configure.ac: Bump package version to 0.7.1.
[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         fmtargs = parse_generic_arg(opt_transform_module, TRUE);
134         fmtspec = g_hash_table_lookup(fmtargs, "sigrok_key");
135         if (!fmtspec)
136                 g_critical("Invalid transform module.");
137         if (!(tmod = sr_transform_find(fmtspec)))
138                 g_critical("Unknown transform module '%s'.", fmtspec);
139         g_hash_table_remove(fmtargs, "sigrok_key");
140         if ((options = sr_transform_options_get(tmod))) {
141                 fmtopts = generic_arg_to_opt(options, fmtargs);
142                 sr_transform_options_free(options);
143         } else
144                 fmtopts = NULL;
145         t = sr_transform_new(tmod, fmtopts, sdi);
146         if (fmtopts)
147                 g_hash_table_destroy(fmtopts);
148         g_hash_table_destroy(fmtargs);
149
150         return t;
151 }
152
153 void datafeed_in(const struct sr_dev_inst *sdi,
154                 const struct sr_datafeed_packet *packet, void *cb_data)
155 {
156         const struct sr_datafeed_meta *meta;
157         const struct sr_datafeed_logic *logic;
158         const struct sr_datafeed_analog *analog;
159         struct sr_session *session;
160         struct sr_config *src;
161         static const struct sr_output *o = NULL;
162         static const struct sr_output *oa = NULL;
163         static uint64_t rcvd_samples_logic = 0;
164         static uint64_t rcvd_samples_analog = 0;
165         static uint64_t samplerate = 0;
166         static int triggered = 0;
167         static FILE *outfile = NULL;
168         GSList *l;
169         GString *out;
170         GVariant *gvar;
171         uint64_t end_sample;
172         uint64_t input_len;
173         struct sr_dev_driver *driver;
174
175         /* Avoid warnings when building without decoder support. */
176         (void)session;
177         (void)input_len;
178
179         driver = sr_dev_inst_driver_get(sdi);
180
181         /* If the first packet to come in isn't a header, don't even try. */
182         if (packet->type != SR_DF_HEADER && !o)
183                 return;
184
185         session = cb_data;
186         switch (packet->type) {
187         case SR_DF_HEADER:
188                 g_debug("cli: Received SR_DF_HEADER.");
189                 if (!(o = setup_output_format(sdi, &outfile)))
190                         g_critical("Failed to initialize output module.");
191
192                 /* Set up backup analog output module. */
193                 if (outfile)
194                         oa = sr_output_new(sr_output_find("analog"), NULL,
195                                         sdi, NULL);
196
197                 rcvd_samples_logic = rcvd_samples_analog = 0;
198
199                 if (maybe_config_get(driver, sdi, NULL, SR_CONF_SAMPLERATE,
200                                 &gvar) == SR_OK) {
201                         samplerate = g_variant_get_uint64(gvar);
202                         g_variant_unref(gvar);
203                 }
204
205 #ifdef HAVE_SRD
206                 if (opt_pds) {
207                         if (samplerate) {
208                                 if (srd_session_metadata_set(srd_sess, SRD_CONF_SAMPLERATE,
209                                                 g_variant_new_uint64(samplerate)) != SRD_OK) {
210                                         g_critical("Failed to configure decode session.");
211                                         break;
212                                 }
213                         }
214                         if (srd_session_start(srd_sess) != SRD_OK) {
215                                 g_critical("Failed to start decode session.");
216                                 break;
217                         }
218                 }
219 #endif
220                 break;
221
222         case SR_DF_META:
223                 g_debug("cli: Received SR_DF_META.");
224                 meta = packet->payload;
225                 for (l = meta->config; l; l = l->next) {
226                         src = l->data;
227                         switch (src->key) {
228                         case SR_CONF_SAMPLERATE:
229                                 samplerate = g_variant_get_uint64(src->data);
230                                 g_debug("cli: Got samplerate %"PRIu64" Hz.", samplerate);
