/[svn]/linuxsampler/trunk/src/engines/gig/Voice.cpp
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revision 781 by schoenebeck, Mon Sep 26 10:17:00 2005 UTC revision 3017 by schoenebeck, Wed Oct 19 12:28:40 2016 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 Christian Schoenebeck                              *   *   Copyright (C) 2005 - 2008 Christian Schoenebeck                       *
7     *   Copyright (C) 2009 - 2015 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    
     const float Voice::FILTER_CUTOFF_COEFF(CalculateFilterCutoffCoeff());  
   
     float Voice::CalculateFilterCutoffCoeff() {  
         return log(CONFIG_FILTER_CUTOFF_MAX / CONFIG_FILTER_CUTOFF_MIN);  
     }  
   
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 (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();  
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;  
   
         #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;  
         }  
62    
63          // select channel mode (mono or stereo)          si.HasLoops       = pRegion->SampleLoops;
64          SYNTHESIS_MODE_SET_CHANNELS(SynthesisMode, pSample->Channels == 2);          si.LoopStart      = (si.HasLoops) ? pRegion->pSampleLoops[0].LoopStart  : 0;
65            si.LoopLength     = (si.HasLoops) ? pRegion->pSampleLoops[0].LoopLength : 0;
66            si.LoopPlayCount  = pSample->LoopPlayCount;
67            si.Unpitched      = !pRegion->PitchTrack;
68    
69          // get starting crossfade volume level          return si;
70          switch (pDimRgn->AttenuationController.type) {      }
             case ::gig::attenuation_ctrl_t::type_channelaftertouch:  
                 CrossfadeVolume = 1.0f; //TODO: aftertouch not supported yet  
                 break;  
             case ::gig::attenuation_ctrl_t::type_velocity:  
                 CrossfadeVolume = 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;  
         }  
71    
72          PanLeft  = 1.0f - float(RTMath::Max(pDimRgn->Pan, 0)) /  63.0f;      Voice::RegionInfo Voice::GetRegionInfo() {
73          PanRight = 1.0f - float(RTMath::Min(pDimRgn->Pan, 0)) / -64.0f;          RegionInfo ri;
74            ri.UnityNote = pRegion->UnityNote;
75            ri.FineTune  = pRegion->FineTune;
76            ri.Pan       = pRegion->Pan;
77            ri.SampleStartOffset = pRegion->SampleStartOffset;
78    
79          finalSynthesisParameters.dPos = pDimRgn->SampleStartOffset; // offset where we should start playback of sample (0 - 2000 sample points)          ri.EG2PreAttack        = pRegion->EG2PreAttack;
80            ri.EG2Attack           = pRegion->EG2Attack;
81            ri.EG2Decay1           = pRegion->EG2Decay1;
82            ri.EG2Decay2           = pRegion->EG2Decay2;
83            ri.EG2Sustain          = pRegion->EG2Sustain;
84            ri.EG2InfiniteSustain  = pRegion->EG2InfiniteSustain;
85            ri.EG2Release          = pRegion->EG2Release;
86    
87          // Check if the sample needs disk streaming or is too short for that          ri.EG3Attack     = pRegion->EG3Attack;
88          long cachedsamples = pSample->GetCache().Size / pSample->FrameSize;          ri.EG3Depth      = pRegion->EG3Depth;
89          DiskVoice          = cachedsamples < pSample->SamplesTotal;          ri.VCFEnabled    = pRegion->VCFEnabled;
90            ri.VCFType       = Filter::vcf_type_t(pRegion->VCFType);
91            ri.VCFResonance  = pRegion->VCFResonance;
92    
93          if (DiskVoice) { // voice to be streamed from disk          ri.ReleaseTriggerDecay = 0.01053 * (256 >> pRegion->ReleaseTriggerDecay);
             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)  
94    
95              // check if there's a loop defined which completely fits into the cached (RAM) part of the sample          return ri;
96              if (pSample->Loops && pSample->LoopEnd <= MaxRAMPos) {      }
                 RAMLoop            = true;  
                 loop.uiTotalCycles = pSample->LoopPlayCount;  
                 loop.uiCyclesLeft  = pSample->LoopPlayCount;  
                 loop.uiStart       = pSample->LoopStart;  
                 loop.uiEnd         = pSample->LoopEnd;  
                 loop.uiSize        = pSample->LoopSize;  
             }  
             else RAMLoop = false;  
97    
98              if (pDiskThread->OrderNewStream(&DiskStreamRef, pSample, MaxRAMPos, !RAMLoop) < 0) {      Voice::InstrumentInfo Voice::GetInstrumentInfo() {
99                  dmsg(1,("Disk stream order failed!\n"));          InstrumentInfo ii;
100                  KillImmediately();          ii.FineTune = GetGigEngineChannel()->pInstrument->FineTune;
101                  return -1;          ii.PitchbendRange = GetGigEngineChannel()->pInstrument->PitchbendRange;
             }  
             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;  
             if (pSample->Loops) {  
                 RAMLoop           = true;  
                 loop.uiCyclesLeft = pSample->LoopPlayCount;  
             }  
             else RAMLoop = false;  
             dmsg(4,("RAM only voice launched (Looping: %s)\n", (RAMLoop) ? "yes" : "no"));  
         }  
102    
103            return ii;
104        }
105    
106          // calculate initial pitch value      double Voice::GetSampleAttenuation() {
107          {          return pRegion->SampleAttenuation;
108              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;  
109    
110              // calculate influence of EG1 controller on EG1's parameters      double Voice::GetVelocityAttenuation(uint8_t MIDIKeyVelocity) {
111              // (eg1attack is different from the others)          return pRegion->GetVelocityAttenuation(MIDIKeyVelocity);
112              double eg1attack  = (pDimRgn->EG1ControllerAttackInfluence)  ?      }
                 1 + 0.031 * (double) (pDimRgn->EG1ControllerAttackInfluence == 1 ?  
                                       1 : 1 << pDimRgn->EG1ControllerAttackInfluence) * eg1controllervalue : 1.0;  
             double eg1decay   = (pDimRgn->EG1ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pDimRgn->EG1ControllerDecayInfluence)   * eg1controllervalue : 1.0;  
             double eg1release = (pDimRgn->EG1ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pDimRgn->EG1ControllerReleaseInfluence) * eg1controllervalue : 1.0;  
   
