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

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revision 2012 by iliev, Fri Oct 23 17:53:17 2009 UTC revision 2237 by iliev, Fri Aug 12 13:07:05 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 21  Line 22 
22   *   MA  02111-1307  USA                                                   *   *   MA  02111-1307  USA                                                   *
23   ***************************************************************************/   ***************************************************************************/
24    
25  #include "../../common/Features.h"  #include "Voice.h"
26  #include "../gig/Synthesizer.h"  
 #include "../gig/Profiler.h"  
27  #include "Engine.h"  #include "Engine.h"
28  #include "EngineChannel.h"  #include "EngineChannel.h"
29    
30  #include "Voice.h"  #define LN_10_DIV_20 0.115129254649702
31    
32  namespace LinuxSampler { namespace sfz {  namespace LinuxSampler { namespace sfz {
33    
34      typedef LinuxSampler::gig::Profiler Profiler; // TODO: remove      typedef LinuxSampler::VoiceBase<EngineChannel, ::sfz::Region, Sample, DiskThread> SfzVoice;
35        Voice::Voice(): SignalRack(this), SfzVoice(&SignalRack) {
     Voice::Voice() {  
36          pEngine     = NULL;          pEngine     = NULL;
         pDiskThread = NULL;  
         PlaybackState = playback_state_end;  
         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();  
37      }      }
38    
39      Voice::~Voice() {      Voice::~Voice() {
40          if (pLFO1) delete pLFO1;  
41          if (pLFO2) delete pLFO2;      }
42          if (pLFO3) delete pLFO3;  
43        EngineChannel* Voice::GetSfzEngineChannel() {
44            return static_cast<EngineChannel*>(pEngineChannel);
45      }      }
46    
47      void Voice::SetEngine(LinuxSampler::Engine* pEngine) {      void Voice::SetEngine(LinuxSampler::Engine* pEngine) {
# Line 67  namespace LinuxSampler { namespace sfz { Line 51  namespace LinuxSampler { namespace sfz {
51          dmsg(6,("Voice::SetEngine()\n"));          dmsg(6,("Voice::SetEngine()\n"));
52      }      }
53    
54      /**      Voice::SampleInfo Voice::GetSampleInfo() {
55       *  Initializes and triggers the voice, a disk stream will be launched if          SampleInfo si;
56       *  needed.          si.SampleRate       = pSample->GetSampleRate();
57       *          si.ChannelCount     = pSample->GetChannelCount();
58       *  @param pEngineChannel - engine channel on which this voice was ordered          si.FrameSize        = pSample->GetFrameSize();
59       *  @param itNoteOnEvent  - event that caused triggering of this voice          si.BitDepth         = (pSample->GetFrameSize() / pSample->GetChannelCount()) * 8;
60       *  @param PitchBend      - MIDI detune factor (-8192 ... +8191)          si.TotalFrameCount  = pSample->GetTotalFrameCount();
61       *  @param pRegion        - points to the dimension region which provides sample wave(s) and articulation data  
62       *  @param VoiceType      - type of this voice          si.HasLoops       = pRegion->HasLoop();
63       *  @param iKeyGroup      - a value > 0 defines a key group in which this voice is member of          si.LoopStart      = pRegion->GetLoopStart();
64       *  @returns 0 on success, a value < 0 if the voice wasn't triggered          si.LoopLength     = pRegion->GetLoopEnd() - pRegion->GetLoopStart();
65       *           (either due to an error or e.g. because no region is          si.LoopPlayCount  = pRegion->GetLoopCount();
66       *           defined for the given key)          si.Unpitched      = pRegion->pitch_keytrack == 0;
67       */          return si;
68      int Voice::Trigger(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent, int PitchBend, ::sfz::Region* pRegion, type_t VoiceType, int iKeyGroup) {      }
69          this->pEngineChannel = pEngineChannel;  
70          this->pRegion        = pRegion;      Voice::RegionInfo Voice::GetRegionInfo() {
71          Orphan = false;          RegionInfo ri;
72            ri.UnityNote = pRegion->pitch_keycenter;
73          #if CONFIG_DEVMODE          ri.FineTune  = pRegion->tune + pRegion->transpose * 100;
74          if (itNoteOnEvent->FragmentPos() > pEngine->MaxSamplesPerCycle) { // just a sanity check for debugging          ri.Pan       = int(pRegion->pan * 0.63); // convert from -100..100 to -64..63
75              dmsg(1,("Voice::Trigger(): ERROR, TriggerDelay > Totalsamples\n"));          ri.SampleStartOffset = pRegion->offset ? *(pRegion->offset) : 0;
76          }  
77          #endif // CONFIG_DEVMODE          ri.VCFEnabled    = pRegion->cutoff;
78            switch (pRegion->fil_type) {
79            case ::sfz::LPF_1P:
80                ri.VCFType = Filter::vcf_type_1p_lowpass;
81                break;
82            case ::sfz::LPF_2P:
83                ri.VCFType = Filter::vcf_type_2p_lowpass;
84                break;
85            case ::sfz::LPF_4P:
86                ri.VCFType = Filter::vcf_type_4p_lowpass;
87                break;
88            case ::sfz::LPF_6P:
89                ri.VCFType = Filter::vcf_type_6p_lowpass;
90                break;
91            case ::sfz::HPF_1P:
92                ri.VCFType = Filter::vcf_type_1p_highpass;
93                break;
94            case ::sfz::HPF_2P:
95                ri.VCFType = Filter::vcf_type_2p_highpass;
96                break;
97            case ::sfz::HPF_4P:
98                ri.VCFType = Filter::vcf_type_4p_highpass;
99                break;
100            case ::sfz::HPF_6P:
101                ri.VCFType = Filter::vcf_type_6p_highpass;
102                break;
103            case ::sfz::BPF_1P:
104            case ::sfz::BPF_2P:
105                ri.VCFType = Filter::vcf_type_2p_bandpass;
106                break;
107            case ::sfz::BRF_1P:
108            case ::sfz::BRF_2P:
109                ri.VCFType = Filter::vcf_type_2p_bandreject;
110                break;
111            case ::sfz::APF_1P:
112            case ::sfz::PKF_2P:
113            default:
114                ri.VCFEnabled = false;
115                break;
116            }
117    
118            ri.VCFResonance  = pRegion->resonance;
119    
120            // rt_decay is in dB. Precalculate a suitable value for exp in
121            // GetReleaseTriggerAttenuation: -ln(10) / 20 * rt_decay
122            ri.ReleaseTriggerDecay = -LN_10_DIV_20 * pRegion->rt_decay;
123    
124            return ri;
125        }
126    
127        Voice::InstrumentInfo Voice::GetInstrumentInfo() {
128            InstrumentInfo ii;
129            ii.FineTune = 0; // TODO:
130            ii.PitchbendRange = 2; // TODO:
131    
132            return ii;
133        }
134    
135        double Voice::GetSampleAttenuation() {
136            return exp(LN_10_DIV_20 * pRegion->volume);
137        }
138    
139        double Voice::GetVelocityAttenuation(uint8_t MIDIKeyVelocity) {
140            return pRegion->amp_velcurve[MIDIKeyVelocity];
141        }
142    
143        double Voice::GetVelocityRelease(uint8_t MIDIKeyVelocity) {
144            return 127.0 / MIDIKeyVelocity;
145        }
146    
147        void Voice::ProcessCCEvent(RTList<Event>::Iterator& itEvent) {
148            /*if (itEvent->Type == Event::type_control_change && itEvent->Param.CC.Controller) { // if (valid) MIDI control change event
149                if (pRegion->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&
150                    itEvent->Param.CC.Controller == pRegion->AttenuationController.controller_number) {
151                    CrossfadeSmoother.update(AbstractEngine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.CC.Value)]);
152                }
153            }*/ // TODO: ^^^
154        }
155    
156          Type            = VoiceType;      void Voice::ProcessCutoffEvent(RTList<Event>::Iterator& itEvent) {
157          MIDIKey         = itNoteOnEvent->Param.Note.Key;          int ccvalue = itEvent->Param.CC.Value;
158          PlaybackState   = playback_state_init; // mark voice as triggered, but no audio rendered yet          if (VCFCutoffCtrl.value == ccvalue) return;
159          Delay           = itNoteOnEvent->FragmentPos();          VCFCutoffCtrl.value = ccvalue;
         itTriggerEvent  = itNoteOnEvent;  
         itKillEvent     = Pool<Event>::Iterator();  
         KeyGroup        = iKeyGroup;  
         pSample         = pRegion->pSample; // sample won't change until the voice is finished  
   
