session.c

   1 /*
   2  * This file is part of the sigrok-cli project.
   3  *
   4  * Copyright (C) 2013 Bert Vermeulen <bert@biot.com>
   5  *
   6  * This program is free software: you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation, either version 3 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include <config.h>
  21 #include <glib.h>
  22 #include <glib/gstdio.h>
  23 #include <string.h>
  24 #include <stdlib.h>
  25 #include "sigrok-cli.h"
  26
  27 static uint64_t limit_samples = 0;
  28 static uint64_t limit_frames = 0;
  29
  30 #ifdef HAVE_SRD
  31 extern struct srd_session *srd_sess;
  32 #endif
  33
  34 static int set_limit_time(const struct sr_dev_inst *sdi)
  35 {
  36         GVariant *gvar;
  37         uint64_t time_msec;
  38         uint64_t samplerate;
  39         struct sr_dev_driver *driver;
  40
  41         driver = sr_dev_inst_driver_get(sdi);
  42
  43         if (!(time_msec = sr_parse_timestring(opt_time))) {
  44                 g_critical("Invalid time '%s'", opt_time);
  45                 return SR_ERR;
  46         }
  47
  48         if (sr_dev_config_capabilities_list(sdi, NULL, SR_CONF_LIMIT_MSEC)
  49                         & SR_CONF_SET) {
  50                 gvar = g_variant_new_uint64(time_msec);
  51                 if (sr_config_set(sdi, NULL, SR_CONF_LIMIT_MSEC, gvar) != SR_OK) {
  52                         g_critical("Failed to configure time limit.");
  53                         return SR_ERR;
  54                 }
  55         } else if (sr_dev_config_capabilities_list(sdi, NULL, SR_CONF_SAMPLERATE)
  56                         & (SR_CONF_GET | SR_CONF_SET)) {
  57                 /* Convert to samples based on the samplerate. */
  58                 sr_config_get(driver, sdi, NULL, SR_CONF_SAMPLERATE, &gvar);
  59                 samplerate = g_variant_get_uint64(gvar);
  60                 g_variant_unref(gvar);
  61                 limit_samples = (samplerate) * time_msec / (uint64_t)1000;
  62                 if (limit_samples == 0) {
  63                         g_critical("Not enough time at this samplerate.");
  64                         return SR_ERR;
  65                 }
  66                 gvar = g_variant_new_uint64(limit_samples);
  67                 if (sr_config_set(sdi, NULL, SR_CONF_LIMIT_SAMPLES, gvar) != SR_OK) {
  68                         g_critical("Failed to configure time-based sample limit.");
  69                         return SR_ERR;
  70                 }
  71         } else {
  72                 g_critical("This device does not support time limits.");
  73                 return SR_ERR;
  74         }
  75
  76         return SR_OK;
  77 }
  78
  79 const struct sr_output *setup_output_format(const struct sr_dev_inst *sdi, FILE **outfile)
  80 {
  81         const struct sr_output_module *omod;
  82         const struct sr_option **options;
  83         const struct sr_output *o;
  84         GHashTable *fmtargs, *fmtopts;
  85         char *fmtspec;
  86
  87         if (!opt_output_format) {
  88                 if (opt_output_file) {
  89                         opt_output_format = DEFAULT_OUTPUT_FORMAT_FILE;
  90                 } else {
  91                         opt_output_format = DEFAULT_OUTPUT_FORMAT_NOFILE;
  92                 }
  93         }
  94
  95         fmtargs = parse_generic_arg(opt_output_format, TRUE);
  96         fmtspec = g_hash_table_lookup(fmtargs, "sigrok_key");
  97         if (!fmtspec)
  98                 g_critical("Invalid output format.");
  99         if (!(omod = sr_output_find(fmtspec)))
 100                 g_critical("Unknown output module '%s'.", fmtspec);
 101         g_hash_table_remove(fmtargs, "sigrok_key");
 102         if ((options = sr_output_options_get(omod))) {
 103                 fmtopts = generic_arg_to_opt(options, fmtargs);
 104                 sr_output_options_free(options);
 105         } else
 106                 fmtopts = NULL;
 107         o = sr_output_new(omod, fmtopts, sdi, opt_output_file);
 108
 109         if (opt_output_file) {
 110                 if (!sr_output_test_flag(omod, SR_OUTPUT_INTERNAL_IO_HANDLING))
 111                         *outfile = g_fopen(opt_output_file, "wb");
 112                 else
 113                         *outfile = NULL;
 114         } else {
