/[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 830 by persson, Sun Jan 15 18:23:11 2006 UTC revision 3054 by schoenebeck, Thu Dec 15 12:47:45 2016 UTC
# Line 3  Line 3 
3   *   LinuxSampler - modular, streaming capable sampler                     *   *   LinuxSampler - modular, streaming capable sampler                     *
4   *                                                                         *   *                                                                         *
5   *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *   *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *
6   *   Copyright (C) 2005, 2006 Christian Schoenebeck                        *   *   Copyright (C) 2005 - 2008 Christian Schoenebeck                       *
7     *   Copyright (C) 2009 Christian Schoenebeck and Grigor Iliev             *
8     *   Copyright (C) 2010 - 2016 Christian Schoenebeck and Andreas Persson   *
9   *                                                                         *   *                                                                         *
10   *   This program is free software; you can redistribute it and/or modify  *   *   This program is free software; you can redistribute it and/or modify  *
11   *   it under the terms of the GNU General Public License as published by  *   *   it under the terms of the GNU General Public License as published by  *
# Line 24  Line 26 
26  #include "../../common/Features.h"  #include "../../common/Features.h"
27  #include "Synthesizer.h"  #include "Synthesizer.h"
28  #include "Profiler.h"  #include "Profiler.h"
29    #include "Engine.h"
30    #include "EngineChannel.h"
31    
32  #include "Voice.h"  #include "Voice.h"
33    
34  namespace LinuxSampler { namespace gig {  namespace LinuxSampler { namespace gig {
35    
     const float Voice::FILTER_CUTOFF_COEFF(CalculateFilterCutoffCoeff());  
   
     float Voice::CalculateFilterCutoffCoeff() {  
         return log(CONFIG_FILTER_CUTOFF_MAX / CONFIG_FILTER_CUTOFF_MIN);  
     }  
   
36      Voice::Voice() {      Voice::Voice() {
37          pEngine     = NULL;          pEngine = NULL;
38          pDiskThread = NULL;          pEG1 = &EG1;
39          PlaybackState = playback_state_end;          pEG2 = &EG2;
         pLFO1 = new LFOUnsigned(1.0f);  // amplitude EG (0..1 range)  
         pLFO2 = new LFOUnsigned(1.0f);  // filter EG (0..1 range)  
         pLFO3 = new LFOSigned(1200.0f); // pitch EG (-1200..+1200 range)  
         KeyGroup = 0;  
         SynthesisMode = 0; // set all mode bits to 0 first  
         // select synthesis implementation (currently either pure C++ or MMX+SSE(1))  
         #if CONFIG_ASM && ARCH_X86  
         SYNTHESIS_MODE_SET_IMPLEMENTATION(SynthesisMode, Features::supportsMMX() && Features::supportsSSE());  
         #else  
         SYNTHESIS_MODE_SET_IMPLEMENTATION(SynthesisMode, false);  
         #endif  
         SYNTHESIS_MODE_SET_PROFILING(SynthesisMode, Profiler::isEnabled());  
   
         finalSynthesisParameters.filterLeft.Reset();  
         finalSynthesisParameters.filterRight.Reset();  
40      }      }
41    
42      Voice::~Voice() {      Voice::~Voice() {
         if (pLFO1) delete pLFO1;  
         if (pLFO2) delete pLFO2;  
         if (pLFO3) delete pLFO3;  
43      }      }
44    
45      void Voice::SetEngine(Engine* pEngine) {      EngineChannel* Voice::GetGigEngineChannel() {
46          this->pEngine     = pEngine;          return static_cast<EngineChannel*>(pEngineChannel);
         this->pDiskThread = pEngine->pDiskThread;  
         dmsg(6,("Voice::SetEngine()\n"));  
47      }      }
48    
49      /**      void Voice::SetEngine(LinuxSampler::Engine* pEngine) {
50       *  Initializes and triggers the voice, a disk stream will be launched if          Engine* engine = static_cast<Engine*>(pEngine);
51       *  needed.          this->pEngine     = engine;
52       *          this->pDiskThread = engine->pDiskThread;
53       *  @param pEngineChannel - engine channel on which this voice was ordered          dmsg(6,("Voice::SetEngine()\n"));
54       *  @param itNoteOnEvent  - event that caused triggering of this voice      }
      *  @param PitchBend      - MIDI detune factor (-8192 ... +8191)  
      *  @param pDimRgn        - points to the dimension region which provides sample wave(s) and articulation data  
      *  @param VoiceType      - type of this voice  
      *  @param iKeyGroup      - a value > 0 defines a key group in which this voice is member of  
      *  @returns 0 on success, a value < 0 if the voice wasn't triggered  
      *           (either due to an error or e.g. because no region is  
      *           defined for the given key)  
      */  
     int Voice::Trigger(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent, int PitchBend, ::gig::DimensionRegion* pDimRgn, type_t VoiceType, int iKeyGroup) {  
         this->pEngineChannel = pEngineChannel;  
         this->pDimRgn        = pDimRgn;  
   
         #if CONFIG_DEVMODE  
         if (itNoteOnEvent->FragmentPos() > pEngine->MaxSamplesPerCycle) { // just a sanity check for debugging  
             dmsg(1,("Voice::Trigger(): ERROR, TriggerDelay > Totalsamples\n"));  
         }  
         #endif // CONFIG_DEVMODE  
   
         Type            = VoiceType;  
         MIDIKey         = itNoteOnEvent->Param.Note.Key;  
         PlaybackState   = playback_state_init; // mark voice as triggered, but no audio rendered yet  
         Delay           = itNoteOnEvent->FragmentPos();  
         itTriggerEvent  = itNoteOnEvent;  
         itKillEvent     = Pool<Event>::Iterator();  
         KeyGroup        = iKeyGroup;  
         pSample         = pDimRgn->pSample; // sample won't change until the voice is finished  
   
         // calculate volume  
         const double velocityAttenuation = pDimRgn->GetVelocityAttenuation(itNoteOnEvent->Param.Note.Velocity);  
   
         Volume = velocityAttenuation / 32768.0f; // we downscale by 32768 to convert from int16 value range to DSP value range (which is -1.0..1.0)  
   
         Volume *= pDimRgn->SampleAttenuation;  
   
