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 avdtp_connection_t * connection; 58 btstack_packet_handler_t avdtp_callback; 59 avdtp_sep_type_t query_role; 60 btstack_packet_handler_t packet_handler; 61 } avdtp_sdp_query_context_t; 62 63 static avdtp_sdp_query_context_t sdp_query_context; 64 static uint16_t avdtp_cid_counter = 0; 65 66 static void (*handle_media_data)(avdtp_stream_endpoint_t * stream_endpoint, uint8_t *packet, uint16_t size); 67 static void avdtp_handle_sdp_client_query_result(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 68 69 static uint16_t avdtp_get_next_initiator_transaction_label(avdtp_context_t * context){ 70 context->initiator_transaction_id_counter++; 71 if (context->initiator_transaction_id_counter == 0){ 72 context->initiator_transaction_id_counter = 1; 73 } 74 return context->initiator_transaction_id_counter; 75 } 76 77 static uint16_t avdtp_get_next_avdtp_cid(void){ 78 avdtp_cid_counter++; 79 if (avdtp_cid_counter == 0){ 80 avdtp_cid_counter = 1; 81 } 82 return avdtp_cid_counter; 83 } 84 85 static uint16_t avdtp_get_next_local_seid(avdtp_context_t * context){ 86 context->stream_endpoints_id_counter++; 87 if (context->stream_endpoints_id_counter == 0){ 88 context->stream_endpoints_id_counter = 1; 89 } 90 return context->stream_endpoints_id_counter; 91 } 92 93 uint8_t avdtp_connect(bd_addr_t remote, avdtp_sep_type_t query_role, avdtp_context_t * avdtp_context, uint16_t * avdtp_cid){ 94 sdp_query_context.connection = NULL; 95 avdtp_connection_t * connection = avdtp_connection_for_bd_addr(remote, avdtp_context); 96 if (!connection){ 97 connection = avdtp_create_connection(remote, avdtp_context); 98 if (!connection){ 99 log_error("avdtp: not enough memory to create connection"); 100 return BTSTACK_MEMORY_ALLOC_FAILED; 101 } 102 } 103 if (connection->state != AVDTP_SIGNALING_CONNECTION_IDLE){ 104 log_error("avdtp_connect: sink in wrong state,"); 105 return AVDTP_CONNECTION_IN_WRONG_STATE; 106 } 107 108 if (!avdtp_cid) return L2CAP_LOCAL_CID_DOES_NOT_EXIST; 109 110 *avdtp_cid = connection->avdtp_cid; 111 connection->state = AVDTP_SIGNALING_W4_SDP_QUERY_COMPLETE; 112 sdp_query_context.connection = connection; 113 sdp_query_context.query_role = query_role; 114 sdp_query_context.avdtp_callback = avdtp_context->avdtp_callback; 115 sdp_query_context.packet_handler = avdtp_context->packet_handler; 116 117 sdp_client_query_uuid16(&avdtp_handle_sdp_client_query_result, remote, BLUETOOTH_PROTOCOL_AVDTP); 118 return ERROR_CODE_SUCCESS; 119 } 120 121 void avdtp_register_media_transport_category(avdtp_stream_endpoint_t * stream_endpoint){ 122 if (!stream_endpoint){ 123 log_error("avdtp_register_media_transport_category: stream endpoint with given seid is not registered"); 124 return; 125 } 126 uint16_t bitmap = store_bit16(stream_endpoint->sep.registered_service_categories, AVDTP_MEDIA_TRANSPORT, 1); 127 stream_endpoint->sep.registered_service_categories = bitmap; 128 } 129 130 void avdtp_register_reporting_category(avdtp_stream_endpoint_t * stream_endpoint){ 131 if (!stream_endpoint){ 132 log_error("avdtp_register_media_transport_category: stream endpoint with given seid is not registered"); 133 return; 134 } 135 uint16_t bitmap = store_bit16(stream_endpoint->sep.registered_service_categories, AVDTP_REPORTING, 1); 136 stream_endpoint->sep.registered_service_categories = bitmap; 137 } 138 139 void avdtp_register_delay_reporting_category(avdtp_stream_endpoint_t * stream_endpoint){ 140 if (!stream_endpoint){ 141 log_error("avdtp_register_media_transport_category: stream endpoint with given seid is not registered"); 142 return; 143 } 144 uint16_t bitmap = store_bit16(stream_endpoint->sep.registered_service_categories, AVDTP_DELAY_REPORTING, 1); 145 stream_endpoint->sep.registered_service_categories = bitmap; 146 } 147 148 void avdtp_register_recovery_category(avdtp_stream_endpoint_t * stream_endpoint, uint8_t maximum_recovery_window_size, uint8_t maximum_number_media_packets){ 149 if (!stream_endpoint){ 150 log_error("avdtp_register_media_transport_category: stream endpoint with given seid is not registered"); 151 return; 152 } 153 uint16_t bitmap = store_bit16(stream_endpoint->sep.registered_service_categories, AVDTP_RECOVERY, 1); 154 stream_endpoint->sep.registered_service_categories = bitmap; 155 stream_endpoint->sep.capabilities.recovery.recovery_type = 0x01; // 0x01 = RFC2733 156 stream_endpoint->sep.capabilities.recovery.maximum_recovery_window_size = maximum_recovery_window_size; 157 stream_endpoint->sep.capabilities.recovery.maximum_number_media_packets = maximum_number_media_packets; 158 } 159 160 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){ 161 if (!stream_endpoint){ 162 log_error("avdtp_register_media_transport_category: stream endpoint with given seid is not registered"); 163 return; 164 } 165 uint16_t bitmap = store_bit16(stream_endpoint->sep.registered_service_categories, AVDTP_CONTENT_PROTECTION, 1); 166 stream_endpoint->sep.registered_service_categories = bitmap; 167 stream_endpoint->sep.capabilities.content_protection.cp_type = cp_type; 168 stream_endpoint->sep.capabilities.content_protection.cp_type_value = cp_type_value; 169 stream_endpoint->sep.capabilities.content_protection.cp_type_value_len = cp_type_value_len; 170 } 171 172 void avdtp_register_header_compression_category(avdtp_stream_endpoint_t * stream_endpoint, uint8_t back_ch, uint8_t media, uint8_t recovery){ 173 if (!stream_endpoint){ 174 log_error("avdtp_register_media_transport_category: stream endpoint with given seid is not registered"); 175 return; 176 } 177 uint16_t bitmap = store_bit16(stream_endpoint->sep.registered_service_categories, AVDTP_HEADER_COMPRESSION, 1); 178 stream_endpoint->sep.registered_service_categories = bitmap; 179 