/[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 246 by schoenebeck, Sun Sep 19 14:12:55 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 39  namespace LinuxSampler { namespace gig { Line 40  namespace LinuxSampler { namespace gig {
40          pEventGenerator    = NULL;          pEventGenerator    = NULL;
41          pSysexBuffer       = new RingBuffer<uint8_t>(SYSEX_BUFFER_SIZE, 0);          pSysexBuffer       = new RingBuffer<uint8_t>(SYSEX_BUFFER_SIZE, 0);
42          pEventQueue        = new RingBuffer<Event>(MAX_EVENTS_PER_FRAGMENT, 0);          pEventQueue        = new RingBuffer<Event>(MAX_EVENTS_PER_FRAGMENT, 0);
43          pEventPool         = new RTELMemoryPool<Event>(MAX_EVENTS_PER_FRAGMENT);          pEventPool         = new Pool<Event>(MAX_EVENTS_PER_FRAGMENT);
44          pVoicePool         = new RTELMemoryPool<Voice>(MAX_AUDIO_VOICES);          pVoicePool         = new Pool<Voice>(MAX_AUDIO_VOICES);
45          pActiveKeys        = new RTELMemoryPool<uint>(128);          pActiveKeys        = new Pool<uint>(128);
46          pEvents            = new RTEList<Event>(pEventPool);          pVoiceStealingQueue = new RTList<Event>(pEventPool);
47          pCCEvents          = new RTEList<Event>(pEventPool);          pEvents            = new RTList<Event>(pEventPool);
48            pCCEvents          = new RTList<Event>(pEventPool);
49          for (uint i = 0; i < Event::destination_count; i++) {          for (uint i = 0; i < Event::destination_count; i++) {
50              pSynthesisEvents[i] = new RTEList<Event>(pEventPool);              pSynthesisEvents[i] = new RTList<Event>(pEventPool);
51          }          }
52          for (uint i = 0; i < 128; i++) {          for (uint i = 0; i < 128; i++) {
53              pMIDIKeyInfo[i].pActiveVoices  = new RTEList<Voice>(pVoicePool);              pMIDIKeyInfo[i].pActiveVoices  = new RTList<Voice>(pVoicePool);
54              pMIDIKeyInfo[i].KeyPressed     = false;              pMIDIKeyInfo[i].KeyPressed     = false;
55              pMIDIKeyInfo[i].Active         = false;              pMIDIKeyInfo[i].Active         = false;
56              pMIDIKeyInfo[i].ReleaseTrigger = false;              pMIDIKeyInfo[i].ReleaseTrigger = false;
57              pMIDIKeyInfo[i].pSelf          = NULL;              pMIDIKeyInfo[i].pEvents        = new RTList<Event>(pEventPool);
             pMIDIKeyInfo[i].pEvents        = new RTEList<Event>(pEventPool);  
58          }          }
59          for (Voice* pVoice = pVoicePool->alloc(); pVoice; pVoice = pVoicePool->alloc()) {          for (RTList<Voice>::Iterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {
60              pVoice->SetEngine(this);              iterVoice->SetEngine(this);
61          }          }
62          pVoicePool->clear();          pVoicePool->clear();
63    
# Line 99  namespace LinuxSampler { namespace gig { Line 100  namespace LinuxSampler { namespace gig {
100          if (pMainFilterParameters) delete[] pMainFilterParameters;          if (pMainFilterParameters) delete[] pMainFilterParameters;
101          if (pBasicFilterParameters) delete[] pBasicFilterParameters;          if (pBasicFilterParameters) delete[] pBasicFilterParameters;
102          if (pSynthesisParameters[0]) delete[] pSynthesisParameters[0];          if (pSynthesisParameters[0]) delete[] pSynthesisParameters[0];
103            if (pVoiceStealingQueue) delete pVoiceStealingQueue;
104      }      }
105    
106      void Engine::Enable() {      void Engine::Enable() {
# Line 157  namespace LinuxSampler { namespace gig { Line 159  namespace LinuxSampler { namespace gig {
159          ActiveVoiceCountMax = 0;          ActiveVoiceCountMax = 0;
160          GlobalVolume        = 1.0;          GlobalVolume        = 1.0;
161    
162            // reset voice stealing parameters
163            itLastStolenVoice = RTList<Voice>::Iterator();
164            iuiLastStolenKey  = RTList<uint>::Iterator();
165            pVoiceStealingQueue->clear();
166    
167          // reset to normal chromatic scale (means equal temper)          // reset to normal chromatic scale (means equal temper)
168          memset(&ScaleTuning[0], 0x00, 12);          memset(&ScaleTuning[0], 0x00, 12);
169    
# Line 170  namespace LinuxSampler { namespace gig { Line 177  namespace LinuxSampler { namespace gig {
177              pMIDIKeyInfo[i].KeyPressed     = false;              pMIDIKeyInfo[i].KeyPressed     = false;
178              pMIDIKeyInfo[i].Active         = false;              pMIDIKeyInfo[i].Active         = false;
179              pMIDIKeyInfo[i].ReleaseTrigger = false;              pMIDIKeyInfo[i].ReleaseTrigger = false;
180              pMIDIKeyInfo[i].pSelf          = NULL;              pMIDIKeyInfo[i].itSelf         = Pool<uint>::Iterator();
