/[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 1844 by persson, Mon Feb 23 18:29:50 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          for (uint i = 0; i < 128; i++) {          for (uint i = 0; i < 128; i++) {
325              pMIDIKeyInfo[i].pActiveVoices = new RTList<Voice>(pEngine->pVoicePool);              pMIDIKeyInfo[i].pActiveVoices = new RTList<Voice>(pEngine->pVoicePool);
326              pMIDIKeyInfo[i].pEvents       = new RTList<Event>(pEngine->pEventPool);              pMIDIKeyInfo[i].pEvents       = new RTList<Event>(pEngine->pEventPool);
327          }          }
328          AudioDeviceChannelLeft  = 0;          AudioDeviceChannelLeft  = 0;
329          AudioDeviceChannelRight = 1;          AudioDeviceChannelRight = 1;
330          pOutputLeft             = pAudioOut->Channel(0)->Buffer();          if (fxSends.empty()) { // render directly into the AudioDevice's output buffers
331          pOutputRight            = pAudioOut->Channel(1)->Buffer();              pChannelLeft  = pAudioOut->Channel(AudioDeviceChannelLeft);
332                pChannelRight = pAudioOut->Channel(AudioDeviceChannelRight);
333            } else { // use local buffers for rendering and copy later
334                // ensure the local buffers have the correct size
335                if (pChannelLeft)  delete pChannelLeft;
336                if (pChannelRight) delete pChannelRight;
337                pChannelLeft  = new AudioChannel(0, pAudioOut->MaxSamplesPerCycle());
338                pChannelRight = new AudioChannel(1, pAudioOut->MaxSamplesPerCycle());
339            }
340            if (pEngine->EngineDisabled.GetUnsafe()) pEngine->Enable();
341            MidiInputPort::AddSysexListener(pEngine);
342      }      }
343    
344      void EngineChannel::DisconnectAudioOutputDevice() {      void EngineChannel::DisconnectAudioOutputDevice() {
345          if (pEngine) { // if clause to prevent disconnect loops          if (pEngine) { // if clause to prevent disconnect loops
346    
347              ResetInternal();              ResetInternal();
348    
349                // delete the structures used for instrument change
350                RTList< ::gig::DimensionRegion*>* d = InstrumentChangeCommand.GetConfigForUpdate().pDimRegionsInUse;
351                if (d) delete d;
352                EngineChannel::instrument_change_command_t& cmd = InstrumentChangeCommand.SwitchConfig();
353                d = cmd.pDimRegionsInUse;
354                if (d) delete d;
355    
356                if (cmd.pInstrument) {
357                    // release the currently loaded instrument
358                    Engine::instruments.HandBack(cmd.pInstrument, this);
359                }
360    
361                if (pEvents) {
362                    delete pEvents;
363                    pEvents = NULL;
364                }
365              for (uint i = 0; i < 128; i++) {              for (uint i = 0; i < 128; i++) {
366                  if (pMIDIKeyInfo[i].pActiveVoices) delete pMIDIKeyInfo[i].pActiveVoices;                  if (pMIDIKeyInfo[i].pActiveVoices) {
367                  if (pMIDIKeyInfo[i].pEvents)       delete pMIDIKeyInfo[i].pEvents;                      delete pMIDIKeyInfo[i].pActiveVoices;
368                        pMIDIKeyInfo[i].pActiveVoices = NULL;
369                    }
370                    if (pMIDIKeyInfo[i].pEvents) {
371                        delete pMIDIKeyInfo[i].pEvents;
372                        pMIDIKeyInfo[i].pEvents = NULL;
373                    }
374              }              }
             Engine* oldEngine = pEngine;  
375              AudioOutputDevice* oldAudioDevice = pEngine->pAudioOutputDevice;              AudioOutputDevice* oldAudioDevice = pEngine->pAudioOutputDevice;
376              pEngine = NULL;              pEngine = NULL;
377              Engine::FreeEngine(this, oldAudioDevice);              Engine::FreeEngine(this, oldAudioDevice);
378              AudioDeviceChannelLeft  = -1;              AudioDeviceChannelLeft  = -1;
379              AudioDeviceChannelRight = -1;                          AudioDeviceChannelRight = -1;
380                if (!fxSends.empty()) { // free the local rendering buffers
381                    if (pChannelLeft)  delete pChannelLeft;
382                    if (pChannelRight) delete pChannelRight;
383                }
384                pChannelLeft  = NULL;
385                pChannelRight = NULL;
386          }          }
387      }      }
388    
389        AudioOutputDevice* EngineChannel::GetAudioOutputDevice() {
390            return (pEngine) ? pEngine->pAudioOutputDevice : NULL;
391        }
392    
