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 <stdlib.h>
  21 #include <string.h>
  22 #include "sigrok-cli.h"
  23 #include "config.h"
  24 #include <glib.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 /* 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                 if (!(dec = srd_decoder_get_by_id(pd_name))) {
 146                         g_critical("Failed to get decoder %s by id.", pd_name);
 147                         ret = 1;
 148                         break;
 149                 }
 150
 151                 /* Convert decoder option and channel values to GVariant. */
 152                 if (!opts_to_gvar(dec, pd_opthash, &options)) {
 153                         ret = 1;
 154                         break;
 155                 }
 156                 channels = extract_channel_map(dec, pd_opthash);
 157
 158                 if (g_hash_table_size(pd_opthash) > 0) {
 159                         leftover = g_hash_table_get_keys(pd_opthash);
 160                         for (l = leftover; l; l = l->next)
 161                                 g_critical("Unknown option or channel '%s'", (char *)l->data);
 162                         g_list_free(leftover);
 163                         break;
 164                 }
 165
 166                 if (!(di = srd_inst_new(srd_sess, pd_name, options))) {
 167                         g_critical("Failed to instantiate protocol decoder %s.", pd_name);
 168                         ret = 1;
 169                         break;
 170                 }
 171
 172                 if (pdtok == pdtokens) {
 173                         /*
 174                          * Save the channel setup for later, but only on the
 175                          * first decoder (stacked decoders don't get channels).
 176                          */
 177                         pd_channel_maps = g_hash_table_new_full(g_str_hash,
 178                                         g_str_equal, g_free, (GDestroyNotify)g_hash_table_destroy);
 179                         g_hash_table_insert(pd_channel_maps, g_strdup(di->inst_id), channels);
 180                         channels = NULL;
 181                 }
 182
 183                 /* If no annotation list was specified, add them all in now.
 184                  * This will be pared down later to leave only the last PD
 185                  * in the stack.
 186                  */
 187                 if (!opt_pd_annotations)
 188                         g_hash_table_insert(pd_ann_visible, g_strdup(di->inst_id),
 189                                         g_slist_append(NULL, GINT_TO_POINTER(-1)));
 190         }
 191
 192         g_strfreev(pdtokens);
 193         if (pd_opthash)
 194                 g_hash_table_destroy(pd_opthash);
 195         if (options)
 196                 g_hash_table_destroy(options);
 197         if (channels)
 198                 g_hash_table_destroy(channels);
 199         if (pd_name)
 200                 g_free(pd_name);
 201
 202         return ret;
 203 }
 204
 205 static void map_pd_inst_channels(void *key, void *value, void *user_data)
 206 {
 207         GHashTable *channel_map;
 208         GHashTable *channel_indices;
 209         GSList *channel_list;
 210         struct srd_decoder_inst *di;
 211         GVariant *var;
 212         void *channel_id;
 213         void *channel_target;
 214         struct sr_channel *ch;
 215         GHashTableIter iter;
 216         int num_channels;
 217
 218         channel_map = value;
 219         channel_list = user_data;
 220
 221         di = srd_inst_find_by_id(srd_sess, key);
 222         if (!di) {
 223                 g_critical("Protocol decoder instance \"%s\" not found.",
 224                            (char *)key);
 225                 return;
 226         }
 227         channel_indices = g_hash_table_new_full(g_str_hash, g_str_equal, g_free,
 228                                               (GDestroyNotify)g_variant_unref);
 229
 230         g_hash_table_iter_init(&iter, channel_map);
 231         while (g_hash_table_iter_next(&iter, &channel_id, &channel_target)) {
 232                 ch = find_channel(channel_list, channel_target);
 233                 if (!ch) {
 234                         g_printerr("cli: No channel with name \"%s\" found.\n",
 235                                    (char *)channel_target);
 236                         continue;
 237                 }
 238                 if (!ch->enabled)
 239                         g_printerr("cli: Target channel \"%s\" not enabled.\n",
 240                                    (char *)channel_target);
 241