231 #ifdef HAVE_SRD
232                                 if (opt_pds) {
233                                         if (srd_session_metadata_set(srd_sess, SRD_CONF_SAMPLERATE,
234                                                         g_variant_new_uint64(samplerate)) != SRD_OK) {
235                                                 g_critical("Failed to pass samplerate to decoder.");
236                                         }
237                                 }
238 #endif
239                                 break;
240                         case SR_CONF_SAMPLE_INTERVAL:
241                                 samplerate = g_variant_get_uint64(src->data);
242                                 g_debug("cli: Got sample interval %"PRIu64" ms.", samplerate);
243                                 break;
244                         default:
245                                 /* Unknown metadata is not an error. */
246                                 break;
247                         }
248                 }
249                 break;
250
251         case SR_DF_TRIGGER:
252                 g_debug("cli: Received SR_DF_TRIGGER.");
253                 triggered = 1;
254                 break;
255
256         case SR_DF_LOGIC:
257                 logic = packet->payload;
258                 g_message("cli: Received SR_DF_LOGIC (%"PRIu64" bytes, unitsize = %d).",
259                                 logic->length, logic->unitsize);
260                 if (logic->length == 0)
261                         break;
262
263                 /* Don't store any samples until triggered. */
264                 if (opt_wait_trigger && !triggered)
265                         break;
266
267                 if (limit_samples && rcvd_samples_logic >= limit_samples)
268                         break;
269
270                 end_sample = rcvd_samples_logic + logic->length / logic->unitsize;
271                 /* Cut off last packet according to the sample limit. */
272                 if (limit_samples && end_sample > limit_samples)
273                         end_sample = limit_samples;
274                 input_len = (end_sample - rcvd_samples_logic) * logic->unitsize;
275
276                 if (opt_pds) {
277 #ifdef HAVE_SRD
278                         if (srd_session_send(srd_sess, rcvd_samples_logic, end_sample,
279                                         logic->data, input_len, logic->unitsize) != SRD_OK)
280                                 sr_session_stop(session);
281 #endif
282                 }
283
284                 rcvd_samples_logic = end_sample;
285                 break;
286
287         case SR_DF_ANALOG:
288                 analog = packet->payload;
289                 g_message("cli: Received SR_DF_ANALOG (%d samples).", analog->num_samples);
290                 if (analog->num_samples == 0)
291                         break;
292
293                 if (limit_samples && rcvd_samples_analog >= limit_samples)
294                         break;
295
296                 rcvd_samples_analog += analog->num_samples;
297                 break;
298
299         case SR_DF_FRAME_BEGIN:
300                 g_debug("cli: Received SR_DF_FRAME_BEGIN.");
301                 break;
302
303         case SR_DF_FRAME_END:
304                 g_debug("cli: Received SR_DF_FRAME_END.");
305                 break;
306
307         default:
308                 break;
309         }
310
311         if (o && !opt_pds) {
312                 if (sr_output_send(o, packet, &out) == SR_OK) {
313                         if (oa && !out) {
314                                 /*
315                                  * The user didn't specify an output module,
316                                  * but needs to see this analog data.
317                                  */
318                                 sr_output_send(oa, packet, &out);
319                         }
320                         if (outfile && out && out->len > 0) {
321                                 fwrite(out->str, 1, out->len, outfile);
322                                 fflush(outfile);
323                         }
324                         if (out)
325                                 g_string_free(out, TRUE);
326                 }
327         }
328
329         /*
330          * SR_DF_END needs to be handled after the output module's receive()
331          * is called, so it can properly clean up that module.
