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)
  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 (fmtopts)
 108                 g_hash_table_destroy(fmtopts);
 109         g_hash_table_destroy(fmtargs);
 110
 111         return o;
 112 }
 113
 114 const struct sr_transform *setup_transform_module(const struct sr_dev_inst *sdi)
 115 {
 116         const struct sr_transform_module *tmod;
 117         const struct sr_option **options;
 118         const struct sr_transform *t;
 119         GHashTable *fmtargs, *fmtopts;
 120         char *fmtspec;
 121
 122         if (!opt_transform_module)
 123                 opt_transform_module = "nop";
 124
 125         fmtargs = parse_generic_arg(opt_transform_module, TRUE);
 126         fmtspec = g_hash_table_lookup(fmtargs, "sigrok_key");
 127         if (!fmtspec)
 128                 g_critical("Invalid transform module.");
 129         if (!(tmod = sr_transform_find(fmtspec)))
 130                 g_critical("Unknown transform module '%s'.", fmtspec);
 131         g_hash_table_remove(fmtargs, "sigrok_key");
 132         if ((options = sr_transform_options_get(tmod))) {
 133                 fmtopts = generic_arg_to_opt(options, fmtargs);
 134                 sr_transform_options_free(options);
 135         } else
 136                 fmtopts = NULL;
 137         t = sr_transform_new(tmod, fmtopts, sdi);
 138         if (fmtopts)
 139                 g_hash_table_destroy(fmtopts);
 140         g_hash_table_destroy(fmtargs);
 141
 142         return t;
 143 }
 144
 145 void datafeed_in(const struct sr_dev_inst *sdi,
 146                 const struct sr_datafeed_packet *packet, void *cb_data)
 147 {
 148         const struct sr_datafeed_meta *meta;
 149         const struct sr_datafeed_logic *logic;
 150         const struct sr_datafeed_analog *analog;
 151         struct sr_session *session;
 152         struct sr_config *src;
 153         static const struct sr_output *o = NULL;
 154         static const struct sr_output *oa = NULL;
 155         static uint64_t rcvd_samples_logic = 0;
 156         static uint64_t rcvd_samples_analog = 0;
 157         static uint64_t samplerate = 0;
 158         static int triggered = 0;
 159         static FILE *outfile = NULL;
 160         GSList *l;
 161         GString *out;
 162         GVariant *gvar;
 163         uint64_t end_sample;
 164         uint64_t input_len;
 165         struct sr_dev_driver *driver;
 166
 167         driver = sr_dev_inst_driver_get(sdi);
 168
 169         /* If the first packet to come in isn't a header, don't even try. */
 170         if (packet->type != SR_DF_HEADER && !o)
 171                 return;
 172
 173         session = cb_data;
 174         switch (packet->type) {
 175         case SR_DF_HEADER:
 176                 g_debug("cli: Received SR_DF_HEADER.");
 177                 if (!(o = setup_output_format(sdi)))
 178                         g_critical("Failed to initialize output module.");
 179
 180                 /* Set up backup analog output module. */
 181                 oa = sr_output_new(sr_output_find("analog"), NULL, sdi, NULL);
 182
 183                 /*
 184                  * Don't open a file when using the "srzip" output format.
 185                  * The srzip output module does open/write/rename/close
 186                  * on its own. This is especially important on Windows since
 187                  * libzip (used by srzip) will try to rename a temporary
 188                  * ZIP file to the final *.sr filename as specified by
 189                  * the sigrok-cli user. However, on Windows file renames
 190                  * of files that are already opened by any process are not
 191                  * possible. Thus, we don't open the *.sr file here,
 192                  * but rather let srzip perform all file operations.
