2 * This file is part of the libsigrok project.
4 * Copyright (C) 2010-2012 Bert Vermeulen <bert@biot.com>
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.
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.
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/>.
26 #include <libsigrok/libsigrok.h>
27 #include "libsigrok-internal.h"
30 #define LOG_PREFIX "session"
36 * Creating, using, or destroying libsigrok sessions.
40 * @defgroup grp_session Session handling
42 * Creating, using, or destroying libsigrok sessions.
49 sr_receive_data_callback cb;
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.
58 struct datafeed_callback {
59 sr_datafeed_callback cb;
64 * Create a new session.
66 * @param ctx The context in which to create the new session.
67 * @param new_session This will contain a pointer to the newly created
68 * session if the return value is SR_OK, otherwise the value
69 * is undefined and should not be used. Must not be NULL.
71 * @retval SR_OK Success.
72 * @retval SR_ERR_ARG Invalid argument.
76 SR_API int sr_session_new(struct sr_context *ctx,
77 struct sr_session **new_session)
79 struct sr_session *session;
84 session = g_malloc0(sizeof(struct sr_session));
87 session->source_timeout = -1;
88 session->running = FALSE;
89 session->abort_session = FALSE;
90 g_mutex_init(&session->stop_mutex);
92 *new_session = session;
99 * This frees up all memory used by the session.
101 * @param session The session to destroy. Must not be NULL.
103 * @retval SR_OK Success.
104 * @retval SR_ERR_ARG Invalid session passed.
108 SR_API int sr_session_destroy(struct sr_session *session)
111 sr_err("%s: session was NULL", __func__);
115 sr_session_dev_remove_all(session);
116 g_mutex_clear(&session->stop_mutex);
117 if (session->trigger)
118 sr_trigger_free(session->trigger);
120 g_slist_free_full(session->owned_devs, (GDestroyNotify)sr_dev_inst_free);
128 * Remove all the devices from a session.
130 * The session itself (i.e., the struct sr_session) is not free'd and still
131 * exists after this function returns.
133 * @param session The session to use. Must not be NULL.
135 * @retval SR_OK Success.
136 * @retval SR_ERR_BUG Invalid session passed.
140 SR_API int sr_session_dev_remove_all(struct sr_session *session)
142 struct sr_dev_inst *sdi;
146 sr_err("%s: session was NULL", __func__);
150 for (l = session->devs; l; l = l->next) {
151 sdi = (struct sr_dev_inst *) l->data;
155 g_slist_free(session->devs);
156 session->devs = NULL;
162 * Add a device instance to a session.
164 * @param session The session to add to. Must not be NULL.
165 * @param sdi The device instance to add to a session. Must not
166 * be NULL. Also, sdi->driver and sdi->driver->dev_open must
169 * @retval SR_OK Success.
170 * @retval SR_ERR_ARG Invalid argument.
174 SR_API int sr_session_dev_add(struct sr_session *session,
175 struct sr_dev_inst *sdi)
180 sr_err("%s: sdi was NULL", __func__);
185 sr_err("%s: session was NULL", __func__);
189 /* If sdi->session is not NULL, the device is already in this or
190 * another session. */
192 sr_err("%s: already assigned to session", __func__);
196 /* If sdi->driver is NULL, this is a virtual device. */
198 /* Just add the device, don't run dev_open(). */
199 session->devs = g_slist_append(session->devs, (gpointer)sdi);
200 sdi->session = session;
204 /* sdi->driver is non-NULL (i.e. we have a real device). */
205 if (!sdi->driver->dev_open) {
206 sr_err("%s: sdi->driver->dev_open was NULL", __func__);
210 session->devs = g_slist_append(session->devs, (gpointer)sdi);
211 sdi->session = session;
213 if (session->running) {
214 /* Adding a device to a running session. Commit settings
215 * and start acquisition on that device now. */
216 if ((ret = sr_config_commit(sdi)) != SR_OK) {
217 sr_err("Failed to commit device settings before "
218 "starting acquisition in running session (%s)",
222 if ((ret = sdi->driver->dev_acquisition_start(sdi,
223 (void *)sdi)) != SR_OK) {
224 sr_err("Failed to start acquisition of device in "
225 "running session (%s)", sr_strerror(ret));
234 * List all device instances attached to a session.
236 * @param session The session to use. Must not be NULL.
237 * @param devlist A pointer where the device instance list will be
238 * stored on return. If no devices are in the session,
239 * this will be NULL. Each element in the list points
240 * to a struct sr_dev_inst *.
