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Commit | Line | Data |
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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 { |
faa5d7d9 DE |
48 | int64_t timeout; /* microseconds */ |
49 | int64_t due; /* microseconds */ | |
144f6660 | 50 | sr_receive_data_callback cb; |
1f9813eb | 51 | void *cb_data; |
aac0ea25 LPC |
52 | |
53 | /* This is used to keep track of the object (fd, pollfd or channel) which is | |
54 | * being polled and will be used to match the source when removing it again. | |
55 | */ | |
56 | gintptr poll_object; | |
62d7945f | 57 | |
62d7945f | 58 | gboolean is_usb; |
faa5d7d9 | 59 | gboolean triggered; |
544a4582 BV |
60 | }; |
61 | ||
2726474a | 62 | struct datafeed_callback { |
144f6660 | 63 | sr_datafeed_callback cb; |
2726474a ML |
64 | void *cb_data; |
65 | }; | |
66 | ||
9f45fb3a UH |
67 | /** |
68 | * Create a new session. | |
7efe889e | 69 | * |
61e6e2da | 70 | * @param ctx The context in which to create the new session. |
7efe889e UH |
71 | * @param new_session This will contain a pointer to the newly created |
72 | * session if the return value is SR_OK, otherwise the value | |
73 | * is undefined and should not be used. Must not be NULL. | |
9f45fb3a | 74 | * |
0812c40e | 75 | * @retval SR_OK Success. |
41de54ff | 76 | * @retval SR_ERR_ARG Invalid argument. |
47117241 | 77 | * |
0812c40e | 78 | * @since 0.4.0 |
9f45fb3a | 79 | */ |
61e6e2da ML |
80 | SR_API int sr_session_new(struct sr_context *ctx, |
81 | struct sr_session **new_session) | |
a1bb33af | 82 | { |
3337e9a1 | 83 | struct sr_session *session; |
a1bb33af | 84 | |
41de54ff UH |
85 | if (!new_session) |
86 | return SR_ERR_ARG; | |
87 | ||
3337e9a1 | 88 | session = g_malloc0(sizeof(struct sr_session)); |
b7e94111 | 89 | |
4ed5d21d | 90 | session->ctx = ctx; |
faa5d7d9 DE |
91 | |
92 | session->sources = g_array_new(FALSE, FALSE, sizeof(struct source)); | |
93 | session->pollfds = g_array_new(FALSE, FALSE, sizeof(GPollFD)); | |
94 | ||
3337e9a1 | 95 | g_mutex_init(&session->stop_mutex); |
0812c40e | 96 | |
3337e9a1 | 97 | *new_session = session; |
0812c40e ML |
98 | |
99 | return SR_OK; | |
a1bb33af UH |
100 | } |
101 | ||
9f45fb3a | 102 | /** |
0812c40e | 103 | * Destroy a session. |
9f45fb3a UH |
104 | * This frees up all memory used by the session. |
105 | * | |
7efe889e UH |
106 | * @param session The session to destroy. Must not be NULL. |
107 | * | |
04cb9157 | 108 | * @retval SR_OK Success. |
0812c40e | 109 | * @retval SR_ERR_ARG Invalid session passed. |
47117241 | 110 | * |
0812c40e | 111 | * @since 0.4.0 |
9f45fb3a | 112 | */ |
0812c40e | 113 | SR_API int sr_session_destroy(struct sr_session *session) |
a1bb33af | 114 | { |
9f45fb3a | 115 | if (!session) { |
a421dc1d | 116 | sr_err("%s: session was NULL", __func__); |
0812c40e | 117 | return SR_ERR_ARG; |
9f45fb3a UH |
118 | } |
119 | ||
0812c40e | 120 | sr_session_dev_remove_all(session); |
33c6e4c5 | 121 | g_mutex_clear(&session->stop_mutex); |
3d68b612 BV |
122 | if (session->trigger) |
123 | sr_trigger_free(session->trigger); | |
33c6e4c5 | 124 | |
1de3cced ML |
125 | g_slist_free_full(session->owned_devs, (GDestroyNotify)sr_dev_inst_free); |
126 | ||
faa5d7d9 DE |
127 | g_array_unref(session->pollfds); |
128 | g_array_unref(session->sources); | |
129 | ||
a1bb33af | 130 | g_free(session); |
0812c40e | 131 | |
e0508e67 | 132 | return SR_OK; |
a1bb33af UH |
133 | } |
134 | ||
9f45fb3a | 135 | /** |
0812c40e | 136 | * Remove all the devices from a session. |
9f45fb3a UH |
137 | * |
138 | * The session itself (i.e., the struct sr_session) is not free'd and still | |
139 | * exists after this function returns. | |
140 | * | |
7efe889e UH |
141 | * @param session The session to use. Must not be NULL. |
142 | * | |
04cb9157 | 143 | * @retval SR_OK Success. |
0812c40e | 144 | * @retval SR_ERR_BUG Invalid session passed. |
47117241 | 145 | * |
0812c40e | 146 | * @since 0.4.0 |
9f45fb3a | 147 | */ |
0812c40e | 148 | SR_API int sr_session_dev_remove_all(struct sr_session *session) |
a1bb33af | 149 | { |
0812c40e ML |
150 | struct sr_dev_inst *sdi; |
151 | GSList *l; | |
152 | ||
9f45fb3a | 153 | if (!session) { |
a421dc1d | 154 | sr_err("%s: session was NULL", __func__); |
0812c40e ML |
155 | return SR_ERR_ARG; |
156 | } | |
157 | ||
158 | for (l = session->devs; l; l = l->next) { | |
159 | sdi = (struct sr_dev_inst *) l->data; | |
160 | sdi->session = NULL; | |
9f45fb3a UH |
161 | } |
162 | ||
681803df | 163 | g_slist_free(session->devs); |
bb7ef793 | 164 | session->devs = NULL; |
e0508e67 UH |
165 | |
166 | return SR_OK; | |
a1bb33af UH |
167 | } |
168 | ||
9f45fb3a | 169 | /** |
0812c40e | 170 | * Add a device instance to a session. |
9f45fb3a | 171 | * |
7efe889e | 172 | * @param session The session to add to. Must not be NULL. |
0812c40e | 173 | * @param sdi The device instance to add to a session. Must not |
de4d3f99 BV |
174 | * be NULL. Also, sdi->driver and sdi->driver->dev_open must |
175 | * not be NULL. | |
9f45fb3a | 176 | * |
04cb9157 MH |
177 | * @retval SR_OK Success. |
178 | * @retval SR_ERR_ARG Invalid argument. | |
47117241 | 179 | * |
0812c40e | 180 | * @since 0.4.0 |
9f45fb3a | 181 | */ |
0812c40e ML |
182 | SR_API int sr_session_dev_add(struct sr_session *session, |
183 | struct sr_dev_inst *sdi) | |
a1bb33af | 184 | { |
5451816f | 185 | int ret; |
a1bb33af | 186 | |
de4d3f99 | 187 | if (!sdi) { |
a421dc1d | 188 | sr_err("%s: sdi was NULL", __func__); |
9f45fb3a UH |
189 | return SR_ERR_ARG; |
190 | } | |
191 | ||
d6eb0c33 | 192 | if (!session) { |
a421dc1d | 193 | sr_err("%s: session was NULL", __func__); |
0812c40e ML |
