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