| 1 | /* |
| 2 | * iterator.c |
| 3 | * |
| 4 | * Babeltrace Trace Trimmer Iterator |
| 5 | * |
| 6 | * Copyright 2016 Jérémie Galarneau <jeremie.galarneau@efficios.com> |
| 7 | * |
| 8 | * Author: Jérémie Galarneau <jeremie.galarneau@efficios.com> |
| 9 | * |
| 10 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 11 | * of this software and associated documentation files (the "Software"), to deal |
| 12 | * in the Software without restriction, including without limitation the rights |
| 13 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 14 | * copies of the Software, and to permit persons to whom the Software is |
| 15 | * furnished to do so, subject to the following conditions: |
| 16 | * |
| 17 | * The above copyright notice and this permission notice shall be included in |
| 18 | * all copies or substantial portions of the Software. |
| 19 | * |
| 20 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 21 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 22 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| 23 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 24 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 25 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 26 | * SOFTWARE. |
| 27 | */ |
| 28 | |
| 29 | #define BT_LOG_TAG "PLUGIN-UTILS-TRIMMER-FLT-ITER" |
| 30 | #include "logging.h" |
| 31 | |
| 32 | #include <babeltrace/compat/time-internal.h> |
| 33 | #include <babeltrace/compat/utc-internal.h> |
| 34 | #include <babeltrace/graph/notification-iterator.h> |
| 35 | #include <babeltrace/graph/private-connection-private-notification-iterator.h> |
| 36 | #include <babeltrace/graph/notification.h> |
| 37 | #include <babeltrace/graph/notification-event.h> |
| 38 | #include <babeltrace/graph/notification-stream.h> |
| 39 | #include <babeltrace/graph/notification-packet.h> |
| 40 | #include <babeltrace/graph/component-filter.h> |
| 41 | #include <babeltrace/graph/private-component-filter.h> |
| 42 | #include <babeltrace/graph/private-port.h> |
| 43 | #include <babeltrace/graph/private-connection.h> |
| 44 | #include <babeltrace/graph/private-component.h> |
| 45 | #include <babeltrace/graph/connection.h> |
| 46 | #include <babeltrace/ctf-ir/event.h> |
| 47 | #include <babeltrace/ctf-ir/stream.h> |
| 48 | #include <babeltrace/ctf-ir/stream-class.h> |
| 49 | #include <babeltrace/ctf-ir/clock-class.h> |
| 50 | #include <babeltrace/ctf-ir/packet.h> |
| 51 | #include <babeltrace/ctf-ir/trace.h> |
| 52 | #include <babeltrace/ctf-ir/fields.h> |
| 53 | #include <assert.h> |
| 54 | #include <plugins-common.h> |
| 55 | |
| 56 | #include "trimmer.h" |
| 57 | #include "iterator.h" |
| 58 | #include "copy.h" |
| 59 | |
| 60 | static |
| 61 | gboolean close_packets(gpointer key, gpointer value, gpointer user_data) |
| 62 | { |
| 63 | struct bt_ctf_packet *writer_packet = value; |
| 64 | |
| 65 | bt_put(writer_packet); |
| 66 | return TRUE; |
| 67 | } |
| 68 | |
| 69 | BT_HIDDEN |
| 70 | void trimmer_iterator_finalize(struct bt_private_connection_private_notification_iterator *it) |
| 71 | { |
| 72 | struct trimmer_iterator *trim_it; |
| 73 | |
| 74 | trim_it = bt_private_connection_private_notification_iterator_get_user_data(it); |
| 75 | assert(trim_it); |
| 76 | |
