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Commit | Line | Data |
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a1bb33af UH |
1 | /* |
2 | * This file is part of the sigrok project. | |
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 | ||
20 | #include <stdio.h> | |
21 | #include <stdlib.h> | |
22 | #include <unistd.h> | |
23 | #include <string.h> | |
544a4582 | 24 | #include <glib.h> |
b7f09cf8 UH |
25 | #include "sigrok.h" |
26 | #include "sigrok-internal.h" | |
aa4b1107 | 27 | |
3d2efd7d UH |
28 | /* demo.c. TODO: Should not be global! */ |
29 | extern SR_PRIV GIOChannel channels[2]; | |
a1bb33af | 30 | |
544a4582 BV |
31 | struct source { |
32 | int fd; | |
33 | int events; | |
34 | int timeout; | |
a887e3da | 35 | sr_receive_data_callback cb; |
544a4582 BV |
36 | void *user_data; |
37 | }; | |
38 | ||
7d658874 | 39 | /* There can only be one session at a time. */ |
a0ecd83b | 40 | /* 'session' is not static, it's used elsewhere (via 'extern'). */ |
2872d21e | 41 | struct sr_session *session; |
a0ecd83b | 42 | static int num_sources = 0; |
544a4582 | 43 | |
a0ecd83b UH |
44 | static struct source *sources = NULL; |
45 | static int source_timeout = -1; | |
544a4582 | 46 | |
9f45fb3a UH |
47 | /** |
48 | * Create a new session. | |
49 | * | |
9f45fb3a UH |
50 | * TODO: Should it use the file-global "session" variable or take an argument? |
51 | * The same question applies to all the other session functions. | |
52 | * | |
53 | * @return A pointer to the newly allocated session, or NULL upon errors. | |
54 | */ | |
1a081ca6 | 55 | SR_API struct sr_session *sr_session_new(void) |
a1bb33af | 56 | { |
133a37bf | 57 | if (!(session = g_try_malloc0(sizeof(struct sr_session)))) { |
9f45fb3a UH |
58 | sr_err("session: %s: session malloc failed", __func__); |
59 | return NULL; /* TODO: SR_ERR_MALLOC? */ | |
60 | } | |
a1bb33af UH |
61 | |
62 | return session; | |
63 | } | |
64 | ||
9f45fb3a UH |
65 | /** |
66 | * Destroy the current session. | |
67 | * | |
68 | * This frees up all memory used by the session. | |
69 | * | |
e0508e67 | 70 | * @return SR_OK upon success, SR_ERR_BUG if no session exists. |
9f45fb3a | 71 | */ |
1a081ca6 | 72 | SR_API int sr_session_destroy(void) |
a1bb33af | 73 | { |
9f45fb3a | 74 | if (!session) { |
133a37bf | 75 | sr_err("session: %s: session was NULL", __func__); |
e0508e67 | 76 | return SR_ERR_BUG; |
9f45fb3a UH |
77 | } |
78 | ||
bb7ef793 UH |
79 | g_slist_free(session->devs); |
80 | session->devs = NULL; | |
a1bb33af | 81 | |
9f45fb3a UH |
82 | /* TODO: Error checks needed? */ |
83 | ||
aa4b1107 | 84 | /* TODO: Loop over protocol decoders and free them. */ |
a1bb33af UH |
85 | |
86 | g_free(session); | |
9f45fb3a | 87 | session = NULL; |
e0508e67 UH |
88 | |
89 | return SR_OK; | |
a1bb33af UH |
90 | } |
91 | ||
9f45fb3a UH |
92 | /** |
93 | * Remove all the devices from the current session. TODO? | |
94 | * | |
95 | * The session itself (i.e., the struct sr_session) is not free'd and still | |
96 | * exists after this function returns. | |
97 | * | |
e0508e67 | 98 | * @return SR_OK upon success, SR_ERR_BUG if no session exists. |
9f45fb3a | 99 | */ |
bb7ef793 | 100 | SR_API int sr_session_dev_clear(void) |
a1bb33af | 101 | { |
9f45fb3a | 102 | if (!session) { |
