/[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 411 by schoenebeck, Sat Feb 26 02:01:14 2005 UTC revision 659 by schoenebeck, Thu Jun 16 21:35:30 2005 UTC
# Line 25  Line 25 
25  #include "DiskThread.h"  #include "DiskThread.h"
26  #include "Voice.h"  #include "Voice.h"
27  #include "EGADSR.h"  #include "EGADSR.h"
28    #include "../EngineFactory.h"
29    
30  #include "Engine.h"  #include "Engine.h"
31    
# Line 40  namespace LinuxSampler { namespace gig { Line 41  namespace LinuxSampler { namespace gig {
41    
42      std::map<AudioOutputDevice*,Engine*> Engine::engines;      std::map<AudioOutputDevice*,Engine*> Engine::engines;
43    
44        /**
45         * Get a gig::Engine object for the given gig::EngineChannel and the
46         * given AudioOutputDevice. All engine channels which are connected to
47         * the same audio output device will use the same engine instance. This
48         * method will be called by a gig::EngineChannel whenever it's
49         * connecting to a audio output device.
50         *
51         * @param pChannel - engine channel which acquires an engine object
52         * @param pDevice  - the audio output device \a pChannel is connected to
53         */
54      Engine* Engine::AcquireEngine(LinuxSampler::gig::EngineChannel* pChannel, AudioOutputDevice* pDevice) {      Engine* Engine::AcquireEngine(LinuxSampler::gig::EngineChannel* pChannel, AudioOutputDevice* pDevice) {
55          Engine* pEngine;          Engine* pEngine = NULL;
56            // check if there's already an engine for the given audio output device
57          if (engines.count(pDevice)) {          if (engines.count(pDevice)) {
58                dmsg(4,("Using existing gig::Engine.\n"));
59              pEngine = engines[pDevice];              pEngine = engines[pDevice];
60          } else {          } else { // create a new engine (and disk thread) instance for the given audio output device
61              pEngine = new Engine;              dmsg(4,("Creating new gig::Engine.\n"));
62                pEngine = (Engine*) EngineFactory::Create("gig");
63              pEngine->Connect(pDevice);              pEngine->Connect(pDevice);
64                engines[pDevice] = pEngine;
65          }          }
66          pEngine->samplerChannels.push_back(pChannel);          // register engine channel to the engine instance
67            pEngine->engineChannels.add(pChannel);
68            // remember index in the ArrayList
69            pChannel->iEngineIndexSelf = pEngine->engineChannels.size() - 1;
70            dmsg(4,("This gig::Engine has now %d EngineChannels.\n",pEngine->engineChannels.size()));
71          return pEngine;          return pEngine;
72      }      }
73    
74        /**
75         * Once an engine channel is disconnected from an audio output device,
76         * it wil immediately call this method to unregister itself from the
77         * engine instance and if that engine instance is not used by any other
78         * engine channel anymore, then that engine instance will be destroyed.
79         *
80         * @param pChannel - engine channel which wants to disconnect from it's
81         *                   engine instance
82         * @param pDevice  - audio output device \a pChannel was connected to
83         */
84      void Engine::FreeEngine(LinuxSampler::gig::EngineChannel* pChannel, AudioOutputDevice* pDevice) {      void Engine::FreeEngine(LinuxSampler::gig::EngineChannel* pChannel, AudioOutputDevice* pDevice) {
85            dmsg(4,("Disconnecting EngineChannel from gig::Engine.\n"));
86          Engine* pEngine = engines[pDevice];          Engine* pEngine = engines[pDevice];
87          pEngine->samplerChannels.remove(pChannel);          // unregister EngineChannel from the Engine instance
88          if (pEngine->samplerChannels.empty()) delete pEngine;          pEngine->engineChannels.remove(pChannel);
89            // if the used Engine instance is not used anymore, then destroy it
90            if (pEngine->engineChannels.empty()) {
91                pDevice->Disconnect(pEngine);
92                engines.erase(pDevice);
93                delete pEngine;
94                dmsg(4,("Destroying gig::Engine.\n"));
95            }
96            else dmsg(4,("This gig::Engine has now %d EngineChannels.\n",pEngine->engineChannels.size()));
97      }      }
98    
99        /**
100         * Constructor
101         */
102      Engine::Engine() {      Engine::Engine() {
103          pAudioOutputDevice = NULL;          pAudioOutputDevice = NULL;
104          pDiskThread        = NULL;          pDiskThread        = NULL;
105          pEventGenerator    = NULL;          pEventGenerator    = NULL;
106          pSysexBuffer       = new RingBuffer<uint8_t>(SYSEX_BUFFER_SIZE, 0);          pSysexBuffer       = new RingBuffer<uint8_t>(CONFIG_SYSEX_BUFFER_SIZE, 0);
107          pEventQueue        = new RingBuffer<Event>(MAX_EVENTS_PER_FRAGMENT, 0);          pEventQueue        = new RingBuffer<Event>(CONFIG_MAX_EVENTS_PER_FRAGMENT, 0);
108          pEventPool         = new Pool<Event>(MAX_EVENTS_PER_FRAGMENT);          pEventPool         = new Pool<Event>(CONFIG_MAX_EVENTS_PER_FRAGMENT);
109          pVoicePool         = new Pool<Voice>(MAX_AUDIO_VOICES);                  pVoicePool         = new Pool<Voice>(CONFIG_MAX_VOICES);
110          pVoiceStealingQueue = new RTList<Event>(pEventPool);          pVoiceStealingQueue = new RTList<Event>(pEventPool);
111          pEvents            = new RTList<Event>(pEventPool);          pGlobalEvents      = new RTList<Event>(pEventPool);
         pCCEvents          = new RTList<Event>(pEventPool);  
           
         for (uint i = 0; i < Event::destination_count; i++) {  
             pSynthesisEvents[i] = new RTList<Event>(pEventPool);  
         }  
112          for (RTList<Voice>::Iterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {          for (RTList<Voice>::Iterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {
113              iterVoice->SetEngine(this);              iterVoice->SetEngine(this);
114          }          }
# Line 83  namespace LinuxSampler { namespace gig { Line 119  namespace LinuxSampler { namespace gig {
119          pMainFilterParameters   = NULL;          pMainFilterParameters   = NULL;
120    
121          ResetInternal();          ResetInternal();
122            ResetScaleTuning();
123      }      }
124    
125        /**
126         * Destructor
127         */
128      Engine::~Engine() {      Engine::~Engine() {
129          if (pDiskThread) {          if (pDiskThread) {
130              dmsg(1,("Stopping disk thread..."));              dmsg(1,("Stopping disk thread..."));
# Line 92  namespace LinuxSampler { namespace gig { Line 132  namespace LinuxSampler { namespace gig {
132              delete pDiskThread;              delete pDiskThread;
133              dmsg(1,("OK\n"));              dmsg(1,("OK\n"));
134          }          }
         for (uint i = 0; i < Event::destination_count; i++) {  
             if (pSynthesisEvents[i]) delete pSynthesisEvents[i];  
         }  
         if (pEvents)     delete pEvents;  
         if (pCCEvents)   delete pCCEvents;  
135          if (pEventQueue) delete pEventQueue;          if (pEventQueue) delete pEventQueue;
136          if (pEventPool)  delete pEventPool;          if (pEventPool)  delete pEventPool;
137          if (pVoicePool) {          if (pVoicePool) {
# Line 109  namespace LinuxSampler { namespace gig { Line 144  namespace LinuxSampler { namespace gig {
144          if (pSynthesisParameters[0]) free(pSynthesisParameters[0]);          if (pSynthesisParameters[0]) free(pSynthesisParameters[0]);
145          if (pVoiceStealingQueue) delete pVoiceStealingQueue;          if (pVoiceStealingQueue) delete pVoiceStealingQueue;
146          if (pSysexBuffer) delete pSysexBuffer;          if (pSysexBuffer) delete pSysexBuffer;
147            EngineFactory::Destroy(this);
148      }      }
149    
150      void Engine::Enable() {      void Engine::Enable() {
# Line 136  namespace LinuxSampler { namespace gig { Line 172  namespace LinuxSampler { namespace gig {
172      void Engine::Reset() {      void Engine::Reset() {
173          DisableAndLock();          DisableAndLock();
174          ResetInternal();          ResetInternal();
175            ResetScaleTuning();
176          Enable();          Enable();
177      }      }
178    
# Line 148  namespace LinuxSampler { namespace gig { Line 185  namespace LinuxSampler { namespace gig {
185          ActiveVoiceCountMax = 0;          ActiveVoiceCountMax = 0;
186    
187          // reset voice stealing parameters          // reset voice stealing parameters
         itLastStolenVoice = RTList<Voice>::Iterator();  
         iuiLastStolenKey  = RTList<uint>::Iterator();  
188          pVoiceStealingQueue->clear();          pVoiceStealingQueue->clear();
189            itLastStolenVoice          = RTList<Voice>::Iterator();
190          // reset to normal chromatic scale (means equal temper)          itLastStolenVoiceGlobally  = RTList<Voice>::Iterator();
191          memset(&ScaleTuning[0], 0x00, 12);          iuiLastStolenKey           = RTList<uint>::Iterator();
192            iuiLastStolenKeyGlobally   = RTList<uint>::Iterator();
193            pLastStolenChannel         = NULL;
194    
195          // reset all voices          // reset all voices
196          for (RTList<Voice>::Iterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {          for (RTList<Voice>::Iterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {
# Line 168  namespace LinuxSampler { namespace gig { Line 205  namespace LinuxSampler { namespace gig {
205          pEventQueue->init();          pEventQueue->init();
206      }      }
207    
208        /**
209         * Reset to normal, chromatic scale (means equal tempered).
