/[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 376 by senkov, Sat Feb 12 23:48:50 2005 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 "../drivers/audio/AudioOutputDeviceFactory.h"
29    #include "../drivers/midi/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<yyparse_param_t> LSCPServer::Sessions = std::vector<yyparse_param_t>();
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    Mutex LSCPServer::RTNotifyMutex = Mutex();
54    
55    LSCPServer::LSCPServer(Sampler* pSampler) : Thread(false, 0, -4) {
56        this->pSampler = pSampler;
57        LSCPEvent::RegisterEvent(LSCPEvent::event_channels, "CHANNELS");
58        LSCPEvent::RegisterEvent(LSCPEvent::event_voice_count, "VOICE_COUNT");
59        LSCPEvent::RegisterEvent(LSCPEvent::event_stream_count, "STREAM_COUNT");
60        LSCPEvent::RegisterEvent(LSCPEvent::event_buffer_fill, "BUFFER_FILL");
61        LSCPEvent::RegisterEvent(LSCPEvent::event_info, "INFO");
62        LSCPEvent::RegisterEvent(LSCPEvent::event_misc, "MISCELLANEOUS");
63    }
64    
65    /**
66     * Blocks the calling thread until the LSCP Server is initialized and
67     * accepting socket connections, if the server is already initialized then
68     * this method will return immediately.
69     * @param TimeoutSeconds     - optional: max. wait time in seconds
70     *                             (default: 0s)
71     * @param TimeoutNanoSeconds - optional: max wait time in nano seconds
72     *                             (default: 0ns)
73     * @returns  0 on success, a value less than 0 if timeout exceeded
74     */
75    int LSCPServer::WaitUntilInitialized(long TimeoutSeconds, long TimeoutNanoSeconds) {
76        return Initialized.WaitAndUnlockIf(false, TimeoutSeconds, TimeoutNanoSeconds);
77  }  }
78    
79  int LSCPServer::Main() {  int LSCPServer::Main() {
80      hSocket = socket(AF_INET, SOCK_STREAM, 0);      int hSocket = socket(AF_INET, SOCK_STREAM, 0);
81      if (hSocket < 0) {      if (hSocket < 0) {
82          std::cerr << "LSCPServer: Could not create server socket." << std::endl;          std::cerr << "LSCPServer: Could not create server socket." << std::endl;
83          return -1;          //return -1;
84            exit(EXIT_FAILURE);
85      }      }
86    
87      SocketAddress.sin_family      = AF_INET;      SocketAddress.sin_family      = AF_INET;
# Line 38  int LSCPServer::Main() { Line 89  int LSCPServer::Main() {
89      SocketAddress.sin_addr.s_addr = htonl(INADDR_ANY);      SocketAddress.sin_addr.s_addr = htonl(INADDR_ANY);
90    
91      if (bind(hSocket, (sockaddr*) &SocketAddress, sizeof(sockaddr_in)) < 0) {      if (bind(hSocket, (sockaddr*) &SocketAddress, sizeof(sockaddr_in)) < 0) {
92          std::cerr << "LSCPServer: Could not bind server socket." << std::endl;          std::cerr << "LSCPServer: Could not bind server socket, retrying for " << ToString(LSCP_SERVER_BIND_TIMEOUT) << " seconds...";
93          close(hSocket);          for (int trial = 0; true; trial++) { // retry for LSCP_SERVER_BIND_TIMEOUT seconds
94          return -1;              if (bind(hSocket, (sockaddr*) &SocketAddress, sizeof(sockaddr_in)) < 0) {
95                    if (trial > LSCP_SERVER_BIND_TIMEOUT) {
96                        std::cerr << "gave up!" << std::endl;
97                        close(hSocket);
98                        //return -1;
99                        exit(EXIT_FAILURE);
100                    }
101                    else sleep(1); // sleep 1s
102                }
103                else break; // success
104            }
105      }      }
106    
107      listen(hSocket, 1);      listen(hSocket, 1);
108      dmsg(1,("LSCPServer: Server running.\n")); // server running      Initialized.Set(true);
109    
110      // now wait for client connections and handle their requests      // now wait for client connections and handle their requests
111      sockaddr_in client;      sockaddr_in client;
112      int length = sizeof(client);      int length = sizeof(client);
113      while (true) {      FD_ZERO(&fdSet);
114          hSession = accept(hSocket, (sockaddr*) &client, (socklen_t*) &length);      FD_SET(hSocket, &fdSet);
115          if (hSession < 0) {      int maxSessions = hSocket;
             std::cerr << "LSCPServer: Client connection failed." << std::endl;  
             close(hSocket);  
             return -1;  
         }  
   
         dmsg(1,("LSCPServer: Client connection established.\n"));  
         //send(hSession, "Welcome!\r\n", 10, 0);  
   
         // 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);  
116    
117          close(hSession);      while (true) {
118          dmsg(1,("LSCPServer: Client connection terminated.\n"));          fd_set selectSet = fdSet;
119            int retval = select(maxSessions+1, &selectSet, NULL, NULL, NULL);
120            if (retval == 0)
121                    continue; //Nothing try again
122            if (retval == -1) {
123                    std::cerr << "LSCPServer: Socket select error." << std::endl;
124                    close(hSocket);
125                    exit(EXIT_FAILURE);
126            }
127    
128            //Accept new connections now (if any)
129            if (FD_ISSET(hSocket, &selectSet)) {
130                    int socket = accept(hSocket, (sockaddr*) &client, (socklen_t*) &length);
131                    if (socket < 0) {
132                            std::cerr << "LSCPServer: Client connection failed." << std::endl;
133                            exit(EXIT_FAILURE);
134                    }
135    
136                    if (fcntl(socket, F_SETFL, O_NONBLOCK)) {
137                            std::cerr << "LSCPServer: F_SETFL O_NONBLOCK failed." << std::endl;
138                            exit(EXIT_FAILURE);
139                    }
140    
141                    // Parser initialization
142                    yyparse_param_t yyparse_param;
143                    yyparse_param.pServer  = this;
144                    yyparse_param.hSession = socket;
145    
146                    Sessions.push_back(yyparse_param);
147                    FD_SET(socket, &fdSet);
148                    if (socket > maxSessions)
149                            maxSessions = socket;
150                    dmsg(1,("LSCPServer: Client connection established on socket:%d.\n", socket));
151                    LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_misc, "Client connection established on socket", socket));
152                    continue; //Maybe this was the only selected socket, better select again
153            }
154    
155            //Something was selected and it was not the hSocket, so it must be some command(s) coming.
156            for (std::vector<yyparse_param_t>::iterator iter = Sessions.begin(); iter != Sessions.end(); iter++) {
157                    if (FD_ISSET((*iter).hSession, &selectSet)) {   //Was it this socket?
158                            if (GetLSCPCommand(iter)) {     //Have we read the entire command?
159                                    dmsg(3,("LSCPServer: Got command on socket %d, calling parser.\n", currentSocket));
160                                    int dummy; // just a temporary hack to fulfill the restart() function prototype
161                                    restart(NULL, dummy); // restart the 'scanner'
162                                    currentSocket = (*iter).hSession;  //a hack
163                                    if ((*iter).bVerbose) { // if echo mode enabled
164                                        AnswerClient(bufferedCommands[currentSocket]);
165                                    }
166                                    int result = yyparse(&(*iter));
167                                    currentSocket = -1;     //continuation of a hack
168                                    dmsg(3,("LSCPServer: Done parsing on socket %d.\n", currentSocket));
169                                    if (result == LSCP_QUIT) { //Was it a quit command by any chance?
170                                            CloseConnection(iter);
171                                    }
172                            }
173                            //socket may have been closed, iter may be invalid, get out of the loop for now.
174                            //we'll be back if there is data.
