/[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 1723 by schoenebeck, Sun Apr 20 08:53:39 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    
28  namespace LinuxSampler { namespace gig {  namespace LinuxSampler { namespace gig {
29    
30      EngineChannel::EngineChannel() {      EngineChannel::EngineChannel() :
31            InstrumentChangeCommandReader(InstrumentChangeCommand),
32            virtualMidiDevicesReader_AudioThread(virtualMidiDevices),
33            virtualMidiDevicesReader_MidiThread(virtualMidiDevices)
34        {
35          pMIDIKeyInfo = new midi_key_info_t[128];          pMIDIKeyInfo = new midi_key_info_t[128];
36          pEngine      = NULL;          pEngine      = NULL;
37          pInstrument  = NULL;          pInstrument  = NULL;
# Line 57  namespace LinuxSampler { namespace gig { Line 63  namespace LinuxSampler { namespace gig {
63    
64      EngineChannel::~EngineChannel() {      EngineChannel::~EngineChannel() {
65          DisconnectAudioOutputDevice();          DisconnectAudioOutputDevice();
         if (pInstrument) Engine::instruments.HandBack(pInstrument, this);  
66          if (pEventQueue) delete pEventQueue;          if (pEventQueue) delete pEventQueue;
67          if (pActiveKeys) delete pActiveKeys;          if (pActiveKeys) delete pActiveKeys;
68          if (pMIDIKeyInfo) delete[] pMIDIKeyInfo;          if (pMIDIKeyInfo) delete[] pMIDIKeyInfo;
# Line 159  namespace LinuxSampler { namespace gig { Line 164  namespace LinuxSampler { namespace gig {
164       * This method will then actually start to load the instrument and block       * This method will then actually start to load the instrument and block
165       * the calling thread until loading was completed.       * the calling thread until loading was completed.
166       *       *
      * @returns detailed description of the method call result  
167       * @see PrepareLoadInstrument()       * @see PrepareLoadInstrument()
168       */       */
169      void EngineChannel::LoadInstrument() {      void EngineChannel::LoadInstrument() {
170          ::gig::Instrument* oldInstrument = pInstrument;          // make sure we don't trigger any new notes with an old
171            // instrument
172          // free old instrument          instrument_change_command_t& cmd = ChangeInstrument(0);
173          if (oldInstrument) {          if (cmd.pInstrument) {
174              if (pEngine) {              // give old instrument back to instrument manager, but
175                  // make sure we don't trigger any new notes with the              // keep the dimension regions and samples that are in use
176                  // 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);  
             }  
177          }          }
178            cmd.pDimRegionsInUse->clear();
179    
180          // delete all key groups          // delete all key groups
181          ActiveKeyGroups.clear();          ActiveKeyGroups.clear();
# Line 192  namespace LinuxSampler { namespace gig { Line 188  namespace LinuxSampler { namespace gig {
188              instrid.Index     = InstrumentIdx;              instrid.Index     = InstrumentIdx;
189              newInstrument = Engine::instruments.Borrow(instrid, this);              newInstrument = Engine::instruments.Borrow(instrid, this);
190              if (!newInstrument) {              if (!newInstrument) {
191                  InstrumentStat = -1;                  throw InstrumentManagerException("resource was not created");
                 dmsg(1,("no instrument loaded!!!\n"));  
                 exit(EXIT_FAILURE);  
192              }              }
193          }          }
194          catch (RIFF::Exception e) {          catch (RIFF::Exception e) {
195              InstrumentStat = -2;              InstrumentStat = -2;
196                StatusChanged(true);
197              String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message;              String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message;
198              throw Exception(msg);              throw Exception(msg);
199          }          }
200          catch (InstrumentResourceManagerException e) {          catch (InstrumentManagerException e) {
201              InstrumentStat = -3;              InstrumentStat = -3;
202                StatusChanged(true);
203              String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message();              String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message();
204              throw Exception(msg);              throw Exception(msg);
205          }          }
206          catch (...) {          catch (...) {
207              InstrumentStat = -4;              InstrumentStat = -4;
208                StatusChanged(true);
209              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.");
210          }          }
211    
# Line 219  namespace LinuxSampler { namespace gig { Line 216  namespace LinuxSampler { namespace gig {
216          InstrumentIdxName = newInstrument->pInfo->Name;          InstrumentIdxName = newInstrument->pInfo->Name;
217          InstrumentStat = 100;          InstrumentStat = 100;
218    
219          if (pEngine) pEngine->ChangeInstrument(this, newInstrument);          ChangeInstrument(newInstrument);
220          else pInstrument = newInstrument;  
221            StatusChanged(true);
222        }
223    
224    
225        /**
226         * Changes the instrument for an engine channel.