 115                 *outfile = stdout;
 116         }
 117
 118         if (fmtopts)
 119                 g_hash_table_destroy(fmtopts);
 120         g_hash_table_destroy(fmtargs);
 121
 122         return o;
 123 }
 124
 125 const struct sr_transform *setup_transform_module(const struct sr_dev_inst *sdi)
 126 {
 127         const struct sr_transform_module *tmod;
 128         const struct sr_option **options;
 129         const struct sr_transform *t;
 130         GHashTable *fmtargs, *fmtopts;
 131         char *fmtspec;
 132
 133         fmtargs = parse_generic_arg(opt_transform_module, TRUE);
 134         fmtspec = g_hash_table_lookup(fmtargs, "sigrok_key");
 135         if (!fmtspec)
 136                 g_critical("Invalid transform module.");
 137         if (!(tmod = sr_transform_find(fmtspec)))
 138                 g_critical("Unknown transform module '%s'.", fmtspec);
 139         g_hash_table_remove(fmtargs, "sigrok_key");
 140         if ((options = sr_transform_options_get(tmod))) {
 141                 fmtopts = generic_arg_to_opt(options, fmtargs);
 142                 sr_transform_options_free(options);
 143         } else
 144                 fmtopts = NULL;
 145         t = sr_transform_new(tmod, fmtopts, sdi);
 146         if (fmtopts)
 147                 g_hash_table_destroy(fmtopts);
 148         g_hash_table_destroy(fmtargs);
 149
 150         return t;
 151 }
 152
 153 void datafeed_in(const struct sr_dev_inst *sdi,
 154                 const struct sr_datafeed_packet *packet, void *cb_data)
 155 {
 156         const struct sr_datafeed_meta *meta;
 157         const struct sr_datafeed_logic *logic;
 158         const struct sr_datafeed_analog *analog;
 159         struct sr_session *session;
 160         struct sr_config *src;
 161         static const struct sr_output *o = NULL;
 162         static const struct sr_output *oa = NULL;
 163         static uint64_t rcvd_samples_logic = 0;
 164         static uint64_t rcvd_samples_analog = 0;
 165         static uint64_t samplerate = 0;
 166         static int triggered = 0;
 167         static FILE *outfile = NULL;
 168         GSList *l;
 169         GString *out;
 170         GVariant *gvar;
 171         uint64_t end_sample;
 172         uint64_t input_len;
 173         struct sr_dev_driver *driver;
 174
 175         /* Avoid warnings when building without decoder support. */
 176         (void)session;
 177         (void)input_len;
 178
 179         driver = sr_dev_inst_driver_get(sdi);
 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)
 183                 return;
 184
 185         session = cb_data;
 186         switch (packet->type) {
 187         case SR_DF_HEADER:
 188                 g_debug("cli: Received SR_DF_HEADER.");
 189                 if (!(o = setup_output_format(sdi, &outfile)))
 190                         g_critical("Failed to initialize output module.");
 191
 192                 /* Set up backup analog output module. */
 193                 if (outfile)
 194                         oa = sr_output_new(sr_output_find("analog"), NULL,
 195                                         sdi, NULL);
 196
 197                 rcvd_samples_logic = rcvd_samples_analog = 0;
 198
 199                 if (maybe_config_get(driver, sdi, NULL, SR_CONF_SAMPLERATE,
 200                                 &gvar) == SR_OK) {
 201                         samplerate = g_variant_get_uint64(gvar);
 202                         g_variant_unref(gvar);
 203                 }
 204
 205 #ifdef HAVE_SRD
 206                 if (opt_pds) {
 207                         if (samplerate) {
 208                                 if (srd_session_metadata_set(srd_sess, SRD_CONF_SAMPLERATE,
 209                                                 g_variant_new_uint64(samplerate)) != SRD_OK) {
 210                                         g_critical("Failed to configure decode session.");
 211                                         break;
 212                                 }
 213                         }
 214                         if (srd_session_start(srd_sess) != SRD_OK) {
 215                                 g_critical("Failed to start decode session.");
 216                                 break;
 217                         }
 218                 }
 219 #endif
 220                 break;
 221
 222         case SR_DF_META:
 223                 g_debug("cli: Received SR_DF_META.");
 224                 meta = packet->payload;
 225                 for (l = meta->config; l; l = l->next) {
 226                         src = l->data;
 227                         switch (src->key) {
 228                         case SR_CONF_SAMPLERATE:
 229                                 samplerate = g_variant_get_uint64(src->data);
 230                                 g_debug("cli: Got samplerate %"PRIu64" Hz.", samplerate);
 231 #ifdef HAVE_SRD
 232                                 if (opt_pds) {
 233                                         if (srd_session_metadata_set(srd_sess, SRD_CONF_SAMPLERATE,
 234                                                         g_variant_new_uint64(samplerate)) != SRD_OK) {
 235                                                 g_critical("Failed to pass samplerate to decoder.");
 236                                         }
 237                                 }
 238 #endif
 239                                 break;
 240                         case SR_CONF_SAMPLE_INTERVAL:
 241                                 samplerate = g_variant_get_uint64(src->data);
 242                                 g_debug("cli: Got sample interval %"PRIu64" ms.", samplerate);
 243                                 break;
 244                         default:
 245                                 /* Unknown metadata is not an error. */
 246                                 break;
 247                         }
 248                 }
 249                 break;
 250
 251         case SR_DF_TRIGGER:
 252                 g_debug("cli: Received SR_DF_TRIGGER.");
 253                 triggered = 1;
 254                 break;
 255
 256         case SR_DF_LOGIC:
 257                 logic = packet->payload;
 258                 g_message("cli: Received SR_DF_LOGIC (%"PRIu64" bytes, unitsize = %d).",
 259                                 logic->length, logic->unitsize);
 260                 if (logic->length == 0)
 261                         break;
 262
 263                 /* Don't store any samples until triggered. */
 264                 if (opt_wait_trigger && !triggered)
 265                         break;
 266
 267                 if (limit_samples && rcvd_samples_logic >= limit_samples)
 268                         break;
 269
 270                 end_sample = rcvd_samples_logic + logic->length / logic->unitsize;
 271                 /* Cut off last packet according to the sample limit. */
 272                 if (limit_samples && end_sample > limit_samples)
 273                         end_sample = limit_samples;
 274                 input_len = (end_sample - rcvd_samples_logic) * logic->unitsize;
 275
 276                 if (opt_pds) {
 277 #ifdef HAVE_SRD
 278                         if (srd_session_send(srd_sess, rcvd_samples_logic, end_sample,
 279                                         logic->data, input_len, logic->unitsize) != SRD_OK)
 280                                 sr_session_stop(session);
 281 #endif
 282                 }
 283
 284                 rcvd_samples_logic = end_sample;
 285                 break;
 286
 287         case SR_DF_ANALOG:
 288                 analog = packet->payload;
 289                 g_message("cli: Received SR_DF_ANALOG (%d samples).", analog->num_samples);
 290                 if (analog->num_samples == 0)
 291                         break;
 292
 293                 if (limit_samples && rcvd_samples_analog >= limit_samples)
 294                         break;
 295
 296                 rcvd_samples_analog += analog->num_samples;
 297                 break;
 298
 299         case SR_DF_FRAME_BEGIN:
 300                 g_debug("cli: Received SR_DF_FRAME_BEGIN.");
 301                 break;
 302
 303         case SR_DF_FRAME_END:
 304                 g_debug("cli: Received SR_DF_FRAME_END.");
 305                 break;
 306
 307         default:
 308                 break;
 309         }
 310
 311         if (o && !opt_pds) {
 312                 if (sr_output_send(o, packet, &out) == SR_OK) {
 313                         if (oa && !out) {
 314                                 /*
 315                                  * The user didn't specify an output module,
 316                                  * but needs to see this analog data.
