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

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Revision 385 - (hide annotations) (download)
Thu Feb 17 02:53:45 2005 UTC (19 years, 1 month ago) by schoenebeck
File size: 60550 byte(s)
* lscpserver: we now only use one instrument loader thread; commands for
  loading instruments in the background wait in a queue to be processed one
  by one to avoid possible race conditions and to improve I/O efficiency
* fixed possible race condition while streaming with multiple disk threads
  by using an own decompression buffer for each disk thread
* libgig: fixed some memory leaks caused by non virtual base constructors

1 schoenebeck 35 /***************************************************************************
2     * *
3     * LinuxSampler - modular, streaming capable sampler *
4     * *
5 schoenebeck 56 * Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck *
6 schoenebeck 385 * Copyright (C) 2005 Christian Schoenebeck *
7 schoenebeck 35 * *
8 schoenebeck 385 * This library is free software; you can redistribute it and/or modify *
9 schoenebeck 35 * 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 schoenebeck 385 * This library is distributed in the hope that it will be useful, *
14 schoenebeck 35 * 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 schoenebeck 385 * along with this library; if not, write to the Free Software *
20 schoenebeck 35 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, *
21     * MA 02111-1307 USA *
22     ***************************************************************************/
23    
24     #include "lscpserver.h"
25 senkov 113 #include "lscpresultset.h"
26 senkov 170 #include "lscpevent.h"
27 schoenebeck 35
28 schoenebeck 53 #include "../engines/gig/Engine.h"
29 schoenebeck 203 #include "../drivers/audio/AudioOutputDeviceFactory.h"
30     #include "../drivers/midi/MidiInputDeviceFactory.h"
31 schoenebeck 53
32 senkov 170 /**
33     * Below are a few static members of the LSCPServer class.
34     * The big assumption here is that LSCPServer is going to remain a singleton.
35     * These members are used to support client connections.
36     * Class handles multiple connections at the same time using select() and non-blocking recv()
37     * Commands are processed by a single LSCPServer thread.
38     * Notifications are delivered either by the thread that originated them
39     * or (if the resultset is currently in progress) by the LSCPServer thread
40     * after the resultset was sent out.
41     * This makes sure that resultsets can not be interrupted by notifications.
42     * This also makes sure that the thread sending notification is not blocked
43     * by the LSCPServer thread.
44     */
45     fd_set LSCPServer::fdSet;
46     int LSCPServer::currentSocket = -1;
47 schoenebeck 210 std::vector<yyparse_param_t> LSCPServer::Sessions = std::vector<yyparse_param_t>();
48 senkov 170 std::map<int,String> LSCPServer::bufferedNotifies = std::map<int,String>();
49     std::map<int,String> LSCPServer::bufferedCommands = std::map<int,String>();
50     std::map< LSCPEvent::event_t, std::list<int> > LSCPServer::eventSubscriptions = std::map< LSCPEvent::event_t, std::list<int> >();
51     Mutex LSCPServer::NotifyMutex = Mutex();
52     Mutex LSCPServer::NotifyBufferMutex = Mutex();
53     Mutex LSCPServer::SubscriptionMutex = Mutex();
54 senkov 360 Mutex LSCPServer::RTNotifyMutex = Mutex();
55 senkov 170
56 schoenebeck 53 LSCPServer::LSCPServer(Sampler* pSampler) : Thread(false, 0, -4) {
57     this->pSampler = pSampler;
58 senkov 170 LSCPEvent::RegisterEvent(LSCPEvent::event_channels, "CHANNELS");
59     LSCPEvent::RegisterEvent(LSCPEvent::event_voice_count, "VOICE_COUNT");
60     LSCPEvent::RegisterEvent(LSCPEvent::event_stream_count, "STREAM_COUNT");
61     LSCPEvent::RegisterEvent(LSCPEvent::event_buffer_fill, "BUFFER_FILL");
62     LSCPEvent::RegisterEvent(LSCPEvent::event_info, "INFO");
63     LSCPEvent::RegisterEvent(LSCPEvent::event_misc, "MISCELLANEOUS");
64 schoenebeck 35 }
65    
66 schoenebeck 211 /**
67     * Blocks the calling thread until the LSCP Server is initialized and
68     * accepting socket connections, if the server is already initialized then
69     * this method will return immediately.
70     * @param TimeoutSeconds - optional: max. wait time in seconds
71     * (default: 0s)
72     * @param TimeoutNanoSeconds - optional: max wait time in nano seconds
73     * (default: 0ns)
74     * @returns 0 on success, a value less than 0 if timeout exceeded
75     */
76     int LSCPServer::WaitUntilInitialized(long TimeoutSeconds, long TimeoutNanoSeconds) {
77     return Initialized.WaitAndUnlockIf(false, TimeoutSeconds, TimeoutNanoSeconds);
78     }
79    
80 schoenebeck 35 int LSCPServer::Main() {
81 senkov 170 int hSocket = socket(AF_INET, SOCK_STREAM, 0);
82 schoenebeck 35 if (hSocket < 0) {
83     std::cerr << "LSCPServer: Could not create server socket." << std::endl;
84 schoenebeck 53 //return -1;
85     exit(EXIT_FAILURE);
86 schoenebeck 35 }
87    
88     SocketAddress.sin_family = AF_INET;
89     SocketAddress.sin_port = htons(LSCP_PORT);
90     SocketAddress.sin_addr.s_addr = htonl(INADDR_ANY);
91    
92     if (bind(hSocket, (sockaddr*) &SocketAddress, sizeof(sockaddr_in)) < 0) {
93 schoenebeck 227 std::cerr << "LSCPServer: Could not bind server socket, retrying for " << ToString(LSCP_SERVER_BIND_TIMEOUT) << " seconds...";
94     for (int trial = 0; true; trial++) { // retry for LSCP_SERVER_BIND_TIMEOUT seconds
95     if (bind(hSocket, (sockaddr*) &SocketAddress, sizeof(sockaddr_in)) < 0) {
96     if (trial > LSCP_SERVER_BIND_TIMEOUT) {
97     std::cerr << "gave up!" << std::endl;
98     close(hSocket);
99     //return -1;
100     exit(EXIT_FAILURE);
101     }
102     else sleep(1); // sleep 1s
103     }
104     else break; // success
105     }
106 schoenebeck 35 }
107    
108     listen(hSocket, 1);
109 schoenebeck 211 Initialized.Set(true);
110 schoenebeck 35
111     // now wait for client connections and handle their requests
112     sockaddr_in client;
113     int length = sizeof(client);
114 senkov 170 FD_ZERO(&fdSet);
115     FD_SET(hSocket, &fdSet);
116     int maxSessions = hSocket;
117 schoenebeck 203
118 schoenebeck 35 while (true) {
119 senkov 170 fd_set selectSet = fdSet;
120 senkov 198 int retval = select(maxSessions+1, &selectSet, NULL, NULL, NULL);
121 senkov 170 if (retval == 0)
122 senkov 198 continue; //Nothing try again
123 senkov 170 if (retval == -1) {
124     std::cerr << "LSCPServer: Socket select error." << std::endl;
125     close(hSocket);
126     exit(EXIT_FAILURE);
127     }
128 schoenebeck 203
129 senkov 170 //Accept new connections now (if any)
130     if (FD_ISSET(hSocket, &selectSet)) {
131     int socket = accept(hSocket, (sockaddr*) &client, (socklen_t*) &length);
132     if (socket < 0) {
133     std::cerr << "LSCPServer: Client connection failed." << std::endl;
134     exit(EXIT_FAILURE);
135     }
136 schoenebeck 35
137 senkov 170 if (fcntl(socket, F_SETFL, O_NONBLOCK)) {
138     std::cerr << "LSCPServer: F_SETFL O_NONBLOCK failed." << std::endl;
139     exit(EXIT_FAILURE);
140     }
141 schoenebeck 35
142 schoenebeck 210 // Parser initialization
143     yyparse_param_t yyparse_param;
144     yyparse_param.pServer = this;
145     yyparse_param.hSession = socket;
146    
147     Sessions.push_back(yyparse_param);
148 senkov 170 FD_SET(socket, &fdSet);
149     if (socket > maxSessions)
150     maxSessions = socket;
151     dmsg(1,("LSCPServer: Client connection established on socket:%d.\n", socket));
152     LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_misc, "Client connection established on socket", socket));
153     continue; //Maybe this was the only selected socket, better select again
154     }
155 schoenebeck 35
156 senkov 170 //Something was selected and it was not the hSocket, so it must be some command(s) coming.
157 schoenebeck 210 for (std::vector<yyparse_param_t>::iterator iter = Sessions.begin(); iter != Sessions.end(); iter++) {
158     if (FD_ISSET((*iter).hSession, &selectSet)) { //Was it this socket?
159 senkov 170 if (GetLSCPCommand(iter)) { //Have we read the entire command?