227         *
228         * @param pInstrument - new instrument
229         * @returns the resulting instrument change command after the
230         *          command switch, containing the old instrument and
231         *          the dimregions it is using
232         */
233        EngineChannel::instrument_change_command_t& EngineChannel::ChangeInstrument(::gig::Instrument* pInstrument) {
234            instrument_change_command_t& cmd = InstrumentChangeCommand.GetConfigForUpdate();
235            cmd.pInstrument = pInstrument;
236            cmd.bChangeInstrument = true;
237    
238            return InstrumentChangeCommand.SwitchConfig();
239      }      }
240    
241      /**      /**
# Line 265  namespace LinuxSampler { namespace gig { Line 280  namespace LinuxSampler { namespace gig {
280          pEngine = Engine::AcquireEngine(this, pAudioOut);          pEngine = Engine::AcquireEngine(this, pAudioOut);
281          ResetInternal();          ResetInternal();
282          pEvents = new RTList<Event>(pEngine->pEventPool);          pEvents = new RTList<Event>(pEngine->pEventPool);
283    
284            // reset the instrument change command struct (need to be done
285            // twice, as it is double buffered)
286            {
287                instrument_change_command_t& cmd = InstrumentChangeCommand.GetConfigForUpdate();
288                cmd.pDimRegionsInUse = new RTList< ::gig::DimensionRegion*>(pEngine->pDimRegionPool[0]);
289                cmd.pInstrument = 0;
290                cmd.bChangeInstrument = false;
291            }
292            {
293                instrument_change_command_t& cmd = InstrumentChangeCommand.SwitchConfig();
294                cmd.pDimRegionsInUse = new RTList< ::gig::DimensionRegion*>(pEngine->pDimRegionPool[1]);
295                cmd.pInstrument = 0;
296                cmd.bChangeInstrument = false;
297            }
298    
299          for (uint i = 0; i < 128; i++) {          for (uint i = 0; i < 128; i++) {
300              pMIDIKeyInfo[i].pActiveVoices = new RTList<Voice>(pEngine->pVoicePool);              pMIDIKeyInfo[i].pActiveVoices = new RTList<Voice>(pEngine->pVoicePool);
301              pMIDIKeyInfo[i].pEvents       = new RTList<Event>(pEngine->pEventPool);              pMIDIKeyInfo[i].pEvents       = new RTList<Event>(pEngine->pEventPool);
# Line 287  namespace LinuxSampler { namespace gig { Line 318  namespace LinuxSampler { namespace gig {
318    
319      void EngineChannel::DisconnectAudioOutputDevice() {      void EngineChannel::DisconnectAudioOutputDevice() {
320          if (pEngine) { // if clause to prevent disconnect loops          if (pEngine) { // if clause to prevent disconnect loops
321    
322                // delete the structures used for instrument change
323                RTList< ::gig::DimensionRegion*>* d = InstrumentChangeCommand.GetConfigForUpdate().pDimRegionsInUse;
324                if (d) delete d;
325                EngineChannel::instrument_change_command_t& cmd = InstrumentChangeCommand.SwitchConfig();
326                d = cmd.pDimRegionsInUse;
327    
328                if (cmd.pInstrument) {
329                    // release the currently loaded instrument
330                    Engine::instruments.HandBackInstrument(cmd.pInstrument, this, d);
331                }
332                if (d) delete d;
333    
334                // release all active dimension regions to resource
335                // manager
336                RTList<uint>::Iterator iuiKey = pActiveKeys->first();
337                RTList<uint>::Iterator end    = pActiveKeys->end();
338                while (iuiKey != end) { // iterate through all active keys
339                    midi_key_info_t* pKey = &pMIDIKeyInfo[*iuiKey];
