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 100 101 #define AVDTP_INVALID_SEP_SEID 0xFF 102 103 // Signal Identifier fields 104 typedef enum { 105 AVDTP_SI_NONE = 0x00, 106 AVDTP_SI_DISCOVER = 0x01, 107 AVDTP_SI_GET_CAPABILITIES, 108 AVDTP_SI_SET_CONFIGURATION, 109 AVDTP_SI_GET_CONFIGURATION, 110 AVDTP_SI_RECONFIGURE, //5 111 AVDTP_SI_OPEN, //6 112 AVDTP_SI_START, //7 113 AVDTP_SI_CLOSE, 114 AVDTP_SI_SUSPEND, 115 AVDTP_SI_ABORT, //10 116 AVDTP_SI_SECURITY_CONTROL, 117 AVDTP_SI_GET_ALL_CAPABILITIES, //12 118 AVDTP_SI_DELAYREPORT 119 } avdtp_signal_identifier_t; 120 121 typedef enum { 122 AVDTP_SINGLE_PACKET= 0, 123 AVDTP_START_PACKET , 124 AVDTP_CONTINUE_PACKET , 125 AVDTP_END_PACKET 126 } avdtp_packet_type_t; 127 128 typedef enum { 129 AVDTP_CMD_MSG = 0, 130 AVDTP_GENERAL_REJECT_MSG , 131 AVDTP_RESPONSE_ACCEPT_MSG , 132 AVDTP_RESPONSE_REJECT_MSG 133 } avdtp_message_type_t; 134 135 typedef enum{ 136 AVDTP_AUDIO = 0, 137 AVDTP_VIDEO, 138 AVDTP_MULTIMEDIA 139 } avdtp_media_type_t; 140 141 typedef enum{ 142 AVDTP_CODEC_SBC = 0x00, 143 AVDTP_CODEC_MPEG_1_2_AUDIO = 0x01, 144 AVDTP_CODEC_MPEG_2_4_AAC = 0x02, 145 AVDTP_CODEC_ATRAC_FAMILY = 0x04, 146 AVDTP_CODEC_NON_A2DP = 0xFF 147 } avdtp_media_codec_type_t; 148 149 typedef enum{ 150 AVDTP_CONTENT_PROTECTION_DTCP = 0x0001, 151 AVDTP_CONTENT_PROTECTION_SCMS_T = 0x0002 152 } avdtp_content_protection_type_t; 153 154 typedef enum{ 155 AVDTP_SOURCE = 0, 156 AVDTP_SINK 157 } avdtp_sep_type_t; 158 159 typedef enum { 160 AVDTP_SERVICE_CATEGORY_INVALID_0 = 0x00, 161 AVDTP_MEDIA_TRANSPORT = 0X01, 162 AVDTP_REPORTING, 163 AVDTP_RECOVERY, 164 AVDTP_CONTENT_PROTECTION, //4 165 AVDTP_HEADER_COMPRESSION, //5 166 AVDTP_MULTIPLEXING, //6 167 AVDTP_MEDIA_CODEC, //7 168 AVDTP_DELAY_REPORTING, //8 169 AVDTP_SERVICE_CATEGORY_INVALID_FF = 0xFF 170 } avdtp_service_category_t; 171 172 typedef struct { 173 uint8_t recovery_type; // 0x01 = RFC2733 174 uint8_t maximum_recovery_window_size; // 0x01 to 0x18, for a Transport Packet 175 uint8_t maximum_number_media_packets; // 0x01 to 0x18, The maximum number of media packets a specific parity code covers 176 } avdtp_recovery_capabilities_t; 177 178 typedef struct { 179 avdtp_media_type_t media_type; 180 avdtp_media_codec_type_t media_codec_type; 181 uint16_t media_codec_information_len; 182 uint8_t * media_codec_information; 183 } adtvp_media_codec_capabilities_t; 184 185 186 typedef struct { 187 uint16_t cp_type; 188 uint16_t cp_type_value_len; 189 uint8_t cp_type_value[AVDTP_MAX_CONTENT_PROTECTION_TYPE_VALUE_LEN]; 190 } adtvp_content_protection_t; 191 192 typedef struct{ 193 uint8_t back_ch; // byte0 - bit 8; 0=Not Available/Not Used; 1=Available/In Use 194 uint8_t media; // byte0 - bit 7 195 uint8_t recovery; // byte0 - bit 6 196 } avdtp_header_compression_capabilities_t; 197 198 typedef struct{ 199 uint8_t fragmentation; // byte0 - bit 8, Allow Adaptation Layer Fragmentation, 0 no, 1 yes 200 // Request/indicate value of the Transport Session Identifier for