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

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revision 877 by persson, Sun Jun 25 13:54:17 2006 UTC revision 2408 by persson, Sat Feb 2 08:22:49 2013 UTC
# Line 3  Line 3 
3   *   LinuxSampler - modular, streaming capable sampler                     *   *   LinuxSampler - modular, streaming capable sampler                     *
4   *                                                                         *   *                                                                         *
5   *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *   *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *
6   *   Copyright (C) 2005, 2006 Christian Schoenebeck                        *   *   Copyright (C) 2005 - 2008 Christian Schoenebeck                       *
7     *   Copyright (C) 2009 - 2013 Christian Schoenebeck and Grigor Iliev      *
8   *                                                                         *   *                                                                         *
9   *   This program is free software; you can redistribute it and/or modify  *   *   This program is free software; you can redistribute it and/or modify  *
10   *   it under the terms of the GNU General Public License as published by  *   *   it under the terms of the GNU General Public License as published by  *
# Line 24  Line 25 
25  #include "../../common/Features.h"  #include "../../common/Features.h"
26  #include "Synthesizer.h"  #include "Synthesizer.h"
27  #include "Profiler.h"  #include "Profiler.h"
28    #include "Engine.h"
29    #include "EngineChannel.h"
30    
31  #include "Voice.h"  #include "Voice.h"
32    
33  namespace LinuxSampler { namespace gig {  namespace LinuxSampler { namespace gig {
34    
35      Voice::Voice() {      Voice::Voice() {
36          pEngine     = NULL;          pEngine = NULL;
37          pDiskThread = NULL;          pEG1 = &EG1;
38          PlaybackState = playback_state_end;          pEG2 = &EG2;
         pLFO1 = new LFOUnsigned(1.0f);  // amplitude EG (0..1 range)  
         pLFO2 = new LFOUnsigned(1.0f);  // filter EG (0..1 range)  
         pLFO3 = new LFOSigned(1200.0f); // pitch EG (-1200..+1200 range)  
         KeyGroup = 0;  
         SynthesisMode = 0; // set all mode bits to 0 first  
         // select synthesis implementation (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          float volume = velocityAttenuation / 32768.0f; // we downscale by 32768 to convert from int16 value range to DSP value range (which is -1.0..1.0)          ri.VCFResonance  = pRegion->VCFResonance;
92    
93          volume *= pDimRgn->SampleAttenuation;          ri.ReleaseTriggerDecay = 0.01053 * (256 >> pRegion->ReleaseTriggerDecay);
94    
95          // the volume of release triggered samples depends on note length          return ri;
96          if (Type == type_release_trigger) {      }
97              float noteLength = float(pEngine->FrameTime + Delay -  
98                                       pEngineChannel->pMIDIKeyInfo[MIDIKey].NoteOnTime) / pEngine->SampleRate;      Voice::InstrumentInfo Voice::GetInstrumentInfo() {
99              float attenuation = 1 - 0.01053 * (256 >> pDimRgn->ReleaseTriggerDecay) * noteLength;          InstrumentInfo ii;
100              if (attenuation <= 0) return -1;          ii.FineTune = GetGigEngineChannel()->pInstrument->FineTune;
101              volume *= attenuation;          ii.PitchbendRange = GetGigEngineChannel()->pInstrument->PitchbendRange;
102    
103            return ii;
104        }
105    
106        double Voice::GetSampleAttenuation() {
107            return pRegion->SampleAttenuation;
108        }
109    
110        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          // select channel mode (mono or stereo)          VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of fFinalCutoff next time
137          SYNTHESIS_MODE_SET_CHANNELS(SynthesisMode, pSample->Channels == 2);          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 = 1.0f; //TODO: aftertouch not supported yet                  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, 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 = 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;  
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 * crossfadeVolume * EG1.getLevel();  
   
             finalSynthesisParameters.fFinalVolumeLeft  = finalVolume * VolumeLeft  * pEngineChannel->GlobalPanLeft;  
             finalSynthesisParameters.fFinalVolumeRight = finalVolume * VolumeRight * pEngineChannel->GlobalPanRight;  
         }  
 #endif  
 #endif  
   
