/[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 563 by schoenebeck, Sun May 22 20:43:32 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    //#include "../common/global.h"
28    
29    #include <fcntl.h>
30    
31    #if HAVE_SQLITE3
32    # include "sqlite3.h"
33    #endif
34    
35    #include "../engines/EngineFactory.h"
36    #include "../drivers/audio/AudioOutputDeviceFactory.h"
37    #include "../drivers/midi/MidiInputDeviceFactory.h"
38    
39  LSCPServer::LSCPServer(AudioThread* pEngine) : Thread(false, 0, -4) {  /**
40      this->pEngine = pEngine;   * Below are a few static members of the LSCPServer class.
41     * The big assumption here is that LSCPServer is going to remain a singleton.
42     * These members are used to support client connections.
43     * Class handles multiple connections at the same time using select() and non-blocking recv()
44     * Commands are processed by a single LSCPServer thread.
45     * Notifications are delivered either by the thread that originated them
46     * or (if the resultset is currently in progress) by the LSCPServer thread
47     * after the resultset was sent out.
48     * This makes sure that resultsets can not be interrupted by notifications.
49     * This also makes sure that the thread sending notification is not blocked
50     * by the LSCPServer thread.
51     */
52    fd_set LSCPServer::fdSet;
53    int LSCPServer::currentSocket = -1;
54    std::vector<yyparse_param_t> LSCPServer::Sessions = std::vector<yyparse_param_t>();
55    std::map<int,String> LSCPServer::bufferedNotifies = std::map<int,String>();
56    std::map<int,String> LSCPServer::bufferedCommands = std::map<int,String>();
57    std::map< LSCPEvent::event_t, std::list<int> > LSCPServer::eventSubscriptions = std::map< LSCPEvent::event_t, std::list<int> >();
58    Mutex LSCPServer::NotifyMutex = Mutex();
59    Mutex LSCPServer::NotifyBufferMutex = Mutex();
60    Mutex LSCPServer::SubscriptionMutex = Mutex();
61    Mutex LSCPServer::RTNotifyMutex = Mutex();
62    
63    LSCPServer::LSCPServer(Sampler* pSampler) : Thread(true, false, 0, -4) {
64        this->pSampler = pSampler;
65        LSCPEvent::RegisterEvent(LSCPEvent::event_channel_count, "CHANNEL_COUNT");
66        LSCPEvent::RegisterEvent(LSCPEvent::event_voice_count, "VOICE_COUNT");
67        LSCPEvent::RegisterEvent(LSCPEvent::event_stream_count, "STREAM_COUNT");
68        LSCPEvent::RegisterEvent(LSCPEvent::event_buffer_fill, "BUFFER_FILL");
69        LSCPEvent::RegisterEvent(LSCPEvent::event_channel_info, "CHANNEL_INFO");
70        LSCPEvent::RegisterEvent(LSCPEvent::event_misc, "MISCELLANEOUS");
71        hSocket = -1;
72    }
73    
74    LSCPServer::~LSCPServer() {
75        if (hSocket >= 0) close(hSocket);
76    }
77    
78    /**
79     * Blocks the calling thread until the LSCP Server is initialized and
80     * accepting socket connections, if the server is already initialized then
81     * this method will return immediately.
82     * @param TimeoutSeconds     - optional: max. wait time in seconds
83     *                             (default: 0s)
84     * @param TimeoutNanoSeconds - optional: max wait time in nano seconds
85     *                             (default: 0ns)
86     * @returns  0 on success, a value less than 0 if timeout exceeded
87     */
88    int LSCPServer::WaitUntilInitialized(long TimeoutSeconds, long TimeoutNanoSeconds) {
89        return Initialized.WaitAndUnlockIf(false, TimeoutSeconds, TimeoutNanoSeconds);
90  }  }
91    
92  int LSCPServer::Main() {  int LSCPServer::Main() {
93      hSocket = socket(AF_INET, SOCK_STREAM, 0);      hSocket = socket(AF_INET, SOCK_STREAM, 0);
94      if (hSocket < 0) {      if (hSocket < 0) {
95          std::cerr << "LSCPServer: Could not create server socket." << std::endl;          std::cerr << "LSCPServer: Could not create server socket." << std::endl;
96          return -1;          //return -1;
97            exit(EXIT_FAILURE);
98      }      }
99    
100      SocketAddress.sin_family      = AF_INET;      SocketAddress.sin_family      = AF_INET;
# Line 38  int LSCPServer::Main() { Line 102  int LSCPServer::Main() {
102      SocketAddress.sin_addr.s_addr = htonl(INADDR_ANY);      SocketAddress.sin_addr.s_addr = htonl(INADDR_ANY);
103    
104      if (bind(hSocket, (sockaddr*) &SocketAddress, sizeof(sockaddr_in)) < 0) {      if (bind(hSocket, (sockaddr*) &SocketAddress, sizeof(sockaddr_in)) < 0) {
105          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...";
106          close(hSocket);          for (int trial = 0; true; trial++) { // retry for LSCP_SERVER_BIND_TIMEOUT seconds
107          return -1;              if (bind(hSocket, (sockaddr*) &SocketAddress, sizeof(sockaddr_in)) < 0) {
108                    if (trial > LSCP_SERVER_BIND_TIMEOUT) {
109                        std::cerr << "gave up!" << std::endl;
110                        close(hSocket);
111                        //return -1;
112                        exit(EXIT_FAILURE);
113                    }
114                    else sleep(1); // sleep 1s
115                }
116                else break; // success
117            }
118      }      }
119    
120      listen(hSocket, 1);      listen(hSocket, 1);
121      dmsg(1,("LSCPServer: Server running.\n")); // server running      Initialized.Set(true);
122    
123      // now wait for client connections and handle their requests      // now wait for client connections and handle their requests
124      sockaddr_in client;      sockaddr_in client;
125      int length = sizeof(client);      int length = sizeof(client);
126      while (true) {      FD_ZERO(&fdSet);
127          hSession = accept(hSocket, (sockaddr*) &client, (socklen_t*) &length);      FD_SET(hSocket, &fdSet);
128          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);  
129    
130          close(hSession);      while (true) {
131          dmsg(1,("LSCPServer: Client connection terminated.\n"));          fd_set selectSet = fdSet;
132            int retval = select(maxSessions+1, &selectSet, NULL, NULL, NULL);
133            if (retval == 0)
134                    continue; //Nothing try again
135            if (retval == -1) {
136                    std::cerr << "LSCPServer: Socket select error." << std::endl;
137                    close(hSocket);
138                    exit(EXIT_FAILURE);
139            }
140    
141            //Accept new connections now (if any)
142            if (FD_ISSET(hSocket, &selectSet)) {
143                    int socket = accept(hSocket, (sockaddr*) &client, (socklen_t*) &length);
144                    if (socket < 0) {
145                            std::cerr << "LSCPServer: Client connection failed." << std::endl;
146                            exit(EXIT_FAILURE);
147                    }
148    
149                    if (fcntl(socket, F_SETFL, O_NONBLOCK)) {
150                            std::cerr << "LSCPServer: F_SETFL O_NONBLOCK failed." << std::endl;
151                            exit(EXIT_FAILURE);
152                    }
153    
154                    // Parser initialization
155                    yyparse_param_t yyparse_param;
156                    yyparse_param.pServer  = this;
157                    yyparse_param.hSession = socket;
158    
159                    Sessions.push_back(yyparse_param);
160                    FD_SET(socket, &fdSet);
161                    if (socket > maxSessions)
162                            maxSessions = socket;
163                    dmsg(1,("LSCPServer: Client connection established on socket:%d.\n", socket));
164                    LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_misc, "Client connection established on socket", socket));
165                    continue; //Maybe this was the only selected socket, better select again
166            }
167    
168            //Something was selected and it was not the hSocket, so it must be some command(s) coming.
169            for (std::vector<yyparse_param_t>::iterator iter = Sessions.begin(); iter != Sessions.end(); iter++) {
170                    if (FD_ISSET((*iter).hSession, &selectSet)) {   //Was it this socket?
171                            if (GetLSCPCommand(iter)) {     //Have we read the entire command?
172                                    dmsg(3,("LSCPServer: Got command on socket %d, calling parser.\n", currentSocket));
173                                    int dummy; // just a temporary hack to fulfill the restart() function prototype
174                                    restart(NULL, dummy); // restart the 'scanner'
175                                    currentSocket = (*iter).hSession;  //a hack
176                                    dmsg(2,("LSCPServer: [%s]\n",bufferedCommands[currentSocket].c_str()));
177                                    if ((*iter).bVerbose) { // if echo mode enabled
178                                        AnswerClient(bufferedCommands[currentSocket]);
179                                    }
180                                    int result = yyparse(&(*iter));
181                                    currentSocket = -1;     //continuation of a hack
182                                    dmsg(3,("LSCPServer: Done parsing on socket %d.\n", currentSocket));
183                                    if (result == LSCP_QUIT) { //Was it a quit command by any chance?