241 * The list must be freed by the caller, but not the
242 * elements pointed to.
244 * @retval SR_OK Success.
245 * @retval SR_ERR_ARG Invalid argument.
249 SR_API int sr_session_dev_list(struct sr_session *session, GSList **devlist)
257 *devlist = g_slist_copy(session->devs);
263 * Remove all datafeed callbacks in a session.
265 * @param session The session to use. Must not be NULL.
267 * @retval SR_OK Success.
268 * @retval SR_ERR_ARG Invalid session passed.
272 SR_API int sr_session_datafeed_callback_remove_all(struct sr_session *session)
275 sr_err("%s: session was NULL", __func__);
279 g_slist_free_full(session->datafeed_callbacks, g_free);
280 session->datafeed_callbacks = NULL;
286 * Add a datafeed callback to a session.
288 * @param session The session to use. Must not be NULL.
289 * @param cb Function to call when a chunk of data is received.
291 * @param cb_data Opaque pointer passed in by the caller.
293 * @retval SR_OK Success.
294 * @retval SR_ERR_BUG No session exists.
298 SR_API int sr_session_datafeed_callback_add(struct sr_session *session,
299 sr_datafeed_callback cb, void *cb_data)
301 struct datafeed_callback *cb_struct;
304 sr_err("%s: session was NULL", __func__);
309 sr_err("%s: cb was NULL", __func__);
313 cb_struct = g_malloc0(sizeof(struct datafeed_callback));
315 cb_struct->cb_data = cb_data;
317 session->datafeed_callbacks =
318 g_slist_append(session->datafeed_callbacks, cb_struct);
324 * Get the trigger assigned to this session.
326 * @param session The session to use.
328 * @retval NULL Invalid (NULL) session was passed to the function.
329 * @retval other The trigger assigned to this session (can be NULL).
333 SR_API struct sr_trigger *sr_session_trigger_get(struct sr_session *session)
338 return session->trigger;
342 * Set the trigger of this session.
344 * @param session The session to use. Must not be NULL.
345 * @param trig The trigger to assign to this session. Can be NULL.
347 * @retval SR_OK Success.
348 * @retval SR_ERR_ARG Invalid argument.
352 SR_API int sr_session_trigger_set(struct sr_session *session, struct sr_trigger *trig)
357 session->trigger = trig;
362 static gboolean sr_session_check_aborted(struct sr_session *session)
366 g_mutex_lock(&session->stop_mutex);
367 stop = session->abort_session;
369 sr_session_stop_sync(session);
370 /* But once is enough. */
371 session->abort_session = FALSE;
373 g_mutex_unlock(&session->stop_mutex);
379 * Call every device in the current session's callback.
381 * For sessions not driven by select loops such as sr_session_run(),
382 * but driven by another scheduler, this can be used to poll the devices
383 * from within that scheduler.
385 * @param session The session to use. Must not be NULL.
386 * @param block If TRUE, this call will wait for any of the session's
387 * sources to fire an event on the file descriptors, or
388 * any of their timeouts to activate. In other words, this
389 * can be used as a select loop.
390 * If FALSE, return immediately if none of the sources has
392 * @retval SR_OK Success.
393 * @retval SR_ERR Error occurred.
395 static int sr_session_iteration(struct sr_session *session, gboolean block)
400 gboolean stop_checked;
402 struct source *source;
404 #ifdef HAVE_LIBUSB_1_0
409 timeout = block ? session->source_timeout : 0;
411 #ifdef HAVE_LIBUSB_1_0
412 if (session->ctx->usb_source_present) {
413 ret = libusb_get_next_timeout(session->ctx->libusb_ctx, &tv);
415 sr_err("Error getting libusb timeout: %s",
416 libusb_error_name(ret));
418 } else if (ret == 1) {
419 usb_timeout = tv.tv_sec * 1000 + tv.tv_usec / 1000;
420 timeout = MIN(timeout, usb_timeout);
425 ret = g_poll(session->pollfds, session->num_sources, timeout);
427 if (ret < 0 && errno != EINTR) {
428 sr_err("Error in poll: %s", g_strerror(errno));
433 sr_err("Error in poll: %d", ret);
437 stop_checked = FALSE;
440 for (i = 0; i < session->num_sources; i++) {
441 source = &session->sources[i];
442 pollfd = &session->pollfds[i];
443 revents = (ret > 0) ? pollfd->revents : 0;
445 if (revents > 0 || (ret == 0
446 && session->source_timeout == source->timeout)) {
448 * Invoke the source's callback on an event,
449 * or if the poll timed out and this source
450 * asked for that timeout.