         // setup EG 2 (VCF Cutoff EG)  
         {  
             // get current value of EG2 controller  
             double eg2controllervalue;  
             switch (pDimRgn->EG2Controller.type) {  
                 case ::gig::eg2_ctrl_t::type_none: // no controller defined  
                     eg2controllervalue = 0;  
                     break;  
                 case ::gig::eg2_ctrl_t::type_channelaftertouch:  
                     eg2controllervalue = 0; // TODO: aftertouch not yet supported  
                     break;  
                 case ::gig::eg2_ctrl_t::type_velocity:  
                     eg2controllervalue = itNoteOnEvent->Param.Note.Velocity;  
                     break;  
                 case ::gig::eg2_ctrl_t::type_controlchange: // MIDI control change controller  
                     eg2controllervalue = pEngineChannel->ControllerTable[pDimRgn->EG2Controller.controller_number];  
                     break;  
             }  
             if (pDimRgn->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue;  
180    
181              // calculate influence of EG2 controller on EG2's parameters      Voice::EGInfo Voice::CalculateEG1ControllerInfluence(double eg1ControllerValue) {
182              double eg2attack  = (pDimRgn->EG2ControllerAttackInfluence)  ? 1 + 0.00775 * (double) (1 << pDimRgn->EG2ControllerAttackInfluence)  * eg2controllervalue : 1.0;          EGInfo eg;
183              double eg2decay   = (pDimRgn->EG2ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pDimRgn->EG2ControllerDecayInfluence)   * eg2controllervalue : 1.0;          // (eg1attack is different from the others)
184              double eg2release = (pDimRgn->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pDimRgn->EG2ControllerReleaseInfluence) * eg2controllervalue : 1.0;          if (pRegion->EG1Attack < 1e-8 && // attack in gig == 0
185                (pRegion->EG1ControllerAttackInfluence == 0 ||
186              EG2.trigger(pDimRgn->EG2PreAttack,               eg1ControllerValue <= 10)) { // strange GSt special case
187                          pDimRgn->EG2Attack * eg2attack,              eg.Attack = 0; // this will force the attack to be 0 in the call to EG1.trigger
188                          false,          } else {
189                          pDimRgn->EG2Decay1 * eg2decay * velrelease,              eg.Attack  = (pRegion->EG1ControllerAttackInfluence)  ?
190                          pDimRgn->EG2Decay2 * eg2decay * velrelease,                  1 + 0.031 * (double) (pRegion->EG1ControllerAttackInfluence == 1 ?
191                          pDimRgn->EG2InfiniteSustain,                                        1 : 1 << pRegion->EG1ControllerAttackInfluence) * eg1ControllerValue : 1.0;
192                          pDimRgn->EG2Sustain,          }
193                          pDimRgn->EG2Release * eg2release * velrelease,          eg.Decay   = (pRegion->EG1ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerDecayInfluence)   * eg1ControllerValue : 1.0;
194                          velocityAttenuation,          eg.Release = (pRegion->EG1ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerReleaseInfluence) * eg1ControllerValue : 1.0;
195                          pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
196          }          return eg;
197        }
198    
199          // setup EG 3 (VCO EG)      double Voice::GetEG2ControllerValue(uint8_t MIDIKeyVelocity) {
200          {          double eg2controllervalue = 0;
201              // if portamento mode is on, we dedicate EG3 purely for portamento, otherwise if portamento is off we do as told by the patch          switch (pRegion->EG2Controller.type) {
202              bool  bPortamento = pEngineChannel->PortamentoMode && pEngineChannel->PortamentoPos >= 0.0f;              case ::gig::eg2_ctrl_t::type_none: // no controller defined
203              float eg3depth = (bPortamento)                  eg2controllervalue = 0;
204                                   ? RTMath::CentsToFreqRatio((pEngineChannel->PortamentoPos - (float) MIDIKey) * 100)                  break;
205                                   : RTMath::CentsToFreqRatio(pDimRgn->EG3Depth);              case ::gig::eg2_ctrl_t::type_channelaftertouch:
206              float eg3time = (bPortamento)                  eg2controllervalue = GetGigEngineChannel()->ControllerTable[128];
207                                  ? pEngineChannel->PortamentoTime                  break;
208                                  : pDimRgn->EG3Attack;              case ::gig::eg2_ctrl_t::type_velocity:
209              EG3.trigger(eg3depth, eg3time, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);                  eg2controllervalue = MIDIKeyVelocity;
210              dmsg(5,("PortamentoPos=%f, depth=%f, time=%f\n", pEngineChannel->PortamentoPos, eg3depth, eg3time));                  break;
211          }              case ::gig::eg2_ctrl_t::type_controlchange: // MIDI control change controller
212                    eg2controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG2Controller.controller_number];
213                    break;
         // setup LFO 1 (VCA LFO)  
         {  
             uint16_t lfo1_internal_depth;  
             switch (pDimRgn->LFO1Controller) {  
                 case ::gig::lfo1_ctrl_internal:  
                     lfo1_internal_depth  = pDimRgn->LFO1InternalDepth;  
                     pLFO1->ExtController = 0; // no external controller  
                     bLFO1Enabled         = (lfo1_internal_depth > 0);  
                     break;  
                 case ::gig::lfo1_ctrl_modwheel:  
                     lfo1_internal_depth  = 0;  
                     pLFO1->ExtController = 1; // MIDI controller 1  
                     bLFO1Enabled         = (pDimRgn->LFO1ControlDepth > 0);  
                     break;  
                 case ::gig::lfo1_ctrl_breath:  
