/[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 1847 by iliev, Fri Feb 27 17:12:40 2009 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 - 2009 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 {      #include "../../common/global_private.h"
27    #include "../../Sampler.h"
28    
29      EngineChannel::EngineChannel() {  namespace LinuxSampler { namespace gig {
30    
31        EngineChannel::EngineChannel() :
32            InstrumentChangeCommandReader(InstrumentChangeCommand),
33            virtualMidiDevicesReader_AudioThread(virtualMidiDevices),
34            virtualMidiDevicesReader_MidiThread(virtualMidiDevices)
35        {
36          pMIDIKeyInfo = new midi_key_info_t[128];          pMIDIKeyInfo = new midi_key_info_t[128];
37          pEngine      = NULL;          pEngine      = NULL;
38          pInstrument  = NULL;          pInstrument  = NULL;
39          pEventQueue  = new RingBuffer<Event>(MAX_EVENTS_PER_FRAGMENT, 0);                  pEvents      = NULL; // we allocate when we retrieve the right Engine object
40            pEventQueue  = new RingBuffer<Event,false>(CONFIG_MAX_EVENTS_PER_FRAGMENT, 0);
41          pActiveKeys  = new Pool<uint>(128);          pActiveKeys  = new Pool<uint>(128);
42          for (uint i = 0; i < 128; i++) {          for (uint i = 0; i < 128; i++) {
43              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 45  namespace LinuxSampler { namespace gig {
45              pMIDIKeyInfo[i].Active         = false;              pMIDIKeyInfo[i].Active         = false;
46              pMIDIKeyInfo[i].ReleaseTrigger = false;              pMIDIKeyInfo[i].ReleaseTrigger = false;
47              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
48                pMIDIKeyInfo[i].VoiceTheftsQueued = 0;
49                pMIDIKeyInfo[i].RoundRobinIndex = 0;
50          }          }
51          InstrumentIdx  = -1;          InstrumentIdx  = -1;
52          InstrumentStat = -1;          InstrumentStat = -1;
53            pChannelLeft  = NULL;
54            pChannelRight = NULL;
55          AudioDeviceChannelLeft  = -1;          AudioDeviceChannelLeft  = -1;
56          AudioDeviceChannelRight = -1;          AudioDeviceChannelRight = -1;
57            pMidiInputPort = NULL;
58            midiChannel = midi_chan_all;
59            ResetControllers();
60            SoloMode       = false;
61            PortamentoMode = false;
62            PortamentoTime = CONFIG_PORTAMENTO_TIME_DEFAULT;
63    
64            // reset the instrument change command struct (need to be done
65            // twice, as it is double buffered)
66            {
67                instrument_change_command_t& cmd = InstrumentChangeCommand.GetConfigForUpdate();
68                cmd.pDimRegionsInUse = NULL;
69                cmd.pInstrument = NULL;
70                cmd.bChangeInstrument = false;
71            }
72            {
73                instrument_change_command_t& cmd = InstrumentChangeCommand.SwitchConfig();
74                cmd.pDimRegionsInUse = NULL;
75                cmd.pInstrument = NULL;
76                cmd.bChangeInstrument = false;
77            }
78      }      }
79    
80      EngineChannel::~EngineChannel() {      EngineChannel::~EngineChannel() {
81          if (pInstrument) Engine::instruments.HandBack(pInstrument, this);          DisconnectAudioOutputDevice();
82          for (uint i = 0; i < 128; i++) {  
83              if (pMIDIKeyInfo[i].pActiveVoices) {          // In case the channel was removed before the instrument was
84                  pMIDIKeyInfo[i].pActiveVoices->clear();          // fully loaded, try to give back instrument again (see bug #113)
85                  delete pMIDIKeyInfo[i].pActiveVoices;          instrument_change_command_t& cmd = ChangeInstrument(NULL);
86              }          if (cmd.pInstrument) {
87              if (pMIDIKeyInfo[i].pEvents) {                  Engine::instruments.HandBack(cmd.pInstrument, this);
                 pMIDIKeyInfo[i].pEvents->clear();  
                 delete pMIDIKeyInfo[i].pEvents;  
             }  
88          }          }
89            ///////
90    
91          if (pEventQueue) delete pEventQueue;          if (pEventQueue) delete pEventQueue;
92          if (pActiveKeys) delete pActiveKeys;          if (pActiveKeys) delete pActiveKeys;
93          if (pMIDIKeyInfo) delete[] pMIDIKeyInfo;          if (pMIDIKeyInfo) delete[] pMIDIKeyInfo;
94            RemoveAllFxSends();
95        }
96    
97        /**
98         * Implementation of virtual method from abstract EngineChannel interface.
99         * This method will periodically be polled (e.g. by the LSCP server) to
100         * check if some engine channel parameter has changed since the last
101         * StatusChanged() call.
102         *
103         * This method can also be used to mark the engine channel as changed
104         * from outside, e.g. by a MIDI input device. The optional argument
105         * \a nNewStatus can be used for this.
106         *
107         * TODO: This "poll method" is just a lazy solution and might be
108         *       replaced in future.
109         * @param bNewStatus - (optional, default: false) sets the new status flag
110         * @returns true if engine channel status has changed since last
111         *          StatusChanged() call
112         */
113        bool EngineChannel::StatusChanged(bool bNewStatus) {
114            bool b = bStatusChanged;
115            bStatusChanged = bNewStatus;
116            return b;
117        }
118    
119        void EngineChannel::Reset() {
120            if (pEngine) pEngine->DisableAndLock();
121            ResetInternal();
122            ResetControllers();
123            if (pEngine) {
124                pEngine->Enable();
125                pEngine->Reset();
126            }
127      }      }
128    
129      /**      /**
130       * This method is not thread safe!       * This method is not thread safe!
