/[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 1041 by schoenebeck, Wed Feb 7 17:45:19 2007 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 - 2007 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 132  namespace LinuxSampler { namespace gig { Line 163  namespace LinuxSampler { namespace gig {
163       * @see PrepareLoadInstrument()       * @see PrepareLoadInstrument()
164       */       */
165      void EngineChannel::LoadInstrument() {      void EngineChannel::LoadInstrument() {
166            ::gig::Instrument* oldInstrument = pInstrument;
167    
         if (pEngine) pEngine->DisableAndLock();  
           
         ResetInternal();  
           
168          // free old instrument          // free old instrument
169          if (pInstrument) {          if (oldInstrument) {
170              // give old instrument back to instrument manager              if (pEngine) {
171              Engine::instruments.HandBack(pInstrument, this);                  // make sure we don't trigger any new notes with the
172                    // old instrument
173                    ::gig::DimensionRegion** dimRegionsInUse = pEngine->ChangeInstrument(this, 0);
174    
175                    // give old instrument back to instrument manager, but
176                    // keep the dimension regions and samples that are in
177                    // use
178                    Engine::instruments.HandBackInstrument(oldInstrument, this, dimRegionsInUse);
179                } else {
180                    Engine::instruments.HandBack(oldInstrument, this);
181                }
182          }          }
183    
184          // delete all key groups          // delete all key groups
185          ActiveKeyGroups.clear();          ActiveKeyGroups.clear();
186    
187          // request gig instrument from instrument manager          // request gig instrument from instrument manager
188            ::gig::Instrument* newInstrument;
189          try {          try {
190              instrument_id_t instrid;              InstrumentManager::instrument_id_t instrid;
191              instrid.FileName    = InstrumentFile;              instrid.FileName  = InstrumentFile;
192              instrid.iInstrument = InstrumentIdx;              instrid.Index     = InstrumentIdx;
193              pInstrument = Engine::instruments.Borrow(instrid, this);              newInstrument = Engine::instruments.Borrow(instrid, this);
194              if (!pInstrument) {              if (!newInstrument) {
195                  InstrumentStat = -1;                  throw InstrumentResourceManagerException("resource was not created");
                 dmsg(1,("no instrument loaded!!!\n"));  
                 exit(EXIT_FAILURE);  
196              }              }
197          }          }
198          catch (RIFF::Exception e) {          catch (RIFF::Exception e) {
199              InstrumentStat = -2;              InstrumentStat = -2;
200              String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message;              String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message;
201              throw LinuxSamplerException(msg);              throw Exception(msg);
202          }          }
203          catch (InstrumentResourceManagerException e) {          catch (InstrumentResourceManagerException e) {
204              InstrumentStat = -3;              InstrumentStat = -3;
205              String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message();              String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message();
206              throw LinuxSamplerException(msg);              throw Exception(msg);
207          }          }
208          catch (...) {          catch (...) {
209              InstrumentStat = -4;              InstrumentStat = -4;
210              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.");
211          }          }
212    
213          // rebuild ActiveKeyGroups map with key groups of current instrument          // rebuild ActiveKeyGroups map with key groups of current instrument
214          for (::gig::Region* pRegion = pInstrument->GetFirstRegion(); pRegion; pRegion = pInstrument->GetNextRegion())          for (::gig::Region* pRegion = newInstrument->GetFirstRegion(); pRegion; pRegion = newInstrument->GetNextRegion())
215              if (pRegion->KeyGroup) ActiveKeyGroups[pRegion->KeyGroup] = NULL;              if (pRegion->KeyGroup) ActiveKeyGroups[pRegion->KeyGroup] = NULL;
216    
217          InstrumentIdxName = pInstrument->pInfo->Name;          InstrumentIdxName = newInstrument->pInfo->Name;
218          InstrumentStat = 100;          InstrumentStat = 100;
219    
220          // inform audio driver for the need of two channels          if (pEngine) pEngine->ChangeInstrument(this, newInstrument);
221          try {          else pInstrument = newInstrument;
