/[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 829 by schoenebeck, Sat Jan 14 14:07:47 2006 UTC revision 3561 by schoenebeck, Fri Aug 23 11:44:00 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    
     const float Voice::FILTER_CUTOFF_COEFF(CalculateFilterCutoffCoeff());  
   
     float Voice::CalculateFilterCutoffCoeff() {  
         return log(CONFIG_FILTER_CUTOFF_MAX / CONFIG_FILTER_CUTOFF_MIN);  
     }  
   
36      Voice::Voice() {      Voice::Voice() {
37          pEngine     = NULL;          pEngine = NULL;
38          pDiskThread = NULL;          pEG1 = &EG1;
39          PlaybackState = playback_state_end;          pEG2 = &EG2;
         pLFO1 = new LFOUnsigned(1.0f);  // amplitude EG (0..1 range)  
         pLFO2 = new LFOUnsigned(1.0f);  // filter EG (0..1 range)  
         pLFO3 = new LFOSigned(1200.0f); // pitch EG (-1200..+1200 range)  
         KeyGroup = 0;  
         SynthesisMode = 0; // set all mode bits to 0 first  
         // select synthesis implementation (currently either pure C++ or MMX+SSE(1))  
         #if CONFIG_ASM && ARCH_X86  
         SYNTHESIS_MODE_SET_IMPLEMENTATION(SynthesisMode, Features::supportsMMX() && Features::supportsSSE());  
         #else  
         SYNTHESIS_MODE_SET_IMPLEMENTATION(SynthesisMode, false);  
         #endif  
         SYNTHESIS_MODE_SET_PROFILING(SynthesisMode, Profiler::isEnabled());  
   
         finalSynthesisParameters.filterLeft.Reset();  
         finalSynthesisParameters.filterRight.Reset();  
40      }      }
41    
42      Voice::~Voice() {      Voice::~Voice() {
         if (pLFO1) delete pLFO1;  
         if (pLFO2) delete pLFO2;  
         if (pLFO3) delete pLFO3;  
43      }      }
44    
45      void Voice::SetEngine(Engine* pEngine) {      EngineChannel* Voice::GetGigEngineChannel() {
46          this->pEngine     = pEngine;          return static_cast<EngineChannel*>(pEngineChannel);
         this->pDiskThread = pEngine->pDiskThread;  
         dmsg(6,("Voice::SetEngine()\n"));  
47      }      }
48    
49      /**      void Voice::SetEngine(LinuxSampler::Engine* pEngine) {
50       *  Initializes and triggers the voice, a disk stream will be launched if          Engine* engine = static_cast<Engine*>(pEngine);
51       *  needed.          this->pEngine     = engine;
52       *          this->pDiskThread = engine->pDiskThread;
53       *  @param pEngineChannel - engine channel on which this voice was ordered          dmsg(6,("Voice::SetEngine()\n"));
54       *  @param itNoteOnEvent  - event that caused triggering of this voice      }
      *  @param PitchBend      - MIDI detune factor (-8192 ... +8191)  
      *  @param pDimRgn        - points to the dimension region which provides sample wave(s) and articulation data  
      *  @param VoiceType      - type of this voice  
      *  @param iKeyGroup      - a value > 0 defines a key group in which this voice is member of  
      *  @returns 0 on success, a value < 0 if the voice wasn't triggered  
      *           (either due to an error or e.g. because no region is  
      *           defined for the given key)  
      */  
     int Voice::Trigger(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent, int PitchBend, ::gig::DimensionRegion* pDimRgn, type_t VoiceType, int iKeyGroup) {  
         this->pEngineChannel = pEngineChannel;  
         this->pDimRgn        = pDimRgn;  
   
         #if CONFIG_DEVMODE  
         if (itNoteOnEvent->FragmentPos() > pEngine->MaxSamplesPerCycle) { // just a sanity check for debugging  
             dmsg(1,("Voice::Trigger(): ERROR, TriggerDelay > Totalsamples\n"));  
         }  
         #endif // CONFIG_DEVMODE  
   
         Type            = VoiceType;  
         MIDIKey         = itNoteOnEvent->Param.Note.Key;  
         PlaybackState   = playback_state_init; // mark voice as triggered, but no audio rendered yet  
         Delay           = itNoteOnEvent->FragmentPos();  
         itTriggerEvent  = itNoteOnEvent;  
         itKillEvent     = Pool<Event>::Iterator();  
         KeyGroup        = iKeyGroup;  
         pSample         = pDimRgn->pSample; // sample won't change until the voice is finished  
   
         // calculate volume  
         const double velocityAttenuation = pDimRgn->GetVelocityAttenuation(itNoteOnEvent->Param.Note.Velocity);  
   
         Volume = velocityAttenuation / 32768.0f; // we downscale by 32768 to convert from int16 value range to DSP value range (which is -1.0..1.0)  
   
         Volume *= pDimRgn->SampleAttenuation;  
   
