/[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 1001 by schoenebeck, Wed Dec 27 16:17:08 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,false>(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            pChannelLeft  = NULL;
47            pChannelRight = NULL;
48          AudioDeviceChannelLeft  = -1;          AudioDeviceChannelLeft  = -1;
49          AudioDeviceChannelRight = -1;          AudioDeviceChannelRight = -1;
50            pMidiInputPort = NULL;
51            midiChannel = midi_chan_all;
52            ResetControllers();
53            SoloMode       = false;
54            PortamentoMode = false;
55            PortamentoTime = CONFIG_PORTAMENTO_TIME_DEFAULT;
56      }      }
57    
58      EngineChannel::~EngineChannel() {      EngineChannel::~EngineChannel() {
59            DisconnectAudioOutputDevice();
60          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;  
             }  
         }  
61          if (pEventQueue) delete pEventQueue;          if (pEventQueue) delete pEventQueue;
62          if (pActiveKeys) delete pActiveKeys;          if (pActiveKeys) delete pActiveKeys;
63          if (pMIDIKeyInfo) delete[] pMIDIKeyInfo;          if (pMIDIKeyInfo) delete[] pMIDIKeyInfo;
64            RemoveAllFxSends();
65        }
66    
67        /**
68         * Implementation of virtual method from abstract EngineChannel interface.
69         * This method will periodically be polled (e.g. by the LSCP server) to
70         * check if some engine channel parameter has changed since the last
71         * StatusChanged() call.
72         *
73         * This method can also be used to mark the engine channel as changed
74         * from outside, e.g. by a MIDI input device. The optional argument
75         * \a nNewStatus can be used for this.
76         *
77         * TODO: This "poll method" is just a lazy solution and might be
78         *       replaced in future.
79         * @param bNewStatus - (optional, default: false) sets the new status flag
80         * @returns true if engine channel status has changed since last
81         *          StatusChanged() call
82         */
83        bool EngineChannel::StatusChanged(bool bNewStatus) {
84            bool b = bStatusChanged;
85            bStatusChanged = bNewStatus;
86            return b;
87        }
88    
89        void EngineChannel::Reset() {
90            if (pEngine) pEngine->DisableAndLock();
91            ResetInternal();
92            ResetControllers();
93            if (pEngine) {
94                pEngine->Enable();
95                pEngine->Reset();
96            }
97      }      }
98    
99      /**      /**
100       * This method is not thread safe!       * This method is not thread safe!
101       */       */
102      void EngineChannel::ResetInternal() {      void EngineChannel::ResetInternal() {
         Pitch               = 0;  
         SustainPedal        = false;  
         GlobalVolume        = 1.0;  
103          CurrentKeyDimension = 0;          CurrentKeyDimension = 0;
104    
         // set all MIDI controller values to zero  
         memset(ControllerTable, 0x00, 128);  
   
         // reset voice stealing parameters  
         itLastStolenVoice = RTList<Voice>::Iterator();  
         iuiLastStolenKey  = RTList<uint>::Iterator();  
   
105          // reset key info          // reset key info
106          for (uint i = 0; i < 128; i++) {          for (uint i = 0; i < 128; i++) {
107              if (pMIDIKeyInfo[i].pActiveVoices)              if (pMIDIKeyInfo[i].pActiveVoices)
# Line 87  namespace LinuxSampler { namespace gig { Line 112  namespace LinuxSampler { namespace gig {
112              pMIDIKeyInfo[i].Active         = false;              pMIDIKeyInfo[i].Active         = false;
113              pMIDIKeyInfo[i].ReleaseTrigger = false;              pMIDIKeyInfo[i].ReleaseTrigger = false;
114              pMIDIKeyInfo[i].itSelf         = Pool<uint>::Iterator();              pMIDIKeyInfo[i].itSelf         = Pool<uint>::Iterator();
115                pMIDIKeyInfo[i].VoiceTheftsQueued = 0;
116          }          }
117            SoloKey       = -1;    // no solo key active yet
118            PortamentoPos = -1.0f; // no portamento active yet
119    
120          // reset all key groups          // reset all key groups
121          std::map<uint,uint*>::iterator iter = ActiveKeyGroups.begin();          std::map<uint,uint*>::iterator iter = ActiveKeyGroups.begin();
# Line 100  namespace LinuxSampler { namespace gig { Line 128  namespace LinuxSampler { namespace gig {
128          pEventQueue->init();          pEventQueue->init();
129    
130          if (pEngine) pEngine->ResetInternal();          if (pEngine) pEngine->ResetInternal();
131    
132            // status of engine channel has changed, so set notify flag
133            bStatusChanged = true;
134      }      }
