/[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 424 by schoenebeck, Fri Mar 4 22:54:11 2005 UTC revision 1653 by schoenebeck, Wed Jan 30 01:51:46 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          pMIDIKeyInfo = new midi_key_info_t[128];          pMIDIKeyInfo = new midi_key_info_t[128];
33          pEngine      = NULL;          pEngine      = NULL;
34          pInstrument  = NULL;          pInstrument  = NULL;
35          pEventQueue  = new RingBuffer<Event>(MAX_EVENTS_PER_FRAGMENT, 0);                  pEvents      = NULL; // we allocate when we retrieve the right Engine object
36            pEventQueue  = new RingBuffer<Event,false>(CONFIG_MAX_EVENTS_PER_FRAGMENT, 0);
37          pActiveKeys  = new Pool<uint>(128);          pActiveKeys  = new Pool<uint>(128);
38          for (uint i = 0; i < 128; i++) {          for (uint i = 0; i < 128; i++) {
39              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 41  namespace LinuxSampler { namespace gig {
41              pMIDIKeyInfo[i].Active         = false;              pMIDIKeyInfo[i].Active         = false;
42              pMIDIKeyInfo[i].ReleaseTrigger = false;              pMIDIKeyInfo[i].ReleaseTrigger = false;
43              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
44                pMIDIKeyInfo[i].VoiceTheftsQueued = 0;
45                pMIDIKeyInfo[i].RoundRobinIndex = 0;
46          }          }
47          InstrumentIdx  = -1;          InstrumentIdx  = -1;
48          InstrumentStat = -1;          InstrumentStat = -1;
49            pChannelLeft  = NULL;
50            pChannelRight = NULL;
51          AudioDeviceChannelLeft  = -1;          AudioDeviceChannelLeft  = -1;
52          AudioDeviceChannelRight = -1;          AudioDeviceChannelRight = -1;
53            pMidiInputPort = NULL;
54            midiChannel = midi_chan_all;
55            ResetControllers();
56            SoloMode       = false;
57            PortamentoMode = false;
58            PortamentoTime = CONFIG_PORTAMENTO_TIME_DEFAULT;
59      }      }
60    
61      EngineChannel::~EngineChannel() {      EngineChannel::~EngineChannel() {
62          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;  
             }  
         }  
63          if (pEventQueue) delete pEventQueue;          if (pEventQueue) delete pEventQueue;
64          if (pActiveKeys) delete pActiveKeys;          if (pActiveKeys) delete pActiveKeys;
65          if (pMIDIKeyInfo) delete[] pMIDIKeyInfo;          if (pMIDIKeyInfo) delete[] pMIDIKeyInfo;
66            RemoveAllFxSends();
67        }
68    
69        /**
70         * Implementation of virtual method from abstract EngineChannel interface.
71         * This method will periodically be polled (e.g. by the LSCP server) to
72         * check if some engine channel parameter has changed since the last
73         * StatusChanged() call.
74         *
75         * This method can also be used to mark the engine channel as changed
76         * from outside, e.g. by a MIDI input device. The optional argument
77         * \a nNewStatus can be used for this.
78         *
79         * TODO: This "poll method" is just a lazy solution and might be
80         *       replaced in future.
81         * @param bNewStatus - (optional, default: false) sets the new status flag
82         * @returns true if engine channel status has changed since last
83         *          StatusChanged() call
84         */
85        bool EngineChannel::StatusChanged(bool bNewStatus) {
86            bool b = bStatusChanged;
87            bStatusChanged = bNewStatus;
88            return b;
89        }
90    
91        void EngineChannel::Reset() {
92            if (pEngine) pEngine->DisableAndLock();
93            ResetInternal();
94            ResetControllers();
95            if (pEngine) {
96                pEngine->Enable();
97                pEngine->Reset();
98            }
99      }      }
100    
101      /**      /**
102       * This method is not thread safe!       * This method is not thread safe!