210         */
211        void Engine::ResetScaleTuning() {
212            memset(&ScaleTuning[0], 0x00, 12);
213        }
214    
215        /**
216         * Connect this engine instance with the given audio output device.
217         * This method will be called when an Engine instance is created.
218         * All of the engine's data structures which are dependant to the used
219         * audio output device / driver will be (re)allocated and / or
220         * adjusted appropriately.
221         *
222         * @param pAudioOut - audio output device to connect to
223         */
224      void Engine::Connect(AudioOutputDevice* pAudioOut) {      void Engine::Connect(AudioOutputDevice* pAudioOut) {
225          pAudioOutputDevice = pAudioOut;          pAudioOutputDevice = pAudioOut;
226    
# Line 181  namespace LinuxSampler { namespace gig { Line 234  namespace LinuxSampler { namespace gig {
234              String msg = "Audio output device unable to provide 2 audio channels, cause: " + e.Message();              String msg = "Audio output device unable to provide 2 audio channels, cause: " + e.Message();
235              throw LinuxSamplerException(msg);              throw LinuxSamplerException(msg);
236          }          }
237            
238          this->MaxSamplesPerCycle      = pAudioOutputDevice->MaxSamplesPerCycle();          this->MaxSamplesPerCycle = pAudioOutputDevice->MaxSamplesPerCycle();
239          this->SampleRate              = pAudioOutputDevice->SampleRate();          this->SampleRate         = pAudioOutputDevice->SampleRate();
240    
241          // FIXME: audio drivers with varying fragment sizes might be a problem here          // FIXME: audio drivers with varying fragment sizes might be a problem here
242          MaxFadeOutPos = MaxSamplesPerCycle - int(double(SampleRate) * EG_MIN_RELEASE_TIME) - 1;          MaxFadeOutPos = MaxSamplesPerCycle - int(double(SampleRate) * CONFIG_EG_MIN_RELEASE_TIME) - 1;
243          if (MaxFadeOutPos < 0)          if (MaxFadeOutPos < 0)
244              throw LinuxSamplerException("EG_MIN_RELEASE_TIME in EGADSR.h too big for current audio fragment size / sampling rate!");              throw LinuxSamplerException("CONFIG_EG_MIN_RELEASE_TIME too big for current audio fragment size / sampling rate!");
245    
246          // (re)create disk thread          // (re)create disk thread
247          if (this->pDiskThread) {          if (this->pDiskThread) {
# Line 197  namespace LinuxSampler { namespace gig { Line 250  namespace LinuxSampler { namespace gig {
250              delete this->pDiskThread;              delete this->pDiskThread;
251              dmsg(1,("OK\n"));              dmsg(1,("OK\n"));
252          }          }
253          this->pDiskThread = new DiskThread(((pAudioOut->MaxSamplesPerCycle() << MAX_PITCH) << 1) + 6); //FIXME: assuming stereo          this->pDiskThread = new DiskThread(((pAudioOut->MaxSamplesPerCycle() << CONFIG_MAX_PITCH) << 1) + 6); //FIXME: assuming stereo
254          if (!pDiskThread) {          if (!pDiskThread) {
255              dmsg(0,("gig::Engine  new diskthread = NULL\n"));              dmsg(0,("gig::Engine  new diskthread = NULL\n"));
256              exit(EXIT_FAILURE);              exit(EXIT_FAILURE);
# Line 243  namespace LinuxSampler { namespace gig { Line 296  namespace LinuxSampler { namespace gig {
296      }      }
297    
298      /**      /**
299         * Clear all engine global event lists.
300         */
301        void Engine::ClearEventLists() {
302            pGlobalEvents->clear();
303        }
304    
305        /**
306         * Copy all events from the engine's global input queue buffer to the
307         * engine's internal event list. This will be done at the beginning of
308         * each audio cycle (that is each RenderAudio() call) to distinguish
309         * all global events which have to be processed in the current audio
310         * cycle. These events are usually just SysEx messages. Every
311         * EngineChannel has it's own input event queue buffer and event list
312         * to handle common events like NoteOn, NoteOff and ControlChange
313         * events.
314         *
315         * @param Samples - number of sample points to be processed in the
316         *                  current audio cycle
317         */
318        void Engine::ImportEvents(uint Samples) {
319            RingBuffer<Event>::NonVolatileReader eventQueueReader = pEventQueue->get_non_volatile_reader();
320            Event* pEvent;
321            while (true) {
322                // get next event from input event queue
323                if (!(pEvent = eventQueueReader.pop())) break;
324                // if younger event reached, ignore that and all subsequent ones for now
325                if (pEvent->FragmentPos() >= Samples) {
326                    eventQueueReader--;
327                    dmsg(2,("Younger Event, pos=%d ,Samples=%d!\n",pEvent->FragmentPos(),Samples));
328                    pEvent->ResetFragmentPos();
329                    break;
330                }
331                // copy event to internal event list
332                if (pGlobalEvents->poolIsEmpty()) {
333                    dmsg(1,("Event pool emtpy!\n"));
334                    break;
335                }
336                *pGlobalEvents->allocAppend() = *pEvent;
337            }
338            eventQueueReader.free(); // free all copied events from input queue
339        }
340    
341        /**
342       *  Let this engine proceed to render the given amount of sample points. The       *  Let this engine proceed to render the given amount of sample points. The
343       *  calculated audio data of all voices of this engine will be placed into       *  calculated audio data of all voices of this engine will be placed into
344       *  the engine's audio sum buffer which has to be copied and eventually be       *  the engine's audio sum buffer which has to be copied and eventually be
345       *  converted to the appropriate value range by the audio output class (e.g.       *  converted to the appropriate value range by the audio output class (e.g.
346       *  AlsaIO or JackIO) right after.       *  AlsaIO or JackIO) right after.
