/[svn]/linuxsampler/trunk/src/engines/EngineBase.h
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Diff of /linuxsampler/trunk/src/engines/EngineBase.h

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revision 2884 by schoenebeck, Wed Apr 20 15:22:58 2016 UTC revision 2972 by schoenebeck, Fri Jul 22 14:37:34 2016 UTC
# Line 689  namespace LinuxSampler { Line 689  namespace LinuxSampler {
689                  NoteIterator itNewNote = pNotePool->allocAppend();                  NoteIterator itNewNote = pNotePool->allocAppend();
690                  const note_id_t newNoteID = pNotePool->getID(itNewNote);                  const note_id_t newNoteID = pNotePool->getID(itNewNote);
691    
692                    // remember the engine's time when this note was triggered exactly
693                    itNewNote->triggerSchedTime = pNoteOnEvent->SchedTime();
694    
695                  // usually the new note (and its subsequent voices) will be                  // usually the new note (and its subsequent voices) will be
696                  // allocated on the key provided by the event's note number,                  // allocated on the key provided by the event's note number,
697                  // however if this new note is requested not to be a regular                  // however if this new note is requested not to be a regular
# Line 853  namespace LinuxSampler { Line 856  namespace LinuxSampler {
856                                  dmsg(5,("Engine: Note on received\n"));                                  dmsg(5,("Engine: Note on received\n"));
857                                  ProcessNoteOn((EngineChannel*)itEvent->pEngineChannel, itEvent);                                  ProcessNoteOn((EngineChannel*)itEvent->pEngineChannel, itEvent);
858                                  break;                                  break;
859                                case Event::type_play_note:
860                                    dmsg(5,("Engine: Play Note received\n"));
861                                    ProcessNoteOn((EngineChannel*)itEvent->pEngineChannel, itEvent);
862                                    break;
863                              case Event::type_note_off:                              case Event::type_note_off:
864                                  dmsg(5,("Engine: Note off received\n"));                                  dmsg(5,("Engine: Note off received\n"));
865                                  ProcessNoteOff((EngineChannel*)itEvent->pEngineChannel, itEvent);                                  ProcessNoteOff((EngineChannel*)itEvent->pEngineChannel, itEvent);
866                                  break;                                  break;
867                                case Event::type_stop_note:
868                                    dmsg(5,("Engine: Stop Note received\n"));
869                                    ProcessNoteOff((EngineChannel*)itEvent->pEngineChannel, itEvent);
870                                    break;
871                              case Event::type_control_change:                              case Event::type_control_change:
872                                  dmsg(5,("Engine: MIDI CC received\n"));                                  dmsg(5,("Engine: MIDI CC received\n"));
873                                  ProcessControlChange((EngineChannel*)itEvent->pEngineChannel, itEvent);                                  ProcessControlChange((EngineChannel*)itEvent->pEngineChannel, itEvent);
# Line 873  namespace LinuxSampler { Line 884  namespace LinuxSampler {
884                                  dmsg(5,("Engine: Pitchbend received\n"));                                  dmsg(5,("Engine: Pitchbend received\n"));
885                                  ProcessPitchbend(static_cast<AbstractEngineChannel*>(itEvent->pEngineChannel), itEvent);                                  ProcessPitchbend(static_cast<AbstractEngineChannel*>(itEvent->pEngineChannel), itEvent);
886                                  break;                                  break;
887                                case Event::type_note_synth_param:
888                                    dmsg(5,("Engine: Note Synth Param received\n"));
889                                    ProcessNoteSynthParam(itEvent->pEngineChannel, itEvent);
890                                    break;
891                          }                          }
892                      }                      }
893                  }                  }
# Line 975  namespace LinuxSampler { Line 990  namespace LinuxSampler {
990                  itScriptEvent->cause = *itEvent;                  itScriptEvent->cause = *itEvent;
991                  itScriptEvent->currentHandler = 0;                  itScriptEvent->currentHandler = 0;
992                  itScriptEvent->executionSlices = 0;                  itScriptEvent->executionSlices = 0;
993                    itScriptEvent->ignoreAllWaitCalls = false;
994                    itScriptEvent->handlerType = pEventHandler->eventHandlerType();
995                  // this is the native representation of the $EVENT_ID script variable                  // this is the native representation of the $EVENT_ID script variable
