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

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revision 1646 by persson, Sun Jan 20 15:04:51 2008 UTC revision 1826 by iliev, Sat Jan 24 14:32:35 2009 UTC
# Line 24  Line 24 
24  #include "EngineChannel.h"  #include "EngineChannel.h"
25    
26  #include "../../common/global_private.h"  #include "../../common/global_private.h"
27    #include "../../Sampler.h"
28    
29  namespace LinuxSampler { namespace gig {  namespace LinuxSampler { namespace gig {
30    
31      EngineChannel::EngineChannel() :      EngineChannel::EngineChannel() :
32          InstrumentChangeCommandReader(InstrumentChangeCommand) {          InstrumentChangeCommandReader(InstrumentChangeCommand),
33            virtualMidiDevicesReader_AudioThread(virtualMidiDevices),
34            virtualMidiDevicesReader_MidiThread(virtualMidiDevices)
35        {
36          pMIDIKeyInfo = new midi_key_info_t[128];          pMIDIKeyInfo = new midi_key_info_t[128];
37          pEngine      = NULL;          pEngine      = NULL;
38          pInstrument  = NULL;          pInstrument  = NULL;
# Line 60  namespace LinuxSampler { namespace gig { Line 64  namespace LinuxSampler { namespace gig {
64    
65      EngineChannel::~EngineChannel() {      EngineChannel::~EngineChannel() {
66          DisconnectAudioOutputDevice();          DisconnectAudioOutputDevice();
67    
68            // In case the channel was removed before the instrument was
69            // fully loaded, try to give back instrument again (see bug #113)
70            instrument_change_command_t& cmd = ChangeInstrument(NULL);
71            if (cmd.pInstrument) {
72                    Engine::instruments.HandBack(cmd.pInstrument, this);
73            }
74            ///////
75    
76          if (pEventQueue) delete pEventQueue;          if (pEventQueue) delete pEventQueue;
77          if (pActiveKeys) delete pActiveKeys;          if (pActiveKeys) delete pActiveKeys;
78          if (pMIDIKeyInfo) delete[] pMIDIKeyInfo;          if (pMIDIKeyInfo) delete[] pMIDIKeyInfo;
# Line 326  namespace LinuxSampler { namespace gig { Line 339  namespace LinuxSampler { namespace gig {
339                  // release the currently loaded instrument                  // release the currently loaded instrument
340                  Engine::instruments.HandBackInstrument(cmd.pInstrument, this, d);                  Engine::instruments.HandBackInstrument(cmd.pInstrument, this, d);
341              }              }
342    
343              if (d) delete d;              if (d) delete d;
344    
345              // release all active dimension regions to resource              // release all active dimension regions to resource
# Line 448  namespace LinuxSampler { namespace gig { Line 462  namespace LinuxSampler { namespace gig {
462          }          }
463          fxSends.push_back(pFxSend);          fxSends.push_back(pFxSend);
464          if (pEngine) pEngine->Enable();          if (pEngine) pEngine->Enable();
465          fireFxSendCountChanged(iSamplerChannelIndex, GetFxSendCount());          fireFxSendCountChanged(GetSamplerChannel()->Index(), GetFxSendCount());
466    
467          return pFxSend;          return pFxSend;
468      }      }
# Line 487  namespace LinuxSampler { namespace gig { Line 501  namespace LinuxSampler { namespace gig {
501              }              }
502          }          }
503          if (pEngine) pEngine->Enable();          if (pEngine) pEngine->Enable();
504          fireFxSendCountChanged(iSamplerChannelIndex, GetFxSendCount());          fireFxSendCountChanged(GetSamplerChannel()->Index(), GetFxSendCount());
505      }      }
506    
507      /**      /**
# Line 508  namespace LinuxSampler { namespace gig { Line 522  namespace LinuxSampler { namespace gig {
522              event.pEngineChannel      = this;              event.pEngineChannel      = this;
523              if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);              if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
524              else dmsg(1,("EngineChannel: Input event queue full!"));              else dmsg(1,("EngineChannel: Input event queue full!"));
525                // inform connected virtual MIDI devices if any ...
