/[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 696 by persson, Sat Jul 16 19:37:52 2005 UTC revision 865 by persson, Sun May 14 07:15:52 2006 UTC
# Line 3  Line 3 
3   *   LinuxSampler - modular, streaming capable sampler                     *   *   LinuxSampler - modular, streaming capable sampler                     *
4   *                                                                         *   *                                                                         *
5   *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *   *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *
6   *   Copyright (C) 2005 Christian Schoenebeck                              *   *   Copyright (C) 2005, 2006 Christian Schoenebeck                        *
7   *                                                                         *   *                                                                         *
8   *   This program is free software; you can redistribute it and/or modify  *   *   This program is free software; you can redistribute it and/or modify  *
9   *   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 21 
21   *   MA  02111-1307  USA                                                   *   *   MA  02111-1307  USA                                                   *
22   ***************************************************************************/   ***************************************************************************/
23    
 #include "EGADSR.h"  
 #include "Manipulator.h"  
24  #include "../../common/Features.h"  #include "../../common/Features.h"
25  #include "Synthesizer.h"  #include "Synthesizer.h"
26    #include "Profiler.h"
27    
28  #include "Voice.h"  #include "Voice.h"
29    
# Line 32  namespace LinuxSampler { namespace gig { Line 31  namespace LinuxSampler { namespace gig {
31    
32      const float Voice::FILTER_CUTOFF_COEFF(CalculateFilterCutoffCoeff());      const float Voice::FILTER_CUTOFF_COEFF(CalculateFilterCutoffCoeff());
33    
     const int Voice::FILTER_UPDATE_MASK(CalculateFilterUpdateMask());  
   
34      float Voice::CalculateFilterCutoffCoeff() {      float Voice::CalculateFilterCutoffCoeff() {
35          return log(CONFIG_FILTER_CUTOFF_MIN / CONFIG_FILTER_CUTOFF_MAX);          return log(CONFIG_FILTER_CUTOFF_MAX / CONFIG_FILTER_CUTOFF_MIN);
     }  
   
     int Voice::CalculateFilterUpdateMask() {  
         if (CONFIG_FILTER_UPDATE_STEPS <= 0) return 0;  
         int power_of_two;  
         for (power_of_two = 0; 1<<power_of_two < CONFIG_FILTER_UPDATE_STEPS; power_of_two++);  
         return (1 << power_of_two) - 1;  
36      }      }
37    
38      Voice::Voice() {      Voice::Voice() {
39          pEngine     = NULL;          pEngine     = NULL;
40          pDiskThread = NULL;          pDiskThread = NULL;
41          PlaybackState = playback_state_end;          PlaybackState = playback_state_end;
42          pEG1   = NULL;          pLFO1 = new LFOUnsigned(1.0f);  // amplitude EG (0..1 range)
43          pEG2   = NULL;          pLFO2 = new LFOUnsigned(1.0f);  // filter EG (0..1 range)
44          pEG3   = NULL;          pLFO3 = new LFOSigned(1200.0f); // pitch EG (-1200..+1200 range)
         pVCAManipulator  = NULL;  
         pVCFCManipulator = NULL;  
         pVCOManipulator  = NULL;  
         pLFO1  = NULL;  
         pLFO2  = NULL;  
         pLFO3  = NULL;  
45          KeyGroup = 0;          KeyGroup = 0;
46          SynthesisMode = 0; // set all mode bits to 0 first          SynthesisMode = 0; // set all mode bits to 0 first
47          // select synthesis implementation (currently either pure C++ or MMX+SSE(1))          // select synthesis implementation (currently either pure C++ or MMX+SSE(1))
# Line 66  namespace LinuxSampler { namespace gig { Line 50  namespace LinuxSampler { namespace gig {
50          #else          #else
51          SYNTHESIS_MODE_SET_IMPLEMENTATION(SynthesisMode, false);          SYNTHESIS_MODE_SET_IMPLEMENTATION(SynthesisMode, false);
52          #endif          #endif
53          SYNTHESIS_MODE_SET_PROFILING(SynthesisMode, true);          SYNTHESIS_MODE_SET_PROFILING(SynthesisMode, Profiler::isEnabled());
54    
55          FilterLeft.Reset();          finalSynthesisParameters.filterLeft.Reset();
56          FilterRight.Reset();          finalSynthesisParameters.filterRight.Reset();
57      }      }
58    
59      Voice::~Voice() {      Voice::~Voice() {
         if (pEG1)  delete pEG1;  
         if (pEG2)  delete pEG2;  
         if (pEG3)  delete pEG3;  
60          if (pLFO1) delete pLFO1;          if (pLFO1) delete pLFO1;
61          if (pLFO2) delete pLFO2;          if (pLFO2) delete pLFO2;
62          if (pLFO3) delete pLFO3;          if (pLFO3) delete pLFO3;
         if (pVCAManipulator)  delete pVCAManipulator;  
         if (pVCFCManipulator) delete pVCFCManipulator;  
         if (pVCOManipulator)  delete pVCOManipulator;  
63      }      }
64    
65      void Voice::SetEngine(Engine* pEngine) {      void Voice::SetEngine(Engine* pEngine) {
66          this->pEngine = pEngine;          this->pEngine     = pEngine;
   
         // delete old objects  
         if (pEG1) delete pEG1;  
         if (pEG2) delete pEG2;  
         if (pEG3) delete pEG3;  
         if (pVCAManipulator)  delete pVCAManipulator;  
         if (pVCFCManipulator) delete pVCFCManipulator;  
         if (pVCOManipulator)  delete pVCOManipulator;  
         if (pLFO1) delete pLFO1;  
         if (pLFO2) delete pLFO2;  
         if (pLFO3) delete pLFO3;  
   
         // create new ones  
         pEG1   = new EGADSR(pEngine, Event::destination_vca);  
         pEG2   = new EGADSR(pEngine, Event::destination_vcfc);  
         pEG3   = new EGDecay(pEngine, Event::destination_vco);  
         pVCAManipulator  = new VCAManipulator(pEngine);  
         pVCFCManipulator = new VCFCManipulator(pEngine);  
         pVCOManipulator  = new VCOManipulator(pEngine);  
         pLFO1  = new LFO<gig::VCAManipulator>(0.0f, 1.0f, LFO<VCAManipulator>::propagation_top_down, pVCAManipulator, pEngine->pEventPool);  
         pLFO2  = new LFO<gig::VCFCManipulator>(0.0f, 1.0f, LFO<VCFCManipulator>::propagation_top_down, pVCFCManipulator, pEngine->pEventPool);  
         pLFO3  = new LFO<gig::VCOManipulator>(-1200.0f, 1200.0f, LFO<VCOManipulator>::propagation_middle_balanced, pVCOManipulator, pEngine->pEventPool); // +-1 octave (+-1200 cents) max.  
   
