/[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 225 by schoenebeck, Sun Aug 22 14:46:47 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 "../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    
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    /**
65     * Blocks the calling thread until the LSCP Server is initialized and
66     * accepting socket connections, if the server is already initialized then
67     * this method will return immediately.
68     * @param TimeoutSeconds     - optional: max. wait time in seconds
69     *                             (default: 0s)
70     * @param TimeoutNanoSeconds - optional: max wait time in nano seconds
71     *                             (default: 0ns)
72     * @returns  0 on success, a value less than 0 if timeout exceeded
73     */
74    int LSCPServer::WaitUntilInitialized(long TimeoutSeconds, long TimeoutNanoSeconds) {
75        return Initialized.WaitAndUnlockIf(false, TimeoutSeconds, TimeoutNanoSeconds);
76  }  }
77    
78  int LSCPServer::Main() {  int LSCPServer::Main() {
79      hSocket = socket(AF_INET, SOCK_STREAM, 0);      int hSocket = socket(AF_INET, SOCK_STREAM, 0);
80      if (hSocket < 0) {      if (hSocket < 0) {
81          std::cerr << "LSCPServer: Could not create server socket." << std::endl;          std::cerr << "LSCPServer: Could not create server socket." << std::endl;
82          return -1;          //return -1;
83            exit(EXIT_FAILURE);
84      }      }
85    
86      SocketAddress.sin_family      = AF_INET;      SocketAddress.sin_family      = AF_INET;
# Line 40  int LSCPServer::Main() { Line 90  int LSCPServer::Main() {
90      if (bind(hSocket, (sockaddr*) &SocketAddress, sizeof(sockaddr_in)) < 0) {      if (bind(hSocket, (sockaddr*) &SocketAddress, sizeof(sockaddr_in)) < 0) {
91          std::cerr << "LSCPServer: Could not bind server socket." << std::endl;          std::cerr << "LSCPServer: Could not bind server socket." << std::endl;
92          close(hSocket);          close(hSocket);
93          return -1;          //return -1;
94            exit(EXIT_FAILURE);
95      }      }
96    
97      listen(hSocket, 1);      listen(hSocket, 1);
98      dmsg(1,("LSCPServer: Server running.\n")); // server running      Initialized.Set(true);
99    
100      // now wait for client connections and handle their requests      // now wait for client connections and handle their requests
101      sockaddr_in client;      sockaddr_in client;
102      int length = sizeof(client);      int length = sizeof(client);
103      while (true) {      FD_ZERO(&fdSet);
104          hSession = accept(hSocket, (sockaddr*) &client, (socklen_t*) &length);      FD_SET(hSocket, &fdSet);
105          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);  
106    
107          close(hSession);      while (true) {
108          dmsg(1,("LSCPServer: Client connection terminated.\n"));          fd_set selectSet = fdSet;
109            int retval = select(maxSessions+1, &selectSet, NULL, NULL, NULL);
110            if (retval == 0)
111                    continue; //Nothing try again
112            if (retval == -1) {
113                    std::cerr << "LSCPServer: Socket select error." << std::endl;
114                    close(hSocket);
115                    exit(EXIT_FAILURE);
116            }
117    
118            //Accept new connections now (if any)
119            if (FD_ISSET(hSocket, &selectSet)) {
120                    int socket = accept(hSocket, (sockaddr*) &client, (socklen_t*) &length);
121                    if (socket < 0) {
122                            std::cerr << "LSCPServer: Client connection failed." << std::endl;
123                            exit(EXIT_FAILURE);
124                    }
125    
126                    if (fcntl(socket, F_SETFL, O_NONBLOCK)) {
127                            std::cerr << "LSCPServer: F_SETFL O_NONBLOCK failed." << std::endl;
128                            exit(EXIT_FAILURE);
129                    }
130    
131                    // Parser initialization
132                    yyparse_param_t yyparse_param;
133                    yyparse_param.pServer  = this;
134                    yyparse_param.hSession = socket;
135    
136                    Sessions.push_back(yyparse_param);
137                    FD_SET(socket, &fdSet);
138                    if (socket > maxSessions)
139                            maxSessions = socket;
140                    dmsg(1,("LSCPServer: Client connection established on socket:%d.\n", socket));
141                    LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_misc, "Client connection established on socket", socket));
142                    continue; //Maybe this was the only selected socket, better select again
143            }
144    
145            //Something was selected and it was not the hSocket, so it must be some command(s) coming.
146            for (std::vector<yyparse_param_t>::iterator iter = Sessions.begin(); iter != Sessions.end(); iter++) {
147                    if (FD_ISSET((*iter).hSession, &selectSet)) {   //Was it this socket?
148                            if (GetLSCPCommand(iter)) {     //Have we read the entire command?
149                                    dmsg(3,("LSCPServer: Got command on socket %d, calling parser.\n", currentSocket));
150                                    int dummy; // just a temporary hack to fulfill the restart() function prototype
151                                    restart(NULL, dummy); // restart the 'scanner'
152                                    currentSocket = (*iter).hSession;  //a hack
153                                    if ((*iter).bVerbose) { // if echo mode enabled
154                                        AnswerClient(bufferedCommands[currentSocket]);
155                                    }
156                                    int result = yyparse(&(*iter));
157                                    currentSocket = -1;     //continuation of a hack
158                                    dmsg(3,("LSCPServer: Done parsing on socket %d.\n", currentSocket));
159                                    if (result == LSCP_QUIT) { //Was it a quit command by any chance?
160                                            CloseConnection(iter);
161                                    }
162                            }
163                            //socket may have been closed, iter may be invalid, get out of the loop for now.
164                            //we'll be back if there is data.
165                            break;
166                    }
167            }
168    
169            //Now let's deliver late notifies (if any)
170            NotifyBufferMutex.Lock();
171            for (std::map<int,String>::iterator iterNotify = bufferedNotifies.begin(); iterNotify != bufferedNotifies.end(); iterNotify++) {
172                    send(iterNotify->first, iterNotify->second.c_str(), iterNotify->second.size(), 0);
173                    bufferedNotifies.erase(iterNotify);
174            }
175            NotifyBufferMutex.Unlock();
176      }      }
177  }  }
178    
179    void LSCPServer::CloseConnection( std::vector<yyparse_param_t>::iterator iter ) {
180            int socket = (*iter).hSession;
181            dmsg(1,("LSCPServer: Client connection terminated on socket:%d.\n",socket));
182            LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_misc, "Client connection terminated on socket", socket));
183            Sessions.erase(iter);
184            FD_CLR(socket,  &fdSet);
185            SubscriptionMutex.Lock(); //Must unsubscribe this socket from all events (if any)
186            for (std::map< LSCPEvent::event_t, std::list<int> >::iterator iter = eventSubscriptions.begin(); iter != eventSubscriptions.end(); iter++) {
187                    iter->second.remove(socket);
188            }
189            SubscriptionMutex.Unlock();
190            NotifyMutex.Lock();
191            bufferedCommands.erase(socket);
192            bufferedNotifies.erase(socket);
193            close(socket);
194            NotifyMutex.Unlock();
195    }
196    
197    void LSCPServer::SendLSCPNotify( LSCPEvent event ) {
198            SubscriptionMutex.Lock();
199            if (eventSubscriptions.count(event.GetType()) == 0) {
200                    SubscriptionMutex.Unlock();     //Nobody is subscribed to this event
201                    return;
202            }
203            std::list<int>::iterator iter = eventSubscriptions[event.GetType()].begin();
204            std::list<int>::iterator end = eventSubscriptions[event.GetType()].end();
205            String notify = event.Produce();
206    
207            while (true) {
208                    if (NotifyMutex.Trylock()) {
209                            for(;iter != end; iter++)
210                                    send(*iter, notify.c_str(), notify.size(), 0);
211                            NotifyMutex.Unlock();
212                            break;
213                    } else {
214                            if (NotifyBufferMutex.Trylock()) {
215                                    for(;iter != end; iter++)
216                                            bufferedNotifies[*iter] += notify;
217                                    NotifyBufferMutex.Unlock();
218                                    break;
219                            }
220                    }
221            }
222            SubscriptionMutex.Unlock();
223    }
224    
225    extern int GetLSCPCommand( void *buf, int max_size ) {
226            String command = LSCPServer::bufferedCommands[LSCPServer::currentSocket];
227            if (command.size() == 0) {              //Parser wants input but we have nothing.