135    
136      LinuxSampler::Engine* EngineChannel::GetEngine() {      LinuxSampler::Engine* EngineChannel::GetEngine() {
# Line 134  namespace LinuxSampler { namespace gig { Line 165  namespace LinuxSampler { namespace gig {
165      void EngineChannel::LoadInstrument() {      void EngineChannel::LoadInstrument() {
166    
167          if (pEngine) pEngine->DisableAndLock();          if (pEngine) pEngine->DisableAndLock();
168            
169          ResetInternal();          ResetInternal();
170            
171          // free old instrument          // free old instrument
172          if (pInstrument) {          if (pInstrument) {
173              // give old instrument back to instrument manager              // give old instrument back to instrument manager
# Line 148  namespace LinuxSampler { namespace gig { Line 179  namespace LinuxSampler { namespace gig {
179    
180          // request gig instrument from instrument manager          // request gig instrument from instrument manager
181          try {          try {
182              instrument_id_t instrid;              InstrumentManager::instrument_id_t instrid;
183              instrid.FileName    = InstrumentFile;              instrid.FileName  = InstrumentFile;
184              instrid.iInstrument = InstrumentIdx;              instrid.Index     = InstrumentIdx;
185              pInstrument = Engine::instruments.Borrow(instrid, this);              pInstrument = Engine::instruments.Borrow(instrid, this);
186              if (!pInstrument) {              if (!pInstrument) {
187                  InstrumentStat = -1;                  InstrumentStat = -1;
# Line 161  namespace LinuxSampler { namespace gig { Line 192  namespace LinuxSampler { namespace gig {
192          catch (RIFF::Exception e) {          catch (RIFF::Exception e) {
193              InstrumentStat = -2;              InstrumentStat = -2;
194              String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message;              String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message;
195              throw LinuxSamplerException(msg);              throw Exception(msg);
196          }          }
197          catch (InstrumentResourceManagerException e) {          catch (InstrumentResourceManagerException e) {
198              InstrumentStat = -3;              InstrumentStat = -3;
199              String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message();              String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message();
200              throw LinuxSamplerException(msg);              throw Exception(msg);
201          }          }
202          catch (...) {          catch (...) {
203              InstrumentStat = -4;              InstrumentStat = -4;
204              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.");
205          }          }
206    
207          // 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 218  namespace LinuxSampler { namespace gig {
218          }          }
219          catch (AudioOutputException e) {          catch (AudioOutputException e) {
220              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();
221              throw LinuxSamplerException(msg);              throw Exception(msg);
222          }          }
223    
224          if (pEngine) pEngine->Enable();          if (pEngine) pEngine->Enable();
# Line 195  namespace LinuxSampler { namespace gig { Line 226  namespace LinuxSampler { namespace gig {
226    
227      /**      /**
228       * Will be called by the InstrumentResourceManager when the instrument       * Will be called by the InstrumentResourceManager when the instrument
229       * 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,
230       * can stop playback before that happens.       * so we can stop playback before that happens.
231       */       */
232      void EngineChannel::ResourceToBeUpdated(::gig::Instrument* pResource, void*& pUpdateArg) {      void EngineChannel::ResourceToBeUpdated(::gig::Instrument* pResource, void*& pUpdateArg) {
233          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 243  namespace LinuxSampler { namespace gig {
243      void EngineChannel::ResourceUpdated(::gig::Instrument* pOldResource, ::gig::Instrument* pNewResource, void* pUpdateArg) {      void EngineChannel::ResourceUpdated(::gig::Instrument* pOldResource, ::gig::Instrument* pNewResource, void* pUpdateArg) {
244          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())
245          if (pEngine) pEngine->Enable();          if (pEngine) pEngine->Enable();
246            bStatusChanged = true; // status of engine has changed, so set notify flag
247        }
248    
249        /**
250         * Will be called by the InstrumentResourceManager on progress changes
251         * while loading or realoading an instrument for this EngineChannel.