996                  itScriptEvent->id =                  itScriptEvent->id =
997                      (itEvent->Type == Event::type_note_on)                      (itEvent->Type == Event::type_note_on)
# Line 1242  namespace LinuxSampler { Line 1259  namespace LinuxSampler {
1259                          // the script's "init" event handler is only executed                          // the script's "init" event handler is only executed
1260                          // once (when the script is loaded or reloaded)                          // once (when the script is loaded or reloaded)
1261                          if (pEngineChannel->pScript && pEngineChannel->pScript->handlerInit) {                          if (pEngineChannel->pScript && pEngineChannel->pScript->handlerInit) {
1262                                dmsg(5,("Engine: exec handlerInit %p\n", pEngineChannel->pScript->handlerInit));
1263                              RTList<ScriptEvent>::Iterator itScriptEvent =                              RTList<ScriptEvent>::Iterator itScriptEvent =
1264                                  pEngineChannel->pScript->pEvents->allocAppend();                                  pEngineChannel->pScript->pEvents->allocAppend();
1265    
1266                              itScriptEvent->cause.pEngineChannel = pEngineChannel;                              itScriptEvent->cause.pEngineChannel = pEngineChannel;
1267                              itScriptEvent->handlers[0] = pEngineChannel->pScript->handlerInit;                              itScriptEvent->handlers[0] = pEngineChannel->pScript->handlerInit;
1268                              itScriptEvent->handlers[1] = NULL;                              itScriptEvent->handlers[1] = NULL;
1269                                itScriptEvent->currentHandler = 0;
1270                                itScriptEvent->executionSlices = 0;
1271                                itScriptEvent->ignoreAllWaitCalls = false;
1272                                itScriptEvent->handlerType = VM_EVENT_HANDLER_INIT;
1273    
1274                              VMExecStatus_t res = pScriptVM->exec(                              VMExecStatus_t res = pScriptVM->exec(
1275                                  pEngineChannel->pScript->parserContext, &*itScriptEvent                                  pEngineChannel->pScript->parserContext, &*itScriptEvent
# Line 1599  namespace LinuxSampler { Line 1621  namespace LinuxSampler {
1621    
1622                  MidiKey* pKey = &pChannel->pMIDIKeyInfo[key];                  MidiKey* pKey = &pChannel->pMIDIKeyInfo[key];
1623    
1624                  pChannel->listeners.PreProcessNoteOn(key, vel);                  // There are real MIDI note-on events (Event::type_note_on) and
1625                    // programmatically spawned notes (Event::type_play_note). We have
1626                    // to distinguish between them, since certain processing below
1627                    // must only be done on real MIDI note-on events (i.e. for
1628                    // correctly updating which MIDI keys are currently pressed down).
1629                    const bool isRealMIDINoteOnEvent = itNoteOnEvent->Type == Event::type_note_on;
1630    
1631                    if (isRealMIDINoteOnEvent)
1632                        pChannel->listeners.PreProcessNoteOn(key, vel);
1633    
1634                  #if !CONFIG_PROCESS_MUTED_CHANNELS                  #if !CONFIG_PROCESS_MUTED_CHANNELS
1635                  if (pEngineChannel->GetMute()) { // skip if sampler channel is muted                  if (pEngineChannel->GetMute()) { // skip if sampler channel is muted
1636                      pChannel->listeners.PostProcessNoteOn(key, vel);                      if (isRealMIDINoteOnEvent)
1637                            pChannel->listeners.PostProcessNoteOn(key, vel);
1638                      return;                      return;
1639                  }                  }
1640                  #endif                  #endif
1641    
1642                  if (!pChannel->pInstrument) {                  if (!pChannel->pInstrument) {
1643                      pChannel->listeners.PostProcessNoteOn(key, vel);                      if (isRealMIDINoteOnEvent)
1644                            pChannel->listeners.PostProcessNoteOn(key, vel);
1645                      return; // ignore if no instrument loaded                      return; // ignore if no instrument loaded
1646                  }                  }
1647    
# Line 1616  namespace LinuxSampler { Line 1649  namespace LinuxSampler {
1649                  RTList<Event>::Iterator itNoteOnEventOnKeyList = itNoteOnEvent.moveToEndOf(pKey->pEvents);                  RTList<Event>::Iterator itNoteOnEventOnKeyList = itNoteOnEvent.moveToEndOf(pKey->pEvents);
1650    
1651                  // if Solo Mode then kill all already active voices                  // if Solo Mode then kill all already active voices
1652                  if (pChannel->SoloMode) {                  if (pChannel->SoloMode && isRealMIDINoteOnEvent) {
1653                      Pool<uint>::Iterator itYoungestKey = pChannel->pActiveKeys->last();                      Pool<uint>::Iterator itYoungestKey = pChannel->pActiveKeys->last();
