LFO2Controller) {
363              const bool bResamplingRequired = !(finalSynthesisParameters.fFinalPitch <= __PLUS_ONE_CENT &&              case ::gig::lfo2_ctrl_internal:
364                                                 finalSynthesisParameters.fFinalPitch >= __MINUS_ONE_CENT);                  lfo2_internal_depth  = pRegion->LFO2InternalDepth;
365              SYNTHESIS_MODE_SET_INTERPOLATE(SynthesisMode, bResamplingRequired);                  pLFO2->ExtController = 0; // no external controller
366                    bLFO2Enabled         = (lfo2_internal_depth > 0);
367              // prepare final synthesis parameters structure                  break;
368              finalSynthesisParameters.uiToGo            = iSubFragmentEnd - i;              case ::gig::lfo2_ctrl_modwheel:
369  #ifdef CONFIG_INTERPOLATE_VOLUME                  lfo2_internal_depth  = 0;
370              finalSynthesisParameters.fFinalVolumeDeltaLeft  =                  pLFO2->ExtController = 1; // MIDI controller 1
371                  (fFinalVolume * VolumeLeft  * PanLeftSmoother.render() -                  bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
372                   finalSynthesisParameters.fFinalVolumeLeft) / finalSynthesisParameters.uiToGo;                  break;
373              finalSynthesisParameters.fFinalVolumeDeltaRight =              case ::gig::lfo2_ctrl_foot:
374                  (fFinalVolume * VolumeRight * PanRightSmoother.render() -                  lfo2_internal_depth  = 0;
375                   finalSynthesisParameters.fFinalVolumeRight) / finalSynthesisParameters.uiToGo;                  pLFO2->ExtController = 4; // MIDI controller 4
376  #else                  bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
377              finalSynthesisParameters.fFinalVolumeLeft  =                  break;
378                  fFinalVolume * VolumeLeft  * PanLeftSmoother.render();              case ::gig::lfo2_ctrl_internal_modwheel:
379              finalSynthesisParameters.fFinalVolumeRight =                  lfo2_internal_depth  = pRegion->LFO2InternalDepth;
380                  fFinalVolume * VolumeRight * PanRightSmoother.render();                  pLFO2->ExtController = 1; // MIDI controller 1
381  #endif                  bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
382              // render audio for one subfragment                  break;
383              RunSynthesisFunction(SynthesisMode, &finalSynthesisParameters, &loop);              case ::gig::lfo2_ctrl_internal_foot:
384                    lfo2_internal_depth  = pRegion->LFO2InternalDepth;
385              // stop the rendering if volume EG is finished                  pLFO2->ExtController = 4; // MIDI controller 4
386              if (EG1.getSegmentType() == EGADSR::segment_end) break;                  bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
387                    break;
388              const double newPos = Pos + (iSubFragmentEnd - i) * finalSynthesisParameters.fFinalPitch;              default:
389                    lfo2_internal_depth  = 0;
390              // increment envelopes' positions                  pLFO2->ExtController = 0; // no external controller
391              if (EG1.active()) {                  bLFO2Enabled         = false;
392            }
393                  // 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 (bLFO2Enabled) {
394                  if (pDimRgn->SampleLoops && Pos <= pDimRgn->pSampleLoops[0].LoopStart && pDimRgn->pSampleLoops[0].LoopStart < newPos) {              pLFO2->trigger(fromGigLfoWave(pRegion->LFO2WaveForm),
395                      EG1.update(EGADSR::event_hold_end, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);                             pRegion->LFO2Frequency,
396                  }                             pRegion->LFO2Phase,
397                               LFO::start_level_mid, // see https://sourceforge.net/p/linuxsampler/mailman/linuxsampler-devel/thread/2189307.cNP0Xbctxq%40silver/#msg36774029
398                               lfo2_internal_depth,
399                               pRegion->LFO2ControlDepth,
400                               pRegion->LFO2FlipPhase,
401                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
402                pLFO2->updateByMIDICtrlValue(pLFO2->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO2->ExtController] : 0);
403                pLFO2->setScriptDepthFactor(
404                    pNote->Override.CutoffLFODepth.Value,
405                    pNote->Override.CutoffLFODepth.Final
406                );
407                if (pNote->Override.CutoffLFOFreq.isFinal())