 193                  */
 194                 if (opt_output_file) {
 195                         /* Only open the file if output format != srzip. */
 196                         if (!g_str_has_prefix(opt_output_format, "srzip"))
 197                                 outfile = g_fopen(opt_output_file, "wb");
 198                 } else {
 199                         outfile = stdout;
 200                 }
 201
 202                 rcvd_samples_logic = rcvd_samples_analog = 0;
 203
 204                 if (maybe_config_get(driver, sdi, NULL, SR_CONF_SAMPLERATE,
 205                                 &gvar) == SR_OK) {
 206                         samplerate = g_variant_get_uint64(gvar);
 207                         g_variant_unref(gvar);
 208                 }
 209
 210 #ifdef HAVE_SRD
 211                 if (opt_pds) {
 212                         if (samplerate) {
 213                                 if (srd_session_metadata_set(srd_sess, SRD_CONF_SAMPLERATE,
 214                                                 g_variant_new_uint64(samplerate)) != SRD_OK) {
 215                                         g_critical("Failed to configure decode session.");
 216                                         break;
 217                                 }
 218                         }
 219                         if (srd_session_start(srd_sess) != SRD_OK) {
 220                                 g_critical("Failed to start decode session.");
 221                                 break;
 222                         }
 223                 }
 224 #endif
 225                 break;
 226
 227         case SR_DF_META:
 228                 g_debug("cli: Received SR_DF_META.");
 229                 meta = packet->payload;
 230                 for (l = meta->config; l; l = l->next) {
 231                         src = l->data;
 232                         switch (src->key) {
 233                         case SR_CONF_SAMPLERATE:
 234                                 samplerate = g_variant_get_uint64(src->data);
 235                                 g_debug("cli: Got samplerate %"PRIu64" Hz.", samplerate);
 236 #ifdef HAVE_SRD
 237                                 if (opt_pds) {
 238                                         if (srd_session_metadata_set(srd_sess, SRD_CONF_SAMPLERATE,
 239                                                         g_variant_new_uint64(samplerate)) != SRD_OK) {
 240                                                 g_critical("Failed to pass samplerate to decoder.");
 241                                         }
 242                                 }
 243 #endif
 244                                 break;
 245                         case SR_CONF_SAMPLE_INTERVAL:
 246                                 samplerate = g_variant_get_uint64(src->data);
 247                                 g_debug("cli: Got sample interval %"PRIu64" ms.", samplerate);
 248                                 break;
 249                         default:
 250                                 /* Unknown metadata is not an error. */
 251                                 break;
 252                         }
 253                 }
 254                 break;
 255
 256         case SR_DF_TRIGGER:
 257                 g_debug("cli: Received SR_DF_TRIGGER.");
 258                 triggered = 1;
 259                 break;
 260
 261         case SR_DF_LOGIC:
 262                 logic = packet->payload;
 263                 g_message("cli: Received SR_DF_LOGIC (%"PRIu64" bytes, unitsize = %d).",
 264                                 logic->length, logic->unitsize);
 265                 if (logic->length == 0)
 266                         break;
 267
 268                 /* Don't store any samples until triggered. */
 269                 if (opt_wait_trigger && !triggered)
 270                         break;
 271
 272                 if (limit_samples && rcvd_samples_logic >= limit_samples)
 273                         break;
 274
 275                 end_sample = rcvd_samples_logic + logic->length / logic->unitsize;
 276                 /* Cut off last packet according to the sample limit. */
 277                 if (limit_samples && end_sample > limit_samples)
 278                         end_sample = limit_samples;
 279                 input_len = (end_sample - rcvd_samples_logic) * logic->unitsize;
 280
 281                 if (opt_pds) {
 282 #ifdef HAVE_SRD
 283                         if (srd_session_send(srd_sess, rcvd_samples_logic, end_sample,
 284                                         logic->data, input_len, logic->unitsize) != SRD_OK)
 285                                 sr_session_stop(session);
 286 #endif
 287                 }
 288
 289                 rcvd_samples_logic = end_sample;
 290                 break;
 291
 292         case SR_DF_ANALOG:
 293                 analog = packet->payload;
 294                 g_message("cli: Received SR_DF_ANALOG (%d samples).", analog->num_samples);
 295                 if (analog->num_samples == 0)
 296                         break;
 297
 298                 if (limit_samples && rcvd_samples_analog >= limit_samples)
 299                         break;
 300
 301                 rcvd_samples_analog += analog->num_samples;
 302                 break;
 303
 304         case SR_DF_FRAME_BEGIN:
 305                 g_debug("cli: Received SR_DF_FRAME_BEGIN.");
 306                 break;
 307
 308         case SR_DF_FRAME_END:
 309                 g_debug("cli: Received SR_DF_FRAME_END.");
 310                 break;
 311
 312         default:
 313                 break;
 314         }
 315
 316         if (o && (outfile || g_str_has_prefix(opt_output_format, "srzip")) && !opt_pds) {
 317                 if (sr_output_send(o, packet, &out) == SR_OK) {
 318                         if (!out || (out->len == 0
 319                                         && !opt_output_format
 320                                         && packet->type == SR_DF_ANALOG)) {
 321                                 /*
 322                                  * The user didn't specify an output module,
 323                                  * but needs to see this analog data.
