1 /* 2 * Copyright (C) 2016 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS 24 * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 #define BTSTACK_FILE__ "avdtp_util.c" 39 40 41 #include <stdint.h> 42 #include <stdio.h> 43 #include <stdlib.h> 44 #include <string.h> 45 46 #include "btstack.h" 47 #include "avdtp.h" 48 #include "avdtp_util.h" 49 50 #define MAX_MEDIA_CODEC_INFORMATION_LENGTH 100 51 52 static const char * avdtp_si_name[] = { 53 "ERROR", 54 "AVDTP_SI_DISCOVER", 55 "AVDTP_SI_GET_CAPABILITIES", 56 "AVDTP_SI_SET_CONFIGURATION", 57 "AVDTP_SI_GET_CONFIGURATION", 58 "AVDTP_SI_RECONFIGURE", 59 "AVDTP_SI_OPEN", 60 "AVDTP_SI_START", 61 "AVDTP_SI_CLOSE", 62 "AVDTP_SI_SUSPEND", 63 "AVDTP_SI_ABORT", 64 "AVDTP_SI_SECURITY_CONTROL", 65 "AVDTP_SI_GET_ALL_CAPABILITIES", 66 "AVDTP_SI_DELAY_REPORT" 67 }; 68 const char * avdtp_si2str(uint16_t index){ 69 if ((index <= 0) || (index > sizeof(avdtp_si_name))) return avdtp_si_name[0]; 70 return avdtp_si_name[index]; 71 } 72 73 void avdtp_reset_stream_endpoint(avdtp_stream_endpoint_t * stream_endpoint){ 74 stream_endpoint->media_con_handle = 0; 75 stream_endpoint->l2cap_media_cid = 0; 76 stream_endpoint->l2cap_reporting_cid = 0; 77 stream_endpoint->l2cap_recovery_cid = 0; 78 79 stream_endpoint->connection = NULL; 80 stream_endpoint->state = AVDTP_STREAM_ENDPOINT_IDLE; 81 stream_endpoint->acceptor_config_state = AVDTP_ACCEPTOR_STREAM_CONFIG_IDLE; 82 stream_endpoint->initiator_config_state = AVDTP_INITIATOR_STREAM_CONFIG_IDLE; 83 84 stream_endpoint->sep.in_use = 0; 85 memset(&stream_endpoint->remote_sep, 0, sizeof(avdtp_sep_t)); 86 // memset(&stream_endpoint->remote_capabilities, 0, sizeof(avdtp_capabilities_t)); 87 // memset(&stream_endpoint->remote_configuration, 0, sizeof(avdtp_capabilities_t)); 88 89 stream_endpoint->remote_capabilities_bitmap = 0; 90 stream_endpoint->remote_configuration_bitmap = 0; 91 92 stream_endpoint->media_disconnect = 0; 93 stream_endpoint->media_connect = 0; 94 stream_endpoint->start_stream = 0; 95 stream_endpoint->stop_stream = 0; 96 stream_endpoint->send_stream = 0; 97 stream_endpoint->abort_stream = 0; 98 stream_endpoint->suspend_stream = 0; 99 stream_endpoint->sequence_number = 0; 100 } 101 102 avdtp_stream_endpoint_t * avdtp_stream_endpoint_for_seid(uint16_t seid, avdtp_context_t * context){ 103 btstack_linked_list_iterator_t it; 104 btstack_linked_list_iterator_init(&it, &context->stream_endpoints); 105 while (btstack_linked_list_iterator_has_next(&it)){ 106 avdtp_stream_endpoint_t * stream_endpoint = (avdtp_stream_endpoint_t *)btstack_linked_list_iterator_next(&it); 107 if (stream_endpoint->sep.seid == seid){ 108 return stream_endpoint; 109 } 110 } 111 return NULL; 112 } 113 114 avdtp_connection_t * avdtp_connection_for_bd_addr(bd_addr_t addr, avdtp_context_t * context){ 115 btstack_linked_list_iterator_t it; 116 btstack_linked_list_iterator_init(&it, &context->connections); 117 while (btstack_linked_list_iterator_has_next(&it)){ 118 avdtp_connection_t * connection = (avdtp_connection_t *)btstack_linked_list_iterator_next(&it); 119 if (memcmp(addr, connection->remote_addr, 6) != 0) continue; 120 return connection; 121 } 122 return NULL; 123 } 124 125 avdtp_connection_t * avdtp_connection_for_avdtp_cid(uint16_t avdtp_cid, avdtp_context_t * context){ 126 btstack_linked_list_iterator_t it; 127 btstack_linked_list_iterator_init(&it, &context->connections); 128 while (btstack_linked_list_iterator_has_next(&it)){ 129 avdtp_connection_t * connection = (avdtp_connection_t *)btstack_linked_list_iterator_next(&it); 130 if (connection->avdtp_cid != avdtp_cid) continue; 131 return connection; 132 } 133 return NULL; 134 } 135 136 avdtp_connection_t * avdtp_connection_for_l2cap_signaling_cid(uint16_t l2cap_cid, avdtp_context_t * context){ 137 btstack_linked_list_iterator_t it; 138 btstack_linked_list_iterator_init(&it, &context->connections); 139 while (btstack_linked_list_iterator_has_next(&it)){ 140 avdtp_connection_t * connection = (avdtp_connection_t *)btstack_linked_list_iterator_next(&it); 141 if (connection->l2cap_signaling_cid != l2cap_cid) continue; 142 return connection; 143 } 144 return NULL; 145 } 146 147 avdtp_stream_endpoint_t * avdtp_stream_endpoint_for_l2cap_cid(uint16_t l2cap_cid, avdtp_context_t * context){ 148 btstack_linked_list_iterator_t it; 149 btstack_linked_list_iterator_init(&it, &context->stream_endpoints); 150 while (btstack_linked_list_iterator_has_next(&it)){ 151 avdtp_stream_endpoint_t * stream_endpoint = (avdtp_stream_endpoint_t *)btstack_linked_list_iterator_next(&it); 152 if (stream_endpoint->l2cap_media_cid == l2cap_cid){ 153 return stream_endpoint; 154 } 155 if (stream_endpoint->l2cap_reporting_cid == l2cap_cid){ 156 return stream_endpoint; 157 } 158 if (stream_endpoint->l2cap_recovery_cid == l2cap_cid){ 159 return stream_endpoint; 160 } 161 } 162 return NULL; 163 } 164 165 avdtp_stream_endpoint_t * avdtp_stream_endpoint_for_signaling_cid(uint16_t l2cap_cid, avdtp_context_t * context){ 166 btstack_linked_list_iterator_t it; 167 btstack_linked_list_iterator_init(&it, &context->stream_endpoints); 168 while (btstack_linked_list_iterator_has_next(&it)){ 169 avdtp_stream_endpoint_t * stream_endpoint = (avdtp_stream_endpoint_t *)btstack_linked_list_iterator_next(&it); 170 if (stream_endpoint->connection){ 171 if (stream_endpoint->connection->l2cap_signaling_cid == l2cap_cid){ 172 return stream_endpoint; 173 } 174 } 175 } 176 return NULL; 177 } 178 179 avdtp_stream_endpoint_t * avdtp_stream_endpoint_with_seid(uint8_t seid, avdtp_context_t * context){ 180 btstack_linked_list_iterator_t it; 181 btstack_linked_list_iterator_init(&it, &context->stream_endpoints); 182 while (btstack_linked_list_iterator_has_next(&it)){ 183 avdtp_stream_endpoint_t * stream_endpoint = (avdtp_stream_endpoint_t *)btstack_linked_list_iterator_next(&it); 184 if (stream_endpoint->sep.seid == seid){ 185 return stream_endpoint; 186 } 187 } 188 return NULL; 189 } 190 191 avdtp_stream_endpoint_t * avdtp_stream_endpoint_associated_with_acp_seid(uint16_t acp_seid, avdtp_context_t * context){ 192 btstack_linked_list_iterator_t it; 193 btstack_linked_list_iterator_init(&it, &context->stream_endpoints); 194 while (btstack_linked_list_iterator_has_next(&it)){ 195 avdtp_stream_endpoint_t * stream_endpoint = (avdtp_stream_endpoint_t *)btstack_linked_list_iterator_next(&it); 196 if (stream_endpoint->remote_sep.seid == acp_seid){ 197 return stream_endpoint; 198 } 199 } 200 return NULL; 201 } 202 203 int get_bit16(uint16_t bitmap, int position){ 204 return (bitmap >> position) & 1; 205 } 206 207 uint16_t store_bit16(uint16_t bitmap, int position, uint8_t value){ 208 if (value){ 209 bitmap |= 1 << position; 210 } else { 211 bitmap &= ~ (1 << position); 212 } 213 return bitmap; 214 } 215 216 avdtp_message_type_t avdtp_get_signaling_packet_type(uint8_t * packet){ 217 return (avdtp_message_type_t) (packet[0] & 0x03); 218 } 219 220 int avdtp_read_signaling_header(avdtp_signaling_packet_t * signaling_header, uint8_t * packet, uint16_t size){ 221 int pos = 0; 222 if (size < 2) return pos; 223 signaling_header->transaction_label = packet[pos] >> 4; 224 signaling_header->packet_type = (avdtp_packet_type_t)((packet[pos] >> 2) & 0x03); 225 signaling_header->message_type = (avdtp_message_type_t) (packet[pos] & 0x03); 226 pos++; 227 memset(signaling_header->command, 0, sizeof(signaling_header->command)); 228 switch (signaling_header->packet_type){ 229 case AVDTP_SINGLE_PACKET: 230 signaling_header->num_packets = 0; 231 signaling_header->offset = 0; 232 signaling_header->size = 0; 233 break; 234 case AVDTP_END_PACKET: 235 signaling_header->num_packets = 0; 236 break; 237 case AVDTP_START_PACKET: 238 signaling_header->num_packets = packet[pos++]; 239 signaling_header->size = 0; 240 signaling_header->offset = 0; 241 break; 242 case AVDTP_CONTINUE_PACKET: 243 if (signaling_header->num_packets <= 0) { 244 log_info(" ERROR: wrong num fragmented packets\n"); 245 break; 246 } 247 signaling_header->num_packets--; 248 break; 249 } 250 signaling_header->signal_identifier = (avdtp_signal_identifier_t)(packet[pos++] & 0x3f); 251 return pos; 252 } 253 254 int avdtp_pack_service_capabilities(uint8_t * buffer, int size, avdtp_capabilities_t caps, avdtp_service_category_t category, uint8_t pack_all_capabilities){ 255 UNUSED(size); 256 257 int i; 258 // pos = 0 reserved for length 259 int pos = 1; 260 switch(category){ 261 case AVDTP_MEDIA_TRANSPORT: 262 case AVDTP_REPORTING: 263 break; 264 case AVDTP_DELAY_REPORTING: 265 if (!pack_all_capabilities) break; 266 break; 267 case AVDTP_RECOVERY: 268 buffer[pos++] = caps.recovery.recovery_type; // 0x01=RFC2733 269 buffer[pos++] = caps.recovery.maximum_recovery_window_size; 270 buffer[pos++] = caps.recovery.maximum_number_media_packets; 271 break; 272 case AVDTP_CONTENT_PROTECTION: 273 buffer[pos++] = caps.content_protection.cp_type_value_len + 2; 274 big_endian_store_16(buffer, pos, caps.content_protection.cp_type); 275 pos += 2; 276 (void)memcpy(buffer + pos, caps.content_protection.cp_type_value, 277 caps.content_protection.cp_type_value_len); 278 break; 279 case AVDTP_HEADER_COMPRESSION: 280 buffer[pos++] = (caps.header_compression.back_ch << 7) | (caps.header_compression.media << 6) | (caps.header_compression.recovery << 5); 281 break; 282 case AVDTP_MULTIPLEXING: 283 buffer[pos++] = caps.multiplexing_mode.fragmentation << 7; 284 for (i=0; i<caps.multiplexing_mode.transport_identifiers_num; i++){ 285 buffer[pos++] = caps.multiplexing_mode.transport_session_identifiers[i] << 7; 286 buffer[pos++] = caps.multiplexing_mode.tcid[i] << 7; 287 // media, reporting. recovery 288 } 289 break; 290 case AVDTP_MEDIA_CODEC: 291 buffer[pos++] = ((uint8_t)caps.media_codec.media_type) << 4; 292 buffer[pos++] = (uint8_t)caps.media_codec.media_codec_type; 293 for (i = 0; i<caps.media_codec.media_codec_information_len; i++){ 294 buffer[pos++] = caps.media_codec.media_codec_information[i]; 295 } 296 break; 297 default: 298 break; 299 } 300 buffer[0] = pos - 1; // length 301 return pos; 302 } 303 304 static int avdtp_unpack_service_capabilities_has_errors(avdtp_connection_t * connection, avdtp_signal_identifier_t signal_identifier, avdtp_service_category_t category, uint8_t cap_len){ 305 connection->error_code = 0; 306 307 if ((category == AVDTP_SERVICE_CATEGORY_INVALID_0) || 308 ((category == AVDTP_SERVICE_CATEGORY_INVALID_FF) && (signal_identifier == AVDTP_SI_RECONFIGURE))){ 309 log_info(" ERROR: BAD SERVICE CATEGORY %d\n", category); 310 connection->reject_service_category = category; 311 connection->error_code = BAD_SERV_CATEGORY; 312 return 1; 313 } 314 315 if (signal_identifier == AVDTP_SI_RECONFIGURE){ 316 if ( (category != AVDTP_CONTENT_PROTECTION) && (category != AVDTP_MEDIA_CODEC)){ 317 log_info(" ERROR: REJECT CATEGORY, INVALID_CAPABILITIES\n"); 318 connection->reject_service_category = category; 319 connection->error_code = INVALID_CAPABILITIES; 320 return 1; 321 } 322 } 323 324 switch(category){ 325 case AVDTP_MEDIA_TRANSPORT: 326 if (cap_len != 0){ 327 log_info(" ERROR: REJECT CATEGORY, BAD_MEDIA_TRANSPORT\n"); 328 connection->reject_service_category = category; 329 connection->error_code = BAD_MEDIA_TRANSPORT_FORMAT; 330 return 1; 331 } 332 break; 333 case AVDTP_REPORTING: 334 case AVDTP_DELAY_REPORTING: 335 if (cap_len != 0){ 336 log_info(" ERROR: REJECT CATEGORY, BAD_LENGTH\n"); 337 connection->reject_service_category = category; 338 connection->error_code = BAD_LENGTH; 339 return 1; 340 } 341 break; 342 case AVDTP_RECOVERY: 343 if (cap_len != 3){ 344 log_info(" ERROR: REJECT CATEGORY, BAD_MEDIA_TRANSPORT\n"); 345 connection->reject_service_category = category; 346 connection->error_code = BAD_RECOVERY_FORMAT; 347 return 1; 348 } 349 break; 350 case AVDTP_CONTENT_PROTECTION: 351 if (cap_len < 2){ 352 log_info(" ERROR: REJECT CATEGORY, BAD_CP_FORMAT\n"); 353 connection->reject_service_category = category; 354 connection->error_code = BAD_CP_FORMAT; 355 return 1; 356 } 357 break; 358 case AVDTP_HEADER_COMPRESSION: 359 // TODO: find error code for bad header compression 360 if (cap_len != 1){ 361 log_info(" ERROR: REJECT CATEGORY, BAD_HEADER_COMPRESSION\n"); 362 connection->reject_service_category = category; 363 connection->error_code = BAD_RECOVERY_FORMAT; 364 return 1; 365 } 366 break; 367 case AVDTP_MULTIPLEXING: 368 break; 369 case AVDTP_MEDIA_CODEC: 370 break; 371 default: 372 break; 373 } 374 return 0; 375 } 376 377 uint16_t avdtp_unpack_service_capabilities(avdtp_connection_t * connection, avdtp_signal_identifier_t signal_identifier, avdtp_capabilities_t * caps, uint8_t * packet, uint16_t size){ 378 379 int i; 380 381 uint16_t registered_service_categories = 0; 382 uint16_t to_process = size; 383 384 while (to_process >= 2){ 385 386 avdtp_service_category_t category = (avdtp_service_category_t) packet[0]; 387 uint8_t cap_len = packet[1]; 388 packet += 2; 389 to_process -= 2; 390 391 if (cap_len > to_process){ 392 connection->reject_service_category = category; 393 connection->error_code = BAD_LENGTH; 394 return 0; 395 } 396 397 if (avdtp_unpack_service_capabilities_has_errors(connection, signal_identifier, category, cap_len)) return 0; 398 399 int category_valid = 1; 400 401 uint8_t * data = packet; 402 uint16_t pos = 0; 403 404 switch(category){ 405 case AVDTP_RECOVERY: 406 caps->recovery.recovery_type = data[pos++]; 407 caps->recovery.maximum_recovery_window_size = data[pos++]; 408 caps->recovery.maximum_number_media_packets = data[pos++]; 409 break; 410 case AVDTP_CONTENT_PROTECTION: 411 caps->content_protection.cp_type = big_endian_read_16(data, 0); 412 caps->content_protection.cp_type_value_len = cap_len - 2; 413 // connection->reject_service_category = category; 414 // connection->error_code = UNSUPPORTED_CONFIGURATION; 415 // support for content protection goes here 416 break; 417 case AVDTP_HEADER_COMPRESSION: 418 caps->header_compression.back_ch = (data[0] >> 7) & 1; 419 caps->header_compression.media = (data[0] >> 6) & 1; 420 caps->header_compression.recovery = (data[0] >> 5) & 1; 421 break; 422 case AVDTP_MULTIPLEXING: 423 caps->multiplexing_mode.fragmentation = (data[pos++] >> 7) & 1; 424 // read [tsid, tcid] for media, reporting. recovery respectively 425 caps->multiplexing_mode.transport_identifiers_num = 3; 426 for (i=0; i<caps->multiplexing_mode.transport_identifiers_num; i++){ 427 caps->multiplexing_mode.transport_session_identifiers[i] = (data[pos++] >> 7) & 1; 428 caps->multiplexing_mode.tcid[i] = (data[pos++] >> 7) & 1; 429 } 430 break; 431 case AVDTP_MEDIA_CODEC: 432 caps->media_codec.media_type = (avdtp_media_type_t)(data[pos++] >> 4); 433 caps->media_codec.media_codec_type = (avdtp_media_codec_type_t)(data[pos++]); 434 caps->media_codec.media_codec_information_len = cap_len - 2; 435 caps->media_codec.media_codec_information = &data[pos++]; 436 break; 437 case AVDTP_MEDIA_TRANSPORT: 438 case AVDTP_REPORTING: 439 case AVDTP_DELAY_REPORTING: 440 break; 441 default: 442 category_valid = 0; 443 break; 444 } 445 446 if (category_valid) { 447 registered_service_categories = store_bit16(registered_service_categories, category, 1); 448 } 449 450 packet += cap_len; 451 to_process -= cap_len; 452 } 453 454 return registered_service_categories; 455 } 456 457 void avdtp_prepare_capabilities(avdtp_signaling_packet_t * signaling_packet, uint8_t transaction_label, uint16_t registered_service_categories, avdtp_capabilities_t capabilities, uint8_t identifier){ 458 if (signaling_packet->offset) return; 459 uint8_t pack_all_capabilities = 1; 460 signaling_packet->message_type = AVDTP_RESPONSE_ACCEPT_MSG; 461 int i; 462 463 signaling_packet->size = 0; 464 memset(signaling_packet->command, 0 , sizeof(signaling_packet->command)); 465 466 467 switch (identifier) { 468 case AVDTP_SI_GET_CAPABILITIES: 469 pack_all_capabilities = 0; 470 break; 471 case AVDTP_SI_GET_ALL_CAPABILITIES: 472 pack_all_capabilities = 1; 473 break; 474 case AVDTP_SI_SET_CONFIGURATION: 475 signaling_packet->command[signaling_packet->size++] = signaling_packet->acp_seid << 2; 476 