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 "sigrok-cli.h"
  21 #include "config.h"
  22 #include <glib.h>
  23
  24 #ifdef HAVE_SRD
  25 static GHashTable *pd_ann_visible = NULL;
  26 static GHashTable *pd_meta_visible = NULL;
  27 static GHashTable *pd_binary_visible = NULL;
  28 static GHashTable *pd_channel_maps = NULL;
  29
  30 extern struct srd_session *srd_sess;
  31 extern gint opt_loglevel;
  32
  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 /* Register the given PDs for this session.
 113  * Accepts a string of the form: "spi:sck=3:sdata=4,spi:sck=3:sdata=5"
 114  * That will instantiate two SPI decoders on the clock but different data
 115  * lines.
 116  */
 117 int register_pds(const char *opt_pds, char *opt_pd_annotations)
 118 {
 119         struct srd_decoder *dec;
 120         GHashTable *pd_opthash, *options, *channels;
 121         GList *leftover, *l;
 122         struct srd_decoder_inst *di;
 123         int ret;
 124         char **pdtokens, **pdtok, *pd_name;
 125
 126         pd_ann_visible = g_hash_table_new_full(g_str_hash, g_str_equal,
 127                                                g_free, NULL);
 128         ret = 0;
 129         pd_name = NULL;
 130         pd_opthash = options = channels = pd_channel_maps = NULL;
 131         pdtokens = g_strsplit(opt_pds, ",", 0);
 132         for (pdtok = pdtokens; *pdtok; pdtok++) {
 133                 if (!(pd_opthash = parse_generic_arg(*pdtok, TRUE))) {
 134                         g_critical("Invalid protocol decoder option '%s'.", *pdtok);
 135                         break;
 136                 }
 137
 138                 pd_name = g_strdup(g_hash_table_lookup(pd_opthash, "sigrok_key"));
 139                 g_hash_table_remove(pd_opthash, "sigrok_key");
 140                 if (srd_decoder_load(pd_name) != SRD_OK) {
 141                         g_critical("Failed to load protocol decoder %s.", pd_name);
 142                         ret = 1;
 143                         break;
 144                 }
 145                 dec = srd_decoder_get_by_id(pd_name);
 146
 147                 /* Convert decoder option and channel values to GVariant. */
 148                 if (!opts_to_gvar(dec, pd_opthash, &options)) {
 149                         ret = 1;
 150                         break;
 151                 }
 152                 channels = extract_channel_map(dec, pd_opthash);
 153
 154                 if (g_hash_table_size(pd_opthash) > 0) {
 155                         leftover = g_hash_table_get_keys(pd_opthash);
 156                         for (l = leftover; l; l = l->next)
 157                                 g_critical("Unknown option or channel '%s'", (char *)l->data);
 158                         g_list_free(leftover);
 159                         break;
 160                 }
 161
 162                 if (!(di = srd_inst_new(srd_sess, pd_name, options))) {
 163                         g_critical("Failed to instantiate protocol decoder %s.", pd_name);
 164                         ret = 1;
 165                         break;
 166                 }
 167
 168                 if (pdtok == pdtokens) {
 169                         /*
 170                          * Save the channel setup for later, but only on the
 171                          * first decoder (stacked decoders don't get channels).
 172                          */
 173                         pd_channel_maps = g_hash_table_new_full(g_str_hash,
 174                                         g_str_equal, g_free, (GDestroyNotify)g_hash_table_destroy);
 175                         g_hash_table_insert(pd_channel_maps, g_strdup(di->inst_id), channels);
 176                         channels = NULL;
 177                 }
 178
 179                 /* If no annotation list was specified, add them all in now.
 180                  * This will be pared down later to leave only the last PD
 181                  * in the stack.