131       */       */
132      void EngineChannel::ResetInternal() {      void EngineChannel::ResetInternal() {
         Pitch               = 0;  
         SustainPedal        = false;  
         GlobalVolume        = 1.0;  
133          CurrentKeyDimension = 0;          CurrentKeyDimension = 0;
134    
         // set all MIDI controller values to zero  
         memset(ControllerTable, 0x00, 128);  
   
         // reset voice stealing parameters  
         itLastStolenVoice = RTList<Voice>::Iterator();  
         iuiLastStolenKey  = RTList<uint>::Iterator();  
   
135          // reset key info          // reset key info
136          for (uint i = 0; i < 128; i++) {          for (uint i = 0; i < 128; i++) {
137              if (pMIDIKeyInfo[i].pActiveVoices)              if (pMIDIKeyInfo[i].pActiveVoices)
# Line 87  namespace LinuxSampler { namespace gig { Line 142  namespace LinuxSampler { namespace gig {
142              pMIDIKeyInfo[i].Active         = false;              pMIDIKeyInfo[i].Active         = false;
143              pMIDIKeyInfo[i].ReleaseTrigger = false;              pMIDIKeyInfo[i].ReleaseTrigger = false;
144              pMIDIKeyInfo[i].itSelf         = Pool<uint>::Iterator();              pMIDIKeyInfo[i].itSelf         = Pool<uint>::Iterator();
145                pMIDIKeyInfo[i].VoiceTheftsQueued = 0;
146          }          }
147            SoloKey       = -1;    // no solo key active yet
148            PortamentoPos = -1.0f; // no portamento active yet
149    
150          // reset all key groups          // reset all key groups
151          std::map<uint,uint*>::iterator iter = ActiveKeyGroups.begin();          std::map<uint,uint*>::iterator iter = ActiveKeyGroups.begin();
# Line 100  namespace LinuxSampler { namespace gig { Line 158  namespace LinuxSampler { namespace gig {
158          pEventQueue->init();          pEventQueue->init();
159    
160          if (pEngine) pEngine->ResetInternal();          if (pEngine) pEngine->ResetInternal();
161    
162            // status of engine channel has changed, so set notify flag
163            bStatusChanged = true;
164      }      }
165    
166      LinuxSampler::Engine* EngineChannel::GetEngine() {      LinuxSampler::Engine* EngineChannel::GetEngine() {
# Line 128  namespace LinuxSampler { namespace gig { Line 189  namespace LinuxSampler { namespace gig {
189       * This method will then actually start to load the instrument and block       * This method will then actually start to load the instrument and block
190       * the calling thread until loading was completed.       * the calling thread until loading was completed.
191       *       *
      * @returns detailed description of the method call result  
192       * @see PrepareLoadInstrument()       * @see PrepareLoadInstrument()
193       */       */
194      void EngineChannel::LoadInstrument() {      void EngineChannel::LoadInstrument() {
195            // make sure we don't trigger any new notes with an old
196          if (pEngine) pEngine->DisableAndLock();          // instrument
197                    instrument_change_command_t& cmd = ChangeInstrument(0);
198          ResetInternal();          if (cmd.pInstrument) {
199                        // give old instrument back to instrument manager, but
200          // free old instrument              // keep the dimension regions and samples that are in use
201          if (pInstrument) {              Engine::instruments.HandBackInstrument(cmd.pInstrument, this, cmd.pDimRegionsInUse);
             // give old instrument back to instrument manager  
             Engine::instruments.HandBack(pInstrument, this);  
202          }          }
203            cmd.pDimRegionsInUse->clear();
204    
205          // delete all key groups          // delete all key groups
206          ActiveKeyGroups.clear();          ActiveKeyGroups.clear();
207    
208          // request gig instrument from instrument manager          // request gig instrument from instrument manager
209            ::gig::Instrument* newInstrument;
210          try {          try {
211              instrument_id_t instrid;              InstrumentManager::instrument_id_t instrid;
212              instrid.FileName    = InstrumentFile;              instrid.FileName  = InstrumentFile;
213              instrid.iInstrument = InstrumentIdx;              instrid.Index     = InstrumentIdx;
214              pInstrument = Engine::instruments.Borrow(instrid, this);              newInstrument = Engine::instruments.Borrow(instrid, this);
215              if (!pInstrument) {              if (!newInstrument) {
216                  InstrumentStat = -1;                  throw InstrumentManagerException("resource was not created");
                 dmsg(1,("no instrument loaded!!!\n"));  
                 exit(EXIT_FAILURE);  
217              }              }
218          }          }
219          catch (RIFF::Exception e) {          catch (RIFF::Exception e) {
220              InstrumentStat = -2;              InstrumentStat = -2;
221                StatusChanged(true);
222              String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message;              String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message;
223              throw LinuxSamplerException(msg);              throw Exception(msg);
224          }          }
225          catch (InstrumentResourceManagerException e) {          catch (InstrumentManagerException e) {
226              InstrumentStat = -3;              InstrumentStat = -3;
227                StatusChanged(true);
228              String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message();              String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message();
229              throw LinuxSamplerException(msg);              throw Exception(msg);
230          }          }
231          catch (...) {          catch (...) {
232              InstrumentStat = -4;              InstrumentStat = -4;
233              throw LinuxSamplerException("gig::Engine error: Failed to load instrument, cause: Unknown exception while trying to parse gig file.");              StatusChanged(true);
234                throw Exception("gig::Engine error: Failed to load instrument, cause: Unknown exception while trying to parse gig file.");
235          }          }
236    
237          // rebuild ActiveKeyGroups map with key groups of current instrument          // rebuild ActiveKeyGroups map with key groups of current instrument
238          for (::gig::Region* pRegion = pInstrument->GetFirstRegion(); pRegion; pRegion = pInstrument->GetNextRegion())          for (::gig::Region* pRegion = newInstrument->GetFirstRegion(); pRegion; pRegion = newInstrument->GetNextRegion())
239              if (pRegion->KeyGroup) ActiveKeyGroups[pRegion->KeyGroup] = NULL;              if (pRegion->KeyGroup) ActiveKeyGroups[pRegion->KeyGroup] = NULL;
240    
241          InstrumentIdxName = pInstrument->pInfo->Name;          InstrumentIdxName = newInstrument->pInfo->Name;
242          InstrumentStat = 100;          InstrumentStat = 100;
243    
244          // inform audio driver for the need of two channels          ChangeInstrument(newInstrument);
         try {  
             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);  
         }  
245    
246          if (pEngine) pEngine->Enable();          StatusChanged(true);
247        }
248    
249    
250        /**
251         * Changes the instrument for an engine channel.