             EG1.trigger(pDimRgn->EG1PreAttack,  
                         pDimRgn->EG1Attack * eg1attack,  
                         pDimRgn->EG1Hold,  
                         pSample->LoopStart,  
                         pDimRgn->EG1Decay1 * eg1decay * velrelease,  
                         pDimRgn->EG1Decay2 * eg1decay * velrelease,  
                         pDimRgn->EG1InfiniteSustain,  
                         pDimRgn->EG1Sustain,  
                         pDimRgn->EG1Release * eg1release * velrelease,  
                         velocityAttenuation,  
                         pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
         }  
113    
114        double Voice::GetVelocityRelease(uint8_t MIDIKeyVelocity) {
115            return pRegion->GetVelocityRelease(MIDIKeyVelocity);
116        }
117    
118          // setup EG 2 (VCF Cutoff EG)      void Voice::ProcessCCEvent(RTList<Event>::Iterator& itEvent) {
119          {          if (itEvent->Type == Event::type_control_change && itEvent->Param.CC.Controller) { // if (valid) MIDI control change event
120              // get current value of EG2 controller              if (pRegion->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&
121              double eg2controllervalue;                  itEvent->Param.CC.Controller == pRegion->AttenuationController.controller_number) {
122              switch (pDimRgn->EG2Controller.type) {                  CrossfadeSmoother.update(AbstractEngine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.CC.Value)]);
                 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;  
123              }              }
             if (pDimRgn->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue;  
   
             // calculate influence of EG2 controller on EG2's parameters  
             double eg2attack  = (pDimRgn->EG2ControllerAttackInfluence)  ? 1 + 0.00775 * (double) (1 << pDimRgn->EG2ControllerAttackInfluence)  * eg2controllervalue : 1.0;  
             double eg2decay   = (pDimRgn->EG2ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pDimRgn->EG2ControllerDecayInfluence)   * eg2controllervalue : 1.0;  
             double eg2release = (pDimRgn->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pDimRgn->EG2ControllerReleaseInfluence) * eg2controllervalue : 1.0;  
   
