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_initialize_stream_endpoint(avdtp_stream_endpoint_t * stream_endpoint){ 74 stream_endpoint->connection = NULL; 75 stream_endpoint->state = AVDTP_STREAM_ENDPOINT_IDLE; 76 stream_endpoint->acceptor_config_state = AVDTP_ACCEPTOR_STREAM_CONFIG_IDLE; 77 stream_endpoint->initiator_config_state = AVDTP_INITIATOR_STREAM_CONFIG_IDLE; 78 stream_endpoint->remote_sep_index = AVDTP_INVALID_SEP_INDEX; 79 stream_endpoint->media_disconnect = 0; 80 stream_endpoint->sep.in_use = 0; 81 stream_endpoint->remote_sep_index = 0; 82 } 83 84 avdtp_stream_endpoint_t * avdtp_stream_endpoint_for_seid(uint16_t seid, avdtp_context_t * context){ 85 btstack_linked_list_iterator_t it; 86 btstack_linked_list_iterator_init(&it, &context->stream_endpoints); 87 while (btstack_linked_list_iterator_has_next(&it)){ 88 avdtp_stream_endpoint_t * stream_endpoint = (avdtp_stream_endpoint_t *)btstack_linked_list_iterator_next(&it); 89 if (stream_endpoint->sep.seid == seid){ 90 return stream_endpoint; 91 } 92 } 93 return NULL; 94 } 95 96 avdtp_connection_t * avdtp_connection_for_bd_addr(bd_addr_t addr, avdtp_context_t * context){ 97 btstack_linked_list_iterator_t it; 98 btstack_linked_list_iterator_init(&it, &context->connections); 99 while (btstack_linked_list_iterator_has_next(&it)){ 100 avdtp_connection_t * connection = (avdtp_connection_t *)btstack_linked_list_iterator_next(&it); 101 if (memcmp(addr, connection->remote_addr, 6) != 0) continue; 102 return connection; 103 } 104 return NULL; 105 } 106 107 avdtp_connection_t * avdtp_connection_for_avdtp_cid(uint16_t avdtp_cid, avdtp_context_t * context){ 108 btstack_linked_list_iterator_t it; 109 btstack_linked_list_iterator_init(&it, &context->connections); 110 while (btstack_linked_list_iterator_has_next(&it)){ 111 avdtp_connection_t * connection = (avdtp_connection_t *)btstack_linked_list_iterator_next(&it); 112 if (connection->avdtp_cid != avdtp_cid) continue; 113 return connection; 114 } 115 return NULL; 116 } 117 118 avdtp_connection_t * avdtp_connection_for_l2cap_signaling_cid(uint16_t l2cap_cid, avdtp_context_t * context){ 119 btstack_linked_list_iterator_t it; 120 btstack_linked_list_iterator_init(&it, &context->connections); 121 while (btstack_linked_list_iterator_has_next(&it)){ 122 avdtp_connection_t * connection = (avdtp_connection_t *)btstack_linked_list_iterator_next(&it); 123 if (connection->l2cap_signaling_cid != l2cap_cid) continue; 124 return connection; 125 } 126 return NULL; 127 } 128 129 avdtp_stream_endpoint_t * avdtp_stream_endpoint_for_l2cap_cid(uint16_t l2cap_cid, avdtp_context_t * context){ 130 btstack_linked_list_iterator_t it; 131 btstack_linked_list_iterator_init(&it, &context->stream_endpoints); 132 while (btstack_linked_list_iterator_has_next(&it)){ 133 avdtp_stream_endpoint_t * stream_endpoint = (avdtp_stream_endpoint_t *)btstack_linked_list_iterator_next(&it); 134 if (stream_endpoint->l2cap_media_cid == l2cap_cid){ 135 return stream_endpoint; 136 } 137 if (stream_endpoint->l2cap_reporting_cid == l2cap_cid){ 138 return stream_endpoint; 139 } 140 if (stream_endpoint->l2cap_recovery_cid == l2cap_cid){ 141 return stream_endpoint; 142 } 143 } 144 return NULL; 145 } 146 147 avdtp_stream_endpoint_t * avdtp_stream_endpoint_for_signaling_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->connection){ 153 if (stream_endpoint->connection->l2cap_signaling_cid == l2cap_cid){ 154 return stream_endpoint; 155 } 156 } 157 } 158 return NULL; 159 } 160 161 avdtp_stream_endpoint_t * avdtp_stream_endpoint_with_seid(uint8_t seid, avdtp_context_t * context){ 162 btstack_linked_list_iterator_t it; 163 btstack_linked_list_iterator_init(&it, &context->stream_endpoints); 164 while (btstack_linked_list_iterator_has_next(&it)){ 165 avdtp_stream_endpoint_t * stream_endpoint = (avdtp_stream_endpoint_t *)btstack_linked_list_iterator_next(&it); 166 if (stream_endpoint->sep.seid == seid){ 167 return stream_endpoint; 168 } 169 } 170 return NULL; 171 } 172 173 avdtp_stream_endpoint_t * avdtp_stream_endpoint_associated_with_acp_seid(uint16_t acp_seid, avdtp_context_t * context){ 174 btstack_linked_list_iterator_t it; 175 btstack_linked_list_iterator_init(&it, &context->stream_endpoints); 176 while (btstack_linked_list_iterator_has_next(&it)){ 177 avdtp_stream_endpoint_t * stream_endpoint = (avdtp_stream_endpoint_t *)btstack_linked_list_iterator_next(&it); 178 179 if (stream_endpoint->remote_sep_index != AVDTP_INVALID_SEP_INDEX){ 180 if (!stream_endpoint->connection) continue; 181 if (stream_endpoint->connection->remote_seps[stream_endpoint->remote_sep_index].seid == acp_seid){ 182 return