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

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revision 2521 by schoenebeck, Wed Feb 19 19:02:43 2014 UTC revision 3054 by schoenebeck, Thu Dec 15 12:47:45 2016 UTC
# Line 5  Line 5 
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) 2009-2012 Christian Schoenebeck and Grigor Iliev        *   *   Copyright (C) 2009-2012 Christian Schoenebeck and Grigor Iliev        *
8   *   Copyright (C) 2013-2014 Christian Schoenebeck and Andreas Persson     *   *   Copyright (C) 2012-2016 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 35  namespace LinuxSampler { Line 35  namespace LinuxSampler {
35      {      {
36          pEngine      = NULL;          pEngine      = NULL;
37          pEvents      = NULL; // we allocate when we retrieve the right Engine object          pEvents      = NULL; // we allocate when we retrieve the right Engine object
38            delayedEvents.pList = NULL;
39          pEventQueue  = new RingBuffer<Event,false>(CONFIG_MAX_EVENTS_PER_FRAGMENT, 0);          pEventQueue  = new RingBuffer<Event,false>(CONFIG_MAX_EVENTS_PER_FRAGMENT, 0);
40          InstrumentIdx  = -1;          InstrumentIdx  = -1;
41          InstrumentStat = -1;          InstrumentStat = -1;
# Line 46  namespace LinuxSampler { Line 47  namespace LinuxSampler {
47          ResetControllers();          ResetControllers();
48          PortamentoMode = false;          PortamentoMode = false;
49          PortamentoTime = CONFIG_PORTAMENTO_TIME_DEFAULT;          PortamentoTime = CONFIG_PORTAMENTO_TIME_DEFAULT;
50            pScript = NULL;
51      }      }
52    
53      AbstractEngineChannel::~AbstractEngineChannel() {      AbstractEngineChannel::~AbstractEngineChannel() {
# Line 100  namespace LinuxSampler { Line 102  namespace LinuxSampler {
102    
103      void AbstractEngineChannel::Reset() {      void AbstractEngineChannel::Reset() {
104          if (pEngine) pEngine->DisableAndLock();          if (pEngine) pEngine->DisableAndLock();
105          ResetInternal();          ResetInternal(false/*don't reset engine*/);
106          ResetControllers();          ResetControllers();
107          if (pEngine) {          if (pEngine) {
108              pEngine->Enable();              pEngine->Enable();
# Line 128  namespace LinuxSampler { Line 130  namespace LinuxSampler {
130      /**      /**
131       * This method is not thread safe!       * This method is not thread safe!
132       */       */
133      void AbstractEngineChannel::ResetInternal() {      void AbstractEngineChannel::ResetInternal(bool bResetEngine) {
134          CurrentKeyDimension = 0;          CurrentKeyDimension = 0;
135          PortamentoPos = -1.0f; // no portamento active yet          PortamentoPos = -1.0f; // no portamento active yet
136    
137            // delete all active instrument script events
138            if (pScript) pScript->resetEvents();
139    
140            // free all delayed MIDI events
141            delayedEvents.clear();
142    
143          // delete all input events          // delete all input events
144          pEventQueue->init();          pEventQueue->init();
145    
146          if (pEngine) pEngine->ResetInternal();          if (bResetEngine && pEngine) pEngine->ResetInternal();
147    
148          // status of engine channel has changed, so set notify flag          // status of engine channel has changed, so set notify flag
149          bStatusChanged = true;          bStatusChanged = true;
# Line 619  namespace LinuxSampler { Line 627  namespace LinuxSampler {
627          }          }
628      }      }
629    
630        void AbstractEngineChannel::SendChannelPressure(uint8_t Value, uint8_t MidiChannel) {
631            if (pEngine) {
632                // protection in case there are more than 1 MIDI input threads sending MIDI events to this EngineChannel
633                LockGuard g;
634                if (hasMultipleMIDIInputs()) g = LockGuard(MidiInputMutex);
635    
636                Event event = pEngine->pEventGenerator->CreateEvent();
637                event.Type                          = Event::type_channel_pressure;
638                event.Param.ChannelPressure.Controller = CTRL_TABLE_IDX_AFTERTOUCH; // required for instrument scripts
639                event.Param.ChannelPressure.Value   = Value;
640                event.Param.ChannelPressure.Channel = MidiChannel;
641                event.pEngineChannel                = this;
642                if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
643                else dmsg(1,("AbstractEngineChannel: Input event queue full!"));
644            }
645        }
646    
647        void AbstractEngineChannel::SendChannelPressure(uint8_t Value, uint8_t MidiChannel, int32_t FragmentPos) {
648            if (pEngine) {
649                // protection in case there are more than 1 MIDI input threads sending MIDI events to this EngineChannel
650                LockGuard g;
651                if (hasMultipleMIDIInputs()) g = LockGuard(MidiInputMutex);
652    
653                Event event = pEngine->pEventGenerator->CreateEvent(FragmentPos);
654                event.Type                          = Event::type_channel_pressure;