228                    strcpy((char*) buf, "\n");      //So give it an empty command
229                    return 1;                       //to keep it happy.
230            }
231    
232            if (max_size < command.size()) {
233                    std::cerr << "getLSCPCommand: Flex buffer too small, ignoring the command." << std::endl;
234                    return 0;       //This will never happen
235            }
236    
237            strcpy((char*) buf, command.c_str());
238            LSCPServer::bufferedCommands.erase(LSCPServer::currentSocket);
239            return command.size();
240    }
241    
242    /**
243     * Will be called to try to read the command from the socket
244     * If command is read, it will return true. Otherwise false is returned.
245     * In any case the received portion (complete or incomplete) is saved into bufferedCommand map.
246     */
247    bool LSCPServer::GetLSCPCommand( std::vector<yyparse_param_t>::iterator iter ) {
248            int socket = (*iter).hSession;
249            char c;
250            int i = 0;
251            while (true) {
252                    int result = recv(socket, (void *)&c, 1, 0); //Read one character at a time for now
253                    if (result == 0) { //socket was selected, so 0 here means client has closed the connection
254                            CloseConnection(iter);
255                            break;
256                    }
257                    if (result == 1) {
258                            if (c == '\r')
259                                    continue; //Ignore CR
260                            if (c == '\n') {
261                                    LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_misc, "Received \'" + bufferedCommands[socket] + "\' on socket", socket));
262                                    bufferedCommands[socket] += "\n";
263                                    return true; //Complete command was read
264                            }
265                            bufferedCommands[socket] += c;
266                    }
267                    if (result == -1) {
268                            if (errno == EAGAIN) //Would block, try again later.
269                                    return false;
270                            switch(errno) {
271                                    case EBADF:
272                                            dmsg(2,("LSCPScanner: The argument s is an invalid descriptor.\n"));
273                                            break;
274                                    case ECONNREFUSED:
275                                            dmsg(2,("LSCPScanner: A remote host refused to allow the network connection (typically because it is not running the requested service).\n"));
276                                            break;
277                                    case ENOTCONN:
278                                            dmsg(2,("LSCPScanner: The socket is associated with a connection-oriented protocol and has not been connected (see connect(2) and accept(2)).\n"));
279                                            break;
280                                    case ENOTSOCK:
281                                            dmsg(2,("LSCPScanner: The argument s does not refer to a socket.\n"));
282                                            break;
283                                    case EAGAIN:
284                                            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"));
285                                            break;
286                                    case EINTR:
287                                            dmsg(2,("LSCPScanner: The receive was interrupted by delivery of a signal before any data were available.\n"));
288                                            break;
289                                    case EFAULT:
290                                            dmsg(2,("LSCPScanner: The receive buffer pointer(s) point outside the process's address space.\n"));
291                                            break;
292                                    case EINVAL:
293                                            dmsg(2,("LSCPScanner: Invalid argument passed.\n"));
294                                            break;
295                                    case ENOMEM:
296                                            dmsg(2,("LSCPScanner: Could not allocate memory for recvmsg.\n"));
297                                            break;
298                                    default:
299                                            dmsg(2,("LSCPScanner: Unknown recv() error.\n"));
300                                            break;
301                            }
302                            CloseConnection(iter);
303                            break;
304                    }
305            }
306            return false;
307    }
308    
309  /**  /**
310   * 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
311   * client / frontend.   * client / frontend.
# Line 80  int LSCPServer::Main() { Line 314  int LSCPServer::Main() {
314   */   */
315  void LSCPServer::AnswerClient(String ReturnMessage) {  void LSCPServer::AnswerClient(String ReturnMessage) {
316      dmsg(2,("LSCPServer::AnswerClient(ReturnMessage=%s)", ReturnMessage.c_str()));      dmsg(2,("LSCPServer::AnswerClient(ReturnMessage=%s)", ReturnMessage.c_str()));
317      send(hSession, ReturnMessage.c_str(), ReturnMessage.size(), 0);      if (currentSocket != -1) {
318                NotifyMutex.Lock();
319                send(currentSocket, ReturnMessage.c_str(), ReturnMessage.size(), 0);
320                NotifyMutex.Unlock();
321        }
322    }
323    
324    /**
325     * Find a created audio output device index.
326     */
327    int LSCPServer::GetAudioOutputDeviceIndex ( AudioOutputDevice *pDevice )
328    {
329        // Search for the created device to get its index
330        std::map<uint, AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
331        std::map<uint, AudioOutputDevice*>::iterator iter = devices.begin();
332        for (; iter != devices.end(); iter++) {
333            if (iter->second == pDevice)
334                return iter->first;
335        }
336        // Not found.
337        return -1;
338    }
339    
340    /**
341     * Find a created midi input device index.
342     */
343    int LSCPServer::GetMidiInputDeviceIndex ( MidiInputDevice *pDevice )
344    {
345        // Search for the created device to get its index
346        std::map<uint, MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
347        std::map<uint, MidiInputDevice*>::iterator iter = devices.begin();
348        for (; iter != devices.end(); iter++) {
349            if (iter->second == pDevice)
350                return iter->first;
351        }
352        // Not found.
353        return -1;
354    }
355    
356    String LSCPServer::CreateAudioOutputDevice(String Driver, std::map<String,String> Parameters) {
357        dmsg(2,("LSCPServer: CreateAudioOutputDevice(Driver=%s)\n", Driver.c_str()));
358        LSCPResultSet result;
359        try {
360            AudioOutputDevice* pDevice = pSampler->CreateAudioOutputDevice(Driver, Parameters);
361            // search for the created device to get its index
362            int index = GetAudioOutputDeviceIndex(pDevice);
363            if (index == -1) throw LinuxSamplerException("Internal error: could not find created audio output device.");
364            result = index; // success
365        }
366        catch (LinuxSamplerException e) {
367            result.Error(e);
368        }
369        return result.Produce();
370    }
371    
372    String LSCPServer::CreateMidiInputDevice(String Driver, std::map<String,String> Parameters) {
373        dmsg(2,("LSCPServer: CreateMidiInputDevice(Driver=%s)\n", Driver.c_str()));
374        LSCPResultSet result;
375        try {
376            MidiInputDevice* pDevice = pSampler->CreateMidiInputDevice(Driver, Parameters);
377            // search for the created device to get its index
378            int index = GetMidiInputDeviceIndex(pDevice);
379            if (index == -1) throw LinuxSamplerException("Internal error: could not find created midi input device.");
380            result = index; // success
381        }
382        catch (LinuxSamplerException e) {
383            result.Error(e);
384        }
385        return result.Produce();
386    }
387    
388    String LSCPServer::DestroyAudioOutputDevice(uint DeviceIndex) {
389        dmsg(2,("LSCPServer: DestroyAudioOutputDevice(DeviceIndex=%d)\n", DeviceIndex));
390        LSCPResultSet result;
391        try {
392            std::map<uint, AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
393            if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceIndex) + ".");
394            AudioOutputDevice* pDevice = devices[DeviceIndex];
395            pSampler->DestroyAudioOutputDevice(pDevice);
396        }
397        catch (LinuxSamplerException e) {
398            result.Error(e);
399        }
400        return result.Produce();
401    }
402    
403    String LSCPServer::DestroyMidiInputDevice(uint DeviceIndex) {
404        dmsg(2,("LSCPServer: DestroyMidiInputDevice(DeviceIndex=%d)\n", DeviceIndex));
405        LSCPResultSet result;
406        try {
407            std::map<uint, MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
408            if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceIndex) + ".");
409            MidiInputDevice* pDevice = devices[DeviceIndex];
410            pSampler->DestroyMidiInputDevice(pDevice);
411        }
412        catch (LinuxSamplerException e) {
413            result.Error(e);
414        }
415        return result.Produce();
416  }  }
417    
418  /**  /**
419   * Will be called by the parser to load an instrument.   * Will be called by the parser to load an instrument.
