/[svn]/linuxsampler/trunk/src/engines/gig/Engine.cpp
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revision 630 by persson, Sat Jun 11 14:51:49 2005 UTC revision 663 by schoenebeck, Sat Jun 18 21:37:03 2005 UTC
# Line 119  namespace LinuxSampler { namespace gig { Line 119  namespace LinuxSampler { namespace gig {
119          pMainFilterParameters   = NULL;          pMainFilterParameters   = NULL;
120    
121          ResetInternal();          ResetInternal();
122            ResetScaleTuning();
123      }      }
124    
125      /**      /**
# Line 171  namespace LinuxSampler { namespace gig { Line 172  namespace LinuxSampler { namespace gig {
172      void Engine::Reset() {      void Engine::Reset() {
173          DisableAndLock();          DisableAndLock();
174          ResetInternal();          ResetInternal();
175            ResetScaleTuning();
176          Enable();          Enable();
177      }      }
178    
# Line 184  namespace LinuxSampler { namespace gig { Line 186  namespace LinuxSampler { namespace gig {
186    
187          // reset voice stealing parameters          // reset voice stealing parameters
188          pVoiceStealingQueue->clear();          pVoiceStealingQueue->clear();
189          itLastStolenVoice  = RTList<Voice>::Iterator();          itLastStolenVoice          = RTList<Voice>::Iterator();
190          iuiLastStolenKey   = RTList<uint>::Iterator();          itLastStolenVoiceGlobally  = RTList<Voice>::Iterator();
191          pLastStolenChannel = NULL;          iuiLastStolenKey           = RTList<uint>::Iterator();
192            iuiLastStolenKeyGlobally   = RTList<uint>::Iterator();
193          // reset to normal chromatic scale (means equal temper)          pLastStolenChannel         = NULL;
         memset(&ScaleTuning[0], 0x00, 12);  
194    
195          // reset all voices          // reset all voices
196          for (RTList<Voice>::Iterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {          for (RTList<Voice>::Iterator iterVoice = pVoicePool->allocAppend(); iterVoice == pVoicePool->last(); iterVoice = pVoicePool->allocAppend()) {
# Line 205  namespace LinuxSampler { namespace gig { Line 206  namespace LinuxSampler { namespace gig {
206      }      }
207    
208      /**      /**
209         * Reset to normal, chromatic scale (means equal tempered).
210         */
211        void Engine::ResetScaleTuning() {
212            memset(&ScaleTuning[0], 0x00, 12);
213        }
214    
215        /**
216       * Connect this engine instance with the given audio output device.       * Connect this engine instance with the given audio output device.
217       * This method will be called when an Engine instance is created.       * This method will be called when an Engine instance is created.
218       * All of the engine's data structures which are dependant to the used       * All of the engine's data structures which are dependant to the used
# Line 352  namespace LinuxSampler { namespace gig { Line 360  namespace LinuxSampler { namespace gig {
360          // update time of start and end of this audio fragment (as events' time stamps relate to this)          // update time of start and end of this audio fragment (as events' time stamps relate to this)
361          pEventGenerator->UpdateFragmentTime(Samples);          pEventGenerator->UpdateFragmentTime(Samples);
362    
363            // We only allow a maximum of CONFIG_MAX_VOICES voices to be spawned
364            // in each audio fragment. All subsequent request for spawning new
365            // voices in the same audio fragment will be ignored.
366            VoiceSpawnsLeft = CONFIG_MAX_VOICES;
367    
368          // get all events from the engine's global input event queue which belong to the current fragment          // get all events from the engine's global input event queue which belong to the current fragment
369          // (these are usually just SysEx messages)          // (these are usually just SysEx messages)
370          ImportEvents(Samples);          ImportEvents(Samples);
# Line 370  namespace LinuxSampler { namespace gig { Line 383  namespace LinuxSampler { namespace gig {
383              }              }
384          }          }
385    
         // We only allow a maximum of CONFIG_MAX_VOICES voices to be stolen  
         // in each audio fragment. All subsequent request for spawning new  
         // voices in the same audio fragment will be ignored.  
