/[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 319 by schoenebeck, Mon Dec 13 00:46:42 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    #include <malloc.h>
30    
31  namespace LinuxSampler { namespace gig {  namespace LinuxSampler { namespace gig {
32    
# Line 37  namespace LinuxSampler { namespace gig { Line 39  namespace LinuxSampler { namespace gig {
39          pAudioOutputDevice = NULL;          pAudioOutputDevice = NULL;
40          pDiskThread        = NULL;          pDiskThread        = NULL;
41          pEventGenerator    = NULL;          pEventGenerator    = NULL;
42          pEventQueue        = new RingBuffer<Event>(MAX_EVENTS_PER_FRAGMENT);          pSysexBuffer       = new RingBuffer<uint8_t>(SYSEX_BUFFER_SIZE, 0);
43          pEventPool         = new RTELMemoryPool<Event>(MAX_EVENTS_PER_FRAGMENT);          pEventQueue        = new RingBuffer<Event>(MAX_EVENTS_PER_FRAGMENT, 0);
44          pVoicePool         = new RTELMemoryPool<Voice>(MAX_AUDIO_VOICES);          pEventPool         = new Pool<Event>(MAX_EVENTS_PER_FRAGMENT);
45          pActiveKeys        = new RTELMemoryPool<uint>(128);          pVoicePool         = new Pool<Voice>(MAX_AUDIO_VOICES);
46          pEvents            = new RTEList<Event>(pEventPool);          pActiveKeys        = new Pool<uint>(128);
47          pCCEvents          = new RTEList<Event>(pEventPool);          pVoiceStealingQueue = new RTList<Event>(pEventPool);
48            pEvents            = new RTList<Event>(pEventPool);
49            pCCEvents          = new RTList<Event>(pEventPool);
50          for (uint i = 0; i < Event::destination_count; i++) {          for (uint i = 0; i < Event::destination_count; i++) {
51              pSynthesisEvents[i] = new RTEList<Event>(pEventPool);              pSynthesisEvents[i] = new RTList<Event>(pEventPool);
52          }          }
53          for (uint i = 0; i < 128; i++) {          for (uint i = 0; i < 128; i++) {
54              pMIDIKeyInfo[i].pActiveVoices = new RTEList<Voice>(pVoicePool);              pMIDIKeyInfo[i].pActiveVoices  = new RTList<Voice>(pVoicePool);
55              pMIDIKeyInfo[i].KeyPressed    = false;              pMIDIKeyInfo[i].KeyPressed     = false;
56              pMIDIKeyInfo[i].Active        = false;              pMIDIKeyInfo[i].Active         = false;
57              pMIDIKeyInfo[i].pSelf         = NULL;              pMIDIKeyInfo[i].ReleaseTrigger = false;
58              pMIDIKeyInfo[i].pEvents       = new RTEList<Event>(pEventPool);              pMIDIKeyInfo[i].pEvents        = new RTList<Event>(pEventPool);
59          }          }
60          for (Voice* pVoice = pVoicePool->alloc(); pVoice; pVoice = pVoicePool->alloc()) {          for (RTList<Voice>::Iterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {
61              pVoice->SetEngine(this);              iterVoice->SetEngine(this);
62          }          }
63          pVoicePool->clear();          pVoicePool->clear();
64    
# Line 62  namespace LinuxSampler { namespace gig { Line 66  namespace LinuxSampler { namespace gig {
66          pBasicFilterParameters  = NULL;          pBasicFilterParameters  = NULL;
67          pMainFilterParameters   = NULL;          pMainFilterParameters   = NULL;
68    
69            InstrumentIdx = -1;
70            InstrumentStat = -1;
71    
72            AudioDeviceChannelLeft  = -1;
73            AudioDeviceChannelRight = -1;
74    
75          ResetInternal();          ResetInternal();
76      }      }
77    
# Line 86  namespace LinuxSampler { namespace gig { Line 96  namespace LinuxSampler { namespace gig {
96          if (pEventPool)  delete pEventPool;          if (pEventPool)  delete pEventPool;
97          if (pVoicePool)  delete pVoicePool;          if (pVoicePool)  delete pVoicePool;
98          if (pActiveKeys) delete pActiveKeys;          if (pActiveKeys) delete pActiveKeys;
99            if (pSysexBuffer) delete pSysexBuffer;
100          if (pEventGenerator) delete pEventGenerator;          if (pEventGenerator) delete pEventGenerator;
101          if (pMainFilterParameters) delete[] pMainFilterParameters;          if (pMainFilterParameters) delete[] pMainFilterParameters;
102          if (pBasicFilterParameters) delete[] pBasicFilterParameters;          if (pBasicFilterParameters) delete[] pBasicFilterParameters;
103          if (pSynthesisParameters[0]) delete[] pSynthesisParameters[0];          if (pSynthesisParameters[0]) free(pSynthesisParameters[0]);
104            if (pVoiceStealingQueue) delete pVoiceStealingQueue;
105      }      }
106    
107      void Engine::Enable() {      void Engine::Enable() {
# Line 146  namespace LinuxSampler { namespace gig { Line 158  namespace LinuxSampler { namespace gig {
158          SustainPedal        = false;          SustainPedal        = false;
159          ActiveVoiceCount    = 0;          ActiveVoiceCount    = 0;
160          ActiveVoiceCountMax = 0;          ActiveVoiceCountMax = 0;
161            GlobalVolume        = 1.0;
162    
163            // reset voice stealing parameters
164            itLastStolenVoice = RTList<Voice>::Iterator();
165            iuiLastStolenKey  = RTList<uint>::Iterator();
166            pVoiceStealingQueue->clear();
167    
168            // reset to normal chromatic scale (means equal temper)
169            memset(&ScaleTuning[0], 0x00, 12);
170    
171          // set all MIDI controller values to zero          // set all MIDI controller values to zero
172          memset(ControllerTable, 0x00, 128);          memset(ControllerTable, 0x00, 128);
# Line 154  namespace LinuxSampler { namespace gig { Line 175  namespace LinuxSampler { namespace gig {
175          for (uint i = 0; i < 128; i++) {          for (uint i = 0; i < 128; i++) {
176              pMIDIKeyInfo[i].pActiveVoices->clear();              pMIDIKeyInfo[i].pActiveVoices->clear();
177              pMIDIKeyInfo[i].pEvents->clear();              pMIDIKeyInfo[i].pEvents->clear();
178              pMIDIKeyInfo[i].KeyPressed = false;              pMIDIKeyInfo[i].KeyPressed     = false;
179              pMIDIKeyInfo[i].Active     = false;              pMIDIKeyInfo[i].Active         = false;
180              pMIDIKeyInfo[i].pSelf      = NULL;              pMIDIKeyInfo[i].ReleaseTrigger = false;
181                pMIDIKeyInfo[i].itSelf         = Pool<uint>::Iterator();
182          }          }
183    
184            // reset all key groups
185            map<uint,uint*>::iterator iter = ActiveKeyGroups.begin();
186            for (; iter != ActiveKeyGroups.end(); iter++) iter->second = NULL;
187    
188          // reset all voices          // reset all voices
189          for (Voice* pVoice = pVoicePool->alloc(); pVoice; pVoice = pVoicePool->alloc()) {          for (RTList<Voice>::Iterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {
190              pVoice->Reset();              iterVoice->Reset();
191          }          }
192          pVoicePool->clear();          pVoicePool->clear();
193    
# Line 195  namespace LinuxSampler { namespace gig { Line 221  namespace LinuxSampler { namespace gig {
221              Instruments.HandBack(pInstrument, this);              Instruments.HandBack(pInstrument, this);
222          }          }
223    
224            InstrumentFile = FileName;
225            InstrumentIdx = Instrument;
226            InstrumentStat = 0;
227    
228            // delete all key groups
