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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 { |
62d7945f | 48 | int64_t due; |
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; | |
62d7945f DE |
56 | |
57 | int timeout; | |
58 | gboolean is_usb; | |
544a4582 BV |
59 | }; |
60 | ||
2726474a | 61 | struct datafeed_callback { |
144f6660 | 62 | sr_datafeed_callback cb; |
2726474a ML |
63 | void *cb_data; |
64 | }; | |
65 | ||
9f45fb3a UH |
66 | /** |
67 | * Create a new session. | |
7efe889e | 68 | * |
61e6e2da | 69 | * @param ctx The context in which to create the new session. |
7efe889e UH |
70 | * @param new_session This will contain a pointer to the newly created |
71 | * session if the return value is SR_OK, otherwise the value | |
72 | * is undefined and should not be used. Must not be NULL. | |
9f45fb3a | 73 | * |
0812c40e | 74 | * @retval SR_OK Success. |
41de54ff | 75 | * @retval SR_ERR_ARG Invalid argument. |
47117241 | 76 | * |
0812c40e | 77 | * @since 0.4.0 |
9f45fb3a | 78 | */ |
61e6e2da ML |
79 | SR_API int sr_session_new(struct sr_context *ctx, |
80 | struct sr_session **new_session) | |
a1bb33af | 81 | { |
3337e9a1 | 82 | struct sr_session *session; |
a1bb33af | 83 | |
41de54ff UH |
84 | if (!new_session) |
85 | return SR_ERR_ARG; | |
86 | ||
3337e9a1 | 87 | session = g_malloc0(sizeof(struct sr_session)); |
b7e94111 | 88 | |
4ed5d21d | 89 | session->ctx = ctx; |
3337e9a1 BV |
90 | session->running = FALSE; |
91 | session->abort_session = FALSE; | |
92 | g_mutex_init(&session->stop_mutex); | |
0812c40e | 93 | |
3337e9a1 | 94 | *new_session = session; |
0812c40e ML |
95 | |
96 | return SR_OK; | |
a1bb33af UH |
97 | } |
98 | ||
9f45fb3a | 99 | /** |
0812c40e | 100 | * Destroy a session. |
9f45fb3a UH |
101 | * This frees up all memory used by the session. |
102 | * | |
7efe889e UH |
103 | * @param session The session to destroy. Must not be NULL. |
104 | * | |
04cb9157 | 105 | * @retval SR_OK Success. |
0812c40e | 106 | * @retval SR_ERR_ARG Invalid session passed. |
47117241 | 107 | * |
0812c40e | 108 | * @since 0.4.0 |
9f45fb3a | 109 | */ |
0812c40e | 110 | SR_API int sr_session_destroy(struct sr_session *session) |
a1bb33af | 111 | { |
9f45fb3a | 112 | if (!session) { |
a421dc1d | 113 | sr_err("%s: session was NULL", __func__); |
0812c40e | 114 | return SR_ERR_ARG; |
9f45fb3a UH |
115 | } |
116 | ||
0812c40e | 117 | sr_session_dev_remove_all(session); |
33c6e4c5 | 118 | g_mutex_clear(&session->stop_mutex); |
3d68b612 BV |
119 | if (session->trigger) |
120 | sr_trigger_free(session->trigger); | |
33c6e4c5 | 121 | |
1de3cced ML |
122 | g_slist_free_full(session->owned_devs, (GDestroyNotify)sr_dev_inst_free); |
123 | ||
a1bb33af | 124 | g_free(session); |
0812c40e | 125 | |
e0508e67 | 126 | return SR_OK; |
a1bb33af UH |
127 | } |
128 | ||
9f45fb3a | 129 | /** |
0812c40e | 130 | * Remove all the devices from a session. |
9f45fb3a UH |
131 | * |
132 | * The session itself (i.e., the struct sr_session) is not free'd and still | |
133 | * exists after this function returns. | |
134 | * | |
7efe889e UH |
135 | * @param session The session to use. Must not be NULL. |
136 | * | |
04cb9157 | 137 | * @retval SR_OK Success. |
0812c40e | 138 | * @retval SR_ERR_BUG Invalid session passed. |
47117241 | 139 | * |
0812c40e | 140 | * @since 0.4.0 |
9f45fb3a | 141 | */ |
0812c40e | 142 | SR_API int sr_session_dev_remove_all(struct sr_session *session) |
a1bb33af | 143 | { |
0812c40e ML |
144 | struct sr_dev_inst *sdi; |
145 | GSList *l; | |
146 | ||
9f45fb3a | 147 | if (!session) { |
a421dc1d | 148 | sr_err("%s: session was NULL", __func__); |
0812c40e ML |
149 | return SR_ERR_ARG; |
150 | } | |
151 | ||
152 | for (l = session->devs; l; l = l->next) { | |
153 | sdi = (struct sr_dev_inst *) l->data; | |
154 | sdi->session = NULL; | |
9f45fb3a UH |
155 | } |
156 | ||
681803df | 157 | g_slist_free(session->devs); |
bb7ef793 | 158 | session->devs = NULL; |
e0508e67 UH |
159 | |
160 | return SR_OK; | |
a1bb33af UH |
161 | } |
162 | ||
9f45fb3a | 163 | /** |
0812c40e | 164 | * Add a device instance to a session. |
9f45fb3a | 165 | * |
7efe889e | 166 | * @param session The session to add to. Must not be NULL. |
0812c40e | 167 | * @param sdi The device instance to add to a session. Must not |
de4d3f99 BV |
168 | * be NULL. Also, sdi->driver and sdi->driver->dev_open must |
169 | * not be NULL. | |
9f45fb3a | 170 | * |
04cb9157 MH |
171 | * @retval SR_OK Success. |
172 | * @retval SR_ERR_ARG Invalid argument. | |
47117241 | 173 | * |
0812c40e | 174 | * @since 0.4.0 |
9f45fb3a | 175 | */ |
0812c40e ML |
176 | SR_API int sr_session_dev_add(struct sr_session *session, |
177 | struct sr_dev_inst *sdi) | |
a1bb33af | 178 | { |
5451816f | 179 | int ret; |
a1bb33af | 180 | |
de4d3f99 | 181 | if (!sdi) { |
a421dc1d | 182 | sr_err("%s: sdi was NULL", __func__); |
9f45fb3a UH |
183 | return SR_ERR_ARG; |
184 | } | |
185 | ||
d6eb0c33 | 186 | if (!session) { |
a421dc1d | 187 | sr_err("%s: session was NULL", __func__); |
0812c40e ML |
188 | return SR_ERR_ARG; |
189 | } | |
190 | ||
191 | /* If sdi->session is not NULL, the device is already in this or | |
192 | * another session. */ | |
193 | if (sdi->session) { | |
194 | sr_err("%s: already assigned to session", __func__); | |
195 | return SR_ERR_ARG; | |
d6eb0c33 UH |
196 | } |
197 | ||
de4d3f99 BV |
198 | /* If sdi->driver is NULL, this is a virtual device. */ |
199 | if (!sdi->driver) { | |
d6eb0c33 | 200 | /* Just add the device, don't run dev_open(). */ |