                     lfo1_internal_depth  = 0;  
                     pLFO1->ExtController = 2; // MIDI controller 2  
                     bLFO1Enabled         = (pDimRgn->LFO1ControlDepth > 0);  
                     break;  
                 case ::gig::lfo1_ctrl_internal_modwheel:  
                     lfo1_internal_depth  = pDimRgn->LFO1InternalDepth;  
                     pLFO1->ExtController = 1; // MIDI controller 1  
                     bLFO1Enabled         = (lfo1_internal_depth > 0 || pDimRgn->LFO1ControlDepth > 0);  
                     break;  
                 case ::gig::lfo1_ctrl_internal_breath:  
                     lfo1_internal_depth  = pDimRgn->LFO1InternalDepth;  
                     pLFO1->ExtController = 2; // MIDI controller 2  
                     bLFO1Enabled         = (lfo1_internal_depth > 0 || pDimRgn->LFO1ControlDepth > 0);  
                     break;  
                 default:  
                     lfo1_internal_depth  = 0;  
                     pLFO1->ExtController = 0; // no external controller  
                     bLFO1Enabled         = false;  
             }  
             if (bLFO1Enabled) {  
                 pLFO1->trigger(pDimRgn->LFO1Frequency,  
                                start_level_max,  
                                lfo1_internal_depth,  
                                pDimRgn->LFO1ControlDepth,  
                                pDimRgn->LFO1FlipPhase,  
                                pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
                 pLFO1->update(pLFO1->ExtController ? pEngineChannel->ControllerTable[pLFO1->ExtController] : 0);  
             }  
214          }          }
215            if (pRegion->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue;
216    
217            return eg2controllervalue;
218        }
219    
220          // setup LFO 2 (VCF Cutoff LFO)      Voice::EGInfo Voice::CalculateEG2ControllerInfluence(double eg2ControllerValue) {
221          {          EGInfo eg;
222              uint16_t lfo2_internal_depth;          eg.Attack  = (pRegion->EG2ControllerAttackInfluence)  ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerAttackInfluence)  * eg2ControllerValue : 1.0;
223              switch (pDimRgn->LFO2Controller) {          eg.Decay   = (pRegion->EG2ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerDecayInfluence)   * eg2ControllerValue : 1.0;
224                  case ::gig::lfo2_ctrl_internal:          eg.Release = (pRegion->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerReleaseInfluence) * eg2ControllerValue : 1.0;
                     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);  
             }  
         }  
225    
226            return eg;
227        }
228    
229          // setup LFO 3 (VCO LFO)      void Voice::InitLFO1() {
230          {          uint16_t lfo1_internal_depth;
231              uint16_t lfo3_internal_depth;          switch (pRegion->LFO1Controller) {
232              switch (pDimRgn->LFO3Controller) {              case ::gig::lfo1_ctrl_internal:
233                  case ::gig::lfo3_ctrl_internal:                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
234                      lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;                  pLFO1->ExtController = 0; // no external controller
235                      pLFO3->ExtController = 0; // no external controller                  bLFO1Enabled         = (lfo1_internal_depth > 0);
236                      bLFO3Enabled         = (lfo3_internal_depth > 0);                  break;
237                      break;              case ::gig::lfo1_ctrl_modwheel:
238                  case ::gig::lfo3_ctrl_modwheel:                  lfo1_internal_depth  = 0;
239                      lfo3_internal_depth  = 0;                  pLFO1->ExtController = 1; // MIDI controller 1
240                      pLFO3->ExtController = 1; // MIDI controller 1                  bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
241                      bLFO3Enabled         = (pDimRgn->LFO3ControlDepth > 0);                  break;
242                      break;              case ::gig::lfo1_ctrl_breath:
243                  case ::gig::lfo3_ctrl_aftertouch:                  lfo1_internal_depth  = 0;
244                      lfo3_internal_depth  = 0;                  pLFO1->ExtController = 2; // MIDI controller 2
245                      pLFO3->ExtController = 0; // TODO: aftertouch not implemented yet                  bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
246                      bLFO3Enabled         = false; // see TODO comment in line above                  break;
247                      break;              case ::gig::lfo1_ctrl_internal_modwheel:
248                  case ::gig::lfo3_ctrl_internal_modwheel:                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
249                      lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;                  pLFO1->ExtController = 1; // MIDI controller 1
250                      pLFO3->ExtController = 1; // MIDI controller 1                  bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
251                      bLFO3Enabled         = (lfo3_internal_depth > 0 || pDimRgn->LFO3ControlDepth > 0);                  break;
252                      break;              case ::gig::lfo1_ctrl_internal_breath:
253                  case ::gig::lfo3_ctrl_internal_aftertouch:                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
254                      lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;                  pLFO1->ExtController = 2; // MIDI controller 2
255                      pLFO1->ExtController = 0; // TODO: aftertouch not implemented yet                  bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