252         *
253         * @param fProgress - current progress as value between 0.0 and 1.0
254         */
255        void EngineChannel::OnResourceProgress(float fProgress) {
256            this->InstrumentStat = int(fProgress * 100.0f);
257            dmsg(7,("gig::EngineChannel: progress %d%", InstrumentStat));
258            bStatusChanged = true; // status of engine has changed, so set notify flag
259      }      }
260    
261      void EngineChannel::Connect(AudioOutputDevice* pAudioOut) {      void EngineChannel::Connect(AudioOutputDevice* pAudioOut) {
262          if (pEngine && pEngine->pAudioOutputDevice != pAudioOut) {          if (pEngine) {
263                if (pEngine->pAudioOutputDevice == pAudioOut) return;
264              DisconnectAudioOutputDevice();              DisconnectAudioOutputDevice();
265          }          }
266          pEngine = Engine::AcquireEngine(this, pAudioOut);          pEngine = Engine::AcquireEngine(this, pAudioOut);
267          ResetInternal();                  ResetInternal();
268            pEvents = new RTList<Event>(pEngine->pEventPool);
269          for (uint i = 0; i < 128; i++) {          for (uint i = 0; i < 128; i++) {
270              pMIDIKeyInfo[i].pActiveVoices = new RTList<Voice>(pEngine->pVoicePool);              pMIDIKeyInfo[i].pActiveVoices = new RTList<Voice>(pEngine->pVoicePool);
271              pMIDIKeyInfo[i].pEvents       = new RTList<Event>(pEngine->pEventPool);              pMIDIKeyInfo[i].pEvents       = new RTList<Event>(pEngine->pEventPool);
272          }          }
273          AudioDeviceChannelLeft  = 0;          AudioDeviceChannelLeft  = 0;
274          AudioDeviceChannelRight = 1;          AudioDeviceChannelRight = 1;
275          pOutputLeft             = pAudioOut->Channel(0)->Buffer();          if (fxSends.empty()) { // render directly into the AudioDevice's output buffers
276          pOutputRight            = pAudioOut->Channel(1)->Buffer();              pChannelLeft  = pAudioOut->Channel(AudioDeviceChannelLeft);
277                pChannelRight = pAudioOut->Channel(AudioDeviceChannelRight);
278            } else { // use local buffers for rendering and copy later
279                // ensure the local buffers have the correct size
280                if (pChannelLeft)  delete pChannelLeft;
281                if (pChannelRight) delete pChannelRight;
282                pChannelLeft  = new AudioChannel(0, pAudioOut->MaxSamplesPerCycle());
283                pChannelRight = new AudioChannel(1, pAudioOut->MaxSamplesPerCycle());
284            }
285            MidiInputPort::AddSysexListener(pEngine);
286      }      }
287    
288      void EngineChannel::DisconnectAudioOutputDevice() {      void EngineChannel::DisconnectAudioOutputDevice() {
289          if (pEngine) { // if clause to prevent disconnect loops          if (pEngine) { // if clause to prevent disconnect loops
290              ResetInternal();              ResetInternal();
291                if (pEvents) {
292                    delete pEvents;
293                    pEvents = NULL;
294                }
295              for (uint i = 0; i < 128; i++) {              for (uint i = 0; i < 128; i++) {
296                  if (pMIDIKeyInfo[i].pActiveVoices) delete pMIDIKeyInfo[i].pActiveVoices;                  if (pMIDIKeyInfo[i].pActiveVoices) {
297                  if (pMIDIKeyInfo[i].pEvents)       delete pMIDIKeyInfo[i].pEvents;                      delete pMIDIKeyInfo[i].pActiveVoices;
298                        pMIDIKeyInfo[i].pActiveVoices = NULL;
299                    }
300                    if (pMIDIKeyInfo[i].pEvents) {
301                        delete pMIDIKeyInfo[i].pEvents;
302                        pMIDIKeyInfo[i].pEvents = NULL;
303                    }
304              }              }
305              Engine* oldEngine = pEngine;              Engine* oldEngine = pEngine;
306              AudioOutputDevice* oldAudioDevice = pEngine->pAudioOutputDevice;              AudioOutputDevice* oldAudioDevice = pEngine->pAudioOutputDevice;
307              pEngine = NULL;              pEngine = NULL;
308              Engine::FreeEngine(this, oldAudioDevice);              Engine::FreeEngine(this, oldAudioDevice);
309              AudioDeviceChannelLeft  = -1;              AudioDeviceChannelLeft  = -1;
310              AudioDeviceChannelRight = -1;                          AudioDeviceChannelRight = -1;
311                if (!fxSends.empty()) { // free the local rendering buffers
312                    if (pChannelLeft)  delete pChannelLeft;
313                    if (pChannelRight) delete pChannelRight;
314                }
315                pChannelLeft  = NULL;
316                pChannelRight = NULL;
317          }          }
318      }      }
319    
320        AudioOutputDevice* EngineChannel::GetAudioOutputDevice() {
321            return (pEngine) ? pEngine->pAudioOutputDevice : NULL;
322        }
323    
324      void EngineChannel::SetOutputChannel(uint EngineAudioChannel, uint AudioDeviceChannel) {      void EngineChannel::SetOutputChannel(uint EngineAudioChannel, uint AudioDeviceChannel) {
325          if (!pEngine || !pEngine->pAudioOutputDevice) throw AudioOutputException("No audio output device connected yet.");          if (!pEngine || !pEngine->pAudioOutputDevice) throw AudioOutputException("No audio output device connected yet.");
326            
