/[svn]/linuxsampler/trunk/src/network/lscpserver.cpp
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Diff of /linuxsampler/trunk/src/network/lscpserver.cpp

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revision 475 by schoenebeck, Thu Mar 17 23:56:56 2005 UTC revision 814 by wylder, Thu Dec 22 19:26:35 2005 UTC
# Line 33  Line 33 
33  #endif  #endif
34    
35  #include "../engines/EngineFactory.h"  #include "../engines/EngineFactory.h"
36    #include "../engines/EngineChannelFactory.h"
37  #include "../drivers/audio/AudioOutputDeviceFactory.h"  #include "../drivers/audio/AudioOutputDeviceFactory.h"
38  #include "../drivers/midi/MidiInputDeviceFactory.h"  #include "../drivers/midi/MidiInputDeviceFactory.h"
39    
# Line 60  Mutex LSCPServer::NotifyBufferMutex = Mu Line 61  Mutex LSCPServer::NotifyBufferMutex = Mu
61  Mutex LSCPServer::SubscriptionMutex = Mutex();  Mutex LSCPServer::SubscriptionMutex = Mutex();
62  Mutex LSCPServer::RTNotifyMutex = Mutex();  Mutex LSCPServer::RTNotifyMutex = Mutex();
63    
64  LSCPServer::LSCPServer(Sampler* pSampler) : Thread(true, false, 0, -4) {  LSCPServer::LSCPServer(Sampler* pSampler, long int addr, short int port) : Thread(true, false, 0, -4) {
65        SocketAddress.sin_family      = AF_INET;
66        SocketAddress.sin_addr.s_addr = addr;
67        SocketAddress.sin_port        = port;
68      this->pSampler = pSampler;      this->pSampler = pSampler;
69      LSCPEvent::RegisterEvent(LSCPEvent::event_channels, "CHANNELS");      LSCPEvent::RegisterEvent(LSCPEvent::event_channel_count, "CHANNEL_COUNT");
70      LSCPEvent::RegisterEvent(LSCPEvent::event_voice_count, "VOICE_COUNT");      LSCPEvent::RegisterEvent(LSCPEvent::event_voice_count, "VOICE_COUNT");
71      LSCPEvent::RegisterEvent(LSCPEvent::event_stream_count, "STREAM_COUNT");      LSCPEvent::RegisterEvent(LSCPEvent::event_stream_count, "STREAM_COUNT");
72      LSCPEvent::RegisterEvent(LSCPEvent::event_buffer_fill, "BUFFER_FILL");      LSCPEvent::RegisterEvent(LSCPEvent::event_buffer_fill, "BUFFER_FILL");
73      LSCPEvent::RegisterEvent(LSCPEvent::event_info, "INFO");      LSCPEvent::RegisterEvent(LSCPEvent::event_channel_info, "CHANNEL_INFO");
74      LSCPEvent::RegisterEvent(LSCPEvent::event_misc, "MISCELLANEOUS");      LSCPEvent::RegisterEvent(LSCPEvent::event_misc, "MISCELLANEOUS");
75        LSCPEvent::RegisterEvent(LSCPEvent::event_total_voice_count, "TOTAL_VOICE_COUNT");
76      hSocket = -1;      hSocket = -1;
77  }  }
78    
# Line 97  int LSCPServer::Main() { Line 102  int LSCPServer::Main() {
102          exit(EXIT_FAILURE);          exit(EXIT_FAILURE);
103      }      }
104    
     SocketAddress.sin_family      = AF_INET;  
     SocketAddress.sin_port        = htons(LSCP_PORT);  
     SocketAddress.sin_addr.s_addr = htonl(INADDR_ANY);  
   
105      if (bind(hSocket, (sockaddr*) &SocketAddress, sizeof(sockaddr_in)) < 0) {      if (bind(hSocket, (sockaddr*) &SocketAddress, sizeof(sockaddr_in)) < 0) {
106          std::cerr << "LSCPServer: Could not bind server socket, retrying for " << ToString(LSCP_SERVER_BIND_TIMEOUT) << " seconds...";          std::cerr << "LSCPServer: Could not bind server socket, retrying for " << ToString(LSCP_SERVER_BIND_TIMEOUT) << " seconds...";
107          for (int trial = 0; true; trial++) { // retry for LSCP_SERVER_BIND_TIMEOUT seconds          for (int trial = 0; true; trial++) { // retry for LSCP_SERVER_BIND_TIMEOUT seconds
# Line 127  int LSCPServer::Main() { Line 128  int LSCPServer::Main() {
128      FD_SET(hSocket, &fdSet);      FD_SET(hSocket, &fdSet);
129      int maxSessions = hSocket;      int maxSessions = hSocket;
130    
131        timeval timeout;
132    
133      while (true) {      while (true) {
134          fd_set selectSet = fdSet;          // check if some engine channel's parameter / status changed, if so notify the respective LSCP event subscribers
135          int retval = select(maxSessions+1, &selectSet, NULL, NULL, NULL);          {
136                std::set<EngineChannel*> engineChannels = EngineChannelFactory::EngineChannelInstances();