655                event.Param.ChannelPressure.Controller = CTRL_TABLE_IDX_AFTERTOUCH; // required for instrument scripts
656                event.Param.ChannelPressure.Value   = Value;
657                event.Param.ChannelPressure.Channel = MidiChannel;
658                event.pEngineChannel                = this;
659                if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
660                else dmsg(1,("AbstractEngineChannel: Input event queue full!"));
661            }
662        }
663    
664        void AbstractEngineChannel::SendPolyphonicKeyPressure(uint8_t Key, uint8_t Value, uint8_t MidiChannel) {
665            if (pEngine) {
666                // protection in case there are more than 1 MIDI input threads sending MIDI events to this EngineChannel
667                LockGuard g;
668                if (hasMultipleMIDIInputs()) g = LockGuard(MidiInputMutex);
669    
670                Event event = pEngine->pEventGenerator->CreateEvent();
671                event.Type                       = Event::type_note_pressure;
672                event.Param.NotePressure.Key     = Key;
673                event.Param.NotePressure.Value   = Value;
674                event.Param.NotePressure.Channel = MidiChannel;
675                event.pEngineChannel             = this;
676                if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
677                else dmsg(1,("AbstractEngineChannel: Input event queue full!"));
678            }
679        }
680    
681        void AbstractEngineChannel::SendPolyphonicKeyPressure(uint8_t Key, uint8_t Value, uint8_t MidiChannel, int32_t FragmentPos) {
682            if (pEngine) {
683                // protection in case there are more than 1 MIDI input threads sending MIDI events to this EngineChannel
684                LockGuard g;
685                if (hasMultipleMIDIInputs()) g = LockGuard(MidiInputMutex);
686    
687                Event event = pEngine->pEventGenerator->CreateEvent(FragmentPos);
688                event.Type                       = Event::type_note_pressure;
689                event.Param.NotePressure.Key     = Key;
690                event.Param.NotePressure.Value   = Value;
691                event.Param.NotePressure.Channel = MidiChannel;
692                event.pEngineChannel             = this;
693                if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
694                else dmsg(1,("AbstractEngineChannel: Input event queue full!"));
695            }
696        }
697    
698        bool AbstractEngineChannel::applyTranspose(Event* event) {
699            if (event->Type != Event::type_note_on && event->Type != Event::type_note_off)
700                return true; // event OK (not a note event, nothing to do with it here)
701    
702            //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
703            const int k = event->Param.Note.Key + GlobalTranspose;
704            if (k < 0 || k > 127)
705                return false; // bad event, drop it
706    
707            event->Param.Note.Key = k;
708    
709            return true; // event OK
710        }
711    
712      /**      /**
713       * Copy all events from the engine channel's input event queue buffer to       * Copy all events from the engine channel's input event queue buffer to
714       * the internal event list. This will be done at the beginning of each       * the internal event list. This will be done at the beginning of each
# Line 655  namespace LinuxSampler { Line 745  namespace LinuxSampler {
745                              event.Param.Note.Key      = devEvent.Arg1;                              event.Param.Note.Key      = devEvent.Arg1;
746                              event.Param.Note.Velocity = devEvent.Arg2;                              event.Param.Note.Velocity = devEvent.Arg2;
747                              event.Param.Note.Channel  = channel;                              event.Param.Note.Channel  = channel;
748                                // apply transpose setting to (note on/off) event
749                                if (!applyTranspose(&event))
750                                    continue; // note value is out of range, so drop this event
751                                // assign a new note to this note-on event
752                                if (!pEngine->LaunchNewNote(this, &event))
753                                    continue; // failed launching new note, so drop this event
754                              break;                              break;
755                          case VirtualMidiDevice::EVENT_TYPE_NOTEOFF:                          case VirtualMidiDevice::EVENT_TYPE_NOTEOFF:
756                              event.Type = Event::type_note_off;                              event.Type = Event::type_note_off;
757                              event.Param.Note.Key      = devEvent.Arg1;                              event.Param.Note.Key      = devEvent.Arg1;
758                              event.Param.Note.Velocity = devEvent.Arg2;                              event.Param.Note.Velocity = devEvent.Arg2;