 242                 var = g_variant_new_int32(ch->index);
 243                 g_variant_ref_sink(var);
 244                 g_hash_table_insert(channel_indices, g_strdup(channel_id), var);
 245         }
 246
 247         num_channels = g_slist_length(channel_list);
 248         srd_inst_channel_set_all(di, channel_indices, (num_channels + 7) / 8);
 249 }
 250
 251 void map_pd_channels(struct sr_dev_inst *sdi)
 252 {
 253         GSList *channels;
 254
 255         channels = sr_dev_inst_channels_get(sdi);
 256
 257         if (pd_channel_maps) {
 258                 g_hash_table_foreach(pd_channel_maps, &map_pd_inst_channels,
 259                                      channels);
 260                 g_hash_table_destroy(pd_channel_maps);
 261                 pd_channel_maps = NULL;
 262         }
 263 }
 264
 265 int setup_pd_stack(char *opt_pds, char *opt_pd_stack, char *opt_pd_annotations)
 266 {
 267         struct srd_decoder_inst *di_from, *di_to;
 268         int ret, i;
 269         char **pds, **ids;
 270
 271         /* Set up the protocol decoder stack. */
 272         pds = g_strsplit(opt_pds, ",", 0);
 273         if (g_strv_length(pds) > 1) {
 274                 if (opt_pd_stack) {
 275                         /* A stack setup was specified, use that. */
 276                         g_strfreev(pds);
 277                         pds = g_strsplit(opt_pd_stack, ",", 0);
 278                         if (g_strv_length(pds) < 2) {
 279                                 g_strfreev(pds);
 280                                 g_critical("Specify at least two protocol decoders to stack.");
 281                                 return 1;
 282                         }
 283                 }
 284
 285                 /* First PD goes at the bottom of the stack. */
 286                 ids = g_strsplit(pds[0], ":", 0);
 287                 if (!(di_from = srd_inst_find_by_id(srd_sess, ids[0]))) {
 288                         g_strfreev(ids);
 289                         g_critical("Cannot stack protocol decoder '%s': "
 290                                         "instance not found.", pds[0]);
 291                         return 1;
 292                 }
 293                 g_strfreev(ids);
 294
 295                 /* Every subsequent PD goes on top. */
 296                 for (i = 1; pds[i]; i++) {
 297                         ids = g_strsplit(pds[i], ":", 0);
 298                         if (!(di_to = srd_inst_find_by_id(srd_sess, ids[0]))) {
 299                                 g_strfreev(ids);
 300                                 g_critical("Cannot stack protocol decoder '%s': "
 301                                                 "instance not found.", pds[i]);
 302                                 return 1;
 303                         }
 304                         g_strfreev(ids);
 305                         if ((ret = srd_inst_stack(srd_sess, di_from, di_to)) != SRD_OK)
 306                                 return 1;
 307
 308                         /* Don't show annotation from this PD. Only the last PD in
 309                          * the stack will be left on the annotation list (unless
 310                          * the annotation list was specifically provided).
 311                          */
 312                         if (!opt_pd_annotations)
 313                                 g_hash_table_remove(pd_ann_visible, di_from->inst_id);
 314
 315                         di_from = di_to;
 316                 }
 317         }
 318         g_strfreev(pds);
 319
 320         return 0;
 321 }
 322
 323 int setup_pd_annotations(char *opt_pd_annotations)
 324 {
 325         GSList *l, *l_ann;
 326         struct srd_decoder *dec;
 327         int ann_class;
 328         char **pds, **pdtok, **keyval, **annlist, **ann, **ann_descr;
 329
 330         /* Set up custom list of PDs and annotations to show. */
 331         pds = g_strsplit(opt_pd_annotations, ",", 0);
 332         for (pdtok = pds; *pdtok && **pdtok; pdtok++) {
 333                 keyval = g_strsplit(*pdtok, "=", 0);
 334                 if (!(dec = srd_decoder_get_by_id(keyval[0]))) {
 335                         g_critical("Protocol decoder '%s' not found.", keyval[0]);
 336                         return 1;
 337                 }
 338                 if (!dec->annotations) {
 339                         g_critical("Protocol decoder '%s' has no annotations.", keyval[0]);
 340                         return 1;
 341                 }
 342                 if (g_strv_length(keyval) == 2 && keyval[1][0] != '\0') {
 343                         annlist = g_strsplit(keyval[1], ":", 0);