393      void EngineChannel::SetOutputChannel(uint EngineAudioChannel, uint AudioDeviceChannel) {      void EngineChannel::SetOutputChannel(uint EngineAudioChannel, uint AudioDeviceChannel) {
394          if (!pEngine || !pEngine->pAudioOutputDevice) throw AudioOutputException("No audio output device connected yet.");          if (!pEngine || !pEngine->pAudioOutputDevice) throw AudioOutputException("No audio output device connected yet.");
395            
396          AudioChannel* pChannel = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannel);          AudioChannel* pChannel = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannel);
397          if (!pChannel) throw AudioOutputException("Invalid audio output device channel " + ToString(AudioDeviceChannel));          if (!pChannel) throw AudioOutputException("Invalid audio output device channel " + ToString(AudioDeviceChannel));
398          switch (EngineAudioChannel) {          switch (EngineAudioChannel) {
399              case 0: // left output channel              case 0: // left output channel
400                  pOutputLeft = pChannel->Buffer();                  if (fxSends.empty()) pChannelLeft = pChannel;
401                  AudioDeviceChannelLeft = AudioDeviceChannel;                  AudioDeviceChannelLeft = AudioDeviceChannel;
402                  break;                  break;
403              case 1: // right output channel              case 1: // right output channel
404                  pOutputRight = pChannel->Buffer();                  if (fxSends.empty()) pChannelRight = pChannel;
405                  AudioDeviceChannelRight = AudioDeviceChannel;                  AudioDeviceChannelRight = AudioDeviceChannel;
406                  break;                  break;
407              default:              default:
408                  throw AudioOutputException("Invalid engine audio channel " + ToString(EngineAudioChannel));                  throw AudioOutputException("Invalid engine audio channel " + ToString(EngineAudioChannel));
409          }          }
410    
411            bStatusChanged = true;
412      }      }
413    
414      int EngineChannel::OutputChannel(uint EngineAudioChannel) {      int EngineChannel::OutputChannel(uint EngineAudioChannel) {
# Line 276  namespace LinuxSampler { namespace gig { Line 422  namespace LinuxSampler { namespace gig {
422          }          }
423      }      }
424    
425        void EngineChannel::Connect(MidiInputPort* pMidiPort, midi_chan_t MidiChannel) {
426            if (!pMidiPort || pMidiPort == this->pMidiInputPort) return;
427            DisconnectMidiInputPort();
428            this->pMidiInputPort = pMidiPort;
429            this->midiChannel    = MidiChannel;
430            pMidiPort->Connect(this, MidiChannel);
431        }
432    
433        void EngineChannel::DisconnectMidiInputPort() {
434            MidiInputPort* pOldPort = this->pMidiInputPort;
435            this->pMidiInputPort = NULL;
436            if (pOldPort) pOldPort->Disconnect(this);
437        }
438    
439        MidiInputPort* EngineChannel::GetMidiInputPort() {
440            return pMidiInputPort;
441        }
442    
443        midi_chan_t EngineChannel::MidiChannel() {
444            return midiChannel;
445        }
446    
447        FxSend* EngineChannel::AddFxSend(uint8_t MidiCtrl, String Name) throw (Exception) {
448            if (pEngine) pEngine->DisableAndLock();
449            FxSend* pFxSend = new FxSend(this, MidiCtrl, Name);
450            if (fxSends.empty()) {
451                if (pEngine && pEngine->pAudioOutputDevice) {
452                    AudioOutputDevice* pDevice = pEngine->pAudioOutputDevice;
453                    // create local render buffers
454                    pChannelLeft  = new AudioChannel(0, pDevice->MaxSamplesPerCycle());
455                    pChannelRight = new AudioChannel(1, pDevice->MaxSamplesPerCycle());
456                } else {
457                    // postpone local render buffer creation until audio device is assigned
458                    pChannelLeft  = NULL;
459                    pChannelRight = NULL;
460                }
461            }
462            fxSends.push_back(pFxSend);
463            if (pEngine) pEngine->Enable();
464            fireFxSendCountChanged(GetSamplerChannel()->Index(), GetFxSendCount());
465    
466            return pFxSend;
467        }
468    
469        FxSend* EngineChannel::GetFxSend(uint FxSendIndex) {
470            return (FxSendIndex < fxSends.size()) ? fxSends[FxSendIndex] : NULL;
471        }
472    
473        uint EngineChannel::GetFxSendCount() {
474            return fxSends.size();
475        }
476    
477        void EngineChannel::RemoveFxSend(FxSend* pFxSend) {
478            if (pEngine) pEngine->DisableAndLock();
479            for (