452 if (!source->cb(pollfd->fd, revents, source->cb_data))
453 sr_session_source_remove(session,
454 source->poll_object);
456 * We want to take as little time as possible to stop
457 * the session if we have been told to do so. Therefore,
458 * we check the flag after processing every source, not
459 * just once per main event loop.
462 stopped = sr_session_check_aborted(session);
468 sr_session_check_aborted(session);
473 static int verify_trigger(struct sr_trigger *trigger)
475 struct sr_trigger_stage *stage;
476 struct sr_trigger_match *match;
479 if (!trigger->stages) {
480 sr_err("No trigger stages defined.");
484 sr_spew("Checking trigger:");
485 for (l = trigger->stages; l; l = l->next) {
487 if (!stage->matches) {
488 sr_err("Stage %d has no matches defined.", stage->stage);
491 for (m = stage->matches; m; m = m->next) {
493 if (!match->channel) {
494 sr_err("Stage %d match has no channel.", stage->stage);
498 sr_err("Stage %d match is not defined.", stage->stage);
501 sr_spew("Stage %d match on channel %s, match %d", stage->stage,
502 match->channel->name, match->match);
512 * @param session The session to use. Must not be NULL.
514 * @retval SR_OK Success.
515 * @retval SR_ERR_ARG Invalid session passed.
519 SR_API int sr_session_start(struct sr_session *session)
521 struct sr_dev_inst *sdi;
522 struct sr_channel *ch;
524 int enabled_channels, ret;
527 sr_err("%s: session was NULL", __func__);
531 if (!session->devs) {
532 sr_err("%s: session->devs was NULL; a session "
533 "cannot be started without devices.", __func__);
537 if (session->trigger && verify_trigger(session->trigger) != SR_OK)
540 sr_info("Starting.");
543 for (l = session->devs; l; l = l->next) {
545 enabled_channels = 0;
546 for (c = sdi->channels; c; c = c->next) {
553 if (enabled_channels == 0) {
555 sr_err("%s using connection %s has no enabled channels!",
556 sdi->driver->name, sdi->connection_id);
560 if ((ret = sr_config_commit(sdi)) != SR_OK) {
561 sr_err("Failed to commit device settings before "
562 "starting acquisition (%s)", sr_strerror(ret));
565 if ((ret = sdi->driver->dev_acquisition_start(sdi, sdi)) != SR_OK) {
566 sr_err("%s: could not start an acquisition "
567 "(%s)", __func__, sr_strerror(ret));
572 /* TODO: What if there are multiple devices? Which return code? */
580 * @param session The session to use. Must not be NULL.
582 * @retval SR_OK Success.
583 * @retval SR_ERR_ARG Invalid session passed.
587 SR_API int sr_session_run(struct sr_session *session)
590 sr_err("%s: session was NULL", __func__);
594 if (!session->devs) {
595 /* TODO: Actually the case? */
596 sr_err("%s: session->devs was NULL; a session "
597 "cannot be run without devices.", __func__);
600 session->running = TRUE;
604 /* Do we have real sources? */
605 if (session->num_sources == 1 && session->pollfds[0].fd == -1) {
606 /* Dummy source, freewheel over it. */
607 while (session->num_sources)
608 session->sources[0].cb(-1, 0, session->sources[0].cb_data);
610 /* Real sources, use g_poll() main loop. */
611 while (session->num_sources)
612 sr_session_iteration(session, TRUE);
621 * The session is stopped immediately, with all acquisition sessions stopped
622 * and hardware drivers cleaned up.
624 * This must be called from within the session thread, to prevent freeing
625 * resources that the session thread will try to use.
627 * @param session The session to use. Must not be NULL.
629 * @retval SR_OK Success.
630 * @retval SR_ERR_ARG Invalid session passed.
634 SR_PRIV int sr_session_stop_sync(struct sr_session *session)
636 struct sr_dev_inst *sdi;
640 sr_err("%s: session was NULL", __func__);
644 sr_info("Stopping.");
646 for (l = session->devs; l; l = l->next) {
649 if (sdi->driver->dev_acquisition_stop)
650 sdi->driver->dev_acquisition_stop(sdi, sdi);
653 session->running = FALSE;
661 * The session is stopped immediately, with all acquisition sessions being
662 * stopped and hardware drivers cleaned up.
