decode.c

   1 /*
   2  * This file is part of the sigrok-cli project.
   3  *
   4  * Copyright (C) 2013 Bert Vermeulen <bert@biot.com>
   5  *
   6  * This program is free software: you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation, either version 3 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include <config.h>
  21 #include <stdlib.h>
  22 #include <string.h>
  23 #include <glib.h>
  24 #include "sigrok-cli.h"
  25
  26 #ifdef HAVE_SRD
  27 static GHashTable *pd_ann_visible = NULL;
  28 static GHashTable *pd_meta_visible = NULL;
  29 static GHashTable *pd_binary_visible = NULL;
  30 static GHashTable *pd_channel_maps = NULL;
  31
  32 uint64_t pd_samplerate = 0;
  33
  34 extern struct srd_session *srd_sess;
  35
  36 static int opts_to_gvar(struct srd_decoder *dec, GHashTable *hash,
  37                 GHashTable **options)
  38 {
  39         struct srd_decoder_option *o;
  40         GSList *optl;
  41         GVariant *gvar;
  42         gint64 val_int;
  43         double val_dbl;
  44         int ret;
  45         char *val_str, *conv;
  46
  47         ret = TRUE;
  48         *options = g_hash_table_new_full(g_str_hash, g_str_equal, g_free,
  49                         (GDestroyNotify)g_variant_unref);
  50
  51         for (optl = dec->options; optl; optl = optl->next) {
  52                 o = optl->data;
  53                 if (!(val_str = g_hash_table_lookup(hash, o->id)))
  54                         /* Not specified. */
  55                         continue;
  56                 if (g_variant_is_of_type(o->def, G_VARIANT_TYPE_STRING)) {
  57                         gvar = g_variant_new_string(val_str);
  58                 } else if (g_variant_is_of_type(o->def, G_VARIANT_TYPE_INT64)) {
  59                         conv = NULL;
  60                         val_int = strtoll(val_str, &conv, 0);
  61                         if (!conv || conv == val_str || *conv) {
  62                                 g_critical("Protocol decoder '%s' option '%s' "
  63                                                 "requires a number.", dec->name, o->id);
  64                                 ret = FALSE;
  65                                 break;
  66                         }
  67                         gvar = g_variant_new_int64(val_int);
  68                 } else if (g_variant_is_of_type(o->def, G_VARIANT_TYPE_DOUBLE)) {
  69                         conv = NULL;
  70                         val_dbl = strtod(val_str, &conv);
  71                         if (!conv || conv == val_str || *conv) {
  72                                 g_critical("Protocol decoder '%s' option '%s' requires a float number.",
  73                                         dec->name, o->id);
  74                                 ret = FALSE;
  75                                 break;
  76                         }
  77                         gvar = g_variant_new_double(val_dbl);
  78                 } else {
  79                         g_critical("Unsupported type for option '%s' (%s)",
  80                                         o->id, g_variant_get_type_string(o->def));
  81                         ret = FALSE;
  82                         break;
  83                 }
  84                 g_variant_ref_sink(gvar);
  85                 g_hash_table_insert(*options, g_strdup(o->id), gvar);
  86                 g_hash_table_remove(hash, o->id);
  87         }
  88
  89         return ret;
  90 }
  91
  92 static int move_hash_element(GHashTable *src, GHashTable *dest, void *key)
  93 {
  94         void *orig_key, *value;
  95
  96         if (!g_hash_table_lookup_extended(src, key, &orig_key, &value))
  97                 /* Not specified. */
  98                 return FALSE;
  99         g_hash_table_steal(src, orig_key);
 100         g_hash_table_insert(dest, orig_key, value);
 101
 102         return TRUE;
 103 }
 104
 105 static GHashTable *extract_channel_map(struct srd_decoder *dec, GHashTable *hash)
 106 {
 107         GHashTable *channel_map;
 108         struct srd_channel *pdch;
 109         GSList *l;
 110
 111         channel_map = g_hash_table_new_full(g_str_hash, g_str_equal,
 112                                           g_free, g_free);
 113
 114         for (l = dec->channels; l; l = l->next) {
 115                 pdch = l->data;
 116                 move_hash_element(hash, channel_map, pdch->id);
 117         }
 118         for (l = dec->opt_channels; l; l = l->next) {
 119                 pdch = l->data;
 120                 move_hash_element(hash, channel_map, pdch->id);
 121         }
 122
 123         return channel_map;
 124 }
 125
