show.c

   1 /*
   2  * This file is part of the sigrok-cli project.
   3  *
   4  * Copyright (C) 2013 Bert Vermeulen <bert@biot.com>
   5  *
   6  * This program is free software: you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation, either version 3 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include "sigrok-cli.h"
  21 #include <glib.h>
  22 #include <string.h>
  23
  24 static gint sort_inputs(gconstpointer a, gconstpointer b)
  25 {
  26         return strcmp(sr_input_id_get((struct sr_input_module *)a),
  27                         sr_input_id_get((struct sr_input_module *)b));
  28 }
  29
  30 static gint sort_outputs(gconstpointer a, gconstpointer b)
  31 {
  32         return strcmp(sr_output_id_get((struct sr_output_module *)a),
  33                         sr_output_id_get((struct sr_output_module *)b));
  34 }
  35
  36 static gint sort_drivers(gconstpointer a, gconstpointer b)
  37 {
  38         const struct sr_dev_driver *sdda = a, *sddb = b;
  39
  40         return strcmp(sdda->name, sddb->name);
  41 }
  42
  43 #ifdef HAVE_SRD
  44 static gint sort_pds(gconstpointer a, gconstpointer b)
  45 {
  46         const struct srd_decoder *sda = a, *sdb = b;
  47
  48         return strcmp(sda->id, sdb->id);
  49 }
  50 #endif
  51
  52 void show_version(void)
  53 {
  54         struct sr_dev_driver **drivers, *driver;
  55         const struct sr_input_module **inputs, *input;
  56         const struct sr_output_module **outputs, *output;
  57         const GSList *l;
  58         GSList *sl;
  59         int i;
  60 #ifdef HAVE_SRD
  61         struct srd_decoder *dec;
  62 #endif
  63
  64         printf("sigrok-cli %s\n\n", VERSION);
  65
  66         printf("Using libsigrok %s (lib version %s).\n",
  67                sr_package_version_string_get(), sr_lib_version_string_get());
  68 #ifdef HAVE_SRD
  69         printf("Using libsigrokdecode %s (lib version %s).\n\n",
  70                srd_package_version_string_get(), srd_lib_version_string_get());
  71 #endif
  72
  73         printf("Supported hardware drivers:\n");
  74         drivers = sr_driver_list();
  75         for (sl = NULL, i = 0; drivers[i]; i++)
  76                 sl = g_slist_append(sl, drivers[i]);
  77         sl = g_slist_sort(sl, sort_drivers);
  78         for (l = sl; l; l = l->next) {
  79                 driver = l->data;
  80                 printf("  %-20s %s\n", driver->name, driver->longname);
  81         }
  82         printf("\n");
  83         g_slist_free(sl);
  84
  85         printf("Supported input formats:\n");
  86         inputs = sr_input_list();
  87         for (sl = NULL, i = 0; inputs[i]; i++)
  88                 sl = g_slist_append(sl, (gpointer)inputs[i]);
  89         sl = g_slist_sort(sl, sort_inputs);
  90         for (l = sl; l; l = l->next) {
  91                 input = l->data;
  92                 printf("  %-20s %s\n", sr_input_id_get(input),
  93                                 sr_input_description_get(input));
  94         }
  95         printf("\n");
  96         g_slist_free(sl);
  97
  98         printf("Supported output formats:\n");
  99         outputs = sr_output_list();
 100         for (sl = NULL, i = 0; outputs[i]; i++)
 101                 sl = g_slist_append(sl, (gpointer)outputs[i]);
 102         sl = g_slist_sort(sl, sort_outputs);
 103         for (l = sl; l; l = l->next) {
 104                 output = l->data;
 105                 printf("  %-20s %s\n", sr_output_id_get(output),
 106                                 sr_output_description_get(output));
 107         }
 108         printf("\n");
 109         g_slist_free(sl);
 110
 111 #ifdef HAVE_SRD
 112         if (srd_init(NULL) == SRD_OK) {
 113                 printf("Supported protocol decoders:\n");
 114                 srd_decoder_load_all();
 115                 sl = g_slist_copy((GSList *)srd_decoder_list());
 116                 sl = g_slist_sort(sl, sort_pds);
 117                 for (l = sl; l; l = l->next) {
 118                         dec = l->data;
 119                         printf("  %-20s %s\n", dec->id, dec->longname);
 120                         /* Print protocol description upon "-l 3" or higher. */
 121                         if (opt_loglevel >= SR_LOG_INFO)
 122                                 printf("  %-20s %s\n", "", dec->desc);
 123                 }
 124                 g_slist_free(sl);
 125                 srd_exit();
 126         }
 127         printf("\n");
 128 #endif
 129 }
 130
 131 static gint sort_channels(gconstpointer a, gconstpointer b)
 132 {
 133         const struct sr_channel *pa = a, *pb = b;
 134
 135         return pa->index - pb->index;
 136 }
 137
 138 static void print_dev_line(const struct sr_dev_inst *sdi)
 139 {
 140         struct sr_channel *ch;
 141         GSList *sl, *l;
 142         GString *s;
 143         GVariant *gvar;
 144
 145         s = g_string_sized_new(128);
 146         g_string_assign(s, sdi->driver->name);
