Jack2: JackProxyDriver.cpp Source File

Jack2 1.9.12

JackProxyDriver.cpp
1 /*
2 Copyright (C) 2014 Cédric Schieli
3
4 This program is free software; you can redistribute it and/or
5 modify it under the terms of the GNU General Public License
6 as published by the Free Software Foundation; either version 2
7 of the License, or (at your option) any later version.
8
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
13
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
17
18 */
19
20 #include "JackCompilerDeps.h"
21 #include "driver_interface.h"
22 #include "JackEngineControl.h"
23 #include "JackLockedEngine.h"
24 #include "JackWaitCallbackDriver.h"
25 #include "JackProxyDriver.h"
26
27 using namespace std;
28
29 namespace Jack
30 {
31 JackProxyDriver::JackProxyDriver(const char* name, const char* alias, JackLockedEngine* engine, JackSynchro* table,
32 const char* upstream, const char* promiscuous,
33 char* client_name, bool auto_connect, bool auto_save)
34 : JackRestarterDriver(name, alias, engine, table)
35 {
36 jack_log("JackProxyDriver::JackProxyDriver upstream %s", upstream);
37
38 assert(strlen(upstream) < JACK_CLIENT_NAME_SIZE);
39 strcpy(fUpstream, upstream);
40
41 assert(strlen(client_name) < JACK_CLIENT_NAME_SIZE);
42 strcpy(fClientName, client_name);
43
44 if (promiscuous) {
45 fPromiscuous = strdup(promiscuous);
46 }
47
48 fAutoConnect = auto_connect;
49 fAutoSave = auto_save;
50 }
51
52 JackProxyDriver::~JackProxyDriver()
53 {
54 if (fHandle) {
55 UnloadJackModule(fHandle);
56 }
57 }
58
59 int JackProxyDriver::LoadClientLib()
60 {
61 // Already loaded
62 if (fHandle) {
63 return 0;
64 }
65 fHandle = LoadJackModule(JACK_PROXY_CLIENT_LIB);
66 if (!fHandle) {
67 return -1;
68 }
69 LoadSymbols();
70 return 0;
71 }
72
73 //open, close, attach and detach------------------------------------------------------
74
75 int JackProxyDriver::Open(jack_nframes_t buffer_size,
76 jack_nframes_t samplerate,
77 bool capturing,
78 bool playing,
79 int inchannels,
80 int outchannels,
81 bool monitor,
82 const char* capture_driver_name,
83 const char* playback_driver_name,
84 jack_nframes_t capture_latency,
85 jack_nframes_t playback_latency)
86 {
87 fDetectPlaybackChannels = (outchannels == -1);
88 fDetectCaptureChannels = (inchannels == -1);
89
90 if (LoadClientLib() != 0) {
91 jack_error("Cannot dynamically load client library !");
92 return -1;
93 }
94
95 return JackWaiterDriver::Open(buffer_size, samplerate,
96 capturing, playing,
97 inchannels, outchannels,
98 monitor,
99 capture_driver_name, playback_driver_name,
100 capture_latency, playback_latency);
101 }
102
103 int JackProxyDriver::Close()
104 {
105 FreePorts();
106 return JackWaiterDriver::Close();
107 }
108
109 // Attach and Detach are defined as empty methods: port allocation is done when driver actually start (that is in Init)
110 int JackProxyDriver::Attach()
111 {
112 return 0;
113 }
114
115 int JackProxyDriver::Detach()
116 {
117 return 0;
118 }
119
120 //init and restart--------------------------------------------------------------------
121
122 /*
123 JackProxyDriver is wrapped in a JackWaitCallbackDriver decorator that behaves
124 as a "dummy driver, until Initialize method returns.
