/[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 738 by schoenebeck, Tue Aug 16 17:14:25 2005 UTC revision 769 by schoenebeck, Sat Sep 3 11:14:30 2005 UTC
# Line 693  namespace LinuxSampler { namespace gig { Line 693  namespace LinuxSampler { namespace gig {
693      void Voice::processPitchEvent(RTList<Event>::Iterator& itEvent) {      void Voice::processPitchEvent(RTList<Event>::Iterator& itEvent) {
694          const float pitch = RTMath::CentsToFreqRatio(((double) itEvent->Param.Pitch.Pitch / 8192.0) * 200.0); // +-two semitones = +-200 cents          const float pitch = RTMath::CentsToFreqRatio(((double) itEvent->Param.Pitch.Pitch / 8192.0) * 200.0); // +-two semitones = +-200 cents
695          fFinalPitch *= pitch;          fFinalPitch *= pitch;
696            PitchBend = pitch;
697      }      }
698    
699      void Voice::processCrossFadeEvent(RTList<Event>::Iterator& itEvent) {      void Voice::processCrossFadeEvent(RTList<Event>::Iterator& itEvent) {
# Line 739  namespace LinuxSampler { namespace gig { Line 740  namespace LinuxSampler { namespace gig {
740      void Voice::Synthesize(uint Samples, sample_t* pSrc, uint Skip) {      void Voice::Synthesize(uint Samples, sample_t* pSrc, uint Skip) {
741          RTList<Event>::Iterator itCCEvent = pEngineChannel->pEvents->first();          RTList<Event>::Iterator itCCEvent = pEngineChannel->pEvents->first();
742          RTList<Event>::Iterator itNoteEvent = pEngineChannel->pMIDIKeyInfo[MIDIKey].pEvents->first();          RTList<Event>::Iterator itNoteEvent = pEngineChannel->pMIDIKeyInfo[MIDIKey].pEvents->first();
743                    
744          if (Skip) { // skip events that happened before this voice was triggered          if (Skip) { // skip events that happened before this voice was triggered
745              while (itCCEvent && itCCEvent->FragmentPos() <= Skip) ++itCCEvent;              while (itCCEvent && itCCEvent->FragmentPos() <= Skip) ++itCCEvent;
746              while (itNoteEvent && itNoteEvent->FragmentPos() <= Skip) ++itNoteEvent;              while (itNoteEvent && itNoteEvent->FragmentPos() <= Skip) ++itNoteEvent;
747          }          }
748            
749          uint i = Skip;          uint i = Skip;
750          while (i < Samples) {          while (i < Samples) {
751              int iSubFragmentEnd = RTMath::Min(i + CONFIG_DEFAULT_SUBFRAGMENT_SIZE, Samples);              int iSubFragmentEnd = RTMath::Min(i + CONFIG_DEFAULT_SUBFRAGMENT_SIZE, Samples);
752                
753              // initialize all final synthesis parameters              // initialize all final synthesis parameters
754              fFinalPitch = PitchBase * PitchBend;              fFinalPitch = PitchBase * PitchBend;
755              #if CONFIG_PROCESS_MUTED_CHANNELS              #if CONFIG_PROCESS_MUTED_CHANNELS
756              fFinalVolume = this->Volume * this->CrossfadeVolume * (pEngineChannel->GetMute() ? 0 : pEngineChannel->GlobalVolume));              fFinalVolume = this->Volume * this->CrossfadeVolume * (pEngineChannel->GetMute() ? 0 : pEngineChannel->GlobalVolume);
757              #else              #else
758              fFinalVolume = this->Volume * this->CrossfadeVolume * pEngineChannel->GlobalVolume;              fFinalVolume = this->Volume * this->CrossfadeVolume * pEngineChannel->GlobalVolume;
759              #endif              #endif
760              fFinalCutoff    = VCFCutoffCtrl.fvalue;              fFinalCutoff    = VCFCutoffCtrl.fvalue;
761              fFinalResonance = VCFResonanceCtrl.fvalue;              fFinalResonance = VCFResonanceCtrl.fvalue;
762                
763              // process MIDI control change and pitchbend events for this subfragment              // process MIDI control change and pitchbend events for this subfragment
764              processCCEvents(itCCEvent, iSubFragmentEnd);              processCCEvents(itCCEvent, iSubFragmentEnd);