420   */   */
421  String LSCPServer::LoadInstrument(String Filename, uint Instrument, uint SamplerChannel) {  String LSCPServer::LoadInstrument(String Filename, uint uiInstrument, uint uiSamplerChannel, bool bBackground) {
422      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));
423      result_t res = pEngine->LoadInstrument(Filename.c_str(), Instrument);      LSCPResultSet result;
424      return ConvertResult(res);      try {
425            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
426            if (!pSamplerChannel) throw LinuxSamplerException("Index out of bounds");
427            Engine* pEngine = pSamplerChannel->GetEngine();
428            if (!pEngine) throw LinuxSamplerException("No engine loaded on channel");
429            if (!pSamplerChannel->GetAudioOutputDevice())
430                throw LinuxSamplerException("No audio output device on channel");
431            if (bBackground) {
432                LSCPLoadInstrument *pLoadInstrument = new LSCPLoadInstrument(pEngine, Filename.c_str(), uiInstrument);
433                pLoadInstrument->StartThread();
434            }
435            else pEngine->LoadInstrument(Filename.c_str(), uiInstrument);
436        }
437        catch (LinuxSamplerException e) {
438             result.Error(e);
439        }
440        return result.Produce();
441  }  }
442    
443  /**  /**
444   * Will be called by the parser to load and deploy an engine.   * Will be called by the parser to load and deploy an engine.
445   */   */
446  String LSCPServer::LoadEngine(String EngineName, uint SamplerChannel) {  String LSCPServer::LoadEngine(String EngineName, uint uiSamplerChannel) {
447      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));
448      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result;
449        try {
450            Engine::type_t type;
451            if ((EngineName == "GigEngine") || (EngineName == "gig")) type = Engine::type_gig;
452            else throw LinuxSamplerException("Unknown engine type");
453            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
454            if (!pSamplerChannel) throw LinuxSamplerException("Index out of bounds");
455            pSamplerChannel->LoadEngine(type);
456        }
457        catch (LinuxSamplerException e) {
458             result.Error(e);
459        }
460        return result.Produce();
461  }  }
462    
463  /**  /**
# Line 105  String LSCPServer::LoadEngine(String Eng Line 465  String LSCPServer::LoadEngine(String Eng
465   */   */
466  String LSCPServer::GetChannels() {  String LSCPServer::GetChannels() {
467      dmsg(2,("LSCPServer: GetChannels()\n"));      dmsg(2,("LSCPServer: GetChannels()\n"));
468      return "1\r\n";      LSCPResultSet result;
469        result.Add(pSampler->SamplerChannels());
470        return result.Produce();
471    }
472    
473    /**
474     * Will be called by the parser to get the list of sampler channels.
475     */
476    String LSCPServer::ListChannels() {
477        dmsg(2,("LSCPServer: ListChannels()\n"));
478        String list;
479        std::map<uint,SamplerChannel*> channels = pSampler->GetSamplerChannels();
480        std::map<uint,SamplerChannel*>::iterator iter = channels.begin();
481        for (; iter != channels.end(); iter++) {
482            if (list != "") list += ",";
483            list += ToString(iter->first);
484        }
485        LSCPResultSet result;
486        result.Add(list);
487        return result.Produce();
488  }  }
489    
490  /**  /**
# Line 113  String LSCPServer::GetChannels() { Line 492  String LSCPServer::GetChannels() {
492   */   */
493  String LSCPServer::AddChannel() {  String LSCPServer::AddChannel() {
494      dmsg(2,("LSCPServer: AddChannel()\n"));      dmsg(2,("LSCPServer: AddChannel()\n"));
495      return "ERR:0:Not implemented yet.\r\n";      SamplerChannel* pSamplerChannel = pSampler->AddSamplerChannel();
496        LSCPResultSet result(pSamplerChannel->Index());
497        return result.Produce();
498  }  }
499    
500  /**  /**
501   * Will be called by the parser to remove a sampler channel.   * Will be called by the parser to remove a sampler channel.
502   */   */
503  String LSCPServer::RemoveChannel(uint SamplerChannel) {  String LSCPServer::RemoveChannel(uint uiSamplerChannel) {
504      dmsg(2,("LSCPServer: RemoveChannel(SamplerChannel=%d)\n", SamplerChannel));      dmsg(2,("LSCPServer: RemoveChannel(SamplerChannel=%d)\n", uiSamplerChannel));
505      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result;
506        pSampler->RemoveSamplerChannel(uiSamplerChannel);
507        return result.Produce();
508  }  }
509    
510  /**  /**
# Line 129  String LSCPServer::RemoveChannel(uint Sa Line 512  String LSCPServer::RemoveChannel(uint Sa
512   */   */
513  String LSCPServer::GetAvailableEngines() {  String LSCPServer::GetAvailableEngines() {
514      dmsg(2,("LSCPServer: GetAvailableEngines()\n"));      dmsg(2,("LSCPServer: GetAvailableEngines()\n"));
515      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result("GigEngine");
516        return result.Produce();
517  }  }
518    
519  /**  /**
# Line 137  String LSCPServer::GetAvailableEngines() Line 521  String LSCPServer::GetAvailableEngines()
521   */   */
522  String LSCPServer::GetEngineInfo(String EngineName) {  String LSCPServer::GetEngineInfo(String EngineName) {
523      dmsg(2,("LSCPServer: GetEngineInfo(EngineName=%s)\n", EngineName.c_str()));      dmsg(2,("LSCPServer: GetEngineInfo(EngineName=%s)\n", EngineName.c_str()));
524      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result;
525        try {
526            if ((EngineName == "GigEngine") || (EngineName == "gig")) {
527                Engine* pEngine = new LinuxSampler::gig::Engine;
528                result.Add("DESCRIPTION", pEngine->Description());
529                result.Add("VERSION",     pEngine->Version());
530                delete pEngine;
531            }
532            else throw LinuxSamplerException("Unknown engine type");
533        }
534        catch (LinuxSamplerException e) {
535             result.Error(e);
536        }
537        return result.Produce();
538  }  }
539    
540  /**  /**
541   * Will be called by the parser to get informations about a particular   * Will be called by the parser to get informations about a particular
542   * sampler channel.   * sampler channel.
543   */   */
544  String LSCPServer::GetChannelInfo(uint SamplerChannel) {  String LSCPServer::GetChannelInfo(uint uiSamplerChannel) {
545      dmsg(2,("LSCPServer: GetChannelInfo(SamplerChannel=%d)\n", SamplerChannel));      dmsg(2,("LSCPServer: GetChannelInfo(SamplerChannel=%d)\n", uiSamplerChannel));
546      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result;
547        try {
548            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
549            if (!pSamplerChannel) throw LinuxSamplerException("Index out of bounds");
550            Engine* pEngine = pSamplerChannel->GetEngine();
551    
552            //Defaults values
553            String EngineName = "NONE";
554            float Volume = 0.0f;
555            String InstrumentFileName = "NONE";
556            int InstrumentIndex = -1;
557            int InstrumentStatus = -1;
558            int AudioOutputChannels = 0;
559            String AudioRouting;
560    
561            if (pEngine) {
562                EngineName =  pEngine->EngineName();
563                AudioOutputChannels = pEngine->Channels();
564                Volume = pEngine->Volume();
565                InstrumentStatus = pEngine->InstrumentStatus();
566                InstrumentIndex = pEngine->InstrumentIndex();
567                if (InstrumentIndex != -1)
568                    InstrumentFileName = pEngine->InstrumentFileName();
569                for (int chan = 0; chan < pEngine->Channels(); chan++) {
570                    if (AudioRouting != "") AudioRouting += ",";
571                    AudioRouting += ToString(pEngine->OutputChannel(chan));
572                }
573            }
574    
575            result.Add("ENGINE_NAME", EngineName);
576            result.Add("VOLUME", Volume);
577    
578            //Some not-so-hardcoded stuff to make GUI look good
579            result.Add("AUDIO_OUTPUT_DEVICE", GetAudioOutputDeviceIndex(pSamplerChannel->GetAudioOutputDevice()));
580            result.Add("AUDIO_OUTPUT_CHANNELS", AudioOutputChannels);
581            result.Add("AUDIO_OUTPUT_ROUTING", AudioRouting);
582    
583            result.Add("MIDI_INPUT_DEVICE", GetMidiInputDeviceIndex(pSamplerChannel->GetMidiInputDevice()));
584            result.Add("MIDI_INPUT_PORT", pSamplerChannel->GetMidiInputPort());
585            if (pSamplerChannel->GetMidiInputChannel()) result.Add("MIDI_INPUT_CHANNEL", pSamplerChannel->GetMidiInputChannel());
586            else                                        result.Add("MIDI_INPUT_CHANNEL", "ALL");
587    
588            result.Add("INSTRUMENT_FILE", InstrumentFileName);
589            result.Add("INSTRUMENT_NR", InstrumentIndex);
590            result.Add("INSTRUMENT_STATUS", InstrumentStatus);
591        }
592        catch (LinuxSamplerException e) {
593             result.Error(e);
594        }
595        return result.Produce();
596  }  }
597    
598  /**  /**
599   * 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
600   * particular sampler channel.   * particular sampler channel.
