/[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 783 by persson, Sun Oct 2 14:40:52 2005 UTC revision 3328 by schoenebeck, Sun Jul 23 18:27:29 2017 UTC
# Line 3  Line 3 
3   *   LinuxSampler - modular, streaming capable sampler                     *   *   LinuxSampler - modular, streaming capable sampler                     *
4   *                                                                         *   *                                                                         *
5   *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *   *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *
6   *   Copyright (C) 2005 Christian Schoenebeck                              *   *   Copyright (C) 2005 - 2008 Christian Schoenebeck                       *
7     *   Copyright (C) 2009 Christian Schoenebeck and Grigor Iliev             *
8     *   Copyright (C) 2010 - 2017 Christian Schoenebeck and Andreas Persson   *
9   *                                                                         *   *                                                                         *
10   *   This program is free software; you can redistribute it and/or modify  *   *   This program is free software; you can redistribute it and/or modify  *
11   *   it under the terms of the GNU General Public License as published by  *   *   it under the terms of the GNU General Public License as published by  *
# Line 24  Line 26 
26  #include "../../common/Features.h"  #include "../../common/Features.h"
27  #include "Synthesizer.h"  #include "Synthesizer.h"
28  #include "Profiler.h"  #include "Profiler.h"
29    #include "Engine.h"
30    #include "EngineChannel.h"
31    
32  #include "Voice.h"  #include "Voice.h"
33    
34  namespace LinuxSampler { namespace gig {  namespace LinuxSampler { namespace gig {
35    
     const float Voice::FILTER_CUTOFF_COEFF(CalculateFilterCutoffCoeff());  
   
     float Voice::CalculateFilterCutoffCoeff() {  
         return log(CONFIG_FILTER_CUTOFF_MAX / CONFIG_FILTER_CUTOFF_MIN);  
     }  
   
36      Voice::Voice() {      Voice::Voice() {
37          pEngine     = NULL;          pEngine = NULL;
38          pDiskThread = NULL;          pEG1 = &EG1;
39          PlaybackState = playback_state_end;          pEG2 = &EG2;
         pLFO1 = new LFOUnsigned(1.0f);  // amplitude EG (0..1 range)  
         pLFO2 = new LFOUnsigned(1.0f);  // filter EG (0..1 range)  
         pLFO3 = new LFOSigned(1200.0f); // pitch EG (-1200..+1200 range)  
         KeyGroup = 0;  
         SynthesisMode = 0; // set all mode bits to 0 first  
         // select synthesis implementation (currently either pure C++ or MMX+SSE(1))  
         #if CONFIG_ASM && ARCH_X86  
         SYNTHESIS_MODE_SET_IMPLEMENTATION(SynthesisMode, Features::supportsMMX() && Features::supportsSSE());  
         #else  
         SYNTHESIS_MODE_SET_IMPLEMENTATION(SynthesisMode, false);  
         #endif  
         SYNTHESIS_MODE_SET_PROFILING(SynthesisMode, Profiler::isEnabled());  
   
         finalSynthesisParameters.filterLeft.Reset();  
         finalSynthesisParameters.filterRight.Reset();  
40      }      }
41    
42      Voice::~Voice() {      Voice::~Voice() {
         if (pLFO1) delete pLFO1;  
         if (pLFO2) delete pLFO2;  
         if (pLFO3) delete pLFO3;  
43      }      }
44    
45      void Voice::SetEngine(Engine* pEngine) {      EngineChannel* Voice::GetGigEngineChannel() {
46          this->pEngine     = pEngine;          return static_cast<EngineChannel*>(pEngineChannel);
         this->pDiskThread = pEngine->pDiskThread;  
         dmsg(6,("Voice::SetEngine()\n"));  
47      }      }
48    
49      /**      void Voice::SetEngine(LinuxSampler::Engine* pEngine) {
50       *  Initializes and triggers the voice, a disk stream will be launched if          Engine* engine = static_cast<Engine*>(pEngine);
51       *  needed.          this->pEngine     = engine;
52       *          this->pDiskThread = engine->pDiskThread;
53       *  @param pEngineChannel - engine channel on which this voice was ordered          dmsg(6,("Voice::SetEngine()\n"));
54       *  @param itNoteOnEvent  - event that caused triggering of this voice      }
      *  @param PitchBend      - MIDI detune factor (-8192 ... +8191)  
      *  @param pDimRgn        - points to the dimension region which provides sample wave(s) and articulation data  
      *  @param VoiceType      - type of this voice  
      *  @param iKeyGroup      - a value > 0 defines a key group in which this voice is member of  
      *  @returns 0 on success, a value < 0 if the voice wasn't triggered  
      *           (either due to an error or e.g. because no region is  
      *           defined for the given key)  
      */  
     int Voice::Trigger(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent, int PitchBend, ::gig::DimensionRegion* pDimRgn, type_t VoiceType, int iKeyGroup) {  
         this->pEngineChannel = pEngineChannel;  
         this->pDimRgn        = pDimRgn;  
   
         #if CONFIG_DEVMODE  
         if (itNoteOnEvent->FragmentPos() > pEngine->MaxSamplesPerCycle) { // just a sanity check for debugging  
             dmsg(1,("Voice::Trigger(): ERROR, TriggerDelay > Totalsamples\n"));  
         }  
         #endif // CONFIG_DEVMODE  
   
         Type            = VoiceType;  
         MIDIKey         = itNoteOnEvent->Param.Note.Key;  
         PlaybackState   = playback_state_init; // mark voice as triggered, but no audio rendered yet  
         Delay           = itNoteOnEvent->FragmentPos();  
         itTriggerEvent  = itNoteOnEvent;  
         itKillEvent     = Pool<Event>::Iterator();  
         KeyGroup        = iKeyGroup;  
         pSample         = pDimRgn->pSample; // sample won't change until the voice is finished  
   
         // calculate volume  
         const double velocityAttenuation = pDimRgn->GetVelocityAttenuation(itNoteOnEvent->Param.Note.Velocity);  
   
         Volume = velocityAttenuation / 32768.0f; // we downscale by 32768 to convert from int16 value range to DSP value range (which is -1.0..1.0)  
   
         Volume *= pDimRgn->SampleAttenuation;  
   
         // the volume of release triggered samples depends on note length  
         if (Type == type_release_trigger) {  
             float noteLength = float(pEngine->FrameTime + Delay -  
                                      pEngineChannel->pMIDIKeyInfo[MIDIKey].NoteOnTime) / pEngine->SampleRate;  
             float attenuation = 1 - 0.01053 * (256 >> pDimRgn->ReleaseTriggerDecay) * noteLength;  
             if (attenuation <= 0) return -1;  
             Volume *= attenuation;  
         }  
   
         // select channel mode (mono or stereo)  
         SYNTHESIS_MODE_SET_CHANNELS(SynthesisMode, pSample->Channels == 2);  
   