1654                      if (itYoungestKey) {                      if (itYoungestKey) {
1655                          const int iYoungestKey = *itYoungestKey;                          const int iYoungestKey = *itYoungestKey;
# Line 1645  namespace LinuxSampler { Line 1678  namespace LinuxSampler {
1678                      pChannel->SoloKey = key;                      pChannel->SoloKey = key;
1679                  }                  }
1680    
1681                  pChannel->ProcessKeySwitchChange(key);                  if (isRealMIDINoteOnEvent) {
1682                        pChannel->ProcessKeySwitchChange(key);
1683    
1684                  pKey->KeyPressed = true; // the MIDI key was now pressed down                      pKey->KeyPressed = true; // the MIDI key was now pressed down
1685                  pChannel->KeyDown[key] = true; // just used as built-in %KEY_DOWN script variable                      pChannel->KeyDown[key] = true; // just used as built-in %KEY_DOWN script variable
1686                  pKey->Velocity   = itNoteOnEventOnKeyList->Param.Note.Velocity;                      pKey->Velocity   = itNoteOnEventOnKeyList->Param.Note.Velocity;
1687                  pKey->NoteOnTime = FrameTime + itNoteOnEventOnKeyList->FragmentPos(); // will be used to calculate note length                      pKey->NoteOnTime = FrameTime + itNoteOnEventOnKeyList->FragmentPos(); // will be used to calculate note length
1688                    }
1689    
1690                  // cancel release process of voices on this key if needed                  // cancel release process of voices on this key if needed
1691                  if (pKey->Active && !pChannel->SustainPedal) {                  if (pKey->Active && !pChannel->SustainPedal && isRealMIDINoteOnEvent) {
1692                      RTList<Event>::Iterator itCancelReleaseEvent = pKey->pEvents->allocAppend();                      RTList<Event>::Iterator itCancelReleaseEvent = pKey->pEvents->allocAppend();
1693                      if (itCancelReleaseEvent) {                      if (itCancelReleaseEvent) {
1694                          *itCancelReleaseEvent = *itNoteOnEventOnKeyList;         // copy event                          *itCancelReleaseEvent = *itNoteOnEventOnKeyList;         // copy event
1695                          itCancelReleaseEvent->Type = Event::type_cancel_release; // transform event type                          itCancelReleaseEvent->Type = Event::type_cancel_release_key; // transform event type
1696                      }                      }
1697                      else dmsg(1,("Event pool emtpy!\n"));                      else dmsg(1,("Event pool emtpy!\n"));
1698                  }                  }
# Line 1668  namespace LinuxSampler { Line 1703  namespace LinuxSampler {
1703                  if (!pKey->Active && !pKey->VoiceTheftsQueued)                  if (!pKey->Active && !pKey->VoiceTheftsQueued)
1704                      pKey->pEvents->free(itNoteOnEventOnKeyList);                      pKey->pEvents->free(itNoteOnEventOnKeyList);
1705    
1706                  if (!pChannel->SoloMode || pChannel->PortamentoPos < 0.0f) pChannel->PortamentoPos = (float) key;                  if (isRealMIDINoteOnEvent && (!pChannel->SoloMode || pChannel->PortamentoPos < 0.0f))
1707                        pChannel->PortamentoPos = (float) key;
1708    
1709                    //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?
1710                  if (pKey->pRoundRobinIndex) {                  if (pKey->pRoundRobinIndex) {
1711                      (*pKey->pRoundRobinIndex)++; // counter specific for the key or region                      (*pKey->pRoundRobinIndex)++; // counter specific for the key or region
1712                      pChannel->RoundRobinIndex++; // common counter for the channel                      pChannel->RoundRobinIndex++; // common counter for the channel
1713                  }                  }
1714                  pChannel->listeners.PostProcessNoteOn(key, vel);  
1715                    if (isRealMIDINoteOnEvent)
1716                        pChannel->listeners.PostProcessNoteOn(key, vel);
1717              }              }
1718    
1719              /**              /**
# Line 1711  namespace LinuxSampler { Line 1751  namespace LinuxSampler {
1751    
1752                  MidiKey* pKey = &pChannel->pMIDIKeyInfo[iKey];                  MidiKey* pKey = &pChannel->pMIDIKeyInfo[iKey];
1753    
1754                  pChannel->listeners.PreProcessNoteOff(iKey, vel);                  // There are real MIDI note-off events (Event::type_note_off) and
1755                    // programmatically spawned notes (Event::type_stop_note). We have
1756                    // to distinguish between them, since certain processing below
1757                    // must only be done on real MIDI note-off events (i.e. for
1758                    // correctly updating which MIDI keys are currently pressed down),
1759                    // plus a stop-note event just releases voices of one particular
1760                    // note, whereas a note-off event releases all voices on a
1761                    // particular MIDI key instead.
