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 "sigrok-cli.h"
  21 #include "config.h"
  22 #include <glib.h>
  23 #include <glib/gstdio.h>
  24
  25 static struct sr_output_format *output_format = NULL;
  26 static int default_output_format = FALSE;
  27 static char *output_format_param = NULL;
  28 static GByteArray *savebuf;
  29 static uint64_t limit_samples = 0;
  30 static uint64_t limit_frames = 0;
  31
  32 extern gchar *opt_output_file;
  33 extern gchar *opt_output_format;
  34 extern gchar *opt_pds;
  35 extern gboolean opt_wait_trigger;
  36 extern gchar *opt_time;
  37 extern gchar *opt_samples;
  38 extern gchar *opt_frames;
  39 extern gchar *opt_continuous;
  40 extern gchar *opt_config;
  41 extern gchar *opt_triggers;
  42 #ifdef HAVE_SRD
  43 extern struct srd_session *srd_sess;
  44 #endif
  45
  46
  47 static GArray *get_enabled_logic_probes(const struct sr_dev_inst *sdi)
  48 {
  49         struct sr_probe *probe;
  50         GArray *probes;
  51         GSList *l;
  52
  53         probes = g_array_new(FALSE, FALSE, sizeof(int));
  54         for (l = sdi->probes; l; l = l->next) {
  55                 probe = l->data;
  56                 if (probe->type != SR_PROBE_LOGIC)
  57                         continue;
  58                 if (probe->enabled != TRUE)
  59                         continue;
  60                 g_array_append_val(probes, probe->index);
  61         }
  62
  63         return probes;
  64 }
  65
  66 static int set_limit_time(const struct sr_dev_inst *sdi)
  67 {
  68         GVariant *gvar;
  69         uint64_t time_msec;
  70         uint64_t samplerate;
  71
  72         if (!(time_msec = sr_parse_timestring(opt_time))) {
  73                 g_critical("Invalid time '%s'", opt_time);
  74                 return SR_ERR;
  75         }
  76
  77         if (sr_dev_has_option(sdi, SR_CONF_LIMIT_MSEC)) {
  78                 gvar = g_variant_new_uint64(time_msec);
  79                 if (sr_config_set(sdi, NULL, SR_CONF_LIMIT_MSEC, gvar) != SR_OK) {
  80                         g_critical("Failed to configure time limit.");
  81                         return SR_ERR;
  82                 }
  83         } else if (sr_dev_has_option(sdi, SR_CONF_SAMPLERATE)) {
  84                 /* Convert to samples based on the samplerate.  */
  85                 sr_config_get(sdi->driver, sdi, NULL, SR_CONF_SAMPLERATE, &gvar);
  86                 samplerate = g_variant_get_uint64(gvar);
  87                 g_variant_unref(gvar);
  88                 limit_samples = (samplerate) * time_msec / (uint64_t)1000;
  89                 if (limit_samples == 0) {
  90                         g_critical("Not enough time at this samplerate.");
  91                         return SR_ERR;
  92                 }
  93                 gvar = g_variant_new_uint64(limit_samples);
  94                 if (sr_config_set(sdi, NULL, SR_CONF_LIMIT_SAMPLES, gvar) != SR_OK) {
  95                         g_critical("Failed to configure time-based sample limit.");
  96                         return SR_ERR;
  97                 }
  98         } else {
  99                 g_critical("This device does not support time limits.");
 100                 return SR_ERR;
 101         }
 102
 103         return SR_OK;
 104 }
 105
 106 int setup_output_format(void)
 107 {
 108         GHashTable *fmtargs;
 109         GHashTableIter iter;
 110         gpointer key, value;
 111         struct sr_output_format **outputs;
 112         int i;
 113         char *fmtspec;
 114
 115         if (opt_output_format && !strcmp(opt_output_format, "sigrok")) {
 116                 /* Doesn't really exist as an output module - this is
 117                  * the session save mode. */
 118                 g_free(opt_output_format);
 119                 opt_output_format = NULL;
 120         }
 121
 122         if (!opt_output_format) {
 123                 opt_output_format = DEFAULT_OUTPUT_FORMAT;
 124                 /* we'll need to remember this so when saving to a file
 125                  * later, sigrok session format will be used.