             if (pEngine && pEngine->pAudioOutputDevice)  
                 pEngine->pAudioOutputDevice->AcquireChannels(2); // gig Engine only stereo  
         }  
         catch (AudioOutputException e) {  
             String msg = "Audio output device unable to provide 2 audio channels, cause: " + e.Message();  
             throw LinuxSamplerException(msg);  
         }  
   
         if (pEngine) pEngine->Enable();  
222      }      }
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);
269          }          }
270          AudioDeviceChannelLeft  = 0;          AudioDeviceChannelLeft  = 0;
271          AudioDeviceChannelRight = 1;          AudioDeviceChannelRight = 1;
272          pOutputLeft             = pAudioOut->Channel(0)->Buffer();          if (fxSends.empty()) { // render directly into the AudioDevice's output buffers
273          pOutputRight            = pAudioOut->Channel(1)->Buffer();              pChannelLeft  = pAudioOut->Channel(AudioDeviceChannelLeft);
274                pChannelRight = pAudioOut->Channel(AudioDeviceChannelRight);
275            } else { // use local buffers for rendering and copy later
276                // ensure the local buffers have the correct size
277                if (pChannelLeft)  delete pChannelLeft;
278                if (pChannelRight) delete pChannelRight;
279                pChannelLeft  = new AudioChannel(0, pAudioOut->MaxSamplesPerCycle());
280                pChannelRight = new AudioChannel(1, pAudioOut->MaxSamplesPerCycle());
281            }
282            if (pEngine->EngineDisabled.GetUnsafe()) pEngine->Enable();
283            MidiInputPort::AddSysexListener(pEngine);
284      }      }
285    
286      void EngineChannel::DisconnectAudioOutputDevice() {      void EngineChannel::DisconnectAudioOutputDevice() {
287          if (pEngine) { // if clause to prevent disconnect loops          if (pEngine) { // if clause to prevent disconnect loops
288              ResetInternal();              ResetInternal();
289                if (pEvents) {
290                    delete pEvents;
291                    pEvents = NULL;
292                }
293              for (uint i = 0; i < 128; i++) {              for (uint i = 0; i < 128; i++) {
294                  if (pMIDIKeyInfo[i].pActiveVoices) delete pMIDIKeyInfo[i].pActiveVoices;                  if (pMIDIKeyInfo[i].pActiveVoices) {
295                  if (pMIDIKeyInfo[i].pEvents)       delete pMIDIKeyInfo[i].pEvents;                      delete pMIDIKeyInfo[i].pActiveVoices;
296                        pMIDIKeyInfo[i].pActiveVoices = NULL;
297                    }
298                    if (pMIDIKeyInfo[i].pEvents) {
299                        delete pMIDIKeyInfo[i].pEvents;
300                        pMIDIKeyInfo[i].pEvents = NULL;
301                    }
302              }              }
303              Engine* oldEngine = pEngine;              Engine* oldEngine = pEngine;
304              AudioOutputDevice* oldAudioDevice = pEngine->pAudioOutputDevice;              AudioOutputDevice* oldAudioDevice = pEngine->pAudioOutputDevice;
305              pEngine = NULL;              pEngine = NULL;
306              Engine::FreeEngine(this, oldAudioDevice);              Engine::FreeEngine(this, oldAudioDevice);
307              AudioDeviceChannelLeft  = -1;              AudioDeviceChannelLeft  = -1;
308              AudioDeviceChannelRight = -1;                          AudioDeviceChannelRight = -1;
309                if (!fxSends.empty()) { // free the local rendering buffers
310                    if (pChannelLeft)  delete pChannelLeft;
311                    if (pChannelRight) delete pChannelRight;
312                }
313                pChannelLeft  = NULL;
314                pChannelRight = NULL;
315          }          }
316      }      }
317    
318        AudioOutputDevice* EngineChannel::GetAudioOutputDevice() {
319            return (pEngine) ? pEngine->pAudioOutputDevice : NULL;
320        }
321    
322      void EngineChannel::SetOutputChannel(uint EngineAudioChannel, uint AudioDeviceChannel) {      void EngineChannel::SetOutputChannel(uint EngineAudioChannel, uint AudioDeviceChannel) {
323          if (!pEngine || !pEngine->pAudioOutputDevice) throw AudioOutputException("No audio output device connected yet.");          if (!pEngine || !pEngine->pAudioOutputDevice) throw AudioOutputException("No audio output device connected yet.");
324            
325          AudioChannel* pChannel = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannel);          AudioChannel* pChannel = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannel);
326          if (!pChannel) throw AudioOutputException("Invalid audio output device channel " + ToString(AudioDeviceChannel));          if (!pChannel) throw AudioOutputException("Invalid audio output device channel " + ToString(AudioDeviceChannel));
327          switch (EngineAudioChannel) {          switch (EngineAudioChannel) {