125 */
126 bool JackProxyDriver::Initialize()
127 {
128 jack_log("JackProxyDriver::Initialize");
129
130 // save existing local connections if needed
131 if (fAutoSave) {
132 SaveConnections(0);
133 }
134
135 // new loading, but existing client, restart the driver
136 if (fClient) {
137 jack_info("JackProxyDriver restarting...");
138 jack_client_close(fClient);
139 }
140 FreePorts();
141
142 // display some additional infos
143 jack_info("JackProxyDriver started in %s mode.",
144 (fEngineControl->fSyncMode) ? "sync" : "async");
145
146 do {
147 jack_status_t status;
148 char *old = NULL;
149
150 if (fPromiscuous) {
151 // as we are fiddling with the environment variable content, save it
152 const char* tmp = getenv("JACK_PROMISCUOUS_SERVER");
153 if (tmp) {
154 old = strdup(tmp);
155 }
156 // temporary enable promiscuous mode
157 if (setenv("JACK_PROMISCUOUS_SERVER", fPromiscuous, 1) < 0) {
158 free(old);
159 jack_error("Error allocating memory.");
160 return false;
161 }
162 }
163
164 jack_info("JackProxyDriver connecting to %s", fUpstream);
165 fClient = jack_client_open(fClientName, static_cast<jack_options_t>(JackNoStartServer|JackServerName), &status, fUpstream);
166
167 if (fPromiscuous) {
168 // restore previous environment variable content
169 if (old) {
170 if (setenv("JACK_PROMISCUOUS_SERVER", old, 1) < 0) {
171 free(old);
172 jack_error("Error allocating memory.");
173 return false;
174 }
175 free(old);
176 } else {
177 unsetenv("JACK_PROMISCUOUS_SERVER");
178 }
179 }
180
181 // the connection failed, try again later
182 if (!fClient) {
183 JackSleep(1000000);
184 }
185
186 } while (!fClient);
187 jack_info("JackProxyDriver connected to %s", fUpstream);
188
189 // we are connected, let's register some callbacks
190
191 jack_on_shutdown(fClient, shutdown_callback, this);
192
193 if (jack_set_process_callback(fClient, process_callback, this) != 0) {
194 jack_error("Cannot set process callback.");
195 return false;
196 }
197
198 if (jack_set_buffer_size_callback(fClient, bufsize_callback, this) != 0) {
199 jack_error("Cannot set buffer size callback.");
200 return false;
201 }
202
203 if (jack_set_sample_rate_callback(fClient, srate_callback, this) != 0) {
204 jack_error("Cannot set sample rate callback.");
205 return false;
206 }
207
208 if (jack_set_port_connect_callback(fClient, connect_callback, this) != 0) {
209 jack_error("Cannot set port connect callback.");
210 return false;
211 }
212
213 // detect upstream physical playback ports if needed
214 if (fDetectPlaybackChannels) {
215 fPlaybackChannels = CountIO(JACK_DEFAULT_AUDIO_TYPE, JackPortIsPhysical | JackPortIsOutput);
216 }
217
218 // detect upstream physical capture ports if needed
219 if (fDetectCaptureChannels) {
220 fCaptureChannels = CountIO(JACK_DEFAULT_AUDIO_TYPE, JackPortIsPhysical | JackPortIsInput);
221 }
222
223 if (AllocPorts() != 0) {
224 jack_error("Can't allocate ports.");
225 return false;
226 }
227
228 bufsize_callback(jack_get_buffer_size(fClient));
229 srate_callback(jack_get_sample_rate(fClient));
230
231 // restore local connections if needed
232 if (fAutoSave) {
233 LoadConnections(0);
234 }
235
236 // everything is ready, start upstream processing