         // the volume of release triggered samples depends on note length  
         if (Type == type_release_trigger) {  
             float noteLength = float(pEngine->FrameTime + Delay -  
                                      pEngineChannel->pMIDIKeyInfo[MIDIKey].NoteOnTime) / pEngine->SampleRate;  
             float attenuation = 1 - 0.01053 * (256 >> pDimRgn->ReleaseTriggerDecay) * noteLength;  
             if (attenuation <= 0) return -1;  
             Volume *= attenuation;  
         }  
55    
56          // select channel mode (mono or stereo)      Voice::SampleInfo Voice::GetSampleInfo() {
57          SYNTHESIS_MODE_SET_CHANNELS(SynthesisMode, pSample->Channels == 2);          SampleInfo si;
58            si.SampleRate       = pSample->SamplesPerSecond;
59            si.ChannelCount     = pSample->Channels;
60            si.FrameSize        = pSample->FrameSize;
61            si.BitDepth         = pSample->BitDepth;
62            si.TotalFrameCount  = (uint)pSample->SamplesTotal;
63    
64          // get starting crossfade volume level          si.HasLoops       = pRegion->SampleLoops;
65          switch (pDimRgn->AttenuationController.type) {          si.LoopStart      = (si.HasLoops) ? pRegion->pSampleLoops[0].LoopStart  : 0;
66              case ::gig::attenuation_ctrl_t::type_channelaftertouch:          si.LoopLength     = (si.HasLoops) ? pRegion->pSampleLoops[0].LoopLength : 0;
67                  CrossfadeVolume = 1.0f; //TODO: aftertouch not supported yet          si.LoopPlayCount  = pSample->LoopPlayCount;
68                  break;          si.Unpitched      = !pRegion->PitchTrack;
             case ::gig::attenuation_ctrl_t::type_velocity:  
                 CrossfadeVolume = CrossfadeAttenuation(itNoteOnEvent->Param.Note.Velocity);  
                 break;  
             case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate  
                 CrossfadeVolume = CrossfadeAttenuation(pEngineChannel->ControllerTable[pDimRgn->AttenuationController.controller_number]);  
                 break;  
             case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined  
             default:  
                 CrossfadeVolume = 1.0f;  
         }  
69    
70          PanLeft  = 1.0f - float(RTMath::Max(pDimRgn->Pan, 0)) /  63.0f;          return si;
71          PanRight = 1.0f - float(RTMath::Min(pDimRgn->Pan, 0)) / -64.0f;      }
72    
73          finalSynthesisParameters.dPos = pDimRgn->SampleStartOffset; // offset where we should start playback of sample (0 - 2000 sample points)      Voice::RegionInfo Voice::GetRegionInfo() {
74          Pos = pDimRgn->SampleStartOffset;          RegionInfo ri;
75            ri.UnityNote = pRegion->UnityNote;
76            ri.FineTune  = pRegion->FineTune;
77            ri.Pan       = pRegion->Pan;
78            ri.SampleStartOffset = pRegion->SampleStartOffset;
79    
80          // Check if the sample needs disk streaming or is too short for that          ri.EG2PreAttack        = pRegion->EG2PreAttack;
81          long cachedsamples = pSample->GetCache().Size / pSample->FrameSize;          ri.EG2Attack           = pRegion->EG2Attack;
82          DiskVoice          = cachedsamples < pSample->SamplesTotal;          ri.EG2Decay1           = pRegion->EG2Decay1;
83            ri.EG2Decay2           = pRegion->EG2Decay2;
84            ri.EG2Sustain          = pRegion->EG2Sustain;
85            ri.EG2InfiniteSustain  = pRegion->EG2InfiniteSustain;
86            ri.EG2Release          = pRegion->EG2Release;
87    
88          if (DiskVoice) { // voice to be streamed from disk          ri.EG3Attack     = pRegion->EG3Attack;
89              MaxRAMPos = cachedsamples - (pEngine->MaxSamplesPerCycle << CONFIG_MAX_PITCH) / pSample->Channels; //TODO: this calculation is too pessimistic and may better be moved to Render() method, so it calculates MaxRAMPos dependent to the current demand of sample points to be rendered (e.g. in case of JACK)          ri.EG3Depth      = pRegion->EG3Depth;
90            ri.VCFEnabled    = pRegion->VCFEnabled;
91            ri.VCFType       = Filter::vcf_type_t(pRegion->VCFType);
92            ri.VCFResonance  = pRegion->VCFResonance;
93    
94              // check if there's a loop defined which completely fits into the cached (RAM) part of the sample          ri.ReleaseTriggerDecay = 0.01053 * (256 >> pRegion->ReleaseTriggerDecay);
             RAMLoop = (pSample->Loops && pSample->LoopEnd <= MaxRAMPos);  
95    
96              if (pDiskThread->OrderNewStream(&DiskStreamRef, pSample, MaxRAMPos, !RAMLoop) < 0) {          return ri;
97                  dmsg(1,("Disk stream order failed!\n"));      }
                 KillImmediately();  
                 return -1;  
             }  
             dmsg(4,("Disk voice launched (cached samples: %d, total Samples: %d, MaxRAMPos: %d, RAMLooping: %s)\n", cachedsamples, pSample->SamplesTotal, MaxRAMPos, (RAMLoop) ? "yes" : "no"));  
         }  
         else { // RAM only voice  
             MaxRAMPos = cachedsamples;  
             RAMLoop = (pSample->Loops != 0);  
             dmsg(4,("RAM only voice launched (Looping: %s)\n", (RAMLoop) ? "yes" : "no"));  
         }  
         if (RAMLoop) {  
             loop.uiTotalCycles = pSample->LoopPlayCount;  
             loop.uiCyclesLeft  = pSample->LoopPlayCount;  
             loop.uiStart       = pSample->LoopStart;  
             loop.uiEnd         = pSample->LoopEnd;  
             loop.uiSize        = pSample->LoopSize;  
         }  
   
         // calculate initial pitch value  
         {  
             double pitchbasecents = pDimRgn->FineTune + (int) pEngine->ScaleTuning[MIDIKey % 12];  
             if (pDimRgn->PitchTrack) pitchbasecents += (MIDIKey - (int) pDimRgn->UnityNote) * 100;  
             this->PitchBase = RTMath::CentsToFreqRatio(pitchbasecents) * (double(pSample->SamplesPerSecond) / double(pEngine->SampleRate));  
             this->PitchBend = RTMath::CentsToFreqRatio(((double) PitchBend / 8192.0) * 200.0); // pitchbend wheel +-2 semitones = 200 cents  
         }  
   
         // the length of the decay and release curves are dependent on the velocity  
         const double velrelease = 1 / pDimRgn->GetVelocityRelease(itNoteOnEvent->Param.Note.Velocity);  
   
         // setup EG 1 (VCA EG)  
         {  
             // get current value of EG1 controller  
             double eg1controllervalue;  
             switch (pDimRgn->EG1Controller.type) {  
                 case ::gig::eg1_ctrl_t::type_none: // no controller defined  
                     eg1controllervalue = 0;  
                     break;  
                 case ::gig::eg1_ctrl_t::type_channelaftertouch:  
                     eg1controllervalue = 0; // TODO: aftertouch not yet supported  
                     break;  
                 case ::gig::eg1_ctrl_t::type_velocity:  
                     eg1controllervalue = itNoteOnEvent->Param.Note.Velocity;  
                     break;  
                 case ::gig::eg1_ctrl_t::type_controlchange: // MIDI control change controller  
                     eg1controllervalue = pEngineChannel->ControllerTable[pDimRgn->EG1Controller.controller_number];  
                     break;  
             }  
             if (pDimRgn->EG1ControllerInvert) eg1controllervalue = 127 - eg1controllervalue;  
98    
99              // calculate influence of EG1 controller on EG1's parameters      Voice::InstrumentInfo Voice::GetInstrumentInfo() {
100              // (eg1attack is different from the others)          InstrumentInfo ii;
101              double eg1attack  = (pDimRgn->EG1ControllerAttackInfluence)  ?          ii.FineTune = GetGigEngineChannel()->pInstrument->FineTune;
102                  1 + 0.031 * (double) (pDimRgn->EG1ControllerAttackInfluence == 1 ?          ii.PitchbendRange = GetGigEngineChannel()->pInstrument->PitchbendRange;
                                       1 : 1 << pDimRgn->EG1ControllerAttackInfluence) * eg1controllervalue : 1.0;  
             double eg1decay   = (pDimRgn->EG1ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pDimRgn->EG1ControllerDecayInfluence)   * eg1controllervalue : 1.0;  
             double eg1release = (pDimRgn->EG1ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pDimRgn->EG1ControllerReleaseInfluence) * eg1controllervalue : 1.0;  
   
