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 static char *srzip_and_filename = NULL;
  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 (config_key_has_cap(driver, sdi, NULL, SR_CONF_LIMIT_MSEC, SR_CONF_SET)) {
  49                 gvar = g_variant_new_uint64(time_msec);
  50                 if (sr_config_set(sdi, NULL, SR_CONF_LIMIT_MSEC, gvar) != SR_OK) {
  51                         g_critical("Failed to configure time limit.");
  52                         return SR_ERR;
  53                 }
  54         } else if (config_key_has_cap(driver, sdi, NULL, SR_CONF_SAMPLERATE,
  55                         SR_CONF_GET | SR_CONF_SET)) {
  56                 /* Convert to samples based on the samplerate. */
  57                 sr_config_get(driver, sdi, NULL, SR_CONF_SAMPLERATE, &gvar);
  58                 samplerate = g_variant_get_uint64(gvar);
  59                 g_variant_unref(gvar);
  60                 limit_samples = (samplerate) * time_msec / (uint64_t)1000;
  61                 if (limit_samples == 0) {
  62                         g_critical("Not enough time at this samplerate.");
  63                         return SR_ERR;
  64                 }
  65                 gvar = g_variant_new_uint64(limit_samples);
  66                 if (sr_config_set(sdi, NULL, SR_CONF_LIMIT_SAMPLES, gvar) != SR_OK) {
  67                         g_critical("Failed to configure time-based sample limit.");
  68                         return SR_ERR;
  69                 }
  70         } else {
  71                 g_critical("This device does not support time limits.");
  72                 return SR_ERR;
  73         }
  74
  75         return SR_OK;
  76 }
  77
  78 const struct sr_output *setup_output_format(const struct sr_dev_inst *sdi)
  79 {
  80         const struct sr_output_module *omod;
  81         const struct sr_option **options;
  82         const struct sr_output *o;
  83         GHashTable *fmtargs, *fmtopts;
  84         int size;
  85         char *fmtspec;
  86
  87         if (!opt_output_format) {
  88                 if (opt_output_file) {
  89                         size = strlen(opt_output_file) + 32;
  90                         srzip_and_filename = g_malloc(size);
  91                         snprintf(srzip_and_filename, size, "srzip:filename=%s", opt_output_file);
  92                         opt_output_format = srzip_and_filename;
  93                 } else {
  94                         opt_output_format = DEFAULT_OUTPUT_FORMAT;
  95                 }
  96         }
  97
  98         fmtargs = parse_generic_arg(opt_output_format, TRUE);
  99         fmtspec = g_hash_table_lookup(fmtargs, "sigrok_key");
 100         if (!fmtspec)
 101                 g_critical("Invalid output format.");
 102         if (!(omod = sr_output_find(fmtspec)))
 103                 g_critical("Unknown output module '%s'.", fmtspec);
 104         g_hash_table_remove(fmtargs, "sigrok_key");
 105         if ((options = sr_output_options_get(omod))) {
 106                 fmtopts = generic_arg_to_opt(options, fmtargs);
 107                 sr_output_options_free(options);
 108         } else
 109                 fmtopts = NULL;
 110         o = sr_output_new(omod, fmtopts, sdi);
 111         if (fmtopts)
 112                 g_hash_table_destroy(fmtopts);
 113         g_hash_table_destroy(fmtargs);
 114
 115         return o;
 116 }
 117
 118 const struct sr_transform *setup_transform_module(const struct sr_dev_inst *sdi)
 119 {
 120         const struct sr_transform_module *tmod;
 121         const struct sr_option **options;
 122         const struct sr_transform *t;
 123         GHashTable *fmtargs, *fmtopts;
 124         char *fmtspec;
 125
 126         if (!opt_transform_module)
 127                 opt_transform_module = "nop";
 128
 129         fmtargs = parse_generic_arg(opt_transform_module, TRUE);
 130         fmtspec = g_hash_table_lookup(fmtargs, "sigrok_key");
 131         if (!fmtspec)
 132                 g_critical("Invalid transform module.");
 133         if (!(tmod = sr_transform_find(fmtspec)))
 134                 g_critical("Unknown transform module '%s'.", fmtspec);
 135         g_hash_table_remove(fmtargs, "sigrok_key");
 136         if ((options = sr_transform_options_get(tmod))) {