67          this->pDiskThread = pEngine->pDiskThread;          this->pDiskThread = pEngine->pDiskThread;
68          dmsg(6,("Voice::SetEngine()\n"));          dmsg(6,("Voice::SetEngine()\n"));
69      }      }
# Line 149  namespace LinuxSampler { namespace gig { Line 104  namespace LinuxSampler { namespace gig {
104          // calculate volume          // calculate volume
105          const double velocityAttenuation = pDimRgn->GetVelocityAttenuation(itNoteOnEvent->Param.Note.Velocity);          const double velocityAttenuation = pDimRgn->GetVelocityAttenuation(itNoteOnEvent->Param.Note.Velocity);
106    
107          Volume = velocityAttenuation / 32768.0f; // we downscale by 32768 to convert from int16 value range to DSP value range (which is -1.0..1.0)          float volume = velocityAttenuation / 32768.0f; // we downscale by 32768 to convert from int16 value range to DSP value range (which is -1.0..1.0)
108    
109          Volume *= pDimRgn->SampleAttenuation;          volume *= pDimRgn->SampleAttenuation;
110    
111          // the volume of release triggered samples depends on note length          // the volume of release triggered samples depends on note length
112          if (Type == type_release_trigger) {          if (Type == type_release_trigger) {
# Line 159  namespace LinuxSampler { namespace gig { Line 114  namespace LinuxSampler { namespace gig {
114                                       pEngineChannel->pMIDIKeyInfo[MIDIKey].NoteOnTime) / pEngine->SampleRate;                                       pEngineChannel->pMIDIKeyInfo[MIDIKey].NoteOnTime) / pEngine->SampleRate;
115              float attenuation = 1 - 0.01053 * (256 >> pDimRgn->ReleaseTriggerDecay) * noteLength;              float attenuation = 1 - 0.01053 * (256 >> pDimRgn->ReleaseTriggerDecay) * noteLength;
116              if (attenuation <= 0) return -1;              if (attenuation <= 0) return -1;
117              Volume *= attenuation;              volume *= attenuation;
118          }          }
119    
120          // select channel mode (mono or stereo)          // select channel mode (mono or stereo)
121          SYNTHESIS_MODE_SET_CHANNELS(SynthesisMode, pSample->Channels == 2);          SYNTHESIS_MODE_SET_CHANNELS(SynthesisMode, pSample->Channels == 2);
122    
123          // get starting crossfade volume level          // get starting crossfade volume level
124            float crossfadeVolume;
125          switch (pDimRgn->AttenuationController.type) {          switch (pDimRgn->AttenuationController.type) {
126              case ::gig::attenuation_ctrl_t::type_channelaftertouch:              case ::gig::attenuation_ctrl_t::type_channelaftertouch:
127                  CrossfadeVolume = 1.0f; //TODO: aftertouch not supported yet                  crossfadeVolume = 1.0f; //TODO: aftertouch not supported yet
128                  break;                  break;
129              case ::gig::attenuation_ctrl_t::type_velocity:              case ::gig::attenuation_ctrl_t::type_velocity:
130                  CrossfadeVolume = CrossfadeAttenuation(itNoteOnEvent->Param.Note.Velocity);                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(itNoteOnEvent->Param.Note.Velocity)];
131                  break;                  break;
132              case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate              case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate
133                  CrossfadeVolume = CrossfadeAttenuation(pEngineChannel->ControllerTable[pDimRgn->AttenuationController.controller_number]);                  crossfadeVolume = Engine::CrossfadeCurve[CrossfadeAttenuation(pEngineChannel->ControllerTable[pDimRgn->AttenuationController.controller_number])];
134                  break;                  break;
135              case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined              case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined
136              default:              default:
137                  CrossfadeVolume = 1.0f;                  crossfadeVolume = 1.0f;
138          }          }
139    
140          PanLeft  = 1.0f - float(RTMath::Max(pDimRgn->Pan, 0)) /  63.0f;          VolumeLeft  = volume * Engine::PanCurve[64 - pDimRgn->Pan];
141          PanRight = 1.0f - float(RTMath::Min(pDimRgn->Pan, 0)) / -64.0f;          VolumeRight = volume * Engine::PanCurve[64 + pDimRgn->Pan];
142    
143          Pos = pDimRgn->SampleStartOffset; // offset where we should start playback of sample (0 - 2000 sample points)          float subfragmentRate = pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE;
144            CrossfadeSmoother.trigger(crossfadeVolume, subfragmentRate);
145            VolumeSmoother.trigger(pEngineChannel->GlobalVolume, subfragmentRate);
146            PanLeftSmoother.trigger(pEngineChannel->GlobalPanLeft, subfragmentRate);
147            PanRightSmoother.trigger(pEngineChannel->GlobalPanRight, subfragmentRate);
148    
149            finalSynthesisParameters.dPos = pDimRgn->SampleStartOffset; // offset where we should start playback of sample (0 - 2000 sample points)
150            Pos = pDimRgn->SampleStartOffset;
151    
152          // Check if the sample needs disk streaming or is too short for that          // Check if the sample needs disk streaming or is too short for that
153          long cachedsamples = pSample->GetCache().Size / pSample->FrameSize;          long cachedsamples = pSample->GetCache().Size / pSample->FrameSize;
154          DiskVoice          = cachedsamples < pSample->SamplesTotal;          DiskVoice          = cachedsamples < pSample->SamplesTotal;
155    
156            const DLS::sample_loop_t& loopinfo = pDimRgn->pSampleLoops[0];
157    
158          if (DiskVoice) { // voice to be streamed from disk          if (DiskVoice) { // voice to be streamed from disk
159              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)              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)
160    
161              // check if there's a loop defined which completely fits into the cached (RAM) part of the sample              // check if there's a loop defined which completely fits into the cached (RAM) part of the sample
162              if (pSample->Loops && pSample->LoopEnd <= MaxRAMPos) {              RAMLoop = (pDimRgn->SampleLoops && (loopinfo.LoopStart + loopinfo.LoopLength) <= MaxRAMPos);
                 RAMLoop        = true;  
                 LoopCyclesLeft = pSample->LoopPlayCount;  
             }  
             else RAMLoop = false;  
163    
164              if (pDiskThread->OrderNewStream(&DiskStreamRef, pSample, MaxRAMPos, !RAMLoop) < 0) {              if (pDiskThread->OrderNewStream(&DiskStreamRef, pDimRgn, MaxRAMPos, !RAMLoop) < 0) {
165                  dmsg(1,("Disk stream order failed!\n"));                  dmsg(1,("Disk stream order failed!\n"));
166                  KillImmediately();                  KillImmediately();
167                  return -1;                  return -1;
# Line 209  namespace LinuxSampler { namespace gig { Line 170  namespace LinuxSampler { namespace gig {
170          }          }
171          else { // RAM only voice          else { // RAM only voice
172              MaxRAMPos = cachedsamples;              MaxRAMPos = cachedsamples;
173              if (pSample->Loops) {              RAMLoop = (pDimRgn->SampleLoops != 0);
                 RAMLoop        = true;  
                 LoopCyclesLeft = pSample->LoopPlayCount;  
             }  
             else RAMLoop = false;  
174              dmsg(4,("RAM only voice launched (Looping: %s)\n", (RAMLoop) ? "yes" : "no"));              dmsg(4,("RAM only voice launched (Looping: %s)\n", (RAMLoop) ? "yes" : "no"));
175          }          }
176            if (RAMLoop) {
177                loop.uiTotalCycles = pSample->LoopPlayCount;
178                loop.uiCyclesLeft  = pSample->LoopPlayCount;
179                loop.uiStart       = loopinfo.LoopStart;
180                loop.uiEnd         = loopinfo.LoopStart + loopinfo.LoopLength;
181                loop.uiSize        = loopinfo.LoopLength;
182            }
183    
184          // calculate initial pitch value          // calculate initial pitch value
185          {          {
186              double pitchbasecents = pDimRgn->FineTune + (int) pEngine->ScaleTuning[MIDIKey % 12];              double pitchbasecents = pDimRgn->FineTune + (int) pEngine->ScaleTuning[MIDIKey % 12];
187              if (pDimRgn->PitchTrack) pitchbasecents += (MIDIKey - (int) pDimRgn->UnityNote) * 100;              if (pDimRgn->PitchTrack) pitchbasecents += (MIDIKey - (int) pDimRgn->UnityNote) * 100;
188              this->PitchBase = RTMath::CentsToFreqRatio(pitchbasecents) * (double(pSample->SamplesPerSecond) / double(pEngine->pAudioOutputDevice->SampleRate()));              this->PitchBase = RTMath::CentsToFreqRatio(pitchbasecents) * (double(pSample->SamplesPerSecond) / double(pEngine->SampleRate));
189              this->PitchBend = RTMath::CentsToFreqRatio(((double) PitchBend / 8192.0) * 200.0); // pitchbend wheel +-2 semitones = 200 cents              this->PitchBend = RTMath::CentsToFreqRatio(((double) PitchBend / 8192.0) * 200.0); // pitchbend wheel +-2 semitones = 200 cents
190          }          }
191    
# Line 257  namespace LinuxSampler { namespace gig { Line 220  namespace LinuxSampler { namespace gig {
220              double eg1decay   = (pDimRgn->EG1ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pDimRgn->EG1ControllerDecayInfluence)   * eg1controllervalue : 1.0;              double eg1decay   = (pDimRgn->EG1ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pDimRgn->EG1ControllerDecayInfluence)   * eg1controllervalue : 1.0;
221              double eg1release = (pDimRgn->EG1ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pDimRgn->EG1ControllerReleaseInfluence) * eg1controllervalue : 1.0;              double eg1release = (pDimRgn->EG1ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pDimRgn->EG1ControllerReleaseInfluence) * eg1controllervalue : 1.0;
222    
223              pEG1->Trigger(pDimRgn->EG1PreAttack,              EG1.trigger(pDimRgn->EG1PreAttack,
224                            pDimRgn->EG1Attack * eg1attack,                          pDimRgn->EG1Attack * eg1attack,
225                            pDimRgn->EG1Hold,                          pDimRgn->EG1Hold,
226                            pSample->LoopStart,                          pDimRgn->EG1Decay1 * eg1decay * velrelease,
227                            pDimRgn->EG1Decay1 * eg1decay * velrelease,                          pDimRgn->EG1Decay2 * eg1decay * velrelease,
228                            pDimRgn->EG1Decay2 * eg1decay * velrelease,                          pDimRgn->EG1InfiniteSustain,
229                            pDimRgn->EG1InfiniteSustain,                          pDimRgn->EG1Sustain,
230                            pDimRgn->EG1Sustain,                          pDimRgn->EG1Release * eg1release * velrelease,
