/[svn]/linuxsampler/trunk/src/engines/EngineBase.h
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revision 2559 by schoenebeck, Sun May 18 17:38:25 2014 UTC revision 3205 by schoenebeck, Wed May 24 20:05:38 2017 UTC
# Line 4  Line 4 
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) 2005-2008 Christian Schoenebeck                         *   *   Copyright (C) 2005-2008 Christian Schoenebeck                         *
7   *   Copyright (C) 2009-2013 Christian Schoenebeck and Grigor Iliev        *   *   Copyright (C) 2009-2012 Christian Schoenebeck and Grigor Iliev        *
8     *   Copyright (C) 2012-2017 Christian Schoenebeck and Andreas Persson     *
9   *                                                                         *   *                                                                         *
10   *   This program is free software; you can redistribute it and/or modify  *   *   This program is free software; you can redistribute it and/or modify  *
11   *   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 32  Line 33 
33  #include "InstrumentManager.h"  #include "InstrumentManager.h"
34  #include "../common/global_private.h"  #include "../common/global_private.h"
35    
36    // a bit headroom over CONFIG_MAX_VOICES to avoid minor complications i.e. under voice stealing conditions
37    #define MAX_NOTES_HEADROOM  3
38    #define GLOBAL_MAX_NOTES    (GLOBAL_MAX_VOICES * MAX_NOTES_HEADROOM)
39    
40  namespace LinuxSampler {  namespace LinuxSampler {
41    
# Line 45  namespace LinuxSampler { Line 49  namespace LinuxSampler {
49          class IM  /* Instrument Manager */,          class IM  /* Instrument Manager */,
50          class I   /* Instrument */          class I   /* Instrument */
51      >      >
52      class EngineBase: public AbstractEngine, public RegionPools<R>, public VoicePool<V> {      class EngineBase: public AbstractEngine, public RegionPools<R>, public NotePool<V> {
53    
54          public:          public:
55                typedef typename RTList< Note<V> >::Iterator NoteIterator;
56              typedef typename RTList<V>::Iterator VoiceIterator;              typedef typename RTList<V>::Iterator VoiceIterator;
57              typedef typename Pool<V>::Iterator PoolVoiceIterator;              typedef typename Pool<V>::Iterator PoolVoiceIterator;
58              typedef typename RTList<RR*>::Iterator RootRegionIterator;              typedef typename RTList<RR*>::Iterator RootRegionIterator;
59              typedef typename MidiKeyboardManager<V>::MidiKey MidiKey;              typedef typename MidiKeyboardManager<V>::MidiKey MidiKey;
60                            
61              EngineBase() : SuspendedRegions(128) {              EngineBase() : noteIDPool(GLOBAL_MAX_NOTES), SuspendedRegions(128) {
62                  pDiskThread          = NULL;                  pDiskThread          = NULL;
63                    pNotePool            = new Pool< Note<V> >(GLOBAL_MAX_NOTES);
64                    pNotePool->setPoolElementIDsReservedBits(INSTR_SCRIPT_EVENT_ID_RESERVED_BITS);
65                  pVoicePool           = new Pool<V>(GLOBAL_MAX_VOICES);                  pVoicePool           = new Pool<V>(GLOBAL_MAX_VOICES);
66                  pRegionPool[0]       = new Pool<R*>(GLOBAL_MAX_VOICES);                  pRegionPool[0]       = new Pool<R*>(GLOBAL_MAX_VOICES);
67                  pRegionPool[1]       = new Pool<R*>(GLOBAL_MAX_VOICES);                  pRegionPool[1]       = new Pool<R*>(GLOBAL_MAX_VOICES);
68                  pVoiceStealingQueue  = new RTList<Event>(pEventPool);                  pVoiceStealingQueue  = new RTList<Event>(pEventPool);
69                  iMaxDiskStreams      = GLOBAL_MAX_STREAMS;                  iMaxDiskStreams      = GLOBAL_MAX_STREAMS;
70    
71                  for (VoiceIterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {                  // init all Voice objects in voice pool
72                    for (VoiceIterator iterVoice = pVoicePool->allocAppend();
73                         iterVoice; iterVoice = pVoicePool->allocAppend())
74                    {
75                      iterVoice->SetEngine(this);                      iterVoice->SetEngine(this);
76                  }                  }
77                  pVoicePool->clear();                  pVoicePool->clear();
78    
79                    // init all Note objects in note pool
80                    for (NoteIterator itNote = pNotePool->allocAppend(); itNote;
81                         itNote = pNotePool->allocAppend())
82                    {
83                        itNote->init(pVoicePool, &noteIDPool);
84                    }
85                    pNotePool->clear();
86    
87                  ResetInternal();                  ResetInternal();
88                  ResetScaleTuning();                  ResetScaleTuning();
89                  ResetSuspendedRegions();                  ResetSuspendedRegions();
# Line 79  namespace LinuxSampler { Line 97  namespace LinuxSampler {
97                      dmsg(1,("OK\n"));                      dmsg(1,("OK\n"));
98                  }                  }
99    
100                    if (pNotePool) {
101                        pNotePool->clear();
102                        delete pNotePool;
103                    }
104    
105                  if (pVoicePool) {                  if (pVoicePool) {
106                      pVoicePool->clear();                      pVoicePool->clear();
107                      delete pVoicePool;                      delete pVoicePool;
# Line 140  namespace LinuxSampler { Line 163  namespace LinuxSampler {
163                                  dmsg(5,("Engine: Sysex received\n"));                                  dmsg(5,("Engine: Sysex received\n"));
164                                  ProcessSysex(itEvent);                                  ProcessSysex(itEvent);
165                                  break;                                  break;
166                                default: ; // noop
167                          }                          }
168                      }                      }
169                  }                  }
# Line 235  namespace LinuxSampler { Line 259  namespace LinuxSampler {
259                      pChannel->ResetRegionsInUse(pRegionPool);                      pChannel->ResetRegionsInUse(pRegionPool);
260                  }                  }
261    
262                    // FIXME: Shouldn't all those pool elements be freed before resizing the pools?
263                  try {                  try {
264                      pVoicePool->resizePool(iVoices);                      pVoicePool->resizePool(iVoices);
265                        pNotePool->resizePool(iVoices * MAX_NOTES_HEADROOM);
266                        noteIDPool.resizePool(iVoices * MAX_NOTES_HEADROOM);
267                  } catch (...) {                  } catch (...) {
268                      throw Exception("FATAL: Could not resize voice pool!");                      throw Exception("FATAL: Could not resize voice pool!");
269                  }                  }
270    
271                  for (VoiceIterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {                  for (VoiceIterator iterVoice = pVoicePool->allocAppend();
272                         iterVoice; iterVoice = pVoicePool->allocAppend())
273                    {
274                      iterVoice->SetEngine(this);                      iterVoice->SetEngine(this);
275                      iterVoice->pDiskThread = this->pDiskThread;                      iterVoice->pDiskThread = this->pDiskThread;
276                  }                  }
277                  pVoicePool->clear();                  pVoicePool->clear();
278    
279                    for (NoteIterator itNote = pNotePool->allocAppend(); itNote;
280                         itNote = pNotePool->allocAppend())
281                    {
282                        itNote->init(pVoicePool, &noteIDPool);
283                    }
284                    pNotePool->clear();
285    
286                  PostSetMaxVoices(iVoices);                  PostSetMaxVoices(iVoices);
287                  ResumeAll();                  ResumeAll();
288              }              }
# Line 315  namespace LinuxSampler { Line 351  namespace LinuxSampler {
351                      MinFadeOutSamples = MaxSamplesPerCycle;                      MinFadeOutSamples = MaxSamplesPerCycle;
352                      // lower minimum release time                      // lower minimum release time
353                      const float minReleaseTime = (float) MaxSamplesPerCycle / (float) SampleRate;                      const float minReleaseTime = (float) MaxSamplesPerCycle / (float) SampleRate;
354                        pVoicePool->clear();
355                      for (VoiceIterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {                      for (VoiceIterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {
356                          iterVoice->CalculateFadeOutCoeff(minReleaseTime, SampleRate);                          iterVoice->CalculateFadeOutCoeff(minReleaseTime, SampleRate);
357                      }                      }
# Line 335  namespace LinuxSampler { Line 372  namespace LinuxSampler {
372                      exit(EXIT_FAILURE);                      exit(EXIT_FAILURE);
373                  }                  }
374    
375                    pVoicePool->clear();
376                  for (VoiceIterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {                  for (VoiceIterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {
377                      iterVoice->pDiskThread = this->pDiskThread;                      iterVoice->pDiskThread = this->pDiskThread;
378                      dmsg(3,("d"));                      dmsg(3,("d"));
# Line 432  namespace LinuxSampler { Line 470  namespace LinuxSampler {
470               * @param pRegion - region the engine shall stop using               * @param pRegion - region the engine shall stop using
471               */               */
472              virtual void Suspend(RR* pRegion) {              virtual void Suspend(RR* pRegion) {
473                  dmsg(2,("EngineBase: Suspending Region %x ...\n",pRegion));                  dmsg(2,("EngineBase: Suspending Region %p ...\n",(void*)pRegion));
474                  {                  {
475                      LockGuard lock(SuspendedRegionsMutex);                      LockGuard lock(SuspendedRegionsMutex);
476                      SuspensionChangeOngoing.Set(true);                      SuspensionChangeOngoing.Set(true);
477                      pPendingRegionSuspension = pRegion;                      pPendingRegionSuspension = pRegion;
478                      SuspensionChangeOngoing.WaitAndUnlockIf(true);                      SuspensionChangeOngoing.WaitAndUnlockIf(true);
479                  }                  }
480                  dmsg(2,("EngineBase: Region %x suspended.",pRegion));                  dmsg(2,("EngineBase: Region %p suspended.",(void*)pRegion));
481              }              }
482    
483              /**              /**
# Line 449  namespace LinuxSampler { Line 487  namespace LinuxSampler {
487               * @param pRegion - region the engine shall be allowed to use again               * @param pRegion - region the engine shall be allowed to use again
488               */               */
489              virtual void Resume(RR* pRegion) {              virtual void Resume(RR* pRegion) {
490                  dmsg(2,("EngineBase: Resuming Region %x ...\n",pRegion));                  dmsg(2,("EngineBase: Resuming Region %p ...\n",(void*)pRegion));
491                  {                  {
492                      LockGuard lock(SuspendedRegionsMutex);                      LockGuard lock(SuspendedRegionsMutex);
493                      SuspensionChangeOngoing.Set(true);                      SuspensionChangeOngoing.Set(true);
494                      pPendingRegionResumption = pRegion;                      pPendingRegionResumption = pRegion;
495                      SuspensionChangeOngoing.WaitAndUnlockIf(true);                      SuspensionChangeOngoing.WaitAndUnlockIf(true);
496                  }                  }
497                  dmsg(2,("EngineBase: Region %x resumed.\n",pRegion));                  dmsg(2,("EngineBase: Region %p resumed.\n",(void*)pRegion));
498              }              }
499    
500              virtual void ResetSuspendedRegions() {              virtual void ResetSuspendedRegions() {
# Line 559  namespace LinuxSampler { Line 597  namespace LinuxSampler {
597              }              }
598    
599              // implementation of abstract method derived from class 'LinuxSampler::RegionPools'              // implementation of abstract method derived from class 'LinuxSampler::RegionPools'
600              virtual Pool<R*>* GetRegionPool(int index) {              virtual Pool<R*>* GetRegionPool(int index) OVERRIDE {
601                  if (index < 0 || index > 1) throw Exception("Index out of bounds");                  if (index < 0 || index > 1) throw Exception("Index out of bounds");
602                  return pRegionPool[index];                  return pRegionPool[index];
603              }              }
604    
605              // implementation of abstract method derived from class 'LinuxSampler::VoicePool'              // implementation of abstract methods derived from class 'LinuxSampler::NotePool'
606              virtual Pool<V>* GetVoicePool() { return pVoicePool; }              virtual Pool<V>* GetVoicePool() OVERRIDE { return pVoicePool; }
607                virtual Pool< Note<V> >* GetNotePool() OVERRIDE { return pNotePool; }
608                virtual Pool<note_id_t>* GetNoteIDPool() OVERRIDE { return &noteIDPool; }
609    
610              D* GetDiskThread() { return pDiskThread; }              D* GetDiskThread() { return pDiskThread; }
611    
# Line 585  namespace LinuxSampler { Line 625  namespace LinuxSampler {
625                  }                  }
626    
627                  virtual bool Process(MidiKey* pMidiKey) OVERRIDE {                  virtual bool Process(MidiKey* pMidiKey) OVERRIDE {
628                      VoiceIterator itVoice = pMidiKey->pActiveVoices->first();                      NoteIterator  itNote  = pMidiKey->pActiveNotes->first();
629                        VoiceIterator itVoice = itNote->pActiveVoices->first();
630                      // if current key is not associated with this region, skip this key                      // if current key is not associated with this region, skip this key
631                      if (itVoice->GetRegion()->GetParent() != pPendingRegionSuspension) return false;                      if (itVoice->GetRegion()->GetParent() != pPendingRegionSuspension) return false;
632    
# Line 608  namespace LinuxSampler { Line 649  namespace LinuxSampler {
649    
650              int                          ActiveVoiceCountTemp;  ///< number of currently active voices (for internal usage, will be used for incrementation)              int                          ActiveVoiceCountTemp;  ///< number of currently active voices (for internal usage, will be used for incrementation)
651              VoiceIterator                itLastStolenVoice;     ///< Only for voice stealing: points to the last voice which was theft in current audio fragment, NULL otherwise.              VoiceIterator                itLastStolenVoice;     ///< Only for voice stealing: points to the last voice which was theft in current audio fragment, NULL otherwise.