 324                                  */
 325                                 sr_output_send(oa, packet, &out);
 326                         }
 327                         if (out && out->len > 0) {
 328                                 fwrite(out->str, 1, out->len, outfile);
 329                                 fflush(outfile);
 330                         }
 331                         if (out)
 332                                 g_string_free(out, TRUE);
 333                 }
 334         }
 335
 336         /*
 337          * SR_DF_END needs to be handled after the output module's receive()
 338          * is called, so it can properly clean up that module.
 339          */
 340         if (packet->type == SR_DF_END) {
 341                 g_debug("cli: Received SR_DF_END.");
 342
 343                 if (o)
 344                         sr_output_free(o);
 345                 o = NULL;
 346
 347                 sr_output_free(oa);
 348                 oa = NULL;
 349
 350                 if (outfile && outfile != stdout)
 351                         fclose(outfile);
 352
 353                 if (limit_samples) {
 354                         if (rcvd_samples_logic > 0 && rcvd_samples_logic < limit_samples)
 355                                 g_warning("Device only sent %" PRIu64 " samples.",
 356                                            rcvd_samples_logic);
 357                         else if (rcvd_samples_analog > 0 && rcvd_samples_analog < limit_samples)
 358                                 g_warning("Device only sent %" PRIu64 " samples.",
 359                                            rcvd_samples_analog);
 360                 }
 361         }
 362
 363 }
 364
 365 int opt_to_gvar(char *key, char *value, struct sr_config *src)
 366 {
 367         const struct sr_config_info *srci;
 368         double tmp_double, dlow, dhigh;
 369         uint64_t tmp_u64, p, q, low, high;
 370         GVariant *rational[2], *range[2];
 371         GVariantBuilder *vbl;
 372         gboolean tmp_bool;
 373         gchar **keyval;
 374         int ret;
 375
 376         if (!(srci = sr_config_info_name_get(key))) {
 377                 g_critical("Unknown device option '%s'.", (char *) key);
 378                 return -1;
 379         }
 380         src->key = srci->key;
 381
 382         if ((!value || strlen(value) == 0) &&
 383                 (srci->datatype != SR_T_BOOL)) {
 384                 g_critical("Option '%s' needs a value.", (char *)key);
 385                 return -1;
 386         }
 387
 388         ret = 0;
 389         switch (srci->datatype) {
 390         case SR_T_UINT64:
 391                 ret = sr_parse_sizestring(value, &tmp_u64);
 392                 if (ret != 0)
 393                         break;
 394                 src->data = g_variant_new_uint64(tmp_u64);
 395                 break;
 396         case SR_T_INT32:
 397                 ret = sr_parse_sizestring(value, &tmp_u64);
 398                 if (ret != 0)
 399                         break;
 400                 src->data = g_variant_new_int32(tmp_u64);
 401                 break;
 402         case SR_T_STRING:
 403                 src->data = g_variant_new_string(value);
 404                 break;
 405         case SR_T_BOOL:
 406                 if (!value)
 407                         tmp_bool = TRUE;
 408                 else
 409                         tmp_bool = sr_parse_boolstring(value);
 410                 src->data = g_variant_new_boolean(tmp_bool);
 411                 break;
 412         case SR_T_FLOAT:
 413                 tmp_double = strtof(value, NULL);
 414                 src->data = g_variant_new_double(tmp_double);
 415                 break;
 416         case SR_T_RATIONAL_PERIOD:
 417                 if ((ret = sr_parse_period(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_RATIONAL_VOLT:
 424                 if ((ret = sr_parse_voltage(value, &p, &q)) != SR_OK)
 425                         break;
 426                 rational[0] = g_variant_new_uint64(p);
 427                 rational[1] = g_variant_new_uint64(q);
 428                 src->data = g_variant_new_tuple(rational, 2);
 429                 break;
 430         case SR_T_UINT64_RANGE:
 431                 if (sscanf(value, "%"PRIu64"-%"PRIu64, &low, &high) != 2) {
 432                         ret = -1;
 433                         break;
 434                 } else {
 435                         range[0] = g_variant_new_uint64(low);
 436                         range[1] = g_variant_new_uint64(high);
 437                         src->data = g_variant_new_tuple(range, 2);
 438                 }
 439                 break;
 440         case SR_T_DOUBLE_RANGE:
 441                 if (sscanf(value, "%lf-%lf", &dlow, &dhigh) != 2) {
 442                         ret = -1;
 443                         break;
 444                 } else {
 445                         range[0] = g_variant_new_double(dlow);