237 if (jack_activate(fClient) != 0) {
238 jack_error("Cannot activate jack client.");
239 return false;
240 }
241
242 // connect upstream ports if needed
243 if (fAutoConnect) {
244 ConnectPorts();
245 }
246
247 return true;
248 }
249
250 int JackProxyDriver::Stop()
251 {
252 if (fClient && (jack_deactivate(fClient) != 0)) {
253 jack_error("Cannot deactivate jack client.");
254 return -1;
255 }
256 return 0;
257 }
258
259 //client callbacks---------------------------------------------------------------------------
260
261 int JackProxyDriver::process_callback(jack_nframes_t nframes, void* arg)
262 {
263 assert(static_cast<JackProxyDriver*>(arg));
264 return static_cast<JackProxyDriver*>(arg)->Process();
265 }
266
267 int JackProxyDriver::bufsize_callback(jack_nframes_t nframes, void* arg)
268 {
269 assert(static_cast<JackProxyDriver*>(arg));
270 return static_cast<JackProxyDriver*>(arg)->bufsize_callback(nframes);
271 }
272 int JackProxyDriver::bufsize_callback(jack_nframes_t nframes)
273 {
274 if (JackTimedDriver::SetBufferSize(nframes) == 0) {
275 return -1;
276 }
277 JackDriver::NotifyBufferSize(nframes);
278 return 0;
279 }
280
281 int JackProxyDriver::srate_callback(jack_nframes_t nframes, void* arg)
282 {
283 assert(static_cast<JackProxyDriver*>(arg));
284 return static_cast<JackProxyDriver*>(arg)->srate_callback(nframes);
285 }
286 int JackProxyDriver::srate_callback(jack_nframes_t nframes)
287 {
288 if (JackTimedDriver::SetSampleRate(nframes) == 0) {
289 return -1;
290 }
291 JackDriver::NotifySampleRate(nframes);
292 return 0;
293 }
294
295 void JackProxyDriver::connect_callback(jack_port_id_t a, jack_port_id_t b, int connect, void* arg)
296 {
297 assert(static_cast<JackProxyDriver*>(arg));
298 static_cast<JackProxyDriver*>(arg)->connect_callback(a, b, connect);
299 }
300 void JackProxyDriver::connect_callback(jack_port_id_t a, jack_port_id_t b, int connect)
301 {
302 jack_port_t* port;
303 int i;
304
305 // skip port if not our own
306 port = jack_port_by_id(fClient, a);
307 if (!jack_port_is_mine(fClient, port)) {
308 port = jack_port_by_id(fClient, b);
309 if (!jack_port_is_mine(fClient, port)) {
310 return;
311 }
312 }
313
314 for (i = 0; i < fCaptureChannels; i++) {
315 if (fUpstreamPlaybackPorts[i] == port) {
316 fUpstreamPlaybackPortConnected[i] = connect;
317 }
318 }
319
320 for (i = 0; i < fPlaybackChannels; i++) {
321 if (fUpstreamCapturePorts[i] == port) {
322 fUpstreamCapturePortConnected[i] = connect;
323 }
324 }
325 }
326
327 void JackProxyDriver::shutdown_callback(void* arg)
328 {
329 assert(static_cast<JackProxyDriver*>(arg));
330 static_cast<JackProxyDriver*>(arg)->RestartWait();
331 }
332
333 //jack ports and buffers--------------------------------------------------------------
334
335 int JackProxyDriver::CountIO(const char* type, int flags)
336 {
337 int count = 0;
338 const char** ports = jack_get_ports(fClient, NULL, type, flags);
339 if (ports != NULL) {
340 while (ports[count]) { count++; }
341 jack_free(ports);
342 }
343 return count;
344 }
345
346 int JackProxyDriver::AllocPorts()
347 {
348 jack_log("JackProxyDriver::AllocPorts fBufferSize = %ld fSampleRate = %ld", fEngineControl->fBufferSize, fEngineControl->fSampleRate);