408                    pLFO2->setScriptFrequencyFinal(pNote->Override.CutoffLFOFreq.Value, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
409                else
410                    pLFO2->setScriptFrequencyFactor(pNote->Override.CutoffLFOFreq.Value, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
411            }
412        }
413    
414                  EG1.increment(1);      void Voice::InitLFO3() {
415                  if (!EG1.toStageEndLeft()) EG1.update(EGADSR::event_stage_end, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);          uint16_t lfo3_internal_depth;
416              }          switch (pRegion->LFO3Controller) {
417              if (EG2.active()) {              case ::gig::lfo3_ctrl_internal:
418                  EG2.increment(1);                  lfo3_internal_depth  = pRegion->LFO3InternalDepth;
419                  if (!EG2.toStageEndLeft()) EG2.update(EGADSR::event_stage_end, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);                  pLFO3->ExtController = 0; // no external controller
420              }                  bLFO3Enabled         = (lfo3_internal_depth > 0);
421              EG3.increment(1);                  break;
422              if (!EG3.toEndLeft()) EG3.update(); // neutralize envelope coefficient if end reached              case ::gig::lfo3_ctrl_modwheel:
423                    lfo3_internal_depth  = 0;
424                    pLFO3->ExtController = 1; // MIDI controller 1
425                    bLFO3Enabled         = (pRegion->LFO3ControlDepth > 0);
426                    break;
427                case ::gig::lfo3_ctrl_aftertouch:
428                    lfo3_internal_depth  = 0;
429                    pLFO3->ExtController = CTRL_TABLE_IDX_AFTERTOUCH;
430                    bLFO3Enabled         = true;
431                    break;
432                case ::gig::lfo3_ctrl_internal_modwheel:
433                    lfo3_internal_depth  = pRegion->LFO3InternalDepth;
434                    pLFO3->ExtController = 1; // MIDI controller 1
435                    bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
436                    break;
437                case ::gig::lfo3_ctrl_internal_aftertouch:
438                    lfo3_internal_depth  = pRegion->LFO3InternalDepth;
439                    pLFO3->ExtController = CTRL_TABLE_IDX_AFTERTOUCH;
440                    bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
441                    break;
442                default:
443                    lfo3_internal_depth  = 0;
444                    pLFO3->ExtController = 0; // no external controller
445                    bLFO3Enabled         = false;
446            }
447            if (bLFO3Enabled) {
448                pLFO3->trigger(fromGigLfoWave(pRegion->LFO3WaveForm),
449                               pRegion->LFO3Frequency,
450                               pRegion->LFO3Phase,
451                               LFO::start_level_max, // see https://sourceforge.net/p/linuxsampler/mailman/linuxsampler-devel/thread/2189307.cNP0Xbctxq%40silver/#msg36774029
452                               lfo3_internal_depth,
453                               pRegion->LFO3ControlDepth,
454                               pRegion->LFO3FlipPhase,
455                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
456                pLFO3->updateByMIDICtrlValue(pLFO3->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO3->ExtController] : 0);
457                pLFO3->setScriptDepthFactor(
458                    pNote->Override.PitchLFODepth.Value,
459                    pNote->Override.PitchLFODepth.Final
460                );
461                if (pNote->Override.PitchLFOFreq.isFinal())
462                    pLFO3->setScriptFrequencyFinal(pNote->Override.PitchLFOFreq.Value, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
463                else
464                    pLFO3->setScriptFrequencyFactor(pNote->Override.PitchLFOFreq.Value, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
465            }
466        }
467    
468              Pos = newPos;      float Voice::CalculateCutoffBase(uint8_t MIDIKeyVelocity) {
469              i = iSubFragmentEnd;          float cutoff = pRegion->GetVelocityCutoff(MIDIKeyVelocity);
470            if (pRegion->VCFKeyboardTracking) {
471                cutoff *= RTMath::CentsToFreqRatioUnlimited((MIDIKey() - pRegion->VCFKeyboardTrackingBreakpoint) * 100);
472            }
473            return cutoff;
474        }
475    
476        // This is just called when the voice is triggered. On any subsequent cutoff
477        // controller changes ProcessCutoffEvent() is called instead.