| 77 | bt_put(trim_it->input_iterator); |
| 78 | g_hash_table_foreach_remove(trim_it->packet_map, |
| 79 | close_packets, NULL); |
| 80 | g_hash_table_destroy(trim_it->packet_map); |
| 81 | g_free(trim_it); |
| 82 | } |
| 83 | |
| 84 | BT_HIDDEN |
| 85 | enum bt_notification_iterator_status trimmer_iterator_init( |
| 86 | struct bt_private_connection_private_notification_iterator *iterator, |
| 87 | struct bt_private_port *port) |
| 88 | { |
| 89 | enum bt_notification_iterator_status ret = |
| 90 | BT_NOTIFICATION_ITERATOR_STATUS_OK; |
| 91 | enum bt_notification_iterator_status it_ret; |
| 92 | enum bt_connection_status conn_status; |
| 93 | struct bt_private_port *input_port = NULL; |
| 94 | struct bt_private_connection *connection = NULL; |
| 95 | struct bt_private_component *component = |
| 96 | bt_private_connection_private_notification_iterator_get_private_component(iterator); |
| 97 | struct trimmer_iterator *it_data = g_new0(struct trimmer_iterator, 1); |
| 98 | static const enum bt_notification_type notif_types[] = { |
| 99 | BT_NOTIFICATION_TYPE_EVENT, |
| 100 | BT_NOTIFICATION_TYPE_STREAM_END, |
| 101 | BT_NOTIFICATION_TYPE_PACKET_BEGIN, |
| 102 | BT_NOTIFICATION_TYPE_PACKET_END, |
| 103 | BT_NOTIFICATION_TYPE_SENTINEL, |
| 104 | }; |
| 105 | |
| 106 | if (!it_data) { |
| 107 | ret = BT_NOTIFICATION_ITERATOR_STATUS_NOMEM; |
| 108 | goto end; |
| 109 | } |
| 110 | |
| 111 | /* Create a new iterator on the upstream component. */ |
| 112 | input_port = bt_private_component_filter_get_input_private_port_by_name( |
| 113 | component, "in"); |
| 114 | assert(input_port); |
| 115 | connection = bt_private_port_get_private_connection(input_port); |
| 116 | assert(connection); |
| 117 | |
| 118 | conn_status = bt_private_connection_create_notification_iterator(connection, |
| 119 | notif_types, &it_data->input_iterator); |
| 120 | if (conn_status != BT_CONNECTION_STATUS_OK) { |
| 121 | ret = BT_NOTIFICATION_ITERATOR_STATUS_ERROR; |
| 122 | goto end; |
| 123 | } |
| 124 | |
| 125 | it_data->err = stderr; |
| 126 | it_data->packet_map = g_hash_table_new_full(g_direct_hash, |
| 127 | g_direct_equal, NULL, NULL); |
| 128 | |
| 129 | it_ret = bt_private_connection_private_notification_iterator_set_user_data(iterator, |
| 130 | it_data); |
| 131 | if (it_ret) { |
| 132 | goto end; |
| 133 | } |
| 134 | end: |
| 135 | bt_put(component); |
| 136 | bt_put(connection); |
| 137 | bt_put(input_port); |
| 138 | return ret; |
| 139 | } |
| 140 | |
| 141 | static |
| 142 | int update_lazy_bound(struct trimmer_bound *bound, const char *name, |
| 143 | int64_t ts, bool *lazy_update) |
| 144 | { |
| 145 | struct tm tm; |
| 146 | int64_t value; |
| 147 | time_t timeval; |
| 148 | |
| 149 | *lazy_update = false; |
| 150 | |
| 151 | if (!bound->lazy) { |
| 152 | return 0; |
| 153 | } |
| 154 | tm.tm_isdst = -1; |
| 155 | timeval = ts / NSEC_PER_SEC; |
| 156 | |
| 157 | if (bound->lazy_values.gmt) { |
| 158 | /* Get day, month, year. */ |
| 159 | if (!bt_gmtime_r(&timeval, &tm)) { |
| 160 | BT_LOGE_STR("Failure in bt_gmtime_r()."); |
| 161 | goto error; |
| 162 | } |
| 163 | tm.tm_sec = bound->lazy_values.ss; |
| 164 | tm.tm_min = bound->lazy_values.mm; |
| 165 | tm.tm_hour = bound->lazy_values.hh; |
| 166 | timeval = bt_timegm(&tm); |