181          }          }
182    
183          // reset all key groups          // reset all key groups
# Line 178  namespace LinuxSampler { namespace gig { Line 185  namespace LinuxSampler { namespace gig {
185          for (; iter != ActiveKeyGroups.end(); iter++) iter->second = NULL;          for (; iter != ActiveKeyGroups.end(); iter++) iter->second = NULL;
186    
187          // reset all voices          // reset all voices
188          for (Voice* pVoice = pVoicePool->alloc(); pVoice; pVoice = pVoicePool->alloc()) {          for (RTList<Voice>::Iterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {
189              pVoice->Reset();              iterVoice->Reset();
190          }          }
191          pVoicePool->clear();          pVoicePool->clear();
192    
# Line 307  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 318  namespace LinuxSampler { namespace gig { Line 330  namespace LinuxSampler { namespace gig {
330              exit(EXIT_FAILURE);              exit(EXIT_FAILURE);
331          }          }
332    
333          for (Voice* pVoice = pVoicePool->alloc(); pVoice; pVoice = pVoicePool->alloc()) {          for (RTList<Voice>::Iterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {
334              pVoice->pDiskThread = this->pDiskThread;              iterVoice->pDiskThread = this->pDiskThread;
335              dmsg(3,("d"));              dmsg(3,("d"));
336          }          }
337          pVoicePool->clear();          pVoicePool->clear();
# Line 344  namespace LinuxSampler { namespace gig { Line 356  namespace LinuxSampler { namespace gig {
356          pDiskThread->StartThread();          pDiskThread->StartThread();
357          dmsg(1,("OK\n"));          dmsg(1,("OK\n"));
358    
359          for (Voice* pVoice = pVoicePool->first(); pVoice; pVoice = pVoicePool->next()) {          for (RTList<Voice>::Iterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {
360              if (!pVoice->pDiskThread) {              if (!iterVoice->pDiskThread) {
361                  dmsg(0,("Engine -> voice::trigger: !pDiskThread\n"));                  dmsg(0,("Engine -> voice::trigger: !pDiskThread\n"));
362                  exit(EXIT_FAILURE);                  exit(EXIT_FAILURE);
363              }              }
# Line 386  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();
408          for (uint i = 0; i < Event::destination_count; i++) {          for (uint i = 0; i < Event::destination_count; i++) {
409              pSynthesisEvents[i]->clear();              pSynthesisEvents[i]->clear();
410          }          }
411            {
412          // read and copy events from input queue              RTList<uint>::Iterator iuiKey = pActiveKeys->first();
413          Event event = pEventGenerator->CreateEvent();              RTList<uint>::Iterator end    = pActiveKeys->end();
414          while (true) {              for(; iuiKey != end; ++iuiKey) {
415              if (!pEventQueue->pop(&event)) break;                  pMIDIKeyInfo[*iuiKey].pEvents->clear(); // free all events on the key
416              pEvents->alloc_assign(event);              }
417          }          }
418    
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
446          Event* pNextEvent = pEvents->first();          {
447          while (pNextEvent) {              RTList<Event>::Iterator itEvent = pEvents->first();
448              Event* pEvent = pNextEvent;              RTList<Event>::Iterator end     = pEvents->end();
449              pEvents->set_current(pEvent);              for (; itEvent != end; ++itEvent) {
450              pNextEvent = pEvents->next();                  switch (itEvent->Type) {
451              switch (pEvent->Type) {                      case Event::type_note_on:
452                  case Event::type_note_on:                          dmsg(5,("Engine: Note on received\n"));
453                      dmsg(5,("Engine: Note on received\n"));                          ProcessNoteOn(itEvent);
454                      ProcessNoteOn(pEvent);                          break;
455                      break;                      case Event::type_note_off:
456                  case Event::type_note_off:                          dmsg(5,("Engine: Note off received\n"));
457                      dmsg(5,("Engine: Note off received\n"));                          ProcessNoteOff(itEvent);
458                      ProcessNoteOff(pEvent);                          break;
459                      break;                      case Event::type_control_change:
460                  case Event::type_control_change:                          dmsg(5,("Engine: MIDI CC received\n"));
461                      dmsg(5,("Engine: MIDI CC received\n"));                          ProcessControlChange(itEvent);