         // get starting crossfade volume level  
         switch (pDimRgn->AttenuationController.type) {  
             case ::gig::attenuation_ctrl_t::type_channelaftertouch:  
                 CrossfadeVolume = 1.0f; //TODO: aftertouch not supported yet  
                 break;  
             case ::gig::attenuation_ctrl_t::type_velocity:  
                 CrossfadeVolume = CrossfadeAttenuation(itNoteOnEvent->Param.Note.Velocity);  
                 break;  
             case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate  
                 CrossfadeVolume = CrossfadeAttenuation(pEngineChannel->ControllerTable[pDimRgn->AttenuationController.controller_number]);  
                 break;  
             case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined  
             default:  
                 CrossfadeVolume = 1.0f;  
         }  
55    
56          PanLeft  = 1.0f - float(RTMath::Max(pDimRgn->Pan, 0)) /  63.0f;      Voice::SampleInfo Voice::GetSampleInfo() {
57          PanRight = 1.0f - float(RTMath::Min(pDimRgn->Pan, 0)) / -64.0f;          SampleInfo si;
58            si.SampleRate       = pSample->SamplesPerSecond;
59            si.ChannelCount     = pSample->Channels;
60            si.FrameSize        = pSample->FrameSize;
61            si.BitDepth         = pSample->BitDepth;
62            si.TotalFrameCount  = (uint)pSample->SamplesTotal;
63    
64          finalSynthesisParameters.dPos = pDimRgn->SampleStartOffset; // offset where we should start playback of sample (0 - 2000 sample points)          si.HasLoops       = pRegion->SampleLoops;
65          Pos = pDimRgn->SampleStartOffset;          si.LoopStart      = (si.HasLoops) ? pRegion->pSampleLoops[0].LoopStart  : 0;
66            si.LoopLength     = (si.HasLoops) ? pRegion->pSampleLoops[0].LoopLength : 0;
67            si.LoopPlayCount  = pSample->LoopPlayCount;
68            si.Unpitched      = !pRegion->PitchTrack;
69    
70          // Check if the sample needs disk streaming or is too short for that          return si;
71          long cachedsamples = pSample->GetCache().Size / pSample->FrameSize;      }
         DiskVoice          = cachedsamples < pSample->SamplesTotal;  
   
