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.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 #include "avdtp_acceptor.h" 50 #include "avdtp_initiator.h" 51 52 static int record_id = -1; 53 static uint8_t attribute_value[1000]; 54 static const unsigned int attribute_value_buffer_size = sizeof(attribute_value); 55 56 // typedef struct { 57 // btstack_linked_list_t * avdtp_connections; 58 // avdtp_connection_t * connection; 59 // btstack_packet_handler_t avdtp_callback; 60 // avdtp_sep_type_t query_role; 61 // btstack_packet_handler_t packet_handler; 62 // uint16_t avdtp_l2cap_psm; 63 // uint16_t avdtp_version; 64 // uint8_t role_supported; 65 // } avdtp_sdp_query_context_t; 66 67 static avdtp_context_t * sdp_query_context; 68 static uint16_t avdtp_cid_counter = 0; 69 70 static void (*handle_media_data)(uint8_t local_seid, uint8_t *packet, uint16_t size); 71 static void avdtp_handle_sdp_client_query_result(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 72 73 static uint16_t avdtp_get_next_initiator_transaction_label(avdtp_context_t * context){ 74 context->initiator_transaction_id_counter++; 75 if (context->initiator_transaction_id_counter == 0){ 76 context->initiator_transaction_id_counter = 1; 77 } 78 return context->initiator_transaction_id_counter; 79 } 80 81 static uint16_t avdtp_get_next_avdtp_cid(void){ 82 avdtp_cid_counter++; 83 if (avdtp_cid_counter == 0){ 84 avdtp_cid_counter = 1; 85 } 86 return avdtp_cid_counter; 87 } 88 89 static uint16_t avdtp_get_next_local_seid(avdtp_context_t * context){ 90 context->stream_endpoints_id_counter++; 91 if (context->stream_endpoints_id_counter == 0){ 92 context->stream_endpoints_id_counter = 1; 93 } 94 return context->stream_endpoints_id_counter; 95 } 96 97 uint8_t avdtp_connect(bd_addr_t remote, avdtp_sep_type_t query_role, avdtp_context_t * avdtp_context, uint16_t * avdtp_cid){ 98 sdp_query_context = avdtp_context; 99 avdtp_connection_t * connection = avdtp_connection_for_bd_addr(remote, avdtp_context); 100 if (!connection){ 101 connection = avdtp_create_connection(remote, avdtp_context); 102 if (!connection){ 103 log_error("avdtp: not enough memory to create connection"); 104 return BTSTACK_MEMORY_ALLOC_FAILED; 105 } 106 } 107 108 *avdtp_cid = connection->avdtp_cid; 109 if (!avdtp_cid) { 110 return L2CAP_LOCAL_CID_DOES_NOT_EXIST; 111 } 112 avdtp_context->avdtp_cid = connection->avdtp_cid; 113 114 uint8_t err; 115 switch (connection->state){ 116 case AVDTP_SIGNALING_CONNECTION_IDLE: 117 connection->state = AVDTP_SIGNALING_W4_SDP_QUERY_COMPLETE; 118 sdp_query_context = avdtp_context; 119 avdtp_context->avdtp_l2cap_psm = 0; 120 avdtp_context->avdtp_version = 0; 121 avdtp_context->query_role = query_role; 122 err = sdp_client_query_uuid16(&avdtp_handle_sdp_client_query_result, remote, BLUETOOTH_PROTOCOL_AVDTP); 123 if (err != ERROR_CODE_SUCCESS){ 124 connection->state = AVDTP_SIGNALING_CONNECTION_IDLE; 125 btstack_linked_list_remove(&avdtp_context->connections, (btstack_linked_item_t*) connection); 126 btstack_memory_avdtp_connection_free(connection); 127 } 128 return err; 129 case AVDTP_SIGNALING_CONNECTION_OPENED:{ 130 avdtp_stream_endpoint_t * stream_endpoint = avdtp_stream_endpoint_for_signaling_cid(connection->l2cap_signaling_cid, avdtp_context); 131 if (stream_endpoint){ 132 avdtp_streaming_emit_connection_established(avdtp_context->avdtp_callback, connection->avdtp_cid, remote, avdtp_local_seid(stream_endpoint), avdtp_remote_seid(stream_endpoint), 0); 133 break; 134 } 135 avdtp_signaling_emit_connection_established(avdtp_context->avdtp_callback, avdtp_context->avdtp_cid, connection->remote_addr, ERROR_CODE_SUCCESS); 136 break; 137 } 138 default: 139 log_error("avdtp_connect: sink in wrong state"); 140 return AVDTP_CONNECTION_IN_WRONG_STATE; 141 142 } 143 return ERROR_CODE_SUCCESS; 144 } 145 146 void avdtp_register_media_transport_category(avdtp_stream_endpoint_t * stream_endpoint){ 147 if (!stream_endpoint){ 148 log_error("avdtp_register_media_transport_category: stream endpoint with given seid is not registered"); 149 return; 150 } 151 uint16_t bitmap = store_bit16(stream_endpoint->sep.registered_service_categories, AVDTP_MEDIA_TRANSPORT, 1); 152 stream_endpoint->sep.registered_service_categories = bitmap; 153 } 154 155 void avdtp_register_reporting_category(avdtp_stream_endpoint_t * stream_endpoint){ 156 if (!stream_endpoint){ 157 log_error("avdtp_register_media_transport_category: stream endpoint with given seid is not registered"); 158 return; 159 } 160 uint16_t bitmap = store_bit16(stream_endpoint->sep.registered_service_categories, AVDTP_REPORTING, 1); 161 stream_endpoint->sep.registered_service_categories = bitmap; 162 } 163 164 void avdtp_register_delay_reporting_category(avdtp_stream_endpoint_t * stream_endpoint){ 165 if (!stream_endpoint){ 166 log_error("avdtp_register_media_transport_category: stream endpoint with given seid is not registered"); 167 return; 168 } 169 uint16_t bitmap = store_bit16(stream_endpoint->sep.registered_service_categories, AVDTP_DELAY_REPORTING, 1); 170 stream_endpoint->sep.registered_service_categories = bitmap; 171 } 172 173 void avdtp_register_recovery_category(avdtp_stream_endpoint_t * stream_endpoint, uint8_t maximum_recovery_window_size, uint8_t maximum_number_media_packets){ 174 if (!stream_endpoint){ 175 log_error("avdtp_register_media_transport_category: stream endpoint with given seid is not registered"); 176 return; 177 } 178 uint16_t bitmap = store_bit16(stream_endpoint->sep.registered_service_categories, AVDTP_RECOVERY, 1); 179 stream_endpoint->sep.registered_service_categories = bitmap; 180 stream_endpoint->sep.capabilities.recovery.recovery_type = 0x01; // 0x01 = RFC2733 181 stream_endpoint->sep.capabilities.recovery.maximum_recovery_window_size = maximum_recovery_window_size; 182 stream_endpoint->sep.capabilities.recovery.maximum_number_media_packets = maximum_number_media_packets; 183 } 184 185 void avdtp_register_content_protection_category(avdtp_stream_endpoint_t * stream_endpoint, uint16_t cp_type, const uint8_t * cp_type_value, uint8_t cp_type_value_len){ 186 if (!stream_endpoint){ 187 log_error("avdtp_register_media_transport_category: stream