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 #include <string.h>
  25 #include <stdlib.h>
  26
  27 static struct sr_output_format *output_format = NULL;
  28 static int default_output_format = FALSE;
  29 static char *output_format_param = NULL;
  30 static GByteArray *savebuf;
  31 static uint64_t limit_samples = 0;
  32 static uint64_t limit_frames = 0;
  33
  34 extern gchar *opt_output_file;
  35 extern gchar *opt_output_format;
  36 extern gchar *opt_pds;
  37 extern gboolean opt_wait_trigger;
  38 extern gchar *opt_time;
  39 extern gchar *opt_samples;
  40 extern gchar *opt_frames;
  41 extern gchar *opt_continuous;
  42 extern gchar *opt_config;
  43 extern gchar *opt_triggers;
  44 #ifdef HAVE_SRD
  45 extern struct srd_session *srd_sess;
  46 #endif
  47
  48
  49 static GArray *get_enabled_logic_probes(const struct sr_dev_inst *sdi)
  50 {
  51         struct sr_probe *probe;
  52         GArray *probes;
  53         GSList *l;
  54
  55         probes = g_array_new(FALSE, FALSE, sizeof(int));
  56         for (l = sdi->probes; l; l = l->next) {
  57                 probe = l->data;
  58                 if (probe->type != SR_PROBE_LOGIC)
  59                         continue;
  60                 if (probe->enabled != TRUE)
  61                         continue;
  62                 g_array_append_val(probes, probe->index);
  63         }
  64
  65         return probes;
  66 }
  67
  68 static int set_limit_time(const struct sr_dev_inst *sdi)
  69 {
  70         GVariant *gvar;
  71         uint64_t time_msec;
  72         uint64_t samplerate;
  73
  74         if (!(time_msec = sr_parse_timestring(opt_time))) {
  75                 g_critical("Invalid time '%s'", opt_time);
  76                 return SR_ERR;
  77         }
  78
  79         if (sr_dev_has_option(sdi, SR_CONF_LIMIT_MSEC)) {
  80                 gvar = g_variant_new_uint64(time_msec);
  81                 if (sr_config_set(sdi, NULL, SR_CONF_LIMIT_MSEC, gvar) != SR_OK) {
  82                         g_critical("Failed to configure time limit.");
  83                         return SR_ERR;
  84                 }
  85         } else if (sr_dev_has_option(sdi, SR_CONF_SAMPLERATE)) {
  86                 /* Convert to samples based on the samplerate.  */
  87                 sr_config_get(sdi->driver, sdi, NULL, SR_CONF_SAMPLERATE, &gvar);
  88                 samplerate = g_variant_get_uint64(gvar);
  89                 g_variant_unref(gvar);
  90                 limit_samples = (samplerate) * time_msec / (uint64_t)1000;
  91                 if (limit_samples == 0) {
  92                         g_critical("Not enough time at this samplerate.");
  93                         return SR_ERR;
  94                 }
  95                 gvar = g_variant_new_uint64(limit_samples);
  96                 if (sr_config_set(sdi, NULL, SR_CONF_LIMIT_SAMPLES, gvar) != SR_OK) {
  97                         g_critical("Failed to configure time-based sample limit.");
  98                         return SR_ERR;
  99                 }
 100         } else {
 101                 g_critical("This device does not support time limits.");
 102                 return SR_ERR;
 103         }
 104
 105         return SR_OK;
 106 }
 107
 108 int setup_output_format(void)
 109 {
 110         GHashTable *fmtargs;
 111         GHashTableIter iter;
 112         gpointer key, value;
 113         struct sr_output_format **outputs;
 114         int i;
 115         char *fmtspec;
 116
 117         if (opt_output_format && !strcmp(opt_output_format, "sigrok")) {
 118                 /* Doesn't really exist as an output module - this is
 119                  * the session save mode. */
 120                 g_free(opt_output_format);
 121                 opt_output_format = NULL;
 122         }
 123
 124         if (!opt_output_format) {
 125                 opt_output_format = DEFAULT_OUTPUT_FORMAT;
 126                 /* we'll need to remember this so when saving to a file
 127                  * later, sigrok session format will be used.
