/[svn]/linuxsampler/trunk/src/network/lscpserver.cpp
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revision 35 by schoenebeck, Fri Mar 5 13:46:15 2004 UTC revision 475 by schoenebeck, Thu Mar 17 23:56:56 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_channels, "CHANNELS");
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_info, "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  /**  /**
# Line 129  String LSCPServer::RemoveChannel(uint Sa Line 554  String LSCPServer::RemoveChannel(uint Sa
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("GigEngine");
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 descriptions for a particular
563     * sampler engine.
564   */   */
565  String LSCPServer::GetEngineInfo(String EngineName) {  String LSCPServer::GetEngineInfo(String EngineName) {
566      dmsg(2,("LSCPServer: GetEngineInfo(EngineName=%s)\n", EngineName.c_str()));      dmsg(2,("LSCPServer: GetEngineInfo(EngineName=%s)\n", EngineName.c_str()));
567      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result;
568        try {
569            Engine* pEngine = EngineFactory::Create(EngineName);
570            result.Add("DESCRIPTION", pEngine->Description());
571            result.Add("VERSION",     pEngine->Version());
572            delete pEngine;
573        }
574        catch (LinuxSamplerException e) {
575             result.Error(e);
576        }
577        return result.Produce();
578  }  }
579    
580  /**  /**
581   * Will be called by the parser to get informations about a particular   * Will be called by the parser to get informations about a particular
582   * sampler channel.   * sampler channel.
583   */   */
584  String LSCPServer::GetChannelInfo(uint SamplerChannel) {  String LSCPServer::GetChannelInfo(uint uiSamplerChannel) {
585      dmsg(2,("LSCPServer: GetChannelInfo(SamplerChannel=%d)\n", SamplerChannel));      dmsg(2,("LSCPServer: GetChannelInfo(SamplerChannel=%d)\n", uiSamplerChannel));
586      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result;
587        try {
588            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
589            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
590            EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
591    
592            //Defaults values
593            String EngineName = "NONE";
594            float Volume = 0.0f;
595            String InstrumentFileName = "NONE";
596            String InstrumentName = "NONE";
597            int InstrumentIndex = -1;
598            int InstrumentStatus = -1;
599            int AudioOutputChannels = 0;
600            String AudioRouting;
601    
602            if (pEngineChannel) {
603                EngineName          = pEngineChannel->EngineName();
604                AudioOutputChannels = pEngineChannel->Channels();
605                Volume              = pEngineChannel->Volume();
606                InstrumentStatus    = pEngineChannel->InstrumentStatus();
607                InstrumentIndex     = pEngineChannel->InstrumentIndex();
608                if (InstrumentIndex != -1) {
609                    InstrumentFileName = pEngineChannel->InstrumentFileName();
610                    InstrumentName     = pEngineChannel->InstrumentName();
611                }
612                for (int chan = 0; chan < pEngineChannel->Channels(); chan++) {
613                    if (AudioRouting != "") AudioRouting += ",";
614                    AudioRouting += ToString(pEngineChannel->OutputChannel(chan));
615                }
616            }
617    
618            result.Add("ENGINE_NAME", EngineName);
619            result.Add("VOLUME", Volume);
620    
621            //Some not-so-hardcoded stuff to make GUI look good
622            result.Add("AUDIO_OUTPUT_DEVICE", GetAudioOutputDeviceIndex(pSamplerChannel->GetAudioOutputDevice()));
623            result.Add("AUDIO_OUTPUT_CHANNELS", AudioOutputChannels);
624            result.Add("AUDIO_OUTPUT_ROUTING", AudioRouting);
625    
626            result.Add("MIDI_INPUT_DEVICE", GetMidiInputDeviceIndex(pSamplerChannel->GetMidiInputDevice()));
627            result.Add("MIDI_INPUT_PORT", pSamplerChannel->GetMidiInputPort());
628            if (pSamplerChannel->GetMidiInputChannel() == MidiInputPort::midi_chan_all) result.Add("MIDI_INPUT_CHANNEL", "ALL");
629            else result.Add("MIDI_INPUT_CHANNEL", pSamplerChannel->GetMidiInputChannel());
630    
631            result.Add("INSTRUMENT_FILE", InstrumentFileName);
632            result.Add("INSTRUMENT_NR", InstrumentIndex);
633            result.Add("INSTRUMENT_NAME", InstrumentName);
634            result.Add("INSTRUMENT_STATUS", InstrumentStatus);
635        }
636        catch (LinuxSamplerException e) {
637             result.Error(e);
638        }
639        return result.Produce();
640  }  }
641    
642  /**  /**
643   * 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
644   * particular sampler channel.   * particular sampler channel.
645   */   */
646  String LSCPServer::GetVoiceCount(uint SamplerChannel) {  String LSCPServer::GetVoiceCount(uint uiSamplerChannel) {
647      dmsg(2,("LSCPServer: GetVoiceCount(SamplerChannel=%d)\n", SamplerChannel));      dmsg(2,("LSCPServer: GetVoiceCount(SamplerChannel=%d)\n", uiSamplerChannel));
648      return ToString(pEngine->ActiveVoiceCount) + "\r\n";      LSCPResultSet result;
649        try {
650            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
651            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
652            EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
653            if (!pEngineChannel) throw LinuxSamplerException("No engine loaded on sampler channel");
654            result.Add(pEngineChannel->GetEngine()->VoiceCount());
655        }
656        catch (LinuxSamplerException e) {
657             result.Error(e);
658        }
659        return result.Produce();
660  }  }
661    
662  /**  /**
663   * 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
664   * particular sampler channel.   * particular sampler channel.
