/[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 2175 by persson, Mon Apr 25 08:12:36 2011 UTC
# Line 3  Line 3 
3   *   LinuxSampler - modular, streaming capable sampler                     *   *   LinuxSampler - modular, streaming capable sampler                     *
4   *                                                                         *   *                                                                         *
5   *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *   *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *
6   *   Copyright (C) 2005, 2006 Christian Schoenebeck                        *   *   Copyright (C) 2005 - 2008 Christian Schoenebeck                       *
7     *   Copyright (C) 2009 - 2011 Christian Schoenebeck and Grigor Iliev      *
8   *                                                                         *   *                                                                         *
9   *   This program is free software; you can redistribute it and/or modify  *   *   This program is free software; you can redistribute it and/or modify  *
10   *   it under the terms of the GNU General Public License as published by  *   *   it under the terms of the GNU General Public License as published by  *
# Line 24  Line 25 
25  #include "../../common/Features.h"  #include "../../common/Features.h"
26  #include "Synthesizer.h"  #include "Synthesizer.h"
27  #include "Profiler.h"  #include "Profiler.h"
28    #include "Engine.h"
29    #include "EngineChannel.h"
30    
31  #include "Voice.h"  #include "Voice.h"
32    
33  namespace LinuxSampler { namespace gig {  namespace LinuxSampler { namespace gig {
34    
     const float Voice::FILTER_CUTOFF_COEFF(CalculateFilterCutoffCoeff());  
   
     float Voice::CalculateFilterCutoffCoeff() {  
         return log(CONFIG_FILTER_CUTOFF_MAX / CONFIG_FILTER_CUTOFF_MIN);  
     }  
   
35      Voice::Voice() {      Voice::Voice() {
36          pEngine     = NULL;          pEngine = NULL;
37          pDiskThread = NULL;          pEG1 = &EG1;
38          PlaybackState = playback_state_end;          pEG2 = &EG2;
         pLFO1 = new LFOUnsigned(1.0f);  // amplitude EG (0..1 range)  
         pLFO2 = new LFOUnsigned(1.0f);  // filter EG (0..1 range)  
         pLFO3 = new LFOSigned(1200.0f); // pitch EG (-1200..+1200 range)  
         KeyGroup = 0;  
         SynthesisMode = 0; // set all mode bits to 0 first  
         // select synthesis implementation (currently either pure C++ or MMX+SSE(1))  
         #if CONFIG_ASM && ARCH_X86  
         SYNTHESIS_MODE_SET_IMPLEMENTATION(SynthesisMode, Features::supportsMMX() && Features::supportsSSE());  
         #else  
         SYNTHESIS_MODE_SET_IMPLEMENTATION(SynthesisMode, false);  
         #endif  
         SYNTHESIS_MODE_SET_PROFILING(SynthesisMode, Profiler::isEnabled());  
   
         finalSynthesisParameters.filterLeft.Reset();  
         finalSynthesisParameters.filterRight.Reset();  
39      }      }
40    
41      Voice::~Voice() {      Voice::~Voice() {
         if (pLFO1) delete pLFO1;  
         if (pLFO2) delete pLFO2;  
         if (pLFO3) delete pLFO3;  
42      }      }
43    
44      void Voice::SetEngine(Engine* pEngine) {      EngineChannel* Voice::GetGigEngineChannel() {
45          this->pEngine     = pEngine;          return static_cast<EngineChannel*>(pEngineChannel);
46          this->pDiskThread = pEngine->pDiskThread;      }
47    
48        void Voice::SetEngine(LinuxSampler::Engine* pEngine) {
49            Engine* engine = static_cast<Engine*>(pEngine);
50            this->pEngine     = engine;
51            this->pDiskThread = engine->pDiskThread;
52          dmsg(6,("Voice::SetEngine()\n"));          dmsg(6,("Voice::SetEngine()\n"));
53      }      }
54    
55      /**      Voice::SampleInfo Voice::GetSampleInfo() {
56       *  Initializes and triggers the voice, a disk stream will be launched if          SampleInfo si;
57       *  needed.          si.SampleRate       = pSample->SamplesPerSecond;
58       *          si.ChannelCount     = pSample->Channels;
59       *  @param pEngineChannel - engine channel on which this voice was ordered          si.FrameSize        = pSample->FrameSize;
60       *  @param itNoteOnEvent  - event that caused triggering of this voice          si.BitDepth         = pSample->BitDepth;
61       *  @param PitchBend      - MIDI detune factor (-8192 ... +8191)          si.TotalFrameCount  = pSample->SamplesTotal;
      *  @param pDimRgn        - points to the dimension region which provides sample wave(s) and articulation data  
      *  @param VoiceType      - type of this voice  
      *  @param iKeyGroup      - a value > 0 defines a key group in which this voice is member of  
      *  @returns 0 on success, a value < 0 if the voice wasn't triggered  
      *           (either due to an error or e.g. because no region is  
      *           defined for the given key)  
      */  
     int Voice::Trigger(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent, int PitchBend, ::gig::DimensionRegion* pDimRgn, type_t VoiceType, int iKeyGroup) {  
         this->pEngineChannel = pEngineChannel;  
         this->pDimRgn        = pDimRgn;  
   
         #if CONFIG_DEVMODE  
         if (itNoteOnEvent->FragmentPos() > pEngine->MaxSamplesPerCycle) { // just a sanity check for debugging  
             dmsg(1,("Voice::Trigger(): ERROR, TriggerDelay > Totalsamples\n"));  
         }  
         #endif // CONFIG_DEVMODE  
   
         Type            = VoiceType;  
