/[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 233 by schoenebeck, Tue Sep 7 09:32:21 2004 UTC revision 236 by schoenebeck, Thu Sep 9 18:44:18 2004 UTC
# Line 120  namespace LinuxSampler { namespace gig { Line 120  namespace LinuxSampler { namespace gig {
120          MIDIKey         = pNoteOnEvent->Key;          MIDIKey         = pNoteOnEvent->Key;
121          pRegion         = pInstrument->GetRegion(MIDIKey);          pRegion         = pInstrument->GetRegion(MIDIKey);
122          PlaybackState   = playback_state_ram; // we always start playback from RAM cache and switch then to disk if needed          PlaybackState   = playback_state_ram; // we always start playback from RAM cache and switch then to disk if needed
         Pos             = 0;  
123          Delay           = pNoteOnEvent->FragmentPos();          Delay           = pNoteOnEvent->FragmentPos();
124          pTriggerEvent   = pNoteOnEvent;          pTriggerEvent   = pNoteOnEvent;
125    
# Line 233  namespace LinuxSampler { namespace gig { Line 232  namespace LinuxSampler { namespace gig {
232                      std::cerr << "gig::Voice::Trigger() Error: Unknown dimension\n" << std::flush;                      std::cerr << "gig::Voice::Trigger() Error: Unknown dimension\n" << std::flush;
233              }              }
234          }          }
235          ::gig::DimensionRegion* pDimRgn = pRegion->GetDimensionRegionByValue(DimValues[4],DimValues[3],DimValues[2],DimValues[1],DimValues[0]);          pDimRgn = pRegion->GetDimensionRegionByValue(DimValues[4],DimValues[3],DimValues[2],DimValues[1],DimValues[0]);
236    
237            // get starting crossfade volume level
238            switch (pDimRgn->AttenuationController.type) {
239                case ::gig::attenuation_ctrl_t::type_channelaftertouch:
240                    CrossfadeVolume = 1.0f; //TODO: aftertouch not supported yet
241                    break;
242                case ::gig::attenuation_ctrl_t::type_velocity:
243                    CrossfadeVolume = CrossfadeAttenuation(pNoteOnEvent->Velocity);
244                    break;
245                case ::gig::attenuation_ctrl_t::type_controlchange: //FIXME: currently not sample accurate
246                    CrossfadeVolume = CrossfadeAttenuation(pEngine->ControllerTable[pDimRgn->AttenuationController.controller_number]);
247                    break;
248                case ::gig::attenuation_ctrl_t::type_none: // no crossfade defined
249                default:
250                    CrossfadeVolume = 1.0f;
251            }
252    
253          pSample = pDimRgn->pSample; // sample won't change until the voice is finished          pSample = pDimRgn->pSample; // sample won't change until the voice is finished
254    
255            Pos = pDimRgn->SampleStartOffset; // offset where we should start playback of sample (0 - 2000 sample points)
256    
257          // 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
258          long cachedsamples = pSample->GetCache().Size / pSample->FrameSize;          long cachedsamples = pSample->GetCache().Size / pSample->FrameSize;
259          DiskVoice          = cachedsamples < pSample->SamplesTotal;          DiskVoice          = cachedsamples < pSample->SamplesTotal;
# Line 605  namespace LinuxSampler { namespace gig { Line 622  namespace LinuxSampler { namespace gig {
622      void Voice::Render(uint Samples) {      void Voice::Render(uint Samples) {
623    
624          // Reset the synthesis parameter matrix          // Reset the synthesis parameter matrix
625          pEngine->ResetSynthesisParameters(Event::destination_vca, this->Volume * pEngine->GlobalVolume);          pEngine->ResetSynthesisParameters(Event::destination_vca, this->Volume * this->CrossfadeVolume * pEngine->GlobalVolume);
626          pEngine->ResetSynthesisParameters(Event::destination_vco, this->PitchBase);          pEngine->ResetSynthesisParameters(Event::destination_vco, this->PitchBase);
