Fix various clang warnings.
[sigrok-cli.git] / session.c
1 /*
2  * This file is part of the sigrok-cli project.
3  *
4  * Copyright (C) 2013 Bert Vermeulen <bert@biot.com>
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 <config.h>
21 #include <glib.h>
22 #include <glib/gstdio.h>
23 #include <string.h>
24 #include <stdlib.h>
25 #include "sigrok-cli.h"
26
27 static uint64_t limit_samples = 0;
28 static uint64_t limit_frames = 0;
29
30 #ifdef HAVE_SRD
31 extern struct srd_session *srd_sess;
32 #endif
33
34 static int set_limit_time(const struct sr_dev_inst *sdi)
35 {
36         GVariant *gvar;
37         uint64_t time_msec;
38         uint64_t samplerate;
39         struct sr_dev_driver *driver;
40
41         driver = sr_dev_inst_driver_get(sdi);
42
43         if (!(time_msec = sr_parse_timestring(opt_time))) {
44                 g_critical("Invalid time '%s'", opt_time);
45                 return SR_ERR;
46         }
47
48         if (sr_dev_config_capabilities_list(sdi, NULL, SR_CONF_LIMIT_MSEC)
49                         & SR_CONF_SET) {
50                 gvar = g_variant_new_uint64(time_msec);
51                 if (sr_config_set(sdi, NULL, SR_CONF_LIMIT_MSEC, gvar) != SR_OK) {
52                         g_critical("Failed to configure time limit.");
53                         return SR_ERR;
54                 }
55         } else if (sr_dev_config_capabilities_list(sdi, NULL, SR_CONF_SAMPLERATE)
56                         & (SR_CONF_GET | SR_CONF_SET)) {
57                 /* Convert to samples based on the samplerate. */
58                 sr_config_get(driver, sdi, NULL, SR_CONF_SAMPLERATE, &gvar);
59                 samplerate = g_variant_get_uint64(gvar);
60                 g_variant_unref(gvar);
61                 limit_samples = (samplerate) * time_msec / (uint64_t)1000;
62                 if (limit_samples == 0) {
63                         g_critical("Not enough time at this samplerate.");
64                         return SR_ERR;
65                 }
66                 gvar = g_variant_new_uint64(limit_samples);
67                 if (sr_config_set(sdi, NULL, SR_CONF_LIMIT_SAMPLES, gvar) != SR_OK) {
68                         g_critical("Failed to configure time-based sample limit.");
69                         return SR_ERR;
70                 }
71         } else {
72                 g_critical("This device does not support time limits.");
73                 return SR_ERR;
74         }
75
76         return SR_OK;
77 }
78
79 const struct sr_output *setup_output_format(const struct sr_dev_inst *sdi, FILE **outfile)
80 {
81         const struct sr_output_module *omod;
82         const struct sr_option **options;
83         const struct sr_output *o;
84         GHashTable *fmtargs, *fmtopts;
85         char *fmtspec;
86
87         if (!opt_output_format) {
88                 if (opt_output_file) {
89                         opt_output_format = DEFAULT_OUTPUT_FORMAT_FILE;
90                 } else {
91                         opt_output_format = DEFAULT_OUTPUT_FORMAT_NOFILE;
92                 }
93         }
94
95         fmtargs = parse_generic_arg(opt_output_format, TRUE);
96         fmtspec = g_hash_table_lookup(fmtargs, "sigrok_key");
97         if (!fmtspec)
98                 g_critical("Invalid output format.");
99         if (!(omod = sr_output_find(fmtspec)))
100                 g_critical("Unknown output module '%s'.", fmtspec);
101         g_hash_table_remove(fmtargs, "sigrok_key");
102         if ((options = sr_output_options_get(omod))) {
103                 fmtopts = generic_arg_to_opt(options, fmtargs);
104                 sr_output_options_free(options);
105         } else
106                 fmtopts = NULL;
107         o = sr_output_new(omod, fmtopts, sdi, opt_output_file);
108
109         if (opt_output_file) {
110                 if (!sr_output_test_flag(omod, SR_OUTPUT_INTERNAL_IO_HANDLING))
111                         *outfile = g_fopen(opt_output_file, "wb");
112                 else
113                         *outfile = NULL;
114         } else {
115                 *outfile = stdout;
116         }
117
118         if (fmtopts)
119                 g_hash_table_destroy(fmtopts);
120         g_hash_table_destroy(fmtargs);
121
122         return o;
123 }
124
125 const struct sr_transform *setup_transform_module(const struct sr_dev_inst *sdi)
126 {
127         const struct sr_transform_module *tmod;
128         const struct sr_option **options;
129         const struct sr_transform *t;