 126                  */
 127                 default_output_format = TRUE;
 128         }
 129
 130         fmtargs = parse_generic_arg(opt_output_format, TRUE);
 131         fmtspec = g_hash_table_lookup(fmtargs, "sigrok_key");
 132         if (!fmtspec) {
 133                 g_critical("Invalid output format.");
 134                 return 1;
 135         }
 136         outputs = sr_output_list();
 137         for (i = 0; outputs[i]; i++) {
 138                 if (strcmp(outputs[i]->id, fmtspec))
 139                         continue;
 140                 g_hash_table_remove(fmtargs, "sigrok_key");
 141                 output_format = outputs[i];
 142                 g_hash_table_iter_init(&iter, fmtargs);
 143                 while (g_hash_table_iter_next(&iter, &key, &value)) {
 144                         /* only supporting one parameter per output module
 145                          * for now, and only its value */
 146                         output_format_param = g_strdup(value);
 147                         break;
 148                 }
 149                 break;
 150         }
 151         if (!output_format) {
 152                 g_critical("Invalid output format %s.", opt_output_format);
 153                 return 1;
 154         }
 155         g_hash_table_destroy(fmtargs);
 156
 157         return 0;
 158 }
 159
 160 void datafeed_in(const struct sr_dev_inst *sdi,
 161                 const struct sr_datafeed_packet *packet, void *cb_data)
 162 {
 163         const struct sr_datafeed_meta *meta;
 164         const struct sr_datafeed_logic *logic;
 165         const struct sr_datafeed_analog *analog;
 166         struct sr_config *src;
 167         static struct sr_output *o = NULL;
 168         static GArray *logic_probelist = NULL;
 169         static uint64_t received_samples = 0;
 170         static int unitsize = 0;
 171         static int triggered = 0;
 172         static FILE *outfile = NULL;
 173         GSList *l;
 174         GString *out;
 175         int sample_size, ret;
 176         uint64_t samplerate, output_len, filter_out_len, end_sample;
 177         uint8_t *output_buf, *filter_out;
 178
 179         (void) cb_data;
 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 == NULL)
 183                 return;
 184
 185         sample_size = -1;
 186         switch (packet->type) {
 187         case SR_DF_HEADER:
 188                 g_debug("cli: Received SR_DF_HEADER");
 189                 /* Initialize the output module. */
 190                 if (!(o = g_try_malloc(sizeof(struct sr_output)))) {
 191                         g_critical("Output module malloc failed.");
 192                         exit(1);
 193                 }
 194                 o->format = output_format;
 195                 o->sdi = (struct sr_dev_inst *)sdi;
 196                 o->param = output_format_param;
 197                 if (o->format->init) {
 198                         if (o->format->init(o) != SR_OK) {
 199                                 g_critical("Output format initialization failed.");
 200                                 exit(1);
 201                         }
 202                 }
 203
 204                 /* Prepare non-stdout output. */
 205                 outfile = stdout;
 206                 if (opt_output_file) {
 207                         if (default_output_format) {
 208                                 /* output file is in session format, so we'll
 209                                  * keep a copy of everything as it comes in
 210                                  * and save from there after the session. */
 211                                 outfile = NULL;
 212                                 savebuf = g_byte_array_new();
 213                         } else {
 214                                 /* saving to a file in whatever format was set
 215                                  * with --format, so all we need is a filehandle */
 216                                 outfile = g_fopen(opt_output_file, "wb");
 217                         }
 218                 }
 219
 220                 /* Prepare for logic data. */
 221                 logic_probelist = get_enabled_logic_probes(sdi);
 222                 /* How many bytes we need to store the packed samples. */
 223                 unitsize = (logic_probelist->len + 7) / 8;
 224
 225 #ifdef HAVE_SRD
 226                 GVariant *gvar;
 227                 if (opt_pds && logic_probelist->len) {
 228                         if (sr_config_get(sdi->driver, sdi, NULL, SR_CONF_SAMPLERATE,
 229                                         &gvar) == SR_OK) {
 230                                 samplerate = g_variant_get_uint64(gvar);
 231                                 g_variant_unref(gvar);
 232                                 if (srd_session_metadata_set(srd_sess, SRD_CONF_SAMPLERATE,
 233                                                 g_variant_new_uint64(samplerate)) != SRD_OK) {