 344                         for (ann = annlist; *ann && **ann; ann++) {
 345                                 ann_class = 0;
 346                                 for (l = dec->annotations; l; l = l->next, ann_class++) {
 347                                         ann_descr = l->data;
 348                                         if (!canon_cmp(ann_descr[0], *ann))
 349                                                 /* Found it. */
 350                                                 break;
 351                                 }
 352                                 if (!l) {
 353                                         g_critical("Annotation '%s' not found "
 354                                                         "for protocol decoder '%s'.", *ann, keyval[0]);
 355                                         return 1;
 356                                 }
 357                                 l_ann = g_hash_table_lookup(pd_ann_visible, keyval[0]);
 358                                 l_ann = g_slist_append(l_ann, GINT_TO_POINTER(ann_class));
 359                                 g_hash_table_replace(pd_ann_visible, g_strdup(keyval[0]), l_ann);
 360                                 g_debug("cli: Showing protocol decoder %s annotation "
 361                                                 "class %d (%s).", keyval[0], ann_class, ann_descr[0]);
 362                         }
 363                 } else {
 364                         /* No class specified: show all of them. */
 365                                 g_hash_table_insert(pd_ann_visible, g_strdup(keyval[0]),
 366                                                 g_slist_append(NULL, GINT_TO_POINTER(-1)));
 367                         g_debug("cli: Showing all annotation classes for protocol "
 368                                         "decoder %s.", keyval[0]);
 369                 }
 370                 g_strfreev(keyval);
 371         }
 372         g_strfreev(pds);
 373
 374         return 0;
 375 }
 376
 377 int setup_pd_meta(char *opt_pd_meta)
 378 {
 379         struct srd_decoder *dec;
 380         char **pds, **pdtok;
 381
 382         pd_meta_visible = g_hash_table_new_full(g_str_hash, g_int_equal,
 383                         g_free, NULL);
 384         pds = g_strsplit(opt_pd_meta, ",", 0);
 385         for (pdtok = pds; *pdtok && **pdtok; pdtok++) {
 386                 if (!(dec = srd_decoder_get_by_id(*pdtok))) {
 387                         g_critical("Protocol decoder '%s' not found.", *pdtok);
 388                         return 1;
 389                 }
 390                 g_debug("cli: Showing protocol decoder meta output from '%s'.", *pdtok);
 391                 g_hash_table_insert(pd_meta_visible, g_strdup(*pdtok), NULL);
 392         }
 393         g_strfreev(pds);
 394
 395         return 0;
 396 }
 397
 398 int setup_pd_binary(char *opt_pd_binary)
 399 {
 400         GSList *l;
 401         struct srd_decoder *dec;
 402         int bin_class;
 403         char **pds, **pdtok, **keyval, **bin_name;
 404
 405         pd_binary_visible = g_hash_table_new_full(g_str_hash, g_int_equal,
 406                         g_free, NULL);
 407         pds = g_strsplit(opt_pd_binary, ",", 0);
 408         for (pdtok = pds; *pdtok && **pdtok; pdtok++) {
 409                 keyval = g_strsplit(*pdtok, "=", 0);
 410                 if (!(dec = srd_decoder_get_by_id(keyval[0]))) {
 411                         g_critical("Protocol decoder '%s' not found.", keyval[0]);
 412                         return 1;
 413                 }
 414                 if (!dec->binary) {
 415                         g_critical("Protocol decoder '%s' has no binary output.", keyval[0]);
 416                         return 1;
 417                 }
 418                 bin_class = 0;
 419                 if (g_strv_length(keyval) == 2) {
 420                         for (l = dec->binary; l; l = l->next, bin_class++) {
 421                                 bin_name = l->data;
 422                                 if (!strcmp(bin_name[0], keyval[1]))
 423                                         /* Found it. */
 424                                         break;
 425                         }
 426                         if (!l) {
 427                                 g_critical("binary output '%s' not found "
 428                                                 "for protocol decoder '%s'.", keyval[1], keyval[0]);
 429                                 return 1;
 430                         }
 431                         g_debug("cli: Showing protocol decoder %s binary class "
 432                                         "%d (%s).", keyval[0], bin_class, bin_name[0]);
