/[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 438 by persson, Wed Mar 9 22:12:15 2005 UTC revision 1108 by iliev, Thu Mar 22 20:39:04 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 22  Line 22 
22   ***************************************************************************/   ***************************************************************************/
23    
24  #include "EngineChannel.h"  #include "EngineChannel.h"
25    #include "../../network/lscpserver.h"
26    
27  namespace LinuxSampler { namespace gig {  namespace LinuxSampler { namespace gig {
28    
# Line 29  namespace LinuxSampler { namespace gig { Line 30  namespace LinuxSampler { namespace gig {
30          pMIDIKeyInfo = new midi_key_info_t[128];          pMIDIKeyInfo = new midi_key_info_t[128];
31          pEngine      = NULL;          pEngine      = NULL;
32          pInstrument  = NULL;          pInstrument  = NULL;
33          pEventQueue  = new RingBuffer<Event>(MAX_EVENTS_PER_FRAGMENT, 0);          pEvents      = NULL; // we allocate when we retrieve the right Engine object
34            pEventQueue  = new RingBuffer<Event,false>(CONFIG_MAX_EVENTS_PER_FRAGMENT, 0);
35          pActiveKeys  = new Pool<uint>(128);          pActiveKeys  = new Pool<uint>(128);
36          for (uint i = 0; i < 128; i++) {          for (uint i = 0; i < 128; i++) {
37              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 39  namespace LinuxSampler { namespace gig {
39              pMIDIKeyInfo[i].Active         = false;              pMIDIKeyInfo[i].Active         = false;
40              pMIDIKeyInfo[i].ReleaseTrigger = false;              pMIDIKeyInfo[i].ReleaseTrigger = false;
41              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
42                pMIDIKeyInfo[i].VoiceTheftsQueued = 0;
43              pMIDIKeyInfo[i].RoundRobinIndex = 0;              pMIDIKeyInfo[i].RoundRobinIndex = 0;
44          }          }
45          InstrumentIdx  = -1;          InstrumentIdx  = -1;
46          InstrumentStat = -1;          InstrumentStat = -1;
47            pChannelLeft  = NULL;
48            pChannelRight = NULL;
49          AudioDeviceChannelLeft  = -1;          AudioDeviceChannelLeft  = -1;
50          AudioDeviceChannelRight = -1;          AudioDeviceChannelRight = -1;
51            pMidiInputPort = NULL;
52            midiChannel = midi_chan_all;
53            ResetControllers();
54            SoloMode       = false;
55            PortamentoMode = false;
56            PortamentoTime = CONFIG_PORTAMENTO_TIME_DEFAULT;
57      }      }
58    
59      EngineChannel::~EngineChannel() {      EngineChannel::~EngineChannel() {
60            DisconnectAudioOutputDevice();
61          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;  
             }  
         }  
62          if (pEventQueue) delete pEventQueue;          if (pEventQueue) delete pEventQueue;
63          if (pActiveKeys) delete pActiveKeys;          if (pActiveKeys) delete pActiveKeys;
64          if (pMIDIKeyInfo) delete[] pMIDIKeyInfo;          if (pMIDIKeyInfo) delete[] pMIDIKeyInfo;
65            RemoveAllFxSends();
66        }
67    
68        /**
69         * Implementation of virtual method from abstract EngineChannel interface.
70         * This method will periodically be polled (e.g. by the LSCP server) to
71         * check if some engine channel parameter has changed since the last
72         * StatusChanged() call.
73         *
74         * This method can also be used to mark the engine channel as changed
75         * from outside, e.g. by a MIDI input device. The optional argument
76         * \a nNewStatus can be used for this.
77         *
78         * TODO: This "poll method" is just a lazy solution and might be
79         *       replaced in future.
