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

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Revision 123 - (hide annotations) (download)
Mon Jun 14 19:33:16 2004 UTC (19 years, 9 months ago) by schoenebeck
File size: 28907 byte(s)
* src/common: added template class 'optional<>' which can be used e.g. as
  return type whenever a value might be returned, but don't has to; this
  template class pretty much acts like a pointer of the given type, but is
  much more safer than a simple pointer
* src/audiodriver: added static class AudioDeviceFactory to create audio
  devices at runtime by using a string and to obtain driver informations
  of drivers at runtime, driver classes should simply use the macro
  REGISTER_AUDIO_OUTPUT_DRIVER(DriverName,DriverClass) in their cpp file
  to register the driver to LinuxSampler (no changes needed anymore in the
  LS code to add a new audio output driver)
* src/drivers: added classes to dynamically manage driver parameters; there
  are two different kinds of parameters: parameters which are need to
  create a new device (DeviceCreationParameterX) used to e.g. create an
  audio output device or a MIDI input device and parameters which are only
  available at runtime, means when a device is already created
  (DeviceRuntimeParameterX) which will be e.g. used as audio channel
  parameters and MIDI port parameters
* src/linuxsampler.cpp: all registered audio output drivers will be shown
  on the console on startup
* src/network: implemented configuration of audio output devices via LSCP

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 35 * *
7     * This program is free software; you can redistribute it and/or modify *
8     * it under the terms of the GNU General Public License as published by *
9     * the Free Software Foundation; either version 2 of the License, or *
10     * (at your option) any later version. *
11     * *
12     * This program is distributed in the hope that it will be useful, *
13     * but WITHOUT ANY WARRANTY; without even the implied warranty of *
14     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
15     * GNU General Public License for more details. *
16     * *
17     * You should have received a copy of the GNU General Public License *
18     * along with this program; if not, write to the Free Software *
19     * Foundation, Inc., 59 Temple Place, Suite 330, Boston, *
20     * MA 02111-1307 USA *
21     ***************************************************************************/
22    
23     #include "lscpserver.h"
24 senkov 113 #include "lscpresultset.h"
25 schoenebeck 35
26 schoenebeck 53 #include "../engines/gig/Engine.h"
27 schoenebeck 123 #include "../audiodriver/AudioOutputDeviceFactory.h"
28 schoenebeck 53
29     LSCPServer::LSCPServer(Sampler* pSampler) : Thread(false, 0, -4) {
30     this->pSampler = pSampler;
31 schoenebeck 35 }
32    
33     int LSCPServer::Main() {
34     hSocket = socket(AF_INET, SOCK_STREAM, 0);
35     if (hSocket < 0) {
36     std::cerr << "LSCPServer: Could not create server socket." << std::endl;
37 schoenebeck 53 //return -1;
38     exit(EXIT_FAILURE);
39 schoenebeck 35 }
40    
41     SocketAddress.sin_family = AF_INET;
42     SocketAddress.sin_port = htons(LSCP_PORT);
43     SocketAddress.sin_addr.s_addr = htonl(INADDR_ANY);
44    
45     if (bind(hSocket, (sockaddr*) &SocketAddress, sizeof(sockaddr_in)) < 0) {
46     std::cerr << "LSCPServer: Could not bind server socket." << std::endl;
47     close(hSocket);
48 schoenebeck 53 //return -1;
49     exit(EXIT_FAILURE);
50 schoenebeck 35 }
51    
52     listen(hSocket, 1);
53     dmsg(1,("LSCPServer: Server running.\n")); // server running
54    
55     // now wait for client connections and handle their requests
56     sockaddr_in client;
57     int length = sizeof(client);
58     while (true) {
59     hSession = accept(hSocket, (sockaddr*) &client, (socklen_t*) &length);
60     if (hSession < 0) {
61     std::cerr << "LSCPServer: Client connection failed." << std::endl;
62     close(hSocket);
63 schoenebeck 53 //return -1;
64     exit(EXIT_FAILURE);
65 schoenebeck 35 }
66    
67     dmsg(1,("LSCPServer: Client connection established.\n"));
68     //send(hSession, "Welcome!\r\n", 10, 0);
69    
70     // Parser invocation
71     yyparse_param_t yyparse_param;
72     yyparse_param.pServer = this;
73     yylex_init(&yyparse_param.pScanner);
74     while (yyparse(&yyparse_param) == LSCP_SYNTAX_ERROR); // recall parser in case of syntax error
75     yylex_destroy(yyparse_param.pScanner);
76    
77     close(hSession);
78     dmsg(1,("LSCPServer: Client connection terminated.\n"));
79     }
80     }
81    
82     /**
83     * Will be called by the parser whenever it wants to send an answer to the
84     * client / frontend.
