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a1bb33af | 1 | /* |
50985c20 | 2 | * This file is part of the libsigrok project. |
a1bb33af | 3 | * |
c73d2ea4 | 4 | * Copyright (C) 2010-2012 Bert Vermeulen <bert@biot.com> |
a1bb33af UH |
5 | * |
6 | * This program is free software: you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation, either version 3 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
32af282c | 20 | #include <errno.h> |
a1bb33af UH |
21 | #include <stdio.h> |
22 | #include <stdlib.h> | |
23 | #include <unistd.h> | |
24 | #include <string.h> | |
544a4582 | 25 | #include <glib.h> |
c1aae900 | 26 | #include <libsigrok/libsigrok.h> |
45c59c8b | 27 | #include "libsigrok-internal.h" |
aa4b1107 | 28 | |
2ad1deb8 | 29 | /** @cond PRIVATE */ |
3544f848 | 30 | #define LOG_PREFIX "session" |
2ad1deb8 | 31 | /** @endcond */ |
a421dc1d | 32 | |
393fb9cb UH |
33 | /** |
34 | * @file | |
35 | * | |
36 | * Creating, using, or destroying libsigrok sessions. | |
37 | */ | |
38 | ||
7b870c38 UH |
39 | /** |
40 | * @defgroup grp_session Session handling | |
41 | * | |
42 | * Creating, using, or destroying libsigrok sessions. | |
43 | * | |
44 | * @{ | |
45 | */ | |
46 | ||
544a4582 | 47 | struct source { |
544a4582 | 48 | int timeout; |
144f6660 | 49 | sr_receive_data_callback cb; |
1f9813eb | 50 | void *cb_data; |
aac0ea25 LPC |
51 | |
52 | /* This is used to keep track of the object (fd, pollfd or channel) which is | |
53 | * being polled and will be used to match the source when removing it again. | |
54 | */ | |
55 | gintptr poll_object; | |
544a4582 BV |
56 | }; |
57 | ||
2726474a | 58 | struct datafeed_callback { |
144f6660 | 59 | sr_datafeed_callback cb; |
2726474a ML |
60 | void *cb_data; |
61 | }; | |
62 | ||
9f45fb3a UH |
63 | /** |
64 | * Create a new session. | |
7efe889e | 65 | * |
61e6e2da | 66 | * @param ctx The context in which to create the new session. |
7efe889e UH |
67 | * @param new_session This will contain a pointer to the newly created |
68 | * session if the return value is SR_OK, otherwise the value | |
69 | * is undefined and should not be used. Must not be NULL. | |
9f45fb3a | 70 | * |
0812c40e | 71 | * @retval SR_OK Success. |
41de54ff | 72 | * @retval SR_ERR_ARG Invalid argument. |
47117241 | 73 | * |
0812c40e | 74 | * @since 0.4.0 |
9f45fb3a | 75 | */ |
61e6e2da ML |
76 | SR_API int sr_session_new(struct sr_context *ctx, |
77 | struct sr_session **new_session) | |
a1bb33af | 78 | { |
3337e9a1 | 79 | struct sr_session *session; |
a1bb33af | 80 | |
41de54ff UH |
81 | if (!new_session) |
82 | return SR_ERR_ARG; | |
83 | ||
3337e9a1 | 84 | session = g_malloc0(sizeof(struct sr_session)); |
b7e94111 | 85 | |
4ed5d21d | 86 | session->ctx = ctx; |
3337e9a1 BV |
87 | session->source_timeout = -1; |
88 | session->running = FALSE; | |
89 | session->abort_session = FALSE; | |
90 | g_mutex_init(&session->stop_mutex); | |
0812c40e | 91 | |
3337e9a1 | 92 | *new_session = session; |
0812c40e ML |
93 | |
94 | return SR_OK; | |
a1bb33af UH |
95 | } |
96 | ||
9f45fb3a | 97 | /** |
0812c40e | 98 | * Destroy a session. |
9f45fb3a UH |
99 | * This frees up all memory used by the session. |
100 | * | |
7efe889e UH |
101 | * @param session The session to destroy. Must not be NULL. |
102 | * | |
04cb9157 | 103 | * @retval SR_OK Success. |
0812c40e | 104 | * @retval SR_ERR_ARG Invalid session passed. |
47117241 | 105 | * |
0812c40e | 106 | * @since 0.4.0 |
9f45fb3a | 107 | */ |
0812c40e | 108 | SR_API int sr_session_destroy(struct sr_session *session) |
a1bb33af | 109 | { |
9f45fb3a | 110 | if (!session) { |
a421dc1d | 111 | sr_err("%s: session was NULL", __func__); |
0812c40e | 112 | return SR_ERR_ARG; |
9f45fb3a UH |
113 | } |
114 | ||
0812c40e | 115 | sr_session_dev_remove_all(session); |
33c6e4c5 | 116 | g_mutex_clear(&session->stop_mutex); |
3d68b612 BV |
117 | if (session->trigger) |
118 | sr_trigger_free(session->trigger); | |
33c6e4c5 | 119 | |
1de3cced ML |
120 | g_slist_free_full(session->owned_devs, (GDestroyNotify)sr_dev_inst_free); |
121 | ||
a1bb33af | 122 | g_free(session); |
0812c40e | 123 | |
e0508e67 | 124 | return SR_OK; |
a1bb33af UH |
125 | } |
126 | ||
9f45fb3a | 127 | /** |
0812c40e | 128 | * Remove all the devices from a session. |
9f45fb3a UH |
129 | * |
130 | * The session itself (i.e., the struct sr_session) is not free'd and still | |
131 | * exists after this function returns. | |
132 | * | |
7efe889e UH |
133 | * @param session The session to use. Must not be NULL. |
134 | * | |
04cb9157 | 135 | * @retval SR_OK Success. |
0812c40e | 136 | * @retval SR_ERR_BUG Invalid session passed. |
47117241 | 137 | * |
0812c40e | 138 | * @since 0.4.0 |
9f45fb3a | 139 | */ |
0812c40e | 140 | SR_API int sr_session_dev_remove_all(struct sr_session *session) |
a1bb33af | 141 | { |
0812c40e ML |
142 | struct sr_dev_inst *sdi; |
143 | GSList *l; | |
144 | ||
9f45fb3a | 145 | if (!session) { |
a421dc1d | 146 | sr_err("%s: session was NULL", __func__); |
0812c40e ML |
147 | return SR_ERR_ARG; |
148 | } | |
149 | ||
150 | for (l = session->devs; l; l = l->next) { | |
151 | sdi = (struct sr_dev_inst *) l->data; | |
152 | sdi->session = NULL; | |
9f45fb3a UH |
153 | } |
154 | ||
681803df | 155 | g_slist_free(session->devs); |
bb7ef793 | 156 | session->devs = NULL; |
e0508e67 UH |
157 | |
158 | return SR_OK; | |
a1bb33af UH |
159 | } |
160 | ||
9f45fb3a | 161 | /** |
0812c40e | 162 | * Add a device instance to a session. |
9f45fb3a | 163 | * |
7efe889e | 164 | * @param session The session to add to. Must not be NULL. |
