/[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 1039 by persson, Sat Feb 3 20:46:44 2007 UTC revision 1761 by iliev, Fri Aug 29 15:42:06 2008 UTC
# Line 3  Line 3 
3   *   LinuxSampler - modular, streaming capable sampler                     *   *   LinuxSampler - modular, streaming capable sampler                     *
4   *                                                                         *   *                                                                         *
5   *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *   *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *
6   *   Copyright (C) 2005, 2006 Christian Schoenebeck                        *   *   Copyright (C) 2005 - 2008 Christian Schoenebeck                       *
7   *                                                                         *   *                                                                         *
8   *   This program is free software; you can redistribute it and/or modify  *   *   This program is free software; you can redistribute it and/or modify  *
9   *   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 23  Line 23 
23    
24  #include "EngineChannel.h"  #include "EngineChannel.h"
25    
26    #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),
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 57  namespace LinuxSampler { namespace gig { Line 64  namespace LinuxSampler { namespace gig {
64    
65      EngineChannel::~EngineChannel() {      EngineChannel::~EngineChannel() {
66          DisconnectAudioOutputDevice();          DisconnectAudioOutputDevice();
         if (pInstrument) Engine::instruments.HandBack(pInstrument, this);  
67          if (pEventQueue) delete pEventQueue;          if (pEventQueue) delete pEventQueue;
68          if (pActiveKeys) delete pActiveKeys;          if (pActiveKeys) delete pActiveKeys;
69          if (pMIDIKeyInfo) delete[] pMIDIKeyInfo;          if (pMIDIKeyInfo) delete[] pMIDIKeyInfo;
# Line 159  namespace LinuxSampler { namespace gig { Line 165  namespace LinuxSampler { namespace gig {
165       * This method will then actually start to load the instrument and block       * This method will then actually start to load the instrument and block
166       * the calling thread until loading was completed.       * the calling thread until loading was completed.
167       *       *
      * @returns detailed description of the method call result  
168       * @see PrepareLoadInstrument()       * @see PrepareLoadInstrument()
169       */       */
170      void EngineChannel::LoadInstrument() {      void EngineChannel::LoadInstrument() {
171          ::gig::Instrument* oldInstrument = pInstrument;          // make sure we don't trigger any new notes with an old
172            // instrument
173          // free old instrument          instrument_change_command_t& cmd = ChangeInstrument(0);
174          if (oldInstrument) {          if (cmd.pInstrument) {
175              if (pEngine) {              // give old instrument back to instrument manager, but
176                  // make sure we don't trigger any new notes with the              // keep the dimension regions and samples that are in use
177                  // old instrument              Engine::instruments.HandBackInstrument(cmd.pInstrument, this, cmd.pDimRegionsInUse);
                 ::gig::DimensionRegion** dimRegionsInUse = pEngine->ChangeInstrument(this, 0);  
   
                 // give old instrument back to instrument manager, but  
                 // keep the dimension regions and samples that are in  
                 // use  
                 Engine::instruments.HandBackInstrument(oldInstrument, this, dimRegionsInUse);  
             } else {  
                 Engine::instruments.HandBack(oldInstrument, this);  
             }  
178          }          }
179            cmd.pDimRegionsInUse->clear();
180    
181          // delete all key groups          // delete all key groups
182          ActiveKeyGroups.clear();          ActiveKeyGroups.clear();
# Line 192  namespace LinuxSampler { namespace gig { Line 189  namespace LinuxSampler { namespace gig {
189              instrid.Index     = InstrumentIdx;              instrid.Index     = InstrumentIdx;
190              newInstrument = Engine::instruments.Borrow(instrid, this);              newInstrument = Engine::instruments.Borrow(instrid, this);
191              if (!newInstrument) {              if (!newInstrument) {
192                  InstrumentStat = -1;                  throw InstrumentManagerException("resource was not created");
                 dmsg(1,("no instrument loaded!!!\n"));  
                 exit(EXIT_FAILURE);  
193              }              }
194          }          }
195          catch (RIFF::Exception e) {          catch (RIFF::Exception e) {
196              InstrumentStat = -2;              InstrumentStat = -2;
197                StatusChanged(true);
198              String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message;              String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message;
199              throw Exception(msg);              throw Exception(msg);
200          }          }
201          catch (InstrumentResourceManagerException e) {          catch (InstrumentManagerException e) {
202              InstrumentStat = -3;              InstrumentStat = -3;
203                StatusChanged(true);
204              String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message();              String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message();
205              throw Exception(msg);              throw Exception(msg);
206          }          }
207          catch (...) {          catch (...) {
208              InstrumentStat = -4;              InstrumentStat = -4;
209                StatusChanged(true);
210              throw Exception("gig::Engine error: Failed to load instrument, cause: Unknown exception while trying to parse gig file.");              throw Exception("gig::Engine error: Failed to load instrument, cause: Unknown exception while trying to parse gig file.");
211          }          }
212    
# Line 219  namespace LinuxSampler { namespace gig { Line 217  namespace LinuxSampler { namespace gig {
217          InstrumentIdxName = newInstrument->pInfo->Name;          InstrumentIdxName = newInstrument->pInfo->Name;
218          InstrumentStat = 100;          InstrumentStat = 100;
219    
220          if (pEngine) pEngine->ChangeInstrument(this, newInstrument);          ChangeInstrument(newInstrument);
221          else pInstrument = newInstrument;  
222            StatusChanged(true);
223        }
224    
225    
226        /**
227         * Changes the instrument for an engine channel.