85     *
86     * @param ReturnMessage - message that will be send to the client
87     */
88     void LSCPServer::AnswerClient(String ReturnMessage) {
89     dmsg(2,("LSCPServer::AnswerClient(ReturnMessage=%s)", ReturnMessage.c_str()));
90     send(hSession, ReturnMessage.c_str(), ReturnMessage.size(), 0);
91     }
92    
93 schoenebeck 123 String LSCPServer::CreateAudioOutputDevice(String Driver, std::map<String,String> Parameters) {
94     dmsg(2,("LSCPServer: CreateAudioOutputDevice(Driver=%s)\n", Driver.c_str()));
95     LSCPResultSet result;
96     try {
97     AudioOutputDevice* pDevice = pSampler->CreateAudioOutputDevice(Driver, Parameters);
98     std::map<uint, AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
99     // search for the created device to get its index
100     int index = -1;
101     std::map<uint, AudioOutputDevice*>::iterator iter = devices.begin();
102     for (; iter != devices.end(); iter++) {
103     if (iter->second == pDevice) {
104     index = iter->first;
105     break;
106     }
107     }
108     if (index == -1) throw LinuxSamplerException("Internal error: could not find created audio output device.");
109     result = index; // success
110     }
111     catch (LinuxSamplerException e) {
112     result.Error(e);
113     }
114     return result.Produce();
115     }
116    
117     String LSCPServer::DestroyAudioOutputDevice(uint DeviceIndex) {
118     dmsg(2,("LSCPServer: DestroyAudioOutputDevice(DeviceIndex=%d)\n", DeviceIndex));
119     LSCPResultSet result;
120     try {
121     std::map<uint, AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
122     if (!devices[DeviceIndex]) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceIndex) + ".");
123     AudioOutputDevice* pDevice = devices[DeviceIndex];
124     pSampler->DestroyAudioOutputDevice(pDevice);
125     }
126     catch (LinuxSamplerException e) {
127     result.Error(e);
128     }
129     return result.Produce();
130     }
131    
132 schoenebeck 35 /**
133     * Will be called by the parser to load an instrument.
134     */
135 schoenebeck 53 String LSCPServer::LoadInstrument(String Filename, uint uiInstrument, uint uiSamplerChannel) {
136     dmsg(2,("LSCPServer: LoadInstrument(Filename=%s,Instrument=%d,SamplerChannel=%d)\n", Filename.c_str(), uiInstrument, uiSamplerChannel));
137 senkov 120 LSCPResultSet result;
138 schoenebeck 53 try {
139     SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
140     if (!pSamplerChannel) throw LinuxSamplerException("Index out of bounds");
141     Engine* pEngine = pSamplerChannel->GetEngine();
142     if (!pEngine) throw LinuxSamplerException("No engine loaded on channel");
143     pEngine->LoadInstrument(Filename.c_str(), uiInstrument);
144     }
145     catch (LinuxSamplerException e) {
146 senkov 120 result.Error(e);
147 schoenebeck 53 }
148 senkov 120 return result.Produce();
149 schoenebeck 35 }
150    
151     /**
152     * Will be called by the parser to load and deploy an engine.
153     */
154 schoenebeck 53 String LSCPServer::LoadEngine(String EngineName, uint uiSamplerChannel) {
155     dmsg(2,("LSCPServer: LoadEngine(EngineName=%s,SamplerChannel=%d)\n", EngineName.c_str(), uiSamplerChannel));
156 senkov 120 LSCPResultSet result;
157 schoenebeck 53 try {
158 schoenebeck 64 Engine::type_t type;
159 senkov 120 if ((EngineName == "GigEngine") || (EngineName == "gig")) type = Engine::type_gig;
160 schoenebeck 53 else throw LinuxSamplerException("Unknown engine type");
161     SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
162     if (!pSamplerChannel) throw LinuxSamplerException("Index out of bounds");
163     pSamplerChannel->LoadEngine(type);
164     }
165     catch (LinuxSamplerException e) {
166 senkov 120 result.Error(e);
167 schoenebeck 53 }
168 senkov 120 return result.Produce();
169 schoenebeck 35 }
170    
171     /**
172     * Will be called by the parser to get the amount of sampler channels.
