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 #include <stdint.h> 41 #include <string.h> 42 43 #include "btstack.h" 44 #include "avdtp.h" 45 #include "avdtp_util.h" 46 47 #define MAX_MEDIA_CODEC_INFORMATION_LENGTH 100 48 49 static const char * avdtp_si_name[] = { 50 "ERROR", 51 "AVDTP_SI_DISCOVER", 52 "AVDTP_SI_GET_CAPABILITIES", 53 "AVDTP_SI_SET_CONFIGURATION", 54 "AVDTP_SI_GET_CONFIGURATION", 55 "AVDTP_SI_RECONFIGURE", 56 "AVDTP_SI_OPEN", 57 "AVDTP_SI_START", 58 "AVDTP_SI_CLOSE", 59 "AVDTP_SI_SUSPEND", 60 "AVDTP_SI_ABORT", 61 "AVDTP_SI_SECURITY_CONTROL", 62 "AVDTP_SI_GET_ALL_CAPABILITIES", 63 "AVDTP_SI_DELAY_REPORT" 64 }; 65 const char * avdtp_si2str(uint16_t index){ 66 if ((index <= 0) || (index >= sizeof(avdtp_si_name)/sizeof(avdtp_si_name[0]) )) return avdtp_si_name[0]; 67 return avdtp_si_name[index]; 68 } 69 70 void avdtp_reset_stream_endpoint(avdtp_stream_endpoint_t * stream_endpoint){ 71 stream_endpoint->media_con_handle = 0; 72 stream_endpoint->l2cap_media_cid = 0; 73 stream_endpoint->l2cap_reporting_cid = 0; 74 stream_endpoint->l2cap_recovery_cid = 0; 75 76 stream_endpoint->connection = NULL; 77 stream_endpoint->state = AVDTP_STREAM_ENDPOINT_IDLE; 78 stream_endpoint->acceptor_config_state = AVDTP_ACCEPTOR_STREAM_CONFIG_IDLE; 79 stream_endpoint->initiator_config_state = AVDTP_INITIATOR_STREAM_CONFIG_IDLE; 80 81 stream_endpoint->sep.in_use = 0; 82 memset(&stream_endpoint->remote_sep, 0, sizeof(avdtp_sep_t)); 83 // memset(&stream_endpoint->remote_capabilities, 0, sizeof(avdtp_capabilities_t)); 84 // memset(&stream_endpoint->remote_configuration, 0, sizeof(avdtp_capabilities_t)); 85 86 stream_endpoint->remote_capabilities_bitmap = 0; 87 stream_endpoint->remote_configuration_bitmap = 0; 88 89 stream_endpoint->media_disconnect = 0; 90 stream_endpoint->media_connect = 0; 91 stream_endpoint->start_stream = 0; 92 stream_endpoint->stop_stream = 0; 93 stream_endpoint->send_stream = 0; 94 stream_endpoint->abort_stream = 0; 95 stream_endpoint->suspend_stream = 0; 96 stream_endpoint->sequence_number = 0; 97 } 98 99 avdtp_stream_endpoint_t * avdtp_get_stream_endpoint_for_seid(uint16_t seid, avdtp_context_t * context){ 100 btstack_linked_list_iterator_t it; 101 btstack_linked_list_iterator_init(&it, &context->stream_endpoints); 102 while (btstack_linked_list_iterator_has_next(&it)){ 103 avdtp_stream_endpoint_t * stream_endpoint = (avdtp_stream_endpoint_t *)btstack_linked_list_iterator_next(&it); 104 if (stream_endpoint->sep.seid == seid){ 105 return stream_endpoint; 106 } 107 } 108 return NULL; 109 } 110 111 avdtp_connection_t * avdtp_get_connection_for_bd_addr(bd_addr_t addr, avdtp_context_t * context){ 112 btstack_linked_list_iterator_t it; 113 btstack_linked_list_iterator_init(&it, &context->connections); 114 while (btstack_linked_list_iterator_has_next(&it)){ 115 avdtp_connection_t * connection = (avdtp_connection_t *)btstack_linked_list_iterator_next(&it); 116 if (memcmp(addr, connection->remote_addr, 6) != 0) continue; 117 return connection; 118 } 119 return NULL; 120 } 121 122 avdtp_connection_t * avdtp_get_connection_for_avdtp_cid(uint16_t avdtp_cid, avdtp_context_t * context){ 123 btstack_linked_list_iterator_t it; 124 btstack_linked_list_iterator_init(&it, &context->connections); 125 while (btstack_linked_list_iterator_has_next(&it)){ 126 avdtp_connection_t * connection = (avdtp_connection_t *)btstack_linked_list_iterator_next(&it); 127 if (connection->avdtp_cid != avdtp_cid) continue; 128 return connection; 129 } 130 return NULL; 131 } 132 133 avdtp_connection_t * avdtp_get_connection_for_l2cap_signaling_cid(uint16_t l2cap_cid, avdtp_context_t * context){ 134 btstack_linked_list_iterator_t it; 135 btstack_linked_list_iterator_init(&it, &context->connections); 136 while (btstack_linked_list_iterator_has_next(&it)){ 137 avdtp_connection_t * connection = (avdtp_connection_t *)btstack_linked_list_iterator_next(&it); 138 if (connection->l2cap_signaling_cid != l2cap_cid) continue; 139 return connection; 140 } 141 return NULL; 142 } 143 144 avdtp_stream_endpoint_t * avdtp_get_stream_endpoint_for_l2cap_cid(uint16_t l2cap_cid, avdtp_context_t * context){ 145 btstack_linked_list_iterator_t it; 146 btstack_linked_list_iterator_init(&it, &context->stream_endpoints); 147 while (btstack_linked_list_iterator_has_next(&it)){ 148 avdtp_stream_endpoint_t * stream_endpoint = (avdtp_stream_endpoint_t *)btstack_linked_list_iterator_next(&it); 149 if (stream_endpoint->l2cap_media_cid == l2cap_cid){ 150 return stream_endpoint; 151 } 152 if (stream_endpoint->l2cap_reporting_cid == l2cap_cid){ 153 return stream_endpoint; 154 } 155 if (stream_endpoint->l2cap_recovery_cid == l2cap_cid){ 156 return stream_endpoint; 157 } 158 } 159 return NULL; 160 } 161 162 avdtp_stream_endpoint_t * avdtp_get_stream_endpoint_for_signaling_cid(uint16_t l2cap_cid, avdtp_context_t * context){ 163 btstack_linked_list_iterator_t