665   */   */
666  String LSCPServer::GetStreamCount(uint SamplerChannel) {  String LSCPServer::GetStreamCount(uint uiSamplerChannel) {
667      dmsg(2,("LSCPServer: GetStreamCount(SamplerChannel=%d)\n", SamplerChannel));      dmsg(2,("LSCPServer: GetStreamCount(SamplerChannel=%d)\n", uiSamplerChannel));
668      return ToString(pEngine->pDiskThread->ActiveStreamCount) + "\r\n";      LSCPResultSet result;
669        try {
670            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
671            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
672            EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
673            if (!pEngineChannel) throw LinuxSamplerException("No engine type assigned to sampler channel");
674            result.Add(pEngineChannel->GetEngine()->DiskStreamCount());
675        }
676        catch (LinuxSamplerException e) {
677             result.Error(e);
678        }
679        return result.Produce();
680  }  }
681    
682  /**  /**
683   * 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
684   * streams on a particular sampler channel.   * streams on a particular sampler channel.
685   */   */
686  String LSCPServer::GetBufferFill(fill_response_t ResponseType, uint SamplerChannel) {  String LSCPServer::GetBufferFill(fill_response_t ResponseType, uint uiSamplerChannel) {
687      dmsg(2,("LSCPServer: GetBufferFill(ResponseType=%d, SamplerChannel=%d)\n", ResponseType, SamplerChannel));      dmsg(2,("LSCPServer: GetBufferFill(ResponseType=%d, SamplerChannel=%d)\n", ResponseType, uiSamplerChannel));
688      return (ResponseType == fill_response_bytes) ? pEngine->pDiskThread->GetBufferFillBytes() + "\r\n"      LSCPResultSet result;
689                                                   : pEngine->pDiskThread->GetBufferFillPercentage() + "\r\n";      try {
690            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
691            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
692            EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
693            if (!pEngineChannel) throw LinuxSamplerException("No engine type assigned to sampler channel");
694            if (!pEngineChannel->GetEngine()->DiskStreamSupported()) result.Add("NA");
695            else {
696                switch (ResponseType) {
697                    case fill_response_bytes:
698                        result.Add(pEngineChannel->GetEngine()->DiskStreamBufferFillBytes());
699                        break;
700                    case fill_response_percentage:
701                        result.Add(pEngineChannel->GetEngine()->DiskStreamBufferFillPercentage());
702                        break;
703                    default:
704                        throw LinuxSamplerException("Unknown fill response type");
705                }
706            }
707        }
708        catch (LinuxSamplerException e) {
709             result.Error(e);
710        }
711        return result.Produce();
712  }  }
713    
714  /**  String LSCPServer::GetAvailableAudioOutputDrivers() {
715   * Will be called by the parser to change the audio output type on a      dmsg(2,("LSCPServer: GetAvailableAudioOutputDrivers()\n"));
716   * particular sampler channel.      LSCPResultSet result;
717   */      try {
718  String LSCPServer::SetAudioOutputType(audio_output_type_t AudioOutputType, uint SamplerChannel) {          String s = AudioOutputDeviceFactory::AvailableDriversAsString();
719      dmsg(2,("LSCPServer: SetAudioOutputType(AudioOutputType=%d, SamplerChannel=%d)\n", AudioOutputType, SamplerChannel));          result.Add(s);
720      return "ERR:0:Not implemented yet.\r\n";      }
721        catch (LinuxSamplerException e) {
722            result.Error(e);
723        }
724        return result.Produce();
725    }
726    
727    String LSCPServer::GetAvailableMidiInputDrivers() {
728        dmsg(2,("LSCPServer: GetAvailableMidiInputDrivers()\n"));
729        LSCPResultSet result;
730        try {
731            String s = MidiInputDeviceFactory::AvailableDriversAsString();
732            result.Add(s);
733        }
734        catch (LinuxSamplerException e) {
735            result.Error(e);
736        }
737        return result.Produce();
738    }
739    
740    String LSCPServer::GetMidiInputDriverInfo(String Driver) {
741        dmsg(2,("LSCPServer: GetMidiInputDriverInfo(Driver=%s)\n",Driver.c_str()));
742        LSCPResultSet result;
743        try {
744            result.Add("DESCRIPTION", MidiInputDeviceFactory::GetDriverDescription(Driver));
745            result.Add("VERSION",     MidiInputDeviceFactory::GetDriverVersion(Driver));
746    
747            std::map<String,DeviceCreationParameter*> parameters = MidiInputDeviceFactory::GetAvailableDriverParameters(Driver);
748            if (parameters.size()) { // if there are parameters defined for this driver
749                String s;
750                std::map<String,DeviceCreationParameter*>::iterator iter = parameters.begin();
751                for (;iter != parameters.end(); iter++) {
752                    if (s != "") s += ",";
753                    s += iter->first;
754                }
755                result.Add("PARAMETERS", s);
756            }
757        }
758        catch (LinuxSamplerException e) {
759            result.Error(e);
760        }
761        return result.Produce();
762    }
763    
764    String LSCPServer::GetAudioOutputDriverInfo(String Driver) {
765        dmsg(2,("LSCPServer: GetAudioOutputDriverInfo(Driver=%s)\n",Driver.c_str()));
766        LSCPResultSet result;
767        try {
768            result.Add("DESCRIPTION", AudioOutputDeviceFactory::GetDriverDescription(Driver));
769            result.Add("VERSION",     AudioOutputDeviceFactory::GetDriverVersion(Driver));
770    
771            std::map<String,DeviceCreationParameter*> parameters = AudioOutputDeviceFactory::GetAvailableDriverParameters(Driver);
772            if (parameters.size()) { // if there are parameters defined for this driver
773                String s;