             EG1.trigger(pDimRgn->EG1PreAttack,  
                         pDimRgn->EG1Attack * eg1attack,  
                         pDimRgn->EG1Hold,  
                         pDimRgn->EG1Decay1 * eg1decay * velrelease,  
                         pDimRgn->EG1Decay2 * eg1decay * velrelease,  
                         pDimRgn->EG1InfiniteSustain,  
                         pDimRgn->EG1Sustain,  
                         pDimRgn->EG1Release * eg1release * velrelease,  
                         velocityAttenuation,  
                         pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
         }  
   
         // setup initial volume in synthesis parameters  
         fFinalVolume = getVolume() * EG1.getLevel();  
         finalSynthesisParameters.fFinalVolumeLeft  = fFinalVolume * PanLeft;  
         finalSynthesisParameters.fFinalVolumeRight = fFinalVolume * PanRight;  
   
   
         // 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;  
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);  
         }  
   
   
         // setup EG 3 (VCO EG)  
         {  
             // if portamento mode is on, we dedicate EG3 purely for portamento, otherwise if portamento is off we do as told by the patch  
             bool  bPortamento = pEngineChannel->PortamentoMode && pEngineChannel->PortamentoPos >= 0.0f;  
             float eg3depth = (bPortamento)  
                                  ? RTMath::CentsToFreqRatio((pEngineChannel->PortamentoPos - (float) MIDIKey) * 100)  
                                  : RTMath::CentsToFreqRatio(pDimRgn->EG3Depth);  
             float eg3time = (bPortamento)  
                                 ? pEngineChannel->PortamentoTime  
                                 : pDimRgn->EG3Attack;  
             EG3.trigger(eg3depth, eg3time, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
             dmsg(5,("PortamentoPos=%f, depth=%f, time=%f\n", pEngineChannel->PortamentoPos, eg3depth, eg3time));  
         }  
   
   
         // setup LFO 1 (VCA LFO)  
         {  
             uint16_t lfo1_internal_depth;  
             switch (pDimRgn->LFO1Controller) {  
                 case ::gig::lfo1_ctrl_internal:  
                     lfo1_internal_depth  = pDimRgn->LFO1InternalDepth;  
                     pLFO1->ExtController = 0; // no external controller  
                     bLFO1Enabled         = (lfo1_internal_depth > 0);  
                     break;  
                 case ::gig::lfo1_ctrl_modwheel:  
                     lfo1_internal_depth  = 0;  
                     pLFO1->ExtController = 1; // MIDI controller 1  
                     bLFO1Enabled         = (pDimRgn->LFO1ControlDepth > 0);  
                     break;  
                 case ::gig::lfo1_ctrl_breath:  
                     lfo1_internal_depth  = 0;  
                     pLFO1->ExtController = 2; // MIDI controller 2  
                     bLFO1Enabled         = (pDimRgn->LFO1ControlDepth > 0);  
                     break;  
                 case ::gig::lfo1_ctrl_internal_modwheel:  
                     lfo1_internal_depth  = pDimRgn->LFO1InternalDepth;  
                     pLFO1->ExtController = 1; // MIDI controller 1  
                     bLFO1Enabled         = (lfo1_internal_depth > 0 || pDimRgn->LFO1ControlDepth > 0);  
                     break;  
                 case ::gig::lfo1_ctrl_internal_breath:  
                     lfo1_internal_depth  = pDimRgn->LFO1InternalDepth;  
                     pLFO1->ExtController = 2; // MIDI controller 2  
                     bLFO1Enabled         = (lfo1_internal_depth > 0 || pDimRgn->LFO1ControlDepth > 0);  
                     break;  
                 default:  
                     lfo1_internal_depth  = 0;  
                     pLFO1->ExtController = 0; // no external controller  
                     bLFO1Enabled         = false;  
             }  
             if (bLFO1Enabled) pLFO1->trigger(pDimRgn->LFO1Frequency,  
                                              start_level_max,  
                                              lfo1_internal_depth,  
                                              pDimRgn->LFO1ControlDepth,  
                                              pDimRgn->LFO1FlipPhase,  
                                              pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
         }  
106    
107        double Voice::GetSampleAttenuation() {
108            return pRegion->SampleAttenuation;
109        }
110    
111          // setup LFO 2 (VCF Cutoff LFO)      double Voice::GetVelocityAttenuation(uint8_t MIDIKeyVelocity) {
112          {          return pRegion->GetVelocityAttenuation(MIDIKeyVelocity);
113              uint16_t lfo2_internal_depth;      }
             switch (pDimRgn->LFO2Controller) {  
                 case ::gig::lfo2_ctrl_internal:  
                     lfo2_internal_depth  = pDimRgn->LFO2InternalDepth;  
                     pLFO2->ExtController = 0; // no external controller  
                     bLFO2Enabled         = (lfo2_internal_depth > 0);  
                     break;  
                 case ::gig::lfo2_ctrl_modwheel:  
                     lfo2_internal_depth  = 0;  
                     pLFO2->ExtController = 1; // MIDI controller 1  
                     bLFO2Enabled         = (pDimRgn->LFO2ControlDepth > 0);  
                     break;  
                 case ::gig::lfo2_ctrl_foot:  
                     lfo2_internal_depth  = 0;  
                     pLFO2->ExtController = 4; // MIDI controller 4  
                     bLFO2Enabled         = (pDimRgn->LFO2ControlDepth > 0);  
                     break;  
                 case ::gig::lfo2_ctrl_internal_modwheel:  
                     lfo2_internal_depth  = pDimRgn->LFO2InternalDepth;  
                     pLFO2->ExtController = 1; // MIDI controller 1  
                     bLFO2Enabled         = (lfo2_internal_depth > 0 || pDimRgn->LFO2ControlDepth > 0);  
                     break;  
                 case ::gig::lfo2_ctrl_internal_foot:  
                     lfo2_internal_depth  = pDimRgn->LFO2InternalDepth;  
                     pLFO2->ExtController = 4; // MIDI controller 4  
                     bLFO2Enabled         = (lfo2_internal_depth > 0 || pDimRgn->LFO2ControlDepth > 0);  
                     break;  
                 default:  
                     lfo2_internal_depth  = 0;  
                     pLFO2->ExtController = 0; // no external controller  
                     bLFO2Enabled         = false;  
             }  
             if (bLFO2Enabled) pLFO2->trigger(pDimRgn->LFO2Frequency,  
                                              start_level_max,  
                                              lfo2_internal_depth,  
                                              pDimRgn->LFO2ControlDepth,  
                                              pDimRgn->LFO2FlipPhase,  
                                              pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
         }  
114    
115        double Voice::GetVelocityRelease(uint8_t MIDIKeyVelocity) {
116            return pRegion->GetVelocityRelease(MIDIKeyVelocity);
117        }
118    
119          // setup LFO 3 (VCO 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 lfo3_internal_depth;              if (pRegion->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&
122              switch (pDimRgn->LFO3Controller) {                  itEvent->Param.CC.Controller == pRegion->AttenuationController.controller_number) {
123                  case ::gig::lfo3_ctrl_internal:                  CrossfadeSmoother.update(AbstractEngine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.CC.Value)]);
                     lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;  
                     pLFO3->ExtController = 0; // no external controller  
                     bLFO3Enabled         = (lfo3_internal_depth > 0);  
                     break;  
                 case ::gig::lfo3_ctrl_modwheel:  
                     lfo3_internal_depth  = 0;  
                     pLFO3->ExtController = 1; // MIDI controller 1  
                     bLFO3Enabled         = (pDimRgn->LFO3ControlDepth > 0);  
                     break;  
                 case ::gig::lfo3_ctrl_aftertouch:  
                     lfo3_internal_depth  = 0;  
                     pLFO3->ExtController = 0; // TODO: aftertouch not implemented yet  
                     bLFO3Enabled         = false; // see TODO comment in line above  
                     break;  
                 case ::gig::lfo3_ctrl_internal_modwheel:  
                     lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;  
                     pLFO3->ExtController = 1; // MIDI controller 1  
                     bLFO3Enabled         = (lfo3_internal_depth > 0 || pDimRgn->LFO3ControlDepth > 0);  
                     break;  
                 case ::gig::lfo3_ctrl_internal_aftertouch:  
                     lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;  
                     pLFO1->ExtController = 0; // TODO: aftertouch not implemented yet  
                     bLFO3Enabled         = (lfo3_internal_depth > 0 /*|| pDimRgn->LFO3ControlDepth > 0*/); // see TODO comment in line above  
                     break;  
                 default:  
                     lfo3_internal_depth  = 0;  
                     pLFO3->ExtController = 0; // no external controller  
                     bLFO3Enabled         = false;  
124              }              }
             if (bLFO3Enabled) pLFO3->trigger(pDimRgn->LFO3Frequency,  
                                              start_level_mid,  
                                              lfo3_internal_depth,  
                                              pDimRgn->LFO3ControlDepth,  
                                              false,  
                                              pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
125          }          }
126        }
127    
128        void Voice::ProcessChannelPressureEvent(RTList<Event>::Iterator& itEvent) {
129          #if CONFIG_FORCE_FILTER          if (itEvent->Type == Event::type_channel_pressure) { // if (valid) MIDI channel pressure (aftertouch) event
130          const bool bUseFilter = true;              if (pRegion->AttenuationController.type == ::gig::attenuation_ctrl_t::type_channelaftertouch) {
131          #else // use filter only if instrument file told so                  CrossfadeSmoother.update(AbstractEngine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.ChannelPressure.Value)]);
         const bool bUseFilter = pDimRgn->VCFEnabled;  
         #endif // CONFIG_FORCE_FILTER  
         SYNTHESIS_MODE_SET_FILTER(SynthesisMode, bUseFilter);  
         if (bUseFilter) {  
             #ifdef CONFIG_OVERRIDE_CUTOFF_CTRL  
             VCFCutoffCtrl.controller = CONFIG_OVERRIDE_CUTOFF_CTRL;  
             #else // use the one defined in the instrument file  
             switch (pDimRgn->VCFCutoffController) {  
                 case ::gig::vcf_cutoff_ctrl_modwheel:  
                     VCFCutoffCtrl.controller = 1;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_effect1:  
                     VCFCutoffCtrl.controller = 12;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_effect2:  
                     VCFCutoffCtrl.controller = 13;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_breath:  
                     VCFCutoffCtrl.controller = 2;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_foot:  
                     VCFCutoffCtrl.controller = 4;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_sustainpedal:  
                     VCFCutoffCtrl.controller = 64;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_softpedal:  
                     VCFCutoffCtrl.controller = 67;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_genpurpose7:  
                     VCFCutoffCtrl.controller = 82;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_genpurpose8:  
                     VCFCutoffCtrl.controller = 83;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_aftertouch: //TODO: not implemented yet  
                 case ::gig::vcf_cutoff_ctrl_none:  
                 default:  
                     VCFCutoffCtrl.controller = 0;  
                     break;  
             }  
             #endif // CONFIG_OVERRIDE_CUTOFF_CTRL  
   