stream_endpoint->sep.capabilities.header_compression.back_ch = back_ch; 180 stream_endpoint->sep.capabilities.header_compression.media = media; 181 stream_endpoint->sep.capabilities.header_compression.recovery = recovery; 182 } 183 184 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){ 185 if (!stream_endpoint){ 186 log_error("avdtp_register_media_transport_category: stream endpoint with given seid is not registered"); 187 return; 188 } 189 uint16_t bitmap = store_bit16(stream_endpoint->sep.registered_service_categories, AVDTP_MEDIA_CODEC, 1); 190 stream_endpoint->sep.registered_service_categories = bitmap; 191 stream_endpoint->sep.capabilities.media_codec.media_type = media_type; 192 stream_endpoint->sep.capabilities.media_codec.media_codec_type = media_codec_type; 193 stream_endpoint->sep.capabilities.media_codec.media_codec_information = media_codec_info; 194 stream_endpoint->sep.capabilities.media_codec.media_codec_information_len = media_codec_info_len; 195 } 196 197 void avdtp_register_multiplexing_category(avdtp_stream_endpoint_t * stream_endpoint, uint8_t fragmentation){ 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_MULTIPLEXING, 1); 203 stream_endpoint->sep.registered_service_categories = bitmap; 204 stream_endpoint->sep.capabilities.multiplexing_mode.fragmentation = fragmentation; 205 } 206 207 208 /* START: tracking can send now requests pro l2cap cid */ 209 void avdtp_handle_can_send_now(avdtp_connection_t * connection, uint16_t l2cap_cid, avdtp_context_t * context){ 210 if (connection->wait_to_send_acceptor){ 211 connection->wait_to_send_acceptor = 0; 212 avdtp_acceptor_stream_config_subsm_run(connection, context); 213 } else if (connection->wait_to_send_initiator){ 214 connection->wait_to_send_initiator = 0; 215 avdtp_initiator_stream_config_subsm_run(connection, context); 216 } else if (connection->wait_to_send_self){ 217 connection->wait_to_send_self = 0; 218 if (connection->disconnect){ 219 btstack_linked_list_iterator_t it; 220 btstack_linked_list_iterator_init(&it, &context->stream_endpoints); 221 while (btstack_linked_list_iterator_has_next(&it)){ 222 avdtp_stream_endpoint_t * stream_endpoint = (avdtp_stream_endpoint_t *)btstack_linked_list_iterator_next(&it); 223 if (stream_endpoint->connection == connection){ 224 if (stream_endpoint->state >= AVDTP_STREAM_ENDPOINT_OPENED && stream_endpoint->state != AVDTP_STREAM_ENDPOINT_W4_L2CAP_FOR_MEDIA_DISCONNECTED){ 225 stream_endpoint->state = AVDTP_STREAM_ENDPOINT_W4_L2CAP_FOR_MEDIA_DISCONNECTED; 226 avdtp_request_can_send_now_self(connection, connection->l2cap_signaling_cid); 227 l2cap_disconnect(stream_endpoint->l2cap_media_cid, 0); 228 return; 229 } 230 } 231 } 232 connection->disconnect = 0; 233 connection->state = AVDTP_SIGNALING_CONNECTION_W4_L2CAP_DISCONNECTED; 234 l2cap_disconnect(connection->l2cap_signaling_cid, 0); 235 return; 236 } 237 } 238 239 // re-register 240 int more_to_send = connection->wait_to_send_acceptor || connection->wait_to_send_initiator || connection->wait_to_send_self; 241 if (more_to_send){ 242 l2cap_request_can_send_now_event(l2cap_cid); 243 } 244 } 245 /* END: tracking can send now requests pro l2cap cid */ 246 247 avdtp_connection_t * avdtp_create_connection(bd_addr_t remote_addr, avdtp_context_t * context){ 248 avdtp_connection_t * connection = btstack_memory_avdtp_connection_get(); 249 if (!connection){ 250 log_error("avdtp: not enough memory to create connection"); 251 return NULL; 252 } 253 memset(connection, 0, sizeof(avdtp_connection_t)); 254 connection->state = AVDTP_SIGNALING_CONNECTION_IDLE; 255 connection->initiator_transaction_label = avdtp_get_next_initiator_transaction_label(context); 256 connection->avdtp_cid = avdtp_get_next_avdtp_cid(); 257 memcpy(connection->remote_addr, remote_addr, 6); 258 btstack_linked_list_add(&context->connections, (btstack_linked_item_t *) connection); 259 return connection; 260 } 261 262 avdtp_stream_endpoint_t * avdtp_create_stream_endpoint(avdtp_sep_type_t sep_type, avdtp_media_type_t media_type, avdtp_context_t * context){ 263 avdtp_stream_endpoint_t * stream_endpoint = btstack_memory_avdtp_stream_endpoint_get(); 264 if (!stream_endpoint){ 265 log_error("avdtp: not enough memory to create stream endpoint"); 266 return NULL; 267 } 268 memset(stream_endpoint, 0, sizeof(avdtp_stream_endpoint_t)); 269 stream_endpoint->sep.seid = avdtp_get_next_local_seid(context); 270 stream_endpoint->sep.media_type = media_type; 271 stream_endpoint->sep.type = sep_type; 272 btstack_linked_list_add(&context->stream_endpoints, (btstack_linked_item_t *) stream_endpoint); 273 return stream_endpoint; 274 } 275 276 277 static void handle_l2cap_data_packet_for_signaling_connection(avdtp_connection_t * connection, uint8_t *packet, uint16_t size, avdtp_context_t * context){ 278 int offset = avdtp_read_signaling_header(&connection->signaling_packet, packet, size); 279 switch (connection->signaling_packet.message_type){ 280 case AVDTP_CMD_MSG: 281 avdtp_acceptor_stream_config_subsm(connection, packet, size, offset, context); 282 break; 283 default: 284 avdtp_initiator_stream_config_subsm(connection, packet, size, offset, context); 285 break; 286 } 287 } 288 289 static void stream_endpoint_state_machine(avdtp_connection_t * connection, avdtp_stream_endpoint_t * stream_endpoint, uint8_t packet_type, uint8_t event, uint8_t *packet, uint16_t size, avdtp_context_t * context){ 290 uint16_t local_cid; 291 uint8_t status; 292 switch (packet_type){ 293 case L2CAP_DATA_PACKET:{ 294 int offset = avdtp_read_signaling_header(&connection->signaling_packet, packet, size); 295 if (connection->signaling_packet.message_type == AVDTP_CMD_MSG){ 296 avdtp_acceptor_stream_config_subsm(connection, packet, size, offset, context); 297 } else { 298 