/[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 947 by schoenebeck, Mon Nov 27 21:34:55 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 148  namespace LinuxSampler { namespace gig { Line 176  namespace LinuxSampler { namespace gig {
176    
177          // request gig instrument from instrument manager          // request gig instrument from instrument manager
178          try {          try {
179              instrument_id_t instrid;              InstrumentManager::instrument_id_t instrid;
180              instrid.FileName    = InstrumentFile;              instrid.FileName  = InstrumentFile;
181              instrid.iInstrument = InstrumentIdx;              instrid.Index     = InstrumentIdx;
182              pInstrument = Engine::instruments.Borrow(instrid, this);              pInstrument = Engine::instruments.Borrow(instrid, this);
183              if (!pInstrument) {              if (!pInstrument) {
184                  InstrumentStat = -1;                  InstrumentStat = -1;
# Line 161  namespace LinuxSampler { namespace gig { Line 189  namespace LinuxSampler { namespace gig {
189          catch (RIFF::Exception e) {          catch (RIFF::Exception e) {
190              InstrumentStat = -2;              InstrumentStat = -2;
191              String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message;              String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message;
192              throw LinuxSamplerException(msg);              throw Exception(msg);
193          }          }
194          catch (InstrumentResourceManagerException e) {          catch (InstrumentResourceManagerException e) {
195              InstrumentStat = -3;              InstrumentStat = -3;
196              String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message();              String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message();
197              throw LinuxSamplerException(msg);              throw Exception(msg);
198          }          }
199          catch (...) {          catch (...) {
200              InstrumentStat = -4;              InstrumentStat = -4;
201              throw LinuxSamplerException("gig::Engine error: Failed to load instrument, cause: Unknown exception while trying to parse gig file.");              throw Exception("gig::Engine error: Failed to load instrument, cause: Unknown exception while trying to parse gig file.");
202          }          }
203    
204          // rebuild ActiveKeyGroups map with key groups of current instrument          // rebuild ActiveKeyGroups map with key groups of current instrument
# Line 187  namespace LinuxSampler { namespace gig { Line 215  namespace LinuxSampler { namespace gig {
215          }          }
216          catch (AudioOutputException e) {          catch (AudioOutputException e) {
217              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();
218              throw LinuxSamplerException(msg);              throw Exception(msg);
219          }          }
220    
221          if (pEngine) pEngine->Enable();          if (pEngine) pEngine->Enable();
# 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. This method is meant for real time rendering,
358         *  that is an event will immediately be created with the current system
359         *  time as time stamp.
360       *       *
361       *  @param Key      - MIDI key number of the triggered key       *  @param Key      - MIDI key number of the triggered key
362       *  @param Velocity - MIDI velocity value of the triggered key       *  @param Velocity - MIDI velocity value of the triggered key
# Line 289  namespace LinuxSampler { namespace gig { Line 367  namespace LinuxSampler { namespace gig {
367              event.Type                = Event::type_note_on;              event.Type                = Event::type_note_on;
368              event.Param.Note.Key      = Key;              event.Param.Note.Key      = Key;
369              event.Param.Note.Velocity = Velocity;              event.Param.Note.Velocity = Velocity;
370              event.pEngineChannel      = this;                          event.pEngineChannel      = this;
371                if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
372                else dmsg(1,("EngineChannel: Input event queue full!"));
373            }
374        }
375    
376        /**
377         *  Will be called by the MIDIIn Thread to let the audio thread trigger a new
378         *  voice for the given key. This method is meant for offline rendering
379         *  and / or for cases where the exact position of the event in the current
380         *  audio fragment is already known.
381         *
382         *  @param Key         - MIDI key number of the triggered key
383         *  @param Velocity    - MIDI velocity value of the triggered key
384         *  @param FragmentPos - sample point position in the current audio
385         *                       fragment to which this event belongs to
386         */
387        void EngineChannel::SendNoteOn(uint8_t Key, uint8_t Velocity, int32_t FragmentPos) {
388            if (FragmentPos < 0) {
389                dmsg(1,("EngineChannel::SendNoteOn(): negative FragmentPos! Seems MIDI driver is buggy!"));
390            }
391            else if (pEngine) {
392                Event event               = pEngine->pEventGenerator->CreateEvent(FragmentPos);
393                event.Type                = Event::type_note_on;
394                event.Param.Note.Key      = Key;
395                event.Param.Note.Velocity = Velocity;
396                event.pEngineChannel      = this;
397              if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);              if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
398              else dmsg(1,("EngineChannel: Input event queue full!"));              else dmsg(1,("EngineChannel: Input event queue full!"));
399          }          }
# Line 297  namespace LinuxSampler { namespace gig { Line 401  namespace LinuxSampler { namespace gig {
401    
402      /**      /**
403       *  Will be called by the MIDIIn Thread to signal the audio thread to release       *  Will be called by the MIDIIn Thread to signal the audio thread to release
404       *  voice(s) on the given key.       *  voice(s) on the given key. This method is meant for real time rendering,
405         *  that is an event will immediately be created with the current system
406         *  time as time stamp.
