/[svn]/linuxsampler/trunk/src/engines/gig/Voice.cpp
ViewVC logotype

Diff of /linuxsampler/trunk/src/engines/gig/Voice.cpp

Parent Directory Parent Directory | Revision Log Revision Log | View Patch Patch

revision 781 by schoenebeck, Mon Sep 26 10:17:00 2005 UTC revision 829 by schoenebeck, Sat Jan 14 14:07:47 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 140  namespace LinuxSampler { namespace gig { Line 140  namespace LinuxSampler { namespace gig {
140          PanRight = 1.0f - float(RTMath::Min(pDimRgn->Pan, 0)) / -64.0f;          PanRight = 1.0f - float(RTMath::Min(pDimRgn->Pan, 0)) / -64.0f;
141    
142          finalSynthesisParameters.dPos = pDimRgn->SampleStartOffset; // offset where we should start playback of sample (0 - 2000 sample points)          finalSynthesisParameters.dPos = pDimRgn->SampleStartOffset; // offset where we should start playback of sample (0 - 2000 sample points)
143            Pos = pDimRgn->SampleStartOffset;
144    
145          // 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
146          long cachedsamples = pSample->GetCache().Size / pSample->FrameSize;          long cachedsamples = pSample->GetCache().Size / pSample->FrameSize;
# Line 149  namespace LinuxSampler { namespace gig { Line 150  namespace LinuxSampler { namespace gig {
150              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)
151    
152              // 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
153              if (pSample->Loops && pSample->LoopEnd <= MaxRAMPos) {              RAMLoop = (pSample->Loops && pSample->LoopEnd <= MaxRAMPos);
                 RAMLoop            = true;  
                 loop.uiTotalCycles = pSample->LoopPlayCount;  
                 loop.uiCyclesLeft  = pSample->LoopPlayCount;  
                 loop.uiStart       = pSample->LoopStart;  
                 loop.uiEnd         = pSample->LoopEnd;  
                 loop.uiSize        = pSample->LoopSize;  
             }  
             else RAMLoop = false;  
154    
155              if (pDiskThread->OrderNewStream(&DiskStreamRef, pSample, MaxRAMPos, !RAMLoop) < 0) {              if (pDiskThread->OrderNewStream(&DiskStreamRef, pSample, MaxRAMPos, !RAMLoop) < 0) {
156                  dmsg(1,("Disk stream order failed!\n"));                  dmsg(1,("Disk stream order failed!\n"));
# Line 168  namespace LinuxSampler { namespace gig { Line 161  namespace LinuxSampler { namespace gig {
161          }          }
162          else { // RAM only voice          else { // RAM only voice
163              MaxRAMPos = cachedsamples;              MaxRAMPos = cachedsamples;
164              if (pSample->Loops) {              RAMLoop = (pSample->Loops != 0);
                 RAMLoop           = true;  
                 loop.uiCyclesLeft = pSample->LoopPlayCount;  
             }  
             else RAMLoop = false;  
165              dmsg(4,("RAM only voice launched (Looping: %s)\n", (RAMLoop) ? "yes" : "no"));              dmsg(4,("RAM only voice launched (Looping: %s)\n", (RAMLoop) ? "yes" : "no"));
166          }          }
167            if (RAMLoop) {
168                loop.uiTotalCycles = pSample->LoopPlayCount;
169                loop.uiCyclesLeft  = pSample->LoopPlayCount;
170                loop.uiStart       = pSample->LoopStart;
171                loop.uiEnd         = pSample->LoopEnd;
172                loop.uiSize        = pSample->LoopSize;
173            }
174    
175          // calculate initial pitch value          // calculate initial pitch value
176          {          {
# Line 219  namespace LinuxSampler { namespace gig { Line 214  namespace LinuxSampler { namespace gig {
214              EG1.trigger(pDimRgn->EG1PreAttack,              EG1.trigger(pDimRgn->EG1PreAttack,
215                          pDimRgn->EG1Attack * eg1attack,                          pDimRgn->EG1Attack * eg1attack,
216                          pDimRgn->EG1Hold,                          pDimRgn->EG1Hold,
                         pSample->LoopStart,  
217                          pDimRgn->EG1Decay1 * eg1decay * velrelease,                          pDimRgn->EG1Decay1 * eg1decay * velrelease,
218                          pDimRgn->EG1Decay2 * eg1decay * velrelease,                          pDimRgn->EG1Decay2 * eg1decay * velrelease,
219                          pDimRgn->EG1InfiniteSustain,                          pDimRgn->EG1InfiniteSustain,
# Line 258  namespace LinuxSampler { namespace gig { Line 252  namespace LinuxSampler { namespace gig {
252              EG2.trigger(pDimRgn->EG2PreAttack,              EG2.trigger(pDimRgn->EG2PreAttack,
253                          pDimRgn->EG2Attack * eg2attack,                          pDimRgn->EG2Attack * eg2attack,