347       *       *
      *  @param pEngineChannel - the engine's channel to be rendered  
348       *  @param Samples - number of sample points to be rendered       *  @param Samples - number of sample points to be rendered
349       *  @returns       0 on success       *  @returns       0 on success
350       */       */
351      int Engine::RenderAudio(LinuxSampler::gig::EngineChannel* pEngineChannel, uint Samples) {      int Engine::RenderAudio(uint Samples) {
352          dmsg(5,("RenderAudio(Samples=%d)\n", Samples));          dmsg(5,("RenderAudio(Samples=%d)\n", Samples));
353    
354          // return if no instrument loaded or engine disabled          // return if engine disabled
355          if (EngineDisabled.Pop()) {          if (EngineDisabled.Pop()) {
356              dmsg(5,("gig::Engine: engine disabled (val=%d)\n",EngineDisabled.GetUnsafe()));              dmsg(5,("gig::Engine: engine disabled (val=%d)\n",EngineDisabled.GetUnsafe()));
357              return 0;              return 0;
358          }          }
         if (!pEngineChannel->pInstrument) {  
             dmsg(5,("gig::Engine: no instrument loaded\n"));  
             return 0;  
         }  
   
359    
360          // update time of start and end of this audio fragment (as events' time stamps relate to this)          // update time of start and end of this audio fragment (as events' time stamps relate to this)
361          pEventGenerator->UpdateFragmentTime(Samples);          pEventGenerator->UpdateFragmentTime(Samples);
362    
363            // get all events from the engine's global input event queue which belong to the current fragment
364            // (these are usually just SysEx messages)
365            ImportEvents(Samples);
366    
367          // empty the event lists for the new fragment          // process engine global events (these are currently only MIDI System Exclusive messages)
         pEvents->clear();  
         pCCEvents->clear();  
         for (uint i = 0; i < Event::destination_count; i++) {  
             pSynthesisEvents[i]->clear();  
         }  
368          {          {
369              RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first();              RTList<Event>::Iterator itEvent = pGlobalEvents->first();
370              RTList<uint>::Iterator end    = pEngineChannel->pActiveKeys->end();              RTList<Event>::Iterator end     = pGlobalEvents->end();
371              for(; iuiKey != end; ++iuiKey) {              for (; itEvent != end; ++itEvent) {
372                  pEngineChannel->pMIDIKeyInfo[*iuiKey].pEvents->clear(); // free all events on the key                  switch (itEvent->Type) {
373                        case Event::type_sysex:
374                            dmsg(5,("Engine: Sysex received\n"));
375                            ProcessSysex(itEvent);
376                            break;
377                    }
378              }              }
379          }          }
380    
381            // We only allow a maximum of CONFIG_MAX_VOICES voices to be stolen
382            // in each audio fragment. All subsequent request for spawning new
383            // voices in the same audio fragment will be ignored.
384            VoiceTheftsLeft = CONFIG_MAX_VOICES;
385    
386          // get all events from the input event queue which belong to the current fragment          // reset internal voice counter (just for statistic of active voices)
387          {          ActiveVoiceCountTemp = 0;
388              RingBuffer<Event>::NonVolatileReader eventQueueReader = pEventQueue->get_non_volatile_reader();  
389              Event* pEvent;  
390              while (true) {          // handle events on all engine channels
391                  // get next event from input event queue          for (int i = 0; i < engineChannels.size(); i++) {
392                  if (!(pEvent = eventQueueReader.pop())) break;              if (!engineChannels[i]->pInstrument) continue; // ignore if no instrument loaded
393                  // if younger event reached, ignore that and all subsequent ones for now              ProcessEvents(engineChannels[i], Samples);
394                  if (pEvent->FragmentPos() >= Samples) {          }
395                      eventQueueReader--;  
396                      dmsg(2,("Younger Event, pos=%d ,Samples=%d!\n",pEvent->FragmentPos(),Samples));          // render all 'normal', active voices on all engine channels
397                      pEvent->ResetFragmentPos();          for (int i = 0; i < engineChannels.size(); i++) {
398                      break;              if (!engineChannels[i]->pInstrument) continue; // ignore if no instrument loaded
399                  }              RenderActiveVoices(engineChannels[i], Samples);
400                  // copy event to internal event list          }
401                  if (pEvents->poolIsEmpty()) {  
402                      dmsg(1,("Event pool emtpy!\n"));          // now that all ordinary voices on ALL engine channels are rendered, render new stolen voices
403                      break;          RenderStolenVoices(Samples);
404                  }  
405                  *pEvents->allocAppend() = *pEvent;          // handle cleanup on all engine channels for the next audio fragment
406              }          for (int i = 0; i < engineChannels.size(); i++) {
407              eventQueueReader.free(); // free all copied events from input queue              if (!engineChannels[i]->pInstrument) continue; // ignore if no instrument loaded
408                PostProcess(engineChannels[i]);
409          }          }
410    
411    
412            // empty the engine's event list for the next audio fragment
413            ClearEventLists();
414    
415            // reset voice stealing for the next audio fragment
416            pVoiceStealingQueue->clear();
417    
418            // just some statistics about this engine instance
419            ActiveVoiceCount = ActiveVoiceCountTemp;
420            if (ActiveVoiceCount > ActiveVoiceCountMax) ActiveVoiceCountMax = ActiveVoiceCount;
421    
422            FrameTime += Samples;
423    
424            return 0;
425        }
426    
427        /**
428         * Dispatch and handle all events in this audio fragment for the given
429         * engine channel.
430         *
431         * @param pEngineChannel - engine channel on which events should be
432         *                         processed
433         * @param Samples        - amount of sample points to be processed in
434         *                         this audio fragment cycle
435         */
436        void Engine::ProcessEvents(EngineChannel* pEngineChannel, uint Samples) {
437            // get all events from the engine channels's input event queue which belong to the current fragment
438            // (these are the common events like NoteOn, NoteOff, ControlChange, etc.)
439            pEngineChannel->ImportEvents(Samples);
440    
441          // process events          // process events
442          {          {
443              RTList<Event>::Iterator itEvent = pEvents->first();              RTList<Event>::Iterator itEvent = pEngineChannel->pEvents->first();
444              RTList<Event>::Iterator end     = pEvents->end();              RTList<Event>::Iterator end     = pEngineChannel->pEvents->end();
445              for (; itEvent != end; ++itEvent) {              for (; itEvent != end; ++itEvent) {
446                  switch (itEvent->Type) {                  switch (itEvent->Type) {
447                      case Event::type_note_on:                      case Event::type_note_on:
448                          dmsg(5,("Engine: Note on received\n"));                          dmsg(5,("Engine: Note on received\n"));
449                          ProcessNoteOn(pEngineChannel, itEvent);                          ProcessNoteOn((EngineChannel*)itEvent->pEngineChannel, itEvent);
450                          break;                          break;
451                      case Event::type_note_off:                      case Event::type_note_off:
452                          dmsg(5,("Engine: Note off received\n"));                          dmsg(5,("Engine: Note off received\n"));
453                          ProcessNoteOff(pEngineChannel, itEvent);                          ProcessNoteOff((EngineChannel*)itEvent->pEngineChannel, itEvent);
454                          break;                          break;
455                      case Event::type_control_change:                      case Event::type_control_change:
456                          dmsg(5,("Engine: MIDI CC received\n"));                          dmsg(5,("Engine: MIDI CC received\n"));
457                          ProcessControlChange(pEngineChannel, itEvent);                          ProcessControlChange((EngineChannel*)itEvent->pEngineChannel, itEvent);
458                          break;                          break;
459                      case Event::type_pitchbend:                      case Event::type_pitchbend:
460                          dmsg(5,("Engine: Pitchbend received\n"));                          dmsg(5,("Engine: Pitchbend received\n"));
461                          ProcessPitchbend(pEngineChannel, itEvent);                          ProcessPitchbend((EngineChannel*)itEvent->pEngineChannel, itEvent);
                         break;  
                     case Event::type_sysex:  
                         dmsg(5,("Engine: Sysex received\n"));  
                         ProcessSysex(itEvent);  
462                          break;                          break;
463                  }                  }
464              }              }
465          }          }
466    
467            // reset voice stealing for the next engine channel (or next audio fragment)
468            itLastStolenVoice         = RTList<Voice>::Iterator();
469            itLastStolenVoiceGlobally = RTList<Voice>::Iterator();
470            iuiLastStolenKey          = RTList<uint>::Iterator();
471            iuiLastStolenKeyGlobally  = RTList<uint>::Iterator();
472            pLastStolenChannel        = NULL;
473        }
474    
475          int active_voices = 0;      /**
476         * Render all 'normal' voices (that is voices which were not stolen in
477          // render audio from all active voices       * this fragment) on the given engine channel.