avdtp_initiator_stream_config_subsm(connection, packet, size, offset, context); 299 } 300 break; 301 } 302 case HCI_EVENT_PACKET: 303 switch (event){ 304 case L2CAP_EVENT_CHANNEL_OPENED: 305 if (stream_endpoint->l2cap_media_cid == 0){ 306 if (stream_endpoint->state != AVDTP_STREAM_ENDPOINT_W4_L2CAP_FOR_MEDIA_CONNECTED){ 307 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)); 308 avdtp_streaming_emit_connection_established(context->avdtp_callback, connection->avdtp_cid, avdtp_local_seid(stream_endpoint), avdtp_remote_seid(stream_endpoint), AVDTP_STREAM_ENDPOINT_IN_WRONG_STATE); 309 break; 310 } 311 status = l2cap_event_channel_opened_get_status(packet); 312 if (status){ 313 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, connection->avdtp_cid, stream_endpoint->l2cap_media_cid, avdtp_local_seid(stream_endpoint), avdtp_remote_seid(stream_endpoint)); 314 avdtp_streaming_emit_connection_established(context->avdtp_callback, connection->avdtp_cid, avdtp_local_seid(stream_endpoint), avdtp_remote_seid(stream_endpoint), status); 315 break; 316 } 317 stream_endpoint->state = AVDTP_STREAM_ENDPOINT_OPENED; 318 stream_endpoint->connection = connection; 319 stream_endpoint->l2cap_media_cid = l2cap_event_channel_opened_get_local_cid(packet); 320 stream_endpoint->media_con_handle = l2cap_event_channel_opened_get_handle(packet); 321 322 // log_info(" -> AVDTP_STREAM_ENDPOINT_OPENED, avdtp cid 0x%02x, l2cap_media_cid 0x%02x, local seid %d, remote seid %d", connection->avdtp_cid, stream_endpoint->l2cap_media_cid, avdtp_local_seid(stream_endpoint), avdtp_remote_seid(stream_endpoint)); 323 avdtp_streaming_emit_connection_established(context->avdtp_callback, connection->avdtp_cid, avdtp_local_seid(stream_endpoint), avdtp_remote_seid(stream_endpoint), 0); 324 break; 325 } 326 break; 327 case L2CAP_EVENT_CHANNEL_CLOSED: 328 local_cid = l2cap_event_channel_closed_get_local_cid(packet); 329 if (stream_endpoint->l2cap_media_cid == local_cid){ 330 avdtp_streaming_emit_connection_released(context->avdtp_callback, stream_endpoint->connection->avdtp_cid, avdtp_local_seid(stream_endpoint)); 331 stream_endpoint->l2cap_media_cid = 0; 332 stream_endpoint->state = AVDTP_STREAM_ENDPOINT_IDLE; 333 stream_endpoint->acceptor_config_state = AVDTP_ACCEPTOR_STREAM_CONFIG_IDLE; 334 stream_endpoint->initiator_config_state = AVDTP_INITIATOR_STREAM_CONFIG_IDLE; 335 stream_endpoint->remote_sep_index = 0; 336 break; 337 } 338 if (stream_endpoint->l2cap_recovery_cid == local_cid){ 339 log_info(" -> L2CAP_EVENT_CHANNEL_CLOSED recovery cid 0x%0x", local_cid); 340 stream_endpoint->l2cap_recovery_cid = 0; 341 break; 342 } 343 344 if (stream_endpoint->l2cap_reporting_cid == local_cid){ 345 log_info("L2CAP_EVENT_CHANNEL_CLOSED reporting cid 0x%0x", local_cid); 346 stream_endpoint->l2cap_reporting_cid = 0; 347 break; 348 } 349 break; 350 default: 351 break; 352 } 353 break; 354 default: 355 break; 356 } 357 } 358 359 static void avdtp_handle_sdp_client_query_result(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 360 UNUSED(packet_type); 361 UNUSED(channel); 362 UNUSED(size); 363 364 des_iterator_t des_list_it; 365 des_iterator_t prot_it; 366 uint16_t avdtp_l2cap_psm = 0; 367 uint16_t avdtp_version = 0; 368 // uint32_t avdtp_remote_uuid = 0; 369 370 if (!sdp_query_context.connection) return; 371 372 switch (hci_event_packet_get_type(packet)){ 373 case SDP_EVENT_QUERY_ATTRIBUTE_VALUE: 374 // Handle new SDP record 375 if (sdp_event_query_attribute_byte_get_record_id(packet) != record_id) { 376 record_id = sdp_event_query_attribute_byte_get_record_id(packet); 377 // log_info("SDP Record: Nr: %d", record_id); 378 } 379 380 if (sdp_event_query_attribute_byte_get_attribute_length(packet) <= attribute_value_buffer_size) { 381 attribute_value[sdp_event_query_attribute_byte_get_data_offset(packet)] = sdp_event_query_attribute_byte_get_data(packet); 382 383 if ((uint16_t)(sdp_event_query_attribute_byte_get_data_offset(packet)+1) == sdp_event_query_attribute_byte_get_attribute_length(packet)) { 384 385 switch(sdp_event_query_attribute_byte_get_attribute_id(packet)) { 386 case BLUETOOTH_ATTRIBUTE_SERVICE_CLASS_ID_LIST: 387 if (de_get_element_type(attribute_value) != DE_DES) break; 388 for (des_iterator_init(&des_list_it, attribute_value); des_iterator_has_more(&des_list_it); des_iterator_next(&des_list_it)) { 389 uint8_t * element = des_iterator_get_element(&des_list_it); 390 if (de_get_element_type(element) != DE_UUID) continue; 391 uint32_t uuid = de_get_uuid32(element); 392 switch (uuid){ 393 case BLUETOOTH_SERVICE_CLASS_AUDIO_SOURCE: 394 if (sdp_query_context.query_role != AVDTP_SOURCE) { 395 sdp_query_context.connection->state = AVDTP_SIGNALING_CONNECTION_IDLE; 396 avdtp_signaling_emit_connection_established(sdp_query_context.avdtp_callback, sdp_query_context.connection->avdtp_cid, sdp_query_context.connection->remote_addr, SDP_SERVICE_NOT_FOUND); 397 break; 398 } 399 // log_info("SDP Attribute 0x%04x: AVDTP SOURCE protocol UUID: 0x%04x", sdp_event_query_attribute_byte_get_attribute_id(packet), uuid); 400 // avdtp_remote_uuid = uuid; 401 break; 402 case BLUETOOTH_SERVICE_CLASS_AUDIO_SINK: 403 if (sdp_query_context.query_role != AVDTP_SINK) { 404 sdp_query_context.connection->state = AVDTP_SIGNALING_CONNECTION_IDLE; 405 avdtp_signaling_emit_connection_established(sdp_query_context.avdtp_callback, sdp_query_context.connection->avdtp_cid, sdp_query_context.connection->remote_addr, SDP_SERVICE_NOT_FOUND); 406 break; 407 } 408 // log_info("SDP Attribute 0x%04x: AVDTP SINK protocol UUID: 0x%04x", sdp_event_query_attribute_byte_get_attribute_id(packet), uuid); 409 // avdtp_remote_uuid = uuid; 410 break; 411 default: 412 break; 413 } 414 } 415 break; 416 417 case BLUETOOTH_ATTRIBUTE_PROTOCOL_DESCRIPTOR_LIST: { 418 // log_info("SDP Attribute: 0x%04x", sdp_event_query_attribute_byte_get_attribute_id(packet)); 419 420 for (des_iterator_init(&des_list_it, attribute_value); des_iterator_has_more(&des_list_it); des_iterator_next(&des_list_it)) { 421 uint8_t *des_element; 422 uint8_t *element; 423 uint32_t uuid; 424 425 if (des_iterator_get_type(&des_list_it) != DE_DES) continue; 426 427 des_element = des_iterator_get_element(&des_list_it); 428 des_iterator_init(&prot_it, des_element); 429 element = des_iterator_get_element(&prot_it); 430 431 if (de_get_element_type(element) != DE_UUID) continue; 432 433 uuid = de_get_uuid32(element); 434 switch (uuid){ 435 case BLUETOOTH_PROTOCOL_L2CAP: 436 if (!des_iterator_has_more(&prot_it)) continue; 437 des_iterator_next(&prot_it); 438 de_element_get_uint16(des_iterator_get_element(&prot_it), &avdtp_l2cap_psm); 439 break; 440 case BLUETOOTH_PROTOCOL_AVDTP: 441 if (!des_iterator_has_more(&prot_it)) continue; 442 des_iterator_next(&prot_it); 443 de_element_get_uint16(des_iterator_get_element(&prot_it), &avdtp_version); 444 break; 445 default: 446 break; 447 } 448 } 449 if (!avdtp_l2cap_psm) { 450 sdp_query_context.connection->state = AVDTP_SIGNALING_CONNECTION_IDLE; 451 avdtp_signaling_emit_connection_established(sdp_query_context.avdtp_callback, sdp_query_context.connection->avdtp_cid, sdp_query_context.connection->remote_addr, L2CAP_SERVICE_DOES_NOT_EXIST); 452 break; 453 } 454 sdp_query_context.connection->state = AVDTP_SIGNALING_CONNECTION_W4_L2CAP_CONNECTED; 455 l2cap_create_channel(sdp_query_context.packet_handler, sdp_query_context.connection->remote_addr, avdtp_l2cap_psm, l2cap_max_mtu(), NULL); 456 } 457 break; 458 default: 459 break; 460 } 461 } 462 } else { 463 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)); 464 } 465 break; 466 467 case SDP_EVENT_QUERY_COMPLETE: 468 log_info("General query done with status %d.", sdp_event_query_complete_get_status(packet)); 469 break; 470 } 471 } 472 473 474 void avdtp_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size, avdtp_context_t * context){ 475 bd_addr_t event_addr; 476 uint16_t psm; 477 uint16_t local_cid; 478 avdtp_stream_endpoint_t * stream_endpoint = NULL; 479 avdtp_connection_t * connection = NULL; 480 btstack_linked_list_t * avdtp_connections = &context->connections; 481 btstack_linked_list_t * stream_endpoints = &context->stream_endpoints; 482 handle_media_data = context->handle_media_data; 483 // log_info("avdtp_packet_handler packet type %02x, event %02x ", packet_type, hci_event_packet_get_type(packet)); 484 switch (packet_type) { 485 case L2CAP_DATA_PACKET: 486 connection = avdtp_connection_for_l2cap_signaling_cid(channel, context); 487 if (connection){ 488 handle_l2cap_data_packet_for_signaling_connection(connection, packet, size, context); 489 break; 490 } 491 492 stream_endpoint = avdtp_stream_endpoint_for_l2cap_cid(channel, context); 493 if (!stream_endpoint){ 494 if (!connection) break; 495 handle_l2cap_data_packet_for_signaling_connection(connection, packet, size, context); 496 break; 497 } 498 499 if (channel == stream_endpoint->connection->l2cap_signaling_cid){ 500 stream_endpoint_state_machine(stream_endpoint->connection, stream_endpoint, L2CAP_DATA_PACKET, 0, packet, size, context); 501 break; 502 } 503 504 if (channel == stream_endpoint->l2cap_media_cid){ 505 if (handle_media_data){ 506 (*handle_media_data)(stream_endpoint, packet, size); 507 } 508 break; 509 } 510 511 if (channel == stream_endpoint->l2cap_reporting_cid){ 512 // TODO 513 log_info("L2CAP_DATA_PACKET for reporting: NOT IMPLEMENTED"); 514 } else if (channel == stream_endpoint->l2cap_recovery_cid){ 515 // TODO 516 log_info("L2CAP_DATA_PACKET for recovery: NOT IMPLEMENTED"); 517 } else { 518 log_error("avdtp packet handler L2CAP_DATA_PACKET: local cid 0x%02x not found", channel); 519 } 520 break; 521 522 case HCI_EVENT_PACKET: 523 switch (hci_event_packet_get_type(packet)) { 524 case L2CAP_EVENT_INCOMING_CONNECTION: 525 l2cap_event_incoming_connection_get_address(packet, event_addr); 526 local_cid = l2cap_event_incoming_connection_get_local_cid(packet); 527 connection = avdtp_connection_for_bd_addr(event_addr, context); 528 529 if (!connection || connection->state == AVDTP_SIGNALING_CONNECTION_W4_L2CAP_CONNECTED){ 530 connection = avdtp_create_connection(event_addr, context); 531 connection->state = AVDTP_SIGNALING_CONNECTION_W4_L2CAP_CONNECTED; 532 log_info("L2CAP_EVENT_INCOMING_CONNECTION, connection %p, state connection %d", connection, connection->state); 533 l2cap_accept_connection(local_cid); 534 break; 535 } 536 537 stream_endpoint = avdtp_stream_endpoint_for_seid(connection->local_seid, context); 538 if (!stream_endpoint) { 539 log_info("L2CAP_EVENT_INCOMING_CONNECTION no streamendpoint found for seid %d", connection->local_seid); 540 break; 541 } 542 543 if (stream_endpoint->l2cap_media_cid == 0){ 544 if (stream_endpoint->state != AVDTP_STREAM_ENDPOINT_W4_L2CAP_FOR_MEDIA_CONNECTED) break; 545 l2cap_accept_connection(local_cid); 546 break; 547 } 548 break; 549 550 case L2CAP_EVENT_CHANNEL_OPENED: 551 // inform about new l2cap connection 552 l2cap_event_channel_opened_get_address(packet, event_addr); 553 local_cid = l2cap_event_channel_opened_get_local_cid(packet); 554 if (l2cap_event_channel_opened_get_status(packet)){ 555 avdtp_signaling_emit_connection_established(context->avdtp_callback, connection->avdtp_cid, event_addr, l2cap_event_channel_opened_get_status(packet)); 556 log_error("L2CAP connection to connection %s failed. status code 0x%02x", 557 bd_addr_to_str(event_addr), l2cap_event_channel_opened_get_status(packet)); 558 break; 559 } 560 psm = l2cap_event_channel_opened_get_psm(packet); 561 if (psm != BLUETOOTH_PROTOCOL_AVDTP){ 562 log_error("unexpected PSM - Not