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

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revision 438 by persson, Wed Mar 9 22:12:15 2005 UTC revision 554 by schoenebeck, Thu May 19 19:25:14 2005 UTC
# Line 29  namespace LinuxSampler { namespace gig { Line 29  namespace LinuxSampler { namespace gig {
29          pMIDIKeyInfo = new midi_key_info_t[128];          pMIDIKeyInfo = new midi_key_info_t[128];
30          pEngine      = NULL;          pEngine      = NULL;
31          pInstrument  = NULL;          pInstrument  = NULL;
32          pEventQueue  = new RingBuffer<Event>(MAX_EVENTS_PER_FRAGMENT, 0);          pEvents      = NULL; // we allocate when we retrieve the right Engine object
33            pCCEvents    = NULL; // we allocate when we retrieve the right Engine object
34            pEventQueue  = new RingBuffer<Event>(CONFIG_MAX_EVENTS_PER_FRAGMENT, 0);
35          pActiveKeys  = new Pool<uint>(128);          pActiveKeys  = new Pool<uint>(128);
36          for (uint i = 0; i < 128; i++) {          for (uint i = 0; i < 128; i++) {
37              pMIDIKeyInfo[i].pActiveVoices  = NULL; // we allocate when we retrieve the right Engine object              pMIDIKeyInfo[i].pActiveVoices  = NULL; // we allocate when we retrieve the right Engine object
# Line 37  namespace LinuxSampler { namespace gig { Line 39  namespace LinuxSampler { namespace gig {
39              pMIDIKeyInfo[i].Active         = false;              pMIDIKeyInfo[i].Active         = false;
40              pMIDIKeyInfo[i].ReleaseTrigger = false;              pMIDIKeyInfo[i].ReleaseTrigger = false;
41              pMIDIKeyInfo[i].pEvents        = NULL; // we allocate when we retrieve the right Engine object              pMIDIKeyInfo[i].pEvents        = NULL; // we allocate when we retrieve the right Engine object
42                pMIDIKeyInfo[i].VoiceTheftsQueued = 0;
43              pMIDIKeyInfo[i].RoundRobinIndex = 0;              pMIDIKeyInfo[i].RoundRobinIndex = 0;
44          }          }
45            for (uint i = 0; i < Event::destination_count; i++) {
46                pSynthesisEvents[i] = NULL; // we allocate when we retrieve the right Engine object
47            }
48          InstrumentIdx  = -1;          InstrumentIdx  = -1;
49          InstrumentStat = -1;          InstrumentStat = -1;
50          AudioDeviceChannelLeft  = -1;          AudioDeviceChannelLeft  = -1;
# Line 46  namespace LinuxSampler { namespace gig { Line 52  namespace LinuxSampler { namespace gig {
52      }      }
53    
54      EngineChannel::~EngineChannel() {      EngineChannel::~EngineChannel() {
55            DisconnectAudioOutputDevice();
56          if (pInstrument) Engine::instruments.HandBack(pInstrument, this);          if (pInstrument) Engine::instruments.HandBack(pInstrument, this);
         for (uint i = 0; i < 128; i++) {  
             if (pMIDIKeyInfo[i].pActiveVoices) {  
                 pMIDIKeyInfo[i].pActiveVoices->clear();  
                 delete pMIDIKeyInfo[i].pActiveVoices;  
             }  
             if (pMIDIKeyInfo[i].pEvents) {  
                 pMIDIKeyInfo[i].pEvents->clear();  
                 delete pMIDIKeyInfo[i].pEvents;  
             }  
         }  
57          if (pEventQueue) delete pEventQueue;          if (pEventQueue) delete pEventQueue;
58          if (pActiveKeys) delete pActiveKeys;          if (pActiveKeys) delete pActiveKeys;
59          if (pMIDIKeyInfo) delete[] pMIDIKeyInfo;          if (pMIDIKeyInfo) delete[] pMIDIKeyInfo;
# Line 73  namespace LinuxSampler { namespace gig { Line 70  namespace LinuxSampler { namespace gig {
70          GlobalPanRight      = 1.0f;          GlobalPanRight      = 1.0f;
71          CurrentKeyDimension = 0;          CurrentKeyDimension = 0;
72    
73          // set all MIDI controller values to zero          ResetControllers();
         memset(ControllerTable, 0x00, 128);  
   
         // reset voice stealing parameters  
         itLastStolenVoice = RTList<Voice>::Iterator();  
         iuiLastStolenKey  = RTList<uint>::Iterator();  
74    
75          // reset key info          // reset key info
76          for (uint i = 0; i < 128; i++) {          for (uint i = 0; i < 128; i++) {
# Line 90  namespace LinuxSampler { namespace gig { Line 82  namespace LinuxSampler { namespace gig {
82              pMIDIKeyInfo[i].Active         = false;              pMIDIKeyInfo[i].Active         = false;
