/[svn]/linuxsampler/trunk/src/engines/gig/Engine.cpp
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Diff of /linuxsampler/trunk/src/engines/gig/Engine.cpp

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revision 271 by schoenebeck, Fri Oct 8 20:51:39 2004 UTC revision 293 by schoenebeck, Mon Oct 25 15:14:27 2004 UTC
# Line 23  Line 23 
23  #include <sstream>  #include <sstream>
24  #include "DiskThread.h"  #include "DiskThread.h"
25  #include "Voice.h"  #include "Voice.h"
26    #include "EGADSR.h"
27    
28  #include "Engine.h"  #include "Engine.h"
29    
# Line 313  namespace LinuxSampler { namespace gig { Line 314  namespace LinuxSampler { namespace gig {
314          this->MaxSamplesPerCycle      = pAudioOutputDevice->MaxSamplesPerCycle();          this->MaxSamplesPerCycle      = pAudioOutputDevice->MaxSamplesPerCycle();
315          this->SampleRate              = pAudioOutputDevice->SampleRate();          this->SampleRate              = pAudioOutputDevice->SampleRate();
316    
317            // FIXME: audio drivers with varying fragment sizes might be a problem here
318            MaxFadeOutPos = MaxSamplesPerCycle - int(double(SampleRate) * EG_MIN_RELEASE_TIME) - 1;
319            if (MaxFadeOutPos < 0)
320                throw LinuxSamplerException("EG_MIN_RELEASE_TIME in EGADSR.h to big for current audio fragment size / sampling rate!");
321    
322          // (re)create disk thread          // (re)create disk thread
323          if (this->pDiskThread) {          if (this->pDiskThread) {
324              this->pDiskThread->StopThread();              this->pDiskThread->StopThread();
# Line 392  namespace LinuxSampler { namespace gig { Line 398  namespace LinuxSampler { namespace gig {
398          }          }
399    
400    
401            // update time of start and end of this audio fragment (as events' time stamps relate to this)
402            pEventGenerator->UpdateFragmentTime(Samples);
403    
404    
405          // empty the event lists for the new fragment          // empty the event lists for the new fragment
406          pEvents->clear();          pEvents->clear();
407          pCCEvents->clear();          pCCEvents->clear();
# Line 406  namespace LinuxSampler { namespace gig { Line 416  namespace LinuxSampler { namespace gig {
416              }              }
417          }          }
418    
         // read and copy events from input queue  
         Event event = pEventGenerator->CreateEvent();  
         while (true) {  
             if (!pEventQueue->pop(&event) || pEvents->poolIsEmpty()) break;  
             *pEvents->allocAppend() = event;  
         }  
   
419    
420          // update time of start and end of this audio fragment (as events' time stamps relate to this)          // get all events from the input event queue which belong to the current fragment
421          pEventGenerator->UpdateFragmentTime(Samples);          {
422                RingBuffer<Event>::NonVolatileReader eventQueueReader = pEventQueue->get_non_volatile_reader();
423                Event* pEvent;
424                while (true) {
425                    // get next event from input event queue
426                    if (!(pEvent = eventQueueReader.pop())) break;
427                    // if younger event reached, ignore that and all subsequent ones for now
428                    if (pEvent->FragmentPos() >= Samples) {
429                        eventQueueReader--;
430                        dmsg(2,("Younger Event, pos=%d ,Samples=%d!\n",pEvent->FragmentPos(),Samples));
431                        pEvent->ResetFragmentPos();
432                        break;
433                    }
434                    // copy event to internal event list
435                    if (pEvents->poolIsEmpty()) {
436                        dmsg(1,("Event pool emtpy!\n"));
437                        break;
438                    }
439                    *pEvents->allocAppend() = *pEvent;
440                }
441                eventQueueReader.free(); // free all copied events from input queue
442            }
443    
444    
445          // process events          // process events
# Line 466  namespace LinuxSampler { namespace gig { Line 490  namespace LinuxSampler { namespace gig {
490                      itVoice->Render(Samples);                      itVoice->Render(Samples);