         // the volume of release triggered samples depends on note length  
         if (Type == type_release_trigger) {  
             float noteLength = float(pEngine->FrameTime + Delay -  
                                      pEngineChannel->pMIDIKeyInfo[MIDIKey].NoteOnTime) / pEngine->SampleRate;  
             float attenuation = 1 - 0.01053 * (256 >> pDimRgn->ReleaseTriggerDecay) * noteLength;  
             if (attenuation <= 0) return -1;  
             Volume *= attenuation;  
         }  
55    
56          // select channel mode (mono or stereo)      Voice::SampleInfo Voice::GetSampleInfo() {
57          SYNTHESIS_MODE_SET_CHANNELS(SynthesisMode, pSample->Channels == 2);          SampleInfo si;
58            si.SampleRate       = pSample->SamplesPerSecond;
59            si.ChannelCount     = pSample->Channels;
60            si.FrameSize        = pSample->FrameSize;
61            si.BitDepth         = pSample->BitDepth;
62            si.TotalFrameCount  = (uint)pSample->SamplesTotal;
63    
64          // get starting crossfade volume level          si.HasLoops       = pRegion->SampleLoops;
65          switch (pDimRgn->AttenuationController.type) {          si.LoopStart      = (si.HasLoops) ? pRegion->pSampleLoops[0].LoopStart  : 0;
66              case ::gig::attenuation_ctrl_t::type_channelaftertouch:          si.LoopLength     = (si.HasLoops) ? pRegion->pSampleLoops[0].LoopLength : 0;
67                  CrossfadeVolume = 1.0f; //TODO: aftertouch not supported yet          si.LoopPlayCount  = pSample->LoopPlayCount;
68                  break;          si.Unpitched      = !pRegion->PitchTrack;
             case ::gig::attenuation_ctrl_t::type_velocity:  
                 CrossfadeVolume = CrossfadeAttenuation(itNoteOnEvent->Param.Note.Velocity);  
                 break;  
             case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate  
                 CrossfadeVolume = CrossfadeAttenuation(pEngineChannel->ControllerTable[pDimRgn->AttenuationController.controller_number]);  
                 break;  
             case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined  
             default:  
                 CrossfadeVolume = 1.0f;  
         }  
69    
70          PanLeft  = 1.0f - float(RTMath::Max(pDimRgn->Pan, 0)) /  63.0f;          return si;
71          PanRight = 1.0f - float(RTMath::Min(pDimRgn->Pan, 0)) / -64.0f;      }
72    
73          finalSynthesisParameters.dPos = pDimRgn->SampleStartOffset; // offset where we should start playback of sample (0 - 2000 sample points)      Voice::RegionInfo Voice::GetRegionInfo() {
74          Pos = pDimRgn->SampleStartOffset;          RegionInfo ri;
75            ri.UnityNote = pRegion->UnityNote;
76            ri.FineTune  = pRegion->FineTune;
77            ri.Pan       = pRegion->Pan;
78            ri.SampleStartOffset = pRegion->SampleStartOffset;
79    
80          // Check if the sample needs disk streaming or is too short for that          ri.EG2PreAttack        = pRegion->EG2PreAttack;
81          long cachedsamples = pSample->GetCache().Size / pSample->FrameSize;          ri.EG2Attack           = pRegion->EG2Attack;
82          DiskVoice          = cachedsamples < pSample->SamplesTotal;          ri.EG2Decay1           = pRegion->EG2Decay1;
83            ri.EG2Decay2           = pRegion->EG2Decay2;
84            ri.EG2Sustain          = pRegion->EG2Sustain;
85            ri.EG2InfiniteSustain  = pRegion->EG2InfiniteSustain;
86            ri.EG2Release          = pRegion->EG2Release;
87    
88          if (DiskVoice) { // voice to be streamed from disk          ri.EG3Attack     = pRegion->EG3Attack;
89              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)          ri.EG3Depth      = pRegion->EG3Depth;
90            ri.VCFEnabled    = pRegion->VCFEnabled;
91            ri.VCFType       = Filter::vcf_type_t(pRegion->VCFType);
92            ri.VCFResonance  = pRegion->VCFResonance;
93    
94              // check if there's a loop defined which completely fits into the cached (RAM) part of the sample          ri.ReleaseTriggerDecay = 0.01053 * (256 >> pRegion->ReleaseTriggerDecay);
             RAMLoop = (pSample->Loops && pSample->LoopEnd <= MaxRAMPos);  
95    
96              if (pDiskThread->OrderNewStream(&DiskStreamRef, pSample, MaxRAMPos, !RAMLoop) < 0) {          return ri;
97                  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 = (pSample->Loops != 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       = pSample->LoopStart;  
             loop.uiEnd         = pSample->LoopEnd;  
             loop.uiSize        = pSample->LoopSize;  
         }  
   
         // 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;  
98    
99              // calculate influence of EG1 controller on EG1's parameters      Voice::InstrumentInfo Voice::GetInstrumentInfo() {
100              // (eg1attack is different from the others)          InstrumentInfo ii;
101              double eg1attack  = (pDimRgn->EG1ControllerAttackInfluence)  ?          ii.FineTune = GetGigEngineChannel()->pInstrument->FineTune;
102                  1 + 0.031 * (double) (pDimRgn->EG1ControllerAttackInfluence == 1 ?          ii.PitchbendRange = GetGigEngineChannel()->pInstrument->PitchbendRange;
                                       1 : 1 << pDimRgn->EG1ControllerAttackInfluence) * eg1controllervalue : 1.0;  
             double eg1decay   = (pDimRgn->EG1ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pDimRgn->EG1ControllerDecayInfluence)   * eg1controllervalue : 1.0;  
             double eg1release = (pDimRgn->EG1ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pDimRgn->EG1ControllerReleaseInfluence) * eg1controllervalue : 1.0;  
   
