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

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revision 198 by senkov, Tue Jul 13 15:36:16 2004 UTC revision 210 by schoenebeck, Sat Jul 24 12:33:49 2004 UTC
# Line 25  Line 25 
25  #include "lscpevent.h"  #include "lscpevent.h"
26    
27  #include "../engines/gig/Engine.h"  #include "../engines/gig/Engine.h"
28  #include "../audiodriver/AudioOutputDeviceFactory.h"  #include "../drivers/audio/AudioOutputDeviceFactory.h"
29  #include "../mididriver/MidiInputDeviceFactory.h"  #include "../drivers/midi/MidiInputDeviceFactory.h"
30    
31  /**  /**
32   * Below are a few static members of the LSCPServer class.   * Below are a few static members of the LSCPServer class.
# 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 89  int LSCPServer::Main() { Line 89  int LSCPServer::Main() {
89      FD_ZERO(&fdSet);      FD_ZERO(&fdSet);
90      FD_SET(hSocket, &fdSet);      FD_SET(hSocket, &fdSet);
91      int maxSessions = hSocket;      int maxSessions = hSocket;
   
     // Parser initialization  
     yyparse_param_t yyparse_param;  
     yyparse_param.pServer = this;  
92    
93      while (true) {      while (true) {
94          fd_set selectSet = fdSet;          fd_set selectSet = fdSet;
# Line 104  int LSCPServer::Main() { Line 100  int LSCPServer::Main() {
100                  close(hSocket);                  close(hSocket);
101                  exit(EXIT_FAILURE);                  exit(EXIT_FAILURE);
102          }          }
103            
104          //Accept new connections now (if any)          //Accept new connections now (if any)
105          if (FD_ISSET(hSocket, &selectSet)) {          if (FD_ISSET(hSocket, &selectSet)) {
106                  int socket = accept(hSocket, (sockaddr*) &client, (socklen_t*) &length);                  int socket = accept(hSocket, (sockaddr*) &client, (socklen_t*) &length);
# Line 118  int LSCPServer::Main() { Line 114  int LSCPServer::Main() {
114                          exit(EXIT_FAILURE);                          exit(EXIT_FAILURE);
115                  }                  }
116    
117                  hSessions.push_back(socket);                  // Parser initialization
118                    yyparse_param_t yyparse_param;
119                    yyparse_param.pServer  = this;
120                    yyparse_param.hSession = socket;
121    
122                    Sessions.push_back(yyparse_param);
123                  FD_SET(socket, &fdSet);                  FD_SET(socket, &fdSet);
124                  if (socket > maxSessions)                  if (socket > maxSessions)
125                          maxSessions = socket;                          maxSessions = socket;
# Line 128  int LSCPServer::Main() { Line 129  int LSCPServer::Main() {
129          }          }
130    
131          //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.
132          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++) {
133                  if (FD_ISSET(*iter, &selectSet)) {      //Was it this socket?                  if (FD_ISSET((*iter).hSession, &selectSet)) {   //Was it this socket?
134                          if (GetLSCPCommand(iter)) {     //Have we read the entire command?                          if (GetLSCPCommand(iter)) {     //Have we read the entire command?
135                                  dmsg(3,("LSCPServer: Got command on socket %d, calling parser.\n", currentSocket));                                  dmsg(3,("LSCPServer: Got command on socket %d, calling parser.\n", currentSocket));
136                                  yylex_init(&yyparse_param.pScanner);                                  yylex_init(&((*iter).pScanner)); //FIXME: should me moved out of this loop and initialized only when a new session is created
137                                  currentSocket = *iter;  //a hack                                  currentSocket = (*iter).hSession;  //a hack
138                                  int result = yyparse(&yyparse_param);                                  if ((*iter).bVerbose) { // if echo mode enabled
139                                        AnswerClient(bufferedCommands[currentSocket]);
140                                    }
141                                    int result = yyparse(&(*iter));
142                                  currentSocket = -1;     //continuation of a hack                                  currentSocket = -1;     //continuation of a hack
143                                  dmsg(3,("LSCPServer: Done parsing on socket %d.\n", currentSocket));                                  dmsg(3,("LSCPServer: Done parsing on socket %d.\n", currentSocket));
144                                  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 143  int LSCPServer::Main() { Line 147  int LSCPServer::Main() {
147                          }                          }
148                          //socket may have been closed, iter may be invalid, get out of the loop for now.                          //socket may have been closed, iter may be invalid, get out of the loop for now.
149                          //we'll be back if there is data.                          //we'll be back if there is data.
