/[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 221 by schoenebeck, Fri Aug 20 17:25:19 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[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            MidiInputDevice* pDevice = devices[DeviceIndex];
409            if (!pDevice) throw LinuxSamplerException("There is no audio output device with index " + ToString(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() == NULL)
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(pEngine->Description());
529                result.Add(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;
555            String InstrumentFileName = "NONE";
556            int InstrumentIndex = -1;
557            int InstrumentStatus = -1;
558    
559            if (pEngine) {
560                EngineName =  pEngine->EngineName();
561                Volume = pEngine->Volume();
562                InstrumentStatus = pEngine->InstrumentStatus();
563                InstrumentIndex = pEngine->InstrumentIndex();
564                if (InstrumentIndex != -1)
565                    InstrumentFileName = pEngine->InstrumentFileName();
566            }
567    
568            result.Add("ENGINE_NAME", EngineName);
569            result.Add("VOLUME", Volume);
570    
571            //Some not-so-hardcoded stuff to make GUI look good
572            result.Add("AUDIO_OUTPUT_DEVICE", GetAudioOutputDeviceIndex(pSamplerChannel->GetAudioOutputDevice()));
573            result.Add("AUDIO_OUTPUT_CHANNELS", "2");
574            result.Add("AUDIO_OUTPUT_ROUTING", "0,1");
575    
576            result.Add("MIDI_INPUT_DEVICE", GetMidiInputDeviceIndex(pSamplerChannel->GetMidiInputDevice()));
577            result.Add("MIDI_INPUT_PORT", pSamplerChannel->GetMidiInputPort());
578            result.Add("MIDI_INPUT_CHANNEL", pSamplerChannel->GetMidiInputChannel());
579    
580            result.Add("INSTRUMENT_FILE", InstrumentFileName);
581            result.Add("INSTRUMENT_NR", InstrumentIndex);
582            result.Add("INSTRUMENT_STATUS", InstrumentStatus);
583        }
584        catch (LinuxSamplerException e) {
585             result.Error(e);
586        }
587        return result.Produce();
588  }  }
589    
590  /**  /**
591   * 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
592   * particular sampler channel.   * particular sampler channel.
593   */   */
594  String LSCPServer::GetVoiceCount(uint SamplerChannel) {  String LSCPServer::GetVoiceCount(uint uiSamplerChannel) {
595      dmsg(2,("LSCPServer: GetVoiceCount(SamplerChannel=%d)\n", SamplerChannel));      dmsg(2,("LSCPServer: GetVoiceCount(SamplerChannel=%d)\n", uiSamplerChannel));
596      return ToString(pEngine->ActiveVoiceCount) + "\r\n";      LSCPResultSet result;
597        try {
598            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
599            if (!pSamplerChannel) throw LinuxSamplerException("Index out of bounds");
600            Engine* pEngine = pSamplerChannel->GetEngine();
601            if (!pEngine) throw LinuxSamplerException("No engine loaded on channel");
602            result.Add(pEngine->VoiceCount());
603        }
604        catch (LinuxSamplerException e) {
605             result.Error(e);
606        }
607        return result.Produce();
608  }  }
609    
610  /**  /**
611   * 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
612   * particular sampler channel.   * particular sampler channel.
613   */   */
614  String LSCPServer::GetStreamCount(uint SamplerChannel) {  String LSCPServer::GetStreamCount(uint uiSamplerChannel) {
615      dmsg(2,("LSCPServer: GetStreamCount(SamplerChannel=%d)\n", SamplerChannel));      dmsg(2,("LSCPServer: GetStreamCount(SamplerChannel=%d)\n", uiSamplerChannel));
616      return ToString(pEngine->pDiskThread->ActiveStreamCount) + "\r\n";      LSCPResultSet result;
617        try {
618            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
619            if (!pSamplerChannel) throw LinuxSamplerException("Index out of bounds");
620            Engine* pEngine = pSamplerChannel->GetEngine();
621            if (!pEngine) throw LinuxSamplerException("No engine loaded on channel");
622            result.Add(pEngine->DiskStreamCount());
623        }
624        catch (LinuxSamplerException e) {
625             result.Error(e);
626        }
627        return result.Produce();
628  }  }
629    
630  /**  /**
631   * 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
632   * streams on a particular sampler channel.   * streams on a particular sampler channel.