83              pMIDIKeyInfo[i].ReleaseTrigger = false;              pMIDIKeyInfo[i].ReleaseTrigger = false;
84              pMIDIKeyInfo[i].itSelf         = Pool<uint>::Iterator();              pMIDIKeyInfo[i].itSelf         = Pool<uint>::Iterator();
85                pMIDIKeyInfo[i].VoiceTheftsQueued = 0;
86          }          }
87    
88          // reset all key groups          // reset all key groups
# Line 198  namespace LinuxSampler { namespace gig { Line 191  namespace LinuxSampler { namespace gig {
191    
192      /**      /**
193       * Will be called by the InstrumentResourceManager when the instrument       * Will be called by the InstrumentResourceManager when the instrument
194       * we are currently using in this engine is going to be updated, so we       * we are currently using on this EngineChannel is going to be updated,
195       * can stop playback before that happens.       * so we can stop playback before that happens.
196       */       */
197      void EngineChannel::ResourceToBeUpdated(::gig::Instrument* pResource, void*& pUpdateArg) {      void EngineChannel::ResourceToBeUpdated(::gig::Instrument* pResource, void*& pUpdateArg) {
198          dmsg(3,("gig::Engine: Received instrument update message.\n"));          dmsg(3,("gig::Engine: Received instrument update message.\n"));
# Line 217  namespace LinuxSampler { namespace gig { Line 210  namespace LinuxSampler { namespace gig {
210          if (pEngine) pEngine->Enable();          if (pEngine) pEngine->Enable();
211      }      }
212    
213        /**
214         * Will be called by the InstrumentResourceManager on progress changes
215         * while loading or realoading an instrument for this EngineChannel.
216         *
217         * @param fProgress - current progress as value between 0.0 and 1.0
218         */
219        void EngineChannel::OnResourceProgress(float fProgress) {
220            this->InstrumentStat = int(fProgress * 100.0f);
221            dmsg(7,("gig::EngineChannel: progress %d%", InstrumentStat));
222        }
223    
224      void EngineChannel::Connect(AudioOutputDevice* pAudioOut) {      void EngineChannel::Connect(AudioOutputDevice* pAudioOut) {
225          if (pEngine && pEngine->pAudioOutputDevice != pAudioOut) {          if (pEngine) {
226                if (pEngine->pAudioOutputDevice == pAudioOut) return;
227              DisconnectAudioOutputDevice();              DisconnectAudioOutputDevice();
228          }          }
229          pEngine = Engine::AcquireEngine(this, pAudioOut);          pEngine = Engine::AcquireEngine(this, pAudioOut);
230          ResetInternal();          ResetInternal();
231            pEvents   = new RTList<Event>(pEngine->pEventPool);
232            pCCEvents = new RTList<Event>(pEngine->pEventPool);
233            for (uint i = 0; i < Event::destination_count; i++) {
234                pSynthesisEvents[i] = new RTList<Event>(pEngine->pEventPool);
235            }
236          for (uint i = 0; i < 128; i++) {          for (uint i = 0; i < 128; i++) {
237              pMIDIKeyInfo[i].pActiveVoices = new RTList<Voice>(pEngine->pVoicePool);              pMIDIKeyInfo[i].pActiveVoices = new RTList<Voice>(pEngine->pVoicePool);
238              pMIDIKeyInfo[i].pEvents       = new RTList<Event>(pEngine->pEventPool);              pMIDIKeyInfo[i].pEvents       = new RTList<Event>(pEngine->pEventPool);
# Line 236  namespace LinuxSampler { namespace gig { Line 246  namespace LinuxSampler { namespace gig {
246      void EngineChannel::DisconnectAudioOutputDevice() {      void EngineChannel::DisconnectAudioOutputDevice() {
247          if (pEngine) { // if clause to prevent disconnect loops          if (pEngine) { // if clause to prevent disconnect loops
248              ResetInternal();              ResetInternal();
249                if (pEvents) {
250                    delete pEvents;
251                    pEvents = NULL;
252                }
253                if (pCCEvents) {
254                    delete pCCEvents;
255                    pCCEvents = NULL;
256                }
257              for (uint i = 0; i < 128; i++) {              for (uint i = 0; i < 128; i++) {
258                  if (pMIDIKeyInfo[i].pActiveVoices) {                  if (pMIDIKeyInfo[i].pActiveVoices) {
259                      delete pMIDIKeyInfo[i].pActiveVoices;                      delete pMIDIKeyInfo[i].pActiveVoices;