184                                            CloseConnection(iter);
185                                    }
186                            }
187                            //socket may have been closed, iter may be invalid, get out of the loop for now.
188                            //we'll be back if there is data.
189                            break;
190                    }
191            }
192    
193            //Now let's deliver late notifies (if any)
194            NotifyBufferMutex.Lock();
195            for (std::map<int,String>::iterator iterNotify = bufferedNotifies.begin(); iterNotify != bufferedNotifies.end(); iterNotify++) {
196                    send(iterNotify->first, iterNotify->second.c_str(), iterNotify->second.size(), 0);
197                    bufferedNotifies.erase(iterNotify);
198            }
199            NotifyBufferMutex.Unlock();
200      }      }
201  }  }
202    
203    void LSCPServer::CloseConnection( std::vector<yyparse_param_t>::iterator iter ) {
204            int socket = (*iter).hSession;
205            dmsg(1,("LSCPServer: Client connection terminated on socket:%d.\n",socket));
206            LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_misc, "Client connection terminated on socket", socket));
207            Sessions.erase(iter);
208            FD_CLR(socket,  &fdSet);
209            SubscriptionMutex.Lock(); //Must unsubscribe this socket from all events (if any)
210            for (std::map< LSCPEvent::event_t, std::list<int> >::iterator iter = eventSubscriptions.begin(); iter != eventSubscriptions.end(); iter++) {
211                    iter->second.remove(socket);
212            }
213            SubscriptionMutex.Unlock();
214            NotifyMutex.Lock();
215            bufferedCommands.erase(socket);
216            bufferedNotifies.erase(socket);
217            close(socket);
218            NotifyMutex.Unlock();
219    }
220    
221    int LSCPServer::EventSubscribers( std::list<LSCPEvent::event_t> events ) {
222            int subs = 0;
223            SubscriptionMutex.Lock();
224            for( std::list<LSCPEvent::event_t>::iterator iter = events.begin();
225                            iter != events.end(); iter++)
226            {
227                    subs += eventSubscriptions.count(*iter);
228            }
229            SubscriptionMutex.Unlock();
230            return subs;
231    }
232    
233    void LSCPServer::SendLSCPNotify( LSCPEvent event ) {
234            SubscriptionMutex.Lock();
235            if (eventSubscriptions.count(event.GetType()) == 0) {
236                    SubscriptionMutex.Unlock();     //Nobody is subscribed to this event
237                    return;
238            }
239            std::list<int>::iterator iter = eventSubscriptions[event.GetType()].begin();
240            std::list<int>::iterator end = eventSubscriptions[event.GetType()].end();
241            String notify = event.Produce();
242    
243            while (true) {
244                    if (NotifyMutex.Trylock()) {
245                            for(;iter != end; iter++)
246                                    send(*iter, notify.c_str(), notify.size(), 0);
247                            NotifyMutex.Unlock();
248                            break;
249                    } else {
250                            if (NotifyBufferMutex.Trylock()) {
251                                    for(;iter != end; iter++)
252                                            bufferedNotifies[*iter] += notify;
253                                    NotifyBufferMutex.Unlock();
254                                    break;
255                            }
256                    }
257            }
258            SubscriptionMutex.Unlock();
259    }
260    
261    extern int GetLSCPCommand( void *buf, int max_size ) {
262            String command = LSCPServer::bufferedCommands[LSCPServer::currentSocket];
263            if (command.size() == 0) {              //Parser wants input but we have nothing.
264                    strcpy((char*) buf, "\n");      //So give it an empty command
265                    return 1;                       //to keep it happy.
266            }
267    
268            if (max_size < command.size()) {
269                    std::cerr << "getLSCPCommand: Flex buffer too small, ignoring the command." << std::endl;
270                    return 0;       //This will never happen
271            }
272    
273            strcpy((char*) buf, command.c_str());
274            LSCPServer::bufferedCommands.erase(LSCPServer::currentSocket);
275            return command.size();
276    }
277    
278    /**
279     * Will be called to try to read the command from the socket
280     * If command is read, it will return true. Otherwise false is returned.
281     * In any case the received portion (complete or incomplete) is saved into bufferedCommand map.
282     */
283    bool LSCPServer::GetLSCPCommand( std::vector<yyparse_param_t>::iterator iter ) {
284            int socket = (*iter).hSession;
285            char c;
286            int i = 0;
287            while (true) {
288                    int result = recv(socket, (void *)&c, 1, 0); //Read one character at a time for now
289                    if (result == 0) { //socket was selected, so 0 here means client has closed the connection
290                            CloseConnection(iter);
291                            break;
292                    }
293                    if (result == 1) {
294                            if (c == '\r')
295                                    continue; //Ignore CR
296                            if (c == '\n') {
297                                    LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_misc, "Received \'" + bufferedCommands[socket] + "\' on socket", socket));
298                                    bufferedCommands[socket] += "\n";
299                                    return true; //Complete command was read
300                            }
301                            bufferedCommands[socket] += c;
302                    }
303                    if (result == -1) {
304                            if (errno == EAGAIN) //Would block, try again later.
305                                    return false;
306                            switch(errno) {
307                                    case EBADF:
308                                            dmsg(2,("LSCPScanner: The argument s is an invalid descriptor.\n"));
309                                            break;
310                                    case ECONNREFUSED:
311                                            dmsg(2,("LSCPScanner: A remote host refused to allow the network connection (typically because it is not running the requested service).\n"));
312                                            break;
313                                    case ENOTCONN:
314                                            dmsg(2,("LSCPScanner: The socket is associated with a connection-oriented protocol and has not been connected (see connect(2) and accept(2)).\n"));
315                                            break;
316                                    case ENOTSOCK:
317                                            dmsg(2,("LSCPScanner: The argument s does not refer to a socket.\n"));
318                                            break;
319                                    case EAGAIN:
320                                            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"));
321                                            break;
322                                    case EINTR:
323                                            dmsg(2,("LSCPScanner: The receive was interrupted by delivery of a signal before any data were available.\n"));
324                                            break;
325                                    case EFAULT:
326                                            dmsg(2,("LSCPScanner: The receive buffer pointer(s) point outside the process's address space.\n"));
327                                            break;
328                                    case EINVAL:
329                                            dmsg(2,("LSCPScanner: Invalid argument passed.\n"));
330                                            break;
331                                    case ENOMEM:
332                                            dmsg(2,("LSCPScanner: Could not allocate memory for recvmsg.\n"));
333                                            break;
334                                    default:
335                                            dmsg(2,("LSCPScanner: Unknown recv() error.\n"));
336                                            break;
337                            }
338                            CloseConnection(iter);
339                            break;
340                    }
341            }
342            return false;
343    }
344    
345  /**  /**
346   * 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
347   * client / frontend.   * client / frontend.
# Line 80  int LSCPServer::Main() { Line 350  int LSCPServer::Main() {
350   */   */
351  void LSCPServer::AnswerClient(String ReturnMessage) {  void LSCPServer::AnswerClient(String ReturnMessage) {
352      dmsg(2,("LSCPServer::AnswerClient(ReturnMessage=%s)", ReturnMessage.c_str()));      dmsg(2,("LSCPServer::AnswerClient(ReturnMessage=%s)", ReturnMessage.c_str()));
353      send(hSession, ReturnMessage.c_str(), ReturnMessage.size(), 0);      if (currentSocket != -1) {
354                NotifyMutex.Lock();
355                send(currentSocket, ReturnMessage.c_str(), ReturnMessage.size(), 0);
356                NotifyMutex.Unlock();
357        }
358    }
359    
360    /**
361     * Find a created audio output device index.
362     */
363    int LSCPServer::GetAudioOutputDeviceIndex ( AudioOutputDevice *pDevice )
364    {
365        // Search for the created device to get its index
366        std::map<uint, AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
367        std::map<uint, AudioOutputDevice*>::iterator iter = devices.begin();
368        for (; iter != devices.end(); iter++) {
369            if (iter->second == pDevice)
370                return iter->first;
371        }
372        // Not found.
373        return -1;
374    }
375    
376    /**
377     * Find a created midi input device index.
378     */
379    int LSCPServer::GetMidiInputDeviceIndex ( MidiInputDevice *pDevice )
380    {
381        // Search for the created device to get its index
382        std::map<uint, MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
383        std::map<uint, MidiInputDevice*>::iterator iter = devices.begin();
384        for (; iter != devices.end(); iter++) {
385            if (iter->second == pDevice)
386                return iter->first;
387        }
388        // Not found.