327          AudioChannel* pChannel = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannel);          AudioChannel* pChannel = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannel);
328          if (!pChannel) throw AudioOutputException("Invalid audio output device channel " + ToString(AudioDeviceChannel));          if (!pChannel) throw AudioOutputException("Invalid audio output device channel " + ToString(AudioDeviceChannel));
329          switch (EngineAudioChannel) {          switch (EngineAudioChannel) {
330              case 0: // left output channel              case 0: // left output channel
331                  pOutputLeft = pChannel->Buffer();                  if (fxSends.empty()) pChannelLeft = pChannel;
332                  AudioDeviceChannelLeft = AudioDeviceChannel;                  AudioDeviceChannelLeft = AudioDeviceChannel;
333                  break;                  break;
334              case 1: // right output channel              case 1: // right output channel
335                  pOutputRight = pChannel->Buffer();                  if (fxSends.empty()) pChannelRight = pChannel;
336                  AudioDeviceChannelRight = AudioDeviceChannel;                  AudioDeviceChannelRight = AudioDeviceChannel;
337                  break;                  break;
338              default:              default:
# Line 276  namespace LinuxSampler { namespace gig { Line 351  namespace LinuxSampler { namespace gig {
351          }          }
352      }      }
353    
354        void EngineChannel::Connect(MidiInputPort* pMidiPort, midi_chan_t MidiChannel) {
355            if (!pMidiPort || pMidiPort == this->pMidiInputPort) return;
356            DisconnectMidiInputPort();
357            this->pMidiInputPort = pMidiPort;
358            this->midiChannel    = MidiChannel;
359            pMidiPort->Connect(this, MidiChannel);
360        }
361    
362        void EngineChannel::DisconnectMidiInputPort() {
363            MidiInputPort* pOldPort = this->pMidiInputPort;
364            this->pMidiInputPort = NULL;
365            if (pOldPort) pOldPort->Disconnect(this);
366        }
367    
368        MidiInputPort* EngineChannel::GetMidiInputPort() {
369            return pMidiInputPort;
370        }
371    
372        midi_chan_t EngineChannel::MidiChannel() {
373            return midiChannel;
374        }
375    
376        FxSend* EngineChannel::AddFxSend(uint8_t MidiCtrl, String Name) throw (Exception) {
377            if (pEngine) pEngine->DisableAndLock();
378            FxSend* pFxSend = new FxSend(this, MidiCtrl, Name);
379            if (fxSends.empty()) {
380                if (pEngine && pEngine->pAudioOutputDevice) {
381                    AudioOutputDevice* pDevice = pEngine->pAudioOutputDevice;
382                    // create local render buffers
383                    pChannelLeft  = new AudioChannel(0, pDevice->MaxSamplesPerCycle());
384                    pChannelRight = new AudioChannel(1, pDevice->MaxSamplesPerCycle());
385                } else {
386                    // postpone local render buffer creation until audio device is assigned
387                    pChannelLeft  = NULL;
388                    pChannelRight = NULL;
389                }
390            }
391            fxSends.push_back(pFxSend);
392            if (pEngine) pEngine->Enable();
393            return pFxSend;
394        }
395    
396        FxSend* EngineChannel::GetFxSend(uint FxSendIndex) {
397            return (FxSendIndex < fxSends.size()) ? fxSends[FxSendIndex] : NULL;
398        }
399    
400        uint EngineChannel::GetFxSendCount() {
401            return fxSends.size();
402        }
403    
404        void EngineChannel::RemoveFxSend(FxSend* pFxSend) {
405            if (pEngine) pEngine->DisableAndLock();
406            for (
407                std::vector<FxSend*>::iterator iter = fxSends.begin();
408                iter != fxSends.end(); iter++
409            ) {
410                if (*iter == pFxSend) {
411                    delete pFxSend;
412                    fxSends.erase(iter);
413                    if (fxSends.empty()) {
414                        // destroy local render buffers
415                        if (pChannelLeft)  delete pChannelLeft;
416                        if (pChannelRight) delete pChannelRight;
417                        // fallback to render directly into AudioOutputDevice's buffers
418                        if (pEngine && pEngine->pAudioOutputDevice) {
419                            pChannelLeft  = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelLeft);
420                            pChannelRight = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelRight);
421                        } else { // we update the pointers later
422                            pChannelLeft  = NULL;
423                            pChannelRight = NULL;
424                        }
425                    }
426                    break;
427                }
428            }
429            if (pEngine) pEngine->Enable();
430        }
431    
432      /**      /**
433       *  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
434       *  voice for the given key.       *  voice for the given key. This method is meant for real time rendering,
435         *  that is an event will immediately be created with the current system
436         *  time as time stamp.
