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

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Revision 907 - (show annotations) (download)
Fri Jul 28 21:35:06 2006 UTC (14 years, 4 months ago) by iliev
File size: 69233 byte(s)
* Commands returned by LinuxSampler in echo mode
are now terminated with <CR><LF> instead of <LF>

1 /***************************************************************************
2 * *
3 * LinuxSampler - modular, streaming capable sampler *
4 * *
5 * Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck *
6 * Copyright (C) 2005, 2006 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 timeval timeout;
132
133 while (true) {
134 // check if some engine channel's parameter / status changed, if so notify the respective LSCP event subscribers
135 {
136 std::set<EngineChannel*> engineChannels = EngineChannelFactory::EngineChannelInstances();
137 std::set<EngineChannel*>::iterator itEngineChannel = engineChannels.begin();
138 std::set<EngineChannel*>::iterator itEnd = engineChannels.end();
139 for (; itEngineChannel != itEnd; ++itEngineChannel) {
140 if ((*itEngineChannel)->StatusChanged()) {
141 SendLSCPNotify(LSCPEvent(LSCPEvent::event_channel_info, (*itEngineChannel)->iSamplerChannelIndex));
142 }
143 }
144 }
145
146 //Now let's deliver late notifies (if any)
147 NotifyBufferMutex.Lock();
148 for (std::map<int,String>::iterator iterNotify = bufferedNotifies.begin(); iterNotify != bufferedNotifies.end(); iterNotify++) {
149 #ifdef MSG_NOSIGNAL
150 send(iterNotify->first, iterNotify->second.c_str(), iterNotify->second.size(), MSG_NOSIGNAL);
151 #else
152 send(iterNotify->first, iterNotify->second.c_str(), iterNotify->second.size(), 0);
153 #endif
154 }
155 bufferedNotifies.clear();
156 NotifyBufferMutex.Unlock();
157
158 fd_set selectSet = fdSet;
159 timeout.tv_sec = 0;
160 timeout.tv_usec = 100000;
161
162 int retval = select(maxSessions+1, &selectSet, NULL, NULL, &timeout);
163
164 if (retval == 0)
165 continue; //Nothing try again
166 if (retval == -1) {
167 std::cerr << "LSCPServer: Socket select error." << std::endl;
168 close(hSocket);
169 exit(EXIT_FAILURE);
170 }
171
172 //Accept new connections now (if any)
173 if (FD_ISSET(hSocket, &selectSet)) {
174 int socket = accept(hSocket, (sockaddr*) &client, (socklen_t*) &length);
175 if (socket < 0) {
176 std::cerr << "LSCPServer: Client connection failed." << std::endl;
177 exit(EXIT_FAILURE);
178 }
179
180 if (fcntl(socket, F_SETFL, O_NONBLOCK)) {
181 std::cerr << "LSCPServer: F_SETFL O_NONBLOCK failed." << std::endl;
182 exit(EXIT_FAILURE);
183 }
184
185 // Parser initialization
186 yyparse_param_t yyparse_param;
187 yyparse_param.pServer = this;
188 yyparse_param.hSession = socket;
189
190 Sessions.push_back(yyparse_param);
191 FD_SET(socket, &fdSet);
192 if (socket > maxSessions)
193 maxSessions = socket;
194 dmsg(1,("LSCPServer: Client connection established on socket:%d.\n", socket));
195 LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_misc, "Client connection established on socket", socket));
196 continue; //Maybe this was the only selected socket, better select again
197 }
198
199 //Something was selected and it was not the hSocket, so it must be some command(s) coming.
200 for (std::vector<yyparse_param_t>::iterator iter = Sessions.begin(); iter != Sessions.end(); iter++) {
201 if (FD_ISSET((*iter).hSession, &selectSet)) { //Was it this socket?
202 if (GetLSCPCommand(iter)) { //Have we read the entire command?
203 dmsg(3,("LSCPServer: Got command on socket %d, calling parser.\n", currentSocket));
204 int dummy; // just a temporary hack to fulfill the restart() function prototype
205 restart(NULL, dummy); // restart the 'scanner'
206 currentSocket = (*iter).hSession; //a hack
207 dmsg(2,("LSCPServer: [%s]\n",bufferedCommands[currentSocket].c_str()));
208 if ((*iter).bVerbose) { // if echo mode enabled
209 AnswerClient(bufferedCommands[currentSocket]);
210 }
211 int result = yyparse(&(*iter));
212 currentSocket = -1; //continuation of a hack
213 dmsg(3,("LSCPServer: Done parsing on socket %d.\n", currentSocket));
214 if (result == LSCP_QUIT) { //Was it a quit command by any chance?
215 CloseConnection(iter);
216 }
217 }
218 //socket may have been closed, iter may be invalid, get out of the loop for now.
219 //we'll be back if there is data.
220 break;
221 }
222 }
223 }
224 }
225
226 void LSCPServer::CloseConnection( std::vector<yyparse_param_t>::iterator iter ) {
227 int socket = (*iter).hSession;
228 dmsg(1,("LSCPServer: Client connection terminated on socket:%d.\n",socket));
229 LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_misc, "Client connection terminated on socket", socket));
230 Sessions.erase(iter);
231 FD_CLR(socket, &fdSet);
232 SubscriptionMutex.Lock(); //Must unsubscribe this socket from all events (if any)
233 for (std::map< LSCPEvent::event_t, std::list<int> >::iterator iter = eventSubscriptions.begin(); iter != eventSubscriptions.end(); iter++) {
234 iter->second.remove(socket);
235 }
236 SubscriptionMutex.Unlock();
237 NotifyMutex.Lock();
238 bufferedCommands.erase(socket);
239 bufferedNotifies.erase(socket);
240 close(socket);
241 NotifyMutex.Unlock();
242 }
243
244 int LSCPServer::EventSubscribers( std::list<LSCPEvent::event_t> events ) {
245 int subs = 0;
246 SubscriptionMutex.Lock();
247 for( std::list<LSCPEvent::event_t>::iterator iter = events.begin();
248 iter != events.end(); iter++)
249 {
250 subs += eventSubscriptions.count(*iter);
251 }
252 SubscriptionMutex.Unlock();
253 return subs;
254 }
255
256 void LSCPServer::SendLSCPNotify( LSCPEvent event ) {
257 SubscriptionMutex.Lock();
258 if (eventSubscriptions.count(event.GetType()) == 0) {
259 SubscriptionMutex.Unlock(); //Nobody is subscribed to this event
260 return;
261 }
262 std::list<int>::iterator iter = eventSubscriptions[event.GetType()].begin();
263 std::list<int>::iterator end = eventSubscriptions[event.GetType()].end();
264 String notify = event.Produce();
265
266 while (true) {
267 if (NotifyMutex.Trylock()) {
268 for(;iter != end; iter++)
269 #ifdef MSG_NOSIGNAL
270 send(*iter, notify.c_str(), notify.size(), MSG_NOSIGNAL);
271 #else
272 send(*iter, notify.c_str(), notify.size(), 0);
273 #endif
274 NotifyMutex.Unlock();
275 break;
276 } else {
277 if (NotifyBufferMutex.Trylock()) {
278 for(;iter != end; iter++)
279 bufferedNotifies[*iter] += notify;
280 NotifyBufferMutex.Unlock();
281 break;
282 }
283 }
284 }
285 SubscriptionMutex.Unlock();
286 }
287
288 extern int GetLSCPCommand( void *buf, int max_size ) {
289 String command = LSCPServer::bufferedCommands[LSCPServer::currentSocket];
290 if (command.size() == 0) { //Parser wants input but we have nothing.
291 strcpy((char*) buf, "\n"); //So give it an empty command
292 return 1; //to keep it happy.
293 }
294
295 if (max_size < command.size()) {
296 std::cerr << "getLSCPCommand: Flex buffer too small, ignoring the command." << std::endl;
297 return 0; //This will never happen
298 }
299
300 strcpy((char*) buf, command.c_str());
301 LSCPServer::bufferedCommands.erase(LSCPServer::currentSocket);
302 return command.size();
303 }
304
305 /**
306 * Will be called to try to read the command from the socket
307 * If command is read, it will return true. Otherwise false is returned.
308 * In any case the received portion (complete or incomplete) is saved into bufferedCommand map.
309 */
310 bool LSCPServer::GetLSCPCommand( std::vector<yyparse_param_t>::iterator iter ) {
311 int socket = (*iter).hSession;
312 char c;
313 int i = 0;
314 while (true) {
315 int result = recv(socket, (void *)&c, 1, 0); //Read one character at a time for now
316 if (result == 0) { //socket was selected, so 0 here means client has closed the connection
317 CloseConnection(iter);
318 break;
319 }
320 if (result == 1) {
321 if (c == '\r')
322 continue; //Ignore CR
323 if (c == '\n') {
324 LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_misc, "Received \'" + bufferedCommands[socket] + "\' on socket", socket));
325 bufferedCommands[socket] += "\r\n";
326 return true; //Complete command was read
327 }
328 bufferedCommands[socket] += c;
329 }
330 if (result == -1) {
331 if (errno == EAGAIN) //Would block, try again later.
