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

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revision 80 by schoenebeck, Sun May 23 19:16:33 2004 UTC revision 287 by schoenebeck, Sat Oct 16 17:38:03 2004 UTC
# Line 23  Line 23 
23  #include <sstream>  #include <sstream>
24  #include "DiskThread.h"  #include "DiskThread.h"
25  #include "Voice.h"  #include "Voice.h"
26    #include "EGADSR.h"
27    
28  #include "Engine.h"  #include "Engine.h"
29    
# Line 37  namespace LinuxSampler { namespace gig { Line 38  namespace LinuxSampler { namespace gig {
38          pAudioOutputDevice = NULL;          pAudioOutputDevice = NULL;
39          pDiskThread        = NULL;          pDiskThread        = NULL;
40          pEventGenerator    = NULL;          pEventGenerator    = NULL;
41          pEventQueue        = new RingBuffer<Event>(MAX_EVENTS_PER_FRAGMENT);          pSysexBuffer       = new RingBuffer<uint8_t>(SYSEX_BUFFER_SIZE, 0);
42          pEventPool         = new RTELMemoryPool<Event>(MAX_EVENTS_PER_FRAGMENT);          pEventQueue        = new RingBuffer<Event>(MAX_EVENTS_PER_FRAGMENT, 0);
43          pVoicePool         = new RTELMemoryPool<Voice>(MAX_AUDIO_VOICES);          pEventPool         = new Pool<Event>(MAX_EVENTS_PER_FRAGMENT);
44          pActiveKeys        = new RTELMemoryPool<uint>(128);          pVoicePool         = new Pool<Voice>(MAX_AUDIO_VOICES);
45          pEvents            = new RTEList<Event>(pEventPool);          pActiveKeys        = new Pool<uint>(128);
46          pCCEvents          = new RTEList<Event>(pEventPool);          pVoiceStealingQueue = new RTList<Event>(pEventPool);
47            pEvents            = new RTList<Event>(pEventPool);
48            pCCEvents          = new RTList<Event>(pEventPool);
49          for (uint i = 0; i < Event::destination_count; i++) {          for (uint i = 0; i < Event::destination_count; i++) {
50              pSynthesisEvents[i] = new RTEList<Event>(pEventPool);              pSynthesisEvents[i] = new RTList<Event>(pEventPool);
51          }          }
52          for (uint i = 0; i < 128; i++) {          for (uint i = 0; i < 128; i++) {
53              pMIDIKeyInfo[i].pActiveVoices = new RTEList<Voice>(pVoicePool);              pMIDIKeyInfo[i].pActiveVoices  = new RTList<Voice>(pVoicePool);
54              pMIDIKeyInfo[i].KeyPressed    = false;              pMIDIKeyInfo[i].KeyPressed     = false;
55              pMIDIKeyInfo[i].Active        = false;              pMIDIKeyInfo[i].Active         = false;
56              pMIDIKeyInfo[i].pSelf         = NULL;              pMIDIKeyInfo[i].ReleaseTrigger = false;
57              pMIDIKeyInfo[i].pEvents       = new RTEList<Event>(pEventPool);              pMIDIKeyInfo[i].pEvents        = new RTList<Event>(pEventPool);
58          }          }
59          for (Voice* pVoice = pVoicePool->alloc(); pVoice; pVoice = pVoicePool->alloc()) {          for (RTList<Voice>::Iterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {
60              pVoice->SetEngine(this);              iterVoice->SetEngine(this);
61          }          }
62          pVoicePool->clear();          pVoicePool->clear();
63    
# Line 62  namespace LinuxSampler { namespace gig { Line 65  namespace LinuxSampler { namespace gig {
65          pBasicFilterParameters  = NULL;          pBasicFilterParameters  = NULL;
66          pMainFilterParameters   = NULL;          pMainFilterParameters   = NULL;
67    
68            InstrumentIdx = -1;
69            InstrumentStat = -1;
70    
71            AudioDeviceChannelLeft  = -1;
72            AudioDeviceChannelRight = -1;
73    
74          ResetInternal();          ResetInternal();
75      }      }
76    
# Line 86  namespace LinuxSampler { namespace gig { Line 95  namespace LinuxSampler { namespace gig {
95          if (pEventPool)  delete pEventPool;          if (pEventPool)  delete pEventPool;
96          if (pVoicePool)  delete pVoicePool;          if (pVoicePool)  delete pVoicePool;
97          if (pActiveKeys) delete pActiveKeys;          if (pActiveKeys) delete pActiveKeys;
98            if (pSysexBuffer) delete pSysexBuffer;
99          if (pEventGenerator) delete pEventGenerator;          if (pEventGenerator) delete pEventGenerator;
100          if (pMainFilterParameters) delete[] pMainFilterParameters;          if (pMainFilterParameters) delete[] pMainFilterParameters;
101          if (pBasicFilterParameters) delete[] pBasicFilterParameters;          if (pBasicFilterParameters) delete[] pBasicFilterParameters;
102          if (pSynthesisParameters[0]) delete[] pSynthesisParameters[0];          if (pSynthesisParameters[0]) delete[] pSynthesisParameters[0];
103            if (pVoiceStealingQueue) delete pVoiceStealingQueue;
104      }      }
105    
106      void Engine::Enable() {      void Engine::Enable() {
# Line 146  namespace LinuxSampler { namespace gig { Line 157  namespace LinuxSampler { namespace gig {
157          SustainPedal        = false;          SustainPedal        = false;
158          ActiveVoiceCount    = 0;          ActiveVoiceCount    = 0;
159          ActiveVoiceCountMax = 0;          ActiveVoiceCountMax = 0;
160            GlobalVolume        = 1.0;
161    
162            // reset voice stealing parameters
163            itLastStolenVoice = RTList<Voice>::Iterator();
164            iuiLastStolenKey  = RTList<uint>::Iterator();
165            pVoiceStealingQueue->clear();
166    
167            // reset to normal chromatic scale (means equal temper)
168            memset(&ScaleTuning[0], 0x00, 12);
169    
170          // set all MIDI controller values to zero          // set all MIDI controller values to zero
171          memset(ControllerTable, 0x00, 128);          memset(ControllerTable, 0x00, 128);
# Line 154  namespace LinuxSampler { namespace gig { Line 174  namespace LinuxSampler { namespace gig {
174          for (uint i = 0; i < 128; i++) {          for (uint i = 0; i < 128; i++) {
175              pMIDIKeyInfo[i].pActiveVoices->clear();              pMIDIKeyInfo[i].pActiveVoices->clear();
176              pMIDIKeyInfo[i].pEvents->clear();              pMIDIKeyInfo[i].pEvents->clear();
177              pMIDIKeyInfo[i].KeyPressed = false;              pMIDIKeyInfo[i].KeyPressed     = false;
178              pMIDIKeyInfo[i].Active     = false;              pMIDIKeyInfo[i].Active         = false;
179              pMIDIKeyInfo[i].pSelf      = NULL;              pMIDIKeyInfo[i].ReleaseTrigger = false;
180                pMIDIKeyInfo[i].itSelf         = Pool<uint>::Iterator();
181          }          }
182    
183            // reset all key groups
184            map<uint,uint*>::iterator iter = ActiveKeyGroups.begin();
185            for (; iter != ActiveKeyGroups.end(); iter++) iter->second = NULL;
186    
187          // reset all voices          // reset all voices
188          for (Voice* pVoice = pVoicePool->alloc(); pVoice; pVoice = pVoicePool->alloc()) {          for (RTList<Voice>::Iterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {
189              pVoice->Reset();              iterVoice->Reset();
190          }          }
191          pVoicePool->clear();          pVoicePool->clear();
192    
# Line 195  namespace LinuxSampler { namespace gig { Line 220  namespace LinuxSampler { namespace gig {
220              Instruments.HandBack(pInstrument, this);              Instruments.HandBack(pInstrument, this);