478        float Voice::CalculateFinalCutoff(float cutoffBase) {
479            // if the selected filter type is an official GigaStudio filter type
480            // then we preserve the original (no matter how odd) historical GSt
481            // behaviour identically; for our own filter types though we deviate to
482            // more meaningful behaviours where appropriate
483            const bool isGStFilter = isGStFilterType(pRegion->VCFType);
484    
485            // get current cutoff CC or velocity value (always 0..127)
486            float cvalue;
487            if (VCFCutoffCtrl.controller) {
488                cvalue = GetGigEngineChannel()->ControllerTable[VCFCutoffCtrl.controller];
489                if (pRegion->VCFCutoffControllerInvert) cvalue = 127 - cvalue;
490                if (isGStFilter) {
491                    // VCFVelocityScale in this case means "minimum cutoff" for GSt
492                    if (cvalue < MinCutoff()) cvalue = MinCutoff();
493                } else {
494                    // for our own filter types we interpret "minimum cutoff"
495                    // differently: GSt handles this as a simple hard limit with the
496                    // consequence that a certain range of the controller is simply
497                    // dead; so for our filter types we rather remap that to
498                    // restrain within the min_cutoff..127 range as well, but
499                    // effectively spanned over the entire controller range (0..127)
500                    // to avoid such a "dead" lower controller zone
501                    cvalue = MinCutoff() + (cvalue / 127.f) * float(127 - MinCutoff());
502                }
503            } else {
504                // in case of velocity, VCFVelocityScale parameter is already
505                // handled on libgig side (so by calling
506                // pRegion->GetVelocityCutoff(velo) in CalculateCutoffBase() above)
507                cvalue = pRegion->VCFCutoff;
508            }
509    
510            float fco = cutoffBase * cvalue;
511            if (fco > 127.0f) fco = 127.0f;
512    
513            // the filter implementations of the original GSt filter types take an
514            // abstract cutoff parameter range of 0..127, ...
515            if (isGStFilter)
516                return fco;
517    
518            // ... whereas our own filter types take a cutoff parameter in Hz, so
519            // remap here 0 .. 127 [lin] -> 21 Hz .. 18 kHz [x^4] (center @2.2 kHz)
520            fco = (fco + 29.f) / (127.f + 29.f);
521            fco = fco * fco * fco * fco * 18000.f;
522            if (fco > 0.49f * pEngine->SampleRate)
523                fco = 0.49f * pEngine->SampleRate;
524            return fco;
525        }
526    
527        uint8_t Voice::GetVCFCutoffCtrl() {
528            uint8_t ctrl;
529            switch (pRegion->VCFCutoffController) {
530                case ::gig::vcf_cutoff_ctrl_modwheel:
531                    ctrl = 1;
532                    break;
533                case ::gig::vcf_cutoff_ctrl_effect1:
534                    ctrl = 12;
535                    break;
536                case ::gig::vcf_cutoff_ctrl_effect2:
537                    ctrl = 13;
538                    break;
539                case ::gig::vcf_cutoff_ctrl_breath:
540                    ctrl = 2;
541                    break;
542                case ::gig::vcf_cutoff_ctrl_foot:
543                    ctrl = 4;
544                    break;
545                case ::gig::vcf_cutoff_ctrl_sustainpedal:
546                    ctrl = 64;
547                    break;
548                case ::gig::vcf_cutoff_ctrl_softpedal:
549                    ctrl = 67;
550                    break;
551                case ::gig::vcf_cutoff_ctrl_genpurpose7:
552                    ctrl = 82;
553                    break;
554                case ::gig::vcf_cutoff_ctrl_genpurpose8:
555                    ctrl = 83;