         /*// calculate volume  
         const double velocityAttenuation = pRegion->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);  
   
         float volume = pRegion->SampleAttenuation * pEngineChannel->GlobalVolume * GLOBAL_VOLUME;  
          */ // TODO: ^^^  
         float volume = 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 >> pRegion->ReleaseTriggerDecay) * noteLength;  
             if (attenuation <= 0) return -1;  
             volume *= attenuation;  
         }  
          */ // TODO: ^^^  
160    
161          // select channel mode (mono or stereo)          float cutoff = CutoffBase * RTMath::CentsToFreqRatioUnlimited(
162          SYNTHESIS_MODE_SET_CHANNELS(SynthesisMode, pSample->GetChannelCount() == 2);              ccvalue / 127.0f * pRegion->cutoff_oncc[VCFCutoffCtrl.controller]);
163          // select bit depth (16 or 24)          if (cutoff > 0.49 * pEngine->SampleRate) cutoff = 0.49 * pEngine->SampleRate;
         SYNTHESIS_MODE_SET_BITDEPTH24(SynthesisMode, (pSample->GetFrameSize() / pSample->GetChannelCount()) > 2);  
164    
165          // get starting crossfade volume level          VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of fFinalCutoff next time
166            fFinalCutoff = cutoff;
167        }
168    
169        double Voice::CalculateCrossfadeVolume(uint8_t MIDIKeyVelocity) {
170          /*float crossfadeVolume;          /*float crossfadeVolume;
171          switch (pRegion->AttenuationController.type) {          switch (pRegion->AttenuationController.type) {
172              case ::gig::attenuation_ctrl_t::type_channelaftertouch:              case ::gig::attenuation_ctrl_t::type_channelaftertouch:
173                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(pEngineChannel->ControllerTable[128])];                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetSfzEngineChannel()->ControllerTable[128])];
174                  break;                  break;
175              case ::gig::attenuation_ctrl_t::type_velocity:              case ::gig::attenuation_ctrl_t::type_velocity:
176                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(itNoteOnEvent->Param.Note.Velocity)];                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(MIDIKeyVelocity)];
177                  break;                  break;
178              case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate              case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate
179                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(pEngineChannel->ControllerTable[pRegion->AttenuationController.controller_number])];                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(GetSfzEngineChannel()->ControllerTable[pRegion->AttenuationController.controller_number])];
180                  break;                  break;
181              case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined              case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined
182              default:              default:
183                  crossfadeVolume = 1.0f;                  crossfadeVolume = 1.0f;
         }*/ // TODO: ^^^  
   
         VolumeLeft  = volume * Engine::PanCurve[64 - pRegion->pan];  
         VolumeRight = volume * Engine::PanCurve[64 + pRegion->pan];  
   
         float subfragmentRate = pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE;  
         //CrossfadeSmoother.trigger(crossfadeVolume, subfragmentRate); // TODO:  
         VolumeSmoother.trigger(pEngineChannel->MidiVolume, subfragmentRate);  
         PanLeftSmoother.trigger(pEngineChannel->GlobalPanLeft, subfragmentRate);  
         PanRightSmoother.trigger(pEngineChannel->GlobalPanRight, subfragmentRate);  
   
         /*finalSynthesisParameters.dPos = pRegion->SampleStartOffset; // offset where we should start playback of sample (0 - 2000 sample points)  
         Pos = pRegion->SampleStartOffset;*/ // TODO: ^^^  
         Pos = finalSynthesisParameters.dPos = 0;  
   
         // Check if the sample needs disk streaming or is too short for that  
         long cachedsamples = pSample->GetCache().Size / pSample->GetFrameSize();  
         DiskVoice          = cachedsamples < pSample->GetTotalFrameCount();  
   