 234                                         g_critical("Failed to configure decode session.");
 235                                         break;
 236                                 }
 237                         }
 238                         if (srd_session_start(srd_sess) != SRD_OK) {
 239                                 g_critical("Failed to start decode session.");
 240                                 break;
 241                         }
 242                 }
 243 #endif
 244                 break;
 245
 246         case SR_DF_META:
 247                 g_debug("cli: received SR_DF_META");
 248                 meta = packet->payload;
 249                 for (l = meta->config; l; l = l->next) {
 250                         src = l->data;
 251                         switch (src->key) {
 252                         case SR_CONF_SAMPLERATE:
 253                                 samplerate = g_variant_get_uint64(src->data);
 254                                 g_debug("cli: got samplerate %"PRIu64" Hz", samplerate);
 255 #ifdef HAVE_SRD
 256                                 if (opt_pds) {
 257                                         if (srd_session_metadata_set(srd_sess, SRD_CONF_SAMPLERATE,
 258                                                         g_variant_new_uint64(samplerate)) != SRD_OK) {
 259                                                 g_critical("Failed to pass samplerate to decoder.");
 260                                         }
 261                                 }
 262 #endif
 263                                 break;
 264                         case SR_CONF_SAMPLE_INTERVAL:
 265                                 samplerate = g_variant_get_uint64(src->data);
 266                                 g_debug("cli: got sample interval %"PRIu64" ms", samplerate);
 267                                 break;
 268                         default:
 269                                 /* Unknown metadata is not an error. */
 270                                 break;
 271                         }
 272                 }
 273                 break;
 274
 275         case SR_DF_TRIGGER:
 276                 g_debug("cli: received SR_DF_TRIGGER");
 277                 if (o->format->event)
 278                         o->format->event(o, SR_DF_TRIGGER, &output_buf,
 279                                          &output_len);
 280                 triggered = 1;
 281                 break;
 282
 283         case SR_DF_LOGIC:
 284                 logic = packet->payload;
 285                 g_message("cli: received SR_DF_LOGIC, %"PRIu64" bytes", logic->length);
 286                 sample_size = logic->unitsize;
 287                 if (logic->length == 0)
 288                         break;
 289
 290                 /* Don't store any samples until triggered. */
 291                 if (opt_wait_trigger && !triggered)
 292                         break;
 293
 294                 if (limit_samples && received_samples >= limit_samples)
 295                         break;
 296
 297                 ret = sr_filter_probes(sample_size, unitsize, logic_probelist,
 298                                 logic->data, logic->length,
 299                                 &filter_out, &filter_out_len);
 300                 if (ret != SR_OK)
 301                         break;
 302
 303                 /*
 304                  * What comes out of the filter is guaranteed to be packed into the
 305                  * minimum size needed to support the number of samples at this sample
 306                  * size. however, the driver may have submitted too much. Cut off
 307                  * the buffer of the last packet according to the sample limit.
 308                  */
 309                 if (limit_samples && (received_samples + logic->length / sample_size >
 310                                 limit_samples * sample_size))
 311                         filter_out_len = limit_samples * sample_size - received_samples;
 312
 313                 if (opt_output_file && default_output_format) {
 314                         /* Saving to a session file. */
 315                         g_byte_array_append(savebuf, filter_out, filter_out_len);
 316                 } else {
 317                         if (opt_pds) {
 318 #ifdef HAVE_SRD
 319                                 end_sample = received_samples + filter_out_len / unitsize;
 320                                 if (srd_session_send(srd_sess, received_samples, end_sample,
 321                                                 (uint8_t*)filter_out, filter_out_len) != SRD_OK)
 322                                         sr_session_stop();
 323 #endif
 324                         } else {
 325                                 output_len = 0;
 326                                 if (o->format->data && packet->type == o->format->df_type)
 327                                         o->format->data(o, filter_out, filter_out_len,