 126 static int register_pd(char *opt_pds, char *opt_pd_annotations)
 127 {
 128         int ret;
 129         struct srd_decoder *dec;
 130         struct srd_decoder_inst *di, *di_prior;
 131         char **pdtokens, **pdtok, *pd_name;
 132         GHashTable *pd_opthash, *options, *channels;
 133         GList *leftover, *l;
 134
 135         ret = 0;
 136         pd_name = NULL;
 137         di_prior = NULL;
 138         pd_opthash = options = channels = NULL;
 139
 140         pdtokens = g_strsplit(opt_pds, ",", 0);
 141         for (pdtok = pdtokens; *pdtok; pdtok++) {
 142                 if (!(pd_opthash = parse_generic_arg(*pdtok, TRUE))) {
 143                         g_critical("Invalid protocol decoder option '%s'.", *pdtok);
 144                         break;
 145                 }
 146
 147                 pd_name = g_strdup(g_hash_table_lookup(pd_opthash, "sigrok_key"));
 148                 g_hash_table_remove(pd_opthash, "sigrok_key");
 149                 if (srd_decoder_load(pd_name) != SRD_OK) {
 150                         g_critical("Failed to load protocol decoder %s.", pd_name);
 151                         ret = 1;
 152                         break;
 153                 }
 154                 if (!(dec = srd_decoder_get_by_id(pd_name))) {
 155                         g_critical("Failed to get decoder %s by id.", pd_name);
 156                         ret = 1;
 157                         break;
 158                 }
 159
 160                 /* Convert decoder option and channel values to GVariant. */
 161                 if (!opts_to_gvar(dec, pd_opthash, &options)) {
 162                         ret = 1;
 163                         break;
 164                 }
 165                 channels = extract_channel_map(dec, pd_opthash);
 166
 167                 if (g_hash_table_size(pd_opthash) > 0) {
 168                         leftover = g_hash_table_get_keys(pd_opthash);
 169                         for (l = leftover; l; l = l->next)
 170                                 g_critical("Unknown option or channel '%s'", (char *)l->data);
 171                         g_list_free(leftover);
 172                         break;
 173                 }
 174
 175                 if (!(di = srd_inst_new(srd_sess, pd_name, options))) {
 176                         g_critical("Failed to instantiate protocol decoder %s.", pd_name);
 177                         ret = 1;
 178                         break;
 179                 }
 180
 181                 if (pdtok == pdtokens) {
 182                         /*
 183                          * Save the channel setup for later, but only on the
 184                          * first decoder (stacked decoders don't get channels).
 185                          */
 186                         g_hash_table_insert(pd_channel_maps, g_strdup(di->inst_id), channels);
 187                         channels = NULL;
 188                 }
 189
 190                 /*
 191                  * If no annotation list was specified, add them all in now.
 192                  * This will be pared down later to leave only the last PD
 193                  * in the stack.
 194                  */
 195                 if (!opt_pd_annotations) {
 196                         g_hash_table_insert(pd_ann_visible, g_strdup(di->decoder->id),
 197                                         g_slist_append(NULL, GINT_TO_POINTER(-1)));
 198                 }
 199                 if (di_prior) {
 200                         if (srd_inst_stack(srd_sess, di_prior, di) != SRD_OK) {
 201                                 g_critical("Failed to stack %s -> %s.",
 202                                         di_prior->inst_id, di->inst_id);
 203                                 ret = 1;
 204                                 break;
 205                         }
 206                         /* Remove annotations from prior levels. */
 207                         if (!opt_pd_annotations)
 208                                 g_hash_table_remove(pd_ann_visible, di_prior->inst_id);
 209                 }
 210                 di_prior = di;
 211                 g_free(pd_name);
 212                 g_hash_table_destroy(pd_opthash);
 213                 g_hash_table_destroy(options);
 214                 pd_opthash = options = NULL;
 215         }
 216
 217         if (pd_opthash)
 218                 g_hash_table_destroy(pd_opthash);
 219         if (options)
 220                 g_hash_table_destroy(options);
 221         if (channels)
 222                 g_hash_table_destroy(channels);
 223
 224         g_strfreev(pdtokens);
 225
 226         return ret;
 227 }
 228
 229 /*
 230  * Register all the PDs from all stacks.