1762                    const bool isRealMIDINoteOffEvent = itNoteOffEvent->Type == Event::type_note_off;
1763    
1764                    if (isRealMIDINoteOffEvent)
1765                        pChannel->listeners.PreProcessNoteOff(iKey, vel);
1766    
1767                  #if !CONFIG_PROCESS_MUTED_CHANNELS                  #if !CONFIG_PROCESS_MUTED_CHANNELS
1768                  if (pEngineChannel->GetMute()) { // skip if sampler channel is muted                  if (pEngineChannel->GetMute()) { // skip if sampler channel is muted
1769                      pChannel->listeners.PostProcessNoteOff(iKey, vel);                      if (isRealMIDINoteOffEvent)
1770                            pChannel->listeners.PostProcessNoteOff(iKey, vel);
1771                      return;                      return;
1772                  }                  }
1773                  #endif                  #endif
1774    
1775                  pKey->KeyPressed = false; // the MIDI key was now released                  if (isRealMIDINoteOffEvent) {
1776                  pChannel->KeyDown[iKey] = false; // just used as built-in %KEY_DOWN script variable                      pKey->KeyPressed = false; // the MIDI key was now released
1777                        pChannel->KeyDown[iKey] = false; // just used as built-in %KEY_DOWN script variable
1778                    }
1779    
1780                  // move event to the key's own event list                  // move event to the key's own event list
1781                  RTList<Event>::Iterator itNoteOffEventOnKeyList = itNoteOffEvent.moveToEndOf(pKey->pEvents);                  RTList<Event>::Iterator itNoteOffEventOnKeyList = itNoteOffEvent.moveToEndOf(pKey->pEvents);
1782    
1783                  bool bShouldRelease = pKey->Active && pChannel->ShouldReleaseVoice(itNoteOffEventOnKeyList->Param.Note.Key);                  if (isRealMIDINoteOffEvent) {
1784                        bool bShouldRelease = pKey->Active && pChannel->ShouldReleaseVoice(itNoteOffEventOnKeyList->Param.Note.Key);
1785    
1786                  // 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)
1787                  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
1788                      bool bOtherKeysPressed = false;                          bool bOtherKeysPressed = false;
1789                      if (iKey == pChannel->SoloKey) {                          if (iKey == pChannel->SoloKey) {
1790                          pChannel->SoloKey = -1;                              pChannel->SoloKey = -1;
1791                          // 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
1792                          for (int i = 127; i > 0; i--) {                              for (int i = 127; i > 0; i--) {
1793                              MidiKey* pOtherKey = &pChannel->pMIDIKeyInfo[i];                                  MidiKey* pOtherKey = &pChannel->pMIDIKeyInfo[i];
1794                              if (pOtherKey->KeyPressed) {                                  if (pOtherKey->KeyPressed) {
1795                                  bOtherKeysPressed = true;                                      bOtherKeysPressed = true;
1796                                  // make the other key the new 'currently active solo key'                                      // make the other key the new 'currently active solo key'
1797                                  pChannel->SoloKey = i;                                      pChannel->SoloKey = i;
1798                                  // get final portamento position of currently active voice                                      // get final portamento position of currently active voice
1799                                  if (pChannel->PortamentoMode) {                                      if (pChannel->PortamentoMode) {
1800                                      NoteIterator itNote = pKey->pActiveNotes->first();                                          NoteIterator itNote = pKey->pActiveNotes->first();
1801                                      VoiceIterator itVoice = itNote->pActiveVoices->first();                                          VoiceIterator itVoice = itNote->pActiveVoices->first();
1802                                      if (itVoice) itVoice->UpdatePortamentoPos(itNoteOffEventOnKeyList);                                          if (itVoice) itVoice->UpdatePortamentoPos(itNoteOffEventOnKeyList);
                                 }  
                                 // create a pseudo note on event  
                                 RTList<Event>::Iterator itPseudoNoteOnEvent = pOtherKey->pEvents->allocAppend();  
                                 if (itPseudoNoteOnEvent) {  
                                     // copy event  
                                     *itPseudoNoteOnEvent = *itNoteOffEventOnKeyList;  
                                     // transform event to a note on event  
                                     itPseudoNoteOnEvent->Type                = Event::type_note_on;  
                                     itPseudoNoteOnEvent->Param.Note.Key      = i;  
                                     itPseudoNoteOnEvent->Param.Note.Velocity = pOtherKey->Velocity;  
                                     // assign a new note to this note-on event  
                                     if (LaunchNewNote(pChannel, &*itPseudoNoteOnEvent)) {  
                                         // allocate and trigger new voice(s) for the other key  
                                         TriggerNewVoices(pChannel, itPseudoNoteOnEvent, false);  
1803                                      }                                      }
1804                                      // if neither a voice was spawned or postponed then remove note on event from key again                                      // create a pseudo note on event
