/[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 392 by schoenebeck, Sat Feb 19 02:40:24 2005 UTC
# Line 2  Line 2 
2   *                                                                         *   *                                                                         *
3   *   LinuxSampler - modular, streaming capable sampler                     *   *   LinuxSampler - modular, streaming capable sampler                     *
4   *                                                                         *   *                                                                         *
5   *   Copyright (C) 2003 by Benno Senoner and Christian Schoenebeck         *   *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *
6     *   Copyright (C) 2005 Christian Schoenebeck                              *
7   *                                                                         *   *                                                                         *
8   *   This program is free software; you can redistribute it and/or modify  *   *   This library is free software; you can redistribute it and/or modify  *
9   *   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  *
10   *   the Free Software Foundation; either version 2 of the License, or     *   *   the Free Software Foundation; either version 2 of the License, or     *
11   *   (at your option) any later version.                                   *   *   (at your option) any later version.                                   *
12   *                                                                         *   *                                                                         *
13   *   This program is distributed in the hope that it will be useful,       *   *   This library is distributed in the hope that it will be useful,       *
14   *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *   *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
15   *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *   *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
16   *   GNU General Public License for more details.                          *   *   GNU General Public License for more details.                          *
17   *                                                                         *   *                                                                         *
18   *   You should have received a copy of the GNU General Public License     *   *   You should have received a copy of the GNU General Public License     *
19   *   along with this program; if not, write to the Free Software           *   *   along with this library; if not, write to the Free Software           *
20   *   Foundation, Inc., 59 Temple Place, Suite 330, Boston,                 *   *   Foundation, Inc., 59 Temple Place, Suite 330, Boston,                 *
21   *   MA  02111-1307  USA                                                   *   *   MA  02111-1307  USA                                                   *
22   ***************************************************************************/   ***************************************************************************/
23    
24  #include "lscpserver.h"  #include "lscpserver.h"
25    #include "lscpresultset.h"
26    #include "lscpevent.h"
27    
28  LSCPServer::LSCPServer(AudioThread* pEngine) : Thread(false, 0, -4) {  #include "../engines/gig/Engine.h"
29      this->pEngine = pEngine;  #include "../drivers/audio/AudioOutputDeviceFactory.h"
30    #include "../drivers/midi/MidiInputDeviceFactory.h"
31    
32    /**
33     * Below are a few static members of the LSCPServer class.
34     * The big assumption here is that LSCPServer is going to remain a singleton.
35     * These members are used to support client connections.
36     * Class handles multiple connections at the same time using select() and non-blocking recv()
37     * Commands are processed by a single LSCPServer thread.
38     * Notifications are delivered either by the thread that originated them
39     * or (if the resultset is currently in progress) by the LSCPServer thread
40     * after the resultset was sent out.
41     * This makes sure that resultsets can not be interrupted by notifications.
42     * This also makes sure that the thread sending notification is not blocked
43     * by the LSCPServer thread.
44     */
45    fd_set LSCPServer::fdSet;
46    int LSCPServer::currentSocket = -1;
47    std::vector<yyparse_param_t> LSCPServer::Sessions = std::vector<yyparse_param_t>();
48    std::map<int,String> LSCPServer::bufferedNotifies = std::map<int,String>();
49    std::map<int,String> LSCPServer::bufferedCommands = std::map<int,String>();
50    std::map< LSCPEvent::event_t, std::list<int> > LSCPServer::eventSubscriptions = std::map< LSCPEvent::event_t, std::list<int> >();
51    Mutex LSCPServer::NotifyMutex = Mutex();
52    Mutex LSCPServer::NotifyBufferMutex = Mutex();
53    Mutex LSCPServer::SubscriptionMutex = Mutex();
54    Mutex LSCPServer::RTNotifyMutex = Mutex();
55    
56    LSCPServer::LSCPServer(Sampler* pSampler) : Thread(true, false, 0, -4) {
57        this->pSampler = pSampler;
58        LSCPEvent::RegisterEvent(LSCPEvent::event_channels, "CHANNELS");
59        LSCPEvent::RegisterEvent(LSCPEvent::event_voice_count, "VOICE_COUNT");
60        LSCPEvent::RegisterEvent(LSCPEvent::event_stream_count, "STREAM_COUNT");
61        LSCPEvent::RegisterEvent(LSCPEvent::event_buffer_fill, "BUFFER_FILL");
62        LSCPEvent::RegisterEvent(LSCPEvent::event_info, "INFO");
63        LSCPEvent::RegisterEvent(LSCPEvent::event_misc, "MISCELLANEOUS");
64    }
65    
66    /**
67     * Blocks the calling thread until the LSCP Server is initialized and
68     * accepting socket connections, if the server is already initialized then
69     * this method will return immediately.
70     * @param TimeoutSeconds     - optional: max. wait time in seconds
71     *                             (default: 0s)
72     * @param TimeoutNanoSeconds - optional: max wait time in nano seconds
73     *                             (default: 0ns)
74     * @returns  0 on success, a value less than 0 if timeout exceeded
75     */
76    int LSCPServer::WaitUntilInitialized(long TimeoutSeconds, long TimeoutNanoSeconds) {
77        return Initialized.WaitAndUnlockIf(false, TimeoutSeconds, TimeoutNanoSeconds);
78  }  }
79    
80  int LSCPServer::Main() {  int LSCPServer::Main() {
81      hSocket = socket(AF_INET, SOCK_STREAM, 0);      int hSocket = socket(AF_INET, SOCK_STREAM, 0);
82      if (hSocket < 0) {      if (hSocket < 0) {
83          std::cerr << "LSCPServer: Could not create server socket." << std::endl;          std::cerr << "LSCPServer: Could not create server socket." << std::endl;
84          return -1;          //return -1;
85            exit(EXIT_FAILURE);
86      }      }
87    
88      SocketAddress.sin_family      = AF_INET;      SocketAddress.sin_family      = AF_INET;
# Line 38  int LSCPServer::Main() { Line 90  int LSCPServer::Main() {
90      SocketAddress.sin_addr.s_addr = htonl(INADDR_ANY);      SocketAddress.sin_addr.s_addr = htonl(INADDR_ANY);
91    
92      if (bind(hSocket, (sockaddr*) &SocketAddress, sizeof(sockaddr_in)) < 0) {      if (bind(hSocket, (sockaddr*) &SocketAddress, sizeof(sockaddr_in)) < 0) {
93          std::cerr << "LSCPServer: Could not bind server socket." << std::endl;          std::cerr << "LSCPServer: Could not bind server socket, retrying for " << ToString(LSCP_SERVER_BIND_TIMEOUT) << " seconds...";
94          close(hSocket);          for (int trial = 0; true; trial++) { // retry for LSCP_SERVER_BIND_TIMEOUT seconds
95          return -1;              if (bind(hSocket, (sockaddr*) &SocketAddress, sizeof(sockaddr_in)) < 0) {
96                    if (trial > LSCP_SERVER_BIND_TIMEOUT) {
97                        std::cerr << "gave up!" << std::endl;
98                        close(hSocket);
99                        //return -1;
100                        exit(EXIT_FAILURE);
101                    }
102                    else sleep(1); // sleep 1s
103                }
104                else break; // success
105            }
106      }      }
107    
108      listen(hSocket, 1);      listen(hSocket, 1);
109      dmsg(1,("LSCPServer: Server running.\n")); // server running      Initialized.Set(true);
110    
111      // now wait for client connections and handle their requests      // now wait for client connections and handle their requests
112      sockaddr_in client;      sockaddr_in client;
113      int length = sizeof(client);      int length = sizeof(client);
114      while (true) {      FD_ZERO(&fdSet);
115          hSession = accept(hSocket, (sockaddr*) &client, (socklen_t*) &length);      FD_SET(hSocket, &fdSet);
116          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);  
117    
118          close(hSession);      while (true) {
119          dmsg(1,("LSCPServer: Client connection terminated.\n"));          fd_set selectSet = fdSet;
120            int retval = select(maxSessions+1, &selectSet, NULL, NULL, NULL);
121            if (retval == 0)
122                    continue; //Nothing try again
123            if (retval == -1) {
124                    std::cerr << "LSCPServer: Socket select error." << std::endl;
125                    close(hSocket);
126                    exit(EXIT_FAILURE);
127            }
128    
129            //Accept new connections now (if any)
130            if (FD_ISSET(hSocket, &selectSet)) {
131                    int socket = accept(hSocket, (sockaddr*) &client, (socklen_t*) &length);
132                    if (socket < 0) {
133                            std::cerr << "LSCPServer: Client connection failed." << std::endl;
134                            exit(EXIT_FAILURE);
135                    }
136    
137                    if (fcntl(socket, F_SETFL, O_NONBLOCK)) {
138                            std::cerr << "LSCPServer: F_SETFL O_NONBLOCK failed." << std::endl;
139                            exit(EXIT_FAILURE);
140                    }
141    
142                    // Parser initialization
143                    yyparse_param_t yyparse_param;
144                    yyparse_param.pServer  = this;
145                    yyparse_param.hSession = socket;
146    
147                    Sessions.push_back(yyparse_param);
148                    FD_SET(socket, &fdSet);
149                    if (socket > maxSessions)
150                            maxSessions = socket;
151                    dmsg(1,("LSCPServer: Client connection established on socket:%d.\n", socket));
152                    LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_misc, "Client connection established on socket", socket));
153                    continue; //Maybe this was the only selected socket, better select again
154            }
155    
156            //Something was selected and it was not the hSocket, so it must be some command(s) coming.