         //const DLS::sample_loop_t& loopinfo = pRegion->pSampleLoops[0]; // TODO:  
   
         if (DiskVoice) { // voice to be streamed from disk  
             if (cachedsamples > (pEngine->MaxSamplesPerCycle << CONFIG_MAX_PITCH)) {  
                 MaxRAMPos = cachedsamples - (pEngine->MaxSamplesPerCycle << CONFIG_MAX_PITCH) / pSample->GetChannelCount(); //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;  
             }  
   
             // check if there's a loop defined which completely fits into the cached (RAM) part of the sample  
             //RAMLoop = (pRegion->SampleLoops && (loopinfo.LoopStart + loopinfo.LoopLength) <= MaxRAMPos); // TODO:  
             if (pDiskThread->OrderNewStream(&DiskStreamRef, pRegion, MaxRAMPos, false) < 0) {  
                 dmsg(1,("Disk stream order failed!\n"));  
                 KillImmediately();  
                 return -1;  
             }  
             dmsg(4,("Disk voice launched (cached samples: %d, total Samples: %d, MaxRAMPos: %d, RAMLooping: %s)\n", cachedsamples, pSample->GetTotalFrameCount(), MaxRAMPos, (RAMLoop) ? "yes" : "no"));  
         }  
         else { // RAM only voice  
             MaxRAMPos = cachedsamples;  
             /*RAMLoop = (pRegion->SampleLoops != 0);  
             dmsg(4,("RAM only voice launched (Looping: %s)\n", (RAMLoop) ? "yes" : "no")); */ // TODO:  
         }  
         /*if (RAMLoop) {  
             loop.uiTotalCycles = pSample->LoopPlayCount;  
             loop.uiCyclesLeft  = pSample->LoopPlayCount;  
             loop.uiStart       = loopinfo.LoopStart;  
             loop.uiEnd         = loopinfo.LoopStart + loopinfo.LoopLength;  
             loop.uiSize        = loopinfo.LoopLength;  
         }*/ // TODO: ^^^  
   
         // calculate initial pitch value  
         {  
             double pitchbasecents = /* TODO: pEngineChannel->pInstrument->FineTune*/ + pRegion->tune + 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 (pRegion->PitchTrack && (MIDIKey - (int) pRegion->UnityNote) < 40) pitchbasecents += (MIDIKey - (int) pRegion->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);*/ // TODO: ^^^  
         }  
   
         // the length of the decay and release curves are dependent on the velocity  
         //const double velrelease = 1 / pRegion->GetVelocityRelease(itNoteOnEvent->Param.Note.Velocity); //TODO:  
   
         // setup EG 1 (VCA EG)  
         {  
         /*    // get current value of EG1 controller  
             double eg1controllervalue;  
             switch (pRegion->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[pRegion->EG1Controller.controller_number];  
                     break;  
             }  
             if (pRegion->EG1ControllerInvert) eg1controllervalue = 127 - eg1controllervalue;  
   
             // calculate influence of EG1 controller on EG1's parameters  
             // (eg1attack is different from the others)  
             double eg1attack  = (pRegion->EG1ControllerAttackInfluence)  ?  
                 1 + 0.031 * (double) (pRegion->EG1ControllerAttackInfluence == 1 ?  
                                       1 : 1 << pRegion->EG1ControllerAttackInfluence) * eg1controllervalue : 1.0;  
             double eg1decay   = (pRegion->EG1ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerDecayInfluence)   * eg1controllervalue : 1.0;  
             double eg1release = (pRegion->EG1ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerReleaseInfluence) * eg1controllervalue : 1.0;  
   
             EG1.trigger(pRegion->EG1PreAttack,  
                         pRegion->EG1Attack * eg1attack,  
                         pRegion->EG1Hold,  
                         pRegion->EG1Decay1 * eg1decay * velrelease,  
                         pRegion->EG1Decay2 * eg1decay * velrelease,  
                         pRegion->EG1InfiniteSustain,  
                         pRegion->EG1Sustain,  
                         pRegion->EG1Release * eg1release * velrelease,  
                         velocityAttenuation,  
                         pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
         }*/ // TODO: ^^^  
             EG1.trigger(0,  
                         0,  
                         false,  
                         0,  
                         0,  
                         true,  
                         100,  
                         0,  
                         1,  
                         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;  
184          }          }
         else  
 #else  
         {  
             //float finalVolume = pEngineChannel->MidiVolume * crossfadeVolume * EG1.getLevel(); // TODO:  
             float finalVolume = pEngineChannel->MidiVolume;  
185    
186              finalSynthesisParameters.fFinalVolumeLeft  = finalVolume * VolumeLeft  * pEngineChannel->GlobalPanLeft;          return crossfadeVolume;*/ // TODO: ^^^
187              finalSynthesisParameters.fFinalVolumeRight = finalVolume * VolumeRight * pEngineChannel->GlobalPanRight;          return 1.0f;
         }  
 #endif  
 #endif  
   
         // setup EG 2 (VCF Cutoff EG)  
         /*{  
             // get current value of EG2 controller  
             double eg2controllervalue;  
             switch (pRegion->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[pRegion->EG2Controller.controller_number];  
                     break;  
             }  
             if (pRegion->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue;  
   
             // calculate influence of EG2 controller on EG2's parameters  
             double eg2attack  = (pRegion->EG2ControllerAttackInfluence)  ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerAttackInfluence)  * eg2controllervalue : 1.0;  
             double eg2decay   = (pRegion->EG2ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerDecayInfluence)   * eg2controllervalue : 1.0;  
             double eg2release = (pRegion->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerReleaseInfluence) * eg2controllervalue : 1.0;  
   