0812c40e | 165 | * @param sdi The device instance to add to a session. Must not |
de4d3f99 BV |
166 | * be NULL. Also, sdi->driver and sdi->driver->dev_open must |
167 | * not be NULL. | |
9f45fb3a | 168 | * |
04cb9157 MH |
169 | * @retval SR_OK Success. |
170 | * @retval SR_ERR_ARG Invalid argument. | |
47117241 | 171 | * |
0812c40e | 172 | * @since 0.4.0 |
9f45fb3a | 173 | */ |
0812c40e ML |
174 | SR_API int sr_session_dev_add(struct sr_session *session, |
175 | struct sr_dev_inst *sdi) | |
a1bb33af | 176 | { |
5451816f | 177 | int ret; |
a1bb33af | 178 | |
de4d3f99 | 179 | if (!sdi) { |
a421dc1d | 180 | sr_err("%s: sdi was NULL", __func__); |
9f45fb3a UH |
181 | return SR_ERR_ARG; |
182 | } | |
183 | ||
d6eb0c33 | 184 | if (!session) { |
a421dc1d | 185 | sr_err("%s: session was NULL", __func__); |
0812c40e ML |
186 | return SR_ERR_ARG; |
187 | } | |
188 | ||
189 | /* If sdi->session is not NULL, the device is already in this or | |
190 | * another session. */ | |
191 | if (sdi->session) { | |
192 | sr_err("%s: already assigned to session", __func__); | |
193 | return SR_ERR_ARG; | |
d6eb0c33 UH |
194 | } |
195 | ||
de4d3f99 BV |
196 | /* If sdi->driver is NULL, this is a virtual device. */ |
197 | if (!sdi->driver) { | |
d6eb0c33 | 198 | /* Just add the device, don't run dev_open(). */ |
de4d3f99 | 199 | session->devs = g_slist_append(session->devs, (gpointer)sdi); |
0812c40e | 200 | sdi->session = session; |
d6eb0c33 | 201 | return SR_OK; |
9f45fb3a UH |
202 | } |
203 | ||
de4d3f99 BV |
204 | /* sdi->driver is non-NULL (i.e. we have a real device). */ |
205 | if (!sdi->driver->dev_open) { | |
a421dc1d | 206 | sr_err("%s: sdi->driver->dev_open was NULL", __func__); |
8ec95d22 | 207 | return SR_ERR_BUG; |
9f45fb3a UH |
208 | } |
209 | ||
de4d3f99 | 210 | session->devs = g_slist_append(session->devs, (gpointer)sdi); |
0812c40e | 211 | sdi->session = session; |
aa4b1107 | 212 | |
5451816f | 213 | if (session->running) { |
32b7cd4f DE |
214 | /* Adding a device to a running session. Commit settings |
215 | * and start acquisition on that device now. */ | |
216 | if ((ret = sr_config_commit(sdi)) != SR_OK) { | |
217 | sr_err("Failed to commit device settings before " | |
218 | "starting acquisition in running session (%s)", | |
219 | sr_strerror(ret)); | |
220 | return ret; | |
221 | } | |
5451816f | 222 | if ((ret = sdi->driver->dev_acquisition_start(sdi, |
32b7cd4f | 223 | (void *)sdi)) != SR_OK) { |
5451816f | 224 | sr_err("Failed to start acquisition of device in " |
32b7cd4f DE |
225 | "running session (%s)", sr_strerror(ret)); |
226 | return ret; | |
227 | } | |
5451816f BV |
228 | } |
229 | ||
e46b8fb1 | 230 | return SR_OK; |
a1bb33af UH |
231 | } |
232 | ||
2bb311b4 | 233 | /** |
0812c40e | 234 | * List all device instances attached to a session. |
2bb311b4 | 235 | * |
7efe889e | 236 | * @param session The session to use. Must not be NULL. |
2bb311b4 BV |
237 | * @param devlist A pointer where the device instance list will be |
238 | * stored on return. If no devices are in the session, | |
239 | * this will be NULL. Each element in the list points | |
240 | * to a struct sr_dev_inst *. | |
241 | * The list must be freed by the caller, but not the | |
242 | * elements pointed to. | |
243 | * | |
04cb9157 | 244 | * @retval SR_OK Success. |
0812c40e | 245 | * @retval SR_ERR_ARG Invalid argument. |
47117241 | 246 | * |
0812c40e | 247 | * @since 0.4.0 |
2bb311b4 | 248 | */ |
0812c40e | 249 | SR_API int sr_session_dev_list(struct sr_session *session, GSList **devlist) |
2bb311b4 | 250 | { |
2bb311b4 | 251 | if (!session) |
0812c40e ML |
252 | return SR_ERR_ARG; |
253 | ||
254 | if (!devlist) | |
255 | return SR_ERR_ARG; | |
2bb311b4 BV |
256 | |
257 | *devlist = g_slist_copy(session->devs); | |
258 | ||
259 | return SR_OK; | |
260 | } | |
261 | ||
9f45fb3a | 262 | /** |
0812c40e | 263 | * Remove all datafeed callbacks in a session. |
9f45fb3a | 264 | * |
7efe889e UH |
265 | * @param session The session to use. Must not be NULL. |
266 | * | |
04cb9157 | 267 | * @retval SR_OK Success. |
0812c40e | 268 | * @retval SR_ERR_ARG Invalid session passed. |
47117241 | 269 | * |
0812c40e | 270 | * @since 0.4.0 |
9f45fb3a | 271 | */ |
0812c40e | 272 | SR_API int sr_session_datafeed_callback_remove_all(struct sr_session *session) |
a1bb33af | 273 | { |
9f45fb3a | 274 | if (!session) { |
a421dc1d | 275 | sr_err("%s: session was NULL", __func__); |
0812c40e | 276 | return SR_ERR_ARG; |
9f45fb3a UH |
277 | } |
278 | ||
2726474a | 279 | g_slist_free_full(session->datafeed_callbacks, g_free); |
a1bb33af | 280 | session->datafeed_callbacks = NULL; |
e0508e67 UH |
281 | |
282 | return SR_OK; | |
a1bb33af UH |
283 | } |
284 | ||
9f45fb3a | 285 | /** |
0812c40e | 286 | * Add a datafeed callback to a session. |
9f45fb3a | 287 | * |
7efe889e | 288 | * @param session The session to use. Must not be NULL. |
d08490aa | 289 | * @param cb Function to call when a chunk of data is received. |
0abee507 | 290 | * Must not be NULL. |
85222791 | 291 | * @param cb_data Opaque pointer passed in by the caller. |
a1645fcd | 292 | * |
04cb9157 MH |
293 | * @retval SR_OK Success. |
294 | * @retval SR_ERR_BUG No session exists. | |
47117241 UH |
295 | * |
296 | * @since 0.3.0 | |
9f45fb3a | 297 | */ |
0812c40e ML |
298 | SR_API int sr_session_datafeed_callback_add(struct sr_session *session, |
299 | sr_datafeed_callback cb, void *cb_data) | |
a1bb33af | 300 | { |
2726474a ML |
301 | struct datafeed_callback *cb_struct; |
302 | ||
9f45fb3a | 303 | if (!session) { |
a421dc1d | 304 | sr_err("%s: session was NULL", __func__); |
