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                         if (!*outfile) {
 113                                 g_critical("Cannot write to output file '%s'.",
 114                                         opt_output_file);
 115                         }
 116                 } else {
 117                         *outfile = NULL;
 118                 }
 119         } else {
 120                 *outfile = stdout;
 121         }
 122
 123         if (fmtopts)
 124                 g_hash_table_destroy(fmtopts);
 125         g_hash_table_destroy(fmtargs);
 126
 127         return o;
 128 }
 129
 130 const struct sr_transform *setup_transform_module(const struct sr_dev_inst *sdi)
 131 {
 132         const struct sr_transform_module *tmod;
 133         const struct sr_option **options;
 134         const struct sr_transform *t;
 135         GHashTable *fmtargs, *fmtopts;
 136         char *fmtspec;
 137
 138         fmtargs = parse_generic_arg(opt_transform_module, TRUE);
 139         fmtspec = g_hash_table_lookup(fmtargs, "sigrok_key");
 140         if (!fmtspec)
 141                 g_critical("Invalid transform module.");
 142         if (!(tmod = sr_transform_find(fmtspec)))
 143                 g_critical("Unknown transform module '%s'.", fmtspec);
 144         g_hash_table_remove(fmtargs, "sigrok_key");
 145         if ((options = sr_transform_options_get(tmod))) {
 146                 fmtopts = generic_arg_to_opt(options, fmtargs);
 147                 sr_transform_options_free(options);
 148         } else
 149                 fmtopts = NULL;
 150         t = sr_transform_new(tmod, fmtopts, sdi);
 151         if (fmtopts)
 152                 g_hash_table_destroy(fmtopts);
 153         g_hash_table_destroy(fmtargs);
 154
 155         return t;
 156 }
 157
 158 /* Get the input stream's list of channels and their types, once. */
 159 static void props_get_channels(struct df_arg_desc *args,
 160         const struct sr_dev_inst *sdi)
 161 {
 162         struct input_stream_props *props;
 163         GSList *l;
 164         const struct sr_channel *ch;
 165
 166         if (!args)
 167                 return;
 168         props = &args->props;
 169         if (props->channels)
 170                 return;
 171
 172         props->channels = g_slist_copy(sr_dev_inst_channels_get(sdi));
 173         if (!props->channels)
 174                 return;
 175         for (l = props->channels; l; l = l->next) {
 176                 ch = l->data;
 177                 if (!ch->enabled)
 178                         continue;
 179                 if (ch->type != SR_CHANNEL_ANALOG)
 180                         continue;
 181                 props->first_analog_channel = ch;
 182                 break;
 183         }
 184 }
 185
 186 static gboolean props_chk_1st_channel(struct df_arg_desc *args,
 187         const struct sr_datafeed_analog *analog)
 188 {
 189         struct sr_channel *ch;
 190
 191         if (!args || !analog || !analog->meaning)
 192                 return FALSE;
 193         ch = g_slist_nth_data(analog->meaning->channels, 0);
 194         if (!ch)
 195                 return FALSE;
 196         return ch == args->props.first_analog_channel;
 197 }
 198
 199 static void props_dump_details(struct df_arg_desc *args)
 200 {
 201         struct input_stream_props *props;
 202         size_t ch_count;
 203         GSList *l;
 204         const struct sr_channel *ch;
 205         const char *type;
 206
 207         if (!args)
 208                 return;
 209         props = &args->props;
 210         if (props->samplerate)
 211                 printf("Samplerate: %" PRIu64 "\n", props->samplerate);
 212         if (props->channels) {
 213                 ch_count = g_slist_length(props->channels);
 214                 printf("Channels: %zu\n", ch_count);
 215                 for (l = props->channels; l; l = l->next) {
 216                         ch = l->data;
 217                         if (ch->type == SR_CHANNEL_ANALOG)
 218                                 type = "analog";
 219                         else
 220                                 type = "logic";
 221                         printf("- %s: %s\n", ch->name, type);
 222                 }
 223         }
 224         if (props->unitsize)
 225                 printf("Logic unitsize: %zu\n", props->unitsize);
 226         if (props->sample_count_logic)
 227                 printf("Logic sample count: %" PRIu64 "\n", props->sample_count_logic);
 228         if (props->sample_count_analog)
 229                 printf("Analog sample count: %" PRIu64 "\n", props->sample_count_analog);
 230         if (props->frame_count)
 231                 printf("Frame count: %" PRIu64 "\n", props->frame_count);
 232         if (props->triggered)
 233                 printf("Trigger count: %" PRIu64 "\n", props->triggered);
 234 }
 235
 236 static void props_cleanup(struct df_arg_desc *args)
 237 {