173     */
174     String LSCPServer::GetChannels() {
175     dmsg(2,("LSCPServer: GetChannels()\n"));
176 senkov 120 LSCPResultSet result;
177     result.Add(pSampler->SamplerChannels());
178     return result.Produce();
179 schoenebeck 35 }
180    
181     /**
182     * Will be called by the parser to add a sampler channel.
183     */
184     String LSCPServer::AddChannel() {
185     dmsg(2,("LSCPServer: AddChannel()\n"));
186 schoenebeck 53 SamplerChannel* pSamplerChannel = pSampler->AddSamplerChannel();
187 senkov 120 LSCPResultSet result(pSamplerChannel->Index());
188     return result.Produce();
189 schoenebeck 35 }
190    
191     /**
192     * Will be called by the parser to remove a sampler channel.
193     */
194 schoenebeck 53 String LSCPServer::RemoveChannel(uint uiSamplerChannel) {
195     dmsg(2,("LSCPServer: RemoveChannel(SamplerChannel=%d)\n", uiSamplerChannel));
196 senkov 120 LSCPResultSet result;
197 schoenebeck 53 pSampler->RemoveSamplerChannel(uiSamplerChannel);
198 senkov 120 return result.Produce();
199 schoenebeck 35 }
200    
201     /**
202     * Will be called by the parser to get all available engines.
203     */
204     String LSCPServer::GetAvailableEngines() {
205     dmsg(2,("LSCPServer: GetAvailableEngines()\n"));
206 senkov 120 LSCPResultSet result("GigEngine");
207     return result.Produce();
208 schoenebeck 35 }
209    
210     /**
211     * Will be called by the parser to get descriptions for a particular engine.
212     */
213     String LSCPServer::GetEngineInfo(String EngineName) {
214     dmsg(2,("LSCPServer: GetEngineInfo(EngineName=%s)\n", EngineName.c_str()));
215 senkov 120 LSCPResultSet result;
216 schoenebeck 53 try {
217 senkov 120 if ((EngineName == "GigEngine") || (EngineName == "gig")) {
218 schoenebeck 53 Engine* pEngine = new LinuxSampler::gig::Engine;
219 senkov 120 result.Add(pEngine->Description());
220 schoenebeck 123 result.Add(pEngine->Version());
221 schoenebeck 53 delete pEngine;
222     }
223     else throw LinuxSamplerException("Unknown engine type");
224     }
225     catch (LinuxSamplerException e) {
226 senkov 120 result.Error(e);
227 schoenebeck 53 }
228 senkov 120 return result.Produce();
229 schoenebeck 35 }
230    
231     /**
232     * Will be called by the parser to get informations about a particular
233     * sampler channel.
234     */
235 schoenebeck 53 String LSCPServer::GetChannelInfo(uint uiSamplerChannel) {
236     dmsg(2,("LSCPServer: GetChannelInfo(SamplerChannel=%d)\n", uiSamplerChannel));
237 senkov 120 LSCPResultSet result;
238 senkov 113 try {
239     SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
240     if (!pSamplerChannel) throw LinuxSamplerException("Index out of bounds");
241     Engine* pEngine = pSamplerChannel->GetEngine();
242 schoenebeck 123
243 senkov 117 //Defaults values
244     String EngineName = "NONE";
245     float Volume = 0;
246     String InstrumentFileName = "NONE";
247     int InstrumentIndex = 0;
248 schoenebeck 123
249 senkov 113 if (pEngine) {
250 senkov 117 EngineName = pEngine->EngineName();
251     Volume = pEngine->Volume();
252     int iIdx = pEngine->InstrumentIndex();
253     if (iIdx != -1) {
254     InstrumentFileName = pEngine->InstrumentFileName();
255     InstrumentIndex = iIdx;
256     }
257 senkov 113 }
258 senkov 117
259     result.Add("ENGINE_NAME", EngineName);
260     result.Add("VOLUME", Volume);
261    
262 senkov 113 //Some hardcoded stuff for now to make GUI look good
263     result.Add("AUDIO_OUTPUT_DEVICE", "0");
264     result.Add("AUDIO_OUTPUT_CHANNELS", "2");
265     result.Add("AUDIO_OUTPUT_ROUTING", "0,1");
266    
267 senkov 117 result.Add("INSTRUMENT_FILE", InstrumentFileName);
268     result.Add("INSTRUMENT_NR", InstrumentIndex);
269 schoenebeck 123
270 senkov 117 //Some more hardcoded stuff for now to make GUI look good
271 senkov 113 result.Add("MIDI_INPUT_DEVICE", "0");
272     result.Add("MIDI_INPUT_PORT", "0");
273     result.Add("MIDI_INPUT_CHANNEL", "1");
274     }
275     catch (LinuxSamplerException e) {
276 senkov 120 result.Error(e);
277 senkov 113 }
278 senkov 120 return result.Produce();
279 schoenebeck 35 }
280    
281     /**
282     * Will be called by the parser to get the amount of active voices on a
283     * particular sampler channel.
