/[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 411 by schoenebeck, Sat Feb 26 02:01:14 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    }
72    
73    /**
74     * Blocks the calling thread until the LSCP Server is initialized and
75     * accepting socket connections, if the server is already initialized then
76     * this method will return immediately.
77     * @param TimeoutSeconds     - optional: max. wait time in seconds
78     *                             (default: 0s)
79     * @param TimeoutNanoSeconds - optional: max wait time in nano seconds
80     *                             (default: 0ns)
81     * @returns  0 on success, a value less than 0 if timeout exceeded
82     */
83    int LSCPServer::WaitUntilInitialized(long TimeoutSeconds, long TimeoutNanoSeconds) {
84        return Initialized.WaitAndUnlockIf(false, TimeoutSeconds, TimeoutNanoSeconds);
85  }  }
86    
87  int LSCPServer::Main() {  int LSCPServer::Main() {
88      hSocket = socket(AF_INET, SOCK_STREAM, 0);      int hSocket = socket(AF_INET, SOCK_STREAM, 0);
89      if (hSocket < 0) {      if (hSocket < 0) {
90          std::cerr << "LSCPServer: Could not create server socket." << std::endl;          std::cerr << "LSCPServer: Could not create server socket." << std::endl;
91          return -1;          //return -1;
92            exit(EXIT_FAILURE);
93      }      }
94    
95      SocketAddress.sin_family      = AF_INET;      SocketAddress.sin_family      = AF_INET;
# Line 38  int LSCPServer::Main() { Line 97  int LSCPServer::Main() {
97      SocketAddress.sin_addr.s_addr = htonl(INADDR_ANY);      SocketAddress.sin_addr.s_addr = htonl(INADDR_ANY);
98    
99      if (bind(hSocket, (sockaddr*) &SocketAddress, sizeof(sockaddr_in)) < 0) {      if (bind(hSocket, (sockaddr*) &SocketAddress, sizeof(sockaddr_in)) < 0) {
100          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...";
101          close(hSocket);          for (int trial = 0; true; trial++) { // retry for LSCP_SERVER_BIND_TIMEOUT seconds
102          return -1;              if (bind(hSocket, (sockaddr*) &SocketAddress, sizeof(sockaddr_in)) < 0) {
103                    if (trial > LSCP_SERVER_BIND_TIMEOUT) {
104                        std::cerr << "gave up!" << std::endl;
105                        close(hSocket);
106                        //return -1;
107                        exit(EXIT_FAILURE);
108                    }
109                    else sleep(1); // sleep 1s
110                }
111                else break; // success
112            }
113      }      }
114    
115      listen(hSocket, 1);      listen(hSocket, 1);
116      dmsg(1,("LSCPServer: Server running.\n")); // server running      Initialized.Set(true);
117    
118      // now wait for client connections and handle their requests      // now wait for client connections and handle their requests
119      sockaddr_in client;      sockaddr_in client;
120      int length = sizeof(client);      int length = sizeof(client);
121      while (true) {      FD_ZERO(&fdSet);
122          hSession = accept(hSocket, (sockaddr*) &client, (socklen_t*) &length);      FD_SET(hSocket, &fdSet);
123          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);  
124    
125          close(hSession);      while (true) {
126          dmsg(1,("LSCPServer: Client connection terminated.\n"));          fd_set selectSet = fdSet;
127            int retval = select(maxSessions+1, &selectSet, NULL, NULL, NULL);
128            if (retval == 0)
129                    continue; //Nothing try again
130            if (retval == -1) {
131                    std::cerr << "LSCPServer: Socket select error." << std::endl;
132                    close(hSocket);
133                    exit(EXIT_FAILURE);
134            }
135    
136            //Accept new connections now (if any)
137            if (FD_ISSET(hSocket, &selectSet)) {
138                    int socket = accept(hSocket, (sockaddr*) &client, (socklen_t*) &length);
139                    if (socket < 0) {
140                            std::cerr << "LSCPServer: Client connection failed." << std::endl;
141                            exit(EXIT_FAILURE);
142                    }
143    
144                    if (fcntl(socket, F_SETFL, O_NONBLOCK)) {
145                            std::cerr << "LSCPServer: F_SETFL O_NONBLOCK failed." << std::endl;
146                            exit(EXIT_FAILURE);
147                    }
148    
149                    // Parser initialization
150                    yyparse_param_t yyparse_param;
151                    yyparse_param.pServer  = this;
152                    yyparse_param.hSession = socket;
153    
154                    Sessions.push_back(yyparse_param);
155                    FD_SET(socket, &fdSet);
156                    if (socket > maxSessions)
157                            maxSessions = socket;
158                    dmsg(1,("LSCPServer: Client connection established on socket:%d.\n", socket));
159                    LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_misc, "Client connection established on socket", socket));
160                    continue; //Maybe this was the only selected socket, better select again
161            }
162    
163            //Something was selected and it was not the hSocket, so it must be some command(s) coming.
164            for (std::vector<yyparse_param_t>::iterator iter = Sessions.begin(); iter != Sessions.end(); iter++) {
165                    if (FD_ISSET((*iter).hSession, &selectSet)) {   //Was it this socket?
166                            if (GetLSCPCommand(iter)) {     //Have we read the entire command?
167                                    dmsg(3,("LSCPServer: Got command on socket %d, calling parser.\n", currentSocket));
168                                    int dummy; // just a temporary hack to fulfill the restart() function prototype
169                                    restart(NULL, dummy); // restart the 'scanner'
170                                    currentSocket = (*iter).hSession;  //a hack
171                                    if ((*iter).bVerbose) { // if echo mode enabled
172                                        AnswerClient(bufferedCommands[currentSocket]);
173                                    }
174                                    int result = yyparse(&(*iter));
175                                    currentSocket = -1;     //continuation of a hack
176                                    dmsg(3,("LSCPServer: Done parsing on socket %d.\n", currentSocket));
177                                    if (result == LSCP_QUIT) { //Was it a quit command by any chance?
178                                            CloseConnection(iter);
179                                    }
180                            }
181                            //socket may have been closed, iter may be invalid, get out of the loop for now.
182                            //we'll be back if there is data.
183                            break;
184                    }
185            }
186    
187            //Now let's deliver late notifies (if any)
188            NotifyBufferMutex.Lock();
189            for (std::map<int,String>::iterator iterNotify = bufferedNotifies.begin(); iterNotify != bufferedNotifies.end(); iterNotify++) {
190                    send(iterNotify->first, iterNotify->second.c_str(), iterNotify->second.size(), 0);
191                    bufferedNotifies.erase(iterNotify);
192            }
193            NotifyBufferMutex.Unlock();
194      }      }
195  }  }
196    
197    void LSCPServer::CloseConnection( std::vector<yyparse_param_t>::iterator iter ) {
198            int socket = (*iter).hSession;
199            dmsg(1,("LSCPServer: Client connection terminated on socket:%d.\n",socket));
200            LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_misc, "Client connection terminated on socket", socket));
201            Sessions.erase(iter);
202            FD_CLR(socket,  &fdSet);
203            SubscriptionMutex.Lock(); //Must unsubscribe this socket from all events (if any)
204            for (std::map< LSCPEvent::event_t, std::list<int> >::iterator iter = eventSubscriptions.begin(); iter != eventSubscriptions.end(); iter++) {
205                    iter->second.remove(socket);
206            }
207            SubscriptionMutex.Unlock();
208            NotifyMutex.Lock();
209            bufferedCommands.erase(socket);
210            bufferedNotifies.erase(socket);
211            close(socket);
212            NotifyMutex.Unlock();
213    }
214    
215    int LSCPServer::EventSubscribers( std::list<LSCPEvent::event_t> events ) {
216            int subs = 0;
217            SubscriptionMutex.Lock();
218            for( std::list<LSCPEvent::event_t>::iterator iter = events.begin();
219                            iter != events.end(); iter++)
220            {
221                    subs += eventSubscriptions.count(*iter);
222            }
223            SubscriptionMutex.Unlock();
224            return subs;
225    }
226    
227    void LSCPServer::SendLSCPNotify( LSCPEvent event ) {
228            SubscriptionMutex.Lock();
229            if (eventSubscriptions.count(event.GetType()) == 0) {
230                    SubscriptionMutex.Unlock();     //Nobody is subscribed to this event
231                    return;
232            }
233            std::list<int>::iterator iter = eventSubscriptions[event.GetType()].begin();
234            std::list<int>::iterator end = eventSubscriptions[event.GetType()].end();
235            String notify = event.Produce();
236    
237            while (true) {
238                    if (NotifyMutex.Trylock()) {
239                            for(;iter != end; iter++)
240                                    send(*iter, notify.c_str(), notify.size(), 0);
241                            NotifyMutex.Unlock();
242                            break;
243                    } else {
244                            if (NotifyBufferMutex.Trylock()) {
245                                    for(;iter != end; iter++)
246                                            bufferedNotifies[*iter] += notify;
247                                    NotifyBufferMutex.Unlock();
248                                    break;
249                            }
250                    }
251            }
252            SubscriptionMutex.Unlock();
253    }
254    
255    extern int GetLSCPCommand( void *buf, int max_size ) {
256            String command = LSCPServer::bufferedCommands[LSCPServer::currentSocket];
257            if (command.size() == 0) {              //Parser wants input but we have nothing.