349
350 char proxy[REAL_JACK_PORT_NAME_SIZE];
351 int i;
352
353 fUpstreamPlaybackPorts = new jack_port_t* [fCaptureChannels];
354 fUpstreamPlaybackPortConnected = new int [fCaptureChannels];
355 for (i = 0; i < fCaptureChannels; i++) {
356 snprintf(proxy, sizeof(proxy), "%s:to_client_%d", fClientName, i + 1);
357 fUpstreamPlaybackPorts[i] = jack_port_register(fClient, proxy, JACK_DEFAULT_AUDIO_TYPE, JackPortIsInput | JackPortIsTerminal, 0);
358 if (fUpstreamPlaybackPorts[i] == NULL) {
359 jack_error("driver: cannot register upstream port %s", proxy);
360 return -1;
361 }
362 fUpstreamPlaybackPortConnected[i] = 0;
363 }
364
365 fUpstreamCapturePorts = new jack_port_t* [fPlaybackChannels];
366 fUpstreamCapturePortConnected = new int [fPlaybackChannels];
367 for (i = 0; i < fPlaybackChannels; i++) {
368 snprintf(proxy, sizeof(proxy), "%s:from_client_%d", fClientName, i + 1);
369 fUpstreamCapturePorts[i] = jack_port_register(fClient, proxy, JACK_DEFAULT_AUDIO_TYPE, JackPortIsOutput | JackPortIsTerminal, 0);
370 if (fUpstreamCapturePorts[i] == NULL) {
371 jack_error("driver: cannot register upstream port %s", proxy);
372 return -1;
373 }
374 fUpstreamCapturePortConnected[i] = 0;
375 }
376
377 // local ports are registered here
378 return JackAudioDriver::Attach();
379 }
380
381 int JackProxyDriver::FreePorts()
382 {
383 jack_log("JackProxyDriver::FreePorts");
384
385 int i;
386
387 for (i = 0; i < fCaptureChannels; i++) {
388 if (fCapturePortList[i] > 0) {
389 fEngine->PortUnRegister(fClientControl.fRefNum, fCapturePortList[i]);
390 fCapturePortList[i] = 0;
391 }
392 if (fUpstreamPlaybackPorts && fUpstreamPlaybackPorts[i]) {
393 fUpstreamPlaybackPorts[i] = NULL;
394 }
395 }
396
397 for (i = 0; i < fPlaybackChannels; i++) {
398 if (fPlaybackPortList[i] > 0) {
399 fEngine->PortUnRegister(fClientControl.fRefNum, fPlaybackPortList[i]);
400 fPlaybackPortList[i] = 0;
401 }
402 if (fUpstreamCapturePorts && fUpstreamCapturePorts[i]) {
403 fUpstreamCapturePorts[i] = NULL;
404 }
405 }
406
407 delete[] fUpstreamPlaybackPorts;
408 delete[] fUpstreamPlaybackPortConnected;
409 delete[] fUpstreamCapturePorts;
410 delete[] fUpstreamCapturePortConnected;
411
412 fUpstreamPlaybackPorts = NULL;
413 fUpstreamPlaybackPortConnected = NULL;
414 fUpstreamCapturePorts = NULL;
415 fUpstreamCapturePortConnected = NULL;
416
417 return 0;
418 }
419
420 void JackProxyDriver::ConnectPorts()
421 {
422 jack_log("JackProxyDriver::ConnectPorts");
423 const char** ports = jack_get_ports(fClient, NULL, JACK_DEFAULT_AUDIO_TYPE, JackPortIsPhysical | JackPortIsOutput);
424 if (ports != NULL) {
425 for (int i = 0; i < fCaptureChannels && ports[i]; i++) {
426 jack_connect(fClient, ports[i], jack_port_name(fUpstreamPlaybackPorts[i]));
427 }
428 jack_free(ports);
429 }
430
431 ports = jack_get_ports(fClient, NULL, JACK_DEFAULT_AUDIO_TYPE, JackPortIsPhysical | JackPortIsInput);
432 if (ports != NULL) {
433 for (int i = 0; i < fPlaybackChannels && ports[i]; i++) {
434 jack_connect(fClient, jack_port_name(fUpstreamCapturePorts[i]), ports[i]);
435 }
436 jack_free(ports);
437 }
438 }
439
440 //driver processes--------------------------------------------------------------------
441
