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 uint8_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 int avdtp_read_signaling_header(avdtp_signaling_packet_t * signaling_header, uint8_t * packet, uint16_t size){ 217 int pos = 0; 218 if (size < 2) return pos; 219 signaling_header->transaction_label = packet[pos] >> 4; 220 signaling_header->packet_type = (avdtp_packet_type_t)((packet[pos] >> 2) & 0x03); 221 signaling_header->message_type = (avdtp_message_type_t) (packet[pos] & 0x03); 222 pos++; 223 memset(signaling_header->command, 0, sizeof(signaling_header->command)); 224 switch (signaling_header->packet_type){ 225 case AVDTP_SINGLE_PACKET: 226 signaling_header->num_packets = 0; 227 signaling_header->offset = 0; 228 signaling_header->size = 0; 229 break; 230 case AVDTP_END_PACKET: 231 signaling_header->num_packets = 0; 232 break; 233 case AVDTP_START_PACKET: 234 signaling_header->num_packets = packet[pos++]; 235 signaling_header->size = 0; 236 signaling_header->offset = 0; 237 break; 238 case AVDTP_CONTINUE_PACKET: 239 if (signaling_header->num_packets <= 0) { 240 log_info(" ERROR: wrong num fragmented packets\n"); 241 break; 242 } 243 signaling_header->num_packets--; 244 break; 245 } 246 signaling_header->signal_identifier = (avdtp_signal_identifier_t)(packet[pos++] & 0x3f); 247 return pos; 248 } 249 250 int avdtp_pack_service_capabilities(uint8_t * buffer, int size, avdtp_capabilities_t caps, avdtp_service_category_t category, uint8_t pack_all_capabilities){ 251 UNUSED(size); 252 253 int i; 254 // pos = 0 reserved for length 255 int pos = 1; 256 switch(category){ 257 case AVDTP_MEDIA_TRANSPORT: 258 case AVDTP_REPORTING: 259 break; 260 case AVDTP_DELAY_REPORTING: 261 if (!pack_all_capabilities) break; 262 break; 263 case AVDTP_RECOVERY: 264 buffer[pos++] = caps.recovery.recovery_type; // 0x01=RFC2733 265 buffer[pos++] = caps.recovery.maximum_recovery_window_size; 266 buffer[pos++] = caps.recovery.maximum_number_media_packets; 267 break; 268 case AVDTP_CONTENT_PROTECTION: 269 buffer[pos++] = caps.content_protection.cp_type_value_len + 2; 270 big_endian_store_16(buffer, pos, caps.content_protection.cp_type); 271 pos += 2; 272 memcpy(buffer+pos, caps.content_protection.cp_type_value, caps.content_protection.cp_type_value_len); 273 break; 274 case AVDTP_HEADER_COMPRESSION: 275 buffer[pos++] = (caps.header_compression.back_ch << 7) | (caps.header_compression.media << 6) | (caps.header_compression.recovery << 5); 276 break; 277 case AVDTP_MULTIPLEXING: 278 buffer[pos++] = caps.multiplexing_mode.fragmentation << 7; 279 for (i=0; i<caps.multiplexing_mode.transport_identifiers_num; i++){ 280 buffer[pos++] = caps.multiplexing_mode.transport_session_identifiers[i] << 7; 281 buffer[pos++] = caps.multiplexing_mode.tcid[i] << 7; 282 // media, reporting. recovery 283 } 284 break; 285 case AVDTP_MEDIA_CODEC: 286 buffer[pos++] = ((uint8_t)caps.media_codec.media_type) << 4; 287 buffer[pos++] = (uint8_t)caps.media_codec.media_codec_type; 288 for (i = 0; i<caps.media_codec.media_codec_information_len; i++){ 289 buffer[pos++] = caps.media_codec.media_codec_information[i]; 290 } 291 break; 292 default: 293 break; 294 } 295 buffer[0] = pos - 1; // length 296 return pos; 297 } 298 299 static int avdtp_unpack_service_capabilities_has_errors(avdtp_connection_t * connection, avdtp_service_category_t category, uint8_t cap_len){ 300 connection->error_code = 0; 301 302 if (category == AVDTP_SERVICE_CATEGORY_INVALID_0 || 303 (category == AVDTP_SERVICE_CATEGORY_INVALID_FF && connection->signaling_packet.signal_identifier == AVDTP_SI_RECONFIGURE)){ 304 log_info(" ERROR: BAD SERVICE CATEGORY %d\n", category); 305 connection->reject_service_category = category; 306 connection->error_code = BAD_SERV_CATEGORY; 307 return 1; 308 } 309 310 if (connection->signaling_packet.signal_identifier == AVDTP_SI_RECONFIGURE){ 311 if (category != AVDTP_CONTENT_PROTECTION && category != AVDTP_MEDIA_CODEC){ 312 log_info(" ERROR: REJECT CATEGORY, INVALID_CAPABILITIES\n"); 313 connection->reject_service_category = category; 