284     */
285 schoenebeck 53 String LSCPServer::GetVoiceCount(uint uiSamplerChannel) {
286     dmsg(2,("LSCPServer: GetVoiceCount(SamplerChannel=%d)\n", uiSamplerChannel));
287 senkov 120 LSCPResultSet result;
288 schoenebeck 53 try {
289     SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
290     if (!pSamplerChannel) throw LinuxSamplerException("Index out of bounds");
291     Engine* pEngine = pSamplerChannel->GetEngine();
292     if (!pEngine) throw LinuxSamplerException("No engine loaded on channel");
293 senkov 120 result.Add(pEngine->VoiceCount());
294 schoenebeck 53 }
295     catch (LinuxSamplerException e) {
296 senkov 120 result.Error(e);
297 schoenebeck 53 }
298 senkov 120 return result.Produce();
299 schoenebeck 35 }
300    
301     /**
302     * Will be called by the parser to get the amount of active disk streams on a
303     * particular sampler channel.
304     */
305 schoenebeck 53 String LSCPServer::GetStreamCount(uint uiSamplerChannel) {
306     dmsg(2,("LSCPServer: GetStreamCount(SamplerChannel=%d)\n", uiSamplerChannel));
307 senkov 120 LSCPResultSet result;
308 schoenebeck 53 try {
309     SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
310     if (!pSamplerChannel) throw LinuxSamplerException("Index out of bounds");
311     Engine* pEngine = pSamplerChannel->GetEngine();
312     if (!pEngine) throw LinuxSamplerException("No engine loaded on channel");
313 senkov 120 result.Add(pEngine->DiskStreamCount());
314 schoenebeck 53 }
315     catch (LinuxSamplerException e) {
316 senkov 120 result.Error(e);
317 schoenebeck 53 }
318 senkov 120 return result.Produce();
319 schoenebeck 35 }
320    
321     /**
322     * Will be called by the parser to get the buffer fill states of all disk
323     * streams on a particular sampler channel.
324     */
325 schoenebeck 53 String LSCPServer::GetBufferFill(fill_response_t ResponseType, uint uiSamplerChannel) {
326     dmsg(2,("LSCPServer: GetBufferFill(ResponseType=%d, SamplerChannel=%d)\n", ResponseType, uiSamplerChannel));
327 senkov 120 LSCPResultSet result;
328 schoenebeck 53 try {
329     SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
330     if (!pSamplerChannel) throw LinuxSamplerException("Index out of bounds");
331     Engine* pEngine = pSamplerChannel->GetEngine();
332     if (!pEngine) throw LinuxSamplerException("No engine loaded on channel");
333 senkov 120 if (!pEngine->DiskStreamSupported()) return "NA\r\n"; //FIXME: Update resultset class to support "NA"
334 schoenebeck 53 switch (ResponseType) {
335     case fill_response_bytes:
336 senkov 120 result.Add(pEngine->DiskStreamBufferFillBytes());
337 senkov 121 break;
338 schoenebeck 53 case fill_response_percentage:
339 senkov 120 result.Add(pEngine->DiskStreamBufferFillPercentage());
340 senkov 121 break;
341 schoenebeck 53 default:
342     throw LinuxSamplerException("Unknown fill response type");
343     }
344     }
345     catch (LinuxSamplerException e) {
346 senkov 120 result.Error(e);
347 schoenebeck 53 }
348 senkov 120 return result.Produce();
349 schoenebeck 35 }
350    
351 schoenebeck 123 String LSCPServer::GetAvailableAudioOutputDrivers() {
352     dmsg(2,("LSCPServer: GetAvailableAudioOutputDrivers()\n"));
353 senkov 120 LSCPResultSet result;
354 schoenebeck 53 try {
355 schoenebeck 123 String s = AudioOutputDeviceFactory::AvailableDriversAsString();
356     result.Add(s);
357 schoenebeck 53 }
358     catch (LinuxSamplerException e) {
359 schoenebeck 123 result.Error(e);
360 schoenebeck 53 }
361 senkov 120 return result.Produce();
362 schoenebeck 35 }
363    
364 schoenebeck 123 String LSCPServer::GetAudioOutputDriverInfo(String Driver) {
365     dmsg(2,("LSCPServer: GetAudioOutputDriverInfo(Driver=%s)\n",Driver.c_str()));
366     LSCPResultSet result;
367     try {
368     result.Add("DESCRIPTION", AudioOutputDeviceFactory::GetDriverDescription(Driver));
369     result.Add("VERSION", AudioOutputDeviceFactory::GetDriverVersion(Driver));
370    