 317                                  */
 318                                 sr_output_send(oa, packet, &out);
 319                         }
 320                         if (outfile && out && out->len > 0) {
 321                                 fwrite(out->str, 1, out->len, outfile);
 322                                 fflush(outfile);
 323                         }
 324                         if (out)
 325                                 g_string_free(out, TRUE);
 326                 }
 327         }
 328
 329         /*
 330          * SR_DF_END needs to be handled after the output module's receive()
 331          * is called, so it can properly clean up that module.
 332          */
 333         if (packet->type == SR_DF_END) {
 334                 g_debug("cli: Received SR_DF_END.");
 335
 336                 if (o)
 337                         sr_output_free(o);
 338                 o = NULL;
 339
 340                 if (oa)
 341                         sr_output_free(oa);
 342                 oa = NULL;
 343
 344                 if (outfile && outfile != stdout)
 345                         fclose(outfile);
 346
 347                 if (limit_samples) {
 348                         if (rcvd_samples_logic > 0 && rcvd_samples_logic < limit_samples)
 349                                 g_warning("Device only sent %" PRIu64 " samples.",
 350                                            rcvd_samples_logic);
 351                         else if (rcvd_samples_analog > 0 && rcvd_samples_analog < limit_samples)
 352                                 g_warning("Device only sent %" PRIu64 " samples.",
 353                                            rcvd_samples_analog);
 354                 }
 355         }
 356
 357 }
 358
 359 int opt_to_gvar(char *key, char *value, struct sr_config *src)
 360 {
 361         const struct sr_key_info *srci, *srmqi;
 362         double tmp_double, dlow, dhigh;
 363         uint64_t tmp_u64, p, q, low, high, mqflags;
 364         uint32_t mq;
 365         GVariant *rational[2], *range[2], *gtup[2];
 366         GVariantBuilder *vbl;
 367         gboolean tmp_bool;
 368         gchar **keyval;
 369         int ret, i;
 370
 371         if (!(srci = sr_key_info_name_get(SR_KEY_CONFIG, key))) {
 372                 g_critical("Unknown device option '%s'.", (char *) key);
 373                 return -1;
 374         }
 375         src->key = srci->key;
 376
 377         if ((!value || strlen(value) == 0) &&
 378                 (srci->datatype != SR_T_BOOL)) {
 379                 g_critical("Option '%s' needs a value.", (char *)key);
 380                 return -1;
 381         }
 382
 383         ret = 0;
 384         switch (srci->datatype) {
 385         case SR_T_UINT64:
 386                 ret = sr_parse_sizestring(value, &tmp_u64);
 387                 if (ret != 0)
 388                         break;
 389                 src->data = g_variant_new_uint64(tmp_u64);
 390                 break;
 391         case SR_T_INT32:
 392                 ret = sr_parse_sizestring(value, &tmp_u64);
 393                 if (ret != 0)
 394                         break;
 395                 src->data = g_variant_new_int32(tmp_u64);
 396                 break;
 397         case SR_T_STRING:
 398                 src->data = g_variant_new_string(value);
 399                 break;
 400         case SR_T_BOOL:
 401                 if (!value)
 402                         tmp_bool = TRUE;
 403                 else
 404                         tmp_bool = sr_parse_boolstring(value);
 405                 src->data = g_variant_new_boolean(tmp_bool);
 406                 break;
 407         case SR_T_FLOAT:
 408                 tmp_double = strtof(value, NULL);
 409                 src->data = g_variant_new_double(tmp_double);
 410                 break;
 411         case SR_T_RATIONAL_PERIOD:
 412                 if ((ret = sr_parse_period(value, &p, &q)) != SR_OK)
 413                         break;
 414                 rational[0] = g_variant_new_uint64(p);
 415                 rational[1] = g_variant_new_uint64(q);
 416                 src->data = g_variant_new_tuple(rational, 2);
 417                 break;