| 167 | if (timeval < 0) { |
| 168 | BT_LOGE("Failure in bt_timegm(), incorrectly formatted %s timestamp", |
| 169 | name); |
| 170 | goto error; |
| 171 | } |
| 172 | } else { |
| 173 | /* Get day, month, year. */ |
| 174 | if (!bt_localtime_r(&timeval, &tm)) { |
| 175 | BT_LOGE_STR("Failure in bt_localtime_r()."); |
| 176 | goto error; |
| 177 | } |
| 178 | tm.tm_sec = bound->lazy_values.ss; |
| 179 | tm.tm_min = bound->lazy_values.mm; |
| 180 | tm.tm_hour = bound->lazy_values.hh; |
| 181 | timeval = mktime(&tm); |
| 182 | if (timeval < 0) { |
| 183 | BT_LOGE("Failure in mktime(), incorrectly formatted %s timestamp", |
| 184 | name); |
| 185 | goto error; |
| 186 | } |
| 187 | } |
| 188 | value = (int64_t) timeval; |
| 189 | value *= NSEC_PER_SEC; |
| 190 | value += bound->lazy_values.ns; |
| 191 | bound->value = value; |
| 192 | bound->set = true; |
| 193 | bound->lazy = false; |
| 194 | *lazy_update = true; |
| 195 | return 0; |
| 196 | |
| 197 | error: |
| 198 | return -1; |
| 199 | } |
| 200 | |
| 201 | static |
| 202 | struct bt_notification *evaluate_event_notification( |
| 203 | struct bt_notification *notification, |
| 204 | struct trimmer_iterator *trim_it, |
| 205 | struct trimmer_bound *begin, struct trimmer_bound *end, |
| 206 | bool *_event_in_range, bool *finished) |
| 207 | { |
| 208 | int64_t ts; |
| 209 | int clock_ret; |
| 210 | struct bt_ctf_event *event = NULL, *writer_event; |
| 211 | bool in_range = true; |
| 212 | struct bt_ctf_clock_class *clock_class = NULL; |
| 213 | struct bt_ctf_trace *trace = NULL; |
| 214 | struct bt_ctf_stream *stream = NULL; |
| 215 | struct bt_ctf_stream_class *stream_class = NULL; |
| 216 | struct bt_ctf_clock_value *clock_value = NULL; |
| 217 | bool lazy_update = false; |
| 218 | struct bt_notification *new_notification = NULL; |
| 219 | struct bt_clock_class_priority_map *cc_prio_map; |
| 220 | |
| 221 | event = bt_notification_event_get_event(notification); |
| 222 | assert(event); |
| 223 | cc_prio_map = bt_notification_event_get_clock_class_priority_map( |
| 224 | notification); |
| 225 | assert(cc_prio_map); |
| 226 | writer_event = trimmer_output_event(trim_it, event); |
| 227 | assert(writer_event); |
| 228 | new_notification = bt_notification_event_create(writer_event, cc_prio_map); |
| 229 | assert(new_notification); |
| 230 | bt_put(cc_prio_map); |
| 231 | |
| 232 | stream = bt_ctf_event_get_stream(event); |
| 233 | assert(stream); |
| 234 | |
| 235 | stream_class = bt_ctf_stream_get_class(stream); |
| 236 | assert(stream_class); |
| 237 | |
| 238 | trace = bt_ctf_stream_class_get_trace(stream_class); |
| 239 | assert(trace); |
| 240 | |
| 241 | /* FIXME multi-clock? */ |
| 242 | clock_class = bt_ctf_trace_get_clock_class_by_index(trace, 0); |
| 243 | if (!clock_class) { |
| 244 | goto end; |
| 245 | } |
| 246 | |
| 247 | clock_value = bt_ctf_event_get_clock_value(event, clock_class); |
| 248 | if (!clock_value) { |
| 249 | BT_LOGE_STR("Failed to retrieve clock value."); |
| 250 | goto error; |
| 251 | } |
| 252 | |
| 253 | clock_ret = bt_ctf_clock_value_get_value_ns_from_epoch( |
| 254 | clock_value, &ts); |
| 255 | if (clock_ret) { |
| 256 | BT_LOGE_STR("Failed to retrieve clock value timestamp."); |
| 257 | goto error; |
| 258 | } |