 231  *
 232  * Each PD string is a single stack such as "uart:baudrate=19200,modbus".
 233  */
 234 int register_pds(gchar **all_pds, char *opt_pd_annotations)
 235 {
 236         int ret;
 237
 238         ret = 0;
 239         pd_ann_visible = g_hash_table_new_full(g_str_hash, g_str_equal,
 240                                                g_free, NULL);
 241         pd_channel_maps = g_hash_table_new_full(g_str_hash,
 242                 g_str_equal, g_free, (GDestroyNotify)g_hash_table_destroy);
 243
 244         for (int i = 0; all_pds[i]; i++)
 245                 ret += register_pd(all_pds[i], opt_pd_annotations);
 246
 247         return ret;
 248 }
 249
 250 static void map_pd_inst_channels(void *key, void *value, void *user_data)
 251 {
 252         GHashTable *channel_map;
 253         GHashTable *channel_indices;
 254         GSList *channel_list;
 255         struct srd_decoder_inst *di;
 256         GVariant *var;
 257         void *channel_id;
 258         void *channel_target;
 259         struct sr_channel *ch;
 260         GHashTableIter iter;
 261
 262         channel_map = value;
 263         channel_list = user_data;
 264
 265         di = srd_inst_find_by_id(srd_sess, key);
 266         if (!di) {
 267                 g_critical("Protocol decoder instance \"%s\" not found.",
 268                            (char *)key);
 269                 return;
 270         }
 271         channel_indices = g_hash_table_new_full(g_str_hash, g_str_equal, g_free,
 272                                               (GDestroyNotify)g_variant_unref);
 273
 274         g_hash_table_iter_init(&iter, channel_map);
 275         while (g_hash_table_iter_next(&iter, &channel_id, &channel_target)) {
 276                 if (!channel_target) {
 277                         g_printerr("cli: Channel name for \"%s\" missing.\n",
 278                                    (char *)channel_id);
 279                         continue;
 280                 }
 281                 ch = find_channel(channel_list, channel_target);
 282                 if (!ch) {
 283                         g_printerr("cli: No channel with name \"%s\" found.\n",
 284                                    (char *)channel_target);
 285                         continue;
 286                 }
 287                 if (!ch->enabled)
 288                         g_printerr("cli: Target channel \"%s\" not enabled.\n",
 289                                    (char *)channel_target);
 290
 291                 var = g_variant_new_int32(ch->index);
 292                 g_variant_ref_sink(var);
 293                 g_hash_table_insert(channel_indices, g_strdup(channel_id), var);
 294         }
 295
 296         srd_inst_channel_set_all(di, channel_indices);
 297         g_hash_table_destroy(channel_indices);
 298 }
 299
 300 void map_pd_channels(struct sr_dev_inst *sdi)
 301 {
 302         GSList *channels;
 303
 304         channels = sr_dev_inst_channels_get(sdi);
 305
 306         if (pd_channel_maps) {
 307                 g_hash_table_foreach(pd_channel_maps, &map_pd_inst_channels,
 308                                      channels);
 309                 g_hash_table_destroy(pd_channel_maps);
 310                 pd_channel_maps = NULL;
 311         }
 312 }
 313
 314 int setup_pd_annotations(char *opt_pd_annotations)
 315 {
 316         GSList *l, *l_ann;
 317         struct srd_decoder *dec;
 318         int ann_class;
 319         char **pds, **pdtok, **keyval, **annlist, **ann, **ann_descr;
 320         const char *dec_id;
 321         const char *ann_txt;
 322         const char *ann_id;
 323         const struct srd_decoder_annotation_row *row_desc;
 324         char **ann_diag;
 325
 326         /* Set up custom list of PDs and annotations to show. */
 327         pds = g_strsplit(opt_pd_annotations, ",", 0);
 328         for (pdtok = pds; *pdtok && **pdtok; pdtok++) {
 329                 keyval = g_strsplit(*pdtok, "=", 0);
 330                 dec_id = keyval[0];
 331                 if (!(dec = srd_decoder_get_by_id(dec_id))) {
 332                         g_critical("Protocol decoder '%s' not found.", dec_id);
 333                         g_strfreev(keyval);
 334                         g_strfreev(pds);
 335                         return 1;
 336                 }
 337                 if (!dec->annotations) {
 338                         g_critical("Protocol decoder '%s' has no annotations.", dec_id);
 339                         g_strfreev(keyval);
 340                         g_strfreev(pds);
 341                         return 1;
 342                 }
 343                 ann_txt = (g_strv_length(keyval) == 2) ? keyval[1] : NULL;
 344                 if (ann_txt && *ann_txt) {
 345                         annlist = g_strsplit(ann_txt, ":", 0);
 346                         for (ann = annlist; *ann && **ann; ann++) {