258                    strcpy((char*) buf, "\n");      //So give it an empty command
259                    return 1;                       //to keep it happy.
260            }
261    
262            if (max_size < command.size()) {
263                    std::cerr << "getLSCPCommand: Flex buffer too small, ignoring the command." << std::endl;
264                    return 0;       //This will never happen
265            }
266    
267            strcpy((char*) buf, command.c_str());
268            LSCPServer::bufferedCommands.erase(LSCPServer::currentSocket);
269            return command.size();
270    }
271    
272    /**
273     * Will be called to try to read the command from the socket
274     * If command is read, it will return true. Otherwise false is returned.
275     * In any case the received portion (complete or incomplete) is saved into bufferedCommand map.
276     */
277    bool LSCPServer::GetLSCPCommand( std::vector<yyparse_param_t>::iterator iter ) {
278            int socket = (*iter).hSession;
279            char c;
280            int i = 0;
281            while (true) {
282                    int result = recv(socket, (void *)&c, 1, 0); //Read one character at a time for now
283                    if (result == 0) { //socket was selected, so 0 here means client has closed the connection
284                            CloseConnection(iter);
285                            break;
286                    }
287                    if (result == 1) {
288                            if (c == '\r')
289                                    continue; //Ignore CR
290                            if (c == '\n') {
291                                    LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_misc, "Received \'" + bufferedCommands[socket] + "\' on socket", socket));
292                                    bufferedCommands[socket] += "\n";
293                                    return true; //Complete command was read
294                            }
295                            bufferedCommands[socket] += c;
296                    }
297                    if (result == -1) {
298                            if (errno == EAGAIN) //Would block, try again later.
299                                    return false;
300                            switch(errno) {
301                                    case EBADF:
302                                            dmsg(2,("LSCPScanner: The argument s is an invalid descriptor.\n"));
303                                            break;
304                                    case ECONNREFUSED:
305                                            dmsg(2,("LSCPScanner: A remote host refused to allow the network connection (typically because it is not running the requested service).\n"));
306                                            break;
307                                    case ENOTCONN:
308                                            dmsg(2,("LSCPScanner: The socket is associated with a connection-oriented protocol and has not been connected (see connect(2) and accept(2)).\n"));
309                                            break;
310                                    case ENOTSOCK:
311                                            dmsg(2,("LSCPScanner: The argument s does not refer to a socket.\n"));
312                                            break;
313                                    case EAGAIN:
314                                            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"));
315                                            break;
316                                    case EINTR:
317                                            dmsg(2,("LSCPScanner: The receive was interrupted by delivery of a signal before any data were available.\n"));
318                                            break;
319                                    case EFAULT:
320                                            dmsg(2,("LSCPScanner: The receive buffer pointer(s) point outside the process's address space.\n"));
321                                            break;
322                                    case EINVAL:
323                                            dmsg(2,("LSCPScanner: Invalid argument passed.\n"));
324                                            break;
325                                    case ENOMEM:
326                                            dmsg(2,("LSCPScanner: Could not allocate memory for recvmsg.\n"));
327                                            break;
328                                    default:
329                                            dmsg(2,("LSCPScanner: Unknown recv() error.\n"));
330                                            break;
331                            }
332                            CloseConnection(iter);
333                            break;
334                    }
335            }
336            return false;
337    }
338    
339  /**  /**
340   * 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
341   * client / frontend.   * client / frontend.
# Line 80  int LSCPServer::Main() { Line 344  int LSCPServer::Main() {
344   */   */
345  void LSCPServer::AnswerClient(String ReturnMessage) {  void LSCPServer::AnswerClient(String ReturnMessage) {
346      dmsg(2,("LSCPServer::AnswerClient(ReturnMessage=%s)", ReturnMessage.c_str()));      dmsg(2,("LSCPServer::AnswerClient(ReturnMessage=%s)", ReturnMessage.c_str()));
347      send(hSession, ReturnMessage.c_str(), ReturnMessage.size(), 0);      if (currentSocket != -1) {
348                NotifyMutex.Lock();
349                send(currentSocket, ReturnMessage.c_str(), ReturnMessage.size(), 0);
350                NotifyMutex.Unlock();
351        }
352    }
353    
354    /**
355     * Find a created audio output device index.
356     */
357    int LSCPServer::GetAudioOutputDeviceIndex ( AudioOutputDevice *pDevice )
358    {
359        // Search for the created device to get its index
360        std::map<uint, AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
361        std::map<uint, AudioOutputDevice*>::iterator iter = devices.begin();
362        for (; iter != devices.end(); iter++) {
363            if (iter->second == pDevice)
364                return iter->first;
365        }
366        // Not found.
367        return -1;
368    }
369    
370    /**
371     * Find a created midi input device index.
372     */
373    int LSCPServer::GetMidiInputDeviceIndex ( MidiInputDevice *pDevice )
374    {
375        // Search for the created device to get its index
376        std::map<uint, MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
377        std::map<uint, MidiInputDevice*>::iterator iter = devices.begin();
378        for (; iter != devices.end(); iter++) {
379            if (iter->second == pDevice)
380                return iter->first;
381        }
382        // Not found.
383        return -1;
384    }
385    
386    String LSCPServer::CreateAudioOutputDevice(String Driver, std::map<String,String> Parameters) {
387        dmsg(2,("LSCPServer: CreateAudioOutputDevice(Driver=%s)\n", Driver.c_str()));
388        LSCPResultSet result;
389        try {
390            AudioOutputDevice* pDevice = pSampler->CreateAudioOutputDevice(Driver, Parameters);
391            // search for the created device to get its index
392            int index = GetAudioOutputDeviceIndex(pDevice);
393            if (index == -1) throw LinuxSamplerException("Internal error: could not find created audio output device.");
394            result = index; // success
395        }
396        catch (LinuxSamplerException e) {
397            result.Error(e);
398        }
399        return result.Produce();
400    }
401    
402    String LSCPServer::CreateMidiInputDevice(String Driver, std::map<String,String> Parameters) {
403        dmsg(2,("LSCPServer: CreateMidiInputDevice(Driver=%s)\n", Driver.c_str()));
404        LSCPResultSet result;
405        try {
406            MidiInputDevice* pDevice = pSampler->CreateMidiInputDevice(Driver, Parameters);
407            // search for the created device to get its index
408            int index = GetMidiInputDeviceIndex(pDevice);
409            if (index == -1) throw LinuxSamplerException("Internal error: could not find created midi input device.");
410            result = index; // success
411        }
412        catch (LinuxSamplerException e) {
413            result.Error(e);
414        }
415        return result.Produce();
416    }
417    
418    String LSCPServer::DestroyAudioOutputDevice(uint DeviceIndex) {
419        dmsg(2,("LSCPServer: DestroyAudioOutputDevice(DeviceIndex=%d)\n", DeviceIndex));
420        LSCPResultSet result;
421        try {
422            std::map<uint, AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
423            if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceIndex) + ".");
424            AudioOutputDevice* pDevice = devices[DeviceIndex];
425            pSampler->DestroyAudioOutputDevice(pDevice);
426        }
427        catch (LinuxSamplerException e) {
428            result.Error(e);
429        }
430        return result.Produce();
431    }
432    
433    String LSCPServer::DestroyMidiInputDevice(uint DeviceIndex) {
434        dmsg(2,("LSCPServer: DestroyMidiInputDevice(DeviceIndex=%d)\n", DeviceIndex));
435        LSCPResultSet result;
436        try {
437            std::map<uint, MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
438            if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceIndex) + ".");
439            MidiInputDevice* pDevice = devices[DeviceIndex];
440            pSampler->DestroyMidiInputDevice(pDevice);
441        }
442        catch (LinuxSamplerException e) {
443            result.Error(e);
444        }
445        return result.Produce();
446  }  }
447    
448  /**  /**
449   * Will be called by the parser to load an instrument.   * Will be called by the parser to load an instrument.