 182                  */
 183                 if (!opt_pd_annotations)
 184                         g_hash_table_insert(pd_ann_visible, g_strdup(di->inst_id),
 185                                         g_slist_append(NULL, GINT_TO_POINTER(-1)));
 186         }
 187
 188         g_strfreev(pdtokens);
 189         if (pd_opthash)
 190                 g_hash_table_destroy(pd_opthash);
 191         if (options)
 192                 g_hash_table_destroy(options);
 193         if (channels)
 194                 g_hash_table_destroy(channels);
 195         if (pd_name)
 196                 g_free(pd_name);
 197
 198         return ret;
 199 }
 200
 201 static void map_pd_inst_channels(void *key, void *value, void *user_data)
 202 {
 203         GHashTable *channel_map;
 204         GHashTable *channel_indices;
 205         GSList *channel_list;
 206         struct srd_decoder_inst *di;
 207         GVariant *var;
 208         void *channel_id;
 209         void *channel_target;
 210         struct sr_channel *ch;
 211         GHashTableIter iter;
 212         int num_channels;
 213
 214         channel_map = value;
 215         channel_list = user_data;
 216
 217         di = srd_inst_find_by_id(srd_sess, key);
 218         if (!di) {
 219                 g_critical("Protocol decoder instance \"%s\" not found.",
 220                            (char *)key);
 221                 return;
 222         }
 223         channel_indices = g_hash_table_new_full(g_str_hash, g_str_equal, g_free,
 224                                               (GDestroyNotify)g_variant_unref);
 225
 226         g_hash_table_iter_init(&iter, channel_map);
 227         while (g_hash_table_iter_next(&iter, &channel_id, &channel_target)) {
 228                 ch = find_channel(channel_list, channel_target);
 229                 if (!ch) {
 230                         g_printerr("cli: No channel with name \"%s\" found.\n",
 231                                    (char *)channel_target);
 232                         continue;
 233                 }
 234                 if (!ch->enabled)
 235                         g_printerr("cli: Target channel \"%s\" not enabled.\n",
 236                                    (char *)channel_target);
 237
 238                 var = g_variant_new_int32(ch->index);
 239                 g_variant_ref_sink(var);
 240                 g_hash_table_insert(channel_indices, g_strdup(channel_id), var);
 241         }
 242
 243         num_channels = g_slist_length(channel_list);
 244         srd_inst_channel_set_all(di, channel_indices, (num_channels + 7) / 8);
 245 }
 246
 247 void map_pd_channels(struct sr_dev_inst *sdi)
 248 {
 249         if (pd_channel_maps) {
 250                 g_hash_table_foreach(pd_channel_maps, &map_pd_inst_channels,
 251                                      sdi->channels);
 252                 g_hash_table_destroy(pd_channel_maps);
 253                 pd_channel_maps = NULL;
 254         }
 255 }
 256
 257 int setup_pd_stack(char *opt_pds, char *opt_pd_stack, char *opt_pd_annotations)
 258 {
 259         struct srd_decoder_inst *di_from, *di_to;
 260         int ret, i;
 261         char **pds, **ids;
 262
 263         /* Set up the protocol decoder stack. */
 264         pds = g_strsplit(opt_pds, ",", 0);
 265         if (g_strv_length(pds) > 1) {
 266                 if (opt_pd_stack) {
 267                         /* A stack setup was specified, use that. */
 268                         g_strfreev(pds);
 269                         pds = g_strsplit(opt_pd_stack, ",", 0);
 270                         if (g_strv_length(pds) < 2) {
 271                                 g_strfreev(pds);
 272                                 g_critical("Specify at least two protocol decoders to stack.");
 273                                 return 1;
 274                         }
 275                 }
 276
 277                 /* First PD goes at the bottom of the stack. */
 278                 ids = g_strsplit(pds[0], ":", 0);
 279                 if (!(di_from = srd_inst_find_by_id(srd_sess, ids[0]))) {
 280                         g_strfreev(ids);
 281                         g_critical("Cannot stack protocol decoder '%s': "
 282                                         "instance not found.", pds[0]);
 283                         return 1;
 284                 }
 285                 g_strfreev(ids);
 286
 287                 /* Every subsequent PD goes on top. */
 288                 for (i = 1; pds[i]; i++) {
 289                         ids = g_strsplit(pds[i], ":", 0);
 290                         if (!(di_to = srd_inst_find_by_id(srd_sess, ids[0]))) {
 291                                 g_strfreev(ids);
 292                                 g_critical("Cannot stack protocol decoder '%s': "
 293                                                 "instance not found.", pds[i]);
 294                                 return 1;
 295                         }
 296                         g_strfreev(ids);
 297                         if ((ret = srd_inst_stack(srd_sess, di_from, di_to)) != SRD_OK)
 298                                 return 1;
 299
 300                         /* Don't show annotation from this PD. Only the last PD in
 301                          * the stack will be left on the annotation list (unless
 302                          * the annotation list was specifically provided).