462                      ProcessControlChange(pEvent);                          break;
463                      break;                      case Event::type_pitchbend:
464                  case Event::type_pitchbend:                          dmsg(5,("Engine: Pitchbend received\n"));
465                      dmsg(5,("Engine: Pitchbend received\n"));                          ProcessPitchbend(itEvent);
466                      ProcessPitchbend(pEvent);                          break;
467                      break;                      case Event::type_sysex:
468                  case Event::type_sysex:                          dmsg(5,("Engine: Sysex received\n"));
469                      dmsg(5,("Engine: Sysex received\n"));                          ProcessSysex(itEvent);
470                      ProcessSysex(pEvent);                          break;
471                      break;                  }
472              }              }
473          }          }
474    
475    
         // render audio from all active voices  
476          int active_voices = 0;          int active_voices = 0;
477          uint* piKey = pActiveKeys->first();  
478          while (piKey) { // iterate through all active keys          // render audio from all active voices
479              midi_key_info_t* pKey = &pMIDIKeyInfo[*piKey];          {
480              pActiveKeys->set_current(piKey);              RTList<uint>::Iterator iuiKey = pActiveKeys->first();
481              piKey = pActiveKeys->next();              RTList<uint>::Iterator end    = pActiveKeys->end();
482                while (iuiKey != end) { // iterate through all active keys
483              Voice* pVoiceNext = pKey->pActiveVoices->first();                  midi_key_info_t* pKey = &pMIDIKeyInfo[*iuiKey];
484              while (pVoiceNext) { // iterate through all voices on this key                  ++iuiKey;
485                  // already get next voice on key  
486                  Voice* pVoice = pVoiceNext;                  RTList<Voice>::Iterator itVoice     = pKey->pActiveVoices->first();
487                  pKey->pActiveVoices->set_current(pVoice);                  RTList<Voice>::Iterator itVoicesEnd = pKey->pActiveVoices->end();
488                  pVoiceNext = pKey->pActiveVoices->next();                  for (; itVoice != itVoicesEnd; ++itVoice) { // iterate through all voices on this key
489                        // now render current voice
490                  // now render current voice                      itVoice->Render(Samples);
491                  pVoice->Render(Samples);                      if (itVoice->IsActive()) active_voices++; // still active
492                  if (pVoice->IsActive()) active_voices++; // still active                      else { // voice reached end, is now inactive
493                  else { // voice reached end, is now inactive                          FreeVoice(itVoice); // remove voice from the list of active voices
494                      KillVoiceImmediately(pVoice); // remove voice from the list of active voices                      }
495                  }                  }
496              }              }
497              pKey->pEvents->clear(); // free all events on the key          }
498    
499    
500            // now render all postponed voices from voice stealing
501            {
502                RTList<Event>::Iterator itVoiceStealEvent = pVoiceStealingQueue->first();
503                RTList<Event>::Iterator end               = pVoiceStealingQueue->end();
504                for (; itVoiceStealEvent != end; ++itVoiceStealEvent) {
505                    Pool<Voice>::Iterator itNewVoice = LaunchVoice(itVoiceStealEvent, itVoiceStealEvent->Param.Note.Layer, itVoiceStealEvent->Param.Note.ReleaseTrigger, false);
506                    if (itNewVoice) {
507                        for (; itNewVoice; itNewVoice = itNewVoice->itChildVoice) {
508                            itNewVoice->Render(Samples);
509                            if (itNewVoice->IsActive()) active_voices++; // still active
510                            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,("gig::Engine: ERROR, voice stealing didn't work out!\n"));
516                }
517            }
518            // reset voice stealing for the new fragment
519            pVoiceStealingQueue->clear();
520            itLastStolenVoice = RTList<Voice>::Iterator();
521            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    
# Line 567  namespace LinuxSampler { namespace gig { Line 649  namespace LinuxSampler { namespace gig {
649      /**      /**
650       *  Assigns and triggers a new voice for the respective MIDI key.       *  Assigns and triggers a new voice for the respective MIDI key.
