/[svn]/linuxsampler/trunk/src/engines/gig/Voice.cpp
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revision 877 by persson, Sun Jun 25 13:54:17 2006 UTC revision 3655 by schoenebeck, Fri Dec 13 17:14:48 2019 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, 2006 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 24  Line 26 
26  #include "../../common/Features.h"  #include "../../common/Features.h"
27  #include "Synthesizer.h"  #include "Synthesizer.h"
28  #include "Profiler.h"  #include "Profiler.h"
29    #include "Engine.h"
30    #include "EngineChannel.h"
31    
32  #include "Voice.h"  #include "Voice.h"
33    
34  namespace LinuxSampler { namespace gig {  namespace LinuxSampler { namespace gig {
35    
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 (currently either pure C++ or MMX+SSE(1))  
46          #if 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() {
         if (pLFO1) delete pLFO1;  
         if (pLFO2) delete pLFO2;  
         if (pLFO3) delete pLFO3;  
70      }      }
71    
72      void Voice::SetEngine(Engine* pEngine) {      EngineChannel* Voice::GetGigEngineChannel() {
73          this->pEngine     = pEngine;          return static_cast<EngineChannel*>(pEngineChannel);
74          this->pDiskThread = pEngine->pDiskThread;      }
75    
76        void Voice::SetEngine(LinuxSampler::Engine* pEngine) {
77            Engine* engine = static_cast<Engine*>(pEngine);
78            this->pEngine     = engine;
79            this->pDiskThread = engine->pDiskThread;
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;  
   
         #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);  
   
         float volume = velocityAttenuation / 32768.0f; // we downscale by 32768 to convert from int16 value range to DSP value range (which is -1.0..1.0)  
   
         volume *= pDimRgn->SampleAttenuation;  
   
         // the volume of release triggered samples depends on note length  
         if (Type == type_release_trigger) {  
             float noteLength = float(pEngine->FrameTime + Delay -  
                                      pEngineChannel->pMIDIKeyInfo[MIDIKey].NoteOnTime) / pEngine->SampleRate;  
             float attenuation = 1 - 0.01053 * (256 >> pDimRgn->ReleaseTriggerDecay) * noteLength;  
             if (attenuation <= 0) return -1;  
             volume *= attenuation;  
         }  
90    
91          // select channel mode (mono or stereo)          si.HasLoops       = pRegion->SampleLoops;
92          SYNTHESIS_MODE_SET_CHANNELS(SynthesisMode, pSample->Channels == 2);          si.LoopStart      = (si.HasLoops) ? pRegion->pSampleLoops[0].LoopStart  : 0;
93            si.LoopLength     = (si.HasLoops) ? pRegion->pSampleLoops[0].LoopLength : 0;
94            si.LoopPlayCount  = pSample->LoopPlayCount;
95            si.Unpitched      = !pRegion->PitchTrack;
96    
97          // get starting crossfade volume level          return si;
98          float crossfadeVolume;      }
         switch (pDimRgn->AttenuationController.type) {  
             case ::gig::attenuation_ctrl_t::type_channelaftertouch:  
                 crossfadeVolume = 1.0f; //TODO: aftertouch not supported yet  
                 break;  
             case ::gig::attenuation_ctrl_t::type_velocity:  
                 crossfadeVolume = 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->GlobalVolume, 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  
             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];  
             if (pDimRgn->PitchTrack) pitchbasecents += (MIDIKey - (int) pDimRgn->UnityNote) * 100;  
             this->PitchBase = RTMath::CentsToFreqRatio(pitchbasecents) * (double(pSample->SamplesPerSecond) / double(pEngine->SampleRate));  
             this->PitchBend = RTMath::CentsToFreqRatio(((double) PitchBend / 8192.0) * 200.0); // pitchbend wheel +-2 semitones = 200 cents  
         }  
   
         // the length of the decay and release curves are dependent on the velocity  
         const double velrelease = 1 / pDimRgn->GetVelocityRelease(itNoteOnEvent->Param.Note.Velocity);  
   
         // setup EG 1 (VCA EG)  
         {  
             // get current value of EG1 controller  
             double eg1controllervalue;  
             switch (pDimRgn->EG1Controller.type) {  
                 case ::gig::eg1_ctrl_t::type_none: // no controller defined  
                     eg1controllervalue = 0;  
                     break;  
                 case ::gig::eg1_ctrl_t::type_channelaftertouch:  
                     eg1controllervalue = 0; // TODO: aftertouch not yet supported  
                     break;  
                 case ::gig::eg1_ctrl_t::type_velocity:  
                     eg1controllervalue = itNoteOnEvent->Param.Note.Velocity;  
                     break;  
                 case ::gig::eg1_ctrl_t::type_controlchange: // MIDI control change controller  
                     eg1controllervalue = pEngineChannel->ControllerTable[pDimRgn->EG1Controller.controller_number];  
                     break;  
             }  
             if (pDimRgn->EG1ControllerInvert) eg1controllervalue = 127 - eg1controllervalue;  
114    
115              // calculate influence of EG1 controller on EG1's parameters          ri.EG3Attack     = pRegion->EG3Attack;
116              // (eg1attack is different from the others)          ri.EG3Depth      = pRegion->EG3Depth;
117              double eg1attack  = (pDimRgn->EG1ControllerAttackInfluence)  ?          ri.VCFEnabled    = pRegion->VCFEnabled;
118                  1 + 0.031 * (double) (pDimRgn->EG1ControllerAttackInfluence == 1 ?          ri.VCFType       = Filter::vcf_type_t(pRegion->VCFType);
119                                        1 : 1 << pDimRgn->EG1ControllerAttackInfluence) * eg1controllervalue : 1.0;          ri.VCFResonance  = pRegion->VCFResonance;
             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->GlobalVolume * 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 = 0; // TODO: aftertouch not yet supported  
                     break;  
