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 AVDTP_MAX_NUM_SEPS 10 62 #define AVDTP_MAX_CSRC_NUM 15 63 #define AVDTP_MAX_CONTENT_PROTECTION_TYPE_VALUE_LEN 10 64 65 // Supported Features 66 #define AVDTP_SOURCE_SF_Player 0x0001 67 #define AVDTP_SOURCE_SF_Microphone 0x0002 68 #define AVDTP_SOURCE_SF_Tuner 0x0004 69 #define AVDTP_SOURCE_SF_Mixer 0x0008 70 71 #define AVDTP_SINK_SF_Headphone 0x0001 72 #define AVDTP_SINK_SF_Speaker 0x0002 73 #define AVDTP_SINK_SF_Recorder 0x0004 74 #define AVDTP_SINK_SF_Amplifier 0x0008 75 76 // ACP to INT, Signal Response Header Error Codes 77 #define BAD_HEADER_FORMAT 0x01 78 79 // ACP to INT, Signal Response Payload Format Error Codes 80 #define BAD_LENGTH 0x11 81 #define BAD_ACP_SEID 0x12 82 #define SEP_IN_USE 0x13 83 #define SEP_NOT_IN_USE 0x14 84 #define BAD_SERV_CATEGORY 0x17 85 #define BAD_PAYLOAD_FORMAT 0x18 86 #define NOT_SUPPORTED_COMMAND 0x19 87 #define INVALID_CAPABILITIES 0x1A 88 89 // ACP to INT, Signal Response Transport Service Capabilities Error Codes 90 #define BAD_RECOVERY_TYPE 0x22 91 #define BAD_MEDIA_TRANSPORT_FORMAT 0x23 92 #define BAD_RECOVERY_FORMAT 0x25 93 #define BAD_ROHC_FORMAT 0x26 94 #define BAD_CP_FORMAT 0x27 95 #define BAD_MULTIPLEXING_FORMAT 0x28 96 #define UNSUPPORTED_CONFIGURATION 0x29 97 98 // ACP to INT, Procedure Error Codes 99 #define BAD_STATE 0x31 100 // Signal Identifier fields 101 typedef enum { 102 AVDTP_SI_NONE = 0x00, 103 AVDTP_SI_DISCOVER = 0x01, 104 AVDTP_SI_GET_CAPABILITIES, 105 AVDTP_SI_SET_CONFIGURATION, 106 AVDTP_SI_GET_CONFIGURATION, 107 AVDTP_SI_RECONFIGURE, //5 108 AVDTP_SI_OPEN, //6 109 AVDTP_SI_START, //7 110 AVDTP_SI_CLOSE, 111 AVDTP_SI_SUSPEND, 112 AVDTP_SI_ABORT, //10 113 AVDTP_SI_SECURITY_CONTROL, 114 AVDTP_SI_GET_ALL_CAPABILITIES, //12 115 AVDTP_SI_DELAYREPORT 116 } avdtp_signal_identifier_t; 117 118 typedef enum { 119 AVDTP_SINGLE_PACKET= 0, 120 AVDTP_START_PACKET , 121 AVDTP_CONTINUE_PACKET , 122 AVDTP_END_PACKET 123 } avdtp_packet_type_t; 124 125 typedef enum { 126 AVDTP_CMD_MSG = 0, 127 AVDTP_GENERAL_REJECT_MSG , 128 AVDTP_RESPONSE_ACCEPT_MSG , 129 AVDTP_RESPONSE_REJECT_MSG 130 } avdtp_message_type_t; 131 132 typedef enum{ 133 AVDTP_AUDIO = 0, 134 AVDTP_VIDEO, 135 AVDTP_MULTIMEDIA 136 } avdtp_media_type_t; 137 138 typedef enum{ 139 AVDTP_CODEC_SBC = 0x00, 140 AVDTP_CODEC_MPEG_1_2_AUDIO = 0x01, 141 AVDTP_CODEC_MPEG_2_4_AAC = 0x02, 142 AVDTP_CODEC_ATRAC_FAMILY = 0x04, 143 AVDTP_CODEC_NON_A2DP = 0xFF 144 } avdtp_media_codec_type_t; 145 146 typedef enum{ 147 AVDTP_CONTENT_PROTECTION_DTCP = 0x0001, 148 AVDTP_CONTENT_PROTECTION_SCMS_T = 0x0002 149 } avdtp_content_protection_type_t; 150 151 typedef enum{ 152 AVDTP_SOURCE = 0, 153 AVDTP_SINK 154 } avdtp_sep_type_t; 155 156 typedef enum { 157 AVDTP_SERVICE_CATEGORY_INVALID_0 = 0x00, 158 AVDTP_MEDIA_TRANSPORT = 0X01, 159 AVDTP_REPORTING, 160 AVDTP_RECOVERY, 161 AVDTP_CONTENT_PROTECTION, //4 162 AVDTP_HEADER_COMPRESSION, //5 163 AVDTP_MULTIPLEXING, //6 164 AVDTP_MEDIA_CODEC, //7 165 AVDTP_DELAY_REPORTING, //8 166 AVDTP_SERVICE_CATEGORY_INVALID_FF = 0xFF 167 } avdtp_service_category_t; 168 169 typedef struct { 170 uint8_t recovery_type; // 0x01 = RFC2733 171 uint8_t maximum_recovery_window_size; // 0x01 to 0x18, for a Transport Packet 172 uint8_t maximum_number_media_packets; // 0x01 to 0x18, The maximum number of media packets a specific parity code covers 173 } avdtp_recovery_capabilities_t; 174 175 typedef struct { 176 avdtp_media_type_t media_type; 177 avdtp_media_codec_type_t media_codec_type; 178 uint16_t media_codec_information_len; 179 uint8_t * media_codec_information; 180 } adtvp_media_codec_capabilities_t; 181 182 183 typedef struct { 184 uint16_t cp_type; 185 uint16_t cp_type_value_len; 186 uint8_t cp_type_value[AVDTP_MAX_CONTENT_PROTECTION_TYPE_VALUE_LEN]; 187 } adtvp_content_protection_t; 188 189 typedef struct{ 190 uint8_t back_ch; // byte0 - bit 8; 0=Not Available/Not Used; 1=Available/In Use 191 uint8_t media; // byte0 - bit 7 192 uint8_t recovery; // byte0 - bit 6 193 } avdtp_header_compression_capabilities_t; 194 195 typedef struct{ 196 uint8_t fragmentation; // byte0 - bit 8, Allow Adaptation Layer Fragmentation, 0 no, 1 yes 197 // Request/indicate value of the Transport Session Identifier for a media, reporting, or recovery transport sessions, respectively 198 uint8_t transport_identifiers_num; 199 uint8_t transport_session_identifiers[3]; // byte1, upper 5bits, 0x01 to 0x1E 200 // Request/indicate value for TCID for a media, reporting, or transport session 201 uint8_t tcid[3]; // byte2 0x01 to 0x1E 202 } avdtp_multiplexing_mode_capabilities_t; 203 204 typedef struct{ 205 avdtp_recovery_capabilities_t recovery; 206 adtvp_media_codec_capabilities_t media_codec; 207 adtvp_content_protection_t content_protection; 208 avdtp_header_compression_capabilities_t header_compression; 209 avdtp_multiplexing_mode_capabilities_t multiplexing_mode; 210 } avdtp_capabilities_t; 211 212 typedef enum{ 213 AVDTP_SBC_48000 = 1, 214 AVDTP_SBC_44100 = 2, 215 AVDTP_SBC_32000 = 4, 216 AVDTP_SBC_16000 = 8 217 } avdtp_sbc_sampling_frequency_t; 218 219 typedef enum{ 220 AVDTP_SBC_JOINT_STEREO = 1, 221 AVDTP_SBC_STEREO = 2, 222 AVDTP_SBC_DUAL_CHANNEL = 4, 223 AVDTP_SBC_MONO = 8 224 } avdtp_sbc_channel_mode_t; 225 226 typedef enum{ 227 AVDTP_SBC_BLOCK_LENGTH_16 = 1, 228 AVDTP_SBC_BLOCK_LENGTH_12 = 2, 229 AVDTP_SBC_BLOCK_LENGTH_8 = 4, 230 AVDTP_SBC_BLOCK_LENGTH_4 = 8 231 } avdtp_sbc_block_length_t; 232 233 typedef enum{ 234 AVDTP_SBC_SUBBANDS_8 = 1, 235 AVDTP_SBC_SUBBANDS_4 = 2 236 } avdtp_sbc_subbands_t; 237 238 typedef enum{ 239 AVDTP_SBC_ALLOCATION_METHOD_LOUDNESS = 1, 240 AVDTP_SBC_ALLOCATION_METHOD_SNR = 2 241 } avdtp_sbc_allocation_method_t; 242 243 typedef struct { 244 uint8_t fragmentation; 245 uint8_t starting_packet; // of fragmented SBC frame 246 uint8_t last_packet; // of fragmented SBC frame 247 uint8_t num_frames; 248 } avdtp_sbc_codec_header_t; 249 250 // typedef struct { 251 // uint8_t transaction_label; 252 // avdtp_packet_type_t packet_type; 253 // avdtp_message_type_t message_type; 254 // uint8_t signal_identifier; 255 // } avdtp_signaling_packet_header_t; 256 257 typedef struct { 258 uint8_t version; 259 uint8_t padding; 260 uint8_t extension; 261 uint8_t csrc_count; 262 uint8_t marker; 263 uint8_t payload_type; 264 265 uint16_t sequence_number; 266 uint32_t timestamp; 267 uint32_t synchronization_source; 268 269 uint32_t csrc_list[AVDTP_MAX_CSRC_NUM]; 270 } avdtp_media_packet_header_t; 271 272 typedef enum { 273 AVDTP_BASIC_SERVICE_MODE, 274 AVDTP_MULTIPLEXING_SERVICE_MODE 275 } avdtp_service_mode_t; 276 277 typedef enum { 278 AVDTP_STREAM_ENDPOINT_IDLE, 279 AVDTP_STREAM_ENDPOINT_CONFIGURATION_SUBSTATEMACHINE, 280 AVDTP_STREAM_ENDPOINT_CONFIGURED, 281 282 AVDTP_STREAM_ENDPOINT_W2_REQUEST_OPEN_STREAM, 283 AVDTP_STREAM_ENDPOINT_W4_L2CAP_FOR_MEDIA_CONNECTED, 284 285 AVDTP_STREAM_ENDPOINT_OPENED, 286 AVDTP_STREAM_ENDPOINT_STREAMING, 287 288 AVDTP_STREAM_ENDPOINT_CLOSING, 289 AVDTP_STREAM_ENDPOINT_ABORTING, 290 AVDTP_STREAM_ENDPOINT_W4_L2CAP_FOR_MEDIA_DISCONNECTED 291 } avdtp_stream_endpoint_state_t; 292 293 typedef enum { 294 AVDTP_INITIATOR_STREAM_CONFIG_IDLE, 295 AVDTP_INITIATOR_W2_SET_CONFIGURATION, 296 AVDTP_INITIATOR_W2_SUSPEND_STREAM_WITH_SEID, 297 AVDTP_INITIATOR_W2_RECONFIGURE_STREAM_WITH_SEID, 298 299 AVDTP_INITIATOR_W2_OPEN_STREAM, 300 301 AVDTP_INITIATOR_W2_STREAMING_ABORT, 302 AVDTP_INITIATOR_FRAGMENTATED_COMMAND, 303 AVDTP_INITIATOR_W4_ANSWER 304 } avdtp_initiator_stream_endpoint_state_t; 305 306 typedef enum { 307 AVDTP_ACCEPTOR_STREAM_CONFIG_IDLE, 308 AVDTP_ACCEPTOR_W2_ANSWER_GET_CAPABILITIES, 309 AVDTP_ACCEPTOR_W2_ANSWER_GET_ALL_CAPABILITIES, 310 AVDTP_ACCEPTOR_W2_ANSWER_SET_CONFIGURATION, 311 AVDTP_ACCEPTOR_W2_ANSWER_RECONFIGURE, 312 AVDTP_ACCEPTOR_W2_ANSWER_GET_CONFIGURATION, 313 AVDTP_ACCEPTOR_W2_ANSWER_OPEN_STREAM, 314 AVDTP_ACCEPTOR_W2_ANSWER_START_STREAM, 315 AVDTP_ACCEPTOR_W2_ANSWER_CLOSE_STREAM, 316 AVDTP_ACCEPTOR_W2_ANSWER_ABORT_STREAM, 317 