130         GHashTable *fmtargs, *fmtopts;
131         char *fmtspec;
132
133         if (!opt_transform_module)
134                 opt_transform_module = "nop";
135
136         fmtargs = parse_generic_arg(opt_transform_module, TRUE);
137         fmtspec = g_hash_table_lookup(fmtargs, "sigrok_key");
138         if (!fmtspec)
139                 g_critical("Invalid transform module.");
140         if (!(tmod = sr_transform_find(fmtspec)))
141                 g_critical("Unknown transform module '%s'.", fmtspec);
142         g_hash_table_remove(fmtargs, "sigrok_key");
143         if ((options = sr_transform_options_get(tmod))) {
144                 fmtopts = generic_arg_to_opt(options, fmtargs);
145                 sr_transform_options_free(options);
146         } else
147                 fmtopts = NULL;
148         t = sr_transform_new(tmod, fmtopts, sdi);
149         if (fmtopts)
150                 g_hash_table_destroy(fmtopts);
151         g_hash_table_destroy(fmtargs);
152
153         return t;
154 }
155
156 void datafeed_in(const struct sr_dev_inst *sdi,
157                 const struct sr_datafeed_packet *packet, void *cb_data)
158 {
159         const struct sr_datafeed_meta *meta;
160         const struct sr_datafeed_logic *logic;
161         const struct sr_datafeed_analog *analog;
162         struct sr_session *session;
163         struct sr_config *src;
164         static const struct sr_output *o = NULL;
165         static const struct sr_output *oa = NULL;
166         static uint64_t rcvd_samples_logic = 0;
167         static uint64_t rcvd_samples_analog = 0;
168         static uint64_t samplerate = 0;
169         static int triggered = 0;
170         static FILE *outfile = NULL;
171         GSList *l;
172         GString *out;
173         GVariant *gvar;
174         uint64_t end_sample;
175         uint64_t input_len;
176         struct sr_dev_driver *driver;
177
178         /* Avoid warnings when building without decoder support. */
179         (void)session;
180         (void)input_len;
181
182         driver = sr_dev_inst_driver_get(sdi);
183
184         /* If the first packet to come in isn't a header, don't even try. */
185         if (packet->type != SR_DF_HEADER && !o)
186                 return;
187
188         session = cb_data;
189         switch (packet->type) {
190         case SR_DF_HEADER:
191                 g_debug("cli: Received SR_DF_HEADER.");
192                 if (!(o = setup_output_format(sdi, &outfile)))
193                         g_critical("Failed to initialize output module.");
194
195                 /* Set up backup analog output module. */
196                 oa = sr_output_new(sr_output_find("analog"), NULL, sdi, NULL);
197
198                 rcvd_samples_logic = rcvd_samples_analog = 0;
199
200                 if (maybe_config_get(driver, sdi, NULL, SR_CONF_SAMPLERATE,
201                                 &gvar) == SR_OK) {
202                         samplerate = g_variant_get_uint64(gvar);
203                         g_variant_unref(gvar);
204                 }
205
206 #ifdef HAVE_SRD
207                 if (opt_pds) {
208                         if (samplerate) {
209                                 if (srd_session_metadata_set(srd_sess, SRD_CONF_SAMPLERATE,
210                                                 g_variant_new_uint64(samplerate)) != SRD_OK) {
211                                         g_critical("Failed to configure decode session.");
212                                         break;
213                                 }
214                         }
215                         if (srd_session_start(srd_sess) != SRD_OK) {
216                                 g_critical("Failed to start decode session.");
217                                 break;
218                         }
219                 }
220 #endif
221                 break;
222
223         case SR_DF_META:
224                 g_debug("cli: Received SR_DF_META.");
225                 meta = packet->payload;
226                 for (l = meta->config; l; l = l->next) {
227                         src = l->data;
228                         switch (src->key) {
229                         case SR_CONF_SAMPLERATE:
230                                 samplerate = g_variant_get_uint64(src->data);
231                                 g_debug("cli: Got samplerate %"PRIu64" Hz.", samplerate);
232 #ifdef HAVE_SRD
233                                 if (opt_pds) {