stream_endpoint; 183 } 184 } 185 } 186 return NULL; 187 } 188 189 int get_bit16(uint16_t bitmap, int position){ 190 return (bitmap >> position) & 1; 191 } 192 193 uint8_t store_bit16(uint16_t bitmap, int position, uint8_t value){ 194 if (value){ 195 bitmap |= 1 << position; 196 } else { 197 bitmap &= ~ (1 << position); 198 } 199 return bitmap; 200 } 201 202 int avdtp_read_signaling_header(avdtp_signaling_packet_t * signaling_header, uint8_t * packet, uint16_t size){ 203 int pos = 0; 204 if (size < 2) return pos; 205 signaling_header->transaction_label = packet[pos] >> 4; 206 signaling_header->packet_type = (avdtp_packet_type_t)((packet[pos] >> 2) & 0x03); 207 signaling_header->message_type = (avdtp_message_type_t) (packet[pos] & 0x03); 208 pos++; 209 memset(signaling_header->command, 0, sizeof(signaling_header->command)); 210 switch (signaling_header->packet_type){ 211 case AVDTP_SINGLE_PACKET: 212 signaling_header->num_packets = 0; 213 signaling_header->offset = 0; 214 signaling_header->size = 0; 215 break; 216 case AVDTP_END_PACKET: 217 signaling_header->num_packets = 0; 218 break; 219 case AVDTP_START_PACKET: 220 signaling_header->num_packets = packet[pos++]; 221 signaling_header->size = 0; 222 signaling_header->offset = 0; 223 break; 224 case AVDTP_CONTINUE_PACKET: 225 if (signaling_header->num_packets <= 0) { 226 log_info(" ERROR: wrong num fragmented packets\n"); 227 break; 228 } 229 signaling_header->num_packets--; 230 break; 231 } 232 signaling_header->signal_identifier = (avdtp_signal_identifier_t)(packet[pos++] & 0x3f); 233 return pos; 234 } 235 236 int avdtp_pack_service_capabilities(uint8_t * buffer, int size, avdtp_capabilities_t caps, avdtp_service_category_t category, uint8_t pack_all_capabilities){ 237 UNUSED(size); 238 239 int i; 240 // pos = 0 reserved for length 241 int pos = 1; 242 switch(category){ 243 case AVDTP_MEDIA_TRANSPORT: 244 case AVDTP_REPORTING: 245 break; 246 case AVDTP_DELAY_REPORTING: 247 if (!pack_all_capabilities) break; 248 break; 249 case AVDTP_RECOVERY: 250 buffer[pos++] = caps.recovery.recovery_type; // 0x01=RFC2733 251 buffer[pos++] = caps.recovery.maximum_recovery_window_size; 252 buffer[pos++] = caps.recovery.maximum_number_media_packets; 253 break; 254 case AVDTP_CONTENT_PROTECTION: 255 buffer[pos++] = caps.content_protection.cp_type_value_len + 2; 256 big_endian_store_16(buffer, pos, caps.content_protection.cp_type); 257 pos += 2; 258 memcpy(buffer+pos, caps.content_protection.cp_type_value, caps.content_protection.cp_type_value_len); 259 break; 260 case AVDTP_HEADER_COMPRESSION: 261 buffer[pos++] = (caps.header_compression.back_ch << 7) | (caps.header_compression.media << 6) | (caps.header_compression.recovery << 5); 262 break; 263 case AVDTP_MULTIPLEXING: 264 buffer[pos++] = caps.multiplexing_mode.fragmentation << 7; 265 for (i=0; i<caps.multiplexing_mode.transport_identifiers_num; i++){ 266 buffer[pos++] = caps.multiplexing_mode.transport_session_identifiers[i] << 7; 267 buffer[pos++] = caps.multiplexing_mode.tcid[i] << 7; 268 // media, reporting. recovery 269 } 270 break; 271 case AVDTP_MEDIA_CODEC: 272 buffer[pos++] = ((uint8_t)caps.media_codec.media_type) << 4; 273 buffer[pos++] = (uint8_t)caps.media_codec.media_codec_type; 274 for (i = 0; i<caps.media_codec.media_codec_information_len; i++){ 275 buffer[pos++] = caps.media_codec.media_codec_information[i]; 276 } 277 break; 278 default: 279 break; 280 } 281 buffer[0] = pos - 1; // length 282 return pos; 283 } 284 285 static int avdtp_unpack_service_capabilities_has_errors(avdtp_connection_t * connection, avdtp_service_category_t category, uint8_t cap_len){ 286 connection->error_code = 0; 287 288 if (category == AVDTP_SERVICE_CATEGORY_INVALID_0 || 289 (category == AVDTP_SERVICE_CATEGORY_INVALID_FF && connection->signaling_packet.signal_identifier == AVDTP_SI_RECONFIGURE)){ 290 log_info(" ERROR: BAD SERVICE CATEGORY %d\n", category); 291 connection->reject_service_category = category; 292 connection->error_code = BAD_SERV_CATEGORY; 293 return 1; 294 } 295 296 if (connection->signaling_packet.signal_identifier == AVDTP_SI_RECONFIGURE){ 297 if (category != AVDTP_CONTENT_PROTECTION && category != AVDTP_MEDIA_CODEC){ 298 log_info(" ERROR: REJECT CATEGORY, INVALID_CAPABILITIES\n"); 299 connection->reject_service_category = category; 300 connection->error_code = INVALID_CAPABILITIES; 301 return 1; 302 } 303 } 304 305 switch(category){ 306 case AVDTP_MEDIA_TRANSPORT: 307 if (cap_len != 0){ 308 log_info(" ERROR: REJECT CATEGORY, BAD_MEDIA_TRANSPORT\n"); 309 connection->reject_service_category = category; 310 connection->error_code = BAD_MEDIA_TRANSPORT_FORMAT; 311 return 