/[svn]/linuxsampler/trunk/src/engines/gig/EngineChannel.cpp
ViewVC logotype

Diff of /linuxsampler/trunk/src/engines/gig/EngineChannel.cpp

Parent Directory Parent Directory | Revision Log Revision Log | View Patch Patch

revision 412 by schoenebeck, Sat Feb 26 22:44:51 2005 UTC revision 846 by persson, Sun Mar 19 16:38:22 2006 UTC
# Line 3  Line 3 
3   *   LinuxSampler - modular, streaming capable sampler                     *   *   LinuxSampler - modular, streaming capable sampler                     *
4   *                                                                         *   *                                                                         *
5   *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *   *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *
6   *   Copyright (C) 2005 Christian Schoenebeck                              *   *   Copyright (C) 2005, 2006 Christian Schoenebeck                        *
7   *                                                                         *   *                                                                         *
8   *   This program is free software; you can redistribute it and/or modify  *   *   This program is free software; you can redistribute it and/or modify  *
9   *   it under the terms of the GNU General Public License as published by  *   *   it under the terms of the GNU General Public License as published by  *
# 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            SoloMode       = false;
52            PortamentoMode = false;
53            PortamentoTime = CONFIG_PORTAMENTO_TIME_DEFAULT;
54      }      }
55    
56      EngineChannel::~EngineChannel() {      EngineChannel::~EngineChannel() {
57            DisconnectAudioOutputDevice();
58          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;  
             }  
         }  
59          if (pEventQueue) delete pEventQueue;          if (pEventQueue) delete pEventQueue;
60          if (pActiveKeys) delete pActiveKeys;          if (pActiveKeys) delete pActiveKeys;
61          if (pMIDIKeyInfo) delete[] pMIDIKeyInfo;          if (pMIDIKeyInfo) delete[] pMIDIKeyInfo;
62      }      }
63    
64      /**      /**
65         * Implementation of virtual method from abstract EngineChannel interface.
66         * This method will periodically be polled (e.g. by the LSCP server) to
67         * check if some engine channel parameter has changed since the last
68         * StatusChanged() call.
69         *
70         * This method can also be used to mark the engine channel as changed
71         * from outside, e.g. by a MIDI input device. The optional argument
72         * \a nNewStatus can be used for this.
73         *
74         * TODO: This "poll method" is just a lazy solution and might be
75         *       replaced in future.
76         * @param bNewStatus - (optional, default: false) sets the new status flag
77         * @returns true if engine channel status has changed since last
78         *          StatusChanged() call
79         */
80        bool EngineChannel::StatusChanged(bool bNewStatus) {
81            bool b = bStatusChanged;
82            bStatusChanged = bNewStatus;
83            return b;
84        }
85    
86        void EngineChannel::Reset() {
87            if (pEngine) pEngine->DisableAndLock();
88            ResetInternal();
89            ResetControllers();
90            if (pEngine) {
91                pEngine->Enable();
92                pEngine->Reset();
93            }
94        }
95    
96        /**
97       * This method is not thread safe!       * This method is not thread safe!
98       */       */
99      void EngineChannel::ResetInternal() {      void EngineChannel::ResetInternal() {
         Pitch               = 0;  
         SustainPedal        = false;  
         GlobalVolume        = 1.0;  
100          CurrentKeyDimension = 0;          CurrentKeyDimension = 0;
101    
         // set all MIDI controller values to zero  
         memset(ControllerTable, 0x00, 128);  
   
         // reset voice stealing parameters  
         itLastStolenVoice = RTList<Voice>::Iterator();  
         iuiLastStolenKey  = RTList<uint>::Iterator();  
   
102          // reset key info          // reset key info
103          for (uint i = 0; i < 128; i++) {          for (uint i = 0; i < 128; i++) {
104              if (pMIDIKeyInfo[i].pActiveVoices)              if (pMIDIKeyInfo[i].pActiveVoices)
# Line 87  namespace LinuxSampler { namespace gig { Line 109  namespace LinuxSampler { namespace gig {
109              pMIDIKeyInfo[i].Active         = false;              pMIDIKeyInfo[i].Active         = false;
