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_probe_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_probe_map(struct srd_decoder *dec, GHashTable *hash)
  92 {
  93         GHashTable *probe_map;
  94         struct srd_probe *p;
  95         GSList *l;
  96
  97         probe_map = g_hash_table_new_full(g_str_hash, g_str_equal,
  98                                           g_free, g_free);
  99
 100         for (l = dec->probes; l; l = l->next) {
 101                 p = l->data;
 102                 move_hash_element(hash, probe_map, p->id);
 103         }
 104         for (l = dec->opt_probes; l; l = l->next) {
 105                 p = l->data;
 106                 move_hash_element(hash, probe_map, p->id);
 107         }
 108
 109         return probe_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, *probes;
 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         pd_probe_maps = g_hash_table_new_full(g_str_hash, g_str_equal, g_free,
 129                                         (GDestroyNotify)g_hash_table_destroy);
 130         ret = 0;
 131         pd_name = NULL;
 132         pd_opthash = options = probes = NULL;
 133         pdtokens = g_strsplit(opt_pds, ",", 0);
 134         for (pdtok = pdtokens; *pdtok; pdtok++) {
 135                 if (!(pd_opthash = parse_generic_arg(*pdtok, TRUE))) {
 136                         g_critical("Invalid protocol decoder option '%s'.", *pdtok);
 137                         break;
 138                 }
 139
 140                 pd_name = g_strdup(g_hash_table_lookup(pd_opthash, "sigrok_key"));
 141                 g_hash_table_remove(pd_opthash, "sigrok_key");
 142                 if (srd_decoder_load(pd_name) != SRD_OK) {
 143                         g_critical("Failed to load protocol decoder %s.", pd_name);
 144                         ret = 1;
 145                         break;
 146                 }
 147                 dec = srd_decoder_get_by_id(pd_name);
 148
 149                 /* Convert decoder option and probe values to GVariant. */
 150                 if (!opts_to_gvar(dec, pd_opthash, &options)) {
 151                         ret = 1;
 152                         break;
 153                 }
 154                 probes = extract_probe_map(dec, pd_opthash);
 155
 156                 if (g_hash_table_size(pd_opthash) > 0) {
 157                         leftover = g_hash_table_get_keys(pd_opthash);
 158                         for (l = leftover; l; l = l->next)
 159                                 g_critical("Unknown option or probe '%s'", (char *)l->data);
 160                         g_list_free(leftover);
 161                         break;
 162                 }
 163
 164                 if (!(di = srd_inst_new(srd_sess, pd_name, options))) {
 165                         g_critical("Failed to instantiate protocol decoder %s.", pd_name);
 166                         ret = 1;
 167                         break;
 168                 }
 169
 170                 /* Save the probe setup for later. */
 171                 g_hash_table_insert(pd_probe_maps, g_strdup(di->inst_id), probes);
 172                 probes = NULL;
 173
 174                 /* If no annotation list was specified, add them all in now.
 175                  * This will be pared down later to leave only the last PD
 176                  * in the stack.
