/[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 2012 by iliev, Fri Oct 23 17:53:17 2009 UTC revision 2203 by persson, Sat Jul 9 16:44:27 2011 UTC
# Line 3  Line 3 
3   *   LinuxSampler - modular, streaming capable sampler                     *   *   LinuxSampler - modular, streaming capable sampler                     *
4   *                                                                         *   *                                                                         *
5   *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *   *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *
6   *   Copyright (C) 2005 - 2009 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 32  Line 33 
33  namespace LinuxSampler { namespace gig {  namespace LinuxSampler { namespace gig {
34    
35      Voice::Voice() {      Voice::Voice() {
36          pEngine     = NULL;          pEngine = NULL;
37          pDiskThread = NULL;          pEG1 = &EG1;
38          PlaybackState = playback_state_end;          pEG2 = &EG2;
         pLFO1 = new LFOUnsigned(1.0f);  // amplitude EG (0..1 range)  
         pLFO2 = new LFOUnsigned(1.0f);  // filter EG (0..1 range)  
         pLFO3 = new LFOSigned(1200.0f); // pitch EG (-1200..+1200 range)  
         KeyGroup = 0;  
         SynthesisMode = 0; // set all mode bits to 0 first  
         // select synthesis implementation (asm core is not supported ATM)  
         #if 0 // 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() {
42          if (pLFO1) delete pLFO1;      }
43          if (pLFO2) delete pLFO2;  
44          if (pLFO3) delete pLFO3;      EngineChannel* Voice::GetGigEngineChannel() {
45            return static_cast<EngineChannel*>(pEngineChannel);
46      }      }
47    
48      void Voice::SetEngine(LinuxSampler::Engine* pEngine) {      void Voice::SetEngine(LinuxSampler::Engine* pEngine) {
# Line 65  namespace LinuxSampler { namespace gig { Line 52  namespace LinuxSampler { namespace gig {
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;  
         Orphan = false;  
   
         #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);  
   
         // For 16 bit samples, we downscale by 32768 to convert from  
         // int16 value range to DSP value range (which is  
         // -1.0..1.0). For 24 bit, we downscale from int32.  
         float volume = velocityAttenuation / (pSample->BitDepth == 16 ? 32768.0f : 32768.0f * 65536.0f);  
   
         volume *= pDimRgn->SampleAttenuation * pEngineChannel->GlobalVolume * GLOBAL_VOLUME;  
   
         // the volume of release triggered samples depends on note length  
         if (Type == type_release_trigger) {  
             float noteLength = float(pEngine->FrameTime + Delay -  
                                      pEngineChannel->pMIDIKeyInfo[MIDIKey].NoteOnTime) / pEngine->SampleRate;  
             float attenuation = 1 - 0.01053 * (256 >> pDimRgn->ReleaseTriggerDecay) * noteLength;  
             if (attenuation <= 0) return -1;  
             volume *= attenuation;  
         }  
   
         // select channel mode (mono or stereo)  
         SYNTHESIS_MODE_SET_CHANNELS(SynthesisMode, pSample->Channels == 2);  
         // select bit depth (16 or 24)  
         SYNTHESIS_MODE_SET_BITDEPTH24(SynthesisMode, pSample->BitDepth == 24);  
62    
63          // get starting crossfade volume level          si.HasLoops       = pRegion->SampleLoops;
64          float crossfadeVolume;          si.LoopStart      = (si.HasLoops) ? pRegion->pSampleLoops[0].LoopStart  : 0;
65          switch (pDimRgn->AttenuationController.type) {          si.LoopLength     = (si.HasLoops) ? pRegion->pSampleLoops[0].LoopLength : 0;
66              case ::gig::attenuation_ctrl_t::type_channelaftertouch:          si.LoopPlayCount  = pSample->LoopPlayCount;
67                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(pEngineChannel->ControllerTable[128])];          si.Unpitched      = !pRegion->PitchTrack;
                 break;  
             case ::gig::attenuation_ctrl_t::type_velocity:  
                 crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(itNoteOnEvent->Param.Note.Velocity)];  
                 break;  
             case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate  
                 crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(pEngineChannel->ControllerTable[pDimRgn->AttenuationController.controller_number])];  
                 break;  
             case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined  
             default:  
                 crossfadeVolume = 1.0f;  
         }  
68    
69          VolumeLeft  = volume * Engine::PanCurve[64 - pDimRgn->Pan];          return si;
70          VolumeRight = volume * Engine::PanCurve[64 + pDimRgn->Pan];      }
71    
72          float subfragmentRate = pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE;      Voice::RegionInfo Voice::GetRegionInfo() {
73          CrossfadeSmoother.trigger(crossfadeVolume, subfragmentRate);          RegionInfo ri;
74          VolumeSmoother.trigger(pEngineChannel->MidiVolume, subfragmentRate);          ri.UnityNote = pRegion->UnityNote;
75          PanLeftSmoother.trigger(pEngineChannel->GlobalPanLeft, subfragmentRate);          ri.FineTune  = pRegion->FineTune;
76          PanRightSmoother.trigger(pEngineChannel->GlobalPanRight, subfragmentRate);          ri.Pan       = pRegion->Pan;
77            ri.SampleStartOffset = pRegion->SampleStartOffset;
         finalSynthesisParameters.dPos = pDimRgn->SampleStartOffset; // offset where we should start playback of sample (0 - 2000 sample points)  
         Pos = pDimRgn->SampleStartOffset;  
   
         // Check if the sample needs disk streaming or is too short for that  
         long cachedsamples = pSample->GetCache().Size / pSample->FrameSize;  
         DiskVoice          = cachedsamples < pSample->SamplesTotal;  
   
         const DLS::sample_loop_t& loopinfo = pDimRgn->pSampleLoops[0];  
   
         if (DiskVoice) { // voice to be streamed from disk  
             if (cachedsamples > (pEngine->MaxSamplesPerCycle << CONFIG_MAX_PITCH)) {  
                 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)  
             } else {  
                 // The cache is too small to fit a max sample buffer.  
                 // Setting MaxRAMPos to 0 will probably cause a click  
                 // in the audio, but it's better than not handling  
                 // this case at all, which would have caused the  
                 // unsigned MaxRAMPos to be set to a negative number.  
                 MaxRAMPos = 0;  
             }  
78    
79              // check if there's a loop defined which completely fits into the cached (RAM) part of the sample          ri.EG2PreAttack        = pRegion->EG2PreAttack;
80              RAMLoop = (pDimRgn->SampleLoops && (loopinfo.LoopStart + loopinfo.LoopLength) <= MaxRAMPos);          ri.EG2Attack           = pRegion->EG2Attack;
81            ri.EG2Decay1           = pRegion->EG2Decay1;
82            ri.EG2Decay2           = pRegion->EG2Decay2;
83            ri.EG2Sustain          = pRegion->EG2Sustain;
84            ri.EG2InfiniteSustain  = pRegion->EG2InfiniteSustain;
85            ri.EG2Release          = pRegion->EG2Release;
86    
87              if (pDiskThread->OrderNewStream(&DiskStreamRef, pDimRgn, MaxRAMPos, !RAMLoop) < 0) {          ri.EG3Attack     = pRegion->EG3Attack;
88                  dmsg(1,("Disk stream order failed!\n"));          ri.EG3Depth      = pRegion->EG3Depth;
89                  KillImmediately();          ri.VCFEnabled    = pRegion->VCFEnabled;
90                  return -1;          ri.VCFType       = Filter::vcf_type_t(pRegion->VCFType);
91              }          ri.VCFResonance  = pRegion->VCFResonance;
             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 = (pDimRgn->SampleLoops != 0);  
             dmsg(4,("RAM only voice launched (Looping: %s)\n", (RAMLoop) ? "yes" : "no"));  
         }  
         if (RAMLoop) {  
             loop.uiTotalCycles = pSample->LoopPlayCount;  
             loop.uiCyclesLeft  = pSample->LoopPlayCount;  
             loop.uiStart       = loopinfo.LoopStart;  
             loop.uiEnd         = loopinfo.LoopStart + loopinfo.LoopLength;  
             loop.uiSize        = loopinfo.LoopLength;  
         }  
   