478          {       *
479              RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first();       * @param pEngineChannel - engine channel on which audio should be
480              RTList<uint>::Iterator end    = pEngineChannel->pActiveKeys->end();       *                         rendered
481              while (iuiKey != end) { // iterate through all active keys       * @param Samples        - amount of sample points to be rendered in
482                  midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey];       *                         this audio fragment cycle
483                  ++iuiKey;       */
484        void Engine::RenderActiveVoices(EngineChannel* pEngineChannel, uint Samples) {
485                  RTList<Voice>::Iterator itVoice     = pKey->pActiveVoices->first();          RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first();
486                  RTList<Voice>::Iterator itVoicesEnd = pKey->pActiveVoices->end();          RTList<uint>::Iterator end    = pEngineChannel->pActiveKeys->end();
487                  for (; itVoice != itVoicesEnd; ++itVoice) { // iterate through all voices on this key          while (iuiKey != end) { // iterate through all active keys
488                      // now render current voice              midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey];
489                      itVoice->Render(Samples);              ++iuiKey;
490                      if (itVoice->IsActive()) active_voices++; // still active  
491                      else { // voice reached end, is now inactive              RTList<Voice>::Iterator itVoice     = pKey->pActiveVoices->first();
492                          FreeVoice(pEngineChannel, itVoice); // remove voice from the list of active voices              RTList<Voice>::Iterator itVoicesEnd = pKey->pActiveVoices->end();
493                      }              for (; itVoice != itVoicesEnd; ++itVoice) { // iterate through all voices on this key
494                    // now render current voice
495                    itVoice->Render(Samples);
496                    if (itVoice->IsActive()) ActiveVoiceCountTemp++; // still active
497                    else { // voice reached end, is now inactive
498                        FreeVoice(pEngineChannel, itVoice); // remove voice from the list of active voices
499                  }                  }
500              }              }
501          }          }
502        }
503    
504        /**
505          // now render all postponed voices from voice stealing       * Render all stolen voices (only voices which were stolen in this
506          {       * fragment) on the given engine channel. Stolen voices are rendered
507              RTList<Event>::Iterator itVoiceStealEvent = pVoiceStealingQueue->first();       * after all normal voices have been rendered; this is needed to render
508              RTList<Event>::Iterator end               = pVoiceStealingQueue->end();       * audio of those voices which were selected for voice stealing until
509              for (; itVoiceStealEvent != end; ++itVoiceStealEvent) {       * the point were the stealing (that is the take over of the voice)
510                  Pool<Voice>::Iterator itNewVoice =       * actually happened.
511                      LaunchVoice(pEngineChannel, itVoiceStealEvent, itVoiceStealEvent->Param.Note.Layer, itVoiceStealEvent->Param.Note.ReleaseTrigger, false);       *
512                  if (itNewVoice) {       * @param pEngineChannel - engine channel on which audio should be
513                      for (; itNewVoice; itNewVoice = itNewVoice->itChildVoice) {       *                         rendered
514                          itNewVoice->Render(Samples);       * @param Samples        - amount of sample points to be rendered in
515                          if (itNewVoice->IsActive()) active_voices++; // still active       *                         this audio fragment cycle
516                          else { // voice reached end, is now inactive       */
517                              FreeVoice(pEngineChannel, itNewVoice); // remove voice from the list of active voices      void Engine::RenderStolenVoices(uint Samples) {
518                          }          RTList<Event>::Iterator itVoiceStealEvent = pVoiceStealingQueue->first();
519                      }          RTList<Event>::Iterator end               = pVoiceStealingQueue->end();
520            for (; itVoiceStealEvent != end; ++itVoiceStealEvent) {
521                EngineChannel* pEngineChannel = (EngineChannel*) itVoiceStealEvent->pEngineChannel;
522                Pool<Voice>::Iterator itNewVoice =
523                    LaunchVoice(pEngineChannel, itVoiceStealEvent, itVoiceStealEvent->Param.Note.Layer, itVoiceStealEvent->Param.Note.ReleaseTrigger, false);
524                if (itNewVoice) {
525                    itNewVoice->Render(Samples);
526                    if (itNewVoice->IsActive()) ActiveVoiceCountTemp++; // still active
527                    else { // voice reached end, is now inactive
528                        FreeVoice(pEngineChannel, itNewVoice); // remove voice from the list of active voices
529                  }                  }
                 else dmsg(1,("gig::Engine: ERROR, voice stealing didn't work out!\n"));  
530              }              }
531          }              else dmsg(1,("gig::Engine: ERROR, voice stealing didn't work out!\n"));
         // reset voice stealing for the new fragment  
         pVoiceStealingQueue->clear();  
         itLastStolenVoice = RTList<Voice>::Iterator();  
         iuiLastStolenKey  = RTList<uint>::Iterator();  
532    
533                // we need to clear the key's event list explicitly here in case key was never active
534                midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[itVoiceStealEvent->Param.Note.Key];
535                pKey->VoiceTheftsQueued--;
536                if (!pKey->Active && !pKey->VoiceTheftsQueued) pKey->pEvents->clear();
537            }
538        }
539    
540        /**
541         * Free all keys which have turned inactive in this audio fragment, from
542         * the list of active keys and clear all event lists on that engine
543         * channel.
544         *
545         * @param pEngineChannel - engine channel to cleanup
546         */
547        void Engine::PostProcess(EngineChannel* pEngineChannel) {
548          // free all keys which have no active voices left          // free all keys which have no active voices left
549          {          {
550              RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first();              RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first();
# Line 399  namespace LinuxSampler { namespace gig { Line 553  namespace LinuxSampler { namespace gig {
553                  midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey];                  midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey];
554                  ++iuiKey;                  ++iuiKey;
555                  if (pKey->pActiveVoices->isEmpty()) FreeKey(pEngineChannel, pKey);                  if (pKey->pActiveVoices->isEmpty()) FreeKey(pEngineChannel, pKey);
556                  #if DEVMODE                  #if CONFIG_DEVMODE
557                  else { // FIXME: should be removed before the final release (purpose: just a sanity check for debugging)                  else { // just a sanity check for debugging
558                      RTList<Voice>::Iterator itVoice     = pKey->pActiveVoices->first();                      RTList<Voice>::Iterator itVoice     = pKey->pActiveVoices->first();
559                      RTList<Voice>::Iterator itVoicesEnd = pKey->pActiveVoices->end();                      RTList<Voice>::Iterator itVoicesEnd = pKey->pActiveVoices->end();
560                      for (; itVoice != itVoicesEnd; ++itVoice) { // iterate through all voices on this key                      for (; itVoice != itVoicesEnd; ++itVoice) { // iterate through all voices on this key
# Line 409  namespace LinuxSampler { namespace gig { Line 563  namespace LinuxSampler { namespace gig {
563                          }                          }
564                      }                      }
565                  }                  }
566                  #endif // DEVMODE                  #endif // CONFIG_DEVMODE
567              }              }
568          }          }
569    
570            // empty the engine channel's own event lists
571          // write that to the disk thread class so that it can print it          pEngineChannel->ClearEventLists();
572          // on the console for debugging purposes      }
         ActiveVoiceCount = active_voices;  
         if (ActiveVoiceCount > ActiveVoiceCountMax) ActiveVoiceCountMax = ActiveVoiceCount;  
   
   
         return 0;  
     }      
573    
574      /**      /**
575       *  Will be called by the MIDI input device whenever a MIDI system       *  Will be called by the MIDI input device whenever a MIDI system
# Line 434  namespace LinuxSampler { namespace gig { Line 582  namespace LinuxSampler { namespace gig {
582          Event event             = pEventGenerator->CreateEvent();          Event event             = pEventGenerator->CreateEvent();
583          event.Type              = Event::type_sysex;          event.Type              = Event::type_sysex;
584          event.Param.Sysex.Size  = Size;          event.Param.Sysex.Size  = Size;
585            event.pEngineChannel    = NULL; // as Engine global event
586          if (pEventQueue->write_space() > 0) {          if (pEventQueue->write_space() > 0) {
587              if (pSysexBuffer->write_space() >= Size) {              if (pSysexBuffer->write_space() >= Size) {
588                  // copy sysex data to input buffer                  // copy sysex data to input buffer
# Line 449  namespace LinuxSampler { namespace gig { Line 598  namespace LinuxSampler { namespace gig {
598                  // finally place sysex event into input event queue                  // finally place sysex event into input event queue
599                  pEventQueue->push(&event);                  pEventQueue->push(&event);
