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 <glib.h>
  23 #include "sigrok-cli.h"
  24 #include "config.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 /*
 113  * Register the given PDs for this session.
 114  * Accepts a string of the form: "spi:sck=3:sdata=4,spi:sck=3:sdata=5"
 115  * That will instantiate two SPI decoders on the clock but different data
 116  * lines.
 117  */
 118 int register_pds(const char *opt_pds, char *opt_pd_annotations)
 119 {
 120         struct srd_decoder *dec;
 121         GHashTable *pd_opthash, *options, *channels;
 122         GList *leftover, *l;
 123         struct srd_decoder_inst *di;
 124         int ret;
 125         char **pdtokens, **pdtok, *pd_name;
 126
 127         pd_ann_visible = g_hash_table_new_full(g_str_hash, g_str_equal,
 128                                                g_free, NULL);
 129         ret = 0;
 130         pd_name = NULL;
 131         pd_opthash = options = channels = pd_channel_maps = NULL;
 132         pdtokens = g_strsplit(opt_pds, ",", 0);
 133         for (pdtok = pdtokens; *pdtok; pdtok++) {
 134                 if (!(pd_opthash = parse_generic_arg(*pdtok, TRUE))) {
 135                         g_critical("Invalid protocol decoder option '%s'.", *pdtok);
 136                         break;
 137                 }
 138
 139                 pd_name = g_strdup(g_hash_table_lookup(pd_opthash, "sigrok_key"));
 140                 g_hash_table_remove(pd_opthash, "sigrok_key");
 141                 if (srd_decoder_load(pd_name) != SRD_OK) {
 142                         g_critical("Failed to load protocol decoder %s.", pd_name);
 143                         ret = 1;
 144                         break;
 145                 }
 146                 if (!(dec = srd_decoder_get_by_id(pd_name))) {
 147                         g_critical("Failed to get decoder %s by id.", pd_name);
 148                         ret = 1;
 149                         break;
 150                 }
 151
 152                 /* Convert decoder option and channel values to GVariant. */
 153                 if (!opts_to_gvar(dec, pd_opthash, &options)) {
 154                         ret = 1;
 155                         break;
 156                 }
 157                 channels = extract_channel_map(dec, pd_opthash);
 158
 159                 if (g_hash_table_size(pd_opthash) > 0) {
 160                         leftover = g_hash_table_get_keys(pd_opthash);
 161                         for (l = leftover; l; l = l->next)
 162                                 g_critical("Unknown option or channel '%s'", (char *)l->data);
 163                         g_list_free(leftover);
 164                         break;
 165                 }
 166
 167                 if (!(di = srd_inst_new(srd_sess, pd_name, options))) {
 168                         g_critical("Failed to instantiate protocol decoder %s.", pd_name);
 169                         ret = 1;
 170                         break;
 171                 }
 172
 173                 if (pdtok == pdtokens) {
 174                         /*
 175                          * Save the channel setup for later, but only on the
 176                          * first decoder (stacked decoders don't get channels).
 177                          */
 178                         pd_channel_maps = g_hash_table_new_full(g_str_hash,
 179                                         g_str_equal, g_free, (GDestroyNotify)g_hash_table_destroy);
 180                         g_hash_table_insert(pd_channel_maps, g_strdup(di->inst_id), channels);
 181                         channels = NULL;
 182                 }
 183
 184                 /*
 185                  * If no annotation list was specified, add them all in now.
 186                  * This will be pared down later to leave only the last PD
 187                  * in the stack.