633   */   */
634  String LSCPServer::GetBufferFill(fill_response_t ResponseType, uint SamplerChannel) {  String LSCPServer::GetBufferFill(fill_response_t ResponseType, uint uiSamplerChannel) {
635      dmsg(2,("LSCPServer: GetBufferFill(ResponseType=%d, SamplerChannel=%d)\n", ResponseType, SamplerChannel));      dmsg(2,("LSCPServer: GetBufferFill(ResponseType=%d, SamplerChannel=%d)\n", ResponseType, uiSamplerChannel));
636      return (ResponseType == fill_response_bytes) ? pEngine->pDiskThread->GetBufferFillBytes() + "\r\n"      LSCPResultSet result;
637                                                   : pEngine->pDiskThread->GetBufferFillPercentage() + "\r\n";      try {
638            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
639            if (!pSamplerChannel) throw LinuxSamplerException("Index out of bounds");
640            Engine* pEngine = pSamplerChannel->GetEngine();
641            if (!pEngine) throw LinuxSamplerException("No engine loaded on channel");
642            if (!pEngine->DiskStreamSupported())
643                result.Add("NA");
644            else {
645                switch (ResponseType) {
646                    case fill_response_bytes:
647                        result.Add(pEngine->DiskStreamBufferFillBytes());
648                        break;
649                    case fill_response_percentage:
650                        result.Add(pEngine->DiskStreamBufferFillPercentage());
651                        break;
652                    default:
653                        throw LinuxSamplerException("Unknown fill response type");
654                }
655            }
656        }
657        catch (LinuxSamplerException e) {
658             result.Error(e);
659        }
660        return result.Produce();
661  }  }
662    
663  /**  String LSCPServer::GetAvailableAudioOutputDrivers() {
664   * Will be called by the parser to change the audio output type on a      dmsg(2,("LSCPServer: GetAvailableAudioOutputDrivers()\n"));
665   * particular sampler channel.      LSCPResultSet result;
666   */      try {
667  String LSCPServer::SetAudioOutputType(audio_output_type_t AudioOutputType, uint SamplerChannel) {          String s = AudioOutputDeviceFactory::AvailableDriversAsString();
668      dmsg(2,("LSCPServer: SetAudioOutputType(AudioOutputType=%d, SamplerChannel=%d)\n", AudioOutputType, SamplerChannel));          result.Add(s);
669      return "ERR:0:Not implemented yet.\r\n";      }
670        catch (LinuxSamplerException e) {
671            result.Error(e);
672        }
673        return result.Produce();
674    }
675    
676    String LSCPServer::GetAvailableMidiInputDrivers() {
677        dmsg(2,("LSCPServer: GetAvailableMidiInputDrivers()\n"));
678        LSCPResultSet result;
679        try {
680            String s = MidiInputDeviceFactory::AvailableDriversAsString();
681            result.Add(s);
682        }
683        catch (LinuxSamplerException e) {
684            result.Error(e);
685        }
686        return result.Produce();
687    }
688    
689    String LSCPServer::GetMidiInputDriverInfo(String Driver) {
690        dmsg(2,("LSCPServer: GetMidiInputDriverInfo(Driver=%s)\n",Driver.c_str()));
691        LSCPResultSet result;
692        try {
693            result.Add("DESCRIPTION", MidiInputDeviceFactory::GetDriverDescription(Driver));
694            result.Add("VERSION",     MidiInputDeviceFactory::GetDriverVersion(Driver));
695    
696            std::map<String,DeviceCreationParameter*> parameters = MidiInputDeviceFactory::GetAvailableDriverParameters(Driver);
697            if (parameters.size()) { // if there are parameters defined for this driver
698                String s;
699                std::map<String,DeviceCreationParameter*>::iterator iter = parameters.begin();
700                for (;iter != parameters.end(); iter++) {
701                    if (s != "") s += ",";
702                    s += iter->first;
703                }
704                result.Add("PARAMETERS", s);
705            }
706        }
707        catch (LinuxSamplerException e) {
708            result.Error(e);
709        }
710        return result.Produce();
711    }
712    
713    String LSCPServer::GetAudioOutputDriverInfo(String Driver) {
714        dmsg(2,("LSCPServer: GetAudioOutputDriverInfo(Driver=%s)\n",Driver.c_str()));
715        LSCPResultSet result;
716        try {
717            result.Add("DESCRIPTION", AudioOutputDeviceFactory::GetDriverDescription(Driver));
718            result.Add("VERSION",     AudioOutputDeviceFactory::GetDriverVersion(Driver));
719    
720            std::map<String,DeviceCreationParameter*> parameters = AudioOutputDeviceFactory::GetAvailableDriverParameters(Driver);
721            if (parameters.size()) { // if there are parameters defined for this driver
722                String s;
723                std::map<String,DeviceCreationParameter*>::iterator iter = parameters.begin();
724                for (;iter != parameters.end(); iter++) {
725                    if (s != "") s += ",";
726                    s += iter->first;
727                }
728                result.Add("PARAMETERS", s);
729            }
730        }
731        catch (LinuxSamplerException e) {
732            result.Error(e);
733        }
734        return result.Produce();
735    }
736    
737    String LSCPServer::GetMidiInputDriverParameterInfo(String Driver, String Parameter, std::map<String,String> DependencyList) {
738        dmsg(2,("LSCPServer: GetMidiInputDriverParameterInfo(Driver=%s,Parameter=%s)\n",Driver.c_str(),Parameter.c_str()));
739        LSCPResultSet result;
740        try {
741            DeviceCreationParameter* pParameter = MidiInputDeviceFactory::GetDriverParameter(Driver, Parameter);
742            result.Add("TYPE",         pParameter->Type());
743            result.Add("DESCRIPTION",  pParameter->Description());
744            result.Add("MANDATORY",    (pParameter->Mandatory())    ? "true" : "false");
745            result.Add("FIX",          (pParameter->Fix())          ? "true" : "false");