it; 164 btstack_linked_list_iterator_init(&it, &context->stream_endpoints); 165 while (btstack_linked_list_iterator_has_next(&it)){ 166 avdtp_stream_endpoint_t * stream_endpoint = (avdtp_stream_endpoint_t *)btstack_linked_list_iterator_next(&it); 167 if (stream_endpoint->connection){ 168 if (stream_endpoint->connection->l2cap_signaling_cid == l2cap_cid){ 169 return stream_endpoint; 170 } 171 } 172 } 173 return NULL; 174 } 175 176 avdtp_stream_endpoint_t * avdtp_get_stream_endpoint_with_seid(uint8_t seid, avdtp_context_t * context){ 177 btstack_linked_list_iterator_t it; 178 btstack_linked_list_iterator_init(&it, &context->stream_endpoints); 179 while (btstack_linked_list_iterator_has_next(&it)){ 180 avdtp_stream_endpoint_t * stream_endpoint = (avdtp_stream_endpoint_t *)btstack_linked_list_iterator_next(&it); 181 if (stream_endpoint->sep.seid == seid){ 182 return stream_endpoint; 183 } 184 } 185 return NULL; 186 } 187 188 avdtp_stream_endpoint_t * avdtp_get_stream_endpoint_associated_with_acp_seid(uint16_t acp_seid, avdtp_context_t * context){ 189 btstack_linked_list_iterator_t it; 190 btstack_linked_list_iterator_init(&it, &context->stream_endpoints); 191 while (btstack_linked_list_iterator_has_next(&it)){ 192 avdtp_stream_endpoint_t * stream_endpoint = (avdtp_stream_endpoint_t *)btstack_linked_list_iterator_next(&it); 193 if (stream_endpoint->remote_sep.seid == acp_seid){ 194 return stream_endpoint; 195 } 196 } 197 return NULL; 198 } 199 200 int get_bit16(uint16_t bitmap, int position){ 201 return (bitmap >> position) & 1; 202 } 203 204 uint16_t store_bit16(uint16_t bitmap, int position, uint8_t value){ 205 if (value){ 206 bitmap |= 1 << position; 207 } else { 208 bitmap &= ~ (1 << position); 209 } 210 return bitmap; 211 } 212 213 avdtp_message_type_t avdtp_get_signaling_packet_type(uint8_t * packet){ 214 return (avdtp_message_type_t) (packet[0] & 0x03); 215 } 216 217 int avdtp_read_signaling_header(avdtp_signaling_packet_t * signaling_header, uint8_t * packet, uint16_t size){ 218 int pos = 0; 219 if (size < 2) return pos; 220 signaling_header->transaction_label = packet[pos] >> 4; 221 signaling_header->packet_type = (avdtp_packet_type_t)((packet[pos] >> 2) & 0x03); 222 signaling_header->message_type = (avdtp_message_type_t) (packet[pos] & 0x03); 223 pos++; 224 memset(signaling_header->command, 0, sizeof(signaling_header->command)); 225 switch (signaling_header->packet_type){ 226 case AVDTP_SINGLE_PACKET: 227 signaling_header->num_packets = 0; 228 signaling_header->offset = 0; 229 signaling_header->size = 0; 230 break; 231 case AVDTP_END_PACKET: 232 signaling_header->num_packets = 0; 233 break; 234 case AVDTP_START_PACKET: 235 signaling_header->num_packets = packet[pos++]; 236 signaling_header->size = 0; 237 signaling_header->offset = 0; 238 break; 239 case AVDTP_CONTINUE_PACKET: 240 if (signaling_header->num_packets <= 0) { 241 log_info(" ERROR: wrong num fragmented packets\n"); 242 break; 243 } 244 signaling_header->num_packets--; 245 break; 246 } 247 signaling_header->signal_identifier = (avdtp_signal_identifier_t)(packet[pos++] & 0x3f); 248 return pos; 249 } 250 251 int avdtp_pack_service_capabilities(uint8_t * buffer, int size, avdtp_capabilities_t caps, avdtp_service_category_t category, uint8_t pack_all_capabilities){ 252 UNUSED(size); 253 254 int i; 255 // pos = 0 reserved for length 256 int pos = 1; 257 switch(category){ 258 case AVDTP_MEDIA_TRANSPORT: 259 case AVDTP_REPORTING: 260 break; 261 case AVDTP_DELAY_REPORTING: 262 if (!pack_all_capabilities) break; 263 break; 264 case AVDTP_RECOVERY: 265 buffer[pos++] = caps.recovery.recovery_type; // 0x01=RFC2733 266 buffer[pos++] = caps.recovery.maximum_recovery_window_size; 267 buffer[pos++] = caps.recovery.maximum_number_media_packets; 268 break; 269 case AVDTP_CONTENT_PROTECTION: 270 buffer[pos++] = caps.content_protection.cp_type_value_len + 2; 271 big_endian_store_16(buffer, pos, caps.content_protection.cp_type); 272 pos += 2; 273 (void)memcpy(buffer + pos, caps.content_protection.cp_type_value, 274 caps.content_protection.cp_type_value_len); 275 break; 276 case AVDTP_HEADER_COMPRESSION: 277 buffer[pos++] = (caps.header_compression.back_ch << 7) | (caps.header_compression.media << 6) | (caps.header_compression.recovery << 5); 278 break; 279 case AVDTP_MULTIPLEXING: 280 buffer[pos++] = caps.multiplexing_mode.fragmentation << 7; 281 for (i=0; i<caps.multiplexing_mode.transport_identifiers_num; i++){ 282 buffer[pos++] = caps.multiplexing_mode.transport_session_identifiers[i] << 7; 283 buffer[pos++] = caps.multiplexing_mode.tcid[i] << 7; 284 // media, reporting. recovery 285 } 286 break; 287 case AVDTP_MEDIA_CODEC: 288 buffer[pos++] = ((uint8_t)caps.media_codec.media_type) << 4; 289 buffer[pos++] = (uint8_t)caps.media_codec.media_codec_type; 290 for (i = 0; i<caps.media_codec.media_codec_information_len; i++){ 291 