80         * @param bNewStatus - (optional, default: false) sets the new status flag
81         * @returns true if engine channel status has changed since last
82         *          StatusChanged() call
83         */
84        bool EngineChannel::StatusChanged(bool bNewStatus) {
85            bool b = bStatusChanged;
86            bStatusChanged = bNewStatus;
87            return b;
88        }
89    
90        void EngineChannel::Reset() {
91            if (pEngine) pEngine->DisableAndLock();
92            ResetInternal();
93            ResetControllers();
94            if (pEngine) {
95                pEngine->Enable();
96                pEngine->Reset();
97            }
98      }      }
99    
100      /**      /**
101       * This method is not thread safe!       * This method is not thread safe!
102       */       */
103      void EngineChannel::ResetInternal() {      void EngineChannel::ResetInternal() {
         Pitch               = 0;  
         SustainPedal        = false;  
         GlobalVolume        = 1.0;  
         GlobalPanLeft       = 1.0f;  
         GlobalPanRight      = 1.0f;  
104          CurrentKeyDimension = 0;          CurrentKeyDimension = 0;
105    
         // set all MIDI controller values to zero  
         memset(ControllerTable, 0x00, 128);  
   
         // reset voice stealing parameters  
         itLastStolenVoice = RTList<Voice>::Iterator();  
         iuiLastStolenKey  = RTList<uint>::Iterator();  
   
106          // reset key info          // reset key info
107          for (uint i = 0; i < 128; i++) {          for (uint i = 0; i < 128; i++) {
108              if (pMIDIKeyInfo[i].pActiveVoices)              if (pMIDIKeyInfo[i].pActiveVoices)
# Line 90  namespace LinuxSampler { namespace gig { Line 113  namespace LinuxSampler { namespace gig {
113              pMIDIKeyInfo[i].Active         = false;              pMIDIKeyInfo[i].Active         = false;
114              pMIDIKeyInfo[i].ReleaseTrigger = false;              pMIDIKeyInfo[i].ReleaseTrigger = false;
115              pMIDIKeyInfo[i].itSelf         = Pool<uint>::Iterator();              pMIDIKeyInfo[i].itSelf         = Pool<uint>::Iterator();
116                pMIDIKeyInfo[i].VoiceTheftsQueued = 0;
117          }          }
118            SoloKey       = -1;    // no solo key active yet
119            PortamentoPos = -1.0f; // no portamento active yet
120    
121          // reset all key groups          // reset all key groups
122          std::map<uint,uint*>::iterator iter = ActiveKeyGroups.begin();          std::map<uint,uint*>::iterator iter = ActiveKeyGroups.begin();
# Line 103  namespace LinuxSampler { namespace gig { Line 129  namespace LinuxSampler { namespace gig {
129          pEventQueue->init();          pEventQueue->init();
130    
131          if (pEngine) pEngine->ResetInternal();          if (pEngine) pEngine->ResetInternal();
132    
133            // status of engine channel has changed, so set notify flag
134            bStatusChanged = true;
135      }      }
136    
137      LinuxSampler::Engine* EngineChannel::GetEngine() {      LinuxSampler::Engine* EngineChannel::GetEngine() {
# Line 135  namespace LinuxSampler { namespace gig { Line 164  namespace LinuxSampler { namespace gig {
164       * @see PrepareLoadInstrument()       * @see PrepareLoadInstrument()
165       */       */
166      void EngineChannel::LoadInstrument() {      void EngineChannel::LoadInstrument() {
167            ::gig::Instrument* oldInstrument = pInstrument;
         if (pEngine) pEngine->DisableAndLock();  
   
         ResetInternal();  
168    
169          // free old instrument          // free old instrument
170          if (pInstrument) {          if (oldInstrument) {
171              // give old instrument back to instrument manager              if (pEngine) {
172              Engine::instruments.HandBack(pInstrument, this);                  // make sure we don't trigger any new notes with the
173                    // old instrument
174                    ::gig::DimensionRegion** dimRegionsInUse = pEngine->ChangeInstrument(this, 0);
175    
176                    // give old instrument back to instrument manager, but
177                    // keep the dimension regions and samples that are in
178                    // use
179                    Engine::instruments.HandBackInstrument(oldInstrument, this, dimRegionsInUse);
180                } else {
181                    Engine::instruments.HandBack(oldInstrument, this);
182                }
183          }          }
184    
185          // delete all key groups          // delete all key groups
186          ActiveKeyGroups.clear();          ActiveKeyGroups.clear();