234                                         if (srd_session_metadata_set(srd_sess, SRD_CONF_SAMPLERATE,
235                                                         g_variant_new_uint64(samplerate)) != SRD_OK) {
236                                                 g_critical("Failed to pass samplerate to decoder.");
237                                         }
238                                 }
239 #endif
240                                 break;
241                         case SR_CONF_SAMPLE_INTERVAL:
242                                 samplerate = g_variant_get_uint64(src->data);
243                                 g_debug("cli: Got sample interval %"PRIu64" ms.", samplerate);
244                                 break;
245                         default:
246                                 /* Unknown metadata is not an error. */
247                                 break;
248                         }
249                 }
250                 break;
251
252         case SR_DF_TRIGGER:
253                 g_debug("cli: Received SR_DF_TRIGGER.");
254                 triggered = 1;
255                 break;
256
257         case SR_DF_LOGIC:
258                 logic = packet->payload;
259                 g_message("cli: Received SR_DF_LOGIC (%"PRIu64" bytes, unitsize = %d).",
260                                 logic->length, logic->unitsize);
261                 if (logic->length == 0)
262                         break;
263
264                 /* Don't store any samples until triggered. */
265                 if (opt_wait_trigger && !triggered)
266                         break;
267
268                 if (limit_samples && rcvd_samples_logic >= limit_samples)
269                         break;
270
271                 end_sample = rcvd_samples_logic + logic->length / logic->unitsize;
272                 /* Cut off last packet according to the sample limit. */
273                 if (limit_samples && end_sample > limit_samples)
274                         end_sample = limit_samples;
275                 input_len = (end_sample - rcvd_samples_logic) * logic->unitsize;
276
277                 if (opt_pds) {
278 #ifdef HAVE_SRD
279                         if (srd_session_send(srd_sess, rcvd_samples_logic, end_sample,
280                                         logic->data, input_len, logic->unitsize) != SRD_OK)
281                                 sr_session_stop(session);
282 #endif
283                 }
284
285                 rcvd_samples_logic = end_sample;
286                 break;
287
288         case SR_DF_ANALOG:
289                 analog = packet->payload;
290                 g_message("cli: Received SR_DF_ANALOG (%d samples).", analog->num_samples);
291                 if (analog->num_samples == 0)
292                         break;
293
294                 if (limit_samples && rcvd_samples_analog >= limit_samples)
295                         break;
296
297                 rcvd_samples_analog += analog->num_samples;
298                 break;
299
300         case SR_DF_FRAME_BEGIN:
301                 g_debug("cli: Received SR_DF_FRAME_BEGIN.");
302                 break;
303
304         case SR_DF_FRAME_END:
305                 g_debug("cli: Received SR_DF_FRAME_END.");
306                 break;
307
308         default:
309                 break;
310         }
311
312         if (o && !opt_pds) {
313                 if (sr_output_send(o, packet, &out) == SR_OK) {
314                         if (!out || (out->len == 0
315                                         && !opt_output_format
316                                         && packet->type == SR_DF_ANALOG)) {
317                                 /*
318                                  * The user didn't specify an output module,
319                                  * but needs to see this analog data.
320                                  */
321                                 sr_output_send(oa, packet, &out);
322                         }
323                         if (outfile && out && out->len > 0) {
324                                 fwrite(out->str, 1, out->len, outfile);
325                                 fflush(outfile);
326                         }
327                         if (out)
328                                 g_string_free(out, TRUE);
329                 }
330         }
331
332         /*
333          * SR_DF_END needs to be handled after the output module's receive()
334          * is called, so it can properly clean up that module.