buffer[pos++] = caps.media_codec.media_codec_information[i]; 292 } 293 break; 294 default: 295 break; 296 } 297 buffer[0] = pos - 1; // length 298 return pos; 299 } 300 301 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){ 302 connection->error_code = 0; 303 304 if ((category == AVDTP_SERVICE_CATEGORY_INVALID_0) || 305 ((category == AVDTP_SERVICE_CATEGORY_INVALID_FF) && (signal_identifier == AVDTP_SI_RECONFIGURE))){ 306 log_info(" ERROR: BAD SERVICE CATEGORY %d\n", category); 307 connection->reject_service_category = category; 308 connection->error_code = BAD_SERV_CATEGORY; 309 return 1; 310 } 311 312 if (signal_identifier == AVDTP_SI_RECONFIGURE){ 313 if ( (category != AVDTP_CONTENT_PROTECTION) && (category != AVDTP_MEDIA_CODEC)){ 314 log_info(" ERROR: REJECT CATEGORY, INVALID_CAPABILITIES\n"); 315 connection->reject_service_category = category; 316 connection->error_code = INVALID_CAPABILITIES; 317 return 1; 318 } 319 } 320 321 switch(category){ 322 case AVDTP_MEDIA_TRANSPORT: 323 if (cap_len != 0){ 324 log_info(" ERROR: REJECT CATEGORY, BAD_MEDIA_TRANSPORT\n"); 325 connection->reject_service_category = category; 326 connection->error_code = BAD_MEDIA_TRANSPORT_FORMAT; 327 return 1; 328 } 329 break; 330 case AVDTP_REPORTING: 331 case AVDTP_DELAY_REPORTING: 332 if (cap_len != 0){ 333 log_info(" ERROR: REJECT CATEGORY, BAD_LENGTH\n"); 334 connection->reject_service_category = category; 335 connection->error_code = BAD_LENGTH; 336 return 1; 337 } 338 break; 339 case AVDTP_RECOVERY: 340 if (cap_len != 3){ 341 log_info(" ERROR: REJECT CATEGORY, BAD_MEDIA_TRANSPORT\n"); 342 connection->reject_service_category = category; 343 connection->error_code = BAD_RECOVERY_FORMAT; 344 return 1; 345 } 346 break; 347 case AVDTP_CONTENT_PROTECTION: 348 if (cap_len < 2){ 349 log_info(" ERROR: REJECT CATEGORY, BAD_CP_FORMAT\n"); 350 connection->reject_service_category = category; 351 connection->error_code = BAD_CP_FORMAT; 352 return 1; 353 } 354 break; 355 case AVDTP_HEADER_COMPRESSION: 356 // TODO: find error code for bad header compression 357 if (cap_len != 1){ 358 log_info(" ERROR: REJECT CATEGORY, BAD_HEADER_COMPRESSION\n"); 359 connection->reject_service_category = category; 360 connection->error_code = BAD_RECOVERY_FORMAT; 361 return 1; 362 } 363 break; 364 case AVDTP_MULTIPLEXING: 365 break; 366 case AVDTP_MEDIA_CODEC: 367 break; 368 default: 369 break; 370 } 371 return 0; 372 } 373 374 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){ 375 376 int i; 377 378 uint16_t registered_service_categories = 0; 379 uint16_t to_process = size; 380 381 while (to_process >= 2){ 382 383 avdtp_service_category_t category = (avdtp_service_category_t) packet[0]; 384 uint8_t cap_len = packet[1]; 385 packet += 2; 386 to_process -= 2; 387 388 if (cap_len > to_process){ 389 connection->reject_service_category = category; 390 connection->error_code = BAD_LENGTH; 391 return 0; 392 } 393 394 if (avdtp_unpack_service_capabilities_has_errors(connection, signal_identifier, category, cap_len)) return 0; 395 396 int category_valid = 1; 397 398 uint8_t * data = packet; 399 uint16_t pos = 0; 400 401 switch(category){ 402 case AVDTP_RECOVERY: 403 caps->recovery.recovery_type = data[pos++]; 404 caps->recovery.maximum_recovery_window_size = data[pos++]; 405 caps->recovery.maximum_number_media_packets = data[pos++]; 406 break; 407 case AVDTP_CONTENT_PROTECTION: 408 caps->content_protection.cp_type = big_endian_read_16(data, 0); 409 caps->content_protection.cp_type_value_len = cap_len - 2; 410 // connection->reject_service_category = category; 411 // connection->error_code = UNSUPPORTED_CONFIGURATION; 412 // support for content protection goes here 413 break; 414 case AVDTP_HEADER_COMPRESSION: 415 caps->header_compression.back_ch = (data[0] >> 7) & 1; 416 caps->header_compression.media = (data[0] >> 6) & 1; 417 caps->header_compression.recovery = (data[0] >> 5) & 1; 418 break; 419 case AVDTP_MULTIPLEXING: 420 caps->multiplexing_mode.fragmentation = (data[pos++] >> 7) & 1; 421 // read [tsid, tcid] for media, reporting. recovery respectively 422 caps->multiplexing_mode.transport_identifiers_num = 3; 423 for (i=0; i<caps->multiplexing_mode.transport_identifiers_num; i++){ 424 caps->multiplexing_mode.transport_session_identifiers[i] = (data[pos++] >> 7) & 1; 425 caps->multiplexing_mode.tcid[i] = (data[pos++] >> 7) & 1; 426 } 427 break; 428 case AVDTP_MEDIA_CODEC: 429 caps->media_codec.media_type = (avdtp_media_type_t)(data[pos++] >> 4); 430 caps->media_codec.media_codec_type = (avdtp_media_codec_type_t)(data[pos++]); 431 caps->media_codec.media_codec_information_len = cap_len - 2; 432 caps->media_codec.media_codec_information = &data[pos++]; 433 break; 434 case AVDTP_MEDIA_TRANSPORT: 435 case AVDTP_REPORTING: 436 case AVDTP_DELAY_REPORTING: 437 break; 438 default: 439 category_valid = 0; 440 break; 441 } 442 443 if (category_valid) { 444 registered_service_categories = store_bit16(registered_service_categories, category, 1); 445 } 446 447 packet += cap_len; 448 to_process -= cap_len; 449 } 450 451 return registered_service_categories; 452 } 453 454 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){ 455 if (signaling_packet->offset) return; 456 uint8_t pack_all_capabilities = 1; 457 signaling_packet->message_type = AVDTP_RESPONSE_ACCEPT_MSG; 458 int i; 459 460 signaling_packet->size = 0; 461 memset(signaling_packet->command, 0 , sizeof(signaling_packet->command)); 462 463 464 switch (identifier) { 465 case AVDTP_SI_GET_CAPABILITIES: 466 pack_all_capabilities = 0; 467 break; 468 case AVDTP_SI_GET_ALL_CAPABILITIES: 469 pack_all_capabilities = 1; 470 break; 471 case AVDTP_SI_SET_CONFIGURATION: 472 signaling_packet->command[signaling_packet->size++] = signaling_packet->acp_seid << 2; 473 signaling_packet->command[signaling_packet->size++] = signaling_packet->int_seid << 2; 474 signaling_packet->message_type = AVDTP_CMD_MSG; 475 break; 476 case AVDTP_SI_RECONFIGURE: 477 signaling_packet->command[signaling_packet->size++] = signaling_packet->acp_seid << 2; 478 signaling_packet->message_type = AVDTP_CMD_MSG; 479 break; 480 default: 481 log_error("avdtp_prepare_capabilities wrong identifier %d", identifier); 482 break; 483 } 484 485 for (i = 1; i < 9; i++){ 486 int registered_category = get_bit16(registered_service_categories, i); 487 if (!registered_category && (identifier == AVDTP_SI_SET_CONFIGURATION)){ 488 // TODO: introduce bitmap of mandatory categories 489 if (i == 1){ 490 registered_category = 1; 491 } 492 } 493 if (registered_category){ 494 // service category 495 signaling_packet->command[signaling_packet->size++] = i; 496 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); 497 } 498 } 499 signaling_packet->signal_identifier = (avdtp_signal_identifier_t)identifier; 500 signaling_packet->transaction_label = transaction_label; 501 } 502 503 int avdtp_signaling_create_fragment(uint16_t cid, avdtp_signaling_packet_t * signaling_packet, uint8_t * out_buffer) { 504 int mtu = l2cap_get_remote_mtu_for_local_cid(cid); 505 int data_len = 0; 506 507 uint16_t offset = signaling_packet->offset; 508 uint16_t pos = 1; 509 510 if (offset == 0){ 511 if (signaling_packet->size <= (mtu - 2)){ 512 signaling_packet->packet_type = AVDTP_SINGLE_PACKET; 513 out_buffer[pos++] = signaling_packet->signal_identifier; 514 data_len = signaling_packet->size; 515 } else { 516 signaling_packet->packet_type = AVDTP_START_PACKET; 517 out_buffer[pos++] = (mtu + signaling_packet->size)/ (mtu-1); 518 out_buffer[pos++] = signaling_packet->signal_identifier; 519 data_len = mtu - 3; 520 signaling_packet->offset = data_len; 521 } 522 } else { 523 int remaining_bytes = signaling_packet->size - offset; 524 if (remaining_bytes <= (mtu - 1)){ 525 signaling_packet->packet_type = AVDTP_END_PACKET; 526 data_len = remaining_bytes; 527 signaling_packet->offset = 0; 528 } else{ 529 signaling_packet->packet_type = AVDTP_CONTINUE_PACKET; 530 data_len = mtu - 1; 531 signaling_packet->offset += data_len; 532 } 533 } 534 out_buffer[0] = avdtp_header(signaling_packet->transaction_label, signaling_packet->packet_type, signaling_packet->message_type); 535 (void)memcpy(out_buffer + pos, signaling_packet->command + offset, 536 data_len); 537 pos += data_len; 538 return pos; 539 } 540 541 542 void avdtp_signaling_emit_connection_established(btstack_packet_handler_t callback, uint16_t avdtp_cid, bd_addr_t addr, uint8_t status){ 543 if (!callback) return; 544 uint8_t event[12]; 545 int pos = 0; 546 event[pos++] = HCI_EVENT_AVDTP_META; 547 event[pos++] = sizeof(event) - 2; 548 event[pos++] = AVDTP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED; 549 little_endian_store_16(event, pos, avdtp_cid); 550 pos += 2; 551 reverse_bd_addr(addr,&event[pos]); 552 pos += 6; 553 event[pos++] = status; 554 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 555 } 556 557 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){ 558 if (!callback) return; 559 uint8_t event[8]; 560 int pos = 0; 561 event[pos++] = HCI_EVENT_AVDTP_META; 562 event[pos++] = sizeof(event) - 2; 563 event[pos++] = AVDTP_SUBEVENT_STREAMING_CAN_SEND_MEDIA_PACKET_NOW; 564 little_endian_store_16(event, pos, avdtp_cid); 565 pos += 2; 566 event[pos++] = seid; 567 little_endian_store_16(event, pos, sequence_number); 568 pos += 2; 569 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 570 } 571 572 void avdtp_signaling_emit_connection_released(btstack_packet_handler_t callback, uint16_t avdtp_cid){ 573 if (!callback) return; 574 uint8_t event[5]; 575 int pos = 0; 576 event[pos++] = HCI_EVENT_AVDTP_META; 577 event[pos++] = sizeof(event) - 2; 578 event[pos++] = AVDTP_SUBEVENT_SIGNALING_CONNECTION_RELEASED; 579 little_endian_store_16(event, pos, avdtp_cid); 580 pos += 2; 581 