         MIDIKey         = itNoteOnEvent->Param.Note.Key;  
         PlaybackState   = playback_state_init; // mark voice as triggered, but no audio rendered yet  
         Delay           = itNoteOnEvent->FragmentPos();  
         itTriggerEvent  = itNoteOnEvent;  
         itKillEvent     = Pool<Event>::Iterator();  
         KeyGroup        = iKeyGroup;  
         pSample         = pDimRgn->pSample; // sample won't change until the voice is finished  
   
         // calculate volume  
         const double velocityAttenuation = pDimRgn->GetVelocityAttenuation(itNoteOnEvent->Param.Note.Velocity);  
   
         Volume = velocityAttenuation / 32768.0f; // we downscale by 32768 to convert from int16 value range to DSP value range (which is -1.0..1.0)  
   
         Volume *= pDimRgn->SampleAttenuation;  
   
         // the volume of release triggered samples depends on note length  
         if (Type == type_release_trigger) {  
             float noteLength = float(pEngine->FrameTime + Delay -  
                                      pEngineChannel->pMIDIKeyInfo[MIDIKey].NoteOnTime) / pEngine->SampleRate;  
             float attenuation = 1 - 0.01053 * (256 >> pDimRgn->ReleaseTriggerDecay) * noteLength;  
             if (attenuation <= 0) return -1;  
             Volume *= attenuation;  
         }  
62    
63          // select channel mode (mono or stereo)          si.HasLoops       = pRegion->SampleLoops;
64          SYNTHESIS_MODE_SET_CHANNELS(SynthesisMode, pSample->Channels == 2);          si.LoopStart      = (si.HasLoops) ? pRegion->pSampleLoops[0].LoopStart  : 0;
65            si.LoopLength     = (si.HasLoops) ? pRegion->pSampleLoops[0].LoopLength : 0;
66            si.LoopPlayCount  = pSample->LoopPlayCount;
67            si.Unpitched      = !pRegion->PitchTrack;
68    
69          // get starting crossfade volume level          return si;
70          switch (pDimRgn->AttenuationController.type) {      }
             case ::gig::attenuation_ctrl_t::type_channelaftertouch:  
                 CrossfadeVolume = 1.0f; //TODO: aftertouch not supported yet  
                 break;  
             case ::gig::attenuation_ctrl_t::type_velocity:  
                 CrossfadeVolume = CrossfadeAttenuation(itNoteOnEvent->Param.Note.Velocity);  
                 break;  
             case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate  
                 CrossfadeVolume = CrossfadeAttenuation(pEngineChannel->ControllerTable[pDimRgn->AttenuationController.controller_number]);  
                 break;  
             case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined  
             default:  
                 CrossfadeVolume = 1.0f;  
         }  
71    
72          PanLeft  = 1.0f - float(RTMath::Max(pDimRgn->Pan, 0)) /  63.0f;      Voice::RegionInfo Voice::GetRegionInfo() {
73          PanRight = 1.0f - float(RTMath::Min(pDimRgn->Pan, 0)) / -64.0f;          RegionInfo ri;
74            ri.UnityNote = pRegion->UnityNote;
75            ri.FineTune  = pRegion->FineTune;
76            ri.Pan       = pRegion->Pan;
77            ri.SampleStartOffset = pRegion->SampleStartOffset;
78    
79          finalSynthesisParameters.dPos = pDimRgn->SampleStartOffset; // offset where we should start playback of sample (0 - 2000 sample points)          ri.EG1PreAttack        = pRegion->EG1PreAttack;
80          Pos = pDimRgn->SampleStartOffset;          ri.EG1Attack           = pRegion->EG1Attack;
81            ri.EG1Hold             = pRegion->EG1Hold;
82            ri.EG1Decay1           = pRegion->EG1Decay1;
83            ri.EG1Decay2           = pRegion->EG1Decay2;
84            ri.EG1Sustain          = pRegion->EG1Sustain;
85            ri.EG1InfiniteSustain  = pRegion->EG1InfiniteSustain;
86            ri.EG1Release          = pRegion->EG1Release;
87    
88          // Check if the sample needs disk streaming or is too short for that          ri.EG2PreAttack        = pRegion->EG2PreAttack;
89          long cachedsamples = pSample->GetCache().Size / pSample->FrameSize;          ri.EG2Attack           = pRegion->EG2Attack;
90          DiskVoice          = cachedsamples < pSample->SamplesTotal;          ri.EG2Decay1           = pRegion->EG2Decay1;
91            ri.EG2Decay2           = pRegion->EG2Decay2;
92            ri.EG2Sustain          = pRegion->EG2Sustain;
93            ri.EG2InfiniteSustain  = pRegion->EG2InfiniteSustain;
94            ri.EG2Release          = pRegion->EG2Release;
95    
96          if (DiskVoice) { // voice to be streamed from disk          ri.EG3Attack     = pRegion->EG3Attack;
97              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;
98            ri.VCFEnabled    = pRegion->VCFEnabled;
99            ri.VCFType       = Filter::vcf_type_t(pRegion->VCFType);
100            ri.VCFResonance  = pRegion->VCFResonance;
101    
102              // 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);  
103    
104              if (pDiskThread->OrderNewStream(&DiskStreamRef, pSample, MaxRAMPos, !RAMLoop) < 0) {          return ri;
105                  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;  
106    
107              // calculate influence of EG1 controller on EG1's parameters      Voice::InstrumentInfo Voice::GetInstrumentInfo() {
108              // (eg1attack is different from the others)          InstrumentInfo ii;
109              double eg1attack  = (pDimRgn->EG1ControllerAttackInfluence)  ?          ii.FineTune = GetGigEngineChannel()->pInstrument->FineTune;
110                  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;  