759                              event.Param.Note.Channel  = channel;                              event.Param.Note.Channel  = channel;
760                                if (!applyTranspose(&event))
761                                    continue; // note value is out of range, so drop this event
762                              break;                              break;
763                          case VirtualMidiDevice::EVENT_TYPE_CC:                          case VirtualMidiDevice::EVENT_TYPE_CC:
764                              switch (devEvent.Arg1) {                              switch (devEvent.Arg1) {
# Line 685  namespace LinuxSampler { Line 783  namespace LinuxSampler {
783                          case VirtualMidiDevice::EVENT_TYPE_PROGRAM:                          case VirtualMidiDevice::EVENT_TYPE_PROGRAM:
784                              SendProgramChange(devEvent.Arg1);                              SendProgramChange(devEvent.Arg1);
785                              continue; // don't push this event into FIFO                              continue; // don't push this event into FIFO
786                            case VirtualMidiDevice::EVENT_TYPE_CHPRESSURE:
787                                event.Type = Event::type_channel_pressure;
788                                event.Param.ChannelPressure.Controller = CTRL_TABLE_IDX_AFTERTOUCH;
789                                event.Param.ChannelPressure.Value   = devEvent.Arg2;
790                                event.Param.ChannelPressure.Channel = channel;
791                                break;
792                          default:                          default:
793                              std::cerr << "AbstractEngineChannel::ImportEvents() ERROR: unknown event type ("                              std::cerr << "AbstractEngineChannel::ImportEvents() ERROR: unknown event type ("
794                                        << devEvent.Type << "). This is a bug!";                                        << devEvent.Type << "). This is a bug!";
# Line 716  namespace LinuxSampler { Line 820  namespace LinuxSampler {
820                  pEvent->ResetFragmentPos();                  pEvent->ResetFragmentPos();
821                  break;                  break;
822              }              }
             // copy event to internal event list  
823              if (pEvents->poolIsEmpty()) {              if (pEvents->poolIsEmpty()) {
824                  dmsg(1,("Event pool emtpy!\n"));                  dmsg(1,("Event pool emtpy!\n"));
825                  break;                  break;
826              }              }
827                // apply transpose setting to (note on/off) event
828                if (!applyTranspose(pEvent))
829                    continue; // it's a note event which has a note value out of range, so drop this event
830                // assign a new note to this event (if its a note-on event)
831                if (pEvent->Type == Event::type_note_on)
832                    if (!pEngine->LaunchNewNote(this, pEvent))
833                        continue; // failed launching new note, so drop this event
834                // copy event to internal event list
835              *pEvents->allocAppend() = *pEvent;              *pEvents->allocAppend() = *pEvent;
836          }          }
837          eventQueueReader.free(); // free all copied events from input queue          eventQueueReader.free(); // free all copied events from input queue
838      }      }
839    
840        /**
841         * Called by real-time instrument script functions to schedule a new event
842         * @a delay microseconds in future.
843         *
844         * @b IMPORTANT: for the supplied @a delay to be scheduled correctly, the
845         * passed @a pEvent must be assigned a valid fragment time within the
846         * current audio fragment boundaries. That fragment time will be used by
847         * this method as basis for interpreting what "now" acutally is, and thus
848         * it will be used as basis for calculating the precise scheduling time
849         * for @a delay. The easiest way to achieve this is by copying a recent
850         * event which happened within the current audio fragment cycle: i.e. the
851         * original event which caused calling this method here.
852         *
853         * @param pEvent - event to be scheduled in future (event data will be copied)
854         * @param delay - amount of microseconds in future (from now) when event shall be processed
855         * @returns unique event ID of scheduled new event, or NULL on error
856         */
857        event_id_t AbstractEngineChannel::ScheduleEventMicroSec(const Event* pEvent, int delay) {
858            dmsg(3,("AbstractEngineChannel::ScheduleEventMicroSec(Event.Type=%d,delay=%d)\n", pEvent->Type, delay));
859            RTList<Event>::Iterator itEvent = pEvents->allocAppend();
860            if (!itEvent) {
861                dmsg(1,("AbstractEngineChannel::ScheduleEventMicroSec(): Event pool emtpy!\n"));
862                return 0;
863            }
864            RTList<ScheduledEvent>::Iterator itNode = delayedEvents.schedulerNodes.allocAppend();
865            if (!itNode) { // scheduler node pool empty ...