252         *
253         * @param pInstrument - new instrument
254         * @returns the resulting instrument change command after the
255         *          command switch, containing the old instrument and
256         *          the dimregions it is using
257         */
258        EngineChannel::instrument_change_command_t& EngineChannel::ChangeInstrument(::gig::Instrument* pInstrument) {
259            instrument_change_command_t& cmd = InstrumentChangeCommand.GetConfigForUpdate();
260            cmd.pInstrument = pInstrument;
261            cmd.bChangeInstrument = true;
262    
263            return InstrumentChangeCommand.SwitchConfig();
264      }      }
265    
266      /**      /**
267       * Will be called by the InstrumentResourceManager when the instrument       * Will be called by the InstrumentResourceManager when the instrument
268       * 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,
269       * can stop playback before that happens.       * so we can stop playback before that happens.
270       */       */
271      void EngineChannel::ResourceToBeUpdated(::gig::Instrument* pResource, void*& pUpdateArg) {      void EngineChannel::ResourceToBeUpdated(::gig::Instrument* pResource, void*& pUpdateArg) {
272          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 282  namespace LinuxSampler { namespace gig {
282      void EngineChannel::ResourceUpdated(::gig::Instrument* pOldResource, ::gig::Instrument* pNewResource, void* pUpdateArg) {      void EngineChannel::ResourceUpdated(::gig::Instrument* pOldResource, ::gig::Instrument* pNewResource, void* pUpdateArg) {
283          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())
284          if (pEngine) pEngine->Enable();          if (pEngine) pEngine->Enable();
285            bStatusChanged = true; // status of engine has changed, so set notify flag
286        }
287    
288        /**
289         * Will be called by the InstrumentResourceManager on progress changes
290         * while loading or realoading an instrument for this EngineChannel.
291         *
292         * @param fProgress - current progress as value between 0.0 and 1.0
293         */
294        void EngineChannel::OnResourceProgress(float fProgress) {
295            this->InstrumentStat = int(fProgress * 100.0f);
296            dmsg(7,("gig::EngineChannel: progress %d%", InstrumentStat));
297            bStatusChanged = true; // status of engine has changed, so set notify flag
298      }      }
299    
300      void EngineChannel::Connect(AudioOutputDevice* pAudioOut) {      void EngineChannel::Connect(AudioOutputDevice* pAudioOut) {
301          if (pEngine && pEngine->pAudioOutputDevice != pAudioOut) {          if (pEngine) {
302                if (pEngine->pAudioOutputDevice == pAudioOut) return;
303              DisconnectAudioOutputDevice();              DisconnectAudioOutputDevice();
304          }          }
305          pEngine = Engine::AcquireEngine(this, pAudioOut);          pEngine = Engine::AcquireEngine(this, pAudioOut);
306          ResetInternal();                  ResetInternal();
307            pEvents = new RTList<Event>(pEngine->pEventPool);
308    
309            // reset the instrument change command struct (need to be done
310            // twice, as it is double buffered)
311            {
312                instrument_change_command_t& cmd = InstrumentChangeCommand.GetConfigForUpdate();
313                cmd.pDimRegionsInUse = new RTList< ::gig::DimensionRegion*>(pEngine->pDimRegionPool[0]);
314                cmd.pInstrument = 0;
315                cmd.bChangeInstrument = false;
316            }
317            {
318                instrument_change_command_t& cmd = InstrumentChangeCommand.SwitchConfig();
319                cmd.pDimRegionsInUse = new RTList< ::gig::DimensionRegion*>(pEngine->pDimRegionPool[1]);
320                cmd.pInstrument = 0;
321                cmd.bChangeInstrument = false;
322            }
323    
324            if (pInstrument != NULL) {
325                pInstrument = NULL;
326                InstrumentStat = -1;
327                InstrumentIdx  = -1;
328                InstrumentIdxName = "";
329                InstrumentFile = "";
330                bStatusChanged = true;
331            }
332    
333          for (uint i = 0; i < 128; i++) {          for (uint i = 0; i < 128; i++) {
334              pMIDIKeyInfo[i].pActiveVoices = new RTList<Voice>(pEngine->pVoicePool);              pMIDIKeyInfo[i].pActiveVoices = new RTList<Voice>(pEngine->pVoicePool);
335              pMIDIKeyInfo[i].pEvents       = new RTList<Event>(pEngine->pEventPool);              pMIDIKeyInfo[i].pEvents       = new RTList<Event>(pEngine->pEventPool);
336          }          }
337          AudioDeviceChannelLeft  = 0;          AudioDeviceChannelLeft  = 0;
338          AudioDeviceChannelRight = 1;          AudioDeviceChannelRight = 1;
339          pOutputLeft             = pAudioOut->Channel(0)->Buffer();          if (fxSends.empty()) { // render directly into the AudioDevice's output buffers
340          pOutputRight            = pAudioOut->Channel(1)->Buffer();              pChannelLeft  = pAudioOut->Channel(AudioDeviceChannelLeft);
341                pChannelRight = pAudioOut->Channel(AudioDeviceChannelRight);
342            } else { // use local buffers for rendering and copy later
343                // ensure the local buffers have the correct size
344                if (pChannelLeft)  delete pChannelLeft;
345                if (pChannelRight) delete pChannelRight;
346                pChannelLeft  = new AudioChannel(0, pAudioOut->MaxSamplesPerCycle());
347                pChannelRight = new AudioChannel(1, pAudioOut->MaxSamplesPerCycle());
348            }
349            if (pEngine->EngineDisabled.GetUnsafe()) pEngine->Enable();
350            MidiInputPort::AddSysexListener(pEngine);
351      }      }
352    
353      void EngineChannel::DisconnectAudioOutputDevice() {      void EngineChannel::DisconnectAudioOutputDevice() {
354          if (pEngine) { // if clause to prevent disconnect loops          if (pEngine) { // if clause to prevent disconnect loops
