decode.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 <stdlib.h>
  22 #include <string.h>
  23 #include <glib.h>
  24 #include "sigrok-cli.h"
  25
  26 #ifdef HAVE_SRD
  27 static GHashTable *pd_ann_visible = NULL;
  28 static GHashTable *pd_meta_visible = NULL;
  29 static GHashTable *pd_binary_visible = NULL;
  30 static GHashTable *pd_channel_maps = NULL;
  31
  32 extern struct srd_session *srd_sess;
  33
  34 static int opts_to_gvar(struct srd_decoder *dec, GHashTable *hash,
  35                 GHashTable **options)
  36 {
  37         struct srd_decoder_option *o;
  38         GSList *optl;
  39         GVariant *gvar;
  40         gint64 val_int;
  41         double val_dbl;
  42         int ret;
  43         char *val_str, *conv;
  44
  45         ret = TRUE;
  46         *options = g_hash_table_new_full(g_str_hash, g_str_equal, g_free,
  47                         (GDestroyNotify)g_variant_unref);
  48
  49         for (optl = dec->options; optl; optl = optl->next) {
  50                 o = optl->data;
  51                 if (!(val_str = g_hash_table_lookup(hash, o->id)))
  52                         /* Not specified. */
  53                         continue;
  54                 if (g_variant_is_of_type(o->def, G_VARIANT_TYPE_STRING)) {
  55                         gvar = g_variant_new_string(val_str);
  56                 } else if (g_variant_is_of_type(o->def, G_VARIANT_TYPE_INT64)) {
  57                         conv = NULL;
  58                         val_int = strtoll(val_str, &conv, 0);
  59                         if (!conv || conv == val_str || *conv) {
  60                                 g_critical("Protocol decoder '%s' option '%s' "
  61                                                 "requires a number.", dec->name, o->id);
  62                                 ret = FALSE;
  63                                 break;
  64                         }
  65                         gvar = g_variant_new_int64(val_int);
  66                 } else if (g_variant_is_of_type(o->def, G_VARIANT_TYPE_DOUBLE)) {
  67                         conv = NULL;
  68                         val_dbl = strtod(val_str, &conv);
  69                         if (!conv || conv == val_str || *conv) {
  70                                 g_critical("Protocol decoder '%s' option '%s' requires a float number.",
  71                                         dec->name, o->id);
  72                                 ret = FALSE;
  73                                 break;
  74                         }
  75                         gvar = g_variant_new_double(val_dbl);
  76                 } else {
  77                         g_critical("Unsupported type for option '%s' (%s)",
  78                                         o->id, g_variant_get_type_string(o->def));
  79                         ret = FALSE;
  80                         break;
  81                 }
  82                 g_variant_ref_sink(gvar);
  83                 g_hash_table_insert(*options, g_strdup(o->id), gvar);
  84                 g_hash_table_remove(hash, o->id);
  85         }
  86
  87         return ret;
  88 }
  89
  90 static int move_hash_element(GHashTable *src, GHashTable *dest, void *key)
  91 {
  92         void *orig_key, *value;
  93
  94         if (!g_hash_table_lookup_extended(src, key, &orig_key, &value))
  95                 /* Not specified. */
  96                 return FALSE;
  97         g_hash_table_steal(src, orig_key);
  98         g_hash_table_insert(dest, orig_key, value);
  99
 100         return TRUE;
 101 }
 102
 103 static GHashTable *extract_channel_map(struct srd_decoder *dec, GHashTable *hash)
 104 {
 105         GHashTable *channel_map;
 106         struct srd_channel *pdch;
 107         GSList *l;
 108
 109         channel_map = g_hash_table_new_full(g_str_hash, g_str_equal,
 110                                           g_free, g_free);
 111
 112         for (l = dec->channels; l; l = l->next) {
 113                 pdch = l->data;
 114                 move_hash_element(hash, channel_map, pdch->id);
 115         }
 116         for (l = dec->opt_channels; l; l = l->next) {
 117                 pdch = l->data;
 118                 move_hash_element(hash, channel_map, pdch->id);
 119         }
 120
 121         return channel_map;
 122 }
 123
 124 static int register_pd(char *opt_pds, char *opt_pd_annotations)
 125 {
 126         int ret;
 127         struct srd_decoder *dec;
 128         struct srd_decoder_inst *di, *di_prior;
 129         char **pdtokens, **pdtok, *pd_name;