 147         if (sr_config_get(sdi->driver, sdi, NULL, SR_CONF_CONN, &gvar) == SR_OK) {
 148                 g_string_append(s, ":conn=");
 149                 g_string_append(s, g_variant_get_string(gvar, NULL));
 150                 g_variant_unref(gvar);
 151         }
 152         g_string_append(s, " - ");
 153         if (sdi->vendor && sdi->vendor[0])
 154                 g_string_append_printf(s, "%s ", sdi->vendor);
 155         if (sdi->model && sdi->model[0])
 156                 g_string_append_printf(s, "%s ", sdi->model);
 157         if (sdi->version && sdi->version[0])
 158                 g_string_append_printf(s, "%s ", sdi->version);
 159         if (sdi->channels) {
 160                 if (g_slist_length(sdi->channels) == 1) {
 161                         ch = sdi->channels->data;
 162                         g_string_append_printf(s, "with 1 channel: %s", ch->name);
 163                 } else {
 164                         sl = g_slist_sort(g_slist_copy(sdi->channels), sort_channels);
 165                         g_string_append_printf(s, "with %d channels:", g_slist_length(sl));
 166                         for (l = sl; l; l = l->next) {
 167                                 ch = l->data;
 168                                 g_string_append_printf(s, " %s", ch->name);
 169                         }
 170                         g_slist_free(sl);
 171                 }
 172         }
 173         g_string_append_printf(s, "\n");
 174         printf("%s", s->str);
 175         g_string_free(s, TRUE);
 176
 177 }
 178
 179 void show_dev_list(void)
 180 {
 181         struct sr_dev_inst *sdi;
 182         GSList *devices, *l;
 183
 184         if (!(devices = device_scan()))
 185                 return;
 186
 187         printf("The following devices were found:\n");
 188         for (l = devices; l; l = l->next) {
 189                 sdi = l->data;
 190                 print_dev_line(sdi);
 191         }
 192         g_slist_free(devices);
 193
 194 }
 195
 196 void show_dev_detail(void)
 197 {
 198         struct sr_dev_inst *sdi;
 199         const struct sr_config_info *srci;
 200         struct sr_channel *ch;
 201         struct sr_channel_group *channel_group, *cg;
 202         GSList *devices, *cgl, *chl;
 203         GVariant *gvar_opts, *gvar_dict, *gvar_list, *gvar;
 204         gsize num_opts, num_elements;
 205         double dlow, dhigh, dcur_low, dcur_high;
 206         const uint64_t *uint64, p, q, low, high;
 207         uint64_t cur_low, cur_high;
 208         const uint32_t *opts;
 209         const int32_t *int32;
 210         uint32_t key, o;
 211         unsigned int num_devices, i;
 212         char *tmp_str, *s, c;
 213         const char **stropts;
 214
 215         if (!(devices = device_scan())) {
 216                 g_critical("No devices found.");
 217                 return;
 218         }
 219
 220         num_devices = g_slist_length(devices);
 221         if (num_devices > 1) {
 222                 g_critical("%d devices found. Use --scan to show them, "
 223                                 "and select one to show.", num_devices);
 224                 return;
 225         }
 226
 227         sdi = devices->data;
 228         g_slist_free(devices);
 229         print_dev_line(sdi);
 230
 231         if (sr_dev_open(sdi) != SR_OK) {
 232                 g_critical("Failed to open device.");
 233                 return;
 234         }
 235
 236         if ((sr_config_list(sdi->driver, NULL, NULL, SR_CONF_SCAN_OPTIONS,
 237                         &gvar_opts) == SR_OK)) {
 238                 opts = g_variant_get_fixed_array(gvar_opts, &num_elements,
 239                                 sizeof(int32_t));
 240                 printf("Supported driver options:\n");
 241                 for (i = 0; i < num_elements; i++) {
 242                         if (!(srci = sr_config_info_get(opts[i])))
 243                                 continue;
 244                         printf("    %s\n", srci->id);
 245                 }
 246                 g_variant_unref(gvar_opts);
 247         }
 248
 249         /* Selected channels and channel group may affect which options are
 250          * returned, or which values for them. */
 251         select_channels(sdi);
 252         channel_group = select_channel_group(sdi);
 253
 254         if ((sr_config_list(sdi->driver, sdi, channel_group, SR_CONF_DEVICE_OPTIONS,
 255                         &gvar_opts)) != SR_OK)
 256                 /* Driver supports no device instance options. */
 257                 return;
 258
 259         if (sdi->channel_groups) {
 260                 printf("Channel groups:\n");
 261                 for (cgl = sdi->channel_groups; cgl; cgl = cgl->next) {
 262                         cg = cgl->data;
 263                         printf("    %s: channel%s", cg->name,
 264                                         g_slist_length(cg->channels) > 1 ? "s" : "");
 265                         for (chl = cg->channels; chl; chl = chl->next) {