         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  
             if (pSample->Loops && pSample->LoopEnd <= MaxRAMPos) {  
                 RAMLoop            = true;  
                 loop.uiTotalCycles = pSample->LoopPlayCount;  
                 loop.uiCyclesLeft  = pSample->LoopPlayCount;  
                 loop.uiStart       = pSample->LoopStart;  
                 loop.uiEnd         = pSample->LoopEnd;  
                 loop.uiSize        = pSample->LoopSize;  
             }  
             else RAMLoop = false;  
72    
73              if (pDiskThread->OrderNewStream(&DiskStreamRef, pSample, MaxRAMPos, !RAMLoop) < 0) {      Voice::RegionInfo Voice::GetRegionInfo() {
74                  dmsg(1,("Disk stream order failed!\n"));          RegionInfo ri;
75                  KillImmediately();          ri.UnityNote = pRegion->UnityNote;
76                  return -1;          ri.FineTune  = pRegion->FineTune;
77              }          ri.Pan       = pRegion->Pan;
78              dmsg(4,("Disk voice launched (cached samples: %d, total Samples: %d, MaxRAMPos: %d, RAMLooping: %s)\n", cachedsamples, pSample->SamplesTotal, MaxRAMPos, (RAMLoop) ? "yes" : "no"));          ri.SampleStartOffset = pRegion->SampleStartOffset;
         }  
         else { // RAM only voice  
             MaxRAMPos = cachedsamples;  
             if (pSample->Loops) {  
                 RAMLoop           = true;  
                 loop.uiCyclesLeft = pSample->LoopPlayCount;  
             }  
             else RAMLoop = false;  
             dmsg(4,("RAM only voice launched (Looping: %s)\n", (RAMLoop) ? "yes" : "no"));  
         }  
79    
80            ri.EG2PreAttack        = pRegion->EG2PreAttack;
81            ri.EG2Attack           = pRegion->EG2Attack;
82            ri.EG2Decay1           = pRegion->EG2Decay1;
83            ri.EG2Decay2           = pRegion->EG2Decay2;
84            ri.EG2Sustain          = pRegion->EG2Sustain;
85            ri.EG2InfiniteSustain  = pRegion->EG2InfiniteSustain;
86            ri.EG2Release          = pRegion->EG2Release;
87    
88          // calculate initial pitch value          ri.EG3Attack     = pRegion->EG3Attack;
89          {          ri.EG3Depth      = pRegion->EG3Depth;
90              double pitchbasecents = pDimRgn->FineTune + (int) pEngine->ScaleTuning[MIDIKey % 12];          ri.VCFEnabled    = pRegion->VCFEnabled;
91              if (pDimRgn->PitchTrack) pitchbasecents += (MIDIKey - (int) pDimRgn->UnityNote) * 100;          ri.VCFType       = Filter::vcf_type_t(pRegion->VCFType);
92              this->PitchBase = RTMath::CentsToFreqRatio(pitchbasecents) * (double(pSample->SamplesPerSecond) / double(pEngine->SampleRate));          ri.VCFResonance  = pRegion->VCFResonance;
             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;  
93    
94              // calculate influence of EG1 controller on EG1's parameters          ri.ReleaseTriggerDecay = 0.01053 * (256 >> pRegion->ReleaseTriggerDecay);
             // (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);  
         }  
95    
96            return ri;
97        }
98    
99          // setup EG 2 (VCF Cutoff EG)      Voice::InstrumentInfo Voice::GetInstrumentInfo() {
100          {          InstrumentInfo ii;
101              // get current value of EG2 controller          ii.FineTune = GetGigEngineChannel()->pInstrument->FineTune;
102              double eg2controllervalue;          ii.PitchbendRange = GetGigEngineChannel()->pInstrument->PitchbendRange;
             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;  
103    
104              // calculate influence of EG2 controller on EG2's parameters          return ii;
105              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);  
         }  
106    
107        double Voice::GetSampleAttenuation() {
108            return pRegion->SampleAttenuation;
109        }
110    
111          // setup EG 3 (VCO EG)      double Voice::GetVelocityAttenuation(uint8_t MIDIKeyVelocity) {
112          {          return pRegion->GetVelocityAttenuation(MIDIKeyVelocity);
113            double eg3depth = RTMath::CentsToFreqRatio(pDimRgn->EG3Depth);      }
           EG3.trigger(eg3depth, pDimRgn->EG3Attack, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
         }  
114    
115        double Voice::GetVelocityRelease(uint8_t MIDIKeyVelocity) {
116            return pRegion->GetVelocityRelease(MIDIKeyVelocity);
117        }
118    
119          // setup LFO 1 (VCA LFO)      void Voice::ProcessCCEvent(RTList<Event>::Iterator& itEvent) {
120          {          if (itEvent->Type == Event::type_control_change && itEvent->Param.CC.Controller) { // if (valid) MIDI control change event
121              uint16_t lfo1_internal_depth;              if (pRegion->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&
122              switch (pDimRgn->LFO1Controller) {                  itEvent->Param.CC.Controller == pRegion->AttenuationController.controller_number) {
123                  case ::gig::lfo1_ctrl_internal:                  CrossfadeSmoother.update(AbstractEngine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.CC.Value)]);
                     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;  
124              }              }
             if (bLFO1Enabled) pLFO1->trigger(pDimRgn->LFO1Frequency,  
                                              start_level_max,  
                                              lfo1_internal_depth,  
                                              pDimRgn->LFO1ControlDepth,  
                                              pDimRgn->LFO1FlipPhase,  
                                              pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
125          }          }
126        }
127    
128        void Voice::ProcessChannelPressureEvent(RTList<Event>::Iterator& itEvent) {
129          // setup LFO 2 (VCF Cutoff LFO)          if (itEvent->Type == Event::type_channel_pressure) { // if (valid) MIDI channel pressure (aftertouch) event
130          {              if (pRegion->AttenuationController.type == ::gig::attenuation_ctrl_t::type_channelaftertouch) {
131              uint16_t lfo2_internal_depth;                  CrossfadeSmoother.update(AbstractEngine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.ChannelPressure.Value)]);
             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;  
132              }              }
             if (bLFO2Enabled) pLFO2->trigger(pDimRgn->LFO2Frequency,  
                                              start_level_max,  
                                              lfo2_internal_depth,  
                                              pDimRgn->LFO2ControlDepth,  
                                              pDimRgn->LFO2FlipPhase,  
                                              pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
133          }          }
134        }
135    
136        void Voice::ProcessPolyphonicKeyPressureEvent(RTList<Event>::Iterator& itEvent) {
137            // Not used so far
138        }
139    
140          // setup LFO 3 (VCO LFO)      void Voice::ProcessCutoffEvent(RTList<Event>::Iterator& itEvent) {
141          {          int ccvalue = itEvent->Param.CC.Value;
142              uint16_t lfo3_internal_depth;          if (VCFCutoffCtrl.value == ccvalue) return;
143              switch (pDimRgn->LFO3Controller) {          VCFCutoffCtrl.value = ccvalue;
144                  case ::gig::lfo3_ctrl_internal:          if (pRegion->VCFCutoffControllerInvert)  ccvalue = 127 - ccvalue;
145                      lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;          if (ccvalue < pRegion->VCFVelocityScale) ccvalue = pRegion->VCFVelocityScale;
146                      pLFO3->ExtController = 0; // no external controller          float cutoff = CutoffBase * float(ccvalue);
147                      bLFO3Enabled         = (lfo3_internal_depth > 0);          if (cutoff > 127.0f) cutoff = 127.0f;