389        return -1;
390    }
391    
392    String LSCPServer::CreateAudioOutputDevice(String Driver, std::map<String,String> Parameters) {
393        dmsg(2,("LSCPServer: CreateAudioOutputDevice(Driver=%s)\n", Driver.c_str()));
394        LSCPResultSet result;
395        try {
396            AudioOutputDevice* pDevice = pSampler->CreateAudioOutputDevice(Driver, Parameters);
397            // search for the created device to get its index
398            int index = GetAudioOutputDeviceIndex(pDevice);
399            if (index == -1) throw LinuxSamplerException("Internal error: could not find created audio output device.");
400            result = index; // success
401        }
402        catch (LinuxSamplerException e) {
403            result.Error(e);
404        }
405        return result.Produce();
406    }
407    
408    String LSCPServer::CreateMidiInputDevice(String Driver, std::map<String,String> Parameters) {
409        dmsg(2,("LSCPServer: CreateMidiInputDevice(Driver=%s)\n", Driver.c_str()));
410        LSCPResultSet result;
411        try {
412            MidiInputDevice* pDevice = pSampler->CreateMidiInputDevice(Driver, Parameters);
413            // search for the created device to get its index
414            int index = GetMidiInputDeviceIndex(pDevice);
415            if (index == -1) throw LinuxSamplerException("Internal error: could not find created midi input device.");
416            result = index; // success
417        }
418        catch (LinuxSamplerException e) {
419            result.Error(e);
420        }
421        return result.Produce();
422    }
423    
424    String LSCPServer::DestroyAudioOutputDevice(uint DeviceIndex) {
425        dmsg(2,("LSCPServer: DestroyAudioOutputDevice(DeviceIndex=%d)\n", DeviceIndex));
426        LSCPResultSet result;
427        try {
428            std::map<uint, AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
429            if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceIndex) + ".");
430            AudioOutputDevice* pDevice = devices[DeviceIndex];
431            pSampler->DestroyAudioOutputDevice(pDevice);
432        }
433        catch (LinuxSamplerException e) {
434            result.Error(e);
435        }
436        return result.Produce();
437    }
438    
439    String LSCPServer::DestroyMidiInputDevice(uint DeviceIndex) {
440        dmsg(2,("LSCPServer: DestroyMidiInputDevice(DeviceIndex=%d)\n", DeviceIndex));
441        LSCPResultSet result;
442        try {
443            std::map<uint, MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
444            if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceIndex) + ".");
445            MidiInputDevice* pDevice = devices[DeviceIndex];
446            pSampler->DestroyMidiInputDevice(pDevice);
447        }
448        catch (LinuxSamplerException e) {
449            result.Error(e);
450        }
451        return result.Produce();
452  }  }
453    
454  /**  /**
455   * Will be called by the parser to load an instrument.   * Will be called by the parser to load an instrument.
456   */   */
457  String LSCPServer::LoadInstrument(String Filename, uint Instrument, uint SamplerChannel) {  String LSCPServer::LoadInstrument(String Filename, uint uiInstrument, uint uiSamplerChannel, bool bBackground) {
458      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));
459      result_t res = pEngine->LoadInstrument(Filename.c_str(), Instrument);      LSCPResultSet result;
460      return ConvertResult(res);      try {
461            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
462            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
463            EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
464            if (!pEngineChannel) throw LinuxSamplerException("No engine type assigned to sampler channel yet");
465            if (!pSamplerChannel->GetAudioOutputDevice())
466                throw LinuxSamplerException("No audio output device connected to sampler channel");
467            if (bBackground) {
468                InstrumentLoader.StartNewLoad(Filename, uiInstrument, pEngineChannel);
469            }
470            else {
471                // tell the engine channel which instrument to load
472                pEngineChannel->PrepareLoadInstrument(Filename.c_str(), uiInstrument);
473                // actually start to load the instrument (blocks until completed)
474                pEngineChannel->LoadInstrument();
475            }
476        }
477        catch (LinuxSamplerException e) {
478             result.Error(e);
479        }
480        return result.Produce();
481  }  }
482    
483  /**  /**
484   * Will be called by the parser to load and deploy an engine.   * Will be called by the parser to assign a sampler engine type to a
485     * sampler channel.
486   */   */
487  String LSCPServer::LoadEngine(String EngineName, uint SamplerChannel) {  String LSCPServer::SetEngineType(String EngineName, uint uiSamplerChannel) {
488      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));
489      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result;
490        try {
491            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
492            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
493            LockRTNotify();
494            pSamplerChannel->SetEngineType(EngineName);
495            UnlockRTNotify();
496        }
497        catch (LinuxSamplerException e) {
498             result.Error(e);
499        }
500        return result.Produce();
501  }  }
502    
503  /**  /**
# Line 105  String LSCPServer::LoadEngine(String Eng Line 505  String LSCPServer::LoadEngine(String Eng
505   */   */
506  String LSCPServer::GetChannels() {  String LSCPServer::GetChannels() {
507      dmsg(2,("LSCPServer: GetChannels()\n"));      dmsg(2,("LSCPServer: GetChannels()\n"));
508      return "1\r\n";      LSCPResultSet result;
509        result.Add(pSampler->SamplerChannels());
510        return result.Produce();
511    }
512    
513    /**
514     * Will be called by the parser to get the list of sampler channels.
515     */
516    String LSCPServer::ListChannels() {
517        dmsg(2,("LSCPServer: ListChannels()\n"));
518        String list;
519        std::map<uint,SamplerChannel*> channels = pSampler->GetSamplerChannels();
520        std::map<uint,SamplerChannel*>::iterator iter = channels.begin();
521        for (; iter != channels.end(); iter++) {
522            if (list != "") list += ",";
523            list += ToString(iter->first);
524        }
525        LSCPResultSet result;
526        result.Add(list);
527        return result.Produce();
528  }  }
529    
530  /**  /**
# Line 113  String LSCPServer::GetChannels() { Line 532  String LSCPServer::GetChannels() {
532   */   */
533  String LSCPServer::AddChannel() {  String LSCPServer::AddChannel() {
534      dmsg(2,("LSCPServer: AddChannel()\n"));      dmsg(2,("LSCPServer: AddChannel()\n"));
535      return "ERR:0:Not implemented yet.\r\n";      SamplerChannel* pSamplerChannel = pSampler->AddSamplerChannel();
536        LSCPResultSet result(pSamplerChannel->Index());
537        return result.Produce();
538  }  }
539    
540  /**  /**
541   * Will be called by the parser to remove a sampler channel.   * Will be called by the parser to remove a sampler channel.
542   */   */
543  String LSCPServer::RemoveChannel(uint SamplerChannel) {  String LSCPServer::RemoveChannel(uint uiSamplerChannel) {
544      dmsg(2,("LSCPServer: RemoveChannel(SamplerChannel=%d)\n", SamplerChannel));      dmsg(2,("LSCPServer: RemoveChannel(SamplerChannel=%d)\n", uiSamplerChannel));
545      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result;
546        LockRTNotify();
547        pSampler->RemoveSamplerChannel(uiSamplerChannel);
548        UnlockRTNotify();
549        return result.Produce();
550  }  }
551    
552  /**  /**
553   * Will be called by the parser to get all available engines.   * Will be called by the parser to get the amount of all available engines.
554   */   */
555  String LSCPServer::GetAvailableEngines() {  String LSCPServer::GetAvailableEngines() {
556      dmsg(2,("LSCPServer: GetAvailableEngines()\n"));      dmsg(2,("LSCPServer: GetAvailableEngines()\n"));
557      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result("1");
558        return result.Produce();
559  }  }
560    
561  /**  /**
562   * Will be called by the parser to get descriptions for a particular engine.   * Will be called by the parser to get a list of all available engines.
563     */
564    String LSCPServer::ListAvailableEngines() {
565        dmsg(2,("LSCPServer: ListAvailableEngines()\n"));
566        LSCPResultSet result("\'GIG\'");
567        return result.Produce();
568    }
569    
570    /**
571     * Will be called by the parser to get descriptions for a particular
572     * sampler engine.
573   */   */
574  String LSCPServer::GetEngineInfo(String EngineName) {  String LSCPServer::GetEngineInfo(String EngineName) {
575      dmsg(2,("LSCPServer: GetEngineInfo(EngineName=%s)\n", EngineName.c_str()));      dmsg(2,("LSCPServer: GetEngineInfo(EngineName=%s)\n", EngineName.c_str()));
576      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result;
577        try {
578            Engine* pEngine = EngineFactory::Create(EngineName);
579            result.Add("DESCRIPTION", pEngine->Description());
580            result.Add("VERSION",     pEngine->Version());
581            delete pEngine;
582        }
583        catch (LinuxSamplerException e) {
584             result.Error(e);
585        }
586        return result.Produce();
587  }  }
588    
589  /**  /**
590   * Will be called by the parser to get informations about a particular   * Will be called by the parser to get informations about a particular
591   * sampler channel.   * sampler channel.