103       */       */
104      void EngineChannel::ResetInternal() {      void EngineChannel::ResetInternal() {
         Pitch               = 0;  
         SustainPedal        = false;  
         GlobalVolume        = 1.0;  
         GlobalPanLeft       = 1.0f;  
         GlobalPanRight      = 1.0f;  
105          CurrentKeyDimension = 0;          CurrentKeyDimension = 0;
106    
         // set all MIDI controller values to zero  
         memset(ControllerTable, 0x00, 128);  
   
         // reset voice stealing parameters  
         itLastStolenVoice = RTList<Voice>::Iterator();  
         iuiLastStolenKey  = RTList<uint>::Iterator();  
   
107          // reset key info          // reset key info
108          for (uint i = 0; i < 128; i++) {          for (uint i = 0; i < 128; i++) {
109              if (pMIDIKeyInfo[i].pActiveVoices)              if (pMIDIKeyInfo[i].pActiveVoices)
# Line 89  namespace LinuxSampler { namespace gig { Line 114  namespace LinuxSampler { namespace gig {
114              pMIDIKeyInfo[i].Active         = false;              pMIDIKeyInfo[i].Active         = false;
115              pMIDIKeyInfo[i].ReleaseTrigger = false;              pMIDIKeyInfo[i].ReleaseTrigger = false;
116              pMIDIKeyInfo[i].itSelf         = Pool<uint>::Iterator();              pMIDIKeyInfo[i].itSelf         = Pool<uint>::Iterator();
117                pMIDIKeyInfo[i].VoiceTheftsQueued = 0;
118          }          }
119            SoloKey       = -1;    // no solo key active yet
120            PortamentoPos = -1.0f; // no portamento active yet
121    
122          // reset all key groups          // reset all key groups
123          std::map<uint,uint*>::iterator iter = ActiveKeyGroups.begin();          std::map<uint,uint*>::iterator iter = ActiveKeyGroups.begin();
# Line 102  namespace LinuxSampler { namespace gig { Line 130  namespace LinuxSampler { namespace gig {
130          pEventQueue->init();          pEventQueue->init();
131    
132          if (pEngine) pEngine->ResetInternal();          if (pEngine) pEngine->ResetInternal();
133    
134            // status of engine channel has changed, so set notify flag
135            bStatusChanged = true;
136      }      }
137    
138      LinuxSampler::Engine* EngineChannel::GetEngine() {      LinuxSampler::Engine* EngineChannel::GetEngine() {
# Line 130  namespace LinuxSampler { namespace gig { Line 161  namespace LinuxSampler { namespace gig {
161       * This method will then actually start to load the instrument and block       * This method will then actually start to load the instrument and block
162       * the calling thread until loading was completed.       * the calling thread until loading was completed.
163       *       *
      * @returns detailed description of the method call result  
164       * @see PrepareLoadInstrument()       * @see PrepareLoadInstrument()
165       */       */
166      void EngineChannel::LoadInstrument() {      void EngineChannel::LoadInstrument() {
167            // make sure we don't trigger any new notes with an old
168          if (pEngine) pEngine->DisableAndLock();          // instrument
169                    instrument_change_command_t& cmd = ChangeInstrument(0);
170          ResetInternal();          if (cmd.pInstrument) {
171                        // give old instrument back to instrument manager, but
172          // free old instrument              // keep the dimension regions and samples that are in use
173          if (pInstrument) {              Engine::instruments.HandBackInstrument(cmd.pInstrument, this, cmd.pDimRegionsInUse);
             // give old instrument back to instrument manager  
             Engine::instruments.HandBack(pInstrument, this);  
174          }          }
175            cmd.pDimRegionsInUse->clear();
176    
177          // delete all key groups          // delete all key groups
178          ActiveKeyGroups.clear();          ActiveKeyGroups.clear();
179    
180          // request gig instrument from instrument manager          // request gig instrument from instrument manager
181            ::gig::Instrument* newInstrument;
182          try {          try {
183              instrument_id_t instrid;              InstrumentManager::instrument_id_t instrid;
184              instrid.FileName    = InstrumentFile;              instrid.FileName  = InstrumentFile;
185              instrid.iInstrument = InstrumentIdx;              instrid.Index     = InstrumentIdx;
186              pInstrument = Engine::instruments.Borrow(instrid, this);              newInstrument = Engine::instruments.Borrow(instrid, this);
187              if (!pInstrument) {              if (!newInstrument) {
188                  InstrumentStat = -1;                  throw InstrumentManagerException("resource was not created");
                 dmsg(1,("no instrument loaded!!!\n"));  
                 exit(EXIT_FAILURE);  
189              }              }
190          }          }
191          catch (RIFF::Exception e) {          catch (RIFF::Exception e) {
192              InstrumentStat = -2;              InstrumentStat = -2;
193                StatusChanged(true);
194              String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message;              String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message;
195              throw LinuxSamplerException(msg);              throw Exception(msg);
196          }          }
197          catch (InstrumentResourceManagerException e) {          catch (InstrumentManagerException e) {
198              InstrumentStat = -3;              InstrumentStat = -3;
199                StatusChanged(true);
200              String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message();              String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message();
201              throw LinuxSamplerException(msg);              throw Exception(msg);
202          }          }
203          catch (...) {          catch (...) {
204              InstrumentStat = -4;              InstrumentStat = -4;
205              throw LinuxSamplerException("gig::Engine error: Failed to load instrument, cause: Unknown exception while trying to parse gig file.");              StatusChanged(true);
206                throw Exception("gig::Engine error: Failed to load instrument, cause: Unknown exception while trying to parse gig file.");
207          }          }
208    
209          // rebuild ActiveKeyGroups map with key groups of current instrument          // rebuild ActiveKeyGroups map with key groups of current instrument
210          for (::gig::Region* pRegion = pInstrument->GetFirstRegion(); pRegion; pRegion = pInstrument->GetNextRegion())          for (::gig::Region* pRegion = newInstrument->GetFirstRegion(); pRegion; pRegion = newInstrument->GetNextRegion())
211              if (pRegion->KeyGroup) ActiveKeyGroups[pRegion->KeyGroup] = NULL;              if (pRegion->KeyGroup) ActiveKeyGroups[pRegion->KeyGroup] = NULL;
212    
213          InstrumentIdxName = pInstrument->pInfo->Name;          InstrumentIdxName = newInstrument->pInfo->Name;
214          InstrumentStat = 100;          InstrumentStat = 100;
215    
216          // 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);  
         }  
217    
218          if (pEngine) pEngine->Enable();          StatusChanged(true);
219        }
220    
221    
222        /**
223         * Changes the instrument for an engine channel.