600              }              }
601              else dmsg(1,("Engine: Sysex message too large (%d byte) for input buffer (%d byte)!",Size,SYSEX_BUFFER_SIZE));              else dmsg(1,("Engine: Sysex message too large (%d byte) for input buffer (%d byte)!",Size,CONFIG_SYSEX_BUFFER_SIZE));
602          }          }
603          else dmsg(1,("Engine: Input event queue full!"));          else dmsg(1,("Engine: Input event queue full!"));
604      }      }
# Line 461  namespace LinuxSampler { namespace gig { Line 610  namespace LinuxSampler { namespace gig {
610       *  @param itNoteOnEvent - key, velocity and time stamp of the event       *  @param itNoteOnEvent - key, velocity and time stamp of the event
611       */       */
612      void Engine::ProcessNoteOn(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent) {      void Engine::ProcessNoteOn(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent) {
613            
614          const int key = itNoteOnEvent->Param.Note.Key;          const int key = itNoteOnEvent->Param.Note.Key;
615    
616          // Change key dimension value if key is in keyswitching area          // Change key dimension value if key is in keyswitching area
# Line 475  namespace LinuxSampler { namespace gig { Line 624  namespace LinuxSampler { namespace gig {
624          midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[key];          midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[key];
625    
626          pKey->KeyPressed = true; // the MIDI key was now pressed down          pKey->KeyPressed = true; // the MIDI key was now pressed down
627            pKey->Velocity   = itNoteOnEvent->Param.Note.Velocity;
628            pKey->NoteOnTime = FrameTime + itNoteOnEvent->FragmentPos(); // will be used to calculate note length
629    
630          // cancel release process of voices on this key if needed          // cancel release process of voices on this key if needed
631          if (pKey->Active && !pEngineChannel->SustainPedal) {          if (pKey->Active && !pEngineChannel->SustainPedal) {
# Line 489  namespace LinuxSampler { namespace gig { Line 640  namespace LinuxSampler { namespace gig {
640          // move note on event to the key's own event list          // move note on event to the key's own event list
641          RTList<Event>::Iterator itNoteOnEventOnKeyList = itNoteOnEvent.moveToEndOf(pKey->pEvents);          RTList<Event>::Iterator itNoteOnEventOnKeyList = itNoteOnEvent.moveToEndOf(pKey->pEvents);
642    
643          // allocate and trigger a new voice for the key          // allocate and trigger new voice(s) for the key
644          LaunchVoice(pEngineChannel, itNoteOnEventOnKeyList, 0, false, true);          {
645                // first, get total amount of required voices (dependant on amount of layers)
646                ::gig::Region* pRegion = pEngineChannel->pInstrument->GetRegion(itNoteOnEventOnKeyList->Param.Note.Key);
647                if (pRegion) {
648                    int voicesRequired = pRegion->Layers;
649                    // now launch the required amount of voices
650                    for (int i = 0; i < voicesRequired; i++)
651                        LaunchVoice(pEngineChannel, itNoteOnEventOnKeyList, i, false, true);
652                }
653            }
654    
655            // if neither a voice was spawned or postponed then remove note on event from key again
656            if (!pKey->Active && !pKey->VoiceTheftsQueued)
657                pKey->pEvents->free(itNoteOnEventOnKeyList);
658    
659            pKey->RoundRobinIndex++;
660      }      }
661    
662      /**      /**
# Line 510  namespace LinuxSampler { namespace gig { Line 676  namespace LinuxSampler { namespace gig {
676          // release voices on this key if needed          // release voices on this key if needed
677          if (pKey->Active && !pEngineChannel->SustainPedal) {          if (pKey->Active && !pEngineChannel->SustainPedal) {
678              itNoteOffEvent->Type = Event::type_release; // transform event type              itNoteOffEvent->Type = Event::type_release; // transform event type
         }  
679    
680          // move event to the key's own event list              // move event to the key's own event list
681          RTList<Event>::Iterator itNoteOffEventOnKeyList = itNoteOffEvent.moveToEndOf(pKey->pEvents);              RTList<Event>::Iterator itNoteOffEventOnKeyList = itNoteOffEvent.moveToEndOf(pKey->pEvents);
682    
683          // spawn release triggered voice(s) if needed              // spawn release triggered voice(s) if needed
684          if (pKey->ReleaseTrigger) {              if (pKey->ReleaseTrigger) {
685              LaunchVoice(pEngineChannel, itNoteOffEventOnKeyList, 0, true, false); //FIXME: for the moment we don't perform voice stealing for release triggered samples                  // first, get total amount of required voices (dependant on amount of layers)
686              pKey->ReleaseTrigger = false;                  ::gig::Region* pRegion = pEngineChannel->pInstrument->GetRegion(itNoteOffEventOnKeyList->Param.Note.Key);
687                    if (pRegion) {
688                        int voicesRequired = pRegion->Layers;
689    
690                        // MIDI note-on velocity is used instead of note-off velocity
691                        itNoteOffEventOnKeyList->Param.Note.Velocity = pKey->Velocity;
692    
693                        // now launch the required amount of voices
694                        for (int i = 0; i < voicesRequired; i++)
695                            LaunchVoice(pEngineChannel, itNoteOffEventOnKeyList, i, true, false); //FIXME: for the moment we don't perform voice stealing for release triggered samples
696                    }
697                    pKey->ReleaseTrigger = false;
698                }
699    
700                // if neither a voice was spawned or postponed then remove note off event from key again
701                if (!pKey->Active && !pKey->VoiceTheftsQueued)
702                    pKey->pEvents->free(itNoteOffEventOnKeyList);
703          }          }
704      }      }
705    
# Line 531  namespace LinuxSampler { namespace gig { Line 712  namespace LinuxSampler { namespace gig {
712       */       */
713      void Engine::ProcessPitchbend(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itPitchbendEvent) {      void Engine::ProcessPitchbend(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itPitchbendEvent) {
714          pEngineChannel->Pitch = itPitchbendEvent->Param.Pitch.Pitch; // store current pitch value          pEngineChannel->Pitch = itPitchbendEvent->Param.Pitch.Pitch; // store current pitch value
715          itPitchbendEvent.moveToEndOf(pSynthesisEvents[Event::destination_vco]);          itPitchbendEvent.moveToEndOf(pEngineChannel->pSynthesisEvents[Event::destination_vco]);
716      }      }
717    
718      /**      /**
# Line 590  namespace LinuxSampler { namespace gig { Line 771  namespace LinuxSampler { namespace gig {
771              }              }
772          }          }
773          else if (VoiceStealing) {          else if (VoiceStealing) {
774              // first, get total amount of required voices (dependant on amount of layers)              // try to steal one voice
775              ::gig::Region* pRegion = pEngineChannel->pInstrument->GetRegion(itNoteOnEvent->Param.Note.Key);              int result = StealVoice(pEngineChannel, itNoteOnEvent);
776              if (!pRegion) return Pool<Voice>::Iterator(); // nothing defined for this MIDI key, so no voice needed              if (!result) { // voice stolen successfully
777              int voicesRequired = pRegion->Layers;                  // put note-on event into voice-stealing queue, so it will be reprocessed after killed voice died
778                    RTList<Event>::Iterator itStealEvent = pVoiceStealingQueue->allocAppend();
779              // now steal the (remaining) amount of voices                  if (itStealEvent) {
780              for (int i = iLayer; i < voicesRequired; i++)                      *itStealEvent = *itNoteOnEvent; // copy event
781                  StealVoice(pEngineChannel, itNoteOnEvent);                      itStealEvent->Param.Note.Layer = iLayer;
782                        itStealEvent->Param.Note.ReleaseTrigger = ReleaseTriggerVoice;
783              // put note-on event into voice-stealing queue, so it will be reprocessed after killed voice died                      pKey->VoiceTheftsQueued++;
784              RTList<Event>::Iterator itStealEvent = pVoiceStealingQueue->allocAppend();                  }
785              if (itStealEvent) {                  else dmsg(1,("Voice stealing queue full!\n"));
                 *itStealEvent = *itNoteOnEvent; // copy event  
                 itStealEvent->Param.Note.Layer = iLayer;  
                 itStealEvent->Param.Note.ReleaseTrigger = ReleaseTriggerVoice;  
786              }              }
             else dmsg(1,("Voice stealing queue full!\n"));  
787          }          }
788    
789          return Pool<Voice>::Iterator(); // no free voice or error          return Pool<Voice>::Iterator(); // no free voice or error
# Line 620  namespace LinuxSampler { namespace gig { Line 797  namespace LinuxSampler { namespace gig {
797       *       *
798       *  @param pEngineChannel - engine channel on which this event occured on       *  @param pEngineChannel - engine channel on which this event occured on
799       *  @param itNoteOnEvent - key, velocity and time stamp of the event       *  @param itNoteOnEvent - key, velocity and time stamp of the event
800         *  @returns 0 on success, a value < 0 if no active voice could be picked for voice stealing
801       */       */
802      void Engine::StealVoice(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent) {      int Engine::StealVoice(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent) {
803            if (!VoiceTheftsLeft) {
804                dmsg(1,("Max. voice thefts per audio fragment reached (you may raise CONFIG_MAX_VOICES).\n"));
805                return -1;
806            }