 137                 fmtopts = generic_arg_to_opt(options, fmtargs);
 138                 sr_transform_options_free(options);
 139         } else
 140                 fmtopts = NULL;
 141         t = sr_transform_new(tmod, fmtopts, sdi);
 142         if (fmtopts)
 143                 g_hash_table_destroy(fmtopts);
 144         g_hash_table_destroy(fmtargs);
 145
 146         return t;
 147 }
 148
 149 void datafeed_in(const struct sr_dev_inst *sdi,
 150                 const struct sr_datafeed_packet *packet, void *cb_data)
 151 {
 152         const struct sr_datafeed_meta *meta;
 153         const struct sr_datafeed_logic *logic;
 154         const struct sr_datafeed_analog *analog;
 155         struct sr_session *session;
 156         struct sr_config *src;
 157         static const struct sr_output *o = NULL;
 158         static const struct sr_output *oa = NULL;
 159         static uint64_t rcvd_samples_logic = 0;
 160         static uint64_t rcvd_samples_analog = 0;
 161         static uint64_t samplerate = 0;
 162         static int triggered = 0;
 163         static FILE *outfile = NULL;
 164         GSList *l;
 165         GString *out;
 166         GVariant *gvar;
 167         uint64_t end_sample;
 168         uint64_t input_len;
 169         struct sr_dev_driver *driver;
 170
 171         driver = sr_dev_inst_driver_get(sdi);
 172
 173         /* If the first packet to come in isn't a header, don't even try. */
 174         if (packet->type != SR_DF_HEADER && !o)
 175                 return;
 176
 177         session = cb_data;
 178         switch (packet->type) {
 179         case SR_DF_HEADER:
 180                 g_debug("cli: Received SR_DF_HEADER.");
 181                 if (!(o = setup_output_format(sdi)))
 182                         g_critical("Failed to initialize output module.");
 183
 184                 /* Set up backup analog output module. */
 185                 oa = sr_output_new(sr_output_find("analog"), NULL, sdi);
 186
 187                 if (opt_output_file)
 188                         outfile = g_fopen(opt_output_file, "wb");
 189                 else
 190                         outfile = stdout;
 191
 192                 rcvd_samples_logic = rcvd_samples_analog = 0;
 193
 194                 if (maybe_config_get(driver, sdi, NULL, SR_CONF_SAMPLERATE,
 195                                 &gvar) == SR_OK) {
 196                         samplerate = g_variant_get_uint64(gvar);
 197                         g_variant_unref(gvar);
 198                 }
 199
 200 #ifdef HAVE_SRD
 201                 if (opt_pds) {
 202                         if (samplerate) {
 203                                 if (srd_session_metadata_set(srd_sess, SRD_CONF_SAMPLERATE,
 204                                                 g_variant_new_uint64(samplerate)) != SRD_OK) {
 205                                         g_critical("Failed to configure decode session.");
 206                                         break;
 207                                 }
 208                         }
 209                         if (srd_session_start(srd_sess) != SRD_OK) {
 210                                 g_critical("Failed to start decode session.");
 211                                 break;
 212                         }
 213                 }
 214 #endif
 215                 break;
 216
 217         case SR_DF_META:
 218                 g_debug("cli: Received SR_DF_META.");
 219                 meta = packet->payload;
 220                 for (l = meta->config; l; l = l->next) {
 221                         src = l->data;
 222                         switch (src->key) {
 223                         case SR_CONF_SAMPLERATE:
 224                                 samplerate = g_variant_get_uint64(src->data);
 225                                 g_debug("cli: Got samplerate %"PRIu64" Hz.", samplerate);
 226 #ifdef HAVE_SRD
 227                                 if (opt_pds) {
 228                                         if (srd_session_metadata_set(srd_sess, SRD_CONF_SAMPLERATE,
 229                                                         g_variant_new_uint64(samplerate)) != SRD_OK) {
 230                                                 g_critical("Failed to pass samplerate to decoder.");