371     std::map<String,DeviceCreationParameter*> parameters = AudioOutputDeviceFactory::GetAvailableDriverParameters(Driver);
372     if (parameters.size()) { // if there are parameters defined for this driver
373     String s;
374     std::map<String,DeviceCreationParameter*>::iterator iter = parameters.begin();
375     for (;iter != parameters.end(); iter++) {
376     if (s != "") s += ",";
377     s += iter->first;
378     }
379     result.Add("PARAMETERS", s);
380     }
381     }
382     catch (LinuxSamplerException e) {
383     result.Error(e);
384     }
385     return result.Produce();
386     }
387    
388     String LSCPServer::GetAudioOutputDriverParameterInfo(String Driver, String Parameter, std::map<String,String> DependencyList) {
389     dmsg(2,("LSCPServer: GetAudioOutputDriverParameterInfo(Driver=%s,Parameter=%s)\n",Driver.c_str(),Parameter.c_str()));
390     LSCPResultSet result;
391     try {
392     DeviceCreationParameter* pParameter = AudioOutputDeviceFactory::GetDriverParameter(Driver, Parameter);
393     result.Add("TYPE", pParameter->Type());
394     result.Add("DESCRIPTION", pParameter->Description());
395     result.Add("MANDATORY", pParameter->Mandatory());
396     result.Add("FIX", pParameter->Fix());
397     result.Add("MULTIPLICITY", pParameter->Multiplicity());
398     if (pParameter->Depends()) result.Add("DEPENDS", pParameter->Depends());
399     if (pParameter->Default()) result.Add("DEFAULT", pParameter->Default());
400     if (pParameter->RangeMin()) result.Add("RANGE_MIN", pParameter->RangeMin());
401     if (pParameter->RangeMax()) result.Add("RANGE_MAX", pParameter->RangeMax());
402     if (pParameter->Possibilities()) result.Add("POSSIBILITIES", pParameter->Possibilities());
403     }
404     catch (LinuxSamplerException e) {
405     result.Error(e);
406     }
407     return result.Produce();
408     }
409    
410     String LSCPServer::GetAudioOutputDeviceCount() {
411     dmsg(2,("LSCPServer: GetAudioOutputDeviceCount()\n"));
412     LSCPResultSet result;
413     try {
414     uint count = pSampler->AudioOutputDevices();
415     result = count; // success
416     }
417     catch (LinuxSamplerException e) {
418     result.Error(e);
419     }
420     return result.Produce();
421     }
422    
423     String LSCPServer::GetAudioOutputDevices() {
424     dmsg(2,("LSCPServer: GetAudioOutputDevices()\n"));
425     LSCPResultSet result;
426     try {
427     String s;
428     std::map<uint, AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
429     std::map<uint, AudioOutputDevice*>::iterator iter = devices.begin();
430     for (; iter != devices.end(); iter++) {
431     if (s != "") s += ",";
432     s += ToString(iter->first);
433     }
434     result.Add(s);
435     }
436     catch (LinuxSamplerException e) {
437     result.Error(e);
438     }
439     return result.Produce();
440     }
441    
442     String LSCPServer::GetAudioOutputDeviceInfo(uint DeviceIndex) {
443     dmsg(2,("LSCPServer: GetAudioOutputDeviceInfo(DeviceIndex=%d)\n",DeviceIndex));
444     LSCPResultSet result;
445     try {
446     std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
447     if (!devices[DeviceIndex]) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceIndex) + ".");
448     AudioOutputDevice* pDevice = devices[DeviceIndex];
449     std::map<String,DeviceCreationParameter*> parameters = pDevice->DeviceParameters();
450     std::map<String,DeviceCreationParameter*>::iterator iter = parameters.begin();
451     for (; iter != parameters.end(); iter++) {
452     result.Add(iter->first, iter->second->Value());
453     }
454     }
455     catch (LinuxSamplerException e) {
456     result.Error(e);
457     }
458     return result.Produce();
459     }
460    
461     String LSCPServer::GetAudioOutputChannelInfo(uint DeviceId, uint ChannelId) {
462     dmsg(2,("LSCPServer: GetAudioOutputChannelInfo(DeviceId=%d,ChannelId)\n",DeviceId,ChannelId));
463     LSCPResultSet result;
464     try {
465     // get audio output device
466     std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
