src/lib/trace-ir/stream-class.c

   1 /*
   2  * Copyright 2017-2018 Philippe Proulx <pproulx@efficios.com>
   3  * Copyright 2013, 2014 Jérémie Galarneau <jeremie.galarneau@efficios.com>
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a copy
   6  * of this software and associated documentation files (the "Software"), to deal
   7  * in the Software without restriction, including without limitation the rights
   8  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   9  * copies of the Software, and to permit persons to whom the Software is
  10  * furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be included in
  13  * all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  18  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  20  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  21  * SOFTWARE.
  22  */
  23
  24 #define BT_LOG_TAG "LIB/STREAM-CLASS"
  25 #include "lib/lib-logging.h"
  26
  27 #include "lib/assert-pre.h"
  28 #include <babeltrace2/trace-ir/trace-const.h>
  29 #include "compat/compiler.h"
  30 #include "common/align.h"
  31 #include "compat/endian.h"
  32 #include "common/assert.h"
  33 #include "lib/property.h"
  34 #include <inttypes.h>
  35 #include <stdint.h>
  36 #include <stdbool.h>
  37
  38 #include "clock-class.h"
  39 #include "event-class.h"
  40 #include "field-class.h"
  41 #include "field.h"
  42 #include "field-wrapper.h"
  43 #include "resolve-field-path.h"
  44 #include "stream-class.h"
  45 #include "trace.h"
  46 #include "utils.h"
  47
  48 #define BT_ASSERT_PRE_STREAM_CLASS_HOT(_sc) \
  49         BT_ASSERT_PRE_HOT((_sc), "Stream class", ": %!+S", (_sc))
  50
  51 static
  52 void destroy_stream_class(struct bt_object *obj)
  53 {
  54         struct bt_stream_class *stream_class = (void *) obj;
  55
  56         BT_LIB_LOGD("Destroying stream class: %!+S", stream_class);
  57         BT_LOGD_STR("Putting default clock class.");
  58         BT_OBJECT_PUT_REF_AND_RESET(stream_class->default_clock_class);
  59
  60         if (stream_class->event_classes) {
  61                 BT_LOGD_STR("Destroying event classes.");
  62                 g_ptr_array_free(stream_class->event_classes, TRUE);
  63                 stream_class->event_classes = NULL;
  64         }
  65
  66         if (stream_class->name.str) {
  67                 g_string_free(stream_class->name.str, TRUE);
  68                 stream_class->name.str = NULL;
  69                 stream_class->name.value = NULL;
  70         }
  71
  72         BT_LOGD_STR("Putting packet context field class.");
  73         BT_OBJECT_PUT_REF_AND_RESET(stream_class->packet_context_fc);
  74         BT_LOGD_STR("Putting event common context field class.");
  75         BT_OBJECT_PUT_REF_AND_RESET(stream_class->event_common_context_fc);
  76         bt_object_pool_finalize(&stream_class->packet_context_field_pool);
  77         g_free(stream_class);
  78 }
  79
  80 static
  81 void free_field_wrapper(struct bt_field_wrapper *field_wrapper,
  82                 struct bt_stream_class *stream_class)
  83 {
  84         bt_field_wrapper_destroy((void *) field_wrapper);
  85 }
  86
  87 BT_ASSERT_PRE_FUNC
  88 static
  89 bool stream_class_id_is_unique(const struct bt_trace_class *tc, uint64_t id)
  90 {
  91         uint64_t i;
  92         bool is_unique = true;
  93
  94         for (i = 0; i < tc->stream_classes->len; i++) {
  95                 const struct bt_stream_class *sc =
  96                         tc->stream_classes->pdata[i];
  97
  98                 if (sc->id == id) {
  99                         is_unique = false;
 100                         goto end;
 101                 }
 102         }
 103
 104 end:
 105         return is_unique;
 106 }
 107
 108 static
 109 struct bt_stream_class *create_stream_class_with_id(
 110                 struct bt_trace_class *tc, uint64_t id)
 111 {
 112         struct bt_stream_class *stream_class = NULL;
 113         int ret;
 114
 115         BT_ASSERT(tc);
 116         BT_ASSERT_PRE(stream_class_id_is_unique(tc, id),
 117                 "Duplicate stream class ID: %![tc-]+T, id=%" PRIu64, tc, id);
 118         BT_LIB_LOGD("Creating stream class object: %![tc-]+T, id=%" PRIu64,