 303                          */
 304                         if (!opt_pd_annotations)
 305                                 g_hash_table_remove(pd_ann_visible, di_from->inst_id);
 306
 307                         di_from = di_to;
 308                 }
 309         }
 310         g_strfreev(pds);
 311
 312         return 0;
 313 }
 314
 315 int setup_pd_annotations(char *opt_pd_annotations)
 316 {
 317         GSList *l, *l_ann;
 318         struct srd_decoder *dec;
 319         int ann_class;
 320         char **pds, **pdtok, **keyval, **annlist, **ann, **ann_descr;
 321
 322         /* Set up custom list of PDs and annotations to show. */
 323         pds = g_strsplit(opt_pd_annotations, ",", 0);
 324         for (pdtok = pds; *pdtok && **pdtok; pdtok++) {
 325                 keyval = g_strsplit(*pdtok, "=", 0);
 326                 if (!(dec = srd_decoder_get_by_id(keyval[0]))) {
 327                         g_critical("Protocol decoder '%s' not found.", keyval[0]);
 328                         return 1;
 329                 }
 330                 if (!dec->annotations) {
 331                         g_critical("Protocol decoder '%s' has no annotations.", keyval[0]);
 332                         return 1;
 333                 }
 334                 if (g_strv_length(keyval) == 2 && keyval[1][0] != '\0') {
 335                         annlist = g_strsplit(keyval[1], ":", 0);
 336                         for (ann = annlist; *ann && **ann; ann++) {
 337                                 ann_class = 0;
 338                                 for (l = dec->annotations; l; l = l->next, ann_class++) {
 339                                         ann_descr = l->data;
 340                                         if (!canon_cmp(ann_descr[0], *ann))
 341                                                 /* Found it. */
 342                                                 break;
 343                                 }
 344                                 if (!l) {
 345                                         g_critical("Annotation '%s' not found "
 346                                                         "for protocol decoder '%s'.", *ann, keyval[0]);
 347                                         return 1;
 348                                 }
 349                                 l_ann = g_hash_table_lookup(pd_ann_visible, keyval[0]);
 350                                 l_ann = g_slist_append(l_ann, GINT_TO_POINTER(ann_class));
 351                                 g_hash_table_replace(pd_ann_visible, g_strdup(keyval[0]), l_ann);
 352                                 g_debug("cli: Showing protocol decoder %s annotation "
 353                                                 "class %d (%s).", keyval[0], ann_class, ann_descr[0]);
 354                         }
 355                 } else {
 356                         /* No class specified: show all of them. */
 357                                 g_hash_table_insert(pd_ann_visible, g_strdup(keyval[0]),
 358                                                 g_slist_append(NULL, GINT_TO_POINTER(-1)));
 359                         g_debug("cli: Showing all annotation classes for protocol "
 360                                         "decoder %s.", keyval[0]);
 361                 }
 362                 g_strfreev(keyval);
 363         }
 364         g_strfreev(pds);
 365
 366         return 0;
 367 }
 368
 369 int setup_pd_meta(char *opt_pd_meta)
 370 {
 371         struct srd_decoder *dec;
 372         char **pds, **pdtok;
 373
 374         pd_meta_visible = g_hash_table_new_full(g_str_hash, g_int_equal,
 375                         g_free, NULL);
 376         pds = g_strsplit(opt_pd_meta, ",", 0);
 377         for (pdtok = pds; *pdtok && **pdtok; pdtok++) {
 378                 if (!(dec = srd_decoder_get_by_id(*pdtok))) {
 379                         g_critical("Protocol decoder '%s' not found.", *pdtok);
 380                         return 1;
 381                 }
 382                 g_debug("cli: Showing protocol decoder meta output from '%s'.", *pdtok);
 383                 g_hash_table_insert(pd_meta_visible, g_strdup(*pdtok), NULL);
 384         }
 385         g_strfreev(pds);
 386
 387         return 0;
 388 }
 389
 390 int setup_pd_binary(char *opt_pd_binary)
 391 {
 392         GSList *l;
 393         struct srd_decoder *dec;
 394         int bin_class;
 395         char **pds, **pdtok, **keyval, **bin_name;
 396
 397         pd_binary_visible = g_hash_table_new_full(g_str_hash, g_int_equal,
 398                         g_free, NULL);
 399         pds = g_strsplit(opt_pd_binary, ",", 0);
 400         for (pdtok = pds; *pdtok && **pdtok; pdtok++) {
 401                 keyval = g_strsplit(*pdtok, "=", 0);
 402                 if (!(dec = srd_decoder_get_by_id(keyval[0]))) {
 403                         g_critical("Protocol decoder '%s' not found.", keyval[0]);
 404                         return 1;
 405                 }
 406                 if (!dec->binary) {
 407                         g_critical("Protocol decoder '%s' has no binary output.", keyval[0]);
 408                         return 1;
 409                 }
 410                 bin_class = 0;
 411                 if (g_strv_length(keyval) == 2) {
 412                         for (l = dec->binary; l; l = l->next, bin_class++) {