221          }          }
222    
223            InstrumentFile = FileName;
224            InstrumentIdx = Instrument;
225            InstrumentStat = 0;
226    
227            // delete all key groups
228            ActiveKeyGroups.clear();
229    
230          // request gig instrument from instrument manager          // request gig instrument from instrument manager
231          try {          try {
232              instrument_id_t instrid;              instrument_id_t instrid;
# Line 202  namespace LinuxSampler { namespace gig { Line 234  namespace LinuxSampler { namespace gig {
234              instrid.iInstrument = Instrument;              instrid.iInstrument = Instrument;
235              pInstrument = Instruments.Borrow(instrid, this);              pInstrument = Instruments.Borrow(instrid, this);
236              if (!pInstrument) {              if (!pInstrument) {
237                    InstrumentStat = -1;
238                  dmsg(1,("no instrument loaded!!!\n"));                  dmsg(1,("no instrument loaded!!!\n"));
239                  exit(EXIT_FAILURE);                  exit(EXIT_FAILURE);
240              }              }
241          }          }
242          catch (RIFF::Exception e) {          catch (RIFF::Exception e) {
243                InstrumentStat = -2;
244              String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message;              String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message;
245              throw LinuxSamplerException(msg);              throw LinuxSamplerException(msg);
246          }          }
247          catch (InstrumentResourceManagerException e) {          catch (InstrumentResourceManagerException e) {
248                InstrumentStat = -3;
249              String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message();              String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message();
250              throw LinuxSamplerException(msg);              throw LinuxSamplerException(msg);
251          }          }
252          catch (...) {          catch (...) {
253                InstrumentStat = -4;
254              throw LinuxSamplerException("gig::Engine error: Failed to load instrument, cause: Unknown exception while trying to parse gig file.");              throw LinuxSamplerException("gig::Engine error: Failed to load instrument, cause: Unknown exception while trying to parse gig file.");
255          }          }
256    
257            // rebuild ActiveKeyGroups map with key groups of current instrument
258            for (::gig::Region* pRegion = pInstrument->GetFirstRegion(); pRegion; pRegion = pInstrument->GetNextRegion())
259                if (pRegion->KeyGroup) ActiveKeyGroups[pRegion->KeyGroup] = NULL;
260    
261            InstrumentStat = 100;
262    
263          // inform audio driver for the need of two channels          // inform audio driver for the need of two channels
264          try {          try {
265              if (pAudioOutputDevice) pAudioOutputDevice->AcquireChannels(2); // gig Engine only stereo              if (pAudioOutputDevice) pAudioOutputDevice->AcquireChannels(2); // gig Engine only stereo
# Line 247  namespace LinuxSampler { namespace gig { Line 289  namespace LinuxSampler { namespace gig {
289       * update process was completed, so we can continue with playback.       * update process was completed, so we can continue with playback.
290       */       */
291      void Engine::ResourceUpdated(::gig::Instrument* pOldResource, ::gig::Instrument* pNewResource, void* pUpdateArg) {      void Engine::ResourceUpdated(::gig::Instrument* pOldResource, ::gig::Instrument* pNewResource, void* pUpdateArg) {
292          this->pInstrument = pNewResource;          this->pInstrument = pNewResource; //TODO: there are couple of engine parameters we should update here as well if the instrument was updated (see LoadInstrument())
293          Enable();          Enable();
294      }      }
295    
# Line 265  namespace LinuxSampler { namespace gig { Line 307  namespace LinuxSampler { namespace gig {
307              throw LinuxSamplerException(msg);              throw LinuxSamplerException(msg);
308          }          }
309    
310            this->AudioDeviceChannelLeft  = 0;
311            this->AudioDeviceChannelRight = 1;
312            this->pOutputLeft             = pAudioOutputDevice->Channel(0)->Buffer();
313            this->pOutputRight            = pAudioOutputDevice->Channel(1)->Buffer();
314            this->MaxSamplesPerCycle      = pAudioOutputDevice->MaxSamplesPerCycle();
315            this->SampleRate              = pAudioOutputDevice->SampleRate();
316    
317            // FIXME: audio drivers with varying fragment sizes might be a problem here
318            MaxFadeOutPos = MaxSamplesPerCycle - int(double(SampleRate) * EG_MIN_RELEASE_TIME) - 1;
319            if (MaxFadeOutPos < 0)
320                throw LinuxSamplerException("EG_MIN_RELEASE_TIME in EGADSR.h to big for current audio fragment size / sampling rate!");
321    
322          // (re)create disk thread          // (re)create disk thread
323          if (this->pDiskThread) {          if (this->pDiskThread) {
324              this->pDiskThread->StopThread();              this->pDiskThread->StopThread();
# Line 276  namespace LinuxSampler { namespace gig { Line 330  namespace LinuxSampler { namespace gig {
330              exit(EXIT_FAILURE);              exit(EXIT_FAILURE);
331          }          }
332    
333          for (Voice* pVoice = pVoicePool->alloc(); pVoice; pVoice = pVoicePool->alloc()) {          for (RTList<Voice>::Iterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {
334              pVoice->pDiskThread = this->pDiskThread;              iterVoice->pDiskThread = this->pDiskThread;
             pVoice->SetOutput(pAudioOut);  
335              dmsg(3,("d"));              dmsg(3,("d"));
336          }          }
337          pVoicePool->clear();          pVoicePool->clear();
# Line 303  namespace LinuxSampler { namespace gig { Line 356  namespace LinuxSampler { namespace gig {
356          pDiskThread->StartThread();          pDiskThread->StartThread();
357          dmsg(1,("OK\n"));          dmsg(1,("OK\n"));
358    
359          for (Voice* pVoice = pVoicePool->first(); pVoice; pVoice = pVoicePool->next()) {          for (RTList<Voice>::Iterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {
360              if (!pVoice->pDiskThread) {              if (!iterVoice->pDiskThread) {
361                  dmsg(0,("Engine -> voice::trigger: !pDiskThread\n"));                  dmsg(0,("Engine -> voice::trigger: !pDiskThread\n"));
362                  exit(EXIT_FAILURE);                  exit(EXIT_FAILURE);
363              }              }
# Line 316  namespace LinuxSampler { namespace gig { Line 369  namespace LinuxSampler { namespace gig {
369              AudioOutputDevice* olddevice = pAudioOutputDevice;              AudioOutputDevice* olddevice = pAudioOutputDevice;
370              pAudioOutputDevice = NULL;              pAudioOutputDevice = NULL;
371              olddevice->Disconnect(this);              olddevice->Disconnect(this);
372                AudioDeviceChannelLeft  = -1;
373                AudioDeviceChannelRight = -1;
