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

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revision 1857 by schoenebeck, Sat Mar 7 19:23:10 2009 UTC revision 2408 by persson, Sat Feb 2 08:22:49 2013 UTC
# Line 3  Line 3 
3   *   LinuxSampler - modular, streaming capable sampler                     *   *   LinuxSampler - modular, streaming capable sampler                     *
4   *                                                                         *   *                                                                         *
5   *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *   *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *
6   *   Copyright (C) 2005 - 2009 Christian Schoenebeck                       *   *   Copyright (C) 2005 - 2008 Christian Schoenebeck                       *
7     *   Copyright (C) 2009 - 2013 Christian Schoenebeck and Grigor Iliev      *
8   *                                                                         *   *                                                                         *
9   *   This program is free software; you can redistribute it and/or modify  *   *   This program is free software; you can redistribute it and/or modify  *
10   *   it under the terms of the GNU General Public License as published by  *   *   it under the terms of the GNU General Public License as published by  *
# Line 24  Line 25 
25  #include "../../common/Features.h"  #include "../../common/Features.h"
26  #include "Synthesizer.h"  #include "Synthesizer.h"
27  #include "Profiler.h"  #include "Profiler.h"
28    #include "Engine.h"
29    #include "EngineChannel.h"
30    
31  #include "Voice.h"  #include "Voice.h"
32    
33  namespace LinuxSampler { namespace gig {  namespace LinuxSampler { namespace gig {
34    
35      Voice::Voice() {      Voice::Voice() {
36          pEngine     = NULL;          pEngine = NULL;
37          pDiskThread = NULL;          pEG1 = &EG1;
38          PlaybackState = playback_state_end;          pEG2 = &EG2;
         pLFO1 = new LFOUnsigned(1.0f);  // amplitude EG (0..1 range)  
         pLFO2 = new LFOUnsigned(1.0f);  // filter EG (0..1 range)  
         pLFO3 = new LFOSigned(1200.0f); // pitch EG (-1200..+1200 range)  
         KeyGroup = 0;  
         SynthesisMode = 0; // set all mode bits to 0 first  
         // select synthesis implementation (asm core is not supported ATM)  
         #if 0 // CONFIG_ASM && ARCH_X86  
         SYNTHESIS_MODE_SET_IMPLEMENTATION(SynthesisMode, Features::supportsMMX() && Features::supportsSSE());  
         #else  
         SYNTHESIS_MODE_SET_IMPLEMENTATION(SynthesisMode, false);  
         #endif  
         SYNTHESIS_MODE_SET_PROFILING(SynthesisMode, Profiler::isEnabled());  
   
         finalSynthesisParameters.filterLeft.Reset();  
         finalSynthesisParameters.filterRight.Reset();  
39      }      }
40    
41      Voice::~Voice() {      Voice::~Voice() {
         if (pLFO1) delete pLFO1;  
         if (pLFO2) delete pLFO2;  
         if (pLFO3) delete pLFO3;  
42      }      }
43    
44      void Voice::SetEngine(Engine* pEngine) {      EngineChannel* Voice::GetGigEngineChannel() {
45          this->pEngine     = pEngine;          return static_cast<EngineChannel*>(pEngineChannel);
46          this->pDiskThread = pEngine->pDiskThread;      }
47    
48        void Voice::SetEngine(LinuxSampler::Engine* pEngine) {
49            Engine* engine = static_cast<Engine*>(pEngine);
50            this->pEngine     = engine;
51            this->pDiskThread = engine->pDiskThread;
52          dmsg(6,("Voice::SetEngine()\n"));          dmsg(6,("Voice::SetEngine()\n"));
53      }      }
54    
55      /**      Voice::SampleInfo Voice::GetSampleInfo() {
56       *  Initializes and triggers the voice, a disk stream will be launched if          SampleInfo si;
57       *  needed.          si.SampleRate       = pSample->SamplesPerSecond;
58       *          si.ChannelCount     = pSample->Channels;
59       *  @param pEngineChannel - engine channel on which this voice was ordered          si.FrameSize        = pSample->FrameSize;
60       *  @param itNoteOnEvent  - event that caused triggering of this voice          si.BitDepth         = pSample->BitDepth;
61       *  @param PitchBend      - MIDI detune factor (-8192 ... +8191)          si.TotalFrameCount  = pSample->SamplesTotal;
      *  @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);  
62    
63          // get starting crossfade volume level          si.HasLoops       = pRegion->SampleLoops;
64          float crossfadeVolume;          si.LoopStart      = (si.HasLoops) ? pRegion->pSampleLoops[0].LoopStart  : 0;
65          switch (pDimRgn->AttenuationController.type) {          si.LoopLength     = (si.HasLoops) ? pRegion->pSampleLoops[0].LoopLength : 0;
66              case ::gig::attenuation_ctrl_t::type_channelaftertouch:          si.LoopPlayCount  = pSample->LoopPlayCount;
67                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(pEngineChannel->ControllerTable[128])];          si.Unpitched      = !pRegion->PitchTrack;
                 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;  
         }  
68    
69          VolumeLeft  = volume * Engine::PanCurve[64 - pDimRgn->Pan];          return si;
70          VolumeRight = volume * Engine::PanCurve[64 + pDimRgn->Pan];      }
71    
72          float subfragmentRate = pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE;      Voice::RegionInfo Voice::GetRegionInfo() {
73          CrossfadeSmoother.trigger(crossfadeVolume, subfragmentRate);          RegionInfo ri;
74          VolumeSmoother.trigger(pEngineChannel->MidiVolume, subfragmentRate);          ri.UnityNote = pRegion->UnityNote;
75          PanLeftSmoother.trigger(pEngineChannel->GlobalPanLeft, subfragmentRate);          ri.FineTune  = pRegion->FineTune;
76          PanRightSmoother.trigger(pEngineChannel->GlobalPanRight, subfragmentRate);          ri.Pan       = pRegion->Pan;
77            ri.SampleStartOffset = pRegion->SampleStartOffset;
         finalSynthesisParameters.dPos = pDimRgn->SampleStartOffset; // offset where we should start playback of sample (0 - 2000 sample points)  
         Pos = pDimRgn->SampleStartOffset;  
   