             EG1.trigger(pDimRgn->EG1PreAttack,  
                         pDimRgn->EG1Attack * eg1attack,  
                         pDimRgn->EG1Hold,  
                         pDimRgn->EG1Decay1 * eg1decay * velrelease,  
                         pDimRgn->EG1Decay2 * eg1decay * velrelease,  
                         pDimRgn->EG1InfiniteSustain,  
                         pDimRgn->EG1Sustain,  
                         pDimRgn->EG1Release * eg1release * velrelease,  
                         velocityAttenuation,  
                         pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
         }  
103    
104            return ii;
105        }
106    
107          // setup EG 2 (VCF Cutoff EG)      double Voice::GetSampleAttenuation() {
108          {          return pRegion->SampleAttenuation;
109              // 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;  
110    
111              // calculate influence of EG2 controller on EG2's parameters      double Voice::GetVelocityAttenuation(uint8_t MIDIKeyVelocity) {
112              double eg2attack  = (pDimRgn->EG2ControllerAttackInfluence)  ? 1 + 0.00775 * (double) (1 << pDimRgn->EG2ControllerAttackInfluence)  * eg2controllervalue : 1.0;          return pRegion->GetVelocityAttenuation(MIDIKeyVelocity);
113              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);  
         }  
114    
115        double Voice::GetVelocityRelease(uint8_t MIDIKeyVelocity) {
116            return pRegion->GetVelocityRelease(MIDIKeyVelocity);
117        }
118    
119          // setup LFO 2 (VCF Cutoff LFO)      void Voice::ProcessCCEvent(RTList<Event>::Iterator& itEvent) {
120          {          if (itEvent->Type == Event::type_control_change && itEvent->Param.CC.Controller) { // if (valid) MIDI control change event
121              uint16_t lfo2_internal_depth;              if (pRegion->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&
122              switch (pDimRgn->LFO2Controller) {                  itEvent->Param.CC.Controller == pRegion->AttenuationController.controller_number) {
123                  case ::gig::lfo2_ctrl_internal:                  CrossfadeSmoother.update(AbstractEngine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.CC.Value)]);
                     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;  
124              }              }
             if (bLFO2Enabled) pLFO2->trigger(pDimRgn->LFO2Frequency,  
                                              start_level_max,  
                                              lfo2_internal_depth,  
                                              pDimRgn->LFO2ControlDepth,  
                                              pDimRgn->LFO2FlipPhase,  
                                              pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
125          }          }
126        }
127    
128        void Voice::ProcessChannelPressureEvent(RTList<Event>::Iterator& itEvent) {
129          // setup LFO 3 (VCO LFO)          if (itEvent->Type == Event::type_channel_pressure) { // if (valid) MIDI channel pressure (aftertouch) event
130          {              if (pRegion->AttenuationController.type == ::gig::attenuation_ctrl_t::type_channelaftertouch) {
131              uint16_t lfo3_internal_depth;                  CrossfadeSmoother.update(AbstractEngine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.ChannelPressure.Value)]);
             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;  
132              }              }
             if (bLFO3Enabled) pLFO3->trigger(pDimRgn->LFO3Frequency,  
                                              start_level_mid,  
                                              lfo3_internal_depth,  
                                              pDimRgn->LFO3ControlDepth,  
                                              false,  
                                              pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
133          }          }
134        }
135    
136        void Voice::ProcessPolyphonicKeyPressureEvent(RTList<Event>::Iterator& itEvent) {
137            // Not used so far
138        }
139    
140          #if CONFIG_FORCE_FILTER      void Voice::ProcessCutoffEvent(RTList<Event>::Iterator& itEvent) {
141          const bool bUseFilter = true;          int ccvalue = itEvent->Param.CC.Value;
142          #else // use filter only if instrument file told so          if (VCFCutoffCtrl.value == ccvalue) return;
143          const bool bUseFilter = pDimRgn->VCFEnabled;          VCFCutoffCtrl.value = ccvalue;
144          #endif // CONFIG_FORCE_FILTER          if (pRegion->VCFCutoffControllerInvert)  ccvalue = 127 - ccvalue;
145          SYNTHESIS_MODE_SET_FILTER(SynthesisMode, bUseFilter);          if (ccvalue < pRegion->VCFVelocityScale) ccvalue = pRegion->VCFVelocityScale;
146          if (bUseFilter) {          float cutoff = CutoffBase * float(ccvalue);
147              #ifdef CONFIG_OVERRIDE_CUTOFF_CTRL          if (cutoff > 127.0f) cutoff = 127.0f;
             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  
   
             #ifdef CONFIG_OVERRIDE_RESONANCE_CTRL  
             VCFResonanceCtrl.controller = CONFIG_OVERRIDE_RESONANCE_CTRL;  
             #else // use the one defined in the instrument file  
             switch (pDimRgn->VCFResonanceController) {  
                 case ::gig::vcf_res_ctrl_genpurpose3:  
                     VCFResonanceCtrl.controller = 18;  
                     break;  
                 case ::gig::vcf_res_ctrl_genpurpose4:  
                     VCFResonanceCtrl.controller = 19;  
                     break;  
                 case ::gig::vcf_res_ctrl_genpurpose5:  
                     VCFResonanceCtrl.controller = 80;  
                     break;  
                 case ::gig::vcf_res_ctrl_genpurpose6:  
                     VCFResonanceCtrl.controller = 81;  
                     break;  
                 case ::gig::vcf_res_ctrl_none:  
                 default:  
                     VCFResonanceCtrl.controller = 0;  
             }  
             #endif // CONFIG_OVERRIDE_RESONANCE_CTRL  
   
             #ifndef CONFIG_OVERRIDE_FILTER_TYPE  
             finalSynthesisParameters.filterLeft.SetType(pDimRgn->VCFType);  
             finalSynthesisParameters.filterRight.SetType(pDimRgn->VCFType);  
             #else // override filter type  
             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)  
             }  
             CutoffBase = cutoff;  
   