526                // (e.g. virtual MIDI keyboard in instrument editor(s))
527                ArrayList<VirtualMidiDevice*>& devices =
528                    const_cast<ArrayList<VirtualMidiDevice*>&>(
529                        virtualMidiDevicesReader_MidiThread.Lock()
530                    );
531                for (int i = 0; i < devices.size(); i++) {
532                    devices[i]->SendNoteOnToDevice(Key, Velocity);
533                }
534                virtualMidiDevicesReader_MidiThread.Unlock();
535          }          }
536      }      }
537    
# Line 534  namespace LinuxSampler { namespace gig { Line 558  namespace LinuxSampler { namespace gig {
558              event.pEngineChannel      = this;              event.pEngineChannel      = this;
559              if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);              if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
560              else dmsg(1,("EngineChannel: Input event queue full!"));              else dmsg(1,("EngineChannel: Input event queue full!"));
561                // inform connected virtual MIDI devices if any ...
562                // (e.g. virtual MIDI keyboard in instrument editor(s))
563                ArrayList<VirtualMidiDevice*>& devices =
564                    const_cast<ArrayList<VirtualMidiDevice*>&>(
565                        virtualMidiDevicesReader_MidiThread.Lock()
566                    );
567                for (int i = 0; i < devices.size(); i++) {
568                    devices[i]->SendNoteOnToDevice(Key, Velocity);
569                }
570                virtualMidiDevicesReader_MidiThread.Unlock();
571          }          }
572      }      }
573    
# Line 555  namespace LinuxSampler { namespace gig { Line 589  namespace LinuxSampler { namespace gig {
589              event.pEngineChannel      = this;              event.pEngineChannel      = this;
590              if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);              if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
591              else dmsg(1,("EngineChannel: Input event queue full!"));              else dmsg(1,("EngineChannel: Input event queue full!"));
592                // inform connected virtual MIDI devices if any ...
593                // (e.g. virtual MIDI keyboard in instrument editor(s))
594                ArrayList<VirtualMidiDevice*>& devices =
595                    const_cast<ArrayList<VirtualMidiDevice*>&>(
596                        virtualMidiDevicesReader_MidiThread.Lock()
597                    );
598                for (int i = 0; i < devices.size(); i++) {
599                    devices[i]->SendNoteOffToDevice(Key, Velocity);
600                }
601                virtualMidiDevicesReader_MidiThread.Unlock();
602          }          }
603      }      }
604    
# Line 581  namespace LinuxSampler { namespace gig { Line 625  namespace LinuxSampler { namespace gig {
625              event.pEngineChannel      = this;              event.pEngineChannel      = this;
626              if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);              if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
627              else dmsg(1,("EngineChannel: Input event queue full!"));              else dmsg(1,("EngineChannel: Input event queue full!"));
628                // inform connected virtual MIDI devices if any ...
629                // (e.g. virtual MIDI keyboard in instrument editor(s))
630                ArrayList<VirtualMidiDevice*>& devices =
631                    const_cast<ArrayList<VirtualMidiDevice*>&>(
632                        virtualMidiDevicesReader_MidiThread.Lock()
633                    );
634                for (int i = 0; i < devices.size(); i++) {
635                    devices[i]->SendNoteOffToDevice(Key, Velocity);
636                }
637                virtualMidiDevicesReader_MidiThread.Unlock();
638          }          }
639      }      }
640    
# Line 694  namespace LinuxSampler { namespace gig { Line 748  namespace LinuxSampler { namespace gig {
748          MidiVolume     = 1.0;          MidiVolume     = 1.0;
749          GlobalPanLeft  = 1.0f;          GlobalPanLeft  = 1.0f;
750          GlobalPanRight = 1.0f;          GlobalPanRight = 1.0f;
751            iLastPanRequest = 64;
752          GlobalTranspose = 0;          GlobalTranspose = 0;
753          // set all MIDI controller values to zero          // set all MIDI controller values to zero
754          memset(ControllerTable, 0x00, 129);          memset(ControllerTable, 0x00, 129);
# Line 720  namespace LinuxSampler { namespace gig { Line 775  namespace LinuxSampler { namespace gig {
775       *                  current audio cycle       *                  current audio cycle
776       */       */
777      void EngineChannel::ImportEvents(uint Samples) {      void EngineChannel::ImportEvents(uint Samples) {
778            // import events from pure software MIDI "devices"
779            // (e.g. virtual keyboard in instrument editor)
780            {
781                const int FragmentPos = 0; // randomly chosen, we don't care about jitter for virtual MIDI devices
782                Event event = pEngine->pEventGenerator->CreateEvent(FragmentPos);
783                VirtualMidiDevice::event_t devEvent; // the event format we get from the virtual MIDI device
784                // as we're going to (carefully) write some status to the
785                // synchronized struct, we cast away the const
786                ArrayList<VirtualMidiDevice*>& devices =
787                    const_cast<ArrayList<VirtualMidiDevice*>&>(virtualMidiDevicesReader_AudioThread.Lock());
788                // iterate through all virtual MIDI devices
789                for (int i = 0; i < devices.size(); i++) {
790                    VirtualMidiDevice* pDev = devices[i];
791                    // I think we can simply flush the whole FIFO(s), the user shouldn't be so fast ;-)
792                    while (pDev->GetMidiEventFromDevice(devEvent)) {
793                        event.Type =
794                            (devEvent.Type == VirtualMidiDevice::EVENT_TYPE_NOTEON) ?
