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 /* 39 * avdtp.h 40 * 41 * Audio/Video Distribution Transport Protocol 42 * 43 * This protocol defines A/V stream negotiation, establishment, and transmission 44 * procedures. Also specified are the message formats that are exchanged between 45 * such devices to transport their A/V streams in A/V distribution applications. 46 * 47 * Media packets are unidirectional, they travel downstream from AVDTP Source to AVDTP Sink. 48 */ 49 50 #ifndef __AVDTP_H 51 #define __AVDTP_H 52 53 #include <stdint.h> 54 #include "hci.h" 55 #include "btstack_ring_buffer.h" 56 57 #if defined __cplusplus 58 extern "C" { 59 #endif 60 61 #define MAX_NUM_SEPS 10 62 #define MAX_CSRC_NUM 15 63 64 // Supported Features 65 #define AVDTP_SOURCE_SF_Player 0x0001 66 #define AVDTP_SOURCE_SF_Microphone 0x0002 67 #define AVDTP_SOURCE_SF_Tuner 0x0004 68 #define AVDTP_SOURCE_SF_Mixer 0x0008 69 70 #define AVDTP_SINK_SF_Headphone 0x0001 71 #define AVDTP_SINK_SF_Speaker 0x0002 72 #define AVDTP_SINK_SF_Recorder 0x0004 73 #define AVDTP_SINK_SF_Amplifier 0x0008 74 75 // ACP to INT, Signal Response Header Error Codes 76 #define BAD_HEADER_FORMAT 0x01 77 78 // ACP to INT, Signal Response Payload Format Error Codes 79 #define BAD_LENGTH 0x11 80 #define BAD_ACP_SEID 0x12 81 #define SEP_IN_USE 0x13 82 #define SEP_NOT_IN_USE 0x14 83 #define BAD_SERV_CATEGORY 0x17 84 #define BAD_PAYLOAD_FORMAT 0x18 85 #define NOT_SUPPORTED_COMMAND 0x19 86 #define INVALID_CAPABILITIES 0x1A 87 88 // ACP to INT, Signal Response Transport Service Capabilities Error Codes 89 #define BAD_RECOVERY_TYPE 0x22 90 #define BAD_MEDIA_TRANSPORT_FORMAT 0x23 91 #define BAD_RECOVERY_FORMAT 0x25 92 #define BAD_ROHC_FORMAT 0x26 93 #define BAD_CP_FORMAT 0x27 94 #define BAD_MULTIPLEXING_FORMAT 0x28 95 #define UNSUPPORTED_CONFIGURATION 0x29 96 97 // ACP to INT, Procedure Error Codes 98 #define BAD_STATE 0x31 99 // Signal Identifier fields 100 typedef enum { 101 AVDTP_SI_NONE = 0x00, 102 AVDTP_SI_DISCOVER = 0x01, 103 AVDTP_SI_GET_CAPABILITIES, 104 AVDTP_SI_SET_CONFIGURATION, 105 AVDTP_SI_GET_CONFIGURATION, 106 AVDTP_SI_RECONFIGURE, //5 107 AVDTP_SI_OPEN, //6 108 AVDTP_SI_START, //7 109 AVDTP_SI_CLOSE, 110 AVDTP_SI_SUSPEND, 111 AVDTP_SI_ABORT, //10 112 AVDTP_SI_SECURITY_CONTROL, 113 AVDTP_SI_GET_ALL_CAPABILITIES, //12 114 AVDTP_SI_DELAYREPORT 115 } avdtp_signal_identifier_t; 116 117 typedef enum { 118 AVDTP_SINGLE_PACKET= 0, 119 AVDTP_START_PACKET , 120 AVDTP_CONTINUE_PACKET , 121 AVDTP_END_PACKET 122 } avdtp_packet_type_t; 123 124 typedef enum { 125 AVDTP_CMD_MSG = 0, 126 AVDTP_GENERAL_REJECT_MSG , 127 AVDTP_RESPONSE_ACCEPT_MSG , 128 AVDTP_RESPONSE_REJECT_MSG 129 } avdtp_message_type_t; 130 131 typedef enum{ 