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 582 } 583 584 void avdtp_streaming_emit_connection_released(btstack_packet_handler_t callback, uint16_t avdtp_cid, uint8_t local_seid){ 585 if (!callback) return; 586 uint8_t event[6]; 587 int pos = 0; 588 event[pos++] = HCI_EVENT_AVDTP_META; 589 event[pos++] = sizeof(event) - 2; 590 event[pos++] = AVDTP_SUBEVENT_STREAMING_CONNECTION_RELEASED; 591 little_endian_store_16(event, pos, avdtp_cid); 592 pos += 2; 593 event[pos++] = local_seid; 594 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 595 } 596 597 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){ 598 if (!callback) return; 599 uint8_t event[14]; 600 int pos = 0; 601 event[pos++] = HCI_EVENT_AVDTP_META; 602 event[pos++] = sizeof(event) - 2; 603 event[pos++] = AVDTP_SUBEVENT_STREAMING_CONNECTION_ESTABLISHED; 604 little_endian_store_16(event, pos, avdtp_cid); 605 pos += 2; 606 reverse_bd_addr(addr,&event[pos]); 607 pos += 6; 608 event[pos++] = local_seid; 609 event[pos++] = remote_seid; 610 event[pos++] = status; 611 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 612 } 613 614 void avdtp_signaling_emit_sep(btstack_packet_handler_t callback, uint16_t avdtp_cid, avdtp_sep_t sep){ 615 if (!callback) return; 616 uint8_t event[9]; 617 int pos = 0; 618 event[pos++] = HCI_EVENT_AVDTP_META; 619 event[pos++] = sizeof(event) - 2; 620 event[pos++] = AVDTP_SUBEVENT_SIGNALING_SEP_FOUND; 621 little_endian_store_16(event, pos, avdtp_cid); 622 pos += 2; 623 event[pos++] = sep.seid; 624 event[pos++] = sep.in_use; 625 event[pos++] = sep.media_type; 626 event[pos++] = sep.type; 627 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 628 } 629 630 void avdtp_signaling_emit_sep_done(btstack_packet_handler_t callback, uint16_t avdtp_cid){ 631 if (!callback) return; 632 uint8_t event[5]; 633 int pos = 0; 634 event[pos++] = HCI_EVENT_AVDTP_META; 635 event[pos++] = sizeof(event) - 2; 636 event[pos++] = AVDTP_SUBEVENT_SIGNALING_SEP_DICOVERY_DONE; 637 little_endian_store_16(event, pos, avdtp_cid); 638 pos += 2; 639 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 640 } 641 642 void avdtp_signaling_emit_delay(btstack_packet_handler_t callback, uint16_t avdtp_cid, uint8_t local_seid, uint16_t delay){ 643 if (!callback) return; 644 uint8_t event[8]; 645 int pos = 0; 646 event[pos++] = HCI_EVENT_AVDTP_META; 647 event[pos++] = sizeof(event) - 2; 648 event[pos++] = AVDTP_SUBEVENT_SIGNALING_DELAY_REPORT; 649 little_endian_store_16(event, pos, avdtp_cid); 650 pos += 2; 651 event[pos++] = local_seid; 652 little_endian_store_16(event, pos, delay); 653 pos += 2; 654 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 655 } 656 657 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){ 658 if (!callback) return; 659 uint8_t event[8]; 660 int pos = 0; 661 event[pos++] = HCI_EVENT_AVDTP_META; 662 event[pos++] = sizeof(event) - 2; 663 event[pos++] = AVDTP_SUBEVENT_SIGNALING_ACCEPT; 664 little_endian_store_16(event, pos, avdtp_cid); 665 pos += 2; 666 event[pos++] = local_seid; 667 event[pos++] = is_initiator ? 1 : 0; 668 event[pos++] = identifier; 669 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 670 } 671 672 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){ 673 if (!callback) return; 674 uint8_t event[8]; 675 int pos = 0; 676 event[pos++] = HCI_EVENT_AVDTP_META; 677 event[pos++] = sizeof(event) - 2; 678 event[pos++] = AVDTP_SUBEVENT_SIGNALING_REJECT; 679 little_endian_store_16(event, pos, avdtp_cid); 680 pos += 2; 681 event[pos++] = local_seid; 682 event[pos++] = is_initiator ? 1 : 0; 683 event[pos++] = identifier; 684 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 685 } 686 687 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){ 688 if (!callback) return; 689 uint8_t event[8]; 690 int pos = 0; 691 event[pos++] = HCI_EVENT_AVDTP_META; 692 event[pos++] = sizeof(event) - 2; 693 event[pos++] = AVDTP_SUBEVENT_SIGNALING_GENERAL_REJECT; 694 little_endian_store_16(event, pos, avdtp_cid); 695 pos += 2; 696 event[pos++] = local_seid; 697 event[pos++] = is_initiator ? 1 : 0; 698 event[pos++] = identifier; 699 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 700 } 701 702 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){ 703 if (!callback) return; 704 uint8_t event[15]; 705 int pos = 0; 706 event[pos++] = HCI_EVENT_AVDTP_META; 707 event[pos++] = sizeof(event) - 2; 708 event[pos++] = AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CAPABILITY; 709 little_endian_store_16(event, pos, avdtp_cid); 710 pos += 2; 711 event[pos++] = local_seid; 712 event[pos++] = remote_seid; 713 event[pos++] = media_codec.media_type; 714 event[pos++] = media_codec.media_codec_information[0] >> 4; 715 event[pos++] = media_codec.media_codec_information[0] & 0x0F; 716 event[pos++] = media_codec.media_codec_information[1] >> 4; 717 event[pos++] = (media_codec.media_codec_information[1] & 0x0F) >> 2; 