335          */
336         if (packet->type == SR_DF_END) {
337                 g_debug("cli: Received SR_DF_END.");
338
339                 if (o)
340                         sr_output_free(o);
341                 o = NULL;
342
343                 sr_output_free(oa);
344                 oa = NULL;
345
346                 if (outfile && outfile != stdout)
347                         fclose(outfile);
348
349                 if (limit_samples) {
350                         if (rcvd_samples_logic > 0 && rcvd_samples_logic < limit_samples)
351                                 g_warning("Device only sent %" PRIu64 " samples.",
352                                            rcvd_samples_logic);
353                         else if (rcvd_samples_analog > 0 && rcvd_samples_analog < limit_samples)
354                                 g_warning("Device only sent %" PRIu64 " samples.",
355                                            rcvd_samples_analog);
356                 }
357         }
358
359 }
360
361 int opt_to_gvar(char *key, char *value, struct sr_config *src)
362 {
363         const struct sr_key_info *srci, *srmqi;
364         double tmp_double, dlow, dhigh;
365         uint64_t tmp_u64, p, q, low, high, mqflags;
366         uint32_t mq;
367         GVariant *rational[2], *range[2], *gtup[2];
368         GVariantBuilder *vbl;
369         gboolean tmp_bool;
370         gchar **keyval;
371         int ret, i;
372
373         if (!(srci = sr_key_info_name_get(SR_KEY_CONFIG, key))) {
374                 g_critical("Unknown device option '%s'.", (char *) key);
375                 return -1;
376         }
377         src->key = srci->key;
378
379         if ((!value || strlen(value) == 0) &&
380                 (srci->datatype != SR_T_BOOL)) {
381                 g_critical("Option '%s' needs a value.", (char *)key);
382                 return -1;
383         }
384
385         ret = 0;
386         switch (srci->datatype) {
387         case SR_T_UINT64:
388                 ret = sr_parse_sizestring(value, &tmp_u64);
389                 if (ret != 0)
390                         break;
391                 src->data = g_variant_new_uint64(tmp_u64);
392                 break;
393         case SR_T_INT32:
394                 ret = sr_parse_sizestring(value, &tmp_u64);
395                 if (ret != 0)
396                         break;
397                 src->data = g_variant_new_int32(tmp_u64);
398                 break;
399         case SR_T_STRING:
400                 src->data = g_variant_new_string(value);
401                 break;
402         case SR_T_BOOL:
403                 if (!value)
404                         tmp_bool = TRUE;
405                 else
406                         tmp_bool = sr_parse_boolstring(value);
407                 src->data = g_variant_new_boolean(tmp_bool);
408                 break;
409         case SR_T_FLOAT:
410                 tmp_double = strtof(value, NULL);
411                 src->data = g_variant_new_double(tmp_double);
412                 break;
413         case SR_T_RATIONAL_PERIOD:
414                 if ((ret = sr_parse_period(value, &p, &q)) != SR_OK)
415                         break;
416                 rational[0] = g_variant_new_uint64(p);
417                 rational[1] = g_variant_new_uint64(q);
418                 src->data = g_variant_new_tuple(rational, 2);
419                 break;
420         case SR_T_RATIONAL_VOLT:
421                 if ((ret = sr_parse_voltage(value, &p, &q)) != SR_OK)
422                         break;
423                 rational[0] = g_variant_new_uint64(p);
424                 rational[1] = g_variant_new_uint64(q);
425                 src->data = g_variant_new_tuple(rational, 2);
426                 break;
427         case SR_T_UINT64_RANGE:
428                 if (sscanf(value, "%"PRIu64"-%"PRIu64, &low, &high) != 2) {
429                         ret = -1;
430                         break;
431                 } else {
432                         range[0] = g_variant_new_uint64(low);
433                         range[1] = g_variant_new_uint64(high);
434                         src->data = g_variant_new_tuple(range, 2);
435                 }
436                 break;
437         case SR_T_DOUBLE_RANGE:
438                 if (sscanf(value, "%lf-%lf", &dlow, &dhigh) != 2) {
439                         ret = -1;
440                         break;
441                 } else {
442                         range[0] = g_variant_new_double(dlow);
443                         range[1] = g_variant_new_double(dhigh);
444                         src->data = g_variant_new_tuple(range, 2);
445                 }
446                 break;
447         case SR_T_KEYVALUE:
448                 /* Expects the argument to be in the form of key=value. */
449                 keyval = g_strsplit(value, "=", 2);
450                 if (!keyval[0] || !keyval[1]) {
451                         g_strfreev(keyval);
452                         ret = -1;
453                         break;
454                 } else {
455                         vbl = g_variant_builder_new(G_VARIANT_TYPE_DICTIONARY);
456                         g_variant_builder_add(vbl, "{ss}",
457                                               keyval[0], keyval[1]);
458                         src->data = g_variant_builder_end(vbl);
459                         g_strfreev(keyval);
460                 }
461                 break;
462         case SR_T_MQ:
463                 /*
464                   Argument is MQ id e.g. ("voltage") optionally followed by one
465                   or more /<mqflag> e.g. "/ac".