746            result.Add("MULTIPLICITY", (pParameter->Multiplicity()) ? "true" : "false");
747            if (pParameter->Depends())       result.Add("DEPENDS",       *pParameter->Depends());
748            if (pParameter->Default())       result.Add("DEFAULT",       *pParameter->Default());
749            if (pParameter->RangeMin())      result.Add("RANGE_MIN",     *pParameter->RangeMin());
750            if (pParameter->RangeMax())      result.Add("RANGE_MAX",     *pParameter->RangeMax());
751            if (pParameter->Possibilities()) result.Add("POSSIBILITIES", *pParameter->Possibilities());
752        }
753        catch (LinuxSamplerException e) {
754            result.Error(e);
755        }
756        return result.Produce();
757    }
758    
759    String LSCPServer::GetAudioOutputDriverParameterInfo(String Driver, String Parameter, std::map<String,String> DependencyList) {
760        dmsg(2,("LSCPServer: GetAudioOutputDriverParameterInfo(Driver=%s,Parameter=%s)\n",Driver.c_str(),Parameter.c_str()));
761        LSCPResultSet result;
762        try {
763            DeviceCreationParameter* pParameter = AudioOutputDeviceFactory::GetDriverParameter(Driver, Parameter);
764            result.Add("TYPE",         pParameter->Type());
765            result.Add("DESCRIPTION",  pParameter->Description());
766            result.Add("MANDATORY",    (pParameter->Mandatory())    ? "true" : "false");
767            result.Add("FIX",          (pParameter->Fix())          ? "true" : "false");
768            result.Add("MULTIPLICITY", (pParameter->Multiplicity()) ? "true" : "false");
769            if (pParameter->Depends())       result.Add("DEPENDS",       *pParameter->Depends());
770            if (pParameter->Default())       result.Add("DEFAULT",       *pParameter->Default());
771            if (pParameter->RangeMin())      result.Add("RANGE_MIN",     *pParameter->RangeMin());
772            if (pParameter->RangeMax())      result.Add("RANGE_MAX",     *pParameter->RangeMax());
773            if (pParameter->Possibilities()) result.Add("POSSIBILITIES", *pParameter->Possibilities());
774        }
775        catch (LinuxSamplerException e) {
776            result.Error(e);
777        }
778        return result.Produce();
779    }
780    
781    String LSCPServer::GetAudioOutputDeviceCount() {
782        dmsg(2,("LSCPServer: GetAudioOutputDeviceCount()\n"));
783        LSCPResultSet result;
784        try {
785            uint count = pSampler->AudioOutputDevices();
786            result.Add(count); // success
787        }
788        catch (LinuxSamplerException e) {
789            result.Error(e);
790        }
791        return result.Produce();
792    }
793    
794    String LSCPServer::GetMidiInputDeviceCount() {
795        dmsg(2,("LSCPServer: GetMidiInputDeviceCount()\n"));
796        LSCPResultSet result;
797        try {
798            uint count = pSampler->MidiInputDevices();
799            result.Add(count); // success
800        }
801        catch (LinuxSamplerException e) {
802            result.Error(e);
803        }
804        return result.Produce();
805    }
806    
807    String LSCPServer::GetAudioOutputDevices() {
808        dmsg(2,("LSCPServer: GetAudioOutputDevices()\n"));
809        LSCPResultSet result;
810        try {
811            String s;
812            std::map<uint, AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
813            std::map<uint, AudioOutputDevice*>::iterator iter = devices.begin();
814            for (; iter != devices.end(); iter++) {
815                if (s != "") s += ",";
816                s += ToString(iter->first);
817            }
818            result.Add(s);
819        }
820        catch (LinuxSamplerException e) {
821            result.Error(e);
822        }
823        return result.Produce();
824    }
825    
826    String LSCPServer::GetMidiInputDevices() {
827        dmsg(2,("LSCPServer: GetMidiInputDevices()\n"));
828        LSCPResultSet result;
829        try {
830            String s;
831            std::map<uint, MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
832            std::map<uint, MidiInputDevice*>::iterator iter = devices.begin();
833            for (; iter != devices.end(); iter++) {
834                if (s != "") s += ",";
835                s += ToString(iter->first);
836            }
837            result.Add(s);
838        }
839        catch (LinuxSamplerException e) {
840            result.Error(e);
841        }
842        return result.Produce();
843    }
844    
845    String LSCPServer::GetAudioOutputDeviceInfo(uint DeviceIndex) {
846        dmsg(2,("LSCPServer: GetAudioOutputDeviceInfo(DeviceIndex=%d)\n",DeviceIndex));
847        LSCPResultSet result;
848        try {
849            std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
850            if (!devices[DeviceIndex]) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceIndex) + ".");
851            AudioOutputDevice* pDevice = devices[DeviceIndex];
852            result.Add("DRIVER", pDevice->Driver());
853            std::map<String,DeviceCreationParameter*> parameters = pDevice->DeviceParameters();
854            std::map<String,DeviceCreationParameter*>::iterator iter = parameters.begin();
855            for (; iter != parameters.end(); iter++) {
856                result.Add(iter->first, iter->second->Value());
857            }
858        }
859        catch (LinuxSamplerException e) {
860            result.Error(e);
861        }
862        return result.Produce();
863    }
864    
865    String LSCPServer::GetMidiInputDeviceInfo(uint DeviceIndex) {
866        dmsg(2,("LSCPServer: GetMidiInputDeviceInfo(DeviceIndex=%d)\n",DeviceIndex));
867        LSCPResultSet result;
868        try {
869            std::map<uint,MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
870            MidiInputDevice* pDevice = devices[DeviceIndex];
871            if (!pDevice) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(DeviceIndex) + ".");
872            result.Add("DRIVER", pDevice->Driver());
873            std::map<String,DeviceCreationParameter*> parameters = pDevice->DeviceParameters();