774                std::map<String,DeviceCreationParameter*>::iterator iter = parameters.begin();
775                for (;iter != parameters.end(); iter++) {
776                    if (s != "") s += ",";
777                    s += iter->first;
778                }
779                result.Add("PARAMETERS", s);
780            }
781        }
782        catch (LinuxSamplerException e) {
783            result.Error(e);
784        }
785        return result.Produce();
786    }
787    
788    String LSCPServer::GetMidiInputDriverParameterInfo(String Driver, String Parameter, std::map<String,String> DependencyList) {
789        dmsg(2,("LSCPServer: GetMidiInputDriverParameterInfo(Driver=%s,Parameter=%s,DependencyListSize=%d)\n",Driver.c_str(),Parameter.c_str(),DependencyList.size()));
790        LSCPResultSet result;
791        try {
792            DeviceCreationParameter* pParameter = MidiInputDeviceFactory::GetDriverParameter(Driver, Parameter);
793            result.Add("TYPE",         pParameter->Type());
794            result.Add("DESCRIPTION",  pParameter->Description());
795            result.Add("MANDATORY",    pParameter->Mandatory());
796            result.Add("FIX",          pParameter->Fix());
797            result.Add("MULTIPLICITY", pParameter->Multiplicity());
798            optional<String> oDepends       = pParameter->Depends();
799            optional<String> oDefault       = pParameter->Default(DependencyList);
800            optional<String> oRangeMin      = pParameter->RangeMin(DependencyList);
801            optional<String> oRangeMax      = pParameter->RangeMax(DependencyList);
802            optional<String> oPossibilities = pParameter->Possibilities(DependencyList);
803            if (oDepends)       result.Add("DEPENDS",       *oDepends);
804            if (oDefault)       result.Add("DEFAULT",       *oDefault);
805            if (oRangeMin)      result.Add("RANGE_MIN",     *oRangeMin);
806            if (oRangeMax)      result.Add("RANGE_MAX",     *oRangeMax);
807            if (oPossibilities) result.Add("POSSIBILITIES", *oPossibilities);
808        }
809        catch (LinuxSamplerException e) {
810            result.Error(e);
811        }
812        return result.Produce();
813    }
814    
815    String LSCPServer::GetAudioOutputDriverParameterInfo(String Driver, String Parameter, std::map<String,String> DependencyList) {
816        dmsg(2,("LSCPServer: GetAudioOutputDriverParameterInfo(Driver=%s,Parameter=%s,DependencyListSize=%d)\n",Driver.c_str(),Parameter.c_str(),DependencyList.size()));
817        LSCPResultSet result;
818        try {
819            DeviceCreationParameter* pParameter = AudioOutputDeviceFactory::GetDriverParameter(Driver, Parameter);
820            result.Add("TYPE",         pParameter->Type());
821            result.Add("DESCRIPTION",  pParameter->Description());
822            result.Add("MANDATORY",    pParameter->Mandatory());
823            result.Add("FIX",          pParameter->Fix());
824            result.Add("MULTIPLICITY", pParameter->Multiplicity());
825            optional<String> oDepends       = pParameter->Depends();
826            optional<String> oDefault       = pParameter->Default(DependencyList);
827            optional<String> oRangeMin      = pParameter->RangeMin(DependencyList);
828            optional<String> oRangeMax      = pParameter->RangeMax(DependencyList);
829            optional<String> oPossibilities = pParameter->Possibilities(DependencyList);
830            if (oDepends)       result.Add("DEPENDS",       *oDepends);
831            if (oDefault)       result.Add("DEFAULT",       *oDefault);
832            if (oRangeMin)      result.Add("RANGE_MIN",     *oRangeMin);
833            if (oRangeMax)      result.Add("RANGE_MAX",     *oRangeMax);
834            if (oPossibilities) result.Add("POSSIBILITIES", *oPossibilities);
835        }
836        catch (LinuxSamplerException e) {
837            result.Error(e);
838        }
839        return result.Produce();
840    }
841    
842    String LSCPServer::GetAudioOutputDeviceCount() {
843        dmsg(2,("LSCPServer: GetAudioOutputDeviceCount()\n"));
844        LSCPResultSet result;
845        try {
846            uint count = pSampler->AudioOutputDevices();
847            result.Add(count); // success
848        }
849        catch (LinuxSamplerException e) {
850            result.Error(e);
851        }
852        return result.Produce();
853    }
854    
855    String LSCPServer::GetMidiInputDeviceCount() {
856        dmsg(2,("LSCPServer: GetMidiInputDeviceCount()\n"));
857        LSCPResultSet result;
858        try {
859            uint count = pSampler->MidiInputDevices();
860            result.Add(count); // success
861        }
862        catch (LinuxSamplerException e) {
863            result.Error(e);
864        }
865        return result.Produce();
866    }
867    
868    String LSCPServer::GetAudioOutputDevices() {
869        dmsg(2,("LSCPServer: GetAudioOutputDevices()\n"));
870        LSCPResultSet result;
871        try {
872            String s;
873            std::map<uint, AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
874            std::map<uint, AudioOutputDevice*>::iterator iter = devices.begin();
875            for (; iter != devices.end(); iter++) {
876                if (s != "") s += ",";
877                s += ToString(iter->first);
878            }
879            result.Add(s);
880        }
881        catch (LinuxSamplerException e) {
882            result.Error(e);
883        }
884        return result.Produce();
885    }
886    
887    String LSCPServer::GetMidiInputDevices() {
888        dmsg(2,("LSCPServer: GetMidiInputDevices()\n"));
889        LSCPResultSet result;
890        try {
891            String s;
892            std::map<uint, MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
893            std::map<uint, MidiInputDevice*>::iterator iter = devices.begin();
894            for (; iter != devices.end(); iter++) {
895                if (s != "") s += ",";