signaling_packet->command[signaling_packet->size++] = signaling_packet->int_seid << 2; 477 signaling_packet->message_type = AVDTP_CMD_MSG; 478 break; 479 case AVDTP_SI_RECONFIGURE: 480 signaling_packet->command[signaling_packet->size++] = signaling_packet->acp_seid << 2; 481 signaling_packet->message_type = AVDTP_CMD_MSG; 482 break; 483 default: 484 log_error("avdtp_prepare_capabilities wrong identifier %d", identifier); 485 break; 486 } 487 488 for (i = 1; i < 9; i++){ 489 int registered_category = get_bit16(registered_service_categories, i); 490 if (!registered_category && (identifier == AVDTP_SI_SET_CONFIGURATION)){ 491 // TODO: introduce bitmap of mandatory categories 492 if (i == 1){ 493 registered_category = 1; 494 } 495 } 496 if (registered_category){ 497 // service category 498 signaling_packet->command[signaling_packet->size++] = i; 499 signaling_packet->size += avdtp_pack_service_capabilities(signaling_packet->command+signaling_packet->size, sizeof(signaling_packet->command)-signaling_packet->size, capabilities, (avdtp_service_category_t)i, pack_all_capabilities); 500 } 501 } 502 signaling_packet->signal_identifier = (avdtp_signal_identifier_t)identifier; 503 signaling_packet->transaction_label = transaction_label; 504 } 505 506 int avdtp_signaling_create_fragment(uint16_t cid, avdtp_signaling_packet_t * signaling_packet, uint8_t * out_buffer) { 507 int mtu = l2cap_get_remote_mtu_for_local_cid(cid); 508 int data_len = 0; 509 510 uint16_t offset = signaling_packet->offset; 511 uint16_t pos = 1; 512 513 if (offset == 0){ 514 if (signaling_packet->size <= (mtu - 2)){ 515 signaling_packet->packet_type = AVDTP_SINGLE_PACKET; 516 out_buffer[pos++] = signaling_packet->signal_identifier; 517 data_len = signaling_packet->size; 518 } else { 519 signaling_packet->packet_type = AVDTP_START_PACKET; 520 out_buffer[pos++] = (mtu + signaling_packet->size)/ (mtu-1); 521 out_buffer[pos++] = signaling_packet->signal_identifier; 522 data_len = mtu - 3; 523 signaling_packet->offset = data_len; 524 } 525 } else { 526 int remaining_bytes = signaling_packet->size - offset; 527 if (remaining_bytes <= (mtu - 1)){ 528 signaling_packet->packet_type = AVDTP_END_PACKET; 529 data_len = remaining_bytes; 530 signaling_packet->offset = 0; 531 } else{ 532 signaling_packet->packet_type = AVDTP_CONTINUE_PACKET; 533 data_len = mtu - 1; 534 signaling_packet->offset += data_len; 535 } 536 } 537 out_buffer[0] = avdtp_header(signaling_packet->transaction_label, signaling_packet->packet_type, signaling_packet->message_type); 538 (void)memcpy(out_buffer + pos, signaling_packet->command + offset, 539 data_len); 540 pos += data_len; 541 return pos; 542 } 543 544 545 void avdtp_signaling_emit_connection_established(btstack_packet_handler_t callback, uint16_t avdtp_cid, bd_addr_t addr, uint8_t status){ 546 if (!callback) return; 547 uint8_t event[12]; 548 int pos = 0; 549 event[pos++] = HCI_EVENT_AVDTP_META; 550 event[pos++] = sizeof(event) - 2; 551 event[pos++] = AVDTP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED; 552 little_endian_store_16(event, pos, avdtp_cid); 553 pos += 2; 554 reverse_bd_addr(addr,&event[pos]); 555 pos += 6; 556 event[pos++] = status; 557 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 558 } 559 560 void avdtp_streaming_emit_can_send_media_packet_now(btstack_packet_handler_t callback, uint16_t avdtp_cid, uint8_t seid, uint16_t sequence_number){ 561 if (!callback) return; 562 uint8_t event[8]; 563 int pos = 0; 564 event[pos++] = HCI_EVENT_AVDTP_META; 565 event[pos++] = sizeof(event) - 2; 566 event[pos++] = AVDTP_SUBEVENT_STREAMING_CAN_SEND_MEDIA_PACKET_NOW; 567 little_endian_store_16(event, pos, avdtp_cid); 568 pos += 2; 569 event[pos++] = seid; 570 little_endian_store_16(event, pos, sequence_number); 571 pos += 2; 572 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 573 } 574 575 void avdtp_signaling_emit_connection_released(btstack_packet_handler_t callback, uint16_t avdtp_cid){ 576 if (!callback) return; 577 uint8_t event[5]; 578 int pos = 0; 579 event[pos++] = HCI_EVENT_AVDTP_META; 580 event[pos++] = sizeof(event) - 2; 581 event[pos++] = AVDTP_SUBEVENT_SIGNALING_CONNECTION_RELEASED; 582 little_endian_store_16(event, pos, avdtp_cid); 583 pos += 2; 584 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 585 } 586 587 void avdtp_streaming_emit_connection_released(btstack_packet_handler_t callback, uint16_t avdtp_cid, uint8_t local_seid){ 588 if (!callback) return; 589 uint8_t event[6]; 590 int pos = 0; 591 event[pos++] = HCI_EVENT_AVDTP_META; 592 event[pos++] = sizeof(event) - 2; 593 event[pos++] = AVDTP_SUBEVENT_STREAMING_CONNECTION_RELEASED; 594 little_endian_store_16(event, pos, avdtp_cid); 595 pos += 2; 596 event[pos++] = local_seid; 597 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 598 } 599 600 void avdtp_streaming_emit_connection_established(btstack_packet_handler_t callback, uint16_t avdtp_cid, bd_addr_t addr, uint8_t local_seid, uint8_t remote_seid, uint8_t status){ 601 if (!callback) return; 602 uint8_t event[14]; 603 int pos = 0; 604 event[pos++] = HCI_EVENT_AVDTP_META; 605 event[pos++] = sizeof(event) - 2; 606 event[pos++] = AVDTP_SUBEVENT_STREAMING_CONNECTION_ESTABLISHED; 607 little_endian_store_16(event, pos, avdtp_cid); 608 pos += 2; 609 reverse_bd_addr(addr,&event[pos]); 610 pos += 6; 611 event[pos++] = local_seid; 612 