/[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 1662 by schoenebeck, Sun Feb 3 16:21:38 2008 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 - 2008 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    
28      EngineChannel::EngineChannel() {  namespace LinuxSampler { namespace gig {
29    
30        EngineChannel::EngineChannel() :
31            InstrumentChangeCommandReader(InstrumentChangeCommand),
32            virtualMidiDevicesReader_AudioThread(virtualMidiDevices),
33            virtualMidiDevicesReader_MidiThread(virtualMidiDevices)
34        {
35          pMIDIKeyInfo = new midi_key_info_t[128];          pMIDIKeyInfo = new midi_key_info_t[128];
36          pEngine      = NULL;          pEngine      = NULL;
37          pInstrument  = NULL;          pInstrument  = NULL;
38          pEventQueue  = new RingBuffer<Event>(MAX_EVENTS_PER_FRAGMENT, 0);                  pEvents      = NULL; // we allocate when we retrieve the right Engine object
39            pEventQueue  = new RingBuffer<Event,false>(CONFIG_MAX_EVENTS_PER_FRAGMENT, 0);
40          pActiveKeys  = new Pool<uint>(128);          pActiveKeys  = new Pool<uint>(128);
41          for (uint i = 0; i < 128; i++) {          for (uint i = 0; i < 128; i++) {
42              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 44  namespace LinuxSampler { namespace gig {
44              pMIDIKeyInfo[i].Active         = false;              pMIDIKeyInfo[i].Active         = false;
45              pMIDIKeyInfo[i].ReleaseTrigger = false;              pMIDIKeyInfo[i].ReleaseTrigger = false;
46              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
47                pMIDIKeyInfo[i].VoiceTheftsQueued = 0;
48                pMIDIKeyInfo[i].RoundRobinIndex = 0;
49          }          }
50          InstrumentIdx  = -1;          InstrumentIdx  = -1;
51          InstrumentStat = -1;          InstrumentStat = -1;
52            pChannelLeft  = NULL;
53            pChannelRight = NULL;
54          AudioDeviceChannelLeft  = -1;          AudioDeviceChannelLeft  = -1;
55          AudioDeviceChannelRight = -1;          AudioDeviceChannelRight = -1;
56            pMidiInputPort = NULL;
57            midiChannel = midi_chan_all;
58            ResetControllers();
59            SoloMode       = false;
60            PortamentoMode = false;
61            PortamentoTime = CONFIG_PORTAMENTO_TIME_DEFAULT;
62      }      }
63    
64      EngineChannel::~EngineChannel() {      EngineChannel::~EngineChannel() {
65          if (pInstrument) Engine::instruments.HandBack(pInstrument, this);          DisconnectAudioOutputDevice();
         for (uint i = 0; i < 128; i++) {  
             if (pMIDIKeyInfo[i].pActiveVoices) {  
                 pMIDIKeyInfo[i].pActiveVoices->clear();  
                 delete pMIDIKeyInfo[i].pActiveVoices;  
             }  
             if (pMIDIKeyInfo[i].pEvents) {  
                 pMIDIKeyInfo[i].pEvents->clear();  
                 delete pMIDIKeyInfo[i].pEvents;  
             }  
         }  
66          if (pEventQueue) delete pEventQueue;          if (pEventQueue) delete pEventQueue;
67          if (pActiveKeys) delete pActiveKeys;          if (pActiveKeys) delete pActiveKeys;
68          if (pMIDIKeyInfo) delete[] pMIDIKeyInfo;          if (pMIDIKeyInfo) delete[] pMIDIKeyInfo;
69            RemoveAllFxSends();
70        }
71    
72        /**
73         * Implementation of virtual method from abstract EngineChannel interface.
74         * This method will periodically be polled (e.g. by the LSCP server) to
75         * check if some engine channel parameter has changed since the last
76         * StatusChanged() call.
77         *
78         * This method can also be used to mark the engine channel as changed
79         * from outside, e.g. by a MIDI input device. The optional argument
80         * \a nNewStatus can be used for this.
81         *
82         * TODO: This "poll method" is just a lazy solution and might be
83         *       replaced in future.
84         * @param bNewStatus - (optional, default: false) sets the new status flag
85         * @returns true if engine channel status has changed since last
86         *          StatusChanged() call
87         */
88        bool EngineChannel::StatusChanged(bool bNewStatus) {
89            bool b = bStatusChanged;
90            bStatusChanged = bNewStatus;
91            return b;
92        }
93    
94        void EngineChannel::Reset() {
95            if (pEngine) pEngine->DisableAndLock();
96            ResetInternal();
97            ResetControllers();
98            if (pEngine) {
99                pEngine->Enable();
100                pEngine->Reset();
101            }
102      }      }
103    
104      /**      /**
105       * This method is not thread safe!       * This method is not thread safe!