         // Check if the sample needs disk streaming or is too short for that  
         long cachedsamples = pSample->GetCache().Size / pSample->FrameSize;  
         DiskVoice          = cachedsamples < pSample->SamplesTotal;  
   
         const DLS::sample_loop_t& loopinfo = pDimRgn->pSampleLoops[0];  
   
         if (DiskVoice) { // voice to be streamed from disk  
             MaxRAMPos = cachedsamples - (pEngine->MaxSamplesPerCycle << CONFIG_MAX_PITCH) / pSample->Channels; //TODO: this calculation is too pessimistic and may better be moved to Render() method, so it calculates MaxRAMPos dependent to the current demand of sample points to be rendered (e.g. in case of JACK)  
   
             // check if there's a loop defined which completely fits into the cached (RAM) part of the sample  
             RAMLoop = (pDimRgn->SampleLoops && (loopinfo.LoopStart + loopinfo.LoopLength) <= MaxRAMPos);  
   
             if (pDiskThread->OrderNewStream(&DiskStreamRef, pDimRgn, MaxRAMPos, !RAMLoop) < 0) {  
                 dmsg(1,("Disk stream order failed!\n"));  
                 KillImmediately();  
                 return -1;  
             }  
             dmsg(4,("Disk voice launched (cached samples: %d, total Samples: %d, MaxRAMPos: %d, RAMLooping: %s)\n", cachedsamples, pSample->SamplesTotal, MaxRAMPos, (RAMLoop) ? "yes" : "no"));  
         }  
         else { // RAM only voice  
             MaxRAMPos = cachedsamples;  
             RAMLoop = (pDimRgn->SampleLoops != 0);  
             dmsg(4,("RAM only voice launched (Looping: %s)\n", (RAMLoop) ? "yes" : "no"));  
         }  
         if (RAMLoop) {  
             loop.uiTotalCycles = pSample->LoopPlayCount;  
             loop.uiCyclesLeft  = pSample->LoopPlayCount;  
             loop.uiStart       = loopinfo.LoopStart;  
             loop.uiEnd         = loopinfo.LoopStart + loopinfo.LoopLength;  
             loop.uiSize        = loopinfo.LoopLength;  
         }  
   
         // calculate initial pitch value  
         {  
             double pitchbasecents = pDimRgn->FineTune + (int) pEngine->ScaleTuning[MIDIKey % 12];  
   
             // GSt behaviour: maximum transpose up is 40 semitones. If  
             // MIDI key is more than 40 semitones above unity note,  
             // the transpose is not done.  
             if (pDimRgn->PitchTrack && (MIDIKey - (int) pDimRgn->UnityNote) < 40) pitchbasecents += (MIDIKey - (int) pDimRgn->UnityNote) * 100;  
   
             this->PitchBase = RTMath::CentsToFreqRatio(pitchbasecents) * (double(pSample->SamplesPerSecond) / double(pEngine->SampleRate));  
             this->PitchBend = RTMath::CentsToFreqRatio(((double) PitchBend / 8192.0) * 200.0); // pitchbend wheel +-2 semitones = 200 cents  
         }  
   
         // the length of the decay and release curves are dependent on the velocity  
         const double velrelease = 1 / pDimRgn->GetVelocityRelease(itNoteOnEvent->Param.Note.Velocity);  
   
         // setup EG 1 (VCA EG)  
         {  
             // get current value of EG1 controller  
             double eg1controllervalue;  
             switch (pDimRgn->EG1Controller.type) {  
                 case ::gig::eg1_ctrl_t::type_none: // no controller defined  
                     eg1controllervalue = 0;  
                     break;  
                 case ::gig::eg1_ctrl_t::type_channelaftertouch:  
                     eg1controllervalue = pEngineChannel->ControllerTable[128];  
                     break;  
                 case ::gig::eg1_ctrl_t::type_velocity:  
                     eg1controllervalue = itNoteOnEvent->Param.Note.Velocity;  
                     break;  
                 case ::gig::eg1_ctrl_t::type_controlchange: // MIDI control change controller  
                     eg1controllervalue = pEngineChannel->ControllerTable[pDimRgn->EG1Controller.controller_number];  
                     break;  
             }  
             if (pDimRgn->EG1ControllerInvert) eg1controllervalue = 127 - eg1controllervalue;  
78    
79              // calculate influence of EG1 controller on EG1's parameters          ri.EG2PreAttack        = pRegion->EG2PreAttack;
80              // (eg1attack is different from the others)          ri.EG2Attack           = pRegion->EG2Attack;
81              double eg1attack  = (pDimRgn->EG1ControllerAttackInfluence)  ?          ri.EG2Decay1           = pRegion->EG2Decay1;
82                  1 + 0.031 * (double) (pDimRgn->EG1ControllerAttackInfluence == 1 ?          ri.EG2Decay2           = pRegion->EG2Decay2;
83                                        1 : 1 << pDimRgn->EG1ControllerAttackInfluence) * eg1controllervalue : 1.0;          ri.EG2Sustain          = pRegion->EG2Sustain;
84              double eg1decay   = (pDimRgn->EG1ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pDimRgn->EG1ControllerDecayInfluence)   * eg1controllervalue : 1.0;          ri.EG2InfiniteSustain  = pRegion->EG2InfiniteSustain;
85              double eg1release = (pDimRgn->EG1ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pDimRgn->EG1ControllerReleaseInfluence) * eg1controllervalue : 1.0;          ri.EG2Release          = pRegion->EG2Release;
   