             int cvalue;  
             if (VCFCutoffCtrl.controller) {  
                 cvalue = pEngineChannel->ControllerTable[VCFCutoffCtrl.controller];  
                 if (pDimRgn->VCFCutoffControllerInvert) cvalue = 127 - cvalue;  
                 // VCFVelocityScale in this case means Minimum cutoff  
                 if (cvalue < pDimRgn->VCFVelocityScale) cvalue = pDimRgn->VCFVelocityScale;  
             }  
             else {  
                 cvalue = pDimRgn->VCFCutoff;  
             }  
             cutoff *= float(cvalue) * 0.00787402f; // (1 / 127)  
             if (cutoff > 1.0) cutoff = 1.0;  
             cutoff = (cutoff < 0.5 ? cutoff * 4826 - 1 : cutoff * 5715 - 449);  
             if (cutoff < 1.0) cutoff = 1.0;  
148    
149              // calculate resonance          VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of fFinalCutoff next time
150              float resonance = (float) (VCFResonanceCtrl.controller ? VCFResonanceCtrl.value : pDimRgn->VCFResonance) * 0.00787f; // 0.0..1.0          fFinalCutoff = cutoff;
151        }
152    
153              VCFCutoffCtrl.fvalue    = cutoff - 1.0;      double Voice::CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity) {
154              VCFResonanceCtrl.fvalue = resonance;          float crossfadeVolume;
155          }          switch (pRegion->AttenuationController.type) {
156          else {              case ::gig::attenuation_ctrl_t::type_channelaftertouch:
157              VCFCutoffCtrl.controller    = 0;                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[128])];
158              VCFResonanceCtrl.controller = 0;                  break;
159                case ::gig::attenuation_ctrl_t::type_velocity:
160                    crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(MIDIKeyVelocity)];
161                    break;
162                case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate
163                    crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[pRegion->AttenuationController.controller_number])];
164                    break;
165                case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined
166                default:
167                    crossfadeVolume = 1.0f;
168          }          }
169    
170          return 0; // success          return crossfadeVolume;
171      }      }
172    
173      /**      double Voice::GetEG1ControllerValue(uint8_t MIDIKeyVelocity) {
174       *  Renders the audio data for this voice for the current audio fragment.          double eg1controllervalue = 0;
175       *  The sample input data can either come from RAM (cached sample or sample          switch (pRegion->EG1Controller.type) {
176       *  part) or directly from disk. The output signal will be rendered by              case ::gig::eg1_ctrl_t::type_none: // no controller defined
177       *  resampling / interpolation. If this voice is a disk streaming voice and                  eg1controllervalue = 0;
178       *  the voice completely played back the cached RAM part of the sample, it                  break;
179       *  will automatically switch to disk playback for the next RenderAudio()              case ::gig::eg1_ctrl_t::type_channelaftertouch:
180       *  call.                  eg1controllervalue = GetGigEngineChannel()->ControllerTable[128];
181       *                  break;
182       *  @param Samples - number of samples to be rendered in this audio fragment cycle              case ::gig::eg1_ctrl_t::type_velocity:
183       */                  eg1controllervalue = MIDIKeyVelocity;
184      void Voice::Render(uint Samples) {                  break;
185                case ::gig::eg1_ctrl_t::type_controlchange: // MIDI control change controller
186          // select default values for synthesis mode bits                  eg1controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG1Controller.controller_number];
187          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 = 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);  
             }  
188          }          }
189            if (pRegion->EG1ControllerInvert) eg1controllervalue = 127 - eg1controllervalue;
190    
191            return eg1controllervalue;
192      }      }
193    
194      /**      Voice::EGInfo Voice::CalculateEG1ControllerInfluence(double eg1ControllerValue) {
195       * Process given list of MIDI control change and pitch bend events for          EGInfo eg;
196       * the given time.          // (eg1attack is different from the others)
197       *          if (pRegion->EG1Attack < 1e-8 && // attack in gig == 0
198       * @param itEvent - iterator pointing to the next event to be processed              (pRegion->EG1ControllerAttackInfluence == 0 ||
199       * @param End     - youngest time stamp where processing should be stopped               eg1ControllerValue <= 10)) { // strange GSt special case
200       */              eg.Attack = 0; // this will force the attack to be 0 in the call to EG1.trigger
201      void Voice::processCCEvents(RTList<Event>::Iterator& itEvent, uint End) {          } else {
202          for (; itEvent && itEvent->FragmentPos() <= End; ++itEvent) {              eg.Attack  = (pRegion->EG1ControllerAttackInfluence)  ?
203              if (itEvent->Type == Event::type_control_change &&                  1 + 0.031 * (double) (pRegion->EG1ControllerAttackInfluence == 1 ?
204                  itEvent->Param.CC.Controller) { // if (valid) MIDI control change event                                        1 : 1 << pRegion->EG1ControllerAttackInfluence) * eg1ControllerValue : 1.0;
205                  if (itEvent->Param.CC.Controller == VCFCutoffCtrl.controller) {          }
206                      processCutoffEvent(itEvent);          eg.Decay   = (pRegion->EG1ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerDecayInfluence)   * eg1ControllerValue : 1.0;
207                  }          eg.Release = (pRegion->EG1ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerReleaseInfluence) * eg1ControllerValue : 1.0;
208                  if (itEvent->Param.CC.Controller == VCFResonanceCtrl.controller) {  
209                      processResonanceEvent(itEvent);          return eg;
210                  }      }
211                  if (itEvent->Param.CC.Controller == pLFO1->ExtController) {  
212                      pLFO1->update(itEvent->Param.CC.Value);      double Voice::GetEG2ControllerValue(uint8_t MIDIKeyVelocity) {
213                  }          double eg2controllervalue = 0;
214                  if (itEvent->Param.CC.Controller == pLFO2->ExtController) {          switch (pRegion->EG2Controller.type) {
215                      pLFO2->update(itEvent->Param.CC.Value);              case ::gig::eg2_ctrl_t::type_none: // no controller defined
216                  }                  eg2controllervalue = 0;
217                  if (itEvent->Param.CC.Controller == pLFO3->ExtController) {                  break;
218                      pLFO3->update(itEvent->Param.CC.Value);              case ::gig::eg2_ctrl_t::type_channelaftertouch:
219                  }                  eg2controllervalue = GetGigEngineChannel()->ControllerTable[128];
220                  if (pDimRgn->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&                  break;
221                      itEvent->Param.CC.Controller == pDimRgn->AttenuationController.controller_number) {              case ::gig::eg2_ctrl_t::type_velocity:
222                      processCrossFadeEvent(itEvent);                  eg2controllervalue = MIDIKeyVelocity;
223                  }                  break;
224              } else if (itEvent->Type == Event::type_pitchbend) { // if pitch bend event              case ::gig::eg2_ctrl_t::type_controlchange: // MIDI control change controller
225                  processPitchEvent(itEvent);                  eg2controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG2Controller.controller_number];
226              }                  break;
227          }          }
228      }          if (pRegion->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue;
229    
230      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;  
     }  
   