1; 312 } 313 break; 314 case AVDTP_REPORTING: 315 case AVDTP_DELAY_REPORTING: 316 if (cap_len != 0){ 317 log_info(" ERROR: REJECT CATEGORY, BAD_LENGTH\n"); 318 connection->reject_service_category = category; 319 connection->error_code = BAD_LENGTH; 320 return 1; 321 } 322 break; 323 case AVDTP_RECOVERY: 324 if (cap_len < 3){ 325 log_info(" ERROR: REJECT CATEGORY, BAD_MEDIA_TRANSPORT\n"); 326 connection->reject_service_category = category; 327 connection->error_code = BAD_RECOVERY_FORMAT; 328 return 1; 329 } 330 break; 331 case AVDTP_CONTENT_PROTECTION: 332 if (cap_len < 2){ 333 log_info(" ERROR: REJECT CATEGORY, BAD_CP_FORMAT\n"); 334 connection->reject_service_category = category; 335 connection->error_code = BAD_CP_FORMAT; 336 return 1; 337 } 338 break; 339 case AVDTP_HEADER_COMPRESSION: 340 break; 341 case AVDTP_MULTIPLEXING: 342 break; 343 case AVDTP_MEDIA_CODEC: 344 break; 345 default: 346 break; 347 } 348 return 0; 349 } 350 351 uint16_t avdtp_unpack_service_capabilities(avdtp_connection_t * connection, avdtp_capabilities_t * caps, uint8_t * packet, uint16_t size){ 352 if (size == 0) return 0; 353 354 uint16_t registered_service_categories = 0; 355 int pos = 0; 356 int i; 357 avdtp_service_category_t category = (avdtp_service_category_t)packet[pos++]; 358 uint8_t cap_len = packet[pos++]; 359 if (cap_len > size - pos){ 360 connection->reject_service_category = category; 361 connection->error_code = BAD_LENGTH; 362 return 0; 363 } 364 365 if (avdtp_unpack_service_capabilities_has_errors(connection, category, cap_len)) return 0; 366 367 int processed_cap_len = 0; 368 int rfa = 0; 369 370 while (pos < size){ 371 rfa = 0; 372 processed_cap_len = pos; 373 switch(category){ 374 case AVDTP_RECOVERY: 375 caps->recovery.recovery_type = packet[pos++]; 376 caps->recovery.maximum_recovery_window_size = packet[pos++]; 377 caps->recovery.maximum_number_media_packets = packet[pos++]; 378 break; 379 case AVDTP_CONTENT_PROTECTION: 380 caps->content_protection.cp_type = big_endian_read_16(packet, pos); 381 pos+=2; 382 383 caps->content_protection.cp_type_value_len = cap_len - 2; 384 pos += caps->content_protection.cp_type_value_len; 385 386 // connection->reject_service_category = category; 387 // connection->error_code = UNSUPPORTED_CONFIGURATION; 388 // support for content protection goes here 389 break; 390 391 case AVDTP_HEADER_COMPRESSION: 392 caps->header_compression.back_ch = packet[pos] >> 7; 393 caps->header_compression.media = packet[pos] >> 6; 394 caps->header_compression.recovery = packet[pos] >> 5; 395 pos++; 396 break; 397 case AVDTP_MULTIPLEXING: 398 caps->multiplexing_mode.fragmentation = packet[pos++] >> 7; 399 // read [tsid, tcid] for media, reporting. recovery respectively 400 caps->multiplexing_mode.transport_identifiers_num = 3; 401 for (i=0; i<caps->multiplexing_mode.transport_identifiers_num; i++){ 402 caps->multiplexing_mode.transport_session_identifiers[i] = packet[pos++] >> 7; 403 caps->multiplexing_mode.tcid[i] = packet[pos++] >> 7; 404 } 405 break; 406 case AVDTP_MEDIA_CODEC: 407 caps->media_codec.media_type = (avdtp_media_type_t)(packet[pos++] >> 4); 408 caps->media_codec.media_codec_type = (avdtp_media_codec_type_t)(packet[pos++]); 409 caps->media_codec.media_codec_information_len = cap_len - 2; 410 caps->media_codec.media_codec_information = &packet[pos]; 411 pos += caps->media_codec.media_codec_information_len; 412 break; 413 case AVDTP_MEDIA_TRANSPORT: 414 case AVDTP_REPORTING: 415 case AVDTP_DELAY_REPORTING: 416 pos += cap_len; 417 break; 418 default: 419 pos += cap_len; 420 rfa = 1; 421 break; 422 } 423 processed_cap_len = pos - processed_cap_len; 424 // printf("processed category %d, cap_len %d, processed_cap_len %d, rfa %d\n", category, cap_len, processed_cap_len, rfa); 425 426 if (cap_len == processed_cap_len){ 427 // printf("pos %d, size %d \n", rfa, size - 2); 428 429 if (!rfa) { 430 registered_service_categories = store_bit16(registered_service_categories, category, 1); 431 } 432 if (pos < size-2){ 433 //int old_pos = pos; 434 category = (avdtp_service_category_t)packet[pos++]; 435 cap_len = packet[pos++]; 436 if (avdtp_unpack_service_capabilities_has_errors(connection, category, cap_len)){ 437 log_error("avdtp_unpack_service_capabilities_has_errors"); 438 return 0; 439 } 440 } 441 } 442 } 443 return registered_service_categories; 444 } 445 446 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){ 447 if (signaling_packet->offset) return; 448 uint8_t pack_all_capabilities = 1; 449 signaling_packet->message_type = AVDTP_RESPONSE_ACCEPT_MSG; 450 int i; 451 452 signaling_packet->size = 0; 453 memset(signaling_packet->command, 