442 int JackProxyDriver::Read()
443 {
444 // take the time at the beginning of the cycle
445 JackDriver::CycleTakeBeginTime();
446
447 int i;
448 void *from, *to;
449 size_t buflen = sizeof(jack_default_audio_sample_t) * fEngineControl->fBufferSize;
450
451 for (i = 0; i < fCaptureChannels; i++) {
452 if (fUpstreamPlaybackPortConnected[i]) {
453 from = jack_port_get_buffer(fUpstreamPlaybackPorts[i], fEngineControl->fBufferSize);
454 to = GetInputBuffer(i);
455 memcpy(to, from, buflen);
456 }
457 }
458
459 return 0;
460 }
461
462 int JackProxyDriver::Write()
463 {
464 int i;
465 void *from, *to;
466 size_t buflen = sizeof(jack_default_audio_sample_t) * fEngineControl->fBufferSize;
467
468 for (i = 0; i < fPlaybackChannels; i++) {
469 if (fUpstreamCapturePortConnected[i]) {
470 to = jack_port_get_buffer(fUpstreamCapturePorts[i], fEngineControl->fBufferSize);
471 from = GetOutputBuffer(i);
472 memcpy(to, from, buflen);
473 }
474 }
475
476 return 0;
477 }
478
479 //driver loader-----------------------------------------------------------------------
480
481 #ifdef __cplusplus
482 extern "C"
483 {
484 #endif
485
486 SERVER_EXPORT jack_driver_desc_t* driver_get_descriptor()
487 {
488 jack_driver_desc_t * desc;
489 jack_driver_desc_filler_t filler;
490 jack_driver_param_value_t value;
491
492 desc = jack_driver_descriptor_construct("proxy", JackDriverMaster, "proxy backend", &filler);
493
494 strcpy(value.str, DEFAULT_UPSTREAM);
495 jack_driver_descriptor_add_parameter(desc, &filler, "upstream", 'u', JackDriverParamString, &value, NULL, "Name of the upstream jack server", NULL);
496
497 strcpy(value.str, "");
498 jack_driver_descriptor_add_parameter(desc, &filler, "promiscuous", 'p', JackDriverParamString, &value, NULL, "Promiscuous group", NULL);
499
500 value.i = -1;
501 jack_driver_descriptor_add_parameter(desc, &filler, "input-ports", 'C', JackDriverParamInt, &value, NULL, "Number of audio input ports", "Number of audio input ports. If -1, audio physical input from the master");
502 jack_driver_descriptor_add_parameter(desc, &filler, "output-ports", 'P', JackDriverParamInt, &value, NULL, "Number of audio output ports", "Number of audio output ports. If -1, audio physical output from the master");
503
504 strcpy(value.str, "proxy");
505 jack_driver_descriptor_add_parameter(desc, &filler, "client-name", 'n', JackDriverParamString, &value, NULL, "Name of the jack client", NULL);
506
507 value.i = false;
508 jack_driver_descriptor_add_parameter(desc, &filler, "use-username", 'U', JackDriverParamBool, &value, NULL, "Use current username as client name", NULL);
509
510 value.i = false;
511 jack_driver_descriptor_add_parameter(desc, &filler, "auto-connect", 'c', JackDriverParamBool, &value, NULL, "Auto connect proxy to upstream system ports", NULL);
512
513 value.i = false;
514 jack_driver_descriptor_add_parameter(desc, &filler, "auto-save", 's', JackDriverParamBool, &value, NULL, "Save/restore connection state when restarting", NULL);
515
516 return desc;
517 }
518
519 SERVER_EXPORT Jack::JackDriverClientInterface* driver_initialize(Jack::JackLockedEngine* engine, Jack::JackSynchro* table, const JSList* params)
520 {
521 char upstream[JACK_CLIENT_NAME_SIZE + 1];