229            ActiveKeyGroups.clear();
230    
231          // request gig instrument from instrument manager          // request gig instrument from instrument manager
232          try {          try {
233              instrument_id_t instrid;              instrument_id_t instrid;
# Line 202  namespace LinuxSampler { namespace gig { Line 235  namespace LinuxSampler { namespace gig {
235              instrid.iInstrument = Instrument;              instrid.iInstrument = Instrument;
236              pInstrument = Instruments.Borrow(instrid, this);              pInstrument = Instruments.Borrow(instrid, this);
237              if (!pInstrument) {              if (!pInstrument) {
238                    InstrumentStat = -1;
239                  dmsg(1,("no instrument loaded!!!\n"));                  dmsg(1,("no instrument loaded!!!\n"));
240                  exit(EXIT_FAILURE);                  exit(EXIT_FAILURE);
241              }              }
242          }          }
243          catch (RIFF::Exception e) {          catch (RIFF::Exception e) {
244                InstrumentStat = -2;
245              String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message;              String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message;
246              throw LinuxSamplerException(msg);              throw LinuxSamplerException(msg);
247          }          }
248          catch (InstrumentResourceManagerException e) {          catch (InstrumentResourceManagerException e) {
249                InstrumentStat = -3;
250              String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message();              String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message();
251              throw LinuxSamplerException(msg);              throw LinuxSamplerException(msg);
252          }          }
253          catch (...) {          catch (...) {
254                InstrumentStat = -4;
255              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.");
256          }          }
257    
258            // rebuild ActiveKeyGroups map with key groups of current instrument
259            for (::gig::Region* pRegion = pInstrument->GetFirstRegion(); pRegion; pRegion = pInstrument->GetNextRegion())
260                if (pRegion->KeyGroup) ActiveKeyGroups[pRegion->KeyGroup] = NULL;
261    
262            InstrumentStat = 100;
263    
264          // inform audio driver for the need of two channels          // inform audio driver for the need of two channels
265          try {          try {
266              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 290  namespace LinuxSampler { namespace gig {
290       * update process was completed, so we can continue with playback.       * update process was completed, so we can continue with playback.
291       */       */
292      void Engine::ResourceUpdated(::gig::Instrument* pOldResource, ::gig::Instrument* pNewResource, void* pUpdateArg) {      void Engine::ResourceUpdated(::gig::Instrument* pOldResource, ::gig::Instrument* pNewResource, void* pUpdateArg) {
293          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())
294          Enable();          Enable();
295      }      }
296    
# Line 265  namespace LinuxSampler { namespace gig { Line 308  namespace LinuxSampler { namespace gig {
308              throw LinuxSamplerException(msg);              throw LinuxSamplerException(msg);
309          }          }
310    
311            this->AudioDeviceChannelLeft  = 0;
312            this->AudioDeviceChannelRight = 1;
313            this->pOutputLeft             = pAudioOutputDevice->Channel(0)->Buffer();
314            this->pOutputRight            = pAudioOutputDevice->Channel(1)->Buffer();
315            this->MaxSamplesPerCycle      = pAudioOutputDevice->MaxSamplesPerCycle();
316            this->SampleRate              = pAudioOutputDevice->SampleRate();
317    
318            // FIXME: audio drivers with varying fragment sizes might be a problem here
319            MaxFadeOutPos = MaxSamplesPerCycle - int(double(SampleRate) * EG_MIN_RELEASE_TIME) - 1;
320            if (MaxFadeOutPos < 0)
321                throw LinuxSamplerException("EG_MIN_RELEASE_TIME in EGADSR.h to big for current audio fragment size / sampling rate!");
322    
323          // (re)create disk thread          // (re)create disk thread
324          if (this->pDiskThread) {          if (this->pDiskThread) {
325              this->pDiskThread->StopThread();              this->pDiskThread->StopThread();
# Line 276  namespace LinuxSampler { namespace gig { Line 331  namespace LinuxSampler { namespace gig {
331              exit(EXIT_FAILURE);              exit(EXIT_FAILURE);
332          }          }
333    
334          for (Voice* pVoice = pVoicePool->alloc(); pVoice; pVoice = pVoicePool->alloc()) {          for (RTList<Voice>::Iterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {
335              pVoice->pDiskThread = this->pDiskThread;              iterVoice->pDiskThread = this->pDiskThread;
             pVoice->SetOutput(pAudioOut);  
336              dmsg(3,("d"));              dmsg(3,("d"));
337          }          }
338          pVoicePool->clear();          pVoicePool->clear();
# Line 288  namespace LinuxSampler { namespace gig { Line 342  namespace LinuxSampler { namespace gig {
342          pEventGenerator = new EventGenerator(pAudioOut->SampleRate());          pEventGenerator = new EventGenerator(pAudioOut->SampleRate());
343    
344          // (re)allocate synthesis parameter matrix          // (re)allocate synthesis parameter matrix
345          if (pSynthesisParameters[0]) delete[] pSynthesisParameters[0];          if (pSynthesisParameters[0]) free(pSynthesisParameters[0]);
346          pSynthesisParameters[0] = new float[Event::destination_count * pAudioOut->MaxSamplesPerCycle()];          pSynthesisParameters[0] = (float *) memalign(16,(Event::destination_count * sizeof(float) * pAudioOut->MaxSamplesPerCycle()));
347          for (int dst = 1; dst < Event::destination_count; dst++)          for (int dst = 1; dst < Event::destination_count; dst++)
348              pSynthesisParameters[dst] = pSynthesisParameters[dst - 1] + pAudioOut->MaxSamplesPerCycle();              pSynthesisParameters[dst] = pSynthesisParameters[dst - 1] + pAudioOut->MaxSamplesPerCycle();
349    
# Line 303  namespace LinuxSampler { namespace gig { Line 357  namespace LinuxSampler { namespace gig {
357          pDiskThread->StartThread();          pDiskThread->StartThread();
358          dmsg(1,("OK\n"));          dmsg(1,("OK\n"));
359    
360          for (Voice* pVoice = pVoicePool->first(); pVoice; pVoice = pVoicePool->next()) {          for (RTList<Voice>::Iterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {
361              if (!pVoice->pDiskThread) {              if (!iterVoice->pDiskThread) {
362                  dmsg(0,("Engine -> voice::trigger: !pDiskThread\n"));                  dmsg(0,("Engine -> voice::trigger: !pDiskThread\n"));
363                  exit(EXIT_FAILURE);                  exit(EXIT_FAILURE);
364              }              }
# Line 316  namespace LinuxSampler { namespace gig { Line 370  namespace LinuxSampler { namespace gig {
370              AudioOutputDevice* olddevice = pAudioOutputDevice;              AudioOutputDevice* olddevice = pAudioOutputDevice;
371              pAudioOutputDevice = NULL;              pAudioOutputDevice = NULL;