106       */       */
107      void EngineChannel::ResetInternal() {      void EngineChannel::ResetInternal() {
         Pitch               = 0;  
         SustainPedal        = false;  
         GlobalVolume        = 1.0;  
108          CurrentKeyDimension = 0;          CurrentKeyDimension = 0;
109    
         // set all MIDI controller values to zero  
         memset(ControllerTable, 0x00, 128);  
   
         // reset voice stealing parameters  
         itLastStolenVoice = RTList<Voice>::Iterator();  
         iuiLastStolenKey  = RTList<uint>::Iterator();  
   
110          // reset key info          // reset key info
111          for (uint i = 0; i < 128; i++) {          for (uint i = 0; i < 128; i++) {
112              if (pMIDIKeyInfo[i].pActiveVoices)              if (pMIDIKeyInfo[i].pActiveVoices)
# Line 87  namespace LinuxSampler { namespace gig { Line 117  namespace LinuxSampler { namespace gig {
117              pMIDIKeyInfo[i].Active         = false;              pMIDIKeyInfo[i].Active         = false;
118              pMIDIKeyInfo[i].ReleaseTrigger = false;              pMIDIKeyInfo[i].ReleaseTrigger = false;
119              pMIDIKeyInfo[i].itSelf         = Pool<uint>::Iterator();              pMIDIKeyInfo[i].itSelf         = Pool<uint>::Iterator();
120                pMIDIKeyInfo[i].VoiceTheftsQueued = 0;
121          }          }
122            SoloKey       = -1;    // no solo key active yet
123            PortamentoPos = -1.0f; // no portamento active yet
124    
125          // reset all key groups          // reset all key groups
126          std::map<uint,uint*>::iterator iter = ActiveKeyGroups.begin();          std::map<uint,uint*>::iterator iter = ActiveKeyGroups.begin();
# Line 100  namespace LinuxSampler { namespace gig { Line 133  namespace LinuxSampler { namespace gig {
133          pEventQueue->init();          pEventQueue->init();
134    
135          if (pEngine) pEngine->ResetInternal();          if (pEngine) pEngine->ResetInternal();
136    
137            // status of engine channel has changed, so set notify flag
138            bStatusChanged = true;
139      }      }
140    
141      LinuxSampler::Engine* EngineChannel::GetEngine() {      LinuxSampler::Engine* EngineChannel::GetEngine() {
# Line 128  namespace LinuxSampler { namespace gig { Line 164  namespace LinuxSampler { namespace gig {
164       * This method will then actually start to load the instrument and block       * This method will then actually start to load the instrument and block
165       * the calling thread until loading was completed.       * the calling thread until loading was completed.
166       *       *
      * @returns detailed description of the method call result  
167       * @see PrepareLoadInstrument()       * @see PrepareLoadInstrument()
168       */       */
169      void EngineChannel::LoadInstrument() {      void EngineChannel::LoadInstrument() {
170            // make sure we don't trigger any new notes with an old
171          if (pEngine) pEngine->DisableAndLock();          // instrument
172                    instrument_change_command_t& cmd = ChangeInstrument(0);
173          ResetInternal();          if (cmd.pInstrument) {
174                        // give old instrument back to instrument manager, but
175          // free old instrument              // keep the dimension regions and samples that are in use
176          if (pInstrument) {              Engine::instruments.HandBackInstrument(cmd.pInstrument, this, cmd.pDimRegionsInUse);
             // give old instrument back to instrument manager  
             Engine::instruments.HandBack(pInstrument, this);  
177          }          }
178            cmd.pDimRegionsInUse->clear();
179    
180          // delete all key groups          // delete all key groups
181          ActiveKeyGroups.clear();          ActiveKeyGroups.clear();
182    
183          // request gig instrument from instrument manager          // request gig instrument from instrument manager
184            ::gig::Instrument* newInstrument;
185          try {          try {
186              instrument_id_t instrid;              InstrumentManager::instrument_id_t instrid;
187              instrid.FileName    = InstrumentFile;              instrid.FileName  = InstrumentFile;
188              instrid.iInstrument = InstrumentIdx;              instrid.Index     = InstrumentIdx;
189              pInstrument = Engine::instruments.Borrow(instrid, this);              newInstrument = Engine::instruments.Borrow(instrid, this);
190              if (!pInstrument) {              if (!newInstrument) {
191                  InstrumentStat = -1;                  throw InstrumentManagerException("resource was not created");
                 dmsg(1,("no instrument loaded!!!\n"));  
                 exit(EXIT_FAILURE);  
192              }              }
193          }          }
194          catch (RIFF::Exception e) {          catch (RIFF::Exception e) {
195              InstrumentStat = -2;              InstrumentStat = -2;
196                StatusChanged(true);
197              String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message;              String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message;
198              throw LinuxSamplerException(msg);              throw Exception(msg);
199          }          }
200          catch (InstrumentResourceManagerException e) {          catch (InstrumentManagerException e) {
201              InstrumentStat = -3;              InstrumentStat = -3;
202                StatusChanged(true);
203              String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message();              String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message();
204              throw LinuxSamplerException(msg);              throw Exception(msg);
205          }          }
206          catch (...) {          catch (...) {
207              InstrumentStat = -4;              InstrumentStat = -4;
208              throw LinuxSamplerException("gig::Engine error: Failed to load instrument, cause: Unknown exception while trying to parse gig file.");              StatusChanged(true);
209                throw Exception("gig::Engine error: Failed to load instrument, cause: Unknown exception while trying to parse gig file.");
210          }          }
211    
212          // rebuild ActiveKeyGroups map with key groups of current instrument          // rebuild ActiveKeyGroups map with key groups of current instrument
213          for (::gig::Region* pRegion = pInstrument->GetFirstRegion(); pRegion; pRegion = pInstrument->GetNextRegion())          for (::gig::Region* pRegion = newInstrument->GetFirstRegion(); pRegion; pRegion = newInstrument->GetNextRegion())
214              if (pRegion->KeyGroup) ActiveKeyGroups[pRegion->KeyGroup] = NULL;              if (pRegion->KeyGroup) ActiveKeyGroups[pRegion->KeyGroup] = NULL;
215    
216          InstrumentIdxName = pInstrument->pInfo->Name;          InstrumentIdxName = newInstrument->pInfo->Name;
217          InstrumentStat = 100;          InstrumentStat = 100;
218    
219          // 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);  
         }  
220    
221          if (pEngine) pEngine->Enable();          StatusChanged(true);
222        }
223    
224    
225        /**
226         * Changes the instrument for an engine channel.