a media, reporting, or recovery transport sessions, respectively 201 uint8_t transport_identifiers_num; 202 uint8_t transport_session_identifiers[3]; // byte1, upper 5bits, 0x01 to 0x1E 203 // Request/indicate value for TCID for a media, reporting, or transport session 204 uint8_t tcid[3]; // byte2 0x01 to 0x1E 205 } avdtp_multiplexing_mode_capabilities_t; 206 207 typedef struct{ 208 avdtp_recovery_capabilities_t recovery; 209 adtvp_media_codec_capabilities_t media_codec; 210 adtvp_content_protection_t content_protection; 211 avdtp_header_compression_capabilities_t header_compression; 212 avdtp_multiplexing_mode_capabilities_t multiplexing_mode; 213 } avdtp_capabilities_t; 214 215 typedef enum{ 216 AVDTP_SBC_48000 = 1, 217 AVDTP_SBC_44100 = 2, 218 AVDTP_SBC_32000 = 4, 219 AVDTP_SBC_16000 = 8 220 } avdtp_sbc_sampling_frequency_t; 221 222 typedef enum{ 223 AVDTP_SBC_JOINT_STEREO = 1, 224 AVDTP_SBC_STEREO = 2, 225 AVDTP_SBC_DUAL_CHANNEL = 4, 226 AVDTP_SBC_MONO = 8 227 } avdtp_sbc_channel_mode_t; 228 229 typedef enum{ 230 AVDTP_SBC_BLOCK_LENGTH_16 = 1, 231 AVDTP_SBC_BLOCK_LENGTH_12 = 2, 232 AVDTP_SBC_BLOCK_LENGTH_8 = 4, 233 AVDTP_SBC_BLOCK_LENGTH_4 = 8 234 } avdtp_sbc_block_length_t; 235 236 typedef enum{ 237 AVDTP_SBC_SUBBANDS_8 = 1, 238 AVDTP_SBC_SUBBANDS_4 = 2 239 } avdtp_sbc_subbands_t; 240 241 typedef enum{ 242 AVDTP_SBC_ALLOCATION_METHOD_LOUDNESS = 1, 243 AVDTP_SBC_ALLOCATION_METHOD_SNR = 2 244 } avdtp_sbc_allocation_method_t; 245 246 typedef struct { 247 uint8_t fragmentation; 248 uint8_t starting_packet; // of fragmented SBC frame 249 uint8_t last_packet; // of fragmented SBC frame 250 uint8_t num_frames; 251 } avdtp_sbc_codec_header_t; 252 253 // typedef struct { 254 // uint8_t transaction_label; 255 // avdtp_packet_type_t packet_type; 256 // avdtp_message_type_t message_type; 257 // uint8_t signal_identifier; 258 // } avdtp_signaling_packet_header_t; 259 260 typedef struct { 261 uint8_t version; 262 uint8_t padding; 263 uint8_t extension; 264 uint8_t csrc_count; 265 uint8_t marker; 266 uint8_t payload_type; 267 268 uint16_t sequence_number; 269 uint32_t timestamp; 270 uint32_t synchronization_source; 271 272 uint32_t csrc_list[AVDTP_MAX_CSRC_NUM]; 273 } avdtp_media_packet_header_t; 274 275 typedef enum { 276 AVDTP_BASIC_SERVICE_MODE, 277 AVDTP_MULTIPLEXING_SERVICE_MODE 278 } avdtp_service_mode_t; 279 280 typedef enum { 281 AVDTP_STREAM_ENDPOINT_IDLE, 282 AVDTP_STREAM_ENDPOINT_CONFIGURATION_SUBSTATEMACHINE, 283 AVDTP_STREAM_ENDPOINT_CONFIGURED, 284 285 AVDTP_STREAM_ENDPOINT_W2_REQUEST_OPEN_STREAM, 286 AVDTP_STREAM_ENDPOINT_W4_L2CAP_FOR_MEDIA_CONNECTED, 287 288 AVDTP_STREAM_ENDPOINT_OPENED, 289 AVDTP_STREAM_ENDPOINT_STREAMING, 290 291 AVDTP_STREAM_ENDPOINT_CLOSING, 292 AVDTP_STREAM_ENDPOINT_ABORTING, 293 AVDTP_STREAM_ENDPOINT_W4_L2CAP_FOR_MEDIA_DISCONNECTED 294 } avdtp_stream_endpoint_state_t; 295 296 typedef enum { 297 AVDTP_INITIATOR_STREAM_CONFIG_IDLE, 298 AVDTP_INITIATOR_W2_SET_CONFIGURATION, 299 AVDTP_INITIATOR_W2_SUSPEND_STREAM_WITH_SEID, 