328              case 0: // left output channel              case 0: // left output channel
329                  pOutputLeft = pChannel->Buffer();                  if (fxSends.empty()) pChannelLeft = pChannel;
330                  AudioDeviceChannelLeft = AudioDeviceChannel;                  AudioDeviceChannelLeft = AudioDeviceChannel;
331                  break;                  break;
332              case 1: // right output channel              case 1: // right output channel
333                  pOutputRight = pChannel->Buffer();                  if (fxSends.empty()) pChannelRight = pChannel;
334                  AudioDeviceChannelRight = AudioDeviceChannel;                  AudioDeviceChannelRight = AudioDeviceChannel;
335                  break;                  break;
336              default:              default:
# Line 276  namespace LinuxSampler { namespace gig { Line 349  namespace LinuxSampler { namespace gig {
349          }          }
350      }      }
351    
352        void EngineChannel::Connect(MidiInputPort* pMidiPort, midi_chan_t MidiChannel) {
353            if (!pMidiPort || pMidiPort == this->pMidiInputPort) return;
354            DisconnectMidiInputPort();
355            this->pMidiInputPort = pMidiPort;
356            this->midiChannel    = MidiChannel;
357            pMidiPort->Connect(this, MidiChannel);
358        }
359    
360        void EngineChannel::DisconnectMidiInputPort() {
361            MidiInputPort* pOldPort = this->pMidiInputPort;
362            this->pMidiInputPort = NULL;
363            if (pOldPort) pOldPort->Disconnect(this);
364        }
365    
366        MidiInputPort* EngineChannel::GetMidiInputPort() {
367            return pMidiInputPort;
368        }
369    
370        midi_chan_t EngineChannel::MidiChannel() {
371            return midiChannel;
372        }
373    
374        FxSend* EngineChannel::AddFxSend(uint8_t MidiCtrl, String Name) throw (Exception) {
375            if (pEngine) pEngine->DisableAndLock();
376            FxSend* pFxSend = new FxSend(this, MidiCtrl, Name);
377            if (fxSends.empty()) {
378                if (pEngine && pEngine->pAudioOutputDevice) {
379                    AudioOutputDevice* pDevice = pEngine->pAudioOutputDevice;
380                    // create local render buffers
381                    pChannelLeft  = new AudioChannel(0, pDevice->MaxSamplesPerCycle());
382                    pChannelRight = new AudioChannel(1, pDevice->MaxSamplesPerCycle());
383                } else {
384                    // postpone local render buffer creation until audio device is assigned
385                    pChannelLeft  = NULL;
386                    pChannelRight = NULL;
387                }
388            }
389            fxSends.push_back(pFxSend);
390            if (pEngine) pEngine->Enable();
391            return pFxSend;
392        }
393    
394        FxSend* EngineChannel::GetFxSend(uint FxSendIndex) {
395            return (FxSendIndex < fxSends.size()) ? fxSends[FxSendIndex] : NULL;
396        }
397    
398        uint EngineChannel::GetFxSendCount() {
399            return fxSends.size();
400        }
401    
402        void EngineChannel::RemoveFxSend(FxSend* pFxSend) {
403            if (pEngine) pEngine->DisableAndLock();
404            for (
405                std::vector<FxSend*>::iterator iter = fxSends.begin();
406                iter != fxSends.end(); iter++
407            ) {
408                if (*iter == pFxSend) {
409                    delete pFxSend;
410                    fxSends.erase(iter);
411                    if (fxSends.empty()) {
412                        // destroy local render buffers
413                        if (pChannelLeft)  delete pChannelLeft;
414                        if (pChannelRight) delete pChannelRight;
415                        // fallback to render directly into AudioOutputDevice's buffers
416                        if (pEngine && pEngine->pAudioOutputDevice) {
417                            pChannelLeft  = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelLeft);
418                            pChannelRight = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelRight);
419                        } else { // we update the pointers later
420                            pChannelLeft  = NULL;
421                            pChannelRight = NULL;
422                        }
423                    }
424                    break;
425                }
426            }
427            if (pEngine) pEngine->Enable();
428        }
429    
430      /**      /**
431       *  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
432       *  voice for the given key.       *  voice for the given key. This method is meant for real time rendering,
433         *  that is an event will immediately be created with the current system
434         *  time as time stamp.