111    
112              // calculate influence of EG2 controller on EG2's parameters          return ii;
113              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);  
         }  
114    
115        double Voice::GetSampleAttenuation() {
116            return pRegion->SampleAttenuation;
117        }
118    
119          // setup LFO 2 (VCF Cutoff LFO)      double Voice::GetVelocityAttenuation(uint8_t MIDIKeyVelocity) {
120          {          return pRegion->GetVelocityAttenuation(MIDIKeyVelocity);
121              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);  
         }  
122    
123        double Voice::GetVelocityRelease(uint8_t MIDIKeyVelocity) {
124            return pRegion->GetVelocityRelease(MIDIKeyVelocity);
125        }
126    
127          // setup LFO 3 (VCO LFO)      void Voice::ProcessCCEvent(RTList<Event>::Iterator& itEvent) {
128          {          if (itEvent->Type == Event::type_control_change && itEvent->Param.CC.Controller) { // if (valid) MIDI control change event
129              uint16_t lfo3_internal_depth;              if (pRegion->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&
130              switch (pDimRgn->LFO3Controller) {                  itEvent->Param.CC.Controller == pRegion->AttenuationController.controller_number) {
131                  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;  
132              }              }
             if (bLFO3Enabled) pLFO3->trigger(pDimRgn->LFO3Frequency,  
                                              start_level_mid,  
                                              lfo3_internal_depth,  
                                              pDimRgn->LFO3ControlDepth,  
                                              false,  
                                              pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
133          }          }
134        }
135    
136        void Voice::ProcessCutoffEvent(RTList<Event>::Iterator& itEvent) {
137            int ccvalue = itEvent->Param.CC.Value;
138            if (VCFCutoffCtrl.value == ccvalue) return;
139            VCFCutoffCtrl.value = ccvalue;
140            if (pRegion->VCFCutoffControllerInvert)  ccvalue = 127 - ccvalue;
141            if (ccvalue < pRegion->VCFVelocityScale) ccvalue = pRegion->VCFVelocityScale;
142            float cutoff = CutoffBase * float(ccvalue);
143            if (cutoff > 127.0f) cutoff = 127.0f;
144    
145          #if CONFIG_FORCE_FILTER          VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of fFinalCutoff next time
146          const bool bUseFilter = true;          fFinalCutoff = cutoff;
147          #else // use filter only if instrument file told so      }
         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;  
             }  
             #endif // CONFIG_OVERRIDE_RESONANCE_CTRL  
   
             #ifndef CONFIG_OVERRIDE_FILTER_TYPE  
             finalSynthesisParameters.filterLeft.SetType(pDimRgn->VCFType);  
             finalSynthesisParameters.filterRight.SetType(pDimRgn->VCFType);  
             #else // override filter type  
             FilterLeft.SetType(CONFIG_OVERRIDE_FILTER_TYPE);  
             FilterRight.SetType(CONFIG_OVERRIDE_FILTER_TYPE);  
             #endif // CONFIG_OVERRIDE_FILTER_TYPE  
   
             VCFCutoffCtrl.value    = pEngineChannel->ControllerTable[VCFCutoffCtrl.controller];  
             VCFResonanceCtrl.value = pEngineChannel->ControllerTable[VCFResonanceCtrl.controller];  
   
             // calculate cutoff frequency  
             float cutoff = pDimRgn->GetVelocityCutoff(itNoteOnEvent->Param.Note.Velocity);  
             if (pDimRgn->VCFKeyboardTracking) {  
                 cutoff *= exp((itNoteOnEvent->Param.Note.Key - pDimRgn->VCFKeyboardTrackingBreakpoint) * 0.057762265f); // (ln(2) / 12)  
             }  
             CutoffBase = cutoff;  
148    
149              int cvalue;      double Voice::CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity) {
150              if (VCFCutoffCtrl.controller) {          float crossfadeVolume;
151                  cvalue = pEngineChannel->ControllerTable[VCFCutoffCtrl.controller];          switch (pRegion->AttenuationController.type) {
152                  if (pDimRgn->VCFCutoffControllerInvert) cvalue = 127 - cvalue;              case ::gig::attenuation_ctrl_t::type_channelaftertouch:
153                  // VCFVelocityScale in this case means Minimum cutoff                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[128])];
154                  if (cvalue < pDimRgn->VCFVelocityScale) cvalue = pDimRgn->VCFVelocityScale;                  break;
155              }              case ::gig::attenuation_ctrl_t::type_velocity:
156              else {                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(MIDIKeyVelocity)];
157                  cvalue = pDimRgn->VCFCutoff;                  break;
158              }              case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate
159              cutoff *= float(cvalue) * 0.00787402f; // (1 / 127)                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[pRegion->AttenuationController.controller_number])];
160              if (cutoff > 1.0) cutoff = 1.0;                  break;
161              cutoff = (cutoff < 0.5 ? cutoff * 4826 - 1 : cutoff * 5715 - 449);              case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined
162              if (cutoff < 1.0) cutoff = 1.0;              default:
163                    crossfadeVolume = 1.0f;