 231                                         }
 232                                 }
 233 #endif
 234                                 break;
 235                         case SR_CONF_SAMPLE_INTERVAL:
 236                                 samplerate = g_variant_get_uint64(src->data);
 237                                 g_debug("cli: Got sample interval %"PRIu64" ms.", samplerate);
 238                                 break;
 239                         default:
 240                                 /* Unknown metadata is not an error. */
 241                                 break;
 242                         }
 243                 }
 244                 break;
 245
 246         case SR_DF_TRIGGER:
 247                 g_debug("cli: Received SR_DF_TRIGGER.");
 248                 triggered = 1;
 249                 break;
 250
 251         case SR_DF_LOGIC:
 252                 logic = packet->payload;
 253                 g_message("cli: Received SR_DF_LOGIC (%"PRIu64" bytes, unitsize = %d).",
 254                                 logic->length, logic->unitsize);
 255                 if (logic->length == 0)
 256                         break;
 257
 258                 /* Don't store any samples until triggered. */
 259                 if (opt_wait_trigger && !triggered)
 260                         break;
 261
 262                 if (limit_samples && rcvd_samples_logic >= limit_samples)
 263                         break;
 264
 265                 end_sample = rcvd_samples_logic + logic->length / logic->unitsize;
 266                 /* Cut off last packet according to the sample limit. */
 267                 if (limit_samples && end_sample > limit_samples)
 268                         end_sample = limit_samples;
 269                 input_len = (end_sample - rcvd_samples_logic) * logic->unitsize;
 270
 271                 if (opt_pds) {
 272 #ifdef HAVE_SRD
 273                         if (srd_session_send(srd_sess, rcvd_samples_logic, end_sample,
 274                                         logic->data, input_len) != SRD_OK)
 275                                 sr_session_stop(session);
 276 #endif
 277                 }
 278
 279                 rcvd_samples_logic = end_sample;
 280                 break;
 281
 282         case SR_DF_ANALOG:
 283                 analog = packet->payload;
 284                 g_message("cli: Received SR_DF_ANALOG (%d samples).", analog->num_samples);
 285                 if (analog->num_samples == 0)
 286                         break;
 287
 288                 if (limit_samples && rcvd_samples_analog >= limit_samples)
 289                         break;
 290
 291                 rcvd_samples_analog += analog->num_samples;
 292                 break;
 293
 294         case SR_DF_FRAME_BEGIN:
 295                 g_debug("cli: Received SR_DF_FRAME_BEGIN.");
 296                 break;
 297
 298         case SR_DF_FRAME_END:
 299                 g_debug("cli: Received SR_DF_FRAME_END.");
 300                 break;
 301
 302         default:
 303                 break;
 304         }
 305
 306         if (o && outfile && !opt_pds) {
 307                 if (sr_output_send(o, packet, &out) == SR_OK) {
 308                         if (!out || (out->len == 0
 309                                         && !opt_output_format
 310                                         && packet->type == SR_DF_ANALOG)) {
 311                                 /*
 312                                  * The user didn't specify an output module,
 313                                  * but needs to see this analog data.
 314                                  */
 315                                 sr_output_send(oa, packet, &out);
 316                         }
 317                         if (out && out->len > 0) {
 318                                 fwrite(out->str, 1, out->len, outfile);
 319                                 fflush(outfile);
 320                         }
 321                         if (out)
 322                                 g_string_free(out, TRUE);
 323                 }
 324         }
 325
 326         /*
 327          * SR_DF_END needs to be handled after the output module's receive()
 328          * is called, so it can properly clean up that module.