132 AVDTP_AUDIO = 0, 133 AVDTP_VIDEO, 134 AVDTP_MULTIMEDIA 135 } avdtp_media_type_t; 136 137 typedef enum{ 138 AVDTP_CODEC_SBC = 0x00, 139 AVDTP_CODEC_MPEG_1_2_AUDIO = 0x01, 140 AVDTP_CODEC_MPEG_2_4_AAC = 0x02, 141 AVDTP_CODEC_ATRAC_FAMILY = 0x04, 142 AVDTP_CODEC_NON_A2DP = 0xFF 143 } avdtp_media_codec_type_t; 144 145 typedef enum{ 146 AVDTP_CONTENT_PROTECTION_DTCP = 0x0001, 147 AVDTP_CONTENT_PROTECTION_SCMS_T = 0x0002 148 } avdtp_content_protection_type_t; 149 150 typedef enum{ 151 AVDTP_SOURCE = 0, 152 AVDTP_SINK 153 } avdtp_sep_type_t; 154 155 typedef enum { 156 AVDTP_SERVICE_CATEGORY_INVALID_0 = 0x00, 157 AVDTP_MEDIA_TRANSPORT = 0X01, 158 AVDTP_REPORTING, 159 AVDTP_RECOVERY, 160 AVDTP_CONTENT_PROTECTION, //4 161 AVDTP_HEADER_COMPRESSION, //5 162 AVDTP_MULTIPLEXING, //6 163 AVDTP_MEDIA_CODEC, //7 164 AVDTP_DELAY_REPORTING, //8 165 AVDTP_SERVICE_CATEGORY_INVALID_FF = 0xFF 166 } avdtp_service_category_t; 167 168 typedef struct { 169 uint8_t recovery_type; // 0x01 = RFC2733 170 uint8_t maximum_recovery_window_size; // 0x01 to 0x18, for a Transport Packet 171 uint8_t maximum_number_media_packets; // 0x01 to 0x18, The maximum number of media packets a specific parity code covers 172 } avdtp_recovery_capabilities_t; 173 174 typedef struct { 175 avdtp_media_type_t media_type; 176 avdtp_media_codec_type_t media_codec_type; 177 uint16_t media_codec_information_len; 178 uint8_t * media_codec_information; 179 } adtvp_media_codec_capabilities_t; 180 181 182 typedef struct { 183 uint16_t cp_type; 184 uint16_t cp_type_value_len; 185 const uint8_t * cp_type_value; 186 } adtvp_content_protection_t; 187 188 typedef struct{ 189 uint8_t back_ch; // byte0 - bit 8; 0=Not Available/Not Used; 1=Available/In Use 190 uint8_t media; // byte0 - bit 7 191 uint8_t recovery; // byte0 - bit 6 192 } avdtp_header_compression_capabilities_t; 193 194 typedef struct{ 195 uint8_t fragmentation; // byte0 - bit 8, Allow Adaptation Layer Fragmentation, 0 no, 1 yes 196 // Request/indicate value of the Transport Session Identifier for a media, reporting, or recovery transport sessions, respectively 197 uint8_t transport_identifiers_num; 198 uint8_t transport_session_identifiers[3]; // byte1, upper 5bits, 0x01 to 0x1E 199 // Request/indicate value for TCID for a media, reporting, or transport session 200 uint8_t tcid[3]; // byte2 0x01 to 0x1E 201 } avdtp_multiplexing_mode_capabilities_t; 202 203 typedef struct{ 204 avdtp_recovery_capabilities_t recovery; 205 adtvp_media_codec_capabilities_t media_codec; 206 adtvp_content_protection_t content_protection; 207 avdtp_header_compression_capabilities_t header_compression; 208 avdtp_multiplexing_mode_capabilities_t multiplexing_mode; 209 } avdtp_capabilities_t; 210 