466                  */
467                 keyval = g_strsplit(value, "/", 0);
468                 if (!keyval[0] || !(srmqi = sr_key_info_name_get(SR_KEY_MQ, keyval[0]))) {
469                         g_strfreev(keyval);
470                         ret = -1;
471                         break;
472                 }
473                 mq = srmqi->key;
474                 mqflags = 0;
475                 for (i = 1; keyval[i]; i++) {
476                         if (!(srmqi = sr_key_info_name_get(SR_KEY_MQFLAGS, keyval[i]))) {
477                                 ret = -1;
478                                 break;
479                         }
480                         mqflags |= srmqi->key;
481                 }
482                 g_strfreev(keyval);
483                 if (ret != -1) {
484                         gtup[0] = g_variant_new_uint32(mq);
485                         gtup[1] = g_variant_new_uint64(mqflags);
486                         src->data = g_variant_new_tuple(gtup, 2);
487                 }
488                 break;
489         default:
490                 g_critical("Unknown data type specified for option '%s' "
491                            "(driver implementation bug?).", key);
492                 ret = -1;
493         }
494
495         if (ret < 0)
496                 g_critical("Invalid value: '%s' for option '%s'", value, key);
497
498         return ret;
499 }
500
501 int set_dev_options(struct sr_dev_inst *sdi, GHashTable *args)
502 {
503         struct sr_config src;
504         struct sr_channel_group *cg;
505         GHashTableIter iter;
506         gpointer key, value;
507         int ret;
508
509         g_hash_table_iter_init(&iter, args);
510         while (g_hash_table_iter_next(&iter, &key, &value)) {
511                 if ((ret = opt_to_gvar(key, value, &src)) != 0)
512                         return ret;
513                 cg = select_channel_group(sdi);
514                 if ((ret = maybe_config_set(sr_dev_inst_driver_get(sdi), sdi, cg,
515                                 src.key, src.data)) != SR_OK) {
516                         g_critical("Failed to set device option '%s': %s.",
517                                    (char *)key, sr_strerror(ret));
518                         return ret;
519                 }
520         }
521
522         return SR_OK;
523 }
524
525 void run_session(void)
526 {
527         GSList *devices, *real_devices, *sd;
528         GHashTable *devargs;
529         GVariant *gvar;
530         struct sr_session *session;
531         struct sr_trigger *trigger;
532         struct sr_dev_inst *sdi;
533         uint64_t min_samples, max_samples;
534         GArray *dev_opts;
535         guint i;
536         int is_demo_dev;
537         struct sr_dev_driver *driver;
538         const struct sr_transform *t;
539         GMainLoop *main_loop;
540
541         devices = device_scan();
542         if (!devices) {
543                 g_critical("No devices found.");
544                 return;
545         }
546
547         real_devices = NULL;
548         for (sd = devices; sd; sd = sd->next) {
549                 sdi = sd->data;
550
551                 driver = sr_dev_inst_driver_get(sdi);
552
553                 if (!(dev_opts = sr_dev_options(driver, sdi, NULL))) {
554                         g_critical("Failed to query list device options.");
555                         return;
556                 }
557
558                 is_demo_dev = 0;
559                 for (i = 0; i < dev_opts->len; i++) {
560                         if (g_array_index(dev_opts, uint32_t, i) == SR_CONF_DEMO_DEV)
561                                 is_demo_dev = 1;
562                 }
563
564                 g_array_free(dev_opts, TRUE);
565
566                 if (!is_demo_dev)
567                         real_devices = g_slist_append(real_devices, sdi);
568         }
569
570         if (g_slist_length(devices) > 1) {
571                 if (g_slist_length(real_devices) != 1) {
572                         g_critical("sigrok-cli only supports one device for capturing.");
573                         return;
574                 } else {
575                         /* We only have one non-demo device. */
576                         g_slist_free(devices);
577                         devices = real_devices;
578                         real_devices = NULL;
579                 }
580         }
581
582         sdi = devices->data;
583         g_slist_free(devices);
584         g_slist_free(real_devices);
585
586         sr_session_new(sr_ctx, &session);
587         sr_session_datafeed_callback_add(session, datafeed_in, NULL);
588
589         if (sr_dev_open(sdi) != SR_OK) {
590                 g_critical("Failed to open device.");
591                 return;
592         }
593
594         if (sr_session_dev_add(session, sdi) != SR_OK) {
595                 g_critical("Failed to add device to session.");
596                 sr_session_destroy(session);
597                 return;
598         }
599