651       *       *
652       *  @param pNoteOnEvent - key, velocity and time stamp of the event       *  @param itNoteOnEvent - key, velocity and time stamp of the event
653       */       */
654      void Engine::ProcessNoteOn(Event* pNoteOnEvent) {      void Engine::ProcessNoteOn(Pool<Event>::Iterator& itNoteOnEvent) {
655          midi_key_info_t* pKey = &pMIDIKeyInfo[pNoteOnEvent->Param.Note.Key];          midi_key_info_t* pKey = &pMIDIKeyInfo[itNoteOnEvent->Param.Note.Key];
656    
657          pKey->KeyPressed = true; // the MIDI key was now pressed down          pKey->KeyPressed = true; // the MIDI key was now pressed down
658    
659          // cancel release process of voices on this key if needed          // cancel release process of voices on this key if needed
660          if (pKey->Active && !SustainPedal) {          if (pKey->Active && !SustainPedal) {
661              Event* pCancelReleaseEvent = pKey->pEvents->alloc();              RTList<Event>::Iterator itCancelReleaseEvent = pKey->pEvents->allocAppend();
662              if (pCancelReleaseEvent) {              if (itCancelReleaseEvent) {
663                  *pCancelReleaseEvent = *pNoteOnEvent;                  *itCancelReleaseEvent = *itNoteOnEvent;                  // copy event
664                  pCancelReleaseEvent->Type = Event::type_cancel_release; // transform event type                  itCancelReleaseEvent->Type = Event::type_cancel_release; // transform event type
665              }              }
666              else dmsg(1,("Event pool emtpy!\n"));              else dmsg(1,("Event pool emtpy!\n"));
667          }          }
668    
669          // allocate and trigger a new voice for the key          // move note on event to the key's own event list
670          LaunchVoice(pNoteOnEvent);          RTList<Event>::Iterator itNoteOnEventOnKeyList = itNoteOnEvent.moveToEndOf(pKey->pEvents);
671    
672          // finally move note on event to the key's own event list          // allocate and trigger a new voice for the key
673          pEvents->move(pNoteOnEvent, pKey->pEvents);          LaunchVoice(itNoteOnEventOnKeyList, 0, false, true);
674      }      }
675    
676      /**      /**
# Line 597  namespace LinuxSampler { namespace gig { Line 679  namespace LinuxSampler { namespace gig {
679       *  sustain pedal will be released or voice turned inactive by itself (e.g.       *  sustain pedal will be released or voice turned inactive by itself (e.g.
680       *  due to completion of sample playback).       *  due to completion of sample playback).
681       *       *
682       *  @param pNoteOffEvent - key, velocity and time stamp of the event       *  @param itNoteOffEvent - key, velocity and time stamp of the event
683       */       */
684      void Engine::ProcessNoteOff(Event* pNoteOffEvent) {      void Engine::ProcessNoteOff(Pool<Event>::Iterator& itNoteOffEvent) {
685          midi_key_info_t* pKey = &pMIDIKeyInfo[pNoteOffEvent->Param.Note.Key];          midi_key_info_t* pKey = &pMIDIKeyInfo[itNoteOffEvent->Param.Note.Key];
686    
687          pKey->KeyPressed = false; // the MIDI key was now released          pKey->KeyPressed = false; // the MIDI key was now released
688    
689          // release voices on this key if needed          // release voices on this key if needed
690          if (pKey->Active && !SustainPedal) {          if (pKey->Active && !SustainPedal) {
691              pNoteOffEvent->Type = Event::type_release; // transform event type              itNoteOffEvent->Type = Event::type_release; // transform event type
692          }          }
693    
694            // move event to the key's own event list
695            RTList<Event>::Iterator itNoteOffEventOnKeyList = itNoteOffEvent.moveToEndOf(pKey->pEvents);
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(pNoteOffEvent, 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          }          }
   
         // move event to the key's own event list  
         pEvents->move(pNoteOffEvent, pKey->pEvents);  
702      }      }
703    
704      /**      /**
705       *  Moves pitchbend event from the general (input) event list to the pitch       *  Moves pitchbend event from the general (input) event list to the pitch
706       *  event list.       *  event list.