866                dmsg(1,("AbstractEngineChannel::ScheduleEventMicroSec(): ScheduledEvent pool empty!\n"));
867                pEvents->free(itEvent);
868                return 0;
869            }
870            // copy passed event
871            *itEvent = *pEvent;
872            // move copied event to list of delayed events
873            itEvent = itEvent.moveToEndOf(delayedEvents.pList);
874            // connect scheduler node with the copied event
875            itNode->itEvent = itEvent;
876            // add entry to time sorted scheduler queue for copied event
877            pEngine->pEventGenerator->scheduleAheadMicroSec(
878                delayedEvents.queue, *itNode, itEvent->FragmentPos(), delay
879            );
880            //dmsg(5,("ScheduledEvent queue size: %d\n", delayedEvents.queue.size()));
881            return pEvents->getID(itEvent);
882        }
883    
884        /**
885         * Called by real-time instrument script functions to ignore the event
886         * reflected by given event ID. The event will be freed immediately to its
887         * pool and cannot be dereferenced by its old ID anymore. Even if its
888         * allocated back from the Pool later on, it will have a different ID.
889         *
890         * @param id - unique ID of event to be dropped
891         */
892        void AbstractEngineChannel::IgnoreEvent(event_id_t id) {
893            RTList<Event>::Iterator it = pEvents->fromID(id);
894            if (it) pEvents->free(it);
895        }
896    
897        /** @brief Drop the requested event.
898         *
899         * Called by real-time instrument script functions to ignore the event
900         * reflected by the given event @a id. This method detects whether the
901         * passed ID is actually a @c Note ID or a regular @c Event ID and act
902         * accordingly.
903         *
904         * @param id - event id (from script scope)
905         * @see ScriptID
906         */
907        void AbstractEngineChannel::IgnoreEventByScriptID(const ScriptID& id) {
908            switch (id.type()) {
909                case ScriptID::EVENT:
910                    IgnoreEvent( id.eventID() );
911                    break;
912                case ScriptID::NOTE:
913                    IgnoreNote( id.noteID() );
914                    break;
915            }
916        }
917    
918        /** @brief Order resuming of script execution instance "now".
919         *
920         * Called by real-time instrument script function stop_wait() to resume a
921         * script callback currently being suspended (i.e. due to a wait() script
922         * function call).
923         *
924         * @param itCallback - suspended script callback to be resumed
925         * @param now - current scheduler time to be "now"
926         * @param forever - whether this particulare script callback should ignore
927         *                  all subsequent wait*() script function calls
928         */
929        void AbstractEngineChannel::ScheduleResumeOfScriptCallback(RTList<ScriptEvent>::Iterator& itCallback, sched_time_t now, bool forever) {
930            // ignore if invalid iterator was passed
931            if (!itCallback) return;
932    
933            ScriptEvent* pCallback = &*itCallback;
934    
935            // mark this callback to ignore all subsequent built-in wait*() script function calls
936            if (forever) pCallback->ignoreAllWaitCalls = true;
937    
938            // ignore if callback is not in the scheduler queue
939            if (pCallback->currentSchedulerQueue() != &pScript->suspendedEvents) return;
940    
941            // ignore if callback is already scheduled to be resumed "now"
942            if (pCallback->scheduleTime <= now) return;
943    
944            // take it out from the scheduler queue and re-insert callback
945            // to schedule the script callback for resuming execution "now"
946            pScript->suspendedEvents.erase(*pCallback);
947            pCallback->scheduleTime = now + 1;
948            pScript->suspendedEvents.insert(*pCallback);
949        }
950    
951      FxSend* AbstractEngineChannel::AddFxSend(uint8_t MidiCtrl, String Name) throw (Exception) {      FxSend* AbstractEngineChannel::AddFxSend(uint8_t MidiCtrl, String Name) throw (Exception) {
952          if (pEngine) pEngine->DisableAndLock();          if (pEngine) pEngine->DisableAndLock();
953          FxSend* pFxSend = new FxSend(this, MidiCtrl, Name);          FxSend* pFxSend = new FxSend(this, MidiCtrl, Name);
# Line 753  namespace LinuxSampler { Line 975  namespace LinuxSampler {
975      }      }
976    
977      uint AbstractEngineChannel::GetFxSendCount() {      uint AbstractEngineChannel::GetFxSendCount() {
978          return fxSends.size();          return (uint)fxSends.size();
979      }      }
980    
981      void AbstractEngineChannel::RemoveFxSend(FxSend* pFxSend) {      void AbstractEngineChannel::RemoveFxSend(FxSend* pFxSend) {
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