374          }          }
375      }      }
376    
# Line 349  namespace LinuxSampler { namespace gig { Line 404  namespace LinuxSampler { namespace gig {
404          for (uint i = 0; i < Event::destination_count; i++) {          for (uint i = 0; i < Event::destination_count; i++) {
405              pSynthesisEvents[i]->clear();              pSynthesisEvents[i]->clear();
406          }          }
407            {
408                RTList<uint>::Iterator iuiKey = pActiveKeys->first();
409                RTList<uint>::Iterator end    = pActiveKeys->end();
410                for(; iuiKey != end; ++iuiKey) {
411                    pMIDIKeyInfo[*iuiKey].pEvents->clear(); // free all events on the key
412                }
413            }
414    
415          // read and copy events from input queue          // read and copy events from input queue
416          Event event = pEventGenerator->CreateEvent();          Event event = pEventGenerator->CreateEvent();
417          while (true) {          while (true) {
418              if (!pEventQueue->pop(&event)) break;              if (!pEventQueue->pop(&event) || pEvents->poolIsEmpty()) break;
419              pEvents->alloc_assign(event);              *pEvents->allocAppend() = event;
420          }          }
421    
422    
# Line 363  namespace LinuxSampler { namespace gig { Line 425  namespace LinuxSampler { namespace gig {
425    
426    
427          // process events          // process events
428          Event* pNextEvent = pEvents->first();          {
429          while (pNextEvent) {              RTList<Event>::Iterator itEvent = pEvents->first();
430              Event* pEvent = pNextEvent;              RTList<Event>::Iterator end     = pEvents->end();
431              pEvents->set_current(pEvent);              for (; itEvent != end; ++itEvent) {
432              pNextEvent = pEvents->next();                  switch (itEvent->Type) {
433              switch (pEvent->Type) {                      case Event::type_note_on:
434                  case Event::type_note_on:                          dmsg(5,("Engine: Note on received\n"));
435                      dmsg(5,("Audio Thread: Note on received\n"));                          ProcessNoteOn(itEvent);
436                      ProcessNoteOn(pEvent);                          break;
437                      break;                      case Event::type_note_off:
438                  case Event::type_note_off:                          dmsg(5,("Engine: Note off received\n"));
439                      dmsg(5,("Audio Thread: Note off received\n"));                          ProcessNoteOff(itEvent);
440                      ProcessNoteOff(pEvent);                          break;
441                      break;                      case Event::type_control_change:
442                  case Event::type_control_change:                          dmsg(5,("Engine: MIDI CC received\n"));
443                      dmsg(5,("Audio Thread: MIDI CC received\n"));                          ProcessControlChange(itEvent);
444                      ProcessControlChange(pEvent);                          break;
445                      break;                      case Event::type_pitchbend:
446                  case Event::type_pitchbend:                          dmsg(5,("Engine: Pitchbend received\n"));
447                      dmsg(5,("Audio Thread: Pitchbend received\n"));                          ProcessPitchbend(itEvent);
448                      ProcessPitchbend(pEvent);                          break;
449                      break;                      case Event::type_sysex:
450                            dmsg(5,("Engine: Sysex received\n"));
451                            ProcessSysex(itEvent);
452                            break;
453                    }
454              }              }
455          }          }
456    
457    
         // render audio from all active voices  
458          int active_voices = 0;          int active_voices = 0;
459          uint* piKey = pActiveKeys->first();  
460          while (piKey) { // iterate through all active keys          // render audio from all active voices
461              midi_key_info_t* pKey = &pMIDIKeyInfo[*piKey];          {
462              pActiveKeys->set_current(piKey);              RTList<uint>::Iterator iuiKey = pActiveKeys->first();
463              piKey = pActiveKeys->next();              RTList<uint>::Iterator end    = pActiveKeys->end();
464                while (iuiKey != end) { // iterate through all active keys
465              Voice* pVoiceNext = pKey->pActiveVoices->first();                  midi_key_info_t* pKey = &pMIDIKeyInfo[*iuiKey];
466              while (pVoiceNext) { // iterate through all voices on this key                  ++iuiKey;
467                  // already get next voice on key  
468                  Voice* pVoice = pVoiceNext;                  RTList<Voice>::Iterator itVoice     = pKey->pActiveVoices->first();
469                  pKey->pActiveVoices->set_current(pVoice);                  RTList<Voice>::Iterator itVoicesEnd = pKey->pActiveVoices->end();
470                  pVoiceNext = pKey->pActiveVoices->next();                  for (; itVoice != itVoicesEnd; ++itVoice) { // iterate through all voices on this key
471                        // now render current voice
472                  // now render current voice                      itVoice->Render(Samples);
473                  pVoice->Render(Samples);                      if (itVoice->IsActive()) active_voices++; // still active
474                  if (pVoice->IsActive()) active_voices++; // still active                      else { // voice reached end, is now inactive
475                  else { // voice reached end, is now inactive                          FreeVoice(itVoice); // remove voice from the list of active voices
476                      KillVoice(pVoice); // remove voice from the list of active voices                      }
477                  }                  }
478              }              }
479              pKey->pEvents->clear(); // free all events on the key          }
480    
481    
482            // now render all postponed voices from voice stealing
483            {
484                RTList<Event>::Iterator itVoiceStealEvent = pVoiceStealingQueue->first();
485                RTList<Event>::Iterator end               = pVoiceStealingQueue->end();
486                for (; itVoiceStealEvent != end; ++itVoiceStealEvent) {
487                    Pool<Voice>::Iterator itNewVoice = LaunchVoice(itVoiceStealEvent, itVoiceStealEvent->Param.Note.Layer, itVoiceStealEvent->Param.Note.ReleaseTrigger, false);
488                    if (itNewVoice) {
489                        for (; itNewVoice; itNewVoice = itNewVoice->itChildVoice) {
490                            itNewVoice->Render(Samples);
491                            if (itNewVoice->IsActive()) active_voices++; // still active
492                            else { // voice reached end, is now inactive
493                                FreeVoice(itNewVoice); // remove voice from the list of active voices
494                            }
495                        }
496                    }
497                    else dmsg(1,("gig::Engine: ERROR, voice stealing didn't work out!\n"));
498                }