227         *
228         * @param pInstrument - new instrument
229         * @returns the resulting instrument change command after the
230         *          command switch, containing the old instrument and
231         *          the dimregions it is using
232         */
233        EngineChannel::instrument_change_command_t& EngineChannel::ChangeInstrument(::gig::Instrument* pInstrument) {
234            instrument_change_command_t& cmd = InstrumentChangeCommand.GetConfigForUpdate();
235            cmd.pInstrument = pInstrument;
236            cmd.bChangeInstrument = true;
237    
238            return InstrumentChangeCommand.SwitchConfig();
239      }      }
240    
241      /**      /**
242       * Will be called by the InstrumentResourceManager when the instrument       * Will be called by the InstrumentResourceManager when the instrument
243       * 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,
244       * can stop playback before that happens.       * so we can stop playback before that happens.
245       */       */
246      void EngineChannel::ResourceToBeUpdated(::gig::Instrument* pResource, void*& pUpdateArg) {      void EngineChannel::ResourceToBeUpdated(::gig::Instrument* pResource, void*& pUpdateArg) {
247          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 257  namespace LinuxSampler { namespace gig {
257      void EngineChannel::ResourceUpdated(::gig::Instrument* pOldResource, ::gig::Instrument* pNewResource, void* pUpdateArg) {      void EngineChannel::ResourceUpdated(::gig::Instrument* pOldResource, ::gig::Instrument* pNewResource, void* pUpdateArg) {
258          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())
259          if (pEngine) pEngine->Enable();          if (pEngine) pEngine->Enable();
260            bStatusChanged = true; // status of engine has changed, so set notify flag
261        }
262    
263        /**
264         * Will be called by the InstrumentResourceManager on progress changes
265         * while loading or realoading an instrument for this EngineChannel.
266         *
267         * @param fProgress - current progress as value between 0.0 and 1.0
268         */
269        void EngineChannel::OnResourceProgress(float fProgress) {
270            this->InstrumentStat = int(fProgress * 100.0f);
271            dmsg(7,("gig::EngineChannel: progress %d%", InstrumentStat));
272            bStatusChanged = true; // status of engine has changed, so set notify flag
273      }      }
274    
275      void EngineChannel::Connect(AudioOutputDevice* pAudioOut) {      void EngineChannel::Connect(AudioOutputDevice* pAudioOut) {
276          if (pEngine && pEngine->pAudioOutputDevice != pAudioOut) {          if (pEngine) {
277                if (pEngine->pAudioOutputDevice == pAudioOut) return;
278              DisconnectAudioOutputDevice();              DisconnectAudioOutputDevice();
279          }          }
280          pEngine = Engine::AcquireEngine(this, pAudioOut);          pEngine = Engine::AcquireEngine(this, pAudioOut);
281          ResetInternal();                  ResetInternal();
282            pEvents = new RTList<Event>(pEngine->pEventPool);
283    
284            // reset the instrument change command struct (need to be done
285            // twice, as it is double buffered)
286            {
287                instrument_change_command_t& cmd = InstrumentChangeCommand.GetConfigForUpdate();
288                cmd.pDimRegionsInUse = new RTList< ::gig::DimensionRegion*>(pEngine->pDimRegionPool[0]);
289                cmd.pInstrument = 0;
290                cmd.bChangeInstrument = false;
291            }
292            {
293                instrument_change_command_t& cmd = InstrumentChangeCommand.SwitchConfig();
294                cmd.pDimRegionsInUse = new RTList< ::gig::DimensionRegion*>(pEngine->pDimRegionPool[1]);
295                cmd.pInstrument = 0;
296                cmd.bChangeInstrument = false;
297            }
298    
299          for (uint i = 0; i < 128; i++) {          for (uint i = 0; i < 128; i++) {
300              pMIDIKeyInfo[i].pActiveVoices = new RTList<Voice>(pEngine->pVoicePool);              pMIDIKeyInfo[i].pActiveVoices = new RTList<Voice>(pEngine->pVoicePool);
301              pMIDIKeyInfo[i].pEvents       = new RTList<Event>(pEngine->pEventPool);              pMIDIKeyInfo[i].pEvents       = new RTList<Event>(pEngine->pEventPool);
302          }          }
303          AudioDeviceChannelLeft  = 0;          AudioDeviceChannelLeft  = 0;
304          AudioDeviceChannelRight = 1;          AudioDeviceChannelRight = 1;
305          pOutputLeft             = pAudioOut->Channel(0)->Buffer();          if (fxSends.empty()) { // render directly into the AudioDevice's output buffers
306          pOutputRight            = pAudioOut->Channel(1)->Buffer();              pChannelLeft  = pAudioOut->Channel(AudioDeviceChannelLeft);
307                pChannelRight = pAudioOut->Channel(AudioDeviceChannelRight);
308            } else { // use local buffers for rendering and copy later
309                // ensure the local buffers have the correct size
310                if (pChannelLeft)  delete pChannelLeft;
311                if (pChannelRight) delete pChannelRight;
312                pChannelLeft  = new AudioChannel(0, pAudioOut->MaxSamplesPerCycle());
313                pChannelRight = new AudioChannel(1, pAudioOut->MaxSamplesPerCycle());
314            }
315            if (pEngine->EngineDisabled.GetUnsafe()) pEngine->Enable();
316            MidiInputPort::AddSysexListener(pEngine);
317      }      }
318    
319      void EngineChannel::DisconnectAudioOutputDevice() {      void EngineChannel::DisconnectAudioOutputDevice() {