224         *
225         * @param pInstrument - new instrument
226         * @returns the resulting instrument change command after the
227         *          command switch, containing the old instrument and
228         *          the dimregions it is using
229         */
230        EngineChannel::instrument_change_command_t& EngineChannel::ChangeInstrument(::gig::Instrument* pInstrument) {
231            instrument_change_command_t& cmd = InstrumentChangeCommand.GetConfigForUpdate();
232            cmd.pInstrument = pInstrument;
233            cmd.bChangeInstrument = true;
234    
235            return InstrumentChangeCommand.SwitchConfig();
236      }      }
237    
238      /**      /**
239       * Will be called by the InstrumentResourceManager when the instrument       * Will be called by the InstrumentResourceManager when the instrument
240       * 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,
241       * can stop playback before that happens.       * so we can stop playback before that happens.
242       */       */
243      void EngineChannel::ResourceToBeUpdated(::gig::Instrument* pResource, void*& pUpdateArg) {      void EngineChannel::ResourceToBeUpdated(::gig::Instrument* pResource, void*& pUpdateArg) {
244          dmsg(3,("gig::Engine: Received instrument update message.\n"));          dmsg(3,("gig::Engine: Received instrument update message.\n"));
# Line 214  namespace LinuxSampler { namespace gig { Line 254  namespace LinuxSampler { namespace gig {
254      void EngineChannel::ResourceUpdated(::gig::Instrument* pOldResource, ::gig::Instrument* pNewResource, void* pUpdateArg) {      void EngineChannel::ResourceUpdated(::gig::Instrument* pOldResource, ::gig::Instrument* pNewResource, void* pUpdateArg) {
255          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())
256          if (pEngine) pEngine->Enable();          if (pEngine) pEngine->Enable();
257            bStatusChanged = true; // status of engine has changed, so set notify flag
258        }
259    
260        /**
261         * Will be called by the InstrumentResourceManager on progress changes
262         * while loading or realoading an instrument for this EngineChannel.
263         *
264         * @param fProgress - current progress as value between 0.0 and 1.0
265         */
266        void EngineChannel::OnResourceProgress(float fProgress) {
267            this->InstrumentStat = int(fProgress * 100.0f);
268            dmsg(7,("gig::EngineChannel: progress %d%", InstrumentStat));
269            bStatusChanged = true; // status of engine has changed, so set notify flag
270      }      }
271    
272      void EngineChannel::Connect(AudioOutputDevice* pAudioOut) {      void EngineChannel::Connect(AudioOutputDevice* pAudioOut) {
273          if (pEngine && pEngine->pAudioOutputDevice != pAudioOut) {          if (pEngine) {
274                if (pEngine->pAudioOutputDevice == pAudioOut) return;
275              DisconnectAudioOutputDevice();              DisconnectAudioOutputDevice();
276          }          }
277          pEngine = Engine::AcquireEngine(this, pAudioOut);          pEngine = Engine::AcquireEngine(this, pAudioOut);
278          ResetInternal();                  ResetInternal();
279            pEvents = new RTList<Event>(pEngine->pEventPool);
280    
281            // reset the instrument change command struct (need to be done
282            // twice, as it is double buffered)
283            {
284                instrument_change_command_t& cmd = InstrumentChangeCommand.GetConfigForUpdate();
285                cmd.pDimRegionsInUse = new RTList< ::gig::DimensionRegion*>(pEngine->pDimRegionPool[0]);
286                cmd.pInstrument = 0;
287                cmd.bChangeInstrument = false;
288            }
289            {
290                instrument_change_command_t& cmd = InstrumentChangeCommand.SwitchConfig();
291                cmd.pDimRegionsInUse = new RTList< ::gig::DimensionRegion*>(pEngine->pDimRegionPool[1]);
292                cmd.pInstrument = 0;
293                cmd.bChangeInstrument = false;
294            }
295    
296          for (uint i = 0; i < 128; i++) {          for (uint i = 0; i < 128; i++) {
297              pMIDIKeyInfo[i].pActiveVoices = new RTList<Voice>(pEngine->pVoicePool);              pMIDIKeyInfo[i].pActiveVoices = new RTList<Voice>(pEngine->pVoicePool);
298              pMIDIKeyInfo[i].pEvents       = new RTList<Event>(pEngine->pEventPool);              pMIDIKeyInfo[i].pEvents       = new RTList<Event>(pEngine->pEventPool);
299          }          }
300          AudioDeviceChannelLeft  = 0;          AudioDeviceChannelLeft  = 0;
301          AudioDeviceChannelRight = 1;          AudioDeviceChannelRight = 1;
302          pOutputLeft             = pAudioOut->Channel(0)->Buffer();          if (fxSends.empty()) { // render directly into the AudioDevice's output buffers
303          pOutputRight            = pAudioOut->Channel(1)->Buffer();              pChannelLeft  = pAudioOut->Channel(AudioDeviceChannelLeft);
304                pChannelRight = pAudioOut->Channel(AudioDeviceChannelRight);
305            } else { // use local buffers for rendering and copy later