157            for (std::vector<yyparse_param_t>::iterator iter = Sessions.begin(); iter != Sessions.end(); iter++) {
158                    if (FD_ISSET((*iter).hSession, &selectSet)) {   //Was it this socket?
159                            if (GetLSCPCommand(iter)) {     //Have we read the entire command?
160                                    dmsg(3,("LSCPServer: Got command on socket %d, calling parser.\n", currentSocket));
161                                    int dummy; // just a temporary hack to fulfill the restart() function prototype
162                                    restart(NULL, dummy); // restart the 'scanner'
163                                    currentSocket = (*iter).hSession;  //a hack
164                                    if ((*iter).bVerbose) { // if echo mode enabled
165                                        AnswerClient(bufferedCommands[currentSocket]);
166                                    }
167                                    int result = yyparse(&(*iter));
168                                    currentSocket = -1;     //continuation of a hack
169                                    dmsg(3,("LSCPServer: Done parsing on socket %d.\n", currentSocket));
170                                    if (result == LSCP_QUIT) { //Was it a quit command by any chance?
171                                            CloseConnection(iter);
172                                    }
173                            }
174                            //socket may have been closed, iter may be invalid, get out of the loop for now.
175                            //we'll be back if there is data.
176                            break;
177                    }
178            }
179    
180            //Now let's deliver late notifies (if any)
181            NotifyBufferMutex.Lock();
182            for (std::map<int,String>::iterator iterNotify = bufferedNotifies.begin(); iterNotify != bufferedNotifies.end(); iterNotify++) {
183                    send(iterNotify->first, iterNotify->second.c_str(), iterNotify->second.size(), 0);
184                    bufferedNotifies.erase(iterNotify);
185            }
186            NotifyBufferMutex.Unlock();
187      }      }
188  }  }
189    
190    void LSCPServer::CloseConnection( std::vector<yyparse_param_t>::iterator iter ) {
191            int socket = (*iter).hSession;
192            dmsg(1,("LSCPServer: Client connection terminated on socket:%d.\n",socket));
193            LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_misc, "Client connection terminated on socket", socket));
194            Sessions.erase(iter);
195            FD_CLR(socket,  &fdSet);
196            SubscriptionMutex.Lock(); //Must unsubscribe this socket from all events (if any)
197            for (std::map< LSCPEvent::event_t, std::list<int> >::iterator iter = eventSubscriptions.begin(); iter != eventSubscriptions.end(); iter++) {
198                    iter->second.remove(socket);
199            }
200            SubscriptionMutex.Unlock();
201            NotifyMutex.Lock();
202            bufferedCommands.erase(socket);
203            bufferedNotifies.erase(socket);
204            close(socket);
205            NotifyMutex.Unlock();
206    }
207    
208    int LSCPServer::EventSubscribers( std::list<LSCPEvent::event_t> events ) {
209            int subs = 0;
210            SubscriptionMutex.Lock();
211            for( std::list<LSCPEvent::event_t>::iterator iter = events.begin();
212                            iter != events.end(); iter++)
213            {
214                    subs += eventSubscriptions.count(*iter);
215            }
216            SubscriptionMutex.Unlock();
217            return subs;
218    }
219    
220    void LSCPServer::SendLSCPNotify( LSCPEvent event ) {
221            SubscriptionMutex.Lock();
222            if (eventSubscriptions.count(event.GetType()) == 0) {
223                    SubscriptionMutex.Unlock();     //Nobody is subscribed to this event
224                    return;
225            }
226            std::list<int>::iterator iter = eventSubscriptions[event.GetType()].begin();
227            std::list<int>::iterator end = eventSubscriptions[event.GetType()].end();
228            String notify = event.Produce();
229    
230            while (true) {
231                    if (NotifyMutex.Trylock()) {
232                            for(;iter != end; iter++)
233                                    send(*iter, notify.c_str(), notify.size(), 0);
234                            NotifyMutex.Unlock();
235                            break;
236                    } else {
237                            if (NotifyBufferMutex.Trylock()) {
238                                    for(;iter != end; iter++)
239                                            bufferedNotifies[*iter] += notify;
240                                    NotifyBufferMutex.Unlock();
241                                    break;
242                            }
243                    }
244            }
245            SubscriptionMutex.Unlock();
246    }
247    
248    extern int GetLSCPCommand( void *buf, int max_size ) {
249            String command = LSCPServer::bufferedCommands[LSCPServer::currentSocket];
250            if (command.size() == 0) {              //Parser wants input but we have nothing.
251                    strcpy((char*) buf, "\n");      //So give it an empty command
252                    return 1;                       //to keep it happy.
253            }
254    
255            if (max_size < command.size()) {
256                    std::cerr << "getLSCPCommand: Flex buffer too small, ignoring the command." << std::endl;
257                    return 0;       //This will never happen
258            }
259    
260            strcpy((char*) buf, command.c_str());
261            LSCPServer::bufferedCommands.erase(LSCPServer::currentSocket);
262            return command.size();
263    }
264    
265    /**
266     * Will be called to try to read the command from the socket
267     * If command is read, it will return true. Otherwise false is returned.
268     * In any case the received portion (complete or incomplete) is saved into bufferedCommand map.
269     */
270    bool LSCPServer::GetLSCPCommand( std::vector<yyparse_param_t>::iterator iter ) {
271            int socket = (*iter).hSession;
272            char c;
273            int i = 0;
274            while (true) {
275                    int result = recv(socket, (void *)&c, 1, 0); //Read one character at a time for now
276                    if (result == 0) { //socket was selected, so 0 here means client has closed the connection
277                            CloseConnection(iter);
278                            break;
279                    }
280                    if (result == 1) {
281                            if (c == '\r')
282                                    continue; //Ignore CR
283                            if (c == '\n') {
284                                    LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_misc, "Received \'" + bufferedCommands[socket] + "\' on socket", socket));
285                                    bufferedCommands[socket] += "\n";
286                                    return true; //Complete command was read
287                            }
288                            bufferedCommands[socket] += c;
289                    }
290                    if (result == -1) {
291                            if (errno == EAGAIN) //Would block, try again later.
292                                    return false;
293                            switch(errno) {
294                                    case EBADF:
295                                            dmsg(2,("LSCPScanner: The argument s is an invalid descriptor.\n"));
296                                            break;
297                                    case ECONNREFUSED:
298                                            dmsg(2,("LSCPScanner: A remote host refused to allow the network connection (typically because it is not running the requested service).\n"));
299                                            break;
300                                    case ENOTCONN:
301                                            dmsg(2,("LSCPScanner: The socket is associated with a connection-oriented protocol and has not been connected (see connect(2) and accept(2)).\n"));
302                                            break;
303                                    case ENOTSOCK:
304                                            dmsg(2,("LSCPScanner: The argument s does not refer to a socket.\n"));
305                                            break;
306                                    case EAGAIN:
307                                            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"));
308                                            break;
309                                    case EINTR:
310                                            dmsg(2,("LSCPScanner: The receive was interrupted by delivery of a signal before any data were available.\n"));
311                                            break;
312                                    case EFAULT:
313                                            dmsg(2,("LSCPScanner: The receive buffer pointer(s) point outside the process's address space.\n"));
314                                            break;
315                                    case EINVAL:
316                                            dmsg(2,("LSCPScanner: Invalid argument passed.\n"));
317                                            break;
318                                    case ENOMEM:
319                                            dmsg(2,("LSCPScanner: Could not allocate memory for recvmsg.\n"));
320                                            break;
321                                    default:
322                                            dmsg(2,("LSCPScanner: Unknown recv() error.\n"));
323                                            break;
324                            }
325                            CloseConnection(iter);
326                            break;
327                    }
328            }
329            return false;
330    }
331    
332  /**  /**
333   * 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
334   * client / frontend.   * client / frontend.