 119                 tc, id);
 120         stream_class = g_new0(struct bt_stream_class, 1);
 121         if (!stream_class) {
 122                 BT_LOGE_STR("Failed to allocate one stream class.");
 123                 goto error;
 124         }
 125
 126         bt_object_init_shared_with_parent(&stream_class->base,
 127                 destroy_stream_class);
 128
 129         stream_class->name.str = g_string_new(NULL);
 130         if (!stream_class->name.str) {
 131                 BT_LOGE_STR("Failed to allocate a GString.");
 132                 ret = -1;
 133                 goto end;
 134         }
 135
 136         stream_class->id = id;
 137         stream_class->assigns_automatic_event_class_id = true;
 138         stream_class->assigns_automatic_stream_id = true;
 139         stream_class->event_classes = g_ptr_array_new_with_free_func(
 140                 (GDestroyNotify) bt_object_try_spec_release);
 141         if (!stream_class->event_classes) {
 142                 BT_LOGE_STR("Failed to allocate a GPtrArray.");
 143                 goto error;
 144         }
 145
 146         ret = bt_object_pool_initialize(&stream_class->packet_context_field_pool,
 147                 (bt_object_pool_new_object_func) bt_field_wrapper_new,
 148                 (bt_object_pool_destroy_object_func) free_field_wrapper,
 149                 stream_class);
 150         if (ret) {
 151                 BT_LOGE("Failed to initialize packet context field pool: ret=%d",
 152                         ret);
 153                 goto error;
 154         }
 155
 156         bt_object_set_parent(&stream_class->base, &tc->base);
 157         g_ptr_array_add(tc->stream_classes, stream_class);
 158         bt_trace_class_freeze(tc);
 159         BT_LIB_LOGD("Created stream class object: %!+S", stream_class);
 160         goto end;
 161
 162 error:
 163         BT_OBJECT_PUT_REF_AND_RESET(stream_class);
 164
 165 end:
 166         return stream_class;
 167 }
 168
 169 struct bt_stream_class *bt_stream_class_create(struct bt_trace_class *tc)
 170 {
 171         BT_ASSERT_PRE_NON_NULL(tc, "Trace class");
 172         BT_ASSERT_PRE(tc->assigns_automatic_stream_class_id,
 173                 "Trace class does not automatically assigns stream class IDs: "
 174                 "%![sc-]+T", tc);
 175         return create_stream_class_with_id(tc,
 176                 (uint64_t) tc->stream_classes->len);
 177 }
 178
 179 struct bt_stream_class *bt_stream_class_create_with_id(
 180                 struct bt_trace_class *tc, uint64_t id)
 181 {
 182         BT_ASSERT_PRE_NON_NULL(tc, "Trace class");
 183         BT_ASSERT_PRE(!tc->assigns_automatic_stream_class_id,
 184                 "Trace class automatically assigns stream class IDs: "
 185                 "%![sc-]+T", tc);
 186         return create_stream_class_with_id(tc, id);
 187 }
 188
 189 struct bt_trace_class *bt_stream_class_borrow_trace_class(
 190                 struct bt_stream_class *stream_class)
 191 {
 192         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 193         return bt_stream_class_borrow_trace_class_inline(stream_class);
 194 }
 195
 196 const struct bt_trace_class *bt_stream_class_borrow_trace_class_const(
 197                 const struct bt_stream_class *stream_class)
 198 {
 199         return bt_stream_class_borrow_trace_class((void *) stream_class);
 200 }
 201
 202 const char *bt_stream_class_get_name(const struct bt_stream_class *stream_class)
 203 {
 204         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 205         return stream_class->name.value;
 206 }
 207
 208 enum bt_stream_class_status bt_stream_class_set_name(
 209                 struct bt_stream_class *stream_class,
 210                 const char *name)
 211 {
 212         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 213         BT_ASSERT_PRE_NON_NULL(name, "Name");
 214         BT_ASSERT_PRE_STREAM_CLASS_HOT(stream_class);
 215         g_string_assign(stream_class->name.str, name);
 216         stream_class->name.value = stream_class->name.str->str;
 217         BT_LIB_LOGD("Set stream class's name: %!+S", stream_class);