211 typedef enum{ 212 AVDTP_SBC_48000 = 1, 213 AVDTP_SBC_44100 = 2, 214 AVDTP_SBC_32000 = 4, 215 AVDTP_SBC_16000 = 8 216 } avdtp_sbc_sampling_frequency_t; 217 218 typedef enum{ 219 AVDTP_SBC_JOINT_STEREO = 1, 220 AVDTP_SBC_STEREO = 2, 221 AVDTP_SBC_DUAL_CHANNEL = 4, 222 AVDTP_SBC_MONO = 8 223 } avdtp_sbc_channel_mode_t; 224 225 typedef enum{ 226 AVDTP_SBC_BLOCK_LENGTH_16 = 1, 227 AVDTP_SBC_BLOCK_LENGTH_12 = 2, 228 AVDTP_SBC_BLOCK_LENGTH_8 = 4, 229 AVDTP_SBC_BLOCK_LENGTH_4 = 8 230 } avdtp_sbc_block_length_t; 231 232 typedef enum{ 233 AVDTP_SBC_SUBBANDS_8 = 1, 234 AVDTP_SBC_SUBBANDS_4 = 2 235 } avdtp_sbc_subbands_t; 236 237 typedef enum{ 238 AVDTP_SBC_ALLOCATION_METHOD_LOUDNESS = 1, 239 AVDTP_SBC_ALLOCATION_METHOD_SNR = 2 240 } avdtp_sbc_allocation_method_t; 241 242 typedef struct { 243 uint8_t fragmentation; 244 uint8_t starting_packet; // of fragmented SBC frame 245 uint8_t last_packet; // of fragmented SBC frame 246 uint8_t num_frames; 247 } avdtp_sbc_codec_header_t; 248 249 // typedef struct { 250 // uint8_t transaction_label; 251 // avdtp_packet_type_t packet_type; 252 // avdtp_message_type_t message_type; 253 // uint8_t signal_identifier; 254 // } avdtp_signaling_packet_header_t; 255 256 typedef struct { 257 uint8_t version; 258 uint8_t padding; 259 uint8_t extension; 260 uint8_t csrc_count; 261 uint8_t marker; 262 uint8_t payload_type; 263 264 uint16_t sequence_number; 265 uint32_t timestamp; 266 uint32_t synchronization_source; 267 268 uint32_t csrc_list[MAX_CSRC_NUM]; 269 } avdtp_media_packet_header_t; 270 271 typedef enum { 272 AVDTP_BASIC_SERVICE_MODE, 273 AVDTP_MULTIPLEXING_SERVICE_MODE 274 } avdtp_service_mode_t; 275 276 typedef enum { 277 AVDTP_STREAM_ENDPOINT_IDLE, 278 AVDTP_STREAM_ENDPOINT_CONFIGURATION_SUBSTATEMACHINE, 279 AVDTP_STREAM_ENDPOINT_CONFIGURED, 280 281 AVDTP_STREAM_ENDPOINT_W2_REQUEST_OPEN_STREAM, 282 AVDTP_STREAM_ENDPOINT_W4_L2CAP_FOR_MEDIA_CONNECTED, 283 284 AVDTP_STREAM_ENDPOINT_OPENED, 285 AVDTP_STREAM_ENDPOINT_STREAMING, 286 287 AVDTP_STREAM_ENDPOINT_CLOSING, 288 AVDTP_STREAM_ENDPOINT_ABORTING, 289 AVDTP_STREAM_ENDPOINT_W4_L2CAP_FOR_MEDIA_DISCONNECTED 290 } avdtp_stream_endpoint_state_t; 291 292 typedef enum { 293 AVDTP_INITIATOR_STREAM_CONFIG_IDLE, 294 AVDTP_INITIATOR_W2_SET_CONFIGURATION, 295 AVDTP_INITIATOR_W2_SUSPEND_STREAM_WITH_SEID, 296 AVDTP_INITIATOR_W2_RECONFIGURE_STREAM_WITH_SEID, 297 298 AVDTP_INITIATOR_W2_OPEN_STREAM, 299 300 AVDTP_INITIATOR_W2_STREAMING_ABORT, 301 AVDTP_INITIATOR_FRAGMENTATED_COMMAND, 302 AVDTP_INITIATOR_W4_ANSWER 303 } avdtp_initiator_stream_endpoint_state_t; 304 305 typedef enum { 306 AVDTP_ACCEPTOR_STREAM_CONFIG_IDLE, 307 AVDTP_ACCEPTOR_W2_ANSWER_GET_CAPABILITIES, 308 AVDTP_ACCEPTOR_W2_ANSWER_GET_ALL_CAPABILITIES, 