314 connection->error_code = INVALID_CAPABILITIES; 315 return 1; 316 } 317 } 318 319 switch(category){ 320 case AVDTP_MEDIA_TRANSPORT: 321 if (cap_len != 0){ 322 log_info(" ERROR: REJECT CATEGORY, BAD_MEDIA_TRANSPORT\n"); 323 connection->reject_service_category = category; 324 connection->error_code = BAD_MEDIA_TRANSPORT_FORMAT; 325 return 1; 326 } 327 break; 328 case AVDTP_REPORTING: 329 case AVDTP_DELAY_REPORTING: 330 if (cap_len != 0){ 331 log_info(" ERROR: REJECT CATEGORY, BAD_LENGTH\n"); 332 connection->reject_service_category = category; 333 connection->error_code = BAD_LENGTH; 334 return 1; 335 } 336 break; 337 case AVDTP_RECOVERY: 338 if (cap_len < 3){ 339 log_info(" ERROR: REJECT CATEGORY, BAD_MEDIA_TRANSPORT\n"); 340 connection->reject_service_category = category; 341 connection->error_code = BAD_RECOVERY_FORMAT; 342 return 1; 343 } 344 break; 345 case AVDTP_CONTENT_PROTECTION: 346 if (cap_len < 2){ 347 log_info(" ERROR: REJECT CATEGORY, BAD_CP_FORMAT\n"); 348 connection->reject_service_category = category; 349 connection->error_code = BAD_CP_FORMAT; 350 return 1; 351 } 352 break; 353 case AVDTP_HEADER_COMPRESSION: 354 break; 355 case AVDTP_MULTIPLEXING: 356 break; 357 case AVDTP_MEDIA_CODEC: 358 break; 359 default: 360 break; 361 } 362 return 0; 363 } 364 365 uint16_t avdtp_unpack_service_capabilities(avdtp_connection_t * connection, avdtp_capabilities_t * caps, uint8_t * packet, uint16_t size){ 366 if (size == 0) return 0; 367 368 uint16_t registered_service_categories = 0; 369 int pos = 0; 370 int i; 371 avdtp_service_category_t category = (avdtp_service_category_t)packet[pos++]; 372 uint8_t cap_len = packet[pos++]; 373 if (cap_len > size - pos){ 374 connection->reject_service_category = category; 375 connection->error_code = BAD_LENGTH; 376 return 0; 377 } 378 379 if (avdtp_unpack_service_capabilities_has_errors(connection, category, cap_len)) return 0; 380 381 int processed_cap_len = 0; 382 int rfa = 0; 383 384 while (pos < size){ 385 rfa = 0; 386 processed_cap_len = pos; 387 switch(category){ 388 case AVDTP_RECOVERY: 389 caps->recovery.recovery_type = packet[pos++]; 390 caps->recovery.maximum_recovery_window_size = packet[pos++]; 391 caps->recovery.maximum_number_media_packets = packet[pos++]; 392 break; 393 case AVDTP_CONTENT_PROTECTION: 394 caps->content_protection.cp_type = big_endian_read_16(packet, pos); 395 pos+=2; 396 397 caps->content_protection.cp_type_value_len = cap_len - 2; 398 pos += caps->content_protection.cp_type_value_len; 399 400 // connection->reject_service_category = category; 401 // connection->error_code = UNSUPPORTED_CONFIGURATION; 402 // support for content protection goes here 403 break; 404 405 case AVDTP_HEADER_COMPRESSION: 406 caps->header_compression.back_ch = packet[pos] >> 7; 407 caps->header_compression.media = packet[pos] >> 6; 408 caps->header_compression.recovery = packet[pos] >> 5; 409 pos++; 410 break; 411 case AVDTP_MULTIPLEXING: 412 caps->multiplexing_mode.fragmentation = packet[pos++] >> 7; 413 // read [tsid, tcid] for media, reporting. recovery respectively 414 caps->multiplexing_mode.transport_identifiers_num = 3; 415 for (i=0; i<caps->multiplexing_mode.transport_identifiers_num; i++){ 416 caps->multiplexing_mode.transport_session_identifiers[i] = packet[pos++] >> 7; 417 caps->multiplexing_mode.tcid[i] = packet[pos++] >> 7; 418 } 419 break; 420 case AVDTP_MEDIA_CODEC: 421 caps->media_codec.media_type = (avdtp_media_type_t)(packet[pos++] >> 4); 422 caps->media_codec.media_codec_type = (avdtp_media_codec_type_t)(packet[pos++]); 423 caps->media_codec.media_codec_information_len = cap_len - 2; 424 caps->media_codec.media_codec_information = &packet[pos]; 425 pos += caps->media_codec.media_codec_information_len; 426 break; 427 case AVDTP_MEDIA_TRANSPORT: 428 case AVDTP_REPORTING: 429 case AVDTP_DELAY_REPORTING: 430 pos += cap_len; 431 break; 432 default: 433 pos += cap_len; 434 rfa = 1; 435 break; 436 } 437 processed_cap_len = pos - processed_cap_len; 438 // printf("processed category %d, cap_len %d, processed_cap_len %d, rfa %d\n", category, cap_len, processed_cap_len, rfa); 439 440 if (cap_len == processed_cap_len){ 441 // printf("pos %d, size %d \n", rfa, size - 2); 442 443 if (!rfa) { 444 registered_service_categories = store_bit16(registered_service_categories, category, 1); 445 } 446 if (pos < size-2){ 447 //int old_pos = pos; 448 category = (avdtp_service_category_t)packet[pos++]; 449 cap_len = packet[pos++]; 450 if (avdtp_unpack_service_capabilities_has_errors(connection, category, cap_len)){ 451 log_error("avdtp_unpack_service_capabilities_has_errors"); 452 return 0; 453 } 454 } 455 } 456 } 457 return registered_service_categories; 458 } 459 460 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){ 461 if (signaling_packet->offset) return; 462 uint8_t pack_all_capabilities = 1; 463 signaling_packet->message_type = AVDTP_RESPONSE_ACCEPT_MSG; 464 int i; 465 466 signaling_packet->size = 0; 467 memset(signaling_packet->command, 0 , sizeof(signaling_packet->command)); 468 469 470 switch (identifier) { 471 case AVDTP_SI_GET_CAPABILITIES: 472 pack_all_capabilities = 0; 473 break; 474 case AVDTP_SI_GET_ALL_CAPABILITIES: 475 pack_all_capabilities = 1; 476 break; 477 case AVDTP_SI_SET_CONFIGURATION: 478 signaling_packet->command[signaling_packet->size++] = signaling_packet->acp_seid << 2; 479 signaling_packet->command[signaling_packet->size++] = signaling_packet->int_seid << 2; 480 signaling_packet->message_type = AVDTP_CMD_MSG; 481 break; 482 case AVDTP_SI_RECONFIGURE: 483 signaling_packet->command[signaling_packet->size++] = signaling_packet->acp_seid << 2; 484 signaling_packet->message_type = AVDTP_CMD_MSG; 485 break; 486 default: 487 log_error("avdtp_prepare_capabilities wrong identifier %d", identifier); 488 break; 489 } 490 491 for (i = 1; i < 9; i++){ 492 int registered_category = get_bit16(registered_service_categories, i); 493 if (!registered_category && (identifier == AVDTP_SI_SET_CONFIGURATION || identifier == AVDTP_SI_RECONFIGURE)){ 494 // TODO: introduce bitmap of mandatory categories 495 if (i == 1){ 496 registered_category = 1; 497 } 498 } 499 if (registered_category){ 500 // service category 501 signaling_packet->command[signaling_packet->size++] = i; 502 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); 503 } 504 } 505 506 signaling_packet->signal_identifier = (avdtp_signal_identifier_t)identifier; 507 signaling_packet->transaction_label = transaction_label; 508 } 509 510 int avdtp_signaling_create_fragment(uint16_t cid, avdtp_signaling_packet_t * signaling_packet, uint8_t * out_buffer) { 511 int mtu = l2cap_get_remote_mtu_for_local_cid(cid); 512 int data_len = 0; 513 514 uint16_t offset = signaling_packet->offset; 515 uint16_t pos = 1; 516 517 if (offset == 0){ 518 if (signaling_packet->size <= mtu - 2){ 519 signaling_packet->packet_type = AVDTP_SINGLE_PACKET; 520 out_buffer[pos++] = signaling_packet->signal_identifier; 521 data_len = signaling_packet->size; 522 } else { 523 signaling_packet->packet_type = AVDTP_START_PACKET; 524 out_buffer[pos++] = (mtu + signaling_packet->size)/ (mtu-1); 525 out_buffer[pos++] = signaling_packet->signal_identifier; 526 data_len = mtu - 3; 527 signaling_packet->offset = data_len; 528 } 529 } else { 530 int remaining_bytes = signaling_packet->size - offset; 531 if (remaining_bytes <= mtu - 1){ 532 signaling_packet->packet_type = AVDTP_END_PACKET; 533 data_len = remaining_bytes; 534 signaling_packet->offset = 0; 535 } else{ 536 signaling_packet->packet_type = AVDTP_CONTINUE_PACKET; 537 data_len = mtu - 1; 538 signaling_packet->offset += data_len; 539 } 540 } 541 out_buffer[0] = avdtp_header(signaling_packet->transaction_label, signaling_packet->packet_type, signaling_packet->message_type); 542 memcpy(out_buffer+pos, signaling_packet->command + offset, data_len); 543 pos += data_len; 544 return pos; 545 } 546 547 548 void avdtp_signaling_emit_connection_established(btstack_packet_handler_t callback, uint16_t avdtp_cid, bd_addr_t addr, uint8_t status){ 549 if (!callback) return; 550 uint8_t event[12]; 551 int pos = 0; 552 event[pos++] = HCI_EVENT_AVDTP_META; 