664 * If the session is run in a separate thread, this function will not block
665 * until the session is finished executing. It is the caller's responsibility
666 * to wait for the session thread to return before assuming that the session is
667 * completely decommissioned.
669 * @param session The session to use. Must not be NULL.
671 * @retval SR_OK Success.
672 * @retval SR_ERR_ARG Invalid session passed.
676 SR_API int sr_session_stop(struct sr_session *session)
679 sr_err("%s: session was NULL", __func__);
683 g_mutex_lock(&session->stop_mutex);
684 session->abort_session = TRUE;
685 g_mutex_unlock(&session->stop_mutex);
693 * @param packet The packet to show debugging information for.
695 static void datafeed_dump(const struct sr_datafeed_packet *packet)
697 const struct sr_datafeed_logic *logic;
698 const struct sr_datafeed_analog *analog;
699 const struct sr_datafeed_analog2 *analog2;
701 /* Please use the same order as in libsigrok.h. */
702 switch (packet->type) {
704 sr_dbg("bus: Received SR_DF_HEADER packet.");
707 sr_dbg("bus: Received SR_DF_END packet.");
710 sr_dbg("bus: Received SR_DF_META packet.");
713 sr_dbg("bus: Received SR_DF_TRIGGER packet.");
716 logic = packet->payload;
717 sr_dbg("bus: Received SR_DF_LOGIC packet (%" PRIu64 " bytes, "
718 "unitsize = %d).", logic->length, logic->unitsize);
721 analog = packet->payload;
722 sr_dbg("bus: Received SR_DF_ANALOG packet (%d samples).",
723 analog->num_samples);
725 case SR_DF_FRAME_BEGIN:
726 sr_dbg("bus: Received SR_DF_FRAME_BEGIN packet.");
728 case SR_DF_FRAME_END:
729 sr_dbg("bus: Received SR_DF_FRAME_END packet.");
732 analog2 = packet->payload;
733 sr_dbg("bus: Received SR_DF_ANALOG2 packet (%d samples).",
734 analog2->num_samples);
737 sr_dbg("bus: Received unknown packet type: %d.", packet->type);
743 * Send a packet to whatever is listening on the datafeed bus.
745 * Hardware drivers use this to send a data packet to the frontend.
748 * @param packet The datafeed packet to send to the session bus.
750 * @retval SR_OK Success.
751 * @retval SR_ERR_ARG Invalid argument.
755 SR_PRIV int sr_session_send(const struct sr_dev_inst *sdi,
756 const struct sr_datafeed_packet *packet)
759 struct datafeed_callback *cb_struct;
760 struct sr_datafeed_packet *packet_in, *packet_out;
761 struct sr_transform *t;
765 sr_err("%s: sdi was NULL", __func__);
770 sr_err("%s: packet was NULL", __func__);
775 sr_err("%s: session was NULL", __func__);
780 * Pass the packet to the first transform module. If that returns
781 * another packet (instead of NULL), pass that packet to the next
782 * transform module in the list, and so on.
784 packet_in = (struct sr_datafeed_packet *)packet;
785 for (l = sdi->session->transforms; l; l = l->next) {
787 sr_spew("Running transform module '%s'.", t->module->id);
788 ret = t->module->receive(t, packet_in, &packet_out);
790 sr_err("Error while running transform module: %d.", ret);
795 * If any of the transforms don't return an output
798 sr_spew("Transform module didn't return a packet, aborting.");
802 * Use this transform module's output packet as input
803 * for the next transform module.
805 packet_in = packet_out;
811 * If the last transform did output a packet, pass it to all datafeed
814 for (l = sdi->session->datafeed_callbacks; l; l = l->next) {
815 if (sr_log_loglevel_get() >= SR_LOG_DBG)
816 datafeed_dump(packet);
818 cb_struct->cb(sdi, packet, cb_struct->cb_data);
825 * Add an event source for a file descriptor.
827 * @param session The session to use. Must not be NULL.
828 * @param pollfd The GPollFD.
829 * @param[in] timeout Max time to wait before the callback is called,
831 * @param cb Callback function to add. Must not be NULL.
832 * @param cb_data Data for the callback function. Can be NULL.
833 * @param poll_object TODO.
835 * @retval SR_OK Success.
836 * @retval SR_ERR_ARG Invalid argument.