309 AVDTP_ACCEPTOR_W2_ANSWER_SET_CONFIGURATION, 310 AVDTP_ACCEPTOR_W2_ANSWER_RECONFIGURE, 311 AVDTP_ACCEPTOR_W2_ANSWER_GET_CONFIGURATION, 312 AVDTP_ACCEPTOR_W2_ANSWER_OPEN_STREAM, 313 AVDTP_ACCEPTOR_W2_ANSWER_START_STREAM, 314 AVDTP_ACCEPTOR_W2_ANSWER_CLOSE_STREAM, 315 AVDTP_ACCEPTOR_W2_ANSWER_ABORT_STREAM, 316 AVDTP_ACCEPTOR_W2_SUSPEND_STREAM_WITH_SEID, 317 AVDTP_ACCEPTOR_W2_ANSWER_SUSPEND_STREAM, 318 AVDTP_ACCEPTOR_W2_REJECT_WITH_ERROR_CODE, 319 AVDTP_ACCEPTOR_W2_REJECT_CATEGORY_WITH_ERROR_CODE, 320 AVDTP_ACCEPTOR_W2_REJECT_UNKNOWN_CMD, 321 AVDTP_ACCEPTOR_STREAMING 322 } avdtp_acceptor_stream_endpoint_state_t; 323 324 typedef struct { 325 uint8_t seid; // 0x01 – 0x3E, 6bit 326 uint8_t in_use; // 1 bit, 0 - not in use, 1 - in use 327 avdtp_media_type_t media_type; // 4 bit 328 avdtp_sep_type_t type; // 1 bit, 0 - SRC, 1 - SNK 329 330 uint16_t registered_service_categories; 331 avdtp_capabilities_t capabilities; 332 333 uint16_t configured_service_categories; 334 avdtp_capabilities_t configuration; 335 } avdtp_sep_t; 336 337 338 typedef enum { 339 AVDTP_SIGNALING_CONNECTION_IDLE, 340 AVDTP_SIGNALING_W4_SDP_QUERY_COMPLETE, 341 AVDTP_SIGNALING_CONNECTION_W4_L2CAP_CONNECTED, 342 AVDTP_SIGNALING_CONNECTION_OPENED, 343 AVDTP_SIGNALING_CONNECTION_W4_L2CAP_DISCONNECTED 344 } avdtp_connection_state_t; 345 346 typedef enum { 347 AVDTP_SIGNALING_CONNECTION_ACCEPTOR_IDLE, 348 AVDTP_SIGNALING_CONNECTION_ACCEPTOR_W2_ANSWER_DISCOVER_SEPS, 349 AVDTP_SIGNALING_CONNECTION_ACCEPTOR_W2_REJECT_WITH_ERROR_CODE, 350 AVDTP_SIGNALING_CONNECTION_ACCEPTOR_W2_REJECT_CATEGORY_WITH_ERROR_CODE, 351 AVDTP_SIGNALING_CONNECTION_ACCEPTOR_W2_GENERAL_REJECT_WITH_ERROR_CODE 352 } avdtp_acceptor_connection_state_t; 353 354 typedef enum { 355 AVDTP_SIGNALING_CONNECTION_INITIATOR_IDLE, 356 AVDTP_SIGNALING_CONNECTION_INITIATOR_W2_DISCOVER_SEPS, 357 AVDTP_SIGNALING_CONNECTION_INITIATOR_W2_GET_CAPABILITIES, 358 AVDTP_SIGNALING_CONNECTION_INITIATOR_W2_GET_ALL_CAPABILITIES, 359 AVDTP_SIGNALING_CONNECTION_INITIATOR_W2_GET_CONFIGURATION, 360 AVDTP_SIGNALING_CONNECTION_INITIATOR_W4_ANSWER 361 } avdtp_initiator_connection_state_t; 362 363 typedef struct { 364 uint8_t command[200]; 365 uint16_t size; 366 uint16_t offset; 367 uint8_t acp_seid; 368 uint8_t int_seid; 369 uint16_t transaction_label; 370 uint16_t num_packets; 371 avdtp_signal_identifier_t signal_identifier; 372 avdtp_message_type_t message_type; 373 avdtp_packet_type_t packet_type; 374 } avdtp_signaling_packet_t; 375 376 377 typedef struct { 378 btstack_linked_item_t item; 379 bd_addr_t remote_addr; 380 381 uint16_t avdtp_cid; 382 uint16_t l2cap_signaling_cid; 383 avdtp_service_mode_t service_mode; 384 385 avdtp_connection_state_t state; 386 