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

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revision 35 by schoenebeck, Fri Mar 5 13:46:15 2004 UTC revision 184 by senkov, Wed Jul 7 02:00:37 2004 UTC
# Line 2  Line 2 
2   *                                                                         *   *                                                                         *
3   *   LinuxSampler - modular, streaming capable sampler                     *   *   LinuxSampler - modular, streaming capable sampler                     *
4   *                                                                         *   *                                                                         *
5   *   Copyright (C) 2003 by Benno Senoner and Christian Schoenebeck         *   *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *
6   *                                                                         *   *                                                                         *
7   *   This program is free software; you can redistribute it and/or modify  *   *   This program is free software; you can redistribute it and/or modify  *
8   *   it under the terms of the GNU General Public License as published by  *   *   it under the terms of the GNU General Public License as published by  *
# Line 21  Line 21 
21   ***************************************************************************/   ***************************************************************************/
22    
23  #include "lscpserver.h"  #include "lscpserver.h"
24    #include "lscpresultset.h"
25    #include "lscpevent.h"
26    
27  LSCPServer::LSCPServer(AudioThread* pEngine) : Thread(false, 0, -4) {  #include "../engines/gig/Engine.h"
28      this->pEngine = pEngine;  #include "../audiodriver/AudioOutputDeviceFactory.h"
29    #include "../mididriver/MidiInputDeviceFactory.h"
30    
31    /**
32     * Below are a few static members of the LSCPServer class.
33     * The big assumption here is that LSCPServer is going to remain a singleton.
34     * These members are used to support client connections.
35     * Class handles multiple connections at the same time using select() and non-blocking recv()
36     * Commands are processed by a single LSCPServer thread.
37     * Notifications are delivered either by the thread that originated them
38     * or (if the resultset is currently in progress) by the LSCPServer thread
39     * after the resultset was sent out.
40     * This makes sure that resultsets can not be interrupted by notifications.
41     * This also makes sure that the thread sending notification is not blocked
42     * by the LSCPServer thread.
43     */
44    fd_set LSCPServer::fdSet;
45    int LSCPServer::currentSocket = -1;
46    std::vector<int> LSCPServer::hSessions = std::vector<int>();
47    std::map<int,String> LSCPServer::bufferedNotifies = std::map<int,String>();
48    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> >();
50    Mutex LSCPServer::NotifyMutex = Mutex();
51    Mutex LSCPServer::NotifyBufferMutex = Mutex();
52    Mutex LSCPServer::SubscriptionMutex = Mutex();
53    
54    LSCPServer::LSCPServer(Sampler* pSampler) : Thread(false, 0, -4) {
55        this->pSampler = pSampler;
56        LSCPEvent::RegisterEvent(LSCPEvent::event_channels, "CHANNELS");
57        LSCPEvent::RegisterEvent(LSCPEvent::event_voice_count, "VOICE_COUNT");
58        LSCPEvent::RegisterEvent(LSCPEvent::event_stream_count, "STREAM_COUNT");
59        LSCPEvent::RegisterEvent(LSCPEvent::event_buffer_fill, "BUFFER_FILL");
60        LSCPEvent::RegisterEvent(LSCPEvent::event_info, "INFO");
61        LSCPEvent::RegisterEvent(LSCPEvent::event_misc, "MISCELLANEOUS");
62  }  }
63    
64  int LSCPServer::Main() {  int LSCPServer::Main() {
65      hSocket = socket(AF_INET, SOCK_STREAM, 0);      int hSocket = socket(AF_INET, SOCK_STREAM, 0);
66      if (hSocket < 0) {      if (hSocket < 0) {
67          std::cerr << "LSCPServer: Could not create server socket." << std::endl;          std::cerr << "LSCPServer: Could not create server socket." << std::endl;
68          return -1;          //return -1;
69            exit(EXIT_FAILURE);
70      }      }
71    
72      SocketAddress.sin_family      = AF_INET;      SocketAddress.sin_family      = AF_INET;
# Line 40  int LSCPServer::Main() { Line 76  int LSCPServer::Main() {
76      if (bind(hSocket, (sockaddr*) &SocketAddress, sizeof(sockaddr_in)) < 0) {      if (bind(hSocket, (sockaddr*) &SocketAddress, sizeof(sockaddr_in)) < 0) {
77          std::cerr << "LSCPServer: Could not bind server socket." << std::endl;          std::cerr << "LSCPServer: Could not bind server socket." << std::endl;
78          close(hSocket);          close(hSocket);
79          return -1;          //return -1;
80            exit(EXIT_FAILURE);
81      }      }
82    
83      listen(hSocket, 1);      listen(hSocket, 1);
# Line 49  int LSCPServer::Main() { Line 86  int LSCPServer::Main() {
86      // now wait for client connections and handle their requests      // now wait for client connections and handle their requests
87      sockaddr_in client;      sockaddr_in client;
88      int length = sizeof(client);      int length = sizeof(client);
89      while (true) {      struct timeval tv;
90          hSession = accept(hSocket, (sockaddr*) &client, (socklen_t*) &length);      tv.tv_sec = 30;
91          if (hSession < 0) {      tv.tv_usec = 0;
92              std::cerr << "LSCPServer: Client connection failed." << std::endl;      FD_ZERO(&fdSet);
93              close(hSocket);      FD_SET(hSocket, &fdSet);
94              return -1;      int maxSessions = hSocket;
95          }  
96        // Parser initialization
97          dmsg(1,("LSCPServer: Client connection established.\n"));      yyparse_param_t yyparse_param;
98          //send(hSession, "Welcome!\r\n", 10, 0);      yyparse_param.pServer = this;
   
         // Parser invocation  
         yyparse_param_t yyparse_param;  
         yyparse_param.pServer = this;  
         yylex_init(&yyparse_param.pScanner);  
         while (yyparse(&yyparse_param) == LSCP_SYNTAX_ERROR); // recall parser in case of syntax error  
         yylex_destroy(yyparse_param.pScanner);  
99    
100          close(hSession);      while (true) {
101          dmsg(1,("LSCPServer: Client connection terminated.\n"));          fd_set selectSet = fdSet;
102            int retval = select(maxSessions+1, &selectSet, NULL, NULL, &tv);
103            if (retval == 0)
104                    continue; //Nothing in 30 seconds, try again
105            if (retval == -1) {
106                    std::cerr << "LSCPServer: Socket select error." << std::endl;
107                    close(hSocket);
108                    exit(EXIT_FAILURE);
109            }
110            
111            //Accept new connections now (if any)
112            if (FD_ISSET(hSocket, &selectSet)) {
113                    int socket = accept(hSocket, (sockaddr*) &client, (socklen_t*) &length);
114                    if (socket < 0) {
115                            std::cerr << "LSCPServer: Client connection failed." << std::endl;
116                            exit(EXIT_FAILURE);
117                    }
118    
119                    if (fcntl(socket, F_SETFL, O_NONBLOCK)) {
120                            std::cerr << "LSCPServer: F_SETFL O_NONBLOCK failed." << std::endl;
121                            exit(EXIT_FAILURE);
122                    }
123    
124                    hSessions.push_back(socket);
125                    FD_SET(socket, &fdSet);
126                    if (socket > maxSessions)
127                            maxSessions = socket;
128                    dmsg(1,("LSCPServer: Client connection established on socket:%d.\n", socket));
129                    LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_misc, "Client connection established on socket", socket));
130                    continue; //Maybe this was the only selected socket, better select again
131            }
132    
133            //Something was selected and it was not the hSocket, so it must be some command(s) coming.
134            for (std::vector<int>::iterator iter = hSessions.begin(); iter !=  hSessions.end(); iter++) {
135                    if (FD_ISSET(*iter, &selectSet)) {      //Was it this socket?
136                            if (GetLSCPCommand(iter)) {     //Have we read the entire command?
137                                    dmsg(3,("LSCPServer: Got command on socket %d, calling parser.\n", currentSocket));
138                                    yylex_init(&yyparse_param.pScanner);
139                                    currentSocket = *iter;  //a hack
140                                    int result = yyparse(&yyparse_param);
141                                    currentSocket = -1;     //continuation of a hack
142                                    dmsg(3,("LSCPServer: Done parsing on socket %d.\n", currentSocket));
143                                    if (result == LSCP_QUIT) { //Was it a quit command by any chance?