838 static int _sr_session_source_add(struct sr_session *session, GPollFD *pollfd,
839 int timeout, sr_receive_data_callback cb, void *cb_data, gintptr poll_object)
841 struct source *new_sources, *s;
842 GPollFD *new_pollfds;
845 sr_err("%s: cb was NULL", __func__);
849 /* Note: cb_data can be NULL, that's not a bug. */
851 new_pollfds = g_realloc(session->pollfds,
852 sizeof(GPollFD) * (session->num_sources + 1));
853 new_sources = g_realloc(session->sources, sizeof(struct source) *
854 (session->num_sources + 1));
856 new_pollfds[session->num_sources] = *pollfd;
857 s = &new_sources[session->num_sources++];
858 s->timeout = timeout;
860 s->cb_data = cb_data;
861 s->poll_object = poll_object;
862 session->pollfds = new_pollfds;
863 session->sources = new_sources;
865 if (timeout != session->source_timeout && timeout > 0
866 && (session->source_timeout == -1 || timeout < session->source_timeout))
867 session->source_timeout = timeout;
873 * Add an event source for a file descriptor.
875 * @param session The session to use. Must not be NULL.
876 * @param fd The file descriptor.
877 * @param events Events to check for.
878 * @param timeout Max time to wait before the callback is called, ignored if 0.
879 * @param cb Callback function to add. Must not be NULL.
880 * @param cb_data Data for the callback function. Can be NULL.
882 * @retval SR_OK Success.
883 * @retval SR_ERR_ARG Invalid argument.
887 SR_API int sr_session_source_add(struct sr_session *session, int fd,
888 int events, int timeout, sr_receive_data_callback cb, void *cb_data)
896 return _sr_session_source_add(session, &p, timeout, cb, cb_data, (gintptr)fd);
900 * Add an event source for a GPollFD.
902 * @param session The session to use. Must not be NULL.
903 * @param pollfd The GPollFD.
904 * @param timeout Max time to wait before the callback is called, ignored if 0.
905 * @param cb Callback function to add. Must not be NULL.
906 * @param cb_data Data for the callback function. Can be NULL.
908 * @retval SR_OK Success.
909 * @retval SR_ERR_ARG Invalid argument.
913 SR_API int sr_session_source_add_pollfd(struct sr_session *session,
914 GPollFD *pollfd, int timeout, sr_receive_data_callback cb,
917 return _sr_session_source_add(session, pollfd, timeout, cb,
918 cb_data, (gintptr)pollfd);
922 * Add an event source for a GIOChannel.
924 * @param session The session to use. Must not be NULL.
925 * @param channel The GIOChannel.
926 * @param events Events to poll on.
927 * @param timeout Max time to wait before the callback is called, ignored if 0.
928 * @param cb Callback function to add. Must not be NULL.
929 * @param cb_data Data for the callback function. Can be NULL.
931 * @retval SR_OK Success.
932 * @retval SR_ERR_ARG Invalid argument.
936 SR_API int sr_session_source_add_channel(struct sr_session *session,
937 GIOChannel *channel, int events, int timeout,
938 sr_receive_data_callback cb, void *cb_data)
943 g_io_channel_win32_make_pollfd(channel, events, &p);
945 p.fd = g_io_channel_unix_get_fd(channel);
950 return _sr_session_source_add(session, &p, timeout, cb, cb_data, (gintptr)channel);
954 * Remove the source belonging to the specified channel.
956 * @param session The session to use. Must not be NULL.
957 * @param poll_object The channel for which the source should be removed.
959 * @retval SR_OK Success
960 * @retval SR_ERR_ARG Invalid arguments
961 * @retval SR_ERR_BUG Internal error
963 static int _sr_session_source_remove(struct sr_session *session, gintptr poll_object)
967 if (!session->sources || !session->num_sources) {
968 sr_err("%s: sources was NULL", __func__);
972 for (old = 0; old < session->num_sources; old++) {
973 if (session->sources[old].poll_object == poll_object)
977 /* fd not found, nothing to do */
978 if (old == session->num_sources)
981 session->num_sources--;
983 if (old != session->num_sources) {
984 memmove(&session->pollfds[old], &session->pollfds[old + 1],
985 (session->num_sources - old) * sizeof(GPollFD));
986 memmove(&session->sources[old], &session->sources[old + 1],
987 (session->num_sources - old) * sizeof(struct source));
990 session->pollfds = g_realloc(session->pollfds, sizeof(GPollFD) * session->num_sources);
991 session->sources = g_realloc(session->sources, sizeof(struct source) * session->num_sources);
997 * Remove the source belonging to the specified file descriptor.
999 * @param session The session to use. Must not be NULL.
1000 * @param fd The file descriptor for which the source should be removed.