332 return false;
333 switch(errno) {
334 case EBADF:
335 dmsg(2,("LSCPScanner: The argument s is an invalid descriptor.\n"));
336 break;
337 case ECONNREFUSED:
338 dmsg(2,("LSCPScanner: A remote host refused to allow the network connection (typically because it is not running the requested service).\n"));
339 break;
340 case ENOTCONN:
341 dmsg(2,("LSCPScanner: The socket is associated with a connection-oriented protocol and has not been connected (see connect(2) and accept(2)).\n"));
342 break;
343 case ENOTSOCK:
344 dmsg(2,("LSCPScanner: The argument s does not refer to a socket.\n"));
345 break;
346 case EAGAIN:
347 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"));
348 break;
349 case EINTR:
350 dmsg(2,("LSCPScanner: The receive was interrupted by delivery of a signal before any data were available.\n"));
351 break;
352 case EFAULT:
353 dmsg(2,("LSCPScanner: The receive buffer pointer(s) point outside the process's address space.\n"));
354 break;
355 case EINVAL:
356 dmsg(2,("LSCPScanner: Invalid argument passed.\n"));
357 break;
358 case ENOMEM:
359 dmsg(2,("LSCPScanner: Could not allocate memory for recvmsg.\n"));
360 break;
361 default:
362 dmsg(2,("LSCPScanner: Unknown recv() error.\n"));
363 break;
364 }
365 CloseConnection(iter);
366 break;
367 }
368 }
369 return false;
370 }
371
372 /**
373 * Will be called by the parser whenever it wants to send an answer to the
374 * client / frontend.
375 *
376 * @param ReturnMessage - message that will be send to the client
377 */
378 void LSCPServer::AnswerClient(String ReturnMessage) {
379 dmsg(2,("LSCPServer::AnswerClient(ReturnMessage=%s)", ReturnMessage.c_str()));
380 if (currentSocket != -1) {
381 NotifyMutex.Lock();
382 #ifdef MSG_NOSIGNAL
383 send(currentSocket, ReturnMessage.c_str(), ReturnMessage.size(), MSG_NOSIGNAL);
384 #else
385 send(currentSocket, ReturnMessage.c_str(), ReturnMessage.size(), 0);
386 #endif
387 NotifyMutex.Unlock();
388 }
389 }
390
391 /**
392 * Find a created audio output device index.
393 */
394 int LSCPServer::GetAudioOutputDeviceIndex ( AudioOutputDevice *pDevice )
395 {
396 // Search for the created device to get its index
397 std::map<uint, AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
398 std::map<uint, AudioOutputDevice*>::iterator iter = devices.begin();
399 for (; iter != devices.end(); iter++) {
400 if (iter->second == pDevice)
401 return iter->first;
402 }
403 // Not found.
404 return -1;
405 }
406
407 /**
408 * Find a created midi input device index.
409 */
410 int LSCPServer::GetMidiInputDeviceIndex ( MidiInputDevice *pDevice )
411 {
412 // Search for the created device to get its index
413 std::map<uint, MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
414 std::map<uint, MidiInputDevice*>::iterator iter = devices.begin();
415 for (; iter != devices.end(); iter++) {
416 if (iter->second == pDevice)
417 return iter->first;
418 }
419 // Not found.
420 return -1;
421 }
422
423 String LSCPServer::CreateAudioOutputDevice(String Driver, std::map<String,String> Parameters) {
424 dmsg(2,("LSCPServer: CreateAudioOutputDevice(Driver=%s)\n", Driver.c_str()));
425 LSCPResultSet result;
426 try {
427 AudioOutputDevice* pDevice = pSampler->CreateAudioOutputDevice(Driver, Parameters);
428 // search for the created device to get its index
429 int index = GetAudioOutputDeviceIndex(pDevice);
430 if (index == -1) throw Exception("Internal error: could not find created audio output device.");
431 result = index; // success
432 }
433 catch (Exception e) {
434 result.Error(e);
435 }
436 return result.Produce();
437 }
438
439 String LSCPServer::CreateMidiInputDevice(String Driver, std::map<String,String> Parameters) {
440 dmsg(2,("LSCPServer: CreateMidiInputDevice(Driver=%s)\n", Driver.c_str()));
441 LSCPResultSet result;
442 try {
443 MidiInputDevice* pDevice = pSampler->CreateMidiInputDevice(Driver, Parameters);
444 // search for the created device to get its index
445 int index = GetMidiInputDeviceIndex(pDevice);
446 if (index == -1) throw Exception("Internal error: could not find created midi input device.");
447 result = index; // success
448 }
449 catch (Exception e) {
450 result.Error(e);
451 }
452 return result.Produce();
453 }
454
455 String LSCPServer::DestroyAudioOutputDevice(uint DeviceIndex) {
456 dmsg(2,("LSCPServer: DestroyAudioOutputDevice(DeviceIndex=%d)\n", DeviceIndex));
457 LSCPResultSet result;
458 try {
459 std::map<uint, AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
460 if (!devices.count(DeviceIndex)) throw Exception("There is no audio output device with index " + ToString(DeviceIndex) + ".");
461 AudioOutputDevice* pDevice = devices[DeviceIndex];
462 pSampler->DestroyAudioOutputDevice(pDevice);
463 }
464 catch (Exception e) {
465 result.Error(e);
466 }
467 return result.Produce();
468 }
469
470 String LSCPServer::DestroyMidiInputDevice(uint DeviceIndex) {
471 dmsg(2,("LSCPServer: DestroyMidiInputDevice(DeviceIndex=%d)\n", DeviceIndex));
472 LSCPResultSet result;
473 try {
474 std::map<uint, MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
475 if (!devices.count(DeviceIndex)) throw Exception("There is no audio output device with index " + ToString(DeviceIndex) + ".");
476 MidiInputDevice* pDevice = devices[DeviceIndex];
477 pSampler->DestroyMidiInputDevice(pDevice);
478 }
479 catch (Exception e) {
480 result.Error(e);
481 }
482 return result.Produce();
483 }
484
485 /**
486 * Will be called by the parser to load an instrument.
487 */
488 String LSCPServer::LoadInstrument(String Filename, uint uiInstrument, uint uiSamplerChannel, bool bBackground) {
489 dmsg(2,("LSCPServer: LoadInstrument(Filename=%s,Instrument=%d,SamplerChannel=%d)\n", Filename.c_str(), uiInstrument, uiSamplerChannel));
490 LSCPResultSet result;
491 try {
492 SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
493 if (!pSamplerChannel) throw Exception("Invalid sampler channel number " + ToString(uiSamplerChannel));
494 EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
495 if (!pEngineChannel) throw Exception("No engine type assigned to sampler channel yet");
496 if (!pSamplerChannel->GetAudioOutputDevice())
497 throw Exception("No audio output device connected to sampler channel");
498 if (bBackground) {
499 InstrumentLoader.StartNewLoad(Filename, uiInstrument, pEngineChannel);
500 }
501 else {
502 // tell the engine channel which instrument to load
503 pEngineChannel->PrepareLoadInstrument(Filename.c_str(), uiInstrument);
504 // actually start to load the instrument (blocks until completed)
505 pEngineChannel->LoadInstrument();
506 }
507 }
508 catch (Exception e) {
509 result.Error(e);
510 }
511 return result.Produce();
512 }
513
514 /**
515 * Will be called by the parser to assign a sampler engine type to a
516 * sampler channel.
517 */
518 String LSCPServer::SetEngineType(String EngineName, uint uiSamplerChannel) {
519 dmsg(2,("LSCPServer: SetEngineType(EngineName=%s,uiSamplerChannel=%d)\n", EngineName.c_str(), uiSamplerChannel));
520 LSCPResultSet result;
521 try {
522 SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
523 if (!pSamplerChannel) throw Exception("Invalid sampler channel number " + ToString(uiSamplerChannel));
524 LockRTNotify();
525 pSamplerChannel->SetEngineType(EngineName);
526 if(HasSoloChannel()) pSamplerChannel->GetEngineChannel()->SetMute(-1);
527 UnlockRTNotify();
528 }
529 catch (Exception e) {
530 result.Error(e);
531 }
532 return result.Produce();
533 }
534
535 /**
536 * Will be called by the parser to get the amount of sampler channels.
537 */
538 String LSCPServer::GetChannels() {
539 dmsg(2,("LSCPServer: GetChannels()\n"));
540 LSCPResultSet result;
541 result.Add(pSampler->SamplerChannels());
542 return result.Produce();
543 }
544
545 /**
546 * Will be called by the parser to get the list of sampler channels.