355    
356              ResetInternal();              ResetInternal();
357    
358                // delete the structures used for instrument change
359                RTList< ::gig::DimensionRegion*>* d = InstrumentChangeCommand.GetConfigForUpdate().pDimRegionsInUse;
360                if (d) delete d;
361                EngineChannel::instrument_change_command_t& cmd = InstrumentChangeCommand.SwitchConfig();
362                d = cmd.pDimRegionsInUse;
363                if (d) delete d;
364    
365                if (cmd.pInstrument) {
366                    // release the currently loaded instrument
367                    Engine::instruments.HandBack(cmd.pInstrument, this);
368                }
369    
370                if (pEvents) {
371                    delete pEvents;
372                    pEvents = NULL;
373                }
374              for (uint i = 0; i < 128; i++) {              for (uint i = 0; i < 128; i++) {
375                  if (pMIDIKeyInfo[i].pActiveVoices) delete pMIDIKeyInfo[i].pActiveVoices;                  if (pMIDIKeyInfo[i].pActiveVoices) {
376                  if (pMIDIKeyInfo[i].pEvents)       delete pMIDIKeyInfo[i].pEvents;                      delete pMIDIKeyInfo[i].pActiveVoices;
377                        pMIDIKeyInfo[i].pActiveVoices = NULL;
378                    }
379                    if (pMIDIKeyInfo[i].pEvents) {
380                        delete pMIDIKeyInfo[i].pEvents;
381                        pMIDIKeyInfo[i].pEvents = NULL;
382                    }
383              }              }
             Engine* oldEngine = pEngine;  
384              AudioOutputDevice* oldAudioDevice = pEngine->pAudioOutputDevice;              AudioOutputDevice* oldAudioDevice = pEngine->pAudioOutputDevice;
385              pEngine = NULL;              pEngine = NULL;
386              Engine::FreeEngine(this, oldAudioDevice);              Engine::FreeEngine(this, oldAudioDevice);
387              AudioDeviceChannelLeft  = -1;              AudioDeviceChannelLeft  = -1;
388              AudioDeviceChannelRight = -1;                          AudioDeviceChannelRight = -1;
389                if (!fxSends.empty()) { // free the local rendering buffers
390                    if (pChannelLeft)  delete pChannelLeft;
391                    if (pChannelRight) delete pChannelRight;
392                }
393                pChannelLeft  = NULL;
394                pChannelRight = NULL;
395          }          }
396      }      }
397    
398        AudioOutputDevice* EngineChannel::GetAudioOutputDevice() {
399            return (pEngine) ? pEngine->pAudioOutputDevice : NULL;
400        }
401    
402      void EngineChannel::SetOutputChannel(uint EngineAudioChannel, uint AudioDeviceChannel) {      void EngineChannel::SetOutputChannel(uint EngineAudioChannel, uint AudioDeviceChannel) {
403          if (!pEngine || !pEngine->pAudioOutputDevice) throw AudioOutputException("No audio output device connected yet.");          if (!pEngine || !pEngine->pAudioOutputDevice) throw AudioOutputException("No audio output device connected yet.");
404            
405          AudioChannel* pChannel = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannel);          AudioChannel* pChannel = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannel);
406          if (!pChannel) throw AudioOutputException("Invalid audio output device channel " + ToString(AudioDeviceChannel));          if (!pChannel) throw AudioOutputException("Invalid audio output device channel " + ToString(AudioDeviceChannel));
407          switch (EngineAudioChannel) {          switch (EngineAudioChannel) {
408              case 0: // left output channel              case 0: // left output channel
409                  pOutputLeft = pChannel->Buffer();                  if (fxSends.empty()) pChannelLeft = pChannel;
410                  AudioDeviceChannelLeft = AudioDeviceChannel;                  AudioDeviceChannelLeft = AudioDeviceChannel;
411                  break;                  break;
412              case 1: // right output channel              case 1: // right output channel
413                  pOutputRight = pChannel->Buffer();                  if (fxSends.empty()) pChannelRight = pChannel;
414                  AudioDeviceChannelRight = AudioDeviceChannel;                  AudioDeviceChannelRight = AudioDeviceChannel;
415                  break;                  break;
416              default:              default:
417                  throw AudioOutputException("Invalid engine audio channel " + ToString(EngineAudioChannel));                  throw AudioOutputException("Invalid engine audio channel " + ToString(EngineAudioChannel));
418          }          }
419    
420            bStatusChanged = true;
421      }      }
422    
423      int EngineChannel::OutputChannel(uint EngineAudioChannel) {      int EngineChannel::OutputChannel(uint EngineAudioChannel) {
# Line 276  namespace LinuxSampler { namespace gig { Line 431  namespace LinuxSampler { namespace gig {
431          }          }
432      }      }
433    
434        void EngineChannel::Connect(MidiInputPort* pMidiPort, midi_chan_t MidiChannel) {
435            if (!pMidiPort || pMidiPort == this->pMidiInputPort) return;
436            DisconnectMidiInputPort();
437            this->pMidiInputPort = pMidiPort;
438            this->midiChannel    = MidiChannel;
439            pMidiPort->Connect(this, MidiChannel);
440        }
441    
442        void EngineChannel::DisconnectMidiInputPort() {
443            MidiInputPort* pOldPort = this->pMidiInputPort;
444            this->pMidiInputPort = NULL;
445            if (pOldPort) pOldPort->Disconnect(this);
446        }
447    
448        MidiInputPort* EngineChannel::GetMidiInputPort() {
449            return pMidiInputPort;
450        }
451    
452        midi_chan_t EngineChannel::MidiChannel() {
453            return midiChannel;
454        }
455    
456        FxSend* EngineChannel::AddFxSend(uint8_t MidiCtrl, String Name) throw (Exception) {
457            if (pEngine) pEngine->DisableAndLock();
458            FxSend* pFxSend = new FxSend(this, MidiCtrl, Name);
