/[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 738 by schoenebeck, Tue Aug 16 17:14:25 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            pEventQueue  = new RingBuffer<Event>(CONFIG_MAX_EVENTS_PER_FRAGMENT, 0);
34          pActiveKeys  = new Pool<uint>(128);          pActiveKeys  = new Pool<uint>(128);
35          for (uint i = 0; i < 128; i++) {          for (uint i = 0; i < 128; i++) {
36              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 38  namespace LinuxSampler { namespace gig {
38              pMIDIKeyInfo[i].Active         = false;              pMIDIKeyInfo[i].Active         = false;
39              pMIDIKeyInfo[i].ReleaseTrigger = false;              pMIDIKeyInfo[i].ReleaseTrigger = false;
40              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
41                pMIDIKeyInfo[i].VoiceTheftsQueued = 0;
42                pMIDIKeyInfo[i].RoundRobinIndex = 0;
43          }          }
44          InstrumentIdx  = -1;          InstrumentIdx  = -1;
45          InstrumentStat = -1;          InstrumentStat = -1;
46          AudioDeviceChannelLeft  = -1;          AudioDeviceChannelLeft  = -1;
47          AudioDeviceChannelRight = -1;          AudioDeviceChannelRight = -1;
48            pMidiInputPort = NULL;
49            midiChannel = midi_chan_all;
50            ResetControllers();
51      }      }
52    
53      EngineChannel::~EngineChannel() {      EngineChannel::~EngineChannel() {
54            DisconnectAudioOutputDevice();
55          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;  
             }  
         }  
56          if (pEventQueue) delete pEventQueue;          if (pEventQueue) delete pEventQueue;
57          if (pActiveKeys) delete pActiveKeys;          if (pActiveKeys) delete pActiveKeys;
58          if (pMIDIKeyInfo) delete[] pMIDIKeyInfo;          if (pMIDIKeyInfo) delete[] pMIDIKeyInfo;
59      }      }
60    
61      /**      /**
62         * Implementation of virtual method from abstract EngineChannel interface.
63         * This method will periodically be polled (e.g. by the LSCP server) to
64         * check if some engine channel parameter has changed since the last
65         * StatusChanged() call.
66         *
67         * This method can also be used to mark the engine channel as changed
68         * from outside, e.g. by a MIDI input device. The optional argument
69         * \a nNewStatus can be used for this.
70         *
71         * TODO: This "poll method" is just a lazy solution and might be
72         *       replaced in future.
73         * @param bNewStatus - (optional, default: false) sets the new status flag
74         * @returns true if engine channel status has changed since last
75         *          StatusChanged() call
76         */
77        bool EngineChannel::StatusChanged(bool bNewStatus) {
78            bool b = bStatusChanged;
79            bStatusChanged = bNewStatus;
80            return b;
81        }
82    
83        void EngineChannel::Reset() {
84            if (pEngine) pEngine->DisableAndLock();
85            ResetInternal();
86            ResetControllers();
87            if (pEngine) {
88                pEngine->Enable();
89                pEngine->Reset();
90            }
91        }
92    
93        /**
94       * This method is not thread safe!       * This method is not thread safe!