 347                                 ann_id = *ann;
 348                                 g_debug("cli: Lookup decoder %s annotation %s.", dec_id, ann_id);
 349                                 /* Lookup annotation class. */
 350                                 ann_class = 0;
 351                                 for (l = dec->annotations; l; l = l->next, ann_class++) {
 352                                         ann_descr = l->data;
 353                                         if (!canon_cmp(ann_descr[0], ann_id))
 354                                                 /* Found it. */
 355                                                 break;
 356                                 }
 357                                 if (l) {
 358                                         l_ann = g_hash_table_lookup(pd_ann_visible, dec_id);
 359                                         l_ann = g_slist_append(l_ann, GINT_TO_POINTER(ann_class));
 360                                         g_hash_table_replace(pd_ann_visible, g_strdup(dec_id), l_ann);
 361                                         g_debug("cli: Showing protocol decoder %s annotation "
 362                                                         "class %d (%s).", dec_id, ann_class, ann_descr[0]);
 363                                         continue;
 364                                 }
 365                                 /* Lookup annotation row. */
 366                                 for (l = dec->annotation_rows; l; l = l->next) {
 367                                         row_desc = l->data;
 368                                         if (!canon_cmp(row_desc->id, ann_id))
 369                                                 break;
 370                                 }
 371                                 if (l) {
 372                                         g_debug("cli: Showing decoder %s annotation row %s (%s).",
 373                                                 dec_id, row_desc->id, row_desc->desc);
 374                                         l_ann = g_hash_table_lookup(pd_ann_visible, dec_id);
 375                                         for (l = row_desc->ann_classes; l; l = l->next) {
 376                                                 /*
 377                                                  * This could just be:
 378                                                  *   l_ann = g_slist_append(l_ann, l->data);
 379                                                  * But we are explicit for readability
 380                                                  * and to access details for diagnostics.
 381                                                  */
 382                                                 ann_class = GPOINTER_TO_INT(l->data);
 383                                                 l_ann = g_slist_append(l_ann, GINT_TO_POINTER(ann_class));
 384                                                 ann_diag = g_slist_nth_data(dec->annotations, ann_class);
 385                                                 g_debug("cli: Adding class %d/%s from row %s.",
 386                                                         ann_class, ann_diag[0], row_desc->id);
 387                                         }
 388                                         g_hash_table_replace(pd_ann_visible, g_strdup(dec_id), l_ann);
 389                                         continue;
 390                                 }
 391                                 /* No match found. */
 392                                 g_critical("Annotation '%s' not found "
 393                                                 "for protocol decoder '%s'.", ann_id, dec_id);
 394                                 g_strfreev(keyval);
 395                                 g_strfreev(pds);
 396                                 return 1;
 397                         }
 398                 } else {
 399                         /* No class specified: show all of them. */
 400                         ann_class = -1;
 401                         l_ann = g_slist_append(NULL, GINT_TO_POINTER(ann_class));
 402                         g_hash_table_insert(pd_ann_visible, g_strdup(dec_id), l_ann);
 403                         g_debug("cli: Showing all annotation classes for protocol "
 404                                         "decoder %s.", dec_id);
 405                 }
 406                 g_strfreev(keyval);
 407         }
 408         g_strfreev(pds);
 409
 410         return 0;
 411 }
 412
 413 int setup_pd_meta(char *opt_pd_meta)
 414 {
 415         struct srd_decoder *dec;
 416         char **pds, **pdtok;
 417
 418         pd_meta_visible = g_hash_table_new_full(g_str_hash, g_int_equal,
 419                         g_free, NULL);
 420         pds = g_strsplit(opt_pd_meta, ",", 0);
 421         for (pdtok = pds; *pdtok && **pdtok; pdtok++) {
 422                 if (!(dec = srd_decoder_get_by_id(*pdtok))) {