1805                                      if (!pOtherKey->Active && !pOtherKey->VoiceTheftsQueued)                                      RTList<Event>::Iterator itPseudoNoteOnEvent = pOtherKey->pEvents->allocAppend();
1806                                          pOtherKey->pEvents->free(itPseudoNoteOnEvent);                                      if (itPseudoNoteOnEvent) {
1807                                            // copy event
1808                                            *itPseudoNoteOnEvent = *itNoteOffEventOnKeyList;
1809                                            // transform event to a note on event
1810                                            itPseudoNoteOnEvent->Type                = Event::type_note_on; //FIXME: should probably use Event::type_play_note instead (to avoid i.e. hanging notes)
1811                                            itPseudoNoteOnEvent->Param.Note.Key      = i;
1812                                            itPseudoNoteOnEvent->Param.Note.Velocity = pOtherKey->Velocity;
1813                                            // assign a new note to this note-on event
1814                                            if (LaunchNewNote(pChannel, &*itPseudoNoteOnEvent)) {
1815                                                // allocate and trigger new voice(s) for the other key
1816                                                TriggerNewVoices(pChannel, itPseudoNoteOnEvent, false);
1817                                            }
1818                                            // if neither a voice was spawned or postponed then remove note on event from key again
1819                                            if (!pOtherKey->Active && !pOtherKey->VoiceTheftsQueued)
1820                                                pOtherKey->pEvents->free(itPseudoNoteOnEvent);
1821    
1822                                  } else dmsg(1,("Could not respawn voice, no free event left\n"));                                      } else dmsg(1,("Could not respawn voice, no free event left\n"));
1823                                  break; // done                                      break; // done
1824                                    }
1825                              }                              }
1826                          }                          }
1827                      }                          if (bOtherKeysPressed) {
1828                      if (bOtherKeysPressed) {                              if (pKey->Active) { // kill all voices on this key
1829                          if (pKey->Active) { // kill all voices on this key                                  bShouldRelease = false; // no need to release, as we kill it here
1830                              bShouldRelease = false; // no need to release, as we kill it here                                  for (NoteIterator itNote = pKey->pActiveNotes->first(); itNote; ++itNote) {
1831                              for (NoteIterator itNote = pKey->pActiveNotes->first(); itNote; ++itNote) {                                      VoiceIterator itVoiceToBeKilled = itNote->pActiveVoices->first();
1832                                  VoiceIterator itVoiceToBeKilled = itNote->pActiveVoices->first();                                      VoiceIterator end               = itNote->pActiveVoices->end();
1833                                  VoiceIterator end               = itNote->pActiveVoices->end();                                      for (; itVoiceToBeKilled != end; ++itVoiceToBeKilled) {
1834                                  for (; itVoiceToBeKilled != end; ++itVoiceToBeKilled) {                                          if (!(itVoiceToBeKilled->Type & Voice::type_release_trigger))
1835                                      if (!(itVoiceToBeKilled->Type & Voice::type_release_trigger))                                              itVoiceToBeKilled->Kill(itNoteOffEventOnKeyList);
1836                                          itVoiceToBeKilled->Kill(itNoteOffEventOnKeyList);                                      }
1837                                  }                                  }
1838                              }                              }
1839                          }                          } else pChannel->PortamentoPos = -1.0f;
1840                      } else pChannel->PortamentoPos = -1.0f;                      }
                 }  
1841    
1842                  // 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 no solo mode (the usual case) or if solo mode and no other key pressed, then release voices on this key if needed
1843                  if (bShouldRelease) {                      if (bShouldRelease) {
1844                      itNoteOffEventOnKeyList->Type = Event::type_release; // transform event type                          itNoteOffEventOnKeyList->Type = Event::type_release_key; // transform event type
1845                            // spawn release triggered voice(s) if needed
1846                      // spawn release triggered voice(s) if needed                          ProcessReleaseTrigger(pChannel, itNoteOffEventOnKeyList, pKey);
1847                      if (pKey->ReleaseTrigger && pChannel->pInstrument) {                      }
1848                          // assign a new note to this release event                  } else if (itNoteOffEventOnKeyList->Type == Event::type_stop_note) {
1849                          if (LaunchNewNote(pChannel, &*itNoteOffEventOnKeyList)) {                      // This programmatically caused event is caused by a call to
1850                              // allocate and trigger new release voice(s)                      // the built-in instrument script function note_off(). In
1851                              TriggerReleaseVoices(pChannel, itNoteOffEventOnKeyList);                      // contrast to a real MIDI note-off event the stop-note
1852                          }                      // event just intends to release voices of one particular note.