133a37bf | 103 | sr_err("session: %s: session was NULL", __func__); |
e0508e67 | 104 | return SR_ERR_BUG; |
9f45fb3a UH |
105 | } |
106 | ||
bb7ef793 UH |
107 | g_slist_free(session->devs); |
108 | session->devs = NULL; | |
e0508e67 UH |
109 | |
110 | return SR_OK; | |
a1bb33af UH |
111 | } |
112 | ||
9f45fb3a UH |
113 | /** |
114 | * Add a device to the current session. | |
115 | * | |
bb7ef793 | 116 | * @param dev The device to add to the current session. Must not be NULL. |
e7eb703f | 117 | * Also, dev->plugin and dev->plugin->dev_open must not be NULL. |
9f45fb3a UH |
118 | * |
119 | * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments. | |
120 | */ | |
bb7ef793 | 121 | SR_API int sr_session_dev_add(struct sr_dev *dev) |
a1bb33af UH |
122 | { |
123 | int ret; | |
124 | ||
bb7ef793 UH |
125 | if (!dev) { |
126 | sr_err("session: %s: dev was NULL", __func__); | |
9f45fb3a UH |
127 | return SR_ERR_ARG; |
128 | } | |
129 | ||
bb7ef793 UH |
130 | if (!dev->plugin) { |
131 | sr_err("session: %s: dev->plugin was NULL", __func__); | |
9f45fb3a UH |
132 | return SR_ERR_ARG; |
133 | } | |
134 | ||
e7eb703f UH |
135 | if (!dev->plugin->dev_open) { |
136 | sr_err("session: %s: dev->plugin->dev_open was NULL", | |
9f45fb3a UH |
137 | __func__); |
138 | return SR_ERR_ARG; | |
139 | } | |
140 | ||
141 | if (!session) { | |
142 | sr_err("session: %s: session was NULL", __func__); | |
143 | return SR_ERR; /* TODO: SR_ERR_BUG? */ | |
144 | } | |
145 | ||
e7eb703f UH |
146 | if ((ret = dev->plugin->dev_open(dev->plugin_index)) != SR_OK) { |
147 | sr_err("session: %s: dev_open failed (%d)", __func__, ret); | |
9f45fb3a | 148 | return ret; |
aa4b1107 | 149 | } |
a1bb33af | 150 | |
bb7ef793 | 151 | session->devs = g_slist_append(session->devs, dev); |
aa4b1107 | 152 | |
e46b8fb1 | 153 | return SR_OK; |
a1bb33af UH |
154 | } |
155 | ||
9f45fb3a UH |
156 | /** |
157 | * Clear all datafeed callbacks in the current session. | |
158 | * | |
e0508e67 | 159 | * @return SR_OK upon success, SR_ERR_BUG if no session exists. |
9f45fb3a | 160 | */ |
1a081ca6 | 161 | SR_API int sr_session_datafeed_callback_clear(void) |
a1bb33af | 162 | { |
9f45fb3a UH |
163 | if (!session) { |
164 | sr_err("session: %s: session was NULL", __func__); | |
e0508e67 | 165 | return SR_ERR_BUG; |
9f45fb3a UH |
166 | } |
167 | ||
a1bb33af UH |
168 | g_slist_free(session->datafeed_callbacks); |
169 | session->datafeed_callbacks = NULL; | |
e0508e67 UH |
170 | |
171 | return SR_OK; | |
a1bb33af UH |
172 | } |
173 | ||
9f45fb3a UH |
174 | /** |
175 | * Add a datafeed callback to the current session. | |
176 | * | |
a1645fcd BV |
177 | * @param callback Function to call when a chunk of data is received. |
178 | * | |
e0508e67 | 179 | * @return SR_OK upon success, SR_ERR_BUG if no session exists. |
9f45fb3a | 180 | */ |
1a081ca6 | 181 | SR_API int sr_session_datafeed_callback_add(sr_datafeed_callback callback) |
a1bb33af | 182 | { |
9f45fb3a UH |
183 | if (!session) { |
184 | sr_err("session: %s: session was NULL", __func__); | |
e0508e67 | 185 | return SR_ERR_BUG; |
9f45fb3a UH |
186 | } |
187 | ||
188 | /* TODO: Is 'callback' allowed to be NULL? */ | |
189 | ||
62c82025 UH |
190 | session->datafeed_callbacks = |
191 | g_slist_append(session->datafeed_callbacks, callback); | |