160     dmsg(3,("LSCPServer: Got command on socket %d, calling parser.\n", currentSocket));
161 schoenebeck 219 int dummy; // just a temporary hack to fulfill the restart() function prototype
162     restart(NULL, dummy); // restart the 'scanner'
163 schoenebeck 210 currentSocket = (*iter).hSession; //a hack
164     if ((*iter).bVerbose) { // if echo mode enabled
165     AnswerClient(bufferedCommands[currentSocket]);
166     }
167     int result = yyparse(&(*iter));
168 senkov 170 currentSocket = -1; //continuation of a hack
169     dmsg(3,("LSCPServer: Done parsing on socket %d.\n", currentSocket));
170     if (result == LSCP_QUIT) { //Was it a quit command by any chance?
171     CloseConnection(iter);
172     }
173     }
174     //socket may have been closed, iter may be invalid, get out of the loop for now.
175     //we'll be back if there is data.
176 schoenebeck 203 break;
177 senkov 170 }
178     }
179    
180     //Now let's deliver late notifies (if any)
181     NotifyBufferMutex.Lock();
182     for (std::map<int,String>::iterator iterNotify = bufferedNotifies.begin(); iterNotify != bufferedNotifies.end(); iterNotify++) {
183     send(iterNotify->first, iterNotify->second.c_str(), iterNotify->second.size(), 0);
184     bufferedNotifies.erase(iterNotify);
185     }
186     NotifyBufferMutex.Unlock();
187 schoenebeck 35 }
188     }
189    
190 schoenebeck 210 void LSCPServer::CloseConnection( std::vector<yyparse_param_t>::iterator iter ) {
191     int socket = (*iter).hSession;
192 senkov 170 dmsg(1,("LSCPServer: Client connection terminated on socket:%d.\n",socket));
193     LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_misc, "Client connection terminated on socket", socket));
194 schoenebeck 210 Sessions.erase(iter);
195 senkov 170 FD_CLR(socket, &fdSet);
196     SubscriptionMutex.Lock(); //Must unsubscribe this socket from all events (if any)
197     for (std::map< LSCPEvent::event_t, std::list<int> >::iterator iter = eventSubscriptions.begin(); iter != eventSubscriptions.end(); iter++) {
198     iter->second.remove(socket);
199     }
200     SubscriptionMutex.Unlock();
201     NotifyMutex.Lock();
202     bufferedCommands.erase(socket);
203     bufferedNotifies.erase(socket);
204     close(socket);
205     NotifyMutex.Unlock();
206     }
207    
208 senkov 360 int LSCPServer::EventSubscribers( std::list<LSCPEvent::event_t> events ) {
209     int subs = 0;
210     SubscriptionMutex.Lock();
211     for( std::list<LSCPEvent::event_t>::iterator iter = events.begin();
212     iter != events.end(); iter++)
213     {
214     subs += eventSubscriptions.count(*iter);
215     }
216     SubscriptionMutex.Unlock();
217     return subs;
218     }
219    
220 senkov 170 void LSCPServer::SendLSCPNotify( LSCPEvent event ) {
221     SubscriptionMutex.Lock();
222     if (eventSubscriptions.count(event.GetType()) == 0) {
223     SubscriptionMutex.Unlock(); //Nobody is subscribed to this event
224     return;
225     }
226     std::list<int>::iterator iter = eventSubscriptions[event.GetType()].begin();
227     std::list<int>::iterator end = eventSubscriptions[event.GetType()].end();
228     String notify = event.Produce();
229    
230     while (true) {
231     if (NotifyMutex.Trylock()) {
232     for(;iter != end; iter++)
233     send(*iter, notify.c_str(), notify.size(), 0);
234     NotifyMutex.Unlock();
235     break;
236     } else {
237     if (NotifyBufferMutex.Trylock()) {
238     for(;iter != end; iter++)
239     bufferedNotifies[*iter] += notify;
240     NotifyBufferMutex.Unlock();
241     break;
242     }
243     }
244     }
245     SubscriptionMutex.Unlock();
246     }
247    
248     extern int GetLSCPCommand( void *buf, int max_size ) {
249     String command = LSCPServer::bufferedCommands[LSCPServer::currentSocket];
250     if (command.size() == 0) { //Parser wants input but we have nothing.
251     strcpy((char*) buf, "\n"); //So give it an empty command
252     return 1; //to keep it happy.
253     }
254    
255     if (max_size < command.size()) {
256     std::cerr << "getLSCPCommand: Flex buffer too small, ignoring the command." << std::endl;
257     return 0; //This will never happen
258     }
259    
260     strcpy((char*) buf, command.c_str());
261     LSCPServer::bufferedCommands.erase(LSCPServer::currentSocket);
262     return command.size();
263     }
264    
265 schoenebeck 35 /**
266 senkov 170 * Will be called to try to read the command from the socket
267     * If command is read, it will return true. Otherwise false is returned.
268     * In any case the received portion (complete or incomplete) is saved into bufferedCommand map.
269     */
270 schoenebeck 210 bool LSCPServer::GetLSCPCommand( std::vector<yyparse_param_t>::iterator iter ) {
271     int socket = (*iter).hSession;
272 senkov 170 char c;
273     int i = 0;
274     while (true) {
275     int result = recv(socket, (void *)&c, 1, 0); //Read one character at a time for now
276     if (result == 0) { //socket was selected, so 0 here means client has closed the connection
277     CloseConnection(iter);
278     break;
279     }
280     if (result == 1) {
281 schoenebeck 203 if (c == '\r')
282 senkov 170 continue; //Ignore CR
283     if (c == '\n') {
284 senkov 184 LSCPServer::SendLSCPNotify(LSCPEvent(LSCPEvent::event_misc, "Received \'" + bufferedCommands[socket] + "\' on socket", socket));
285 senkov 170 bufferedCommands[socket] += "\n";
286     return true; //Complete command was read
287     }
288     bufferedCommands[socket] += c;
289     }
290     if (result == -1) {
291     if (errno == EAGAIN) //Would block, try again later.
292     return false;
293     switch(errno) {
294     case EBADF:
295     dmsg(2,("LSCPScanner: The argument s is an invalid descriptor.\n"));
296     break;
297     case ECONNREFUSED:
298     dmsg(2,("LSCPScanner: A remote host refused to allow the network connection (typically because it is not running the requested service).\n"));
299     break;
300     case ENOTCONN:
301     dmsg(2,("LSCPScanner: The socket is associated with a connection-oriented protocol and has not been connected (see connect(2) and accept(2)).\n"));
302     break;
303     case ENOTSOCK:
304     dmsg(2,("LSCPScanner: The argument s does not refer to a socket.\n"));
305     break;
306     case EAGAIN:
307     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"));
308 schoenebeck 203 break;
309     case EINTR:
310 senkov 170 dmsg(2,("LSCPScanner: The receive was interrupted by delivery of a signal before any data were available.\n"));
311 schoenebeck 203 break;
312     case EFAULT:
313     dmsg(2,("LSCPScanner: The receive buffer pointer(s) point outside the process's address space.\n"));
314     break;
315     case EINVAL:
316     dmsg(2,("LSCPScanner: Invalid argument passed.\n"));
317     break;
318     case ENOMEM:
319     dmsg(2,("LSCPScanner: Could not allocate memory for recvmsg.\n"));
320     break;
321     default:
322     dmsg(2,("LSCPScanner: Unknown recv() error.\n"));
323     break;
324     }
325 senkov 170 CloseConnection(iter);
326     break;
327     }
328     }
329     return false;
330     }
331    
332     /**
333 schoenebeck 35 * Will be called by the parser whenever it wants to send an answer to the
334     * client / frontend.
335     *
336     * @param ReturnMessage - message that will be send to the client
337     */
338     void LSCPServer::AnswerClient(String ReturnMessage) {
339     dmsg(2,("LSCPServer::AnswerClient(ReturnMessage=%s)", ReturnMessage.c_str()));
340 senkov 170 if (currentSocket != -1) {
341     NotifyMutex.Lock();
342     send(currentSocket, ReturnMessage.c_str(), ReturnMessage.size(), 0);
343     NotifyMutex.Unlock();
344     }
345 schoenebeck 35 }
346    
347 capela 143 /**
348     * Find a created audio output device index.
349     */
350     int LSCPServer::GetAudioOutputDeviceIndex ( AudioOutputDevice *pDevice )
351     {
352     // Search for the created device to get its index
353     std::map<uint, AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
354     std::map<uint, AudioOutputDevice*>::iterator iter = devices.begin();
355     for (; iter != devices.end(); iter++) {
356     if (iter->second == pDevice)
357     return iter->first;
358     }
359     // Not found.
360     return -1;
361     }
362    
363 senkov 155 /**
364     * Find a created midi input device index.
365     */
366     int LSCPServer::GetMidiInputDeviceIndex ( MidiInputDevice *pDevice )
367     {
368     // Search for the created device to get its index
369     std::map<uint, MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
370     std::map<uint, MidiInputDevice*>::iterator iter = devices.begin();
371     for (; iter != devices.end(); iter++) {
372     if (iter->second == pDevice)
373     return iter->first;
374     }
375     // Not found.