896                s += ToString(iter->first);
897            }
898            result.Add(s);
899        }
900        catch (LinuxSamplerException e) {
901            result.Error(e);
902        }
903        return result.Produce();
904    }
905    
906    String LSCPServer::GetAudioOutputDeviceInfo(uint DeviceIndex) {
907        dmsg(2,("LSCPServer: GetAudioOutputDeviceInfo(DeviceIndex=%d)\n",DeviceIndex));
908        LSCPResultSet result;
909        try {
910            std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
911            if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceIndex) + ".");
912            AudioOutputDevice* pDevice = devices[DeviceIndex];
913            result.Add("DRIVER", pDevice->Driver());
914            std::map<String,DeviceCreationParameter*> parameters = pDevice->DeviceParameters();
915            std::map<String,DeviceCreationParameter*>::iterator iter = parameters.begin();
916            for (; iter != parameters.end(); iter++) {
917                result.Add(iter->first, iter->second->Value());
918            }
919        }
920        catch (LinuxSamplerException e) {
921            result.Error(e);
922        }
923        return result.Produce();
924    }
925    
926    String LSCPServer::GetMidiInputDeviceInfo(uint DeviceIndex) {
927        dmsg(2,("LSCPServer: GetMidiInputDeviceInfo(DeviceIndex=%d)\n",DeviceIndex));
928        LSCPResultSet result;
929        try {
930            std::map<uint,MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
931            if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(DeviceIndex) + ".");
932            MidiInputDevice* pDevice = devices[DeviceIndex];
933            result.Add("DRIVER", pDevice->Driver());
934            std::map<String,DeviceCreationParameter*> parameters = pDevice->DeviceParameters();
935            std::map<String,DeviceCreationParameter*>::iterator iter = parameters.begin();
936            for (; iter != parameters.end(); iter++) {
937                result.Add(iter->first, iter->second->Value());
938            }
939        }
940        catch (LinuxSamplerException e) {
941            result.Error(e);
942        }
943        return result.Produce();
944    }
945    String LSCPServer::GetMidiInputPortInfo(uint DeviceIndex, uint PortIndex) {
946        dmsg(2,("LSCPServer: GetMidiInputPortInfo(DeviceIndex=%d, PortIndex=%d)\n",DeviceIndex, PortIndex));
947        LSCPResultSet result;
948        try {
949            // get MIDI input device
950            std::map<uint,MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
951            if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(DeviceIndex) + ".");
952            MidiInputDevice* pDevice = devices[DeviceIndex];
953    
954            // get MIDI port
955            MidiInputPort* pMidiInputPort = pDevice->GetPort(PortIndex);
956            if (!pMidiInputPort) throw LinuxSamplerException("There is no MIDI input port with index " + ToString(PortIndex) + ".");
957    
958            // return the values of all MIDI port parameters
959            std::map<String,DeviceRuntimeParameter*> parameters = pMidiInputPort->PortParameters();
960            std::map<String,DeviceRuntimeParameter*>::iterator iter = parameters.begin();
961            for (; iter != parameters.end(); iter++) {
962                result.Add(iter->first, iter->second->Value());
963            }
964        }
965        catch (LinuxSamplerException e) {
966            result.Error(e);
967        }
968        return result.Produce();
969    }
970    
971    String LSCPServer::GetAudioOutputChannelInfo(uint DeviceId, uint ChannelId) {
972        dmsg(2,("LSCPServer: GetAudioOutputChannelInfo(DeviceId=%d,ChannelId)\n",DeviceId,ChannelId));
973        LSCPResultSet result;
974        try {
975            // get audio output device
976            std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
977            if (!devices.count(DeviceId)) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceId) + ".");
978            AudioOutputDevice* pDevice = devices[DeviceId];
979    
980            // get audio channel
981            AudioChannel* pChannel = pDevice->Channel(ChannelId);
982            if (!pChannel) throw LinuxSamplerException("Audio output device does not have audio channel " + ToString(ChannelId) + ".");
983    
984            // return the values of all audio channel parameters
985            std::map<String,DeviceRuntimeParameter*> parameters = pChannel->ChannelParameters();
986            std::map<String,DeviceRuntimeParameter*>::iterator iter = parameters.begin();
987            for (; iter != parameters.end(); iter++) {
988                result.Add(iter->first, iter->second->Value());
989            }
990        }
991        catch (LinuxSamplerException e) {
992            result.Error(e);
993        }
994        return result.Produce();
995    }
996    
997    String LSCPServer::GetMidiInputPortParameterInfo(uint DeviceId, uint PortId, String ParameterName) {
998        dmsg(2,("LSCPServer: GetMidiInputPortParameterInfo(DeviceId=%d,PortId=%d,ParameterName=%s)\n",DeviceId,PortId,ParameterName.c_str()));
999        LSCPResultSet result;
1000        try {
1001            // get MIDI input device
1002            std::map<uint,MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
1003            if (!devices.count(DeviceId)) throw LinuxSamplerException("There is no midi input device with index " + ToString(DeviceId) + ".");
1004            MidiInputDevice* pDevice = devices[DeviceId];
1005    
1006            // get midi port
1007            MidiInputPort* pPort = pDevice->GetPort(PortId);
1008            if (!pPort) throw LinuxSamplerException("Midi input device does not have port " + ToString(PortId) + ".");
1009    
1010            // get desired port parameter
1011            std::map<String,DeviceRuntimeParameter*> parameters = pPort->PortParameters();
1012            if (!parameters.count(ParameterName)) throw LinuxSamplerException("Midi port does not provide a parameter '" + ParameterName + "'.");