372              olddevice->Disconnect(this);              olddevice->Disconnect(this);
373                AudioDeviceChannelLeft  = -1;
374                AudioDeviceChannelRight = -1;
375          }          }
376      }      }
377    
# Line 343  namespace LinuxSampler { namespace gig { Line 399  namespace LinuxSampler { namespace gig {
399          }          }
400    
401    
402            // update time of start and end of this audio fragment (as events' time stamps relate to this)
403            pEventGenerator->UpdateFragmentTime(Samples);
404    
405    
406          // empty the event lists for the new fragment          // empty the event lists for the new fragment
407          pEvents->clear();          pEvents->clear();
408          pCCEvents->clear();          pCCEvents->clear();
409          for (uint i = 0; i < Event::destination_count; i++) {          for (uint i = 0; i < Event::destination_count; i++) {
410              pSynthesisEvents[i]->clear();              pSynthesisEvents[i]->clear();
411          }          }
412            {
413          // read and copy events from input queue              RTList<uint>::Iterator iuiKey = pActiveKeys->first();
414          Event event = pEventGenerator->CreateEvent();              RTList<uint>::Iterator end    = pActiveKeys->end();
415          while (true) {              for(; iuiKey != end; ++iuiKey) {
416              if (!pEventQueue->pop(&event)) break;                  pMIDIKeyInfo[*iuiKey].pEvents->clear(); // free all events on the key
417              pEvents->alloc_assign(event);              }
418          }          }
419    
420    
421          // update time of start and end of this audio fragment (as events' time stamps relate to this)          // get all events from the input event queue which belong to the current fragment
422          pEventGenerator->UpdateFragmentTime(Samples);          {
423                RingBuffer<Event>::NonVolatileReader eventQueueReader = pEventQueue->get_non_volatile_reader();
424                Event* pEvent;
425                while (true) {
426                    // get next event from input event queue
427                    if (!(pEvent = eventQueueReader.pop())) break;
428                    // if younger event reached, ignore that and all subsequent ones for now
429                    if (pEvent->FragmentPos() >= Samples) {
430                        eventQueueReader--;
431                        dmsg(2,("Younger Event, pos=%d ,Samples=%d!\n",pEvent->FragmentPos(),Samples));
432                        pEvent->ResetFragmentPos();
433                        break;
434                    }
435                    // copy event to internal event list
436                    if (pEvents->poolIsEmpty()) {
437                        dmsg(1,("Event pool emtpy!\n"));
438                        break;
439                    }
440                    *pEvents->allocAppend() = *pEvent;
441                }
442                eventQueueReader.free(); // free all copied events from input queue
443            }
444    
445    
446          // process events          // process events
447          Event* pNextEvent = pEvents->first();          {
448          while (pNextEvent) {              RTList<Event>::Iterator itEvent = pEvents->first();
449              Event* pEvent = pNextEvent;              RTList<Event>::Iterator end     = pEvents->end();
450              pEvents->set_current(pEvent);              for (; itEvent != end; ++itEvent) {
451              pNextEvent = pEvents->next();                  switch (itEvent->Type) {
452              switch (pEvent->Type) {                      case Event::type_note_on:
453                  case Event::type_note_on:                          dmsg(5,("Engine: Note on received\n"));
454                      dmsg(5,("Audio Thread: Note on received\n"));                          ProcessNoteOn(itEvent);
455                      ProcessNoteOn(pEvent);                          break;
456                      break;                      case Event::type_note_off:
457                  case Event::type_note_off:                          dmsg(5,("Engine: Note off received\n"));
458                      dmsg(5,("Audio Thread: Note off received\n"));                          ProcessNoteOff(itEvent);
459                      ProcessNoteOff(pEvent);                          break;
460                      break;                      case Event::type_control_change:
461                  case Event::type_control_change:                          dmsg(5,("Engine: MIDI CC received\n"));
462                      dmsg(5,("Audio Thread: MIDI CC received\n"));                          ProcessControlChange(itEvent);
463                      ProcessControlChange(pEvent);                          break;
464                      break;                      case Event::type_pitchbend:
465                  case Event::type_pitchbend:                          dmsg(5,("Engine: Pitchbend received\n"));
466                      dmsg(5,("Audio Thread: Pitchbend received\n"));                          ProcessPitchbend(itEvent);
467                      ProcessPitchbend(pEvent);                          break;
468                      break;                      case Event::type_sysex:
469                            dmsg(5,("Engine: Sysex received\n"));
470                            ProcessSysex(itEvent);
471                            break;
472                    }
473              }              }
474          }          }
475    
476    
         // render audio from all active voices  
477          int active_voices = 0;          int active_voices = 0;
478          uint* piKey = pActiveKeys->first();  
479          while (piKey) { // iterate through all active keys          // render audio from all active voices
480              midi_key_info_t* pKey = &pMIDIKeyInfo[*piKey];          {
481              pActiveKeys->set_current(piKey);              RTList<uint>::Iterator iuiKey = pActiveKeys->first();
482              piKey = pActiveKeys->next();              RTList<uint>::Iterator end    = pActiveKeys->end();
483                while (iuiKey != end) { // iterate through all active keys
484              Voice* pVoiceNext = pKey->pActiveVoices->first();                  midi_key_info_t* pKey = &pMIDIKeyInfo[*iuiKey];
485              while (pVoiceNext) { // iterate through all voices on this key                  ++iuiKey;
486                  // already get next voice on key  
487                  Voice* pVoice = pVoiceNext;                  RTList<Voice>::Iterator itVoice     = pKey->pActiveVoices->first();
488                  pKey->pActiveVoices->set_current(pVoice);                  RTList<Voice>::Iterator itVoicesEnd = pKey->pActiveVoices->end();
489                  pVoiceNext = pKey->pActiveVoices->next();                  for (; itVoice != itVoicesEnd; ++itVoice) { // iterate through all voices on this key
490                        // now render current voice
491                  // now render current voice                      itVoice->Render(Samples);
492                  pVoice->Render(Samples);                      if (itVoice->IsActive()) active_voices++; // still active
493                  if (pVoice->IsActive()) active_voices++; // still active                      else { // voice reached end, is now inactive