601   */   */
602  String LSCPServer::GetVoiceCount(uint SamplerChannel) {  String LSCPServer::GetVoiceCount(uint uiSamplerChannel) {
603      dmsg(2,("LSCPServer: GetVoiceCount(SamplerChannel=%d)\n", SamplerChannel));      dmsg(2,("LSCPServer: GetVoiceCount(SamplerChannel=%d)\n", uiSamplerChannel));
604      return ToString(pEngine->ActiveVoiceCount) + "\r\n";      LSCPResultSet result;
605        try {
606            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
607            if (!pSamplerChannel) throw LinuxSamplerException("Index out of bounds");
608            Engine* pEngine = pSamplerChannel->GetEngine();
609            if (!pEngine) throw LinuxSamplerException("No engine loaded on channel");
610            result.Add(pEngine->VoiceCount());
611        }
612        catch (LinuxSamplerException e) {
613             result.Error(e);
614        }
615        return result.Produce();
616  }  }
617    
618  /**  /**
619   * 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
620   * particular sampler channel.   * particular sampler channel.
621   */   */
622  String LSCPServer::GetStreamCount(uint SamplerChannel) {  String LSCPServer::GetStreamCount(uint uiSamplerChannel) {
623      dmsg(2,("LSCPServer: GetStreamCount(SamplerChannel=%d)\n", SamplerChannel));      dmsg(2,("LSCPServer: GetStreamCount(SamplerChannel=%d)\n", uiSamplerChannel));
624      return ToString(pEngine->pDiskThread->ActiveStreamCount) + "\r\n";      LSCPResultSet result;
625        try {
626            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
627            if (!pSamplerChannel) throw LinuxSamplerException("Index out of bounds");
628            Engine* pEngine = pSamplerChannel->GetEngine();
629            if (!pEngine) throw LinuxSamplerException("No engine loaded on channel");
630            result.Add(pEngine->DiskStreamCount());
631        }
632        catch (LinuxSamplerException e) {
633             result.Error(e);
634        }
635        return result.Produce();
636  }  }
637    
638  /**  /**
639   * 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
640   * streams on a particular sampler channel.   * streams on a particular sampler channel.
641   */   */
642  String LSCPServer::GetBufferFill(fill_response_t ResponseType, uint SamplerChannel) {  String LSCPServer::GetBufferFill(fill_response_t ResponseType, uint uiSamplerChannel) {
643      dmsg(2,("LSCPServer: GetBufferFill(ResponseType=%d, SamplerChannel=%d)\n", ResponseType, SamplerChannel));      dmsg(2,("LSCPServer: GetBufferFill(ResponseType=%d, SamplerChannel=%d)\n", ResponseType, uiSamplerChannel));
644      return (ResponseType == fill_response_bytes) ? pEngine->pDiskThread->GetBufferFillBytes() + "\r\n"      LSCPResultSet result;
645                                                   : pEngine->pDiskThread->GetBufferFillPercentage() + "\r\n";      try {
646            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
647            if (!pSamplerChannel) throw LinuxSamplerException("Index out of bounds");
648            Engine* pEngine = pSamplerChannel->GetEngine();
649            if (!pEngine) throw LinuxSamplerException("No engine loaded on channel");
650            if (!pEngine->DiskStreamSupported())
651                result.Add("NA");
652            else {
653                switch (ResponseType) {
654                    case fill_response_bytes:
655                        result.Add(pEngine->DiskStreamBufferFillBytes());
656                        break;
657                    case fill_response_percentage:
658                        result.Add(pEngine->DiskStreamBufferFillPercentage());
659                        break;
660                    default:
661                        throw LinuxSamplerException("Unknown fill response type");
662                }
663            }
664        }
665        catch (LinuxSamplerException e) {
666             result.Error(e);
667        }
668        return result.Produce();
669  }  }
670    
671  /**  String LSCPServer::GetAvailableAudioOutputDrivers() {
672   * Will be called by the parser to change the audio output type on a      dmsg(2,("LSCPServer: GetAvailableAudioOutputDrivers()\n"));
673   * particular sampler channel.      LSCPResultSet result;
674   */      try {
675  String LSCPServer::SetAudioOutputType(audio_output_type_t AudioOutputType, uint SamplerChannel) {          String s = AudioOutputDeviceFactory::AvailableDriversAsString();
676      dmsg(2,("LSCPServer: SetAudioOutputType(AudioOutputType=%d, SamplerChannel=%d)\n", AudioOutputType, SamplerChannel));          result.Add(s);
677      return "ERR:0:Not implemented yet.\r\n";      }
678        catch (LinuxSamplerException e) {
679            result.Error(e);
680        }
681        return result.Produce();
682    }
683    
684    String LSCPServer::GetAvailableMidiInputDrivers() {
685        dmsg(2,("LSCPServer: GetAvailableMidiInputDrivers()\n"));
686        LSCPResultSet result;
687        try {
688            String s = MidiInputDeviceFactory::AvailableDriversAsString();
689            result.Add(s);
690        }
691        catch (LinuxSamplerException e) {
692            result.Error(e);
693        }
694        return result.Produce();
695    }
696    
697    String LSCPServer::GetMidiInputDriverInfo(String Driver) {
698        dmsg(2,("LSCPServer: GetMidiInputDriverInfo(Driver=%s)\n",Driver.c_str()));
699        LSCPResultSet result;
700        try {
701            result.Add("DESCRIPTION", MidiInputDeviceFactory::GetDriverDescription(Driver));
702            result.Add("VERSION",     MidiInputDeviceFactory::GetDriverVersion(Driver));
703    
704            std::map<String,DeviceCreationParameter*> parameters = MidiInputDeviceFactory::GetAvailableDriverParameters(Driver);
705            if (parameters.size()) { // if there are parameters defined for this driver
706                String s;
707                std::map<String,DeviceCreationParameter*>::iterator iter = parameters.begin();
708                for (;iter != parameters.end(); iter++) {
709                    if (s != "") s += ",";
710                    s += iter->first;
711                }
712                result.Add("PARAMETERS", s);
713            }
714        }
715        catch (LinuxSamplerException e) {
716            result.Error(e);
717        }
718        return result.Produce();
719    }
720    
721    String LSCPServer::GetAudioOutputDriverInfo(String Driver) {
722        dmsg(2,("LSCPServer: GetAudioOutputDriverInfo(Driver=%s)\n",Driver.c_str()));
723        LSCPResultSet result;
724        try {
725            result.Add("DESCRIPTION", AudioOutputDeviceFactory::GetDriverDescription(Driver));
726            result.Add("VERSION",     AudioOutputDeviceFactory::GetDriverVersion(Driver));
727    
728            std::map<String,DeviceCreationParameter*> parameters = AudioOutputDeviceFactory::GetAvailableDriverParameters(Driver);
729            if (parameters.size()) { // if there are parameters defined for this driver
730                String s;
731                std::map<String,DeviceCreationParameter*>::iterator iter = parameters.begin();
732                for (;iter != parameters.end(); iter++) {
733                    if (s != "") s += ",";
734                    s += iter->first;
735                }
736                result.Add("PARAMETERS", s);
737            }
738        }
739        catch (LinuxSamplerException e) {
740            result.Error(e);
741        }
742        return result.Produce();
743    }
744    
745    String LSCPServer::GetMidiInputDriverParameterInfo(String Driver, String Parameter, std::map<String,String> DependencyList) {
746        dmsg(2,("LSCPServer: GetMidiInputDriverParameterInfo(Driver=%s,Parameter=%s)\n",Driver.c_str(),Parameter.c_str()));
747        LSCPResultSet result;
748        try {
749            DeviceCreationParameter* pParameter = MidiInputDeviceFactory::GetDriverParameter(Driver, Parameter);
750            result.Add("TYPE",         pParameter->Type());
751            result.Add("DESCRIPTION",  pParameter->Description());
752            result.Add("MANDATORY",    pParameter->Mandatory());
753            result.Add("FIX",          pParameter->Fix());
754            result.Add("MULTIPLICITY", pParameter->Multiplicity());
755            if (pParameter->Depends())       result.Add("DEPENDS",       *pParameter->Depends());
756            if (pParameter->Default())       result.Add("DEFAULT",       *pParameter->Default());
757            if (pParameter->RangeMin())      result.Add("RANGE_MIN",     *pParameter->RangeMin());
758            if (pParameter->RangeMax())      result.Add("RANGE_MAX",     *pParameter->RangeMax());
759            if (pParameter->Possibilities()) result.Add("POSSIBILITIES", *pParameter->Possibilities());
760        }
761        catch (LinuxSamplerException e) {
762            result.Error(e);