 418         case SR_T_RATIONAL_VOLT:
 419                 if ((ret = sr_parse_voltage(value, &p, &q)) != SR_OK)
 420                         break;
 421                 rational[0] = g_variant_new_uint64(p);
 422                 rational[1] = g_variant_new_uint64(q);
 423                 src->data = g_variant_new_tuple(rational, 2);
 424                 break;
 425         case SR_T_UINT64_RANGE:
 426                 if (sscanf(value, "%"PRIu64"-%"PRIu64, &low, &high) != 2) {
 427                         ret = -1;
 428                         break;
 429                 } else {
 430                         range[0] = g_variant_new_uint64(low);
 431                         range[1] = g_variant_new_uint64(high);
 432                         src->data = g_variant_new_tuple(range, 2);
 433                 }
 434                 break;
 435         case SR_T_DOUBLE_RANGE:
 436                 if (sscanf(value, "%lf-%lf", &dlow, &dhigh) != 2) {
 437                         ret = -1;
 438                         break;
 439                 } else {
 440                         range[0] = g_variant_new_double(dlow);
 441                         range[1] = g_variant_new_double(dhigh);
 442                         src->data = g_variant_new_tuple(range, 2);
 443                 }
 444                 break;
 445         case SR_T_KEYVALUE:
 446                 /* Expects the argument to be in the form of key=value. */
 447                 keyval = g_strsplit(value, "=", 2);
 448                 if (!keyval[0] || !keyval[1]) {
 449                         g_strfreev(keyval);
 450                         ret = -1;
 451                         break;
 452                 } else {
 453                         vbl = g_variant_builder_new(G_VARIANT_TYPE_DICTIONARY);
 454                         g_variant_builder_add(vbl, "{ss}",
 455                                               keyval[0], keyval[1]);
 456                         src->data = g_variant_builder_end(vbl);
 457                         g_strfreev(keyval);
 458                 }
 459                 break;
 460         case SR_T_MQ:
 461                 /*
 462                   Argument is MQ id e.g. ("voltage") optionally followed by one
 463                   or more /<mqflag> e.g. "/ac".
 464                  */
 465                 keyval = g_strsplit(value, "/", 0);
 466                 if (!keyval[0] || !(srmqi = sr_key_info_name_get(SR_KEY_MQ, keyval[0]))) {
 467                         g_strfreev(keyval);
 468                         ret = -1;
 469                         break;
 470                 }
 471                 mq = srmqi->key;
 472                 mqflags = 0;
 473                 for (i = 1; keyval[i]; i++) {
 474                         if (!(srmqi = sr_key_info_name_get(SR_KEY_MQFLAGS, keyval[i]))) {
 475                                 ret = -1;
 476                                 break;
 477                         }
 478                         mqflags |= srmqi->key;
 479                 }
 480                 g_strfreev(keyval);
 481                 if (ret != -1) {
 482                         gtup[0] = g_variant_new_uint32(mq);
 483                         gtup[1] = g_variant_new_uint64(mqflags);
 484                         src->data = g_variant_new_tuple(gtup, 2);
 485                 }
 486                 break;
 487         default:
 488                 g_critical("Unknown data type specified for option '%s' "
 489                            "(driver implementation bug?).", key);
 490                 ret = -1;
 491         }
 492
 493         if (ret < 0)
 494                 g_critical("Invalid value: '%s' for option '%s'", value, key);
 495
 496         return ret;
 497 }
 498
 499 int set_dev_options(struct sr_dev_inst *sdi, GHashTable *args)
 500 {
 501         struct sr_config src;
 502         struct sr_channel_group *cg;
 503         GHashTableIter iter;
 504         gpointer key, value;
 505         int ret;
 506
 507         g_hash_table_iter_init(&iter, args);
 508         while (g_hash_table_iter_next(&iter, &key, &value)) {
 509                 if ((ret = opt_to_gvar(key, value, &src)) != 0)
 510                         return ret;
 511                 cg = select_channel_group(sdi);