494                  else { // voice reached end, is now inactive                          FreeVoice(itVoice); // remove voice from the list of active voices
495                      KillVoice(pVoice); // remove voice from the list of active voices                      }
496                  }                  }
497              }              }
498              pKey->pEvents->clear(); // free all events on the key          }
499    
500    
501            // now render all postponed voices from voice stealing
502            {
503                RTList<Event>::Iterator itVoiceStealEvent = pVoiceStealingQueue->first();
504                RTList<Event>::Iterator end               = pVoiceStealingQueue->end();
505                for (; itVoiceStealEvent != end; ++itVoiceStealEvent) {
506                    Pool<Voice>::Iterator itNewVoice = LaunchVoice(itVoiceStealEvent, itVoiceStealEvent->Param.Note.Layer, itVoiceStealEvent->Param.Note.ReleaseTrigger, false);
507                    if (itNewVoice) {
508                        for (; itNewVoice; itNewVoice = itNewVoice->itChildVoice) {
509                            itNewVoice->Render(Samples);
510                            if (itNewVoice->IsActive()) active_voices++; // still active
511                            else { // voice reached end, is now inactive
512                                FreeVoice(itNewVoice); // remove voice from the list of active voices
513                            }
514                        }
515                    }
516                    else dmsg(1,("gig::Engine: ERROR, voice stealing didn't work out!\n"));
517                }
518            }
519            // reset voice stealing for the new fragment
520            pVoiceStealingQueue->clear();
521            itLastStolenVoice = RTList<Voice>::Iterator();
522            iuiLastStolenKey  = RTList<uint>::Iterator();
523    
524    
525            // free all keys which have no active voices left
526            {
527                RTList<uint>::Iterator iuiKey = pActiveKeys->first();
528                RTList<uint>::Iterator end    = pActiveKeys->end();
529                while (iuiKey != end) { // iterate through all active keys
530                    midi_key_info_t* pKey = &pMIDIKeyInfo[*iuiKey];
531                    ++iuiKey;
532                    if (pKey->pActiveVoices->isEmpty()) FreeKey(pKey);
533                    #if DEVMODE
534                    else { // FIXME: should be removed before the final release (purpose: just a sanity check for debugging)
535                        RTList<Voice>::Iterator itVoice     = pKey->pActiveVoices->first();
536                        RTList<Voice>::Iterator itVoicesEnd = pKey->pActiveVoices->end();
537                        for (; itVoice != itVoicesEnd; ++itVoice) { // iterate through all voices on this key
538                            if (itVoice->itKillEvent) {
539                                dmsg(1,("gig::Engine: ERROR, killed voice survived !!!\n"));
540                            }
541                        }
542                    }
543                    #endif // DEVMODE
544                }
545          }          }
546    
547    
# Line 432  namespace LinuxSampler { namespace gig { Line 562  namespace LinuxSampler { namespace gig {
562       *  @param Velocity - MIDI velocity value of the triggered key       *  @param Velocity - MIDI velocity value of the triggered key
563       */       */
564      void Engine::SendNoteOn(uint8_t Key, uint8_t Velocity) {      void Engine::SendNoteOn(uint8_t Key, uint8_t Velocity) {
565          Event event    = pEventGenerator->CreateEvent();          Event event               = pEventGenerator->CreateEvent();
566          event.Type     = Event::type_note_on;          event.Type                = Event::type_note_on;
567          event.Key      = Key;          event.Param.Note.Key      = Key;
568          event.Velocity = Velocity;          event.Param.Note.Velocity = Velocity;
569          if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);          if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
570          else dmsg(1,("Engine: Input event queue full!"));          else dmsg(1,("Engine: Input event queue full!"));
571      }      }
# Line 448  namespace LinuxSampler { namespace gig { Line 578  namespace LinuxSampler { namespace gig {
578       *  @param Velocity - MIDI release velocity value of the released key       *  @param Velocity - MIDI release velocity value of the released key
579       */       */
580      void Engine::SendNoteOff(uint8_t Key, uint8_t Velocity) {      void Engine::SendNoteOff(uint8_t Key, uint8_t Velocity) {
581          Event event    = pEventGenerator->CreateEvent();          Event event               = pEventGenerator->CreateEvent();
582          event.Type     = Event::type_note_off;          event.Type                = Event::type_note_off;
583          event.Key      = Key;          event.Param.Note.Key      = Key;
584          event.Velocity = Velocity;          event.Param.Note.Velocity = Velocity;
585          if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);          if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
586          else dmsg(1,("Engine: Input event queue full!"));          else dmsg(1,("Engine: Input event queue full!"));
587      }      }
# Line 463  namespace LinuxSampler { namespace gig { Line 593  namespace LinuxSampler { namespace gig {
593       *  @param Pitch - MIDI pitch value (-8192 ... +8191)       *  @param Pitch - MIDI pitch value (-8192 ... +8191)
594       */       */
595      void Engine::SendPitchbend(int Pitch) {      void Engine::SendPitchbend(int Pitch) {
596          Event event = pEventGenerator->CreateEvent();          Event event             = pEventGenerator->CreateEvent();
597          event.Type  = Event::type_pitchbend;          event.Type              = Event::type_pitchbend;
598          event.Pitch = Pitch;          event.Param.Pitch.Pitch = Pitch;
599          if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);          if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
600          else dmsg(1,("Engine: Input event queue full!"));          else dmsg(1,("Engine: Input event queue full!"));
601      }      }
# Line 478  namespace LinuxSampler { namespace gig { Line 608  namespace LinuxSampler { namespace gig {
608       *  @param Value      - value of the control change       *  @param Value      - value of the control change
609       */       */
610      void Engine::SendControlChange(uint8_t Controller, uint8_t Value) {      void Engine::SendControlChange(uint8_t Controller, uint8_t Value) {
611          Event event      = pEventGenerator->CreateEvent();          Event event               = pEventGenerator->CreateEvent();
612          event.Type       = Event::type_control_change;          event.Type                = Event::type_control_change;
613          event.Controller = Controller;          event.Param.CC.Controller = Controller;
614          event.Value      = Value;          event.Param.CC.Value      = Value;
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,("Engine: Input event queue full!"));          else dmsg(1,("Engine: Input event queue full!"));
617      }      }
618    
619      /**      /**
620         *  Will be called by the MIDI input device whenever a MIDI system
621         *  exclusive message has arrived.