 329          */
 330         if (packet->type == SR_DF_END) {
 331                 g_debug("cli: Received SR_DF_END.");
 332
 333                 if (o) {
 334                         sr_output_free(o);
 335                         g_free(srzip_and_filename);
 336                 }
 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_config_info *srci;
 360         double tmp_double, dlow, dhigh;
 361         uint64_t tmp_u64, p, q, low, high;
 362         GVariant *rational[2], *range[2];
 363         GVariantBuilder *vbl;
 364         gboolean tmp_bool;
 365         gchar **keyval;
 366         int ret;
 367
 368         if (!(srci = sr_config_info_name_get(key))) {
 369                 g_critical("Unknown device option '%s'.", (char *) key);
 370                 return -1;
 371         }
 372         src->key = srci->key;
 373
 374         if ((!value || strlen(value) == 0) &&
 375                 (srci->datatype != SR_T_BOOL)) {
 376                 g_critical("Option '%s' needs a value.", (char *)key);
 377                 return -1;
 378         }
 379
 380         ret = 0;
 381         switch (srci->datatype) {
 382         case SR_T_UINT64:
 383                 ret = sr_parse_sizestring(value, &tmp_u64);
 384                 if (ret != 0)
 385                         break;
 386                 src->data = g_variant_new_uint64(tmp_u64);
 387                 break;
 388         case SR_T_INT32:
 389                 ret = sr_parse_sizestring(value, &tmp_u64);
 390                 if (ret != 0)
 391                         break;
 392                 src->data = g_variant_new_int32(tmp_u64);
 393                 break;
 394         case SR_T_STRING:
 395                 src->data = g_variant_new_string(value);
 396                 break;
 397         case SR_T_BOOL:
 398                 if (!value)
 399                         tmp_bool = TRUE;
 400                 else
 401                         tmp_bool = sr_parse_boolstring(value);
 402                 src->data = g_variant_new_boolean(tmp_bool);
 403                 break;
 404         case SR_T_FLOAT:
 405                 tmp_double = strtof(value, NULL);
 406                 src->data = g_variant_new_double(tmp_double);
 407                 break;
 408         case SR_T_RATIONAL_PERIOD:
 409                 if ((ret = sr_parse_period(value, &p, &q)) != SR_OK)
 410                         break;
 411                 rational[0] = g_variant_new_uint64(p);
 412                 rational[1] = g_variant_new_uint64(q);
 413                 src->data = g_variant_new_tuple(rational, 2);
 414                 break;
 415         case SR_T_RATIONAL_VOLT:
 416                 if ((ret = sr_parse_voltage(value, &p, &q)) != SR_OK)
 417                         break;
 418                 rational[0] = g_variant_new_uint64(p);
 419                 rational[1] = g_variant_new_uint64(q);
 420                 src->data = g_variant_new_tuple(rational, 2);
 421                 break;
 422         case SR_T_UINT64_RANGE:
 423                 if (sscanf(value, "%"PRIu64"-%"PRIu64, &low, &high) != 2) {
 424                         ret = -1;
 425                         break;
 426                 } else {
 427                         range[0] = g_variant_new_uint64(low);
 428                         range[1] = g_variant_new_uint64(high);
 429                         src->data = g_variant_new_tuple(range, 2);
 430                 }
 431                 break;
 432         case SR_T_DOUBLE_RANGE:
 433                 if (sscanf(value, "%lf-%lf", &dlow, &dhigh) != 2) {
 434                         ret = -1;
 435                         break;
 436                 } else {
 437                         range[0] = g_variant_new_double(dlow);
 438                         range[1] = g_variant_new_double(dhigh);
 439                         src->data = g_variant_new_tuple(range, 2);
 440                 }
 441                 break;
 442         case SR_T_KEYVALUE:
 443                 /* Expects the argument to be in the form of key=value. */
 444                 keyval = g_strsplit(value, "=", 2);
 445                 if (!keyval[0] || !keyval[1]) {
 446                         g_strfreev(keyval);
 447                         ret = -1;
 448                         break;
 449                 } else {
 450                         vbl = g_variant_builder_new(G_VARIANT_TYPE_DICTIONARY);
 451                         g_variant_builder_add(vbl, "{ss}",
 452                                               keyval[0], keyval[1]);