194 | return SR_ERR_ARG; |
195 | } | |
196 | ||
197 | /* If sdi->session is not NULL, the device is already in this or | |
198 | * another session. */ | |
199 | if (sdi->session) { | |
200 | sr_err("%s: already assigned to session", __func__); | |
201 | return SR_ERR_ARG; | |
d6eb0c33 UH |
202 | } |
203 | ||
de4d3f99 BV |
204 | /* If sdi->driver is NULL, this is a virtual device. */ |
205 | if (!sdi->driver) { | |
d6eb0c33 | 206 | /* Just add the device, don't run dev_open(). */ |
de4d3f99 | 207 | session->devs = g_slist_append(session->devs, (gpointer)sdi); |
0812c40e | 208 | sdi->session = session; |
d6eb0c33 | 209 | return SR_OK; |
9f45fb3a UH |
210 | } |
211 | ||
de4d3f99 BV |
212 | /* sdi->driver is non-NULL (i.e. we have a real device). */ |
213 | if (!sdi->driver->dev_open) { | |
a421dc1d | 214 | sr_err("%s: sdi->driver->dev_open was NULL", __func__); |
8ec95d22 | 215 | return SR_ERR_BUG; |
9f45fb3a UH |
216 | } |
217 | ||
de4d3f99 | 218 | session->devs = g_slist_append(session->devs, (gpointer)sdi); |
0812c40e | 219 | sdi->session = session; |
aa4b1107 | 220 | |
5451816f | 221 | if (session->running) { |
32b7cd4f DE |
222 | /* Adding a device to a running session. Commit settings |
223 | * and start acquisition on that device now. */ | |
224 | if ((ret = sr_config_commit(sdi)) != SR_OK) { | |
225 | sr_err("Failed to commit device settings before " | |
226 | "starting acquisition in running session (%s)", | |
227 | sr_strerror(ret)); | |
228 | return ret; | |
229 | } | |
5451816f | 230 | if ((ret = sdi->driver->dev_acquisition_start(sdi, |
32b7cd4f | 231 | (void *)sdi)) != SR_OK) { |
5451816f | 232 | sr_err("Failed to start acquisition of device in " |
32b7cd4f DE |
233 | "running session (%s)", sr_strerror(ret)); |
234 | return ret; | |
235 | } | |
5451816f BV |
236 | } |
237 | ||
e46b8fb1 | 238 | return SR_OK; |
a1bb33af UH |
239 | } |
240 | ||
2bb311b4 | 241 | /** |
0812c40e | 242 | * List all device instances attached to a session. |
2bb311b4 | 243 | * |
7efe889e | 244 | * @param session The session to use. Must not be NULL. |
2bb311b4 BV |
245 | * @param devlist A pointer where the device instance list will be |
246 | * stored on return. If no devices are in the session, | |
247 | * this will be NULL. Each element in the list points | |
248 | * to a struct sr_dev_inst *. | |
249 | * The list must be freed by the caller, but not the | |
250 | * elements pointed to. | |
251 | * | |
04cb9157 | 252 | * @retval SR_OK Success. |
0812c40e | 253 | * @retval SR_ERR_ARG Invalid argument. |
47117241 | 254 | * |
0812c40e | 255 | * @since 0.4.0 |
2bb311b4 | 256 | */ |
0812c40e | 257 | SR_API int sr_session_dev_list(struct sr_session *session, GSList **devlist) |
2bb311b4 | 258 | { |
2bb311b4 | 259 | if (!session) |
0812c40e ML |
260 | return SR_ERR_ARG; |
261 | ||
262 | if (!devlist) | |
263 | return SR_ERR_ARG; | |
2bb311b4 BV |
264 | |
265 | *devlist = g_slist_copy(session->devs); | |
266 | ||
267 | return SR_OK; | |
268 | } | |
269 | ||
9f45fb3a | 270 | /** |
0812c40e | 271 | * Remove all datafeed callbacks in a session. |
9f45fb3a | 272 | * |
7efe889e UH |
273 | * @param session The session to use. Must not be NULL. |
274 | * | |
04cb9157 | 275 | * @retval SR_OK Success. |
0812c40e | 276 | * @retval SR_ERR_ARG Invalid session passed. |
47117241 | 277 | * |
0812c40e | 278 | * @since 0.4.0 |
9f45fb3a | 279 | */ |
0812c40e | 280 | SR_API int sr_session_datafeed_callback_remove_all(struct sr_session *session) |
a1bb33af | 281 | { |
9f45fb3a | 282 | if (!session) { |
a421dc1d | 283 | sr_err("%s: session was NULL", __func__); |
0812c40e | 284 | return SR_ERR_ARG; |
9f45fb3a UH |
285 | } |
286 | ||
2726474a | 287 | g_slist_free_full(session->datafeed_callbacks, g_free); |
a1bb33af | 288 | session->datafeed_callbacks = NULL; |
e0508e67 UH |
289 | |
290 | return SR_OK; | |
a1bb33af UH |
291 | } |
292 | ||
9f45fb3a | 293 | /** |
0812c40e | 294 | * Add a datafeed callback to a session. |
9f45fb3a | 295 | * |
7efe889e | 296 | * @param session The session to use. Must not be NULL. |
d08490aa | 297 | * @param cb Function to call when a chunk of data is received. |
0abee507 | 298 | * Must not be NULL. |
85222791 | 299 | * @param cb_data Opaque pointer passed in by the caller. |
a1645fcd | 300 | * |
04cb9157 MH |
301 | * @retval SR_OK Success. |
302 | * @retval SR_ERR_BUG No session exists. | |
47117241 UH |
303 | * |
304 | * @since 0.3.0 | |
9f45fb3a | 305 | */ |
0812c40e ML |
306 | SR_API int sr_session_datafeed_callback_add(struct sr_session *session, |
307 | sr_datafeed_callback cb, void *cb_data) | |
a1bb33af | 308 | { |
2726474a ML |
309 | struct datafeed_callback *cb_struct; |
310 | ||
9f45fb3a | 311 | if (!session) { |
a421dc1d | 312 | sr_err("%s: session was NULL", __func__); |
e0508e67 | 313 | return SR_ERR_BUG; |
9f45fb3a UH |
314 | } |
315 | ||
0abee507 | 316 | if (!cb) { |
a421dc1d | 317 | sr_err("%s: cb was NULL", __func__); |
0abee507 UH |
318 | return SR_ERR_ARG; |
319 | } | |
9f45fb3a | 320 | |
91219afc | 321 | cb_struct = g_malloc0(sizeof(struct datafeed_callback)); |
2726474a ML |
322 | cb_struct->cb = cb; |
323 | cb_struct->cb_data = cb_data; | |
324 | ||
62c82025 | 325 | session->datafeed_callbacks = |
2726474a | 326 | g_slist_append(session->datafeed_callbacks, cb_struct); |
e0508e67 UH |
327 | |
328 | return SR_OK; | |
a1bb33af UH |
329 | } |
330 | ||
9f42e2e6 UH |
331 | /** |
332 | * Get the trigger assigned to this session. | |
333 | * | |
334 | * @param session The session to use. | |
335 | * | |
336 | * @retval NULL Invalid (NULL) session was passed to the function. | |
337 | * @retval other The trigger assigned to this session (can be NULL). | |
338 | * | |
