/[svn]/linuxsampler/trunk/src/network/lscpserver.cpp
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Contents of /linuxsampler/trunk/src/network/lscpserver.cpp

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Revision 778 - (show annotations) (download)
Fri Sep 23 06:58:26 2005 UTC (18 years, 6 months ago) by iliev
File size: 69681 byte(s)
Added new LSCP commands: GET TOTAL_VOICE_COUNT,
GET TOTAL_VOICE_COUNT_MAX, SUBSCRIBE/UNSUBSCRIBE TOTAL_VOICE_COUNT

1 /***************************************************************************
2 * *
3 * LinuxSampler - modular, streaming capable sampler *
4 * *
5 * Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck *
6 * Copyright (C) 2005 Christian Schoenebeck *
7 * *
8 * 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 *
10 * the Free Software Foundation; either version 2 of the License, or *
11 * (at your option) any later version. *
12 * *
13 * This library is distributed in the hope that it will be useful, *
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
16 * GNU General Public License for more details. *
17 * *
18 * You should have received a copy of the GNU General Public License *
19 * along with this library; if not, write to the Free Software *
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, *
21 * MA 02111-1307 USA *
22 ***************************************************************************/
23
24 #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 "../engines/EngineChannelFactory.h"
37 #include "../drivers/audio/AudioOutputDeviceFactory.h"
38 #include "../drivers/midi/MidiInputDeviceFactory.h"
39
40 /**
41 * Below are a few static members of the LSCPServer class.
42 * The big assumption here is that LSCPServer is going to remain a singleton.
43 * These members are used to support client connections.
44 * Class handles multiple connections at the same time using select() and non-blocking recv()
45 * Commands are processed by a single LSCPServer thread.
46 * Notifications are delivered either by the thread that originated them
47 * or (if the resultset is currently in progress) by the LSCPServer thread
48 * after the resultset was sent out.
49 * This makes sure that resultsets can not be interrupted by notifications.
50 * This also makes sure that the thread sending notification is not blocked
51 * by the LSCPServer thread.
52 */
53 fd_set LSCPServer::fdSet;
54 int LSCPServer::currentSocket = -1;
55 std::vector<yyparse_param_t> LSCPServer::Sessions = std::vector<yyparse_param_t>();
56 std::map<int,String> LSCPServer::bufferedNotifies = std::map<int,String>();
57 std::map<int,String> LSCPServer::bufferedCommands = std::map<int,String>();
58 std::map< LSCPEvent::event_t, std::list<int> > LSCPServer::eventSubscriptions = std::map< LSCPEvent::event_t, std::list<int> >();
59 Mutex LSCPServer::NotifyMutex = Mutex();
60 Mutex LSCPServer::NotifyBufferMutex = Mutex();
61 Mutex LSCPServer::SubscriptionMutex = Mutex();
62 Mutex LSCPServer::RTNotifyMutex = Mutex();
63
64 LSCPServer::LSCPServer(Sampler* pSampler, long int addr, short int port) : Thread(true, false, 0, -4) {
65 SocketAddress.sin_family = AF_INET;
66 SocketAddress.sin_addr.s_addr = addr;
67 SocketAddress.sin_port = port;
68 this->pSampler = pSampler;
69 LSCPEvent::RegisterEvent(LSCPEvent::event_channel_count, "CHANNEL_COUNT");
70 LSCPEvent::RegisterEvent(LSCPEvent::event_voice_count, "VOICE_COUNT");
71 LSCPEvent::RegisterEvent(LSCPEvent::event_stream_count, "STREAM_COUNT");
72 LSCPEvent::RegisterEvent(LSCPEvent::event_buffer_fill, "BUFFER_FILL");
73 LSCPEvent::RegisterEvent(LSCPEvent::event_channel_info, "CHANNEL_INFO");
74 LSCPEvent::RegisterEvent(LSCPEvent::event_misc, "MISCELLANEOUS");
75 LSCPEvent::RegisterEvent(LSCPEvent::event_total_voice_count, "TOTAL_VOICE_COUNT");
76 hSocket = -1;
77 }
78
79 LSCPServer::~LSCPServer() {
80 if (hSocket >= 0) close(hSocket);
81 }
82
83 /**
84 * Blocks the calling thread until the LSCP Server is initialized and
85 * accepting socket connections, if the server is already initialized then
86 * this method will return immediately.
87 * @param TimeoutSeconds - optional: max. wait time in seconds
88 * (default: 0s)
89 * @param TimeoutNanoSeconds - optional: max wait time in nano seconds
90 * (default: 0ns)
91 * @returns 0 on success, a value less than 0 if timeout exceeded
92 */
93 int LSCPServer::WaitUntilInitialized(long TimeoutSeconds, long TimeoutNanoSeconds) {
94 return Initialized.WaitAndUnlockIf(false, TimeoutSeconds, TimeoutNanoSeconds);
95 }
96
97 int LSCPServer::Main() {
98 hSocket = socket(AF_INET, SOCK_STREAM, 0);
99 if (hSocket < 0) {
100 std::cerr << "LSCPServer: Could not create server socket." << std::endl;
101 //return -1;
102 exit(EXIT_FAILURE);
103 }
104
105 if (bind(hSocket, (sockaddr*) &SocketAddress, sizeof(sockaddr_in)) < 0) {
106 std::cerr << "LSCPServer: Could not bind server socket, retrying for " << ToString(LSCP_SERVER_BIND_TIMEOUT) << " seconds...";
107 for (int trial = 0; true; trial++) { // retry for LSCP_SERVER_BIND_TIMEOUT seconds
108 if (bind(hSocket, (sockaddr*) &SocketAddress, sizeof(sockaddr_in)) < 0) {
109 if (trial > LSCP_SERVER_BIND_TIMEOUT) {
110 std::cerr << "gave up!" << std::endl;
111 close(hSocket);
112 //return -1;
113 exit(EXIT_FAILURE);
114 }
115 else sleep(1); // sleep 1s
116 }
117 else break; // success
118 }
119 }
120
121 listen(hSocket, 1);
122 Initialized.Set(true);
123
124 // now wait for client connections and handle their requests
125 sockaddr_in client;
126 int length = sizeof(client);
127 FD_ZERO(&fdSet);
128 FD_SET(hSocket, &fdSet);
129 int maxSessions = hSocket;
130
131 while (true) {
132 fd_set selectSet = fdSet;
133 int retval = select(maxSessions+1, &selectSet, NULL, NULL, NULL);
134 if (retval == 0)
135 continue; //Nothing try again
136 if (retval == -1) {
137 std::cerr << "LSCPServer: Socket select error." << std::endl;
138 close(hSocket);
139 exit(EXIT_FAILURE);
140 }
141
142 //Accept new connections now (if any)
143 if (FD_ISSET(hSocket, &selectSet)) {
144 int socket = accept(hSocket, (sockaddr*) &client, (socklen_t*) &length);
145 if (socket < 0) {
146 std::cerr << "LSCPServer: Client connection failed." << std::endl;
147 exit(EXIT_FAILURE);
148 }
149
150 if (fcntl(socket, F_SETFL, O_NONBLOCK)) {
151 std::cerr << "LSCPServer: F_SETFL O_NONBLOCK failed." << std::endl;
152 exit(EXIT_FAILURE);
153 }
154
155 // Parser initialization
156 yyparse_param_t yyparse_param;
157 yyparse_param.pServer = this;
158 yyparse_param.hSession = socket;
159
160 Sessions.push_back(yyparse_param);
161 FD_SET(socket, &fdSet);
162 if (socket > maxSessions)
163 maxSessions = socket;
164 dmsg(1,("LSCPServer: Client connection established on socket:%d.\n", socket));
165 LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_misc, "Client connection established on socket", socket));
166 continue; //Maybe this was the only selected socket, better select again
167 }
168
169 //Something was selected and it was not the hSocket, so it must be some command(s) coming.
170 for (std::vector<yyparse_param_t>::iterator iter = Sessions.begin(); iter != Sessions.end(); iter++) {
171 if (FD_ISSET((*iter).hSession, &selectSet)) { //Was it this socket?
172 if (GetLSCPCommand(iter)) { //Have we read the entire command?
173 dmsg(3,("LSCPServer: Got command on socket %d, calling parser.\n", currentSocket));
174 int dummy; // just a temporary hack to fulfill the restart() function prototype
175 restart(NULL, dummy); // restart the 'scanner'
176 currentSocket = (*iter).hSession; //a hack
177 dmsg(2,("LSCPServer: [%s]\n",bufferedCommands[currentSocket].c_str()));
178 if ((*iter).bVerbose) { // if echo mode enabled
179 AnswerClient(bufferedCommands[currentSocket]);
180 }
181 int result = yyparse(&(*iter));
182 currentSocket = -1; //continuation of a hack
183 dmsg(3,("LSCPServer: Done parsing on socket %d.\n", currentSocket));
184 if (result == LSCP_QUIT) { //Was it a quit command by any chance?
185 CloseConnection(iter);
186 }
187 }
188 //socket may have been closed, iter may be invalid, get out of the loop for now.
189 //we'll be back if there is data.