AVDTP_ACCEPTOR_W2_SUSPEND_STREAM_WITH_SEID, 318 AVDTP_ACCEPTOR_W2_ANSWER_SUSPEND_STREAM, 319 AVDTP_ACCEPTOR_W2_REJECT_WITH_ERROR_CODE, 320 AVDTP_ACCEPTOR_W2_REJECT_CATEGORY_WITH_ERROR_CODE, 321 AVDTP_ACCEPTOR_W2_REJECT_UNKNOWN_CMD, 322 AVDTP_ACCEPTOR_STREAMING 323 } avdtp_acceptor_stream_endpoint_state_t; 324 325 typedef struct { 326 uint8_t seid; // 0x01 – 0x3E, 6bit 327 uint8_t in_use; // 1 bit, 0 - not in use, 1 - in use 328 avdtp_media_type_t media_type; // 4 bit 329 avdtp_sep_type_t type; // 1 bit, 0 - SRC, 1 - SNK 330 331 uint16_t registered_service_categories; 332 avdtp_capabilities_t capabilities; 333 334 uint16_t configured_service_categories; 335 avdtp_capabilities_t configuration; 336 } avdtp_sep_t; 337 338 339 typedef enum { 340 AVDTP_SIGNALING_CONNECTION_IDLE, 341 AVDTP_SIGNALING_W4_SDP_QUERY_COMPLETE, 342 AVDTP_SIGNALING_CONNECTION_W4_L2CAP_CONNECTED, 343 AVDTP_SIGNALING_CONNECTION_OPENED, 344 AVDTP_SIGNALING_CONNECTION_W4_L2CAP_DISCONNECTED 345 } avdtp_connection_state_t; 346 347 typedef enum { 348 AVDTP_SIGNALING_CONNECTION_ACCEPTOR_IDLE, 349 AVDTP_SIGNALING_CONNECTION_ACCEPTOR_W2_ANSWER_DISCOVER_SEPS, 350 AVDTP_SIGNALING_CONNECTION_ACCEPTOR_W2_REJECT_WITH_ERROR_CODE, 351 AVDTP_SIGNALING_CONNECTION_ACCEPTOR_W2_REJECT_CATEGORY_WITH_ERROR_CODE, 352 AVDTP_SIGNALING_CONNECTION_ACCEPTOR_W2_GENERAL_REJECT_WITH_ERROR_CODE 353 } avdtp_acceptor_connection_state_t; 354 355 typedef enum { 356 AVDTP_SIGNALING_CONNECTION_INITIATOR_IDLE, 357 AVDTP_SIGNALING_CONNECTION_INITIATOR_W2_DISCOVER_SEPS, 358 AVDTP_SIGNALING_CONNECTION_INITIATOR_W2_GET_CAPABILITIES, 359 AVDTP_SIGNALING_CONNECTION_INITIATOR_W2_GET_ALL_CAPABILITIES, 360 AVDTP_SIGNALING_CONNECTION_INITIATOR_W2_GET_CONFIGURATION, 361 AVDTP_SIGNALING_CONNECTION_INITIATOR_W4_ANSWER 362 } avdtp_initiator_connection_state_t; 363 364 typedef struct { 365 uint8_t command[200]; 366 uint16_t size; 367 uint16_t offset; 368 uint8_t acp_seid; 369 uint8_t int_seid; 370 uint16_t transaction_label; 371 uint16_t num_packets; 372 avdtp_signal_identifier_t signal_identifier; 373 avdtp_message_type_t message_type; 374 avdtp_packet_type_t packet_type; 375 } avdtp_signaling_packet_t; 376 377 378 typedef struct { 379 btstack_linked_item_t item; 380 bd_addr_t remote_addr; 381 382 uint16_t avdtp_cid; 383 uint16_t l2cap_signaling_cid; 384 avdtp_service_mode_t service_mode; 385 386 avdtp_connection_state_t state; 387 avdtp_acceptor_connection_state_t acceptor_connection_state; 388 avdtp_initiator_connection_state_t initiator_connection_state; 389 390 // used for fragmentation 391 // avdtp_signaling_packet_header_t signaling_header; 392 avdtp_signaling_packet_t signaling_packet; 393 394 uint8_t disconnect; 