450   */   */
451  String LSCPServer::LoadInstrument(String Filename, uint Instrument, uint SamplerChannel) {  String LSCPServer::LoadInstrument(String Filename, uint uiInstrument, uint uiSamplerChannel, bool bBackground) {
452      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));
453      result_t res = pEngine->LoadInstrument(Filename.c_str(), Instrument);      LSCPResultSet result;
454      return ConvertResult(res);      try {
455            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
456            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
457            EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
458            if (!pEngineChannel) throw LinuxSamplerException("No engine type assigned to sampler channel yet");
459            if (!pSamplerChannel->GetAudioOutputDevice())
460                throw LinuxSamplerException("No audio output device connected to sampler channel");
461            if (bBackground) {
462                InstrumentLoader.StartNewLoad(Filename, uiInstrument, pEngineChannel);
463            }
464            else {
465                // tell the engine channel which instrument to load
466                pEngineChannel->PrepareLoadInstrument(Filename.c_str(), uiInstrument);
467                // actually start to load the instrument (blocks until completed)
468                pEngineChannel->LoadInstrument();
469            }
470        }
471        catch (LinuxSamplerException e) {
472             result.Error(e);
473        }
474        return result.Produce();
475  }  }
476    
477  /**  /**
478   * 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
479     * sampler channel.
480   */   */
481  String LSCPServer::LoadEngine(String EngineName, uint SamplerChannel) {  String LSCPServer::SetEngineType(String EngineName, uint uiSamplerChannel) {
482      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));
483      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result;
484        try {        
485            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
486            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
487            LockRTNotify();
488            pSamplerChannel->SetEngineType(EngineName);
489            UnlockRTNotify();
490        }
491        catch (LinuxSamplerException e) {
492             result.Error(e);
493        }
494        return result.Produce();
495  }  }
496    
497  /**  /**
# Line 105  String LSCPServer::LoadEngine(String Eng Line 499  String LSCPServer::LoadEngine(String Eng
499   */   */
500  String LSCPServer::GetChannels() {  String LSCPServer::GetChannels() {
501      dmsg(2,("LSCPServer: GetChannels()\n"));      dmsg(2,("LSCPServer: GetChannels()\n"));
502      return "1\r\n";      LSCPResultSet result;
503        result.Add(pSampler->SamplerChannels());
504        return result.Produce();
505    }
506    
507    /**
508     * Will be called by the parser to get the list of sampler channels.
509     */
510    String LSCPServer::ListChannels() {
511        dmsg(2,("LSCPServer: ListChannels()\n"));
512        String list;
513        std::map<uint,SamplerChannel*> channels = pSampler->GetSamplerChannels();
514        std::map<uint,SamplerChannel*>::iterator iter = channels.begin();
515        for (; iter != channels.end(); iter++) {
516            if (list != "") list += ",";
517            list += ToString(iter->first);
518        }
519        LSCPResultSet result;
520        result.Add(list);
521        return result.Produce();
522  }  }
523    
524  /**  /**
# Line 113  String LSCPServer::GetChannels() { Line 526  String LSCPServer::GetChannels() {
526   */   */
527  String LSCPServer::AddChannel() {  String LSCPServer::AddChannel() {
528      dmsg(2,("LSCPServer: AddChannel()\n"));      dmsg(2,("LSCPServer: AddChannel()\n"));
529      return "ERR:0:Not implemented yet.\r\n";      SamplerChannel* pSamplerChannel = pSampler->AddSamplerChannel();
530        LSCPResultSet result(pSamplerChannel->Index());
531        return result.Produce();
532  }  }
533    
534  /**  /**
535   * Will be called by the parser to remove a sampler channel.   * Will be called by the parser to remove a sampler channel.
536   */   */
537  String LSCPServer::RemoveChannel(uint SamplerChannel) {  String LSCPServer::RemoveChannel(uint uiSamplerChannel) {
538      dmsg(2,("LSCPServer: RemoveChannel(SamplerChannel=%d)\n", SamplerChannel));      dmsg(2,("LSCPServer: RemoveChannel(SamplerChannel=%d)\n", uiSamplerChannel));
539      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result;
540        LockRTNotify();
541        pSampler->RemoveSamplerChannel(uiSamplerChannel);
542        UnlockRTNotify();
543        return result.Produce();
544  }  }
545    
546  /**  /**
# Line 129  String LSCPServer::RemoveChannel(uint Sa Line 548  String LSCPServer::RemoveChannel(uint Sa
548   */   */
549  String LSCPServer::GetAvailableEngines() {  String LSCPServer::GetAvailableEngines() {
550      dmsg(2,("LSCPServer: GetAvailableEngines()\n"));      dmsg(2,("LSCPServer: GetAvailableEngines()\n"));
551      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result("GigEngine");
552        return result.Produce();
553  }  }
554    
555  /**  /**
556   * 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
557     * sampler engine.
558   */   */
559  String LSCPServer::GetEngineInfo(String EngineName) {  String LSCPServer::GetEngineInfo(String EngineName) {
560      dmsg(2,("LSCPServer: GetEngineInfo(EngineName=%s)\n", EngineName.c_str()));      dmsg(2,("LSCPServer: GetEngineInfo(EngineName=%s)\n", EngineName.c_str()));
561      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result;
562        try {
563            Engine* pEngine = EngineFactory::Create(EngineName);
564            result.Add("DESCRIPTION", pEngine->Description());
565            result.Add("VERSION",     pEngine->Version());
566            delete pEngine;
567        }
568        catch (LinuxSamplerException e) {
569             result.Error(e);
570        }
571        return result.Produce();
572  }  }
573    
574  /**  /**
575   * Will be called by the parser to get informations about a particular   * Will be called by the parser to get informations about a particular
576   * sampler channel.   * sampler channel.
577   */   */
578  String LSCPServer::GetChannelInfo(uint SamplerChannel) {  String LSCPServer::GetChannelInfo(uint uiSamplerChannel) {
579      dmsg(2,("LSCPServer: GetChannelInfo(SamplerChannel=%d)\n", SamplerChannel));      dmsg(2,("LSCPServer: GetChannelInfo(SamplerChannel=%d)\n", uiSamplerChannel));
580      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result;
581        try {
582            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
583            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
584            EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
585    
586            //Defaults values
587            String EngineName = "NONE";
588            float Volume = 0.0f;
589            String InstrumentFileName = "NONE";
590            String InstrumentName = "NONE";
591            int InstrumentIndex = -1;
592            int InstrumentStatus = -1;
593            int AudioOutputChannels = 0;
594            String AudioRouting;
595    
596            if (pEngineChannel) {                              
597                EngineName          = pEngineChannel->GetEngine()->EngineName();
598                AudioOutputChannels = pEngineChannel->Channels();
599                Volume              = pEngineChannel->Volume();
600                InstrumentStatus    = pEngineChannel->InstrumentStatus();
601                InstrumentIndex     = pEngineChannel->InstrumentIndex();
602                if (InstrumentIndex != -1) {
603                    InstrumentFileName = pEngineChannel->InstrumentFileName();
604                    InstrumentName     = pEngineChannel->InstrumentName();
605                }
606                for (int chan = 0; chan < pEngineChannel->Channels(); chan++) {
607                    if (AudioRouting != "") AudioRouting += ",";
608                    AudioRouting += ToString(pEngineChannel->OutputChannel(chan));
609                }
610            }
611    
612            result.Add("ENGINE_NAME", EngineName);
613            result.Add("VOLUME", Volume);
614    
615            //Some not-so-hardcoded stuff to make GUI look good
616            result.Add("AUDIO_OUTPUT_DEVICE", GetAudioOutputDeviceIndex(pSamplerChannel->GetAudioOutputDevice()));
617            result.Add("AUDIO_OUTPUT_CHANNELS", AudioOutputChannels);
618            result.Add("AUDIO_OUTPUT_ROUTING", AudioRouting);
619    
620            result.Add("MIDI_INPUT_DEVICE", GetMidiInputDeviceIndex(pSamplerChannel->GetMidiInputDevice()));
621            result.Add("MIDI_INPUT_PORT", pSamplerChannel->GetMidiInputPort());
622            if (pSamplerChannel->GetMidiInputChannel() == MidiInputPort::midi_chan_all) result.Add("MIDI_INPUT_CHANNEL", "ALL");
623            else result.Add("MIDI_INPUT_CHANNEL", pSamplerChannel->GetMidiInputChannel());
624    
625            result.Add("INSTRUMENT_FILE", InstrumentFileName);
626            result.Add("INSTRUMENT_NR", InstrumentIndex);
627            result.Add("INSTRUMENT_NAME", InstrumentName);
628            result.Add("INSTRUMENT_STATUS", InstrumentStatus);
629        }
630        catch (LinuxSamplerException e) {
631             result.Error(e);
632        }
633        return result.Produce();
634  }  }
635    
636  /**  /**
637   * 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
638   * particular sampler channel.   * particular sampler channel.