95       */       */
96      void EngineChannel::ResetInternal() {      void EngineChannel::ResetInternal() {
         Pitch               = 0;  
         SustainPedal        = false;  
         GlobalVolume        = 1.0;  
97          CurrentKeyDimension = 0;          CurrentKeyDimension = 0;
98    
         // set all MIDI controller values to zero  
         memset(ControllerTable, 0x00, 128);  
   
         // reset voice stealing parameters  
         itLastStolenVoice = RTList<Voice>::Iterator();  
         iuiLastStolenKey  = RTList<uint>::Iterator();  
   
99          // reset key info          // reset key info
100          for (uint i = 0; i < 128; i++) {          for (uint i = 0; i < 128; i++) {
101              if (pMIDIKeyInfo[i].pActiveVoices)              if (pMIDIKeyInfo[i].pActiveVoices)
# Line 87  namespace LinuxSampler { namespace gig { Line 106  namespace LinuxSampler { namespace gig {
106              pMIDIKeyInfo[i].Active         = false;              pMIDIKeyInfo[i].Active         = false;
107              pMIDIKeyInfo[i].ReleaseTrigger = false;              pMIDIKeyInfo[i].ReleaseTrigger = false;
108              pMIDIKeyInfo[i].itSelf         = Pool<uint>::Iterator();              pMIDIKeyInfo[i].itSelf         = Pool<uint>::Iterator();
109                pMIDIKeyInfo[i].VoiceTheftsQueued = 0;
110          }          }
111    
112          // reset all key groups          // reset all key groups
# Line 100  namespace LinuxSampler { namespace gig { Line 120  namespace LinuxSampler { namespace gig {
120          pEventQueue->init();          pEventQueue->init();
121    
122          if (pEngine) pEngine->ResetInternal();          if (pEngine) pEngine->ResetInternal();
123    
124            // status of engine channel has changed, so set notify flag
125            bStatusChanged = true;
126      }      }
127    
128      LinuxSampler::Engine* EngineChannel::GetEngine() {      LinuxSampler::Engine* EngineChannel::GetEngine() {
# Line 134  namespace LinuxSampler { namespace gig { Line 157  namespace LinuxSampler { namespace gig {
157      void EngineChannel::LoadInstrument() {      void EngineChannel::LoadInstrument() {
158    
159          if (pEngine) pEngine->DisableAndLock();          if (pEngine) pEngine->DisableAndLock();
160            
161          ResetInternal();          ResetInternal();
162            
163          // free old instrument          // free old instrument
164          if (pInstrument) {          if (pInstrument) {
165              // give old instrument back to instrument manager              // give old instrument back to instrument manager
# Line 195  namespace LinuxSampler { namespace gig { Line 218  namespace LinuxSampler { namespace gig {
218    
219      /**      /**
220       * Will be called by the InstrumentResourceManager when the instrument       * Will be called by the InstrumentResourceManager when the instrument
221       * 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,
222       * can stop playback before that happens.       * so we can stop playback before that happens.
223       */       */
224      void EngineChannel::ResourceToBeUpdated(::gig::Instrument* pResource, void*& pUpdateArg) {      void EngineChannel::ResourceToBeUpdated(::gig::Instrument* pResource, void*& pUpdateArg) {
225          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 235  namespace LinuxSampler { namespace gig {
235      void EngineChannel::ResourceUpdated(::gig::Instrument* pOldResource, ::gig::Instrument* pNewResource, void* pUpdateArg) {      void EngineChannel::ResourceUpdated(::gig::Instrument* pOldResource, ::gig::Instrument* pNewResource, void* pUpdateArg) {
236          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())
237          if (pEngine) pEngine->Enable();          if (pEngine) pEngine->Enable();
238            bStatusChanged = true; // status of engine has changed, so set notify flag
239        }
240    
241        /**
242         * Will be called by the InstrumentResourceManager on progress changes
243         * while loading or realoading an instrument for this EngineChannel.
244         *
245         * @param fProgress - current progress as value between 0.0 and 1.0
246         */
247        void EngineChannel::OnResourceProgress(float fProgress) {
248            this->InstrumentStat = int(fProgress * 100.0f);
249            dmsg(7,("gig::EngineChannel: progress %d%", InstrumentStat));
250            bStatusChanged = true; // status of engine has changed, so set notify flag
251      }      }
252    
253      void EngineChannel::Connect(AudioOutputDevice* pAudioOut) {      void EngineChannel::Connect(AudioOutputDevice* pAudioOut) {
254          if (pEngine && pEngine->pAudioOutputDevice != pAudioOut) {          if (pEngine) {
255                if (pEngine->pAudioOutputDevice == pAudioOut) return;
256              DisconnectAudioOutputDevice();              DisconnectAudioOutputDevice();