187    
188          // request gig instrument from instrument manager          // request gig instrument from instrument manager
189            ::gig::Instrument* newInstrument;
190          try {          try {
191              instrument_id_t instrid;              InstrumentManager::instrument_id_t instrid;
192              instrid.FileName    = InstrumentFile;              instrid.FileName  = InstrumentFile;
193              instrid.iInstrument = InstrumentIdx;              instrid.Index     = InstrumentIdx;
194              pInstrument = Engine::instruments.Borrow(instrid, this);              newInstrument = Engine::instruments.Borrow(instrid, this);
195              if (!pInstrument) {              if (!newInstrument) {
196                  InstrumentStat = -1;                  throw InstrumentResourceManagerException("resource was not created");
                 dmsg(1,("no instrument loaded!!!\n"));  
                 exit(EXIT_FAILURE);  
197              }              }
198          }          }
199          catch (RIFF::Exception e) {          catch (RIFF::Exception e) {
200              InstrumentStat = -2;              InstrumentStat = -2;
201              String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message;              String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message;
202              throw LinuxSamplerException(msg);              throw Exception(msg);
203          }          }
204          catch (InstrumentResourceManagerException e) {          catch (InstrumentResourceManagerException e) {
205              InstrumentStat = -3;              InstrumentStat = -3;
206              String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message();              String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message();
207              throw LinuxSamplerException(msg);              throw Exception(msg);
208          }          }
209          catch (...) {          catch (...) {
210              InstrumentStat = -4;              InstrumentStat = -4;
211              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.");
212          }          }
213    
214          // rebuild ActiveKeyGroups map with key groups of current instrument          // rebuild ActiveKeyGroups map with key groups of current instrument
215          for (::gig::Region* pRegion = pInstrument->GetFirstRegion(); pRegion; pRegion = pInstrument->GetNextRegion())          for (::gig::Region* pRegion = newInstrument->GetFirstRegion(); pRegion; pRegion = newInstrument->GetNextRegion())
216              if (pRegion->KeyGroup) ActiveKeyGroups[pRegion->KeyGroup] = NULL;              if (pRegion->KeyGroup) ActiveKeyGroups[pRegion->KeyGroup] = NULL;
217    
218          InstrumentIdxName = pInstrument->pInfo->Name;          InstrumentIdxName = newInstrument->pInfo->Name;
219          InstrumentStat = 100;          InstrumentStat = 100;
220    
221          // inform audio driver for the need of two channels          if (pEngine) pEngine->ChangeInstrument(this, newInstrument);
222          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();  
223      }      }
224    
225      /**      /**
226       * Will be called by the InstrumentResourceManager when the instrument       * Will be called by the InstrumentResourceManager when the instrument
227       * 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,
228       * can stop playback before that happens.       * so we can stop playback before that happens.
229       */       */
230      void EngineChannel::ResourceToBeUpdated(::gig::Instrument* pResource, void*& pUpdateArg) {      void EngineChannel::ResourceToBeUpdated(::gig::Instrument* pResource, void*& pUpdateArg) {
231          dmsg(3,("gig::Engine: Received instrument update message.\n"));          dmsg(3,("gig::Engine: Received instrument update message.\n"));
# Line 215  namespace LinuxSampler { namespace gig { Line 241  namespace LinuxSampler { namespace gig {
241      void EngineChannel::ResourceUpdated(::gig::Instrument* pOldResource, ::gig::Instrument* pNewResource, void* pUpdateArg) {      void EngineChannel::ResourceUpdated(::gig::Instrument* pOldResource, ::gig::Instrument* pNewResource, void* pUpdateArg) {
242          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())
243          if (pEngine) pEngine->Enable();          if (pEngine) pEngine->Enable();
244            bStatusChanged = true; // status of engine has changed, so set notify flag
245        }
246    
247        /**
248         * Will be called by the InstrumentResourceManager on progress changes
249         * while loading or realoading an instrument for this EngineChannel.