306                // ensure the local buffers have the correct size
307                if (pChannelLeft)  delete pChannelLeft;
308                if (pChannelRight) delete pChannelRight;
309                pChannelLeft  = new AudioChannel(0, pAudioOut->MaxSamplesPerCycle());
310                pChannelRight = new AudioChannel(1, pAudioOut->MaxSamplesPerCycle());
311            }
312            if (pEngine->EngineDisabled.GetUnsafe()) pEngine->Enable();
313            MidiInputPort::AddSysexListener(pEngine);
314      }      }
315    
316      void EngineChannel::DisconnectAudioOutputDevice() {      void EngineChannel::DisconnectAudioOutputDevice() {
317          if (pEngine) { // if clause to prevent disconnect loops          if (pEngine) { // if clause to prevent disconnect loops
318    
319                // delete the structures used for instrument change
320                RTList< ::gig::DimensionRegion*>* d = InstrumentChangeCommand.GetConfigForUpdate().pDimRegionsInUse;
321                if (d) delete d;
322                EngineChannel::instrument_change_command_t& cmd = InstrumentChangeCommand.SwitchConfig();
323                d = cmd.pDimRegionsInUse;
324    
325                if (cmd.pInstrument) {
326                    // release the currently loaded instrument
327                    Engine::instruments.HandBackInstrument(cmd.pInstrument, this, d);
328                }
329                if (d) delete d;
330    
331                // release all active dimension regions to resource
332                // manager
333                RTList<uint>::Iterator iuiKey = pActiveKeys->first();
334                RTList<uint>::Iterator end    = pActiveKeys->end();
335                while (iuiKey != end) { // iterate through all active keys
336                    midi_key_info_t* pKey = &pMIDIKeyInfo[*iuiKey];
337                    ++iuiKey;
338    
339                    RTList<Voice>::Iterator itVoice     = pKey->pActiveVoices->first();
340                    RTList<Voice>::Iterator itVoicesEnd = pKey->pActiveVoices->end();
341                    for (; itVoice != itVoicesEnd; ++itVoice) { // iterate through all voices on this key
342                        Engine::instruments.HandBackDimReg(itVoice->pDimRgn);
343                    }
344                }
345    
346              ResetInternal();              ResetInternal();
347                if (pEvents) {
348                    delete pEvents;
349                    pEvents = NULL;
350                }
351              for (uint i = 0; i < 128; i++) {              for (uint i = 0; i < 128; i++) {
352                  if (pMIDIKeyInfo[i].pActiveVoices) {                  if (pMIDIKeyInfo[i].pActiveVoices) {
353                      delete pMIDIKeyInfo[i].pActiveVoices;                      delete pMIDIKeyInfo[i].pActiveVoices;
# Line 250  namespace LinuxSampler { namespace gig { Line 363  namespace LinuxSampler { namespace gig {
363              pEngine = NULL;              pEngine = NULL;
364              Engine::FreeEngine(this, oldAudioDevice);              Engine::FreeEngine(this, oldAudioDevice);
365              AudioDeviceChannelLeft  = -1;              AudioDeviceChannelLeft  = -1;
366              AudioDeviceChannelRight = -1;                          AudioDeviceChannelRight = -1;
367                if (!fxSends.empty()) { // free the local rendering buffers
368                    if (pChannelLeft)  delete pChannelLeft;
369                    if (pChannelRight) delete pChannelRight;
370                }
371                pChannelLeft  = NULL;
372                pChannelRight = NULL;
373          }          }
374      }      }
375    
376        AudioOutputDevice* EngineChannel::GetAudioOutputDevice() {
377            return (pEngine) ? pEngine->pAudioOutputDevice : NULL;
378        }
379    
380      void EngineChannel::SetOutputChannel(uint EngineAudioChannel, uint AudioDeviceChannel) {      void EngineChannel::SetOutputChannel(uint EngineAudioChannel, uint AudioDeviceChannel) {
381          if (!pEngine || !pEngine->pAudioOutputDevice) throw AudioOutputException("No audio output device connected yet.");          if (!pEngine || !pEngine->pAudioOutputDevice) throw AudioOutputException("No audio output device connected yet.");
382            
383          AudioChannel* pChannel = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannel);          AudioChannel* pChannel = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannel);
384          if (!pChannel) throw AudioOutputException("Invalid audio output device channel " + ToString(AudioDeviceChannel));          if (!pChannel) throw AudioOutputException("Invalid audio output device channel " + ToString(AudioDeviceChannel));
385          switch (EngineAudioChannel) {          switch (EngineAudioChannel) {
386              case 0: // left output channel              case 0: // left output channel
387                  pOutputLeft = pChannel->Buffer();                  if (fxSends.empty()) pChannelLeft = pChannel;
388                  AudioDeviceChannelLeft = AudioDeviceChannel;                  AudioDeviceChannelLeft = AudioDeviceChannel;