340                    ++iuiKey;
341    
342                    RTList<Voice>::Iterator itVoice     = pKey->pActiveVoices->first();
343                    RTList<Voice>::Iterator itVoicesEnd = pKey->pActiveVoices->end();
344                    for (; itVoice != itVoicesEnd; ++itVoice) { // iterate through all voices on this key
345                        Engine::instruments.HandBackDimReg(itVoice->pDimRgn);
346                    }
347                }
348    
349              ResetInternal();              ResetInternal();
350              if (pEvents) {              if (pEvents) {
351                  delete pEvents;                  delete pEvents;
# Line 338  namespace LinuxSampler { namespace gig { Line 397  namespace LinuxSampler { namespace gig {
397              default:              default:
398                  throw AudioOutputException("Invalid engine audio channel " + ToString(EngineAudioChannel));                  throw AudioOutputException("Invalid engine audio channel " + ToString(EngineAudioChannel));
399          }          }
400    
401            bStatusChanged = true;
402      }      }
403    
404      int EngineChannel::OutputChannel(uint EngineAudioChannel) {      int EngineChannel::OutputChannel(uint EngineAudioChannel) {
# Line 390  namespace LinuxSampler { namespace gig { Line 451  namespace LinuxSampler { namespace gig {
451          }          }
452          fxSends.push_back(pFxSend);          fxSends.push_back(pFxSend);
453          if (pEngine) pEngine->Enable();          if (pEngine) pEngine->Enable();
454            fireFxSendCountChanged(iSamplerChannelIndex, GetFxSendCount());
455    
456          return pFxSend;          return pFxSend;
457      }      }
458    
# Line 427  namespace LinuxSampler { namespace gig { Line 490  namespace LinuxSampler { namespace gig {
490              }              }
491          }          }
492          if (pEngine) pEngine->Enable();          if (pEngine) pEngine->Enable();
493            fireFxSendCountChanged(iSamplerChannelIndex, GetFxSendCount());
494      }      }
495    
496      /**      /**
# Line 447  namespace LinuxSampler { namespace gig { Line 511  namespace LinuxSampler { namespace gig {
511              event.pEngineChannel      = this;              event.pEngineChannel      = this;
512              if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);              if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
513              else dmsg(1,("EngineChannel: Input event queue full!"));              else dmsg(1,("EngineChannel: Input event queue full!"));
514                // inform connected virtual MIDI devices if any ...
515                // (e.g. virtual MIDI keyboard in instrument editor(s))
516                ArrayList<VirtualMidiDevice*>& devices =
517                    const_cast<ArrayList<VirtualMidiDevice*>&>(
518                        virtualMidiDevicesReader_MidiThread.Lock()
519                    );
520                for (int i = 0; i < devices.size(); i++) {
521                    devices[i]->SendNoteOnToDevice(Key, Velocity);
522                }
523                virtualMidiDevicesReader_MidiThread.Unlock();
524          }          }
525      }      }
526    
# Line 473  namespace LinuxSampler { namespace gig { Line 547  namespace LinuxSampler { namespace gig {
547              event.pEngineChannel      = this;              event.pEngineChannel      = this;
548              if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);              if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
549              else dmsg(1,("EngineChannel: Input event queue full!"));              else dmsg(1,("EngineChannel: Input event queue full!"));
550                // inform connected virtual MIDI devices if any ...