137                std::set<EngineChannel*>::iterator itEngineChannel = engineChannels.begin();
138                std::set<EngineChannel*>::iterator itEnd           = engineChannels.end();
139                for (; itEngineChannel != itEnd; ++itEngineChannel) {
140                    if ((*itEngineChannel)->StatusChanged()) {
141                        SendLSCPNotify(LSCPEvent(LSCPEvent::event_channel_info, (*itEngineChannel)->iSamplerChannelIndex));
142                    }
143                }
144            }
145    
146            //Now let's deliver late notifies (if any)
147            NotifyBufferMutex.Lock();
148            for (std::map<int,String>::iterator iterNotify = bufferedNotifies.begin(); iterNotify != bufferedNotifies.end(); iterNotify++) {
149    #ifdef MSG_NOSIGNAL
150                    send(iterNotify->first, iterNotify->second.c_str(), iterNotify->second.size(), MSG_NOSIGNAL);
151    #else
152                    send(iterNotify->first, iterNotify->second.c_str(), iterNotify->second.size(), 0);
153    #endif
154                    bufferedNotifies.erase(iterNotify);
155            }
156            NotifyBufferMutex.Unlock();
157    
158            fd_set selectSet = fdSet;
159            timeout.tv_sec  = 0;
160            timeout.tv_usec = 100000;
161    
162            int retval = select(maxSessions+1, &selectSet, NULL, NULL, &timeout);
163    
164          if (retval == 0)          if (retval == 0)
165                  continue; //Nothing try again                  continue; //Nothing try again
166          if (retval == -1) {          if (retval == -1) {
# Line 189  int LSCPServer::Main() { Line 220  int LSCPServer::Main() {
220                          break;                          break;
221                  }                  }
222          }          }
   
         //Now let's deliver late notifies (if any)  
         NotifyBufferMutex.Lock();  
         for (std::map<int,String>::iterator iterNotify = bufferedNotifies.begin(); iterNotify != bufferedNotifies.end(); iterNotify++) {  
                 send(iterNotify->first, iterNotify->second.c_str(), iterNotify->second.size(), 0);  
                 bufferedNotifies.erase(iterNotify);  
         }  
         NotifyBufferMutex.Unlock();  
223      }      }
224  }  }
225    
# Line 243  void LSCPServer::SendLSCPNotify( LSCPEve Line 266  void LSCPServer::SendLSCPNotify( LSCPEve
266          while (true) {          while (true) {
267                  if (NotifyMutex.Trylock()) {                  if (NotifyMutex.Trylock()) {
268                          for(;iter != end; iter++)                          for(;iter != end; iter++)
269    #ifdef MSG_NOSIGNAL
270                                    send(*iter, notify.c_str(), notify.size(), MSG_NOSIGNAL);
271    #else
272                                  send(*iter, notify.c_str(), notify.size(), 0);                                  send(*iter, notify.c_str(), notify.size(), 0);
273    #endif
274                          NotifyMutex.Unlock();                          NotifyMutex.Unlock();
275                          break;                          break;
276                  } else {                  } else {
# Line 352  void LSCPServer::AnswerClient(String Ret Line 379  void LSCPServer::AnswerClient(String Ret
379      dmsg(2,("LSCPServer::AnswerClient(ReturnMessage=%s)", ReturnMessage.c_str()));      dmsg(2,("LSCPServer::AnswerClient(ReturnMessage=%s)", ReturnMessage.c_str()));
380      if (currentSocket != -1) {      if (currentSocket != -1) {
381              NotifyMutex.Lock();              NotifyMutex.Lock();
382    #ifdef MSG_NOSIGNAL
383                send(currentSocket, ReturnMessage.c_str(), ReturnMessage.size(), MSG_NOSIGNAL);
384    #else
385              send(currentSocket, ReturnMessage.c_str(), ReturnMessage.size(), 0);              send(currentSocket, ReturnMessage.c_str(), ReturnMessage.size(), 0);
386    #endif
387              NotifyMutex.Unlock();              NotifyMutex.Unlock();
388      }      }
389  }  }
# Line 485  String LSCPServer::LoadInstrument(String Line 516  String LSCPServer::LoadInstrument(String
516   * sampler channel.   * sampler channel.