 453                         src->data = g_variant_builder_end(vbl);
 454                         g_strfreev(keyval);
 455                 }
 456                 break;
 457         default:
 458                 g_critical("Unknown data type specified for option '%s' "
 459                            "(driver implementation bug?).", key);
 460                 ret = -1;
 461         }
 462
 463         if (ret < 0)
 464                 g_critical("Invalid value: '%s' for option '%s'", value, key);
 465
 466         return ret;
 467 }
 468
 469 int set_dev_options(struct sr_dev_inst *sdi, GHashTable *args)
 470 {
 471         struct sr_config src;
 472         struct sr_channel_group *cg;
 473         GHashTableIter iter;
 474         gpointer key, value;
 475         int ret;
 476
 477         g_hash_table_iter_init(&iter, args);
 478         while (g_hash_table_iter_next(&iter, &key, &value)) {
 479                 if ((ret = opt_to_gvar(key, value, &src)) != 0)
 480                         return ret;
 481                 cg = select_channel_group(sdi);
 482                 if ((ret = maybe_config_set(sr_dev_inst_driver_get(sdi), sdi, cg,
 483                                 src.key, src.data)) != SR_OK) {
 484                         g_critical("Failed to set device option '%s': %s.",
 485                                    (char *)key, sr_strerror(ret));
 486                         return ret;
 487                 }
 488         }
 489
 490         return SR_OK;
 491 }
 492
 493 void run_session(void)
 494 {
 495         GSList *devices, *real_devices, *sd;
 496         GHashTable *devargs;
 497         GVariant *gvar;
 498         struct sr_session *session;
 499         struct sr_trigger *trigger;
 500         struct sr_dev_inst *sdi;
 501         uint64_t min_samples, max_samples;
 502         gsize n_elements, i;
 503         const uint32_t *dev_opts;
 504         int is_demo_dev;
 505         struct sr_dev_driver *driver;
 506         const struct sr_transform *t;
 507
 508         devices = device_scan();
 509         if (!devices) {
 510                 g_critical("No devices found.");
 511                 return;
 512         }
 513
 514         real_devices = NULL;
 515         for (sd = devices; sd; sd = sd->next) {
 516                 sdi = sd->data;
 517
 518                 driver = sr_dev_inst_driver_get(sdi);
 519
 520                 if (sr_config_list(driver, sdi, NULL, SR_CONF_DEVICE_OPTIONS, &gvar) != SR_OK) {
 521                         g_critical("Failed to query list device options.");
 522                         return;
 523                 }
 524
 525                 dev_opts = g_variant_get_fixed_array(gvar, &n_elements, sizeof(uint32_t));
 526
 527                 is_demo_dev = 0;
 528                 for (i = 0; i < n_elements; i++) {
 529                         if (dev_opts[i] == SR_CONF_DEMO_DEV)
 530                                 is_demo_dev = 1;
 531                 }
 532
 533                 g_variant_unref(gvar);
 534
 535                 if (!is_demo_dev)
 536                         real_devices = g_slist_append(real_devices, sdi);
 537         }
 538
 539         if (g_slist_length(devices) > 1) {
 540                 if (g_slist_length(real_devices) != 1) {
 541                         g_critical("sigrok-cli only supports one device for capturing.");
 542                         return;
 543                 } else {
 544                         /* We only have one non-demo device. */
 545                         g_slist_free(devices);
 546                         devices = real_devices;
 547                         real_devices = NULL;
 548                 }
 549         }
 550
 551         sdi = devices->data;
 552         g_slist_free(devices);
 553         g_slist_free(real_devices);
 554
 555         sr_session_new(sr_ctx, &session);
 556         sr_session_datafeed_callback_add(session, datafeed_in, NULL);
 557
 558         if (sr_dev_open(sdi) != SR_OK) {
 559                 g_critical("Failed to open device.");
 560                 return;
 561         }
 562
 563         if (sr_session_dev_add(session, sdi) != SR_OK) {
 564                 g_critical("Failed to add device to session.");
 565                 sr_session_destroy(session);
 566                 return;
 567         }
 568
 569         if (opt_config) {
 570                 if ((devargs = parse_generic_arg(opt_config, FALSE))) {
 571                         if (set_dev_options(sdi, devargs) != SR_OK)
 572                                 return;