144                                            CloseConnection(iter);
145                                    }
146                            }
147                            //socket may have been closed, iter may be invalid, get out of the loop for now.
148                            //we'll be back if there is data.
149                            break;
150                    }
151            }
152    
153            //Now let's deliver late notifies (if any)
154            NotifyBufferMutex.Lock();
155            for (std::map<int,String>::iterator iterNotify = bufferedNotifies.begin(); iterNotify != bufferedNotifies.end(); iterNotify++) {
156                    send(iterNotify->first, iterNotify->second.c_str(), iterNotify->second.size(), 0);
157                    bufferedNotifies.erase(iterNotify);
158            }
159            NotifyBufferMutex.Unlock();
160      }      }
161        //It will never get here anyway
162        //yylex_destroy(yyparse_param.pScanner);
163    }
164    
165    void LSCPServer::CloseConnection( std::vector<int>::iterator iter ) {
166            int socket = *iter;
167            dmsg(1,("LSCPServer: Client connection terminated on socket:%d.\n",socket));
168            LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_misc, "Client connection terminated on socket", socket));
169            hSessions.erase(iter);
170            FD_CLR(socket,  &fdSet);
171            SubscriptionMutex.Lock(); //Must unsubscribe this socket from all events (if any)
172            for (std::map< LSCPEvent::event_t, std::list<int> >::iterator iter = eventSubscriptions.begin(); iter != eventSubscriptions.end(); iter++) {
173                    iter->second.remove(socket);
174            }
175            SubscriptionMutex.Unlock();
176            NotifyMutex.Lock();
177            bufferedCommands.erase(socket);
178            bufferedNotifies.erase(socket);
179            close(socket);
180            NotifyMutex.Unlock();
181    }
182    
183    void LSCPServer::SendLSCPNotify( LSCPEvent event ) {
184            SubscriptionMutex.Lock();
185            if (eventSubscriptions.count(event.GetType()) == 0) {
186                    SubscriptionMutex.Unlock();     //Nobody is subscribed to this event
187                    return;
188            }
189            std::list<int>::iterator iter = eventSubscriptions[event.GetType()].begin();
190            std::list<int>::iterator end = eventSubscriptions[event.GetType()].end();
191            String notify = event.Produce();
192    
193            while (true) {
194                    if (NotifyMutex.Trylock()) {
195                            for(;iter != end; iter++)
196                                    send(*iter, notify.c_str(), notify.size(), 0);
197                            NotifyMutex.Unlock();
198                            break;
199                    } else {
200                            if (NotifyBufferMutex.Trylock()) {
201                                    for(;iter != end; iter++)
202                                            bufferedNotifies[*iter] += notify;
203                                    NotifyBufferMutex.Unlock();
204                                    break;
205                            }
206                    }
207            }
208            SubscriptionMutex.Unlock();
209    }
210    
211    extern int GetLSCPCommand( void *buf, int max_size ) {
212            String command = LSCPServer::bufferedCommands[LSCPServer::currentSocket];
213            if (command.size() == 0) {              //Parser wants input but we have nothing.
214                    strcpy((char*) buf, "\n");      //So give it an empty command
215                    return 1;                       //to keep it happy.
216            }
217    
218            if (max_size < command.size()) {
219                    std::cerr << "getLSCPCommand: Flex buffer too small, ignoring the command." << std::endl;
220                    return 0;       //This will never happen
221            }
222    
223            strcpy((char*) buf, command.c_str());
224            LSCPServer::bufferedCommands.erase(LSCPServer::currentSocket);
225            return command.size();
226    }
227    
228    /**
229     * Will be called to try to read the command from the socket
230     * If command is read, it will return true. Otherwise false is returned.
231     * In any case the received portion (complete or incomplete) is saved into bufferedCommand map.
232     */
233    bool LSCPServer::GetLSCPCommand( std::vector<int>::iterator iter ) {
234            int socket = *iter;
235            char c;
236            int i = 0;
237            while (true) {
238                    int result = recv(socket, (void *)&c, 1, 0); //Read one character at a time for now
239                    if (result == 0) { //socket was selected, so 0 here means client has closed the connection
240                            CloseConnection(iter);
241                            break;
242                    }
243                    if (result == 1) {
244                            if (c == '\r')
245                                    continue; //Ignore CR
246                            if (c == '\n') {
247                                    LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_misc, "Received \'" + bufferedCommands[socket] + "\' on socket", socket));
248                                    bufferedCommands[socket] += "\n";
249                                    return true; //Complete command was read
250                            }
251                            bufferedCommands[socket] += c;
252                    }
253                    if (result == -1) {
254                            if (errno == EAGAIN) //Would block, try again later.
255                                    return false;
256                            switch(errno) {
257                                    case EBADF:
258                                            dmsg(2,("LSCPScanner: The argument s is an invalid descriptor.\n"));
259                                            break;
260                                    case ECONNREFUSED:
261                                            dmsg(2,("LSCPScanner: A remote host refused to allow the network connection (typically because it is not running the requested service).\n"));
262                                            break;
263                                    case ENOTCONN:
264                                            dmsg(2,("LSCPScanner: The socket is associated with a connection-oriented protocol and has not been connected (see connect(2) and accept(2)).\n"));
265                                            break;
266                                    case ENOTSOCK:
267                                            dmsg(2,("LSCPScanner: The argument s does not refer to a socket.\n"));
268                                            break;
269                                    case EAGAIN:
270                                            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"));
271                                            break;
272                                    case EINTR:
273                                            dmsg(2,("LSCPScanner: The receive was interrupted by delivery of a signal before any data were available.\n"));
274                                            break;
275                                    case EFAULT:
276                                            dmsg(2,("LSCPScanner: The receive buffer pointer(s) point outside the process's address space.\n"));
277                                            break;
278                                    case EINVAL:
279                                            dmsg(2,("LSCPScanner: Invalid argument passed.\n"));
280                                            break;
281                                    case ENOMEM:
282                                            dmsg(2,("LSCPScanner: Could not allocate memory for recvmsg.\n"));
283                                            break;
284                                    default:
285                                            dmsg(2,("LSCPScanner: Unknown recv() error.\n"));
286                                            break;
287                            }
288                            CloseConnection(iter);
289                            break;
290                    }
291            }
292            return false;
293  }  }
294    
295  /**  /**
# Line 80  int LSCPServer::Main() { Line 300  int LSCPServer::Main() {
300   */   */
301  void LSCPServer::AnswerClient(String ReturnMessage) {  void LSCPServer::AnswerClient(String ReturnMessage) {
302      dmsg(2,("LSCPServer::AnswerClient(ReturnMessage=%s)", ReturnMessage.c_str()));      dmsg(2,("LSCPServer::AnswerClient(ReturnMessage=%s)", ReturnMessage.c_str()));
303      send(hSession, ReturnMessage.c_str(), ReturnMessage.size(), 0);      if (currentSocket != -1) {
304                NotifyMutex.Lock();
305                send(currentSocket, ReturnMessage.c_str(), ReturnMessage.size(), 0);
306                NotifyMutex.Unlock();
307        }
308    }
309    
310    /**
311     * Find a created audio output device index.
312     */
313    int LSCPServer::GetAudioOutputDeviceIndex ( AudioOutputDevice *pDevice )
314    {
315        // Search for the created device to get its index
316        std::map<uint, AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
317        std::map<uint, AudioOutputDevice*>::iterator iter = devices.begin();
318        for (; iter != devices.end(); iter++) {
319            if (iter->second == pDevice)
320                return iter->first;
321        }
322        // Not found.
323        return -1;
324    }
325    
326    /**
327     * Find a created midi input device index.
328     */
329    int LSCPServer::GetMidiInputDeviceIndex ( MidiInputDevice *pDevice )
330    {
331        // Search for the created device to get its index
332        std::map<uint, MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
333        std::map<uint, MidiInputDevice*>::iterator iter = devices.begin();
334        for (; iter != devices.end(); iter++) {
335            if (iter->second == pDevice)
336                return iter->first;
337        }
338        // Not found.