             EG2.trigger(pRegion->EG2PreAttack,  
                         pRegion->EG2Attack * eg2attack,  
                         false,  
                         pRegion->EG2Decay1 * eg2decay * velrelease,  
                         pRegion->EG2Decay2 * eg2decay * velrelease,  
                         pRegion->EG2InfiniteSustain,  
                         pRegion->EG2Sustain,  
                         pRegion->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(pRegion->EG3Depth);  
             float eg3time = (bPortamento)  
                                 ? pEngineChannel->PortamentoTime  
                                 : pRegion->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 (pRegion->LFO1Controller) {  
                 case ::gig::lfo1_ctrl_internal:  
                     lfo1_internal_depth  = pRegion->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         = (pRegion->LFO1ControlDepth > 0);  
                     break;  
                 case ::gig::lfo1_ctrl_breath:  
                     lfo1_internal_depth  = 0;  
                     pLFO1->ExtController = 2; // MIDI controller 2  
                     bLFO1Enabled         = (pRegion->LFO1ControlDepth > 0);  
                     break;  
                 case ::gig::lfo1_ctrl_internal_modwheel:  
                     lfo1_internal_depth  = pRegion->LFO1InternalDepth;  
                     pLFO1->ExtController = 1; // MIDI controller 1  
                     bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);  
                     break;  
                 case ::gig::lfo1_ctrl_internal_breath:  
                     lfo1_internal_depth  = pRegion->LFO1InternalDepth;  
                     pLFO1->ExtController = 2; // MIDI controller 2  
                     bLFO1Enabled         = (lfo1_internal_depth > 0 || pRegion->LFO1ControlDepth > 0);  
                     break;  
                 default:  
                     lfo1_internal_depth  = 0;  
                     pLFO1->ExtController = 0; // no external controller  
                     bLFO1Enabled         = false;  
             }  
             if (bLFO1Enabled) {  
                 pLFO1->trigger(pRegion->LFO1Frequency,  
                                start_level_min,  
                                lfo1_internal_depth,  
                                pRegion->LFO1ControlDepth,  
                                pRegion->LFO1FlipPhase,  
                                pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
                 pLFO1->update(pLFO1->ExtController ? pEngineChannel->ControllerTable[pLFO1->ExtController] : 0);  
             }  
         }  
   
   
         // setup LFO 2 (VCF Cutoff LFO)  
         {  
             uint16_t lfo2_internal_depth;  
             switch (pRegion->LFO2Controller) {  
                 case ::gig::lfo2_ctrl_internal:  
                     lfo2_internal_depth  = pRegion->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         = (pRegion->LFO2ControlDepth > 0);  
                     break;  
                 case ::gig::lfo2_ctrl_foot:  
                     lfo2_internal_depth  = 0;  
                     pLFO2->ExtController = 4; // MIDI controller 4  
                     bLFO2Enabled         = (pRegion->LFO2ControlDepth > 0);  
                     break;  
                 case ::gig::lfo2_ctrl_internal_modwheel:  
                     lfo2_internal_depth  = pRegion->LFO2InternalDepth;  
                     pLFO2->ExtController = 1; // MIDI controller 1  
                     bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);  
                     break;  
                 case ::gig::lfo2_ctrl_internal_foot:  
                     lfo2_internal_depth  = pRegion->LFO2InternalDepth;  
                     pLFO2->ExtController = 4; // MIDI controller 4  
                     bLFO2Enabled         = (lfo2_internal_depth > 0 || pRegion->LFO2ControlDepth > 0);  
                     break;  
                 default:  
                     lfo2_internal_depth  = 0;  
                     pLFO2->ExtController = 0; // no external controller  
                     bLFO2Enabled         = false;  
             }  
             if (bLFO2Enabled) {  
                 pLFO2->trigger(pRegion->LFO2Frequency,  
                                start_level_max,  
                                lfo2_internal_depth,  
                                pRegion->LFO2ControlDepth,  
                                pRegion->LFO2FlipPhase,  
                                pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
                 pLFO2->update(pLFO2->ExtController ? pEngineChannel->ControllerTable[pLFO2->ExtController] : 0);  
             }  
         }  
   
   
         // setup LFO 3 (VCO LFO)  
         {  
             uint16_t lfo3_internal_depth;  
             switch (pRegion->LFO3Controller) {  
                 case ::gig::lfo3_ctrl_internal:  
                     lfo3_internal_depth  = pRegion->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         = (pRegion->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  = pRegion->LFO3InternalDepth;  
                     pLFO3->ExtController = 1; // MIDI controller 1  
                     bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);  
                     break;  
                 case ::gig::lfo3_ctrl_internal_aftertouch:  
                     lfo3_internal_depth  = pRegion->LFO3InternalDepth;  
                     pLFO1->ExtController = 128;  
                     bLFO3Enabled         = (lfo3_internal_depth > 0 || pRegion->LFO3ControlDepth > 0);  
                     break;  
                 default:  
                     lfo3_internal_depth  = 0;  
                     pLFO3->ExtController = 0; // no external controller  
                     bLFO3Enabled         = false;  
             }  
             if (bLFO3Enabled) {  
                 pLFO3->trigger(pRegion->LFO3Frequency,  
                                start_level_mid,  
                                lfo3_internal_depth,  
                                pRegion->LFO3ControlDepth,  
                                false,  
                                pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
                 pLFO3->update(pLFO3->ExtController ? pEngineChannel->ControllerTable[pLFO3->ExtController] : 0);  
             }  
         }*/ // TODO: ^^^  
   
   
         /*#if CONFIG_FORCE_FILTER  
         const bool bUseFilter = true;  
         #else // use filter only if instrument file told so  
         const bool bUseFilter = pRegion->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 (pRegion->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;  
             }  
             #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 (pRegion->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(pRegion->VCFType);  
             finalSynthesisParameters.filterRight.SetType(pRegion->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 = pRegion->GetVelocityCutoff(itNoteOnEvent->Param.Note.Velocity);  
             if (pRegion->VCFKeyboardTracking) {  
                 cutoff *= exp((itNoteOnEvent->Param.Note.Key - pRegion->VCFKeyboardTrackingBreakpoint) * 0.057762265f); // (ln(2) / 12)  
             }  
             CutoffBase = cutoff;  
   
             int cvalue;  
             if (VCFCutoffCtrl.controller) {  
                 cvalue = pEngineChannel->ControllerTable[VCFCutoffCtrl.controller];  
                 if (pRegion->VCFCutoffControllerInvert) cvalue = 127 - cvalue;  
                 // VCFVelocityScale in this case means Minimum cutoff  
                 if (cvalue < pRegion->VCFVelocityScale) cvalue = pRegion->VCFVelocityScale;  
             }  
             else {  
                 cvalue = pRegion->VCFCutoff;  
             }  
             cutoff *= float(cvalue);  
             if (cutoff > 127.0f) cutoff = 127.0f;  
   
             // calculate resonance  
             float resonance = (float) (VCFResonanceCtrl.controller ? VCFResonanceCtrl.value : pRegion->VCFResonance);  
   