                 case ::gig::eg2_ctrl_t::type_velocity:  
                     eg2controllervalue = itNoteOnEvent->Param.Note.Velocity;  
                     break;  
                 case ::gig::eg2_ctrl_t::type_controlchange: // MIDI control change controller  
                     eg2controllervalue = pEngineChannel->ControllerTable[pDimRgn->EG2Controller.controller_number];  
                     break;  
             }  
             if (pDimRgn->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue;  
120    
121              // calculate influence of EG2 controller on EG2's parameters          ri.ReleaseTriggerDecay = 0.01053 * (256 >> pRegion->ReleaseTriggerDecay);
             double eg2attack  = (pDimRgn->EG2ControllerAttackInfluence)  ? 1 + 0.00775 * (double) (1 << pDimRgn->EG2ControllerAttackInfluence)  * eg2controllervalue : 1.0;  
             double eg2decay   = (pDimRgn->EG2ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pDimRgn->EG2ControllerDecayInfluence)   * eg2controllervalue : 1.0;  
             double eg2release = (pDimRgn->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pDimRgn->EG2ControllerReleaseInfluence) * eg2controllervalue : 1.0;  
   
             EG2.trigger(pDimRgn->EG2PreAttack,  
                         pDimRgn->EG2Attack * eg2attack,  
                         false,  
                         pDimRgn->EG2Decay1 * eg2decay * velrelease,  
                         pDimRgn->EG2Decay2 * eg2decay * velrelease,  
                         pDimRgn->EG2InfiniteSustain,  
                         pDimRgn->EG2Sustain,  
                         pDimRgn->EG2Release * eg2release * velrelease,  
                         velocityAttenuation,  
                         pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
         }  
   
   
         // 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_max,  
                                lfo1_internal_depth,  
                                pDimRgn->LFO1ControlDepth,  
                                pDimRgn->LFO1FlipPhase,  
                                pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
                 pLFO1->update(pLFO1->ExtController ? pEngineChannel->ControllerTable[pLFO1->ExtController] : 0);  
             }  
         }  
122    
123            return ri;
124        }
125    
126          // setup LFO 2 (VCF Cutoff LFO)      Voice::InstrumentInfo Voice::GetInstrumentInfo() {
127          {          InstrumentInfo ii;
128              uint16_t lfo2_internal_depth;          ii.FineTune = GetGigEngineChannel()->pInstrument->FineTune;
129              switch (pDimRgn->LFO2Controller) {          ii.PitchbendRange = GetGigEngineChannel()->pInstrument->PitchbendRange;
                 case ::gig::lfo2_ctrl_internal:  
                     lfo2_internal_depth  = pDimRgn->LFO2InternalDepth;  
                     pLFO2->ExtController = 0; // no external controller  
                     bLFO2Enabled         = (lfo2_internal_depth > 0);  
                     break;  
                 case ::gig::lfo2_ctrl_modwheel:  
                     lfo2_internal_depth  = 0;  
                     pLFO2->ExtController = 1; // MIDI controller 1  
                     bLFO2Enabled         = (pDimRgn->LFO2ControlDepth > 0);  
                     break;  
                 case ::gig::lfo2_ctrl_foot:  
                     lfo2_internal_depth  = 0;  
                     pLFO2->ExtController = 4; // MIDI controller 4  
                     bLFO2Enabled         = (pDimRgn->LFO2ControlDepth > 0);  
                     break;  
                 case ::gig::lfo2_ctrl_internal_modwheel:  
                     lfo2_internal_depth  = pDimRgn->LFO2InternalDepth;  
                     pLFO2->ExtController = 1; // MIDI controller 1  
                     bLFO2Enabled         = (lfo2_internal_depth > 0 || pDimRgn->LFO2ControlDepth > 0);  
                     break;  
                 case ::gig::lfo2_ctrl_internal_foot:  
                     lfo2_internal_depth  = pDimRgn->LFO2InternalDepth;  
                     pLFO2->ExtController = 4; // MIDI controller 4  
                     bLFO2Enabled         = (lfo2_internal_depth > 0 || pDimRgn->LFO2ControlDepth > 0);  
                     break;  
                 default:  
                     lfo2_internal_depth  = 0;  
                     pLFO2->ExtController = 0; // no external controller  
                     bLFO2Enabled         = false;  
             }  
             if (bLFO2Enabled) {  
                 pLFO2->trigger(pDimRgn->LFO2Frequency,  
                                start_level_max,  
                                lfo2_internal_depth,  
                                pDimRgn->LFO2ControlDepth,  
                                pDimRgn->LFO2FlipPhase,  
                                pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
                 pLFO2->update(pLFO2->ExtController ? pEngineChannel->ControllerTable[pLFO2->ExtController] : 0);  
             }  
         }  
130    
131            return ii;
132        }
133    
134          // setup LFO 3 (VCO LFO)      double Voice::GetSampleAttenuation() {
135          {          return pRegion->SampleAttenuation;
136              uint16_t lfo3_internal_depth;      }
             switch (pDimRgn->LFO3Controller) {  
                 case ::gig::lfo3_ctrl_internal:  
                     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 = 0; // TODO: aftertouch not implemented yet  
                     bLFO3Enabled         = false; // see TODO comment in line above  
                     break;  
                 case ::gig::lfo3_ctrl_internal_modwheel:  
                     lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;  
                     pLFO3->ExtController = 1; // MIDI controller 1  
                     bLFO3Enabled         = (lfo3_internal_depth > 0 || pDimRgn->LFO3ControlDepth > 0);  
                     break;  
                 case ::gig::lfo3_ctrl_internal_aftertouch:  