718 event[pos++] = media_codec.media_codec_information[1] & 0x03; 719 event[pos++] = media_codec.media_codec_information[2]; 720 event[pos++] = media_codec.media_codec_information[3]; 721 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 722 } 723 724 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){ 725 if (!callback) return; 726 uint8_t event[7]; 727 int pos = 0; 728 event[pos++] = HCI_EVENT_AVDTP_META; 729 event[pos++] = sizeof(event) - 2; 730 event[pos++] = capability_subevent_id; 731 little_endian_store_16(event, pos, avdtp_cid); 732 pos += 2; 733 event[pos++] = local_seid; 734 event[pos++] = remote_seid; 735 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 736 } 737 738 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){ 739 avdtp_signaling_emit_capability(callback, AVDTP_SUBEVENT_SIGNALING_MEDIA_TRANSPORT_CAPABILITY, avdtp_cid, local_seid, remote_seid); 740 } 741 742 static void avdtp_signaling_emit_reporting_capability(btstack_packet_handler_t callback, uint16_t avdtp_cid, uint8_t local_seid, uint8_t remote_seid){ 743 avdtp_signaling_emit_capability(callback, AVDTP_SUBEVENT_SIGNALING_REPORTING_CAPABILITY, avdtp_cid, local_seid, remote_seid); 744 } 745 746 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){ 747 avdtp_signaling_emit_capability(callback, AVDTP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY, avdtp_cid, local_seid, remote_seid); 748 } 749 750 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){ 751 if (!callback) return; 752 uint8_t event[10]; 753 int pos = 0; 754 event[pos++] = HCI_EVENT_AVDTP_META; 755 event[pos++] = sizeof(event) - 2; 756 event[pos++] = AVDTP_SUBEVENT_SIGNALING_RECOVERY_CAPABILITY; 757 little_endian_store_16(event, pos, avdtp_cid); 758 pos += 2; 759 event[pos++] = local_seid; 760 event[pos++] = remote_seid; 761 event[pos++] = recovery->recovery_type; 762 event[pos++] = recovery->maximum_recovery_window_size; 763 event[pos++] = recovery->maximum_number_media_packets; 764 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 765 } 766 767 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){ 768 if (!callback) return; 769 uint8_t event[22]; 770 int pos = 0; 771 event[pos++] = HCI_EVENT_AVDTP_META; 772 event[pos++] = sizeof(event) - 2; 773 event[pos++] = AVDTP_SUBEVENT_SIGNALING_CONTENT_PROTECTION_CAPABILITY; 774 little_endian_store_16(event, pos, avdtp_cid); 775 pos += 2; 776 event[pos++] = local_seid; 777 event[pos++] = remote_seid; 778 779 little_endian_store_16(event, pos, content_protection->cp_type); 780 pos += 2; 781 little_endian_store_16(event, pos, content_protection->cp_type_value_len); 782 pos += 2; 783 784 //TODO: reserve place for value 785 if (content_protection->cp_type_value_len < 10){ 786 (void)memcpy(event + pos, content_protection->cp_type_value, 787 content_protection->cp_type_value_len); 788 } 789 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 790 } 791 792 793 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){ 794 if (!callback) return; 795 uint8_t event[10]; 796 int pos = 0; 797 event[pos++] = HCI_EVENT_AVDTP_META; 798 event[pos++] = sizeof(event) - 2; 799 event[pos++] = AVDTP_SUBEVENT_SIGNALING_HEADER_COMPRESSION_CAPABILITY; 800 little_endian_store_16(event, pos, avdtp_cid); 801 pos += 2; 802 event[pos++] = local_seid; 803 event[pos++] = remote_seid; 804 event[pos++] = header_compression->back_ch; 805 event[pos++] = header_compression->media; 806 event[pos++] = header_compression->recovery; 807 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 808 } 809 810 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){ 811 if (!callback) return; 812 uint8_t event[15]; 813 int pos = 0; 814 event[pos++] = HCI_EVENT_AVDTP_META; 815 event[pos++] = sizeof(event) - 2; 816 event[pos++] = AVDTP_SUBEVENT_SIGNALING_MULTIPLEXING_CAPABILITY; 817 little_endian_store_16(event, pos, avdtp_cid); 818 pos += 2; 819 event[pos++] = local_seid; 820 event[pos++] = remote_seid; 821 822 event[pos++] = multiplexing_mode->fragmentation; 823 event[pos++] = multiplexing_mode->transport_identifiers_num; 824 825 int i; 826 for (i = 0; i < 3; i++){ 827 event[pos++] = multiplexing_mode->transport_session_identifiers[i]; 828 } 829 for (i = 0; i < 3; i++){ 830 event[pos++] = multiplexing_mode->tcid[i]; 831 } 832 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 833 } 834 835 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){ 836 if (!callback) return; 837 uint8_t event[MAX_MEDIA_CODEC_INFORMATION_LENGTH + 12]; 838 int pos = 0; 839 event[pos++] = HCI_EVENT_AVDTP_META; 840 event[pos++] = sizeof(event) - 2; 841 event[pos++] = AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CAPABILITY; 842 little_endian_store_16(event, pos, avdtp_cid); 843 pos += 2; 844 event[pos++] = local_seid; 845 event[pos++] = remote_seid; 846 event[pos++] = media_codec.media_type; 847 little_endian_store_16(event, pos, media_codec.media_codec_type); 