implemented yet, avdtp sink: L2CAP_EVENT_CHANNEL_OPENED"); 563 return; 564 } 565 // log_info("L2CAP_EVENT_CHANNEL_OPENED: Channel successfully opened: %s, handle 0x%02x, psm 0x%02x, local cid 0x%02x, remote cid 0x%02x", 566 // bd_addr_to_str(event_addr), l2cap_event_channel_opened_get_handle(packet), psm, local_cid, l2cap_event_channel_opened_get_remote_cid(packet)); 567 568 if (psm != BLUETOOTH_PROTOCOL_AVDTP) break; 569 570 connection = avdtp_connection_for_bd_addr(event_addr, context); 571 if (!connection) break; 572 573 if (connection->l2cap_signaling_cid == 0) { 574 if (connection->state != AVDTP_SIGNALING_CONNECTION_W4_L2CAP_CONNECTED) break; 575 connection->l2cap_signaling_cid = local_cid; 576 connection->local_seid = 0; 577 connection->state = AVDTP_SIGNALING_CONNECTION_OPENED; 578 log_info(" -> AVDTP_SIGNALING_CONNECTION_OPENED, connection %p, avdtp_cid 0x%02x", connection, connection->avdtp_cid); 579 avdtp_signaling_emit_connection_established(context->avdtp_callback, connection->avdtp_cid, event_addr, 0); 580 break; 581 } 582 583 stream_endpoint = avdtp_stream_endpoint_for_seid(connection->local_seid, context); 584 if (!stream_endpoint){ 585 log_info("L2CAP_EVENT_CHANNEL_OPENED: stream_endpoint not found"); 586 return; 587 } 588 stream_endpoint_state_machine(connection, stream_endpoint, HCI_EVENT_PACKET, L2CAP_EVENT_CHANNEL_OPENED, packet, size, context); 589 break; 590 591 case L2CAP_EVENT_CHANNEL_CLOSED: 592 local_cid = l2cap_event_channel_closed_get_local_cid(packet); 593 connection = avdtp_connection_for_l2cap_signaling_cid(local_cid, context); 594 stream_endpoint = avdtp_stream_endpoint_for_l2cap_cid(local_cid, context); 595 596 if (stream_endpoint){ 597 stream_endpoint_state_machine(connection, stream_endpoint, HCI_EVENT_PACKET, L2CAP_EVENT_CHANNEL_CLOSED, packet, size, context); 598 break; 599 } 600 601 if (connection){ 602 avdtp_signaling_emit_connection_released(context->avdtp_callback, connection->avdtp_cid); 603 btstack_linked_list_remove(avdtp_connections, (btstack_linked_item_t*) connection); 604 btstack_linked_list_iterator_t it; 605 btstack_linked_list_iterator_init(&it, stream_endpoints); 606 while (btstack_linked_list_iterator_has_next(&it)){ 607 avdtp_stream_endpoint_t * _stream_endpoint = (avdtp_stream_endpoint_t *)btstack_linked_list_iterator_next(&it); 608 609 if (_stream_endpoint->connection == connection){ 610 avdtp_initialize_stream_endpoint(_stream_endpoint); 611 } 612 } 613 btstack_memory_avdtp_connection_free(connection); 614 break; 615 } 616 break; 617 618 case HCI_EVENT_DISCONNECTION_COMPLETE: 619 break; 620 621 case L2CAP_EVENT_CAN_SEND_NOW: 622 connection = avdtp_connection_for_l2cap_signaling_cid(channel, context); 623 if (!connection) { 624 stream_endpoint = avdtp_stream_endpoint_for_l2cap_cid(channel, context); 625 if (!stream_endpoint->connection) break; 626 connection = stream_endpoint->connection; 627 } 628 avdtp_handle_can_send_now(connection, channel, context); 629 break; 630 default: 631 log_info("unknown HCI event type %02x", hci_event_packet_get_type(packet)); 632 break; 633 } 634 break; 635 636 default: 637 // other packet type 638 break; 639 } 640 } 641 642 uint8_t avdtp_disconnect(uint16_t avdtp_cid, avdtp_context_t * context){ 643 avdtp_connection_t * connection = avdtp_connection_for_avdtp_cid(avdtp_cid, context); 644 if (!connection) return BTSTACK_MEMORY_ALLOC_FAILED; 645 if (connection->state == AVDTP_SIGNALING_CONNECTION_IDLE) return AVDTP_CONNECTION_IN_WRONG_STATE; 646 if (connection->state == AVDTP_SIGNALING_CONNECTION_W4_L2CAP_DISCONNECTED) return AVDTP_CONNECTION_IN_WRONG_STATE; 647 648 connection->disconnect = 1; 649 avdtp_request_can_send_now_self(connection, connection->l2cap_signaling_cid); 650 return ERROR_CODE_SUCCESS; 651 } 652 653 uint8_t avdtp_open_stream(uint16_t avdtp_cid, uint8_t local_seid, uint8_t remote_seid, avdtp_context_t * context){ 654 avdtp_connection_t * connection = avdtp_connection_for_avdtp_cid(avdtp_cid, context); 655 if (!connection){ 656 log_error("avdtp_media_connect: no connection for signaling cid 0x%02x found", avdtp_cid); 657 return AVDTP_CONNECTION_DOES_NOT_EXIST; 658 } 659 if (avdtp_find_remote_sep(connection, remote_seid) == 0xFF){ 660 log_error("avdtp_media_connect: no remote sep for seid %d found", remote_seid); 661 return AVDTP_SEID_DOES_NOT_EXIST; 662 } 663 664 if (connection->state != AVDTP_SIGNALING_CONNECTION_OPENED) { 665 log_error("avdtp_media_connect: wrong connection state %d", connection->state); 666 return AVDTP_CONNECTION_IN_WRONG_STATE; 667 } 668 669 avdtp_stream_endpoint_t * stream_endpoint = avdtp_stream_endpoint_with_seid(local_seid, context); 670 if (!stream_endpoint) { 671 log_error("avdtp_media_connect: no stream_endpoint with seid %d found", local_seid); 672 return AVDTP_SEID_DOES_NOT_EXIST; 673 } 674 675 if (stream_endpoint->state < AVDTP_STREAM_ENDPOINT_CONFIGURED) return AVDTP_STREAM_ENDPOINT_IN_WRONG_STATE; 676 if (stream_endpoint->remote_sep_index == AVDTP_INVALID_SEP_INDEX) return AVDTP_SEID_DOES_NOT_EXIST; 677 678 connection->initiator_transaction_label++; 679 connection->remote_seid = remote_seid; 680 connection->local_seid = local_seid; 681 stream_endpoint->initiator_config_state = AVDTP_INITIATOR_W2_OPEN_STREAM; 682 stream_endpoint->state = AVDTP_STREAM_ENDPOINT_W2_REQUEST_OPEN_STREAM; 683 avdtp_request_can_send_now_initiator(connection, connection->l2cap_signaling_cid); 684 return ERROR_CODE_SUCCESS; 685 } 686 687 uint8_t avdtp_start_stream(uint16_t avdtp_cid, uint8_t local_seid, avdtp_context_t * context){ 688 avdtp_connection_t * connection = avdtp_connection_for_avdtp_cid(avdtp_cid, context); 689 if (!connection){ 690 log_error("avdtp_start_stream: no connection for signaling cid 0x%02x found", avdtp_cid); 691 return