 238         struct input_stream_props *props;
 239
 240         if (!args)
 241                 return;
 242         props = &args->props;
 243         g_slist_free(props->channels);
 244         props->channels = NULL;
 245         props->first_analog_channel = NULL;
 246 }
 247
 248 void datafeed_in(const struct sr_dev_inst *sdi,
 249                 const struct sr_datafeed_packet *packet, void *cb_data)
 250 {
 251         static const struct sr_output *o = NULL;
 252         static const struct sr_output *oa = NULL;
 253         static uint64_t rcvd_samples_logic = 0;
 254         static uint64_t rcvd_samples_analog = 0;
 255         static uint64_t samplerate = 0;
 256         static int triggered = 0;
 257         static FILE *outfile = NULL;
 258
 259         const struct sr_datafeed_meta *meta;
 260         const struct sr_datafeed_logic *logic;
 261         const struct sr_datafeed_analog *analog;
 262         struct df_arg_desc *df_arg;
 263         int do_props;
 264         struct input_stream_props *props;
 265         struct sr_session *session;
 266         struct sr_config *src;
 267         GSList *l;
 268         GString *out;
 269         GVariant *gvar;
 270         uint64_t end_sample;
 271         uint64_t input_len;
 272         struct sr_dev_driver *driver;
 273
 274         /* Avoid warnings when building without decoder support. */
 275         (void)session;
 276         (void)input_len;
 277
 278         driver = sr_dev_inst_driver_get(sdi);
 279
 280         /* Skip all packets before the first header. */
 281         if (packet->type != SR_DF_HEADER && !o)
 282                 return;
 283
 284         /* Prepare to either process data, or "just" gather properties. */
 285         df_arg = cb_data;
 286         session = df_arg->session;
 287         do_props = df_arg->do_props;
 288         props = &df_arg->props;
 289
 290         switch (packet->type) {
 291         case SR_DF_HEADER:
 292                 g_debug("cli: Received SR_DF_HEADER.");
 293                 if (maybe_config_get(driver, sdi, NULL, SR_CONF_SAMPLERATE,
 294                                 &gvar) == SR_OK) {
 295                         samplerate = g_variant_get_uint64(gvar);
 296                         g_variant_unref(gvar);
 297                 }
 298                 if (do_props) {
 299                         /* Setup variables for maximum code path re-use. */
 300                         o = (void *)-1;
 301                         limit_samples = 0;
 302                         /* Start collecting input stream properties. */
 303                         memset(props, 0, sizeof(*props));
 304                         props->samplerate = samplerate;
 305                         props_get_channels(df_arg, sdi);
 306                         break;
 307                 }
 308                 if (!(o = setup_output_format(sdi, &outfile)))
 309                         g_critical("Failed to initialize output module.");
 310
 311                 /* Set up backup analog output module. */
 312                 if (outfile)
 313                         oa = sr_output_new(sr_output_find("analog"), NULL,
 314                                         sdi, NULL);
 315
 316                 rcvd_samples_logic = rcvd_samples_analog = 0;
 317
 318 #ifdef HAVE_SRD
 319                 if (opt_pds) {
 320                         if (samplerate) {
 321                                 if (srd_session_metadata_set(srd_sess, SRD_CONF_SAMPLERATE,
 322                                                 g_variant_new_uint64(samplerate)) != SRD_OK) {
 323                                         g_critical("Failed to configure decode session.");
 324                                         break;
 325                                 }
 326                         }
 327                         if (srd_session_start(srd_sess) != SRD_OK) {
 328                                 g_critical("Failed to start decode session.");
 329                                 break;
 330                         }
 331                 }
 332 #endif
 333                 break;
 334
 335         case SR_DF_META:
 336                 g_debug("cli: Received SR_DF_META.");
 337                 meta = packet->payload;
 338                 for (l = meta->config; l; l = l->next) {
 339                         src = l->data;
 340                         switch (src->key) {
 341                         case SR_CONF_SAMPLERATE:
 342                                 samplerate = g_variant_get_uint64(src->data);
 343                                 g_debug("cli: Got samplerate %"PRIu64" Hz.", samplerate);
 344                                 if (do_props) {
 345                                         props->samplerate = samplerate;
 346                                         break;
 347                                 }
 348 #ifdef HAVE_SRD
 349                                 if (opt_pds) {
 350                                         if (srd_session_metadata_set(srd_sess, SRD_CONF_SAMPLERATE,
