/[svn]/linuxsampler/trunk/src/network/lscpserver.cpp
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revision 209 by schoenebeck, Sun Jul 18 00:29:39 2004 UTC revision 219 by schoenebeck, Tue Aug 17 20:35:04 2004 UTC
# Line 43  Line 43 
43   */   */
44  fd_set LSCPServer::fdSet;  fd_set LSCPServer::fdSet;
45  int LSCPServer::currentSocket = -1;  int LSCPServer::currentSocket = -1;
46  std::vector<int> LSCPServer::hSessions = std::vector<int>();  std::vector<yyparse_param_t> LSCPServer::Sessions = std::vector<yyparse_param_t>();
47  std::map<int,String> LSCPServer::bufferedNotifies = std::map<int,String>();  std::map<int,String> LSCPServer::bufferedNotifies = std::map<int,String>();
48  std::map<int,String> LSCPServer::bufferedCommands = std::map<int,String>();  std::map<int,String> LSCPServer::bufferedCommands = std::map<int,String>();
49  std::map< LSCPEvent::event_t, std::list<int> > LSCPServer::eventSubscriptions = std::map< LSCPEvent::event_t, std::list<int> >();  std::map< LSCPEvent::event_t, std::list<int> > LSCPServer::eventSubscriptions = std::map< LSCPEvent::event_t, std::list<int> >();
# Line 61  LSCPServer::LSCPServer(Sampler* pSampler Line 61  LSCPServer::LSCPServer(Sampler* pSampler
61      LSCPEvent::RegisterEvent(LSCPEvent::event_misc, "MISCELLANEOUS");      LSCPEvent::RegisterEvent(LSCPEvent::event_misc, "MISCELLANEOUS");
62  }  }
63    
64    /**
65     * Blocks the calling thread until the LSCP Server is initialized and
66     * accepting socket connections, if the server is already initialized then
67     * this method will return immediately.
68     * @param TimeoutSeconds     - optional: max. wait time in seconds
69     *                             (default: 0s)
70     * @param TimeoutNanoSeconds - optional: max wait time in nano seconds
71     *                             (default: 0ns)
72     * @returns  0 on success, a value less than 0 if timeout exceeded
73     */
74    int LSCPServer::WaitUntilInitialized(long TimeoutSeconds, long TimeoutNanoSeconds) {
75        return Initialized.WaitAndUnlockIf(false, TimeoutSeconds, TimeoutNanoSeconds);
76    }
77    
78  int LSCPServer::Main() {  int LSCPServer::Main() {
79      int hSocket = socket(AF_INET, SOCK_STREAM, 0);      int hSocket = socket(AF_INET, SOCK_STREAM, 0);
80      if (hSocket < 0) {      if (hSocket < 0) {
# Line 81  int LSCPServer::Main() { Line 95  int LSCPServer::Main() {
95      }      }
96    
97      listen(hSocket, 1);      listen(hSocket, 1);
98      dmsg(1,("LSCPServer: Server running.\n")); // server running      Initialized.Set(true);
99    
100      // now wait for client connections and handle their requests      // now wait for client connections and handle their requests
101      sockaddr_in client;      sockaddr_in client;
# Line 90  int LSCPServer::Main() { Line 104  int LSCPServer::Main() {
104      FD_SET(hSocket, &fdSet);      FD_SET(hSocket, &fdSet);
105      int maxSessions = hSocket;      int maxSessions = hSocket;
106    
     // Parser initialization  
     yyparse_param_t yyparse_param;  
     yyparse_param.pServer = this;  
   
107      while (true) {      while (true) {
108          fd_set selectSet = fdSet;          fd_set selectSet = fdSet;
109          int retval = select(maxSessions+1, &selectSet, NULL, NULL, NULL);          int retval = select(maxSessions+1, &selectSet, NULL, NULL, NULL);
# Line 118  int LSCPServer::Main() { Line 128  int LSCPServer::Main() {
128                          exit(EXIT_FAILURE);                          exit(EXIT_FAILURE);
129                  }                  }
130    
131                  hSessions.push_back(socket);                  // Parser initialization
132                    yyparse_param_t yyparse_param;
133                    yyparse_param.pServer  = this;
134                    yyparse_param.hSession = socket;
135    
136                    Sessions.push_back(yyparse_param);
137                  FD_SET(socket, &fdSet);                  FD_SET(socket, &fdSet);
138                  if (socket > maxSessions)                  if (socket > maxSessions)
139                          maxSessions = socket;                          maxSessions = socket;
# Line 128  int LSCPServer::Main() { Line 143  int LSCPServer::Main() {
143          }          }
144    
145          //Something was selected and it was not the hSocket, so it must be some command(s) coming.          //Something was selected and it was not the hSocket, so it must be some command(s) coming.
146          for (std::vector<int>::iterator iter = hSessions.begin(); iter !=  hSessions.end(); iter++) {          for (std::vector<yyparse_param_t>::iterator iter = Sessions.begin(); iter != Sessions.end(); iter++) {
147                  if (FD_ISSET(*iter, &selectSet)) {      //Was it this socket?                  if (FD_ISSET((*iter).hSession, &selectSet)) {   //Was it this socket?
