/[svn]/linuxsampler/trunk/src/engines/gig/Voice.cpp
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revision 1001 by schoenebeck, Wed Dec 27 16:17:08 2006 UTC revision 2203 by persson, Sat Jul 9 16:44:27 2011 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 - 2011 Christian Schoenebeck and Grigor Iliev      *
8   *                                                                         *   *                                                                         *
9   *   This program is free software; you can redistribute it and/or modify  *   *   This program is free software; you can redistribute it and/or modify  *
10   *   it under the terms of the GNU General Public License as published by  *   *   it under the terms of the GNU General Public License as published by  *
# Line 24  Line 25 
25  #include "../../common/Features.h"  #include "../../common/Features.h"
26  #include "Synthesizer.h"  #include "Synthesizer.h"
27  #include "Profiler.h"  #include "Profiler.h"
28    #include "Engine.h"
29    #include "EngineChannel.h"
30    
31  #include "Voice.h"  #include "Voice.h"
32    
33  namespace LinuxSampler { namespace gig {  namespace LinuxSampler { namespace gig {
34    
35      Voice::Voice() {      Voice::Voice() {
36          pEngine     = NULL;          pEngine = NULL;
37          pDiskThread = NULL;          pEG1 = &EG1;
38          PlaybackState = playback_state_end;          pEG2 = &EG2;
         pLFO1 = new LFOUnsigned(1.0f);  // amplitude EG (0..1 range)  
         pLFO2 = new LFOUnsigned(1.0f);  // filter EG (0..1 range)  
         pLFO3 = new LFOSigned(1200.0f); // pitch EG (-1200..+1200 range)  
         KeyGroup = 0;  
         SynthesisMode = 0; // set all mode bits to 0 first  
         // select synthesis implementation (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;
62       *  @param pDimRgn        - points to the dimension region which provides sample wave(s) and articulation data  
63       *  @param VoiceType      - type of this voice          si.HasLoops       = pRegion->SampleLoops;
64       *  @param iKeyGroup      - a value > 0 defines a key group in which this voice is member of          si.LoopStart      = (si.HasLoops) ? pRegion->pSampleLoops[0].LoopStart  : 0;
65       *  @returns 0 on success, a value < 0 if the voice wasn't triggered          si.LoopLength     = (si.HasLoops) ? pRegion->pSampleLoops[0].LoopLength : 0;
66       *           (either due to an error or e.g. because no region is          si.LoopPlayCount  = pSample->LoopPlayCount;
67       *           defined for the given key)          si.Unpitched      = !pRegion->PitchTrack;
68       */  
69      int Voice::Trigger(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent, int PitchBend, ::gig::DimensionRegion* pDimRgn, type_t VoiceType, int iKeyGroup) {          return si;
70          this->pEngineChannel = pEngineChannel;      }
71          this->pDimRgn        = pDimRgn;  
72        Voice::RegionInfo Voice::GetRegionInfo() {
73          #if CONFIG_DEVMODE          RegionInfo ri;
74          if (itNoteOnEvent->FragmentPos() > pEngine->MaxSamplesPerCycle) { // just a sanity check for debugging          ri.UnityNote = pRegion->UnityNote;
75              dmsg(1,("Voice::Trigger(): ERROR, TriggerDelay > Totalsamples\n"));          ri.FineTune  = pRegion->FineTune;
76          }          ri.Pan       = pRegion->Pan;
77          #endif // CONFIG_DEVMODE          ri.SampleStartOffset = pRegion->SampleStartOffset;
78    
79          Type            = VoiceType;          ri.EG2PreAttack        = pRegion->EG2PreAttack;
80          MIDIKey         = itNoteOnEvent->Param.Note.Key;          ri.EG2Attack           = pRegion->EG2Attack;
81          PlaybackState   = playback_state_init; // mark voice as triggered, but no audio rendered yet          ri.EG2Decay1           = pRegion->EG2Decay1;
82          Delay           = itNoteOnEvent->FragmentPos();          ri.EG2Decay2           = pRegion->EG2Decay2;
83          itTriggerEvent  = itNoteOnEvent;          ri.EG2Sustain          = pRegion->EG2Sustain;
84          itKillEvent     = Pool<Event>::Iterator();          ri.EG2InfiniteSustain  = pRegion->EG2InfiniteSustain;
85          KeyGroup        = iKeyGroup;          ri.EG2Release          = pRegion->EG2Release;
86          pSample         = pDimRgn->pSample; // sample won't change until the voice is finished  
87            ri.EG3Attack     = pRegion->EG3Attack;
88          // calculate volume          ri.EG3Depth      = pRegion->EG3Depth;
89          const double velocityAttenuation = pDimRgn->GetVelocityAttenuation(itNoteOnEvent->Param.Note.Velocity);          ri.VCFEnabled    = pRegion->VCFEnabled;
90            ri.VCFType       = Filter::vcf_type_t(pRegion->VCFType);
91          // For 16 bit samples, we downscale by 32768 to convert from          ri.VCFResonance  = pRegion->VCFResonance;
92          // int16 value range to DSP value range (which is  
93          // -1.0..1.0). For 24 bit, we downscale from int32.          ri.ReleaseTriggerDecay = 0.01053 * (256 >> pRegion->ReleaseTriggerDecay);
94          float volume = velocityAttenuation / (pSample->BitDepth == 16 ? 32768.0f : 32768.0f * 65536.0f);  
95            return ri;
96          volume *= pDimRgn->SampleAttenuation;      }
97    
98          // the volume of release triggered samples depends on note length      Voice::InstrumentInfo Voice::GetInstrumentInfo() {
99          if (Type == type_release_trigger) {          InstrumentInfo ii;
100              float noteLength = float(pEngine->FrameTime + Delay -          ii.FineTune = GetGigEngineChannel()->pInstrument->FineTune;
101                                       pEngineChannel->pMIDIKeyInfo[MIDIKey].NoteOnTime) / pEngine->SampleRate;          ii.PitchbendRange = GetGigEngineChannel()->pInstrument->PitchbendRange;
102              float attenuation = 1 - 0.01053 * (256 >> pDimRgn->ReleaseTriggerDecay) * noteLength;  
103              if (attenuation <= 0) return -1;          return ii;
104              volume *= attenuation;      }
105          }  
106        double Voice::GetSampleAttenuation() {
107          // select channel mode (mono or stereo)          return pRegion->SampleAttenuation;
108          SYNTHESIS_MODE_SET_CHANNELS(SynthesisMode, pSample->Channels == 2);      }
109          // select bit depth (16 or 24)  
110          SYNTHESIS_MODE_SET_BITDEPTH24(SynthesisMode, pSample->BitDepth == 24);      double Voice::GetVelocityAttenuation(uint8_t MIDIKeyVelocity) {
111            return pRegion->GetVelocityAttenuation(MIDIKeyVelocity);
112        }
113    
114        double Voice::GetVelocityRelease(uint8_t MIDIKeyVelocity) {
115            return pRegion->GetVelocityRelease(MIDIKeyVelocity);
116        }
117    
118        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                if (pRegion->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&
121                    itEvent->Param.CC.Controller == pRegion->AttenuationController.controller_number) {
122                    CrossfadeSmoother.update(AbstractEngine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.CC.Value)]);
123                }
124            }
125        }
126    
127        void Voice::ProcessCutoffEvent(RTList<Event>::Iterator& itEvent) {
128            int ccvalue = itEvent->Param.CC.Value;
129            if (VCFCutoffCtrl.value == ccvalue) return;
130            VCFCutoffCtrl.value = ccvalue;
131            if (pRegion->VCFCutoffControllerInvert)  ccvalue = 127 - ccvalue;
132            if (ccvalue < pRegion->VCFVelocityScale) ccvalue = pRegion->VCFVelocityScale;
133            float cutoff = CutoffBase * float(ccvalue);
134            if (cutoff > 127.0f) cutoff = 127.0f;
135    
136            VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of fFinalCutoff next time
137            fFinalCutoff = cutoff;
138        }
139    
140          // get starting crossfade volume level      double Voice::CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity) {
141          float crossfadeVolume;          float crossfadeVolume;
142          switch (pDimRgn->AttenuationController.type) {          switch (pRegion->AttenuationController.type) {
143              case ::gig::attenuation_ctrl_t::type_channelaftertouch:              case ::gig::attenuation_ctrl_t::type_channelaftertouch:
144                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(pEngineChannel->ControllerTable[128])];                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[128])];
145                  break;                  break;
146              case ::gig::attenuation_ctrl_t::type_velocity:              case ::gig::attenuation_ctrl_t::type_velocity:
147                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(itNoteOnEvent->Param.Note.Velocity)];                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(MIDIKeyVelocity)];
148                  break;                  break;
149              case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate              case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate
150                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(pEngineChannel->ControllerTable[pDimRgn->AttenuationController.controller_number])];                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[pRegion->AttenuationController.controller_number])];
151                  break;                  break;
152              case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined              case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined
153              default:              default:
154                  crossfadeVolume = 1.0f;                  crossfadeVolume = 1.0f;
155          }          }
156    
157          VolumeLeft  = volume * Engine::PanCurve[64 - pDimRgn->Pan];          return crossfadeVolume;
158          VolumeRight = volume * Engine::PanCurve[64 + pDimRgn->Pan];      }
159    
160          float subfragmentRate = pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE;      double Voice::GetEG1ControllerValue(uint8_t MIDIKeyVelocity) {
161          CrossfadeSmoother.trigger(crossfadeVolume, subfragmentRate);          double eg1controllervalue = 0;
162          VolumeSmoother.trigger(pEngineChannel->GlobalVolume * pEngineChannel->MidiVolume, subfragmentRate);          switch (pRegion->EG1Controller.type) {
163          PanLeftSmoother.trigger(pEngineChannel->GlobalPanLeft, subfragmentRate);              case ::gig::eg1_ctrl_t::type_none: // no controller defined
164          PanRightSmoother.trigger(pEngineChannel->GlobalPanRight, subfragmentRate);                  eg1controllervalue = 0;
165                    break;
166          finalSynthesisParameters.dPos = pDimRgn->SampleStartOffset; // offset where we should start playback of sample (0 - 2000 sample points)              case ::gig::eg1_ctrl_t::type_channelaftertouch:
167          Pos = pDimRgn->SampleStartOffset;                  eg1controllervalue = GetGigEngineChannel()->ControllerTable[128];
168                    break;
169          // Check if the sample needs disk streaming or is too short for that              case ::gig::eg1_ctrl_t::type_velocity:
170          long cachedsamples = pSample->GetCache().Size / pSample->FrameSize;                  eg1controllervalue = MIDIKeyVelocity;
171          DiskVoice          = cachedsamples < pSample->SamplesTotal;                  break;
172                case ::gig::eg1_ctrl_t::type_controlchange: // MIDI control change controller
173          const DLS::sample_loop_t& loopinfo = pDimRgn->pSampleLoops[0];                  eg1controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG1Controller.controller_number];
174                    break;
         if (DiskVoice) { // voice to be streamed from disk  
             MaxRAMPos = cachedsamples - (pEngine->MaxSamplesPerCycle << CONFIG_MAX_PITCH) / pSample->Channels; //TODO: this calculation is too pessimistic and may better be moved to Render() method, so it calculates MaxRAMPos dependent to the current demand of sample points to be rendered (e.g. in case of JACK)  
   