517   */   */
518  String LSCPServer::SetEngineType(String EngineName, uint uiSamplerChannel) {  String LSCPServer::SetEngineType(String EngineName, uint uiSamplerChannel) {
519      dmsg(2,("LSCPServer: LoadEngine(EngineName=%s,SamplerChannel=%d)\n", EngineName.c_str(), uiSamplerChannel));      dmsg(2,("LSCPServer: SetEngineType(EngineName=%s,uiSamplerChannel=%d)\n", EngineName.c_str(), uiSamplerChannel));
520      LSCPResultSet result;      LSCPResultSet result;
521      try {      try {
522          SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);          SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
523          if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));          if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
524          LockRTNotify();          LockRTNotify();
525          pSamplerChannel->SetEngineType(EngineName);          pSamplerChannel->SetEngineType(EngineName);
526            if(HasSoloChannel()) pSamplerChannel->GetEngineChannel()->SetMute(-1);
527          UnlockRTNotify();          UnlockRTNotify();
528      }      }
529      catch (LinuxSamplerException e) {      catch (LinuxSamplerException e) {
# Line 550  String LSCPServer::RemoveChannel(uint ui Line 582  String LSCPServer::RemoveChannel(uint ui
582  }  }
583    
584  /**  /**
585   * Will be called by the parser to get all available engines.   * Will be called by the parser to get the amount of all available engines.
586   */   */
587  String LSCPServer::GetAvailableEngines() {  String LSCPServer::GetAvailableEngines() {
588      dmsg(2,("LSCPServer: GetAvailableEngines()\n"));      dmsg(2,("LSCPServer: GetAvailableEngines()\n"));
589      LSCPResultSet result("GigEngine");      LSCPResultSet result("1");
590        return result.Produce();
591    }
592    
593    /**
594     * Will be called by the parser to get a list of all available engines.