376     return -1;
377     }
378    
379 schoenebeck 123 String LSCPServer::CreateAudioOutputDevice(String Driver, std::map<String,String> Parameters) {
380     dmsg(2,("LSCPServer: CreateAudioOutputDevice(Driver=%s)\n", Driver.c_str()));
381     LSCPResultSet result;
382     try {
383     AudioOutputDevice* pDevice = pSampler->CreateAudioOutputDevice(Driver, Parameters);
384     // search for the created device to get its index
385 capela 143 int index = GetAudioOutputDeviceIndex(pDevice);
386 schoenebeck 123 if (index == -1) throw LinuxSamplerException("Internal error: could not find created audio output device.");
387     result = index; // success
388     }
389     catch (LinuxSamplerException e) {
390     result.Error(e);
391     }
392     return result.Produce();
393     }
394    
395 senkov 155 String LSCPServer::CreateMidiInputDevice(String Driver, std::map<String,String> Parameters) {
396     dmsg(2,("LSCPServer: CreateMidiInputDevice(Driver=%s)\n", Driver.c_str()));
397     LSCPResultSet result;
398     try {
399     MidiInputDevice* pDevice = pSampler->CreateMidiInputDevice(Driver, Parameters);
400     // search for the created device to get its index
401     int index = GetMidiInputDeviceIndex(pDevice);
402     if (index == -1) throw LinuxSamplerException("Internal error: could not find created midi input device.");
403     result = index; // success
404     }
405     catch (LinuxSamplerException e) {
406     result.Error(e);
407     }
408     return result.Produce();
409     }
410    
411 schoenebeck 123 String LSCPServer::DestroyAudioOutputDevice(uint DeviceIndex) {
412     dmsg(2,("LSCPServer: DestroyAudioOutputDevice(DeviceIndex=%d)\n", DeviceIndex));
413     LSCPResultSet result;
414     try {
415     std::map<uint, AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
416 schoenebeck 223 if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceIndex) + ".");
417 schoenebeck 123 AudioOutputDevice* pDevice = devices[DeviceIndex];
418     pSampler->DestroyAudioOutputDevice(pDevice);
419     }
420     catch (LinuxSamplerException e) {
421     result.Error(e);
422     }
423     return result.Produce();
424     }
425    
426 senkov 155 String LSCPServer::DestroyMidiInputDevice(uint DeviceIndex) {
427     dmsg(2,("LSCPServer: DestroyMidiInputDevice(DeviceIndex=%d)\n", DeviceIndex));
428     LSCPResultSet result;
429     try {
430     std::map<uint, MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
431 schoenebeck 223 if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceIndex) + ".");
432 senkov 155 MidiInputDevice* pDevice = devices[DeviceIndex];
433     pSampler->DestroyMidiInputDevice(pDevice);
434     }
435     catch (LinuxSamplerException e) {
436     result.Error(e);
437     }
438     return result.Produce();
439     }
440    
441 schoenebeck 35 /**
442     * Will be called by the parser to load an instrument.
443     */
444 capela 137 String LSCPServer::LoadInstrument(String Filename, uint uiInstrument, uint uiSamplerChannel, bool bBackground) {
445 schoenebeck 53 dmsg(2,("LSCPServer: LoadInstrument(Filename=%s,Instrument=%d,SamplerChannel=%d)\n", Filename.c_str(), uiInstrument, uiSamplerChannel));
446 senkov 120 LSCPResultSet result;
447 schoenebeck 53 try {
448     SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
449 schoenebeck 374 if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
450 schoenebeck 53 Engine* pEngine = pSamplerChannel->GetEngine();
451 schoenebeck 374 if (!pEngine) throw LinuxSamplerException("No engine loaded on sampler channel");
452 schoenebeck 223 if (!pSamplerChannel->GetAudioOutputDevice())
453 schoenebeck 374 throw LinuxSamplerException("No audio output device connected to sampler channel");
454 capela 137 if (bBackground) {
455 schoenebeck 385 InstrumentLoader.StartNewLoad(Filename, uiInstrument, pEngine);
456 capela 137 }
457     else pEngine->LoadInstrument(Filename.c_str(), uiInstrument);
458 schoenebeck 53 }
459     catch (LinuxSamplerException e) {
460 senkov 120 result.Error(e);
461 schoenebeck 53 }
462 senkov 120 return result.Produce();
463 schoenebeck 35 }
464    
465     /**
466     * Will be called by the parser to load and deploy an engine.
467     */
468 schoenebeck 53 String LSCPServer::LoadEngine(String EngineName, uint uiSamplerChannel) {
469     dmsg(2,("LSCPServer: LoadEngine(EngineName=%s,SamplerChannel=%d)\n", EngineName.c_str(), uiSamplerChannel));
470 senkov 120 LSCPResultSet result;
471 schoenebeck 53 try {
472 schoenebeck 64 Engine::type_t type;
473 senkov 120 if ((EngineName == "GigEngine") || (EngineName == "gig")) type = Engine::type_gig;
474 schoenebeck 53 else throw LinuxSamplerException("Unknown engine type");
475     SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
476 schoenebeck 374 if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
477 senkov 360 LockRTNotify();
478 schoenebeck 53 pSamplerChannel->LoadEngine(type);
479 senkov 360 UnlockRTNotify();
480 schoenebeck 53 }
481     catch (LinuxSamplerException e) {
482 senkov 120 result.Error(e);
483 schoenebeck 53 }
484 senkov 120 return result.Produce();
485 schoenebeck 35 }
486    
487     /**
488     * Will be called by the parser to get the amount of sampler channels.
489     */
490     String LSCPServer::GetChannels() {
491     dmsg(2,("LSCPServer: GetChannels()\n"));
492 senkov 120 LSCPResultSet result;
493     result.Add(pSampler->SamplerChannels());
494     return result.Produce();
495 schoenebeck 35 }
496    
497     /**
498 schoenebeck 209 * Will be called by the parser to get the list of sampler channels.
499     */
500     String LSCPServer::ListChannels() {
501     dmsg(2,("LSCPServer: ListChannels()\n"));
502     String list;
503     std::map<uint,SamplerChannel*> channels = pSampler->GetSamplerChannels();
504     std::map<uint,SamplerChannel*>::iterator iter = channels.begin();
505     for (; iter != channels.end(); iter++) {
506     if (list != "") list += ",";
507     list += ToString(iter->first);
508     }
509     LSCPResultSet result;
510     result.Add(list);
511     return result.Produce();
512     }
513    
514     /**
515 schoenebeck 35 * Will be called by the parser to add a sampler channel.
516     */
517     String LSCPServer::AddChannel() {
518     dmsg(2,("LSCPServer: AddChannel()\n"));
519 schoenebeck 53 SamplerChannel* pSamplerChannel = pSampler->AddSamplerChannel();
520 senkov 120 LSCPResultSet result(pSamplerChannel->Index());
521     return result.Produce();
522 schoenebeck 35 }
523    
524     /**
525     * Will be called by the parser to remove a sampler channel.
526     */
527 schoenebeck 53 String LSCPServer::RemoveChannel(uint uiSamplerChannel) {
528     dmsg(2,("LSCPServer: RemoveChannel(SamplerChannel=%d)\n", uiSamplerChannel));
529 senkov 120 LSCPResultSet result;
530 senkov 360 LockRTNotify();
531 schoenebeck 53 pSampler->RemoveSamplerChannel(uiSamplerChannel);
532 senkov 360 UnlockRTNotify();
533 senkov 120 return result.Produce();
534 schoenebeck 35 }
535    
536     /**
537     * Will be called by the parser to get all available engines.
538     */
539     String LSCPServer::GetAvailableEngines() {
540     dmsg(2,("LSCPServer: GetAvailableEngines()\n"));
541 senkov 120 LSCPResultSet result("GigEngine");
542     return result.Produce();
543 schoenebeck 35 }
544    
545     /**
546     * Will be called by the parser to get descriptions for a particular engine.
547     */
548     String LSCPServer::GetEngineInfo(String EngineName) {
549     dmsg(2,("LSCPServer: GetEngineInfo(EngineName=%s)\n", EngineName.c_str()));
550 senkov 120 LSCPResultSet result;
551 schoenebeck 53 try {
552 senkov 120 if ((EngineName == "GigEngine") || (EngineName == "gig")) {
553 schoenebeck 53 Engine* pEngine = new LinuxSampler::gig::Engine;
554 schoenebeck 225 result.Add("DESCRIPTION", pEngine->Description());
555     result.Add("VERSION", pEngine->Version());
556 schoenebeck 53 delete pEngine;
557     }
558     else throw LinuxSamplerException("Unknown engine type");
559     }
560     catch (LinuxSamplerException e) {
561 senkov 120 result.Error(e);
562 schoenebeck 53 }
563 senkov 120 return result.Produce();
564 schoenebeck 35 }
565    
566     /**
567     * Will be called by the parser to get informations about a particular
568     * sampler channel.