652                NoteIterator                 itLastStolenNote;      ///< Only for voice stealing: points to the last note from which was theft in current audio fragment, NULL otherwise.
653              RTList<uint>::Iterator       iuiLastStolenKey;      ///< Only for voice stealing: key number of last key on which the last voice was theft in current audio fragment, NULL otherwise.              RTList<uint>::Iterator       iuiLastStolenKey;      ///< Only for voice stealing: key number of last key on which the last voice was theft in current audio fragment, NULL otherwise.
654              EngineChannelBase<V, R, I>*  pLastStolenChannel;    ///< Only for voice stealing: points to the engine channel on which the previous voice was stolen in this audio fragment.              EngineChannelBase<V, R, I>*  pLastStolenChannel;    ///< Only for voice stealing: points to the engine channel on which the previous voice was stolen in this audio fragment.
655              VoiceIterator                itLastStolenVoiceGlobally; ///< Same as itLastStolenVoice, but engine globally              VoiceIterator                itLastStolenVoiceGlobally; ///< Same as itLastStolenVoice, but engine globally
656                NoteIterator                 itLastStolenNoteGlobally; ///< Same as itLastStolenNote, but engine globally
657              RTList<uint>::Iterator       iuiLastStolenKeyGlobally;  ///< Same as iuiLastStolenKey, but engine globally              RTList<uint>::Iterator       iuiLastStolenKeyGlobally;  ///< Same as iuiLastStolenKey, but engine globally
658              RTList<Event>*               pVoiceStealingQueue;   ///< All voice-launching events which had to be postponed due to free voice shortage.              RTList<Event>*               pVoiceStealingQueue;   ///< All voice-launching events which had to be postponed due to free voice shortage.
659              Mutex                        ResetInternalMutex;    ///< Mutex to protect the ResetInternal function for concurrent usage (e.g. by the lscp and instrument loader threads).              Mutex                        ResetInternalMutex;    ///< Mutex to protect the ResetInternal function for concurrent usage (e.g. by the lscp and instrument loader threads).
660              int iMaxDiskStreams;              int iMaxDiskStreams;
661    
662                NoteBase* NoteByID(note_id_t id) OVERRIDE {
663                    NoteIterator itNote = GetNotePool()->fromID(id);
664                    if (!itNote) return NULL;
665                    return &*itNote;
666                }
667    
668                /**
669                 * Gets a new @c Note object from the note pool, initializes it
670                 * appropriately, links it with requested parent note (if
671                 * requested), moves it to the appropriate key's list of active
672                 * notes it, and sticks the new note's unique ID to the
673                 * passed @a pNoteOnEvent.
674                 *
675                 * @param pEngineChannel - engine channel on which this event happened
676                 * @param pNoteOnEvent - event which caused this
677                 * @returns new note's unique ID (or zero on error)
678                 */
679                note_id_t LaunchNewNote(LinuxSampler::EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent) OVERRIDE {
680                    EngineChannelBase<V, R, I>* pChannel = static_cast<EngineChannelBase<V, R, I>*>(pEngineChannel);
681                    Pool< Note<V> >* pNotePool = GetNotePool();
682    
683                    if (pNotePool->poolIsEmpty()) {
684                        dmsg(1,("Engine: Could not launch new note; Note pool empty!\n"));
685                        return 0; // error
686                    }
687    
688                    // create a new note (for new voices to be assigned to)
689                    //NoteIterator itNewNote = pKey->pActiveNotes->allocAppend();
690                    NoteIterator itNewNote = pNotePool->allocAppend();
691                    const note_id_t newNoteID = pNotePool->getID(itNewNote);
692    
693                    // remember the engine's time when this note was triggered exactly
694                    itNewNote->triggerSchedTime = itNoteOnEvent->SchedTime();
695    
696                    // usually the new note (and its subsequent voices) will be
697                    // allocated on the key provided by the event's note number,
698                    // however if this new note is requested not to be a regular
699                    // note, but rather a child note, then this new note will be
700                    // allocated on the parent note's key instead in order to
701                    // release the child note simultaniously with its parent note
702                    itNewNote->hostKey = itNoteOnEvent->Param.Note.Key;
703    
704                    // in case this new note was requested to be a child note,
705                    // then retrieve its parent note and link them with each other
706                    const note_id_t parentNoteID = itNoteOnEvent->Param.Note.ParentNoteID;
707                    if (parentNoteID) {
708                        NoteIterator itParentNote = pNotePool->fromID(parentNoteID);                        
709                        if (itParentNote) {
710                            RTList<note_id_t>::Iterator itChildNoteID = itParentNote->pChildNotes->allocAppend();
711                            if (itChildNoteID) {
712                                // link parent and child note with each other
713                                *itChildNoteID = newNoteID;
714                                itNewNote->parentNoteID = parentNoteID;
715                                itNewNote->hostKey = itParentNote->hostKey;
716                            } else {    
717                                dmsg(1,("Engine: Could not assign new note as child note; Note ID pool empty!\n"));
718                                pNotePool->free(itNewNote);
719                                return 0; // error
720                            }
721                        } else {
722                            // the parent note was apparently released already, so
723                            // free the new note again and inform caller that it
724                            // should drop the event
725                            dmsg(3,("Engine: Could not assign new note as child note; Parent note is gone!\n"));
726                            pNotePool->free(itNewNote);
727                            return 0; // error
728                        }
729                    }
730    
731                    dmsg(2,("Launched new note on host key %d\n", itNewNote->hostKey));
732    
733                    // copy event which caused this note
734                    itNewNote->cause = *itNoteOnEvent;
735                    itNewNote->eventID = pEventPool->getID(itNoteOnEvent);
736                    if (!itNewNote->eventID) {
737                        dmsg(0,("Engine: No valid event ID resolved for note. This is a bug!!!\n"));
738                    }
739    
740                    // move new note to its host key
741                    MidiKey* pKey = &pChannel->pMIDIKeyInfo[itNewNote->hostKey];
742                    itNewNote.moveToEndOf(pKey->pActiveNotes);
743    
744                    // assign unique note ID of this new note to the original note on event
745                    itNoteOnEvent->Param.Note.ID = newNoteID;
746    
747                    return newNoteID; // success
748                }
749    
750              /**              /**
751               * Dispatch and handle all events in this audio fragment for the given               * Dispatch and handle all events in this audio fragment for the given
752               * engine channel.               * engine channel.
# Line 631  namespace LinuxSampler { Line 762  namespace LinuxSampler {
762                  AbstractEngineChannel* pChannel = static_cast<AbstractEngineChannel*>(pEngineChannel);                  AbstractEngineChannel* pChannel = static_cast<AbstractEngineChannel*>(pEngineChannel);
763                  pChannel->ImportEvents(Samples);                  pChannel->ImportEvents(Samples);
764    
765                  // process events                  // if a valid real-time instrument script is loaded, pre-process
766                    // the event list by running the script now, since the script
767                    // might filter events or add new ones for this cycle
768                    if (pChannel->pScript) {
769                        const sched_time_t fragmentEndTime = pEventGenerator->schedTimeAtCurrentFragmentEnd();
770    
771                        // resume suspended script executions been scheduled for
772                        // this audio fragment cycle (which were suspended in a
773                        // previous audio fragment cycle)
774                        ProcessSuspendedScriptEvents(pChannel, fragmentEndTime);
775    
776                        // spawn new script executions for the new MIDI events of
777                        // this audio fragment cycle
778                        //
779                        // FIXME: it would probably be better to just schedule newly spawned script executions here and then execute them altogether with already suspended ones all at once in order of all their scheduled timing
780                        for (RTList<Event>::Iterator itEvent = pChannel->pEvents->first(),
781                            end = pChannel->pEvents->end(); itEvent != end; )
782                        {
783                            //HACK: avoids iterator invalidation which might happen below since an instrument script might drop an event by direct raw pointer access (it would be considerable to extend the Iterator class to detect and circumvent this case by checking the "reincarnation" member variable).
784                            RTList<Event>::Iterator itNext = itEvent;
785                            ++itNext;
786    
787                            switch (itEvent->Type) {
788                                case Event::type_note_on:
789                                    if (pChannel->pScript->handlerNote)
790                                        ProcessEventByScript(pChannel, itEvent, pChannel->pScript->handlerNote);
791                                    break;
792                                case Event::type_note_off:
793                                    if (pChannel->pScript->handlerRelease)
794                                        ProcessEventByScript(pChannel, itEvent, pChannel->pScript->handlerRelease);
795                                    break;
796                                case Event::type_control_change:
797                                case Event::type_channel_pressure:
798                                case Event::type_pitchbend:
799                                    if (pChannel->pScript->handlerController)
800                                        ProcessEventByScript(pChannel, itEvent, pChannel->pScript->handlerController);                            
801                                    break;
802                                case Event::type_note_pressure:
803                                    //TODO: ...
804                                    break;
805    
806                                case Event::type_sysex:
807                                    //TODO: ...
808                                    break;
809    
810                                case Event::type_cancel_release_key:
811                                case Event::type_release_key:
812                                case Event::type_release_note:
813                                case Event::type_play_note:
814                                case Event::type_stop_note:
815                                case Event::type_kill_note:
816                                case Event::type_note_synth_param:
817                                    break; // noop
818                            }
819    
820                            // see HACK comment above
821                            itEvent = itNext;
822                        }
823    
824                        // this has to be run again, since the newly spawned scripts
825                        // above may have cause suspended scripts that must be
826                        // resumed within this same audio fragment cycle
827                        //
828                        // FIXME: see FIXME comment above
829                        ProcessSuspendedScriptEvents(pChannel, fragmentEndTime);
830                    }
831    
832                    // if there are any delayed events scheduled for the current
833                    // audio fragment cycle, then move and sort them into the main
834                    // event list
835                    if (!pChannel->delayedEvents.queue.isEmpty()) {
836                        dmsg(5,("Engine: There are delayed MIDI events (total queue size: %d) ...\n", pChannel->delayedEvents.queue.size()));
837                        const sched_time_t fragmentEndTime = pEventGenerator->schedTimeAtCurrentFragmentEnd();
838                        RTList<Event>::Iterator itEvent = pChannel->pEvents->first();
839                        while (true) {
840                            RTList<ScheduledEvent>::Iterator itDelayedEventNode =
841                                pEventGenerator->popNextScheduledEvent(
842                                    pChannel->delayedEvents.queue,
843                                    pChannel->delayedEvents.schedulerNodes,
844                                    fragmentEndTime
845                                );
846                            if (!itDelayedEventNode) break;
847                            // get the actual delayed event object and free the used scheduler node
848                            RTList<Event>::Iterator itDelayedEvent = itDelayedEventNode->itEvent;
849                            pChannel->delayedEvents.schedulerNodes.free(itDelayedEventNode);
850                            if (!itDelayedEvent) { // should never happen, but just to be sure ...