 351                                                         g_variant_new_uint64(samplerate)) != SRD_OK) {
 352                                                 g_critical("Failed to pass samplerate to decoder.");
 353                                         }
 354                                 }
 355 #endif
 356                                 break;
 357                         case SR_CONF_SAMPLE_INTERVAL:
 358                                 samplerate = g_variant_get_uint64(src->data);
 359                                 g_debug("cli: Got sample interval %"PRIu64" ms.", samplerate);
 360                                 if (do_props) {
 361                                         props->samplerate = samplerate;
 362                                         break;
 363                                 }
 364                                 break;
 365                         default:
 366                                 /* Unknown metadata is not an error. */
 367                                 break;
 368                         }
 369                 }
 370                 break;
 371
 372         case SR_DF_TRIGGER:
 373                 g_debug("cli: Received SR_DF_TRIGGER.");
 374                 if (do_props) {
 375                         props->triggered++;
 376                         break;
 377                 }
 378                 triggered = 1;
 379                 break;
 380
 381         case SR_DF_LOGIC:
 382                 logic = packet->payload;
 383                 g_message("cli: Received SR_DF_LOGIC (%"PRIu64" bytes, unitsize = %d).",
 384                                 logic->length, logic->unitsize);
 385                 if (logic->length == 0)
 386                         break;
 387
 388                 if (do_props) {
 389                         props_get_channels(df_arg, sdi);
 390                         props->unitsize = logic->unitsize;
 391                         props->sample_count_logic += logic->length / logic->unitsize;
 392                         break;
 393                 }
 394
 395                 /* Don't store any samples until triggered. */
 396                 if (opt_wait_trigger && !triggered)
 397                         break;
 398
 399                 if (limit_samples && rcvd_samples_logic >= limit_samples)
 400                         break;
 401
 402                 end_sample = rcvd_samples_logic + logic->length / logic->unitsize;
 403                 /* Cut off last packet according to the sample limit. */
 404                 if (limit_samples && end_sample > limit_samples)
 405                         end_sample = limit_samples;
 406                 input_len = (end_sample - rcvd_samples_logic) * logic->unitsize;
 407
 408                 if (opt_pds) {
 409 #ifdef HAVE_SRD
 410                         if (srd_session_send(srd_sess, rcvd_samples_logic, end_sample,
 411                                         logic->data, input_len, logic->unitsize) != SRD_OK)
 412                                 sr_session_stop(session);
 413 #endif
 414                 }
 415
 416                 rcvd_samples_logic = end_sample;
 417                 break;
 418
 419         case SR_DF_ANALOG:
 420                 analog = packet->payload;
 421                 g_message("cli: Received SR_DF_ANALOG (%d samples).", analog->num_samples);
 422                 if (analog->num_samples == 0)
 423                         break;
 424
 425                 if (do_props) {
 426                         /* Only count the first analog channel. */
 427                         props_get_channels(df_arg, sdi);
 428                         if (!props_chk_1st_channel(df_arg, analog))
 429                                 break;
 430                         props->sample_count_analog += analog->num_samples;
 431                         break;
 432                 }
 433
 434                 if (limit_samples && rcvd_samples_analog >= limit_samples)
 435                         break;
 436
 437                 rcvd_samples_analog += analog->num_samples;
 438                 break;
 439
 440         case SR_DF_FRAME_BEGIN:
 441                 g_debug("cli: Received SR_DF_FRAME_BEGIN.");
 442                 break;
 443
 444         case SR_DF_FRAME_END:
 445                 g_debug("cli: Received SR_DF_FRAME_END.");
 446                 if (do_props) {
 447                         props->frame_count++;
 448                         break;
 449                 }
 450                 break;
 451
 452         default:
 453                 break;
 454         }
 455
 456         if (!do_props && o && !opt_pds) {
 457                 if (sr_output_send(o, packet, &out) == SR_OK) {
 458                         if (oa && !out) {
 459                                 /*
 460                                  * The user didn't specify an output module,
 461                                  * but needs to see this analog data.