231                            pDimRgn->EG1Release * eg1release * velrelease,                          velocityAttenuation,
232                            // the SSE synthesis implementation requires                          pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
233                            // the vca start to be 16 byte aligned          }
234                            SYNTHESIS_MODE_GET_IMPLEMENTATION(SynthesisMode) ?  
235                            Delay & 0xfffffffc : Delay,  #ifdef CONFIG_INTERPOLATE_VOLUME
236                            velocityAttenuation);          // setup initial volume in synthesis parameters
237          }  #ifdef CONFIG_PROCESS_MUTED_CHANNELS
238            if (pEngineChannel->GetMute()) {
239                finalSynthesisParameters.fFinalVolumeLeft  = 0;
240                finalSynthesisParameters.fFinalVolumeRight = 0;
241            }
242            else
243    #else
244            {
245                float finalVolume = pEngineChannel->GlobalVolume * crossfadeVolume * EG1.getLevel();
246    
247                finalSynthesisParameters.fFinalVolumeLeft  = finalVolume * VolumeLeft  * pEngineChannel->GlobalPanLeft;
248                finalSynthesisParameters.fFinalVolumeRight = finalVolume * VolumeRight * pEngineChannel->GlobalPanRight;
249            }
250    #endif
251    #endif
252    
253          // setup EG 2 (VCF Cutoff EG)          // setup EG 2 (VCF Cutoff EG)
254          {          {
# Line 299  namespace LinuxSampler { namespace gig { Line 275  namespace LinuxSampler { namespace gig {
275              double eg2decay   = (pDimRgn->EG2ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pDimRgn->EG2ControllerDecayInfluence)   * eg2controllervalue : 1.0;              double eg2decay   = (pDimRgn->EG2ControllerDecayInfluence)   ? 1 + 0.00775 * (double) (1 << pDimRgn->EG2ControllerDecayInfluence)   * eg2controllervalue : 1.0;
276              double eg2release = (pDimRgn->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pDimRgn->EG2ControllerReleaseInfluence) * eg2controllervalue : 1.0;              double eg2release = (pDimRgn->EG2ControllerReleaseInfluence) ? 1 + 0.00775 * (double) (1 << pDimRgn->EG2ControllerReleaseInfluence) * eg2controllervalue : 1.0;
277    
278              pEG2->Trigger(pDimRgn->EG2PreAttack,              EG2.trigger(pDimRgn->EG2PreAttack,
279                            pDimRgn->EG2Attack * eg2attack,                          pDimRgn->EG2Attack * eg2attack,
280                            false,                          false,
281                            pSample->LoopStart,                          pDimRgn->EG2Decay1 * eg2decay * velrelease,
282                            pDimRgn->EG2Decay1 * eg2decay * velrelease,                          pDimRgn->EG2Decay2 * eg2decay * velrelease,
283                            pDimRgn->EG2Decay2 * eg2decay * velrelease,                          pDimRgn->EG2InfiniteSustain,
284                            pDimRgn->EG2InfiniteSustain,                          pDimRgn->EG2Sustain,
285                            pDimRgn->EG2Sustain,                          pDimRgn->EG2Release * eg2release * velrelease,
286                            pDimRgn->EG2Release * eg2release * velrelease,                          velocityAttenuation,
287                            Delay,                          pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
                           velocityAttenuation);  
288          }          }
289    
290    
291          // setup EG 3 (VCO EG)          // setup EG 3 (VCO EG)
292          {          {
293            double eg3depth = RTMath::CentsToFreqRatio(pDimRgn->EG3Depth);              // if portamento mode is on, we dedicate EG3 purely for portamento, otherwise if portamento is off we do as told by the patch
294            pEG3->Trigger(eg3depth, pDimRgn->EG3Attack, Delay);              bool  bPortamento = pEngineChannel->PortamentoMode && pEngineChannel->PortamentoPos >= 0.0f;
295                float eg3depth = (bPortamento)
296                                     ? RTMath::CentsToFreqRatio((pEngineChannel->PortamentoPos - (float) MIDIKey) * 100)
297                                     : RTMath::CentsToFreqRatio(pDimRgn->EG3Depth);
298                float eg3time = (bPortamento)
299                                    ? pEngineChannel->PortamentoTime
300                                    : pDimRgn->EG3Attack;
301                EG3.trigger(eg3depth, eg3time, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
302                dmsg(5,("PortamentoPos=%f, depth=%f, time=%f\n", pEngineChannel->PortamentoPos, eg3depth, eg3time));
303          }          }
304    
305    
# Line 354  namespace LinuxSampler { namespace gig { Line 337  namespace LinuxSampler { namespace gig {
337                      pLFO1->ExtController = 0; // no external controller                      pLFO1->ExtController = 0; // no external controller
338                      bLFO1Enabled         = false;                      bLFO1Enabled         = false;
339              }              }
340              if (bLFO1Enabled) pLFO1->Trigger(pDimRgn->LFO1Frequency,              if (bLFO1Enabled) {
341                                               lfo1_internal_depth,                  pLFO1->trigger(pDimRgn->LFO1Frequency,
342                                               pDimRgn->LFO1ControlDepth,                                 start_level_max,
343                                               pEngineChannel->ControllerTable[pLFO1->ExtController],                                 lfo1_internal_depth,
344                                               pDimRgn->LFO1FlipPhase,                                 pDimRgn->LFO1ControlDepth,
345                                               pEngine->SampleRate,                                 pDimRgn->LFO1FlipPhase,
346                                               Delay);                                 pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
347                    pLFO1->update(pLFO1->ExtController ? pEngineChannel->ControllerTable[pLFO1->ExtController] : 0);
348                }
349          }          }
350    
351    
# Line 398  namespace LinuxSampler { namespace gig { Line 383  namespace LinuxSampler { namespace gig {
383                      pLFO2->ExtController = 0; // no external controller                      pLFO2->ExtController = 0; // no external controller
384                      bLFO2Enabled         = false;                      bLFO2Enabled         = false;
385              }              }
386              if (bLFO2Enabled) pLFO2->Trigger(pDimRgn->LFO2Frequency,              if (bLFO2Enabled) {
387                                               lfo2_internal_depth,                  pLFO2->trigger(pDimRgn->LFO2Frequency,
388                                               pDimRgn->LFO2ControlDepth,                                 start_level_max,
389                                               pEngineChannel->ControllerTable[pLFO2->ExtController],                                 lfo2_internal_depth,
390                                               pDimRgn->LFO2FlipPhase,                                 pDimRgn->LFO2ControlDepth,
391                                               pEngine->SampleRate,                                 pDimRgn->LFO2FlipPhase,
392                                               Delay);                                 pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
393                    pLFO2->update(pLFO2->ExtController ? pEngineChannel->ControllerTable[pLFO2->ExtController] : 0);
394                }
395          }          }
396    
397    
# Line 442  namespace LinuxSampler { namespace gig { Line 429  namespace LinuxSampler { namespace gig {
429                      pLFO3->ExtController = 0; // no external controller                      pLFO3->ExtController = 0; // no external controller
430                      bLFO3Enabled         = false;                      bLFO3Enabled         = false;
431              }              }
432              if (bLFO3Enabled) pLFO3->Trigger(pDimRgn->LFO3Frequency,              if (bLFO3Enabled) {
433                                               lfo3_internal_depth,                  pLFO3->trigger(pDimRgn->LFO3Frequency,
434                                               pDimRgn->LFO3ControlDepth,                                 start_level_mid,
435                                               pEngineChannel->ControllerTable[pLFO3->ExtController],                                 lfo3_internal_depth,
436                                               false,                                 pDimRgn->LFO3ControlDepth,
437                                               pEngine->SampleRate,                                 false,
438                                               Delay);                                 pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
439                    pLFO3->update(pLFO3->ExtController ? pEngineChannel->ControllerTable[pLFO3->ExtController] : 0);
440                }
441          }          }
442    
443    
# Line 521  namespace LinuxSampler { namespace gig { Line 510  namespace LinuxSampler { namespace gig {
510              #endif // CONFIG_OVERRIDE_RESONANCE_CTRL              #endif // CONFIG_OVERRIDE_RESONANCE_CTRL
511    
512              #ifndef CONFIG_OVERRIDE_FILTER_TYPE              #ifndef CONFIG_OVERRIDE_FILTER_TYPE
513              FilterLeft.SetType(pDimRgn->VCFType);              finalSynthesisParameters.filterLeft.SetType(pDimRgn->VCFType);
514              FilterRight.SetType(pDimRgn->VCFType);              finalSynthesisParameters.filterRight.SetType(pDimRgn->VCFType);
515              #else // override filter type              #else // override filter type
516              FilterLeft.SetType(CONFIG_OVERRIDE_FILTER_TYPE);              FilterLeft.SetType(CONFIG_OVERRIDE_FILTER_TYPE);
517              FilterRight.SetType(CONFIG_OVERRIDE_FILTER_TYPE);              FilterRight.SetType(CONFIG_OVERRIDE_FILTER_TYPE);
# Line 532  namespace LinuxSampler { namespace gig { Line 521  namespace LinuxSampler { namespace gig {
521              VCFResonanceCtrl.value = pEngineChannel->ControllerTable[VCFResonanceCtrl.controller];              VCFResonanceCtrl.value = pEngineChannel->ControllerTable[VCFResonanceCtrl.controller];
522    
523              // calculate cutoff frequency              // calculate cutoff frequency
524              float cutoff = (!VCFCutoffCtrl.controller)              float cutoff = pDimRgn->GetVelocityCutoff(itNoteOnEvent->Param.Note.Velocity);
                 ? exp((float) (127 - itNoteOnEvent->Param.Note.Velocity) * (float) pDimRgn->VCFVelocityScale * 6.2E-5f * FILTER_CUTOFF_COEFF) * CONFIG_FILTER_CUTOFF_MAX  
                 : exp((float) VCFCutoffCtrl.value * 0.00787402f * FILTER_CUTOFF_COEFF) * CONFIG_FILTER_CUTOFF_MAX;  
   
