/[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 412 by schoenebeck, Sat Feb 26 22:44:51 2005 UTC revision 660 by schoenebeck, Fri Jun 17 19:49:30 2005 UTC
# Line 23  Line 23 
23    
24  #include "EngineChannel.h"  #include "EngineChannel.h"
25    
26  namespace LinuxSampler { namespace gig {      namespace LinuxSampler { namespace gig {
27    
28      EngineChannel::EngineChannel() {      EngineChannel::EngineChannel() {
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;
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;
# Line 45  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;
60      }      }
61    
62      /**      /**
63         * Implementation of virtual method from abstract EngineChannel interface.
64         * This method will periodically be polled (e.g. by the LSCP server) to
65         * check if some engine channel parameter has changed since the last
66         * StatusChanged() call.
67         *
68         * TODO: This "poll method" is just a lazy solution and might be
69         *       replaced in future.
70         *
71         * @returns true if engine channel status has changed since last
72         *          StatusChanged() call
73         */
74        bool EngineChannel::StatusChanged() {
75            bool b = bStatusChanged;
76            bStatusChanged = false;
77            return b;
78        }
79    
80        /**
81       * This method is not thread safe!       * This method is not thread safe!
82       */       */
83      void EngineChannel::ResetInternal() {      void EngineChannel::ResetInternal() {
84          Pitch               = 0;          Pitch               = 0;
85          SustainPedal        = false;          SustainPedal        = false;
86          GlobalVolume        = 1.0;          GlobalVolume        = 1.0;
87            GlobalPanLeft       = 1.0f;
88            GlobalPanRight      = 1.0f;
89          CurrentKeyDimension = 0;          CurrentKeyDimension = 0;
90    
91          // set all MIDI controller values to zero          ResetControllers();
         memset(ControllerTable, 0x00, 128);  
   
         // reset voice stealing parameters  
         itLastStolenVoice = RTList<Voice>::Iterator();  
         iuiLastStolenKey  = RTList<uint>::Iterator();  
92    
93          // reset key info          // reset key info
94          for (uint i = 0; i < 128; i++) {          for (uint i = 0; i < 128; i++) {
# Line 87  namespace LinuxSampler { namespace gig { Line 100  namespace LinuxSampler { namespace gig {
100              pMIDIKeyInfo[i].Active         = false;              pMIDIKeyInfo[i].Active         = false;
101              pMIDIKeyInfo[i].ReleaseTrigger = false;              pMIDIKeyInfo[i].ReleaseTrigger = false;
102              pMIDIKeyInfo[i].itSelf         = Pool<uint>::Iterator();              pMIDIKeyInfo[i].itSelf         = Pool<uint>::Iterator();
103                pMIDIKeyInfo[i].VoiceTheftsQueued = 0;
104          }          }
105    
106          // reset all key groups          // reset all key groups
# Line 100  namespace LinuxSampler { namespace gig { Line 114  namespace LinuxSampler { namespace gig {
114          pEventQueue->init();          pEventQueue->init();
115    
116          if (pEngine) pEngine->ResetInternal();          if (pEngine) pEngine->ResetInternal();
117    
118            // status of engine channel has changed, so set notify flag
119            bStatusChanged = true;
120      }      }
121    
122      LinuxSampler::Engine* EngineChannel::GetEngine() {      LinuxSampler::Engine* EngineChannel::GetEngine() {
# Line 134  namespace LinuxSampler { namespace gig { Line 151  namespace LinuxSampler { namespace gig {
151      void EngineChannel::LoadInstrument() {      void EngineChannel::LoadInstrument() {
152    
153          if (pEngine) pEngine->DisableAndLock();          if (pEngine) pEngine->DisableAndLock();
154            
155          ResetInternal();          ResetInternal();
156            
157          // free old instrument          // free old instrument
158          if (pInstrument) {          if (pInstrument) {
159              // give old instrument back to instrument manager              // give old instrument back to instrument manager
# Line 195  namespace LinuxSampler { namespace gig { Line 212  namespace LinuxSampler { namespace gig {
212    
213      /**      /**
214       * Will be called by the InstrumentResourceManager when the instrument       * Will be called by the InstrumentResourceManager when the instrument
215       * 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,
216       * can stop playback before that happens.       * so we can stop playback before that happens.