459            if (fxSends.empty()) {
460                if (pEngine && pEngine->pAudioOutputDevice) {
461                    AudioOutputDevice* pDevice = pEngine->pAudioOutputDevice;
462                    // create local render buffers
463                    pChannelLeft  = new AudioChannel(0, pDevice->MaxSamplesPerCycle());
464                    pChannelRight = new AudioChannel(1, pDevice->MaxSamplesPerCycle());
465                } else {
466                    // postpone local render buffer creation until audio device is assigned
467                    pChannelLeft  = NULL;
468                    pChannelRight = NULL;
469                }
470            }
471            fxSends.push_back(pFxSend);
472            if (pEngine) pEngine->Enable();
473            fireFxSendCountChanged(GetSamplerChannel()->Index(), GetFxSendCount());
474    
475            return pFxSend;
476        }
477    
478        FxSend* EngineChannel::GetFxSend(uint FxSendIndex) {
479            return (FxSendIndex < fxSends.size()) ? fxSends[FxSendIndex] : NULL;
480        }
481    
482        uint EngineChannel::GetFxSendCount() {
483            return fxSends.size();
484        }
485    
486        void EngineChannel::RemoveFxSend(FxSend* pFxSend) {
487            if (pEngine) pEngine->DisableAndLock();
488            for (
489                std::vector<FxSend*>::iterator iter = fxSends.begin();
490                iter != fxSends.end(); iter++
491            ) {
492                if (*iter == pFxSend) {
493                    delete pFxSend;
494                    fxSends.erase(iter);
495                    if (fxSends.empty()) {
496                        // destroy local render buffers
497                        if (pChannelLeft)  delete pChannelLeft;
498                        if (pChannelRight) delete pChannelRight;
499                        // fallback to render directly into AudioOutputDevice's buffers
500                        if (pEngine && pEngine->pAudioOutputDevice) {
501                            pChannelLeft  = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelLeft);
502                            pChannelRight = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelRight);
503                        } else { // we update the pointers later
504                            pChannelLeft  = NULL;
505                            pChannelRight = NULL;
506                        }
507                    }
508                    break;
509                }
510            }
511            if (pEngine) pEngine->Enable();
512            fireFxSendCountChanged(GetSamplerChannel()->Index(), GetFxSendCount());
513        }
514    
515      /**      /**
516       *  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
517       *  voice for the given key.       *  voice for the given key. This method is meant for real time rendering,
518         *  that is an event will immediately be created with the current system
519         *  time as time stamp.
520       *       *
521       *  @param Key      - MIDI key number of the triggered key       *  @param Key      - MIDI key number of the triggered key
522       *  @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 527  namespace LinuxSampler { namespace gig {
527              event.Type                = Event::type_note_on;              event.Type                = Event::type_note_on;
528              event.Param.Note.Key      = Key;              event.Param.Note.Key      = Key;
529              event.Param.Note.Velocity = Velocity;              event.Param.Note.Velocity = Velocity;
530              event.pEngineChannel      = this;                          event.pEngineChannel      = this;
531                if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
532                else dmsg(1,("EngineChannel: Input event queue full!"));
533                // inform connected virtual MIDI devices if any ...
534                // (e.g. virtual MIDI keyboard in instrument editor(s))
535                ArrayList<VirtualMidiDevice*>& devices =
536                    const_cast<ArrayList<VirtualMidiDevice*>&>(
537                        virtualMidiDevicesReader_MidiThread.Lock()
538                    );
539                for (int i = 0; i < devices.size(); i++) {
540                    devices[i]->SendNoteOnToDevice(Key, Velocity);
541                }
542                virtualMidiDevicesReader_MidiThread.Unlock();
543            }
544        }
545    
546        /**
547         *  Will be called by the MIDIIn Thread to let the audio thread trigger a new
548         *  voice for the given key. This method is meant for offline rendering
549         *  and / or for cases where the exact position of the event in the current
550         *  audio fragment is already known.
551         *
552         *  @param Key         - MIDI key number of the triggered key
553         *  @param Velocity    - MIDI velocity value of the triggered key
554         *  @param FragmentPos - sample point position in the current audio
555         *                       fragment to which this event belongs to
556         */
557        void EngineChannel::SendNoteOn(uint8_t Key, uint8_t Velocity, int32_t FragmentPos) {
558            if (FragmentPos < 0) {
559                dmsg(1,("EngineChannel::SendNoteOn(): negative FragmentPos! Seems MIDI driver is buggy!"));
560            }
561            else if (pEngine) {
562                Event event               = pEngine->pEventGenerator->CreateEvent(FragmentPos);
563                event.Type                = Event::type_note_on;
564                event.Param.Note.Key      = Key;
565                event.Param.Note.Velocity = Velocity;
566                event.pEngineChannel      = this;
567              if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);              if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
568              else dmsg(1,("EngineChannel: Input event queue full!"));              else dmsg(1,("EngineChannel: Input event queue full!"));
569                // inform connected virtual MIDI devices if any ...