228         *
229         * @param pInstrument - new instrument
230         * @returns the resulting instrument change command after the
231         *          command switch, containing the old instrument and
232         *          the dimregions it is using
233         */
234        EngineChannel::instrument_change_command_t& EngineChannel::ChangeInstrument(::gig::Instrument* pInstrument) {
235            instrument_change_command_t& cmd = InstrumentChangeCommand.GetConfigForUpdate();
236            cmd.pInstrument = pInstrument;
237            cmd.bChangeInstrument = true;
238    
239            return InstrumentChangeCommand.SwitchConfig();
240      }      }
241    
242      /**      /**
# Line 265  namespace LinuxSampler { namespace gig { Line 281  namespace LinuxSampler { namespace gig {
281          pEngine = Engine::AcquireEngine(this, pAudioOut);          pEngine = Engine::AcquireEngine(this, pAudioOut);
282          ResetInternal();          ResetInternal();
283          pEvents = new RTList<Event>(pEngine->pEventPool);          pEvents = new RTList<Event>(pEngine->pEventPool);
284    
285            // reset the instrument change command struct (need to be done
286            // twice, as it is double buffered)
287            {
288                instrument_change_command_t& cmd = InstrumentChangeCommand.GetConfigForUpdate();
289                cmd.pDimRegionsInUse = new RTList< ::gig::DimensionRegion*>(pEngine->pDimRegionPool[0]);
290                cmd.pInstrument = 0;
291                cmd.bChangeInstrument = false;
292            }
293            {
294                instrument_change_command_t& cmd = InstrumentChangeCommand.SwitchConfig();
295                cmd.pDimRegionsInUse = new RTList< ::gig::DimensionRegion*>(pEngine->pDimRegionPool[1]);
296                cmd.pInstrument = 0;
297                cmd.bChangeInstrument = false;
298            }
299    
300          for (uint i = 0; i < 128; i++) {          for (uint i = 0; i < 128; i++) {
301              pMIDIKeyInfo[i].pActiveVoices = new RTList<Voice>(pEngine->pVoicePool);              pMIDIKeyInfo[i].pActiveVoices = new RTList<Voice>(pEngine->pVoicePool);
302              pMIDIKeyInfo[i].pEvents       = new RTList<Event>(pEngine->pEventPool);              pMIDIKeyInfo[i].pEvents       = new RTList<Event>(pEngine->pEventPool);
# Line 287  namespace LinuxSampler { namespace gig { Line 319  namespace LinuxSampler { namespace gig {
319    
320      void EngineChannel::DisconnectAudioOutputDevice() {      void EngineChannel::DisconnectAudioOutputDevice() {
321          if (pEngine) { // if clause to prevent disconnect loops          if (pEngine) { // if clause to prevent disconnect loops
322    
323                // delete the structures used for instrument change
324                RTList< ::gig::DimensionRegion*>* d = InstrumentChangeCommand.GetConfigForUpdate().pDimRegionsInUse;
325                if (d) delete d;
326                EngineChannel::instrument_change_command_t& cmd = InstrumentChangeCommand.SwitchConfig();
327                d = cmd.pDimRegionsInUse;
328    
329                if (cmd.pInstrument) {
330                    // release the currently loaded instrument
331                    Engine::instruments.HandBackInstrument(cmd.pInstrument, this, d);
332                }
333    
334                if (d) delete d;
335    
336                // release all active dimension regions to resource
337                // manager
338                RTList<uint>::Iterator iuiKey = pActiveKeys->first();
339                RTList<uint>::Iterator end    = pActiveKeys->end();
340                while (iuiKey != end) { // iterate through all active keys
341                    midi_key_info_t* pKey = &pMIDIKeyInfo[*iuiKey];
342                    ++iuiKey;