851                                dmsg(1,("Engine: Oops, invalid delayed event!\n"));
852                                continue;
853                            }
854                            // skip all events on main event list which have a time
855                            // before (or equal to) the delayed event to be inserted
856                            for (; itEvent && itEvent->FragmentPos() <= itDelayedEvent->FragmentPos();
857                                 ++itEvent);
858                            // now move delayed event from delayedEvents.pList to
859                            // the current position on the main event list
860                            itEvent = itDelayedEvent.moveBefore(itEvent);
861                            dmsg(5,("Engine: Inserted event of type %d into main event list (queue size: %d).\n", itEvent->Type, pChannel->delayedEvents.queue.size()));
862                        }
863                        dmsg(5,("Engine: End of delayed events (total queue size: %d).\n", pChannel->delayedEvents.queue.size()));
864                    }
865    
866                    // now process all events regularly
867                  {                  {
868                      RTList<Event>::Iterator itEvent = pChannel->pEvents->first();                      RTList<Event>::Iterator itEvent = pChannel->pEvents->first();
869                      RTList<Event>::Iterator end     = pChannel->pEvents->end();                      RTList<Event>::Iterator end     = pChannel->pEvents->end();
# Line 641  namespace LinuxSampler { Line 873  namespace LinuxSampler {
873                                  dmsg(5,("Engine: Note on received\n"));                                  dmsg(5,("Engine: Note on received\n"));
874                                  ProcessNoteOn((EngineChannel*)itEvent->pEngineChannel, itEvent);                                  ProcessNoteOn((EngineChannel*)itEvent->pEngineChannel, itEvent);
875                                  break;                                  break;
876                                case Event::type_play_note:
877                                    dmsg(5,("Engine: Play Note received\n"));
878                                    ProcessNoteOn((EngineChannel*)itEvent->pEngineChannel, itEvent);
879                                    break;
880                              case Event::type_note_off:                              case Event::type_note_off:
881                                  dmsg(5,("Engine: Note off received\n"));                                  dmsg(5,("Engine: Note off received\n"));
882                                  ProcessNoteOff((EngineChannel*)itEvent->pEngineChannel, itEvent);                                  ProcessNoteOff((EngineChannel*)itEvent->pEngineChannel, itEvent);
883                                  break;                                  break;
884                                case Event::type_stop_note:
885                                    dmsg(5,("Engine: Stop Note received\n"));
886                                    ProcessNoteOff((EngineChannel*)itEvent->pEngineChannel, itEvent);
887                                    break;
888                                case Event::type_kill_note:
889                                    dmsg(5,("Engine: Kill Note received\n"));
890                                    ProcessKillNote((EngineChannel*)itEvent->pEngineChannel, itEvent);
891                                    break;
892                              case Event::type_control_change:                              case Event::type_control_change:
893                                  dmsg(5,("Engine: MIDI CC received\n"));                                  dmsg(5,("Engine: MIDI CC received\n"));
894                                  ProcessControlChange((EngineChannel*)itEvent->pEngineChannel, itEvent);                                  ProcessControlChange((EngineChannel*)itEvent->pEngineChannel, itEvent);
# Line 661  namespace LinuxSampler { Line 905  namespace LinuxSampler {
905                                  dmsg(5,("Engine: Pitchbend received\n"));                                  dmsg(5,("Engine: Pitchbend received\n"));
906                                  ProcessPitchbend(static_cast<AbstractEngineChannel*>(itEvent->pEngineChannel), itEvent);                                  ProcessPitchbend(static_cast<AbstractEngineChannel*>(itEvent->pEngineChannel), itEvent);
907                                  break;                                  break;
908                                case Event::type_note_synth_param:
909                                    dmsg(5,("Engine: Note Synth Param received\n"));
910                                    ProcessNoteSynthParam(itEvent->pEngineChannel, itEvent);
911                                    break;
912                                case Event::type_sysex:
913                                    break; // TODO ...
914    
915                                case Event::type_cancel_release_key:
916                                case Event::type_release_key:
917                                case Event::type_release_note:
918                                    break; // noop
919                          }                          }
920                      }                      }
921                  }                  }
# Line 668  namespace LinuxSampler { Line 923  namespace LinuxSampler {
923                  // reset voice stealing for the next engine channel (or next audio fragment)                  // reset voice stealing for the next engine channel (or next audio fragment)
924                  itLastStolenVoice         = VoiceIterator();                  itLastStolenVoice         = VoiceIterator();
925                  itLastStolenVoiceGlobally = VoiceIterator();                  itLastStolenVoiceGlobally = VoiceIterator();
926                    itLastStolenNote          = NoteIterator();
927                    itLastStolenNoteGlobally  = NoteIterator();
928                  iuiLastStolenKey          = RTList<uint>::Iterator();                  iuiLastStolenKey          = RTList<uint>::Iterator();
929                  iuiLastStolenKeyGlobally  = RTList<uint>::Iterator();                  iuiLastStolenKeyGlobally  = RTList<uint>::Iterator();
930                  pLastStolenChannel        = NULL;                  pLastStolenChannel        = NULL;
931              }              }
932    
933              /**              /**
934                 * Run all suspended script execution instances which are scheduled
935                 * to be resumed for the current audio fragment cycle.
936                 *
937                 * @param pChannel - engine channel on which suspended events occurred
938                 */
939                void ProcessSuspendedScriptEvents(AbstractEngineChannel* pChannel, const sched_time_t fragmentEndTime) {
940                    while (true) {
941                        RTList<ScriptEvent>::Iterator itEvent =
942                            pEventGenerator->popNextScheduledScriptEvent(
943                                pChannel->pScript->suspendedEvents,
944                                *pChannel->pScript->pEvents, fragmentEndTime
945                            );
946                        if (!itEvent) break;
947                        ResumeScriptEvent(pChannel, itEvent);
948                    }
949                }
950    
951                /** @brief Call instrument script's event handler for this event.
952                 *
953                 * Causes a new execution instance of the currently loaded real-time
954                 * instrument script's event handler (callback) to be spawned for
955                 * the given MIDI event.
956                 *
957                 * @param pChannel - engine channel on which the MIDI event occurred
958                 * @param itEvent - MIDI event that causes this new script execution
959                 * @param pEventHandler - script's event handler to be executed
960                 */
961                void ProcessEventByScript(AbstractEngineChannel* pChannel, RTList<Event>::Iterator& itEvent, VMEventHandler* pEventHandler) {
962                    const int key = itEvent->Param.Note.Key; // even if this is not a note on/off event, accessing it does not mean any harm
963                    // check if polyphonic data is passed from "note" to "release"
964                    // script event handlers
965                    if (pEventHandler == pChannel->pScript->handlerRelease &&
966                        pChannel->pScript->handlerNote &&
967                        pChannel->pScript->handlerNote->isPolyphonic() &&
968                        pChannel->pScript->handlerRelease->isPolyphonic() &&
969                        !pChannel->pScript->pKeyEvents[key]->isEmpty())
970                    {
971                        // polyphonic variable data is used/passed from "note" to
972                        // "release" script callback, so we have to recycle the
973                        // original "note on" script event(s)
974                        RTList<ScriptEvent>::Iterator it  = pChannel->pScript->pKeyEvents[key]->first();
975                        RTList<ScriptEvent>::Iterator end = pChannel->pScript->pKeyEvents[key]->end();
976                        for (; it != end; ++it) {
977                            ProcessScriptEvent(
978                                pChannel, itEvent, pEventHandler, it
979                            );
980                        }
981                    } else {
982                        // no polyphonic data is used/passed from "note" to
983                        // "release" script callback, so just use a new fresh
984                        // script event object
985                        RTList<ScriptEvent>::Iterator itScriptEvent =
986                            pChannel->pScript->pEvents->allocAppend();
987                        ProcessScriptEvent(
988                            pChannel, itEvent, pEventHandler, itScriptEvent
989                        );
990                    }
991                }
992    
993                /** @brief Spawn new execution instance of an instrument script handler.
994                 *
995                 * Will be called to initiate a new execution of a real-time
996                 * instrument script event right from the start of the script's
997                 * respective handler. If script execution did not complete after
998                 * calling this method, the respective script exeuction is then
999                 * suspended and a call to ResumeScriptEvent() will be used next
1000                 * time to continue its execution.
1001                 *
1002                 * @param pChannel - engine channel this script is running for
1003                 * @param itEvent - event which caused execution of this script
1004                 *                  event handler
1005                 * @param pEventHandler - VM representation of event handler to be
1006                 *                        executed
1007                 * @param itScriptEvent - script event that shall be processed
1008                 */
1009                void ProcessScriptEvent(AbstractEngineChannel* pChannel, RTList<Event>::Iterator& itEvent, VMEventHandler* pEventHandler, RTList<ScriptEvent>::Iterator& itScriptEvent) {
1010                    if (!itScriptEvent) return; // not a valid script event (i.e. because no free script event was left in the script event pool)
1011    
1012                    // fill the list of script handlers to be executed by this event
1013                    int i = 0;
1014                    itScriptEvent->handlers[i++] = pEventHandler; // actual event handler (i.e. note, controller)
1015                    itScriptEvent->handlers[i] = NULL; // NULL termination of list
1016    
1017                    // initialize/reset other members
1018                    itScriptEvent->cause = *itEvent;
1019                    itScriptEvent->scheduleTime = itEvent->SchedTime();
1020                    itScriptEvent->currentHandler = 0;
1021                    itScriptEvent->executionSlices = 0;
1022                    itScriptEvent->ignoreAllWaitCalls = false;
1023                    itScriptEvent->handlerType = pEventHandler->eventHandlerType();
1024                    // this is the native representation of the $EVENT_ID script variable
1025                    itScriptEvent->id =
1026                        (itEvent->Type == Event::type_note_on)
1027                            ? ScriptID::fromNoteID( itEvent->Param.Note.ID )
1028                            : ScriptID::fromEventID( pEventPool->getID(itEvent) );
1029    
1030                    // run script handler(s)
1031                    VMExecStatus_t res = pScriptVM->exec(
1032                        pChannel->pScript->parserContext, &*itScriptEvent
1033                    );
1034    
1035                    // was the script suspended?
1036                    if (res & VM_EXEC_SUSPENDED) { // script was suspended ...
1037                        // in case the script was suspended, keep it on the allocated
1038                        // ScriptEvent list to be resume at the scheduled time in future,
1039                        // additionally insert it into a sorted time queue
1040                        pEventGenerator->scheduleAheadMicroSec(
1041                            pChannel->pScript->suspendedEvents, // scheduler queue
1042                            *itScriptEvent, // script event
1043                            itScriptEvent->cause.FragmentPos(), // current time of script event (basis for its next execution)
1044                            itScriptEvent->execCtx->suspensionTimeMicroseconds() // how long shall it be suspended
1045                        );
1046                    } else { // script execution has finished without 'suspended' status ...
1047                        // if "polyphonic" variable data is passed from script's
1048                        // "note" event handler to its "release" event handler, then
1049                        // the script event must be kept and recycled for the later
1050                        // occuring "release" script event ...
1051                        if (pEventHandler == pChannel->pScript->handlerNote &&
1052                            pChannel->pScript->handlerRelease &&
1053                            pChannel->pScript->handlerNote->isPolyphonic() &&
1054                            pChannel->pScript->handlerRelease->isPolyphonic())
1055                        {
1056                            const int key = itEvent->Param.Note.Key;
1057                            itScriptEvent.moveToEndOf(pChannel->pScript->pKeyEvents[key & 127]);
1058                        } else {
1059                            // ... otherwise if no polyphonic data is passed and
1060                            // script's execution has finished without suspension
1061                            // status, then free the script event for a new future
1062                            // script event to be triggered from start
1063                            pChannel->pScript->pEvents->free(itScriptEvent);
1064                        }
1065                    }
1066                }
1067    
1068                /** @brief Resume execution of instrument script.