257          }          }
258          pEngine = Engine::AcquireEngine(this, pAudioOut);          pEngine = Engine::AcquireEngine(this, pAudioOut);
259          ResetInternal();                  ResetInternal();
260            pEvents = new RTList<Event>(pEngine->pEventPool);
261          for (uint i = 0; i < 128; i++) {          for (uint i = 0; i < 128; i++) {
262              pMIDIKeyInfo[i].pActiveVoices = new RTList<Voice>(pEngine->pVoicePool);              pMIDIKeyInfo[i].pActiveVoices = new RTList<Voice>(pEngine->pVoicePool);
263              pMIDIKeyInfo[i].pEvents       = new RTList<Event>(pEngine->pEventPool);              pMIDIKeyInfo[i].pEvents       = new RTList<Event>(pEngine->pEventPool);
# Line 233  namespace LinuxSampler { namespace gig { Line 271  namespace LinuxSampler { namespace gig {
271      void EngineChannel::DisconnectAudioOutputDevice() {      void EngineChannel::DisconnectAudioOutputDevice() {
272          if (pEngine) { // if clause to prevent disconnect loops          if (pEngine) { // if clause to prevent disconnect loops
273              ResetInternal();              ResetInternal();
274                if (pEvents) {
275                    delete pEvents;
276                    pEvents = NULL;
277                }
278              for (uint i = 0; i < 128; i++) {              for (uint i = 0; i < 128; i++) {
279                  if (pMIDIKeyInfo[i].pActiveVoices) delete pMIDIKeyInfo[i].pActiveVoices;                  if (pMIDIKeyInfo[i].pActiveVoices) {
280                  if (pMIDIKeyInfo[i].pEvents)       delete pMIDIKeyInfo[i].pEvents;                      delete pMIDIKeyInfo[i].pActiveVoices;
281                        pMIDIKeyInfo[i].pActiveVoices = NULL;
282                    }
283                    if (pMIDIKeyInfo[i].pEvents) {
284                        delete pMIDIKeyInfo[i].pEvents;
285                        pMIDIKeyInfo[i].pEvents = NULL;
286                    }
287              }              }
288              Engine* oldEngine = pEngine;              Engine* oldEngine = pEngine;
289              AudioOutputDevice* oldAudioDevice = pEngine->pAudioOutputDevice;              AudioOutputDevice* oldAudioDevice = pEngine->pAudioOutputDevice;
290              pEngine = NULL;              pEngine = NULL;
291              Engine::FreeEngine(this, oldAudioDevice);              Engine::FreeEngine(this, oldAudioDevice);
292              AudioDeviceChannelLeft  = -1;              AudioDeviceChannelLeft  = -1;
293              AudioDeviceChannelRight = -1;                          AudioDeviceChannelRight = -1;
294          }          }
295      }      }
296    
297      void EngineChannel::SetOutputChannel(uint EngineAudioChannel, uint AudioDeviceChannel) {      void EngineChannel::SetOutputChannel(uint EngineAudioChannel, uint AudioDeviceChannel) {
298          if (!pEngine || !pEngine->pAudioOutputDevice) throw AudioOutputException("No audio output device connected yet.");          if (!pEngine || !pEngine->pAudioOutputDevice) throw AudioOutputException("No audio output device connected yet.");
299            
300          AudioChannel* pChannel = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannel);          AudioChannel* pChannel = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannel);
301          if (!pChannel) throw AudioOutputException("Invalid audio output device channel " + ToString(AudioDeviceChannel));          if (!pChannel) throw AudioOutputException("Invalid audio output device channel " + ToString(AudioDeviceChannel));
302          switch (EngineAudioChannel) {          switch (EngineAudioChannel) {
# Line 276  namespace LinuxSampler { namespace gig { Line 324  namespace LinuxSampler { namespace gig {
324          }          }
325      }      }
326    
327        void EngineChannel::Connect(MidiInputPort* pMidiPort, midi_chan_t MidiChannel) {
328            if (!pMidiPort || pMidiPort == this->pMidiInputPort) return;
329            DisconnectMidiInputPort();
330            this->pMidiInputPort = pMidiPort;
331            this->midiChannel    = MidiChannel;
332            pMidiPort->Connect(this, MidiChannel);
333        }
334    
335        void EngineChannel::DisconnectMidiInputPort() {
336            MidiInputPort* pOldPort = this->pMidiInputPort;
337            this->pMidiInputPort = NULL;
338            if (pOldPort) pOldPort->Disconnect(this);
339        }
340    
341        MidiInputPort* EngineChannel::GetMidiInputPort() {
342            return pMidiInputPort;
343        }
344    
345        midi_chan_t EngineChannel::MidiChannel() {
346            return midiChannel;
347        }
348    
349      /**      /**
350       *  Will be called by the MIDIIn Thread to let the audio thread trigger a new       *  Will be called by the MIDIIn Thread to let the audio thread trigger a new
351       *  voice for the given key.       *  voice for the given key.