             EG2.trigger(pDimRgn->EG2PreAttack,  
                         pDimRgn->EG2Attack * eg2attack,  
                         false,  
                         pSample->LoopStart,  
                         pDimRgn->EG2Decay1 * eg2decay * velrelease,  
                         pDimRgn->EG2Decay2 * eg2decay * velrelease,  
                         pDimRgn->EG2InfiniteSustain,  
                         pDimRgn->EG2Sustain,  
                         pDimRgn->EG2Release * eg2release * velrelease,  
                         velocityAttenuation,  
                         pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
124          }          }
125        }
126    
127        void Voice::ProcessChannelPressureEvent(RTList<Event>::Iterator& itEvent) {
128          // setup EG 3 (VCO EG)          if (itEvent->Type == Event::type_channel_pressure) { // if (valid) MIDI channel pressure (aftertouch) event
129          {              if (pRegion->AttenuationController.type == ::gig::attenuation_ctrl_t::type_channelaftertouch) {
130            double eg3depth = RTMath::CentsToFreqRatio(pDimRgn->EG3Depth);                  CrossfadeSmoother.update(AbstractEngine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.ChannelPressure.Value)]);
131            EG3.trigger(eg3depth, pDimRgn->EG3Attack, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);              }
132          }          }
133        }
134    
135        void Voice::ProcessPolyphonicKeyPressureEvent(RTList<Event>::Iterator& itEvent) {
136            // Not used so far
137        }
138    
139          // setup LFO 1 (VCA LFO)      void Voice::ProcessCutoffEvent(RTList<Event>::Iterator& itEvent) {
140          {          int ccvalue = itEvent->Param.CC.Value;
141              uint16_t lfo1_internal_depth;          if (VCFCutoffCtrl.value == ccvalue) return;
142              switch (pDimRgn->LFO1Controller) {          VCFCutoffCtrl.value = ccvalue;
143                  case ::gig::lfo1_ctrl_internal:          if (pRegion->VCFCutoffControllerInvert)  ccvalue = 127 - ccvalue;
144                      lfo1_internal_depth  = pDimRgn->LFO1InternalDepth;          if (ccvalue < pRegion->VCFVelocityScale) ccvalue = pRegion->VCFVelocityScale;
145                      pLFO1->ExtController = 0; // no external controller          float cutoff = CutoffBase * float(ccvalue);
146                      bLFO1Enabled         = (lfo1_internal_depth > 0);          if (cutoff > 127.0f) cutoff = 127.0f;
                     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);  
         }  
147    
148            VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of fFinalCutoff next time
149            fFinalCutoff = cutoff;
150        }
151    
152          // setup LFO 2 (VCF Cutoff LFO)      double Voice::CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity) {
153          {          float crossfadeVolume;
154              uint16_t lfo2_internal_depth;          switch (pRegion->AttenuationController.type) {
155              switch (pDimRgn->LFO2Controller) {              case ::gig::attenuation_ctrl_t::type_channelaftertouch:
156                  case ::gig::lfo2_ctrl_internal:                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[128])];
157                      lfo2_internal_depth  = pDimRgn->LFO2InternalDepth;                  break;
158                      pLFO2->ExtController = 0; // no external controller              case ::gig::attenuation_ctrl_t::type_velocity:
159                      bLFO2Enabled         = (lfo2_internal_depth > 0);                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(MIDIKeyVelocity)];
160                      break;                  break;
161                  case ::gig::lfo2_ctrl_modwheel:              case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate
162                      lfo2_internal_depth  = 0;                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[pRegion->AttenuationController.controller_number])];
163                      pLFO2->ExtController = 1; // MIDI controller 1                  break;
164                      bLFO2Enabled         = (pDimRgn->LFO2ControlDepth > 0);              case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined
165                      break;              default:
166                  case ::gig::lfo2_ctrl_foot:                  crossfadeVolume = 1.0f;
                     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);  
167          }          }
168    
169            return crossfadeVolume;
170        }
171    
172          // setup LFO 3 (VCO LFO)      double Voice::GetEG1ControllerValue(uint8_t MIDIKeyVelocity) {
173          {          double eg1controllervalue = 0;
174              uint16_t lfo3_internal_depth;          switch (pRegion->EG1Controller.type) {
175              switch (pDimRgn->LFO3Controller) {              case ::gig::eg1_ctrl_t::type_none: // no controller defined
176                  case ::gig::lfo3_ctrl_internal:                  eg1controllervalue = 0;
177                      lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;                  break;
178                      pLFO3->ExtController = 0; // no external controller              case ::gig::eg1_ctrl_t::type_channelaftertouch:
179                      bLFO3Enabled         = (lfo3_internal_depth > 0);                  eg1controllervalue = GetGigEngineChannel()->ControllerTable[128];
180                      break;                  break;
181                  case ::gig::lfo3_ctrl_modwheel:              case ::gig::eg1_ctrl_t::type_velocity:
182                      lfo3_internal_depth  = 0;                  eg1controllervalue = MIDIKeyVelocity;
183                      pLFO3->ExtController = 1; // MIDI controller 1                  break;
184                      bLFO3Enabled         = (pDimRgn->LFO3ControlDepth > 0);              case ::gig::eg1_ctrl_t::type_controlchange: // MIDI control change controller
185                      break;                  eg1controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG1Controller.controller_number];
186                  case ::gig::lfo3_ctrl_aftertouch:                  break;
                     lfo3_internal_depth  = 0;  
                     pLFO3->ExtController = 0; // TODO: aftertouch not implemented yet  
                     bLFO3Enabled         = false; // see TODO comment in line above  
                     break;  
                 case ::gig::lfo3_ctrl_internal_modwheel:  
                     lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;  
                     pLFO3->ExtController = 1; // MIDI controller 1  