 423                         g_critical("Protocol decoder '%s' not found.", *pdtok);
 424                         return 1;
 425                 }
 426                 g_debug("cli: Showing protocol decoder meta output from '%s'.", *pdtok);
 427                 g_hash_table_insert(pd_meta_visible, g_strdup(*pdtok), NULL);
 428         }
 429         g_strfreev(pds);
 430
 431         return 0;
 432 }
 433
 434 int setup_pd_binary(char *opt_pd_binary)
 435 {
 436         GSList *l;
 437         struct srd_decoder *dec;
 438         int bin_class;
 439         char **pds, **pdtok, **keyval, **bin_name;
 440
 441         pd_binary_visible = g_hash_table_new_full(g_str_hash, g_int_equal,
 442                         g_free, NULL);
 443         pds = g_strsplit(opt_pd_binary, ",", 0);
 444         for (pdtok = pds; *pdtok && **pdtok; pdtok++) {
 445                 keyval = g_strsplit(*pdtok, "=", 0);
 446                 if (!(dec = srd_decoder_get_by_id(keyval[0]))) {
 447                         g_critical("Protocol decoder '%s' not found.", keyval[0]);
 448                         return 1;
 449                 }
 450                 if (!dec->binary) {
 451                         g_critical("Protocol decoder '%s' has no binary output.", keyval[0]);
 452                         return 1;
 453                 }
 454                 bin_class = 0;
 455                 if (g_strv_length(keyval) == 2) {
 456                         for (l = dec->binary; l; l = l->next, bin_class++) {
 457                                 bin_name = l->data;
 458                                 if (!strcmp(bin_name[0], keyval[1]))
 459                                         /* Found it. */
 460                                         break;
 461                         }
 462                         if (!l) {
 463                                 g_critical("binary output '%s' not found "
 464                                                 "for protocol decoder '%s'.", keyval[1], keyval[0]);
 465                                 return 1;
 466                         }
 467                         g_debug("cli: Showing protocol decoder %s binary class "
 468                                         "%d (%s).", keyval[0], bin_class, bin_name[0]);
 469                 } else {
 470                         /* No class specified: output all of them. */
 471                         bin_class = -1;
 472                         g_debug("cli: Showing all binary classes for protocol "
 473                                         "decoder %s.", keyval[0]);
 474                 }
 475                 g_hash_table_insert(pd_binary_visible, g_strdup(keyval[0]), GINT_TO_POINTER(bin_class));
 476                 g_strfreev(keyval);
 477         }
 478         g_strfreev(pds);
 479
 480         return 0;
 481 }
 482
 483 /*
 484  * Balance JSON object and array parentheses, and separate array items.
 485  * Somewhat convoluted API to re-use the routine for individual items as
 486  * well as the surrounding array and object, including deferred start of
 487  * the output and late flush (and to keep the state strictly local to the
 488  * routine). Some additional complexity due to JSON's inability to handle
 489  * a trailing comma at the last item. Code phrased such that text literals
 490  * are kept in their order of appearance in the output text.
 491  */
 492 static void jsontrace_open_close(gboolean is_close_req)
 493 {
 494         static gboolean is_opened;
 495
 496         if (!is_close_req) {
 497                 if (!is_opened) {
 498                         printf("{\"traceEvents\": [\n");
 499                         is_opened = TRUE;
 500                 } else {
 501                         printf(",\n");
 502                 }
 503         } else {
 504                 if (is_opened) {
 505                         printf("\n");
 506                         printf("]}\n");
 507                         fflush(stdout);
 508                 }
 509                 is_opened = FALSE;
 510         }
 511 }
 512
 513 /* Convert uint64 sample number to double timestamp in microseconds. */
 514 static double jsontrace_ts_usec(uint64_t snum)
 515 {
 516         double ts_usec;
 517
 518         ts_usec = snum;
 519         ts_usec *= 1e6;
 520         ts_usec /= pd_samplerate;
 521         return ts_usec;
 522 }
 523
 524 /* Emit two Google Trace Events (JSON) for one PD annotation (ss, es). */
 525 static void jsontrace_annotation(struct srd_decoder *dec,
 526         struct srd_proto_data_annotation *pda, struct srd_proto_data *pdata)
 527 {
 528         char *row_text;
 529         GSList *lrow, *lcls;
 530         struct srd_decoder_annotation_row *row;
 531         int cls;
 532         char **ann_descr;
 533
 534         /*
 535          * Search for an annotation row for this index, or use the
 536          * annotation's descriptor.