1013            DeviceRuntimeParameter* pParameter = parameters[ParameterName];
1014    
1015            // return all fields of this audio channel parameter
1016            result.Add("TYPE",         pParameter->Type());
1017            result.Add("DESCRIPTION",  pParameter->Description());
1018            result.Add("FIX",          pParameter->Fix());
1019            result.Add("MULTIPLICITY", pParameter->Multiplicity());
1020            if (pParameter->RangeMin())      result.Add("RANGE_MIN",     *pParameter->RangeMin());
1021            if (pParameter->RangeMax())      result.Add("RANGE_MAX",     *pParameter->RangeMax());
1022            if (pParameter->Possibilities()) result.Add("POSSIBILITIES", *pParameter->Possibilities());
1023        }
1024        catch (LinuxSamplerException e) {
1025            result.Error(e);
1026        }
1027        return result.Produce();
1028    }
1029    
1030    String LSCPServer::GetAudioOutputChannelParameterInfo(uint DeviceId, uint ChannelId, String ParameterName) {
1031        dmsg(2,("LSCPServer: GetAudioOutputChannelParameterInfo(DeviceId=%d,ChannelId=%d,ParameterName=%s)\n",DeviceId,ChannelId,ParameterName.c_str()));
1032        LSCPResultSet result;
1033        try {
1034            // get audio output device
1035            std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
1036            if (!devices.count(DeviceId)) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceId) + ".");
1037            AudioOutputDevice* pDevice = devices[DeviceId];
1038    
1039            // get audio channel
1040            AudioChannel* pChannel = pDevice->Channel(ChannelId);
1041            if (!pChannel) throw LinuxSamplerException("Audio output device does not have audio channel " + ToString(ChannelId) + ".");
1042    
1043            // get desired audio channel parameter
1044            std::map<String,DeviceRuntimeParameter*> parameters = pChannel->ChannelParameters();
1045            if (!parameters.count(ParameterName)) throw LinuxSamplerException("Audio channel does not provide a parameter '" + ParameterName + "'.");
1046            DeviceRuntimeParameter* pParameter = parameters[ParameterName];
1047    
1048            // return all fields of this audio channel parameter
1049            result.Add("TYPE",         pParameter->Type());
1050            result.Add("DESCRIPTION",  pParameter->Description());
1051            result.Add("FIX",          pParameter->Fix());
1052            result.Add("MULTIPLICITY", pParameter->Multiplicity());
1053            if (pParameter->RangeMin())      result.Add("RANGE_MIN",     *pParameter->RangeMin());
1054            if (pParameter->RangeMax())      result.Add("RANGE_MAX",     *pParameter->RangeMax());
1055            if (pParameter->Possibilities()) result.Add("POSSIBILITIES", *pParameter->Possibilities());
1056        }
1057        catch (LinuxSamplerException e) {
1058            result.Error(e);
1059        }
1060        return result.Produce();
1061    }
1062    
1063    String LSCPServer::SetAudioOutputChannelParameter(uint DeviceId, uint ChannelId, String ParamKey, String ParamVal) {
1064        dmsg(2,("LSCPServer: SetAudioOutputChannelParameter(DeviceId=%d,ChannelId=%d,ParamKey=%s,ParamVal=%s)\n",DeviceId,ChannelId,ParamKey.c_str(),ParamVal.c_str()));
1065        LSCPResultSet result;
1066        try {
1067            // get audio output device
1068            std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
1069            if (!devices.count(DeviceId)) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceId) + ".");
1070            AudioOutputDevice* pDevice = devices[DeviceId];
1071    
1072            // get audio channel
1073            AudioChannel* pChannel = pDevice->Channel(ChannelId);
1074            if (!pChannel) throw LinuxSamplerException("Audio output device does not have audio channel " + ToString(ChannelId) + ".");
1075    
1076            // get desired audio channel parameter
1077            std::map<String,DeviceRuntimeParameter*> parameters = pChannel->ChannelParameters();
1078            if (!parameters.count(ParamKey)) throw LinuxSamplerException("Audio channel does not provide a parameter '" + ParamKey + "'.");
1079            DeviceRuntimeParameter* pParameter = parameters[ParamKey];
1080    
1081            // set new channel parameter value
1082            pParameter->SetValue(ParamVal);
1083        }
1084        catch (LinuxSamplerException e) {
1085            result.Error(e);
1086        }
1087        return result.Produce();
1088    }
1089    
1090    String LSCPServer::SetAudioOutputDeviceParameter(uint DeviceIndex, String ParamKey, String ParamVal) {
1091        dmsg(2,("LSCPServer: SetAudioOutputDeviceParameter(DeviceIndex=%d,ParamKey=%s,ParamVal=%s)\n",DeviceIndex,ParamKey.c_str(),ParamVal.c_str()));
1092        LSCPResultSet result;
1093        try {
1094            std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
1095            if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceIndex) + ".");
1096            AudioOutputDevice* pDevice = devices[DeviceIndex];
1097            std::map<String,DeviceCreationParameter*> parameters = pDevice->DeviceParameters();
1098            if (!parameters.count(ParamKey)) throw LinuxSamplerException("Audio output device " + ToString(DeviceIndex) + " does not have a device parameter '" + ParamKey + "'");
1099            parameters[ParamKey]->SetValue(ParamVal);
1100        }
1101        catch (LinuxSamplerException e) {
1102            result.Error(e);
1103        }
1104        return result.Produce();
1105    }
1106    
1107    String LSCPServer::SetMidiInputDeviceParameter(uint DeviceIndex, String ParamKey, String ParamVal) {
1108        dmsg(2,("LSCPServer: SetMidiOutputDeviceParameter(DeviceIndex=%d,ParamKey=%s,ParamVal=%s)\n",DeviceIndex,ParamKey.c_str(),ParamVal.c_str()));
1109        LSCPResultSet result;
1110        try {
1111            std::map<uint,MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