             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;  
86    
87              // calculate influence of EG2 controller on EG2's parameters          ri.EG3Attack     = pRegion->EG3Attack;
88              double eg2attack  = (pDimRgn->EG2ControllerAttackInfluence)  ? 1 + 0.00775 * (double) (1 << pDimRgn->EG2ControllerAttackInfluence)  * eg2controllervalue : 1.0;          ri.EG3Depth      = pRegion->EG3Depth;
89              double eg2decay   = (pDimRgn->EG2ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pDimRgn->EG2ControllerDecayInfluence)   * eg2controllervalue : 1.0;          ri.VCFEnabled    = pRegion->VCFEnabled;
90              double eg2release = (pDimRgn->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pDimRgn->EG2ControllerReleaseInfluence) * eg2controllervalue : 1.0;          ri.VCFType       = Filter::vcf_type_t(pRegion->VCFType);
91            ri.VCFResonance  = pRegion->VCFResonance;
             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);  
             }  
         }  
92    
93            ri.ReleaseTriggerDecay = 0.01053 * (256 >> pRegion->ReleaseTriggerDecay);
94    
95          // setup LFO 2 (VCF Cutoff LFO)          return ri;
96          {      }
             uint16_t lfo2_internal_depth;  
             switch (pDimRgn->LFO2Controller) {  
                 case ::gig::lfo2_ctrl_internal:  
                     lfo2_internal_depth  = pDimRgn->LFO2InternalDepth;  
                     pLFO2->ExtController = 0; // no external controller  
                     bLFO2Enabled         = (lfo2_internal_depth > 0);  
                     break;  
                 case ::gig::lfo2_ctrl_modwheel:  
                     lfo2_internal_depth  = 0;  
                     pLFO2->ExtController = 1; // MIDI controller 1  
                     bLFO2Enabled         = (pDimRgn->LFO2ControlDepth > 0);  
                     break;  
                 case ::gig::lfo2_ctrl_foot:  
                     lfo2_internal_depth  = 0;  
                     pLFO2->ExtController = 4; // MIDI controller 4  
                     bLFO2Enabled         = (pDimRgn->LFO2ControlDepth > 0);  
                     break;  
                 case ::gig::lfo2_ctrl_internal_modwheel:  
                     lfo2_internal_depth  = pDimRgn->LFO2InternalDepth;  
                     pLFO2->ExtController = 1; // MIDI controller 1  
                     bLFO2Enabled         = (lfo2_internal_depth > 0 || pDimRgn->LFO2ControlDepth > 0);  
                     break;  
                 case ::gig::lfo2_ctrl_internal_foot:  
                     lfo2_internal_depth  = pDimRgn->LFO2InternalDepth;  
                     pLFO2->ExtController = 4; // MIDI controller 4  
                     bLFO2Enabled         = (lfo2_internal_depth > 0 || pDimRgn->LFO2ControlDepth > 0);  
                     break;  
                 default:  
                     lfo2_internal_depth  = 0;  
                     pLFO2->ExtController = 0; // no external controller  
                     bLFO2Enabled         = false;  
             }  
             if (bLFO2Enabled) {  
                 pLFO2->trigger(pDimRgn->LFO2Frequency,  
                                start_level_max,  
                                lfo2_internal_depth,  
                                pDimRgn->LFO2ControlDepth,  
                                pDimRgn->LFO2FlipPhase,  
                                pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
                 pLFO2->update(pLFO2->ExtController ? pEngineChannel->ControllerTable[pLFO2->ExtController] : 0);  
             }  
         }  
97    
98        Voice::InstrumentInfo Voice::GetInstrumentInfo() {
99            InstrumentInfo ii;
100            ii.FineTune = GetGigEngineChannel()->pInstrument->FineTune;
101            ii.PitchbendRange = GetGigEngineChannel()->pInstrument->PitchbendRange;
102    
103          // setup LFO 3 (VCO LFO)          return ii;
104          {      }
             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 = 128;  
                     bLFO3Enabled         = true;  
                     break;  
                 case ::gig::lfo3_ctrl_internal_modwheel:  
                     lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;  
                     pLFO3->ExtController = 1; // MIDI controller 1  
                     bLFO3Enabled         = (lfo3_internal_depth > 0 || pDimRgn->LFO3ControlDepth > 0);  
                     break;  
                 case ::gig::lfo3_ctrl_internal_aftertouch:  
                     lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;  
                     pLFO1->ExtController = 128;  
                     bLFO3Enabled         = (lfo3_internal_depth > 0 || pDimRgn->LFO3ControlDepth > 0);  
                     break;  
                 default:  
                     lfo3_internal_depth  = 0;  
                     pLFO3->ExtController = 0; // no external controller  
                     bLFO3Enabled         = false;  
             }  
             if (bLFO3Enabled) {  
                 pLFO3->trigger(pDimRgn->LFO3Frequency,  
                                start_level_mid,  
                                lfo3_internal_depth,  
                                pDimRgn->LFO3ControlDepth,  
                                false,  
                                pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
                 pLFO3->update(pLFO3->ExtController ? pEngineChannel->ControllerTable[pLFO3->ExtController] : 0);  
             }  
         }  
105    
106        double Voice::GetSampleAttenuation() {
107            return pRegion->SampleAttenuation;
108        }
109    
110          #if CONFIG_FORCE_FILTER      double Voice::GetVelocityAttenuation(uint8_t MIDIKeyVelocity) {
111          const bool bUseFilter = true;          return pRegion->GetVelocityAttenuation(MIDIKeyVelocity);
112          #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:  
                     VCFCutoffCtrl.controller = 128;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_none:  
                 default:  
                     VCFCutoffCtrl.controller = 0;  
                     break;  
             }  
             #endif // CONFIG_OVERRIDE_CUTOFF_CTRL  
113    
114              #ifdef CONFIG_OVERRIDE_RESONANCE_CTRL      double Voice::GetVelocityRelease(uint8_t MIDIKeyVelocity) {
115              VCFResonanceCtrl.controller = CONFIG_OVERRIDE_RESONANCE_CTRL;          return pRegion->GetVelocityRelease(MIDIKeyVelocity);
116              #else // use the one defined in the instrument file      }
             switch (pDimRgn->VCFResonanceController) {  
                 case ::gig::vcf_res_ctrl_genpurpose3:  
                     VCFResonanceCtrl.controller = 18;  
                     break;  
                 case ::gig::vcf_res_ctrl_genpurpose4:  
                     VCFResonanceCtrl.controller = 19;  
                     break;  
                 case ::gig::vcf_res_ctrl_genpurpose5:  
                     VCFResonanceCtrl.controller = 80;  
                     break;  
                 case ::gig::vcf_res_ctrl_genpurpose6:  
                     VCFResonanceCtrl.controller = 81;  
                     break;  
                 case ::gig::vcf_res_ctrl_none:  
                 default:  
                     VCFResonanceCtrl.controller = 0;  
             }  
             #endif // CONFIG_OVERRIDE_RESONANCE_CTRL  
117    
118              #ifndef CONFIG_OVERRIDE_FILTER_TYPE      void Voice::ProcessCCEvent(RTList<Event>::Iterator& itEvent) {
119              finalSynthesisParameters.filterLeft.SetType(pDimRgn->VCFType);          if (itEvent->Type == Event::type_control_change && itEvent->Param.CC.Controller) { // if (valid) MIDI control change event
120              finalSynthesisParameters.filterRight.SetType(pDimRgn->VCFType);              if (pRegion->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&
121              #else // override filter type                  itEvent->Param.CC.Controller == pRegion->AttenuationController.controller_number) {
122              finalSynthesisParameters.filterLeft.SetType(CONFIG_OVERRIDE_FILTER_TYPE);                  CrossfadeSmoother.update(AbstractEngine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.CC.Value)]);
             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)  
123              }              }
124              CutoffBase = cutoff;          }
125        }
126    
127              int cvalue;      void Voice::ProcessCutoffEvent(RTList<Event>::Iterator& itEvent) {
128              if (VCFCutoffCtrl.controller) {          int ccvalue = itEvent->Param.CC.Value;
129                  cvalue = pEngineChannel->ControllerTable[VCFCutoffCtrl.controller];          if (VCFCutoffCtrl.value == ccvalue) return;
130                  if (pDimRgn->VCFCutoffControllerInvert) cvalue = 127 - cvalue;          VCFCutoffCtrl.value = ccvalue;
131                  // VCFVelocityScale in this case means Minimum cutoff          if (pRegion->VCFCutoffControllerInvert)  ccvalue = 127 - ccvalue;
132                  if (cvalue < pDimRgn->VCFVelocityScale) cvalue = pDimRgn->VCFVelocityScale;          if (ccvalue < pRegion->VCFVelocityScale) ccvalue = pRegion->VCFVelocityScale;
133              }          float cutoff = CutoffBase * float(ccvalue);
134              else {          if (cutoff > 127.0f) cutoff = 127.0f;
                 cvalue = pDimRgn->VCFCutoff;  
             }  
             cutoff *= float(cvalue);  
             if (cutoff > 127.0f) cutoff = 127.0f;  
135    
136              // calculate resonance          VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of fFinalCutoff next time
137              float resonance = (float) (VCFResonanceCtrl.controller ? VCFResonanceCtrl.value : pDimRgn->VCFResonance);          fFinalCutoff = cutoff;
138        }
139    
140              VCFCutoffCtrl.fvalue    = cutoff;      double Voice::CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity) {
141              VCFResonanceCtrl.fvalue = resonance;          float crossfadeVolume;
142          }          switch (pRegion->AttenuationController.type) {
143          else {              case ::gig::attenuation_ctrl_t::type_channelaftertouch:
144              VCFCutoffCtrl.controller    = 0;                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[128])];
145              VCFResonanceCtrl.controller = 0;                  break;
146                case ::gig::attenuation_ctrl_t::type_velocity:
147                    crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(MIDIKeyVelocity)];
148                    break;
149                case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate
150                    crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[pRegion->AttenuationController.controller_number])];
151                    break;
152                case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined
153                default:
154                    crossfadeVolume = 1.0f;
155          }          }
156    
157          return 0; // success          return crossfadeVolume;
158      }      }
159    
160      /**      double Voice::GetEG1ControllerValue(uint8_t MIDIKeyVelocity) {
161       *  Renders the audio data for this voice for the current audio fragment.          double eg1controllervalue = 0;
162       *  The sample input data can either come from RAM (cached sample or sample          switch (pRegion->EG1Controller.type) {
163       *  part) or directly from disk. The output signal will be rendered by              case ::gig::eg1_ctrl_t::type_none: // no controller defined
164       *  resampling / interpolation. If this voice is a disk streaming voice and                  eg1controllervalue = 0;
165       *  the voice completely played back the cached RAM part of the sample, it                  break;
166       *  will automatically switch to disk playback for the next RenderAudio()              case ::gig::eg1_ctrl_t::type_channelaftertouch:
167       *  call.                  eg1controllervalue = GetGigEngineChannel()->ControllerTable[128];
168       *                  break;
169       *  @param Samples - number of samples to be rendered in this audio fragment cycle              case ::gig::eg1_ctrl_t::type_velocity:
170       */                  eg1controllervalue = MIDIKeyVelocity;
171      void Voice::Render(uint Samples) {                  break;
172                case ::gig::eg1_ctrl_t::type_controlchange: // MIDI control change controller
173          // select default values for synthesis mode bits                  eg1controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG1Controller.controller_number];
174          SYNTHESIS_MODE_SET_LOOP(SynthesisMode, false);                  break;
   