 177                  */
 178                 if (!opt_pd_annotations)
 179                         g_hash_table_insert(pd_ann_visible,
 180                                             g_strdup(di->inst_id), GINT_TO_POINTER(-1));
 181         }
 182
 183         g_strfreev(pdtokens);
 184         if (pd_opthash)
 185                 g_hash_table_destroy(pd_opthash);
 186         if (options)
 187                 g_hash_table_destroy(options);
 188         if (probes)
 189                 g_hash_table_destroy(probes);
 190         if (pd_name)
 191                 g_free(pd_name);
 192
 193         return ret;
 194 }
 195
 196 static void map_pd_inst_probes(void *key, void *value, void *user_data)
 197 {
 198         GHashTable *probe_map;
 199         GHashTable *probe_indices;
 200         GSList *probe_list;
 201         struct srd_decoder_inst *di;
 202         GVariant *var;
 203         void *probe_id;
 204         void *probe_target;
 205         struct sr_probe *probe;
 206         GHashTableIter iter;
 207         int num_probes;
 208
 209         probe_map = value;
 210         probe_list = user_data;
 211
 212         di = srd_inst_find_by_id(srd_sess, key);
 213         if (!di) {
 214                 g_critical("Protocol decoder instance \"%s\" not found.",
 215                            (char *)key);
 216                 return;
 217         }
 218         probe_indices = g_hash_table_new_full(g_str_hash, g_str_equal, g_free,
 219                                               (GDestroyNotify)g_variant_unref);
 220
 221         g_hash_table_iter_init(&iter, probe_map);
 222         while (g_hash_table_iter_next(&iter, &probe_id, &probe_target)) {
 223                 probe = find_probe(probe_list, probe_target);
 224                 if (!probe) {
 225                         g_printerr("cli: No probe with name \"%s\" found.\n",
 226                                    (char *)probe_target);
 227                         continue;
 228                 }
 229                 if (probe->enabled)
 230                         g_printerr("cli: Mapping probe \"%s\" to \"%s\" "
 231                                    "(index %d).\n", (char *)probe_id,
 232                                    (char *)probe_target, probe->index);
 233                 else
 234                         g_printerr("cli: Target probe \"%s\" not enabled.\n",
 235                                    (char *)probe_target);
 236
 237                 var = g_variant_new_int32(probe->index);
 238                 g_variant_ref_sink(var);
 239                 g_hash_table_insert(probe_indices, g_strdup(probe_id), var);
 240         }
 241
 242         num_probes = g_slist_length(probe_list);
 243         srd_inst_probe_set_all(di, probe_indices, (num_probes + 7) / 8);
 244 }
 245
 246 void map_pd_probes(struct sr_dev_inst *sdi)
 247 {
 248         if (pd_probe_maps) {
 249                 g_hash_table_foreach(pd_probe_maps, &map_pd_inst_probes,
 250                                      sdi->probes);
 251                 g_hash_table_destroy(pd_probe_maps);
 252                 pd_probe_maps = NULL;
 253         }
 254 }
 255
 256 int setup_pd_stack(char *opt_pds, char *opt_pd_stack, char *opt_pd_annotations)
 257 {
 258         struct srd_decoder_inst *di_from, *di_to;
 259         int ret, i;
 260         char **pds, **ids;
 261
 262         /* Set up the protocol decoder stack. */
 263         pds = g_strsplit(opt_pds, ",", 0);
 264         if (g_strv_length(pds) > 1) {
 265                 if (opt_pd_stack) {
 266                         /* A stack setup was specified, use that. */
 267                         g_strfreev(pds);
 268                         pds = g_strsplit(opt_pd_stack, ",", 0);
 269                         if (g_strv_length(pds) < 2) {
 270                                 g_strfreev(pds);
 271                                 g_critical("Specify at least two protocol decoders to stack.");
 272                                 return 1;
 273                         }
 274                 }
 275
 276                 /* First PD goes at the bottom of the stack. */
 277                 ids = g_strsplit(pds[0], ":", 0);
 278                 if (!(di_from = srd_inst_find_by_id(srd_sess, ids[0]))) {
 279                         g_strfreev(ids);
 280                         g_critical("Cannot stack protocol decoder '%s': "
 281                                         "instance not found.", pds[0]);
 282                         return 1;
 283                 }
 284                 g_strfreev(ids);
 285
 286                 /* Every subsequent PD goes on top. */
 287                 for (i = 1; pds[i]; i++) {
 288                         ids = g_strsplit(pds[i], ":", 0);
 289                         if (!(di_to = srd_inst_find_by_id(srd_sess, ids[0]))) {
 290                                 g_strfreev(ids);
 291                                 g_critical("Cannot stack protocol decoder '%s': "
 292                                                 "instance not found.", pds[i]);
 293                                 return 1;
 294                         }
 295                         g_strfreev(ids);
 296                         if ((ret = srd_inst_stack(srd_sess, di_from, di_to)) != SRD_OK)
 297                                 return 1;
 298
 299                         /* Don't show annotation from this PD. Only the last PD in
 300                          * the stack will be left on the annotation list (unless
 301                          * the annotation list was specifically provided).