300 AVDTP_INITIATOR_W2_RECONFIGURE_STREAM_WITH_SEID, 301 302 AVDTP_INITIATOR_W2_OPEN_STREAM, 303 304 AVDTP_INITIATOR_W2_STREAMING_ABORT, 305 AVDTP_INITIATOR_FRAGMENTATED_COMMAND, 306 AVDTP_INITIATOR_W4_ANSWER 307 } avdtp_initiator_stream_endpoint_state_t; 308 309 typedef enum { 310 AVDTP_ACCEPTOR_STREAM_CONFIG_IDLE, 311 AVDTP_ACCEPTOR_W2_ANSWER_GET_CAPABILITIES, 312 AVDTP_ACCEPTOR_W2_ANSWER_GET_ALL_CAPABILITIES, 313 AVDTP_ACCEPTOR_W2_ANSWER_DELAY_REPORT, 314 AVDTP_ACCEPTOR_W2_ANSWER_SET_CONFIGURATION, 315 AVDTP_ACCEPTOR_W2_ANSWER_RECONFIGURE, 316 AVDTP_ACCEPTOR_W2_ANSWER_GET_CONFIGURATION, 317 AVDTP_ACCEPTOR_W2_ANSWER_OPEN_STREAM, 318 AVDTP_ACCEPTOR_W2_ANSWER_START_STREAM, 319 AVDTP_ACCEPTOR_W2_ANSWER_CLOSE_STREAM, 320 AVDTP_ACCEPTOR_W2_ANSWER_ABORT_STREAM, 321 AVDTP_ACCEPTOR_W2_SUSPEND_STREAM_WITH_SEID, 322 AVDTP_ACCEPTOR_W2_ANSWER_SUSPEND_STREAM, 323 AVDTP_ACCEPTOR_W2_REJECT_WITH_ERROR_CODE, 324 AVDTP_ACCEPTOR_W2_REJECT_CATEGORY_WITH_ERROR_CODE, 325 AVDTP_ACCEPTOR_W2_REJECT_UNKNOWN_CMD, 326 AVDTP_ACCEPTOR_STREAMING 327 } avdtp_acceptor_stream_endpoint_state_t; 328 329 typedef struct { 330 uint8_t seid; // 0x01 – 0x3E, 6bit 331 uint8_t in_use; // 1 bit, 0 - not in use, 1 - in use 332 avdtp_media_type_t media_type; // 4 bit 333 avdtp_sep_type_t type; // 1 bit, 0 - SRC, 1 - SNK 334 335 uint16_t registered_service_categories; 336 avdtp_capabilities_t capabilities; 337 338 uint16_t configured_service_categories; 339 avdtp_capabilities_t configuration; 340 } avdtp_sep_t; 341 342 343 typedef enum { 344 AVDTP_SIGNALING_CONNECTION_IDLE, 345 AVDTP_SIGNALING_W4_SDP_QUERY_COMPLETE, 346 AVDTP_SIGNALING_CONNECTION_W4_L2CAP_CONNECTED, 347 AVDTP_SIGNALING_CONNECTION_OPENED, 348 AVDTP_SIGNALING_CONNECTION_W4_L2CAP_DISCONNECTED 349 } avdtp_connection_state_t; 350 351 typedef enum { 352 AVDTP_SIGNALING_CONNECTION_ACCEPTOR_IDLE, 353 AVDTP_SIGNALING_CONNECTION_ACCEPTOR_W2_ANSWER_DISCOVER_SEPS, 354 AVDTP_SIGNALING_CONNECTION_ACCEPTOR_W2_REJECT_WITH_ERROR_CODE, 355 AVDTP_SIGNALING_CONNECTION_ACCEPTOR_W2_REJECT_CATEGORY_WITH_ERROR_CODE, 356 AVDTP_SIGNALING_CONNECTION_ACCEPTOR_W2_GENERAL_REJECT_WITH_ERROR_CODE 357 } avdtp_acceptor_connection_state_t; 358 359 typedef enum { 360 AVDTP_SIGNALING_CONNECTION_INITIATOR_IDLE, 361 AVDTP_SIGNALING_CONNECTION_INITIATOR_W2_DISCOVER_SEPS, 362 AVDTP_SIGNALING_CONNECTION_INITIATOR_W2_GET_CAPABILITIES, 363 AVDTP_SIGNALING_CONNECTION_INITIATOR_W2_GET_ALL_CAPABILITIES, 364 AVDTP_SIGNALING_CONNECTION_INITIATOR_W2_GET_CONFIGURATION, 365 AVDTP_SIGNALING_CONNECTION_INITIATOR_W2_SEND_DELAY_REPORT, 366 AVDTP_SIGNALING_CONNECTION_INITIATOR_W4_ANSWER 367 } avdtp_initiator_connection_state_t; 368 369 typedef struct { 370 uint8_t command[200]; 371 uint16_t size; 372 uint16_t offset; 373 uint8_t acp_seid; 374 uint8_t int_seid; 375 uint16_t transaction_label; 376 uint16_t num_packets; 377 avdtp_signal_identifier_t signal_identifier; 378 avdtp_message_type_t message_type; 379 avdtp_packet_type_t packet_type; 380 } avdtp_signaling_packet_t; 381 382 typedef enum { 383 AVDTP_CONFIGURATION_STATE_IDLE, 384 AVDTP_CONFIGURATION_STATE_LOCAL_INITIATED, 385 AVDTP_CONFIGURATION_STATE_LOCAL_CONFIGURED, 386 AVDTP_CONFIGURATION_STATE_REMOTE_INITIATED, 387 AVDTP_CONFIGURATION_STATE_REMOTE_CONFIGURED, 388 } avtdp_configuration_state_t; 389 390 typedef struct { 391 btstack_linked_item_t item; 392 bd_addr_t remote_addr; 393 394 uint16_t avdtp_cid; 395 uint16_t l2cap_signaling_cid; 396 avdtp_service_mode_t service_mode; 397 398 avdtp_connection_state_t state; 399 avdtp_acceptor_connection_state_t acceptor_connection_state; 400 avdtp_initiator_connection_state_t initiator_connection_state; 401 402 avdtp_signaling_packet_t acceptor_signaling_packet; 403 avdtp_signaling_packet_t initiator_signaling_packet; 404 405 uint8_t disconnect; 406 407 uint8_t initiator_local_seid; 408 uint8_t initiator_remote_seid; 409 410 uint8_t acceptor_local_seid; 411 412 uint16_t delay_ms; 413 414 // for repeating the set_configuration 415 void * active_stream_endpoint; 416 417 uint8_t initiator_transaction_label; 418 uint8_t acceptor_transaction_label; 419 uint8_t wait_to_send_acceptor; 420 uint8_t wait_to_send_initiator; 421 uint8_t wait_to_send_self; 422 423 uint8_t suspended_seids[AVDTP_MAX_NUM_SEPS]; 424 uint8_t num_suspended_seids; 425 426 uint8_t reject_service_category; 427 avdtp_signal_identifier_t reject_signal_identifier; 428 uint8_t error_code; 429 430 // configuration state machine 431 avtdp_configuration_state_t configuration_state; 432 433 btstack_timer_source_t configuration_timer; 434 } avdtp_connection_t; 435 436 typedef enum { 437 A2DP_IDLE, 438 A2DP_W4_CONNECTED, 439 A2DP_CONNECTED, 440 A2DP_W2_DISCOVER_SEPS, 441 A2DP_W2_GET_CAPABILITIES, 442 A2DP_W2_GET_ALL_CAPABILITIES, 443 A2DP_W2_SET_CONFIGURATION, //5 444 A2DP_W4_GET_CONFIGURATION, 445 A2DP_W4_SET_CONFIGURATION, 446 A2DP_W2_SUSPEND_STREAM_WITH_SEID, 447 A2DP_W2_RECONFIGURE_WITH_SEID, 448 A2DP_W2_OPEN_STREAM_WITH_SEID, //10 449 A2DP_W4_OPEN_STREAM_WITH_SEID, 450 A2DP_W2_START_STREAM_WITH_SEID, 451 A2DP_W2_ABORT_STREAM_WITH_SEID, 452 A2DP_W2_STOP_STREAM_WITH_SEID, 453 A2DP_STREAMING_OPENED 454 } a2dp_state_t; 455 456 typedef struct avdtp_stream_endpoint { 457 btstack_linked_item_t item; 458 459 // original capabilities 460 avdtp_sep_t sep; 461 avdtp_sep_t remote_sep; 462 hci_con_handle_t media_con_handle; 463 uint16_t l2cap_media_cid; 464 uint16_t l2cap_reporting_cid; 465 uint16_t l2cap_recovery_cid; 466 467 avdtp_stream_endpoint_state_t state; 468 avdtp_acceptor_stream_endpoint_state_t acceptor_config_state; 469 avdtp_initiator_stream_endpoint_state_t initiator_config_state; 470 a2dp_state_t a2dp_state; 471 // active connection 472 avdtp_connection_t * connection; 473 474 // currently active remote seid 475 avdtp_capabilities_t remote_capabilities; 476 uint16_t remote_capabilities_bitmap; 477 478 uint16_t remote_configuration_bitmap; 479 avdtp_capabilities_t remote_configuration; 480 481 // temporary SBC config 482 