                     bLFO3Enabled         = (lfo3_internal_depth > 0 || pDimRgn->LFO3ControlDepth > 0);  
                     break;  
                 case ::gig::lfo3_ctrl_internal_aftertouch:  
                     lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;  
                     pLFO1->ExtController = 0; // TODO: aftertouch not implemented yet  
                     bLFO3Enabled         = (lfo3_internal_depth > 0 /*|| pDimRgn->LFO3ControlDepth > 0*/); // see TODO comment in line above  
                     break;  
                 default:  
                     lfo3_internal_depth  = 0;  
                     pLFO3->ExtController = 0; // no external controller  
                     bLFO3Enabled         = false;  
             }  
             if (bLFO3Enabled) pLFO3->trigger(pDimRgn->LFO3Frequency,  
                                              start_level_mid,  
                                              lfo3_internal_depth,  
                                              pDimRgn->LFO3ControlDepth,  
                                              false,  
                                              pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
187          }          }
188            if (pRegion->EG1ControllerInvert) eg1controllervalue = 127 - eg1controllervalue;
189    
190            return eg1controllervalue;
191        }
192    
193          #if CONFIG_FORCE_FILTER      Voice::EGInfo Voice::CalculateEG1ControllerInfluence(double eg1ControllerValue) {
194          const bool bUseFilter = true;          EGInfo eg;
195          #else // use filter only if instrument file told so          // (eg1attack is different from the others)
196          const bool bUseFilter = pDimRgn->VCFEnabled;          if (pRegion->EG1Attack < 1e-8 && // attack in gig == 0
197          #endif // CONFIG_FORCE_FILTER              (pRegion->EG1ControllerAttackInfluence == 0 ||
198          SYNTHESIS_MODE_SET_FILTER(SynthesisMode, bUseFilter);               eg1ControllerValue <= 10)) { // strange GSt special case
199          if (bUseFilter) {              eg.Attack = 0; // this will force the attack to be 0 in the call to EG1.trigger
200              #ifdef CONFIG_OVERRIDE_CUTOFF_CTRL          } else {
201              VCFCutoffCtrl.controller = CONFIG_OVERRIDE_CUTOFF_CTRL;              eg.Attack  = (pRegion->EG1ControllerAttackInfluence)  ?
202              #else // use the one defined in the instrument file                  1 + 0.031 * (double) (pRegion->EG1ControllerAttackInfluence == 1 ?
203              switch (pDimRgn->VCFCutoffController) {                                        1 : 1 << pRegion->EG1ControllerAttackInfluence) * eg1ControllerValue : 1.0;
204                  case ::gig::vcf_cutoff_ctrl_modwheel:          }
205                      VCFCutoffCtrl.controller = 1;          eg.Decay   = (pRegion->EG1ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerDecayInfluence)   * eg1ControllerValue : 1.0;
206                      break;          eg.Release = (pRegion->EG1ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerReleaseInfluence) * eg1ControllerValue : 1.0;
207                  case ::gig::vcf_cutoff_ctrl_effect1:  
208                      VCFCutoffCtrl.controller = 12;          return eg;
209                      break;      }
210                  case ::gig::vcf_cutoff_ctrl_effect2:  
211                      VCFCutoffCtrl.controller = 13;      double Voice::GetEG2ControllerValue(uint8_t MIDIKeyVelocity) {
212                      break;          double eg2controllervalue = 0;
213                  case ::gig::vcf_cutoff_ctrl_breath:          switch (pRegion->EG2Controller.type) {
214                      VCFCutoffCtrl.controller = 2;              case ::gig::eg2_ctrl_t::type_none: // no controller defined
215                      break;                  eg2controllervalue = 0;
216                  case ::gig::vcf_cutoff_ctrl_foot:                  break;
217                      VCFCutoffCtrl.controller = 4;              case ::gig::eg2_ctrl_t::type_channelaftertouch:
218                      break;                  eg2controllervalue = GetGigEngineChannel()->ControllerTable[128];
219                  case ::gig::vcf_cutoff_ctrl_sustainpedal:                  break;
220                      VCFCutoffCtrl.controller = 64;              case ::gig::eg2_ctrl_t::type_velocity:
221                      break;                  eg2controllervalue = MIDIKeyVelocity;
222                  case ::gig::vcf_cutoff_ctrl_softpedal:                  break;
223                      VCFCutoffCtrl.controller = 67;              case ::gig::eg2_ctrl_t::type_controlchange: // MIDI control change controller
224                      break;                  eg2controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG2Controller.controller_number];
225                  case ::gig::vcf_cutoff_ctrl_genpurpose7:                  break;
226                      VCFCutoffCtrl.controller = 82;          }
227                      break;          if (pRegion->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue;
                 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  
228    
229              #ifdef CONFIG_OVERRIDE_RESONANCE_CTRL          return eg2controllervalue;
230              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  
231    
232              #ifndef CONFIG_OVERRIDE_FILTER_TYPE      Voice::EGInfo Voice::CalculateEG2ControllerInfluence(double eg2ControllerValue) {
233              finalSynthesisParameters.filterLeft.SetType(pDimRgn->VCFType);          EGInfo eg;
234              finalSynthesisParameters.filterRight.SetType(pDimRgn->VCFType);          eg.Attack  = (pRegion->EG2ControllerAttackInfluence)  ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerAttackInfluence)  * eg2ControllerValue : 1.0;
235              #else // override filter type          eg.Decay   = (pRegion->EG2ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerDecayInfluence)   * eg2ControllerValue : 1.0;
236              FilterLeft.SetType(CONFIG_OVERRIDE_FILTER_TYPE);          eg.Release = (pRegion->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerReleaseInfluence) * eg2ControllerValue : 1.0;
             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;  
237    
238              int cvalue;          return eg;
239              if (VCFCutoffCtrl.controller) {      }
                 cvalue = pEngineChannel->ControllerTable[VCFCutoffCtrl.controller];  
                 if (pDimRgn->VCFCutoffControllerInvert) cvalue = 127 - cvalue;  
                 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 = exp(cutoff * FILTER_CUTOFF_COEFF) * CONFIG_FILTER_CUTOFF_MIN;  
   