 328                                                         &output_buf, &output_len);
 329                                 if (output_len) {
 330                                         fwrite(output_buf, 1, output_len, outfile);
 331                                         fflush(outfile);
 332                                         g_free(output_buf);
 333                                 }
 334                         }
 335                 }
 336                 g_free(filter_out);
 337
 338                 received_samples += logic->length / sample_size;
 339                 break;
 340
 341         case SR_DF_ANALOG:
 342                 analog = packet->payload;
 343                 g_message("cli: received SR_DF_ANALOG, %d samples", analog->num_samples);
 344                 if (analog->num_samples == 0)
 345                         break;
 346
 347                 if (limit_samples && received_samples >= limit_samples)
 348                         break;
 349
 350                 if (o->format->data && packet->type == o->format->df_type) {
 351                         o->format->data(o, (const uint8_t *)analog->data,
 352                                         analog->num_samples * sizeof(float),
 353                                         &output_buf, &output_len);
 354                         if (output_buf) {
 355                                 fwrite(output_buf, 1, output_len, outfile);
 356                                 fflush(outfile);
 357                                 g_free(output_buf);
 358                         }
 359                 }
 360
 361                 received_samples += analog->num_samples;
 362                 break;
 363
 364         case SR_DF_FRAME_BEGIN:
 365                 g_debug("cli: received SR_DF_FRAME_BEGIN");
 366                 if (o->format->event) {
 367                         o->format->event(o, SR_DF_FRAME_BEGIN, &output_buf,
 368                                          &output_len);
 369                         if (output_buf) {
 370                                 fwrite(output_buf, 1, output_len, outfile);
 371                                 fflush(outfile);
 372                                 g_free(output_buf);
 373                         }
 374                 }
 375                 break;
 376
 377         case SR_DF_FRAME_END:
 378                 g_debug("cli: received SR_DF_FRAME_END");
 379                 if (o->format->event) {
 380                         o->format->event(o, SR_DF_FRAME_END, &output_buf,
 381                                          &output_len);
 382                         if (output_buf) {
 383                                 fwrite(output_buf, 1, output_len, outfile);
 384                                 fflush(outfile);
 385                                 g_free(output_buf);
 386                         }
 387                 }
 388                 break;
 389
 390         default:
 391                 break;
 392         }
 393
 394         if (o && o->format->receive) {
 395                 if (o->format->receive(o, sdi, packet, &out) == SR_OK && out) {
 396                         fwrite(out->str, 1, out->len, outfile);
 397                         fflush(outfile);
 398                         g_string_free(out, TRUE);
 399                 }
 400         }
 401
 402         /* SR_DF_END needs to be handled after the output module's receive()
 403          * is called, so it can properly clean up that module etc. */
 404         if (packet->type == SR_DF_END) {
 405                 g_debug("cli: Received SR_DF_END");
 406
 407                 if (o->format->event) {
 408                         o->format->event(o, SR_DF_END, &output_buf, &output_len);
 409                         if (output_buf) {
 410                                 if (outfile)
 411                                         fwrite(output_buf, 1, output_len, outfile);
 412                                 g_free(output_buf);
 413                                 output_len = 0;
 414                         }
 415                 }
 416
 417                 if (limit_samples && received_samples < limit_samples)
 418                         g_warning("Device only sent %" PRIu64 " samples.",
 419                                received_samples);
 420
 421                 if (opt_continuous)
 422                         g_warning("Device stopped after %" PRIu64 " samples.",
 423                                received_samples);
 424
 425                 g_array_free(logic_probelist, TRUE);
 426
 427                 if (o->format->cleanup)
 428                         o->format->cleanup(o);
 429                 g_free(o);
 430                 o = NULL;
 431
 432                 if (outfile && outfile != stdout)
 433                         fclose(outfile);
 434
 435                 if (opt_output_file && default_output_format && savebuf->len) {