595     */
596    String LSCPServer::ListAvailableEngines() {
597        dmsg(2,("LSCPServer: ListAvailableEngines()\n"));
598        LSCPResultSet result("\'GIG\'");
599      return result.Produce();      return result.Produce();
600  }  }
601    
# Line 569  String LSCPServer::GetEngineInfo(String Line 610  String LSCPServer::GetEngineInfo(String
610          Engine* pEngine = EngineFactory::Create(EngineName);          Engine* pEngine = EngineFactory::Create(EngineName);
611          result.Add("DESCRIPTION", pEngine->Description());          result.Add("DESCRIPTION", pEngine->Description());
612          result.Add("VERSION",     pEngine->Version());          result.Add("VERSION",     pEngine->Version());
613          delete pEngine;          EngineFactory::Destroy(pEngine);
614      }      }
615      catch (LinuxSamplerException e) {      catch (LinuxSamplerException e) {
616           result.Error(e);           result.Error(e);
# Line 598  String LSCPServer::GetChannelInfo(uint u Line 639  String LSCPServer::GetChannelInfo(uint u
639          int InstrumentStatus = -1;          int InstrumentStatus = -1;
640          int AudioOutputChannels = 0;          int AudioOutputChannels = 0;
641          String AudioRouting;          String AudioRouting;
642            int Mute = 0;
643            bool Solo = false;
644    
645          if (pEngineChannel) {          if (pEngineChannel) {
646              EngineName          = pEngineChannel->EngineName();              EngineName          = pEngineChannel->EngineName();
# Line 613  String LSCPServer::GetChannelInfo(uint u Line 656  String LSCPServer::GetChannelInfo(uint u
656                  if (AudioRouting != "") AudioRouting += ",";                  if (AudioRouting != "") AudioRouting += ",";
657                  AudioRouting += ToString(pEngineChannel->OutputChannel(chan));                  AudioRouting += ToString(pEngineChannel->OutputChannel(chan));
658              }              }
659                Mute = pEngineChannel->GetMute();
660                Solo = pEngineChannel->GetSolo();
661          }          }
662    
663          result.Add("ENGINE_NAME", EngineName);          result.Add("ENGINE_NAME", EngineName);
# Line 625  String LSCPServer::GetChannelInfo(uint u Line 670  String LSCPServer::GetChannelInfo(uint u
670    
671          result.Add("MIDI_INPUT_DEVICE", GetMidiInputDeviceIndex(pSamplerChannel->GetMidiInputDevice()));          result.Add("MIDI_INPUT_DEVICE", GetMidiInputDeviceIndex(pSamplerChannel->GetMidiInputDevice()));
672          result.Add("MIDI_INPUT_PORT", pSamplerChannel->GetMidiInputPort());          result.Add("MIDI_INPUT_PORT", pSamplerChannel->GetMidiInputPort());
673          if (pSamplerChannel->GetMidiInputChannel() == MidiInputPort::midi_chan_all) result.Add("MIDI_INPUT_CHANNEL", "ALL");          if (pSamplerChannel->GetMidiInputChannel() == midi_chan_all) result.Add("MIDI_INPUT_CHANNEL", "ALL");
674          else result.Add("MIDI_INPUT_CHANNEL", pSamplerChannel->GetMidiInputChannel());          else result.Add("MIDI_INPUT_CHANNEL", pSamplerChannel->GetMidiInputChannel());
675    
676          result.Add("INSTRUMENT_FILE", InstrumentFileName);          result.Add("INSTRUMENT_FILE", InstrumentFileName);
677          result.Add("INSTRUMENT_NR", InstrumentIndex);          result.Add("INSTRUMENT_NR", InstrumentIndex);
678          result.Add("INSTRUMENT_NAME", InstrumentName);          result.Add("INSTRUMENT_NAME", InstrumentName);
679          result.Add("INSTRUMENT_STATUS", InstrumentStatus);          result.Add("INSTRUMENT_STATUS", InstrumentStatus);
680            result.Add("MUTE", Mute == -1 ? "MUTED_BY_SOLO" : (Mute ? "true" : "false"));
681            result.Add("SOLO", Solo);
682      }      }
683      catch (LinuxSamplerException e) {      catch (LinuxSamplerException e) {
684           result.Error(e);           result.Error(e);
# Line 651  String LSCPServer::GetVoiceCount(uint ui Line 698  String LSCPServer::GetVoiceCount(uint ui
698          if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));          if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
699          EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();          EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
700          if (!pEngineChannel) throw LinuxSamplerException("No engine loaded on sampler channel");          if (!pEngineChannel) throw LinuxSamplerException("No engine loaded on sampler channel");
701            if (!pEngineChannel->GetEngine()) throw LinuxSamplerException("No audio output device connected to sampler channel");
702          result.Add(pEngineChannel->GetEngine()->VoiceCount());          result.Add(pEngineChannel->GetEngine()->VoiceCount());
703      }      }
704      catch (LinuxSamplerException e) {      catch (LinuxSamplerException e) {
# Line 671  String LSCPServer::GetStreamCount(uint u Line 719  String LSCPServer::GetStreamCount(uint u
719          if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));          if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
720          EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();          EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
721          if (!pEngineChannel) throw LinuxSamplerException("No engine type assigned to sampler channel");          if (!pEngineChannel) throw LinuxSamplerException("No engine type assigned to sampler channel");