874            std::map<String,DeviceCreationParameter*>::iterator iter = parameters.begin();
875            for (; iter != parameters.end(); iter++) {
876                result.Add(iter->first, iter->second->Value());
877            }
878        }
879        catch (LinuxSamplerException e) {
880            result.Error(e);
881        }
882        return result.Produce();
883    }
884    String LSCPServer::GetMidiInputPortInfo(uint DeviceIndex, uint PortIndex) {
885        dmsg(2,("LSCPServer: GetMidiInputPortInfo(DeviceIndex=%d, PortIndex=%d)\n",DeviceIndex, PortIndex));
886        LSCPResultSet result;
887        try {
888            std::map<uint,MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
889            MidiInputDevice* pDevice = devices[DeviceIndex];
890            if (!pDevice) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(DeviceIndex) + ".");
891            MidiInputPort* pMidiInputPort = pDevice->GetPort(PortIndex);
892            if (!pMidiInputPort) throw LinuxSamplerException("There is no MIDI input port with index " + ToString(PortIndex) + ".");
893            std::map<String,DeviceRuntimeParameter*> parameters = pMidiInputPort->PortParameters();
894            std::map<String,DeviceRuntimeParameter*>::iterator iter = parameters.begin();
895            for (; iter != parameters.end(); iter++) {
896                result.Add(iter->first, iter->second->Value());
897            }
898        }
899        catch (LinuxSamplerException e) {
900            result.Error(e);
901        }
902        return result.Produce();
903    }
904    
905    String LSCPServer::GetAudioOutputChannelInfo(uint DeviceId, uint ChannelId) {
906        dmsg(2,("LSCPServer: GetAudioOutputChannelInfo(DeviceId=%d,ChannelId)\n",DeviceId,ChannelId));
907        LSCPResultSet result;
908        try {
909            // get audio output device
910            std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
911            if (!devices[DeviceId]) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceId) + ".");
912            AudioOutputDevice* pDevice = devices[DeviceId];
913    
914            // get audio channel
915            AudioChannel* pChannel = pDevice->Channel(ChannelId);
916            if (!pChannel) throw LinuxSamplerException("Audio ouotput device does not have channel " + ToString(ChannelId) + ".");
917    
918            // return the values of all audio channel parameters
919            std::map<String,DeviceRuntimeParameter*> parameters = pChannel->ChannelParameters();
920            std::map<String,DeviceRuntimeParameter*>::iterator iter = parameters.begin();
921            for (; iter != parameters.end(); iter++) {
922                result.Add(iter->first, iter->second->Value());
923            }
924        }
925        catch (LinuxSamplerException e) {
926            result.Error(e);
927        }
928        return result.Produce();
929    }
930    
931    String LSCPServer::GetMidiInputPortParameterInfo(uint DeviceId, uint PortId, String ParameterName) {
932        dmsg(2,("LSCPServer: GetMidiInputPortParameterInfo(DeviceId=%d,PortId=%d,ParameterName=%s)\n",DeviceId,PortId,ParameterName.c_str()));
933        LSCPResultSet result;
934        try {
935            // get audio output device
936            std::map<uint,MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
937            if (!devices[DeviceId]) throw LinuxSamplerException("There is no midi input device with index " + ToString(DeviceId) + ".");
938            MidiInputDevice* pDevice = devices[DeviceId];
939    
940            // get midi port
941            MidiInputPort* pPort = pDevice->GetPort(PortId);
942            if (!pPort) throw LinuxSamplerException("Midi input device does not have port " + ToString(PortId) + ".");
943    
944            // get desired port parameter
945            std::map<String,DeviceRuntimeParameter*> parameters = pPort->PortParameters();
946            if (!parameters[ParameterName]) throw LinuxSamplerException("Midi port does not provice a parameters '" + ParameterName + "'.");
947            DeviceRuntimeParameter* pParameter = parameters[ParameterName];
948    
949            // return all fields of this audio channel parameter
950            result.Add("TYPE",         pParameter->Type());
951            result.Add("DESCRIPTION",  pParameter->Description());
952            result.Add("FIX",          pParameter->Fix());
953            result.Add("MULTIPLICITY", pParameter->Multiplicity());
954            if (pParameter->RangeMin())      result.Add("RANGE_MIN",     pParameter->RangeMin());
955            if (pParameter->RangeMax())      result.Add("RANGE_MAX",     pParameter->RangeMax());
956            if (pParameter->Possibilities()) result.Add("POSSIBILITIES", pParameter->Possibilities());
957        }
958        catch (LinuxSamplerException e) {
959            result.Error(e);
960        }
961        return result.Produce();
962    }
963    
964    String LSCPServer::GetAudioOutputChannelParameterInfo(uint DeviceId, uint ChannelId, String ParameterName) {
965        dmsg(2,("LSCPServer: GetAudioOutputChannelParameterInfo(DeviceId=%d,ChannelId=%d,ParameterName=%s)\n",DeviceId,ChannelId,ParameterName.c_str()));
966        LSCPResultSet result;
967        try {
968            // get audio output device
969            std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
970            if (!devices[DeviceId]) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceId) + ".");
971            AudioOutputDevice* pDevice = devices[DeviceId];
972    
973            // get audio channel
974            AudioChannel* pChannel = pDevice->Channel(ChannelId);
975            if (!pChannel) throw LinuxSamplerException("Audio output device does not have channel " + ToString(ChannelId) + ".");
976    
977            // get desired audio channel parameter
978            std::map<String,DeviceRuntimeParameter*> parameters = pChannel->ChannelParameters();
979            if (!parameters[ParameterName]) throw LinuxSamplerException("Audio channel does not provide a parameter '" + ParameterName + "'.");