                     break;  
                 case ::gig::lfo3_ctrl_modwheel:  
                     lfo3_internal_depth  = 0;  
                     pLFO3->ExtController = 1; // MIDI controller 1  
                     bLFO3Enabled         = (pDimRgn->LFO3ControlDepth > 0);  
                     break;  
                 case ::gig::lfo3_ctrl_aftertouch:  
                     lfo3_internal_depth  = 0;  
                     pLFO3->ExtController = 0; // TODO: aftertouch not implemented yet  
                     bLFO3Enabled         = false; // see TODO comment in line above  
                     break;  
                 case ::gig::lfo3_ctrl_internal_modwheel:  
                     lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;  
                     pLFO3->ExtController = 1; // MIDI controller 1  
                     bLFO3Enabled         = (lfo3_internal_depth > 0 || pDimRgn->LFO3ControlDepth > 0);  
                     break;  
                 case ::gig::lfo3_ctrl_internal_aftertouch:  
                     lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;  
                     pLFO1->ExtController = 0; // TODO: aftertouch not implemented yet  
                     bLFO3Enabled         = (lfo3_internal_depth > 0 /*|| pDimRgn->LFO3ControlDepth > 0*/); // see TODO comment in line above  
                     break;  
                 default:  
                     lfo3_internal_depth  = 0;  
                     pLFO3->ExtController = 0; // no external controller  
                     bLFO3Enabled         = false;  
             }  
             if (bLFO3Enabled) pLFO3->trigger(pDimRgn->LFO3Frequency,  
                                              start_level_mid,  
                                              lfo3_internal_depth,  
                                              pDimRgn->LFO3ControlDepth,  
                                              false,  
                                              pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
         }  
148    
149            VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of fFinalCutoff next time
150            fFinalCutoff = cutoff;
151        }
152    
153          #if CONFIG_FORCE_FILTER      double Voice::CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity) {
154          const bool bUseFilter = true;          float crossfadeVolume;
155          #else // use filter only if instrument file told so          switch (pRegion->AttenuationController.type) {
156          const bool bUseFilter = pDimRgn->VCFEnabled;              case ::gig::attenuation_ctrl_t::type_channelaftertouch:
157          #endif // CONFIG_FORCE_FILTER                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[128])];
158          SYNTHESIS_MODE_SET_FILTER(SynthesisMode, bUseFilter);                  break;
159          if (bUseFilter) {              case ::gig::attenuation_ctrl_t::type_velocity:
160              #ifdef CONFIG_OVERRIDE_CUTOFF_CTRL                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(MIDIKeyVelocity)];
161              VCFCutoffCtrl.controller = CONFIG_OVERRIDE_CUTOFF_CTRL;                  break;
162              #else // use the one defined in the instrument file              case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate
163              switch (pDimRgn->VCFCutoffController) {                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[pRegion->AttenuationController.controller_number])];
164                  case ::gig::vcf_cutoff_ctrl_modwheel:                  break;
165                      VCFCutoffCtrl.controller = 1;              case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined
166                      break;              default:
167                  case ::gig::vcf_cutoff_ctrl_effect1:                  crossfadeVolume = 1.0f;
168                      VCFCutoffCtrl.controller = 12;          }
                     break;  
                 case ::gig::vcf_cutoff_ctrl_effect2:  
                     VCFCutoffCtrl.controller = 13;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_breath:  
                     VCFCutoffCtrl.controller = 2;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_foot:  
                     VCFCutoffCtrl.controller = 4;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_sustainpedal:  
                     VCFCutoffCtrl.controller = 64;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_softpedal:  
                     VCFCutoffCtrl.controller = 67;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_genpurpose7:  
                     VCFCutoffCtrl.controller = 82;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_genpurpose8:  
                     VCFCutoffCtrl.controller = 83;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_aftertouch: //TODO: not implemented yet  
                 case ::gig::vcf_cutoff_ctrl_none:  
                 default:  
                     VCFCutoffCtrl.controller = 0;  
                     break;  
             }  
             #endif // CONFIG_OVERRIDE_CUTOFF_CTRL  
169    
170              #ifdef CONFIG_OVERRIDE_RESONANCE_CTRL          return crossfadeVolume;
171              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  
172    
173              #ifndef CONFIG_OVERRIDE_FILTER_TYPE      double Voice::GetEG1ControllerValue(uint8_t MIDIKeyVelocity) {
174              finalSynthesisParameters.filterLeft.SetType(pDimRgn->VCFType);          double eg1controllervalue = 0;
175              finalSynthesisParameters.filterRight.SetType(pDimRgn->VCFType);          switch (pRegion->EG1Controller.type) {
176              #else // override filter type              case ::gig::eg1_ctrl_t::type_none: // no controller defined
177              FilterLeft.SetType(CONFIG_OVERRIDE_FILTER_TYPE);                  eg1controllervalue = 0;
178              FilterRight.SetType(CONFIG_OVERRIDE_FILTER_TYPE);                  break;
179              #endif // CONFIG_OVERRIDE_FILTER_TYPE              case ::gig::eg1_ctrl_t::type_channelaftertouch:
180                    eg1controllervalue = GetGigEngineChannel()->ControllerTable[128];
181              VCFCutoffCtrl.value    = pEngineChannel->ControllerTable[VCFCutoffCtrl.controller];                  break;
182              VCFResonanceCtrl.value = pEngineChannel->ControllerTable[VCFResonanceCtrl.controller];              case ::gig::eg1_ctrl_t::type_velocity:
183                    eg1controllervalue = MIDIKeyVelocity;
184              // calculate cutoff frequency                  break;
185              float cutoff = pDimRgn->GetVelocityCutoff(itNoteOnEvent->Param.Note.Velocity);              case ::gig::eg1_ctrl_t::type_controlchange: // MIDI control change controller
186              if (pDimRgn->VCFKeyboardTracking) {                  eg1controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG1Controller.controller_number];
187                  cutoff *= exp((itNoteOnEvent->Param.Note.Key - pDimRgn->VCFKeyboardTrackingBreakpoint) * 0.057762265f); // (ln(2) / 12)                  break;
188              }          }
189              CutoffBase = cutoff;          if (pRegion->EG1ControllerInvert) eg1controllervalue = 127 - eg1controllervalue;
190    
191              int cvalue;          return eg1controllervalue;
192              if (VCFCutoffCtrl.controller) {      }
                 cvalue = pEngineChannel->ControllerTable[VCFCutoffCtrl.controller];  
                 if (pDimRgn->VCFCutoffControllerInvert) cvalue = 127 - cvalue;  
                 if (cvalue < pDimRgn->VCFVelocityScale) cvalue = pDimRgn->VCFVelocityScale;  
             }  
             else {  
                 cvalue = pDimRgn->VCFCutoff;  
             }  
             cutoff *= float(cvalue) * 0.00787402f; // (1 / 127)  
             if (cutoff > 1.0) cutoff = 1.0;  
             cutoff = exp(cutoff * FILTER_CUTOFF_COEFF) * CONFIG_FILTER_CUTOFF_MIN;  
   
