/[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 970 by schoenebeck, Wed Dec 6 22:28:17 2006 UTC revision 1212 by schoenebeck, Tue May 29 23:59:36 2007 UTC
# Line 3  Line 3 
3   *   LinuxSampler - modular, streaming capable sampler                     *   *   LinuxSampler - modular, streaming capable sampler                     *
4   *                                                                         *   *                                                                         *
5   *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *   *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *
6   *   Copyright (C) 2005, 2006 Christian Schoenebeck                        *   *   Copyright (C) 2005 - 2007 Christian Schoenebeck                       *
7   *                                                                         *   *                                                                         *
8   *   This program is free software; you can redistribute it and/or modify  *   *   This program is free software; you can redistribute it and/or modify  *
9   *   it under the terms of the GNU General Public License as published by  *   *   it under the terms of the GNU General Public License as published by  *
# Line 43  namespace LinuxSampler { namespace gig { Line 43  namespace LinuxSampler { namespace gig {
43          }          }
44          InstrumentIdx  = -1;          InstrumentIdx  = -1;
45          InstrumentStat = -1;          InstrumentStat = -1;
46            pChannelLeft  = NULL;
47            pChannelRight = NULL;
48          AudioDeviceChannelLeft  = -1;          AudioDeviceChannelLeft  = -1;
49          AudioDeviceChannelRight = -1;          AudioDeviceChannelRight = -1;
50          pMidiInputPort = NULL;          pMidiInputPort = NULL;
# Line 59  namespace LinuxSampler { namespace gig { Line 61  namespace LinuxSampler { namespace gig {
61          if (pEventQueue) delete pEventQueue;          if (pEventQueue) delete pEventQueue;
62          if (pActiveKeys) delete pActiveKeys;          if (pActiveKeys) delete pActiveKeys;
63          if (pMIDIKeyInfo) delete[] pMIDIKeyInfo;          if (pMIDIKeyInfo) delete[] pMIDIKeyInfo;
64            RemoveAllFxSends();
65      }      }
66    
67      /**      /**
# Line 156  namespace LinuxSampler { namespace gig { Line 159  namespace LinuxSampler { namespace gig {
159       * This method will then actually start to load the instrument and block       * This method will then actually start to load the instrument and block
160       * the calling thread until loading was completed.       * the calling thread until loading was completed.
161       *       *
      * @returns detailed description of the method call result  
162       * @see PrepareLoadInstrument()       * @see PrepareLoadInstrument()
163       */       */
164      void EngineChannel::LoadInstrument() {      void EngineChannel::LoadInstrument() {
165            ::gig::Instrument* oldInstrument = pInstrument;
         if (pEngine) pEngine->DisableAndLock();  
   
         ResetInternal();  
166    
167          // free old instrument          // free old instrument
168          if (pInstrument) {          if (oldInstrument) {
169              // give old instrument back to instrument manager              if (pEngine) {
170              Engine::instruments.HandBack(pInstrument, this);                  // make sure we don't trigger any new notes with the
171                    // old instrument
172                    ::gig::DimensionRegion** dimRegionsInUse = pEngine->ChangeInstrument(this, 0);
173    
174                    // give old instrument back to instrument manager, but
175                    // keep the dimension regions and samples that are in
176                    // use
177                    Engine::instruments.HandBackInstrument(oldInstrument, this, dimRegionsInUse);
178                } else {
179                    Engine::instruments.HandBack(oldInstrument, this);
180                }
181          }          }
182    
183          // delete all key groups          // delete all key groups
184          ActiveKeyGroups.clear();          ActiveKeyGroups.clear();
185    
186          // request gig instrument from instrument manager          // request gig instrument from instrument manager
187            ::gig::Instrument* newInstrument;
188          try {          try {
189              InstrumentManager::instrument_id_t instrid;              InstrumentManager::instrument_id_t instrid;
190              instrid.FileName  = InstrumentFile;              instrid.FileName  = InstrumentFile;
191              instrid.Index     = InstrumentIdx;              instrid.Index     = InstrumentIdx;
192              pInstrument = Engine::instruments.Borrow(instrid, this);              newInstrument = Engine::instruments.Borrow(instrid, this);
193              if (!pInstrument) {              if (!newInstrument) {
194                  InstrumentStat = -1;                  throw InstrumentManagerException("resource was not created");
                 dmsg(1,("no instrument loaded!!!\n"));  
                 exit(EXIT_FAILURE);  
195              }              }
196          }          }
197          catch (RIFF::Exception e) {          catch (RIFF::Exception e) {
# Line 191  namespace LinuxSampler { namespace gig { Line 199  namespace LinuxSampler { namespace gig {
199              String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message;              String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message;
200              throw Exception(msg);              throw Exception(msg);
201          }          }
