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 * avrcp.h 40 * 41 * Audio/Video Remote Control Profile 42 * 43 */ 44 45 #ifndef __AVRCP_H 46 #define __AVRCP_H 47 48 #include <stdint.h> 49 #include "btstack_run_loop.h" 50 #include "btstack_linked_list.h" 51 52 #if defined __cplusplus 53 extern "C" { 54 #endif 55 56 #define BT_SIG_COMPANY_ID 0x001958 57 #define AVRCP_MEDIA_ATTR_COUNT 7 58 #define AVRCP_MAX_ATTRIBUTTE_SIZE 100 59 #define AVRCP_ATTRIBUTE_HEADER_LEN 8 60 #define AVRCP_MAX_FOLDER_NAME_SIZE 20 61 62 typedef enum { 63 AVRCP_STATUS_INVALID_COMMAND = 0, // sent if TG received a PDU that it did not understand. 64 AVRCP_STATUS_INVALID_PARAMETER, // Sent if the TG received a PDU with a parameter ID that it did not understand, or, if there is only one parameter ID in the PDU. 65 AVRCP_STATUS_SPECIFIED_PARAMETER_NOT_FOUND, // sent if the parameter ID is understood, but content is wrong or corrupted. 66 AVRCP_STATUS_INTERNAL_ERROR, // sent if there are error conditions not covered by a more specific error code. 67 AVRCP_STATUS_SUCCESS, // sent if the operation was successful. 68 AVRCP_STATUS_UID_CHANGED, // sent if the UIDs on the device have changed. 69 AVRCP_STATUS_RESERVED_6, 70 AVRCP_STATUS_INVALID_DIRECTION, // The Direction parameter is invalid. Valid for command: Change Path 71 AVRCP_STATUS_NOT_A_DIRECTORY, // The UID provided does not refer to a folder item. Valid for command: Change Path 72 AVRCP_STATUS_DOES_NOT_EXIST, // The UID provided does not refer to any currently valid. Valid for command: Change Path, PlayItem, AddToNowPlaying, GetItemAttributes 73 AVRCP_STATUS_INVALID_SCOPE, // The scope parameter is invalid. Valid for command: GetFolderItems, PlayItem, AddToNowPlayer, GetItemAttributes, 74 AVRCP_STATUS_RANGE_OUT_OF_BOUNDS, // The start of range provided is not valid. Valid for command: GetFolderItems 75 AVRCP_STATUS_UID_IS_A_DIRECTORY, // The UID provided refers to a directory, which cannot be handled by this media player. Valid for command: PlayItem, AddToNowPlaying 76 AVRCP_STATUS_MEDIA_IN_USE, // The media is not able to be used for this operation at this time. Valid for command: PlayItem, AddToNowPlaying 77 AVRCP_STATUS_NOW_PLAYING_LIST_FULL, // No more items can be added to the Now Playing List. Valid for command: AddToNowPlaying 78 AVRCP_STATUS_SEARCH_NOT_SUPPORTED, // The Browsed Media Player does not support search. Valid for command: Search 79 AVRCP_STATUS_SEARCH_IN_PROGRESS, // A search operation is already in progress. Valid for command: Search 80 AVRCP_STATUS_INVALID_PLAYER_ID, // The specified Player Id does not refer to a valid player. Valid for command: SetAddressedPlayer, SetBrowsedPlayer 81 AVRCP_STATUS_PLAYER_NOT_BROWSABLE, // The Player Id supplied refers to a Media Player which does not support browsing. Valid for command: SetBrowsedPlayer 82 AVRCP_STATUS_PLAYER_NOT_ADDRESSED, // The Player Id supplied refers to a player which is not currently addressed, and the command is not able to be performed if the player is not set as addressed. Valid for