437       *       *
438       *  @param Key      - MIDI key number of the triggered key       *  @param Key      - MIDI key number of the triggered key
439       *  @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 444  namespace LinuxSampler { namespace gig {
444              event.Type                = Event::type_note_on;              event.Type                = Event::type_note_on;
445              event.Param.Note.Key      = Key;              event.Param.Note.Key      = Key;
446              event.Param.Note.Velocity = Velocity;              event.Param.Note.Velocity = Velocity;
447              event.pEngineChannel      = this;                          event.pEngineChannel      = this;
448                if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
449                else dmsg(1,("EngineChannel: Input event queue full!"));
450            }
451        }
452    
453        /**
454         *  Will be called by the MIDIIn Thread to let the audio thread trigger a new
455         *  voice for the given key. This method is meant for offline rendering
456         *  and / or for cases where the exact position of the event in the current
457         *  audio fragment is already known.
458         *
459         *  @param Key         - MIDI key number of the triggered key
460         *  @param Velocity    - MIDI velocity value of the triggered key
461         *  @param FragmentPos - sample point position in the current audio
462         *                       fragment to which this event belongs to
463         */
464        void EngineChannel::SendNoteOn(uint8_t Key, uint8_t Velocity, int32_t FragmentPos) {
465            if (FragmentPos < 0) {
466                dmsg(1,("EngineChannel::SendNoteOn(): negative FragmentPos! Seems MIDI driver is buggy!"));
467            }
468            else if (pEngine) {
469                Event event               = pEngine->pEventGenerator->CreateEvent(FragmentPos);
470                event.Type                = Event::type_note_on;
471                event.Param.Note.Key      = Key;
472                event.Param.Note.Velocity = Velocity;
473                event.pEngineChannel      = this;
474              if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);              if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
475              else dmsg(1,("EngineChannel: Input event queue full!"));              else dmsg(1,("EngineChannel: Input event queue full!"));
476          }          }
# Line 297  namespace LinuxSampler { namespace gig { Line 478  namespace LinuxSampler { namespace gig {
478    
479      /**      /**
480       *  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
481       *  voice(s) on the given key.       *  voice(s) on the given key. This method is meant for real time rendering,
482         *  that is an event will immediately be created with the current system
483         *  time as time stamp.
484       *       *
485       *  @param Key      - MIDI key number of the released key       *  @param Key      - MIDI key number of the released key
486       *  @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 498  namespace LinuxSampler { namespace gig {
498      }      }
499    
500      /**      /**
501         *  Will be called by the MIDIIn Thread to signal the audio thread to release
502         *  voice(s) on the given key. This method is meant for offline rendering
503         *  and / or for cases where the exact position of the event in the current
504         *  audio fragment is already known.