     void Voice::processCrossFadeEvent(RTList<Event>::Iterator& itEvent) {  
         CrossfadeVolume = CrossfadeAttenuation(itEvent->Param.CC.Value);  
         #if CONFIG_PROCESS_MUTED_CHANNELS  
         const float effectiveVolume = CrossfadeVolume * Volume * (pEngineChannel->GetMute() ? 0 : pEngineChannel->GlobalVolume);  
         #else  
         const float effectiveVolume = CrossfadeVolume * Volume * pEngineChannel->GlobalVolume;  
         #endif  
         fFinalVolume = effectiveVolume;  
231      }      }
232    
233      void Voice::processCutoffEvent(RTList<Event>::Iterator& itEvent) {      Voice::EGInfo Voice::CalculateEG2ControllerInfluence(double eg2ControllerValue) {
234          int ccvalue = itEvent->Param.CC.Value;          EGInfo eg;
235          if (VCFCutoffCtrl.value == ccvalue) return;          eg.Attack  = (pRegion->EG2ControllerAttackInfluence)  ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerAttackInfluence)  * eg2ControllerValue : 1.0;
236          VCFCutoffCtrl.value == ccvalue;          eg.Decay   = (pRegion->EG2ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerDecayInfluence)   * eg2ControllerValue : 1.0;
237          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) * 0.00787402f; // (1 / 127)  
         if (cutoff > 1.0) cutoff = 1.0;  
         cutoff = (cutoff < 0.5 ? cutoff * 4826 - 1 : cutoff * 5715 - 449);  
         if (cutoff < 1.0) cutoff = 1.0;  
238    
239          VCFCutoffCtrl.fvalue = cutoff - 1.0; // needed for initialization of fFinalCutoff next time          return eg;
         fFinalCutoff = cutoff;  
240      }      }
241    
242      void Voice::processResonanceEvent(RTList<Event>::Iterator& itEvent) {      void Voice::InitLFO1() {
243          // convert absolute controller value to differential          uint16_t lfo1_internal_depth;
244          const int ctrldelta = itEvent->Param.CC.Value - VCFResonanceCtrl.value;          switch (pRegion->LFO1Controller) {
245          VCFResonanceCtrl.value = itEvent->Param.CC.Value;              case ::gig::lfo1_ctrl_internal:
246          const float resonancedelta = (float) ctrldelta * 0.00787f; // 0.0..1.0                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
247          fFinalResonance += resonancedelta;                  pLFO1->ExtController = 0; // no external controller
248          // needed for initialization of parameter                  bLFO1Enabled         = (lfo1_internal_depth > 0);
249          VCFResonanceCtrl.fvalue = itEvent->Param.CC.Value * 0.00787f;                  break;
250      }              case ::gig::lfo1_ctrl_modwheel:
251                    lfo1_internal_depth  = 0;
252      /**                  pLFO1->ExtController = 1; // MIDI controller 1
253       *  Synthesizes the current audio fragment for this voice.                  bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
254       *                  break;
255       *  @param Samples - number of sample points to be rendered in this audio              case ::gig::lfo1_ctrl_breath:
256       *                   fragment cycle                  lfo1_internal_depth  = 0;
257       *  @param pSrc    - pointer to input sample data                  pLFO1->ExtController = 2; // MIDI controller 2
258       *  @param Skip    - number of sample points to skip in output buffer                  bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
259       */                  break;
260      void Voice::Synthesize(uint Samples, sample_t* pSrc, uint Skip) {              case ::gig::lfo1_ctrl_internal_modwheel:
261          finalSynthesisParameters.pOutLeft  = &pEngineChannel->pOutputLeft[Skip];                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
262          finalSynthesisParameters.pOutRight = &pEngineChannel->pOutputRight[Skip];                  pLFO1->ExtController = 1; // MIDI controller 1
263          finalSynthesisParameters.pSrc      = pSrc;                  bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
264                    break;
265          RTList<Event>::Iterator itCCEvent = pEngineChannel->pEvents->first();              case ::gig::lfo1_ctrl_internal_breath:
266          RTList<Event>::Iterator itNoteEvent = pEngineChannel->pMIDIKeyInfo[MIDIKey].pEvents->first();                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
267                    pLFO1->ExtController = 2; // MIDI controller 2
268          if (Skip) { // skip events that happened before this voice was triggered                  bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
269              while (itCCEvent && itCCEvent->FragmentPos() <= Skip) ++itCCEvent;                  break;
270              while (itNoteEvent && itNoteEvent->FragmentPos() <= Skip) ++itNoteEvent;              default:
271          }                  lfo1_internal_depth  = 0;
272                    pLFO1->ExtController = 0; // no external controller
273          uint killPos;                  bLFO1Enabled         = false;
274          if (itKillEvent) killPos = RTMath::Min(itKillEvent->FragmentPos(), pEngine->MaxFadeOutPos);          }
275            if (bLFO1Enabled) {
276          uint i = Skip;              pLFO1->trigger(pRegion->LFO1Frequency,
277          while (i < Samples) {                             start_level_min,
278              int iSubFragmentEnd = RTMath::Min(i + CONFIG_DEFAULT_SUBFRAGMENT_SIZE, Samples);                             lfo1_internal_depth,
279                               pRegion->LFO1ControlDepth,
280              // initialize all final synthesis parameters                             pRegion->LFO1FlipPhase,
281              finalSynthesisParameters.fFinalPitch = PitchBase * PitchBend;                             pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
282              #if CONFIG_PROCESS_MUTED_CHANNELS              pLFO1->updateByMIDICtrlValue(pLFO1->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO1->ExtController] : 0);
283              fFinalVolume = this->Volume * this->CrossfadeVolume * (pEngineChannel->GetMute() ? 0 : pEngineChannel->GlobalVolume);              pLFO1->setScriptDepthFactor(
284              #else                  pNote->Override.AmpLFODepth.Value,
285              fFinalVolume = this->Volume * this->CrossfadeVolume * pEngineChannel->GlobalVolume;                  pNote->Override.AmpLFODepth.Final
286              #endif              );
287              fFinalCutoff    = VCFCutoffCtrl.fvalue;              if (pNote->Override.AmpLFOFreq.isFinal())
288              fFinalResonance = VCFResonanceCtrl.fvalue;                  pLFO1->setScriptFrequencyFinal(
289                        pNote->Override.AmpLFOFreq.Value, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE
290              // process MIDI control change and pitchbend events for this subfragment                  );
291              processCCEvents(itCCEvent, iSubFragmentEnd);              else
292                    pLFO1->setScriptFrequencyFactor(
293              // process transition events (note on, note off & sustain pedal)                      pNote->Override.AmpLFOFreq.Value, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE
294              processTransitionEvents(itNoteEvent, iSubFragmentEnd);                  );
295            }
296              // if the voice was killed in this subfragment switch EG1 to fade out stage      }
             if (itKillEvent && killPos <= iSubFragmentEnd) {  
                 EG1.enterFadeOutStage();  
                 itKillEvent = Pool<Event>::Iterator();  
             }  
297    
298              // process envelope generators      void Voice::InitLFO2() {
299              switch (EG1.getSegmentType()) {          uint16_t lfo2_internal_depth;
300                  case EGADSR::segment_lin:          switch (pRegion->LFO2Controller) {
301                      fFinalVolume *= EG1.processLin();              case ::gig::lfo2_ctrl_internal:
302                      break;                  lfo2_internal_depth  = pRegion->LFO2InternalDepth;
303                  case EGADSR::segment_exp:                  pLFO2->ExtController = 0; // no external controller
304                      fFinalVolume *= EG1.processExp();                  bLFO2Enabled         = (lfo2_internal_depth > 0);
305                      break;                  break;
306                  case EGADSR::segment_end:              case ::gig::lfo2_ctrl_modwheel:
307                      fFinalVolume *= EG1.getLevel();                  lfo2_internal_depth  = 0;
308                      break; // noop                  pLFO2->ExtController = 1; // MIDI controller 1
309              }                  bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
310              switch (EG2.getSegmentType()) {                  break;
311                  case EGADSR::segment_lin:              case ::gig::lfo2_ctrl_foot:
312                      fFinalCutoff *= EG2.processLin();                  lfo2_internal_depth  = 0;
313                      break;                  pLFO2->ExtController = 4; // MIDI controller 4
314                  case EGADSR::segment_exp:                  bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
315                      fFinalCutoff *= EG2.processExp();                  break;
316                      break;              case ::gig::lfo2_ctrl_internal_modwheel:
317                  case EGADSR::segment_end:                  lfo2_internal_depth  = pRegion->LFO2InternalDepth;
318                      fFinalCutoff *= EG2.getLevel();                  pLFO2->ExtController = 1; // MIDI controller 1
319                      break; // noop                  bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
320              }                  break;
321              if (EG3.active()) finalSynthesisParameters.fFinalPitch *= EG3.render();              case ::gig::lfo2_ctrl_internal_foot:
322                    lfo2_internal_depth  = pRegion->LFO2InternalDepth;
323                    pLFO2->ExtController = 4; // MIDI controller 4
324                    bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
325                    break;
326                default:
327                    lfo2_internal_depth  = 0;
328                    pLFO2->ExtController = 0; // no external controller
329                    bLFO2Enabled         = false;
330            }
331            if (bLFO2Enabled) {
332                pLFO2->trigger(pRegion->LFO2Frequency,
333                               start_level_max,
334                               lfo2_internal_depth,
335                               pRegion->LFO2ControlDepth,
336                               pRegion->LFO2FlipPhase,
337                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
338                pLFO2->updateByMIDICtrlValue(pLFO2->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO2->ExtController] : 0);
339                pLFO2->setScriptDepthFactor(
340                    pNote->Override.CutoffLFODepth.Value,
341                    pNote->Override.CutoffLFODepth.Final
342                );
343                if (pNote->Override.CutoffLFOFreq.isFinal())
344                    pLFO2->setScriptFrequencyFinal(pNote->Override.CutoffLFOFreq.Value, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
345                else
346                    pLFO2->setScriptFrequencyFactor(pNote->Override.CutoffLFOFreq.Value, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
347            }
348        }
349    
350              // process low frequency oscillators      void Voice::InitLFO3() {
351              if (bLFO1Enabled) fFinalVolume *= pLFO1->render();          uint16_t lfo3_internal_depth;
352              if (bLFO2Enabled) fFinalCutoff *= pLFO2->render();          switch (pRegion->LFO3Controller) {
353              if (bLFO3Enabled) finalSynthesisParameters.fFinalPitch *= RTMath::CentsToFreqRatio(pLFO3->render());              case ::gig::lfo3_ctrl_internal:
354                    lfo3_internal_depth  = pRegion->LFO3InternalDepth;
355              // if filter enabled then update filter coefficients                  pLFO3->ExtController = 0; // no external controller
356              if (SYNTHESIS_MODE_GET_FILTER(SynthesisMode)) {                  bLFO3Enabled         = (lfo3_internal_depth > 0);
357                  finalSynthesisParameters.filterLeft.SetParameters(fFinalCutoff + 1.0, fFinalResonance, pEngine->SampleRate);                  break;
358                  finalSynthesisParameters.filterRight.SetParameters(fFinalCutoff + 1.0, fFinalResonance, pEngine->SampleRate);              case ::gig::lfo3_ctrl_modwheel:
359              }                  lfo3_internal_depth  = 0;
360                    pLFO3->ExtController = 1; // MIDI controller 1
361                    bLFO3Enabled         = (pRegion->LFO3ControlDepth > 0);
362                    break;
363                case ::gig::lfo3_ctrl_aftertouch:
364                    lfo3_internal_depth  = 0;
365                    pLFO3->ExtController = CTRL_TABLE_IDX_AFTERTOUCH;
366                    bLFO3Enabled         = true;
367                    break;
368                case ::gig::lfo3_ctrl_internal_modwheel:
369                    lfo3_internal_depth  = pRegion->LFO3InternalDepth;
370                    pLFO3->ExtController = 1; // MIDI controller 1
371                    bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
372                    break;
373                case ::gig::lfo3_ctrl_internal_aftertouch:
374                    lfo3_internal_depth  = pRegion->LFO3InternalDepth;
375                    pLFO3->ExtController = CTRL_TABLE_IDX_AFTERTOUCH;
376                    bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
377                    break;
378                default:
379                    lfo3_internal_depth  = 0;
380                    pLFO3->ExtController = 0; // no external controller
381                    bLFO3Enabled         = false;
382            }
383            if (bLFO3Enabled) {
384                pLFO3->trigger(pRegion->LFO3Frequency,
385                               start_level_mid,
386                               lfo3_internal_depth,