0 , sizeof(signaling_packet->command)); 454 455 456 switch (identifier) { 457 case AVDTP_SI_GET_CAPABILITIES: 458 pack_all_capabilities = 0; 459 break; 460 case AVDTP_SI_GET_ALL_CAPABILITIES: 461 pack_all_capabilities = 1; 462 break; 463 case AVDTP_SI_SET_CONFIGURATION: 464 signaling_packet->command[signaling_packet->size++] = signaling_packet->acp_seid << 2; 465 signaling_packet->command[signaling_packet->size++] = signaling_packet->int_seid << 2; 466 signaling_packet->message_type = AVDTP_CMD_MSG; 467 break; 468 case AVDTP_SI_RECONFIGURE: 469 signaling_packet->command[signaling_packet->size++] = signaling_packet->acp_seid << 2; 470 signaling_packet->message_type = AVDTP_CMD_MSG; 471 break; 472 default: 473 log_error("avdtp_prepare_capabilities wrong identifier %d", identifier); 474 break; 475 } 476 477 for (i = 1; i < 9; i++){ 478 int registered_category = get_bit16(registered_service_categories, i); 479 if (!registered_category && (identifier == AVDTP_SI_SET_CONFIGURATION || identifier == AVDTP_SI_RECONFIGURE)){ 480 // TODO: introduce bitmap of mandatory categories 481 if (i == 1){ 482 registered_category = 1; 483 } 484 } 485 if (registered_category){ 486 // service category 487 signaling_packet->command[signaling_packet->size++] = i; 488 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); 489 } 490 } 491 492 signaling_packet->signal_identifier = (avdtp_signal_identifier_t)identifier; 493 signaling_packet->transaction_label = transaction_label; 494 } 495 496 int avdtp_signaling_create_fragment(uint16_t cid, avdtp_signaling_packet_t * signaling_packet, uint8_t * out_buffer) { 497 int mtu = l2cap_get_remote_mtu_for_local_cid(cid); 498 int data_len = 0; 499 500 uint16_t offset = signaling_packet->offset; 501 uint16_t pos = 1; 502 503 if (offset == 0){ 504 if (signaling_packet->size <= mtu - 2){ 505 signaling_packet->packet_type = AVDTP_SINGLE_PACKET; 506 out_buffer[pos++] = signaling_packet->signal_identifier; 507 data_len = signaling_packet->size; 508 } else { 509 signaling_packet->packet_type = AVDTP_START_PACKET; 510 out_buffer[pos++] = (mtu + signaling_packet->size)/ (mtu-1); 511 out_buffer[pos++] = signaling_packet->signal_identifier; 512 data_len = mtu - 3; 513 signaling_packet->offset = data_len; 514 } 515 } else { 516 int remaining_bytes = signaling_packet->size - offset; 517 if (remaining_bytes <= mtu - 1){ 518 signaling_packet->packet_type = AVDTP_END_PACKET; 519 data_len = remaining_bytes; 520 signaling_packet->offset = 0; 521 } else{ 522 signaling_packet->packet_type = AVDTP_CONTINUE_PACKET; 523 data_len = mtu - 1; 524 signaling_packet->offset += data_len; 525 } 526 } 527 out_buffer[0] = avdtp_header(signaling_packet->transaction_label, signaling_packet->packet_type, signaling_packet->message_type); 528 memcpy(out_buffer+pos, signaling_packet->command + offset, data_len); 529 pos += data_len; 530 return pos; 531 } 532 533 534 void avdtp_signaling_emit_connection_established(btstack_packet_handler_t callback, uint16_t avdtp_cid, bd_addr_t addr, uint8_t status){ 535 if (!callback) return; 536 uint8_t event[12]; 537 int pos = 0; 538 event[pos++] = HCI_EVENT_AVDTP_META; 539 event[pos++] = sizeof(event) - 2; 540 event[pos++] = AVDTP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED; 541 little_endian_store_16(event, pos, avdtp_cid); 542 pos += 2; 543 reverse_bd_addr(addr,&event[pos]); 544 pos += 6; 545 event[pos++] = status; 546 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 547 } 548 549 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){ 550 if (!callback) return; 551 uint8_t event[8]; 552 int pos = 0; 553 event[pos++] = HCI_EVENT_AVDTP_META; 554 event[pos++] = sizeof(event) - 2; 555 event[pos++] = AVDTP_SUBEVENT_STREAMING_CAN_SEND_MEDIA_PACKET_NOW; 556 little_endian_store_16(event, pos, avdtp_cid); 557 pos += 2; 558 event[pos++] = seid; 559 little_endian_store_16(event, pos, sequence_number); 560 pos += 2; 561 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 562 } 563 564 void avdtp_signaling_emit_connection_released(btstack_packet_handler_t callback, uint16_t avdtp_cid){ 565 if (!callback) return; 566 uint8_t event[5]; 567 int pos = 0; 568 event[pos++] = HCI_EVENT_AVDTP_META; 569 event[pos++] = sizeof(event) - 2; 570 event[pos++] = AVDTP_SUBEVENT_SIGNALING_CONNECTION_RELEASED; 571 little_endian_store_16(event, pos, avdtp_cid); 572 pos += 2; 573 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 574 } 575 576 void avdtp_streaming_emit_connection_released(btstack_packet_handler_t callback, uint16_t avdtp_cid, uint8_t local_seid){ 577 if (!callback) return; 578 uint8_t event[6]; 579 int pos = 0; 580 