217       */       */
218      void EngineChannel::ResourceToBeUpdated(::gig::Instrument* pResource, void*& pUpdateArg) {      void EngineChannel::ResourceToBeUpdated(::gig::Instrument* pResource, void*& pUpdateArg) {
219          dmsg(3,("gig::Engine: Received instrument update message.\n"));          dmsg(3,("gig::Engine: Received instrument update message.\n"));
# Line 212  namespace LinuxSampler { namespace gig { Line 229  namespace LinuxSampler { namespace gig {
229      void EngineChannel::ResourceUpdated(::gig::Instrument* pOldResource, ::gig::Instrument* pNewResource, void* pUpdateArg) {      void EngineChannel::ResourceUpdated(::gig::Instrument* pOldResource, ::gig::Instrument* pNewResource, void* pUpdateArg) {
230          this->pInstrument = pNewResource; //TODO: there are couple of engine parameters we should update here as well if the instrument was updated (see LoadInstrument())          this->pInstrument = pNewResource; //TODO: there are couple of engine parameters we should update here as well if the instrument was updated (see LoadInstrument())
231          if (pEngine) pEngine->Enable();          if (pEngine) pEngine->Enable();
232            bStatusChanged = true; // status of engine has changed, so set notify flag
233        }
234    
235        /**
236         * Will be called by the InstrumentResourceManager on progress changes
237         * while loading or realoading an instrument for this EngineChannel.
238         *
239         * @param fProgress - current progress as value between 0.0 and 1.0
240         */
241        void EngineChannel::OnResourceProgress(float fProgress) {
242            this->InstrumentStat = int(fProgress * 100.0f);
243            dmsg(7,("gig::EngineChannel: progress %d%", InstrumentStat));
244            bStatusChanged = true; // status of engine has changed, so set notify flag
245      }      }
246    
247      void EngineChannel::Connect(AudioOutputDevice* pAudioOut) {      void EngineChannel::Connect(AudioOutputDevice* pAudioOut) {
248          if (pEngine && pEngine->pAudioOutputDevice != pAudioOut) {          if (pEngine) {
249                if (pEngine->pAudioOutputDevice == pAudioOut) return;
250              DisconnectAudioOutputDevice();              DisconnectAudioOutputDevice();
251          }          }
252          pEngine = Engine::AcquireEngine(this, pAudioOut);          pEngine = Engine::AcquireEngine(this, pAudioOut);
253          ResetInternal();                  ResetInternal();
254            pEvents   = new RTList<Event>(pEngine->pEventPool);
255            pCCEvents = new RTList<Event>(pEngine->pEventPool);
256            for (uint i = 0; i < Event::destination_count; i++) {
257                pSynthesisEvents[i] = new RTList<Event>(pEngine->pEventPool);
258            }
259          for (uint i = 0; i < 128; i++) {          for (uint i = 0; i < 128; i++) {
260              pMIDIKeyInfo[i].pActiveVoices = new RTList<Voice>(pEngine->pVoicePool);              pMIDIKeyInfo[i].pActiveVoices = new RTList<Voice>(pEngine->pVoicePool);
261              pMIDIKeyInfo[i].pEvents       = new RTList<Event>(pEngine->pEventPool);              pMIDIKeyInfo[i].pEvents       = new RTList<Event>(pEngine->pEventPool);
# Line 233  namespace LinuxSampler { namespace gig { Line 269  namespace LinuxSampler { namespace gig {
269      void EngineChannel::DisconnectAudioOutputDevice() {      void EngineChannel::DisconnectAudioOutputDevice() {
270          if (pEngine) { // if clause to prevent disconnect loops          if (pEngine) { // if clause to prevent disconnect loops
271              ResetInternal();              ResetInternal();
272                if (pEvents) {
273                    delete pEvents;
274                    pEvents = NULL;
275                }
276                if (pCCEvents) {
277                    delete pCCEvents;
278                    pCCEvents = NULL;
279                }
280              for (uint i = 0; i < 128; i++) {              for (uint i = 0; i < 128; i++) {