event[pos++] = remote_seid; 613 event[pos++] = status; 614 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 615 } 616 617 void avdtp_signaling_emit_sep(btstack_packet_handler_t callback, uint16_t avdtp_cid, avdtp_sep_t sep){ 618 if (!callback) return; 619 uint8_t event[9]; 620 int pos = 0; 621 event[pos++] = HCI_EVENT_AVDTP_META; 622 event[pos++] = sizeof(event) - 2; 623 event[pos++] = AVDTP_SUBEVENT_SIGNALING_SEP_FOUND; 624 little_endian_store_16(event, pos, avdtp_cid); 625 pos += 2; 626 event[pos++] = sep.seid; 627 event[pos++] = sep.in_use; 628 event[pos++] = sep.media_type; 629 event[pos++] = sep.type; 630 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 631 } 632 633 void avdtp_signaling_emit_sep_done(btstack_packet_handler_t callback, uint16_t avdtp_cid){ 634 if (!callback) return; 635 uint8_t event[5]; 636 int pos = 0; 637 event[pos++] = HCI_EVENT_AVDTP_META; 638 event[pos++] = sizeof(event) - 2; 639 event[pos++] = AVDTP_SUBEVENT_SIGNALING_SEP_DICOVERY_DONE; 640 little_endian_store_16(event, pos, avdtp_cid); 641 pos += 2; 642 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 643 } 644 645 void avdtp_signaling_emit_delay(btstack_packet_handler_t callback, uint16_t avdtp_cid, uint8_t local_seid, uint16_t delay){ 646 if (!callback) return; 647 uint8_t event[8]; 648 int pos = 0; 649 event[pos++] = HCI_EVENT_AVDTP_META; 650 event[pos++] = sizeof(event) - 2; 651 event[pos++] = AVDTP_SUBEVENT_SIGNALING_DELAY_REPORT; 652 little_endian_store_16(event, pos, avdtp_cid); 653 pos += 2; 654 event[pos++] = local_seid; 655 little_endian_store_16(event, pos, delay); 656 pos += 2; 657 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 658 } 659 660 void avdtp_signaling_emit_accept(btstack_packet_handler_t callback, uint16_t avdtp_cid, uint8_t local_seid, avdtp_signal_identifier_t identifier, bool is_initiator){ 661 if (!callback) return; 662 uint8_t event[8]; 663 int pos = 0; 664 event[pos++] = HCI_EVENT_AVDTP_META; 665 event[pos++] = sizeof(event) - 2; 666 event[pos++] = AVDTP_SUBEVENT_SIGNALING_ACCEPT; 667 little_endian_store_16(event, pos, avdtp_cid); 668 pos += 2; 669 event[pos++] = local_seid; 670 event[pos++] = is_initiator ? 1 : 0; 671 event[pos++] = identifier; 672 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 673 } 674 675 void avdtp_signaling_emit_reject(btstack_packet_handler_t callback, uint16_t avdtp_cid, uint8_t local_seid, avdtp_signal_identifier_t identifier, bool is_initiator){ 676 if (!callback) return; 677 uint8_t event[8]; 678 int pos = 0; 679 event[pos++] = HCI_EVENT_AVDTP_META; 680 event[pos++] = sizeof(event) - 2; 681 event[pos++] = AVDTP_SUBEVENT_SIGNALING_REJECT; 682 little_endian_store_16(event, pos, avdtp_cid); 683 pos += 2; 684 event[pos++] = local_seid; 685 event[pos++] = is_initiator ? 1 : 0; 686 event[pos++] = identifier; 687 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 688 } 689 690 void avdtp_signaling_emit_general_reject(btstack_packet_handler_t callback, uint16_t avdtp_cid, uint8_t local_seid, avdtp_signal_identifier_t identifier, bool is_initiator){ 691 if (!callback) return; 692 uint8_t event[8]; 693 int pos = 0; 694 event[pos++] = HCI_EVENT_AVDTP_META; 695 event[pos++] = sizeof(event) - 2; 696 event[pos++] = AVDTP_SUBEVENT_SIGNALING_GENERAL_REJECT; 697 little_endian_store_16(event, pos, avdtp_cid); 698 pos += 2; 699 event[pos++] = local_seid; 700 event[pos++] = is_initiator ? 1 : 0; 701 event[pos++] = identifier; 702 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 703 } 704 705 static void avdtp_signaling_emit_media_codec_sbc_capability(btstack_packet_handler_t callback, uint16_t avdtp_cid, uint8_t local_seid, uint8_t remote_seid, adtvp_media_codec_capabilities_t media_codec){ 706 if (!callback) return; 707 uint8_t event[15]; 708 int pos = 0; 709 event[pos++] = HCI_EVENT_AVDTP_META; 710 event[pos++] = sizeof(event) - 2; 711 event[pos++] = AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CAPABILITY; 712 little_endian_store_16(event, pos, avdtp_cid); 713 pos += 2; 714 event[pos++] = local_seid; 715 event[pos++] = remote_seid; 716 event[pos++] = media_codec.media_type; 717 event[pos++] = media_codec.media_codec_information[0] >> 4; 718 event[pos++] = media_codec.media_codec_information[0] & 0x0F; 719 event[pos++] = media_codec.media_codec_information[1] >> 4; 720 event[pos++] = (media_codec.media_codec_information[1] & 0x0F) >> 2; 721 event[pos++] = media_codec.media_codec_information[1] & 0x03; 722 event[pos++] = media_codec.media_codec_information[2]; 723 event[pos++] = media_codec.media_codec_information[3]; 724 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 725 } 726 727 static inline void avdtp_signaling_emit_capability(btstack_packet_handler_t callback, uint8_t capability_subevent_id, uint16_t avdtp_cid, uint8_t local_seid, uint8_t remote_seid){ 728 if (!callback) return; 729 uint8_t event[7]; 730 int pos = 0; 731 event[pos++] = HCI_EVENT_AVDTP_META; 732 event[pos++] = sizeof(event) - 2; 733 event[pos++] = capability_subevent_id; 734 little_endian_store_16(event, pos, avdtp_cid); 735 pos += 2; 736 event[pos++] = local_seid; 737 event[pos++] = remote_seid; 738 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 739 } 740 741 static void avdtp_signaling_emit_media_transport_capability(btstack_packet_handler_t callback, uint16_t avdtp_cid, uint8_t local_seid, uint8_t