1853                          pKey->ReleaseTrigger = false;                      NoteBase* pNote = pChannel->pEngine->NoteByID( itNoteOffEventOnKeyList->Param.Note.ID );
1854                        if (pNote) { // the requested note is still alive ...
1855                            itNoteOffEventOnKeyList->Type = Event::type_release_note; // transform event type
1856                        } else { // note is dead and gone ..
1857                            pKey->pEvents->free(itNoteOffEventOnKeyList); // remove stop-note event from key again
1858                            return; // prevent event to be removed a 2nd time below
1859                      }                      }
1860                  }                  }
1861    
# Line 1803  namespace LinuxSampler { Line 1863  namespace LinuxSampler {
1863                  if (!pKey->Active && !pKey->VoiceTheftsQueued)                  if (!pKey->Active && !pKey->VoiceTheftsQueued)
1864                      pKey->pEvents->free(itNoteOffEventOnKeyList);                      pKey->pEvents->free(itNoteOffEventOnKeyList);
1865    
1866                  pChannel->listeners.PostProcessNoteOff(iKey, vel);                  if (isRealMIDINoteOffEvent)
1867                        pChannel->listeners.PostProcessNoteOff(iKey, vel);
1868                }
1869    
1870                /**
1871                 * Called on sustain pedal up events to check and if required,
1872                 * launch release trigger voices on the respective active key.
1873                 *
1874                 * @param pEngineChannel - engine channel on which this event occurred on
1875                 * @param itEvent - release trigger event (contains note number)
1876                 */
1877                virtual void ProcessReleaseTrigger(EngineChannel* pEngineChannel, RTList<Event>::Iterator& itEvent) OVERRIDE {
1878                    EngineChannelBase<V, R, I>* pChannel = static_cast<EngineChannelBase<V, R, I>*>(pEngineChannel);
1879    
1880                    const int iKey = itEvent->Param.Note.Key;
1881                    if (iKey < 0 || iKey > 127) return; // ignore event, key outside allowed key range
1882    
1883                    MidiKey* pKey = &pChannel->pMIDIKeyInfo[iKey];
1884    
1885                    ProcessReleaseTrigger(pChannel, itEvent, pKey);
1886                }
1887    
1888                /**
1889                 * Called on note-off and sustain pedal up events to check and if
1890                 * required, launch release trigger voices on the respective active
1891                 * key.
1892                 *
1893                 * @param pEngineChannel - engine channel on which this event occurred on
1894                 * @param itEvent - note off event / release trigger event
1895                 * @param pKey - key on which the release trigger voices shall be spawned
1896                 */
1897                inline void ProcessReleaseTrigger(EngineChannelBase<V, R, I>* pChannel, RTList<Event>::Iterator& itEvent, MidiKey* pKey) {
1898                    // spawn release triggered voice(s) if needed
1899                    if (pKey->ReleaseTrigger && pChannel->pInstrument) {
1900                        // assign a new note to this release event
1901                        if (LaunchNewNote(pChannel, &*itEvent)) {
1902                            // allocate and trigger new release voice(s)
1903                            TriggerReleaseVoices(pChannel, itEvent);
1904                        }
1905                        pKey->ReleaseTrigger = false;
1906                    }
1907                }
1908    
1909                /**
1910                 * Called on note synthesis parameter change events. These are
1911                 * internal events caused by calling built-in real-time instrument
1912                 * script functions like change_vol(), change_pitch(), etc.