339 | * @since 0.4.0 | |
340 | */ | |
0812c40e | 341 | SR_API struct sr_trigger *sr_session_trigger_get(struct sr_session *session) |
7b5e6d29 | 342 | { |
9f42e2e6 UH |
343 | if (!session) |
344 | return NULL; | |
345 | ||
7b5e6d29 BV |
346 | return session->trigger; |
347 | } | |
348 | ||
9f42e2e6 UH |
349 | /** |
350 | * Set the trigger of this session. | |
351 | * | |
352 | * @param session The session to use. Must not be NULL. | |
353 | * @param trig The trigger to assign to this session. Can be NULL. | |
354 | * | |
355 | * @retval SR_OK Success. | |
356 | * @retval SR_ERR_ARG Invalid argument. | |
357 | * | |
358 | * @since 0.4.0 | |
359 | */ | |
0812c40e | 360 | SR_API int sr_session_trigger_set(struct sr_session *session, struct sr_trigger *trig) |
7b5e6d29 | 361 | { |
9f42e2e6 UH |
362 | if (!session) |
363 | return SR_ERR_ARG; | |
364 | ||
7b5e6d29 BV |
365 | session->trigger = trig; |
366 | ||
367 | return SR_OK; | |
368 | } | |
369 | ||
32af282c DE |
370 | static gboolean sr_session_check_aborted(struct sr_session *session) |
371 | { | |
372 | gboolean stop; | |
373 | ||
374 | g_mutex_lock(&session->stop_mutex); | |
375 | stop = session->abort_session; | |
376 | if (stop) { | |
377 | sr_session_stop_sync(session); | |
378 | /* But once is enough. */ | |
379 | session->abort_session = FALSE; | |
380 | } | |
381 | g_mutex_unlock(&session->stop_mutex); | |
382 | ||
383 | return stop; | |
384 | } | |
385 | ||
faa5d7d9 DE |
386 | static int _sr_session_source_remove(struct sr_session *session, gintptr poll_object); |
387 | ||
b483be74 | 388 | /** |
faa5d7d9 | 389 | * Poll the session's event sources. |
b483be74 | 390 | * |
7efe889e | 391 | * @param session The session to use. Must not be NULL. |
04cb9157 | 392 | * @retval SR_OK Success. |
f3f19d11 | 393 | * @retval SR_ERR Error occurred. |
b483be74 | 394 | */ |
62d7945f | 395 | static int sr_session_iteration(struct sr_session *session) |
544a4582 | 396 | { |
faa5d7d9 DE |
397 | int64_t start_time, stop_time, min_due, due; |
398 | int timeout_ms; | |
b7e94111 | 399 | unsigned int i; |
faa5d7d9 DE |
400 | int ret; |
401 | int fd; | |
4399cc0f | 402 | int revents; |
faa5d7d9 | 403 | gboolean triggered, stopped; |
4399cc0f DE |
404 | struct source *source; |
405 | GPollFD *pollfd; | |
62d7945f | 406 | gintptr poll_object; |
bb5f6110 | 407 | #ifdef HAVE_LIBUSB_1_0 |
62d7945f | 408 | int64_t usb_due; |
bb5f6110 ML |
409 | struct timeval tv; |
410 | #endif | |
faa5d7d9 | 411 | if (session->sources->len == 0) { |
62d7945f DE |
412 | sr_session_check_aborted(session); |
413 | return SR_OK; | |
414 | } | |
415 | start_time = g_get_monotonic_time(); | |
416 | min_due = INT64_MAX; | |
bb5f6110 | 417 | |
faa5d7d9 DE |
418 | for (i = 0; i < session->sources->len; ++i) { |
419 | source = &g_array_index(session->sources, struct source, i); | |
420 | if (source->due < min_due) | |
421 | min_due = source->due; | |
422 | source->triggered = FALSE; | |
62d7945f | 423 | } |
bb5f6110 | 424 | #ifdef HAVE_LIBUSB_1_0 |
62d7945f | 425 | usb_due = INT64_MAX; |
1190c653 | 426 | if (session->ctx->usb_source_present) { |
1190c653 UH |
427 | ret = libusb_get_next_timeout(session->ctx->libusb_ctx, &tv); |
428 | if (ret < 0) { | |
429 | sr_err("Error getting libusb timeout: %s", | |
430 | libusb_error_name(ret)); | |
431 | return SR_ERR; | |
432 | } else if (ret == 1) { | |
62d7945f DE |
433 | usb_due = start_time + tv.tv_usec |
434 | + (int64_t)tv.tv_sec * G_USEC_PER_SEC; | |
435 | if (usb_due < min_due) | |
436 | min_due = usb_due; | |
1190c653 | 437 | } |
bb5f6110 ML |
438 | } |
439 | #endif | |
faa5d7d9 DE |
440 | if (min_due == INT64_MAX) |
441 | timeout_ms = -1; | |
442 | else if (min_due > start_time) | |
443 | timeout_ms = MIN((min_due - start_time + 999) / 1000, INT_MAX); | |
62d7945f | 444 | else |
faa5d7d9 | 445 | timeout_ms = 0; |
544a4582 | 446 | |
faa5d7d9 DE |
447 | ret = g_poll((GPollFD *)session->pollfds->data, |
448 | session->pollfds->len, timeout_ms); | |
4399cc0f | 449 | #ifdef G_OS_UNIX |
32af282c DE |
450 | if (ret < 0 && errno != EINTR) { |
451 | sr_err("Error in poll: %s", g_strerror(errno)); | |
452 | return SR_ERR; | |
453 | } | |
4399cc0f DE |
454 | #else |
455 | if (ret < 0) { | |
456 | sr_err("Error in poll: %d", ret); | |
457 | return SR_ERR; | |
458 | } | |
459 | #endif | |
62d7945f | 460 | stop_time = g_get_monotonic_time(); |
b5887bd0 DE |
461 | |
462 | sr_spew("%s: poll %d ms timeout, %g ms elapsed, %d events", | |
463 | __func__, timeout_ms, 0.001 * (stop_time - start_time), ret); | |
464 | ||
faa5d7d9 | 465 | triggered = FALSE; |
32af282c DE |
466 | stopped = FALSE; |
467 | ||
faa5d7d9 DE |
468 | for (i = 0; i < session->sources->len; ++i) { |
469 | source = &g_array_index(session->sources, struct source, i); | |
470 | if (source->triggered) | |
471 | continue; /* already handled */ | |
472 | ||
473 | poll_object = source->poll_object; | |
474 | fd = (int)poll_object; | |
475 | revents = 0; | |
476 | ||
477 | if (i < session->pollfds->len) { | |
478 | pollfd = &g_array_index(session->pollfds, GPollFD, i); | |
479 | fd = pollfd->fd; | |
480 | if (ret > 0) | |
481 | revents = pollfd->revents; | |
482 | } | |
483 | if (ret > 0 && revents == 0) | |
484 | continue; /* skip timeouts if any I/O event occurred */ | |
485 | ||
62d7945f DE |
486 | due = source->due; |
487 | #ifdef HAVE_LIBUSB_1_0 | |
488 | if (source->is_usb && usb_due < due) | |
489 | due = usb_due; | |
490 | #endif | |
491 | if (revents == 0 && stop_time < due) | |
492 | continue; | |
493 | /* | |
494 | * The source may be gone after the callback returns, | |
495 | * so access any data now that needs accessing. | |
496 | */ | |