             VCFCutoffCtrl.fvalue    = cutoff;  
             VCFResonanceCtrl.fvalue = resonance;  
         }  
         else {  
             VCFCutoffCtrl.controller    = 0;  
             VCFResonanceCtrl.controller = 0;  
         }*/ // TODO: ^^^  
   
         return 0; // success  
188      }      }
189    
190      /**      double Voice::GetEG1ControllerValue(uint8_t MIDIKeyVelocity) {
191       *  Renders the audio data for this voice for the current audio fragment.          /*double eg1controllervalue = 0;
192       *  The sample input data can either come from RAM (cached sample or sample          switch (pRegion->EG1Controller.type) {
193       *  part) or directly from disk. The output signal will be rendered by              case ::gig::eg1_ctrl_t::type_none: // no controller defined
194       *  resampling / interpolation. If this voice is a disk streaming voice and                  eg1controllervalue = 0;
      *  the voice completely played back the cached RAM part of the sample, it  
      *  will automatically switch to disk playback for the next RenderAudio()  
      *  call.  
      *  
      *  @param Samples - number of samples to be rendered in this audio fragment cycle  
      */  
     void Voice::Render(uint Samples) {  
         // select default values for synthesis mode bits  
         SYNTHESIS_MODE_SET_LOOP(SynthesisMode, false);  
   
         switch (this->PlaybackState) {  
   
             case playback_state_init:  
                 this->PlaybackState = playback_state_ram; // we always start playback from RAM cache and switch then to disk if needed  
                 // no break - continue with playback_state_ram  
   
             case playback_state_ram: {  
                     //if (RAMLoop) SYNTHESIS_MODE_SET_LOOP(SynthesisMode, true); // enable looping  
   
                     // render current fragment  
                     Synthesize(Samples, (sample_t*) pSample->GetCache().pStart, Delay);  
   