592   */   */
593  String LSCPServer::GetChannelInfo(uint SamplerChannel) {  String LSCPServer::GetChannelInfo(uint uiSamplerChannel) {
594      dmsg(2,("LSCPServer: GetChannelInfo(SamplerChannel=%d)\n", SamplerChannel));      dmsg(2,("LSCPServer: GetChannelInfo(SamplerChannel=%d)\n", uiSamplerChannel));
595      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result;
596        try {
597            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
598            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
599            EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
600    
601            //Defaults values
602            String EngineName = "NONE";
603            float Volume = 0.0f;
604            String InstrumentFileName = "NONE";
605            String InstrumentName = "NONE";
606            int InstrumentIndex = -1;
607            int InstrumentStatus = -1;
608            int AudioOutputChannels = 0;
609            String AudioRouting;
610    
611            if (pEngineChannel) {
612                EngineName          = pEngineChannel->EngineName();
613                AudioOutputChannels = pEngineChannel->Channels();
614                Volume              = pEngineChannel->Volume();
615                InstrumentStatus    = pEngineChannel->InstrumentStatus();
616                InstrumentIndex     = pEngineChannel->InstrumentIndex();
617                if (InstrumentIndex != -1) {
618                    InstrumentFileName = pEngineChannel->InstrumentFileName();
619                    InstrumentName     = pEngineChannel->InstrumentName();
620                }
621                for (int chan = 0; chan < pEngineChannel->Channels(); chan++) {
622                    if (AudioRouting != "") AudioRouting += ",";
623                    AudioRouting += ToString(pEngineChannel->OutputChannel(chan));
624                }
625            }
626    
627            result.Add("ENGINE_NAME", EngineName);
628            result.Add("VOLUME", Volume);
629    
630            //Some not-so-hardcoded stuff to make GUI look good
631            result.Add("AUDIO_OUTPUT_DEVICE", GetAudioOutputDeviceIndex(pSamplerChannel->GetAudioOutputDevice()));
632            result.Add("AUDIO_OUTPUT_CHANNELS", AudioOutputChannels);
633            result.Add("AUDIO_OUTPUT_ROUTING", AudioRouting);
634    
635            result.Add("MIDI_INPUT_DEVICE", GetMidiInputDeviceIndex(pSamplerChannel->GetMidiInputDevice()));
636            result.Add("MIDI_INPUT_PORT", pSamplerChannel->GetMidiInputPort());
637            if (pSamplerChannel->GetMidiInputChannel() == MidiInputPort::midi_chan_all) result.Add("MIDI_INPUT_CHANNEL", "ALL");
638            else result.Add("MIDI_INPUT_CHANNEL", pSamplerChannel->GetMidiInputChannel());
639    
640            result.Add("INSTRUMENT_FILE", InstrumentFileName);
641            result.Add("INSTRUMENT_NR", InstrumentIndex);
642            result.Add("INSTRUMENT_NAME", InstrumentName);
643            result.Add("INSTRUMENT_STATUS", InstrumentStatus);
644        }
645        catch (LinuxSamplerException e) {
646             result.Error(e);
647        }
648        return result.Produce();
649  }  }
650    
651  /**  /**
652   * 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
653   * particular sampler channel.   * particular sampler channel.
654   */   */
655  String LSCPServer::GetVoiceCount(uint SamplerChannel) {  String LSCPServer::GetVoiceCount(uint uiSamplerChannel) {
656      dmsg(2,("LSCPServer: GetVoiceCount(SamplerChannel=%d)\n", SamplerChannel));      dmsg(2,("LSCPServer: GetVoiceCount(SamplerChannel=%d)\n", uiSamplerChannel));
657      return ToString(pEngine->ActiveVoiceCount) + "\r\n";      LSCPResultSet result;
658        try {
659            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
660            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
661            EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
662            if (!pEngineChannel) throw LinuxSamplerException("No engine loaded on sampler channel");
663            result.Add(pEngineChannel->GetEngine()->VoiceCount());
664        }
665        catch (LinuxSamplerException e) {
666             result.Error(e);
667        }
668        return result.Produce();
669  }  }
670    
671  /**  /**
672   * 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
673   * particular sampler channel.   * particular sampler channel.
674   */   */
675  String LSCPServer::GetStreamCount(uint SamplerChannel) {  String LSCPServer::GetStreamCount(uint uiSamplerChannel) {
676      dmsg(2,("LSCPServer: GetStreamCount(SamplerChannel=%d)\n", SamplerChannel));      dmsg(2,("LSCPServer: GetStreamCount(SamplerChannel=%d)\n", uiSamplerChannel));
677      return ToString(pEngine->pDiskThread->ActiveStreamCount) + "\r\n";      LSCPResultSet result;
678        try {
679            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
680            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
681            EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
682            if (!pEngineChannel) throw LinuxSamplerException("No engine type assigned to sampler channel");
683            result.Add(pEngineChannel->GetEngine()->DiskStreamCount());
684        }
685        catch (LinuxSamplerException e) {
686             result.Error(e);
687        }
688        return result.Produce();
689  }  }
690    
691  /**  /**
692   * 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
693   * streams on a particular sampler channel.   * streams on a particular sampler channel.
694   */   */
695  String LSCPServer::GetBufferFill(fill_response_t ResponseType, uint SamplerChannel) {  String LSCPServer::GetBufferFill(fill_response_t ResponseType, uint uiSamplerChannel) {
696      dmsg(2,("LSCPServer: GetBufferFill(ResponseType=%d, SamplerChannel=%d)\n", ResponseType, SamplerChannel));      dmsg(2,("LSCPServer: GetBufferFill(ResponseType=%d, SamplerChannel=%d)\n", ResponseType, uiSamplerChannel));
697      return (ResponseType == fill_response_bytes) ? pEngine->pDiskThread->GetBufferFillBytes() + "\r\n"      LSCPResultSet result;
698                                                   : pEngine->pDiskThread->GetBufferFillPercentage() + "\r\n";      try {
699            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
700            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
701            EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
702            if (!pEngineChannel) throw LinuxSamplerException("No engine type assigned to sampler channel");
703            if (!pEngineChannel->GetEngine()->DiskStreamSupported()) result.Add("NA");
704            else {
705                switch (ResponseType) {
706                    case fill_response_bytes:
707                        result.Add(pEngineChannel->GetEngine()->DiskStreamBufferFillBytes());
708                        break;
709                    case fill_response_percentage:
710                        result.Add(pEngineChannel->GetEngine()->DiskStreamBufferFillPercentage());
711                        break;
712                    default:
713                        throw LinuxSamplerException("Unknown fill response type");
714                }
715            }
716        }
717        catch (LinuxSamplerException e) {
718             result.Error(e);
719        }
720        return result.Produce();
721  }  }
722    
723  /**  String LSCPServer::GetAvailableAudioOutputDrivers() {
724   * Will be called by the parser to change the audio output type on a      dmsg(2,("LSCPServer: GetAvailableAudioOutputDrivers()\n"));
725   * particular sampler channel.      LSCPResultSet result;
726   */      try {
727  String LSCPServer::SetAudioOutputType(audio_output_type_t AudioOutputType, uint SamplerChannel) {          int n = AudioOutputDeviceFactory::AvailableDrivers().size();
728      dmsg(2,("LSCPServer: SetAudioOutputType(AudioOutputType=%d, SamplerChannel=%d)\n", AudioOutputType, SamplerChannel));          result.Add(n);
729      return "ERR:0:Not implemented yet.\r\n";      }
730        catch (LinuxSamplerException e) {
731            result.Error(e);
732        }
733        return result.Produce();
734    }
735    
736    String LSCPServer::ListAvailableAudioOutputDrivers() {
737        dmsg(2,("LSCPServer: ListAvailableAudioOutputDrivers()\n"));
738        LSCPResultSet result;
739        try {
740            String s = AudioOutputDeviceFactory::AvailableDriversAsString();
741            result.Add(s);
742        }
743        catch (LinuxSamplerException e) {
744            result.Error(e);
745        }
746        return result.Produce();
747    }
748    
749    String LSCPServer::GetAvailableMidiInputDrivers() {
750        dmsg(2,("LSCPServer: GetAvailableMidiInputDrivers()\n"));
751        LSCPResultSet result;
752        try {
753            int n = MidiInputDeviceFactory::AvailableDrivers().size();
754            result.Add(n);
755        }
756        catch (LinuxSamplerException e) {
757            result.Error(e);
758        }
759        return result.Produce();
760    }
761    
762    String LSCPServer::ListAvailableMidiInputDrivers() {
763        dmsg(2,("LSCPServer: ListAvailableMidiInputDrivers()\n"));
764        LSCPResultSet result;
765        try {
766            String s = MidiInputDeviceFactory::AvailableDriversAsString();
767            result.Add(s);
768        }
769        catch (LinuxSamplerException e) {
770            result.Error(e);
771        }
772        return result.Produce();
773    }
774    
775    String LSCPServer::GetMidiInputDriverInfo(String Driver) {
776        dmsg(2,("LSCPServer: GetMidiInputDriverInfo(Driver=%s)\n",Driver.c_str()));