faa5d7d9 DE |
497 | if (source->timeout >= 0) |
498 | source->due = stop_time + source->timeout; | |
499 | source->triggered = TRUE; | |
500 | triggered = TRUE; | |
62d7945f DE |
501 | /* |
502 | * Invoke the source's callback on an event or timeout. | |
503 | */ | |
faa5d7d9 DE |
504 | if (!source->cb(fd, revents, source->cb_data)) |
505 | _sr_session_source_remove(session, poll_object); | |
62d7945f DE |
506 | /* |
507 | * We want to take as little time as possible to stop | |
508 | * the session if we have been told to do so. Therefore, | |
509 | * we check the flag after processing every source, not | |
510 | * just once per main event loop. | |
511 | */ | |
faa5d7d9 | 512 | if (!stopped) |
62d7945f | 513 | stopped = sr_session_check_aborted(session); |
faa5d7d9 | 514 | |
62d7945f DE |
515 | /* Restart loop as the sources list may have changed. */ |
516 | i = 0; | |
544a4582 | 517 | } |
faa5d7d9 DE |
518 | |
519 | /* Check for abort at least once per iteration. */ | |
520 | if (!triggered) | |
32af282c | 521 | sr_session_check_aborted(session); |
e0508e67 UH |
522 | |
523 | return SR_OK; | |
544a4582 BV |
524 | } |
525 | ||
7b5e6d29 BV |
526 | static int verify_trigger(struct sr_trigger *trigger) |
527 | { | |
528 | struct sr_trigger_stage *stage; | |
529 | struct sr_trigger_match *match; | |
530 | GSList *l, *m; | |
531 | ||
532 | if (!trigger->stages) { | |
533 | sr_err("No trigger stages defined."); | |
534 | return SR_ERR; | |
535 | } | |
536 | ||
537 | sr_spew("Checking trigger:"); | |
538 | for (l = trigger->stages; l; l = l->next) { | |
539 | stage = l->data; | |
540 | if (!stage->matches) { | |
541 | sr_err("Stage %d has no matches defined.", stage->stage); | |
542 | return SR_ERR; | |
543 | } | |
544 | for (m = stage->matches; m; m = m->next) { | |
545 | match = m->data; | |
546 | if (!match->channel) { | |
547 | sr_err("Stage %d match has no channel.", stage->stage); | |
548 | return SR_ERR; | |
549 | } | |
550 | if (!match->match) { | |
551 | sr_err("Stage %d match is not defined.", stage->stage); | |
552 | return SR_ERR; | |
553 | } | |
554 | sr_spew("Stage %d match on channel %s, match %d", stage->stage, | |
555 | match->channel->name, match->match); | |
556 | } | |
557 | } | |
558 | ||
559 | return SR_OK; | |
560 | } | |
1beccaed | 561 | |
9f45fb3a UH |
562 | /** |
563 | * Start a session. | |
564 | * | |
7efe889e UH |
565 | * @param session The session to use. Must not be NULL. |
566 | * | |
04cb9157 | 567 | * @retval SR_OK Success. |
0812c40e | 568 | * @retval SR_ERR_ARG Invalid session passed. |
47117241 | 569 | * |
0812c40e | 570 | * @since 0.4.0 |
9f45fb3a | 571 | */ |
0812c40e | 572 | SR_API int sr_session_start(struct sr_session *session) |
7d658874 | 573 | { |
de4d3f99 | 574 | struct sr_dev_inst *sdi; |
013ec84b BV |
575 | struct sr_channel *ch; |
576 | GSList *l, *c; | |
577 | int enabled_channels, ret; | |
7d658874 | 578 | |
9f45fb3a | 579 | if (!session) { |
0812c40e ML |
580 | sr_err("%s: session was NULL", __func__); |
581 | return SR_ERR_ARG; | |
9f45fb3a UH |
582 | } |
583 | ||
bb7ef793 | 584 | if (!session->devs) { |
a421dc1d | 585 | sr_err("%s: session->devs was NULL; a session " |
9f45fb3a | 586 | "cannot be started without devices.", __func__); |
0812c40e | 587 | return SR_ERR_ARG; |
9f45fb3a UH |
588 | } |
589 | ||
7b5e6d29 BV |
590 | if (session->trigger && verify_trigger(session->trigger) != SR_OK) |
591 | return SR_ERR; | |
592 | ||
c7142604 | 593 | sr_info("Starting."); |
9f45fb3a | 594 | |
b7c3e849 | 595 | ret = SR_OK; |
bb7ef793 | 596 | for (l = session->devs; l; l = l->next) { |
de4d3f99 | 597 | sdi = l->data; |
013ec84b BV |
598 | enabled_channels = 0; |
599 | for (c = sdi->channels; c; c = c->next) { | |
600 | ch = c->data; | |
601 | if (ch->enabled) { | |
602 | enabled_channels++; | |
603 | break; | |
604 | } | |
605 | } | |
606 | if (enabled_channels == 0) { | |
607 | ret = SR_ERR; | |
1b9e567b SA |
608 | sr_err("%s using connection %s has no enabled channels!", |
609 | sdi->driver->name, sdi->connection_id); | |
013ec84b BV |
610 | break; |
611 | } | |
612 | ||
32b7cd4f DE |
613 | if ((ret = sr_config_commit(sdi)) != SR_OK) { |
614 | sr_err("Failed to commit device settings before " | |
615 | "starting acquisition (%s)", sr_strerror(ret)); | |
616 | break; | |
617 | } | |
de4d3f99 | 618 | if ((ret = sdi->driver->dev_acquisition_start(sdi, sdi)) != SR_OK) { |
a421dc1d | 619 | sr_err("%s: could not start an acquisition " |
568dcacc | 620 | "(%s)", __func__, sr_strerror(ret)); |
7d658874 | 621 | break; |
9f45fb3a | 622 | } |
7d658874 BV |
623 | } |
624 | ||
9f45fb3a UH |
625 | /* TODO: What if there are multiple devices? Which return code? */ |
626 | ||
7d658874 BV |
627 | return ret; |
628 | } | |
629 | ||
9f45fb3a | 630 | /** |
0812c40e | 631 | * Run a session. |
9f45fb3a | 632 | * |
7efe889e UH |
633 | * @param session The session to use. Must not be NULL. |
634 | * | |
04cb9157 | 635 | * @retval SR_OK Success. |
0812c40e | 636 | * @retval SR_ERR_ARG Invalid session passed. |
faa5d7d9 | 637 | * @retval SR_ERR Error during event processing. |
47117241 | 638 | * |
0812c40e | 639 | * @since 0.4.0 |
9f45fb3a | 640 | */ |
0812c40e | 641 | SR_API int sr_session_run(struct sr_session *session) |
7d658874 | 642 | { |
faa5d7d9 DE |
643 | int ret; |
644 | ||
9f45fb3a | 645 | if (!session) { |
0812c40e ML |
646 | sr_err("%s: session was NULL", __func__); |
647 | return SR_ERR_ARG; | |
9f45fb3a UH |
648 | } |
649 | ||
bb7ef793 | 650 | if (!session->devs) { |
9f45fb3a | 651 | /* TODO: Actually the case? */ |
a421dc1d | 652 | sr_err("%s: session->devs was NULL; a session " |
9f45fb3a | 653 | "cannot be run without devices.", __func__); |