389                  break;                  break;
390              case 1: // right output channel              case 1: // right output channel
391                  pOutputRight = pChannel->Buffer();                  if (fxSends.empty()) pChannelRight = pChannel;
392                  AudioDeviceChannelRight = AudioDeviceChannel;                  AudioDeviceChannelRight = AudioDeviceChannel;
393                  break;                  break;
394              default:              default:
395                  throw AudioOutputException("Invalid engine audio channel " + ToString(EngineAudioChannel));                  throw AudioOutputException("Invalid engine audio channel " + ToString(EngineAudioChannel));
396          }          }
397    
398            bStatusChanged = true;
399      }      }
400    
401      int EngineChannel::OutputChannel(uint EngineAudioChannel) {      int EngineChannel::OutputChannel(uint EngineAudioChannel) {
# Line 284  namespace LinuxSampler { namespace gig { Line 409  namespace LinuxSampler { namespace gig {
409          }          }
410      }      }
411    
412        void EngineChannel::Connect(MidiInputPort* pMidiPort, midi_chan_t MidiChannel) {
413            if (!pMidiPort || pMidiPort == this->pMidiInputPort) return;
414            DisconnectMidiInputPort();
415            this->pMidiInputPort = pMidiPort;
416            this->midiChannel    = MidiChannel;
417            pMidiPort->Connect(this, MidiChannel);
418        }
419    
420        void EngineChannel::DisconnectMidiInputPort() {
421            MidiInputPort* pOldPort = this->pMidiInputPort;
422            this->pMidiInputPort = NULL;
423            if (pOldPort) pOldPort->Disconnect(this);
424        }
425    
426        MidiInputPort* EngineChannel::GetMidiInputPort() {
427            return pMidiInputPort;
428        }
429    
430        midi_chan_t EngineChannel::MidiChannel() {
431            return midiChannel;
432        }
433    
434        FxSend* EngineChannel::AddFxSend(uint8_t MidiCtrl, String Name) throw (Exception) {
435            if (pEngine) pEngine->DisableAndLock();
436            FxSend* pFxSend = new FxSend(this, MidiCtrl, Name);
437            if (fxSends.empty()) {
438                if (pEngine && pEngine->pAudioOutputDevice) {
439                    AudioOutputDevice* pDevice = pEngine->pAudioOutputDevice;
440                    // create local render buffers
441                    pChannelLeft  = new AudioChannel(0, pDevice->MaxSamplesPerCycle());
442                    pChannelRight = new AudioChannel(1, pDevice->MaxSamplesPerCycle());
443                } else {
444                    // postpone local render buffer creation until audio device is assigned
445                    pChannelLeft  = NULL;
446                    pChannelRight = NULL;
447                }
448            }
449            fxSends.push_back(pFxSend);
450            if (pEngine) pEngine->Enable();
451            fireFxSendCountChanged(iSamplerChannelIndex, GetFxSendCount());
452    
453            return pFxSend;
454        }
455    
456        FxSend* EngineChannel::GetFxSend(uint FxSendIndex) {
457            return (FxSendIndex < fxSends.size()) ? fxSends[FxSendIndex] : NULL;
458        }
459    
460        uint EngineChannel::GetFxSendCount() {
461            return fxSends.size();
462        }
463    
464        void EngineChannel::RemoveFxSend(FxSend* pFxSend) {
465            if (pEngine) pEngine->DisableAndLock();
466            for (
467                std::vector<FxSend*>::iterator iter = fxSends.begin();
468                iter != fxSends.end(); iter++
469            ) {
470                if (*iter == pFxSend) {
471                    delete pFxSend;
472                    fxSends.erase(iter);
473                    if (fxSends.empty()) {
474                        // destroy local render buffers
475                        if (pChannelLeft)  delete pChannelLeft;
476                        if (pChannelRight) delete pChannelRight;
477                        // fallback to render directly into AudioOutputDevice's buffers
478                        if (pEngine && pEngine->pAudioOutputDevice) {
479                            pChannelLeft  = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelLeft);
480                            pChannelRight = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelRight);
481                        } else { // we update the pointers later
482                            pChannelLeft  = NULL;
483                            pChannelRight = NULL;
484                        }
485                    }
486                    break;
487                }
488            }
489            if (pEngine) pEngine->Enable();
490            fireFxSendCountChanged(iSamplerChannelIndex, GetFxSendCount());
491        }
492    
493      /**      /**
494       *  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
495       *  voice for the given key.       *  voice for the given key. This method is meant for real time rendering,
496         *  that is an event will immediately be created with the current system
497         *  time as time stamp.