# Line 80  int LSCPServer::Main() { Line 337  int LSCPServer::Main() {
337   */   */
338  void LSCPServer::AnswerClient(String ReturnMessage) {  void LSCPServer::AnswerClient(String ReturnMessage) {
339      dmsg(2,("LSCPServer::AnswerClient(ReturnMessage=%s)", ReturnMessage.c_str()));      dmsg(2,("LSCPServer::AnswerClient(ReturnMessage=%s)", ReturnMessage.c_str()));
340      send(hSession, ReturnMessage.c_str(), ReturnMessage.size(), 0);      if (currentSocket != -1) {
341                NotifyMutex.Lock();
342                send(currentSocket, ReturnMessage.c_str(), ReturnMessage.size(), 0);
343                NotifyMutex.Unlock();
344        }
345    }
346    
347    /**
348     * Find a created audio output device index.
349     */
350    int LSCPServer::GetAudioOutputDeviceIndex ( AudioOutputDevice *pDevice )
351    {
352        // Search for the created device to get its index
353        std::map<uint, AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
354        std::map<uint, AudioOutputDevice*>::iterator iter = devices.begin();
355        for (; iter != devices.end(); iter++) {
356            if (iter->second == pDevice)
357                return iter->first;
358        }
359        // Not found.
360        return -1;
361    }
362    
363    /**
364     * Find a created midi input device index.
365     */
366    int LSCPServer::GetMidiInputDeviceIndex ( MidiInputDevice *pDevice )
367    {
368        // Search for the created device to get its index
369        std::map<uint, MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
370        std::map<uint, MidiInputDevice*>::iterator iter = devices.begin();
371        for (; iter != devices.end(); iter++) {
372            if (iter->second == pDevice)
373                return iter->first;
374        }
375        // Not found.
376        return -1;
377    }
378    
379    String LSCPServer::CreateAudioOutputDevice(String Driver, std::map<String,String> Parameters) {
380        dmsg(2,("LSCPServer: CreateAudioOutputDevice(Driver=%s)\n", Driver.c_str()));
381        LSCPResultSet result;
382        try {
383            AudioOutputDevice* pDevice = pSampler->CreateAudioOutputDevice(Driver, Parameters);
384            // search for the created device to get its index
385            int index = GetAudioOutputDeviceIndex(pDevice);
386            if (index == -1) throw LinuxSamplerException("Internal error: could not find created audio output device.");
387            result = index; // success
388        }
389        catch (LinuxSamplerException e) {
390            result.Error(e);
391        }
392        return result.Produce();
393    }
394    
395    String LSCPServer::CreateMidiInputDevice(String Driver, std::map<String,String> Parameters) {
396        dmsg(2,("LSCPServer: CreateMidiInputDevice(Driver=%s)\n", Driver.c_str()));
397        LSCPResultSet result;
398        try {
399            MidiInputDevice* pDevice = pSampler->CreateMidiInputDevice(Driver, Parameters);
400            // search for the created device to get its index
401            int index = GetMidiInputDeviceIndex(pDevice);
402            if (index == -1) throw LinuxSamplerException("Internal error: could not find created midi input device.");
403            result = index; // success
404        }
405        catch (LinuxSamplerException e) {
406            result.Error(e);
407        }
408        return result.Produce();
409    }
410    
411    String LSCPServer::DestroyAudioOutputDevice(uint DeviceIndex) {
412        dmsg(2,("LSCPServer: DestroyAudioOutputDevice(DeviceIndex=%d)\n", DeviceIndex));
413        LSCPResultSet result;
414        try {
415            std::map<uint, AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
416            if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceIndex) + ".");
417            AudioOutputDevice* pDevice = devices[DeviceIndex];
418            pSampler->DestroyAudioOutputDevice(pDevice);
419        }
420        catch (LinuxSamplerException e) {
421            result.Error(e);
422        }
423        return result.Produce();
424    }
425    
426    String LSCPServer::DestroyMidiInputDevice(uint DeviceIndex) {
427        dmsg(2,("LSCPServer: DestroyMidiInputDevice(DeviceIndex=%d)\n", DeviceIndex));
428        LSCPResultSet result;
429        try {
430            std::map<uint, MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
431            if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceIndex) + ".");
432            MidiInputDevice* pDevice = devices[DeviceIndex];
433            pSampler->DestroyMidiInputDevice(pDevice);
434        }
435        catch (LinuxSamplerException e) {
436            result.Error(e);
437        }
438        return result.Produce();
439  }  }
440    
441  /**  /**
442   * Will be called by the parser to load an instrument.   * Will be called by the parser to load an instrument.
443   */   */
444  String LSCPServer::LoadInstrument(String Filename, uint Instrument, uint SamplerChannel) {  String LSCPServer::LoadInstrument(String Filename, uint uiInstrument, uint uiSamplerChannel, bool bBackground) {
445      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));
446      result_t res = pEngine->LoadInstrument(Filename.c_str(), Instrument);      LSCPResultSet result;
447      return ConvertResult(res);      try {
448            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
449            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
450            Engine* pEngine = pSamplerChannel->GetEngine();
451            if (!pEngine) throw LinuxSamplerException("No engine loaded on sampler channel");
452            if (!pSamplerChannel->GetAudioOutputDevice())
453                throw LinuxSamplerException("No audio output device connected to sampler channel");
454            if (bBackground) {
455                InstrumentLoader.StartNewLoad(Filename, uiInstrument, pEngine);
456            }
457            else {
458                // tell the engine which instrument to load
459                pEngine->PrepareLoadInstrument(Filename.c_str(), uiInstrument);
460                // actually start to load the instrument (blocks until completed)
461                pEngine->LoadInstrument();
462            }
463        }
464        catch (LinuxSamplerException e) {
465             result.Error(e);
466        }
467        return result.Produce();
468  }  }
469    
470  /**  /**
471   * Will be called by the parser to load and deploy an engine.   * Will be called by the parser to load and deploy an engine.
472   */   */
473  String LSCPServer::LoadEngine(String EngineName, uint SamplerChannel) {  String LSCPServer::LoadEngine(String EngineName, uint uiSamplerChannel) {
474      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));
475      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result;
476        try {
477            Engine::type_t type;
478            if ((EngineName == "GigEngine") || (EngineName == "gig")) type = Engine::type_gig;
479            else throw LinuxSamplerException("Unknown engine type");
480            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
481            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
482            LockRTNotify();
483            pSamplerChannel->LoadEngine(type);
484            UnlockRTNotify();
485        }
486        catch (LinuxSamplerException e) {
487             result.Error(e);
488        }
489        return result.Produce();
490  }  }
491    
492  /**  /**
# Line 105  String LSCPServer::LoadEngine(String Eng Line 494  String LSCPServer::LoadEngine(String Eng
494   */   */
495  String LSCPServer::GetChannels() {  String LSCPServer::GetChannels() {
496      dmsg(2,("LSCPServer: GetChannels()\n"));      dmsg(2,("LSCPServer: GetChannels()\n"));
497      return "1\r\n";      LSCPResultSet result;
498        result.Add(pSampler->SamplerChannels());
499        return result.Produce();
500    }
501    
502    /**
503     * Will be called by the parser to get the list of sampler channels.
504     */
505    String LSCPServer::ListChannels() {
506        dmsg(2,("LSCPServer: ListChannels()\n"));
507        String list;
508        std::map<uint,SamplerChannel*> channels = pSampler->GetSamplerChannels();
509        std::map<uint,SamplerChannel*>::iterator iter = channels.begin();
510        for (; iter != channels.end(); iter++) {
511            if (list != "") list += ",";
512            list += ToString(iter->first);
513        }
514        LSCPResultSet result;
515        result.Add(list);
516        return result.Produce();
517  }  }
518    
519  /**  /**
# Line 113  String LSCPServer::GetChannels() { Line 521  String LSCPServer::GetChannels() {
521   */   */
522  String LSCPServer::AddChannel() {  String LSCPServer::AddChannel() {
523      dmsg(2,("LSCPServer: AddChannel()\n"));      dmsg(2,("LSCPServer: AddChannel()\n"));
524      return "ERR:0:Not implemented yet.\r\n";      SamplerChannel* pSamplerChannel = pSampler->AddSamplerChannel();
525        LSCPResultSet result(pSamplerChannel->Index());
526        return result.Produce();
527  }  }
528    
529  /**  /**
530   * Will be called by the parser to remove a sampler channel.   * Will be called by the parser to remove a sampler channel.