         VoiceTheftsLeft = CONFIG_MAX_VOICES;  
   
386          // reset internal voice counter (just for statistic of active voices)          // reset internal voice counter (just for statistic of active voices)
387          ActiveVoiceCountTemp = 0;          ActiveVoiceCountTemp = 0;
388    
   
389          // handle events on all engine channels          // handle events on all engine channels
390          for (int i = 0; i < engineChannels.size(); i++) {          for (int i = 0; i < engineChannels.size(); i++) {
391              if (!engineChannels[i]->pInstrument) continue; // ignore if no instrument loaded              if (!engineChannels[i]->pInstrument) continue; // ignore if no instrument loaded
# Line 406  namespace LinuxSampler { namespace gig { Line 413  namespace LinuxSampler { namespace gig {
413    
414          // reset voice stealing for the next audio fragment          // reset voice stealing for the next audio fragment
415          pVoiceStealingQueue->clear();          pVoiceStealingQueue->clear();
         itLastStolenVoice  = RTList<Voice>::Iterator();  
         iuiLastStolenKey   = RTList<uint>::Iterator();  
         pLastStolenChannel = NULL;  
416    
417          // just some statistics about this engine instance          // just some statistics about this engine instance
418          ActiveVoiceCount = ActiveVoiceCountTemp;          ActiveVoiceCount = ActiveVoiceCountTemp;
# Line 458  namespace LinuxSampler { namespace gig { Line 462  namespace LinuxSampler { namespace gig {
462                  }                  }
463              }              }
464          }          }
465    
466            // reset voice stealing for the next engine channel (or next audio fragment)
467            itLastStolenVoice         = RTList<Voice>::Iterator();
468            itLastStolenVoiceGlobally = RTList<Voice>::Iterator();
469            iuiLastStolenKey          = RTList<uint>::Iterator();
470            iuiLastStolenKeyGlobally  = RTList<uint>::Iterator();
471            pLastStolenChannel        = NULL;
472      }      }
473    
474      /**      /**
# Line 733  namespace LinuxSampler { namespace gig { Line 744  namespace LinuxSampler { namespace gig {
744                  pKey->pActiveVoices->free(itNewVoice);                  pKey->pActiveVoices->free(itNewVoice);
745              }              }
746              else { // on success              else { // on success
747                    --VoiceSpawnsLeft;
748                  uint** ppKeyGroup = NULL;                  uint** ppKeyGroup = NULL;
749                  if (itNewVoice->KeyGroup) { // if this voice / key belongs to a key group                  if (itNewVoice->KeyGroup) { // if this voice / key belongs to a key group
750                      ppKeyGroup = &pEngineChannel->ActiveKeyGroups[itNewVoice->KeyGroup];                      ppKeyGroup = &pEngineChannel->ActiveKeyGroups[itNewVoice->KeyGroup];
# Line 742  namespace LinuxSampler { namespace gig { Line 754  namespace LinuxSampler { namespace gig {
754                          RTList<Voice>::Iterator itVoiceToBeKilled = pOtherKey->pActiveVoices->first();                          RTList<Voice>::Iterator itVoiceToBeKilled = pOtherKey->pActiveVoices->first();
755                          RTList<Voice>::Iterator end               = pOtherKey->pActiveVoices->end();                          RTList<Voice>::Iterator end               = pOtherKey->pActiveVoices->end();
756                          for (; itVoiceToBeKilled != end; ++itVoiceToBeKilled) {                          for (; itVoiceToBeKilled != end; ++itVoiceToBeKilled) {
757                              if (itVoiceToBeKilled->Type != Voice::type_release_trigger) itVoiceToBeKilled->Kill(itNoteOnEvent);                              if (itVoiceToBeKilled->Type != Voice::type_release_trigger) {
758                                    itVoiceToBeKilled->Kill(itNoteOnEvent);
759                                    --VoiceSpawnsLeft; //FIXME: just a hack, we should better check in StealVoice() if the voice was killed due to key conflict
760                                }
761                          }                          }
762                      }                      }
763                  }                  }
# Line 788  namespace LinuxSampler { namespace gig { Line 803  namespace LinuxSampler { namespace gig {
803       *  @returns 0 on success, a value < 0 if no active voice could be picked for voice stealing       *  @returns 0 on success, a value < 0 if no active voice could be picked for voice stealing
804       */       */