498       *       *
499       *  @param Key      - MIDI key number of the triggered key       *  @param Key      - MIDI key number of the triggered key
500       *  @param Velocity - MIDI velocity value of the triggered key       *  @param Velocity - MIDI velocity value of the triggered key
# Line 297  namespace LinuxSampler { namespace gig { Line 505  namespace LinuxSampler { namespace gig {
505              event.Type                = Event::type_note_on;              event.Type                = Event::type_note_on;
506              event.Param.Note.Key      = Key;              event.Param.Note.Key      = Key;
507              event.Param.Note.Velocity = Velocity;              event.Param.Note.Velocity = Velocity;
508              event.pEngineChannel      = this;                          event.pEngineChannel      = this;
509                if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
510                else dmsg(1,("EngineChannel: Input event queue full!"));
511                // inform instrument editor(s), if any ...
512                pEngine->instruments.TrySendNoteOnToEditors(Key, Velocity, pInstrument);
513            }
514        }
515    
516        /**
517         *  Will be called by the MIDIIn Thread to let the audio thread trigger a new
518         *  voice for the given key. This method is meant for offline rendering
519         *  and / or for cases where the exact position of the event in the current
520         *  audio fragment is already known.
521         *
522         *  @param Key         - MIDI key number of the triggered key
523         *  @param Velocity    - MIDI velocity value of the triggered key
524         *  @param FragmentPos - sample point position in the current audio
525         *                       fragment to which this event belongs to
526         */
527        void EngineChannel::SendNoteOn(uint8_t Key, uint8_t Velocity, int32_t FragmentPos) {
528            if (FragmentPos < 0) {
529                dmsg(1,("EngineChannel::SendNoteOn(): negative FragmentPos! Seems MIDI driver is buggy!"));
530            }
531            else if (pEngine) {
532                Event event               = pEngine->pEventGenerator->CreateEvent(FragmentPos);
533                event.Type                = Event::type_note_on;
534                event.Param.Note.Key      = Key;
535                event.Param.Note.Velocity = Velocity;
536                event.pEngineChannel      = this;
537              if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);              if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
538              else dmsg(1,("EngineChannel: Input event queue full!"));              else dmsg(1,("EngineChannel: Input event queue full!"));
539                // inform instrument editor(s), if any ...
540                pEngine->instruments.TrySendNoteOnToEditors(Key, Velocity, pInstrument);
541          }          }
542      }      }
543    
544      /**      /**
545       *  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
546       *  voice(s) on the given key.       *  voice(s) on the given key. This method is meant for real time rendering,
547         *  that is an event will immediately be created with the current system
548         *  time as time stamp.
549       *       *
550       *  @param Key      - MIDI key number of the released key       *  @param Key      - MIDI key number of the released key
551       *  @param Velocity - MIDI release velocity value of the released key       *  @param Velocity - MIDI release velocity value of the released key
# Line 319  namespace LinuxSampler { namespace gig { Line 559  namespace LinuxSampler { namespace gig {
559              event.pEngineChannel      = this;              event.pEngineChannel      = this;
560              if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);              if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
561              else dmsg(1,("EngineChannel: Input event queue full!"));              else dmsg(1,("EngineChannel: Input event queue full!"));
562                // inform instrument editor(s), if any ...
563                pEngine->instruments.TrySendNoteOffToEditors(Key, Velocity, pInstrument);
564            }
565        }
566    
567        /**
568         *  Will be called by the MIDIIn Thread to signal the audio thread to release
569         *  voice(s) on the given key. This method is meant for offline rendering
570         *  and / or for cases where the exact position of the event in the current
571         *  audio fragment is already known.