551                // (e.g. virtual MIDI keyboard in instrument editor(s))
552                ArrayList<VirtualMidiDevice*>& devices =
553                    const_cast<ArrayList<VirtualMidiDevice*>&>(
554                        virtualMidiDevicesReader_MidiThread.Lock()
555                    );
556                for (int i = 0; i < devices.size(); i++) {
557                    devices[i]->SendNoteOnToDevice(Key, Velocity);
558                }
559                virtualMidiDevicesReader_MidiThread.Unlock();
560          }          }
561      }      }
562    
# Line 494  namespace LinuxSampler { namespace gig { Line 578  namespace LinuxSampler { namespace gig {
578              event.pEngineChannel      = this;              event.pEngineChannel      = this;
579              if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);              if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
580              else dmsg(1,("EngineChannel: Input event queue full!"));              else dmsg(1,("EngineChannel: Input event queue full!"));
581                // inform connected virtual MIDI devices if any ...
582                // (e.g. virtual MIDI keyboard in instrument editor(s))
583                ArrayList<VirtualMidiDevice*>& devices =
584                    const_cast<ArrayList<VirtualMidiDevice*>&>(
585                        virtualMidiDevicesReader_MidiThread.Lock()
586                    );
587                for (int i = 0; i < devices.size(); i++) {
588                    devices[i]->SendNoteOffToDevice(Key, Velocity);
589                }
590                virtualMidiDevicesReader_MidiThread.Unlock();
591          }          }
592      }      }
593    
# Line 520  namespace LinuxSampler { namespace gig { Line 614  namespace LinuxSampler { namespace gig {
614              event.pEngineChannel      = this;              event.pEngineChannel      = this;
615              if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);              if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
616              else dmsg(1,("EngineChannel: Input event queue full!"));              else dmsg(1,("EngineChannel: Input event queue full!"));
617                // inform connected virtual MIDI devices if any ...
618                // (e.g. virtual MIDI keyboard in instrument editor(s))
619                ArrayList<VirtualMidiDevice*>& devices =
620                    const_cast<ArrayList<VirtualMidiDevice*>&>(
621                        virtualMidiDevicesReader_MidiThread.Lock()
622                    );
623                for (int i = 0; i < devices.size(); i++) {
624                    devices[i]->SendNoteOffToDevice(Key, Velocity);
625                }
626                virtualMidiDevicesReader_MidiThread.Unlock();
627          }          }
628      }      }
629    
# Line 633  namespace LinuxSampler { namespace gig { Line 737  namespace LinuxSampler { namespace gig {
737          MidiVolume     = 1.0;          MidiVolume     = 1.0;
738          GlobalPanLeft  = 1.0f;          GlobalPanLeft  = 1.0f;
739          GlobalPanRight = 1.0f;          GlobalPanRight = 1.0f;
740            iLastPanRequest = 64;
741            GlobalTranspose = 0;
742          // set all MIDI controller values to zero          // set all MIDI controller values to zero
743          memset(ControllerTable, 0x00, 129);          memset(ControllerTable, 0x00, 129);
744            // reset all FX Send levels
745            for (
746                std::vector<FxSend*>::iterator iter = fxSends.begin();
747                iter != fxSends.end(); iter++
748            ) {
749                (*iter)->Reset();
750            }
751      }      }
752    
753      /**      /**
# Line 651  namespace LinuxSampler { namespace gig { Line 764  namespace LinuxSampler { namespace gig {
764       *                  current audio cycle       *                  current audio cycle
765       */       */
766      void EngineChannel::ImportEvents(uint Samples) {      void EngineChannel::ImportEvents(uint Samples) {
767            // import events from pure software MIDI "devices"
768            // (e.g. virtual keyboard in instrument editor)
769            {
770                const int FragmentPos = 0; // randomly chosen, we don't care about jitter for virtual MIDI devices
771                Event event = pEngine->pEventGenerator->CreateEvent(FragmentPos);
772                VirtualMidiDevice::event_t devEvent; // the event format we get from the virtual MIDI device
773                // as we're going to (carefully) write some status to the
774                // synchronized struct, we cast away the const
775                ArrayList<VirtualMidiDevice*>& devices =
776                    const_cast<ArrayList<VirtualMidiDevice*>&>(virtualMidiDevicesReader_AudioThread.Lock());
777                // iterate through all virtual MIDI devices
778                for (int i = 0; i < devices.size(); i++) {
779                    VirtualMidiDevice* pDev = devices[i];
780                    // I think we can simply flush the whole FIFO(s), the user shouldn't be so fast ;-)
781                    while (pDev->GetMidiEventFromDevice(devEvent)) {
782                        event.Type =
783                            (devEvent.Type == VirtualMidiDevice::EVENT_TYPE_NOTEON) ?