320          if (pEngine) { // if clause to prevent disconnect loops          if (pEngine) { // if clause to prevent disconnect loops
321    
322                // delete the structures used for instrument change
323                RTList< ::gig::DimensionRegion*>* d = InstrumentChangeCommand.GetConfigForUpdate().pDimRegionsInUse;
324                if (d) delete d;
325                EngineChannel::instrument_change_command_t& cmd = InstrumentChangeCommand.SwitchConfig();
326                d = cmd.pDimRegionsInUse;
327    
328                if (cmd.pInstrument) {
329                    // release the currently loaded instrument
330                    Engine::instruments.HandBackInstrument(cmd.pInstrument, this, d);
331                }
332                if (d) delete d;
333    
334                // release all active dimension regions to resource
335                // manager
336                RTList<uint>::Iterator iuiKey = pActiveKeys->first();
337                RTList<uint>::Iterator end    = pActiveKeys->end();
338                while (iuiKey != end) { // iterate through all active keys
339                    midi_key_info_t* pKey = &pMIDIKeyInfo[*iuiKey];
340                    ++iuiKey;
341    
342                    RTList<Voice>::Iterator itVoice     = pKey->pActiveVoices->first();
343                    RTList<Voice>::Iterator itVoicesEnd = pKey->pActiveVoices->end();
344                    for (; itVoice != itVoicesEnd; ++itVoice) { // iterate through all voices on this key
345                        Engine::instruments.HandBackDimReg(itVoice->pDimRgn);
346                    }
347                }
348    
349              ResetInternal();              ResetInternal();
350                if (pEvents) {
351                    delete pEvents;
352                    pEvents = NULL;
353                }
354              for (uint i = 0; i < 128; i++) {              for (uint i = 0; i < 128; i++) {
355                  if (pMIDIKeyInfo[i].pActiveVoices) delete pMIDIKeyInfo[i].pActiveVoices;                  if (pMIDIKeyInfo[i].pActiveVoices) {
356                  if (pMIDIKeyInfo[i].pEvents)       delete pMIDIKeyInfo[i].pEvents;                      delete pMIDIKeyInfo[i].pActiveVoices;
357                        pMIDIKeyInfo[i].pActiveVoices = NULL;
358                    }
359                    if (pMIDIKeyInfo[i].pEvents) {
360                        delete pMIDIKeyInfo[i].pEvents;
361                        pMIDIKeyInfo[i].pEvents = NULL;
362                    }
363              }              }
364              Engine* oldEngine = pEngine;              Engine* oldEngine = pEngine;
365              AudioOutputDevice* oldAudioDevice = pEngine->pAudioOutputDevice;              AudioOutputDevice* oldAudioDevice = pEngine->pAudioOutputDevice;
366              pEngine = NULL;              pEngine = NULL;
367              Engine::FreeEngine(this, oldAudioDevice);              Engine::FreeEngine(this, oldAudioDevice);
368              AudioDeviceChannelLeft  = -1;              AudioDeviceChannelLeft  = -1;
369              AudioDeviceChannelRight = -1;                          AudioDeviceChannelRight = -1;
370                if (!fxSends.empty()) { // free the local rendering buffers
371                    if (pChannelLeft)  delete pChannelLeft;
372                    if (pChannelRight) delete pChannelRight;
373                }
374                pChannelLeft  = NULL;
375                pChannelRight = NULL;
376          }          }
377      }      }
378    
379        AudioOutputDevice* EngineChannel::GetAudioOutputDevice() {
380            return (pEngine) ? pEngine->pAudioOutputDevice : NULL;
381        }
382    
383      void EngineChannel::SetOutputChannel(uint EngineAudioChannel, uint AudioDeviceChannel) {      void EngineChannel::SetOutputChannel(uint EngineAudioChannel, uint AudioDeviceChannel) {
384          if (!pEngine || !pEngine->pAudioOutputDevice) throw AudioOutputException("No audio output device connected yet.");          if (!pEngine || !pEngine->pAudioOutputDevice) throw AudioOutputException("No audio output device connected yet.");
385            
386          AudioChannel* pChannel = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannel);          AudioChannel* pChannel = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannel);
387          if (!pChannel) throw AudioOutputException("Invalid audio output device channel " + ToString(AudioDeviceChannel));          if (!pChannel) throw AudioOutputException("Invalid audio output device channel " + ToString(AudioDeviceChannel));
388          switch (EngineAudioChannel) {          switch (EngineAudioChannel) {
389              case 0: // left output channel              case 0: // left output channel
390                  pOutputLeft = pChannel->Buffer();                  if (fxSends.empty()) pChannelLeft = pChannel;
391                  AudioDeviceChannelLeft = AudioDeviceChannel;                  AudioDeviceChannelLeft = AudioDeviceChannel;
392                  break;                  break;
393              case 1: // right output channel              case 1: // right output channel
394                  pOutputRight = pChannel->Buffer();                  if (fxSends.empty()) pChannelRight = pChannel;
395                  AudioDeviceChannelRight = AudioDeviceChannel;                  AudioDeviceChannelRight = AudioDeviceChannel;
396                  break;                  break;
397              default:              default:
398                  throw AudioOutputException("Invalid engine audio channel " + ToString(EngineAudioChannel));                  throw AudioOutputException("Invalid engine audio channel " + ToString(EngineAudioChannel));
399          }          }
400    
401            bStatusChanged = true;
402      }      }
403    
404      int EngineChannel::OutputChannel(uint EngineAudioChannel) {      int EngineChannel::OutputChannel(uint EngineAudioChannel) {
# Line 276  namespace LinuxSampler { namespace gig { Line 412  namespace LinuxSampler { namespace gig {
412          }          }
413      }      }
414    
415        void EngineChannel::Connect(MidiInputPort* pMidiPort, midi_chan_t MidiChannel) {
416            if (!pMidiPort || pMidiPort == this->pMidiInputPort) return;
417            DisconnectMidiInputPort();
418            this->pMidiInputPort = pMidiPort;
419            this->midiChannel    = MidiChannel;
420            pMidiPort->Connect(this, MidiChannel);
421        }
422    
423        void EngineChannel::DisconnectMidiInputPort() {
424            MidiInputPort* pOldPort = this->pMidiInputPort;
425            this->pMidiInputPort = NULL;
426            if (pOldPort) pOldPort->Disconnect(this);
427        }
428    
429        MidiInputPort* EngineChannel::GetMidiInputPort() {
430            return pMidiInputPort;
431        }
432    
433        midi_chan_t EngineChannel::MidiChannel() {
434            return midiChannel;
435        }
436    
437        FxSend* EngineChannel::AddFxSend(uint8_t MidiCtrl, String Name) throw (Exception) {
438            if (pEngine) pEngine->DisableAndLock();
439            FxSend* pFxSend = new FxSend(this, MidiCtrl, Name);
440            if (fxSends.empty()) {
441                if (pEngine && pEngine->pAudioOutputDevice) {
442                    AudioOutputDevice* pDevice = pEngine->pAudioOutputDevice;
443                    // create local render buffers
444                    pChannelLeft  = new AudioChannel(0, pDevice->MaxSamplesPerCycle());
445                    pChannelRight = new AudioChannel(1, pDevice->MaxSamplesPerCycle());
446                } else {
447                    // postpone local render buffer creation until audio device is assigned
448                    pChannelLeft  = NULL;
449                    pChannelRight = NULL;
450                }
451            }
452            fxSends.push_back(pFxSend);
453            if (pEngine) pEngine->Enable();
454            fireFxSendCountChanged(iSamplerChannelIndex, GetFxSendCount());
455    
456            return pFxSend;
457        }
458    
459        FxSend* EngineChannel::GetFxSend(uint FxSendIndex) {
460            return (FxSendIndex < fxSends.size()) ? fxSends[FxSendIndex] : NULL;
461        }
462    
463        uint EngineChannel::GetFxSendCount() {
464            return fxSends.size();
465        }
466    
467        void EngineChannel::RemoveFxSend(FxSend* pFxSend) {
468            if (pEngine) pEngine->DisableAndLock();
469            for (
470                std::vector<FxSend*>::iterator iter = fxSends.begin();
471                iter != fxSends.end(); iter++
472            ) {
473                if (*iter == pFxSend) {
474                    delete pFxSend;
475                    fxSends.erase(iter);
476                    if (fxSends.empty()) {
477                        // destroy local render buffers
478                        if (pChannelLeft)  delete pChannelLeft;
479                        if (pChannelRight) delete pChannelRight;
480                        // fallback to render directly into AudioOutputDevice's buffers
481                        if (pEngine && pEngine->pAudioOutputDevice) {
482                            pChannelLeft  = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelLeft);
483                            pChannelRight = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelRight);
484                        } else { // we update the pointers later
485                            pChannelLeft  = NULL;
486                            pChannelRight = NULL;
487                        }
488                    }
489                    break;
490                }
491            }
492            if (pEngine) pEngine->Enable();
493            fireFxSendCountChanged(iSamplerChannelIndex, GetFxSendCount());
494        }
495    
496      /**      /**
497       *  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
498       *  voice for the given key.       *  voice for the given key. This method is meant for real time rendering,
499         *  that is an event will immediately be created with the current system
500         *  time as time stamp.
501       *       *
502       *  @param Key      - MIDI key number of the triggered key       *  @param Key      - MIDI key number of the triggered key
503       *  @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 508  namespace LinuxSampler { namespace gig {
508              event.Type                = Event::type_note_on;              event.Type                = Event::type_note_on;
509              event.Param.Note.Key      = Key;              event.Param.Note.Key      = Key;
510              event.Param.Note.Velocity = Velocity;              event.Param.Note.Velocity = Velocity;
511              event.pEngineChannel      = this;                          event.pEngineChannel      = this;
512              if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);              if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
513              else dmsg(1,("EngineChannel: Input event queue full!"));              else dmsg(1,("EngineChannel: Input event queue full!"));
514                // inform connected virtual MIDI devices if any ...