250         *
251         * @param fProgress - current progress as value between 0.0 and 1.0
252         */
253        void EngineChannel::OnResourceProgress(float fProgress) {
254            this->InstrumentStat = int(fProgress * 100.0f);
255            dmsg(7,("gig::EngineChannel: progress %d%", InstrumentStat));
256            bStatusChanged = true; // status of engine has changed, so set notify flag
257      }      }
258    
259      void EngineChannel::Connect(AudioOutputDevice* pAudioOut) {      void EngineChannel::Connect(AudioOutputDevice* pAudioOut) {
260          if (pEngine && pEngine->pAudioOutputDevice != pAudioOut) {          if (pEngine) {
261                if (pEngine->pAudioOutputDevice == pAudioOut) return;
262              DisconnectAudioOutputDevice();              DisconnectAudioOutputDevice();
263          }          }
264          pEngine = Engine::AcquireEngine(this, pAudioOut);          pEngine = Engine::AcquireEngine(this, pAudioOut);
265          ResetInternal();          ResetInternal();
266            pEvents = new RTList<Event>(pEngine->pEventPool);
267          for (uint i = 0; i < 128; i++) {          for (uint i = 0; i < 128; i++) {
268              pMIDIKeyInfo[i].pActiveVoices = new RTList<Voice>(pEngine->pVoicePool);              pMIDIKeyInfo[i].pActiveVoices = new RTList<Voice>(pEngine->pVoicePool);
269              pMIDIKeyInfo[i].pEvents       = new RTList<Event>(pEngine->pEventPool);              pMIDIKeyInfo[i].pEvents       = new RTList<Event>(pEngine->pEventPool);
270          }          }
271          AudioDeviceChannelLeft  = 0;          AudioDeviceChannelLeft  = 0;
272          AudioDeviceChannelRight = 1;          AudioDeviceChannelRight = 1;
273          pOutputLeft             = pAudioOut->Channel(0)->Buffer();          if (fxSends.empty()) { // render directly into the AudioDevice's output buffers
274          pOutputRight            = pAudioOut->Channel(1)->Buffer();              pChannelLeft  = pAudioOut->Channel(AudioDeviceChannelLeft);
275                pChannelRight = pAudioOut->Channel(AudioDeviceChannelRight);
276            } else { // use local buffers for rendering and copy later
277                // ensure the local buffers have the correct size
278                if (pChannelLeft)  delete pChannelLeft;
279                if (pChannelRight) delete pChannelRight;
280                pChannelLeft  = new AudioChannel(0, pAudioOut->MaxSamplesPerCycle());
281                pChannelRight = new AudioChannel(1, pAudioOut->MaxSamplesPerCycle());
282            }
283            if (pEngine->EngineDisabled.GetUnsafe()) pEngine->Enable();
284            MidiInputPort::AddSysexListener(pEngine);
285      }      }
286    
287      void EngineChannel::DisconnectAudioOutputDevice() {      void EngineChannel::DisconnectAudioOutputDevice() {
288          if (pEngine) { // if clause to prevent disconnect loops          if (pEngine) { // if clause to prevent disconnect loops
289              ResetInternal();              ResetInternal();
290                if (pEvents) {
291                    delete pEvents;
292                    pEvents = NULL;
293                }
294              for (uint i = 0; i < 128; i++) {              for (uint i = 0; i < 128; i++) {
295                  if (pMIDIKeyInfo[i].pActiveVoices) {                  if (pMIDIKeyInfo[i].pActiveVoices) {
296                      delete pMIDIKeyInfo[i].pActiveVoices;                      delete pMIDIKeyInfo[i].pActiveVoices;
# Line 252  namespace LinuxSampler { namespace gig { Line 307  namespace LinuxSampler { namespace gig {
307              Engine::FreeEngine(this, oldAudioDevice);              Engine::FreeEngine(this, oldAudioDevice);
308              AudioDeviceChannelLeft  = -1;              AudioDeviceChannelLeft  = -1;
309              AudioDeviceChannelRight = -1;              AudioDeviceChannelRight = -1;
310                if (!fxSends.empty()) { // free the local rendering buffers
311                    if (pChannelLeft)  delete pChannelLeft;
312                    if (pChannelRight) delete pChannelRight;
313                }
314                pChannelLeft  = NULL;
315                pChannelRight = NULL;
316          }          }
317      }      }
318    
319        AudioOutputDevice* EngineChannel::GetAudioOutputDevice() {
320            return (pEngine) ? pEngine->pAudioOutputDevice : NULL;