             // calculate resonance  
             float resonance = (float) VCFResonanceCtrl.value * 0.00787f;   // 0.0..1.0  
             if (pDimRgn->VCFKeyboardTracking) {  
                 resonance += (float) (itNoteOnEvent->Param.Note.Key - pDimRgn->VCFKeyboardTrackingBreakpoint) * 0.00787f;  
             }  
             Constrain(resonance, 0.0, 1.0); // correct resonance if outside allowed value range (0.0..1.0)  
240    
241              VCFCutoffCtrl.fvalue    = cutoff - CONFIG_FILTER_CUTOFF_MIN;      void Voice::InitLFO1() {
242              VCFResonanceCtrl.fvalue = resonance;          uint16_t lfo1_internal_depth;
243          }          switch (pRegion->LFO1Controller) {
244          else {              case ::gig::lfo1_ctrl_internal:
245              VCFCutoffCtrl.controller    = 0;                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
246              VCFResonanceCtrl.controller = 0;                  pLFO1->ExtController = 0; // no external controller
247                    bLFO1Enabled         = (lfo1_internal_depth > 0);
248                    break;
249                case ::gig::lfo1_ctrl_modwheel:
250                    lfo1_internal_depth  = 0;
251                    pLFO1->ExtController = 1; // MIDI controller 1
252                    bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
253                    break;
254                case ::gig::lfo1_ctrl_breath:
255                    lfo1_internal_depth  = 0;
256                    pLFO1->ExtController = 2; // MIDI controller 2
257                    bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
258                    break;
259                case ::gig::lfo1_ctrl_internal_modwheel:
260                    lfo1_internal_depth  = pRegion->LFO1InternalDepth;
261                    pLFO1->ExtController = 1; // MIDI controller 1
262                    bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
263                    break;
264                case ::gig::lfo1_ctrl_internal_breath:
265                    lfo1_internal_depth  = pRegion->LFO1InternalDepth;
266                    pLFO1->ExtController = 2; // MIDI controller 2
267                    bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
268                    break;
269                default:
270                    lfo1_internal_depth  = 0;
271                    pLFO1->ExtController = 0; // no external controller
272                    bLFO1Enabled         = false;
273            }
274            if (bLFO1Enabled) {
275                pLFO1->trigger(pRegion->LFO1Frequency,
276                               start_level_min,
277                               lfo1_internal_depth,
278                               pRegion->LFO1ControlDepth,
279                               pRegion->LFO1FlipPhase,
280                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
281                pLFO1->update(pLFO1->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO1->ExtController] : 0);
282          }          }
   