515                // (e.g. virtual MIDI keyboard in instrument editor(s))
516                ArrayList<VirtualMidiDevice*>& devices =
517                    const_cast<ArrayList<VirtualMidiDevice*>&>(
518                        virtualMidiDevicesReader_MidiThread.Lock()
519                    );
520                for (int i = 0; i < devices.size(); i++) {
521                    devices[i]->SendNoteOnToDevice(Key, Velocity);
522                }
523                virtualMidiDevicesReader_MidiThread.Unlock();
524            }
525        }
526    
527        /**
528         *  Will be called by the MIDIIn Thread to let the audio thread trigger a new
529         *  voice for the given key. This method is meant for offline rendering
530         *  and / or for cases where the exact position of the event in the current
531         *  audio fragment is already known.
532         *
533         *  @param Key         - MIDI key number of the triggered key
534         *  @param Velocity    - MIDI velocity value of the triggered key
535         *  @param FragmentPos - sample point position in the current audio
536         *                       fragment to which this event belongs to
537         */
538        void EngineChannel::SendNoteOn(uint8_t Key, uint8_t Velocity, int32_t FragmentPos) {
539            if (FragmentPos < 0) {
540                dmsg(1,("EngineChannel::SendNoteOn(): negative FragmentPos! Seems MIDI driver is buggy!"));
541            }
542            else if (pEngine) {
543                Event event               = pEngine->pEventGenerator->CreateEvent(FragmentPos);
544                event.Type                = Event::type_note_on;
545                event.Param.Note.Key      = Key;
546                event.Param.Note.Velocity = Velocity;
547                event.pEngineChannel      = this;
548                if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
549                else dmsg(1,("EngineChannel: Input event queue full!"));
550                // inform connected virtual MIDI devices if any ...
551                // (e.g. virtual MIDI keyboard in instrument editor(s))
552                ArrayList<VirtualMidiDevice*>& devices =
553                    const_cast<ArrayList<VirtualMidiDevice*>&>(
554                        virtualMidiDevicesReader_MidiThread.Lock()
555                    );
556                for (int i = 0; i < devices.size(); i++) {
557                    devices[i]->SendNoteOnToDevice(Key, Velocity);
558                }
559                virtualMidiDevicesReader_MidiThread.Unlock();
560          }          }
561      }      }
562    
563      /**      /**
564       *  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
565       *  voice(s) on the given key.       *  voice(s) on the given key. This method is meant for real time rendering,
566         *  that is an event will immediately be created with the current system
567         *  time as time stamp.
568       *       *
569       *  @param Key      - MIDI key number of the released key       *  @param Key      - MIDI key number of the released key
570       *  @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 578  namespace LinuxSampler { namespace gig {
578              event.pEngineChannel      = this;              event.pEngineChannel      = this;
579              if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);              if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
580              else dmsg(1,("EngineChannel: Input event queue full!"));              else dmsg(1,("EngineChannel: Input event queue full!"));
581                // inform connected virtual MIDI devices if any ...
582                // (e.g. virtual MIDI keyboard in instrument editor(s))
583                ArrayList<VirtualMidiDevice*>& devices =
584                    const_cast<ArrayList<VirtualMidiDevice*>&>(
585                        virtualMidiDevicesReader_MidiThread.Lock()
586                    );
587                for (int i = 0; i < devices.size(); i++) {
588                    devices[i]->SendNoteOffToDevice(Key, Velocity);
589                }
590                virtualMidiDevicesReader_MidiThread.Unlock();
591            }
592        }
593    
594        /**
595         *  Will be called by the MIDIIn Thread to signal the audio thread to release
596         *  voice(s) on the given key. This method is meant for offline rendering
597         *  and / or for cases where the exact position of the event in the current
598         *  audio fragment is already known.
599         *
600         *  @param Key         - MIDI key number of the released key
601         *  @param Velocity    - MIDI release velocity value of the released key
602         *  @param FragmentPos - sample point position in the current audio
603         *                       fragment to which this event belongs to
604         */
605        void EngineChannel::SendNoteOff(uint8_t Key, uint8_t Velocity, int32_t FragmentPos) {
606            if (FragmentPos < 0) {
607                dmsg(1,("EngineChannel::SendNoteOff(): negative FragmentPos! Seems MIDI driver is buggy!"));
608            }
609            else if (pEngine) {
610                Event event               = pEngine->pEventGenerator->CreateEvent(FragmentPos);
611                event.Type                = Event::type_note_off;
612                event.Param.Note.Key      = Key;
613                event.Param.Note.Velocity = Velocity;
614                event.pEngineChannel      = this;
615                if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
616                else dmsg(1,("EngineChannel: Input event queue full!"));
617                // inform connected virtual MIDI devices if any ...
618                // (e.g. virtual MIDI keyboard in instrument editor(s))
619                ArrayList<VirtualMidiDevice*>& devices =
620                    const_cast<ArrayList<VirtualMidiDevice*>&>(
621                        virtualMidiDevicesReader_MidiThread.Lock()
622                    );
623                for (int i = 0; i < devices.size(); i++) {
624                    devices[i]->SendNoteOffToDevice(Key, Velocity);
625                }
626                virtualMidiDevicesReader_MidiThread.Unlock();
627          }          }
628      }      }
629    
630      /**      /**
631       *  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
632       *  the pitch value for all voices.       *  the pitch value for all voices. This method is meant for real time
633         *  rendering, that is an event will immediately be created with the
634         *  current system time as time stamp.