 128                  */
 129                 default_output_format = TRUE;
 130         }
 131
 132         fmtargs = parse_generic_arg(opt_output_format, TRUE);
 133         fmtspec = g_hash_table_lookup(fmtargs, "sigrok_key");
 134         if (!fmtspec) {
 135                 g_critical("Invalid output format.");
 136                 return 1;
 137         }
 138         outputs = sr_output_list();
 139         for (i = 0; outputs[i]; i++) {
 140                 if (strcmp(outputs[i]->id, fmtspec))
 141                         continue;
 142                 g_hash_table_remove(fmtargs, "sigrok_key");
 143                 output_format = outputs[i];
 144                 g_hash_table_iter_init(&iter, fmtargs);
 145                 while (g_hash_table_iter_next(&iter, &key, &value)) {
 146                         /* only supporting one parameter per output module
 147                          * for now, and only its value */
 148                         output_format_param = g_strdup(value);
 149                         break;
 150                 }
 151                 break;
 152         }
 153         if (!output_format) {
 154                 g_critical("Invalid output format %s.", opt_output_format);
 155                 return 1;
 156         }
 157         g_hash_table_destroy(fmtargs);
 158
 159         return 0;
 160 }
 161
 162 void datafeed_in(const struct sr_dev_inst *sdi,
 163                 const struct sr_datafeed_packet *packet, void *cb_data)
 164 {
 165         const struct sr_datafeed_meta *meta;
 166         const struct sr_datafeed_logic *logic;
 167         const struct sr_datafeed_analog *analog;
 168         struct sr_config *src;
 169         static struct sr_output *o = NULL;
 170         static GArray *logic_probelist = NULL;
 171         static uint64_t received_samples = 0;
 172         static int unitsize = 0;
 173         static int triggered = 0;
 174         static FILE *outfile = NULL;
 175         GSList *l;
 176         GString *out;
 177         uint64_t samplerate;
 178         uint64_t end_sample;
 179         uint64_t output_len, input_len;
 180         uint8_t *output_buf;
 181
 182         (void) cb_data;
 183
 184         /* If the first packet to come in isn't a header, don't even try. */
 185         if (packet->type != SR_DF_HEADER && o == NULL)
 186                 return;
 187
 188         switch (packet->type) {
 189         case SR_DF_HEADER:
 190                 g_debug("cli: Received SR_DF_HEADER");
 191                 /* Initialize the output module. */
 192                 if (!(o = g_try_malloc(sizeof(struct sr_output)))) {
 193                         g_critical("Output module malloc failed.");
 194                         exit(1);
 195                 }
 196                 o->format = output_format;
 197                 o->sdi = (struct sr_dev_inst *)sdi;
 198                 o->param = output_format_param;
 199                 if (o->format->init) {
 200                         if (o->format->init(o) != SR_OK) {
 201                                 g_critical("Output format initialization failed.");
 202                                 exit(1);
 203                         }
 204                 }
 205
 206                 /* Prepare non-stdout output. */
 207                 outfile = stdout;
 208                 if (opt_output_file) {
 209                         if (default_output_format) {
 210                                 /* output file is in session format, so we'll
 211                                  * keep a copy of everything as it comes in
 212                                  * and save from there after the session. */
 213                                 outfile = NULL;
 214                                 savebuf = g_byte_array_new();
 215                         } else {
 216                                 /* saving to a file in whatever format was set
 217                                  * with --format, so all we need is a filehandle */
 218                                 outfile = g_fopen(opt_output_file, "wb");
 219                         }
 220                 }
 221
 222                 /* Prepare for logic data. */
 223                 logic_probelist = get_enabled_logic_probes(sdi);
 224                 /* How many bytes we need to store the packed samples. */
 225                 unitsize = (logic_probelist->len + 7) / 8;
 226
 227 #ifdef HAVE_SRD
 228                 GVariant *gvar;
 229                 if (opt_pds && logic_probelist->len) {
 230                         if (sr_config_get(sdi->driver, sdi, NULL, SR_CONF_SAMPLERATE,
 231                                         &gvar) == SR_OK) {
 232                                 samplerate = g_variant_get_uint64(gvar);
 233                                 g_variant_unref(gvar);
 234                                 if (srd_session_metadata_set(srd_sess, SRD_CONF_SAMPLERATE,