805      int Engine::StealVoice(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent) {      int Engine::StealVoice(EngineChannel* pEngineChannel, Pool<Event>::Iterator& itNoteOnEvent) {
806          if (!VoiceTheftsLeft) {          if (VoiceSpawnsLeft <= 0) {
807              dmsg(1,("Max. voice thefts per audio fragment reached (you may raise CONFIG_MAX_VOICES).\n"));              dmsg(1,("Max. voice thefts per audio fragment reached (you may raise CONFIG_MAX_VOICES).\n"));
808              return -1;              return -1;
809          }          }
# Line 807  namespace LinuxSampler { namespace gig { Line 822  namespace LinuxSampler { namespace gig {
822                      midi_key_info_t* pSelectedKey = &pEngineChannel->pMIDIKeyInfo[itNoteOnEvent->Param.Note.Key];                      midi_key_info_t* pSelectedKey = &pEngineChannel->pMIDIKeyInfo[itNoteOnEvent->Param.Note.Key];
823                      itSelectedVoice = pSelectedKey->pActiveVoices->first();                      itSelectedVoice = pSelectedKey->pActiveVoices->first();
824                      // proceed iterating if voice was created in this fragment cycle                      // proceed iterating if voice was created in this fragment cycle
825                      while (itSelectedVoice && !itSelectedVoice->hasRendered()) ++itSelectedVoice;                      while (itSelectedVoice && !itSelectedVoice->IsStealable()) ++itSelectedVoice;
826                      // if we haven't found a voice then proceed with algorithm 'oldestkey'                      // if we haven't found a voice then proceed with algorithm 'oldestkey'
827                      if (itSelectedVoice && itSelectedVoice->hasRendered()) break;                      if (itSelectedVoice && itSelectedVoice->IsStealable()) break;
828                  } // no break - intentional !                  } // no break - intentional !
829    
830                  // try to pick the oldest voice on the oldest active key                  // try to pick the oldest voice on the oldest active key
831                  // from the same engine channel                  // from the same engine channel
832                  // (caution: must stay after 'oldestvoiceonkey' algorithm !)                  // (caution: must stay after 'oldestvoiceonkey' algorithm !)
833                  case voice_steal_algo_oldestkey: {                  case voice_steal_algo_oldestkey: {
834                        // if we already stole in this fragment, try to proceed on same key
835                      if (this->itLastStolenVoice) {                      if (this->itLastStolenVoice) {
836                          itSelectedVoice = this->itLastStolenVoice;                          itSelectedVoice = this->itLastStolenVoice;
837                          ++itSelectedVoice;                          do {
838                          if (itSelectedVoice) break; // selection succeeded                              ++itSelectedVoice;
839                          RTList<uint>::Iterator iuiSelectedKey = this->iuiLastStolenKey;                          } while (itSelectedVoice && !itSelectedVoice->IsStealable()); // proceed iterating if voice was created in this fragment cycle
840                          ++iuiSelectedKey;                          // found a "stealable" voice ?
841                          if (iuiSelectedKey) {                          if (itSelectedVoice && itSelectedVoice->IsStealable()) {
842                              this->iuiLastStolenKey = iuiSelectedKey;                              // remember which voice we stole, so we can simply proceed on next voice stealing
843                              midi_key_info_t* pSelectedKey = &pEngineChannel->pMIDIKeyInfo[*iuiSelectedKey];                              this->itLastStolenVoice = itSelectedVoice;
844                              itSelectedVoice = pSelectedKey->pActiveVoices->first();                              break; // selection succeeded
845                            }
846                        }
847                        // get (next) oldest key
848                        RTList<uint>::Iterator iuiSelectedKey = (this->iuiLastStolenKey) ? ++this->iuiLastStolenKey : pEngineChannel->pActiveKeys->first();
849                        while (iuiSelectedKey) {
850                            midi_key_info_t* pSelectedKey = &pEngineChannel->pMIDIKeyInfo[*iuiSelectedKey];
851                            itSelectedVoice = pSelectedKey->pActiveVoices->first();
852                            // proceed iterating if voice was created in this fragment cycle
853                            while (itSelectedVoice && !itSelectedVoice->IsStealable()) ++itSelectedVoice;
854                            // found a "stealable" voice ?