endpoint with given seid is not registered"); 188 return; 189 } 190 uint16_t bitmap = store_bit16(stream_endpoint->sep.registered_service_categories, AVDTP_CONTENT_PROTECTION, 1); 191 stream_endpoint->sep.registered_service_categories = bitmap; 192 stream_endpoint->sep.capabilities.content_protection.cp_type = cp_type; 193 stream_endpoint->sep.capabilities.content_protection.cp_type_value = cp_type_value; 194 stream_endpoint->sep.capabilities.content_protection.cp_type_value_len = cp_type_value_len; 195 } 196 197 void avdtp_register_header_compression_category(avdtp_stream_endpoint_t * stream_endpoint, uint8_t back_ch, uint8_t media, uint8_t recovery){ 198 if (!stream_endpoint){ 199 log_error("avdtp_register_media_transport_category: stream endpoint with given seid is not registered"); 200 return; 201 } 202 uint16_t bitmap = store_bit16(stream_endpoint->sep.registered_service_categories, AVDTP_HEADER_COMPRESSION, 1); 203 stream_endpoint->sep.registered_service_categories = bitmap; 204 stream_endpoint->sep.capabilities.header_compression.back_ch = back_ch; 205 stream_endpoint->sep.capabilities.header_compression.media = media; 206 stream_endpoint->sep.capabilities.header_compression.recovery = recovery; 207 } 208 209 void avdtp_register_media_codec_category(avdtp_stream_endpoint_t * stream_endpoint, avdtp_media_type_t media_type, avdtp_media_codec_type_t media_codec_type, uint8_t * media_codec_info, uint16_t media_codec_info_len){ 210 if (!stream_endpoint){ 211 log_error("avdtp_register_media_transport_category: stream endpoint with given seid is not registered"); 212 return; 213 } 214 uint16_t bitmap = store_bit16(stream_endpoint->sep.registered_service_categories, AVDTP_MEDIA_CODEC, 1); 215 stream_endpoint->sep.registered_service_categories = bitmap; 216 stream_endpoint->sep.capabilities.media_codec.media_type = media_type; 217 stream_endpoint->sep.capabilities.media_codec.media_codec_type = media_codec_type; 218 stream_endpoint->sep.capabilities.media_codec.media_codec_information = media_codec_info; 219 stream_endpoint->sep.capabilities.media_codec.media_codec_information_len = media_codec_info_len; 220 } 221 222 void avdtp_register_multiplexing_category(avdtp_stream_endpoint_t * stream_endpoint, uint8_t fragmentation){ 223 if (!stream_endpoint){ 224 log_error("avdtp_register_media_transport_category: stream endpoint with given seid is not registered"); 225 return; 226 } 227 uint16_t bitmap = store_bit16(stream_endpoint->sep.registered_service_categories, AVDTP_MULTIPLEXING, 1); 228 stream_endpoint->sep.registered_service_categories = bitmap; 229 stream_endpoint->sep.capabilities.multiplexing_mode.fragmentation = fragmentation; 230 } 231 232 233 /* START: tracking can send now requests pro l2cap cid */ 234 void avdtp_handle_can_send_now(avdtp_connection_t * connection, uint16_t l2cap_cid, avdtp_context_t * context){ 235 if (connection->wait_to_send_acceptor){ 236 connection->wait_to_send_acceptor = 0; 237 avdtp_acceptor_stream_config_subsm_run(connection, context); 238 } else if (connection->wait_to_send_initiator){ 239 connection->wait_to_send_initiator = 0; 240 avdtp_initiator_stream_config_subsm_run(connection, context); 241 } else if (connection->wait_to_send_self){ 242 connection->wait_to_send_self = 0; 243 if (connection->disconnect){ 244 btstack_linked_list_iterator_t it; 245 btstack_linked_list_iterator_init(&it, &context->stream_endpoints); 246 while (btstack_linked_list_iterator_has_next(&it)){ 247 avdtp_stream_endpoint_t * stream_endpoint = (avdtp_stream_endpoint_t *)btstack_linked_list_iterator_next(&it); 248 if (stream_endpoint->connection == connection){ 249 if (stream_endpoint->state >= AVDTP_STREAM_ENDPOINT_OPENED && stream_endpoint->state != AVDTP_STREAM_ENDPOINT_W4_L2CAP_FOR_MEDIA_DISCONNECTED){ 250 stream_endpoint->state = AVDTP_STREAM_ENDPOINT_W4_L2CAP_FOR_MEDIA_DISCONNECTED; 251 avdtp_request_can_send_now_self(connection, connection->l2cap_signaling_cid); 252 l2cap_disconnect(stream_endpoint->l2cap_media_cid, 0); 253 return; 254 } 255 } 256 } 257 connection->disconnect = 0; 258 connection->state = AVDTP_SIGNALING_CONNECTION_W4_L2CAP_DISCONNECTED; 259 l2cap_disconnect(connection->l2cap_signaling_cid, 0); 260 return; 261 } 262 } 263 264 // re-register 265 int more_to_send = connection->wait_to_send_acceptor || connection->wait_to_send_initiator || connection->wait_to_send_self; 266 if (more_to_send){ 267 l2cap_request_can_send_now_event(l2cap_cid); 268 } 269 } 270 /* END: tracking can send now requests pro l2cap cid */ 271 272 avdtp_connection_t * avdtp_create_connection(bd_addr_t remote_addr, avdtp_context_t * context){ 273 avdtp_connection_t * connection = btstack_memory_avdtp_connection_get(); 274 if (!connection){ 275 log_error("avdtp: not enough memory to create connection"); 276 return NULL; 277 } 278 memset(connection, 0, sizeof(avdtp_connection_t)); 279 connection->state = AVDTP_SIGNALING_CONNECTION_IDLE; 280 connection->initiator_transaction_label = avdtp_get_next_initiator_transaction_label(context); 281 connection->avdtp_cid = avdtp_get_next_avdtp_cid(); 282 memcpy(connection->remote_addr, remote_addr, 6); 283 btstack_linked_list_add(&context->connections, (btstack_linked_item_t *) connection); 284 return connection; 285 } 286 287 avdtp_stream_endpoint_t * avdtp_create_stream_endpoint(avdtp_sep_type_t sep_type, avdtp_media_type_t media_type, avdtp_context_t * context){ 288 avdtp_stream_endpoint_t * stream_endpoint = btstack_memory_avdtp_stream_endpoint_get(); 289 if (!stream_endpoint){ 290 log_error("avdtp: not enough memory to create stream endpoint"); 291 return NULL; 292 } 293 memset(stream_endpoint, 0, sizeof(avdtp_stream_endpoint_t)); 294 stream_endpoint->sep.seid = avdtp_get_next_local_seid(context); 295 stream_endpoint->sep.media_type = media_type; 296 stream_endpoint->sep.type = sep_type; 297 btstack_linked_list_add(&context->stream_endpoints, (btstack_linked_item_t *) stream_endpoint); 298 return stream_endpoint; 299 } 300 301 302 static void handle_l2cap_data_packet_for_signaling_connection(avdtp_connection_t * connection, uint8_t *packet, uint16_t size, avdtp_context_t * context){ 303 int offset = avdtp_read_signaling_header(&connection->signaling_packet, packet, size); 304 switch (connection->signaling_packet.message_type){ 305 case AVDTP_CMD_MSG: 306 avdtp_acceptor_stream_config_subsm(connection, packet, size, offset, context); 307 break; 308 default: 309 avdtp_initiator_stream_config_subsm(connection, packet, size, offset, context); 310 break; 311 } 312 } 313 314 static void avdtp_handle_sdp_client_query_result(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 315 avdtp_connection_t * connection = avdtp_connection_for_avdtp_cid(sdp_query_context->avdtp_cid, sdp_query_context); 316 if (!connection) { 317 log_error("avdtp: sdp query, connection with 0x%02x cid not found", sdp_query_context->avdtp_cid); 318 return; 319 } 320 if (connection->state != AVDTP_SIGNALING_W4_SDP_QUERY_COMPLETE) return; 321 322 UNUSED(packet_type); 323 UNUSED(channel); 324 UNUSED(size); 325 326 des_iterator_t des_list_it; 327 des_iterator_t prot_it; 328 uint8_t status; 329 330 switch (hci_event_packet_get_type(packet)){ 331 case SDP_EVENT_QUERY_ATTRIBUTE_VALUE: 332 // Handle new SDP record 333 if (sdp_event_query_attribute_byte_get_record_id(packet) != record_id) { 334 record_id = sdp_event_query_attribute_byte_get_record_id(packet); 335 // log_info("SDP Record: Nr: %d", record_id); 336 } 337 338 if (sdp_event_query_attribute_byte_get_attribute_length(packet) <= attribute_value_buffer_size) { 339 attribute_value[sdp_event_query_attribute_byte_get_data_offset(packet)] = sdp_event_query_attribute_byte_get_data(packet); 340 341 if ((uint16_t)(sdp_event_query_attribute_byte_get_data_offset(packet)+1) == sdp_event_query_attribute_byte_get_attribute_length(packet)) { 342 343 switch(sdp_event_query_attribute_byte_get_attribute_id(packet)) { 344 case BLUETOOTH_ATTRIBUTE_SERVICE_CLASS_ID_LIST: 345 if (de_get_element_type(attribute_value) != DE_DES) break; 346 for (des_iterator_init(&des_list_it, attribute_value); des_iterator_has_more(&des_list_it); des_iterator_next(&des_list_it)) { 347 uint8_t * element = des_iterator_get_element(&des_list_it); 348 if (de_get_element_type(element) != DE_UUID) continue; 349 uint32_t uuid = de_get_uuid32(element); 350 switch (uuid){ 351 case BLUETOOTH_SERVICE_CLASS_AUDIO_SOURCE: 352 if (sdp_query_context->query_role == AVDTP_SOURCE) { 353 sdp_query_context->role_supported = 1; 354 break; 355 } 356 // log_info("SDP Attribute 0x%04x: AVDTP SOURCE protocol UUID: 0x%04x", sdp_event_query_attribute_byte_get_attribute_id(packet), uuid); 357 // avdtp_remote_uuid = uuid; 358 break; 359 case BLUETOOTH_SERVICE_CLASS_AUDIO_SINK: 360 if (sdp_query_context->query_role == AVDTP_SINK) { 361 sdp_query_context->role_supported = 1; 362 break; 363 } 364 // log_info("SDP Attribute 0x%04x: AVDTP SINK protocol UUID: 0x%04x", sdp_event_query_attribute_byte_get_attribute_id(packet), uuid); 365 // avdtp_remote_uuid = uuid; 366 break; 367 default: 368 break; 369 } 370 } 371 break; 372 373 case BLUETOOTH_ATTRIBUTE_PROTOCOL_DESCRIPTOR_LIST: { 374 // log_info("SDP Attribute: 0x%04x", sdp_event_query_attribute_byte_get_attribute_id(packet)); 375 for (des_iterator_init(&des_list_it, attribute_value); des_iterator_has_more(&des_list_it); des_iterator_next(&des_list_it)) { 376 uint8_t *des_element; 377 uint8_t *element; 378 uint32_t uuid; 379 380 if (des_iterator_get_type(&des_list_it) != DE_DES) continue; 381 382 des_element = des_iterator_get_element(&des_list_it); 383 des_iterator_init(&prot_it, des_element); 384 element = des_iterator_get_element(&prot_it); 385 386 if (de_get_element_type(element) != DE_UUID) continue; 387 388 uuid = de_get_uuid32(element); 389 switch (uuid){ 390 case BLUETOOTH_PROTOCOL_L2CAP: 391 if (!des_iterator_has_more(&prot_it)) continue; 392 des_iterator_next(&prot_it); 393 de_element_get_uint16(des_iterator_get_element(&prot_it), &sdp_query_context->avdtp_l2cap_psm); 394 break; 395 case BLUETOOTH_PROTOCOL_AVDTP: 396 if (!des_iterator_has_more(&prot_it)) continue; 397 des_iterator_next(&prot_it); 398 de_element_get_uint16(des_iterator_get_element(&prot_it), &sdp_query_context->avdtp_version); 399 break; 400 default: 401 break; 402 } 403 } 404 } 405 break; 406 default: 407 break; 408 } 409 } 410 } else { 411 log_error("SDP attribute value buffer size exceeded: available %d, required %d", attribute_value_buffer_size, sdp_event_query_attribute_byte_get_attribute_length(packet)); 412 } 413 break; 414 415 case SDP_EVENT_QUERY_COMPLETE: 416 status = sdp_event_query_complete_get_status(packet); 417 if (status != ERROR_CODE_SUCCESS){ 418 avdtp_signaling_emit_connection_established(sdp_query_context->avdtp_callback, sdp_query_context->avdtp_cid, connection->remote_addr, status); 419 btstack_linked_list_remove(&sdp_query_context->connections, (btstack_linked_item_t*) connection); 420 btstack_memory_avdtp_connection_free(connection); 421 log_info("AVDTP: SDP query failed with status 0x%02x.", status); 422 break; 423 } 424 if (!sdp_query_context->role_supported){ 425 btstack_linked_list_remove(&sdp_query_context->connections, (btstack_linked_item_t*) connection); 426 btstack_memory_avdtp_connection_free(connection); 427 avdtp_signaling_emit_connection_established(sdp_query_context->avdtp_callback, sdp_query_context->avdtp_cid, connection->remote_addr, SDP_SERVICE_NOT_FOUND); 428 log_info("AVDTP: SDP query, remote device does not support required role."); 429 break; 430 } 431 if (!sdp_query_context->avdtp_l2cap_psm) { 432 btstack_linked_list_remove(&sdp_query_context->connections, (btstack_linked_item_t*)connection); 433 btstack_memory_avdtp_connection_free(connection); 434 avdtp_signaling_emit_connection_established(sdp_query_context->avdtp_callback, sdp_query_context->avdtp_cid, connection->remote_addr, L2CAP_SERVICE_DOES_NOT_EXIST); 435 log_info("AVDTP: SDP query, no l2cap psm found."); 436 break; 437 } 438 connection->state = AVDTP_SIGNALING_CONNECTION_W4_L2CAP_CONNECTED; 439 l2cap_create_channel(sdp_query_context->packet_handler, connection->remote_addr, sdp_query_context->avdtp_l2cap_psm, l2cap_max_mtu(), NULL); 440 break; 441 } 442 } 443 444 445 void avdtp_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size, avdtp_context_t * context){ 446 bd_addr_t event_addr; 447 uint16_t psm; 448 uint16_t