e0508e67 UH |
192 | |
193 | return SR_OK; | |
a1bb33af UH |
194 | } |
195 | ||
9f45fb3a UH |
196 | /** |
197 | * TODO. | |
198 | */ | |
e0508e67 | 199 | static int sr_session_run_poll(void) |
544a4582 BV |
200 | { |
201 | GPollFD *fds, my_gpollfd; | |
202 | int ret, i; | |
203 | ||
544a4582 BV |
204 | fds = NULL; |
205 | while (session->running) { | |
133a37bf UH |
206 | /* TODO: Add comment. */ |
207 | g_free(fds); | |
544a4582 BV |
208 | |
209 | /* Construct g_poll()'s array. */ | |
133a37bf | 210 | if (!(fds = g_try_malloc(sizeof(GPollFD) * num_sources))) { |
e0508e67 UH |
211 | sr_err("session: %s: fds malloc failed", __func__); |
212 | return SR_ERR_MALLOC; | |
213 | } | |
544a4582 BV |
214 | for (i = 0; i < num_sources; i++) { |
215 | #ifdef _WIN32 | |
216 | g_io_channel_win32_make_pollfd(&channels[0], | |
217 | sources[i].events, &my_gpollfd); | |
218 | #else | |
219 | my_gpollfd.fd = sources[i].fd; | |
220 | my_gpollfd.events = sources[i].events; | |
221 | fds[i] = my_gpollfd; | |
222 | #endif | |
223 | } | |
224 | ||
225 | ret = g_poll(fds, num_sources, source_timeout); | |
226 | ||
227 | for (i = 0; i < num_sources; i++) { | |
228 | if (fds[i].revents > 0 || (ret == 0 | |
229 | && source_timeout == sources[i].timeout)) { | |
230 | /* | |
231 | * Invoke the source's callback on an event, | |
232 | * or if the poll timeout out and this source | |
233 | * asked for that timeout. | |
234 | */ | |
5c582d9f GM |
235 | if (!sources[i].cb(fds[i].fd, fds[i].revents, |
236 | sources[i].user_data)) | |
237 | sr_session_source_remove(sources[i].fd); | |
544a4582 BV |
238 | } |
239 | } | |
240 | } | |
133a37bf | 241 | g_free(fds); |
e0508e67 UH |
242 | |
243 | return SR_OK; | |
544a4582 BV |
244 | } |
245 | ||
9f45fb3a UH |
246 | /** |
247 | * Start a session. | |
248 | * | |
a1645fcd | 249 | * There can only be one session at a time. |
9f45fb3a UH |
250 | * |
251 | * @return SR_OK upon success, SR_ERR upon errors. | |
252 | */ | |
1a081ca6 | 253 | SR_API int sr_session_start(void) |
7d658874 | 254 | { |
bb7ef793 | 255 | struct sr_dev *dev; |
7d658874 BV |
256 | GSList *l; |
257 | int ret; | |
258 | ||
9f45fb3a UH |
259 | if (!session) { |
260 | sr_err("session: %s: session was NULL; a session must be " | |
261 | "created first, before starting it.", __func__); | |
262 | return SR_ERR; /* TODO: SR_ERR_BUG? */ | |
263 | } | |
264 | ||
bb7ef793 | 265 | if (!session->devs) { |
9f45fb3a | 266 | /* TODO: Actually the case? */ |
bb7ef793 | 267 | sr_err("session: %s: session->devs was NULL; a session " |
9f45fb3a UH |
268 | "cannot be started without devices.", __func__); |
269 | return SR_ERR; /* TODO: SR_ERR_BUG? */ | |
270 | } | |
271 | ||
272 | /* TODO: Check plugin_index validity? */ | |
273 | ||
b08024a8 | 274 | sr_info("session: starting"); |
9f45fb3a | 275 | |
bb7ef793 UH |
276 | for (l = session->devs; l; l = l->next) { |
277 | dev = l->data; | |
278 | /* TODO: Check for dev != NULL. */ | |
69040b7c | 279 | if ((ret = dev->plugin->dev_acquisition_start( |
bb7ef793 | 280 | dev->plugin_index, dev)) != SR_OK) { |
446a0372 | 281 | sr_err("session: %s: could not start an acquisition " |
9f45fb3a | 282 | "(%d)", __func__, ret); |
7d658874 | 283 | break; |
9f45fb3a | 284 | } |
7d658874 BV |