| 259 | if (update_lazy_bound(begin, "begin", ts, &lazy_update)) { |
| 260 | goto end; |
| 261 | } |
| 262 | if (update_lazy_bound(end, "end", ts, &lazy_update)) { |
| 263 | goto end; |
| 264 | } |
| 265 | if (lazy_update && begin->set && end->set) { |
| 266 | if (begin->value > end->value) { |
| 267 | BT_LOGE_STR("Unexpected: time range begin value is above end value."); |
| 268 | goto error; |
| 269 | } |
| 270 | } |
| 271 | if (begin->set && ts < begin->value) { |
| 272 | in_range = false; |
| 273 | } |
| 274 | if (end->set && ts > end->value) { |
| 275 | in_range = false; |
| 276 | *finished = true; |
| 277 | } |
| 278 | |
| 279 | goto end; |
| 280 | |
| 281 | error: |
| 282 | BT_PUT(new_notification); |
| 283 | end: |
| 284 | bt_put(event); |
| 285 | bt_put(writer_event); |
| 286 | bt_put(clock_class); |
| 287 | bt_put(trace); |
| 288 | bt_put(stream); |
| 289 | bt_put(stream_class); |
| 290 | bt_put(clock_value); |
| 291 | *_event_in_range = in_range; |
| 292 | return new_notification; |
| 293 | } |
| 294 | |
| 295 | static |
| 296 | int ns_from_integer_field(struct bt_ctf_field *integer, int64_t *ns) |
| 297 | { |
| 298 | int ret = 0; |
| 299 | int is_signed; |
| 300 | uint64_t raw_clock_value; |
| 301 | struct bt_ctf_field_type *integer_type = NULL; |
| 302 | struct bt_ctf_clock_class *clock_class = NULL; |
| 303 | struct bt_ctf_clock_value *clock_value = NULL; |
| 304 | |
| 305 | integer_type = bt_ctf_field_get_type(integer); |
| 306 | assert(integer_type); |
| 307 | clock_class = bt_ctf_field_type_integer_get_mapped_clock_class( |
| 308 | integer_type); |
| 309 | if (!clock_class) { |
| 310 | ret = -1; |
| 311 | goto end; |
| 312 | } |
| 313 | |
| 314 | is_signed = bt_ctf_field_type_integer_get_signed(integer_type); |
| 315 | if (!is_signed) { |
| 316 | ret = bt_ctf_field_unsigned_integer_get_value(integer, |
| 317 | &raw_clock_value); |
| 318 | if (ret) { |
| 319 | goto end; |
| 320 | } |
| 321 | } else { |
| 322 | /* Signed clock values are unsupported. */ |
| 323 | ret = -1; |
| 324 | goto end; |
| 325 | } |
| 326 | |
| 327 | clock_value = bt_ctf_clock_value_create(clock_class, raw_clock_value); |
| 328 | if (!clock_value) { |
| 329 | goto end; |
| 330 | } |
| 331 | |
| 332 | ret = bt_ctf_clock_value_get_value_ns_from_epoch(clock_value, ns); |
| 333 | end: |
| 334 | bt_put(integer_type); |
| 335 | bt_put(clock_class); |
| 336 | bt_put(clock_value); |
| 337 | return ret; |
| 338 | } |
| 339 | |
| 340 | static uint64_t ns_from_value(uint64_t frequency, uint64_t value) |
| 341 | { |
| 342 | uint64_t ns; |
| 343 | |
| 344 | if (frequency == NSEC_PER_SEC) { |
| 345 | ns = value; |
| 346 | } else { |
| 347 | ns = (uint64_t) ((1e9 * (double) value) / (double) frequency); |
| 348 | } |
| 349 | |
| 350 | return ns; |
| 351 | } |
| 352 | |
| 353 | /* |
| 354 | * timestamp minus the offset. |
| 355 | */ |
| 356 | static |
| 357 | int64_t get_raw_timestamp(struct bt_ctf_packet *writer_packet, |
| 358 | int64_t timestamp) |
| 359 | { |
| 360 | struct bt_ctf_clock_class *writer_clock_class; |
| 361 | int64_t sec_offset, cycles_offset, ns; |
| 362 | struct bt_ctf_trace *writer_trace; |
| 363 | struct bt_ctf_stream *writer_stream; |
| 364 | struct bt_ctf_stream_class *writer_stream_class; |