1069                 *
1070                 * Will be called to resume execution of a real-time instrument
1071                 * script event which has been suspended previously.
1072                 *
1073                 * Script execution might be suspended for various reasons. Usually
1074                 * a script will be suspended if the script called the built-in
1075                 * "wait()" function, but it might also be suspended automatically
1076                 * if the script took too much execution time in an audio fragment
1077                 * cycle. So in the latter case automatic suspension is performed in
1078                 * order to avoid harm for the sampler's overall real-time
1079                 * requirements.
1080                 *
1081                 * @param pChannel - engine channel this script is running for
1082                 * @param itScriptEvent - script execution that shall be resumed
1083                 */
1084                void ResumeScriptEvent(AbstractEngineChannel* pChannel, RTList<ScriptEvent>::Iterator& itScriptEvent) {
1085                    VMEventHandler* handler = itScriptEvent->handlers[itScriptEvent->currentHandler];
1086    
1087                    // run script
1088                    VMExecStatus_t res = pScriptVM->exec(
1089                        pChannel->pScript->parserContext, &*itScriptEvent
1090                    );
1091    
1092                    // was the script suspended?
1093                    if (res & VM_EXEC_SUSPENDED) {
1094                        // in case the script was suspended, keep it on the allocated
1095                        // ScriptEvent list to be resume at the scheduled time in future,
1096                        // additionally insert it into a sorted time queue
1097                        pEventGenerator->scheduleAheadMicroSec(
1098                            pChannel->pScript->suspendedEvents, // scheduler queue
1099                            *itScriptEvent, // script event
1100                            itScriptEvent->cause.FragmentPos(), // current time of script event (basis for its next execution)
1101                            itScriptEvent->execCtx->suspensionTimeMicroseconds() // how long shall it be suspended
1102                        );
1103                    } else { // script execution has finished without 'suspended' status ...
1104                        // if "polyphonic" variable data is passed from script's
1105                        // "note" event handler to its "release" event handler, then
1106                        // the script event must be kept and recycled for the later
1107                        // occuring "release" script event ...
1108                        if (handler && handler == pChannel->pScript->handlerNote &&
1109                            pChannel->pScript->handlerRelease &&
1110                            pChannel->pScript->handlerNote->isPolyphonic() &&
1111                            pChannel->pScript->handlerRelease->isPolyphonic())
1112                        {
1113                            const int key = itScriptEvent->cause.Param.Note.Key;
1114                            itScriptEvent.moveToEndOf(pChannel->pScript->pKeyEvents[key & 127]);
1115                        } else {
1116                            // ... otherwise if no polyphonic data is passed and
1117                            // script's execution has finished without suspension
1118                            // status, then free the script event for a new future
1119                            // script event to be triggered from start
1120                            pChannel->pScript->pEvents->free(itScriptEvent);
1121                        }
1122                    }
1123                }
1124    
1125                /**
1126               *  Will be called by LaunchVoice() method in case there are no free               *  Will be called by LaunchVoice() method in case there are no free
1127               *  voices left. This method will select and kill one old voice for               *  voices left. This method will select and kill one old voice for
1128               *  voice stealing and postpone the note-on event until the selected               *  voice stealing and postpone the note-on event until the selected
1129               *  voice actually died.               *  voice actually died.
1130               *               *
1131               *  @param pEngineChannel - engine channel on which this event occured on               *  @param pEngineChannel - engine channel on which this event occurred on
1132               *  @param itNoteOnEvent - key, velocity and time stamp of the event               *  @param itNoteOnEvent - key, velocity and time stamp of the event
1133               *  @returns 0 on success, a value < 0 if no active voice could be picked for voice stealing               *  @returns 0 on success, a value < 0 if no active voice could be picked for voice stealing
1134               */               */
1135              int  StealVoice(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent) {              int StealVoice(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent) {
1136                  if (VoiceSpawnsLeft <= 0) {                  if (VoiceSpawnsLeft <= 0) {
1137                      dmsg(1,("Max. voice thefts per audio fragment reached (you may raise CONFIG_MAX_VOICES).\n"));                      dmsg(1,("Max. voice thefts per audio fragment reached (you may raise CONFIG_MAX_VOICES).\n"));
1138                      return -1;                      return -1;
# Line 691  namespace LinuxSampler { Line 1140  namespace LinuxSampler {
1140    
1141                  EngineChannelBase<V, R, I>* pEngineChn = static_cast<EngineChannelBase<V, R, I>*>(pEngineChannel);                  EngineChannelBase<V, R, I>* pEngineChn = static_cast<EngineChannelBase<V, R, I>*>(pEngineChannel);
1142    
1143                  if (!pEventPool->poolIsEmpty()) {                  if (pEventPool->poolIsEmpty()) {
1144                        dmsg(1,("Event pool emtpy!\n"));
1145                        return -1;
1146                    }
1147    
1148                      if(!pEngineChn->StealVoice(itNoteOnEvent, &itLastStolenVoice, &iuiLastStolenKey)) {                  if (!pEngineChn->StealVoice(itNoteOnEvent, &itLastStolenVoice, &itLastStolenNote, &iuiLastStolenKey)) {
1149                          --VoiceSpawnsLeft;                      --VoiceSpawnsLeft;
1150                          return 0;                      return 0;
1151                      }                  }
1152    
1153                      // if we couldn't steal a voice from the same engine channel then                  // if we couldn't steal a voice from the same engine channel then
1154                      // steal oldest voice on the oldest key from any other engine channel                  // steal oldest voice on the oldest key from any other engine channel
1155                      // (the smaller engine channel number, the higher priority)                  // (the smaller engine channel number, the higher priority)
1156                      EngineChannelBase<V, R, I>*  pSelectedChannel;                  EngineChannelBase<V, R, I>*  pSelectedChannel;
1157                      int                       iChannelIndex;                  int                          iChannelIndex;
1158                      VoiceIterator             itSelectedVoice;                  VoiceIterator                itSelectedVoice;
1159    
1160                      // select engine channel                  // select engine channel
1161                      if (pLastStolenChannel) {                  if (pLastStolenChannel) {
1162                          pSelectedChannel = pLastStolenChannel;                      pSelectedChannel = pLastStolenChannel;
1163                          iChannelIndex    = pSelectedChannel->iEngineIndexSelf;                      iChannelIndex    = pSelectedChannel->iEngineIndexSelf;
1164                      } else { // pick the engine channel followed by this engine channel                  } else { // pick the engine channel followed by this engine channel
1165                          iChannelIndex    = (pEngineChn->iEngineIndexSelf + 1) % engineChannels.size();                      iChannelIndex    = (pEngineChn->iEngineIndexSelf + 1) % engineChannels.size();
1166                          pSelectedChannel = static_cast<EngineChannelBase<V, R, I>*>(engineChannels[iChannelIndex]);                      pSelectedChannel = static_cast<EngineChannelBase<V, R, I>*>(engineChannels[iChannelIndex]);
1167                      }                  }
1168    
1169                      // if we already stole in this fragment, try to proceed on same key                  // if we already stole in this fragment, try to proceed on same note
1170                      if (this->itLastStolenVoiceGlobally) {                  if (this->itLastStolenVoiceGlobally) {
1171                          itSelectedVoice = this->itLastStolenVoiceGlobally;                      itSelectedVoice = this->itLastStolenVoiceGlobally;
1172                          do {                      do {
1173                              ++itSelectedVoice;                          ++itSelectedVoice;
1174                          } while (itSelectedVoice && !itSelectedVoice->IsStealable()); // proceed iterating if voice was created in this fragment cycle                      } while (itSelectedVoice && !itSelectedVoice->IsStealable()); // proceed iterating if voice was created in this fragment cycle
1175                    }
1176                    // did we find a 'stealable' voice?
1177                    if (itSelectedVoice && itSelectedVoice->IsStealable()) {
1178                        // remember which voice we stole, so we can simply proceed on next voice stealing
1179                        this->itLastStolenVoiceGlobally = itSelectedVoice;
1180                        // done
1181                        goto stealable_voice_found;
1182                    }
1183    
1184                    // get (next) oldest note
1185                    if (this->itLastStolenNoteGlobally) {
1186                        for (NoteIterator itNote = ++this->itLastStolenNoteGlobally;
1187                             itNote; ++itNote)
1188                        {
1189                            for (itSelectedVoice = itNote->pActiveVoices->first(); itSelectedVoice; ++itSelectedVoice) {
1190                                // proceed iterating if voice was created in this audio fragment cycle
1191                                if (itSelectedVoice->IsStealable()) {
1192                                    // remember which voice of which note we stole, so we can simply proceed on next voice stealing
1193                                    this->itLastStolenNoteGlobally  = itNote;
1194                                    this->itLastStolenVoiceGlobally = itSelectedVoice;
1195                                    goto stealable_voice_found; // selection succeeded
1196                                }
1197                            }
1198                      }                      }
1199                    }
1200    
1201                      #if CONFIG_DEVMODE                  #if CONFIG_DEVMODE
1202                      EngineChannel* pBegin = pSelectedChannel; // to detect endless loop                  EngineChannel* pBegin = pSelectedChannel; // to detect endless loop
1203                      #endif // CONFIG_DEVMODE                  #endif // CONFIG_DEVMODE
1204    
1205                      // did we find a 'stealable' voice?                  while (true) { // iterate through engine channels                        
1206                      if (itSelectedVoice && itSelectedVoice->IsStealable()) {                      // get (next) oldest key
1207                          // remember which voice we stole, so we can simply proceed on next voice stealing                      RTList<uint>::Iterator iuiSelectedKey = (this->iuiLastStolenKeyGlobally) ? ++this->iuiLastStolenKeyGlobally : pSelectedChannel->pActiveKeys->first();
1208                          this->itLastStolenVoiceGlobally = itSelectedVoice;                      this->iuiLastStolenKeyGlobally = RTList<uint>::Iterator(); // to prevent endless loop (see line above)
1209                      } else while (true) { // iterate through engine channels                      while (iuiSelectedKey) {
1210                          // get (next) oldest key                          MidiKey* pSelectedKey = &pSelectedChannel->pMIDIKeyInfo[*iuiSelectedKey];
1211                          RTList<uint>::Iterator iuiSelectedKey = (this->iuiLastStolenKeyGlobally) ? ++this->iuiLastStolenKeyGlobally : pSelectedChannel->pActiveKeys->first();  
1212                          this->iuiLastStolenKeyGlobally = RTList<uint>::Iterator(); // to prevent endless loop (see line above)                          for (NoteIterator itNote = pSelectedKey->pActiveNotes->first(),
1213                          while (iuiSelectedKey) {                               itNotesEnd = pSelectedKey->pActiveNotes->end();
1214                              MidiKey* pSelectedKey = &pSelectedChannel->pMIDIKeyInfo[*iuiSelectedKey];                               itNote != itNotesEnd; ++itNote)
1215                              itSelectedVoice = pSelectedKey->pActiveVoices->first();                          {
1216                                itSelectedVoice = itNote->pActiveVoices->first();
1217                              // proceed iterating if voice was created in this fragment cycle                              // proceed iterating if voice was created in this fragment cycle
1218                              while (itSelectedVoice && !itSelectedVoice->IsStealable()) ++itSelectedVoice;                              while (itSelectedVoice && !itSelectedVoice->IsStealable()) ++itSelectedVoice;
1219                              // found a "stealable" voice ?                              // found a "stealable" voice ?