             // calculate resonance  
             float resonance = (float) VCFResonanceCtrl.value * 0.00787f;   // 0.0..1.0  
             if (pDimRgn->VCFKeyboardTracking) {  
                 resonance += (float) (itNoteOnEvent->Param.Note.Key - pDimRgn->VCFKeyboardTrackingBreakpoint) * 0.00787f;  
             }  
             Constrain(resonance, 0.0, 1.0); // correct resonance if outside allowed value range (0.0..1.0)  
193    
194              VCFCutoffCtrl.fvalue    = cutoff - CONFIG_FILTER_CUTOFF_MIN;      Voice::EGInfo Voice::CalculateEG1ControllerInfluence(double eg1ControllerValue) {
195              VCFResonanceCtrl.fvalue = resonance;          EGInfo eg;
196          }          // (eg1attack is different from the others)
197          else {          if (pRegion->EG1Attack < 1e-8 && // attack in gig == 0
198              VCFCutoffCtrl.controller    = 0;              (pRegion->EG1ControllerAttackInfluence == 0 ||
199              VCFResonanceCtrl.controller = 0;               eg1ControllerValue <= 10)) { // strange GSt special case
200                eg.Attack = 0; // this will force the attack to be 0 in the call to EG1.trigger
201            } else {
202                eg.Attack  = (pRegion->EG1ControllerAttackInfluence)  ?
203                    1 + 0.031 * (double) (pRegion->EG1ControllerAttackInfluence == 1 ?
204                                          1 : 1 << pRegion->EG1ControllerAttackInfluence) * eg1ControllerValue : 1.0;
205            }
206            eg.Decay   = (pRegion->EG1ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerDecayInfluence)   * eg1ControllerValue : 1.0;
207            eg.Release = (pRegion->EG1ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerReleaseInfluence) * eg1ControllerValue : 1.0;
208    
209            return eg;
210        }
211    
212        double Voice::GetEG2ControllerValue(uint8_t MIDIKeyVelocity) {
213            double eg2controllervalue = 0;
214            switch (pRegion->EG2Controller.type) {
215                case ::gig::eg2_ctrl_t::type_none: // no controller defined
216                    eg2controllervalue = 0;
217                    break;
218                case ::gig::eg2_ctrl_t::type_channelaftertouch:
219                    eg2controllervalue = GetGigEngineChannel()->ControllerTable[128];
220                    break;
221                case ::gig::eg2_ctrl_t::type_velocity:
222                    eg2controllervalue = MIDIKeyVelocity;
223                    break;
224                case ::gig::eg2_ctrl_t::type_controlchange: // MIDI control change controller
225                    eg2controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG2Controller.controller_number];
226                    break;
227          }          }
228            if (pRegion->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue;
229    
230          return 0; // success          return eg2controllervalue;
231      }      }
232    
233      /**      Voice::EGInfo Voice::CalculateEG2ControllerInfluence(double eg2ControllerValue) {
234       *  Renders the audio data for this voice for the current audio fragment.          EGInfo eg;
235       *  The sample input data can either come from RAM (cached sample or sample          eg.Attack  = (pRegion->EG2ControllerAttackInfluence)  ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerAttackInfluence)  * eg2ControllerValue : 1.0;
236       *  part) or directly from disk. The output signal will be rendered by          eg.Decay   = (pRegion->EG2ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerDecayInfluence)   * eg2ControllerValue : 1.0;
237       *  resampling / interpolation. If this voice is a disk streaming voice and          eg.Release = (pRegion->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerReleaseInfluence) * eg2ControllerValue : 1.0;
238       *  the voice completely played back the cached RAM part of the sample, it  
239       *  will automatically switch to disk playback for the next RenderAudio()          return eg;
      *  call.  
      *  
      *  @param Samples - number of samples to be rendered in this audio fragment cycle  
      */  
     void Voice::Render(uint Samples) {  
   