339        return -1;
340    }
341    
342    String LSCPServer::CreateAudioOutputDevice(String Driver, std::map<String,String> Parameters) {
343        dmsg(2,("LSCPServer: CreateAudioOutputDevice(Driver=%s)\n", Driver.c_str()));
344        LSCPResultSet result;
345        try {
346            AudioOutputDevice* pDevice = pSampler->CreateAudioOutputDevice(Driver, Parameters);
347            // search for the created device to get its index
348            int index = GetAudioOutputDeviceIndex(pDevice);
349            if (index == -1) throw LinuxSamplerException("Internal error: could not find created audio output device.");
350            result = index; // success
351        }
352        catch (LinuxSamplerException e) {
353            result.Error(e);
354        }
355        return result.Produce();
356    }
357    
358    String LSCPServer::CreateMidiInputDevice(String Driver, std::map<String,String> Parameters) {
359        dmsg(2,("LSCPServer: CreateMidiInputDevice(Driver=%s)\n", Driver.c_str()));
360        LSCPResultSet result;
361        try {
362            MidiInputDevice* pDevice = pSampler->CreateMidiInputDevice(Driver, Parameters);
363            // search for the created device to get its index
364            int index = GetMidiInputDeviceIndex(pDevice);
365            if (index == -1) throw LinuxSamplerException("Internal error: could not find created midi input device.");
366            result = index; // success
367        }
368        catch (LinuxSamplerException e) {
369            result.Error(e);
370        }
371        return result.Produce();
372    }
373    
374    String LSCPServer::DestroyAudioOutputDevice(uint DeviceIndex) {
375        dmsg(2,("LSCPServer: DestroyAudioOutputDevice(DeviceIndex=%d)\n", DeviceIndex));
376        LSCPResultSet result;
377        try {
378            std::map<uint, AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
379            if (!devices[DeviceIndex]) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceIndex) + ".");
380            AudioOutputDevice* pDevice = devices[DeviceIndex];
381            pSampler->DestroyAudioOutputDevice(pDevice);
382        }
383        catch (LinuxSamplerException e) {
384            result.Error(e);
385        }
386        return result.Produce();
387    }
388    
389    String LSCPServer::DestroyMidiInputDevice(uint DeviceIndex) {
390        dmsg(2,("LSCPServer: DestroyMidiInputDevice(DeviceIndex=%d)\n", DeviceIndex));
391        LSCPResultSet result;
392        try {
393            std::map<uint, MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
394            MidiInputDevice* pDevice = devices[DeviceIndex];
395            if (!pDevice) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceIndex) + ".");
396            pSampler->DestroyMidiInputDevice(pDevice);
397        }
398        catch (LinuxSamplerException e) {
399            result.Error(e);
400        }
401        return result.Produce();
402  }  }
403    
404  /**  /**
405   * Will be called by the parser to load an instrument.   * Will be called by the parser to load an instrument.
406   */   */
407  String LSCPServer::LoadInstrument(String Filename, uint Instrument, uint SamplerChannel) {  String LSCPServer::LoadInstrument(String Filename, uint uiInstrument, uint uiSamplerChannel, bool bBackground) {
408      dmsg(2,("LSCPServer: LoadInstrument(Filename=%s,Instrument=%d,SamplerChannel=%d)\n", Filename.c_str(), Instrument, SamplerChannel));      dmsg(2,("LSCPServer: LoadInstrument(Filename=%s,Instrument=%d,SamplerChannel=%d)\n", Filename.c_str(), uiInstrument, uiSamplerChannel));
409      result_t res = pEngine->LoadInstrument(Filename.c_str(), Instrument);      LSCPResultSet result;
410      return ConvertResult(res);      try {
411            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
412            if (!pSamplerChannel) throw LinuxSamplerException("Index out of bounds");
413            Engine* pEngine = pSamplerChannel->GetEngine();
414            if (!pEngine) throw LinuxSamplerException("No engine loaded on channel");
415            if (pSamplerChannel->GetAudioOutputDevice() == NULL)
416                throw LinuxSamplerException("No audio output device on channel");
417            if (bBackground) {
418                LSCPLoadInstrument *pLoadInstrument = new LSCPLoadInstrument(pEngine, Filename.c_str(), uiInstrument);
419                pLoadInstrument->StartThread();
420            }
421            else pEngine->LoadInstrument(Filename.c_str(), uiInstrument);
422        }
423        catch (LinuxSamplerException e) {
424             result.Error(e);
425        }
426        return result.Produce();
427  }  }
428    
429  /**  /**
430   * Will be called by the parser to load and deploy an engine.   * Will be called by the parser to load and deploy an engine.
431   */   */
432  String LSCPServer::LoadEngine(String EngineName, uint SamplerChannel) {  String LSCPServer::LoadEngine(String EngineName, uint uiSamplerChannel) {
433      dmsg(2,("LSCPServer: LoadEngine(EngineName=%s,SamplerChannel=%d)\n", EngineName.c_str(), SamplerChannel));      dmsg(2,("LSCPServer: LoadEngine(EngineName=%s,SamplerChannel=%d)\n", EngineName.c_str(), uiSamplerChannel));
434      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result;
435        try {
436            Engine::type_t type;
437            if ((EngineName == "GigEngine") || (EngineName == "gig")) type = Engine::type_gig;
438            else throw LinuxSamplerException("Unknown engine type");
439            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
440            if (!pSamplerChannel) throw LinuxSamplerException("Index out of bounds");
441            pSamplerChannel->LoadEngine(type);
442        }
443        catch (LinuxSamplerException e) {
444             result.Error(e);
445        }
446        return result.Produce();
447  }  }
448    
449  /**  /**
# Line 105  String LSCPServer::LoadEngine(String Eng Line 451  String LSCPServer::LoadEngine(String Eng
451   */   */
452  String LSCPServer::GetChannels() {  String LSCPServer::GetChannels() {
453      dmsg(2,("LSCPServer: GetChannels()\n"));      dmsg(2,("LSCPServer: GetChannels()\n"));
454      return "1\r\n";      LSCPResultSet result;
455        result.Add(pSampler->SamplerChannels());
456        return result.Produce();
457  }  }
458    
459  /**  /**
# Line 113  String LSCPServer::GetChannels() { Line 461  String LSCPServer::GetChannels() {
461   */   */
462  String LSCPServer::AddChannel() {  String LSCPServer::AddChannel() {
463      dmsg(2,("LSCPServer: AddChannel()\n"));      dmsg(2,("LSCPServer: AddChannel()\n"));
464      return "ERR:0:Not implemented yet.\r\n";      SamplerChannel* pSamplerChannel = pSampler->AddSamplerChannel();
465        LSCPResultSet result(pSamplerChannel->Index());
466        return result.Produce();
467  }  }
468    
469  /**  /**
470   * Will be called by the parser to remove a sampler channel.   * Will be called by the parser to remove a sampler channel.
471   */   */
472  String LSCPServer::RemoveChannel(uint SamplerChannel) {  String LSCPServer::RemoveChannel(uint uiSamplerChannel) {
473      dmsg(2,("LSCPServer: RemoveChannel(SamplerChannel=%d)\n", SamplerChannel));      dmsg(2,("LSCPServer: RemoveChannel(SamplerChannel=%d)\n", uiSamplerChannel));
474      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result;
475        pSampler->RemoveSamplerChannel(uiSamplerChannel);
476        return result.Produce();
477  }  }
478    
479  /**  /**
# Line 129  String LSCPServer::RemoveChannel(uint Sa Line 481  String LSCPServer::RemoveChannel(uint Sa
481   */   */
482  String LSCPServer::GetAvailableEngines() {  String LSCPServer::GetAvailableEngines() {
483      dmsg(2,("LSCPServer: GetAvailableEngines()\n"));      dmsg(2,("LSCPServer: GetAvailableEngines()\n"));
484      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result("GigEngine");
485        return result.Produce();
486  }  }
487    
488  /**  /**
# Line 137  String LSCPServer::GetAvailableEngines() Line 490  String LSCPServer::GetAvailableEngines()
490   */   */
491  String LSCPServer::GetEngineInfo(String EngineName) {  String LSCPServer::GetEngineInfo(String EngineName) {
492      dmsg(2,("LSCPServer: GetEngineInfo(EngineName=%s)\n", EngineName.c_str()));      dmsg(2,("LSCPServer: GetEngineInfo(EngineName=%s)\n", EngineName.c_str()));
493      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result;
494        try {
495            if ((EngineName == "GigEngine") || (EngineName == "gig")) {
496                Engine* pEngine = new LinuxSampler::gig::Engine;
497                result.Add(pEngine->Description());
498                result.Add(pEngine->Version());
499                delete pEngine;
500            }
501            else throw LinuxSamplerException("Unknown engine type");
502        }
503        catch (LinuxSamplerException e) {
504             result.Error(e);
505        }
506        return result.Produce();
507  }  }
508    
509  /**  /**
510   * Will be called by the parser to get informations about a particular   * Will be called by the parser to get informations about a particular
511   * sampler channel.   * sampler channel.