 462                                  */
 463                                 sr_output_send(oa, packet, &out);
 464                         }
 465                         if (outfile && out && out->len > 0) {
 466                                 fwrite(out->str, 1, out->len, outfile);
 467                                 fflush(outfile);
 468                         }
 469                         if (out)
 470                                 g_string_free(out, TRUE);
 471                 }
 472         }
 473
 474         /*
 475          * SR_DF_END needs to be handled after the output module's receive()
 476          * is called, so it can properly clean up that module.
 477          */
 478         if (packet->type == SR_DF_END) {
 479                 g_debug("cli: Received SR_DF_END.");
 480
 481                 if (do_props) {
 482                         props_dump_details(df_arg);
 483                         props_cleanup(df_arg);
 484                         o = NULL;
 485                 }
 486
 487                 if (o)
 488                         sr_output_free(o);
 489                 o = NULL;
 490
 491                 if (oa)
 492                         sr_output_free(oa);
 493                 oa = NULL;
 494
 495                 if (outfile && outfile != stdout)
 496                         fclose(outfile);
 497
 498                 if (limit_samples) {
 499                         if (rcvd_samples_logic > 0 && rcvd_samples_logic < limit_samples)
 500                                 g_warning("Device only sent %" PRIu64 " samples.",
 501                                            rcvd_samples_logic);
 502                         else if (rcvd_samples_analog > 0 && rcvd_samples_analog < limit_samples)
 503                                 g_warning("Device only sent %" PRIu64 " samples.",
 504                                            rcvd_samples_analog);
 505                 }
 506         }
 507
 508 }
 509
 510 int opt_to_gvar(char *key, char *value, struct sr_config *src)
 511 {
 512         const struct sr_key_info *srci, *srmqi;
 513         double tmp_double, dlow, dhigh;
 514         uint64_t tmp_u64, p, q, low, high, mqflags;
 515         uint32_t mq;
 516         GVariant *rational[2], *range[2], *gtup[2];
 517         GVariantBuilder *vbl;
 518         gboolean tmp_bool;
 519         gchar **keyval;
 520         int ret, i;
 521
 522         if (!(srci = sr_key_info_name_get(SR_KEY_CONFIG, key))) {
 523                 g_critical("Unknown device option '%s'.", (char *) key);
 524                 return -1;
 525         }
 526         src->key = srci->key;
 527
 528         if ((!value || strlen(value) == 0) &&
 529                 (srci->datatype != SR_T_BOOL)) {
 530                 g_critical("Option '%s' needs a value.", (char *)key);
 531                 return -1;
 532         }
 533
 534         ret = 0;
 535         switch (srci->datatype) {
 536         case SR_T_UINT64:
 537                 ret = sr_parse_sizestring(value, &tmp_u64);
 538                 if (ret != 0)
 539                         break;
 540                 src->data = g_variant_new_uint64(tmp_u64);
 541                 break;
 542         case SR_T_INT32:
 543                 ret = sr_parse_sizestring(value, &tmp_u64);
 544                 if (ret != 0)
 545                         break;
 546                 src->data = g_variant_new_int32(tmp_u64);
 547                 break;
 548         case SR_T_STRING:
 549                 src->data = g_variant_new_string(value);
 550                 break;
 551         case SR_T_BOOL:
 552                 if (!value)
 553                         tmp_bool = TRUE;
 554                 else
 555                         tmp_bool = sr_parse_boolstring(value);
 556                 src->data = g_variant_new_boolean(tmp_bool);
 557                 break;
 558         case SR_T_FLOAT:
 559                 tmp_double = strtof(value, NULL);
 560                 src->data = g_variant_new_double(tmp_double);
 561                 break;
 562         case SR_T_RATIONAL_PERIOD:
 563                 if ((ret = sr_parse_period(value, &p, &q)) != SR_OK)
 564                         break;
 565                 rational[0] = g_variant_new_uint64(p);
 566                 rational[1] = g_variant_new_uint64(q);
 567                 src->data = g_variant_new_tuple(rational, 2);