281                  if (pMIDIKeyInfo[i].pActiveVoices) delete pMIDIKeyInfo[i].pActiveVoices;                  if (pMIDIKeyInfo[i].pActiveVoices) {
282                  if (pMIDIKeyInfo[i].pEvents)       delete pMIDIKeyInfo[i].pEvents;                      delete pMIDIKeyInfo[i].pActiveVoices;
283                        pMIDIKeyInfo[i].pActiveVoices = NULL;
284                    }
285                    if (pMIDIKeyInfo[i].pEvents) {
286                        delete pMIDIKeyInfo[i].pEvents;
287                        pMIDIKeyInfo[i].pEvents = NULL;
288                    }
289                }
290                for (uint i = 0; i < Event::destination_count; i++) {
291                    if (pSynthesisEvents[i]) {
292                        delete pSynthesisEvents[i];
293                        pSynthesisEvents[i] = NULL;
294                    }
295              }              }
296              Engine* oldEngine = pEngine;              Engine* oldEngine = pEngine;
297              AudioOutputDevice* oldAudioDevice = pEngine->pAudioOutputDevice;              AudioOutputDevice* oldAudioDevice = pEngine->pAudioOutputDevice;
298              pEngine = NULL;              pEngine = NULL;
299              Engine::FreeEngine(this, oldAudioDevice);              Engine::FreeEngine(this, oldAudioDevice);
300              AudioDeviceChannelLeft  = -1;              AudioDeviceChannelLeft  = -1;
301              AudioDeviceChannelRight = -1;                          AudioDeviceChannelRight = -1;
302          }          }
303      }      }
304    
305      void EngineChannel::SetOutputChannel(uint EngineAudioChannel, uint AudioDeviceChannel) {      void EngineChannel::SetOutputChannel(uint EngineAudioChannel, uint AudioDeviceChannel) {
306          if (!pEngine || !pEngine->pAudioOutputDevice) throw AudioOutputException("No audio output device connected yet.");          if (!pEngine || !pEngine->pAudioOutputDevice) throw AudioOutputException("No audio output device connected yet.");
307            
308          AudioChannel* pChannel = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannel);          AudioChannel* pChannel = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannel);
309          if (!pChannel) throw AudioOutputException("Invalid audio output device channel " + ToString(AudioDeviceChannel));          if (!pChannel) throw AudioOutputException("Invalid audio output device channel " + ToString(AudioDeviceChannel));
310          switch (EngineAudioChannel) {          switch (EngineAudioChannel) {
# Line 289  namespace LinuxSampler { namespace gig { Line 345  namespace LinuxSampler { namespace gig {
345              event.Type                = Event::type_note_on;              event.Type                = Event::type_note_on;
346              event.Param.Note.Key      = Key;              event.Param.Note.Key      = Key;
347              event.Param.Note.Velocity = Velocity;              event.Param.Note.Velocity = Velocity;
348              event.pEngineChannel      = this;                          event.pEngineChannel      = this;
349              if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);              if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
350              else dmsg(1,("EngineChannel: Input event queue full!"));              else dmsg(1,("EngineChannel: Input event queue full!"));
351          }          }
# Line 321  namespace LinuxSampler { namespace gig { Line 377  namespace LinuxSampler { namespace gig {
377       *  @param Pitch - MIDI pitch value (-8192 ... +8191)       *  @param Pitch - MIDI pitch value (-8192 ... +8191)
378       */       */
379      void EngineChannel::SendPitchbend(int Pitch) {      void EngineChannel::SendPitchbend(int Pitch) {
380          if (pEngine) {                  if (pEngine) {
381              Event event             = pEngine->pEventGenerator->CreateEvent();              Event event             = pEngine->pEventGenerator->CreateEvent();
382              event.Type              = Event::type_pitchbend;              event.Type              = Event::type_pitchbend;