569     */
570 schoenebeck 53 String LSCPServer::GetChannelInfo(uint uiSamplerChannel) {
571     dmsg(2,("LSCPServer: GetChannelInfo(SamplerChannel=%d)\n", uiSamplerChannel));
572 senkov 120 LSCPResultSet result;
573 senkov 113 try {
574     SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
575 schoenebeck 374 if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
576 senkov 113 Engine* pEngine = pSamplerChannel->GetEngine();
577 schoenebeck 123
578 senkov 117 //Defaults values
579     String EngineName = "NONE";
580 schoenebeck 225 float Volume = 0.0f;
581 senkov 117 String InstrumentFileName = "NONE";
582 senkov 376 String InstrumentName = "NONE";
583 capela 133 int InstrumentIndex = -1;
584     int InstrumentStatus = -1;
585 schoenebeck 225 int AudioOutputChannels = 0;
586     String AudioRouting;
587 schoenebeck 123
588 senkov 113 if (pEngine) {
589 senkov 117 EngineName = pEngine->EngineName();
590 schoenebeck 225 AudioOutputChannels = pEngine->Channels();
591 senkov 117 Volume = pEngine->Volume();
592 capela 133 InstrumentStatus = pEngine->InstrumentStatus();
593     InstrumentIndex = pEngine->InstrumentIndex();
594     if (InstrumentIndex != -1)
595 senkov 376 {
596 senkov 117 InstrumentFileName = pEngine->InstrumentFileName();
597 senkov 376 InstrumentName = pEngine->InstrumentName();
598     }
599 schoenebeck 225 for (int chan = 0; chan < pEngine->Channels(); chan++) {
600     if (AudioRouting != "") AudioRouting += ",";
601     AudioRouting += ToString(pEngine->OutputChannel(chan));
602     }
603 senkov 113 }
604 senkov 117
605     result.Add("ENGINE_NAME", EngineName);
606     result.Add("VOLUME", Volume);
607    
608 capela 143 //Some not-so-hardcoded stuff to make GUI look good
609     result.Add("AUDIO_OUTPUT_DEVICE", GetAudioOutputDeviceIndex(pSamplerChannel->GetAudioOutputDevice()));
610 schoenebeck 225 result.Add("AUDIO_OUTPUT_CHANNELS", AudioOutputChannels);
611     result.Add("AUDIO_OUTPUT_ROUTING", AudioRouting);
612 senkov 113
613 capela 159 result.Add("MIDI_INPUT_DEVICE", GetMidiInputDeviceIndex(pSamplerChannel->GetMidiInputDevice()));
614     result.Add("MIDI_INPUT_PORT", pSamplerChannel->GetMidiInputPort());
615 schoenebeck 274 if (pSamplerChannel->GetMidiInputChannel() == MidiInputPort::midi_chan_all) result.Add("MIDI_INPUT_CHANNEL", "ALL");
616     else result.Add("MIDI_INPUT_CHANNEL", pSamplerChannel->GetMidiInputChannel());
617 capela 159
618 senkov 117 result.Add("INSTRUMENT_FILE", InstrumentFileName);
619     result.Add("INSTRUMENT_NR", InstrumentIndex);
620 senkov 376 result.Add("INSTRUMENT_NAME", InstrumentName);
621 capela 133 result.Add("INSTRUMENT_STATUS", InstrumentStatus);
622 senkov 113 }
623     catch (LinuxSamplerException e) {
624 senkov 120 result.Error(e);
625 senkov 113 }
626 senkov 120 return result.Produce();
627 schoenebeck 35 }
628    
629     /**
630     * Will be called by the parser to get the amount of active voices on a
631     * particular sampler channel.
632     */
633 schoenebeck 53 String LSCPServer::GetVoiceCount(uint uiSamplerChannel) {
634     dmsg(2,("LSCPServer: GetVoiceCount(SamplerChannel=%d)\n", uiSamplerChannel));
635 senkov 120 LSCPResultSet result;
636 schoenebeck 53 try {
637     SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
638 schoenebeck 374 if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
639 schoenebeck 53 Engine* pEngine = pSamplerChannel->GetEngine();
640 schoenebeck 374 if (!pEngine) throw LinuxSamplerException("No engine loaded on sampler channel");
641 senkov 120 result.Add(pEngine->VoiceCount());
642 schoenebeck 53 }
643     catch (LinuxSamplerException e) {
644 senkov 120 result.Error(e);
645 schoenebeck 53 }
646 senkov 120 return result.Produce();
647 schoenebeck 35 }
648    
649     /**
650     * Will be called by the parser to get the amount of active disk streams on a
651     * particular sampler channel.
652     */
653 schoenebeck 53 String LSCPServer::GetStreamCount(uint uiSamplerChannel) {
654     dmsg(2,("LSCPServer: GetStreamCount(SamplerChannel=%d)\n", uiSamplerChannel));
655 senkov 120 LSCPResultSet result;
656 schoenebeck 53 try {
657     SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
658 schoenebeck 374 if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
659 schoenebeck 53 Engine* pEngine = pSamplerChannel->GetEngine();
660 schoenebeck 374 if (!pEngine) throw LinuxSamplerException("No engine loaded on sampler channel");
661 senkov 120 result.Add(pEngine->DiskStreamCount());
662 schoenebeck 53 }
663     catch (LinuxSamplerException e) {
664 senkov 120 result.Error(e);
665 schoenebeck 53 }
666 senkov 120 return result.Produce();
667 schoenebeck 35 }
668    
669     /**
670     * Will be called by the parser to get the buffer fill states of all disk
671     * streams on a particular sampler channel.
672     */
673 schoenebeck 53 String LSCPServer::GetBufferFill(fill_response_t ResponseType, uint uiSamplerChannel) {
674     dmsg(2,("LSCPServer: GetBufferFill(ResponseType=%d, SamplerChannel=%d)\n", ResponseType, uiSamplerChannel));
675 senkov 120 LSCPResultSet result;
676 schoenebeck 53 try {
677     SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
678 schoenebeck 374 if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
679 schoenebeck 53 Engine* pEngine = pSamplerChannel->GetEngine();
680 schoenebeck 374 if (!pEngine) throw LinuxSamplerException("No engine loaded on sampler channel");
681 senkov 129 if (!pEngine->DiskStreamSupported())
682     result.Add("NA");
683     else {
684     switch (ResponseType) {
685     case fill_response_bytes:
686     result.Add(pEngine->DiskStreamBufferFillBytes());
687     break;
688     case fill_response_percentage:
689     result.Add(pEngine->DiskStreamBufferFillPercentage());
690     break;
691     default:
692     throw LinuxSamplerException("Unknown fill response type");
693     }
694     }
695 schoenebeck 53 }
696     catch (LinuxSamplerException e) {
697 senkov 120 result.Error(e);
698 schoenebeck 53 }
699 senkov 120 return result.Produce();
700 schoenebeck 35 }
701    
702 schoenebeck 123 String LSCPServer::GetAvailableAudioOutputDrivers() {
703     dmsg(2,("LSCPServer: GetAvailableAudioOutputDrivers()\n"));
704 senkov 120 LSCPResultSet result;
705 schoenebeck 53 try {
706 schoenebeck 123 String s = AudioOutputDeviceFactory::AvailableDriversAsString();
707     result.Add(s);
708 schoenebeck 53 }
709     catch (LinuxSamplerException e) {
710 schoenebeck 123 result.Error(e);
711 schoenebeck 53 }
712 senkov 120 return result.Produce();
713 schoenebeck 35 }
714    
715 senkov 155 String LSCPServer::GetAvailableMidiInputDrivers() {
716     dmsg(2,("LSCPServer: GetAvailableMidiInputDrivers()\n"));
717     LSCPResultSet result;
718     try {
719     String s = MidiInputDeviceFactory::AvailableDriversAsString();
720     result.Add(s);
721     }
722     catch (LinuxSamplerException e) {
723     result.Error(e);
724     }
725     return result.Produce();
726     }
727    
728     String LSCPServer::GetMidiInputDriverInfo(String Driver) {
729     dmsg(2,("LSCPServer: GetMidiInputDriverInfo(Driver=%s)\n",Driver.c_str()));
730     LSCPResultSet result;
731     try {
732     result.Add("DESCRIPTION", MidiInputDeviceFactory::GetDriverDescription(Driver));
733     result.Add("VERSION", MidiInputDeviceFactory::GetDriverVersion(Driver));
734    
735     std::map<String,DeviceCreationParameter*> parameters = MidiInputDeviceFactory::GetAvailableDriverParameters(Driver);
736     if (parameters.size()) { // if there are parameters defined for this driver
737     String s;
738     std::map<String,DeviceCreationParameter*>::iterator iter = parameters.begin();
739     for (;iter != parameters.end(); iter++) {
740     if (s != "") s += ",";
741     s += iter->first;
742     }
743     result.Add("PARAMETERS", s);
744     }
745     }
746     catch (LinuxSamplerException e) {
747     result.Error(e);
748     }