remote_seid){ 742 avdtp_signaling_emit_capability(callback, AVDTP_SUBEVENT_SIGNALING_MEDIA_TRANSPORT_CAPABILITY, avdtp_cid, local_seid, remote_seid); 743 } 744 745 static void avdtp_signaling_emit_reporting_capability(btstack_packet_handler_t callback, uint16_t avdtp_cid, uint8_t local_seid, uint8_t remote_seid){ 746 avdtp_signaling_emit_capability(callback, AVDTP_SUBEVENT_SIGNALING_REPORTING_CAPABILITY, avdtp_cid, local_seid, remote_seid); 747 } 748 749 static void avdtp_signaling_emit_delay_reporting_capability(btstack_packet_handler_t callback, uint16_t avdtp_cid, uint8_t local_seid, uint8_t remote_seid){ 750 avdtp_signaling_emit_capability(callback, AVDTP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY, avdtp_cid, local_seid, remote_seid); 751 } 752 753 static void avdtp_signaling_emit_recovery_capability(btstack_packet_handler_t callback, uint16_t avdtp_cid, uint8_t local_seid, uint8_t remote_seid, avdtp_recovery_capabilities_t * recovery){ 754 if (!callback) return; 755 uint8_t event[10]; 756 int pos = 0; 757 event[pos++] = HCI_EVENT_AVDTP_META; 758 event[pos++] = sizeof(event) - 2; 759 event[pos++] = AVDTP_SUBEVENT_SIGNALING_RECOVERY_CAPABILITY; 760 little_endian_store_16(event, pos, avdtp_cid); 761 pos += 2; 762 event[pos++] = local_seid; 763 event[pos++] = remote_seid; 764 event[pos++] = recovery->recovery_type; 765 event[pos++] = recovery->maximum_recovery_window_size; 766 event[pos++] = recovery->maximum_number_media_packets; 767 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 768 } 769 770 static void avdtp_signaling_emit_content_protection_capability(btstack_packet_handler_t callback, uint16_t avdtp_cid, uint8_t local_seid, uint8_t remote_seid, adtvp_content_protection_t * content_protection){ 771 if (!callback) return; 772 uint8_t event[22]; 773 int pos = 0; 774 event[pos++] = HCI_EVENT_AVDTP_META; 775 event[pos++] = sizeof(event) - 2; 776 event[pos++] = AVDTP_SUBEVENT_SIGNALING_CONTENT_PROTECTION_CAPABILITY; 777 little_endian_store_16(event, pos, avdtp_cid); 778 pos += 2; 779 event[pos++] = local_seid; 780 event[pos++] = remote_seid; 781 782 little_endian_store_16(event, pos, content_protection->cp_type); 783 pos += 2; 784 little_endian_store_16(event, pos, content_protection->cp_type_value_len); 785 pos += 2; 786 787 //TODO: reserve place for value 788 if (content_protection->cp_type_value_len < 10){ 789 (void)memcpy(event + pos, content_protection->cp_type_value, 790 content_protection->cp_type_value_len); 791 } 792 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 793 } 794 795 796 static void avdtp_signaling_emit_header_compression_capability(btstack_packet_handler_t callback, uint16_t avdtp_cid, uint8_t local_seid, uint8_t remote_seid, avdtp_header_compression_capabilities_t * header_compression){ 797 if (!callback) return; 798 uint8_t event[10]; 799 int pos = 0; 800 event[pos++] = HCI_EVENT_AVDTP_META; 801 event[pos++] = sizeof(event) - 2; 802 event[pos++] = AVDTP_SUBEVENT_SIGNALING_HEADER_COMPRESSION_CAPABILITY; 803 little_endian_store_16(event, pos, avdtp_cid); 804 pos += 2; 805 event[pos++] = local_seid; 806 event[pos++] = remote_seid; 807 event[pos++] = header_compression->back_ch; 808 event[pos++] = header_compression->media; 809 event[pos++] = header_compression->recovery; 810 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 811 } 812 813 static void avdtp_signaling_emit_content_multiplexing_capability(btstack_packet_handler_t callback, uint16_t avdtp_cid, uint8_t local_seid, uint8_t remote_seid, avdtp_multiplexing_mode_capabilities_t * multiplexing_mode){ 814 if (!callback) return; 815 uint8_t event[15]; 816 int pos = 0; 817 event[pos++] = HCI_EVENT_AVDTP_META; 818 event[pos++] = sizeof(event) - 2; 819 event[pos++] = AVDTP_SUBEVENT_SIGNALING_MULTIPLEXING_CAPABILITY; 820 little_endian_store_16(event, pos, avdtp_cid); 821 pos += 2; 822 event[pos++] = local_seid; 823 event[pos++] = remote_seid; 824 825 event[pos++] = multiplexing_mode->fragmentation; 826 event[pos++] = multiplexing_mode->transport_identifiers_num; 827 828 int i; 829 for (i = 0; i < 3; i++){ 830 event[pos++] = multiplexing_mode->transport_session_identifiers[i]; 831 } 832 for (i = 0; i < 3; i++){ 833 event[pos++] = multiplexing_mode->tcid[i]; 834 } 835 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 836 } 837 838 static void avdtp_signaling_emit_media_codec_other_capability(btstack_packet_handler_t callback, uint16_t avdtp_cid, uint8_t local_seid, uint8_t remote_seid, adtvp_media_codec_capabilities_t media_codec){ 839 if (!callback) return; 840 uint8_t event[MAX_MEDIA_CODEC_INFORMATION_LENGTH + 12]; 841 int pos = 0; 842 event[pos++] = HCI_EVENT_AVDTP_META; 843 event[pos++] = sizeof(event) - 2; 844 event[pos++] = AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CAPABILITY; 845 little_endian_store_16(event, pos, avdtp_cid); 846 pos += 2; 847 event[pos++] = local_seid; 848 event[pos++] = remote_seid; 849 event[pos++] = media_codec.media_type; 850 little_endian_store_16(event, pos, media_codec.media_codec_type); 851 pos += 2; 852 little_endian_store_16(event, pos, media_codec.media_codec_information_len); 853 pos += 2; 854 (void)memcpy(event + pos, media_codec.media_codec_information, 855 btstack_min(media_codec.media_codec_information_len, MAX_MEDIA_CODEC_INFORMATION_LENGTH)); 856 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 