512   */   */
513  String LSCPServer::GetChannelInfo(uint SamplerChannel) {  String LSCPServer::GetChannelInfo(uint uiSamplerChannel) {
514      dmsg(2,("LSCPServer: GetChannelInfo(SamplerChannel=%d)\n", SamplerChannel));      dmsg(2,("LSCPServer: GetChannelInfo(SamplerChannel=%d)\n", uiSamplerChannel));
515      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result;
516        try {
517            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
518            if (!pSamplerChannel) throw LinuxSamplerException("Index out of bounds");
519            Engine* pEngine = pSamplerChannel->GetEngine();
520    
521            //Defaults values
522            String EngineName = "NONE";
523            float Volume = 0;
524            String InstrumentFileName = "NONE";
525            int InstrumentIndex = -1;
526            int InstrumentStatus = -1;
527    
528            if (pEngine) {
529                EngineName =  pEngine->EngineName();
530                Volume = pEngine->Volume();
531                InstrumentStatus = pEngine->InstrumentStatus();
532                InstrumentIndex = pEngine->InstrumentIndex();
533                if (InstrumentIndex != -1)
534                    InstrumentFileName = pEngine->InstrumentFileName();
535            }
536    
537            result.Add("ENGINE_NAME", EngineName);
538            result.Add("VOLUME", Volume);
539    
540            //Some not-so-hardcoded stuff to make GUI look good
541            result.Add("AUDIO_OUTPUT_DEVICE", GetAudioOutputDeviceIndex(pSamplerChannel->GetAudioOutputDevice()));
542            result.Add("AUDIO_OUTPUT_CHANNELS", "2");
543            result.Add("AUDIO_OUTPUT_ROUTING", "0,1");
544    
545            result.Add("MIDI_INPUT_DEVICE", GetMidiInputDeviceIndex(pSamplerChannel->GetMidiInputDevice()));
546            result.Add("MIDI_INPUT_PORT", pSamplerChannel->GetMidiInputPort());
547            result.Add("MIDI_INPUT_CHANNEL", pSamplerChannel->GetMidiInputChannel());
548    
549            result.Add("INSTRUMENT_FILE", InstrumentFileName);
550            result.Add("INSTRUMENT_NR", InstrumentIndex);
551            result.Add("INSTRUMENT_STATUS", InstrumentStatus);
552        }
553        catch (LinuxSamplerException e) {
554             result.Error(e);
555        }
556        return result.Produce();
557  }  }
558    
559  /**  /**
560   * Will be called by the parser to get the amount of active voices on a   * Will be called by the parser to get the amount of active voices on a
561   * particular sampler channel.   * particular sampler channel.
562   */   */
563  String LSCPServer::GetVoiceCount(uint SamplerChannel) {  String LSCPServer::GetVoiceCount(uint uiSamplerChannel) {
564      dmsg(2,("LSCPServer: GetVoiceCount(SamplerChannel=%d)\n", SamplerChannel));      dmsg(2,("LSCPServer: GetVoiceCount(SamplerChannel=%d)\n", uiSamplerChannel));
565      return ToString(pEngine->ActiveVoiceCount) + "\r\n";      LSCPResultSet result;
566        try {
567            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
568            if (!pSamplerChannel) throw LinuxSamplerException("Index out of bounds");
569            Engine* pEngine = pSamplerChannel->GetEngine();
570            if (!pEngine) throw LinuxSamplerException("No engine loaded on channel");
571            result.Add(pEngine->VoiceCount());
572        }
573        catch (LinuxSamplerException e) {
574             result.Error(e);
575        }
576        return result.Produce();
577  }  }
578    
579  /**  /**
580   * Will be called by the parser to get the amount of active disk streams on a   * Will be called by the parser to get the amount of active disk streams on a
581   * particular sampler channel.   * particular sampler channel.
582   */   */
583  String LSCPServer::GetStreamCount(uint SamplerChannel) {  String LSCPServer::GetStreamCount(uint uiSamplerChannel) {
584      dmsg(2,("LSCPServer: GetStreamCount(SamplerChannel=%d)\n", SamplerChannel));      dmsg(2,("LSCPServer: GetStreamCount(SamplerChannel=%d)\n", uiSamplerChannel));
585      return ToString(pEngine->pDiskThread->ActiveStreamCount) + "\r\n";      LSCPResultSet result;
586        try {
587            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
588            if (!pSamplerChannel) throw LinuxSamplerException("Index out of bounds");
589            Engine* pEngine = pSamplerChannel->GetEngine();
590            if (!pEngine) throw LinuxSamplerException("No engine loaded on channel");
591            result.Add(pEngine->DiskStreamCount());
592        }
593        catch (LinuxSamplerException e) {
594             result.Error(e);
595        }
596        return result.Produce();
597  }  }
598    
599  /**  /**
600   * Will be called by the parser to get the buffer fill states of all disk   * Will be called by the parser to get the buffer fill states of all disk
601   * streams on a particular sampler channel.   * streams on a particular sampler channel.
602   */   */
603  String LSCPServer::GetBufferFill(fill_response_t ResponseType, uint SamplerChannel) {  String LSCPServer::GetBufferFill(fill_response_t ResponseType, uint uiSamplerChannel) {
604      dmsg(2,("LSCPServer: GetBufferFill(ResponseType=%d, SamplerChannel=%d)\n", ResponseType, SamplerChannel));      dmsg(2,("LSCPServer: GetBufferFill(ResponseType=%d, SamplerChannel=%d)\n", ResponseType, uiSamplerChannel));
605      return (ResponseType == fill_response_bytes) ? pEngine->pDiskThread->GetBufferFillBytes() + "\r\n"      LSCPResultSet result;
606                                                   : pEngine->pDiskThread->GetBufferFillPercentage() + "\r\n";      try {
607            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
608            if (!pSamplerChannel) throw LinuxSamplerException("Index out of bounds");
609            Engine* pEngine = pSamplerChannel->GetEngine();
610            if (!pEngine) throw LinuxSamplerException("No engine loaded on channel");
611            if (!pEngine->DiskStreamSupported())
612                result.Add("NA");
613            else {
614                switch (ResponseType) {
615                    case fill_response_bytes:
616                        result.Add(pEngine->DiskStreamBufferFillBytes());
617                        break;
618                    case fill_response_percentage:
619                        result.Add(pEngine->DiskStreamBufferFillPercentage());
620                        break;
621                    default:
622                        throw LinuxSamplerException("Unknown fill response type");
623                }
624            }
625        }
626        catch (LinuxSamplerException e) {
627             result.Error(e);
628        }
629        return result.Produce();
630  }  }
631    
632  /**  String LSCPServer::GetAvailableAudioOutputDrivers() {
633   * Will be called by the parser to change the audio output type on a      dmsg(2,("LSCPServer: GetAvailableAudioOutputDrivers()\n"));
634   * particular sampler channel.      LSCPResultSet result;
635   */      try {
636  String LSCPServer::SetAudioOutputType(audio_output_type_t AudioOutputType, uint SamplerChannel) {          String s = AudioOutputDeviceFactory::AvailableDriversAsString();
637      dmsg(2,("LSCPServer: SetAudioOutputType(AudioOutputType=%d, SamplerChannel=%d)\n", AudioOutputType, SamplerChannel));          result.Add(s);
638      return "ERR:0:Not implemented yet.\r\n";      }
639        catch (LinuxSamplerException e) {
640            result.Error(e);
641        }
642        return result.Produce();
643    }
644    
645    String LSCPServer::GetAvailableMidiInputDrivers() {
646        dmsg(2,("LSCPServer: GetAvailableMidiInputDrivers()\n"));
647        LSCPResultSet result;
648        try {
649            String s = MidiInputDeviceFactory::AvailableDriversAsString();
650            result.Add(s);
651        }
652        catch (LinuxSamplerException e) {
653            result.Error(e);
654        }
655        return result.Produce();
656    }
657    
658    String LSCPServer::GetMidiInputDriverInfo(String Driver) {
659        dmsg(2,("LSCPServer: GetMidiInputDriverInfo(Driver=%s)\n",Driver.c_str()));
660        LSCPResultSet result;
661        try {
662            result.Add("DESCRIPTION", MidiInputDeviceFactory::GetDriverDescription(Driver));
663            result.Add("VERSION",     MidiInputDeviceFactory::GetDriverVersion(Driver));
664    
665            std::map<String,DeviceCreationParameter*> parameters = MidiInputDeviceFactory::GetAvailableDriverParameters(Driver);
666            if (parameters.size()) { // if there are parameters defined for this driver
667                String s;
668                std::map<String,DeviceCreationParameter*>::iterator iter = parameters.begin();
669                for (;iter != parameters.end(); iter++) {
670                    if (s != "") s += ",";
671                    s += iter->first;
672                }
673                result.Add("PARAMETERS", s);
674            }
675        }
676        catch (LinuxSamplerException e) {
677            result.Error(e);