 188                  */
 189                 if (!opt_pd_annotations)
 190                         g_hash_table_insert(pd_ann_visible, g_strdup(di->inst_id),
 191                                         g_slist_append(NULL, GINT_TO_POINTER(-1)));
 192         }
 193
 194         g_strfreev(pdtokens);
 195         if (pd_opthash)
 196                 g_hash_table_destroy(pd_opthash);
 197         if (options)
 198                 g_hash_table_destroy(options);
 199         if (channels)
 200                 g_hash_table_destroy(channels);
 201         g_free(pd_name);
 202
 203         return ret;
 204 }
 205
 206 static void map_pd_inst_channels(void *key, void *value, void *user_data)
 207 {
 208         GHashTable *channel_map;
 209         GHashTable *channel_indices;
 210         GSList *channel_list;
 211         struct srd_decoder_inst *di;
 212         GVariant *var;
 213         void *channel_id;
 214         void *channel_target;
 215         struct sr_channel *ch;
 216         GHashTableIter iter;
 217         int num_channels;
 218
 219         channel_map = value;
 220         channel_list = user_data;
 221
 222         di = srd_inst_find_by_id(srd_sess, key);
 223         if (!di) {
 224                 g_critical("Protocol decoder instance \"%s\" not found.",
 225                            (char *)key);
 226                 return;
 227         }
 228         channel_indices = g_hash_table_new_full(g_str_hash, g_str_equal, g_free,
 229                                               (GDestroyNotify)g_variant_unref);
 230
 231         g_hash_table_iter_init(&iter, channel_map);
 232         while (g_hash_table_iter_next(&iter, &channel_id, &channel_target)) {
 233                 ch = find_channel(channel_list, channel_target);
 234                 if (!ch) {
 235                         g_printerr("cli: No channel with name \"%s\" found.\n",
 236                                    (char *)channel_target);
 237                         continue;
 238                 }
 239                 if (!ch->enabled)
 240                         g_printerr("cli: Target channel \"%s\" not enabled.\n",
 241                                    (char *)channel_target);
 242
 243                 var = g_variant_new_int32(ch->index);
 244                 g_variant_ref_sink(var);
 245                 g_hash_table_insert(channel_indices, g_strdup(channel_id), var);
 246         }
 247
 248         num_channels = g_slist_length(channel_list);
 249         srd_inst_channel_set_all(di, channel_indices, (num_channels + 7) / 8);
 250 }
 251
 252 void map_pd_channels(struct sr_dev_inst *sdi)
 253 {
 254         GSList *channels;
 255
 256         channels = sr_dev_inst_channels_get(sdi);
 257
 258         if (pd_channel_maps) {
 259                 g_hash_table_foreach(pd_channel_maps, &map_pd_inst_channels,
 260                                      channels);
 261                 g_hash_table_destroy(pd_channel_maps);
 262                 pd_channel_maps = NULL;
 263         }
 264 }
 265
 266 int setup_pd_stack(char *opt_pds, char *opt_pd_stack, char *opt_pd_annotations)
 267 {
 268         struct srd_decoder_inst *di_from, *di_to;
 269         int ret, i;
 270         char **pds, **ids;
 271
 272         /* Set up the protocol decoder stack. */
 273         pds = g_strsplit(opt_pds, ",", 0);
 274         if (g_strv_length(pds) > 1) {
 275                 if (opt_pd_stack) {
 276                         /* A stack setup was specified, use that. */
 277                         g_strfreev(pds);
 278                         pds = g_strsplit(opt_pd_stack, ",", 0);
 279                         if (g_strv_length(pds) < 2) {
 280                                 g_strfreev(pds);
 281                                 g_critical("Specify at least two protocol decoders to stack.");
 282                                 return 1;
 283                         }
 284                 }
 285
 286                 /* First PD goes at the bottom of the stack. */
 287                 ids = g_strsplit(pds[0], ":", 0);
 288                 if (!(di_from = srd_inst_find_by_id(srd_sess, ids[0]))) {
 289                         g_strfreev(ids);
 290                         g_critical("Cannot stack protocol decoder '%s': "
 291                                         "instance not found.", pds[0]);
 292                         return 1;
 293                 }
 294                 g_strfreev(ids);
 295
 296                 /* Every subsequent PD goes on top. */
 297                 for (i = 1; pds[i]; i++) {
 298                         ids = g_strsplit(pds[i], ":", 0);
 299                         if (!(di_to = srd_inst_find_by_id(srd_sess, ids[0]))) {
 300                                 g_strfreev(ids);
 301                                 g_critical("Cannot stack protocol decoder '%s': "
 302                                                 "instance not found.", pds[i]);
 303                                 return 1;
 304                         }
 305                         g_strfreev(ids);
 306                         if ((ret = srd_inst_stack(srd_sess, di_from, di_to)) != SRD_OK)
 307                                 return 1;
 308
 309                         /*
 310                          * Don't show annotation from this PD. Only the last PD in
 311                          * the stack will be left on the annotation list (unless
 312                          * the annotation list was specifically provided).