 436                         if (sr_session_save(opt_output_file, sdi, savebuf->data,
 437                                         unitsize, savebuf->len / unitsize) != SR_OK)
 438                                 g_critical("Failed to save session.");
 439                         g_byte_array_free(savebuf, TRUE);
 440                 }
 441         }
 442
 443 }
 444
 445 int opt_to_gvar(char *key, char *value, struct sr_config *src)
 446 {
 447         const struct sr_config_info *srci;
 448         double tmp_double;
 449         uint64_t tmp_u64, p, q, low, high;
 450         GVariant *rational[2], *range[2];
 451         gboolean tmp_bool;
 452         int ret;
 453
 454         if (!(srci = sr_config_info_name_get(key))) {
 455                 g_critical("Unknown device option '%s'.", (char *) key);
 456                 return -1;
 457         }
 458         src->key = srci->key;
 459
 460         if ((value == NULL) &&
 461                 (srci->datatype != SR_T_BOOL)) {
 462                 g_critical("Option '%s' needs a value.", (char *)key);
 463                 return -1;
 464         }
 465
 466         ret = 0;
 467         switch (srci->datatype) {
 468         case SR_T_UINT64:
 469                 ret = sr_parse_sizestring(value, &tmp_u64);
 470                 if (ret != 0)
 471                         break;
 472                 src->data = g_variant_new_uint64(tmp_u64);
 473                 break;
 474         case SR_T_INT32:
 475                 ret = sr_parse_sizestring(value, &tmp_u64);
 476                 if (ret != 0)
 477                         break;
 478                 src->data = g_variant_new_int32(tmp_u64);
 479                 break;
 480         case SR_T_CHAR:
 481                 src->data = g_variant_new_string(value);
 482                 break;
 483         case SR_T_BOOL:
 484                 if (!value)
 485                         tmp_bool = TRUE;
 486                 else
 487                         tmp_bool = sr_parse_boolstring(value);
 488                 src->data = g_variant_new_boolean(tmp_bool);
 489                 break;
 490         case SR_T_FLOAT:
 491                 tmp_double = strtof(value, NULL);
 492                 src->data = g_variant_new_double(tmp_double);
 493                 break;
 494         case SR_T_RATIONAL_PERIOD:
 495                 if ((ret = sr_parse_period(value, &p, &q)) != SR_OK)
 496                         break;
 497                 rational[0] = g_variant_new_uint64(p);
 498                 rational[1] = g_variant_new_uint64(q);
 499                 src->data = g_variant_new_tuple(rational, 2);
 500                 break;
 501         case SR_T_RATIONAL_VOLT:
 502                 if ((ret = sr_parse_voltage(value, &p, &q)) != SR_OK)
 503                         break;
 504                 rational[0] = g_variant_new_uint64(p);
 505                 rational[1] = g_variant_new_uint64(q);
 506                 src->data = g_variant_new_tuple(rational, 2);
 507                 break;
 508         case SR_T_UINT64_RANGE:
 509                 if (sscanf(value, "%"PRIu64"-%"PRIu64, &low, &high) != 2) {
 510                         ret = -1;
 511                         break;
 512                 } else {
 513                         range[0] = g_variant_new_uint64(low);
 514                         range[1] = g_variant_new_uint64(high);
 515                         src->data = g_variant_new_tuple(range, 2);
 516                 }
 517                 break;
 518         default:
 519                 ret = -1;
 520         }
 521
 522         return ret;
 523 }
 524
 525 int set_dev_options(struct sr_dev_inst *sdi, GHashTable *args)
 526 {
 527         struct sr_config src;
 528         struct sr_probe_group *pg;
 529         GHashTableIter iter;
 530         gpointer key, value;
 531         int ret;
 532
 533         g_hash_table_iter_init(&iter, args);
 534         while (g_hash_table_iter_next(&iter, &key, &value)) {
 535                 if ((ret = opt_to_gvar(key, value, &src)) != 0)
 536                         return ret;
 537                 pg = select_probe_group(sdi);
 538                 ret = sr_config_set(sdi, pg, src.key, src.data);
 539                 if (ret != SR_OK) {
 540                         g_critical("Failed to set device option '%s'.", (char *)key);
 541                         return ret;
 542                 }
 543         }
 544
 545         return SR_OK;
 546 }
 547
 548 void run_session(void)
 549 {
 550         GSList *devices;
 551         GHashTable *devargs;
 552         GVariant *gvar;
 553         struct sr_dev_inst *sdi;
 554         uint64_t max_samples;
 555         int max_probes, i;
 556         char **triggerlist;
 557
 558         devices = device_scan();
 559         if (!devices) {
 560                 g_critical("No devices found.");
 561                 return;
 562         }
 563         if (g_slist_length(devices) > 1) {
 564                 g_critical("sigrok-cli only supports one device for capturing.");