600         if (opt_config) {
601                 if ((devargs = parse_generic_arg(opt_config, FALSE))) {
602                         if (set_dev_options(sdi, devargs) != SR_OK)
603                                 return;
604                         g_hash_table_destroy(devargs);
605                 }
606         }
607
608         if (select_channels(sdi) != SR_OK) {
609                 g_critical("Failed to set channels.");
610                 sr_session_destroy(session);
611                 return;
612         }
613
614         trigger = NULL;
615         if (opt_triggers) {
616                 if (!parse_triggerstring(sdi, opt_triggers, &trigger)) {
617                         sr_session_destroy(session);
618                         return;
619                 }
620                 if (sr_session_trigger_set(session, trigger) != SR_OK) {
621                         sr_session_destroy(session);
622                         return;
623                 }
624         }
625
626         if (opt_continuous) {
627                 if (!sr_dev_has_option(sdi, SR_CONF_CONTINUOUS)) {
628                         g_critical("This device does not support continuous sampling.");
629                         sr_session_destroy(session);
630                         return;
631                 }
632         }
633
634         if (opt_time) {
635                 if (set_limit_time(sdi) != SR_OK) {
636                         sr_session_destroy(session);
637                         return;
638                 }
639         }
640
641         if (opt_samples) {
642                 if ((sr_parse_sizestring(opt_samples, &limit_samples) != SR_OK)) {
643                         g_critical("Invalid sample limit '%s'.", opt_samples);
644                         sr_session_destroy(session);
645                         return;
646                 }
647                 if (maybe_config_list(driver, sdi, NULL, SR_CONF_LIMIT_SAMPLES,
648                                 &gvar) == SR_OK) {
649                         /*
650                          * The device has no compression, or compression is turned
651                          * off, and publishes its sample memory size.
652                          */
653                         g_variant_get(gvar, "(tt)", &min_samples, &max_samples);
654                         g_variant_unref(gvar);
655                         if (limit_samples < min_samples) {
656                                 g_critical("The device stores at least %"PRIu64
657                                                 " samples with the current settings.", min_samples);
658                         }
659                         if (limit_samples > max_samples) {
660                                 g_critical("The device can store only %"PRIu64
661                                                 " samples with the current settings.", max_samples);
662                         }
663                 }
664                 gvar = g_variant_new_uint64(limit_samples);
665                 if (maybe_config_set(sr_dev_inst_driver_get(sdi), sdi, NULL, SR_CONF_LIMIT_SAMPLES, gvar) != SR_OK) {
666                         g_critical("Failed to configure sample limit.");
667                         sr_session_destroy(session);
668                         return;
669                 }
670         }
671
672         if (opt_frames) {
673                 if ((sr_parse_sizestring(opt_frames, &limit_frames) != SR_OK)) {
674                         g_critical("Invalid sample limit '%s'.", opt_samples);
675                         sr_session_destroy(session);
676                         return;
677                 }
678                 gvar = g_variant_new_uint64(limit_frames);
679                 if (maybe_config_set(sr_dev_inst_driver_get(sdi), sdi, NULL, SR_CONF_LIMIT_FRAMES, gvar) != SR_OK) {
680                         g_critical("Failed to configure frame limit.");
681                         sr_session_destroy(session);
682                         return;
683                 }
684         }
685
686         if (!(t = setup_transform_module(sdi)))
687                 g_critical("Failed to initialize transform module.");
688
689         main_loop = g_main_loop_new(NULL, FALSE);
690
691         sr_session_stopped_callback_set(session,
692                 (sr_session_stopped_callback)g_main_loop_quit, main_loop);
693
694         if (sr_session_start(session) != SR_OK) {
695                 g_critical("Failed to start session.");
696                 g_main_loop_unref(main_loop);
697                 sr_session_destroy(session);
698                 return;
699         }
700
701         if (opt_continuous)
702                 add_anykey(session);
703
704         g_main_loop_run(main_loop);
705
706         if (opt_continuous)
707                 clear_anykey();
708
709         if (trigger)
710                 sr_trigger_free(trigger);
711
712         sr_session_datafeed_callback_remove_all(session);
713         g_main_loop_unref(main_loop);
714         sr_session_destroy(session);
715 }