190 break;
191 }
192 }
193
194 // check if some engine channel's parameter / status changed, if so notify the respective LSCP event subscribers
195 {
196 std::set<EngineChannel*> engineChannels = EngineChannelFactory::EngineChannelInstances();
197 std::set<EngineChannel*>::iterator itEngineChannel = engineChannels.begin();
198 std::set<EngineChannel*>::iterator itEnd = engineChannels.end();
199 for (; itEngineChannel != itEnd; ++itEngineChannel) {
200 if ((*itEngineChannel)->StatusChanged()) {
201 SendLSCPNotify(LSCPEvent(LSCPEvent::event_channel_info, (*itEngineChannel)->iSamplerChannelIndex));
202 }
203 }
204 }
205
206 //Now let's deliver late notifies (if any)
207 NotifyBufferMutex.Lock();
208 for (std::map<int,String>::iterator iterNotify = bufferedNotifies.begin(); iterNotify != bufferedNotifies.end(); iterNotify++) {
209 send(iterNotify->first, iterNotify->second.c_str(), iterNotify->second.size(), MSG_NOSIGNAL);
210 bufferedNotifies.erase(iterNotify);
211 }
212 NotifyBufferMutex.Unlock();
213 }
214 }
215
216 void LSCPServer::CloseConnection( std::vector<yyparse_param_t>::iterator iter ) {
217 int socket = (*iter).hSession;
218 dmsg(1,("LSCPServer: Client connection terminated on socket:%d.\n",socket));
219 LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_misc, "Client connection terminated on socket", socket));
220 Sessions.erase(iter);
221 FD_CLR(socket, &fdSet);
222 SubscriptionMutex.Lock(); //Must unsubscribe this socket from all events (if any)
223 for (std::map< LSCPEvent::event_t, std::list<int> >::iterator iter = eventSubscriptions.begin(); iter != eventSubscriptions.end(); iter++) {
224 iter->second.remove(socket);
225 }
226 SubscriptionMutex.Unlock();
227 NotifyMutex.Lock();
228 bufferedCommands.erase(socket);
229 bufferedNotifies.erase(socket);
230 close(socket);
231 NotifyMutex.Unlock();
232 }
233
234 int LSCPServer::EventSubscribers( std::list<LSCPEvent::event_t> events ) {
235 int subs = 0;
236 SubscriptionMutex.Lock();
237 for( std::list<LSCPEvent::event_t>::iterator iter = events.begin();
238 iter != events.end(); iter++)
239 {
240 subs += eventSubscriptions.count(*iter);
241 }
242 SubscriptionMutex.Unlock();
243 return subs;
244 }
245
246 void LSCPServer::SendLSCPNotify( LSCPEvent event ) {
247 SubscriptionMutex.Lock();
248 if (eventSubscriptions.count(event.GetType()) == 0) {
249 SubscriptionMutex.Unlock(); //Nobody is subscribed to this event
250 return;
251 }
252 std::list<int>::iterator iter = eventSubscriptions[event.GetType()].begin();
253 std::list<int>::iterator end = eventSubscriptions[event.GetType()].end();
254 String notify = event.Produce();
255
256 while (true) {
257 if (NotifyMutex.Trylock()) {
258 for(;iter != end; iter++)
259 send(*iter, notify.c_str(), notify.size(), MSG_NOSIGNAL);
260 NotifyMutex.Unlock();
261 break;
262 } else {
263 if (NotifyBufferMutex.Trylock()) {
264 for(;iter != end; iter++)
265 bufferedNotifies[*iter] += notify;
266 NotifyBufferMutex.Unlock();
267 break;
268 }
269 }
270 }
271 SubscriptionMutex.Unlock();
272 }
273
274 extern int GetLSCPCommand( void *buf, int max_size ) {
275 String command = LSCPServer::bufferedCommands[LSCPServer::currentSocket];
276 if (command.size() == 0) { //Parser wants input but we have nothing.
277 strcpy((char*) buf, "\n"); //So give it an empty command
278 return 1; //to keep it happy.
279 }
280
281 if (max_size < command.size()) {
282 std::cerr << "getLSCPCommand: Flex buffer too small, ignoring the command." << std::endl;
283 return 0; //This will never happen
284 }
285
286 strcpy((char*) buf, command.c_str());
287 LSCPServer::bufferedCommands.erase(LSCPServer::currentSocket);
288 return command.size();
289 }
290
291 /**
292 * Will be called to try to read the command from the socket
293 * If command is read, it will return true. Otherwise false is returned.
294 * In any case the received portion (complete or incomplete) is saved into bufferedCommand map.
295 */
296 bool LSCPServer::GetLSCPCommand( std::vector<yyparse_param_t>::iterator iter ) {
297 int socket = (*iter).hSession;
298 char c;
299 int i = 0;
300 while (true) {
301 int result = recv(socket, (void *)&c, 1, 0); //Read one character at a time for now
302 if (result == 0) { //socket was selected, so 0 here means client has closed the connection
303 CloseConnection(iter);
304 break;
305 }
306 if (result == 1) {
307 if (c == '\r')
308 continue; //Ignore CR
309 if (c == '\n') {
310 LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_misc, "Received \'" + bufferedCommands[socket] + "\' on socket", socket));
311 bufferedCommands[socket] += "\n";
312 return true; //Complete command was read
313 }
314 bufferedCommands[socket] += c;
315 }
316 if (result == -1) {
317 if (errno == EAGAIN) //Would block, try again later.
318 return false;
319 switch(errno) {
320 case EBADF:
321 dmsg(2,("LSCPScanner: The argument s is an invalid descriptor.\n"));
322 break;
323 case ECONNREFUSED:
324 dmsg(2,("LSCPScanner: A remote host refused to allow the network connection (typically because it is not running the requested service).\n"));
325 break;
326 case ENOTCONN:
327 dmsg(2,("LSCPScanner: The socket is associated with a connection-oriented protocol and has not been connected (see connect(2) and accept(2)).\n"));
328 break;
329 case ENOTSOCK:
330 dmsg(2,("LSCPScanner: The argument s does not refer to a socket.\n"));
331 break;
332 case EAGAIN:
333 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"));
334 break;
335 case EINTR:
336 dmsg(2,("LSCPScanner: The receive was interrupted by delivery of a signal before any data were available.\n"));
337 break;
338 case EFAULT:
339 dmsg(2,("LSCPScanner: The receive buffer pointer(s) point outside the process's address space.\n"));
340 break;
341 case EINVAL:
342 dmsg(2,("LSCPScanner: Invalid argument passed.\n"));
343 break;
344 case ENOMEM:
345 dmsg(2,("LSCPScanner: Could not allocate memory for recvmsg.\n"));
346 break;
347 default:
348 dmsg(2,("LSCPScanner: Unknown recv() error.\n"));
349 break;
350 }
351 CloseConnection(iter);
352 break;
353 }
354 }
355 return false;
356 }
357
358 /**
359 * Will be called by the parser whenever it wants to send an answer to the
360 * client / frontend.
361 *
362 * @param ReturnMessage - message that will be send to the client
363 */
364 void LSCPServer::AnswerClient(String ReturnMessage) {
365 dmsg(2,("LSCPServer::AnswerClient(ReturnMessage=%s)", ReturnMessage.c_str()));
366 if (currentSocket != -1) {
367 NotifyMutex.Lock();
368 send(currentSocket, ReturnMessage.c_str(), ReturnMessage.size(), MSG_NOSIGNAL);
369 NotifyMutex.Unlock();
370 }
371 }
372
373 /**
374 * Find a created audio output device index.
375 */
376 int LSCPServer::GetAudioOutputDeviceIndex ( AudioOutputDevice *pDevice )
377 {
378 // Search for the created device to get its index
379 std::map<uint, AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
380 std::map<uint, AudioOutputDevice*>::iterator iter = devices.begin();
381 for (; iter != devices.end(); iter++) {
382 if (iter->second == pDevice)
383 return iter->first;
384 }
385 // Not found.
386 return -1;
387 }
388
389 /**
390 * Find a created midi input device index.
391 */
392 int LSCPServer::GetMidiInputDeviceIndex ( MidiInputDevice *pDevice )
393 {
394 // Search for the created device to get its index
395 std::map<uint, MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
396 std::map<uint, MidiInputDevice*>::iterator iter = devices.begin();
397 for (; iter != devices.end(); iter++) {
398 if (iter->second == pDevice)
399 return iter->first;
400 }
401 // Not found.