 568                 break;
 569         case SR_T_RATIONAL_VOLT:
 570                 if ((ret = sr_parse_voltage(value, &p, &q)) != SR_OK)
 571                         break;
 572                 rational[0] = g_variant_new_uint64(p);
 573                 rational[1] = g_variant_new_uint64(q);
 574                 src->data = g_variant_new_tuple(rational, 2);
 575                 break;
 576         case SR_T_UINT64_RANGE:
 577                 if (sscanf(value, "%"PRIu64"-%"PRIu64, &low, &high) != 2) {
 578                         ret = -1;
 579                         break;
 580                 } else {
 581                         range[0] = g_variant_new_uint64(low);
 582                         range[1] = g_variant_new_uint64(high);
 583                         src->data = g_variant_new_tuple(range, 2);
 584                 }
 585                 break;
 586         case SR_T_DOUBLE_RANGE:
 587                 if (sscanf(value, "%lf-%lf", &dlow, &dhigh) != 2) {
 588                         ret = -1;
 589                         break;
 590                 } else {
 591                         range[0] = g_variant_new_double(dlow);
 592                         range[1] = g_variant_new_double(dhigh);
 593                         src->data = g_variant_new_tuple(range, 2);
 594                 }
 595                 break;
 596         case SR_T_KEYVALUE:
 597                 /* Expects the argument to be in the form of key=value. */
 598                 keyval = g_strsplit(value, "=", 2);
 599                 if (!keyval[0] || !keyval[1]) {
 600                         g_strfreev(keyval);
 601                         ret = -1;
 602                         break;
 603                 } else {
 604                         vbl = g_variant_builder_new(G_VARIANT_TYPE_DICTIONARY);
 605                         g_variant_builder_add(vbl, "{ss}",
 606                                               keyval[0], keyval[1]);
 607                         src->data = g_variant_builder_end(vbl);
 608                         g_strfreev(keyval);
 609                 }
 610                 break;
 611         case SR_T_MQ:
 612                 /*
 613                   Argument is MQ id e.g. ("voltage") optionally followed by one
 614                   or more /<mqflag> e.g. "/ac".
 615                  */
 616                 keyval = g_strsplit(value, "/", 0);
 617                 if (!keyval[0] || !(srmqi = sr_key_info_name_get(SR_KEY_MQ, keyval[0]))) {
 618                         g_strfreev(keyval);
 619                         ret = -1;
 620                         break;
 621                 }
 622                 mq = srmqi->key;
 623                 mqflags = 0;
 624                 for (i = 1; keyval[i]; i++) {
 625                         if (!(srmqi = sr_key_info_name_get(SR_KEY_MQFLAGS, keyval[i]))) {
 626                                 ret = -1;
 627                                 break;
 628                         }
 629                         mqflags |= srmqi->key;
 630                 }
 631                 g_strfreev(keyval);
 632                 if (ret != -1) {
 633                         gtup[0] = g_variant_new_uint32(mq);
 634                         gtup[1] = g_variant_new_uint64(mqflags);
 635                         src->data = g_variant_new_tuple(gtup, 2);
 636                 }
 637                 break;
 638         default:
 639                 g_critical("Unknown data type specified for option '%s' "
 640                            "(driver implementation bug?).", key);
 641                 ret = -1;
 642         }
 643
 644         if (ret < 0)
 645                 g_critical("Invalid value: '%s' for option '%s'", value, key);
 646
 647         return ret;
 648 }
 649
 650 int set_dev_options(struct sr_dev_inst *sdi, GHashTable *args)
 651 {
 652         struct sr_config src;
 653         struct sr_channel_group *cg;
 654         GHashTableIter iter;
 655         gpointer key, value;
 656         int ret;
 657
 658         g_hash_table_iter_init(&iter, args);
 659         while (g_hash_table_iter_next(&iter, &key, &value)) {
 660                 if ((ret = opt_to_gvar(key, value, &src)) != 0)
 661                         return ret;
 662                 cg = select_channel_group(sdi);
 663                 if ((ret = maybe_config_set(sr_dev_inst_driver_get(sdi), sdi, cg,