467     if (!devices[DeviceId]) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceId) + ".");
468     AudioOutputDevice* pDevice = devices[DeviceId];
469    
470     // get audio channel
471     AudioChannel* pChannel = pDevice->Channel(ChannelId);
472     if (!pChannel) throw LinuxSamplerException("Audio ouotput device does not have channel " + ToString(ChannelId) + ".");
473    
474     // return the values of all audio channel parameters
475     std::map<String,DeviceRuntimeParameter*> parameters = pChannel->ChannelParameters();
476     std::map<String,DeviceRuntimeParameter*>::iterator iter = parameters.begin();
477     for (; iter != parameters.end(); iter++) {
478     result.Add(iter->first, iter->second->Value());
479     }
480     }
481     catch (LinuxSamplerException e) {
482     result.Error(e);
483     }
484     return result.Produce();
485     }
486    
487     String LSCPServer::GetAudioOutputChannelParameterInfo(uint DeviceId, uint ChannelId, String ParameterName) {
488     dmsg(2,("LSCPServer: GetAudioOutputChannelParameterInfo(DeviceId=%d,ChannelId=%d,ParameterName=%s)\n",DeviceId,ChannelId,ParameterName.c_str()));
489     LSCPResultSet result;
490     try {
491     // get audio output device
492     std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
493     if (!devices[DeviceId]) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceId) + ".");
494     AudioOutputDevice* pDevice = devices[DeviceId];
495    
496     // get audio channel
497     AudioChannel* pChannel = pDevice->Channel(ChannelId);
498     if (!pChannel) throw LinuxSamplerException("Audio output device does not have channel " + ToString(ChannelId) + ".");
499    
500     // get desired audio channel parameter
501     std::map<String,DeviceRuntimeParameter*> parameters = pChannel->ChannelParameters();
502     if (!parameters[ParameterName]) throw LinuxSamplerException("Audio channel does not provide a parameter '" + ParameterName + "'.");
503     DeviceRuntimeParameter* pParameter = parameters[ParameterName];
504    
505     // return all fields of this audio channel parameter
506     result.Add("TYPE", pParameter->Type());
507     result.Add("DESCRIPTION", pParameter->Description());
508     result.Add("FIX", pParameter->Fix());
509     result.Add("MULTIPLICITY", pParameter->Multiplicity());
510     if (pParameter->RangeMin()) result.Add("RANGE_MIN", pParameter->RangeMin());
511     if (pParameter->RangeMax()) result.Add("RANGE_MAX", pParameter->RangeMax());
512     if (pParameter->Possibilities()) result.Add("POSSIBILITIES", pParameter->Possibilities());
513     }
514     catch (LinuxSamplerException e) {
515     result.Error(e);
516     }
517     return result.Produce();
518     }
519    
520     String LSCPServer::SetAudioOutputChannelParameter(uint DeviceId, uint ChannelId, String ParamKey, String ParamVal) {
521     dmsg(2,("LSCPServer: SetAudioOutputChannelParameter(DeviceId=%d,ChannelId=%d,ParamKey=%s,ParamVal=%s)\n",DeviceId,ChannelId,ParamKey.c_str(),ParamVal.c_str()));
522     LSCPResultSet result;
523     try {
524     // get audio output device
525     std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
526     if (!devices[DeviceId]) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceId) + ".");
527     AudioOutputDevice* pDevice = devices[DeviceId];
528    
529     // get audio channel
530     AudioChannel* pChannel = pDevice->Channel(ChannelId);
531     if (!pChannel) throw LinuxSamplerException("Audio output device does not have channel " + ToString(ChannelId) + ".");
532    
533     // get desired audio channel parameter
534     std::map<String,DeviceRuntimeParameter*> parameters = pChannel->ChannelParameters();
535     if (!parameters[ParamKey]) throw LinuxSamplerException("Audio channel does not provide a parameter '" + ParamKey + "'.");
536     DeviceRuntimeParameter* pParameter = parameters[ParamKey];
537    
538     // set new channel parameter value
539     pParameter->SetValue(ParamVal);
540     }
541     catch (LinuxSamplerException e) {