402 return -1;
403 }
404
405 String LSCPServer::CreateAudioOutputDevice(String Driver, std::map<String,String> Parameters) {
406 dmsg(2,("LSCPServer: CreateAudioOutputDevice(Driver=%s)\n", Driver.c_str()));
407 LSCPResultSet result;
408 try {
409 AudioOutputDevice* pDevice = pSampler->CreateAudioOutputDevice(Driver, Parameters);
410 // search for the created device to get its index
411 int index = GetAudioOutputDeviceIndex(pDevice);
412 if (index == -1) throw LinuxSamplerException("Internal error: could not find created audio output device.");
413 result = index; // success
414 }
415 catch (LinuxSamplerException e) {
416 result.Error(e);
417 }
418 return result.Produce();
419 }
420
421 String LSCPServer::CreateMidiInputDevice(String Driver, std::map<String,String> Parameters) {
422 dmsg(2,("LSCPServer: CreateMidiInputDevice(Driver=%s)\n", Driver.c_str()));
423 LSCPResultSet result;
424 try {
425 MidiInputDevice* pDevice = pSampler->CreateMidiInputDevice(Driver, Parameters);
426 // search for the created device to get its index
427 int index = GetMidiInputDeviceIndex(pDevice);
428 if (index == -1) throw LinuxSamplerException("Internal error: could not find created midi input device.");
429 result = index; // success
430 }
431 catch (LinuxSamplerException e) {
432 result.Error(e);
433 }
434 return result.Produce();
435 }
436
437 String LSCPServer::DestroyAudioOutputDevice(uint DeviceIndex) {
438 dmsg(2,("LSCPServer: DestroyAudioOutputDevice(DeviceIndex=%d)\n", DeviceIndex));
439 LSCPResultSet result;
440 try {
441 std::map<uint, AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
442 if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceIndex) + ".");
443 AudioOutputDevice* pDevice = devices[DeviceIndex];
444 pSampler->DestroyAudioOutputDevice(pDevice);
445 }
446 catch (LinuxSamplerException e) {
447 result.Error(e);
448 }
449 return result.Produce();
450 }
451
452 String LSCPServer::DestroyMidiInputDevice(uint DeviceIndex) {
453 dmsg(2,("LSCPServer: DestroyMidiInputDevice(DeviceIndex=%d)\n", DeviceIndex));
454 LSCPResultSet result;
455 try {
456 std::map<uint, MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
457 if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceIndex) + ".");
458 MidiInputDevice* pDevice = devices[DeviceIndex];
459 pSampler->DestroyMidiInputDevice(pDevice);
460 }
461 catch (LinuxSamplerException e) {
462 result.Error(e);
463 }
464 return result.Produce();
465 }
466
467 /**
468 * Will be called by the parser to load an instrument.
469 */
470 String LSCPServer::LoadInstrument(String Filename, uint uiInstrument, uint uiSamplerChannel, bool bBackground) {
471 dmsg(2,("LSCPServer: LoadInstrument(Filename=%s,Instrument=%d,SamplerChannel=%d)\n", Filename.c_str(), uiInstrument, uiSamplerChannel));
472 LSCPResultSet result;
473 try {
474 SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
475 if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
476 EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
477 if (!pEngineChannel) throw LinuxSamplerException("No engine type assigned to sampler channel yet");
478 if (!pSamplerChannel->GetAudioOutputDevice())
479 throw LinuxSamplerException("No audio output device connected to sampler channel");
480 if (bBackground) {
481 InstrumentLoader.StartNewLoad(Filename, uiInstrument, pEngineChannel);
482 }
483 else {
484 // tell the engine channel which instrument to load
485 pEngineChannel->PrepareLoadInstrument(Filename.c_str(), uiInstrument);
486 // actually start to load the instrument (blocks until completed)
487 pEngineChannel->LoadInstrument();
488 }
489 }
490 catch (LinuxSamplerException e) {
491 result.Error(e);
492 }
493 return result.Produce();
494 }
495
496 /**
497 * Will be called by the parser to assign a sampler engine type to a
498 * sampler channel.
499 */
500 String LSCPServer::SetEngineType(String EngineName, uint uiSamplerChannel) {
501 dmsg(2,("LSCPServer: SetEngineType(EngineName=%s,uiSamplerChannel=%d)\n", EngineName.c_str(), uiSamplerChannel));
502 LSCPResultSet result;
503 try {
504 SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
505 if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
506 LockRTNotify();
507 pSamplerChannel->SetEngineType(EngineName);
508 if(HasSoloChannel()) pSamplerChannel->GetEngineChannel()->SetMute(-1);
509 UnlockRTNotify();
510 }
511 catch (LinuxSamplerException e) {
512 result.Error(e);
513 }
514 return result.Produce();
515 }
516
517 /**
518 * Will be called by the parser to get the amount of sampler channels.
519 */
520 String LSCPServer::GetChannels() {
521 dmsg(2,("LSCPServer: GetChannels()\n"));
522 LSCPResultSet result;
523 result.Add(pSampler->SamplerChannels());
524 return result.Produce();
525 }
526
527 /**
528 * Will be called by the parser to get the list of sampler channels.
529 */
530 String LSCPServer::ListChannels() {
531 dmsg(2,("LSCPServer: ListChannels()\n"));
532 String list;
533 std::map<uint,SamplerChannel*> channels = pSampler->GetSamplerChannels();
534 std::map<uint,SamplerChannel*>::iterator iter = channels.begin();
535 for (; iter != channels.end(); iter++) {
536 if (list != "") list += ",";
537 list += ToString(iter->first);
538 }
539 LSCPResultSet result;
540 result.Add(list);
541 return result.Produce();
542 }
543
544 /**
545 * Will be called by the parser to add a sampler channel.
546 */
547 String LSCPServer::AddChannel() {
548 dmsg(2,("LSCPServer: AddChannel()\n"));
549 SamplerChannel* pSamplerChannel = pSampler->AddSamplerChannel();
550 LSCPResultSet result(pSamplerChannel->Index());
551 return result.Produce();
552 }
553
554 /**
555 * Will be called by the parser to remove a sampler channel.
556 */
557 String LSCPServer::RemoveChannel(uint uiSamplerChannel) {
558 dmsg(2,("LSCPServer: RemoveChannel(SamplerChannel=%d)\n", uiSamplerChannel));
559 LSCPResultSet result;
560 LockRTNotify();
561 pSampler->RemoveSamplerChannel(uiSamplerChannel);
562 UnlockRTNotify();
563 return result.Produce();
564 }
565
566 /**
567 * Will be called by the parser to get the amount of all available engines.
568 */
569 String LSCPServer::GetAvailableEngines() {
570 dmsg(2,("LSCPServer: GetAvailableEngines()\n"));
571 LSCPResultSet result("1");
572 return result.Produce();
573 }
574
575 /**
576 * Will be called by the parser to get a list of all available engines.
577 */
578 String LSCPServer::ListAvailableEngines() {
579 dmsg(2,("LSCPServer: ListAvailableEngines()\n"));
580 LSCPResultSet result("\'GIG\'");
581 return result.Produce();
582 }
583
584 /**
585 * Will be called by the parser to get descriptions for a particular
586 * sampler engine.
587 */
588 String LSCPServer::GetEngineInfo(String EngineName) {
589 dmsg(2,("LSCPServer: GetEngineInfo(EngineName=%s)\n", EngineName.c_str()));
590 LSCPResultSet result;
591 try {
592 Engine* pEngine = EngineFactory::Create(EngineName);
593 result.Add("DESCRIPTION", pEngine->Description());
594 result.Add("VERSION", pEngine->Version());
595 EngineFactory::Destroy(pEngine);
596 }
597 catch (LinuxSamplerException e) {
598 result.Error(e);
599 }
600 return result.Produce();
601 }
602
603 /**
604 * Will be called by the parser to get informations about a particular
605 * sampler channel.
606 */
607 String LSCPServer::GetChannelInfo(uint uiSamplerChannel) {
608 dmsg(2,("LSCPServer: GetChannelInfo(SamplerChannel=%d)\n", uiSamplerChannel));
609 LSCPResultSet result;
610 try {
611 SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
612 if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
613 EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
614
615 //Defaults values
616 String EngineName = "NONE";
617 float Volume = 0.0f;
618 String InstrumentFileName = "NONE";
619 String InstrumentName = "NONE";
620 int InstrumentIndex = -1;
621 int InstrumentStatus = -1;
622 int AudioOutputChannels = 0;
623 String AudioRouting;
624 int Mute = 0;
625 bool Solo = false;
626
627 if (pEngineChannel) {
628 EngineName = pEngineChannel->EngineName();
629 AudioOutputChannels = pEngineChannel->Channels();
630 Volume = pEngineChannel->Volume();
631 InstrumentStatus = pEngineChannel->InstrumentStatus();
632 InstrumentIndex = pEngineChannel->InstrumentIndex();
633 if (InstrumentIndex != -1) {
634 InstrumentFileName = pEngineChannel->InstrumentFileName();
635 InstrumentName = pEngineChannel->InstrumentName();
636 }
637 for (int chan = 0; chan < pEngineChannel->Channels(); chan++) {
638 if (AudioRouting != "") AudioRouting += ",";
639 AudioRouting += ToString(pEngineChannel->OutputChannel(chan));
640 }
641 Mute = pEngineChannel->GetMute();
642 Solo = pEngineChannel->GetSolo();
643 }
644
645 result.Add("ENGINE_NAME", EngineName);
646 result.Add("VOLUME", Volume);
647
648 //Some not-so-hardcoded stuff to make GUI look good
649 result.Add("AUDIO_OUTPUT_DEVICE", GetAudioOutputDeviceIndex(pSamplerChannel->GetAudioOutputDevice()));
650 result.Add("AUDIO_OUTPUT_CHANNELS", AudioOutputChannels);
651 result.Add("AUDIO_OUTPUT_ROUTING", AudioRouting);
652
653 result.Add("MIDI_INPUT_DEVICE", GetMidiInputDeviceIndex(pSamplerChannel->GetMidiInputDevice()));
654 result.Add("MIDI_INPUT_PORT", pSamplerChannel->GetMidiInputPort());
655 if (pSamplerChannel->GetMidiInputChannel() == midi_chan_all) result.Add("MIDI_INPUT_CHANNEL", "ALL");
656 else result.Add("MIDI_INPUT_CHANNEL", pSamplerChannel->GetMidiInputChannel());
657
658 result.Add("INSTRUMENT_FILE", InstrumentFileName);
659 result.Add("INSTRUMENT_NR", InstrumentIndex);
660 result.Add("INSTRUMENT_NAME", InstrumentName);
661 result.Add("INSTRUMENT_STATUS", InstrumentStatus);
662 result.Add("MUTE", Mute == -1 ? "MUTED_BY_SOLO" : (Mute ? "true" : "false"));
663 result.Add("SOLO", Solo);
664 }
665 catch (LinuxSamplerException e) {
666 result.Error(e);
667 }
668 return result.Produce();
669 }
670
671 /**
672 * Will be called by the parser to get the amount of active voices on a
673 * particular sampler channel.