 313                          */
 314                         if (!opt_pd_annotations)
 315                                 g_hash_table_remove(pd_ann_visible, di_from->inst_id);
 316
 317                         di_from = di_to;
 318                 }
 319         }
 320         g_strfreev(pds);
 321
 322         return 0;
 323 }
 324
 325 int setup_pd_annotations(char *opt_pd_annotations)
 326 {
 327         GSList *l, *l_ann;
 328         struct srd_decoder *dec;
 329         int ann_class;
 330         char **pds, **pdtok, **keyval, **annlist, **ann, **ann_descr;
 331
 332         /* Set up custom list of PDs and annotations to show. */
 333         pds = g_strsplit(opt_pd_annotations, ",", 0);
 334         for (pdtok = pds; *pdtok && **pdtok; pdtok++) {
 335                 keyval = g_strsplit(*pdtok, "=", 0);
 336                 if (!(dec = srd_decoder_get_by_id(keyval[0]))) {
 337                         g_critical("Protocol decoder '%s' not found.", keyval[0]);
 338                         return 1;
 339                 }
 340                 if (!dec->annotations) {
 341                         g_critical("Protocol decoder '%s' has no annotations.", keyval[0]);
 342                         return 1;
 343                 }
 344                 if (g_strv_length(keyval) == 2 && keyval[1][0] != '\0') {
 345                         annlist = g_strsplit(keyval[1], ":", 0);
 346                         for (ann = annlist; *ann && **ann; ann++) {
 347                                 ann_class = 0;
 348                                 for (l = dec->annotations; l; l = l->next, ann_class++) {
 349                                         ann_descr = l->data;
 350                                         if (!canon_cmp(ann_descr[0], *ann))
 351                                                 /* Found it. */
 352                                                 break;
 353                                 }
 354                                 if (!l) {
 355                                         g_critical("Annotation '%s' not found "
 356                                                         "for protocol decoder '%s'.", *ann, keyval[0]);
 357                                         return 1;
 358                                 }
 359                                 l_ann = g_hash_table_lookup(pd_ann_visible, keyval[0]);
 360                                 l_ann = g_slist_append(l_ann, GINT_TO_POINTER(ann_class));
 361                                 g_hash_table_replace(pd_ann_visible, g_strdup(keyval[0]), l_ann);
 362                                 g_debug("cli: Showing protocol decoder %s annotation "
 363                                                 "class %d (%s).", keyval[0], ann_class, ann_descr[0]);
 364                         }
 365                 } else {
 366                         /* No class specified: show all of them. */
 367                                 g_hash_table_insert(pd_ann_visible, g_strdup(keyval[0]),
 368                                                 g_slist_append(NULL, GINT_TO_POINTER(-1)));
 369                         g_debug("cli: Showing all annotation classes for protocol "
 370                                         "decoder %s.", keyval[0]);
 371                 }
 372                 g_strfreev(keyval);
 373         }
 374         g_strfreev(pds);
 375
 376         return 0;
 377 }
 378
 379 int setup_pd_meta(char *opt_pd_meta)
 380 {
 381         struct srd_decoder *dec;
 382         char **pds, **pdtok;
 383
 384         pd_meta_visible = g_hash_table_new_full(g_str_hash, g_int_equal,
 385                         g_free, NULL);
 386         pds = g_strsplit(opt_pd_meta, ",", 0);
 387         for (pdtok = pds; *pdtok && **pdtok; pdtok++) {
 388                 if (!(dec = srd_decoder_get_by_id(*pdtok))) {
 389                         g_critical("Protocol decoder '%s' not found.", *pdtok);
 390                         return 1;
 391                 }
 392                 g_debug("cli: Showing protocol decoder meta output from '%s'.", *pdtok);
 393                 g_hash_table_insert(pd_meta_visible, g_strdup(*pdtok), NULL);
 394         }
 395         g_strfreev(pds);
 396
 397         return 0;
 398 }
 399
 400 int setup_pd_binary(char *opt_pd_binary)
 401 {
 402         GSList *l;
 403         struct srd_decoder *dec;
 404         int bin_class;
 405         char **pds, **pdtok, **keyval, **bin_name;
 406
 407         pd_binary_visible = g_hash_table_new_full(g_str_hash, g_int_equal,
 408                         g_free, NULL);
 409         pds = g_strsplit(opt_pd_binary, ",", 0);
 410         for (pdtok = pds; *pdtok && **pdtok; pdtok++) {
 411                 keyval = g_strsplit(*pdtok, "=", 0);
 412                 if (!(dec = srd_decoder_get_by_id(keyval[0]))) {
 413                         g_critical("Protocol decoder '%s' not found.", keyval[0]);
 414                         return 1;
 415                 }
 416                 if (!dec->binary) {
 417                         g_critical("Protocol decoder '%s' has no binary output.", keyval[0]);
 418                         return 1;
 419                 }
 420                 bin_class = 0;
 421                 if (g_strv_length(keyval) == 2) {