343    
344                    RTList<Voice>::Iterator itVoice     = pKey->pActiveVoices->first();
345                    RTList<Voice>::Iterator itVoicesEnd = pKey->pActiveVoices->end();
346                    for (; itVoice != itVoicesEnd; ++itVoice) { // iterate through all voices on this key
347                        Engine::instruments.HandBackDimReg(itVoice->pDimRgn);
348                    }
349                }
350    
351              ResetInternal();              ResetInternal();
352              if (pEvents) {              if (pEvents) {
353                  delete pEvents;                  delete pEvents;
# Line 338  namespace LinuxSampler { namespace gig { Line 399  namespace LinuxSampler { namespace gig {
399              default:              default:
400                  throw AudioOutputException("Invalid engine audio channel " + ToString(EngineAudioChannel));                  throw AudioOutputException("Invalid engine audio channel " + ToString(EngineAudioChannel));
401          }          }
402    
403            bStatusChanged = true;
404      }      }
405    
406      int EngineChannel::OutputChannel(uint EngineAudioChannel) {      int EngineChannel::OutputChannel(uint EngineAudioChannel) {
# Line 390  namespace LinuxSampler { namespace gig { Line 453  namespace LinuxSampler { namespace gig {
453          }          }
454          fxSends.push_back(pFxSend);          fxSends.push_back(pFxSend);
455          if (pEngine) pEngine->Enable();          if (pEngine) pEngine->Enable();
456            fireFxSendCountChanged(GetSamplerChannel()->Index(), GetFxSendCount());
457    
458          return pFxSend;          return pFxSend;
459      }      }
460    
# Line 427  namespace LinuxSampler { namespace gig { Line 492  namespace LinuxSampler { namespace gig {
492              }              }
493          }          }
494          if (pEngine) pEngine->Enable();          if (pEngine) pEngine->Enable();
495            fireFxSendCountChanged(GetSamplerChannel()->Index(), GetFxSendCount());
496      }      }
497    
498      /**      /**
# Line 447  namespace LinuxSampler { namespace gig { Line 513  namespace LinuxSampler { namespace gig {
513              event.pEngineChannel      = this;              event.pEngineChannel      = this;
514              if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);              if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
515              else dmsg(1,("EngineChannel: Input event queue full!"));              else dmsg(1,("EngineChannel: Input event queue full!"));
516                // inform connected virtual MIDI devices if any ...
517                // (e.g. virtual MIDI keyboard in instrument editor(s))
518                ArrayList<VirtualMidiDevice*>& devices =
519                    const_cast<ArrayList<VirtualMidiDevice*>&>(
520                        virtualMidiDevicesReader_MidiThread.Lock()
521                    );
522                for (int i = 0; i < devices.size(); i++) {
523                    devices[i]->SendNoteOnToDevice(Key, Velocity);
524                }
525                virtualMidiDevicesReader_MidiThread.Unlock();
526          }          }
527      }      }
528    
# Line 473  namespace LinuxSampler { namespace gig { Line 549  namespace LinuxSampler { namespace gig {
549              event.pEngineChannel      = this;              event.pEngineChannel      = this;
550              if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);              if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
551              else dmsg(1,("EngineChannel: Input event queue full!"));              else dmsg(1,("EngineChannel: Input event queue full!"));
552                // inform connected virtual MIDI devices if any ...