763        }
764        return result.Produce();
765    }
766    
767    String LSCPServer::GetAudioOutputDriverParameterInfo(String Driver, String Parameter, std::map<String,String> DependencyList) {
768        dmsg(2,("LSCPServer: GetAudioOutputDriverParameterInfo(Driver=%s,Parameter=%s)\n",Driver.c_str(),Parameter.c_str()));
769        LSCPResultSet result;
770        try {
771            DeviceCreationParameter* pParameter = AudioOutputDeviceFactory::GetDriverParameter(Driver, Parameter);
772            result.Add("TYPE",         pParameter->Type());
773            result.Add("DESCRIPTION",  pParameter->Description());
774            result.Add("MANDATORY",    pParameter->Mandatory());
775            result.Add("FIX",          pParameter->Fix());
776            result.Add("MULTIPLICITY", pParameter->Multiplicity());
777            if (pParameter->Depends())       result.Add("DEPENDS",       *pParameter->Depends());
778            if (pParameter->Default())       result.Add("DEFAULT",       *pParameter->Default());
779            if (pParameter->RangeMin())      result.Add("RANGE_MIN",     *pParameter->RangeMin());
780            if (pParameter->RangeMax())      result.Add("RANGE_MAX",     *pParameter->RangeMax());
781            if (pParameter->Possibilities()) result.Add("POSSIBILITIES", *pParameter->Possibilities());
782        }
783        catch (LinuxSamplerException e) {
784            result.Error(e);
785        }
786        return result.Produce();
787    }
788    
789    String LSCPServer::GetAudioOutputDeviceCount() {
790        dmsg(2,("LSCPServer: GetAudioOutputDeviceCount()\n"));
791        LSCPResultSet result;
792        try {
793            uint count = pSampler->AudioOutputDevices();
794            result.Add(count); // success
795        }
796        catch (LinuxSamplerException e) {
797            result.Error(e);
798        }
799        return result.Produce();
800    }
801    
802    String LSCPServer::GetMidiInputDeviceCount() {
803        dmsg(2,("LSCPServer: GetMidiInputDeviceCount()\n"));
804        LSCPResultSet result;
805        try {
806            uint count = pSampler->MidiInputDevices();
807            result.Add(count); // success
808        }
809        catch (LinuxSamplerException e) {
810            result.Error(e);
811        }
812        return result.Produce();
813    }
814    
815    String LSCPServer::GetAudioOutputDevices() {
816        dmsg(2,("LSCPServer: GetAudioOutputDevices()\n"));
817        LSCPResultSet result;
818        try {
819            String s;
820            std::map<uint, AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
821            std::map<uint, AudioOutputDevice*>::iterator iter = devices.begin();
822            for (; iter != devices.end(); iter++) {
823                if (s != "") s += ",";
824                s += ToString(iter->first);
825            }
826            result.Add(s);
827        }
828        catch (LinuxSamplerException e) {
829            result.Error(e);
830        }
831        return result.Produce();
832    }
833    
834    String LSCPServer::GetMidiInputDevices() {
835        dmsg(2,("LSCPServer: GetMidiInputDevices()\n"));
836        LSCPResultSet result;
837        try {
838            String s;
839            std::map<uint, MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
840            std::map<uint, MidiInputDevice*>::iterator iter = devices.begin();
841            for (; iter != devices.end(); iter++) {
842                if (s != "") s += ",";
843                s += ToString(iter->first);
844            }
845            result.Add(s);
846        }
847        catch (LinuxSamplerException e) {
848            result.Error(e);
849        }
850        return result.Produce();
851    }
852    
853    String LSCPServer::GetAudioOutputDeviceInfo(uint DeviceIndex) {
854        dmsg(2,("LSCPServer: GetAudioOutputDeviceInfo(DeviceIndex=%d)\n",DeviceIndex));
855        LSCPResultSet result;
856        try {
857            std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
858            if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceIndex) + ".");
859            AudioOutputDevice* pDevice = devices[DeviceIndex];
860            result.Add("DRIVER", pDevice->Driver());
861            std::map<String,DeviceCreationParameter*> parameters = pDevice->DeviceParameters();
862            std::map<String,DeviceCreationParameter*>::iterator iter = parameters.begin();
863            for (; iter != parameters.end(); iter++) {
864                result.Add(iter->first, iter->second->Value());
865            }
866        }
867        catch (LinuxSamplerException e) {
868            result.Error(e);
869        }
870        return result.Produce();
871    }
872    
873    String LSCPServer::GetMidiInputDeviceInfo(uint DeviceIndex) {
874        dmsg(2,("LSCPServer: GetMidiInputDeviceInfo(DeviceIndex=%d)\n",DeviceIndex));
875        LSCPResultSet result;
876        try {
877            std::map<uint,MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
878            if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(DeviceIndex) + ".");
879            MidiInputDevice* pDevice = devices[DeviceIndex];
880            result.Add("DRIVER", pDevice->Driver());
881            std::map<String,DeviceCreationParameter*> parameters = pDevice->DeviceParameters();
882            std::map<String,DeviceCreationParameter*>::iterator iter = parameters.begin();
883            for (; iter != parameters.end(); iter++) {
884                result.Add(iter->first, iter->second->Value());
885            }
886        }
887        catch (LinuxSamplerException e) {
888            result.Error(e);
889        }
890        return result.Produce();
891    }
892    String LSCPServer::GetMidiInputPortInfo(uint DeviceIndex, uint PortIndex) {
893        dmsg(2,("LSCPServer: GetMidiInputPortInfo(DeviceIndex=%d, PortIndex=%d)\n",DeviceIndex, PortIndex));
894        LSCPResultSet result;
895        try {
896            // get MIDI input device
897            std::map<uint,MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
898            if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(DeviceIndex) + ".");
899            MidiInputDevice* pDevice = devices[DeviceIndex];
900    
901            // get MIDI port
902            MidiInputPort* pMidiInputPort = pDevice->GetPort(PortIndex);
903            if (!pMidiInputPort) throw LinuxSamplerException("There is no MIDI input port with index " + ToString(PortIndex) + ".");
904    
905            // return the values of all MIDI port parameters
906            std::map<String,DeviceRuntimeParameter*> parameters = pMidiInputPort->PortParameters();
907            std::map<String,DeviceRuntimeParameter*>::iterator iter = parameters.begin();
908            for (; iter != parameters.end(); iter++) {
909                result.Add(iter->first, iter->second->Value());
910            }
911        }
912        catch (LinuxSamplerException e) {
913            result.Error(e);
914        }
915        return result.Produce();
916    }
917    
918    String LSCPServer::GetAudioOutputChannelInfo(uint DeviceId, uint ChannelId) {
919        dmsg(2,("LSCPServer: GetAudioOutputChannelInfo(DeviceId=%d,ChannelId)\n",DeviceId,ChannelId));
920        LSCPResultSet result;
921        try {
922            // get audio output device
923            std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
924            if (!devices.count(DeviceId)) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceId) + ".");
925            AudioOutputDevice* pDevice = devices[DeviceId];
926    
927            // get audio channel
928            AudioChannel* pChannel = pDevice->Channel(ChannelId);
929            if (!pChannel) throw LinuxSamplerException("Audio ouotput device does not have channel " + ToString(ChannelId) + ".");
930    
931            // return the values of all audio channel parameters
932            std::map<String,DeviceRuntimeParameter*> parameters = pChannel->ChannelParameters();
933            std::map<String,DeviceRuntimeParameter*>::iterator iter = parameters.begin();
934            for (; iter != parameters.end(); iter++) {
935                result.Add(iter->first, iter->second->Value());
936            }
937        }
938        catch (LinuxSamplerException e) {
939            result.Error(e);
940        }
941        return result.Produce();
942    }
943    
944    String LSCPServer::GetMidiInputPortParameterInfo(uint DeviceId, uint PortId, String ParameterName) {
945        dmsg(2,("LSCPServer: GetMidiInputPortParameterInfo(DeviceId=%d,PortId=%d,ParameterName=%s)\n",DeviceId,PortId,ParameterName.c_str()));
946        LSCPResultSet result;
947        try {
948            // get MIDI input device
949            std::map<uint,MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