807          if (!pEventPool->poolIsEmpty()) {          if (!pEventPool->poolIsEmpty()) {
808    
809              RTList<uint>::Iterator  iuiOldestKey;              RTList<Voice>::Iterator itSelectedVoice;
             RTList<Voice>::Iterator itOldestVoice;  
810    
811              // Select one voice for voice stealing              // Select one voice for voice stealing
812              switch (VOICE_STEAL_ALGORITHM) {              switch (CONFIG_VOICE_STEAL_ALGO) {
813    
814                  // try to pick the oldest voice on the key where the new                  // try to pick the oldest voice on the key where the new
815                  // voice should be spawned, if there is no voice on that                  // voice should be spawned, if there is no voice on that
816                  // key, or no voice left to kill there, then procceed with                  // key, or no voice left to kill, then procceed with
817                  // 'oldestkey' algorithm                  // 'oldestkey' algorithm
818                  case voice_steal_algo_keymask: {                  case voice_steal_algo_oldestvoiceonkey: {
819                      midi_key_info_t* pOldestKey = &pEngineChannel->pMIDIKeyInfo[itNoteOnEvent->Param.Note.Key];                      midi_key_info_t* pSelectedKey = &pEngineChannel->pMIDIKeyInfo[itNoteOnEvent->Param.Note.Key];
820                      if (itLastStolenVoice) {                      itSelectedVoice = pSelectedKey->pActiveVoices->first();
821                          itOldestVoice = itLastStolenVoice;                      // proceed iterating if voice was created in this fragment cycle
822                          ++itOldestVoice;                      while (itSelectedVoice && !itSelectedVoice->hasRendered()) ++itSelectedVoice;
823                      }                      // if we haven't found a voice then proceed with algorithm 'oldestkey'
824                      else { // no voice stolen in this audio fragment cycle yet                      if (itSelectedVoice && itSelectedVoice->hasRendered()) break;
                         itOldestVoice = pOldestKey->pActiveVoices->first();  
                     }  
                     if (itOldestVoice) {  
                         iuiOldestKey = pOldestKey->itSelf;  
                         break; // selection succeeded  
                     }  
825                  } // no break - intentional !                  } // no break - intentional !
826    
827                  // try to pick the oldest voice on the oldest active key                  // try to pick the oldest voice on the oldest active key
828                  // (caution: must stay after 'keymask' algorithm !)                  // from the same engine channel
829                    // (caution: must stay after 'oldestvoiceonkey' algorithm !)
830                  case voice_steal_algo_oldestkey: {                  case voice_steal_algo_oldestkey: {
831                      if (itLastStolenVoice) {                      // if we already stole in this fragment, try to proceed on same key
832                          midi_key_info_t* pOldestKey = &pEngineChannel->pMIDIKeyInfo[*iuiLastStolenKey];                      if (this->itLastStolenVoice) {
833                          itOldestVoice = itLastStolenVoice;                          itSelectedVoice = this->itLastStolenVoice;
834                          ++itOldestVoice;                          do {
835                          if (!itOldestVoice) {                              ++itSelectedVoice;
836                              iuiOldestKey = iuiLastStolenKey;                          } while (itSelectedVoice && !itSelectedVoice->hasRendered()); // proceed iterating if voice was created in this fragment cycle
837                              ++iuiOldestKey;                          // found a "stealable" voice ?
838                              if (iuiOldestKey) {                          if (itSelectedVoice && itSelectedVoice->hasRendered()) {
839                                  midi_key_info_t* pOldestKey = &pEngineChannel->pMIDIKeyInfo[*iuiOldestKey];                              // remember which voice we stole, so we can simply proceed on next voice stealing
840                                  itOldestVoice = pOldestKey->pActiveVoices->first();                              this->itLastStolenVoice = itSelectedVoice;
841                              }                              break; // selection succeeded
                             else {  
                                 dmsg(1,("gig::Engine: Warning, too less voices, even for voice stealing! - Better recompile with higher MAX_AUDIO_VOICES.\n"));  
                                 return;  
                             }  
842                          }                          }
                         else iuiOldestKey = iuiLastStolenKey;  
843                      }                      }
844                      else { // no voice stolen in this audio fragment cycle yet                      // get (next) oldest key
845                          iuiOldestKey = pEngineChannel->pActiveKeys->first();                      RTList<uint>::Iterator iuiSelectedKey = (this->iuiLastStolenKey) ? ++this->iuiLastStolenKey : pEngineChannel->pActiveKeys->first();
846                          midi_key_info_t* pOldestKey = &pEngineChannel->pMIDIKeyInfo[*iuiOldestKey];                      while (iuiSelectedKey) {
847                          itOldestVoice = pOldestKey->pActiveVoices->first();                          midi_key_info_t* pSelectedKey = &pEngineChannel->pMIDIKeyInfo[*iuiSelectedKey];
848                            itSelectedVoice = pSelectedKey->pActiveVoices->first();
849                            // proceed iterating if voice was created in this fragment cycle
850                            while (itSelectedVoice && !itSelectedVoice->hasRendered()) ++itSelectedVoice;
851                            // found a "stealable" voice ?
852                            if (itSelectedVoice && itSelectedVoice->hasRendered()) {
853                                // remember which voice on which key we stole, so we can simply proceed on next voice stealing
854                                this->iuiLastStolenKey  = iuiSelectedKey;
855                                this->itLastStolenVoice = itSelectedVoice;
856                                break; // selection succeeded
857                            }
858                            ++iuiSelectedKey; // get next oldest key
859                      }                      }
860                      break;                      break;
861                  }                  }
# Line 682  namespace LinuxSampler { namespace gig { Line 864  namespace LinuxSampler { namespace gig {
864                  case voice_steal_algo_none:                  case voice_steal_algo_none:
865                  default: {                  default: {
866                      dmsg(1,("No free voice (voice stealing disabled)!\n"));                      dmsg(1,("No free voice (voice stealing disabled)!\n"));
867                      return;                      return -1;
868                  }                  }
869              }              }
870    
871              //FIXME: can be removed, just a sanity check for debugging              // if we couldn't steal a voice from the same engine channel then
872              if (!itOldestVoice->IsActive()) dmsg(1,("gig::Engine: ERROR, tried to steal a voice which was not active !!!\n"));              // steal oldest voice on the oldest key from any other engine channel
873                // (the smaller engine channel number, the higher priority)
874                if (!itSelectedVoice || !itSelectedVoice->hasRendered()) {
875                    EngineChannel* pSelectedChannel;
876                    int            iChannelIndex;
877                    // select engine channel
878                    if (pLastStolenChannel) {
879                        pSelectedChannel = pLastStolenChannel;
880                        iChannelIndex    = pSelectedChannel->iEngineIndexSelf;
881                    } else { // pick the engine channel followed by this engine channel
882                        iChannelIndex    = (pEngineChannel->iEngineIndexSelf + 1) % engineChannels.size();
883                        pSelectedChannel = engineChannels[iChannelIndex];
884                    }
885                    // iterate through engine channels
886                    while (true) {
887                        // if we already stole in this fragment, try to proceed on same key
888                        if (this->itLastStolenVoiceGlobally) {
889                            itSelectedVoice = this->itLastStolenVoiceGlobally;
890                            do {
891                                ++itSelectedVoice;
892                            } while (itSelectedVoice && !itSelectedVoice->hasRendered()); // proceed iterating if voice was created in this fragment cycle
893                            // break if selection succeeded
894                            if (itSelectedVoice && itSelectedVoice->hasRendered()) {
895                                // remember which voice we stole, so we can simply proceed on next voice stealing
896                                this->itLastStolenVoiceGlobally = itSelectedVoice;
897                                break; // selection succeeded
898                            }
899                        }
900                        // get (next) oldest key
901                        RTList<uint>::Iterator iuiSelectedKey = (this->iuiLastStolenKey) ? ++this->iuiLastStolenKey : pSelectedChannel->pActiveKeys->first();
902                        while (iuiSelectedKey) {
903                            midi_key_info_t* pSelectedKey = &pEngineChannel->pMIDIKeyInfo[*iuiSelectedKey];
904                            itSelectedVoice = pSelectedKey->pActiveVoices->first();
905                            // proceed iterating if voice was created in this fragment cycle
906                            while (itSelectedVoice && !itSelectedVoice->hasRendered()) ++itSelectedVoice;
907                            // found a "stealable" voice ?