553                // (e.g. virtual MIDI keyboard in instrument editor(s))
554                ArrayList<VirtualMidiDevice*>& devices =
555                    const_cast<ArrayList<VirtualMidiDevice*>&>(
556                        virtualMidiDevicesReader_MidiThread.Lock()
557                    );
558                for (int i = 0; i < devices.size(); i++) {
559                    devices[i]->SendNoteOnToDevice(Key, Velocity);
560                }
561                virtualMidiDevicesReader_MidiThread.Unlock();
562          }          }
563      }      }
564    
# Line 494  namespace LinuxSampler { namespace gig { Line 580  namespace LinuxSampler { namespace gig {
580              event.pEngineChannel      = this;              event.pEngineChannel      = this;
581              if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);              if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
582              else dmsg(1,("EngineChannel: Input event queue full!"));              else dmsg(1,("EngineChannel: Input event queue full!"));
583                // inform connected virtual MIDI devices if any ...
584                // (e.g. virtual MIDI keyboard in instrument editor(s))
585                ArrayList<VirtualMidiDevice*>& devices =
586                    const_cast<ArrayList<VirtualMidiDevice*>&>(
587                        virtualMidiDevicesReader_MidiThread.Lock()
588                    );
589                for (int i = 0; i < devices.size(); i++) {
590                    devices[i]->SendNoteOffToDevice(Key, Velocity);
591                }
592                virtualMidiDevicesReader_MidiThread.Unlock();
593          }          }
594      }      }
595    
# Line 520  namespace LinuxSampler { namespace gig { Line 616  namespace LinuxSampler { namespace gig {
616              event.pEngineChannel      = this;              event.pEngineChannel      = this;
617              if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);              if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
618              else dmsg(1,("EngineChannel: Input event queue full!"));              else dmsg(1,("EngineChannel: Input event queue full!"));
619                // inform connected virtual MIDI devices if any ...
620                // (e.g. virtual MIDI keyboard in instrument editor(s))
621                ArrayList<VirtualMidiDevice*>& devices =
622                    const_cast<ArrayList<VirtualMidiDevice*>&>(
623                        virtualMidiDevicesReader_MidiThread.Lock()
624                    );
625                for (int i = 0; i < devices.size(); i++) {
626                    devices[i]->SendNoteOffToDevice(Key, Velocity);
627                }
628                virtualMidiDevicesReader_MidiThread.Unlock();
629          }          }
630      }      }
631    
# Line 633  namespace LinuxSampler { namespace gig { Line 739  namespace LinuxSampler { namespace gig {
739          MidiVolume     = 1.0;          MidiVolume     = 1.0;
740          GlobalPanLeft  = 1.0f;          GlobalPanLeft  = 1.0f;
741          GlobalPanRight = 1.0f;          GlobalPanRight = 1.0f;
742            iLastPanRequest = 64;
743            GlobalTranspose = 0;
744          // set all MIDI controller values to zero          // set all MIDI controller values to zero
745          memset(ControllerTable, 0x00, 129);          memset(ControllerTable, 0x00, 129);
746            // reset all FX Send levels
747            for (
748                std::vector<FxSend*>::iterator iter = fxSends.begin();
749                iter != fxSends.end(); iter++
750            ) {
751                (*iter)->Reset();
752            }
753      }      }
754    
755      /**      /**
# Line 651  namespace LinuxSampler { namespace gig { Line 766  namespace LinuxSampler { namespace gig {
766       *                  current audio cycle       *                  current audio cycle
767       */       */
768      void EngineChannel::ImportEvents(uint Samples) {      void EngineChannel::ImportEvents(uint Samples) {
769            // import events from pure software MIDI "devices"
770            // (e.g. virtual keyboard in instrument editor)
771            {
772                const int FragmentPos = 0; // randomly chosen, we don't care about jitter for virtual MIDI devices
773                Event event = pEngine->pEventGenerator->CreateEvent(FragmentPos);
774                VirtualMidiDevice::event_t devEvent; // the event format we get from the virtual MIDI device
775                // as we're going to (carefully) write some status to the
776                // synchronized struct, we cast away the const
777                ArrayList<VirtualMidiDevice*>& devices =
778                    const_cast<ArrayList<VirtualMidiDevice*>&>(virtualMidiDevicesReader_AudioThread.Lock());
779                // iterate through all virtual MIDI devices
780                for (int i = 0; i < devices.size(); i++) {
781                    VirtualMidiDevice* pDev = devices[i];
782                    // I think we can simply flush the whole FIFO(s), the user shouldn't be so fast ;-)
783                    while (pDev->GetMidiEventFromDevice(devEvent)) {
784                        event.Type =
785                            (devEvent.Type == VirtualMidiDevice::EVENT_TYPE_NOTEON) ?