110              pMIDIKeyInfo[i].ReleaseTrigger = false;              pMIDIKeyInfo[i].ReleaseTrigger = false;
111              pMIDIKeyInfo[i].itSelf         = Pool<uint>::Iterator();              pMIDIKeyInfo[i].itSelf         = Pool<uint>::Iterator();
112                pMIDIKeyInfo[i].VoiceTheftsQueued = 0;
113          }          }
114            SoloKey       = -1;    // no solo key active yet
115            PortamentoPos = -1.0f; // no portamento active yet
116    
117          // reset all key groups          // reset all key groups
118          std::map<uint,uint*>::iterator iter = ActiveKeyGroups.begin();          std::map<uint,uint*>::iterator iter = ActiveKeyGroups.begin();
# Line 100  namespace LinuxSampler { namespace gig { Line 125  namespace LinuxSampler { namespace gig {
125          pEventQueue->init();          pEventQueue->init();
126    
127          if (pEngine) pEngine->ResetInternal();          if (pEngine) pEngine->ResetInternal();
128    
129            // status of engine channel has changed, so set notify flag
130            bStatusChanged = true;
131      }      }
132    
133      LinuxSampler::Engine* EngineChannel::GetEngine() {      LinuxSampler::Engine* EngineChannel::GetEngine() {
# Line 134  namespace LinuxSampler { namespace gig { Line 162  namespace LinuxSampler { namespace gig {
162      void EngineChannel::LoadInstrument() {      void EngineChannel::LoadInstrument() {
163    
164          if (pEngine) pEngine->DisableAndLock();          if (pEngine) pEngine->DisableAndLock();
165            
166          ResetInternal();          ResetInternal();
167            
168          // free old instrument          // free old instrument
169          if (pInstrument) {          if (pInstrument) {
170              // give old instrument back to instrument manager              // give old instrument back to instrument manager
# Line 195  namespace LinuxSampler { namespace gig { Line 223  namespace LinuxSampler { namespace gig {
223    
224      /**      /**
225       * Will be called by the InstrumentResourceManager when the instrument       * Will be called by the InstrumentResourceManager when the instrument
226       * 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,
227       * can stop playback before that happens.       * so we can stop playback before that happens.
228       */       */
229      void EngineChannel::ResourceToBeUpdated(::gig::Instrument* pResource, void*& pUpdateArg) {      void EngineChannel::ResourceToBeUpdated(::gig::Instrument* pResource, void*& pUpdateArg) {
230          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 240  namespace LinuxSampler { namespace gig {
240      void EngineChannel::ResourceUpdated(::gig::Instrument* pOldResource, ::gig::Instrument* pNewResource, void* pUpdateArg) {      void EngineChannel::ResourceUpdated(::gig::Instrument* pOldResource, ::gig::Instrument* pNewResource, void* pUpdateArg) {
241          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())
242          if (pEngine) pEngine->Enable();          if (pEngine) pEngine->Enable();
243            bStatusChanged = true; // status of engine has changed, so set notify flag
244        }
245    
246        /**
247         * Will be called by the InstrumentResourceManager on progress changes
248         * while loading or realoading an instrument for this EngineChannel.
249         *
250         * @param fProgress - current progress as value between 0.0 and 1.0
251         */
252        void EngineChannel::OnResourceProgress(float fProgress) {
253            this->InstrumentStat = int(fProgress * 100.0f);
254            dmsg(7,("gig::EngineChannel: progress %d%", InstrumentStat));
255            bStatusChanged = true; // status of engine has changed, so set notify flag
256      }      }
257    
258      void EngineChannel::Connect(AudioOutputDevice* pAudioOut) {      void EngineChannel::Connect(AudioOutputDevice* pAudioOut) {
259          if (pEngine && pEngine->pAudioOutputDevice != pAudioOut) {          if (pEngine) {
260                if (pEngine->pAudioOutputDevice == pAudioOut) return;
261              DisconnectAudioOutputDevice();              DisconnectAudioOutputDevice();
262          }          }
263          pEngine = Engine::AcquireEngine(this, pAudioOut);          pEngine = Engine::AcquireEngine(this, pAudioOut);
264          ResetInternal();                  ResetInternal();
265            pEvents = new RTList<Event>(pEngine->pEventPool);
266          for (uint i = 0; i < 128; i++) {          for (uint i = 0; i < 128; i++) {
267              pMIDIKeyInfo[i].pActiveVoices = new RTList<Voice>(pEngine->pVoicePool);              pMIDIKeyInfo[i].pActiveVoices = new RTList<Voice>(pEngine->pVoicePool);