0812c40e | 654 | return SR_ERR_ARG; |
9f45fb3a | 655 | } |
5451816f | 656 | session->running = TRUE; |
9f45fb3a | 657 | |
a421dc1d | 658 | sr_info("Running."); |
7d658874 | 659 | |
faa5d7d9 DE |
660 | /* Poll event sources until none are left. */ |
661 | while (session->sources->len > 0) { | |
662 | ret = sr_session_iteration(session); | |
663 | if (ret != SR_OK) | |
664 | return ret; | |
9f45fb3a | 665 | } |
e0508e67 | 666 | return SR_OK; |
7d658874 BV |
667 | } |
668 | ||
9f45fb3a | 669 | /** |
0812c40e | 670 | * Stop a session. |
9f45fb3a | 671 | * |
0812c40e ML |
672 | * The session is stopped immediately, with all acquisition sessions stopped |
673 | * and hardware drivers cleaned up. | |
9f45fb3a | 674 | * |
33c6e4c5 AG |
675 | * This must be called from within the session thread, to prevent freeing |
676 | * resources that the session thread will try to use. | |
677 | * | |
7efe889e UH |
678 | * @param session The session to use. Must not be NULL. |
679 | * | |
04cb9157 | 680 | * @retval SR_OK Success. |
0812c40e | 681 | * @retval SR_ERR_ARG Invalid session passed. |
72a08bcc BV |
682 | * |
683 | * @private | |
9f45fb3a | 684 | */ |
0812c40e | 685 | SR_PRIV int sr_session_stop_sync(struct sr_session *session) |
a1bb33af | 686 | { |
de4d3f99 | 687 | struct sr_dev_inst *sdi; |
a1bb33af UH |
688 | GSList *l; |
689 | ||
9f45fb3a | 690 | if (!session) { |
a421dc1d | 691 | sr_err("%s: session was NULL", __func__); |
0812c40e | 692 | return SR_ERR_ARG; |
9f45fb3a UH |
693 | } |
694 | ||
a421dc1d | 695 | sr_info("Stopping."); |
e0508e67 | 696 | |
bb7ef793 | 697 | for (l = session->devs; l; l = l->next) { |
de4d3f99 BV |
698 | sdi = l->data; |
699 | if (sdi->driver) { | |
700 | if (sdi->driver->dev_acquisition_stop) | |
701 | sdi->driver->dev_acquisition_stop(sdi, sdi); | |
8c76be53 | 702 | } |
a1bb33af | 703 | } |
5451816f | 704 | session->running = FALSE; |
9f45fb3a | 705 | |
e0508e67 | 706 | return SR_OK; |
a1bb33af UH |
707 | } |
708 | ||
33c6e4c5 | 709 | /** |
0812c40e | 710 | * Stop a session. |
33c6e4c5 | 711 | * |
0812c40e ML |
712 | * The session is stopped immediately, with all acquisition sessions being |
713 | * stopped and hardware drivers cleaned up. | |
33c6e4c5 AG |
714 | * |
715 | * If the session is run in a separate thread, this function will not block | |
716 | * until the session is finished executing. It is the caller's responsibility | |
717 | * to wait for the session thread to return before assuming that the session is | |
718 | * completely decommissioned. | |
719 | * | |
7efe889e UH |
720 | * @param session The session to use. Must not be NULL. |
721 | * | |
04cb9157 | 722 | * @retval SR_OK Success. |
0812c40e | 723 | * @retval SR_ERR_ARG Invalid session passed. |
47117241 | 724 | * |
0812c40e | 725 | * @since 0.4.0 |
33c6e4c5 | 726 | */ |
0812c40e | 727 | SR_API int sr_session_stop(struct sr_session *session) |
33c6e4c5 AG |
728 | { |
729 | if (!session) { | |
730 | sr_err("%s: session was NULL", __func__); | |
731 | return SR_ERR_BUG; | |
732 | } | |
733 | ||
734 | g_mutex_lock(&session->stop_mutex); | |
735 | session->abort_session = TRUE; | |
736 | g_mutex_unlock(&session->stop_mutex); | |
737 | ||
738 | return SR_OK; | |
739 | } | |
740 | ||
9f45fb3a | 741 | /** |
a1645fcd | 742 | * Debug helper. |
9f45fb3a | 743 | * |
996b0c72 | 744 | * @param packet The packet to show debugging information for. |
9f45fb3a | 745 | */ |
bf53457d | 746 | static void datafeed_dump(const struct sr_datafeed_packet *packet) |
7d2afd6c | 747 | { |
bf53457d JH |
748 | const struct sr_datafeed_logic *logic; |
749 | const struct sr_datafeed_analog *analog; | |
1954dfa9 | 750 | const struct sr_datafeed_analog2 *analog2; |
7d2afd6c | 751 | |
ca7dbb56 | 752 | /* Please use the same order as in libsigrok.h. */ |
7d2afd6c BV |
753 | switch (packet->type) { |
754 | case SR_DF_HEADER: | |
a421dc1d | 755 | sr_dbg("bus: Received SR_DF_HEADER packet."); |
7d2afd6c | 756 | break; |
55c9f09d UH |
757 | case SR_DF_END: |
758 | sr_dbg("bus: Received SR_DF_END packet."); | |
7d2afd6c | 759 | break; |
c71bac3b | 760 | case SR_DF_META: |
a421dc1d | 761 | sr_dbg("bus: Received SR_DF_META packet."); |
ee7489d2 | 762 | break; |
55c9f09d UH |
763 | case SR_DF_TRIGGER: |
764 | sr_dbg("bus: Received SR_DF_TRIGGER packet."); | |
765 | break; | |
7d2afd6c BV |
766 | case SR_DF_LOGIC: |
767 | logic = packet->payload; | |
7ea45862 UH |
768 | sr_dbg("bus: Received SR_DF_LOGIC packet (%" PRIu64 " bytes, " |
769 | "unitsize = %d).", logic->length, logic->unitsize); | |
7d2afd6c | 770 | break; |
ee7489d2 BV |
771 | case SR_DF_ANALOG: |
772 | analog = packet->payload; | |
a421dc1d UH |
773 | sr_dbg("bus: Received SR_DF_ANALOG packet (%d samples).", |
774 | analog->num_samples); | |
ee7489d2 | 775 | break; |
6ea7669c | 776 | case SR_DF_FRAME_BEGIN: |
a421dc1d | 777 | sr_dbg("bus: Received SR_DF_FRAME_BEGIN packet."); |
6ea7669c BV |
778 | break; |
779 | case SR_DF_FRAME_END: | |
a421dc1d | 780 | sr_dbg("bus: Received SR_DF_FRAME_END packet."); |
6ea7669c | 781 | break; |
55c9f09d UH |
782 | case SR_DF_ANALOG2: |
783 | analog2 = packet->payload; | |
784 | sr_dbg("bus: Received SR_DF_ANALOG2 packet (%d samples).", | |
785 | analog2->num_samples); | |
786 | break; | |
7d2afd6c | 787 | default: |
a421dc1d | 788 | sr_dbg("bus: Received unknown packet type: %d.", packet->type); |
9f45fb3a | 789 | break; |
7d2afd6c | 790 | } |
7d2afd6c BV |
791 | } |
792 | ||
9f45fb3a | 793 | /** |
a1645fcd BV |
794 | * Send a packet to whatever is listening on the datafeed bus. |
795 | * | |
796 | * Hardware drivers use this to send a data packet to the frontend. | |
9f45fb3a | 797 | * |