         return 0; // success  
283      }      }
284    
285      /**      void Voice::InitLFO2() {
286       *  Renders the audio data for this voice for the current audio fragment.          uint16_t lfo2_internal_depth;
287       *  The sample input data can either come from RAM (cached sample or sample          switch (pRegion->LFO2Controller) {
288       *  part) or directly from disk. The output signal will be rendered by              case ::gig::lfo2_ctrl_internal:
289       *  resampling / interpolation. If this voice is a disk streaming voice and                  lfo2_internal_depth  = pRegion->LFO2InternalDepth;
290       *  the voice completely played back the cached RAM part of the sample, it                  pLFO2->ExtController = 0; // no external controller
291       *  will automatically switch to disk playback for the next RenderAudio()                  bLFO2Enabled         = (lfo2_internal_depth > 0);
292       *  call.                  break;
293       *              case ::gig::lfo2_ctrl_modwheel:
294       *  @param Samples - number of samples to be rendered in this audio fragment cycle                  lfo2_internal_depth  = 0;
295       */                  pLFO2->ExtController = 1; // MIDI controller 1
296      void Voice::Render(uint Samples) {                  bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
297                    break;
298          // select default values for synthesis mode bits              case ::gig::lfo2_ctrl_foot:
299          SYNTHESIS_MODE_SET_LOOP(SynthesisMode, false);                  lfo2_internal_depth  = 0;
300                    pLFO2->ExtController = 4; // MIDI controller 4
301          switch (this->PlaybackState) {                  bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
302                    break;
303              case playback_state_init:              case ::gig::lfo2_ctrl_internal_modwheel:
304                  this->PlaybackState = playback_state_ram; // we always start playback from RAM cache and switch then to disk if needed                  lfo2_internal_depth  = pRegion->LFO2InternalDepth;
305                  // no break - continue with playback_state_ram                  pLFO2->ExtController = 1; // MIDI controller 1
306                    bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
307              case playback_state_ram: {                  break;
308                      if (RAMLoop) SYNTHESIS_MODE_SET_LOOP(SynthesisMode, true); // enable looping              case ::gig::lfo2_ctrl_internal_foot:
309                    lfo2_internal_depth  = pRegion->LFO2InternalDepth;
310                      // render current fragment                  pLFO2->ExtController = 4; // MIDI controller 4
311                      Synthesize(Samples, (sample_t*) pSample->GetCache().pStart, Delay);                  bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
312                    break;
313                      if (DiskVoice) {              default:
314                          // check if we reached the allowed limit of the sample RAM cache                  lfo2_internal_depth  = 0;
315                          if (finalSynthesisParameters.dPos > MaxRAMPos) {                  pLFO2->ExtController = 0; // no external controller
316                              dmsg(5,("Voice: switching to disk playback (Pos=%f)\n", finalSynthesisParameters.dPos));                  bLFO2Enabled         = false;
317                              this->PlaybackState = playback_state_disk;          }
318                          }          if (bLFO2Enabled) {
319                      } else if (finalSynthesisParameters.dPos >= pSample->GetCache().Size / pSample->FrameSize) {              pLFO2->trigger(pRegion->LFO2Frequency,
320                          this->PlaybackState = playback_state_end;                             start_level_max,
321                      }                             lfo2_internal_depth,
322                  }                             pRegion->LFO2ControlDepth,
323                  break;                             pRegion->LFO2FlipPhase,
324                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
325              case playback_state_disk: {              pLFO2->update(pLFO2->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO2->ExtController] : 0);
                     if (!DiskStreamRef.pStream) {  
                         // check if the disk thread created our ordered disk stream in the meantime  
                         DiskStreamRef.pStream = pDiskThread->AskForCreatedStream(DiskStreamRef.OrderID);  
                         if (!DiskStreamRef.pStream) {  
                             std::cout << stderr << "Disk stream not available in time!" << std::endl << std::flush;  
                             KillImmediately();  
                             return;  
                         }  
                         DiskStreamRef.pStream->IncrementReadPos(pSample->Channels * (int(finalSynthesisParameters.dPos) - MaxRAMPos));  
                         finalSynthesisParameters.dPos -= int(finalSynthesisParameters.dPos);  
                         RealSampleWordsLeftToRead = -1; // -1 means no silence has been added yet  
                     }  
   
                     const int sampleWordsLeftToRead = DiskStreamRef.pStream->GetReadSpace();  
   
                     // add silence sample at the end if we reached the end of the stream (for the interpolator)  
                     if (DiskStreamRef.State == Stream::state_end) {  
                         const int maxSampleWordsPerCycle = (pEngine->MaxSamplesPerCycle << CONFIG_MAX_PITCH) * pSample->Channels + 6; // +6 for the interpolator algorithm  
                         if (sampleWordsLeftToRead <= maxSampleWordsPerCycle) {  
                             // remember how many sample words there are before any silence has been added  
                             if (RealSampleWordsLeftToRead < 0) RealSampleWordsLeftToRead = sampleWordsLeftToRead;  
                             DiskStreamRef.pStream->WriteSilence(maxSampleWordsPerCycle - sampleWordsLeftToRead);  
                         }  
                     }  
   