             #ifdef CONFIG_OVERRIDE_RESONANCE_CTRL  
             VCFResonanceCtrl.controller = CONFIG_OVERRIDE_RESONANCE_CTRL;  
             #else // use the one defined in the instrument file  
             switch (pDimRgn->VCFResonanceController) {  
                 case ::gig::vcf_res_ctrl_genpurpose3:  
                     VCFResonanceCtrl.controller = 18;  
                     break;  
                 case ::gig::vcf_res_ctrl_genpurpose4:  
                     VCFResonanceCtrl.controller = 19;  
                     break;  
                 case ::gig::vcf_res_ctrl_genpurpose5:  
                     VCFResonanceCtrl.controller = 80;  
                     break;  
                 case ::gig::vcf_res_ctrl_genpurpose6:  
                     VCFResonanceCtrl.controller = 81;  
                     break;  
                 case ::gig::vcf_res_ctrl_none:  
                 default:  
                     VCFResonanceCtrl.controller = 0;  
132              }              }
133              #endif // CONFIG_OVERRIDE_RESONANCE_CTRL          }
134        }
135    
136              #ifndef CONFIG_OVERRIDE_FILTER_TYPE      void Voice::ProcessPolyphonicKeyPressureEvent(RTList<Event>::Iterator& itEvent) {
137              finalSynthesisParameters.filterLeft.SetType(pDimRgn->VCFType);          // Not used so far
138              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;  
139    
140              int cvalue;      void Voice::ProcessCutoffEvent(RTList<Event>::Iterator& itEvent) {
141              if (VCFCutoffCtrl.controller) {          int ccvalue = itEvent->Param.CC.Value;
142                  cvalue = pEngineChannel->ControllerTable[VCFCutoffCtrl.controller];          if (VCFCutoffCtrl.value == ccvalue) return;
143                  if (pDimRgn->VCFCutoffControllerInvert) cvalue = 127 - cvalue;          VCFCutoffCtrl.value = ccvalue;
144                  // VCFVelocityScale in this case means Minimum cutoff          if (pRegion->VCFCutoffControllerInvert)  ccvalue = 127 - ccvalue;
145                  if (cvalue < pDimRgn->VCFVelocityScale) cvalue = pDimRgn->VCFVelocityScale;          if (ccvalue < pRegion->VCFVelocityScale) ccvalue = pRegion->VCFVelocityScale;
146              }          float cutoff = CutoffBase * float(ccvalue);
147              else {          if (cutoff > 127.0f) cutoff = 127.0f;
                 cvalue = pDimRgn->VCFCutoff;  
             }  
             cutoff *= float(cvalue) * 0.00787402f; // (1 / 127)  
             if (cutoff > 1.0) cutoff = 1.0;  
             cutoff = (cutoff < 0.5 ? cutoff * 4826 - 1 : cutoff * 5715 - 449);  
             if (cutoff < 1.0) cutoff = 1.0;  
148    
149              // calculate resonance          VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of fFinalCutoff next time
150              float resonance = (float) (VCFResonanceCtrl.controller ? VCFResonanceCtrl.value : pDimRgn->VCFResonance) * 0.00787f; // 0.0..1.0          fFinalCutoff = cutoff;
151        }
152    
153              VCFCutoffCtrl.fvalue    = cutoff - 1.0;      double Voice::CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity) {
154              VCFResonanceCtrl.fvalue = resonance;          float crossfadeVolume;
155          }          switch (pRegion->AttenuationController.type) {
156          else {              case ::gig::attenuation_ctrl_t::type_channelaftertouch:
157              VCFCutoffCtrl.controller    = 0;                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[128])];
158              VCFResonanceCtrl.controller = 0;                  break;
159                case ::gig::attenuation_ctrl_t::type_velocity:
160                    crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(MIDIKeyVelocity)];
161                    break;
162                case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate
163                    crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[pRegion->AttenuationController.controller_number])];
164                    break;
165                case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined
166                default:
167                    crossfadeVolume = 1.0f;
168          }          }
169    
170          return 0; // success          return crossfadeVolume;
171      }      }
172    
173      /**      double Voice::GetEG1ControllerValue(uint8_t MIDIKeyVelocity) {
174       *  Renders the audio data for this voice for the current audio fragment.          double eg1controllervalue = 0;
175       *  The sample input data can either come from RAM (cached sample or sample          switch (pRegion->EG1Controller.type) {
176       *  part) or directly from disk. The output signal will be rendered by              case ::gig::eg1_ctrl_t::type_none: // no controller defined
177       *  resampling / interpolation. If this voice is a disk streaming voice and                  eg1controllervalue = 0;
178       *  the voice completely played back the cached RAM part of the sample, it                  break;
179       *  will automatically switch to disk playback for the next RenderAudio()              case ::gig::eg1_ctrl_t::type_channelaftertouch:
180       *  call.                  eg1controllervalue = GetGigEngineChannel()->ControllerTable[128];
181       *                  break;
182       *  @param Samples - number of samples to be rendered in this audio fragment cycle              case ::gig::eg1_ctrl_t::type_velocity:
183       */                  eg1controllervalue = MIDIKeyVelocity;
184      void Voice::Render(uint Samples) {                  break;
185                case ::gig::eg1_ctrl_t::type_controlchange: // MIDI control change controller
186          // select default values for synthesis mode bits                  eg1controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG1Controller.controller_number];
187          SYNTHESIS_MODE_SET_LOOP(SynthesisMode, false);                  break;
   