175                            break;
176                    }
177            }
178    
179            //Now let's deliver late notifies (if any)
180            NotifyBufferMutex.Lock();
181            for (std::map<int,String>::iterator iterNotify = bufferedNotifies.begin(); iterNotify != bufferedNotifies.end(); iterNotify++) {
182                    send(iterNotify->first, iterNotify->second.c_str(), iterNotify->second.size(), 0);
183                    bufferedNotifies.erase(iterNotify);
184            }
185            NotifyBufferMutex.Unlock();
186      }      }
187  }  }
188    
189    void LSCPServer::CloseConnection( std::vector<yyparse_param_t>::iterator iter ) {
190            int socket = (*iter).hSession;
191            dmsg(1,("LSCPServer: Client connection terminated on socket:%d.\n",socket));
192            LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_misc, "Client connection terminated on socket", socket));
193            Sessions.erase(iter);
194            FD_CLR(socket,  &fdSet);
195            SubscriptionMutex.Lock(); //Must unsubscribe this socket from all events (if any)
196            for (std::map< LSCPEvent::event_t, std::list<int> >::iterator iter = eventSubscriptions.begin(); iter != eventSubscriptions.end(); iter++) {
197                    iter->second.remove(socket);
198            }
199            SubscriptionMutex.Unlock();
200            NotifyMutex.Lock();
201            bufferedCommands.erase(socket);
202            bufferedNotifies.erase(socket);
203            close(socket);
204            NotifyMutex.Unlock();
205    }
206    
207    int LSCPServer::EventSubscribers( std::list<LSCPEvent::event_t> events ) {
208            int subs = 0;
209            SubscriptionMutex.Lock();
210            for( std::list<LSCPEvent::event_t>::iterator iter = events.begin();
211                            iter != events.end(); iter++)
212            {
213                    subs += eventSubscriptions.count(*iter);
214            }
215            SubscriptionMutex.Unlock();
216            return subs;
217    }
218    
219    void LSCPServer::SendLSCPNotify( LSCPEvent event ) {
220            SubscriptionMutex.Lock();
221            if (eventSubscriptions.count(event.GetType()) == 0) {
222                    SubscriptionMutex.Unlock();     //Nobody is subscribed to this event
223                    return;
224            }
225            std::list<int>::iterator iter = eventSubscriptions[event.GetType()].begin();
226            std::list<int>::iterator end = eventSubscriptions[event.GetType()].end();
227            String notify = event.Produce();
228    
229            while (true) {
230                    if (NotifyMutex.Trylock()) {
231                            for(;iter != end; iter++)
232                                    send(*iter, notify.c_str(), notify.size(), 0);
233                            NotifyMutex.Unlock();
234                            break;
235                    } else {
236                            if (NotifyBufferMutex.Trylock()) {
237                                    for(;iter != end; iter++)
238                                            bufferedNotifies[*iter] += notify;
239                                    NotifyBufferMutex.Unlock();
240                                    break;
241                            }
242                    }
243            }
244            SubscriptionMutex.Unlock();
245    }
246    
247    extern int GetLSCPCommand( void *buf, int max_size ) {
248            String command = LSCPServer::bufferedCommands[LSCPServer::currentSocket];
249            if (command.size() == 0) {              //Parser wants input but we have nothing.
250                    strcpy((char*) buf, "\n");      //So give it an empty command
251                    return 1;                       //to keep it happy.
252            }
253    
254            if (max_size < command.size()) {
255                    std::cerr << "getLSCPCommand: Flex buffer too small, ignoring the command." << std::endl;
256                    return 0;       //This will never happen
257            }
258    
259            strcpy((char*) buf, command.c_str());
260            LSCPServer::bufferedCommands.erase(LSCPServer::currentSocket);
261            return command.size();
262    }
263    
264    /**
265     * Will be called to try to read the command from the socket
266     * If command is read, it will return true. Otherwise false is returned.
267     * In any case the received portion (complete or incomplete) is saved into bufferedCommand map.
268     */
269    bool LSCPServer::GetLSCPCommand( std::vector<yyparse_param_t>::iterator iter ) {
270            int socket = (*iter).hSession;
271            char c;
272            int i = 0;
273            while (true) {
274                    int result = recv(socket, (void *)&c, 1, 0); //Read one character at a time for now
275                    if (result == 0) { //socket was selected, so 0 here means client has closed the connection
276                            CloseConnection(iter);
277                            break;
278                    }
279                    if (result == 1) {
280                            if (c == '\r')
281                                    continue; //Ignore CR
282                            if (c == '\n') {
283                                    LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_misc, "Received \'" + bufferedCommands[socket] + "\' on socket", socket));
284                                    bufferedCommands[socket] += "\n";
285                                    return true; //Complete command was read
286                            }
287                            bufferedCommands[socket] += c;
288                    }
289                    if (result == -1) {
290                            if (errno == EAGAIN) //Would block, try again later.
291                                    return false;
292                            switch(errno) {
293                                    case EBADF:
294                                            dmsg(2,("LSCPScanner: The argument s is an invalid descriptor.\n"));
295                                            break;
296                                    case ECONNREFUSED:
297                                            dmsg(2,("LSCPScanner: A remote host refused to allow the network connection (typically because it is not running the requested service).\n"));
298                                            break;
299                                    case ENOTCONN:
300                                            dmsg(2,("LSCPScanner: The socket is associated with a connection-oriented protocol and has not been connected (see connect(2) and accept(2)).\n"));
301                                            break;
302                                    case ENOTSOCK:
303                                            dmsg(2,("LSCPScanner: The argument s does not refer to a socket.\n"));
304                                            break;
305                                    case EAGAIN:
306                                            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"));
307                                            break;
308                                    case EINTR:
309                                            dmsg(2,("LSCPScanner: The receive was interrupted by delivery of a signal before any data were available.\n"));
310                                            break;
311                                    case EFAULT:
312                                            dmsg(2,("LSCPScanner: The receive buffer pointer(s) point outside the process's address space.\n"));
313                                            break;
314                                    case EINVAL:
315                                            dmsg(2,("LSCPScanner: Invalid argument passed.\n"));
316                                            break;
317                                    case ENOMEM:
318                                            dmsg(2,("LSCPScanner: Could not allocate memory for recvmsg.\n"));
319                                            break;
320                                    default:
321                                            dmsg(2,("LSCPScanner: Unknown recv() error.\n"));
322                                            break;
323                            }
324                            CloseConnection(iter);
325                            break;
326                    }
327            }
328            return false;
329    }
330    
331  /**  /**
332   * Will be called by the parser whenever it wants to send an answer to the   * Will be called by the parser whenever it wants to send an answer to the
333   * client / frontend.   * client / frontend.
# Line 80  int LSCPServer::Main() { Line 336  int LSCPServer::Main() {
336   */   */
337  void LSCPServer::AnswerClient(String ReturnMessage) {  void LSCPServer::AnswerClient(String ReturnMessage) {
338      dmsg(2,("LSCPServer::AnswerClient(ReturnMessage=%s)", ReturnMessage.c_str()));      dmsg(2,("LSCPServer::AnswerClient(ReturnMessage=%s)", ReturnMessage.c_str()));
339      send(hSession, ReturnMessage.c_str(), ReturnMessage.size(), 0);      if (currentSocket != -1) {
340                NotifyMutex.Lock();
341                send(currentSocket, ReturnMessage.c_str(), ReturnMessage.size(), 0);
342                NotifyMutex.Unlock();
343        }
344    }
345    
346    /**
347     * Find a created audio output device index.
348     */
349    int LSCPServer::GetAudioOutputDeviceIndex ( AudioOutputDevice *pDevice )
350    {
351        // Search for the created device to get its index
352        std::map<uint, AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
353        std::map<uint, AudioOutputDevice*>::iterator iter = devices.begin();
354        for (; iter != devices.end(); iter++) {
355            if (iter->second == pDevice)
356                return iter->first;
357        }
358        // Not found.
359        return -1;
360    }
361    
362    /**
363     * Find a created midi input device index.
364     */
365    int LSCPServer::GetMidiInputDeviceIndex ( MidiInputDevice *pDevice )
366    {
367        // Search for the created device to get its index
368        std::map<uint, MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
369        std::map<uint, MidiInputDevice*>::iterator iter = devices.begin();
370        for (; iter != devices.end(); iter++) {
371            if (iter->second == pDevice)
372                return iter->first;
373        }
374        // Not found.