857 } 858 859 static inline void avdtp_signaling_emit_media_codec_sbc(btstack_packet_handler_t callback, uint16_t avdtp_cid, uint8_t local_seid, uint8_t remote_seid, 860 avdtp_media_type_t media_type, const uint8_t * media_codec_information, uint8_t reconfigure){ 861 if (!callback) return; 862 uint8_t event[16+2]; 863 int pos = 0; 864 event[pos++] = HCI_EVENT_AVDTP_META; 865 event[pos++] = sizeof(event) - 2; 866 867 event[pos++] = AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION; 868 little_endian_store_16(event, pos, avdtp_cid); 869 pos += 2; 870 event[pos++] = local_seid; 871 event[pos++] = remote_seid; 872 event[pos++] = reconfigure; 873 874 uint8_t num_channels = 0; 875 uint16_t sampling_frequency = 0; 876 uint8_t subbands = 0; 877 uint8_t block_length = 0; 878 879 uint8_t sampling_frequency_bitmap = media_codec_information[0] >> 4; 880 uint8_t channel_mode_bitmap = media_codec_information[0] & 0x0F; 881 uint8_t block_length_bitmap = media_codec_information[1] >> 4; 882 uint8_t subbands_bitmap = (media_codec_information[1] & 0x0F) >> 2; 883 884 if (channel_mode_bitmap & AVDTP_SBC_MONO){ 885 num_channels = 1; 886 } 887 if ( (channel_mode_bitmap & AVDTP_SBC_JOINT_STEREO) || 888 (channel_mode_bitmap & AVDTP_SBC_STEREO) || 889 (channel_mode_bitmap & AVDTP_SBC_DUAL_CHANNEL) ){ 890 num_channels = 2; 891 } 892 893 if (sampling_frequency_bitmap & AVDTP_SBC_16000){ 894 sampling_frequency = 16000; 895 } 896 if (sampling_frequency_bitmap & AVDTP_SBC_32000){ 897 sampling_frequency = 32000; 898 } 899 if (sampling_frequency_bitmap & AVDTP_SBC_44100){ 900 sampling_frequency = 44100; 901 } 902 if (sampling_frequency_bitmap & AVDTP_SBC_48000){ 903 sampling_frequency = 48000; 904 } 905 906 if (subbands_bitmap & AVDTP_SBC_SUBBANDS_4){ 907 subbands = 4; 908 } 909 if (subbands_bitmap & AVDTP_SBC_SUBBANDS_8){ 910 subbands = 8; 911 } 912 913 if (block_length_bitmap & AVDTP_SBC_BLOCK_LENGTH_4){ 914 block_length = 4; 915 } 916 if (block_length_bitmap & AVDTP_SBC_BLOCK_LENGTH_8){ 917 block_length = 8; 918 } 919 if (block_length_bitmap & AVDTP_SBC_BLOCK_LENGTH_12){ 920 block_length = 12; 921 } 922 if (block_length_bitmap & AVDTP_SBC_BLOCK_LENGTH_16){ 923 block_length = 16; 924 } 925 926 event[pos++] = media_type; 927 little_endian_store_16(event, pos, sampling_frequency); 928 pos += 2; 929 930 event[pos++] = channel_mode_bitmap; 931 event[pos++] = num_channels; 932 event[pos++] = block_length; 933 event[pos++] = subbands; 934 event[pos++] = media_codec_information[1] & 0x03; 935 event[pos++] = media_codec_information[2]; 936 event[pos++] = media_codec_information[3]; 937 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 938 } 939 940 void avdtp_signaling_emit_media_codec_sbc_configuration(btstack_packet_handler_t callback, uint16_t avdtp_cid, uint8_t local_seid, uint8_t remote_seid, avdtp_media_type_t media_type, const uint8_t * media_codec_information){ 941 if (!callback) return; 942 avdtp_signaling_emit_media_codec_sbc(callback, avdtp_cid, local_seid, remote_seid, media_type, media_codec_information, 0); 943 } 944 945 void avdtp_signaling_emit_media_codec_sbc_reconfiguration(btstack_packet_handler_t callback, uint16_t avdtp_cid, uint8_t local_seid, uint8_t remote_seid, avdtp_media_type_t media_type, const uint8_t * media_codec_information){ 946 if (!callback) return; 947 avdtp_signaling_emit_media_codec_sbc(callback, avdtp_cid, local_seid, remote_seid, media_type, media_codec_information, 1); 948 } 949 950 951 static inline void avdtp_signaling_emit_media_codec_other(btstack_packet_handler_t callback, uint16_t avdtp_cid, uint8_t local_seid, uint8_t remote_seid, adtvp_media_codec_capabilities_t media_codec, uint8_t reconfigure){ 952 uint8_t event[MAX_MEDIA_CODEC_INFORMATION_LENGTH + 13]; 953 int pos = 0; 954 event[pos++] = HCI_EVENT_AVDTP_META; 955 event[pos++] = sizeof(event) - 2; 956 event[pos++] = AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION; 957 little_endian_store_16(event, pos, avdtp_cid); 958 pos += 2; 959 event[pos++] = local_seid; 960 event[pos++] = remote_seid; 961 event[pos++] = reconfigure; 962 event[pos++] = media_codec.media_type; 963 little_endian_store_16(event, pos, media_codec.media_codec_type); 964 pos += 2; 965 little_endian_store_16(event, pos, media_codec.media_codec_information_len); 966 pos += 2; 967 968 int media_codec_len = btstack_min(MAX_MEDIA_CODEC_INFORMATION_LENGTH, media_codec.media_codec_information_len); 969 (void)memcpy(event + pos, media_codec.media_codec_information, 970 media_codec_len); 971 972 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 973 } 974 975 static void avdtp_signaling_emit_capability_done(btstack_packet_handler_t callback, uint16_t avdtp_cid, uint8_t local_seid, uint8_t remote_seid){ 976 if (!callback) return; 977 uint8_t event[7]; 978 int pos = 0; 979 event[pos++] = HCI_EVENT_AVDTP_META; 980 event[pos++] = sizeof(event) - 2; 981 event[pos++] = AVDTP_SUBEVENT_SIGNALING_CAPABILITIES_DONE; 982 little_endian_store_16(event, pos, avdtp_cid); 983 pos += 2; 984 event[pos++] = local_seid; 985 event[pos++] = remote_seid; 986 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 987 } 988 989 void avdtp_signaling_emit_media_codec_other_configuration(btstack_packet_handler_t callback, uint16_t avdtp_cid, uint8_t local_seid, uint8_t remote_seid, adtvp_media_codec_capabilities_t media_codec){ 990 