542     result.Error(e);
543     }
544     return result.Produce();
545     }
546    
547     String LSCPServer::SetAudioOutputDeviceParameter(uint DeviceIndex, String ParamKey, String ParamVal) {
548     dmsg(2,("LSCPServer: SetAudioOutputDeviceParameter(DeviceIndex=%d,ParamKey=%s,ParamVal=%s)\n",DeviceIndex,ParamKey.c_str(),ParamVal.c_str()));
549     LSCPResultSet result;
550     try {
551     std::map<uint,AudioOutputDevice*> devices = pSampler->GetAudioOutputDevices();
552     if (!devices[DeviceIndex]) throw LinuxSamplerException("There is no audio output device with index " + ToString(DeviceIndex) + ".");
553     AudioOutputDevice* pDevice = devices[DeviceIndex];
554     std::map<String,DeviceCreationParameter*> parameters = pDevice->DeviceParameters();
555     if (!parameters[ParamKey]) throw LinuxSamplerException("Audio output device " + ToString(DeviceIndex) + " does not have a device parameter '" + ParamKey + "'");
556     parameters[ParamKey]->SetValue(ParamVal);
557     }
558     catch (LinuxSamplerException e) {
559     result.Error(e);
560     }
561     return result.Produce();
562     }
563    
564 schoenebeck 35 /**
565     * Will be called by the parser to change the audio output channel for
566     * playback on a particular sampler channel.
567     */
568 schoenebeck 123 String LSCPServer::SetAudioOutputChannel(uint ChannelAudioOutputChannel, uint AudioOutputDeviceInputChannel, uint uiSamplerChannel) {
569     dmsg(2,("LSCPServer: SetAudioOutputChannel(ChannelAudioOutputChannel=%d, AudioOutputDeviceInputChannel=%d, SamplerChannel=%d)\n",ChannelAudioOutputChannel,AudioOutputDeviceInputChannel,uiSamplerChannel));
570 senkov 120 return "ERR:0:Not implemented yet.\r\n"; //FIXME: Add support for this in resultset class?
571 schoenebeck 35 }
572    
573 schoenebeck 123 String LSCPServer::SetMIDIInputType(String MidiInputDriver, uint uiSamplerChannel) {
574     dmsg(2,("LSCPServer: SetMIDIInputType(String MidiInputDriver=%s, SamplerChannel=%d)\n",MidiInputDriver.c_str(),uiSamplerChannel));
575 senkov 120 LSCPResultSet result;
576 schoenebeck 53 try {
577     SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
578     if (!pSamplerChannel) throw LinuxSamplerException("Index out of bounds");
579 schoenebeck 123 // FIXME: workaround until MIDI driver configuration is implemented (using a Factory class for the MIDI input drivers then, like its already done for audio output drivers)
580     if (MidiInputDriver != "ALSA") throw LinuxSamplerException("Unknown MIDI input driver '" + MidiInputDriver + "'.");
581     MidiInputDevice::type_t MidiInputType = MidiInputDevice::type_alsa;
582 schoenebeck 53 pSamplerChannel->SetMidiInputDevice(MidiInputType);
583     }
584     catch (LinuxSamplerException e) {
585 senkov 120 result.Error(e);
586 schoenebeck 53 }
587 senkov 120 return result.Produce();
588 schoenebeck 53 }
589    
590 schoenebeck 35 /**
591     * Will be called by the parser to change the MIDI input port on which the
592     * engine of a particular sampler channel should listen to.
593     */
594 senkov 68 String LSCPServer::SetMIDIInputPort(String MIDIInputPort, uint uiSamplerChannel) {
595     dmsg(2,("LSCPServer: SetMIDIInputPort(MIDIInputPort=%s, Samplerchannel=%d)\n", MIDIInputPort.c_str(), uiSamplerChannel));
596 senkov 120 LSCPResultSet result;
597 senkov 68 try {
598     SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
599     if (!pSamplerChannel) throw LinuxSamplerException("Index out of bounds");
600     if (!pSamplerChannel->GetMidiInputDevice()) throw LinuxSamplerException("No MIDI input device connected yet");
601     pSamplerChannel->GetMidiInputDevice()->SetInputPort(MIDIInputPort.c_str());
602     }
603     catch (LinuxSamplerException e) {
604 senkov 120 result.Error(e);
605 senkov 68 }
606 senkov 120 return result.Produce();
607 schoenebeck 35 }
608    
609     /**
610     * Will be called by the parser to change the MIDI input channel on which the
611     * engine of a particular sampler channel should listen to.