375        return -1;
376    }
377    
378    String LSCPServer::CreateAudioOutputDevice(String Driver, std::map<String,String> Parameters) {
379        dmsg(2,("LSCPServer: CreateAudioOutputDevice(Driver=%s)\n", Driver.c_str()));
380        LSCPResultSet result;
381        try {
382            AudioOutputDevice* pDevice = pSampler->CreateAudioOutputDevice(Driver, Parameters);
383            // search for the created device to get its index
384            int index = GetAudioOutputDeviceIndex(pDevice);
385            if (index == -1) throw LinuxSamplerException("Internal error: could not find created audio output device.");
386            result = index; // success
387        }
388        catch (LinuxSamplerException e) {
389            result.Error(e);
390        }
391        return result.Produce();
392    }
393    
394    String LSCPServer::CreateMidiInputDevice(String Driver, std::map<String,String> Parameters) {
395        dmsg(2,("LSCPServer: CreateMidiInputDevice(Driver=%s)\n", Driver.c_str()));
396        LSCPResultSet result;
397        try {
398            MidiInputDevice* pDevice = pSampler->CreateMidiInputDevice(Driver, Parameters);
399            // search for the created device to get its index
400            int index = GetMidiInputDeviceIndex(pDevice);
401            if (index == -1) throw LinuxSamplerException("Internal error: could not find created midi input device.");
402            result = index; // success
403        }
404        catch (LinuxSamplerException e) {
405            result.Error(e);
406        }
407        return result.Produce();
408    }
409    
410    String LSCPServer::DestroyAudioOutputDevice(uint DeviceIndex) {
411        dmsg(2,("LSCPServer: DestroyAudioOutputDevice(DeviceIndex=%d)\n", DeviceIndex));
412        LSCPResultSet result;
413        try {
414            std::map<uint, AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
415            if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceIndex) + ".");
416            AudioOutputDevice* pDevice = devices[DeviceIndex];
417            pSampler->DestroyAudioOutputDevice(pDevice);
418        }
419        catch (LinuxSamplerException e) {
420            result.Error(e);
421        }
422        return result.Produce();
423    }
424    
425    String LSCPServer::DestroyMidiInputDevice(uint DeviceIndex) {
426        dmsg(2,("LSCPServer: DestroyMidiInputDevice(DeviceIndex=%d)\n", DeviceIndex));
427        LSCPResultSet result;
428        try {
429            std::map<uint, MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
430            if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceIndex) + ".");
431            MidiInputDevice* pDevice = devices[DeviceIndex];
432            pSampler->DestroyMidiInputDevice(pDevice);
433        }
434        catch (LinuxSamplerException e) {
435            result.Error(e);
436        }
437        return result.Produce();
438  }  }
439    
440  /**  /**
441   * Will be called by the parser to load an instrument.   * Will be called by the parser to load an instrument.
442   */   */
443  String LSCPServer::LoadInstrument(String Filename, uint Instrument, uint SamplerChannel) {  String LSCPServer::LoadInstrument(String Filename, uint uiInstrument, uint uiSamplerChannel, bool bBackground) {
444      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));
445      result_t res = pEngine->LoadInstrument(Filename.c_str(), Instrument);      LSCPResultSet result;
446      return ConvertResult(res);      try {
447            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
448            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
449            Engine* pEngine = pSamplerChannel->GetEngine();
450            if (!pEngine) throw LinuxSamplerException("No engine loaded on sampler channel");
451            if (!pSamplerChannel->GetAudioOutputDevice())
452                throw LinuxSamplerException("No audio output device connected to sampler channel");
453            if (bBackground) {
454                LSCPLoadInstrument *pLoadInstrument = new LSCPLoadInstrument(pEngine, Filename.c_str(), uiInstrument);
455                pLoadInstrument->StartThread();
456            }
457            else pEngine->LoadInstrument(Filename.c_str(), uiInstrument);
458        }
459        catch (LinuxSamplerException e) {
460             result.Error(e);
461        }
462        return result.Produce();
463  }  }
464    
465  /**  /**
466   * Will be called by the parser to load and deploy an engine.   * Will be called by the parser to load and deploy an engine.
467   */   */
468  String LSCPServer::LoadEngine(String EngineName, uint SamplerChannel) {  String LSCPServer::LoadEngine(String EngineName, uint uiSamplerChannel) {
469      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));
470      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result;
471        try {
472            Engine::type_t type;
473            if ((EngineName == "GigEngine") || (EngineName == "gig")) type = Engine::type_gig;
474            else throw LinuxSamplerException("Unknown engine type");
475            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
476            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
477            LockRTNotify();
478            pSamplerChannel->LoadEngine(type);
479            UnlockRTNotify();
480        }
481        catch (LinuxSamplerException e) {
482             result.Error(e);
483        }
484        return result.Produce();
485  }  }
486    
487  /**  /**
# Line 105  String LSCPServer::LoadEngine(String Eng Line 489  String LSCPServer::LoadEngine(String Eng
489   */   */
490  String LSCPServer::GetChannels() {  String LSCPServer::GetChannels() {
491      dmsg(2,("LSCPServer: GetChannels()\n"));      dmsg(2,("LSCPServer: GetChannels()\n"));
492      return "1\r\n";      LSCPResultSet result;
493        result.Add(pSampler->SamplerChannels());
494        return result.Produce();
495    }
496    
497    /**
498     * Will be called by the parser to get the list of sampler channels.
499     */
500    String LSCPServer::ListChannels() {
501        dmsg(2,("LSCPServer: ListChannels()\n"));
502        String list;
503        std::map<uint,SamplerChannel*> channels = pSampler->GetSamplerChannels();
504        std::map<uint,SamplerChannel*>::iterator iter = channels.begin();
505        for (; iter != channels.end(); iter++) {
506            if (list != "") list += ",";
507            list += ToString(iter->first);
508        }
509        LSCPResultSet result;
510        result.Add(list);
511        return result.Produce();
512  }  }
513    
514  /**  /**
# Line 113  String LSCPServer::GetChannels() { Line 516  String LSCPServer::GetChannels() {
516   */   */
517  String LSCPServer::AddChannel() {  String LSCPServer::AddChannel() {
518      dmsg(2,("LSCPServer: AddChannel()\n"));      dmsg(2,("LSCPServer: AddChannel()\n"));
519      return "ERR:0:Not implemented yet.\r\n";      SamplerChannel* pSamplerChannel = pSampler->AddSamplerChannel();
520        LSCPResultSet result(pSamplerChannel->Index());
521        return result.Produce();
522  }  }
523    
524  /**  /**
525   * Will be called by the parser to remove a sampler channel.   * Will be called by the parser to remove a sampler channel.
526   */   */
527  String LSCPServer::RemoveChannel(uint SamplerChannel) {  String LSCPServer::RemoveChannel(uint uiSamplerChannel) {
528      dmsg(2,("LSCPServer: RemoveChannel(SamplerChannel=%d)\n", SamplerChannel));      dmsg(2,("LSCPServer: RemoveChannel(SamplerChannel=%d)\n", uiSamplerChannel));
529      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result;
530        LockRTNotify();
531        pSampler->RemoveSamplerChannel(uiSamplerChannel);
532        UnlockRTNotify();
533        return result.Produce();
534  }  }
535    
536  /**  /**
# Line 129  String LSCPServer::RemoveChannel(uint Sa Line 538  String LSCPServer::RemoveChannel(uint Sa
538   */   */
539  String LSCPServer::GetAvailableEngines() {  String LSCPServer::GetAvailableEngines() {
540      dmsg(2,("LSCPServer: GetAvailableEngines()\n"));      dmsg(2,("LSCPServer: GetAvailableEngines()\n"));
541      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result("GigEngine");
542        return result.Produce();
543  }  }
544    
545  /**  /**
# Line 137  String LSCPServer::GetAvailableEngines() Line 547  String LSCPServer::GetAvailableEngines()
547   */   */
548  String LSCPServer::GetEngineInfo(String EngineName) {  String LSCPServer::GetEngineInfo(String EngineName) {
549      dmsg(2,("LSCPServer: GetEngineInfo(EngineName=%s)\n", EngineName.c_str()));      dmsg(2,("LSCPServer: GetEngineInfo(EngineName=%s)\n", EngineName.c_str()));
550      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result;
551        try {
552            if ((EngineName == "GigEngine") || (EngineName == "gig")) {
553                Engine* pEngine = new LinuxSampler::gig::Engine;
554                result.Add("DESCRIPTION", pEngine->Description());
555                result.Add("VERSION",     pEngine->Version());
556                delete pEngine;
557            }
558            else throw LinuxSamplerException("Unknown engine type");
559        }
560        catch (LinuxSamplerException e) {
561             result.Error(e);
562        }
563        return result.Produce();
564  }  }
565    
566  /**  /**
567   * Will be called by the parser to get informations about a particular   * Will be called by the parser to get informations about a particular
568   * sampler channel.   * sampler channel.