674 */
675 String LSCPServer::GetVoiceCount(uint uiSamplerChannel) {
676 dmsg(2,("LSCPServer: GetVoiceCount(SamplerChannel=%d)\n", uiSamplerChannel));
677 LSCPResultSet result;
678 try {
679 SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
680 if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
681 EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
682 if (!pEngineChannel) throw LinuxSamplerException("No engine loaded on sampler channel");
683 if (!pEngineChannel->GetEngine()) throw LinuxSamplerException("No audio output device connected to sampler channel");
684 result.Add(pEngineChannel->GetEngine()->VoiceCount());
685 }
686 catch (LinuxSamplerException e) {
687 result.Error(e);
688 }
689 return result.Produce();
690 }
691
692 /**
693 * Will be called by the parser to get the amount of active disk streams on a
694 * particular sampler channel.
695 */
696 String LSCPServer::GetStreamCount(uint uiSamplerChannel) {
697 dmsg(2,("LSCPServer: GetStreamCount(SamplerChannel=%d)\n", uiSamplerChannel));
698 LSCPResultSet result;
699 try {
700 SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
701 if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
702 EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
703 if (!pEngineChannel) throw LinuxSamplerException("No engine type assigned to sampler channel");
704 if (!pEngineChannel->GetEngine()) throw LinuxSamplerException("No audio output device connected to sampler channel");
705 result.Add(pEngineChannel->GetEngine()->DiskStreamCount());
706 }
707 catch (LinuxSamplerException e) {
708 result.Error(e);
709 }
710 return result.Produce();
711 }
712
713 /**
714 * Will be called by the parser to get the buffer fill states of all disk
715 * streams on a particular sampler channel.
716 */
717 String LSCPServer::GetBufferFill(fill_response_t ResponseType, uint uiSamplerChannel) {
718 dmsg(2,("LSCPServer: GetBufferFill(ResponseType=%d, SamplerChannel=%d)\n", ResponseType, uiSamplerChannel));
719 LSCPResultSet result;
720 try {
721 SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
722 if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
723 EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
724 if (!pEngineChannel) throw LinuxSamplerException("No engine type assigned to sampler channel");
725 if (!pEngineChannel->GetEngine()) throw LinuxSamplerException("No audio output device connected to sampler channel");
726 if (!pEngineChannel->GetEngine()->DiskStreamSupported()) result.Add("NA");
727 else {
728 switch (ResponseType) {
729 case fill_response_bytes:
730 result.Add(pEngineChannel->GetEngine()->DiskStreamBufferFillBytes());
731 break;
732 case fill_response_percentage:
733 result.Add(pEngineChannel->GetEngine()->DiskStreamBufferFillPercentage());
734 break;
735 default:
736 throw LinuxSamplerException("Unknown fill response type");
737 }
738 }
739 }
740 catch (LinuxSamplerException e) {
741 result.Error(e);
742 }
743 return result.Produce();
744 }
745
746 String LSCPServer::GetAvailableAudioOutputDrivers() {
747 dmsg(2,("LSCPServer: GetAvailableAudioOutputDrivers()\n"));
748 LSCPResultSet result;
749 try {
750 int n = AudioOutputDeviceFactory::AvailableDrivers().size();
751 result.Add(n);
752 }
753 catch (LinuxSamplerException e) {
754 result.Error(e);
755 }
756 return result.Produce();
757 }
758
759 String LSCPServer::ListAvailableAudioOutputDrivers() {
760 dmsg(2,("LSCPServer: ListAvailableAudioOutputDrivers()\n"));
761 LSCPResultSet result;
762 try {
763 String s = AudioOutputDeviceFactory::AvailableDriversAsString();
764 result.Add(s);
765 }
766 catch (LinuxSamplerException e) {
767 result.Error(e);
768 }
769 return result.Produce();
770 }
771
772 String LSCPServer::GetAvailableMidiInputDrivers() {
773 dmsg(2,("LSCPServer: GetAvailableMidiInputDrivers()\n"));
774 LSCPResultSet result;
775 try {
776 int n = MidiInputDeviceFactory::AvailableDrivers().size();
777 result.Add(n);
778 }
779 catch (LinuxSamplerException e) {
780 result.Error(e);
781 }
782 return result.Produce();
783 }
784
785 String LSCPServer::ListAvailableMidiInputDrivers() {
786 dmsg(2,("LSCPServer: ListAvailableMidiInputDrivers()\n"));
787 LSCPResultSet result;
788 try {
789 String s = MidiInputDeviceFactory::AvailableDriversAsString();
790 result.Add(s);
791 }
792 catch (LinuxSamplerException e) {
793 result.Error(e);
794 }
795 return result.Produce();
796 }
797
798 String LSCPServer::GetMidiInputDriverInfo(String Driver) {
799 dmsg(2,("LSCPServer: GetMidiInputDriverInfo(Driver=%s)\n",Driver.c_str()));
800 LSCPResultSet result;
801 try {
802 result.Add("DESCRIPTION", MidiInputDeviceFactory::GetDriverDescription(Driver));
803 result.Add("VERSION", MidiInputDeviceFactory::GetDriverVersion(Driver));
804
805 std::map<String,DeviceCreationParameter*> parameters = MidiInputDeviceFactory::GetAvailableDriverParameters(Driver);
806 if (parameters.size()) { // if there are parameters defined for this driver
807 String s;
808 std::map<String,DeviceCreationParameter*>::iterator iter = parameters.begin();
809 for (;iter != parameters.end(); iter++) {
810 if (s != "") s += ",";
811 s += iter->first;
812 }
813 result.Add("PARAMETERS", s);
814 }
815 }
816 catch (LinuxSamplerException e) {
817 result.Error(e);
818 }
819 return result.Produce();
820 }
821
822 String LSCPServer::GetAudioOutputDriverInfo(String Driver) {
823 dmsg(2,("LSCPServer: GetAudioOutputDriverInfo(Driver=%s)\n",Driver.c_str()));
824 LSCPResultSet result;
825 try {
826 result.Add("DESCRIPTION", AudioOutputDeviceFactory::GetDriverDescription(Driver));
827 result.Add("VERSION", AudioOutputDeviceFactory::GetDriverVersion(Driver));
828
829 std::map<String,DeviceCreationParameter*> parameters = AudioOutputDeviceFactory::GetAvailableDriverParameters(Driver);
830 if (parameters.size()) { // if there are parameters defined for this driver
831 String s;
832 std::map<String,DeviceCreationParameter*>::iterator iter = parameters.begin();
833 for (;iter != parameters.end(); iter++) {
834 if (s != "") s += ",";
835 s += iter->first;
836 }
837 result.Add("PARAMETERS", s);
838 }
839 }
840 catch (LinuxSamplerException e) {
841 result.Error(e);
842 }
843 return result.Produce();
844 }
845
846 String LSCPServer::GetMidiInputDriverParameterInfo(String Driver, String Parameter, std::map<String,String> DependencyList) {
847 dmsg(2,("LSCPServer: GetMidiInputDriverParameterInfo(Driver=%s,Parameter=%s,DependencyListSize=%d)\n",Driver.c_str(),Parameter.c_str(),DependencyList.size()));
848 LSCPResultSet result;
849 try {
850 DeviceCreationParameter* pParameter = MidiInputDeviceFactory::GetDriverParameter(Driver, Parameter);
851 result.Add("TYPE", pParameter->Type());
852 result.Add("DESCRIPTION", pParameter->Description());
853 result.Add("MANDATORY", pParameter->Mandatory());
854 result.Add("FIX", pParameter->Fix());
855 result.Add("MULTIPLICITY", pParameter->Multiplicity());
856 optional<String> oDepends = pParameter->Depends();
857 optional<String> oDefault = pParameter->Default(DependencyList);
858 optional<String> oRangeMin = pParameter->RangeMin(DependencyList);
859 optional<String> oRangeMax = pParameter->RangeMax(DependencyList);
860 optional<String> oPossibilities = pParameter->Possibilities(DependencyList);
861 if (oDepends) result.Add("DEPENDS", *oDepends);
862 if (oDefault) result.Add("DEFAULT", *oDefault);
863 if (oRangeMin) result.Add("RANGE_MIN", *oRangeMin);
864 if (oRangeMax) result.Add("RANGE_MAX", *oRangeMax);
865 if (oPossibilities) result.Add("POSSIBILITIES", *oPossibilities);
866 }
867 catch (LinuxSamplerException e) {
868 result.Error(e);
869 }
870 return result.Produce();