499            }
500            // reset voice stealing for the new fragment
501            pVoiceStealingQueue->clear();
502            itLastStolenVoice = RTList<Voice>::Iterator();
503            iuiLastStolenKey  = RTList<uint>::Iterator();
504    
505    
506            // free all keys which have no active voices left
507            {
508                RTList<uint>::Iterator iuiKey = pActiveKeys->first();
509                RTList<uint>::Iterator end    = pActiveKeys->end();
510                while (iuiKey != end) { // iterate through all active keys
511                    midi_key_info_t* pKey = &pMIDIKeyInfo[*iuiKey];
512                    ++iuiKey;
513                    if (pKey->pActiveVoices->isEmpty()) FreeKey(pKey);
514                    #if DEVMODE
515                    else { // FIXME: should be removed before the final release (purpose: just a sanity check for debugging)
516                        RTList<Voice>::Iterator itVoice     = pKey->pActiveVoices->first();
517                        RTList<Voice>::Iterator itVoicesEnd = pKey->pActiveVoices->end();
518                        for (; itVoice != itVoicesEnd; ++itVoice) { // iterate through all voices on this key
519                            if (itVoice->itKillEvent) {
520                                dmsg(1,("gig::Engine: ERROR, killed voice survived !!!\n"));
521                            }
522                        }
523                    }
524                    #endif // DEVMODE
525                }
526          }          }
527    
528    
# Line 432  namespace LinuxSampler { namespace gig { Line 543  namespace LinuxSampler { namespace gig {
543       *  @param Velocity - MIDI velocity value of the triggered key       *  @param Velocity - MIDI velocity value of the triggered key
544       */       */
545      void Engine::SendNoteOn(uint8_t Key, uint8_t Velocity) {      void Engine::SendNoteOn(uint8_t Key, uint8_t Velocity) {
546          Event event    = pEventGenerator->CreateEvent();          Event event               = pEventGenerator->CreateEvent();
547          event.Type     = Event::type_note_on;          event.Type                = Event::type_note_on;
548          event.Key      = Key;          event.Param.Note.Key      = Key;
549          event.Velocity = Velocity;          event.Param.Note.Velocity = Velocity;
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,("Engine: Input event queue full!"));          else dmsg(1,("Engine: Input event queue full!"));
552      }      }
# Line 448  namespace LinuxSampler { namespace gig { Line 559  namespace LinuxSampler { namespace gig {
559       *  @param Velocity - MIDI release velocity value of the released key       *  @param Velocity - MIDI release velocity value of the released key
560       */       */
561      void Engine::SendNoteOff(uint8_t Key, uint8_t Velocity) {      void Engine::SendNoteOff(uint8_t Key, uint8_t Velocity) {
562          Event event    = pEventGenerator->CreateEvent();          Event event               = pEventGenerator->CreateEvent();
563          event.Type     = Event::type_note_off;          event.Type                = Event::type_note_off;
564          event.Key      = Key;          event.Param.Note.Key      = Key;
565          event.Velocity = Velocity;          event.Param.Note.Velocity = Velocity;
566          if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);          if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
567          else dmsg(1,("Engine: Input event queue full!"));          else dmsg(1,("Engine: Input event queue full!"));
568      }      }
# Line 463  namespace LinuxSampler { namespace gig { Line 574  namespace LinuxSampler { namespace gig {
574       *  @param Pitch - MIDI pitch value (-8192 ... +8191)       *  @param Pitch - MIDI pitch value (-8192 ... +8191)
575       */       */
576      void Engine::SendPitchbend(int Pitch) {      void Engine::SendPitchbend(int Pitch) {
577          Event event = pEventGenerator->CreateEvent();          Event event             = pEventGenerator->CreateEvent();
578          event.Type  = Event::type_pitchbend;          event.Type              = Event::type_pitchbend;
579          event.Pitch = Pitch;          event.Param.Pitch.Pitch = Pitch;
580          if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);          if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
581          else dmsg(1,("Engine: Input event queue full!"));          else dmsg(1,("Engine: Input event queue full!"));
582      }      }
# Line 478  namespace LinuxSampler { namespace gig { Line 589  namespace LinuxSampler { namespace gig {
589       *  @param Value      - value of the control change       *  @param Value      - value of the control change
590       */       */
591      void Engine::SendControlChange(uint8_t Controller, uint8_t Value) {      void Engine::SendControlChange(uint8_t Controller, uint8_t Value) {
592          Event event      = pEventGenerator->CreateEvent();          Event event               = pEventGenerator->CreateEvent();
593          event.Type       = Event::type_control_change;          event.Type                = Event::type_control_change;
594          event.Controller = Controller;          event.Param.CC.Controller = Controller;
595          event.Value      = Value;          event.Param.CC.Value      = Value;
596          if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);          if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
597          else dmsg(1,("Engine: Input event queue full!"));          else dmsg(1,("Engine: Input event queue full!"));
598      }      }
599    
600      /**      /**
601         *  Will be called by the MIDI input device whenever a MIDI system
602         *  exclusive message has arrived.
603         *
604         *  @param pData - pointer to sysex data
605         *  @param Size  - lenght of sysex data (in bytes)
606         */
607        void Engine::SendSysex(void* pData, uint Size) {
608            Event event             = pEventGenerator->CreateEvent();
609            event.Type              = Event::type_sysex;
610            event.Param.Sysex.Size  = Size;
611            if (pEventQueue->write_space() > 0) {
612                if (pSysexBuffer->write_space() >= Size) {
613                    // copy sysex data to input buffer
614                    uint toWrite = Size;
615                    uint8_t* pPos = (uint8_t*) pData;
616                    while (toWrite) {
617                        const uint writeNow = RTMath::Min(toWrite, pSysexBuffer->write_space_to_end());
618                        pSysexBuffer->write(pPos, writeNow);
619                        toWrite -= writeNow;
620                        pPos    += writeNow;
621    
622                    }
623                    // finally place sysex event into input event queue
624                    pEventQueue->push(&event);
625                }
626                else dmsg(1,("Engine: Sysex message too large (%d byte) for input buffer (%d byte)!",Size,SYSEX_BUFFER_SIZE));
627            }
628            else dmsg(1,("Engine: Input event queue full!"));
629        }
630    
631        /**
632       *  Assigns and triggers a new voice for the respective MIDI key.       *  Assigns and triggers a new voice for the respective MIDI key.