de4d3f99 | 201 | session->devs = g_slist_append(session->devs, (gpointer)sdi); |
0812c40e | 202 | sdi->session = session; |
d6eb0c33 | 203 | return SR_OK; |
9f45fb3a UH |
204 | } |
205 | ||
de4d3f99 BV |
206 | /* sdi->driver is non-NULL (i.e. we have a real device). */ |
207 | if (!sdi->driver->dev_open) { | |
a421dc1d | 208 | sr_err("%s: sdi->driver->dev_open was NULL", __func__); |
8ec95d22 | 209 | return SR_ERR_BUG; |
9f45fb3a UH |
210 | } |
211 | ||
de4d3f99 | 212 | session->devs = g_slist_append(session->devs, (gpointer)sdi); |
0812c40e | 213 | sdi->session = session; |
aa4b1107 | 214 | |
5451816f | 215 | if (session->running) { |
32b7cd4f DE |
216 | /* Adding a device to a running session. Commit settings |
217 | * and start acquisition on that device now. */ | |
218 | if ((ret = sr_config_commit(sdi)) != SR_OK) { | |
219 | sr_err("Failed to commit device settings before " | |
220 | "starting acquisition in running session (%s)", | |
221 | sr_strerror(ret)); | |
222 | return ret; | |
223 | } | |
5451816f | 224 | if ((ret = sdi->driver->dev_acquisition_start(sdi, |
32b7cd4f | 225 | (void *)sdi)) != SR_OK) { |
5451816f | 226 | sr_err("Failed to start acquisition of device in " |
32b7cd4f DE |
227 | "running session (%s)", sr_strerror(ret)); |
228 | return ret; | |
229 | } | |
5451816f BV |
230 | } |
231 | ||
e46b8fb1 | 232 | return SR_OK; |
a1bb33af UH |
233 | } |
234 | ||
2bb311b4 | 235 | /** |
0812c40e | 236 | * List all device instances attached to a session. |
2bb311b4 | 237 | * |
7efe889e | 238 | * @param session The session to use. Must not be NULL. |
2bb311b4 BV |
239 | * @param devlist A pointer where the device instance list will be |
240 | * stored on return. If no devices are in the session, | |
241 | * this will be NULL. Each element in the list points | |
242 | * to a struct sr_dev_inst *. | |
243 | * The list must be freed by the caller, but not the | |
244 | * elements pointed to. | |
245 | * | |
04cb9157 | 246 | * @retval SR_OK Success. |
0812c40e | 247 | * @retval SR_ERR_ARG Invalid argument. |
47117241 | 248 | * |
0812c40e | 249 | * @since 0.4.0 |
2bb311b4 | 250 | */ |
0812c40e | 251 | SR_API int sr_session_dev_list(struct sr_session *session, GSList **devlist) |
2bb311b4 | 252 | { |
2bb311b4 | 253 | if (!session) |
0812c40e ML |
254 | return SR_ERR_ARG; |
255 | ||
256 | if (!devlist) | |
257 | return SR_ERR_ARG; | |
2bb311b4 BV |
258 | |
259 | *devlist = g_slist_copy(session->devs); | |
260 | ||
261 | return SR_OK; | |
262 | } | |
263 | ||
9f45fb3a | 264 | /** |
0812c40e | 265 | * Remove all datafeed callbacks in a session. |
9f45fb3a | 266 | * |
7efe889e UH |
267 | * @param session The session to use. Must not be NULL. |
268 | * | |
04cb9157 | 269 | * @retval SR_OK Success. |
0812c40e | 270 | * @retval SR_ERR_ARG Invalid session passed. |
47117241 | 271 | * |
0812c40e | 272 | * @since 0.4.0 |
9f45fb3a | 273 | */ |
0812c40e | 274 | SR_API int sr_session_datafeed_callback_remove_all(struct sr_session *session) |
a1bb33af | 275 | { |
9f45fb3a | 276 | if (!session) { |
a421dc1d | 277 | sr_err("%s: session was NULL", __func__); |
0812c40e | 278 | return SR_ERR_ARG; |
9f45fb3a UH |
279 | } |
280 | ||
2726474a | 281 | g_slist_free_full(session->datafeed_callbacks, g_free); |
a1bb33af | 282 | session->datafeed_callbacks = NULL; |
e0508e67 UH |
283 | |
284 | return SR_OK; | |
a1bb33af UH |
285 | } |
286 | ||
9f45fb3a | 287 | /** |
0812c40e | 288 | * Add a datafeed callback to a session. |
9f45fb3a | 289 | * |
7efe889e | 290 | * @param session The session to use. Must not be NULL. |
d08490aa | 291 | * @param cb Function to call when a chunk of data is received. |
0abee507 | 292 | * Must not be NULL. |
85222791 | 293 | * @param cb_data Opaque pointer passed in by the caller. |
a1645fcd | 294 | * |
04cb9157 MH |
295 | * @retval SR_OK Success. |
296 | * @retval SR_ERR_BUG No session exists. | |
47117241 UH |
297 | * |
298 | * @since 0.3.0 | |
9f45fb3a | 299 | */ |
0812c40e ML |
300 | SR_API int sr_session_datafeed_callback_add(struct sr_session *session, |
301 | sr_datafeed_callback cb, void *cb_data) | |
a1bb33af | 302 | { |
2726474a ML |
303 | struct datafeed_callback *cb_struct; |
304 | ||
9f45fb3a | 305 | if (!session) { |
a421dc1d | 306 | sr_err("%s: session was NULL", __func__); |
e0508e67 | 307 | return SR_ERR_BUG; |
9f45fb3a UH |
308 | } |
309 | ||
0abee507 | 310 | if (!cb) { |
a421dc1d | 311 | sr_err("%s: cb was NULL", __func__); |
0abee507 UH |
312 | return SR_ERR_ARG; |
313 | } | |
9f45fb3a | 314 | |
91219afc | 315 | cb_struct = g_malloc0(sizeof(struct datafeed_callback)); |
2726474a ML |
316 | cb_struct->cb = cb; |
317 | cb_struct->cb_data = cb_data; | |
318 | ||
62c82025 | 319 | session->datafeed_callbacks = |
2726474a | 320 | g_slist_append(session->datafeed_callbacks, cb_struct); |
e0508e67 UH |
321 | |
322 | return SR_OK; | |
a1bb33af UH |
323 | } |
324 | ||
9f42e2e6 UH |
325 | /** |
326 | * Get the trigger assigned to this session. | |
327 | * | |
328 | * @param session The session to use. | |
329 | * | |
330 | * @retval NULL Invalid (NULL) session was passed to the function. | |
331 | * @retval other The trigger assigned to this session (can be NULL). | |
332 | * | |
333 | * @since 0.4.0 | |
334 | */ | |
0812c40e | 335 | SR_API struct sr_trigger *sr_session_trigger_get(struct sr_session *session) |
7b5e6d29 | 336 | { |
9f42e2e6 UH |
337 | if (!session) |
338 | return NULL; | |
339 | ||
7b5e6d29 BV |
340 | return session->trigger; |
341 | } | |
342 | ||
9f42e2e6 UH |
343 | /** |