6b2d8d3e | 798 | * @param sdi TODO. |
31ccebc4 | 799 | * @param packet The datafeed packet to send to the session bus. |
44dae539 | 800 | * |
04cb9157 MH |
801 | * @retval SR_OK Success. |
802 | * @retval SR_ERR_ARG Invalid argument. | |
b4bd7088 UH |
803 | * |
804 | * @private | |
9f45fb3a | 805 | */ |
de4d3f99 | 806 | SR_PRIV int sr_session_send(const struct sr_dev_inst *sdi, |
8143cfdc | 807 | const struct sr_datafeed_packet *packet) |
a1bb33af UH |
808 | { |
809 | GSList *l; | |
2726474a | 810 | struct datafeed_callback *cb_struct; |
c0a1e532 UH |
811 | struct sr_datafeed_packet *packet_in, *packet_out; |
812 | struct sr_transform *t; | |
813 | int ret; | |
a1bb33af | 814 | |
de4d3f99 | 815 | if (!sdi) { |
a421dc1d | 816 | sr_err("%s: sdi was NULL", __func__); |
e0508e67 | 817 | return SR_ERR_ARG; |
9f45fb3a UH |
818 | } |
819 | ||
e0508e67 | 820 | if (!packet) { |
a421dc1d | 821 | sr_err("%s: packet was NULL", __func__); |
e0508e67 | 822 | return SR_ERR_ARG; |
9f45fb3a UH |
823 | } |
824 | ||
79f92686 BV |
825 | if (!sdi->session) { |
826 | sr_err("%s: session was NULL", __func__); | |
827 | return SR_ERR_BUG; | |
828 | } | |
829 | ||
c0a1e532 UH |
830 | /* |
831 | * Pass the packet to the first transform module. If that returns | |
832 | * another packet (instead of NULL), pass that packet to the next | |
833 | * transform module in the list, and so on. | |
834 | */ | |
835 | packet_in = (struct sr_datafeed_packet *)packet; | |
836 | for (l = sdi->session->transforms; l; l = l->next) { | |
837 | t = l->data; | |
838 | sr_spew("Running transform module '%s'.", t->module->id); | |
839 | ret = t->module->receive(t, packet_in, &packet_out); | |
840 | if (ret < 0) { | |
841 | sr_err("Error while running transform module: %d.", ret); | |
842 | return SR_ERR; | |
843 | } | |
844 | if (!packet_out) { | |
845 | /* | |
846 | * If any of the transforms don't return an output | |
847 | * packet, abort. | |
848 | */ | |
849 | sr_spew("Transform module didn't return a packet, aborting."); | |
850 | return SR_OK; | |
851 | } else { | |
852 | /* | |
853 | * Use this transform module's output packet as input | |
854 | * for the next transform module. | |
855 | */ | |
856 | packet_in = packet_out; | |
857 | } | |
858 | } | |
4ec436c4 | 859 | packet = packet_in; |
c0a1e532 UH |
860 | |
861 | /* | |
862 | * If the last transform did output a packet, pass it to all datafeed | |
863 | * callbacks. | |
864 | */ | |
3337e9a1 | 865 | for (l = sdi->session->datafeed_callbacks; l; l = l->next) { |
18beaeff BV |
866 | if (sr_log_loglevel_get() >= SR_LOG_DBG) |
867 | datafeed_dump(packet); | |
2726474a ML |
868 | cb_struct = l->data; |
869 | cb_struct->cb(sdi, packet, cb_struct->cb_data); | |
a1bb33af | 870 | } |
9f45fb3a | 871 | |
e0508e67 | 872 | return SR_OK; |
a1bb33af UH |
873 | } |
874 | ||
6b2d8d3e UH |
875 | /** |
876 | * Add an event source for a file descriptor. | |
877 | * | |
7efe889e | 878 | * @param session The session to use. Must not be NULL. |
6b2d8d3e | 879 | * @param pollfd The GPollFD. |
faa5d7d9 DE |
880 | * @param[in] timeout Max time in ms to wait before the callback is called, |
881 | * or -1 to wait indefinitely. | |
6b2d8d3e UH |
882 | * @param cb Callback function to add. Must not be NULL. |
883 | * @param cb_data Data for the callback function. Can be NULL. | |
62d7945f DE |
884 | * @param poll_object Handle by which the source is identified |
885 | * @param is_usb TRUE for a libusb polling source | |
6b2d8d3e | 886 | * |
04cb9157 MH |
887 | * @retval SR_OK Success. |
888 | * @retval SR_ERR_ARG Invalid argument. | |
6b2d8d3e | 889 | */ |
62d7945f DE |
890 | SR_PRIV int sr_session_source_add_internal(struct sr_session *session, |
891 | GPollFD *pollfd, int timeout, sr_receive_data_callback cb, | |
892 | void *cb_data, gintptr poll_object, gboolean is_usb) | |
544a4582 | 893 | { |
faa5d7d9 | 894 | struct source src; |
544a4582 | 895 | |
d08490aa | 896 | if (!cb) { |
a421dc1d | 897 | sr_err("%s: cb was NULL", __func__); |
e0508e67 | 898 | return SR_ERR_ARG; |
9f45fb3a | 899 | } |
1f9813eb | 900 | /* Note: cb_data can be NULL, that's not a bug. */ |
9f45fb3a | 901 | |
faa5d7d9 DE |
902 | src.cb = cb; |
903 | src.cb_data = cb_data; | |
904 | src.poll_object = poll_object; | |
905 | src.is_usb = is_usb; | |
906 | src.triggered = FALSE; | |
544a4582 | 907 | |
faa5d7d9 DE |
908 | if (timeout >= 0) { |
909 | src.timeout = INT64_C(1000) * timeout; | |
910 | src.due = g_get_monotonic_time() + src.timeout; | |
911 | } else { | |
912 | src.timeout = -1; | |
913 | src.due = INT64_MAX; | |
914 | } | |
915 | ||
916 | if (pollfd) { | |
917 | /* I/O source */ | |
918 | g_array_insert_val(session->sources, session->pollfds->len, src); | |
919 | g_array_append_vals(session->pollfds, pollfd, 1); | |
920 | } else { | |
921 | /* Timer source */ | |
922 | g_array_append_val(session->sources, src); | |
923 | } | |
544a4582 | 924 | |
e0508e67 | 925 | return SR_OK; |
544a4582 BV |
926 | } |
927 | ||
9f45fb3a | 928 | /** |
6b2d8d3e | 929 | * Add an event source for a file descriptor. |
9f45fb3a | 930 | * |
7efe889e | 931 | * @param session The session to use. Must not be NULL. |
aac0ea25 LPC |
932 | * @param fd The file descriptor. |
933 | * @param events Events to check for. | |
faa5d7d9 DE |
934 | * @param timeout Max time in ms to wait before the callback is called, |
935 | * or -1 to wait indefinitely. | |
aac0ea25 LPC |
936 | * @param cb Callback function to add. Must not be NULL. |
937 | * @param cb_data Data for the callback function. Can be NULL. | |
9f45fb3a | 938 | * |
04cb9157 MH |
939 | * @retval SR_OK Success. |
940 | * @retval SR_ERR_ARG Invalid argument. | |
47117241 UH |