         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);  
             }  
175          }          }
176            if (pRegion->EG1ControllerInvert) eg1controllervalue = 127 - eg1controllervalue;
177    
178            return eg1controllervalue;
179      }      }
180    
181      /**      Voice::EGInfo Voice::CalculateEG1ControllerInfluence(double eg1ControllerValue) {
182       * Process given list of MIDI control change and pitch bend events for          EGInfo eg;
183       * the given time.          // (eg1attack is different from the others)
184       *          if (pRegion->EG1Attack < 1e-8 && // attack in gig == 0
185       * @param itEvent - iterator pointing to the next event to be processed              (pRegion->EG1ControllerAttackInfluence == 0 ||
186       * @param End     - youngest time stamp where processing should be stopped               eg1ControllerValue <= 10)) { // strange GSt special case
187       */              eg.Attack = 0; // this will force the attack to be 0 in the call to EG1.trigger
188      void Voice::processCCEvents(RTList<Event>::Iterator& itEvent, uint End) {          } else {
189          for (; itEvent && itEvent->FragmentPos() <= End; ++itEvent) {              eg.Attack  = (pRegion->EG1ControllerAttackInfluence)  ?
190              if (itEvent->Type == Event::type_control_change &&                  1 + 0.031 * (double) (pRegion->EG1ControllerAttackInfluence == 1 ?
191                  itEvent->Param.CC.Controller) { // if (valid) MIDI control change event                                        1 : 1 << pRegion->EG1ControllerAttackInfluence) * eg1ControllerValue : 1.0;
192                  if (itEvent->Param.CC.Controller == VCFCutoffCtrl.controller) {          }
193                      processCutoffEvent(itEvent);          eg.Decay   = (pRegion->EG1ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerDecayInfluence)   * eg1ControllerValue : 1.0;
194                  }          eg.Release = (pRegion->EG1ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerReleaseInfluence) * eg1ControllerValue : 1.0;
195                  if (itEvent->Param.CC.Controller == VCFResonanceCtrl.controller) {  
196                      processResonanceEvent(itEvent);          return eg;
197                  }      }
198                  if (itEvent->Param.CC.Controller == pLFO1->ExtController) {  
199                      pLFO1->update(itEvent->Param.CC.Value);      double Voice::GetEG2ControllerValue(uint8_t MIDIKeyVelocity) {
200                  }          double eg2controllervalue = 0;
201                  if (itEvent->Param.CC.Controller == pLFO2->ExtController) {          switch (pRegion->EG2Controller.type) {
202                      pLFO2->update(itEvent->Param.CC.Value);              case ::gig::eg2_ctrl_t::type_none: // no controller defined
203                  }                  eg2controllervalue = 0;
204                  if (itEvent->Param.CC.Controller == pLFO3->ExtController) {                  break;
205                      pLFO3->update(itEvent->Param.CC.Value);              case ::gig::eg2_ctrl_t::type_channelaftertouch:
206                  }                  eg2controllervalue = GetGigEngineChannel()->ControllerTable[128];
207                  if (pDimRgn->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&                  break;
208                      itEvent->Param.CC.Controller == pDimRgn->AttenuationController.controller_number) {              case ::gig::eg2_ctrl_t::type_velocity:
209                      CrossfadeSmoother.update(Engine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.CC.Value)]);                  eg2controllervalue = MIDIKeyVelocity;
210                  }                  break;
211                  if (itEvent->Param.CC.Controller == 7) { // volume              case ::gig::eg2_ctrl_t::type_controlchange: // MIDI control change controller
212                      VolumeSmoother.update(Engine::VolumeCurve[itEvent->Param.CC.Value]);                  eg2controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG2Controller.controller_number];
213                  } else if (itEvent->Param.CC.Controller == 10) { // panpot                  break;
                     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);  
             }  
214          }          }
215      }          if (pRegion->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue;
216    
217      void Voice::processPitchEvent(RTList<Event>::Iterator& itEvent) {          return eg2controllervalue;
         const float pitch = RTMath::CentsToFreqRatio(((double) itEvent->Param.Pitch.Pitch / 8192.0) * 200.0); // +-two semitones = +-200 cents  
         finalSynthesisParameters.fFinalPitch *= pitch;  
         PitchBend = pitch;  
218      }      }
219    
220      void Voice::processCutoffEvent(RTList<Event>::Iterator& itEvent) {      Voice::EGInfo Voice::CalculateEG2ControllerInfluence(double eg2ControllerValue) {
221          int ccvalue = itEvent->Param.CC.Value;          EGInfo eg;
222          if (VCFCutoffCtrl.value == ccvalue) return;          eg.Attack  = (pRegion->EG2ControllerAttackInfluence)  ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerAttackInfluence)  * eg2ControllerValue : 1.0;
223          VCFCutoffCtrl.value == ccvalue;          eg.Decay   = (pRegion->EG2ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerDecayInfluence)   * eg2ControllerValue : 1.0;
224          if (pDimRgn->VCFCutoffControllerInvert)  ccvalue = 127 - ccvalue;          eg.Release = (pRegion->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerReleaseInfluence) * eg2ControllerValue : 1.0;
         if (ccvalue < pDimRgn->VCFVelocityScale) ccvalue = pDimRgn->VCFVelocityScale;  
         float cutoff = CutoffBase * float(ccvalue);  
         if (cutoff > 127.0f) cutoff = 127.0f;  
225    
226          VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of fFinalCutoff next time          return eg;
         fFinalCutoff = cutoff;  
227      }      }
228    
229      void Voice::processResonanceEvent(RTList<Event>::Iterator& itEvent) {      void Voice::InitLFO1() {
230          // convert absolute controller value to differential          uint16_t lfo1_internal_depth;
231          const int ctrldelta = itEvent->Param.CC.Value - VCFResonanceCtrl.value;          switch (pRegion->LFO1Controller) {
232          VCFResonanceCtrl.value = itEvent->Param.CC.Value;              case ::gig::lfo1_ctrl_internal:
233          const float resonancedelta = (float) ctrldelta;                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
234          fFinalResonance += resonancedelta;                  pLFO1->ExtController = 0; // no external controller
235          // needed for initialization of parameter                  bLFO1Enabled         = (lfo1_internal_depth > 0);
236          VCFResonanceCtrl.fvalue = itEvent->Param.CC.Value;                  break;
237      }              case ::gig::lfo1_ctrl_modwheel:
238                    lfo1_internal_depth  = 0;
239      /**                  pLFO1->ExtController = 1; // MIDI controller 1
240       *  Synthesizes the current audio fragment for this voice.                  bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
241       *                  break;
242       *  @param Samples - number of sample points to be rendered in this audio              case ::gig::lfo1_ctrl_breath:
243       *                   fragment cycle                  lfo1_internal_depth  = 0;
244       *  @param pSrc    - pointer to input sample data                  pLFO1->ExtController = 2; // MIDI controller 2
245       *  @param Skip    - number of sample points to skip in output buffer                  bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
246       */                  break;
247      void Voice::Synthesize(uint Samples, sample_t* pSrc, uint Skip) {              case ::gig::lfo1_ctrl_internal_modwheel:
248          finalSynthesisParameters.pOutLeft  = &pEngineChannel->pChannelLeft->Buffer()[Skip];                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
249          finalSynthesisParameters.pOutRight = &pEngineChannel->pChannelRight->Buffer()[Skip];                  pLFO1->ExtController = 1; // MIDI controller 1
250          finalSynthesisParameters.pSrc      = pSrc;                  bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
251                    break;
252          RTList<Event>::Iterator itCCEvent = pEngineChannel->pEvents->first();              case ::gig::lfo1_ctrl_internal_breath:
253          RTList<Event>::Iterator itNoteEvent = pEngineChannel->pMIDIKeyInfo[MIDIKey].pEvents->first();                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
254                    pLFO1->ExtController = 2; // MIDI controller 2
255          if (itTriggerEvent) { // skip events that happened before this voice was triggered                  bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
256              while (itCCEvent && itCCEvent->FragmentPos() <= Skip) ++itCCEvent;                  break;
257              // we can't simply compare the timestamp here, because note events              default:
258              // might happen on the same time stamp, so we have to deal on the                  lfo1_internal_depth  = 0;
259              // actual sequence the note events arrived instead (see bug #112)                  pLFO1->ExtController = 0; // no external controller
260              for (; itNoteEvent; ++itNoteEvent) {                  bLFO1Enabled         = false;
261                  if (itTriggerEvent == itNoteEvent) {          }
262                      ++itNoteEvent;          if (bLFO1Enabled) {
