6e101784606dc4d168a824be891f48413ceffb33
[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 <glib.h>
21 #include <glib/gstdio.h>
22 #include <string.h>
23 #include <stdlib.h>
24 #include "sigrok-cli.h"
25
26 static uint64_t limit_samples = 0;
27 static uint64_t limit_frames = 0;
28
29 #ifdef HAVE_SRD
30 extern struct srd_session *srd_sess;
31 #endif
32
33 static int set_limit_time(const struct sr_dev_inst *sdi)
34 {
35         GVariant *gvar;
36         uint64_t time_msec;
37         uint64_t samplerate;
38         struct sr_dev_driver *driver;
39
40         driver = sr_dev_inst_driver_get(sdi);
41
42         if (!(time_msec = sr_parse_timestring(opt_time))) {
43                 g_critical("Invalid time '%s'", opt_time);
44                 return SR_ERR;
45         }
46
47         if (config_key_has_cap(driver, sdi, NULL, SR_CONF_LIMIT_MSEC, SR_CONF_SET)) {
48                 gvar = g_variant_new_uint64(time_msec);
49                 if (sr_config_set(sdi, NULL, SR_CONF_LIMIT_MSEC, gvar) != SR_OK) {
50                         g_critical("Failed to configure time limit.");
51                         return SR_ERR;
52                 }
53         } else if (config_key_has_cap(driver, sdi, NULL, SR_CONF_SAMPLERATE,
54                         SR_CONF_GET | SR_CONF_SET)) {
55                 /* Convert to samples based on the samplerate. */
56                 sr_config_get(driver, sdi, NULL, SR_CONF_SAMPLERATE, &gvar);
57                 samplerate = g_variant_get_uint64(gvar);
58                 g_variant_unref(gvar);
59                 limit_samples = (samplerate) * time_msec / (uint64_t)1000;
60                 if (limit_samples == 0) {
61                         g_critical("Not enough time at this samplerate.");
62                         return SR_ERR;
63                 }
64                 gvar = g_variant_new_uint64(limit_samples);
65                 if (sr_config_set(sdi, NULL, SR_CONF_LIMIT_SAMPLES, gvar) != SR_OK) {
66                         g_critical("Failed to configure time-based sample limit.");
67                         return SR_ERR;
68                 }
69         } else {
70                 g_critical("This device does not support time limits.");
71                 return SR_ERR;
72         }
73
74         return SR_OK;
75 }
76
77 const struct sr_output *setup_output_format(const struct sr_dev_inst *sdi, FILE **outfile)
78 {
79         const struct sr_output_module *omod;
80         const struct sr_option **options;
81         const struct sr_output *o;
82         GHashTable *fmtargs, *fmtopts;
83         char *fmtspec;
84
85         if (!opt_output_format) {
86                 if (opt_output_file) {
87                         opt_output_format = DEFAULT_OUTPUT_FORMAT_FILE;
88                 } else {
89                         opt_output_format = DEFAULT_OUTPUT_FORMAT_NOFILE;
90                 }
91         }
92
93         fmtargs = parse_generic_arg(opt_output_format, TRUE);
94         fmtspec = g_hash_table_lookup(fmtargs, "sigrok_key");
95         if (!fmtspec)
96                 g_critical("Invalid output format.");
97         if (!(omod = sr_output_find(fmtspec)))
98                 g_critical("Unknown output module '%s'.", fmtspec);
99         g_hash_table_remove(fmtargs, "sigrok_key");
100         if ((options = sr_output_options_get(omod))) {
101                 fmtopts = generic_arg_to_opt(options, fmtargs);
102                 sr_output_options_free(options);
103         } else
104                 fmtopts = NULL;
105         o = sr_output_new(omod, fmtopts, sdi, opt_output_file);
106
107         if (opt_output_file) {
108                 if (!sr_output_test_flag(omod, SR_OUTPUT_INTERNAL_IO_HANDLING))
109                         *outfile = g_fopen(opt_output_file, "wb");
110                 else
111                         *outfile = NULL;
112         } else {
113                 *outfile = stdout;
114         }
115
116         if (fmtopts)
117                 g_hash_table_destroy(fmtopts);
118         g_hash_table_destroy(fmtargs);
119
120         return o;
121 }
122
123 const struct sr_transform *setup_transform_module(const struct sr_dev_inst *sdi)
124 {
125         const struct sr_transform_module *tmod;
126         const struct sr_option **options;
127         const struct sr_transform *t;
128         GHashTable *fmtargs, *fmtopts;
129         char *fmtspec;