 573                         g_hash_table_destroy(devargs);
 574                 }
 575         }
 576
 577         if (select_channels(sdi) != SR_OK) {
 578                 g_critical("Failed to set channels.");
 579                 sr_session_destroy(session);
 580                 return;
 581         }
 582
 583         if (opt_triggers) {
 584                 if (!parse_triggerstring(sdi, opt_triggers, &trigger)) {
 585                         sr_session_destroy(session);
 586                         return;
 587                 }
 588                 if (sr_session_trigger_set(session, trigger) != SR_OK) {
 589                         sr_session_destroy(session);
 590                         return;
 591                 }
 592         }
 593
 594         if (opt_continuous) {
 595                 if (!sr_dev_has_option(sdi, SR_CONF_CONTINUOUS)) {
 596                         g_critical("This device does not support continuous sampling.");
 597                         sr_session_destroy(session);
 598                         return;
 599                 }
 600         }
 601
 602         if (opt_time) {
 603                 if (set_limit_time(sdi) != SR_OK) {
 604                         sr_session_destroy(session);
 605                         return;
 606                 }
 607         }
 608
 609         if (opt_samples) {
 610                 if ((sr_parse_sizestring(opt_samples, &limit_samples) != SR_OK)) {
 611                         g_critical("Invalid sample limit '%s'.", opt_samples);
 612                         sr_session_destroy(session);
 613                         return;
 614                 }
 615                 if (maybe_config_list(driver, sdi, NULL, SR_CONF_LIMIT_SAMPLES,
 616                                 &gvar) == SR_OK) {
 617                         /*
 618                          * The device has no compression, or compression is turned
 619                          * off, and publishes its sample memory size.
 620                          */
 621                         g_variant_get(gvar, "(tt)", &min_samples, &max_samples);
 622                         g_variant_unref(gvar);
 623                         if (limit_samples < min_samples) {
 624                                 g_critical("The device stores at least %"PRIu64
 625                                                 " samples with the current settings.", min_samples);
 626                         }
 627                         if (limit_samples > max_samples) {
 628                                 g_critical("The device can store only %"PRIu64
 629                                                 " samples with the current settings.", max_samples);
 630                         }
 631                 }
 632                 gvar = g_variant_new_uint64(limit_samples);
 633                 if (maybe_config_set(sr_dev_inst_driver_get(sdi), sdi, NULL, SR_CONF_LIMIT_SAMPLES, gvar) != SR_OK) {
 634                         g_critical("Failed to configure sample limit.");
 635                         sr_session_destroy(session);
 636                         return;
 637                 }
 638         }
 639
 640         if (opt_frames) {
 641                 if ((sr_parse_sizestring(opt_frames, &limit_frames) != SR_OK)) {
 642                         g_critical("Invalid sample limit '%s'.", opt_samples);
 643                         sr_session_destroy(session);
 644                         return;
 645                 }
 646                 gvar = g_variant_new_uint64(limit_frames);
 647                 if (maybe_config_set(sr_dev_inst_driver_get(sdi), sdi, NULL, SR_CONF_LIMIT_FRAMES, gvar) != SR_OK) {
 648                         g_critical("Failed to configure frame limit.");
 649                         sr_session_destroy(session);
 650                         return;
 651                 }
 652         }
 653
 654         if (!(t = setup_transform_module(sdi)))
 655                 g_critical("Failed to initialize transform module.");
 656
 657         if (sr_session_start(session) != SR_OK) {
 658                 g_critical("Failed to start session.");
 659                 sr_session_destroy(session);
 660                 return;
 661         }
 662
 663         if (opt_continuous)
 664                 add_anykey(session);
 665
 666         sr_session_run(session);
 667
 668         if (opt_continuous)
 669                 clear_anykey();
 670
 671         sr_session_datafeed_callback_remove_all(session);
 672         sr_session_destroy(session);
 673
 674 }