event[pos++] = HCI_EVENT_AVDTP_META; 581 event[pos++] = sizeof(event) - 2; 582 event[pos++] = AVDTP_SUBEVENT_STREAMING_CONNECTION_RELEASED; 583 little_endian_store_16(event, pos, avdtp_cid); 584 pos += 2; 585 event[pos++] = local_seid; 586 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 587 } 588 589 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){ 590 if (!callback) return; 591 uint8_t event[14]; 592 int pos = 0; 593 event[pos++] = HCI_EVENT_AVDTP_META; 594 event[pos++] = sizeof(event) - 2; 595 event[pos++] = AVDTP_SUBEVENT_STREAMING_CONNECTION_ESTABLISHED; 596 little_endian_store_16(event, pos, avdtp_cid); 597 pos += 2; 598 reverse_bd_addr(addr,&event[pos]); 599 pos += 6; 600 event[pos++] = local_seid; 601 event[pos++] = remote_seid; 602 event[pos++] = status; 603 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 604 } 605 606 void avdtp_signaling_emit_sep(btstack_packet_handler_t callback, uint16_t avdtp_cid, avdtp_sep_t sep){ 607 if (!callback) return; 608 uint8_t event[9]; 609 int pos = 0; 610 event[pos++] = HCI_EVENT_AVDTP_META; 611 event[pos++] = sizeof(event) - 2; 612 event[pos++] = AVDTP_SUBEVENT_SIGNALING_SEP_FOUND; 613 little_endian_store_16(event, pos, avdtp_cid); 614 pos += 2; 615 event[pos++] = sep.seid; 616 event[pos++] = sep.in_use; 617 event[pos++] = sep.media_type; 618 event[pos++] = sep.type; 619 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 620 } 621 622 void avdtp_signaling_emit_accept(btstack_packet_handler_t callback, uint16_t avdtp_cid, uint8_t local_seid, avdtp_signal_identifier_t identifier){ 623 if (!callback) return; 624 uint8_t event[7]; 625 int pos = 0; 626 event[pos++] = HCI_EVENT_AVDTP_META; 627 event[pos++] = sizeof(event) - 2; 628 event[pos++] = AVDTP_SUBEVENT_SIGNALING_ACCEPT; 629 little_endian_store_16(event, pos, avdtp_cid); 630 pos += 2; 631 event[pos++] = local_seid; 632 event[pos++] = identifier; 633 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 634 } 635 636 void avdtp_signaling_emit_reject(btstack_packet_handler_t callback, uint16_t avdtp_cid, uint8_t local_seid, avdtp_signal_identifier_t identifier){ 637 if (!callback) return; 638 uint8_t event[7]; 639 int pos = 0; 640 event[pos++] = HCI_EVENT_AVDTP_META; 641 event[pos++] = sizeof(event) - 2; 642 event[pos++] = AVDTP_SUBEVENT_SIGNALING_REJECT; 643 little_endian_store_16(event, pos, avdtp_cid); 644 pos += 2; 645 event[pos++] = local_seid; 646 event[pos++] = identifier; 647 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 648 } 649 650 void avdtp_signaling_emit_general_reject(btstack_packet_handler_t callback, uint16_t avdtp_cid, uint8_t local_seid, avdtp_signal_identifier_t identifier){ 651 if (!callback) return; 652 uint8_t event[7]; 653 int pos = 0; 654 event[pos++] = HCI_EVENT_AVDTP_META; 655 event[pos++] = sizeof(event) - 2; 656 event[pos++] = AVDTP_SUBEVENT_SIGNALING_GENERAL_REJECT; 657 little_endian_store_16(event, pos, avdtp_cid); 658 pos += 2; 659 event[pos++] = local_seid; 660 event[pos++] = identifier; 661 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 662 } 663 664 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){ 665 if (!callback) return; 666 uint8_t event[15]; 667 int pos = 0; 668 event[pos++] = HCI_EVENT_AVDTP_META; 669 event[pos++] = sizeof(event) - 2; 670 event[pos++] = AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CAPABILITY; 671 little_endian_store_16(event, pos, avdtp_cid); 672 pos += 2; 673 event[pos++] = local_seid; 674 event[pos++] = remote_seid; 675 event[pos++] = media_codec.media_type; 676 event[pos++] = media_codec.media_codec_information[0] >> 4; 677 event[pos++] = media_codec.media_codec_information[0] & 0x0F; 678 event[pos++] = media_codec.media_codec_information[1] >> 4; 679 event[pos++] = (media_codec.media_codec_information[1] & 0x0F) >> 2; 680 event[pos++] = media_codec.media_codec_information[1] & 0x03; 681 event[pos++] = media_codec.media_codec_information[2]; 682 event[pos++] = media_codec.media_codec_information[3]; 683 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 684 } 685 686 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){ 687 if (!callback) return; 688 uint8_t event[7]; 689 int pos = 0; 690 event[pos++] = HCI_EVENT_AVDTP_META; 691 event[pos++] = sizeof(event) - 2; 692 event[pos++] = capability_subevent_id; 693 little_endian_store_16(event, pos, avdtp_cid); 694 pos += 2; 695 event[pos++] = local_seid; 696 event[pos++] = remote_seid; 697 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 698 } 699 700 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){ 701 avdtp_signaling_emit_capability(callback, AVDTP_SUBEVENT_SIGNALING_MEDIA_TRANSPORT_CAPABILITY, avdtp_cid, local_seid, remote_seid); 