639   */   */
640  String LSCPServer::GetVoiceCount(uint SamplerChannel) {  String LSCPServer::GetVoiceCount(uint uiSamplerChannel) {
641      dmsg(2,("LSCPServer: GetVoiceCount(SamplerChannel=%d)\n", SamplerChannel));      dmsg(2,("LSCPServer: GetVoiceCount(SamplerChannel=%d)\n", uiSamplerChannel));
642      return ToString(pEngine->ActiveVoiceCount) + "\r\n";      LSCPResultSet result;
643        try {
644            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
645            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
646            EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
647            if (!pEngineChannel) throw LinuxSamplerException("No engine loaded on sampler channel");
648            result.Add(pEngineChannel->GetEngine()->VoiceCount());
649        }
650        catch (LinuxSamplerException e) {
651             result.Error(e);
652        }
653        return result.Produce();
654  }  }
655    
656  /**  /**
657   * 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
658   * particular sampler channel.   * particular sampler channel.
659   */   */
660  String LSCPServer::GetStreamCount(uint SamplerChannel) {  String LSCPServer::GetStreamCount(uint uiSamplerChannel) {
661      dmsg(2,("LSCPServer: GetStreamCount(SamplerChannel=%d)\n", SamplerChannel));      dmsg(2,("LSCPServer: GetStreamCount(SamplerChannel=%d)\n", uiSamplerChannel));
662      return ToString(pEngine->pDiskThread->ActiveStreamCount) + "\r\n";      LSCPResultSet result;
663        try {
664            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
665            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
666            EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
667            if (!pEngineChannel) throw LinuxSamplerException("No engine type assigned to sampler channel");
668            result.Add(pEngineChannel->GetEngine()->DiskStreamCount());
669        }
670        catch (LinuxSamplerException e) {
671             result.Error(e);
672        }
673        return result.Produce();
674  }  }
675    
676  /**  /**
677   * 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
678   * streams on a particular sampler channel.   * streams on a particular sampler channel.
679   */   */
680  String LSCPServer::GetBufferFill(fill_response_t ResponseType, uint SamplerChannel) {  String LSCPServer::GetBufferFill(fill_response_t ResponseType, uint uiSamplerChannel) {
681      dmsg(2,("LSCPServer: GetBufferFill(ResponseType=%d, SamplerChannel=%d)\n", ResponseType, SamplerChannel));      dmsg(2,("LSCPServer: GetBufferFill(ResponseType=%d, SamplerChannel=%d)\n", ResponseType, uiSamplerChannel));
682      return (ResponseType == fill_response_bytes) ? pEngine->pDiskThread->GetBufferFillBytes() + "\r\n"      LSCPResultSet result;
683                                                   : pEngine->pDiskThread->GetBufferFillPercentage() + "\r\n";      try {
684            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
685            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
686            EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
687            if (!pEngineChannel) throw LinuxSamplerException("No engine type assigned to sampler channel");
688            if (!pEngineChannel->GetEngine()->DiskStreamSupported()) result.Add("NA");
689            else {
690                switch (ResponseType) {
691                    case fill_response_bytes:
692                        result.Add(pEngineChannel->GetEngine()->DiskStreamBufferFillBytes());
693                        break;
694                    case fill_response_percentage:
695                        result.Add(pEngineChannel->GetEngine()->DiskStreamBufferFillPercentage());
696                        break;
697                    default:
698                        throw LinuxSamplerException("Unknown fill response type");
699                }
700            }
701        }
702        catch (LinuxSamplerException e) {
703             result.Error(e);
704        }
705        return result.Produce();
706  }  }
707    
708  /**  String LSCPServer::GetAvailableAudioOutputDrivers() {
709   * Will be called by the parser to change the audio output type on a      dmsg(2,("LSCPServer: GetAvailableAudioOutputDrivers()\n"));
710   * particular sampler channel.      LSCPResultSet result;
711   */      try {
712  String LSCPServer::SetAudioOutputType(audio_output_type_t AudioOutputType, uint SamplerChannel) {          String s = AudioOutputDeviceFactory::AvailableDriversAsString();
713      dmsg(2,("LSCPServer: SetAudioOutputType(AudioOutputType=%d, SamplerChannel=%d)\n", AudioOutputType, SamplerChannel));          result.Add(s);
714      return "ERR:0:Not implemented yet.\r\n";      }
715        catch (LinuxSamplerException e) {
716            result.Error(e);
717        }
718        return result.Produce();
719    }
720    
721    String LSCPServer::GetAvailableMidiInputDrivers() {
722        dmsg(2,("LSCPServer: GetAvailableMidiInputDrivers()\n"));
723        LSCPResultSet result;
724        try {
725            String s = MidiInputDeviceFactory::AvailableDriversAsString();
726            result.Add(s);
727        }
728        catch (LinuxSamplerException e) {
729            result.Error(e);
730        }
731        return result.Produce();
732    }
733    
734    String LSCPServer::GetMidiInputDriverInfo(String Driver) {
735        dmsg(2,("LSCPServer: GetMidiInputDriverInfo(Driver=%s)\n",Driver.c_str()));
736        LSCPResultSet result;
737        try {
738            result.Add("DESCRIPTION", MidiInputDeviceFactory::GetDriverDescription(Driver));
739            result.Add("VERSION",     MidiInputDeviceFactory::GetDriverVersion(Driver));
740    
741            std::map<String,DeviceCreationParameter*> parameters = MidiInputDeviceFactory::GetAvailableDriverParameters(Driver);
742            if (parameters.size()) { // if there are parameters defined for this driver
743                String s;
744                std::map<String,DeviceCreationParameter*>::iterator iter = parameters.begin();
745                for (;iter != parameters.end(); iter++) {
746                    if (s != "") s += ",";
747                    s += iter->first;
748                }
749                result.Add("PARAMETERS", s);
750            }
751        }
752        catch (LinuxSamplerException e) {
753            result.Error(e);
754        }
755        return result.Produce();
756    }
757    
758    String LSCPServer::GetAudioOutputDriverInfo(String Driver) {
759        dmsg(2,("LSCPServer: GetAudioOutputDriverInfo(Driver=%s)\n",Driver.c_str()));
760        LSCPResultSet result;
761        try {
762            result.Add("DESCRIPTION", AudioOutputDeviceFactory::GetDriverDescription(Driver));
763            result.Add("VERSION",     AudioOutputDeviceFactory::GetDriverVersion(Driver));
764    
765            std::map<String,DeviceCreationParameter*> parameters = AudioOutputDeviceFactory::GetAvailableDriverParameters(Driver);
766            if (parameters.size()) { // if there are parameters defined for this driver
767                String s;
768                std::map<String,DeviceCreationParameter*>::iterator iter = parameters.begin();
769                for (;iter != parameters.end(); iter++) {
770                    if (s != "") s += ",";
771                    s += iter->first;
772                }
773                result.Add("PARAMETERS", s);
774            }
775        }
776        catch (LinuxSamplerException e) {
777            result.Error(e);
778        }
779        return result.Produce();
780    }
781    
782    String LSCPServer::GetMidiInputDriverParameterInfo(String Driver, String Parameter, std::map<String,String> DependencyList) {
783        dmsg(2,("LSCPServer: GetMidiInputDriverParameterInfo(Driver=%s,Parameter=%s,DependencyListSize=%d)\n",Driver.c_str(),Parameter.c_str(),DependencyList.size()));
784        LSCPResultSet result;
785        try {
786            DeviceCreationParameter* pParameter = MidiInputDeviceFactory::GetDriverParameter(Driver, Parameter);
787            result.Add("TYPE",         pParameter->Type());
788            result.Add("DESCRIPTION",  pParameter->Description());
789            result.Add("MANDATORY",    pParameter->Mandatory());
790            result.Add("FIX",          pParameter->Fix());
791            result.Add("MULTIPLICITY", pParameter->Multiplicity());
792            optional<String> oDepends       = pParameter->Depends();
793            optional<String> oDefault       = pParameter->Default(DependencyList);
794            optional<String> oRangeMin      = pParameter->RangeMin(DependencyList);
795            optional<String> oRangeMax      = pParameter->RangeMax(DependencyList);
796            optional<String> oPossibilities = pParameter->Possibilities(DependencyList);
797            if (oDepends)       result.Add("DEPENDS",       *oDepends);
798            if (oDefault)       result.Add("DEFAULT",       *oDefault);
799            if (oRangeMin)      result.Add("RANGE_MIN",     *oRangeMin);
800            if (oRangeMax)      result.Add("RANGE_MAX",     *oRangeMax);