254                          false,                          false,
                         pSample->LoopStart,  
255                          pDimRgn->EG2Decay1 * eg2decay * velrelease,                          pDimRgn->EG2Decay1 * eg2decay * velrelease,
256                          pDimRgn->EG2Decay2 * eg2decay * velrelease,                          pDimRgn->EG2Decay2 * eg2decay * velrelease,
257                          pDimRgn->EG2InfiniteSustain,                          pDimRgn->EG2InfiniteSustain,
# Line 271  namespace LinuxSampler { namespace gig { Line 264  namespace LinuxSampler { namespace gig {
264    
265          // setup EG 3 (VCO EG)          // setup EG 3 (VCO EG)
266          {          {
267            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
268            EG3.trigger(eg3depth, pDimRgn->EG3Attack, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);              bool  bPortamento = pEngineChannel->PortamentoMode && pEngineChannel->PortamentoPos >= 0.0f;
269                float eg3depth = (bPortamento)
270                                     ? RTMath::CentsToFreqRatio((pEngineChannel->PortamentoPos - (float) MIDIKey) * 100)
271                                     : RTMath::CentsToFreqRatio(pDimRgn->EG3Depth);
272                float eg3time = (bPortamento)
273                                    ? pEngineChannel->PortamentoTime
274                                    : pDimRgn->EG3Attack;
275                EG3.trigger(eg3depth, eg3time, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
276                dmsg(5,("PortamentoPos=%f, depth=%f, time=%f\n", pEngineChannel->PortamentoPos, eg3depth, eg3time));
277          }          }
278    
279    
# Line 495  namespace LinuxSampler { namespace gig { Line 496  namespace LinuxSampler { namespace gig {
496              if (VCFCutoffCtrl.controller) {              if (VCFCutoffCtrl.controller) {
497                  cvalue = pEngineChannel->ControllerTable[VCFCutoffCtrl.controller];                  cvalue = pEngineChannel->ControllerTable[VCFCutoffCtrl.controller];
498                  if (pDimRgn->VCFCutoffControllerInvert) cvalue = 127 - cvalue;                  if (pDimRgn->VCFCutoffControllerInvert) cvalue = 127 - cvalue;
499                    // VCFVelocityScale in this case means Minimum cutoff
500                  if (cvalue < pDimRgn->VCFVelocityScale) cvalue = pDimRgn->VCFVelocityScale;                  if (cvalue < pDimRgn->VCFVelocityScale) cvalue = pDimRgn->VCFVelocityScale;
501              }              }
502              else {              else {
# Line 502  namespace LinuxSampler { namespace gig { Line 504  namespace LinuxSampler { namespace gig {
504              }              }
505              cutoff *= float(cvalue) * 0.00787402f; // (1 / 127)              cutoff *= float(cvalue) * 0.00787402f; // (1 / 127)
506              if (cutoff > 1.0) cutoff = 1.0;              if (cutoff > 1.0) cutoff = 1.0;
507              cutoff = exp(cutoff * FILTER_CUTOFF_COEFF) * CONFIG_FILTER_CUTOFF_MIN;              cutoff = (cutoff < 0.5 ? cutoff * 4826 - 1 : cutoff * 5715 - 449);
508                if (cutoff < 1.0) cutoff = 1.0;
509    
510              // calculate resonance              // calculate resonance
511              float resonance = (float) VCFResonanceCtrl.value * 0.00787f;   // 0.0..1.0              float resonance = (float) (VCFResonanceCtrl.controller ? VCFResonanceCtrl.value : pDimRgn->VCFResonance) * 0.00787f; // 0.0..1.0
             if (pDimRgn->VCFKeyboardTracking) {  
                 resonance += (float) (itNoteOnEvent->Param.Note.Key - pDimRgn->VCFKeyboardTrackingBreakpoint) * 0.00787f;  
             }  
             Constrain(resonance, 0.0, 1.0); // correct resonance if outside allowed value range (0.0..1.0)  
512    
513              VCFCutoffCtrl.fvalue    = cutoff - CONFIG_FILTER_CUTOFF_MIN;              VCFCutoffCtrl.fvalue    = cutoff - 1.0;
514              VCFResonanceCtrl.fvalue = resonance;              VCFResonanceCtrl.fvalue = resonance;
515          }          }
516          else {          else {
# Line 646  namespace LinuxSampler { namespace gig { Line 645  namespace LinuxSampler { namespace gig {
645      void Voice::processTransitionEvents(RTList<Event>::Iterator& itEvent, uint End) {      void Voice::processTransitionEvents(RTList<Event>::Iterator& itEvent, uint End) {
646          for (; itEvent && itEvent->FragmentPos() <= End; ++itEvent) {          for (; itEvent && itEvent->FragmentPos() <= End; ++itEvent) {
647              if (itEvent->Type == Event::type_release) {              if (itEvent->Type == Event::type_release) {