             // calculate resonance  
             float resonance = (float) VCFResonanceCtrl.value * 0.00787f;   // 0.0..1.0  
525              if (pDimRgn->VCFKeyboardTracking) {              if (pDimRgn->VCFKeyboardTracking) {
526                  resonance += (float) (itNoteOnEvent->Param.Note.Key - pDimRgn->VCFKeyboardTrackingBreakpoint) * 0.00787f;                  cutoff *= exp((itNoteOnEvent->Param.Note.Key - pDimRgn->VCFKeyboardTrackingBreakpoint) * 0.057762265f); // (ln(2) / 12)
527              }              }
528              Constrain(resonance, 0.0, 1.0); // correct resonance if outside allowed value range (0.0..1.0)              CutoffBase = cutoff;
529    
530              VCFCutoffCtrl.fvalue    = cutoff - CONFIG_FILTER_CUTOFF_MIN;              int cvalue;
531              VCFResonanceCtrl.fvalue = resonance;              if (VCFCutoffCtrl.controller) {
532                    cvalue = pEngineChannel->ControllerTable[VCFCutoffCtrl.controller];
533                    if (pDimRgn->VCFCutoffControllerInvert) cvalue = 127 - cvalue;
534                    // VCFVelocityScale in this case means Minimum cutoff
535                    if (cvalue < pDimRgn->VCFVelocityScale) cvalue = pDimRgn->VCFVelocityScale;
536                }
537                else {
538                    cvalue = pDimRgn->VCFCutoff;
539                }
540                cutoff *= float(cvalue) * 0.00787402f; // (1 / 127)
541                if (cutoff > 1.0) cutoff = 1.0;
542                cutoff = (cutoff < 0.5 ? cutoff * 4826 - 1 : cutoff * 5715 - 449);
543                if (cutoff < 1.0) cutoff = 1.0;
544    
545              FilterUpdateCounter = -1;              // calculate resonance
546                float resonance = (float) (VCFResonanceCtrl.controller ? VCFResonanceCtrl.value : pDimRgn->VCFResonance) * 0.00787f; // 0.0..1.0
547    
548                VCFCutoffCtrl.fvalue    = cutoff - 1.0;
549                VCFResonanceCtrl.fvalue = resonance;
550          }          }
551          else {          else {
552              VCFCutoffCtrl.controller    = 0;              VCFCutoffCtrl.controller    = 0;
# Line 570  namespace LinuxSampler { namespace gig { Line 570  namespace LinuxSampler { namespace gig {
570      void Voice::Render(uint Samples) {      void Voice::Render(uint Samples) {
571    
572          // select default values for synthesis mode bits          // select default values for synthesis mode bits
         SYNTHESIS_MODE_SET_INTERPOLATE(SynthesisMode, (PitchBase * PitchBend) != 1.0f);  
         SYNTHESIS_MODE_SET_CONSTPITCH(SynthesisMode, true);  
573          SYNTHESIS_MODE_SET_LOOP(SynthesisMode, false);          SYNTHESIS_MODE_SET_LOOP(SynthesisMode, false);
574    
         // Reset the synthesis parameter matrix  
   