531   */   */
532  String LSCPServer::RemoveChannel(uint SamplerChannel) {  String LSCPServer::RemoveChannel(uint uiSamplerChannel) {
533      dmsg(2,("LSCPServer: RemoveChannel(SamplerChannel=%d)\n", SamplerChannel));      dmsg(2,("LSCPServer: RemoveChannel(SamplerChannel=%d)\n", uiSamplerChannel));
534      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result;
535        LockRTNotify();
536        pSampler->RemoveSamplerChannel(uiSamplerChannel);
537        UnlockRTNotify();
538        return result.Produce();
539  }  }
540    
541  /**  /**
# Line 129  String LSCPServer::RemoveChannel(uint Sa Line 543  String LSCPServer::RemoveChannel(uint Sa
543   */   */
544  String LSCPServer::GetAvailableEngines() {  String LSCPServer::GetAvailableEngines() {
545      dmsg(2,("LSCPServer: GetAvailableEngines()\n"));      dmsg(2,("LSCPServer: GetAvailableEngines()\n"));
546      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result("GigEngine");
547        return result.Produce();
548  }  }
549    
550  /**  /**
# Line 137  String LSCPServer::GetAvailableEngines() Line 552  String LSCPServer::GetAvailableEngines()
552   */   */
553  String LSCPServer::GetEngineInfo(String EngineName) {  String LSCPServer::GetEngineInfo(String EngineName) {
554      dmsg(2,("LSCPServer: GetEngineInfo(EngineName=%s)\n", EngineName.c_str()));      dmsg(2,("LSCPServer: GetEngineInfo(EngineName=%s)\n", EngineName.c_str()));
555      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result;
556        try {
557            if ((EngineName == "GigEngine") || (EngineName == "gig")) {
558                Engine* pEngine = new LinuxSampler::gig::Engine;
559                result.Add("DESCRIPTION", pEngine->Description());
560                result.Add("VERSION",     pEngine->Version());
561                delete pEngine;
562            }
563            else throw LinuxSamplerException("Unknown engine type");
564        }
565        catch (LinuxSamplerException e) {
566             result.Error(e);
567        }
568        return result.Produce();
569  }  }
570    
571  /**  /**
572   * Will be called by the parser to get informations about a particular   * Will be called by the parser to get informations about a particular
573   * sampler channel.   * sampler channel.
574   */   */
575  String LSCPServer::GetChannelInfo(uint SamplerChannel) {  String LSCPServer::GetChannelInfo(uint uiSamplerChannel) {
576      dmsg(2,("LSCPServer: GetChannelInfo(SamplerChannel=%d)\n", SamplerChannel));      dmsg(2,("LSCPServer: GetChannelInfo(SamplerChannel=%d)\n", uiSamplerChannel));
577      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result;
578        try {
579            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
580            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
581            Engine* pEngine = pSamplerChannel->GetEngine();
582    
583            //Defaults values
584            String EngineName = "NONE";
585            float Volume = 0.0f;
586            String InstrumentFileName = "NONE";
587            String InstrumentName = "NONE";
588            int InstrumentIndex = -1;
589            int InstrumentStatus = -1;
590            int AudioOutputChannels = 0;
591            String AudioRouting;
592    
593            if (pEngine) {
594                EngineName =  pEngine->EngineName();
595                AudioOutputChannels = pEngine->Channels();
596                Volume = pEngine->Volume();
597                InstrumentStatus = pEngine->InstrumentStatus();
598                InstrumentIndex = pEngine->InstrumentIndex();
599                if (InstrumentIndex != -1)
600                {
601                    InstrumentFileName = pEngine->InstrumentFileName();
602                    InstrumentName = pEngine->InstrumentName();
603                }
604                for (int chan = 0; chan < pEngine->Channels(); chan++) {
605                    if (AudioRouting != "") AudioRouting += ",";
606                    AudioRouting += ToString(pEngine->OutputChannel(chan));
607                }
608            }
609    
610            result.Add("ENGINE_NAME", EngineName);
611            result.Add("VOLUME", Volume);
612    
613            //Some not-so-hardcoded stuff to make GUI look good
614            result.Add("AUDIO_OUTPUT_DEVICE", GetAudioOutputDeviceIndex(pSamplerChannel->GetAudioOutputDevice()));
615            result.Add("AUDIO_OUTPUT_CHANNELS", AudioOutputChannels);
616            result.Add("AUDIO_OUTPUT_ROUTING", AudioRouting);
617    
618            result.Add("MIDI_INPUT_DEVICE", GetMidiInputDeviceIndex(pSamplerChannel->GetMidiInputDevice()));
619            result.Add("MIDI_INPUT_PORT", pSamplerChannel->GetMidiInputPort());
620            if (pSamplerChannel->GetMidiInputChannel() == MidiInputPort::midi_chan_all) result.Add("MIDI_INPUT_CHANNEL", "ALL");
621            else result.Add("MIDI_INPUT_CHANNEL", pSamplerChannel->GetMidiInputChannel());
622    
623            result.Add("INSTRUMENT_FILE", InstrumentFileName);
624            result.Add("INSTRUMENT_NR", InstrumentIndex);
625            result.Add("INSTRUMENT_NAME", InstrumentName);
626            result.Add("INSTRUMENT_STATUS", InstrumentStatus);
627        }
628        catch (LinuxSamplerException e) {
629             result.Error(e);
630        }
631        return result.Produce();
632  }  }
633    
634  /**  /**
635   * 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
636   * particular sampler channel.   * particular sampler channel.
637   */   */
638  String LSCPServer::GetVoiceCount(uint SamplerChannel) {  String LSCPServer::GetVoiceCount(uint uiSamplerChannel) {
639      dmsg(2,("LSCPServer: GetVoiceCount(SamplerChannel=%d)\n", SamplerChannel));      dmsg(2,("LSCPServer: GetVoiceCount(SamplerChannel=%d)\n", uiSamplerChannel));
640      return ToString(pEngine->ActiveVoiceCount) + "\r\n";      LSCPResultSet result;
641        try {
642            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
643            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
644            Engine* pEngine = pSamplerChannel->GetEngine();
645            if (!pEngine) throw LinuxSamplerException("No engine loaded on sampler channel");
646            result.Add(pEngine->VoiceCount());
647        }
648        catch (LinuxSamplerException e) {
649             result.Error(e);
650        }
651        return result.Produce();
652  }  }
653    
654  /**  /**
655   * 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
656   * particular sampler channel.   * particular sampler channel.
657   */   */
658  String LSCPServer::GetStreamCount(uint SamplerChannel) {  String LSCPServer::GetStreamCount(uint uiSamplerChannel) {
659      dmsg(2,("LSCPServer: GetStreamCount(SamplerChannel=%d)\n", SamplerChannel));      dmsg(2,("LSCPServer: GetStreamCount(SamplerChannel=%d)\n", uiSamplerChannel));
660      return ToString(pEngine->pDiskThread->ActiveStreamCount) + "\r\n";      LSCPResultSet result;
661        try {
662            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
663            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
664            Engine* pEngine = pSamplerChannel->GetEngine();
665            if (!pEngine) throw LinuxSamplerException("No engine loaded on sampler channel");
666            result.Add(pEngine->DiskStreamCount());
667        }
668        catch (LinuxSamplerException e) {
669             result.Error(e);
670        }
671        return result.Produce();
672  }  }
673    
674  /**  /**
675   * 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
676   * streams on a particular sampler channel.   * streams on a particular sampler channel.