1220                              if (itSelectedVoice && itSelectedVoice->IsStealable()) {                              if (itSelectedVoice && itSelectedVoice->IsStealable()) {
1221                                  // remember which voice on which key on which engine channel we stole, so we can simply proceed on next voice stealing                                  // remember which voice of which note on which key on which engine channel we stole, so we can simply proceed on next voice stealing
1222                                  this->iuiLastStolenKeyGlobally  = iuiSelectedKey;                                  this->iuiLastStolenKeyGlobally  = iuiSelectedKey;
1223                                    this->itLastStolenNoteGlobally  = itNote;
1224                                  this->itLastStolenVoiceGlobally = itSelectedVoice;                                  this->itLastStolenVoiceGlobally = itSelectedVoice;
1225                                  this->pLastStolenChannel        = pSelectedChannel;                                  this->pLastStolenChannel        = pSelectedChannel;
1226                                  goto stealable_voice_found; // selection succeeded                                  goto stealable_voice_found; // selection succeeded
1227                              }                              }
                             ++iuiSelectedKey; // get next key on current engine channel  
1228                          }                          }
1229                          // get next engine channel                          ++iuiSelectedKey; // get next key on current engine channel
                         iChannelIndex    = (iChannelIndex + 1) % engineChannels.size();  
                         pSelectedChannel = static_cast<EngineChannelBase<V, R, I>*>(engineChannels[iChannelIndex]);  
   
                         #if CONFIG_DEVMODE  
                         if (pSelectedChannel == pBegin) {  
                             dmsg(1,("FATAL ERROR: voice stealing endless loop!\n"));  
                             dmsg(1,("VoiceSpawnsLeft=%d.\n", VoiceSpawnsLeft));  
                             dmsg(1,("Exiting.\n"));  
                             exit(-1);  
                         }  
                         #endif // CONFIG_DEVMODE  
1230                      }                      }
1231                        // get next engine channel
1232                      // jump point if a 'stealable' voice was found                      iChannelIndex    = (iChannelIndex + 1) % engineChannels.size();
1233                      stealable_voice_found:                      pSelectedChannel = static_cast<EngineChannelBase<V, R, I>*>(engineChannels[iChannelIndex]);
1234    
1235                      #if CONFIG_DEVMODE                      #if CONFIG_DEVMODE
1236                      if (!itSelectedVoice->IsActive()) {                      if (pSelectedChannel == pBegin) {
1237                          dmsg(1,("EngineBase: ERROR, tried to steal a voice which was not active !!!\n"));                          dmsg(1,("FATAL ERROR: voice stealing endless loop!\n"));
1238                          return -1;                          dmsg(1,("VoiceSpawnsLeft=%d.\n", VoiceSpawnsLeft));
1239                            dmsg(1,("Exiting.\n"));
1240                            exit(-1);
1241                      }                      }
1242                      #endif // CONFIG_DEVMODE                      #endif // CONFIG_DEVMODE
1243                    }
1244    
1245                      // now kill the selected voice                  // jump point if a 'stealable' voice was found
1246                      itSelectedVoice->Kill(itNoteOnEvent);                  stealable_voice_found:
   
                     --VoiceSpawnsLeft;  
1247    
1248                      return 0; // success                  #if CONFIG_DEVMODE
1249                  }                  if (!itSelectedVoice->IsActive()) {
1250                  else {                      dmsg(1,("EngineBase: ERROR, tried to steal a voice which was not active !!!\n"));
                     dmsg(1,("Event pool emtpy!\n"));  
1251                      return -1;                      return -1;
1252                  }                  }
1253                    #endif // CONFIG_DEVMODE
1254    
1255                    // now kill the selected voice
1256                    itSelectedVoice->Kill(itNoteOnEvent);
1257    
1258                    --VoiceSpawnsLeft;
1259    
1260                    return 0; // success
1261              }              }
1262    
1263              void HandleInstrumentChanges() {              void HandleInstrumentChanges() {
# Line 805  namespace LinuxSampler { Line 1279  namespace LinuxSampler {
1279                          dmsg(5,("Engine: instrument change command received\n"));                          dmsg(5,("Engine: instrument change command received\n"));
1280                          cmd.bChangeInstrument = false;                          cmd.bChangeInstrument = false;
1281                          pEngineChannel->pInstrument = cmd.pInstrument;                          pEngineChannel->pInstrument = cmd.pInstrument;
1282                            pEngineChannel->pScript =
1283                                cmd.pScript->bHasValidScript ? cmd.pScript : NULL;
1284                          instrumentChanged = true;                          instrumentChanged = true;
1285    
1286                          pEngineChannel->MarkAllActiveVoicesAsOrphans();                          pEngineChannel->MarkAllActiveVoicesAsOrphans();
1287    
1288                            // the script's "init" event handler is only executed
1289                            // once (when the script is loaded or reloaded)
1290                            if (pEngineChannel->pScript && pEngineChannel->pScript->handlerInit) {
1291                                dmsg(5,("Engine: exec handlerInit %p\n", pEngineChannel->pScript->handlerInit));
1292                                RTList<ScriptEvent>::Iterator itScriptEvent =
1293                                    pEngineChannel->pScript->pEvents->allocAppend();
1294    
1295                                itScriptEvent->cause.pEngineChannel = pEngineChannel;
1296                                itScriptEvent->handlers[0] = pEngineChannel->pScript->handlerInit;
1297                                itScriptEvent->handlers[1] = NULL;
1298                                itScriptEvent->currentHandler = 0;
1299                                itScriptEvent->executionSlices = 0;
1300                                itScriptEvent->ignoreAllWaitCalls = false;
1301                                itScriptEvent->handlerType = VM_EVENT_HANDLER_INIT;
1302    
1303                                /*VMExecStatus_t res = */ pScriptVM->exec(
1304                                    pEngineChannel->pScript->parserContext, &*itScriptEvent
1305                                );
1306    
1307                                pEngineChannel->pScript->pEvents->free(itScriptEvent);
1308                            }
1309                      }                      }
1310                  }                  }
1311    
# Line 858  namespace LinuxSampler { Line 1356  namespace LinuxSampler {
1356                      EngineChannelBase<V, R, I>* pEngineChannel =                      EngineChannelBase<V, R, I>* pEngineChannel =
1357                          static_cast<EngineChannelBase<V, R, I>*>(itVoiceStealEvent->pEngineChannel);;                          static_cast<EngineChannelBase<V, R, I>*>(itVoiceStealEvent->pEngineChannel);;
1358                      if (!pEngineChannel->pInstrument) continue; // ignore if no instrument loaded                      if (!pEngineChannel->pInstrument) continue; // ignore if no instrument loaded
1359                        
1360                      PoolVoiceIterator itNewVoice =                      PoolVoiceIterator itNewVoice =
1361                          LaunchVoice(pEngineChannel, itVoiceStealEvent, itVoiceStealEvent->Param.Note.Layer, itVoiceStealEvent->Param.Note.ReleaseTrigger, false, false);                          LaunchVoice(pEngineChannel, itVoiceStealEvent, itVoiceStealEvent->Param.Note.Layer, itVoiceStealEvent->Param.Note.ReleaseTrigger, false, false);
1362                      if (itNewVoice) {                      if (itNewVoice) {
1363                            // usually there should already be a new Note object
1364                            NoteIterator itNote = GetNotePool()->fromID(itVoiceStealEvent->Param.Note.ID);
1365                            if (!itNote) { // should not happen, but just to be sure ...
1366                                const note_id_t noteID = LaunchNewNote(pEngineChannel, itVoiceStealEvent);
1367                                if (!noteID) {
1368                                    dmsg(1,("Engine: Voice stealing failed; No Note object and Note pool empty!\n"));
1369                                    continue;
1370                                }
1371                                itNote = GetNotePool()->fromID(noteID);
1372                            }
1373                            // move voice from whereever it was, to the new note's list of active voices
1374                            itNewVoice = itNewVoice.moveToEndOf(itNote->pActiveVoices);
1375                            // render audio of this new voice for the first time
1376                          itNewVoice->Render(Samples);                          itNewVoice->Render(Samples);
1377                          if (itNewVoice->IsActive()) { // still active                          if (itNewVoice->IsActive()) { // still active
1378                              *(pEngineChannel->pRegionsInUse->allocAppend()) = itNewVoice->GetRegion();                              *(pEngineChannel->pRegionsInUse->allocAppend()) = itNewVoice->GetRegion();
# Line 898  namespace LinuxSampler { Line 1410  namespace LinuxSampler {
1410                   pChannel->FreeAllInactiveKyes();                   pChannel->FreeAllInactiveKyes();
1411    
1412                  // empty the engine channel's own event lists                  // empty the engine channel's own event lists
1413                  pChannel->ClearEventLists();                  // (only events of the current audio fragment cycle)
1414                    pChannel->ClearEventListsOfCurrentFragment();
1415              }              }
1416    
1417              /**              /**
# Line 963  namespace LinuxSampler { Line 1476  namespace LinuxSampler {
1476                                  case 0x1d: { // reverb send of note (Roland GS NRPN)                                  case 0x1d: { // reverb send of note (Roland GS NRPN)
1477                                      const uint note = NrpnCtrlLSB;                                      const uint note = NrpnCtrlLSB;
1478                                      const float reverb = float(itControlChangeEvent->Param.CC.Value) / 127.0f;                                      const float reverb = float(itControlChangeEvent->Param.CC.Value) / 127.0f;
1479                                      dmsg(4,("Note Reverb Send NRPN received (note=%d,send=%d).\n", note, reverb));                                      dmsg(4,("Note Reverb Send NRPN received (note=%d,send=%f).\n", note, reverb));
1480                                      if (note < 128)                                      if (note < 128)
1481                                          pChannel->pMIDIKeyInfo[note].ReverbSend = reverb;                                          pChannel->pMIDIKeyInfo[note].ReverbSend = reverb;
1482                                      break;                                      break;
# Line 971  namespace LinuxSampler { Line 1484  namespace LinuxSampler {
1484                                  case 0x1e: { // chorus send of note (Roland GS NRPN)                                  case 0x1e: { // chorus send of note (Roland GS NRPN)
1485                                      const uint note = NrpnCtrlLSB;                                      const uint note = NrpnCtrlLSB;
1486                                      const float chorus = float(itControlChangeEvent->Param.CC.Value) / 127.0f;                                      const float chorus = float(itControlChangeEvent->Param.CC.Value) / 127.0f;
1487                                      dmsg(4,("Note Chorus Send NRPN received (note=%d,send=%d).\n", note, chorus));                                      dmsg(4,("Note Chorus Send NRPN received (note=%d,send=%f).\n", note, chorus));
1488                                      if (note < 128)                                      if (note < 128)
1489                                          pChannel->pMIDIKeyInfo[note].ChorusSend = chorus;                                          pChannel->pMIDIKeyInfo[note].ChorusSend = chorus;
1490                                      break;                                      break;
# Line 1124  namespace LinuxSampler { Line 1637  namespace LinuxSampler {
1637              /**              /**
1638               *  Assigns and triggers a new voice for the respective MIDI key.               *  Assigns and triggers a new voice for the respective MIDI key.
1639               *               *
1640               *  @param pEngineChannel - engine channel on which this event occured on               *  @param pEngineChannel - engine channel on which this event occurred on
1641               *  @param itNoteOnEvent - key, velocity and time stamp of the event               *  @param itNoteOnEvent - key, velocity and time stamp of the event
1642               */               */
1643              virtual void ProcessNoteOn(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent) {              virtual void ProcessNoteOn(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent) OVERRIDE {
1644                  EngineChannelBase<V, R, I>* pChannel =                  EngineChannelBase<V, R, I>* pChannel =
1645                          static_cast<EngineChannelBase<V, R, I>*>(pEngineChannel);                          static_cast<EngineChannelBase<V, R, I>*>(pEngineChannel);
1646    
                 //HACK: we should better add the transpose value only to the most mandatory places (like for retrieving the region and calculating the tuning), because otherwise voices will unintendedly survive when changing transpose while playing  
                 int k = itNoteOnEvent->Param.Note.Key + pChannel->GlobalTranspose;  
                 if (k < 0 || k > 127) return; //ignore keys outside the key range  
   
                 itNoteOnEvent->Param.Note.Key += pChannel->GlobalTranspose;  
                 int vel = itNoteOnEvent->Param.Note.Velocity;  
   
1647                  const int key = itNoteOnEvent->Param.Note.Key;                  const int key = itNoteOnEvent->Param.Note.Key;
1648                    const int vel = itNoteOnEvent->Param.Note.Velocity;
1649                    if (key < 0 || key > 127) return; // ignore event, key outside allowed key range
1650    
1651                  MidiKey* pKey = &pChannel->pMIDIKeyInfo[key];                  MidiKey* pKey = &pChannel->pMIDIKeyInfo[key];
1652    
1653                  pChannel->listeners.PreProcessNoteOn(key, vel);                  // There are real MIDI note-on events (Event::type_note_on) and
1654                    // programmatically spawned notes (Event::type_play_note). We have
1655                    // to distinguish between them, since certain processing below
1656                    // must only be done on real MIDI note-on events (i.e. for
1657                    // correctly updating which MIDI keys are currently pressed down).