556                    break;
557                case ::gig::vcf_cutoff_ctrl_aftertouch:
558                    ctrl = CTRL_TABLE_IDX_AFTERTOUCH;
559                    break;
560                case ::gig::vcf_cutoff_ctrl_none:
561                default:
562                    ctrl = 0;
563                    break;
564          }          }
565    
566            return ctrl;
567      }      }
568    
569      /** @brief Update current portamento position.      uint8_t Voice::GetVCFResonanceCtrl() {
570       *          uint8_t ctrl;
571       * Will be called when portamento mode is enabled to get the final          switch (pRegion->VCFResonanceController) {
572       * portamento position of this active voice from where the next voice(s)              case ::gig::vcf_res_ctrl_genpurpose3:
573       * might continue to slide on.                  ctrl = 18;
574       *                  break;
575       * @param itNoteOffEvent - event which causes this voice to die soon              case ::gig::vcf_res_ctrl_genpurpose4:
576       */                  ctrl = 19;
577      void Voice::UpdatePortamentoPos(Pool<Event>::Iterator& itNoteOffEvent) {                  break;
578          const float fFinalEG3Level = EG3.level(itNoteOffEvent->FragmentPos());              case ::gig::vcf_res_ctrl_genpurpose5:
579          pEngineChannel->PortamentoPos = (float) MIDIKey + RTMath::FreqRatioToCents(fFinalEG3Level) * 0.01f;                  ctrl = 80;
580      }                  break;
581                case ::gig::vcf_res_ctrl_genpurpose6:
582      /**                  ctrl = 81;
583       *  Immediately kill the voice. This method should not be used to kill                  break;
584       *  a normal, active voice, because it doesn't take care of things like              case ::gig::vcf_res_ctrl_none:
585       *  fading down the volume level to avoid clicks and regular processing              default:
586       *  until the kill event actually occured!                  ctrl = 0;
587       *          }
588       * If it's necessary to know when the voice's disk stream was actually  
589       * deleted, then one can set the optional @a bRequestNotification          return ctrl;
590       * 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  
591    
592          if (itTriggerEvent && itKillEvent->FragmentPos() <= itTriggerEvent->FragmentPos()) return;      void Voice::TriggerEG1(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
593          this->itKillEvent = itKillEvent;          EG1.setStateOptions(
594                pRegion->EG1Options.AttackCancel,
595                pRegion->EG1Options.AttackHoldCancel,
596                pRegion->EG1Options.Decay1Cancel,
597                pRegion->EG1Options.Decay2Cancel,
598                pRegion->EG1Options.ReleaseCancel
599            );
600            EG1.trigger(pRegion->EG1PreAttack,
601                        (pNote && pNote->Override.Attack.isFinal()) ?
602                            pNote->Override.Attack.Value :
603                            RTMath::Max(pRegion->EG1Attack, 0.0316) * egInfo.Attack,
604                        pRegion->EG1Hold,
605                        (pNote && pNote->Override.Decay.isFinal()) ?
606                            pNote->Override.Decay.Value :
607                            pRegion->EG1Decay1 * egInfo.Decay * velrelease,
608                        (pNote && pNote->Override.Decay.isFinal()) ?
609                            pNote->Override.Decay.Value :
610                            pRegion->EG1Decay2 * egInfo.Decay * velrelease,
611                        pRegion->EG1InfiniteSustain,
612                        (pNote && pNote->Override.Sustain.Final) ?
613                            uint(pNote->Override.Sustain.Value * 1000.f) :
614                            pRegion->EG1Sustain * (pNote ? pNote->Override.Sustain.Value : 1.f),
615                        (pNote && pNote->Override.Release.isFinal()) ?