148                          if (GetLSCPCommand(iter)) {     //Have we read the entire command?                          if (GetLSCPCommand(iter)) {     //Have we read the entire command?
149                                  dmsg(3,("LSCPServer: Got command on socket %d, calling parser.\n", currentSocket));                                  dmsg(3,("LSCPServer: Got command on socket %d, calling parser.\n", currentSocket));
150                                  yylex_init(&yyparse_param.pScanner);                                  int dummy; // just a temporary hack to fulfill the restart() function prototype
151                                  currentSocket = *iter;  //a hack                                  restart(NULL, dummy); // restart the 'scanner'
152                                  int result = yyparse(&yyparse_param);                                  currentSocket = (*iter).hSession;  //a hack
153                                    if ((*iter).bVerbose) { // if echo mode enabled
154                                        AnswerClient(bufferedCommands[currentSocket]);
155                                    }
156                                    int result = yyparse(&(*iter));
157                                  currentSocket = -1;     //continuation of a hack                                  currentSocket = -1;     //continuation of a hack
158                                  dmsg(3,("LSCPServer: Done parsing on socket %d.\n", currentSocket));                                  dmsg(3,("LSCPServer: Done parsing on socket %d.\n", currentSocket));
159                                  if (result == LSCP_QUIT) { //Was it a quit command by any chance?                                  if (result == LSCP_QUIT) { //Was it a quit command by any chance?
# Line 155  int LSCPServer::Main() { Line 174  int LSCPServer::Main() {
174          }          }
175          NotifyBufferMutex.Unlock();          NotifyBufferMutex.Unlock();
176      }      }
     //It will never get here anyway  
     //yylex_destroy(yyparse_param.pScanner);  
177  }  }
178    
179  void LSCPServer::CloseConnection( std::vector<int>::iterator iter ) {  void LSCPServer::CloseConnection( std::vector<yyparse_param_t>::iterator iter ) {
180          int socket = *iter;          int socket = (*iter).hSession;
181          dmsg(1,("LSCPServer: Client connection terminated on socket:%d.\n",socket));          dmsg(1,("LSCPServer: Client connection terminated on socket:%d.\n",socket));
182          LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_misc, "Client connection terminated on socket", socket));          LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_misc, "Client connection terminated on socket", socket));
183          hSessions.erase(iter);          Sessions.erase(iter);
184          FD_CLR(socket,  &fdSet);          FD_CLR(socket,  &fdSet);
185          SubscriptionMutex.Lock(); //Must unsubscribe this socket from all events (if any)          SubscriptionMutex.Lock(); //Must unsubscribe this socket from all events (if any)
186          for (std::map< LSCPEvent::event_t, std::list<int> >::iterator iter = eventSubscriptions.begin(); iter != eventSubscriptions.end(); iter++) {          for (std::map< LSCPEvent::event_t, std::list<int> >::iterator iter = eventSubscriptions.begin(); iter != eventSubscriptions.end(); iter++) {
# Line 227  extern int GetLSCPCommand( void *buf, in Line 244  extern int GetLSCPCommand( void *buf, in
244   * If command is read, it will return true. Otherwise false is returned.   * If command is read, it will return true. Otherwise false is returned.
245   * In any case the received portion (complete or incomplete) is saved into bufferedCommand map.   * In any case the received portion (complete or incomplete) is saved into bufferedCommand map.
246   */   */
247  bool LSCPServer::GetLSCPCommand( std::vector<int>::iterator iter ) {  bool LSCPServer::GetLSCPCommand( std::vector<yyparse_param_t>::iterator iter ) {
248          int socket = *iter;          int socket = (*iter).hSession;
249          char c;          char c;
250          int i = 0;          int i = 0;
251          while (true) {          while (true) {
# Line 724  String LSCPServer::GetMidiInputDriverPar Line 741  String LSCPServer::GetMidiInputDriverPar
741          DeviceCreationParameter* pParameter = MidiInputDeviceFactory::GetDriverParameter(Driver, Parameter);          DeviceCreationParameter* pParameter = MidiInputDeviceFactory::GetDriverParameter(Driver, Parameter);
742          result.Add("TYPE",         pParameter->Type());          result.Add("TYPE",         pParameter->Type());
743          result.Add("DESCRIPTION",  pParameter->Description());          result.Add("DESCRIPTION",  pParameter->Description());
744          result.Add("MANDATORY",    pParameter->Mandatory());          result.Add("MANDATORY",    (pParameter->Mandatory())    ? "true" : "false");
745          result.Add("FIX",          pParameter->Fix());          result.Add("FIX",          (pParameter->Fix())          ? "true" : "false");
746          result.Add("MULTIPLICITY", pParameter->Multiplicity());          result.Add("MULTIPLICITY", (pParameter->Multiplicity()) ? "true" : "false");