150                          break;                          break;
151                  }                  }
152          }          }
153    
# Line 159  int LSCPServer::Main() { Line 163  int LSCPServer::Main() {
163      //yylex_destroy(yyparse_param.pScanner);      //yylex_destroy(yyparse_param.pScanner);
164  }  }
165    
166  void LSCPServer::CloseConnection( std::vector<int>::iterator iter ) {  void LSCPServer::CloseConnection( std::vector<yyparse_param_t>::iterator iter ) {
167          int socket = *iter;          int socket = (*iter).hSession;
168          dmsg(1,("LSCPServer: Client connection terminated on socket:%d.\n",socket));          dmsg(1,("LSCPServer: Client connection terminated on socket:%d.\n",socket));
169          LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_misc, "Client connection terminated on socket", socket));          LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_misc, "Client connection terminated on socket", socket));
170          hSessions.erase(iter);          Sessions.erase(iter);
171          FD_CLR(socket,  &fdSet);          FD_CLR(socket,  &fdSet);
172          SubscriptionMutex.Lock(); //Must unsubscribe this socket from all events (if any)          SubscriptionMutex.Lock(); //Must unsubscribe this socket from all events (if any)
173          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 175  void LSCPServer::CloseConnection( std::v Line 179  void LSCPServer::CloseConnection( std::v
179          bufferedNotifies.erase(socket);          bufferedNotifies.erase(socket);
180          close(socket);          close(socket);
181          NotifyMutex.Unlock();          NotifyMutex.Unlock();
182            //yylex_destroy((*iter).pScanner);
183  }  }
184    
185  void LSCPServer::SendLSCPNotify( LSCPEvent event ) {  void LSCPServer::SendLSCPNotify( LSCPEvent event ) {
# Line 227  extern int GetLSCPCommand( void *buf, in Line 232  extern int GetLSCPCommand( void *buf, in
232   * If command is read, it will return true. Otherwise false is returned.   * If command is read, it will return true. Otherwise false is returned.
233   * 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.
234   */   */
235  bool LSCPServer::GetLSCPCommand( std::vector<int>::iterator iter ) {  bool LSCPServer::GetLSCPCommand( std::vector<yyparse_param_t>::iterator iter ) {
236          int socket = *iter;          int socket = (*iter).hSession;
237          char c;          char c;
238          int i = 0;          int i = 0;
239          while (true) {          while (true) {
# Line 238  bool LSCPServer::GetLSCPCommand( std::ve Line 243  bool LSCPServer::GetLSCPCommand( std::ve
243                          break;                          break;
244                  }                  }
245                  if (result == 1) {                  if (result == 1) {
246                          if (c == '\r')                          if (c == '\r')
247                                  continue; //Ignore CR                                  continue; //Ignore CR
248                          if (c == '\n') {                          if (c == '\n') {
249                                  LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_misc, "Received \'" + bufferedCommands[socket] + "\' on socket", socket));                                  LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_misc, "Received \'" + bufferedCommands[socket] + "\' on socket", socket));
# Line 265  bool LSCPServer::GetLSCPCommand( std::ve Line 270  bool LSCPServer::GetLSCPCommand( std::ve
270                                          break;                                          break;
271                                  case EAGAIN:                                  case EAGAIN:
272                                          dmsg(2,("LSCPScanner: The socket is marked non-blocking and the receive operation would block, or a receive timeout had been set and the timeout expired before data was received.\n"));                                          dmsg(2,("LSCPScanner: The socket is marked non-blocking and the receive operation would block, or a receive timeout had been set and the timeout expired before data was received.\n"));
273                                          break;                                          break;
274                                  case EINTR:                                  case EINTR:
275                                          dmsg(2,("LSCPScanner: The receive was interrupted by delivery of a signal before any data were available.\n"));                                          dmsg(2,("LSCPScanner: The receive was interrupted by delivery of a signal before any data were available.\n"));
276                                          break;                                          break;
277                                  case EFAULT:                                  case EFAULT:
278                                          dmsg(2,("LSCPScanner: The receive buffer pointer(s) point outside the process's address space.\n"));                                          dmsg(2,("LSCPScanner: The receive buffer pointer(s) point outside the process's address space.\n"));
279                                          break;                                          break;
280                                  case EINVAL:                                  case EINVAL:
281                                          dmsg(2,("LSCPScanner: Invalid argument passed.\n"));                                          dmsg(2,("LSCPScanner: Invalid argument passed.\n"));
282                                          break;                                          break;
283                                  case ENOMEM:                                  case ENOMEM:
284                                          dmsg(2,("LSCPScanner: Could not allocate memory for recvmsg.\n"));                                          dmsg(2,("LSCPScanner: Could not allocate memory for recvmsg.\n"));
285                                          break;                                          break;
286                                  default:                                  default:
287                                          dmsg(2,("LSCPScanner: Unknown recv() error.\n"));                                          dmsg(2,("LSCPScanner: Unknown recv() error.\n"));
288                                          break;                                          break;
289                          }                          }
290                          CloseConnection(iter);                          CloseConnection(iter);
291                          break;                          break;
292                  }                  }
# Line 454  String LSCPServer::GetChannels() { Line 459  String LSCPServer::GetChannels() {
459  }  }
460    
461  /**  /**
462     * Will be called by the parser to get the list of sampler channels.