707       *       *
708       *  @param pPitchbendEvent - absolute pitch value and time stamp of the event       *  @param itPitchbendEvent - absolute pitch value and time stamp of the event
709       */       */
710      void Engine::ProcessPitchbend(Event* pPitchbendEvent) {      void Engine::ProcessPitchbend(Pool<Event>::Iterator& itPitchbendEvent) {
711          this->Pitch = pPitchbendEvent->Param.Pitch.Pitch; // store current pitch value          this->Pitch = itPitchbendEvent->Param.Pitch.Pitch; // store current pitch value
712          pEvents->move(pPitchbendEvent, pSynthesisEvents[Event::destination_vco]);          itPitchbendEvent.moveToEndOf(pSynthesisEvents[Event::destination_vco]);
713      }      }
714    
715      /**      /**
# Line 635  namespace LinuxSampler { namespace gig { Line 717  namespace LinuxSampler { namespace gig {
717       *  called by the ProcessNoteOn() method and by the voices itself       *  called by the ProcessNoteOn() method and by the voices itself
718       *  (e.g. to spawn further voices on the same key for layered sounds).       *  (e.g. to spawn further voices on the same key for layered sounds).
719       *       *
720       *  @param pNoteOnEvent        - key, velocity and time stamp of the event       *  @param itNoteOnEvent       - key, velocity and time stamp of the event
721       *  @param iLayer              - layer index for the new voice (optional - only       *  @param iLayer              - layer index for the new voice (optional - only
722       *                               in case of layered sounds of course)       *                               in case of layered sounds of course)
723       *  @param ReleaseTriggerVoice - if new voice is a release triggered voice       *  @param ReleaseTriggerVoice - if new voice is a release triggered voice
724       *                               (optional, default = false)       *                               (optional, default = false)
725         *  @param VoiceStealing       - if voice stealing should be performed
726         *                               when there is no free voice
727         *                               (optional, default = true)
728         *  @returns pointer to new voice or NULL if there was no free voice or
729         *           if an error occured while trying to trigger the new voice
730       */       */
731      void Engine::LaunchVoice(Event* pNoteOnEvent, int iLayer, bool ReleaseTriggerVoice) {      Pool<Voice>::Iterator Engine::LaunchVoice(Pool<Event>::Iterator& itNoteOnEvent, int iLayer, bool ReleaseTriggerVoice, bool VoiceStealing) {
732          midi_key_info_t* pKey = &pMIDIKeyInfo[pNoteOnEvent->Param.Note.Key];          midi_key_info_t* pKey = &pMIDIKeyInfo[itNoteOnEvent->Param.Note.Key];
733    
734          // allocate a new voice for the key          // allocate a new voice for the key
735          Voice* pNewVoice = pKey->pActiveVoices->alloc();          Pool<Voice>::Iterator itNewVoice = pKey->pActiveVoices->allocAppend();
736          if (pNewVoice) {          if (itNewVoice) {
737              // launch the new voice              // launch the new voice
738              if (pNewVoice->Trigger(pNoteOnEvent, 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(pNewVoice);                  pKey->pActiveVoices->free(itNewVoice);
741              }              }
742              else { // on success              else { // on success
743                  uint** ppKeyGroup = NULL;                  uint** ppKeyGroup = NULL;
744                  if (pNewVoice->KeyGroup) { // if this voice / key belongs to a key group                  if (itNewVoice->KeyGroup) { // if this voice / key belongs to a key group
745                      ppKeyGroup = &ActiveKeyGroups[pNewVoice->KeyGroup];                      ppKeyGroup = &ActiveKeyGroups[itNewVoice->KeyGroup];
746                      if (*ppKeyGroup) { // if there's already an active key in that key group                      if (*ppKeyGroup) { // if there's already an active key in that key group
747                          midi_key_info_t* pOtherKey = &pMIDIKeyInfo[**ppKeyGroup];                          midi_key_info_t* pOtherKey = &pMIDIKeyInfo[**ppKeyGroup];
748                          // kill all voices on the (other) key                          // kill all voices on the (other) key
749                          Voice* pVoiceToBeKilled = pOtherKey->pActiveVoices->first();                          RTList<Voice>::Iterator itVoiceToBeKilled = pOtherKey->pActiveVoices->first();
750                          while (pVoiceToBeKilled) {                          RTList<Voice>::Iterator end               = pOtherKey->pActiveVoices->end();
751                              Voice* pVoiceToBeKilledNext = pOtherKey->pActiveVoices->next();                          for (; itVoiceToBeKilled != end; ++itVoiceToBeKilled) {
752                              if (pVoiceToBeKilled->Type != Voice::type_release_trigger) pVoiceToBeKilled->Kill(pNoteOnEvent);                              if (itVoiceToBeKilled->Type != Voice::type_release_trigger) itVoiceToBeKilled->Kill(itNoteOnEvent);
                             pOtherKey->pActiveVoices->set_current(pVoiceToBeKilled);  
                             pVoiceToBeKilled = pVoiceToBeKilledNext;  
753                          }                          }
754                      }                      }
755                  }                  }
756                  if (!pKey->Active) { // mark as active key                  if (!pKey->Active) { // mark as active key
757                      pKey->Active = true;                      pKey->Active = true;
758                      pKey->pSelf  = pActiveKeys->alloc();                      pKey->itSelf = pActiveKeys->allocAppend();
759                      *pKey->pSelf = pNoteOnEvent->Param.Note.Key;                      *pKey->itSelf = itNoteOnEvent->Param.Note.Key;