 235                                                 g_variant_new_uint64(samplerate)) != SRD_OK) {
 236                                         g_critical("Failed to configure decode session.");
 237                                         break;
 238                                 }
 239                         }
 240                         if (srd_session_start(srd_sess) != SRD_OK) {
 241                                 g_critical("Failed to start decode session.");
 242                                 break;
 243                         }
 244                 }
 245 #endif
 246                 break;
 247
 248         case SR_DF_META:
 249                 g_debug("cli: received SR_DF_META");
 250                 meta = packet->payload;
 251                 for (l = meta->config; l; l = l->next) {
 252                         src = l->data;
 253                         switch (src->key) {
 254                         case SR_CONF_SAMPLERATE:
 255                                 samplerate = g_variant_get_uint64(src->data);
 256                                 g_debug("cli: got samplerate %"PRIu64" Hz", samplerate);
 257 #ifdef HAVE_SRD
 258                                 if (opt_pds) {
 259                                         if (srd_session_metadata_set(srd_sess, SRD_CONF_SAMPLERATE,
 260                                                         g_variant_new_uint64(samplerate)) != SRD_OK) {
 261                                                 g_critical("Failed to pass samplerate to decoder.");
 262                                         }
 263                                 }
 264 #endif
 265                                 break;
 266                         case SR_CONF_SAMPLE_INTERVAL:
 267                                 samplerate = g_variant_get_uint64(src->data);
 268                                 g_debug("cli: got sample interval %"PRIu64" ms", samplerate);
 269                                 break;
 270                         default:
 271                                 /* Unknown metadata is not an error. */
 272                                 break;
 273                         }
 274                 }
 275                 break;
 276
 277         case SR_DF_TRIGGER:
 278                 g_debug("cli: received SR_DF_TRIGGER");
 279                 if (o->format->event)
 280                         o->format->event(o, SR_DF_TRIGGER, &output_buf,
 281                                          &output_len);
 282                 triggered = 1;
 283                 break;
 284
 285         case SR_DF_LOGIC:
 286                 logic = packet->payload;
 287                 g_message("cli: received SR_DF_LOGIC, %"PRIu64" bytes", logic->length);
 288                 if (logic->length == 0)
 289                         break;
 290
 291                 /* Don't store any samples until triggered. */
 292                 if (opt_wait_trigger && !triggered)
 293                         break;
 294
 295                 if (limit_samples && received_samples >= limit_samples)
 296                         break;
 297
 298                 end_sample = received_samples + logic->length / logic->unitsize;
 299                 /* Cut off last packet according to the sample limit. */
 300                 if (limit_samples && end_sample > limit_samples)
 301                         end_sample = limit_samples;
 302                 input_len = (end_sample - received_samples) * logic->unitsize;
 303
 304                 if (opt_output_file && default_output_format) {
 305                         /* Saving to a session file. */
 306                         g_byte_array_append(savebuf, logic->data, input_len);
 307                 } else {
 308                         if (opt_pds) {
 309 #ifdef HAVE_SRD
 310                                 if (srd_session_send(srd_sess, received_samples, end_sample,
 311                                                 logic->data, input_len) != SRD_OK)
 312                                         sr_session_stop();
 313 #endif
 314                         } else {
 315                                 output_len = 0;
 316                                 if (o->format->data && packet->type == o->format->df_type)
 317                                         o->format->data(o, logic->data, input_len,
 318                                                         &output_buf, &output_len);
 319                                 if (output_len) {
 320                                         fwrite(output_buf, 1, output_len, outfile);
 321                                         fflush(outfile);
 322                                         g_free(output_buf);
 323                                 }
 324                         }
 325                 }
 326
 327                 received_samples += logic->length / logic->unitsize;