321        }
322    
323      void EngineChannel::SetOutputChannel(uint EngineAudioChannel, uint AudioDeviceChannel) {      void EngineChannel::SetOutputChannel(uint EngineAudioChannel, uint AudioDeviceChannel) {
324          if (!pEngine || !pEngine->pAudioOutputDevice) throw AudioOutputException("No audio output device connected yet.");          if (!pEngine || !pEngine->pAudioOutputDevice) throw AudioOutputException("No audio output device connected yet.");
325    
# Line 262  namespace LinuxSampler { namespace gig { Line 327  namespace LinuxSampler { namespace gig {
327          if (!pChannel) throw AudioOutputException("Invalid audio output device channel " + ToString(AudioDeviceChannel));          if (!pChannel) throw AudioOutputException("Invalid audio output device channel " + ToString(AudioDeviceChannel));
328          switch (EngineAudioChannel) {          switch (EngineAudioChannel) {
329              case 0: // left output channel              case 0: // left output channel
330                  pOutputLeft = pChannel->Buffer();                  if (fxSends.empty()) pChannelLeft = pChannel;
331                  AudioDeviceChannelLeft = AudioDeviceChannel;                  AudioDeviceChannelLeft = AudioDeviceChannel;
332                  break;                  break;
333              case 1: // right output channel              case 1: // right output channel
334                  pOutputRight = pChannel->Buffer();                  if (fxSends.empty()) pChannelRight = pChannel;
335                  AudioDeviceChannelRight = AudioDeviceChannel;                  AudioDeviceChannelRight = AudioDeviceChannel;
336                  break;                  break;
337              default:              default:
# Line 285  namespace LinuxSampler { namespace gig { Line 350  namespace LinuxSampler { namespace gig {
350          }          }
351      }      }
352    
353        void EngineChannel::Connect(MidiInputPort* pMidiPort, midi_chan_t MidiChannel) {
354            if (!pMidiPort || pMidiPort == this->pMidiInputPort) return;
355            DisconnectMidiInputPort();
356            this->pMidiInputPort = pMidiPort;
357            this->midiChannel    = MidiChannel;
358            pMidiPort->Connect(this, MidiChannel);
359        }
360    
361        void EngineChannel::DisconnectMidiInputPort() {
362            MidiInputPort* pOldPort = this->pMidiInputPort;
363            this->pMidiInputPort = NULL;
364            if (pOldPort) pOldPort->Disconnect(this);
365        }
366    
367        MidiInputPort* EngineChannel::GetMidiInputPort() {
368            return pMidiInputPort;
369        }
370    
371        midi_chan_t EngineChannel::MidiChannel() {
372            return midiChannel;
373        }
374    
375        FxSend* EngineChannel::AddFxSend(uint8_t MidiCtrl, String Name) throw (Exception) {
376            if (pEngine) pEngine->DisableAndLock();
377            FxSend* pFxSend = new FxSend(this, MidiCtrl, Name);
378            if (fxSends.empty()) {
379                if (pEngine && pEngine->pAudioOutputDevice) {
380                    AudioOutputDevice* pDevice = pEngine->pAudioOutputDevice;
381                    // create local render buffers
382                    pChannelLeft  = new AudioChannel(0, pDevice->MaxSamplesPerCycle());
383                    pChannelRight = new AudioChannel(1, pDevice->MaxSamplesPerCycle());
384                } else {
385                    // postpone local render buffer creation until audio device is assigned
386                    pChannelLeft  = NULL;
387                    pChannelRight = NULL;
388                }
389            }
390            fxSends.push_back(pFxSend);
391            if (pEngine) pEngine->Enable();
392            LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_fx_send_count, iSamplerChannelIndex, GetFxSendCount()));
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            LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_fx_send_count, iSamplerChannelIndex, GetFxSendCount()));
431        }
432    
433      /**      /**
434       *  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
435       *  voice for the given key.       *  voice for the given key. This method is meant for real time rendering,
436         *  that is an event will immediately be created with the current system
437         *  time as time stamp.