801            if (oPossibilities) result.Add("POSSIBILITIES", *oPossibilities);
802        }
803        catch (LinuxSamplerException e) {
804            result.Error(e);
805        }
806        return result.Produce();
807    }
808    
809    String LSCPServer::GetAudioOutputDriverParameterInfo(String Driver, String Parameter, std::map<String,String> DependencyList) {
810        dmsg(2,("LSCPServer: GetAudioOutputDriverParameterInfo(Driver=%s,Parameter=%s,DependencyListSize=%d)\n",Driver.c_str(),Parameter.c_str(),DependencyList.size()));
811        LSCPResultSet result;
812        try {
813            DeviceCreationParameter* pParameter = AudioOutputDeviceFactory::GetDriverParameter(Driver, Parameter);
814            result.Add("TYPE",         pParameter->Type());
815            result.Add("DESCRIPTION",  pParameter->Description());
816            result.Add("MANDATORY",    pParameter->Mandatory());
817            result.Add("FIX",          pParameter->Fix());
818            result.Add("MULTIPLICITY", pParameter->Multiplicity());
819            optional<String> oDepends       = pParameter->Depends();
820            optional<String> oDefault       = pParameter->Default(DependencyList);
821            optional<String> oRangeMin      = pParameter->RangeMin(DependencyList);
822            optional<String> oRangeMax      = pParameter->RangeMax(DependencyList);
823            optional<String> oPossibilities = pParameter->Possibilities(DependencyList);
824            if (oDepends)       result.Add("DEPENDS",       *oDepends);
825            if (oDefault)       result.Add("DEFAULT",       *oDefault);
826            if (oRangeMin)      result.Add("RANGE_MIN",     *oRangeMin);
827            if (oRangeMax)      result.Add("RANGE_MAX",     *oRangeMax);
828            if (oPossibilities) result.Add("POSSIBILITIES", *oPossibilities);
829        }
830        catch (LinuxSamplerException e) {
831            result.Error(e);
832        }
833        return result.Produce();
834    }
835    
836    String LSCPServer::GetAudioOutputDeviceCount() {
837        dmsg(2,("LSCPServer: GetAudioOutputDeviceCount()\n"));
838        LSCPResultSet result;
839        try {
840            uint count = pSampler->AudioOutputDevices();
841            result.Add(count); // success
842        }
843        catch (LinuxSamplerException e) {
844            result.Error(e);
845        }
846        return result.Produce();
847    }
848    
849    String LSCPServer::GetMidiInputDeviceCount() {
850        dmsg(2,("LSCPServer: GetMidiInputDeviceCount()\n"));
851        LSCPResultSet result;
852        try {
853            uint count = pSampler->MidiInputDevices();
854            result.Add(count); // success
855        }
856        catch (LinuxSamplerException e) {
857            result.Error(e);
858        }
859        return result.Produce();
860    }
861    
862    String LSCPServer::GetAudioOutputDevices() {
863        dmsg(2,("LSCPServer: GetAudioOutputDevices()\n"));
864        LSCPResultSet result;
865        try {
866            String s;
867            std::map<uint, AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
868            std::map<uint, AudioOutputDevice*>::iterator iter = devices.begin();
869            for (; iter != devices.end(); iter++) {
870                if (s != "") s += ",";
871                s += ToString(iter->first);
872            }
873            result.Add(s);
874        }
875        catch (LinuxSamplerException e) {
876            result.Error(e);
877        }
878        return result.Produce();
879    }
880    
881    String LSCPServer::GetMidiInputDevices() {
882        dmsg(2,("LSCPServer: GetMidiInputDevices()\n"));
883        LSCPResultSet result;
884        try {
885            String s;
886            std::map<uint, MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
887            std::map<uint, MidiInputDevice*>::iterator iter = devices.begin();
888            for (; iter != devices.end(); iter++) {
889                if (s != "") s += ",";
890                s += ToString(iter->first);
891            }
892            result.Add(s);
893        }
894        catch (LinuxSamplerException e) {
895            result.Error(e);
896        }
897        return result.Produce();
898    }
899    
900    String LSCPServer::GetAudioOutputDeviceInfo(uint DeviceIndex) {
901        dmsg(2,("LSCPServer: GetAudioOutputDeviceInfo(DeviceIndex=%d)\n",DeviceIndex));
902        LSCPResultSet result;
903        try {
904            std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
905            if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceIndex) + ".");
906            AudioOutputDevice* pDevice = devices[DeviceIndex];
907            result.Add("DRIVER", pDevice->Driver());
908            std::map<String,DeviceCreationParameter*> parameters = pDevice->DeviceParameters();
909            std::map<String,DeviceCreationParameter*>::iterator iter = parameters.begin();
910            for (; iter != parameters.end(); iter++) {
911                result.Add(iter->first, iter->second->Value());
912            }
913        }
914        catch (LinuxSamplerException e) {
915            result.Error(e);
916        }
917        return result.Produce();
918    }
919    
920    String LSCPServer::GetMidiInputDeviceInfo(uint DeviceIndex) {
921        dmsg(2,("LSCPServer: GetMidiInputDeviceInfo(DeviceIndex=%d)\n",DeviceIndex));
922        LSCPResultSet result;
923        try {
924            std::map<uint,MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
925            if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(DeviceIndex) + ".");
926            MidiInputDevice* pDevice = devices[DeviceIndex];
927            result.Add("DRIVER", pDevice->Driver());
928            std::map<String,DeviceCreationParameter*> parameters = pDevice->DeviceParameters();
929            std::map<String,DeviceCreationParameter*>::iterator iter = parameters.begin();
930            for (; iter != parameters.end(); iter++) {
931                result.Add(iter->first, iter->second->Value());
932            }
933        }
934        catch (LinuxSamplerException e) {
935            result.Error(e);
936        }
937        return result.Produce();
938    }
939    String LSCPServer::GetMidiInputPortInfo(uint DeviceIndex, uint PortIndex) {
940        dmsg(2,("LSCPServer: GetMidiInputPortInfo(DeviceIndex=%d, PortIndex=%d)\n",DeviceIndex, PortIndex));
941        LSCPResultSet result;
942        try {
943            // get MIDI input device
944            std::map<uint,MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
945            if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(DeviceIndex) + ".");
946            MidiInputDevice* pDevice = devices[DeviceIndex];
947    
948            // get MIDI port
949            MidiInputPort* pMidiInputPort = pDevice->GetPort(PortIndex);
950            if (!pMidiInputPort) throw LinuxSamplerException("There is no MIDI input port with index " + ToString(PortIndex) + ".");
951    
952            // return the values of all MIDI port parameters
953            std::map<String,DeviceRuntimeParameter*> parameters = pMidiInputPort->PortParameters();
954            std::map<String,DeviceRuntimeParameter*>::iterator iter = parameters.begin();
955            for (; iter != parameters.end(); iter++) {
956                result.Add(iter->first, iter->second->Value());
957            }
958        }
959        catch (LinuxSamplerException e) {
960            result.Error(e);
961        }
962        return result.Produce();
963    }
964    
965    String LSCPServer::GetAudioOutputChannelInfo(uint DeviceId, uint ChannelId) {
966        dmsg(2,("LSCPServer: GetAudioOutputChannelInfo(DeviceId=%d,ChannelId)\n",DeviceId,ChannelId));
967        LSCPResultSet result;
968        try {
969            // get audio output device
970            std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
971            if (!devices.count(DeviceId)) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceId) + ".");
972            AudioOutputDevice* pDevice = devices[DeviceId];
973    
974            // get audio channel
975            AudioChannel* pChannel = pDevice->Channel(ChannelId);
976            if (!pChannel) throw LinuxSamplerException("Audio output device does not have audio channel " + ToString(ChannelId) + ".");
977    
978            // return the values of all audio channel parameters
979            std::map<String,DeviceRuntimeParameter*> parameters = pChannel->ChannelParameters();
980            std::map<String,DeviceRuntimeParameter*>::iterator iter = parameters.begin();
981            for (; iter != parameters.end(); iter++) {
982                result.Add(iter->first, iter->second->Value());
983            }
984        }
985        catch (LinuxSamplerException e) {
986            result.Error(e);
987        }
988        return result.Produce();
989    }
990    
991    String LSCPServer::GetMidiInputPortParameterInfo(uint DeviceId, uint PortId, String ParameterName) {
992        dmsg(2,("LSCPServer: GetMidiInputPortParameterInfo(DeviceId=%d,PortId=%d,ParameterName=%s)\n",DeviceId,PortId,ParameterName.c_str()));