678        }
679        return result.Produce();
680    }
681    
682    String LSCPServer::GetAudioOutputDriverInfo(String Driver) {
683        dmsg(2,("LSCPServer: GetAudioOutputDriverInfo(Driver=%s)\n",Driver.c_str()));
684        LSCPResultSet result;
685        try {
686            result.Add("DESCRIPTION", AudioOutputDeviceFactory::GetDriverDescription(Driver));
687            result.Add("VERSION",     AudioOutputDeviceFactory::GetDriverVersion(Driver));
688    
689            std::map<String,DeviceCreationParameter*> parameters = AudioOutputDeviceFactory::GetAvailableDriverParameters(Driver);
690            if (parameters.size()) { // if there are parameters defined for this driver
691                String s;
692                std::map<String,DeviceCreationParameter*>::iterator iter = parameters.begin();
693                for (;iter != parameters.end(); iter++) {
694                    if (s != "") s += ",";
695                    s += iter->first;
696                }
697                result.Add("PARAMETERS", s);
698            }
699        }
700        catch (LinuxSamplerException e) {
701            result.Error(e);
702        }
703        return result.Produce();
704    }
705    
706    String LSCPServer::GetMidiInputDriverParameterInfo(String Driver, String Parameter, std::map<String,String> DependencyList) {
707        dmsg(2,("LSCPServer: GetMidiInputDriverParameterInfo(Driver=%s,Parameter=%s)\n",Driver.c_str(),Parameter.c_str()));
708        LSCPResultSet result;
709        try {
710            DeviceCreationParameter* pParameter = MidiInputDeviceFactory::GetDriverParameter(Driver, Parameter);
711            result.Add("TYPE",         pParameter->Type());
712            result.Add("DESCRIPTION",  pParameter->Description());
713            result.Add("MANDATORY",    pParameter->Mandatory());
714            result.Add("FIX",          pParameter->Fix());
715            result.Add("MULTIPLICITY", pParameter->Multiplicity());
716            if (pParameter->Depends())       result.Add("DEPENDS",       pParameter->Depends());
717            if (pParameter->Default())       result.Add("DEFAULT",       pParameter->Default());
718            if (pParameter->RangeMin())      result.Add("RANGE_MIN",     pParameter->RangeMin());
719            if (pParameter->RangeMax())      result.Add("RANGE_MAX",     pParameter->RangeMax());
720            if (pParameter->Possibilities()) result.Add("POSSIBILITIES", pParameter->Possibilities());
721        }
722        catch (LinuxSamplerException e) {
723            result.Error(e);
724        }
725        return result.Produce();
726    }
727    
728    String LSCPServer::GetAudioOutputDriverParameterInfo(String Driver, String Parameter, std::map<String,String> DependencyList) {
729        dmsg(2,("LSCPServer: GetAudioOutputDriverParameterInfo(Driver=%s,Parameter=%s)\n",Driver.c_str(),Parameter.c_str()));
730        LSCPResultSet result;
731        try {
732            DeviceCreationParameter* pParameter = AudioOutputDeviceFactory::GetDriverParameter(Driver, Parameter);
733            result.Add("TYPE",         pParameter->Type());
734            result.Add("DESCRIPTION",  pParameter->Description());
735            result.Add("MANDATORY",    pParameter->Mandatory());
736            result.Add("FIX",          pParameter->Fix());
737            result.Add("MULTIPLICITY", pParameter->Multiplicity());
738            if (pParameter->Depends())       result.Add("DEPENDS",       pParameter->Depends());
739            if (pParameter->Default())       result.Add("DEFAULT",       pParameter->Default());
740            if (pParameter->RangeMin())      result.Add("RANGE_MIN",     pParameter->RangeMin());
741            if (pParameter->RangeMax())      result.Add("RANGE_MAX",     pParameter->RangeMax());
742            if (pParameter->Possibilities()) result.Add("POSSIBILITIES", pParameter->Possibilities());
743        }
744        catch (LinuxSamplerException e) {
745            result.Error(e);
746        }
747        return result.Produce();
748    }
749    
750    String LSCPServer::GetAudioOutputDeviceCount() {
751        dmsg(2,("LSCPServer: GetAudioOutputDeviceCount()\n"));
752        LSCPResultSet result;
753        try {
754            uint count = pSampler->AudioOutputDevices();
755            result.Add(count); // success
756        }
757        catch (LinuxSamplerException e) {
758            result.Error(e);
759        }
760        return result.Produce();
761    }
762    
763    String LSCPServer::GetMidiInputDeviceCount() {
764        dmsg(2,("LSCPServer: GetMidiInputDeviceCount()\n"));
765        LSCPResultSet result;
766        try {
767            uint count = pSampler->MidiInputDevices();
768            result.Add(count); // success
769        }
770        catch (LinuxSamplerException e) {
771            result.Error(e);
772        }
773        return result.Produce();
774    }
775    
776    String LSCPServer::GetAudioOutputDevices() {
777        dmsg(2,("LSCPServer: GetAudioOutputDevices()\n"));
778        LSCPResultSet result;
779        try {
780            String s;
781            std::map<uint, AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
782            std::map<uint, AudioOutputDevice*>::iterator iter = devices.begin();
783            for (; iter != devices.end(); iter++) {
784                if (s != "") s += ",";
785                s += ToString(iter->first);
786            }
787            result.Add(s);
788        }
789        catch (LinuxSamplerException e) {
790            result.Error(e);
791        }
792        return result.Produce();
793    }
794    
795    String LSCPServer::GetMidiInputDevices() {
796        dmsg(2,("LSCPServer: GetMidiInputDevices()\n"));
797        LSCPResultSet result;
798        try {
799            String s;
800            std::map<uint, MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
801            std::map<uint, MidiInputDevice*>::iterator iter = devices.begin();
802            for (; iter != devices.end(); iter++) {
803                if (s != "") s += ",";
804                s += ToString(iter->first);
805            }
806            result.Add(s);
807        }
808        catch (LinuxSamplerException e) {
809            result.Error(e);
810        }
811        return result.Produce();
812    }
813    
814    String LSCPServer::GetAudioOutputDeviceInfo(uint DeviceIndex) {
815        dmsg(2,("LSCPServer: GetAudioOutputDeviceInfo(DeviceIndex=%d)\n",DeviceIndex));
816        LSCPResultSet result;
817        try {
818            std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
819            if (!devices[DeviceIndex]) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceIndex) + ".");
820            AudioOutputDevice* pDevice = devices[DeviceIndex];
821            result.Add("driver", pDevice->Driver());
822            std::map<String,DeviceCreationParameter*> parameters = pDevice->DeviceParameters();
823            std::map<String,DeviceCreationParameter*>::iterator iter = parameters.begin();
824            for (; iter != parameters.end(); iter++) {
825                result.Add(iter->first, iter->second->Value());
826            }
827        }
828        catch (LinuxSamplerException e) {
829            result.Error(e);
830        }
831        return result.Produce();
832    }
833    
834    String LSCPServer::GetMidiInputDeviceInfo(uint DeviceIndex) {
835        dmsg(2,("LSCPServer: GetMidiInputDeviceInfo(DeviceIndex=%d)\n",DeviceIndex));
836        LSCPResultSet result;
837        try {
838            std::map<uint,MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
839            MidiInputDevice* pDevice = devices[DeviceIndex];
840            if (!pDevice) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(DeviceIndex) + ".");
841            result.Add("driver", pDevice->Driver());
842            std::map<String,DeviceCreationParameter*> parameters = pDevice->DeviceParameters();
843            std::map<String,DeviceCreationParameter*>::iterator iter = parameters.begin();
844            for (; iter != parameters.end(); iter++) {
845                result.Add(iter->first, iter->second->Value());
846            }
847        }
848        catch (LinuxSamplerException e) {
849            result.Error(e);
850        }
851        return result.Produce();
852    }
853    String LSCPServer::GetMidiInputPortInfo(uint DeviceIndex, uint PortIndex) {
854        dmsg(2,("LSCPServer: GetMidiInputPortInfo(DeviceIndex=%d, PortIndex=%d)\n",DeviceIndex, PortIndex));
855        LSCPResultSet result;
856        try {
857            std::map<uint,MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
858            MidiInputDevice* pDevice = devices[DeviceIndex];
859            if (!pDevice) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(DeviceIndex) + ".");
860            MidiInputDevice::MidiInputPort* pMidiInputPort = pDevice->GetPort(PortIndex);
861            if (!pMidiInputPort) throw LinuxSamplerException("There is no MIDI input port with index " + ToString(PortIndex) + ".");