256                      bLFO3Enabled         = (lfo3_internal_depth > 0 /*|| pDimRgn->LFO3ControlDepth > 0*/); // see TODO comment in line above                  break;
257                      break;              default:
258                  default:                  lfo1_internal_depth  = 0;
259                      lfo3_internal_depth  = 0;                  pLFO1->ExtController = 0; // no external controller
260                      pLFO3->ExtController = 0; // no external controller                  bLFO1Enabled         = false;
261                      bLFO3Enabled         = false;          }
262              }          if (bLFO1Enabled) {
263              if (bLFO3Enabled) {              pLFO1->trigger(pRegion->LFO1Frequency,
264                  pLFO3->trigger(pDimRgn->LFO3Frequency,                             start_level_min,
265                                 start_level_mid,                             lfo1_internal_depth,
266                                 lfo3_internal_depth,                             pRegion->LFO1ControlDepth,
267                                 pDimRgn->LFO3ControlDepth,                             pRegion->LFO1FlipPhase,
268                                 false,                             pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
269                                 pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);              pLFO1->update(pLFO1->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO1->ExtController] : 0);
                 pLFO3->update(pLFO3->ExtController ? pEngineChannel->ControllerTable[pLFO3->ExtController] : 0);  
             }  
270          }          }
271        }
272    
273        void Voice::InitLFO2() {
274          #if CONFIG_FORCE_FILTER          uint16_t lfo2_internal_depth;
275          const bool bUseFilter = true;          switch (pRegion->LFO2Controller) {
276          #else // use filter only if instrument file told so              case ::gig::lfo2_ctrl_internal:
277          const bool bUseFilter = pDimRgn->VCFEnabled;                  lfo2_internal_depth  = pRegion->LFO2InternalDepth;
278          #endif // CONFIG_FORCE_FILTER                  pLFO2->ExtController = 0; // no external controller
279          SYNTHESIS_MODE_SET_FILTER(SynthesisMode, bUseFilter);                  bLFO2Enabled         = (lfo2_internal_depth > 0);
280          if (bUseFilter) {                  break;
281              #ifdef CONFIG_OVERRIDE_CUTOFF_CTRL              case ::gig::lfo2_ctrl_modwheel:
282              VCFCutoffCtrl.controller = CONFIG_OVERRIDE_CUTOFF_CTRL;                  lfo2_internal_depth  = 0;
283              #else // use the one defined in the instrument file                  pLFO2->ExtController = 1; // MIDI controller 1
284              switch (pDimRgn->VCFCutoffController) {                  bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
285                  case ::gig::vcf_cutoff_ctrl_modwheel:                  break;
286                      VCFCutoffCtrl.controller = 1;              case ::gig::lfo2_ctrl_foot:
287                      break;                  lfo2_internal_depth  = 0;
288                  case ::gig::vcf_cutoff_ctrl_effect1:                  pLFO2->ExtController = 4; // MIDI controller 4
289                      VCFCutoffCtrl.controller = 12;                  bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
290                      break;                  break;
291                  case ::gig::vcf_cutoff_ctrl_effect2:              case ::gig::lfo2_ctrl_internal_modwheel:
292                      VCFCutoffCtrl.controller = 13;                  lfo2_internal_depth  = pRegion->LFO2InternalDepth;
293                      break;                  pLFO2->ExtController = 1; // MIDI controller 1
294                  case ::gig::vcf_cutoff_ctrl_breath:                  bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
295                      VCFCutoffCtrl.controller = 2;                  break;
296                      break;              case ::gig::lfo2_ctrl_internal_foot:
297                  case ::gig::vcf_cutoff_ctrl_foot:                  lfo2_internal_depth  = pRegion->LFO2InternalDepth;
298                      VCFCutoffCtrl.controller = 4;                  pLFO2->ExtController = 4; // MIDI controller 4
299                      break;                  bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
300                  case ::gig::vcf_cutoff_ctrl_sustainpedal:                  break;
301                      VCFCutoffCtrl.controller = 64;              default:
302                      break;                  lfo2_internal_depth  = 0;
303                  case ::gig::vcf_cutoff_ctrl_softpedal:                  pLFO2->ExtController = 0; // no external controller
304                      VCFCutoffCtrl.controller = 67;                  bLFO2Enabled         = false;
305                      break;          }
306                  case ::gig::vcf_cutoff_ctrl_genpurpose7:          if (bLFO2Enabled) {
307                      VCFCutoffCtrl.controller = 82;              pLFO2->trigger(pRegion->LFO2Frequency,
308                      break;                             start_level_max,
309                  case ::gig::vcf_cutoff_ctrl_genpurpose8:                             lfo2_internal_depth,
310                      VCFCutoffCtrl.controller = 83;                             pRegion->LFO2ControlDepth,
311                      break;                             pRegion->LFO2FlipPhase,
312                  case ::gig::vcf_cutoff_ctrl_aftertouch: //TODO: not implemented yet                             pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
313                  case ::gig::vcf_cutoff_ctrl_none:              pLFO2->update(pLFO2->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO2->ExtController] : 0);
                 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;  
314          }          }
   