| 365 | int ret; |
| 366 | uint64_t freq; |
| 367 | |
| 368 | writer_stream = bt_ctf_packet_get_stream(writer_packet); |
| 369 | assert(writer_stream); |
| 370 | |
| 371 | writer_stream_class = bt_ctf_stream_get_class(writer_stream); |
| 372 | assert(writer_stream_class); |
| 373 | |
| 374 | writer_trace = bt_ctf_stream_class_get_trace(writer_stream_class); |
| 375 | assert(writer_trace); |
| 376 | |
| 377 | /* FIXME multi-clock? */ |
| 378 | writer_clock_class = bt_ctf_trace_get_clock_class_by_index( |
| 379 | writer_trace, 0); |
| 380 | assert(writer_clock_class); |
| 381 | |
| 382 | ret = bt_ctf_clock_class_get_offset_s(writer_clock_class, &sec_offset); |
| 383 | assert(!ret); |
| 384 | ns = sec_offset * NSEC_PER_SEC; |
| 385 | |
| 386 | freq = bt_ctf_clock_class_get_frequency(writer_clock_class); |
| 387 | assert(freq != -1ULL); |
| 388 | |
| 389 | ret = bt_ctf_clock_class_get_offset_cycles(writer_clock_class, &cycles_offset); |
| 390 | assert(!ret); |
| 391 | |
| 392 | ns += ns_from_value(freq, cycles_offset); |
| 393 | |
| 394 | bt_put(writer_clock_class); |
| 395 | bt_put(writer_trace); |
| 396 | bt_put(writer_stream_class); |
| 397 | bt_put(writer_stream); |
| 398 | |
| 399 | return timestamp - ns; |
| 400 | } |
| 401 | |
| 402 | static |
| 403 | struct bt_notification *evaluate_packet_notification( |
| 404 | struct bt_notification *notification, |
| 405 | struct trimmer_iterator *trim_it, |
| 406 | struct trimmer_bound *begin, struct trimmer_bound *end, |
| 407 | bool *_packet_in_range, bool *finished) |
| 408 | { |
| 409 | int64_t begin_ns, pkt_begin_ns, end_ns, pkt_end_ns; |
| 410 | bool in_range = true; |
| 411 | struct bt_ctf_packet *packet = NULL, *writer_packet = NULL; |
| 412 | struct bt_ctf_field *packet_context = NULL, |
| 413 | *timestamp_begin = NULL, |
| 414 | *timestamp_end = NULL; |
| 415 | struct bt_notification *new_notification = NULL; |
| 416 | enum bt_component_status ret; |
| 417 | bool lazy_update = false; |
| 418 | |
| 419 | switch (bt_notification_get_type(notification)) { |
| 420 | case BT_NOTIFICATION_TYPE_PACKET_BEGIN: |
| 421 | packet = bt_notification_packet_begin_get_packet(notification); |
| 422 | assert(packet); |
| 423 | writer_packet = trimmer_new_packet(trim_it, packet); |
| 424 | assert(writer_packet); |
| 425 | break; |
| 426 | case BT_NOTIFICATION_TYPE_PACKET_END: |
| 427 | packet = bt_notification_packet_end_get_packet(notification); |
| 428 | assert(packet); |
| 429 | writer_packet = trimmer_close_packet(trim_it, packet); |
| 430 | assert(writer_packet); |
| 431 | break; |
| 432 | default: |
| 433 | goto end; |
| 434 | } |
| 435 | |
| 436 | packet_context = bt_ctf_packet_get_context(writer_packet); |
| 437 | if (!packet_context) { |
| 438 | goto end_no_notif; |
| 439 | } |
| 440 | |
| 441 | if (!bt_ctf_field_is_structure(packet_context)) { |
| 442 | goto end_no_notif; |
| 443 | } |
| 444 | |
| 445 | timestamp_begin = bt_ctf_field_structure_get_field( |
| 446 | packet_context, "timestamp_begin"); |
| 447 | if (!timestamp_begin || !bt_ctf_field_is_integer(timestamp_begin)) { |
| 448 | goto end_no_notif; |
| 449 | } |
| 450 | timestamp_end = bt_ctf_field_structure_get_field( |
| 451 | packet_context, "timestamp_end"); |
| 452 | if (!timestamp_end || !bt_ctf_field_is_integer(timestamp_end)) { |