941 | * |
942 | * @since 0.3.0 | |
aac0ea25 | 943 | */ |
0812c40e ML |
944 | SR_API int sr_session_source_add(struct sr_session *session, int fd, |
945 | int events, int timeout, sr_receive_data_callback cb, void *cb_data) | |
aac0ea25 LPC |
946 | { |
947 | GPollFD p; | |
948 | ||
faa5d7d9 DE |
949 | if (fd < 0 && timeout < 0) { |
950 | sr_err("Timer source without timeout would block indefinitely"); | |
951 | return SR_ERR_ARG; | |
952 | } | |
aac0ea25 LPC |
953 | p.fd = fd; |
954 | p.events = events; | |
89efe064 | 955 | p.revents = 0; |
aac0ea25 | 956 | |
faa5d7d9 DE |
957 | return sr_session_source_add_internal(session, |
958 | (fd < 0) ? NULL : &p, timeout, cb, cb_data, fd, FALSE); | |
aac0ea25 LPC |
959 | } |
960 | ||
961 | /** | |
1a895c61 | 962 | * Add an event source for a GPollFD. |
aac0ea25 | 963 | * |
7efe889e | 964 | * @param session The session to use. Must not be NULL. |
faa5d7d9 DE |
965 | * @param pollfd The GPollFD. Must not be NULL. |
966 | * @param timeout Max time in ms to wait before the callback is called, | |
967 | * or -1 to wait indefinitely. | |
aac0ea25 LPC |
968 | * @param cb Callback function to add. Must not be NULL. |
969 | * @param cb_data Data for the callback function. Can be NULL. | |
44dae539 | 970 | * |
04cb9157 MH |
971 | * @retval SR_OK Success. |
972 | * @retval SR_ERR_ARG Invalid argument. | |
47117241 UH |
973 | * |
974 | * @since 0.3.0 | |
9f45fb3a | 975 | */ |
0812c40e ML |
976 | SR_API int sr_session_source_add_pollfd(struct sr_session *session, |
977 | GPollFD *pollfd, int timeout, sr_receive_data_callback cb, | |
978 | void *cb_data) | |
aac0ea25 | 979 | { |
faa5d7d9 DE |
980 | if (!pollfd) { |
981 | sr_err("%s: pollfd was NULL", __func__); | |
982 | return SR_ERR_ARG; | |
983 | } | |
62d7945f DE |
984 | return sr_session_source_add_internal(session, pollfd, timeout, |
985 | cb, cb_data, (gintptr)pollfd, FALSE); | |
aac0ea25 LPC |
986 | } |
987 | ||
988 | /** | |
1a895c61 | 989 | * Add an event source for a GIOChannel. |
aac0ea25 | 990 | * |
7efe889e | 991 | * @param session The session to use. Must not be NULL. |
aac0ea25 LPC |
992 | * @param channel The GIOChannel. |
993 | * @param events Events to poll on. | |
faa5d7d9 DE |
994 | * @param timeout Max time in ms to wait before the callback is called, |
995 | * or -1 to wait indefinitely. | |
aac0ea25 LPC |
996 | * @param cb Callback function to add. Must not be NULL. |
997 | * @param cb_data Data for the callback function. Can be NULL. | |
998 | * | |
04cb9157 MH |
999 | * @retval SR_OK Success. |
1000 | * @retval SR_ERR_ARG Invalid argument. | |
47117241 UH |
1001 | * |
1002 | * @since 0.3.0 | |
aac0ea25 | 1003 | */ |
0812c40e ML |
1004 | SR_API int sr_session_source_add_channel(struct sr_session *session, |
1005 | GIOChannel *channel, int events, int timeout, | |
1006 | sr_receive_data_callback cb, void *cb_data) | |
aac0ea25 LPC |
1007 | { |
1008 | GPollFD p; | |
1009 | ||
faa5d7d9 | 1010 | #ifdef G_OS_WIN32 |
6b2d8d3e | 1011 | g_io_channel_win32_make_pollfd(channel, events, &p); |
aac0ea25 LPC |
1012 | #else |
1013 | p.fd = g_io_channel_unix_get_fd(channel); | |
1014 | p.events = events; | |
89efe064 | 1015 | p.revents = 0; |
aac0ea25 | 1016 | #endif |
62d7945f DE |
1017 | return sr_session_source_add_internal(session, &p, timeout, cb, |
1018 | cb_data, (gintptr)channel, FALSE); | |
aac0ea25 LPC |
1019 | } |
1020 | ||
6b2d8d3e UH |
1021 | /** |
1022 | * Remove the source belonging to the specified channel. | |
1023 | * | |
7efe889e | 1024 | * @param session The session to use. Must not be NULL. |
04cb9157 | 1025 | * @param poll_object The channel for which the source should be removed. |
6b2d8d3e | 1026 | * |
04cb9157 MH |
1027 | * @retval SR_OK Success |
1028 | * @retval SR_ERR_ARG Invalid arguments | |
04cb9157 | 1029 | * @retval SR_ERR_BUG Internal error |
6b2d8d3e | 1030 | */ |
102f1239 | 1031 | static int _sr_session_source_remove(struct sr_session *session, gintptr poll_object) |
544a4582 | 1032 | { |
faa5d7d9 | 1033 | unsigned int i; |
544a4582 | 1034 | |
faa5d7d9 DE |
1035 | for (i = 0; i < session->sources->len; ++i) { |
1036 | if (g_array_index(session->sources, struct source, i) | |
1037 | .poll_object == poll_object) { | |
e0508e67 | 1038 | |
faa5d7d9 DE |
1039 | g_array_remove_index(session->sources, i); |
1040 | if (i < session->pollfds->len) | |
1041 | g_array_remove_index(session->pollfds, i); | |
2bccd322 | 1042 | break; |
faa5d7d9 | 1043 | } |
9f45fb3a | 1044 | } |
e0508e67 | 1045 | return SR_OK; |
544a4582 | 1046 | } |
aac0ea25 | 1047 | |
6b2d8d3e | 1048 | /** |
aac0ea25 LPC |
1049 | * Remove the source belonging to the specified file descriptor. |
1050 | * | |
7efe889e | 1051 | * @param session The session to use. Must not be NULL. |
1a895c61 | 1052 | * @param fd The file descriptor for which the source should be removed. |
aac0ea25 | 1053 | * |
04cb9157 MH |
1054 | * @retval SR_OK Success |
1055 | * @retval SR_ERR_ARG Invalid argument | |
04cb9157 | 1056 | * @retval SR_ERR_BUG Internal error. |
47117241 UH |
1057 | * |
1058 | * @since 0.3.0 | |
aac0ea25 | 1059 | */ |
0812c40e | 1060 | SR_API int sr_session_source_remove(struct sr_session *session, int fd) |
aac0ea25 | 1061 | { |
faa5d7d9 | 1062 | return _sr_session_source_remove(session, fd); |
aac0ea25 LPC |
1063 | } |
1064 | ||
1065 | /** | |
1066 | * Remove the source belonging to the specified poll descriptor. | |
1067 | * | |
7efe889e | 1068 | * @param session The session to use. Must not be NULL. |
aac0ea25 | 1069 | * @param pollfd The poll descriptor for which the source should be removed. |
faa5d7d9 | 1070 | * Must not be NULL. |
aac0ea25 LPC |