1658                    const bool isRealMIDINoteOnEvent = itNoteOnEvent->Type == Event::type_note_on;
1659    
1660                    if (isRealMIDINoteOnEvent)
1661                        pChannel->listeners.PreProcessNoteOn(key, vel);
1662    
1663                  #if !CONFIG_PROCESS_MUTED_CHANNELS                  #if !CONFIG_PROCESS_MUTED_CHANNELS
1664                  if (pEngineChannel->GetMute()) { // skip if sampler channel is muted                  if (pEngineChannel->GetMute()) { // skip if sampler channel is muted
1665                      pChannel->listeners.PostProcessNoteOn(key, vel);                      if (isRealMIDINoteOnEvent)
1666                            pChannel->listeners.PostProcessNoteOn(key, vel);
1667                      return;                      return;
1668                  }                  }
1669                  #endif                  #endif
1670    
1671                  if (!pChannel->pInstrument) {                  if (!pChannel->pInstrument) {
1672                      pChannel->listeners.PostProcessNoteOn(key, vel);                      if (isRealMIDINoteOnEvent)
1673                            pChannel->listeners.PostProcessNoteOn(key, vel);
1674                      return; // ignore if no instrument loaded                      return; // ignore if no instrument loaded
1675                  }                  }
1676    
# Line 1158  namespace LinuxSampler { Line 1678  namespace LinuxSampler {
1678                  RTList<Event>::Iterator itNoteOnEventOnKeyList = itNoteOnEvent.moveToEndOf(pKey->pEvents);                  RTList<Event>::Iterator itNoteOnEventOnKeyList = itNoteOnEvent.moveToEndOf(pKey->pEvents);
1679    
1680                  // if Solo Mode then kill all already active voices                  // if Solo Mode then kill all already active voices
1681                  if (pChannel->SoloMode) {                  if (pChannel->SoloMode && isRealMIDINoteOnEvent) {
1682                      Pool<uint>::Iterator itYoungestKey = pChannel->pActiveKeys->last();                      Pool<uint>::Iterator itYoungestKey = pChannel->pActiveKeys->last();
1683                      if (itYoungestKey) {                      if (itYoungestKey) {
1684                          const int iYoungestKey = *itYoungestKey;                          const int iYoungestKey = *itYoungestKey;
# Line 1166  namespace LinuxSampler { Line 1686  namespace LinuxSampler {
1686                          if (pOtherKey->Active) {                          if (pOtherKey->Active) {
1687                              // get final portamento position of currently active voice                              // get final portamento position of currently active voice
1688                              if (pChannel->PortamentoMode) {                              if (pChannel->PortamentoMode) {
1689                                  VoiceIterator itVoice = pOtherKey->pActiveVoices->last();                                  NoteIterator itNote = pOtherKey->pActiveNotes->last();
1690                                  if (itVoice) itVoice->UpdatePortamentoPos(itNoteOnEventOnKeyList);                                  if (itNote) {
1691                                        VoiceIterator itVoice = itNote->pActiveVoices->last();
1692                                        if (itVoice) itVoice->UpdatePortamentoPos(itNoteOnEventOnKeyList);
1693                                    }
1694                              }                              }
1695                              // kill all voices on the (other) key                              // kill all voices on the (other) key
1696                              VoiceIterator itVoiceToBeKilled = pOtherKey->pActiveVoices->first();                              for (NoteIterator itNote = pOtherKey->pActiveNotes->first(); itNote; ++itNote) {
1697                              VoiceIterator end               = pOtherKey->pActiveVoices->end();                                  VoiceIterator itVoiceToBeKilled = itNote->pActiveVoices->first();
1698                              for (; itVoiceToBeKilled != end; ++itVoiceToBeKilled) {                                  VoiceIterator end               = itNote->pActiveVoices->end();
1699                                  if (!(itVoiceToBeKilled->Type & Voice::type_release_trigger))                                  for (; itVoiceToBeKilled != end; ++itVoiceToBeKilled) {
1700                                      itVoiceToBeKilled->Kill(itNoteOnEventOnKeyList);                                      if (!(itVoiceToBeKilled->Type & Voice::type_release_trigger))
1701                                            itVoiceToBeKilled->Kill(itNoteOnEventOnKeyList);
1702                                    }
1703                              }                              }
1704                          }                          }
1705                      }                      }
# Line 1182  namespace LinuxSampler { Line 1707  namespace LinuxSampler {
1707                      pChannel->SoloKey = key;                      pChannel->SoloKey = key;
1708                  }                  }
1709    
1710                  pChannel->ProcessKeySwitchChange(key);                  if (isRealMIDINoteOnEvent) {
1711                        pChannel->ProcessKeySwitchChange(key);
1712    
1713                  pKey->KeyPressed = true; // the MIDI key was now pressed down                      pKey->KeyPressed = true; // the MIDI key was now pressed down
1714                  pKey->Velocity   = itNoteOnEventOnKeyList->Param.Note.Velocity;                      pChannel->KeyDown[key] = true; // just used as built-in %KEY_DOWN script variable
1715                  pKey->NoteOnTime = FrameTime + itNoteOnEventOnKeyList->FragmentPos(); // will be used to calculate note length                      pKey->Velocity   = itNoteOnEventOnKeyList->Param.Note.Velocity;
1716                        pKey->NoteOnTime = FrameTime + itNoteOnEventOnKeyList->FragmentPos(); // will be used to calculate note length
1717                    }
1718    
1719                  // cancel release process of voices on this key if needed                  // cancel release process of voices on this key if needed
1720                  if (pKey->Active && !pChannel->SustainPedal) {                  if (pKey->Active && !pChannel->SustainPedal && isRealMIDINoteOnEvent) {
1721                      RTList<Event>::Iterator itCancelReleaseEvent = pKey->pEvents->allocAppend();                      RTList<Event>::Iterator itCancelReleaseEvent = pKey->pEvents->allocAppend();
1722                      if (itCancelReleaseEvent) {                      if (itCancelReleaseEvent) {
1723                          *itCancelReleaseEvent = *itNoteOnEventOnKeyList;         // copy event                          *itCancelReleaseEvent = *itNoteOnEventOnKeyList;         // copy event
1724                          itCancelReleaseEvent->Type = Event::type_cancel_release; // transform event type                          itCancelReleaseEvent->Type = Event::type_cancel_release_key; // transform event type
1725                      }                      }
1726                      else dmsg(1,("Event pool emtpy!\n"));                      else dmsg(1,("Event pool emtpy!\n"));
1727                  }                  }
# Line 1204  namespace LinuxSampler { Line 1732  namespace LinuxSampler {
1732                  if (!pKey->Active && !pKey->VoiceTheftsQueued)                  if (!pKey->Active && !pKey->VoiceTheftsQueued)
1733                      pKey->pEvents->free(itNoteOnEventOnKeyList);                      pKey->pEvents->free(itNoteOnEventOnKeyList);
1734    
1735                  if (!pChannel->SoloMode || pChannel->PortamentoPos < 0.0f) pChannel->PortamentoPos = (float) key;                  if (isRealMIDINoteOnEvent && (!pChannel->SoloMode || pChannel->PortamentoPos < 0.0f))
1736                        pChannel->PortamentoPos = (float) key;
1737    
1738                    //NOTE: Hmm, I guess its a matter of taste whether round robin should be advanced only on real MIDI note-on events, isn't it?
1739                  if (pKey->pRoundRobinIndex) {                  if (pKey->pRoundRobinIndex) {
1740                      (*pKey->pRoundRobinIndex)++; // counter specific for the key or region                      (*pKey->pRoundRobinIndex)++; // counter specific for the key or region
1741                      pChannel->RoundRobinIndex++; // common counter for the channel                      pChannel->RoundRobinIndex++; // common counter for the channel
1742                  }                  }
1743                  pChannel->listeners.PostProcessNoteOn(key, vel);  
1744                    if (isRealMIDINoteOnEvent)
1745                        pChannel->listeners.PostProcessNoteOn(key, vel);
1746              }              }
1747    
1748              /**              /**
# Line 1235  namespace LinuxSampler { Line 1768  namespace LinuxSampler {
1768               *  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.
1769               *  due to completion of sample playback).               *  due to completion of sample playback).
1770               *               *
1771               *  @param pEngineChannel - engine channel on which this event occured on               *  @param pEngineChannel - engine channel on which this event occurred on
1772               *  @param itNoteOffEvent - key, velocity and time stamp of the event               *  @param itNoteOffEvent - key, velocity and time stamp of the event
1773               */               */
1774              virtual void ProcessNoteOff(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOffEvent) {              virtual void ProcessNoteOff(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOffEvent) OVERRIDE {
1775                  EngineChannelBase<V, R, I>* pChannel = static_cast<EngineChannelBase<V, R, I>*>(pEngineChannel);                  EngineChannelBase<V, R, I>* pChannel = static_cast<EngineChannelBase<V, R, I>*>(pEngineChannel);
1776    
                 int k = itNoteOffEvent->Param.Note.Key + pChannel->GlobalTranspose;  
                 if (k < 0 || k > 127) return; //ignore keys outside the key range  
   
                 //HACK: we should better add the transpose value only to the most mandatory places (like for retrieving the region and calculating the tuning), because otherwise voices will unintendedly survive when changing transpose while playing  
                 itNoteOffEvent->Param.Note.Key += pChannel->GlobalTranspose;  
                 int vel = itNoteOffEvent->Param.Note.Velocity;  
   
1777                  const int iKey = itNoteOffEvent->Param.Note.Key;                  const int iKey = itNoteOffEvent->Param.Note.Key;
1778                    const int vel  = itNoteOffEvent->Param.Note.Velocity;
1779                    if (iKey < 0 || iKey > 127) return; // ignore event, key outside allowed key range
1780    
1781                  MidiKey* pKey = &pChannel->pMIDIKeyInfo[iKey];                  MidiKey* pKey = &pChannel->pMIDIKeyInfo[iKey];
1782    
1783                  pChannel->listeners.PreProcessNoteOff(iKey, vel);                  // There are real MIDI note-off events (Event::type_note_off) and
1784                    // programmatically spawned notes (Event::type_stop_note). We have
1785                    // to distinguish between them, since certain processing below
1786                    // must only be done on real MIDI note-off events (i.e. for
1787                    // correctly updating which MIDI keys are currently pressed down),
1788                    // plus a stop-note event just releases voices of one particular
1789                    // note, whereas a note-off event releases all voices on a
1790                    // particular MIDI key instead.