 446                         range[1] = g_variant_new_double(dhigh);
 447                         src->data = g_variant_new_tuple(range, 2);
 448                 }
 449                 break;
 450         case SR_T_KEYVALUE:
 451                 /* Expects the argument to be in the form of key=value. */
 452                 keyval = g_strsplit(value, "=", 2);
 453                 if (!keyval[0] || !keyval[1]) {
 454                         g_strfreev(keyval);
 455                         ret = -1;
 456                         break;
 457                 } else {
 458                         vbl = g_variant_builder_new(G_VARIANT_TYPE_DICTIONARY);
 459                         g_variant_builder_add(vbl, "{ss}",
 460                                               keyval[0], keyval[1]);
 461                         src->data = g_variant_builder_end(vbl);
 462                         g_strfreev(keyval);
 463                 }
 464                 break;
 465         default:
 466                 g_critical("Unknown data type specified for option '%s' "
 467                            "(driver implementation bug?).", key);
 468                 ret = -1;
 469         }
 470
 471         if (ret < 0)
 472                 g_critical("Invalid value: '%s' for option '%s'", value, key);
 473
 474         return ret;
 475 }
 476
 477 int set_dev_options(struct sr_dev_inst *sdi, GHashTable *args)
 478 {
 479         struct sr_config src;
 480         struct sr_channel_group *cg;
 481         GHashTableIter iter;
 482         gpointer key, value;
 483         int ret;
 484
 485         g_hash_table_iter_init(&iter, args);
 486         while (g_hash_table_iter_next(&iter, &key, &value)) {
 487                 if ((ret = opt_to_gvar(key, value, &src)) != 0)
 488                         return ret;
 489                 cg = select_channel_group(sdi);
 490                 if ((ret = maybe_config_set(sr_dev_inst_driver_get(sdi), sdi, cg,
 491                                 src.key, src.data)) != SR_OK) {
 492                         g_critical("Failed to set device option '%s': %s.",
 493                                    (char *)key, sr_strerror(ret));
 494                         return ret;
 495                 }
 496         }
 497
 498         return SR_OK;
 499 }
 500
 501 void run_session(void)
 502 {
 503         GSList *devices, *real_devices, *sd;
 504         GHashTable *devargs;
 505         GVariant *gvar;
 506         struct sr_session *session;
 507         struct sr_trigger *trigger;
 508         struct sr_dev_inst *sdi;
 509         uint64_t min_samples, max_samples;
 510         gsize n_elements, i;
 511         const uint32_t *dev_opts;
 512         int is_demo_dev;
 513         struct sr_dev_driver *driver;
 514         const struct sr_transform *t;
 515
 516         devices = device_scan();
 517         if (!devices) {
 518                 g_critical("No devices found.");
 519                 return;
 520         }
 521
 522         real_devices = NULL;
 523         for (sd = devices; sd; sd = sd->next) {
 524                 sdi = sd->data;
 525
 526                 driver = sr_dev_inst_driver_get(sdi);
 527
 528                 if (sr_config_list(driver, sdi, NULL, SR_CONF_DEVICE_OPTIONS, &gvar) != SR_OK) {
 529                         g_critical("Failed to query list device options.");
 530                         return;
 531                 }
 532
 533                 dev_opts = g_variant_get_fixed_array(gvar, &n_elements, sizeof(uint32_t));
 534
 535                 is_demo_dev = 0;
 536                 for (i = 0; i < n_elements; i++) {
 537                         if (dev_opts[i] == SR_CONF_DEMO_DEV)
 538                                 is_demo_dev = 1;
 539                 }
 540
 541                 g_variant_unref(gvar);
 542
 543                 if (!is_demo_dev)
 544                         real_devices = g_slist_append(real_devices, sdi);
 545         }
 546
 547         if (g_slist_length(devices) > 1) {
 548                 if (g_slist_length(real_devices) != 1) {
 549                         g_critical("sigrok-cli only supports one device for capturing.");
 550                         return;
 551                 } else {
 552                         /* We only have one non-demo device. */
 553                         g_slist_free(devices);
 554                         devices = real_devices;
 555                         real_devices = NULL;
 556                 }
 557         }
 558
 559         sdi = devices->data;
 560         g_slist_free(devices);
 561         g_slist_free(real_devices);
 562
 563         sr_session_new(sr_ctx, &session);
 564         sr_session_datafeed_callback_add(session, datafeed_in, NULL);
 565
 566         if (sr_dev_open(sdi) != SR_OK) {
 567                 g_critical("Failed to open device.");
 568                 return;
 569         }
 570
 571         if (sr_session_dev_add(session, sdi) != SR_OK) {