164            }
165    
166              // calculate resonance          return crossfadeVolume;
167              float resonance = (float) (VCFResonanceCtrl.controller ? VCFResonanceCtrl.value : pDimRgn->VCFResonance) * 0.00787f; // 0.0..1.0      }
168    
169              VCFCutoffCtrl.fvalue    = cutoff - 1.0;      double Voice::GetEG1ControllerValue(uint8_t MIDIKeyVelocity) {
170              VCFResonanceCtrl.fvalue = resonance;          double eg1controllervalue = 0;
171          }          switch (pRegion->EG1Controller.type) {
172          else {              case ::gig::eg1_ctrl_t::type_none: // no controller defined
173              VCFCutoffCtrl.controller    = 0;                  eg1controllervalue = 0;
174              VCFResonanceCtrl.controller = 0;                  break;
175                case ::gig::eg1_ctrl_t::type_channelaftertouch:
176                    eg1controllervalue = GetGigEngineChannel()->ControllerTable[128];
177                    break;
178                case ::gig::eg1_ctrl_t::type_velocity:
179                    eg1controllervalue = MIDIKeyVelocity;
180                    break;
181                case ::gig::eg1_ctrl_t::type_controlchange: // MIDI control change controller
182                    eg1controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG1Controller.controller_number];
183                    break;
184          }          }
185            if (pRegion->EG1ControllerInvert) eg1controllervalue = 127 - eg1controllervalue;
186    
187          return 0; // success          return eg1controllervalue;
188      }      }
189    
190      /**      Voice::EGInfo Voice::CalculateEG1ControllerInfluence(double eg1ControllerValue) {
191       *  Renders the audio data for this voice for the current audio fragment.          EGInfo eg;
192       *  The sample input data can either come from RAM (cached sample or sample          // (eg1attack is different from the others)
193       *  part) or directly from disk. The output signal will be rendered by          eg.Attack  = (pRegion->EG1ControllerAttackInfluence)  ?
194       *  resampling / interpolation. If this voice is a disk streaming voice and              1 + 0.031 * (double) (pRegion->EG1ControllerAttackInfluence == 1 ?
195       *  the voice completely played back the cached RAM part of the sample, it                                    1 : 1 << pRegion->EG1ControllerAttackInfluence) * eg1ControllerValue : 1.0;
196       *  will automatically switch to disk playback for the next RenderAudio()          eg.Decay   = (pRegion->EG1ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerDecayInfluence)   * eg1ControllerValue : 1.0;
197       *  call.          eg.Release = (pRegion->EG1ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerReleaseInfluence) * eg1ControllerValue : 1.0;
198       *  
199       *  @param Samples - number of samples to be rendered in this audio fragment cycle          return eg;
      */  
     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);  
             }  
         }  
200      }      }
201    
202      /**      double Voice::GetEG2ControllerValue(uint8_t MIDIKeyVelocity) {
203       * Process given list of MIDI control change and pitch bend events for          double eg2controllervalue = 0;
204       * the given time.          switch (pRegion->EG2Controller.type) {
205       *              case ::gig::eg2_ctrl_t::type_none: // no controller defined
206       * @param itEvent - iterator pointing to the next event to be processed                  eg2controllervalue = 0;
207       * @param End     - youngest time stamp where processing should be stopped                  break;
208       */              case ::gig::eg2_ctrl_t::type_channelaftertouch:
209      void Voice::processCCEvents(RTList<Event>::Iterator& itEvent, uint End) {                  eg2controllervalue = GetGigEngineChannel()->ControllerTable[128];
210          for (; itEvent && itEvent->FragmentPos() <= End; ++itEvent) {                  break;
211              if (itEvent->Type == Event::type_control_change &&              case ::gig::eg2_ctrl_t::type_velocity:
212                  itEvent->Param.CC.Controller) { // if (valid) MIDI control change event                  eg2controllervalue = MIDIKeyVelocity;
213                  if (itEvent->Param.CC.Controller == VCFCutoffCtrl.controller) {                  break;
214                      processCutoffEvent(itEvent);              case ::gig::eg2_ctrl_t::type_controlchange: // MIDI control change controller
215                  }                  eg2controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG2Controller.controller_number];
216                  if (itEvent->Param.CC.Controller == VCFResonanceCtrl.controller) {                  break;
                     processResonanceEvent(itEvent);  
                 }  
                 if (itEvent->Param.CC.Controller == pLFO1->ExtController) {  
                     pLFO1->update(itEvent->Param.CC.Value);  
                 }  
                 if (itEvent->Param.CC.Controller == pLFO2->ExtController) {  
                     pLFO2->update(itEvent->Param.CC.Value);  
                 }  
                 if (itEvent->Param.CC.Controller == pLFO3->ExtController) {  
                     pLFO3->update(itEvent->Param.CC.Value);  
                 }  
                 if (pDimRgn->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&  
                     itEvent->Param.CC.Controller == pDimRgn->AttenuationController.controller_number) {  