616                            pNote->Override.Release.Value :
617                            RTMath::Max(pRegion->EG1Release * velrelease, 0.014) * egInfo.Release,
618                        velocityAttenuation,
619                        sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
620        }
621    
622        void Voice::TriggerEG2(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
623            EG2.setStateOptions(
624                pRegion->EG2Options.AttackCancel,
625                pRegion->EG2Options.AttackHoldCancel,
626                pRegion->EG2Options.Decay1Cancel,
627                pRegion->EG2Options.Decay2Cancel,
628                pRegion->EG2Options.ReleaseCancel
629            );
630            EG2.trigger(uint(RgnInfo.EG2PreAttack),
631                        (pNote && pNote->Override.CutoffAttack.isFinal()) ?
632                            pNote->Override.CutoffAttack.Value :
633                            RgnInfo.EG2Attack * egInfo.Attack,
634                        false,
635                        (pNote && pNote->Override.CutoffDecay.isFinal()) ?
636                            pNote->Override.CutoffDecay.Value :
637                            RgnInfo.EG2Decay1 * egInfo.Decay * velrelease,
638                        (pNote && pNote->Override.CutoffDecay.isFinal()) ?
639                            pNote->Override.CutoffDecay.Value :
640                            RgnInfo.EG2Decay2 * egInfo.Decay * velrelease,
641                        RgnInfo.EG2InfiniteSustain,
642                        (pNote && pNote->Override.CutoffSustain.Final) ?
643                            uint(pNote->Override.CutoffSustain.Value * 1000.f) :
644                            uint(RgnInfo.EG2Sustain),
645                        (pNote && pNote->Override.CutoffRelease.isFinal()) ?
646                            pNote->Override.CutoffRelease.Value :
647                            RgnInfo.EG2Release * egInfo.Release * velrelease,
648                        velocityAttenuation,
649                        sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
650        }
651    
652        void Voice::ProcessGroupEvent(RTList<Event>::Iterator& itEvent) {
653            dmsg(4,("Voice %p processGroupEvents event type=%d", (void*)this, itEvent->Type));
654    
655            // TODO: The SustainPedal condition could be wrong, maybe the
656            // check should be if this Voice is in release stage or is a
657            // release sample instead. Need to test this in GSt.
658            // -- Andreas
659            //
660            // Commented sustain pedal check out. I don't think voices of the same
661            // note should be stopped at all, because it doesn't sound naturally
662            // with a drumkit.
663            // -- Christian, 2013-01-08
664            if (itEvent->Param.Note.Key != HostKey() /*||
665                !GetGigEngineChannel()->SustainPedal*/) {
666                dmsg(4,("Voice %p - kill", (void*)this));
667    
668                // kill the voice fast
669                pEG1->enterFadeOutStage();
670            }
671        }
672    
673        void Voice::CalculateFadeOutCoeff(float FadeOutTime, float SampleRate) {
674            EG1.CalculateFadeOutCoeff(FadeOutTime, SampleRate);
675        }
676    
677        int Voice::CalculatePan(uint8_t pan) {
678            int p;
679            // Gst behaviour: -64 and 63 are special cases
680            if (RgnInfo.Pan == -64)     p = pan * 2 - 127;
681            else if (RgnInfo.Pan == 63) p = pan * 2;
682            else                        p = pan + RgnInfo.Pan;
683    
684            if (p < 0) return 0;
685            if (p > 127) return 127;
686            return p;
687        }
688    
689        release_trigger_t Voice::GetReleaseTriggerFlags() {
690            release_trigger_t flags =
691                (pRegion->NoNoteOffReleaseTrigger) ?
692                    release_trigger_none : release_trigger_noteoff; //HACK: currently this method is actually only called by EngineBase if it already knows that this voice requires release trigger, so I took the short way instead of checking (again) the existence of a ::gig::dimension_releasetrigger
693            switch (pRegion->SustainReleaseTrigger) {
694                case ::gig::sust_rel_trg_none:
695                    break;
696                case ::gig::sust_rel_trg_maxvelocity:
697                    flags |= release_trigger_sustain_maxvelocity;
698                    break;
699                case ::gig::sust_rel_trg_keyvelocity:
700                    flags |= release_trigger_sustain_keyvelocity;
701                    break;
702            }
703            return flags;
704      }      }
705    
706  }} // namespace LinuxSampler::gig  }} // namespace LinuxSampler::gig
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