908                            if (itSelectedVoice && itSelectedVoice->hasRendered()) {
909                                // remember which voice on which key on which engine channel we stole, so we can simply proceed on next voice stealing
910                                this->iuiLastStolenKeyGlobally  = iuiSelectedKey;
911                                this->itLastStolenVoiceGlobally = itSelectedVoice;
912                                this->pLastStolenChannel        = pSelectedChannel;
913                                break; // selection succeeded
914                            }
915                            ++iuiSelectedKey; // get next key on current engine channel
916                        }
917                        // get next engine channel
918                        iChannelIndex    = (iChannelIndex + 1) % engineChannels.size();
919                        pSelectedChannel = engineChannels[iChannelIndex];
920                    }
921                }
922    
923                #if CONFIG_DEVMODE
924                if (!itSelectedVoice->IsActive()) {
925                    dmsg(1,("gig::Engine: ERROR, tried to steal a voice which was not active !!!\n"));
926                    return -1;
927                }
928                #endif // CONFIG_DEVMODE
929    
930              // now kill the selected voice              // now kill the selected voice
931              itOldestVoice->Kill(itNoteOnEvent);              itSelectedVoice->Kill(itNoteOnEvent);
932              // remember which voice on which key we stole, so we can simply proceed for the next voice stealing  
933              this->itLastStolenVoice = itOldestVoice;              --VoiceTheftsLeft;
934              this->iuiLastStolenKey = iuiOldestKey;  
935                return 0; // success
936            }
937            else {
938                dmsg(1,("Event pool emtpy!\n"));
939                return -1;
940          }          }
         else dmsg(1,("Event pool emtpy!\n"));  
941      }      }
942    
943      /**      /**
# Line 754  namespace LinuxSampler { namespace gig { Line 996  namespace LinuxSampler { namespace gig {
996      void Engine::ProcessControlChange(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itControlChangeEvent) {      void Engine::ProcessControlChange(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itControlChangeEvent) {
997          dmsg(4,("Engine::ContinuousController cc=%d v=%d\n", itControlChangeEvent->Param.CC.Controller, itControlChangeEvent->Param.CC.Value));          dmsg(4,("Engine::ContinuousController cc=%d v=%d\n", itControlChangeEvent->Param.CC.Controller, itControlChangeEvent->Param.CC.Value));
998    
999          switch (itControlChangeEvent->Param.CC.Controller) {          // update controller value in the engine channel's controller table
1000              case 64: {          pEngineChannel->ControllerTable[itControlChangeEvent->Param.CC.Controller] = itControlChangeEvent->Param.CC.Value;
1001                  if (itControlChangeEvent->Param.CC.Value >= 64 && !pEngineChannel->SustainPedal) {  
1002            // move event from the unsorted event list to the control change event list
1003            Pool<Event>::Iterator itControlChangeEventOnCCList = itControlChangeEvent.moveToEndOf(pEngineChannel->pCCEvents);
1004    
1005            switch (itControlChangeEventOnCCList->Param.CC.Controller) {
1006                case 7: { // volume
1007                    //TODO: not sample accurate yet
1008                    pEngineChannel->GlobalVolume = (float) itControlChangeEventOnCCList->Param.CC.Value / 127.0f;
1009                    break;
1010                }
1011                case 10: { // panpot
1012                    //TODO: not sample accurate yet
1013                    const int pan = (int) itControlChangeEventOnCCList->Param.CC.Value - 64;
1014                    pEngineChannel->GlobalPanLeft  = 1.0f - float(RTMath::Max(pan, 0)) /  63.0f;
1015                    pEngineChannel->GlobalPanRight = 1.0f - float(RTMath::Min(pan, 0)) / -64.0f;
1016                    break;
1017                }
1018                case 64: { // sustain
1019                    if (itControlChangeEventOnCCList->Param.CC.Value >= 64 && !pEngineChannel->SustainPedal) {
1020                      dmsg(4,("PEDAL DOWN\n"));                      dmsg(4,("PEDAL DOWN\n"));
1021                      pEngineChannel->SustainPedal = true;                      pEngineChannel->SustainPedal = true;
1022    
1023                      // cancel release process of voices if necessary                      // cancel release process of voices if necessary
1024                      RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first();                      RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first();
1025                      if (iuiKey) {                      for (; iuiKey; ++iuiKey) {
1026                          itControlChangeEvent->Type = Event::type_cancel_release; // transform event type                          midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey];
1027                          while (iuiKey) {                          if (!pKey->KeyPressed) {
1028                              midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey];                              RTList<Event>::Iterator itNewEvent = pKey->pEvents->allocAppend();
1029                              ++iuiKey;                              if (itNewEvent) {
1030                              if (!pKey->KeyPressed) {                                  *itNewEvent = *itControlChangeEventOnCCList; // copy event to the key's own event list
1031                                  RTList<Event>::Iterator itNewEvent = pKey->pEvents->allocAppend();                                  itNewEvent->Type = Event::type_cancel_release; // transform event type
                                 if (itNewEvent) *itNewEvent = *itControlChangeEvent; // copy event to the key's own event list  
                                 else dmsg(1,("Event pool emtpy!\n"));  
1032                              }                              }
1033                                else dmsg(1,("Event pool emtpy!\n"));
1034                          }                          }
1035                      }                      }
1036                  }                  }
1037                  if (itControlChangeEvent->Param.CC.Value < 64 && pEngineChannel->SustainPedal) {                  if (itControlChangeEventOnCCList->Param.CC.Value < 64 && pEngineChannel->SustainPedal) {
1038                      dmsg(4,("PEDAL UP\n"));                      dmsg(4,("PEDAL UP\n"));
1039                      pEngineChannel->SustainPedal = false;                      pEngineChannel->SustainPedal = false;
1040    
1041                      // release voices if their respective key is not pressed                      // release voices if their respective key is not pressed
1042                      RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first();                      RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first();
1043                      if (iuiKey) {                      for (; iuiKey; ++iuiKey) {
1044                          itControlChangeEvent->Type = Event::type_release; // transform event type                          midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey];
1045                          while (iuiKey) {                          if (!pKey->KeyPressed) {
1046                              midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey];                              RTList<Event>::Iterator itNewEvent = pKey->pEvents->allocAppend();
1047                              ++iuiKey;                              if (itNewEvent) {
1048                              if (!pKey->KeyPressed) {                                  *itNewEvent = *itControlChangeEventOnCCList; // copy event to the key's own event list
1049                                  RTList<Event>::Iterator itNewEvent = pKey->pEvents->allocAppend();                                  itNewEvent->Type = Event::type_release; // transform event type
                                 if (itNewEvent) *itNewEvent = *itControlChangeEvent; // copy event to the key's own event list  
                                 else dmsg(1,("Event pool emtpy!\n"));  
1050                              }                              }
1051                                else dmsg(1,("Event pool emtpy!\n"));
1052                          }                          }
1053                      }                      }
1054                  }                  }
1055                  break;                  break;
1056              }              }
         }  
1057    
         // update controller value in the engine's controller table  
         pEngineChannel->ControllerTable[itControlChangeEvent->Param.CC.Controller] = itControlChangeEvent->Param.CC.Value;  
1058    