                     lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;  
                     pLFO1->ExtController = 0; // TODO: aftertouch not implemented yet  
                     bLFO3Enabled         = (lfo3_internal_depth > 0 /*|| pDimRgn->LFO3ControlDepth > 0*/); // see TODO comment in line above  
                     break;  
                 default:  
                     lfo3_internal_depth  = 0;  
                     pLFO3->ExtController = 0; // no external controller  
                     bLFO3Enabled         = false;  
             }  
             if (bLFO3Enabled) {  
                 pLFO3->trigger(pDimRgn->LFO3Frequency,  
                                start_level_mid,  
                                lfo3_internal_depth,  
                                pDimRgn->LFO3ControlDepth,  
                                false,  
                                pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
                 pLFO3->update(pLFO3->ExtController ? pEngineChannel->ControllerTable[pLFO3->ExtController] : 0);  
             }  
         }  
137    
138        double Voice::GetVelocityAttenuation(uint8_t MIDIKeyVelocity) {
139            return pRegion->GetVelocityAttenuation(MIDIKeyVelocity);
140        }
141    
142          #if CONFIG_FORCE_FILTER      double Voice::GetVelocityRelease(uint8_t MIDIKeyVelocity) {
143          const bool bUseFilter = true;          return pRegion->GetVelocityRelease(MIDIKeyVelocity);
144          #else // use filter only if instrument file told so      }
         const bool bUseFilter = pDimRgn->VCFEnabled;  
         #endif // CONFIG_FORCE_FILTER  
         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: //TODO: not implemented yet  
                 case ::gig::vcf_cutoff_ctrl_none:  
                 default:  
                     VCFCutoffCtrl.controller = 0;  
                     break;  
             }  
             #endif // CONFIG_OVERRIDE_CUTOFF_CTRL  
145    
146              #ifdef CONFIG_OVERRIDE_RESONANCE_CTRL      void Voice::ProcessCCEvent(RTList<Event>::Iterator& itEvent) {
147              VCFResonanceCtrl.controller = CONFIG_OVERRIDE_RESONANCE_CTRL;          if (itEvent->Type == Event::type_control_change && itEvent->Param.CC.Controller) { // if (valid) MIDI control change event
148              #else // use the one defined in the instrument file              if (pRegion->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&
149              switch (pDimRgn->VCFResonanceController) {                  itEvent->Param.CC.Controller == pRegion->AttenuationController.controller_number) {
150                  case ::gig::vcf_res_ctrl_genpurpose3:                  CrossfadeSmoother.update(AbstractEngine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.CC.Value)]);
                     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;  
151              }              }
152              #endif // CONFIG_OVERRIDE_RESONANCE_CTRL          }
153        }
154    
155              #ifndef CONFIG_OVERRIDE_FILTER_TYPE      void Voice::ProcessChannelPressureEvent(RTList<Event>::Iterator& itEvent) {
156              finalSynthesisParameters.filterLeft.SetType(pDimRgn->VCFType);          if (itEvent->Type == Event::type_channel_pressure) { // if (valid) MIDI channel pressure (aftertouch) event
157              finalSynthesisParameters.filterRight.SetType(pDimRgn->VCFType);              if (pRegion->AttenuationController.type == ::gig::attenuation_ctrl_t::type_channelaftertouch) {
158              #else // override filter type                  CrossfadeSmoother.update(AbstractEngine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.ChannelPressure.Value)]);
             FilterLeft.SetType(CONFIG_OVERRIDE_FILTER_TYPE);  
             FilterRight.SetType(CONFIG_OVERRIDE_FILTER_TYPE);  
             #endif // CONFIG_OVERRIDE_FILTER_TYPE  
   
             VCFCutoffCtrl.value    = pEngineChannel->ControllerTable[VCFCutoffCtrl.controller];  
             VCFResonanceCtrl.value = pEngineChannel->ControllerTable[VCFResonanceCtrl.controller];  
   
             // calculate cutoff frequency  
             float cutoff = pDimRgn->GetVelocityCutoff(itNoteOnEvent->Param.Note.Velocity);  
             if (pDimRgn->VCFKeyboardTracking) {  
                 cutoff *= exp((itNoteOnEvent->Param.Note.Key - pDimRgn->VCFKeyboardTrackingBreakpoint) * 0.057762265f); // (ln(2) / 12)  
159              }              }
160              CutoffBase = cutoff;          }
161        }
162    
163              int cvalue;      void Voice::ProcessPolyphonicKeyPressureEvent(RTList<Event>::Iterator& itEvent) {
164              if (VCFCutoffCtrl.controller) {          // Not used so far
165                  cvalue = pEngineChannel->ControllerTable[VCFCutoffCtrl.controller];      }
166                  if (pDimRgn->VCFCutoffControllerInvert) cvalue = 127 - cvalue;  
167                  // VCFVelocityScale in this case means Minimum cutoff      uint8_t Voice::MinCutoff() const {
168                  if (cvalue < pDimRgn->VCFVelocityScale) cvalue = pDimRgn->VCFVelocityScale;          // If there's a cutoff controller defined then VCFVelocityScale means
169              }          // "minimum cutoff". If there is no MIDI controller defined for cutoff
170              else {          // then VCFVelocityScale is already taken into account on libgig side
171                  cvalue = pDimRgn->VCFCutoff;          // instead by call to pRegion->GetVelocityCutoff(MIDIKeyVelocity).
172              }          return pRegion->VCFVelocityScale;
173              cutoff *= float(cvalue);      }
             if (cutoff > 127.0f) cutoff = 127.0f;  
174    
175              // calculate resonance      // This is called on any cutoff controller changes, however not when the
176              float resonance = (float) (VCFResonanceCtrl.controller ? VCFResonanceCtrl.value : pDimRgn->VCFResonance);      // voice is triggered. So the initial cutoff value is retrieved by a call
177        // to CalculateFinalCutoff() instead.