677   */   */
678  String LSCPServer::GetBufferFill(fill_response_t ResponseType, uint SamplerChannel) {  String LSCPServer::GetBufferFill(fill_response_t ResponseType, uint uiSamplerChannel) {
679      dmsg(2,("LSCPServer: GetBufferFill(ResponseType=%d, SamplerChannel=%d)\n", ResponseType, SamplerChannel));      dmsg(2,("LSCPServer: GetBufferFill(ResponseType=%d, SamplerChannel=%d)\n", ResponseType, uiSamplerChannel));
680      return (ResponseType == fill_response_bytes) ? pEngine->pDiskThread->GetBufferFillBytes() + "\r\n"      LSCPResultSet result;
681                                                   : pEngine->pDiskThread->GetBufferFillPercentage() + "\r\n";      try {
682            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
683            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
684            Engine* pEngine = pSamplerChannel->GetEngine();
685            if (!pEngine) throw LinuxSamplerException("No engine loaded on sampler channel");
686            if (!pEngine->DiskStreamSupported())
687                result.Add("NA");
688            else {
689                switch (ResponseType) {
690                    case fill_response_bytes:
691                        result.Add(pEngine->DiskStreamBufferFillBytes());
692                        break;
693                    case fill_response_percentage:
694                        result.Add(pEngine->DiskStreamBufferFillPercentage());
695                        break;
696                    default:
697                        throw LinuxSamplerException("Unknown fill response type");
698                }
699            }
700        }
701        catch (LinuxSamplerException e) {
702             result.Error(e);
703        }
704        return result.Produce();
705  }  }
706    
707  /**  String LSCPServer::GetAvailableAudioOutputDrivers() {
708   * Will be called by the parser to change the audio output type on a      dmsg(2,("LSCPServer: GetAvailableAudioOutputDrivers()\n"));
709   * particular sampler channel.      LSCPResultSet result;
710   */      try {
711  String LSCPServer::SetAudioOutputType(audio_output_type_t AudioOutputType, uint SamplerChannel) {          String s = AudioOutputDeviceFactory::AvailableDriversAsString();
712      dmsg(2,("LSCPServer: SetAudioOutputType(AudioOutputType=%d, SamplerChannel=%d)\n", AudioOutputType, SamplerChannel));          result.Add(s);
713      return "ERR:0:Not implemented yet.\r\n";      }
714        catch (LinuxSamplerException e) {
715            result.Error(e);
716        }
717        return result.Produce();
718    }
719    
720    String LSCPServer::GetAvailableMidiInputDrivers() {
721        dmsg(2,("LSCPServer: GetAvailableMidiInputDrivers()\n"));
722        LSCPResultSet result;
723        try {
724            String s = MidiInputDeviceFactory::AvailableDriversAsString();
725            result.Add(s);
726        }
727        catch (LinuxSamplerException e) {
728            result.Error(e);
729        }
730        return result.Produce();
731    }
732    
733    String LSCPServer::GetMidiInputDriverInfo(String Driver) {
734        dmsg(2,("LSCPServer: GetMidiInputDriverInfo(Driver=%s)\n",Driver.c_str()));
735        LSCPResultSet result;
736        try {
737            result.Add("DESCRIPTION", MidiInputDeviceFactory::GetDriverDescription(Driver));
738            result.Add("VERSION",     MidiInputDeviceFactory::GetDriverVersion(Driver));
739    
740            std::map<String,DeviceCreationParameter*> parameters = MidiInputDeviceFactory::GetAvailableDriverParameters(Driver);
741            if (parameters.size()) { // if there are parameters defined for this driver
742                String s;
743                std::map<String,DeviceCreationParameter*>::iterator iter = parameters.begin();
744                for (;iter != parameters.end(); iter++) {
745                    if (s != "") s += ",";
746                    s += iter->first;
747                }
748                result.Add("PARAMETERS", s);
749            }
750        }
751        catch (LinuxSamplerException e) {
752            result.Error(e);
753        }
754        return result.Produce();
755    }
756    
757    String LSCPServer::GetAudioOutputDriverInfo(String Driver) {
758        dmsg(2,("LSCPServer: GetAudioOutputDriverInfo(Driver=%s)\n",Driver.c_str()));
759        LSCPResultSet result;
760        try {
761            result.Add("DESCRIPTION", AudioOutputDeviceFactory::GetDriverDescription(Driver));
762            result.Add("VERSION",     AudioOutputDeviceFactory::GetDriverVersion(Driver));
763    
764            std::map<String,DeviceCreationParameter*> parameters = AudioOutputDeviceFactory::GetAvailableDriverParameters(Driver);
765            if (parameters.size()) { // if there are parameters defined for this driver
766                String s;
767                std::map<String,DeviceCreationParameter*>::iterator iter = parameters.begin();
768                for (;iter != parameters.end(); iter++) {
769                    if (s != "") s += ",";
770                    s += iter->first;
771                }
772                result.Add("PARAMETERS", s);
773            }
774        }
775        catch (LinuxSamplerException e) {
776            result.Error(e);
777        }
778        return result.Produce();
779    }
780    
781    String LSCPServer::GetMidiInputDriverParameterInfo(String Driver, String Parameter, std::map<String,String> DependencyList) {
782        dmsg(2,("LSCPServer: GetMidiInputDriverParameterInfo(Driver=%s,Parameter=%s,DependencyListSize=%d)\n",Driver.c_str(),Parameter.c_str(),DependencyList.size()));
783        LSCPResultSet result;
784        try {
785            DeviceCreationParameter* pParameter = MidiInputDeviceFactory::GetDriverParameter(Driver, Parameter);
786            result.Add("TYPE",         pParameter->Type());
787            result.Add("DESCRIPTION",  pParameter->Description());
788            result.Add("MANDATORY",    pParameter->Mandatory());
789            result.Add("FIX",          pParameter->Fix());
790            result.Add("MULTIPLICITY", pParameter->Multiplicity());
791            optional<String> oDepends       = pParameter->Depends();
792            optional<String> oDefault       = pParameter->Default(DependencyList);
793            optional<String> oRangeMin      = pParameter->RangeMin(DependencyList);
794            optional<String> oRangeMax      = pParameter->RangeMax(DependencyList);
795            optional<String> oPossibilities = pParameter->Possibilities(DependencyList);
796            if (oDepends)       result.Add("DEPENDS",       *oDepends);
797            if (oDefault)       result.Add("DEFAULT",       *oDefault);
798            if (oRangeMin)      result.Add("RANGE_MIN",     *oRangeMin);
799            if (oRangeMax)      result.Add("RANGE_MAX",     *oRangeMax);
800            if (oPossibilities) result.Add("POSSIBILITIES", *oPossibilities);
801        }
802        catch (LinuxSamplerException e) {
803            result.Error(e);
804        }
805        return result.Produce();
806    }
807    
808    String LSCPServer::GetAudioOutputDriverParameterInfo(String Driver, String Parameter, std::map<String,String> DependencyList) {
809        dmsg(2,("LSCPServer: GetAudioOutputDriverParameterInfo(Driver=%s,Parameter=%s,DependencyListSize=%d)\n",Driver.c_str(),Parameter.c_str(),DependencyList.size()));
810        LSCPResultSet result;
811        try {
812            DeviceCreationParameter* pParameter = AudioOutputDeviceFactory::GetDriverParameter(Driver, Parameter);
813            result.Add("TYPE",         pParameter->Type());
814            result.Add("DESCRIPTION",  pParameter->Description());
815            result.Add("MANDATORY",    pParameter->Mandatory());
816            result.Add("FIX",          pParameter->Fix());
817            result.Add("MULTIPLICITY", pParameter->Multiplicity());
818            optional<String> oDepends       = pParameter->Depends();
819            optional<String> oDefault       = pParameter->Default(DependencyList);
820            optional<String> oRangeMin      = pParameter->RangeMin(DependencyList);
821            optional<String> oRangeMax      = pParameter->RangeMax(DependencyList);
822            optional<String> oPossibilities = pParameter->Possibilities(DependencyList);
823            if (oDepends)       result.Add("DEPENDS",       *oDepends);
824            if (oDefault)       result.Add("DEFAULT",       *oDefault);
825            if (oRangeMin)      result.Add("RANGE_MIN",     *oRangeMin);
826            if (oRangeMax)      result.Add("RANGE_MAX",     *oRangeMax);
827            if (oPossibilities) result.Add("POSSIBILITIES", *oPossibilities);
828        }
829        catch (LinuxSamplerException e) {
830            result.Error(e);
831        }
832        return result.Produce();
833    }
834    
835    String LSCPServer::GetAudioOutputDeviceCount() {
836        dmsg(2,("LSCPServer: GetAudioOutputDeviceCount()\n"));
837        LSCPResultSet result;
838        try {
839            uint count = pSampler->AudioOutputDevices();
840            result.Add(count); // success
841        }
842        catch (LinuxSamplerException e) {
843            result.Error(e);
844        }
845        return result.Produce();
846    }
847    
848    String LSCPServer::GetMidiInputDeviceCount() {
849        dmsg(2,("LSCPServer: GetMidiInputDeviceCount()\n"));
850        LSCPResultSet result;
851        try {
852            uint count = pSampler->MidiInputDevices();
853            result.Add(count); // success
854        }
855        catch (LinuxSamplerException e) {
856            result.Error(e);
857        }
858        return result.Produce();