268              pMIDIKeyInfo[i].pEvents       = new RTList<Event>(pEngine->pEventPool);              pMIDIKeyInfo[i].pEvents       = new RTList<Event>(pEngine->pEventPool);
# Line 228  namespace LinuxSampler { namespace gig { Line 271  namespace LinuxSampler { namespace gig {
271          AudioDeviceChannelRight = 1;          AudioDeviceChannelRight = 1;
272          pOutputLeft             = pAudioOut->Channel(0)->Buffer();          pOutputLeft             = pAudioOut->Channel(0)->Buffer();
273          pOutputRight            = pAudioOut->Channel(1)->Buffer();          pOutputRight            = pAudioOut->Channel(1)->Buffer();
274            MidiInputPort::AddSysexListener(pEngine);
275      }      }
276    
277      void EngineChannel::DisconnectAudioOutputDevice() {      void EngineChannel::DisconnectAudioOutputDevice() {
278          if (pEngine) { // if clause to prevent disconnect loops          if (pEngine) { // if clause to prevent disconnect loops
279              ResetInternal();              ResetInternal();
280                if (pEvents) {
281                    delete pEvents;
282                    pEvents = NULL;
283                }
284              for (uint i = 0; i < 128; i++) {              for (uint i = 0; i < 128; i++) {
285                  if (pMIDIKeyInfo[i].pActiveVoices) delete pMIDIKeyInfo[i].pActiveVoices;                  if (pMIDIKeyInfo[i].pActiveVoices) {
286                  if (pMIDIKeyInfo[i].pEvents)       delete pMIDIKeyInfo[i].pEvents;                      delete pMIDIKeyInfo[i].pActiveVoices;
287                        pMIDIKeyInfo[i].pActiveVoices = NULL;
288                    }
289                    if (pMIDIKeyInfo[i].pEvents) {
290                        delete pMIDIKeyInfo[i].pEvents;
291                        pMIDIKeyInfo[i].pEvents = NULL;
292                    }
293              }              }
294              Engine* oldEngine = pEngine;              Engine* oldEngine = pEngine;
295              AudioOutputDevice* oldAudioDevice = pEngine->pAudioOutputDevice;              AudioOutputDevice* oldAudioDevice = pEngine->pAudioOutputDevice;
296              pEngine = NULL;              pEngine = NULL;
297              Engine::FreeEngine(this, oldAudioDevice);              Engine::FreeEngine(this, oldAudioDevice);
298              AudioDeviceChannelLeft  = -1;              AudioDeviceChannelLeft  = -1;
299              AudioDeviceChannelRight = -1;                          AudioDeviceChannelRight = -1;
300          }          }
301      }      }
302    
303      void EngineChannel::SetOutputChannel(uint EngineAudioChannel, uint AudioDeviceChannel) {      void EngineChannel::SetOutputChannel(uint EngineAudioChannel, uint AudioDeviceChannel) {
304          if (!pEngine || !pEngine->pAudioOutputDevice) throw AudioOutputException("No audio output device connected yet.");          if (!pEngine || !pEngine->pAudioOutputDevice) throw AudioOutputException("No audio output device connected yet.");
305            
306          AudioChannel* pChannel = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannel);          AudioChannel* pChannel = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannel);
307          if (!pChannel) throw AudioOutputException("Invalid audio output device channel " + ToString(AudioDeviceChannel));          if (!pChannel) throw AudioOutputException("Invalid audio output device channel " + ToString(AudioDeviceChannel));
308          switch (EngineAudioChannel) {          switch (EngineAudioChannel) {
# Line 276  namespace LinuxSampler { namespace gig { Line 330  namespace LinuxSampler { namespace gig {
330          }          }
331      }      }
332    
333        void EngineChannel::Connect(MidiInputPort* pMidiPort, midi_chan_t MidiChannel) {
334            if (!pMidiPort || pMidiPort == this->pMidiInputPort) return;
335            DisconnectMidiInputPort();
336            this->pMidiInputPort = pMidiPort;
337            this->midiChannel    = MidiChannel;
338            pMidiPort->Connect(this, MidiChannel);
339        }
340    
341        void EngineChannel::DisconnectMidiInputPort() {
342            MidiInputPort* pOldPort = this->pMidiInputPort;
343            this->pMidiInputPort = NULL;
344            if (pOldPort) pOldPort->Disconnect(this);
345        }
346    
347        MidiInputPort* EngineChannel::GetMidiInputPort() {
348            return pMidiInputPort;
349        }
350    
351        midi_chan_t EngineChannel::MidiChannel() {
352            return midiChannel;
353        }
354    
355      /**      /**
356       *  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
357       *  voice for the given key.       *  voice for the given key.