         pEngine->ResetSynthesisParameters(Event::destination_vca, this->Volume * this->CrossfadeVolume * pEngineChannel->GlobalVolume);  
         pEngine->ResetSynthesisParameters(Event::destination_vco, this->PitchBase);  
         pEngine->ResetSynthesisParameters(Event::destination_vcfc, VCFCutoffCtrl.fvalue);  
         pEngine->ResetSynthesisParameters(Event::destination_vcfr, VCFResonanceCtrl.fvalue);  
   
         // Apply events to the synthesis parameter matrix  
         ProcessEvents(Samples);  
   
         // Let all modulators write their parameter changes to the synthesis parameter matrix for the current audio fragment  
         pEG1->Process(Samples, pEngineChannel->pMIDIKeyInfo[MIDIKey].pEvents, itTriggerEvent, this->Pos, this->PitchBase * this->PitchBend, itKillEvent);  
         pEG2->Process(Samples, pEngineChannel->pMIDIKeyInfo[MIDIKey].pEvents, itTriggerEvent, this->Pos, this->PitchBase * this->PitchBend);  
         if (pEG3->Process(Samples)) { // if pitch EG is active  
             SYNTHESIS_MODE_SET_INTERPOLATE(SynthesisMode, true);  
             SYNTHESIS_MODE_SET_CONSTPITCH(SynthesisMode, false);  
         }  
         if (bLFO1Enabled) pLFO1->Process(Samples);  
         if (bLFO2Enabled) pLFO2->Process(Samples);  
         if (bLFO3Enabled) {  
             if (pLFO3->Process(Samples)) { // if pitch LFO modulation is active  
                 SYNTHESIS_MODE_SET_INTERPOLATE(SynthesisMode, true);  
                 SYNTHESIS_MODE_SET_CONSTPITCH(SynthesisMode, false);  
             }  
         }  
   
         if (SYNTHESIS_MODE_GET_FILTER(SynthesisMode))  
             CalculateBiquadParameters(Samples); // calculate the final biquad filter parameters  
   
575          switch (this->PlaybackState) {          switch (this->PlaybackState) {
576    
577              case playback_state_init:              case playback_state_init:
# Line 617  namespace LinuxSampler { namespace gig { Line 586  namespace LinuxSampler { namespace gig {
586    
587                      if (DiskVoice) {                      if (DiskVoice) {
588                          // check if we reached the allowed limit of the sample RAM cache                          // check if we reached the allowed limit of the sample RAM cache
589                          if (Pos > MaxRAMPos) {                          if (finalSynthesisParameters.dPos > MaxRAMPos) {
590                              dmsg(5,("Voice: switching to disk playback (Pos=%f)\n", Pos));                              dmsg(5,("Voice: switching to disk playback (Pos=%f)\n", finalSynthesisParameters.dPos));
591                              this->PlaybackState = playback_state_disk;                              this->PlaybackState = playback_state_disk;
592                          }                          }
593                      }                      } else if (finalSynthesisParameters.dPos >= pSample->GetCache().Size / pSample->FrameSize) {
                     else if (Pos >= pSample->GetCache().Size / pSample->FrameSize) {  
594                          this->PlaybackState = playback_state_end;                          this->PlaybackState = playback_state_end;
595                      }                      }
596                  }                  }
# Line 637  namespace LinuxSampler { namespace gig { Line 605  namespace LinuxSampler { namespace gig {
605                              KillImmediately();                              KillImmediately();
606                              return;                              return;
607                          }                          }
608                          DiskStreamRef.pStream->IncrementReadPos(pSample->Channels * (int(Pos) - MaxRAMPos));                          DiskStreamRef.pStream->IncrementReadPos(pSample->Channels * (int(finalSynthesisParameters.dPos) - MaxRAMPos));
609                          Pos -= int(Pos);                          finalSynthesisParameters.dPos -= int(finalSynthesisParameters.dPos);
610                          RealSampleWordsLeftToRead = -1; // -1 means no silence has been added yet                          RealSampleWordsLeftToRead = -1; // -1 means no silence has been added yet
611                      }                      }
612    
# Line 659  namespace LinuxSampler { namespace gig { Line 627  namespace LinuxSampler { namespace gig {
627                      // render current audio fragment                      // render current audio fragment
628                      Synthesize(Samples, ptr, Delay);                      Synthesize(Samples, ptr, Delay);
629    
630                      const int iPos = (int) Pos;                      const int iPos = (int) finalSynthesisParameters.dPos;
631                      const int readSampleWords = iPos * pSample->Channels; // amount of sample words actually been read                      const int readSampleWords = iPos * pSample->Channels; // amount of sample words actually been read
632                      DiskStreamRef.pStream->IncrementReadPos(readSampleWords);                      DiskStreamRef.pStream->IncrementReadPos(readSampleWords);
633                      Pos -= iPos; // just keep fractional part of Pos                      finalSynthesisParameters.dPos -= iPos; // just keep fractional part of playback position
634    
635                      // change state of voice to 'end' if we really reached the end of the sample data                      // change state of voice to 'end' if we really reached the end of the sample data
636                      if (RealSampleWordsLeftToRead >= 0) {                      if (RealSampleWordsLeftToRead >= 0) {
# Line 677  namespace LinuxSampler { namespace gig { Line 645  namespace LinuxSampler { namespace gig {
645                  break;                  break;
646          }          }
647    
         // Reset synthesis event lists (except VCO, as VCO events apply channel wide currently)  
         pEngineChannel->pSynthesisEvents[Event::destination_vca]->clear();  
         pEngineChannel->pSynthesisEvents[Event::destination_vcfc]->clear();  
         pEngineChannel->pSynthesisEvents[Event::destination_vcfr]->clear();  
   