if (!callback) return; 991 avdtp_signaling_emit_media_codec_other(callback, avdtp_cid, local_seid, remote_seid, media_codec, 0); 992 } 993 994 void avdtp_signaling_emit_media_codec_other_reconfiguration(btstack_packet_handler_t callback, uint16_t avdtp_cid, uint8_t local_seid, uint8_t remote_seid, adtvp_media_codec_capabilities_t media_codec){ 995 if (!callback) return; 996 avdtp_signaling_emit_media_codec_other(callback, avdtp_cid, local_seid, remote_seid, media_codec, 1); 997 } 998 999 void avdtp_emit_capabilities(btstack_packet_handler_t callback, uint16_t avdtp_cid, uint8_t local_seid, uint8_t remote_seid, avdtp_capabilities_t * capabilities, uint16_t registered_service_categories){ 1000 if (get_bit16(registered_service_categories, AVDTP_MEDIA_CODEC)){ 1001 switch (capabilities->media_codec.media_codec_type){ 1002 case AVDTP_CODEC_SBC: 1003 avdtp_signaling_emit_media_codec_sbc_capability(callback, avdtp_cid, local_seid, remote_seid, capabilities->media_codec); 1004 break; 1005 default: 1006 avdtp_signaling_emit_media_codec_other_capability(callback, avdtp_cid, local_seid, remote_seid, capabilities->media_codec); 1007 break; 1008 } 1009 } 1010 1011 if (get_bit16(registered_service_categories, AVDTP_MEDIA_TRANSPORT)){ 1012 avdtp_signaling_emit_media_transport_capability(callback, avdtp_cid, local_seid, remote_seid); 1013 } 1014 if (get_bit16(registered_service_categories, AVDTP_REPORTING)){ 1015 avdtp_signaling_emit_reporting_capability(callback, avdtp_cid, local_seid, remote_seid); 1016 } 1017 if (get_bit16(registered_service_categories, AVDTP_RECOVERY)){ 1018 avdtp_signaling_emit_recovery_capability(callback, avdtp_cid, local_seid, remote_seid, &capabilities->recovery); 1019 } 1020 if (get_bit16(registered_service_categories, AVDTP_CONTENT_PROTECTION)){ 1021 avdtp_signaling_emit_content_protection_capability(callback, avdtp_cid, local_seid, remote_seid, &capabilities->content_protection); 1022 } 1023 if (get_bit16(registered_service_categories, AVDTP_HEADER_COMPRESSION)){ 1024 avdtp_signaling_emit_header_compression_capability(callback, avdtp_cid, local_seid, remote_seid, &capabilities->header_compression); 1025 } 1026 if (get_bit16(registered_service_categories, AVDTP_MULTIPLEXING)){ 1027 avdtp_signaling_emit_content_multiplexing_capability(callback, avdtp_cid, local_seid, remote_seid, &capabilities->multiplexing_mode); 1028 } 1029 if (get_bit16(registered_service_categories, AVDTP_DELAY_REPORTING)){ 1030 avdtp_signaling_emit_delay_reporting_capability(callback, avdtp_cid, local_seid, remote_seid); 1031 } 1032 avdtp_signaling_emit_capability_done(callback, avdtp_cid, local_seid, remote_seid); 1033 } 1034 1035 void avdtp_emit_configuration(btstack_packet_handler_t callback, uint16_t avdtp_cid, uint8_t local_seid, uint8_t remote_seid, avdtp_capabilities_t * configuration, uint16_t configured_service_categories){ 1036 if (get_bit16(configured_service_categories, AVDTP_MEDIA_CODEC)){ 1037 switch (configuration->media_codec.media_codec_type){ 1038 case AVDTP_CODEC_SBC: 1039 avdtp_signaling_emit_media_codec_sbc_configuration(callback, avdtp_cid, local_seid, remote_seid, 1040 configuration->media_codec.media_type, configuration->media_codec.media_codec_information); 1041 break; 1042 default: 1043 avdtp_signaling_emit_media_codec_other_configuration(callback, avdtp_cid, local_seid, remote_seid, configuration->media_codec); 1044 break; 1045 } 1046 } 1047 } 1048 1049 1050 uint8_t avdtp_request_can_send_now_acceptor(avdtp_connection_t * connection, uint16_t l2cap_cid){ 1051 if (!connection) return AVDTP_CONNECTION_DOES_NOT_EXIST; 1052 connection->wait_to_send_acceptor = 1; 1053 l2cap_request_can_send_now_event(l2cap_cid); 1054 return ERROR_CODE_SUCCESS; 1055 } 1056 1057 uint8_t avdtp_request_can_send_now_initiator(avdtp_connection_t * connection, uint16_t l2cap_cid){ 1058 if (!connection) return AVDTP_CONNECTION_DOES_NOT_EXIST; 1059 connection->wait_to_send_initiator = 1; 1060 l2cap_request_can_send_now_event(l2cap_cid); 1061 return ERROR_CODE_SUCCESS; 1062 } 1063 1064 uint8_t avdtp_request_can_send_now_self(avdtp_connection_t * connection, uint16_t l2cap_cid){ 1065 if (!connection) return AVDTP_CONNECTION_DOES_NOT_EXIST; 1066 connection->wait_to_send_self = 1; 1067 l2cap_request_can_send_now_event(l2cap_cid); 1068 return ERROR_CODE_SUCCESS; 1069 } 1070 1071 uint8_t avdtp_local_seid(avdtp_stream_endpoint_t * stream_endpoint){ 1072 if (!stream_endpoint) return 0; 1073 return stream_endpoint->sep.seid; 1074 1075 } 1076 1077 uint8_t avdtp_remote_seid(avdtp_stream_endpoint_t * stream_endpoint){ 1078 if (!stream_endpoint) return AVDTP_INVALID_SEP_SEID; 1079 return stream_endpoint->remote_sep.seid; 1080 } 1081 1082 void a2dp_streaming_emit_connection_established(btstack_packet_handler_t callback, uint16_t cid, bd_addr_t addr, uint8_t local_seid, uint8_t remote_seid, uint8_t status){ 1083 if (!callback) return; 1084 uint8_t event[14]; 1085 int pos = 0; 1086 event[pos++] = HCI_EVENT_A2DP_META; 1087 event[pos++] = sizeof(event) - 2; 1088 event[pos++] = A2DP_SUBEVENT_STREAM_ESTABLISHED; 1089 little_endian_store_16(event, pos, cid); 1090 pos += 2; 1091 reverse_bd_addr(addr,&event[pos]); 1092 pos += 6; 1093 event[pos++] = local_seid; 1094 event[pos++] = remote_seid; 1095 event[pos++] = status; 1096 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 1097 } 1098