 328                 break;
 329
 330         case SR_DF_ANALOG:
 331                 analog = packet->payload;
 332                 g_message("cli: received SR_DF_ANALOG, %d samples", analog->num_samples);
 333                 if (analog->num_samples == 0)
 334                         break;
 335
 336                 if (limit_samples && received_samples >= limit_samples)
 337                         break;
 338
 339                 if (o->format->data && packet->type == o->format->df_type) {
 340                         o->format->data(o, (const uint8_t *)analog->data,
 341                                         analog->num_samples * sizeof(float),
 342                                         &output_buf, &output_len);
 343                         if (output_buf) {
 344                                 fwrite(output_buf, 1, output_len, outfile);
 345                                 fflush(outfile);
 346                                 g_free(output_buf);
 347                         }
 348                 }
 349
 350                 received_samples += analog->num_samples;
 351                 break;
 352
 353         case SR_DF_FRAME_BEGIN:
 354                 g_debug("cli: received SR_DF_FRAME_BEGIN");
 355                 if (o->format->event) {
 356                         o->format->event(o, SR_DF_FRAME_BEGIN, &output_buf,
 357                                          &output_len);
 358                         if (output_buf) {
 359                                 fwrite(output_buf, 1, output_len, outfile);
 360                                 fflush(outfile);
 361                                 g_free(output_buf);
 362                         }
 363                 }
 364                 break;
 365
 366         case SR_DF_FRAME_END:
 367                 g_debug("cli: received SR_DF_FRAME_END");
 368                 if (o->format->event) {
 369                         o->format->event(o, SR_DF_FRAME_END, &output_buf,
 370                                          &output_len);
 371                         if (output_buf) {
 372                                 fwrite(output_buf, 1, output_len, outfile);
 373                                 fflush(outfile);
 374                                 g_free(output_buf);
 375                         }
 376                 }
 377                 break;
 378
 379         default:
 380                 break;
 381         }
 382
 383         if (o && o->format->receive) {
 384                 if (o->format->receive(o, sdi, packet, &out) == SR_OK && out) {
 385                         fwrite(out->str, 1, out->len, outfile);
 386                         fflush(outfile);
 387                         g_string_free(out, TRUE);
 388                 }
 389         }
 390
 391         /* SR_DF_END needs to be handled after the output module's receive()
 392          * is called, so it can properly clean up that module etc. */
 393         if (packet->type == SR_DF_END) {
 394                 g_debug("cli: Received SR_DF_END");
 395
 396                 if (o->format->event) {
 397                         o->format->event(o, SR_DF_END, &output_buf, &output_len);
 398                         if (output_buf) {
 399                                 if (outfile)
 400                                         fwrite(output_buf, 1, output_len, outfile);
 401                                 g_free(output_buf);
 402                                 output_len = 0;
 403                         }
 404                 }
 405
 406                 if (limit_samples && received_samples < limit_samples)
 407                         g_warning("Device only sent %" PRIu64 " samples.",
 408                                received_samples);
 409
 410                 if (opt_continuous)
 411                         g_warning("Device stopped after %" PRIu64 " samples.",
 412                                received_samples);
 413
 414                 g_array_free(logic_probelist, TRUE);
 415
 416                 if (o->format->cleanup)
 417                         o->format->cleanup(o);
 418                 g_free(o);
 419                 o = NULL;
 420
 421                 if (outfile && outfile != stdout)
 422                         fclose(outfile);
 423
 424                 if (opt_output_file && default_output_format && savebuf->len) {
 425                         if (sr_session_save(opt_output_file, sdi, savebuf->data,
 426                                         unitsize, savebuf->len / unitsize) != SR_OK)
 427                                 g_critical("Failed to save session.");
 428                         g_byte_array_free(savebuf, TRUE);
 429                 }
 430         }
 431
 432 }
 433
 434 int opt_to_gvar(char *key, char *value, struct sr_config *src)
 435 {
 436         const struct sr_config_info *srci;
 437         double tmp_double;