407       *       *
408       *  @param Key      - MIDI key number of the released key       *  @param Key      - MIDI key number of the released key
409       *  @param Velocity - MIDI release velocity value of the released key       *  @param Velocity - MIDI release velocity value of the released key
# Line 315  namespace LinuxSampler { namespace gig { Line 421  namespace LinuxSampler { namespace gig {
421      }      }
422    
423      /**      /**
424         *  Will be called by the MIDIIn Thread to signal the audio thread to release
425         *  voice(s) on the given key. This method is meant for offline rendering
426         *  and / or for cases where the exact position of the event in the current
427         *  audio fragment is already known.
428         *
429         *  @param Key         - MIDI key number of the released key
430         *  @param Velocity    - MIDI release velocity value of the released key
431         *  @param FragmentPos - sample point position in the current audio
432         *                       fragment to which this event belongs to
433         */
434        void EngineChannel::SendNoteOff(uint8_t Key, uint8_t Velocity, int32_t FragmentPos) {
435            if (FragmentPos < 0) {
436                dmsg(1,("EngineChannel::SendNoteOff(): negative FragmentPos! Seems MIDI driver is buggy!"));
437            }
438            else if (pEngine) {
439                Event event               = pEngine->pEventGenerator->CreateEvent(FragmentPos);
440                event.Type                = Event::type_note_off;
441                event.Param.Note.Key      = Key;
442                event.Param.Note.Velocity = Velocity;
443                event.pEngineChannel      = this;
444                if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
445                else dmsg(1,("EngineChannel: Input event queue full!"));
446            }
447        }
448    
449        /**
450       *  Will be called by the MIDIIn Thread to signal the audio thread to change       *  Will be called by the MIDIIn Thread to signal the audio thread to change
451       *  the pitch value for all voices.       *  the pitch value for all voices. This method is meant for real time
452         *  rendering, that is an event will immediately be created with the
453         *  current system time as time stamp.
454       *       *
455       *  @param Pitch - MIDI pitch value (-8192 ... +8191)       *  @param Pitch - MIDI pitch value (-8192 ... +8191)
456       */       */
457      void EngineChannel::SendPitchbend(int Pitch) {      void EngineChannel::SendPitchbend(int Pitch) {
458          if (pEngine) {                  if (pEngine) {
459              Event event             = pEngine->pEventGenerator->CreateEvent();              Event event             = pEngine->pEventGenerator->CreateEvent();
460              event.Type              = Event::type_pitchbend;              event.Type              = Event::type_pitchbend;
461              event.Param.Pitch.Pitch = Pitch;              event.Param.Pitch.Pitch = Pitch;
# Line 332  namespace LinuxSampler { namespace gig { Line 466  namespace LinuxSampler { namespace gig {
466      }      }
467    
468      /**      /**
469         *  Will be called by the MIDIIn Thread to signal the audio thread to change
470         *  the pitch value for all voices. This method is meant for offline
471         *  rendering and / or for cases where the exact position of the event in
472         *  the current audio fragment is already known.
473         *
474         *  @param Pitch       - MIDI pitch value (-8192 ... +8191)
475         *  @param FragmentPos - sample point position in the current audio
476         *                       fragment to which this event belongs to
477         */
478        void EngineChannel::SendPitchbend(int Pitch, int32_t FragmentPos) {
479            if (FragmentPos < 0) {
480                dmsg(1,("EngineChannel::SendPitchBend(): negative FragmentPos! Seems MIDI driver is buggy!"));
481            }
482            else if (pEngine) {
483                Event event             = pEngine->pEventGenerator->CreateEvent(FragmentPos);
484                event.Type              = Event::type_pitchbend;
485                event.Param.Pitch.Pitch = Pitch;
486                event.pEngineChannel    = this;
487                if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
488                else dmsg(1,("EngineChannel: Input event queue full!"));
489            }
490        }
491    
492        /**
493       *  Will be called by the MIDIIn Thread to signal the audio thread that a       *  Will be called by the MIDIIn Thread to signal the audio thread that a
494       *  continuous controller value has changed.       *  continuous controller value has changed. This method is meant for real
495         *  time rendering, that is an event will immediately be created with the
496         *  current system time as time stamp.