             // check if there's a loop defined which completely fits into the cached (RAM) part of the sample  
             RAMLoop = (pDimRgn->SampleLoops && (loopinfo.LoopStart + loopinfo.LoopLength) <= MaxRAMPos);  
   
             if (pDiskThread->OrderNewStream(&DiskStreamRef, pDimRgn, MaxRAMPos, !RAMLoop) < 0) {  
                 dmsg(1,("Disk stream order failed!\n"));  
                 KillImmediately();  
                 return -1;  
             }  
             dmsg(4,("Disk voice launched (cached samples: %d, total Samples: %d, MaxRAMPos: %d, RAMLooping: %s)\n", cachedsamples, pSample->SamplesTotal, MaxRAMPos, (RAMLoop) ? "yes" : "no"));  
175          }          }
176          else { // RAM only voice          if (pRegion->EG1ControllerInvert) eg1controllervalue = 127 - eg1controllervalue;
             MaxRAMPos = cachedsamples;  
             RAMLoop = (pDimRgn->SampleLoops != 0);  
             dmsg(4,("RAM only voice launched (Looping: %s)\n", (RAMLoop) ? "yes" : "no"));  
         }  
         if (RAMLoop) {  
             loop.uiTotalCycles = pSample->LoopPlayCount;  
             loop.uiCyclesLeft  = pSample->LoopPlayCount;  
             loop.uiStart       = loopinfo.LoopStart;  
             loop.uiEnd         = loopinfo.LoopStart + loopinfo.LoopLength;  
             loop.uiSize        = loopinfo.LoopLength;  
         }  
   
         // calculate initial pitch value  
         {  
             double pitchbasecents = pDimRgn->FineTune + (int) pEngine->ScaleTuning[MIDIKey % 12];  
             if (pDimRgn->PitchTrack) pitchbasecents += (MIDIKey - (int) pDimRgn->UnityNote) * 100;  
             this->PitchBase = RTMath::CentsToFreqRatio(pitchbasecents) * (double(pSample->SamplesPerSecond) / double(pEngine->SampleRate));  
             this->PitchBend = RTMath::CentsToFreqRatio(((double) PitchBend / 8192.0) * 200.0); // pitchbend wheel +-2 semitones = 200 cents  
         }  
   
         // the length of the decay and release curves are dependent on the velocity  
         const double velrelease = 1 / pDimRgn->GetVelocityRelease(itNoteOnEvent->Param.Note.Velocity);  
   