 130         GHashTable *pd_opthash, *options, *channels;
 131         GList *leftover, *l;
 132
 133         ret = 0;
 134         pd_name = NULL;
 135         di_prior = NULL;
 136         pd_opthash = options = channels = NULL;
 137
 138         pdtokens = g_strsplit(opt_pds, ",", 0);
 139         for (pdtok = pdtokens; *pdtok; pdtok++) {
 140                 if (!(pd_opthash = parse_generic_arg(*pdtok, TRUE))) {
 141                         g_critical("Invalid protocol decoder option '%s'.", *pdtok);
 142                         break;
 143                 }
 144
 145                 pd_name = g_strdup(g_hash_table_lookup(pd_opthash, "sigrok_key"));
 146                 g_hash_table_remove(pd_opthash, "sigrok_key");
 147                 if (srd_decoder_load(pd_name) != SRD_OK) {
 148                         g_critical("Failed to load protocol decoder %s.", pd_name);
 149                         ret = 1;
 150                         break;
 151                 }
 152                 if (!(dec = srd_decoder_get_by_id(pd_name))) {
 153                         g_critical("Failed to get decoder %s by id.", pd_name);
 154                         ret = 1;
 155                         break;
 156                 }
 157
 158                 /* Convert decoder option and channel values to GVariant. */
 159                 if (!opts_to_gvar(dec, pd_opthash, &options)) {
 160                         ret = 1;
 161                         break;
 162                 }
 163                 channels = extract_channel_map(dec, pd_opthash);
 164
 165                 if (g_hash_table_size(pd_opthash) > 0) {
 166                         leftover = g_hash_table_get_keys(pd_opthash);
 167                         for (l = leftover; l; l = l->next)
 168                                 g_critical("Unknown option or channel '%s'", (char *)l->data);
 169                         g_list_free(leftover);
 170                         break;
 171                 }
 172
 173                 if (!(di = srd_inst_new(srd_sess, pd_name, options))) {
 174                         g_critical("Failed to instantiate protocol decoder %s.", pd_name);
 175                         ret = 1;
 176                         break;
 177                 }
 178
 179                 if (pdtok == pdtokens) {
 180                         /*
 181                          * Save the channel setup for later, but only on the
 182                          * first decoder (stacked decoders don't get channels).
 183                          */
 184                         g_hash_table_insert(pd_channel_maps, g_strdup(di->inst_id), channels);
 185                         channels = NULL;
 186                 }
 187
 188                 /*
 189                  * If no annotation list was specified, add them all in now.
 190                  * This will be pared down later to leave only the last PD
 191                  * in the stack.
 192                  */
 193                 if (!opt_pd_annotations) {
 194                         g_hash_table_insert(pd_ann_visible, g_strdup(di->decoder->id),
 195                                         g_slist_append(NULL, GINT_TO_POINTER(-1)));
 196                 }
 197                 if (di_prior) {
 198                         if (srd_inst_stack(srd_sess, di_prior, di) != SRD_OK) {
 199                                 g_critical("Failed to stack %s -> %s.",
 200                                         di_prior->inst_id, di->inst_id);
 201                                 ret = 1;
 202                                 break;
 203                         }
 204                         /* Remove annotations from prior levels. */
 205                         if (!opt_pd_annotations)
 206                                 g_hash_table_remove(pd_ann_visible, di_prior->inst_id);
 207                 }
 208                 di_prior = di;
 209                 g_free(pd_name);
 210                 g_hash_table_destroy(pd_opthash);
 211                 g_hash_table_destroy(options);
 212                 pd_opthash = options = NULL;
 213         }
 214
 215         if (pd_opthash)
 216                 g_hash_table_destroy(pd_opthash);
 217         if (options)
 218                 g_hash_table_destroy(options);
 219         if (channels)
 220                 g_hash_table_destroy(channels);
 221
 222         g_strfreev(pdtokens);
 223
 224         return ret;
 225 }
 226
 227 /*
 228  * Register all the PDs from all stacks.
 229  *
 230  * Each PD string is a single stack such as "uart:baudrate=19200,modbus".