569   */   */
570  String LSCPServer::GetChannelInfo(uint SamplerChannel) {  String LSCPServer::GetChannelInfo(uint uiSamplerChannel) {
571      dmsg(2,("LSCPServer: GetChannelInfo(SamplerChannel=%d)\n", SamplerChannel));      dmsg(2,("LSCPServer: GetChannelInfo(SamplerChannel=%d)\n", uiSamplerChannel));
572      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result;
573        try {
574            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
575            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
576            Engine* pEngine = pSamplerChannel->GetEngine();
577    
578            //Defaults values
579            String EngineName = "NONE";
580            float Volume = 0.0f;
581            String InstrumentFileName = "NONE";
582            String InstrumentName = "NONE";
583            int InstrumentIndex = -1;
584            int InstrumentStatus = -1;
585            int AudioOutputChannels = 0;
586            String AudioRouting;
587    
588            if (pEngine) {
589                EngineName =  pEngine->EngineName();
590                AudioOutputChannels = pEngine->Channels();
591                Volume = pEngine->Volume();
592                InstrumentStatus = pEngine->InstrumentStatus();
593                InstrumentIndex = pEngine->InstrumentIndex();
594                if (InstrumentIndex != -1)
595                {
596                    InstrumentFileName = pEngine->InstrumentFileName();
597                    InstrumentName = pEngine->InstrumentName();
598                }
599                for (int chan = 0; chan < pEngine->Channels(); chan++) {
600                    if (AudioRouting != "") AudioRouting += ",";
601                    AudioRouting += ToString(pEngine->OutputChannel(chan));
602                }
603            }
604    
605            result.Add("ENGINE_NAME", EngineName);
606            result.Add("VOLUME", Volume);
607    
608            //Some not-so-hardcoded stuff to make GUI look good
609            result.Add("AUDIO_OUTPUT_DEVICE", GetAudioOutputDeviceIndex(pSamplerChannel->GetAudioOutputDevice()));
610            result.Add("AUDIO_OUTPUT_CHANNELS", AudioOutputChannels);
611            result.Add("AUDIO_OUTPUT_ROUTING", AudioRouting);
612    
613            result.Add("MIDI_INPUT_DEVICE", GetMidiInputDeviceIndex(pSamplerChannel->GetMidiInputDevice()));
614            result.Add("MIDI_INPUT_PORT", pSamplerChannel->GetMidiInputPort());
615            if (pSamplerChannel->GetMidiInputChannel() == MidiInputPort::midi_chan_all) result.Add("MIDI_INPUT_CHANNEL", "ALL");
616            else result.Add("MIDI_INPUT_CHANNEL", pSamplerChannel->GetMidiInputChannel());
617    
618            result.Add("INSTRUMENT_FILE", InstrumentFileName);
619            result.Add("INSTRUMENT_NR", InstrumentIndex);
620            result.Add("INSTRUMENT_NAME", InstrumentName);
621            result.Add("INSTRUMENT_STATUS", InstrumentStatus);
622        }
623        catch (LinuxSamplerException e) {
624             result.Error(e);
625        }
626        return result.Produce();
627  }  }
628    
629  /**  /**
630   * 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
631   * particular sampler channel.   * particular sampler channel.
632   */   */
633  String LSCPServer::GetVoiceCount(uint SamplerChannel) {  String LSCPServer::GetVoiceCount(uint uiSamplerChannel) {
634      dmsg(2,("LSCPServer: GetVoiceCount(SamplerChannel=%d)\n", SamplerChannel));      dmsg(2,("LSCPServer: GetVoiceCount(SamplerChannel=%d)\n", uiSamplerChannel));
635      return ToString(pEngine->ActiveVoiceCount) + "\r\n";      LSCPResultSet result;
636        try {
637            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
638            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
639            Engine* pEngine = pSamplerChannel->GetEngine();
640            if (!pEngine) throw LinuxSamplerException("No engine loaded on sampler channel");
641            result.Add(pEngine->VoiceCount());
642        }
643        catch (LinuxSamplerException e) {
644             result.Error(e);
645        }
646        return result.Produce();
647  }  }
648    
649  /**  /**
650   * 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
651   * particular sampler channel.   * particular sampler channel.
652   */   */
653  String LSCPServer::GetStreamCount(uint SamplerChannel) {  String LSCPServer::GetStreamCount(uint uiSamplerChannel) {
654      dmsg(2,("LSCPServer: GetStreamCount(SamplerChannel=%d)\n", SamplerChannel));      dmsg(2,("LSCPServer: GetStreamCount(SamplerChannel=%d)\n", uiSamplerChannel));
655      return ToString(pEngine->pDiskThread->ActiveStreamCount) + "\r\n";      LSCPResultSet result;
656        try {
657            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
658            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
659            Engine* pEngine = pSamplerChannel->GetEngine();
660            if (!pEngine) throw LinuxSamplerException("No engine loaded on sampler channel");
661            result.Add(pEngine->DiskStreamCount());
662        }
663        catch (LinuxSamplerException e) {
664             result.Error(e);
665        }
666        return result.Produce();
667  }  }
668    
669  /**  /**
670   * 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
671   * streams on a particular sampler channel.   * streams on a particular sampler channel.
672   */   */
673  String LSCPServer::GetBufferFill(fill_response_t ResponseType, uint SamplerChannel) {  String LSCPServer::GetBufferFill(fill_response_t ResponseType, uint uiSamplerChannel) {
674      dmsg(2,("LSCPServer: GetBufferFill(ResponseType=%d, SamplerChannel=%d)\n", ResponseType, SamplerChannel));      dmsg(2,("LSCPServer: GetBufferFill(ResponseType=%d, SamplerChannel=%d)\n", ResponseType, uiSamplerChannel));
675      return (ResponseType == fill_response_bytes) ? pEngine->pDiskThread->GetBufferFillBytes() + "\r\n"      LSCPResultSet result;
676                                                   : pEngine->pDiskThread->GetBufferFillPercentage() + "\r\n";      try {
677            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
678            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
679            Engine* pEngine = pSamplerChannel->GetEngine();
680            if (!pEngine) throw LinuxSamplerException("No engine loaded on sampler channel");
681            if (!pEngine->DiskStreamSupported())
682                result.Add("NA");
683            else {
684                switch (ResponseType) {
685                    case fill_response_bytes:
686                        result.Add(pEngine->DiskStreamBufferFillBytes());
687                        break;
688                    case fill_response_percentage:
689                        result.Add(pEngine->DiskStreamBufferFillPercentage());
690                        break;
691                    default:
692                        throw LinuxSamplerException("Unknown fill response type");
693                }
694            }
695        }
696        catch (LinuxSamplerException e) {
697             result.Error(e);
698        }
699        return result.Produce();
700  }  }
701    
702  /**  String LSCPServer::GetAvailableAudioOutputDrivers() {
703   * Will be called by the parser to change the audio output type on a      dmsg(2,("LSCPServer: GetAvailableAudioOutputDrivers()\n"));
704   * particular sampler channel.      LSCPResultSet result;
705   */      try {
706  String LSCPServer::SetAudioOutputType(audio_output_type_t AudioOutputType, uint SamplerChannel) {          String s = AudioOutputDeviceFactory::AvailableDriversAsString();
707      dmsg(2,("LSCPServer: SetAudioOutputType(AudioOutputType=%d, SamplerChannel=%d)\n", AudioOutputType, SamplerChannel));          result.Add(s);
708      return "ERR:0:Not implemented yet.\r\n";      }
709        catch (LinuxSamplerException e) {
710            result.Error(e);
711        }
712        return result.Produce();
713    }
714    
715    String LSCPServer::GetAvailableMidiInputDrivers() {
716        dmsg(2,("LSCPServer: GetAvailableMidiInputDrivers()\n"));
717        LSCPResultSet result;
718        try {
719            String s = MidiInputDeviceFactory::AvailableDriversAsString();
720            result.Add(s);
721        }
722        catch (LinuxSamplerException e) {
723            result.Error(e);
724        }
725        return result.Produce();
726    }
727    
728    String LSCPServer::GetMidiInputDriverInfo(String Driver) {
729        dmsg(2,("LSCPServer: GetMidiInputDriverInfo(Driver=%s)\n",Driver.c_str()));
730        LSCPResultSet result;
731        try {
732            result.Add("DESCRIPTION", MidiInputDeviceFactory::GetDriverDescription(Driver));
733            result.Add("VERSION",     MidiInputDeviceFactory::GetDriverVersion(Driver));
734    
735            std::map<String,DeviceCreationParameter*> parameters = MidiInputDeviceFactory::GetAvailableDriverParameters(Driver);
736            if (parameters.size()) { // if there are parameters defined for this driver
737                String s;
738                std::map<String,DeviceCreationParameter*>::iterator iter = parameters.begin();
739                for (;iter != parameters.end(); iter++) {
740                    if (s != "") s += ",";
741                    s += iter->first;
742                }
743                result.Add("PARAMETERS", s);
744            }