130
131         if (!opt_transform_module)
132                 opt_transform_module = "nop";
133
134         fmtargs = parse_generic_arg(opt_transform_module, TRUE);
135         fmtspec = g_hash_table_lookup(fmtargs, "sigrok_key");
136         if (!fmtspec)
137                 g_critical("Invalid transform module.");
138         if (!(tmod = sr_transform_find(fmtspec)))
139                 g_critical("Unknown transform module '%s'.", fmtspec);
140         g_hash_table_remove(fmtargs, "sigrok_key");
141         if ((options = sr_transform_options_get(tmod))) {
142                 fmtopts = generic_arg_to_opt(options, fmtargs);
143                 sr_transform_options_free(options);
144         } else
145                 fmtopts = NULL;
146         t = sr_transform_new(tmod, fmtopts, sdi);
147         if (fmtopts)
148                 g_hash_table_destroy(fmtopts);
149         g_hash_table_destroy(fmtargs);
150
151         return t;
152 }
153
154 void datafeed_in(const struct sr_dev_inst *sdi,
155                 const struct sr_datafeed_packet *packet, void *cb_data)
156 {
157         const struct sr_datafeed_meta *meta;
158         const struct sr_datafeed_logic *logic;
159         const struct sr_datafeed_analog *analog;
160         struct sr_session *session;
161         struct sr_config *src;
162         static const struct sr_output *o = NULL;
163         static const struct sr_output *oa = NULL;
164         static uint64_t rcvd_samples_logic = 0;
165         static uint64_t rcvd_samples_analog = 0;
166         static uint64_t samplerate = 0;
167         static int triggered = 0;
168         static FILE *outfile = NULL;
169         GSList *l;
170         GString *out;
171         GVariant *gvar;
172         uint64_t end_sample;
173         uint64_t input_len;
174         struct sr_dev_driver *driver;
175
176         driver = sr_dev_inst_driver_get(sdi);
177
178         /* If the first packet to come in isn't a header, don't even try. */
179         if (packet->type != SR_DF_HEADER && !o)
180                 return;
181
182         session = cb_data;
183         switch (packet->type) {
184         case SR_DF_HEADER:
185                 g_debug("cli: Received SR_DF_HEADER.");
186                 if (!(o = setup_output_format(sdi, &outfile)))
187                         g_critical("Failed to initialize output module.");
188
189                 /* Set up backup analog output module. */
190                 oa = sr_output_new(sr_output_find("analog"), NULL, sdi, NULL);
191
192                 rcvd_samples_logic = rcvd_samples_analog = 0;
193
194                 if (maybe_config_get(driver, sdi, NULL, SR_CONF_SAMPLERATE,
195                                 &gvar) == SR_OK) {
196                         samplerate = g_variant_get_uint64(gvar);
197                         g_variant_unref(gvar);
198                 }
199
200 #ifdef HAVE_SRD
201                 if (opt_pds) {
202                         if (samplerate) {
203                                 if (srd_session_metadata_set(srd_sess, SRD_CONF_SAMPLERATE,
204                                                 g_variant_new_uint64(samplerate)) != SRD_OK) {
205                                         g_critical("Failed to configure decode session.");
206                                         break;
207                                 }
208                         }
209                         if (srd_session_start(srd_sess) != SRD_OK) {
210                                 g_critical("Failed to start decode session.");
211                                 break;
212                         }
213                 }
214 #endif
215                 break;
216
217         case SR_DF_META:
218                 g_debug("cli: Received SR_DF_META.");
219                 meta = packet->payload;
220                 for (l = meta->config; l; l = l->next) {
221                         src = l->data;
222                         switch (src->key) {
223                         case SR_CONF_SAMPLERATE:
224                                 samplerate = g_variant_get_uint64(src->data);
225                                 g_debug("cli: Got samplerate %"PRIu64" Hz.", samplerate);
226 #ifdef HAVE_SRD
227                                 if (opt_pds) {
228                                         if (srd_session_metadata_set(srd_sess, SRD_CONF_SAMPLERATE,