648                  EG1.update(EGADSR::event_release, finalSynthesisParameters.dPos, finalSynthesisParameters.fFinalPitch, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);                  EG1.update(EGADSR::event_release, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
649                  EG2.update(EGADSR::event_release, finalSynthesisParameters.dPos, finalSynthesisParameters.fFinalPitch, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);                  EG2.update(EGADSR::event_release, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
650              } else if (itEvent->Type == Event::type_cancel_release) {              } else if (itEvent->Type == Event::type_cancel_release) {
651                  EG1.update(EGADSR::event_cancel_release, finalSynthesisParameters.dPos, finalSynthesisParameters.fFinalPitch, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);                  EG1.update(EGADSR::event_cancel_release, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
652                  EG2.update(EGADSR::event_cancel_release, finalSynthesisParameters.dPos, finalSynthesisParameters.fFinalPitch, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);                  EG2.update(EGADSR::event_cancel_release, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
653              }              }
654          }          }
655      }      }
# Line 715  namespace LinuxSampler { namespace gig { Line 714  namespace LinuxSampler { namespace gig {
714          if (ccvalue < pDimRgn->VCFVelocityScale) ccvalue = pDimRgn->VCFVelocityScale;          if (ccvalue < pDimRgn->VCFVelocityScale) ccvalue = pDimRgn->VCFVelocityScale;
715          float cutoff = CutoffBase * float(ccvalue) * 0.00787402f; // (1 / 127)          float cutoff = CutoffBase * float(ccvalue) * 0.00787402f; // (1 / 127)
716          if (cutoff > 1.0) cutoff = 1.0;          if (cutoff > 1.0) cutoff = 1.0;
717          cutoff = exp(cutoff * FILTER_CUTOFF_COEFF) * CONFIG_FILTER_CUTOFF_MIN - CONFIG_FILTER_CUTOFF_MIN;          cutoff = (cutoff < 0.5 ? cutoff * 4826 - 1 : cutoff * 5715 - 449);
718          VCFCutoffCtrl.fvalue = cutoff; // needed for initialization of fFinalCutoff next time          if (cutoff < 1.0) cutoff = 1.0;
719    
720            VCFCutoffCtrl.fvalue = cutoff - 1.0; // needed for initialization of fFinalCutoff next time
721          fFinalCutoff = cutoff;          fFinalCutoff = cutoff;
722      }      }
723    
# Line 751  namespace LinuxSampler { namespace gig { Line 752  namespace LinuxSampler { namespace gig {
752              while (itNoteEvent && itNoteEvent->FragmentPos() <= Skip) ++itNoteEvent;              while (itNoteEvent && itNoteEvent->FragmentPos() <= Skip) ++itNoteEvent;
753          }          }
754    
755            uint killPos;
756            if (itKillEvent) killPos = RTMath::Min(itKillEvent->FragmentPos(), pEngine->MaxFadeOutPos);
757    
758          uint i = Skip;          uint i = Skip;
759          while (i < Samples) {          while (i < Samples) {
760              int iSubFragmentEnd = RTMath::Min(i + CONFIG_DEFAULT_SUBFRAGMENT_SIZE, Samples);              int iSubFragmentEnd = RTMath::Min(i + CONFIG_DEFAULT_SUBFRAGMENT_SIZE, Samples);
# Line 771  namespace LinuxSampler { namespace gig { Line 775  namespace LinuxSampler { namespace gig {
775              // process transition events (note on, note off & sustain pedal)              // process transition events (note on, note off & sustain pedal)
776              processTransitionEvents(itNoteEvent, iSubFragmentEnd);              processTransitionEvents(itNoteEvent, iSubFragmentEnd);
777    
778                // if the voice was killed in this subfragment switch EG1 to fade out stage
779                if (itKillEvent && killPos <= iSubFragmentEnd) {
780                    EG1.enterFadeOutStage();
781                    itKillEvent = Pool<Event>::Iterator();
782                }
783    
784              // process envelope generators              // process envelope generators
785              switch (EG1.getSegmentType()) {              switch (EG1.getSegmentType()) {
786                  case EGADSR::segment_lin:                  case EGADSR::segment_lin:
# Line 794  namespace LinuxSampler { namespace gig { Line 804  namespace LinuxSampler { namespace gig {
804                      fFinalCutoff *= EG2.getLevel();                      fFinalCutoff *= EG2.getLevel();
805                      break; // noop                      break; // noop
806              }              }
807              if (EG3.active()) finalSynthesisParameters.fFinalPitch *= RTMath::CentsToFreqRatio(EG3.render());              if (EG3.active()) finalSynthesisParameters.fFinalPitch *= EG3.render();
808    