285 | } |
286 | ||
9f45fb3a UH |
287 | /* TODO: What if there are multiple devices? Which return code? */ |
288 | ||
7d658874 BV |
289 | return ret; |
290 | } | |
291 | ||
9f45fb3a UH |
292 | /** |
293 | * Run the session. | |
294 | * | |
9f45fb3a UH |
295 | * TODO: Various error checks etc. |
296 | * | |
e0508e67 | 297 | * @return SR_OK upon success, SR_ERR_BUG upon errors. |
9f45fb3a | 298 | */ |
1a081ca6 | 299 | SR_API int sr_session_run(void) |
7d658874 | 300 | { |
9f45fb3a UH |
301 | if (!session) { |
302 | sr_err("session: %s: session was NULL; a session must be " | |
303 | "created first, before running it.", __func__); | |
e0508e67 | 304 | return SR_ERR_BUG; |
9f45fb3a UH |
305 | } |
306 | ||
bb7ef793 | 307 | if (!session->devs) { |
9f45fb3a | 308 | /* TODO: Actually the case? */ |
bb7ef793 | 309 | sr_err("session: %s: session->devs was NULL; a session " |
9f45fb3a | 310 | "cannot be run without devices.", __func__); |
e0508e67 | 311 | return SR_ERR_BUG; |
9f45fb3a UH |
312 | } |
313 | ||
b08024a8 | 314 | sr_info("session: running"); |
7d658874 BV |
315 | session->running = TRUE; |
316 | ||
9f45fb3a UH |
317 | /* Do we have real sources? */ |
318 | if (num_sources == 1 && sources[0].fd == -1) { | |
319 | /* Dummy source, freewheel over it. */ | |
7d658874 BV |
320 | while (session->running) |
321 | sources[0].cb(-1, 0, sources[0].user_data); | |
9f45fb3a UH |
322 | } else { |
323 | /* Real sources, use g_poll() main loop. */ | |
8a2efef2 | 324 | sr_session_run_poll(); |
9f45fb3a UH |
325 | } |
326 | ||
e0508e67 | 327 | return SR_OK; |
7d658874 BV |
328 | } |
329 | ||
9f45fb3a UH |
330 | /** |
331 | * Halt the current session. | |
332 | * | |
44dae539 UH |
333 | * This requests the current session be stopped as soon as possible, for |
334 | * example on receiving an SR_DF_END packet. | |
e0508e67 UH |
335 | * |
336 | * @return SR_OK upon success, SR_ERR_BUG if no session exists. | |
9f45fb3a | 337 | */ |
1a081ca6 | 338 | SR_API int sr_session_halt(void) |
544a4582 | 339 | { |
9f45fb3a UH |
340 | if (!session) { |
341 | sr_err("session: %s: session was NULL", __func__); | |
e0508e67 | 342 | return SR_ERR_BUG; |
9f45fb3a UH |
343 | } |
344 | ||
b08024a8 | 345 | sr_info("session: halting"); |
544a4582 | 346 | session->running = FALSE; |
9f45fb3a | 347 | |
e0508e67 | 348 | return SR_OK; |
544a4582 BV |
349 | } |
350 | ||
9f45fb3a UH |
351 | /** |
352 | * Stop the current session. | |
353 | * | |
a1645fcd BV |
354 | * The current session is stopped immediately, with all acquisition sessions |
355 | * being stopped and hardware plugins cleaned up. | |
9f45fb3a | 356 | * |
e0508e67 | 357 | * @return SR_OK upon success, SR_ERR_BUG if no session exists. |
9f45fb3a | 358 | */ |
1a081ca6 | 359 | SR_API int sr_session_stop(void) |
a1bb33af | 360 | { |
bb7ef793 | 361 | struct sr_dev *dev; |
a1bb33af UH |
362 | GSList *l; |
363 | ||
9f45fb3a UH |
364 | if (!session) { |
365 | sr_err("session: %s: session was NULL", __func__); | |
e0508e67 | 366 | return SR_ERR_BUG; |
9f45fb3a UH |
367 | } |
368 | ||
b08024a8 | 369 | sr_info("session: stopping"); |
544a4582 | 370 | session->running = FALSE; |
e0508e67 | 371 | |
bb7ef793 UH |
372 | for (l = session->devs; l; l = l->next) { |
373 | dev = l->data; | |
374 | /* Check for dev != NULL. */ | |