871 }
872
873 String LSCPServer::GetAudioOutputDriverParameterInfo(String Driver, String Parameter, std::map<String,String> DependencyList) {
874 dmsg(2,("LSCPServer: GetAudioOutputDriverParameterInfo(Driver=%s,Parameter=%s,DependencyListSize=%d)\n",Driver.c_str(),Parameter.c_str(),DependencyList.size()));
875 LSCPResultSet result;
876 try {
877 DeviceCreationParameter* pParameter = AudioOutputDeviceFactory::GetDriverParameter(Driver, Parameter);
878 result.Add("TYPE", pParameter->Type());
879 result.Add("DESCRIPTION", pParameter->Description());
880 result.Add("MANDATORY", pParameter->Mandatory());
881 result.Add("FIX", pParameter->Fix());
882 result.Add("MULTIPLICITY", pParameter->Multiplicity());
883 optional<String> oDepends = pParameter->Depends();
884 optional<String> oDefault = pParameter->Default(DependencyList);
885 optional<String> oRangeMin = pParameter->RangeMin(DependencyList);
886 optional<String> oRangeMax = pParameter->RangeMax(DependencyList);
887 optional<String> oPossibilities = pParameter->Possibilities(DependencyList);
888 if (oDepends) result.Add("DEPENDS", *oDepends);
889 if (oDefault) result.Add("DEFAULT", *oDefault);
890 if (oRangeMin) result.Add("RANGE_MIN", *oRangeMin);
891 if (oRangeMax) result.Add("RANGE_MAX", *oRangeMax);
892 if (oPossibilities) result.Add("POSSIBILITIES", *oPossibilities);
893 }
894 catch (LinuxSamplerException e) {
895 result.Error(e);
896 }
897 return result.Produce();
898 }
899
900 String LSCPServer::GetAudioOutputDeviceCount() {
901 dmsg(2,("LSCPServer: GetAudioOutputDeviceCount()\n"));
902 LSCPResultSet result;
903 try {
904 uint count = pSampler->AudioOutputDevices();
905 result.Add(count); // success
906 }
907 catch (LinuxSamplerException e) {
908 result.Error(e);
909 }
910 return result.Produce();
911 }
912
913 String LSCPServer::GetMidiInputDeviceCount() {
914 dmsg(2,("LSCPServer: GetMidiInputDeviceCount()\n"));
915 LSCPResultSet result;
916 try {
917 uint count = pSampler->MidiInputDevices();
918 result.Add(count); // success
919 }
920 catch (LinuxSamplerException e) {
921 result.Error(e);
922 }
923 return result.Produce();
924 }
925
926 String LSCPServer::GetAudioOutputDevices() {
927 dmsg(2,("LSCPServer: GetAudioOutputDevices()\n"));
928 LSCPResultSet result;
929 try {
930 String s;
931 std::map<uint, AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
932 std::map<uint, AudioOutputDevice*>::iterator iter = devices.begin();
933 for (; iter != devices.end(); iter++) {
934 if (s != "") s += ",";
935 s += ToString(iter->first);
936 }
937 result.Add(s);
938 }
939 catch (LinuxSamplerException e) {
940 result.Error(e);
941 }
942 return result.Produce();
943 }
944
945 String LSCPServer::GetMidiInputDevices() {
946 dmsg(2,("LSCPServer: GetMidiInputDevices()\n"));
947 LSCPResultSet result;
948 try {
949 String s;
950 std::map<uint, MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
951 std::map<uint, MidiInputDevice*>::iterator iter = devices.begin();
952 for (; iter != devices.end(); iter++) {
953 if (s != "") s += ",";
954 s += ToString(iter->first);
955 }
956 result.Add(s);
957 }
958 catch (LinuxSamplerException e) {
959 result.Error(e);
960 }
961 return result.Produce();
962 }
963
964 String LSCPServer::GetAudioOutputDeviceInfo(uint DeviceIndex) {
965 dmsg(2,("LSCPServer: GetAudioOutputDeviceInfo(DeviceIndex=%d)\n",DeviceIndex));
966 LSCPResultSet result;
967 try {
968 std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
969 if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceIndex) + ".");
970 AudioOutputDevice* pDevice = devices[DeviceIndex];
971 result.Add("DRIVER", pDevice->Driver());
972 std::map<String,DeviceCreationParameter*> parameters = pDevice->DeviceParameters();
973 std::map<String,DeviceCreationParameter*>::iterator iter = parameters.begin();
974 for (; iter != parameters.end(); iter++) {
975 result.Add(iter->first, iter->second->Value());
976 }
977 }
978 catch (LinuxSamplerException e) {
979 result.Error(e);
980 }
981 return result.Produce();
982 }
983
984 String LSCPServer::GetMidiInputDeviceInfo(uint DeviceIndex) {
985 dmsg(2,("LSCPServer: GetMidiInputDeviceInfo(DeviceIndex=%d)\n",DeviceIndex));
986 LSCPResultSet result;
987 try {
988 std::map<uint,MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
989 if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(DeviceIndex) + ".");
990 MidiInputDevice* pDevice = devices[DeviceIndex];
991 result.Add("DRIVER", pDevice->Driver());
992 std::map<String,DeviceCreationParameter*> parameters = pDevice->DeviceParameters();
993 std::map<String,DeviceCreationParameter*>::iterator iter = parameters.begin();
994 for (; iter != parameters.end(); iter++) {
995 result.Add(iter->first, iter->second->Value());
996 }
997 }
998 catch (LinuxSamplerException e) {
999 result.Error(e);
1000 }
1001 return result.Produce();
1002 }
1003 String LSCPServer::GetMidiInputPortInfo(uint DeviceIndex, uint PortIndex) {
1004 dmsg(2,("LSCPServer: GetMidiInputPortInfo(DeviceIndex=%d, PortIndex=%d)\n",DeviceIndex, PortIndex));
1005 LSCPResultSet result;
1006 try {
1007 // get MIDI input device
1008 std::map<uint,MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
1009 if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(DeviceIndex) + ".");
1010 MidiInputDevice* pDevice = devices[DeviceIndex];
1011
1012 // get MIDI port
1013 MidiInputPort* pMidiInputPort = pDevice->GetPort(PortIndex);
1014 if (!pMidiInputPort) throw LinuxSamplerException("There is no MIDI input port with index " + ToString(PortIndex) + ".");
1015
1016 // return the values of all MIDI port parameters
1017 std::map<String,DeviceRuntimeParameter*> parameters = pMidiInputPort->PortParameters();
1018 std::map<String,DeviceRuntimeParameter*>::iterator iter = parameters.begin();
1019 for (; iter != parameters.end(); iter++) {
1020 result.Add(iter->first, iter->second->Value());
1021 }
1022 }
1023 catch (LinuxSamplerException e) {
1024 result.Error(e);
1025 }
1026 return result.Produce();
1027 }
1028
1029 String LSCPServer::GetAudioOutputChannelInfo(uint DeviceId, uint ChannelId) {
1030 dmsg(2,("LSCPServer: GetAudioOutputChannelInfo(DeviceId=%d,ChannelId)\n",DeviceId,ChannelId));
1031 LSCPResultSet result;
1032 try {
1033 // get audio output device
1034 std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
1035 if (!devices.count(DeviceId)) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceId) + ".");
1036 AudioOutputDevice* pDevice = devices[DeviceId];
1037
1038 // get audio channel
1039 AudioChannel* pChannel = pDevice->Channel(ChannelId);
1040 if (!pChannel) throw LinuxSamplerException("Audio output device does not have audio channel " + ToString(ChannelId) + ".");
1041
1042 // return the values of all audio channel parameters
1043 std::map<String,DeviceRuntimeParameter*> parameters = pChannel->ChannelParameters();
1044 std::map<String,DeviceRuntimeParameter*>::iterator iter = parameters.begin();
1045 for (; iter != parameters.end(); iter++) {
1046 result.Add(iter->first, iter->second->Value());
1047 }
1048 }
1049 catch (LinuxSamplerException e) {
1050 result.Error(e);
1051 }
1052 return result.Produce();
1053 }
1054
1055 String LSCPServer::GetMidiInputPortParameterInfo(uint DeviceId, uint PortId, String ParameterName) {
1056 dmsg(2,("LSCPServer: GetMidiInputPortParameterInfo(DeviceId=%d,PortId=%d,ParameterName=%s)\n",DeviceId,PortId,ParameterName.c_str()));
1057 LSCPResultSet result;
1058 try {
1059 // get MIDI input device
1060 std::map<uint,MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