         return 0; // success  
315      }      }
316    
317      /**      void Voice::InitLFO3() {
318       *  Renders the audio data for this voice for the current audio fragment.          uint16_t lfo3_internal_depth;
319       *  The sample input data can either come from RAM (cached sample or sample          switch (pRegion->LFO3Controller) {
320       *  part) or directly from disk. The output signal will be rendered by              case ::gig::lfo3_ctrl_internal:
321       *  resampling / interpolation. If this voice is a disk streaming voice and                  lfo3_internal_depth  = pRegion->LFO3InternalDepth;
322       *  the voice completely played back the cached RAM part of the sample, it                  pLFO3->ExtController = 0; // no external controller
323       *  will automatically switch to disk playback for the next RenderAudio()                  bLFO3Enabled         = (lfo3_internal_depth > 0);
324       *  call.                  break;
325       *              case ::gig::lfo3_ctrl_modwheel:
326       *  @param Samples - number of samples to be rendered in this audio fragment cycle                  lfo3_internal_depth  = 0;
327       */                  pLFO3->ExtController = 1; // MIDI controller 1
328      void Voice::Render(uint Samples) {                  bLFO3Enabled         = (pRegion->LFO3ControlDepth > 0);
329                    break;
330          // select default values for synthesis mode bits              case ::gig::lfo3_ctrl_aftertouch:
331          SYNTHESIS_MODE_SET_LOOP(SynthesisMode, false);                  lfo3_internal_depth  = 0;
332                    pLFO3->ExtController = 128;
333          switch (this->PlaybackState) {                  bLFO3Enabled         = true;
334                    break;
335              case playback_state_init:              case ::gig::lfo3_ctrl_internal_modwheel:
336                  this->PlaybackState = playback_state_ram; // we always start playback from RAM cache and switch then to disk if needed                  lfo3_internal_depth  = pRegion->LFO3InternalDepth;
337                  // no break - continue with playback_state_ram                  pLFO3->ExtController = 1; // MIDI controller 1
338                    bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
339              case playback_state_ram: {                  break;
340                      if (RAMLoop) SYNTHESIS_MODE_SET_LOOP(SynthesisMode, true); // enable looping              case ::gig::lfo3_ctrl_internal_aftertouch:
341                    lfo3_internal_depth  = pRegion->LFO3InternalDepth;
342                      // render current fragment                  pLFO3->ExtController = 128;
343                      Synthesize(Samples, (sample_t*) pSample->GetCache().pStart, Delay);                  bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
344                    break;
345                      if (DiskVoice) {              default:
346                          // check if we reached the allowed limit of the sample RAM cache                  lfo3_internal_depth  = 0;
347                          if (finalSynthesisParameters.dPos > MaxRAMPos) {                  pLFO3->ExtController = 0; // no external controller
348                              dmsg(5,("Voice: switching to disk playback (Pos=%f)\n", finalSynthesisParameters.dPos));                  bLFO3Enabled         = false;
349                              this->PlaybackState = playback_state_disk;          }
350                          }          if (bLFO3Enabled) {
351                      } else if (finalSynthesisParameters.dPos >= pSample->GetCache().Size / pSample->FrameSize) {              pLFO3->trigger(pRegion->LFO3Frequency,
352                          this->PlaybackState = playback_state_end;                             start_level_mid,
353                      }                             lfo3_internal_depth,
354                  }                             pRegion->LFO3ControlDepth,
355                  break;                             false,
356                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
357              case playback_state_disk: {              pLFO3->update(pLFO3->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO3->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, 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);  
             }  
358          }          }
359      }      }
360    
361      /**      float Voice::CalculateCutoffBase(uint8_t MIDIKeyVelocity) {
362       * Process given list of MIDI control change and pitch bend events for          float cutoff = pRegion->GetVelocityCutoff(MIDIKeyVelocity);
363       * the given time.          if (pRegion->VCFKeyboardTracking) {
364       *              cutoff *= RTMath::CentsToFreqRatioUnlimited((MIDIKey - pRegion->VCFKeyboardTrackingBreakpoint) * 100);
365       * @param itEvent - iterator pointing to the next event to be processed          }
366       * @param End     - youngest time stamp where processing should be stopped          return cutoff;
367       */      }
368      void Voice::processCCEvents(RTList<Event>::Iterator& itEvent, uint End) {  
369          for (; itEvent && itEvent->FragmentPos() <= End; ++itEvent) {      float Voice::CalculateFinalCutoff(float cutoffBase) {
370              if (itEvent->Type == Event::type_control_change &&          int cvalue;
371                  itEvent->Param.CC.Controller) { // if (valid) MIDI control change event          if (VCFCutoffCtrl.controller) {
372                  if (itEvent->Param.CC.Controller == VCFCutoffCtrl.controller) {              cvalue = GetGigEngineChannel()->ControllerTable[VCFCutoffCtrl.controller];
373                      processCutoffEvent(itEvent);              if (pRegion->VCFCutoffControllerInvert) cvalue = 127 - cvalue;
374                  }              // VCFVelocityScale in this case means Minimum cutoff
375                  if (itEvent->Param.CC.Controller == VCFResonanceCtrl.controller) {              if (cvalue < pRegion->VCFVelocityScale) cvalue = pRegion->VCFVelocityScale;