e0508e67 | 305 | return SR_ERR_BUG; |
9f45fb3a UH |
306 | } |
307 | ||
0abee507 | 308 | if (!cb) { |
a421dc1d | 309 | sr_err("%s: cb was NULL", __func__); |
0abee507 UH |
310 | return SR_ERR_ARG; |
311 | } | |
9f45fb3a | 312 | |
91219afc | 313 | cb_struct = g_malloc0(sizeof(struct datafeed_callback)); |
2726474a ML |
314 | cb_struct->cb = cb; |
315 | cb_struct->cb_data = cb_data; | |
316 | ||
62c82025 | 317 | session->datafeed_callbacks = |
2726474a | 318 | g_slist_append(session->datafeed_callbacks, cb_struct); |
e0508e67 UH |
319 | |
320 | return SR_OK; | |
a1bb33af UH |
321 | } |
322 | ||
9f42e2e6 UH |
323 | /** |
324 | * Get the trigger assigned to this session. | |
325 | * | |
326 | * @param session The session to use. | |
327 | * | |
328 | * @retval NULL Invalid (NULL) session was passed to the function. | |
329 | * @retval other The trigger assigned to this session (can be NULL). | |
330 | * | |
331 | * @since 0.4.0 | |
332 | */ | |
0812c40e | 333 | SR_API struct sr_trigger *sr_session_trigger_get(struct sr_session *session) |
7b5e6d29 | 334 | { |
9f42e2e6 UH |
335 | if (!session) |
336 | return NULL; | |
337 | ||
7b5e6d29 BV |
338 | return session->trigger; |
339 | } | |
340 | ||
9f42e2e6 UH |
341 | /** |
342 | * Set the trigger of this session. | |
343 | * | |
344 | * @param session The session to use. Must not be NULL. | |
345 | * @param trig The trigger to assign to this session. Can be NULL. | |
346 | * | |
347 | * @retval SR_OK Success. | |
348 | * @retval SR_ERR_ARG Invalid argument. | |
349 | * | |
350 | * @since 0.4.0 | |
351 | */ | |
0812c40e | 352 | SR_API int sr_session_trigger_set(struct sr_session *session, struct sr_trigger *trig) |
7b5e6d29 | 353 | { |
9f42e2e6 UH |
354 | if (!session) |
355 | return SR_ERR_ARG; | |
356 | ||
7b5e6d29 BV |
357 | session->trigger = trig; |
358 | ||
359 | return SR_OK; | |
360 | } | |
361 | ||
32af282c DE |
362 | static gboolean sr_session_check_aborted(struct sr_session *session) |
363 | { | |
364 | gboolean stop; | |
365 | ||
366 | g_mutex_lock(&session->stop_mutex); | |
367 | stop = session->abort_session; | |
368 | if (stop) { | |
369 | sr_session_stop_sync(session); | |
370 | /* But once is enough. */ | |
371 | session->abort_session = FALSE; | |
372 | } | |
373 | g_mutex_unlock(&session->stop_mutex); | |
374 | ||
375 | return stop; | |
376 | } | |
377 | ||
b483be74 | 378 | /** |
0812c40e | 379 | * Call every device in the current session's callback. |
b483be74 BV |
380 | * |
381 | * For sessions not driven by select loops such as sr_session_run(), | |
382 | * but driven by another scheduler, this can be used to poll the devices | |
383 | * from within that scheduler. | |
384 | * | |
7efe889e | 385 | * @param session The session to use. Must not be NULL. |
f6eb2cb5 BV |
386 | * @param block If TRUE, this call will wait for any of the session's |
387 | * sources to fire an event on the file descriptors, or | |
388 | * any of their timeouts to activate. In other words, this | |
389 | * can be used as a select loop. | |
32af282c DE |
390 | * If FALSE, return immediately if none of the sources has |
391 | * events pending. | |
04cb9157 | 392 | * @retval SR_OK Success. |
f3f19d11 | 393 | * @retval SR_ERR Error occurred. |
b483be74 | 394 | */ |
3337e9a1 | 395 | static int sr_session_iteration(struct sr_session *session, gboolean block) |
544a4582 | 396 | { |
b7e94111 | 397 | unsigned int i; |
bb5f6110 | 398 | int ret, timeout; |
4399cc0f | 399 | int revents; |
32af282c DE |
400 | gboolean stop_checked; |
401 | gboolean stopped; | |
4399cc0f DE |
402 | struct source *source; |
403 | GPollFD *pollfd; | |
bb5f6110 ML |
404 | #ifdef HAVE_LIBUSB_1_0 |
405 | int usb_timeout; | |
406 | struct timeval tv; | |
407 | #endif | |
408 | ||
1190c653 | 409 | timeout = block ? session->source_timeout : 0; |
bb5f6110 ML |
410 | |
411 | #ifdef HAVE_LIBUSB_1_0 | |
1190c653 | 412 | if (session->ctx->usb_source_present) { |
1190c653 UH |
413 | ret = libusb_get_next_timeout(session->ctx->libusb_ctx, &tv); |
414 | if (ret < 0) { | |
415 | sr_err("Error getting libusb timeout: %s", | |
416 | libusb_error_name(ret)); | |
417 | return SR_ERR; | |
418 | } else if (ret == 1) { | |
419 | usb_timeout = tv.tv_sec * 1000 + tv.tv_usec / 1000; | |
420 | timeout = MIN(timeout, usb_timeout); | |
421 | } | |
bb5f6110 ML |
422 | } |
423 | #endif | |
544a4582 | 424 | |
bb5f6110 | 425 | ret = g_poll(session->pollfds, session->num_sources, timeout); |
4399cc0f | 426 | #ifdef G_OS_UNIX |
32af282c DE |
427 | if (ret < 0 && errno != EINTR) { |
428 | sr_err("Error in poll: %s", g_strerror(errno)); | |
429 | return SR_ERR; | |
430 | } | |
4399cc0f DE |
431 | #else |
432 | if (ret < 0) { | |
433 | sr_err("Error in poll: %d", ret); | |
434 | return SR_ERR; | |
435 | } | |
436 | #endif | |
32af282c DE |
437 | stop_checked = FALSE; |
438 | stopped = FALSE; | |
439 | ||
b483be74 | 440 | for (i = 0; i < session->num_sources; i++) { |
4399cc0f DE |
441 | source = &session->sources[i]; |
442 | pollfd = &session->pollfds[i]; | |
443 | revents = (ret > 0) ? pollfd->revents : 0; | |
444 | ||
445 | if (revents > 0 || (ret == 0 | |
446 | && session->source_timeout == source->timeout)) { | |
33c6e4c5 | 447 | /* |
b483be74 BV |
448 | * Invoke the source's callback on an event, |
449 | * or if the poll timed out and this source | |
450 | * asked for that timeout. | |
33c6e4c5 | 451 | */ |
4399cc0f | 452 | if (!source->cb(pollfd->fd, revents, source->cb_data)) |
0812c40e | 453 | sr_session_source_remove(session, |
4399cc0f | 454 | source->poll_object); |
32af282c DE |
455 | /* |