         // setup EG 1 (VCA EG)  
         {  
             // get current value of EG1 controller  
             double eg1controllervalue;  
             switch (pDimRgn->EG1Controller.type) {  
                 case ::gig::eg1_ctrl_t::type_none: // no controller defined  
                     eg1controllervalue = 0;  
                     break;  
                 case ::gig::eg1_ctrl_t::type_channelaftertouch:  
                     eg1controllervalue = pEngineChannel->ControllerTable[128];  
                     break;  
                 case ::gig::eg1_ctrl_t::type_velocity:  
                     eg1controllervalue = itNoteOnEvent->Param.Note.Velocity;  
                     break;  
                 case ::gig::eg1_ctrl_t::type_controlchange: // MIDI control change controller  
                     eg1controllervalue = pEngineChannel->ControllerTable[pDimRgn->EG1Controller.controller_number];  
                     break;  
             }  
             if (pDimRgn->EG1ControllerInvert) eg1controllervalue = 127 - eg1controllervalue;  
177    
178              // calculate influence of EG1 controller on EG1's parameters          return eg1controllervalue;
179              // (eg1attack is different from the others)      }
             double eg1attack  = (pDimRgn->EG1ControllerAttackInfluence)  ?  
                 1 + 0.031 * (double) (pDimRgn->EG1ControllerAttackInfluence == 1 ?  
                                       1 : 1 << pDimRgn->EG1ControllerAttackInfluence) * eg1controllervalue : 1.0;  
             double eg1decay   = (pDimRgn->EG1ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pDimRgn->EG1ControllerDecayInfluence)   * eg1controllervalue : 1.0;  
             double eg1release = (pDimRgn->EG1ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pDimRgn->EG1ControllerReleaseInfluence) * eg1controllervalue : 1.0;  
   
             EG1.trigger(pDimRgn->EG1PreAttack,  
                         pDimRgn->EG1Attack * eg1attack,  
                         pDimRgn->EG1Hold,  
                         pDimRgn->EG1Decay1 * eg1decay * velrelease,  
                         pDimRgn->EG1Decay2 * eg1decay * velrelease,  
                         pDimRgn->EG1InfiniteSustain,  
                         pDimRgn->EG1Sustain,  
                         pDimRgn->EG1Release * eg1release * velrelease,  
                         velocityAttenuation,  
                         pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
         }  
   
 #ifdef CONFIG_INTERPOLATE_VOLUME  
         // setup initial volume in synthesis parameters  
 #ifdef CONFIG_PROCESS_MUTED_CHANNELS  
         if (pEngineChannel->GetMute()) {  
             finalSynthesisParameters.fFinalVolumeLeft  = 0;  
             finalSynthesisParameters.fFinalVolumeRight = 0;  
         }  
         else  
 #else  
         {  
             float finalVolume = pEngineChannel->GlobalVolume * pEngineChannel->MidiVolume * crossfadeVolume * EG1.getLevel();  
   
             finalSynthesisParameters.fFinalVolumeLeft  = finalVolume * VolumeLeft  * pEngineChannel->GlobalPanLeft;  
             finalSynthesisParameters.fFinalVolumeRight = finalVolume * VolumeRight * pEngineChannel->GlobalPanRight;  
         }  
 #endif  
 #endif  
   
         // setup EG 2 (VCF Cutoff EG)  
         {  
             // get current value of EG2 controller  
             double eg2controllervalue;  
             switch (pDimRgn->EG2Controller.type) {  
                 case ::gig::eg2_ctrl_t::type_none: // no controller defined  
                     eg2controllervalue = 0;  
                     break;  
                 case ::gig::eg2_ctrl_t::type_channelaftertouch:  
                     eg2controllervalue = pEngineChannel->ControllerTable[128];  
                     break;  
                 case ::gig::eg2_ctrl_t::type_velocity:  
                     eg2controllervalue = itNoteOnEvent->Param.Note.Velocity;  
                     break;  
                 case ::gig::eg2_ctrl_t::type_controlchange: // MIDI control change controller  
                     eg2controllervalue = pEngineChannel->ControllerTable[pDimRgn->EG2Controller.controller_number];  
                     break;  
             }  
             if (pDimRgn->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue;  
   
             // 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,  
                         pDimRgn->EG2Decay1 * eg2decay * velrelease,  
                         pDimRgn->EG2Decay2 * eg2decay * velrelease,  
                         pDimRgn->EG2InfiniteSustain,  
                         pDimRgn->EG2Sustain,  
                         pDimRgn->EG2Release * eg2release * velrelease,  
                         velocityAttenuation,  
                         pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
         }  
   
   
         // setup EG 3 (VCO EG)  
         {  
             // if portamento mode is on, we dedicate EG3 purely for portamento, otherwise if portamento is off we do as told by the patch  
             bool  bPortamento = pEngineChannel->PortamentoMode && pEngineChannel->PortamentoPos >= 0.0f;  
             float eg3depth = (bPortamento)  
                                  ? RTMath::CentsToFreqRatio((pEngineChannel->PortamentoPos - (float) MIDIKey) * 100)  
                                  : RTMath::CentsToFreqRatio(pDimRgn->EG3Depth);  
             float eg3time = (bPortamento)  
                                 ? pEngineChannel->PortamentoTime  
                                 : pDimRgn->EG3Attack;  
             EG3.trigger(eg3depth, eg3time, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
             dmsg(5,("PortamentoPos=%f, depth=%f, time=%f\n", pEngineChannel->PortamentoPos, eg3depth, eg3time));  
         }  
   