570                // (e.g. virtual MIDI keyboard in instrument editor(s))
571                ArrayList<VirtualMidiDevice*>& devices =
572                    const_cast<ArrayList<VirtualMidiDevice*>&>(
573                        virtualMidiDevicesReader_MidiThread.Lock()
574                    );
575                for (int i = 0; i < devices.size(); i++) {
576                    devices[i]->SendNoteOnToDevice(Key, Velocity);
577                }
578                virtualMidiDevicesReader_MidiThread.Unlock();
579          }          }
580      }      }
581    
582      /**      /**
583       *  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
584       *  voice(s) on the given key.       *  voice(s) on the given key. This method is meant for real time rendering,
585         *  that is an event will immediately be created with the current system
586         *  time as time stamp.
587       *       *
588       *  @param Key      - MIDI key number of the released key       *  @param Key      - MIDI key number of the released key
589       *  @param Velocity - MIDI release velocity value of the released key       *  @param Velocity - MIDI release velocity value of the released key
# Line 311  namespace LinuxSampler { namespace gig { Line 597  namespace LinuxSampler { namespace gig {
597              event.pEngineChannel      = this;              event.pEngineChannel      = this;
598              if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);              if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
599              else dmsg(1,("EngineChannel: Input event queue full!"));              else dmsg(1,("EngineChannel: Input event queue full!"));
600                // inform connected virtual MIDI devices if any ...
601                // (e.g. virtual MIDI keyboard in instrument editor(s))
602                ArrayList<VirtualMidiDevice*>& devices =
603                    const_cast<ArrayList<VirtualMidiDevice*>&>(
604                        virtualMidiDevicesReader_MidiThread.Lock()
605                    );
606                for (int i = 0; i < devices.size(); i++) {
607                    devices[i]->SendNoteOffToDevice(Key, Velocity);
608                }
609                virtualMidiDevicesReader_MidiThread.Unlock();
610            }
611        }
612    
613        /**
614         *  Will be called by the MIDIIn Thread to signal the audio thread to release
615         *  voice(s) on the given key. This method is meant for offline rendering
616         *  and / or for cases where the exact position of the event in the current
617         *  audio fragment is already known.
618         *
619         *  @param Key         - MIDI key number of the released key
620         *  @param Velocity    - MIDI release velocity value of the released key
621         *  @param FragmentPos - sample point position in the current audio
622         *                       fragment to which this event belongs to
623         */
624        void EngineChannel::SendNoteOff(uint8_t Key, uint8_t Velocity, int32_t FragmentPos) {
625            if (FragmentPos < 0) {
626                dmsg(1,("EngineChannel::SendNoteOff(): negative FragmentPos! Seems MIDI driver is buggy!"));
627            }
628            else if (pEngine) {
629                Event event               = pEngine->pEventGenerator->CreateEvent(FragmentPos);
630                event.Type                = Event::type_note_off;
631                event.Param.Note.Key      = Key;
632                event.Param.Note.Velocity = Velocity;
633                event.pEngineChannel      = this;
634                if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
635                else dmsg(1,("EngineChannel: Input event queue full!"));
636                // inform connected virtual MIDI devices if any ...
637                // (e.g. virtual MIDI keyboard in instrument editor(s))
638                ArrayList<VirtualMidiDevice*>& devices =
639                    const_cast<ArrayList<VirtualMidiDevice*>&>(
640                        virtualMidiDevicesReader_MidiThread.Lock()
641                    );
642                for (int i = 0; i < devices.size(); i++) {
643                    devices[i]->SendNoteOffToDevice(Key, Velocity);
644                }
645                virtualMidiDevicesReader_MidiThread.Unlock();
646          }          }
647      }      }
648    
649      /**      /**
650       *  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
651       *  the pitch value for all voices.       *  the pitch value for all voices. This method is meant for real time
652         *  rendering, that is an event will immediately be created with the
653         *  current system time as time stamp.
654       *       *
655       *  @param Pitch - MIDI pitch value (-8192 ... +8191)       *  @param Pitch - MIDI pitch value (-8192 ... +8191)
656       */       */
657      void EngineChannel::SendPitchbend(int Pitch) {      void EngineChannel::SendPitchbend(int Pitch) {
658          if (pEngine) {                  if (pEngine) {
659              Event event             = pEngine->pEventGenerator->CreateEvent();              Event event             = pEngine->pEventGenerator->CreateEvent();
660              event.Type              = Event::type_pitchbend;              event.Type              = Event::type_pitchbend;
661              event.Param.Pitch.Pitch = Pitch;              event.Param.Pitch.Pitch = Pitch;
# Line 332  namespace LinuxSampler { namespace gig { Line 666  namespace LinuxSampler { namespace gig {
666      }      }
667    
668      /**      /**
669         *  Will be called by the MIDIIn Thread to signal the audio thread to change
670         *  the pitch value for all voices. This method is meant for offline
671         *  rendering and / or for cases where the exact position of the event in
672         *  the current audio fragment is already known.