395 396 uint8_t local_seid; 397 uint8_t remote_seid; 398 // for repeating the set_configuration 399 void * active_stream_endpoint; 400 401 uint8_t initiator_transaction_label; 402 uint8_t acceptor_transaction_label; 403 uint8_t wait_to_send_acceptor; 404 uint8_t wait_to_send_initiator; 405 uint8_t wait_to_send_self; 406 407 uint8_t suspended_seids[AVDTP_MAX_NUM_SEPS]; 408 uint8_t num_suspended_seids; 409 410 uint8_t reject_service_category; 411 avdtp_signal_identifier_t reject_signal_identifier; 412 uint8_t error_code; 413 414 // store configurations with remote seps 415 avdtp_sep_t remote_seps[AVDTP_MAX_NUM_SEPS]; 416 uint8_t remote_seps_num; 417 418 // store current role 419 uint8_t is_initiator; 420 uint8_t is_configuration_initiated_locally; 421 btstack_timer_source_t configuration_timer; 422 } avdtp_connection_t; 423 424 typedef enum { 425 A2DP_IDLE, 426 A2DP_CONNECTED, 427 A2DP_W2_DISCOVER_SEPS, 428 A2DP_W2_GET_CAPABILITIES, 429 A2DP_W2_GET_ALL_CAPABILITIES, 430 A2DP_W2_SET_CONFIGURATION, //5 431 A2DP_W4_GET_CONFIGURATION, 432 A2DP_W4_SET_CONFIGURATION, 433 A2DP_W2_SUSPEND_STREAM_WITH_SEID, 434 A2DP_W2_RECONFIGURE_WITH_SEID, 435 A2DP_W2_OPEN_STREAM_WITH_SEID, //10 436 A2DP_W4_OPEN_STREAM_WITH_SEID, 437 A2DP_W2_START_STREAM_WITH_SEID, 438 A2DP_W2_ABORT_STREAM_WITH_SEID, 439 A2DP_W2_STOP_STREAM_WITH_SEID, 440 A2DP_STREAMING_OPENED 441 } a2dp_state_t; 442 443 typedef struct avdtp_stream_endpoint { 444 btstack_linked_item_t item; 445 446 // original capabilities 447 avdtp_sep_t sep; 448 hci_con_handle_t media_con_handle; 449 uint16_t l2cap_media_cid; 450 uint16_t l2cap_reporting_cid; 451 uint16_t l2cap_recovery_cid; 452 453 avdtp_stream_endpoint_state_t state; 454 avdtp_acceptor_stream_endpoint_state_t acceptor_config_state; 455 avdtp_initiator_stream_endpoint_state_t initiator_config_state; 456 a2dp_state_t a2dp_state; 457 // active connection 458 avdtp_connection_t * connection; 459 // currently active remote seid 460 uint8_t remote_sep_index; 461 avdtp_capabilities_t remote_capabilities; 462 uint16_t remote_capabilities_bitmap; 463 464 uint16_t remote_configuration_bitmap; 465 avdtp_capabilities_t remote_configuration; 466 467 // temporary SBC config 468 avdtp_media_codec_type_t media_codec_type; 469 avdtp_media_type_t media_type; 470 uint8_t media_codec_sbc_info[4]; 471 472 // register request for media L2cap connection release 473 uint8_t media_disconnect; 474 uint8_t media_connect; 475 uint8_t start_stream; 476 uint8_t stop_stream; 477 uint8_t send_stream; 478 uint8_t abort_stream; 479 uint8_t suspend_stream; 480 481 uint16_t sequence_number; 482 } avdtp_stream_endpoint_t; 483 484 typedef struct { 485 // to app 486 bd_addr_t remote_addr; 487 488 uint32_t fill_audio_ring_buffer_timeout_ms; 489 uint32_t time_audio_data_sent; // msstream 490 uint32_t acc_num_missed_samples; 491 uint32_t samples_ready; 492 btstack_timer_source_t fill_audio_ring_buffer_timer; 493 btstack_ring_buffer_t sbc_ring_buffer; 494 495 int reconfigure; 496 int num_channels; 497 int sampling_frequency; 498 int channel_mode; 499 int block_length; 500 int subbands; 501 int allocation_method; 502 int min_bitpool_value; 503 int max_bitpool_value; 504 avdtp_stream_endpoint_t * local_stream_endpoint; 505 avdtp_sep_t * active_remote_sep; 506 } avdtp_stream_endpoint_context_t; 507 508 typedef struct { 509 btstack_linked_list_t connections; 510 btstack_linked_list_t stream_endpoints; 511 uint16_t stream_endpoints_id_counter; 512 uint16_t initiator_transaction_id_counter; 513 btstack_packet_handler_t avdtp_callback; 514 btstack_packet_handler_t a2dp_callback; 515 void (*handle_media_data)(uint8_t local_seid, uint8_t *packet, uint16_t size); 516 btstack_packet_handler_t packet_handler; 517 518 avdtp_sep_type_t query_role; 519 520 // SDP query 521 uint16_t avdtp_cid; 522 uint16_t avdtp_l2cap_psm; 523 uint16_t avdtp_version; 524 uint8_t role_supported; 525 } avdtp_context_t; 526 527 void avdtp_register_media_transport_category(avdtp_stream_endpoint_t * stream_endpoint); 528 void avdtp_register_reporting_category(avdtp_stream_endpoint_t * stream_endpoint); 529 void avdtp_register_delay_reporting_category(avdtp_stream_endpoint_t * stream_endpoint); 530 void avdtp_register_recovery_category(avdtp_stream_endpoint_t * stream_endpoint, uint8_t maximum_recovery_window_size, uint8_t maximum_number_media_packets); 531 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); 532 void avdtp_register_header_compression_category(avdtp_stream_endpoint_t * stream_endpoint, uint8_t back_ch, uint8_t media, uint8_t recovery); 533 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); 534 void avdtp_register_multiplexing_category(avdtp_stream_endpoint_t * stream_endpoint, uint8_t fragmentation); 535 void avdtp_handle_can_send_now(avdtp_connection_t * connection, uint16_t l2cap_cid, avdtp_context_t * context); 536 537 void avdtp_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size, avdtp_context_t * context); 538 avdtp_connection_t * avdtp_create_connection(bd_addr_t remote_addr, avdtp_context_t * context); 539 avdtp_stream_endpoint_t * avdtp_create_stream_endpoint(avdtp_sep_type_t sep_type, avdtp_media_type_t media_type, avdtp_context_t * context); 540 541 uint8_t avdtp_connect(bd_addr_t remote, avdtp_sep_type_t query_role, avdtp_context_t * context, uint16_t * avdtp_cid); 