avdtp_acceptor_connection_state_t acceptor_connection_state; 387 avdtp_initiator_connection_state_t initiator_connection_state; 388 389 // used for fragmentation 390 // avdtp_signaling_packet_header_t signaling_header; 391 avdtp_signaling_packet_t signaling_packet; 392 393 uint8_t disconnect; 394 395 uint8_t local_seid; 396 uint8_t remote_seid; 397 398 uint8_t initiator_transaction_label; 399 uint8_t acceptor_transaction_label; 400 uint8_t wait_to_send_acceptor; 401 uint8_t wait_to_send_initiator; 402 uint8_t wait_to_send_self; 403 404 uint8_t suspended_seids[MAX_NUM_SEPS]; 405 uint8_t num_suspended_seids; 406 407 uint8_t reject_service_category; 408 avdtp_signal_identifier_t reject_signal_identifier; 409 uint8_t error_code; 410 411 // store configurations with remote seps 412 avdtp_sep_t remote_seps[MAX_NUM_SEPS]; 413 uint8_t remote_seps_num; 414 415 // store current role 416 uint8_t is_initiator; 417 uint8_t is_configuration_initiated_locally; 418 btstack_timer_source_t configuration_timer; 419 } avdtp_connection_t; 420 421 typedef enum { 422 A2DP_IDLE, 423 A2DP_CONNECTED, 424 A2DP_W2_DISCOVER_SEPS, 425 A2DP_W2_GET_CAPABILITIES, 426 A2DP_W2_GET_ALL_CAPABILITIES, 427 A2DP_W2_SET_CONFIGURATION, //5 428 A2DP_W4_GET_CONFIGURATION, 429 A2DP_W4_SET_CONFIGURATION, 430 A2DP_W2_SUSPEND_STREAM_WITH_SEID, 431 A2DP_W2_RECONFIGURE_WITH_SEID, 432 A2DP_W2_OPEN_STREAM_WITH_SEID, //10 433 A2DP_W4_OPEN_STREAM_WITH_SEID, 434 A2DP_W2_START_STREAM_WITH_SEID, 435 A2DP_W2_ABORT_STREAM_WITH_SEID, 436 A2DP_W2_STOP_STREAM_WITH_SEID, 437 A2DP_STREAMING_OPENED 438 } a2dp_state_t; 439 440 typedef struct avdtp_stream_endpoint { 441 btstack_linked_item_t item; 442 443 // original capabilities 444 avdtp_sep_t sep; 445 hci_con_handle_t media_con_handle; 446 uint16_t l2cap_media_cid; 447 uint16_t l2cap_reporting_cid; 448 uint16_t l2cap_recovery_cid; 449 450 avdtp_stream_endpoint_state_t state; 451 avdtp_acceptor_stream_endpoint_state_t acceptor_config_state; 452 avdtp_initiator_stream_endpoint_state_t initiator_config_state; 453 a2dp_state_t a2dp_state; 454 // active connection 455 avdtp_connection_t * connection; 456 // currently active remote seid 457 uint8_t remote_sep_index; 458 avdtp_capabilities_t remote_capabilities; 459 uint16_t remote_capabilities_bitmap; 460 461 uint16_t remote_configuration_bitmap; 462 avdtp_capabilities_t remote_configuration; 463 464 // temporary SBC config 465 avdtp_media_codec_type_t media_codec_type; 466 avdtp_media_type_t media_type; 467 uint8_t media_codec_sbc_info[4]; 468 469 // register request for media L2cap connection release 470 uint8_t media_disconnect; 471 uint8_t media_connect; 472 uint8_t start_stream; 473 uint8_t stop_stream; 474 uint8_t send_stream; 475 uint8_t