 231  */
 232 int register_pds(gchar **all_pds, char *opt_pd_annotations)
 233 {
 234         int ret;
 235
 236         ret = 0;
 237         pd_ann_visible = g_hash_table_new_full(g_str_hash, g_str_equal,
 238                                                g_free, NULL);
 239         pd_channel_maps = g_hash_table_new_full(g_str_hash,
 240                 g_str_equal, g_free, (GDestroyNotify)g_hash_table_destroy);
 241
 242         for (int i = 0; all_pds[i]; i++)
 243                 ret += register_pd(all_pds[i], opt_pd_annotations);
 244
 245         return ret;
 246 }
 247
 248 static void map_pd_inst_channels(void *key, void *value, void *user_data)
 249 {
 250         GHashTable *channel_map;
 251         GHashTable *channel_indices;
 252         GSList *channel_list;
 253         struct srd_decoder_inst *di;
 254         GVariant *var;
 255         void *channel_id;
 256         void *channel_target;
 257         struct sr_channel *ch;
 258         GHashTableIter iter;
 259
 260         channel_map = value;
 261         channel_list = user_data;
 262
 263         di = srd_inst_find_by_id(srd_sess, key);
 264         if (!di) {
 265                 g_critical("Protocol decoder instance \"%s\" not found.",
 266                            (char *)key);
 267                 return;
 268         }
 269         channel_indices = g_hash_table_new_full(g_str_hash, g_str_equal, g_free,
 270                                               (GDestroyNotify)g_variant_unref);
 271
 272         g_hash_table_iter_init(&iter, channel_map);
 273         while (g_hash_table_iter_next(&iter, &channel_id, &channel_target)) {
 274                 ch = find_channel(channel_list, channel_target);
 275                 if (!ch) {
 276                         g_printerr("cli: No channel with name \"%s\" found.\n",
 277                                    (char *)channel_target);
 278                         continue;
 279                 }
 280                 if (!ch->enabled)
 281                         g_printerr("cli: Target channel \"%s\" not enabled.\n",
 282                                    (char *)channel_target);
 283
 284                 var = g_variant_new_int32(ch->index);
 285                 g_variant_ref_sink(var);
 286                 g_hash_table_insert(channel_indices, g_strdup(channel_id), var);
 287         }
 288
 289         srd_inst_channel_set_all(di, channel_indices);
 290         g_hash_table_destroy(channel_indices);
 291 }
 292
 293 void map_pd_channels(struct sr_dev_inst *sdi)
 294 {
 295         GSList *channels;
 296
 297         channels = sr_dev_inst_channels_get(sdi);
 298
 299         if (pd_channel_maps) {
 300                 g_hash_table_foreach(pd_channel_maps, &map_pd_inst_channels,
 301                                      channels);
 302                 g_hash_table_destroy(pd_channel_maps);
 303                 pd_channel_maps = NULL;
 304         }
 305 }
 306
 307 int setup_pd_annotations(char *opt_pd_annotations)
 308 {
 309         GSList *l, *l_ann;
 310         struct srd_decoder *dec;
 311         int ann_class;
 312         char **pds, **pdtok, **keyval, **annlist, **ann, **ann_descr;
 313
 314         /* Set up custom list of PDs and annotations to show. */
 315         pds = g_strsplit(opt_pd_annotations, ",", 0);
 316         for (pdtok = pds; *pdtok && **pdtok; pdtok++) {
 317                 keyval = g_strsplit(*pdtok, "=", 0);
 318                 if (!(dec = srd_decoder_get_by_id(keyval[0]))) {
 319                         g_critical("Protocol decoder '%s' not found.", keyval[0]);
 320                         g_strfreev(keyval);
 321                         g_strfreev(pds);
 322                         return 1;
 323                 }
 324                 if (!dec->annotations) {
 325                         g_critical("Protocol decoder '%s' has no annotations.", keyval[0]);
 326                         g_strfreev(keyval);
 327                         g_strfreev(pds);
 328                         return 1;
 329                 }
 330                 if (g_strv_length(keyval) == 2 && keyval[1][0] != '\0') {
 331                         annlist = g_strsplit(keyval[1], ":", 0);
 332                         for (ann = annlist; *ann && **ann; ann++) {
 333                                 ann_class = 0;
 334                                 for (l = dec->annotations; l; l = l->next, ann_class++) {
 335                                         ann_descr = l->data;
 336                                         if (!canon_cmp(ann_descr[0], *ann))
 337                                                 /* Found it. */
 338                                                 break;
 339                                 }
 340                                 if (!l) {
 341                                         g_critical("Annotation '%s' not found "
 342                                                         "for protocol decoder '%s'.", *ann, keyval[0]);
 343                                         g_strfreev(keyval);
 344                                         g_strfreev(pds);
 345                                         return 1;
 346                                 }
 347                                 l_ann = g_hash_table_lookup(pd_ann_visible, keyval[0]);
 348                                 l_ann = g_slist_append(l_ann, GINT_TO_POINTER(ann_class));
 349                                 g_hash_table_replace(pd_ann_visible, g_strdup(keyval[0]), l_ann);
 350                                 g_debug("cli: Showing protocol decoder %s annotation "