         // calculate initial pitch value  
         {  
             double pitchbasecents = pEngineChannel->pInstrument->FineTune + pDimRgn->FineTune + pEngine->ScaleTuning[MIDIKey % 12];  
   
             // GSt behaviour: maximum transpose up is 40 semitones. If  
             // MIDI key is more than 40 semitones above unity note,  
             // the transpose is not done.  
             if (pDimRgn->PitchTrack && (MIDIKey - (int) pDimRgn->UnityNote) < 40) pitchbasecents += (MIDIKey - (int) pDimRgn->UnityNote) * 100;  
   
             this->PitchBase = RTMath::CentsToFreqRatioUnlimited(pitchbasecents) * (double(pSample->SamplesPerSecond) / double(pEngine->SampleRate));  
             this->PitchBendRange = 1.0 / 8192.0 * 100.0 * pEngineChannel->pInstrument->PitchbendRange;  
             this->PitchBend = RTMath::CentsToFreqRatio(PitchBend * PitchBendRange);  
         }  
   
         // the length of the decay and release curves are dependent on the velocity  
         const double velrelease = 1 / pDimRgn->GetVelocityRelease(itNoteOnEvent->Param.Note.Velocity);  
   
         // setup EG 1 (VCA EG)  
         {  
             // get current value of EG1 controller  
             double eg1controllervalue;  
             switch (pDimRgn->EG1Controller.type) {  
                 case ::gig::eg1_ctrl_t::type_none: // no controller defined  
                     eg1controllervalue = 0;  
                     break;  
                 case ::gig::eg1_ctrl_t::type_channelaftertouch:  
                     eg1controllervalue = pEngineChannel->ControllerTable[128];  
                     break;  
                 case ::gig::eg1_ctrl_t::type_velocity:  
                     eg1controllervalue = itNoteOnEvent->Param.Note.Velocity;  
                     break;  
                 case ::gig::eg1_ctrl_t::type_controlchange: // MIDI control change controller  
                     eg1controllervalue = pEngineChannel->ControllerTable[pDimRgn->EG1Controller.controller_number];  
                     break;  
             }  
             if (pDimRgn->EG1ControllerInvert) eg1controllervalue = 127 - eg1controllervalue;  
92    
93              // calculate influence of EG1 controller on EG1's parameters          ri.ReleaseTriggerDecay = 0.01053 * (256 >> pRegion->ReleaseTriggerDecay);
             // (eg1attack is different from the others)  
             double eg1attack  = (pDimRgn->EG1ControllerAttackInfluence)  ?  
                 1 + 0.031 * (double) (pDimRgn->EG1ControllerAttackInfluence == 1 ?  
                                       1 : 1 << pDimRgn->EG1ControllerAttackInfluence) * eg1controllervalue : 1.0;  
             double eg1decay   = (pDimRgn->EG1ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pDimRgn->EG1ControllerDecayInfluence)   * eg1controllervalue : 1.0;  
             double eg1release = (pDimRgn->EG1ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pDimRgn->EG1ControllerReleaseInfluence) * eg1controllervalue : 1.0;  
   
             EG1.trigger(pDimRgn->EG1PreAttack,  
                         pDimRgn->EG1Attack * eg1attack,  
                         pDimRgn->EG1Hold,  
                         pDimRgn->EG1Decay1 * eg1decay * velrelease,  
                         pDimRgn->EG1Decay2 * eg1decay * velrelease,  
                         pDimRgn->EG1InfiniteSustain,  
                         pDimRgn->EG1Sustain,  
                         pDimRgn->EG1Release * eg1release * velrelease,  
                         velocityAttenuation,  
                         pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
         }  
   
 #ifdef CONFIG_INTERPOLATE_VOLUME  
         // setup initial volume in synthesis parameters  
 #ifdef CONFIG_PROCESS_MUTED_CHANNELS  
         if (pEngineChannel->GetMute()) {  
             finalSynthesisParameters.fFinalVolumeLeft  = 0;  
             finalSynthesisParameters.fFinalVolumeRight = 0;  
         }  
         else  
 #else  
         {  
             float finalVolume = pEngineChannel->MidiVolume * crossfadeVolume * EG1.getLevel();  
   
             finalSynthesisParameters.fFinalVolumeLeft  = finalVolume * VolumeLeft  * pEngineChannel->GlobalPanLeft;  
             finalSynthesisParameters.fFinalVolumeRight = finalVolume * VolumeRight * pEngineChannel->GlobalPanRight;  
         }  
 #endif  
 #endif  
   
         // setup EG 2 (VCF Cutoff EG)  
         {  
             // get current value of EG2 controller  
             double eg2controllervalue;  
             switch (pDimRgn->EG2Controller.type) {  
                 case ::gig::eg2_ctrl_t::type_none: // no controller defined  
                     eg2controllervalue = 0;  
                     break;  
                 case ::gig::eg2_ctrl_t::type_channelaftertouch:  
                     eg2controllervalue = pEngineChannel->ControllerTable[128];  
                     break;  
                 case ::gig::eg2_ctrl_t::type_velocity:  
                     eg2controllervalue = itNoteOnEvent->Param.Note.Velocity;  
                     break;  
                 case ::gig::eg2_ctrl_t::type_controlchange: // MIDI control change controller  
                     eg2controllervalue = pEngineChannel->ControllerTable[pDimRgn->EG2Controller.controller_number];  
                     break;  
             }  
             if (pDimRgn->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue;  
94    
95              // calculate influence of EG2 controller on EG2's parameters          return ri;
96              double eg2attack  = (pDimRgn->EG2ControllerAttackInfluence)  ? 1 + 0.00775 * (double) (1 << pDimRgn->EG2ControllerAttackInfluence)  * eg2controllervalue : 1.0;      }
             double eg2decay   = (pDimRgn->EG2ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pDimRgn->EG2ControllerDecayInfluence)   * eg2controllervalue : 1.0;  
             double eg2release = (pDimRgn->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pDimRgn->EG2ControllerReleaseInfluence) * eg2controllervalue : 1.0;  
   
             EG2.trigger(pDimRgn->EG2PreAttack,  
                         pDimRgn->EG2Attack * eg2attack,  
                         false,  
                         pDimRgn->EG2Decay1 * eg2decay * velrelease,  
                         pDimRgn->EG2Decay2 * eg2decay * velrelease,  
                         pDimRgn->EG2InfiniteSustain,  
                         pDimRgn->EG2Sustain,  
                         pDimRgn->EG2Release * eg2release * velrelease,  
                         velocityAttenuation,  
                         pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
         }  
   