   
         // setup LFO 1 (VCA LFO)  
         {  
             uint16_t lfo1_internal_depth;  
             switch (pDimRgn->LFO1Controller) {  
                 case ::gig::lfo1_ctrl_internal:  
                     lfo1_internal_depth  = pDimRgn->LFO1InternalDepth;  
                     pLFO1->ExtController = 0; // no external controller  
                     bLFO1Enabled         = (lfo1_internal_depth > 0);  
                     break;  
                 case ::gig::lfo1_ctrl_modwheel:  
                     lfo1_internal_depth  = 0;  
                     pLFO1->ExtController = 1; // MIDI controller 1  
                     bLFO1Enabled         = (pDimRgn->LFO1ControlDepth > 0);  
                     break;  
                 case ::gig::lfo1_ctrl_breath:  
                     lfo1_internal_depth  = 0;  
                     pLFO1->ExtController = 2; // MIDI controller 2  
                     bLFO1Enabled         = (pDimRgn->LFO1ControlDepth > 0);  
                     break;  
                 case ::gig::lfo1_ctrl_internal_modwheel:  
                     lfo1_internal_depth  = pDimRgn->LFO1InternalDepth;  
                     pLFO1->ExtController = 1; // MIDI controller 1  
                     bLFO1Enabled         = (lfo1_internal_depth > 0 || pDimRgn->LFO1ControlDepth > 0);  
                     break;  
                 case ::gig::lfo1_ctrl_internal_breath:  
                     lfo1_internal_depth  = pDimRgn->LFO1InternalDepth;  
                     pLFO1->ExtController = 2; // MIDI controller 2  
                     bLFO1Enabled         = (lfo1_internal_depth > 0 || pDimRgn->LFO1ControlDepth > 0);  
                     break;  
                 default:  
                     lfo1_internal_depth  = 0;  
                     pLFO1->ExtController = 0; // no external controller  
                     bLFO1Enabled         = false;  
             }  
             if (bLFO1Enabled) {  
                 pLFO1->trigger(pDimRgn->LFO1Frequency,  
                                start_level_min,  
                                lfo1_internal_depth,  
                                pDimRgn->LFO1ControlDepth,  
                                pDimRgn->LFO1FlipPhase,  
                                pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
                 pLFO1->update(pLFO1->ExtController ? pEngineChannel->ControllerTable[pLFO1->ExtController] : 0);  
             }  
         }  
180    
181        Voice::EGInfo Voice::CalculateEG1ControllerInfluence(double eg1ControllerValue) {
182            EGInfo eg;
183            // (eg1attack is different from the others)
184            eg.Attack  = (pRegion->EG1ControllerAttackInfluence)  ?
185                1 + 0.031 * (double) (pRegion->EG1ControllerAttackInfluence == 1 ?
186                                      1 : 1 << pRegion->EG1ControllerAttackInfluence) * eg1ControllerValue : 1.0;
187            eg.Decay   = (pRegion->EG1ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerDecayInfluence)   * eg1ControllerValue : 1.0;
188            eg.Release = (pRegion->EG1ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerReleaseInfluence) * eg1ControllerValue : 1.0;
189    
190          // setup LFO 2 (VCF Cutoff LFO)          return eg;
191          {      }
             uint16_t lfo2_internal_depth;  
             switch (pDimRgn->LFO2Controller) {  
                 case ::gig::lfo2_ctrl_internal:  
                     lfo2_internal_depth  = pDimRgn->LFO2InternalDepth;  
                     pLFO2->ExtController = 0; // no external controller  
                     bLFO2Enabled         = (lfo2_internal_depth > 0);  
                     break;  
                 case ::gig::lfo2_ctrl_modwheel:  
                     lfo2_internal_depth  = 0;  
                     pLFO2->ExtController = 1; // MIDI controller 1  
                     bLFO2Enabled         = (pDimRgn->LFO2ControlDepth > 0);  
                     break;  
                 case ::gig::lfo2_ctrl_foot:  
                     lfo2_internal_depth  = 0;  
                     pLFO2->ExtController = 4; // MIDI controller 4  
                     bLFO2Enabled         = (pDimRgn->LFO2ControlDepth > 0);  
                     break;  
                 case ::gig::lfo2_ctrl_internal_modwheel:  
                     lfo2_internal_depth  = pDimRgn->LFO2InternalDepth;  
                     pLFO2->ExtController = 1; // MIDI controller 1  
                     bLFO2Enabled         = (lfo2_internal_depth > 0 || pDimRgn->LFO2ControlDepth > 0);  
                     break;  
                 case ::gig::lfo2_ctrl_internal_foot:  
                     lfo2_internal_depth  = pDimRgn->LFO2InternalDepth;  
                     pLFO2->ExtController = 4; // MIDI controller 4  
                     bLFO2Enabled         = (lfo2_internal_depth > 0 || pDimRgn->LFO2ControlDepth > 0);  
                     break;  
                 default:  
                     lfo2_internal_depth  = 0;  
                     pLFO2->ExtController = 0; // no external controller  
                     bLFO2Enabled         = false;  
             }  
             if (bLFO2Enabled) {  
                 pLFO2->trigger(pDimRgn->LFO2Frequency,  
                                start_level_max,  
                                lfo2_internal_depth,  
                                pDimRgn->LFO2ControlDepth,  
                                pDimRgn->LFO2FlipPhase,  
                                pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
                 pLFO2->update(pLFO2->ExtController ? pEngineChannel->ControllerTable[pLFO2->ExtController] : 0);  
             }  
         }  
   
192    
193          // setup LFO 3 (VCO LFO)      double Voice::GetEG2ControllerValue(uint8_t MIDIKeyVelocity) {
194          {          double eg2controllervalue = 0;
195              uint16_t lfo3_internal_depth;          switch (pRegion->EG2Controller.type) {
196              switch (pDimRgn->LFO3Controller) {              case ::gig::eg2_ctrl_t::type_none: // no controller defined
197                  case ::gig::lfo3_ctrl_internal:                  eg2controllervalue = 0;
198                      lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;                  break;
199                      pLFO3->ExtController = 0; // no external controller              case ::gig::eg2_ctrl_t::type_channelaftertouch:
200                      bLFO3Enabled         = (lfo3_internal_depth > 0);                  eg2controllervalue = GetGigEngineChannel()->ControllerTable[128];
201                      break;                  break;
202                  case ::gig::lfo3_ctrl_modwheel:              case ::gig::eg2_ctrl_t::type_velocity:
203                      lfo3_internal_depth  = 0;                  eg2controllervalue = MIDIKeyVelocity;
204                      pLFO3->ExtController = 1; // MIDI controller 1                  break;
205                      bLFO3Enabled         = (pDimRgn->LFO3ControlDepth > 0);              case ::gig::eg2_ctrl_t::type_controlchange: // MIDI control change controller
206                      break;                  eg2controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG2Controller.controller_number];
207                  case ::gig::lfo3_ctrl_aftertouch:                  break;
                     lfo3_internal_depth  = 0;  
                     pLFO3->ExtController = 128;  
                     bLFO3Enabled         = true;  
                     break;  
                 case ::gig::lfo3_ctrl_internal_modwheel:  
                     lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;  
                     pLFO3->ExtController = 1; // MIDI controller 1  
                     bLFO3Enabled         = (lfo3_internal_depth > 0 || pDimRgn->LFO3ControlDepth > 0);  
                     break;  
                 case ::gig::lfo3_ctrl_internal_aftertouch:  
                     lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;  
                     pLFO1->ExtController = 128;  
                     bLFO3Enabled         = (lfo3_internal_depth > 0 || pDimRgn->LFO3ControlDepth > 0);  
                     break;  
                 default:  
                     lfo3_internal_depth  = 0;  
                     pLFO3->ExtController = 0; // no external controller  
                     bLFO3Enabled         = false;  
             }  
             if (bLFO3Enabled) {  
                 pLFO3->trigger(pDimRgn->LFO3Frequency,  
                                start_level_mid,  
                                lfo3_internal_depth,  
                                pDimRgn->LFO3ControlDepth,  
                                false,  
                                pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
                 pLFO3->update(pLFO3->ExtController ? pEngineChannel->ControllerTable[pLFO3->ExtController] : 0);  
             }  
208          }          }
209            if (pRegion->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue;
210    
211            return eg2controllervalue;
212        }
213    
214          #if CONFIG_FORCE_FILTER      Voice::EGInfo Voice::CalculateEG2ControllerInfluence(double eg2ControllerValue) {
215          const bool bUseFilter = true;          EGInfo eg;
216          #else // use filter only if instrument file told so          eg.Attack  = (pRegion->EG2ControllerAttackInfluence)  ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerAttackInfluence)  * eg2ControllerValue : 1.0;
217          const bool bUseFilter = pDimRgn->VCFEnabled;          eg.Decay   = (pRegion->EG2ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerDecayInfluence)   * eg2ControllerValue : 1.0;
218          #endif // CONFIG_FORCE_FILTER          eg.Release = (pRegion->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerReleaseInfluence) * eg2ControllerValue : 1.0;
         SYNTHESIS_MODE_SET_FILTER(SynthesisMode, bUseFilter);  
         if (bUseFilter) {  
             #ifdef CONFIG_OVERRIDE_CUTOFF_CTRL  
             VCFCutoffCtrl.controller = CONFIG_OVERRIDE_CUTOFF_CTRL;  
             #else // use the one defined in the instrument file  
             switch (pDimRgn->VCFCutoffController) {  
                 case ::gig::vcf_cutoff_ctrl_modwheel:  
                     VCFCutoffCtrl.controller = 1;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_effect1:  
                     VCFCutoffCtrl.controller = 12;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_effect2:  
                     VCFCutoffCtrl.controller = 13;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_breath:  
                     VCFCutoffCtrl.controller = 2;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_foot:  
                     VCFCutoffCtrl.controller = 4;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_sustainpedal:  
                     VCFCutoffCtrl.controller = 64;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_softpedal:  
                     VCFCutoffCtrl.controller = 67;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_genpurpose7:  
                     VCFCutoffCtrl.controller = 82;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_genpurpose8:  
                     VCFCutoffCtrl.controller = 83;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_aftertouch:  
                     VCFCutoffCtrl.controller = 128;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_none:  
                 default:  
                     VCFCutoffCtrl.controller = 0;  
                     break;  
             }  
             #endif // CONFIG_OVERRIDE_CUTOFF_CTRL  
   