 266                                 ch = chl->data;
 267                                 printf(" %s", ch->name);
 268                         }
 269                         printf("\n");
 270                 }
 271         }
 272
 273         printf("Supported configuration options");
 274         if (sdi->channel_groups) {
 275                 if (!channel_group)
 276                         printf(" across all channel groups");
 277                 else
 278                         printf(" on channel group %s", channel_group->name);
 279         }
 280         printf(":\n");
 281         opts = g_variant_get_fixed_array(gvar_opts, &num_opts, sizeof(uint32_t));
 282         for (o = 0; o < num_opts; o++) {
 283                 key = opts[o] & SR_CONF_MASK;
 284                 if (!(srci = sr_config_info_get(key)))
 285                         continue;
 286
 287                 if (key == SR_CONF_TRIGGER_MATCH) {
 288                         if (sr_config_list(sdi->driver, sdi, channel_group, key,
 289                                         &gvar_list) != SR_OK) {
 290                                 printf("\n");
 291                                 continue;
 292                         }
 293                         int32 = g_variant_get_fixed_array(gvar_list,
 294                                         &num_elements, sizeof(int32_t));
 295                         printf("    Supported triggers: ");
 296                         for (i = 0; i < num_elements; i++) {
 297                                 switch(int32[i]) {
 298                                 case SR_TRIGGER_ZERO:
 299                                         c = '0';
 300                                         break;
 301                                 case SR_TRIGGER_ONE:
 302                                         c = '1';
 303                                         break;
 304                                 case SR_TRIGGER_RISING:
 305                                         c = 'r';
 306                                         break;
 307                                 case SR_TRIGGER_FALLING:
 308                                         c = 'f';
 309                                         break;
 310                                 case SR_TRIGGER_EDGE:
 311                                         c = 'e';
 312                                         break;
 313                                 case SR_TRIGGER_OVER:
 314                                         c = 'o';
 315                                         break;
 316                                 case SR_TRIGGER_UNDER:
 317                                         c = 'u';
 318                                         break;
 319                                 default:
 320                                         c = 0;
 321                                         break;
 322                                 }
 323                                 if (c)
 324                                         printf("%c ", c);
 325                         }
 326                         printf("\n");
 327                         g_variant_unref(gvar_list);
 328
 329                 } else if (key == SR_CONF_LIMIT_SAMPLES) {
 330                         /* If implemented in config_list(), this denotes the
 331                          * maximum number of samples a device can send. This
 332                          * really applies only to logic analyzers, and then
 333                          * only to those that don't support compression, or
 334                          * have it turned off by default. The values returned
 335                          * are the low/high limits. */
 336                         if (sr_config_list(sdi->driver, sdi, channel_group, key,
 337                                         &gvar) != SR_OK) {
 338                                 continue;
 339                         }
 340                         g_variant_get(gvar, "(tt)", &low, &high);
 341                         g_variant_unref(gvar);
 342                         printf("    Maximum number of samples: %"PRIu64"\n", high);
 343
 344                 } else if (key == SR_CONF_SAMPLERATE) {
 345                         /* Supported samplerates */
 346                         printf("    %s", srci->id);
 347                         if (sr_config_list(sdi->driver, sdi, channel_group, SR_CONF_SAMPLERATE,
 348                                         &gvar_dict) != SR_OK) {
 349                                 printf("\n");
 350                                 continue;
 351                         }
 352                         if ((gvar_list = g_variant_lookup_value(gvar_dict,
 353                                         "samplerates", G_VARIANT_TYPE("at")))) {
 354                                 uint64 = g_variant_get_fixed_array(gvar_list,
 355                                                 &num_elements, sizeof(uint64_t));
 356                                 printf(" - supported samplerates:\n");