# Line 246  namespace LinuxSampler { namespace gig { Line 264  namespace LinuxSampler { namespace gig {
264                      pMIDIKeyInfo[i].pEvents = NULL;                      pMIDIKeyInfo[i].pEvents = NULL;
265                  }                  }
266              }              }
267                for (uint i = 0; i < Event::destination_count; i++) {
268                    if (pSynthesisEvents[i]) {
269                        delete pSynthesisEvents[i];
270                        pSynthesisEvents[i] = NULL;
271                    }
272                }
273              Engine* oldEngine = pEngine;              Engine* oldEngine = pEngine;
274              AudioOutputDevice* oldAudioDevice = pEngine->pAudioOutputDevice;              AudioOutputDevice* oldAudioDevice = pEngine->pAudioOutputDevice;
275              pEngine = NULL;              pEngine = NULL;
# Line 359  namespace LinuxSampler { namespace gig { Line 383  namespace LinuxSampler { namespace gig {
383          }          }
384      }      }
385    
386        void EngineChannel::ClearEventLists() {
387            pEvents->clear();
388            pCCEvents->clear();
389            for (uint i = 0; i < Event::destination_count; i++) {
390                pSynthesisEvents[i]->clear();
391            }
392            // empty MIDI key specific event lists
393            {
394                RTList<uint>::Iterator iuiKey = pActiveKeys->first();
395                RTList<uint>::Iterator end    = pActiveKeys->end();
396                for(; iuiKey != end; ++iuiKey) {
397                    pMIDIKeyInfo[*iuiKey].pEvents->clear(); // free all events on the key
398                }
399            }
400        }
401    
402        void EngineChannel::ResetControllers() {
403            // set all MIDI controller values to zero
404            memset(ControllerTable, 0x00, 128);
405        }
406    
407        /**
408         * Copy all events from the engine channel's input event queue buffer to
409         * the internal event list. This will be done at the beginning of each
410         * audio cycle (that is each RenderAudio() call) to distinguish all
411         * events which have to be processed in the current audio cycle. Each
412         * EngineChannel has it's own input event queue for the common channel
413         * specific events (like NoteOn, NoteOff and ControlChange events).
414         * Beside that, the engine also has a input event queue for global
415         * events (usually SysEx messages).
416         *
417         * @param Samples - number of sample points to be processed in the
418         *                  current audio cycle
419         */
420        void EngineChannel::ImportEvents(uint Samples) {
421            RingBuffer<Event>::NonVolatileReader eventQueueReader = pEventQueue->get_non_volatile_reader();
422            Event* pEvent;
423            while (true) {
424                // get next event from input event queue
425                if (!(pEvent = eventQueueReader.pop())) break;
426                // if younger event reached, ignore that and all subsequent ones for now
427                if (pEvent->FragmentPos() >= Samples) {
428                    eventQueueReader--;
429                    dmsg(2,("Younger Event, pos=%d ,Samples=%d!\n",pEvent->FragmentPos(),Samples));
430                    pEvent->ResetFragmentPos();
431                    break;
432                }
433                // copy event to internal event list
434                if (pEvents->poolIsEmpty()) {
435                    dmsg(1,("Event pool emtpy!\n"));
436                    break;
437                }
438                *pEvents->allocAppend() = *pEvent;
439            }
440            eventQueueReader.free(); // free all copied events from input queue
441        }
442    
443      float EngineChannel::Volume() {      float EngineChannel::Volume() {
444          return GlobalVolume;          return GlobalVolume;
445      }      }
# Line 387  namespace LinuxSampler { namespace gig { Line 468  namespace LinuxSampler { namespace gig {
468          return InstrumentStat;          return InstrumentStat;
469      }      }
470    
471        String EngineChannel::EngineName() {
472            return LS_GIG_ENGINE_NAME;
473        }
474        
475  }} // namespace LinuxSampler::gig  }} // namespace LinuxSampler::gig
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