   
         // setup EG 3 (VCO EG)  
         {  
             // if portamento mode is on, we dedicate EG3 purely for portamento, otherwise if portamento is off we do as told by the patch  
             bool  bPortamento = pEngineChannel->PortamentoMode && pEngineChannel->PortamentoPos >= 0.0f;  
             float eg3depth = (bPortamento)  
                                  ? RTMath::CentsToFreqRatio((pEngineChannel->PortamentoPos - (float) MIDIKey) * 100)  
                                  : RTMath::CentsToFreqRatio(pDimRgn->EG3Depth);  
             float eg3time = (bPortamento)  
                                 ? pEngineChannel->PortamentoTime  
                                 : pDimRgn->EG3Attack;  
             EG3.trigger(eg3depth, eg3time, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
             dmsg(5,("PortamentoPos=%f, depth=%f, time=%f\n", pEngineChannel->PortamentoPos, eg3depth, eg3time));  
         }  
   
   
         // setup LFO 1 (VCA LFO)  
         {  
             uint16_t lfo1_internal_depth;  
             switch (pDimRgn->LFO1Controller) {  
                 case ::gig::lfo1_ctrl_internal:  
                     lfo1_internal_depth  = pDimRgn->LFO1InternalDepth;  
                     pLFO1->ExtController = 0; // no external controller  
                     bLFO1Enabled         = (lfo1_internal_depth > 0);  
                     break;  
                 case ::gig::lfo1_ctrl_modwheel:  
                     lfo1_internal_depth  = 0;  
                     pLFO1->ExtController = 1; // MIDI controller 1  
                     bLFO1Enabled         = (pDimRgn->LFO1ControlDepth > 0);  
                     break;  
                 case ::gig::lfo1_ctrl_breath:  
                     lfo1_internal_depth  = 0;  
                     pLFO1->ExtController = 2; // MIDI controller 2  
                     bLFO1Enabled         = (pDimRgn->LFO1ControlDepth > 0);  
                     break;  
                 case ::gig::lfo1_ctrl_internal_modwheel:  
                     lfo1_internal_depth  = pDimRgn->LFO1InternalDepth;  
                     pLFO1->ExtController = 1; // MIDI controller 1  
                     bLFO1Enabled         = (lfo1_internal_depth > 0 || pDimRgn->LFO1ControlDepth > 0);  
                     break;  
                 case ::gig::lfo1_ctrl_internal_breath:  
                     lfo1_internal_depth  = pDimRgn->LFO1InternalDepth;  
                     pLFO1->ExtController = 2; // MIDI controller 2  
                     bLFO1Enabled         = (lfo1_internal_depth > 0 || pDimRgn->LFO1ControlDepth > 0);  
                     break;  
                 default:  
                     lfo1_internal_depth  = 0;  
                     pLFO1->ExtController = 0; // no external controller  
                     bLFO1Enabled         = false;  
             }  
             if (bLFO1Enabled) {  
                 pLFO1->trigger(pDimRgn->LFO1Frequency,  
                                start_level_min,  
                                lfo1_internal_depth,  
                                pDimRgn->LFO1ControlDepth,  
                                pDimRgn->LFO1FlipPhase,  
                                pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
                 pLFO1->update(pLFO1->ExtController ? pEngineChannel->ControllerTable[pLFO1->ExtController] : 0);  
             }  
         }  
97    
98        Voice::InstrumentInfo Voice::GetInstrumentInfo() {
99            InstrumentInfo ii;
100            ii.FineTune = GetGigEngineChannel()->pInstrument->FineTune;
101            ii.PitchbendRange = GetGigEngineChannel()->pInstrument->PitchbendRange;
102    
103          // setup LFO 2 (VCF Cutoff LFO)          return ii;
104          {      }
             uint16_t lfo2_internal_depth;  
             switch (pDimRgn->LFO2Controller) {  
                 case ::gig::lfo2_ctrl_internal:  
                     lfo2_internal_depth  = pDimRgn->LFO2InternalDepth;  
                     pLFO2->ExtController = 0; // no external controller  
                     bLFO2Enabled         = (lfo2_internal_depth > 0);  
                     break;  
                 case ::gig::lfo2_ctrl_modwheel:  
                     lfo2_internal_depth  = 0;  
                     pLFO2->ExtController = 1; // MIDI controller 1  
                     bLFO2Enabled         = (pDimRgn->LFO2ControlDepth > 0);  
                     break;  
                 case ::gig::lfo2_ctrl_foot:  
                     lfo2_internal_depth  = 0;  
                     pLFO2->ExtController = 4; // MIDI controller 4  
                     bLFO2Enabled         = (pDimRgn->LFO2ControlDepth > 0);  
                     break;  
                 case ::gig::lfo2_ctrl_internal_modwheel:  
                     lfo2_internal_depth  = pDimRgn->LFO2InternalDepth;  
                     pLFO2->ExtController = 1; // MIDI controller 1  
                     bLFO2Enabled         = (lfo2_internal_depth > 0 || pDimRgn->LFO2ControlDepth > 0);  
                     break;  
                 case ::gig::lfo2_ctrl_internal_foot:  
                     lfo2_internal_depth  = pDimRgn->LFO2InternalDepth;  
                     pLFO2->ExtController = 4; // MIDI controller 4  
                     bLFO2Enabled         = (lfo2_internal_depth > 0 || pDimRgn->LFO2ControlDepth > 0);  
                     break;  
                 default:  
                     lfo2_internal_depth  = 0;  
                     pLFO2->ExtController = 0; // no external controller  
                     bLFO2Enabled         = false;  
             }  
             if (bLFO2Enabled) {  
                 pLFO2->trigger(pDimRgn->LFO2Frequency,  
                                start_level_max,  
                                lfo2_internal_depth,  
                                pDimRgn->LFO2ControlDepth,  
                                pDimRgn->LFO2FlipPhase,  
                                pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
                 pLFO2->update(pLFO2->ExtController ? pEngineChannel->ControllerTable[pLFO2->ExtController] : 0);  
             }  
         }  
105    
106        double Voice::GetSampleAttenuation() {
107            return pRegion->SampleAttenuation;
108        }
109    
110          // setup LFO 3 (VCO LFO)      double Voice::GetVelocityAttenuation(uint8_t MIDIKeyVelocity) {
111          {          return pRegion->GetVelocityAttenuation(MIDIKeyVelocity);
112              uint16_t lfo3_internal_depth;      }
             switch (pDimRgn->LFO3Controller) {  
                 case ::gig::lfo3_ctrl_internal:  
                     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 = 128;  
                     bLFO3Enabled         = true;  
                     break;  
                 case ::gig::lfo3_ctrl_internal_modwheel:  
                     lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;  
                     pLFO3->ExtController = 1; // MIDI controller 1  
                     bLFO3Enabled         = (lfo3_internal_depth > 0 || pDimRgn->LFO3ControlDepth > 0);  
                     break;  
                 case ::gig::lfo3_ctrl_internal_aftertouch:  
                     lfo3_internal_depth  = pDimRgn->LFO3InternalDepth;  
                     pLFO1->ExtController = 128;  
                     bLFO3Enabled         = (lfo3_internal_depth > 0 || pDimRgn->LFO3ControlDepth > 0);  
                     break;  
                 default:  
                     lfo3_internal_depth  = 0;  
                     pLFO3->ExtController = 0; // no external controller  
                     bLFO3Enabled         = false;  
             }  
             if (bLFO3Enabled) {  
                 pLFO3->trigger(pDimRgn->LFO3Frequency,  
                                start_level_mid,  
                                lfo3_internal_depth,  
                                pDimRgn->LFO3ControlDepth,  
                                false,  
                                pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
                 pLFO3->update(pLFO3->ExtController ? pEngineChannel->ControllerTable[pLFO3->ExtController] : 0);  
             }  
         }  
113    
114        double Voice::GetVelocityRelease(uint8_t MIDIKeyVelocity) {
115            return pRegion->GetVelocityRelease(MIDIKeyVelocity);
116        }
117    
118          #if CONFIG_FORCE_FILTER      void Voice::ProcessCCEvent(RTList<Event>::Iterator& itEvent) {