 302                          */
 303                         if (!opt_pd_annotations)
 304                                 g_hash_table_remove(pd_ann_visible,
 305                                                     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;
 318         struct srd_decoder *dec;
 319         int ann_class;
 320         char **pds, **pdtok, **keyval, **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                 ann_class = 0;
 335                 if (g_strv_length(keyval) == 2) {
 336                         for (l = dec->annotations; l; l = l->next, ann_class++) {
 337                                 ann_descr = l->data;
 338                                 if (!canon_cmp(ann_descr[0], keyval[1]))
 339                                         /* Found it. */
 340                                         break;
 341                         }
 342                         if (!l) {
 343                                 g_critical("Annotation '%s' not found "
 344                                                 "for protocol decoder '%s'.", keyval[1], keyval[0]);
 345                                 return 1;
 346                         }
 347                         g_debug("cli: Showing protocol decoder %s annotation "
 348                                         "class %d (%s).", keyval[0], ann_class, ann_descr[0]);
 349                 } else {
 350                         /* No class specified: show all of them. */
 351                         ann_class = -1;
 352                         g_debug("cli: Showing all annotation classes for protocol "
 353                                         "decoder %s.", keyval[0]);
 354                 }
 355                 g_hash_table_insert(pd_ann_visible, g_strdup(keyval[0]), GINT_TO_POINTER(ann_class));
 356                 g_strfreev(keyval);
 357         }
 358         g_strfreev(pds);
 359
 360         return 0;
 361 }
 362
 363 int setup_pd_meta(char *opt_pd_meta)
 364 {
 365         struct srd_decoder *dec;
 366         char **pds, **pdtok;
 367
 368         pd_meta_visible = g_hash_table_new_full(g_str_hash, g_int_equal,
 369                         g_free, NULL);
 370         pds = g_strsplit(opt_pd_meta, ",", 0);
 371         for (pdtok = pds; *pdtok && **pdtok; pdtok++) {
 372                 if (!(dec = srd_decoder_get_by_id(*pdtok))) {
 373                         g_critical("Protocol decoder '%s' not found.", *pdtok);
 374                         return 1;
 375                 }
 376                 g_debug("cli: Showing protocol decoder meta output from '%s'.", *pdtok);
 377                 g_hash_table_insert(pd_meta_visible, g_strdup(*pdtok), NULL);
 378         }
 379         g_strfreev(pds);
 380
 381         return 0;
 382 }
 383
 384 int setup_pd_binary(char *opt_pd_binary)
 385 {
 386         GSList *l;
 387         struct srd_decoder *dec;
 388         int bin_class;
 389         char **pds, **pdtok, **keyval, **bin_name;
 390
 391         pd_binary_visible = g_hash_table_new_full(g_str_hash, g_int_equal,
 392                         g_free, NULL);
 393         pds = g_strsplit(opt_pd_binary, ",", 0);
 394         for (pdtok = pds; *pdtok && **pdtok; pdtok++) {
 395                 keyval = g_strsplit(*pdtok, "=", 0);
 396                 if (!(dec = srd_decoder_get_by_id(keyval[0]))) {
 397                         g_critical("Protocol decoder '%s' not found.", keyval[0]);
 398                         return 1;
 399                 }
 400                 if (!dec->binary) {
 401                         g_critical("Protocol decoder '%s' has no binary output.", keyval[0]);
 402                         return 1;
 403                 }
 404                 bin_class = 0;
 405                 if (g_strv_length(keyval) == 2) {
 406                         for (l = dec->binary; l; l = l->next, bin_class++) {
 407                                 bin_name = l->data;
 408                                 if (!strcmp(bin_name[0], keyval[1]))
 409                                         /* Found it. */
 410                                         break;
 411                         }
 412                         if (!l) {
 413                                 g_critical("binary output '%s' not found "
 414                                                 "for protocol decoder '%s'.", keyval[1], keyval[0]);
 415                                 return 1;
 416                         }
 417                         g_debug("cli: Showing protocol decoder %s binary class "