                     processCrossFadeEvent(itEvent);  
                 }  
             } else if (itEvent->Type == Event::type_pitchbend) { // if pitch bend event  
                 processPitchEvent(itEvent);  
             }  
217          }          }
218      }          if (pRegion->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue;
219    
220      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;  
221      }      }
222    
223      void Voice::processCrossFadeEvent(RTList<Event>::Iterator& itEvent) {      Voice::EGInfo Voice::CalculateEG2ControllerInfluence(double eg2ControllerValue) {
224          CrossfadeVolume = CrossfadeAttenuation(itEvent->Param.CC.Value);          EGInfo eg;
225          fFinalVolume = getVolume();          eg.Attack  = (pRegion->EG2ControllerAttackInfluence)  ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerAttackInfluence)  * eg2ControllerValue : 1.0;
226      }          eg.Decay   = (pRegion->EG2ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerDecayInfluence)   * eg2ControllerValue : 1.0;
227            eg.Release = (pRegion->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerReleaseInfluence) * eg2ControllerValue : 1.0;
228    
229      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  
230      }      }
231    
232      void Voice::processCutoffEvent(RTList<Event>::Iterator& itEvent) {      void Voice::InitLFO1() {
233          int ccvalue = itEvent->Param.CC.Value;          uint16_t lfo1_internal_depth;
234          if (VCFCutoffCtrl.value == ccvalue) return;          switch (pRegion->LFO1Controller) {
235          VCFCutoffCtrl.value == ccvalue;              case ::gig::lfo1_ctrl_internal:
236          if (pDimRgn->VCFCutoffControllerInvert)  ccvalue = 127 - ccvalue;                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
237          if (ccvalue < pDimRgn->VCFVelocityScale) ccvalue = pDimRgn->VCFVelocityScale;                  pLFO1->ExtController = 0; // no external controller
238          float cutoff = CutoffBase * float(ccvalue) * 0.00787402f; // (1 / 127)                  bLFO1Enabled         = (lfo1_internal_depth > 0);
239          if (cutoff > 1.0) cutoff = 1.0;                  break;
240          cutoff = (cutoff < 0.5 ? cutoff * 4826 - 1 : cutoff * 5715 - 449);              case ::gig::lfo1_ctrl_modwheel:
241          if (cutoff < 1.0) cutoff = 1.0;                  lfo1_internal_depth  = 0;
242                    pLFO1->ExtController = 1; // MIDI controller 1
243                    bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
244                    break;
245                case ::gig::lfo1_ctrl_breath:
246                    lfo1_internal_depth  = 0;
247                    pLFO1->ExtController = 2; // MIDI controller 2
248                    bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
249                    break;
250                case ::gig::lfo1_ctrl_internal_modwheel:
251                    lfo1_internal_depth  = pRegion->LFO1InternalDepth;
252                    pLFO1->ExtController = 1; // MIDI controller 1
253                    bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
254                    break;
255                case ::gig::lfo1_ctrl_internal_breath:
256                    lfo1_internal_depth  = pRegion->LFO1InternalDepth;
257                    pLFO1->ExtController = 2; // MIDI controller 2
258                    bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
259                    break;
260                default:
261                    lfo1_internal_depth  = 0;
262                    pLFO1->ExtController = 0; // no external controller
263                    bLFO1Enabled         = false;
264            }
265            if (bLFO1Enabled) {
266                pLFO1->trigger(pRegion->LFO1Frequency,
267                               start_level_min,
268                               lfo1_internal_depth,
269                               pRegion->LFO1ControlDepth,
270                               pRegion->LFO1FlipPhase,
271                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
272                pLFO1->update(pLFO1->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO1->ExtController] : 0);
273            }
274        }
275    
276          VCFCutoffCtrl.fvalue = cutoff - 1.0; // needed for initialization of fFinalCutoff next time      void Voice::InitLFO2() {
277          fFinalCutoff = cutoff;          uint16_t lfo2_internal_depth;
278            switch (pRegion->LFO2Controller) {
279                case ::gig::lfo2_ctrl_internal:
280                    lfo2_internal_depth  = pRegion->LFO2InternalDepth;
281                    pLFO2->ExtController = 0; // no external controller
282                    bLFO2Enabled         = (lfo2_internal_depth > 0);
283                    break;
284                case ::gig::lfo2_ctrl_modwheel:
285                    lfo2_internal_depth  = 0;
286                    pLFO2->ExtController = 1; // MIDI controller 1
287                    bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
288                    break;
289                case ::gig::lfo2_ctrl_foot:
290                    lfo2_internal_depth  = 0;
291                    pLFO2->ExtController = 4; // MIDI controller 4
292                    bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
293                    break;
294                case ::gig::lfo2_ctrl_internal_modwheel:
295                    lfo2_internal_depth  = pRegion->LFO2InternalDepth;