745        }
746        catch (LinuxSamplerException e) {
747            result.Error(e);
748        }
749        return result.Produce();
750    }
751    
752    String LSCPServer::GetAudioOutputDriverInfo(String Driver) {
753        dmsg(2,("LSCPServer: GetAudioOutputDriverInfo(Driver=%s)\n",Driver.c_str()));
754        LSCPResultSet result;
755        try {
756            result.Add("DESCRIPTION", AudioOutputDeviceFactory::GetDriverDescription(Driver));
757            result.Add("VERSION",     AudioOutputDeviceFactory::GetDriverVersion(Driver));
758    
759            std::map<String,DeviceCreationParameter*> parameters = AudioOutputDeviceFactory::GetAvailableDriverParameters(Driver);
760            if (parameters.size()) { // if there are parameters defined for this driver
761                String s;
762                std::map<String,DeviceCreationParameter*>::iterator iter = parameters.begin();
763                for (;iter != parameters.end(); iter++) {
764                    if (s != "") s += ",";
765                    s += iter->first;
766                }
767                result.Add("PARAMETERS", s);
768            }
769        }
770        catch (LinuxSamplerException e) {
771            result.Error(e);
772        }
773        return result.Produce();
774    }
775    
776    String LSCPServer::GetMidiInputDriverParameterInfo(String Driver, String Parameter, std::map<String,String> DependencyList) {
777        dmsg(2,("LSCPServer: GetMidiInputDriverParameterInfo(Driver=%s,Parameter=%s,DependencyListSize=%d)\n",Driver.c_str(),Parameter.c_str(),DependencyList.size()));
778        LSCPResultSet result;
779        try {
780            DeviceCreationParameter* pParameter = MidiInputDeviceFactory::GetDriverParameter(Driver, Parameter);
781            result.Add("TYPE",         pParameter->Type());
782            result.Add("DESCRIPTION",  pParameter->Description());
783            result.Add("MANDATORY",    pParameter->Mandatory());
784            result.Add("FIX",          pParameter->Fix());
785            result.Add("MULTIPLICITY", pParameter->Multiplicity());
786            optional<String> oDepends       = pParameter->Depends();
787            optional<String> oDefault       = pParameter->Default(DependencyList);
788            optional<String> oRangeMin      = pParameter->RangeMin(DependencyList);
789            optional<String> oRangeMax      = pParameter->RangeMax(DependencyList);
790            optional<String> oPossibilities = pParameter->Possibilities(DependencyList);
791            if (oDepends)       result.Add("DEPENDS",       *oDepends);
792            if (oDefault)       result.Add("DEFAULT",       *oDefault);
793            if (oRangeMin)      result.Add("RANGE_MIN",     *oRangeMin);
794            if (oRangeMax)      result.Add("RANGE_MAX",     *oRangeMax);
795            if (oPossibilities) result.Add("POSSIBILITIES", *oPossibilities);
796        }
797        catch (LinuxSamplerException e) {
798            result.Error(e);
799        }
800        return result.Produce();
801    }
802    
803    String LSCPServer::GetAudioOutputDriverParameterInfo(String Driver, String Parameter, std::map<String,String> DependencyList) {
804        dmsg(2,("LSCPServer: GetAudioOutputDriverParameterInfo(Driver=%s,Parameter=%s,DependencyListSize=%d)\n",Driver.c_str(),Parameter.c_str(),DependencyList.size()));
805        LSCPResultSet result;
806        try {
807            DeviceCreationParameter* pParameter = AudioOutputDeviceFactory::GetDriverParameter(Driver, Parameter);
808            result.Add("TYPE",         pParameter->Type());
809            result.Add("DESCRIPTION",  pParameter->Description());
810            result.Add("MANDATORY",    pParameter->Mandatory());
811            result.Add("FIX",          pParameter->Fix());
812            result.Add("MULTIPLICITY", pParameter->Multiplicity());
813            optional<String> oDepends       = pParameter->Depends();
814            optional<String> oDefault       = pParameter->Default(DependencyList);
815            optional<String> oRangeMin      = pParameter->RangeMin(DependencyList);
816            optional<String> oRangeMax      = pParameter->RangeMax(DependencyList);
817            optional<String> oPossibilities = pParameter->Possibilities(DependencyList);
818            if (oDepends)       result.Add("DEPENDS",       *oDepends);
819            if (oDefault)       result.Add("DEFAULT",       *oDefault);
820            if (oRangeMin)      result.Add("RANGE_MIN",     *oRangeMin);
821            if (oRangeMax)      result.Add("RANGE_MAX",     *oRangeMax);
822            if (oPossibilities) result.Add("POSSIBILITIES", *oPossibilities);
823        }
824        catch (LinuxSamplerException e) {
825            result.Error(e);
826        }
827        return result.Produce();
828    }
829    
830    String LSCPServer::GetAudioOutputDeviceCount() {
831        dmsg(2,("LSCPServer: GetAudioOutputDeviceCount()\n"));
832        LSCPResultSet result;
833        try {
834            uint count = pSampler->AudioOutputDevices();
835            result.Add(count); // success
836        }
837        catch (LinuxSamplerException e) {
838            result.Error(e);
839        }
840        return result.Produce();
841    }
842    
843    String LSCPServer::GetMidiInputDeviceCount() {
844        dmsg(2,("LSCPServer: GetMidiInputDeviceCount()\n"));
845        LSCPResultSet result;
846        try {
847            uint count = pSampler->MidiInputDevices();
848            result.Add(count); // success
849        }
850        catch (LinuxSamplerException e) {
851            result.Error(e);
852        }
853        return result.Produce();
854    }
855    
856    String LSCPServer::GetAudioOutputDevices() {
857        dmsg(2,("LSCPServer: GetAudioOutputDevices()\n"));
858        LSCPResultSet result;
859        try {
860            String s;
861            std::map<uint, AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
862            std::map<uint, AudioOutputDevice*>::iterator iter = devices.begin();
863            for (; iter != devices.end(); iter++) {
864                if (s != "") s += ",";
865                s += ToString(iter->first);
866            }
867            result.Add(s);
868        }
869        catch (LinuxSamplerException e) {
870            result.Error(e);
871        }
872        return result.Produce();
873    }
874    
875    String LSCPServer::GetMidiInputDevices() {
876        dmsg(2,("LSCPServer: GetMidiInputDevices()\n"));
877        LSCPResultSet result;
878        try {
879            String s;
880            std::map<uint, MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
881            std::map<uint, MidiInputDevice*>::iterator iter = devices.begin();
882            for (; iter != devices.end(); iter++) {
883                if (s != "") s += ",";
884                s += ToString(iter->first);
885            }
886            result.Add(s);
887        }
888        catch (LinuxSamplerException e) {
889            result.Error(e);
890        }
891        return result.Produce();
892    }
893    
894    String LSCPServer::GetAudioOutputDeviceInfo(uint DeviceIndex) {
895        dmsg(2,("LSCPServer: GetAudioOutputDeviceInfo(DeviceIndex=%d)\n",DeviceIndex));
896        LSCPResultSet result;
897        try {
898            std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
899            if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceIndex) + ".");
900            AudioOutputDevice* pDevice = devices[DeviceIndex];
901            result.Add("DRIVER", pDevice->Driver());
902            std::map<String,DeviceCreationParameter*> parameters = pDevice->DeviceParameters();
903            std::map<String,DeviceCreationParameter*>::iterator iter = parameters.begin();
904            for (; iter != parameters.end(); iter++) {
905                result.Add(iter->first, iter->second->Value());
906            }
907        }
908        catch (LinuxSamplerException e) {
909            result.Error(e);
910        }
911        return result.Produce();
912    }
913    
914    String LSCPServer::GetMidiInputDeviceInfo(uint DeviceIndex) {
915        dmsg(2,("LSCPServer: GetMidiInputDeviceInfo(DeviceIndex=%d)\n",DeviceIndex));
916        LSCPResultSet result;
917        try {
918            std::map<uint,MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
919            if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(DeviceIndex) + ".");
920            MidiInputDevice* pDevice = devices[DeviceIndex];
921            result.Add("DRIVER", pDevice->Driver());
922            std::map<String,DeviceCreationParameter*> parameters = pDevice->DeviceParameters();
923            std::map<String,DeviceCreationParameter*>::iterator iter = parameters.begin();
924            for (; iter != parameters.end(); iter++) {
925                result.Add(iter->first, iter->second->Value());
926            }
927        }
928        catch (LinuxSamplerException e) {
929            result.Error(e);
930        }
931        return result.Produce();
932    }
933    String LSCPServer::GetMidiInputPortInfo(uint DeviceIndex, uint PortIndex) {
934        dmsg(2,("LSCPServer: GetMidiInputPortInfo(DeviceIndex=%d, PortIndex=%d)\n",DeviceIndex, PortIndex));
935        LSCPResultSet result;
936        try {
937            // get MIDI input device
938            std::map<uint,MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