         switch (this->PlaybackState) {  
   
             case playback_state_init:  
                 this->PlaybackState = playback_state_ram; // we always start playback from RAM cache and switch then to disk if needed  
                 // no break - continue with playback_state_ram  
   
             case playback_state_ram: {  
                     if (RAMLoop) SYNTHESIS_MODE_SET_LOOP(SynthesisMode, true); // enable looping  
   
                     // render current fragment  
                     Synthesize(Samples, (sample_t*) pSample->GetCache().pStart, Delay);  
   
                     if (DiskVoice) {  
                         // check if we reached the allowed limit of the sample RAM cache  
                         if (finalSynthesisParameters.dPos > MaxRAMPos) {  
                             dmsg(5,("Voice: switching to disk playback (Pos=%f)\n", finalSynthesisParameters.dPos));  
                             this->PlaybackState = playback_state_disk;  
                         }  
                     } else if (finalSynthesisParameters.dPos >= pSample->GetCache().Size / pSample->FrameSize) {  
                         this->PlaybackState = playback_state_end;  
                     }  
                 }  
                 break;  
   
             case playback_state_disk: {  
                     if (!DiskStreamRef.pStream) {  
                         // check if the disk thread created our ordered disk stream in the meantime  
                         DiskStreamRef.pStream = pDiskThread->AskForCreatedStream(DiskStreamRef.OrderID);  
                         if (!DiskStreamRef.pStream) {  
                             std::cout << stderr << "Disk stream not available in time!" << std::endl << std::flush;  
                             KillImmediately();  
                             return;  
                         }  
                         DiskStreamRef.pStream->IncrementReadPos(pSample->Channels * (int(finalSynthesisParameters.dPos) - MaxRAMPos));  
                         finalSynthesisParameters.dPos -= int(finalSynthesisParameters.dPos);  
                         RealSampleWordsLeftToRead = -1; // -1 means no silence has been added yet  
                     }  
   
                     const int sampleWordsLeftToRead = DiskStreamRef.pStream->GetReadSpace();  
   
                     // add silence sample at the end if we reached the end of the stream (for the interpolator)  
                     if (DiskStreamRef.State == Stream::state_end) {  
                         const int maxSampleWordsPerCycle = (pEngine->MaxSamplesPerCycle << CONFIG_MAX_PITCH) * pSample->Channels + 6; // +6 for the interpolator algorithm  
                         if (sampleWordsLeftToRead <= maxSampleWordsPerCycle) {  
                             // remember how many sample words there are before any silence has been added  
                             if (RealSampleWordsLeftToRead < 0) RealSampleWordsLeftToRead = sampleWordsLeftToRead;  
                             DiskStreamRef.pStream->WriteSilence(maxSampleWordsPerCycle - sampleWordsLeftToRead);  
                         }  
                     }  
   
                     sample_t* ptr = DiskStreamRef.pStream->GetReadPtr(); // get the current read_ptr within the ringbuffer where we read the samples from  
   
                     // render current audio fragment  
                     Synthesize(Samples, ptr, Delay);  
   
                     const int iPos = (int) finalSynthesisParameters.dPos;  
                     const int readSampleWords = iPos * pSample->Channels; // amount of sample words actually been read  
                     DiskStreamRef.pStream->IncrementReadPos(readSampleWords);  
                     finalSynthesisParameters.dPos -= iPos; // just keep fractional part of playback position  
   
                     // change state of voice to 'end' if we really reached the end of the sample data  
                     if (RealSampleWordsLeftToRead >= 0) {  
                         RealSampleWordsLeftToRead -= readSampleWords;  
                         if (RealSampleWordsLeftToRead <= 0) this->PlaybackState = playback_state_end;  
                     }  
                 }  
                 break;  
   
             case playback_state_end:  
                 std::cerr << "gig::Voice::Render(): entered with playback_state_end, this is a bug!\n" << std::flush;  
                 break;  
         }  
   
         // Reset delay  
         Delay = 0;  
   
         itTriggerEvent = Pool<Event>::Iterator();  
   
         // If sample stream or release stage finished, kill the voice  
         if (PlaybackState == playback_state_end || EG1.getSegmentType() == EGADSR::segment_end) KillImmediately();  
     }  
   
     /**  
      *  Resets voice variables. Should only be called if rendering process is  
      *  suspended / not running.  
      */  
     void Voice::Reset() {  
         finalSynthesisParameters.filterLeft.Reset();  
         finalSynthesisParameters.filterRight.Reset();  
         DiskStreamRef.pStream = NULL;  
         DiskStreamRef.hStream = 0;  
         DiskStreamRef.State   = Stream::state_unused;  
         DiskStreamRef.OrderID = 0;  
         PlaybackState = playback_state_end;  
         itTriggerEvent = Pool<Event>::Iterator();  
         itKillEvent    = Pool<Event>::Iterator();  
     }  
   