 357                                 for (i = 0; i < num_elements; i++) {
 358                                         if (!(s = sr_samplerate_string(uint64[i])))
 359                                                 continue;
 360                                         printf("      %s\n", s);
 361                                         g_free(s);
 362                                 }
 363                                 g_variant_unref(gvar_list);
 364                         } else if ((gvar_list = g_variant_lookup_value(gvar_dict,
 365                                         "samplerate-steps", G_VARIANT_TYPE("at")))) {
 366                                 uint64 = g_variant_get_fixed_array(gvar_list,
 367                                                 &num_elements, sizeof(uint64_t));
 368                                 /* low */
 369                                 if (!(s = sr_samplerate_string(uint64[0])))
 370                                         continue;
 371                                 printf(" (%s", s);
 372                                 g_free(s);
 373                                 /* high */
 374                                 if (!(s = sr_samplerate_string(uint64[1])))
 375                                         continue;
 376                                 printf(" - %s", s);
 377                                 g_free(s);
 378                                 /* step */
 379                                 if (!(s = sr_samplerate_string(uint64[2])))
 380                                         continue;
 381                                 printf(" in steps of %s)\n", s);
 382                                 g_free(s);
 383                                 g_variant_unref(gvar_list);
 384                         }
 385                         g_variant_unref(gvar_dict);
 386
 387                 } else if (key == SR_CONF_BUFFERSIZE) {
 388                         /* Supported buffer sizes */
 389                         printf("    %s", srci->id);
 390                         if (sr_config_list(sdi->driver, sdi, channel_group,
 391                                         SR_CONF_BUFFERSIZE, &gvar_list) != SR_OK) {
 392                                 printf("\n");
 393                                 continue;
 394                         }
 395                         uint64 = g_variant_get_fixed_array(gvar_list,
 396                                         &num_elements, sizeof(uint64_t));
 397                         printf(" - supported buffer sizes:\n");
 398                         for (i = 0; i < num_elements; i++)
 399                                 printf("      %"PRIu64"\n", uint64[i]);
 400                         g_variant_unref(gvar_list);
 401
 402                 } else if (key == SR_CONF_TIMEBASE) {
 403                         /* Supported time bases */
 404                         printf("    %s", srci->id);
 405                         if (sr_config_list(sdi->driver, sdi, channel_group,
 406                                         SR_CONF_TIMEBASE, &gvar_list) != SR_OK) {
 407                                 printf("\n");
 408                                 continue;
 409                         }
 410                         printf(" - supported time bases:\n");
 411                         num_elements = g_variant_n_children(gvar_list);
 412                         for (i = 0; i < num_elements; i++) {
 413                                 gvar = g_variant_get_child_value(gvar_list, i);
 414                                 g_variant_get(gvar, "(tt)", &p, &q);
 415                                 s = sr_period_string(p * q);
 416                                 printf("      %s\n", s);
 417                                 g_free(s);
 418                         }
 419                         g_variant_unref(gvar_list);
 420
 421                 } else if (key == SR_CONF_VDIV) {
 422                         /* Supported volts/div values */
 423                         printf("    %s", srci->id);
 424                         if (sr_config_list(sdi->driver, sdi, channel_group,
 425                                         SR_CONF_VDIV, &gvar_list) != SR_OK) {
 426                                 printf("\n");
 427                                 continue;
 428                         }
 429                         printf(" - supported volts/div:\n");
 430                         num_elements = g_variant_n_children(gvar_list);
 431                         for (i = 0; i < num_elements; i++) {
 432                                 gvar = g_variant_get_child_value(gvar_list, i);
 433                                 g_variant_get(gvar, "(tt)", &p, &q);
 434                                 s = sr_voltage_string(p, q);
 435                                 printf("      %s\n", s);
 436                                 g_free(s);
 437                         }
 438                         g_variant_unref(gvar_list);
 439
 440                 } else if (srci->datatype == SR_T_STRING) {