263                      break;              pLFO1->trigger(pRegion->LFO1Frequency,
264                  }                             start_level_min,
265              }                             lfo1_internal_depth,
266                               pRegion->LFO1ControlDepth,
267                               pRegion->LFO1FlipPhase,
268                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
269                pLFO1->update(pLFO1->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO1->ExtController] : 0);
270          }          }
271        }
272    
273          uint killPos;      void Voice::InitLFO2() {
274          if (itKillEvent) {          uint16_t lfo2_internal_depth;
275              int maxFadeOutPos = Samples - pEngine->MinFadeOutSamples;          switch (pRegion->LFO2Controller) {
276              if (maxFadeOutPos < 0) {              case ::gig::lfo2_ctrl_internal:
277                  // There's not enough space in buffer to do a fade out                  lfo2_internal_depth  = pRegion->LFO2InternalDepth;
278                  // from max volume (this can only happen for audio                  pLFO2->ExtController = 0; // no external controller
279                  // drivers that use Samples < MaxSamplesPerCycle).                  bLFO2Enabled         = (lfo2_internal_depth > 0);
280                  // End the EG1 here, at pos 0, with a shorter max fade                  break;
281                  // out time.              case ::gig::lfo2_ctrl_modwheel:
282                  EG1.enterFadeOutStage(Samples / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);                  lfo2_internal_depth  = 0;
283                  itKillEvent = Pool<Event>::Iterator();                  pLFO2->ExtController = 1; // MIDI controller 1
284              } else {                  bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
285                  killPos = RTMath::Min(itKillEvent->FragmentPos(), maxFadeOutPos);                  break;
286              }              case ::gig::lfo2_ctrl_foot:
287                    lfo2_internal_depth  = 0;
288                    pLFO2->ExtController = 4; // MIDI controller 4
289                    bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
290                    break;
291                case ::gig::lfo2_ctrl_internal_modwheel:
292                    lfo2_internal_depth  = pRegion->LFO2InternalDepth;
293                    pLFO2->ExtController = 1; // MIDI controller 1
294                    bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
295                    break;
296                case ::gig::lfo2_ctrl_internal_foot:
297                    lfo2_internal_depth  = pRegion->LFO2InternalDepth;
298                    pLFO2->ExtController = 4; // MIDI controller 4
299                    bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
300                    break;
301                default:
302                    lfo2_internal_depth  = 0;
303                    pLFO2->ExtController = 0; // no external controller
304                    bLFO2Enabled         = false;
305            }
306            if (bLFO2Enabled) {
307                pLFO2->trigger(pRegion->LFO2Frequency,
308                               start_level_max,
309                               lfo2_internal_depth,
310                               pRegion->LFO2ControlDepth,
311                               pRegion->LFO2FlipPhase,
312                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
313                pLFO2->update(pLFO2->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO2->ExtController] : 0);
314          }          }
315        }
316    
317          uint i = Skip;      void Voice::InitLFO3() {
318          while (i < Samples) {          uint16_t lfo3_internal_depth;
319              int iSubFragmentEnd = RTMath::Min(i + CONFIG_DEFAULT_SUBFRAGMENT_SIZE, Samples);          switch (pRegion->LFO3Controller) {
320                case ::gig::lfo3_ctrl_internal:
321              // initialize all final synthesis parameters                  lfo3_internal_depth  = pRegion->LFO3InternalDepth;
322              finalSynthesisParameters.fFinalPitch = PitchBase * PitchBend;                  pLFO3->ExtController = 0; // no external controller
323              fFinalCutoff    = VCFCutoffCtrl.fvalue;                  bLFO3Enabled         = (lfo3_internal_depth > 0);
324              fFinalResonance = VCFResonanceCtrl.fvalue;                  break;
325                case ::gig::lfo3_ctrl_modwheel:
326              // process MIDI control change and pitchbend events for this subfragment                  lfo3_internal_depth  = 0;
327              processCCEvents(itCCEvent, iSubFragmentEnd);                  pLFO3->ExtController = 1; // MIDI controller 1
328                    bLFO3Enabled         = (pRegion->LFO3ControlDepth > 0);
329              float fFinalVolume = VolumeSmoother.render() * CrossfadeSmoother.render();                  break;
330  #ifdef CONFIG_PROCESS_MUTED_CHANNELS              case ::gig::lfo3_ctrl_aftertouch:
331              if (pEngineChannel->GetMute()) fFinalVolume = 0;                  lfo3_internal_depth  = 0;
332  #endif                  pLFO3->ExtController = 128;
333                    bLFO3Enabled         = true;
334              // process transition events (note on, note off & sustain pedal)                  break;
335              processTransitionEvents(itNoteEvent, iSubFragmentEnd);              case ::gig::lfo3_ctrl_internal_modwheel:
336                    lfo3_internal_depth  = pRegion->LFO3InternalDepth;
337              // if the voice was killed in this subfragment, or if the                  pLFO3->ExtController = 1; // MIDI controller 1
338              // filter EG is finished, switch EG1 to fade out stage                  bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
339              if ((itKillEvent && killPos <= iSubFragmentEnd) ||                  break;
340                  (SYNTHESIS_MODE_GET_FILTER(SynthesisMode) &&              case ::gig::lfo3_ctrl_internal_aftertouch:
341                   EG2.getSegmentType() == EGADSR::segment_end)) {                  lfo3_internal_depth  = pRegion->LFO3InternalDepth;
342                  EG1.enterFadeOutStage();                  pLFO3->ExtController = 128;
343                  itKillEvent = Pool<Event>::Iterator();                  bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
344              }                  break;
345                default:
346                    lfo3_internal_depth  = 0;
347                    pLFO3->ExtController = 0; // no external controller
348                    bLFO3Enabled         = false;
349            }
350            if (bLFO3Enabled) {
351                pLFO3->trigger(pRegion->LFO3Frequency,
352                               start_level_mid,
353                               lfo3_internal_depth,
354                               pRegion->LFO3ControlDepth,
355                               false,
356                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
357                pLFO3->update(pLFO3->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO3->ExtController] : 0);
358            }
359        }
360    
361              // process envelope generators      float Voice::CalculateCutoffBase(uint8_t MIDIKeyVelocity) {
362              switch (EG1.getSegmentType()) {          float cutoff = pRegion->GetVelocityCutoff(MIDIKeyVelocity);
363                  case EGADSR::segment_lin:          if (pRegion->VCFKeyboardTracking) {
364                      fFinalVolume *= EG1.processLin();              cutoff *= RTMath::CentsToFreqRatioUnlimited((MIDIKey - pRegion->VCFKeyboardTrackingBreakpoint) * 100);
365                      break;          }
366                  case EGADSR::segment_exp:          return cutoff;
367                      fFinalVolume *= EG1.processExp();      }
368                      break;  
369                  case EGADSR::segment_end:      float Voice::CalculateFinalCutoff(float cutoffBase) {
370                      fFinalVolume *= EG1.getLevel();          int cvalue;
371                      break; // noop          if (VCFCutoffCtrl.controller) {
372              }              cvalue = GetGigEngineChannel()->ControllerTable[VCFCutoffCtrl.controller];
373              switch (EG2.getSegmentType()) {              if (pRegion->VCFCutoffControllerInvert) cvalue = 127 - cvalue;
374                  case EGADSR::segment_lin:              // VCFVelocityScale in this case means Minimum cutoff
375                      fFinalCutoff *= EG2.processLin();              if (cvalue < pRegion->VCFVelocityScale) cvalue = pRegion->VCFVelocityScale;
376                      break;          }
377                  case EGADSR::segment_exp:          else {
378                      fFinalCutoff *= EG2.processExp();              cvalue = pRegion->VCFCutoff;
379                      break;          }
380                  case EGADSR::segment_end:          float fco = cutoffBase * float(cvalue);
381                      fFinalCutoff *= EG2.getLevel();          if (fco > 127.0f) fco = 127.0f;
                     break; // noop  
             }  
             if (EG3.active()) finalSynthesisParameters.fFinalPitch *= EG3.render();  
382    
383              // process low frequency oscillators          return fco;
384              if (bLFO1Enabled) fFinalVolume *= (1.0f - pLFO1->render());      }
             if (bLFO2Enabled) fFinalCutoff *= pLFO2->render();  
             if (bLFO3Enabled) finalSynthesisParameters.fFinalPitch *= RTMath::CentsToFreqRatio(pLFO3->render());  
   