749     return result.Produce();
750     }
751    
752 schoenebeck 123 String LSCPServer::GetAudioOutputDriverInfo(String Driver) {
753     dmsg(2,("LSCPServer: GetAudioOutputDriverInfo(Driver=%s)\n",Driver.c_str()));
754     LSCPResultSet result;
755     try {
756     result.Add("DESCRIPTION", AudioOutputDeviceFactory::GetDriverDescription(Driver));
757     result.Add("VERSION", AudioOutputDeviceFactory::GetDriverVersion(Driver));
758    
759     std::map<String,DeviceCreationParameter*> parameters = AudioOutputDeviceFactory::GetAvailableDriverParameters(Driver);
760     if (parameters.size()) { // if there are parameters defined for this driver
761     String s;
762     std::map<String,DeviceCreationParameter*>::iterator iter = parameters.begin();
763     for (;iter != parameters.end(); iter++) {
764     if (s != "") s += ",";
765     s += iter->first;
766     }
767     result.Add("PARAMETERS", s);
768     }
769     }
770     catch (LinuxSamplerException e) {
771     result.Error(e);
772     }
773     return result.Produce();
774     }
775    
776 senkov 155 String LSCPServer::GetMidiInputDriverParameterInfo(String Driver, String Parameter, std::map<String,String> DependencyList) {
777 schoenebeck 226 dmsg(2,("LSCPServer: GetMidiInputDriverParameterInfo(Driver=%s,Parameter=%s,DependencyListSize=%d)\n",Driver.c_str(),Parameter.c_str(),DependencyList.size()));
778 senkov 155 LSCPResultSet result;
779     try {
780     DeviceCreationParameter* pParameter = MidiInputDeviceFactory::GetDriverParameter(Driver, Parameter);
781     result.Add("TYPE", pParameter->Type());
782     result.Add("DESCRIPTION", pParameter->Description());
783 schoenebeck 223 result.Add("MANDATORY", pParameter->Mandatory());
784     result.Add("FIX", pParameter->Fix());
785     result.Add("MULTIPLICITY", pParameter->Multiplicity());
786 schoenebeck 226 optional<String> oDepends = pParameter->Depends();
787     optional<String> oDefault = pParameter->Default(DependencyList);
788     optional<String> oRangeMin = pParameter->RangeMin(DependencyList);
789     optional<String> oRangeMax = pParameter->RangeMax(DependencyList);
790     optional<String> oPossibilities = pParameter->Possibilities(DependencyList);
791     if (oDepends) result.Add("DEPENDS", *oDepends);
792     if (oDefault) result.Add("DEFAULT", *oDefault);
793     if (oRangeMin) result.Add("RANGE_MIN", *oRangeMin);
794     if (oRangeMax) result.Add("RANGE_MAX", *oRangeMax);
795     if (oPossibilities) result.Add("POSSIBILITIES", *oPossibilities);
796 senkov 155 }
797     catch (LinuxSamplerException e) {
798     result.Error(e);
799     }
800     return result.Produce();
801     }
802    
803 schoenebeck 123 String LSCPServer::GetAudioOutputDriverParameterInfo(String Driver, String Parameter, std::map<String,String> DependencyList) {
804 schoenebeck 226 dmsg(2,("LSCPServer: GetAudioOutputDriverParameterInfo(Driver=%s,Parameter=%s,DependencyListSize=%d)\n",Driver.c_str(),Parameter.c_str(),DependencyList.size()));
805 schoenebeck 123 LSCPResultSet result;
806     try {
807     DeviceCreationParameter* pParameter = AudioOutputDeviceFactory::GetDriverParameter(Driver, Parameter);
808     result.Add("TYPE", pParameter->Type());
809     result.Add("DESCRIPTION", pParameter->Description());
810 schoenebeck 223 result.Add("MANDATORY", pParameter->Mandatory());
811     result.Add("FIX", pParameter->Fix());
812     result.Add("MULTIPLICITY", pParameter->Multiplicity());
813 schoenebeck 226 optional<String> oDepends = pParameter->Depends();
814     optional<String> oDefault = pParameter->Default(DependencyList);
815     optional<String> oRangeMin = pParameter->RangeMin(DependencyList);
816     optional<String> oRangeMax = pParameter->RangeMax(DependencyList);
817     optional<String> oPossibilities = pParameter->Possibilities(DependencyList);
818     if (oDepends) result.Add("DEPENDS", *oDepends);
819     if (oDefault) result.Add("DEFAULT", *oDefault);
820     if (oRangeMin) result.Add("RANGE_MIN", *oRangeMin);
821     if (oRangeMax) result.Add("RANGE_MAX", *oRangeMax);
822     if (oPossibilities) result.Add("POSSIBILITIES", *oPossibilities);
823 schoenebeck 123 }
824     catch (LinuxSamplerException e) {
825     result.Error(e);
826     }
827     return result.Produce();
828     }
829    
830     String LSCPServer::GetAudioOutputDeviceCount() {
831     dmsg(2,("LSCPServer: GetAudioOutputDeviceCount()\n"));
832     LSCPResultSet result;
833     try {
834     uint count = pSampler->AudioOutputDevices();
835 senkov 138 result.Add(count); // success
836 schoenebeck 123 }
837     catch (LinuxSamplerException e) {
838     result.Error(e);
839     }
840     return result.Produce();
841     }
842    
843 senkov 155 String LSCPServer::GetMidiInputDeviceCount() {
844     dmsg(2,("LSCPServer: GetMidiInputDeviceCount()\n"));
845     LSCPResultSet result;
846     try {
847     uint count = pSampler->MidiInputDevices();
848     result.Add(count); // success
849     }
850     catch (LinuxSamplerException e) {
851     result.Error(e);
852     }
853     return result.Produce();
854     }
855    
856 schoenebeck 123 String LSCPServer::GetAudioOutputDevices() {
857     dmsg(2,("LSCPServer: GetAudioOutputDevices()\n"));
858     LSCPResultSet result;
859     try {
860     String s;
861     std::map<uint, AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
862     std::map<uint, AudioOutputDevice*>::iterator iter = devices.begin();
863     for (; iter != devices.end(); iter++) {
864     if (s != "") s += ",";
865     s += ToString(iter->first);
866     }
867     result.Add(s);
868     }
869     catch (LinuxSamplerException e) {
870     result.Error(e);
871     }
872     return result.Produce();
873     }
874    
875 senkov 155 String LSCPServer::GetMidiInputDevices() {
876     dmsg(2,("LSCPServer: GetMidiInputDevices()\n"));
877     LSCPResultSet result;
878     try {
879     String s;
880     std::map<uint, MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
881     std::map<uint, MidiInputDevice*>::iterator iter = devices.begin();
882     for (; iter != devices.end(); iter++) {
883     if (s != "") s += ",";
884     s += ToString(iter->first);
885     }
886     result.Add(s);
887     }
888     catch (LinuxSamplerException e) {
889     result.Error(e);
890     }
891     return result.Produce();
892     }
893    
894 schoenebeck 123 String LSCPServer::GetAudioOutputDeviceInfo(uint DeviceIndex) {
895     dmsg(2,("LSCPServer: GetAudioOutputDeviceInfo(DeviceIndex=%d)\n",DeviceIndex));
896     LSCPResultSet result;
897     try {
898     std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
899 schoenebeck 223 if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceIndex) + ".");
900 schoenebeck 123 AudioOutputDevice* pDevice = devices[DeviceIndex];
901 schoenebeck 221 result.Add("DRIVER", pDevice->Driver());
902 schoenebeck 123 std::map<String,DeviceCreationParameter*> parameters = pDevice->DeviceParameters();
903     std::map<String,DeviceCreationParameter*>::iterator iter = parameters.begin();
904     for (; iter != parameters.end(); iter++) {
905     result.Add(iter->first, iter->second->Value());
906     }
907     }
908     catch (LinuxSamplerException e) {
909     result.Error(e);
910     }
911     return result.Produce();
912     }
913    
914 senkov 155 String LSCPServer::GetMidiInputDeviceInfo(uint DeviceIndex) {
915     dmsg(2,("LSCPServer: GetMidiInputDeviceInfo(DeviceIndex=%d)\n",DeviceIndex));
916     LSCPResultSet result;
917     try {
918     std::map<uint,MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
919 schoenebeck 223 if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(DeviceIndex) + ".");
920 senkov 155 MidiInputDevice* pDevice = devices[DeviceIndex];
921 schoenebeck 221 result.Add("DRIVER", pDevice->Driver());
922 senkov 155 std::map<String,DeviceCreationParameter*> parameters = pDevice->DeviceParameters();