 537          */
 538         row_text = NULL;
 539         if (dec->annotation_rows) {
 540                 for (lrow = dec->annotation_rows; lrow; lrow = lrow->next) {
 541                         row = lrow->data;
 542                         for (lcls = row->ann_classes; lcls; lcls = lcls->next) {
 543                                 cls = GPOINTER_TO_INT(lcls->data);
 544                                 if (cls == pda->ann_class) {
 545                                         row_text = row->desc;
 546                                         break;
 547                                 }
 548                         }
 549                         if (row_text)
 550                                 break;
 551                 }
 552         }
 553         if (!row_text) {
 554                 ann_descr = g_slist_nth_data(dec->annotations, pda->ann_class);
 555                 row_text = ann_descr[0];
 556         }
 557
 558         /*
 559          * Emit two Google Trace Events for the start and end times.
 560          * Set the 'pid' (process ID) to the decoder name to group a
 561          * decoder's annotations. Set the 'tid' (thread ID) to the
 562          * annotation row's description. The 'ts' (timestamp) is in
 563          * microseconds. Set 'name' to the longest annotation text.
 564          *
 565          * BEWARE of the unfortunate JSON format comma limitation. And
 566          * some of the output formatting is motivated by the desire to
 567          * further reduce text size, by eliminating some of the spaces.
 568          *
 569          * This implementation is strictly compatible to the initial
 570          * implementation. Which might change in the future to increase
 571          * readability of the output to humans, by generating a layout
 572          * which is closer to other output modes.
 573          */
 574         jsontrace_open_close(FALSE);
 575         printf("{");
 576         printf("\"%s\": \"%s\"", "name", pda->ann_text[0]);
 577         printf(", \"%s\": \"%s\"", "ph", "B");
 578         printf(", \"%s\": \"%s\"", "pid", pdata->pdo->proto_id);
 579         printf(", \"%s\": \"%s\"", "tid", row_text);
 580         printf(", \"%s\": %lf", "ts", jsontrace_ts_usec(pdata->start_sample));
 581         printf("}");
 582
 583         jsontrace_open_close(FALSE);
 584         printf("{");
 585         printf("\"%s\": \"%s\"", "name", pda->ann_text[0]);
 586         printf(", \"%s\": \"%s\"", "ph", "E");
 587         printf(", \"%s\": \"%s\"", "pid", pdata->pdo->proto_id);
 588         printf(", \"%s\": \"%s\"", "tid", row_text);
 589         printf(", \"%s\": %lf", "ts", jsontrace_ts_usec(pdata->end_sample));
 590         printf("}");
 591 }
 592
 593 void show_pd_annotations(struct srd_proto_data *pdata, void *cb_data)
 594 {
 595         struct srd_decoder *dec;
 596         struct srd_proto_data_annotation *pda;
 597         GSList *ann_list, *l;
 598         int i;
 599         char **ann_descr;
 600         gboolean show_ann, show_snum, show_class, show_quotes, show_abbrev;
 601         const char *quote;
 602
 603         (void)cb_data;
 604
 605         if (!pd_ann_visible)
 606                 return;
 607
 608         if (!g_hash_table_lookup_extended(pd_ann_visible, pdata->pdo->di->decoder->id,
 609                         NULL, (void **)&ann_list)) {
 610                 /* Not in the list of PDs whose annotations we're showing. */
 611                 return;
 612         }
 613
 614         dec = pdata->pdo->di->decoder;
 615         pda = pdata->data;
 616         show_ann = FALSE;
 617         for (l = ann_list; l; l = l->next) {
 618                 if (GPOINTER_TO_INT(l->data) == -1
 619                                 || GPOINTER_TO_INT(l->data) == pda->ann_class) {
 620                         show_ann = TRUE;
 621                         break;
 622                 }
 623         }
 624         if (!show_ann)
 625                 return;
 626
 627         /* Google Trace Events are rather special. Use a separate code path. */
 628         if (opt_pd_jsontrace) {
 629                 jsontrace_annotation(dec, pda, pdata);
 630                 return;
 631         }
 632
 633         /*
 634          * Determine which fields of the annotation to display. Inspect
 635          * user specified options as well as the verbosity of the log level:
 636          * - Optionally show the sample numbers for the annotation's span.