547 */
548 String LSCPServer::ListChannels() {
549 dmsg(2,("LSCPServer: ListChannels()\n"));
550 String list;
551 std::map<uint,SamplerChannel*> channels = pSampler->GetSamplerChannels();
552 std::map<uint,SamplerChannel*>::iterator iter = channels.begin();
553 for (; iter != channels.end(); iter++) {
554 if (list != "") list += ",";
555 list += ToString(iter->first);
556 }
557 LSCPResultSet result;
558 result.Add(list);
559 return result.Produce();
560 }
561
562 /**
563 * Will be called by the parser to add a sampler channel.
564 */
565 String LSCPServer::AddChannel() {
566 dmsg(2,("LSCPServer: AddChannel()\n"));
567 LockRTNotify();
568 SamplerChannel* pSamplerChannel = pSampler->AddSamplerChannel();
569 UnlockRTNotify();
570 LSCPResultSet result(pSamplerChannel->Index());
571 return result.Produce();
572 }
573
574 /**
575 * Will be called by the parser to remove a sampler channel.
576 */
577 String LSCPServer::RemoveChannel(uint uiSamplerChannel) {
578 dmsg(2,("LSCPServer: RemoveChannel(SamplerChannel=%d)\n", uiSamplerChannel));
579 LSCPResultSet result;
580 LockRTNotify();
581 pSampler->RemoveSamplerChannel(uiSamplerChannel);
582 UnlockRTNotify();
583 return result.Produce();
584 }
585
586 /**
587 * Will be called by the parser to get the amount of all available engines.
588 */
589 String LSCPServer::GetAvailableEngines() {
590 dmsg(2,("LSCPServer: GetAvailableEngines()\n"));
591 LSCPResultSet result;
592 try {
593 int n = EngineFactory::AvailableEngineTypes().size();
594 result.Add(n);
595 }
596 catch (Exception e) {
597 result.Error(e);
598 }
599 return result.Produce();
600 }
601
602 /**
603 * Will be called by the parser to get a list of all available engines.
604 */
605 String LSCPServer::ListAvailableEngines() {
606 dmsg(2,("LSCPServer: ListAvailableEngines()\n"));
607 LSCPResultSet result;
608 try {
609 String s = EngineFactory::AvailableEngineTypesAsString();
610 result.Add(s);
611 }
612 catch (Exception e) {
613 result.Error(e);
614 }
615 return result.Produce();
616 }
617
618 /**
619 * Will be called by the parser to get descriptions for a particular
620 * sampler engine.
621 */
622 String LSCPServer::GetEngineInfo(String EngineName) {
623 dmsg(2,("LSCPServer: GetEngineInfo(EngineName=%s)\n", EngineName.c_str()));
624 LSCPResultSet result;
625 LockRTNotify();
626 try {
627 Engine* pEngine = EngineFactory::Create(EngineName);
628 result.Add("DESCRIPTION", pEngine->Description());
629 result.Add("VERSION", pEngine->Version());
630 EngineFactory::Destroy(pEngine);
631 }
632 catch (Exception e) {
633 result.Error(e);
634 }
635 UnlockRTNotify();
636 return result.Produce();
637 }
638
639 /**
640 * Will be called by the parser to get informations about a particular
641 * sampler channel.
642 */
643 String LSCPServer::GetChannelInfo(uint uiSamplerChannel) {
644 dmsg(2,("LSCPServer: GetChannelInfo(SamplerChannel=%d)\n", uiSamplerChannel));
645 LSCPResultSet result;
646 try {
647 SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
648 if (!pSamplerChannel) throw Exception("Invalid sampler channel number " + ToString(uiSamplerChannel));
649 EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
650
651 //Defaults values
652 String EngineName = "NONE";
653 float Volume = 0.0f;
654 String InstrumentFileName = "NONE";
655 String InstrumentName = "NONE";
656 int InstrumentIndex = -1;
657 int InstrumentStatus = -1;
658 int AudioOutputChannels = 0;
659 String AudioRouting;
660 int Mute = 0;
661 bool Solo = false;
662
663 if (pEngineChannel) {
664 EngineName = pEngineChannel->EngineName();
665 AudioOutputChannels = pEngineChannel->Channels();
666 Volume = pEngineChannel->Volume();
667 InstrumentStatus = pEngineChannel->InstrumentStatus();
668 InstrumentIndex = pEngineChannel->InstrumentIndex();
669 if (InstrumentIndex != -1) {
670 InstrumentFileName = pEngineChannel->InstrumentFileName();
671 InstrumentName = pEngineChannel->InstrumentName();
672 }
673 for (int chan = 0; chan < pEngineChannel->Channels(); chan++) {
674 if (AudioRouting != "") AudioRouting += ",";
675 AudioRouting += ToString(pEngineChannel->OutputChannel(chan));
676 }
677 Mute = pEngineChannel->GetMute();
678 Solo = pEngineChannel->GetSolo();
679 }
680
681 result.Add("ENGINE_NAME", EngineName);
682 result.Add("VOLUME", Volume);
683
684 //Some not-so-hardcoded stuff to make GUI look good
685 result.Add("AUDIO_OUTPUT_DEVICE", GetAudioOutputDeviceIndex(pSamplerChannel->GetAudioOutputDevice()));
686 result.Add("AUDIO_OUTPUT_CHANNELS", AudioOutputChannels);
687 result.Add("AUDIO_OUTPUT_ROUTING", AudioRouting);
688
689 result.Add("MIDI_INPUT_DEVICE", GetMidiInputDeviceIndex(pSamplerChannel->GetMidiInputDevice()));
690 result.Add("MIDI_INPUT_PORT", pSamplerChannel->GetMidiInputPort());
691 if (pSamplerChannel->GetMidiInputChannel() == midi_chan_all) result.Add("MIDI_INPUT_CHANNEL", "ALL");
692 else result.Add("MIDI_INPUT_CHANNEL", pSamplerChannel->GetMidiInputChannel());
693
694 result.Add("INSTRUMENT_FILE", InstrumentFileName);
695 result.Add("INSTRUMENT_NR", InstrumentIndex);
696 result.Add("INSTRUMENT_NAME", InstrumentName);
697 result.Add("INSTRUMENT_STATUS", InstrumentStatus);
698 result.Add("MUTE", Mute == -1 ? "MUTED_BY_SOLO" : (Mute ? "true" : "false"));
699 result.Add("SOLO", Solo);
700 }
701 catch (Exception e) {
702 result.Error(e);
703 }
704 return result.Produce();
705 }
706
707 /**
708 * Will be called by the parser to get the amount of active voices on a
709 * particular sampler channel.
710 */
711 String LSCPServer::GetVoiceCount(uint uiSamplerChannel) {
712 dmsg(2,("LSCPServer: GetVoiceCount(SamplerChannel=%d)\n", uiSamplerChannel));
713 LSCPResultSet result;
714 try {
715 SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
716 if (!pSamplerChannel) throw Exception("Invalid sampler channel number " + ToString(uiSamplerChannel));
717 EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
718 if (!pEngineChannel) throw Exception("No engine loaded on sampler channel");
719 if (!pEngineChannel->GetEngine()) throw Exception("No audio output device connected to sampler channel");
720 result.Add(pEngineChannel->GetEngine()->VoiceCount());
721 }
722 catch (Exception e) {
723 result.Error(e);
724 }
725 return result.Produce();
726 }
727
728 /**
729 * Will be called by the parser to get the amount of active disk streams on a
730 * particular sampler channel.
731 */
732 String LSCPServer::GetStreamCount(uint uiSamplerChannel) {
733 dmsg(2,("LSCPServer: GetStreamCount(SamplerChannel=%d)\n", uiSamplerChannel));
734 LSCPResultSet result;
735 try {
736 SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
737 if (!pSamplerChannel) throw Exception("Invalid sampler channel number " + ToString(uiSamplerChannel));
738 EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
739 if (!pEngineChannel) throw Exception("No engine type assigned to sampler channel");
740 if (!pEngineChannel->GetEngine()) throw Exception("No audio output device connected to sampler channel");
741 result.Add(pEngineChannel->GetEngine()->DiskStreamCount());
742 }
743 catch (Exception e) {
744 result.Error(e);
745 }
746 return result.Produce();
747 }
748
749 /**
750 * Will be called by the parser to get the buffer fill states of all disk
751 * streams on a particular sampler channel.