939            if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(DeviceIndex) + ".");
940            MidiInputDevice* pDevice = devices[DeviceIndex];
941    
942            // get MIDI port
943            MidiInputPort* pMidiInputPort = pDevice->GetPort(PortIndex);
944            if (!pMidiInputPort) throw LinuxSamplerException("There is no MIDI input port with index " + ToString(PortIndex) + ".");
945    
946            // return the values of all MIDI port parameters
947            std::map<String,DeviceRuntimeParameter*> parameters = pMidiInputPort->PortParameters();
948            std::map<String,DeviceRuntimeParameter*>::iterator iter = parameters.begin();
949            for (; iter != parameters.end(); iter++) {
950                result.Add(iter->first, iter->second->Value());
951            }
952        }
953        catch (LinuxSamplerException e) {
954            result.Error(e);
955        }
956        return result.Produce();
957    }
958    
959    String LSCPServer::GetAudioOutputChannelInfo(uint DeviceId, uint ChannelId) {
960        dmsg(2,("LSCPServer: GetAudioOutputChannelInfo(DeviceId=%d,ChannelId)\n",DeviceId,ChannelId));
961        LSCPResultSet result;
962        try {
963            // get audio output device
964            std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
965            if (!devices.count(DeviceId)) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceId) + ".");
966            AudioOutputDevice* pDevice = devices[DeviceId];
967    
968            // get audio channel
969            AudioChannel* pChannel = pDevice->Channel(ChannelId);
970            if (!pChannel) throw LinuxSamplerException("Audio output device does not have audio channel " + ToString(ChannelId) + ".");
971    
972            // return the values of all audio channel parameters
973            std::map<String,DeviceRuntimeParameter*> parameters = pChannel->ChannelParameters();
974            std::map<String,DeviceRuntimeParameter*>::iterator iter = parameters.begin();
975            for (; iter != parameters.end(); iter++) {
976                result.Add(iter->first, iter->second->Value());
977            }
978        }
979        catch (LinuxSamplerException e) {
980            result.Error(e);
981        }
982        return result.Produce();
983    }
984    
985    String LSCPServer::GetMidiInputPortParameterInfo(uint DeviceId, uint PortId, String ParameterName) {
986        dmsg(2,("LSCPServer: GetMidiInputPortParameterInfo(DeviceId=%d,PortId=%d,ParameterName=%s)\n",DeviceId,PortId,ParameterName.c_str()));
987        LSCPResultSet result;
988        try {
989            // get MIDI input device
990            std::map<uint,MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
991            if (!devices.count(DeviceId)) throw LinuxSamplerException("There is no midi input device with index " + ToString(DeviceId) + ".");
992            MidiInputDevice* pDevice = devices[DeviceId];
993    
994            // get midi port
995            MidiInputPort* pPort = pDevice->GetPort(PortId);
996            if (!pPort) throw LinuxSamplerException("Midi input device does not have port " + ToString(PortId) + ".");
997    
998            // get desired port parameter
999            std::map<String,DeviceRuntimeParameter*> parameters = pPort->PortParameters();
1000            if (!parameters.count(ParameterName)) throw LinuxSamplerException("Midi port does not provide a parameter '" + ParameterName + "'.");
1001            DeviceRuntimeParameter* pParameter = parameters[ParameterName];
1002    
1003            // return all fields of this audio channel parameter
1004            result.Add("TYPE",         pParameter->Type());
1005            result.Add("DESCRIPTION",  pParameter->Description());
1006            result.Add("FIX",          pParameter->Fix());
1007            result.Add("MULTIPLICITY", pParameter->Multiplicity());
1008            if (pParameter->RangeMin())      result.Add("RANGE_MIN",     *pParameter->RangeMin());
1009            if (pParameter->RangeMax())      result.Add("RANGE_MAX",     *pParameter->RangeMax());
1010            if (pParameter->Possibilities()) result.Add("POSSIBILITIES", *pParameter->Possibilities());
1011        }
1012        catch (LinuxSamplerException e) {
1013            result.Error(e);
1014        }
1015        return result.Produce();
1016    }
1017    
1018    String LSCPServer::GetAudioOutputChannelParameterInfo(uint DeviceId, uint ChannelId, String ParameterName) {
1019        dmsg(2,("LSCPServer: GetAudioOutputChannelParameterInfo(DeviceId=%d,ChannelId=%d,ParameterName=%s)\n",DeviceId,ChannelId,ParameterName.c_str()));
1020        LSCPResultSet result;
1021        try {
1022            // get audio output device
1023            std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
1024            if (!devices.count(DeviceId)) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceId) + ".");
1025            AudioOutputDevice* pDevice = devices[DeviceId];
1026    
1027            // get audio channel
1028            AudioChannel* pChannel = pDevice->Channel(ChannelId);
1029            if (!pChannel) throw LinuxSamplerException("Audio output device does not have audio channel " + ToString(ChannelId) + ".");
1030    
1031            // get desired audio channel parameter
1032            std::map<String,DeviceRuntimeParameter*> parameters = pChannel->ChannelParameters();
1033            if (!parameters.count(ParameterName)) throw LinuxSamplerException("Audio channel does not provide a parameter '" + ParameterName + "'.");
1034            DeviceRuntimeParameter* pParameter = parameters[ParameterName];
1035    
1036            // return all fields of this audio channel parameter
1037            result.Add("TYPE",         pParameter->Type());
1038            result.Add("DESCRIPTION",  pParameter->Description());
1039            result.Add("FIX",          pParameter->Fix());
1040            result.Add("MULTIPLICITY", pParameter->Multiplicity());
1041            if (pParameter->RangeMin())      result.Add("RANGE_MIN",     *pParameter->RangeMin());
1042            if (pParameter->RangeMax())      result.Add("RANGE_MAX",     *pParameter->RangeMax());
1043            if (pParameter->Possibilities()) result.Add("POSSIBILITIES", *pParameter->Possibilities());
1044        }
1045        catch (LinuxSamplerException e) {
1046            result.Error(e);
1047        }
1048        return result.Produce();
1049    }
1050    
1051    String LSCPServer::SetAudioOutputChannelParameter(uint DeviceId, uint ChannelId, String ParamKey, String ParamVal) {
1052        dmsg(2,("LSCPServer: SetAudioOutputChannelParameter(DeviceId=%d,ChannelId=%d,ParamKey=%s,ParamVal=%s)\n",DeviceId,ChannelId,ParamKey.c_str(),ParamVal.c_str()));
1053        LSCPResultSet result;
1054        try {
1055            // get audio output device
1056            std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
1057            if (!devices.count(DeviceId)) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceId) + ".");
1058            AudioOutputDevice* pDevice = devices[DeviceId];
1059    
1060            // get audio channel
1061            AudioChannel* pChannel = pDevice->Channel(ChannelId);
1062            if (!pChannel) throw LinuxSamplerException("Audio output device does not have audio channel " + ToString(ChannelId) + ".");
1063    
1064            // get desired audio channel parameter
1065            std::map<String,DeviceRuntimeParameter*> parameters = pChannel->ChannelParameters();
1066            if (!parameters.count(ParamKey)) throw LinuxSamplerException("Audio channel does not provide a parameter '" + ParamKey + "'.");
1067            DeviceRuntimeParameter* pParameter = parameters[ParamKey];
1068    
1069            // set new channel parameter value
1070            pParameter->SetValue(ParamVal);
1071        }
1072        catch (LinuxSamplerException e) {
1073            result.Error(e);
1074        }
1075        return result.Produce();
1076    }
1077    
1078    String LSCPServer::SetAudioOutputDeviceParameter(uint DeviceIndex, String ParamKey, String ParamVal) {
1079        dmsg(2,("LSCPServer: SetAudioOutputDeviceParameter(DeviceIndex=%d,ParamKey=%s,ParamVal=%s)\n",DeviceIndex,ParamKey.c_str(),ParamVal.c_str()));
1080        LSCPResultSet result;
1081        try {
1082            std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
1083            if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceIndex) + ".");
1084            AudioOutputDevice* pDevice = devices[DeviceIndex];
1085            std::map<String,DeviceCreationParameter*> parameters = pDevice->DeviceParameters();
1086            if (!parameters.count(ParamKey)) throw LinuxSamplerException("Audio output device " + ToString(DeviceIndex) + " does not have a device parameter '" + ParamKey + "'");
1087            parameters[ParamKey]->SetValue(ParamVal);
1088        }
1089        catch (LinuxSamplerException e) {
1090            result.Error(e);
1091        }
1092        return result.Produce();
1093    }
1094    
1095    String LSCPServer::SetMidiInputDeviceParameter(uint DeviceIndex, String ParamKey, String ParamVal) {
1096        dmsg(2,("LSCPServer: SetMidiOutputDeviceParameter(DeviceIndex=%d,ParamKey=%s,ParamVal=%s)\n",DeviceIndex,ParamKey.c_str(),ParamVal.c_str()));
1097        LSCPResultSet result;