 351                                                 "class %d (%s).", keyval[0], ann_class, ann_descr[0]);
 352                         }
 353                 } else {
 354                         /* No class specified: show all of them. */
 355                                 g_hash_table_insert(pd_ann_visible, g_strdup(keyval[0]),
 356                                                 g_slist_append(NULL, GINT_TO_POINTER(-1)));
 357                         g_debug("cli: Showing all annotation classes for protocol "
 358                                         "decoder %s.", keyval[0]);
 359                 }
 360                 g_strfreev(keyval);
 361         }
 362         g_strfreev(pds);
 363
 364         return 0;
 365 }
 366
 367 int setup_pd_meta(char *opt_pd_meta)
 368 {
 369         struct srd_decoder *dec;
 370         char **pds, **pdtok;
 371
 372         pd_meta_visible = g_hash_table_new_full(g_str_hash, g_int_equal,
 373                         g_free, NULL);
 374         pds = g_strsplit(opt_pd_meta, ",", 0);
 375         for (pdtok = pds; *pdtok && **pdtok; pdtok++) {
 376                 if (!(dec = srd_decoder_get_by_id(*pdtok))) {
 377                         g_critical("Protocol decoder '%s' not found.", *pdtok);
 378                         return 1;
 379                 }
 380                 g_debug("cli: Showing protocol decoder meta output from '%s'.", *pdtok);
 381                 g_hash_table_insert(pd_meta_visible, g_strdup(*pdtok), NULL);
 382         }
 383         g_strfreev(pds);
 384
 385         return 0;
 386 }
 387
 388 int setup_pd_binary(char *opt_pd_binary)
 389 {
 390         GSList *l;
 391         struct srd_decoder *dec;
 392         int bin_class;
 393         char **pds, **pdtok, **keyval, **bin_name;
 394
 395         pd_binary_visible = g_hash_table_new_full(g_str_hash, g_int_equal,
 396                         g_free, NULL);
 397         pds = g_strsplit(opt_pd_binary, ",", 0);
 398         for (pdtok = pds; *pdtok && **pdtok; pdtok++) {
 399                 keyval = g_strsplit(*pdtok, "=", 0);
 400                 if (!(dec = srd_decoder_get_by_id(keyval[0]))) {
 401                         g_critical("Protocol decoder '%s' not found.", keyval[0]);
 402                         return 1;
 403                 }
 404                 if (!dec->binary) {
 405                         g_critical("Protocol decoder '%s' has no binary output.", keyval[0]);
 406                         return 1;
 407                 }
 408                 bin_class = 0;
 409                 if (g_strv_length(keyval) == 2) {
 410                         for (l = dec->binary; l; l = l->next, bin_class++) {
 411                                 bin_name = l->data;
 412                                 if (!strcmp(bin_name[0], keyval[1]))
 413                                         /* Found it. */
 414                                         break;
 415                         }
 416                         if (!l) {
 417                                 g_critical("binary output '%s' not found "
 418                                                 "for protocol decoder '%s'.", keyval[1], keyval[0]);
 419                                 return 1;
 420                         }
 421                         g_debug("cli: Showing protocol decoder %s binary class "
 422                                         "%d (%s).", keyval[0], bin_class, bin_name[0]);
 423                 } else {
 424                         /* No class specified: output all of them. */
 425                         bin_class = -1;
 426                         g_debug("cli: Showing all binary classes for protocol "
 427                                         "decoder %s.", keyval[0]);
 428                 }
 429                 g_hash_table_insert(pd_binary_visible, g_strdup(keyval[0]), GINT_TO_POINTER(bin_class));
 430                 g_strfreev(keyval);
 431         }
 432         g_strfreev(pds);
 433
 434         return 0;
 435 }
 436
 437 void show_pd_annotations(struct srd_proto_data *pdata, void *cb_data)
 438 {
 439         struct srd_decoder *dec;
 440         struct srd_proto_data_annotation *pda;
 441         GSList *ann_list, *l;
 442         int i;
 443         char **ann_descr;
 444         gboolean show_ann, show_snum, show_class, show_quotes, show_abbrev;
 445         const char *quote;
 446
 447         (void)cb_data;
 448
 449         if (!pd_ann_visible)
 450                 return;
 451
 452         if (!g_hash_table_lookup_extended(pd_ann_visible, pdata->pdo->di->decoder->id,
 453                         NULL, (void **)&ann_list)) {
 454                 /* Not in the list of PDs whose annotations we're showing. */
 455                 return;
 456         }
 457
 458         dec = pdata->pdo->di->decoder;
 459         pda = pdata->data;
 460         show_ann = FALSE;
 461         for (l = ann_list; l; l = l->next) {
 462                 if (GPOINTER_TO_INT(l->data) == -1
 463                                 || GPOINTER_TO_INT(l->data) == pda->ann_class) {
 464                         show_ann = TRUE;
 465                         break;
 466                 }
 467         }
 468         if (!show_ann)
 469                 return;
 470
 471         /*
 472          * Determine which fields of the annotation to display. Inspect
 473          * user specified options as well as the verbosity of the log level:
 474          * - Optionally show the sample numbers for the annotation's span.