622         *
623         *  @param pData - pointer to sysex data
624         *  @param Size  - lenght of sysex data (in bytes)
625         */
626        void Engine::SendSysex(void* pData, uint Size) {
627            Event event             = pEventGenerator->CreateEvent();
628            event.Type              = Event::type_sysex;
629            event.Param.Sysex.Size  = Size;
630            if (pEventQueue->write_space() > 0) {
631                if (pSysexBuffer->write_space() >= Size) {
632                    // copy sysex data to input buffer
633                    uint toWrite = Size;
634                    uint8_t* pPos = (uint8_t*) pData;
635                    while (toWrite) {
636                        const uint writeNow = RTMath::Min(toWrite, pSysexBuffer->write_space_to_end());
637                        pSysexBuffer->write(pPos, writeNow);
638                        toWrite -= writeNow;
639                        pPos    += writeNow;
640    
641                    }
642                    // finally place sysex event into input event queue
643                    pEventQueue->push(&event);
644                }
645                else dmsg(1,("Engine: Sysex message too large (%d byte) for input buffer (%d byte)!",Size,SYSEX_BUFFER_SIZE));
646            }
647            else dmsg(1,("Engine: Input event queue full!"));
648        }
649    
650        /**
651       *  Assigns and triggers a new voice for the respective MIDI key.       *  Assigns and triggers a new voice for the respective MIDI key.
652       *       *
653       *  @param pNoteOnEvent - key, velocity and time stamp of the event       *  @param itNoteOnEvent - key, velocity and time stamp of the event
654       */       */
655      void Engine::ProcessNoteOn(Event* pNoteOnEvent) {      void Engine::ProcessNoteOn(Pool<Event>::Iterator& itNoteOnEvent) {
656          midi_key_info_t* pKey = &pMIDIKeyInfo[pNoteOnEvent->Key];          midi_key_info_t* pKey = &pMIDIKeyInfo[itNoteOnEvent->Param.Note.Key];
657    
658          pKey->KeyPressed = true; // the MIDI key was now pressed down          pKey->KeyPressed = true; // the MIDI key was now pressed down
659    
660          // cancel release process of voices on this key if needed          // cancel release process of voices on this key if needed
661          if (pKey->Active && !SustainPedal) {          if (pKey->Active && !SustainPedal) {
662              pNoteOnEvent->Type = Event::type_cancel_release; // transform event type              RTList<Event>::Iterator itCancelReleaseEvent = pKey->pEvents->allocAppend();
663              pEvents->move(pNoteOnEvent, pKey->pEvents); // move event to the key's own event list              if (itCancelReleaseEvent) {
664          }                  *itCancelReleaseEvent = *itNoteOnEvent;                  // copy event
665                    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;  
666              }              }
667                else dmsg(1,("Event pool emtpy!\n"));
668          }          }
669          else std::cerr << "No free voice!" << std::endl << std::flush;  
670            // move note on event to the key's own event list
671            RTList<Event>::Iterator itNoteOnEventOnKeyList = itNoteOnEvent.moveToEndOf(pKey->pEvents);
672    
673            // allocate and trigger a new voice for the key
674            LaunchVoice(itNoteOnEventOnKeyList, 0, false, true);
675      }      }
676    
677      /**      /**
# Line 525  namespace LinuxSampler { namespace gig { Line 680  namespace LinuxSampler { namespace gig {
680       *  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.
681       *  due to completion of sample playback).       *  due to completion of sample playback).
682       *       *
683       *  @param pNoteOffEvent - key, velocity and time stamp of the event       *  @param itNoteOffEvent - key, velocity and time stamp of the event
684       */       */
685      void Engine::ProcessNoteOff(Event* pNoteOffEvent) {      void Engine::ProcessNoteOff(Pool<Event>::Iterator& itNoteOffEvent) {
686          midi_key_info_t* pKey = &pMIDIKeyInfo[pNoteOffEvent->Key];          midi_key_info_t* pKey = &pMIDIKeyInfo[itNoteOffEvent->Param.Note.Key];
687    
688          pKey->KeyPressed = false; // the MIDI key was now released          pKey->KeyPressed = false; // the MIDI key was now released
689    
690          // release voices on this key if needed          // release voices on this key if needed
691          if (pKey->Active && !SustainPedal) {          if (pKey->Active && !SustainPedal) {
692              pNoteOffEvent->Type = Event::type_release; // transform event type              itNoteOffEvent->Type = Event::type_release; // transform event type
693              pEvents->move(pNoteOffEvent, pKey->pEvents); // move event to the key's own event list          }
694    
695            // move event to the key's own event list
696            RTList<Event>::Iterator itNoteOffEventOnKeyList = itNoteOffEvent.moveToEndOf(pKey->pEvents);
697    
698            // spawn release triggered voice(s) if needed
699            if (pKey->ReleaseTrigger) {
700                LaunchVoice(itNoteOffEventOnKeyList, 0, true, false); //FIXME: for the moment we don't perform voice stealing for release triggered samples
701                pKey->ReleaseTrigger = false;
702          }          }
703      }      }
704    
# Line 543  namespace LinuxSampler { namespace gig { Line 706  namespace LinuxSampler { namespace gig {
706       *  Moves pitchbend event from the general (input) event list to the pitch       *  Moves pitchbend event from the general (input) event list to the pitch
707       *  event list.       *  event list.
708       *       *
709       *  @param pPitchbendEvent - absolute pitch value and time stamp of the event       *  @param itPitchbendEvent - absolute pitch value and time stamp of the event
710         */
711        void Engine::ProcessPitchbend(Pool<Event>::Iterator& itPitchbendEvent) {
712            this->Pitch = itPitchbendEvent->Param.Pitch.Pitch; // store current pitch value
713            itPitchbendEvent.moveToEndOf(pSynthesisEvents[Event::destination_vco]);
714        }
715    
716        /**
717         *  Allocates and triggers a new voice. This method will usually be
718         *  called by the ProcessNoteOn() method and by the voices itself
719         *  (e.g. to spawn further voices on the same key for layered sounds).