             #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);  
             if (cutoff > 127.0f) cutoff = 127.0f;  
   
             // calculate resonance  
             float resonance = (float) (VCFResonanceCtrl.controller ? VCFResonanceCtrl.value : pDimRgn->VCFResonance);  
   
             VCFCutoffCtrl.fvalue    = cutoff;  
             VCFResonanceCtrl.fvalue = resonance;  
         }  
         else {  
             VCFCutoffCtrl.controller    = 0;  
             VCFResonanceCtrl.controller = 0;  
         }  
219    
220          return 0; // success          return eg;
221      }      }
222    
223      /**      void Voice::InitLFO1() {
224       *  Renders the audio data for this voice for the current audio fragment.          uint16_t lfo1_internal_depth;
225       *  The sample input data can either come from RAM (cached sample or sample          switch (pRegion->LFO1Controller) {
226       *  part) or directly from disk. The output signal will be rendered by              case ::gig::lfo1_ctrl_internal:
227       *  resampling / interpolation. If this voice is a disk streaming voice and                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
228       *  the voice completely played back the cached RAM part of the sample, it                  pLFO1->ExtController = 0; // no external controller
229       *  will automatically switch to disk playback for the next RenderAudio()                  bLFO1Enabled         = (lfo1_internal_depth > 0);
230       *  call.                  break;
231       *              case ::gig::lfo1_ctrl_modwheel:
232       *  @param Samples - number of samples to be rendered in this audio fragment cycle                  lfo1_internal_depth  = 0;
233       */                  pLFO1->ExtController = 1; // MIDI controller 1
234      void Voice::Render(uint Samples) {                  bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
235                    break;
236          // select default values for synthesis mode bits              case ::gig::lfo1_ctrl_breath:
237          SYNTHESIS_MODE_SET_LOOP(SynthesisMode, false);                  lfo1_internal_depth  = 0;
238                    pLFO1->ExtController = 2; // MIDI controller 2
239          switch (this->PlaybackState) {                  bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
240                    break;
241              case playback_state_init:              case ::gig::lfo1_ctrl_internal_modwheel:
242                  this->PlaybackState = playback_state_ram; // we always start playback from RAM cache and switch then to disk if needed                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
243                  // no break - continue with playback_state_ram                  pLFO1->ExtController = 1; // MIDI controller 1
244                    bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
245              case playback_state_ram: {                  break;
246                      if (RAMLoop) SYNTHESIS_MODE_SET_LOOP(SynthesisMode, true); // enable looping              case ::gig::lfo1_ctrl_internal_breath:
247                    lfo1_internal_depth  = pRegion->LFO1InternalDepth;
248                      // render current fragment                  pLFO1->ExtController = 2; // MIDI controller 2
249                      Synthesize(Samples, (sample_t*) pSample->GetCache().pStart, Delay);                  bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
250                    break;
251                      if (DiskVoice) {              default:
252                          // check if we reached the allowed limit of the sample RAM cache                  lfo1_internal_depth  = 0;
253                          if (finalSynthesisParameters.dPos > MaxRAMPos) {                  pLFO1->ExtController = 0; // no external controller
254                              dmsg(5,("Voice: switching to disk playback (Pos=%f)\n", finalSynthesisParameters.dPos));                  bLFO1Enabled         = false;
255                              this->PlaybackState = playback_state_disk;          }
256                          }          if (bLFO1Enabled) {
257                      } else if (finalSynthesisParameters.dPos >= pSample->GetCache().Size / pSample->FrameSize) {              pLFO1->trigger(pRegion->LFO1Frequency,
258                          this->PlaybackState = playback_state_end;                             start_level_min,
259                      }                             lfo1_internal_depth,
260                  }                             pRegion->LFO1ControlDepth,
261                  break;                             pRegion->LFO1FlipPhase,
262                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
263              case playback_state_disk: {              pLFO1->update(pLFO1->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO1->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 = (sample_t*)DiskStreamRef.pStream->GetReadPtr(); // get the current read_ptr within the ringbuffer where we read the samples from  
   
                     // render current audio fragment  
                     Synthesize(Samples, ptr, Delay);  
   
                     const int iPos = (int) finalSynthesisParameters.dPos;  
                     const int readSampleWords = iPos * pSample->Channels; // amount of sample words actually been read  
                     DiskStreamRef.pStream->IncrementReadPos(readSampleWords);  
                     finalSynthesisParameters.dPos -= iPos; // just keep fractional part of playback position  
   
                     // change state of voice to 'end' if we really reached the end of the sample data  
                     if (RealSampleWordsLeftToRead >= 0) {  
                         RealSampleWordsLeftToRead -= readSampleWords;  
                         if (RealSampleWordsLeftToRead <= 0) this->PlaybackState = playback_state_end;  
                     }  
                 }  
                 break;  
   
             case playback_state_end:  
                 std::cerr << "gig::Voice::Render(): entered with playback_state_end, this is a bug!\n" << std::flush;  
                 break;  
         }  
   
         // Reset delay  
         Delay = 0;  
   
         itTriggerEvent = Pool<Event>::Iterator();  
   
         // If sample stream or release stage finished, kill the voice  
         if (PlaybackState == playback_state_end || EG1.getSegmentType() == EGADSR::segment_end) KillImmediately();  
     }  
   
     /**  
      *  Resets voice variables. Should only be called if rendering process is  
      *  suspended / not running.  
      */  
     void Voice::Reset() {  
         finalSynthesisParameters.filterLeft.Reset();  
         finalSynthesisParameters.filterRight.Reset();  
         DiskStreamRef.pStream = NULL;  
         DiskStreamRef.hStream = 0;  
         DiskStreamRef.State   = Stream::state_unused;  
         DiskStreamRef.OrderID = 0;  
         PlaybackState = playback_state_end;  
         itTriggerEvent = Pool<Event>::Iterator();  
         itKillEvent    = Pool<Event>::Iterator();  
     }  
   