463     */
464    String LSCPServer::ListChannels() {
465        dmsg(2,("LSCPServer: ListChannels()\n"));
466        String list;
467        std::map<uint,SamplerChannel*> channels = pSampler->GetSamplerChannels();
468        std::map<uint,SamplerChannel*>::iterator iter = channels.begin();
469        for (; iter != channels.end(); iter++) {
470            if (list != "") list += ",";
471            list += ToString(iter->first);
472        }
473        LSCPResultSet result;
474        result.Add(list);
475        return result.Produce();
476    }
477    
478    /**
479   * Will be called by the parser to add a sampler channel.   * Will be called by the parser to add a sampler channel.
480   */   */
481  String LSCPServer::AddChannel() {  String LSCPServer::AddChannel() {
# Line 911  String LSCPServer::GetMidiInputPortParam Line 933  String LSCPServer::GetMidiInputPortParam
933          std::map<String,DeviceCreationParameter*> parameters = pPort->DeviceParameters();          std::map<String,DeviceCreationParameter*> parameters = pPort->DeviceParameters();
934          if (!parameters[ParameterName]) throw LinuxSamplerException("Midi port does not provice a parameters '" + ParameterName + "'.");          if (!parameters[ParameterName]) throw LinuxSamplerException("Midi port does not provice a parameters '" + ParameterName + "'.");
935          DeviceCreationParameter* pParameter = parameters[ParameterName];          DeviceCreationParameter* pParameter = parameters[ParameterName];
936            
937          // return all fields of this audio channel parameter          // return all fields of this audio channel parameter
938          result.Add("TYPE",         pParameter->Type());          result.Add("TYPE",         pParameter->Type());
939          result.Add("DESCRIPTION",  pParameter->Description());          result.Add("DESCRIPTION",  pParameter->Description());
# Line 1074  String LSCPServer::SetAudioOutputType(St Line 1096  String LSCPServer::SetAudioOutputType(St
1096          if (!pSamplerChannel) throw LinuxSamplerException("Invalid channel number " + ToString(uiSamplerChannel));          if (!pSamplerChannel) throw LinuxSamplerException("Invalid channel number " + ToString(uiSamplerChannel));
1097          // Driver type name aliasing...          // Driver type name aliasing...
1098          if (AudioOutputDriver == "ALSA") AudioOutputDriver = "Alsa";          if (AudioOutputDriver == "ALSA") AudioOutputDriver = "Alsa";
1099          if (AudioOutputDriver == "JACK") AudioOutputDriver = "Jack";                  if (AudioOutputDriver == "JACK") AudioOutputDriver = "Jack";
1100          // Check if there's one audio output device already created          // Check if there's one audio output device already created
1101          // for the intended audio driver type (AudioOutputDriver)...          // for the intended audio driver type (AudioOutputDriver)...
1102          AudioOutputDevice *pDevice = NULL;          AudioOutputDevice *pDevice = NULL;
# Line 1273  String LSCPServer::UnsubscribeNotificati Line 1295  String LSCPServer::UnsubscribeNotificati
1295      return result.Produce();      return result.Produce();
1296  }  }
1297    
1298    /**
1299     * Will be called by the parser to enable or disable echo mode; if echo
1300     * mode is enabled, all commands from the client will (immediately) be
1301     * echoed back to the client.
1302     */
1303    String LSCPServer::SetEcho(yyparse_param_t* pSession, double boolean_value) {
1304        dmsg(2,("LSCPServer: SetEcho(val=%f)\n", boolean_value));
1305        LSCPResultSet result;
1306        try {
1307            if      (boolean_value == 0) pSession->bVerbose = false;
1308            else if (boolean_value == 1) pSession->bVerbose = true;
1309            else throw LinuxSamplerException("Not a boolean value, must either be 0 or 1");
1310        }
1311        catch (LinuxSamplerException e) {
1312             result.Error(e);
1313        }
1314        return result.Produce();
1315    }
1316    
1317  // Instrument loader constructor.  // Instrument loader constructor.
1318  LSCPLoadInstrument::LSCPLoadInstrument(Engine* pEngine, String Filename, uint uiInstrument)  LSCPLoadInstrument::LSCPLoadInstrument(Engine* pEngine, String Filename, uint uiInstrument)
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