765    
766              // process transition events (note on, note off & sustain pedal)              // process transition events (note on, note off & sustain pedal)
767              processTransitionEvents(itNoteEvent, iSubFragmentEnd);              processTransitionEvents(itNoteEvent, iSubFragmentEnd);
768                
769              // process envelope generators              // process envelope generators
770              switch (EG1.getSegmentType()) {              switch (EG1.getSegmentType()) {
771                  case EGADSR::segment_lin:                  case EGADSR::segment_lin:
# Line 789  namespace LinuxSampler { namespace gig { Line 790  namespace LinuxSampler { namespace gig {
790                      break; // noop                      break; // noop
791              }              }
792              fFinalPitch *= RTMath::CentsToFreqRatio(EG3.render());              fFinalPitch *= RTMath::CentsToFreqRatio(EG3.render());
793                
794              // process low frequency oscillators              // process low frequency oscillators
795              if (bLFO1Enabled) fFinalVolume *= pLFO1->render();              if (bLFO1Enabled) fFinalVolume *= pLFO1->render();
796              if (bLFO2Enabled) fFinalCutoff *= pLFO2->render();              if (bLFO2Enabled) fFinalCutoff *= pLFO2->render();
# Line 803  namespace LinuxSampler { namespace gig { Line 804  namespace LinuxSampler { namespace gig {
804    
805              // how many steps do we calculate for this next subfragment              // how many steps do we calculate for this next subfragment
806              const int steps = iSubFragmentEnd - i;              const int steps = iSubFragmentEnd - i;
807                
808              // select the appropriate synthesis mode              // select the appropriate synthesis mode
809              SYNTHESIS_MODE_SET_INTERPOLATE(SynthesisMode, fFinalPitch != 1.0f);              SYNTHESIS_MODE_SET_INTERPOLATE(SynthesisMode, fFinalPitch != 1.0f);
810                
811              // render audio for one subfragment              // render audio for one subfragment
812              RunSynthesisFunction(SynthesisMode, *this, iSubFragmentEnd, pSrc, i);              RunSynthesisFunction(SynthesisMode, *this, iSubFragmentEnd, pSrc, i);
813    
814              // increment envelopes' positions                          // increment envelopes' positions
815              if (EG1.active()) {              if (EG1.active()) {
816                  EG1.increment(steps);                  EG1.increment(1);
817                  if (!EG1.toStageEndLeft()) EG1.update(EGADSR::event_stage_end, this->Pos, fFinalPitch, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);                  if (!EG1.toStageEndLeft()) EG1.update(EGADSR::event_stage_end, this->Pos, fFinalPitch, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
818              }              }
819              if (EG2.active()) {              if (EG2.active()) {
820                  EG2.increment(steps);                  EG2.increment(1);
821                  if (!EG2.toStageEndLeft()) EG2.update(EGADSR::event_stage_end, this->Pos, fFinalPitch, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);                  if (!EG2.toStageEndLeft()) EG2.update(EGADSR::event_stage_end, this->Pos, fFinalPitch, pEngine->SampleRate / CONFIG_DEFAULT_SUBFRAGMENT_SIZE);
822              }              }
823              EG3.increment(steps);              EG3.increment(1);
824              if (!EG3.toEndLeft()) EG3.update(); // neutralize envelope coefficient if end reached              if (!EG3.toEndLeft()) EG3.update(); // neutralize envelope coefficient if end reached
825    
826                i = iSubFragmentEnd;
827          }          }
828      }      }
829    
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