993        LSCPResultSet result;
994        try {
995            // get MIDI input device
996            std::map<uint,MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
997            if (!devices.count(DeviceId)) throw LinuxSamplerException("There is no midi input device with index " + ToString(DeviceId) + ".");
998            MidiInputDevice* pDevice = devices[DeviceId];
999    
1000            // get midi port
1001            MidiInputPort* pPort = pDevice->GetPort(PortId);
1002            if (!pPort) throw LinuxSamplerException("Midi input device does not have port " + ToString(PortId) + ".");
1003    
1004            // get desired port parameter
1005            std::map<String,DeviceRuntimeParameter*> parameters = pPort->PortParameters();
1006            if (!parameters.count(ParameterName)) throw LinuxSamplerException("Midi port does not provide a parameter '" + ParameterName + "'.");
1007            DeviceRuntimeParameter* pParameter = parameters[ParameterName];
1008    
1009            // return all fields of this audio channel parameter
1010            result.Add("TYPE",         pParameter->Type());
1011            result.Add("DESCRIPTION",  pParameter->Description());
1012            result.Add("FIX",          pParameter->Fix());
1013            result.Add("MULTIPLICITY", pParameter->Multiplicity());
1014            if (pParameter->RangeMin())      result.Add("RANGE_MIN",     *pParameter->RangeMin());
1015            if (pParameter->RangeMax())      result.Add("RANGE_MAX",     *pParameter->RangeMax());
1016            if (pParameter->Possibilities()) result.Add("POSSIBILITIES", *pParameter->Possibilities());
1017        }
1018        catch (LinuxSamplerException e) {
1019            result.Error(e);
1020        }
1021        return result.Produce();
1022    }
1023    
1024    String LSCPServer::GetAudioOutputChannelParameterInfo(uint DeviceId, uint ChannelId, String ParameterName) {
1025        dmsg(2,("LSCPServer: GetAudioOutputChannelParameterInfo(DeviceId=%d,ChannelId=%d,ParameterName=%s)\n",DeviceId,ChannelId,ParameterName.c_str()));
1026        LSCPResultSet result;
1027        try {
1028            // get audio output device
1029            std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
1030            if (!devices.count(DeviceId)) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceId) + ".");
1031            AudioOutputDevice* pDevice = devices[DeviceId];
1032    
1033            // get audio channel
1034            AudioChannel* pChannel = pDevice->Channel(ChannelId);
1035            if (!pChannel) throw LinuxSamplerException("Audio output device does not have audio channel " + ToString(ChannelId) + ".");
1036    
1037            // get desired audio channel parameter
1038            std::map<String,DeviceRuntimeParameter*> parameters = pChannel->ChannelParameters();
1039            if (!parameters.count(ParameterName)) throw LinuxSamplerException("Audio channel does not provide a parameter '" + ParameterName + "'.");
1040            DeviceRuntimeParameter* pParameter = parameters[ParameterName];
1041    
1042            // return all fields of this audio channel parameter
1043            result.Add("TYPE",         pParameter->Type());
1044            result.Add("DESCRIPTION",  pParameter->Description());
1045            result.Add("FIX",          pParameter->Fix());
1046            result.Add("MULTIPLICITY", pParameter->Multiplicity());
1047            if (pParameter->RangeMin())      result.Add("RANGE_MIN",     *pParameter->RangeMin());
1048            if (pParameter->RangeMax())      result.Add("RANGE_MAX",     *pParameter->RangeMax());
1049            if (pParameter->Possibilities()) result.Add("POSSIBILITIES", *pParameter->Possibilities());
1050        }
1051        catch (LinuxSamplerException e) {
1052            result.Error(e);
1053        }
1054        return result.Produce();
1055    }
1056    
1057    String LSCPServer::SetAudioOutputChannelParameter(uint DeviceId, uint ChannelId, String ParamKey, String ParamVal) {
1058        dmsg(2,("LSCPServer: SetAudioOutputChannelParameter(DeviceId=%d,ChannelId=%d,ParamKey=%s,ParamVal=%s)\n",DeviceId,ChannelId,ParamKey.c_str(),ParamVal.c_str()));
1059        LSCPResultSet result;
1060        try {
1061            // get audio output device
1062            std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
1063            if (!devices.count(DeviceId)) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceId) + ".");
1064            AudioOutputDevice* pDevice = devices[DeviceId];
1065    
1066            // get audio channel
1067            AudioChannel* pChannel = pDevice->Channel(ChannelId);
1068            if (!pChannel) throw LinuxSamplerException("Audio output device does not have audio channel " + ToString(ChannelId) + ".");
1069    
1070            // get desired audio channel parameter
1071            std::map<String,DeviceRuntimeParameter*> parameters = pChannel->ChannelParameters();
1072            if (!parameters.count(ParamKey)) throw LinuxSamplerException("Audio channel does not provide a parameter '" + ParamKey + "'.");
1073            DeviceRuntimeParameter* pParameter = parameters[ParamKey];
1074    
1075            // set new channel parameter value
1076            pParameter->SetValue(ParamVal);
1077        }
1078        catch (LinuxSamplerException e) {
1079            result.Error(e);
1080        }
1081        return result.Produce();
1082    }
1083    
1084    String LSCPServer::SetAudioOutputDeviceParameter(uint DeviceIndex, String ParamKey, String ParamVal) {
1085        dmsg(2,("LSCPServer: SetAudioOutputDeviceParameter(DeviceIndex=%d,ParamKey=%s,ParamVal=%s)\n",DeviceIndex,ParamKey.c_str(),ParamVal.c_str()));
1086        LSCPResultSet result;
1087        try {
1088            std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
1089            if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceIndex) + ".");
1090            AudioOutputDevice* pDevice = devices[DeviceIndex];
1091            std::map<String,DeviceCreationParameter*> parameters = pDevice->DeviceParameters();
1092            if (!parameters.count(ParamKey)) throw LinuxSamplerException("Audio output device " + ToString(DeviceIndex) + " does not have a device parameter '" + ParamKey + "'");
1093            parameters[ParamKey]->SetValue(ParamVal);
1094        }
1095        catch (LinuxSamplerException e) {
1096            result.Error(e);
1097        }
1098        return result.Produce();
1099    }
1100    
1101    String LSCPServer::SetMidiInputDeviceParameter(uint DeviceIndex, String ParamKey, String ParamVal) {
1102        dmsg(2,("LSCPServer: SetMidiOutputDeviceParameter(DeviceIndex=%d,ParamKey=%s,ParamVal=%s)\n",DeviceIndex,ParamKey.c_str(),ParamVal.c_str()));
1103        LSCPResultSet result;
1104        try {
1105            std::map<uint,MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
1106            if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(DeviceIndex) + ".");
1107            MidiInputDevice* pDevice = devices[DeviceIndex];
1108            std::map<String,DeviceCreationParameter*> parameters = pDevice->DeviceParameters();
1109            if (!parameters.count(ParamKey)) throw LinuxSamplerException("MIDI input device " + ToString(DeviceIndex) + " does not have a device parameter '" + ParamKey + "'");
1110            parameters[ParamKey]->SetValue(ParamVal);
1111        }
1112        catch (LinuxSamplerException e) {
1113            result.Error(e);
1114        }
1115        return result.Produce();
1116    }
1117    
1118    String LSCPServer::SetMidiInputPortParameter(uint DeviceIndex, uint PortIndex, String ParamKey, String ParamVal) {
1119        dmsg(2,("LSCPServer: SetMidiOutputDeviceParameter(DeviceIndex=%d,ParamKey=%s,ParamVal=%s)\n",DeviceIndex,ParamKey.c_str(),ParamVal.c_str()));
1120        LSCPResultSet result;
1121        try {
1122            // get MIDI input device
1123            std::map<uint,MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
1124            if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(DeviceIndex) + ".");
1125            MidiInputDevice* pDevice = devices[DeviceIndex];
1126    
1127            // get MIDI port
1128            MidiInputPort* pMidiInputPort = pDevice->GetPort(PortIndex);
1129            if (!pMidiInputPort) throw LinuxSamplerException("There is no MIDI input port with index " + ToString(PortIndex) + ".");
1130    
1131            // set port parameter value
1132            std::map<String,DeviceRuntimeParameter*> parameters = pMidiInputPort->PortParameters();
1133            if (!parameters.count(ParamKey)) throw LinuxSamplerException("MIDI input device " + ToString(PortIndex) + " does not have a parameter '" + ParamKey + "'");
1134            parameters[ParamKey]->SetValue(ParamVal);
1135        }
1136        catch (LinuxSamplerException e) {
1137            result.Error(e);
1138        }
1139        return result.Produce();
1140  }  }
1141    
1142  /**  /**
1143   * 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
1144   * playback on a particular sampler channel.   * playback on a particular sampler channel.