1071 | * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments, or |
1072 | * SR_ERR_MALLOC upon memory allocation errors, SR_ERR_BUG upon | |
1073 | * internal errors. | |
47117241 UH |
1074 | * |
1075 | * @since 0.2.0 | |
aac0ea25 | 1076 | */ |
0812c40e ML |
1077 | SR_API int sr_session_source_remove_pollfd(struct sr_session *session, |
1078 | GPollFD *pollfd) | |
aac0ea25 | 1079 | { |
faa5d7d9 DE |
1080 | if (!pollfd) { |
1081 | sr_err("%s: pollfd was NULL", __func__); | |
1082 | return SR_ERR_ARG; | |
1083 | } | |
102f1239 | 1084 | return _sr_session_source_remove(session, (gintptr)pollfd); |
aac0ea25 LPC |
1085 | } |
1086 | ||
6b2d8d3e | 1087 | /** |
aac0ea25 LPC |
1088 | * Remove the source belonging to the specified channel. |
1089 | * | |
7efe889e | 1090 | * @param session The session to use. Must not be NULL. |
1a895c61 | 1091 | * @param channel The channel for which the source should be removed. |
faa5d7d9 | 1092 | * Must not be NULL. |
04cb9157 MH |
1093 | * @retval SR_OK Success. |
1094 | * @retval SR_ERR_ARG Invalid argument. | |
04cb9157 | 1095 | * @return SR_ERR_BUG Internal error. |
47117241 UH |
1096 | * |
1097 | * @since 0.2.0 | |
aac0ea25 | 1098 | */ |
0812c40e ML |
1099 | SR_API int sr_session_source_remove_channel(struct sr_session *session, |
1100 | GIOChannel *channel) | |
aac0ea25 | 1101 | { |
faa5d7d9 DE |
1102 | if (!channel) { |
1103 | sr_err("%s: channel was NULL", __func__); | |
1104 | return SR_ERR_ARG; | |
1105 | } | |
102f1239 | 1106 | return _sr_session_source_remove(session, (gintptr)channel); |
aac0ea25 | 1107 | } |
7b870c38 | 1108 | |
ee29d92e | 1109 | static void copy_src(struct sr_config *src, struct sr_datafeed_meta *meta_copy) |
8143cfdc | 1110 | { |
8143cfdc | 1111 | g_variant_ref(src->data); |
ee29d92e AJ |
1112 | meta_copy->config = g_slist_append(meta_copy->config, |
1113 | g_memdup(src, sizeof(struct sr_config))); | |
8143cfdc BV |
1114 | } |
1115 | ||
1116 | SR_PRIV int sr_packet_copy(const struct sr_datafeed_packet *packet, | |
1117 | struct sr_datafeed_packet **copy) | |
1118 | { | |
1119 | const struct sr_datafeed_meta *meta; | |
1120 | struct sr_datafeed_meta *meta_copy; | |
1121 | const struct sr_datafeed_logic *logic; | |
1122 | struct sr_datafeed_logic *logic_copy; | |
1123 | const struct sr_datafeed_analog *analog; | |
1124 | struct sr_datafeed_analog *analog_copy; | |
1125 | uint8_t *payload; | |
1126 | ||
1127 | *copy = g_malloc0(sizeof(struct sr_datafeed_packet)); | |
1128 | (*copy)->type = packet->type; | |
1129 | ||
1130 | switch (packet->type) { | |
1131 | case SR_DF_TRIGGER: | |
1132 | case SR_DF_END: | |
1133 | /* No payload. */ | |
1134 | break; | |
1135 | case SR_DF_HEADER: | |
1136 | payload = g_malloc(sizeof(struct sr_datafeed_header)); | |
1137 | memcpy(payload, packet->payload, sizeof(struct sr_datafeed_header)); | |
1138 | (*copy)->payload = payload; | |
1139 | break; | |
1140 | case SR_DF_META: | |
1141 | meta = packet->payload; | |
ee29d92e AJ |
1142 | meta_copy = g_malloc0(sizeof(struct sr_datafeed_meta)); |
1143 | g_slist_foreach(meta->config, (GFunc)copy_src, meta_copy->config); | |
8143cfdc BV |
1144 | (*copy)->payload = meta_copy; |
1145 | break; | |
1146 | case SR_DF_LOGIC: | |
1147 | logic = packet->payload; | |
1148 | logic_copy = g_malloc(sizeof(logic)); | |
1149 | logic_copy->length = logic->length; | |
1150 | logic_copy->unitsize = logic->unitsize; | |
1151 | memcpy(logic_copy->data, logic->data, logic->length * logic->unitsize); | |
1152 | (*copy)->payload = logic_copy; | |
1153 | break; | |
1154 | case SR_DF_ANALOG: | |
1155 | analog = packet->payload; | |
1156 | analog_copy = g_malloc(sizeof(analog)); | |
1157 | analog_copy->channels = g_slist_copy(analog->channels); | |
1158 | analog_copy->num_samples = analog->num_samples; | |
1159 | analog_copy->mq = analog->mq; | |
1160 | analog_copy->unit = analog->unit; | |
1161 | analog_copy->mqflags = analog->mqflags; | |
1162 | memcpy(analog_copy->data, analog->data, | |
1163 | analog->num_samples * sizeof(float)); | |
1164 | (*copy)->payload = analog_copy; | |
1165 | break; | |
1166 | default: | |
1167 | sr_err("Unknown packet type %d", packet->type); | |
1168 | return SR_ERR; | |
1169 | } | |
1170 | ||
1171 | return SR_OK; | |
1172 | } | |
1173 | ||
1174 | void sr_packet_free(struct sr_datafeed_packet *packet) | |
1175 | { | |
1176 | const struct sr_datafeed_meta *meta; | |
1177 | const struct sr_datafeed_logic *logic; | |
1178 | const struct sr_datafeed_analog *analog; | |
1179 | struct sr_config *src; | |
1180 | GSList *l; | |
1181 | ||
1182 | switch (packet->type) { | |
1183 | case SR_DF_TRIGGER: | |
1184 | case SR_DF_END: | |
1185 | /* No payload. */ | |
1186 | break; | |
1187 | case SR_DF_HEADER: | |
1188 | /* Payload is a simple struct. */ | |
1189 | g_free((void *)packet->payload); | |
1190 | break; | |
1191 | case SR_DF_META: | |
1192 | meta = packet->payload; | |
1193 | for (l = meta->config; l; l = l->next) { | |
1194 | src = l->data; | |
1195 | g_variant_unref(src->data); | |
1196 | g_free(src); | |
1197 | } | |
1198 | g_slist_free(meta->config); | |
1199 | g_free((void *)packet->payload); | |
1200 | break; | |
1201 | case SR_DF_LOGIC: | |
1202 | logic = packet->payload; | |
1203 | g_free(logic->data); | |
1204 | g_free((void *)packet->payload); | |
1205 | break; | |
1206 | case SR_DF_ANALOG: | |
1207 | analog = packet->payload; | |
1208 | g_slist_free(analog->channels); | |
1209 | g_free(analog->data); | |
1210 | g_free((void *)packet->payload); | |
1211 | break; | |
1212 | default: | |
1213 | sr_err("Unknown packet type %d", packet->type); | |
1214 | } | |
1215 | g_free(packet); | |
1216 | ||
1217 | } | |
1218 | ||
7b870c38 | 1219 | /** @} */ |