760                  }                  }
761                  if (pNewVoice->KeyGroup) {                  if (itNewVoice->KeyGroup) {
762                      *ppKeyGroup = pKey->pSelf; // put key as the (new) active key to its key group                      *ppKeyGroup = &*pKey->itSelf; // put key as the (new) active key to its key group
763                  }                  }
764                  if (pNewVoice->Type == Voice::type_release_trigger_required) pKey->ReleaseTrigger = true; // mark key for the need of release triggered voice(s)                  if (itNewVoice->Type == Voice::type_release_trigger_required) pKey->ReleaseTrigger = true; // mark key for the need of release triggered voice(s)
765                    return itNewVoice; // success
766              }              }
767          }          }
768          else std::cerr << "No free voice!" << std::endl << std::flush;          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
789      }      }
790    
791      /**      /**
792       *  Immediately kills the voice given with pVoice (no matter if sustain is       *  Will be called by LaunchVoice() method in case there are no free
793       *  pressed or not) and removes it from the MIDI key's list of active voice.       *  voices left. This method will select and kill one old voice for
794       *  This method will e.g. be called if a voice went inactive by itself.       *  voice stealing and postpone the note-on event until the selected
795         *  voice actually died.
796       *       *
797       *  @param pVoice - points to the voice to be killed       *  @param itNoteOnEvent - key, velocity and time stamp of the event
798       */       */
799      void Engine::KillVoiceImmediately(Voice* pVoice) {      void Engine::StealVoice(Pool<Event>::Iterator& itNoteOnEvent) {
800          if (pVoice) {          if (!pEventPool->poolIsEmpty()) {
801              if (pVoice->IsActive()) pVoice->KillImmediately();  
802                RTList<uint>::Iterator  iuiOldestKey;
803                RTList<Voice>::Iterator itOldestVoice;
804    
805                // Select one voice for voice stealing
806                switch (VOICE_STEAL_ALGORITHM) {
807    
808                    // try to pick the oldest voice on the key where the new
809                    // voice should be spawned, if there is no voice on that
810                    // key, or no voice left to kill there, then procceed with
811                    // 'oldestkey' algorithm
812                    case voice_steal_algo_keymask: {
813                        midi_key_info_t* pOldestKey = &pMIDIKeyInfo[itNoteOnEvent->Param.Note.Key];
814                        if (itLastStolenVoice) {
815                            itOldestVoice = itLastStolenVoice;
816                            ++itOldestVoice;
817                        }
818                        else { // no voice stolen in this audio fragment cycle yet
819                            itOldestVoice = pOldestKey->pActiveVoices->first();
820                        }
821                        if (itOldestVoice) {
822                            iuiOldestKey = pOldestKey->itSelf;
823                            break; // selection succeeded
824                        }
825                    } // no break - intentional !
826    
827              midi_key_info_t* pKey = &pMIDIKeyInfo[pVoice->MIDIKey];                  // try to pick the oldest voice on the oldest active key
828                    // (caution: must stay after 'keymask' algorithm !)
829                    case voice_steal_algo_oldestkey: {
830                        if (itLastStolenVoice) {
831                            midi_key_info_t* pOldestKey = &pMIDIKeyInfo[*iuiLastStolenKey];
832                            itOldestVoice = itLastStolenVoice;
833                            ++itOldestVoice;
834                            if (!itOldestVoice) {
835                                iuiOldestKey = iuiLastStolenKey;
836                                ++iuiOldestKey;
837                                if (iuiOldestKey) {
838                                    midi_key_info_t* pOldestKey = &pMIDIKeyInfo[*iuiOldestKey];
839                                    itOldestVoice = pOldestKey->pActiveVoices->first();
840                                }
841                                else {
842                                    dmsg(1,("gig::Engine: Warning, too less voices, even for voice stealing! - Better recompile with higher MAX_AUDIO_VOICES.\n"));
843                                    return;
844                                }
845                            }
846                            else iuiOldestKey = iuiLastStolenKey;
847                        }
848                        else { // no voice stolen in this audio fragment cycle yet
849                            iuiOldestKey = pActiveKeys->first();
850                            midi_key_info_t* pOldestKey = &pMIDIKeyInfo[*iuiOldestKey];
851                            itOldestVoice = pOldestKey->pActiveVoices->first();
852                        }
853                        break;
854                    }
855    
856                    // don't steal anything
857                    case voice_steal_algo_none:
858                    default: {
859                        dmsg(1,("No free voice (voice stealing disabled)!\n"));
860                        return;
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
868                itOldestVoice->Kill(itNoteOnEvent);
869                // remember which voice on which key we stole, so we can simply proceed for the next voice stealing
870                this->itLastStolenVoice = itOldestVoice;
871                this->iuiLastStolenKey = iuiOldestKey;
872            }
873            else dmsg(1,("Event pool emtpy!\n"));
874        }
875    
876        /**
877         *  Removes the given voice from the MIDI key's list of active voices.