1098        try {
1099            std::map<uint,MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
1100            if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(DeviceIndex) + ".");
1101            MidiInputDevice* pDevice = devices[DeviceIndex];
1102            std::map<String,DeviceCreationParameter*> parameters = pDevice->DeviceParameters();
1103            if (!parameters.count(ParamKey)) throw LinuxSamplerException("MIDI input device " + ToString(DeviceIndex) + " does not have a device parameter '" + ParamKey + "'");
1104            parameters[ParamKey]->SetValue(ParamVal);
1105        }
1106        catch (LinuxSamplerException e) {
1107            result.Error(e);
1108        }
1109        return result.Produce();
1110    }
1111    
1112    String LSCPServer::SetMidiInputPortParameter(uint DeviceIndex, uint PortIndex, String ParamKey, String ParamVal) {
1113        dmsg(2,("LSCPServer: SetMidiOutputDeviceParameter(DeviceIndex=%d,ParamKey=%s,ParamVal=%s)\n",DeviceIndex,ParamKey.c_str(),ParamVal.c_str()));
1114        LSCPResultSet result;
1115        try {
1116            // get MIDI input device
1117            std::map<uint,MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
1118            if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(DeviceIndex) + ".");
1119            MidiInputDevice* pDevice = devices[DeviceIndex];
1120    
1121            // get MIDI port
1122            MidiInputPort* pMidiInputPort = pDevice->GetPort(PortIndex);
1123            if (!pMidiInputPort) throw LinuxSamplerException("There is no MIDI input port with index " + ToString(PortIndex) + ".");
1124    
1125            // set port parameter value
1126            std::map<String,DeviceRuntimeParameter*> parameters = pMidiInputPort->PortParameters();
1127            if (!parameters.count(ParamKey)) throw LinuxSamplerException("MIDI input device " + ToString(PortIndex) + " does not have a parameter '" + ParamKey + "'");
1128            parameters[ParamKey]->SetValue(ParamVal);
1129        }
1130        catch (LinuxSamplerException e) {
1131            result.Error(e);
1132        }
1133        return result.Produce();
1134  }  }
1135    
1136  /**  /**
1137   * 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
1138   * playback on a particular sampler channel.   * playback on a particular sampler channel.
1139   */   */
1140  String LSCPServer::SetAudioOutputChannel(uint AudioOutputChannel, uint SamplerChannel) {  String LSCPServer::SetAudioOutputChannel(uint ChannelAudioOutputChannel, uint AudioOutputDeviceInputChannel, uint uiSamplerChannel) {
1141      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));
1142      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result;
1143        try {
1144            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1145            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1146            Engine* pEngine = pSamplerChannel->GetEngine();
1147            if (!pEngine) throw LinuxSamplerException("No engine deployed on sampler channel " + ToString(uiSamplerChannel));
1148            if (!pSamplerChannel->GetAudioOutputDevice()) throw LinuxSamplerException("No audio output device connected to sampler channel " + ToString(uiSamplerChannel));
1149            pEngine->SetOutputChannel(ChannelAudioOutputChannel, AudioOutputDeviceInputChannel);
1150        }
1151        catch (LinuxSamplerException e) {
1152             result.Error(e);
1153        }
1154        return result.Produce();
1155  }  }
1156    
1157  /**  String LSCPServer::SetAudioOutputDevice(uint AudioDeviceId, uint uiSamplerChannel) {
1158   * 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));
1159   * engine of a particular sampler channel should listen to.      LSCPResultSet result;
1160   */      try {
1161  String LSCPServer::SetMIDIInputPort(String MIDIInputPort, uint Samplerchannel) {          SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1162      dmsg(2,("LSCPServer: SetMIDIInputPort(MIDIInputPort=%s, Samplerchannel=%d)\n", MIDIInputPort.c_str(), Samplerchannel));          if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1163      return "ERR:0:Not implemented yet.\r\n";          std::map<uint, AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
1164            if (!devices.count(AudioDeviceId)) throw LinuxSamplerException("There is no audio output device with index " + ToString(AudioDeviceId));
1165            AudioOutputDevice* pDevice = devices[AudioDeviceId];
1166            pSamplerChannel->SetAudioOutputDevice(pDevice);
1167        }
1168        catch (LinuxSamplerException e) {
1169             result.Error(e);
1170        }
1171        return result.Produce();
1172    }
1173    
1174    String LSCPServer::SetAudioOutputType(String AudioOutputDriver, uint uiSamplerChannel) {
1175        dmsg(2,("LSCPServer: SetAudioOutputType(String AudioOutputDriver=%s, SamplerChannel=%d)\n",AudioOutputDriver.c_str(),uiSamplerChannel));
1176        LSCPResultSet result;
1177        try {
1178            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1179            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1180            // Driver type name aliasing...
1181            if (AudioOutputDriver == "Alsa") AudioOutputDriver = "ALSA";
1182            if (AudioOutputDriver == "Jack") AudioOutputDriver = "JACK";
1183            // Check if there's one audio output device already created
1184            // for the intended audio driver type (AudioOutputDriver)...
1185            AudioOutputDevice *pDevice = NULL;
1186            std::map<uint, AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
1187            std::map<uint, AudioOutputDevice*>::iterator iter = devices.begin();
1188            for (; iter != devices.end(); iter++) {
1189                if ((iter->second)->Driver() == AudioOutputDriver) {
1190                    pDevice = iter->second;
1191                    break;
1192                }
1193            }
1194            // If it doesn't exist, create a new one with default parameters...
1195            if (pDevice == NULL) {
1196                std::map<String,String> params;
1197                pDevice = pSampler->CreateAudioOutputDevice(AudioOutputDriver, params);
1198            }
1199            // Must have a device...
1200            if (pDevice == NULL)
1201                throw LinuxSamplerException("Internal error: could not create audio output device.");
1202            // Set it as the current channel device...
1203            pSamplerChannel->SetAudioOutputDevice(pDevice);
1204        }
1205        catch (LinuxSamplerException e) {
1206             result.Error(e);
1207        }
1208        return result.Produce();
1209    }
1210    
1211    String LSCPServer::SetMIDIInputPort(uint MIDIPort, uint uiSamplerChannel) {
1212        dmsg(2,("LSCPServer: SetMIDIInputPort(MIDIPort=%d, SamplerChannel=%d)\n",MIDIPort,uiSamplerChannel));
1213        LSCPResultSet result;
1214        try {
1215            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1216            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1217            pSamplerChannel->SetMidiInputPort(MIDIPort);
1218        }
1219        catch (LinuxSamplerException e) {
1220             result.Error(e);
1221        }
1222        return result.Produce();
1223    }
1224    
1225    String LSCPServer::SetMIDIInputChannel(uint MIDIChannel, uint uiSamplerChannel) {
1226        dmsg(2,("LSCPServer: SetMIDIInputChannel(MIDIChannel=%d, SamplerChannel=%d)\n",MIDIChannel,uiSamplerChannel));
1227        LSCPResultSet result;
1228        try {
1229            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1230            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1231            pSamplerChannel->SetMidiInputChannel((MidiInputPort::midi_chan_t) MIDIChannel);
1232        }
1233        catch (LinuxSamplerException e) {
1234             result.Error(e);
1235        }
1236        return result.Produce();
1237    }
1238    
1239    String LSCPServer::SetMIDIInputDevice(uint MIDIDeviceId, uint uiSamplerChannel) {
1240        dmsg(2,("LSCPServer: SetMIDIInputDevice(MIDIDeviceId=%d, SamplerChannel=%d)\n",MIDIDeviceId,uiSamplerChannel));
1241        LSCPResultSet result;
1242        try {
1243            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1244            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1245            std::map<uint, MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
1246            if (!devices.count(MIDIDeviceId)) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(MIDIDeviceId));
1247            MidiInputDevice* pDevice = devices[MIDIDeviceId];
1248            pSamplerChannel->SetMidiInputDevice(pDevice);
1249        }
1250        catch (LinuxSamplerException e) {
1251             result.Error(e);
1252        }
1253        return result.Produce();
1254    }
1255    
1256    String LSCPServer::SetMIDIInputType(String MidiInputDriver, uint uiSamplerChannel) {
1257        dmsg(2,("LSCPServer: SetMIDIInputType(String MidiInputDriver=%s, SamplerChannel=%d)\n",MidiInputDriver.c_str(),uiSamplerChannel));
1258        LSCPResultSet result;
1259        try {
1260            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1261            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1262            // Driver type name aliasing...