480                std::vector<FxSend*>::iterator iter = fxSends.begin();
481                iter != fxSends.end(); iter++
482            ) {
483                if (*iter == pFxSend) {
484                    delete pFxSend;
485                    fxSends.erase(iter);
486                    if (fxSends.empty()) {
487                        // destroy local render buffers
488                        if (pChannelLeft)  delete pChannelLeft;
489                        if (pChannelRight) delete pChannelRight;
490                        // fallback to render directly into AudioOutputDevice's buffers
491                        if (pEngine && pEngine->pAudioOutputDevice) {
492                            pChannelLeft  = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelLeft);
493                            pChannelRight = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelRight);
494                        } else { // we update the pointers later
495                            pChannelLeft  = NULL;
496                            pChannelRight = NULL;
497                        }
498                    }
499                    break;
500                }
501            }
502            if (pEngine) pEngine->Enable();
503            fireFxSendCountChanged(GetSamplerChannel()->Index(), GetFxSendCount());
504        }
505    
506      /**      /**
507       *  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
508       *  voice for the given key.       *  voice for the given key. This method is meant for real time rendering,
509         *  that is an event will immediately be created with the current system
510         *  time as time stamp.
511       *       *
512       *  @param Key      - MIDI key number of the triggered key       *  @param Key      - MIDI key number of the triggered key
513       *  @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 518  namespace LinuxSampler { namespace gig {
518              event.Type                = Event::type_note_on;              event.Type                = Event::type_note_on;
519              event.Param.Note.Key      = Key;              event.Param.Note.Key      = Key;
520              event.Param.Note.Velocity = Velocity;              event.Param.Note.Velocity = Velocity;
521              event.pEngineChannel      = this;                          event.pEngineChannel      = this;
522                if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
523                else dmsg(1,("EngineChannel: Input event queue full!"));
524                // inform connected virtual MIDI devices if any ...
525                // (e.g. virtual MIDI keyboard in instrument editor(s))
526                ArrayList<VirtualMidiDevice*>& devices =
527                    const_cast<ArrayList<VirtualMidiDevice*>&>(
528                        virtualMidiDevicesReader_MidiThread.Lock()
529                    );
530                for (int i = 0; i < devices.size(); i++) {
531                    devices[i]->SendNoteOnToDevice(Key, Velocity);
532                }
533                virtualMidiDevicesReader_MidiThread.Unlock();
534            }
535        }
536    
537        /**
538         *  Will be called by the MIDIIn Thread to let the audio thread trigger a new
539         *  voice for the given key. This method is meant for offline rendering
540         *  and / or for cases where the exact position of the event in the current
541         *  audio fragment is already known.
542         *
543         *  @param Key         - MIDI key number of the triggered key
544         *  @param Velocity    - MIDI velocity value of the triggered key
545         *  @param FragmentPos - sample point position in the current audio
546         *                       fragment to which this event belongs to
547         */
548        void EngineChannel::SendNoteOn(uint8_t Key, uint8_t Velocity, int32_t FragmentPos) {
549            if (FragmentPos < 0) {
550                dmsg(1,("EngineChannel::SendNoteOn(): negative FragmentPos! Seems MIDI driver is buggy!"));
551            }
552            else if (pEngine) {
553                Event event               = pEngine->pEventGenerator->CreateEvent(FragmentPos);
554                event.Type                = Event::type_note_on;
555                event.Param.Note.Key      = Key;
556                event.Param.Note.Velocity = Velocity;
557                event.pEngineChannel      = this;
558              if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);              if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
559              else dmsg(1,("EngineChannel: Input event queue full!"));              else dmsg(1,("EngineChannel: Input event queue full!"));
560                // inform connected virtual MIDI devices if any ...