720         *
721         *  @param itNoteOnEvent       - key, velocity and time stamp of the event
722         *  @param iLayer              - layer index for the new voice (optional - only
723         *                               in case of layered sounds of course)
724         *  @param ReleaseTriggerVoice - if new voice is a release triggered voice
725         *                               (optional, default = false)
726         *  @param VoiceStealing       - if voice stealing should be performed
727         *                               when there is no free voice
728         *                               (optional, default = true)
729         *  @returns pointer to new voice or NULL if there was no free voice or
730         *           if an error occured while trying to trigger the new voice
731         */
732        Pool<Voice>::Iterator Engine::LaunchVoice(Pool<Event>::Iterator& itNoteOnEvent, int iLayer, bool ReleaseTriggerVoice, bool VoiceStealing) {
733            midi_key_info_t* pKey = &pMIDIKeyInfo[itNoteOnEvent->Param.Note.Key];
734    
735            // allocate a new voice for the key
736            Pool<Voice>::Iterator itNewVoice = pKey->pActiveVoices->allocAppend();
737            if (itNewVoice) {
738                // launch the new voice
739                if (itNewVoice->Trigger(itNoteOnEvent, this->Pitch, this->pInstrument, iLayer, ReleaseTriggerVoice, VoiceStealing) < 0) {
740                    dmsg(1,("Triggering new voice failed!\n"));
741                    pKey->pActiveVoices->free(itNewVoice);
742                }
743                else { // on success
744                    uint** ppKeyGroup = NULL;
745                    if (itNewVoice->KeyGroup) { // if this voice / key belongs to a key group
746                        ppKeyGroup = &ActiveKeyGroups[itNewVoice->KeyGroup];
747                        if (*ppKeyGroup) { // if there's already an active key in that key group
748                            midi_key_info_t* pOtherKey = &pMIDIKeyInfo[**ppKeyGroup];
749                            // kill all voices on the (other) key
750                            RTList<Voice>::Iterator itVoiceToBeKilled = pOtherKey->pActiveVoices->first();
751                            RTList<Voice>::Iterator end               = pOtherKey->pActiveVoices->end();
752                            for (; itVoiceToBeKilled != end; ++itVoiceToBeKilled) {
753                                if (itVoiceToBeKilled->Type != Voice::type_release_trigger) itVoiceToBeKilled->Kill(itNoteOnEvent);
754                            }
755                        }
756                    }
757                    if (!pKey->Active) { // mark as active key
758                        pKey->Active = true;
759                        pKey->itSelf = pActiveKeys->allocAppend();
760                        *pKey->itSelf = itNoteOnEvent->Param.Note.Key;
761                    }
762                    if (itNewVoice->KeyGroup) {
763                        *ppKeyGroup = &*pKey->itSelf; // put key as the (new) active key to its key group
764                    }
765                    if (itNewVoice->Type == Voice::type_release_trigger_required) pKey->ReleaseTrigger = true; // mark key for the need of release triggered voice(s)
766                    return itNewVoice; // success
767                }
768            }
769            else if (VoiceStealing) {
770                // first, get total amount of required voices (dependant on amount of layers)
771                ::gig::Region* pRegion = pInstrument->GetRegion(itNoteOnEvent->Param.Note.Key);
772                if (!pRegion) return Pool<Voice>::Iterator(); // nothing defined for this MIDI key, so no voice needed
773                int voicesRequired = pRegion->Layers;
774    
775                // now steal the (remaining) amount of voices
776                for (int i = iLayer; i < voicesRequired; i++)
777                    StealVoice(itNoteOnEvent);
778    
779                // put note-on event into voice-stealing queue, so it will be reprocessed after killed voice died
780                RTList<Event>::Iterator itStealEvent = pVoiceStealingQueue->allocAppend();
781                if (itStealEvent) {
782                    *itStealEvent = *itNoteOnEvent; // copy event
783                    itStealEvent->Param.Note.Layer = iLayer;
784                    itStealEvent->Param.Note.ReleaseTrigger = ReleaseTriggerVoice;
785                }
786                else dmsg(1,("Voice stealing queue full!\n"));
787            }
788    
789            return Pool<Voice>::Iterator(); // no free voice or error
790        }
791    
792        /**
793         *  Will be called by LaunchVoice() method in case there are no free
794         *  voices left. This method will select and kill one old voice for
795         *  voice stealing and postpone the note-on event until the selected
796         *  voice actually died.
797         *
798         *  @param itNoteOnEvent - key, velocity and time stamp of the event
799       */       */
800      void Engine::ProcessPitchbend(Event* pPitchbendEvent) {      void Engine::StealVoice(Pool<Event>::Iterator& itNoteOnEvent) {
801          this->Pitch = pPitchbendEvent->Pitch; // store current pitch value          if (!pEventPool->poolIsEmpty()) {
802          pEvents->move(pPitchbendEvent, pSynthesisEvents[Event::destination_vco]);  
803                RTList<uint>::Iterator  iuiOldestKey;
804                RTList<Voice>::Iterator itOldestVoice;
805    
806                // Select one voice for voice stealing
807                switch (VOICE_STEAL_ALGORITHM) {
808    
809                    // try to pick the oldest voice on the key where the new
810                    // voice should be spawned, if there is no voice on that
811                    // key, or no voice left to kill there, then procceed with
812                    // 'oldestkey' algorithm
813                    case voice_steal_algo_keymask: {
814                        midi_key_info_t* pOldestKey = &pMIDIKeyInfo[itNoteOnEvent->Param.Note.Key];
815                        if (itLastStolenVoice) {
816                            itOldestVoice = itLastStolenVoice;
817                            ++itOldestVoice;
818                        }
819                        else { // no voice stolen in this audio fragment cycle yet
820                            itOldestVoice = pOldestKey->pActiveVoices->first();
821                        }
822                        if (itOldestVoice) {
823                            iuiOldestKey = pOldestKey->itSelf;
824                            break; // selection succeeded
825                        }
826                    } // no break - intentional !
827    
828                    // try to pick the oldest voice on the oldest active key
829                    // (caution: must stay after 'keymask' algorithm !)
830                    case voice_steal_algo_oldestkey: {
831                        if (itLastStolenVoice) {
832                            midi_key_info_t* pOldestKey = &pMIDIKeyInfo[*iuiLastStolenKey];
833                            itOldestVoice = itLastStolenVoice;
834                            ++itOldestVoice;
835                            if (!itOldestVoice) {
836                                iuiOldestKey = iuiLastStolenKey;
837                                ++iuiOldestKey;
838                                if (iuiOldestKey) {
839                                    midi_key_info_t* pOldestKey = &pMIDIKeyInfo[*iuiOldestKey];
840                                    itOldestVoice = pOldestKey->pActiveVoices->first();
841                                }
842                                else {
843                                    dmsg(1,("gig::Engine: Warning, too less voices, even for voice stealing! - Better recompile with higher MAX_AUDIO_VOICES.\n"));
844                                    return;
845                                }
846                            }
847                            else iuiOldestKey = iuiLastStolenKey;
848                        }
849                        else { // no voice stolen in this audio fragment cycle yet
850                            iuiOldestKey = pActiveKeys->first();
851                            midi_key_info_t* pOldestKey = &pMIDIKeyInfo[*iuiOldestKey];
852                            itOldestVoice = pOldestKey->pActiveVoices->first();
853                        }
854                        break;
855                    }
856    
857                    // don't steal anything
858                    case voice_steal_algo_none:
859                    default: {
860                        dmsg(1,("No free voice (voice stealing disabled)!\n"));
861                        return;
862                    }
863                }
864    
865                //FIXME: can be removed, just a sanity check for debugging
866                if (!itOldestVoice->IsActive()) dmsg(1,("gig::Engine: ERROR, tried to steal a voice which was not active !!!\n"));
867    
868                // now kill the selected voice
869                itOldestVoice->Kill(itNoteOnEvent);
870                // remember which voice on which key we stole, so we can simply proceed for the next voice stealing
871                this->itLastStolenVoice = itOldestVoice;
872                this->iuiLastStolenKey = iuiOldestKey;
873            }
874            else dmsg(1,("Event pool emtpy!\n"));
875      }      }
876    
877      /**      /**
878       *  Immediately kills the voice given with pVoice (no matter if sustain is       *  Removes the given voice from the MIDI key's list of active voices.