648          // Reset delay          // Reset delay
649          Delay = 0;          Delay = 0;
650    
651          itTriggerEvent = Pool<Event>::Iterator();          itTriggerEvent = Pool<Event>::Iterator();
652    
653          // If sample stream or release stage finished, kill the voice          // If sample stream or release stage finished, kill the voice
654          if (PlaybackState == playback_state_end || pEG1->GetStage() == EGADSR::stage_end) KillImmediately();          if (PlaybackState == playback_state_end || EG1.getSegmentType() == EGADSR::segment_end) KillImmediately();
655      }      }
656    
657      /**      /**
# Line 696  namespace LinuxSampler { namespace gig { Line 659  namespace LinuxSampler { namespace gig {
659       *  suspended / not running.       *  suspended / not running.
660       */       */
661      void Voice::Reset() {      void Voice::Reset() {
662          pLFO1->Reset();          finalSynthesisParameters.filterLeft.Reset();
663          pLFO2->Reset();          finalSynthesisParameters.filterRight.Reset();
         pLFO3->Reset();  
         FilterLeft.Reset();  
         FilterRight.Reset();  
664          DiskStreamRef.pStream = NULL;          DiskStreamRef.pStream = NULL;
665          DiskStreamRef.hStream = 0;          DiskStreamRef.hStream = 0;
666          DiskStreamRef.State   = Stream::state_unused;          DiskStreamRef.State   = Stream::state_unused;
# Line 711  namespace LinuxSampler { namespace gig { Line 671  namespace LinuxSampler { namespace gig {
671      }      }
672    
673      /**      /**
674       *  Process the control change event lists of the engine for the current       * Process given list of MIDI note on, note off and sustain pedal events
675       *  audio fragment. Event values will be applied to the synthesis parameter       * for the given time.
      *  matrix.  
676       *       *
677       *  @param Samples - number of samples to be rendered in this audio fragment cycle       * @param itEvent - iterator pointing to the next event to be processed
678         * @param End     - youngest time stamp where processing should be stopped
679       */       */
680      void Voice::ProcessEvents(uint Samples) {      void Voice::processTransitionEvents(RTList<Event>::Iterator& itEvent, uint End) {
681            for (; itEvent && itEvent->FragmentPos() <= End; ++itEvent) {
682                if (itEvent->Type == Event::type_release) {
683                    EG1.update(EGADSR::event_release, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
684                    EG2.update(EGADSR::event_release, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
685                } else if (itEvent->Type == Event::type_cancel_release) {
686                    EG1.update(EGADSR::event_cancel_release, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
687                    EG2.update(EGADSR::event_cancel_release, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
688                }
689            }
690        }
691    
692          // dispatch control change events      /**
693          RTList<Event>::Iterator itCCEvent = pEngineChannel->pCCEvents->first();       * Process given list of MIDI control change and pitch bend events for
694          if (Delay) { // skip events that happened before this voice was triggered       * the given time.
695              while (itCCEvent && itCCEvent->FragmentPos() <= Delay) ++itCCEvent;       *
696          }       * @param itEvent - iterator pointing to the next event to be processed
697          while (itCCEvent) {       * @param End     - youngest time stamp where processing should be stopped
698              if (itCCEvent->Param.CC.Controller) { // if valid MIDI controller       */
699                  if (itCCEvent->Param.CC.Controller == VCFCutoffCtrl.controller) {      void Voice::processCCEvents(RTList<Event>::Iterator& itEvent, uint End) {
700                      *pEngineChannel->pSynthesisEvents[Event::destination_vcfc]->allocAppend() = *itCCEvent;          for (; itEvent && itEvent->FragmentPos() <= End; ++itEvent) {
701                  }              if (itEvent->Type == Event::type_control_change &&
702                  if (itCCEvent->Param.CC.Controller == VCFResonanceCtrl.controller) {                  itEvent->Param.CC.Controller) { // if (valid) MIDI control change event
703                      *pEngineChannel->pSynthesisEvents[Event::destination_vcfr]->allocAppend() = *itCCEvent;                  if (itEvent->Param.CC.Controller == VCFCutoffCtrl.controller) {
704                        processCutoffEvent(itEvent);
705                    }
706                    if (itEvent->Param.CC.Controller == VCFResonanceCtrl.controller) {
707                        processResonanceEvent(itEvent);
708                  }                  }
709                  if (itCCEvent->Param.CC.Controller == pLFO1->ExtController) {                  if (itEvent->Param.CC.Controller == pLFO1->ExtController) {
710                      pLFO1->SendEvent(itCCEvent);                      pLFO1->update(itEvent->Param.CC.Value);
711                  }                  }
712                  if (itCCEvent->Param.CC.Controller == pLFO2->ExtController) {                  if (itEvent->Param.CC.Controller == pLFO2->ExtController) {
713                      pLFO2->SendEvent(itCCEvent);                      pLFO2->update(itEvent->Param.CC.Value);
714                  }                  }
715                  if (itCCEvent->Param.CC.Controller == pLFO3->ExtController) {                  if (itEvent->Param.CC.Controller == pLFO3->ExtController) {
716                      pLFO3->SendEvent(itCCEvent);                      pLFO3->update(itEvent->Param.CC.Value);
717                  }                  }
718                  if (pDimRgn->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&                  if (pDimRgn->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&
719                      itCCEvent->Param.CC.Controller == pDimRgn->AttenuationController.controller_number) { // if crossfade event                      itEvent->Param.CC.Controller == pDimRgn->AttenuationController.controller_number) {
720                      *pEngineChannel->pSynthesisEvents[Event::destination_vca]->allocAppend() = *itCCEvent;                      CrossfadeSmoother.update(Engine::CrossfadeCurve[CrossfadeAttenuation(itEvent->Param.CC.Value)]);
721                  }                  }
722                    if (itEvent->Param.CC.Controller == 7) { // volume
723                        VolumeSmoother.update(Engine::VolumeCurve[itEvent->Param.CC.Value] * CONFIG_GLOBAL_ATTENUATION);
724                    } else if (itEvent->Param.CC.Controller == 10) { // panpot
725                        PanLeftSmoother.update(Engine::PanCurve[128 - itEvent->Param.CC.Value]);
726                        PanRightSmoother.update(Engine::PanCurve[itEvent->Param.CC.Value]);
727                    }
728                } else if (itEvent->Type == Event::type_pitchbend) { // if pitch bend event
729                    processPitchEvent(itEvent);
730              }              }
731            }
732        }
733    
734        void Voice::processPitchEvent(RTList<Event>::Iterator& itEvent) {
735            const float pitch = RTMath::CentsToFreqRatio(((double) itEvent->Param.Pitch.Pitch / 8192.0) * 200.0); // +-two semitones = +-200 cents
736            finalSynthesisParameters.fFinalPitch *= pitch;
737            PitchBend = pitch;
738        }
739    
740        void Voice::processCutoffEvent(RTList<Event>::Iterator& itEvent) {
741            int ccvalue = itEvent->Param.CC.Value;
742            if (VCFCutoffCtrl.value == ccvalue) return;
743            VCFCutoffCtrl.value == ccvalue;
744            if (pDimRgn->VCFCutoffControllerInvert)  ccvalue = 127 - ccvalue;
745            if (ccvalue < pDimRgn->VCFVelocityScale) ccvalue = pDimRgn->VCFVelocityScale;
746            float cutoff = CutoffBase * float(ccvalue) * 0.00787402f; // (1 / 127)
747            if (cutoff > 1.0) cutoff = 1.0;
748            cutoff = (cutoff < 0.5 ? cutoff * 4826 - 1 : cutoff * 5715 - 449);
749            if (cutoff < 1.0) cutoff = 1.0;
750    
751            VCFCutoffCtrl.fvalue = cutoff - 1.0; // needed for initialization of fFinalCutoff next time
752            fFinalCutoff = cutoff;
753        }
754    
755        void Voice::processResonanceEvent(RTList<Event>::Iterator& itEvent) {
756            // convert absolute controller value to differential
757            const int ctrldelta = itEvent->Param.CC.Value - VCFResonanceCtrl.value;
758            VCFResonanceCtrl.value = itEvent->Param.CC.Value;
759            const float resonancedelta = (float) ctrldelta * 0.00787f; // 0.0..1.0
760            fFinalResonance += resonancedelta;
761            // needed for initialization of parameter
762            VCFResonanceCtrl.fvalue = itEvent->Param.CC.Value * 0.00787f;
763        }
764    
765        /**
766         *  Synthesizes the current audio fragment for this voice.
767         *
768         *  @param Samples - number of sample points to be rendered in this audio
769         *                   fragment cycle
770         *  @param pSrc    - pointer to input sample data
771         *  @param Skip    - number of sample points to skip in output buffer
772         */
773        void Voice::Synthesize(uint Samples, sample_t* pSrc, uint Skip) {
774            finalSynthesisParameters.pOutLeft  = &pEngineChannel->pOutputLeft[Skip];
775            finalSynthesisParameters.pOutRight = &pEngineChannel->pOutputRight[Skip];
776            finalSynthesisParameters.pSrc      = pSrc;
777    
778            RTList<Event>::Iterator itCCEvent = pEngineChannel->pEvents->first();
779            RTList<Event>::Iterator itNoteEvent = pEngineChannel->pMIDIKeyInfo[MIDIKey].pEvents->first();
780    
781              ++itCCEvent;          if (Skip) { // skip events that happened before this voice was triggered
782                while (itCCEvent && itCCEvent->FragmentPos() <= Skip) ++itCCEvent;
783                while (itNoteEvent && itNoteEvent->FragmentPos() <= Skip) ++itNoteEvent;
784          }          }
785    
786            uint killPos;
787            if (itKillEvent) killPos = RTMath::Min(itKillEvent->FragmentPos(), pEngine->MaxFadeOutPos);
788    
789          // process pitch events          uint i = Skip;
790          {          while (i < Samples) {
791              RTList<Event>* pVCOEventList = pEngineChannel->pSynthesisEvents[Event::destination_vco];              int iSubFragmentEnd = RTMath::Min(i + CONFIG_DEFAULT_SUBFRAGMENT_SIZE, Samples);
792              RTList<Event>::Iterator itVCOEvent = pVCOEventList->first();  
793              if (Delay) { // skip events that happened before this voice was triggered              // initialize all final synthesis parameters
794                  while (itVCOEvent && itVCOEvent->FragmentPos() <= Delay) ++itVCOEvent;              finalSynthesisParameters.fFinalPitch = PitchBase * PitchBend;
795              }              fFinalCutoff    = VCFCutoffCtrl.fvalue;
796              // apply old pitchbend value until first pitch event occurs              fFinalResonance = VCFResonanceCtrl.fvalue;
797              if (this->PitchBend != 1.0) {  
798                  uint end = (itVCOEvent) ? itVCOEvent->FragmentPos() : Samples;              // process MIDI control change and pitchbend events for this subfragment
799                  for (uint i = Delay; i < end; i++) {              processCCEvents(itCCEvent, iSubFragmentEnd);
800                      pEngine->pSynthesisParameters[Event::destination_vco][i] *= this->PitchBend;  
801                  }              float fFinalVolume = VolumeSmoother.render() * CrossfadeSmoother.render();
802    #ifdef CONFIG_PROCESS_MUTED_CHANNELS
803                if (pEngineChannel->GetMute()) fFinalVolume = 0;
804    #endif
805    
806                // process transition events (note on, note off & sustain pedal)
807                processTransitionEvents(itNoteEvent, iSubFragmentEnd);
808    
809                // if the voice was killed in this subfragment switch EG1 to fade out stage
810                if (itKillEvent && killPos <= iSubFragmentEnd) {
811                    EG1.enterFadeOutStage();
812                    itKillEvent = Pool<Event>::Iterator();
813              }              }
             float pitch;  
             while (itVCOEvent) {  
                 RTList<Event>::Iterator itNextVCOEvent = itVCOEvent;  
                 ++itNextVCOEvent;  
   