456 | * We want to take as little time as possible to stop | |
457 | * the session if we have been told to do so. Therefore, | |
458 | * we check the flag after processing every source, not | |
459 | * just once per main event loop. | |
460 | */ | |
461 | if (!stopped) { | |
462 | stopped = sr_session_check_aborted(session); | |
463 | stop_checked = TRUE; | |
464 | } | |
b483be74 | 465 | } |
544a4582 | 466 | } |
32af282c DE |
467 | if (!stop_checked) |
468 | sr_session_check_aborted(session); | |
e0508e67 UH |
469 | |
470 | return SR_OK; | |
544a4582 BV |
471 | } |
472 | ||
7b5e6d29 BV |
473 | static int verify_trigger(struct sr_trigger *trigger) |
474 | { | |
475 | struct sr_trigger_stage *stage; | |
476 | struct sr_trigger_match *match; | |
477 | GSList *l, *m; | |
478 | ||
479 | if (!trigger->stages) { | |
480 | sr_err("No trigger stages defined."); | |
481 | return SR_ERR; | |
482 | } | |
483 | ||
484 | sr_spew("Checking trigger:"); | |
485 | for (l = trigger->stages; l; l = l->next) { | |
486 | stage = l->data; | |
487 | if (!stage->matches) { | |
488 | sr_err("Stage %d has no matches defined.", stage->stage); | |
489 | return SR_ERR; | |
490 | } | |
491 | for (m = stage->matches; m; m = m->next) { | |
492 | match = m->data; | |
493 | if (!match->channel) { | |
494 | sr_err("Stage %d match has no channel.", stage->stage); | |
495 | return SR_ERR; | |
496 | } | |
497 | if (!match->match) { | |
498 | sr_err("Stage %d match is not defined.", stage->stage); | |
499 | return SR_ERR; | |
500 | } | |
501 | sr_spew("Stage %d match on channel %s, match %d", stage->stage, | |
502 | match->channel->name, match->match); | |
503 | } | |
504 | } | |
505 | ||
506 | return SR_OK; | |
507 | } | |
1beccaed | 508 | |
9f45fb3a UH |
509 | /** |
510 | * Start a session. | |
511 | * | |
7efe889e UH |
512 | * @param session The session to use. Must not be NULL. |
513 | * | |
04cb9157 | 514 | * @retval SR_OK Success. |
0812c40e | 515 | * @retval SR_ERR_ARG Invalid session passed. |
47117241 | 516 | * |
0812c40e | 517 | * @since 0.4.0 |
9f45fb3a | 518 | */ |
0812c40e | 519 | SR_API int sr_session_start(struct sr_session *session) |
7d658874 | 520 | { |
de4d3f99 | 521 | struct sr_dev_inst *sdi; |
013ec84b BV |
522 | struct sr_channel *ch; |
523 | GSList *l, *c; | |
524 | int enabled_channels, ret; | |
7d658874 | 525 | |
9f45fb3a | 526 | if (!session) { |
0812c40e ML |
527 | sr_err("%s: session was NULL", __func__); |
528 | return SR_ERR_ARG; | |
9f45fb3a UH |
529 | } |
530 | ||
bb7ef793 | 531 | if (!session->devs) { |
a421dc1d | 532 | sr_err("%s: session->devs was NULL; a session " |
9f45fb3a | 533 | "cannot be started without devices.", __func__); |
0812c40e | 534 | return SR_ERR_ARG; |
9f45fb3a UH |
535 | } |
536 | ||
7b5e6d29 BV |
537 | if (session->trigger && verify_trigger(session->trigger) != SR_OK) |
538 | return SR_ERR; | |
539 | ||
c7142604 | 540 | sr_info("Starting."); |
9f45fb3a | 541 | |
b7c3e849 | 542 | ret = SR_OK; |
bb7ef793 | 543 | for (l = session->devs; l; l = l->next) { |
de4d3f99 | 544 | sdi = l->data; |
013ec84b BV |
545 | enabled_channels = 0; |
546 | for (c = sdi->channels; c; c = c->next) { | |
547 | ch = c->data; | |
548 | if (ch->enabled) { | |
549 | enabled_channels++; | |
550 | break; | |
551 | } | |
552 | } | |
553 | if (enabled_channels == 0) { | |
554 | ret = SR_ERR; | |
1b9e567b SA |
555 | sr_err("%s using connection %s has no enabled channels!", |
556 | sdi->driver->name, sdi->connection_id); | |
013ec84b BV |
557 | break; |
558 | } | |
559 | ||
32b7cd4f DE |
560 | if ((ret = sr_config_commit(sdi)) != SR_OK) { |
561 | sr_err("Failed to commit device settings before " | |
562 | "starting acquisition (%s)", sr_strerror(ret)); | |
563 | break; | |
564 | } | |
de4d3f99 | 565 | if ((ret = sdi->driver->dev_acquisition_start(sdi, sdi)) != SR_OK) { |
a421dc1d | 566 | sr_err("%s: could not start an acquisition " |
568dcacc | 567 | "(%s)", __func__, sr_strerror(ret)); |
7d658874 | 568 | break; |
9f45fb3a | 569 | } |
7d658874 BV |
570 | } |
571 | ||
9f45fb3a UH |
572 | /* TODO: What if there are multiple devices? Which return code? */ |
573 | ||
7d658874 BV |
574 | return ret; |
575 | } | |
576 | ||
9f45fb3a | 577 | /** |
0812c40e | 578 | * Run a session. |
9f45fb3a | 579 | * |
7efe889e UH |
580 | * @param session The session to use. Must not be NULL. |
581 | * | |
04cb9157 | 582 | * @retval SR_OK Success. |
0812c40e | 583 | * @retval SR_ERR_ARG Invalid session passed. |
47117241 | 584 | * |
0812c40e | 585 | * @since 0.4.0 |
9f45fb3a | 586 | */ |
0812c40e | 587 | SR_API int sr_session_run(struct sr_session *session) |
7d658874 | 588 | { |
9f45fb3a | 589 | if (!session) { |
0812c40e ML |
590 | sr_err("%s: session was NULL", __func__); |
591 | return SR_ERR_ARG; | |
9f45fb3a UH |
592 | } |
593 | ||
bb7ef793 | 594 | if (!session->devs) { |
9f45fb3a | 595 | /* TODO: Actually the case? */ |
a421dc1d | 596 | sr_err("%s: session->devs was NULL; a session " |
9f45fb3a | 597 | "cannot be run without devices.", __func__); |
0812c40e | 598 | return SR_ERR_ARG; |
9f45fb3a | 599 | } |
5451816f | 600 | session->running = TRUE; |
9f45fb3a | 601 | |
a421dc1d | 602 | sr_info("Running."); |
7d658874 | 603 | |
9f45fb3a | 604 | /* Do we have real sources? */ |
b7e94111 | 605 | if (session->num_sources == 1 && session->pollfds[0].fd == -1) { |
9f45fb3a | 606 | /* Dummy source, freewheel over it. */ |
2cbeb2b7 | 607 | while (session->num_sources) |
b7e94111 | 608 | session->sources[0].cb(-1, 0, session->sources[0].cb_data); |
9f45fb3a UH |
609 | } else { |
610 | /* Real sources, use g_poll() main loop. */ | |