296                    pLFO2->ExtController = 1; // MIDI controller 1
297                    bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
298                    break;
299                case ::gig::lfo2_ctrl_internal_foot:
300                    lfo2_internal_depth  = pRegion->LFO2InternalDepth;
301                    pLFO2->ExtController = 4; // MIDI controller 4
302                    bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
303                    break;
304                default:
305                    lfo2_internal_depth  = 0;
306                    pLFO2->ExtController = 0; // no external controller
307                    bLFO2Enabled         = false;
308            }
309            if (bLFO2Enabled) {
310                pLFO2->trigger(pRegion->LFO2Frequency,
311                               start_level_max,
312                               lfo2_internal_depth,
313                               pRegion->LFO2ControlDepth,
314                               pRegion->LFO2FlipPhase,
315                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
316                pLFO2->update(pLFO2->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO2->ExtController] : 0);
317            }
318      }      }
319    
320      void Voice::processResonanceEvent(RTList<Event>::Iterator& itEvent) {      void Voice::InitLFO3() {
321          // convert absolute controller value to differential          uint16_t lfo3_internal_depth;
322          const int ctrldelta = itEvent->Param.CC.Value - VCFResonanceCtrl.value;          switch (pRegion->LFO3Controller) {
323          VCFResonanceCtrl.value = itEvent->Param.CC.Value;              case ::gig::lfo3_ctrl_internal:
324          const float resonancedelta = (float) ctrldelta * 0.00787f; // 0.0..1.0                  lfo3_internal_depth  = pRegion->LFO3InternalDepth;
325          fFinalResonance += resonancedelta;                  pLFO3->ExtController = 0; // no external controller
326          // needed for initialization of parameter                  bLFO3Enabled         = (lfo3_internal_depth > 0);
327          VCFResonanceCtrl.fvalue = itEvent->Param.CC.Value * 0.00787f;                  break;
328      }              case ::gig::lfo3_ctrl_modwheel:
329                    lfo3_internal_depth  = 0;
330      /**                  pLFO3->ExtController = 1; // MIDI controller 1
331       *  Synthesizes the current audio fragment for this voice.                  bLFO3Enabled         = (pRegion->LFO3ControlDepth > 0);
332       *                  break;
333       *  @param Samples - number of sample points to be rendered in this audio              case ::gig::lfo3_ctrl_aftertouch:
334       *                   fragment cycle                  lfo3_internal_depth  = 0;
335       *  @param pSrc    - pointer to input sample data                  pLFO3->ExtController = 128;
336       *  @param Skip    - number of sample points to skip in output buffer                  bLFO3Enabled         = true;
337       */                  break;
338      void Voice::Synthesize(uint Samples, sample_t* pSrc, uint Skip) {              case ::gig::lfo3_ctrl_internal_modwheel:
339          finalSynthesisParameters.pOutLeft  = &pEngineChannel->pOutputLeft[Skip];                  lfo3_internal_depth  = pRegion->LFO3InternalDepth;
340          finalSynthesisParameters.pOutRight = &pEngineChannel->pOutputRight[Skip];                  pLFO3->ExtController = 1; // MIDI controller 1
341          finalSynthesisParameters.pSrc      = pSrc;                  bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
342                    break;
343          RTList<Event>::Iterator itCCEvent = pEngineChannel->pEvents->first();              case ::gig::lfo3_ctrl_internal_aftertouch:
344          RTList<Event>::Iterator itNoteEvent = pEngineChannel->pMIDIKeyInfo[MIDIKey].pEvents->first();                  lfo3_internal_depth  = pRegion->LFO3InternalDepth;
345                    pLFO3->ExtController = 128;
346          if (Skip) { // skip events that happened before this voice was triggered                  bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
347              while (itCCEvent && itCCEvent->FragmentPos() <= Skip) ++itCCEvent;                  break;
348              while (itNoteEvent && itNoteEvent->FragmentPos() <= Skip) ++itNoteEvent;              default:
349          }                  lfo3_internal_depth  = 0;
350                    pLFO3->ExtController = 0; // no external controller
351          uint killPos;                  bLFO3Enabled         = false;
352          if (itKillEvent) killPos = RTMath::Min(itKillEvent->FragmentPos(), pEngine->MaxFadeOutPos);          }
353            if (bLFO3Enabled) {
354          uint i = Skip;              pLFO3->trigger(pRegion->LFO3Frequency,
355          while (i < Samples) {                             start_level_mid,
356              int iSubFragmentEnd = RTMath::Min(i + CONFIG_DEFAULT_SUBFRAGMENT_SIZE, Samples);                             lfo3_internal_depth,
357                               pRegion->LFO3ControlDepth,
358              // initialize all final synthesis parameters                             false,
359              finalSynthesisParameters.fFinalPitch = PitchBase * PitchBend;                             pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
360              fFinalVolume    = getVolume();              pLFO3->update(pLFO3->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO3->ExtController] : 0);
361              fFinalCutoff    = VCFCutoffCtrl.fvalue;          }