752 */
753 String LSCPServer::GetBufferFill(fill_response_t ResponseType, uint uiSamplerChannel) {
754 dmsg(2,("LSCPServer: GetBufferFill(ResponseType=%d, SamplerChannel=%d)\n", ResponseType, uiSamplerChannel));
755 LSCPResultSet result;
756 try {
757 SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
758 if (!pSamplerChannel) throw Exception("Invalid sampler channel number " + ToString(uiSamplerChannel));
759 EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
760 if (!pEngineChannel) throw Exception("No engine type assigned to sampler channel");
761 if (!pEngineChannel->GetEngine()) throw Exception("No audio output device connected to sampler channel");
762 if (!pEngineChannel->GetEngine()->DiskStreamSupported()) result.Add("NA");
763 else {
764 switch (ResponseType) {
765 case fill_response_bytes:
766 result.Add(pEngineChannel->GetEngine()->DiskStreamBufferFillBytes());
767 break;
768 case fill_response_percentage:
769 result.Add(pEngineChannel->GetEngine()->DiskStreamBufferFillPercentage());
770 break;
771 default:
772 throw Exception("Unknown fill response type");
773 }
774 }
775 }
776 catch (Exception e) {
777 result.Error(e);
778 }
779 return result.Produce();
780 }
781
782 String LSCPServer::GetAvailableAudioOutputDrivers() {
783 dmsg(2,("LSCPServer: GetAvailableAudioOutputDrivers()\n"));
784 LSCPResultSet result;
785 try {
786 int n = AudioOutputDeviceFactory::AvailableDrivers().size();
787 result.Add(n);
788 }
789 catch (Exception e) {
790 result.Error(e);
791 }
792 return result.Produce();
793 }
794
795 String LSCPServer::ListAvailableAudioOutputDrivers() {
796 dmsg(2,("LSCPServer: ListAvailableAudioOutputDrivers()\n"));
797 LSCPResultSet result;
798 try {
799 String s = AudioOutputDeviceFactory::AvailableDriversAsString();
800 result.Add(s);
801 }
802 catch (Exception e) {
803 result.Error(e);
804 }
805 return result.Produce();
806 }
807
808 String LSCPServer::GetAvailableMidiInputDrivers() {
809 dmsg(2,("LSCPServer: GetAvailableMidiInputDrivers()\n"));
810 LSCPResultSet result;
811 try {
812 int n = MidiInputDeviceFactory::AvailableDrivers().size();
813 result.Add(n);
814 }
815 catch (Exception e) {
816 result.Error(e);
817 }
818 return result.Produce();
819 }
820
821 String LSCPServer::ListAvailableMidiInputDrivers() {
822 dmsg(2,("LSCPServer: ListAvailableMidiInputDrivers()\n"));
823 LSCPResultSet result;
824 try {
825 String s = MidiInputDeviceFactory::AvailableDriversAsString();
826 result.Add(s);
827 }
828 catch (Exception e) {
829 result.Error(e);
830 }
831 return result.Produce();
832 }
833
834 String LSCPServer::GetMidiInputDriverInfo(String Driver) {
835 dmsg(2,("LSCPServer: GetMidiInputDriverInfo(Driver=%s)\n",Driver.c_str()));
836 LSCPResultSet result;
837 try {
838 result.Add("DESCRIPTION", MidiInputDeviceFactory::GetDriverDescription(Driver));
839 result.Add("VERSION", MidiInputDeviceFactory::GetDriverVersion(Driver));
840
841 std::map<String,DeviceCreationParameter*> parameters = MidiInputDeviceFactory::GetAvailableDriverParameters(Driver);
842 if (parameters.size()) { // if there are parameters defined for this driver
843 String s;
844 std::map<String,DeviceCreationParameter*>::iterator iter = parameters.begin();
845 for (;iter != parameters.end(); iter++) {
846 if (s != "") s += ",";
847 s += iter->first;
848 }
849 result.Add("PARAMETERS", s);
850 }
851 }
852 catch (Exception e) {
853 result.Error(e);
854 }
855 return result.Produce();
856 }
857
858 String LSCPServer::GetAudioOutputDriverInfo(String Driver) {
859 dmsg(2,("LSCPServer: GetAudioOutputDriverInfo(Driver=%s)\n",Driver.c_str()));
860 LSCPResultSet result;
861 try {
862 result.Add("DESCRIPTION", AudioOutputDeviceFactory::GetDriverDescription(Driver));
863 result.Add("VERSION", AudioOutputDeviceFactory::GetDriverVersion(Driver));
864
865 std::map<String,DeviceCreationParameter*> parameters = AudioOutputDeviceFactory::GetAvailableDriverParameters(Driver);
866 if (parameters.size()) { // if there are parameters defined for this driver
867 String s;
868 std::map<String,DeviceCreationParameter*>::iterator iter = parameters.begin();
869 for (;iter != parameters.end(); iter++) {
870 if (s != "") s += ",";
871 s += iter->first;
872 }
873 result.Add("PARAMETERS", s);
874 }
875 }
876 catch (Exception e) {
877 result.Error(e);
878 }
879 return result.Produce();
880 }
881
882 String LSCPServer::GetMidiInputDriverParameterInfo(String Driver, String Parameter, std::map<String,String> DependencyList) {
883 dmsg(2,("LSCPServer: GetMidiInputDriverParameterInfo(Driver=%s,Parameter=%s,DependencyListSize=%d)\n",Driver.c_str(),Parameter.c_str(),DependencyList.size()));
884 LSCPResultSet result;
885 try {
886 DeviceCreationParameter* pParameter = MidiInputDeviceFactory::GetDriverParameter(Driver, Parameter);
887 result.Add("TYPE", pParameter->Type());
888 result.Add("DESCRIPTION", pParameter->Description());
889 result.Add("MANDATORY", pParameter->Mandatory());
890 result.Add("FIX", pParameter->Fix());
891 result.Add("MULTIPLICITY", pParameter->Multiplicity());
892 optional<String> oDepends = pParameter->Depends();
893 optional<String> oDefault = pParameter->Default(DependencyList);
894 optional<String> oRangeMin = pParameter->RangeMin(DependencyList);
895 optional<String> oRangeMax = pParameter->RangeMax(DependencyList);
896 optional<String> oPossibilities = pParameter->Possibilities(DependencyList);
897 if (oDepends) result.Add("DEPENDS", *oDepends);
898 if (oDefault) result.Add("DEFAULT", *oDefault);
899 if (oRangeMin) result.Add("RANGE_MIN", *oRangeMin);
900 if (oRangeMax) result.Add("RANGE_MAX", *oRangeMax);
901 if (oPossibilities) result.Add("POSSIBILITIES", *oPossibilities);
902 }
903 catch (Exception e) {
904 result.Error(e);
905 }
906 return result.Produce();
907 }
908
909 String LSCPServer::GetAudioOutputDriverParameterInfo(String Driver, String Parameter, std::map<String,String> DependencyList) {
910 dmsg(2,("LSCPServer: GetAudioOutputDriverParameterInfo(Driver=%s,Parameter=%s,DependencyListSize=%d)\n",Driver.c_str(),Parameter.c_str(),DependencyList.size()));
911 LSCPResultSet result;
912 try {
913 DeviceCreationParameter* pParameter = AudioOutputDeviceFactory::GetDriverParameter(Driver, Parameter);
914 result.Add("TYPE", pParameter->Type());
915 result.Add("DESCRIPTION", pParameter->Description());
916 result.Add("MANDATORY", pParameter->Mandatory());
917 result.Add("FIX", pParameter->Fix());
918 result.Add("MULTIPLICITY", pParameter->Multiplicity());
919 optional<String> oDepends = pParameter->Depends();
920 optional<String> oDefault = pParameter->Default(DependencyList);
921 optional<String> oRangeMin = pParameter->RangeMin(DependencyList);
922 optional<String> oRangeMax = pParameter->RangeMax(DependencyList);
923 optional<String> oPossibilities = pParameter->Possibilities(DependencyList);
924 if (oDepends) result.Add("DEPENDS", *oDepends);
925 if (oDefault) result.Add("DEFAULT", *oDefault);
926 if (oRangeMin) result.Add("RANGE_MIN", *oRangeMin);
927 if (oRangeMax) result.Add("RANGE_MAX", *oRangeMax);
928 if (oPossibilities) result.Add("POSSIBILITIES", *oPossibilities);
929 }
930 catch (Exception e) {
931 result.Error(e);
932 }
933 return result.Produce();
934 }
935
936 String LSCPServer::GetAudioOutputDeviceCount() {
937 dmsg(2,("LSCPServer: GetAudioOutputDeviceCount()\n"));
938 LSCPResultSet result;
939 try {
940 uint count = pSampler->AudioOutputDevices();
941 result.Add(count); // success
942 }
943 catch (Exception e) {
944 result.Error(e);
945 }
946 return result.Produce();
947 }
948
949 String LSCPServer::GetMidiInputDeviceCount() {
950 dmsg(2,("LSCPServer: GetMidiInputDeviceCount()\n"));
951 LSCPResultSet result;
952 try {
953 uint count = pSampler->MidiInputDevices();
954 result.Add(count); // success
955 }
956 catch (Exception e) {
957 result.Error(e);
958 }
959 return result.Produce();