747          if (pParameter->Depends())       result.Add("DEPENDS",       pParameter->Depends());          if (pParameter->Depends())       result.Add("DEPENDS",       *pParameter->Depends());
748          if (pParameter->Default())       result.Add("DEFAULT",       pParameter->Default());          if (pParameter->Default())       result.Add("DEFAULT",       *pParameter->Default());
749          if (pParameter->RangeMin())      result.Add("RANGE_MIN",     pParameter->RangeMin());          if (pParameter->RangeMin())      result.Add("RANGE_MIN",     *pParameter->RangeMin());
750          if (pParameter->RangeMax())      result.Add("RANGE_MAX",     pParameter->RangeMax());          if (pParameter->RangeMax())      result.Add("RANGE_MAX",     *pParameter->RangeMax());
751          if (pParameter->Possibilities()) result.Add("POSSIBILITIES", pParameter->Possibilities());          if (pParameter->Possibilities()) result.Add("POSSIBILITIES", *pParameter->Possibilities());
752      }      }
753      catch (LinuxSamplerException e) {      catch (LinuxSamplerException e) {
754          result.Error(e);          result.Error(e);
# Line 746  String LSCPServer::GetAudioOutputDriverP Line 763  String LSCPServer::GetAudioOutputDriverP
763          DeviceCreationParameter* pParameter = AudioOutputDeviceFactory::GetDriverParameter(Driver, Parameter);          DeviceCreationParameter* pParameter = AudioOutputDeviceFactory::GetDriverParameter(Driver, Parameter);
764          result.Add("TYPE",         pParameter->Type());          result.Add("TYPE",         pParameter->Type());
765          result.Add("DESCRIPTION",  pParameter->Description());          result.Add("DESCRIPTION",  pParameter->Description());
766          result.Add("MANDATORY",    pParameter->Mandatory());          result.Add("MANDATORY",    (pParameter->Mandatory())    ? "true" : "false");
767          result.Add("FIX",          pParameter->Fix());          result.Add("FIX",          (pParameter->Fix())          ? "true" : "false");
768          result.Add("MULTIPLICITY", pParameter->Multiplicity());          result.Add("MULTIPLICITY", (pParameter->Multiplicity()) ? "true" : "false");
769          if (pParameter->Depends())       result.Add("DEPENDS",       pParameter->Depends());          if (pParameter->Depends())       result.Add("DEPENDS",       *pParameter->Depends());
770          if (pParameter->Default())       result.Add("DEFAULT",       pParameter->Default());          if (pParameter->Default())       result.Add("DEFAULT",       *pParameter->Default());
771          if (pParameter->RangeMin())      result.Add("RANGE_MIN",     pParameter->RangeMin());          if (pParameter->RangeMin())      result.Add("RANGE_MIN",     *pParameter->RangeMin());
772          if (pParameter->RangeMax())      result.Add("RANGE_MAX",     pParameter->RangeMax());          if (pParameter->RangeMax())      result.Add("RANGE_MAX",     *pParameter->RangeMax());
773          if (pParameter->Possibilities()) result.Add("POSSIBILITIES", pParameter->Possibilities());          if (pParameter->Possibilities()) result.Add("POSSIBILITIES", *pParameter->Possibilities());
774      }      }
775      catch (LinuxSamplerException e) {      catch (LinuxSamplerException e) {
776          result.Error(e);          result.Error(e);
# Line 1265  String LSCPServer::ResetChannel(uint uiS Line 1282  String LSCPServer::ResetChannel(uint uiS
1282  }  }
1283    
1284  /**  /**
1285     * Will be called by the parser to reset the whole sampler.
1286     */
1287    String LSCPServer::ResetSampler() {
1288        dmsg(2,("LSCPServer: ResetSampler()\n"));
1289        pSampler->Reset();
1290        LSCPResultSet result;
1291        return result.Produce();
1292    }
1293    
1294    /**
1295   * 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
1296   * server for receiving event messages.   * server for receiving event messages.
1297   */   */
# Line 1290  String LSCPServer::UnsubscribeNotificati Line 1317  String LSCPServer::UnsubscribeNotificati
1317      return result.Produce();      return result.Produce();
1318  }  }
1319    
1320    /**
1321     * Will be called by the parser to enable or disable echo mode; if echo
1322     * mode is enabled, all commands from the client will (immediately) be
1323     * echoed back to the client.
1324     */
1325    String LSCPServer::SetEcho(yyparse_param_t* pSession, double boolean_value) {
1326        dmsg(2,("LSCPServer: SetEcho(val=%f)\n", boolean_value));
1327        LSCPResultSet result;
1328        try {
1329            if      (boolean_value == 0) pSession->bVerbose = false;
1330            else if (boolean_value == 1) pSession->bVerbose = true;
1331            else throw LinuxSamplerException("Not a boolean value, must either be 0 or 1");
1332        }
1333        catch (LinuxSamplerException e) {
1334             result.Error(e);
1335        }
1336        return result.Produce();
1337    }
1338    
1339  // Instrument loader constructor.  // Instrument loader constructor.
1340  LSCPLoadInstrument::LSCPLoadInstrument(Engine* pEngine, String Filename, uint uiInstrument)  LSCPLoadInstrument::LSCPLoadInstrument(Engine* pEngine, String Filename, uint uiInstrument)
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