344 | * Set the trigger of this session. | |
345 | * | |
346 | * @param session The session to use. Must not be NULL. | |
347 | * @param trig The trigger to assign to this session. Can be NULL. | |
348 | * | |
349 | * @retval SR_OK Success. | |
350 | * @retval SR_ERR_ARG Invalid argument. | |
351 | * | |
352 | * @since 0.4.0 | |
353 | */ | |
0812c40e | 354 | SR_API int sr_session_trigger_set(struct sr_session *session, struct sr_trigger *trig) |
7b5e6d29 | 355 | { |
9f42e2e6 UH |
356 | if (!session) |
357 | return SR_ERR_ARG; | |
358 | ||
7b5e6d29 BV |
359 | session->trigger = trig; |
360 | ||
361 | return SR_OK; | |
362 | } | |
363 | ||
32af282c DE |
364 | static gboolean sr_session_check_aborted(struct sr_session *session) |
365 | { | |
366 | gboolean stop; | |
367 | ||
368 | g_mutex_lock(&session->stop_mutex); | |
369 | stop = session->abort_session; | |
370 | if (stop) { | |
371 | sr_session_stop_sync(session); | |
372 | /* But once is enough. */ | |
373 | session->abort_session = FALSE; | |
374 | } | |
375 | g_mutex_unlock(&session->stop_mutex); | |
376 | ||
377 | return stop; | |
378 | } | |
379 | ||
b483be74 | 380 | /** |
0812c40e | 381 | * Call every device in the current session's callback. |
b483be74 BV |
382 | * |
383 | * For sessions not driven by select loops such as sr_session_run(), | |
384 | * but driven by another scheduler, this can be used to poll the devices | |
385 | * from within that scheduler. | |
386 | * | |
7efe889e | 387 | * @param session The session to use. Must not be NULL. |
04cb9157 | 388 | * @retval SR_OK Success. |
f3f19d11 | 389 | * @retval SR_ERR Error occurred. |
b483be74 | 390 | */ |
62d7945f | 391 | static int sr_session_iteration(struct sr_session *session) |
544a4582 | 392 | { |
62d7945f DE |
393 | int64_t start_time; |
394 | int64_t stop_time; | |
395 | int64_t min_due; | |
396 | int64_t due; | |
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; | |
62d7945f | 404 | gintptr poll_object; |
bb5f6110 | 405 | #ifdef HAVE_LIBUSB_1_0 |
62d7945f | 406 | int64_t usb_due; |
bb5f6110 ML |
407 | struct timeval tv; |
408 | #endif | |
62d7945f DE |
409 | if (session->num_sources <= 0) { |
410 | sr_session_check_aborted(session); | |
411 | return SR_OK; | |
412 | } | |
413 | start_time = g_get_monotonic_time(); | |
414 | min_due = INT64_MAX; | |
bb5f6110 | 415 | |
62d7945f DE |
416 | for (i = 0; i < session->num_sources; ++i) { |
417 | if (session->sources[i].due < min_due) | |
418 | min_due = session->sources[i].due; | |
419 | } | |
bb5f6110 | 420 | #ifdef HAVE_LIBUSB_1_0 |
62d7945f | 421 | usb_due = INT64_MAX; |
1190c653 | 422 | if (session->ctx->usb_source_present) { |
1190c653 UH |
423 | ret = libusb_get_next_timeout(session->ctx->libusb_ctx, &tv); |
424 | if (ret < 0) { | |
425 | sr_err("Error getting libusb timeout: %s", | |
426 | libusb_error_name(ret)); | |
427 | return SR_ERR; | |
428 | } else if (ret == 1) { | |
62d7945f DE |
429 | usb_due = start_time + tv.tv_usec |
430 | + (int64_t)tv.tv_sec * G_USEC_PER_SEC; | |
431 | if (usb_due < min_due) | |
432 | min_due = usb_due; | |
1190c653 | 433 | } |
bb5f6110 ML |
434 | } |
435 | #endif | |
62d7945f DE |
436 | if (min_due > start_time) |
437 | timeout = (min_due == INT64_MAX) ? -1 | |
438 | : MIN((min_due - start_time + 999) / 1000, INT_MAX); | |
439 | else | |
440 | timeout = 0; | |
544a4582 | 441 | |
bb5f6110 | 442 | ret = g_poll(session->pollfds, session->num_sources, timeout); |
4399cc0f | 443 | #ifdef G_OS_UNIX |
32af282c DE |
444 | if (ret < 0 && errno != EINTR) { |
445 | sr_err("Error in poll: %s", g_strerror(errno)); | |
446 | return SR_ERR; | |
447 | } | |
4399cc0f DE |
448 | #else |
449 | if (ret < 0) { | |
450 | sr_err("Error in poll: %d", ret); | |
451 | return SR_ERR; | |
452 | } | |
453 | #endif | |
62d7945f | 454 | stop_time = g_get_monotonic_time(); |
32af282c DE |
455 | stop_checked = FALSE; |
456 | stopped = FALSE; | |
457 | ||
b483be74 | 458 | for (i = 0; i < session->num_sources; i++) { |
4399cc0f DE |
459 | source = &session->sources[i]; |
460 | pollfd = &session->pollfds[i]; | |
461 | revents = (ret > 0) ? pollfd->revents : 0; | |
62d7945f DE |
462 | due = source->due; |
463 | #ifdef HAVE_LIBUSB_1_0 | |
464 | if (source->is_usb && usb_due < due) | |
465 | due = usb_due; | |
466 | #endif | |
467 | if (revents == 0 && stop_time < due) | |
468 | continue; | |
469 | /* | |
470 | * The source may be gone after the callback returns, | |
471 | * so access any data now that needs accessing. | |
472 | */ | |
473 | poll_object = source->poll_object; | |
474 | if (source->timeout > 0) | |
475 | source->due = stop_time + INT64_C(1000) * source->timeout; | |
476 | pollfd->revents = 0; | |
477 | /* | |
478 | * Invoke the source's callback on an event or timeout. | |
479 | */ | |
480 | if (!source->cb(pollfd->fd, revents, source->cb_data)) | |
481 | sr_session_source_remove(session, poll_object); | |
482 | /* | |
483 | * We want to take as little time as possible to stop | |
484 | * the session if we have been told to do so. Therefore, | |
485 | * we check the flag after processing every source, not | |
486 | * just once per main event loop. | |
487 | */ | |
488 | if (!stopped) { | |
489 | stopped = sr_session_check_aborted(session); | |
490 | stop_checked = TRUE; | |
b483be74 | 491 | } |
62d7945f DE |
492 | /* Restart loop as the sources list may have changed. */ |
493 | i = 0; | |
544a4582 | 494 | } |
32af282c DE |
495 | if (!stop_checked) |
496 | sr_session_check_aborted(session); | |
e0508e67 UH |
497 | |