491                      if (itVoice->IsActive()) active_voices++; // still active                      if (itVoice->IsActive()) active_voices++; // still active
492                      else { // voice reached end, is now inactive                      else { // voice reached end, is now inactive
493                          KillVoiceImmediately(itVoice); // remove voice from the list of active voices                          FreeVoice(itVoice); // remove voice from the list of active voices
494                      }                      }
495                  }                  }
496              }              }
# Line 480  namespace LinuxSampler { namespace gig { Line 504  namespace LinuxSampler { namespace gig {
504              for (; itVoiceStealEvent != end; ++itVoiceStealEvent) {              for (; itVoiceStealEvent != end; ++itVoiceStealEvent) {
505                  Pool<Voice>::Iterator itNewVoice = LaunchVoice(itVoiceStealEvent, itVoiceStealEvent->Param.Note.Layer, itVoiceStealEvent->Param.Note.ReleaseTrigger, false);                  Pool<Voice>::Iterator itNewVoice = LaunchVoice(itVoiceStealEvent, itVoiceStealEvent->Param.Note.Layer, itVoiceStealEvent->Param.Note.ReleaseTrigger, false);
506                  if (itNewVoice) {                  if (itNewVoice) {
507                      itNewVoice->Render(Samples);                      for (; itNewVoice; itNewVoice = itNewVoice->itChildVoice) {
508                      if (itNewVoice->IsActive()) active_voices++; // still active                          itNewVoice->Render(Samples);
509                      else { // voice reached end, is now inactive                          if (itNewVoice->IsActive()) active_voices++; // still active
510                          KillVoiceImmediately(itNewVoice); // remove voice from the list of active voices                          else { // voice reached end, is now inactive
511                                FreeVoice(itNewVoice); // remove voice from the list of active voices
512                            }
513                      }                      }
514                  }                  }
515                  else dmsg(1,("Ouch, voice stealing didn't work out!\n"));                  else dmsg(1,("gig::Engine: ERROR, voice stealing didn't work out!\n"));
516              }              }
517          }          }
518          // reset voice stealing for the new fragment          // reset voice stealing for the new fragment
# Line 495  namespace LinuxSampler { namespace gig { Line 521  namespace LinuxSampler { namespace gig {
521          iuiLastStolenKey  = RTList<uint>::Iterator();          iuiLastStolenKey  = RTList<uint>::Iterator();
522    
523    
524            // free all keys which have no active voices left
525            {
526                RTList<uint>::Iterator iuiKey = pActiveKeys->first();
527                RTList<uint>::Iterator end    = pActiveKeys->end();
528                while (iuiKey != end) { // iterate through all active keys
529                    midi_key_info_t* pKey = &pMIDIKeyInfo[*iuiKey];
530                    ++iuiKey;
531                    if (pKey->pActiveVoices->isEmpty()) FreeKey(pKey);
532                    #if DEVMODE
533                    else { // FIXME: should be removed before the final release (purpose: just a sanity check for debugging)
534                        RTList<Voice>::Iterator itVoice     = pKey->pActiveVoices->first();
535                        RTList<Voice>::Iterator itVoicesEnd = pKey->pActiveVoices->end();
536                        for (; itVoice != itVoicesEnd; ++itVoice) { // iterate through all voices on this key
537                            if (itVoice->itKillEvent) {
538                                dmsg(1,("gig::Engine: ERROR, killed voice survived !!!\n"));
539                            }
540                        }
541                    }
542                    #endif // DEVMODE
543                }
544            }
545    
546    
547          // write that to the disk thread class so that it can print it          // write that to the disk thread class so that it can print it
548          // on the console for debugging purposes          // on the console for debugging purposes