635       *       *
636       *  @param Pitch - MIDI pitch value (-8192 ... +8191)       *  @param Pitch - MIDI pitch value (-8192 ... +8191)
637       */       */
638      void EngineChannel::SendPitchbend(int Pitch) {      void EngineChannel::SendPitchbend(int Pitch) {
639          if (pEngine) {                  if (pEngine) {
640              Event event             = pEngine->pEventGenerator->CreateEvent();              Event event             = pEngine->pEventGenerator->CreateEvent();
641              event.Type              = Event::type_pitchbend;              event.Type              = Event::type_pitchbend;
642              event.Param.Pitch.Pitch = Pitch;              event.Param.Pitch.Pitch = Pitch;
# Line 332  namespace LinuxSampler { namespace gig { Line 647  namespace LinuxSampler { namespace gig {
647      }      }
648    
649      /**      /**
650         *  Will be called by the MIDIIn Thread to signal the audio thread to change
651         *  the pitch value for all voices. This method is meant for offline
652         *  rendering and / or for cases where the exact position of the event in
653         *  the current audio fragment is already known.
654         *
655         *  @param Pitch       - MIDI pitch value (-8192 ... +8191)
656         *  @param FragmentPos - sample point position in the current audio
657         *                       fragment to which this event belongs to
658         */
659        void EngineChannel::SendPitchbend(int Pitch, int32_t FragmentPos) {
660            if (FragmentPos < 0) {
661                dmsg(1,("EngineChannel::SendPitchBend(): negative FragmentPos! Seems MIDI driver is buggy!"));
662            }
663            else if (pEngine) {
664                Event event             = pEngine->pEventGenerator->CreateEvent(FragmentPos);
665                event.Type              = Event::type_pitchbend;
666                event.Param.Pitch.Pitch = Pitch;
667                event.pEngineChannel    = this;
668                if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
669                else dmsg(1,("EngineChannel: Input event queue full!"));
670            }
671        }
672    
673        /**
674       *  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
675       *  continuous controller value has changed.       *  continuous controller value has changed. This method is meant for real
676         *  time rendering, that is an event will immediately be created with the
677         *  current system time as time stamp.
678       *       *
679       *  @param Controller - MIDI controller number of the occured control change       *  @param Controller - MIDI controller number of the occured control change
680       *  @param Value      - value of the control change       *  @param Value      - value of the control change
# Line 350  namespace LinuxSampler { namespace gig { Line 691  namespace LinuxSampler { namespace gig {
691          }          }
692      }      }
693    
694        /**
695         *  Will be called by the MIDIIn Thread to signal the audio thread that a
696         *  continuous controller value has changed. This method is meant for
697         *  offline rendering and / or for cases where the exact position of the
698         *  event in the current audio fragment is already known.
699         *
700         *  @param Controller  - MIDI controller number of the occured control change
701         *  @param Value       - value of the control change
702         *  @param FragmentPos - sample point position in the current audio
703         *                       fragment to which this event belongs to
704         */
705        void EngineChannel::SendControlChange(uint8_t Controller, uint8_t Value, int32_t FragmentPos) {
706            if (FragmentPos < 0) {
707                dmsg(1,("EngineChannel::SendControlChange(): negative FragmentPos! Seems MIDI driver is buggy!"));
708            }
709            else if (pEngine) {
710                Event event               = pEngine->pEventGenerator->CreateEvent(FragmentPos);
711                event.Type                = Event::type_control_change;
712                event.Param.CC.Controller = Controller;
713                event.Param.CC.Value      = Value;
714                event.pEngineChannel      = this;
715                if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
716                else dmsg(1,("EngineChannel: Input event queue full!"));
717            }
718        }
719    
720        void EngineChannel::ClearEventLists() {
721            pEvents->clear();
722            // empty MIDI key specific event lists
723            {
724                RTList<uint>::Iterator iuiKey = pActiveKeys->first();
725                RTList<uint>::Iterator end    = pActiveKeys->end();
726                for(; iuiKey != end; ++iuiKey) {
727                    pMIDIKeyInfo[*iuiKey].pEvents->clear(); // free all events on the key
728                }
729            }
730        }
731    
732        void EngineChannel::ResetControllers() {
733            Pitch          = 0;
734            SustainPedal   = false;
735            SostenutoPedal = false;
736            GlobalVolume   = 1.0f;
737            MidiVolume     = 1.0;
738            GlobalPanLeft  = 1.0f;
739            GlobalPanRight = 1.0f;
740            GlobalTranspose = 0;
741            // set all MIDI controller values to zero
742            memset(ControllerTable, 0x00, 129);
743            // reset all FX Send levels
744            for (
745                std::vector<FxSend*>::iterator iter = fxSends.begin();
746                iter != fxSends.end(); iter++
747            ) {
748                (*iter)->Reset();
749            }
750        }
751    
752        /**
753         * Copy all events from the engine channel's input event queue buffer to
754         * the internal event list. This will be done at the beginning of each
755         * audio cycle (that is each RenderAudio() call) to distinguish all
756         * events which have to be processed in the current audio cycle. Each
757         * EngineChannel has it's own input event queue for the common channel
758         * specific events (like NoteOn, NoteOff and ControlChange events).
759         * Beside that, the engine also has a input event queue for global
760         * events (usually SysEx messages).