612     */
613 schoenebeck 53 String LSCPServer::SetMIDIInputChannel(uint MIDIChannel, uint uiSamplerChannel) {
614     dmsg(2,("LSCPServer: SetMIDIInputChannel(MIDIChannel=%d, SamplerChannel=%d)\n", MIDIChannel, uiSamplerChannel));
615 senkov 120 LSCPResultSet result;
616 schoenebeck 64 try {
617     SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
618     if (!pSamplerChannel) throw LinuxSamplerException("Index out of bounds");
619     if (!pSamplerChannel->GetMidiInputDevice()) throw LinuxSamplerException("No MIDI input device connected yet");
620     MidiInputDevice::type_t oldtype = pSamplerChannel->GetMidiInputDevice()->Type();
621 senkov 79 pSamplerChannel->SetMidiInputDevice(oldtype, (MidiInputDevice::midi_chan_t) MIDIChannel);
622 schoenebeck 64 }
623     catch (LinuxSamplerException e) {
624 senkov 120 result.Error(e);
625 schoenebeck 64 }
626 senkov 120 return result.Produce();
627 schoenebeck 35 }
628    
629 schoenebeck 123 String LSCPServer::SetAudioOutputDevice(uint AudioDeviceId, uint SamplerChannel) {
630     LSCPResultSet result;
631     try {
632     throw LinuxSamplerException("Command not yet implemented");
633     }
634     catch (LinuxSamplerException e) {
635     result.Error(e);
636     }
637     return result.Produce();
638     }
639    
640 schoenebeck 35 /**
641     * Will be called by the parser to change the global volume factor on a
642     * particular sampler channel.
643     */
644 schoenebeck 53 String LSCPServer::SetVolume(double Volume, uint uiSamplerChannel) {
645     dmsg(2,("LSCPServer: SetVolume(Volume=%f, SamplerChannel=%d)\n", Volume, uiSamplerChannel));
646 senkov 120 LSCPResultSet result;
647 schoenebeck 53 try {
648     SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
649     if (!pSamplerChannel) throw LinuxSamplerException("Index out of bounds");
650     Engine* pEngine = pSamplerChannel->GetEngine();
651     if (!pEngine) throw LinuxSamplerException("No engine loaded on channel");
652     pEngine->Volume(Volume);
653     }
654     catch (LinuxSamplerException e) {
655 senkov 120 result.Error(e);
656 schoenebeck 53 }
657 senkov 120 return result.Produce();
658 schoenebeck 35 }
659    
660     /**
661     * Will be called by the parser to reset a particular sampler channel.
662     */
663 schoenebeck 53 String LSCPServer::ResetChannel(uint uiSamplerChannel) {
664     dmsg(2,("LSCPServer: ResetChannel(SamplerChannel=%d)\n", uiSamplerChannel));
665 senkov 120 LSCPResultSet result;
666 schoenebeck 53 try {
667     SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel);
668     if (!pSamplerChannel) throw LinuxSamplerException("Index out of bounds");
669     Engine* pEngine = pSamplerChannel->GetEngine();
670     if (!pEngine) throw LinuxSamplerException("No engine loaded on channel");
671     pEngine->Reset();
672     }
673     catch (LinuxSamplerException e) {
674 senkov 120 result.Error(e);
675 schoenebeck 53 }
676 senkov 120 return result.Produce();
677 schoenebeck 35 }
678    
679     /**
680     * Will be called by the parser to subscribe a client (frontend) on the
681     * server for receiving event messages.
682     */
683     String LSCPServer::SubscribeNotification(uint UDPPort) {
684     dmsg(2,("LSCPServer: SubscribeNotification(UDPPort=%d)\n", UDPPort));
685     return "ERR:0:Not implemented yet.\r\n";
686     }
687    
688     /**
689     * Will be called by the parser to unsubscribe a client on the server
690     * for not receiving further event messages.
691     */
692     String LSCPServer::UnsubscribeNotification(String SessionID) {
693     dmsg(2,("LSCPServer: UnsubscribeNotification(SessionID=%s)\n", SessionID.c_str()));
694     return "ERR:0:Not implemented yet.\r\n";
695     }

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