119          const bool bUseFilter = true;          if (itEvent->Type == Event::type_control_change && itEvent->Param.CC.Controller) { // if (valid) MIDI control change event
120          #else // use filter only if instrument file told so              if (pRegion->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&
121          const bool bUseFilter = pDimRgn->VCFEnabled;                  itEvent->Param.CC.Controller == pRegion->AttenuationController.controller_number) {
122          #endif // CONFIG_FORCE_FILTER                  CrossfadeSmoother.update(AbstractEngine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.CC.Value)]);
         SYNTHESIS_MODE_SET_FILTER(SynthesisMode, bUseFilter);  
         if (bUseFilter) {  
             #ifdef CONFIG_OVERRIDE_CUTOFF_CTRL  
             VCFCutoffCtrl.controller = CONFIG_OVERRIDE_CUTOFF_CTRL;  
             #else // use the one defined in the instrument file  
             switch (pDimRgn->VCFCutoffController) {  
                 case ::gig::vcf_cutoff_ctrl_modwheel:  
                     VCFCutoffCtrl.controller = 1;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_effect1:  
                     VCFCutoffCtrl.controller = 12;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_effect2:  
                     VCFCutoffCtrl.controller = 13;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_breath:  
                     VCFCutoffCtrl.controller = 2;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_foot:  
                     VCFCutoffCtrl.controller = 4;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_sustainpedal:  
                     VCFCutoffCtrl.controller = 64;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_softpedal:  
                     VCFCutoffCtrl.controller = 67;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_genpurpose7:  
                     VCFCutoffCtrl.controller = 82;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_genpurpose8:  
                     VCFCutoffCtrl.controller = 83;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_aftertouch:  
                     VCFCutoffCtrl.controller = 128;  
                     break;  
                 case ::gig::vcf_cutoff_ctrl_none:  
                 default:  
                     VCFCutoffCtrl.controller = 0;  
                     break;  
123              }              }
124              #endif // CONFIG_OVERRIDE_CUTOFF_CTRL          }
125        }
126    
127              #ifdef CONFIG_OVERRIDE_RESONANCE_CTRL      void Voice::ProcessCutoffEvent(RTList<Event>::Iterator& itEvent) {
128              VCFResonanceCtrl.controller = CONFIG_OVERRIDE_RESONANCE_CTRL;          int ccvalue = itEvent->Param.CC.Value;
129              #else // use the one defined in the instrument file          if (VCFCutoffCtrl.value == ccvalue) return;
130              switch (pDimRgn->VCFResonanceController) {          VCFCutoffCtrl.value = ccvalue;
131                  case ::gig::vcf_res_ctrl_genpurpose3:          if (pRegion->VCFCutoffControllerInvert)  ccvalue = 127 - ccvalue;
132                      VCFResonanceCtrl.controller = 18;          if (ccvalue < pRegion->VCFVelocityScale) ccvalue = pRegion->VCFVelocityScale;
133                      break;          float cutoff = CutoffBase * float(ccvalue);
134                  case ::gig::vcf_res_ctrl_genpurpose4:          if (cutoff > 127.0f) cutoff = 127.0f;
                     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  
135    
136              #ifndef CONFIG_OVERRIDE_FILTER_TYPE          VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of fFinalCutoff next time
137              finalSynthesisParameters.filterLeft.SetType(pDimRgn->VCFType);          fFinalCutoff = cutoff;
138              finalSynthesisParameters.filterRight.SetType(pDimRgn->VCFType);      }
             #else // override filter type  
             finalSynthesisParameters.filterLeft.SetType(CONFIG_OVERRIDE_FILTER_TYPE);  
             finalSynthesisParameters.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;      double Voice::CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity) {
141              if (VCFCutoffCtrl.controller) {          float crossfadeVolume;
142                  cvalue = pEngineChannel->ControllerTable[VCFCutoffCtrl.controller];          switch (pRegion->AttenuationController.type) {
143                  if (pDimRgn->VCFCutoffControllerInvert) cvalue = 127 - cvalue;              case ::gig::attenuation_ctrl_t::type_channelaftertouch:
144                  // VCFVelocityScale in this case means Minimum cutoff                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[128])];
145                  if (cvalue < pDimRgn->VCFVelocityScale) cvalue = pDimRgn->VCFVelocityScale;                  break;
146              }              case ::gig::attenuation_ctrl_t::type_velocity:
147              else {                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(MIDIKeyVelocity)];
148                  cvalue = pDimRgn->VCFCutoff;                  break;
149              }              case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate
150              cutoff *= float(cvalue);                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetGigEngineChannel()->ControllerTable[pRegion->AttenuationController.controller_number])];
151              if (cutoff > 127.0f) cutoff = 127.0f;                  break;
152                case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined
153                default:
154                    crossfadeVolume = 1.0f;
155            }
156    
157              // calculate resonance          return crossfadeVolume;
158              float resonance = (float) (VCFResonanceCtrl.controller ? VCFResonanceCtrl.value : pDimRgn->VCFResonance);      }
159    
160              VCFCutoffCtrl.fvalue    = cutoff;      double Voice::GetEG1ControllerValue(uint8_t MIDIKeyVelocity) {
161              VCFResonanceCtrl.fvalue = resonance;          double eg1controllervalue = 0;
162          }          switch (pRegion->EG1Controller.type) {
163          else {              case ::gig::eg1_ctrl_t::type_none: // no controller defined
164              VCFCutoffCtrl.controller    = 0;                  eg1controllervalue = 0;
165              VCFResonanceCtrl.controller = 0;                  break;
166                case ::gig::eg1_ctrl_t::type_channelaftertouch:
167                    eg1controllervalue = GetGigEngineChannel()->ControllerTable[128];
168                    break;
169                case ::gig::eg1_ctrl_t::type_velocity:
170                    eg1controllervalue = MIDIKeyVelocity;
171                    break;
172                case ::gig::eg1_ctrl_t::type_controlchange: // MIDI control change controller
173                    eg1controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG1Controller.controller_number];
174                    break;
175          }          }
176            if (pRegion->EG1ControllerInvert) eg1controllervalue = 127 - eg1controllervalue;
177    
178          return 0; // success          return eg1controllervalue;
179      }      }
180    
181      /**      Voice::EGInfo Voice::CalculateEG1ControllerInfluence(double eg1ControllerValue) {
182       *  Renders the audio data for this voice for the current audio fragment.          EGInfo eg;
183       *  The sample input data can either come from RAM (cached sample or sample          // (eg1attack is different from the others)
184       *  part) or directly from disk. The output signal will be rendered by          eg.Attack  = (pRegion->EG1ControllerAttackInfluence)  ?
185       *  resampling / interpolation. If this voice is a disk streaming voice and              1 + 0.031 * (double) (pRegion->EG1ControllerAttackInfluence == 1 ?
186       *  the voice completely played back the cached RAM part of the sample, it                                    1 : 1 << pRegion->EG1ControllerAttackInfluence) * eg1ControllerValue : 1.0;
187       *  will automatically switch to disk playback for the next RenderAudio()          eg.Decay   = (pRegion->EG1ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerDecayInfluence)   * eg1ControllerValue : 1.0;
188       *  call.          eg.Release = (pRegion->EG1ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerReleaseInfluence) * eg1ControllerValue : 1.0;
189       *  
190       *  @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 = (sample_t*)DiskStreamRef.pStream->GetReadPtr(); // get the current read_ptr within the ringbuffer where we read the samples from  
   