1791                    const bool isRealMIDINoteOffEvent = itNoteOffEvent->Type == Event::type_note_off;
1792    
1793                    if (isRealMIDINoteOffEvent)
1794                        pChannel->listeners.PreProcessNoteOff(iKey, vel);
1795    
1796                  #if !CONFIG_PROCESS_MUTED_CHANNELS                  #if !CONFIG_PROCESS_MUTED_CHANNELS
1797                  if (pEngineChannel->GetMute()) { // skip if sampler channel is muted                  if (pEngineChannel->GetMute()) { // skip if sampler channel is muted
1798                      pChannel->listeners.PostProcessNoteOff(iKey, vel);                      if (isRealMIDINoteOffEvent)
1799                            pChannel->listeners.PostProcessNoteOff(iKey, vel);
1800                      return;                      return;
1801                  }                  }
1802                  #endif                  #endif
1803    
1804                  pKey->KeyPressed = false; // the MIDI key was now released                  if (isRealMIDINoteOffEvent) {
1805                        pKey->KeyPressed = false; // the MIDI key was now released
1806                        pChannel->KeyDown[iKey] = false; // just used as built-in %KEY_DOWN script variable
1807                    }
1808    
1809                  // move event to the key's own event list                  // move event to the key's own event list
1810                  RTList<Event>::Iterator itNoteOffEventOnKeyList = itNoteOffEvent.moveToEndOf(pKey->pEvents);                  RTList<Event>::Iterator itNoteOffEventOnKeyList = itNoteOffEvent.moveToEndOf(pKey->pEvents);
1811    
1812                  bool bShouldRelease = pKey->Active && pChannel->ShouldReleaseVoice(itNoteOffEventOnKeyList->Param.Note.Key);                  if (isRealMIDINoteOffEvent) {
1813                        bool bShouldRelease = pKey->Active && pChannel->ShouldReleaseVoice(itNoteOffEventOnKeyList->Param.Note.Key);
1814    
1815                  // in case Solo Mode is enabled, kill all voices on this key and respawn a voice on the highest pressed key (if any)                      // in case Solo Mode is enabled, kill all voices on this key and respawn a voice on the highest pressed key (if any)
1816                  if (pChannel->SoloMode && pChannel->pInstrument) { //TODO: this feels like too much code just for handling solo mode :P                      if (pChannel->SoloMode && pChannel->pInstrument) { //TODO: this feels like too much code just for handling solo mode :P
1817                      bool bOtherKeysPressed = false;                          bool bOtherKeysPressed = false;
1818                      if (iKey == pChannel->SoloKey) {                          if (iKey == pChannel->SoloKey) {
1819                          pChannel->SoloKey = -1;                              pChannel->SoloKey = -1;
1820                          // if there's still a key pressed down, respawn a voice (group) on the highest key                              // if there's still a key pressed down, respawn a voice (group) on the highest key
1821                          for (int i = 127; i > 0; i--) {                              for (int i = 127; i > 0; i--) {
1822                              MidiKey* pOtherKey = &pChannel->pMIDIKeyInfo[i];                                  MidiKey* pOtherKey = &pChannel->pMIDIKeyInfo[i];
1823                              if (pOtherKey->KeyPressed) {                                  if (pOtherKey->KeyPressed) {
1824                                  bOtherKeysPressed = true;                                      bOtherKeysPressed = true;
1825                                  // make the other key the new 'currently active solo key'                                      // make the other key the new 'currently active solo key'
1826                                  pChannel->SoloKey = i;                                      pChannel->SoloKey = i;
1827                                  // get final portamento position of currently active voice                                      // get final portamento position of currently active voice
1828                                  if (pChannel->PortamentoMode) {                                      if (pChannel->PortamentoMode) {
1829                                      VoiceIterator itVoice = pKey->pActiveVoices->first();                                          NoteIterator itNote = pKey->pActiveNotes->first();
1830                                      if (itVoice) itVoice->UpdatePortamentoPos(itNoteOffEventOnKeyList);                                          VoiceIterator itVoice = itNote->pActiveVoices->first();
1831                                  }                                          if (itVoice) itVoice->UpdatePortamentoPos(itNoteOffEventOnKeyList);
1832                                  // create a pseudo note on event                                      }
1833                                  RTList<Event>::Iterator itPseudoNoteOnEvent = pOtherKey->pEvents->allocAppend();                                      // create a pseudo note on event
1834                                  if (itPseudoNoteOnEvent) {                                      RTList<Event>::Iterator itPseudoNoteOnEvent = pOtherKey->pEvents->allocAppend();
1835                                      // copy event                                      if (itPseudoNoteOnEvent) {
1836                                      *itPseudoNoteOnEvent = *itNoteOffEventOnKeyList;                                          // copy event
1837                                      // transform event to a note on event                                          *itPseudoNoteOnEvent = *itNoteOffEventOnKeyList;
1838                                      itPseudoNoteOnEvent->Type                = Event::type_note_on;                                          // transform event to a note on event
1839                                      itPseudoNoteOnEvent->Param.Note.Key      = i;                                          itPseudoNoteOnEvent->Type                = Event::type_note_on; //FIXME: should probably use Event::type_play_note instead (to avoid i.e. hanging notes)
1840                                      itPseudoNoteOnEvent->Param.Note.Velocity = pOtherKey->Velocity;                                          itPseudoNoteOnEvent->Param.Note.Key      = i;
1841                                      // allocate and trigger new voice(s) for the other key                                          itPseudoNoteOnEvent->Param.Note.Velocity = pOtherKey->Velocity;
1842                                      TriggerNewVoices(pChannel, itPseudoNoteOnEvent, false);                                          // assign a new note to this note-on event
1843                                      // if neither a voice was spawned or postponed then remove note on event from key again                                          if (LaunchNewNote(pChannel, itPseudoNoteOnEvent)) {
1844                                      if (!pOtherKey->Active && !pOtherKey->VoiceTheftsQueued)                                              // allocate and trigger new voice(s) for the other key
1845                                          pOtherKey->pEvents->free(itPseudoNoteOnEvent);                                              TriggerNewVoices(pChannel, itPseudoNoteOnEvent, false);
1846                                            }
1847                                            // if neither a voice was spawned or postponed then remove note on event from key again
1848                                            if (!pOtherKey->Active && !pOtherKey->VoiceTheftsQueued)
1849                                                pOtherKey->pEvents->free(itPseudoNoteOnEvent);
1850    
1851                                  } else dmsg(1,("Could not respawn voice, no free event left\n"));                                      } else dmsg(1,("Could not respawn voice, no free event left\n"));
1852                                  break; // done                                      break; // done
1853                                    }
1854                              }                              }
1855                          }                          }
1856                      }                          if (bOtherKeysPressed) {
1857                      if (bOtherKeysPressed) {                              if (pKey->Active) { // kill all voices on this key
1858                          if (pKey->Active) { // kill all voices on this key                                  bShouldRelease = false; // no need to release, as we kill it here
1859                              bShouldRelease = false; // no need to release, as we kill it here                                  for (NoteIterator itNote = pKey->pActiveNotes->first(); itNote; ++itNote) {
1860                              VoiceIterator itVoiceToBeKilled = pKey->pActiveVoices->first();                                      VoiceIterator itVoiceToBeKilled = itNote->pActiveVoices->first();
1861                              VoiceIterator end               = pKey->pActiveVoices->end();                                      VoiceIterator end               = itNote->pActiveVoices->end();
1862                              for (; itVoiceToBeKilled != end; ++itVoiceToBeKilled) {                                      for (; itVoiceToBeKilled != end; ++itVoiceToBeKilled) {
1863                                  if (!(itVoiceToBeKilled->Type & Voice::type_release_trigger))                                          if (!(itVoiceToBeKilled->Type & Voice::type_release_trigger))
1864                                      itVoiceToBeKilled->Kill(itNoteOffEventOnKeyList);                                              itVoiceToBeKilled->Kill(itNoteOffEventOnKeyList);
1865                                        }
1866                                    }
1867                              }                              }
1868                          }                          } else pChannel->PortamentoPos = -1.0f;
1869                      } else pChannel->PortamentoPos = -1.0f;                      }
                 }  
   
                 // if no solo mode (the usual case) or if solo mode and no other key pressed, then release voices on this key if needed  
                 if (bShouldRelease) {  
                     itNoteOffEventOnKeyList->Type = Event::type_release; // transform event type  
1870    
1871                      // spawn release triggered voice(s) if needed                      // if no solo mode (the usual case) or if solo mode and no other key pressed, then release voices on this key if needed
1872                      if (pKey->ReleaseTrigger && pChannel->pInstrument) {                      if (bShouldRelease) {
1873                          TriggerReleaseVoices(pChannel, itNoteOffEventOnKeyList);                          itNoteOffEventOnKeyList->Type = Event::type_release_key; // transform event type
1874                          pKey->ReleaseTrigger = false;                          // spawn release triggered voice(s) if needed
1875                            ProcessReleaseTrigger(pChannel, itNoteOffEventOnKeyList, pKey);
1876                        }
1877                    } else if (itNoteOffEventOnKeyList->Type == Event::type_stop_note) {
1878                        // This programmatically caused event is caused by a call to
1879                        // the built-in instrument script function note_off(). In
1880                        // contrast to a real MIDI note-off event the stop-note
1881                        // event just intends to release voices of one particular note.
1882                        NoteBase* pNote = pChannel->pEngine->NoteByID( itNoteOffEventOnKeyList->Param.Note.ID );
1883                        if (pNote) { // the requested note is still alive ...
1884                            itNoteOffEventOnKeyList->Type = Event::type_release_note; // transform event type
1885                        } else { // note is dead and gone ..
1886                            pKey->pEvents->free(itNoteOffEventOnKeyList); // remove stop-note event from key again
1887                            return; // prevent event to be removed a 2nd time below
1888                      }                      }
1889                  }                  }
1890    
# Line 1332  namespace LinuxSampler { Line 1892  namespace LinuxSampler {
1892                  if (!pKey->Active && !pKey->VoiceTheftsQueued)                  if (!pKey->Active && !pKey->VoiceTheftsQueued)
1893                      pKey->pEvents->free(itNoteOffEventOnKeyList);                      pKey->pEvents->free(itNoteOffEventOnKeyList);
1894    
1895                  pChannel->listeners.PostProcessNoteOff(iKey, vel);                  if (isRealMIDINoteOffEvent)
1896                        pChannel->listeners.PostProcessNoteOff(iKey, vel);
1897                }
1898    
1899                /**
1900                 * Called on sustain pedal up events to check and if required,
1901                 * launch release trigger voices on the respective active key.
1902                 *
1903                 * @param pEngineChannel - engine channel on which this event occurred on
1904                 * @param itEvent - release trigger event (contains note number)
1905                 */
1906                virtual void ProcessReleaseTrigger(EngineChannel* pEngineChannel, RTList<Event>::Iterator& itEvent) OVERRIDE {
1907                    EngineChannelBase<V, R, I>* pChannel = static_cast<EngineChannelBase<V, R, I>*>(pEngineChannel);
1908    
1909                    const int iKey = itEvent->Param.Note.Key;
1910                    if (iKey < 0 || iKey > 127) return; // ignore event, key outside allowed key range
1911    
1912                    MidiKey* pKey = &pChannel->pMIDIKeyInfo[iKey];
1913    
1914                    ProcessReleaseTrigger(pChannel, itEvent, pKey);
1915                }
1916    
1917                /**
1918                 * Called on note-off and sustain pedal up events to check and if
1919                 * required, launch release trigger voices on the respective active
1920                 * key.
1921                 *
1922                 * @param pEngineChannel - engine channel on which this event occurred on
1923                 * @param itEvent - note off event / release trigger event
1924                 * @param pKey - key on which the release trigger voices shall be spawned
1925                 */
1926                inline void ProcessReleaseTrigger(EngineChannelBase<V, R, I>* pChannel, RTList<Event>::Iterator& itEvent, MidiKey* pKey) {
1927                    // spawn release triggered voice(s) if needed
1928                    if (pKey->ReleaseTrigger && pChannel->pInstrument) {
1929                        // assign a new note to this release event
1930                        if (LaunchNewNote(pChannel, itEvent)) {
1931                            // allocate and trigger new release voice(s)
1932                            TriggerReleaseVoices(pChannel, itEvent);
1933                        }
1934                        pKey->ReleaseTrigger = false;
1935                    }
1936                }
1937    
1938                /**
1939                 * Called on "kill note" events, which currently only happens on
1940                 * built-in real-time instrument script function fade_out(). This
1941                 * method only fulfills one task: moving the even to the Note's own
1942                 * event list so that its voices can process the kill event sample
1943                 * accurately.
1944                 */
1945                void ProcessKillNote(EngineChannel* pEngineChannel, RTList<Event>::Iterator& itEvent) {
1946                    EngineChannelBase<V, R, I>* pChannel = static_cast<EngineChannelBase<V, R, I>*>(pEngineChannel);
1947    
1948                    NoteBase* pNote = pChannel->pEngine->NoteByID( itEvent->Param.Note.ID );
1949                    if (!pNote || pNote->hostKey < 0 || pNote->hostKey >= 128) return;
1950    
1951                    // move note kill event to its MIDI key
1952                    MidiKey* pKey = &pChannel->pMIDIKeyInfo[pNote->hostKey];
1953                    itEvent.moveToEndOf(pKey->pEvents);
1954                }
1955    
1956                /**
1957                 * Called on note synthesis parameter change events. These are
1958                 * internal events caused by calling built-in real-time instrument
1959                 * script functions like change_vol(), change_tune(), etc.