1913                 *
1914                 * This method performs two tasks:
1915                 *
1916                 * - It converts the event's relative values changes (Deltas) to
1917                 *   the respective final new synthesis parameter value (AbsValue),
1918                 *   for that particular moment of the event that is.
1919                 *
1920                 * - It moves the individual events to the Note's own event list
1921                 *   (or actually to the event list of the MIDI key), so that
1922                 *   voices can process those events sample accurately.
1923                 *
1924                 * @param pEngineChannel - engine channel on which this event occurred on
1925                 * @param itEvent - note synthesis parameter change event
1926                 */
1927                virtual void ProcessNoteSynthParam(EngineChannel* pEngineChannel, RTList<Event>::Iterator& itEvent) {
1928                    EngineChannelBase<V, R, I>* pChannel = static_cast<EngineChannelBase<V, R, I>*>(pEngineChannel);
1929    
1930                    NoteBase* pNote = pChannel->pEngine->NoteByID( itEvent->Param.NoteSynthParam.NoteID );
1931                    if (!pNote || pNote->hostKey < 0 || pNote->hostKey >= 128) return;
1932    
1933                    const bool& relative = itEvent->Param.NoteSynthParam.Relative;
1934    
1935                    switch (itEvent->Param.NoteSynthParam.Type) {
1936                        case Event::synth_param_volume:
1937                            if (relative)
1938                                pNote->Override.Volume *= itEvent->Param.NoteSynthParam.Delta;
1939                            else
1940                                pNote->Override.Volume = itEvent->Param.NoteSynthParam.Delta;
1941                            itEvent->Param.NoteSynthParam.AbsValue = pNote->Override.Volume;
1942                            break;
1943                        case Event::synth_param_pitch:
1944                            if (relative)
1945                                pNote->Override.Pitch *= itEvent->Param.NoteSynthParam.Delta;
1946                            else
1947                                pNote->Override.Pitch = itEvent->Param.NoteSynthParam.Delta;
1948                            itEvent->Param.NoteSynthParam.AbsValue = pNote->Override.Pitch;
1949                            break;
1950                        case Event::synth_param_pan:
1951                            if (relative) {
1952                                pNote->Override.Pan = RTMath::RelativeSummedAvg(pNote->Override.Pan, itEvent->Param.NoteSynthParam.Delta, ++pNote->Override.PanSources);
1953                            } else {
1954                                pNote->Override.Pan = itEvent->Param.NoteSynthParam.Delta;
1955                                pNote->Override.PanSources = 1; // only relevant on subsequent change_pan() instrument script calls on same note with 'relative' argument being set
1956                            }
1957                            itEvent->Param.NoteSynthParam.AbsValue = pNote->Override.Pan;
1958                            break;
1959                        case Event::synth_param_cutoff:
1960                            pNote->Override.Cutoff = itEvent->Param.NoteSynthParam.AbsValue = itEvent->Param.NoteSynthParam.Delta;
1961                            break;
1962                        case Event::synth_param_resonance:
1963                            pNote->Override.Resonance = itEvent->Param.NoteSynthParam.AbsValue = itEvent->Param.NoteSynthParam.Delta;
1964                            break;
1965                        case Event::synth_param_attack:
1966                            pNote->Override.Attack = itEvent->Param.NoteSynthParam.AbsValue = itEvent->Param.NoteSynthParam.Delta;
1967                            break;
1968                        case Event::synth_param_decay:
1969                            pNote->Override.Decay = itEvent->Param.NoteSynthParam.AbsValue = itEvent->Param.NoteSynthParam.Delta;
1970                            break;
1971                        case Event::synth_param_release:
1972                            pNote->Override.Release = itEvent->Param.NoteSynthParam.AbsValue = itEvent->Param.NoteSynthParam.Delta;
1973                            break;
1974                    }
1975    
1976                    // move note parameter event to its MIDI key
1977                    MidiKey* pKey = &pChannel->pMIDIKeyInfo[pNote->hostKey];
1978                    itEvent.moveToEndOf(pKey->pEvents);
1979              }              }
1980    
1981              /**              /**
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