784                                Event::type_note_on : Event::type_note_off;
785                        event.Param.Note.Key      = devEvent.Key;
786                        event.Param.Note.Velocity = devEvent.Velocity;
787                        event.pEngineChannel      = this;
788                        // copy event to internal event list
789                        if (pEvents->poolIsEmpty()) {
790                            dmsg(1,("Event pool emtpy!\n"));
791                            goto exitVirtualDevicesLoop;
792                        }
793                        *pEvents->allocAppend() = event;
794                    }
795                }
796            }
797            exitVirtualDevicesLoop:
798            virtualMidiDevicesReader_AudioThread.Unlock();
799    
800            // import events from the regular MIDI devices
801          RingBuffer<Event,false>::NonVolatileReader eventQueueReader = pEventQueue->get_non_volatile_reader();          RingBuffer<Event,false>::NonVolatileReader eventQueueReader = pEventQueue->get_non_volatile_reader();
802          Event* pEvent;          Event* pEvent;
803          while (true) {          while (true) {
# Line 688  namespace LinuxSampler { namespace gig { Line 835  namespace LinuxSampler { namespace gig {
835                  if (pEngine && pEngine->pAudioOutputDevice) {                  if (pEngine && pEngine->pAudioOutputDevice) {
836                      // fallback to render directly to the AudioOutputDevice's buffer                      // fallback to render directly to the AudioOutputDevice's buffer
837                      pChannelRight = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelRight);                      pChannelRight = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelRight);
838                  } else pChannelRight = NULL;                  } else pChannelRight = NULL;
839              }              }
840          }          }
841          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 843  namespace LinuxSampler { namespace gig {
843          if (pEngine) pEngine->Enable();          if (pEngine) pEngine->Enable();
844      }      }
845    
846        void EngineChannel::Connect(VirtualMidiDevice* pDevice) {
847            // double buffer ... double work ...
848            {
849                ArrayList<VirtualMidiDevice*>& devices = virtualMidiDevices.GetConfigForUpdate();
850                devices.add(pDevice);
851            }
852            {
853                ArrayList<VirtualMidiDevice*>& devices = virtualMidiDevices.SwitchConfig();
854                devices.add(pDevice);
855            }
856        }
857    
858        void EngineChannel::Disconnect(VirtualMidiDevice* pDevice) {
859            // double buffer ... double work ...
860            {
861                ArrayList<VirtualMidiDevice*>& devices = virtualMidiDevices.GetConfigForUpdate();
862                devices.remove(pDevice);
863            }
864            {
865                ArrayList<VirtualMidiDevice*>& devices = virtualMidiDevices.SwitchConfig();
866                devices.remove(pDevice);
867            }
868        }
869    
870      float EngineChannel::Volume() {      float EngineChannel::Volume() {
871          return GlobalVolume;          return GlobalVolume;
872      }      }
# Line 705  namespace LinuxSampler { namespace gig { Line 876  namespace LinuxSampler { namespace gig {
876          bStatusChanged = true; // status of engine channel has changed, so set notify flag          bStatusChanged = true; // status of engine channel has changed, so set notify flag
877      }      }
878    
879        float EngineChannel::Pan() {
880            return float(iLastPanRequest - 64) / 64.0f;
881        }
882    
883        void EngineChannel::Pan(float f) {
884            int iMidiPan = int(f * 64.0f) + 64;
885            if (iMidiPan > 127) iMidiPan = 127;
886            else if (iMidiPan < 0) iMidiPan = 0;
887            GlobalPanLeft  = Engine::PanCurve[128 - iMidiPan];
888            GlobalPanRight = Engine::PanCurve[iMidiPan];
889            iLastPanRequest = iMidiPan;
890        }
891    
892      uint EngineChannel::Channels() {      uint EngineChannel::Channels() {
893          return 2;          return 2;
894      }      }
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