633       *       *
634       *  @param pNoteOnEvent - key, velocity and time stamp of the event       *  @param itNoteOnEvent - key, velocity and time stamp of the event
635       */       */
636      void Engine::ProcessNoteOn(Event* pNoteOnEvent) {      void Engine::ProcessNoteOn(Pool<Event>::Iterator& itNoteOnEvent) {
637          midi_key_info_t* pKey = &pMIDIKeyInfo[pNoteOnEvent->Key];          midi_key_info_t* pKey = &pMIDIKeyInfo[itNoteOnEvent->Param.Note.Key];
638    
639          pKey->KeyPressed = true; // the MIDI key was now pressed down          pKey->KeyPressed = true; // the MIDI key was now pressed down
640    
641          // cancel release process of voices on this key if needed          // cancel release process of voices on this key if needed
642          if (pKey->Active && !SustainPedal) {          if (pKey->Active && !SustainPedal) {
643              pNoteOnEvent->Type = Event::type_cancel_release; // transform event type              RTList<Event>::Iterator itCancelReleaseEvent = pKey->pEvents->allocAppend();
644              pEvents->move(pNoteOnEvent, pKey->pEvents); // move event to the key's own event list              if (itCancelReleaseEvent) {
645          }                  *itCancelReleaseEvent = *itNoteOnEvent;                  // copy event
646                    itCancelReleaseEvent->Type = Event::type_cancel_release; // transform event type
         // allocate a new voice for the key  
         Voice* pNewVoice = pKey->pActiveVoices->alloc();  
         if (pNewVoice) {  
             // launch the new voice  
             if (pNewVoice->Trigger(pNoteOnEvent, this->Pitch, this->pInstrument) < 0) {  
                 dmsg(1,("Triggering new voice failed!\n"));  
                 pKey->pActiveVoices->free(pNewVoice);  
             }  
             else if (!pKey->Active) { // mark as active key  
                 pKey->Active = true;  
                 pKey->pSelf  = pActiveKeys->alloc();  
                 *pKey->pSelf = pNoteOnEvent->Key;  
647              }              }
648                else dmsg(1,("Event pool emtpy!\n"));
649          }          }
650          else std::cerr << "No free voice!" << std::endl << std::flush;  
651            // move note on event to the key's own event list
652            RTList<Event>::Iterator itNoteOnEventOnKeyList = itNoteOnEvent.moveToEndOf(pKey->pEvents);
653    
654            // allocate and trigger a new voice for the key
655            LaunchVoice(itNoteOnEventOnKeyList, 0, false, true);
656      }      }
657    
658      /**      /**
# Line 525  namespace LinuxSampler { namespace gig { Line 661  namespace LinuxSampler { namespace gig {
661       *  sustain pedal will be released or voice turned inactive by itself (e.g.       *  sustain pedal will be released or voice turned inactive by itself (e.g.
662       *  due to completion of sample playback).       *  due to completion of sample playback).
663       *       *
664       *  @param pNoteOffEvent - key, velocity and time stamp of the event       *  @param itNoteOffEvent - key, velocity and time stamp of the event
665       */       */
666      void Engine::ProcessNoteOff(Event* pNoteOffEvent) {      void Engine::ProcessNoteOff(Pool<Event>::Iterator& itNoteOffEvent) {
667          midi_key_info_t* pKey = &pMIDIKeyInfo[pNoteOffEvent->Key];          midi_key_info_t* pKey = &pMIDIKeyInfo[itNoteOffEvent->Param.Note.Key];
668    
669          pKey->KeyPressed = false; // the MIDI key was now released          pKey->KeyPressed = false; // the MIDI key was now released
670    
671          // release voices on this key if needed          // release voices on this key if needed
672          if (pKey->Active && !SustainPedal) {          if (pKey->Active && !SustainPedal) {
673              pNoteOffEvent->Type = Event::type_release; // transform event type              itNoteOffEvent->Type = Event::type_release; // transform event type
674              pEvents->move(pNoteOffEvent, pKey->pEvents); // move event to the key's own event list          }
675    
676            // move event to the key's own event list
677            RTList<Event>::Iterator itNoteOffEventOnKeyList = itNoteOffEvent.moveToEndOf(pKey->pEvents);
678    
679            // spawn release triggered voice(s) if needed
680            if (pKey->ReleaseTrigger) {
681                LaunchVoice(itNoteOffEventOnKeyList, 0, true, false); //FIXME: for the moment we don't perform voice stealing for release triggered samples
682                pKey->ReleaseTrigger = false;
683          }          }
684      }      }
685    
# Line 543  namespace LinuxSampler { namespace gig { Line 687  namespace LinuxSampler { namespace gig {
687       *  Moves pitchbend event from the general (input) event list to the pitch       *  Moves pitchbend event from the general (input) event list to the pitch
688       *  event list.       *  event list.
689       *       *
690       *  @param pPitchbendEvent - absolute pitch value and time stamp of the event       *  @param itPitchbendEvent - absolute pitch value and time stamp of the event
691         */
692        void Engine::ProcessPitchbend(Pool<Event>::Iterator& itPitchbendEvent) {
693            this->Pitch = itPitchbendEvent->Param.Pitch.Pitch; // store current pitch value
694            itPitchbendEvent.moveToEndOf(pSynthesisEvents[Event::destination_vco]);
695        }
696    
697        /**
698         *  Allocates and triggers a new voice. This method will usually be
699         *  called by the ProcessNoteOn() method and by the voices itself
700         *  (e.g. to spawn further voices on the same key for layered sounds).
701         *
702         *  @param itNoteOnEvent       - key, velocity and time stamp of the event
703         *  @param iLayer              - layer index for the new voice (optional - only
704         *                               in case of layered sounds of course)
705         *  @param ReleaseTriggerVoice - if new voice is a release triggered voice
706         *                               (optional, default = false)
707         *  @param VoiceStealing       - if voice stealing should be performed
708         *                               when there is no free voice
709         *                               (optional, default = true)
710         *  @returns pointer to new voice or NULL if there was no free voice or
711         *           if an error occured while trying to trigger the new voice
712       */       */
713      void Engine::ProcessPitchbend(Event* pPitchbendEvent) {      Pool<Voice>::Iterator Engine::LaunchVoice(Pool<Event>::Iterator& itNoteOnEvent, int iLayer, bool ReleaseTriggerVoice, bool VoiceStealing) {
714          this->Pitch = pPitchbendEvent->Pitch; // store current pitch value          midi_key_info_t* pKey = &pMIDIKeyInfo[itNoteOnEvent->Param.Note.Key];
715          pEvents->move(pPitchbendEvent, pSynthesisEvents[Event::destination_vco]);  
716            // allocate a new voice for the key
717            Pool<Voice>::Iterator itNewVoice = pKey->pActiveVoices->allocAppend();
718            if (itNewVoice) {
719                // launch the new voice
720                if (itNewVoice->Trigger(itNoteOnEvent, this->Pitch, this->pInstrument, iLayer, ReleaseTriggerVoice, VoiceStealing) < 0) {
721                    dmsg(1,("Triggering new voice failed!\n"));
722                    pKey->pActiveVoices->free(itNewVoice);
723                }
724                else { // on success
725                    uint** ppKeyGroup = NULL;
726                    if (itNewVoice->KeyGroup) { // if this voice / key belongs to a key group
727                        ppKeyGroup = &ActiveKeyGroups[itNewVoice->KeyGroup];
728                        if (*ppKeyGroup) { // if there's already an active key in that key group
729                            midi_key_info_t* pOtherKey = &pMIDIKeyInfo[**ppKeyGroup];
730                            // kill all voices on the (other) key