     /**  
      * Process given list of MIDI note on, note off and sustain pedal events  
      * for the given time.  
      *  
      * @param itEvent - iterator pointing to the next event to be processed  
      * @param End     - youngest time stamp where processing should be stopped  
      */  
     void Voice::processTransitionEvents(RTList<Event>::Iterator& itEvent, uint End) {  
         for (; itEvent && itEvent->FragmentPos() <= End; ++itEvent) {  
             if (itEvent->Type == Event::type_release) {  
                 EG1.update(EGADSR::event_release, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
                 EG2.update(EGADSR::event_release, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
             } else if (itEvent->Type == Event::type_cancel_release) {  
                 EG1.update(EGADSR::event_cancel_release, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
                 EG2.update(EGADSR::event_cancel_release, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
             }  
188          }          }
189            if (pRegion->EG1ControllerInvert) eg1controllervalue = 127 - eg1controllervalue;
190    
191            return eg1controllervalue;
192      }      }
193    
194      /**      Voice::EGInfo Voice::CalculateEG1ControllerInfluence(double eg1ControllerValue) {
195       * Process given list of MIDI control change and pitch bend events for          EGInfo eg;
196       * the given time.          // (eg1attack is different from the others)
197       *          if (pRegion->EG1Attack < 1e-8 && // attack in gig == 0
198       * @param itEvent - iterator pointing to the next event to be processed              (pRegion->EG1ControllerAttackInfluence == 0 ||
199       * @param End     - youngest time stamp where processing should be stopped               eg1ControllerValue <= 10)) { // strange GSt special case
200       */              eg.Attack = 0; // this will force the attack to be 0 in the call to EG1.trigger
201      void Voice::processCCEvents(RTList<Event>::Iterator& itEvent, uint End) {          } else {
202          for (; itEvent && itEvent->FragmentPos() <= End; ++itEvent) {              eg.Attack  = (pRegion->EG1ControllerAttackInfluence)  ?
203              if (itEvent->Type == Event::type_control_change &&                  1 + 0.031 * (double) (pRegion->EG1ControllerAttackInfluence == 1 ?
204                  itEvent->Param.CC.Controller) { // if (valid) MIDI control change event                                        1 : 1 << pRegion->EG1ControllerAttackInfluence) * eg1ControllerValue : 1.0;
205                  if (itEvent->Param.CC.Controller == VCFCutoffCtrl.controller) {          }
206                      processCutoffEvent(itEvent);          eg.Decay   = (pRegion->EG1ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerDecayInfluence)   * eg1ControllerValue : 1.0;
207                  }          eg.Release = (pRegion->EG1ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerReleaseInfluence) * eg1ControllerValue : 1.0;
208                  if (itEvent->Param.CC.Controller == VCFResonanceCtrl.controller) {  
209                      processResonanceEvent(itEvent);          return eg;
210                  }      }
211                  if (itEvent->Param.CC.Controller == pLFO1->ExtController) {  
212                      pLFO1->update(itEvent->Param.CC.Value);      double Voice::GetEG2ControllerValue(uint8_t MIDIKeyVelocity) {
213                  }          double eg2controllervalue = 0;
214                  if (itEvent->Param.CC.Controller == pLFO2->ExtController) {          switch (pRegion->EG2Controller.type) {
215                      pLFO2->update(itEvent->Param.CC.Value);              case ::gig::eg2_ctrl_t::type_none: // no controller defined
216                  }                  eg2controllervalue = 0;
217                  if (itEvent->Param.CC.Controller == pLFO3->ExtController) {                  break;
218                      pLFO3->update(itEvent->Param.CC.Value);              case ::gig::eg2_ctrl_t::type_channelaftertouch:
219                  }                  eg2controllervalue = GetGigEngineChannel()->ControllerTable[128];
220                  if (pDimRgn->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&                  break;
221                      itEvent->Param.CC.Controller == pDimRgn->AttenuationController.controller_number) {              case ::gig::eg2_ctrl_t::type_velocity:
222                      processCrossFadeEvent(itEvent);                  eg2controllervalue = MIDIKeyVelocity;
223                  }                  break;
224              } else if (itEvent->Type == Event::type_pitchbend) { // if pitch bend event              case ::gig::eg2_ctrl_t::type_controlchange: // MIDI control change controller
225                  processPitchEvent(itEvent);                  eg2controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG2Controller.controller_number];
226              }                  break;
227          }          }
228      }          if (pRegion->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue;
229    
230      void Voice::processPitchEvent(RTList<Event>::Iterator& itEvent) {          return eg2controllervalue;
         const float pitch = RTMath::CentsToFreqRatio(((double) itEvent->Param.Pitch.Pitch / 8192.0) * 200.0); // +-two semitones = +-200 cents  
         finalSynthesisParameters.fFinalPitch *= pitch;  
         PitchBend = pitch;  
231      }      }
232    
233      void Voice::processCrossFadeEvent(RTList<Event>::Iterator& itEvent) {      Voice::EGInfo Voice::CalculateEG2ControllerInfluence(double eg2ControllerValue) {
234          CrossfadeVolume = CrossfadeAttenuation(itEvent->Param.CC.Value);          EGInfo eg;
235          fFinalVolume = getVolume();          eg.Attack  = (pRegion->EG2ControllerAttackInfluence)  ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerAttackInfluence)  * eg2ControllerValue : 1.0;
236      }          eg.Decay   = (pRegion->EG2ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerDecayInfluence)   * eg2ControllerValue : 1.0;
237            eg.Release = (pRegion->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerReleaseInfluence) * eg2ControllerValue : 1.0;
238    
239      float Voice::getVolume() {          return eg;
         #if CONFIG_PROCESS_MUTED_CHANNELS  
         return pEngineChannel->GetMute() ? 0 : (Volume * CrossfadeVolume * pEngineChannel->GlobalVolume);  
         #else  
         return Volume * CrossfadeVolume * pEngineChannel->GlobalVolume;  
         #endif  
240      }      }
241    
242      void Voice::processCutoffEvent(RTList<Event>::Iterator& itEvent) {      void Voice::InitLFO1() {
243          int ccvalue = itEvent->Param.CC.Value;          uint16_t lfo1_internal_depth;
244          if (VCFCutoffCtrl.value == ccvalue) return;          switch (pRegion->LFO1Controller) {
245          VCFCutoffCtrl.value == ccvalue;              case ::gig::lfo1_ctrl_internal:
246          if (pDimRgn->VCFCutoffControllerInvert)  ccvalue = 127 - ccvalue;                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
247          if (ccvalue < pDimRgn->VCFVelocityScale) ccvalue = pDimRgn->VCFVelocityScale;                  pLFO1->ExtController = 0; // no external controller
248          float cutoff = CutoffBase * float(ccvalue) * 0.00787402f; // (1 / 127)                  bLFO1Enabled         = (lfo1_internal_depth > 0);
249          if (cutoff > 1.0) cutoff = 1.0;                  break;
250          cutoff = (cutoff < 0.5 ? cutoff * 4826 - 1 : cutoff * 5715 - 449);              case ::gig::lfo1_ctrl_modwheel:
251          if (cutoff < 1.0) cutoff = 1.0;                  lfo1_internal_depth  = 0;
252                    pLFO1->ExtController = 1; // MIDI controller 1
253                    bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
254                    break;
255                case ::gig::lfo1_ctrl_breath:
256                    lfo1_internal_depth  = 0;
257                    pLFO1->ExtController = 2; // MIDI controller 2