AVDTP_CONNECTION_DOES_NOT_EXIST; 692 } 693 694 avdtp_stream_endpoint_t * stream_endpoint = avdtp_stream_endpoint_with_seid(local_seid, context); 695 if (!stream_endpoint) { 696 log_error("avdtp_start_stream: no stream_endpoint with seid %d found", local_seid); 697 return AVDTP_SEID_DOES_NOT_EXIST; 698 } 699 700 if (stream_endpoint->l2cap_media_cid == 0){ 701 log_error("avdtp_start_stream: no media connection for stream_endpoint with seid %d found", local_seid); 702 return AVDTP_MEDIA_CONNECTION_DOES_NOT_EXIST; 703 } 704 705 if (stream_endpoint->remote_sep_index == AVDTP_INVALID_SEP_INDEX || stream_endpoint->start_stream){ 706 return AVDTP_STREAM_ENDPOINT_IN_WRONG_STATE; 707 } 708 709 stream_endpoint->start_stream = 1; 710 connection->local_seid = local_seid; 711 avdtp_request_can_send_now_initiator(connection, connection->l2cap_signaling_cid); 712 return ERROR_CODE_SUCCESS; 713 } 714 715 uint8_t avdtp_stop_stream(uint16_t avdtp_cid, uint8_t local_seid, avdtp_context_t * context){ 716 avdtp_connection_t * connection = avdtp_connection_for_avdtp_cid(avdtp_cid, context); 717 if (!connection){ 718 log_error("avdtp_stop_stream: no connection for signaling cid 0x%02x found", avdtp_cid); 719 return AVDTP_CONNECTION_DOES_NOT_EXIST; 720 } 721 722 avdtp_stream_endpoint_t * stream_endpoint = avdtp_stream_endpoint_with_seid(local_seid, context); 723 if (!stream_endpoint) { 724 log_error("avdtp_stop_stream: no stream_endpoint with seid %d found", local_seid); 725 return AVDTP_SEID_DOES_NOT_EXIST; 726 } 727 728 if (stream_endpoint->l2cap_media_cid == 0){ 729 log_error("avdtp_stop_stream: no media connection for stream_endpoint with seid %d found", local_seid); 730 return AVDTP_MEDIA_CONNECTION_DOES_NOT_EXIST; 731 } 732 if (stream_endpoint->remote_sep_index == 0xFF || stream_endpoint->stop_stream) return ERROR_CODE_SUCCESS; 733 734 stream_endpoint->stop_stream = 1; 735 connection->local_seid = local_seid; 736 avdtp_request_can_send_now_initiator(connection, connection->l2cap_signaling_cid); 737 return ERROR_CODE_SUCCESS; 738 } 739 740 uint8_t avdtp_abort_stream(uint16_t avdtp_cid, uint8_t local_seid, avdtp_context_t * context){ 741 avdtp_connection_t * connection = avdtp_connection_for_avdtp_cid(avdtp_cid, context); 742 if (!connection){ 743 log_error("avdtp_abort_stream: no connection for signaling cid 0x%02x found", avdtp_cid); 744 return AVDTP_CONNECTION_DOES_NOT_EXIST; 745 } 746 747 avdtp_stream_endpoint_t * stream_endpoint = avdtp_stream_endpoint_with_seid(local_seid, context); 748 if (!stream_endpoint) { 749 log_error("avdtp_abort_stream: no stream_endpoint with seid %d found", local_seid); 750 return AVDTP_SEID_DOES_NOT_EXIST; 751 } 752 753 if (stream_endpoint->l2cap_media_cid == 0){ 754 log_error("avdtp_abort_stream: no media connection for stream_endpoint with seid %d found", local_seid); 755 return AVDTP_MEDIA_CONNECTION_DOES_NOT_EXIST; 756 } 757 if (stream_endpoint->remote_sep_index == 0xFF || stream_endpoint->abort_stream) return ERROR_CODE_SUCCESS; 758 759 stream_endpoint->abort_stream = 1; 760 connection->local_seid = local_seid; 761 avdtp_request_can_send_now_initiator(connection, connection->l2cap_signaling_cid); 762 return ERROR_CODE_SUCCESS; 763 } 764 765 uint8_t avdtp_suspend_stream(uint16_t avdtp_cid, uint8_t local_seid, avdtp_context_t * context){ 766 avdtp_connection_t * connection = avdtp_connection_for_avdtp_cid(avdtp_cid, context); 767 if (!connection){ 768 log_error("avdtp_suspend_stream: no connection for signaling cid 0x%02x found", avdtp_cid); 769 return AVDTP_CONNECTION_DOES_NOT_EXIST; 770 } 771 772 avdtp_stream_endpoint_t * stream_endpoint = avdtp_stream_endpoint_with_seid(local_seid, context); 773 if (!stream_endpoint) { 774 log_error("avdtp_suspend_stream: no stream_endpoint with seid %d found", local_seid); 775 return AVDTP_SEID_DOES_NOT_EXIST; 776 } 777 778 if (stream_endpoint->l2cap_media_cid == 0){ 779 log_error("avdtp_suspend_stream: no media connection for stream_endpoint with seid %d found", local_seid); 780 return AVDTP_MEDIA_CONNECTION_DOES_NOT_EXIST; 781 } 782 if (stream_endpoint->remote_sep_index == 0xFF || stream_endpoint->suspend_stream) return ERROR_CODE_SUCCESS; 783 784 stream_endpoint->suspend_stream = 1; 785 connection->local_seid = local_seid; 786 avdtp_request_can_send_now_initiator(connection, connection->l2cap_signaling_cid); 787 return ERROR_CODE_SUCCESS; 788 } 789 790 void avdtp_discover_stream_endpoints(uint16_t avdtp_cid, avdtp_context_t * context){ 791 avdtp_connection_t * connection = avdtp_connection_for_avdtp_cid(avdtp_cid, context); 792 if (!connection){ 793 log_error("avdtp_discover_stream_endpoints: no connection for signaling cid 0x%02x found", avdtp_cid); 794 return; 795 } 796 if (connection->state != AVDTP_SIGNALING_CONNECTION_OPENED) return; 797 798 switch (connection->initiator_connection_state){ 799 case AVDTP_SIGNALING_CONNECTION_INITIATOR_IDLE: 800 connection->initiator_transaction_label++; 801 connection->initiator_connection_state = AVDTP_SIGNALING_CONNECTION_INITIATOR_W2_DISCOVER_SEPS; 802 avdtp_request_can_send_now_initiator(connection, connection->l2cap_signaling_cid); 803 break; 804 default: 805 log_error("avdtp_discover_stream_endpoints: wrong state"); 806 break; 807 } 808 } 809 810 811 void avdtp_get_capabilities(uint16_t avdtp_cid, uint8_t remote_seid, avdtp_context_t * context){ 812 avdtp_connection_t * connection = avdtp_connection_for_avdtp_cid(avdtp_cid, context); 813 if (!connection){ 814 log_error("avdtp_get_capabilities: no connection for AVDTP cid 0x%02x found", avdtp_cid); 815 return; 816 } 817 if (connection->state != AVDTP_SIGNALING_CONNECTION_OPENED) return; 818 if (connection->initiator_connection_state != AVDTP_SIGNALING_CONNECTION_INITIATOR_IDLE) return; 819 