                     sample_t* ptr = 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, finalSynthesisParameters.dPos, finalSynthesisParameters.fFinalPitch, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
                 EG2.update(EGADSR::event_release, finalSynthesisParameters.dPos, finalSynthesisParameters.fFinalPitch, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
             } else if (itEvent->Type == Event::type_cancel_release) {  
                 EG1.update(EGADSR::event_cancel_release, finalSynthesisParameters.dPos, finalSynthesisParameters.fFinalPitch, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
                 EG2.update(EGADSR::event_cancel_release, finalSynthesisParameters.dPos, finalSynthesisParameters.fFinalPitch, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
             }  
326          }          }
327      }      }
328    
329      /**      void Voice::InitLFO3() {
330       * Process given list of MIDI control change and pitch bend events for          uint16_t lfo3_internal_depth;
331       * the given time.          switch (pRegion->LFO3Controller) {
332       *              case ::gig::lfo3_ctrl_internal:
333       * @param itEvent - iterator pointing to the next event to be processed                  lfo3_internal_depth  = pRegion->LFO3InternalDepth;
334       * @param End     - youngest time stamp where processing should be stopped                  pLFO3->ExtController = 0; // no external controller
335       */                  bLFO3Enabled         = (lfo3_internal_depth > 0);
336      void Voice::processCCEvents(RTList<Event>::Iterator& itEvent, uint End) {                  break;
337          for (; itEvent && itEvent->FragmentPos() <= End; ++itEvent) {              case ::gig::lfo3_ctrl_modwheel:
338              if (itEvent->Type == Event::type_control_change &&                  lfo3_internal_depth  = 0;
339                  itEvent->Param.CC.Controller) { // if (valid) MIDI control change event                  pLFO3->ExtController = 1; // MIDI controller 1
340                  if (itEvent->Param.CC.Controller == VCFCutoffCtrl.controller) {                  bLFO3Enabled         = (pRegion->LFO3ControlDepth > 0);
341                      processCutoffEvent(itEvent);                  break;
342                  }              case ::gig::lfo3_ctrl_aftertouch:
343                  if (itEvent->Param.CC.Controller == VCFResonanceCtrl.controller) {                  lfo3_internal_depth  = 0;
344                      processResonanceEvent(itEvent);                  pLFO3->ExtController = CTRL_TABLE_IDX_AFTERTOUCH;
345                  }                  bLFO3Enabled         = true;
346                  if (itEvent->Param.CC.Controller == pLFO1->ExtController) {                  break;
347                      pLFO1->update(itEvent->Param.CC.Value);              case ::gig::lfo3_ctrl_internal_modwheel:
348                  }                  lfo3_internal_depth  = pRegion->LFO3InternalDepth;
349                  if (itEvent->Param.CC.Controller == pLFO2->ExtController) {                  pLFO3->ExtController = 1; // MIDI controller 1
350                      pLFO2->update(itEvent->Param.CC.Value);                  bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
351                  }                  break;
352                  if (itEvent->Param.CC.Controller == pLFO3->ExtController) {              case ::gig::lfo3_ctrl_internal_aftertouch:
353                      pLFO3->update(itEvent->Param.CC.Value);                  lfo3_internal_depth  = pRegion->LFO3InternalDepth;
354                  }                  pLFO3->ExtController = CTRL_TABLE_IDX_AFTERTOUCH;
355                  if (pDimRgn->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&                  bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
356                      itEvent->Param.CC.Controller == pDimRgn->AttenuationController.controller_number) {                  break;
357                      processCrossFadeEvent(itEvent);              default:
358                  }                  lfo3_internal_depth  = 0;
359              } else if (itEvent->Type == Event::type_pitchbend) { // if pitch bend event                  pLFO3->ExtController = 0; // no external controller
360                  processPitchEvent(itEvent);                  bLFO3Enabled         = false;
361              }          }
362            if (bLFO3Enabled) {
363                pLFO3->trigger(pRegion->LFO3Frequency,
364                               start_level_mid,
365                               lfo3_internal_depth,
366                               pRegion->LFO3ControlDepth,
367                               false,
368                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
369                pLFO3->update(pLFO3->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO3->ExtController] : 0);
370          }          }
371      }      }
372    
373      void Voice::processPitchEvent(RTList<Event>::Iterator& itEvent) {      float Voice::CalculateCutoffBase(uint8_t MIDIKeyVelocity) {
374          const float pitch = RTMath::CentsToFreqRatio(((double) itEvent->Param.Pitch.Pitch / 8192.0) * 200.0); // +-two semitones = +-200 cents          float cutoff = pRegion->GetVelocityCutoff(MIDIKeyVelocity);
375          finalSynthesisParameters.fFinalPitch *= pitch;          if (pRegion->VCFKeyboardTracking) {
376          PitchBend = pitch;              cutoff *= RTMath::CentsToFreqRatioUnlimited((MIDIKey() - pRegion->VCFKeyboardTrackingBreakpoint) * 100);
377      }          }
378            return cutoff;
379      void Voice::processCrossFadeEvent(RTList<Event>::Iterator& itEvent) {      }
380          CrossfadeVolume = CrossfadeAttenuation(itEvent->Param.CC.Value);  
381          #if CONFIG_PROCESS_MUTED_CHANNELS      float Voice::CalculateFinalCutoff(float cutoffBase) {
382          const float effectiveVolume = CrossfadeVolume * Volume * (pEngineChannel->GetMute() ? 0 : pEngineChannel->GlobalVolume);          int cvalue;
383          #else          if (VCFCutoffCtrl.controller) {
384          const float effectiveVolume = CrossfadeVolume * Volume * pEngineChannel->GlobalVolume;              cvalue = GetGigEngineChannel()->ControllerTable[VCFCutoffCtrl.controller];
385          #endif              if (pRegion->VCFCutoffControllerInvert) cvalue = 127 - cvalue;
386          fFinalVolume = effectiveVolume;              // VCFVelocityScale in this case means Minimum cutoff
387      }              if (cvalue < pRegion->VCFVelocityScale) cvalue = pRegion->VCFVelocityScale;
388            }
389            else {
390                cvalue = pRegion->VCFCutoff;
391            }
392            float fco = cutoffBase * float(cvalue);
393            if (fco > 127.0f) fco = 127.0f;
394    
395      void Voice::processCutoffEvent(RTList<Event>::Iterator& itEvent) {          return fco;
         int ccvalue = itEvent->Param.CC.Value;  
         if (VCFCutoffCtrl.value == ccvalue) return;  
         VCFCutoffCtrl.value == ccvalue;  
         if (pDimRgn->VCFCutoffControllerInvert)  ccvalue = 127 - ccvalue;  
         if (ccvalue < pDimRgn->VCFVelocityScale) ccvalue = pDimRgn->VCFVelocityScale;  
         float cutoff = CutoffBase * float(ccvalue) * 0.00787402f; // (1 / 127)  
         if (cutoff > 1.0) cutoff = 1.0;  
         cutoff = exp(cutoff * FILTER_CUTOFF_COEFF) * CONFIG_FILTER_CUTOFF_MIN - CONFIG_FILTER_CUTOFF_MIN;  
         VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of fFinalCutoff next time  
         fFinalCutoff = cutoff;  
396      }      }
397    
398      void Voice::processResonanceEvent(RTList<Event>::Iterator& itEvent) {      uint8_t Voice::GetVCFCutoffCtrl() {
399          // convert absolute controller value to differential          uint8_t ctrl;
400          const int ctrldelta = itEvent->Param.CC.Value - VCFResonanceCtrl.value;          switch (pRegion->VCFCutoffController) {
401          VCFResonanceCtrl.value = itEvent->Param.CC.Value;              case ::gig::vcf_cutoff_ctrl_modwheel:
402          const float resonancedelta = (float) ctrldelta * 0.00787f; // 0.0..1.0                  ctrl = 1;
403          fFinalResonance += resonancedelta;                  break;
404          // needed for initialization of parameter              case ::gig::vcf_cutoff_ctrl_effect1:
405          VCFResonanceCtrl.fvalue = itEvent->Param.CC.Value * 0.00787f;                  ctrl = 12;
406      }                  break;
407                case ::gig::vcf_cutoff_ctrl_effect2:
408      /**                  ctrl = 13;
409       *  Synthesizes the current audio fragment for this voice.                  break;
410       *              case ::gig::vcf_cutoff_ctrl_breath:
411       *  @param Samples - number of sample points to be rendered in this audio                  ctrl = 2;
412       *                   fragment cycle                  break;
413       *  @param pSrc    - pointer to input sample data              case ::gig::vcf_cutoff_ctrl_foot:
414       *  @param Skip    - number of sample points to skip in output buffer                  ctrl = 4;
415       */                  break;
416      void Voice::Synthesize(uint Samples, sample_t* pSrc, uint Skip) {              case ::gig::vcf_cutoff_ctrl_sustainpedal:
417          finalSynthesisParameters.pOutLeft  = &pEngineChannel->pOutputLeft[Skip];                  ctrl = 64;
418          finalSynthesisParameters.pOutRight = &pEngineChannel->pOutputRight[Skip];                  break;
419          finalSynthesisParameters.pSrc      = pSrc;              case ::gig::vcf_cutoff_ctrl_softpedal:
420                    ctrl = 67;
421          RTList<Event>::Iterator itCCEvent = pEngineChannel->pEvents->first();                  break;
422          RTList<Event>::Iterator itNoteEvent = pEngineChannel->pMIDIKeyInfo[MIDIKey].pEvents->first();              case ::gig::vcf_cutoff_ctrl_genpurpose7:
423                    ctrl = 82;
424          if (Skip) { // skip events that happened before this voice was triggered                  break;
425              while (itCCEvent && itCCEvent->FragmentPos() <= Skip) ++itCCEvent;              case ::gig::vcf_cutoff_ctrl_genpurpose8:
426              while (itNoteEvent && itNoteEvent->FragmentPos() <= Skip) ++itNoteEvent;                  ctrl = 83;
427          }                  break;
428                case ::gig::vcf_cutoff_ctrl_aftertouch:
429          uint i = Skip;                  ctrl = CTRL_TABLE_IDX_AFTERTOUCH;
430          while (i < Samples) {                  break;
431              int iSubFragmentEnd = RTMath::Min(i + CONFIG_DEFAULT_SUBFRAGMENT_SIZE, Samples);              case ::gig::vcf_cutoff_ctrl_none:
432                default:
433              // initialize all final synthesis parameters                  ctrl = 0;
434              finalSynthesisParameters.fFinalPitch = PitchBase * PitchBend;                  break;
435              #if CONFIG_PROCESS_MUTED_CHANNELS          }
             fFinalVolume = this->Volume * this->CrossfadeVolume * (pEngineChannel->GetMute() ? 0 : pEngineChannel->GlobalVolume);  
             #else  
             fFinalVolume = this->Volume * this->CrossfadeVolume * pEngineChannel->GlobalVolume;  
             #endif  
             fFinalCutoff    = VCFCutoffCtrl.fvalue;  
             fFinalResonance = VCFResonanceCtrl.fvalue;  
   