387                               pRegion->LFO3ControlDepth,
388                               false,
389                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
390                pLFO3->updateByMIDICtrlValue(pLFO3->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO3->ExtController] : 0);
391                pLFO3->setScriptDepthFactor(
392                    pNote->Override.PitchLFODepth.Value,
393                    pNote->Override.PitchLFODepth.Final
394                );
395                if (pNote->Override.PitchLFOFreq.isFinal())
396                    pLFO3->setScriptFrequencyFinal(pNote->Override.PitchLFOFreq.Value, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
397                else
398                    pLFO3->setScriptFrequencyFactor(pNote->Override.PitchLFOFreq.Value, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
399            }
400        }
401    
402              // do we need resampling?      float Voice::CalculateCutoffBase(uint8_t MIDIKeyVelocity) {
403              const float __PLUS_ONE_CENT  = 1.000577789506554859250142541782224725466f;          float cutoff = pRegion->GetVelocityCutoff(MIDIKeyVelocity);
404              const float __MINUS_ONE_CENT = 0.9994225441413807496009516495583113737666f;          if (pRegion->VCFKeyboardTracking) {
405              const bool bResamplingRequired = !(finalSynthesisParameters.fFinalPitch <= __PLUS_ONE_CENT &&              cutoff *= RTMath::CentsToFreqRatioUnlimited((MIDIKey() - pRegion->VCFKeyboardTrackingBreakpoint) * 100);
406                                                 finalSynthesisParameters.fFinalPitch >= __MINUS_ONE_CENT);          }
407              SYNTHESIS_MODE_SET_INTERPOLATE(SynthesisMode, bResamplingRequired);          return cutoff;
408        }
409              // prepare final synthesis parameters structure  
410              finalSynthesisParameters.fFinalVolumeLeft  = fFinalVolume * PanLeft;      float Voice::CalculateFinalCutoff(float cutoffBase) {
411              finalSynthesisParameters.fFinalVolumeRight = fFinalVolume * PanRight;          int cvalue;
412              finalSynthesisParameters.uiToGo            = iSubFragmentEnd - i;          if (VCFCutoffCtrl.controller) {
413                cvalue = GetGigEngineChannel()->ControllerTable[VCFCutoffCtrl.controller];
414              // render audio for one subfragment              if (pRegion->VCFCutoffControllerInvert) cvalue = 127 - cvalue;
415              RunSynthesisFunction(SynthesisMode, &finalSynthesisParameters, &loop);              // VCFVelocityScale in this case means Minimum cutoff
416                if (cvalue < pRegion->VCFVelocityScale) cvalue = pRegion->VCFVelocityScale;
417              const double newPos = Pos + (iSubFragmentEnd - i) * finalSynthesisParameters.fFinalPitch;          }
418            else {
419              // increment envelopes' positions              cvalue = pRegion->VCFCutoff;
420              if (EG1.active()) {          }
421            float fco = cutoffBase * float(cvalue);
422                  // 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 (fco > 127.0f) fco = 127.0f;
                 if (pSample->Loops && Pos <= pSample->LoopStart && pSample->LoopStart < newPos) {  
                     EG1.update(EGADSR::event_hold_end, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
                 }  
423    
424                  EG1.increment(1);          return fco;
425                  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  
426    
427              Pos = newPos;      uint8_t Voice::GetVCFCutoffCtrl() {
428              i = iSubFragmentEnd;          uint8_t ctrl;
429            switch (pRegion->VCFCutoffController) {
430                case ::gig::vcf_cutoff_ctrl_modwheel:
431                    ctrl = 1;
432                    break;
433                case ::gig::vcf_cutoff_ctrl_effect1:
434                    ctrl = 12;
435                    break;
436                case ::gig::vcf_cutoff_ctrl_effect2:
437                    ctrl = 13;
438                    break;
439                case ::gig::vcf_cutoff_ctrl_breath:
440                    ctrl = 2;
441                    break;
442                case ::gig::vcf_cutoff_ctrl_foot:
443                    ctrl = 4;
444                    break;
445                case ::gig::vcf_cutoff_ctrl_sustainpedal:
446                    ctrl = 64;
447                    break;
448                case ::gig::vcf_cutoff_ctrl_softpedal:
449                    ctrl = 67;
450                    break;
451                case ::gig::vcf_cutoff_ctrl_genpurpose7:
452                    ctrl = 82;
453                    break;
454                case ::gig::vcf_cutoff_ctrl_genpurpose8:
455                    ctrl = 83;
456                    break;
457                case ::gig::vcf_cutoff_ctrl_aftertouch:
458                    ctrl = CTRL_TABLE_IDX_AFTERTOUCH;
459                    break;
460                case ::gig::vcf_cutoff_ctrl_none:
461                default:
462                    ctrl = 0;
463                    break;
464          }          }
465    
466            return ctrl;
467      }      }
468    
469      /** @brief Update current portamento position.      uint8_t Voice::GetVCFResonanceCtrl() {
470       *          uint8_t ctrl;
471       * Will be called when portamento mode is enabled to get the final          switch (pRegion->VCFResonanceController) {
472       * portamento position of this active voice from where the next voice(s)              case ::gig::vcf_res_ctrl_genpurpose3:
473       * might continue to slide on.                  ctrl = 18;
474       *                  break;
475       * @param itNoteOffEvent - event which causes this voice to die soon              case ::gig::vcf_res_ctrl_genpurpose4:
476       */                  ctrl = 19;
477      void Voice::UpdatePortamentoPos(Pool<Event>::Iterator& itNoteOffEvent) {                  break;
478          const float fFinalEG3Level = EG3.level(itNoteOffEvent->FragmentPos());              case ::gig::vcf_res_ctrl_genpurpose5:
479          pEngineChannel->PortamentoPos = (float) MIDIKey + RTMath::FreqRatioToCents(fFinalEG3Level) * 0.01f;                  ctrl = 80;
480      }                  break;
481                case ::gig::vcf_res_ctrl_genpurpose6:
482      /**                  ctrl = 81;
483       *  Immediately kill the voice. This method should not be used to kill                  break;
484       *  a normal, active voice, because it doesn't take care of things like              case ::gig::vcf_res_ctrl_none:
485       *  fading down the volume level to avoid clicks and regular processing              default:
486       *  until the kill event actually occured!                  ctrl = 0;
487       *          }
488       *  @see Kill()  
489       */          return ctrl;
490      void Voice::KillImmediately() {      }
         if (DiskVoice && DiskStreamRef.State != Stream::state_unused) {  
             pDiskThread->OrderDeletionOfStream(&DiskStreamRef);  
         }  
         Reset();  
     }  
   