 512                 if ((ret = maybe_config_set(sr_dev_inst_driver_get(sdi), sdi, cg,
 513                                 src.key, src.data)) != SR_OK) {
 514                         g_critical("Failed to set device option '%s': %s.",
 515                                    (char *)key, sr_strerror(ret));
 516                         return ret;
 517                 }
 518         }
 519
 520         return SR_OK;
 521 }
 522
 523 void run_session(void)
 524 {
 525         GSList *devices, *real_devices, *sd;
 526         GHashTable *devargs;
 527         GVariant *gvar;
 528         struct sr_session *session;
 529         struct sr_trigger *trigger;
 530         struct sr_dev_inst *sdi;
 531         uint64_t min_samples, max_samples;
 532         GArray *drv_opts;
 533         guint i;
 534         int is_demo_dev;
 535         struct sr_dev_driver *driver;
 536         const struct sr_transform *t;
 537         GMainLoop *main_loop;
 538
 539         devices = device_scan();
 540         if (!devices) {
 541                 g_critical("No devices found.");
 542                 return;
 543         }
 544
 545         real_devices = NULL;
 546         for (sd = devices; sd; sd = sd->next) {
 547                 sdi = sd->data;
 548
 549                 driver = sr_dev_inst_driver_get(sdi);
 550
 551                 if (!(drv_opts = sr_dev_options(driver, NULL, NULL))) {
 552                         g_critical("Failed to query list of driver options.");
 553                         return;
 554                 }
 555
 556                 is_demo_dev = 0;
 557                 for (i = 0; i < drv_opts->len; i++) {
 558                         if (g_array_index(drv_opts, uint32_t, i) == SR_CONF_DEMO_DEV)
 559                                 is_demo_dev = 1;
 560                 }
 561
 562                 g_array_free(drv_opts, TRUE);
 563
 564                 if (!is_demo_dev)
 565                         real_devices = g_slist_append(real_devices, sdi);
 566         }
 567
 568         if (g_slist_length(devices) > 1) {
 569                 if (g_slist_length(real_devices) != 1) {
 570                         g_critical("sigrok-cli only supports one device for capturing.");
 571                         return;
 572                 } else {
 573                         /* We only have one non-demo device. */
 574                         g_slist_free(devices);
 575                         devices = real_devices;
 576                         real_devices = NULL;
 577                 }
 578         }
 579
 580         sdi = devices->data;
 581         g_slist_free(devices);
 582         g_slist_free(real_devices);
 583
 584         sr_session_new(sr_ctx, &session);
 585         sr_session_datafeed_callback_add(session, datafeed_in, NULL);
 586
 587         if (sr_dev_open(sdi) != SR_OK) {
 588                 g_critical("Failed to open device.");
 589                 return;
 590         }
 591
 592         if (sr_session_dev_add(session, sdi) != SR_OK) {
 593                 g_critical("Failed to add device to session.");
 594                 sr_session_destroy(session);
 595                 return;
 596         }
 597
 598         if (opt_config) {
 599                 if ((devargs = parse_generic_arg(opt_config, FALSE))) {
 600                         if (set_dev_options(sdi, devargs) != SR_OK)
 601                                 return;
 602                         g_hash_table_destroy(devargs);
 603                 }
 604         }
 605
 606         if (select_channels(sdi) != SR_OK) {
 607                 g_critical("Failed to set channels.");
 608                 sr_session_destroy(session);
 609                 return;
 610         }
 611
 612         trigger = NULL;
 613         if (opt_triggers) {
 614                 if (!parse_triggerstring(sdi, opt_triggers, &trigger)) {
 615                         sr_session_destroy(session);
 616                         return;
 617                 }
 618                 if (sr_session_trigger_set(session, trigger) != SR_OK) {
 619                         sr_session_destroy(session);
 620                         return;
 621                 }
 622         }
 623