202          catch (InstrumentResourceManagerException e) {          catch (InstrumentManagerException e) {
203              InstrumentStat = -3;              InstrumentStat = -3;
204              String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message();              String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message();
205              throw Exception(msg);              throw Exception(msg);
# Line 202  namespace LinuxSampler { namespace gig { Line 210  namespace LinuxSampler { namespace gig {
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          if (pEngine) pEngine->ChangeInstrument(this, newInstrument);
220          try {          else pInstrument = newInstrument;
             if (pEngine && pEngine->pAudioOutputDevice)  
                 pEngine->pAudioOutputDevice->AcquireChannels(2); // gig Engine only stereo  
         }  
         catch (AudioOutputException e) {  
             String msg = "Audio output device unable to provide 2 audio channels, cause: " + e.Message();  
             throw Exception(msg);  
         }  
   
         if (pEngine) pEngine->Enable();  
221      }      }
222    
223      /**      /**
# Line 269  namespace LinuxSampler { namespace gig { Line 268  namespace LinuxSampler { namespace gig {
268          }          }
269          AudioDeviceChannelLeft  = 0;          AudioDeviceChannelLeft  = 0;
270          AudioDeviceChannelRight = 1;          AudioDeviceChannelRight = 1;
271          pOutputLeft             = pAudioOut->Channel(0)->Buffer();          if (fxSends.empty()) { // render directly into the AudioDevice's output buffers
272          pOutputRight            = pAudioOut->Channel(1)->Buffer();              pChannelLeft  = pAudioOut->Channel(AudioDeviceChannelLeft);
273                pChannelRight = pAudioOut->Channel(AudioDeviceChannelRight);
274            } else { // use local buffers for rendering and copy later
275                // ensure the local buffers have the correct size
276                if (pChannelLeft)  delete pChannelLeft;
277                if (pChannelRight) delete pChannelRight;
278                pChannelLeft  = new AudioChannel(0, pAudioOut->MaxSamplesPerCycle());
279                pChannelRight = new AudioChannel(1, pAudioOut->MaxSamplesPerCycle());
280            }
281            if (pEngine->EngineDisabled.GetUnsafe()) pEngine->Enable();
282          MidiInputPort::AddSysexListener(pEngine);          MidiInputPort::AddSysexListener(pEngine);
283      }      }
284    
# Line 297  namespace LinuxSampler { namespace gig { Line 305  namespace LinuxSampler { namespace gig {
305              Engine::FreeEngine(this, oldAudioDevice);              Engine::FreeEngine(this, oldAudioDevice);
306              AudioDeviceChannelLeft  = -1;              AudioDeviceChannelLeft  = -1;
307              AudioDeviceChannelRight = -1;              AudioDeviceChannelRight = -1;
308                if (!fxSends.empty()) { // free the local rendering buffers
309                    if (pChannelLeft)  delete pChannelLeft;
310                    if (pChannelRight) delete pChannelRight;
311                }
312                pChannelLeft  = NULL;
313                pChannelRight = NULL;
314          }          }
315      }      }
316    
317        AudioOutputDevice* EngineChannel::GetAudioOutputDevice() {
318            return (pEngine) ? pEngine->pAudioOutputDevice : NULL;
319        }
320    
321      void EngineChannel::SetOutputChannel(uint EngineAudioChannel, uint AudioDeviceChannel) {      void EngineChannel::SetOutputChannel(uint EngineAudioChannel, uint AudioDeviceChannel) {
322          if (!pEngine || !pEngine->pAudioOutputDevice) throw AudioOutputException("No audio output device connected yet.");          if (!pEngine || !pEngine->pAudioOutputDevice) throw AudioOutputException("No audio output device connected yet.");
323    
# Line 307  namespace LinuxSampler { namespace gig { Line 325  namespace LinuxSampler { namespace gig {
325          if (!pChannel) throw AudioOutputException("Invalid audio output device channel " + ToString(AudioDeviceChannel));          if (!pChannel) throw AudioOutputException("Invalid audio output device channel " + ToString(AudioDeviceChannel));
326          switch (EngineAudioChannel) {          switch (EngineAudioChannel) {
327              case 0: // left output channel              case 0: // left output channel
328                  pOutputLeft = pChannel->Buffer();                  if (fxSends.empty()) pChannelLeft = pChannel;
329                  AudioDeviceChannelLeft = AudioDeviceChannel;                  AudioDeviceChannelLeft = AudioDeviceChannel;
330                  break;                  break;
331              case 1: // right output channel              case 1: // right output channel
332                  pOutputRight = pChannel->Buffer();                  if (fxSends.empty()) pChannelRight = pChannel;
333                  AudioDeviceChannelRight = AudioDeviceChannel;                  AudioDeviceChannelRight = AudioDeviceChannel;
334                  break;                  break;
335              default:              default:
# Line 352  namespace LinuxSampler { namespace gig { Line 370  namespace LinuxSampler { namespace gig {
370          return midiChannel;          return midiChannel;
371      }      }
372    
373        FxSend* EngineChannel::AddFxSend(uint8_t MidiCtrl, String Name) throw (Exception) {
374            if (pEngine) pEngine->DisableAndLock();
375            FxSend* pFxSend = new FxSend(this, MidiCtrl, Name);
376            if (fxSends.empty()) {
377                if (pEngine && pEngine->pAudioOutputDevice) {