553 event[pos++] = sizeof(event) - 2; 554 event[pos++] = AVDTP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED; 555 little_endian_store_16(event, pos, avdtp_cid); 556 pos += 2; 557 reverse_bd_addr(addr,&event[pos]); 558 pos += 6; 559 event[pos++] = status; 560 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 561 } 562 563 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){ 564 if (!callback) return; 565 uint8_t event[8]; 566 int pos = 0; 567 event[pos++] = HCI_EVENT_AVDTP_META; 568 event[pos++] = sizeof(event) - 2; 569 event[pos++] = AVDTP_SUBEVENT_STREAMING_CAN_SEND_MEDIA_PACKET_NOW; 570 little_endian_store_16(event, pos, avdtp_cid); 571 pos += 2; 572 event[pos++] = seid; 573 little_endian_store_16(event, pos, sequence_number); 574 pos += 2; 575 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 576 } 577 578 void avdtp_signaling_emit_connection_released(btstack_packet_handler_t callback, uint16_t avdtp_cid){ 579 if (!callback) return; 580 uint8_t event[5]; 581 int pos = 0; 582 event[pos++] = HCI_EVENT_AVDTP_META; 583 event[pos++] = sizeof(event) - 2; 584 event[pos++] = AVDTP_SUBEVENT_SIGNALING_CONNECTION_RELEASED; 585 little_endian_store_16(event, pos, avdtp_cid); 586 pos += 2; 587 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 588 } 589 590 void avdtp_streaming_emit_connection_released(btstack_packet_handler_t callback, uint16_t avdtp_cid, uint8_t local_seid){ 591 if (!callback) return; 592 uint8_t event[6]; 593 int pos = 0; 594 event[pos++] = HCI_EVENT_AVDTP_META; 595 event[pos++] = sizeof(event) - 2; 596 event[pos++] = AVDTP_SUBEVENT_STREAMING_CONNECTION_RELEASED; 597 little_endian_store_16(event, pos, avdtp_cid); 598 pos += 2; 599 event[pos++] = local_seid; 600 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 601 } 602 603 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){ 604 if (!callback) return; 605 uint8_t event[14]; 606 int pos = 0; 607 event[pos++] = HCI_EVENT_AVDTP_META; 608 event[pos++] = sizeof(event) - 2; 609 event[pos++] = AVDTP_SUBEVENT_STREAMING_CONNECTION_ESTABLISHED; 610 little_endian_store_16(event, pos, avdtp_cid); 611 pos += 2; 612 reverse_bd_addr(addr,&event[pos]); 613 pos += 6; 614 event[pos++] = local_seid; 615 event[pos++] = remote_seid; 616 event[pos++] = status; 617 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 618 } 619 620 void avdtp_signaling_emit_sep(btstack_packet_handler_t callback, uint16_t avdtp_cid, avdtp_sep_t sep){ 621 if (!callback) return; 622 uint8_t event[9]; 623 int pos = 0; 624 event[pos++] = HCI_EVENT_AVDTP_META; 625 event[pos++] = sizeof(event) - 2; 626 event[pos++] = AVDTP_SUBEVENT_SIGNALING_SEP_FOUND; 627 little_endian_store_16(event, pos, avdtp_cid); 628 pos += 2; 629 event[pos++] = sep.seid; 630 event[pos++] = sep.in_use; 631 event[pos++] = sep.media_type; 632 event[pos++] = sep.type; 633 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 634 } 635 636 void avdtp_signaling_emit_sep_done(btstack_packet_handler_t callback, uint16_t avdtp_cid){ 637 if (!callback) return; 638 uint8_t event[5]; 639 int pos = 0; 640 event[pos++] = HCI_EVENT_AVDTP_META; 641 event[pos++] = sizeof(event) - 2; 642 event[pos++] = AVDTP_SUBEVENT_SIGNALING_SEP_DICOVERY_DONE; 643 little_endian_store_16(event, pos, avdtp_cid); 644 pos += 2; 645 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 646 } 647 648 649 void avdtp_signaling_emit_accept(btstack_packet_handler_t callback, uint16_t avdtp_cid, uint8_t local_seid, avdtp_signal_identifier_t identifier){ 650 if (!callback) return; 651 uint8_t event[7]; 652 int pos = 0; 653 event[pos++] = HCI_EVENT_AVDTP_META; 654 event[pos++] = sizeof(event) - 2; 655 event[pos++] = AVDTP_SUBEVENT_SIGNALING_ACCEPT; 656 little_endian_store_16(event, pos, avdtp_cid); 657 pos += 2; 658 event[pos++] = local_seid; 659 event[pos++] = identifier; 660 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 661 } 662 663 void avdtp_signaling_emit_reject(btstack_packet_handler_t callback, uint16_t avdtp_cid, uint8_t local_seid, avdtp_signal_identifier_t identifier){ 664 if (!callback) return; 665 uint8_t event[7]; 666 int pos = 0; 667 event[pos++] = HCI_EVENT_AVDTP_META; 668 event[pos++] = sizeof(event) - 2; 669 event[pos++] = AVDTP_SUBEVENT_SIGNALING_REJECT; 670 little_endian_store_16(event, pos, avdtp_cid); 671 pos += 2; 672 event[pos++] = local_seid; 673 event[pos++] = identifier; 674 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 675 } 676 677 void avdtp_signaling_emit_general_reject(btstack_packet_handler_t callback, uint16_t avdtp_cid, uint8_t local_seid, avdtp_signal_identifier_t identifier){ 678 if (!callback) return; 679 uint8_t event[7]; 680 int pos = 0; 681 event[pos++] = HCI_EVENT_AVDTP_META; 682 event[pos++] = sizeof(event) - 2; 683 event[pos++] = AVDTP_SUBEVENT_SIGNALING_GENERAL_REJECT; 684 little_endian_store_16(event, pos, avdtp_cid); 685 pos += 2; 686 event[pos++] = local_seid; 687 event[pos++] = identifier; 688 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 689 } 690 691 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){ 692 if (!callback) return; 693 uint8_t event[15]; 694 int pos = 0; 695 event[pos++] = HCI_EVENT_AVDTP_META; 696 event[pos++] = sizeof(event) - 2; 697 event[pos++] = AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CAPABILITY; 698 little_endian_store_16(event, pos, avdtp_cid); 699 pos += 2; 700 event[pos++] = local_seid; 701 event[pos++] = remote_seid; 702 event[pos++] = media_codec.media_type; 703 event[pos++] = media_codec.media_codec_information[0] >> 4; 704 event[pos++] = media_codec.media_codec_information[0] & 0x0F; 705 event[pos++] = media_codec.media_codec_information[1] >> 4; 706 event[pos++] = (media_codec.media_codec_information[1] & 0x0F) >> 2; 707 event[pos++] = media_codec.media_codec_information[1] & 0x03; 708 event[pos++] = media_codec.media_codec_information[2]; 709 event[pos++] = media_codec.media_codec_information[3]; 710 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 711 } 712 713 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){ 714 if (!callback) return; 715 uint8_t event[7]; 716 int pos = 0; 717 event[pos++] = HCI_EVENT_AVDTP_META; 718 event[pos++] = sizeof(event) - 2; 719 event[pos++] = capability_subevent_id; 720 little_endian_store_16(event, pos, avdtp_cid); 721 pos += 2; 722 event[pos++] = local_seid; 723 event[pos++] = remote_seid; 724 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 725 } 726 727 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){ 728 avdtp_signaling_emit_capability(callback, AVDTP_SUBEVENT_SIGNALING_MEDIA_TRANSPORT_CAPABILITY, avdtp_cid, local_seid, remote_seid); 729 } 730 731 static void avdtp_signaling_emit_reporting_capability(btstack_packet_handler_t callback, uint16_t avdtp_cid, uint8_t local_seid, uint8_t remote_seid){ 732 avdtp_signaling_emit_capability(callback, AVDTP_SUBEVENT_SIGNALING_REPORTING_CAPABILITY, avdtp_cid, local_seid, remote_seid); 733 } 734 735 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){ 736 avdtp_signaling_emit_capability(callback, AVDTP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY, avdtp_cid, local_seid, remote_seid); 737 } 738 739 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){ 740 if (!callback) return; 741 uint8_t event[10]; 742 int pos = 0; 743 event[pos++] = HCI_EVENT_AVDTP_META; 744 event[pos++] = sizeof(event) - 2; 745 event[pos++] = AVDTP_SUBEVENT_SIGNALING_RECOVERY_CAPABILITY; 746 little_endian_store_16(event, pos, avdtp_cid); 747 pos += 2; 748 event[pos++] = local_seid; 749 event[pos++] = remote_seid; 750 event[pos++] = recovery->recovery_type; 751 event[pos++] = recovery->maximum_recovery_window_size; 752 event[pos++] = recovery->maximum_number_media_packets; 753 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 754 } 755 756 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){ 757 if (!callback) return; 758 uint8_t event[22]; 759 int pos = 0; 760 event[pos++] = HCI_EVENT_AVDTP_META; 761 event[pos++] = sizeof(event) - 2; 762 event[pos++] = AVDTP_SUBEVENT_SIGNALING_CONTENT_PROTECTION_CAPABILITY; 763 little_endian_store_16(event, pos, avdtp_cid); 764 pos += 2; 