505         *
506         *  @param Key         - MIDI key number of the released key
507         *  @param Velocity    - MIDI release velocity value of the released key
508         *  @param FragmentPos - sample point position in the current audio
509         *                       fragment to which this event belongs to
510         */
511        void EngineChannel::SendNoteOff(uint8_t Key, uint8_t Velocity, int32_t FragmentPos) {
512            if (FragmentPos < 0) {
513                dmsg(1,("EngineChannel::SendNoteOff(): negative FragmentPos! Seems MIDI driver is buggy!"));
514            }
515            else if (pEngine) {
516                Event event               = pEngine->pEventGenerator->CreateEvent(FragmentPos);
517                event.Type                = Event::type_note_off;
518                event.Param.Note.Key      = Key;
519                event.Param.Note.Velocity = Velocity;
520                event.pEngineChannel      = this;
521                if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
522                else dmsg(1,("EngineChannel: Input event queue full!"));
523            }
524        }
525    
526        /**
527       *  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
528       *  the pitch value for all voices.       *  the pitch value for all voices. This method is meant for real time
529         *  rendering, that is an event will immediately be created with the
530         *  current system time as time stamp.
531       *       *
532       *  @param Pitch - MIDI pitch value (-8192 ... +8191)       *  @param Pitch - MIDI pitch value (-8192 ... +8191)
533       */       */
534      void EngineChannel::SendPitchbend(int Pitch) {      void EngineChannel::SendPitchbend(int Pitch) {
535          if (pEngine) {                  if (pEngine) {
536              Event event             = pEngine->pEventGenerator->CreateEvent();              Event event             = pEngine->pEventGenerator->CreateEvent();
537              event.Type              = Event::type_pitchbend;              event.Type              = Event::type_pitchbend;
538              event.Param.Pitch.Pitch = Pitch;              event.Param.Pitch.Pitch = Pitch;
# Line 332  namespace LinuxSampler { namespace gig { Line 543  namespace LinuxSampler { namespace gig {
543      }      }
544    
545      /**      /**
546         *  Will be called by the MIDIIn Thread to signal the audio thread to change
547         *  the pitch value for all voices. This method is meant for offline
548         *  rendering and / or for cases where the exact position of the event in
549         *  the current audio fragment is already known.
550         *
551         *  @param Pitch       - MIDI pitch value (-8192 ... +8191)
552         *  @param FragmentPos - sample point position in the current audio
553         *                       fragment to which this event belongs to
554         */
555        void EngineChannel::SendPitchbend(int Pitch, int32_t FragmentPos) {
556            if (FragmentPos < 0) {
557                dmsg(1,("EngineChannel::SendPitchBend(): negative FragmentPos! Seems MIDI driver is buggy!"));
558            }
559            else if (pEngine) {
560                Event event             = pEngine->pEventGenerator->CreateEvent(FragmentPos);
561                event.Type              = Event::type_pitchbend;
562                event.Param.Pitch.Pitch = Pitch;
563                event.pEngineChannel    = this;
564                if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
565                else dmsg(1,("EngineChannel: Input event queue full!"));
566            }
567        }
568    
569        /**
570       *  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
571       *  continuous controller value has changed.       *  continuous controller value has changed. This method is meant for real
572         *  time rendering, that is an event will immediately be created with the
573         *  current system time as time stamp.
574       *       *
575       *  @param Controller - MIDI controller number of the occured control change       *  @param Controller - MIDI controller number of the occured control change
576       *  @param Value      - value of the control change       *  @param Value      - value of the control change
# Line 350  namespace LinuxSampler { namespace gig { Line 587  namespace LinuxSampler { namespace gig {
587          }          }
588      }      }
589    
590        /**
591         *  Will be called by the MIDIIn Thread to signal the audio thread that a
592         *  continuous controller value has changed. This method is meant for
593         *  offline rendering and / or for cases where the exact position of the
594         *  event in the current audio fragment is already known.