362              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();  
             }  
363    
364              // process envelope generators      float Voice::CalculateCutoffBase(uint8_t MIDIKeyVelocity) {
365              switch (EG1.getSegmentType()) {          float cutoff = pRegion->GetVelocityCutoff(MIDIKeyVelocity);
366                  case EGADSR::segment_lin:          if (pRegion->VCFKeyboardTracking) {
367                      fFinalVolume *= EG1.processLin();              cutoff *= RTMath::CentsToFreqRatioUnlimited((MIDIKey - pRegion->VCFKeyboardTrackingBreakpoint) * 100);
368                      break;          }
369                  case EGADSR::segment_exp:          return cutoff;
370                      fFinalVolume *= EG1.processExp();      }
371                      break;  
372                  case EGADSR::segment_end:      float Voice::CalculateFinalCutoff(float cutoffBase) {
373                      fFinalVolume *= EG1.getLevel();          int cvalue;
374                      break; // noop          if (VCFCutoffCtrl.controller) {
375              }              cvalue = GetGigEngineChannel()->ControllerTable[VCFCutoffCtrl.controller];
376              switch (EG2.getSegmentType()) {              if (pRegion->VCFCutoffControllerInvert) cvalue = 127 - cvalue;
377                  case EGADSR::segment_lin:              // VCFVelocityScale in this case means Minimum cutoff
378                      fFinalCutoff *= EG2.processLin();              if (cvalue < pRegion->VCFVelocityScale) cvalue = pRegion->VCFVelocityScale;
379                      break;          }
380                  case EGADSR::segment_exp:          else {
381                      fFinalCutoff *= EG2.processExp();              cvalue = pRegion->VCFCutoff;
382                      break;          }
383                  case EGADSR::segment_end:          float fco = cutoffBase * float(cvalue);
384                      fFinalCutoff *= EG2.getLevel();          if (fco > 127.0f) fco = 127.0f;
                     break; // noop  
             }  
             if (EG3.active()) finalSynthesisParameters.fFinalPitch *= EG3.render();  
385    
386              // process low frequency oscillators          return fco;
387              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);  
             }  
388    
389              // do we need resampling?      uint8_t Voice::GetVCFCutoffCtrl() {
390              const float __PLUS_ONE_CENT  = 1.000577789506554859250142541782224725466f;          uint8_t ctrl;
391              const float __MINUS_ONE_CENT = 0.9994225441413807496009516495583113737666f;          switch (pRegion->VCFCutoffController) {
392              const bool bResamplingRequired = !(finalSynthesisParameters.fFinalPitch <= __PLUS_ONE_CENT &&              case ::gig::vcf_cutoff_ctrl_modwheel:
393                                                 finalSynthesisParameters.fFinalPitch >= __MINUS_ONE_CENT);                  ctrl = 1;
394              SYNTHESIS_MODE_SET_INTERPOLATE(SynthesisMode, bResamplingRequired);                  break;
395                case ::gig::vcf_cutoff_ctrl_effect1:
396              // prepare final synthesis parameters structure                  ctrl = 12;
397              finalSynthesisParameters.uiToGo            = iSubFragmentEnd - i;                  break;
398  #ifdef CONFIG_INTERPOLATE_VOLUME              case ::gig::vcf_cutoff_ctrl_effect2:
399              finalSynthesisParameters.fFinalVolumeDeltaLeft  =                  ctrl = 13;
400                  (fFinalVolume * PanLeft - finalSynthesisParameters.fFinalVolumeLeft) / finalSynthesisParameters.uiToGo;                  break;
401              finalSynthesisParameters.fFinalVolumeDeltaRight =              case ::gig::vcf_cutoff_ctrl_breath:
402                  (fFinalVolume * PanRight - finalSynthesisParameters.fFinalVolumeRight) / finalSynthesisParameters.uiToGo;                  ctrl = 2;
403  #else                  break;
404              finalSynthesisParameters.fFinalVolumeLeft  = fFinalVolume * PanLeft;              case ::gig::vcf_cutoff_ctrl_foot:
405              finalSynthesisParameters.fFinalVolumeRight = fFinalVolume * PanRight;                  ctrl = 4;
406  #endif                  break;
407              // render audio for one subfragment              case ::gig::vcf_cutoff_ctrl_sustainpedal:
408              RunSynthesisFunction(SynthesisMode, &finalSynthesisParameters, &loop);                  ctrl = 64;
409                    break;
410              // stop the rendering if volume EG is finished              case ::gig::vcf_cutoff_ctrl_softpedal:
411              if (EG1.getSegmentType() == EGADSR::segment_end) break;                  ctrl = 67;
412                    break;
413              const double newPos = Pos + (iSubFragmentEnd - i) * finalSynthesisParameters.fFinalPitch;              case ::gig::vcf_cutoff_ctrl_genpurpose7:
414                    ctrl = 82;
415              // increment envelopes' positions                  break;
416              if (EG1.active()) {              case ::gig::vcf_cutoff_ctrl_genpurpose8:
417                    ctrl = 83;
418                  // 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;
419                  if (pSample->Loops && Pos <= pSample->LoopStart && pSample->LoopStart < newPos) {              case ::gig::vcf_cutoff_ctrl_aftertouch:
420                      EG1.update(EGADSR::event_hold_end, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);                  ctrl = 128;