765 event[pos++] = local_seid; 766 event[pos++] = remote_seid; 767 768 little_endian_store_16(event, pos, content_protection->cp_type); 769 pos += 2; 770 little_endian_store_16(event, pos, content_protection->cp_type_value_len); 771 pos += 2; 772 773 //TODO: reserve place for value 774 if (content_protection->cp_type_value_len < 10){ 775 memcpy(event+pos, content_protection->cp_type_value, content_protection->cp_type_value_len); 776 } 777 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 778 } 779 780 781 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){ 782 if (!callback) return; 783 uint8_t event[10]; 784 int pos = 0; 785 event[pos++] = HCI_EVENT_AVDTP_META; 786 event[pos++] = sizeof(event) - 2; 787 event[pos++] = AVDTP_SUBEVENT_SIGNALING_HEADER_COMPRESSION_CAPABILITY; 788 little_endian_store_16(event, pos, avdtp_cid); 789 pos += 2; 790 event[pos++] = local_seid; 791 event[pos++] = remote_seid; 792 event[pos++] = header_compression->back_ch; 793 event[pos++] = header_compression->media; 794 event[pos++] = header_compression->recovery; 795 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 796 } 797 798 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){ 799 if (!callback) return; 800 uint8_t event[15]; 801 int pos = 0; 802 event[pos++] = HCI_EVENT_AVDTP_META; 803 event[pos++] = sizeof(event) - 2; 804 event[pos++] = AVDTP_SUBEVENT_SIGNALING_MULTIPLEXING_CAPABILITY; 805 little_endian_store_16(event, pos, avdtp_cid); 806 pos += 2; 807 event[pos++] = local_seid; 808 event[pos++] = remote_seid; 809 810 event[pos++] = multiplexing_mode->fragmentation; 811 event[pos++] = multiplexing_mode->transport_identifiers_num; 812 813 int i; 814 for (i = 0; i < 3; i++){ 815 event[pos++] = multiplexing_mode->transport_session_identifiers[i]; 816 } 817 for (i = 0; i < 3; i++){ 818 event[pos++] = multiplexing_mode->tcid[i]; 819 } 820 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 821 } 822 823 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){ 824 if (!callback) return; 825 uint8_t event[MAX_MEDIA_CODEC_INFORMATION_LENGTH + 12]; 826 int pos = 0; 827 event[pos++] = HCI_EVENT_AVDTP_META; 828 event[pos++] = sizeof(event) - 2; 829 event[pos++] = AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CAPABILITY; 830 little_endian_store_16(event, pos, avdtp_cid); 831 pos += 2; 832 event[pos++] = local_seid; 833 event[pos++] = remote_seid; 834 event[pos++] = media_codec.media_type; 835 little_endian_store_16(event, pos, media_codec.media_codec_type); 836 pos += 2; 837 little_endian_store_16(event, pos, media_codec.media_codec_information_len); 838 pos += 2; 839 memcpy(event+pos, media_codec.media_codec_information, btstack_min(media_codec.media_codec_information_len, MAX_MEDIA_CODEC_INFORMATION_LENGTH)); 840 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 841 } 842 843 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, 844 avdtp_media_type_t media_type, const uint8_t * media_codec_information, uint8_t reconfigure){ 845 if (!callback) return; 846 uint8_t event[16+2]; 847 int pos = 0; 848 event[pos++] = HCI_EVENT_AVDTP_META; 849 event[pos++] = sizeof(event) - 2; 850 851 event[pos++] = AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION; 852 little_endian_store_16(event, pos, avdtp_cid); 853 pos += 2; 854 event[pos++] = local_seid; 855 event[pos++] = remote_seid; 856 event[pos++] = reconfigure; 857 858 uint8_t num_channels = 0; 859 uint16_t sampling_frequency = 0; 860 uint8_t subbands = 0; 861 uint8_t block_length = 0; 862 863 uint8_t sampling_frequency_bitmap = media_codec_information[0] >> 4; 864 uint8_t channel_mode_bitmap = media_codec_information[0] & 0x0F; 865 uint8_t block_length_bitmap = media_codec_information[1] >> 4; 866 uint8_t subbands_bitmap = (media_codec_information[1] & 0x0F) >> 2; 867 868 if (channel_mode_bitmap & AVDTP_SBC_MONO){ 869 num_channels = 1; 870 } 871 if ( (channel_mode_bitmap & AVDTP_SBC_JOINT_STEREO) || 872 (channel_mode_bitmap & AVDTP_SBC_STEREO) || 873 (channel_mode_bitmap & AVDTP_SBC_DUAL_CHANNEL) ){ 874 num_channels = 2; 875 } 876 877 