1145   */   */
1146  String LSCPServer::SetAudioOutputChannel(uint AudioOutputChannel, uint SamplerChannel) {  String LSCPServer::SetAudioOutputChannel(uint ChannelAudioOutputChannel, uint AudioOutputDeviceInputChannel, uint uiSamplerChannel) {
1147      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));
1148      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result;
1149        try {
1150            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1151            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1152            EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
1153            if (!pEngineChannel) throw LinuxSamplerException("No engine type yet assigned to sampler channel " + ToString(uiSamplerChannel));
1154            if (!pSamplerChannel->GetAudioOutputDevice()) throw LinuxSamplerException("No audio output device connected to sampler channel " + ToString(uiSamplerChannel));
1155            pEngineChannel->SetOutputChannel(ChannelAudioOutputChannel, AudioOutputDeviceInputChannel);
1156        }
1157        catch (LinuxSamplerException e) {
1158             result.Error(e);
1159        }
1160        return result.Produce();
1161  }  }
1162    
1163  /**  String LSCPServer::SetAudioOutputDevice(uint AudioDeviceId, uint uiSamplerChannel) {
1164   * 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));
1165   * engine of a particular sampler channel should listen to.      LSCPResultSet result;
1166   */      try {
1167  String LSCPServer::SetMIDIInputPort(String MIDIInputPort, uint Samplerchannel) {          SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1168      dmsg(2,("LSCPServer: SetMIDIInputPort(MIDIInputPort=%s, Samplerchannel=%d)\n", MIDIInputPort.c_str(), Samplerchannel));          if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1169      return "ERR:0:Not implemented yet.\r\n";          std::map<uint, AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
1170            if (!devices.count(AudioDeviceId)) throw LinuxSamplerException("There is no audio output device with index " + ToString(AudioDeviceId));
1171            AudioOutputDevice* pDevice = devices[AudioDeviceId];
1172            pSamplerChannel->SetAudioOutputDevice(pDevice);
1173        }
1174        catch (LinuxSamplerException e) {
1175             result.Error(e);
1176        }
1177        return result.Produce();
1178    }
1179    
1180    String LSCPServer::SetAudioOutputType(String AudioOutputDriver, uint uiSamplerChannel) {
1181        dmsg(2,("LSCPServer: SetAudioOutputType(String AudioOutputDriver=%s, SamplerChannel=%d)\n",AudioOutputDriver.c_str(),uiSamplerChannel));
1182        LSCPResultSet result;
1183        try {
1184            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1185            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1186            // Driver type name aliasing...
1187            if (AudioOutputDriver == "Alsa") AudioOutputDriver = "ALSA";
1188            if (AudioOutputDriver == "Jack") AudioOutputDriver = "JACK";
1189            // Check if there's one audio output device already created
1190            // for the intended audio driver type (AudioOutputDriver)...
1191            AudioOutputDevice *pDevice = NULL;
1192            std::map<uint, AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
1193            std::map<uint, AudioOutputDevice*>::iterator iter = devices.begin();
1194            for (; iter != devices.end(); iter++) {
1195                if ((iter->second)->Driver() == AudioOutputDriver) {
1196                    pDevice = iter->second;
1197                    break;
1198                }
1199            }
1200            // If it doesn't exist, create a new one with default parameters...
1201            if (pDevice == NULL) {
1202                std::map<String,String> params;
1203                pDevice = pSampler->CreateAudioOutputDevice(AudioOutputDriver, params);
1204            }
1205            // Must have a device...
1206            if (pDevice == NULL)
1207                throw LinuxSamplerException("Internal error: could not create audio output device.");
1208            // Set it as the current channel device...
1209            pSamplerChannel->SetAudioOutputDevice(pDevice);
1210        }
1211        catch (LinuxSamplerException e) {
1212             result.Error(e);
1213        }
1214        return result.Produce();
1215    }
1216    
1217    String LSCPServer::SetMIDIInputPort(uint MIDIPort, uint uiSamplerChannel) {
1218        dmsg(2,("LSCPServer: SetMIDIInputPort(MIDIPort=%d, SamplerChannel=%d)\n",MIDIPort,uiSamplerChannel));
1219        LSCPResultSet result;
1220        try {
1221            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1222            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1223            pSamplerChannel->SetMidiInputPort(MIDIPort);
1224        }
1225        catch (LinuxSamplerException e) {
1226             result.Error(e);
1227        }
1228        return result.Produce();
1229    }
1230    
1231    String LSCPServer::SetMIDIInputChannel(uint MIDIChannel, uint uiSamplerChannel) {
1232        dmsg(2,("LSCPServer: SetMIDIInputChannel(MIDIChannel=%d, SamplerChannel=%d)\n",MIDIChannel,uiSamplerChannel));
1233        LSCPResultSet result;
1234        try {
1235            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1236            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1237            pSamplerChannel->SetMidiInputChannel((MidiInputPort::midi_chan_t) MIDIChannel);
1238        }
1239        catch (LinuxSamplerException e) {
1240             result.Error(e);
1241        }
1242        return result.Produce();
1243    }
1244    
1245    String LSCPServer::SetMIDIInputDevice(uint MIDIDeviceId, uint uiSamplerChannel) {
1246        dmsg(2,("LSCPServer: SetMIDIInputDevice(MIDIDeviceId=%d, SamplerChannel=%d)\n",MIDIDeviceId,uiSamplerChannel));
1247        LSCPResultSet result;
1248        try {
1249            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1250            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1251            std::map<uint, MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
1252            if (!devices.count(MIDIDeviceId)) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(MIDIDeviceId));
1253            MidiInputDevice* pDevice = devices[MIDIDeviceId];
1254            pSamplerChannel->SetMidiInputDevice(pDevice);
1255        }
1256        catch (LinuxSamplerException e) {
1257             result.Error(e);
1258        }
1259        return result.Produce();
1260    }
1261    
1262    String LSCPServer::SetMIDIInputType(String MidiInputDriver, uint uiSamplerChannel) {
1263        dmsg(2,("LSCPServer: SetMIDIInputType(String MidiInputDriver=%s, SamplerChannel=%d)\n",MidiInputDriver.c_str(),uiSamplerChannel));
1264        LSCPResultSet result;
1265        try {
1266            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1267            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1268            // Driver type name aliasing...