1002 * @retval SR_OK Success
1003 * @retval SR_ERR_ARG Invalid argument
1004 * @retval SR_ERR_BUG Internal error.
1008 SR_API int sr_session_source_remove(struct sr_session *session, int fd)
1010 return _sr_session_source_remove(session, (gintptr)fd);
1014 * Remove the source belonging to the specified poll descriptor.
1016 * @param session The session to use. Must not be NULL.
1017 * @param pollfd The poll descriptor for which the source should be removed.
1019 * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments, or
1020 * SR_ERR_MALLOC upon memory allocation errors, SR_ERR_BUG upon
1025 SR_API int sr_session_source_remove_pollfd(struct sr_session *session,
1028 return _sr_session_source_remove(session, (gintptr)pollfd);
1032 * Remove the source belonging to the specified channel.
1034 * @param session The session to use. Must not be NULL.
1035 * @param channel The channel for which the source should be removed.
1037 * @retval SR_OK Success.
1038 * @retval SR_ERR_ARG Invalid argument.
1039 * @return SR_ERR_BUG Internal error.
1043 SR_API int sr_session_source_remove_channel(struct sr_session *session,
1044 GIOChannel *channel)
1046 return _sr_session_source_remove(session, (gintptr)channel);
1049 static void copy_src(struct sr_config *src, struct sr_datafeed_meta *meta_copy)
1051 g_variant_ref(src->data);
1052 meta_copy->config = g_slist_append(meta_copy->config,
1053 g_memdup(src, sizeof(struct sr_config)));
1056 SR_PRIV int sr_packet_copy(const struct sr_datafeed_packet *packet,
1057 struct sr_datafeed_packet **copy)
1059 const struct sr_datafeed_meta *meta;
1060 struct sr_datafeed_meta *meta_copy;
1061 const struct sr_datafeed_logic *logic;
1062 struct sr_datafeed_logic *logic_copy;
1063 const struct sr_datafeed_analog *analog;
1064 struct sr_datafeed_analog *analog_copy;
1067 *copy = g_malloc0(sizeof(struct sr_datafeed_packet));
1068 (*copy)->type = packet->type;
1070 switch (packet->type) {
1076 payload = g_malloc(sizeof(struct sr_datafeed_header));
1077 memcpy(payload, packet->payload, sizeof(struct sr_datafeed_header));
1078 (*copy)->payload = payload;
1081 meta = packet->payload;
1082 meta_copy = g_malloc0(sizeof(struct sr_datafeed_meta));
1083 g_slist_foreach(meta->config, (GFunc)copy_src, meta_copy->config);
1084 (*copy)->payload = meta_copy;
1087 logic = packet->payload;
1088 logic_copy = g_malloc(sizeof(logic));
1089 logic_copy->length = logic->length;
1090 logic_copy->unitsize = logic->unitsize;
1091 memcpy(logic_copy->data, logic->data, logic->length * logic->unitsize);
1092 (*copy)->payload = logic_copy;
1095 analog = packet->payload;
1096 analog_copy = g_malloc(sizeof(analog));
1097 analog_copy->channels = g_slist_copy(analog->channels);
1098 analog_copy->num_samples = analog->num_samples;
1099 analog_copy->mq = analog->mq;
1100 analog_copy->unit = analog->unit;
1101 analog_copy->mqflags = analog->mqflags;
1102 memcpy(analog_copy->data, analog->data,
1103 analog->num_samples * sizeof(float));
1104 (*copy)->payload = analog_copy;
1107 sr_err("Unknown packet type %d", packet->type);
1114 void sr_packet_free(struct sr_datafeed_packet *packet)
1116 const struct sr_datafeed_meta *meta;
1117 const struct sr_datafeed_logic *logic;
1118 const struct sr_datafeed_analog *analog;
1119 struct sr_config *src;
1122 switch (packet->type) {
1128 /* Payload is a simple struct. */
1129 g_free((void *)packet->payload);
1132 meta = packet->payload;
1133 for (l = meta->config; l; l = l->next) {
1135 g_variant_unref(src->data);
1138 g_slist_free(meta->config);
1139 g_free((void *)packet->payload);
1142 logic = packet->payload;
1143 g_free(logic->data);
1144 g_free((void *)packet->payload);
1147 analog = packet->payload;
1148 g_slist_free(analog->channels);
1149 g_free(analog->data);
1150 g_free((void *)packet->payload);
1153 sr_err("Unknown packet type %d", packet->type);