722            if (!pEngineChannel->GetEngine()) throw LinuxSamplerException("No audio output device connected to sampler channel");
723          result.Add(pEngineChannel->GetEngine()->DiskStreamCount());          result.Add(pEngineChannel->GetEngine()->DiskStreamCount());
724      }      }
725      catch (LinuxSamplerException e) {      catch (LinuxSamplerException e) {
# Line 691  String LSCPServer::GetBufferFill(fill_re Line 740  String LSCPServer::GetBufferFill(fill_re
740          if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));          if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
741          EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();          EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
742          if (!pEngineChannel) throw LinuxSamplerException("No engine type assigned to sampler channel");          if (!pEngineChannel) throw LinuxSamplerException("No engine type assigned to sampler channel");
743            if (!pEngineChannel->GetEngine()) throw LinuxSamplerException("No audio output device connected to sampler channel");
744          if (!pEngineChannel->GetEngine()->DiskStreamSupported()) result.Add("NA");          if (!pEngineChannel->GetEngine()->DiskStreamSupported()) result.Add("NA");
745          else {          else {
746              switch (ResponseType) {              switch (ResponseType) {
# Line 715  String LSCPServer::GetAvailableAudioOutp Line 765  String LSCPServer::GetAvailableAudioOutp
765      dmsg(2,("LSCPServer: GetAvailableAudioOutputDrivers()\n"));      dmsg(2,("LSCPServer: GetAvailableAudioOutputDrivers()\n"));
766      LSCPResultSet result;      LSCPResultSet result;
767      try {      try {
768            int n = AudioOutputDeviceFactory::AvailableDrivers().size();
769            result.Add(n);
770        }
771        catch (LinuxSamplerException e) {
772            result.Error(e);
773        }
774        return result.Produce();
775    }
776    
777    String LSCPServer::ListAvailableAudioOutputDrivers() {
778        dmsg(2,("LSCPServer: ListAvailableAudioOutputDrivers()\n"));
779        LSCPResultSet result;
780        try {
781          String s = AudioOutputDeviceFactory::AvailableDriversAsString();          String s = AudioOutputDeviceFactory::AvailableDriversAsString();
782          result.Add(s);          result.Add(s);
783      }      }
# Line 728  String LSCPServer::GetAvailableMidiInput Line 791  String LSCPServer::GetAvailableMidiInput
791      dmsg(2,("LSCPServer: GetAvailableMidiInputDrivers()\n"));      dmsg(2,("LSCPServer: GetAvailableMidiInputDrivers()\n"));
792      LSCPResultSet result;      LSCPResultSet result;
793      try {      try {
794            int n = MidiInputDeviceFactory::AvailableDrivers().size();
795            result.Add(n);
796        }
797        catch (LinuxSamplerException e) {
798            result.Error(e);
799        }
800        return result.Produce();
801    }
802    
803    String LSCPServer::ListAvailableMidiInputDrivers() {
804        dmsg(2,("LSCPServer: ListAvailableMidiInputDrivers()\n"));
805        LSCPResultSet result;
806        try {
807          String s = MidiInputDeviceFactory::AvailableDriversAsString();          String s = MidiInputDeviceFactory::AvailableDriversAsString();
808          result.Add(s);          result.Add(s);
809      }      }
# Line 1240  String LSCPServer::SetMIDIInputChannel(u Line 1316  String LSCPServer::SetMIDIInputChannel(u
1316      try {      try {
1317          SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);          SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1318          if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));          if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1319          pSamplerChannel->SetMidiInputChannel((MidiInputPort::midi_chan_t) MIDIChannel);          pSamplerChannel->SetMidiInputChannel((midi_chan_t) MIDIChannel);
1320      }      }
1321      catch (LinuxSamplerException e) {      catch (LinuxSamplerException e) {
1322           result.Error(e);           result.Error(e);
# Line 1317  String LSCPServer::SetMIDIInput(uint MID Line 1393  String LSCPServer::SetMIDIInput(uint MID
1393          std::map<uint, MidiInputDevice*> devices =  pSampler->GetMidiInputDevices();          std::map<uint, MidiInputDevice*> devices =  pSampler->GetMidiInputDevices();
1394          if (!devices.count(MIDIDeviceId)) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(MIDIDeviceId));          if (!devices.count(MIDIDeviceId)) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(MIDIDeviceId));
1395          MidiInputDevice* pDevice = devices[MIDIDeviceId];          MidiInputDevice* pDevice = devices[MIDIDeviceId];
1396          pSamplerChannel->SetMidiInput(pDevice, MIDIPort, (MidiInputPort::midi_chan_t) MIDIChannel);          pSamplerChannel->SetMidiInput(pDevice, MIDIPort, (midi_chan_t) MIDIChannel);
1397      }      }
1398      catch (LinuxSamplerException e) {      catch (LinuxSamplerException e) {
1399           result.Error(e);           result.Error(e);
# Line 1346  String LSCPServer::SetVolume(double dVol Line 1422  String LSCPServer::SetVolume(double dVol
1422  }  }
1423    
1424  /**  /**
1425     * Will be called by the parser to mute/unmute particular sampler channel.