     /**  
      * Process given list of MIDI note on, note off and sustain pedal events  
      * for the given time.  
      *  
      * @param itEvent - iterator pointing to the next event to be processed  
      * @param End     - youngest time stamp where processing should be stopped  
      */  
     void Voice::processTransitionEvents(RTList<Event>::Iterator& itEvent, uint End) {  
         for (; itEvent && itEvent->FragmentPos() <= End; ++itEvent) {  
             if (itEvent->Type == Event::type_release) {  
                 EG1.update(EGADSR::event_release, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
                 EG2.update(EGADSR::event_release, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
             } else if (itEvent->Type == Event::type_cancel_release) {  
                 EG1.update(EGADSR::event_cancel_release, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
                 EG2.update(EGADSR::event_cancel_release, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
             }  
264          }          }
265      }      }
266    
267      /**      void Voice::InitLFO2() {
268       * Process given list of MIDI control change and pitch bend events for          uint16_t lfo2_internal_depth;
269       * the given time.          switch (pRegion->LFO2Controller) {
270       *              case ::gig::lfo2_ctrl_internal:
271       * @param itEvent - iterator pointing to the next event to be processed                  lfo2_internal_depth  = pRegion->LFO2InternalDepth;
272       * @param End     - youngest time stamp where processing should be stopped                  pLFO2->ExtController = 0; // no external controller
273       */                  bLFO2Enabled         = (lfo2_internal_depth > 0);
274      void Voice::processCCEvents(RTList<Event>::Iterator& itEvent, uint End) {                  break;
275          for (; itEvent && itEvent->FragmentPos() <= End; ++itEvent) {              case ::gig::lfo2_ctrl_modwheel:
276              if (itEvent->Type == Event::type_control_change &&                  lfo2_internal_depth  = 0;
277                  itEvent->Param.CC.Controller) { // if (valid) MIDI control change event                  pLFO2->ExtController = 1; // MIDI controller 1
278                  if (itEvent->Param.CC.Controller == VCFCutoffCtrl.controller) {                  bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
279                      processCutoffEvent(itEvent);                  break;
280                  }              case ::gig::lfo2_ctrl_foot:
281                  if (itEvent->Param.CC.Controller == VCFResonanceCtrl.controller) {                  lfo2_internal_depth  = 0;
282                      processResonanceEvent(itEvent);                  pLFO2->ExtController = 4; // MIDI controller 4
283                  }                  bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
284                  if (itEvent->Param.CC.Controller == pLFO1->ExtController) {                  break;
285                      pLFO1->update(itEvent->Param.CC.Value);              case ::gig::lfo2_ctrl_internal_modwheel:
286                  }                  lfo2_internal_depth  = pRegion->LFO2InternalDepth;
287                  if (itEvent->Param.CC.Controller == pLFO2->ExtController) {                  pLFO2->ExtController = 1; // MIDI controller 1
288                      pLFO2->update(itEvent->Param.CC.Value);                  bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
289                  }                  break;
290                  if (itEvent->Param.CC.Controller == pLFO3->ExtController) {              case ::gig::lfo2_ctrl_internal_foot:
291                      pLFO3->update(itEvent->Param.CC.Value);                  lfo2_internal_depth  = pRegion->LFO2InternalDepth;
292                  }                  pLFO2->ExtController = 4; // MIDI controller 4
293                  if (pDimRgn->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&                  bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
294                      itEvent->Param.CC.Controller == pDimRgn->AttenuationController.controller_number) {                  break;
295                      CrossfadeSmoother.update(Engine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.CC.Value)]);              default:
296                  }                  lfo2_internal_depth  = 0;
297                  if (itEvent->Param.CC.Controller == 7) { // volume                  pLFO2->ExtController = 0; // no external controller
298                      VolumeSmoother.update(Engine::VolumeCurve[itEvent->Param.CC.Value]);                  bLFO2Enabled         = false;
299                  } else if (itEvent->Param.CC.Controller == 10) { // panpot          }
300                      PanLeftSmoother.update(Engine::PanCurve[128 - itEvent->Param.CC.Value]);          if (bLFO2Enabled) {
301                      PanRightSmoother.update(Engine::PanCurve[itEvent->Param.CC.Value]);              pLFO2->trigger(pRegion->LFO2Frequency,
302                  }                             start_level_max,
303              } else if (itEvent->Type == Event::type_pitchbend) { // if pitch bend event                             lfo2_internal_depth,
304                  processPitchEvent(itEvent);                             pRegion->LFO2ControlDepth,
305              }                             pRegion->LFO2FlipPhase,
306                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
307                pLFO2->update(pLFO2->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO2->ExtController] : 0);
308          }          }
309      }      }
310    
311      void Voice::processPitchEvent(RTList<Event>::Iterator& itEvent) {      void Voice::InitLFO3() {
312          const float pitch = RTMath::CentsToFreqRatio(((double) itEvent->Param.Pitch.Pitch / 8192.0) * 200.0); // +-two semitones = +-200 cents          uint16_t lfo3_internal_depth;
313          finalSynthesisParameters.fFinalPitch *= pitch;          switch (pRegion->LFO3Controller) {
314          PitchBend = pitch;              case ::gig::lfo3_ctrl_internal:
315                    lfo3_internal_depth  = pRegion->LFO3InternalDepth;
316                    pLFO3->ExtController = 0; // no external controller
317                    bLFO3Enabled         = (lfo3_internal_depth > 0);
318                    break;
319                case ::gig::lfo3_ctrl_modwheel:
320                    lfo3_internal_depth  = 0;
321                    pLFO3->ExtController = 1; // MIDI controller 1
322                    bLFO3Enabled         = (pRegion->LFO3ControlDepth > 0);
323                    break;
324                case ::gig::lfo3_ctrl_aftertouch:
325                    lfo3_internal_depth  = 0;
326                    pLFO3->ExtController = 128;
327                    bLFO3Enabled         = true;
328                    break;
329                case ::gig::lfo3_ctrl_internal_modwheel:
330                    lfo3_internal_depth  = pRegion->LFO3InternalDepth;
331                    pLFO3->ExtController = 1; // MIDI controller 1
332                    bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
333                    break;
334                case ::gig::lfo3_ctrl_internal_aftertouch:
335                    lfo3_internal_depth  = pRegion->LFO3InternalDepth;
336                    pLFO3->ExtController = 128;
337                    bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
338                    break;
339                default:
340                    lfo3_internal_depth  = 0;
341                    pLFO3->ExtController = 0; // no external controller
342                    bLFO3Enabled         = false;
343            }
344            if (bLFO3Enabled) {
345                pLFO3->trigger(pRegion->LFO3Frequency,
346                               start_level_mid,
347                               lfo3_internal_depth,
348                               pRegion->LFO3ControlDepth,
349                               false,
350                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
351                pLFO3->update(pLFO3->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO3->ExtController] : 0);
352            }
353      }      }
354    
355      void Voice::processCutoffEvent(RTList<Event>::Iterator& itEvent) {      float Voice::CalculateCutoffBase(uint8_t MIDIKeyVelocity) {
356          int ccvalue = itEvent->Param.CC.Value;          float cutoff = pRegion->GetVelocityCutoff(MIDIKeyVelocity);
357          if (VCFCutoffCtrl.value == ccvalue) return;          if (pRegion->VCFKeyboardTracking) {
358          VCFCutoffCtrl.value == ccvalue;              cutoff *= RTMath::CentsToFreqRatioUnlimited((MIDIKey - pRegion->VCFKeyboardTrackingBreakpoint) * 100);
359          if (pDimRgn->VCFCutoffControllerInvert)  ccvalue = 127 - ccvalue;          }
360          if (ccvalue < pDimRgn->VCFVelocityScale) ccvalue = pDimRgn->VCFVelocityScale;          return cutoff;
361          float cutoff = CutoffBase * float(ccvalue);      }
362          if (cutoff > 127.0f) cutoff = 127.0f;  
363        float Voice::CalculateFinalCutoff(float cutoffBase) {
364            int cvalue;
365            if (VCFCutoffCtrl.controller) {
366                cvalue = GetGigEngineChannel()->ControllerTable[VCFCutoffCtrl.controller];
367                if (pRegion->VCFCutoffControllerInvert) cvalue = 127 - cvalue;
368                // VCFVelocityScale in this case means Minimum cutoff
369                if (cvalue < pRegion->VCFVelocityScale) cvalue = pRegion->VCFVelocityScale;
370            }
371            else {
372                cvalue = pRegion->VCFCutoff;
373            }
374            float fco = cutoffBase * float(cvalue);
375            if (fco > 127.0f) fco = 127.0f;
376    
377          VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of fFinalCutoff next time          return fco;
         fFinalCutoff = cutoff;  
378      }      }
379    
380      void Voice::processResonanceEvent(RTList<Event>::Iterator& itEvent) {      uint8_t Voice::GetVCFCutoffCtrl() {
381          // convert absolute controller value to differential          uint8_t ctrl;
382          const int ctrldelta = itEvent->Param.CC.Value - VCFResonanceCtrl.value;          switch (pRegion->VCFCutoffController) {
383          VCFResonanceCtrl.value = itEvent->Param.CC.Value;              case ::gig::vcf_cutoff_ctrl_modwheel:
384          const float resonancedelta = (float) ctrldelta;                  ctrl = 1;
385          fFinalResonance += resonancedelta;                  break;
386          // needed for initialization of parameter              case ::gig::vcf_cutoff_ctrl_effect1:
387          VCFResonanceCtrl.fvalue = itEvent->Param.CC.Value;                  ctrl = 12;
388      }                  break;
389                case ::gig::vcf_cutoff_ctrl_effect2:
390      /**                  ctrl = 13;
391       *  Synthesizes the current audio fragment for this voice.                  break;
392       *              case ::gig::vcf_cutoff_ctrl_breath:
393       *  @param Samples - number of sample points to be rendered in this audio                  ctrl = 2;
394       *                   fragment cycle                  break;
395       *  @param pSrc    - pointer to input sample data              case ::gig::vcf_cutoff_ctrl_foot:
396       *  @param Skip    - number of sample points to skip in output buffer                  ctrl = 4;
397       */                  break;
398      void Voice::Synthesize(uint Samples, sample_t* pSrc, uint Skip) {              case ::gig::vcf_cutoff_ctrl_sustainpedal:
399          finalSynthesisParameters.pOutLeft  = &pEngineChannel->pChannelLeft->Buffer()[Skip];                  ctrl = 64;
400          finalSynthesisParameters.pOutRight = &pEngineChannel->pChannelRight->Buffer()[Skip];                  break;
401          finalSynthesisParameters.pSrc      = pSrc;              case ::gig::vcf_cutoff_ctrl_softpedal:
402                    ctrl = 67;
403          RTList<Event>::Iterator itCCEvent = pEngineChannel->pEvents->first();                  break;
404          RTList<Event>::Iterator itNoteEvent = pEngineChannel->pMIDIKeyInfo[MIDIKey].pEvents->first();              case ::gig::vcf_cutoff_ctrl_genpurpose7:
405                    ctrl = 82;
406          if (Skip) { // skip events that happened before this voice was triggered                  break;
407              while (itCCEvent && itCCEvent->FragmentPos() <= Skip) ++itCCEvent;              case ::gig::vcf_cutoff_ctrl_genpurpose8:
408              while (itNoteEvent && itNoteEvent->FragmentPos() <= Skip) ++itNoteEvent;                  ctrl = 83;
409          }                  break;
410                case ::gig::vcf_cutoff_ctrl_aftertouch:
411          uint killPos;                  ctrl = 128;
412          if (itKillEvent) killPos = RTMath::Min(itKillEvent->FragmentPos(), pEngine->MaxFadeOutPos);                  break;
413                case ::gig::vcf_cutoff_ctrl_none:
414          uint i = Skip;              default:
415          while (i < Samples) {                  ctrl = 0;
416              int iSubFragmentEnd = RTMath::Min(i + CONFIG_DEFAULT_SUBFRAGMENT_SIZE, Samples);                  break;
417            }
             // initialize all final synthesis parameters  
             finalSynthesisParameters.fFinalPitch = PitchBase * PitchBend;  
             fFinalCutoff    = VCFCutoffCtrl.fvalue;  
             fFinalResonance = VCFResonanceCtrl.fvalue;  
   