local_cid; 449 uint8_t status; 450 avdtp_stream_endpoint_t * stream_endpoint = NULL; 451 avdtp_connection_t * connection = NULL; 452 btstack_linked_list_t * avdtp_connections = &context->connections; 453 btstack_linked_list_t * stream_endpoints = &context->stream_endpoints; 454 handle_media_data = context->handle_media_data; 455 // log_info("avdtp_packet_handler packet type %02x, event %02x ", packet_type, hci_event_packet_get_type(packet)); 456 switch (packet_type) { 457 case L2CAP_DATA_PACKET: 458 connection = avdtp_connection_for_l2cap_signaling_cid(channel, context); 459 if (connection){ 460 handle_l2cap_data_packet_for_signaling_connection(connection, packet, size, context); 461 break; 462 } 463 464 stream_endpoint = avdtp_stream_endpoint_for_l2cap_cid(channel, context); 465 if (!stream_endpoint){ 466 if (!connection) break; 467 handle_l2cap_data_packet_for_signaling_connection(connection, packet, size, context); 468 break; 469 } 470 471 if (stream_endpoint->connection){ 472 if (channel == stream_endpoint->connection->l2cap_signaling_cid){ 473 int offset = avdtp_read_signaling_header(&stream_endpoint->connection->signaling_packet, packet, size); 474 if (stream_endpoint->connection->signaling_packet.message_type == AVDTP_CMD_MSG){ 475 avdtp_acceptor_stream_config_subsm(stream_endpoint->connection, packet, size, offset, context); 476 } else { 477 avdtp_initiator_stream_config_subsm(stream_endpoint->connection, packet, size, offset, context); 478 } 479 break; 480 } 481 } 482 483 if (channel == stream_endpoint->l2cap_media_cid){ 484 if (handle_media_data){ 485 (*handle_media_data)(avdtp_local_seid(stream_endpoint), packet, size); 486 } 487 break; 488 } 489 490 if (channel == stream_endpoint->l2cap_reporting_cid){ 491 // TODO 492 log_info("L2CAP_DATA_PACKET for reporting: NOT IMPLEMENTED"); 493 } else if (channel == stream_endpoint->l2cap_recovery_cid){ 494 // TODO 495 log_info("L2CAP_DATA_PACKET for recovery: NOT IMPLEMENTED"); 496 } else { 497 log_error("avdtp packet handler L2CAP_DATA_PACKET: local cid 0x%02x not found", channel); 498 } 499 break; 500 501 case HCI_EVENT_PACKET: 502 switch (hci_event_packet_get_type(packet)) { 503 case L2CAP_EVENT_INCOMING_CONNECTION: 504 l2cap_event_incoming_connection_get_address(packet, event_addr); 505 local_cid = l2cap_event_incoming_connection_get_local_cid(packet); 506 connection = avdtp_connection_for_bd_addr(event_addr, context); 507 508 if (!connection || connection->state == AVDTP_SIGNALING_CONNECTION_W4_L2CAP_CONNECTED){ 509 connection = avdtp_create_connection(event_addr, context); 510 connection->state = AVDTP_SIGNALING_CONNECTION_W4_L2CAP_CONNECTED; 511 log_info("L2CAP_EVENT_INCOMING_CONNECTION, connection %p, state connection %d", connection, connection->state); 512 l2cap_accept_connection(local_cid); 513 break; 514 } 515 516 stream_endpoint = avdtp_stream_endpoint_for_seid(connection->local_seid, context); 517 if (!stream_endpoint) { 518 log_info("L2CAP_EVENT_INCOMING_CONNECTION no streamendpoint found for seid %d", connection->local_seid); 519 break; 520 } 521 522 if (stream_endpoint->l2cap_media_cid == 0){ 523 if (stream_endpoint->state != AVDTP_STREAM_ENDPOINT_W4_L2CAP_FOR_MEDIA_CONNECTED) break; 524 l2cap_accept_connection(local_cid); 525 break; 526 } 527 break; 528 529 case L2CAP_EVENT_CHANNEL_OPENED: 530 psm = l2cap_event_channel_opened_get_psm(packet); 531 if (psm != BLUETOOTH_PROTOCOL_AVDTP){ 532 log_info("unexpected PSM - Not implemented yet, avdtp sink: L2CAP_EVENT_CHANNEL_OPENED"); 533 return; 534 } 535 536 status = l2cap_event_channel_opened_get_status(packet); 537 // inform about new l2cap connection 538 l2cap_event_channel_opened_get_address(packet, event_addr); 539 local_cid = l2cap_event_channel_opened_get_local_cid(packet); 540 connection = avdtp_connection_for_bd_addr(event_addr, context); 541 542 log_info("L2CAP_EVENT_CHANNEL_OPENED: status %d, cid 0x%02x , signaling connection %p \n", status, local_cid, connection); 543 connection = avdtp_connection_for_bd_addr(event_addr, context); 544 if (!connection){ 545 log_info("L2CAP_EVENT_CHANNEL_OPENED 2: status %d, signaling connection %p \n", status, connection); 546 break; 547 } 548 549 if (connection->l2cap_signaling_cid == 0) { 550 if (status){ 551 log_info("L2CAP connection to %s failed. status code 0x%02x", bd_addr_to_str(event_addr), status); 552 connection->state = AVDTP_SIGNALING_CONNECTION_IDLE; 553 connection->l2cap_signaling_cid = 0; 554 avdtp_signaling_emit_connection_established(context->avdtp_callback, connection->avdtp_cid, event_addr, l2cap_event_channel_opened_get_status(packet)); 555 break; 556 } 557 if (connection->state != AVDTP_SIGNALING_CONNECTION_W4_L2CAP_CONNECTED) { 558 log_info("L2CAP connection to %s failed. status code 0x%02x", bd_addr_to_str(event_addr), status); 559 avdtp_signaling_emit_connection_established(context->avdtp_callback, connection->avdtp_cid, event_addr, AVDTP_CONNECTION_IN_WRONG_STATE); 560 break; 561 } 562 connection->l2cap_signaling_cid = local_cid; 563 connection->local_seid = 0; 564 connection->state = AVDTP_SIGNALING_CONNECTION_OPENED; 565 log_info(" -> AVDTP_SIGNALING_CONNECTION_OPENED, connection %p, avdtp_cid 0x%02x", connection, local_cid); 566 avdtp_signaling_emit_connection_established(context->avdtp_callback, connection->avdtp_cid, event_addr, 0); 567 break; 568 } 569 570 stream_endpoint = avdtp_stream_endpoint_for_seid(connection->local_seid, context); 571 if (!stream_endpoint){ 572 log_info("L2CAP_EVENT_CHANNEL_OPENED: stream_endpoint not found"); 573 return; 574 } 575 576 if (stream_endpoint->l2cap_media_cid == 0){ 577 status = l2cap_event_channel_opened_get_status(packet); 578 if (status){ 579 log_info(" -> AVDTP_STREAM_ENDPOINT_OPENED failed with status %d, avdtp cid 0x%02x, l2cap_media_cid 0x%02x, local seid %d, remote seid %d", status, context->avdtp_cid, stream_endpoint->l2cap_media_cid, avdtp_local_seid(stream_endpoint), avdtp_remote_seid(stream_endpoint)); 580 stream_endpoint->state = AVDTP_STREAM_ENDPOINT_IDLE; 581 avdtp_streaming_emit_connection_established(context->avdtp_callback, context->avdtp_cid, event_addr, avdtp_local_seid(stream_endpoint), avdtp_remote_seid(stream_endpoint), status); 