855                            if (itSelectedVoice && itSelectedVoice->IsStealable()) {
856                                // remember which voice on which key we stole, so we can simply proceed on next voice stealing
857                                this->iuiLastStolenKey  = iuiSelectedKey;
858                                this->itLastStolenVoice = itSelectedVoice;
859                              break; // selection succeeded                              break; // selection succeeded
860                          }                          }
861                            ++iuiSelectedKey; // get next oldest key
862                      }                      }
863                      break;                      break;
864                  }                  }
# Line 842  namespace LinuxSampler { namespace gig { Line 873  namespace LinuxSampler { namespace gig {
873    
874              // if we couldn't steal a voice from the same engine channel then              // if we couldn't steal a voice from the same engine channel then
875              // steal oldest voice on the oldest key from any other engine channel              // steal oldest voice on the oldest key from any other engine channel
876              if (!itSelectedVoice) {              // (the smaller engine channel number, the higher priority)
877                  EngineChannel* pSelectedChannel = (pLastStolenChannel) ? pLastStolenChannel : pEngineChannel;              if (!itSelectedVoice || !itSelectedVoice->IsStealable()) {
878                  int iChannelIndex = pSelectedChannel->iEngineIndexSelf;                  EngineChannel* pSelectedChannel;
879                  while (true) {                  int            iChannelIndex;
880                      RTList<uint>::Iterator iuiSelectedKey = pSelectedChannel->pActiveKeys->first();                  // select engine channel
881                      if (iuiSelectedKey) {                  if (pLastStolenChannel) {
882                        pSelectedChannel = pLastStolenChannel;
883                        iChannelIndex    = pSelectedChannel->iEngineIndexSelf;
884                    } else { // pick the engine channel followed by this engine channel
885                        iChannelIndex    = (pEngineChannel->iEngineIndexSelf + 1) % engineChannels.size();
886                        pSelectedChannel = engineChannels[iChannelIndex];
887                    }
888    
889                    // if we already stole in this fragment, try to proceed on same key
890                    if (this->itLastStolenVoiceGlobally) {
891                        itSelectedVoice = this->itLastStolenVoiceGlobally;
892                        do {
893                            ++itSelectedVoice;
894                        } while (itSelectedVoice && !itSelectedVoice->IsStealable()); // proceed iterating if voice was created in this fragment cycle
895                    }
896    
897                    #if CONFIG_DEVMODE
898                    EngineChannel* pBegin = pSelectedChannel; // to detect endless loop
899                    #endif // CONFIG_DEVMODE
900    
901                    // did we find a 'stealable' voice?
902                    if (itSelectedVoice && itSelectedVoice->IsStealable()) {
903                        // remember which voice we stole, so we can simply proceed on next voice stealing
904                        this->itLastStolenVoiceGlobally = itSelectedVoice;
905                    } else while (true) { // iterate through engine channels
906                        // get (next) oldest key
907                        RTList<uint>::Iterator iuiSelectedKey = (this->iuiLastStolenKeyGlobally) ? ++this->iuiLastStolenKeyGlobally : pSelectedChannel->pActiveKeys->first();
908                        this->iuiLastStolenKeyGlobally = RTList<uint>::Iterator(); // to prevent endless loop (see line above)
909                        while (iuiSelectedKey) {
910                          midi_key_info_t* pSelectedKey = &pSelectedChannel->pMIDIKeyInfo[*iuiSelectedKey];                          midi_key_info_t* pSelectedKey = &pSelectedChannel->pMIDIKeyInfo[*iuiSelectedKey];
911                          itSelectedVoice    = pSelectedKey->pActiveVoices->first();                          itSelectedVoice = pSelectedKey->pActiveVoices->first();
912                          iuiLastStolenKey   = iuiSelectedKey;                          // proceed iterating if voice was created in this fragment cycle
913                          pLastStolenChannel = pSelectedChannel;                          while (itSelectedVoice && !itSelectedVoice->IsStealable()) ++itSelectedVoice;
914                          break; // selection succeeded                          // found a "stealable" voice ?