# Line 289  namespace LinuxSampler { namespace gig { Line 365  namespace LinuxSampler { namespace gig {
365              event.Type                = Event::type_note_on;              event.Type                = Event::type_note_on;
366              event.Param.Note.Key      = Key;              event.Param.Note.Key      = Key;
367              event.Param.Note.Velocity = Velocity;              event.Param.Note.Velocity = Velocity;
368              event.pEngineChannel      = this;                          event.pEngineChannel      = this;
369              if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);              if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
370              else dmsg(1,("EngineChannel: Input event queue full!"));              else dmsg(1,("EngineChannel: Input event queue full!"));
371          }          }
# Line 321  namespace LinuxSampler { namespace gig { Line 397  namespace LinuxSampler { namespace gig {
397       *  @param Pitch - MIDI pitch value (-8192 ... +8191)       *  @param Pitch - MIDI pitch value (-8192 ... +8191)
398       */       */
399      void EngineChannel::SendPitchbend(int Pitch) {      void EngineChannel::SendPitchbend(int Pitch) {
400          if (pEngine) {                  if (pEngine) {
401              Event event             = pEngine->pEventGenerator->CreateEvent();              Event event             = pEngine->pEventGenerator->CreateEvent();
402              event.Type              = Event::type_pitchbend;              event.Type              = Event::type_pitchbend;
403              event.Param.Pitch.Pitch = Pitch;              event.Param.Pitch.Pitch = Pitch;
# Line 350  namespace LinuxSampler { namespace gig { Line 426  namespace LinuxSampler { namespace gig {
426          }          }
427      }      }
428    
429        void EngineChannel::ClearEventLists() {
430            pEvents->clear();
431            // empty MIDI key specific event lists
432            {
433                RTList<uint>::Iterator iuiKey = pActiveKeys->first();
434                RTList<uint>::Iterator end    = pActiveKeys->end();
435                for(; iuiKey != end; ++iuiKey) {
436                    pMIDIKeyInfo[*iuiKey].pEvents->clear(); // free all events on the key
437                }
438            }
439        }
440    
441        void EngineChannel::ResetControllers() {
442            Pitch          = 0;
443            SustainPedal   = false;
444            SostenutoPedal = false;
445            GlobalVolume   = CONFIG_GLOBAL_ATTENUATION;
446            GlobalPanLeft  = 1.0f;
447            GlobalPanRight = 1.0f;
448            // set all MIDI controller values to zero
449            memset(ControllerTable, 0x00, 128);
450        }
451    
452        /**
453         * Copy all events from the engine channel's input event queue buffer to
454         * the internal event list. This will be done at the beginning of each
455         * audio cycle (that is each RenderAudio() call) to distinguish all
456         * events which have to be processed in the current audio cycle. Each
457         * EngineChannel has it's own input event queue for the common channel
458         * specific events (like NoteOn, NoteOff and ControlChange events).
459         * Beside that, the engine also has a input event queue for global
460         * events (usually SysEx messages).
461         *
462         * @param Samples - number of sample points to be processed in the
463         *                  current audio cycle
464         */
465        void EngineChannel::ImportEvents(uint Samples) {
466            RingBuffer<Event>::NonVolatileReader eventQueueReader = pEventQueue->get_non_volatile_reader();
467            Event* pEvent;
468            while (true) {
469                // get next event from input event queue
470                if (!(pEvent = eventQueueReader.pop())) break;
471                // if younger event reached, ignore that and all subsequent ones for now
472                if (pEvent->FragmentPos() >= Samples) {
473                    eventQueueReader--;
474                    dmsg(2,("Younger Event, pos=%d ,Samples=%d!\n",pEvent->FragmentPos(),Samples));
475                    pEvent->ResetFragmentPos();
476                    break;
477                }
478                // copy event to internal event list
479                if (pEvents->poolIsEmpty()) {
480                    dmsg(1,("Event pool emtpy!\n"));
481                    break;
482                }
483                *pEvents->allocAppend() = *pEvent;
484            }
485            eventQueueReader.free(); // free all copied events from input queue
486        }
487    
488      float EngineChannel::Volume() {      float EngineChannel::Volume() {
489          return GlobalVolume;          return GlobalVolume;
490      }      }
491    
492      void EngineChannel::Volume(float f) {      void EngineChannel::Volume(float f) {
493          GlobalVolume = f;          GlobalVolume = f;
494            bStatusChanged = true; // status of engine channel has changed, so set notify flag
495      }      }
496    
497      uint EngineChannel::Channels() {      uint EngineChannel::Channels() {
# Line 376  namespace LinuxSampler { namespace gig { Line 512  namespace LinuxSampler { namespace gig {
512    
513      int EngineChannel::InstrumentStatus() {      int EngineChannel::InstrumentStatus() {
514          return InstrumentStat;          return InstrumentStat;
515      }          }
516    
517        String EngineChannel::EngineName() {
518            return LS_GIG_ENGINE_NAME;
519        }
520    
521  }} // namespace LinuxSampler::gig  }} // namespace LinuxSampler::gig
Legend:
Removed from v.412  
changed lines
  Added in v.846
  ViewVC Help
Powered by ViewVC