1960                 *
1961                 * This method performs two tasks:
1962                 *
1963                 * - It converts the event's relative values changes (Deltas) to
1964                 *   the respective final new synthesis parameter value (AbsValue),
1965                 *   for that particular moment of the event that is.
1966                 *
1967                 * - It moves the individual events to the Note's own event list
1968                 *   (or actually to the event list of the MIDI key), so that
1969                 *   voices can process those events sample accurately.
1970                 *
1971                 * @param pEngineChannel - engine channel on which this event occurred on
1972                 * @param itEvent - note synthesis parameter change event
1973                 */
1974                virtual void ProcessNoteSynthParam(EngineChannel* pEngineChannel, RTList<Event>::Iterator& itEvent) {
1975                    EngineChannelBase<V, R, I>* pChannel = static_cast<EngineChannelBase<V, R, I>*>(pEngineChannel);
1976    
1977                    NoteBase* pNote = pChannel->pEngine->NoteByID( itEvent->Param.NoteSynthParam.NoteID );
1978                    if (!pNote || pNote->hostKey < 0 || pNote->hostKey >= 128) return;
1979    
1980                    const bool& relative = itEvent->Param.NoteSynthParam.Relative;
1981    
1982                    switch (itEvent->Param.NoteSynthParam.Type) {
1983                        case Event::synth_param_volume:
1984                            if (relative)
1985                                pNote->Override.Volume *= itEvent->Param.NoteSynthParam.Delta;
1986                            else
1987                                pNote->Override.Volume = itEvent->Param.NoteSynthParam.Delta;
1988                            itEvent->Param.NoteSynthParam.AbsValue = pNote->Override.Volume;
1989                            break;
1990                        case Event::synth_param_volume_time:
1991                            pNote->Override.VolumeTime = itEvent->Param.NoteSynthParam.AbsValue = itEvent->Param.NoteSynthParam.Delta;
1992                            break;
1993                        case Event::synth_param_pitch:
1994                            if (relative)
1995                                pNote->Override.Pitch *= itEvent->Param.NoteSynthParam.Delta;
1996                            else
1997                                pNote->Override.Pitch = itEvent->Param.NoteSynthParam.Delta;
1998                            itEvent->Param.NoteSynthParam.AbsValue = pNote->Override.Pitch;
1999                            break;
2000                        case Event::synth_param_pitch_time:
2001                            pNote->Override.PitchTime = itEvent->Param.NoteSynthParam.AbsValue = itEvent->Param.NoteSynthParam.Delta;
2002                            break;
2003                        case Event::synth_param_pan:
2004                            if (relative) {
2005                                pNote->Override.Pan = RTMath::RelativeSummedAvg(pNote->Override.Pan, itEvent->Param.NoteSynthParam.Delta, ++pNote->Override.PanSources);
2006                            } else {
2007                                pNote->Override.Pan = itEvent->Param.NoteSynthParam.Delta;
2008                                pNote->Override.PanSources = 1; // only relevant on subsequent change_pan() instrument script calls on same note with 'relative' argument being set
2009                            }
2010                            itEvent->Param.NoteSynthParam.AbsValue = pNote->Override.Pan;
2011                            break;
2012                        case Event::synth_param_cutoff:
2013                            pNote->Override.Cutoff = itEvent->Param.NoteSynthParam.AbsValue = itEvent->Param.NoteSynthParam.Delta;
2014                            break;
2015                        case Event::synth_param_resonance:
2016                            pNote->Override.Resonance = itEvent->Param.NoteSynthParam.AbsValue = itEvent->Param.NoteSynthParam.Delta;
2017                            break;
2018                        case Event::synth_param_attack:
2019                            pNote->Override.Attack = itEvent->Param.NoteSynthParam.AbsValue = itEvent->Param.NoteSynthParam.Delta;
2020                            break;
2021                        case Event::synth_param_decay:
2022                            pNote->Override.Decay = itEvent->Param.NoteSynthParam.AbsValue = itEvent->Param.NoteSynthParam.Delta;
2023                            break;
2024                        case Event::synth_param_release:
2025                            pNote->Override.Release = itEvent->Param.NoteSynthParam.AbsValue = itEvent->Param.NoteSynthParam.Delta;
2026                            break;
2027                        case Event::synth_param_amp_lfo_depth:
2028                            pNote->Override.AmpLFODepth = itEvent->Param.NoteSynthParam.AbsValue = itEvent->Param.NoteSynthParam.Delta;
2029                            break;
2030                        case Event::synth_param_amp_lfo_freq:
2031                            pNote->Override.AmpLFOFreq = itEvent->Param.NoteSynthParam.AbsValue = itEvent->Param.NoteSynthParam.Delta;
2032                            break;
2033                        case Event::synth_param_pitch_lfo_depth:
2034                            pNote->Override.PitchLFODepth = itEvent->Param.NoteSynthParam.AbsValue = itEvent->Param.NoteSynthParam.Delta;
2035                            break;
2036                        case Event::synth_param_pitch_lfo_freq:
2037                            pNote->Override.PitchLFOFreq = itEvent->Param.NoteSynthParam.AbsValue = itEvent->Param.NoteSynthParam.Delta;
2038                            break;
2039                    }
2040    
2041                    // move note parameter event to its MIDI key
2042                    MidiKey* pKey = &pChannel->pMIDIKeyInfo[pNote->hostKey];
2043                    itEvent.moveToEndOf(pKey->pEvents);
2044              }              }
2045    
2046              /**              /**
2047               *  Reset all voices and disk thread and clear input event queue and all               *  Reset all voices and disk thread and clear input event queue and all
2048               *  control and status variables. This method is protected by a mutex.               *  control and status variables. This method is protected by a mutex.
2049               */               */
2050              virtual void ResetInternal() {              virtual void ResetInternal() OVERRIDE {
2051                  LockGuard lock(ResetInternalMutex);                  LockGuard lock(ResetInternalMutex);
2052    
2053                  // make sure that the engine does not get any sysex messages                  // make sure that the engine does not get any sysex messages
# Line 1352  namespace LinuxSampler { Line 2060  namespace LinuxSampler {
2060                  pVoiceStealingQueue->clear();                  pVoiceStealingQueue->clear();
2061                  itLastStolenVoice          = VoiceIterator();                  itLastStolenVoice          = VoiceIterator();
2062                  itLastStolenVoiceGlobally  = VoiceIterator();                  itLastStolenVoiceGlobally  = VoiceIterator();
2063                    itLastStolenNote           = NoteIterator();
2064                    itLastStolenNoteGlobally   = NoteIterator();
2065                  iuiLastStolenKey           = RTList<uint>::Iterator();                  iuiLastStolenKey           = RTList<uint>::Iterator();
2066                  iuiLastStolenKeyGlobally   = RTList<uint>::Iterator();                  iuiLastStolenKeyGlobally   = RTList<uint>::Iterator();
2067                  pLastStolenChannel         = NULL;                  pLastStolenChannel         = NULL;
2068    
2069                    // reset all notes
2070                    pNotePool->clear();
2071                    for (NoteIterator itNote = pNotePool->allocAppend(); itNote;
2072                         itNote = pNotePool->allocAppend())
2073                    {
2074                        itNote->reset();
2075                    }
2076                    pNotePool->clear();
2077    
2078                  // reset all voices                  // reset all voices
2079                    pVoicePool->clear();
2080                  for (VoiceIterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {                  for (VoiceIterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {
2081                      iterVoice->Reset();                      iterVoice->Reset();
2082                  }                  }
2083                  pVoicePool->clear();                  pVoicePool->clear();
2084    
2085                    // reset all engine channels
2086                    for (int i = 0; i < engineChannels.size(); i++) {
2087                        AbstractEngineChannel* pEngineChannel =
2088                            static_cast<AbstractEngineChannel*>(engineChannels[i]);
2089                        pEngineChannel->ResetInternal(false/*don't reset engine*/);
2090                    }
2091    
2092                  // reset disk thread                  // reset disk thread
2093                  if (pDiskThread) pDiskThread->Reset();                  if (pDiskThread) pDiskThread->Reset();
2094    
# Line 1379  namespace LinuxSampler { Line 2106  namespace LinuxSampler {
2106               * @param pEngineChannel - engine channel on which all voices should be killed               * @param pEngineChannel - engine channel on which all voices should be killed
2107               * @param itKillEvent    - event which caused this killing of all voices               * @param itKillEvent    - event which caused this killing of all voices
2108               */               */
2109              virtual void KillAllVoices(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itKillEvent) {              virtual void KillAllVoices(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itKillEvent) OVERRIDE {
2110                  EngineChannelBase<V, R, I>* pChannel = static_cast<EngineChannelBase<V, R, I>*>(pEngineChannel);                  EngineChannelBase<V, R, I>* pChannel = static_cast<EngineChannelBase<V, R, I>*>(pEngineChannel);
2111                  int count = pChannel->KillAllVoices(itKillEvent);                  int count = pChannel->KillAllVoices(itKillEvent);
2112                  VoiceSpawnsLeft -= count; //FIXME: just a temporary workaround, we should check the cause in StealVoice() instead                  VoiceSpawnsLeft -= count; //FIXME: just a temporary workaround, we should check the cause in StealVoice() instead
# Line 1390  namespace LinuxSampler { Line 2117  namespace LinuxSampler {
2117               *  called by the ProcessNoteOn() method and by the voices itself               *  called by the ProcessNoteOn() method and by the voices itself
2118               *  (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).
2119               *               *
2120               *  @param pEngineChannel      - engine channel on which this event occured on               *  @param pEngineChannel      - engine channel on which this event occurred on
2121               *  @param itNoteOnEvent       - key, velocity and time stamp of the event               *  @param itNoteOnEvent       - key, velocity and time stamp of the event
2122               *  @param iLayer              - layer index for the new voice (optional - only               *  @param iLayer              - layer index for the new voice (optional - only
2123               *                               in case of layered sounds of course)               *                               in case of layered sounds of course)
# Line 1414  namespace LinuxSampler { Line 2141  namespace LinuxSampler {
2141                  bool                    HandleKeyGroupConflicts                  bool                    HandleKeyGroupConflicts
2142              ) = 0;              ) = 0;
2143    
2144              virtual int GetMinFadeOutSamples() { return MinFadeOutSamples; }              virtual int GetMinFadeOutSamples() OVERRIDE { return MinFadeOutSamples; }
2145    
2146              int InitNewVoice (              int InitNewVoice (
2147                  EngineChannelBase<V, R, I>*  pChannel,                  EngineChannelBase<V, R, I>*  pChannel,
# Line 1433  namespace LinuxSampler { Line 2160  namespace LinuxSampler {
2160                      // launch the new voice                      // launch the new voice
2161                      if (itNewVoice->Trigger(pChannel, itNoteOnEvent, pChannel->Pitch, pRegion, VoiceType, iKeyGroup) < 0) {                      if (itNewVoice->Trigger(pChannel, itNoteOnEvent, pChannel->Pitch, pRegion, VoiceType, iKeyGroup) < 0) {
2162                          dmsg(4,("Voice not triggered\n"));                          dmsg(4,("Voice not triggered\n"));
2163                          pKey->pActiveVoices->free(itNewVoice);                          GetVoicePool()->free(itNewVoice);
2164                      }                      }
2165                      else { // on success                      else { // on success
2166                          --VoiceSpawnsLeft;                          --VoiceSpawnsLeft;
# Line 1482  namespace LinuxSampler { Line 2209  namespace LinuxSampler {
2209              }              }
2210    
2211          private:          private:
2212                Pool< Note<V> >* pNotePool;
2213                Pool<note_id_t> noteIDPool;
2214              Pool<V>*    pVoicePool;            ///< Contains all voices that can be activated.              Pool<V>*    pVoicePool;            ///< Contains all voices that can be activated.
2215              Pool<RR*>   SuspendedRegions;              Pool<RR*>   SuspendedRegions;
2216              Mutex       SuspendedRegionsMutex;              Mutex       SuspendedRegionsMutex;

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