859    }
860    
861    String LSCPServer::GetAudioOutputDevices() {
862        dmsg(2,("LSCPServer: GetAudioOutputDevices()\n"));
863        LSCPResultSet result;
864        try {
865            String s;
866            std::map<uint, AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
867            std::map<uint, AudioOutputDevice*>::iterator iter = devices.begin();
868            for (; iter != devices.end(); iter++) {
869                if (s != "") s += ",";
870                s += ToString(iter->first);
871            }
872            result.Add(s);
873        }
874        catch (LinuxSamplerException e) {
875            result.Error(e);
876        }
877        return result.Produce();
878    }
879    
880    String LSCPServer::GetMidiInputDevices() {
881        dmsg(2,("LSCPServer: GetMidiInputDevices()\n"));
882        LSCPResultSet result;
883        try {
884            String s;
885            std::map<uint, MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
886            std::map<uint, MidiInputDevice*>::iterator iter = devices.begin();
887            for (; iter != devices.end(); iter++) {
888                if (s != "") s += ",";
889                s += ToString(iter->first);
890            }
891            result.Add(s);
892        }
893        catch (LinuxSamplerException e) {
894            result.Error(e);
895        }
896        return result.Produce();
897    }
898    
899    String LSCPServer::GetAudioOutputDeviceInfo(uint DeviceIndex) {
900        dmsg(2,("LSCPServer: GetAudioOutputDeviceInfo(DeviceIndex=%d)\n",DeviceIndex));
901        LSCPResultSet result;
902        try {
903            std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
904            if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceIndex) + ".");
905            AudioOutputDevice* pDevice = devices[DeviceIndex];
906            result.Add("DRIVER", pDevice->Driver());
907            std::map<String,DeviceCreationParameter*> parameters = pDevice->DeviceParameters();
908            std::map<String,DeviceCreationParameter*>::iterator iter = parameters.begin();
909            for (; iter != parameters.end(); iter++) {
910                result.Add(iter->first, iter->second->Value());
911            }
912        }
913        catch (LinuxSamplerException e) {
914            result.Error(e);
915        }
916        return result.Produce();
917    }
918    
919    String LSCPServer::GetMidiInputDeviceInfo(uint DeviceIndex) {
920        dmsg(2,("LSCPServer: GetMidiInputDeviceInfo(DeviceIndex=%d)\n",DeviceIndex));
921        LSCPResultSet result;
922        try {
923            std::map<uint,MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
924            if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(DeviceIndex) + ".");
925            MidiInputDevice* pDevice = devices[DeviceIndex];
926            result.Add("DRIVER", pDevice->Driver());
927            std::map<String,DeviceCreationParameter*> parameters = pDevice->DeviceParameters();
928            std::map<String,DeviceCreationParameter*>::iterator iter = parameters.begin();
929            for (; iter != parameters.end(); iter++) {
930                result.Add(iter->first, iter->second->Value());
931            }
932        }
933        catch (LinuxSamplerException e) {
934            result.Error(e);
935        }
936        return result.Produce();
937    }
938    String LSCPServer::GetMidiInputPortInfo(uint DeviceIndex, uint PortIndex) {
939        dmsg(2,("LSCPServer: GetMidiInputPortInfo(DeviceIndex=%d, PortIndex=%d)\n",DeviceIndex, PortIndex));
940        LSCPResultSet result;
941        try {
942            // get MIDI input device
943            std::map<uint,MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
944            if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(DeviceIndex) + ".");
945            MidiInputDevice* pDevice = devices[DeviceIndex];
946    
947            // get MIDI port
948            MidiInputPort* pMidiInputPort = pDevice->GetPort(PortIndex);
949            if (!pMidiInputPort) throw LinuxSamplerException("There is no MIDI input port with index " + ToString(PortIndex) + ".");
950    
951            // return the values of all MIDI port parameters
952            std::map<String,DeviceRuntimeParameter*> parameters = pMidiInputPort->PortParameters();
953            std::map<String,DeviceRuntimeParameter*>::iterator iter = parameters.begin();
954            for (; iter != parameters.end(); iter++) {
955                result.Add(iter->first, iter->second->Value());
956            }
957        }
958        catch (LinuxSamplerException e) {
959            result.Error(e);
960        }
961        return result.Produce();
962    }
963    
964    String LSCPServer::GetAudioOutputChannelInfo(uint DeviceId, uint ChannelId) {
965        dmsg(2,("LSCPServer: GetAudioOutputChannelInfo(DeviceId=%d,ChannelId)\n",DeviceId,ChannelId));
966        LSCPResultSet result;
967        try {
968            // get audio output device
969            std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
970            if (!devices.count(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 audio channel " + ToString(ChannelId) + ".");
976    
977            // return the values of all audio channel parameters
978            std::map<String,DeviceRuntimeParameter*> parameters = pChannel->ChannelParameters();
979            std::map<String,DeviceRuntimeParameter*>::iterator iter = parameters.begin();
980            for (; iter != parameters.end(); iter++) {
981                result.Add(iter->first, iter->second->Value());
982            }
983        }
984        catch (LinuxSamplerException e) {
985            result.Error(e);
986        }
987        return result.Produce();
988    }
989    
990    String LSCPServer::GetMidiInputPortParameterInfo(uint DeviceId, uint PortId, String ParameterName) {
991        dmsg(2,("LSCPServer: GetMidiInputPortParameterInfo(DeviceId=%d,PortId=%d,ParameterName=%s)\n",DeviceId,PortId,ParameterName.c_str()));
992        LSCPResultSet result;
993        try {
994            // get MIDI input device
995            std::map<uint,MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
996            if (!devices.count(DeviceId)) throw LinuxSamplerException("There is no midi input device with index " + ToString(DeviceId) + ".");
997            MidiInputDevice* pDevice = devices[DeviceId];
998    
999            // get midi port
1000            MidiInputPort* pPort = pDevice->GetPort(PortId);
1001            if (!pPort) throw LinuxSamplerException("Midi input device does not have port " + ToString(PortId) + ".");
1002    
1003            // get desired port parameter
1004            std::map<String,DeviceRuntimeParameter*> parameters = pPort->PortParameters();
1005            if (!parameters.count(ParameterName)) throw LinuxSamplerException("Midi port does not provide a parameter '" + ParameterName + "'.");
1006            DeviceRuntimeParameter* pParameter = parameters[ParameterName];
1007    
1008            // return all fields of this audio channel parameter
1009            result.Add("TYPE",         pParameter->Type());
1010            result.Add("DESCRIPTION",  pParameter->Description());
1011            result.Add("FIX",          pParameter->Fix());
1012            result.Add("MULTIPLICITY", pParameter->Multiplicity());
1013            if (pParameter->RangeMin())      result.Add("RANGE_MIN",     *pParameter->RangeMin());
1014            if (pParameter->RangeMax())      result.Add("RANGE_MAX",     *pParameter->RangeMax());
1015            if (pParameter->Possibilities()) result.Add("POSSIBILITIES", *pParameter->Possibilities());
1016        }
1017        catch (LinuxSamplerException e) {
1018            result.Error(e);
1019        }
1020        return result.Produce();
1021    }
1022    
1023    String LSCPServer::GetAudioOutputChannelParameterInfo(uint DeviceId, uint ChannelId, String ParameterName) {
1024        dmsg(2,("LSCPServer: GetAudioOutputChannelParameterInfo(DeviceId=%d,ChannelId=%d,ParameterName=%s)\n",DeviceId,ChannelId,ParameterName.c_str()));
1025        LSCPResultSet result;
1026        try {
1027            // get audio output device
1028            std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
1029            if (!devices.count(DeviceId)) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceId) + ".");
1030            AudioOutputDevice* pDevice = devices[DeviceId];
1031    
1032            // get audio channel
1033            AudioChannel* pChannel = pDevice->Channel(ChannelId);
1034            if (!pChannel) throw LinuxSamplerException("Audio output device does not have audio channel " + ToString(ChannelId) + ".");
1035    
1036            // get desired audio channel parameter
1037            std::map<String,DeviceRuntimeParameter*> parameters = pChannel->ChannelParameters();
1038            if (!parameters.count(ParameterName)) throw LinuxSamplerException("Audio channel does not provide a parameter '" + ParameterName + "'.");
1039            DeviceRuntimeParameter* pParameter = parameters[ParameterName];
1040    
1041            // return all fields of this audio channel parameter
1042            result.Add("TYPE",         pParameter->Type());
1043            result.Add("DESCRIPTION",  pParameter->Description());
1044            result.Add("FIX",          pParameter->Fix());
1045            result.Add("MULTIPLICITY", pParameter->Multiplicity());
1046            if (pParameter->RangeMin())      result.Add("RANGE_MIN",     *pParameter->RangeMin());
1047            if (pParameter->RangeMax())      result.Add("RANGE_MAX",     *pParameter->RangeMax());