795                                Event::type_note_on : Event::type_note_off;
796                        event.Param.Note.Key      = devEvent.Key;
797                        event.Param.Note.Velocity = devEvent.Velocity;
798                        event.pEngineChannel      = this;
799                        // copy event to internal event list
800                        if (pEvents->poolIsEmpty()) {
801                            dmsg(1,("Event pool emtpy!\n"));
802                            goto exitVirtualDevicesLoop;
803                        }
804                        *pEvents->allocAppend() = event;
805                    }
806                }
807            }
808            exitVirtualDevicesLoop:
809            virtualMidiDevicesReader_AudioThread.Unlock();
810    
811            // import events from the regular MIDI devices
812          RingBuffer<Event,false>::NonVolatileReader eventQueueReader = pEventQueue->get_non_volatile_reader();          RingBuffer<Event,false>::NonVolatileReader eventQueueReader = pEventQueue->get_non_volatile_reader();
813          Event* pEvent;          Event* pEvent;
814          while (true) {          while (true) {
# Line 765  namespace LinuxSampler { namespace gig { Line 854  namespace LinuxSampler { namespace gig {
854          if (pEngine) pEngine->Enable();          if (pEngine) pEngine->Enable();
855      }      }
856    
857        void EngineChannel::Connect(VirtualMidiDevice* pDevice) {
858            // double buffer ... double work ...
859            {
860                ArrayList<VirtualMidiDevice*>& devices = virtualMidiDevices.GetConfigForUpdate();
861                devices.add(pDevice);
862            }
863            {
864                ArrayList<VirtualMidiDevice*>& devices = virtualMidiDevices.SwitchConfig();
865                devices.add(pDevice);
866            }
867        }
868    
869        void EngineChannel::Disconnect(VirtualMidiDevice* pDevice) {
870            // double buffer ... double work ...
871            {
872                ArrayList<VirtualMidiDevice*>& devices = virtualMidiDevices.GetConfigForUpdate();
873                devices.remove(pDevice);
874            }
875            {
876                ArrayList<VirtualMidiDevice*>& devices = virtualMidiDevices.SwitchConfig();
877                devices.remove(pDevice);
878            }
879        }
880    
881      float EngineChannel::Volume() {      float EngineChannel::Volume() {
882          return GlobalVolume;          return GlobalVolume;
883      }      }
# Line 774  namespace LinuxSampler { namespace gig { Line 887  namespace LinuxSampler { namespace gig {
887          bStatusChanged = true; // status of engine channel has changed, so set notify flag          bStatusChanged = true; // status of engine channel has changed, so set notify flag
888      }      }
889    
890        float EngineChannel::Pan() {
891            return float(iLastPanRequest - 64) / 64.0f;
892        }
893    
894        void EngineChannel::Pan(float f) {
895            int iMidiPan = int(f * 64.0f) + 64;
896            if (iMidiPan > 127) iMidiPan = 127;
897            else if (iMidiPan < 0) iMidiPan = 0;
898            GlobalPanLeft  = Engine::PanCurve[128 - iMidiPan];
899            GlobalPanRight = Engine::PanCurve[iMidiPan];
900            iLastPanRequest = iMidiPan;
901        }
902    
903      uint EngineChannel::Channels() {      uint EngineChannel::Channels() {
904          return 2;          return 2;
905      }      }
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