862            std::map<String,DeviceCreationParameter*> parameters = pMidiInputPort->DeviceParameters();
863            std::map<String,DeviceCreationParameter*>::iterator iter = parameters.begin();
864            for (; iter != parameters.end(); iter++) {
865                result.Add(iter->first, iter->second->Value());
866            }
867        }
868        catch (LinuxSamplerException e) {
869            result.Error(e);
870        }
871        return result.Produce();
872    }
873    
874    String LSCPServer::GetAudioOutputChannelInfo(uint DeviceId, uint ChannelId) {
875        dmsg(2,("LSCPServer: GetAudioOutputChannelInfo(DeviceId=%d,ChannelId)\n",DeviceId,ChannelId));
876        LSCPResultSet result;
877        try {
878            // get audio output device
879            std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
880            if (!devices[DeviceId]) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceId) + ".");
881            AudioOutputDevice* pDevice = devices[DeviceId];
882    
883            // get audio channel
884            AudioChannel* pChannel = pDevice->Channel(ChannelId);
885            if (!pChannel) throw LinuxSamplerException("Audio ouotput device does not have channel " + ToString(ChannelId) + ".");
886    
887            // return the values of all audio channel parameters
888            std::map<String,DeviceRuntimeParameter*> parameters = pChannel->ChannelParameters();
889            std::map<String,DeviceRuntimeParameter*>::iterator iter = parameters.begin();
890            for (; iter != parameters.end(); iter++) {
891                result.Add(iter->first, iter->second->Value());
892            }
893        }
894        catch (LinuxSamplerException e) {
895            result.Error(e);
896        }
897        return result.Produce();
898    }
899    
900    String LSCPServer::GetAudioOutputChannelParameterInfo(uint DeviceId, uint ChannelId, String ParameterName) {
901        dmsg(2,("LSCPServer: GetAudioOutputChannelParameterInfo(DeviceId=%d,ChannelId=%d,ParameterName=%s)\n",DeviceId,ChannelId,ParameterName.c_str()));
902        LSCPResultSet result;
903        try {
904            // get audio output device
905            std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
906            if (!devices[DeviceId]) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceId) + ".");
907            AudioOutputDevice* pDevice = devices[DeviceId];
908    
909            // get audio channel
910            AudioChannel* pChannel = pDevice->Channel(ChannelId);
911            if (!pChannel) throw LinuxSamplerException("Audio output device does not have channel " + ToString(ChannelId) + ".");
912    
913            // get desired audio channel parameter
914            std::map<String,DeviceRuntimeParameter*> parameters = pChannel->ChannelParameters();
915            if (!parameters[ParameterName]) throw LinuxSamplerException("Audio channel does not provide a parameter '" + ParameterName + "'.");
916            DeviceRuntimeParameter* pParameter = parameters[ParameterName];
917    
918            // return all fields of this audio channel parameter
919            result.Add("TYPE",         pParameter->Type());
920            result.Add("DESCRIPTION",  pParameter->Description());
921            result.Add("FIX",          pParameter->Fix());
922            result.Add("MULTIPLICITY", pParameter->Multiplicity());
923            if (pParameter->RangeMin())      result.Add("RANGE_MIN",     pParameter->RangeMin());
924            if (pParameter->RangeMax())      result.Add("RANGE_MAX",     pParameter->RangeMax());
925            if (pParameter->Possibilities()) result.Add("POSSIBILITIES", pParameter->Possibilities());
926        }
927        catch (LinuxSamplerException e) {
928            result.Error(e);
929        }
930        return result.Produce();
931    }
932    
933    String LSCPServer::SetAudioOutputChannelParameter(uint DeviceId, uint ChannelId, String ParamKey, String ParamVal) {
934        dmsg(2,("LSCPServer: SetAudioOutputChannelParameter(DeviceId=%d,ChannelId=%d,ParamKey=%s,ParamVal=%s)\n",DeviceId,ChannelId,ParamKey.c_str(),ParamVal.c_str()));
935        LSCPResultSet result;
936        try {
937            // get audio output device
938            std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
939            if (!devices[DeviceId]) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceId) + ".");
940            AudioOutputDevice* pDevice = devices[DeviceId];
941    
942            // get audio channel
943            AudioChannel* pChannel = pDevice->Channel(ChannelId);
944            if (!pChannel) throw LinuxSamplerException("Audio output device does not have channel " + ToString(ChannelId) + ".");
945    
946            // get desired audio channel parameter
947            std::map<String,DeviceRuntimeParameter*> parameters = pChannel->ChannelParameters();
948            if (!parameters[ParamKey]) throw LinuxSamplerException("Audio channel does not provide a parameter '" + ParamKey + "'.");
949            DeviceRuntimeParameter* pParameter = parameters[ParamKey];
950    
951            // set new channel parameter value
952            pParameter->SetValue(ParamVal);
953        }
954        catch (LinuxSamplerException e) {
955            result.Error(e);
956        }
957        return result.Produce();
958    }
959    
960    String LSCPServer::SetAudioOutputDeviceParameter(uint DeviceIndex, String ParamKey, String ParamVal) {
961        dmsg(2,("LSCPServer: SetAudioOutputDeviceParameter(DeviceIndex=%d,ParamKey=%s,ParamVal=%s)\n",DeviceIndex,ParamKey.c_str(),ParamVal.c_str()));
962        LSCPResultSet result;
963        try {
964            std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
965            if (!devices[DeviceIndex]) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceIndex) + ".");
966            AudioOutputDevice* pDevice = devices[DeviceIndex];
967            std::map<String,DeviceCreationParameter*> parameters = pDevice->DeviceParameters();
968            if (!parameters[ParamKey]) throw LinuxSamplerException("Audio output device " + ToString(DeviceIndex) + " does not have a device parameter '" + ParamKey + "'");
969            parameters[ParamKey]->SetValue(ParamVal);
970        }
971        catch (LinuxSamplerException e) {
972            result.Error(e);
973        }
974        return result.Produce();
975    }
976    
977    String LSCPServer::SetMidiInputDeviceParameter(uint DeviceIndex, String ParamKey, String ParamVal) {
978        dmsg(2,("LSCPServer: SetMidiOutputDeviceParameter(DeviceIndex=%d,ParamKey=%s,ParamVal=%s)\n",DeviceIndex,ParamKey.c_str(),ParamVal.c_str()));
979        LSCPResultSet result;
980        try {
981            std::map<uint,MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
982            if (!devices[DeviceIndex]) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(DeviceIndex) + ".");
983            MidiInputDevice* pDevice = devices[DeviceIndex];
984            std::map<String,DeviceCreationParameter*> parameters = pDevice->DeviceParameters();
985            if (!parameters[ParamKey]) throw LinuxSamplerException("MIDI input device " + ToString(DeviceIndex) + " does not have a device parameter '" + ParamKey + "'");
986            parameters[ParamKey]->SetValue(ParamVal);
987        }
988        catch (LinuxSamplerException e) {
989            result.Error(e);
990        }
991        return result.Produce();
992    }
993    
994    String LSCPServer::SetMidiInputPortParameter(uint DeviceIndex, uint PortIndex, String ParamKey, String ParamVal) {
995        dmsg(2,("LSCPServer: SetMidiOutputDeviceParameter(DeviceIndex=%d,ParamKey=%s,ParamVal=%s)\n",DeviceIndex,ParamKey.c_str(),ParamVal.c_str()));
996        LSCPResultSet result;
997        try {
998            std::map<uint,MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
999            MidiInputDevice* pDevice = devices[DeviceIndex];
1000            if (!pDevice) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(DeviceIndex) + ".");
1001            MidiInputDevice::MidiInputPort* pMidiInputPort = pDevice->GetPort(PortIndex);
1002            if (!pMidiInputPort) throw LinuxSamplerException("There is no MIDI input port with index " + ToString(PortIndex) + ".");
1003            std::map<String,DeviceCreationParameter*> parameters = pMidiInputPort->DeviceParameters();
1004            if (!parameters[ParamKey]) throw LinuxSamplerException("MIDI input device " + ToString(PortIndex) + " does not have a parameter '" + ParamKey + "'");
1005            parameters[ParamKey]->SetValue(ParamVal);
1006        }
1007        catch (LinuxSamplerException e) {
1008            result.Error(e);
1009        }
1010        return result.Produce();
1011  }  }
1012    
1013  /**  /**
1014   * Will be called by the parser to change the audio output channel for   * Will be called by the parser to change the audio output channel for
1015   * playback on a particular sampler channel.   * playback on a particular sampler channel.