| 453 | goto end_no_notif; |
| 454 | } |
| 455 | |
| 456 | if (ns_from_integer_field(timestamp_begin, &pkt_begin_ns)) { |
| 457 | goto end_no_notif; |
| 458 | } |
| 459 | if (ns_from_integer_field(timestamp_end, &pkt_end_ns)) { |
| 460 | goto end_no_notif; |
| 461 | } |
| 462 | |
| 463 | if (update_lazy_bound(begin, "begin", pkt_begin_ns, &lazy_update)) { |
| 464 | goto end_no_notif; |
| 465 | } |
| 466 | if (update_lazy_bound(end, "end", pkt_end_ns, &lazy_update)) { |
| 467 | goto end_no_notif; |
| 468 | } |
| 469 | if (lazy_update && begin->set && end->set) { |
| 470 | if (begin->value > end->value) { |
| 471 | BT_LOGE_STR("Unexpected: time range begin value is above end value."); |
| 472 | goto end_no_notif; |
| 473 | } |
| 474 | } |
| 475 | |
| 476 | begin_ns = begin->set ? begin->value : INT64_MIN; |
| 477 | end_ns = end->set ? end->value : INT64_MAX; |
| 478 | |
| 479 | /* |
| 480 | * Accept if there is any overlap between the selected region and the |
| 481 | * packet. |
| 482 | */ |
| 483 | in_range = (pkt_end_ns >= begin_ns) && (pkt_begin_ns <= end_ns); |
| 484 | if (!in_range) { |
| 485 | goto end_no_notif; |
| 486 | } |
| 487 | if (pkt_begin_ns > end_ns) { |
| 488 | *finished = true; |
| 489 | } |
| 490 | |
| 491 | if (begin_ns > pkt_begin_ns) { |
| 492 | ret = update_packet_context_field(trim_it->err, writer_packet, |
| 493 | "timestamp_begin", |
| 494 | get_raw_timestamp(writer_packet, begin_ns)); |
| 495 | assert(!ret); |
| 496 | } |
| 497 | |
| 498 | if (end_ns < pkt_end_ns) { |
| 499 | ret = update_packet_context_field(trim_it->err, writer_packet, |
| 500 | "timestamp_end", |
| 501 | get_raw_timestamp(writer_packet, end_ns)); |
| 502 | assert(!ret); |
| 503 | } |
| 504 | |
| 505 | end: |
| 506 | switch (bt_notification_get_type(notification)) { |
| 507 | case BT_NOTIFICATION_TYPE_PACKET_BEGIN: |
| 508 | new_notification = bt_notification_packet_begin_create(writer_packet); |
| 509 | assert(new_notification); |
| 510 | break; |
| 511 | case BT_NOTIFICATION_TYPE_PACKET_END: |
| 512 | new_notification = bt_notification_packet_end_create(writer_packet); |
| 513 | assert(new_notification); |
| 514 | break; |
| 515 | default: |
| 516 | break; |
| 517 | } |
| 518 | end_no_notif: |
| 519 | *_packet_in_range = in_range; |
| 520 | bt_put(packet); |
| 521 | bt_put(writer_packet); |
| 522 | bt_put(packet_context); |
| 523 | bt_put(timestamp_begin); |
| 524 | bt_put(timestamp_end); |
| 525 | return new_notification; |
| 526 | } |
| 527 | |
| 528 | static |
| 529 | struct bt_notification *evaluate_stream_notification( |
| 530 | struct bt_notification *notification, |
| 531 | struct trimmer_iterator *trim_it) |
| 532 | { |
| 533 | struct bt_ctf_stream *stream; |
| 534 | |
| 535 | stream = bt_notification_stream_end_get_stream(notification); |
| 536 | assert(stream); |
| 537 | |
| 538 | /* FIXME: useless copy */ |
| 539 | return bt_notification_stream_end_create(stream); |
| 540 | } |
| 541 | |
| 542 | /* Return true if the notification should be forwarded. */ |
| 543 | static |
| 544 | enum bt_notification_iterator_status evaluate_notification( |
| 545 | struct bt_notification **notification, |
| 546 | struct trimmer_iterator *trim_it, |