879       *  pressed or not) and removes it from the MIDI key's list of active voice.       *  This method will be called when a voice went inactive, e.g. because
880       *  This method will e.g. be called if a voice went inactive by itself.       *  it finished to playback its sample, finished its release stage or
881         *  just was killed.
882       *       *
883       *  @param pVoice - points to the voice to be killed       *  @param itVoice - points to the voice to be freed
884       */       */
885      void Engine::KillVoice(Voice* pVoice) {      void Engine::FreeVoice(Pool<Voice>::Iterator& itVoice) {
886          if (pVoice) {          if (itVoice) {
887              if (pVoice->IsActive()) pVoice->Kill();              midi_key_info_t* pKey = &pMIDIKeyInfo[itVoice->MIDIKey];
888    
889              midi_key_info_t* pKey = &pMIDIKeyInfo[pVoice->MIDIKey];              uint keygroup = itVoice->KeyGroup;
890    
891              // free the voice object              // free the voice object
892              pVoicePool->free(pVoice);              pVoicePool->free(itVoice);
893    
894              // 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
895              if (pKey->pActiveVoices->is_empty()) {              if (pKey->pActiveVoices->isEmpty() && keygroup) {
896                  pKey->Active = false;                  uint** ppKeyGroup = &ActiveKeyGroups[keygroup];
897                  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"));  
898              }              }
899          }          }
900          else std::cerr << "Couldn't release voice! (pVoice == NULL)\n" << std::flush;          else std::cerr << "Couldn't release voice! (!itVoice)\n" << std::flush;
901        }
902    
903        /**
904         *  Called when there's no more voice left on a key, this call will
905         *  update the key info respectively.
906         *
907         *  @param pKey - key which is now inactive
908         */
909        void Engine::FreeKey(midi_key_info_t* pKey) {
910            if (pKey->pActiveVoices->isEmpty()) {
911                pKey->Active = false;
912                pActiveKeys->free(pKey->itSelf); // remove key from list of active keys
913                pKey->itSelf = RTList<uint>::Iterator();
914                pKey->ReleaseTrigger = false;
915                pKey->pEvents->clear();
916                dmsg(3,("Key has no more voices now\n"));
917            }
918            else dmsg(1,("gig::Engine: Oops, tried to free a key which contains voices.\n"));
919      }      }
920    
921      /**      /**
922       *  Reacts on supported control change commands (e.g. pitch bend wheel,       *  Reacts on supported control change commands (e.g. pitch bend wheel,
923       *  modulation wheel, aftertouch).       *  modulation wheel, aftertouch).
924       *       *
925       *  @param pControlChangeEvent - controller, value and time stamp of the event       *  @param itControlChangeEvent - controller, value and time stamp of the event
926       */       */
927      void Engine::ProcessControlChange(Event* pControlChangeEvent) {      void Engine::ProcessControlChange(Pool<Event>::Iterator& itControlChangeEvent) {
928          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));
929    
930          switch (pControlChangeEvent->Controller) {          switch (itControlChangeEvent->Param.CC.Controller) {
931              case 64: {              case 64: {
932                  if (pControlChangeEvent->Value >= 64 && !SustainPedal) {                  if (itControlChangeEvent->Param.CC.Value >= 64 && !SustainPedal) {
933                      dmsg(4,("PEDAL DOWN\n"));                      dmsg(4,("PEDAL DOWN\n"));
934                      SustainPedal = true;                      SustainPedal = true;
935    
936                      // cancel release process of voices if necessary                      // cancel release process of voices if necessary
937                      uint* piKey = pActiveKeys->first();                      RTList<uint>::Iterator iuiKey = pActiveKeys->first();
938                      if (piKey) {                      if (iuiKey) {
939                          pControlChangeEvent->Type = Event::type_cancel_release; // transform event type                          itControlChangeEvent->Type = Event::type_cancel_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                          }                          }
949                      }                      }
950                  }                  }
951                  if (pControlChangeEvent->Value < 64 && SustainPedal) {                  if (itControlChangeEvent->Param.CC.Value < 64 && SustainPedal) {
952                      dmsg(4,("PEDAL UP\n"));                      dmsg(4,("PEDAL UP\n"));
953                      SustainPedal = false;                      SustainPedal = false;
954    
955                      // release voices if their respective key is not pressed                      // release voices if their respective key is not pressed
956                      uint* piKey = pActiveKeys->first();                      RTList<uint>::Iterator iuiKey = pActiveKeys->first();
957                      if (piKey) {                      if (iuiKey) {
958                          pControlChangeEvent->Type = Event::type_release; // transform event type                          itControlChangeEvent->Type = Event::type_release; // transform event type
959                          while (piKey) {                          while (iuiKey) {
960                              midi_key_info_t* pKey = &pMIDIKeyInfo[*piKey];                              midi_key_info_t* pKey = &pMIDIKeyInfo[*iuiKey];
961                              pActiveKeys->set_current(piKey);                              ++iuiKey;
                             piKey = pActiveKeys->next();  
962                              if (!pKey->KeyPressed) {                              if (!pKey->KeyPressed) {
963                                  Event* pNewEvent = pKey->pEvents->alloc();                                  RTList<Event>::Iterator itNewEvent = pKey->pEvents->allocAppend();
964                                  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
965                                  else dmsg(1,("Event pool emtpy!\n"));                                  else dmsg(1,("Event pool emtpy!\n"));
966                              }                              }
967                          }                          }
# Line 633  namespace LinuxSampler { namespace gig { Line 972  namespace LinuxSampler { namespace gig {
972          }          }
973    
974          // update controller value in the engine's controller table          // update controller value in the engine's controller table
975          ControllerTable[pControlChangeEvent->Controller] = pControlChangeEvent->Value;          ControllerTable[itControlChangeEvent->Param.CC.Controller] = itControlChangeEvent->Param.CC.Value;
976    
977          // 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
978          pEvents->move(pControlChangeEvent, pCCEvents);          itControlChangeEvent.moveToEndOf(pCCEvents);
979        }
980    
981        /**
982         *  Reacts on MIDI system exclusive messages.