561                // (e.g. virtual MIDI keyboard in instrument editor(s))
562                ArrayList<VirtualMidiDevice*>& devices =
563                    const_cast<ArrayList<VirtualMidiDevice*>&>(
564                        virtualMidiDevicesReader_MidiThread.Lock()
565                    );
566                for (int i = 0; i < devices.size(); i++) {
567                    devices[i]->SendNoteOnToDevice(Key, Velocity);
568                }
569                virtualMidiDevicesReader_MidiThread.Unlock();
570          }          }
571      }      }
572    
573      /**      /**
574       *  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
575       *  voice(s) on the given key.       *  voice(s) on the given key. This method is meant for real time rendering,
576         *  that is an event will immediately be created with the current system
577         *  time as time stamp.
578       *       *
579       *  @param Key      - MIDI key number of the released key       *  @param Key      - MIDI key number of the released key
580       *  @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 588  namespace LinuxSampler { namespace gig {
588              event.pEngineChannel      = this;              event.pEngineChannel      = this;
589              if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);              if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
590              else dmsg(1,("EngineChannel: Input event queue full!"));              else dmsg(1,("EngineChannel: Input event queue full!"));
591                // inform connected virtual MIDI devices if any ...
592                // (e.g. virtual MIDI keyboard in instrument editor(s))
593                ArrayList<VirtualMidiDevice*>& devices =
594                    const_cast<ArrayList<VirtualMidiDevice*>&>(
595                        virtualMidiDevicesReader_MidiThread.Lock()
596                    );
597                for (int i = 0; i < devices.size(); i++) {
598                    devices[i]->SendNoteOffToDevice(Key, Velocity);
599                }
600                virtualMidiDevicesReader_MidiThread.Unlock();
601            }
602        }
603    
604        /**
605         *  Will be called by the MIDIIn Thread to signal the audio thread to release
606         *  voice(s) on the given key. This method is meant for offline rendering
607         *  and / or for cases where the exact position of the event in the current
608         *  audio fragment is already known.
609         *
610         *  @param Key         - MIDI key number of the released key
611         *  @param Velocity    - MIDI release velocity value of the released key
612         *  @param FragmentPos - sample point position in the current audio
613         *                       fragment to which this event belongs to
614         */
615        void EngineChannel::SendNoteOff(uint8_t Key, uint8_t Velocity, int32_t FragmentPos) {
616            if (FragmentPos < 0) {
617                dmsg(1,("EngineChannel::SendNoteOff(): negative FragmentPos! Seems MIDI driver is buggy!"));
618            }
619            else if (pEngine) {
620                Event event               = pEngine->pEventGenerator->CreateEvent(FragmentPos);
621                event.Type                = Event::type_note_off;
622                event.Param.Note.Key      = Key;
623                event.Param.Note.Velocity = Velocity;
624                event.pEngineChannel      = this;
625                if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
626                else dmsg(1,("EngineChannel: Input event queue full!"));
627                // inform connected virtual MIDI devices if any ...
628                // (e.g. virtual MIDI keyboard in instrument editor(s))
629                ArrayList<VirtualMidiDevice*>& devices =
630                    const_cast<ArrayList<VirtualMidiDevice*>&>(
631                        virtualMidiDevicesReader_MidiThread.Lock()
632                    );
633                for (int i = 0; i < devices.size(); i++) {
634                    devices[i]->SendNoteOffToDevice(Key, Velocity);
635                }
636                virtualMidiDevicesReader_MidiThread.Unlock();
637          }          }
638      }      }
639    
640      /**      /**
641       *  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
642       *  the pitch value for all voices.       *  the pitch value for all voices. This method is meant for real time
643         *  rendering, that is an event will immediately be created with the
644         *  current system time as time stamp.