 475          * - Always show the protocol decoder ID.
 476          * - Optionally show the annotation's class description.
 477          * - Always show the longest annotation text.
 478          * - Optionally show alternative annotation text (abbreviations
 479          *   for different zoom levels).
 480          * - Optionally put quote marks around annotation text, when
 481          *   recipients might have to deal with a set of text variants.
 482          */
 483         show_snum = show_class = show_quotes = show_abbrev = FALSE;
 484         if (opt_pd_samplenum || opt_loglevel > SR_LOG_WARN) {
 485                 show_snum = TRUE;
 486         }
 487         if (opt_loglevel > SR_LOG_WARN) {
 488                 show_quotes = TRUE;
 489         }
 490         if (opt_loglevel > SR_LOG_INFO) {
 491                 show_class = TRUE;
 492                 show_abbrev = TRUE;
 493         }
 494
 495         /*
 496          * Display the annotation's fields after the layout was
 497          * determined above.
 498          */
 499         if (show_snum) {
 500                 printf("%" PRIu64 "-%" PRIu64 " ",
 501                         pdata->start_sample, pdata->end_sample);
 502         }
 503         printf("%s: ", pdata->pdo->proto_id);
 504         if (show_class) {
 505                 ann_descr = g_slist_nth_data(dec->annotations, pda->ann_class);
 506                 printf("%s: ", ann_descr[0]);
 507         }
 508         quote = show_quotes ? "\"" : "";
 509         printf("%s%s%s", quote, pda->ann_text[0], quote);
 510         if (show_abbrev) {
 511                 for (i = 1; pda->ann_text[i]; i++)
 512                         printf(" %s%s%s", quote, pda->ann_text[i], quote);
 513         }
 514         printf("\n");
 515         fflush(stdout);
 516 }
 517
 518 void show_pd_meta(struct srd_proto_data *pdata, void *cb_data)
 519 {
 520         (void)cb_data;
 521
 522         if (!g_hash_table_lookup_extended(pd_meta_visible,
 523                         pdata->pdo->di->decoder->id, NULL, NULL))
 524                 /* Not in the list of PDs whose meta output we're showing. */
 525                 return;
 526
 527         if (opt_pd_samplenum || opt_loglevel > SR_LOG_WARN)
 528                 printf("%"PRIu64"-%"PRIu64" ", pdata->start_sample, pdata->end_sample);
 529         printf("%s: ", pdata->pdo->proto_id);
 530         printf("%s: %s", pdata->pdo->meta_name, g_variant_print(pdata->data, FALSE));
 531         printf("\n");
 532         fflush(stdout);
 533 }
 534
 535 void show_pd_binary(struct srd_proto_data *pdata, void *cb_data)
 536 {
 537         struct srd_proto_data_binary *pdb;
 538         gpointer classp;
 539         int classi;
 540
 541         (void)cb_data;
 542
 543         if (!g_hash_table_lookup_extended(pd_binary_visible,
 544                         pdata->pdo->di->decoder->id, NULL, (void **)&classp))
 545                 /* Not in the list of PDs whose meta output we're showing. */
 546                 return;
 547
 548         classi = GPOINTER_TO_INT(classp);
 549         pdb = pdata->data;
 550         if (classi != -1 && classi != pdb->bin_class)
 551                 /* Not showing this binary class. */
 552                 return;
 553
 554         /* Just send the binary output to stdout, no embellishments. */
 555         fwrite(pdb->data, pdb->size, 1, stdout);
 556         fflush(stdout);
 557 }
 558 #endif