438       *       *
439       *  @param Key      - MIDI key number of the triggered key       *  @param Key      - MIDI key number of the triggered key
440       *  @param Velocity - MIDI velocity value of the triggered key       *  @param Velocity - MIDI velocity value of the triggered key
# Line 305  namespace LinuxSampler { namespace gig { Line 452  namespace LinuxSampler { namespace gig {
452      }      }
453    
454      /**      /**
455         *  Will be called by the MIDIIn Thread to let the audio thread trigger a new
456         *  voice for the given key. This method is meant for offline rendering
457         *  and / or for cases where the exact position of the event in the current
458         *  audio fragment is already known.
459         *
460         *  @param Key         - MIDI key number of the triggered key
461         *  @param Velocity    - MIDI velocity value of the triggered key
462         *  @param FragmentPos - sample point position in the current audio
463         *                       fragment to which this event belongs to
464         */
465        void EngineChannel::SendNoteOn(uint8_t Key, uint8_t Velocity, int32_t FragmentPos) {
466            if (FragmentPos < 0) {
467                dmsg(1,("EngineChannel::SendNoteOn(): negative FragmentPos! Seems MIDI driver is buggy!"));
468            }
469            else if (pEngine) {
470                Event event               = pEngine->pEventGenerator->CreateEvent(FragmentPos);
471                event.Type                = Event::type_note_on;
472                event.Param.Note.Key      = Key;
473                event.Param.Note.Velocity = Velocity;
474                event.pEngineChannel      = this;
475                if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
476                else dmsg(1,("EngineChannel: Input event queue full!"));
477            }
478        }
479    
480        /**
481       *  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
482       *  voice(s) on the given key.       *  voice(s) on the given key. This method is meant for real time rendering,
483         *  that is an event will immediately be created with the current system
484         *  time as time stamp.
485       *       *
486       *  @param Key      - MIDI key number of the released key       *  @param Key      - MIDI key number of the released key
487       *  @param Velocity - MIDI release velocity value of the released key       *  @param Velocity - MIDI release velocity value of the released key
# Line 324  namespace LinuxSampler { namespace gig { Line 499  namespace LinuxSampler { namespace gig {
499      }      }
500    
501      /**      /**
502         *  Will be called by the MIDIIn Thread to signal the audio thread to release
503         *  voice(s) on the given key. This method is meant for offline rendering
504         *  and / or for cases where the exact position of the event in the current
505         *  audio fragment is already known.
506         *
507         *  @param Key         - MIDI key number of the released key
508         *  @param Velocity    - MIDI release velocity value of the released key
509         *  @param FragmentPos - sample point position in the current audio
510         *                       fragment to which this event belongs to
511         */
512        void EngineChannel::SendNoteOff(uint8_t Key, uint8_t Velocity, int32_t FragmentPos) {
513            if (FragmentPos < 0) {
514                dmsg(1,("EngineChannel::SendNoteOff(): negative FragmentPos! Seems MIDI driver is buggy!"));
515            }
516            else if (pEngine) {
517                Event event               = pEngine->pEventGenerator->CreateEvent(FragmentPos);
518                event.Type                = Event::type_note_off;
519                event.Param.Note.Key      = Key;
520                event.Param.Note.Velocity = Velocity;
521                event.pEngineChannel      = this;
522                if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
523                else dmsg(1,("EngineChannel: Input event queue full!"));
524            }
525        }
526    
527        /**
528       *  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
529       *  the pitch value for all voices.       *  the pitch value for all voices. This method is meant for real time
530         *  rendering, that is an event will immediately be created with the
531         *  current system time as time stamp.