848 pos += 2; 849 little_endian_store_16(event, pos, media_codec.media_codec_information_len); 850 pos += 2; 851 (void)memcpy(event + pos, media_codec.media_codec_information, 852 btstack_min(media_codec.media_codec_information_len, MAX_MEDIA_CODEC_INFORMATION_LENGTH)); 853 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 854 } 855 856 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, 857 avdtp_media_type_t media_type, const uint8_t * media_codec_information, uint8_t reconfigure) { 858 if (!callback) return; 859 uint8_t event[16 + 2]; 860 int pos = 0; 861 event[pos++] = HCI_EVENT_AVDTP_META; 862 event[pos++] = sizeof(event) - 2; 863 864 event[pos++] = AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION; 865 little_endian_store_16(event, pos, avdtp_cid); 866 pos += 2; 867 event[pos++] = local_seid; 868 event[pos++] = remote_seid; 869 event[pos++] = reconfigure; 870 871 872 uint8_t sampling_frequency_bitmap = media_codec_information[0] >> 4; 873 uint8_t channel_mode_bitmap = media_codec_information[0] & 0x0F; 874 uint8_t block_length_bitmap = media_codec_information[1] >> 4; 875 uint8_t subbands_bitmap = (media_codec_information[1] & 0x0F) >> 2; 876 877 uint8_t num_channels = 0; 878 if ((channel_mode_bitmap & AVDTP_SBC_JOINT_STEREO) || 879 (channel_mode_bitmap & AVDTP_SBC_STEREO) || 880 (channel_mode_bitmap & AVDTP_SBC_DUAL_CHANNEL)) { 881 num_channels = 2; 882 } else if (channel_mode_bitmap & AVDTP_SBC_MONO) { 883 num_channels = 1; 884 } 885 886 uint16_t sampling_frequency = 0; 887 if (sampling_frequency_bitmap & AVDTP_SBC_48000) { 888 sampling_frequency = 48000; 889 } else if (sampling_frequency_bitmap & AVDTP_SBC_44100) { 890 sampling_frequency = 44100; 891 } else if (sampling_frequency_bitmap & AVDTP_SBC_32000) { 892 sampling_frequency = 32000; 893 } else if (sampling_frequency_bitmap & AVDTP_SBC_16000) { 894 sampling_frequency = 16000; 895 } 896 897 uint8_t subbands = 0; 898 if (subbands_bitmap & AVDTP_SBC_SUBBANDS_8){ 899 subbands = 8; 900 } else if (subbands_bitmap & AVDTP_SBC_SUBBANDS_4){ 901 subbands = 4; 902 } 903 904 uint8_t block_length = 0; 905 if (block_length_bitmap & AVDTP_SBC_BLOCK_LENGTH_16){ 906 block_length = 16; 907 } else if (block_length_bitmap & AVDTP_SBC_BLOCK_LENGTH_12){ 908 block_length = 12; 909 } else if (block_length_bitmap & AVDTP_SBC_BLOCK_LENGTH_8){ 910 block_length = 8; 911 } else if (block_length_bitmap & AVDTP_SBC_BLOCK_LENGTH_4){ 912 block_length = 4; 913 } 914 915 event[pos++] = media_type; 916 little_endian_store_16(event, pos, sampling_frequency); 917 pos += 2; 918 919 event[pos++] = channel_mode_bitmap; 920 event[pos++] = num_channels; 921 event[pos++] = block_length; 922 event[pos++] = subbands; 923 event[pos++] = media_codec_information[1] & 0x03; 924 event[pos++] = media_codec_information[2]; 925 event[pos++] = media_codec_information[3]; 926 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 927 } 928 929 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){ 930 if (!callback) return; 931 avdtp_signaling_emit_media_codec_sbc(callback, avdtp_cid, local_seid, remote_seid, media_type, media_codec_information, 0); 932 } 933 934 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){ 935 if (!callback) return; 936 avdtp_signaling_emit_media_codec_sbc(callback, avdtp_cid, local_seid, remote_seid, media_type, media_codec_information, 1); 937 } 938 939 940 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){ 941 uint8_t event[MAX_MEDIA_CODEC_INFORMATION_LENGTH + 13]; 942 int pos = 0; 943 event[pos++] = HCI_EVENT_AVDTP_META; 944 event[pos++] = sizeof(event) - 2; 945 event[pos++] = AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION; 946 little_endian_store_16(event, pos, avdtp_cid); 947 pos += 2; 948 event[pos++] = local_seid; 949 event[pos++] = remote_seid; 950 event[pos++] = reconfigure; 951 event[pos++] = media_codec.media_type; 952 little_endian_store_16(event, pos, media_codec.media_codec_type); 953 pos += 2; 954 little_endian_store_16(event, pos, media_codec.media_codec_information_len); 955 pos += 2; 956 957 int media_codec_len = btstack_min(MAX_MEDIA_CODEC_INFORMATION_LENGTH, media_codec.media_codec_information_len); 958 (void)memcpy(event + pos, media_codec.media_codec_information, 959 media_codec_len); 960 961 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 962 } 963 964 static void avdtp_signaling_emit_capability_done(btstack_packet_handler_t callback, uint16_t avdtp_cid, uint8_t local_seid, uint8_t remote_seid){ 965 if (!callback) return; 966 uint8_t event[7]; 967 int pos = 0; 968 event[pos++] = HCI_EVENT_AVDTP_META; 969 event[pos++] = sizeof(event) - 2; 970 event[pos++] = AVDTP_SUBEVENT_SIGNALING_CAPABILITIES_DONE; 971 little_endian_store_16(event, pos, avdtp_cid); 972 pos += 2; 973 event[pos++] = local_seid; 974 event[pos++] = remote_seid; 975 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 