             // process MIDI control change and pitchbend events for this subfragment  
             processCCEvents(itCCEvent, iSubFragmentEnd);  
   
             float fFinalVolume = VolumeSmoother.render() * CrossfadeSmoother.render();  
 #ifdef CONFIG_PROCESS_MUTED_CHANNELS  
             if (pEngineChannel->GetMute()) fFinalVolume = 0;  
 #endif  
   
             // process transition events (note on, note off & sustain pedal)  
             processTransitionEvents(itNoteEvent, iSubFragmentEnd);  
   
             // if the voice was killed in this subfragment, or if the  
             // filter EG is finished, switch EG1 to fade out stage  
             if ((itKillEvent && killPos <= iSubFragmentEnd) ||  
                 (SYNTHESIS_MODE_GET_FILTER(SynthesisMode) &&  
                  EG2.getSegmentType() == EGADSR::segment_end)) {  
                 EG1.enterFadeOutStage();  
                 itKillEvent = Pool<Event>::Iterator();  
             }  
   
             // 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 *= EG3.render();  
   
             // process low frequency oscillators  
             if (bLFO1Enabled) fFinalVolume *= (1.0f - pLFO1->render());  
             if (bLFO2Enabled) fFinalCutoff *= pLFO2->render();  
             if (bLFO3Enabled) finalSynthesisParameters.fFinalPitch *= RTMath::CentsToFreqRatio(pLFO3->render());  
   