983         *
984         *  @param itSysexEvent - sysex data size and time stamp of the sysex event
985         */
986        void Engine::ProcessSysex(Pool<Event>::Iterator& itSysexEvent) {
987            RingBuffer<uint8_t>::NonVolatileReader reader = pSysexBuffer->get_non_volatile_reader();
988    
989            uint8_t exclusive_status, id;
990            if (!reader.pop(&exclusive_status)) goto free_sysex_data;
991            if (!reader.pop(&id))               goto free_sysex_data;
992            if (exclusive_status != 0xF0)       goto free_sysex_data;
993    
994            switch (id) {
995                case 0x41: { // Roland
996                    uint8_t device_id, model_id, cmd_id;
997                    if (!reader.pop(&device_id)) goto free_sysex_data;
998                    if (!reader.pop(&model_id))  goto free_sysex_data;
999                    if (!reader.pop(&cmd_id))    goto free_sysex_data;
1000                    if (model_id != 0x42 /*GS*/) goto free_sysex_data;
1001                    if (cmd_id != 0x12 /*DT1*/)  goto free_sysex_data;
1002    
1003                    // command address
1004                    uint8_t addr[3]; // 2 byte addr MSB, followed by 1 byte addr LSB)
1005                    const RingBuffer<uint8_t>::NonVolatileReader checksum_reader = reader; // so we can calculate the check sum later
1006                    if (reader.read(&addr[0], 3) != 3) goto free_sysex_data;
1007                    if (addr[0] == 0x40 && addr[1] == 0x00) { // System Parameters
1008                    }
1009                    else if (addr[0] == 0x40 && addr[1] == 0x01) { // Common Parameters
1010                    }
1011                    else if (addr[0] == 0x40 && (addr[1] & 0xf0) == 0x10) { // Part Parameters (1)
1012                        switch (addr[3]) {
1013                            case 0x40: { // scale tuning
1014                                uint8_t scale_tunes[12]; // detuning of all 12 semitones of an octave
1015                                if (reader.read(&scale_tunes[0], 12) != 12) goto free_sysex_data;
1016                                uint8_t checksum;
1017                                if (!reader.pop(&checksum))                      goto free_sysex_data;
1018                                if (GSCheckSum(checksum_reader, 12) != checksum) goto free_sysex_data;
1019                                for (int i = 0; i < 12; i++) scale_tunes[i] -= 64;
1020                                AdjustScale((int8_t*) scale_tunes);
1021                                break;
1022                            }
1023                        }
1024                    }
1025                    else if (addr[0] == 0x40 && (addr[1] & 0xf0) == 0x20) { // Part Parameters (2)
1026                    }
1027                    else if (addr[0] == 0x41) { // Drum Setup Parameters
1028                    }
1029                    break;
1030                }
1031            }
1032    
1033            free_sysex_data: // finally free sysex data
1034            pSysexBuffer->increment_read_ptr(itSysexEvent->Param.Sysex.Size);
1035        }
1036    
1037        /**
1038         * Calculates the Roland GS sysex check sum.
1039         *
1040         * @param AddrReader - reader which currently points to the first GS
1041         *                     command address byte of the GS sysex message in
1042         *                     question
1043         * @param DataSize   - size of the GS message data (in bytes)
1044         */
1045        uint8_t Engine::GSCheckSum(const RingBuffer<uint8_t>::NonVolatileReader AddrReader, uint DataSize) {
1046            RingBuffer<uint8_t>::NonVolatileReader reader = AddrReader;
1047            uint bytes = 3 /*addr*/ + DataSize;
1048            uint8_t addr_and_data[bytes];
1049            reader.read(&addr_and_data[0], bytes);
1050            uint8_t sum = 0;
1051            for (uint i = 0; i < bytes; i++) sum += addr_and_data[i];
1052            return 128 - sum % 128;
1053        }
1054    
1055        /**
1056         * Allows to tune each of the twelve semitones of an octave.
1057         *
1058         * @param ScaleTunes - detuning of all twelve semitones (in cents)
1059         */
1060        void Engine::AdjustScale(int8_t ScaleTunes[12]) {
1061            memcpy(&this->ScaleTuning[0], &ScaleTunes[0], 12); //TODO: currently not sample accurate
1062      }      }
1063    
1064      /**      /**
# Line 662  namespace LinuxSampler { namespace gig { Line 1084  namespace LinuxSampler { namespace gig {
1084          GlobalVolume = f;          GlobalVolume = f;
1085      }      }
1086    
1087        uint Engine::Channels() {
1088            return 2;
1089        }
1090    
1091        void Engine::SetOutputChannel(uint EngineAudioChannel, uint AudioDeviceChannel) {
1092            AudioChannel* pChannel = pAudioOutputDevice->Channel(AudioDeviceChannel);
1093            if (!pChannel) throw AudioOutputException("Invalid audio output device channel " + ToString(AudioDeviceChannel));
1094            switch (EngineAudioChannel) {
1095                case 0: // left output channel
1096                    pOutputLeft = pChannel->Buffer();
1097                    AudioDeviceChannelLeft = AudioDeviceChannel;
1098                    break;
1099                case 1: // right output channel
1100                    pOutputRight = pChannel->Buffer();
1101                    AudioDeviceChannelRight = AudioDeviceChannel;
1102                    break;
1103                default:
1104                    throw AudioOutputException("Invalid engine audio channel " + ToString(EngineAudioChannel));
1105            }
1106        }
1107    
1108        int Engine::OutputChannel(uint EngineAudioChannel) {
1109            switch (EngineAudioChannel) {
1110                case 0: // left channel
1111                    return AudioDeviceChannelLeft;
1112                case 1: // right channel
1113                    return AudioDeviceChannelRight;
1114                default:
1115                    throw AudioOutputException("Invalid engine audio channel " + ToString(EngineAudioChannel));
1116            }
1117        }
1118    
1119      uint Engine::VoiceCount() {      uint Engine::VoiceCount() {
1120          return ActiveVoiceCount;          return ActiveVoiceCount;
1121      }      }
# Line 690  namespace LinuxSampler { namespace gig { Line 1144  namespace LinuxSampler { namespace gig {
1144          return pDiskThread->GetBufferFillPercentage();          return pDiskThread->GetBufferFillPercentage();
1145      }      }
1146    
1147        String Engine::EngineName() {
1148            return "GigEngine";
1149        }
1150    
1151        String Engine::InstrumentFileName() {
1152            return InstrumentFile;
1153        }
1154    
1155        int Engine::InstrumentIndex() {
1156            return InstrumentIdx;
1157        }
1158    
1159        int Engine::InstrumentStatus() {
1160            return InstrumentStat;
1161        }
1162    
1163      String Engine::Description() {      String Engine::Description() {
1164          return "Gigasampler Engine";          return "Gigasampler Engine";
1165      }      }
1166    
1167      String Engine::Version() {      String Engine::Version() {
1168          return "0.0.1-0cvs20040423";          String s = "$Revision: 1.19 $";
1169            return s.substr(11, s.size() - 13); // cut dollar signs, spaces and CVS macro keyword
1170      }      }
1171    
1172  }} // namespace LinuxSampler::gig  }} // namespace LinuxSampler::gig
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