connection->initiator_transaction_label++; 820 connection->initiator_connection_state = AVDTP_SIGNALING_CONNECTION_INITIATOR_W2_GET_CAPABILITIES; 821 connection->remote_seid = remote_seid; 822 avdtp_request_can_send_now_initiator(connection, connection->l2cap_signaling_cid); 823 } 824 825 826 void avdtp_get_all_capabilities(uint16_t avdtp_cid, uint8_t remote_seid, avdtp_context_t * context){ 827 avdtp_connection_t * connection = avdtp_connection_for_avdtp_cid(avdtp_cid, context); 828 if (!connection){ 829 log_error("avdtp_get_all_capabilities: no connection for AVDTP cid 0x%02x found", avdtp_cid); 830 return; 831 } 832 if (connection->state != AVDTP_SIGNALING_CONNECTION_OPENED) return; 833 if (connection->initiator_connection_state != AVDTP_SIGNALING_CONNECTION_INITIATOR_IDLE) return; 834 connection->initiator_transaction_label++; 835 connection->initiator_connection_state = AVDTP_SIGNALING_CONNECTION_INITIATOR_W2_GET_ALL_CAPABILITIES; 836 connection->remote_seid = remote_seid; 837 avdtp_request_can_send_now_initiator(connection, connection->l2cap_signaling_cid); 838 } 839 840 void avdtp_get_configuration(uint16_t avdtp_cid, uint8_t remote_seid, avdtp_context_t * context){ 841 avdtp_connection_t * connection = avdtp_connection_for_avdtp_cid(avdtp_cid, context); 842 if (!connection){ 843 log_error("avdtp_get_configuration: no connection for AVDTP cid 0x%02x found", avdtp_cid); 844 return; 845 } 846 if (connection->state != AVDTP_SIGNALING_CONNECTION_OPENED) return; 847 if (connection->initiator_connection_state != AVDTP_SIGNALING_CONNECTION_INITIATOR_IDLE) return; 848 connection->initiator_transaction_label++; 849 connection->initiator_connection_state = AVDTP_SIGNALING_CONNECTION_INITIATOR_W2_GET_CONFIGURATION; 850 connection->remote_seid = remote_seid; 851 avdtp_request_can_send_now_initiator(connection, connection->l2cap_signaling_cid); 852 } 853 854 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){ 855 avdtp_connection_t * connection = avdtp_connection_for_avdtp_cid(avdtp_cid, context); 856 if (!connection){ 857 log_error("avdtp_set_configuration: no connection for AVDTP cid 0x%02x found", avdtp_cid); 858 return; 859 } 860 if (connection->state != AVDTP_SIGNALING_CONNECTION_OPENED) return; 861 if (connection->initiator_connection_state != AVDTP_SIGNALING_CONNECTION_INITIATOR_IDLE) return; 862 863 avdtp_stream_endpoint_t * stream_endpoint = avdtp_stream_endpoint_for_seid(local_seid, context); 864 if (!stream_endpoint) { 865 log_error("avdtp_set_configuration: no initiator stream endpoint for seid %d", local_seid); 866 return; 867 } 868 869 connection->initiator_transaction_label++; 870 connection->remote_seid = remote_seid; 871 connection->local_seid = local_seid; 872 stream_endpoint->remote_configuration_bitmap = configured_services_bitmap; 873 stream_endpoint->remote_configuration = configuration; 874 stream_endpoint->initiator_config_state = AVDTP_INITIATOR_W2_SET_CONFIGURATION; 875 avdtp_request_can_send_now_initiator(connection, connection->l2cap_signaling_cid); 876 } 877 878 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){ 879 avdtp_connection_t * connection = avdtp_connection_for_avdtp_cid(avdtp_cid, context); 880 if (!connection){ 881 log_error("avdtp_reconfigure: no connection for AVDTP cid 0x%02x found", avdtp_cid); 882 return; 883 } 884 //TODO: if opened only app capabilities, enable reconfigure for not opened 885 if (connection->state < AVDTP_SIGNALING_CONNECTION_OPENED) return; 886 if (connection->initiator_connection_state != AVDTP_SIGNALING_CONNECTION_INITIATOR_IDLE) return; 887 888 avdtp_stream_endpoint_t * stream_endpoint = avdtp_stream_endpoint_for_seid(local_seid, context); 889 if (!stream_endpoint) { 890 log_error("avdtp_reconfigure: no initiator stream endpoint for seid %d", local_seid); 891 return; 892 } 893 894 if (stream_endpoint->remote_sep_index == 0xFF){ 895 log_error("avdtp_reconfigure: no associated remote sep"); 896 return; 897 } 898 899 connection->initiator_transaction_label++; 900 connection->remote_seid = remote_seid; 901 connection->local_seid = local_seid; 902 stream_endpoint->remote_configuration_bitmap = configured_services_bitmap; 903 stream_endpoint->remote_configuration = configuration; 904 stream_endpoint->initiator_config_state = AVDTP_INITIATOR_W2_RECONFIGURE_STREAM_WITH_SEID; 905 printf("AVDTP_INITIATOR_W2_RECONFIGURE_STREAM_WITH_SEID \n"); 906 avdtp_request_can_send_now_initiator(connection, connection->l2cap_signaling_cid); 907 } 908 909 uint8_t avdtp_remote_seps_num(uint16_t avdtp_cid, avdtp_context_t * context){ 910 avdtp_connection_t * connection = avdtp_connection_for_avdtp_cid(avdtp_cid, context); 911 if (!connection){ 912 log_error("avdtp_suspend: no connection for AVDTP cid 0x%02x found", avdtp_cid); 913 return 0; 914 } 915 return connection->remote_seps_num; 916 } 917 918 avdtp_sep_t * avdtp_remote_sep(uint16_t avdtp_cid, uint8_t index, avdtp_context_t * context){ 919 avdtp_connection_t * connection = avdtp_connection_for_avdtp_cid(avdtp_cid, context); 920 if (!connection){ 921 log_error("avdtp_suspend: no connection for AVDTP cid 0x%02x found", avdtp_cid); 922 return NULL; 923 } 924 return &connection->remote_seps[index]; 925 } 926 927 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){ 928 UNUSED(packet_size); 929 if (storage_size < 4) { 930 log_error("storage must have 4 bytes"); 931 return; 932 } 933 uint8_t sampling_frequency = avdtp_choose_sbc_sampling_frequency(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_sampling_frequency_bitmap(packet)); 934 uint8_t channel_mode = avdtp_choose_sbc_channel_mode(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_channel_mode_bitmap(packet)); 935 uint8_t block_length = avdtp_choose_sbc_block_length(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_block_length_bitmap(packet)); 