 565                 return;
 566         }
 567         sdi = devices->data;
 568
 569         sr_session_new();
 570         sr_session_datafeed_callback_add(datafeed_in, NULL);
 571
 572         if (sr_dev_open(sdi) != SR_OK) {
 573                 g_critical("Failed to open device.");
 574                 return;
 575         }
 576
 577         if (sr_session_dev_add(sdi) != SR_OK) {
 578                 g_critical("Failed to add device to session.");
 579                 sr_session_destroy();
 580                 return;
 581         }
 582
 583         if (opt_config) {
 584                 if ((devargs = parse_generic_arg(opt_config, FALSE))) {
 585                         if (set_dev_options(sdi, devargs) != SR_OK)
 586                                 return;
 587                         g_hash_table_destroy(devargs);
 588                 }
 589         }
 590
 591         if (select_probes(sdi) != SR_OK) {
 592                 g_critical("Failed to set probes.");
 593                 sr_session_destroy();
 594                 return;
 595         }
 596
 597         if (opt_triggers) {
 598                 if (!(triggerlist = sr_parse_triggerstring(sdi, opt_triggers))) {
 599                         sr_session_destroy();
 600                         return;
 601                 }
 602                 max_probes = g_slist_length(sdi->probes);
 603                 for (i = 0; i < max_probes; i++) {
 604                         if (triggerlist[i]) {
 605                                 sr_dev_trigger_set(sdi, i, triggerlist[i]);
 606                                 g_free(triggerlist[i]);
 607                         }
 608                 }
 609                 g_free(triggerlist);
 610         }
 611
 612         if (opt_continuous) {
 613                 if (!sr_dev_has_option(sdi, SR_CONF_CONTINUOUS)) {
 614                         g_critical("This device does not support continuous sampling.");
 615                         sr_session_destroy();
 616                         return;
 617                 }
 618         }
 619
 620         if (opt_time) {
 621                 if (set_limit_time(sdi) != SR_OK) {
 622                         sr_session_destroy();
 623                         return;
 624                 }
 625         }
 626
 627         if (opt_samples) {
 628                 if ((sr_parse_sizestring(opt_samples, &limit_samples) != SR_OK)) {
 629                         g_critical("Invalid sample limit '%s'.", opt_samples);
 630                         sr_session_destroy();
 631                         return;
 632                 }
 633                 if (sr_config_get(sdi->driver, sdi, NULL,
 634                                 SR_CONF_MAX_UNCOMPRESSED_SAMPLES, &gvar) == SR_OK) {
 635                         /* The device has no compression, or compression is turned
 636                          * off, and publishes its sample memory size. */
 637                         max_samples = g_variant_get_uint64(gvar);
 638                         g_variant_unref(gvar);
 639                         if (limit_samples > max_samples) {
 640                                 g_critical("The device can store only %"PRIu64
 641                                                 " samples with the current settings.", max_samples);
 642                         }
 643                 }
 644                 gvar = g_variant_new_uint64(limit_samples);
 645                 if (sr_config_set(sdi, NULL, SR_CONF_LIMIT_SAMPLES, gvar) != SR_OK) {
 646                         g_critical("Failed to configure sample limit.");
 647                         sr_session_destroy();
 648                         return;
 649                 }
 650         }
 651
 652         if (opt_frames) {
 653                 if ((sr_parse_sizestring(opt_frames, &limit_frames) != SR_OK)) {
 654                         g_critical("Invalid sample limit '%s'.", opt_samples);
 655                         sr_session_destroy();
 656                         return;
 657                 }
 658                 gvar = g_variant_new_uint64(limit_frames);
 659                 if (sr_config_set(sdi, NULL, SR_CONF_LIMIT_FRAMES, gvar) != SR_OK) {
 660                         g_critical("Failed to configure frame limit.");
 661                         sr_session_destroy();
 662                         return;
 663                 }
 664         }
 665
 666         if (sr_session_start() != SR_OK) {
 667                 g_critical("Failed to start session.");
 668                 sr_session_destroy();
 669                 return;
 670         }
 671
 672         if (opt_continuous)
 673                 add_anykey();
 674
 675         sr_session_run();
 676
 677         if (opt_continuous)
 678                 clear_anykey();
 679
 680         sr_session_datafeed_callback_remove_all();
 681         sr_session_destroy();
 682         g_slist_free(devices);
 683
 684 }
 685