950            if (!devices.count(DeviceId)) throw LinuxSamplerException("There is no midi input device with index " + ToString(DeviceId) + ".");
951            MidiInputDevice* pDevice = devices[DeviceId];
952    
953            // get midi port
954            MidiInputPort* pPort = pDevice->GetPort(PortId);
955            if (!pPort) throw LinuxSamplerException("Midi input device does not have port " + ToString(PortId) + ".");
956    
957            // get desired port parameter
958            std::map<String,DeviceRuntimeParameter*> parameters = pPort->PortParameters();
959            if (!parameters.count(ParameterName)) throw LinuxSamplerException("Midi port does not provide a parameter '" + ParameterName + "'.");
960            DeviceRuntimeParameter* pParameter = parameters[ParameterName];
961    
962            // return all fields of this audio channel parameter
963            result.Add("TYPE",         pParameter->Type());
964            result.Add("DESCRIPTION",  pParameter->Description());
965            result.Add("FIX",          pParameter->Fix());
966            result.Add("MULTIPLICITY", pParameter->Multiplicity());
967            if (pParameter->RangeMin())      result.Add("RANGE_MIN",     *pParameter->RangeMin());
968            if (pParameter->RangeMax())      result.Add("RANGE_MAX",     *pParameter->RangeMax());
969            if (pParameter->Possibilities()) result.Add("POSSIBILITIES", *pParameter->Possibilities());
970        }
971        catch (LinuxSamplerException e) {
972            result.Error(e);
973        }
974        return result.Produce();
975    }
976    
977    String LSCPServer::GetAudioOutputChannelParameterInfo(uint DeviceId, uint ChannelId, String ParameterName) {
978        dmsg(2,("LSCPServer: GetAudioOutputChannelParameterInfo(DeviceId=%d,ChannelId=%d,ParameterName=%s)\n",DeviceId,ChannelId,ParameterName.c_str()));
979        LSCPResultSet result;
980        try {
981            // get audio output device
982            std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
983            if (!devices.count(DeviceId)) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceId) + ".");
984            AudioOutputDevice* pDevice = devices[DeviceId];
985    
986            // get audio channel
987            AudioChannel* pChannel = pDevice->Channel(ChannelId);
988            if (!pChannel) throw LinuxSamplerException("Audio output device does not have channel " + ToString(ChannelId) + ".");
989    
990            // get desired audio channel parameter
991            std::map<String,DeviceRuntimeParameter*> parameters = pChannel->ChannelParameters();
992            if (!parameters.count(ParameterName)) throw LinuxSamplerException("Audio channel does not provide a parameter '" + ParameterName + "'.");
993            DeviceRuntimeParameter* pParameter = parameters[ParameterName];
994    
995            // return all fields of this audio channel parameter
996            result.Add("TYPE",         pParameter->Type());
997            result.Add("DESCRIPTION",  pParameter->Description());
998            result.Add("FIX",          pParameter->Fix());
999            result.Add("MULTIPLICITY", pParameter->Multiplicity());
1000            if (pParameter->RangeMin())      result.Add("RANGE_MIN",     *pParameter->RangeMin());
1001            if (pParameter->RangeMax())      result.Add("RANGE_MAX",     *pParameter->RangeMax());
1002            if (pParameter->Possibilities()) result.Add("POSSIBILITIES", *pParameter->Possibilities());
1003        }
1004        catch (LinuxSamplerException e) {
1005            result.Error(e);
1006        }
1007        return result.Produce();
1008    }
1009    
1010    String LSCPServer::SetAudioOutputChannelParameter(uint DeviceId, uint ChannelId, String ParamKey, String ParamVal) {
1011        dmsg(2,("LSCPServer: SetAudioOutputChannelParameter(DeviceId=%d,ChannelId=%d,ParamKey=%s,ParamVal=%s)\n",DeviceId,ChannelId,ParamKey.c_str(),ParamVal.c_str()));
1012        LSCPResultSet result;
1013        try {
1014            // get audio output device
1015            std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
1016            if (!devices.count(DeviceId)) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceId) + ".");
1017            AudioOutputDevice* pDevice = devices[DeviceId];
1018    
1019            // get audio channel
1020            AudioChannel* pChannel = pDevice->Channel(ChannelId);
1021            if (!pChannel) throw LinuxSamplerException("Audio output device does not have channel " + ToString(ChannelId) + ".");
1022    
1023            // get desired audio channel parameter
1024            std::map<String,DeviceRuntimeParameter*> parameters = pChannel->ChannelParameters();
1025            if (!parameters.count(ParamKey)) throw LinuxSamplerException("Audio channel does not provide a parameter '" + ParamKey + "'.");
1026            DeviceRuntimeParameter* pParameter = parameters[ParamKey];
1027    
1028            // set new channel parameter value
1029            pParameter->SetValue(ParamVal);
1030        }
1031        catch (LinuxSamplerException e) {
1032            result.Error(e);
1033        }
1034        return result.Produce();
1035    }
1036    
1037    String LSCPServer::SetAudioOutputDeviceParameter(uint DeviceIndex, String ParamKey, String ParamVal) {
1038        dmsg(2,("LSCPServer: SetAudioOutputDeviceParameter(DeviceIndex=%d,ParamKey=%s,ParamVal=%s)\n",DeviceIndex,ParamKey.c_str(),ParamVal.c_str()));
1039        LSCPResultSet result;
1040        try {
1041            std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
1042            if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceIndex) + ".");
1043            AudioOutputDevice* pDevice = devices[DeviceIndex];
1044            std::map<String,DeviceCreationParameter*> parameters = pDevice->DeviceParameters();
1045            if (!parameters.count(ParamKey)) throw LinuxSamplerException("Audio output device " + ToString(DeviceIndex) + " does not have a device parameter '" + ParamKey + "'");
1046            parameters[ParamKey]->SetValue(ParamVal);
1047        }
1048        catch (LinuxSamplerException e) {
1049            result.Error(e);
1050        }
1051        return result.Produce();
1052    }
1053    
1054    String LSCPServer::SetMidiInputDeviceParameter(uint DeviceIndex, String ParamKey, String ParamVal) {
1055        dmsg(2,("LSCPServer: SetMidiOutputDeviceParameter(DeviceIndex=%d,ParamKey=%s,ParamVal=%s)\n",DeviceIndex,ParamKey.c_str(),ParamVal.c_str()));
1056        LSCPResultSet result;
1057        try {
1058            std::map<uint,MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
1059            if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(DeviceIndex) + ".");
1060            MidiInputDevice* pDevice = devices[DeviceIndex];
1061            std::map<String,DeviceCreationParameter*> parameters = pDevice->DeviceParameters();
1062            if (!parameters.count(ParamKey)) throw LinuxSamplerException("MIDI input device " + ToString(DeviceIndex) + " does not have a device parameter '" + ParamKey + "'");
1063            parameters[ParamKey]->SetValue(ParamVal);
1064        }
1065        catch (LinuxSamplerException e) {
1066            result.Error(e);
1067        }
1068        return result.Produce();
1069    }
1070    
1071    String LSCPServer::SetMidiInputPortParameter(uint DeviceIndex, uint PortIndex, String ParamKey, String ParamVal) {
1072        dmsg(2,("LSCPServer: SetMidiOutputDeviceParameter(DeviceIndex=%d,ParamKey=%s,ParamVal=%s)\n",DeviceIndex,ParamKey.c_str(),ParamVal.c_str()));
1073        LSCPResultSet result;
1074        try {
1075            // get MIDI input device
1076            std::map<uint,MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
1077            if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(DeviceIndex) + ".");
1078            MidiInputDevice* pDevice = devices[DeviceIndex];
1079    
1080            // get MIDI port
1081            MidiInputPort* pMidiInputPort = pDevice->GetPort(PortIndex);
1082            if (!pMidiInputPort) throw LinuxSamplerException("There is no MIDI input port with index " + ToString(PortIndex) + ".");
1083    
1084            // set port parameter value
1085            std::map<String,DeviceRuntimeParameter*> parameters = pMidiInputPort->PortParameters();
1086            if (!parameters.count(ParamKey)) throw LinuxSamplerException("MIDI input device " + ToString(PortIndex) + " does not have a parameter '" + ParamKey + "'");
1087            parameters[ParamKey]->SetValue(ParamVal);
1088        }
1089        catch (LinuxSamplerException e) {
1090            result.Error(e);
1091        }
1092        return result.Produce();
1093  }  }
1094    
1095  /**  /**
1096   * 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
1097   * playback on a particular sampler channel.   * playback on a particular sampler channel.