960 }
961
962 String LSCPServer::GetAudioOutputDevices() {
963 dmsg(2,("LSCPServer: GetAudioOutputDevices()\n"));
964 LSCPResultSet result;
965 try {
966 String s;
967 std::map<uint, AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
968 std::map<uint, AudioOutputDevice*>::iterator iter = devices.begin();
969 for (; iter != devices.end(); iter++) {
970 if (s != "") s += ",";
971 s += ToString(iter->first);
972 }
973 result.Add(s);
974 }
975 catch (Exception e) {
976 result.Error(e);
977 }
978 return result.Produce();
979 }
980
981 String LSCPServer::GetMidiInputDevices() {
982 dmsg(2,("LSCPServer: GetMidiInputDevices()\n"));
983 LSCPResultSet result;
984 try {
985 String s;
986 std::map<uint, MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
987 std::map<uint, MidiInputDevice*>::iterator iter = devices.begin();
988 for (; iter != devices.end(); iter++) {
989 if (s != "") s += ",";
990 s += ToString(iter->first);
991 }
992 result.Add(s);
993 }
994 catch (Exception e) {
995 result.Error(e);
996 }
997 return result.Produce();
998 }
999
1000 String LSCPServer::GetAudioOutputDeviceInfo(uint DeviceIndex) {
1001 dmsg(2,("LSCPServer: GetAudioOutputDeviceInfo(DeviceIndex=%d)\n",DeviceIndex));
1002 LSCPResultSet result;
1003 try {
1004 std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
1005 if (!devices.count(DeviceIndex)) throw Exception("There is no audio output device with index " + ToString(DeviceIndex) + ".");
1006 AudioOutputDevice* pDevice = devices[DeviceIndex];
1007 result.Add("DRIVER", pDevice->Driver());
1008 std::map<String,DeviceCreationParameter*> parameters = pDevice->DeviceParameters();
1009 std::map<String,DeviceCreationParameter*>::iterator iter = parameters.begin();
1010 for (; iter != parameters.end(); iter++) {
1011 result.Add(iter->first, iter->second->Value());
1012 }
1013 }
1014 catch (Exception e) {
1015 result.Error(e);
1016 }
1017 return result.Produce();
1018 }
1019
1020 String LSCPServer::GetMidiInputDeviceInfo(uint DeviceIndex) {
1021 dmsg(2,("LSCPServer: GetMidiInputDeviceInfo(DeviceIndex=%d)\n",DeviceIndex));
1022 LSCPResultSet result;
1023 try {
1024 std::map<uint,MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
1025 if (!devices.count(DeviceIndex)) throw Exception("There is no MIDI input device with index " + ToString(DeviceIndex) + ".");
1026 MidiInputDevice* pDevice = devices[DeviceIndex];
1027 result.Add("DRIVER", pDevice->Driver());
1028 std::map<String,DeviceCreationParameter*> parameters = pDevice->DeviceParameters();
1029 std::map<String,DeviceCreationParameter*>::iterator iter = parameters.begin();
1030 for (; iter != parameters.end(); iter++) {
1031 result.Add(iter->first, iter->second->Value());
1032 }
1033 }
1034 catch (Exception e) {
1035 result.Error(e);
1036 }
1037 return result.Produce();
1038 }
1039 String LSCPServer::GetMidiInputPortInfo(uint DeviceIndex, uint PortIndex) {
1040 dmsg(2,("LSCPServer: GetMidiInputPortInfo(DeviceIndex=%d, PortIndex=%d)\n",DeviceIndex, PortIndex));
1041 LSCPResultSet result;
1042 try {
1043 // get MIDI input device
1044 std::map<uint,MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
1045 if (!devices.count(DeviceIndex)) throw Exception("There is no MIDI input device with index " + ToString(DeviceIndex) + ".");
1046 MidiInputDevice* pDevice = devices[DeviceIndex];
1047
1048 // get MIDI port
1049 MidiInputPort* pMidiInputPort = pDevice->GetPort(PortIndex);
1050 if (!pMidiInputPort) throw Exception("There is no MIDI input port with index " + ToString(PortIndex) + ".");
1051
1052 // return the values of all MIDI port parameters
1053 std::map<String,DeviceRuntimeParameter*> parameters = pMidiInputPort->PortParameters();
1054 std::map<String,DeviceRuntimeParameter*>::iterator iter = parameters.begin();
1055 for (; iter != parameters.end(); iter++) {
1056 result.Add(iter->first, iter->second->Value());
1057 }
1058 }
1059 catch (Exception e) {
1060 result.Error(e);
1061 }
1062 return result.Produce();
1063 }
1064
1065 String LSCPServer::GetAudioOutputChannelInfo(uint DeviceId, uint ChannelId) {
1066 dmsg(2,("LSCPServer: GetAudioOutputChannelInfo(DeviceId=%d,ChannelId)\n",DeviceId,ChannelId));
1067 LSCPResultSet result;
1068 try {
1069 // get audio output device
1070 std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
1071 if (!devices.count(DeviceId)) throw Exception("There is no audio output device with index " + ToString(DeviceId) + ".");
1072 AudioOutputDevice* pDevice = devices[DeviceId];
1073
1074 // get audio channel
1075 AudioChannel* pChannel = pDevice->Channel(ChannelId);
1076 if (!pChannel) throw Exception("Audio output device does not have audio channel " + ToString(ChannelId) + ".");
1077
1078 // return the values of all audio channel parameters
1079 std::map<String,DeviceRuntimeParameter*> parameters = pChannel->ChannelParameters();
1080 std::map<String,DeviceRuntimeParameter*>::iterator iter = parameters.begin();
1081 for (; iter != parameters.end(); iter++) {
1082 result.Add(iter->first, iter->second->Value());
1083 }
1084 }
1085 catch (Exception e) {
1086 result.Error(e);
1087 }
1088 return result.Produce();
1089 }
1090
1091 String LSCPServer::GetMidiInputPortParameterInfo(uint DeviceId, uint PortId, String ParameterName) {
1092 dmsg(2,("LSCPServer: GetMidiInputPortParameterInfo(DeviceId=%d,PortId=%d,ParameterName=%s)\n",DeviceId,PortId,ParameterName.c_str()));
1093 LSCPResultSet result;
1094 try {
1095 // get MIDI input device
1096 std::map<uint,MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
1097 if (!devices.count(DeviceId)) throw Exception("There is no midi input device with index " + ToString(DeviceId) + ".");
1098 MidiInputDevice* pDevice = devices[DeviceId];
1099
1100 // get midi port
1101 MidiInputPort* pPort = pDevice->GetPort(PortId);
1102 if (!pPort) throw Exception("Midi input device does not have port " + ToString(PortId) + ".");
1103
1104 // get desired port parameter
1105 std::map<String,DeviceRuntimeParameter*> parameters = pPort->PortParameters();
1106 if (!parameters.count(ParameterName)) throw Exception("Midi port does not provide a parameter '" + ParameterName + "'.");
1107 DeviceRuntimeParameter* pParameter = parameters[ParameterName];
1108
1109 // return all fields of this audio channel parameter
1110 result.Add("TYPE", pParameter->Type());
1111 result.Add("DESCRIPTION", pParameter->Description());
1112 result.Add("FIX", pParameter->Fix());
1113 result.Add("MULTIPLICITY", pParameter->Multiplicity());
1114 if (pParameter->RangeMin()) result.Add("RANGE_MIN", *pParameter->RangeMin());
1115 if (pParameter->RangeMax()) result.Add("RANGE_MAX", *pParameter->RangeMax());
1116 if (pParameter->Possibilities()) result.Add("POSSIBILITIES", *pParameter->Possibilities());
1117 }
1118 catch (Exception e) {
1119 result.Error(e);
1120 }
1121 return result.Produce();
1122 }
1123
1124 String LSCPServer::GetAudioOutputChannelParameterInfo(uint DeviceId, uint ChannelId, String ParameterName) {
1125 dmsg(2,("LSCPServer: GetAudioOutputChannelParameterInfo(DeviceId=%d,ChannelId=%d,ParameterName=%s)\n",DeviceId,ChannelId,ParameterName.c_str()));
1126 LSCPResultSet result;
1127 try {
1128 // get audio output device
1129 std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
1130 if (!devices.count(DeviceId)) throw Exception("There is no audio output device with index " + ToString(DeviceId) + ".");
1131 AudioOutputDevice* pDevice = devices[DeviceId];
1132
1133 // get audio channel
1134 AudioChannel* pChannel = pDevice->Channel(ChannelId);
1135 if (!pChannel) throw Exception("Audio output device does not have audio channel " + ToString(ChannelId) + ".");
1136
1137 // get desired audio channel parameter
1138 std::map<String,DeviceRuntimeParameter*> parameters = pChannel->ChannelParameters();
1139 if (!parameters.count(ParameterName)) throw Exception("Audio channel does not provide a parameter '" + ParameterName + "'.");