378                    AudioOutputDevice* pDevice = pEngine->pAudioOutputDevice;
379                    // create local render buffers
380                    pChannelLeft  = new AudioChannel(0, pDevice->MaxSamplesPerCycle());
381                    pChannelRight = new AudioChannel(1, pDevice->MaxSamplesPerCycle());
382                } else {
383                    // postpone local render buffer creation until audio device is assigned
384                    pChannelLeft  = NULL;
385                    pChannelRight = NULL;
386                }
387            }
388            fxSends.push_back(pFxSend);
389            if (pEngine) pEngine->Enable();
390            fireFxSendCountChanged(iSamplerChannelIndex, GetFxSendCount());
391            
392            return pFxSend;
393        }
394    
395        FxSend* EngineChannel::GetFxSend(uint FxSendIndex) {
396            return (FxSendIndex < fxSends.size()) ? fxSends[FxSendIndex] : NULL;
397        }
398    
399        uint EngineChannel::GetFxSendCount() {
400            return fxSends.size();
401        }
402    
403        void EngineChannel::RemoveFxSend(FxSend* pFxSend) {
404            if (pEngine) pEngine->DisableAndLock();
405            for (
406                std::vector<FxSend*>::iterator iter = fxSends.begin();
407                iter != fxSends.end(); iter++
408            ) {
409                if (*iter == pFxSend) {
410                    delete pFxSend;
411                    fxSends.erase(iter);
412                    if (fxSends.empty()) {
413                        // destroy local render buffers
414                        if (pChannelLeft)  delete pChannelLeft;
415                        if (pChannelRight) delete pChannelRight;
416                        // fallback to render directly into AudioOutputDevice's buffers
417                        if (pEngine && pEngine->pAudioOutputDevice) {
418                            pChannelLeft  = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelLeft);
419                            pChannelRight = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelRight);
420                        } else { // we update the pointers later
421                            pChannelLeft  = NULL;
422                            pChannelRight = NULL;
423                        }
424                    }
425                    break;
426                }
427            }
428            if (pEngine) pEngine->Enable();
429            fireFxSendCountChanged(iSamplerChannelIndex, GetFxSendCount());
430        }
431    
432      /**      /**
433       *  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
434       *  voice for the given key. This method is meant for real time rendering,       *  voice for the given key. This method is meant for real time rendering,
# Line 552  namespace LinuxSampler { namespace gig { Line 629  namespace LinuxSampler { namespace gig {
629          Pitch          = 0;          Pitch          = 0;
630          SustainPedal   = false;          SustainPedal   = false;
631          SostenutoPedal = false;          SostenutoPedal = false;
632          GlobalVolume   = CONFIG_GLOBAL_ATTENUATION;          GlobalVolume   = 1.0f;
633          MidiVolume     = 1.0;          MidiVolume     = 1.0;
634          GlobalPanLeft  = 1.0f;          GlobalPanLeft  = 1.0f;
635          GlobalPanRight = 1.0f;          GlobalPanRight = 1.0f;
636            GlobalTranspose = 0;
637          // set all MIDI controller values to zero          // set all MIDI controller values to zero
638          memset(ControllerTable, 0x00, 129);          memset(ControllerTable, 0x00, 129);
639            // reset all FX Send levels
640            for (
641                std::vector<FxSend*>::iterator iter = fxSends.begin();
642                iter != fxSends.end(); iter++
643            ) {
644                (*iter)->Reset();
645            }
646      }      }
647    
648      /**      /**
# Line 596  namespace LinuxSampler { namespace gig { Line 681  namespace LinuxSampler { namespace gig {
681          eventQueueReader.free(); // free all copied events from input queue          eventQueueReader.free(); // free all copied events from input queue
682      }      }
683    
684        void EngineChannel::RemoveAllFxSends() {
685            if (pEngine) pEngine->DisableAndLock();
686            if (!fxSends.empty()) { // free local render buffers
687                if (pChannelLeft) {
688                    delete pChannelLeft;
689                    if (pEngine && pEngine->pAudioOutputDevice) {
690                        // fallback to render directly to the AudioOutputDevice's buffer
691                        pChannelLeft = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelLeft);
692                    } else pChannelLeft = NULL;
693                }
694                if (pChannelRight) {
695                    delete pChannelRight;
696                    if (pEngine && pEngine->pAudioOutputDevice) {
697                        // fallback to render directly to the AudioOutputDevice's buffer
698                        pChannelRight = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelRight);
699                    } else pChannelRight = NULL;
700                }
701            }
702            for (int i = 0; i < fxSends.size(); i++) delete fxSends[i];
703            fxSends.clear();
704            if (pEngine) pEngine->Enable();
705        }
706    
707      float EngineChannel::Volume() {      float EngineChannel::Volume() {
708          return GlobalVolume;          return GlobalVolume;
709      }      }
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