 433                 } else {
 434                         /* No class specified: output all of them. */
 435                         bin_class = -1;
 436                         g_debug("cli: Showing all binary classes for protocol "
 437                                         "decoder %s.", keyval[0]);
 438                 }
 439                 g_hash_table_insert(pd_binary_visible, g_strdup(keyval[0]), GINT_TO_POINTER(bin_class));
 440                 g_strfreev(keyval);
 441         }
 442         g_strfreev(pds);
 443
 444         return 0;
 445 }
 446
 447 void show_pd_annotations(struct srd_proto_data *pdata, void *cb_data)
 448 {
 449         struct srd_decoder *dec;
 450         struct srd_proto_data_annotation *pda;
 451         GSList *ann_list, *l;
 452         int i;
 453         char **ann_descr;
 454         gboolean show;
 455
 456         /* 'cb_data' is not used in this specific callback. */
 457         (void)cb_data;
 458
 459         if (!pd_ann_visible)
 460                 return;
 461
 462         if (!g_hash_table_lookup_extended(pd_ann_visible, pdata->pdo->di->inst_id,
 463                         NULL, (void **)&ann_list))
 464                 /* Not in the list of PDs whose annotations we're showing. */
 465                 return;
 466
 467         dec = pdata->pdo->di->decoder;
 468         pda = pdata->data;
 469         show = FALSE;
 470         for (l = ann_list; l; l = l->next) {
 471                 if (GPOINTER_TO_INT(l->data) == -1
 472                                 || GPOINTER_TO_INT(l->data) == pda->ann_class) {
 473                         show = TRUE;
 474                         break;
 475                 }
 476         }
 477         if (!show)
 478                 return;
 479
 480         if (opt_loglevel <= SR_LOG_WARN) {
 481                 /* Show only the longest annotation. */
 482                 printf("%s", pda->ann_text[0]);
 483         } else if (opt_loglevel >= SR_LOG_INFO) {
 484                 /* Sample numbers and quotes around the longest annotation. */
 485                 printf("%"PRIu64"-%"PRIu64"", pdata->start_sample, pdata->end_sample);
 486                 if (opt_loglevel == SR_LOG_INFO) {
 487                         printf(" \"%s\"", pda->ann_text[0]);
 488                 } else {
 489                         /* Protocol decoder id, annotation class,
 490                          * all annotation strings. */
 491                         ann_descr = g_slist_nth_data(dec->annotations, pda->ann_class);
 492                         printf(" %s: %s:", pdata->pdo->proto_id, ann_descr[0]);
 493                         for (i = 0; pda->ann_text[i]; i++)
 494                                 printf(" \"%s\"", pda->ann_text[i]);
 495                 }
 496         }
 497         printf("\n");
 498         fflush(stdout);
 499 }
 500
 501 void show_pd_meta(struct srd_proto_data *pdata, void *cb_data)
 502 {
 503
 504         /* 'cb_data' is not used in this specific callback. */
 505         (void)cb_data;
 506
 507         if (!g_hash_table_lookup_extended(pd_meta_visible,
 508                         pdata->pdo->di->decoder->id, NULL, NULL))
 509                 /* Not in the list of PDs whose meta output we're showing. */
 510                 return;
 511
 512         if (opt_loglevel > SR_LOG_WARN)
 513                 printf("%"PRIu64"-%"PRIu64" ", pdata->start_sample, pdata->end_sample);
 514         printf("%s: ", pdata->pdo->proto_id);
 515         printf("%s: %s", pdata->pdo->meta_name, g_variant_print(pdata->data, FALSE));
 516         printf("\n");
 517         fflush(stdout);
 518 }
 519
 520 void show_pd_binary(struct srd_proto_data *pdata, void *cb_data)
 521 {
 522         struct srd_proto_data_binary *pdb;
 523         gpointer classp;
 524         int class;
 525
 526         /* 'cb_data' is not used in this specific callback. */
 527         (void)cb_data;
 528
 529         if (!g_hash_table_lookup_extended(pd_binary_visible,
 530                         pdata->pdo->di->decoder->id, NULL, (void **)&classp))
 531                 /* Not in the list of PDs whose meta output we're showing. */
 532                 return;
 533
 534         class = GPOINTER_TO_INT(classp);
 535         pdb = pdata->data;
 536         if (class != -1 && class != pdb->bin_class)
 537                 /* Not showing this binary class. */
 538                 return;
 539
 540         /* Just send the binary output to stdout, no embellishments. */
 541         fwrite(pdb->data, pdb->size, 1, stdout);
 542         fflush(stdout);
 543 }
 544 #endif
 545