595         *
596         *  @param Controller  - MIDI controller number of the occured control change
597         *  @param Value       - value of the control change
598         *  @param FragmentPos - sample point position in the current audio
599         *                       fragment to which this event belongs to
600         */
601        void EngineChannel::SendControlChange(uint8_t Controller, uint8_t Value, int32_t FragmentPos) {
602            if (FragmentPos < 0) {
603                dmsg(1,("EngineChannel::SendControlChange(): negative FragmentPos! Seems MIDI driver is buggy!"));
604            }
605            else if (pEngine) {
606                Event event               = pEngine->pEventGenerator->CreateEvent(FragmentPos);
607                event.Type                = Event::type_control_change;
608                event.Param.CC.Controller = Controller;
609                event.Param.CC.Value      = Value;
610                event.pEngineChannel      = this;
611                if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
612                else dmsg(1,("EngineChannel: Input event queue full!"));
613            }
614        }
615    
616        void EngineChannel::ClearEventLists() {
617            pEvents->clear();
618            // empty MIDI key specific event lists
619            {
620                RTList<uint>::Iterator iuiKey = pActiveKeys->first();
621                RTList<uint>::Iterator end    = pActiveKeys->end();
622                for(; iuiKey != end; ++iuiKey) {
623                    pMIDIKeyInfo[*iuiKey].pEvents->clear(); // free all events on the key
624                }
625            }
626        }
627    
628        void EngineChannel::ResetControllers() {
629            Pitch          = 0;
630            SustainPedal   = false;
631            SostenutoPedal = false;
632            GlobalVolume   = CONFIG_GLOBAL_ATTENUATION;
633            MidiVolume     = 1.0;
634            GlobalPanLeft  = 1.0f;
635            GlobalPanRight = 1.0f;
636            // set all MIDI controller values to zero
637            memset(ControllerTable, 0x00, 129);
638        }
639    
640        /**
641         * Copy all events from the engine channel's input event queue buffer to
642         * the internal event list. This will be done at the beginning of each
643         * audio cycle (that is each RenderAudio() call) to distinguish all
644         * events which have to be processed in the current audio cycle. Each
645         * EngineChannel has it's own input event queue for the common channel
646         * specific events (like NoteOn, NoteOff and ControlChange events).
647         * Beside that, the engine also has a input event queue for global
648         * events (usually SysEx messages).
649         *
650         * @param Samples - number of sample points to be processed in the
651         *                  current audio cycle
652         */
653        void EngineChannel::ImportEvents(uint Samples) {
654            RingBuffer<Event,false>::NonVolatileReader eventQueueReader = pEventQueue->get_non_volatile_reader();
655            Event* pEvent;
656            while (true) {
657                // get next event from input event queue
658                if (!(pEvent = eventQueueReader.pop())) break;
659                // if younger event reached, ignore that and all subsequent ones for now
660                if (pEvent->FragmentPos() >= Samples) {
661                    eventQueueReader--;
662                    dmsg(2,("Younger Event, pos=%d ,Samples=%d!\n",pEvent->FragmentPos(),Samples));
663                    pEvent->ResetFragmentPos();
664                    break;
665                }
666                // copy event to internal event list
667                if (pEvents->poolIsEmpty()) {
668                    dmsg(1,("Event pool emtpy!\n"));
669                    break;
670                }
671                *pEvents->allocAppend() = *pEvent;
672            }
673            eventQueueReader.free(); // free all copied events from input queue
674        }
675    
676        void EngineChannel::RemoveAllFxSends() {
677            if (pEngine) pEngine->DisableAndLock();
678            if (!fxSends.empty()) { // free local render buffers
679                if (pChannelLeft) {
680                    delete pChannelLeft;
681                    if (pEngine && pEngine->pAudioOutputDevice) {
682                        // fallback to render directly to the AudioOutputDevice's buffer
683                        pChannelLeft = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelLeft);
684                    } else pChannelLeft = NULL;
685                }
686                if (pChannelRight) {
687                    delete pChannelRight;
688                    if (pEngine && pEngine->pAudioOutputDevice) {
689                        // fallback to render directly to the AudioOutputDevice's buffer
690                        pChannelRight = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelRight);
691                    } else pChannelRight = NULL;
692                }
693            }
694            for (int i = 0; i < fxSends.size(); i++) delete fxSends[i];
695            fxSends.clear();
696            if (pEngine) pEngine->Enable();
697        }
698    
699      float EngineChannel::Volume() {      float EngineChannel::Volume() {
700          return GlobalVolume;          return GlobalVolume;
701      }      }
702    
703      void EngineChannel::Volume(float f) {      void EngineChannel::Volume(float f) {
704          GlobalVolume = f;          GlobalVolume = f;
705            bStatusChanged = true; // status of engine channel has changed, so set notify flag
706      }      }
707    
708      uint EngineChannel::Channels() {      uint EngineChannel::Channels() {
# Line 376  namespace LinuxSampler { namespace gig { Line 723  namespace LinuxSampler { namespace gig {
723    
724      int EngineChannel::InstrumentStatus() {      int EngineChannel::InstrumentStatus() {
725          return InstrumentStat;          return InstrumentStat;
726      }          }
727    
728        String EngineChannel::EngineName() {
729            return LS_GIG_ENGINE_NAME;
730        }
731    
732  }} // namespace LinuxSampler::gig  }} // namespace LinuxSampler::gig
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