498 | return SR_OK; | |
544a4582 BV |
499 | } |
500 | ||
7b5e6d29 BV |
501 | static int verify_trigger(struct sr_trigger *trigger) |
502 | { | |
503 | struct sr_trigger_stage *stage; | |
504 | struct sr_trigger_match *match; | |
505 | GSList *l, *m; | |
506 | ||
507 | if (!trigger->stages) { | |
508 | sr_err("No trigger stages defined."); | |
509 | return SR_ERR; | |
510 | } | |
511 | ||
512 | sr_spew("Checking trigger:"); | |
513 | for (l = trigger->stages; l; l = l->next) { | |
514 | stage = l->data; | |
515 | if (!stage->matches) { | |
516 | sr_err("Stage %d has no matches defined.", stage->stage); | |
517 | return SR_ERR; | |
518 | } | |
519 | for (m = stage->matches; m; m = m->next) { | |
520 | match = m->data; | |
521 | if (!match->channel) { | |
522 | sr_err("Stage %d match has no channel.", stage->stage); | |
523 | return SR_ERR; | |
524 | } | |
525 | if (!match->match) { | |
526 | sr_err("Stage %d match is not defined.", stage->stage); | |
527 | return SR_ERR; | |
528 | } | |
529 | sr_spew("Stage %d match on channel %s, match %d", stage->stage, | |
530 | match->channel->name, match->match); | |
531 | } | |
532 | } | |
533 | ||
534 | return SR_OK; | |
535 | } | |
1beccaed | 536 | |
9f45fb3a UH |
537 | /** |
538 | * Start a session. | |
539 | * | |
7efe889e UH |
540 | * @param session The session to use. Must not be NULL. |
541 | * | |
04cb9157 | 542 | * @retval SR_OK Success. |
0812c40e | 543 | * @retval SR_ERR_ARG Invalid session passed. |
47117241 | 544 | * |
0812c40e | 545 | * @since 0.4.0 |
9f45fb3a | 546 | */ |
0812c40e | 547 | SR_API int sr_session_start(struct sr_session *session) |
7d658874 | 548 | { |
de4d3f99 | 549 | struct sr_dev_inst *sdi; |
013ec84b BV |
550 | struct sr_channel *ch; |
551 | GSList *l, *c; | |
552 | int enabled_channels, ret; | |
7d658874 | 553 | |
9f45fb3a | 554 | if (!session) { |
0812c40e ML |
555 | sr_err("%s: session was NULL", __func__); |
556 | return SR_ERR_ARG; | |
9f45fb3a UH |
557 | } |
558 | ||
bb7ef793 | 559 | if (!session->devs) { |
a421dc1d | 560 | sr_err("%s: session->devs was NULL; a session " |
9f45fb3a | 561 | "cannot be started without devices.", __func__); |
0812c40e | 562 | return SR_ERR_ARG; |
9f45fb3a UH |
563 | } |
564 | ||
7b5e6d29 BV |
565 | if (session->trigger && verify_trigger(session->trigger) != SR_OK) |
566 | return SR_ERR; | |
567 | ||
c7142604 | 568 | sr_info("Starting."); |
9f45fb3a | 569 | |
b7c3e849 | 570 | ret = SR_OK; |
bb7ef793 | 571 | for (l = session->devs; l; l = l->next) { |
de4d3f99 | 572 | sdi = l->data; |
013ec84b BV |
573 | enabled_channels = 0; |
574 | for (c = sdi->channels; c; c = c->next) { | |
575 | ch = c->data; | |
576 | if (ch->enabled) { | |
577 | enabled_channels++; | |
578 | break; | |
579 | } | |
580 | } | |
581 | if (enabled_channels == 0) { | |
582 | ret = SR_ERR; | |
1b9e567b SA |
583 | sr_err("%s using connection %s has no enabled channels!", |
584 | sdi->driver->name, sdi->connection_id); | |
013ec84b BV |
585 | break; |
586 | } | |
587 | ||
32b7cd4f DE |
588 | if ((ret = sr_config_commit(sdi)) != SR_OK) { |
589 | sr_err("Failed to commit device settings before " | |
590 | "starting acquisition (%s)", sr_strerror(ret)); | |
591 | break; | |
592 | } | |
de4d3f99 | 593 | if ((ret = sdi->driver->dev_acquisition_start(sdi, sdi)) != SR_OK) { |
a421dc1d | 594 | sr_err("%s: could not start an acquisition " |
568dcacc | 595 | "(%s)", __func__, sr_strerror(ret)); |
7d658874 | 596 | break; |
9f45fb3a | 597 | } |
7d658874 BV |
598 | } |
599 | ||
9f45fb3a UH |
600 | /* TODO: What if there are multiple devices? Which return code? */ |
601 | ||
7d658874 BV |
602 | return ret; |
603 | } | |
604 | ||
9f45fb3a | 605 | /** |
0812c40e | 606 | * Run a session. |
9f45fb3a | 607 | * |
7efe889e UH |
608 | * @param session The session to use. Must not be NULL. |
609 | * | |
04cb9157 | 610 | * @retval SR_OK Success. |
0812c40e | 611 | * @retval SR_ERR_ARG Invalid session passed. |
47117241 | 612 | * |
0812c40e | 613 | * @since 0.4.0 |
9f45fb3a | 614 | */ |
0812c40e | 615 | SR_API int sr_session_run(struct sr_session *session) |
7d658874 | 616 | { |
9f45fb3a | 617 | if (!session) { |
0812c40e ML |
618 | sr_err("%s: session was NULL", __func__); |
619 | return SR_ERR_ARG; | |
9f45fb3a UH |
620 | } |
621 | ||
bb7ef793 | 622 | if (!session->devs) { |
9f45fb3a | 623 | /* TODO: Actually the case? */ |
a421dc1d | 624 | sr_err("%s: session->devs was NULL; a session " |
9f45fb3a | 625 | "cannot be run without devices.", __func__); |
0812c40e | 626 | return SR_ERR_ARG; |
9f45fb3a | 627 | } |
5451816f | 628 | session->running = TRUE; |
9f45fb3a | 629 | |
a421dc1d | 630 | sr_info("Running."); |
7d658874 | 631 | |
9f45fb3a | 632 | /* Do we have real sources? */ |
b7e94111 | 633 | if (session->num_sources == 1 && session->pollfds[0].fd == -1) { |
9f45fb3a | 634 | /* Dummy source, freewheel over it. */ |
2cbeb2b7 | 635 | while (session->num_sources) |
b7e94111 | 636 | session->sources[0].cb(-1, 0, session->sources[0].cb_data); |
9f45fb3a UH |
637 | } else { |
638 | /* Real sources, use g_poll() main loop. */ | |
b483be74 | 639 | while (session->num_sources) |
62d7945f | 640 | sr_session_iteration(session); |
9f45fb3a UH |
641 | } |
642 | ||
e0508e67 | 643 | return SR_OK; |
7d658874 BV |
644 | } |
645 | ||
9f45fb3a | 646 | /** |
0812c40e | 647 | * Stop a session. |
9f45fb3a | 648 | * |
0812c40e ML |
649 | * The session is stopped immediately, with all acquisition sessions stopped |
650 | * and hardware drivers cleaned up. | |
9f45fb3a | 651 | * |