522 char promiscuous[JACK_CLIENT_NAME_SIZE + 1] = {0};
523 char client_name[JACK_CLIENT_NAME_SIZE + 1];
524 jack_nframes_t period_size = 1024; // to be used while waiting for master period_size
525 jack_nframes_t sample_rate = 48000; // to be used while waiting for master sample_rate
526 int capture_ports = -1;
527 int playback_ports = -1;
528 const JSList* node;
529 const jack_driver_param_t* param;
530 bool auto_connect = false;
531 bool auto_save = false;
532 bool use_promiscuous = false;
533
534 // Possibly use env variable for upstream name
535 const char* default_upstream = getenv("JACK_PROXY_UPSTREAM");
536 strcpy(upstream, (default_upstream) ? default_upstream : DEFAULT_UPSTREAM);
537
538 // Possibly use env variable for upstream promiscuous
539 const char* default_promiscuous = getenv("JACK_PROXY_PROMISCUOUS");
540 strcpy(promiscuous, (default_promiscuous) ? default_promiscuous : "");
541
542 // Possibly use env variable for client name
543 const char* default_client_name = getenv("JACK_PROXY_CLIENT_NAME");
544 strcpy(client_name, (default_client_name) ? default_client_name : DEFAULT_CLIENT_NAME);
545
546 #ifdef WIN32
547 const char* username = getenv("USERNAME");
548 #else
549 const char* username = getenv("LOGNAME");
550 #endif
551
552 for (node = params; node; node = jack_slist_next(node)) {
553 param = (const jack_driver_param_t*) node->data;
554 switch (param->character)
555 {
556 case 'u' :
557 assert(strlen(param->value.str) < JACK_CLIENT_NAME_SIZE);
558 strcpy(upstream, param->value.str);
559 break;
560 case 'p':
561 assert(strlen(param->value.str) < JACK_CLIENT_NAME_SIZE);
562 use_promiscuous = true;
563 strcpy(promiscuous, param->value.str);
564 break;
565 case 'C':
566 capture_ports = param->value.i;
567 break;
568 case 'P':
569 playback_ports = param->value.i;
570 break;
571 case 'n' :
572 assert(strlen(param->value.str) < JACK_CLIENT_NAME_SIZE);
573 strncpy(client_name, param->value.str, JACK_CLIENT_NAME_SIZE);
574 break;
575 case 'U' :
576 if (username && *username) {
577 assert(strlen(username) < JACK_CLIENT_NAME_SIZE);
578 strncpy(client_name, username, JACK_CLIENT_NAME_SIZE);
579 }
580 case 'c':
581 auto_connect = true;
582 break;
583 case 's':
584 auto_save = true;
585 break;
586 }
587 }
588
589 try {
590
591 Jack::JackDriverClientInterface* driver = new Jack::JackWaitCallbackDriver(
592 new Jack::JackProxyDriver("system", "proxy_pcm", engine, table, upstream, use_promiscuous ? promiscuous : NULL, client_name, auto_connect, auto_save));
593 if (driver->Open(period_size, sample_rate, 1, 1, capture_ports, playback_ports, false, "capture_", "playback_", 0, 0) == 0) {
594 return driver;
595 } else {
596 delete driver;
597 return NULL;
598 }
599
600 } catch (...) {
601 return NULL;
602 }
603 }
604
605 #ifdef __cplusplus
606 }
607 #endif
608 }
Jack::JackLockedEngine
Locked Engine, access to methods is serialized using a mutex.
Definition: JackLockedEngine.h:78
jack_port_by_id
LIB_EXPORT jack_port_t * jack_port_by_id(jack_client_t *client, jack_port_id_t port_id)
Definition: JackAPI.cpp:1326
jack_driver_param_value_t
Definition: driver_interface.h:64
Jack::JackPosixSemaphore
Inter process synchronization using POSIX semaphore.