375 | if (dev->plugin) { | |
69040b7c UH |
376 | if (dev->plugin->dev_acquisition_stop) |
377 | dev->plugin->dev_acquisition_stop(dev->plugin_index, dev); | |
bb7ef793 UH |
378 | if (dev->plugin->cleanup) |
379 | dev->plugin->cleanup(); | |
8c76be53 | 380 | } |
a1bb33af | 381 | } |
9f45fb3a | 382 | |
e0508e67 | 383 | return SR_OK; |
a1bb33af UH |
384 | } |
385 | ||
9f45fb3a | 386 | /** |
a1645fcd | 387 | * Debug helper. |
9f45fb3a | 388 | * |
996b0c72 | 389 | * @param packet The packet to show debugging information for. |
9f45fb3a | 390 | */ |
18beaeff | 391 | static void datafeed_dump(struct sr_datafeed_packet *packet) |
7d2afd6c BV |
392 | { |
393 | struct sr_datafeed_logic *logic; | |
394 | ||
395 | switch (packet->type) { | |
396 | case SR_DF_HEADER: | |
397 | sr_dbg("bus: received SR_DF_HEADER"); | |
398 | break; | |
399 | case SR_DF_TRIGGER: | |
01469707 | 400 | sr_dbg("bus: received SR_DF_TRIGGER"); |
7d2afd6c BV |
401 | break; |
402 | case SR_DF_LOGIC: | |
403 | logic = packet->payload; | |
e0508e67 | 404 | /* TODO: Check for logic != NULL. */ |
01469707 | 405 | sr_dbg("bus: received SR_DF_LOGIC %" PRIu64 " bytes", logic->length); |
7d2afd6c BV |
406 | break; |
407 | case SR_DF_END: | |
408 | sr_dbg("bus: received SR_DF_END"); | |
409 | break; | |
410 | default: | |
18beaeff | 411 | sr_dbg("bus: received unknown packet type %d", packet->type); |
9f45fb3a | 412 | break; |
7d2afd6c | 413 | } |
7d2afd6c BV |
414 | } |
415 | ||
9f45fb3a | 416 | /** |
a1645fcd BV |
417 | * Send a packet to whatever is listening on the datafeed bus. |
418 | * | |
419 | * Hardware drivers use this to send a data packet to the frontend. | |
9f45fb3a | 420 | * |
bb7ef793 | 421 | * @param dev TODO. |
9f45fb3a | 422 | * @param packet TODO. |
44dae539 | 423 | * |
e0508e67 | 424 | * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments. |
9f45fb3a | 425 | */ |
bb7ef793 | 426 | SR_PRIV int sr_session_bus(struct sr_dev *dev, |
7b48d6e1 | 427 | struct sr_datafeed_packet *packet) |
a1bb33af UH |
428 | { |
429 | GSList *l; | |
13b05733 | 430 | sr_datafeed_callback cb; |
a1bb33af | 431 | |
bb7ef793 UH |
432 | if (!dev) { |
433 | sr_err("session: %s: dev was NULL", __func__); | |
e0508e67 | 434 | return SR_ERR_ARG; |
9f45fb3a UH |
435 | } |
436 | ||
bb7ef793 UH |
437 | if (!dev->plugin) { |
438 | sr_err("session: %s: dev->plugin was NULL", __func__); | |
e0508e67 UH |
439 | return SR_ERR_ARG; |
440 | } | |
441 | ||
442 | if (!packet) { | |
443 | sr_err("session: %s: packet was NULL", __func__); | |
444 | return SR_ERR_ARG; | |
9f45fb3a UH |
445 | } |
446 | ||
62c82025 | 447 | for (l = session->datafeed_callbacks; l; l = l->next) { |
18beaeff BV |
448 | if (sr_log_loglevel_get() >= SR_LOG_DBG) |
449 | datafeed_dump(packet); | |
a1bb33af | 450 | cb = l->data; |
9f45fb3a | 451 | /* TODO: Check for cb != NULL. */ |
bb7ef793 | 452 | cb(dev, packet); |
a1bb33af | 453 | } |
9f45fb3a | 454 | |
e0508e67 | 455 | return SR_OK; |
a1bb33af UH |
456 | } |
457 | ||
9f45fb3a UH |
458 | /** |
459 | * TODO. | |
460 | * | |
9f45fb3a UH |
461 | * TODO: More error checks etc. |
462 | * | |
463 | * @param fd TODO. | |
464 | * @param events TODO. | |
465 | * @param timeout TODO. | |
466 | * @param callback TODO. | |
467 | * @param user_data TODO. | |