582 break; 583 } 584 if (stream_endpoint->state != AVDTP_STREAM_ENDPOINT_W4_L2CAP_FOR_MEDIA_CONNECTED){ 585 log_info(" -> AVDTP_STREAM_ENDPOINT_OPENED failed - stream endpoint in wrong state %d, avdtp cid 0x%02x, l2cap_media_cid 0x%02x, local seid %d, remote seid %d", stream_endpoint->state, connection->avdtp_cid, stream_endpoint->l2cap_media_cid, avdtp_local_seid(stream_endpoint), avdtp_remote_seid(stream_endpoint)); 586 avdtp_streaming_emit_connection_established(context->avdtp_callback, context->avdtp_cid, event_addr, avdtp_local_seid(stream_endpoint), avdtp_remote_seid(stream_endpoint), AVDTP_STREAM_ENDPOINT_IN_WRONG_STATE); 587 break; 588 } 589 590 stream_endpoint->state = AVDTP_STREAM_ENDPOINT_OPENED; 591 stream_endpoint->connection = connection; 592 stream_endpoint->l2cap_media_cid = l2cap_event_channel_opened_get_local_cid(packet); 593 stream_endpoint->media_con_handle = l2cap_event_channel_opened_get_handle(packet); 594 595 log_info(" -> AVDTP_STREAM_ENDPOINT_OPENED, avdtp cid 0x%02x, l2cap_media_cid 0x%02x, local seid %d, remote seid %d", context->avdtp_cid, stream_endpoint->l2cap_media_cid, avdtp_local_seid(stream_endpoint), avdtp_remote_seid(stream_endpoint)); 596 avdtp_streaming_emit_connection_established(context->avdtp_callback, context->avdtp_cid, event_addr, avdtp_local_seid(stream_endpoint), avdtp_remote_seid(stream_endpoint), 0); 597 return; 598 } 599 break; 600 601 case L2CAP_EVENT_CHANNEL_CLOSED: 602 local_cid = l2cap_event_channel_closed_get_local_cid(packet); 603 connection = avdtp_connection_for_l2cap_signaling_cid(local_cid, context); 604 stream_endpoint = avdtp_stream_endpoint_for_l2cap_cid(local_cid, context); 605 log_info("received L2CAP_EVENT_CHANNEL_CLOSED, cid 0x%2x, connection %p, stream_endpoint %p", local_cid, connection, stream_endpoint); 606 607 if (connection){ 608 avdtp_signaling_emit_connection_released(context->avdtp_callback, connection->avdtp_cid); 609 btstack_linked_list_remove(avdtp_connections, (btstack_linked_item_t*) connection); 610 btstack_linked_list_iterator_t it; 611 btstack_linked_list_iterator_init(&it, stream_endpoints); 612 while (btstack_linked_list_iterator_has_next(&it)){ 613 avdtp_stream_endpoint_t * _stream_endpoint = (avdtp_stream_endpoint_t *)btstack_linked_list_iterator_next(&it); 614 615 if (_stream_endpoint->connection == connection){ 616 avdtp_initialize_stream_endpoint(_stream_endpoint); 617 } 618 } 619 btstack_memory_avdtp_connection_free(connection); 620 break; 621 } 622 623 if (stream_endpoint){ 624 if (stream_endpoint->l2cap_media_cid == local_cid){ 625 connection = stream_endpoint->connection; 626 avdtp_streaming_emit_connection_released(context->avdtp_callback, context->avdtp_cid, avdtp_local_seid(stream_endpoint)); 627 stream_endpoint->l2cap_media_cid = 0; 628 stream_endpoint->state = AVDTP_STREAM_ENDPOINT_IDLE; 629 stream_endpoint->acceptor_config_state = AVDTP_ACCEPTOR_STREAM_CONFIG_IDLE; 630 stream_endpoint->initiator_config_state = AVDTP_INITIATOR_STREAM_CONFIG_IDLE; 631 stream_endpoint->remote_sep_index = 0; 632 if (connection && connection->disconnect){ 633 avdtp_request_can_send_now_self(connection, connection->l2cap_signaling_cid); 634 } 635 break; 636 } 637 if (stream_endpoint->l2cap_recovery_cid == local_cid){ 638 log_info(" -> L2CAP_EVENT_CHANNEL_CLOSED recovery cid 0x%0x", local_cid); 639 stream_endpoint->l2cap_recovery_cid = 0; 640 break; 641 } 642 643 if (stream_endpoint->l2cap_reporting_cid == local_cid){ 644 log_info("L2CAP_EVENT_CHANNEL_CLOSED reporting cid 0x%0x", local_cid); 645 stream_endpoint->l2cap_reporting_cid = 0; 646 break; 647 } 648 } 649 break; 650 651 case HCI_EVENT_DISCONNECTION_COMPLETE: 652 break; 653 654 case L2CAP_EVENT_CAN_SEND_NOW: 655 connection = avdtp_connection_for_l2cap_signaling_cid(channel, context); 656 if (!connection) { 657 stream_endpoint = avdtp_stream_endpoint_for_l2cap_cid(channel, context); 658 if (!stream_endpoint->connection) break; 659 connection = stream_endpoint->connection; 660 } 661 avdtp_handle_can_send_now(connection, channel, context); 662 break; 663 default: 664 log_info("unknown HCI event type %02x", hci_event_packet_get_type(packet)); 665 break; 666 } 667 break; 668 669 default: 670 // other packet type 671 break; 672 } 673 } 674 675 uint8_t avdtp_disconnect(uint16_t avdtp_cid, avdtp_context_t * context){ 676 avdtp_connection_t * connection = avdtp_connection_for_avdtp_cid(avdtp_cid, context); 677 if (!connection) return BTSTACK_MEMORY_ALLOC_FAILED; 678 if (connection->state == AVDTP_SIGNALING_CONNECTION_IDLE){ 679 avdtp_signaling_emit_connection_released(context->avdtp_callback, connection->avdtp_cid); 680 return ERROR_CODE_SUCCESS; 681 } 682 if (connection->state == AVDTP_SIGNALING_CONNECTION_W4_L2CAP_DISCONNECTED) return ERROR_CODE_SUCCESS; 683 684 connection->disconnect = 1; 685 avdtp_request_can_send_now_self(connection, connection->l2cap_signaling_cid); 686 return ERROR_CODE_SUCCESS; 687 } 688 689 uint8_t avdtp_open_stream(uint16_t avdtp_cid, uint8_t local_seid, uint8_t remote_seid, avdtp_context_t * context){ 690 avdtp_connection_t * connection = avdtp_connection_for_avdtp_cid(avdtp_cid, context); 691 if (!connection){ 692 log_error("avdtp_media_connect: no connection for signaling cid 0x%02x found", avdtp_cid); 693 return AVDTP_CONNECTION_DOES_NOT_EXIST; 694 } 695 if (avdtp_find_remote_sep(connection, remote_seid) == 0xFF){ 696 log_error("avdtp_media_connect: no remote sep for seid %d found", remote_seid); 697 return AVDTP_SEID_DOES_NOT_EXIST; 698 } 699 700 if (connection->state != AVDTP_SIGNALING_CONNECTION_OPENED) { 701 log_error("avdtp_media_connect: wrong connection state %d", connection->state); 702 return AVDTP_CONNECTION_IN_WRONG_STATE; 703 } 704 705 avdtp_stream_endpoint_t * stream_endpoint = avdtp_stream_endpoint_with_seid(local_seid, context); 706 if (!stream_endpoint) { 707 log_error("avdtp_media_connect: no stream_endpoint with seid %d found", local_seid); 708 return AVDTP_SEID_DOES_NOT_EXIST; 709 } 710 711 if (stream_endpoint->state < AVDTP_STREAM_ENDPOINT_CONFIGURED) return AVDTP_STREAM_ENDPOINT_IN_WRONG_STATE; 712 if (stream_endpoint->remote_sep_index == AVDTP_INVALID_SEP_INDEX) return