421                  }                  break;
422                case ::gig::vcf_cutoff_ctrl_none:
423                default:
424                    ctrl = 0;
425                    break;
426            }
427    
428                  EG1.increment(1);          return ctrl;
429                  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  
430    
431              Pos = newPos;      uint8_t Voice::GetVCFResonanceCtrl() {
432              i = iSubFragmentEnd;          uint8_t ctrl;
433            switch (pRegion->VCFResonanceController) {
434                case ::gig::vcf_res_ctrl_genpurpose3:
435                    ctrl = 18;
436                    break;
437                case ::gig::vcf_res_ctrl_genpurpose4:
438                    ctrl = 19;
439                    break;
440                case ::gig::vcf_res_ctrl_genpurpose5:
441                    ctrl = 80;
442                    break;
443                case ::gig::vcf_res_ctrl_genpurpose6:
444                    ctrl = 81;
445                    break;
446                case ::gig::vcf_res_ctrl_none:
447                default:
448                    ctrl = 0;
449          }          }
450    
451            return ctrl;
452      }      }
453    
454      /** @brief Update current portamento position.      void Voice::TriggerEG1(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
455       *          EG1.trigger(uint(RgnInfo.EG1PreAttack),
456       * Will be called when portamento mode is enabled to get the final                      RgnInfo.EG1Attack * egInfo.Attack,
457       * portamento position of this active voice from where the next voice(s)                      RgnInfo.EG1Hold,
458       * might continue to slide on.                      RgnInfo.EG1Decay1 * egInfo.Decay * velrelease,
459       *                      RgnInfo.EG1Decay2 * egInfo.Decay * velrelease,
460       * @param itNoteOffEvent - event which causes this voice to die soon                      RgnInfo.EG1InfiniteSustain,
461       */                      uint(RgnInfo.EG1Sustain),
462      void Voice::UpdatePortamentoPos(Pool<Event>::Iterator& itNoteOffEvent) {                      RgnInfo.EG1Release * egInfo.Release * velrelease,
463          const float fFinalEG3Level = EG3.level(itNoteOffEvent->FragmentPos());                      velocityAttenuation,
464          pEngineChannel->PortamentoPos = (float) MIDIKey + RTMath::FreqRatioToCents(fFinalEG3Level) * 0.01f;                      sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
465      }      }
466    
467      /**      void Voice::TriggerEG2(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
468       *  Immediately kill the voice. This method should not be used to kill          EG2.trigger(uint(RgnInfo.EG2PreAttack),
469       *  a normal, active voice, because it doesn't take care of things like                      RgnInfo.EG2Attack * egInfo.Attack,
470       *  fading down the volume level to avoid clicks and regular processing                      false,
471       *  until the kill event actually occured!                      RgnInfo.EG2Decay1 * egInfo.Decay * velrelease,
472       *                      RgnInfo.EG2Decay2 * egInfo.Decay * velrelease,
473       *  @see Kill()                      RgnInfo.EG2InfiniteSustain,
474       */                      uint(RgnInfo.EG2Sustain),
475      void Voice::KillImmediately() {                      RgnInfo.EG2Release * egInfo.Release * velrelease,
476          if (DiskVoice && DiskStreamRef.State != Stream::state_unused) {                      velocityAttenuation,
477              pDiskThread->OrderDeletionOfStream(&DiskStreamRef);                      sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
478          }      }
479          Reset();  
480      }      void Voice::ProcessGroupEvent(RTList<Event>::Iterator& itEvent) {
481            dmsg(4,("Voice %x processGroupEvents event type=%d", this, itEvent->Type));
482      /**  
483       *  Kill the voice in regular sense. Let the voice render audio until          // TODO: The SustainPedal condition could be wrong, maybe the
484       *  the kill event actually occured and then fade down the volume level          // check should be if this Voice is in release stage or is a
485       *  very quickly and let the voice die finally. Unlike a normal release          // release sample instead. Need to test this in GSt.
486       *  of a voice, a kill process cannot be cancalled and is therefore          if (itEvent->Param.Note.Key != MIDIKey ||
487       *  usually used for voice stealing and key group conflicts.              !GetGigEngineChannel()->SustainPedal) {
488       *              dmsg(4,("Voice %x - kill", this));
      *  @param itKillEvent - event which caused the voice to be killed  
      */  
     void Voice::Kill(Pool<Event>::Iterator& itKillEvent) {  
         #if CONFIG_DEVMODE  
         if (!itKillEvent) dmsg(1,("gig::Voice::Kill(): ERROR, !itKillEvent !!!\n"));  
         if (itKillEvent && !itKillEvent.isValid()) dmsg(1,("gig::Voice::Kill(): ERROR, itKillEvent invalid !!!\n"));  
         #endif // CONFIG_DEVMODE  
489    
490          if (itTriggerEvent && itKillEvent->FragmentPos() <= itTriggerEvent->FragmentPos()) return;              // kill the voice fast
491          this->itKillEvent = itKillEvent;              pEG1->enterFadeOutStage();
492            }
493      }      }
494    
495  }} // namespace LinuxSampler::gig  }} // namespace LinuxSampler::gig
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