532       *       *
533       *  @param Pitch - MIDI pitch value (-8192 ... +8191)       *  @param Pitch - MIDI pitch value (-8192 ... +8191)
534       */       */
# Line 341  namespace LinuxSampler { namespace gig { Line 544  namespace LinuxSampler { namespace gig {
544      }      }
545    
546      /**      /**
547         *  Will be called by the MIDIIn Thread to signal the audio thread to change
548         *  the pitch value for all voices. This method is meant for offline
549         *  rendering and / or for cases where the exact position of the event in
550         *  the current audio fragment is already known.
551         *
552         *  @param Pitch       - MIDI pitch value (-8192 ... +8191)
553         *  @param FragmentPos - sample point position in the current audio
554         *                       fragment to which this event belongs to
555         */
556        void EngineChannel::SendPitchbend(int Pitch, int32_t FragmentPos) {
557            if (FragmentPos < 0) {
558                dmsg(1,("EngineChannel::SendPitchBend(): negative FragmentPos! Seems MIDI driver is buggy!"));
559            }
560            else if (pEngine) {
561                Event event             = pEngine->pEventGenerator->CreateEvent(FragmentPos);
562                event.Type              = Event::type_pitchbend;
563                event.Param.Pitch.Pitch = Pitch;
564                event.pEngineChannel    = this;
565                if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
566                else dmsg(1,("EngineChannel: Input event queue full!"));
567            }
568        }
569    
570        /**
571       *  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
572       *  continuous controller value has changed.       *  continuous controller value has changed. This method is meant for real
573         *  time rendering, that is an event will immediately be created with the
574         *  current system time as time stamp.
575       *       *
576       *  @param Controller - MIDI controller number of the occured control change       *  @param Controller - MIDI controller number of the occured control change
577       *  @param Value      - value of the control change       *  @param Value      - value of the control change
# Line 359  namespace LinuxSampler { namespace gig { Line 588  namespace LinuxSampler { namespace gig {
588          }          }
589      }      }
590    
591        /**
592         *  Will be called by the MIDIIn Thread to signal the audio thread that a
593         *  continuous controller value has changed. This method is meant for
594         *  offline rendering and / or for cases where the exact position of the
595         *  event in the current audio fragment is already known.
596         *
597         *  @param Controller  - MIDI controller number of the occured control change
598         *  @param Value       - value of the control change
599         *  @param FragmentPos - sample point position in the current audio
600         *                       fragment to which this event belongs to
601         */
602        void EngineChannel::SendControlChange(uint8_t Controller, uint8_t Value, int32_t FragmentPos) {
603            if (FragmentPos < 0) {
604                dmsg(1,("EngineChannel::SendControlChange(): negative FragmentPos! Seems MIDI driver is buggy!"));
605            }
606            else if (pEngine) {
607                Event event               = pEngine->pEventGenerator->CreateEvent(FragmentPos);
608                event.Type                = Event::type_control_change;
609                event.Param.CC.Controller = Controller;
610                event.Param.CC.Value      = Value;
611                event.pEngineChannel      = this;
612                if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
613                else dmsg(1,("EngineChannel: Input event queue full!"));
614            }
615        }
616    
617        void EngineChannel::ClearEventLists() {
618            pEvents->clear();
619            // empty MIDI key specific event lists
620            {
621                RTList<uint>::Iterator iuiKey = pActiveKeys->first();
622                RTList<uint>::Iterator end    = pActiveKeys->end();
623                for(; iuiKey != end; ++iuiKey) {
624                    pMIDIKeyInfo[*iuiKey].pEvents->clear(); // free all events on the key
625                }
626            }
627        }
628    
629        void EngineChannel::ResetControllers() {
630            Pitch          = 0;
631            SustainPedal   = false;
632            SostenutoPedal = false;
633            GlobalVolume   = 1.0f;
634            MidiVolume     = 1.0;
635            GlobalPanLeft  = 1.0f;
636            GlobalPanRight = 1.0f;
637            GlobalTranspose = 0;
638            // set all MIDI controller values to zero
639            memset(ControllerTable, 0x00, 129);
640            // reset all FX Send levels
641            for (
642                std::vector<FxSend*>::iterator iter = fxSends.begin();
643                iter != fxSends.end(); iter++
644            ) {
645                (*iter)->Reset();
646            }
647        }
648    
649        /**
650         * Copy all events from the engine channel's input event queue buffer to
651         * the internal event list. This will be done at the beginning of each
652         * audio cycle (that is each RenderAudio() call) to distinguish all
653         * events which have to be processed in the current audio cycle. Each
654         * EngineChannel has it's own input event queue for the common channel
655         * specific events (like NoteOn, NoteOff and ControlChange events).