229                                                         g_variant_new_uint64(samplerate)) != SRD_OK) {
230                                                 g_critical("Failed to pass samplerate to decoder.");
231                                         }
232                                 }
233 #endif
234                                 break;
235                         case SR_CONF_SAMPLE_INTERVAL:
236                                 samplerate = g_variant_get_uint64(src->data);
237                                 g_debug("cli: Got sample interval %"PRIu64" ms.", samplerate);
238                                 break;
239                         default:
240                                 /* Unknown metadata is not an error. */
241                                 break;
242                         }
243                 }
244                 break;
245
246         case SR_DF_TRIGGER:
247                 g_debug("cli: Received SR_DF_TRIGGER.");
248                 triggered = 1;
249                 break;
250
251         case SR_DF_LOGIC:
252                 logic = packet->payload;
253                 g_message("cli: Received SR_DF_LOGIC (%"PRIu64" bytes, unitsize = %d).",
254                                 logic->length, logic->unitsize);
255                 if (logic->length == 0)
256                         break;
257
258                 /* Don't store any samples until triggered. */
259                 if (opt_wait_trigger && !triggered)
260                         break;
261
262                 if (limit_samples && rcvd_samples_logic >= limit_samples)
263                         break;
264
265                 end_sample = rcvd_samples_logic + logic->length / logic->unitsize;
266                 /* Cut off last packet according to the sample limit. */
267                 if (limit_samples && end_sample > limit_samples)
268                         end_sample = limit_samples;
269                 input_len = (end_sample - rcvd_samples_logic) * logic->unitsize;
270
271                 if (opt_pds) {
272 #ifdef HAVE_SRD
273                         if (srd_session_send(srd_sess, rcvd_samples_logic, end_sample,
274                                         logic->data, input_len, logic->unitsize) != SRD_OK)
275                                 sr_session_stop(session);
276 #endif
277                 }
278
279                 rcvd_samples_logic = end_sample;
280                 break;
281
282         case SR_DF_ANALOG:
283                 analog = packet->payload;
284                 g_message("cli: Received SR_DF_ANALOG (%d samples).", analog->num_samples);
285                 if (analog->num_samples == 0)
286                         break;
287
288                 if (limit_samples && rcvd_samples_analog >= limit_samples)
289                         break;
290
291                 rcvd_samples_analog += analog->num_samples;
292                 break;
293
294         case SR_DF_FRAME_BEGIN:
295                 g_debug("cli: Received SR_DF_FRAME_BEGIN.");
296                 break;
297
298         case SR_DF_FRAME_END:
299                 g_debug("cli: Received SR_DF_FRAME_END.");
300                 break;
301
302         default:
303                 break;
304         }
305
306         if (o && !opt_pds) {
307                 if (sr_output_send(o, packet, &out) == SR_OK) {
308                         if (!out || (out->len == 0
309                                         && !opt_output_format
310                                         && packet->type == SR_DF_ANALOG)) {
311                                 /*
312                                  * The user didn't specify an output module,
313                                  * but needs to see this analog data.
314                                  */
315                                 sr_output_send(oa, packet, &out);
316                         }
317                         if (outfile && out && out->len > 0) {
318                                 fwrite(out->str, 1, out->len, outfile);
319                                 fflush(outfile);
320                         }
321                         if (out)
322                                 g_string_free(out, TRUE);
323                 }
324         }
325
326         /*
327          * SR_DF_END needs to be handled after the output module's receive()
328          * is called, so it can properly clean up that module.