1269            if (MidiInputDriver == "Alsa") MidiInputDriver = "ALSA";
1270            // Check if there's one MIDI input device already created
1271            // for the intended MIDI driver type (MidiInputDriver)...
1272            MidiInputDevice *pDevice = NULL;
1273            std::map<uint, MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
1274            std::map<uint, MidiInputDevice*>::iterator iter = devices.begin();
1275            for (; iter != devices.end(); iter++) {
1276                if ((iter->second)->Driver() == MidiInputDriver) {
1277                    pDevice = iter->second;
1278                    break;
1279                }
1280            }
1281            // If it doesn't exist, create a new one with default parameters...
1282            if (pDevice == NULL) {
1283                std::map<String,String> params;
1284                pDevice = pSampler->CreateMidiInputDevice(MidiInputDriver, params);
1285                // Make it with at least one initial port.
1286                std::map<String,DeviceCreationParameter*> parameters = pDevice->DeviceParameters();
1287                parameters["PORTS"]->SetValue("1");
1288            }
1289            // Must have a device...
1290            if (pDevice == NULL)
1291                throw LinuxSamplerException("Internal error: could not create MIDI input device.");
1292            // Set it as the current channel device...
1293            pSamplerChannel->SetMidiInputDevice(pDevice);
1294        }
1295        catch (LinuxSamplerException e) {
1296             result.Error(e);
1297        }
1298        return result.Produce();
1299  }  }
1300    
1301  /**  /**
1302   * 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
1303   * engine of a particular sampler channel should listen to.   * engine of a particular sampler channel should listen to.
1304   */   */
1305  String LSCPServer::SetMIDIInputChannel(uint MIDIChannel, uint SamplerChannel) {  String LSCPServer::SetMIDIInput(uint MIDIDeviceId, uint MIDIPort, uint MIDIChannel, uint uiSamplerChannel) {
1306      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));
1307      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result;
1308        try {
1309            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1310            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1311            std::map<uint, MidiInputDevice*> devices =  pSampler->GetMidiInputDevices();
1312            if (!devices.count(MIDIDeviceId)) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(MIDIDeviceId));
1313            MidiInputDevice* pDevice = devices[MIDIDeviceId];
1314            pSamplerChannel->SetMidiInput(pDevice, MIDIPort, (MidiInputPort::midi_chan_t) MIDIChannel);
1315        }
1316        catch (LinuxSamplerException e) {
1317             result.Error(e);
1318        }
1319        return result.Produce();
1320  }  }
1321    
1322  /**  /**
1323   * 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
1324   * particular sampler channel.   * particular sampler channel.
1325   */   */
1326  String LSCPServer::SetVolume(double Volume, uint SamplerChannel) {  String LSCPServer::SetVolume(double dVolume, uint uiSamplerChannel) {
1327      dmsg(2,("LSCPServer: SetVolume(Volume=%f, SamplerChannel=%d)\n", Volume, SamplerChannel));      dmsg(2,("LSCPServer: SetVolume(Volume=%f, SamplerChannel=%d)\n", dVolume, uiSamplerChannel));
1328      pEngine->Volume = Volume;      LSCPResultSet result;
1329      return "OK\r\n";      try {
1330            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1331            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1332            EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
1333            if (!pEngineChannel) throw LinuxSamplerException("No engine type assigned to sampler channel");
1334            pEngineChannel->Volume(dVolume);
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 reset a particular sampler channel.   * Will be called by the parser to reset a particular sampler channel.
1344   */   */
1345  String LSCPServer::ResetChannel(uint SamplerChannel) {  String LSCPServer::ResetChannel(uint uiSamplerChannel) {
1346      dmsg(2,("LSCPServer: ResetChannel(SamplerChannel=%d)\n", SamplerChannel));      dmsg(2,("LSCPServer: ResetChannel(SamplerChannel=%d)\n", uiSamplerChannel));
1347      pEngine->Reset();      LSCPResultSet result;
1348      return "OK\r\n";      try {
1349            SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1350            if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1351            EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
1352            if (!pEngineChannel) throw LinuxSamplerException("No engine type assigned to sampler channel");
1353            pEngineChannel->GetEngine()->Reset();
1354        }
1355        catch (LinuxSamplerException e) {
1356             result.Error(e);
1357        }
1358        return result.Produce();
1359    }
1360    
1361    /**
1362     * Will be called by the parser to reset the whole sampler.
1363     */
1364    String LSCPServer::ResetSampler() {
1365        dmsg(2,("LSCPServer: ResetSampler()\n"));
1366        pSampler->Reset();
1367        LSCPResultSet result;
1368        return result.Produce();
1369  }  }
1370    
1371  /**  /**
1372   * 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
1373   * server for receiving event messages.   * server for receiving event messages.
1374   */   */
1375  String LSCPServer::SubscribeNotification(uint UDPPort) {  String LSCPServer::SubscribeNotification(LSCPEvent::event_t type) {
1376      dmsg(2,("LSCPServer: SubscribeNotification(UDPPort=%d)\n", UDPPort));      dmsg(2,("LSCPServer: SubscribeNotification(Event=%s)\n", LSCPEvent::Name(type).c_str()));
1377      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result;
1378        SubscriptionMutex.Lock();
1379        eventSubscriptions[type].push_back(currentSocket);
1380        SubscriptionMutex.Unlock();
1381        return result.Produce();
1382  }  }
1383    
1384  /**  /**
1385   * 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
1386   * for not receiving further event messages.   * for not receiving further event messages.
1387   */   */
1388  String LSCPServer::UnsubscribeNotification(String SessionID) {  String LSCPServer::UnsubscribeNotification(LSCPEvent::event_t type) {
1389      dmsg(2,("LSCPServer: UnsubscribeNotification(SessionID=%s)\n", SessionID.c_str()));      dmsg(2,("LSCPServer: UnsubscribeNotification(Event=%s)\n", LSCPEvent::Name(type).c_str()));
1390      return "ERR:0:Not implemented yet.\r\n";      LSCPResultSet result;
1391        SubscriptionMutex.Lock();
1392        eventSubscriptions[type].remove(currentSocket);
1393        SubscriptionMutex.Unlock();
1394        return result.Produce();
1395    }
1396    
1397    static int select_callback(void * lscpResultSet, int argc,
1398                            char **argv, char **azColName)
1399    {
1400        LSCPResultSet* resultSet = (LSCPResultSet*) lscpResultSet;
1401        resultSet->Add(argc, argv);
1402        return 0;
1403    }
1404    
1405    String LSCPServer::QueryDatabase(String query) {
1406        LSCPResultSet result;
1407    #if HAVE_SQLITE3
1408        char* zErrMsg = NULL;
1409        sqlite3 *db;
1410        String selectStr = "SELECT " + query;
1411    
1412        int rc = sqlite3_open("linuxsampler.db", &db);
1413        if (rc == SQLITE_OK)
1414        {
1415                rc = sqlite3_exec(db, selectStr.c_str(), select_callback, &result, &zErrMsg);
1416        }
1417        if ( rc != SQLITE_OK )
1418        {
1419                result.Error(String(zErrMsg), rc);
1420        }
1421        sqlite3_close(db);
1422    #else
1423        result.Error(String("SQLITE3 was not installed when linuxsampler was built. SELECT statement is not available."), 0);
1424    #endif
1425        return result.Produce();
1426    }
1427    
1428    /**
1429     * Will be called by the parser to enable or disable echo mode; if echo
1430     * mode is enabled, all commands from the client will (immediately) be
1431     * echoed back to the client.
1432     */
1433    String LSCPServer::SetEcho(yyparse_param_t* pSession, double boolean_value) {
1434        dmsg(2,("LSCPServer: SetEcho(val=%f)\n", boolean_value));
1435        LSCPResultSet result;
1436        try {
1437            if      (boolean_value == 0) pSession->bVerbose = false;
1438            else if (boolean_value == 1) pSession->bVerbose = true;
1439            else throw LinuxSamplerException("Not a boolean value, must either be 0 or 1");
1440        }
1441        catch (LinuxSamplerException e) {
1442             result.Error(e);
1443        }
1444        return result.Produce();
1445  }  }
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