435       *       *
436       *  @param Key      - MIDI key number of the triggered key       *  @param Key      - MIDI key number of the triggered key
437       *  @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 442  namespace LinuxSampler { namespace gig {
442              event.Type                = Event::type_note_on;              event.Type                = Event::type_note_on;
443              event.Param.Note.Key      = Key;              event.Param.Note.Key      = Key;
444              event.Param.Note.Velocity = Velocity;              event.Param.Note.Velocity = Velocity;
445              event.pEngineChannel      = this;                          event.pEngineChannel      = this;
446                if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
447                else dmsg(1,("EngineChannel: Input event queue full!"));
448            }
449        }
450    
451        /**
452         *  Will be called by the MIDIIn Thread to let the audio thread trigger a new
453         *  voice for the given key. This method is meant for offline rendering
454         *  and / or for cases where the exact position of the event in the current
455         *  audio fragment is already known.
456         *
457         *  @param Key         - MIDI key number of the triggered key
458         *  @param Velocity    - MIDI velocity value of the triggered key
459         *  @param FragmentPos - sample point position in the current audio
460         *                       fragment to which this event belongs to
461         */
462        void EngineChannel::SendNoteOn(uint8_t Key, uint8_t Velocity, int32_t FragmentPos) {
463            if (FragmentPos < 0) {
464                dmsg(1,("EngineChannel::SendNoteOn(): negative FragmentPos! Seems MIDI driver is buggy!"));
465            }
466            else if (pEngine) {
467                Event event               = pEngine->pEventGenerator->CreateEvent(FragmentPos);
468                event.Type                = Event::type_note_on;
469                event.Param.Note.Key      = Key;
470                event.Param.Note.Velocity = Velocity;
471                event.pEngineChannel      = this;
472              if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);              if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
473              else dmsg(1,("EngineChannel: Input event queue full!"));              else dmsg(1,("EngineChannel: Input event queue full!"));
474          }          }
# Line 297  namespace LinuxSampler { namespace gig { Line 476  namespace LinuxSampler { namespace gig {
476    
477      /**      /**
478       *  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
479       *  voice(s) on the given key.       *  voice(s) on the given key. This method is meant for real time rendering,
480         *  that is an event will immediately be created with the current system
481         *  time as time stamp.
482       *       *
483       *  @param Key      - MIDI key number of the released key       *  @param Key      - MIDI key number of the released key
484       *  @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 496  namespace LinuxSampler { namespace gig {
496      }      }
497    
498      /**      /**
499         *  Will be called by the MIDIIn Thread to signal the audio thread to release
500         *  voice(s) on the given key. This method is meant for offline rendering
501         *  and / or for cases where the exact position of the event in the current
502         *  audio fragment is already known.
503         *
504         *  @param Key         - MIDI key number of the released key
505         *  @param Velocity    - MIDI release velocity value of the released key
506         *  @param FragmentPos - sample point position in the current audio
507         *                       fragment to which this event belongs to
508         */
509        void EngineChannel::SendNoteOff(uint8_t Key, uint8_t Velocity, int32_t FragmentPos) {
510            if (FragmentPos < 0) {
511                dmsg(1,("EngineChannel::SendNoteOff(): negative FragmentPos! Seems MIDI driver is buggy!"));
512            }
513            else if (pEngine) {
514                Event event               = pEngine->pEventGenerator->CreateEvent(FragmentPos);
515                event.Type                = Event::type_note_off;
516                event.Param.Note.Key      = Key;
517                event.Param.Note.Velocity = Velocity;
518                event.pEngineChannel      = this;
519                if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
520                else dmsg(1,("EngineChannel: Input event queue full!"));
521            }
522        }
523    
524        /**
525       *  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
526       *  the pitch value for all voices.       *  the pitch value for all voices. This method is meant for real time
527         *  rendering, that is an event will immediately be created with the
528         *  current system time as time stamp.