 441                         printf("    %s: ", srci->id);
 442                         if (sr_config_get(sdi->driver, sdi, channel_group, key,
 443                                         &gvar) == SR_OK) {
 444                                 tmp_str = g_strdup(g_variant_get_string(gvar, NULL));
 445                                 g_variant_unref(gvar);
 446                         } else
 447                                 tmp_str = NULL;
 448
 449                         if (sr_config_list(sdi->driver, sdi, channel_group, key,
 450                                         &gvar) != SR_OK) {
 451                                 if (tmp_str) {
 452                                         /* Can't list it, but we have a value to show. */
 453                                         printf("%s (current)", tmp_str);
 454                                 }
 455                                 printf("\n");
 456                                 continue;
 457                         }
 458
 459                         stropts = g_variant_get_strv(gvar, &num_elements);
 460                         for (i = 0; i < num_elements; i++) {
 461                                 if (i)
 462                                         printf(", ");
 463                                 printf("%s", stropts[i]);
 464                                 if (tmp_str && !strcmp(tmp_str, stropts[i]))
 465                                         printf(" (current)");
 466                         }
 467                         printf("\n");
 468                         g_free(stropts);
 469                         g_free(tmp_str);
 470                         g_variant_unref(gvar);
 471
 472                 } else if (srci->datatype == SR_T_UINT64_RANGE) {
 473                         printf("    %s: ", srci->id);
 474                         if (sr_config_list(sdi->driver, sdi, channel_group, key,
 475                                         &gvar_list) != SR_OK) {
 476                                 printf("\n");
 477                                 continue;
 478                         }
 479
 480                         if (sr_config_get(sdi->driver, sdi, channel_group, key, &gvar) == SR_OK) {
 481                                 g_variant_get(gvar, "(tt)", &cur_low, &cur_high);
 482                                 g_variant_unref(gvar);
 483                         } else {
 484                                 cur_low = 0;
 485                                 cur_high = 0;
 486                         }
 487
 488                         num_elements = g_variant_n_children(gvar_list);
 489                         for (i = 0; i < num_elements; i++) {
 490                                 gvar = g_variant_get_child_value(gvar_list, i);
 491                                 g_variant_get(gvar, "(tt)", &low, &high);
 492                                 g_variant_unref(gvar);
 493                                 if (i)
 494                                         printf(", ");
 495                                 printf("%"PRIu64"-%"PRIu64, low, high);
 496                                 if (low == cur_low && high == cur_high)
 497                                         printf(" (current)");
 498                         }
 499                         printf("\n");
 500                         g_variant_unref(gvar_list);
 501
 502                 } else if (srci->datatype == SR_T_BOOL) {
 503                         printf("    %s: ", srci->id);
 504                         if (sr_config_get(sdi->driver, sdi, channel_group, key,
 505                                         &gvar) == SR_OK) {
 506                                 if (g_variant_get_boolean(gvar))
 507                                         printf("on (current), off\n");
 508                                 else
 509                                         printf("on, off (current)\n");
 510                                 g_variant_unref(gvar);
 511                         } else
 512                                 printf("on, off\n");
 513
 514                 } else if (srci->datatype == SR_T_DOUBLE_RANGE) {
 515                         printf("    %s: ", srci->id);
 516                         if (sr_config_list(sdi->driver, sdi, channel_group, key,
 517                                         &gvar_list) != SR_OK) {
 518                                 printf("\n");
 519                                 continue;
 520                         }
 521
 522                         if (sr_config_get(sdi->driver, sdi, channel_group, key, &gvar) == SR_OK) {
 523                                 g_variant_get(gvar, "(dd)", &dcur_low, &dcur_high);
 524                                 g_variant_unref(gvar);
 525                         } else {
 526                                 dcur_low = 0;
 527                                 dcur_high = 0;
 528                         }
 529
 530                         num_elements = g_variant_n_children(gvar_list);