549          ActiveVoiceCount = active_voices;          ActiveVoiceCount = active_voices;
# Line 621  namespace LinuxSampler { namespace gig { Line 670  namespace LinuxSampler { namespace gig {
670          RTList<Event>::Iterator itNoteOnEventOnKeyList = itNoteOnEvent.moveToEndOf(pKey->pEvents);          RTList<Event>::Iterator itNoteOnEventOnKeyList = itNoteOnEvent.moveToEndOf(pKey->pEvents);
671    
672          // allocate and trigger a new voice for the key          // allocate and trigger a new voice for the key
673          LaunchVoice(itNoteOnEventOnKeyList);          LaunchVoice(itNoteOnEventOnKeyList, 0, false, true);
674      }      }
675    
676      /**      /**
# Line 647  namespace LinuxSampler { namespace gig { Line 696  namespace LinuxSampler { namespace gig {
696    
697          // spawn release triggered voice(s) if needed          // spawn release triggered voice(s) if needed
698          if (pKey->ReleaseTrigger) {          if (pKey->ReleaseTrigger) {
699              LaunchVoice(itNoteOffEventOnKeyList, 0, true);              LaunchVoice(itNoteOffEventOnKeyList, 0, true, false); //FIXME: for the moment we don't perform voice stealing for release triggered samples
700              pKey->ReleaseTrigger = false;              pKey->ReleaseTrigger = false;
701          }          }
702      }      }
# Line 686  namespace LinuxSampler { namespace gig { Line 735  namespace LinuxSampler { namespace gig {
735          Pool<Voice>::Iterator itNewVoice = pKey->pActiveVoices->allocAppend();          Pool<Voice>::Iterator itNewVoice = pKey->pActiveVoices->allocAppend();
736          if (itNewVoice) {          if (itNewVoice) {
737              // launch the new voice              // launch the new voice
738              if (itNewVoice->Trigger(itNoteOnEvent, this->Pitch, this->pInstrument, iLayer, ReleaseTriggerVoice) < 0) {              if (itNewVoice->Trigger(itNoteOnEvent, this->Pitch, this->pInstrument, iLayer, ReleaseTriggerVoice, VoiceStealing) < 0) {
739                  dmsg(1,("Triggering new voice failed!\n"));                  dmsg(1,("Triggering new voice failed!\n"));
740                  pKey->pActiveVoices->free(itNewVoice);                  pKey->pActiveVoices->free(itNewVoice);
741              }              }
# Line 716  namespace LinuxSampler { namespace gig { Line 765  namespace LinuxSampler { namespace gig {
765                  return itNewVoice; // success                  return itNewVoice; // success
766              }              }
767          }          }
768          else if (VoiceStealing) StealVoice(itNoteOnEvent, iLayer, ReleaseTriggerVoice); // no free voice left, so steal one          else if (VoiceStealing) {
769                // first, get total amount of required voices (dependant on amount of layers)
770                ::gig::Region* pRegion = pInstrument->GetRegion(itNoteOnEvent->Param.Note.Key);
771                if (!pRegion) return Pool<Voice>::Iterator(); // nothing defined for this MIDI key, so no voice needed
772                int voicesRequired = pRegion->Layers;
773    
774                // now steal the (remaining) amount of voices
775                for (int i = iLayer; i < voicesRequired; i++)
776                    StealVoice(itNoteOnEvent);
777    
778                // put note-on event into voice-stealing queue, so it will be reprocessed after killed voice died
779                RTList<Event>::Iterator itStealEvent = pVoiceStealingQueue->allocAppend();
780                if (itStealEvent) {
781                    *itStealEvent = *itNoteOnEvent; // copy event
782                    itStealEvent->Param.Note.Layer = iLayer;
783                    itStealEvent->Param.Note.ReleaseTrigger = ReleaseTriggerVoice;
784                }
785                else dmsg(1,("Voice stealing queue full!\n"));
786            }
787    
788          return Pool<Voice>::Iterator(); // no free voice or error          return Pool<Voice>::Iterator(); // no free voice or error
789      }      }
# Line 727  namespace LinuxSampler { namespace gig { Line 794  namespace LinuxSampler { namespace gig {
794       *  voice stealing and postpone the note-on event until the selected       *  voice stealing and postpone the note-on event until the selected
795       *  voice actually died.       *  voice actually died.