                 // calculate the influence length of this event (in sample points)  
                 uint end = (itNextVCOEvent) ? itNextVCOEvent->FragmentPos() : Samples;  
   
                 pitch = RTMath::CentsToFreqRatio(((double) itVCOEvent->Param.Pitch.Pitch / 8192.0) * 200.0); // +-two semitones = +-200 cents  
   
                 // apply pitch value to the pitch parameter sequence  
                 for (uint i = itVCOEvent->FragmentPos(); i < end; i++) {  
                     pEngine->pSynthesisParameters[Event::destination_vco][i] *= pitch;  
                 }  
814    
815                  itVCOEvent = itNextVCOEvent;              // process envelope generators
816                switch (EG1.getSegmentType()) {
817                    case EGADSR::segment_lin:
818                        fFinalVolume *= EG1.processLin();
819                        break;
820                    case EGADSR::segment_exp:
821                        fFinalVolume *= EG1.processExp();
822                        break;
823                    case EGADSR::segment_end:
824                        fFinalVolume *= EG1.getLevel();
825                        break; // noop
826              }              }
827              if (!pVCOEventList->isEmpty()) {              switch (EG2.getSegmentType()) {
828                  this->PitchBend = pitch;                  case EGADSR::segment_lin:
829                  SYNTHESIS_MODE_SET_INTERPOLATE(SynthesisMode, true);                      fFinalCutoff *= EG2.processLin();
830                  SYNTHESIS_MODE_SET_CONSTPITCH(SynthesisMode, false);                      break;
831                    case EGADSR::segment_exp:
832                        fFinalCutoff *= EG2.processExp();
833                        break;
834                    case EGADSR::segment_end:
835                        fFinalCutoff *= EG2.getLevel();
836                        break; // noop
837              }              }
838          }              if (EG3.active()) finalSynthesisParameters.fFinalPitch *= EG3.render();
839    
840          // process volume / attenuation events (TODO: we only handle and _expect_ crossfade events here ATM !)              // process low frequency oscillators
841          {              if (bLFO1Enabled) fFinalVolume *= pLFO1->render();
842              RTList<Event>* pVCAEventList = pEngineChannel->pSynthesisEvents[Event::destination_vca];              if (bLFO2Enabled) fFinalCutoff *= pLFO2->render();
843              RTList<Event>::Iterator itVCAEvent = pVCAEventList->first();              if (bLFO3Enabled) finalSynthesisParameters.fFinalPitch *= RTMath::CentsToFreqRatio(pLFO3->render());
             if (Delay) { // skip events that happened before this voice was triggered  
                 while (itVCAEvent && itVCAEvent->FragmentPos() <= Delay) ++itVCAEvent;  
             }  
             float crossfadevolume;  
             while (itVCAEvent) {  
                 RTList<Event>::Iterator itNextVCAEvent = itVCAEvent;  
                 ++itNextVCAEvent;  
   
                 // calculate the influence length of this event (in sample points)  
                 uint end = (itNextVCAEvent) ? itNextVCAEvent->FragmentPos() : Samples;  
   
                 crossfadevolume = CrossfadeAttenuation(itVCAEvent->Param.CC.Value);  
   
                 float effective_volume = crossfadevolume * this->Volume * pEngineChannel->GlobalVolume;  
   
                 // apply volume value to the volume parameter sequence  
                 for (uint i = itVCAEvent->FragmentPos(); i < end; i++) {  
                     pEngine->pSynthesisParameters[Event::destination_vca][i] = effective_volume;  
                 }  
844    
845                  itVCAEvent = itNextVCAEvent;              // if filter enabled then update filter coefficients
846                if (SYNTHESIS_MODE_GET_FILTER(SynthesisMode)) {
847                    finalSynthesisParameters.filterLeft.SetParameters(fFinalCutoff + 1.0, fFinalResonance, pEngine->SampleRate);
848                    finalSynthesisParameters.filterRight.SetParameters(fFinalCutoff + 1.0, fFinalResonance, pEngine->SampleRate);
849              }              }
             if (!pVCAEventList->isEmpty()) this->CrossfadeVolume = crossfadevolume;  
         }  
850    
851          // process filter cutoff events              // do we need resampling?
852          {              const float __PLUS_ONE_CENT  = 1.000577789506554859250142541782224725466f;
853              RTList<Event>* pCutoffEventList = pEngineChannel->pSynthesisEvents[Event::destination_vcfc];              const float __MINUS_ONE_CENT = 0.9994225441413807496009516495583113737666f;
854              RTList<Event>::Iterator itCutoffEvent = pCutoffEventList->first();              const bool bResamplingRequired = !(finalSynthesisParameters.fFinalPitch <= __PLUS_ONE_CENT &&
855              if (Delay) { // skip events that happened before this voice was triggered                                                 finalSynthesisParameters.fFinalPitch >= __MINUS_ONE_CENT);
856                  while (itCutoffEvent && itCutoffEvent->FragmentPos() <= Delay) ++itCutoffEvent;              SYNTHESIS_MODE_SET_INTERPOLATE(SynthesisMode, bResamplingRequired);
             }  
             float cutoff;  
             while (itCutoffEvent) {  
                 RTList<Event>::Iterator itNextCutoffEvent = itCutoffEvent;  
                 ++itNextCutoffEvent;  
   
                 // calculate the influence length of this event (in sample points)  
                 uint end = (itNextCutoffEvent) ? itNextCutoffEvent->FragmentPos() : Samples;  
   
                 cutoff = exp((float) itCutoffEvent->Param.CC.Value * 0.00787402f * FILTER_CUTOFF_COEFF) * CONFIG_FILTER_CUTOFF_MAX - CONFIG_FILTER_CUTOFF_MIN;  
   