645       *       *
646       *  @param Pitch - MIDI pitch value (-8192 ... +8191)       *  @param Pitch - MIDI pitch value (-8192 ... +8191)
647       */       */
648      void EngineChannel::SendPitchbend(int Pitch) {      void EngineChannel::SendPitchbend(int Pitch) {
649          if (pEngine) {                  if (pEngine) {
650              Event event             = pEngine->pEventGenerator->CreateEvent();              Event event             = pEngine->pEventGenerator->CreateEvent();
651              event.Type              = Event::type_pitchbend;              event.Type              = Event::type_pitchbend;
652              event.Param.Pitch.Pitch = Pitch;              event.Param.Pitch.Pitch = Pitch;
# Line 332  namespace LinuxSampler { namespace gig { Line 657  namespace LinuxSampler { namespace gig {
657      }      }
658    
659      /**      /**
660         *  Will be called by the MIDIIn Thread to signal the audio thread to change
661         *  the pitch value for all voices. This method is meant for offline
662         *  rendering and / or for cases where the exact position of the event in
663         *  the current audio fragment is already known.
664         *
665         *  @param Pitch       - MIDI pitch value (-8192 ... +8191)
666         *  @param FragmentPos - sample point position in the current audio
667         *                       fragment to which this event belongs to
668         */
669        void EngineChannel::SendPitchbend(int Pitch, int32_t FragmentPos) {
670            if (FragmentPos < 0) {
671                dmsg(1,("EngineChannel::SendPitchBend(): negative FragmentPos! Seems MIDI driver is buggy!"));
672            }
673            else if (pEngine) {
674                Event event             = pEngine->pEventGenerator->CreateEvent(FragmentPos);
675                event.Type              = Event::type_pitchbend;
676                event.Param.Pitch.Pitch = Pitch;
677                event.pEngineChannel    = this;
678                if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
679                else dmsg(1,("EngineChannel: Input event queue full!"));
680            }
681        }
682    
683        /**
684       *  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
685       *  continuous controller value has changed.       *  continuous controller value has changed. This method is meant for real
686         *  time rendering, that is an event will immediately be created with the
687         *  current system time as time stamp.
688       *       *
689       *  @param Controller - MIDI controller number of the occured control change       *  @param Controller - MIDI controller number of the occured control change
690       *  @param Value      - value of the control change       *  @param Value      - value of the control change
# Line 350  namespace LinuxSampler { namespace gig { Line 701  namespace LinuxSampler { namespace gig {
701          }          }
702      }      }
703    
704        /**
705         *  Will be called by the MIDIIn Thread to signal the audio thread that a
706         *  continuous controller value has changed. This method is meant for
707         *  offline rendering and / or for cases where the exact position of the
708         *  event in the current audio fragment is already known.
709         *
710         *  @param Controller  - MIDI controller number of the occured control change
711         *  @param Value       - value of the control change
712         *  @param FragmentPos - sample point position in the current audio
713         *                       fragment to which this event belongs to
714         */
715        void EngineChannel::SendControlChange(uint8_t Controller, uint8_t Value, int32_t FragmentPos) {
716            if (FragmentPos < 0) {
717                dmsg(1,("EngineChannel::SendControlChange(): negative FragmentPos! Seems MIDI driver is buggy!"));
718            }
719            else if (pEngine) {
720                Event event               = pEngine->pEventGenerator->CreateEvent(FragmentPos);
721                event.Type                = Event::type_control_change;
722                event.Param.CC.Controller = Controller;
723                event.Param.CC.Value      = Value;
724                event.pEngineChannel      = this;
725                if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
726                else dmsg(1,("EngineChannel: Input event queue full!"));
727            }
728        }
729    
730        void EngineChannel::ClearEventLists() {
731            pEvents->clear();
732            // empty MIDI key specific event lists
733            {
734                RTList<uint>::Iterator iuiKey = pActiveKeys->first();
735                RTList<uint>::Iterator end    = pActiveKeys->end();
736                for(; iuiKey != end; ++iuiKey) {
737                    pMIDIKeyInfo[*iuiKey].pEvents->clear(); // free all events on the key
738                }
739            }
740        }
741    
742        void EngineChannel::ResetControllers() {
743            Pitch          = 0;
744            SustainPedal   = false;
745            SostenutoPedal = false;
746            GlobalVolume   = 1.0f;
747            MidiVolume     = 1.0;
748            GlobalPanLeft  = 1.0f;
749            GlobalPanRight = 1.0f;
750            iLastPanRequest = 64;
751            GlobalTranspose = 0;
752            // set all MIDI controller values to zero
753            memset(ControllerTable, 0x00, 129);
754            // reset all FX Send levels
755            for (
756                std::vector<FxSend*>::iterator iter = fxSends.begin();
757                iter != fxSends.end(); iter++
758            ) {
759                (*iter)->Reset();
760            }
761        }
762    
763        /**
764         * Copy all events from the engine channel's input event queue buffer to
765         * the internal event list. This will be done at the beginning of each
766         * audio cycle (that is each RenderAudio() call) to distinguish all
767         * events which have to be processed in the current audio cycle. Each
768         * EngineChannel has it's own input event queue for the common channel
769         * specific events (like NoteOn, NoteOff and ControlChange events).