178        void Voice::ProcessCutoffEvent(RTList<Event>::Iterator& itEvent) {
179            if (VCFCutoffCtrl.value == itEvent->Param.CC.Value) return;
180            float ccvalue = VCFCutoffCtrl.value = itEvent->Param.CC.Value;
181    
182              VCFCutoffCtrl.fvalue    = cutoff;          // if the selected filter type is an official GigaStudio filter type
183              VCFResonanceCtrl.fvalue = resonance;          // then we preserve the original (no matter how odd) historical GSt
184            // behaviour identically; for our own filter types though we deviate to
185            // more meaningful behaviours where appropriate
186            const bool isGStFilter = isGStFilterType(pRegion->VCFType);
187    
188            if (pRegion->VCFCutoffControllerInvert) ccvalue = 127 - ccvalue;
189            if (isGStFilter) {
190                // VCFVelocityScale in this case means "minimum cutoff" for GSt
191                if (ccvalue < MinCutoff()) ccvalue = MinCutoff();
192            } else {
193                // for our own filter types we interpret "minimum cutoff"
194                // differently: GSt handles this as a simple hard limit with the
195                // consequence that a certain range of the controller is simply
196                // dead; so for our filter types we rather remap that to
197                // restrain within the min_cutoff..127 range as well, but
198                // effectively spanned over the entire controller range (0..127)
199                // to avoid such a "dead" lower controller zone
200                ccvalue = MinCutoff() + (ccvalue / 127.f) * float(127 - MinCutoff());
201          }          }
202          else {  
203              VCFCutoffCtrl.controller    = 0;          float cutoff = CutoffBase * ccvalue;
204              VCFResonanceCtrl.controller = 0;          if (cutoff > 127.0f) cutoff = 127.0f;
205          }  
206            // the filter implementations of the original GSt filter types take an
207          return 0; // success          // abstract cutoff parameter range of 0..127, whereas our own filter
208      }          // types take a cutoff parameter in Hz, so remap here:
209            // 0 .. 127 [lin] -> 21 Hz .. 18 kHz [x^4] (center @2.2 kHz)
210      /**          if (!isGStFilter) {
211       *  Renders the audio data for this voice for the current audio fragment.              cutoff = (cutoff + 29.f) / (127.f + 29.f);
212       *  The sample input data can either come from RAM (cached sample or sample              cutoff = cutoff * cutoff * cutoff * cutoff * 18000.f;
213       *  part) or directly from disk. The output signal will be rendered by              if (cutoff > 0.49f * pEngine->SampleRate)
214       *  resampling / interpolation. If this voice is a disk streaming voice and                  cutoff = 0.49f * pEngine->SampleRate;
      *  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 = 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);  
             }  
215          }          }
216    
217            fFinalCutoff = VCFCutoffCtrl.fvalue = cutoff;
218      }      }
219    
220      /**      double Voice::CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity) {
221       * Process given list of MIDI control change and pitch bend events for          float crossfadeVolume;
222       * the given time.          switch (pRegion->AttenuationController.type) {
223       *              case ::gig::attenuation_ctrl_t::type_channelaftertouch:
224       * @param itEvent - iterator pointing to the next event to be processed                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[128])];
225       * @param End     - youngest time stamp where processing should be stopped                  break;
226       */              case ::gig::attenuation_ctrl_t::type_velocity:
227      void Voice::processCCEvents(RTList<Event>::Iterator& itEvent, uint End) {                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(MIDIKeyVelocity)];
228          for (; itEvent && itEvent->FragmentPos() <= End; ++itEvent) {                  break;
229              if (itEvent->Type == Event::type_control_change &&              case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate
230                  itEvent->Param.CC.Controller) { // if (valid) MIDI control change event                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[pRegion->AttenuationController.controller_number])];
231                  if (itEvent->Param.CC.Controller == VCFCutoffCtrl.controller) {                  break;
232                      processCutoffEvent(itEvent);              case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined
233                  }              default:
234                  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] * CONFIG_GLOBAL_ATTENUATION);  
                 } 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);  
             }  
235          }          }
     }  
236    
237      void Voice::processPitchEvent(RTList<Event>::Iterator& itEvent) {          return crossfadeVolume;
         const float pitch = RTMath::CentsToFreqRatio(((double) itEvent->Param.Pitch.Pitch / 8192.0) * 200.0); // +-two semitones = +-200 cents  
         finalSynthesisParameters.fFinalPitch *= pitch;  
         PitchBend = pitch;  
238      }      }
239    
240      void Voice::processCutoffEvent(RTList<Event>::Iterator& itEvent) {      double Voice::GetEG1ControllerValue(uint8_t MIDIKeyVelocity) {
241          int ccvalue = itEvent->Param.CC.Value;          double eg1controllervalue = 0;
242          if (VCFCutoffCtrl.value == ccvalue) return;          switch (pRegion->EG1Controller.type) {
243          VCFCutoffCtrl.value == ccvalue;              case ::gig::eg1_ctrl_t::type_none: // no controller defined
244          if (pDimRgn->VCFCutoffControllerInvert)  ccvalue = 127 - ccvalue;                  eg1controllervalue = 0;
245          if (ccvalue < pDimRgn->VCFVelocityScale) ccvalue = pDimRgn->VCFVelocityScale;                  break;
246          float cutoff = CutoffBase * float(ccvalue);              case ::gig::eg1_ctrl_t::type_channelaftertouch:
247          if (cutoff > 127.0f) cutoff = 127.0f;                  eg1controllervalue = GetGigEngineChannel()->ControllerTable[128];
248                    break;
249                case ::gig::eg1_ctrl_t::type_velocity:
250                    eg1controllervalue = MIDIKeyVelocity;
251                    break;
252                case ::gig::eg1_ctrl_t::type_controlchange: // MIDI control change controller
253                    eg1controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG1Controller.controller_number];
254                    break;
255            }
256            if (pRegion->EG1ControllerInvert) eg1controllervalue = 127 - eg1controllervalue;
257    
258          VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of fFinalCutoff next time          return eg1controllervalue;
         fFinalCutoff = cutoff;  
259      }      }
260    
261      void Voice::processResonanceEvent(RTList<Event>::Iterator& itEvent) {      Voice::EGInfo Voice::CalculateEG1ControllerInfluence(double eg1ControllerValue) {
262          // convert absolute controller value to differential          EGInfo eg;
263          const int ctrldelta = itEvent->Param.CC.Value - VCFResonanceCtrl.value;          // (eg1attack is different from the others)
264          VCFResonanceCtrl.value = itEvent->Param.CC.Value;          if (pRegion->EG1Attack < 1e-8 && // attack in gig == 0
265          const float resonancedelta = (float) ctrldelta;              (pRegion->EG1ControllerAttackInfluence == 0 ||
266          fFinalResonance += resonancedelta;               eg1ControllerValue <= 10)) { // strange GSt special case
267          // needed for initialization of parameter              eg.Attack = 0; // this will force the attack to be 0 in the call to EG1.trigger
268          VCFResonanceCtrl.fvalue = itEvent->Param.CC.Value;          } else {
269      }              eg.Attack  = (pRegion->EG1ControllerAttackInfluence)  ?
270                    1 + 0.031 * (double) (pRegion->EG1ControllerAttackInfluence == 1 ?