if (sampling_frequency_bitmap & AVDTP_SBC_16000){ 878 sampling_frequency = 16000; 879 } 880 if (sampling_frequency_bitmap & AVDTP_SBC_32000){ 881 sampling_frequency = 32000; 882 } 883 if (sampling_frequency_bitmap & AVDTP_SBC_44100){ 884 sampling_frequency = 44100; 885 } 886 if (sampling_frequency_bitmap & AVDTP_SBC_48000){ 887 sampling_frequency = 48000; 888 } 889 890 if (subbands_bitmap & AVDTP_SBC_SUBBANDS_4){ 891 subbands = 4; 892 } 893 if (subbands_bitmap & AVDTP_SBC_SUBBANDS_8){ 894 subbands = 8; 895 } 896 897 if (block_length_bitmap & AVDTP_SBC_BLOCK_LENGTH_4){ 898 block_length = 4; 899 } 900 if (block_length_bitmap & AVDTP_SBC_BLOCK_LENGTH_8){ 901 block_length = 8; 902 } 903 if (block_length_bitmap & AVDTP_SBC_BLOCK_LENGTH_12){ 904 block_length = 12; 905 } 906 if (block_length_bitmap & AVDTP_SBC_BLOCK_LENGTH_16){ 907 block_length = 16; 908 } 909 910 event[pos++] = media_type; 911 little_endian_store_16(event, pos, sampling_frequency); 912 pos += 2; 913 914 event[pos++] = channel_mode_bitmap; 915 event[pos++] = num_channels; 916 event[pos++] = block_length; 917 event[pos++] = subbands; 918 event[pos++] = media_codec_information[1] & 0x03; 919 event[pos++] = media_codec_information[2]; 920 event[pos++] = media_codec_information[3]; 921 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 922 } 923 924 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){ 925 if (!callback) return; 926 avdtp_signaling_emit_media_codec_sbc(callback, avdtp_cid, local_seid, remote_seid, media_type, media_codec_information, 0); 927 } 928 929 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){ 930 if (!callback) return; 931 avdtp_signaling_emit_media_codec_sbc(callback, avdtp_cid, local_seid, remote_seid, media_type, media_codec_information, 1); 932 } 933 934 935 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){ 936 uint8_t event[MAX_MEDIA_CODEC_INFORMATION_LENGTH + 13]; 937 int pos = 0; 938 event[pos++] = HCI_EVENT_AVDTP_META; 939 event[pos++] = sizeof(event) - 2; 940 event[pos++] = AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION; 941 little_endian_store_16(event, pos, avdtp_cid); 942 pos += 2; 943 event[pos++] = local_seid; 944 event[pos++] = remote_seid; 945 event[pos++] = reconfigure; 946 event[pos++] = media_codec.media_type; 947 little_endian_store_16(event, pos, media_codec.media_codec_type); 948 pos += 2; 949 little_endian_store_16(event, pos, media_codec.media_codec_information_len); 950 pos += 2; 951 952 int media_codec_len = btstack_min(MAX_MEDIA_CODEC_INFORMATION_LENGTH, media_codec.media_codec_information_len); 953 memcpy(event+pos, media_codec.media_codec_information, media_codec_len); 954 955 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 956 } 957 958 static void avdtp_signaling_emit_capability_done(btstack_packet_handler_t callback, uint16_t avdtp_cid, uint8_t local_seid, uint8_t remote_seid){ 959 if (!callback) return; 960 uint8_t event[7]; 961 int pos = 0; 962 event[pos++] = HCI_EVENT_AVDTP_META; 963 event[pos++] = sizeof(event) - 2; 964 event[pos++] = AVDTP_SUBEVENT_SIGNALING_CAPABILITY_DONE; 965 little_endian_store_16(event, pos, avdtp_cid); 966 pos += 2; 967 event[pos++] = local_seid; 968 event[pos++] = remote_seid; 969 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 970 } 971 972 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){ 973 if (!callback) return; 974 avdtp_signaling_emit_media_codec_other(callback, avdtp_cid, local_seid, remote_seid, media_codec, 0); 975 } 976 977 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){ 978 if (!callback) return; 979 avdtp_signaling_emit_media_codec_other(callback, avdtp_cid, local_seid, remote_seid, media_codec, 1); 980 } 981 982 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){ 983 if (get_bit16(registered_service_categories, AVDTP_MEDIA_CODEC)){ 984 switch (capabilities->media_codec.media_codec_type){ 985 case AVDTP_CODEC_SBC: 986 avdtp_signaling_emit_media_codec_sbc_capability(callback, avdtp_cid, local_seid, remote_seid, capabilities->media_codec); 987 break; 988 default: 989 