33c6e4c5 AG |
652 | * This must be called from within the session thread, to prevent freeing |
653 | * resources that the session thread will try to use. | |
654 | * | |
7efe889e UH |
655 | * @param session The session to use. Must not be NULL. |
656 | * | |
04cb9157 | 657 | * @retval SR_OK Success. |
0812c40e | 658 | * @retval SR_ERR_ARG Invalid session passed. |
72a08bcc BV |
659 | * |
660 | * @private | |
9f45fb3a | 661 | */ |
0812c40e | 662 | SR_PRIV int sr_session_stop_sync(struct sr_session *session) |
a1bb33af | 663 | { |
de4d3f99 | 664 | struct sr_dev_inst *sdi; |
a1bb33af UH |
665 | GSList *l; |
666 | ||
9f45fb3a | 667 | if (!session) { |
a421dc1d | 668 | sr_err("%s: session was NULL", __func__); |
0812c40e | 669 | return SR_ERR_ARG; |
9f45fb3a UH |
670 | } |
671 | ||
a421dc1d | 672 | sr_info("Stopping."); |
e0508e67 | 673 | |
bb7ef793 | 674 | for (l = session->devs; l; l = l->next) { |
de4d3f99 BV |
675 | sdi = l->data; |
676 | if (sdi->driver) { | |
677 | if (sdi->driver->dev_acquisition_stop) | |
678 | sdi->driver->dev_acquisition_stop(sdi, sdi); | |
8c76be53 | 679 | } |
a1bb33af | 680 | } |
5451816f | 681 | session->running = FALSE; |
9f45fb3a | 682 | |
e0508e67 | 683 | return SR_OK; |
a1bb33af UH |
684 | } |
685 | ||
33c6e4c5 | 686 | /** |
0812c40e | 687 | * Stop a session. |
33c6e4c5 | 688 | * |
0812c40e ML |
689 | * The session is stopped immediately, with all acquisition sessions being |
690 | * stopped and hardware drivers cleaned up. | |
33c6e4c5 AG |
691 | * |
692 | * If the session is run in a separate thread, this function will not block | |
693 | * until the session is finished executing. It is the caller's responsibility | |
694 | * to wait for the session thread to return before assuming that the session is | |
695 | * completely decommissioned. | |
696 | * | |
7efe889e UH |
697 | * @param session The session to use. Must not be NULL. |
698 | * | |
04cb9157 | 699 | * @retval SR_OK Success. |
0812c40e | 700 | * @retval SR_ERR_ARG Invalid session passed. |
47117241 | 701 | * |
0812c40e | 702 | * @since 0.4.0 |
33c6e4c5 | 703 | */ |
0812c40e | 704 | SR_API int sr_session_stop(struct sr_session *session) |
33c6e4c5 AG |
705 | { |
706 | if (!session) { | |
707 | sr_err("%s: session was NULL", __func__); | |
708 | return SR_ERR_BUG; | |
709 | } | |
710 | ||
711 | g_mutex_lock(&session->stop_mutex); | |
712 | session->abort_session = TRUE; | |
713 | g_mutex_unlock(&session->stop_mutex); | |
714 | ||
715 | return SR_OK; | |
716 | } | |
717 | ||
9f45fb3a | 718 | /** |
a1645fcd | 719 | * Debug helper. |
9f45fb3a | 720 | * |
996b0c72 | 721 | * @param packet The packet to show debugging information for. |
9f45fb3a | 722 | */ |
bf53457d | 723 | static void datafeed_dump(const struct sr_datafeed_packet *packet) |
7d2afd6c | 724 | { |
bf53457d JH |
725 | const struct sr_datafeed_logic *logic; |
726 | const struct sr_datafeed_analog *analog; | |
1954dfa9 | 727 | const struct sr_datafeed_analog2 *analog2; |
7d2afd6c | 728 | |
ca7dbb56 | 729 | /* Please use the same order as in libsigrok.h. */ |
7d2afd6c BV |
730 | switch (packet->type) { |
731 | case SR_DF_HEADER: | |
a421dc1d | 732 | sr_dbg("bus: Received SR_DF_HEADER packet."); |
7d2afd6c | 733 | break; |
55c9f09d UH |
734 | case SR_DF_END: |
735 | sr_dbg("bus: Received SR_DF_END packet."); | |
7d2afd6c | 736 | break; |
c71bac3b | 737 | case SR_DF_META: |
a421dc1d | 738 | sr_dbg("bus: Received SR_DF_META packet."); |
ee7489d2 | 739 | break; |
55c9f09d UH |
740 | case SR_DF_TRIGGER: |
741 | sr_dbg("bus: Received SR_DF_TRIGGER packet."); | |
742 | break; | |
7d2afd6c BV |
743 | case SR_DF_LOGIC: |
744 | logic = packet->payload; | |
7ea45862 UH |
745 | sr_dbg("bus: Received SR_DF_LOGIC packet (%" PRIu64 " bytes, " |
746 | "unitsize = %d).", logic->length, logic->unitsize); | |
7d2afd6c | 747 | break; |
ee7489d2 BV |
748 | case SR_DF_ANALOG: |
749 | analog = packet->payload; | |
a421dc1d UH |
750 | sr_dbg("bus: Received SR_DF_ANALOG packet (%d samples).", |
751 | analog->num_samples); | |
ee7489d2 | 752 | break; |
6ea7669c | 753 | case SR_DF_FRAME_BEGIN: |
a421dc1d | 754 | sr_dbg("bus: Received SR_DF_FRAME_BEGIN packet."); |
6ea7669c BV |
755 | break; |
756 | case SR_DF_FRAME_END: | |
a421dc1d | 757 | sr_dbg("bus: Received SR_DF_FRAME_END packet."); |
6ea7669c | 758 | break; |
55c9f09d UH |
759 | case SR_DF_ANALOG2: |
760 | analog2 = packet->payload; | |
761 | sr_dbg("bus: Received SR_DF_ANALOG2 packet (%d samples).", | |
762 | analog2->num_samples); | |
763 | break; | |
7d2afd6c | 764 | default: |
a421dc1d | 765 | sr_dbg("bus: Received unknown packet type: %d.", packet->type); |
9f45fb3a | 766 | break; |
7d2afd6c | 767 | } |
7d2afd6c BV |
768 | } |
769 | ||
9f45fb3a | 770 | /** |
a1645fcd BV |
771 | * Send a packet to whatever is listening on the datafeed bus. |
772 | * | |
773 | * Hardware drivers use this to send a data packet to the frontend. | |
9f45fb3a | 774 | * |
6b2d8d3e | 775 | * @param sdi TODO. |
31ccebc4 | 776 | * @param packet The datafeed packet to send to the session bus. |
44dae539 | 777 | * |
04cb9157 MH |
778 | * @retval SR_OK Success. |
779 | * @retval SR_ERR_ARG Invalid argument. | |
b4bd7088 UH |
780 | * |
781 | * @private | |
9f45fb3a | 782 | */ |
de4d3f99 | 783 | SR_PRIV int sr_session_send(const struct sr_dev_inst *sdi, |
8143cfdc | 784 | const struct sr_datafeed_packet *packet) |
a1bb33af UH |
785 | { |
786 | GSList *l; | |
2726474a | 787 | struct datafeed_callback *cb_struct; |
c0a1e532 UH |
788 | struct sr_datafeed_packet *packet_in, *packet_out; |