673         *
674         *  @param Pitch       - MIDI pitch value (-8192 ... +8191)
675         *  @param FragmentPos - sample point position in the current audio
676         *                       fragment to which this event belongs to
677         */
678        void EngineChannel::SendPitchbend(int Pitch, int32_t FragmentPos) {
679            if (FragmentPos < 0) {
680                dmsg(1,("EngineChannel::SendPitchBend(): negative FragmentPos! Seems MIDI driver is buggy!"));
681            }
682            else if (pEngine) {
683                Event event             = pEngine->pEventGenerator->CreateEvent(FragmentPos);
684                event.Type              = Event::type_pitchbend;
685                event.Param.Pitch.Pitch = Pitch;
686                event.pEngineChannel    = this;
687                if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
688                else dmsg(1,("EngineChannel: Input event queue full!"));
689            }
690        }
691    
692        /**
693       *  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
694       *  continuous controller value has changed.       *  continuous controller value has changed. This method is meant for real
695         *  time rendering, that is an event will immediately be created with the
696         *  current system time as time stamp.
697       *       *
698       *  @param Controller - MIDI controller number of the occured control change       *  @param Controller - MIDI controller number of the occured control change
699       *  @param Value      - value of the control change       *  @param Value      - value of the control change
# Line 350  namespace LinuxSampler { namespace gig { Line 710  namespace LinuxSampler { namespace gig {
710          }          }
711      }      }
712    
713        /**
714         *  Will be called by the MIDIIn Thread to signal the audio thread that a
715         *  continuous controller value has changed. This method is meant for
716         *  offline rendering and / or for cases where the exact position of the
717         *  event in the current audio fragment is already known.
718         *
719         *  @param Controller  - MIDI controller number of the occured control change
720         *  @param Value       - value of the control change
721         *  @param FragmentPos - sample point position in the current audio
722         *                       fragment to which this event belongs to
723         */
724        void EngineChannel::SendControlChange(uint8_t Controller, uint8_t Value, int32_t FragmentPos) {
725            if (FragmentPos < 0) {
726                dmsg(1,("EngineChannel::SendControlChange(): negative FragmentPos! Seems MIDI driver is buggy!"));
727            }
728            else if (pEngine) {
729                Event event               = pEngine->pEventGenerator->CreateEvent(FragmentPos);
730                event.Type                = Event::type_control_change;
731                event.Param.CC.Controller = Controller;
732                event.Param.CC.Value      = Value;
733                event.pEngineChannel      = this;
734                if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
735                else dmsg(1,("EngineChannel: Input event queue full!"));
736            }
737        }
738    
739        void EngineChannel::ClearEventLists() {
740            pEvents->clear();
741            // empty MIDI key specific event lists
742            {
743                RTList<uint>::Iterator iuiKey = pActiveKeys->first();
744                RTList<uint>::Iterator end    = pActiveKeys->end();
745                for(; iuiKey != end; ++iuiKey) {
746                    pMIDIKeyInfo[*iuiKey].pEvents->clear(); // free all events on the key
747                }
748            }
749        }
750    
751        void EngineChannel::ResetControllers() {
752            Pitch          = 0;
753            SustainPedal   = false;
754            SostenutoPedal = false;
755            GlobalVolume   = 1.0f;
756            MidiVolume     = 1.0;
757            GlobalPanLeft  = 1.0f;
758            GlobalPanRight = 1.0f;
759            iLastPanRequest = 64;
760            GlobalTranspose = 0;
761            // set all MIDI controller values to zero
762            memset(ControllerTable, 0x00, 129);
763            // reset all FX Send levels
764            for (
765                std::vector<FxSend*>::iterator iter = fxSends.begin();
766                iter != fxSends.end(); iter++
767            ) {
768                (*iter)->Reset();
769            }
770        }
771    
772        /**
773         * Copy all events from the engine channel's input event queue buffer to
774         * the internal event list. This will be done at the beginning of each
775         * audio cycle (that is each RenderAudio() call) to distinguish all
776         * events which have to be processed in the current audio cycle. Each
777         * EngineChannel has it's own input event queue for the common channel
778         * specific events (like NoteOn, NoteOff and ControlChange events).
779         * Beside that, the engine also has a input event queue for global
780         * events (usually SysEx messages).
781         *
782         * @param Samples - number of sample points to be processed in the
783         *                  current audio cycle
784         */
785        void EngineChannel::ImportEvents(uint Samples) {
786            // import events from pure software MIDI "devices"
787            // (e.g. virtual keyboard in instrument editor)
788            {
789                const int FragmentPos = 0; // randomly chosen, we don't care about jitter for virtual MIDI devices
790                Event event = pEngine->pEventGenerator->CreateEvent(FragmentPos);
791                VirtualMidiDevice::event_t devEvent; // the event format we get from the virtual MIDI device
792                // as we're going to (carefully) write some status to the
793                // synchronized struct, we cast away the const
794                ArrayList<VirtualMidiDevice*>& devices =
795                    const_cast<ArrayList<VirtualMidiDevice*>&>(virtualMidiDevicesReader_AudioThread.Lock());
796                // iterate through all virtual MIDI devices
797                for (int i = 0; i < devices.size(); i++) {
798                    VirtualMidiDevice* pDev = devices[i];
799                    // I think we can simply flush the whole FIFO(s), the user shouldn't be so fast ;-)
800                    while (pDev->GetMidiEventFromDevice(devEvent)) {
801                        event.Type =
802                            (devEvent.Type == VirtualMidiDevice::EVENT_TYPE_NOTEON) ?