                     // render current audio fragment  
                     Synthesize(Samples, ptr, Delay);  
   
                     const int iPos = (int) finalSynthesisParameters.dPos;  
                     const int readSampleWords = iPos * pSample->Channels; // amount of sample words actually been read  
                     DiskStreamRef.pStream->IncrementReadPos(readSampleWords);  
                     finalSynthesisParameters.dPos -= iPos; // just keep fractional part of playback position  
   
                     // change state of voice to 'end' if we really reached the end of the sample data  
                     if (RealSampleWordsLeftToRead >= 0) {  
                         RealSampleWordsLeftToRead -= readSampleWords;  
                         if (RealSampleWordsLeftToRead <= 0) this->PlaybackState = playback_state_end;  
                     }  
                 }  
                 break;  
   
             case playback_state_end:  
                 std::cerr << "gig::Voice::Render(): entered with playback_state_end, this is a bug!\n" << std::flush;  
                 break;  
         }  
   
         // Reset delay  
         Delay = 0;  
   
         itTriggerEvent = Pool<Event>::Iterator();  
   
         // If sample stream or release stage finished, kill the voice  
         if (PlaybackState == playback_state_end || EG1.getSegmentType() == EGADSR::segment_end) KillImmediately();  
     }  
   
     /**  
      *  Resets voice variables. Should only be called if rendering process is  
      *  suspended / not running.  
      */  
     void Voice::Reset() {  
         finalSynthesisParameters.filterLeft.Reset();  
         finalSynthesisParameters.filterRight.Reset();  
         DiskStreamRef.pStream = NULL;  
         DiskStreamRef.hStream = 0;  
         DiskStreamRef.State   = Stream::state_unused;  
         DiskStreamRef.OrderID = 0;  
         PlaybackState = playback_state_end;  
         itTriggerEvent = Pool<Event>::Iterator();  
         itKillEvent    = Pool<Event>::Iterator();  
     }  
   