332          */
333         if (packet->type == SR_DF_END) {
334                 g_debug("cli: Received SR_DF_END.");
335
336                 if (o)
337                         sr_output_free(o);
338                 o = NULL;
339
340                 if (oa)
341                         sr_output_free(oa);
342                 oa = NULL;
343
344                 if (outfile && outfile != stdout)
345                         fclose(outfile);
346
347                 if (limit_samples) {
348                         if (rcvd_samples_logic > 0 && rcvd_samples_logic < limit_samples)
349                                 g_warning("Device only sent %" PRIu64 " samples.",
350                                            rcvd_samples_logic);
351                         else if (rcvd_samples_analog > 0 && rcvd_samples_analog < limit_samples)
352                                 g_warning("Device only sent %" PRIu64 " samples.",
353                                            rcvd_samples_analog);
354                 }
355         }
356
357 }
358
359 int opt_to_gvar(char *key, char *value, struct sr_config *src)
360 {
361         const struct sr_key_info *srci, *srmqi;
362         double tmp_double, dlow, dhigh;
363         uint64_t tmp_u64, p, q, low, high, mqflags;
364         uint32_t mq;
365         GVariant *rational[2], *range[2], *gtup[2];
366         GVariantBuilder *vbl;
367         gboolean tmp_bool;
368         gchar **keyval;
369         int ret, i;
370
371         if (!(srci = sr_key_info_name_get(SR_KEY_CONFIG, key))) {
372                 g_critical("Unknown device option '%s'.", (char *) key);
373                 return -1;
374         }
375         src->key = srci->key;
376
377         if ((!value || strlen(value) == 0) &&
378                 (srci->datatype != SR_T_BOOL)) {
379                 g_critical("Option '%s' needs a value.", (char *)key);
380                 return -1;
381         }
382
383         ret = 0;
384         switch (srci->datatype) {
385         case SR_T_UINT64:
386                 ret = sr_parse_sizestring(value, &tmp_u64);
387                 if (ret != 0)
388                         break;
389                 src->data = g_variant_new_uint64(tmp_u64);
390                 break;
391         case SR_T_INT32:
392                 ret = sr_parse_sizestring(value, &tmp_u64);
393                 if (ret != 0)
394                         break;
395                 src->data = g_variant_new_int32(tmp_u64);
396                 break;
397         case SR_T_STRING:
398                 src->data = g_variant_new_string(value);
399                 break;
400         case SR_T_BOOL:
401                 if (!value)
402                         tmp_bool = TRUE;
403                 else
404                         tmp_bool = sr_parse_boolstring(value);
405                 src->data = g_variant_new_boolean(tmp_bool);
406                 break;
407         case SR_T_FLOAT:
408                 tmp_double = strtof(value, NULL);
409                 src->data = g_variant_new_double(tmp_double);
410                 break;
411         case SR_T_RATIONAL_PERIOD:
412                 if ((ret = sr_parse_period(value, &p, &q)) != SR_OK)
413                         break;
414                 rational[0] = g_variant_new_uint64(p);
415                 rational[1] = g_variant_new_uint64(q);
416                 src->data = g_variant_new_tuple(rational, 2);
417                 break;
418         case SR_T_RATIONAL_VOLT:
419                 if ((ret = sr_parse_voltage(value, &p, &q)) != SR_OK)
420                         break;
421                 rational[0] = g_variant_new_uint64(p);
422                 rational[1] = g_variant_new_uint64(q);
423                 src->data = g_variant_new_tuple(rational, 2);
424                 break;
425         case SR_T_UINT64_RANGE:
426                 if (sscanf(value, "%"PRIu64"-%"PRIu64, &low, &high) != 2) {
427                         ret = -1;
428                         break;
429                 } else {
430                         range[0] = g_variant_new_uint64(low);
431                         range[1] = g_variant_new_uint64(high);
432                         src->data = g_variant_new_tuple(range, 2);
433                 }
434                 break;
435         case SR_T_DOUBLE_RANGE:
436                 if (sscanf(value, "%lf-%lf", &dlow, &dhigh) != 2) {
437                         ret = -1;
438                         break;
439                 } else {
440                         range[0] = g_variant_new_double(dlow);
441                         range[1] = g_variant_new_double(dhigh);
442                         src->data = g_variant_new_tuple(range, 2);
443                 }
444                 break;
445         case SR_T_KEYVALUE:
446                 /* Expects the argument to be in the form of key=value. */
447                 keyval = g_strsplit(value, "=", 2);
448                 if (!keyval[0] || !keyval[1]) {
449                         g_strfreev(keyval);
450                         ret = -1;
451                         break;
452                 } else {
453                         vbl = g_variant_builder_new(G_VARIANT_TYPE_DICTIONARY);
454                         g_variant_builder_add(vbl, "{ss}",
455                                               keyval[0], keyval[1]);
456                         src->data = g_variant_builder_end(vbl);
457                         g_strfreev(keyval);
458                 }
459                 break;
460         case SR_T_MQ:
461                 /*
462                   Argument is MQ id e.g. ("voltage") optionally followed by one
463                   or more /<mqflag> e.g. "/ac".