abort_stream; 476 uint8_t suspend_stream; 477 478 uint16_t sequence_number; 479 480 } avdtp_stream_endpoint_t; 481 482 typedef struct { 483 // to app 484 bd_addr_t remote_addr; 485 486 uint32_t fill_audio_ring_buffer_timeout_ms; 487 uint32_t time_audio_data_sent; // msstream 488 uint32_t acc_num_missed_samples; 489 uint32_t samples_ready; 490 btstack_timer_source_t fill_audio_ring_buffer_timer; 491 btstack_ring_buffer_t sbc_ring_buffer; 492 493 int reconfigure; 494 int num_channels; 495 int sampling_frequency; 496 int channel_mode; 497 int block_length; 498 int subbands; 499 int allocation_method; 500 int min_bitpool_value; 501 int max_bitpool_value; 502 avdtp_stream_endpoint_t * local_stream_endpoint; 503 avdtp_sep_t * active_remote_sep; 504 } avdtp_stream_endpoint_context_t; 505 506 typedef struct { 507 btstack_linked_list_t connections; 508 btstack_linked_list_t stream_endpoints; 509 uint16_t stream_endpoints_id_counter; 510 uint16_t initiator_transaction_id_counter; 511 btstack_packet_handler_t avdtp_callback; 512 btstack_packet_handler_t a2dp_callback; 513 void (*handle_media_data)(uint8_t local_seid, uint8_t *packet, uint16_t size); 514 btstack_packet_handler_t packet_handler; 515 516 avdtp_sep_type_t query_role; 517 518 // SDP query 519 uint16_t avdtp_cid; 520 uint16_t avdtp_l2cap_psm; 521 uint16_t avdtp_version; 522 uint8_t role_supported; 523 } avdtp_context_t; 524 525 void avdtp_register_media_transport_category(avdtp_stream_endpoint_t * stream_endpoint); 526 void avdtp_register_reporting_category(avdtp_stream_endpoint_t * stream_endpoint); 527 void avdtp_register_delay_reporting_category(avdtp_stream_endpoint_t * stream_endpoint); 528 void avdtp_register_recovery_category(avdtp_stream_endpoint_t * stream_endpoint, uint8_t maximum_recovery_window_size, uint8_t maximum_number_media_packets); 529 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); 530 void avdtp_register_header_compression_category(avdtp_stream_endpoint_t * stream_endpoint, uint8_t back_ch, uint8_t media, uint8_t recovery); 531 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); 532 void avdtp_register_multiplexing_category(avdtp_stream_endpoint_t * stream_endpoint, uint8_t fragmentation); 533 void avdtp_handle_can_send_now(avdtp_connection_t * connection, uint16_t l2cap_cid, avdtp_context_t * context); 534 535 void avdtp_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size, avdtp_context_t * context); 536 avdtp_connection_t * avdtp_create_connection(bd_addr_t remote_addr, avdtp_context_t * context); 537 avdtp_stream_endpoint_t * avdtp_create_stream_endpoint(avdtp_sep_type_t sep_type, avdtp_media_type_t media_type, avdtp_context_t * context); 538 539 uint8_t avdtp_connect(bd_addr_t