             // if filter enabled then update filter coefficients  
             if (SYNTHESIS_MODE_GET_FILTER(SynthesisMode)) {  
                 finalSynthesisParameters.filterLeft.SetParameters(fFinalCutoff, fFinalResonance, pEngine->SampleRate);  
                 finalSynthesisParameters.filterRight.SetParameters(fFinalCutoff, fFinalResonance, pEngine->SampleRate);  
             }  
385    
386              // do we need resampling?      uint8_t Voice::GetVCFCutoffCtrl() {
387              const float __PLUS_ONE_CENT  = 1.000577789506554859250142541782224725466f;          uint8_t ctrl;
388              const float __MINUS_ONE_CENT = 0.9994225441413807496009516495583113737666f;          switch (pRegion->VCFCutoffController) {
389              const bool bResamplingRequired = !(finalSynthesisParameters.fFinalPitch <= __PLUS_ONE_CENT &&              case ::gig::vcf_cutoff_ctrl_modwheel:
390                                                 finalSynthesisParameters.fFinalPitch >= __MINUS_ONE_CENT);                  ctrl = 1;
391              SYNTHESIS_MODE_SET_INTERPOLATE(SynthesisMode, bResamplingRequired);                  break;
392                case ::gig::vcf_cutoff_ctrl_effect1:
393              // prepare final synthesis parameters structure                  ctrl = 12;
394              finalSynthesisParameters.uiToGo            = iSubFragmentEnd - i;                  break;
395  #ifdef CONFIG_INTERPOLATE_VOLUME              case ::gig::vcf_cutoff_ctrl_effect2:
396              finalSynthesisParameters.fFinalVolumeDeltaLeft  =                  ctrl = 13;
397                  (fFinalVolume * VolumeLeft  * PanLeftSmoother.render() -                  break;
398                   finalSynthesisParameters.fFinalVolumeLeft) / finalSynthesisParameters.uiToGo;              case ::gig::vcf_cutoff_ctrl_breath:
399              finalSynthesisParameters.fFinalVolumeDeltaRight =                  ctrl = 2;
400                  (fFinalVolume * VolumeRight * PanRightSmoother.render() -                  break;
401                   finalSynthesisParameters.fFinalVolumeRight) / finalSynthesisParameters.uiToGo;              case ::gig::vcf_cutoff_ctrl_foot:
402  #else                  ctrl = 4;
403              finalSynthesisParameters.fFinalVolumeLeft  =                  break;
404                  fFinalVolume * VolumeLeft  * PanLeftSmoother.render();              case ::gig::vcf_cutoff_ctrl_sustainpedal:
405              finalSynthesisParameters.fFinalVolumeRight =                  ctrl = 64;
406                  fFinalVolume * VolumeRight * PanRightSmoother.render();                  break;
407  #endif              case ::gig::vcf_cutoff_ctrl_softpedal:
408              // render audio for one subfragment                  ctrl = 67;
409              RunSynthesisFunction(SynthesisMode, &finalSynthesisParameters, &loop);                  break;
410                case ::gig::vcf_cutoff_ctrl_genpurpose7:
411              // stop the rendering if volume EG is finished                  ctrl = 82;
412              if (EG1.getSegmentType() == EGADSR::segment_end) break;                  break;
413                case ::gig::vcf_cutoff_ctrl_genpurpose8:
414              const double newPos = Pos + (iSubFragmentEnd - i) * finalSynthesisParameters.fFinalPitch;                  ctrl = 83;
415                    break;
416              // increment envelopes' positions              case ::gig::vcf_cutoff_ctrl_aftertouch:
417              if (EG1.active()) {                  ctrl = 128;
418                    break;
419                  // 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              case ::gig::vcf_cutoff_ctrl_none:
420                  if (pDimRgn->SampleLoops && Pos <= pDimRgn->pSampleLoops[0].LoopStart && pDimRgn->pSampleLoops[0].LoopStart < newPos) {              default:
421                      EG1.update(EGADSR::event_hold_end, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);                  ctrl = 0;
422                  }                  break;
423            }
424    
425                  EG1.increment(1);          return ctrl;
426                  if (!EG1.toStageEndLeft()) EG1.update(EGADSR::event_stage_end, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);      }
             }  
             if (EG2.active()) {  
                 EG2.increment(1);  
                 if (!EG2.toStageEndLeft()) EG2.update(EGADSR::event_stage_end, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
             }  
             EG3.increment(1);  
             if (!EG3.toEndLeft()) EG3.update(); // neutralize envelope coefficient if end reached  
427    
428              Pos = newPos;      uint8_t Voice::GetVCFResonanceCtrl() {
429              i = iSubFragmentEnd;          uint8_t ctrl;
430            switch (pRegion->VCFResonanceController) {
431                case ::gig::vcf_res_ctrl_genpurpose3:
432                    ctrl = 18;
433                    break;
434                case ::gig::vcf_res_ctrl_genpurpose4:
435                    ctrl = 19;
436                    break;
437                case ::gig::vcf_res_ctrl_genpurpose5:
438                    ctrl = 80;
439                    break;
440                case ::gig::vcf_res_ctrl_genpurpose6:
441                    ctrl = 81;
442                    break;
443                case ::gig::vcf_res_ctrl_none:
444                default:
445                    ctrl = 0;
446          }          }
     }  
447    
448      /** @brief Update current portamento position.          return ctrl;
449       *      }
      * Will be called when portamento mode is enabled to get the final  
      * portamento position of this active voice from where the next voice(s)  
      * might continue to slide on.  
      *  
      * @param itNoteOffEvent - event which causes this voice to die soon  
      */  
     void Voice::UpdatePortamentoPos(Pool<Event>::Iterator& itNoteOffEvent) {  
         const float fFinalEG3Level = EG3.level(itNoteOffEvent->FragmentPos());  
         pEngineChannel->PortamentoPos = (float) MIDIKey + RTMath::FreqRatioToCents(fFinalEG3Level) * 0.01f;  
     }  
   