avdtp_media_codec_type_t media_codec_type; 483 avdtp_media_type_t media_type; 484 uint8_t media_codec_sbc_info[4]; 485 486 // temporary reconfigure SBC config used by A2DP 487 uint8_t reconfigure_media_codec_sbc_info[4]; 488 489 // preferred sampling frequency 490 uint32_t preferred_sampling_frequency; 491 492 // register request for media L2cap connection release 493 uint8_t media_disconnect; 494 uint8_t media_connect; 495 uint8_t start_stream; 496 uint8_t stop_stream; 497 uint8_t send_stream; 498 uint8_t abort_stream; 499 uint8_t suspend_stream; 500 uint16_t sequence_number; 501 } avdtp_stream_endpoint_t; 502 503 typedef struct { 504 // to app 505 bd_addr_t remote_addr; 506 uint16_t avdtp_cid; 507 508 uint32_t fill_audio_ring_buffer_timeout_ms; 509 uint32_t time_audio_data_sent; // msstream 510 uint32_t acc_num_missed_samples; 511 uint32_t samples_ready; 512 btstack_timer_source_t fill_audio_ring_buffer_timer; 513 btstack_ring_buffer_t sbc_ring_buffer; 514 515 int reconfigure; 516 int num_channels; 517 int sampling_frequency; 518 int channel_mode; 519 int block_length; 520 int subbands; 521 int allocation_method; 522 int min_bitpool_value; 523 int max_bitpool_value; 524 avdtp_stream_endpoint_t * local_stream_endpoint; 525 uint8_t active_remote_sep_index; 526 avdtp_sep_t * active_remote_sep; 527 } avdtp_stream_endpoint_context_t; 528 529 typedef struct { 530 btstack_linked_list_t connections; 531 btstack_linked_list_t stream_endpoints; 532 uint16_t stream_endpoints_id_counter; 533 uint16_t initiator_transaction_id_counter; 534 btstack_packet_handler_t avdtp_callback; 535 btstack_packet_handler_t a2dp_callback; 536 void (*handle_media_data)(uint8_t local_seid, uint8_t *packet, uint16_t size); 537 btstack_packet_handler_t packet_handler; 538 539 avdtp_sep_type_t query_role; 540 541 // SDP query 542 uint16_t avdtp_cid; 543 uint16_t avdtp_l2cap_psm; 544 uint16_t avdtp_version; 545 uint8_t role_supported; 546 } avdtp_context_t; 547 548 void avdtp_register_media_transport_category(avdtp_stream_endpoint_t * stream_endpoint); 549 void avdtp_register_reporting_category(avdtp_stream_endpoint_t * stream_endpoint); 550 void avdtp_register_delay_reporting_category(avdtp_stream_endpoint_t * stream_endpoint); 551 void avdtp_register_recovery_category(avdtp_stream_endpoint_t * stream_endpoint, uint8_t maximum_recovery_window_size, uint8_t maximum_number_media_packets); 552 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); 553 void avdtp_register_header_compression_category(avdtp_stream_endpoint_t * stream_endpoint, uint8_t back_ch, uint8_t media, uint8_t recovery); 554 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); 555 void avdtp_register_multiplexing_category(avdtp_stream_endpoint_t * stream_endpoint, uint8_t fragmentation); 556 void avdtp_handle_can_send_now(avdtp_connection_t * connection, uint16_t l2cap_cid, avdtp_context_t * context); 557 558 void avdtp_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size, avdtp_context_t * context); 559 avdtp_connection_t * avdtp_create_connection(bd_addr_t remote_addr, avdtp_context_t * context); 560 avdtp_stream_endpoint_t * avdtp_create_stream_endpoint(avdtp_sep_type_t sep_type, avdtp_media_type_t media_type, avdtp_context_t * context); 561 562 uint8_t avdtp_connect(bd_addr_t remote, avdtp_sep_type_t query_role, avdtp_context_t * context, uint16_t * avdtp_cid); 563 uint8_t avdtp_disconnect(uint16_t avdtp_cid, avdtp_context_t * context); 564 uint8_t avdtp_open_stream(uint16_t avdtp_cid, uint8_t local_seid, uint8_t remote_seid, avdtp_context_t * context); 565 uint8_t avdtp_start_stream(uint16_t avdtp_cid, uint8_t local_seid, avdtp_context_t * context); 566 uint8_t avdtp_stop_stream (uint16_t avdtp_cid, uint8_t local_seid, avdtp_context_t * context); 567 uint8_t avdtp_abort_stream(uint16_t avdtp_cid, uint8_t local_seid, avdtp_context_t * context); 568 uint8_t avdtp_suspend_stream(uint16_t avdtp_cid, uint8_t local_seid, avdtp_context_t * context); 569 570 uint8_t avdtp_discover_stream_endpoints(uint16_t avdtp_cid, avdtp_context_t * context); 571 uint8_t avdtp_get_capabilities(uint16_t avdtp_cid, uint8_t remote_seid, avdtp_context_t * context); 572 uint8_t avdtp_get_all_capabilities(uint16_t avdtp_cid, uint8_t remote_seid, avdtp_context_t * context); 573 uint8_t avdtp_get_configuration(uint16_t avdtp_cid, uint8_t remote_seid, avdtp_context_t * context); 574 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); 575 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); 576 577 // frequency will be used by avdtp_choose_sbc_sampling_frequency if supported by both endpoints 578 void avdtp_set_preferred_sampling_frequeny(avdtp_stream_endpoint_t * stream_endpoint, uint32_t sampling_frequency); 579 // 580 void avdtp_set_preferred_sbc_channel_mode(avdtp_stream_endpoint_t * stream_endpoint, uint32_t sampling_frequency); 581 582 uint8_t avdtp_choose_sbc_channel_mode(avdtp_stream_endpoint_t * stream_endpoint, uint8_t remote_channel_mode_bitmap); 583 uint8_t avdtp_choose_sbc_allocation_method(avdtp_stream_endpoint_t * stream_endpoint, uint8_t remote_allocation_method_bitmap); 584 uint8_t avdtp_choose_sbc_sampling_frequency(avdtp_stream_endpoint_t * stream_endpoint, uint8_t remote_sampling_frequency_bitmap); 585 uint8_t avdtp_choose_sbc_subbands(avdtp_stream_endpoint_t * stream_endpoint, uint8_t remote_subbands_bitmap); 586 uint8_t avdtp_choose_sbc_block_length(avdtp_stream_endpoint_t * stream_endpoint, uint8_t remote_block_length_bitmap); 587 uint8_t avdtp_choose_sbc_max_bitpool_value(avdtp_stream_endpoint_t * stream_endpoint, uint8_t remote_max_bitpool_value); 588 uint8_t avdtp_choose_sbc_min_bitpool_value(avdtp_stream_endpoint_t * stream_endpoint, uint8_t remote_min_bitpool_value); 589 590 uint8_t avdtp_stream_endpoint_seid(avdtp_stream_endpoint_t * stream_endpoint); 591 592 uint8_t is_avdtp_remote_seid_registered(avdtp_stream_endpoint_t * stream_endpoint); 593 #if defined __cplusplus 594 } 595 #endif 596 597 #endif // AVDTP_H 598