 664                                 src.key, src.data)) != SR_OK) {
 665                         g_critical("Failed to set device option '%s': %s.",
 666                                    (char *)key, sr_strerror(ret));
 667                         return ret;
 668                 }
 669         }
 670
 671         return SR_OK;
 672 }
 673
 674 void run_session(void)
 675 {
 676         struct df_arg_desc df_arg;
 677         GSList *devices, *real_devices, *sd;
 678         GHashTable *devargs;
 679         GVariant *gvar;
 680         struct sr_session *session;
 681         struct sr_trigger *trigger;
 682         struct sr_dev_inst *sdi;
 683         uint64_t min_samples, max_samples;
 684         GArray *drv_opts;
 685         guint i;
 686         int is_demo_dev;
 687         struct sr_dev_driver *driver;
 688         const struct sr_transform *t;
 689         GMainLoop *main_loop;
 690
 691         memset(&df_arg, 0, sizeof(df_arg));
 692         df_arg.do_props = FALSE;
 693
 694         devices = device_scan();
 695         if (!devices) {
 696                 g_critical("No devices found.");
 697                 return;
 698         }
 699
 700         real_devices = NULL;
 701         for (sd = devices; sd; sd = sd->next) {
 702                 sdi = sd->data;
 703
 704                 driver = sr_dev_inst_driver_get(sdi);
 705
 706                 if (!(drv_opts = sr_dev_options(driver, NULL, NULL))) {
 707                         g_critical("Failed to query list of driver options.");
 708                         return;
 709                 }
 710
 711                 is_demo_dev = 0;
 712                 for (i = 0; i < drv_opts->len; i++) {
 713                         if (g_array_index(drv_opts, uint32_t, i) == SR_CONF_DEMO_DEV)
 714                                 is_demo_dev = 1;
 715                 }
 716
 717                 g_array_free(drv_opts, TRUE);
 718
 719                 if (!is_demo_dev)
 720                         real_devices = g_slist_append(real_devices, sdi);
 721         }
 722
 723         if (g_slist_length(devices) > 1) {
 724                 if (g_slist_length(real_devices) != 1) {
 725                         g_critical("sigrok-cli only supports one device for capturing.");
 726                         return;
 727                 } else {
 728                         /* We only have one non-demo device. */
 729                         g_slist_free(devices);
 730                         devices = real_devices;
 731                         real_devices = NULL;
 732                 }
 733         }
 734
 735         /* This is unlikely to happen but it makes static analyzers stop complaining. */
 736         if (!devices) {
 737                 g_critical("No real devices found.");
 738                 return;
 739         }
 740
 741         sdi = devices->data;
 742         g_slist_free(devices);
 743         g_slist_free(real_devices);
 744
 745         sr_session_new(sr_ctx, &session);
 746         df_arg.session = session;
 747         sr_session_datafeed_callback_add(session, datafeed_in, &df_arg);
 748         df_arg.session = NULL;
 749
 750         if (sr_dev_open(sdi) != SR_OK) {
 751                 g_critical("Failed to open device.");
 752                 return;
 753         }
 754
 755         if (sr_session_dev_add(session, sdi) != SR_OK) {
 756                 g_critical("Failed to add device to session.");
 757                 sr_session_destroy(session);
 758                 return;
 759         }
 760
 761         if (opt_config) {
 762                 if ((devargs = parse_generic_arg(opt_config, FALSE))) {
 763                         if (set_dev_options(sdi, devargs) != SR_OK)
 764                                 return;
 765                         g_hash_table_destroy(devargs);
 766                 }
 767         }
 768
 769         if (select_channels(sdi) != SR_OK) {
 770                 g_critical("Failed to set channels.");
 771                 sr_session_destroy(session);
 772                 return;
 773         }
 774
 775         trigger = NULL;
 776         if (opt_triggers) {
 777                 if (!parse_triggerstring(sdi, opt_triggers, &trigger)) {
 778                         sr_session_destroy(session);
 779                         return;
 780                 }
 781                 if (sr_session_trigger_set(session, trigger) != SR_OK) {