1112            if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(DeviceIndex) + ".");
1113            MidiInputDevice* pDevice = devices[DeviceIndex];
1114            std::map<String,DeviceCreationParameter*> parameters = pDevice->DeviceParameters();
1115            if (!parameters.count(ParamKey)) throw LinuxSamplerException("MIDI input device " + ToString(DeviceIndex) + " does not have a device parameter '" + ParamKey + "'");
1116            parameters[ParamKey]->SetValue(ParamVal);
1117        }
1118        catch (LinuxSamplerException e) {
1119            result.Error(e);
1120        }
1121        return result.Produce();
1122    }
1123    
1124    String LSCPServer::SetMidiInputPortParameter(uint DeviceIndex, uint PortIndex, String ParamKey, String ParamVal) {
1125        dmsg(2,("LSCPServer: SetMidiOutputDeviceParameter(DeviceIndex=%d,ParamKey=%s,ParamVal=%s)\n",DeviceIndex,ParamKey.c_str(),ParamVal.c_str()));
1126        LSCPResultSet result;
1127        try {
1128            // get MIDI input device
1129            std::map<uint,MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
1130            if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(DeviceIndex) + ".");
1131            MidiInputDevice* pDevice = devices[DeviceIndex];
1132    
1133            // get MIDI port
1134            MidiInputPort* pMidiInputPort = pDevice->GetPort(PortIndex);
1135            if (!pMidiInputPort) throw LinuxSamplerException("There is no MIDI input port with index " + ToString(PortIndex) + ".");
1136    
1137            // set port parameter value
1138            std::map<String,DeviceRuntimeParameter*> parameters = pMidiInputPort->PortParameters();
1139            if (!parameters.count(ParamKey)) throw LinuxSamplerException("MIDI input device " + ToString(PortIndex) + " does not have a parameter '" + ParamKey + "'");
1140            parameters[ParamKey]->SetValue(ParamVal);
1141        }
1142        catch (LinuxSamplerException e) {
1143            result.Error(e);
1144        }
1145        return result.Produce();
1146  }  }
1147    
1148  /**  /**
1149   * 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
1150   * playback on a particular sampler channel.   * playback on a particular sampler channel.
1151   */   */
1152  String LSCPServer::SetAudioOutputChannel(uint AudioOutputChannel, uint SamplerChannel) {  String LSCPServer::SetAudioOutputChannel(uint ChannelAudioOutputChannel, uint AudioOutputDeviceInputChannel, uint uiSamplerChannel) {
1153      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));
1154      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result;
1155        try {
1156            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1157            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1158            EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
1159            if (!pEngineChannel) throw LinuxSamplerException("No engine type yet assigned to sampler channel " + ToString(uiSamplerChannel));
1160            if (!pSamplerChannel->GetAudioOutputDevice()) throw LinuxSamplerException("No audio output device connected to sampler channel " + ToString(uiSamplerChannel));
1161            pEngineChannel->SetOutputChannel(ChannelAudioOutputChannel, AudioOutputDeviceInputChannel);
1162        }
1163        catch (LinuxSamplerException e) {
1164             result.Error(e);
1165        }
1166        return result.Produce();
1167  }  }
1168    
1169  /**  String LSCPServer::SetAudioOutputDevice(uint AudioDeviceId, uint uiSamplerChannel) {
1170   * 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));
1171   * engine of a particular sampler channel should listen to.      LSCPResultSet result;
1172   */      try {
1173  String LSCPServer::SetMIDIInputPort(String MIDIInputPort, uint Samplerchannel) {          SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1174      dmsg(2,("LSCPServer: SetMIDIInputPort(MIDIInputPort=%s, Samplerchannel=%d)\n", MIDIInputPort.c_str(), Samplerchannel));          if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1175      return "ERR:0:Not implemented yet.\r\n";          std::map<uint, AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
1176            if (!devices.count(AudioDeviceId)) throw LinuxSamplerException("There is no audio output device with index " + ToString(AudioDeviceId));
1177            AudioOutputDevice* pDevice = devices[AudioDeviceId];
1178            pSamplerChannel->SetAudioOutputDevice(pDevice);
1179        }
1180        catch (LinuxSamplerException e) {
1181             result.Error(e);
1182        }
1183        return result.Produce();
1184    }
1185    
1186    String LSCPServer::SetAudioOutputType(String AudioOutputDriver, uint uiSamplerChannel) {
1187        dmsg(2,("LSCPServer: SetAudioOutputType(String AudioOutputDriver=%s, SamplerChannel=%d)\n",AudioOutputDriver.c_str(),uiSamplerChannel));
1188        LSCPResultSet result;
1189        try {
1190            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1191            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1192            // Driver type name aliasing...
1193            if (AudioOutputDriver == "Alsa") AudioOutputDriver = "ALSA";
1194            if (AudioOutputDriver == "Jack") AudioOutputDriver = "JACK";
1195            // Check if there's one audio output device already created
1196            // for the intended audio driver type (AudioOutputDriver)...
1197            AudioOutputDevice *pDevice = NULL;
1198            std::map<uint, AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
1199            std::map<uint, AudioOutputDevice*>::iterator iter = devices.begin();
1200            for (; iter != devices.end(); iter++) {
1201                if ((iter->second)->Driver() == AudioOutputDriver) {
1202                    pDevice = iter->second;
1203                    break;
1204                }
1205            }
1206            // If it doesn't exist, create a new one with default parameters...