789 | struct sr_transform *t; | |
790 | int ret; | |
a1bb33af | 791 | |
de4d3f99 | 792 | if (!sdi) { |
a421dc1d | 793 | sr_err("%s: sdi was NULL", __func__); |
e0508e67 | 794 | return SR_ERR_ARG; |
9f45fb3a UH |
795 | } |
796 | ||
e0508e67 | 797 | if (!packet) { |
a421dc1d | 798 | sr_err("%s: packet was NULL", __func__); |
e0508e67 | 799 | return SR_ERR_ARG; |
9f45fb3a UH |
800 | } |
801 | ||
79f92686 BV |
802 | if (!sdi->session) { |
803 | sr_err("%s: session was NULL", __func__); | |
804 | return SR_ERR_BUG; | |
805 | } | |
806 | ||
c0a1e532 UH |
807 | /* |
808 | * Pass the packet to the first transform module. If that returns | |
809 | * another packet (instead of NULL), pass that packet to the next | |
810 | * transform module in the list, and so on. | |
811 | */ | |
812 | packet_in = (struct sr_datafeed_packet *)packet; | |
813 | for (l = sdi->session->transforms; l; l = l->next) { | |
814 | t = l->data; | |
815 | sr_spew("Running transform module '%s'.", t->module->id); | |
816 | ret = t->module->receive(t, packet_in, &packet_out); | |
817 | if (ret < 0) { | |
818 | sr_err("Error while running transform module: %d.", ret); | |
819 | return SR_ERR; | |
820 | } | |
821 | if (!packet_out) { | |
822 | /* | |
823 | * If any of the transforms don't return an output | |
824 | * packet, abort. | |
825 | */ | |
826 | sr_spew("Transform module didn't return a packet, aborting."); | |
827 | return SR_OK; | |
828 | } else { | |
829 | /* | |
830 | * Use this transform module's output packet as input | |
831 | * for the next transform module. | |
832 | */ | |
833 | packet_in = packet_out; | |
834 | } | |
835 | } | |
4ec436c4 | 836 | packet = packet_in; |
c0a1e532 UH |
837 | |
838 | /* | |
839 | * If the last transform did output a packet, pass it to all datafeed | |
840 | * callbacks. | |
841 | */ | |
3337e9a1 | 842 | for (l = sdi->session->datafeed_callbacks; l; l = l->next) { |
18beaeff BV |
843 | if (sr_log_loglevel_get() >= SR_LOG_DBG) |
844 | datafeed_dump(packet); | |
2726474a ML |
845 | cb_struct = l->data; |
846 | cb_struct->cb(sdi, packet, cb_struct->cb_data); | |
a1bb33af | 847 | } |
9f45fb3a | 848 | |
e0508e67 | 849 | return SR_OK; |
a1bb33af UH |
850 | } |
851 | ||
6b2d8d3e UH |
852 | /** |
853 | * Add an event source for a file descriptor. | |
854 | * | |
7efe889e | 855 | * @param session The session to use. Must not be NULL. |
6b2d8d3e | 856 | * @param pollfd The GPollFD. |
04cb9157 MH |
857 | * @param[in] timeout Max time to wait before the callback is called, |
858 | * ignored if 0. | |
6b2d8d3e UH |
859 | * @param cb Callback function to add. Must not be NULL. |
860 | * @param cb_data Data for the callback function. Can be NULL. | |
62d7945f DE |
861 | * @param poll_object Handle by which the source is identified |
862 | * @param is_usb TRUE for a libusb polling source | |
6b2d8d3e | 863 | * |
04cb9157 MH |
864 | * @retval SR_OK Success. |
865 | * @retval SR_ERR_ARG Invalid argument. | |
6b2d8d3e | 866 | */ |
62d7945f DE |
867 | SR_PRIV int sr_session_source_add_internal(struct sr_session *session, |
868 | GPollFD *pollfd, int timeout, sr_receive_data_callback cb, | |
869 | void *cb_data, gintptr poll_object, gboolean is_usb) | |
544a4582 BV |
870 | { |
871 | struct source *new_sources, *s; | |
aac0ea25 | 872 | GPollFD *new_pollfds; |
544a4582 | 873 | |
d08490aa | 874 | if (!cb) { |
a421dc1d | 875 | sr_err("%s: cb was NULL", __func__); |
e0508e67 | 876 | return SR_ERR_ARG; |
9f45fb3a UH |
877 | } |
878 | ||
1f9813eb | 879 | /* Note: cb_data can be NULL, that's not a bug. */ |
9f45fb3a | 880 | |
91219afc | 881 | new_pollfds = g_realloc(session->pollfds, |
2ac2e629 | 882 | sizeof(GPollFD) * (session->num_sources + 1)); |
91219afc | 883 | new_sources = g_realloc(session->sources, sizeof(struct source) * |
2ac2e629 | 884 | (session->num_sources + 1)); |
544a4582 | 885 | |
b7e94111 LPC |
886 | new_pollfds[session->num_sources] = *pollfd; |
887 | s = &new_sources[session->num_sources++]; | |
62d7945f DE |
888 | if (timeout > 0) |
889 | s->due = g_get_monotonic_time() + INT64_C(1000) * timeout; | |
890 | else | |
891 | s->due = INT64_MAX; | |
d08490aa | 892 | s->cb = cb; |
1f9813eb | 893 | s->cb_data = cb_data; |
aac0ea25 | 894 | s->poll_object = poll_object; |
62d7945f DE |
895 | s->timeout = timeout; |
896 | s->is_usb = is_usb; | |
b7e94111 LPC |
897 | session->pollfds = new_pollfds; |
898 | session->sources = new_sources; | |
544a4582 | 899 | |
e0508e67 | 900 | return SR_OK; |
544a4582 BV |
901 | } |
902 | ||
9f45fb3a | 903 | /** |
6b2d8d3e | 904 | * Add an event source for a file descriptor. |
9f45fb3a | 905 | * |
7efe889e | 906 | * @param session The session to use. Must not be NULL. |
aac0ea25 LPC |
907 | * @param fd The file descriptor. |
908 | * @param events Events to check for. | |
909 | * @param timeout Max time to wait before the callback is called, ignored if 0. | |
910 | * @param cb Callback function to add. Must not be NULL. | |
911 | * @param cb_data Data for the callback function. Can be NULL. | |
9f45fb3a | 912 | * |
04cb9157 MH |
913 | * @retval SR_OK Success. |
914 | * @retval SR_ERR_ARG Invalid argument. | |
47117241 UH |
915 | * |
916 | * @since 0.3.0 | |
aac0ea25 | 917 | */ |
0812c40e ML |
918 | SR_API int sr_session_source_add(struct sr_session *session, int fd, |
919 | int events, int timeout, sr_receive_data_callback cb, void *cb_data) | |
aac0ea25 LPC |
920 | { |
921 | GPollFD p; | |
922 | ||
aac0ea25 LPC |
923 | p.fd = fd; |
924 | p.events = events; | |