 782                         sr_session_destroy(session);
 783                         return;
 784                 }
 785         }
 786
 787         if (opt_continuous) {
 788                 if (!sr_dev_has_option(sdi, SR_CONF_CONTINUOUS)) {
 789                         g_critical("This device does not support continuous sampling.");
 790                         sr_session_destroy(session);
 791                         return;
 792                 }
 793         }
 794
 795         if (opt_time) {
 796                 if (set_limit_time(sdi) != SR_OK) {
 797                         sr_session_destroy(session);
 798                         return;
 799                 }
 800         }
 801
 802         if (opt_samples) {
 803                 if ((sr_parse_sizestring(opt_samples, &limit_samples) != SR_OK)) {
 804                         g_critical("Invalid sample limit '%s'.", opt_samples);
 805                         sr_session_destroy(session);
 806                         return;
 807                 }
 808                 if (maybe_config_list(driver, sdi, NULL, SR_CONF_LIMIT_SAMPLES,
 809                                 &gvar) == SR_OK) {
 810                         /*
 811                          * The device has no compression, or compression is turned
 812                          * off, and publishes its sample memory size.
 813                          */
 814                         g_variant_get(gvar, "(tt)", &min_samples, &max_samples);
 815                         g_variant_unref(gvar);
 816                         if (limit_samples < min_samples) {
 817                                 g_critical("The device stores at least %"PRIu64
 818                                                 " samples with the current settings.", min_samples);
 819                         }
 820                         if (limit_samples > max_samples) {
 821                                 g_critical("The device can store only %"PRIu64
 822                                                 " samples with the current settings.", max_samples);
 823                         }
 824                 }
 825                 gvar = g_variant_new_uint64(limit_samples);
 826                 if (maybe_config_set(sr_dev_inst_driver_get(sdi), sdi, NULL, SR_CONF_LIMIT_SAMPLES, gvar) != SR_OK) {
 827                         g_critical("Failed to configure sample limit.");
 828                         sr_session_destroy(session);
 829                         return;
 830                 }
 831         }
 832
 833         if (opt_frames) {
 834                 if ((sr_parse_sizestring(opt_frames, &limit_frames) != SR_OK)) {
 835                         g_critical("Invalid frame limit '%s'.", opt_frames);
 836                         sr_session_destroy(session);
 837                         return;
 838                 }
 839                 gvar = g_variant_new_uint64(limit_frames);
 840                 if (maybe_config_set(sr_dev_inst_driver_get(sdi), sdi, NULL, SR_CONF_LIMIT_FRAMES, gvar) != SR_OK) {
 841                         g_critical("Failed to configure frame limit.");
 842                         sr_session_destroy(session);
 843                         return;
 844                 }
 845         }
 846
 847         if (opt_transform_module) {
 848                 if (!(t = setup_transform_module(sdi)))
 849                         g_critical("Failed to initialize transform module.");
 850         }
 851
 852         main_loop = g_main_loop_new(NULL, FALSE);
 853
 854         sr_session_stopped_callback_set(session,
 855                 (sr_session_stopped_callback)g_main_loop_quit, main_loop);
 856
 857         if (sr_session_start(session) != SR_OK) {
 858                 g_critical("Failed to start session.");
 859                 g_main_loop_unref(main_loop);
 860                 sr_session_destroy(session);
 861                 return;
 862         }
 863
 864         if (opt_continuous)
 865                 add_anykey(session);
 866
 867         g_main_loop_run(main_loop);
 868
 869         if (opt_continuous)
 870                 clear_anykey();
 871
 872         if (trigger)
 873                 sr_trigger_free(trigger);
 874
 875         sr_session_datafeed_callback_remove_all(session);
 876         g_main_loop_unref(main_loop);
 877         sr_session_destroy(session);
 878 }