529       *       *
530       *  @param Pitch - MIDI pitch value (-8192 ... +8191)       *  @param Pitch - MIDI pitch value (-8192 ... +8191)
531       */       */
532      void EngineChannel::SendPitchbend(int Pitch) {      void EngineChannel::SendPitchbend(int Pitch) {
533          if (pEngine) {                  if (pEngine) {
534              Event event             = pEngine->pEventGenerator->CreateEvent();              Event event             = pEngine->pEventGenerator->CreateEvent();
535              event.Type              = Event::type_pitchbend;              event.Type              = Event::type_pitchbend;
536              event.Param.Pitch.Pitch = Pitch;              event.Param.Pitch.Pitch = Pitch;
# Line 332  namespace LinuxSampler { namespace gig { Line 541  namespace LinuxSampler { namespace gig {
541      }      }
542    
543      /**      /**
544         *  Will be called by the MIDIIn Thread to signal the audio thread to change
545         *  the pitch value for all voices. This method is meant for offline
546         *  rendering and / or for cases where the exact position of the event in
547         *  the current audio fragment is already known.
548         *
549         *  @param Pitch       - MIDI pitch value (-8192 ... +8191)
550         *  @param FragmentPos - sample point position in the current audio
551         *                       fragment to which this event belongs to
552         */
553        void EngineChannel::SendPitchbend(int Pitch, int32_t FragmentPos) {
554            if (FragmentPos < 0) {
555                dmsg(1,("EngineChannel::SendPitchBend(): negative FragmentPos! Seems MIDI driver is buggy!"));
556            }
557            else if (pEngine) {
558                Event event             = pEngine->pEventGenerator->CreateEvent(FragmentPos);
559                event.Type              = Event::type_pitchbend;
560                event.Param.Pitch.Pitch = Pitch;
561                event.pEngineChannel    = this;
562                if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
563                else dmsg(1,("EngineChannel: Input event queue full!"));
564            }
565        }
566    
567        /**
568       *  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
569       *  continuous controller value has changed.       *  continuous controller value has changed. This method is meant for real
570         *  time rendering, that is an event will immediately be created with the
571         *  current system time as time stamp.
572       *       *
573       *  @param Controller - MIDI controller number of the occured control change       *  @param Controller - MIDI controller number of the occured control change
574       *  @param Value      - value of the control change       *  @param Value      - value of the control change
# Line 350  namespace LinuxSampler { namespace gig { Line 585  namespace LinuxSampler { namespace gig {
585          }          }
586      }      }
587    
588        /**
589         *  Will be called by the MIDIIn Thread to signal the audio thread that a
590         *  continuous controller value has changed. This method is meant for
591         *  offline rendering and / or for cases where the exact position of the
592         *  event in the current audio fragment is already known.
593         *
594         *  @param Controller  - MIDI controller number of the occured control change
595         *  @param Value       - value of the control change
596         *  @param FragmentPos - sample point position in the current audio
597         *                       fragment to which this event belongs to
598         */
599        void EngineChannel::SendControlChange(uint8_t Controller, uint8_t Value, int32_t FragmentPos) {
600            if (FragmentPos < 0) {
601                dmsg(1,("EngineChannel::SendControlChange(): negative FragmentPos! Seems MIDI driver is buggy!"));
602            }
603            else if (pEngine) {
604                Event event               = pEngine->pEventGenerator->CreateEvent(FragmentPos);
605                event.Type                = Event::type_control_change;
606                event.Param.CC.Controller = Controller;
607                event.Param.CC.Value      = Value;
608                event.pEngineChannel      = this;
609                if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
610                else dmsg(1,("EngineChannel: Input event queue full!"));
611            }
612        }
613    
614        void EngineChannel::ClearEventLists() {
615            pEvents->clear();
616            // empty MIDI key specific event lists
617            {
618                RTList<uint>::Iterator iuiKey = pActiveKeys->first();
619                RTList<uint>::Iterator end    = pActiveKeys->end();
620                for(; iuiKey != end; ++iuiKey) {
621                    pMIDIKeyInfo[*iuiKey].pEvents->clear(); // free all events on the key
622                }
623            }
624        }
625    
626        void EngineChannel::ResetControllers() {
627            Pitch          = 0;
628            SustainPedal   = false;
629            SostenutoPedal = false;
630            GlobalVolume   = 1.0f;
631            MidiVolume     = 1.0;
632            GlobalPanLeft  = 1.0f;
633            GlobalPanRight = 1.0f;
634            GlobalTranspose = 0;
635            // set all MIDI controller values to zero
636            memset(ControllerTable, 0x00, 129);
637            // reset all FX Send levels
638            for (
639                std::vector<FxSend*>::iterator iter = fxSends.begin();
640                iter != fxSends.end(); iter++
641            ) {
642                (*iter)->Reset();
643            }
644        }
645    
646        /**
647         * Copy all events from the engine channel's input event queue buffer to
648         * the internal event list. This will be done at the beginning of each
649         * audio cycle (that is each RenderAudio() call) to distinguish all
650         * events which have to be processed in the current audio cycle. Each
651         * EngineChannel has it's own input event queue for the common channel
652         * specific events (like NoteOn, NoteOff and ControlChange events).
