/[svn]/linuxsampler/trunk/src/engines/AbstractEngineChannel.cpp
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revision 2500 by schoenebeck, Fri Jan 10 12:20:05 2014 UTC revision 2884 by schoenebeck, Wed Apr 20 15:22:58 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                              event.Type = Event::type_control_change;                              switch (devEvent.Arg1) {
765                              event.Param.CC.Controller = devEvent.Arg1;                                  case 0: // bank select MSB ...
766                              event.Param.CC.Value      = devEvent.Arg2;                                      SetMidiBankMsb(devEvent.Arg2);
767                              event.Param.CC.Channel    = channel;                                      continue; // don't push this event into FIFO
768                                    case 32: // bank select LSB ...
769                                        SetMidiBankLsb(devEvent.Arg2);
770                                        continue; // don't push this event into FIFO
771                                    default: // regular MIDI CC ...
772                                        event.Type = Event::type_control_change;
773                                        event.Param.CC.Controller = devEvent.Arg1;
774                                        event.Param.CC.Value      = devEvent.Arg2;
775                                        event.Param.CC.Channel    = channel;
776                                }
777                                break;
778                            case VirtualMidiDevice::EVENT_TYPE_PITCHBEND:
779                                event.Type = Event::type_pitchbend;
780                                event.Param.Pitch.Pitch = int(devEvent.Arg2 << 7 | devEvent.Arg1) - 8192;
781                                event.Param.Pitch.Channel = channel;
782                              break;                              break;
783                            case VirtualMidiDevice::EVENT_TYPE_PROGRAM:
784                                SendProgramChange(devEvent.Arg1);
785                                continue; // don't push this event into FIFO
786                          default:                          default:
787                              std::cerr << "AbstractEngineChannel::ImportEvents() ERROR: unknown event type ("                              std::cerr << "AbstractEngineChannel::ImportEvents() ERROR: unknown event type ("
788                                        << devEvent.Type << "). This is a bug!";                                        << devEvent.Type << "). This is a bug!";
# Line 699  namespace LinuxSampler { Line 814  namespace LinuxSampler {
814                  pEvent->ResetFragmentPos();                  pEvent->ResetFragmentPos();
815                  break;                  break;
816              }              }
             // copy event to internal event list  
817              if (pEvents->poolIsEmpty()) {              if (pEvents->poolIsEmpty()) {
818                  dmsg(1,("Event pool emtpy!\n"));                  dmsg(1,("Event pool emtpy!\n"));
819                  break;                  break;
820              }              }
821                // apply transpose setting to (note on/off) event
822                if (!applyTranspose(pEvent))
823                    continue; // it's a note event which has a note value out of range, so drop this event
824                // assign a new note to this event (if its a note-on event)
825                if (pEvent->Type == Event::type_note_on)
826                    if (!pEngine->LaunchNewNote(this, pEvent))
827                        continue; // failed launching new note, so drop this event
828                // copy event to internal event list
829              *pEvents->allocAppend() = *pEvent;              *pEvents->allocAppend() = *pEvent;
830          }          }
831          eventQueueReader.free(); // free all copied events from input queue          eventQueueReader.free(); // free all copied events from input queue
832      }      }
833    
834        /**
835         * Called by real-time instrument script functions to schedule a new event
836         * @a delay microseconds in future.
837         *
838         * @b IMPORTANT: for the supplied @a delay to be scheduled correctly, the
839         * passed @a pEvent must be assigned a valid fragment time within the
840         * current audio fragment boundaries. That fragment time will be used by
841         * this method as basis for interpreting what "now" acutally is, and thus
842         * it will be used as basis for calculating the precise scheduling time
843         * for @a delay. The easiest way to achieve this is by copying a recent
844         * event which happened within the current audio fragment cycle: i.e. the
845         * original event which caused calling this method here.
846         *
847         * @param pEvent - event to be scheduled in future (event data will be copied)
848         * @param delay - amount of microseconds in future (from now) when event shall be processed
849         * @returns unique event ID of scheduled new event, or NULL on error
850         */
851        event_id_t AbstractEngineChannel::ScheduleEventMicroSec(const Event* pEvent, int delay) {
852            dmsg(3,("AbstractEngineChannel::ScheduleEventMicroSec(Event.Type=%d,delay=%d)\n", pEvent->Type, delay));
853            RTList<Event>::Iterator itEvent = pEvents->allocAppend();
854            if (!itEvent) {
855                dmsg(1,("AbstractEngineChannel::ScheduleEventMicroSec(): Event pool emtpy!\n"));
856                return 0;
857            }
858            RTList<ScheduledEvent>::Iterator itNode = delayedEvents.schedulerNodes.allocAppend();
859            if (!itNode) { // scheduler node pool empty ...
860                dmsg(1,("AbstractEngineChannel::ScheduleEventMicroSec(): ScheduledEvent pool empty!\n"));
861                pEvents->free(itEvent);
862                return 0;
863            }
864            // copy passed event
865            *itEvent = *pEvent;
866            // move copied event to list of delayed events
867            itEvent = itEvent.moveToEndOf(delayedEvents.pList);
868            // connect scheduler node with the copied event
869            itNode->itEvent = itEvent;
870            // add entry to time sorted scheduler queue for copied event
871            pEngine->pEventGenerator->scheduleAheadMicroSec(
872                delayedEvents.queue, *itNode, itEvent->FragmentPos(), delay
873            );
874            //dmsg(5,("ScheduledEvent queue size: %d\n", delayedEvents.queue.size()));
875            return pEvents->getID(itEvent);
876        }
877    
878        /**
879         * Called by real-time instrument script functions to ignore the event
880         * reflected by given event ID. The event will be freed immediately to its
881         * pool and cannot be dereferenced by its old ID anymore. Even if its
882         * allocated back from the Pool later on, it will have a different ID.
883         *
884         * @param id - unique ID of event to be dropped
885         */
886        void AbstractEngineChannel::IgnoreEvent(event_id_t id) {
887            RTList<Event>::Iterator it = pEvents->fromID(id);
888            if (it) pEvents->free(it);
889        }
890    
891        /** @brief Drop the requested event.
892         *
893         * Called by real-time instrument script functions to ignore the event
894         * reflected by the given event @a id. This method detects whether the
895         * passed ID is actually a @c Note ID or a regular @c Event ID and act
896         * accordingly.
897         *
898         * @param id - event id (from script scope)
899         * @see ScriptID
900         */
901        void AbstractEngineChannel::IgnoreEventByScriptID(const ScriptID& id) {
902            switch (id.type()) {
903                case ScriptID::EVENT:
904                    IgnoreEvent( id.eventID() );
905                    break;
906                case ScriptID::NOTE:
907                    IgnoreNote( id.noteID() );
908                    break;
909            }
910        }
911    
912      FxSend* AbstractEngineChannel::AddFxSend(uint8_t MidiCtrl, String Name) throw (Exception) {      FxSend* AbstractEngineChannel::AddFxSend(uint8_t MidiCtrl, String Name) throw (Exception) {
913          if (pEngine) pEngine->DisableAndLock();          if (pEngine) pEngine->DisableAndLock();
914          FxSend* pFxSend = new FxSend(this, MidiCtrl, Name);          FxSend* pFxSend = new FxSend(this, MidiCtrl, Name);
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