731                            RTList<Voice>::Iterator itVoiceToBeKilled = pOtherKey->pActiveVoices->first();
732                            RTList<Voice>::Iterator end               = pOtherKey->pActiveVoices->end();
733                            for (; itVoiceToBeKilled != end; ++itVoiceToBeKilled) {
734                                if (itVoiceToBeKilled->Type != Voice::type_release_trigger) itVoiceToBeKilled->Kill(itNoteOnEvent);
735                            }
736                        }
737                    }
738                    if (!pKey->Active) { // mark as active key
739                        pKey->Active = true;
740                        pKey->itSelf = pActiveKeys->allocAppend();
741                        *pKey->itSelf = itNoteOnEvent->Param.Note.Key;
742                    }
743                    if (itNewVoice->KeyGroup) {
744                        *ppKeyGroup = &*pKey->itSelf; // put key as the (new) active key to its key group
745                    }
746                    if (itNewVoice->Type == Voice::type_release_trigger_required) pKey->ReleaseTrigger = true; // mark key for the need of release triggered voice(s)
747                    return itNewVoice; // success
748                }
749            }
750            else if (VoiceStealing) {
751                // first, get total amount of required voices (dependant on amount of layers)
752                ::gig::Region* pRegion = pInstrument->GetRegion(itNoteOnEvent->Param.Note.Key);
753                if (!pRegion) return Pool<Voice>::Iterator(); // nothing defined for this MIDI key, so no voice needed
754                int voicesRequired = pRegion->Layers;
755    
756                // now steal the (remaining) amount of voices
757                for (int i = iLayer; i < voicesRequired; i++)
758                    StealVoice(itNoteOnEvent);
759    
760                // put note-on event into voice-stealing queue, so it will be reprocessed after killed voice died
761                RTList<Event>::Iterator itStealEvent = pVoiceStealingQueue->allocAppend();
762                if (itStealEvent) {
763                    *itStealEvent = *itNoteOnEvent; // copy event
764                    itStealEvent->Param.Note.Layer = iLayer;
765                    itStealEvent->Param.Note.ReleaseTrigger = ReleaseTriggerVoice;
766                }
767                else dmsg(1,("Voice stealing queue full!\n"));
768            }
769    
770            return Pool<Voice>::Iterator(); // no free voice or error
771      }      }
772    
773      /**      /**
774       *  Immediately kills the voice given with pVoice (no matter if sustain is       *  Will be called by LaunchVoice() method in case there are no free
775       *  pressed or not) and removes it from the MIDI key's list of active voice.       *  voices left. This method will select and kill one old voice for
776       *  This method will e.g. be called if a voice went inactive by itself.       *  voice stealing and postpone the note-on event until the selected
777         *  voice actually died.
778       *       *
779       *  @param pVoice - points to the voice to be killed       *  @param itNoteOnEvent - key, velocity and time stamp of the event
780       */       */
781      void Engine::KillVoice(Voice* pVoice) {      void Engine::StealVoice(Pool<Event>::Iterator& itNoteOnEvent) {
782          if (pVoice) {          if (!pEventPool->poolIsEmpty()) {
783              if (pVoice->IsActive()) pVoice->Kill();  
784                RTList<uint>::Iterator  iuiOldestKey;
785                RTList<Voice>::Iterator itOldestVoice;
786    
787              midi_key_info_t* pKey = &pMIDIKeyInfo[pVoice->MIDIKey];              // Select one voice for voice stealing
788                switch (VOICE_STEAL_ALGORITHM) {
789    
790                    // try to pick the oldest voice on the key where the new
791                    // voice should be spawned, if there is no voice on that
792                    // key, or no voice left to kill there, then procceed with
793                    // 'oldestkey' algorithm
794                    case voice_steal_algo_keymask: {
795                        midi_key_info_t* pOldestKey = &pMIDIKeyInfo[itNoteOnEvent->Param.Note.Key];
796                        if (itLastStolenVoice) {
797                            itOldestVoice = itLastStolenVoice;
798                            ++itOldestVoice;
799                        }
800                        else { // no voice stolen in this audio fragment cycle yet
801                            itOldestVoice = pOldestKey->pActiveVoices->first();
802                        }
803                        if (itOldestVoice) {
804                            iuiOldestKey = pOldestKey->itSelf;
805                            break; // selection succeeded
806                        }
807                    } // no break - intentional !
808    
809                    // try to pick the oldest voice on the oldest active key
810                    // (caution: must stay after 'keymask' algorithm !)
811                    case voice_steal_algo_oldestkey: {
812                        if (itLastStolenVoice) {
813                            midi_key_info_t* pOldestKey = &pMIDIKeyInfo[*iuiLastStolenKey];
814                            itOldestVoice = itLastStolenVoice;
815                            ++itOldestVoice;
816                            if (!itOldestVoice) {
817                                iuiOldestKey = iuiLastStolenKey;
818                                ++iuiOldestKey;
819                                if (iuiOldestKey) {
820                                    midi_key_info_t* pOldestKey = &pMIDIKeyInfo[*iuiOldestKey];
821                                    itOldestVoice = pOldestKey->pActiveVoices->first();
822                                }
823                                else {
824                                    dmsg(1,("gig::Engine: Warning, too less voices, even for voice stealing! - Better recompile with higher MAX_AUDIO_VOICES.\n"));
825                                    return;
826                                }
827                            }
828                            else iuiOldestKey = iuiLastStolenKey;
829                        }
830                        else { // no voice stolen in this audio fragment cycle yet
831                            iuiOldestKey = pActiveKeys->first();
832                            midi_key_info_t* pOldestKey = &pMIDIKeyInfo[*iuiOldestKey];
833                            itOldestVoice = pOldestKey->pActiveVoices->first();
834                        }
835                        break;
836                    }
837    
838                    // don't steal anything
839                    case voice_steal_algo_none:
840                    default: {
841                        dmsg(1,("No free voice (voice stealing disabled)!\n"));
842                        return;
843                    }
844                }
845    
846                //FIXME: can be removed, just a sanity check for debugging
847                if (!itOldestVoice->IsActive()) dmsg(1,("gig::Engine: ERROR, tried to steal a voice which was not active !!!\n"));
848    
849                // now kill the selected voice
850                itOldestVoice->Kill(itNoteOnEvent);
851                // remember which voice on which key we stole, so we can simply proceed for the next voice stealing
852                this->itLastStolenVoice = itOldestVoice;
853                this->iuiLastStolenKey = iuiOldestKey;
854            }
855            else dmsg(1,("Event pool emtpy!\n"));
856        }
857    
858        /**
859         *  Removes the given voice from the MIDI key's list of active voices.
860         *  This method will be called when a voice went inactive, e.g. because
861         *  it finished to playback its sample, finished its release stage or
862         *  just was killed.