1061 if (!devices.count(DeviceId)) throw LinuxSamplerException("There is no midi input device with index " + ToString(DeviceId) + ".");
1062 MidiInputDevice* pDevice = devices[DeviceId];
1063
1064 // get midi port
1065 MidiInputPort* pPort = pDevice->GetPort(PortId);
1066 if (!pPort) throw LinuxSamplerException("Midi input device does not have port " + ToString(PortId) + ".");
1067
1068 // get desired port parameter
1069 std::map<String,DeviceRuntimeParameter*> parameters = pPort->PortParameters();
1070 if (!parameters.count(ParameterName)) throw LinuxSamplerException("Midi port does not provide a parameter '" + ParameterName + "'.");
1071 DeviceRuntimeParameter* pParameter = parameters[ParameterName];
1072
1073 // return all fields of this audio channel parameter
1074 result.Add("TYPE", pParameter->Type());
1075 result.Add("DESCRIPTION", pParameter->Description());
1076 result.Add("FIX", pParameter->Fix());
1077 result.Add("MULTIPLICITY", pParameter->Multiplicity());
1078 if (pParameter->RangeMin()) result.Add("RANGE_MIN", *pParameter->RangeMin());
1079 if (pParameter->RangeMax()) result.Add("RANGE_MAX", *pParameter->RangeMax());
1080 if (pParameter->Possibilities()) result.Add("POSSIBILITIES", *pParameter->Possibilities());
1081 }
1082 catch (LinuxSamplerException e) {
1083 result.Error(e);
1084 }
1085 return result.Produce();
1086 }
1087
1088 String LSCPServer::GetAudioOutputChannelParameterInfo(uint DeviceId, uint ChannelId, String ParameterName) {
1089 dmsg(2,("LSCPServer: GetAudioOutputChannelParameterInfo(DeviceId=%d,ChannelId=%d,ParameterName=%s)\n",DeviceId,ChannelId,ParameterName.c_str()));
1090 LSCPResultSet result;
1091 try {
1092 // get audio output device
1093 std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
1094 if (!devices.count(DeviceId)) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceId) + ".");
1095 AudioOutputDevice* pDevice = devices[DeviceId];
1096
1097 // get audio channel
1098 AudioChannel* pChannel = pDevice->Channel(ChannelId);
1099 if (!pChannel) throw LinuxSamplerException("Audio output device does not have audio channel " + ToString(ChannelId) + ".");
1100
1101 // get desired audio channel parameter
1102 std::map<String,DeviceRuntimeParameter*> parameters = pChannel->ChannelParameters();
1103 if (!parameters.count(ParameterName)) throw LinuxSamplerException("Audio channel does not provide a parameter '" + ParameterName + "'.");
1104 DeviceRuntimeParameter* pParameter = parameters[ParameterName];
1105
1106 // return all fields of this audio channel parameter
1107 result.Add("TYPE", pParameter->Type());
1108 result.Add("DESCRIPTION", pParameter->Description());
1109 result.Add("FIX", pParameter->Fix());
1110 result.Add("MULTIPLICITY", pParameter->Multiplicity());
1111 if (pParameter->RangeMin()) result.Add("RANGE_MIN", *pParameter->RangeMin());
1112 if (pParameter->RangeMax()) result.Add("RANGE_MAX", *pParameter->RangeMax());
1113 if (pParameter->Possibilities()) result.Add("POSSIBILITIES", *pParameter->Possibilities());
1114 }
1115 catch (LinuxSamplerException e) {
1116 result.Error(e);
1117 }
1118 return result.Produce();
1119 }
1120
1121 String LSCPServer::SetAudioOutputChannelParameter(uint DeviceId, uint ChannelId, String ParamKey, String ParamVal) {
1122 dmsg(2,("LSCPServer: SetAudioOutputChannelParameter(DeviceId=%d,ChannelId=%d,ParamKey=%s,ParamVal=%s)\n",DeviceId,ChannelId,ParamKey.c_str(),ParamVal.c_str()));
1123 LSCPResultSet result;
1124 try {
1125 // get audio output device
1126 std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
1127 if (!devices.count(DeviceId)) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceId) + ".");
1128 AudioOutputDevice* pDevice = devices[DeviceId];
1129
1130 // get audio channel
1131 AudioChannel* pChannel = pDevice->Channel(ChannelId);
1132 if (!pChannel) throw LinuxSamplerException("Audio output device does not have audio channel " + ToString(ChannelId) + ".");
1133
1134 // get desired audio channel parameter
1135 std::map<String,DeviceRuntimeParameter*> parameters = pChannel->ChannelParameters();
1136 if (!parameters.count(ParamKey)) throw LinuxSamplerException("Audio channel does not provide a parameter '" + ParamKey + "'.");
1137 DeviceRuntimeParameter* pParameter = parameters[ParamKey];
1138
1139 // set new channel parameter value
1140 pParameter->SetValue(ParamVal);
1141 }
1142 catch (LinuxSamplerException e) {
1143 result.Error(e);
1144 }
1145 return result.Produce();
1146 }
1147
1148 String LSCPServer::SetAudioOutputDeviceParameter(uint DeviceIndex, String ParamKey, String ParamVal) {
1149 dmsg(2,("LSCPServer: SetAudioOutputDeviceParameter(DeviceIndex=%d,ParamKey=%s,ParamVal=%s)\n",DeviceIndex,ParamKey.c_str(),ParamVal.c_str()));
1150 LSCPResultSet result;
1151 try {
1152 std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
1153 if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceIndex) + ".");
1154 AudioOutputDevice* pDevice = devices[DeviceIndex];
1155 std::map<String,DeviceCreationParameter*> parameters = pDevice->DeviceParameters();
1156 if (!parameters.count(ParamKey)) throw LinuxSamplerException("Audio output device " + ToString(DeviceIndex) + " does not have a device parameter '" + ParamKey + "'");
1157 parameters[ParamKey]->SetValue(ParamVal);
1158 }
1159 catch (LinuxSamplerException e) {
1160 result.Error(e);
1161 }
1162 return result.Produce();
1163 }
1164
1165 String LSCPServer::SetMidiInputDeviceParameter(uint DeviceIndex, String ParamKey, String ParamVal) {
1166 dmsg(2,("LSCPServer: SetMidiOutputDeviceParameter(DeviceIndex=%d,ParamKey=%s,ParamVal=%s)\n",DeviceIndex,ParamKey.c_str(),ParamVal.c_str()));
1167 LSCPResultSet result;
1168 try {
1169 std::map<uint,MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
1170 if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(DeviceIndex) + ".");
1171 MidiInputDevice* pDevice = devices[DeviceIndex];
1172 std::map<String,DeviceCreationParameter*> parameters = pDevice->DeviceParameters();
1173 if (!parameters.count(ParamKey)) throw LinuxSamplerException("MIDI input device " + ToString(DeviceIndex) + " does not have a device parameter '" + ParamKey + "'");
1174 parameters[ParamKey]->SetValue(ParamVal);
1175 }
1176 catch (LinuxSamplerException e) {
1177 result.Error(e);
1178 }
1179 return result.Produce();
1180 }
1181
1182 String LSCPServer::SetMidiInputPortParameter(uint DeviceIndex, uint PortIndex, String ParamKey, String ParamVal) {
1183 dmsg(2,("LSCPServer: SetMidiOutputDeviceParameter(DeviceIndex=%d,ParamKey=%s,ParamVal=%s)\n",DeviceIndex,ParamKey.c_str(),ParamVal.c_str()));
1184 LSCPResultSet result;
1185 try {
1186 // get MIDI input device
1187 std::map<uint,MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
1188 if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(DeviceIndex) + ".");
1189 MidiInputDevice* pDevice = devices[DeviceIndex];
1190
1191 // get MIDI port
1192 MidiInputPort* pMidiInputPort = pDevice->GetPort(PortIndex);
1193 if (!pMidiInputPort) throw LinuxSamplerException("There is no MIDI input port with index " + ToString(PortIndex) + ".");
1194
1195 // set port parameter value
1196 std::map<String,DeviceRuntimeParameter*> parameters = pMidiInputPort->PortParameters();
1197 if (!parameters.count(ParamKey)) throw LinuxSamplerException("MIDI input device " + ToString(PortIndex) + " does not have a parameter '" + ParamKey + "'");
1198 parameters[ParamKey]->SetValue(ParamVal);
1199 }
1200 catch (LinuxSamplerException e) {
1201 result.Error(e);
1202 }
1203 return result.Produce();
1204 }
1205
1206 /**
1207 * Will be called by the parser to change the audio output channel for
1208 * playback on a particular sampler channel.