702 } 703 704 static void avdtp_signaling_emit_reporting_capability(btstack_packet_handler_t callback, uint16_t avdtp_cid, uint8_t local_seid, uint8_t remote_seid){ 705 avdtp_signaling_emit_capability(callback, AVDTP_SUBEVENT_SIGNALING_REPORTING_CAPABILITY, avdtp_cid, local_seid, remote_seid); 706 } 707 708 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){ 709 avdtp_signaling_emit_capability(callback, AVDTP_SUBEVENT_SIGNALING_DELAY_REPORTING_CAPABILITY, avdtp_cid, local_seid, remote_seid); 710 } 711 712 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){ 713 if (!callback) return; 714 uint8_t event[10]; 715 int pos = 0; 716 event[pos++] = HCI_EVENT_AVDTP_META; 717 event[pos++] = sizeof(event) - 2; 718 event[pos++] = AVDTP_SUBEVENT_SIGNALING_RECOVERY_CAPABILITY; 719 little_endian_store_16(event, pos, avdtp_cid); 720 pos += 2; 721 event[pos++] = local_seid; 722 event[pos++] = remote_seid; 723 event[pos++] = recovery->recovery_type; 724 event[pos++] = recovery->maximum_recovery_window_size; 725 event[pos++] = recovery->maximum_number_media_packets; 726 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 727 } 728 729 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){ 730 if (!callback) return; 731 uint8_t event[22]; 732 int pos = 0; 733 event[pos++] = HCI_EVENT_AVDTP_META; 734 event[pos++] = sizeof(event) - 2; 735 event[pos++] = AVDTP_SUBEVENT_SIGNALING_CONTENT_PROTECTION_CAPABILITY; 736 little_endian_store_16(event, pos, avdtp_cid); 737 pos += 2; 738 event[pos++] = local_seid; 739 event[pos++] = remote_seid; 740 741 little_endian_store_16(event, pos, content_protection->cp_type); 742 pos += 2; 743 little_endian_store_16(event, pos, content_protection->cp_type_value_len); 744 pos += 2; 745 746 //TODO: reserve place for value 747 if (content_protection->cp_type_value_len < 10){ 748 memcpy(event+pos, content_protection->cp_type_value, content_protection->cp_type_value_len); 749 } 750 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 751 } 752 753 754 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){ 755 if (!callback) return; 756 uint8_t event[10]; 757 int pos = 0; 758 event[pos++] = HCI_EVENT_AVDTP_META; 759 event[pos++] = sizeof(event) - 2; 760 event[pos++] = AVDTP_SUBEVENT_SIGNALING_HEADER_COMPRESSION_CAPABILITY; 761 little_endian_store_16(event, pos, avdtp_cid); 762 pos += 2; 763 event[pos++] = local_seid; 764 event[pos++] = remote_seid; 765 event[pos++] = header_compression->back_ch; 766 event[pos++] = header_compression->media; 767 event[pos++] = header_compression->recovery; 768 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 769 } 770 771 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){ 772 if (!callback) return; 773 uint8_t event[15]; 774 int pos = 0; 775 event[pos++] = HCI_EVENT_AVDTP_META; 776 event[pos++] = sizeof(event) - 2; 777 event[pos++] = AVDTP_SUBEVENT_SIGNALING_MULTIPLEXING_CAPABILITY; 778 little_endian_store_16(event, pos, avdtp_cid); 779 pos += 2; 780 event[pos++] = local_seid; 781 event[pos++] = remote_seid; 782 783 event[pos++] = multiplexing_mode->fragmentation; 784 event[pos++] = multiplexing_mode->transport_identifiers_num; 785 786 int i; 787 for (i = 0; i < 3; i++){ 788 event[pos++] = multiplexing_mode->transport_session_identifiers[i]; 789 } 790 for (i = 0; i < 3; i++){ 791 event[pos++] = multiplexing_mode->tcid[i]; 792 } 793 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 794 } 795 796 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){ 797 if (!callback) return; 798 uint8_t event[MAX_MEDIA_CODEC_INFORMATION_LENGTH + 12]; 799 int pos = 0; 800 event[pos++] = HCI_EVENT_AVDTP_META; 801 event[pos++] = sizeof(event) - 2; 802 event[pos++] = AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_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++] = media_codec.media_type; 808 little_endian_store_16(event, pos, media_codec.media_codec_type); 809 pos += 2; 810 little_endian_store_16(event, pos, media_codec.media_codec_information_len); 811 pos += 2; 812 memcpy(event+pos, media_codec.media_codec_information, btstack_min(media_codec.media_codec_information_len, MAX_MEDIA_CODEC_INFORMATION_LENGTH)); 813 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 814 } 815 816 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, 817 avdtp_media_type_t media_type, const uint8_t * media_codec_information, uint8_t reconfigure){ 818 if (!callback) return; 819 uint8_t event[16+2]; 820 int pos = 0; 821 event[pos++] = HCI_EVENT_AVDTP_META; 822 event[pos++] = sizeof(event) - 2; 823 824 event[pos++] = AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION; 825 