656         * Beside that, the engine also has a input event queue for global
657         * events (usually SysEx messages).
658         *
659         * @param Samples - number of sample points to be processed in the
660         *                  current audio cycle
661         */
662        void EngineChannel::ImportEvents(uint Samples) {
663            RingBuffer<Event,false>::NonVolatileReader eventQueueReader = pEventQueue->get_non_volatile_reader();
664            Event* pEvent;
665            while (true) {
666                // get next event from input event queue
667                if (!(pEvent = eventQueueReader.pop())) break;
668                // if younger event reached, ignore that and all subsequent ones for now
669                if (pEvent->FragmentPos() >= Samples) {
670                    eventQueueReader--;
671                    dmsg(2,("Younger Event, pos=%d ,Samples=%d!\n",pEvent->FragmentPos(),Samples));
672                    pEvent->ResetFragmentPos();
673                    break;
674                }
675                // copy event to internal event list
676                if (pEvents->poolIsEmpty()) {
677                    dmsg(1,("Event pool emtpy!\n"));
678                    break;
679                }
680                *pEvents->allocAppend() = *pEvent;
681            }
682            eventQueueReader.free(); // free all copied events from input queue
683        }
684    
685        void EngineChannel::RemoveAllFxSends() {
686            if (pEngine) pEngine->DisableAndLock();
687            if (!fxSends.empty()) { // free local render buffers
688                if (pChannelLeft) {
689                    delete pChannelLeft;
690                    if (pEngine && pEngine->pAudioOutputDevice) {
691                        // fallback to render directly to the AudioOutputDevice's buffer
692                        pChannelLeft = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelLeft);
693                    } else pChannelLeft = NULL;
694                }
695                if (pChannelRight) {
696                    delete pChannelRight;
697                    if (pEngine && pEngine->pAudioOutputDevice) {
698                        // fallback to render directly to the AudioOutputDevice's buffer
699                        pChannelRight = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelRight);
700                    } else pChannelRight = NULL;
701                }
702            }
703            for (int i = 0; i < fxSends.size(); i++) delete fxSends[i];
704            fxSends.clear();
705            if (pEngine) pEngine->Enable();
706        }
707    
708      float EngineChannel::Volume() {      float EngineChannel::Volume() {
709          return GlobalVolume;          return GlobalVolume;
710      }      }
711    
712      void EngineChannel::Volume(float f) {      void EngineChannel::Volume(float f) {
713          GlobalVolume = f;          GlobalVolume = f;
714            bStatusChanged = true; // status of engine channel has changed, so set notify flag
715      }      }
716    
717      uint EngineChannel::Channels() {      uint EngineChannel::Channels() {
# Line 387  namespace LinuxSampler { namespace gig { Line 734  namespace LinuxSampler { namespace gig {
734          return InstrumentStat;          return InstrumentStat;
735      }      }
736    
737        String EngineChannel::EngineName() {
738            return LS_GIG_ENGINE_NAME;
739        }
740    
741  }} // namespace LinuxSampler::gig  }} // namespace LinuxSampler::gig
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