b483be74 | 611 | while (session->num_sources) |
3337e9a1 | 612 | sr_session_iteration(session, TRUE); |
9f45fb3a UH |
613 | } |
614 | ||
e0508e67 | 615 | return SR_OK; |
7d658874 BV |
616 | } |
617 | ||
9f45fb3a | 618 | /** |
0812c40e | 619 | * Stop a session. |
9f45fb3a | 620 | * |
0812c40e ML |
621 | * The session is stopped immediately, with all acquisition sessions stopped |
622 | * and hardware drivers cleaned up. | |
9f45fb3a | 623 | * |
33c6e4c5 AG |
624 | * This must be called from within the session thread, to prevent freeing |
625 | * resources that the session thread will try to use. | |
626 | * | |
7efe889e UH |
627 | * @param session The session to use. Must not be NULL. |
628 | * | |
04cb9157 | 629 | * @retval SR_OK Success. |
0812c40e | 630 | * @retval SR_ERR_ARG Invalid session passed. |
72a08bcc BV |
631 | * |
632 | * @private | |
9f45fb3a | 633 | */ |
0812c40e | 634 | SR_PRIV int sr_session_stop_sync(struct sr_session *session) |
a1bb33af | 635 | { |
de4d3f99 | 636 | struct sr_dev_inst *sdi; |
a1bb33af UH |
637 | GSList *l; |
638 | ||
9f45fb3a | 639 | if (!session) { |
a421dc1d | 640 | sr_err("%s: session was NULL", __func__); |
0812c40e | 641 | return SR_ERR_ARG; |
9f45fb3a UH |
642 | } |
643 | ||
a421dc1d | 644 | sr_info("Stopping."); |
e0508e67 | 645 | |
bb7ef793 | 646 | for (l = session->devs; l; l = l->next) { |
de4d3f99 BV |
647 | sdi = l->data; |
648 | if (sdi->driver) { | |
649 | if (sdi->driver->dev_acquisition_stop) | |
650 | sdi->driver->dev_acquisition_stop(sdi, sdi); | |
8c76be53 | 651 | } |
a1bb33af | 652 | } |
5451816f | 653 | session->running = FALSE; |
9f45fb3a | 654 | |
e0508e67 | 655 | return SR_OK; |
a1bb33af UH |
656 | } |
657 | ||
33c6e4c5 | 658 | /** |
0812c40e | 659 | * Stop a session. |
33c6e4c5 | 660 | * |
0812c40e ML |
661 | * The session is stopped immediately, with all acquisition sessions being |
662 | * stopped and hardware drivers cleaned up. | |
33c6e4c5 AG |
663 | * |
664 | * If the session is run in a separate thread, this function will not block | |
665 | * until the session is finished executing. It is the caller's responsibility | |
666 | * to wait for the session thread to return before assuming that the session is | |
667 | * completely decommissioned. | |
668 | * | |
7efe889e UH |
669 | * @param session The session to use. Must not be NULL. |
670 | * | |
04cb9157 | 671 | * @retval SR_OK Success. |
0812c40e | 672 | * @retval SR_ERR_ARG Invalid session passed. |
47117241 | 673 | * |
0812c40e | 674 | * @since 0.4.0 |
33c6e4c5 | 675 | */ |
0812c40e | 676 | SR_API int sr_session_stop(struct sr_session *session) |
33c6e4c5 AG |
677 | { |
678 | if (!session) { | |
679 | sr_err("%s: session was NULL", __func__); | |
680 | return SR_ERR_BUG; | |
681 | } | |
682 | ||
683 | g_mutex_lock(&session->stop_mutex); | |
684 | session->abort_session = TRUE; | |
685 | g_mutex_unlock(&session->stop_mutex); | |
686 | ||
687 | return SR_OK; | |
688 | } | |
689 | ||
9f45fb3a | 690 | /** |
a1645fcd | 691 | * Debug helper. |
9f45fb3a | 692 | * |
996b0c72 | 693 | * @param packet The packet to show debugging information for. |
9f45fb3a | 694 | */ |
bf53457d | 695 | static void datafeed_dump(const struct sr_datafeed_packet *packet) |
7d2afd6c | 696 | { |
bf53457d JH |
697 | const struct sr_datafeed_logic *logic; |
698 | const struct sr_datafeed_analog *analog; | |
1954dfa9 | 699 | const struct sr_datafeed_analog2 *analog2; |
7d2afd6c | 700 | |
ca7dbb56 | 701 | /* Please use the same order as in libsigrok.h. */ |
7d2afd6c BV |
702 | switch (packet->type) { |
703 | case SR_DF_HEADER: | |
a421dc1d | 704 | sr_dbg("bus: Received SR_DF_HEADER packet."); |
7d2afd6c | 705 | break; |
55c9f09d UH |
706 | case SR_DF_END: |
707 | sr_dbg("bus: Received SR_DF_END packet."); | |
7d2afd6c | 708 | break; |
c71bac3b | 709 | case SR_DF_META: |
a421dc1d | 710 | sr_dbg("bus: Received SR_DF_META packet."); |
ee7489d2 | 711 | break; |
55c9f09d UH |
712 | case SR_DF_TRIGGER: |
713 | sr_dbg("bus: Received SR_DF_TRIGGER packet."); | |
714 | break; | |
7d2afd6c BV |
715 | case SR_DF_LOGIC: |
716 | logic = packet->payload; | |
7ea45862 UH |
717 | sr_dbg("bus: Received SR_DF_LOGIC packet (%" PRIu64 " bytes, " |
718 | "unitsize = %d).", logic->length, logic->unitsize); | |
7d2afd6c | 719 | break; |
ee7489d2 BV |
720 | case SR_DF_ANALOG: |
721 | analog = packet->payload; | |
a421dc1d UH |
722 | sr_dbg("bus: Received SR_DF_ANALOG packet (%d samples).", |
723 | analog->num_samples); | |
ee7489d2 | 724 | break; |
6ea7669c | 725 | case SR_DF_FRAME_BEGIN: |
a421dc1d | 726 | sr_dbg("bus: Received SR_DF_FRAME_BEGIN packet."); |
6ea7669c BV |
727 | break; |
728 | case SR_DF_FRAME_END: | |
a421dc1d | 729 | sr_dbg("bus: Received SR_DF_FRAME_END packet."); |
6ea7669c | 730 | break; |
55c9f09d UH |
731 | case SR_DF_ANALOG2: |
732 | analog2 = packet->payload; | |
733 | sr_dbg("bus: Received SR_DF_ANALOG2 packet (%d samples).", | |
734 | analog2->num_samples); | |
735 | break; | |
7d2afd6c | 736 | default: |
a421dc1d | 737 | sr_dbg("bus: Received unknown packet type: %d.", packet->type); |
9f45fb3a | 738 | break; |
7d2afd6c | 739 | } |
7d2afd6c BV |
740 | } |
741 | ||
9f45fb3a | 742 | /** |
a1645fcd BV |
743 | * Send a packet to whatever is listening on the datafeed bus. |
744 | * | |
745 | * Hardware drivers use this to send a data packet to the frontend. | |
9f45fb3a | 746 | * |
6b2d8d3e | 747 | * @param sdi TODO. |
31ccebc4 | 748 | * @param packet The datafeed packet to send to the session bus. |
44dae539 | 749 | * |
04cb9157 MH |
750 | * @retval SR_OK Success. |