464                  */
465                 keyval = g_strsplit(value, "/", 0);
466                 if (!keyval[0] || !(srmqi = sr_key_info_name_get(SR_KEY_MQ, keyval[0]))) {
467                         g_strfreev(keyval);
468                         ret = -1;
469                         break;
470                 }
471                 mq = srmqi->key;
472                 mqflags = 0;
473                 for (i = 1; keyval[i]; i++) {
474                         if (!(srmqi = sr_key_info_name_get(SR_KEY_MQFLAGS, keyval[i]))) {
475                                 ret = -1;
476                                 break;
477                         }
478                         mqflags |= srmqi->key;
479                 }
480                 g_strfreev(keyval);
481                 if (ret != -1) {
482                         gtup[0] = g_variant_new_uint32(mq);
483                         gtup[1] = g_variant_new_uint64(mqflags);
484                         src->data = g_variant_new_tuple(gtup, 2);
485                 }
486                 break;
487         default:
488                 g_critical("Unknown data type specified for option '%s' "
489                            "(driver implementation bug?).", key);
490                 ret = -1;
491         }
492
493         if (ret < 0)
494                 g_critical("Invalid value: '%s' for option '%s'", value, key);
495
496         return ret;
497 }
498
499 int set_dev_options(struct sr_dev_inst *sdi, GHashTable *args)
500 {
501         struct sr_config src;
502         struct sr_channel_group *cg;
503         GHashTableIter iter;
504         gpointer key, value;
505         int ret;
506
507         g_hash_table_iter_init(&iter, args);
508         while (g_hash_table_iter_next(&iter, &key, &value)) {
509                 if ((ret = opt_to_gvar(key, value, &src)) != 0)
510                         return ret;
511                 cg = select_channel_group(sdi);
512                 if ((ret = maybe_config_set(sr_dev_inst_driver_get(sdi), sdi, cg,
513                                 src.key, src.data)) != SR_OK) {
514                         g_critical("Failed to set device option '%s': %s.",
515                                    (char *)key, sr_strerror(ret));
516                         return ret;
517                 }
518         }
519
520         return SR_OK;
521 }
522
523 void run_session(void)
524 {
525         GSList *devices, *real_devices, *sd;
526         GHashTable *devargs;
527         GVariant *gvar;
528         struct sr_session *session;
529         struct sr_trigger *trigger;
530         struct sr_dev_inst *sdi;
531         uint64_t min_samples, max_samples;
532         GArray *drv_opts;
533         guint i;
534         int is_demo_dev;
535         struct sr_dev_driver *driver;
536         const struct sr_transform *t;
537         GMainLoop *main_loop;
538
539         devices = device_scan();
540         if (!devices) {
541                 g_critical("No devices found.");
542                 return;
543         }
544
545         real_devices = NULL;
546         for (sd = devices; sd; sd = sd->next) {
547                 sdi = sd->data;
548
549                 driver = sr_dev_inst_driver_get(sdi);
550
551                 if (!(drv_opts = sr_dev_options(driver, NULL, NULL))) {
552                         g_critical("Failed to query list of driver options.");
553                         return;
554                 }
555
556                 is_demo_dev = 0;
557                 for (i = 0; i < drv_opts->len; i++) {
558                         if (g_array_index(drv_opts, uint32_t, i) == SR_CONF_DEMO_DEV)
559                                 is_demo_dev = 1;
560                 }
561
562                 g_array_free(drv_opts, TRUE);
563
564                 if (!is_demo_dev)
565                         real_devices = g_slist_append(real_devices, sdi);
566         }
567
568         if (g_slist_length(devices) > 1) {
569                 if (g_slist_length(real_devices) != 1) {
570                         g_critical("sigrok-cli only supports one device for capturing.");
571                         return;
572                 } else {
573                         /* We only have one non-demo device. */
574                         g_slist_free(devices);
575                         devices = real_devices;
576                         real_devices = NULL;
577                 }
578         }
579
580         /* This is unlikely to happen but it makes static analyzers stop complaining. */
581         if (!devices) {
582                 g_critical("No real devices found.");
583                 return;
584         }
585
586         sdi = devices->data;
587         g_slist_free(devices);
588         g_slist_free(real_devices);
589
590         sr_session_new(sr_ctx, &session);
591         sr_session_datafeed_callback_add(session, datafeed_in, session);
592
593         if (sr_dev_open(sdi) != SR_OK) {
594                 g_critical("Failed to open device.");
595                 return;
596         }
597
598         if (sr_session_dev_add(session, sdi) != SR_OK) {
599                 g_critical("Failed to add device to session.");