923     std::map<String,DeviceCreationParameter*>::iterator iter = parameters.begin();
924     for (; iter != parameters.end(); iter++) {
925     result.Add(iter->first, iter->second->Value());
926     }
927     }
928     catch (LinuxSamplerException e) {
929     result.Error(e);
930     }
931     return result.Produce();
932     }
933     String LSCPServer::GetMidiInputPortInfo(uint DeviceIndex, uint PortIndex) {
934     dmsg(2,("LSCPServer: GetMidiInputPortInfo(DeviceIndex=%d, PortIndex=%d)\n",DeviceIndex, PortIndex));
935     LSCPResultSet result;
936     try {
937 schoenebeck 223 // get MIDI input device
938 senkov 155 std::map<uint,MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
939 schoenebeck 223 if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(DeviceIndex) + ".");
940 senkov 155 MidiInputDevice* pDevice = devices[DeviceIndex];
941 schoenebeck 223
942     // get MIDI port
943 schoenebeck 221 MidiInputPort* pMidiInputPort = pDevice->GetPort(PortIndex);
944     if (!pMidiInputPort) throw LinuxSamplerException("There is no MIDI input port with index " + ToString(PortIndex) + ".");
945 schoenebeck 223
946     // return the values of all MIDI port parameters
947 schoenebeck 221 std::map<String,DeviceRuntimeParameter*> parameters = pMidiInputPort->PortParameters();
948     std::map<String,DeviceRuntimeParameter*>::iterator iter = parameters.begin();
949 senkov 155 for (; iter != parameters.end(); iter++) {
950     result.Add(iter->first, iter->second->Value());
951     }
952     }
953     catch (LinuxSamplerException e) {
954     result.Error(e);
955     }
956     return result.Produce();
957     }
958    
959 schoenebeck 123 String LSCPServer::GetAudioOutputChannelInfo(uint DeviceId, uint ChannelId) {
960     dmsg(2,("LSCPServer: GetAudioOutputChannelInfo(DeviceId=%d,ChannelId)\n",DeviceId,ChannelId));
961     LSCPResultSet result;
962     try {
963     // get audio output device
964     std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
965 schoenebeck 223 if (!devices.count(DeviceId)) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceId) + ".");
966 schoenebeck 123 AudioOutputDevice* pDevice = devices[DeviceId];
967    
968     // get audio channel
969     AudioChannel* pChannel = pDevice->Channel(ChannelId);
970 schoenebeck 374 if (!pChannel) throw LinuxSamplerException("Audio output device does not have audio channel " + ToString(ChannelId) + ".");
971 schoenebeck 123
972     // return the values of all audio channel parameters
973     std::map<String,DeviceRuntimeParameter*> parameters = pChannel->ChannelParameters();
974     std::map<String,DeviceRuntimeParameter*>::iterator iter = parameters.begin();
975     for (; iter != parameters.end(); iter++) {
976     result.Add(iter->first, iter->second->Value());
977     }
978     }
979     catch (LinuxSamplerException e) {
980     result.Error(e);
981     }
982     return result.Produce();
983     }
984    
985 senkov 185 String LSCPServer::GetMidiInputPortParameterInfo(uint DeviceId, uint PortId, String ParameterName) {
986     dmsg(2,("LSCPServer: GetMidiInputPortParameterInfo(DeviceId=%d,PortId=%d,ParameterName=%s)\n",DeviceId,PortId,ParameterName.c_str()));
987     LSCPResultSet result;
988     try {
989 schoenebeck 223 // get MIDI input device
990     std::map<uint,MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
991     if (!devices.count(DeviceId)) throw LinuxSamplerException("There is no midi input device with index " + ToString(DeviceId) + ".");
992     MidiInputDevice* pDevice = devices[DeviceId];
993 senkov 185
994 schoenebeck 221 // get midi port
995     MidiInputPort* pPort = pDevice->GetPort(PortId);
996     if (!pPort) throw LinuxSamplerException("Midi input device does not have port " + ToString(PortId) + ".");
997 senkov 185
998 schoenebeck 223 // get desired port parameter
999     std::map<String,DeviceRuntimeParameter*> parameters = pPort->PortParameters();
1000     if (!parameters.count(ParameterName)) throw LinuxSamplerException("Midi port does not provide a parameter '" + ParameterName + "'.");
1001     DeviceRuntimeParameter* pParameter = parameters[ParameterName];
1002 schoenebeck 203
1003 senkov 185 // return all fields of this audio channel parameter
1004     result.Add("TYPE", pParameter->Type());
1005     result.Add("DESCRIPTION", pParameter->Description());
1006     result.Add("FIX", pParameter->Fix());
1007     result.Add("MULTIPLICITY", pParameter->Multiplicity());
1008 schoenebeck 223 if (pParameter->RangeMin()) result.Add("RANGE_MIN", *pParameter->RangeMin());
1009     if (pParameter->RangeMax()) result.Add("RANGE_MAX", *pParameter->RangeMax());
1010     if (pParameter->Possibilities()) result.Add("POSSIBILITIES", *pParameter->Possibilities());
1011 senkov 185 }
1012     catch (LinuxSamplerException e) {
1013     result.Error(e);
1014     }
1015     return result.Produce();
1016     }
1017    
1018 schoenebeck 123 String LSCPServer::GetAudioOutputChannelParameterInfo(uint DeviceId, uint ChannelId, String ParameterName) {
1019     dmsg(2,("LSCPServer: GetAudioOutputChannelParameterInfo(DeviceId=%d,ChannelId=%d,ParameterName=%s)\n",DeviceId,ChannelId,ParameterName.c_str()));
1020     LSCPResultSet result;
1021     try {
1022     // get audio output device
1023     std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
1024 schoenebeck 223 if (!devices.count(DeviceId)) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceId) + ".");
1025 schoenebeck 123 AudioOutputDevice* pDevice = devices[DeviceId];
1026    
1027     // get audio channel
1028     AudioChannel* pChannel = pDevice->Channel(ChannelId);
1029 schoenebeck 374 if (!pChannel) throw LinuxSamplerException("Audio output device does not have audio channel " + ToString(ChannelId) + ".");
1030 schoenebeck 123
1031     // get desired audio channel parameter
1032     std::map<String,DeviceRuntimeParameter*> parameters = pChannel->ChannelParameters();
1033 schoenebeck 223 if (!parameters.count(ParameterName)) throw LinuxSamplerException("Audio channel does not provide a parameter '" + ParameterName + "'.");
1034 schoenebeck 123 DeviceRuntimeParameter* pParameter = parameters[ParameterName];
1035    
1036     // return all fields of this audio channel parameter
1037     result.Add("TYPE", pParameter->Type());
1038     result.Add("DESCRIPTION", pParameter->Description());
1039     result.Add("FIX", pParameter->Fix());
1040     result.Add("MULTIPLICITY", pParameter->Multiplicity());
1041 schoenebeck 223 if (pParameter->RangeMin()) result.Add("RANGE_MIN", *pParameter->RangeMin());
1042     if (pParameter->RangeMax()) result.Add("RANGE_MAX", *pParameter->RangeMax());
1043     if (pParameter->Possibilities()) result.Add("POSSIBILITIES", *pParameter->Possibilities());
1044 schoenebeck 123 }
1045     catch (LinuxSamplerException e) {
1046     result.Error(e);
1047     }
1048     return result.Produce();
1049     }
1050    
1051     String LSCPServer::SetAudioOutputChannelParameter(uint DeviceId, uint ChannelId, String ParamKey, String ParamVal) {
1052     dmsg(2,("LSCPServer: SetAudioOutputChannelParameter(DeviceId=%d,ChannelId=%d,ParamKey=%s,ParamVal=%s)\n",DeviceId,ChannelId,ParamKey.c_str(),ParamVal.c_str()));
1053     LSCPResultSet result;
1054     try {
1055     // get audio output device
1056     std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
1057 schoenebeck 223 if (!devices.count(DeviceId)) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceId) + ".");
1058 schoenebeck 123 AudioOutputDevice* pDevice = devices[DeviceId];
1059    
1060     // get audio channel
1061     AudioChannel* pChannel = pDevice->Channel(ChannelId);
1062 schoenebeck 374 if (!pChannel) throw LinuxSamplerException("Audio output device does not have audio channel " + ToString(ChannelId) + ".");
1063 schoenebeck 123
1064     // get desired audio channel parameter
1065     std::map<String,DeviceRuntimeParameter*> parameters = pChannel->ChannelParameters();