878         *  This method will be called when a voice went inactive, e.g. because
879         *  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 freed
883         */
884        void Engine::FreeVoice(Pool<Voice>::Iterator& itVoice) {
885            if (itVoice) {
886                midi_key_info_t* pKey = &pMIDIKeyInfo[itVoice->MIDIKey];
887    
888                uint keygroup = itVoice->KeyGroup;
889    
890              // free the voice object              // free the voice object
891              pVoicePool->free(pVoice);              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->is_empty()) {              if (pKey->pActiveVoices->isEmpty() && keygroup) {
895                  if (pVoice->KeyGroup) { // if voice / key belongs to a key group                  uint** ppKeyGroup = &ActiveKeyGroups[keygroup];
896                      uint** ppKeyGroup = &ActiveKeyGroups[pVoice->KeyGroup];                  if (*ppKeyGroup == &*pKey->itSelf) *ppKeyGroup = NULL; // remove key from key group
                     if (*ppKeyGroup == pKey->pSelf) *ppKeyGroup = NULL; // remove key from key group  
                 }  
                 pKey->Active = false;  
                 pActiveKeys->free(pKey->pSelf); // remove key from list of active keys  
                 pKey->pSelf = NULL;  
                 pKey->ReleaseTrigger = false;  
                 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      /**      /**
921       *  Reacts on supported control change commands (e.g. pitch bend wheel,       *  Reacts on supported control change commands (e.g. pitch bend wheel,
922       *  modulation wheel, aftertouch).       *  modulation wheel, aftertouch).
923       *       *
924       *  @param pControlChangeEvent - controller, value and time stamp of the event       *  @param itControlChangeEvent - controller, value and time stamp of the event
925       */       */
926      void Engine::ProcessControlChange(Event* pControlChangeEvent) {      void Engine::ProcessControlChange(Pool<Event>::Iterator& itControlChangeEvent) {
927          dmsg(4,("Engine::ContinuousController cc=%d v=%d\n", pControlChangeEvent->Param.CC.Controller, pControlChangeEvent->Param.CC.Value));          dmsg(4,("Engine::ContinuousController cc=%d v=%d\n", itControlChangeEvent->Param.CC.Controller, itControlChangeEvent->Param.CC.Value));
928    
929          switch (pControlChangeEvent->Param.CC.Controller) {          switch (itControlChangeEvent->Param.CC.Controller) {
930              case 64: {              case 64: {
931                  if (pControlChangeEvent->Param.CC.Value >= 64 && !SustainPedal) {                  if (itControlChangeEvent->Param.CC.Value >= 64 && !SustainPedal) {
932                      dmsg(4,("PEDAL DOWN\n"));                      dmsg(4,("PEDAL DOWN\n"));
933                      SustainPedal = true;                      SustainPedal = true;
934    
935                      // cancel release process of voices if necessary                      // cancel release process of voices if necessary
936                      uint* piKey = pActiveKeys->first();                      RTList<uint>::Iterator iuiKey = pActiveKeys->first();
937                      if (piKey) {                      if (iuiKey) {
938                          pControlChangeEvent->Type = Event::type_cancel_release; // transform event type                          itControlChangeEvent->Type = Event::type_cancel_release; // transform event type
939                          while (piKey) {                          while (iuiKey) {
940                              midi_key_info_t* pKey = &pMIDIKeyInfo[*piKey];                              midi_key_info_t* pKey = &pMIDIKeyInfo[*iuiKey];
941                              pActiveKeys->set_current(piKey);                              ++iuiKey;
                             piKey = pActiveKeys->next();  
942                              if (!pKey->KeyPressed) {                              if (!pKey->KeyPressed) {
943                                  Event* pNewEvent = pKey->pEvents->alloc();                                  RTList<Event>::Iterator itNewEvent = pKey->pEvents->allocAppend();
944                                  if (pNewEvent) *pNewEvent = *pControlChangeEvent; // copy event to the key's own event list                                  if (itNewEvent) *itNewEvent = *itControlChangeEvent; // copy event to the key's own event list
945                                  else dmsg(1,("Event pool emtpy!\n"));                                  else dmsg(1,("Event pool emtpy!\n"));
946                              }                              }
947                          }                          }