1209 */
1210 String LSCPServer::SetAudioOutputChannel(uint ChannelAudioOutputChannel, uint AudioOutputDeviceInputChannel, uint uiSamplerChannel) {
1211 dmsg(2,("LSCPServer: SetAudioOutputChannel(ChannelAudioOutputChannel=%d, AudioOutputDeviceInputChannel=%d, SamplerChannel=%d)\n",ChannelAudioOutputChannel,AudioOutputDeviceInputChannel,uiSamplerChannel));
1212 LSCPResultSet result;
1213 try {
1214 SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1215 if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1216 EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
1217 if (!pEngineChannel) throw LinuxSamplerException("No engine type yet assigned to sampler channel " + ToString(uiSamplerChannel));
1218 if (!pSamplerChannel->GetAudioOutputDevice()) throw LinuxSamplerException("No audio output device connected to sampler channel " + ToString(uiSamplerChannel));
1219 pEngineChannel->SetOutputChannel(ChannelAudioOutputChannel, AudioOutputDeviceInputChannel);
1220 }
1221 catch (LinuxSamplerException e) {
1222 result.Error(e);
1223 }
1224 return result.Produce();
1225 }
1226
1227 String LSCPServer::SetAudioOutputDevice(uint AudioDeviceId, uint uiSamplerChannel) {
1228 dmsg(2,("LSCPServer: SetAudiotOutputDevice(AudioDeviceId=%d, SamplerChannel=%d)\n",AudioDeviceId,uiSamplerChannel));
1229 LSCPResultSet result;
1230 try {
1231 SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1232 if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1233 std::map<uint, AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
1234 if (!devices.count(AudioDeviceId)) throw LinuxSamplerException("There is no audio output device with index " + ToString(AudioDeviceId));
1235 AudioOutputDevice* pDevice = devices[AudioDeviceId];
1236 pSamplerChannel->SetAudioOutputDevice(pDevice);
1237 }
1238 catch (LinuxSamplerException e) {
1239 result.Error(e);
1240 }
1241 return result.Produce();
1242 }
1243
1244 String LSCPServer::SetAudioOutputType(String AudioOutputDriver, uint uiSamplerChannel) {
1245 dmsg(2,("LSCPServer: SetAudioOutputType(String AudioOutputDriver=%s, SamplerChannel=%d)\n",AudioOutputDriver.c_str(),uiSamplerChannel));
1246 LSCPResultSet result;
1247 try {
1248 SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1249 if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1250 // Driver type name aliasing...
1251 if (AudioOutputDriver == "Alsa") AudioOutputDriver = "ALSA";
1252 if (AudioOutputDriver == "Jack") AudioOutputDriver = "JACK";
1253 // Check if there's one audio output device already created
1254 // for the intended audio driver type (AudioOutputDriver)...
1255 AudioOutputDevice *pDevice = NULL;
1256 std::map<uint, AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
1257 std::map<uint, AudioOutputDevice*>::iterator iter = devices.begin();
1258 for (; iter != devices.end(); iter++) {
1259 if ((iter->second)->Driver() == AudioOutputDriver) {
1260 pDevice = iter->second;
1261 break;
1262 }
1263 }
1264 // If it doesn't exist, create a new one with default parameters...
1265 if (pDevice == NULL) {
1266 std::map<String,String> params;
1267 pDevice = pSampler->CreateAudioOutputDevice(AudioOutputDriver, params);
1268 }
1269 // Must have a device...
1270 if (pDevice == NULL)
1271 throw LinuxSamplerException("Internal error: could not create audio output device.");
1272 // Set it as the current channel device...
1273 pSamplerChannel->SetAudioOutputDevice(pDevice);
1274 }
1275 catch (LinuxSamplerException e) {
1276 result.Error(e);
1277 }
1278 return result.Produce();
1279 }
1280
1281 String LSCPServer::SetMIDIInputPort(uint MIDIPort, uint uiSamplerChannel) {
1282 dmsg(2,("LSCPServer: SetMIDIInputPort(MIDIPort=%d, SamplerChannel=%d)\n",MIDIPort,uiSamplerChannel));
1283 LSCPResultSet result;
1284 try {
1285 SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1286 if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1287 pSamplerChannel->SetMidiInputPort(MIDIPort);
1288 }
1289 catch (LinuxSamplerException e) {
1290 result.Error(e);
1291 }
1292 return result.Produce();
1293 }
1294
1295 String LSCPServer::SetMIDIInputChannel(uint MIDIChannel, uint uiSamplerChannel) {
1296 dmsg(2,("LSCPServer: SetMIDIInputChannel(MIDIChannel=%d, SamplerChannel=%d)\n",MIDIChannel,uiSamplerChannel));
1297 LSCPResultSet result;
1298 try {
1299 SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1300 if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1301 pSamplerChannel->SetMidiInputChannel((midi_chan_t) MIDIChannel);
1302 }
1303 catch (LinuxSamplerException e) {
1304 result.Error(e);
1305 }
1306 return result.Produce();
1307 }
1308
1309 String LSCPServer::SetMIDIInputDevice(uint MIDIDeviceId, uint uiSamplerChannel) {
1310 dmsg(2,("LSCPServer: SetMIDIInputDevice(MIDIDeviceId=%d, SamplerChannel=%d)\n",MIDIDeviceId,uiSamplerChannel));
1311 LSCPResultSet result;
1312 try {
1313 SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1314 if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1315 std::map<uint, MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
1316 if (!devices.count(MIDIDeviceId)) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(MIDIDeviceId));
1317 MidiInputDevice* pDevice = devices[MIDIDeviceId];
1318 pSamplerChannel->SetMidiInputDevice(pDevice);
1319 }
1320 catch (LinuxSamplerException e) {
1321 result.Error(e);
1322 }
1323 return result.Produce();
1324 }
1325
1326 String LSCPServer::SetMIDIInputType(String MidiInputDriver, uint uiSamplerChannel) {
1327 dmsg(2,("LSCPServer: SetMIDIInputType(String MidiInputDriver=%s, SamplerChannel=%d)\n",MidiInputDriver.c_str(),uiSamplerChannel));
1328 LSCPResultSet result;
1329 try {
1330 SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1331 if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1332 // Driver type name aliasing...
1333 if (MidiInputDriver == "Alsa") MidiInputDriver = "ALSA";
1334 // Check if there's one MIDI input device already created
1335 // for the intended MIDI driver type (MidiInputDriver)...
1336 MidiInputDevice *pDevice = NULL;
1337 std::map<uint, MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
1338 std::map<uint, MidiInputDevice*>::iterator iter = devices.begin();
1339 for (; iter != devices.end(); iter++) {
1340 if ((iter->second)->Driver() == MidiInputDriver) {
1341 pDevice = iter->second;
1342 break;
1343 }
1344 }
1345 // If it doesn't exist, create a new one with default parameters...
1346 if (pDevice == NULL) {
1347 std::map<String,String> params;
1348 pDevice = pSampler->CreateMidiInputDevice(MidiInputDriver, params);
1349 // Make it with at least one initial port.
1350 std::map<String,DeviceCreationParameter*> parameters = pDevice->DeviceParameters();
1351 parameters["PORTS"]->SetValue("1");
1352 }
1353 // Must have a device...
1354 if (pDevice == NULL)
1355 throw LinuxSamplerException("Internal error: could not create MIDI input device.");
1356 // Set it as the current channel device...
1357 pSamplerChannel->SetMidiInputDevice(pDevice);
1358 }
1359 catch (LinuxSamplerException e) {
1360 result.Error(e);
1361 }
1362 return result.Produce();
1363 }
1364
1365 /**
1366 * Will be called by the parser to change the MIDI input device, port and channel on which
1367 * engine of a particular sampler channel should listen to.
1368 */
1369 String LSCPServer::SetMIDIInput(uint MIDIDeviceId, uint MIDIPort, uint MIDIChannel, uint uiSamplerChannel) {
1370 dmsg(2,("LSCPServer: SetMIDIInput(MIDIDeviceId=%d, MIDIPort=%d, MIDIChannel=%d, SamplerChannel=%d)\n", MIDIDeviceId, MIDIPort, MIDIChannel, uiSamplerChannel));
1371 LSCPResultSet result;
1372 try {
1373 SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1374 if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1375 std::map<uint, MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
1376 if (!devices.count(MIDIDeviceId)) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(MIDIDeviceId));
1377 MidiInputDevice* pDevice = devices[MIDIDeviceId];
1378 pSamplerChannel->SetMidiInput(pDevice, MIDIPort, (midi_chan_t) MIDIChannel);
1379 }
1380 catch (LinuxSamplerException e) {
1381 result.Error(e);
1382 }
1383 return result.Produce();
1384 }
1385
1386 /**
1387 * Will be called by the parser to change the global volume factor on a
1388 * particular sampler channel.
1389 */
1390 String LSCPServer::SetVolume(double dVolume, uint uiSamplerChannel) {
1391 dmsg(2,("LSCPServer: SetVolume(Volume=%f, SamplerChannel=%d)\n", dVolume, uiSamplerChannel));
1392 LSCPResultSet result;
1393 try {
1394 SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1395 if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1396 EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
1397 if (!pEngineChannel) throw LinuxSamplerException("No engine type assigned to sampler channel");
1398 pEngineChannel->Volume(dVolume);
1399 }
1400 catch (LinuxSamplerException e) {
1401 result.Error(e);
1402 }
1403 return result.Produce();
1404 }
1405
1406 /**
1407 * Will be called by the parser to mute/unmute particular sampler channel.
1408 */
1409 String LSCPServer::SetChannelMute(bool bMute, uint uiSamplerChannel) {
1410 dmsg(2,("LSCPServer: SetChannelMute(bMute=%d,uiSamplerChannel=%d)\n",bMute,uiSamplerChannel));
1411 LSCPResultSet result;
1412 try {
1413 SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1414 if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1415
1416 EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
1417 if (!pEngineChannel) throw LinuxSamplerException("No engine type assigned to sampler channel");
1418
1419 if(!bMute) pEngineChannel->SetMute((HasSoloChannel() && !pEngineChannel->GetSolo()) ? -1 : 0);
1420 else pEngineChannel->SetMute(1);
1421 } catch (LinuxSamplerException e) {
1422 result.Error(e);
1423 }
1424 return result.Produce();
1425 }
1426
1427 /**
1428 * Will be called by the parser to solo particular sampler channel.