653         * Beside that, the engine also has a input event queue for global
654         * events (usually SysEx messages).
655         *
656         * @param Samples - number of sample points to be processed in the
657         *                  current audio cycle
658         */
659        void EngineChannel::ImportEvents(uint Samples) {
660            RingBuffer<Event,false>::NonVolatileReader eventQueueReader = pEventQueue->get_non_volatile_reader();
661            Event* pEvent;
662            while (true) {
663                // get next event from input event queue
664                if (!(pEvent = eventQueueReader.pop())) break;
665                // if younger event reached, ignore that and all subsequent ones for now
666                if (pEvent->FragmentPos() >= Samples) {
667                    eventQueueReader--;
668                    dmsg(2,("Younger Event, pos=%d ,Samples=%d!\n",pEvent->FragmentPos(),Samples));
669                    pEvent->ResetFragmentPos();
670                    break;
671                }
672                // copy event to internal event list
673                if (pEvents->poolIsEmpty()) {
674                    dmsg(1,("Event pool emtpy!\n"));
675                    break;
676                }
677                *pEvents->allocAppend() = *pEvent;
678            }
679            eventQueueReader.free(); // free all copied events from input queue
680        }
681    
682        void EngineChannel::RemoveAllFxSends() {
683            if (pEngine) pEngine->DisableAndLock();
684            if (!fxSends.empty()) { // free local render buffers
685                if (pChannelLeft) {
686                    delete pChannelLeft;
687                    if (pEngine && pEngine->pAudioOutputDevice) {
688                        // fallback to render directly to the AudioOutputDevice's buffer
689                        pChannelLeft = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelLeft);
690                    } else pChannelLeft = NULL;
691                }
692                if (pChannelRight) {
693                    delete pChannelRight;
694                    if (pEngine && pEngine->pAudioOutputDevice) {
695                        // fallback to render directly to the AudioOutputDevice's buffer
696                        pChannelRight = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelRight);
697                    } else pChannelRight = NULL;
698                }
699            }
700            for (int i = 0; i < fxSends.size(); i++) delete fxSends[i];
701            fxSends.clear();
702            if (pEngine) pEngine->Enable();
703        }
704    
705      float EngineChannel::Volume() {      float EngineChannel::Volume() {
706          return GlobalVolume;          return GlobalVolume;
707      }      }
708    
709      void EngineChannel::Volume(float f) {      void EngineChannel::Volume(float f) {
710          GlobalVolume = f;          GlobalVolume = f;
711            bStatusChanged = true; // status of engine channel has changed, so set notify flag
712      }      }
713    
714      uint EngineChannel::Channels() {      uint EngineChannel::Channels() {
# Line 376  namespace LinuxSampler { namespace gig { Line 729  namespace LinuxSampler { namespace gig {
729    
730      int EngineChannel::InstrumentStatus() {      int EngineChannel::InstrumentStatus() {
731          return InstrumentStat;          return InstrumentStat;
732      }          }
733    
734        String EngineChannel::EngineName() {
735            return LS_GIG_ENGINE_NAME;
736        }
737    
738  }} // namespace LinuxSampler::gig  }} // namespace LinuxSampler::gig
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