1066 schoenebeck 223 if (!parameters.count(ParamKey)) throw LinuxSamplerException("Audio channel does not provide a parameter '" + ParamKey + "'.");
1067 schoenebeck 123 DeviceRuntimeParameter* pParameter = parameters[ParamKey];
1068    
1069     // set new channel parameter value
1070     pParameter->SetValue(ParamVal);
1071     }
1072     catch (LinuxSamplerException e) {
1073     result.Error(e);
1074     }
1075     return result.Produce();
1076     }
1077    
1078     String LSCPServer::SetAudioOutputDeviceParameter(uint DeviceIndex, String ParamKey, String ParamVal) {
1079     dmsg(2,("LSCPServer: SetAudioOutputDeviceParameter(DeviceIndex=%d,ParamKey=%s,ParamVal=%s)\n",DeviceIndex,ParamKey.c_str(),ParamVal.c_str()));
1080     LSCPResultSet result;
1081     try {
1082     std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
1083 schoenebeck 223 if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceIndex) + ".");
1084 schoenebeck 123 AudioOutputDevice* pDevice = devices[DeviceIndex];
1085     std::map<String,DeviceCreationParameter*> parameters = pDevice->DeviceParameters();
1086 schoenebeck 223 if (!parameters.count(ParamKey)) throw LinuxSamplerException("Audio output device " + ToString(DeviceIndex) + " does not have a device parameter '" + ParamKey + "'");
1087 schoenebeck 123 parameters[ParamKey]->SetValue(ParamVal);
1088     }
1089     catch (LinuxSamplerException e) {
1090     result.Error(e);
1091     }
1092     return result.Produce();
1093     }
1094    
1095 senkov 155 String LSCPServer::SetMidiInputDeviceParameter(uint DeviceIndex, String ParamKey, String ParamVal) {
1096     dmsg(2,("LSCPServer: SetMidiOutputDeviceParameter(DeviceIndex=%d,ParamKey=%s,ParamVal=%s)\n",DeviceIndex,ParamKey.c_str(),ParamVal.c_str()));
1097     LSCPResultSet result;
1098     try {
1099     std::map<uint,MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
1100 schoenebeck 223 if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(DeviceIndex) + ".");
1101 senkov 155 MidiInputDevice* pDevice = devices[DeviceIndex];
1102     std::map<String,DeviceCreationParameter*> parameters = pDevice->DeviceParameters();
1103 schoenebeck 223 if (!parameters.count(ParamKey)) throw LinuxSamplerException("MIDI input device " + ToString(DeviceIndex) + " does not have a device parameter '" + ParamKey + "'");
1104 senkov 155 parameters[ParamKey]->SetValue(ParamVal);
1105     }
1106     catch (LinuxSamplerException e) {
1107     result.Error(e);
1108     }
1109     return result.Produce();
1110     }
1111    
1112     String LSCPServer::SetMidiInputPortParameter(uint DeviceIndex, uint PortIndex, String ParamKey, String ParamVal) {
1113     dmsg(2,("LSCPServer: SetMidiOutputDeviceParameter(DeviceIndex=%d,ParamKey=%s,ParamVal=%s)\n",DeviceIndex,ParamKey.c_str(),ParamVal.c_str()));
1114     LSCPResultSet result;
1115     try {
1116 schoenebeck 223 // get MIDI input device
1117 senkov 155 std::map<uint,MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
1118 schoenebeck 223 if (!devices.count(DeviceIndex)) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(DeviceIndex) + ".");
1119 senkov 155 MidiInputDevice* pDevice = devices[DeviceIndex];
1120 schoenebeck 223
1121     // get MIDI port
1122 schoenebeck 221 MidiInputPort* pMidiInputPort = pDevice->GetPort(PortIndex);
1123     if (!pMidiInputPort) throw LinuxSamplerException("There is no MIDI input port with index " + ToString(PortIndex) + ".");
1124 schoenebeck 223
1125     // set port parameter value
1126 schoenebeck 221 std::map<String,DeviceRuntimeParameter*> parameters = pMidiInputPort->PortParameters();
1127 schoenebeck 223 if (!parameters.count(ParamKey)) throw LinuxSamplerException("MIDI input device " + ToString(PortIndex) + " does not have a parameter '" + ParamKey + "'");
1128 senkov 155 parameters[ParamKey]->SetValue(ParamVal);
1129     }
1130     catch (LinuxSamplerException e) {
1131     result.Error(e);
1132     }
1133     return result.Produce();
1134     }
1135    
1136 schoenebeck 35 /**
1137     * Will be called by the parser to change the audio output channel for
1138     * playback on a particular sampler channel.
1139     */
1140 schoenebeck 123 String LSCPServer::SetAudioOutputChannel(uint ChannelAudioOutputChannel, uint AudioOutputDeviceInputChannel, uint uiSamplerChannel) {
1141     dmsg(2,("LSCPServer: SetAudioOutputChannel(ChannelAudioOutputChannel=%d, AudioOutputDeviceInputChannel=%d, SamplerChannel=%d)\n",ChannelAudioOutputChannel,AudioOutputDeviceInputChannel,uiSamplerChannel));
1142 schoenebeck 225 LSCPResultSet result;
1143     try {
1144     SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1145 schoenebeck 374 if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1146 schoenebeck 225 Engine* pEngine = pSamplerChannel->GetEngine();
1147     if (!pEngine) throw LinuxSamplerException("No engine deployed on sampler channel " + ToString(uiSamplerChannel));
1148 schoenebeck 374 if (!pSamplerChannel->GetAudioOutputDevice()) throw LinuxSamplerException("No audio output device connected to sampler channel " + ToString(uiSamplerChannel));
1149 schoenebeck 225 pEngine->SetOutputChannel(ChannelAudioOutputChannel, AudioOutputDeviceInputChannel);
1150     }
1151     catch (LinuxSamplerException e) {
1152     result.Error(e);
1153     }
1154     return result.Produce();
1155 schoenebeck 35 }
1156    
1157 capela 159 String LSCPServer::SetAudioOutputDevice(uint AudioDeviceId, uint uiSamplerChannel) {
1158     dmsg(2,("LSCPServer: SetAudiotOutputDevice(AudioDeviceId=%d, SamplerChannel=%d)\n",AudioDeviceId,uiSamplerChannel));
1159     LSCPResultSet result;
1160     try {
1161     SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1162 schoenebeck 374 if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1163 capela 159 std::map<uint, AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
1164 schoenebeck 223 if (!devices.count(AudioDeviceId)) throw LinuxSamplerException("There is no audio output device with index " + ToString(AudioDeviceId));
1165 capela 159 AudioOutputDevice* pDevice = devices[AudioDeviceId];
1166     pSamplerChannel->SetAudioOutputDevice(pDevice);
1167     }
1168     catch (LinuxSamplerException e) {
1169     result.Error(e);
1170     }
1171     return result.Produce();
1172     }
1173    
1174 capela 143 String LSCPServer::SetAudioOutputType(String AudioOutputDriver, uint uiSamplerChannel) {
1175     dmsg(2,("LSCPServer: SetAudioOutputType(String AudioOutputDriver=%s, SamplerChannel=%d)\n",AudioOutputDriver.c_str(),uiSamplerChannel));
1176     LSCPResultSet result;
1177     try {
1178     SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1179 schoenebeck 374 if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1180 capela 143 // Driver type name aliasing...
1181 schoenebeck 226 if (AudioOutputDriver == "Alsa") AudioOutputDriver = "ALSA";
1182     if (AudioOutputDriver == "Jack") AudioOutputDriver = "JACK";
1183 capela 143 // Check if there's one audio output device already created
1184     // for the intended audio driver type (AudioOutputDriver)...
1185     AudioOutputDevice *pDevice = NULL;
1186     std::map<uint, AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
1187     std::map<uint, AudioOutputDevice*>::iterator iter = devices.begin();
1188     for (; iter != devices.end(); iter++) {
1189     if ((iter->second)->Driver() == AudioOutputDriver) {
1190     pDevice = iter->second;
1191     break;
1192     }
1193     }
1194     // If it doesn't exist, create a new one with default parameters...
1195     if (pDevice == NULL) {
1196     std::map<String,String> params;
1197     pDevice = pSampler->CreateAudioOutputDevice(AudioOutputDriver, params);
1198     }
1199     // Must have a device...
1200     if (pDevice == NULL)
1201     throw LinuxSamplerException("Internal error: could not create audio output device.");
1202     // Set it as the current channel device...