786                                Event::type_note_on : Event::type_note_off;
787                        event.Param.Note.Key      = devEvent.Key;
788                        event.Param.Note.Velocity = devEvent.Velocity;
789                        event.pEngineChannel      = this;
790                        // copy event to internal event list
791                        if (pEvents->poolIsEmpty()) {
792                            dmsg(1,("Event pool emtpy!\n"));
793                            goto exitVirtualDevicesLoop;
794                        }
795                        *pEvents->allocAppend() = event;
796                    }
797                }
798            }
799            exitVirtualDevicesLoop:
800            virtualMidiDevicesReader_AudioThread.Unlock();
801    
802            // import events from the regular MIDI devices
803          RingBuffer<Event,false>::NonVolatileReader eventQueueReader = pEventQueue->get_non_volatile_reader();          RingBuffer<Event,false>::NonVolatileReader eventQueueReader = pEventQueue->get_non_volatile_reader();
804          Event* pEvent;          Event* pEvent;
805          while (true) {          while (true) {
# Line 688  namespace LinuxSampler { namespace gig { Line 837  namespace LinuxSampler { namespace gig {
837                  if (pEngine && pEngine->pAudioOutputDevice) {                  if (pEngine && pEngine->pAudioOutputDevice) {
838                      // fallback to render directly to the AudioOutputDevice's buffer                      // fallback to render directly to the AudioOutputDevice's buffer
839                      pChannelRight = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelRight);                      pChannelRight = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelRight);
840                  } else pChannelRight = NULL;                  } else pChannelRight = NULL;
841              }              }
842          }          }
843          for (int i = 0; i < fxSends.size(); i++) delete fxSends[i];          for (int i = 0; i < fxSends.size(); i++) delete fxSends[i];
# Line 696  namespace LinuxSampler { namespace gig { Line 845  namespace LinuxSampler { namespace gig {
845          if (pEngine) pEngine->Enable();          if (pEngine) pEngine->Enable();
846      }      }
847    
848        void EngineChannel::Connect(VirtualMidiDevice* pDevice) {
849            // double buffer ... double work ...
850            {
851                ArrayList<VirtualMidiDevice*>& devices = virtualMidiDevices.GetConfigForUpdate();
852                devices.add(pDevice);
853            }
854            {
855                ArrayList<VirtualMidiDevice*>& devices = virtualMidiDevices.SwitchConfig();
856                devices.add(pDevice);
857            }
858        }
859    
860        void EngineChannel::Disconnect(VirtualMidiDevice* pDevice) {
861            // double buffer ... double work ...
862            {
863                ArrayList<VirtualMidiDevice*>& devices = virtualMidiDevices.GetConfigForUpdate();
864                devices.remove(pDevice);
865            }
866            {
867                ArrayList<VirtualMidiDevice*>& devices = virtualMidiDevices.SwitchConfig();
868                devices.remove(pDevice);
869            }
870        }
871    
872      float EngineChannel::Volume() {      float EngineChannel::Volume() {
873          return GlobalVolume;          return GlobalVolume;
874      }      }
# Line 705  namespace LinuxSampler { namespace gig { Line 878  namespace LinuxSampler { namespace gig {
878          bStatusChanged = true; // status of engine channel has changed, so set notify flag          bStatusChanged = true; // status of engine channel has changed, so set notify flag
879      }      }
880    
881        float EngineChannel::Pan() {
882            return float(iLastPanRequest - 64) / 64.0f;
883        }
884    
885        void EngineChannel::Pan(float f) {
886            int iMidiPan = int(f * 64.0f) + 64;
887            if (iMidiPan > 127) iMidiPan = 127;
888            else if (iMidiPan < 0) iMidiPan = 0;
889            GlobalPanLeft  = Engine::PanCurve[128 - iMidiPan];
890            GlobalPanRight = Engine::PanCurve[iMidiPan];
891            iLastPanRequest = iMidiPan;
892        }
893    
894      uint EngineChannel::Channels() {      uint EngineChannel::Channels() {
895          return 2;          return 2;
896      }      }
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