777        LSCPResultSet result;
778        try {
779            result.Add("DESCRIPTION", MidiInputDeviceFactory::GetDriverDescription(Driver));
780            result.Add("VERSION",     MidiInputDeviceFactory::GetDriverVersion(Driver));
781    
782            std::map<String,DeviceCreationParameter*> parameters = MidiInputDeviceFactory::GetAvailableDriverParameters(Driver);
783            if (parameters.size()) { // if there are parameters defined for this driver
784                String s;
785                std::map<String,DeviceCreationParameter*>::iterator iter = parameters.begin();
786                for (;iter != parameters.end(); iter++) {
787                    if (s != "") s += ",";
788                    s += iter->first;
789                }
790                result.Add("PARAMETERS", s);
791            }
792        }
793        catch (LinuxSamplerException e) {
794            result.Error(e);
795        }
796        return result.Produce();
797    }
798    
799    String LSCPServer::GetAudioOutputDriverInfo(String Driver) {
800        dmsg(2,("LSCPServer: GetAudioOutputDriverInfo(Driver=%s)\n",Driver.c_str()));
801        LSCPResultSet result;
802        try {
803            result.Add("DESCRIPTION", AudioOutputDeviceFactory::GetDriverDescription(Driver));
804            result.Add("VERSION",     AudioOutputDeviceFactory::GetDriverVersion(Driver));
805    
806            std::map<String,DeviceCreationParameter*> parameters = AudioOutputDeviceFactory::GetAvailableDriverParameters(Driver);
807            if (parameters.size()) { // if there are parameters defined for this driver
808                String s;
809                std::map<String,DeviceCreationParameter*>::iterator iter = parameters.begin();
810                for (;iter != parameters.end(); iter++) {
811                    if (s != "") s += ",";
812                    s += iter->first;
813                }
814                result.Add("PARAMETERS", s);
815            }
816        }
817        catch (LinuxSamplerException e) {
818            result.Error(e);
819        }
820        return result.Produce();
821    }
822    
823    String LSCPServer::GetMidiInputDriverParameterInfo(String Driver, String Parameter, std::map<String,String> DependencyList) {
824        dmsg(2,("LSCPServer: GetMidiInputDriverParameterInfo(Driver=%s,Parameter=%s,DependencyListSize=%d)\n",Driver.c_str(),Parameter.c_str(),DependencyList.size()));
825        LSCPResultSet result;
826        try {
827            DeviceCreationParameter* pParameter = MidiInputDeviceFactory::GetDriverParameter(Driver, Parameter);
828            result.Add("TYPE",         pParameter->Type());
829            result.Add("DESCRIPTION",  pParameter->Description());
830            result.Add("MANDATORY",    pParameter->Mandatory());
831            result.Add("FIX",          pParameter->Fix());
832            result.Add("MULTIPLICITY", pParameter->Multiplicity());
833            optional<String> oDepends       = pParameter->Depends();
834            optional<String> oDefault       = pParameter->Default(DependencyList);
835            optional<String> oRangeMin      = pParameter->RangeMin(DependencyList);
836            optional<String> oRangeMax      = pParameter->RangeMax(DependencyList);
837            optional<String> oPossibilities = pParameter->Possibilities(DependencyList);
838            if (oDepends)       result.Add("DEPENDS",       *oDepends);
839            if (oDefault)       result.Add("DEFAULT",       *oDefault);
840            if (oRangeMin)      result.Add("RANGE_MIN",     *oRangeMin);
841            if (oRangeMax)      result.Add("RANGE_MAX",     *oRangeMax);
842            if (oPossibilities) result.Add("POSSIBILITIES", *oPossibilities);
843        }
844        catch (LinuxSamplerException e) {
845            result.Error(e);
846        }
847        return result.Produce();
848    }
849    
850    String LSCPServer::GetAudioOutputDriverParameterInfo(String Driver, String Parameter, std::map<String,String> DependencyList) {
851        dmsg(2,("LSCPServer: GetAudioOutputDriverParameterInfo(Driver=%s,Parameter=%s,DependencyListSize=%d)\n",Driver.c_str(),Parameter.c_str(),DependencyList.size()));
852        LSCPResultSet result;
853        try {
854            DeviceCreationParameter* pParameter = AudioOutputDeviceFactory::GetDriverParameter(Driver, Parameter);
855            result.Add("TYPE",         pParameter->Type());
856            result.Add("DESCRIPTION",  pParameter->Description());
857            result.Add("MANDATORY",    pParameter->Mandatory());
858            result.Add("FIX",          pParameter->Fix());
859            result.Add("MULTIPLICITY", pParameter->Multiplicity());
860            optional<String> oDepends       = pParameter->Depends();
861            optional<String> oDefault       = pParameter->Default(DependencyList);
862            optional<String> oRangeMin      = pParameter->RangeMin(DependencyList);
863            optional<String> oRangeMax      = pParameter->RangeMax(DependencyList);
864            optional<String> oPossibilities = pParameter->Possibilities(DependencyList);
865            if (oDepends)       result.Add("DEPENDS",       *oDepends);
866            if (oDefault)       result.Add("DEFAULT",       *oDefault);
867            if (oRangeMin)      result.Add("RANGE_MIN",     *oRangeMin);
868            if (oRangeMax)      result.Add("RANGE_MAX",     *oRangeMax);
869            if (oPossibilities) result.Add("POSSIBILITIES", *oPossibilities);
870        }
871        catch (LinuxSamplerException e) {
872            result.Error(e);
873        }
874        return result.Produce();
875    }
876    
877    String LSCPServer::GetAudioOutputDeviceCount() {
878        dmsg(2,("LSCPServer: GetAudioOutputDeviceCount()\n"));
879        LSCPResultSet result;
880        try {
881            uint count = pSampler->AudioOutputDevices();
882            result.Add(count); // success
883        }
884        catch (LinuxSamplerException e) {
885            result.Error(e);
886        }
887        return result.Produce();
888    }
889    
890    String LSCPServer::GetMidiInputDeviceCount() {
891        dmsg(2,("LSCPServer: GetMidiInputDeviceCount()\n"));
892        LSCPResultSet result;
893        try {
894            uint count = pSampler->MidiInputDevices();
895            result.Add(count); // success
896        }
897        catch (LinuxSamplerException e) {
898            result.Error(e);
899        }
900        return result.Produce();
901    }
902    
903    String LSCPServer::GetAudioOutputDevices() {
904        dmsg(2,("LSCPServer: GetAudioOutputDevices()\n"));
905        LSCPResultSet result;
906        try {
907            String s;
908            std::map<uint, AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
909            std::map<uint, AudioOutputDevice*>::iterator iter = devices.begin();
910            for (; iter != devices.end(); iter++) {
911                if (s != "") s += ",";
912                s += ToString(iter->first);
913            }
914            result.Add(s);
915        }
916        catch (LinuxSamplerException e) {
917            result.Error(e);
918        }
919        return result.Produce();
920    }
921    
922    String LSCPServer::GetMidiInputDevices() {
923        dmsg(2,("LSCPServer: GetMidiInputDevices()\n"));
924        LSCPResultSet result;
925        try {
926            String s;
927            std::map<uint, MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
928            std::map<uint, MidiInputDevice*>::iterator iter = devices.begin();
929            for (; iter != devices.end(); iter++) {
930                if (s != "") s += ",";
931                s += ToString(iter->first);
932            }
933            result.Add(s);
934        }
935        catch (LinuxSamplerException e) {
936            result.Error(e);
937        }
938        return result.Produce();
939    }
940    
941    String LSCPServer::GetAudioOutputDeviceInfo(uint DeviceIndex) {
942        dmsg(2,("LSCPServer: GetAudioOutputDeviceInfo(DeviceIndex=%d)\n",DeviceIndex));
943        LSCPResultSet result;
944        try {
945            std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
946            if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceIndex) + ".");
947            AudioOutputDevice* pDevice = devices[DeviceIndex];
948            result.Add("DRIVER", pDevice->Driver());
949            std::map<String,DeviceCreationParameter*> parameters = pDevice->DeviceParameters();
950            std::map<String,DeviceCreationParameter*>::iterator iter = parameters.begin();
951            for (; iter != parameters.end(); iter++) {
952                result.Add(iter->first, iter->second->Value());
953            }
954        }
955        catch (LinuxSamplerException e) {
956            result.Error(e);
957        }
958        return result.Produce();
959    }
960    
961    String LSCPServer::GetMidiInputDeviceInfo(uint DeviceIndex) {
962        dmsg(2,("LSCPServer: GetMidiInputDeviceInfo(DeviceIndex=%d)\n",DeviceIndex));
963        LSCPResultSet result;
964        try {
965            std::map<uint,MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
966            if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(DeviceIndex) + ".");
967            MidiInputDevice* pDevice = devices[DeviceIndex];
968            result.Add("DRIVER", pDevice->Driver());
969            std::map<String,DeviceCreationParameter*> parameters = pDevice->DeviceParameters();
970            std::map<String,DeviceCreationParameter*>::iterator iter = parameters.begin();
971            for (; iter != parameters.end(); iter++) {
972                result.Add(iter->first, iter->second->Value());