980            DeviceRuntimeParameter* pParameter = parameters[ParameterName];
981    
982            // return all fields of this audio channel parameter
983            result.Add("TYPE",         pParameter->Type());
984            result.Add("DESCRIPTION",  pParameter->Description());
985            result.Add("FIX",          pParameter->Fix());
986            result.Add("MULTIPLICITY", pParameter->Multiplicity());
987            if (pParameter->RangeMin())      result.Add("RANGE_MIN",     pParameter->RangeMin());
988            if (pParameter->RangeMax())      result.Add("RANGE_MAX",     pParameter->RangeMax());
989            if (pParameter->Possibilities()) result.Add("POSSIBILITIES", pParameter->Possibilities());
990        }
991        catch (LinuxSamplerException e) {
992            result.Error(e);
993        }
994        return result.Produce();
995    }
996    
997    String LSCPServer::SetAudioOutputChannelParameter(uint DeviceId, uint ChannelId, String ParamKey, String ParamVal) {
998        dmsg(2,("LSCPServer: SetAudioOutputChannelParameter(DeviceId=%d,ChannelId=%d,ParamKey=%s,ParamVal=%s)\n",DeviceId,ChannelId,ParamKey.c_str(),ParamVal.c_str()));
999        LSCPResultSet result;
1000        try {
1001            // get audio output device
1002            std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
1003            if (!devices[DeviceId]) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceId) + ".");
1004            AudioOutputDevice* pDevice = devices[DeviceId];
1005    
1006            // get audio channel
1007            AudioChannel* pChannel = pDevice->Channel(ChannelId);
1008            if (!pChannel) throw LinuxSamplerException("Audio output device does not have channel " + ToString(ChannelId) + ".");
1009    
1010            // get desired audio channel parameter
1011            std::map<String,DeviceRuntimeParameter*> parameters = pChannel->ChannelParameters();
1012            if (!parameters[ParamKey]) throw LinuxSamplerException("Audio channel does not provide a parameter '" + ParamKey + "'.");
1013            DeviceRuntimeParameter* pParameter = parameters[ParamKey];
1014    
1015            // set new channel parameter value
1016            pParameter->SetValue(ParamVal);
1017        }
1018        catch (LinuxSamplerException e) {
1019            result.Error(e);
1020        }
1021        return result.Produce();
1022    }
1023    
1024    String LSCPServer::SetAudioOutputDeviceParameter(uint DeviceIndex, String ParamKey, String ParamVal) {
1025        dmsg(2,("LSCPServer: SetAudioOutputDeviceParameter(DeviceIndex=%d,ParamKey=%s,ParamVal=%s)\n",DeviceIndex,ParamKey.c_str(),ParamVal.c_str()));
1026        LSCPResultSet result;
1027        try {
1028            std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
1029            if (!devices[DeviceIndex]) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceIndex) + ".");
1030            AudioOutputDevice* pDevice = devices[DeviceIndex];
1031            std::map<String,DeviceCreationParameter*> parameters = pDevice->DeviceParameters();
1032            if (!parameters[ParamKey]) throw LinuxSamplerException("Audio output device " + ToString(DeviceIndex) + " does not have a device parameter '" + ParamKey + "'");
1033            parameters[ParamKey]->SetValue(ParamVal);
1034        }
1035        catch (LinuxSamplerException e) {
1036            result.Error(e);
1037        }
1038        return result.Produce();
1039    }
1040    
1041    String LSCPServer::SetMidiInputDeviceParameter(uint DeviceIndex, String ParamKey, String ParamVal) {
1042        dmsg(2,("LSCPServer: SetMidiOutputDeviceParameter(DeviceIndex=%d,ParamKey=%s,ParamVal=%s)\n",DeviceIndex,ParamKey.c_str(),ParamVal.c_str()));
1043        LSCPResultSet result;
1044        try {
1045            std::map<uint,MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
1046            if (!devices[DeviceIndex]) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(DeviceIndex) + ".");
1047            MidiInputDevice* pDevice = devices[DeviceIndex];
1048            std::map<String,DeviceCreationParameter*> parameters = pDevice->DeviceParameters();
1049            if (!parameters[ParamKey]) throw LinuxSamplerException("MIDI input device " + ToString(DeviceIndex) + " does not have a device parameter '" + ParamKey + "'");
1050            parameters[ParamKey]->SetValue(ParamVal);
1051        }
1052        catch (LinuxSamplerException e) {
1053            result.Error(e);
1054        }
1055        return result.Produce();
1056    }
1057    
1058    String LSCPServer::SetMidiInputPortParameter(uint DeviceIndex, uint PortIndex, String ParamKey, String ParamVal) {
1059        dmsg(2,("LSCPServer: SetMidiOutputDeviceParameter(DeviceIndex=%d,ParamKey=%s,ParamVal=%s)\n",DeviceIndex,ParamKey.c_str(),ParamVal.c_str()));
1060        LSCPResultSet result;
1061        try {
1062            std::map<uint,MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
1063            MidiInputDevice* pDevice = devices[DeviceIndex];
1064            if (!pDevice) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(DeviceIndex) + ".");
1065            MidiInputPort* pMidiInputPort = pDevice->GetPort(PortIndex);
1066            if (!pMidiInputPort) throw LinuxSamplerException("There is no MIDI input port with index " + ToString(PortIndex) + ".");
1067            std::map<String,DeviceRuntimeParameter*> parameters = pMidiInputPort->PortParameters();
1068            if (!parameters[ParamKey]) throw LinuxSamplerException("MIDI input device " + ToString(PortIndex) + " does not have a parameter '" + ParamKey + "'");
1069            parameters[ParamKey]->SetValue(ParamVal);
1070        }
1071        catch (LinuxSamplerException e) {
1072            result.Error(e);
1073        }
1074        return result.Produce();
1075  }  }
1076    
1077  /**  /**
1078   * 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
1079   * playback on a particular sampler channel.   * playback on a particular sampler channel.