             // process MIDI control change and pitchbend events for this subfragment  
             processCCEvents(itCCEvent, iSubFragmentEnd);  
   
             // process transition events (note on, note off & sustain pedal)  
             processTransitionEvents(itNoteEvent, iSubFragmentEnd);  
   
             // process envelope generators  
             switch (EG1.getSegmentType()) {  
                 case EGADSR::segment_lin:  
                     fFinalVolume *= EG1.processLin();  
                     break;  
                 case EGADSR::segment_exp:  
                     fFinalVolume *= EG1.processExp();  
                     break;  
                 case EGADSR::segment_end:  
                     fFinalVolume *= EG1.getLevel();  
                     break; // noop  
             }  
             switch (EG2.getSegmentType()) {  
                 case EGADSR::segment_lin:  
                     fFinalCutoff *= EG2.processLin();  
                     break;  
                 case EGADSR::segment_exp:  
                     fFinalCutoff *= EG2.processExp();  
                     break;  
                 case EGADSR::segment_end:  
                     fFinalCutoff *= EG2.getLevel();  
                     break; // noop  
             }  
             if (EG3.active()) finalSynthesisParameters.fFinalPitch *= RTMath::CentsToFreqRatio(EG3.render());  
   
             // process low frequency oscillators  
             if (bLFO1Enabled) fFinalVolume *= 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);  
             }  
436    
437              // do we need resampling?          return ctrl;
438              const float __PLUS_ONE_CENT  = 1.000577789506554859250142541782224725466f;      }
             const float __MINUS_ONE_CENT = 0.9994225441413807496009516495583113737666f;  
             const bool bResamplingRequired = !(finalSynthesisParameters.fFinalPitch <= __PLUS_ONE_CENT &&  
                                                finalSynthesisParameters.fFinalPitch >= __MINUS_ONE_CENT);  
             SYNTHESIS_MODE_SET_INTERPOLATE(SynthesisMode, bResamplingRequired);  
   
             // prepare final synthesis parameters structure  
             finalSynthesisParameters.fFinalVolumeLeft  = fFinalVolume * PanLeft;  
             finalSynthesisParameters.fFinalVolumeRight = fFinalVolume * PanRight;  
             finalSynthesisParameters.uiToGo            = iSubFragmentEnd - i;  
   
             // render audio for one subfragment  
             RunSynthesisFunction(SynthesisMode, &finalSynthesisParameters, &loop);  
   
             // increment envelopes' positions  
             if (EG1.active()) {  
                 EG1.increment(1);  
                 if (!EG1.toStageEndLeft()) EG1.update(EGADSR::event_stage_end, finalSynthesisParameters.dPos, finalSynthesisParameters.fFinalPitch, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
             }  
             if (EG2.active()) {  
                 EG2.increment(1);  
                 if (!EG2.toStageEndLeft()) EG2.update(EGADSR::event_stage_end, finalSynthesisParameters.dPos, finalSynthesisParameters.fFinalPitch, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
             }  
             EG3.increment(1);  
             if (!EG3.toEndLeft()) EG3.update(); // neutralize envelope coefficient if end reached  
439    
440              i = iSubFragmentEnd;      uint8_t Voice::GetVCFResonanceCtrl() {
441            uint8_t ctrl;
442            switch (pRegion->VCFResonanceController) {
443                case ::gig::vcf_res_ctrl_genpurpose3:
444                    ctrl = 18;
445                    break;
446                case ::gig::vcf_res_ctrl_genpurpose4:
447                    ctrl = 19;
448                    break;
449                case ::gig::vcf_res_ctrl_genpurpose5:
450                    ctrl = 80;
451                    break;
452                case ::gig::vcf_res_ctrl_genpurpose6:
453                    ctrl = 81;
454                    break;
455                case ::gig::vcf_res_ctrl_none:
456                default:
457                    ctrl = 0;
458          }          }
     }  
459    
460      /**          return ctrl;
461       *  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!  
      *  
      *  @see Kill()  
      */  
     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  
462    
463          if (itTriggerEvent && itKillEvent->FragmentPos() <= itTriggerEvent->FragmentPos()) return;      void Voice::TriggerEG1(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
464          this->itKillEvent = itKillEvent;          EG1.trigger(pRegion->EG1PreAttack,
465                        RTMath::Max(pRegion->EG1Attack, 0.0316) * egInfo.Attack,
466                        pRegion->EG1Hold,
467                        pRegion->EG1Decay1 * egInfo.Decay * velrelease,
468                        pRegion->EG1Decay2 * egInfo.Decay * velrelease,
469                        pRegion->EG1InfiniteSustain,
470                        pRegion->EG1Sustain,
471                        RTMath::Max(pRegion->EG1Release * velrelease, 0.014) * egInfo.Release,
472                        velocityAttenuation,
473                        sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
474        }
475    
476        void Voice::TriggerEG2(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
477            EG2.trigger(uint(RgnInfo.EG2PreAttack),
478                        RgnInfo.EG2Attack * egInfo.Attack,
479                        false,
480                        RgnInfo.EG2Decay1 * egInfo.Decay * velrelease,
481                        RgnInfo.EG2Decay2 * egInfo.Decay * velrelease,
482                        RgnInfo.EG2InfiniteSustain,
483                        uint(RgnInfo.EG2Sustain),
484                        RgnInfo.EG2Release * egInfo.Release * velrelease,
485                        velocityAttenuation,
486                        sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
487        }
488    
489        void Voice::ProcessGroupEvent(RTList<Event>::Iterator& itEvent) {
490            dmsg(4,("Voice %p processGroupEvents event type=%d", (void*)this, itEvent->Type));
491    
492            // TODO: The SustainPedal condition could be wrong, maybe the
493            // check should be if this Voice is in release stage or is a
494            // release sample instead. Need to test this in GSt.
495            // -- Andreas
496            //
497            // Commented sustain pedal check out. I don't think voices of the same
498            // note should be stopped at all, because it doesn't sound naturally
499            // with a drumkit.
500            // -- Christian, 2013-01-08
501            if (itEvent->Param.Note.Key != HostKey() /*||
502                !GetGigEngineChannel()->SustainPedal*/) {
503                dmsg(4,("Voice %p - kill", (void*)this));
504    
505                // kill the voice fast
506                pEG1->enterFadeOutStage();
507            }
508        }
509    
510        void Voice::CalculateFadeOutCoeff(float FadeOutTime, float SampleRate) {
511            EG1.CalculateFadeOutCoeff(FadeOutTime, SampleRate);
512        }
513    
514        int Voice::CalculatePan(uint8_t pan) {
515            int p;
516            // Gst behaviour: -64 and 63 are special cases
517            if (RgnInfo.Pan == -64)     p = pan * 2 - 127;
518            else if (RgnInfo.Pan == 63) p = pan * 2;
519            else                        p = pan + RgnInfo.Pan;
520    
521            if (p < 0) return 0;
522            if (p > 127) return 127;
523            return p;
524      }      }
525    
526  }} // namespace LinuxSampler::gig  }} // namespace LinuxSampler::gig
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