796       *       *
797       *  @param itNoteOnEvent       - key, velocity and time stamp of the event       *  @param itNoteOnEvent - key, velocity and time stamp of the event
      *  @param iLayer              - layer index for the new voice  
      *  @param ReleaseTriggerVoice - if new voice is a release triggered voice  
798       */       */
799      void Engine::StealVoice(Pool<Event>::Iterator& itNoteOnEvent, int iLayer, bool ReleaseTriggerVoice) {      void Engine::StealVoice(Pool<Event>::Iterator& itNoteOnEvent) {
800          if (!pEventPool->poolIsEmpty()) {          if (!pEventPool->poolIsEmpty()) {
801    
802              RTList<uint>::Iterator  iuiOldestKey;              RTList<uint>::Iterator  iuiOldestKey;
# Line 773  namespace LinuxSampler { namespace gig { Line 838  namespace LinuxSampler { namespace gig {
838                                  midi_key_info_t* pOldestKey = &pMIDIKeyInfo[*iuiOldestKey];                                  midi_key_info_t* pOldestKey = &pMIDIKeyInfo[*iuiOldestKey];
839                                  itOldestVoice = pOldestKey->pActiveVoices->first();                                  itOldestVoice = pOldestKey->pActiveVoices->first();
840                              }                              }
841                              else { // too less voices, even for voice stealing                              else {
842                                  dmsg(1,("Voice overflow! - You might recompile with higher MAX_AUDIO_VOICES!\n"));                                  dmsg(1,("gig::Engine: Warning, too less voices, even for voice stealing! - Better recompile with higher MAX_AUDIO_VOICES.\n"));
843                                  return;                                  return;
844                              }                              }
845                          }                          }
# Line 796  namespace LinuxSampler { namespace gig { Line 861  namespace LinuxSampler { namespace gig {
861                  }                  }
862              }              }
863    
864                //FIXME: can be removed, just a sanity check for debugging
865                if (!itOldestVoice->IsActive()) dmsg(1,("gig::Engine: ERROR, tried to steal a voice which was not active !!!\n"));
866    
867              // now kill the selected voice              // now kill the selected voice
868              itOldestVoice->Kill(itNoteOnEvent);              itOldestVoice->Kill(itNoteOnEvent);
869              // remember which voice on which key we stole, so we can simply proceed for the next voice stealing              // remember which voice on which key we stole, so we can simply proceed for the next voice stealing
870              this->itLastStolenVoice = itOldestVoice;              this->itLastStolenVoice = itOldestVoice;
871              this->iuiLastStolenKey = iuiOldestKey;              this->iuiLastStolenKey = iuiOldestKey;
             // put note-on event into voice-stealing queue, so it will be reprocessed after killed voice died  
             RTList<Event>::Iterator itStealEvent = pVoiceStealingQueue->allocAppend();  
             if (itStealEvent) {  
                 *itStealEvent = *itNoteOnEvent; // copy event  
                 itStealEvent->Param.Note.Layer = iLayer;  
                 itStealEvent->Param.Note.ReleaseTrigger = ReleaseTriggerVoice;  
             }  
             else dmsg(1,("Voice stealing queue full!\n"));  
872          }          }
873          else dmsg(1,("Event pool emtpy!\n"));          else dmsg(1,("Event pool emtpy!\n"));
874      }      }
875    
876      /**      /**
877       *  Immediately kills the voice given with pVoice (no matter if sustain is       *  Removes the given voice from the MIDI key's list of active voices.