                     processResonanceEvent(itEvent);  
                 }  
                 if (itEvent->Param.CC.Controller == pLFO1->ExtController) {  
                     pLFO1->update(itEvent->Param.CC.Value);  
                 }  
                 if (itEvent->Param.CC.Controller == pLFO2->ExtController) {  
                     pLFO2->update(itEvent->Param.CC.Value);  
                 }  
                 if (itEvent->Param.CC.Controller == pLFO3->ExtController) {  
                     pLFO3->update(itEvent->Param.CC.Value);  
                 }  
                 if (pDimRgn->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&  
                     itEvent->Param.CC.Controller == pDimRgn->AttenuationController.controller_number) {  
                     CrossfadeSmoother.update(Engine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.CC.Value)]);  
                 }  
                 if (itEvent->Param.CC.Controller == 7) { // volume  
                     VolumeSmoother.update(Engine::VolumeCurve[itEvent->Param.CC.Value] * CONFIG_GLOBAL_ATTENUATION);  
                 } else if (itEvent->Param.CC.Controller == 10) { // panpot  
                     PanLeftSmoother.update(Engine::PanCurve[128 - itEvent->Param.CC.Value]);  
                     PanRightSmoother.update(Engine::PanCurve[itEvent->Param.CC.Value]);  
                 }  
             } else if (itEvent->Type == Event::type_pitchbend) { // if pitch bend event  
                 processPitchEvent(itEvent);  
             }  
376          }          }
377      }          else {
378                cvalue = pRegion->VCFCutoff;
379            }
380            float fco = cutoffBase * float(cvalue);
381            if (fco > 127.0f) fco = 127.0f;
382    
383      void Voice::processPitchEvent(RTList<Event>::Iterator& itEvent) {          return fco;
         const float pitch = RTMath::CentsToFreqRatio(((double) itEvent->Param.Pitch.Pitch / 8192.0) * 200.0); // +-two semitones = +-200 cents  
         finalSynthesisParameters.fFinalPitch *= pitch;  
         PitchBend = pitch;  
384      }      }
385    
386      void Voice::processCutoffEvent(RTList<Event>::Iterator& itEvent) {      uint8_t Voice::GetVCFCutoffCtrl() {
387          int ccvalue = itEvent->Param.CC.Value;          uint8_t ctrl;
388          if (VCFCutoffCtrl.value == ccvalue) return;          switch (pRegion->VCFCutoffController) {
389          VCFCutoffCtrl.value == ccvalue;              case ::gig::vcf_cutoff_ctrl_modwheel:
390          if (pDimRgn->VCFCutoffControllerInvert)  ccvalue = 127 - ccvalue;                  ctrl = 1;
391          if (ccvalue < pDimRgn->VCFVelocityScale) ccvalue = pDimRgn->VCFVelocityScale;                  break;
392          float cutoff = CutoffBase * float(ccvalue);              case ::gig::vcf_cutoff_ctrl_effect1:
393          if (cutoff > 127.0f) cutoff = 127.0f;                  ctrl = 12;
394                    break;
395                case ::gig::vcf_cutoff_ctrl_effect2:
396                    ctrl = 13;
397                    break;
398                case ::gig::vcf_cutoff_ctrl_breath:
399                    ctrl = 2;
400                    break;
401                case ::gig::vcf_cutoff_ctrl_foot:
402                    ctrl = 4;
403                    break;
404                case ::gig::vcf_cutoff_ctrl_sustainpedal:
405                    ctrl = 64;
406                    break;
407                case ::gig::vcf_cutoff_ctrl_softpedal:
408                    ctrl = 67;
409                    break;
410                case ::gig::vcf_cutoff_ctrl_genpurpose7:
411                    ctrl = 82;
412                    break;
413                case ::gig::vcf_cutoff_ctrl_genpurpose8:
414                    ctrl = 83;
415                    break;
416                case ::gig::vcf_cutoff_ctrl_aftertouch:
417                    ctrl = 128;
418                    break;
419                case ::gig::vcf_cutoff_ctrl_none:
420                default:
421                    ctrl = 0;
422                    break;
423            }
424    
425          VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of fFinalCutoff next time          return ctrl;
         fFinalCutoff = cutoff;  
426      }      }
427    
428      void Voice::processResonanceEvent(RTList<Event>::Iterator& itEvent) {      uint8_t Voice::GetVCFResonanceCtrl() {
429          // convert absolute controller value to differential          uint8_t ctrl;
430          const int ctrldelta = itEvent->Param.CC.Value - VCFResonanceCtrl.value;          switch (pRegion->VCFResonanceController) {
431          VCFResonanceCtrl.value = itEvent->Param.CC.Value;              case ::gig::vcf_res_ctrl_genpurpose3:
432          const float resonancedelta = (float) ctrldelta;                  ctrl = 18;
433          fFinalResonance += resonancedelta;                  break;
434          // needed for initialization of parameter              case ::gig::vcf_res_ctrl_genpurpose4:
435          VCFResonanceCtrl.fvalue = itEvent->Param.CC.Value;                  ctrl = 19;
436      }                  break;
437                case ::gig::vcf_res_ctrl_genpurpose5:
438      /**                  ctrl = 80;
439       *  Synthesizes the current audio fragment for this voice.                  break;
440       *              case ::gig::vcf_res_ctrl_genpurpose6:
441       *  @param Samples - number of sample points to be rendered in this audio                  ctrl = 81;
442       *                   fragment cycle                  break;
443       *  @param pSrc    - pointer to input sample data              case ::gig::vcf_res_ctrl_none:
444       *  @param Skip    - number of sample points to skip in output buffer              default:
445       */                  ctrl = 0;
     void Voice::Synthesize(uint Samples, sample_t* pSrc, uint Skip) {  
         finalSynthesisParameters.pOutLeft  = &pEngineChannel->pOutputLeft[Skip];  
         finalSynthesisParameters.pOutRight = &pEngineChannel->pOutputRight[Skip];  
         finalSynthesisParameters.pSrc      = pSrc;  
   