     /**  
      *  Kill the voice in regular sense. Let the voice render audio until  
      *  the kill event actually occured and then fade down the volume level  
      *  very quickly and let the voice die finally. Unlike a normal release  
      *  of a voice, a kill process cannot be cancalled and is therefore  
      *  usually used for voice stealing and key group conflicts.  
      *  
      *  @param itKillEvent - event which caused the voice to be killed  
      */  
     void Voice::Kill(Pool<Event>::Iterator& itKillEvent) {  
         #if CONFIG_DEVMODE  
         if (!itKillEvent) dmsg(1,("gig::Voice::Kill(): ERROR, !itKillEvent !!!\n"));  
         if (itKillEvent && !itKillEvent.isValid()) dmsg(1,("gig::Voice::Kill(): ERROR, itKillEvent invalid !!!\n"));  
         #endif // CONFIG_DEVMODE  
491    
492          if (itTriggerEvent && itKillEvent->FragmentPos() <= itTriggerEvent->FragmentPos()) return;      void Voice::TriggerEG1(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
493          this->itKillEvent = itKillEvent;          EG1.setStateOptions(
494                pRegion->EG1Options.AttackCancel,
495                pRegion->EG1Options.AttackHoldCancel,
496                pRegion->EG1Options.Decay1Cancel,
497                pRegion->EG1Options.Decay2Cancel,
498                pRegion->EG1Options.ReleaseCancel
499            );
500            EG1.trigger(pRegion->EG1PreAttack,
501                        RTMath::Max(pRegion->EG1Attack, 0.0316) * egInfo.Attack,
502                        pRegion->EG1Hold,
503                        pRegion->EG1Decay1 * egInfo.Decay * velrelease,
504                        pRegion->EG1Decay2 * egInfo.Decay * velrelease,
505                        pRegion->EG1InfiniteSustain,
506                        (pNote && pNote->Override.Sustain.Final) ?
507                            pNote->Override.Sustain.Value :
508                            pRegion->EG1Sustain * (pNote ? pNote->Override.Sustain.Value : 1.f),
509                        RTMath::Max(pRegion->EG1Release * velrelease, 0.014) * egInfo.Release,
510                        velocityAttenuation,
511                        sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
512        }
513    
514        void Voice::TriggerEG2(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
515            EG2.setStateOptions(
516                pRegion->EG2Options.AttackCancel,
517                pRegion->EG2Options.AttackHoldCancel,
518                pRegion->EG2Options.Decay1Cancel,
519                pRegion->EG2Options.Decay2Cancel,
520                pRegion->EG2Options.ReleaseCancel
521            );
522            EG2.trigger(uint(RgnInfo.EG2PreAttack),
523                        RgnInfo.EG2Attack * egInfo.Attack,
524                        false,
525                        RgnInfo.EG2Decay1 * egInfo.Decay * velrelease,
526                        RgnInfo.EG2Decay2 * egInfo.Decay * velrelease,
527                        RgnInfo.EG2InfiniteSustain,
528                        uint(RgnInfo.EG2Sustain),
529                        RgnInfo.EG2Release * egInfo.Release * velrelease,
530                        velocityAttenuation,
531                        sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
532        }
533    
534        void Voice::ProcessGroupEvent(RTList<Event>::Iterator& itEvent) {
535            dmsg(4,("Voice %p processGroupEvents event type=%d", (void*)this, itEvent->Type));
536    
537            // TODO: The SustainPedal condition could be wrong, maybe the
538            // check should be if this Voice is in release stage or is a
539            // release sample instead. Need to test this in GSt.
540            // -- Andreas
541            //
542            // Commented sustain pedal check out. I don't think voices of the same
543            // note should be stopped at all, because it doesn't sound naturally
544            // with a drumkit.
545            // -- Christian, 2013-01-08
546            if (itEvent->Param.Note.Key != HostKey() /*||
547                !GetGigEngineChannel()->SustainPedal*/) {
548                dmsg(4,("Voice %p - kill", (void*)this));
549    
550                // kill the voice fast
551                pEG1->enterFadeOutStage();
552            }
553        }
554    
555        void Voice::CalculateFadeOutCoeff(float FadeOutTime, float SampleRate) {
556            EG1.CalculateFadeOutCoeff(FadeOutTime, SampleRate);
557        }
558    
559        int Voice::CalculatePan(uint8_t pan) {
560            int p;
561            // Gst behaviour: -64 and 63 are special cases
562            if (RgnInfo.Pan == -64)     p = pan * 2 - 127;
563            else if (RgnInfo.Pan == 63) p = pan * 2;
564            else                        p = pan + RgnInfo.Pan;
565    
566            if (p < 0) return 0;
567            if (p > 127) return 127;
568            return p;
569        }
570    
571        release_trigger_t Voice::GetReleaseTriggerFlags() {
572            release_trigger_t flags =
573                (pRegion->NoNoteOffReleaseTrigger) ?
574                    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
575            switch (pRegion->SustainReleaseTrigger) {
576                case ::gig::sust_rel_trg_none:
577                    break;
578                case ::gig::sust_rel_trg_maxvelocity:
579                    flags |= release_trigger_sustain_maxvelocity;
580                    break;
581                case ::gig::sust_rel_trg_keyvelocity:
582                    flags |= release_trigger_sustain_keyvelocity;
583                    break;
584            }
585            return flags;
586      }      }
587    
588  }} // namespace LinuxSampler::gig  }} // namespace LinuxSampler::gig
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