 422                         for (l = dec->binary; l; l = l->next, bin_class++) {
 423                                 bin_name = l->data;
 424                                 if (!strcmp(bin_name[0], keyval[1]))
 425                                         /* Found it. */
 426                                         break;
 427                         }
 428                         if (!l) {
 429                                 g_critical("binary output '%s' not found "
 430                                                 "for protocol decoder '%s'.", keyval[1], keyval[0]);
 431                                 return 1;
 432                         }
 433                         g_debug("cli: Showing protocol decoder %s binary class "
 434                                         "%d (%s).", keyval[0], bin_class, bin_name[0]);
 435                 } else {
 436                         /* No class specified: output all of them. */
 437                         bin_class = -1;
 438                         g_debug("cli: Showing all binary classes for protocol "
 439                                         "decoder %s.", keyval[0]);
 440                 }
 441                 g_hash_table_insert(pd_binary_visible, g_strdup(keyval[0]), GINT_TO_POINTER(bin_class));
 442                 g_strfreev(keyval);
 443         }
 444         g_strfreev(pds);
 445
 446         return 0;
 447 }
 448
 449 void show_pd_annotations(struct srd_proto_data *pdata, void *cb_data)
 450 {
 451         struct srd_decoder *dec;
 452         struct srd_proto_data_annotation *pda;
 453         GSList *ann_list, *l;
 454         int i;
 455         char **ann_descr;
 456         gboolean show;
 457
 458         (void)cb_data;
 459
 460         if (!pd_ann_visible)
 461                 return;
 462
 463         if (!g_hash_table_lookup_extended(pd_ann_visible, pdata->pdo->di->inst_id,
 464                         NULL, (void **)&ann_list))
 465                 /* Not in the list of PDs whose annotations we're showing. */
 466                 return;
 467
 468         dec = pdata->pdo->di->decoder;
 469         pda = pdata->data;
 470         show = FALSE;
 471         for (l = ann_list; l; l = l->next) {
 472                 if (GPOINTER_TO_INT(l->data) == -1
 473                                 || GPOINTER_TO_INT(l->data) == pda->ann_class) {
 474                         show = TRUE;
 475                         break;
 476                 }
 477         }
 478         if (!show)
 479                 return;
 480
 481         if (opt_loglevel <= SR_LOG_WARN) {
 482                 /* Show only the longest annotation. */
 483                 printf("%s", pda->ann_text[0]);
 484         } else if (opt_loglevel >= SR_LOG_INFO) {
 485                 /* Sample numbers and quotes around the longest annotation. */
 486                 printf("%"PRIu64"-%"PRIu64"", pdata->start_sample, pdata->end_sample);
 487                 if (opt_loglevel == SR_LOG_INFO) {
 488                         printf(" \"%s\"", pda->ann_text[0]);
 489                 } else {
 490                         /* Protocol decoder id, annotation class,
 491                          * all annotation strings. */
 492                         ann_descr = g_slist_nth_data(dec->annotations, pda->ann_class);
 493                         printf(" %s: %s:", pdata->pdo->proto_id, ann_descr[0]);
 494                         for (i = 0; pda->ann_text[i]; i++)
 495                                 printf(" \"%s\"", pda->ann_text[i]);
 496                 }
 497         }
 498         printf("\n");
 499         fflush(stdout);
 500 }
 501
 502 void show_pd_meta(struct srd_proto_data *pdata, void *cb_data)
 503 {
 504         (void)cb_data;
 505
 506         if (!g_hash_table_lookup_extended(pd_meta_visible,
 507                         pdata->pdo->di->decoder->id, NULL, NULL))
 508                 /* Not in the list of PDs whose meta output we're showing. */
 509                 return;
 510
 511         if (opt_loglevel > SR_LOG_WARN)
 512                 printf("%"PRIu64"-%"PRIu64" ", pdata->start_sample, pdata->end_sample);
 513         printf("%s: ", pdata->pdo->proto_id);
 514         printf("%s: %s", pdata->pdo->meta_name, g_variant_print(pdata->data, FALSE));
 515         printf("\n");
 516         fflush(stdout);
 517 }
 518
 519 void show_pd_binary(struct srd_proto_data *pdata, void *cb_data)
 520 {
 521         struct srd_proto_data_binary *pdb;
 522         gpointer classp;
 523         int class;
 524
 525         (void)cb_data;
 526
 527         if (!g_hash_table_lookup_extended(pd_binary_visible,
 528                         pdata->pdo->di->decoder->id, NULL, (void **)&classp))
 529                 /* Not in the list of PDs whose meta output we're showing. */
 530                 return;
 531
 532         class = GPOINTER_TO_INT(classp);
 533         pdb = pdata->data;
 534         if (class != -1 && class != pdb->bin_class)
 535                 /* Not showing this binary class. */
 536                 return;
 537
 538         /* Just send the binary output to stdout, no embellishments. */
 539         fwrite(pdb->data, pdb->size, 1, stdout);
 540         fflush(stdout);
 541 }
 542 #endif