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

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Revision 707 - (show annotations) (download)
Thu Jul 21 08:38:15 2005 UTC (15 years, 8 months ago) by iliev
File size: 68993 byte(s)
* Fixed app exit on Broken pipe error (Fixes bug #20)

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

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