 438         uint64_t tmp_u64, p, q, low, high;
 439         GVariant *rational[2], *range[2];
 440         gboolean tmp_bool;
 441         int ret;
 442
 443         if (!(srci = sr_config_info_name_get(key))) {
 444                 g_critical("Unknown device option '%s'.", (char *) key);
 445                 return -1;
 446         }
 447         src->key = srci->key;
 448
 449         if ((value == NULL) &&
 450                 (srci->datatype != SR_T_BOOL)) {
 451                 g_critical("Option '%s' needs a value.", (char *)key);
 452                 return -1;
 453         }
 454
 455         ret = 0;
 456         switch (srci->datatype) {
 457         case SR_T_UINT64:
 458                 ret = sr_parse_sizestring(value, &tmp_u64);
 459                 if (ret != 0)
 460                         break;
 461                 src->data = g_variant_new_uint64(tmp_u64);
 462                 break;
 463         case SR_T_INT32:
 464                 ret = sr_parse_sizestring(value, &tmp_u64);
 465                 if (ret != 0)
 466                         break;
 467                 src->data = g_variant_new_int32(tmp_u64);
 468                 break;
 469         case SR_T_CHAR:
 470                 src->data = g_variant_new_string(value);
 471                 break;
 472         case SR_T_BOOL:
 473                 if (!value)
 474                         tmp_bool = TRUE;
 475                 else
 476                         tmp_bool = sr_parse_boolstring(value);
 477                 src->data = g_variant_new_boolean(tmp_bool);
 478                 break;
 479         case SR_T_FLOAT:
 480                 tmp_double = strtof(value, NULL);
 481                 src->data = g_variant_new_double(tmp_double);
 482                 break;
 483         case SR_T_RATIONAL_PERIOD:
 484                 if ((ret = sr_parse_period(value, &p, &q)) != SR_OK)
 485                         break;
 486                 rational[0] = g_variant_new_uint64(p);
 487                 rational[1] = g_variant_new_uint64(q);
 488                 src->data = g_variant_new_tuple(rational, 2);
 489                 break;
 490         case SR_T_RATIONAL_VOLT:
 491                 if ((ret = sr_parse_voltage(value, &p, &q)) != SR_OK)
 492                         break;
 493                 rational[0] = g_variant_new_uint64(p);
 494                 rational[1] = g_variant_new_uint64(q);
 495                 src->data = g_variant_new_tuple(rational, 2);
 496                 break;
 497         case SR_T_UINT64_RANGE:
 498                 if (sscanf(value, "%"PRIu64"-%"PRIu64, &low, &high) != 2) {
 499                         ret = -1;
 500                         break;
 501                 } else {
 502                         range[0] = g_variant_new_uint64(low);
 503                         range[1] = g_variant_new_uint64(high);
 504                         src->data = g_variant_new_tuple(range, 2);
 505                 }
 506                 break;
 507         default:
 508                 ret = -1;
 509         }
 510
 511         return ret;
 512 }
 513
 514 int set_dev_options(struct sr_dev_inst *sdi, GHashTable *args)
 515 {
 516         struct sr_config src;
 517         struct sr_probe_group *pg;
 518         GHashTableIter iter;
 519         gpointer key, value;
 520         int ret;
 521
 522         g_hash_table_iter_init(&iter, args);
 523         while (g_hash_table_iter_next(&iter, &key, &value)) {
 524                 if ((ret = opt_to_gvar(key, value, &src)) != 0)
 525                         return ret;
 526                 pg = select_probe_group(sdi);
 527                 ret = sr_config_set(sdi, pg, src.key, src.data);
 528                 if (ret != SR_OK) {
 529                         g_critical("Failed to set device option '%s'.", (char *)key);
 530                         return ret;
 531                 }
 532         }
 533
 534         return SR_OK;
 535 }
 536
 537 void run_session(void)
 538 {
 539         GSList *devices;
 540         GHashTable *devargs;
 541         GVariant *gvar;
 542         struct sr_dev_inst *sdi;
 543         uint64_t min_samples, max_samples;
 544         int max_probes, i;
 545         char **triggerlist;
 546
 547         devices = device_scan();
 548         if (!devices) {
 549                 g_critical("No devices found.");
 550                 return;
 551         }
 552         if (g_slist_length(devices) > 1) {
 553                 g_critical("sigrok-cli only supports one device for capturing.");
 554                 return;
 555         }
 556         sdi = devices->data;
 557
 558         sr_session_new();
 559         sr_session_datafeed_callback_add(datafeed_in, NULL);
 560
 561         if (sr_dev_open(sdi) != SR_OK) {
 562                 g_critical("Failed to open device.");
 563                 return;
 564         }
 565