little_endian_store_16(event, pos, avdtp_cid); 826 pos += 2; 827 event[pos++] = local_seid; 828 event[pos++] = remote_seid; 829 event[pos++] = reconfigure; 830 831 uint8_t num_channels = 0; 832 uint16_t sampling_frequency = 0; 833 uint8_t subbands = 0; 834 uint8_t block_length = 0; 835 836 uint8_t sampling_frequency_bitmap = media_codec_information[0] >> 4; 837 uint8_t channel_mode_bitmap = media_codec_information[0] & 0x0F; 838 uint8_t block_length_bitmap = media_codec_information[1] >> 4; 839 uint8_t subbands_bitmap = (media_codec_information[1] & 0x0F) >> 2; 840 841 if (channel_mode_bitmap & AVDTP_SBC_MONO){ 842 num_channels = 1; 843 } 844 if ( (channel_mode_bitmap & AVDTP_SBC_JOINT_STEREO) || 845 (channel_mode_bitmap & AVDTP_SBC_STEREO) || 846 (channel_mode_bitmap & AVDTP_SBC_DUAL_CHANNEL) ){ 847 num_channels = 2; 848 } 849 850 if (sampling_frequency_bitmap & AVDTP_SBC_16000){ 851 sampling_frequency = 16000; 852 } 853 if (sampling_frequency_bitmap & AVDTP_SBC_32000){ 854 sampling_frequency = 32000; 855 } 856 if (sampling_frequency_bitmap & AVDTP_SBC_44100){ 857 sampling_frequency = 44100; 858 } 859 if (sampling_frequency_bitmap & AVDTP_SBC_48000){ 860 sampling_frequency = 48000; 861 } 862 863 if (subbands_bitmap & AVDTP_SBC_SUBBANDS_4){ 864 subbands = 4; 865 } 866 if (subbands_bitmap & AVDTP_SBC_SUBBANDS_8){ 867 subbands = 8; 868 } 869 870 if (block_length_bitmap & AVDTP_SBC_BLOCK_LENGTH_4){ 871 block_length = 4; 872 } 873 if (block_length_bitmap & AVDTP_SBC_BLOCK_LENGTH_8){ 874 block_length = 8; 875 } 876 if (block_length_bitmap & AVDTP_SBC_BLOCK_LENGTH_12){ 877 block_length = 12; 878 } 879 if (block_length_bitmap & AVDTP_SBC_BLOCK_LENGTH_16){ 880 block_length = 16; 881 } 882 883 event[pos++] = media_type; 884 little_endian_store_16(event, pos, sampling_frequency); 885 pos += 2; 886 887 event[pos++] = channel_mode_bitmap; 888 event[pos++] = num_channels; 889 event[pos++] = block_length; 890 event[pos++] = subbands; 891 event[pos++] = media_codec_information[1] & 0x03; 892 event[pos++] = media_codec_information[2]; 893 event[pos++] = media_codec_information[3]; 894 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 895 } 896 897 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){ 898 if (!callback) return; 899 avdtp_signaling_emit_media_codec_sbc(callback, avdtp_cid, local_seid, remote_seid, media_type, media_codec_information, 0); 900 } 901 902 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){ 903 if (!callback) return; 904 avdtp_signaling_emit_media_codec_sbc(callback, avdtp_cid, local_seid, remote_seid, media_type, media_codec_information, 1); 905 } 906 907 908 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){ 909 uint8_t event[MAX_MEDIA_CODEC_INFORMATION_LENGTH + 13]; 910 int pos = 0; 911 event[pos++] = HCI_EVENT_AVDTP_META; 912 event[pos++] = sizeof(event) - 2; 913 event[pos++] = AVDTP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION; 914 little_endian_store_16(event, pos, avdtp_cid); 915 pos += 2; 916 event[pos++] = local_seid; 917 event[pos++] = remote_seid; 918 event[pos++] = reconfigure; 919 event[pos++] = media_codec.media_type; 920 little_endian_store_16(event, pos, media_codec.media_codec_type); 921 pos += 2; 922 little_endian_store_16(event, pos, media_codec.media_codec_information_len); 923 pos += 2; 924 925 int media_codec_len = btstack_min(MAX_MEDIA_CODEC_INFORMATION_LENGTH, media_codec.media_codec_information_len); 926 memcpy(event+pos, media_codec.media_codec_information, media_codec_len); 927 928 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 929 } 930 931 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){ 932 if (!callback) return; 933 avdtp_signaling_emit_media_codec_other(callback, avdtp_cid, local_seid, remote_seid, media_codec, 0); 934 } 935 936 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){ 937 if (!callback) return; 938 avdtp_signaling_emit_media_codec_other(callback, avdtp_cid, local_seid, remote_seid, media_codec, 1); 939 } 940 941 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){ 942 if (get_bit16(registered_service_categories, AVDTP_MEDIA_CODEC)){ 943 switch (capabilities->media_codec.media_codec_type){ 944 case AVDTP_CODEC_SBC: 945 avdtp_signaling_emit_media_codec_sbc_capability(callback, avdtp_cid, local_seid, remote_seid, capabilities->media_codec); 946 break; 947 default: 948 avdtp_signaling_emit_media_codec_other_capability(callback, avdtp_cid, local_seid, remote_seid, capabilities->media_codec); 949 break; 950 } 951 } 952 953 if (get_bit16(registered_service_categories, AVDTP_MEDIA_TRANSPORT)){ 954 avdtp_signaling_emit_media_transport_capability(callback, avdtp_cid, local_seid, remote_seid); 