329          */
330         if (packet->type == SR_DF_END) {
331                 g_debug("cli: Received SR_DF_END.");
332
333                 if (o)
334                         sr_output_free(o);
335                 o = NULL;
336
337                 sr_output_free(oa);
338                 oa = NULL;
339
340                 if (outfile && outfile != stdout)
341                         fclose(outfile);
342
343                 if (limit_samples) {
344                         if (rcvd_samples_logic > 0 && rcvd_samples_logic < limit_samples)
345                                 g_warning("Device only sent %" PRIu64 " samples.",
346                                            rcvd_samples_logic);
347                         else if (rcvd_samples_analog > 0 && rcvd_samples_analog < limit_samples)
348                                 g_warning("Device only sent %" PRIu64 " samples.",
349                                            rcvd_samples_analog);
350                 }
351         }
352
353 }
354
355 int opt_to_gvar(char *key, char *value, struct sr_config *src)
356 {
357         const struct sr_key_info *srci, *srmqi;
358         double tmp_double, dlow, dhigh;
359         uint64_t tmp_u64, p, q, low, high, mqflags;
360         uint32_t mq;
361         GVariant *rational[2], *range[2], *gvar, *gtup[2];
362         GVariantBuilder *vbl;
363         gboolean tmp_bool;
364         gchar **keyval;
365         int ret, i;
366
367         if (!(srci = sr_key_info_name_get(SR_KEY_CONFIG, key))) {
368                 g_critical("Unknown device option '%s'.", (char *) key);
369                 return -1;
370         }
371         src->key = srci->key;
372
373         if ((!value || strlen(value) == 0) &&
374                 (srci->datatype != SR_T_BOOL)) {
375                 g_critical("Option '%s' needs a value.", (char *)key);
376                 return -1;
377         }
378
379         ret = 0;
380         switch (srci->datatype) {
381         case SR_T_UINT64:
382                 ret = sr_parse_sizestring(value, &tmp_u64);
383                 if (ret != 0)
384                         break;
385                 src->data = g_variant_new_uint64(tmp_u64);
386                 break;
387         case SR_T_INT32:
388                 ret = sr_parse_sizestring(value, &tmp_u64);
389                 if (ret != 0)
390                         break;
391                 src->data = g_variant_new_int32(tmp_u64);
392                 break;
393         case SR_T_STRING:
394                 src->data = g_variant_new_string(value);
395                 break;
396         case SR_T_BOOL:
397                 if (!value)
398                         tmp_bool = TRUE;
399                 else
400                         tmp_bool = sr_parse_boolstring(value);
401                 src->data = g_variant_new_boolean(tmp_bool);
402                 break;
403         case SR_T_FLOAT:
404                 tmp_double = strtof(value, NULL);
405                 src->data = g_variant_new_double(tmp_double);
406                 break;
407         case SR_T_RATIONAL_PERIOD:
408                 if ((ret = sr_parse_period(value, &p, &q)) != SR_OK)
409                         break;
410                 rational[0] = g_variant_new_uint64(p);
411                 rational[1] = g_variant_new_uint64(q);
412                 src->data = g_variant_new_tuple(rational, 2);
413                 break;
414         case SR_T_RATIONAL_VOLT:
415                 if ((ret = sr_parse_voltage(value, &p, &q)) != SR_OK)
416                         break;
417                 rational[0] = g_variant_new_uint64(p);
418                 rational[1] = g_variant_new_uint64(q);
419                 src->data = g_variant_new_tuple(rational, 2);
420                 break;
421         case SR_T_UINT64_RANGE:
422                 if (sscanf(value, "%"PRIu64"-%"PRIu64, &low, &high) != 2) {
423                         ret = -1;
424                         break;
425                 } else {
426                         range[0] = g_variant_new_uint64(low);
427                         range[1] = g_variant_new_uint64(high);
428                         src->data = g_variant_new_tuple(range, 2);
429                 }
430                 break;
431         case SR_T_DOUBLE_RANGE:
432                 if (sscanf(value, "%lf-%lf", &dlow, &dhigh) != 2) {
433                         ret = -1;
434                         break;
435                 } else {
436                         range[0] = g_variant_new_double(dlow);
437                         range[1] = g_variant_new_double(dhigh);
438                         src->data = g_variant_new_tuple(range, 2);
439                 }
440                 break;
441         case SR_T_KEYVALUE:
442                 /* Expects the argument to be in the form of key=value. */
443                 keyval = g_strsplit(value, "=", 2);
444                 if (!keyval[0] || !keyval[1]) {
445                         g_strfreev(keyval);
446                         ret = -1;
447                         break;
448                 } else {
449                         vbl = g_variant_builder_new(G_VARIANT_TYPE_DICTIONARY);
450                         g_variant_builder_add(vbl, "{ss}",
451                                               keyval[0], keyval[1]);
452                         src->data = g_variant_builder_end(vbl);
453                         g_strfreev(keyval);
454                 }
455                 break;
456         case SR_T_MQLIST:
457                 /*
458                   Argument is MQ id e.g. ("voltage") optionally followed by one
459                   or more /<mqflag> e.g. "/ac".