271      /**                                        1 : 1 << pRegion->EG1ControllerAttackInfluence) * eg1ControllerValue : 1.0;
272       *  Synthesizes the current audio fragment for this voice.          }
273       *          eg.Decay   = (pRegion->EG1ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerDecayInfluence)   * eg1ControllerValue : 1.0;
274       *  @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;
275       *                   fragment cycle  
276       *  @param pSrc    - pointer to input sample data          return eg;
277       *  @param Skip    - number of sample points to skip in output buffer      }
278       */  
279      void Voice::Synthesize(uint Samples, sample_t* pSrc, uint Skip) {      double Voice::GetEG2ControllerValue(uint8_t MIDIKeyVelocity) {
280          finalSynthesisParameters.pOutLeft  = &pEngineChannel->pOutputLeft[Skip];          double eg2controllervalue = 0;
281          finalSynthesisParameters.pOutRight = &pEngineChannel->pOutputRight[Skip];          switch (pRegion->EG2Controller.type) {
282          finalSynthesisParameters.pSrc      = pSrc;              case ::gig::eg2_ctrl_t::type_none: // no controller defined
283                    eg2controllervalue = 0;
284          RTList<Event>::Iterator itCCEvent = pEngineChannel->pEvents->first();                  break;
285          RTList<Event>::Iterator itNoteEvent = pEngineChannel->pMIDIKeyInfo[MIDIKey].pEvents->first();              case ::gig::eg2_ctrl_t::type_channelaftertouch:
286                    eg2controllervalue = GetGigEngineChannel()->ControllerTable[128];
287          if (Skip) { // skip events that happened before this voice was triggered                  break;
288              while (itCCEvent && itCCEvent->FragmentPos() <= Skip) ++itCCEvent;              case ::gig::eg2_ctrl_t::type_velocity:
289              while (itNoteEvent && itNoteEvent->FragmentPos() <= Skip) ++itNoteEvent;                  eg2controllervalue = MIDIKeyVelocity;
290          }                  break;
291                case ::gig::eg2_ctrl_t::type_controlchange: // MIDI control change controller
292          uint killPos;                  eg2controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG2Controller.controller_number];
293          if (itKillEvent) killPos = RTMath::Min(itKillEvent->FragmentPos(), pEngine->MaxFadeOutPos);                  break;
294            }
295          uint i = Skip;          if (pRegion->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue;
         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 switch EG1 to fade out stage  
             if (itKillEvent && killPos <= iSubFragmentEnd) {  
                 EG1.enterFadeOutStage();  
                 itKillEvent = Pool<Event>::Iterator();  
             }  
296    
297              // process envelope generators          return eg2controllervalue;
298              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();  
299    
300              // process low frequency oscillators      Voice::EGInfo Voice::CalculateEG2ControllerInfluence(double eg2ControllerValue) {
301              if (bLFO1Enabled) fFinalVolume *= pLFO1->render();          EGInfo eg;
302              if (bLFO2Enabled) fFinalCutoff *= pLFO2->render();          eg.Attack  = (pRegion->EG2ControllerAttackInfluence)  ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerAttackInfluence)  * eg2ControllerValue : 1.0;
303              if (bLFO3Enabled) finalSynthesisParameters.fFinalPitch *= RTMath::CentsToFreqRatio(pLFO3->render());          eg.Decay   = (pRegion->EG2ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerDecayInfluence)   * eg2ControllerValue : 1.0;
304            eg.Release = (pRegion->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerReleaseInfluence) * eg2ControllerValue : 1.0;
             // if filter enabled then update filter coefficients  
             if (SYNTHESIS_MODE_GET_FILTER(SynthesisMode)) {  
                 finalSynthesisParameters.filterLeft.SetParameters(fFinalCutoff, fFinalResonance, pEngine->SampleRate);  
                 finalSynthesisParameters.filterRight.SetParameters(fFinalCutoff, fFinalResonance, pEngine->SampleRate);  
             }  
305    
306              // do we need resampling?          return eg;
307              const float __PLUS_ONE_CENT  = 1.000577789506554859250142541782224725466f;      }
             const float __MINUS_ONE_CENT = 0.9994225441413807496009516495583113737666f;  
             const bool bResamplingRequired = !(finalSynthesisParameters.fFinalPitch <= __PLUS_ONE_CENT &&  
                                                finalSynthesisParameters.fFinalPitch >= __MINUS_ONE_CENT);  
             SYNTHESIS_MODE_SET_INTERPOLATE(SynthesisMode, bResamplingRequired);  
   
             // prepare final synthesis parameters structure  
             finalSynthesisParameters.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);  
                 }  
308    
309                  EG1.increment(1);      void Voice::InitLFO1() {
310                  if (!EG1.toStageEndLeft()) EG1.update(EGADSR::event_stage_end, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);          uint16_t lfo1_internal_depth;
311              }          switch (pRegion->LFO1Controller) {
312              if (EG2.active()) {              case ::gig::lfo1_ctrl_internal:
313                  EG2.increment(1);                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
314                  if (!EG2.toStageEndLeft()) EG2.update(EGADSR::event_stage_end, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);                  pLFO1->ExtController = 0; // no external controller
315              }                  bLFO1Enabled         = (lfo1_internal_depth > 0);
316              EG3.increment(1);                  break;
317              if (!EG3.toEndLeft()) EG3.update(); // neutralize envelope coefficient if end reached              case ::gig::lfo1_ctrl_modwheel:
318                    lfo1_internal_depth  = 0;
319                    pLFO1->ExtController = 1; // MIDI controller 1
320                    bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
321                    break;
322                case ::gig::lfo1_ctrl_breath:
323                    lfo1_internal_depth  = 0;
324                    pLFO1->ExtController = 2; // MIDI controller 2
325                    bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
326                    break;
327                case ::gig::lfo1_ctrl_internal_modwheel:
328                    lfo1_internal_depth  = pRegion->LFO1InternalDepth;
329                    pLFO1->ExtController = 1; // MIDI controller 1
330                    bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
331                    break;
332                case ::gig::lfo1_ctrl_internal_breath:
333                    lfo1_internal_depth  = pRegion->LFO1InternalDepth;
334                    pLFO1->ExtController = 2; // MIDI controller 2
335                    bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
336                    break;
337                default:
338                    lfo1_internal_depth  = 0;
339                    pLFO1->ExtController = 0; // no external controller
340                    bLFO1Enabled         = false;
341            }
342            if (bLFO1Enabled) {
343                pLFO1->trigger(fromGigLfoWave(pRegion->LFO1WaveForm),
344                               pRegion->LFO1Frequency,
345                               pRegion->LFO1Phase,
346                               LFO::start_level_mid, // see https://sourceforge.net/p/linuxsampler/mailman/linuxsampler-devel/thread/2189307.cNP0Xbctxq%40silver/#msg36774029
347                               lfo1_internal_depth,
348                               pRegion->LFO1ControlDepth,