542 uint8_t avdtp_disconnect(uint16_t avdtp_cid, avdtp_context_t * context); 543 uint8_t avdtp_open_stream(uint16_t avdtp_cid, uint8_t local_seid, uint8_t remote_seid, avdtp_context_t * context); 544 uint8_t avdtp_start_stream(uint16_t avdtp_cid, uint8_t local_seid, avdtp_context_t * context); 545 uint8_t avdtp_stop_stream (uint16_t avdtp_cid, uint8_t local_seid, avdtp_context_t * context); 546 uint8_t avdtp_abort_stream(uint16_t avdtp_cid, uint8_t local_seid, avdtp_context_t * context); 547 uint8_t avdtp_suspend_stream(uint16_t avdtp_cid, uint8_t local_seid, avdtp_context_t * context); 548 549 uint8_t avdtp_discover_stream_endpoints(uint16_t avdtp_cid, avdtp_context_t * context); 550 uint8_t avdtp_get_capabilities(uint16_t avdtp_cid, uint8_t remote_seid, avdtp_context_t * context); 551 uint8_t avdtp_get_all_capabilities(uint16_t avdtp_cid, uint8_t remote_seid, avdtp_context_t * context); 552 uint8_t avdtp_get_configuration(uint16_t avdtp_cid, uint8_t remote_seid, avdtp_context_t * context); 553 uint8_t 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); 554 uint8_t 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); 555 uint8_t avdtp_remote_seps_num(uint16_t avdtp_cid, avdtp_context_t * context); 556 avdtp_sep_t * avdtp_remote_sep(uint16_t avdtp_cid, uint8_t index, avdtp_context_t * context); 557 558 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); 559 uint8_t avdtp_choose_sbc_channel_mode(avdtp_stream_endpoint_t * stream_endpoint, uint8_t remote_channel_mode_bitmap); 560 uint8_t avdtp_choose_sbc_allocation_method(avdtp_stream_endpoint_t * stream_endpoint, uint8_t remote_allocation_method_bitmap); 561 562 uint8_t avdtp_choose_sbc_subbands(avdtp_stream_endpoint_t * stream_endpoint, uint8_t remote_subbands_bitmap); 563 uint8_t avdtp_choose_sbc_block_length(avdtp_stream_endpoint_t * stream_endpoint, uint8_t remote_block_length_bitmap); 564 uint8_t avdtp_choose_sbc_sampling_frequency(avdtp_stream_endpoint_t * stream_endpoint, uint8_t remote_sampling_frequency_bitmap); 565 uint8_t avdtp_choose_sbc_max_bitpool_value(avdtp_stream_endpoint_t * stream_endpoint, uint8_t remote_max_bitpool_value); 566 uint8_t avdtp_choose_sbc_min_bitpool_value(avdtp_stream_endpoint_t * stream_endpoint, uint8_t remote_min_bitpool_value); 567 568 uint8_t avdtp_stream_endpoint_seid(avdtp_stream_endpoint_t * stream_endpoint); 569 void avdtp_configuration_timeout_handler(btstack_timer_source_t * timer); 570 void avdtp_configuration_timer_start(avdtp_connection_t * connection); 571 void avdtp_configuration_timer_stop(avdtp_connection_t * connection); 572 573 #if defined __cplusplus 574 } 575 #endif 576 577 #endif // __AVDTP_H