460                  */
461                 keyval = g_strsplit(value, "/", 0);
462                 if (!keyval[0] || !(srmqi = sr_key_info_name_get(SR_KEY_MQ, keyval[0]))) {
463                         g_strfreev(keyval);
464                         ret = -1;
465                         break;
466                 }
467                 mq = srmqi->key;
468                 mqflags = 0;
469                 for (i = 1; keyval[i]; i++) {
470                         if (!(srmqi = sr_key_info_name_get(SR_KEY_MQFLAGS, keyval[i]))) {
471                                 ret = -1;
472                                 break;
473                         }
474                         mqflags |= srmqi->key;
475                 }
476                 g_strfreev(keyval);
477                 if (ret != -1) {
478                         vbl = g_variant_builder_new(G_VARIANT_TYPE_ARRAY);
479                         gtup[0] = g_variant_new_uint32(mq);
480                         gtup[1] = g_variant_new_uint64(mqflags);
481                         gvar = g_variant_new_tuple(gtup, 2);
482                         g_variant_builder_add_value(vbl, gvar);
483                         src->data = g_variant_builder_end(vbl);
484                 }
485                 break;
486         default:
487                 g_critical("Unknown data type specified for option '%s' "
488                            "(driver implementation bug?).", key);
489                 ret = -1;
490         }
491
492         if (ret < 0)
493                 g_critical("Invalid value: '%s' for option '%s'", value, key);
494
495         return ret;
496 }
497
498 int set_dev_options(struct sr_dev_inst *sdi, GHashTable *args)
499 {
500         struct sr_config src;
501         struct sr_channel_group *cg;
502         GHashTableIter iter;
503         gpointer key, value;
504         int ret;
505
506         g_hash_table_iter_init(&iter, args);
507         while (g_hash_table_iter_next(&iter, &key, &value)) {
508                 if ((ret = opt_to_gvar(key, value, &src)) != 0)
509                         return ret;
510                 cg = select_channel_group(sdi);
511                 if ((ret = maybe_config_set(sr_dev_inst_driver_get(sdi), sdi, cg,
512                                 src.key, src.data)) != SR_OK) {
513                         g_critical("Failed to set device option '%s': %s.",
514                                    (char *)key, sr_strerror(ret));
515                         return ret;
516                 }
517         }
518
519         return SR_OK;
520 }
521
522 void run_session(void)
523 {
524         GSList *devices, *real_devices, *sd;
525         GHashTable *devargs;
526         GVariant *gvar;
527         struct sr_session *session;
528         struct sr_trigger *trigger;
529         struct sr_dev_inst *sdi;
530         uint64_t min_samples, max_samples;
531         gsize n_elements, i;
532         const uint32_t *dev_opts;
533         int is_demo_dev;
534         struct sr_dev_driver *driver;
535         const struct sr_transform *t;
536
537         devices = device_scan();
538         if (!devices) {
539                 g_critical("No devices found.");
540                 return;
541         }
542
543         real_devices = NULL;
544         for (sd = devices; sd; sd = sd->next) {
545                 sdi = sd->data;
546
547                 driver = sr_dev_inst_driver_get(sdi);
548
549                 if (sr_config_list(driver, sdi, NULL, SR_CONF_DEVICE_OPTIONS, &gvar) != SR_OK) {
550                         g_critical("Failed to query list device options.");
551                         return;
552                 }
553
554                 dev_opts = g_variant_get_fixed_array(gvar, &n_elements, sizeof(uint32_t));
555
556                 is_demo_dev = 0;
557                 for (i = 0; i < n_elements; i++) {
558                         if (dev_opts[i] == SR_CONF_DEMO_DEV)
559                                 is_demo_dev = 1;
560                 }
561
562                 g_variant_unref(gvar);
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         sdi = devices->data;
581         g_slist_free(devices);
582         g_slist_free(real_devices);
583
584         sr_session_new(sr_ctx, &session);
585         sr_session_datafeed_callback_add(session, datafeed_in, NULL);
586
587         if (sr_dev_open(sdi) != SR_OK) {
588                 g_critical("Failed to open device.");
589                 return;
590         }
591
592         if (sr_session_dev_add(session, sdi) != SR_OK) {
593                 g_critical("Failed to add device to session.");
594                 sr_session_destroy(session);
595                 return;