 218         return BT_STREAM_CLASS_STATUS_OK;
 219 }
 220
 221 uint64_t bt_stream_class_get_id(const struct bt_stream_class *stream_class)
 222 {
 223         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 224         return stream_class->id;
 225 }
 226
 227 uint64_t bt_stream_class_get_event_class_count(
 228                 const struct bt_stream_class *stream_class)
 229 {
 230         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 231         return (uint64_t) stream_class->event_classes->len;
 232 }
 233
 234 struct bt_event_class *bt_stream_class_borrow_event_class_by_index(
 235                 struct bt_stream_class *stream_class, uint64_t index)
 236 {
 237         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 238         BT_ASSERT_PRE_VALID_INDEX(index, stream_class->event_classes->len);
 239         return g_ptr_array_index(stream_class->event_classes, index);
 240 }
 241
 242 const struct bt_event_class *
 243 bt_stream_class_borrow_event_class_by_index_const(
 244                 const struct bt_stream_class *stream_class, uint64_t index)
 245 {
 246         return bt_stream_class_borrow_event_class_by_index(
 247                 (void *) stream_class, index);
 248 }
 249
 250 struct bt_event_class *bt_stream_class_borrow_event_class_by_id(
 251                 struct bt_stream_class *stream_class, uint64_t id)
 252 {
 253         struct bt_event_class *event_class = NULL;
 254         uint64_t i;
 255
 256         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 257
 258         for (i = 0; i < stream_class->event_classes->len; i++) {
 259                 struct bt_event_class *event_class_candidate =
 260                         g_ptr_array_index(stream_class->event_classes, i);
 261
 262                 if (event_class_candidate->id == id) {
 263                         event_class = event_class_candidate;
 264                         goto end;
 265                 }
 266         }
 267
 268 end:
 269         return event_class;
 270 }
 271
 272 const struct bt_event_class *
 273 bt_stream_class_borrow_event_class_by_id_const(
 274                 const struct bt_stream_class *stream_class, uint64_t id)
 275 {
 276         return bt_stream_class_borrow_event_class_by_id(
 277                 (void *) stream_class, id);
 278 }
 279
 280 const struct bt_field_class *
 281 bt_stream_class_borrow_packet_context_field_class_const(
 282                 const struct bt_stream_class *stream_class)
 283 {
 284         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 285         return stream_class->packet_context_fc;
 286 }
 287
 288 struct bt_field_class *
 289 bt_stream_class_borrow_packet_context_field_class(
 290                 struct bt_stream_class *stream_class)
 291 {
 292         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 293         return stream_class->packet_context_fc;
 294 }
 295
 296 enum bt_stream_class_status bt_stream_class_set_packet_context_field_class(
 297                 struct bt_stream_class *stream_class,
 298                 struct bt_field_class *field_class)
 299 {
 300         int ret;
 301         struct bt_resolve_field_path_context resolve_ctx = {
 302                 .packet_context = field_class,
 303                 .event_common_context = NULL,
 304                 .event_specific_context = NULL,
 305                 .event_payload = NULL,
 306         };
 307
 308         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 309         BT_ASSERT_PRE_NON_NULL(field_class, "Field class");
 310         BT_ASSERT_PRE_STREAM_CLASS_HOT(stream_class);
 311         BT_ASSERT_PRE(bt_field_class_get_type(field_class) ==
 312                 BT_FIELD_CLASS_TYPE_STRUCTURE,
 313                 "Packet context field class is not a structure field class: %!+F",
 314                 field_class);
 315         ret = bt_resolve_field_paths(field_class, &resolve_ctx);
 316         if (ret) {
 317                 /*
 318                  * This is the only reason for which
 319                  * bt_resolve_field_paths() can fail: anything else
 320                  * would be because a precondition is not satisfied.