863         *
864         *  @param itVoice - points to the voice to be freed
865         */
866        void Engine::FreeVoice(Pool<Voice>::Iterator& itVoice) {
867            if (itVoice) {
868                midi_key_info_t* pKey = &pMIDIKeyInfo[itVoice->MIDIKey];
869    
870                uint keygroup = itVoice->KeyGroup;
871    
872              // free the voice object              // free the voice object
873              pVoicePool->free(pVoice);              pVoicePool->free(itVoice);
874    
875              // check if there are no voices left on the MIDI key and update the key info if so              // if no other voices left and member of a key group, remove from key group
876              if (pKey->pActiveVoices->is_empty()) {              if (pKey->pActiveVoices->isEmpty() && keygroup) {
877                  pKey->Active = false;                  uint** ppKeyGroup = &ActiveKeyGroups[keygroup];
878                  pActiveKeys->free(pKey->pSelf); // remove key from list of active keys                  if (*ppKeyGroup == &*pKey->itSelf) *ppKeyGroup = NULL; // remove key from key group
                 pKey->pSelf = NULL;  
                 dmsg(3,("Key has no more voices now\n"));  
879              }              }
880          }          }
881          else std::cerr << "Couldn't release voice! (pVoice == NULL)\n" << std::flush;          else std::cerr << "Couldn't release voice! (!itVoice)\n" << std::flush;
882        }
883    
884        /**
885         *  Called when there's no more voice left on a key, this call will
886         *  update the key info respectively.
887         *
888         *  @param pKey - key which is now inactive
889         */
890        void Engine::FreeKey(midi_key_info_t* pKey) {
891            if (pKey->pActiveVoices->isEmpty()) {
892                pKey->Active = false;
893                pActiveKeys->free(pKey->itSelf); // remove key from list of active keys
894                pKey->itSelf = RTList<uint>::Iterator();
895                pKey->ReleaseTrigger = false;
896                pKey->pEvents->clear();
897                dmsg(3,("Key has no more voices now\n"));
898            }
899            else dmsg(1,("gig::Engine: Oops, tried to free a key which contains voices.\n"));
900      }      }
901    
902      /**      /**
903       *  Reacts on supported control change commands (e.g. pitch bend wheel,       *  Reacts on supported control change commands (e.g. pitch bend wheel,
904       *  modulation wheel, aftertouch).       *  modulation wheel, aftertouch).
905       *       *
906       *  @param pControlChangeEvent - controller, value and time stamp of the event       *  @param itControlChangeEvent - controller, value and time stamp of the event
907       */       */
908      void Engine::ProcessControlChange(Event* pControlChangeEvent) {      void Engine::ProcessControlChange(Pool<Event>::Iterator& itControlChangeEvent) {
909          dmsg(4,("Engine::ContinuousController cc=%d v=%d\n", pControlChangeEvent->Controller, pControlChangeEvent->Value));          dmsg(4,("Engine::ContinuousController cc=%d v=%d\n", itControlChangeEvent->Param.CC.Controller, itControlChangeEvent->Param.CC.Value));
910    
911          switch (pControlChangeEvent->Controller) {          switch (itControlChangeEvent->Param.CC.Controller) {
912              case 64: {              case 64: {
913                  if (pControlChangeEvent->Value >= 64 && !SustainPedal) {                  if (itControlChangeEvent->Param.CC.Value >= 64 && !SustainPedal) {
914                      dmsg(4,("PEDAL DOWN\n"));                      dmsg(4,("PEDAL DOWN\n"));
915                      SustainPedal = true;                      SustainPedal = true;
916    
917                      // cancel release process of voices if necessary                      // cancel release process of voices if necessary
918                      uint* piKey = pActiveKeys->first();                      RTList<uint>::Iterator iuiKey = pActiveKeys->first();
919                      if (piKey) {                      if (iuiKey) {
920                          pControlChangeEvent->Type = Event::type_cancel_release; // transform event type                          itControlChangeEvent->Type = Event::type_cancel_release; // transform event type
921                          while (piKey) {                          while (iuiKey) {
922                              midi_key_info_t* pKey = &pMIDIKeyInfo[*piKey];                              midi_key_info_t* pKey = &pMIDIKeyInfo[*iuiKey];
923                              pActiveKeys->set_current(piKey);                              ++iuiKey;
                             piKey = pActiveKeys->next();  
924                              if (!pKey->KeyPressed) {                              if (!pKey->KeyPressed) {
925                                  Event* pNewEvent = pKey->pEvents->alloc();                                  RTList<Event>::Iterator itNewEvent = pKey->pEvents->allocAppend();
926                                  if (pNewEvent) *pNewEvent = *pControlChangeEvent; // copy event to the key's own event list                                  if (itNewEvent) *itNewEvent = *itControlChangeEvent; // copy event to the key's own event list
927                                  else dmsg(1,("Event pool emtpy!\n"));                                  else dmsg(1,("Event pool emtpy!\n"));
928                              }                              }
929                          }                          }
930                      }                      }
931                  }                  }
932                  if (pControlChangeEvent->Value < 64 && SustainPedal) {                  if (itControlChangeEvent->Param.CC.Value < 64 && SustainPedal) {
933                      dmsg(4,("PEDAL UP\n"));                      dmsg(4,("PEDAL UP\n"));
934                      SustainPedal = false;                      SustainPedal = false;
935    
936                      // release voices if their respective key is not pressed                      // release voices if their respective key is not pressed
937                      uint* piKey = pActiveKeys->first();                      RTList<uint>::Iterator iuiKey = pActiveKeys->first();
938                      if (piKey) {                      if (iuiKey) {
939                          pControlChangeEvent->Type = Event::type_release; // transform event type                          itControlChangeEvent->Type = Event::type_release; // transform event type
940                          while (piKey) {                          while (iuiKey) {
941                              midi_key_info_t* pKey = &pMIDIKeyInfo[*piKey];                              midi_key_info_t* pKey = &pMIDIKeyInfo[*iuiKey];
942                              pActiveKeys->set_current(piKey);                              ++iuiKey;
                             piKey = pActiveKeys->next();  
943                              if (!pKey->KeyPressed) {                              if (!pKey->KeyPressed) {
944                                  Event* pNewEvent = pKey->pEvents->alloc();                                  RTList<Event>::Iterator itNewEvent = pKey->pEvents->allocAppend();
945                                  if (pNewEvent) *pNewEvent = *pControlChangeEvent; // copy event to the key's own event list                                  if (itNewEvent) *itNewEvent = *itControlChangeEvent; // copy event to the key's own event list
946                                  else dmsg(1,("Event pool emtpy!\n"));                                  else dmsg(1,("Event pool emtpy!\n"));
947                              }                              }
948                          }                          }
# Line 633  namespace LinuxSampler { namespace gig { Line 953  namespace LinuxSampler { namespace gig {
953          }          }
954    
955          // update controller value in the engine's controller table          // update controller value in the engine's controller table
956          ControllerTable[pControlChangeEvent->Controller] = pControlChangeEvent->Value;          ControllerTable[itControlChangeEvent->Param.CC.Controller] = itControlChangeEvent->Param.CC.Value;
957    
958          // move event from the unsorted event list to the control change event list          // move event from the unsorted event list to the control change event list
959          pEvents->move(pControlChangeEvent, pCCEvents);          itControlChangeEvent.moveToEndOf(pCCEvents);
960        }
961    
962        /**
963         *  Reacts on MIDI system exclusive messages.