Definition: JackPosixSemaphore.h:36
jack_set_process_callback
LIB_EXPORT int jack_set_process_callback(jack_client_t *client, JackProcessCallback process_callback, void *arg)
Definition: JackAPI.cpp:829
jack_activate
LIB_EXPORT int jack_activate(jack_client_t *client)
Definition: JackAPI.cpp:1067
Jack::JackProxyDriver
Definition: JackProxyDriver.h:60
jack_error
SERVER_EXPORT void jack_error(const char *fmt,...)
Definition: JackError.cpp:92
jack_connect
LIB_EXPORT int jack_connect(jack_client_t *, const char *source_port, const char *destination_port)
Definition: JackAPI.cpp:1211
jack_port_register
LIB_EXPORT jack_port_t * jack_port_register(jack_client_t *client, const char *port_name, const char *port_type, unsigned long flags, unsigned long buffer_size)
Definition: JackAPI.cpp:1093
jack_info
SERVER_EXPORT void jack_info(const char *fmt,...)
Definition: JackError.cpp:100
jack_on_shutdown
LIB_EXPORT void jack_on_shutdown(jack_client_t *client, JackShutdownCallback shutdown_callback, void *arg)
Definition: JackAPI.cpp:805
jack_set_port_connect_callback
LIB_EXPORT int jack_set_port_connect_callback(jack_client_t *, JackPortConnectCallback connect_callback, void *arg)
Definition: JackAPI.cpp:987
jack_client_open
LIB_EXPORT jack_client_t * jack_client_open(const char *client_name, jack_options_t options, jack_status_t *status,...)
Definition: JackLibAPI.cpp:167
Jack::JackWaitCallbackDriver
Wrapper for a restartable non-threaded driver (e.g. JackProxyDriver).
Definition: JackWaitCallbackDriver.h:35
jack_get_buffer_size
LIB_EXPORT jack_nframes_t jack_get_buffer_size(jack_client_t *)
Definition: JackAPI.cpp:1275
jack_set_sample_rate_callback
LIB_EXPORT int jack_set_sample_rate_callback(jack_client_t *client, JackSampleRateCallback srate_callback, void *arg)
Definition: JackAPI.cpp:948
jack_port_get_buffer
LIB_EXPORT void * jack_port_get_buffer(jack_port_t *, jack_nframes_t)
Definition: JackAPI.cpp:363
jack_port_is_mine
LIB_EXPORT int jack_port_is_mine(const jack_client_t *, const jack_port_t *port)
Definition: JackAPI.cpp:1127
jack_get_sample_rate
LIB_EXPORT jack_nframes_t jack_get_sample_rate(jack_client_t *)
Definition: JackAPI.cpp:1261
jack_driver_desc_filler_t
Definition: driver_interface.h:142
jack_set_buffer_size_callback
LIB_EXPORT int jack_set_buffer_size_callback(jack_client_t *client, JackBufferSizeCallback bufsize_callback, void *arg)
Definition: JackAPI.cpp:935
Jack::JackDriverClientInterface
The base interface for drivers clients.
Definition: JackDriver.h:114
jack_port_name
LIB_EXPORT const char * jack_port_name(const jack_port_t *port)
Definition: JackAPI.cpp:383
jack_driver_param_t
Definition: driver_interface.h:125
jack_get_ports
LIB_EXPORT const char ** jack_get_ports(jack_client_t *, const char *port_name_pattern, const char *type_name_pattern, unsigned long flags)
Definition: JackAPI.cpp:1289
jack_deactivate
LIB_EXPORT int jack_deactivate(jack_client_t *client)
Definition: JackAPI.cpp:1080
_JSList
Definition: linux/alsa/jslist.h:35
jack_log
SERVER_EXPORT void jack_log(const char *fmt,...)
Definition: JackError.cpp:108
jack_driver_desc_t
Definition: driver_interface.h:132
jack_client_close
LIB_EXPORT int jack_client_close(jack_client_t *client)
Definition: JackLibAPI.cpp:189