1207            if (pDevice == NULL) {
1208                std::map<String,String> params;
1209                pDevice = pSampler->CreateAudioOutputDevice(AudioOutputDriver, params);
1210            }
1211            // Must have a device...
1212            if (pDevice == NULL)
1213                throw LinuxSamplerException("Internal error: could not create audio output device.");
1214            // Set it as the current channel device...
1215            pSamplerChannel->SetAudioOutputDevice(pDevice);
1216        }
1217        catch (LinuxSamplerException e) {
1218             result.Error(e);
1219        }
1220        return result.Produce();
1221    }
1222    
1223    String LSCPServer::SetMIDIInputPort(uint MIDIPort, uint uiSamplerChannel) {
1224        dmsg(2,("LSCPServer: SetMIDIInputPort(MIDIPort=%d, SamplerChannel=%d)\n",MIDIPort,uiSamplerChannel));
1225        LSCPResultSet result;
1226        try {
1227            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1228            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1229            pSamplerChannel->SetMidiInputPort(MIDIPort);
1230        }
1231        catch (LinuxSamplerException e) {
1232             result.Error(e);
1233        }
1234        return result.Produce();
1235    }
1236    
1237    String LSCPServer::SetMIDIInputChannel(uint MIDIChannel, uint uiSamplerChannel) {
1238        dmsg(2,("LSCPServer: SetMIDIInputChannel(MIDIChannel=%d, SamplerChannel=%d)\n",MIDIChannel,uiSamplerChannel));
1239        LSCPResultSet result;
1240        try {
1241            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1242            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1243            pSamplerChannel->SetMidiInputChannel((MidiInputPort::midi_chan_t) MIDIChannel);
1244        }
1245        catch (LinuxSamplerException e) {
1246             result.Error(e);
1247        }
1248        return result.Produce();
1249    }
1250    
1251    String LSCPServer::SetMIDIInputDevice(uint MIDIDeviceId, uint uiSamplerChannel) {
1252        dmsg(2,("LSCPServer: SetMIDIInputDevice(MIDIDeviceId=%d, SamplerChannel=%d)\n",MIDIDeviceId,uiSamplerChannel));
1253        LSCPResultSet result;
1254        try {
1255            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1256            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1257            std::map<uint, MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
1258            if (!devices.count(MIDIDeviceId)) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(MIDIDeviceId));
1259            MidiInputDevice* pDevice = devices[MIDIDeviceId];
1260            pSamplerChannel->SetMidiInputDevice(pDevice);
1261        }
1262        catch (LinuxSamplerException e) {
1263             result.Error(e);
1264        }
1265        return result.Produce();
1266    }
1267    
1268    String LSCPServer::SetMIDIInputType(String MidiInputDriver, uint uiSamplerChannel) {
1269        dmsg(2,("LSCPServer: SetMIDIInputType(String MidiInputDriver=%s, SamplerChannel=%d)\n",MidiInputDriver.c_str(),uiSamplerChannel));
1270        LSCPResultSet result;
1271        try {
1272            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1273            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1274            // Driver type name aliasing...
1275            if (MidiInputDriver == "Alsa") MidiInputDriver = "ALSA";
1276            // Check if there's one MIDI input device already created
1277            // for the intended MIDI driver type (MidiInputDriver)...
1278            MidiInputDevice *pDevice = NULL;
1279            std::map<uint, MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
1280            std::map<uint, MidiInputDevice*>::iterator iter = devices.begin();
1281            for (; iter != devices.end(); iter++) {
1282                if ((iter->second)->Driver() == MidiInputDriver) {
1283                    pDevice = iter->second;
1284                    break;
1285                }
1286            }
1287            // If it doesn't exist, create a new one with default parameters...
1288            if (pDevice == NULL) {
1289                std::map<String,String> params;
1290                pDevice = pSampler->CreateMidiInputDevice(MidiInputDriver, params);
1291                // Make it with at least one initial port.
1292                std::map<String,DeviceCreationParameter*> parameters = pDevice->DeviceParameters();
1293                parameters["PORTS"]->SetValue("1");
1294            }
1295            // Must have a device...
1296            if (pDevice == NULL)
1297                throw LinuxSamplerException("Internal error: could not create MIDI input device.");
1298            // Set it as the current channel device...
1299            pSamplerChannel->SetMidiInputDevice(pDevice);
1300        }
1301        catch (LinuxSamplerException e) {
1302             result.Error(e);
1303        }
1304        return result.Produce();
1305  }  }
1306    
1307  /**  /**
1308   * 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
1309   * engine of a particular sampler channel should listen to.   * engine of a particular sampler channel should listen to.
1310   */   */
1311  String LSCPServer::SetMIDIInputChannel(uint MIDIChannel, uint SamplerChannel) {  String LSCPServer::SetMIDIInput(uint MIDIDeviceId, uint MIDIPort, uint MIDIChannel, uint uiSamplerChannel) {
1312      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));
1313      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result;
1314        try {
1315            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1316            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1317            std::map<uint, MidiInputDevice*> devices =  pSampler->GetMidiInputDevices();
1318            if (!devices.count(MIDIDeviceId)) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(MIDIDeviceId));
1319            MidiInputDevice* pDevice = devices[MIDIDeviceId];
1320            pSamplerChannel->SetMidiInput(pDevice, MIDIPort, (MidiInputPort::midi_chan_t) MIDIChannel);
1321        }
1322        catch (LinuxSamplerException e) {
1323             result.Error(e);
1324        }
1325        return result.Produce();
1326  }  }
1327    
1328  /**  /**
1329   * 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
1330   * particular sampler channel.   * particular sampler channel.