258                    bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
259                    break;
260                case ::gig::lfo1_ctrl_internal_modwheel:
261                    lfo1_internal_depth  = pRegion->LFO1InternalDepth;
262                    pLFO1->ExtController = 1; // MIDI controller 1
263                    bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
264                    break;
265                case ::gig::lfo1_ctrl_internal_breath:
266                    lfo1_internal_depth  = pRegion->LFO1InternalDepth;
267                    pLFO1->ExtController = 2; // MIDI controller 2
268                    bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
269                    break;
270                default:
271                    lfo1_internal_depth  = 0;
272                    pLFO1->ExtController = 0; // no external controller
273                    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->update(pLFO1->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO1->ExtController] : 0);
283            }
284        }
285    
286          VCFCutoffCtrl.fvalue = cutoff - 1.0; // needed for initialization of fFinalCutoff next time      void Voice::InitLFO2() {
287          fFinalCutoff = cutoff;          uint16_t lfo2_internal_depth;
288            switch (pRegion->LFO2Controller) {
289                case ::gig::lfo2_ctrl_internal:
290                    lfo2_internal_depth  = pRegion->LFO2InternalDepth;
291                    pLFO2->ExtController = 0; // no external controller
292                    bLFO2Enabled         = (lfo2_internal_depth > 0);
293                    break;
294                case ::gig::lfo2_ctrl_modwheel:
295                    lfo2_internal_depth  = 0;
296                    pLFO2->ExtController = 1; // MIDI controller 1
297                    bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
298                    break;
299                case ::gig::lfo2_ctrl_foot:
300                    lfo2_internal_depth  = 0;
301                    pLFO2->ExtController = 4; // MIDI controller 4
302                    bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
303                    break;
304                case ::gig::lfo2_ctrl_internal_modwheel:
305                    lfo2_internal_depth  = pRegion->LFO2InternalDepth;
306                    pLFO2->ExtController = 1; // MIDI controller 1
307                    bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
308                    break;
309                case ::gig::lfo2_ctrl_internal_foot:
310                    lfo2_internal_depth  = pRegion->LFO2InternalDepth;
311                    pLFO2->ExtController = 4; // MIDI controller 4
312                    bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
313                    break;
314                default:
315                    lfo2_internal_depth  = 0;
316                    pLFO2->ExtController = 0; // no external controller
317                    bLFO2Enabled         = false;
318            }
319            if (bLFO2Enabled) {
320                pLFO2->trigger(pRegion->LFO2Frequency,
321                               start_level_max,
322                               lfo2_internal_depth,
323                               pRegion->LFO2ControlDepth,
324                               pRegion->LFO2FlipPhase,
325                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
326                pLFO2->update(pLFO2->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO2->ExtController] : 0);
327            }
328      }      }
329    
330      void Voice::processResonanceEvent(RTList<Event>::Iterator& itEvent) {      void Voice::InitLFO3() {
331          // convert absolute controller value to differential          uint16_t lfo3_internal_depth;
332          const int ctrldelta = itEvent->Param.CC.Value - VCFResonanceCtrl.value;          switch (pRegion->LFO3Controller) {
333          VCFResonanceCtrl.value = itEvent->Param.CC.Value;              case ::gig::lfo3_ctrl_internal:
334          const float resonancedelta = (float) ctrldelta * 0.00787f; // 0.0..1.0                  lfo3_internal_depth  = pRegion->LFO3InternalDepth;
335          fFinalResonance += resonancedelta;                  pLFO3->ExtController = 0; // no external controller
336          // needed for initialization of parameter                  bLFO3Enabled         = (lfo3_internal_depth > 0);
337          VCFResonanceCtrl.fvalue = itEvent->Param.CC.Value * 0.00787f;                  break;
338      }              case ::gig::lfo3_ctrl_modwheel:
339                    lfo3_internal_depth  = 0;
340      /**                  pLFO3->ExtController = 1; // MIDI controller 1
341       *  Synthesizes the current audio fragment for this voice.                  bLFO3Enabled         = (pRegion->LFO3ControlDepth > 0);
342       *                  break;
343       *  @param Samples - number of sample points to be rendered in this audio              case ::gig::lfo3_ctrl_aftertouch:
344       *                   fragment cycle                  lfo3_internal_depth  = 0;
345       *  @param pSrc    - pointer to input sample data                  pLFO3->ExtController = CTRL_TABLE_IDX_AFTERTOUCH;
346       *  @param Skip    - number of sample points to skip in output buffer                  bLFO3Enabled         = true;
347       */                  break;
348      void Voice::Synthesize(uint Samples, sample_t* pSrc, uint Skip) {              case ::gig::lfo3_ctrl_internal_modwheel:
349          finalSynthesisParameters.pOutLeft  = &pEngineChannel->pOutputLeft[Skip];                  lfo3_internal_depth  = pRegion->LFO3InternalDepth;
350          finalSynthesisParameters.pOutRight = &pEngineChannel->pOutputRight[Skip];                  pLFO3->ExtController = 1; // MIDI controller 1
351          finalSynthesisParameters.pSrc      = pSrc;                  bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
352                    break;
353          RTList<Event>::Iterator itCCEvent = pEngineChannel->pEvents->first();              case ::gig::lfo3_ctrl_internal_aftertouch:
354          RTList<Event>::Iterator itNoteEvent = pEngineChannel->pMIDIKeyInfo[MIDIKey].pEvents->first();                  lfo3_internal_depth  = pRegion->LFO3InternalDepth;
355                    pLFO3->ExtController = CTRL_TABLE_IDX_AFTERTOUCH;
356          if (Skip) { // skip events that happened before this voice was triggered                  bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
357              while (itCCEvent && itCCEvent->FragmentPos() <= Skip) ++itCCEvent;                  break;
358              while (itNoteEvent && itNoteEvent->FragmentPos() <= Skip) ++itNoteEvent;              default:
359          }                  lfo3_internal_depth  = 0;
360                    pLFO3->ExtController = 0; // no external controller
361          uint killPos;                  bLFO3Enabled         = false;
362          if (itKillEvent) killPos = RTMath::Min(itKillEvent->FragmentPos(), pEngine->MaxFadeOutPos);          }
363            if (bLFO3Enabled) {
364          uint i = Skip;              pLFO3->trigger(pRegion->LFO3Frequency,
365          while (i < Samples) {                             start_level_mid,
366              int iSubFragmentEnd = RTMath::Min(i + CONFIG_DEFAULT_SUBFRAGMENT_SIZE, Samples);                             lfo3_internal_depth,
367                               pRegion->LFO3ControlDepth,
368              // initialize all final synthesis parameters                             false,
369              finalSynthesisParameters.fFinalPitch = PitchBase * PitchBend;                             pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
370              fFinalVolume    = getVolume();              pLFO3->update(pLFO3->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO3->ExtController] : 0);
371              fFinalCutoff    = VCFCutoffCtrl.fvalue;          }
372              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);  
   