                     if (DiskVoice) {  
                         // check if we reached the allowed limit of the sample RAM cache  
                         if (finalSynthesisParameters.dPos > MaxRAMPos) {  
                             dmsg(5,("Voice: switching to disk playback (Pos=%f)\n", finalSynthesisParameters.dPos));  
                             this->PlaybackState = playback_state_disk;  
                         }  
                     } else if (finalSynthesisParameters.dPos >= pSample->GetCache().Size / pSample->GetFrameSize()) {  
                         this->PlaybackState = playback_state_end;  
                     }  
                 }  
195                  break;                  break;
196                case ::gig::eg1_ctrl_t::type_channelaftertouch:
197              case playback_state_disk: {                  eg1controllervalue = GetSfzEngineChannel()->ControllerTable[128];
                     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->GetChannelCount() * (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->GetChannelCount() + 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->GetChannelCount(); // 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;  
                     }  
                 }  
198                  break;                  break;
199                case ::gig::eg1_ctrl_t::type_velocity:
200              case playback_state_end:                  eg1controllervalue = MIDIKeyVelocity;
201                  std::cerr << "gig::Voice::Render(): entered with playback_state_end, this is a bug!\n" << std::flush;                  break;
202                case ::gig::eg1_ctrl_t::type_controlchange: // MIDI control change controller
203                    eg1controllervalue = GetSfzEngineChannel()->ControllerTable[pRegion->EG1Controller.controller_number];
204                  break;                  break;
205          }          }
206            if (pRegion->EG1ControllerInvert) eg1controllervalue = 127 - eg1controllervalue;
207    
208          // Reset delay          return eg1controllervalue;*/ // TODO: ^^^
209          Delay = 0;          return 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();  
210      }      }
211    
212      /**      Voice::EGInfo Voice::CalculateEG1ControllerInfluence(double eg1ControllerValue) {
213       *  Resets voice variables. Should only be called if rendering process is          /*EGInfo eg;
214       *  suspended / not running.          // (eg1attack is different from the others)
215       */          eg.Attack  = (pRegion->EG1ControllerAttackInfluence)  ?
216      void Voice::Reset() {              1 + 0.031 * (double) (pRegion->EG1ControllerAttackInfluence == 1 ?
217          finalSynthesisParameters.filterLeft.Reset();                                    1 : 1 << pRegion->EG1ControllerAttackInfluence) * eg1ControllerValue : 1.0;
218          finalSynthesisParameters.filterRight.Reset();          eg.Decay   = (pRegion->EG1ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerDecayInfluence)   * eg1ControllerValue : 1.0;
219          DiskStreamRef.pStream = NULL;          eg.Release = (pRegion->EG1ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG1ControllerReleaseInfluence) * eg1ControllerValue : 1.0;
220          DiskStreamRef.hStream = 0;  
221          DiskStreamRef.State   = Stream::state_unused;          return eg;*/ // TODO: ^^^
222          DiskStreamRef.OrderID = 0;          EGInfo eg;
223          PlaybackState = playback_state_end;          eg.Attack = 1.0;
224          itTriggerEvent = Pool<Event>::Iterator();          eg.Decay = 1.0;
225          itKillEvent    = Pool<Event>::Iterator();          eg.Release = 1.0;
226      }          return eg;
227        }
228      /**  
229       * Process given list of MIDI note on, note off and sustain pedal events      double Voice::GetEG2ControllerValue(uint8_t MIDIKeyVelocity) {
230       * for the given time.          /*double eg2controllervalue = 0;
231       *          switch (pRegion->EG2Controller.type) {
232       * @param itEvent - iterator pointing to the next event to be processed              case ::gig::eg2_ctrl_t::type_none: // no controller defined
233       * @param End     - youngest time stamp where processing should be stopped                  eg2controllervalue = 0;
234       */                  break;
235      void Voice::processTransitionEvents(RTList<Event>::Iterator& itEvent, uint End) {              case ::gig::eg2_ctrl_t::type_channelaftertouch:
236          for (; itEvent && itEvent->FragmentPos() <= End; ++itEvent) {                  eg2controllervalue = GetSfzEngineChannel()->ControllerTable[128];
237              if (itEvent->Type == Event::type_release) {                  break;
238                  EG1.update(EGADSR::event_release, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);              case ::gig::eg2_ctrl_t::type_velocity:
239                  EG2.update(EGADSR::event_release, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);                  eg2controllervalue = MIDIKeyVelocity;
240              } else if (itEvent->Type == Event::type_cancel_release) {                  break;
241                  EG1.update(EGADSR::event_cancel_release, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);              case ::gig::eg2_ctrl_t::type_controlchange: // MIDI control change controller
242                  EG2.update(EGADSR::event_cancel_release, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);                  eg2controllervalue = GetSfzEngineChannel()->ControllerTable[pRegion->EG2Controller.controller_number];
243              }                  break;
244          }          }
245            if (pRegion->EG2ControllerInvert) eg2controllervalue = 127 - eg2controllervalue;
246    
247            return eg2controllervalue;*/ // TODO: ^^^
248            return 0;
249      }      }
250    
251      /**      Voice::EGInfo Voice::CalculateEG2ControllerInfluence(double eg2ControllerValue) {
252       * Process given list of MIDI control change and pitch bend events for          /*EGInfo eg;
253       * the given time.          eg.Attack  = (pRegion->EG2ControllerAttackInfluence)  ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerAttackInfluence)  * eg2ControllerValue : 1.0;
254       *          eg.Decay   = (pRegion->EG2ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerDecayInfluence)   * eg2ControllerValue : 1.0;
255       * @param itEvent - iterator pointing to the next event to be processed          eg.Release = (pRegion->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pRegion->EG2ControllerReleaseInfluence) * eg2ControllerValue : 1.0;
256       * @param End     - youngest time stamp where processing should be stopped  
257       */          return eg;*/ // TODO: ^^^
258      void Voice::processCCEvents(RTList<Event>::Iterator& itEvent, uint End) {          EGInfo eg;
259          for (; itEvent && itEvent->FragmentPos() <= End; ++itEvent) {          eg.Attack = 1.0;
260              if (itEvent->Type == Event::type_control_change &&          eg.Decay = 1.0;
261                  itEvent->Param.CC.Controller) { // if (valid) MIDI control change event          eg.Release = 1.0;
262                  if (itEvent->Param.CC.Controller == VCFCutoffCtrl.controller) {          return eg;
263                      processCutoffEvent(itEvent);      }
264                  }  
265                  if (itEvent->Param.CC.Controller == VCFResonanceCtrl.controller) {      float Voice::CalculateCutoffBase(uint8_t MIDIKeyVelocity) {
266                      processResonanceEvent(itEvent);          float cutoff = *pRegion->cutoff;
267                  }          cutoff *= RTMath::CentsToFreqRatioUnlimited(
268                  if (itEvent->Param.CC.Controller == pLFO1->ExtController) {              MIDIKeyVelocity / 127.0f * pRegion->fil_veltrack +
269                      pLFO1->update(itEvent->Param.CC.Value);              (MIDIKey - pRegion->fil_keycenter) * pRegion->fil_keytrack);
270                  }          return cutoff;
271                  if (itEvent->Param.CC.Controller == pLFO2->ExtController) {      }
272                      pLFO2->update(itEvent->Param.CC.Value);  
273                  }      float Voice::CalculateFinalCutoff(float cutoffBase) {
274                  if (itEvent->Param.CC.Controller == pLFO3->ExtController) {          float cutoff;
275                      pLFO3->update(itEvent->Param.CC.Value);          if (VCFCutoffCtrl.controller) {
276                  }              int ccvalue = GetSfzEngineChannel()->ControllerTable[VCFCutoffCtrl.controller];
277                  /*if (pRegion->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&              cutoff = CutoffBase * RTMath::CentsToFreqRatioUnlimited(
278                      itEvent->Param.CC.Controller == pRegion->AttenuationController.controller_number) {                  ccvalue / 127.0f * pRegion->cutoff_oncc[VCFCutoffCtrl.controller]);
279                      CrossfadeSmoother.update(Engine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.CC.Value)]);          } else {
280                  }*/ // TODO:              cutoff = cutoffBase;
281                  if (itEvent->Param.CC.Controller == 7) { // volume          }
282                      VolumeSmoother.update(Engine::VolumeCurve[itEvent->Param.CC.Value]);          if (cutoff > 0.49 * pEngine->SampleRate) cutoff = 0.49 * pEngine->SampleRate;
283                  } else if (itEvent->Param.CC.Controller == 10) { // panpot          return cutoff;
284                      PanLeftSmoother.update(Engine::PanCurve[128 - itEvent->Param.CC.Value]);      }
285                      PanRightSmoother.update(Engine::PanCurve[itEvent->Param.CC.Value]);  
286                  }      uint8_t Voice::GetVCFCutoffCtrl() {
287              } else if (itEvent->Type == Event::type_pitchbend) { // if pitch bend event          // TODO: the sfz format allows several CC for the same
288                  processPitchEvent(itEvent);          // modulation destination. The Voice interface needs to be
289              }          // changed to support that.
290            if (pRegion->cutoff_cc) return pRegion->cutoff_cc;
291            else if (pRegion->cutoff_chanaft) return 128;
292            return 0;
293        }
294    
295        uint8_t Voice::GetVCFResonanceCtrl() {
296            /*uint8_t ctrl;
297            switch (pRegion->VCFResonanceController) {
298                case ::gig::vcf_res_ctrl_genpurpose3:
299                    ctrl = 18;
300                    break;
301                case ::gig::vcf_res_ctrl_genpurpose4:
302                    ctrl = 19;
303                    break;
304                case ::gig::vcf_res_ctrl_genpurpose5:
305                    ctrl = 80;
306                    break;
307                case ::gig::vcf_res_ctrl_genpurpose6:
308                    ctrl = 81;
309                    break;
310                case ::gig::vcf_res_ctrl_none:
311                default:
312                    ctrl = 0;
313          }          }
     }  
314    
315      void Voice::processPitchEvent(RTList<Event>::Iterator& itEvent) {          return ctrl;*/ // TODO: ^^^
316          PitchBend = RTMath::CentsToFreqRatio(itEvent->Param.Pitch.Pitch * PitchBendRange);          return 0;
317      }      }
318    
319      void Voice::processCutoffEvent(RTList<Event>::Iterator& itEvent) {      float Voice::GetReleaseTriggerAttenuation(float noteLength) {
320          /*int ccvalue = itEvent->Param.CC.Value;          // pow(10, -rt_decay * noteLength / 20):
321          if (VCFCutoffCtrl.value == ccvalue) return;          return expf(RgnInfo.ReleaseTriggerDecay * noteLength);
         VCFCutoffCtrl.value == ccvalue;  
         if (pRegion->VCFCutoffControllerInvert)  ccvalue = 127 - ccvalue;  
         if (ccvalue < pRegion->VCFVelocityScale) ccvalue = pRegion->VCFVelocityScale;  
         float cutoff = CutoffBase * float(ccvalue);  
         if (cutoff > 127.0f) cutoff = 127.0f;  
   
         VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of fFinalCutoff next time  
         fFinalCutoff = cutoff;*/ // TODO: ^^^  
322      }      }
323    
324      void Voice::processResonanceEvent(RTList<Event>::Iterator& itEvent) {      void Voice::ProcessGroupEvent(RTList<Event>::Iterator& itEvent) {
325          // convert absolute controller value to differential          dmsg(4,("Voice %x processGroupEvents event type=%d", this, itEvent->Type));
326          const int ctrldelta = itEvent->Param.CC.Value - VCFResonanceCtrl.value;          if (itEvent->Type == Event::type_control_change ||
327          VCFResonanceCtrl.value = itEvent->Param.CC.Value;              (Type & Voice::type_controller_triggered) ||
328          const float resonancedelta = (float) ctrldelta;              itEvent->Param.Note.Key != MIDIKey) {
329          fFinalResonance += resonancedelta;              dmsg(4,("Voice %x - kill", this));
330          // needed for initialization of parameter              if (pRegion->off_mode == ::sfz::OFF_NORMAL) {
331          VCFResonanceCtrl.fvalue = itEvent->Param.CC.Value;                  // turn off the voice by entering release envelope stage
332      }                  EnterReleaseStage();
   
     /**  
      *  Synthesizes the current audio fragment for this voice.  
      *  
      *  @param Samples - number of sample points to be rendered in this audio  
      *                   fragment cycle  
      *  @param pSrc    - pointer to input sample data  
      *  @param Skip    - number of sample points to skip in output buffer  
      */  
     void Voice::Synthesize(uint Samples, sample_t* pSrc, uint Skip) {  
         finalSynthesisParameters.pOutLeft  = &pEngineChannel->pChannelLeft->Buffer()[Skip];  
         finalSynthesisParameters.pOutRight = &pEngineChannel->pChannelRight->Buffer()[Skip];  
         finalSynthesisParameters.pSrc      = pSrc;  
   
         RTList<Event>::Iterator itCCEvent = pEngineChannel->pEvents->first();  
         RTList<Event>::Iterator itNoteEvent = pEngineChannel->pMIDIKeyInfo[MIDIKey].pEvents->first();  
           
   
         if (itTriggerEvent) { // skip events that happened before this voice was triggered  
             while (itCCEvent && itCCEvent->FragmentPos() <= Skip) ++itCCEvent;  
             // we can't simply compare the timestamp here, because note events  
             // might happen on the same time stamp, so we have to deal on the  
             // actual sequence the note events arrived instead (see bug #112)  
             for (; itNoteEvent; ++itNoteEvent) {  
                 if (itTriggerEvent == itNoteEvent) {  
                     ++itNoteEvent;  
                     break;  
                 }  
             }  
         }  
   
         uint killPos;  
         if (itKillEvent) {  
             int maxFadeOutPos = Samples - pEngine->MinFadeOutSamples;  
             if (maxFadeOutPos < 0) {  
                 // There's not enough space in buffer to do a fade out  
                 // from max volume (this can only happen for audio  
                 // drivers that use Samples < MaxSamplesPerCycle).  
                 // End the EG1 here, at pos 0, with a shorter max fade  
                 // out time.  
                 EG1.enterFadeOutStage(Samples / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
                 itKillEvent = Pool<Event>::Iterator();  
333              } else {              } else {
334                  killPos = RTMath::Min(itKillEvent->FragmentPos(), maxFadeOutPos);                  // kill the voice fast
335                    SignalRack.EnterFadeOutStage();
336              }              }
337          }          }
   
         uint i = Skip;  
         /*while (i < Samples) {  
             int iSubFragmentEnd = RTMath::Min(i + CONFIG_DEFAULT_SUBFRAGMENT_SIZE, Samples);  
   
             // initialize all final synthesis parameters  
             fFinalCutoff    = VCFCutoffCtrl.fvalue;  
             fFinalResonance = VCFResonanceCtrl.fvalue;  
   
             // process MIDI control change and pitchbend events for this subfragment  
             processCCEvents(itCCEvent, iSubFragmentEnd);  
   
             finalSynthesisParameters.fFinalPitch = PitchBase * PitchBend;  
             float fFinalVolume = VolumeSmoother.render() * CrossfadeSmoother.render();  
 #ifdef CONFIG_PROCESS_MUTED_CHANNELS  
             if (pEngineChannel->GetMute()) fFinalVolume = 0;  
 #endif  
   
             // process transition events (note on, note off & sustain pedal)  
             processTransitionEvents(itNoteEvent, iSubFragmentEnd);  
   
             // if the voice was killed in this subfragment, or if the  
             // filter EG is finished, switch EG1 to fade out stage  
             if ((itKillEvent && killPos <= iSubFragmentEnd) ||  
                 (SYNTHESIS_MODE_GET_FILTER(SynthesisMode) &&  
                  EG2.getSegmentType() == EGADSR::segment_end)) {  
                 EG1.enterFadeOutStage();  
                 itKillEvent = Pool<Event>::Iterator();  
             }  
   
             // process envelope generators  
             switch (EG1.getSegmentType()) {  
                 case EGADSR::segment_lin:  
                     fFinalVolume *= EG1.processLin();  
                     break;  
                 case EGADSR::segment_exp:  
                     fFinalVolume *= EG1.processExp();  
                     break;  
                 case EGADSR::segment_end:  
                     fFinalVolume *= EG1.getLevel();  
                     break; // noop  
             }  
             switch (EG2.getSegmentType()) {  
                 case EGADSR::segment_lin:  
                     fFinalCutoff *= EG2.processLin();  
                     break;  
                 case EGADSR::segment_exp:  
                     fFinalCutoff *= EG2.processExp();  
                     break;  
                 case EGADSR::segment_end:  
                     fFinalCutoff *= EG2.getLevel();  
                     break; // noop  
             }  
             if (EG3.active()) finalSynthesisParameters.fFinalPitch *= EG3.render();  
   