572         *
573         *  @param Key         - MIDI key number of the released key
574         *  @param Velocity    - MIDI release velocity value of the released key
575         *  @param FragmentPos - sample point position in the current audio
576         *                       fragment to which this event belongs to
577         */
578        void EngineChannel::SendNoteOff(uint8_t Key, uint8_t Velocity, int32_t FragmentPos) {
579            if (FragmentPos < 0) {
580                dmsg(1,("EngineChannel::SendNoteOff(): negative FragmentPos! Seems MIDI driver is buggy!"));
581            }
582            else if (pEngine) {
583                Event event               = pEngine->pEventGenerator->CreateEvent(FragmentPos);
584                event.Type                = Event::type_note_off;
585                event.Param.Note.Key      = Key;
586                event.Param.Note.Velocity = Velocity;
587                event.pEngineChannel      = this;
588                if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
589                else dmsg(1,("EngineChannel: Input event queue full!"));
590                // inform instrument editor(s), if any ...
591                pEngine->instruments.TrySendNoteOffToEditors(Key, Velocity, pInstrument);
592          }          }
593      }      }
594    
595      /**      /**
596       *  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
597       *  the pitch value for all voices.       *  the pitch value for all voices. This method is meant for real time
598         *  rendering, that is an event will immediately be created with the
599         *  current system time as time stamp.
600       *       *
601       *  @param Pitch - MIDI pitch value (-8192 ... +8191)       *  @param Pitch - MIDI pitch value (-8192 ... +8191)
602       */       */
603      void EngineChannel::SendPitchbend(int Pitch) {      void EngineChannel::SendPitchbend(int Pitch) {
604          if (pEngine) {                  if (pEngine) {
605              Event event             = pEngine->pEventGenerator->CreateEvent();              Event event             = pEngine->pEventGenerator->CreateEvent();
606              event.Type              = Event::type_pitchbend;              event.Type              = Event::type_pitchbend;
607              event.Param.Pitch.Pitch = Pitch;              event.Param.Pitch.Pitch = Pitch;
# Line 340  namespace LinuxSampler { namespace gig { Line 612  namespace LinuxSampler { namespace gig {
612      }      }
613    
614      /**      /**
615         *  Will be called by the MIDIIn Thread to signal the audio thread to change
616         *  the pitch value for all voices. This method is meant for offline
617         *  rendering and / or for cases where the exact position of the event in
618         *  the current audio fragment is already known.
619         *
620         *  @param Pitch       - MIDI pitch value (-8192 ... +8191)
621         *  @param FragmentPos - sample point position in the current audio
622         *                       fragment to which this event belongs to
623         */
624        void EngineChannel::SendPitchbend(int Pitch, int32_t FragmentPos) {
625            if (FragmentPos < 0) {
626                dmsg(1,("EngineChannel::SendPitchBend(): negative FragmentPos! Seems MIDI driver is buggy!"));
627            }
628            else if (pEngine) {
629                Event event             = pEngine->pEventGenerator->CreateEvent(FragmentPos);
630                event.Type              = Event::type_pitchbend;
631                event.Param.Pitch.Pitch = Pitch;
632                event.pEngineChannel    = this;
633                if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
634                else dmsg(1,("EngineChannel: Input event queue full!"));
635            }
636        }
637    
638        /**
639       *  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
640       *  continuous controller value has changed.       *  continuous controller value has changed. This method is meant for real
641         *  time rendering, that is an event will immediately be created with the
642         *  current system time as time stamp.
643       *       *
644       *  @param Controller - MIDI controller number of the occured control change       *  @param Controller - MIDI controller number of the occured control change
645       *  @param Value      - value of the control change       *  @param Value      - value of the control change
# Line 358  namespace LinuxSampler { namespace gig { Line 656  namespace LinuxSampler { namespace gig {
656          }          }
657      }      }
658    
659        /**
660         *  Will be called by the MIDIIn Thread to signal the audio thread that a
661         *  continuous controller value has changed. This method is meant for
662         *  offline rendering and / or for cases where the exact position of the
663         *  event in the current audio fragment is already known.