         RTList<Event>::Iterator itCCEvent = pEngineChannel->pEvents->first();  
         RTList<Event>::Iterator itNoteEvent = pEngineChannel->pMIDIKeyInfo[MIDIKey].pEvents->first();  
   
         if (Skip) { // skip events that happened before this voice was triggered  
             while (itCCEvent && itCCEvent->FragmentPos() <= Skip) ++itCCEvent;  
             while (itNoteEvent && itNoteEvent->FragmentPos() <= Skip) ++itNoteEvent;  
         }  
   
         uint killPos;  
         if (itKillEvent) killPos = RTMath::Min(itKillEvent->FragmentPos(), pEngine->MaxFadeOutPos);  
   
         uint i = Skip;  
         while (i < Samples) {  
             int iSubFragmentEnd = RTMath::Min(i + CONFIG_DEFAULT_SUBFRAGMENT_SIZE, Samples);  
   
             // initialize all final synthesis parameters  
             finalSynthesisParameters.fFinalPitch = PitchBase * PitchBend;  
             fFinalCutoff    = VCFCutoffCtrl.fvalue;  
             fFinalResonance = VCFResonanceCtrl.fvalue;  
   
             // process MIDI control change and pitchbend events for this subfragment  
             processCCEvents(itCCEvent, iSubFragmentEnd);  
   
             float fFinalVolume = VolumeSmoother.render() * CrossfadeSmoother.render();  
 #ifdef CONFIG_PROCESS_MUTED_CHANNELS  
             if (pEngineChannel->GetMute()) fFinalVolume = 0;  
 #endif  
   