             // process low frequency oscillators  
             if (bLFO1Enabled) fFinalVolume *= (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);  
             }  
   
             // do we need resampling?  
             const float __PLUS_ONE_CENT  = 1.000577789506554859250142541782224725466f;  
             const float __MINUS_ONE_CENT = 0.9994225441413807496009516495583113737666f;  
             const bool bResamplingRequired = !(finalSynthesisParameters.fFinalPitch <= __PLUS_ONE_CENT &&  
                                                finalSynthesisParameters.fFinalPitch >= __MINUS_ONE_CENT);  
             SYNTHESIS_MODE_SET_INTERPOLATE(SynthesisMode, bResamplingRequired);  
   
             fFinalVolume = 1.0;  
             // prepare final synthesis parameters structure  
             finalSynthesisParameters.uiToGo            = iSubFragmentEnd - i;  
 #ifdef CONFIG_INTERPOLATE_VOLUME  
             finalSynthesisParameters.fFinalVolumeDeltaLeft  = 1;  
             finalSynthesisParameters.fFinalVolumeDeltaRight = 1;  
 #else  
             finalSynthesisParameters.fFinalVolumeLeft  =1;  
             finalSynthesisParameters.fFinalVolumeRight =1;  
 #endif  
             // render audio for one subfragment  
             //RunSynthesisFunction(SynthesisMode, &finalSynthesisParameters, &loop);  
   
             // stop the rendering if volume EG is finished  
             if (EG1.getSegmentType() == EGADSR::segment_end) break;  
   
             const double newPos = Pos + (iSubFragmentEnd - i) * finalSynthesisParameters.fFinalPitch;  
   
             // increment envelopes' positions  
             if (EG1.active()) {  
   
                 // if sample has a loop and loop start has been reached in this subfragment, send a special event to EG1 to let it finish the attack hold stage  
                 if (pRegion->SampleLoops && Pos <= pRegion->pSampleLoops[0].LoopStart && pRegion->pSampleLoops[0].LoopStart < newPos) {  
                     EG1.update(EGADSR::event_hold_end, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
                 } // TODO:  
   
                 EG1.increment(1);  
                 if (!EG1.toStageEndLeft()) EG1.update(EGADSR::event_stage_end, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
             }  
             if (EG2.active()) {  
                 EG2.increment(1);  
                 if (!EG2.toStageEndLeft()) EG2.update(EGADSR::event_stage_end, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);  
             }  
             EG3.increment(1);  
             if (!EG3.toEndLeft()) EG3.update(); // neutralize envelope coefficient if end reached  
   
             Pos = newPos;  
             i = iSubFragmentEnd;  
         }*/  
   
             int32_t* pSrc2 = NULL;  
             if((pSample->GetFrameSize() / pSample->GetChannelCount()) == 4) pSrc2 = (int32_t*)pSrc;  
             for(int j = 0; j < Samples; j++) {  
                 int lp, rp;  
                 if(pSample->GetChannelCount() == 1) {  
                     lp = (int)(finalSynthesisParameters.dPos + j);  
                     rp = (int)(finalSynthesisParameters.dPos + j);  
                 } else {  
                     lp = (int)(finalSynthesisParameters.dPos + j) * 2;  
                     rp = (int)(finalSynthesisParameters.dPos + j) * 2 + 1;  
                 }  
                 float left, right;  
                 if(pSrc2 != NULL) {  
                     left = pSrc2[lp]; right = pSrc2[rp];  
                 } else {  
                     left = pSrc[lp]; right = pSrc[rp];  
                 }  
                 float f = (pSrc2 == NULL ? 32768.0f : 32768.0f * 65536.0f);  
                 left /= f; right /= f;  
                 finalSynthesisParameters.pOutLeft[j] += left;  
                 finalSynthesisParameters.pOutRight[j] += right;  
             }  
             finalSynthesisParameters.dPos += Samples;  
338      }      }
339        
340      /** @brief Update current portamento position.      void Voice::SetSampleStartOffset() {
341       *          if (DiskVoice && RgnInfo.SampleStartOffset > pSample->MaxOffset) {
342       * Will be called when portamento mode is enabled to get the final              // The offset is applied to the RAM buffer
343       * portamento position of this active voice from where the next voice(s)              finalSynthesisParameters.dPos = 0;
344       * might continue to slide on.              Pos = 0;
345       *          } else {
346       * @param itNoteOffEvent - event which causes this voice to die soon              finalSynthesisParameters.dPos = RgnInfo.SampleStartOffset; // offset where we should start playback of sample
347       */              Pos = RgnInfo.SampleStartOffset;
     void Voice::UpdatePortamentoPos(Pool<Event>::Iterator& itNoteOffEvent) {  
         const float fFinalEG3Level = EG3.level(itNoteOffEvent->FragmentPos());  
         pEngineChannel->PortamentoPos = (float) MIDIKey + RTMath::FreqRatioToCents(fFinalEG3Level) * 0.01f;  
     }  
   
     /**  
      *  Immediately kill the voice. This method should not be used to kill  
      *  a normal, active voice, because it doesn't take care of things like  
      *  fading down the volume level to avoid clicks and regular processing  
      *  until the kill event actually occured!  
      *  
      * If it's necessary to know when the voice's disk stream was actually  
      * deleted, then one can set the optional @a bRequestNotification  
      * parameter and this method will then return the handle of the disk  
      * stream (unique identifier) and one can use this handle to poll the  
      * disk thread if this stream has been deleted. In any case this method  
      * will return immediately and will not block until the stream actually  
      * was deleted.  
      *  
      * @param bRequestNotification - (optional) whether the disk thread shall  
      *                                provide a notification once it deleted  
      *                               the respective disk stream  
      *                               (default=false)  
      * @returns handle to the voice's disk stream or @c Stream::INVALID_HANDLE  
      *          if the voice did not use a disk stream at all  
      * @see Kill()  
      */  
     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;  
348          }          }
         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  
   
         if (itTriggerEvent && itKillEvent->FragmentPos() <= itTriggerEvent->FragmentPos()) return;  
         this->itKillEvent = itKillEvent;  
349      }      }
350    
351  }} // namespace LinuxSampler::sfz  }} // namespace LinuxSampler::sfz
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