1263            if (MidiInputDriver == "Alsa") MidiInputDriver = "ALSA";
1264            // Check if there's one MIDI input device already created
1265            // for the intended MIDI driver type (MidiInputDriver)...
1266            MidiInputDevice *pDevice = NULL;
1267            std::map<uint, MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
1268            std::map<uint, MidiInputDevice*>::iterator iter = devices.begin();
1269            for (; iter != devices.end(); iter++) {
1270                if ((iter->second)->Driver() == MidiInputDriver) {
1271                    pDevice = iter->second;
1272                    break;
1273                }
1274            }
1275            // If it doesn't exist, create a new one with default parameters...
1276            if (pDevice == NULL) {
1277                std::map<String,String> params;
1278                pDevice = pSampler->CreateMidiInputDevice(MidiInputDriver, params);
1279                // Make it with at least one initial port.
1280                std::map<String,DeviceCreationParameter*> parameters = pDevice->DeviceParameters();
1281                parameters["PORTS"]->SetValue("1");
1282            }
1283            // Must have a device...
1284            if (pDevice == NULL)
1285                throw LinuxSamplerException("Internal error: could not create MIDI input device.");
1286            // Set it as the current channel device...
1287            pSamplerChannel->SetMidiInputDevice(pDevice);
1288        }
1289        catch (LinuxSamplerException e) {
1290             result.Error(e);
1291        }
1292        return result.Produce();
1293  }  }
1294    
1295  /**  /**
1296   * 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
1297   * engine of a particular sampler channel should listen to.   * engine of a particular sampler channel should listen to.
1298   */   */
1299  String LSCPServer::SetMIDIInputChannel(uint MIDIChannel, uint SamplerChannel) {  String LSCPServer::SetMIDIInput(uint MIDIDeviceId, uint MIDIPort, uint MIDIChannel, uint uiSamplerChannel) {
1300      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));
1301      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result;
1302        try {
1303            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1304            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1305            std::map<uint, MidiInputDevice*> devices =  pSampler->GetMidiInputDevices();
1306            if (!devices.count(MIDIDeviceId)) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(MIDIDeviceId));
1307            MidiInputDevice* pDevice = devices[MIDIDeviceId];
1308            pSamplerChannel->SetMidiInput(pDevice, MIDIPort, (MidiInputPort::midi_chan_t) MIDIChannel);
1309        }
1310        catch (LinuxSamplerException e) {
1311             result.Error(e);
1312        }
1313        return result.Produce();
1314  }  }
1315    
1316  /**  /**
1317   * 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
1318   * particular sampler channel.   * particular sampler channel.
1319   */   */
1320  String LSCPServer::SetVolume(double Volume, uint SamplerChannel) {  String LSCPServer::SetVolume(double dVolume, uint uiSamplerChannel) {
1321      dmsg(2,("LSCPServer: SetVolume(Volume=%f, SamplerChannel=%d)\n", Volume, SamplerChannel));      dmsg(2,("LSCPServer: SetVolume(Volume=%f, SamplerChannel=%d)\n", dVolume, uiSamplerChannel));
1322      pEngine->Volume = Volume;      LSCPResultSet result;
1323      return "OK\r\n";      try {
1324            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1325            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1326            Engine* pEngine = pSamplerChannel->GetEngine();
1327            if (!pEngine) throw LinuxSamplerException("No engine loaded on sampler channel");
1328            pEngine->Volume(dVolume);
1329        }
1330        catch (LinuxSamplerException e) {
1331             result.Error(e);
1332        }
1333        return result.Produce();
1334  }  }
1335    
1336  /**  /**
1337   * Will be called by the parser to reset a particular sampler channel.   * Will be called by the parser to reset a particular sampler channel.
1338   */   */
1339  String LSCPServer::ResetChannel(uint SamplerChannel) {  String LSCPServer::ResetChannel(uint uiSamplerChannel) {
1340      dmsg(2,("LSCPServer: ResetChannel(SamplerChannel=%d)\n", SamplerChannel));      dmsg(2,("LSCPServer: ResetChannel(SamplerChannel=%d)\n", uiSamplerChannel));
1341      pEngine->Reset();      LSCPResultSet result;
1342      return "OK\r\n";      try {
1343            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1344            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1345            Engine* pEngine = pSamplerChannel->GetEngine();
1346            if (!pEngine) throw LinuxSamplerException("No engine loaded on sampler channel");
1347            pEngine->Reset();
1348        }
1349        catch (LinuxSamplerException e) {
1350             result.Error(e);
1351        }
1352        return result.Produce();
1353    }
1354    
1355    /**
1356     * Will be called by the parser to reset the whole sampler.
1357     */
1358    String LSCPServer::ResetSampler() {
1359        dmsg(2,("LSCPServer: ResetSampler()\n"));
1360        pSampler->Reset();
1361        LSCPResultSet result;
1362        return result.Produce();
1363  }  }
1364    
1365  /**  /**
1366   * 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
1367   * server for receiving event messages.   * server for receiving event messages.
1368   */   */
1369  String LSCPServer::SubscribeNotification(uint UDPPort) {  String LSCPServer::SubscribeNotification(LSCPEvent::event_t type) {
1370      dmsg(2,("LSCPServer: SubscribeNotification(UDPPort=%d)\n", UDPPort));      dmsg(2,("LSCPServer: SubscribeNotification(Event=%s)\n", LSCPEvent::Name(type).c_str()));
1371      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result;
1372        SubscriptionMutex.Lock();
1373        eventSubscriptions[type].push_back(currentSocket);
1374        SubscriptionMutex.Unlock();
1375        return result.Produce();
1376  }  }
1377    
1378  /**  /**
1379   * 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
1380   * for not receiving further event messages.   * for not receiving further event messages.
1381   */   */
1382  String LSCPServer::UnsubscribeNotification(String SessionID) {  String LSCPServer::UnsubscribeNotification(LSCPEvent::event_t type) {
1383      dmsg(2,("LSCPServer: UnsubscribeNotification(SessionID=%s)\n", SessionID.c_str()));      dmsg(2,("LSCPServer: UnsubscribeNotification(Event=%s)\n", LSCPEvent::Name(type).c_str()));
1384      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result;
1385        SubscriptionMutex.Lock();
1386        eventSubscriptions[type].remove(currentSocket);
1387        SubscriptionMutex.Unlock();
1388        return result.Produce();
1389    }
1390    
1391    /**
1392     * Will be called by the parser to enable or disable echo mode; if echo
1393     * mode is enabled, all commands from the client will (immediately) be
1394     * echoed back to the client.
1395     */
1396    String LSCPServer::SetEcho(yyparse_param_t* pSession, double boolean_value) {
1397        dmsg(2,("LSCPServer: SetEcho(val=%f)\n", boolean_value));
1398        LSCPResultSet result;
1399        try {
1400            if      (boolean_value == 0) pSession->bVerbose = false;
1401            else if (boolean_value == 1) pSession->bVerbose = true;
1402            else throw LinuxSamplerException("Not a boolean value, must either be 0 or 1");
1403        }
1404        catch (LinuxSamplerException e) {
1405             result.Error(e);
1406        }
1407        return result.Produce();
1408    }
1409    
1410    // Instrument loader constructor.
1411    LSCPLoadInstrument::LSCPLoadInstrument(Engine* pEngine, String Filename, uint uiInstrument)
1412        : Thread(false, 0, -4)
1413    {
1414        this->pEngine = pEngine;
1415        this->Filename = Filename;
1416        this->uiInstrument = uiInstrument;
1417    }
1418    
1419    // Instrument loader process.
1420    int LSCPLoadInstrument::Main()
1421    {
1422        try {
1423            pEngine->LoadInstrument(Filename.c_str(), uiInstrument);
1424        }
1425    
1426        catch (LinuxSamplerException e) {
1427            e.PrintMessage();
1428        }
1429    
1430        // Always re-enable the engine.
1431        pEngine->Enable();
1432    
1433        // FIXME: Shoot ourselves on the foot?
1434        delete this;
1435  }  }
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