936 uint8_t subbands = avdtp_choose_sbc_subbands(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_subbands_bitmap(packet)); 937 938 uint8_t allocation_method = avdtp_choose_sbc_allocation_method(stream_endpoint, avdtp_subevent_signaling_media_codec_sbc_capability_get_allocation_method_bitmap(packet)); 939 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)); 940 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)); 941 942 config_storage[0] = (sampling_frequency << 4) | channel_mode; 943 config_storage[1] = (block_length << 4) | (subbands << 2) | allocation_method; 944 config_storage[2] = min_bitpool_value; 945 config_storage[3] = max_bitpool_value; 946 947 stream_endpoint->remote_configuration_bitmap = store_bit16(stream_endpoint->remote_configuration_bitmap, AVDTP_MEDIA_CODEC, 1); 948 stream_endpoint->remote_configuration.media_codec.media_type = AVDTP_AUDIO; 949 stream_endpoint->remote_configuration.media_codec.media_codec_type = AVDTP_CODEC_SBC; 950 stream_endpoint->remote_configuration.media_codec.media_codec_information_len = storage_size; 951 stream_endpoint->remote_configuration.media_codec.media_codec_information = config_storage; 952 } 953 954 uint8_t avdtp_choose_sbc_channel_mode(avdtp_stream_endpoint_t * stream_endpoint, uint8_t remote_channel_mode_bitmap){ 955 uint8_t * media_codec = stream_endpoint->sep.capabilities.media_codec.media_codec_information; 956 uint8_t channel_mode_bitmap = (media_codec[0] & 0x0F) & remote_channel_mode_bitmap; 957 958 uint8_t channel_mode = AVDTP_SBC_STEREO; 959 if (channel_mode_bitmap & AVDTP_SBC_JOINT_STEREO){ 960 channel_mode = AVDTP_SBC_JOINT_STEREO; 961 } else if (channel_mode_bitmap & AVDTP_SBC_STEREO){ 962 channel_mode = AVDTP_SBC_STEREO; 963 } else if (channel_mode_bitmap & AVDTP_SBC_DUAL_CHANNEL){ 964 channel_mode = AVDTP_SBC_DUAL_CHANNEL; 965 } else if (channel_mode_bitmap & AVDTP_SBC_MONO){ 966 channel_mode = AVDTP_SBC_MONO; 967 } 968 return channel_mode; 969 } 970 971 uint8_t avdtp_choose_sbc_allocation_method(avdtp_stream_endpoint_t * stream_endpoint, uint8_t remote_allocation_method_bitmap){ 972 uint8_t * media_codec = stream_endpoint->sep.capabilities.media_codec.media_codec_information; 973 uint8_t allocation_method_bitmap = (media_codec[1] & 0x03) & remote_allocation_method_bitmap; 974 975 uint8_t allocation_method = AVDTP_SBC_ALLOCATION_METHOD_LOUDNESS; 976 if (allocation_method_bitmap & AVDTP_SBC_ALLOCATION_METHOD_LOUDNESS){ 977 allocation_method = AVDTP_SBC_ALLOCATION_METHOD_LOUDNESS; 978 } else if (allocation_method_bitmap & AVDTP_SBC_ALLOCATION_METHOD_SNR){ 979 allocation_method = AVDTP_SBC_ALLOCATION_METHOD_SNR; 980 } 981 return allocation_method; 982 } 983 984 uint8_t avdtp_stream_endpoint_seid(avdtp_stream_endpoint_t * stream_endpoint){ 985 if (!stream_endpoint) return 0; 986 return stream_endpoint->sep.seid; 987 } 988 uint8_t avdtp_choose_sbc_subbands(avdtp_stream_endpoint_t * stream_endpoint, uint8_t remote_subbands_bitmap){ 989 uint8_t * media_codec = stream_endpoint->sep.capabilities.media_codec.media_codec_information; 990 uint8_t subbands_bitmap = ((media_codec[1] >> 2) & 0x03) & remote_subbands_bitmap; 991 992 uint8_t subbands = AVDTP_SBC_SUBBANDS_8; 993 if (subbands_bitmap & AVDTP_SBC_SUBBANDS_8){ 994 subbands = AVDTP_SBC_SUBBANDS_8; 995 } else if (subbands_bitmap & AVDTP_SBC_SUBBANDS_4){ 996 subbands = AVDTP_SBC_SUBBANDS_4; 997 } 998 return subbands; 999 } 1000 1001 uint8_t avdtp_choose_sbc_block_length(avdtp_stream_endpoint_t * stream_endpoint, uint8_t remote_block_length_bitmap){ 1002 uint8_t * media_codec = stream_endpoint->sep.capabilities.media_codec.media_codec_information; 1003 uint8_t block_length_bitmap = (media_codec[1] >> 4) & remote_block_length_bitmap; 1004 1005 uint8_t block_length = AVDTP_SBC_BLOCK_LENGTH_16; 1006 if (block_length_bitmap & AVDTP_SBC_BLOCK_LENGTH_16){ 1007 block_length = AVDTP_SBC_BLOCK_LENGTH_16; 1008 } else if (block_length_bitmap & AVDTP_SBC_BLOCK_LENGTH_12){ 1009 block_length = AVDTP_SBC_BLOCK_LENGTH_12; 1010 } else if (block_length_bitmap & AVDTP_SBC_BLOCK_LENGTH_8){ 1011 block_length = AVDTP_SBC_BLOCK_LENGTH_8; 1012 } else if (block_length_bitmap & AVDTP_SBC_BLOCK_LENGTH_4){ 1013 block_length = AVDTP_SBC_BLOCK_LENGTH_4; 1014 } 1015 return block_length; 1016 } 1017 1018 uint8_t avdtp_choose_sbc_sampling_frequency(avdtp_stream_endpoint_t * stream_endpoint, uint8_t remote_sampling_frequency_bitmap){ 1019 uint8_t * media_codec = stream_endpoint->sep.capabilities.media_codec.media_codec_information; 1020 uint8_t sampling_frequency_bitmap = (media_codec[0] >> 4) & remote_sampling_frequency_bitmap; 1021 1022 uint8_t sampling_frequency = AVDTP_SBC_44100; 1023 if (sampling_frequency_bitmap & AVDTP_SBC_48000){ 1024 sampling_frequency = AVDTP_SBC_48000; 1025 } else if (sampling_frequency_bitmap & AVDTP_SBC_44100){ 1026 sampling_frequency = AVDTP_SBC_44100; 1027 } else if (sampling_frequency_bitmap & AVDTP_SBC_32000){ 1028 sampling_frequency = AVDTP_SBC_32000; 1029 } else if (sampling_frequency_bitmap & AVDTP_SBC_16000){ 1030 sampling_frequency = AVDTP_SBC_16000; 1031 } 1032 return sampling_frequency; 1033 } 1034 1035 uint8_t avdtp_choose_sbc_max_bitpool_value(avdtp_stream_endpoint_t * stream_endpoint, uint8_t remote_max_bitpool_value){ 1036 uint8_t * media_codec = stream_endpoint->sep.capabilities.media_codec.media_codec_information; 1037 return btstack_min(media_codec[3], remote_max_bitpool_value); 1038 } 1039 1040 uint8_t avdtp_choose_sbc_min_bitpool_value(avdtp_stream_endpoint_t * stream_endpoint, uint8_t remote_min_bitpool_value){ 1041 uint8_t * media_codec = stream_endpoint->sep.capabilities.media_codec.media_codec_information; 1042 return btstack_max(media_codec[2], remote_min_bitpool_value); 1043 } 1044