1080   */   */
1081  String LSCPServer::SetAudioOutputChannel(uint AudioOutputChannel, uint SamplerChannel) {  String LSCPServer::SetAudioOutputChannel(uint ChannelAudioOutputChannel, uint AudioOutputDeviceInputChannel, uint uiSamplerChannel) {
1082      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));
1083      return "ERR:0:Not implemented yet.\r\n";      return "ERR:0:Not implemented yet.\r\n"; //FIXME: Add support for this in resultset class?
1084  }  }
1085    
1086  /**  String LSCPServer::SetAudioOutputDevice(uint AudioDeviceId, uint uiSamplerChannel) {
1087   * 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));
1088   * engine of a particular sampler channel should listen to.      LSCPResultSet result;
1089   */      try {
1090  String LSCPServer::SetMIDIInputPort(String MIDIInputPort, uint Samplerchannel) {          SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1091      dmsg(2,("LSCPServer: SetMIDIInputPort(MIDIInputPort=%s, Samplerchannel=%d)\n", MIDIInputPort.c_str(), Samplerchannel));          if (!pSamplerChannel) throw LinuxSamplerException("Invalid channel number " + ToString(uiSamplerChannel));
1092      return "ERR:0:Not implemented yet.\r\n";          std::map<uint, AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
1093            AudioOutputDevice* pDevice = devices[AudioDeviceId];
1094            if (!pDevice) throw LinuxSamplerException("There is no audio output device with index " + ToString(AudioDeviceId));
1095            pSamplerChannel->SetAudioOutputDevice(pDevice);
1096        }
1097        catch (LinuxSamplerException e) {
1098             result.Error(e);
1099        }
1100        return result.Produce();
1101    }
1102    
1103    String LSCPServer::SetAudioOutputType(String AudioOutputDriver, uint uiSamplerChannel) {
1104        dmsg(2,("LSCPServer: SetAudioOutputType(String AudioOutputDriver=%s, SamplerChannel=%d)\n",AudioOutputDriver.c_str(),uiSamplerChannel));
1105        LSCPResultSet result;
1106        try {
1107            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1108            if (!pSamplerChannel) throw LinuxSamplerException("Invalid channel number " + ToString(uiSamplerChannel));
1109            // Driver type name aliasing...
1110            if (AudioOutputDriver == "ALSA") AudioOutputDriver = "Alsa";
1111            if (AudioOutputDriver == "JACK") AudioOutputDriver = "Jack";
1112            // Check if there's one audio output device already created
1113            // for the intended audio driver type (AudioOutputDriver)...
1114            AudioOutputDevice *pDevice = NULL;
1115            std::map<uint, AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
1116            std::map<uint, AudioOutputDevice*>::iterator iter = devices.begin();
1117            for (; iter != devices.end(); iter++) {
1118                if ((iter->second)->Driver() == AudioOutputDriver) {
1119                    pDevice = iter->second;
1120                    break;
1121                }
1122            }
1123            // If it doesn't exist, create a new one with default parameters...
1124            if (pDevice == NULL) {
1125                std::map<String,String> params;
1126                pDevice = pSampler->CreateAudioOutputDevice(AudioOutputDriver, params);
1127            }
1128            // Must have a device...
1129            if (pDevice == NULL)
1130                throw LinuxSamplerException("Internal error: could not create audio output device.");
1131            // Set it as the current channel device...