964         *
965         *  @param itSysexEvent - sysex data size and time stamp of the sysex event
966         */
967        void Engine::ProcessSysex(Pool<Event>::Iterator& itSysexEvent) {
968            RingBuffer<uint8_t>::NonVolatileReader reader = pSysexBuffer->get_non_volatile_reader();
969    
970            uint8_t exclusive_status, id;
971            if (!reader.pop(&exclusive_status)) goto free_sysex_data;
972            if (!reader.pop(&id))               goto free_sysex_data;
973            if (exclusive_status != 0xF0)       goto free_sysex_data;
974    
975            switch (id) {
976                case 0x41: { // Roland
977                    uint8_t device_id, model_id, cmd_id;
978                    if (!reader.pop(&device_id)) goto free_sysex_data;
979                    if (!reader.pop(&model_id))  goto free_sysex_data;
980                    if (!reader.pop(&cmd_id))    goto free_sysex_data;
981                    if (model_id != 0x42 /*GS*/) goto free_sysex_data;
982                    if (cmd_id != 0x12 /*DT1*/)  goto free_sysex_data;
983    
984                    // command address
985                    uint8_t addr[3]; // 2 byte addr MSB, followed by 1 byte addr LSB)
986                    const RingBuffer<uint8_t>::NonVolatileReader checksum_reader = reader; // so we can calculate the check sum later
987                    if (reader.read(&addr[0], 3) != 3) goto free_sysex_data;
988                    if (addr[0] == 0x40 && addr[1] == 0x00) { // System Parameters
989                    }
990                    else if (addr[0] == 0x40 && addr[1] == 0x01) { // Common Parameters
991                    }
992                    else if (addr[0] == 0x40 && (addr[1] & 0xf0) == 0x10) { // Part Parameters (1)
993                        switch (addr[3]) {
994                            case 0x40: { // scale tuning
995                                uint8_t scale_tunes[12]; // detuning of all 12 semitones of an octave
996                                if (reader.read(&scale_tunes[0], 12) != 12) goto free_sysex_data;
997                                uint8_t checksum;
998                                if (!reader.pop(&checksum))                      goto free_sysex_data;
999                                if (GSCheckSum(checksum_reader, 12) != checksum) goto free_sysex_data;
1000                                for (int i = 0; i < 12; i++) scale_tunes[i] -= 64;
1001                                AdjustScale((int8_t*) scale_tunes);
1002                                break;
1003                            }
1004                        }
1005                    }
1006                    else if (addr[0] == 0x40 && (addr[1] & 0xf0) == 0x20) { // Part Parameters (2)
1007                    }
1008                    else if (addr[0] == 0x41) { // Drum Setup Parameters
1009                    }
1010                    break;
1011                }
1012            }
1013    
1014            free_sysex_data: // finally free sysex data
1015            pSysexBuffer->increment_read_ptr(itSysexEvent->Param.Sysex.Size);
1016        }
1017    
1018        /**
1019         * Calculates the Roland GS sysex check sum.
1020         *
1021         * @param AddrReader - reader which currently points to the first GS
1022         *                     command address byte of the GS sysex message in
1023         *                     question
1024         * @param DataSize   - size of the GS message data (in bytes)
1025         */
1026        uint8_t Engine::GSCheckSum(const RingBuffer<uint8_t>::NonVolatileReader AddrReader, uint DataSize) {
1027            RingBuffer<uint8_t>::NonVolatileReader reader = AddrReader;
1028            uint bytes = 3 /*addr*/ + DataSize;
1029            uint8_t addr_and_data[bytes];
1030            reader.read(&addr_and_data[0], bytes);
1031            uint8_t sum = 0;
1032            for (uint i = 0; i < bytes; i++) sum += addr_and_data[i];
1033            return 128 - sum % 128;
1034        }
1035    
1036        /**
1037         * Allows to tune each of the twelve semitones of an octave.
1038         *
1039         * @param ScaleTunes - detuning of all twelve semitones (in cents)
1040         */
1041        void Engine::AdjustScale(int8_t ScaleTunes[12]) {
1042            memcpy(&this->ScaleTuning[0], &ScaleTunes[0], 12); //TODO: currently not sample accurate
1043      }      }
1044    
1045      /**      /**
# Line 662  namespace LinuxSampler { namespace gig { Line 1065  namespace LinuxSampler { namespace gig {
1065          GlobalVolume = f;          GlobalVolume = f;
1066      }      }
1067    
1068        uint Engine::Channels() {
1069            return 2;
1070        }
1071    
1072        void Engine::SetOutputChannel(uint EngineAudioChannel, uint AudioDeviceChannel) {
1073            AudioChannel* pChannel = pAudioOutputDevice->Channel(AudioDeviceChannel);
1074            if (!pChannel) throw AudioOutputException("Invalid audio output device channel " + ToString(AudioDeviceChannel));
1075            switch (EngineAudioChannel) {
1076                case 0: // left output channel
1077                    pOutputLeft = pChannel->Buffer();
1078                    AudioDeviceChannelLeft = AudioDeviceChannel;
1079                    break;
1080                case 1: // right output channel
1081                    pOutputRight = pChannel->Buffer();
1082                    AudioDeviceChannelRight = AudioDeviceChannel;
1083                    break;
1084                default:
1085                    throw AudioOutputException("Invalid engine audio channel " + ToString(EngineAudioChannel));
1086            }
1087        }
1088    
1089        int Engine::OutputChannel(uint EngineAudioChannel) {
1090            switch (EngineAudioChannel) {
1091                case 0: // left channel
1092                    return AudioDeviceChannelLeft;
1093                case 1: // right channel
1094                    return AudioDeviceChannelRight;
1095                default:
1096                    throw AudioOutputException("Invalid engine audio channel " + ToString(EngineAudioChannel));
1097            }
1098        }
1099    
1100      uint Engine::VoiceCount() {      uint Engine::VoiceCount() {
1101          return ActiveVoiceCount;          return ActiveVoiceCount;
1102      }      }
# Line 690  namespace LinuxSampler { namespace gig { Line 1125  namespace LinuxSampler { namespace gig {
1125          return pDiskThread->GetBufferFillPercentage();          return pDiskThread->GetBufferFillPercentage();
1126      }      }
1127    
1128        String Engine::EngineName() {
1129            return "GigEngine";
1130        }
1131    
1132        String Engine::InstrumentFileName() {
1133            return InstrumentFile;
1134        }
1135    
1136        int Engine::InstrumentIndex() {
1137            return InstrumentIdx;
1138        }
1139    
1140        int Engine::InstrumentStatus() {
1141            return InstrumentStat;
1142        }
1143    
1144      String Engine::Description() {      String Engine::Description() {
1145          return "Gigasampler Engine";          return "Gigasampler Engine";
1146      }      }
1147    
1148      String Engine::Version() {      String Engine::Version() {
1149          return "0.0.1-0cvs20040423";          String s = "$Revision: 1.17 $";
1150            return s.substr(11, s.size() - 13); // cut dollar signs, spaces and CVS macro keyword
1151      }      }
1152    
1153  }} // namespace LinuxSampler::gig  }} // namespace LinuxSampler::gig
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