     /**  
      * Process given list of MIDI note on, note off and sustain pedal events  
      * for the given time.  
      *  
      * @param itEvent - iterator pointing to the next event to be processed  
      * @param End     - youngest time stamp where processing should be stopped  
      */  
     void Voice::processTransitionEvents(RTList<Event>::Iterator& itEvent, uint End) {  
         for (; itEvent && itEvent->FragmentPos() <= End; ++itEvent) {  
             if (itEvent->Type == Event::type_release) {  
                 EG1.update(EGADSR::event_release, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
                 EG2.update(EGADSR::event_release, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
             } else if (itEvent->Type == Event::type_cancel_release) {  
                 EG1.update(EGADSR::event_cancel_release, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
                 EG2.update(EGADSR::event_cancel_release, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
             }  
         }  
191      }      }
192    
193      /**      double Voice::GetEG2ControllerValue(uint8_t MIDIKeyVelocity) {
194       * Process given list of MIDI control change and pitch bend events for          double eg2controllervalue = 0;
195       * the given time.          switch (pRegion->EG2Controller.type) {
196       *              case ::gig::eg2_ctrl_t::type_none: // no controller defined
197       * @param itEvent - iterator pointing to the next event to be processed                  eg2controllervalue = 0;
198       * @param End     - youngest time stamp where processing should be stopped                  break;
199       */              case ::gig::eg2_ctrl_t::type_channelaftertouch:
200      void Voice::processCCEvents(RTList<Event>::Iterator& itEvent, uint End) {                  eg2controllervalue = GetGigEngineChannel()->ControllerTable[128];
201          for (; itEvent && itEvent->FragmentPos() <= End; ++itEvent) {                  break;
202              if (itEvent->Type == Event::type_control_change &&              case ::gig::eg2_ctrl_t::type_velocity:
203                  itEvent->Param.CC.Controller) { // if (valid) MIDI control change event                  eg2controllervalue = MIDIKeyVelocity;
204                  if (itEvent->Param.CC.Controller == VCFCutoffCtrl.controller) {                  break;
205                      processCutoffEvent(itEvent);              case ::gig::eg2_ctrl_t::type_controlchange: // MIDI control change controller
206                  }                  eg2controllervalue = GetGigEngineChannel()->ControllerTable[pRegion->EG2Controller.controller_number];
207                  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) {  
                     CrossfadeSmoother.update(Engine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.CC.Value)]);  
                 }  
                 if (itEvent->Param.CC.Controller == 7) { // volume  
                     VolumeSmoother.update(Engine::VolumeCurve[itEvent->Param.CC.Value]);  
                 } else if (itEvent->Param.CC.Controller == 10) { // panpot  
                     PanLeftSmoother.update(Engine::PanCurve[128 - itEvent->Param.CC.Value]);  
                     PanRightSmoother.update(Engine::PanCurve[itEvent->Param.CC.Value]);  
                 }  
             } else if (itEvent->Type == Event::type_pitchbend) { // if pitch bend event  
                 processPitchEvent(itEvent);  
             }  
208          }          }
209      }          if (pRegion->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue;
210    
211      void Voice::processPitchEvent(RTList<Event>::Iterator& itEvent) {          return eg2controllervalue;
         PitchBend = RTMath::CentsToFreqRatio(itEvent->Param.Pitch.Pitch * PitchBendRange);  
212      }      }
213    
214      void Voice::processCutoffEvent(RTList<Event>::Iterator& itEvent) {      Voice::EGInfo Voice::CalculateEG2ControllerInfluence(double eg2ControllerValue) {
215          int ccvalue = itEvent->Param.CC.Value;          EGInfo eg;
216          if (VCFCutoffCtrl.value == ccvalue) return;          eg.Attack  = (pRegion->EG2ControllerAttackInfluence)  ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerAttackInfluence)  * eg2ControllerValue : 1.0;
217          VCFCutoffCtrl.value == ccvalue;          eg.Decay   = (pRegion->EG2ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerDecayInfluence)   * eg2ControllerValue : 1.0;
218          if (pDimRgn->VCFCutoffControllerInvert)  ccvalue = 127 - ccvalue;          eg.Release = (pRegion->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerReleaseInfluence) * eg2ControllerValue : 1.0;
         if (ccvalue < pDimRgn->VCFVelocityScale) ccvalue = pDimRgn->VCFVelocityScale;  
         float cutoff = CutoffBase * float(ccvalue);  
         if (cutoff > 127.0f) cutoff = 127.0f;  
219    
220          VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of fFinalCutoff next time          return eg;
         fFinalCutoff = cutoff;  
221      }      }
222    
223      void Voice::processResonanceEvent(RTList<Event>::Iterator& itEvent) {      void Voice::InitLFO1() {
224          // convert absolute controller value to differential          uint16_t lfo1_internal_depth;
225          const int ctrldelta = itEvent->Param.CC.Value - VCFResonanceCtrl.value;          switch (pRegion->LFO1Controller) {
226          VCFResonanceCtrl.value = itEvent->Param.CC.Value;              case ::gig::lfo1_ctrl_internal:
227          const float resonancedelta = (float) ctrldelta;                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
228          fFinalResonance += resonancedelta;                  pLFO1->ExtController = 0; // no external controller
229          // needed for initialization of parameter                  bLFO1Enabled         = (lfo1_internal_depth > 0);
230          VCFResonanceCtrl.fvalue = itEvent->Param.CC.Value;                  break;
231      }              case ::gig::lfo1_ctrl_modwheel:
232                    lfo1_internal_depth  = 0;
233      /**                  pLFO1->ExtController = 1; // MIDI controller 1
234       *  Synthesizes the current audio fragment for this voice.                  bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
235       *                  break;
236       *  @param Samples - number of sample points to be rendered in this audio              case ::gig::lfo1_ctrl_breath:
237       *                   fragment cycle                  lfo1_internal_depth  = 0;
238       *  @param pSrc    - pointer to input sample data                  pLFO1->ExtController = 2; // MIDI controller 2
239       *  @param Skip    - number of sample points to skip in output buffer                  bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);
240       */                  break;
241      void Voice::Synthesize(uint Samples, sample_t* pSrc, uint Skip) {              case ::gig::lfo1_ctrl_internal_modwheel:
242          finalSynthesisParameters.pOutLeft  = &pEngineChannel->pChannelLeft->Buffer()[Skip];                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
243          finalSynthesisParameters.pOutRight = &pEngineChannel->pChannelRight->Buffer()[Skip];                  pLFO1->ExtController = 1; // MIDI controller 1
244          finalSynthesisParameters.pSrc      = pSrc;                  bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
245                    break;
246          RTList<Event>::Iterator itCCEvent = pEngineChannel->pEvents->first();              case ::gig::lfo1_ctrl_internal_breath:
247          RTList<Event>::Iterator itNoteEvent = pEngineChannel->pMIDIKeyInfo[MIDIKey].pEvents->first();                  lfo1_internal_depth  = pRegion->LFO1InternalDepth;
248                    pLFO1->ExtController = 2; // MIDI controller 2
249          if (itTriggerEvent) { // skip events that happened before this voice was triggered                  bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);
250              while (itCCEvent && itCCEvent->FragmentPos() <= Skip) ++itCCEvent;                  break;
251              // we can't simply compare the timestamp here, because note events              default:
252              // might happen on the same time stamp, so we have to deal on the                  lfo1_internal_depth  = 0;
253              // actual sequence the note events arrived instead (see bug #112)                  pLFO1->ExtController = 0; // no external controller
254              for (; itNoteEvent; ++itNoteEvent) {                  bLFO1Enabled         = false;
255                  if (itTriggerEvent == itNoteEvent) {          }
256                      ++itNoteEvent;          if (bLFO1Enabled) {
257                      break;              pLFO1->trigger(pRegion->LFO1Frequency,
258                  }                             start_level_min,
259              }                             lfo1_internal_depth,
260                               pRegion->LFO1ControlDepth,
261                               pRegion->LFO1FlipPhase,
262                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