809              // process low frequency oscillators              // process low frequency oscillators
810              if (bLFO1Enabled) fFinalVolume *= pLFO1->render();              if (bLFO1Enabled) fFinalVolume *= pLFO1->render();
# Line 803  namespace LinuxSampler { namespace gig { Line 813  namespace LinuxSampler { namespace gig {
813    
814              // if filter enabled then update filter coefficients              // if filter enabled then update filter coefficients
815              if (SYNTHESIS_MODE_GET_FILTER(SynthesisMode)) {              if (SYNTHESIS_MODE_GET_FILTER(SynthesisMode)) {
816                  finalSynthesisParameters.filterLeft.SetParameters(fFinalCutoff, fFinalResonance, pEngine->SampleRate);                  finalSynthesisParameters.filterLeft.SetParameters(fFinalCutoff + 1.0, fFinalResonance, pEngine->SampleRate);
817                  finalSynthesisParameters.filterRight.SetParameters(fFinalCutoff, fFinalResonance, pEngine->SampleRate);                  finalSynthesisParameters.filterRight.SetParameters(fFinalCutoff + 1.0, fFinalResonance, pEngine->SampleRate);
818              }              }
819    
820              // do we need resampling?              // do we need resampling?
# Line 822  namespace LinuxSampler { namespace gig { Line 832  namespace LinuxSampler { namespace gig {
832              // render audio for one subfragment              // render audio for one subfragment
833              RunSynthesisFunction(SynthesisMode, &finalSynthesisParameters, &loop);              RunSynthesisFunction(SynthesisMode, &finalSynthesisParameters, &loop);
834    
835                const double newPos = Pos + (iSubFragmentEnd - i) * finalSynthesisParameters.fFinalPitch;
836    
837              // increment envelopes' positions              // increment envelopes' positions
838              if (EG1.active()) {              if (EG1.active()) {
839    
840                    // 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
841                    if (pSample->Loops && Pos <= pSample->LoopStart && pSample->LoopStart < newPos) {
842                        EG1.update(EGADSR::event_hold_end, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
843                    }
844    
845                  EG1.increment(1);                  EG1.increment(1);
846                  if (!EG1.toStageEndLeft()) EG1.update(EGADSR::event_stage_end, finalSynthesisParameters.dPos, finalSynthesisParameters.fFinalPitch, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);                  if (!EG1.toStageEndLeft()) EG1.update(EGADSR::event_stage_end, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
847              }              }
848              if (EG2.active()) {              if (EG2.active()) {
849                  EG2.increment(1);                  EG2.increment(1);
850                  if (!EG2.toStageEndLeft()) EG2.update(EGADSR::event_stage_end, finalSynthesisParameters.dPos, finalSynthesisParameters.fFinalPitch, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);                  if (!EG2.toStageEndLeft()) EG2.update(EGADSR::event_stage_end, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
851              }              }
852              EG3.increment(1);              EG3.increment(1);
853              if (!EG3.toEndLeft()) EG3.update(); // neutralize envelope coefficient if end reached              if (!EG3.toEndLeft()) EG3.update(); // neutralize envelope coefficient if end reached
854    
855                Pos = newPos;
856              i = iSubFragmentEnd;              i = iSubFragmentEnd;
857          }          }
858      }      }
859    
860        /** @brief Update current portamento position.
861         *
862         * Will be called when portamento mode is enabled to get the final
863         * portamento position of this active voice from where the next voice(s)
864         * might continue to slide on.
865         *
866         * @param itNoteOffEvent - event which causes this voice to die soon
867         */
868        void Voice::UpdatePortamentoPos(Pool<Event>::Iterator& itNoteOffEvent) {
869            const float fFinalEG3Level = EG3.level(itNoteOffEvent->FragmentPos());
870            pEngineChannel->PortamentoPos = (float) MIDIKey + RTMath::FreqRatioToCents(fFinalEG3Level) * 0.01f;
871        }
872    
873      /**      /**
874       *  Immediately kill the voice. This method should not be used to kill       *  Immediately kill the voice. This method should not be used to kill
875       *  a normal, active voice, because it doesn't take care of things like       *  a normal, active voice, because it doesn't take care of things like
Legend:
Removed from v.781  
changed lines
  Added in v.829
  ViewVC Help
Powered by ViewVC