349                               pRegion->LFO1FlipPhase,
350                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
351                pLFO1->updateByMIDICtrlValue(pLFO1->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO1->ExtController] : 0);
352                pLFO1->setScriptDepthFactor(
353                    pNote->Override.AmpLFODepth.Value,
354                    pNote->Override.AmpLFODepth.Final
355                );
356                if (pNote->Override.AmpLFOFreq.isFinal())
357                    pLFO1->setScriptFrequencyFinal(
358                        pNote->Override.AmpLFOFreq.Value, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE
359                    );
360                else
361                    pLFO1->setScriptFrequencyFactor(
362                        pNote->Override.AmpLFOFreq.Value, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE
363                    );
364            }
365        }
366    
367              Pos = newPos;      void Voice::InitLFO2() {
368              i = iSubFragmentEnd;          uint16_t lfo2_internal_depth;
369            switch (pRegion->LFO2Controller) {
370                case ::gig::lfo2_ctrl_internal:
371                    lfo2_internal_depth  = pRegion->LFO2InternalDepth;
372                    pLFO2->ExtController = 0; // no external controller
373                    bLFO2Enabled         = (lfo2_internal_depth > 0);
374                    break;
375                case ::gig::lfo2_ctrl_modwheel:
376                    lfo2_internal_depth  = 0;
377                    pLFO2->ExtController = 1; // MIDI controller 1
378                    bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
379                    break;
380                case ::gig::lfo2_ctrl_foot:
381                    lfo2_internal_depth  = 0;
382                    pLFO2->ExtController = 4; // MIDI controller 4
383                    bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
384                    break;
385                case ::gig::lfo2_ctrl_internal_modwheel:
386                    lfo2_internal_depth  = pRegion->LFO2InternalDepth;
387                    pLFO2->ExtController = 1; // MIDI controller 1
388                    bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
389                    break;
390                case ::gig::lfo2_ctrl_internal_foot:
391                    lfo2_internal_depth  = pRegion->LFO2InternalDepth;
392                    pLFO2->ExtController = 4; // MIDI controller 4
393                    bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
394                    break;
395                default:
396                    lfo2_internal_depth  = 0;
397                    pLFO2->ExtController = 0; // no external controller
398                    bLFO2Enabled         = false;
399            }
400            if (bLFO2Enabled) {
401                pLFO2->trigger(fromGigLfoWave(pRegion->LFO2WaveForm),
402                               pRegion->LFO2Frequency,
403                               pRegion->LFO2Phase,
404                               LFO::start_level_mid, // see https://sourceforge.net/p/linuxsampler/mailman/linuxsampler-devel/thread/2189307.cNP0Xbctxq%40silver/#msg36774029
405                               lfo2_internal_depth,
406                               pRegion->LFO2ControlDepth,
407                               pRegion->LFO2FlipPhase,
408                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
409                pLFO2->updateByMIDICtrlValue(pLFO2->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO2->ExtController] : 0);
410                pLFO2->setScriptDepthFactor(
411                    pNote->Override.CutoffLFODepth.Value,
412                    pNote->Override.CutoffLFODepth.Final
413                );
414                if (pNote->Override.CutoffLFOFreq.isFinal())
415                    pLFO2->setScriptFrequencyFinal(pNote->Override.CutoffLFOFreq.Value, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
416                else
417                    pLFO2->setScriptFrequencyFactor(pNote->Override.CutoffLFOFreq.Value, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
418          }          }
419      }      }
420    
421      /** @brief Update current portamento position.      void Voice::InitLFO3() {
422       *          uint16_t lfo3_internal_depth;
423       * Will be called when portamento mode is enabled to get the final          switch (pRegion->LFO3Controller) {
424       * portamento position of this active voice from where the next voice(s)              case ::gig::lfo3_ctrl_internal:
425       * might continue to slide on.                  lfo3_internal_depth  = pRegion->LFO3InternalDepth;
426       *                  pLFO3->ExtController = 0; // no external controller
427       * @param itNoteOffEvent - event which causes this voice to die soon                  bLFO3Enabled         = (lfo3_internal_depth > 0);
428       */                  break;
429      void Voice::UpdatePortamentoPos(Pool<Event>::Iterator& itNoteOffEvent) {              case ::gig::lfo3_ctrl_modwheel:
430          const float fFinalEG3Level = EG3.level(itNoteOffEvent->FragmentPos());                  lfo3_internal_depth  = 0;
431          pEngineChannel->PortamentoPos = (float) MIDIKey + RTMath::FreqRatioToCents(fFinalEG3Level) * 0.01f;                  pLFO3->ExtController = 1; // MIDI controller 1
432      }                  bLFO3Enabled         = (pRegion->LFO3ControlDepth > 0);
433                    break;
434      /**              case ::gig::lfo3_ctrl_aftertouch:
435       *  Immediately kill the voice. This method should not be used to kill                  lfo3_internal_depth  = 0;
436       *  a normal, active voice, because it doesn't take care of things like                  pLFO3->ExtController = CTRL_TABLE_IDX_AFTERTOUCH;
437       *  fading down the volume level to avoid clicks and regular processing                  bLFO3Enabled         = true;
438       *  until the kill event actually occured!                  break;
439       *              case ::gig::lfo3_ctrl_internal_modwheel:
440       *  @see Kill()                  lfo3_internal_depth  = pRegion->LFO3InternalDepth;
441       */                  pLFO3->ExtController = 1; // MIDI controller 1
442      void Voice::KillImmediately() {                  bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
443          if (DiskVoice && DiskStreamRef.State != Stream::state_unused) {                  break;
444              pDiskThread->OrderDeletionOfStream(&DiskStreamRef);              case ::gig::lfo3_ctrl_internal_aftertouch:
445          }                  lfo3_internal_depth  = pRegion->LFO3InternalDepth;
446          Reset();                  pLFO3->ExtController = CTRL_TABLE_IDX_AFTERTOUCH;
447      }                  bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
448                    break;
449      /**              default:
450       *  Kill the voice in regular sense. Let the voice render audio until                  lfo3_internal_depth  = 0;
451       *  the kill event actually occured and then fade down the volume level                  pLFO3->ExtController = 0; // no external controller
452       *  very quickly and let the voice die finally. Unlike a normal release                  bLFO3Enabled         = false;
453       *  of a voice, a kill process cannot be cancalled and is therefore          }
454       *  usually used for voice stealing and key group conflicts.          if (bLFO3Enabled) {
455       *              pLFO3->trigger(fromGigLfoWave(pRegion->LFO3WaveForm),
456       *  @param itKillEvent - event which caused the voice to be killed                             pRegion->LFO3Frequency,
457       */                             pRegion->LFO3Phase,
