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