1016   */   */
1017  String LSCPServer::SetAudioOutputChannel(uint AudioOutputChannel, uint SamplerChannel) {  String LSCPServer::SetAudioOutputChannel(uint ChannelAudioOutputChannel, uint AudioOutputDeviceInputChannel, uint uiSamplerChannel) {
1018      dmsg(2,("LSCPServer: SetAudioOutputChannel(AudioOutputChannel=%d, SamplerChannel=%d)\n", AudioOutputChannel, SamplerChannel));      dmsg(2,("LSCPServer: SetAudioOutputChannel(ChannelAudioOutputChannel=%d, AudioOutputDeviceInputChannel=%d, SamplerChannel=%d)\n",ChannelAudioOutputChannel,AudioOutputDeviceInputChannel,uiSamplerChannel));
1019      return "ERR:0:Not implemented yet.\r\n";      return "ERR:0:Not implemented yet.\r\n"; //FIXME: Add support for this in resultset class?
1020  }  }
1021    
1022  /**  String LSCPServer::SetAudioOutputDevice(uint AudioDeviceId, uint uiSamplerChannel) {
1023   * Will be called by the parser to change the MIDI input port on which the      dmsg(2,("LSCPServer: SetAudiotOutputDevice(AudioDeviceId=%d, SamplerChannel=%d)\n",AudioDeviceId,uiSamplerChannel));
1024   * engine of a particular sampler channel should listen to.      LSCPResultSet result;
1025   */      try {
1026  String LSCPServer::SetMIDIInputPort(String MIDIInputPort, uint Samplerchannel) {          SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1027      dmsg(2,("LSCPServer: SetMIDIInputPort(MIDIInputPort=%s, Samplerchannel=%d)\n", MIDIInputPort.c_str(), Samplerchannel));          if (!pSamplerChannel) throw LinuxSamplerException("Invalid channel number " + ToString(uiSamplerChannel));
1028      return "ERR:0:Not implemented yet.\r\n";          std::map<uint, AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
1029            AudioOutputDevice* pDevice = devices[AudioDeviceId];
1030            if (!pDevice) throw LinuxSamplerException("There is no audio output device with index " + ToString(AudioDeviceId));
1031            pSamplerChannel->SetAudioOutputDevice(pDevice);
1032        }
1033        catch (LinuxSamplerException e) {
1034             result.Error(e);
1035        }
1036        return result.Produce();
1037    }
1038    
1039    String LSCPServer::SetAudioOutputType(String AudioOutputDriver, uint uiSamplerChannel) {
1040        dmsg(2,("LSCPServer: SetAudioOutputType(String AudioOutputDriver=%s, SamplerChannel=%d)\n",AudioOutputDriver.c_str(),uiSamplerChannel));
1041        LSCPResultSet result;
1042        try {
1043            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1044            if (!pSamplerChannel) throw LinuxSamplerException("Invalid channel number " + ToString(uiSamplerChannel));
1045            // Driver type name aliasing...
1046            if (AudioOutputDriver == "ALSA") AudioOutputDriver = "Alsa";
1047            if (AudioOutputDriver == "JACK") AudioOutputDriver = "Jack";        
1048            // Check if there's one audio output device already created
1049            // for the intended audio driver type (AudioOutputDriver)...
1050            AudioOutputDevice *pDevice = NULL;
1051            std::map<uint, AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
1052            std::map<uint, AudioOutputDevice*>::iterator iter = devices.begin();
1053            for (; iter != devices.end(); iter++) {
1054                if ((iter->second)->Driver() == AudioOutputDriver) {
1055                    pDevice = iter->second;
1056                    break;
1057                }
1058            }
1059            // If it doesn't exist, create a new one with default parameters...
1060            if (pDevice == NULL) {
1061                std::map<String,String> params;
1062                pDevice = pSampler->CreateAudioOutputDevice(AudioOutputDriver, params);
1063            }
1064            // Must have a device...
1065            if (pDevice == NULL)
1066                throw LinuxSamplerException("Internal error: could not create audio output device.");
1067            // Set it as the current channel device...
1068            pSamplerChannel->SetAudioOutputDevice(pDevice);
1069        }
1070        catch (LinuxSamplerException e) {
1071             result.Error(e);
1072        }
1073        return result.Produce();
1074    }
1075    
1076    String LSCPServer::SetMIDIInputPort(uint MIDIPort, uint uiSamplerChannel) {
1077        dmsg(2,("LSCPServer: SetMIDIInputPort(MIDIPort=%d, SamplerChannel=%d)\n",MIDIPort,uiSamplerChannel));
1078        LSCPResultSet result;
1079        try {
1080            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1081            if (!pSamplerChannel) throw LinuxSamplerException("Invalid channel number " + ToString(uiSamplerChannel));
1082            pSamplerChannel->SetMidiInputPort(MIDIPort);
1083        }
1084        catch (LinuxSamplerException e) {
1085             result.Error(e);
1086        }
1087        return result.Produce();
1088    }
1089    
1090    String LSCPServer::SetMIDIInputChannel(uint MIDIChannel, uint uiSamplerChannel) {
1091        dmsg(2,("LSCPServer: SetMIDIInputChannel(MIDIChannel=%d, SamplerChannel=%d)\n",MIDIChannel,uiSamplerChannel));
1092        LSCPResultSet result;
1093        try {
1094            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1095            if (!pSamplerChannel) throw LinuxSamplerException("Invalid channel number " + ToString(uiSamplerChannel));
1096            pSamplerChannel->SetMidiInputChannel((MidiInputDevice::MidiInputPort::midi_chan_t) MIDIChannel);
1097        }
1098        catch (LinuxSamplerException e) {
1099             result.Error(e);
1100        }
1101        return result.Produce();
1102    }
1103    
1104    String LSCPServer::SetMIDIInputDevice(uint MIDIDeviceId, uint uiSamplerChannel) {
1105        dmsg(2,("LSCPServer: SetMIDIInputDevice(MIDIDeviceId=%d, SamplerChannel=%d)\n",MIDIDeviceId,uiSamplerChannel));
1106        LSCPResultSet result;
1107        try {
1108            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1109            if (!pSamplerChannel) throw LinuxSamplerException("Invalid channel number " + ToString(uiSamplerChannel));
1110            std::map<uint, MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
1111            MidiInputDevice* pDevice = devices[MIDIDeviceId];
1112            if (!pDevice) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(MIDIDeviceId));
1113            pSamplerChannel->SetMidiInputDevice(pDevice);
1114        }
1115        catch (LinuxSamplerException e) {
1116             result.Error(e);
1117        }
1118        return result.Produce();
1119    }
1120    
1121    String LSCPServer::SetMIDIInputType(String MidiInputDriver, uint uiSamplerChannel) {
1122        dmsg(2,("LSCPServer: SetMIDIInputType(String MidiInputDriver=%s, SamplerChannel=%d)\n",MidiInputDriver.c_str(),uiSamplerChannel));
1123        LSCPResultSet result;
1124        try {
1125            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1126            if (!pSamplerChannel) throw LinuxSamplerException("Invalid channel number " + ToString(uiSamplerChannel));
1127            // Driver type name aliasing...