1140 DeviceRuntimeParameter* pParameter = parameters[ParameterName];
1141
1142 // return all fields of this audio channel parameter
1143 result.Add("TYPE", pParameter->Type());
1144 result.Add("DESCRIPTION", pParameter->Description());
1145 result.Add("FIX", pParameter->Fix());
1146 result.Add("MULTIPLICITY", pParameter->Multiplicity());
1147 if (pParameter->RangeMin()) result.Add("RANGE_MIN", *pParameter->RangeMin());
1148 if (pParameter->RangeMax()) result.Add("RANGE_MAX", *pParameter->RangeMax());
1149 if (pParameter->Possibilities()) result.Add("POSSIBILITIES", *pParameter->Possibilities());
1150 }
1151 catch (Exception e) {
1152 result.Error(e);
1153 }
1154 return result.Produce();
1155 }
1156
1157 String LSCPServer::SetAudioOutputChannelParameter(uint DeviceId, uint ChannelId, String ParamKey, String ParamVal) {
1158 dmsg(2,("LSCPServer: SetAudioOutputChannelParameter(DeviceId=%d,ChannelId=%d,ParamKey=%s,ParamVal=%s)\n",DeviceId,ChannelId,ParamKey.c_str(),ParamVal.c_str()));
1159 LSCPResultSet result;
1160 try {
1161 // get audio output device
1162 std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
1163 if (!devices.count(DeviceId)) throw Exception("There is no audio output device with index " + ToString(DeviceId) + ".");
1164 AudioOutputDevice* pDevice = devices[DeviceId];
1165
1166 // get audio channel
1167 AudioChannel* pChannel = pDevice->Channel(ChannelId);
1168 if (!pChannel) throw Exception("Audio output device does not have audio channel " + ToString(ChannelId) + ".");
1169
1170 // get desired audio channel parameter
1171 std::map<String,DeviceRuntimeParameter*> parameters = pChannel->ChannelParameters();
1172 if (!parameters.count(ParamKey)) throw Exception("Audio channel does not provide a parameter '" + ParamKey + "'.");
1173 DeviceRuntimeParameter* pParameter = parameters[ParamKey];
1174
1175 // set new channel parameter value
1176 pParameter->SetValue(ParamVal);
1177 }
1178 catch (Exception e) {
1179 result.Error(e);
1180 }
1181 return result.Produce();
1182 }
1183
1184 String LSCPServer::SetAudioOutputDeviceParameter(uint DeviceIndex, String ParamKey, String ParamVal) {
1185 dmsg(2,("LSCPServer: SetAudioOutputDeviceParameter(DeviceIndex=%d,ParamKey=%s,ParamVal=%s)\n",DeviceIndex,ParamKey.c_str(),ParamVal.c_str()));
1186 LSCPResultSet result;
1187 try {
1188 std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
1189 if (!devices.count(DeviceIndex)) throw Exception("There is no audio output device with index " + ToString(DeviceIndex) + ".");
1190 AudioOutputDevice* pDevice = devices[DeviceIndex];
1191 std::map<String,DeviceCreationParameter*> parameters = pDevice->DeviceParameters();
1192 if (!parameters.count(ParamKey)) throw Exception("Audio output device " + ToString(DeviceIndex) + " does not have a device parameter '" + ParamKey + "'");
1193 parameters[ParamKey]->SetValue(ParamVal);
1194 }
1195 catch (Exception e) {
1196 result.Error(e);
1197 }
1198 return result.Produce();
1199 }
1200
1201 String LSCPServer::SetMidiInputDeviceParameter(uint DeviceIndex, String ParamKey, String ParamVal) {
1202 dmsg(2,("LSCPServer: SetMidiOutputDeviceParameter(DeviceIndex=%d,ParamKey=%s,ParamVal=%s)\n",DeviceIndex,ParamKey.c_str(),ParamVal.c_str()));
1203 LSCPResultSet result;
1204 try {
1205 std::map<uint,MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
1206 if (!devices.count(DeviceIndex)) throw Exception("There is no MIDI input device with index " + ToString(DeviceIndex) + ".");
1207 MidiInputDevice* pDevice = devices[DeviceIndex];
1208 std::map<String,DeviceCreationParameter*> parameters = pDevice->DeviceParameters();
1209 if (!parameters.count(ParamKey)) throw Exception("MIDI input device " + ToString(DeviceIndex) + " does not have a device parameter '" + ParamKey + "'");
1210 parameters[ParamKey]->SetValue(ParamVal);
1211 }
1212 catch (Exception e) {
1213 result.Error(e);
1214 }
1215 return result.Produce();
1216 }
1217
1218 String LSCPServer::SetMidiInputPortParameter(uint DeviceIndex, uint PortIndex, String ParamKey, String ParamVal) {
1219 dmsg(2,("LSCPServer: SetMidiOutputDeviceParameter(DeviceIndex=%d,ParamKey=%s,ParamVal=%s)\n",DeviceIndex,ParamKey.c_str(),ParamVal.c_str()));
1220 LSCPResultSet result;
1221 try {
1222 // get MIDI input device
1223 std::map<uint,MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
1224 if (!devices.count(DeviceIndex)) throw Exception("There is no MIDI input device with index " + ToString(DeviceIndex) + ".");
1225 MidiInputDevice* pDevice = devices[DeviceIndex];
1226
1227 // get MIDI port
1228 MidiInputPort* pMidiInputPort = pDevice->GetPort(PortIndex);
1229 if (!pMidiInputPort) throw Exception("There is no MIDI input port with index " + ToString(PortIndex) + ".");
1230
1231 // set port parameter value
1232 std::map<String,DeviceRuntimeParameter*> parameters = pMidiInputPort->PortParameters();
1233 if (!parameters.count(ParamKey)) throw Exception("MIDI input device " + ToString(PortIndex) + " does not have a parameter '" + ParamKey + "'");
1234 parameters[ParamKey]->SetValue(ParamVal);
1235 }
1236 catch (Exception e) {
1237 result.Error(e);
1238 }
1239 return result.Produce();
1240 }
1241
1242 /**
1243 * Will be called by the parser to change the audio output channel for
1244 * playback on a particular sampler channel.
1245 */
1246 String LSCPServer::SetAudioOutputChannel(uint ChannelAudioOutputChannel, uint AudioOutputDeviceInputChannel, uint uiSamplerChannel) {
1247 dmsg(2,("LSCPServer: SetAudioOutputChannel(ChannelAudioOutputChannel=%d, AudioOutputDeviceInputChannel=%d, SamplerChannel=%d)\n",ChannelAudioOutputChannel,AudioOutputDeviceInputChannel,uiSamplerChannel));
1248 LSCPResultSet result;
1249 try {
1250 SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1251 if (!pSamplerChannel) throw Exception("Invalid sampler channel number " + ToString(uiSamplerChannel));
1252 EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
1253 if (!pEngineChannel) throw Exception("No engine type yet assigned to sampler channel " + ToString(uiSamplerChannel));
1254 if (!pSamplerChannel->GetAudioOutputDevice()) throw Exception("No audio output device connected to sampler channel " + ToString(uiSamplerChannel));
1255 pEngineChannel->SetOutputChannel(ChannelAudioOutputChannel, AudioOutputDeviceInputChannel);
1256 }
1257 catch (Exception e) {
1258 result.Error(e);
1259 }
1260 return result.Produce();
1261 }
1262
1263 String LSCPServer::SetAudioOutputDevice(uint AudioDeviceId, uint uiSamplerChannel) {
1264 dmsg(2,("LSCPServer: SetAudiotOutputDevice(AudioDeviceId=%d, SamplerChannel=%d)\n",AudioDeviceId,uiSamplerChannel));
1265 LSCPResultSet result;
1266 LockRTNotify();
1267 try {
1268 SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1269 if (!pSamplerChannel) throw Exception("Invalid sampler channel number " + ToString(uiSamplerChannel));
1270 std::map<uint, AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
1271 if (!devices.count(AudioDeviceId)) throw Exception("There is no audio output device with index " + ToString(AudioDeviceId));
1272 AudioOutputDevice* pDevice = devices[AudioDeviceId];
1273 pSamplerChannel->SetAudioOutputDevice(pDevice);
1274 }
1275 catch (Exception e) {
1276 result.Error(e);
1277 }
1278 UnlockRTNotify();
1279 return result.Produce();
1280 }
1281
1282 String LSCPServer::SetAudioOutputType(String AudioOutputDriver, uint uiSamplerChannel) {
1283 dmsg(2,("LSCPServer: SetAudioOutputType(String AudioOutputDriver=%s, SamplerChannel=%d)\n",AudioOutputDriver.c_str(),uiSamplerChannel));
1284 LSCPResultSet result;
1285 LockRTNotify();
1286 try {
1287 SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1288 if (!pSamplerChannel) throw Exception("Invalid sampler channel number " + ToString(uiSamplerChannel));
1289 // Driver type name aliasing...