383              event.Param.Pitch.Pitch = Pitch;              event.Param.Pitch.Pitch = Pitch;
# Line 350  namespace LinuxSampler { namespace gig { Line 406  namespace LinuxSampler { namespace gig {
406          }          }
407      }      }
408    
409        void EngineChannel::ClearEventLists() {
410            pEvents->clear();
411            pCCEvents->clear();
412            for (uint i = 0; i < Event::destination_count; i++) {
413                pSynthesisEvents[i]->clear();
414            }
415            // empty MIDI key specific event lists
416            {
417                RTList<uint>::Iterator iuiKey = pActiveKeys->first();
418                RTList<uint>::Iterator end    = pActiveKeys->end();
419                for(; iuiKey != end; ++iuiKey) {
420                    pMIDIKeyInfo[*iuiKey].pEvents->clear(); // free all events on the key
421                }
422            }
423        }
424    
425        void EngineChannel::ResetControllers() {
426            // set all MIDI controller values to zero
427            memset(ControllerTable, 0x00, 128);
428        }
429    
430        /**
431         * Copy all events from the engine channel's input event queue buffer to
432         * the internal event list. This will be done at the beginning of each
433         * audio cycle (that is each RenderAudio() call) to distinguish all
434         * events which have to be processed in the current audio cycle. Each
435         * EngineChannel has it's own input event queue for the common channel
436         * specific events (like NoteOn, NoteOff and ControlChange events).
437         * Beside that, the engine also has a input event queue for global
438         * events (usually SysEx messages).
439         *
440         * @param Samples - number of sample points to be processed in the
441         *                  current audio cycle
442         */
443        void EngineChannel::ImportEvents(uint Samples) {
444            RingBuffer<Event>::NonVolatileReader eventQueueReader = pEventQueue->get_non_volatile_reader();
445            Event* pEvent;
446            while (true) {
447                // get next event from input event queue
448                if (!(pEvent = eventQueueReader.pop())) break;
449                // if younger event reached, ignore that and all subsequent ones for now
450                if (pEvent->FragmentPos() >= Samples) {
451                    eventQueueReader--;
452                    dmsg(2,("Younger Event, pos=%d ,Samples=%d!\n",pEvent->FragmentPos(),Samples));
453                    pEvent->ResetFragmentPos();
454                    break;
455                }
456                // copy event to internal event list
457                if (pEvents->poolIsEmpty()) {
458                    dmsg(1,("Event pool emtpy!\n"));
459                    break;
460                }
461                *pEvents->allocAppend() = *pEvent;
462            }
463            eventQueueReader.free(); // free all copied events from input queue
464        }
465    
466      float EngineChannel::Volume() {      float EngineChannel::Volume() {
467          return GlobalVolume;          return GlobalVolume;
468      }      }
469    
470      void EngineChannel::Volume(float f) {      void EngineChannel::Volume(float f) {
471          GlobalVolume = f;          GlobalVolume = f;
472            bStatusChanged = true; // status of engine channel has changed, so set notify flag
473      }      }
474    
475      uint EngineChannel::Channels() {      uint EngineChannel::Channels() {
# Line 376  namespace LinuxSampler { namespace gig { Line 490  namespace LinuxSampler { namespace gig {
490    
491      int EngineChannel::InstrumentStatus() {      int EngineChannel::InstrumentStatus() {
492          return InstrumentStat;          return InstrumentStat;
493      }          }
494    
495        String EngineChannel::EngineName() {
496            return LS_GIG_ENGINE_NAME;
497        }
498    
499  }} // namespace LinuxSampler::gig  }} // namespace LinuxSampler::gig
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