1098   */   */
1099  String LSCPServer::SetAudioOutputChannel(uint AudioOutputChannel, uint SamplerChannel) {  String LSCPServer::SetAudioOutputChannel(uint ChannelAudioOutputChannel, uint AudioOutputDeviceInputChannel, uint uiSamplerChannel) {
1100      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));
1101      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result;
1102        try {
1103            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1104            if (!pSamplerChannel) throw LinuxSamplerException("Invalid channel number " + ToString(uiSamplerChannel));
1105            Engine* pEngine = pSamplerChannel->GetEngine();
1106            if (!pEngine) throw LinuxSamplerException("No engine deployed on sampler channel " + ToString(uiSamplerChannel));
1107            pEngine->SetOutputChannel(ChannelAudioOutputChannel, AudioOutputDeviceInputChannel);
1108        }
1109        catch (LinuxSamplerException e) {
1110             result.Error(e);
1111        }
1112        return result.Produce();
1113  }  }
1114    
1115  /**  String LSCPServer::SetAudioOutputDevice(uint AudioDeviceId, uint uiSamplerChannel) {
1116   * 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));
1117   * engine of a particular sampler channel should listen to.      LSCPResultSet result;
1118   */      try {
1119  String LSCPServer::SetMIDIInputPort(String MIDIInputPort, uint Samplerchannel) {          SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1120      dmsg(2,("LSCPServer: SetMIDIInputPort(MIDIInputPort=%s, Samplerchannel=%d)\n", MIDIInputPort.c_str(), Samplerchannel));          if (!pSamplerChannel) throw LinuxSamplerException("Invalid channel number " + ToString(uiSamplerChannel));
1121      return "ERR:0:Not implemented yet.\r\n";          std::map<uint, AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
1122            if (!devices.count(AudioDeviceId)) throw LinuxSamplerException("There is no audio output device with index " + ToString(AudioDeviceId));
1123            AudioOutputDevice* pDevice = devices[AudioDeviceId];
1124            pSamplerChannel->SetAudioOutputDevice(pDevice);
1125        }
1126        catch (LinuxSamplerException e) {
1127             result.Error(e);
1128        }
1129        return result.Produce();
1130    }
1131    
1132    String LSCPServer::SetAudioOutputType(String AudioOutputDriver, uint uiSamplerChannel) {
1133        dmsg(2,("LSCPServer: SetAudioOutputType(String AudioOutputDriver=%s, SamplerChannel=%d)\n",AudioOutputDriver.c_str(),uiSamplerChannel));
1134        LSCPResultSet result;
1135        try {
1136            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1137            if (!pSamplerChannel) throw LinuxSamplerException("Invalid channel number " + ToString(uiSamplerChannel));
1138            // Driver type name aliasing...
1139            if (AudioOutputDriver == "ALSA") AudioOutputDriver = "Alsa";
1140            if (AudioOutputDriver == "JACK") AudioOutputDriver = "Jack";
1141            // Check if there's one audio output device already created
1142            // for the intended audio driver type (AudioOutputDriver)...
1143            AudioOutputDevice *pDevice = NULL;
1144            std::map<uint, AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
1145            std::map<uint, AudioOutputDevice*>::iterator iter = devices.begin();
1146            for (; iter != devices.end(); iter++) {
1147                if ((iter->second)->Driver() == AudioOutputDriver) {
1148                    pDevice = iter->second;
1149                    break;
1150                }
1151            }
1152            // If it doesn't exist, create a new one with default parameters...
1153            if (pDevice == NULL) {
1154                std::map<String,String> params;
1155                pDevice = pSampler->CreateAudioOutputDevice(AudioOutputDriver, params);
1156            }
1157            // Must have a device...
1158            if (pDevice == NULL)
1159                throw LinuxSamplerException("Internal error: could not create audio output device.");
1160            // Set it as the current channel device...
1161            pSamplerChannel->SetAudioOutputDevice(pDevice);
1162        }
1163        catch (LinuxSamplerException e) {
1164             result.Error(e);
1165        }
1166        return result.Produce();
1167    }
1168    
1169    String LSCPServer::SetMIDIInputPort(uint MIDIPort, uint uiSamplerChannel) {
1170        dmsg(2,("LSCPServer: SetMIDIInputPort(MIDIPort=%d, SamplerChannel=%d)\n",MIDIPort,uiSamplerChannel));
1171        LSCPResultSet result;
1172        try {
1173            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1174            if (!pSamplerChannel) throw LinuxSamplerException("Invalid channel number " + ToString(uiSamplerChannel));
1175            pSamplerChannel->SetMidiInputPort(MIDIPort);
1176        }
1177        catch (LinuxSamplerException e) {
1178             result.Error(e);
1179        }
1180        return result.Produce();
1181    }
1182    
1183    String LSCPServer::SetMIDIInputChannel(uint MIDIChannel, uint uiSamplerChannel) {
1184        dmsg(2,("LSCPServer: SetMIDIInputChannel(MIDIChannel=%d, SamplerChannel=%d)\n",MIDIChannel,uiSamplerChannel));
1185        LSCPResultSet result;
1186        try {
1187            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1188            if (!pSamplerChannel) throw LinuxSamplerException("Invalid channel number " + ToString(uiSamplerChannel));
1189            pSamplerChannel->SetMidiInputChannel((MidiInputPort::midi_chan_t) MIDIChannel);
1190        }
1191        catch (LinuxSamplerException e) {
1192             result.Error(e);
1193        }
1194        return result.Produce();
1195    }
1196    
1197    String LSCPServer::SetMIDIInputDevice(uint MIDIDeviceId, uint uiSamplerChannel) {
1198        dmsg(2,("LSCPServer: SetMIDIInputDevice(MIDIDeviceId=%d, SamplerChannel=%d)\n",MIDIDeviceId,uiSamplerChannel));
1199        LSCPResultSet result;
1200        try {
1201            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1202            if (!pSamplerChannel) throw LinuxSamplerException("Invalid channel number " + ToString(uiSamplerChannel));
1203            std::map<uint, MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
1204            if (!devices.count(MIDIDeviceId)) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(MIDIDeviceId));
1205            MidiInputDevice* pDevice = devices[MIDIDeviceId];
1206            pSamplerChannel->SetMidiInputDevice(pDevice);
1207        }
1208        catch (LinuxSamplerException e) {
1209             result.Error(e);
1210        }
1211        return result.Produce();
1212    }
1213    
1214    String LSCPServer::SetMIDIInputType(String MidiInputDriver, uint uiSamplerChannel) {
1215        dmsg(2,("LSCPServer: SetMIDIInputType(String MidiInputDriver=%s, SamplerChannel=%d)\n",MidiInputDriver.c_str(),uiSamplerChannel));
1216        LSCPResultSet result;
1217        try {
1218            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1219            if (!pSamplerChannel) throw LinuxSamplerException("Invalid channel number " + ToString(uiSamplerChannel));
1220            // Driver type name aliasing...