263                pLFO1->update(pLFO1->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO1->ExtController] : 0);
264          }          }
265        }
266    
267          uint killPos;      void Voice::InitLFO2() {
268          if (itKillEvent) {          uint16_t lfo2_internal_depth;
269              int maxFadeOutPos = Samples - pEngine->MinFadeOutSamples;          switch (pRegion->LFO2Controller) {
270              if (maxFadeOutPos < 0) {              case ::gig::lfo2_ctrl_internal:
271                  // There's not enough space in buffer to do a fade out                  lfo2_internal_depth  = pRegion->LFO2InternalDepth;
272                  // from max volume (this can only happen for audio                  pLFO2->ExtController = 0; // no external controller
273                  // drivers that use Samples < MaxSamplesPerCycle).                  bLFO2Enabled         = (lfo2_internal_depth > 0);
274                  // End the EG1 here, at pos 0, with a shorter max fade                  break;
275                  // out time.              case ::gig::lfo2_ctrl_modwheel:
276                  EG1.enterFadeOutStage(Samples / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);                  lfo2_internal_depth  = 0;
277                  itKillEvent = Pool<Event>::Iterator();                  pLFO2->ExtController = 1; // MIDI controller 1
278              } else {                  bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
279                  killPos = RTMath::Min(itKillEvent->FragmentPos(), maxFadeOutPos);                  break;
280              }              case ::gig::lfo2_ctrl_foot:
281                    lfo2_internal_depth  = 0;
282                    pLFO2->ExtController = 4; // MIDI controller 4
283                    bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);
284                    break;
285                case ::gig::lfo2_ctrl_internal_modwheel:
286                    lfo2_internal_depth  = pRegion->LFO2InternalDepth;
287                    pLFO2->ExtController = 1; // MIDI controller 1
288                    bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
289                    break;
290                case ::gig::lfo2_ctrl_internal_foot:
291                    lfo2_internal_depth  = pRegion->LFO2InternalDepth;
292                    pLFO2->ExtController = 4; // MIDI controller 4
293                    bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);
294                    break;
295                default:
296                    lfo2_internal_depth  = 0;
297                    pLFO2->ExtController = 0; // no external controller
298                    bLFO2Enabled         = false;
299            }
300            if (bLFO2Enabled) {
301                pLFO2->trigger(pRegion->LFO2Frequency,
302                               start_level_max,
303                               lfo2_internal_depth,
304                               pRegion->LFO2ControlDepth,
305                               pRegion->LFO2FlipPhase,
306                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
307                pLFO2->update(pLFO2->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO2->ExtController] : 0);
308          }          }
309        }
310    
311          uint i = Skip;      void Voice::InitLFO3() {
312          while (i < Samples) {          uint16_t lfo3_internal_depth;
313              int iSubFragmentEnd = RTMath::Min(i + CONFIG_DEFAULT_SUBFRAGMENT_SIZE, Samples);          switch (pRegion->LFO3Controller) {
314                case ::gig::lfo3_ctrl_internal:
315              // initialize all final synthesis parameters                  lfo3_internal_depth  = pRegion->LFO3InternalDepth;
316              fFinalCutoff    = VCFCutoffCtrl.fvalue;                  pLFO3->ExtController = 0; // no external controller
317              fFinalResonance = VCFResonanceCtrl.fvalue;                  bLFO3Enabled         = (lfo3_internal_depth > 0);
318                    break;
319              // process MIDI control change and pitchbend events for this subfragment              case ::gig::lfo3_ctrl_modwheel:
320              processCCEvents(itCCEvent, iSubFragmentEnd);                  lfo3_internal_depth  = 0;
321                    pLFO3->ExtController = 1; // MIDI controller 1
322              finalSynthesisParameters.fFinalPitch = PitchBase * PitchBend;                  bLFO3Enabled         = (pRegion->LFO3ControlDepth > 0);
323              float fFinalVolume = VolumeSmoother.render() * CrossfadeSmoother.render();                  break;
324  #ifdef CONFIG_PROCESS_MUTED_CHANNELS              case ::gig::lfo3_ctrl_aftertouch:
325              if (pEngineChannel->GetMute()) fFinalVolume = 0;                  lfo3_internal_depth  = 0;
326  #endif                  pLFO3->ExtController = 128;
327                    bLFO3Enabled         = true;
328              // process transition events (note on, note off & sustain pedal)                  break;
329              processTransitionEvents(itNoteEvent, iSubFragmentEnd);              case ::gig::lfo3_ctrl_internal_modwheel:
330                    lfo3_internal_depth  = pRegion->LFO3InternalDepth;
331              // if the voice was killed in this subfragment, or if the                  pLFO3->ExtController = 1; // MIDI controller 1
332              // filter EG is finished, switch EG1 to fade out stage                  bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
333              if ((itKillEvent && killPos <= iSubFragmentEnd) ||                  break;
334                  (SYNTHESIS_MODE_GET_FILTER(SynthesisMode) &&              case ::gig::lfo3_ctrl_internal_aftertouch:
335                   EG2.getSegmentType() == EGADSR::segment_end)) {                  lfo3_internal_depth  = pRegion->LFO3InternalDepth;
336                  EG1.enterFadeOutStage();                  pLFO3->ExtController = 128;
337                  itKillEvent = Pool<Event>::Iterator();                  bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);
338              }                  break;
339                default:
340                    lfo3_internal_depth  = 0;
341                    pLFO3->ExtController = 0; // no external controller
342                    bLFO3Enabled         = false;
343            }
344            if (bLFO3Enabled) {
345                pLFO3->trigger(pRegion->LFO3Frequency,
346                               start_level_mid,
347                               lfo3_internal_depth,
348                               pRegion->LFO3ControlDepth,
349                               false,
350                               pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
351                pLFO3->update(pLFO3->ExtController ? GetGigEngineChannel()->ControllerTable[pLFO3->ExtController] : 0);
352            }
353        }
354    
355              // process envelope generators      float Voice::CalculateCutoffBase(uint8_t MIDIKeyVelocity) {
356              switch (EG1.getSegmentType()) {          float cutoff = pRegion->GetVelocityCutoff(MIDIKeyVelocity);
357                  case EGADSR::segment_lin:          if (pRegion->VCFKeyboardTracking) {
358                      fFinalVolume *= EG1.processLin();              cutoff *= RTMath::CentsToFreqRatioUnlimited((MIDIKey - pRegion->VCFKeyboardTrackingBreakpoint) * 100);
359                      break;          }
360                  case EGADSR::segment_exp:          return cutoff;
361                      fFinalVolume *= EG1.processExp();      }
362                      break;  
363                  case EGADSR::segment_end:      float Voice::CalculateFinalCutoff(float cutoffBase) {
364                      fFinalVolume *= EG1.getLevel();          int cvalue;
365                      break; // noop          if (VCFCutoffCtrl.controller) {
366              }              cvalue = GetGigEngineChannel()->ControllerTable[VCFCutoffCtrl.controller];
367              switch (EG2.getSegmentType()) {              if (pRegion->VCFCutoffControllerInvert) cvalue = 127 - cvalue;
368                  case EGADSR::segment_lin:              // VCFVelocityScale in this case means Minimum cutoff
369                      fFinalCutoff *= EG2.processLin();              if (cvalue < pRegion->VCFVelocityScale) cvalue = pRegion->VCFVelocityScale;
370                      break;          }
371                  case EGADSR::segment_exp:          else {
372                      fFinalCutoff *= EG2.processExp();              cvalue = pRegion->VCFCutoff;
373                      break;          }
374                  case EGADSR::segment_end:          float fco = cutoffBase * float(cvalue);
375                      fFinalCutoff *= EG2.getLevel();          if (fco > 127.0f) fco = 127.0f;
                     break; // noop  
             }  
             if (EG3.active()) finalSynthesisParameters.fFinalPitch *= EG3.render();  
376    
377              // process low frequency oscillators          return fco;
378              if (bLFO1Enabled) fFinalVolume *= (1.0f - pLFO1->render());      }
             if (bLFO2Enabled) fFinalCutoff *= pLFO2->render();  
             if (bLFO3Enabled) finalSynthesisParameters.fFinalPitch *= RTMath::CentsToFreqRatio(pLFO3->render());  
   
