/[svn]/linuxsampler/trunk/src/engines/gig/Engine.cpp
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revision 660 by schoenebeck, Fri Jun 17 19:49:30 2005 UTC revision 663 by schoenebeck, Sat Jun 18 21:37:03 2005 UTC
# Line 360  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 378  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 745  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 754  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 800  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 819  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
# Line 833  namespace LinuxSampler { namespace gig { Line 836  namespace LinuxSampler { namespace gig {
836                          itSelectedVoice = this->itLastStolenVoice;                          itSelectedVoice = this->itLastStolenVoice;
837                          do {                          do {
838                              ++itSelectedVoice;                              ++itSelectedVoice;
839                          } while (itSelectedVoice && !itSelectedVoice->hasRendered()); // proceed iterating if voice was created in this fragment cycle                          } while (itSelectedVoice && !itSelectedVoice->IsStealable()); // proceed iterating if voice was created in this fragment cycle
840                          // found a "stealable" voice ?                          // found a "stealable" voice ?
841                          if (itSelectedVoice && itSelectedVoice->hasRendered()) {                          if (itSelectedVoice && itSelectedVoice->IsStealable()) {
842                              // remember which voice we stole, so we can simply proceed on next voice stealing                              // remember which voice we stole, so we can simply proceed on next voice stealing
843                              this->itLastStolenVoice = itSelectedVoice;                              this->itLastStolenVoice = itSelectedVoice;
844                              break; // selection succeeded                              break; // selection succeeded
# Line 847  namespace LinuxSampler { namespace gig { Line 850  namespace LinuxSampler { namespace gig {
850                          midi_key_info_t* pSelectedKey = &pEngineChannel->pMIDIKeyInfo[*iuiSelectedKey];                          midi_key_info_t* pSelectedKey = &pEngineChannel->pMIDIKeyInfo[*iuiSelectedKey];
851                          itSelectedVoice = pSelectedKey->pActiveVoices->first();                          itSelectedVoice = pSelectedKey->pActiveVoices->first();
852                          // proceed iterating if voice was created in this fragment cycle                          // proceed iterating if voice was created in this fragment cycle
853                          while (itSelectedVoice && !itSelectedVoice->hasRendered()) ++itSelectedVoice;                          while (itSelectedVoice && !itSelectedVoice->IsStealable()) ++itSelectedVoice;
854                          // found a "stealable" voice ?                          // found a "stealable" voice ?
855                          if (itSelectedVoice && itSelectedVoice->hasRendered()) {                          if (itSelectedVoice && itSelectedVoice->IsStealable()) {
856                              // remember which voice on which key we stole, so we can simply proceed on next voice stealing                              // remember which voice on which key we stole, so we can simply proceed on next voice stealing
857                              this->iuiLastStolenKey  = iuiSelectedKey;                              this->iuiLastStolenKey  = iuiSelectedKey;
858                              this->itLastStolenVoice = itSelectedVoice;                              this->itLastStolenVoice = itSelectedVoice;
# Line 871  namespace LinuxSampler { namespace gig { Line 874  namespace LinuxSampler { namespace gig {
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              // (the smaller engine channel number, the higher priority)              // (the smaller engine channel number, the higher priority)
877              if (!itSelectedVoice || !itSelectedVoice->hasRendered()) {              if (!itSelectedVoice || !itSelectedVoice->IsStealable()) {
878                  EngineChannel* pSelectedChannel;                  EngineChannel* pSelectedChannel;
879                  int            iChannelIndex;                  int            iChannelIndex;
880                  // select engine channel                  // select engine channel
# Line 882  namespace LinuxSampler { namespace gig { Line 885  namespace LinuxSampler { namespace gig {
885                      iChannelIndex    = (pEngineChannel->iEngineIndexSelf + 1) % engineChannels.size();                      iChannelIndex    = (pEngineChannel->iEngineIndexSelf + 1) % engineChannels.size();
886                      pSelectedChannel = engineChannels[iChannelIndex];                      pSelectedChannel = engineChannels[iChannelIndex];
887                  }                  }
888                  // iterate through engine channels  
889                  while (true) {                  // if we already stole in this fragment, try to proceed on same key
890                      // if we already stole in this fragment, try to proceed on same key                  if (this->itLastStolenVoiceGlobally) {
891                      if (this->itLastStolenVoiceGlobally) {                      itSelectedVoice = this->itLastStolenVoiceGlobally;
892                          itSelectedVoice = this->itLastStolenVoiceGlobally;                      do {
893                          do {                          ++itSelectedVoice;
894                              ++itSelectedVoice;                      } while (itSelectedVoice && !itSelectedVoice->IsStealable()); // proceed iterating if voice was created in this fragment cycle
895                          } while (itSelectedVoice && !itSelectedVoice->hasRendered()); // proceed iterating if voice was created in this fragment cycle                  }
896                          // break if selection succeeded  
897                          if (itSelectedVoice && itSelectedVoice->hasRendered()) {                  #if CONFIG_DEVMODE
898                              // remember which voice we stole, so we can simply proceed on next voice stealing                  EngineChannel* pBegin = pSelectedChannel; // to detect endless loop
899                              this->itLastStolenVoiceGlobally = itSelectedVoice;                  #endif // CONFIG_DEVMODE
900                              break; // selection succeeded  
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                      // get (next) oldest key
907                      RTList<uint>::Iterator iuiSelectedKey = (this->iuiLastStolenKey) ? ++this->iuiLastStolenKey : pSelectedChannel->pActiveKeys->first();                      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) {                      while (iuiSelectedKey) {
910                          midi_key_info_t* pSelectedKey = &pEngineChannel->pMIDIKeyInfo[*iuiSelectedKey];                          midi_key_info_t* pSelectedKey = &pSelectedChannel->pMIDIKeyInfo[*iuiSelectedKey];
911                          itSelectedVoice = pSelectedKey->pActiveVoices->first();                          itSelectedVoice = pSelectedKey->pActiveVoices->first();
912                          // proceed iterating if voice was created in this fragment cycle                          // proceed iterating if voice was created in this fragment cycle
913                          while (itSelectedVoice && !itSelectedVoice->hasRendered()) ++itSelectedVoice;                          while (itSelectedVoice && !itSelectedVoice->IsStealable()) ++itSelectedVoice;
914                          // found a "stealable" voice ?                          // found a "stealable" voice ?
915                          if (itSelectedVoice && itSelectedVoice->hasRendered()) {                          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                              // 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;                              this->iuiLastStolenKeyGlobally  = iuiSelectedKey;
918                              this->itLastStolenVoiceGlobally = itSelectedVoice;                              this->itLastStolenVoiceGlobally = itSelectedVoice;
# Line 917  namespace LinuxSampler { namespace gig { Line 924  namespace LinuxSampler { namespace gig {
924                      // get next engine channel                      // 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 930  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              --VoiceTheftsLeft;              --VoiceSpawnsLeft;
950    
951              return 0; // success              return 0; // success
952          }          }
# Line 1206  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 1262  namespace LinuxSampler { namespace gig { Line 1279  namespace LinuxSampler { namespace gig {
1279      }      }
1280    
1281      String Engine::Version() {      String Engine::Version() {
1282          String s = "$Revision: 1.43 $";          String s = "$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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