596         }
597
598         if (opt_config) {
599                 if ((devargs = parse_generic_arg(opt_config, FALSE))) {
600                         if (set_dev_options(sdi, devargs) != SR_OK)
601                                 return;
602                         g_hash_table_destroy(devargs);
603                 }
604         }
605
606         if (select_channels(sdi) != SR_OK) {
607                 g_critical("Failed to set channels.");
608                 sr_session_destroy(session);
609                 return;
610         }
611
612         if (opt_triggers) {
613                 if (!parse_triggerstring(sdi, opt_triggers, &trigger)) {
614                         sr_session_destroy(session);
615                         return;
616                 }
617                 if (sr_session_trigger_set(session, trigger) != SR_OK) {
618                         sr_session_destroy(session);
619                         return;
620                 }
621         }
622
623         if (opt_continuous) {
624                 if (!sr_dev_has_option(sdi, SR_CONF_CONTINUOUS)) {
625                         g_critical("This device does not support continuous sampling.");
626                         sr_session_destroy(session);
627                         return;
628                 }
629         }
630
631         if (opt_time) {
632                 if (set_limit_time(sdi) != SR_OK) {
633                         sr_session_destroy(session);
634                         return;
635                 }
636         }
637
638         if (opt_samples) {
639                 if ((sr_parse_sizestring(opt_samples, &limit_samples) != SR_OK)) {
640                         g_critical("Invalid sample limit '%s'.", opt_samples);
641                         sr_session_destroy(session);
642                         return;
643                 }
644                 if (maybe_config_list(driver, sdi, NULL, SR_CONF_LIMIT_SAMPLES,
645                                 &gvar) == SR_OK) {
646                         /*
647                          * The device has no compression, or compression is turned
648                          * off, and publishes its sample memory size.
649                          */
650                         g_variant_get(gvar, "(tt)", &min_samples, &max_samples);
651                         g_variant_unref(gvar);
652                         if (limit_samples < min_samples) {
653                                 g_critical("The device stores at least %"PRIu64
654                                                 " samples with the current settings.", min_samples);
655                         }
656                         if (limit_samples > max_samples) {
657                                 g_critical("The device can store only %"PRIu64
658                                                 " samples with the current settings.", max_samples);
659                         }
660                 }
661                 gvar = g_variant_new_uint64(limit_samples);
662                 if (maybe_config_set(sr_dev_inst_driver_get(sdi), sdi, NULL, SR_CONF_LIMIT_SAMPLES, gvar) != SR_OK) {
663                         g_critical("Failed to configure sample limit.");
664                         sr_session_destroy(session);
665                         return;
666                 }
667         }
668
669         if (opt_frames) {
670                 if ((sr_parse_sizestring(opt_frames, &limit_frames) != SR_OK)) {
671                         g_critical("Invalid sample limit '%s'.", opt_samples);
672                         sr_session_destroy(session);
673                         return;
674                 }
675                 gvar = g_variant_new_uint64(limit_frames);
676                 if (maybe_config_set(sr_dev_inst_driver_get(sdi), sdi, NULL, SR_CONF_LIMIT_FRAMES, gvar) != SR_OK) {
677                         g_critical("Failed to configure frame limit.");
678                         sr_session_destroy(session);
679                         return;
680                 }
681         }
682
683         if (!(t = setup_transform_module(sdi)))
684                 g_critical("Failed to initialize transform module.");
685
686         if (sr_session_start(session) != SR_OK) {
687                 g_critical("Failed to start session.");
688                 sr_session_destroy(session);
689                 return;
690         }
691
692         if (opt_continuous)
693                 add_anykey(session);
694
695         sr_session_run(session);
696
697         if (opt_continuous)
698                 clear_anykey();
699
700         sr_session_datafeed_callback_remove_all(session);
701         sr_session_destroy(session);
702
703 }