 637          * - Always show the protocol decoder ID.
 638          * - Optionally show the annotation's class description.
 639          * - Always show the longest annotation text.
 640          * - Optionally show alternative annotation text (abbreviations
 641          *   for different zoom levels).
 642          * - Optionally put quote marks around annotation text, when
 643          *   recipients might have to deal with a set of text variants.
 644          */
 645         show_snum = show_class = show_quotes = show_abbrev = FALSE;
 646         if (opt_pd_samplenum || opt_loglevel > SR_LOG_WARN) {
 647                 show_snum = TRUE;
 648         }
 649         if (opt_loglevel > SR_LOG_WARN) {
 650                 show_quotes = TRUE;
 651         }
 652         if (opt_loglevel > SR_LOG_INFO) {
 653                 show_class = TRUE;
 654                 show_abbrev = TRUE;
 655         }
 656
 657         /*
 658          * Display the annotation's fields after the layout was
 659          * determined above.
 660          */
 661         if (show_snum) {
 662                 printf("%" PRIu64 "-%" PRIu64 " ",
 663                         pdata->start_sample, pdata->end_sample);
 664         }
 665         printf("%s: ", pdata->pdo->proto_id);
 666         if (show_class) {
 667                 ann_descr = g_slist_nth_data(dec->annotations, pda->ann_class);
 668                 printf("%s: ", ann_descr[0]);
 669         }
 670         quote = show_quotes ? "\"" : "";
 671         printf("%s%s%s", quote, pda->ann_text[0], quote);
 672         if (show_abbrev) {
 673                 for (i = 1; pda->ann_text[i]; i++)
 674                         printf(" %s%s%s", quote, pda->ann_text[i], quote);
 675         }
 676         printf("\n");
 677         fflush(stdout);
 678 }
 679
 680 void show_pd_meta(struct srd_proto_data *pdata, void *cb_data)
 681 {
 682         (void)cb_data;
 683
 684         if (!g_hash_table_lookup_extended(pd_meta_visible,
 685                         pdata->pdo->di->decoder->id, NULL, NULL))
 686                 /* Not in the list of PDs whose meta output we're showing. */
 687                 return;
 688
 689         if (opt_pd_samplenum || opt_loglevel > SR_LOG_WARN)
 690                 printf("%"PRIu64"-%"PRIu64" ", pdata->start_sample, pdata->end_sample);
 691         printf("%s: ", pdata->pdo->proto_id);
 692         printf("%s: %s", pdata->pdo->meta_name, g_variant_print(pdata->data, FALSE));
 693         printf("\n");
 694         fflush(stdout);
 695 }
 696
 697 void show_pd_binary(struct srd_proto_data *pdata, void *cb_data)
 698 {
 699         struct srd_proto_data_binary *pdb;
 700         gpointer classp;
 701         int classi;
 702
 703         (void)cb_data;
 704
 705         if (!g_hash_table_lookup_extended(pd_binary_visible,
 706                         pdata->pdo->di->decoder->id, NULL, (void **)&classp))
 707                 /* Not in the list of PDs whose meta output we're showing. */
 708                 return;
 709
 710         classi = GPOINTER_TO_INT(classp);
 711         pdb = pdata->data;
 712         if (classi != -1 && classi != pdb->bin_class)
 713                 /* Not showing this binary class. */
 714                 return;
 715
 716         /* Just send the binary output to stdout, no embellishments. */
 717         fwrite(pdb->data, pdb->size, 1, stdout);
 718         fflush(stdout);
 719 }
 720
 721 void show_pd_prepare(void)
 722 {
 723         if (opt_pd_jsontrace)
 724                 jsontrace_open_close(TRUE);
 725 }
 726
 727 void show_pd_close(void)
 728 {
 729         if (opt_pd_jsontrace)
 730                 jsontrace_open_close(TRUE);
 731 }
 732 #endif