948                      }                      }
949                  }                  }
950                  if (pControlChangeEvent->Param.CC.Value < 64 && SustainPedal) {                  if (itControlChangeEvent->Param.CC.Value < 64 && SustainPedal) {
951                      dmsg(4,("PEDAL UP\n"));                      dmsg(4,("PEDAL UP\n"));
952                      SustainPedal = false;                      SustainPedal = false;
953    
954                      // release voices if their respective key is not pressed                      // release voices if their respective key is not pressed
955                      uint* piKey = pActiveKeys->first();                      RTList<uint>::Iterator iuiKey = pActiveKeys->first();
956                      if (piKey) {                      if (iuiKey) {
957                          pControlChangeEvent->Type = Event::type_release; // transform event type                          itControlChangeEvent->Type = Event::type_release; // transform event type
958                          while (piKey) {                          while (iuiKey) {
959                              midi_key_info_t* pKey = &pMIDIKeyInfo[*piKey];                              midi_key_info_t* pKey = &pMIDIKeyInfo[*iuiKey];
960                              pActiveKeys->set_current(piKey);                              ++iuiKey;
                             piKey = pActiveKeys->next();  
961                              if (!pKey->KeyPressed) {                              if (!pKey->KeyPressed) {
962                                  Event* pNewEvent = pKey->pEvents->alloc();                                  RTList<Event>::Iterator itNewEvent = pKey->pEvents->allocAppend();
963                                  if (pNewEvent) *pNewEvent = *pControlChangeEvent; // copy event to the key's own event list                                  if (itNewEvent) *itNewEvent = *itControlChangeEvent; // copy event to the key's own event list
964                                  else dmsg(1,("Event pool emtpy!\n"));                                  else dmsg(1,("Event pool emtpy!\n"));
965                              }                              }
966                          }                          }
# Line 770  namespace LinuxSampler { namespace gig { Line 971  namespace LinuxSampler { namespace gig {
971          }          }
972    
973          // update controller value in the engine's controller table          // update controller value in the engine's controller table
974          ControllerTable[pControlChangeEvent->Param.CC.Controller] = pControlChangeEvent->Param.CC.Value;          ControllerTable[itControlChangeEvent->Param.CC.Controller] = itControlChangeEvent->Param.CC.Value;
975    
976          // move event from the unsorted event list to the control change event list          // move event from the unsorted event list to the control change event list
977          pEvents->move(pControlChangeEvent, pCCEvents);          itControlChangeEvent.moveToEndOf(pCCEvents);
978      }      }
979    
980      /**      /**
981       *  Reacts on MIDI system exclusive messages.       *  Reacts on MIDI system exclusive messages.
982       *       *
983       *  @param pSysexEvent - sysex data size and time stamp of the sysex event       *  @param itSysexEvent - sysex data size and time stamp of the sysex event
984       */       */
985      void Engine::ProcessSysex(Event* pSysexEvent) {      void Engine::ProcessSysex(Pool<Event>::Iterator& itSysexEvent) {
986          RingBuffer<uint8_t>::NonVolatileReader reader = pSysexBuffer->get_non_volatile_reader();          RingBuffer<uint8_t>::NonVolatileReader reader = pSysexBuffer->get_non_volatile_reader();
987    
988          uint8_t exclusive_status, id;          uint8_t exclusive_status, id;
# Line 829  namespace LinuxSampler { namespace gig { Line 1030  namespace LinuxSampler { namespace gig {
1030          }          }
1031    
1032          free_sysex_data: // finally free sysex data          free_sysex_data: // finally free sysex data
1033          pSysexBuffer->increment_read_ptr(pSysexEvent->Param.Sysex.Size);          pSysexBuffer->increment_read_ptr(itSysexEvent->Param.Sysex.Size);
1034      }      }
1035    
1036      /**      /**
# Line 963  namespace LinuxSampler { namespace gig { Line 1164  namespace LinuxSampler { namespace gig {
1164      }      }
1165    
1166      String Engine::Version() {      String Engine::Version() {
1167          String s = "$Revision: 1.13 $";          String s = "$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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