770         * Beside that, the engine also has a input event queue for global
771         * events (usually SysEx messages).
772         *
773         * @param Samples - number of sample points to be processed in the
774         *                  current audio cycle
775         */
776        void EngineChannel::ImportEvents(uint Samples) {
777            // import events from pure software MIDI "devices"
778            // (e.g. virtual keyboard in instrument editor)
779            {
780                const int FragmentPos = 0; // randomly chosen, we don't care about jitter for virtual MIDI devices
781                Event event = pEngine->pEventGenerator->CreateEvent(FragmentPos);
782                VirtualMidiDevice::event_t devEvent; // the event format we get from the virtual MIDI device
783                // as we're going to (carefully) write some status to the
784                // synchronized struct, we cast away the const
785                ArrayList<VirtualMidiDevice*>& devices =
786                    const_cast<ArrayList<VirtualMidiDevice*>&>(virtualMidiDevicesReader_AudioThread.Lock());
787                // iterate through all virtual MIDI devices
788                for (int i = 0; i < devices.size(); i++) {
789                    VirtualMidiDevice* pDev = devices[i];
790                    // I think we can simply flush the whole FIFO(s), the user shouldn't be so fast ;-)
791                    while (pDev->GetMidiEventFromDevice(devEvent)) {
792                        event.Type =
793                            (devEvent.Type == VirtualMidiDevice::EVENT_TYPE_NOTEON) ?
794                                Event::type_note_on : Event::type_note_off;
795                        event.Param.Note.Key      = devEvent.Key;
796                        event.Param.Note.Velocity = devEvent.Velocity;
797                        event.pEngineChannel      = this;
798                        // copy event to internal event list
799                        if (pEvents->poolIsEmpty()) {
800                            dmsg(1,("Event pool emtpy!\n"));
801                            goto exitVirtualDevicesLoop;
802                        }
803                        *pEvents->allocAppend() = event;
804                    }
805                }
806            }
807            exitVirtualDevicesLoop:
808            virtualMidiDevicesReader_AudioThread.Unlock();
809    
810            // import events from the regular MIDI devices
811            RingBuffer<Event,false>::NonVolatileReader eventQueueReader = pEventQueue->get_non_volatile_reader();
812            Event* pEvent;
813            while (true) {
814                // get next event from input event queue
815                if (!(pEvent = eventQueueReader.pop())) break;
816                // if younger event reached, ignore that and all subsequent ones for now
817                if (pEvent->FragmentPos() >= Samples) {
818                    eventQueueReader--;
819                    dmsg(2,("Younger Event, pos=%d ,Samples=%d!\n",pEvent->FragmentPos(),Samples));
820                    pEvent->ResetFragmentPos();
821                    break;
822                }
823                // copy event to internal event list
824                if (pEvents->poolIsEmpty()) {
825                    dmsg(1,("Event pool emtpy!\n"));
826                    break;
827                }
828                *pEvents->allocAppend() = *pEvent;
829            }
830            eventQueueReader.free(); // free all copied events from input queue
831        }
832    
833        void EngineChannel::RemoveAllFxSends() {
834            if (pEngine) pEngine->DisableAndLock();
835            if (!fxSends.empty()) { // free local render buffers
836                if (pChannelLeft) {
837                    delete pChannelLeft;
838                    if (pEngine && pEngine->pAudioOutputDevice) {
839                        // fallback to render directly to the AudioOutputDevice's buffer
840                        pChannelLeft = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelLeft);
841                    } else pChannelLeft = NULL;
842                }
843                if (pChannelRight) {
844                    delete pChannelRight;
845                    if (pEngine && pEngine->pAudioOutputDevice) {
846                        // fallback to render directly to the AudioOutputDevice's buffer
847                        pChannelRight = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelRight);
848                    } else pChannelRight = NULL;
849                }
850            }
851            for (int i = 0; i < fxSends.size(); i++) delete fxSends[i];
852            fxSends.clear();
853            if (pEngine) pEngine->Enable();
854        }
855    
856        void EngineChannel::Connect(VirtualMidiDevice* pDevice) {
857            // double buffer ... double work ...