 321                  */
 322                 ret = BT_STREAM_CLASS_STATUS_NOMEM;
 323                 goto end;
 324         }
 325
 326         bt_field_class_make_part_of_trace_class(field_class);
 327         bt_object_put_ref(stream_class->packet_context_fc);
 328         stream_class->packet_context_fc = field_class;
 329         bt_object_get_no_null_check(stream_class->packet_context_fc);
 330         bt_field_class_freeze(field_class);
 331         BT_LIB_LOGD("Set stream class's packet context field class: %!+S",
 332                 stream_class);
 333
 334 end:
 335         return ret;
 336 }
 337
 338 const struct bt_field_class *
 339 bt_stream_class_borrow_event_common_context_field_class_const(
 340                 const struct bt_stream_class *stream_class)
 341 {
 342         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 343         return stream_class->event_common_context_fc;
 344 }
 345
 346 struct bt_field_class *
 347 bt_stream_class_borrow_event_common_context_field_class(
 348                 struct bt_stream_class *stream_class)
 349 {
 350         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 351         return stream_class->event_common_context_fc;
 352 }
 353
 354 enum bt_stream_class_status
 355 bt_stream_class_set_event_common_context_field_class(
 356                 struct bt_stream_class *stream_class,
 357                 struct bt_field_class *field_class)
 358 {
 359         int ret;
 360         struct bt_resolve_field_path_context resolve_ctx = {
 361                 .packet_context = NULL,
 362                 .event_common_context = field_class,
 363                 .event_specific_context = NULL,
 364                 .event_payload = NULL,
 365         };
 366
 367         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 368         BT_ASSERT_PRE_NON_NULL(field_class, "Field class");
 369         BT_ASSERT_PRE_STREAM_CLASS_HOT(stream_class);
 370         BT_ASSERT_PRE(bt_field_class_get_type(field_class) ==
 371                 BT_FIELD_CLASS_TYPE_STRUCTURE,
 372                 "Event common context field class is not a structure field class: %!+F",
 373                 field_class);
 374         resolve_ctx.packet_context = stream_class->packet_context_fc;
 375         ret = bt_resolve_field_paths(field_class, &resolve_ctx);
 376         if (ret) {
 377                 /*
 378                  * This is the only reason for which
 379                  * bt_resolve_field_paths() can fail: anything else
 380                  * would be because a precondition is not satisfied.
 381                  */
 382                 ret = BT_STREAM_CLASS_STATUS_NOMEM;
 383                 goto end;
 384         }
 385
 386         bt_field_class_make_part_of_trace_class(field_class);
 387         bt_object_put_ref(stream_class->event_common_context_fc);
 388         stream_class->event_common_context_fc = field_class;
 389         bt_object_get_no_null_check(stream_class->event_common_context_fc);
 390         bt_field_class_freeze(field_class);
 391         BT_LIB_LOGD("Set stream class's event common context field class: %!+S",
 392                 stream_class);
 393
 394 end:
 395         return ret;
 396 }
 397
 398 BT_HIDDEN
 399 void _bt_stream_class_freeze(const struct bt_stream_class *stream_class)
 400 {
 401         /* The field classes and default clock class are already frozen */
 402         BT_ASSERT(stream_class);
 403         BT_LIB_LOGD("Freezing stream class: %!+S", stream_class);
 404         ((struct bt_stream_class *) stream_class)->frozen = true;
 405 }
 406
 407 enum bt_stream_class_status bt_stream_class_set_default_clock_class(
 408                 struct bt_stream_class *stream_class,
 409                 struct bt_clock_class *clock_class)
 410 {
 411         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 412         BT_ASSERT_PRE_NON_NULL(clock_class, "Clock class");
 413         BT_ASSERT_PRE_STREAM_CLASS_HOT(stream_class);
 414         bt_object_put_ref(stream_class->default_clock_class);
 415         stream_class->default_clock_class = clock_class;
 416         bt_object_get_no_null_check(stream_class->default_clock_class);