44dae539 | 468 | * |
e0508e67 UH |
469 | * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments, or |
470 | * SR_ERR_MALLOC upon memory allocation errors. | |
9f45fb3a | 471 | */ |
1a081ca6 UH |
472 | SR_API int sr_session_source_add(int fd, int events, int timeout, |
473 | sr_receive_data_callback callback, void *user_data) | |
544a4582 BV |
474 | { |
475 | struct source *new_sources, *s; | |
476 | ||
9f45fb3a UH |
477 | if (!callback) { |
478 | sr_err("session: %s: callback was NULL", __func__); | |
e0508e67 | 479 | return SR_ERR_ARG; |
9f45fb3a UH |
480 | } |
481 | ||
482 | /* Note: user_data can be NULL, that's not a bug. */ | |
483 | ||
133a37bf | 484 | new_sources = g_try_malloc0(sizeof(struct source) * (num_sources + 1)); |
9f45fb3a UH |
485 | if (!new_sources) { |
486 | sr_err("session: %s: new_sources malloc failed", __func__); | |
e0508e67 | 487 | return SR_ERR_MALLOC; |
9f45fb3a | 488 | } |
544a4582 BV |
489 | |
490 | if (sources) { | |
491 | memcpy(new_sources, sources, | |
492 | sizeof(struct source) * num_sources); | |
133a37bf | 493 | g_free(sources); |
544a4582 BV |
494 | } |
495 | ||
496 | s = &new_sources[num_sources++]; | |
497 | s->fd = fd; | |
498 | s->events = events; | |
499 | s->timeout = timeout; | |
500 | s->cb = callback; | |
501 | s->user_data = user_data; | |
502 | sources = new_sources; | |
503 | ||
504 | if (timeout != source_timeout && timeout > 0 | |
505 | && (source_timeout == -1 || timeout < source_timeout)) | |
506 | source_timeout = timeout; | |
9f45fb3a | 507 | |
e0508e67 | 508 | return SR_OK; |
544a4582 BV |
509 | } |
510 | ||
9f45fb3a UH |
511 | /** |
512 | * Remove the source belonging to the specified file descriptor. | |
513 | * | |
9f45fb3a | 514 | * TODO: More error checks. |
9f45fb3a UH |
515 | * |
516 | * @param fd TODO. | |
44dae539 | 517 | * |
e0508e67 UH |
518 | * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments, or |
519 | * SR_ERR_MALLOC upon memory allocation errors, SR_ERR_BUG upon | |
520 | * internal errors. | |
9f45fb3a | 521 | */ |
1a081ca6 | 522 | SR_API int sr_session_source_remove(int fd) |
544a4582 BV |
523 | { |
524 | struct source *new_sources; | |
525 | int old, new; | |
526 | ||
e0508e67 UH |
527 | if (!sources) { |
528 | sr_err("session: %s: sources was NULL", __func__); | |
529 | return SR_ERR_BUG; /* TODO: Other? */ | |
530 | } | |
531 | ||
532 | /* TODO: Check if 'fd' valid. */ | |
544a4582 | 533 | |
133a37bf | 534 | new_sources = g_try_malloc0(sizeof(struct source) * num_sources); |
9f45fb3a UH |
535 | if (!new_sources) { |
536 | sr_err("session: %s: new_sources malloc failed", __func__); | |
e0508e67 | 537 | return SR_ERR_MALLOC; |
9f45fb3a UH |
538 | } |
539 | ||
540 | for (old = 0, new = 0; old < num_sources; old++) { | |
544a4582 BV |
541 | if (sources[old].fd != fd) |
542 | memcpy(&new_sources[new++], &sources[old], | |
543 | sizeof(struct source)); | |
9f45fb3a | 544 | } |
544a4582 BV |
545 | |
546 | if (old != new) { | |
133a37bf | 547 | g_free(sources); |
544a4582 BV |
548 | sources = new_sources; |
549 | num_sources--; | |
550 | } else { | |
551 | /* Target fd was not found. */ | |
133a37bf | 552 | g_free(new_sources); |
544a4582 | 553 | } |
e0508e67 UH |
554 | |
555 | return SR_OK; | |
544a4582 | 556 | } |