1426     */
1427    String LSCPServer::SetChannelMute(bool bMute, uint uiSamplerChannel) {
1428        dmsg(2,("LSCPServer: SetChannelMute(bMute=%d,uiSamplerChannel=%d)\n",bMute,uiSamplerChannel));
1429        LSCPResultSet result;
1430        try {
1431            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1432            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1433    
1434            EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
1435            if (!pEngineChannel) throw LinuxSamplerException("No engine type assigned to sampler channel");
1436    
1437            if(!bMute) pEngineChannel->SetMute((HasSoloChannel() && !pEngineChannel->GetSolo()) ? -1 : 0);
1438            else pEngineChannel->SetMute(1);
1439        } catch (LinuxSamplerException e) {
1440            result.Error(e);
1441        }
1442        return result.Produce();
1443    }
1444    
1445    /**
1446     * Will be called by the parser to solo particular sampler channel.
1447     */
1448    String LSCPServer::SetChannelSolo(bool bSolo, uint uiSamplerChannel) {
1449        dmsg(2,("LSCPServer: SetChannelSolo(bSolo=%d,uiSamplerChannel=%d)\n",bSolo,uiSamplerChannel));
1450        LSCPResultSet result;
1451        try {
1452            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1453            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1454    
1455            EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
1456            if (!pEngineChannel) throw LinuxSamplerException("No engine type assigned to sampler channel");
1457    
1458            bool oldSolo = pEngineChannel->GetSolo();
1459            bool hadSoloChannel = HasSoloChannel();
1460            
1461            pEngineChannel->SetSolo(bSolo);
1462            
1463            if(!oldSolo && bSolo) {
1464                if(pEngineChannel->GetMute() == -1) pEngineChannel->SetMute(0);
1465                if(!hadSoloChannel) MuteNonSoloChannels();
1466            }
1467            
1468            if(oldSolo && !bSolo) {
1469                if(!HasSoloChannel()) UnmuteChannels();
1470                else if(!pEngineChannel->GetMute()) pEngineChannel->SetMute(-1);
1471            }
1472        } catch (LinuxSamplerException e) {
1473            result.Error(e);
1474        }
1475        return result.Produce();
1476    }
1477    
1478    /**
1479     * Determines whether there is at least one solo channel in the channel list.
1480     *
1481     * @returns true if there is at least one solo channel in the channel list,
1482     * false otherwise.
1483     */
1484    bool LSCPServer::HasSoloChannel() {
1485        std::map<uint,SamplerChannel*> channels = pSampler->GetSamplerChannels();
1486        std::map<uint,SamplerChannel*>::iterator iter = channels.begin();
1487        for (; iter != channels.end(); iter++) {
1488            EngineChannel* c = iter->second->GetEngineChannel();
1489            if(c && c->GetSolo()) return true;
1490        }
1491    
1492        return false;
1493    }
1494    
1495    /**
1496     * Mutes all unmuted non-solo channels. Notice that the channels are muted
1497     * with -1 which indicates that they are muted because of the presence
1498     * of a solo channel(s). Channels muted with -1 will be automatically unmuted
1499     * when there are no solo channels left.