     /**  
      *  Immediately kill the voice. This method should not be used to kill  
      *  a normal, active voice, because it doesn't take care of things like  
      *  fading down the volume level to avoid clicks and regular processing  
      *  until the kill event actually occured!  
      *  
      * If it's necessary to know when the voice's disk stream was actually  
      * deleted, then one can set the optional @a bRequestNotification  
      * parameter and this method will then return the handle of the disk  
      * stream (unique identifier) and one can use this handle to poll the  
      * disk thread if this stream has been deleted. In any case this method  
      * will return immediately and will not block until the stream actually  
      * was deleted.  
      *  
      * @param bRequestNotification - (optional) whether the disk thread shall  
      *                                provide a notification once it deleted  
      *                               the respective disk stream  
      *                               (default=false)  
      * @returns handle to the voice's disk stream or @c Stream::INVALID_HANDLE  
      *          if the voice did not use a disk stream at all  
      * @see Kill()  
      */  
     Stream::Handle Voice::KillImmediately(bool bRequestNotification) {  
         Stream::Handle hStream = Stream::INVALID_HANDLE;  
         if (DiskVoice && DiskStreamRef.State != Stream::state_unused) {  
             pDiskThread->OrderDeletionOfStream(&DiskStreamRef, bRequestNotification);  
             hStream = DiskStreamRef.hStream;  
         }  
         Reset();  
         return hStream;  
     }  
   