664         *
665         *  @param Controller  - MIDI controller number of the occured control change
666         *  @param Value       - value of the control change
667         *  @param FragmentPos - sample point position in the current audio
668         *                       fragment to which this event belongs to
669         */
670        void EngineChannel::SendControlChange(uint8_t Controller, uint8_t Value, int32_t FragmentPos) {
671            if (FragmentPos < 0) {
672                dmsg(1,("EngineChannel::SendControlChange(): negative FragmentPos! Seems MIDI driver is buggy!"));
673            }
674            else if (pEngine) {
675                Event event               = pEngine->pEventGenerator->CreateEvent(FragmentPos);
676                event.Type                = Event::type_control_change;
677                event.Param.CC.Controller = Controller;
678                event.Param.CC.Value      = Value;
679                event.pEngineChannel      = this;
680                if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event);
681                else dmsg(1,("EngineChannel: Input event queue full!"));
682            }
683        }
684    
685        void EngineChannel::ClearEventLists() {
686            pEvents->clear();
687            // empty MIDI key specific event lists
688            {
689                RTList<uint>::Iterator iuiKey = pActiveKeys->first();
690                RTList<uint>::Iterator end    = pActiveKeys->end();
691                for(; iuiKey != end; ++iuiKey) {
692                    pMIDIKeyInfo[*iuiKey].pEvents->clear(); // free all events on the key
693                }
694            }
695        }
696    
697        void EngineChannel::ResetControllers() {
698            Pitch          = 0;
699            SustainPedal   = false;
700            SostenutoPedal = false;
701            GlobalVolume   = 1.0f;
702            MidiVolume     = 1.0;
703            GlobalPanLeft  = 1.0f;
704            GlobalPanRight = 1.0f;
705            GlobalTranspose = 0;
706            // set all MIDI controller values to zero
707            memset(ControllerTable, 0x00, 129);
708            // reset all FX Send levels
709            for (
710                std::vector<FxSend*>::iterator iter = fxSends.begin();
711                iter != fxSends.end(); iter++
712            ) {
713                (*iter)->Reset();
714            }
715        }
716    
717        /**
718         * Copy all events from the engine channel's input event queue buffer to
719         * the internal event list. This will be done at the beginning of each
720         * audio cycle (that is each RenderAudio() call) to distinguish all
721         * events which have to be processed in the current audio cycle. Each
722         * EngineChannel has it's own input event queue for the common channel
723         * specific events (like NoteOn, NoteOff and ControlChange events).
724         * Beside that, the engine also has a input event queue for global
725         * events (usually SysEx messages).
726         *
727         * @param Samples - number of sample points to be processed in the
728         *                  current audio cycle
729         */
730        void EngineChannel::ImportEvents(uint Samples) {
731            RingBuffer<Event,false>::NonVolatileReader eventQueueReader = pEventQueue->get_non_volatile_reader();
732            Event* pEvent;
733            while (true) {
734                // get next event from input event queue
735                if (!(pEvent = eventQueueReader.pop())) break;
736                // if younger event reached, ignore that and all subsequent ones for now
737                if (pEvent->FragmentPos() >= Samples) {
738                    eventQueueReader--;
739                    dmsg(2,("Younger Event, pos=%d ,Samples=%d!\n",pEvent->FragmentPos(),Samples));
740                    pEvent->ResetFragmentPos();
741                    break;
742                }
743                // copy event to internal event list
744                if (pEvents->poolIsEmpty()) {
745                    dmsg(1,("Event pool emtpy!\n"));
746                    break;
747                }
748                *pEvents->allocAppend() = *pEvent;
749            }
750            eventQueueReader.free(); // free all copied events from input queue
751        }
752    
753        void EngineChannel::RemoveAllFxSends() {
754            if (pEngine) pEngine->DisableAndLock();
755            if (!fxSends.empty()) { // free local render buffers
756                if (pChannelLeft) {
757                    delete pChannelLeft;
758                    if (pEngine && pEngine->pAudioOutputDevice) {
759                        // fallback to render directly to the AudioOutputDevice's buffer
760                        pChannelLeft = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelLeft);
761                    } else pChannelLeft = NULL;
762                }
763                if (pChannelRight) {
764                    delete pChannelRight;
765                    if (pEngine && pEngine->pAudioOutputDevice) {
766                        // fallback to render directly to the AudioOutputDevice's buffer
767                        pChannelRight = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelRight);
768                    } else pChannelRight = NULL;
769                }
770            }
771            for (int i = 0; i < fxSends.size(); i++) delete fxSends[i];
772            fxSends.clear();
773            if (pEngine) pEngine->Enable();
774        }
775    
776      float EngineChannel::Volume() {      float EngineChannel::Volume() {
777          return GlobalVolume;          return GlobalVolume;
778      }      }
779    
780      void EngineChannel::Volume(float f) {      void EngineChannel::Volume(float f) {
781          GlobalVolume = f;          GlobalVolume = f;
782            bStatusChanged = true; // status of engine channel has changed, so set notify flag
783      }      }
784    
785      uint EngineChannel::Channels() {      uint EngineChannel::Channels() {
# Line 384  namespace LinuxSampler { namespace gig { Line 800  namespace LinuxSampler { namespace gig {
800    
801      int EngineChannel::InstrumentStatus() {      int EngineChannel::InstrumentStatus() {
802          return InstrumentStat;          return InstrumentStat;
803      }          }
804    
805        String EngineChannel::EngineName() {
806            return LS_GIG_ENGINE_NAME;
807        }
808    
809  }} // namespace LinuxSampler::gig  }} // namespace LinuxSampler::gig
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