878       *  pressed or not) and removes it from the MIDI key's list of active voice.       *  This method will be called when a voice went inactive, e.g. because
879       *  This method will e.g. be called if a voice went inactive by itself.       *  it finished to playback its sample, finished its release stage or
880         *  just was killed.
881       *       *
882       *  @param itVoice - points to the voice to be killed       *  @param itVoice - points to the voice to be freed
883       */       */
884      void Engine::KillVoiceImmediately(Pool<Voice>::Iterator& itVoice) {      void Engine::FreeVoice(Pool<Voice>::Iterator& itVoice) {
885          if (itVoice) {          if (itVoice) {
             if (itVoice->IsActive()) itVoice->KillImmediately();  
   
886              midi_key_info_t* pKey = &pMIDIKeyInfo[itVoice->MIDIKey];              midi_key_info_t* pKey = &pMIDIKeyInfo[itVoice->MIDIKey];
887    
888              uint keygroup = itVoice->KeyGroup;              uint keygroup = itVoice->KeyGroup;
# Line 831  namespace LinuxSampler { namespace gig { Line 890  namespace LinuxSampler { namespace gig {
890              // free the voice object              // free the voice object
891              pVoicePool->free(itVoice);              pVoicePool->free(itVoice);
892    
893              // check if there are no voices left on the MIDI key and update the key info if so              // if no other voices left and member of a key group, remove from key group
894              if (pKey->pActiveVoices->isEmpty()) {              if (pKey->pActiveVoices->isEmpty() && keygroup) {
895                  if (keygroup) { // if voice / key belongs to a key group                  uint** ppKeyGroup = &ActiveKeyGroups[keygroup];
896                      uint** ppKeyGroup = &ActiveKeyGroups[keygroup];                  if (*ppKeyGroup == &*pKey->itSelf) *ppKeyGroup = NULL; // remove key from key group
                     if (*ppKeyGroup == &*pKey->itSelf) *ppKeyGroup = NULL; // remove key from key group  
                 }  
                 pKey->Active = false;  
                 pActiveKeys->free(pKey->itSelf); // remove key from list of active keys  
                 pKey->itSelf = RTList<uint>::Iterator();  
                 pKey->ReleaseTrigger = false;  
                 pKey->pEvents->clear();  
                 dmsg(3,("Key has no more voices now\n"));  
897              }              }
898          }          }
899          else std::cerr << "Couldn't release voice! (pVoice == NULL)\n" << std::flush;          else std::cerr << "Couldn't release voice! (!itVoice)\n" << std::flush;
900        }
901    
902        /**
903         *  Called when there's no more voice left on a key, this call will
904         *  update the key info respectively.
905         *
906         *  @param pKey - key which is now inactive
907         */
908        void Engine::FreeKey(midi_key_info_t* pKey) {
909            if (pKey->pActiveVoices->isEmpty()) {
910                pKey->Active = false;
911                pActiveKeys->free(pKey->itSelf); // remove key from list of active keys
912                pKey->itSelf = RTList<uint>::Iterator();
913                pKey->ReleaseTrigger = false;
914                pKey->pEvents->clear();
915                dmsg(3,("Key has no more voices now\n"));
916            }
917            else dmsg(1,("gig::Engine: Oops, tried to free a key which contains voices.\n"));
918      }      }
919    
920      /**      /**
# Line 1095  namespace LinuxSampler { namespace gig { Line 1164  namespace LinuxSampler { namespace gig {
1164      }      }
1165    
1166      String Engine::Version() {      String Engine::Version() {
1167          String s = "$Revision: 1.15 $";          String s = "$Revision: 1.18 $";
1168          return s.substr(11, s.size() - 13); // cut dollar signs, spaces and CVS macro keyword          return s.substr(11, s.size() - 13); // cut dollar signs, spaces and CVS macro keyword
1169      }      }
1170    
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