955 } 956 if (get_bit16(registered_service_categories, AVDTP_REPORTING)){ 957 avdtp_signaling_emit_reporting_capability(callback, avdtp_cid, local_seid, remote_seid); 958 } 959 if (get_bit16(registered_service_categories, AVDTP_RECOVERY)){ 960 avdtp_signaling_emit_recovery_capability(callback, avdtp_cid, local_seid, remote_seid, &capabilities->recovery); 961 } 962 if (get_bit16(registered_service_categories, AVDTP_CONTENT_PROTECTION)){ 963 avdtp_signaling_emit_content_protection_capability(callback, avdtp_cid, local_seid, remote_seid, &capabilities->content_protection); 964 } 965 if (get_bit16(registered_service_categories, AVDTP_HEADER_COMPRESSION)){ 966 avdtp_signaling_emit_header_compression_capability(callback, avdtp_cid, local_seid, remote_seid, &capabilities->header_compression); 967 } 968 if (get_bit16(registered_service_categories, AVDTP_MULTIPLEXING)){ 969 avdtp_signaling_emit_content_multiplexing_capability(callback, avdtp_cid, local_seid, remote_seid, &capabilities->multiplexing_mode); 970 } 971 if (get_bit16(registered_service_categories, AVDTP_DELAY_REPORTING)){ 972 avdtp_signaling_emit_delay_reporting_capability(callback, avdtp_cid, local_seid, remote_seid); 973 } 974 } 975 976 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){ 977 if (get_bit16(configured_service_categories, AVDTP_MEDIA_CODEC)){ 978 switch (configuration->media_codec.media_codec_type){ 979 case AVDTP_CODEC_SBC: 980 avdtp_signaling_emit_media_codec_sbc_configuration(callback, avdtp_cid, local_seid, remote_seid, 981 configuration->media_codec.media_type, configuration->media_codec.media_codec_information); 982 break; 983 default: 984 avdtp_signaling_emit_media_codec_other_configuration(callback, avdtp_cid, local_seid, remote_seid, configuration->media_codec); 985 break; 986 } 987 } 988 } 989 990 991 uint8_t avdtp_request_can_send_now_acceptor(avdtp_connection_t * connection, uint16_t l2cap_cid){ 992 if (!connection) return AVDTP_CONNECTION_DOES_NOT_EXIST; 993 connection->wait_to_send_acceptor = 1; 994 l2cap_request_can_send_now_event(l2cap_cid); 995 return ERROR_CODE_SUCCESS; 996 } 997 998 uint8_t avdtp_request_can_send_now_initiator(avdtp_connection_t * connection, uint16_t l2cap_cid){ 999 if (!connection) return AVDTP_CONNECTION_DOES_NOT_EXIST; 1000 connection->wait_to_send_initiator = 1; 1001 l2cap_request_can_send_now_event(l2cap_cid); 1002 return ERROR_CODE_SUCCESS; 1003 } 1004 1005 uint8_t avdtp_request_can_send_now_self(avdtp_connection_t * connection, uint16_t l2cap_cid){ 1006 if (!connection) return AVDTP_CONNECTION_DOES_NOT_EXIST; 1007 connection->wait_to_send_self = 1; 1008 l2cap_request_can_send_now_event(l2cap_cid); 1009 return ERROR_CODE_SUCCESS; 1010 } 1011 1012 uint8_t avdtp_get_index_of_remote_stream_endpoint_with_seid(avdtp_stream_endpoint_t * stream_endpoint, uint16_t seid){ 1013 if (!stream_endpoint->connection) return AVDTP_INVALID_SEP_INDEX; 1014 if (stream_endpoint->connection->remote_seps[stream_endpoint->remote_sep_index].seid == seid){ 1015 return stream_endpoint->remote_sep_index; 1016 } 1017 int i; 1018 for (i=0; i < stream_endpoint->connection->remote_seps_num; i++){ 1019 if (stream_endpoint->connection->remote_seps[i].seid == seid){ 1020 return i; 1021 } 1022 } 1023 return AVDTP_INVALID_SEP_INDEX; 1024 } 1025 1026 uint8_t avdtp_find_remote_sep(avdtp_connection_t * connection, uint8_t remote_seid){ 1027 if (!connection) return AVDTP_INVALID_SEP_INDEX; 1028 int i; 1029 for (i = 0; i < connection->remote_seps_num; i++){ 1030 if (connection->remote_seps[i].seid == remote_seid){ 1031 return i; 1032 } 1033 } 1034 return AVDTP_INVALID_SEP_INDEX; 1035 } 1036 1037 1038 uint8_t avdtp_local_seid(avdtp_stream_endpoint_t * stream_endpoint){ 1039 if (!stream_endpoint) return 0; 1040 return stream_endpoint->sep.seid; 1041 1042 } 1043 1044 uint8_t avdtp_remote_seid(avdtp_stream_endpoint_t * stream_endpoint){ 1045 if (!stream_endpoint) return 0; 1046 if (!stream_endpoint->connection) return 0; 1047 return stream_endpoint->connection->remote_seps[stream_endpoint->remote_sep_index].seid; 1048 } 1049 1050 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){ 1051 if (!callback) return; 1052 uint8_t event[14]; 1053 int pos = 0; 1054 event[pos++] = HCI_EVENT_A2DP_META; 1055 event[pos++] = sizeof(event) - 2; 1056 event[pos++] = A2DP_SUBEVENT_STREAM_ESTABLISHED; 1057 little_endian_store_16(event, pos, cid); 1058 pos += 2; 1059 reverse_bd_addr(addr,&event[pos]); 1060 pos += 6; 1061 event[pos++] = local_seid; 1062 event[pos++] = remote_seid; 1063 event[pos++] = status; 1064 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 1065 } 1066