973            }
974        }
975        catch (LinuxSamplerException e) {
976            result.Error(e);
977        }
978        return result.Produce();
979    }
980    String LSCPServer::GetMidiInputPortInfo(uint DeviceIndex, uint PortIndex) {
981        dmsg(2,("LSCPServer: GetMidiInputPortInfo(DeviceIndex=%d, PortIndex=%d)\n",DeviceIndex, PortIndex));
982        LSCPResultSet result;
983        try {
984            // get MIDI input device
985            std::map<uint,MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
986            if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(DeviceIndex) + ".");
987            MidiInputDevice* pDevice = devices[DeviceIndex];
988    
989            // get MIDI port
990            MidiInputPort* pMidiInputPort = pDevice->GetPort(PortIndex);
991            if (!pMidiInputPort) throw LinuxSamplerException("There is no MIDI input port with index " + ToString(PortIndex) + ".");
992    
993            // return the values of all MIDI port parameters
994            std::map<String,DeviceRuntimeParameter*> parameters = pMidiInputPort->PortParameters();
995            std::map<String,DeviceRuntimeParameter*>::iterator iter = parameters.begin();
996            for (; iter != parameters.end(); iter++) {
997                result.Add(iter->first, iter->second->Value());
998            }
999        }
1000        catch (LinuxSamplerException e) {
1001            result.Error(e);
1002        }
1003        return result.Produce();
1004    }
1005    
1006    String LSCPServer::GetAudioOutputChannelInfo(uint DeviceId, uint ChannelId) {
1007        dmsg(2,("LSCPServer: GetAudioOutputChannelInfo(DeviceId=%d,ChannelId)\n",DeviceId,ChannelId));
1008        LSCPResultSet result;
1009        try {
1010            // get audio output device
1011            std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
1012            if (!devices.count(DeviceId)) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceId) + ".");
1013            AudioOutputDevice* pDevice = devices[DeviceId];
1014    
1015            // get audio channel
1016            AudioChannel* pChannel = pDevice->Channel(ChannelId);
1017            if (!pChannel) throw LinuxSamplerException("Audio output device does not have audio channel " + ToString(ChannelId) + ".");
1018    
1019            // return the values of all audio channel parameters
1020            std::map<String,DeviceRuntimeParameter*> parameters = pChannel->ChannelParameters();
1021            std::map<String,DeviceRuntimeParameter*>::iterator iter = parameters.begin();
1022            for (; iter != parameters.end(); iter++) {
1023                result.Add(iter->first, iter->second->Value());
1024            }
1025        }
1026        catch (LinuxSamplerException e) {
1027            result.Error(e);
1028        }
1029        return result.Produce();
1030    }
1031    
1032    String LSCPServer::GetMidiInputPortParameterInfo(uint DeviceId, uint PortId, String ParameterName) {
1033        dmsg(2,("LSCPServer: GetMidiInputPortParameterInfo(DeviceId=%d,PortId=%d,ParameterName=%s)\n",DeviceId,PortId,ParameterName.c_str()));
1034        LSCPResultSet result;
1035        try {
1036            // get MIDI input device
1037            std::map<uint,MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
1038            if (!devices.count(DeviceId)) throw LinuxSamplerException("There is no midi input device with index " + ToString(DeviceId) + ".");
1039            MidiInputDevice* pDevice = devices[DeviceId];
1040    
1041            // get midi port
1042            MidiInputPort* pPort = pDevice->GetPort(PortId);
1043            if (!pPort) throw LinuxSamplerException("Midi input device does not have port " + ToString(PortId) + ".");
1044    
1045            // get desired port parameter
1046            std::map<String,DeviceRuntimeParameter*> parameters = pPort->PortParameters();
1047            if (!parameters.count(ParameterName)) throw LinuxSamplerException("Midi port does not provide a parameter '" + ParameterName + "'.");
1048            DeviceRuntimeParameter* pParameter = parameters[ParameterName];
1049    
1050            // return all fields of this audio channel parameter
1051            result.Add("TYPE",         pParameter->Type());
1052            result.Add("DESCRIPTION",  pParameter->Description());
1053            result.Add("FIX",          pParameter->Fix());
1054            result.Add("MULTIPLICITY", pParameter->Multiplicity());
1055            if (pParameter->RangeMin())      result.Add("RANGE_MIN",     *pParameter->RangeMin());
1056            if (pParameter->RangeMax())      result.Add("RANGE_MAX",     *pParameter->RangeMax());
1057            if (pParameter->Possibilities()) result.Add("POSSIBILITIES", *pParameter->Possibilities());
1058        }
1059        catch (LinuxSamplerException e) {
1060            result.Error(e);
1061        }
1062        return result.Produce();
1063    }
1064    
1065    String LSCPServer::GetAudioOutputChannelParameterInfo(uint DeviceId, uint ChannelId, String ParameterName) {
1066        dmsg(2,("LSCPServer: GetAudioOutputChannelParameterInfo(DeviceId=%d,ChannelId=%d,ParameterName=%s)\n",DeviceId,ChannelId,ParameterName.c_str()));
1067        LSCPResultSet result;
1068        try {
1069            // get audio output device
1070            std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
1071            if (!devices.count(DeviceId)) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceId) + ".");
1072            AudioOutputDevice* pDevice = devices[DeviceId];
1073    
1074            // get audio channel
1075            AudioChannel* pChannel = pDevice->Channel(ChannelId);
1076            if (!pChannel) throw LinuxSamplerException("Audio output device does not have audio channel " + ToString(ChannelId) + ".");
1077    
1078            // get desired audio channel parameter
1079            std::map<String,DeviceRuntimeParameter*> parameters = pChannel->ChannelParameters();
1080            if (!parameters.count(ParameterName)) throw LinuxSamplerException("Audio channel does not provide a parameter '" + ParameterName + "'.");
1081            DeviceRuntimeParameter* pParameter = parameters[ParameterName];
1082    
1083            // return all fields of this audio channel parameter
1084            result.Add("TYPE",         pParameter->Type());
1085            result.Add("DESCRIPTION",  pParameter->Description());
1086            result.Add("FIX",          pParameter->Fix());
1087            result.Add("MULTIPLICITY", pParameter->Multiplicity());
1088            if (pParameter->RangeMin())      result.Add("RANGE_MIN",     *pParameter->RangeMin());
1089            if (pParameter->RangeMax())      result.Add("RANGE_MAX",     *pParameter->RangeMax());
1090            if (pParameter->Possibilities()) result.Add("POSSIBILITIES", *pParameter->Possibilities());
1091        }
1092        catch (LinuxSamplerException e) {
1093            result.Error(e);
1094        }
1095        return result.Produce();
1096    }
1097    
1098    String LSCPServer::SetAudioOutputChannelParameter(uint DeviceId, uint ChannelId, String ParamKey, String ParamVal) {
1099        dmsg(2,("LSCPServer: SetAudioOutputChannelParameter(DeviceId=%d,ChannelId=%d,ParamKey=%s,ParamVal=%s)\n",DeviceId,ChannelId,ParamKey.c_str(),ParamVal.c_str()));
1100        LSCPResultSet result;
1101        try {
1102            // get audio output device
1103            std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
1104            if (!devices.count(DeviceId)) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceId) + ".");
1105            AudioOutputDevice* pDevice = devices[DeviceId];
1106    
1107            // get audio channel
1108            AudioChannel* pChannel = pDevice->Channel(ChannelId);
1109            if (!pChannel) throw LinuxSamplerException("Audio output device does not have audio channel " + ToString(ChannelId) + ".");
1110    
1111            // get desired audio channel parameter
1112            std::map<String,DeviceRuntimeParameter*> parameters = pChannel->ChannelParameters();
1113            if (!parameters.count(ParamKey)) throw LinuxSamplerException("Audio channel does not provide a parameter '" + ParamKey + "'.");
1114            DeviceRuntimeParameter* pParameter = parameters[ParamKey];
1115    
1116            // set new channel parameter value
1117            pParameter->SetValue(ParamVal);
1118        }
1119        catch (LinuxSamplerException e) {
1120            result.Error(e);
1121        }
1122        return result.Produce();
1123    }
1124    
1125    String LSCPServer::SetAudioOutputDeviceParameter(uint DeviceIndex, String ParamKey, String ParamVal) {
1126        dmsg(2,("LSCPServer: SetAudioOutputDeviceParameter(DeviceIndex=%d,ParamKey=%s,ParamVal=%s)\n",DeviceIndex,ParamKey.c_str(),ParamVal.c_str()));
1127        LSCPResultSet result;
1128        try {
1129            std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
1130            if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceIndex) + ".");
1131            AudioOutputDevice* pDevice = devices[DeviceIndex];
1132            std::map<String,DeviceCreationParameter*> parameters = pDevice->DeviceParameters();
1133            if (!parameters.count(ParamKey)) throw LinuxSamplerException("Audio output device " + ToString(DeviceIndex) + " does not have a device parameter '" + ParamKey + "'");
1134            parameters[ParamKey]->SetValue(ParamVal);
1135        }
1136        catch (LinuxSamplerException e) {
1137            result.Error(e);
1138        }
1139        return result.Produce();
1140    }
1141    