89efe064 | 925 | p.revents = 0; |
aac0ea25 | 926 | |
62d7945f DE |
927 | return sr_session_source_add_internal(session, &p, timeout, |
928 | cb, cb_data, fd, FALSE); | |
aac0ea25 LPC |
929 | } |
930 | ||
931 | /** | |
1a895c61 | 932 | * Add an event source for a GPollFD. |
aac0ea25 | 933 | * |
7efe889e | 934 | * @param session The session to use. Must not be NULL. |
aac0ea25 LPC |
935 | * @param pollfd The GPollFD. |
936 | * @param timeout Max time to wait before the callback is called, ignored if 0. | |
937 | * @param cb Callback function to add. Must not be NULL. | |
938 | * @param cb_data Data for the callback function. Can be NULL. | |
44dae539 | 939 | * |
04cb9157 MH |
940 | * @retval SR_OK Success. |
941 | * @retval SR_ERR_ARG Invalid argument. | |
47117241 UH |
942 | * |
943 | * @since 0.3.0 | |
9f45fb3a | 944 | */ |
0812c40e ML |
945 | SR_API int sr_session_source_add_pollfd(struct sr_session *session, |
946 | GPollFD *pollfd, int timeout, sr_receive_data_callback cb, | |
947 | void *cb_data) | |
aac0ea25 | 948 | { |
62d7945f DE |
949 | return sr_session_source_add_internal(session, pollfd, timeout, |
950 | cb, cb_data, (gintptr)pollfd, FALSE); | |
aac0ea25 LPC |
951 | } |
952 | ||
953 | /** | |
1a895c61 | 954 | * Add an event source for a GIOChannel. |
aac0ea25 | 955 | * |
7efe889e | 956 | * @param session The session to use. Must not be NULL. |
aac0ea25 LPC |
957 | * @param channel The GIOChannel. |
958 | * @param events Events to poll on. | |
959 | * @param timeout Max time to wait before the callback is called, ignored if 0. | |
960 | * @param cb Callback function to add. Must not be NULL. | |
961 | * @param cb_data Data for the callback function. Can be NULL. | |
962 | * | |
04cb9157 MH |
963 | * @retval SR_OK Success. |
964 | * @retval SR_ERR_ARG Invalid argument. | |
47117241 UH |
965 | * |
966 | * @since 0.3.0 | |
aac0ea25 | 967 | */ |
0812c40e ML |
968 | SR_API int sr_session_source_add_channel(struct sr_session *session, |
969 | GIOChannel *channel, int events, int timeout, | |
970 | sr_receive_data_callback cb, void *cb_data) | |
aac0ea25 LPC |
971 | { |
972 | GPollFD p; | |
973 | ||
974 | #ifdef _WIN32 | |
6b2d8d3e | 975 | g_io_channel_win32_make_pollfd(channel, events, &p); |
aac0ea25 LPC |
976 | #else |
977 | p.fd = g_io_channel_unix_get_fd(channel); | |
978 | p.events = events; | |
89efe064 | 979 | p.revents = 0; |
aac0ea25 | 980 | #endif |
62d7945f DE |
981 | return sr_session_source_add_internal(session, &p, timeout, cb, |
982 | cb_data, (gintptr)channel, FALSE); | |
aac0ea25 LPC |
983 | } |
984 | ||
6b2d8d3e UH |
985 | /** |
986 | * Remove the source belonging to the specified channel. | |
987 | * | |
7efe889e | 988 | * @param session The session to use. Must not be NULL. |
04cb9157 | 989 | * @param poll_object The channel for which the source should be removed. |
6b2d8d3e | 990 | * |
04cb9157 MH |
991 | * @retval SR_OK Success |
992 | * @retval SR_ERR_ARG Invalid arguments | |
04cb9157 | 993 | * @retval SR_ERR_BUG Internal error |
6b2d8d3e | 994 | */ |
102f1239 | 995 | static int _sr_session_source_remove(struct sr_session *session, gintptr poll_object) |
544a4582 | 996 | { |
b7e94111 | 997 | unsigned int old; |
544a4582 | 998 | |
b7e94111 | 999 | if (!session->sources || !session->num_sources) { |
a421dc1d | 1000 | sr_err("%s: sources was NULL", __func__); |
0abee507 | 1001 | return SR_ERR_BUG; |
e0508e67 UH |
1002 | } |
1003 | ||
b7e94111 LPC |
1004 | for (old = 0; old < session->num_sources; old++) { |
1005 | if (session->sources[old].poll_object == poll_object) | |
2bccd322 | 1006 | break; |
9f45fb3a UH |
1007 | } |
1008 | ||
2bccd322 | 1009 | /* fd not found, nothing to do */ |
b7e94111 | 1010 | if (old == session->num_sources) |
2bccd322 LPC |
1011 | return SR_OK; |
1012 | ||
91219afc | 1013 | session->num_sources--; |
2bccd322 | 1014 | |
b7e94111 | 1015 | if (old != session->num_sources) { |
91219afc | 1016 | memmove(&session->pollfds[old], &session->pollfds[old + 1], |
b7e94111 | 1017 | (session->num_sources - old) * sizeof(GPollFD)); |
91219afc | 1018 | memmove(&session->sources[old], &session->sources[old + 1], |
b7e94111 | 1019 | (session->num_sources - old) * sizeof(struct source)); |
9f45fb3a | 1020 | } |
544a4582 | 1021 | |
91219afc UH |
1022 | session->pollfds = g_realloc(session->pollfds, sizeof(GPollFD) * session->num_sources); |
1023 | session->sources = g_realloc(session->sources, sizeof(struct source) * session->num_sources); | |
2bccd322 | 1024 | |
e0508e67 | 1025 | return SR_OK; |
544a4582 | 1026 | } |
aac0ea25 | 1027 | |
6b2d8d3e | 1028 | /** |
aac0ea25 LPC |
1029 | * Remove the source belonging to the specified file descriptor. |
1030 | * | |
7efe889e | 1031 | * @param session The session to use. Must not be NULL. |
1a895c61 | 1032 | * @param fd The file descriptor for which the source should be removed. |
aac0ea25 | 1033 | * |
04cb9157 MH |
1034 | * @retval SR_OK Success |
1035 | * @retval SR_ERR_ARG Invalid argument | |
04cb9157 | 1036 | * @retval SR_ERR_BUG Internal error. |
47117241 UH |
1037 | * |
1038 | * @since 0.3.0 | |
aac0ea25 | 1039 | */ |
0812c40e | 1040 | SR_API int sr_session_source_remove(struct sr_session *session, int fd) |
aac0ea25 | 1041 | { |
102f1239 | 1042 | return _sr_session_source_remove(session, (gintptr)fd); |
aac0ea25 LPC |
1043 | } |
1044 | ||
1045 | /** | |
1046 | * Remove the source belonging to the specified poll descriptor. | |
1047 | * | |
7efe889e | 1048 | * @param session The session to use. Must not be NULL. |
aac0ea25 LPC |