1331   */   */
1332  String LSCPServer::SetVolume(double Volume, uint SamplerChannel) {  String LSCPServer::SetVolume(double dVolume, uint uiSamplerChannel) {
1333      dmsg(2,("LSCPServer: SetVolume(Volume=%f, SamplerChannel=%d)\n", Volume, SamplerChannel));      dmsg(2,("LSCPServer: SetVolume(Volume=%f, SamplerChannel=%d)\n", dVolume, uiSamplerChannel));
1334      pEngine->Volume = Volume;      LSCPResultSet result;
1335      return "OK\r\n";      try {
1336            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1337            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1338            EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
1339            if (!pEngineChannel) throw LinuxSamplerException("No engine type assigned to sampler channel");
1340            pEngineChannel->Volume(dVolume);
1341        }
1342        catch (LinuxSamplerException e) {
1343             result.Error(e);
1344        }
1345        return result.Produce();
1346  }  }
1347    
1348  /**  /**
1349   * Will be called by the parser to reset a particular sampler channel.   * Will be called by the parser to reset a particular sampler channel.
1350   */   */
1351  String LSCPServer::ResetChannel(uint SamplerChannel) {  String LSCPServer::ResetChannel(uint uiSamplerChannel) {
1352      dmsg(2,("LSCPServer: ResetChannel(SamplerChannel=%d)\n", SamplerChannel));      dmsg(2,("LSCPServer: ResetChannel(SamplerChannel=%d)\n", uiSamplerChannel));
1353      pEngine->Reset();      LSCPResultSet result;
1354      return "OK\r\n";      try {
1355            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1356            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1357            EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
1358            if (!pEngineChannel) throw LinuxSamplerException("No engine type assigned to sampler channel");
1359            pEngineChannel->GetEngine()->Reset();
1360        }
1361        catch (LinuxSamplerException e) {
1362             result.Error(e);
1363        }
1364        return result.Produce();
1365    }
1366    
1367    /**
1368     * Will be called by the parser to reset the whole sampler.
1369     */
1370    String LSCPServer::ResetSampler() {
1371        dmsg(2,("LSCPServer: ResetSampler()\n"));
1372        pSampler->Reset();
1373        LSCPResultSet result;
1374        return result.Produce();
1375  }  }
1376    
1377  /**  /**
1378   * 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
1379   * server for receiving event messages.   * server for receiving event messages.
1380   */   */
1381  String LSCPServer::SubscribeNotification(uint UDPPort) {  String LSCPServer::SubscribeNotification(LSCPEvent::event_t type) {
1382      dmsg(2,("LSCPServer: SubscribeNotification(UDPPort=%d)\n", UDPPort));      dmsg(2,("LSCPServer: SubscribeNotification(Event=%s)\n", LSCPEvent::Name(type).c_str()));
1383      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result;
1384        SubscriptionMutex.Lock();
1385        eventSubscriptions[type].push_back(currentSocket);
1386        SubscriptionMutex.Unlock();
1387        return result.Produce();
1388  }  }
1389    
1390  /**  /**
1391   * 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
1392   * for not receiving further event messages.   * for not receiving further event messages.
1393   */   */
1394  String LSCPServer::UnsubscribeNotification(String SessionID) {  String LSCPServer::UnsubscribeNotification(LSCPEvent::event_t type) {
1395      dmsg(2,("LSCPServer: UnsubscribeNotification(SessionID=%s)\n", SessionID.c_str()));      dmsg(2,("LSCPServer: UnsubscribeNotification(Event=%s)\n", LSCPEvent::Name(type).c_str()));
1396      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result;
1397        SubscriptionMutex.Lock();
1398        eventSubscriptions[type].remove(currentSocket);
1399        SubscriptionMutex.Unlock();
1400        return result.Produce();
1401    }
1402    
1403    static int select_callback(void * lscpResultSet, int argc,
1404                            char **argv, char **azColName)
1405    {
1406        LSCPResultSet* resultSet = (LSCPResultSet*) lscpResultSet;
1407        resultSet->Add(argc, argv);
1408        return 0;
1409    }
1410    
1411    String LSCPServer::QueryDatabase(String query) {
1412        LSCPResultSet result;
1413    #if HAVE_SQLITE3
1414        char* zErrMsg = NULL;
1415        sqlite3 *db;
1416        String selectStr = "SELECT " + query;
1417    
1418        int rc = sqlite3_open("linuxsampler.db", &db);
1419        if (rc == SQLITE_OK)
1420        {
1421                rc = sqlite3_exec(db, selectStr.c_str(), select_callback, &result, &zErrMsg);
1422        }
1423        if ( rc != SQLITE_OK )
1424        {
1425                result.Error(String(zErrMsg), rc);
1426        }
1427        sqlite3_close(db);
1428    #else
1429        result.Error(String("SQLITE3 was not installed when linuxsampler was built. SELECT statement is not available."), 0);
1430    #endif
1431        return result.Produce();
1432    }
1433    
1434    /**
1435     * Will be called by the parser to enable or disable echo mode; if echo
1436     * mode is enabled, all commands from the client will (immediately) be
1437     * echoed back to the client.
1438     */
1439    String LSCPServer::SetEcho(yyparse_param_t* pSession, double boolean_value) {
1440        dmsg(2,("LSCPServer: SetEcho(val=%f)\n", boolean_value));
1441        LSCPResultSet result;
1442        try {
1443            if      (boolean_value == 0) pSession->bVerbose = false;
1444            else if (boolean_value == 1) pSession->bVerbose = true;
1445            else throw LinuxSamplerException("Not a boolean value, must either be 0 or 1");
1446        }
1447        catch (LinuxSamplerException e) {
1448             result.Error(e);
1449        }
1450        return result.Produce();
1451  }  }
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