 624         if (opt_continuous) {
 625                 if (!sr_dev_has_option(sdi, SR_CONF_CONTINUOUS)) {
 626                         g_critical("This device does not support continuous sampling.");
 627                         sr_session_destroy(session);
 628                         return;
 629                 }
 630         }
 631
 632         if (opt_time) {
 633                 if (set_limit_time(sdi) != SR_OK) {
 634                         sr_session_destroy(session);
 635                         return;
 636                 }
 637         }
 638
 639         if (opt_samples) {
 640                 if ((sr_parse_sizestring(opt_samples, &limit_samples) != SR_OK)) {
 641                         g_critical("Invalid sample limit '%s'.", opt_samples);
 642                         sr_session_destroy(session);
 643                         return;
 644                 }
 645                 if (maybe_config_list(driver, sdi, NULL, SR_CONF_LIMIT_SAMPLES,
 646                                 &gvar) == SR_OK) {
 647                         /*
 648                          * The device has no compression, or compression is turned
 649                          * off, and publishes its sample memory size.
 650                          */
 651                         g_variant_get(gvar, "(tt)", &min_samples, &max_samples);
 652                         g_variant_unref(gvar);
 653                         if (limit_samples < min_samples) {
 654                                 g_critical("The device stores at least %"PRIu64
 655                                                 " samples with the current settings.", min_samples);
 656                         }
 657                         if (limit_samples > max_samples) {
 658                                 g_critical("The device can store only %"PRIu64
 659                                                 " samples with the current settings.", max_samples);
 660                         }
 661                 }
 662                 gvar = g_variant_new_uint64(limit_samples);
 663                 if (maybe_config_set(sr_dev_inst_driver_get(sdi), sdi, NULL, SR_CONF_LIMIT_SAMPLES, gvar) != SR_OK) {
 664                         g_critical("Failed to configure sample limit.");
 665                         sr_session_destroy(session);
 666                         return;
 667                 }
 668         }
 669
 670         if (opt_frames) {
 671                 if ((sr_parse_sizestring(opt_frames, &limit_frames) != SR_OK)) {
 672                         g_critical("Invalid sample limit '%s'.", opt_samples);
 673                         sr_session_destroy(session);
 674                         return;
 675                 }
 676                 gvar = g_variant_new_uint64(limit_frames);
 677                 if (maybe_config_set(sr_dev_inst_driver_get(sdi), sdi, NULL, SR_CONF_LIMIT_FRAMES, gvar) != SR_OK) {
 678                         g_critical("Failed to configure frame limit.");
 679                         sr_session_destroy(session);
 680                         return;
 681                 }
 682         }
 683
 684         if (opt_transform_module) {
 685                 if (!(t = setup_transform_module(sdi)))
 686                         g_critical("Failed to initialize transform module.");
 687         }
 688
 689         main_loop = g_main_loop_new(NULL, FALSE);
 690
 691         sr_session_stopped_callback_set(session,
 692                 (sr_session_stopped_callback)g_main_loop_quit, main_loop);
 693
 694         if (sr_session_start(session) != SR_OK) {
 695                 g_critical("Failed to start session.");
 696                 g_main_loop_unref(main_loop);
 697                 sr_session_destroy(session);
 698                 return;
 699         }
 700
 701         if (opt_continuous)
 702                 add_anykey(session);
 703
 704         g_main_loop_run(main_loop);
 705
 706         if (opt_continuous)
 707                 clear_anykey();
 708
 709         if (trigger)
 710                 sr_trigger_free(trigger);
 711
 712         sr_session_datafeed_callback_remove_all(session);
 713         g_main_loop_unref(main_loop);
 714         sr_session_destroy(session);
 715 }