803                                Event::type_note_on : Event::type_note_off;
804                        event.Param.Note.Key      = devEvent.Key;
805                        event.Param.Note.Velocity = devEvent.Velocity;
806                        event.pEngineChannel      = this;
807                        // copy event to internal event list
808                        if (pEvents->poolIsEmpty()) {
809                            dmsg(1,("Event pool emtpy!\n"));
810                            goto exitVirtualDevicesLoop;
811                        }
812                        *pEvents->allocAppend() = event;
813                    }
814                }
815            }
816            exitVirtualDevicesLoop:
817            virtualMidiDevicesReader_AudioThread.Unlock();
818    
819            // import events from the regular MIDI devices
820            RingBuffer<Event,false>::NonVolatileReader eventQueueReader = pEventQueue->get_non_volatile_reader();
821            Event* pEvent;
822            while (true) {
823                // get next event from input event queue
824                if (!(pEvent = eventQueueReader.pop())) break;
825                // if younger event reached, ignore that and all subsequent ones for now
826                if (pEvent->FragmentPos() >= Samples) {
827                    eventQueueReader--;
828                    dmsg(2,("Younger Event, pos=%d ,Samples=%d!\n",pEvent->FragmentPos(),Samples));
829                    pEvent->ResetFragmentPos();
830                    break;
831                }
832                // copy event to internal event list
833                if (pEvents->poolIsEmpty()) {
834                    dmsg(1,("Event pool emtpy!\n"));
835                    break;
836                }
837                *pEvents->allocAppend() = *pEvent;
838            }
839            eventQueueReader.free(); // free all copied events from input queue
840        }
841    
842        void EngineChannel::RemoveAllFxSends() {
843            if (pEngine) pEngine->DisableAndLock();
844            if (!fxSends.empty()) { // free local render buffers
845                if (pChannelLeft) {
846                    delete pChannelLeft;
847                    if (pEngine && pEngine->pAudioOutputDevice) {
848                        // fallback to render directly to the AudioOutputDevice's buffer
849                        pChannelLeft = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelLeft);
850                    } else pChannelLeft = NULL;
851                }
852                if (pChannelRight) {
853                    delete pChannelRight;
854                    if (pEngine && pEngine->pAudioOutputDevice) {
855                        // fallback to render directly to the AudioOutputDevice's buffer
856                        pChannelRight = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelRight);
857                    } else pChannelRight = NULL;
858                }
859            }
860            for (int i = 0; i < fxSends.size(); i++) delete fxSends[i];
861            fxSends.clear();
862            if (pEngine) pEngine->Enable();
863        }
864    
865        void EngineChannel::Connect(VirtualMidiDevice* pDevice) {
866            // double buffer ... double work ...
867            {
868                ArrayList<VirtualMidiDevice*>& devices = virtualMidiDevices.GetConfigForUpdate();
869                devices.add(pDevice);
870            }
871            {
872                ArrayList<VirtualMidiDevice*>& devices = virtualMidiDevices.SwitchConfig();
873                devices.add(pDevice);
874            }
875        }
876    
877        void EngineChannel::Disconnect(VirtualMidiDevice* pDevice) {
878            // double buffer ... double work ...
879            {
880                ArrayList<VirtualMidiDevice*>& devices = virtualMidiDevices.GetConfigForUpdate();
881                devices.remove(pDevice);
882            }
883            {
884                ArrayList<VirtualMidiDevice*>& devices = virtualMidiDevices.SwitchConfig();
885                devices.remove(pDevice);
886            }
887        }
888    
889      float EngineChannel::Volume() {      float EngineChannel::Volume() {
890          return GlobalVolume;          return GlobalVolume;
891      }      }
892    
893      void EngineChannel::Volume(float f) {      void EngineChannel::Volume(float f) {
894          GlobalVolume = f;          GlobalVolume = f;
895            bStatusChanged = true; // status of engine channel has changed, so set notify flag
896        }
897    
898        float EngineChannel::Pan() {
899            return float(iLastPanRequest - 64) / 64.0f;
900        }
901    
902        void EngineChannel::Pan(float f) {
903            int iMidiPan = int(f * 64.0f) + 64;
904            if (iMidiPan > 127) iMidiPan = 127;
905            else if (iMidiPan < 0) iMidiPan = 0;
906            GlobalPanLeft  = Engine::PanCurve[128 - iMidiPan];
907            GlobalPanRight = Engine::PanCurve[iMidiPan];
908            iLastPanRequest = iMidiPan;
909      }      }
910    
911      uint EngineChannel::Channels() {      uint EngineChannel::Channels() {
# Line 376  namespace LinuxSampler { namespace gig { Line 926  namespace LinuxSampler { namespace gig {
926    
927      int EngineChannel::InstrumentStatus() {      int EngineChannel::InstrumentStatus() {
928          return InstrumentStat;          return InstrumentStat;
929      }          }
930    
931        String EngineChannel::EngineName() {
932            return LS_GIG_ENGINE_NAME;
933        }
934    
935        void EngineChannel::ClearDimRegionsInUse() {
936            {
937                instrument_change_command_t& cmd = InstrumentChangeCommand.GetConfigForUpdate();
938                if(cmd.pDimRegionsInUse != NULL) cmd.pDimRegionsInUse->clear();
939            }
940            {
941                instrument_change_command_t& cmd = InstrumentChangeCommand.SwitchConfig();
942                if(cmd.pDimRegionsInUse != NULL) cmd.pDimRegionsInUse->clear();
943            }
944        }
945    
946        void EngineChannel::ResetDimRegionsInUse() {
947            {
948                instrument_change_command_t& cmd = InstrumentChangeCommand.GetConfigForUpdate();
949                if(cmd.pDimRegionsInUse != NULL) {
950                    delete cmd.pDimRegionsInUse;
951                    cmd.pDimRegionsInUse = new RTList< ::gig::DimensionRegion*>(pEngine->pDimRegionPool[0]);
952                }
953            }
954            {
955                instrument_change_command_t& cmd = InstrumentChangeCommand.SwitchConfig();
956                if(cmd.pDimRegionsInUse != NULL) {
957                    delete cmd.pDimRegionsInUse;
958                    cmd.pDimRegionsInUse = new RTList< ::gig::DimensionRegion*>(pEngine->pDimRegionPool[1]);
959                }
960            }
961        }
962    
963  }} // namespace LinuxSampler::gig  }} // namespace LinuxSampler::gig
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