627      #if ENABLE_FILTER      #if ENABLE_FILTER
628          pEngine->ResetSynthesisParameters(Event::destination_vcfc, VCFCutoffCtrl.fvalue);          pEngine->ResetSynthesisParameters(Event::destination_vcfc, VCFCutoffCtrl.fvalue);
# Line 685  namespace LinuxSampler { namespace gig { Line 702  namespace LinuxSampler { namespace gig {
702          }          }
703    
704    
     #if ENABLE_FILTER  
705          // Reset synthesis event lists (except VCO, as VCO events apply channel wide currently)          // Reset synthesis event lists (except VCO, as VCO events apply channel wide currently)
706            pEngine->pSynthesisEvents[Event::destination_vca]->clear();
707        #if ENABLE_FILTER
708          pEngine->pSynthesisEvents[Event::destination_vcfc]->clear();          pEngine->pSynthesisEvents[Event::destination_vcfc]->clear();
709          pEngine->pSynthesisEvents[Event::destination_vcfr]->clear();          pEngine->pSynthesisEvents[Event::destination_vcfr]->clear();
710      #endif // ENABLE_FILTER      #endif // ENABLE_FILTER
# Line 750  namespace LinuxSampler { namespace gig { Line 768  namespace LinuxSampler { namespace gig {
768                  if (pCCEvent->Controller == pLFO3->ExtController) {                  if (pCCEvent->Controller == pLFO3->ExtController) {
769                      pLFO3->SendEvent(pCCEvent);                      pLFO3->SendEvent(pCCEvent);
770                  }                  }
771                    if (pDimRgn->AttenuationController.type == ::gig::attenuation_ctrl_t::type_controlchange &&
772                        pCCEvent->Controller == pDimRgn->AttenuationController.controller_number) { // if crossfade event
773                        pEngine->pSynthesisEvents[Event::destination_vca]->alloc_assign(*pCCEvent);
774                    }
775              }              }
776    
777              pCCEvent = pEngine->pCCEvents->next();              pCCEvent = pEngine->pCCEvents->next();
# Line 789  namespace LinuxSampler { namespace gig { Line 811  namespace LinuxSampler { namespace gig {
811              if (pVCOEventList->last()) this->PitchBend = pitch;              if (pVCOEventList->last()) this->PitchBend = pitch;
812          }          }
813    
814            // process volume / attenuation events (TODO: we only handle and _expect_ crossfade events here ATM !)
815            {
816                RTEList<Event>* pVCAEventList = pEngine->pSynthesisEvents[Event::destination_vca];
817                Event* pVCAEvent = pVCAEventList->first();
818                if (Delay) { // skip events that happened before this voice was triggered
819                    while (pVCAEvent && pVCAEvent->FragmentPos() <= Delay) pVCAEvent = pVCAEventList->next();
820                }
821                float crossfadevolume;
822                while (pVCAEvent) {
823                    Event* pNextVCAEvent = pVCAEventList->next();
824    
825                    // calculate the influence length of this event (in sample points)
826                    uint end = (pNextVCAEvent) ? pNextVCAEvent->FragmentPos() : Samples;
827    
828                    crossfadevolume = CrossfadeAttenuation(pVCAEvent->Value);
829    
830                    float effective_volume = crossfadevolume * this->Volume * pEngine->GlobalVolume;
831    
832                    // apply volume value to the volume parameter sequence
833                    for (uint i = pVCAEvent->FragmentPos(); i < end; i++) {
834                        pEngine->pSynthesisParameters[Event::destination_vca][i] = effective_volume;
835                    }
836    
837                    pVCAEvent = pNextVCAEvent;
838                }
839                if (pVCAEventList->last()) this->CrossfadeVolume = crossfadevolume;
840            }
841    
842      #if ENABLE_FILTER      #if ENABLE_FILTER
843          // process filter cutoff events          // process filter cutoff events
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