     /**  
      *  Kill the voice in regular sense. Let the voice render audio until  
      *  the kill event actually occured and then fade down the volume level  
      *  very quickly and let the voice die finally. Unlike a normal release  
      *  of a voice, a kill process cannot be cancalled and is therefore  
      *  usually used for voice stealing and key group conflicts.  
      *  
      *  @param itKillEvent - event which caused the voice to be killed  
      */  
     void Voice::Kill(Pool<Event>::Iterator& itKillEvent) {  
         #if CONFIG_DEVMODE  
         if (!itKillEvent) dmsg(1,("gig::Voice::Kill(): ERROR, !itKillEvent !!!\n"));  
         if (itKillEvent && !itKillEvent.isValid()) dmsg(1,("gig::Voice::Kill(): ERROR, itKillEvent invalid !!!\n"));  
         #endif // CONFIG_DEVMODE  
450    
451          if (itTriggerEvent && itKillEvent->FragmentPos() <= itTriggerEvent->FragmentPos()) return;      void Voice::TriggerEG1(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
452          this->itKillEvent = itKillEvent;          EG1.trigger(pRegion->EG1PreAttack,
453                        RTMath::Max(pRegion->EG1Attack, 0.0316) * egInfo.Attack,
454                        pRegion->EG1Hold,
455                        pRegion->EG1Decay1 * egInfo.Decay * velrelease,
456                        pRegion->EG1Decay2 * egInfo.Decay * velrelease,
457                        pRegion->EG1InfiniteSustain,
458                        pRegion->EG1Sustain,
459                        RTMath::Max(pRegion->EG1Release * velrelease, 0.014) * egInfo.Release,
460                        velocityAttenuation,
461                        sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
462        }
463    
464        void Voice::TriggerEG2(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
465            EG2.trigger(uint(RgnInfo.EG2PreAttack),
466                        RgnInfo.EG2Attack * egInfo.Attack,
467                        false,
468                        RgnInfo.EG2Decay1 * egInfo.Decay * velrelease,
469                        RgnInfo.EG2Decay2 * egInfo.Decay * velrelease,
470                        RgnInfo.EG2InfiniteSustain,
471                        uint(RgnInfo.EG2Sustain),
472                        RgnInfo.EG2Release * egInfo.Release * velrelease,
473                        velocityAttenuation,
474                        sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
475        }
476    
477        void Voice::ProcessGroupEvent(RTList<Event>::Iterator& itEvent) {
478            dmsg(4,("Voice %x processGroupEvents event type=%d", this, itEvent->Type));
479    
480            // TODO: The SustainPedal condition could be wrong, maybe the
481            // check should be if this Voice is in release stage or is a
482            // release sample instead. Need to test this in GSt.
483            // -- Andreas
484            //
485            // Commented sustain pedal check out. I don't think voices of the same
486            // note should be stopped at all, because it doesn't sound naturally
487            // with a drumkit.
488            // -- Christian, 2013-01-08
489            if (itEvent->Param.Note.Key != MIDIKey /*||
490                !GetGigEngineChannel()->SustainPedal*/) {
491                dmsg(4,("Voice %x - kill", this));
492    
493                // kill the voice fast
494                pEG1->enterFadeOutStage();
495            }
496        }
497    
498        void Voice::CalculateFadeOutCoeff(float FadeOutTime, float SampleRate) {
499            EG1.CalculateFadeOutCoeff(FadeOutTime, SampleRate);
500        }
501    
502        int Voice::CalculatePan(uint8_t pan) {
503            int p;
504            // Gst behaviour: -64 and 63 are special cases
505            if (RgnInfo.Pan == -64)     p = pan * 2 - 127;
506            else if (RgnInfo.Pan == 63) p = pan * 2;
507            else                        p = pan + RgnInfo.Pan;
508    
509            if (p < 0) return 0;
510            if (p > 127) return 127;
511            return p;
512      }      }
513    
514  }} // namespace LinuxSampler::gig  }} // namespace LinuxSampler::gig
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