976 } 977 978 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){ 979 if (!callback) return; 980 avdtp_signaling_emit_media_codec_other(callback, avdtp_cid, local_seid, remote_seid, media_codec, 0); 981 } 982 983 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){ 984 if (!callback) return; 985 avdtp_signaling_emit_media_codec_other(callback, avdtp_cid, local_seid, remote_seid, media_codec, 1); 986 } 987 988 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){ 989 if (get_bit16(registered_service_categories, AVDTP_MEDIA_CODEC)){ 990 switch (capabilities->media_codec.media_codec_type){ 991 case AVDTP_CODEC_SBC: 992 avdtp_signaling_emit_media_codec_sbc_capability(callback, avdtp_cid, local_seid, remote_seid, capabilities->media_codec); 993 break; 994 default: 995 avdtp_signaling_emit_media_codec_other_capability(callback, avdtp_cid, local_seid, remote_seid, capabilities->media_codec); 996 break; 997 } 998 } 999 1000 if (get_bit16(registered_service_categories, AVDTP_MEDIA_TRANSPORT)){ 1001 avdtp_signaling_emit_media_transport_capability(callback, avdtp_cid, local_seid, remote_seid); 1002 } 1003 if (get_bit16(registered_service_categories, AVDTP_REPORTING)){ 1004 avdtp_signaling_emit_reporting_capability(callback, avdtp_cid, local_seid, remote_seid); 1005 } 1006 if (get_bit16(registered_service_categories, AVDTP_RECOVERY)){ 1007 avdtp_signaling_emit_recovery_capability(callback, avdtp_cid, local_seid, remote_seid, &capabilities->recovery); 1008 } 1009 if (get_bit16(registered_service_categories, AVDTP_CONTENT_PROTECTION)){ 1010 avdtp_signaling_emit_content_protection_capability(callback, avdtp_cid, local_seid, remote_seid, &capabilities->content_protection); 1011 } 1012 if (get_bit16(registered_service_categories, AVDTP_HEADER_COMPRESSION)){ 1013 avdtp_signaling_emit_header_compression_capability(callback, avdtp_cid, local_seid, remote_seid, &capabilities->header_compression); 1014 } 1015 if (get_bit16(registered_service_categories, AVDTP_MULTIPLEXING)){ 1016 avdtp_signaling_emit_content_multiplexing_capability(callback, avdtp_cid, local_seid, remote_seid, &capabilities->multiplexing_mode); 1017 } 1018 if (get_bit16(registered_service_categories, AVDTP_DELAY_REPORTING)){ 1019 avdtp_signaling_emit_delay_reporting_capability(callback, avdtp_cid, local_seid, remote_seid); 1020 } 1021 avdtp_signaling_emit_capability_done(callback, avdtp_cid, local_seid, remote_seid); 1022 } 1023 1024 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){ 1025 if (get_bit16(configured_service_categories, AVDTP_MEDIA_CODEC)){ 1026 switch (configuration->media_codec.media_codec_type){ 1027 case AVDTP_CODEC_SBC: 1028 avdtp_signaling_emit_media_codec_sbc_configuration(callback, avdtp_cid, local_seid, remote_seid, 1029 configuration->media_codec.media_type, configuration->media_codec.media_codec_information); 1030 break; 1031 default: 1032 avdtp_signaling_emit_media_codec_other_configuration(callback, avdtp_cid, local_seid, remote_seid, configuration->media_codec); 1033 break; 1034 } 1035 } 1036 } 1037 1038 1039 uint8_t avdtp_request_can_send_now_acceptor(avdtp_connection_t * connection, uint16_t l2cap_cid){ 1040 if (!connection) return AVDTP_CONNECTION_DOES_NOT_EXIST; 1041 connection->wait_to_send_acceptor = 1; 1042 l2cap_request_can_send_now_event(l2cap_cid); 1043 return ERROR_CODE_SUCCESS; 1044 } 1045 1046 uint8_t avdtp_request_can_send_now_initiator(avdtp_connection_t * connection, uint16_t l2cap_cid){ 1047 if (!connection) return AVDTP_CONNECTION_DOES_NOT_EXIST; 1048 connection->wait_to_send_initiator = 1; 1049 l2cap_request_can_send_now_event(l2cap_cid); 1050 return ERROR_CODE_SUCCESS; 1051 } 1052 1053 uint8_t avdtp_request_can_send_now_self(avdtp_connection_t * connection, uint16_t l2cap_cid){ 1054 if (!connection) return AVDTP_CONNECTION_DOES_NOT_EXIST; 1055 connection->wait_to_send_self = 1; 1056 l2cap_request_can_send_now_event(l2cap_cid); 1057 return ERROR_CODE_SUCCESS; 1058 } 1059 1060 uint8_t avdtp_local_seid(avdtp_stream_endpoint_t * stream_endpoint){ 1061 if (!stream_endpoint) return 0; 1062 return stream_endpoint->sep.seid; 1063 1064 } 1065 1066 uint8_t avdtp_remote_seid(avdtp_stream_endpoint_t * stream_endpoint){ 1067 if (!stream_endpoint) return AVDTP_INVALID_SEP_SEID; 1068 return stream_endpoint->remote_sep.seid; 1069 } 1070 1071 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){ 1072 if (!callback) return; 1073 uint8_t event[14]; 1074 int pos = 0; 1075 event[pos++] = HCI_EVENT_A2DP_META; 1076 event[pos++] = sizeof(event) - 2; 1077 event[pos++] = A2DP_SUBEVENT_STREAM_ESTABLISHED; 1078 little_endian_store_16(event, pos, cid); 1079 pos += 2; 1080 reverse_bd_addr(addr,&event[pos]); 1081 pos += 6; 1082 event[pos++] = local_seid; 1083 event[pos++] = remote_seid; 1084 event[pos++] = status; 1085 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 1086 } 1087