                 // apply cutoff frequency to the cutoff parameter sequence  
                 for (uint i = itCutoffEvent->FragmentPos(); i < end; i++) {  
                     pEngine->pSynthesisParameters[Event::destination_vcfc][i] = cutoff;  
                 }  
857    
858                  itCutoffEvent = itNextCutoffEvent;              // prepare final synthesis parameters structure
859              }              finalSynthesisParameters.uiToGo            = iSubFragmentEnd - i;
860              if (!pCutoffEventList->isEmpty()) VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of parameter matrix next time  #ifdef CONFIG_INTERPOLATE_VOLUME
861          }              finalSynthesisParameters.fFinalVolumeDeltaLeft  =
862                    (fFinalVolume * VolumeLeft  * PanLeftSmoother.render() -
863                     finalSynthesisParameters.fFinalVolumeLeft) / finalSynthesisParameters.uiToGo;
864                finalSynthesisParameters.fFinalVolumeDeltaRight =
865                    (fFinalVolume * VolumeRight * PanRightSmoother.render() -
866                     finalSynthesisParameters.fFinalVolumeRight) / finalSynthesisParameters.uiToGo;
867    #else
868                finalSynthesisParameters.fFinalVolumeLeft  =
869                    fFinalVolume * VolumeLeft  * PanLeftSmoother.render();
870                finalSynthesisParameters.fFinalVolumeRight =
871                    fFinalVolume * VolumeRight * PanRightSmoother.render();
872    #endif
873                // render audio for one subfragment
874                RunSynthesisFunction(SynthesisMode, &finalSynthesisParameters, &loop);
875    
876          // process filter resonance events              // stop the rendering if volume EG is finished
877          {              if (EG1.getSegmentType() == EGADSR::segment_end) break;
             RTList<Event>* pResonanceEventList = pEngineChannel->pSynthesisEvents[Event::destination_vcfr];  
             RTList<Event>::Iterator itResonanceEvent = pResonanceEventList->first();  
             if (Delay) { // skip events that happened before this voice was triggered  
                 while (itResonanceEvent && itResonanceEvent->FragmentPos() <= Delay) ++itResonanceEvent;  
             }  
             while (itResonanceEvent) {  
                 RTList<Event>::Iterator itNextResonanceEvent = itResonanceEvent;  
                 ++itNextResonanceEvent;  
   
                 // calculate the influence length of this event (in sample points)  
                 uint end = (itNextResonanceEvent) ? itNextResonanceEvent->FragmentPos() : Samples;  
   
                 // convert absolute controller value to differential  
                 int ctrldelta = itResonanceEvent->Param.CC.Value - VCFResonanceCtrl.value;  
                 VCFResonanceCtrl.value = itResonanceEvent->Param.CC.Value;  
   
                 float resonancedelta = (float) ctrldelta * 0.00787f; // 0.0..1.0  
   
                 // apply cutoff frequency to the cutoff parameter sequence  
                 for (uint i = itResonanceEvent->FragmentPos(); i < end; i++) {  
                     pEngine->pSynthesisParameters[Event::destination_vcfr][i] += resonancedelta;  
                 }  
878    
879                  itResonanceEvent = itNextResonanceEvent;              const double newPos = Pos + (iSubFragmentEnd - i) * finalSynthesisParameters.fFinalPitch;
             }  
             if (!pResonanceEventList->isEmpty()) VCFResonanceCtrl.fvalue = pResonanceEventList->last()->Param.CC.Value * 0.00787f; // needed for initialization of parameter matrix next time  
         }  
     }  
880    
881      /**              // increment envelopes' positions
882       * Calculate all necessary, final biquad filter parameters.              if (EG1.active()) {
883       *  
884       * @param Samples - number of samples to be rendered in this audio fragment cycle                  // 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
885       */                  if (pDimRgn->SampleLoops && Pos <= pDimRgn->pSampleLoops[0].LoopStart && pDimRgn->pSampleLoops[0].LoopStart < newPos) {
886      void Voice::CalculateBiquadParameters(uint Samples) {                      EG1.update(EGADSR::event_hold_end, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
         biquad_param_t bqbase;  
         biquad_param_t bqmain;  
         float prev_cutoff = pEngine->pSynthesisParameters[Event::destination_vcfc][0];  
         float prev_res    = pEngine->pSynthesisParameters[Event::destination_vcfr][0];  
         FilterLeft.SetParameters( &bqbase, &bqmain, prev_cutoff + CONFIG_FILTER_CUTOFF_MIN, prev_res, pEngine->SampleRate);  
         FilterRight.SetParameters(&bqbase, &bqmain, prev_cutoff + CONFIG_FILTER_CUTOFF_MIN, prev_res, pEngine->SampleRate);  
         pEngine->pBasicFilterParameters[0] = bqbase;  
         pEngine->pMainFilterParameters[0]  = bqmain;  
   
         float* bq;  
         for (int i = 1; i < Samples; i++) {  
             // recalculate biquad parameters if cutoff or resonance differ from previous sample point  
             if (!(i & FILTER_UPDATE_MASK)) {  
                 if (pEngine->pSynthesisParameters[Event::destination_vcfr][i] != prev_res ||  
                     pEngine->pSynthesisParameters[Event::destination_vcfc][i] != prev_cutoff)  
                 {  
                     prev_cutoff = pEngine->pSynthesisParameters[Event::destination_vcfc][i];  
                     prev_res    = pEngine->pSynthesisParameters[Event::destination_vcfr][i];  
                     FilterLeft.SetParameters( &bqbase, &bqmain, prev_cutoff + CONFIG_FILTER_CUTOFF_MIN, prev_res, pEngine->SampleRate);  
                     FilterRight.SetParameters(&bqbase, &bqmain, prev_cutoff + CONFIG_FILTER_CUTOFF_MIN, prev_res, pEngine->SampleRate);  
887                  }                  }
888    
889                    EG1.increment(1);
890                    if (!EG1.toStageEndLeft()) EG1.update(EGADSR::event_stage_end, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
891              }              }
892                if (EG2.active()) {
893                    EG2.increment(1);
894                    if (!EG2.toStageEndLeft()) EG2.update(EGADSR::event_stage_end, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
895                }
896                EG3.increment(1);
897                if (!EG3.toEndLeft()) EG3.update(); // neutralize envelope coefficient if end reached
898    
899              //same as 'pEngine->pBasicFilterParameters[i] = bqbase;'              Pos = newPos;
900              bq    = (float*) &pEngine->pBasicFilterParameters[i];              i = iSubFragmentEnd;
             bq[0] = bqbase.b0;  
             bq[1] = bqbase.b1;  
             bq[2] = bqbase.b2;  
             bq[3] = bqbase.a1;  
             bq[4] = bqbase.a2;  
   
             // same as 'pEngine->pMainFilterParameters[i] = bqmain;'  
             bq    = (float*) &pEngine->pMainFilterParameters[i];  
             bq[0] = bqmain.b0;  
             bq[1] = bqmain.b1;  
             bq[2] = bqmain.b2;  
             bq[3] = bqmain.a1;  
             bq[4] = bqmain.a2;  
901          }          }
902      }      }
903    
904      /**      /** @brief Update current portamento position.
      *  Synthesizes the current audio fragment for this voice.  
905       *       *
906       *  @param Samples - number of sample points to be rendered in this audio       * Will be called when portamento mode is enabled to get the final
907       *                   fragment cycle       * portamento position of this active voice from where the next voice(s)
908       *  @param pSrc    - pointer to input sample data       * might continue to slide on.
909       *  @param Skip    - number of sample points to skip in output buffer       *
910         * @param itNoteOffEvent - event which causes this voice to die soon
911       */       */
912      void Voice::Synthesize(uint Samples, sample_t* pSrc, uint Skip) {      void Voice::UpdatePortamentoPos(Pool<Event>::Iterator& itNoteOffEvent) {
913          RunSynthesisFunction(SynthesisMode, *this, Samples, pSrc, Skip);          const float fFinalEG3Level = EG3.level(itNoteOffEvent->FragmentPos());
914            pEngineChannel->PortamentoPos = (float) MIDIKey + RTMath::FreqRatioToCents(fFinalEG3Level) * 0.01f;
915      }      }
916    
917      /**      /**
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