 531                         for (i = 0; i < num_elements; i++) {
 532                                 gvar = g_variant_get_child_value(gvar_list, i);
 533                                 g_variant_get(gvar, "(dd)", &dlow, &dhigh);
 534                                 g_variant_unref(gvar);
 535                                 if (i)
 536                                         printf(", ");
 537                                 printf("%.1f-%.1f", dlow, dhigh);
 538                                 if (dlow == dcur_low && dhigh == dcur_high)
 539                                         printf(" (current)");
 540                         }
 541                         printf("\n");
 542                         g_variant_unref(gvar_list);
 543
 544                 } else if (srci->datatype == SR_T_FLOAT) {
 545                         printf("    %s: ", srci->id);
 546                         if (sr_config_get(sdi->driver, sdi, channel_group, key,
 547                                         &gvar) == SR_OK) {
 548                                 printf("%f\n", g_variant_get_double(gvar));
 549                                 g_variant_unref(gvar);
 550                         } else
 551                                 printf("on, off\n");
 552
 553                 } else {
 554
 555                         /* Everything else */
 556                         printf("    %s\n", srci->id);
 557                 }
 558         }
 559         g_variant_unref(gvar_opts);
 560
 561         sr_dev_close(sdi);
 562
 563 }
 564
 565 #ifdef HAVE_SRD
 566 void show_pd_detail(void)
 567 {
 568         struct srd_decoder *dec;
 569         struct srd_decoder_option *o;
 570         struct srd_channel *pdch;
 571         struct srd_decoder_annotation_row *r;
 572         GSList *l, *ll, *ol;
 573         int idx;
 574         char **pdtokens, **pdtok, *optsep, **ann, *val, *doc;
 575
 576         pdtokens = g_strsplit(opt_pds, ",", -1);
 577         for (pdtok = pdtokens; *pdtok; pdtok++) {
 578                 /* Strip options. */
 579                 if ((optsep = strchr(*pdtok, ':')))
 580                         *optsep = '\0';
 581                 if (!(dec = srd_decoder_get_by_id(*pdtok))) {
 582                         g_critical("Protocol decoder %s not found.", *pdtok);
 583                         return;
 584                 }
 585                 printf("ID: %s\nName: %s\nLong name: %s\nDescription: %s\n",
 586                                 dec->id, dec->name, dec->longname, dec->desc);
 587                 printf("License: %s\n", dec->license);
 588                 printf("Annotation classes:\n");
 589                 if (dec->annotations) {
 590                         for (l = dec->annotations; l; l = l->next) {
 591                                 ann = l->data;
 592                                 printf("- %s: %s\n", ann[0], ann[1]);
 593                         }
 594                 } else {
 595                         printf("None.\n");
 596                 }
 597                 printf("Annotation rows:\n");
 598                 if (dec->annotation_rows) {
 599                         for (l = dec->annotation_rows; l; l = l->next) {
 600                                 r = l->data;
 601                                 printf("- %s (%s): ", r->id, r->desc);
 602                                 for (ll = r->ann_classes; ll; ll = ll->next) {
 603                                         idx = GPOINTER_TO_INT(ll->data);
 604                                         ann = g_slist_nth_data(dec->annotations, idx);
 605                                         printf("%s", ann[0]);
 606                                         if (ll->next)
 607                                                 printf(", ");
 608                                 }
 609                                 printf("\n");
 610                         }
 611                 } else {
 612                         printf("None.\n");
 613                 }
 614                 printf("Required channels:\n");
 615                 if (dec->channels) {
 616                         for (l = dec->channels; l; l = l->next) {
 617                                 pdch = l->data;
 618                                 printf("- %s (%s): %s\n",
 619                                        pdch->id, pdch->name, pdch->desc);
 620                         }
 621                 } else {
 622                         printf("None.\n");
 623                 }
 624                 printf("Optional channels:\n");
 625                 if (dec->opt_channels) {
 626                         for (l = dec->opt_channels; l; l = l->next) {
 627                                 pdch = l->data;
 628                                 printf("- %s (%s): %s\n",
 629                                        pdch->id, pdch->name, pdch->desc);
 630                         }
 631                 } else {
 632                         printf("None.\n");
 633                 }
 634                 printf("Options:\n");