858            {
859                ArrayList<VirtualMidiDevice*>& devices = virtualMidiDevices.GetConfigForUpdate();
860                devices.add(pDevice);
861            }
862            {
863                ArrayList<VirtualMidiDevice*>& devices = virtualMidiDevices.SwitchConfig();
864                devices.add(pDevice);
865            }
866        }
867    
868        void EngineChannel::Disconnect(VirtualMidiDevice* pDevice) {
869            // double buffer ... double work ...
870            {
871                ArrayList<VirtualMidiDevice*>& devices = virtualMidiDevices.GetConfigForUpdate();
872                devices.remove(pDevice);
873            }
874            {
875                ArrayList<VirtualMidiDevice*>& devices = virtualMidiDevices.SwitchConfig();
876                devices.remove(pDevice);
877            }
878        }
879    
880      float EngineChannel::Volume() {      float EngineChannel::Volume() {
881          return GlobalVolume;          return GlobalVolume;
882      }      }
883    
884      void EngineChannel::Volume(float f) {      void EngineChannel::Volume(float f) {
885          GlobalVolume = f;          GlobalVolume = f;
886            bStatusChanged = true; // status of engine channel has changed, so set notify flag
887        }
888    
889        float EngineChannel::Pan() {
890            return float(iLastPanRequest - 64) / 64.0f;
891        }
892    
893        void EngineChannel::Pan(float f) {
894            int iMidiPan = int(f * 64.0f) + 64;
895            if (iMidiPan > 127) iMidiPan = 127;
896            else if (iMidiPan < 0) iMidiPan = 0;
897            GlobalPanLeft  = Engine::PanCurve[128 - iMidiPan];
898            GlobalPanRight = Engine::PanCurve[iMidiPan];
899            iLastPanRequest = iMidiPan;
900      }      }
901    
902      uint EngineChannel::Channels() {      uint EngineChannel::Channels() {
# Line 376  namespace LinuxSampler { namespace gig { Line 917  namespace LinuxSampler { namespace gig {
917    
918      int EngineChannel::InstrumentStatus() {      int EngineChannel::InstrumentStatus() {
919          return InstrumentStat;          return InstrumentStat;
920      }          }
921    
922        String EngineChannel::EngineName() {
923            return LS_GIG_ENGINE_NAME;
924        }
925    
926        void EngineChannel::ClearDimRegionsInUse() {
927            {
928                instrument_change_command_t& cmd = InstrumentChangeCommand.GetConfigForUpdate();
929                if(cmd.pDimRegionsInUse != NULL) cmd.pDimRegionsInUse->clear();
930            }
931            {
932                instrument_change_command_t& cmd = InstrumentChangeCommand.SwitchConfig();
933                if(cmd.pDimRegionsInUse != NULL) cmd.pDimRegionsInUse->clear();
934            }
935        }
936    
937        void EngineChannel::ResetDimRegionsInUse() {
938            {
939                instrument_change_command_t& cmd = InstrumentChangeCommand.GetConfigForUpdate();
940                if(cmd.pDimRegionsInUse != NULL) {
941                    delete cmd.pDimRegionsInUse;
942                    cmd.pDimRegionsInUse = new RTList< ::gig::DimensionRegion*>(pEngine->pDimRegionPool[0]);
943                }
944            }
945            {
946                instrument_change_command_t& cmd = InstrumentChangeCommand.SwitchConfig();
947                if(cmd.pDimRegionsInUse != NULL) {
948                    delete cmd.pDimRegionsInUse;
949                    cmd.pDimRegionsInUse = new RTList< ::gig::DimensionRegion*>(pEngine->pDimRegionPool[1]);
950                }
951            }
952        }
953    
954  }} // namespace LinuxSampler::gig  }} // namespace LinuxSampler::gig
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