915                            if (itSelectedVoice && itSelectedVoice->IsStealable()) {
916                                // remember which voice on which key on which engine channel we stole, so we can simply proceed on next voice stealing
917                                this->iuiLastStolenKeyGlobally  = iuiSelectedKey;
918                                this->itLastStolenVoiceGlobally = itSelectedVoice;
919                                this->pLastStolenChannel        = pSelectedChannel;
920                                break; // selection succeeded
921                            }
922                            ++iuiSelectedKey; // get next key on current engine channel
923                      }                      }
924                        // get next engine channel
925                      iChannelIndex    = (iChannelIndex + 1) % engineChannels.size();                      iChannelIndex    = (iChannelIndex + 1) % engineChannels.size();
926                      pSelectedChannel =  engineChannels[iChannelIndex];                      pSelectedChannel = engineChannels[iChannelIndex];
927    
928                        #if CONFIG_DEVMODE
929                        if (pSelectedChannel == pBegin) {
930                            dmsg(1,("FATAL ERROR: voice stealing endless loop!\n"));
931                            dmsg(1,("VoiceSpawnsLeft=%d.\n", VoiceSpawnsLeft));
932                            dmsg(1,("Exiting.\n"));
933                            exit(-1);
934                        }
935                        #endif // CONFIG_DEVMODE
936                  }                  }
937              }              }
938    
# Line 869  namespace LinuxSampler { namespace gig { Line 946  namespace LinuxSampler { namespace gig {
946              // now kill the selected voice              // now kill the selected voice
947              itSelectedVoice->Kill(itNoteOnEvent);              itSelectedVoice->Kill(itNoteOnEvent);
948    
949              // remember which voice we stole, so we can simply proceed for the next voice stealing              --VoiceSpawnsLeft;
             itLastStolenVoice = itSelectedVoice;  
   
             --VoiceTheftsLeft;  
950    
951              return 0; // success              return 0; // success
952          }          }
# Line 948  namespace LinuxSampler { namespace gig { Line 1022  namespace LinuxSampler { namespace gig {
1022              case 7: { // volume              case 7: { // volume
1023                  //TODO: not sample accurate yet                  //TODO: not sample accurate yet
1024                  pEngineChannel->GlobalVolume = (float) itControlChangeEventOnCCList->Param.CC.Value / 127.0f;                  pEngineChannel->GlobalVolume = (float) itControlChangeEventOnCCList->Param.CC.Value / 127.0f;
1025                    pEngineChannel->bStatusChanged = true; // engine channel status has changed, so set notify flag
1026                  break;                  break;
1027              }              }
1028              case 10: { // panpot              case 10: { // panpot
# Line 1147  namespace LinuxSampler { namespace gig { Line 1222  namespace LinuxSampler { namespace gig {
1222              RTList<Voice>::Iterator itVoicesEnd = pKey->pActiveVoices->end();              RTList<Voice>::Iterator itVoicesEnd = pKey->pActiveVoices->end();
1223              for (; itVoice != itVoicesEnd; ++itVoice) { // iterate through all voices on this key              for (; itVoice != itVoicesEnd; ++itVoice) { // iterate through all voices on this key
1224                  itVoice->Kill(itKillEvent);                  itVoice->Kill(itKillEvent);
1225                    --VoiceSpawnsLeft; //FIXME: just a temporary workaround, we should check the cause in StealVoice() instead
1226              }              }
1227          }          }
1228      }      }
# Line 1203  namespace LinuxSampler { namespace gig { Line 1279  namespace LinuxSampler { namespace gig {
1279      }      }
1280    
1281      String Engine::Version() {      String Engine::Version() {
1282          String s = "$Revision: 1.40 $";          String s = "$Revision: 1.44 $";
1283          return s.substr(11, s.size() - 13); // cut dollar signs, spaces and CVS macro keyword          return s.substr(11, s.size() - 13); // cut dollar signs, spaces and CVS macro keyword
1284      }      }
1285    
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