AVDTP_SEID_DOES_NOT_EXIST; 713 714 connection->initiator_transaction_label++; 715 connection->remote_seid = remote_seid; 716 connection->local_seid = local_seid; 717 stream_endpoint->initiator_config_state = AVDTP_INITIATOR_W2_OPEN_STREAM; 718 stream_endpoint->state = AVDTP_STREAM_ENDPOINT_W2_REQUEST_OPEN_STREAM; 719 avdtp_request_can_send_now_initiator(connection, connection->l2cap_signaling_cid); 720 return ERROR_CODE_SUCCESS; 721 } 722 723 uint8_t avdtp_start_stream(uint16_t avdtp_cid, uint8_t local_seid, avdtp_context_t * context){ 724 avdtp_connection_t * connection = avdtp_connection_for_avdtp_cid(avdtp_cid, context); 725 if (!connection){ 726 log_error("avdtp_start_stream: no connection for signaling cid 0x%02x found", avdtp_cid); 727 return AVDTP_CONNECTION_DOES_NOT_EXIST; 728 } 729 730 avdtp_stream_endpoint_t * stream_endpoint = avdtp_stream_endpoint_with_seid(local_seid, context); 731 if (!stream_endpoint) { 732 log_error("avdtp_start_stream: no stream_endpoint with seid %d found", local_seid); 733 return AVDTP_SEID_DOES_NOT_EXIST; 734 } 735 736 if (stream_endpoint->l2cap_media_cid == 0){ 737 log_error("avdtp_start_stream: no media connection for stream_endpoint with seid %d found", local_seid); 738 return AVDTP_MEDIA_CONNECTION_DOES_NOT_EXIST; 739 } 740 741 if (stream_endpoint->remote_sep_index == AVDTP_INVALID_SEP_INDEX || stream_endpoint->start_stream){ 742 return AVDTP_STREAM_ENDPOINT_IN_WRONG_STATE; 743 } 744 745 stream_endpoint->start_stream = 1; 746 connection->local_seid = local_seid; 747 avdtp_request_can_send_now_initiator(connection, connection->l2cap_signaling_cid); 748 return ERROR_CODE_SUCCESS; 749 } 750 751 uint8_t avdtp_stop_stream(uint16_t avdtp_cid, uint8_t local_seid, avdtp_context_t * context){ 752 avdtp_connection_t * connection = avdtp_connection_for_avdtp_cid(avdtp_cid, context); 753 if (!connection){ 754 log_error("avdtp_stop_stream: no connection for signaling cid 0x%02x found", avdtp_cid); 755 return AVDTP_CONNECTION_DOES_NOT_EXIST; 756 } 757 758 avdtp_stream_endpoint_t * stream_endpoint = avdtp_stream_endpoint_with_seid(local_seid, context); 759 if (!stream_endpoint) { 760 log_error("avdtp_stop_stream: no stream_endpoint with seid %d found", local_seid); 761 return AVDTP_SEID_DOES_NOT_EXIST; 762 } 763 764 if (stream_endpoint->l2cap_media_cid == 0){ 765 log_error("avdtp_stop_stream: no media connection for stream_endpoint with seid %d found", local_seid); 766 return AVDTP_MEDIA_CONNECTION_DOES_NOT_EXIST; 767 } 768 if (stream_endpoint->remote_sep_index == 0xFF || stream_endpoint->stop_stream) return ERROR_CODE_SUCCESS; 769 770 stream_endpoint->stop_stream = 1; 771 connection->local_seid = local_seid; 772 avdtp_request_can_send_now_initiator(connection, connection->l2cap_signaling_cid); 773 return ERROR_CODE_SUCCESS; 774 } 775 776 uint8_t avdtp_abort_stream(uint16_t avdtp_cid, uint8_t local_seid, avdtp_context_t * context){ 777 avdtp_connection_t * connection = avdtp_connection_for_avdtp_cid(avdtp_cid, context); 778 if (!connection){ 779 log_error("avdtp_abort_stream: no connection for signaling cid 0x%02x found", avdtp_cid); 780 return AVDTP_CONNECTION_DOES_NOT_EXIST; 781 } 782 783 avdtp_stream_endpoint_t * stream_endpoint = avdtp_stream_endpoint_with_seid(local_seid, context); 784 if (!stream_endpoint) { 785 log_error("avdtp_abort_stream: no stream_endpoint with seid %d found", local_seid); 786 return AVDTP_SEID_DOES_NOT_EXIST; 787 } 788 789 if (stream_endpoint->l2cap_media_cid == 0){ 790 log_error("avdtp_abort_stream: no media connection for stream_endpoint with seid %d found", local_seid); 791 return AVDTP_MEDIA_CONNECTION_DOES_NOT_EXIST; 792 } 793 if (stream_endpoint->remote_sep_index == 0xFF || stream_endpoint->abort_stream) return ERROR_CODE_SUCCESS; 794 795 stream_endpoint->abort_stream = 1; 796 connection->local_seid = local_seid; 797 avdtp_request_can_send_now_initiator(connection, connection->l2cap_signaling_cid); 798 return ERROR_CODE_SUCCESS; 799 } 800 801 uint8_t avdtp_suspend_stream(uint16_t avdtp_cid, uint8_t local_seid, avdtp_context_t * context){ 802 avdtp_connection_t * connection = avdtp_connection_for_avdtp_cid(avdtp_cid, context); 803 if (!connection){ 804 log_error("avdtp_suspend_stream: no connection for signaling cid 0x%02x found", avdtp_cid); 805 return AVDTP_CONNECTION_DOES_NOT_EXIST; 806 } 807 808 avdtp_stream_endpoint_t * stream_endpoint = avdtp_stream_endpoint_with_seid(local_seid, context); 809 if (!stream_endpoint) { 810 log_error("avdtp_suspend_stream: no stream_endpoint with seid %d found", local_seid); 811 return AVDTP_SEID_DOES_NOT_EXIST; 812 } 813 814 if (stream_endpoint->l2cap_media_cid == 0){ 815 log_error("avdtp_suspend_stream: no media connection for stream_endpoint with seid %d found", local_seid); 816 return AVDTP_MEDIA_CONNECTION_DOES_NOT_EXIST; 817 } 818 if (stream_endpoint->remote_sep_index == 0xFF || stream_endpoint->suspend_stream) return ERROR_CODE_SUCCESS; 819 820 stream_endpoint->suspend_stream = 1; 821 connection->local_seid = local_seid; 822 avdtp_request_can_send_now_initiator(connection, connection->l2cap_signaling_cid); 823 return ERROR_CODE_SUCCESS; 824 } 825 826 void avdtp_discover_stream_endpoints(uint16_t avdtp_cid, avdtp_context_t * context){ 827 avdtp_connection_t * connection = avdtp_connection_for_avdtp_cid(avdtp_cid, context); 828 if (!connection){ 829 log_error("avdtp_discover_stream_endpoints: no connection for signaling cid 0x%02x found", avdtp_cid); 830 return; 831 } 832 if (connection->state != AVDTP_SIGNALING_CONNECTION_OPENED) return; 833 834 switch (connection->initiator_connection_state){ 835 case AVDTP_SIGNALING_CONNECTION_INITIATOR_IDLE: 836 connection->initiator_transaction_label++; 837 connection->initiator_connection_state = AVDTP_SIGNALING_CONNECTION_INITIATOR_W2_DISCOVER_SEPS; 838 avdtp_request_can_send_now_initiator(connection, connection->l2cap_signaling_cid); 839 break; 840 default: 841 log_error("avdtp_discover_stream_endpoints: wrong state"); 842 break; 843 } 844 } 845 846 847 void avdtp_get_capabilities(uint16_t avdtp_cid, uint8_t remote_seid, avdtp_context_t * context){ 848 avdtp_connection_t * connection = avdtp_connection_for_avdtp_cid(avdtp_cid, context); 