1132            pSamplerChannel->SetAudioOutputDevice(pDevice);
1133        }
1134        catch (LinuxSamplerException e) {
1135             result.Error(e);
1136        }
1137        return result.Produce();
1138    }
1139    
1140    String LSCPServer::SetMIDIInputPort(uint MIDIPort, uint uiSamplerChannel) {
1141        dmsg(2,("LSCPServer: SetMIDIInputPort(MIDIPort=%d, SamplerChannel=%d)\n",MIDIPort,uiSamplerChannel));
1142        LSCPResultSet result;
1143        try {
1144            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1145            if (!pSamplerChannel) throw LinuxSamplerException("Invalid channel number " + ToString(uiSamplerChannel));
1146            pSamplerChannel->SetMidiInputPort(MIDIPort);
1147        }
1148        catch (LinuxSamplerException e) {
1149             result.Error(e);
1150        }
1151        return result.Produce();
1152    }
1153    
1154    String LSCPServer::SetMIDIInputChannel(uint MIDIChannel, uint uiSamplerChannel) {
1155        dmsg(2,("LSCPServer: SetMIDIInputChannel(MIDIChannel=%d, SamplerChannel=%d)\n",MIDIChannel,uiSamplerChannel));
1156        LSCPResultSet result;
1157        try {
1158            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1159            if (!pSamplerChannel) throw LinuxSamplerException("Invalid channel number " + ToString(uiSamplerChannel));
1160            pSamplerChannel->SetMidiInputChannel((MidiInputPort::midi_chan_t) MIDIChannel);
1161        }
1162        catch (LinuxSamplerException e) {
1163             result.Error(e);
1164        }
1165        return result.Produce();
1166    }
1167    
1168    String LSCPServer::SetMIDIInputDevice(uint MIDIDeviceId, uint uiSamplerChannel) {
1169        dmsg(2,("LSCPServer: SetMIDIInputDevice(MIDIDeviceId=%d, SamplerChannel=%d)\n",MIDIDeviceId,uiSamplerChannel));
1170        LSCPResultSet result;
1171        try {
1172            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1173            if (!pSamplerChannel) throw LinuxSamplerException("Invalid channel number " + ToString(uiSamplerChannel));
1174            std::map<uint, MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
1175            MidiInputDevice* pDevice = devices[MIDIDeviceId];
1176            if (!pDevice) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(MIDIDeviceId));
1177            pSamplerChannel->SetMidiInputDevice(pDevice);
1178        }
1179        catch (LinuxSamplerException e) {
1180             result.Error(e);
1181        }
1182        return result.Produce();
1183    }
1184    
1185    String LSCPServer::SetMIDIInputType(String MidiInputDriver, uint uiSamplerChannel) {
1186        dmsg(2,("LSCPServer: SetMIDIInputType(String MidiInputDriver=%s, SamplerChannel=%d)\n",MidiInputDriver.c_str(),uiSamplerChannel));
1187        LSCPResultSet result;
1188        try {
1189            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1190            if (!pSamplerChannel) throw LinuxSamplerException("Invalid channel number " + ToString(uiSamplerChannel));
1191            // Driver type name aliasing...
1192            if (MidiInputDriver == "ALSA") MidiInputDriver = "Alsa";
1193            // Check if there's one MIDI input device already created
1194            // for the intended MIDI driver type (MidiInputDriver)...
1195            MidiInputDevice *pDevice = NULL;
1196            std::map<uint, MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
1197            std::map<uint, MidiInputDevice*>::iterator iter = devices.begin();
1198            for (; iter != devices.end(); iter++) {
1199                if ((iter->second)->Driver() == MidiInputDriver) {
1200                    pDevice = iter->second;
1201                    break;
1202                }
1203            }
1204            // If it doesn't exist, create a new one with default parameters...
1205            if (pDevice == NULL) {
1206                std::map<String,String> params;
1207                pDevice = pSampler->CreateMidiInputDevice(MidiInputDriver, params);
1208                // Make it with at least one initial port.
1209                std::map<String,DeviceCreationParameter*> parameters = pDevice->DeviceParameters();
1210                parameters["PORTS"]->SetValue("1");
1211            }
1212            // Must have a device...
1213            if (pDevice == NULL)
1214                throw LinuxSamplerException("Internal error: could not create MIDI input device.");
1215            // Set it as the current channel device...
1216            pSamplerChannel->SetMidiInputDevice(pDevice);
1217        }
1218        catch (LinuxSamplerException e) {
1219             result.Error(e);
1220        }
1221        return result.Produce();
1222  }  }
1223    
1224  /**  /**
1225   * 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
1226   * engine of a particular sampler channel should listen to.   * engine of a particular sampler channel should listen to.
1227   */   */
1228  String LSCPServer::SetMIDIInputChannel(uint MIDIChannel, uint SamplerChannel) {  String LSCPServer::SetMIDIInput(uint MIDIDeviceId, uint MIDIPort, uint MIDIChannel, uint uiSamplerChannel) {
1229      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));
1230      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result;
1231        try {
1232            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1233            if (!pSamplerChannel) throw LinuxSamplerException("Invalid channel number " + ToString(uiSamplerChannel));
1234            std::map<uint, MidiInputDevice*> devices =  pSampler->GetMidiInputDevices();
1235            MidiInputDevice* pDevice = devices[MIDIDeviceId];
1236            if (!pDevice) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(MIDIDeviceId));
1237            pSamplerChannel->SetMidiInput(pDevice, MIDIPort, (MidiInputPort::midi_chan_t) MIDIChannel);
1238        }
1239        catch (LinuxSamplerException e) {
1240             result.Error(e);
1241        }
1242        return result.Produce();
1243  }  }
1244    
1245  /**  /**
1246   * 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
1247   * particular sampler channel.   * particular sampler channel.