             // limit the pitch so we don't read outside the buffer  
             finalSynthesisParameters.fFinalPitch = RTMath::Min(finalSynthesisParameters.fFinalPitch, float(1 << CONFIG_MAX_PITCH));  
   
             // if filter enabled then update filter coefficients  
             if (SYNTHESIS_MODE_GET_FILTER(SynthesisMode)) {  
                 finalSynthesisParameters.filterLeft.SetParameters(fFinalCutoff, fFinalResonance, pEngine->SampleRate);  
                 finalSynthesisParameters.filterRight.SetParameters(fFinalCutoff, fFinalResonance, pEngine->SampleRate);  
             }  
379    
380              // do we need resampling?      uint8_t Voice::GetVCFCutoffCtrl() {
381              const float __PLUS_ONE_CENT  = 1.000577789506554859250142541782224725466f;          uint8_t ctrl;
382              const float __MINUS_ONE_CENT = 0.9994225441413807496009516495583113737666f;          switch (pRegion->VCFCutoffController) {
383              const bool bResamplingRequired = !(finalSynthesisParameters.fFinalPitch <= __PLUS_ONE_CENT &&              case ::gig::vcf_cutoff_ctrl_modwheel:
384                                                 finalSynthesisParameters.fFinalPitch >= __MINUS_ONE_CENT);                  ctrl = 1;
385              SYNTHESIS_MODE_SET_INTERPOLATE(SynthesisMode, bResamplingRequired);                  break;
386                case ::gig::vcf_cutoff_ctrl_effect1:
387              // prepare final synthesis parameters structure                  ctrl = 12;
388              finalSynthesisParameters.uiToGo            = iSubFragmentEnd - i;                  break;
389  #ifdef CONFIG_INTERPOLATE_VOLUME              case ::gig::vcf_cutoff_ctrl_effect2:
390              finalSynthesisParameters.fFinalVolumeDeltaLeft  =                  ctrl = 13;
391                  (fFinalVolume * VolumeLeft  * PanLeftSmoother.render() -                  break;
392                   finalSynthesisParameters.fFinalVolumeLeft) / finalSynthesisParameters.uiToGo;              case ::gig::vcf_cutoff_ctrl_breath:
393              finalSynthesisParameters.fFinalVolumeDeltaRight =                  ctrl = 2;
394                  (fFinalVolume * VolumeRight * PanRightSmoother.render() -                  break;
395                   finalSynthesisParameters.fFinalVolumeRight) / finalSynthesisParameters.uiToGo;              case ::gig::vcf_cutoff_ctrl_foot:
396  #else                  ctrl = 4;
397              finalSynthesisParameters.fFinalVolumeLeft  =                  break;
398                  fFinalVolume * VolumeLeft  * PanLeftSmoother.render();              case ::gig::vcf_cutoff_ctrl_sustainpedal:
399              finalSynthesisParameters.fFinalVolumeRight =                  ctrl = 64;
400                  fFinalVolume * VolumeRight * PanRightSmoother.render();                  break;
401  #endif              case ::gig::vcf_cutoff_ctrl_softpedal:
402              // render audio for one subfragment                  ctrl = 67;
403              RunSynthesisFunction(SynthesisMode, &finalSynthesisParameters, &loop);                  break;
404                case ::gig::vcf_cutoff_ctrl_genpurpose7:
405              // stop the rendering if volume EG is finished                  ctrl = 82;
406              if (EG1.getSegmentType() == EGADSR::segment_end) break;                  break;
407                case ::gig::vcf_cutoff_ctrl_genpurpose8:
408              const double newPos = Pos + (iSubFragmentEnd - i) * finalSynthesisParameters.fFinalPitch;                  ctrl = 83;
409                    break;
410              // increment envelopes' positions              case ::gig::vcf_cutoff_ctrl_aftertouch:
411              if (EG1.active()) {                  ctrl = 128;
412                    break;
413                  // 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              case ::gig::vcf_cutoff_ctrl_none:
414                  if (pDimRgn->SampleLoops && Pos <= pDimRgn->pSampleLoops[0].LoopStart && pDimRgn->pSampleLoops[0].LoopStart < newPos) {              default:
415                      EG1.update(EGADSR::event_hold_end, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);                  ctrl = 0;
416                  }                  break;
417            }
418    
419                  EG1.increment(1);          return ctrl;
420                  if (!EG1.toStageEndLeft()) EG1.update(EGADSR::event_stage_end, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);      }
             }  
             if (EG2.active()) {  
                 EG2.increment(1);  
                 if (!EG2.toStageEndLeft()) EG2.update(EGADSR::event_stage_end, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
             }  
             EG3.increment(1);  
             if (!EG3.toEndLeft()) EG3.update(); // neutralize envelope coefficient if end reached  
421    
422              Pos = newPos;      uint8_t Voice::GetVCFResonanceCtrl() {
423              i = iSubFragmentEnd;          uint8_t ctrl;
424            switch (pRegion->VCFResonanceController) {
425                case ::gig::vcf_res_ctrl_genpurpose3:
426                    ctrl = 18;
427                    break;
428                case ::gig::vcf_res_ctrl_genpurpose4:
429                    ctrl = 19;
430                    break;
431                case ::gig::vcf_res_ctrl_genpurpose5:
432                    ctrl = 80;
433                    break;
434                case ::gig::vcf_res_ctrl_genpurpose6:
435                    ctrl = 81;
436                    break;
437                case ::gig::vcf_res_ctrl_none:
438                default:
439                    ctrl = 0;
440          }          }
441    
442            return ctrl;
443      }      }
444    
445      /** @brief Update current portamento position.      void Voice::TriggerEG1(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
446       *          EG1.trigger(pRegion->EG1PreAttack,
447       * Will be called when portamento mode is enabled to get the final                      pRegion->EG1Attack * egInfo.Attack,
448       * portamento position of this active voice from where the next voice(s)                      pRegion->EG1Hold,
449       * might continue to slide on.                      pRegion->EG1Decay1 * egInfo.Decay * velrelease,
450       *                      pRegion->EG1Decay2 * egInfo.Decay * velrelease,
451       * @param itNoteOffEvent - event which causes this voice to die soon                      pRegion->EG1InfiniteSustain,
452       */                      pRegion->EG1Sustain,
453      void Voice::UpdatePortamentoPos(Pool<Event>::Iterator& itNoteOffEvent) {                      pRegion->EG1Release * egInfo.Release * velrelease,
454          const float fFinalEG3Level = EG3.level(itNoteOffEvent->FragmentPos());                      velocityAttenuation,
455          pEngineChannel->PortamentoPos = (float) MIDIKey + RTMath::FreqRatioToCents(fFinalEG3Level) * 0.01f;                      sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
456      }      }
457    
458      /**      void Voice::TriggerEG2(const EGInfo& egInfo, double velrelease, double velocityAttenuation, uint sampleRate, uint8_t velocity) {
459       *  Immediately kill the voice. This method should not be used to kill          EG2.trigger(uint(RgnInfo.EG2PreAttack),
460       *  a normal, active voice, because it doesn't take care of things like                      RgnInfo.EG2Attack * egInfo.Attack,
461       *  fading down the volume level to avoid clicks and regular processing                      false,
462       *  until the kill event actually occured!                      RgnInfo.EG2Decay1 * egInfo.Decay * velrelease,
463       *                      RgnInfo.EG2Decay2 * egInfo.Decay * velrelease,
464       * If it's necessary to know when the voice's disk stream was actually                      RgnInfo.EG2InfiniteSustain,
465       * deleted, then one can set the optional @a bRequestNotification                      uint(RgnInfo.EG2Sustain),
466       * parameter and this method will then return the handle of the disk                      RgnInfo.EG2Release * egInfo.Release * velrelease,
467       * stream (unique identifier) and one can use this handle to poll the                      velocityAttenuation,
468       * disk thread if this stream has been deleted. In any case this method                      sampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
469       * will return immediately and will not block until the stream actually      }
470       * was deleted.  
471       *      void Voice::ProcessGroupEvent(RTList<Event>::Iterator& itEvent) {
472       * @param bRequestNotification - (optional) whether the disk thread shall          dmsg(4,("Voice %x processGroupEvents event type=%d", this, itEvent->Type));
473       *                                provide a notification once it deleted  
474       *                               the respective disk stream          // TODO: The SustainPedal condition could be wrong, maybe the
475       *                               (default=false)          // check should be if this Voice is in release stage or is a
476       * @returns handle to the voice's disk stream or @c Stream::INVALID_HANDLE          // release sample instead. Need to test this in GSt.
477       *          if the voice did not use a disk stream at all          if (itEvent->Param.Note.Key != MIDIKey ||
478       * @see Kill()              !GetGigEngineChannel()->SustainPedal) {
479       */              dmsg(4,("Voice %x - kill", this));
     Stream::Handle Voice::KillImmediately(bool bRequestNotification) {  
         Stream::Handle hStream = Stream::INVALID_HANDLE;  
         if (DiskVoice && DiskStreamRef.State != Stream::state_unused) {  
             pDiskThread->OrderDeletionOfStream(&DiskStreamRef, bRequestNotification);  
             hStream = DiskStreamRef.hStream;  
         }  
         Reset();  
         return hStream;  
     }  
   
     /**  
      *  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  
480    
481          if (itTriggerEvent && itKillEvent->FragmentPos() <= itTriggerEvent->FragmentPos()) return;              // kill the voice fast
482          this->itKillEvent = itKillEvent;              pEG1->enterFadeOutStage();
483            }
484      }      }
485    
486  }} // namespace LinuxSampler::gig  }} // namespace LinuxSampler::gig
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