600                 sr_session_destroy(session);
601                 return;
602         }
603
604         if (opt_config) {
605                 if ((devargs = parse_generic_arg(opt_config, FALSE))) {
606                         if (set_dev_options(sdi, devargs) != SR_OK)
607                                 return;
608                         g_hash_table_destroy(devargs);
609                 }
610         }
611
612         if (select_channels(sdi) != SR_OK) {
613                 g_critical("Failed to set channels.");
614                 sr_session_destroy(session);
615                 return;
616         }
617
618         trigger = NULL;
619         if (opt_triggers) {
620                 if (!parse_triggerstring(sdi, opt_triggers, &trigger)) {
621                         sr_session_destroy(session);
622                         return;
623                 }
624                 if (sr_session_trigger_set(session, trigger) != SR_OK) {
625                         sr_session_destroy(session);
626                         return;
627                 }
628         }
629
630         if (opt_continuous) {
631                 if (!sr_dev_has_option(sdi, SR_CONF_CONTINUOUS)) {
632                         g_critical("This device does not support continuous sampling.");
633                         sr_session_destroy(session);
634                         return;
635                 }
636         }
637
638         if (opt_time) {
639                 if (set_limit_time(sdi) != SR_OK) {
640                         sr_session_destroy(session);
641                         return;
642                 }
643         }
644
645         if (opt_samples) {
646                 if ((sr_parse_sizestring(opt_samples, &limit_samples) != SR_OK)) {
647                         g_critical("Invalid sample limit '%s'.", opt_samples);
648                         sr_session_destroy(session);
649                         return;
650                 }
651                 if (maybe_config_list(driver, sdi, NULL, SR_CONF_LIMIT_SAMPLES,
652                                 &gvar) == SR_OK) {
653                         /*
654                          * The device has no compression, or compression is turned
655                          * off, and publishes its sample memory size.
656                          */
657                         g_variant_get(gvar, "(tt)", &min_samples, &max_samples);
658                         g_variant_unref(gvar);
659                         if (limit_samples < min_samples) {
660                                 g_critical("The device stores at least %"PRIu64
661                                                 " samples with the current settings.", min_samples);
662                         }
663                         if (limit_samples > max_samples) {
664                                 g_critical("The device can store only %"PRIu64
665                                                 " samples with the current settings.", max_samples);
666                         }
667                 }
668                 gvar = g_variant_new_uint64(limit_samples);
669                 if (maybe_config_set(sr_dev_inst_driver_get(sdi), sdi, NULL, SR_CONF_LIMIT_SAMPLES, gvar) != SR_OK) {
670                         g_critical("Failed to configure sample limit.");
671                         sr_session_destroy(session);
672                         return;
673                 }
674         }
675
676         if (opt_frames) {
677                 if ((sr_parse_sizestring(opt_frames, &limit_frames) != SR_OK)) {
678                         g_critical("Invalid frame limit '%s'.", opt_frames);
679                         sr_session_destroy(session);
680                         return;
681                 }
682                 gvar = g_variant_new_uint64(limit_frames);
683                 if (maybe_config_set(sr_dev_inst_driver_get(sdi), sdi, NULL, SR_CONF_LIMIT_FRAMES, gvar) != SR_OK) {
684                         g_critical("Failed to configure frame limit.");
685                         sr_session_destroy(session);
686                         return;
687                 }
688         }
689
690         if (opt_transform_module) {
691                 if (!(t = setup_transform_module(sdi)))
692                         g_critical("Failed to initialize transform module.");
693         }
694
695         main_loop = g_main_loop_new(NULL, FALSE);
696
697         sr_session_stopped_callback_set(session,
698                 (sr_session_stopped_callback)g_main_loop_quit, main_loop);
699
700         if (sr_session_start(session) != SR_OK) {
701                 g_critical("Failed to start session.");
702                 g_main_loop_unref(main_loop);
703                 sr_session_destroy(session);
704                 return;
705         }
706
707         if (opt_continuous)
708                 add_anykey(session);
709
710         g_main_loop_run(main_loop);
711
712         if (opt_continuous)
713                 clear_anykey();
714
715         if (trigger)
716                 sr_trigger_free(trigger);
717
718         sr_session_datafeed_callback_remove_all(session);
719         g_main_loop_unref(main_loop);
720         sr_session_destroy(session);
721 }