 572                 g_critical("Failed to add device to session.");
 573                 sr_session_destroy(session);
 574                 return;
 575         }
 576
 577         if (opt_config) {
 578                 if ((devargs = parse_generic_arg(opt_config, FALSE))) {
 579                         if (set_dev_options(sdi, devargs) != SR_OK)
 580                                 return;
 581                         g_hash_table_destroy(devargs);
 582                 }
 583         }
 584
 585         if (select_channels(sdi) != SR_OK) {
 586                 g_critical("Failed to set channels.");
 587                 sr_session_destroy(session);
 588                 return;
 589         }
 590
 591         if (opt_triggers) {
 592                 if (!parse_triggerstring(sdi, opt_triggers, &trigger)) {
 593                         sr_session_destroy(session);
 594                         return;
 595                 }
 596                 if (sr_session_trigger_set(session, trigger) != SR_OK) {
 597                         sr_session_destroy(session);
 598                         return;
 599                 }
 600         }
 601
 602         if (opt_continuous) {
 603                 if (!sr_dev_has_option(sdi, SR_CONF_CONTINUOUS)) {
 604                         g_critical("This device does not support continuous sampling.");
 605                         sr_session_destroy(session);
 606                         return;
 607                 }
 608         }
 609
 610         if (opt_time) {
 611                 if (set_limit_time(sdi) != SR_OK) {
 612                         sr_session_destroy(session);
 613                         return;
 614                 }
 615         }
 616
 617         if (opt_samples) {
 618                 if ((sr_parse_sizestring(opt_samples, &limit_samples) != SR_OK)) {
 619                         g_critical("Invalid sample limit '%s'.", opt_samples);
 620                         sr_session_destroy(session);
 621                         return;
 622                 }
 623                 if (maybe_config_list(driver, sdi, NULL, SR_CONF_LIMIT_SAMPLES,
 624                                 &gvar) == SR_OK) {
 625                         /*
 626                          * The device has no compression, or compression is turned
 627                          * off, and publishes its sample memory size.
 628                          */
 629                         g_variant_get(gvar, "(tt)", &min_samples, &max_samples);
 630                         g_variant_unref(gvar);
 631                         if (limit_samples < min_samples) {
 632                                 g_critical("The device stores at least %"PRIu64
 633                                                 " samples with the current settings.", min_samples);
 634                         }
 635                         if (limit_samples > max_samples) {
 636                                 g_critical("The device can store only %"PRIu64
 637                                                 " samples with the current settings.", max_samples);
 638                         }
 639                 }
 640                 gvar = g_variant_new_uint64(limit_samples);
 641                 if (maybe_config_set(sr_dev_inst_driver_get(sdi), sdi, NULL, SR_CONF_LIMIT_SAMPLES, gvar) != SR_OK) {
 642                         g_critical("Failed to configure sample limit.");
 643                         sr_session_destroy(session);
 644                         return;
 645                 }
 646         }
 647
 648         if (opt_frames) {
 649                 if ((sr_parse_sizestring(opt_frames, &limit_frames) != SR_OK)) {
 650                         g_critical("Invalid sample limit '%s'.", opt_samples);
 651                         sr_session_destroy(session);
 652                         return;
 653                 }
 654                 gvar = g_variant_new_uint64(limit_frames);
 655                 if (maybe_config_set(sr_dev_inst_driver_get(sdi), sdi, NULL, SR_CONF_LIMIT_FRAMES, gvar) != SR_OK) {
 656                         g_critical("Failed to configure frame limit.");
 657                         sr_session_destroy(session);
 658                         return;
 659                 }
 660         }
 661
 662         if (!(t = setup_transform_module(sdi)))
 663                 g_critical("Failed to initialize transform module.");
 664
 665         if (sr_session_start(session) != SR_OK) {
 666                 g_critical("Failed to start session.");
 667                 sr_session_destroy(session);
 668                 return;
 669         }
 670
 671         if (opt_continuous)
 672                 add_anykey(session);
 673
 674         sr_session_run(session);
 675
 676         if (opt_continuous)
 677                 clear_anykey();
 678
 679         sr_session_datafeed_callback_remove_all(session);
 680         sr_session_destroy(session);
 681
 682 }