751 | * @retval SR_ERR_ARG Invalid argument. | |
b4bd7088 UH |
752 | * |
753 | * @private | |
9f45fb3a | 754 | */ |
de4d3f99 | 755 | SR_PRIV int sr_session_send(const struct sr_dev_inst *sdi, |
8143cfdc | 756 | const struct sr_datafeed_packet *packet) |
a1bb33af UH |
757 | { |
758 | GSList *l; | |
2726474a | 759 | struct datafeed_callback *cb_struct; |
c0a1e532 UH |
760 | struct sr_datafeed_packet *packet_in, *packet_out; |
761 | struct sr_transform *t; | |
762 | int ret; | |
a1bb33af | 763 | |
de4d3f99 | 764 | if (!sdi) { |
a421dc1d | 765 | sr_err("%s: sdi was NULL", __func__); |
e0508e67 | 766 | return SR_ERR_ARG; |
9f45fb3a UH |
767 | } |
768 | ||
e0508e67 | 769 | if (!packet) { |
a421dc1d | 770 | sr_err("%s: packet was NULL", __func__); |
e0508e67 | 771 | return SR_ERR_ARG; |
9f45fb3a UH |
772 | } |
773 | ||
79f92686 BV |
774 | if (!sdi->session) { |
775 | sr_err("%s: session was NULL", __func__); | |
776 | return SR_ERR_BUG; | |
777 | } | |
778 | ||
c0a1e532 UH |
779 | /* |
780 | * Pass the packet to the first transform module. If that returns | |
781 | * another packet (instead of NULL), pass that packet to the next | |
782 | * transform module in the list, and so on. | |
783 | */ | |
784 | packet_in = (struct sr_datafeed_packet *)packet; | |
785 | for (l = sdi->session->transforms; l; l = l->next) { | |
786 | t = l->data; | |
787 | sr_spew("Running transform module '%s'.", t->module->id); | |
788 | ret = t->module->receive(t, packet_in, &packet_out); | |
789 | if (ret < 0) { | |
790 | sr_err("Error while running transform module: %d.", ret); | |
791 | return SR_ERR; | |
792 | } | |
793 | if (!packet_out) { | |
794 | /* | |
795 | * If any of the transforms don't return an output | |
796 | * packet, abort. | |
797 | */ | |
798 | sr_spew("Transform module didn't return a packet, aborting."); | |
799 | return SR_OK; | |
800 | } else { | |
801 | /* | |
802 | * Use this transform module's output packet as input | |
803 | * for the next transform module. | |
804 | */ | |
805 | packet_in = packet_out; | |
806 | } | |
807 | } | |
4ec436c4 | 808 | packet = packet_in; |
c0a1e532 UH |
809 | |
810 | /* | |
811 | * If the last transform did output a packet, pass it to all datafeed | |
812 | * callbacks. | |
813 | */ | |
3337e9a1 | 814 | for (l = sdi->session->datafeed_callbacks; l; l = l->next) { |
18beaeff BV |
815 | if (sr_log_loglevel_get() >= SR_LOG_DBG) |
816 | datafeed_dump(packet); | |
2726474a ML |
817 | cb_struct = l->data; |
818 | cb_struct->cb(sdi, packet, cb_struct->cb_data); | |
a1bb33af | 819 | } |
9f45fb3a | 820 | |
e0508e67 | 821 | return SR_OK; |
a1bb33af UH |
822 | } |
823 | ||
6b2d8d3e UH |
824 | /** |
825 | * Add an event source for a file descriptor. | |
826 | * | |
7efe889e | 827 | * @param session The session to use. Must not be NULL. |
6b2d8d3e | 828 | * @param pollfd The GPollFD. |
04cb9157 MH |
829 | * @param[in] timeout Max time to wait before the callback is called, |
830 | * ignored if 0. | |
6b2d8d3e UH |
831 | * @param cb Callback function to add. Must not be NULL. |
832 | * @param cb_data Data for the callback function. Can be NULL. | |
833 | * @param poll_object TODO. | |
834 | * | |
04cb9157 MH |
835 | * @retval SR_OK Success. |
836 | * @retval SR_ERR_ARG Invalid argument. | |
6b2d8d3e | 837 | */ |
102f1239 BV |
838 | static int _sr_session_source_add(struct sr_session *session, GPollFD *pollfd, |
839 | int timeout, sr_receive_data_callback cb, void *cb_data, gintptr poll_object) | |
544a4582 BV |
840 | { |
841 | struct source *new_sources, *s; | |
aac0ea25 | 842 | GPollFD *new_pollfds; |
544a4582 | 843 | |
d08490aa | 844 | if (!cb) { |
a421dc1d | 845 | sr_err("%s: cb was NULL", __func__); |
e0508e67 | 846 | return SR_ERR_ARG; |
9f45fb3a UH |
847 | } |
848 | ||
1f9813eb | 849 | /* Note: cb_data can be NULL, that's not a bug. */ |
9f45fb3a | 850 | |
91219afc | 851 | new_pollfds = g_realloc(session->pollfds, |
2ac2e629 | 852 | sizeof(GPollFD) * (session->num_sources + 1)); |
91219afc | 853 | new_sources = g_realloc(session->sources, sizeof(struct source) * |
2ac2e629 | 854 | (session->num_sources + 1)); |
544a4582 | 855 | |
b7e94111 LPC |
856 | new_pollfds[session->num_sources] = *pollfd; |
857 | s = &new_sources[session->num_sources++]; | |
544a4582 | 858 | s->timeout = timeout; |
d08490aa | 859 | s->cb = cb; |
1f9813eb | 860 | s->cb_data = cb_data; |
aac0ea25 | 861 | s->poll_object = poll_object; |
b7e94111 LPC |
862 | session->pollfds = new_pollfds; |
863 | session->sources = new_sources; | |
544a4582 | 864 | |
b7e94111 LPC |
865 | if (timeout != session->source_timeout && timeout > 0 |
866 | && (session->source_timeout == -1 || timeout < session->source_timeout)) | |
867 | session->source_timeout = timeout; | |
9f45fb3a | 868 | |
e0508e67 | 869 | return SR_OK; |
544a4582 BV |
870 | } |
871 | ||
9f45fb3a | 872 | /** |
6b2d8d3e | 873 | * Add an event source for a file descriptor. |
9f45fb3a | 874 | * |
7efe889e | 875 | * @param session The session to use. Must not be NULL. |
aac0ea25 LPC |
876 | * @param fd The file descriptor. |
877 | * @param events Events to check for. | |
878 | * @param timeout Max time to wait before the callback is called, ignored if 0. | |
879 | * @param cb Callback function to add. Must not be NULL. | |
880 | * @param cb_data Data for the callback function. Can be NULL. | |
9f45fb3a | 881 | * |
04cb9157 MH |
882 | * @retval SR_OK Success. |
883 | * @retval SR_ERR_ARG Invalid argument. | |
47117241 UH |
884 | * |
885 | * @since 0.3.0 | |
aac0ea25 | 886 | */ |
0812c40e ML |
887 | SR_API int sr_session_source_add(struct sr_session *session, int fd, |