 417         bt_clock_class_freeze(clock_class);
 418         BT_LIB_LOGD("Set stream class's default clock class: %!+S",
 419                 stream_class);
 420         return BT_STREAM_CLASS_STATUS_OK;
 421 }
 422
 423 struct bt_clock_class *bt_stream_class_borrow_default_clock_class(
 424                 struct bt_stream_class *stream_class)
 425 {
 426         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 427         return stream_class->default_clock_class;
 428 }
 429
 430 const struct bt_clock_class *bt_stream_class_borrow_default_clock_class_const(
 431                 const struct bt_stream_class *stream_class)
 432 {
 433         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 434         return stream_class->default_clock_class;
 435 }
 436
 437 bt_bool bt_stream_class_assigns_automatic_event_class_id(
 438                 const struct bt_stream_class *stream_class)
 439 {
 440         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 441         return (bt_bool) stream_class->assigns_automatic_event_class_id;
 442 }
 443
 444 void bt_stream_class_set_assigns_automatic_event_class_id(
 445                 struct bt_stream_class *stream_class,
 446                 bt_bool value)
 447 {
 448         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 449         BT_ASSERT_PRE_STREAM_CLASS_HOT(stream_class);
 450         stream_class->assigns_automatic_event_class_id = (bool) value;
 451         BT_LIB_LOGD("Set stream class's automatic event class ID "
 452                 "assignment property: %!+S", stream_class);
 453 }
 454
 455 bt_bool bt_stream_class_packets_have_beginning_default_clock_snapshot(
 456                 const struct bt_stream_class *stream_class)
 457 {
 458         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 459         return (bt_bool) stream_class->packets_have_beginning_default_clock_snapshot;
 460 }
 461
 462 void bt_stream_class_set_packets_have_beginning_default_clock_snapshot(
 463                 struct bt_stream_class *stream_class, bt_bool value)
 464 {
 465         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 466         BT_ASSERT_PRE_STREAM_CLASS_HOT(stream_class);
 467         BT_ASSERT_PRE(!value || stream_class->default_clock_class,
 468                 "Stream class has no default clock class: %!+S", stream_class);
 469         stream_class->packets_have_beginning_default_clock_snapshot =
 470                 (bool) value;
 471         BT_LIB_LOGD("Set stream class's \"packets have default beginning "
 472                 "clock snapshot\" property: %!+S", stream_class);
 473 }
 474
 475 bt_bool bt_stream_class_packets_have_end_default_clock_snapshot(
 476                 const struct bt_stream_class *stream_class)
 477 {
 478         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 479         return (bt_bool) stream_class->packets_have_end_default_clock_snapshot;
 480 }
 481
 482 void bt_stream_class_set_packets_have_end_default_clock_snapshot(
 483                 struct bt_stream_class *stream_class, bt_bool value)
 484 {
 485         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 486         BT_ASSERT_PRE_STREAM_CLASS_HOT(stream_class);
 487         BT_ASSERT_PRE(!value || stream_class->default_clock_class,
 488                 "Stream class has no default clock class: %!+S", stream_class);
 489         stream_class->packets_have_end_default_clock_snapshot =
 490                 (bool) value;
 491         BT_LIB_LOGD("Set stream class's \"packets have default end "
 492                 "clock snapshot\" property: %!+S", stream_class);
 493 }
 494
 495 bt_bool bt_stream_class_assigns_automatic_stream_id(
 496                 const struct bt_stream_class *stream_class)
 497 {
 498         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 499         return (bt_bool) stream_class->assigns_automatic_stream_id;
 500 }
 501
 502 void bt_stream_class_set_supports_discarded_events(
 503                 struct bt_stream_class *stream_class,
 504                 bt_bool supports_discarded_events,
 505                 bt_bool with_default_clock_snapshots)