             // if filter enabled then update filter coefficients  
             if (SYNTHESIS_MODE_GET_FILTER(SynthesisMode)) {  
                 finalSynthesisParameters.filterLeft.SetParameters(fFinalCutoff, fFinalResonance, pEngine->SampleRate);  
                 finalSynthesisParameters.filterRight.SetParameters(fFinalCutoff, fFinalResonance, pEngine->SampleRate);  
             }  
   
             // do we need resampling?  
             const float __PLUS_ONE_CENT  = 1.000577789506554859250142541782224725466f;  
             const float __MINUS_ONE_CENT = 0.9994225441413807496009516495583113737666f;  
             const bool bResamplingRequired = !(finalSynthesisParameters.fFinalPitch <= __PLUS_ONE_CENT &&  
                                                finalSynthesisParameters.fFinalPitch >= __MINUS_ONE_CENT);  
             SYNTHESIS_MODE_SET_INTERPOLATE(SynthesisMode, bResamplingRequired);  
   
             // prepare final synthesis parameters structure  
             finalSynthesisParameters.uiToGo            = iSubFragmentEnd - i;  
 #ifdef CONFIG_INTERPOLATE_VOLUME  
             finalSynthesisParameters.fFinalVolumeDeltaLeft  =  
                 (fFinalVolume * VolumeLeft  * PanLeftSmoother.render() -  
                  finalSynthesisParameters.fFinalVolumeLeft) / finalSynthesisParameters.uiToGo;  
             finalSynthesisParameters.fFinalVolumeDeltaRight =  
                 (fFinalVolume * VolumeRight * PanRightSmoother.render() -  
                  finalSynthesisParameters.fFinalVolumeRight) / finalSynthesisParameters.uiToGo;  
 #else  
             finalSynthesisParameters.fFinalVolumeLeft  =  
                 fFinalVolume * VolumeLeft  * PanLeftSmoother.render();  
             finalSynthesisParameters.fFinalVolumeRight =  
                 fFinalVolume * VolumeRight * PanRightSmoother.render();  
 #endif  
             // render audio for one subfragment  
             RunSynthesisFunction(SynthesisMode, &finalSynthesisParameters, &loop);  
   
             // stop the rendering if volume EG is finished  
             if (EG1.getSegmentType() == EGADSR::segment_end) break;  
   
             const double newPos = Pos + (iSubFragmentEnd - i) * finalSynthesisParameters.fFinalPitch;  
   
             // increment envelopes' positions  
             if (EG1.active()) {  
   
                 // if sample has a loop and loop start has been reached in this subfragment, send a special event to EG1 to let it finish the attack hold stage  
                 if (pDimRgn->SampleLoops && Pos <= pDimRgn->pSampleLoops[0].LoopStart && pDimRgn->pSampleLoops[0].LoopStart < newPos) {  
                     EG1.update(EGADSR::event_hold_end, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
                 }  
418    
419                  EG1.increment(1);          return ctrl;
420                  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  
421    
422              Pos = newPos;      uint8_t Voice::GetVCFResonanceCtrl() {
423              i = iSubFragmentEnd;          uint8_t ctrl;
424            switch (pRegion->VCFResonanceController) {
425                case ::gig::vcf_res_ctrl_genpurpose3:
426                    ctrl = 18;
427                    break;
428                case ::gig::vcf_res_ctrl_genpurpose4:
429                    ctrl = 19;
430                    break;
431                case ::gig::vcf_res_ctrl_genpurpose5:
432                    ctrl = 80;
433                    break;
434                case ::gig::vcf_res_ctrl_genpurpose6:
435                    ctrl = 81;
436                    break;
437                case ::gig::vcf_res_ctrl_none:
438                default:
439                    ctrl = 0;
440          }          }
441    
442            return ctrl;
443      }      }
444    
445      /** @brief Update current portamento position.      void Voice::TriggerEG1(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
446       *          EG1.trigger(pRegion->EG1PreAttack,
447       * Will be called when portamento mode is enabled to get the final                      pRegion->EG1Attack * egInfo.Attack,
448       * portamento position of this active voice from where the next voice(s)                      pRegion->EG1Hold,
449       * might continue to slide on.                      pRegion->EG1Decay1 * egInfo.Decay * velrelease,
450       *                      pRegion->EG1Decay2 * egInfo.Decay * velrelease,
451       * @param itNoteOffEvent - event which causes this voice to die soon                      pRegion->EG1InfiniteSustain,
452       */                      pRegion->EG1Sustain,
453      void Voice::UpdatePortamentoPos(Pool<Event>::Iterator& itNoteOffEvent) {                      pRegion->EG1Release * egInfo.Release * velrelease,
454          const float fFinalEG3Level = EG3.level(itNoteOffEvent->FragmentPos());                      velocityAttenuation,
455          pEngineChannel->PortamentoPos = (float) MIDIKey + RTMath::FreqRatioToCents(fFinalEG3Level) * 0.01f;                      sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
456      }      }
457    
458      /**      void Voice::TriggerEG2(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
459       *  Immediately kill the voice. This method should not be used to kill          EG2.trigger(uint(RgnInfo.EG2PreAttack),
460       *  a normal, active voice, because it doesn't take care of things like                      RgnInfo.EG2Attack * egInfo.Attack,
461       *  fading down the volume level to avoid clicks and regular processing                      false,
462       *  until the kill event actually occured!                      RgnInfo.EG2Decay1 * egInfo.Decay * velrelease,
463       *                      RgnInfo.EG2Decay2 * egInfo.Decay * velrelease,
464       *  @see Kill()                      RgnInfo.EG2InfiniteSustain,
465       */                      uint(RgnInfo.EG2Sustain),
466      void Voice::KillImmediately() {                      RgnInfo.EG2Release * egInfo.Release * velrelease,
467          if (DiskVoice && DiskStreamRef.State != Stream::state_unused) {                      velocityAttenuation,
468              pDiskThread->OrderDeletionOfStream(&DiskStreamRef);                      sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
469          }      }
470          Reset();  
471      }      void Voice::ProcessGroupEvent(RTList<Event>::Iterator& itEvent) {
472            dmsg(4,("Voice %x processGroupEvents event type=%d", this, itEvent->Type));
473      /**  
474       *  Kill the voice in regular sense. Let the voice render audio until          // TODO: The SustainPedal condition could be wrong, maybe the
475       *  the kill event actually occured and then fade down the volume level          // check should be if this Voice is in release stage or is a
476       *  very quickly and let the voice die finally. Unlike a normal release          // release sample instead. Need to test this in GSt.
477       *  of a voice, a kill process cannot be cancalled and is therefore          if (itEvent->Param.Note.Key != MIDIKey ||
478       *  usually used for voice stealing and key group conflicts.              !GetGigEngineChannel()->SustainPedal) {
479       *              dmsg(4,("Voice %x - kill", this));
      *  @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  
480    
481          if (itTriggerEvent && itKillEvent->FragmentPos() <= itTriggerEvent->FragmentPos()) return;              // kill the voice fast
482          this->itKillEvent = itKillEvent;              pEG1->enterFadeOutStage();
483            }
484      }      }
485    
486  }} // namespace LinuxSampler::gig  }} // namespace LinuxSampler::gig
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