1221            if (MidiInputDriver == "ALSA") MidiInputDriver = "Alsa";
1222            // Check if there's one MIDI input device already created
1223            // for the intended MIDI driver type (MidiInputDriver)...
1224            MidiInputDevice *pDevice = NULL;
1225            std::map<uint, MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
1226            std::map<uint, MidiInputDevice*>::iterator iter = devices.begin();
1227            for (; iter != devices.end(); iter++) {
1228                if ((iter->second)->Driver() == MidiInputDriver) {
1229                    pDevice = iter->second;
1230                    break;
1231                }
1232            }
1233            // If it doesn't exist, create a new one with default parameters...
1234            if (pDevice == NULL) {
1235                std::map<String,String> params;
1236                pDevice = pSampler->CreateMidiInputDevice(MidiInputDriver, params);
1237                // Make it with at least one initial port.
1238                std::map<String,DeviceCreationParameter*> parameters = pDevice->DeviceParameters();
1239                parameters["PORTS"]->SetValue("1");
1240            }
1241            // Must have a device...
1242            if (pDevice == NULL)
1243                throw LinuxSamplerException("Internal error: could not create MIDI input device.");
1244            // Set it as the current channel device...
1245            pSamplerChannel->SetMidiInputDevice(pDevice);
1246        }
1247        catch (LinuxSamplerException e) {
1248             result.Error(e);
1249        }
1250        return result.Produce();
1251  }  }
1252    
1253  /**  /**
1254   * 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
1255   * engine of a particular sampler channel should listen to.   * engine of a particular sampler channel should listen to.
1256   */   */
1257  String LSCPServer::SetMIDIInputChannel(uint MIDIChannel, uint SamplerChannel) {  String LSCPServer::SetMIDIInput(uint MIDIDeviceId, uint MIDIPort, uint MIDIChannel, uint uiSamplerChannel) {
1258      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));
1259      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result;
1260        try {
1261            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1262            if (!pSamplerChannel) throw LinuxSamplerException("Invalid channel number " + ToString(uiSamplerChannel));
1263            std::map<uint, MidiInputDevice*> devices =  pSampler->GetMidiInputDevices();
1264            if (!devices.count(MIDIDeviceId)) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(MIDIDeviceId));
1265            MidiInputDevice* pDevice = devices[MIDIDeviceId];
1266            pSamplerChannel->SetMidiInput(pDevice, MIDIPort, (MidiInputPort::midi_chan_t) MIDIChannel);
1267        }
1268        catch (LinuxSamplerException e) {
1269             result.Error(e);
1270        }
1271        return result.Produce();
1272  }  }
1273    
1274  /**  /**
1275   * 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
1276   * particular sampler channel.   * particular sampler channel.
1277   */   */
1278  String LSCPServer::SetVolume(double Volume, uint SamplerChannel) {  String LSCPServer::SetVolume(double dVolume, uint uiSamplerChannel) {
1279      dmsg(2,("LSCPServer: SetVolume(Volume=%f, SamplerChannel=%d)\n", Volume, SamplerChannel));      dmsg(2,("LSCPServer: SetVolume(Volume=%f, SamplerChannel=%d)\n", dVolume, uiSamplerChannel));
1280      pEngine->Volume = Volume;      LSCPResultSet result;
1281      return "OK\r\n";      try {
1282            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1283            if (!pSamplerChannel) throw LinuxSamplerException("Index out of bounds");
1284            Engine* pEngine = pSamplerChannel->GetEngine();
1285            if (!pEngine) throw LinuxSamplerException("No engine loaded on channel");
1286            pEngine->Volume(dVolume);
1287        }
1288        catch (LinuxSamplerException e) {
1289             result.Error(e);
1290        }
1291        return result.Produce();
1292  }  }
1293    
1294  /**  /**
1295   * Will be called by the parser to reset a particular sampler channel.   * Will be called by the parser to reset a particular sampler channel.
1296   */   */
1297  String LSCPServer::ResetChannel(uint SamplerChannel) {  String LSCPServer::ResetChannel(uint uiSamplerChannel) {
1298      dmsg(2,("LSCPServer: ResetChannel(SamplerChannel=%d)\n", SamplerChannel));      dmsg(2,("LSCPServer: ResetChannel(SamplerChannel=%d)\n", uiSamplerChannel));
1299      pEngine->Reset();      LSCPResultSet result;
1300      return "OK\r\n";      try {
1301            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1302            if (!pSamplerChannel) throw LinuxSamplerException("Index out of bounds");
1303            Engine* pEngine = pSamplerChannel->GetEngine();
1304            if (!pEngine) throw LinuxSamplerException("No engine loaded on channel");
1305            pEngine->Reset();
1306        }
1307        catch (LinuxSamplerException e) {
1308             result.Error(e);
1309        }
1310        return result.Produce();
1311    }
1312    
1313    /**
1314     * Will be called by the parser to reset the whole sampler.
1315     */
1316    String LSCPServer::ResetSampler() {
1317        dmsg(2,("LSCPServer: ResetSampler()\n"));
1318        pSampler->Reset();
1319        LSCPResultSet result;
1320        return result.Produce();
1321  }  }
1322    
1323  /**  /**
1324   * 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
1325   * server for receiving event messages.   * server for receiving event messages.
1326   */   */
1327  String LSCPServer::SubscribeNotification(uint UDPPort) {  String LSCPServer::SubscribeNotification(LSCPEvent::event_t type) {
1328      dmsg(2,("LSCPServer: SubscribeNotification(UDPPort=%d)\n", UDPPort));      dmsg(2,("LSCPServer: SubscribeNotification(Event=%s)\n", LSCPEvent::Name(type).c_str()));
1329      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result;
1330        SubscriptionMutex.Lock();
1331        eventSubscriptions[type].push_back(currentSocket);
1332        SubscriptionMutex.Unlock();
1333        return result.Produce();
1334  }  }
1335    
1336  /**  /**
1337   * 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
1338   * for not receiving further event messages.   * for not receiving further event messages.
1339   */   */
1340  String LSCPServer::UnsubscribeNotification(String SessionID) {  String LSCPServer::UnsubscribeNotification(LSCPEvent::event_t type) {
1341      dmsg(2,("LSCPServer: UnsubscribeNotification(SessionID=%s)\n", SessionID.c_str()));      dmsg(2,("LSCPServer: UnsubscribeNotification(Event=%s)\n", LSCPEvent::Name(type).c_str()));
1342      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result;
1343        SubscriptionMutex.Lock();
1344        eventSubscriptions[type].remove(currentSocket);
1345        SubscriptionMutex.Unlock();
1346        return result.Produce();
1347    }
1348    
1349    /**
1350     * Will be called by the parser to enable or disable echo mode; if echo
1351     * mode is enabled, all commands from the client will (immediately) be
1352     * echoed back to the client.
1353     */
1354    String LSCPServer::SetEcho(yyparse_param_t* pSession, double boolean_value) {
1355        dmsg(2,("LSCPServer: SetEcho(val=%f)\n", boolean_value));
1356        LSCPResultSet result;
1357        try {
1358            if      (boolean_value == 0) pSession->bVerbose = false;
1359            else if (boolean_value == 1) pSession->bVerbose = true;
1360            else throw LinuxSamplerException("Not a boolean value, must either be 0 or 1");
1361        }
1362        catch (LinuxSamplerException e) {
1363             result.Error(e);
1364        }
1365        return result.Produce();
1366    }
1367    
1368    // Instrument loader constructor.
1369    LSCPLoadInstrument::LSCPLoadInstrument(Engine* pEngine, String Filename, uint uiInstrument)
1370        : Thread(false, 0, -4)
1371    {
1372        this->pEngine = pEngine;
1373        this->Filename = Filename;
1374        this->uiInstrument = uiInstrument;
1375    }
1376    
1377    // Instrument loader process.
1378    int LSCPLoadInstrument::Main()
1379    {
1380        try {
1381            pEngine->LoadInstrument(Filename.c_str(), uiInstrument);
1382        }
1383    
1384        catch (LinuxSamplerException e) {
1385            e.PrintMessage();
1386        }
1387    
1388        // Always re-enable the engine.
1389        pEngine->Enable();
1390    
1391        // FIXME: Shoot ourselves on the foot?
1392        delete this;
1393  }  }
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