         // select default values for synthesis mode bits  
         SYNTHESIS_MODE_SET_LOOP(SynthesisMode, false);  
   
         switch (this->PlaybackState) {  
   
             case playback_state_init:  
                 this->PlaybackState = playback_state_ram; // we always start playback from RAM cache and switch then to disk if needed  
                 // no break - continue with playback_state_ram  
   
             case playback_state_ram: {  
                     if (RAMLoop) SYNTHESIS_MODE_SET_LOOP(SynthesisMode, true); // enable looping  
   
                     // render current fragment  
                     Synthesize(Samples, (sample_t*) pSample->GetCache().pStart, Delay);  
   
                     if (DiskVoice) {  
                         // check if we reached the allowed limit of the sample RAM cache  
                         if (finalSynthesisParameters.dPos > MaxRAMPos) {  
                             dmsg(5,("Voice: switching to disk playback (Pos=%f)\n", finalSynthesisParameters.dPos));  
                             this->PlaybackState = playback_state_disk;  
                         }  
                     } else if (finalSynthesisParameters.dPos >= pSample->GetCache().Size / pSample->FrameSize) {  
                         this->PlaybackState = playback_state_end;  
                     }  
                 }  
                 break;  
   
             case playback_state_disk: {  
                     if (!DiskStreamRef.pStream) {  
                         // check if the disk thread created our ordered disk stream in the meantime  
                         DiskStreamRef.pStream = pDiskThread->AskForCreatedStream(DiskStreamRef.OrderID);  
                         if (!DiskStreamRef.pStream) {  
                             std::cout << stderr << "Disk stream not available in time!" << std::endl << std::flush;  
                             KillImmediately();  
                             return;  
                         }  
                         DiskStreamRef.pStream->IncrementReadPos(pSample->Channels * (int(finalSynthesisParameters.dPos) - MaxRAMPos));  
                         finalSynthesisParameters.dPos -= int(finalSynthesisParameters.dPos);  
                         RealSampleWordsLeftToRead = -1; // -1 means no silence has been added yet  
                     }  
   
                     const int sampleWordsLeftToRead = DiskStreamRef.pStream->GetReadSpace();  
   
                     // add silence sample at the end if we reached the end of the stream (for the interpolator)  
                     if (DiskStreamRef.State == Stream::state_end) {  
                         const int maxSampleWordsPerCycle = (pEngine->MaxSamplesPerCycle << CONFIG_MAX_PITCH) * pSample->Channels + 6; // +6 for the interpolator algorithm  
                         if (sampleWordsLeftToRead <= maxSampleWordsPerCycle) {  
                             // remember how many sample words there are before any silence has been added  
                             if (RealSampleWordsLeftToRead < 0) RealSampleWordsLeftToRead = sampleWordsLeftToRead;  
                             DiskStreamRef.pStream->WriteSilence(maxSampleWordsPerCycle - sampleWordsLeftToRead);  
                         }  
                     }  
   
                     sample_t* ptr = DiskStreamRef.pStream->GetReadPtr(); // get the current read_ptr within the ringbuffer where we read the samples from  
   
                     // render current audio fragment  
                     Synthesize(Samples, ptr, Delay);  
   
                     const int iPos = (int) finalSynthesisParameters.dPos;  
                     const int readSampleWords = iPos * pSample->Channels; // amount of sample words actually been read  
                     DiskStreamRef.pStream->IncrementReadPos(readSampleWords);  
                     finalSynthesisParameters.dPos -= iPos; // just keep fractional part of playback position  
   
                     // change state of voice to 'end' if we really reached the end of the sample data  
                     if (RealSampleWordsLeftToRead >= 0) {  
                         RealSampleWordsLeftToRead -= readSampleWords;  
                         if (RealSampleWordsLeftToRead <= 0) this->PlaybackState = playback_state_end;  
                     }  
                 }  
                 break;  
   
             case playback_state_end:  
                 std::cerr << "gig::Voice::Render(): entered with playback_state_end, this is a bug!\n" << std::flush;  
                 break;  
         }  
   
         // Reset delay  
         Delay = 0;  
   
         itTriggerEvent = Pool<Event>::Iterator();  
   
         // If sample stream or release stage finished, kill the voice  
         if (PlaybackState == playback_state_end || EG1.getSegmentType() == EGADSR::segment_end) KillImmediately();  
     }  
   
     /**  
      *  Resets voice variables. Should only be called if rendering process is  
      *  suspended / not running.  
      */  
     void Voice::Reset() {  
         finalSynthesisParameters.filterLeft.Reset();  
         finalSynthesisParameters.filterRight.Reset();  
         DiskStreamRef.pStream = NULL;  
         DiskStreamRef.hStream = 0;  
         DiskStreamRef.State   = Stream::state_unused;  
         DiskStreamRef.OrderID = 0;  
         PlaybackState = playback_state_end;  
         itTriggerEvent = Pool<Event>::Iterator();  
         itKillEvent    = Pool<Event>::Iterator();  
     }  
   