 566         if (sr_session_dev_add(sdi) != SR_OK) {
 567                 g_critical("Failed to add device to session.");
 568                 sr_session_destroy();
 569                 return;
 570         }
 571
 572         if (opt_config) {
 573                 if ((devargs = parse_generic_arg(opt_config, FALSE))) {
 574                         if (set_dev_options(sdi, devargs) != SR_OK)
 575                                 return;
 576                         g_hash_table_destroy(devargs);
 577                 }
 578         }
 579
 580         if (select_probes(sdi) != SR_OK) {
 581                 g_critical("Failed to set probes.");
 582                 sr_session_destroy();
 583                 return;
 584         }
 585
 586         if (opt_triggers) {
 587                 if (!(triggerlist = sr_parse_triggerstring(sdi, opt_triggers))) {
 588                         sr_session_destroy();
 589                         return;
 590                 }
 591                 max_probes = g_slist_length(sdi->probes);
 592                 for (i = 0; i < max_probes; i++) {
 593                         if (triggerlist[i]) {
 594                                 sr_dev_trigger_set(sdi, i, triggerlist[i]);
 595                                 g_free(triggerlist[i]);
 596                         }
 597                 }
 598                 g_free(triggerlist);
 599         }
 600
 601         if (opt_continuous) {
 602                 if (!sr_dev_has_option(sdi, SR_CONF_CONTINUOUS)) {
 603                         g_critical("This device does not support continuous sampling.");
 604                         sr_session_destroy();
 605                         return;
 606                 }
 607         }
 608
 609         if (opt_time) {
 610                 if (set_limit_time(sdi) != SR_OK) {
 611                         sr_session_destroy();
 612                         return;
 613                 }
 614         }
 615
 616         if (opt_samples) {
 617                 if ((sr_parse_sizestring(opt_samples, &limit_samples) != SR_OK)) {
 618                         g_critical("Invalid sample limit '%s'.", opt_samples);
 619                         sr_session_destroy();
 620                         return;
 621                 }
 622                 if (sr_config_list(sdi->driver, sdi, NULL,
 623                                 SR_CONF_LIMIT_SAMPLES, &gvar) == SR_OK) {
 624                         /* The device has no compression, or compression is turned
 625                          * off, and publishes its sample memory size. */
 626                         g_variant_get(gvar, "(tt)", &min_samples, &max_samples);
 627                         g_variant_unref(gvar);
 628                         if (limit_samples < min_samples) {
 629                                 g_critical("The device stores at least %"PRIu64
 630                                                 " samples with the current settings.", min_samples);
 631                         }
 632                         if (limit_samples > max_samples) {
 633                                 g_critical("The device can store only %"PRIu64
 634                                                 " samples with the current settings.", max_samples);
 635                         }
 636                 }
 637                 gvar = g_variant_new_uint64(limit_samples);
 638                 if (sr_config_set(sdi, NULL, SR_CONF_LIMIT_SAMPLES, gvar) != SR_OK) {
 639                         g_critical("Failed to configure sample limit.");
 640                         sr_session_destroy();
 641                         return;
 642                 }
 643         }
 644
 645         if (opt_frames) {
 646                 if ((sr_parse_sizestring(opt_frames, &limit_frames) != SR_OK)) {
 647                         g_critical("Invalid sample limit '%s'.", opt_samples);
 648                         sr_session_destroy();
 649                         return;
 650                 }
 651                 gvar = g_variant_new_uint64(limit_frames);
 652                 if (sr_config_set(sdi, NULL, SR_CONF_LIMIT_FRAMES, gvar) != SR_OK) {
 653                         g_critical("Failed to configure frame limit.");
 654                         sr_session_destroy();
 655                         return;
 656                 }
 657         }
 658
 659         if (sr_session_start() != SR_OK) {
 660                 g_critical("Failed to start session.");
 661                 sr_session_destroy();
 662                 return;
 663         }
 664
 665         if (opt_continuous)
 666                 add_anykey();
 667
 668         sr_session_run();
 669
 670         if (opt_continuous)
 671                 clear_anykey();
 672
 673         sr_session_datafeed_callback_remove_all();
 674         sr_session_destroy();
 675         g_slist_free(devices);
 676
 677 }
 678