1142    String LSCPServer::SetMidiInputDeviceParameter(uint DeviceIndex, String ParamKey, String ParamVal) {
1143        dmsg(2,("LSCPServer: SetMidiOutputDeviceParameter(DeviceIndex=%d,ParamKey=%s,ParamVal=%s)\n",DeviceIndex,ParamKey.c_str(),ParamVal.c_str()));
1144        LSCPResultSet result;
1145        try {
1146            std::map<uint,MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
1147            if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(DeviceIndex) + ".");
1148            MidiInputDevice* pDevice = devices[DeviceIndex];
1149            std::map<String,DeviceCreationParameter*> parameters = pDevice->DeviceParameters();
1150            if (!parameters.count(ParamKey)) throw LinuxSamplerException("MIDI input device " + ToString(DeviceIndex) + " does not have a device parameter '" + ParamKey + "'");
1151            parameters[ParamKey]->SetValue(ParamVal);
1152        }
1153        catch (LinuxSamplerException e) {
1154            result.Error(e);
1155        }
1156        return result.Produce();
1157    }
1158    
1159    String LSCPServer::SetMidiInputPortParameter(uint DeviceIndex, uint PortIndex, String ParamKey, String ParamVal) {
1160        dmsg(2,("LSCPServer: SetMidiOutputDeviceParameter(DeviceIndex=%d,ParamKey=%s,ParamVal=%s)\n",DeviceIndex,ParamKey.c_str(),ParamVal.c_str()));
1161        LSCPResultSet result;
1162        try {
1163            // get MIDI input device
1164            std::map<uint,MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
1165            if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(DeviceIndex) + ".");
1166            MidiInputDevice* pDevice = devices[DeviceIndex];
1167    
1168            // get MIDI port
1169            MidiInputPort* pMidiInputPort = pDevice->GetPort(PortIndex);
1170            if (!pMidiInputPort) throw LinuxSamplerException("There is no MIDI input port with index " + ToString(PortIndex) + ".");
1171    
1172            // set port parameter value
1173            std::map<String,DeviceRuntimeParameter*> parameters = pMidiInputPort->PortParameters();
1174            if (!parameters.count(ParamKey)) throw LinuxSamplerException("MIDI input device " + ToString(PortIndex) + " does not have a parameter '" + ParamKey + "'");
1175            parameters[ParamKey]->SetValue(ParamVal);
1176        }
1177        catch (LinuxSamplerException e) {
1178            result.Error(e);
1179        }
1180        return result.Produce();
1181  }  }
1182    
1183  /**  /**
1184   * 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
1185   * playback on a particular sampler channel.   * playback on a particular sampler channel.
1186   */   */
1187  String LSCPServer::SetAudioOutputChannel(uint AudioOutputChannel, uint SamplerChannel) {  String LSCPServer::SetAudioOutputChannel(uint ChannelAudioOutputChannel, uint AudioOutputDeviceInputChannel, uint uiSamplerChannel) {
1188      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));
1189      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result;
1190        try {
1191            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1192            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1193            EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
1194            if (!pEngineChannel) throw LinuxSamplerException("No engine type yet assigned to sampler channel " + ToString(uiSamplerChannel));
1195            if (!pSamplerChannel->GetAudioOutputDevice()) throw LinuxSamplerException("No audio output device connected to sampler channel " + ToString(uiSamplerChannel));
1196            pEngineChannel->SetOutputChannel(ChannelAudioOutputChannel, AudioOutputDeviceInputChannel);
1197        }
1198        catch (LinuxSamplerException e) {
1199             result.Error(e);
1200        }
1201        return result.Produce();
1202  }  }
1203    
1204  /**  String LSCPServer::SetAudioOutputDevice(uint AudioDeviceId, uint uiSamplerChannel) {
1205   * 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));
1206   * engine of a particular sampler channel should listen to.      LSCPResultSet result;
1207   */      try {
1208  String LSCPServer::SetMIDIInputPort(String MIDIInputPort, uint Samplerchannel) {          SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1209      dmsg(2,("LSCPServer: SetMIDIInputPort(MIDIInputPort=%s, Samplerchannel=%d)\n", MIDIInputPort.c_str(), Samplerchannel));          if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1210      return "ERR:0:Not implemented yet.\r\n";          std::map<uint, AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
1211            if (!devices.count(AudioDeviceId)) throw LinuxSamplerException("There is no audio output device with index " + ToString(AudioDeviceId));
1212            AudioOutputDevice* pDevice = devices[AudioDeviceId];
1213            pSamplerChannel->SetAudioOutputDevice(pDevice);
1214        }
1215        catch (LinuxSamplerException e) {
1216             result.Error(e);
1217        }
1218        return result.Produce();
1219    }
1220    
1221    String LSCPServer::SetAudioOutputType(String AudioOutputDriver, uint uiSamplerChannel) {
1222        dmsg(2,("LSCPServer: SetAudioOutputType(String AudioOutputDriver=%s, SamplerChannel=%d)\n",AudioOutputDriver.c_str(),uiSamplerChannel));
1223        LSCPResultSet result;
1224        try {
1225            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1226            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1227            // Driver type name aliasing...
1228            if (AudioOutputDriver == "Alsa") AudioOutputDriver = "ALSA";
1229            if (AudioOutputDriver == "Jack") AudioOutputDriver = "JACK";
1230            // Check if there's one audio output device already created
1231            // for the intended audio driver type (AudioOutputDriver)...
1232            AudioOutputDevice *pDevice = NULL;
1233            std::map<uint, AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
1234            std::map<uint, AudioOutputDevice*>::iterator iter = devices.begin();
1235            for (; iter != devices.end(); iter++) {
1236                if ((iter->second)->Driver() == AudioOutputDriver) {
1237                    pDevice = iter->second;
1238                    break;
1239                }
1240            }
1241            // If it doesn't exist, create a new one with default parameters...
1242            if (pDevice == NULL) {
1243                std::map<String,String> params;
1244                pDevice = pSampler->CreateAudioOutputDevice(AudioOutputDriver, params);
1245            }
1246            // Must have a device...
1247            if (pDevice == NULL)
1248                throw LinuxSamplerException("Internal error: could not create audio output device.");
1249            // Set it as the current channel device...
1250            pSamplerChannel->SetAudioOutputDevice(pDevice);
1251        }
1252        catch (LinuxSamplerException e) {
1253             result.Error(e);
1254        }
1255        return result.Produce();
1256    }
1257    
1258    String LSCPServer::SetMIDIInputPort(uint MIDIPort, uint uiSamplerChannel) {
1259        dmsg(2,("LSCPServer: SetMIDIInputPort(MIDIPort=%d, SamplerChannel=%d)\n",MIDIPort,uiSamplerChannel));
1260        LSCPResultSet result;
1261        try {
1262            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1263            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1264            pSamplerChannel->SetMidiInputPort(MIDIPort);
1265        }
1266        catch (LinuxSamplerException e) {
1267             result.Error(e);
1268        }
1269        return result.Produce();
1270    }
1271    
1272    String LSCPServer::SetMIDIInputChannel(uint MIDIChannel, uint uiSamplerChannel) {
1273        dmsg(2,("LSCPServer: SetMIDIInputChannel(MIDIChannel=%d, SamplerChannel=%d)\n",MIDIChannel,uiSamplerChannel));
1274        LSCPResultSet result;
1275        try {
1276            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1277            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1278            pSamplerChannel->SetMidiInputChannel((MidiInputPort::midi_chan_t) MIDIChannel);
1279        }
1280        catch (LinuxSamplerException e) {
1281             result.Error(e);
1282        }
1283        return result.Produce();
1284    }
1285    
1286    String LSCPServer::SetMIDIInputDevice(uint MIDIDeviceId, uint uiSamplerChannel) {
1287        dmsg(2,("LSCPServer: SetMIDIInputDevice(MIDIDeviceId=%d, SamplerChannel=%d)\n",MIDIDeviceId,uiSamplerChannel));
1288        LSCPResultSet result;
1289        try {
1290            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1291            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1292            std::map<uint, MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
1293            if (!devices.count(MIDIDeviceId)) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(MIDIDeviceId));
1294            MidiInputDevice* pDevice = devices[MIDIDeviceId];
1295            pSamplerChannel->SetMidiInputDevice(pDevice);
1296        }
1297        catch (LinuxSamplerException e) {
1298             result.Error(e);
1299        }
1300        return result.Produce();
1301    }
1302    
1303    String LSCPServer::SetMIDIInputType(String MidiInputDriver, uint uiSamplerChannel) {
1304        dmsg(2,("LSCPServer: SetMIDIInputType(String MidiInputDriver=%s, SamplerChannel=%d)\n",MidiInputDriver.c_str(),uiSamplerChannel));
1305        LSCPResultSet result;
1306        try {
1307            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1308            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1309            // Driver type name aliasing...