849 if (!connection){ 850 log_error("avdtp_get_capabilities: no connection for AVDTP cid 0x%02x found", avdtp_cid); 851 return; 852 } 853 if (connection->state != AVDTP_SIGNALING_CONNECTION_OPENED) return; 854 if (connection->initiator_connection_state != AVDTP_SIGNALING_CONNECTION_INITIATOR_IDLE) return; 855 connection->initiator_transaction_label++; 856 connection->initiator_connection_state = AVDTP_SIGNALING_CONNECTION_INITIATOR_W2_GET_CAPABILITIES; 857 connection->remote_seid = remote_seid; 858 avdtp_request_can_send_now_initiator(connection, connection->l2cap_signaling_cid); 859 } 860 861 862 void avdtp_get_all_capabilities(uint16_t avdtp_cid, uint8_t remote_seid, avdtp_context_t * context){ 863 avdtp_connection_t * connection = avdtp_connection_for_avdtp_cid(avdtp_cid, context); 864 if (!connection){ 865 log_error("avdtp_get_all_capabilities: no connection for AVDTP cid 0x%02x found", avdtp_cid); 866 return; 867 } 868 if (connection->state != AVDTP_SIGNALING_CONNECTION_OPENED) return; 869 if (connection->initiator_connection_state != AVDTP_SIGNALING_CONNECTION_INITIATOR_IDLE) return; 870 connection->initiator_transaction_label++; 871 connection->initiator_connection_state = AVDTP_SIGNALING_CONNECTION_INITIATOR_W2_GET_ALL_CAPABILITIES; 872 connection->remote_seid = remote_seid; 873 avdtp_request_can_send_now_initiator(connection, connection->l2cap_signaling_cid); 874 } 875 876 void avdtp_get_configuration(uint16_t avdtp_cid, uint8_t remote_seid, avdtp_context_t * context){ 877 avdtp_connection_t * connection = avdtp_connection_for_avdtp_cid(avdtp_cid, context); 878 if (!connection){ 879 log_error("avdtp_get_configuration: no connection for AVDTP cid 0x%02x found", avdtp_cid); 880 return; 881 } 882 if (connection->state != AVDTP_SIGNALING_CONNECTION_OPENED) return; 883 if (connection->initiator_connection_state != AVDTP_SIGNALING_CONNECTION_INITIATOR_IDLE) return; 884 connection->initiator_transaction_label++; 885 connection->initiator_connection_state = AVDTP_SIGNALING_CONNECTION_INITIATOR_W2_GET_CONFIGURATION; 886 connection->remote_seid = remote_seid; 887 avdtp_request_can_send_now_initiator(connection, connection->l2cap_signaling_cid); 888 } 889 890 void avdtp_set_configuration(uint16_t avdtp_cid, uint8_t local_seid, uint8_t remote_seid, uint16_t configured_services_bitmap, avdtp_capabilities_t configuration, avdtp_context_t * context){ 891 avdtp_connection_t * connection = avdtp_connection_for_avdtp_cid(avdtp_cid, context); 892 if (!connection){ 893 log_error("avdtp_set_configuration: no connection for AVDTP cid 0x%02x found", avdtp_cid); 894 return; 895 } 896 if (connection->state != AVDTP_SIGNALING_CONNECTION_OPENED) return; 897 if (connection->initiator_connection_state != AVDTP_SIGNALING_CONNECTION_INITIATOR_IDLE) return; 898 899 avdtp_stream_endpoint_t * stream_endpoint = avdtp_stream_endpoint_for_seid(local_seid, context); 900 if (!stream_endpoint) { 901 log_error("avdtp_set_configuration: no initiator stream endpoint for seid %d", local_seid); 902 return; 903 } 904 905 connection->initiator_transaction_label++; 906 connection->remote_seid = remote_seid; 907 connection->local_seid = local_seid; 908 stream_endpoint->remote_configuration_bitmap = configured_services_bitmap; 909 stream_endpoint->remote_configuration = configuration; 910 stream_endpoint->initiator_config_state = AVDTP_INITIATOR_W2_SET_CONFIGURATION; 911 avdtp_request_can_send_now_initiator(connection, connection->l2cap_signaling_cid); 912 } 913 914 void avdtp_reconfigure(uint16_t avdtp_cid, uint8_t local_seid, uint8_t remote_seid, uint16_t configured_services_bitmap, avdtp_capabilities_t configuration, avdtp_context_t * context){ 915 avdtp_connection_t * connection = avdtp_connection_for_avdtp_cid(avdtp_cid, context); 916 if (!connection){ 917 log_error("avdtp_reconfigure: no connection for AVDTP cid 0x%02x found", avdtp_cid); 918 return; 919 } 920 //TODO: if opened only app capabilities, enable reconfigure for not opened 921 if (connection->state < AVDTP_SIGNALING_CONNECTION_OPENED) return; 922 if (connection->initiator_connection_state != AVDTP_SIGNALING_CONNECTION_INITIATOR_IDLE) return; 923 924 avdtp_stream_endpoint_t * stream_endpoint = avdtp_stream_endpoint_for_seid(local_seid, context); 925 if (!stream_endpoint) { 926 log_error("avdtp_reconfigure: no initiator stream endpoint for seid %d", local_seid); 927 return; 928 } 929 930 if (stream_endpoint->remote_sep_index == 0xFF){ 931 log_error("avdtp_reconfigure: no associated remote sep"); 932 return; 933 } 934 935 connection->initiator_transaction_label++; 936 connection->remote_seid = remote_seid; 937 connection->local_seid = local_seid; 938 stream_endpoint->remote_configuration_bitmap = configured_services_bitmap; 939 stream_endpoint->remote_configuration = configuration; 940 stream_endpoint->initiator_config_state = AVDTP_INITIATOR_W2_RECONFIGURE_STREAM_WITH_SEID; 941 avdtp_request_can_send_now_initiator(connection, connection->l2cap_signaling_cid); 942 } 943 944 uint8_t avdtp_remote_seps_num(uint16_t avdtp_cid, avdtp_context_t * context){ 945 avdtp_connection_t * connection = avdtp_connection_for_avdtp_cid(avdtp_cid, context); 946 if (!connection){ 947 log_error("avdtp_suspend: no connection for AVDTP cid 0x%02x found", avdtp_cid); 948 return 0; 949 } 950 return connection->remote_seps_num; 951 } 952 953 avdtp_sep_t * avdtp_remote_sep(uint16_t avdtp_cid, uint8_t index, avdtp_context_t * context){ 954 avdtp_connection_t * connection = avdtp_connection_for_avdtp_cid(avdtp_cid, context); 955 if (!connection){ 956 log_error("avdtp_suspend: no connection for AVDTP cid 0x%02x found", avdtp_cid); 957 return NULL; 958 } 959 return &connection->remote_seps[index]; 960 } 961 962 void avdtp_initialize_sbc_configuration_storage(avdtp_stream_endpoint_t * stream_endpoint, uint8_t * config_storage, uint16_t storage_size, uint8_t * packet, uint16_t packet_size){ 963 UNUSED(packet_size); 964 if (storage_size < 4) { 965 log_error("storage must have 4 bytes"); 966 return; 967 } 968 uint8_t sampling_frequency = avdtp_choose_sbc_sampling_frequency(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_sampling_frequency_bitmap(packet)); 969 uint8_t channel_mode = avdtp_choose_sbc_channel_mode(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_channel_mode_bitmap(packet)); 970 uint8_t block_length = avdtp_choose_sbc_block_length(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_block_length_bitmap(packet)); 971 uint8_t subbands = avdtp_choose_sbc_subbands(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_subbands_bitmap(packet)); 972 973 uint8_t allocation_method = avdtp_choose_sbc_allocation_method(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_allocation_method_bitmap(packet)); 974 uint8_t max_bitpool_value = avdtp_choose_sbc_max_bitpool_value(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_max_bitpool_value(packet)); 975 uint8_t min_bitpool_value = avdtp_choose_sbc_min_bitpool_value(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_min_bitpool_value(packet)); 976 977 config_storage[0] = (sampling_frequency << 4) | channel_mode; 978 config_storage[1] = (block_length << 4) | (subbands << 2) | allocation_method; 979 config_storage[2] = min_bitpool_value; 980 config_storage[3] = max_bitpool_value; 981 982 stream_endpoint->remote_configuration_bitmap = store_bit16(stream_endpoint->remote_configuration_bitmap, AVDTP_MEDIA_CODEC, 1); 983 stream_endpoint->remote_configuration.media_codec.media_type = AVDTP_AUDIO; 984 stream_endpoint->remote_configuration.media_codec.media_codec_type = AVDTP_CODEC_SBC; 985 stream_endpoint->remote_configuration.media_codec.media_codec_information_len = storage_size; 986 stream_endpoint->remote_configuration.media_codec.media_codec_information = config_storage; 987 } 988 989 uint8_t avdtp_choose_sbc_channel_mode(avdtp_stream_endpoint_t * stream_endpoint, uint8_t remote_channel_mode_bitmap){ 990 uint8_t * media_codec = stream_endpoint->sep.capabilities.media_codec.media_codec_information; 991 uint8_t channel_mode_bitmap = (media_codec[0] & 0x0F) & remote_channel_mode_bitmap; 992 993 uint8_t channel_mode = AVDTP_SBC_STEREO; 994 if (channel_mode_bitmap & AVDTP_SBC_JOINT_STEREO){ 995 channel_mode = AVDTP_SBC_JOINT_STEREO; 996 } else if (channel_mode_bitmap & AVDTP_SBC_STEREO){ 997 channel_mode = AVDTP_SBC_STEREO; 998 } else if (channel_mode_bitmap & AVDTP_SBC_DUAL_CHANNEL){ 999 channel_mode = AVDTP_SBC_DUAL_CHANNEL; 1000 } else if (channel_mode_bitmap & AVDTP_SBC_MONO){ 1001 channel_mode = AVDTP_SBC_MONO; 1002 } 1003 return channel_mode; 1004 } 1005 1006 uint8_t avdtp_choose_sbc_allocation_method(avdtp_stream_endpoint_t * stream_endpoint, uint8_t remote_allocation_method_bitmap){ 1007 uint8_t * media_codec = stream_endpoint->sep.capabilities.media_codec.media_codec_information; 1008 uint8_t allocation_method_bitmap = (media_codec[1] & 0x03) & remote_allocation_method_bitmap; 1009 1010 uint8_t allocation_method = AVDTP_SBC_ALLOCATION_METHOD_LOUDNESS; 1011 if (allocation_method_bitmap & AVDTP_SBC_ALLOCATION_METHOD_LOUDNESS){ 1012 allocation_method = AVDTP_SBC_ALLOCATION_METHOD_LOUDNESS; 1013 } else if (allocation_method_bitmap & AVDTP_SBC_ALLOCATION_METHOD_SNR){ 1014 allocation_method = AVDTP_SBC_ALLOCATION_METHOD_SNR; 1015 } 1016 return allocation_method; 1017 } 1018 1019 uint8_t avdtp_stream_endpoint_seid(avdtp_stream_endpoint_t * stream_endpoint){ 1020 if (!stream_endpoint) return 0; 1021 return stream_endpoint->sep.seid; 1022 } 1023 uint8_t avdtp_choose_sbc_subbands(avdtp_stream_endpoint_t * stream_endpoint, uint8_t remote_subbands_bitmap){ 1024 uint8_t * media_codec = stream_endpoint->sep.capabilities.media_codec.media_codec_information; 1025 uint8_t subbands_bitmap = ((media_codec[1] >> 2) & 0x03) & remote_subbands_bitmap; 1026 1027 uint8_t subbands = AVDTP_SBC_SUBBANDS_8; 1028 if (subbands_bitmap & AVDTP_SBC_SUBBANDS_8){ 1029 subbands = AVDTP_SBC_SUBBANDS_8; 1030 } else if (subbands_bitmap & AVDTP_SBC_SUBBANDS_4){ 1031 subbands = AVDTP_SBC_SUBBANDS_4; 1032 } 1033 return subbands; 1034 } 1035 1036 uint8_t avdtp_choose_sbc_block_length(avdtp_stream_endpoint_t * stream_endpoint, uint8_t remote_block_length_bitmap){ 1037 uint8_t * media_codec = stream_endpoint->sep.capabilities.media_codec.media_codec_information; 1038 uint8_t block_length_bitmap = (media_codec[1] >> 4) & remote_block_length_bitmap; 1039 1040 uint8_t block_length = AVDTP_SBC_BLOCK_LENGTH_16; 1041 if (block_length_bitmap & AVDTP_SBC_BLOCK_LENGTH_16){ 1042 block_length = AVDTP_SBC_BLOCK_LENGTH_16; 1043 } else if (block_length_bitmap & AVDTP_SBC_BLOCK_LENGTH_12){ 1044 block_length = AVDTP_SBC_BLOCK_LENGTH_12; 1045 } else if (block_length_bitmap & AVDTP_SBC_BLOCK_LENGTH_8){ 1046 block_length = AVDTP_SBC_BLOCK_LENGTH_8; 1047 } else if (block_length_bitmap & AVDTP_SBC_BLOCK_LENGTH_4){ 1048 block_length = AVDTP_SBC_BLOCK_LENGTH_4; 1049 } 1050 return block_length; 1051 } 1052 1053 uint8_t avdtp_choose_sbc_sampling_frequency(avdtp_stream_endpoint_t * stream_endpoint, uint8_t remote_sampling_frequency_bitmap){ 1054 uint8_t * media_codec = stream_endpoint->sep.capabilities.media_codec.media_codec_information; 1055 uint8_t sampling_frequency_bitmap = (media_codec[0] >> 4) & remote_sampling_frequency_bitmap; 1056 1057 uint8_t sampling_frequency = AVDTP_SBC_44100; 1058 if (sampling_frequency_bitmap & AVDTP_SBC_48000){ 1059 sampling_frequency = AVDTP_SBC_48000; 1060 } else if (sampling_frequency_bitmap & AVDTP_SBC_44100){ 1061 sampling_frequency = AVDTP_SBC_44100; 1062 } else if (sampling_frequency_bitmap & AVDTP_SBC_32000){ 1063 sampling_frequency = AVDTP_SBC_32000; 1064 } else if (sampling_frequency_bitmap & AVDTP_SBC_16000){ 1065 sampling_frequency = AVDTP_SBC_16000; 1066 } 1067 return sampling_frequency; 1068 } 1069 1070 uint8_t avdtp_choose_sbc_max_bitpool_value(avdtp_stream_endpoint_t * stream_endpoint, uint8_t remote_max_bitpool_value){ 1071 uint8_t * media_codec = stream_endpoint->sep.capabilities.media_codec.media_codec_information; 1072 return btstack_min(media_codec[3], remote_max_bitpool_value); 1073 } 1074 1075 uint8_t avdtp_choose_sbc_min_bitpool_value(avdtp_stream_endpoint_t * stream_endpoint, uint8_t remote_min_bitpool_value){ 1076 uint8_t * media_codec = stream_endpoint->sep.capabilities.media_codec.media_codec_information; 1077 return btstack_max(media_codec[2], remote_min_bitpool_value); 1078 } 1079