458      void Voice::Kill(Pool<Event>::Iterator& itKillEvent) {                             LFO::start_level_max, // see https://sourceforge.net/p/linuxsampler/mailman/linuxsampler-devel/thread/2189307.cNP0Xbctxq%40silver/#msg36774029
459          #if CONFIG_DEVMODE                             lfo3_internal_depth,
460          if (!itKillEvent) dmsg(1,("gig::Voice::Kill(): ERROR, !itKillEvent !!!\n"));                             pRegion->LFO3ControlDepth,
461          if (itKillEvent && !itKillEvent.isValid()) dmsg(1,("gig::Voice::Kill(): ERROR, itKillEvent invalid !!!\n"));                             pRegion->LFO3FlipPhase,
462          #endif // CONFIG_DEVMODE                             pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
463                pLFO3->updateByMIDICtrlValue(pLFO3->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO3->ExtController] : 0);
464                pLFO3->setScriptDepthFactor(
465                    pNote->Override.PitchLFODepth.Value,
466                    pNote->Override.PitchLFODepth.Final
467                );
468                if (pNote->Override.PitchLFOFreq.isFinal())
469                    pLFO3->setScriptFrequencyFinal(pNote->Override.PitchLFOFreq.Value, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
470                else
471                    pLFO3->setScriptFrequencyFactor(pNote->Override.PitchLFOFreq.Value, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
472            }
473        }
474    
475        float Voice::CalculateCutoffBase(uint8_t MIDIKeyVelocity) {
476            float cutoff = pRegion->GetVelocityCutoff(MIDIKeyVelocity);
477            if (pRegion->VCFKeyboardTracking) {
478                cutoff *= RTMath::CentsToFreqRatioUnlimited((MIDIKey() - pRegion->VCFKeyboardTrackingBreakpoint) * 100);
479            }
480            return cutoff;
481        }
482    
483        // This is just called when the voice is triggered. On any subsequent cutoff
484        // controller changes ProcessCutoffEvent() is called instead.
485        float Voice::CalculateFinalCutoff(float cutoffBase) {
486            // if the selected filter type is an official GigaStudio filter type
487            // then we preserve the original (no matter how odd) historical GSt
488            // behaviour identically; for our own filter types though we deviate to
489            // more meaningful behaviours where appropriate
490            const bool isGStFilter = isGStFilterType(pRegion->VCFType);
491    
492            // get current cutoff CC or velocity value (always 0..127)
493            float cvalue;
494            if (VCFCutoffCtrl.controller) {
495                cvalue = GetGigEngineChannel()->ControllerTable[VCFCutoffCtrl.controller];
496                if (pRegion->VCFCutoffControllerInvert) cvalue = 127 - cvalue;
497                if (isGStFilter) {
498                    // VCFVelocityScale in this case means "minimum cutoff" for GSt
499                    if (cvalue < MinCutoff()) cvalue = MinCutoff();
500                } else {
501                    // for our own filter types we interpret "minimum cutoff"
502                    // differently: GSt handles this as a simple hard limit with the
503                    // consequence that a certain range of the controller is simply
504                    // dead; so for our filter types we rather remap that to
505                    // restrain within the min_cutoff..127 range as well, but
506                    // effectively spanned over the entire controller range (0..127)
507                    // to avoid such a "dead" lower controller zone
508                    cvalue = MinCutoff() + (cvalue / 127.f) * float(127 - MinCutoff());
509                }
510            } else {
511                // in case of velocity, VCFVelocityScale parameter is already
512                // handled on libgig side (so by calling
513                // pRegion->GetVelocityCutoff(velo) in CalculateCutoffBase() above)
514                cvalue = pRegion->VCFCutoff;
515            }
516    
517            float fco = cutoffBase * cvalue;
518            if (fco > 127.0f) fco = 127.0f;
519    
520            // the filter implementations of the original GSt filter types take an
521            // abstract cutoff parameter range of 0..127, ...
522            if (isGStFilter)
523                return fco;
524    
525            // ... whereas our own filter types take a cutoff parameter in Hz, so
526            // remap here 0 .. 127 [lin] -> 21 Hz .. 18 kHz [x^4] (center @2.2 kHz)
527            fco = (fco + 29.f) / (127.f + 29.f);
528            fco = fco * fco * fco * fco * 18000.f;
529            if (fco > 0.49f * pEngine->SampleRate)
530                fco = 0.49f * pEngine->SampleRate;
531            return fco;
532        }
533    
534        uint8_t Voice::GetVCFCutoffCtrl() {
535            uint8_t ctrl;
536            switch (pRegion->VCFCutoffController) {
537                case ::gig::vcf_cutoff_ctrl_modwheel:
538                    ctrl = 1;
539                    break;
540                case ::gig::vcf_cutoff_ctrl_effect1:
541                    ctrl = 12;
542                    break;
543                case ::gig::vcf_cutoff_ctrl_effect2:
544                    ctrl = 13;
545                    break;
546                case ::gig::vcf_cutoff_ctrl_breath:
547                    ctrl = 2;
548                    break;
549                case ::gig::vcf_cutoff_ctrl_foot:
550                    ctrl = 4;
551                    break;
552                case ::gig::vcf_cutoff_ctrl_sustainpedal:
553                    ctrl = 64;
554                    break;
555                case ::gig::vcf_cutoff_ctrl_softpedal:
556                    ctrl = 67;
557                    break;
558                case ::gig::vcf_cutoff_ctrl_genpurpose7:
559                    ctrl = 82;
560                    break;
561                case ::gig::vcf_cutoff_ctrl_genpurpose8:
562                    ctrl = 83;
563                    break;
564                case ::gig::vcf_cutoff_ctrl_aftertouch:
565                    ctrl = CTRL_TABLE_IDX_AFTERTOUCH;
566                    break;
567                case ::gig::vcf_cutoff_ctrl_none:
568                default:
569                    ctrl = 0;
570                    break;
571            }
572    
573            return ctrl;
574        }
575    
576        uint8_t Voice::GetVCFResonanceCtrl() {
577            uint8_t ctrl;
578            switch (pRegion->VCFResonanceController) {
579                case ::gig::vcf_res_ctrl_genpurpose3:
580                    ctrl = 18;
581                    break;
582                case ::gig::vcf_res_ctrl_genpurpose4:
583                    ctrl = 19;
584                    break;
585                case ::gig::vcf_res_ctrl_genpurpose5:
586                    ctrl = 80;
587                    break;
588                case ::gig::vcf_res_ctrl_genpurpose6:
589                    ctrl = 81;
590                    break;
591                case ::gig::vcf_res_ctrl_none:
592                default:
593                    ctrl = 0;
594            }
595    
596            return ctrl;
597        }
598    
599          if (itTriggerEvent && itKillEvent->FragmentPos() <= itTriggerEvent->FragmentPos()) return;      void Voice::TriggerEG1(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
600          this->itKillEvent = itKillEvent;          EG1.setStateOptions(
601                pRegion->EG1Options.AttackCancel,
602                pRegion->EG1Options.AttackHoldCancel,
603                pRegion->EG1Options.Decay1Cancel,
604                pRegion->EG1Options.Decay2Cancel,
605                pRegion->EG1Options.ReleaseCancel
606            );
607            EG1.trigger(pRegion->EG1PreAttack,
608                        (pNote && pNote->Override.Attack.isFinal()) ?