# Line 289  namespace LinuxSampler { namespace gig { Line 359  namespace LinuxSampler { namespace gig {
359              event.Type                = Event::type_note_on;              event.Type                = Event::type_note_on;
360              event.Param.Note.Key      = Key;              event.Param.Note.Key      = Key;
361              event.Param.Note.Velocity = Velocity;              event.Param.Note.Velocity = Velocity;
362              event.pEngineChannel      = this;                          event.pEngineChannel      = this;
363              if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);              if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
364              else dmsg(1,("EngineChannel: Input event queue full!"));              else dmsg(1,("EngineChannel: Input event queue full!"));
365          }          }
# Line 321  namespace LinuxSampler { namespace gig { Line 391  namespace LinuxSampler { namespace gig {
391       *  @param Pitch - MIDI pitch value (-8192 ... +8191)       *  @param Pitch - MIDI pitch value (-8192 ... +8191)
392       */       */
393      void EngineChannel::SendPitchbend(int Pitch) {      void EngineChannel::SendPitchbend(int Pitch) {
394          if (pEngine) {                  if (pEngine) {
395              Event event             = pEngine->pEventGenerator->CreateEvent();              Event event             = pEngine->pEventGenerator->CreateEvent();
396              event.Type              = Event::type_pitchbend;              event.Type              = Event::type_pitchbend;
397              event.Param.Pitch.Pitch = Pitch;              event.Param.Pitch.Pitch = Pitch;
# Line 350  namespace LinuxSampler { namespace gig { Line 420  namespace LinuxSampler { namespace gig {
420          }          }
421      }      }
422    
423        void EngineChannel::ClearEventLists() {
424            pEvents->clear();
425            // empty MIDI key specific event lists
426            {
427                RTList<uint>::Iterator iuiKey = pActiveKeys->first();
428                RTList<uint>::Iterator end    = pActiveKeys->end();
429                for(; iuiKey != end; ++iuiKey) {
430                    pMIDIKeyInfo[*iuiKey].pEvents->clear(); // free all events on the key
431                }
432            }
433        }
434    
435        void EngineChannel::ResetControllers() {
436            Pitch          = 0;
437            SustainPedal   = false;
438            GlobalVolume   = 1.0;
439            GlobalPanLeft  = 1.0f;
440            GlobalPanRight = 1.0f;
441            // set all MIDI controller values to zero
442            memset(ControllerTable, 0x00, 128);
443        }
444    
445        /**
446         * Copy all events from the engine channel's input event queue buffer to
447         * the internal event list. This will be done at the beginning of each
448         * audio cycle (that is each RenderAudio() call) to distinguish all
449         * events which have to be processed in the current audio cycle. Each
450         * EngineChannel has it's own input event queue for the common channel
451         * specific events (like NoteOn, NoteOff and ControlChange events).
452         * Beside that, the engine also has a input event queue for global
453         * events (usually SysEx messages).
454         *
455         * @param Samples - number of sample points to be processed in the
456         *                  current audio cycle
457         */
458        void EngineChannel::ImportEvents(uint Samples) {
459            RingBuffer<Event>::NonVolatileReader eventQueueReader = pEventQueue->get_non_volatile_reader();
460            Event* pEvent;
461            while (true) {
462                // get next event from input event queue
463                if (!(pEvent = eventQueueReader.pop())) break;
464                // if younger event reached, ignore that and all subsequent ones for now
465                if (pEvent->FragmentPos() >= Samples) {
466                    eventQueueReader--;
467                    dmsg(2,("Younger Event, pos=%d ,Samples=%d!\n",pEvent->FragmentPos(),Samples));
468                    pEvent->ResetFragmentPos();
469                    break;
470                }
471                // copy event to internal event list
472                if (pEvents->poolIsEmpty()) {
473                    dmsg(1,("Event pool emtpy!\n"));
474                    break;
475                }
476                *pEvents->allocAppend() = *pEvent;
477            }
478            eventQueueReader.free(); // free all copied events from input queue
479        }
480    
481      float EngineChannel::Volume() {      float EngineChannel::Volume() {
482          return GlobalVolume;          return GlobalVolume;
483      }      }
484    
485      void EngineChannel::Volume(float f) {      void EngineChannel::Volume(float f) {
486          GlobalVolume = f;          GlobalVolume = f;
487            bStatusChanged = true; // status of engine channel has changed, so set notify flag
488      }      }
489    
490      uint EngineChannel::Channels() {      uint EngineChannel::Channels() {
# Line 376  namespace LinuxSampler { namespace gig { Line 505  namespace LinuxSampler { namespace gig {
505    
506      int EngineChannel::InstrumentStatus() {      int EngineChannel::InstrumentStatus() {
507          return InstrumentStat;          return InstrumentStat;
508      }          }
509    
510        String EngineChannel::EngineName() {
511            return LS_GIG_ENGINE_NAME;
512        }
513    
514  }} // namespace LinuxSampler::gig  }} // namespace LinuxSampler::gig
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