1310            if (MidiInputDriver == "Alsa") MidiInputDriver = "ALSA";
1311            // Check if there's one MIDI input device already created
1312            // for the intended MIDI driver type (MidiInputDriver)...
1313            MidiInputDevice *pDevice = NULL;
1314            std::map<uint, MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
1315            std::map<uint, MidiInputDevice*>::iterator iter = devices.begin();
1316            for (; iter != devices.end(); iter++) {
1317                if ((iter->second)->Driver() == MidiInputDriver) {
1318                    pDevice = iter->second;
1319                    break;
1320                }
1321            }
1322            // If it doesn't exist, create a new one with default parameters...
1323            if (pDevice == NULL) {
1324                std::map<String,String> params;
1325                pDevice = pSampler->CreateMidiInputDevice(MidiInputDriver, params);
1326                // Make it with at least one initial port.
1327                std::map<String,DeviceCreationParameter*> parameters = pDevice->DeviceParameters();
1328                parameters["PORTS"]->SetValue("1");
1329            }
1330            // Must have a device...
1331            if (pDevice == NULL)
1332                throw LinuxSamplerException("Internal error: could not create MIDI input device.");
1333            // Set it as the current channel device...
1334            pSamplerChannel->SetMidiInputDevice(pDevice);
1335        }
1336        catch (LinuxSamplerException e) {
1337             result.Error(e);
1338        }
1339        return result.Produce();
1340  }  }
1341    
1342  /**  /**
1343   * 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
1344   * engine of a particular sampler channel should listen to.   * engine of a particular sampler channel should listen to.
1345   */   */
1346  String LSCPServer::SetMIDIInputChannel(uint MIDIChannel, uint SamplerChannel) {  String LSCPServer::SetMIDIInput(uint MIDIDeviceId, uint MIDIPort, uint MIDIChannel, uint uiSamplerChannel) {
1347      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));
1348      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result;
1349        try {
1350            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1351            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1352            std::map<uint, MidiInputDevice*> devices =  pSampler->GetMidiInputDevices();
1353            if (!devices.count(MIDIDeviceId)) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(MIDIDeviceId));
1354            MidiInputDevice* pDevice = devices[MIDIDeviceId];
1355            pSamplerChannel->SetMidiInput(pDevice, MIDIPort, (MidiInputPort::midi_chan_t) MIDIChannel);
1356        }
1357        catch (LinuxSamplerException e) {
1358             result.Error(e);
1359        }
1360        return result.Produce();
1361  }  }
1362    
1363  /**  /**
1364   * 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
1365   * particular sampler channel.   * particular sampler channel.
1366   */   */
1367  String LSCPServer::SetVolume(double Volume, uint SamplerChannel) {  String LSCPServer::SetVolume(double dVolume, uint uiSamplerChannel) {
1368      dmsg(2,("LSCPServer: SetVolume(Volume=%f, SamplerChannel=%d)\n", Volume, SamplerChannel));      dmsg(2,("LSCPServer: SetVolume(Volume=%f, SamplerChannel=%d)\n", dVolume, uiSamplerChannel));
1369      pEngine->Volume = Volume;      LSCPResultSet result;
1370      return "OK\r\n";      try {
1371            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1372            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1373            EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
1374            if (!pEngineChannel) throw LinuxSamplerException("No engine type assigned to sampler channel");
1375            pEngineChannel->Volume(dVolume);
1376        }
1377        catch (LinuxSamplerException e) {
1378             result.Error(e);
1379        }
1380        return result.Produce();
1381  }  }
1382    
1383  /**  /**
1384   * Will be called by the parser to reset a particular sampler channel.   * Will be called by the parser to reset a particular sampler channel.
1385   */   */
1386  String LSCPServer::ResetChannel(uint SamplerChannel) {  String LSCPServer::ResetChannel(uint uiSamplerChannel) {
1387      dmsg(2,("LSCPServer: ResetChannel(SamplerChannel=%d)\n", SamplerChannel));      dmsg(2,("LSCPServer: ResetChannel(SamplerChannel=%d)\n", uiSamplerChannel));
1388      pEngine->Reset();      LSCPResultSet result;
1389      return "OK\r\n";      try {
1390            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1391            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1392            EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
1393            if (!pEngineChannel) throw LinuxSamplerException("No engine type assigned to sampler channel");
1394            pEngineChannel->GetEngine()->Reset();
1395        }
1396        catch (LinuxSamplerException e) {
1397             result.Error(e);
1398        }
1399        return result.Produce();
1400    }
1401    
1402    /**
1403     * Will be called by the parser to reset the whole sampler.
1404     */
1405    String LSCPServer::ResetSampler() {
1406        dmsg(2,("LSCPServer: ResetSampler()\n"));
1407        pSampler->Reset();
1408        LSCPResultSet result;
1409        return result.Produce();
1410    }
1411    
1412    /**
1413     * Will be called by the parser to return general informations about this
1414     * sampler.
1415     */
1416    String LSCPServer::GetServerInfo() {
1417        dmsg(2,("LSCPServer: GetServerInfo()\n"));
1418        LSCPResultSet result;
1419        result.Add("DESCRIPTION", "LinuxSampler - modular, streaming capable sampler");
1420        result.Add("VERSION", VERSION);    
1421        return result.Produce();
1422  }  }
1423    
1424  /**  /**
1425   * 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
1426   * server for receiving event messages.   * server for receiving event messages.
1427   */   */
1428  String LSCPServer::SubscribeNotification(uint UDPPort) {  String LSCPServer::SubscribeNotification(LSCPEvent::event_t type) {
1429      dmsg(2,("LSCPServer: SubscribeNotification(UDPPort=%d)\n", UDPPort));      dmsg(2,("LSCPServer: SubscribeNotification(Event=%s)\n", LSCPEvent::Name(type).c_str()));
1430      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result;
1431        SubscriptionMutex.Lock();
1432        eventSubscriptions[type].push_back(currentSocket);
1433        SubscriptionMutex.Unlock();
1434        return result.Produce();
1435  }  }
1436    
1437  /**  /**
1438   * 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
1439   * for not receiving further event messages.   * for not receiving further event messages.
1440   */   */
1441  String LSCPServer::UnsubscribeNotification(String SessionID) {  String LSCPServer::UnsubscribeNotification(LSCPEvent::event_t type) {
1442      dmsg(2,("LSCPServer: UnsubscribeNotification(SessionID=%s)\n", SessionID.c_str()));      dmsg(2,("LSCPServer: UnsubscribeNotification(Event=%s)\n", LSCPEvent::Name(type).c_str()));
1443      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result;
1444        SubscriptionMutex.Lock();
1445        eventSubscriptions[type].remove(currentSocket);
1446        SubscriptionMutex.Unlock();
1447        return result.Produce();
1448    }
1449    
1450    static int select_callback(void * lscpResultSet, int argc,
1451                            char **argv, char **azColName)
1452    {
1453        LSCPResultSet* resultSet = (LSCPResultSet*) lscpResultSet;
1454        resultSet->Add(argc, argv);
1455        return 0;
1456    }
1457    
1458    String LSCPServer::QueryDatabase(String query) {
1459        LSCPResultSet result;
1460    #if HAVE_SQLITE3
1461        char* zErrMsg = NULL;
1462        sqlite3 *db;
1463        String selectStr = "SELECT " + query;
1464    
1465        int rc = sqlite3_open("linuxsampler.db", &db);
1466        if (rc == SQLITE_OK)
1467        {
1468                rc = sqlite3_exec(db, selectStr.c_str(), select_callback, &result, &zErrMsg);
1469        }
1470        if ( rc != SQLITE_OK )
1471        {
1472                result.Error(String(zErrMsg), rc);
1473        }
1474        sqlite3_close(db);
1475    #else
1476        result.Error(String("SQLITE3 was not installed when linuxsampler was built. SELECT statement is not available."), 0);
1477    #endif
1478        return result.Produce();
1479    }
1480    
1481    /**
1482     * Will be called by the parser to enable or disable echo mode; if echo
1483     * mode is enabled, all commands from the client will (immediately) be
1484     * echoed back to the client.
1485     */
1486    String LSCPServer::SetEcho(yyparse_param_t* pSession, double boolean_value) {
1487        dmsg(2,("LSCPServer: SetEcho(val=%f)\n", boolean_value));
1488        LSCPResultSet result;
1489        try {
1490            if      (boolean_value == 0) pSession->bVerbose = false;
1491            else if (boolean_value == 1) pSession->bVerbose = true;
1492            else throw LinuxSamplerException("Not a boolean value, must either be 0 or 1");
1493        }
1494        catch (LinuxSamplerException e) {
1495             result.Error(e);
1496        }
1497        return result.Produce();
1498  }  }

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