1290 if (AudioOutputDriver == "Alsa") AudioOutputDriver = "ALSA";
1291 if (AudioOutputDriver == "Jack") AudioOutputDriver = "JACK";
1292 // Check if there's one audio output device already created
1293 // for the intended audio driver type (AudioOutputDriver)...
1294 AudioOutputDevice *pDevice = NULL;
1295 std::map<uint, AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
1296 std::map<uint, AudioOutputDevice*>::iterator iter = devices.begin();
1297 for (; iter != devices.end(); iter++) {
1298 if ((iter->second)->Driver() == AudioOutputDriver) {
1299 pDevice = iter->second;
1300 break;
1301 }
1302 }
1303 // If it doesn't exist, create a new one with default parameters...
1304 if (pDevice == NULL) {
1305 std::map<String,String> params;
1306 pDevice = pSampler->CreateAudioOutputDevice(AudioOutputDriver, params);
1307 }
1308 // Must have a device...
1309 if (pDevice == NULL)
1310 throw Exception("Internal error: could not create audio output device.");
1311 // Set it as the current channel device...
1312 pSamplerChannel->SetAudioOutputDevice(pDevice);
1313 }
1314 catch (Exception e) {
1315 result.Error(e);
1316 }
1317 UnlockRTNotify();
1318 return result.Produce();
1319 }
1320
1321 String LSCPServer::SetMIDIInputPort(uint MIDIPort, uint uiSamplerChannel) {
1322 dmsg(2,("LSCPServer: SetMIDIInputPort(MIDIPort=%d, SamplerChannel=%d)\n",MIDIPort,uiSamplerChannel));
1323 LSCPResultSet result;
1324 try {
1325 SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1326 if (!pSamplerChannel) throw Exception("Invalid sampler channel number " + ToString(uiSamplerChannel));
1327 pSamplerChannel->SetMidiInputPort(MIDIPort);
1328 }
1329 catch (Exception e) {
1330 result.Error(e);
1331 }
1332 return result.Produce();
1333 }
1334
1335 String LSCPServer::SetMIDIInputChannel(uint MIDIChannel, uint uiSamplerChannel) {
1336 dmsg(2,("LSCPServer: SetMIDIInputChannel(MIDIChannel=%d, SamplerChannel=%d)\n",MIDIChannel,uiSamplerChannel));
1337 LSCPResultSet result;
1338 try {
1339 SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1340 if (!pSamplerChannel) throw Exception("Invalid sampler channel number " + ToString(uiSamplerChannel));
1341 pSamplerChannel->SetMidiInputChannel((midi_chan_t) MIDIChannel);
1342 }
1343 catch (Exception e) {
1344 result.Error(e);
1345 }
1346 return result.Produce();
1347 }
1348
1349 String LSCPServer::SetMIDIInputDevice(uint MIDIDeviceId, uint uiSamplerChannel) {
1350 dmsg(2,("LSCPServer: SetMIDIInputDevice(MIDIDeviceId=%d, SamplerChannel=%d)\n",MIDIDeviceId,uiSamplerChannel));
1351 LSCPResultSet result;
1352 try {
1353 SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1354 if (!pSamplerChannel) throw Exception("Invalid sampler channel number " + ToString(uiSamplerChannel));
1355 std::map<uint, MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
1356 if (!devices.count(MIDIDeviceId)) throw Exception("There is no MIDI input device with index " + ToString(MIDIDeviceId));
1357 MidiInputDevice* pDevice = devices[MIDIDeviceId];
1358 pSamplerChannel->SetMidiInputDevice(pDevice);
1359 }
1360 catch (Exception e) {
1361 result.Error(e);
1362 }
1363 return result.Produce();
1364 }
1365
1366 String LSCPServer::SetMIDIInputType(String MidiInputDriver, uint uiSamplerChannel) {
1367 dmsg(2,("LSCPServer: SetMIDIInputType(String MidiInputDriver=%s, SamplerChannel=%d)\n",MidiInputDriver.c_str(),uiSamplerChannel));
1368 LSCPResultSet result;
1369 try {
1370 SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1371 if (!pSamplerChannel) throw Exception("Invalid sampler channel number " + ToString(uiSamplerChannel));
1372 // Driver type name aliasing...
1373 if (MidiInputDriver == "Alsa") MidiInputDriver = "ALSA";
1374 // Check if there's one MIDI input device already created
1375 // for the intended MIDI driver type (MidiInputDriver)...
1376 MidiInputDevice *pDevice = NULL;
1377 std::map<uint, MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
1378 std::map<uint, MidiInputDevice*>::iterator iter = devices.begin();
1379 for (; iter != devices.end(); iter++) {
1380 if ((iter->second)->Driver() == MidiInputDriver) {
1381 pDevice = iter->second;
1382 break;
1383 }
1384 }
1385 // If it doesn't exist, create a new one with default parameters...
1386 if (pDevice == NULL) {
1387 std::map<String,String> params;
1388 pDevice = pSampler->CreateMidiInputDevice(MidiInputDriver, params);
1389 // Make it with at least one initial port.
1390 std::map<String,DeviceCreationParameter*> parameters = pDevice->DeviceParameters();
1391 parameters["PORTS"]->SetValue("1");
1392 }
1393 // Must have a device...
1394 if (pDevice == NULL)
1395 throw Exception("Internal error: could not create MIDI input device.");
1396 // Set it as the current channel device...
1397 pSamplerChannel->SetMidiInputDevice(pDevice);
1398 }
1399 catch (Exception e) {
1400 result.Error(e);
1401 }
1402 return result.Produce();
1403 }
1404
1405 /**
1406 * Will be called by the parser to change the MIDI input device, port and channel on which
1407 * engine of a particular sampler channel should listen to.
1408 */
1409 String LSCPServer::SetMIDIInput(uint MIDIDeviceId, uint MIDIPort, uint MIDIChannel, uint uiSamplerChannel) {
1410 dmsg(2,("LSCPServer: SetMIDIInput(MIDIDeviceId=%d, MIDIPort=%d, MIDIChannel=%d, SamplerChannel=%d)\n", MIDIDeviceId, MIDIPort, MIDIChannel, uiSamplerChannel));
1411 LSCPResultSet result;
1412 try {
1413 SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1414 if (!pSamplerChannel) throw Exception("Invalid sampler channel number " + ToString(uiSamplerChannel));
1415 std::map<uint, MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
1416 if (!devices.count(MIDIDeviceId)) throw Exception("There is no MIDI input device with index " + ToString(MIDIDeviceId));
1417 MidiInputDevice* pDevice = devices[MIDIDeviceId];
1418 pSamplerChannel->SetMidiInput(pDevice, MIDIPort, (midi_chan_t) MIDIChannel);
1419 }
1420 catch (Exception e) {
1421 result.Error(e);
1422 }
1423 return result.Produce();
1424 }
1425
1426 /**
1427 * Will be called by the parser to change the global volume factor on a
1428 * particular sampler channel.
1429 */
1430 String LSCPServer::SetVolume(double dVolume, uint uiSamplerChannel) {
1431 dmsg(2,("LSCPServer: SetVolume(Volume=%f, SamplerChannel=%d)\n", dVolume, uiSamplerChannel));
1432 LSCPResultSet result;
1433 try {
1434 SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1435 if (!pSamplerChannel) throw Exception("Invalid sampler channel number " + ToString(uiSamplerChannel));
1436 EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
1437 if (!pEngineChannel) throw Exception("No engine type assigned to sampler channel");
1438 pEngineChannel->Volume(dVolume);
1439 }
1440 catch (Exception e) {
1441 result.Error(e);
1442 }
1443 return result.Produce();
1444 }
1445
1446 /**
1447 * Will be called by the parser to mute/unmute particular sampler channel.
1448 */
1449 String LSCPServer::SetChannelMute(bool bMute, uint uiSamplerChannel) {
1450 dmsg(2,("LSCPServer: SetChannelMute(bMute=%d,uiSamplerChannel=%d)\n",bMute,uiSamplerChannel));
1451 LSCPResultSet result;
1452 try {
1453 SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1454 if (!pSamplerChannel) throw Exception("Invalid sampler channel number " + ToString(uiSamplerChannel));
1455
1456 EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
1457 if (!pEngineChannel) throw Exception("No engine type assigned to sampler channel");
1458
1459 if(!bMute) pEngineChannel->SetMute((HasSoloChannel() && !pEngineChannel->GetSolo()) ? -1 : 0);
1460 else pEngineChannel->SetMute(1);
1461 } catch (Exception e) {
1462 result.Error(e);
1463 }
1464 return result.Produce();
1465 }
1466
1467 /**
1468 * Will be called by the parser to solo particular sampler channel.