761         *
762         * @param Samples - number of sample points to be processed in the
763         *                  current audio cycle
764         */
765        void EngineChannel::ImportEvents(uint Samples) {
766            // import events from pure software MIDI "devices"
767            // (e.g. virtual keyboard in instrument editor)
768            {
769                const int FragmentPos = 0; // randomly chosen, we don't care about jitter for virtual MIDI devices
770                Event event = pEngine->pEventGenerator->CreateEvent(FragmentPos);
771                VirtualMidiDevice::event_t devEvent; // the event format we get from the virtual MIDI device
772                // as we're going to (carefully) write some status to the
773                // synchronized struct, we cast away the const
774                ArrayList<VirtualMidiDevice*>& devices =
775                    const_cast<ArrayList<VirtualMidiDevice*>&>(virtualMidiDevicesReader_AudioThread.Lock());
776                // iterate through all virtual MIDI devices
777                for (int i = 0; i < devices.size(); i++) {
778                    VirtualMidiDevice* pDev = devices[i];
779                    // I think we can simply flush the whole FIFO(s), the user shouldn't be so fast ;-)
780                    while (pDev->GetMidiEventFromDevice(devEvent)) {
781                        event.Type =
782                            (devEvent.Type == VirtualMidiDevice::EVENT_TYPE_NOTEON) ?
783                                Event::type_note_on : Event::type_note_off;
784                        event.Param.Note.Key      = devEvent.Key;
785                        event.Param.Note.Velocity = devEvent.Velocity;
786                        event.pEngineChannel      = this;
787                        // copy event to internal event list
788                        if (pEvents->poolIsEmpty()) {
789                            dmsg(1,("Event pool emtpy!\n"));
790                            goto exitVirtualDevicesLoop;
791                        }
792                        *pEvents->allocAppend() = event;
793                    }
794                }
795            }
796            exitVirtualDevicesLoop:
797            virtualMidiDevicesReader_AudioThread.Unlock();
798    
799            // import events from the regular MIDI devices
800            RingBuffer<Event,false>::NonVolatileReader eventQueueReader = pEventQueue->get_non_volatile_reader();
801            Event* pEvent;
802            while (true) {
803                // get next event from input event queue
804                if (!(pEvent = eventQueueReader.pop())) break;
805                // if younger event reached, ignore that and all subsequent ones for now
806                if (pEvent->FragmentPos() >= Samples) {
807                    eventQueueReader--;
808                    dmsg(2,("Younger Event, pos=%d ,Samples=%d!\n",pEvent->FragmentPos(),Samples));
809                    pEvent->ResetFragmentPos();
810                    break;
811                }
812                // copy event to internal event list
813                if (pEvents->poolIsEmpty()) {
814                    dmsg(1,("Event pool emtpy!\n"));
815                    break;
816                }
817                *pEvents->allocAppend() = *pEvent;
818            }
819            eventQueueReader.free(); // free all copied events from input queue
820        }
821    
822        void EngineChannel::RemoveAllFxSends() {
823            if (pEngine) pEngine->DisableAndLock();
824            if (!fxSends.empty()) { // free local render buffers
825                if (pChannelLeft) {
826                    delete pChannelLeft;
827                    if (pEngine && pEngine->pAudioOutputDevice) {
828                        // fallback to render directly to the AudioOutputDevice's buffer
829                        pChannelLeft = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelLeft);
830                    } else pChannelLeft = NULL;
831                }
832                if (pChannelRight) {
833                    delete pChannelRight;
834                    if (pEngine && pEngine->pAudioOutputDevice) {
835                        // fallback to render directly to the AudioOutputDevice's buffer
836                        pChannelRight = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelRight);
837                    } else pChannelRight = NULL;
838                }
839            }
840            for (int i = 0; i < fxSends.size(); i++) delete fxSends[i];
841            fxSends.clear();
842            if (pEngine) pEngine->Enable();
843        }
844    
845        void EngineChannel::Connect(VirtualMidiDevice* pDevice) {
846            // double buffer ... double work ...
847            {
848                ArrayList<VirtualMidiDevice*>& devices = virtualMidiDevices.GetConfigForUpdate();
849                devices.add(pDevice);
850            }
851            {
852                ArrayList<VirtualMidiDevice*>& devices = virtualMidiDevices.SwitchConfig();
853                devices.add(pDevice);
854            }
855        }
856    
857        void EngineChannel::Disconnect(VirtualMidiDevice* pDevice) {
858            // double buffer ... double work ...
859            {
860                ArrayList<VirtualMidiDevice*>& devices = virtualMidiDevices.GetConfigForUpdate();
861                devices.remove(pDevice);
862            }
863            {
864                ArrayList<VirtualMidiDevice*>& devices = virtualMidiDevices.SwitchConfig();
865                devices.remove(pDevice);
866            }
867        }
868    
869      float EngineChannel::Volume() {      float EngineChannel::Volume() {
870          return GlobalVolume;          return GlobalVolume;
871      }      }
872    
873      void EngineChannel::Volume(float f) {      void EngineChannel::Volume(float f) {
874          GlobalVolume = f;          GlobalVolume = f;
875            bStatusChanged = true; // status of engine channel has changed, so set notify flag
876      }      }
877    
878      uint EngineChannel::Channels() {      uint EngineChannel::Channels() {
# Line 376  namespace LinuxSampler { namespace gig { Line 893  namespace LinuxSampler { namespace gig {
893    
894      int EngineChannel::InstrumentStatus() {      int EngineChannel::InstrumentStatus() {
895          return InstrumentStat;          return InstrumentStat;
896      }          }
897    
898        String EngineChannel::EngineName() {
899            return LS_GIG_ENGINE_NAME;
900        }
901    
902  }} // namespace LinuxSampler::gig  }} // namespace LinuxSampler::gig
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