1048            if (pParameter->Possibilities()) result.Add("POSSIBILITIES", *pParameter->Possibilities());
1049        }
1050        catch (LinuxSamplerException e) {
1051            result.Error(e);
1052        }
1053        return result.Produce();
1054    }
1055    
1056    String LSCPServer::SetAudioOutputChannelParameter(uint DeviceId, uint ChannelId, String ParamKey, String ParamVal) {
1057        dmsg(2,("LSCPServer: SetAudioOutputChannelParameter(DeviceId=%d,ChannelId=%d,ParamKey=%s,ParamVal=%s)\n",DeviceId,ChannelId,ParamKey.c_str(),ParamVal.c_str()));
1058        LSCPResultSet result;
1059        try {
1060            // get audio output device
1061            std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
1062            if (!devices.count(DeviceId)) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceId) + ".");
1063            AudioOutputDevice* pDevice = devices[DeviceId];
1064    
1065            // get audio channel
1066            AudioChannel* pChannel = pDevice->Channel(ChannelId);
1067            if (!pChannel) throw LinuxSamplerException("Audio output device does not have audio channel " + ToString(ChannelId) + ".");
1068    
1069            // get desired audio channel parameter
1070            std::map<String,DeviceRuntimeParameter*> parameters = pChannel->ChannelParameters();
1071            if (!parameters.count(ParamKey)) throw LinuxSamplerException("Audio channel does not provide a parameter '" + ParamKey + "'.");
1072            DeviceRuntimeParameter* pParameter = parameters[ParamKey];
1073    
1074            // set new channel parameter value
1075            pParameter->SetValue(ParamVal);
1076        }
1077        catch (LinuxSamplerException e) {
1078            result.Error(e);
1079        }
1080        return result.Produce();
1081    }
1082    
1083    String LSCPServer::SetAudioOutputDeviceParameter(uint DeviceIndex, String ParamKey, String ParamVal) {
1084        dmsg(2,("LSCPServer: SetAudioOutputDeviceParameter(DeviceIndex=%d,ParamKey=%s,ParamVal=%s)\n",DeviceIndex,ParamKey.c_str(),ParamVal.c_str()));
1085        LSCPResultSet result;
1086        try {
1087            std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
1088            if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceIndex) + ".");
1089            AudioOutputDevice* pDevice = devices[DeviceIndex];
1090            std::map<String,DeviceCreationParameter*> parameters = pDevice->DeviceParameters();
1091            if (!parameters.count(ParamKey)) throw LinuxSamplerException("Audio output device " + ToString(DeviceIndex) + " does not have a device parameter '" + ParamKey + "'");
1092            parameters[ParamKey]->SetValue(ParamVal);
1093        }
1094        catch (LinuxSamplerException e) {
1095            result.Error(e);
1096        }
1097        return result.Produce();
1098    }
1099    
1100    String LSCPServer::SetMidiInputDeviceParameter(uint DeviceIndex, String ParamKey, String ParamVal) {
1101        dmsg(2,("LSCPServer: SetMidiOutputDeviceParameter(DeviceIndex=%d,ParamKey=%s,ParamVal=%s)\n",DeviceIndex,ParamKey.c_str(),ParamVal.c_str()));
1102        LSCPResultSet result;
1103        try {
1104            std::map<uint,MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
1105            if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(DeviceIndex) + ".");
1106            MidiInputDevice* pDevice = devices[DeviceIndex];
1107            std::map<String,DeviceCreationParameter*> parameters = pDevice->DeviceParameters();
1108            if (!parameters.count(ParamKey)) throw LinuxSamplerException("MIDI input device " + ToString(DeviceIndex) + " does not have a device parameter '" + ParamKey + "'");
1109            parameters[ParamKey]->SetValue(ParamVal);
1110        }
1111        catch (LinuxSamplerException e) {
1112            result.Error(e);
1113        }
1114        return result.Produce();
1115    }
1116    
1117    String LSCPServer::SetMidiInputPortParameter(uint DeviceIndex, uint PortIndex, String ParamKey, String ParamVal) {
1118        dmsg(2,("LSCPServer: SetMidiOutputDeviceParameter(DeviceIndex=%d,ParamKey=%s,ParamVal=%s)\n",DeviceIndex,ParamKey.c_str(),ParamVal.c_str()));
1119        LSCPResultSet result;
1120        try {
1121            // get MIDI input device
1122            std::map<uint,MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
1123            if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(DeviceIndex) + ".");
1124            MidiInputDevice* pDevice = devices[DeviceIndex];
1125    
1126            // get MIDI port
1127            MidiInputPort* pMidiInputPort = pDevice->GetPort(PortIndex);
1128            if (!pMidiInputPort) throw LinuxSamplerException("There is no MIDI input port with index " + ToString(PortIndex) + ".");
1129    
1130            // set port parameter value
1131            std::map<String,DeviceRuntimeParameter*> parameters = pMidiInputPort->PortParameters();
1132            if (!parameters.count(ParamKey)) throw LinuxSamplerException("MIDI input device " + ToString(PortIndex) + " does not have a parameter '" + ParamKey + "'");
1133            parameters[ParamKey]->SetValue(ParamVal);
1134        }
1135        catch (LinuxSamplerException e) {
1136            result.Error(e);
1137        }
1138        return result.Produce();
1139  }  }
1140    
1141  /**  /**
1142   * 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
1143   * playback on a particular sampler channel.   * playback on a particular sampler channel.
1144   */   */
1145  String LSCPServer::SetAudioOutputChannel(uint AudioOutputChannel, uint SamplerChannel) {  String LSCPServer::SetAudioOutputChannel(uint ChannelAudioOutputChannel, uint AudioOutputDeviceInputChannel, uint uiSamplerChannel) {
1146      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));
1147      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result;
1148        try {
1149            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1150            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1151            Engine* pEngine = pSamplerChannel->GetEngine();
1152            if (!pEngine) throw LinuxSamplerException("No engine deployed on sampler channel " + ToString(uiSamplerChannel));
1153            if (!pSamplerChannel->GetAudioOutputDevice()) throw LinuxSamplerException("No audio output device connected to sampler channel " + ToString(uiSamplerChannel));
1154            pEngine->SetOutputChannel(ChannelAudioOutputChannel, AudioOutputDeviceInputChannel);
1155        }
1156        catch (LinuxSamplerException e) {
1157             result.Error(e);
1158        }
1159        return result.Produce();
1160  }  }
1161    
1162  /**  String LSCPServer::SetAudioOutputDevice(uint AudioDeviceId, uint uiSamplerChannel) {
1163   * 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));
1164   * engine of a particular sampler channel should listen to.      LSCPResultSet result;
1165   */      try {
1166  String LSCPServer::SetMIDIInputPort(String MIDIInputPort, uint Samplerchannel) {          SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1167      dmsg(2,("LSCPServer: SetMIDIInputPort(MIDIInputPort=%s, Samplerchannel=%d)\n", MIDIInputPort.c_str(), Samplerchannel));          if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1168      return "ERR:0:Not implemented yet.\r\n";          std::map<uint, AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
1169            if (!devices.count(AudioDeviceId)) throw LinuxSamplerException("There is no audio output device with index " + ToString(AudioDeviceId));
1170            AudioOutputDevice* pDevice = devices[AudioDeviceId];
1171            pSamplerChannel->SetAudioOutputDevice(pDevice);
1172        }
1173        catch (LinuxSamplerException e) {
1174             result.Error(e);
1175        }
1176        return result.Produce();
1177    }
1178    
1179    String LSCPServer::SetAudioOutputType(String AudioOutputDriver, uint uiSamplerChannel) {
1180        dmsg(2,("LSCPServer: SetAudioOutputType(String AudioOutputDriver=%s, SamplerChannel=%d)\n",AudioOutputDriver.c_str(),uiSamplerChannel));
1181        LSCPResultSet result;
1182        try {
1183            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1184            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1185            // Driver type name aliasing...
1186            if (AudioOutputDriver == "Alsa") AudioOutputDriver = "ALSA";
1187            if (AudioOutputDriver == "Jack") AudioOutputDriver = "JACK";
1188            // Check if there's one audio output device already created
1189            // for the intended audio driver type (AudioOutputDriver)...
1190            AudioOutputDevice *pDevice = NULL;
1191            std::map<uint, AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
1192            std::map<uint, AudioOutputDevice*>::iterator iter = devices.begin();
1193            for (; iter != devices.end(); iter++) {
1194                if ((iter->second)->Driver() == AudioOutputDriver) {
1195                    pDevice = iter->second;
1196                    break;
1197                }
1198            }
1199            // If it doesn't exist, create a new one with default parameters...
1200            if (pDevice == NULL) {
1201                std::map<String,String> params;
1202                pDevice = pSampler->CreateAudioOutputDevice(AudioOutputDriver, params);
1203            }
1204            // Must have a device...
1205            if (pDevice == NULL)
1206                throw LinuxSamplerException("Internal error: could not create audio output device.");
1207            // Set it as the current channel device...