497       *       *
498       *  @param Controller - MIDI controller number of the occured control change       *  @param Controller - MIDI controller number of the occured control change
499       *  @param Value      - value of the control change       *  @param Value      - value of the control change
# Line 350  namespace LinuxSampler { namespace gig { Line 510  namespace LinuxSampler { namespace gig {
510          }          }
511      }      }
512    
513        /**
514         *  Will be called by the MIDIIn Thread to signal the audio thread that a
515         *  continuous controller value has changed. This method is meant for
516         *  offline rendering and / or for cases where the exact position of the
517         *  event in the current audio fragment is already known.
518         *
519         *  @param Controller  - MIDI controller number of the occured control change
520         *  @param Value       - value of the control change
521         *  @param FragmentPos - sample point position in the current audio
522         *                       fragment to which this event belongs to
523         */
524        void EngineChannel::SendControlChange(uint8_t Controller, uint8_t Value, int32_t FragmentPos) {
525            if (FragmentPos < 0) {
526                dmsg(1,("EngineChannel::SendControlChange(): negative FragmentPos! Seems MIDI driver is buggy!"));
527            }
528            else if (pEngine) {
529                Event event               = pEngine->pEventGenerator->CreateEvent(FragmentPos);
530                event.Type                = Event::type_control_change;
531                event.Param.CC.Controller = Controller;
532                event.Param.CC.Value      = Value;
533                event.pEngineChannel      = this;
534                if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
535                else dmsg(1,("EngineChannel: Input event queue full!"));
536            }
537        }
538    
539        void EngineChannel::ClearEventLists() {
540            pEvents->clear();
541            // empty MIDI key specific event lists
542            {
543                RTList<uint>::Iterator iuiKey = pActiveKeys->first();
544                RTList<uint>::Iterator end    = pActiveKeys->end();
545                for(; iuiKey != end; ++iuiKey) {
546                    pMIDIKeyInfo[*iuiKey].pEvents->clear(); // free all events on the key
547                }
548            }
549        }
550    
551        void EngineChannel::ResetControllers() {
552            Pitch          = 0;
553            SustainPedal   = false;
554            SostenutoPedal = false;
555            GlobalVolume   = CONFIG_GLOBAL_ATTENUATION;
556            MidiVolume     = 1.0;
557            GlobalPanLeft  = 1.0f;
558            GlobalPanRight = 1.0f;
559            // set all MIDI controller values to zero
560            memset(ControllerTable, 0x00, 129);
561        }
562    
563        /**
564         * Copy all events from the engine channel's input event queue buffer to
565         * the internal event list. This will be done at the beginning of each
566         * audio cycle (that is each RenderAudio() call) to distinguish all
567         * events which have to be processed in the current audio cycle. Each
568         * EngineChannel has it's own input event queue for the common channel
569         * specific events (like NoteOn, NoteOff and ControlChange events).
570         * Beside that, the engine also has a input event queue for global
571         * events (usually SysEx messages).
572         *
573         * @param Samples - number of sample points to be processed in the
574         *                  current audio cycle
575         */
576        void EngineChannel::ImportEvents(uint Samples) {
577            RingBuffer<Event>::NonVolatileReader eventQueueReader = pEventQueue->get_non_volatile_reader();
578            Event* pEvent;
579            while (true) {
580                // get next event from input event queue
581                if (!(pEvent = eventQueueReader.pop())) break;
582                // if younger event reached, ignore that and all subsequent ones for now
583                if (pEvent->FragmentPos() >= Samples) {
584                    eventQueueReader--;
585                    dmsg(2,("Younger Event, pos=%d ,Samples=%d!\n",pEvent->FragmentPos(),Samples));
586                    pEvent->ResetFragmentPos();
587                    break;
588                }
589                // copy event to internal event list
590                if (pEvents->poolIsEmpty()) {
591                    dmsg(1,("Event pool emtpy!\n"));
592                    break;
593                }
594                *pEvents->allocAppend() = *pEvent;
595            }
596            eventQueueReader.free(); // free all copied events from input queue
597        }
598    
599      float EngineChannel::Volume() {      float EngineChannel::Volume() {
600          return GlobalVolume;          return GlobalVolume;
601      }      }
602    
603      void EngineChannel::Volume(float f) {      void EngineChannel::Volume(float f) {
604          GlobalVolume = f;          GlobalVolume = f;
605            bStatusChanged = true; // status of engine channel has changed, so set notify flag
606      }      }
607    
608      uint EngineChannel::Channels() {      uint EngineChannel::Channels() {
# Line 376  namespace LinuxSampler { namespace gig { Line 623  namespace LinuxSampler { namespace gig {
623    
624      int EngineChannel::InstrumentStatus() {      int EngineChannel::InstrumentStatus() {
625          return InstrumentStat;          return InstrumentStat;
626      }          }
627    
628        String EngineChannel::EngineName() {
629            return LS_GIG_ENGINE_NAME;
630        }
631    
632  }} // namespace LinuxSampler::gig  }} // namespace LinuxSampler::gig
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