609                            pNote->Override.Attack.Value :
610                            RTMath::Max(pRegion->EG1Attack, 0.0316) * egInfo.Attack,
611                        pRegion->EG1Hold,
612                        (pNote && pNote->Override.Decay.isFinal()) ?
613                            pNote->Override.Decay.Value :
614                            pRegion->EG1Decay1 * egInfo.Decay * velrelease,
615                        (pNote && pNote->Override.Decay.isFinal()) ?
616                            pNote->Override.Decay.Value :
617                            pRegion->EG1Decay2 * egInfo.Decay * velrelease,
618                        pRegion->EG1InfiniteSustain,
619                        (pNote && pNote->Override.Sustain.Final) ?
620                            uint(pNote->Override.Sustain.Value * 1000.f) :
621                            pRegion->EG1Sustain * (pNote ? pNote->Override.Sustain.Value : 1.f),
622                        (pNote && pNote->Override.Release.isFinal()) ?
623                            pNote->Override.Release.Value :
624                            RTMath::Max(pRegion->EG1Release * velrelease, 0.014) * egInfo.Release,
625                        velocityAttenuation,
626                        sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
627        }
628    
629        void Voice::TriggerEG2(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
630            EG2.setStateOptions(
631                pRegion->EG2Options.AttackCancel,
632                pRegion->EG2Options.AttackHoldCancel,
633                pRegion->EG2Options.Decay1Cancel,
634                pRegion->EG2Options.Decay2Cancel,
635                pRegion->EG2Options.ReleaseCancel
636            );
637            EG2.trigger(uint(RgnInfo.EG2PreAttack),
638                        (pNote && pNote->Override.CutoffAttack.isFinal()) ?
639                            pNote->Override.CutoffAttack.Value :
640                            RgnInfo.EG2Attack * egInfo.Attack,
641                        false,
642                        (pNote && pNote->Override.CutoffDecay.isFinal()) ?
643                            pNote->Override.CutoffDecay.Value :
644                            RgnInfo.EG2Decay1 * egInfo.Decay * velrelease,
645                        (pNote && pNote->Override.CutoffDecay.isFinal()) ?
646                            pNote->Override.CutoffDecay.Value :
647                            RgnInfo.EG2Decay2 * egInfo.Decay * velrelease,
648                        RgnInfo.EG2InfiniteSustain,
649                        (pNote && pNote->Override.CutoffSustain.Final) ?
650                            uint(pNote->Override.CutoffSustain.Value * 1000.f) :
651                            uint(RgnInfo.EG2Sustain),
652                        (pNote && pNote->Override.CutoffRelease.isFinal()) ?
653                            pNote->Override.CutoffRelease.Value :
654                            RgnInfo.EG2Release * egInfo.Release * velrelease,
655                        velocityAttenuation,
656                        sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
657        }
658    
659        void Voice::ProcessGroupEvent(RTList<Event>::Iterator& itEvent) {
660            dmsg(4,("Voice %p processGroupEvents event type=%d", (void*)this, itEvent->Type));
661    
662            // TODO: The SustainPedal condition could be wrong, maybe the
663            // check should be if this Voice is in release stage or is a
664            // release sample instead. Need to test this in GSt.
665            // -- Andreas
666            //
667            // Commented sustain pedal check out. I don't think voices of the same
668            // note should be stopped at all, because it doesn't sound naturally
669            // with a drumkit.
670            // -- Christian, 2013-01-08
671            if (itEvent->Param.Note.Key != HostKey() /*||
672                !GetGigEngineChannel()->SustainPedal*/) {
673                dmsg(4,("Voice %p - kill", (void*)this));
674    
675                // kill the voice fast
676                pEG1->enterFadeOutStage();
677            }
678        }
679    
680        void Voice::CalculateFadeOutCoeff(float FadeOutTime, float SampleRate) {
681            EG1.CalculateFadeOutCoeff(FadeOutTime, SampleRate);
682        }
683    
684        int Voice::CalculatePan(uint8_t pan) {
685            int p;
686            // Gst behaviour: -64 and 63 are special cases
687            if (RgnInfo.Pan == -64)     p = pan * 2 - 127;
688            else if (RgnInfo.Pan == 63) p = pan * 2;
689            else                        p = pan + RgnInfo.Pan;
690    
691            if (p < 0) return 0;
692            if (p > 127) return 127;
693            return p;
694        }
695    
696        release_trigger_t Voice::GetReleaseTriggerFlags() {
697            release_trigger_t flags =
698                (pRegion->NoNoteOffReleaseTrigger) ?
699                    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
700            switch (pRegion->SustainReleaseTrigger) {
701                case ::gig::sust_rel_trg_none:
702                    break;
703                case ::gig::sust_rel_trg_maxvelocity:
704                    flags |= release_trigger_sustain_maxvelocity;
705                    break;
706                case ::gig::sust_rel_trg_keyvelocity:
707                    flags |= release_trigger_sustain_keyvelocity;
708                    break;
709            }
710            return flags;
711      }      }
712    
713  }} // namespace LinuxSampler::gig  }} // namespace LinuxSampler::gig
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