     /**  
      * Process given list of MIDI note on, note off and sustain pedal events  
      * for the given time.  
      *  
      * @param itEvent - iterator pointing to the next event to be processed  
      * @param End     - youngest time stamp where processing should be stopped  
      */  
     void Voice::processTransitionEvents(RTList<Event>::Iterator& itEvent, uint End) {  
         for (; itEvent && itEvent->FragmentPos() <= End; ++itEvent) {  
             if (itEvent->Type == Event::type_release) {  
                 EG1.update(EGADSR::event_release, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
                 EG2.update(EGADSR::event_release, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
             } else if (itEvent->Type == Event::type_cancel_release) {  
                 EG1.update(EGADSR::event_cancel_release, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
                 EG2.update(EGADSR::event_cancel_release, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
             }  
         }  
240      }      }
241    
242      /**      void Voice::InitLFO1() {
243       * Process given list of MIDI control change and pitch bend events for          uint16_t lfo1_internal_depth;
244       * the given time.          switch (pRegion->LFO1Controller) {
245       *              case ::gig::lfo1_ctrl_internal:
246       * @param itEvent - iterator pointing to the next event to be processed                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
247       * @param End     - youngest time stamp where processing should be stopped                  pLFO1->ExtController = 0; // no external controller
248       */                  bLFO1Enabled         = (lfo1_internal_depth > 0);
249      void Voice::processCCEvents(RTList<Event>::Iterator& itEvent, uint End) {                  break;
250          for (; itEvent && itEvent->FragmentPos() <= End; ++itEvent) {              case ::gig::lfo1_ctrl_modwheel:
251              if (itEvent->Type == Event::type_control_change &&                  lfo1_internal_depth  = 0;
252                  itEvent->Param.CC.Controller) { // if (valid) MIDI control change event                  pLFO1->ExtController = 1; // MIDI controller 1
253                  if (itEvent->Param.CC.Controller == VCFCutoffCtrl.controller) {                  bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
254                      processCutoffEvent(itEvent);                  break;
255                  }              case ::gig::lfo1_ctrl_breath:
256                  if (itEvent->Param.CC.Controller == VCFResonanceCtrl.controller) {                  lfo1_internal_depth  = 0;
257                      processResonanceEvent(itEvent);                  pLFO1->ExtController = 2; // MIDI controller 2
258                  }                  bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
259                  if (itEvent->Param.CC.Controller == pLFO1->ExtController) {                  break;
260                      pLFO1->update(itEvent->Param.CC.Value);              case ::gig::lfo1_ctrl_internal_modwheel:
261                  }                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
262                  if (itEvent->Param.CC.Controller == pLFO2->ExtController) {                  pLFO1->ExtController = 1; // MIDI controller 1
263                      pLFO2->update(itEvent->Param.CC.Value);                  bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
264                  }                  break;
265                  if (itEvent->Param.CC.Controller == pLFO3->ExtController) {              case ::gig::lfo1_ctrl_internal_breath:
266                      pLFO3->update(itEvent->Param.CC.Value);                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
267                  }                  pLFO1->ExtController = 2; // MIDI controller 2
268                  if (pDimRgn->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&                  bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
269                      itEvent->Param.CC.Controller == pDimRgn->AttenuationController.controller_number) {                  break;
270                      processCrossFadeEvent(itEvent);              default:
271                  }                  lfo1_internal_depth  = 0;
272              } else if (itEvent->Type == Event::type_pitchbend) { // if pitch bend event                  pLFO1->ExtController = 0; // no external controller
273                  processPitchEvent(itEvent);                  bLFO1Enabled         = false;
274              }          }
275            if (bLFO1Enabled) {
276                pLFO1->trigger(pRegion->LFO1Frequency,
277                               start_level_min,
278                               lfo1_internal_depth,
279                               pRegion->LFO1ControlDepth,
280                               pRegion->LFO1FlipPhase,
281                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
282                pLFO1->updateByMIDICtrlValue(pLFO1->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO1->ExtController] : 0);
283                pLFO1->setScriptDepthFactor(pNote->Override.AmpLFODepth);
284                pLFO1->setScriptFrequencyFactor(pNote->Override.AmpLFOFreq, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
285          }          }
286      }      }
287    
288      void Voice::processPitchEvent(RTList<Event>::Iterator& itEvent) {      void Voice::InitLFO2() {
289          const float pitch = RTMath::CentsToFreqRatio(((double) itEvent->Param.Pitch.Pitch / 8192.0) * 200.0); // +-two semitones = +-200 cents          uint16_t lfo2_internal_depth;
290          finalSynthesisParameters.fFinalPitch *= pitch;          switch (pRegion->LFO2Controller) {
291          PitchBend = pitch;              case ::gig::lfo2_ctrl_internal:
292      }                  lfo2_internal_depth  = pRegion->LFO2InternalDepth;
293                    pLFO2->ExtController = 0; // no external controller
294      void Voice::processCrossFadeEvent(RTList<Event>::Iterator& itEvent) {                  bLFO2Enabled         = (lfo2_internal_depth > 0);
295          CrossfadeVolume = CrossfadeAttenuation(itEvent->Param.CC.Value);                  break;
296          #if CONFIG_PROCESS_MUTED_CHANNELS              case ::gig::lfo2_ctrl_modwheel:
297          const float effectiveVolume = CrossfadeVolume * Volume * (pEngineChannel->GetMute() ? 0 : pEngineChannel->GlobalVolume);                  lfo2_internal_depth  = 0;
298          #else                  pLFO2->ExtController = 1; // MIDI controller 1
299          const float effectiveVolume = CrossfadeVolume * Volume * pEngineChannel->GlobalVolume;                  bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
300          #endif                  break;
301          fFinalVolume = effectiveVolume;              case ::gig::lfo2_ctrl_foot:
302                    lfo2_internal_depth  = 0;
303                    pLFO2->ExtController = 4; // MIDI controller 4
304                    bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
305                    break;
306                case ::gig::lfo2_ctrl_internal_modwheel:
307                    lfo2_internal_depth  = pRegion->LFO2InternalDepth;
308                    pLFO2->ExtController = 1; // MIDI controller 1
309                    bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
310                    break;
311                case ::gig::lfo2_ctrl_internal_foot:
312                    lfo2_internal_depth  = pRegion->LFO2InternalDepth;
313                    pLFO2->ExtController = 4; // MIDI controller 4
314                    bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
315                    break;
316                default:
317                    lfo2_internal_depth  = 0;
318                    pLFO2->ExtController = 0; // no external controller
319                    bLFO2Enabled         = false;
320            }
321            if (bLFO2Enabled) {
322                pLFO2->trigger(pRegion->LFO2Frequency,
323                               start_level_max,
324                               lfo2_internal_depth,
325                               pRegion->LFO2ControlDepth,
326                               pRegion->LFO2FlipPhase,
327                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
328                pLFO2->updateByMIDICtrlValue(pLFO2->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO2->ExtController] : 0);
329            }
330      }      }
331    
332      void Voice::processCutoffEvent(RTList<Event>::Iterator& itEvent) {      void Voice::InitLFO3() {
333          int ccvalue = itEvent->Param.CC.Value;          uint16_t lfo3_internal_depth;
334          if (VCFCutoffCtrl.value == ccvalue) return;          switch (pRegion->LFO3Controller) {
335          VCFCutoffCtrl.value == ccvalue;              case ::gig::lfo3_ctrl_internal:
336          if (pDimRgn->VCFCutoffControllerInvert)  ccvalue = 127 - ccvalue;                  lfo3_internal_depth  = pRegion->LFO3InternalDepth;
337          if (ccvalue < pDimRgn->VCFVelocityScale) ccvalue = pDimRgn->VCFVelocityScale;                  pLFO3->ExtController = 0; // no external controller
338          float cutoff = CutoffBase * float(ccvalue) * 0.00787402f; // (1 / 127)                  bLFO3Enabled         = (lfo3_internal_depth > 0);
339          if (cutoff > 1.0) cutoff = 1.0;                  break;
340          cutoff = exp(cutoff * FILTER_CUTOFF_COEFF) * CONFIG_FILTER_CUTOFF_MIN - CONFIG_FILTER_CUTOFF_MIN;              case ::gig::lfo3_ctrl_modwheel:
341          VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of fFinalCutoff next time                  lfo3_internal_depth  = 0;
342          fFinalCutoff = cutoff;                  pLFO3->ExtController = 1; // MIDI controller 1
343                    bLFO3Enabled         = (pRegion->LFO3ControlDepth > 0);
344                    break;
345                case ::gig::lfo3_ctrl_aftertouch:
346                    lfo3_internal_depth  = 0;
347                    pLFO3->ExtController = CTRL_TABLE_IDX_AFTERTOUCH;
348                    bLFO3Enabled         = true;
349                    break;
350                case ::gig::lfo3_ctrl_internal_modwheel:
351                    lfo3_internal_depth  = pRegion->LFO3InternalDepth;
352                    pLFO3->ExtController = 1; // MIDI controller 1
353                    bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
354                    break;
355                case ::gig::lfo3_ctrl_internal_aftertouch:
356                    lfo3_internal_depth  = pRegion->LFO3InternalDepth;
357                    pLFO3->ExtController = CTRL_TABLE_IDX_AFTERTOUCH;
358                    bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
359                    break;
360                default:
361                    lfo3_internal_depth  = 0;
362                    pLFO3->ExtController = 0; // no external controller
363                    bLFO3Enabled         = false;
364            }
365            if (bLFO3Enabled) {
366                pLFO3->trigger(pRegion->LFO3Frequency,
367                               start_level_mid,
368                               lfo3_internal_depth,
369                               pRegion->LFO3ControlDepth,
370                               false,
371                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
372                pLFO3->updateByMIDICtrlValue(pLFO3->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO3->ExtController] : 0);
373                pLFO3->setScriptDepthFactor(pNote->Override.PitchLFODepth);
374                pLFO3->setScriptFrequencyFactor(pNote->Override.PitchLFOFreq, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
375            }
376      }      }
377    
378      void Voice::processResonanceEvent(RTList<Event>::Iterator& itEvent) {      float Voice::CalculateCutoffBase(uint8_t MIDIKeyVelocity) {
379          // convert absolute controller value to differential          float cutoff = pRegion->GetVelocityCutoff(MIDIKeyVelocity);
380          const int ctrldelta = itEvent->Param.CC.Value - VCFResonanceCtrl.value;          if (pRegion->VCFKeyboardTracking) {
381          VCFResonanceCtrl.value = itEvent->Param.CC.Value;              cutoff *= RTMath::CentsToFreqRatioUnlimited((MIDIKey() - pRegion->VCFKeyboardTrackingBreakpoint) * 100);
382          const float resonancedelta = (float) ctrldelta * 0.00787f; // 0.0..1.0          }
383          fFinalResonance += resonancedelta;          return cutoff;
384          // needed for initialization of parameter      }
385          VCFResonanceCtrl.fvalue = itEvent->Param.CC.Value * 0.00787f;  
386      }      float Voice::CalculateFinalCutoff(float cutoffBase) {
387            int cvalue;
388      /**          if (VCFCutoffCtrl.controller) {
389       *  Synthesizes the current audio fragment for this voice.              cvalue = GetGigEngineChannel()->ControllerTable[VCFCutoffCtrl.controller];
390       *              if (pRegion->VCFCutoffControllerInvert) cvalue = 127 - cvalue;
391       *  @param Samples - number of sample points to be rendered in this audio              // VCFVelocityScale in this case means Minimum cutoff
392       *                   fragment cycle              if (cvalue < pRegion->VCFVelocityScale) cvalue = pRegion->VCFVelocityScale;
393       *  @param pSrc    - pointer to input sample data          }
394       *  @param Skip    - number of sample points to skip in output buffer          else {
395       */              cvalue = pRegion->VCFCutoff;
396      void Voice::Synthesize(uint Samples, sample_t* pSrc, uint Skip) {          }
397          finalSynthesisParameters.pOutLeft  = &pEngineChannel->pOutputLeft[Skip];          float fco = cutoffBase * float(cvalue);
398          finalSynthesisParameters.pOutRight = &pEngineChannel->pOutputRight[Skip];          if (fco > 127.0f) fco = 127.0f;
         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 i = Skip;  
         while (i < Samples) {  
             int iSubFragmentEnd = RTMath::Min(i + CONFIG_DEFAULT_SUBFRAGMENT_SIZE, Samples);  
   