1500     */
1501    void LSCPServer::MuteNonSoloChannels() {
1502        dmsg(2,("LSCPServer: MuteNonSoloChannels()\n"));
1503        std::map<uint,SamplerChannel*> channels = pSampler->GetSamplerChannels();
1504        std::map<uint,SamplerChannel*>::iterator iter = channels.begin();
1505        for (; iter != channels.end(); iter++) {
1506            EngineChannel* c = iter->second->GetEngineChannel();
1507            if(c && !c->GetSolo() && !c->GetMute()) c->SetMute(-1);
1508        }
1509    }
1510    
1511    /**
1512     * Unmutes all channels that are muted because of the presence
1513     * of a solo channel(s).
1514     */
1515    void  LSCPServer::UnmuteChannels() {
1516        dmsg(2,("LSCPServer: UnmuteChannels()\n"));
1517        std::map<uint,SamplerChannel*> channels = pSampler->GetSamplerChannels();
1518        std::map<uint,SamplerChannel*>::iterator iter = channels.begin();
1519        for (; iter != channels.end(); iter++) {
1520            EngineChannel* c = iter->second->GetEngineChannel();
1521            if(c && c->GetMute() == -1) c->SetMute(0);
1522        }
1523    }
1524    
1525    /**
1526   * Will be called by the parser to reset a particular sampler channel.   * Will be called by the parser to reset a particular sampler channel.
1527   */   */
1528  String LSCPServer::ResetChannel(uint uiSamplerChannel) {  String LSCPServer::ResetChannel(uint uiSamplerChannel) {
# Line 1356  String LSCPServer::ResetChannel(uint uiS Line 1533  String LSCPServer::ResetChannel(uint uiS
1533          if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));          if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1534          EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();          EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
1535          if (!pEngineChannel) throw LinuxSamplerException("No engine type assigned to sampler channel");          if (!pEngineChannel) throw LinuxSamplerException("No engine type assigned to sampler channel");
1536          pEngineChannel->GetEngine()->Reset();          pEngineChannel->Reset();
1537      }      }
1538      catch (LinuxSamplerException e) {      catch (LinuxSamplerException e) {
1539           result.Error(e);           result.Error(e);
# Line 1374  String LSCPServer::ResetSampler() { Line 1551  String LSCPServer::ResetSampler() {
1551      return result.Produce();      return result.Produce();
1552  }  }
1553    
1554    /**
1555     * Will be called by the parser to return general informations about this
1556     * sampler.
1557     */
1558    String LSCPServer::GetServerInfo() {
1559        dmsg(2,("LSCPServer: GetServerInfo()\n"));
1560        LSCPResultSet result;
1561        result.Add("DESCRIPTION", "LinuxSampler - modular, streaming capable sampler");
1562        result.Add("VERSION", VERSION);
1563        result.Add("PROTOCOL_VERSION", "1.0");
1564        return result.Produce();
1565    }
1566    
1567    /**
1568     * Will be called by the parser to return the current number of all active voices.
1569     */
1570    String LSCPServer::GetTotalVoiceCount() {
1571        dmsg(2,("LSCPServer: GetTotalVoiceCount()\n"));
1572        LSCPResultSet result;
1573        result.Add(pSampler->GetVoiceCount());
1574        return result.Produce();
1575    }
1576    
1577    /**
1578     * Will be called by the parser to return the maximum number of voices.
1579     */
1580    String LSCPServer::GetTotalVoiceCountMax() {
1581        dmsg(2,("LSCPServer: GetTotalVoiceCountMax()\n"));
1582        LSCPResultSet result;
1583        result.Add(EngineFactory::EngineInstances().size() * CONFIG_MAX_VOICES);
1584        return result.Produce();
1585    }
1586    
1587  /**  /**
1588   * Will be called by the parser to subscribe a client (frontend) on the   * Will be called by the parser to subscribe a client (frontend) on the
1589   * server for receiving event messages.   * server for receiving event messages.
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