             // process transition events (note on, note off & sustain pedal)  
             processTransitionEvents(itNoteEvent, iSubFragmentEnd);  
   
             // if the voice was killed in this subfragment switch EG1 to fade out stage  
             if (itKillEvent && killPos <= iSubFragmentEnd) {  
                 EG1.enterFadeOutStage();  
                 itKillEvent = Pool<Event>::Iterator();  
             }  
   
             // 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 *= 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);  
                 }  
   
                 EG1.increment(1);  
                 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  
   
             Pos = newPos;  
             i = iSubFragmentEnd;  
446          }          }
     }  
447    
448      /** @brief Update current portamento position.          return ctrl;
449       *      }
      * Will be called when portamento mode is enabled to get the final  
      * portamento position of this active voice from where the next voice(s)  
      * might continue to slide on.  
      *  
      * @param itNoteOffEvent - event which causes this voice to die soon  
      */  
     void Voice::UpdatePortamentoPos(Pool<Event>::Iterator& itNoteOffEvent) {  
         const float fFinalEG3Level = EG3.level(itNoteOffEvent->FragmentPos());  
         pEngineChannel->PortamentoPos = (float) MIDIKey + RTMath::FreqRatioToCents(fFinalEG3Level) * 0.01f;  
     }  
   
     /**  
      *  Immediately kill the voice. This method should not be used to kill  
      *  a normal, active voice, because it doesn't take care of things like  
      *  fading down the volume level to avoid clicks and regular processing  
      *  until the kill event actually occured!  
      *  
      *  @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  
450    
451          if (itTriggerEvent && itKillEvent->FragmentPos() <= itTriggerEvent->FragmentPos()) return;      void Voice::TriggerEG1(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
452          this->itKillEvent = itKillEvent;          EG1.trigger(pRegion->EG1PreAttack,
453                        RTMath::Max(pRegion->EG1Attack, 0.0316) * egInfo.Attack,
454                        pRegion->EG1Hold,
455                        pRegion->EG1Decay1 * egInfo.Decay * velrelease,
456                        pRegion->EG1Decay2 * egInfo.Decay * velrelease,
457                        pRegion->EG1InfiniteSustain,
458                        pRegion->EG1Sustain,
459                        RTMath::Max(pRegion->EG1Release * velrelease, 0.014) * egInfo.Release,
460                        velocityAttenuation,
461                        sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
462        }
463    
464        void Voice::TriggerEG2(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
465            EG2.trigger(uint(RgnInfo.EG2PreAttack),
466                        RgnInfo.EG2Attack * egInfo.Attack,
467                        false,
468                        RgnInfo.EG2Decay1 * egInfo.Decay * velrelease,
469                        RgnInfo.EG2Decay2 * egInfo.Decay * velrelease,
470                        RgnInfo.EG2InfiniteSustain,
471                        uint(RgnInfo.EG2Sustain),
472                        RgnInfo.EG2Release * egInfo.Release * velrelease,
473                        velocityAttenuation,
474                        sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
475        }
476    
477        void Voice::ProcessGroupEvent(RTList<Event>::Iterator& itEvent) {
478            dmsg(4,("Voice %x processGroupEvents event type=%d", this, itEvent->Type));
479    
480            // TODO: The SustainPedal condition could be wrong, maybe the
481            // check should be if this Voice is in release stage or is a
482            // release sample instead. Need to test this in GSt.
483            // -- Andreas
484            //
485            // Commented sustain pedal check out. I don't think voices of the same
486            // note should be stopped at all, because it doesn't sound naturally
487            // with a drumkit.
488            // -- Christian, 2013-01-08
489            if (itEvent->Param.Note.Key != MIDIKey /*||
490                !GetGigEngineChannel()->SustainPedal*/) {
491                dmsg(4,("Voice %x - kill", this));
492    
493                // kill the voice fast
494                pEG1->enterFadeOutStage();
495            }
496        }
497    
498        void Voice::CalculateFadeOutCoeff(float FadeOutTime, float SampleRate) {
499            EG1.CalculateFadeOutCoeff(FadeOutTime, SampleRate);
500        }
501    
502        int Voice::CalculatePan(uint8_t pan) {
503            int p;
504            // Gst behaviour: -64 and 63 are special cases
505            if (RgnInfo.Pan == -64)     p = pan * 2 - 127;
506            else if (RgnInfo.Pan == 63) p = pan * 2;
507            else                        p = pan + RgnInfo.Pan;
508    
509            if (p < 0) return 0;
510            if (p > 127) return 127;
511            return p;
512      }      }
513    
514  }} // namespace LinuxSampler::gig  }} // namespace LinuxSampler::gig
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