 635                 if (dec->options) {
 636                         for (l = dec->options; l; l = l->next) {
 637                                 o = l->data;
 638                                 printf("- %s: %s (", o->id, o->desc);
 639                                 for (ol = o->values; ol; ol = ol->next) {
 640                                         val = g_variant_print(ol->data, FALSE);
 641                                         printf("%s, ", val);
 642                                         g_free(val);
 643                                 }
 644                                 val = g_variant_print(o->def, FALSE);
 645                                 printf("default %s)\n", val);
 646                                 g_free(val);
 647                         }
 648                 } else {
 649                         printf("None.\n");
 650                 }
 651                 if ((doc = srd_decoder_doc_get(dec))) {
 652                         printf("Documentation:\n%s\n",
 653                                doc[0] == '\n' ? doc + 1 : doc);
 654                         g_free(doc);
 655                 }
 656         }
 657
 658         g_strfreev(pdtokens);
 659 }
 660 #endif
 661
 662 void show_input(void)
 663 {
 664         const struct sr_input_module *imod;
 665         const struct sr_option **opts;
 666         GSList *l;
 667         int i;
 668         char *s, **tok;
 669
 670         tok = g_strsplit(opt_input_format, ":", 0);
 671         if (!tok[0] || !(imod = sr_input_find(tok[0])))
 672                 g_critical("Input module '%s' not found.", opt_input_format);
 673
 674         printf("ID: %s\nName: %s\n", sr_input_id_get(imod),
 675                         sr_input_name_get(imod));
 676         printf("Description: %s\n", sr_input_description_get(imod));
 677         if ((opts = sr_input_options_get(imod))) {
 678                 printf("Options:\n");
 679                 for (i = 0; opts[i]; i++) {
 680                         printf("  %s: %s", opts[i]->id, opts[i]->desc);
 681                         if (opts[i]->def) {
 682                                 s = g_variant_print(opts[i]->def, FALSE);
 683                                 printf(" (default %s", s);
 684                                 g_free(s);
 685                                 if (opts[i]->values) {
 686                                         printf(", possible values ");
 687                                         for (l = opts[i]->values; l; l = l->next) {
 688                                                 s = g_variant_print((GVariant *)l->data, FALSE);
 689                                                 printf("%s%s", s, l->next ? ", " : "");
 690                                                 g_free(s);
 691                                         }
 692                                 }
 693                                 printf(")");
 694                         }
 695                         printf("\n");
 696                 }
 697                 sr_input_options_free(opts);
 698         }
 699         g_strfreev(tok);
 700 }
 701
 702 void show_output(void)
 703 {
 704         const struct sr_output_module *omod;
 705         const struct sr_option **opts;
 706         GSList *l;
 707         int i;
 708         char *s, **tok;
 709
 710         tok = g_strsplit(opt_output_format, ":", 0);
 711         if (!tok[0] || !(omod = sr_output_find(tok[0])))
 712                 g_critical("Output module '%s' not found.", opt_output_format);
 713
 714         printf("ID: %s\nName: %s\n", sr_output_id_get(omod),
 715                         sr_output_name_get(omod));
 716         printf("Description: %s\n", sr_output_description_get(omod));
 717         if ((opts = sr_output_options_get(omod))) {
 718                 printf("Options:\n");
 719                 for (i = 0; opts[i]; i++) {
 720                         printf("  %s: %s", opts[i]->id, opts[i]->desc);
 721                         if (opts[i]->def) {
 722                                 s = g_variant_print(opts[i]->def, FALSE);
 723                                 printf(" (default %s", s);
 724                                 g_free(s);
 725                                 if (opts[i]->values) {
 726                                         printf(", possible values ");
 727                                         for (l = opts[i]->values; l; l = l->next) {
 728                                                 s = g_variant_print((GVariant *)l->data, FALSE);
 729                                                 printf("%s%s", s, l->next ? ", " : "");
 730                                                 g_free(s);
 731                                         }
 732                                 }
 733                                 printf(")");
 734                         }
 735                         printf("\n");
 736                 }
 737                 sr_output_options_free(opts);
 738         }
 739         g_strfreev(tok);
 740 }
 741