 506 {
 507         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 508         BT_ASSERT_PRE_STREAM_CLASS_HOT(stream_class);
 509         BT_ASSERT_PRE(supports_discarded_events ||
 510                 !with_default_clock_snapshots,
 511                 "Discarded events cannot have default clock snapshots when "
 512                 "not supported: %!+S", stream_class);
 513         BT_ASSERT_PRE(!with_default_clock_snapshots ||
 514                 stream_class->default_clock_class,
 515                 "Stream class has no default clock class: %!+S", stream_class);
 516         stream_class->supports_discarded_events =
 517                 (bool) supports_discarded_events;
 518         stream_class->discarded_events_have_default_clock_snapshots =
 519                 (bool) with_default_clock_snapshots;
 520         BT_LIB_LOGD("Set stream class's discarded events support property: "
 521                 "%!+S", stream_class);
 522 }
 523
 524 bt_bool bt_stream_class_supports_discarded_events(
 525                 const struct bt_stream_class *stream_class)
 526 {
 527         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 528         return (bt_bool) stream_class->supports_discarded_events;
 529 }
 530
 531 bt_bool bt_stream_class_discarded_events_have_default_clock_snapshots(
 532                 const struct bt_stream_class *stream_class)
 533 {
 534         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 535         return (bt_bool) stream_class->discarded_events_have_default_clock_snapshots;
 536 }
 537
 538 void bt_stream_class_set_supports_discarded_packets(
 539                 struct bt_stream_class *stream_class,
 540                 bt_bool supports_discarded_packets,
 541                 bt_bool with_default_clock_snapshots)
 542 {
 543         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 544         BT_ASSERT_PRE_STREAM_CLASS_HOT(stream_class);
 545         BT_ASSERT_PRE(supports_discarded_packets ||
 546                 !with_default_clock_snapshots,
 547                 "Discarded packets cannot have default clock snapshots when "
 548                 "not supported: %!+S", stream_class);
 549         BT_ASSERT_PRE(!with_default_clock_snapshots ||
 550                 stream_class->default_clock_class,
 551                 "Stream class has no default clock class: %!+S", stream_class);
 552         stream_class->supports_discarded_packets =
 553                 (bool) supports_discarded_packets;
 554         stream_class->discarded_packets_have_default_clock_snapshots =
 555                 (bool) with_default_clock_snapshots;
 556         BT_LIB_LOGD("Set stream class's discarded packets support property: "
 557                 "%!+S", stream_class);
 558 }
 559
 560 bt_bool bt_stream_class_supports_discarded_packets(
 561                 const struct bt_stream_class *stream_class)
 562 {
 563         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 564         return (bt_bool) stream_class->supports_discarded_packets;
 565 }
 566
 567 bt_bool bt_stream_class_discarded_packets_have_default_clock_snapshots(
 568                 const struct bt_stream_class *stream_class)
 569 {
 570         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 571         return (bt_bool) stream_class->discarded_packets_have_default_clock_snapshots;
 572 }
 573
 574 void bt_stream_class_set_assigns_automatic_stream_id(
 575                 struct bt_stream_class *stream_class,
 576                 bt_bool value)
 577 {
 578         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 579         BT_ASSERT_PRE_STREAM_CLASS_HOT(stream_class);
 580         stream_class->assigns_automatic_stream_id = (bool) value;
 581         BT_LIB_LOGD("Set stream class's automatic stream ID "
 582                 "assignment property: %!+S", stream_class);
 583 }
 584
 585 void bt_stream_class_get_ref(const struct bt_stream_class *stream_class)
 586 {
 587         bt_object_get_ref(stream_class);
 588 }
 589
 590 void bt_stream_class_put_ref(const struct bt_stream_class *stream_class)
 591 {
 592         bt_object_put_ref(stream_class);
 593 }