888 | int events, int timeout, sr_receive_data_callback cb, void *cb_data) | |
aac0ea25 LPC |
889 | { |
890 | GPollFD p; | |
891 | ||
aac0ea25 LPC |
892 | p.fd = fd; |
893 | p.events = events; | |
89efe064 | 894 | p.revents = 0; |
aac0ea25 | 895 | |
102f1239 | 896 | return _sr_session_source_add(session, &p, timeout, cb, cb_data, (gintptr)fd); |
aac0ea25 LPC |
897 | } |
898 | ||
899 | /** | |
1a895c61 | 900 | * Add an event source for a GPollFD. |
aac0ea25 | 901 | * |
7efe889e | 902 | * @param session The session to use. Must not be NULL. |
aac0ea25 LPC |
903 | * @param pollfd The GPollFD. |
904 | * @param timeout Max time to wait before the callback is called, ignored if 0. | |
905 | * @param cb Callback function to add. Must not be NULL. | |
906 | * @param cb_data Data for the callback function. Can be NULL. | |
44dae539 | 907 | * |
04cb9157 MH |
908 | * @retval SR_OK Success. |
909 | * @retval SR_ERR_ARG Invalid argument. | |
47117241 UH |
910 | * |
911 | * @since 0.3.0 | |
9f45fb3a | 912 | */ |
0812c40e ML |
913 | SR_API int sr_session_source_add_pollfd(struct sr_session *session, |
914 | GPollFD *pollfd, int timeout, sr_receive_data_callback cb, | |
915 | void *cb_data) | |
aac0ea25 | 916 | { |
102f1239 | 917 | return _sr_session_source_add(session, pollfd, timeout, cb, |
8143cfdc | 918 | cb_data, (gintptr)pollfd); |
aac0ea25 LPC |
919 | } |
920 | ||
921 | /** | |
1a895c61 | 922 | * Add an event source for a GIOChannel. |
aac0ea25 | 923 | * |
7efe889e | 924 | * @param session The session to use. Must not be NULL. |
aac0ea25 LPC |
925 | * @param channel The GIOChannel. |
926 | * @param events Events to poll on. | |
927 | * @param timeout Max time to wait before the callback is called, ignored if 0. | |
928 | * @param cb Callback function to add. Must not be NULL. | |
929 | * @param cb_data Data for the callback function. Can be NULL. | |
930 | * | |
04cb9157 MH |
931 | * @retval SR_OK Success. |
932 | * @retval SR_ERR_ARG Invalid argument. | |
47117241 UH |
933 | * |
934 | * @since 0.3.0 | |
aac0ea25 | 935 | */ |
0812c40e ML |
936 | SR_API int sr_session_source_add_channel(struct sr_session *session, |
937 | GIOChannel *channel, int events, int timeout, | |
938 | sr_receive_data_callback cb, void *cb_data) | |
aac0ea25 LPC |
939 | { |
940 | GPollFD p; | |
941 | ||
942 | #ifdef _WIN32 | |
6b2d8d3e | 943 | g_io_channel_win32_make_pollfd(channel, events, &p); |
aac0ea25 LPC |
944 | #else |
945 | p.fd = g_io_channel_unix_get_fd(channel); | |
946 | p.events = events; | |
89efe064 | 947 | p.revents = 0; |
aac0ea25 LPC |
948 | #endif |
949 | ||
102f1239 | 950 | return _sr_session_source_add(session, &p, timeout, cb, cb_data, (gintptr)channel); |
aac0ea25 LPC |
951 | } |
952 | ||
6b2d8d3e UH |
953 | /** |
954 | * Remove the source belonging to the specified channel. | |
955 | * | |
7efe889e | 956 | * @param session The session to use. Must not be NULL. |
04cb9157 | 957 | * @param poll_object The channel for which the source should be removed. |
6b2d8d3e | 958 | * |
04cb9157 MH |
959 | * @retval SR_OK Success |
960 | * @retval SR_ERR_ARG Invalid arguments | |
04cb9157 | 961 | * @retval SR_ERR_BUG Internal error |
6b2d8d3e | 962 | */ |
102f1239 | 963 | static int _sr_session_source_remove(struct sr_session *session, gintptr poll_object) |
544a4582 | 964 | { |
b7e94111 | 965 | unsigned int old; |
544a4582 | 966 | |
b7e94111 | 967 | if (!session->sources || !session->num_sources) { |
a421dc1d | 968 | sr_err("%s: sources was NULL", __func__); |
0abee507 | 969 | return SR_ERR_BUG; |
e0508e67 UH |
970 | } |
971 | ||
b7e94111 LPC |
972 | for (old = 0; old < session->num_sources; old++) { |
973 | if (session->sources[old].poll_object == poll_object) | |
2bccd322 | 974 | break; |
9f45fb3a UH |
975 | } |
976 | ||
2bccd322 | 977 | /* fd not found, nothing to do */ |
b7e94111 | 978 | if (old == session->num_sources) |
2bccd322 LPC |
979 | return SR_OK; |
980 | ||
91219afc | 981 | session->num_sources--; |
2bccd322 | 982 | |
b7e94111 | 983 | if (old != session->num_sources) { |
91219afc | 984 | memmove(&session->pollfds[old], &session->pollfds[old + 1], |
b7e94111 | 985 | (session->num_sources - old) * sizeof(GPollFD)); |
91219afc | 986 | memmove(&session->sources[old], &session->sources[old + 1], |
b7e94111 | 987 | (session->num_sources - old) * sizeof(struct source)); |
9f45fb3a | 988 | } |
544a4582 | 989 | |
91219afc UH |
990 | session->pollfds = g_realloc(session->pollfds, sizeof(GPollFD) * session->num_sources); |
991 | session->sources = g_realloc(session->sources, sizeof(struct source) * session->num_sources); | |
2bccd322 | 992 | |
e0508e67 | 993 | return SR_OK; |
544a4582 | 994 | } |
aac0ea25 | 995 | |
6b2d8d3e | 996 | /** |
aac0ea25 LPC |
997 | * Remove the source belonging to the specified file descriptor. |
998 | * | |
7efe889e | 999 | * @param session The session to use. Must not be NULL. |
1a895c61 | 1000 | * @param fd The file descriptor for which the source should be removed. |
aac0ea25 | 1001 | * |
04cb9157 MH |
1002 | * @retval SR_OK Success |
1003 | * @retval SR_ERR_ARG Invalid argument | |
04cb9157 | 1004 | * @retval SR_ERR_BUG Internal error. |
47117241 UH |
1005 | * |
1006 | * @since 0.3.0 | |
aac0ea25 | 1007 | */ |
0812c40e | 1008 | SR_API int sr_session_source_remove(struct sr_session *session, int fd) |
aac0ea25 | 1009 | { |
102f1239 | 1010 | return _sr_session_source_remove(session, (gintptr)fd); |
aac0ea25 LPC |
1011 | } |
1012 | ||
1013 | /** | |
1014 | * Remove the source belonging to the specified poll descriptor. | |
1015 | * | |