             // initialize all final synthesis parameters  
             finalSynthesisParameters.fFinalPitch = PitchBase * PitchBend;  
             #if CONFIG_PROCESS_MUTED_CHANNELS  
             fFinalVolume = this->Volume * this->CrossfadeVolume * (pEngineChannel->GetMute() ? 0 : pEngineChannel->GlobalVolume);  
             #else  
             fFinalVolume = this->Volume * this->CrossfadeVolume * pEngineChannel->GlobalVolume;  
             #endif  
             fFinalCutoff    = VCFCutoffCtrl.fvalue;  
             fFinalResonance = VCFResonanceCtrl.fvalue;  
   
             // process MIDI control change and pitchbend events for this subfragment  
             processCCEvents(itCCEvent, iSubFragmentEnd);  
   
             // process transition events (note on, note off & sustain pedal)  
             processTransitionEvents(itNoteEvent, iSubFragmentEnd);  
   
             // process envelope generators  
             switch (EG1.getSegmentType()) {  
                 case EGADSR::segment_lin:  
                     fFinalVolume *= EG1.processLin();  
                     break;  
                 case EGADSR::segment_exp:  
                     fFinalVolume *= EG1.processExp();  
                     break;  
                 case EGADSR::segment_end:  
                     fFinalVolume *= EG1.getLevel();  
                     break; // noop  
             }  
             switch (EG2.getSegmentType()) {  
                 case EGADSR::segment_lin:  
                     fFinalCutoff *= EG2.processLin();  
                     break;  
                 case EGADSR::segment_exp:  
                     fFinalCutoff *= EG2.processExp();  
                     break;  
                 case EGADSR::segment_end:  
                     fFinalCutoff *= EG2.getLevel();  
                     break; // noop  
             }  
             if (EG3.active()) finalSynthesisParameters.fFinalPitch *= RTMath::CentsToFreqRatio(EG3.render());  
399    
400              // process low frequency oscillators          return fco;
401              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);  
             }  
402    
403              // do we need resampling?      uint8_t Voice::GetVCFCutoffCtrl() {
404              const float __PLUS_ONE_CENT  = 1.000577789506554859250142541782224725466f;          uint8_t ctrl;
405              const float __MINUS_ONE_CENT = 0.9994225441413807496009516495583113737666f;          switch (pRegion->VCFCutoffController) {
406              const bool bResamplingRequired = !(finalSynthesisParameters.fFinalPitch <= __PLUS_ONE_CENT &&              case ::gig::vcf_cutoff_ctrl_modwheel:
407                                                 finalSynthesisParameters.fFinalPitch >= __MINUS_ONE_CENT);                  ctrl = 1;
408              SYNTHESIS_MODE_SET_INTERPOLATE(SynthesisMode, bResamplingRequired);                  break;
409                case ::gig::vcf_cutoff_ctrl_effect1:
410              // prepare final synthesis parameters structure                  ctrl = 12;
411              finalSynthesisParameters.fFinalVolumeLeft  = fFinalVolume * PanLeft;                  break;
412              finalSynthesisParameters.fFinalVolumeRight = fFinalVolume * PanRight;              case ::gig::vcf_cutoff_ctrl_effect2:
413              finalSynthesisParameters.uiToGo            = iSubFragmentEnd - i;                  ctrl = 13;
414                    break;
415              // render audio for one subfragment              case ::gig::vcf_cutoff_ctrl_breath:
416              RunSynthesisFunction(SynthesisMode, &finalSynthesisParameters, &loop);                  ctrl = 2;
417                    break;
418              const double newPos = Pos + (iSubFragmentEnd - i) * finalSynthesisParameters.fFinalPitch;              case ::gig::vcf_cutoff_ctrl_foot:
419                    ctrl = 4;
420              // increment envelopes' positions                  break;
421              if (EG1.active()) {              case ::gig::vcf_cutoff_ctrl_sustainpedal:
422                    ctrl = 64;
423                  // 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                  break;
424                  if (pSample->Loops && Pos <= pSample->LoopStart && pSample->LoopStart < newPos) {              case ::gig::vcf_cutoff_ctrl_softpedal:
425                      EG1.update(EGADSR::event_hold_end, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);                  ctrl = 67;
426                  }                  break;
427                case ::gig::vcf_cutoff_ctrl_genpurpose7:
428                    ctrl = 82;
429                    break;
430                case ::gig::vcf_cutoff_ctrl_genpurpose8:
431                    ctrl = 83;
432                    break;
433                case ::gig::vcf_cutoff_ctrl_aftertouch:
434                    ctrl = CTRL_TABLE_IDX_AFTERTOUCH;
435                    break;
436                case ::gig::vcf_cutoff_ctrl_none:
437                default:
438                    ctrl = 0;
439                    break;
440            }
441    
442                  EG1.increment(1);          return ctrl;
443                  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  
444    
445              Pos = newPos;      uint8_t Voice::GetVCFResonanceCtrl() {
446              i = iSubFragmentEnd;          uint8_t ctrl;
447            switch (pRegion->VCFResonanceController) {
448                case ::gig::vcf_res_ctrl_genpurpose3:
449                    ctrl = 18;
450                    break;
451                case ::gig::vcf_res_ctrl_genpurpose4:
452                    ctrl = 19;
453                    break;
454                case ::gig::vcf_res_ctrl_genpurpose5:
455                    ctrl = 80;
456                    break;
457                case ::gig::vcf_res_ctrl_genpurpose6:
458                    ctrl = 81;
459                    break;
460                case ::gig::vcf_res_ctrl_none:
461                default:
462                    ctrl = 0;
463          }          }
     }  
464    
465      /**          return ctrl;
466       *  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  
467    
468          if (itTriggerEvent && itKillEvent->FragmentPos() <= itTriggerEvent->FragmentPos()) return;      void Voice::TriggerEG1(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
469          this->itKillEvent = itKillEvent;          EG1.setStateOptions(
470                pRegion->EG1Options.AttackCancel,
471                pRegion->EG1Options.AttackHoldCancel,
472                pRegion->EG1Options.Decay1Cancel,
473                pRegion->EG1Options.Decay2Cancel,
474                pRegion->EG1Options.ReleaseCancel
475            );
476            EG1.trigger(pRegion->EG1PreAttack,
477                        RTMath::Max(pRegion->EG1Attack, 0.0316) * egInfo.Attack,
478                        pRegion->EG1Hold,
479                        pRegion->EG1Decay1 * egInfo.Decay * velrelease,
480                        pRegion->EG1Decay2 * egInfo.Decay * velrelease,
481                        pRegion->EG1InfiniteSustain,
482                        pRegion->EG1Sustain * (pNote ? pNote->Override.Sustain : 1.f),
483                        RTMath::Max(pRegion->EG1Release * velrelease, 0.014) * egInfo.Release,
484                        velocityAttenuation,
485                        sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
486        }
487    
488        void Voice::TriggerEG2(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
489            EG2.setStateOptions(
490                pRegion->EG2Options.AttackCancel,
491                pRegion->EG2Options.AttackHoldCancel,
492                pRegion->EG2Options.Decay1Cancel,
493                pRegion->EG2Options.Decay2Cancel,
494                pRegion->EG2Options.ReleaseCancel
495            );
496            EG2.trigger(uint(RgnInfo.EG2PreAttack),
497                        RgnInfo.EG2Attack * egInfo.Attack,
498                        false,
499                        RgnInfo.EG2Decay1 * egInfo.Decay * velrelease,
500                        RgnInfo.EG2Decay2 * egInfo.Decay * velrelease,
501                        RgnInfo.EG2InfiniteSustain,
502                        uint(RgnInfo.EG2Sustain),
503                        RgnInfo.EG2Release * egInfo.Release * velrelease,
504                        velocityAttenuation,
505                        sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
506        }
507    
508        void Voice::ProcessGroupEvent(RTList<Event>::Iterator& itEvent) {
509            dmsg(4,("Voice %p processGroupEvents event type=%d", (void*)this, itEvent->Type));
510    
511            // TODO: The SustainPedal condition could be wrong, maybe the
512            // check should be if this Voice is in release stage or is a
513            // release sample instead. Need to test this in GSt.
514            // -- Andreas
515            //
516            // Commented sustain pedal check out. I don't think voices of the same
517            // note should be stopped at all, because it doesn't sound naturally
518            // with a drumkit.
519            // -- Christian, 2013-01-08
520            if (itEvent->Param.Note.Key != HostKey() /*||
521                !GetGigEngineChannel()->SustainPedal*/) {
522                dmsg(4,("Voice %p - kill", (void*)this));
523    
524                // kill the voice fast
525                pEG1->enterFadeOutStage();
526            }
527        }
528    
529        void Voice::CalculateFadeOutCoeff(float FadeOutTime, float SampleRate) {
530            EG1.CalculateFadeOutCoeff(FadeOutTime, SampleRate);
531        }
532    
533        int Voice::CalculatePan(uint8_t pan) {
534            int p;
535            // Gst behaviour: -64 and 63 are special cases
536            if (RgnInfo.Pan == -64)     p = pan * 2 - 127;
537            else if (RgnInfo.Pan == 63) p = pan * 2;
538            else                        p = pan + RgnInfo.Pan;
539    
540            if (p < 0) return 0;
541            if (p > 127) return 127;
542            return p;
543      }      }
544    
545  }} // namespace LinuxSampler::gig  }} // namespace LinuxSampler::gig
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