1208            pSamplerChannel->SetAudioOutputDevice(pDevice);
1209        }
1210        catch (LinuxSamplerException e) {
1211             result.Error(e);
1212        }
1213        return result.Produce();
1214    }
1215    
1216    String LSCPServer::SetMIDIInputPort(uint MIDIPort, uint uiSamplerChannel) {
1217        dmsg(2,("LSCPServer: SetMIDIInputPort(MIDIPort=%d, SamplerChannel=%d)\n",MIDIPort,uiSamplerChannel));
1218        LSCPResultSet result;
1219        try {
1220            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1221            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1222            pSamplerChannel->SetMidiInputPort(MIDIPort);
1223        }
1224        catch (LinuxSamplerException e) {
1225             result.Error(e);
1226        }
1227        return result.Produce();
1228    }
1229    
1230    String LSCPServer::SetMIDIInputChannel(uint MIDIChannel, uint uiSamplerChannel) {
1231        dmsg(2,("LSCPServer: SetMIDIInputChannel(MIDIChannel=%d, SamplerChannel=%d)\n",MIDIChannel,uiSamplerChannel));
1232        LSCPResultSet result;
1233        try {
1234            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1235            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1236            pSamplerChannel->SetMidiInputChannel((MidiInputPort::midi_chan_t) MIDIChannel);
1237        }
1238        catch (LinuxSamplerException e) {
1239             result.Error(e);
1240        }
1241        return result.Produce();
1242    }
1243    
1244    String LSCPServer::SetMIDIInputDevice(uint MIDIDeviceId, uint uiSamplerChannel) {
1245        dmsg(2,("LSCPServer: SetMIDIInputDevice(MIDIDeviceId=%d, SamplerChannel=%d)\n",MIDIDeviceId,uiSamplerChannel));
1246        LSCPResultSet result;
1247        try {
1248            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1249            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1250            std::map<uint, MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
1251            if (!devices.count(MIDIDeviceId)) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(MIDIDeviceId));
1252            MidiInputDevice* pDevice = devices[MIDIDeviceId];
1253            pSamplerChannel->SetMidiInputDevice(pDevice);
1254        }
1255        catch (LinuxSamplerException e) {
1256             result.Error(e);
1257        }
1258        return result.Produce();
1259    }
1260    
1261    String LSCPServer::SetMIDIInputType(String MidiInputDriver, uint uiSamplerChannel) {
1262        dmsg(2,("LSCPServer: SetMIDIInputType(String MidiInputDriver=%s, SamplerChannel=%d)\n",MidiInputDriver.c_str(),uiSamplerChannel));
1263        LSCPResultSet result;
1264        try {
1265            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1266            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1267            // Driver type name aliasing...
1268            if (MidiInputDriver == "Alsa") MidiInputDriver = "ALSA";
1269            // Check if there's one MIDI input device already created
1270            // for the intended MIDI driver type (MidiInputDriver)...
1271            MidiInputDevice *pDevice = NULL;
1272            std::map<uint, MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
1273            std::map<uint, MidiInputDevice*>::iterator iter = devices.begin();
1274            for (; iter != devices.end(); iter++) {
1275                if ((iter->second)->Driver() == MidiInputDriver) {
1276                    pDevice = iter->second;
1277                    break;
1278                }
1279            }
1280            // If it doesn't exist, create a new one with default parameters...
1281            if (pDevice == NULL) {
1282                std::map<String,String> params;
1283                pDevice = pSampler->CreateMidiInputDevice(MidiInputDriver, params);
1284                // Make it with at least one initial port.
1285                std::map<String,DeviceCreationParameter*> parameters = pDevice->DeviceParameters();
1286                parameters["PORTS"]->SetValue("1");
1287            }
1288            // Must have a device...
1289            if (pDevice == NULL)
1290                throw LinuxSamplerException("Internal error: could not create MIDI input device.");
1291            // Set it as the current channel device...
1292            pSamplerChannel->SetMidiInputDevice(pDevice);
1293        }
1294        catch (LinuxSamplerException e) {
1295             result.Error(e);
1296        }
1297        return result.Produce();
1298  }  }
1299    
1300  /**  /**
1301   * 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
1302   * engine of a particular sampler channel should listen to.   * engine of a particular sampler channel should listen to.
1303   */   */
1304  String LSCPServer::SetMIDIInputChannel(uint MIDIChannel, uint SamplerChannel) {  String LSCPServer::SetMIDIInput(uint MIDIDeviceId, uint MIDIPort, uint MIDIChannel, uint uiSamplerChannel) {
1305      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));
1306      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result;
1307        try {
1308            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1309            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1310            std::map<uint, MidiInputDevice*> devices =  pSampler->GetMidiInputDevices();
1311            if (!devices.count(MIDIDeviceId)) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(MIDIDeviceId));
1312            MidiInputDevice* pDevice = devices[MIDIDeviceId];
1313            pSamplerChannel->SetMidiInput(pDevice, MIDIPort, (MidiInputPort::midi_chan_t) MIDIChannel);
1314        }
1315        catch (LinuxSamplerException e) {
1316             result.Error(e);
1317        }
1318        return result.Produce();
1319  }  }
1320    
1321  /**  /**
1322   * 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
1323   * particular sampler channel.   * particular sampler channel.
1324   */   */
1325  String LSCPServer::SetVolume(double Volume, uint SamplerChannel) {  String LSCPServer::SetVolume(double dVolume, uint uiSamplerChannel) {
1326      dmsg(2,("LSCPServer: SetVolume(Volume=%f, SamplerChannel=%d)\n", Volume, SamplerChannel));      dmsg(2,("LSCPServer: SetVolume(Volume=%f, SamplerChannel=%d)\n", dVolume, uiSamplerChannel));
1327      pEngine->Volume = Volume;      LSCPResultSet result;
1328      return "OK\r\n";      try {
1329            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1330            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1331            Engine* pEngine = pSamplerChannel->GetEngine();
1332            if (!pEngine) throw LinuxSamplerException("No engine loaded on sampler channel");
1333            pEngine->Volume(dVolume);
1334        }
1335        catch (LinuxSamplerException e) {
1336             result.Error(e);
1337        }
1338        return result.Produce();
1339  }  }
1340    
1341  /**  /**
1342   * Will be called by the parser to reset a particular sampler channel.   * Will be called by the parser to reset a particular sampler channel.
1343   */   */
1344  String LSCPServer::ResetChannel(uint SamplerChannel) {  String LSCPServer::ResetChannel(uint uiSamplerChannel) {
1345      dmsg(2,("LSCPServer: ResetChannel(SamplerChannel=%d)\n", SamplerChannel));      dmsg(2,("LSCPServer: ResetChannel(SamplerChannel=%d)\n", uiSamplerChannel));
1346      pEngine->Reset();      LSCPResultSet result;
1347      return "OK\r\n";      try {
1348            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1349            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1350            Engine* pEngine = pSamplerChannel->GetEngine();
1351            if (!pEngine) throw LinuxSamplerException("No engine loaded on sampler channel");
1352            pEngine->Reset();
1353        }
1354        catch (LinuxSamplerException e) {
1355             result.Error(e);
1356        }
1357        return result.Produce();
1358    }
1359    
1360    /**
1361     * Will be called by the parser to reset the whole sampler.
1362     */
1363    String LSCPServer::ResetSampler() {
1364        dmsg(2,("LSCPServer: ResetSampler()\n"));
1365        pSampler->Reset();
1366        LSCPResultSet result;
1367        return result.Produce();
1368  }  }
1369    
1370  /**  /**
1371   * 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
1372   * server for receiving event messages.   * server for receiving event messages.
1373   */   */
1374  String LSCPServer::SubscribeNotification(uint UDPPort) {  String LSCPServer::SubscribeNotification(LSCPEvent::event_t type) {
1375      dmsg(2,("LSCPServer: SubscribeNotification(UDPPort=%d)\n", UDPPort));      dmsg(2,("LSCPServer: SubscribeNotification(Event=%s)\n", LSCPEvent::Name(type).c_str()));
1376      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result;
1377        SubscriptionMutex.Lock();
1378        eventSubscriptions[type].push_back(currentSocket);
1379        SubscriptionMutex.Unlock();
1380        return result.Produce();
1381  }  }
1382    
1383  /**  /**
1384   * 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
1385   * for not receiving further event messages.   * for not receiving further event messages.
1386   */   */
1387  String LSCPServer::UnsubscribeNotification(String SessionID) {  String LSCPServer::UnsubscribeNotification(LSCPEvent::event_t type) {
1388      dmsg(2,("LSCPServer: UnsubscribeNotification(SessionID=%s)\n", SessionID.c_str()));      dmsg(2,("LSCPServer: UnsubscribeNotification(Event=%s)\n", LSCPEvent::Name(type).c_str()));
1389      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result;
1390        SubscriptionMutex.Lock();
1391        eventSubscriptions[type].remove(currentSocket);
1392        SubscriptionMutex.Unlock();
1393        return result.Produce();
1394    }
1395    
1396    /**
1397     * Will be called by the parser to enable or disable echo mode; if echo
1398     * mode is enabled, all commands from the client will (immediately) be
1399     * echoed back to the client.
1400     */
1401    String LSCPServer::SetEcho(yyparse_param_t* pSession, double boolean_value) {
1402        dmsg(2,("LSCPServer: SetEcho(val=%f)\n", boolean_value));
1403        LSCPResultSet result;
1404        try {
1405            if      (boolean_value == 0) pSession->bVerbose = false;
1406            else if (boolean_value == 1) pSession->bVerbose = true;
1407            else throw LinuxSamplerException("Not a boolean value, must either be 0 or 1");
1408        }
1409        catch (LinuxSamplerException e) {
1410             result.Error(e);
1411        }
1412        return result.Produce();
1413  }  }
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