1248   */   */
1249  String LSCPServer::SetVolume(double Volume, uint SamplerChannel) {  String LSCPServer::SetVolume(double Volume, uint uiSamplerChannel) {
1250      dmsg(2,("LSCPServer: SetVolume(Volume=%f, SamplerChannel=%d)\n", Volume, SamplerChannel));      dmsg(2,("LSCPServer: SetVolume(Volume=%f, SamplerChannel=%d)\n", Volume, uiSamplerChannel));
1251      pEngine->Volume = Volume;      LSCPResultSet result;
1252      return "OK\r\n";      try {
1253            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1254            if (!pSamplerChannel) throw LinuxSamplerException("Index out of bounds");
1255            Engine* pEngine = pSamplerChannel->GetEngine();
1256            if (!pEngine) throw LinuxSamplerException("No engine loaded on channel");
1257            pEngine->Volume(Volume);
1258        }
1259        catch (LinuxSamplerException e) {
1260             result.Error(e);
1261        }
1262        return result.Produce();
1263  }  }
1264    
1265  /**  /**
1266   * Will be called by the parser to reset a particular sampler channel.   * Will be called by the parser to reset a particular sampler channel.
1267   */   */
1268  String LSCPServer::ResetChannel(uint SamplerChannel) {  String LSCPServer::ResetChannel(uint uiSamplerChannel) {
1269      dmsg(2,("LSCPServer: ResetChannel(SamplerChannel=%d)\n", SamplerChannel));      dmsg(2,("LSCPServer: ResetChannel(SamplerChannel=%d)\n", uiSamplerChannel));
1270      pEngine->Reset();      LSCPResultSet result;
1271      return "OK\r\n";      try {
1272            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1273            if (!pSamplerChannel) throw LinuxSamplerException("Index out of bounds");
1274            Engine* pEngine = pSamplerChannel->GetEngine();
1275            if (!pEngine) throw LinuxSamplerException("No engine loaded on channel");
1276            pEngine->Reset();
1277        }
1278        catch (LinuxSamplerException e) {
1279             result.Error(e);
1280        }
1281        return result.Produce();
1282    }
1283    
1284    /**
1285     * Will be called by the parser to reset the whole sampler.
1286     */
1287    String LSCPServer::ResetSampler() {
1288        dmsg(2,("LSCPServer: ResetSampler()\n"));
1289        pSampler->Reset();
1290        LSCPResultSet result;
1291        return result.Produce();
1292  }  }
1293    
1294  /**  /**
1295   * Will be called by the parser to subscribe a client (frontend) on the   * Will be called by the parser to subscribe a client (frontend) on the
1296   * server for receiving event messages.   * server for receiving event messages.
1297   */   */
1298  String LSCPServer::SubscribeNotification(uint UDPPort) {  String LSCPServer::SubscribeNotification(LSCPEvent::event_t type) {
1299      dmsg(2,("LSCPServer: SubscribeNotification(UDPPort=%d)\n", UDPPort));      dmsg(2,("LSCPServer: SubscribeNotification(Event=%s)\n", LSCPEvent::Name(type).c_str()));
1300      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result;
1301        SubscriptionMutex.Lock();
1302        eventSubscriptions[type].push_back(currentSocket);
1303        SubscriptionMutex.Unlock();
1304        return result.Produce();
1305  }  }
1306    
1307  /**  /**
1308   * 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
1309   * for not receiving further event messages.   * for not receiving further event messages.
1310   */   */
1311  String LSCPServer::UnsubscribeNotification(String SessionID) {  String LSCPServer::UnsubscribeNotification(LSCPEvent::event_t type) {
1312      dmsg(2,("LSCPServer: UnsubscribeNotification(SessionID=%s)\n", SessionID.c_str()));      dmsg(2,("LSCPServer: UnsubscribeNotification(Event=%s)\n", LSCPEvent::Name(type).c_str()));
1313      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result;
1314        SubscriptionMutex.Lock();
1315        eventSubscriptions[type].remove(currentSocket);
1316        SubscriptionMutex.Unlock();
1317        return result.Produce();
1318    }
1319    
1320    /**
1321     * Will be called by the parser to enable or disable echo mode; if echo
1322     * mode is enabled, all commands from the client will (immediately) be
1323     * echoed back to the client.
1324     */
1325    String LSCPServer::SetEcho(yyparse_param_t* pSession, double boolean_value) {
1326        dmsg(2,("LSCPServer: SetEcho(val=%f)\n", boolean_value));
1327        LSCPResultSet result;
1328        try {
1329            if      (boolean_value == 0) pSession->bVerbose = false;
1330            else if (boolean_value == 1) pSession->bVerbose = true;
1331            else throw LinuxSamplerException("Not a boolean value, must either be 0 or 1");
1332        }
1333        catch (LinuxSamplerException e) {
1334             result.Error(e);
1335        }
1336        return result.Produce();
1337    }
1338    
1339    // Instrument loader constructor.
1340    LSCPLoadInstrument::LSCPLoadInstrument(Engine* pEngine, String Filename, uint uiInstrument)
1341        : Thread(false, 0, -4)
1342    {
1343        this->pEngine = pEngine;
1344        this->Filename = Filename;
1345        this->uiInstrument = uiInstrument;
1346    }
1347    
1348    // Instrument loader process.
1349    int LSCPLoadInstrument::Main()
1350    {
1351        try {
1352            pEngine->LoadInstrument(Filename.c_str(), uiInstrument);
1353        }
1354    
1355        catch (LinuxSamplerException e) {
1356            e.PrintMessage();
1357        }
1358    
1359        // Always re-enable the engine.
1360        pEngine->Enable();
1361    
1362        // FIXME: Shoot ourselves on the foot?
1363        delete this;
1364  }  }
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