1469 */
1470 String LSCPServer::SetChannelSolo(bool bSolo, uint uiSamplerChannel) {
1471 dmsg(2,("LSCPServer: SetChannelSolo(bSolo=%d,uiSamplerChannel=%d)\n",bSolo,uiSamplerChannel));
1472 LSCPResultSet result;
1473 try {
1474 SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1475 if (!pSamplerChannel) throw Exception("Invalid sampler channel number " + ToString(uiSamplerChannel));
1476
1477 EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
1478 if (!pEngineChannel) throw Exception("No engine type assigned to sampler channel");
1479
1480 bool oldSolo = pEngineChannel->GetSolo();
1481 bool hadSoloChannel = HasSoloChannel();
1482
1483 pEngineChannel->SetSolo(bSolo);
1484
1485 if(!oldSolo && bSolo) {
1486 if(pEngineChannel->GetMute() == -1) pEngineChannel->SetMute(0);
1487 if(!hadSoloChannel) MuteNonSoloChannels();
1488 }
1489
1490 if(oldSolo && !bSolo) {
1491 if(!HasSoloChannel()) UnmuteChannels();
1492 else if(!pEngineChannel->GetMute()) pEngineChannel->SetMute(-1);
1493 }
1494 } catch (Exception e) {
1495 result.Error(e);
1496 }
1497 return result.Produce();
1498 }
1499
1500 /**
1501 * Determines whether there is at least one solo channel in the channel list.
1502 *
1503 * @returns true if there is at least one solo channel in the channel list,
1504 * false otherwise.
1505 */
1506 bool LSCPServer::HasSoloChannel() {
1507 std::map<uint,SamplerChannel*> channels = pSampler->GetSamplerChannels();
1508 std::map<uint,SamplerChannel*>::iterator iter = channels.begin();
1509 for (; iter != channels.end(); iter++) {
1510 EngineChannel* c = iter->second->GetEngineChannel();
1511 if(c && c->GetSolo()) return true;
1512 }
1513
1514 return false;
1515 }
1516
1517 /**
1518 * Mutes all unmuted non-solo channels. Notice that the channels are muted
1519 * with -1 which indicates that they are muted because of the presence
1520 * of a solo channel(s). Channels muted with -1 will be automatically unmuted
1521 * when there are no solo channels left.
1522 */
1523 void LSCPServer::MuteNonSoloChannels() {
1524 dmsg(2,("LSCPServer: MuteNonSoloChannels()\n"));
1525 std::map<uint,SamplerChannel*> channels = pSampler->GetSamplerChannels();
1526 std::map<uint,SamplerChannel*>::iterator iter = channels.begin();
1527 for (; iter != channels.end(); iter++) {
1528 EngineChannel* c = iter->second->GetEngineChannel();
1529 if(c && !c->GetSolo() && !c->GetMute()) c->SetMute(-1);
1530 }
1531 }
1532
1533 /**
1534 * Unmutes all channels that are muted because of the presence
1535 * of a solo channel(s).
1536 */
1537 void LSCPServer::UnmuteChannels() {
1538 dmsg(2,("LSCPServer: UnmuteChannels()\n"));
1539 std::map<uint,SamplerChannel*> channels = pSampler->GetSamplerChannels();
1540 std::map<uint,SamplerChannel*>::iterator iter = channels.begin();
1541 for (; iter != channels.end(); iter++) {
1542 EngineChannel* c = iter->second->GetEngineChannel();
1543 if(c && c->GetMute() == -1) c->SetMute(0);
1544 }
1545 }
1546
1547 /**
1548 * Will be called by the parser to reset a particular sampler channel.
1549 */
1550 String LSCPServer::ResetChannel(uint uiSamplerChannel) {
1551 dmsg(2,("LSCPServer: ResetChannel(SamplerChannel=%d)\n", uiSamplerChannel));
1552 LSCPResultSet result;
1553 try {
1554 SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1555 if (!pSamplerChannel) throw Exception("Invalid sampler channel number " + ToString(uiSamplerChannel));
1556 EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel();
1557 if (!pEngineChannel) throw Exception("No engine type assigned to sampler channel");
1558 pEngineChannel->Reset();
1559 }
1560 catch (Exception e) {
1561 result.Error(e);
1562 }
1563 return result.Produce();
1564 }
1565
1566 /**
1567 * Will be called by the parser to reset the whole sampler.
1568 */
1569 String LSCPServer::ResetSampler() {
1570 dmsg(2,("LSCPServer: ResetSampler()\n"));
1571 pSampler->Reset();
1572 LSCPResultSet result;
1573 return result.Produce();
1574 }
1575
1576 /**
1577 * Will be called by the parser to return general informations about this
1578 * sampler.
1579 */
1580 String LSCPServer::GetServerInfo() {
1581 dmsg(2,("LSCPServer: GetServerInfo()\n"));
1582 LSCPResultSet result;
1583 result.Add("DESCRIPTION", "LinuxSampler - modular, streaming capable sampler");
1584 result.Add("VERSION", VERSION);
1585 result.Add("PROTOCOL_VERSION", "1.0");
1586 return result.Produce();
1587 }
1588
1589 /**
1590 * Will be called by the parser to return the current number of all active voices.
1591 */
1592 String LSCPServer::GetTotalVoiceCount() {
1593 dmsg(2,("LSCPServer: GetTotalVoiceCount()\n"));
1594 LSCPResultSet result;
1595 result.Add(pSampler->GetVoiceCount());
1596 return result.Produce();
1597 }
1598
1599 /**
1600 * Will be called by the parser to return the maximum number of voices.
1601 */
1602 String LSCPServer::GetTotalVoiceCountMax() {
1603 dmsg(2,("LSCPServer: GetTotalVoiceCountMax()\n"));
1604 LSCPResultSet result;
1605 result.Add(EngineFactory::EngineInstances().size() * CONFIG_MAX_VOICES);
1606 return result.Produce();
1607 }
1608
1609 /**
1610 * Will be called by the parser to subscribe a client (frontend) on the
1611 * server for receiving event messages.
1612 */
1613 String LSCPServer::SubscribeNotification(LSCPEvent::event_t type) {
1614 dmsg(2,("LSCPServer: SubscribeNotification(Event=%s)\n", LSCPEvent::Name(type).c_str()));
1615 LSCPResultSet result;
1616 SubscriptionMutex.Lock();
1617 eventSubscriptions[type].push_back(currentSocket);
1618 SubscriptionMutex.Unlock();
1619 return result.Produce();
1620 }
1621
1622 /**
1623 * Will be called by the parser to unsubscribe a client on the server
1624 * for not receiving further event messages.
1625 */
1626 String LSCPServer::UnsubscribeNotification(LSCPEvent::event_t type) {
1627 dmsg(2,("LSCPServer: UnsubscribeNotification(Event=%s)\n", LSCPEvent::Name(type).c_str()));
1628 LSCPResultSet result;
1629 SubscriptionMutex.Lock();
1630 eventSubscriptions[type].remove(currentSocket);
1631 SubscriptionMutex.Unlock();
1632 return result.Produce();
1633 }
1634
1635 static int select_callback(void * lscpResultSet, int argc,
1636 char **argv, char **azColName)
1637 {
1638 LSCPResultSet* resultSet = (LSCPResultSet*) lscpResultSet;
1639 resultSet->Add(argc, argv);
1640 return 0;
1641 }
1642
1643 String LSCPServer::QueryDatabase(String query) {
1644 LSCPResultSet result;
1645 #if HAVE_SQLITE3
1646 char* zErrMsg = NULL;
1647 sqlite3 *db;
1648 String selectStr = "SELECT " + query;
1649
1650 int rc = sqlite3_open("linuxsampler.db", &db);
1651 if (rc == SQLITE_OK)
1652 {
1653 rc = sqlite3_exec(db, selectStr.c_str(), select_callback, &result, &zErrMsg);
1654 }
1655 if ( rc != SQLITE_OK )
1656 {
1657 result.Error(String(zErrMsg), rc);
1658 }
1659 sqlite3_close(db);
1660 #else
1661 result.Error(String("SQLITE3 was not installed when linuxsampler was built. SELECT statement is not available."), 0);
1662 #endif
1663 return result.Produce();
1664 }
1665
1666 /**
1667 * Will be called by the parser to enable or disable echo mode; if echo
1668 * mode is enabled, all commands from the client will (immediately) be
1669 * echoed back to the client.
1670 */
1671 String LSCPServer::SetEcho(yyparse_param_t* pSession, double boolean_value) {
1672 dmsg(2,("LSCPServer: SetEcho(val=%f)\n", boolean_value));
1673 LSCPResultSet result;
1674 try {
1675 if (boolean_value == 0) pSession->bVerbose = false;
1676 else if (boolean_value == 1) pSession->bVerbose = true;
1677 else throw Exception("Not a boolean value, must either be 0 or 1");
1678 }
1679 catch (Exception e) {
1680 result.Error(e);
1681 }
1682 return result.Produce();
1683 }

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