             // if the voice was killed in this subfragment switch EG1 to fade out stage  
             if (itKillEvent && killPos <= iSubFragmentEnd) {  
                 EG1.enterFadeOutStage();  
                 itKillEvent = Pool<Event>::Iterator();  
             }  
373    
374              // process envelope generators      float Voice::CalculateCutoffBase(uint8_t MIDIKeyVelocity) {
375              switch (EG1.getSegmentType()) {          float cutoff = pRegion->GetVelocityCutoff(MIDIKeyVelocity);
376                  case EGADSR::segment_lin:          if (pRegion->VCFKeyboardTracking) {
377                      fFinalVolume *= EG1.processLin();              cutoff *= RTMath::CentsToFreqRatioUnlimited((MIDIKey() - pRegion->VCFKeyboardTrackingBreakpoint) * 100);
378                      break;          }
379                  case EGADSR::segment_exp:          return cutoff;
380                      fFinalVolume *= EG1.processExp();      }
381                      break;  
382                  case EGADSR::segment_end:      float Voice::CalculateFinalCutoff(float cutoffBase) {
383                      fFinalVolume *= EG1.getLevel();          int cvalue;
384                      break; // noop          if (VCFCutoffCtrl.controller) {
385              }              cvalue = GetGigEngineChannel()->ControllerTable[VCFCutoffCtrl.controller];
386              switch (EG2.getSegmentType()) {              if (pRegion->VCFCutoffControllerInvert) cvalue = 127 - cvalue;
387                  case EGADSR::segment_lin:              // VCFVelocityScale in this case means Minimum cutoff
388                      fFinalCutoff *= EG2.processLin();              if (cvalue < pRegion->VCFVelocityScale) cvalue = pRegion->VCFVelocityScale;
389                      break;          }
390                  case EGADSR::segment_exp:          else {
391                      fFinalCutoff *= EG2.processExp();              cvalue = pRegion->VCFCutoff;
392                      break;          }
393                  case EGADSR::segment_end:          float fco = cutoffBase * float(cvalue);
394                      fFinalCutoff *= EG2.getLevel();          if (fco > 127.0f) fco = 127.0f;
                     break; // noop  
             }  
             if (EG3.active()) finalSynthesisParameters.fFinalPitch *= EG3.render();  
395    
396              // process low frequency oscillators          return fco;
397              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 + 1.0, fFinalResonance, pEngine->SampleRate);  
                 finalSynthesisParameters.filterRight.SetParameters(fFinalCutoff + 1.0, fFinalResonance, pEngine->SampleRate);  
             }  
398    
399              // do we need resampling?      uint8_t Voice::GetVCFCutoffCtrl() {
400              const float __PLUS_ONE_CENT  = 1.000577789506554859250142541782224725466f;          uint8_t ctrl;
401              const float __MINUS_ONE_CENT = 0.9994225441413807496009516495583113737666f;          switch (pRegion->VCFCutoffController) {
402              const bool bResamplingRequired = !(finalSynthesisParameters.fFinalPitch <= __PLUS_ONE_CENT &&              case ::gig::vcf_cutoff_ctrl_modwheel:
403                                                 finalSynthesisParameters.fFinalPitch >= __MINUS_ONE_CENT);                  ctrl = 1;
404              SYNTHESIS_MODE_SET_INTERPOLATE(SynthesisMode, bResamplingRequired);                  break;
405                case ::gig::vcf_cutoff_ctrl_effect1:
406              // prepare final synthesis parameters structure                  ctrl = 12;
407              finalSynthesisParameters.uiToGo            = iSubFragmentEnd - i;                  break;
408  #ifdef CONFIG_INTERPOLATE_VOLUME              case ::gig::vcf_cutoff_ctrl_effect2:
409              finalSynthesisParameters.fFinalVolumeDeltaLeft  =                  ctrl = 13;
410                  (fFinalVolume * PanLeft - finalSynthesisParameters.fFinalVolumeLeft) / finalSynthesisParameters.uiToGo;                  break;
411              finalSynthesisParameters.fFinalVolumeDeltaRight =              case ::gig::vcf_cutoff_ctrl_breath:
412                  (fFinalVolume * PanRight - finalSynthesisParameters.fFinalVolumeRight) / finalSynthesisParameters.uiToGo;                  ctrl = 2;
413  #else                  break;
414              finalSynthesisParameters.fFinalVolumeLeft  = fFinalVolume * PanLeft;              case ::gig::vcf_cutoff_ctrl_foot:
415              finalSynthesisParameters.fFinalVolumeRight = fFinalVolume * PanRight;                  ctrl = 4;
416  #endif                  break;
417              // render audio for one subfragment              case ::gig::vcf_cutoff_ctrl_sustainpedal:
418              RunSynthesisFunction(SynthesisMode, &finalSynthesisParameters, &loop);                  ctrl = 64;
419                    break;
420              // stop the rendering if volume EG is finished              case ::gig::vcf_cutoff_ctrl_softpedal:
421              if (EG1.getSegmentType() == EGADSR::segment_end) break;                  ctrl = 67;
422                    break;
423              const double newPos = Pos + (iSubFragmentEnd - i) * finalSynthesisParameters.fFinalPitch;              case ::gig::vcf_cutoff_ctrl_genpurpose7:
424                    ctrl = 82;
425              // increment envelopes' positions                  break;
426              if (EG1.active()) {              case ::gig::vcf_cutoff_ctrl_genpurpose8:
427                    ctrl = 83;
428                  // 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;
429                  if (pSample->Loops && Pos <= pSample->LoopStart && pSample->LoopStart < newPos) {              case ::gig::vcf_cutoff_ctrl_aftertouch:
430                      EG1.update(EGADSR::event_hold_end, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);                  ctrl = CTRL_TABLE_IDX_AFTERTOUCH;
431                  }                  break;
432                case ::gig::vcf_cutoff_ctrl_none:
433                default:
434                    ctrl = 0;
435                    break;
436            }
437    
438                  EG1.increment(1);          return ctrl;
439                  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  
440    
441              Pos = newPos;      uint8_t Voice::GetVCFResonanceCtrl() {
442              i = iSubFragmentEnd;          uint8_t ctrl;
443            switch (pRegion->VCFResonanceController) {
444                case ::gig::vcf_res_ctrl_genpurpose3:
445                    ctrl = 18;
446                    break;
447                case ::gig::vcf_res_ctrl_genpurpose4:
448                    ctrl = 19;
449                    break;
450                case ::gig::vcf_res_ctrl_genpurpose5:
451                    ctrl = 80;
452                    break;
453                case ::gig::vcf_res_ctrl_genpurpose6:
454                    ctrl = 81;
455                    break;
456                case ::gig::vcf_res_ctrl_none:
457                default:
458                    ctrl = 0;
459          }          }
     }  
460    
461      /** @brief Update current portamento position.          return ctrl;
462       *      }
      * 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  
463    
464          if (itTriggerEvent && itKillEvent->FragmentPos() <= itTriggerEvent->FragmentPos()) return;      void Voice::TriggerEG1(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
465          this->itKillEvent = itKillEvent;          EG1.trigger(pRegion->EG1PreAttack,
466                        RTMath::Max(pRegion->EG1Attack, 0.0316) * egInfo.Attack,
467                        pRegion->EG1Hold,
468                        pRegion->EG1Decay1 * egInfo.Decay * velrelease,
469                        pRegion->EG1Decay2 * egInfo.Decay * velrelease,
470                        pRegion->EG1InfiniteSustain,
471                        pRegion->EG1Sustain,
472                        RTMath::Max(pRegion->EG1Release * velrelease, 0.014) * egInfo.Release,
473                        velocityAttenuation,
474                        sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
475        }
476    
477        void Voice::TriggerEG2(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
478            EG2.trigger(uint(RgnInfo.EG2PreAttack),
479                        RgnInfo.EG2Attack * egInfo.Attack,
480                        false,
481                        RgnInfo.EG2Decay1 * egInfo.Decay * velrelease,
482                        RgnInfo.EG2Decay2 * egInfo.Decay * velrelease,
483                        RgnInfo.EG2InfiniteSustain,
484                        uint(RgnInfo.EG2Sustain),
485                        RgnInfo.EG2Release * egInfo.Release * velrelease,
486                        velocityAttenuation,
487                        sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
488        }
489    
490        void Voice::ProcessGroupEvent(RTList<Event>::Iterator& itEvent) {
491            dmsg(4,("Voice %p processGroupEvents event type=%d", (void*)this, itEvent->Type));
492    
493            // TODO: The SustainPedal condition could be wrong, maybe the
494            // check should be if this Voice is in release stage or is a
495            // release sample instead. Need to test this in GSt.
496            // -- Andreas
497            //
498            // Commented sustain pedal check out. I don't think voices of the same
499            // note should be stopped at all, because it doesn't sound naturally
500            // with a drumkit.
501            // -- Christian, 2013-01-08
502            if (itEvent->Param.Note.Key != HostKey() /*||
503                !GetGigEngineChannel()->SustainPedal*/) {
504                dmsg(4,("Voice %p - kill", (void*)this));
505    
506                // kill the voice fast
507                pEG1->enterFadeOutStage();
508            }
509        }
510    
511        void Voice::CalculateFadeOutCoeff(float FadeOutTime, float SampleRate) {
512            EG1.CalculateFadeOutCoeff(FadeOutTime, SampleRate);
513        }
514    
515        int Voice::CalculatePan(uint8_t pan) {
516            int p;
517            // Gst behaviour: -64 and 63 are special cases
518            if (RgnInfo.Pan == -64)     p = pan * 2 - 127;
519            else if (RgnInfo.Pan == 63) p = pan * 2;
520            else                        p = pan + RgnInfo.Pan;
521    
522            if (p < 0) return 0;
523            if (p > 127) return 127;
524            return p;
525      }      }
526    
527  }} // namespace LinuxSampler::gig  }} // namespace LinuxSampler::gig
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