1429 */
1430 String LSCPServer::SetChannelSolo(bool bSolo, uint uiSamplerChannel) {
1431 dmsg(2,("LSCPServer: SetChannelSolo(bSolo=%d,uiSamplerChannel=%d)\n",bSolo,uiSamplerChannel));
1432 LSCPResultSet result;
1433 try {
1434 SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1435 if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1436
1437 EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
1438 if (!pEngineChannel) throw LinuxSamplerException("No engine type assigned to sampler channel");
1439
1440 bool oldSolo = pEngineChannel->GetSolo();
1441 bool hadSoloChannel = HasSoloChannel();
1442
1443 pEngineChannel->SetSolo(bSolo);
1444
1445 if(!oldSolo && bSolo) {
1446 if(pEngineChannel->GetMute() == -1) pEngineChannel->SetMute(0);
1447 if(!hadSoloChannel) MuteNonSoloChannels();
1448 }
1449
1450 if(oldSolo && !bSolo) {
1451 if(!HasSoloChannel()) UnmuteChannels();
1452 else if(!pEngineChannel->GetMute()) pEngineChannel->SetMute(-1);
1453 }
1454 } catch (LinuxSamplerException e) {
1455 result.Error(e);
1456 }
1457 return result.Produce();
1458 }
1459
1460 /**
1461 * Determines whether there is at least one solo channel in the channel list.
1462 *
1463 * @returns true if there is at least one solo channel in the channel list,
1464 * false otherwise.
1465 */
1466 bool LSCPServer::HasSoloChannel() {
1467 std::map<uint,SamplerChannel*> channels = pSampler->GetSamplerChannels();
1468 std::map<uint,SamplerChannel*>::iterator iter = channels.begin();
1469 for (; iter != channels.end(); iter++) {
1470 EngineChannel* c = iter->second->GetEngineChannel();
1471 if(c && c->GetSolo()) return true;
1472 }
1473
1474 return false;
1475 }
1476
1477 /**
1478 * Mutes all unmuted non-solo channels. Notice that the channels are muted
1479 * with -1 which indicates that they are muted because of the presence
1480 * of a solo channel(s). Channels muted with -1 will be automatically unmuted
1481 * when there are no solo channels left.
1482 */
1483 void LSCPServer::MuteNonSoloChannels() {
1484 dmsg(2,("LSCPServer: MuteNonSoloChannels()\n"));
1485 std::map<uint,SamplerChannel*> channels = pSampler->GetSamplerChannels();
1486 std::map<uint,SamplerChannel*>::iterator iter = channels.begin();
1487 for (; iter != channels.end(); iter++) {
1488 EngineChannel* c = iter->second->GetEngineChannel();
1489 if(c && !c->GetSolo() && !c->GetMute()) c->SetMute(-1);
1490 }
1491 }
1492
1493 /**
1494 * Unmutes all channels that are muted because of the presence
1495 * of a solo channel(s).
1496 */
1497 void LSCPServer::UnmuteChannels() {
1498 dmsg(2,("LSCPServer: UnmuteChannels()\n"));
1499 std::map<uint,SamplerChannel*> channels = pSampler->GetSamplerChannels();
1500 std::map<uint,SamplerChannel*>::iterator iter = channels.begin();
1501 for (; iter != channels.end(); iter++) {
1502 EngineChannel* c = iter->second->GetEngineChannel();
1503 if(c && c->GetMute() == -1) c->SetMute(0);
1504 }
1505 }
1506
1507 /**
1508 * Will be called by the parser to reset a particular sampler channel.
1509 */
1510 String LSCPServer::ResetChannel(uint uiSamplerChannel) {
1511 dmsg(2,("LSCPServer: ResetChannel(SamplerChannel=%d)\n", uiSamplerChannel));
1512 LSCPResultSet result;
1513 try {
1514 SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1515 if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1516 EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
1517 if (!pEngineChannel) throw LinuxSamplerException("No engine type assigned to sampler channel");
1518 pEngineChannel->Reset();
1519 }
1520 catch (LinuxSamplerException e) {
1521 result.Error(e);
1522 }
1523 return result.Produce();
1524 }
1525
1526 /**
1527 * Will be called by the parser to reset the whole sampler.
1528 */
1529 String LSCPServer::ResetSampler() {
1530 dmsg(2,("LSCPServer: ResetSampler()\n"));
1531 pSampler->Reset();
1532 LSCPResultSet result;
1533 return result.Produce();
1534 }
1535
1536 /**
1537 * Will be called by the parser to return general informations about this
1538 * sampler.
1539 */
1540 String LSCPServer::GetServerInfo() {
1541 dmsg(2,("LSCPServer: GetServerInfo()\n"));
1542 LSCPResultSet result;
1543 result.Add("DESCRIPTION", "LinuxSampler - modular, streaming capable sampler");
1544 result.Add("VERSION", VERSION);
1545 result.Add("PROTOCOL_VERSION", "1.0");
1546 return result.Produce();
1547 }
1548
1549 /**
1550 * Will be called by the parser to return the current number of all active voices.
1551 */
1552 String LSCPServer::GetTotalVoiceCount() {
1553 dmsg(2,("LSCPServer: GetTotalVoiceCount()\n"));
1554 LSCPResultSet result;
1555 result.Add(pSampler->GetVoiceCount());
1556 return result.Produce();
1557 }
1558
1559 /**
1560 * Will be called by the parser to return the maximum number of voices.
1561 */
1562 String LSCPServer::GetTotalVoiceCountMax() {
1563 dmsg(2,("LSCPServer: GetTotalVoiceCountMax()\n"));
1564 LSCPResultSet result;
1565 result.Add(EngineFactory::EngineInstances().size() * CONFIG_MAX_VOICES);
1566 return result.Produce();
1567 }
1568
1569 /**
1570 * Will be called by the parser to subscribe a client (frontend) on the
1571 * server for receiving event messages.
1572 */
1573 String LSCPServer::SubscribeNotification(LSCPEvent::event_t type) {
1574 dmsg(2,("LSCPServer: SubscribeNotification(Event=%s)\n", LSCPEvent::Name(type).c_str()));
1575 LSCPResultSet result;
1576 SubscriptionMutex.Lock();
1577 eventSubscriptions[type].push_back(currentSocket);
1578 SubscriptionMutex.Unlock();
1579 return result.Produce();
1580 }
1581
1582 /**
1583 * Will be called by the parser to unsubscribe a client on the server
1584 * for not receiving further event messages.
1585 */
1586 String LSCPServer::UnsubscribeNotification(LSCPEvent::event_t type) {
1587 dmsg(2,("LSCPServer: UnsubscribeNotification(Event=%s)\n", LSCPEvent::Name(type).c_str()));
1588 LSCPResultSet result;
1589 SubscriptionMutex.Lock();
1590 eventSubscriptions[type].remove(currentSocket);
1591 SubscriptionMutex.Unlock();
1592 return result.Produce();
1593 }
1594
1595 static int select_callback(void * lscpResultSet, int argc,
1596 char **argv, char **azColName)
1597 {
1598 LSCPResultSet* resultSet = (LSCPResultSet*) lscpResultSet;
1599 resultSet->Add(argc, argv);
1600 return 0;
1601 }
1602
1603 String LSCPServer::QueryDatabase(String query) {
1604 LSCPResultSet result;
1605 #if HAVE_SQLITE3
1606 char* zErrMsg = NULL;
1607 sqlite3 *db;
1608 String selectStr = "SELECT " + query;
1609
1610 int rc = sqlite3_open("linuxsampler.db", &db);
1611 if (rc == SQLITE_OK)
1612 {
1613 rc = sqlite3_exec(db, selectStr.c_str(), select_callback, &result, &zErrMsg);
1614 }
1615 if ( rc != SQLITE_OK )
1616 {
1617 result.Error(String(zErrMsg), rc);
1618 }
1619 sqlite3_close(db);
1620 #else
1621 result.Error(String("SQLITE3 was not installed when linuxsampler was built. SELECT statement is not available."), 0);
1622 #endif
1623 return result.Produce();
1624 }
1625
1626 /**
1627 * Will be called by the parser to enable or disable echo mode; if echo
1628 * mode is enabled, all commands from the client will (immediately) be
1629 * echoed back to the client.
1630 */
1631 String LSCPServer::SetEcho(yyparse_param_t* pSession, double boolean_value) {
1632 dmsg(2,("LSCPServer: SetEcho(val=%f)\n", boolean_value));
1633 LSCPResultSet result;
1634 try {
1635 if (boolean_value == 0) pSession->bVerbose = false;
1636 else if (boolean_value == 1) pSession->bVerbose = true;
1637 else throw LinuxSamplerException("Not a boolean value, must either be 0 or 1");
1638 }
1639 catch (LinuxSamplerException e) {
1640 result.Error(e);
1641 }
1642 return result.Produce();
1643 }

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