| 547 | struct trimmer_bound *begin, struct trimmer_bound *end, |
| 548 | bool *in_range) |
| 549 | { |
| 550 | enum bt_notification_type type; |
| 551 | struct bt_notification *new_notification = NULL; |
| 552 | bool finished = false; |
| 553 | |
| 554 | *in_range = true; |
| 555 | type = bt_notification_get_type(*notification); |
| 556 | switch (type) { |
| 557 | case BT_NOTIFICATION_TYPE_EVENT: |
| 558 | new_notification = evaluate_event_notification(*notification, |
| 559 | trim_it, begin, end, in_range, &finished); |
| 560 | break; |
| 561 | case BT_NOTIFICATION_TYPE_PACKET_BEGIN: |
| 562 | case BT_NOTIFICATION_TYPE_PACKET_END: |
| 563 | new_notification = evaluate_packet_notification(*notification, |
| 564 | trim_it, begin, end, in_range, &finished); |
| 565 | break; |
| 566 | case BT_NOTIFICATION_TYPE_STREAM_END: |
| 567 | new_notification = evaluate_stream_notification(*notification, |
| 568 | trim_it); |
| 569 | break; |
| 570 | default: |
| 571 | puts("Unhandled notification type"); |
| 572 | break; |
| 573 | } |
| 574 | BT_PUT(*notification); |
| 575 | *notification = new_notification; |
| 576 | |
| 577 | if (finished) { |
| 578 | return BT_NOTIFICATION_ITERATOR_STATUS_END; |
| 579 | } |
| 580 | |
| 581 | return BT_NOTIFICATION_ITERATOR_STATUS_OK; |
| 582 | } |
| 583 | |
| 584 | BT_HIDDEN |
| 585 | struct bt_notification_iterator_next_method_return trimmer_iterator_next( |
| 586 | struct bt_private_connection_private_notification_iterator *iterator) |
| 587 | { |
| 588 | struct trimmer_iterator *trim_it = NULL; |
| 589 | struct bt_private_component *component = NULL; |
| 590 | struct trimmer *trimmer = NULL; |
| 591 | struct bt_notification_iterator *source_it = NULL; |
| 592 | struct bt_notification_iterator_next_method_return ret = { |
| 593 | .status = BT_NOTIFICATION_ITERATOR_STATUS_OK, |
| 594 | .notification = NULL, |
| 595 | }; |
| 596 | bool notification_in_range = false; |
| 597 | |
| 598 | trim_it = bt_private_connection_private_notification_iterator_get_user_data(iterator); |
| 599 | assert(trim_it); |
| 600 | |
| 601 | component = bt_private_connection_private_notification_iterator_get_private_component( |
| 602 | iterator); |
| 603 | assert(component); |
| 604 | trimmer = bt_private_component_get_user_data(component); |
| 605 | assert(trimmer); |
| 606 | |
| 607 | source_it = trim_it->input_iterator; |
| 608 | assert(source_it); |
| 609 | |
| 610 | while (!notification_in_range) { |
| 611 | ret.status = bt_notification_iterator_next(source_it); |
| 612 | if (ret.status != BT_NOTIFICATION_ITERATOR_STATUS_OK) { |
| 613 | goto end; |
| 614 | } |
| 615 | |
| 616 | ret.notification = bt_notification_iterator_get_notification( |
| 617 | source_it); |
| 618 | if (!ret.notification) { |
| 619 | ret.status = BT_NOTIFICATION_ITERATOR_STATUS_ERROR; |
| 620 | goto end; |
| 621 | } |
| 622 | |
| 623 | ret.status = evaluate_notification(&ret.notification, trim_it, |
| 624 | &trimmer->begin, &trimmer->end, |
| 625 | ¬ification_in_range); |
| 626 | if (!notification_in_range) { |
| 627 | BT_PUT(ret.notification); |
| 628 | } |
| 629 | |
| 630 | if (ret.status != BT_NOTIFICATION_ITERATOR_STATUS_OK) { |
| 631 | break; |
| 632 | } |
| 633 | } |
| 634 | end: |
| 635 | bt_put(component); |
| 636 | return ret; |
| 637 | } |