remote, avdtp_sep_type_t query_role, avdtp_context_t * context, uint16_t * avdtp_cid); 540 uint8_t avdtp_disconnect(uint16_t avdtp_cid, avdtp_context_t * context); 541 uint8_t avdtp_open_stream(uint16_t avdtp_cid, uint8_t local_seid, uint8_t remote_seid, avdtp_context_t * context); 542 uint8_t avdtp_start_stream(uint16_t avdtp_cid, uint8_t local_seid, avdtp_context_t * context); 543 uint8_t avdtp_stop_stream (uint16_t avdtp_cid, uint8_t local_seid, avdtp_context_t * context); 544 uint8_t avdtp_abort_stream(uint16_t avdtp_cid, uint8_t local_seid, avdtp_context_t * context); 545 uint8_t avdtp_suspend_stream(uint16_t avdtp_cid, uint8_t local_seid, avdtp_context_t * context); 546 547 void avdtp_discover_stream_endpoints(uint16_t avdtp_cid, avdtp_context_t * context); 548 void avdtp_get_capabilities(uint16_t avdtp_cid, uint8_t remote_seid, avdtp_context_t * context); 549 void avdtp_get_all_capabilities(uint16_t avdtp_cid, uint8_t remote_seid, avdtp_context_t * context); 550 void avdtp_get_configuration(uint16_t avdtp_cid, uint8_t remote_seid, avdtp_context_t * context); 551 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); 552 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); 553 uint8_t avdtp_remote_seps_num(uint16_t avdtp_cid, avdtp_context_t * context); 554 avdtp_sep_t * avdtp_remote_sep(uint16_t avdtp_cid, uint8_t index, avdtp_context_t * context); 555 556 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); 557 uint8_t avdtp_choose_sbc_channel_mode(avdtp_stream_endpoint_t * stream_endpoint, uint8_t remote_channel_mode_bitmap); 558 uint8_t avdtp_choose_sbc_allocation_method(avdtp_stream_endpoint_t * stream_endpoint, uint8_t remote_allocation_method_bitmap); 559 560 uint8_t avdtp_choose_sbc_subbands(avdtp_stream_endpoint_t * stream_endpoint, uint8_t remote_subbands_bitmap); 561 uint8_t avdtp_choose_sbc_block_length(avdtp_stream_endpoint_t * stream_endpoint, uint8_t remote_block_length_bitmap); 562 uint8_t avdtp_choose_sbc_sampling_frequency(avdtp_stream_endpoint_t * stream_endpoint, uint8_t remote_sampling_frequency_bitmap); 563 uint8_t avdtp_choose_sbc_max_bitpool_value(avdtp_stream_endpoint_t * stream_endpoint, uint8_t remote_max_bitpool_value); 564 uint8_t avdtp_choose_sbc_min_bitpool_value(avdtp_stream_endpoint_t * stream_endpoint, uint8_t remote_min_bitpool_value); 565 566 uint8_t avdtp_stream_endpoint_seid(avdtp_stream_endpoint_t * stream_endpoint); 567 void avdtp_configuration_timeout_handler(btstack_timer_source_t * timer); 568 void avdtp_configuration_timer_start(avdtp_connection_t * connection); 569 void avdtp_configuration_timer_stop(avdtp_connection_t * connection); 570 571 #if defined __cplusplus 572 } 573 #endif 574 575 #endif // __AVDTP_H