7efe889e | 1016 | * @param session The session to use. Must not be NULL. |
aac0ea25 LPC |
1017 | * @param pollfd The poll descriptor for which the source should be removed. |
1018 | * | |
1019 | * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments, or | |
1020 | * SR_ERR_MALLOC upon memory allocation errors, SR_ERR_BUG upon | |
1021 | * internal errors. | |
47117241 UH |
1022 | * |
1023 | * @since 0.2.0 | |
aac0ea25 | 1024 | */ |
0812c40e ML |
1025 | SR_API int sr_session_source_remove_pollfd(struct sr_session *session, |
1026 | GPollFD *pollfd) | |
aac0ea25 | 1027 | { |
102f1239 | 1028 | return _sr_session_source_remove(session, (gintptr)pollfd); |
aac0ea25 LPC |
1029 | } |
1030 | ||
6b2d8d3e | 1031 | /** |
aac0ea25 LPC |
1032 | * Remove the source belonging to the specified channel. |
1033 | * | |
7efe889e | 1034 | * @param session The session to use. Must not be NULL. |
1a895c61 | 1035 | * @param channel The channel for which the source should be removed. |
aac0ea25 | 1036 | * |
04cb9157 MH |
1037 | * @retval SR_OK Success. |
1038 | * @retval SR_ERR_ARG Invalid argument. | |
04cb9157 | 1039 | * @return SR_ERR_BUG Internal error. |
47117241 UH |
1040 | * |
1041 | * @since 0.2.0 | |
aac0ea25 | 1042 | */ |
0812c40e ML |
1043 | SR_API int sr_session_source_remove_channel(struct sr_session *session, |
1044 | GIOChannel *channel) | |
aac0ea25 | 1045 | { |
102f1239 | 1046 | return _sr_session_source_remove(session, (gintptr)channel); |
aac0ea25 | 1047 | } |
7b870c38 | 1048 | |
ee29d92e | 1049 | static void copy_src(struct sr_config *src, struct sr_datafeed_meta *meta_copy) |
8143cfdc | 1050 | { |
8143cfdc | 1051 | g_variant_ref(src->data); |
ee29d92e AJ |
1052 | meta_copy->config = g_slist_append(meta_copy->config, |
1053 | g_memdup(src, sizeof(struct sr_config))); | |
8143cfdc BV |
1054 | } |
1055 | ||
1056 | SR_PRIV int sr_packet_copy(const struct sr_datafeed_packet *packet, | |
1057 | struct sr_datafeed_packet **copy) | |
1058 | { | |
1059 | const struct sr_datafeed_meta *meta; | |
1060 | struct sr_datafeed_meta *meta_copy; | |
1061 | const struct sr_datafeed_logic *logic; | |
1062 | struct sr_datafeed_logic *logic_copy; | |
1063 | const struct sr_datafeed_analog *analog; | |
1064 | struct sr_datafeed_analog *analog_copy; | |
1065 | uint8_t *payload; | |
1066 | ||
1067 | *copy = g_malloc0(sizeof(struct sr_datafeed_packet)); | |
1068 | (*copy)->type = packet->type; | |
1069 | ||
1070 | switch (packet->type) { | |
1071 | case SR_DF_TRIGGER: | |
1072 | case SR_DF_END: | |
1073 | /* No payload. */ | |
1074 | break; | |
1075 | case SR_DF_HEADER: | |
1076 | payload = g_malloc(sizeof(struct sr_datafeed_header)); | |
1077 | memcpy(payload, packet->payload, sizeof(struct sr_datafeed_header)); | |
1078 | (*copy)->payload = payload; | |
1079 | break; | |
1080 | case SR_DF_META: | |
1081 | meta = packet->payload; | |
ee29d92e AJ |
1082 | meta_copy = g_malloc0(sizeof(struct sr_datafeed_meta)); |
1083 | g_slist_foreach(meta->config, (GFunc)copy_src, meta_copy->config); | |
8143cfdc BV |
1084 | (*copy)->payload = meta_copy; |
1085 | break; | |
1086 | case SR_DF_LOGIC: | |
1087 | logic = packet->payload; | |
1088 | logic_copy = g_malloc(sizeof(logic)); | |
1089 | logic_copy->length = logic->length; | |
1090 | logic_copy->unitsize = logic->unitsize; | |
1091 | memcpy(logic_copy->data, logic->data, logic->length * logic->unitsize); | |
1092 | (*copy)->payload = logic_copy; | |
1093 | break; | |
1094 | case SR_DF_ANALOG: | |
1095 | analog = packet->payload; | |
1096 | analog_copy = g_malloc(sizeof(analog)); | |
1097 | analog_copy->channels = g_slist_copy(analog->channels); | |
1098 | analog_copy->num_samples = analog->num_samples; | |
1099 | analog_copy->mq = analog->mq; | |
1100 | analog_copy->unit = analog->unit; | |
1101 | analog_copy->mqflags = analog->mqflags; | |
1102 | memcpy(analog_copy->data, analog->data, | |
1103 | analog->num_samples * sizeof(float)); | |
1104 | (*copy)->payload = analog_copy; | |
1105 | break; | |
1106 | default: | |
1107 | sr_err("Unknown packet type %d", packet->type); | |
1108 | return SR_ERR; | |
1109 | } | |
1110 | ||
1111 | return SR_OK; | |
1112 | } | |
1113 | ||
1114 | void sr_packet_free(struct sr_datafeed_packet *packet) | |
1115 | { | |
1116 | const struct sr_datafeed_meta *meta; | |
1117 | const struct sr_datafeed_logic *logic; | |
1118 | const struct sr_datafeed_analog *analog; | |
1119 | struct sr_config *src; | |
1120 | GSList *l; | |
1121 | ||
1122 | switch (packet->type) { | |
1123 | case SR_DF_TRIGGER: | |
1124 | case SR_DF_END: | |
1125 | /* No payload. */ | |
1126 | break; | |
1127 | case SR_DF_HEADER: | |
1128 | /* Payload is a simple struct. */ | |
1129 | g_free((void *)packet->payload); | |
1130 | break; | |
1131 | case SR_DF_META: | |
1132 | meta = packet->payload; | |
1133 | for (l = meta->config; l; l = l->next) { | |
1134 | src = l->data; | |
1135 | g_variant_unref(src->data); | |
1136 | g_free(src); | |
1137 | } | |
1138 | g_slist_free(meta->config); | |
1139 | g_free((void *)packet->payload); | |
1140 | break; | |
1141 | case SR_DF_LOGIC: | |
1142 | logic = packet->payload; | |
1143 | g_free(logic->data); | |
1144 | g_free((void *)packet->payload); | |
1145 | break; | |
1146 | case SR_DF_ANALOG: | |
1147 | analog = packet->payload; | |
1148 | g_slist_free(analog->channels); | |
1149 | g_free(analog->data); | |
1150 | g_free((void *)packet->payload); | |
1151 | break; | |
1152 | default: | |
1153 | sr_err("Unknown packet type %d", packet->type); | |
1154 | } | |
1155 | g_free(packet); | |
1156 | ||
1157 | } | |
1158 | ||
7b870c38 | 1159 | /** @} */ |