 413                                 bin_name = l->data;
 414                                 if (!strcmp(bin_name[0], keyval[1]))
 415                                         /* Found it. */
 416                                         break;
 417                         }
 418                         if (!l) {
 419                                 g_critical("binary output '%s' not found "
 420                                                 "for protocol decoder '%s'.", keyval[1], keyval[0]);
 421                                 return 1;
 422                         }
 423                         g_debug("cli: Showing protocol decoder %s binary class "
 424                                         "%d (%s).", keyval[0], bin_class, bin_name[0]);
 425                 } else {
 426                         /* No class specified: output all of them. */
 427                         bin_class = -1;
 428                         g_debug("cli: Showing all binary classes for protocol "
 429                                         "decoder %s.", keyval[0]);
 430                 }
 431                 g_hash_table_insert(pd_binary_visible, g_strdup(keyval[0]), GINT_TO_POINTER(bin_class));
 432                 g_strfreev(keyval);
 433         }
 434         g_strfreev(pds);
 435
 436         return 0;
 437 }
 438
 439 void show_pd_annotations(struct srd_proto_data *pdata, void *cb_data)
 440 {
 441         struct srd_decoder *dec;
 442         struct srd_proto_data_annotation *pda;
 443         GSList *ann_list, *l;
 444         int i;
 445         char **ann_descr;
 446         gboolean show;
 447
 448         /* 'cb_data' is not used in this specific callback. */
 449         (void)cb_data;
 450
 451         if (!pd_ann_visible)
 452                 return;
 453
 454         if (!g_hash_table_lookup_extended(pd_ann_visible, pdata->pdo->di->inst_id,
 455                         NULL, (void **)&ann_list))
 456                 /* Not in the list of PDs whose annotations we're showing. */
 457                 return;
 458
 459         dec = pdata->pdo->di->decoder;
 460         pda = pdata->data;
 461         show = FALSE;
 462         for (l = ann_list; l; l = l->next) {
 463                 if (GPOINTER_TO_INT(l->data) == -1
 464                                 || GPOINTER_TO_INT(l->data) == pda->ann_format) {
 465                         show = TRUE;
 466                         break;
 467                 }
 468         }
 469         if (!show)
 470                 return;
 471
 472         if (opt_loglevel <= SR_LOG_WARN) {
 473                 /* Show only the longest annotation. */
 474                 printf("%s", pda->ann_text[0]);
 475         } else if (opt_loglevel >= SR_LOG_INFO) {
 476                 /* Sample numbers and quotes around the longest annotation. */
 477                 printf("%"PRIu64"-%"PRIu64"", pdata->start_sample, pdata->end_sample);
 478                 if (opt_loglevel == SR_LOG_INFO) {
 479                         printf(" \"%s\"", pda->ann_text[0]);
 480                 } else {
 481                         /* Protocol decoder id, annotation class,
 482                          * all annotation strings. */
 483                         ann_descr = g_slist_nth_data(dec->annotations, pda->ann_format);
 484                         printf(" %s: %s:", pdata->pdo->proto_id, ann_descr[0]);
 485                         for (i = 0; pda->ann_text[i]; i++)
 486                                 printf(" \"%s\"", pda->ann_text[i]);
 487                 }
 488         }
 489         printf("\n");
 490         fflush(stdout);
 491 }
 492
 493 void show_pd_meta(struct srd_proto_data *pdata, void *cb_data)
 494 {
 495
 496         /* 'cb_data' is not used in this specific callback. */
 497         (void)cb_data;
 498
 499         if (!g_hash_table_lookup_extended(pd_meta_visible,
 500                         pdata->pdo->di->decoder->id, NULL, NULL))
 501                 /* Not in the list of PDs whose meta output we're showing. */
 502                 return;
 503
 504         if (opt_loglevel > SR_LOG_WARN)
 505                 printf("%"PRIu64"-%"PRIu64" ", pdata->start_sample, pdata->end_sample);
 506         printf("%s: ", pdata->pdo->proto_id);
 507         printf("%s: %s", pdata->pdo->meta_name, g_variant_print(pdata->data, FALSE));
 508         printf("\n");
 509         fflush(stdout);
 510 }
 511
 512 void show_pd_binary(struct srd_proto_data *pdata, void *cb_data)
 513 {
 514         struct srd_proto_data_binary *pdb;
 515         gpointer classp;
 516         int class;
 517
 518         /* 'cb_data' is not used in this specific callback. */
 519         (void)cb_data;
 520
 521         if (!g_hash_table_lookup_extended(pd_binary_visible,
 522                         pdata->pdo->di->decoder->id, NULL, (void **)&classp))
 523                 /* Not in the list of PDs whose meta output we're showing. */
 524                 return;
 525
 526         class = GPOINTER_TO_INT(classp);
 527         pdb = pdata->data;
 528         if (class != -1 && class != pdb->bin_class)
 529                 /* Not showing this binary class. */
 530                 return;
 531
 532         /* Just send the binary output to stdout, no embellishments. */
 533         fwrite(pdb->data, pdb->size, 1, stdout);
 534         fflush(stdout);
 535 }
 536 #endif
 537