 418                                         "%d (%s).", keyval[0], bin_class, bin_name[0]);
 419                 } else {
 420                         /* No class specified: output all of them. */
 421                         bin_class = -1;
 422                         g_debug("cli: Showing all binary classes for protocol "
 423                                         "decoder %s.", keyval[0]);
 424                 }
 425                 g_hash_table_insert(pd_binary_visible, g_strdup(keyval[0]), GINT_TO_POINTER(bin_class));
 426                 g_strfreev(keyval);
 427         }
 428         g_strfreev(pds);
 429
 430         return 0;
 431 }
 432
 433 void show_pd_annotations(struct srd_proto_data *pdata, void *cb_data)
 434 {
 435         struct srd_decoder *dec;
 436         struct srd_proto_data_annotation *pda;
 437         gpointer ann_format;
 438         int format, i;
 439         char **ann_descr;
 440
 441         /* 'cb_data' is not used in this specific callback. */
 442         (void)cb_data;
 443
 444         if (!pd_ann_visible)
 445                 return;
 446
 447         if (!g_hash_table_lookup_extended(pd_ann_visible, pdata->pdo->di->inst_id,
 448                         NULL, &ann_format))
 449                 /* Not in the list of PDs whose annotations we're showing. */
 450                 return;
 451
 452         format = GPOINTER_TO_INT(ann_format);
 453         dec = pdata->pdo->di->decoder;
 454         pda = pdata->data;
 455         if (format != -1 && pda->ann_format != format)
 456                 /* We don't want this particular format from the PD. */
 457                 return;
 458
 459         if (opt_loglevel <= SR_LOG_WARN) {
 460                 /* Show only the longest annotation. */
 461                 printf("%s", pda->ann_text[0]);
 462         } else if (opt_loglevel >= SR_LOG_INFO) {
 463                 /* Sample numbers and quotes around the longest annotation. */
 464                 printf("%"PRIu64"-%"PRIu64"", pdata->start_sample, pdata->end_sample);
 465                 if (opt_loglevel == SR_LOG_INFO) {
 466                         printf(" \"%s\"", pda->ann_text[0]);
 467                 } else {
 468                         /* Protocol decoder id, annotation class,
 469                          * all annotation strings. */
 470                         ann_descr = g_slist_nth_data(dec->annotations, pda->ann_format);
 471                         printf(" %s: %s:", pdata->pdo->proto_id, ann_descr[0]);
 472                         for (i = 0; pda->ann_text[i]; i++)
 473                                 printf(" \"%s\"", pda->ann_text[i]);
 474                 }
 475         }
 476         printf("\n");
 477         fflush(stdout);
 478 }
 479
 480 void show_pd_meta(struct srd_proto_data *pdata, void *cb_data)
 481 {
 482
 483         /* 'cb_data' is not used in this specific callback. */
 484         (void)cb_data;
 485
 486         if (!g_hash_table_lookup_extended(pd_meta_visible,
 487                         pdata->pdo->di->decoder->id, NULL, NULL))
 488                 /* Not in the list of PDs whose meta output we're showing. */
 489                 return;
 490
 491         if (opt_loglevel > SR_LOG_WARN)
 492                 printf("%"PRIu64"-%"PRIu64" ", pdata->start_sample, pdata->end_sample);
 493         printf("%s: ", pdata->pdo->proto_id);
 494         printf("%s: %s", pdata->pdo->meta_name, g_variant_print(pdata->data, FALSE));
 495         printf("\n");
 496         fflush(stdout);
 497 }
 498
 499 void show_pd_binary(struct srd_proto_data *pdata, void *cb_data)
 500 {
 501         struct srd_proto_data_binary *pdb;
 502         gpointer classp;
 503         int class;
 504
 505         /* 'cb_data' is not used in this specific callback. */
 506         (void)cb_data;
 507
 508         if (!g_hash_table_lookup_extended(pd_binary_visible,
 509                         pdata->pdo->di->decoder->id, NULL, (void **)&classp))
 510                 /* Not in the list of PDs whose meta output we're showing. */
 511                 return;
 512
 513         class = GPOINTER_TO_INT(classp);
 514         pdb = pdata->data;
 515         if (class != -1 && class != pdb->bin_class)
 516                 /* Not showing this binary class. */
 517                 return;
 518
 519         /* Just send the binary output to stdout, no embellishments. */
 520         fwrite(pdb->data, pdb->size, 1, stdout);
 521         fflush(stdout);
 522 }
 523 #endif
 524