1049 | * @param pollfd The poll descriptor for which the source should be removed. |
1050 | * | |
1051 | * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments, or | |
1052 | * SR_ERR_MALLOC upon memory allocation errors, SR_ERR_BUG upon | |
1053 | * internal errors. | |
47117241 UH |
1054 | * |
1055 | * @since 0.2.0 | |
aac0ea25 | 1056 | */ |
0812c40e ML |
1057 | SR_API int sr_session_source_remove_pollfd(struct sr_session *session, |
1058 | GPollFD *pollfd) | |
aac0ea25 | 1059 | { |
102f1239 | 1060 | return _sr_session_source_remove(session, (gintptr)pollfd); |
aac0ea25 LPC |
1061 | } |
1062 | ||
6b2d8d3e | 1063 | /** |
aac0ea25 LPC |
1064 | * Remove the source belonging to the specified channel. |
1065 | * | |
7efe889e | 1066 | * @param session The session to use. Must not be NULL. |
1a895c61 | 1067 | * @param channel The channel for which the source should be removed. |
aac0ea25 | 1068 | * |
04cb9157 MH |
1069 | * @retval SR_OK Success. |
1070 | * @retval SR_ERR_ARG Invalid argument. | |
04cb9157 | 1071 | * @return SR_ERR_BUG Internal error. |
47117241 UH |
1072 | * |
1073 | * @since 0.2.0 | |
aac0ea25 | 1074 | */ |
0812c40e ML |
1075 | SR_API int sr_session_source_remove_channel(struct sr_session *session, |
1076 | GIOChannel *channel) | |
aac0ea25 | 1077 | { |
102f1239 | 1078 | return _sr_session_source_remove(session, (gintptr)channel); |
aac0ea25 | 1079 | } |
7b870c38 | 1080 | |
ee29d92e | 1081 | static void copy_src(struct sr_config *src, struct sr_datafeed_meta *meta_copy) |
8143cfdc | 1082 | { |
8143cfdc | 1083 | g_variant_ref(src->data); |
ee29d92e AJ |
1084 | meta_copy->config = g_slist_append(meta_copy->config, |
1085 | g_memdup(src, sizeof(struct sr_config))); | |
8143cfdc BV |
1086 | } |
1087 | ||
1088 | SR_PRIV int sr_packet_copy(const struct sr_datafeed_packet *packet, | |
1089 | struct sr_datafeed_packet **copy) | |
1090 | { | |
1091 | const struct sr_datafeed_meta *meta; | |
1092 | struct sr_datafeed_meta *meta_copy; | |
1093 | const struct sr_datafeed_logic *logic; | |
1094 | struct sr_datafeed_logic *logic_copy; | |
1095 | const struct sr_datafeed_analog *analog; | |
1096 | struct sr_datafeed_analog *analog_copy; | |
1097 | uint8_t *payload; | |
1098 | ||
1099 | *copy = g_malloc0(sizeof(struct sr_datafeed_packet)); | |
1100 | (*copy)->type = packet->type; | |
1101 | ||
1102 | switch (packet->type) { | |
1103 | case SR_DF_TRIGGER: | |
1104 | case SR_DF_END: | |
1105 | /* No payload. */ | |
1106 | break; | |
1107 | case SR_DF_HEADER: | |
1108 | payload = g_malloc(sizeof(struct sr_datafeed_header)); | |
1109 | memcpy(payload, packet->payload, sizeof(struct sr_datafeed_header)); | |
1110 | (*copy)->payload = payload; | |
1111 | break; | |
1112 | case SR_DF_META: | |
1113 | meta = packet->payload; | |
ee29d92e AJ |
1114 | meta_copy = g_malloc0(sizeof(struct sr_datafeed_meta)); |
1115 | g_slist_foreach(meta->config, (GFunc)copy_src, meta_copy->config); | |
8143cfdc BV |
1116 | (*copy)->payload = meta_copy; |
1117 | break; | |
1118 | case SR_DF_LOGIC: | |
1119 | logic = packet->payload; | |
1120 | logic_copy = g_malloc(sizeof(logic)); | |
1121 | logic_copy->length = logic->length; | |
1122 | logic_copy->unitsize = logic->unitsize; | |
1123 | memcpy(logic_copy->data, logic->data, logic->length * logic->unitsize); | |
1124 | (*copy)->payload = logic_copy; | |
1125 | break; | |
1126 | case SR_DF_ANALOG: | |
1127 | analog = packet->payload; | |
1128 | analog_copy = g_malloc(sizeof(analog)); | |
1129 | analog_copy->channels = g_slist_copy(analog->channels); | |
1130 | analog_copy->num_samples = analog->num_samples; | |
1131 | analog_copy->mq = analog->mq; | |
1132 | analog_copy->unit = analog->unit; | |
1133 | analog_copy->mqflags = analog->mqflags; | |
1134 | memcpy(analog_copy->data, analog->data, | |
1135 | analog->num_samples * sizeof(float)); | |
1136 | (*copy)->payload = analog_copy; | |
1137 | break; | |
1138 | default: | |
1139 | sr_err("Unknown packet type %d", packet->type); | |
1140 | return SR_ERR; | |
1141 | } | |
1142 | ||
1143 | return SR_OK; | |
1144 | } | |
1145 | ||
1146 | void sr_packet_free(struct sr_datafeed_packet *packet) | |
1147 | { | |
1148 | const struct sr_datafeed_meta *meta; | |
1149 | const struct sr_datafeed_logic *logic; | |
1150 | const struct sr_datafeed_analog *analog; | |
1151 | struct sr_config *src; | |
1152 | GSList *l; | |
1153 | ||
1154 | switch (packet->type) { | |
1155 | case SR_DF_TRIGGER: | |
1156 | case SR_DF_END: | |
1157 | /* No payload. */ | |
1158 | break; | |
1159 | case SR_DF_HEADER: | |
1160 | /* Payload is a simple struct. */ | |
1161 | g_free((void *)packet->payload); | |
1162 | break; | |
1163 | case SR_DF_META: | |
1164 | meta = packet->payload; | |
1165 | for (l = meta->config; l; l = l->next) { | |
1166 | src = l->data; | |
1167 | g_variant_unref(src->data); | |
1168 | g_free(src); | |
1169 | } | |
1170 | g_slist_free(meta->config); | |
1171 | g_free((void *)packet->payload); | |
1172 | break; | |
1173 | case SR_DF_LOGIC: | |
1174 | logic = packet->payload; | |
1175 | g_free(logic->data); | |
1176 | g_free((void *)packet->payload); | |
1177 | break; | |
1178 | case SR_DF_ANALOG: | |
1179 | analog = packet->payload; | |
1180 | g_slist_free(analog->channels); | |
1181 | g_free(analog->data); | |
1182 | g_free((void *)packet->payload); | |
1183 | break; | |
1184 | default: | |
1185 | sr_err("Unknown packet type %d", packet->type); | |
1186 | } | |
1187 | g_free(packet); | |
1188 | ||
1189 | } | |
1190 | ||
7b870c38 | 1191 | /** @} */ |