1059          // move event from the unsorted event list to the control change event list              // Channel Mode Messages
1060          itControlChangeEvent.moveToEndOf(pCCEvents);  
1061                case 120: { // all sound off
1062                    KillAllVoices(pEngineChannel, itControlChangeEventOnCCList);
1063                    break;
1064                }
1065                case 121: { // reset all controllers
1066                    pEngineChannel->ResetControllers();
1067                    break;
1068                }
1069                case 123: { // all notes off
1070                    ReleaseAllVoices(pEngineChannel, itControlChangeEventOnCCList);
1071                    break;
1072                }
1073            }
1074      }      }
1075    
1076      /**      /**
# Line 820  namespace LinuxSampler { namespace gig { Line 1088  namespace LinuxSampler { namespace gig {
1088    
1089          switch (id) {          switch (id) {
1090              case 0x41: { // Roland              case 0x41: { // Roland
1091                    dmsg(3,("Roland Sysex\n"));
1092                  uint8_t device_id, model_id, cmd_id;                  uint8_t device_id, model_id, cmd_id;
1093                  if (!reader.pop(&device_id)) goto free_sysex_data;                  if (!reader.pop(&device_id)) goto free_sysex_data;
1094                  if (!reader.pop(&model_id))  goto free_sysex_data;                  if (!reader.pop(&model_id))  goto free_sysex_data;
# Line 832  namespace LinuxSampler { namespace gig { Line 1101  namespace LinuxSampler { namespace gig {
1101                  const RingBuffer<uint8_t>::NonVolatileReader checksum_reader = reader; // so we can calculate the check sum later                  const RingBuffer<uint8_t>::NonVolatileReader checksum_reader = reader; // so we can calculate the check sum later
1102                  if (reader.read(&addr[0], 3) != 3) goto free_sysex_data;                  if (reader.read(&addr[0], 3) != 3) goto free_sysex_data;
1103                  if (addr[0] == 0x40 && addr[1] == 0x00) { // System Parameters                  if (addr[0] == 0x40 && addr[1] == 0x00) { // System Parameters
1104                        dmsg(3,("\tSystem Parameter\n"));
1105                  }                  }
1106                  else if (addr[0] == 0x40 && addr[1] == 0x01) { // Common Parameters                  else if (addr[0] == 0x40 && addr[1] == 0x01) { // Common Parameters
1107                        dmsg(3,("\tCommon Parameter\n"));
1108                  }                  }
1109                  else if (addr[0] == 0x40 && (addr[1] & 0xf0) == 0x10) { // Part Parameters (1)                  else if (addr[0] == 0x40 && (addr[1] & 0xf0) == 0x10) { // Part Parameters (1)
1110                      switch (addr[3]) {                      dmsg(3,("\tPart Parameter\n"));
1111                        switch (addr[2]) {
1112                          case 0x40: { // scale tuning                          case 0x40: { // scale tuning
1113                                dmsg(3,("\t\tScale Tuning\n"));
1114                              uint8_t scale_tunes[12]; // detuning of all 12 semitones of an octave                              uint8_t scale_tunes[12]; // detuning of all 12 semitones of an octave
1115                              if (reader.read(&scale_tunes[0], 12) != 12) goto free_sysex_data;                              if (reader.read(&scale_tunes[0], 12) != 12) goto free_sysex_data;
1116                              uint8_t checksum;                              uint8_t checksum;
1117                              if (!reader.pop(&checksum))                      goto free_sysex_data;                              if (!reader.pop(&checksum)) goto free_sysex_data;
1118                              if (GSCheckSum(checksum_reader, 12) != checksum) goto free_sysex_data;                              #if CONFIG_ASSERT_GS_SYSEX_CHECKSUM
1119                                if (GSCheckSum(checksum_reader, 12)) goto free_sysex_data;
1120                                #endif // CONFIG_ASSERT_GS_SYSEX_CHECKSUM
1121                              for (int i = 0; i < 12; i++) scale_tunes[i] -= 64;                              for (int i = 0; i < 12; i++) scale_tunes[i] -= 64;
1122                              AdjustScale((int8_t*) scale_tunes);                              AdjustScale((int8_t*) scale_tunes);
1123                                dmsg(3,("\t\t\tNew scale applied.\n"));
1124                              break;                              break;
1125                          }                          }
1126                      }                      }
# Line 889  namespace LinuxSampler { namespace gig { Line 1165  namespace LinuxSampler { namespace gig {
1165      }      }
1166    
1167      /**      /**
1168         * Releases all voices on an engine channel. All voices will go into
1169         * the release stage and thus it might take some time (e.g. dependant to
1170         * their envelope release time) until they actually die.
1171         *
1172         * @param pEngineChannel - engine channel on which all voices should be released
1173         * @param itReleaseEvent - event which caused this releasing of all voices
1174         */
1175        void Engine::ReleaseAllVoices(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itReleaseEvent) {
1176            RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first();
1177            while (iuiKey) {
1178                midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey];
1179                ++iuiKey;
1180                // append a 'release' event to the key's own event list
1181                RTList<Event>::Iterator itNewEvent = pKey->pEvents->allocAppend();
1182                if (itNewEvent) {
1183                    *itNewEvent = *itReleaseEvent; // copy original event (to the key's event list)
1184                    itNewEvent->Type = Event::type_release; // transform event type
1185                }
1186                else dmsg(1,("Event pool emtpy!\n"));
1187            }
1188        }
1189    
1190        /**
1191         * Kills all voices on an engine channel as soon as possible. Voices
1192         * won't get into release state, their volume level will be ramped down
1193         * as fast as possible.
1194         *
1195         * @param pEngineChannel - engine channel on which all voices should be killed
1196         * @param itKillEvent    - event which caused this killing of all voices
1197         */
1198        void Engine::KillAllVoices(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itKillEvent) {
1199            RTList<uint>::Iterator iuiKey = pEngineChannel->pActiveKeys->first();
1200            RTList<uint>::Iterator end    = pEngineChannel->pActiveKeys->end();
1201            while (iuiKey != end) { // iterate through all active keys
1202                midi_key_info_t* pKey = &pEngineChannel->pMIDIKeyInfo[*iuiKey];
1203                ++iuiKey;
1204                RTList<Voice>::Iterator itVoice     = pKey->pActiveVoices->first();
1205                RTList<Voice>::Iterator itVoicesEnd = pKey->pActiveVoices->end();
1206                for (; itVoice != itVoicesEnd; ++itVoice) { // iterate through all voices on this key
1207                    itVoice->Kill(itKillEvent);
1208                }
1209            }
1210        }
1211    
1212        /**
1213       * Initialize the parameter sequence for the modulation destination given by       * Initialize the parameter sequence for the modulation destination given by
1214       * by 'dst' with the constant value given by val.       * by 'dst' with the constant value given by val.
1215       */       */
# Line 901  namespace LinuxSampler { namespace gig { Line 1222  namespace LinuxSampler { namespace gig {
1222             m[i+2] = val;             m[i+2] = val;
1223             m[i+3] = val;             m[i+3] = val;
1224          }          }
1225      }          }
1226    
1227      uint Engine::VoiceCount() {      uint Engine::VoiceCount() {
1228          return ActiveVoiceCount;          return ActiveVoiceCount;
# Line 932  namespace LinuxSampler { namespace gig { Line 1253  namespace LinuxSampler { namespace gig {
1253      }      }
1254    
1255      String Engine::EngineName() {      String Engine::EngineName() {
1256          return "GigEngine";          return LS_GIG_ENGINE_NAME;
1257      }      }
1258    
1259      String Engine::Description() {      String Engine::Description() {
# Line 940  namespace LinuxSampler { namespace gig { Line 1261  namespace LinuxSampler { namespace gig {
1261      }      }
1262    
1263      String Engine::Version() {      String Engine::Version() {
1264          String s = "$Revision: 1.26 $";          String s = "$Revision: 1.42 $";
1265          return s.substr(11, s.size() - 13); // cut dollar signs, spaces and CVS macro keyword          return s.substr(11, s.size() - 13); // cut dollar signs, spaces and CVS macro keyword
1266      }      }
1267    
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