1128            if (MidiInputDriver == "ALSA") MidiInputDriver = "Alsa";
1129            // Check if there's one MIDI input device already created
1130            // for the intended MIDI driver type (MidiInputDriver)...
1131            MidiInputDevice *pDevice = NULL;
1132            std::map<uint, MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
1133            std::map<uint, MidiInputDevice*>::iterator iter = devices.begin();
1134            for (; iter != devices.end(); iter++) {
1135                if ((iter->second)->Driver() == MidiInputDriver) {
1136                    pDevice = iter->second;
1137                    break;
1138                }
1139            }
1140            // If it doesn't exist, create a new one with default parameters...
1141            if (pDevice == NULL) {
1142                std::map<String,String> params;
1143                pDevice = pSampler->CreateMidiInputDevice(MidiInputDriver, params);
1144                // Make it with at least one initial port.
1145                std::map<String,DeviceCreationParameter*> parameters = pDevice->DeviceParameters();
1146                parameters["ports"]->SetValue("1");
1147            }
1148            // Must have a device...
1149            if (pDevice == NULL)
1150                throw LinuxSamplerException("Internal error: could not create MIDI input device.");
1151            // Set it as the current channel device...
1152            pSamplerChannel->SetMidiInputDevice(pDevice);
1153        }
1154        catch (LinuxSamplerException e) {
1155             result.Error(e);
1156        }
1157        return result.Produce();
1158  }  }
1159    
1160  /**  /**
1161   * Will be called by the parser to change the MIDI input channel on which the   * Will be called by the parser to change the MIDI input device, port and channel on which
1162   * engine of a particular sampler channel should listen to.   * engine of a particular sampler channel should listen to.
1163   */   */
1164  String LSCPServer::SetMIDIInputChannel(uint MIDIChannel, uint SamplerChannel) {  String LSCPServer::SetMIDIInput(uint MIDIDeviceId, uint MIDIPort, uint MIDIChannel, uint uiSamplerChannel) {
1165      dmsg(2,("LSCPServer: SetMIDIInputChannel(MIDIChannel=%d, SamplerChannel=%d)\n", MIDIChannel, SamplerChannel));      dmsg(2,("LSCPServer: SetMIDIInput(MIDIDeviceId=%d, MIDIPort=%d, MIDIChannel=%d, SamplerChannel=%d)\n", MIDIDeviceId, MIDIPort, MIDIChannel, uiSamplerChannel));
1166      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result;
1167        try {
1168            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1169            if (!pSamplerChannel) throw LinuxSamplerException("Invalid channel number " + ToString(uiSamplerChannel));
1170            std::map<uint, MidiInputDevice*> devices =  pSampler->GetMidiInputDevices();
1171            MidiInputDevice* pDevice = devices[MIDIDeviceId];
1172            if (!pDevice) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(MIDIDeviceId));
1173            pSamplerChannel->SetMidiInput(pDevice, MIDIPort, (MidiInputDevice::MidiInputPort::midi_chan_t) MIDIChannel);
1174        }
1175        catch (LinuxSamplerException e) {
1176             result.Error(e);
1177        }
1178        return result.Produce();
1179  }  }
1180    
1181  /**  /**
1182   * Will be called by the parser to change the global volume factor on a   * Will be called by the parser to change the global volume factor on a
1183   * particular sampler channel.   * particular sampler channel.
1184   */   */
1185  String LSCPServer::SetVolume(double Volume, uint SamplerChannel) {  String LSCPServer::SetVolume(double Volume, uint uiSamplerChannel) {
1186      dmsg(2,("LSCPServer: SetVolume(Volume=%f, SamplerChannel=%d)\n", Volume, SamplerChannel));      dmsg(2,("LSCPServer: SetVolume(Volume=%f, SamplerChannel=%d)\n", Volume, uiSamplerChannel));
1187      pEngine->Volume = Volume;      LSCPResultSet result;
1188      return "OK\r\n";      try {
1189            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1190            if (!pSamplerChannel) throw LinuxSamplerException("Index out of bounds");
1191            Engine* pEngine = pSamplerChannel->GetEngine();
1192            if (!pEngine) throw LinuxSamplerException("No engine loaded on channel");
1193            pEngine->Volume(Volume);
1194        }
1195        catch (LinuxSamplerException e) {
1196             result.Error(e);
1197        }
1198        return result.Produce();
1199  }  }
1200    
1201  /**  /**
1202   * Will be called by the parser to reset a particular sampler channel.   * Will be called by the parser to reset a particular sampler channel.
1203   */   */
1204  String LSCPServer::ResetChannel(uint SamplerChannel) {  String LSCPServer::ResetChannel(uint uiSamplerChannel) {
1205      dmsg(2,("LSCPServer: ResetChannel(SamplerChannel=%d)\n", SamplerChannel));      dmsg(2,("LSCPServer: ResetChannel(SamplerChannel=%d)\n", uiSamplerChannel));
1206      pEngine->Reset();      LSCPResultSet result;
1207      return "OK\r\n";      try {
1208            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1209            if (!pSamplerChannel) throw LinuxSamplerException("Index out of bounds");
1210            Engine* pEngine = pSamplerChannel->GetEngine();
1211            if (!pEngine) throw LinuxSamplerException("No engine loaded on channel");
1212            pEngine->Reset();
1213        }
1214        catch (LinuxSamplerException e) {
1215             result.Error(e);
1216        }
1217        return result.Produce();
1218  }  }
1219    
1220  /**  /**
1221   * 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
1222   * server for receiving event messages.   * server for receiving event messages.
1223   */   */
1224  String LSCPServer::SubscribeNotification(uint UDPPort) {  String LSCPServer::SubscribeNotification(LSCPEvent::event_t type) {
1225      dmsg(2,("LSCPServer: SubscribeNotification(UDPPort=%d)\n", UDPPort));      dmsg(2,("LSCPServer: SubscribeNotification(Event=%s)\n", LSCPEvent::Name(type).c_str()));
1226      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result;
1227        SubscriptionMutex.Lock();
1228        eventSubscriptions[type].push_back(currentSocket);
1229        SubscriptionMutex.Unlock();
1230        return result.Produce();
1231  }  }
1232    
1233  /**  /**
1234   * Will be called by the parser to unsubscribe a client on the server   * Will be called by the parser to unsubscribe a client on the server
1235   * for not receiving further event messages.   * for not receiving further event messages.
1236   */   */
1237  String LSCPServer::UnsubscribeNotification(String SessionID) {  String LSCPServer::UnsubscribeNotification(LSCPEvent::event_t type) {
1238      dmsg(2,("LSCPServer: UnsubscribeNotification(SessionID=%s)\n", SessionID.c_str()));      dmsg(2,("LSCPServer: UnsubscribeNotification(Event=%s)\n", LSCPEvent::Name(type).c_str()));
1239      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result;
1240        SubscriptionMutex.Lock();
1241        eventSubscriptions[type].remove(currentSocket);
1242        SubscriptionMutex.Unlock();
1243        return result.Produce();
1244    }
1245    
1246    
1247    // Instrument loader constructor.
1248    LSCPLoadInstrument::LSCPLoadInstrument(Engine* pEngine, String Filename, uint uiInstrument)
1249        : Thread(false, 0, -4)
1250    {
1251        this->pEngine = pEngine;
1252        this->Filename = Filename;
1253        this->uiInstrument = uiInstrument;
1254    }
1255    
1256    // Instrument loader process.
1257    int LSCPLoadInstrument::Main()
1258    {
1259        try {
1260            pEngine->LoadInstrument(Filename.c_str(), uiInstrument);
1261        }
1262    
1263        catch (LinuxSamplerException e) {
1264            e.PrintMessage();
1265        }
1266    
1267        // Always re-enable the engine.
1268        pEngine->Enable();
1269    
1270        // FIXME: Shoot ourselves on the foot?
1271        delete this;
1272  }  }

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