avdtp_signaling_emit_media_codec_other_capability(callback, avdtp_cid, local_seid, remote_seid, capabilities->media_codec); 990 break; 991 } 992 } 993 994 if (get_bit16(registered_service_categories, AVDTP_MEDIA_TRANSPORT)){ 995 avdtp_signaling_emit_media_transport_capability(callback, avdtp_cid, local_seid, remote_seid); 996 } 997 if (get_bit16(registered_service_categories, AVDTP_REPORTING)){ 998 avdtp_signaling_emit_reporting_capability(callback, avdtp_cid, local_seid, remote_seid); 999 } 1000 if (get_bit16(registered_service_categories, AVDTP_RECOVERY)){ 1001 avdtp_signaling_emit_recovery_capability(callback, avdtp_cid, local_seid, remote_seid, &capabilities->recovery); 1002 } 1003 if (get_bit16(registered_service_categories, AVDTP_CONTENT_PROTECTION)){ 1004 avdtp_signaling_emit_content_protection_capability(callback, avdtp_cid, local_seid, remote_seid, &capabilities->content_protection); 1005 } 1006 if (get_bit16(registered_service_categories, AVDTP_HEADER_COMPRESSION)){ 1007 avdtp_signaling_emit_header_compression_capability(callback, avdtp_cid, local_seid, remote_seid, &capabilities->header_compression); 1008 } 1009 if (get_bit16(registered_service_categories, AVDTP_MULTIPLEXING)){ 1010 avdtp_signaling_emit_content_multiplexing_capability(callback, avdtp_cid, local_seid, remote_seid, &capabilities->multiplexing_mode); 1011 } 1012 if (get_bit16(registered_service_categories, AVDTP_DELAY_REPORTING)){ 1013 avdtp_signaling_emit_delay_reporting_capability(callback, avdtp_cid, local_seid, remote_seid); 1014 } 1015 avdtp_signaling_emit_capability_done(callback, avdtp_cid, local_seid, remote_seid); 1016 } 1017 1018 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){ 1019 if (get_bit16(configured_service_categories, AVDTP_MEDIA_CODEC)){ 1020 switch (configuration->media_codec.media_codec_type){ 1021 case AVDTP_CODEC_SBC: 1022 avdtp_signaling_emit_media_codec_sbc_configuration(callback, avdtp_cid, local_seid, remote_seid, 1023 configuration->media_codec.media_type, configuration->media_codec.media_codec_information); 1024 break; 1025 default: 1026 avdtp_signaling_emit_media_codec_other_configuration(callback, avdtp_cid, local_seid, remote_seid, configuration->media_codec); 1027 break; 1028 } 1029 } 1030 } 1031 1032 1033 uint8_t avdtp_request_can_send_now_acceptor(avdtp_connection_t * connection, uint16_t l2cap_cid){ 1034 if (!connection) return AVDTP_CONNECTION_DOES_NOT_EXIST; 1035 connection->wait_to_send_acceptor = 1; 1036 l2cap_request_can_send_now_event(l2cap_cid); 1037 return ERROR_CODE_SUCCESS; 1038 } 1039 1040 uint8_t avdtp_request_can_send_now_initiator(avdtp_connection_t * connection, uint16_t l2cap_cid){ 1041 if (!connection) return AVDTP_CONNECTION_DOES_NOT_EXIST; 1042 connection->wait_to_send_initiator = 1; 1043 l2cap_request_can_send_now_event(l2cap_cid); 1044 return ERROR_CODE_SUCCESS; 1045 } 1046 1047 uint8_t avdtp_request_can_send_now_self(avdtp_connection_t * connection, uint16_t l2cap_cid){ 1048 if (!connection) return AVDTP_CONNECTION_DOES_NOT_EXIST; 1049 connection->wait_to_send_self = 1; 1050 l2cap_request_can_send_now_event(l2cap_cid); 1051 return ERROR_CODE_SUCCESS; 1052 } 1053 1054 uint8_t avdtp_local_seid(avdtp_stream_endpoint_t * stream_endpoint){ 1055 if (!stream_endpoint) return 0; 1056 return stream_endpoint->sep.seid; 1057 1058 } 1059 1060 uint8_t avdtp_remote_seid(avdtp_stream_endpoint_t * stream_endpoint){ 1061 if (!stream_endpoint) return AVDTP_INVALID_SEP_SEID; 1062 return stream_endpoint->remote_sep.seid; 1063 } 1064 1065 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){ 1066 if (!callback) return; 1067 uint8_t event[14]; 1068 int pos = 0; 1069 event[pos++] = HCI_EVENT_A2DP_META; 1070 event[pos++] = sizeof(event) - 2; 1071 event[pos++] = A2DP_SUBEVENT_STREAM_ESTABLISHED; 1072 little_endian_store_16(event, pos, cid); 1073 pos += 2; 1074 reverse_bd_addr(addr,&event[pos]); 1075 pos += 6; 1076 event[pos++] = local_seid; 1077 event[pos++] = remote_seid; 1078 event[pos++] = status; 1079 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 1080 } 1081