1203     pSamplerChannel->SetAudioOutputDevice(pDevice);
1204     }
1205     catch (LinuxSamplerException e) {
1206     result.Error(e);
1207     }
1208     return result.Produce();
1209     }
1210    
1211 capela 159 String LSCPServer::SetMIDIInputPort(uint MIDIPort, uint uiSamplerChannel) {
1212     dmsg(2,("LSCPServer: SetMIDIInputPort(MIDIPort=%d, SamplerChannel=%d)\n",MIDIPort,uiSamplerChannel));
1213 senkov 120 LSCPResultSet result;
1214 schoenebeck 53 try {
1215     SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1216 schoenebeck 374 if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1217 capela 159 pSamplerChannel->SetMidiInputPort(MIDIPort);
1218 schoenebeck 53 }
1219     catch (LinuxSamplerException e) {
1220 senkov 120 result.Error(e);
1221 schoenebeck 53 }
1222 senkov 120 return result.Produce();
1223 schoenebeck 53 }
1224    
1225 capela 159 String LSCPServer::SetMIDIInputChannel(uint MIDIChannel, uint uiSamplerChannel) {
1226     dmsg(2,("LSCPServer: SetMIDIInputChannel(MIDIChannel=%d, SamplerChannel=%d)\n",MIDIChannel,uiSamplerChannel));
1227 senkov 120 LSCPResultSet result;
1228 senkov 68 try {
1229     SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1230 schoenebeck 374 if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1231 schoenebeck 221 pSamplerChannel->SetMidiInputChannel((MidiInputPort::midi_chan_t) MIDIChannel);
1232 senkov 68 }
1233     catch (LinuxSamplerException e) {
1234 senkov 120 result.Error(e);
1235 senkov 68 }
1236 senkov 120 return result.Produce();
1237 schoenebeck 35 }
1238    
1239 capela 159 String LSCPServer::SetMIDIInputDevice(uint MIDIDeviceId, uint uiSamplerChannel) {
1240     dmsg(2,("LSCPServer: SetMIDIInputDevice(MIDIDeviceId=%d, SamplerChannel=%d)\n",MIDIDeviceId,uiSamplerChannel));
1241 schoenebeck 123 LSCPResultSet result;
1242     try {
1243 capela 159 SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1244 schoenebeck 374 if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1245 capela 159 std::map<uint, MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
1246 schoenebeck 223 if (!devices.count(MIDIDeviceId)) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(MIDIDeviceId));
1247 capela 159 MidiInputDevice* pDevice = devices[MIDIDeviceId];
1248     pSamplerChannel->SetMidiInputDevice(pDevice);
1249 schoenebeck 123 }
1250     catch (LinuxSamplerException e) {
1251     result.Error(e);
1252     }
1253     return result.Produce();
1254     }
1255    
1256 capela 159 String LSCPServer::SetMIDIInputType(String MidiInputDriver, uint uiSamplerChannel) {
1257     dmsg(2,("LSCPServer: SetMIDIInputType(String MidiInputDriver=%s, SamplerChannel=%d)\n",MidiInputDriver.c_str(),uiSamplerChannel));
1258     LSCPResultSet result;
1259     try {
1260     SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1261 schoenebeck 374 if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1262 capela 159 // Driver type name aliasing...
1263 schoenebeck 226 if (MidiInputDriver == "Alsa") MidiInputDriver = "ALSA";
1264 capela 159 // Check if there's one MIDI input device already created
1265     // for the intended MIDI driver type (MidiInputDriver)...
1266     MidiInputDevice *pDevice = NULL;
1267     std::map<uint, MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
1268     std::map<uint, MidiInputDevice*>::iterator iter = devices.begin();
1269     for (; iter != devices.end(); iter++) {
1270     if ((iter->second)->Driver() == MidiInputDriver) {
1271     pDevice = iter->second;
1272     break;
1273     }
1274     }
1275     // If it doesn't exist, create a new one with default parameters...
1276     if (pDevice == NULL) {
1277     std::map<String,String> params;
1278     pDevice = pSampler->CreateMidiInputDevice(MidiInputDriver, params);
1279     // Make it with at least one initial port.
1280     std::map<String,DeviceCreationParameter*> parameters = pDevice->DeviceParameters();
1281 schoenebeck 221 parameters["PORTS"]->SetValue("1");
1282 capela 159 }
1283     // Must have a device...
1284     if (pDevice == NULL)
1285     throw LinuxSamplerException("Internal error: could not create MIDI input device.");
1286     // Set it as the current channel device...
1287     pSamplerChannel->SetMidiInputDevice(pDevice);
1288     }
1289     catch (LinuxSamplerException e) {
1290     result.Error(e);
1291     }
1292     return result.Produce();
1293     }
1294    
1295 schoenebeck 35 /**
1296 capela 159 * Will be called by the parser to change the MIDI input device, port and channel on which
1297     * engine of a particular sampler channel should listen to.
1298     */
1299     String LSCPServer::SetMIDIInput(uint MIDIDeviceId, uint MIDIPort, uint MIDIChannel, uint uiSamplerChannel) {
1300     dmsg(2,("LSCPServer: SetMIDIInput(MIDIDeviceId=%d, MIDIPort=%d, MIDIChannel=%d, SamplerChannel=%d)\n", MIDIDeviceId, MIDIPort, MIDIChannel, uiSamplerChannel));
1301     LSCPResultSet result;
1302     try {
1303     SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1304 schoenebeck 374 if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1305 capela 159 std::map<uint, MidiInputDevice*> devices = pSampler->GetMidiInputDevices();
1306 schoenebeck 223 if (!devices.count(MIDIDeviceId)) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(MIDIDeviceId));
1307 capela 159 MidiInputDevice* pDevice = devices[MIDIDeviceId];
1308 schoenebeck 221 pSamplerChannel->SetMidiInput(pDevice, MIDIPort, (MidiInputPort::midi_chan_t) MIDIChannel);
1309 capela 159 }
1310     catch (LinuxSamplerException e) {
1311     result.Error(e);
1312     }
1313     return result.Produce();
1314     }
1315    
1316     /**
1317 schoenebeck 35 * Will be called by the parser to change the global volume factor on a
1318     * particular sampler channel.
1319     */
1320 schoenebeck 225 String LSCPServer::SetVolume(double dVolume, uint uiSamplerChannel) {
1321     dmsg(2,("LSCPServer: SetVolume(Volume=%f, SamplerChannel=%d)\n", dVolume, uiSamplerChannel));
1322 senkov 120 LSCPResultSet result;
1323 schoenebeck 53 try {
1324     SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1325 schoenebeck 374 if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1326 schoenebeck 53 Engine* pEngine = pSamplerChannel->GetEngine();
1327 schoenebeck 374 if (!pEngine) throw LinuxSamplerException("No engine loaded on sampler channel");
1328 schoenebeck 225 pEngine->Volume(dVolume);
1329 schoenebeck 53 }
1330     catch (LinuxSamplerException e) {
1331 senkov 120 result.Error(e);
1332 schoenebeck 53 }
1333 senkov 120 return result.Produce();
1334 schoenebeck 35 }
1335    
1336     /**
1337     * Will be called by the parser to reset a particular sampler channel.
1338     */
1339 schoenebeck 53 String LSCPServer::ResetChannel(uint uiSamplerChannel) {
1340     dmsg(2,("LSCPServer: ResetChannel(SamplerChannel=%d)\n", uiSamplerChannel));
1341 senkov 120 LSCPResultSet result;
1342 schoenebeck 53 try {
1343     SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
1344 schoenebeck 374 if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel));
1345 schoenebeck 53 Engine* pEngine = pSamplerChannel->GetEngine();
1346 schoenebeck 374 if (!pEngine) throw LinuxSamplerException("No engine loaded on sampler channel");
1347 schoenebeck 53 pEngine->Reset();
1348     }
1349     catch (LinuxSamplerException e) {
1350 senkov 120 result.Error(e);
1351 schoenebeck 53 }
1352 senkov 120 return result.Produce();
1353 schoenebeck 35 }
1354    
1355     /**
1356 schoenebeck 212 * Will be called by the parser to reset the whole sampler.
1357     */
1358     String LSCPServer::ResetSampler() {
1359     dmsg(2,("LSCPServer: ResetSampler()\n"));
1360     pSampler->Reset();
1361     LSCPResultSet result;
1362     return result.Produce();
1363     }
1364    
1365     /**
1366 schoenebeck 35 * Will be called by the parser to subscribe a client (frontend) on the
1367     * server for receiving event messages.
1368     */
1369 senkov 170 String LSCPServer::SubscribeNotification(LSCPEvent::event_t type) {
1370     dmsg(2,("LSCPServer: SubscribeNotification(Event=%s)\n", LSCPEvent::Name(type).c_str()));
1371     LSCPResultSet result;
1372     SubscriptionMutex.Lock();
1373     eventSubscriptions[type].push_back(currentSocket);
1374     SubscriptionMutex.Unlock();
1375     return result.Produce();
1376 schoenebeck 35 }
1377    
1378     /**
1379     * Will be called by the parser to unsubscribe a client on the server
1380     * for not receiving further event messages.
1381     */
1382 senkov 170 String LSCPServer::UnsubscribeNotification(LSCPEvent::event_t type) {
1383     dmsg(2,("LSCPServer: UnsubscribeNotification(Event=%s)\n", LSCPEvent::Name(type).c_str()));
1384     LSCPResultSet result;
1385     SubscriptionMutex.Lock();
1386     eventSubscriptions[type].remove(currentSocket);
1387     SubscriptionMutex.Unlock();
1388     return result.Produce();
1389 schoenebeck 35 }
1390 capela 133
1391 schoenebeck 210 /**
1392     * Will be called by the parser to enable or disable echo mode; if echo
1393     * mode is enabled, all commands from the client will (immediately) be
1394     * echoed back to the client.
1395     */
1396     String LSCPServer::SetEcho(yyparse_param_t* pSession, double boolean_value) {
1397     dmsg(2,("LSCPServer: SetEcho(val=%f)\n", boolean_value));
1398     LSCPResultSet result;
1399     try {
1400     if (boolean_value == 0) pSession->bVerbose = false;
1401     else if (boolean_value == 1) pSession->bVerbose = true;
1402     else throw LinuxSamplerException("Not a boolean value, must either be 0 or 1");
1403     }
1404     catch (LinuxSamplerException e) {
1405     result.Error(e);
1406     }
1407     return result.Produce();
1408     }

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