command: Search SetBrowsedPlayer 83 AVRCP_STATUS_NO_VALID_SEARCH_RESULTS, // The Search result list does not contain valid entries, e.g. after being invalidated due to change of browsed player. Valid for command: GetFolderItems 84 AVRCP_STATUS_NO_AVAILABLE_PLAYERS, 85 AVRCP_STATUS_ADDRESSED_PLAYER_CHANGED, // Valid for command: Register Notification 86 AVRCP_STATUS_RESERVED // 0x17 - 0xFF 87 } avrcp_status_code_t; 88 89 typedef enum { 90 AVRCP_SINGLE_PACKET= 0, 91 AVRCP_START_PACKET , 92 AVRCP_CONTINUE_PACKET , 93 AVRCP_END_PACKET 94 } avrcp_packet_type_t; 95 96 typedef enum { 97 AVRCP_COMMAND_FRAME = 0, 98 AVRCP_RESPONSE_FRAME 99 } avrcp_frame_type_t; 100 101 102 typedef enum { 103 AVRCP_CAPABILITY_ID_COMPANY = 0x02, 104 AVRCP_CAPABILITY_ID_EVENT = 0x03 105 } avrcp_capability_id_t; 106 107 #define AVRCP_BROWSING_MAX_NUM_ATTR_IDS 8 108 typedef enum { 109 AVRCP_MEDIA_ATTR_ALL = 0x00000000, 110 AVRCP_MEDIA_ATTR_TITLE, 111 AVRCP_MEDIA_ATTR_ARTIST, 112 AVRCP_MEDIA_ATTR_ALBUM, 113 AVRCP_MEDIA_ATTR_TRACK, 114 AVRCP_MEDIA_ATTR_TOTAL_NUM_ITEMS, 115 AVRCP_MEDIA_ATTR_GENRE, 116 AVRCP_MEDIA_ATTR_SONG_LENGTH_MS, 117 AVRCP_MEDIA_ATTR_DEFAULT_COVER_ART, 118 AVRCP_MEDIA_ATTR_NONE = 0xFFFFFFFF 119 } avrcp_media_attribute_id_t; 120 121 typedef enum { 122 AVRCP_PDU_ID_GET_CAPABILITIES = 0x10, 123 AVRCP_PDU_ID_GetCurrentPlayerApplicationSettingValue = 0x13, 124 AVRCP_PDU_ID_SetPlayerApplicationSettingValue = 0x14, 125 AVRCP_PDU_ID_GET_ELEMENT_ATTRIBUTES = 0x20, 126 AVRCP_PDU_ID_GET_PLAY_STATUS = 0x30, 127 AVRCP_PDU_ID_REGISTER_NOTIFICATION = 0x31, 128 AVRCP_PDU_ID_REQUEST_CONTINUING_RESPONSE = 0x40, 129 AVRCP_PDU_ID_REQUEST_ABORT_CONTINUING_RESPONSE = 0x41, 130 AVRCP_PDU_ID_SET_ABSOLUTE_VOLUME = 0x50, 131 AVRCP_PDU_ID_SET_ADDRESSED_PLAYER = 0x60, 132 AVRCP_PDU_ID_SET_BROWSED_PLAYER = 0x70, 133 AVRCP_PDU_ID_GET_FOLDER_ITEMS = 0x71, 134 AVRCP_PDU_ID_CHANGE_PATH = 0x72, 135 AVRCP_PDU_ID_GET_ITEM_ATTRIBUTES = 0x73, 136 AVRCP_PDU_ID_PLAY_ITEM = 0x74, 137 AVRCP_PDU_ID_GET_TOTAL_NUMBER_OF_ITEMS = 0x75, 138 AVRCP_PDU_ID_SEARCH = 0x80, 139 AVRCP_PDU_ID_ADD_TO_NOW_PLAYING = 0x90, 140 AVRCP_PDU_ID_GENERAL_REJECT = 0xA0, 141 142 AVRCP_PDU_ID_UNDEFINED = 0xFF 143 } avrcp_pdu_id_t; 144 145 typedef enum { 146 AVRCP_NOTIFICATION_EVENT_PLAYBACK_STATUS_CHANGED = 0x01, // Change in playback status of the current track. 147 AVRCP_NOTIFICATION_EVENT_TRACK_CHANGED = 0x02, // Change of current track 148 AVRCP_NOTIFICATION_EVENT_TRACK_REACHED_END = 0x03, // Reached end of a track 149 AVRCP_NOTIFICATION_EVENT_TRACK_REACHED_START = 0x04, // Reached start of a track 150 AVRCP_NOTIFICATION_EVENT_PLAYBACK_POS_CHANGED = 0x05, // Change in playback position. Returned after the specified playback notification change notification interval 151 AVRCP_NOTIFICATION_EVENT_BATT_STATUS_CHANGED = 0x06, // Change in battery status 152 AVRCP_NOTIFICATION_EVENT_SYSTEM_STATUS_CHANGED = 0x07, // Change in system status 153 AVRCP_NOTIFICATION_EVENT_PLAYER_APPLICATION_SETTING_CHANGED = 0x08, // Change in player application setting 154 AVRCP_NOTIFICATION_EVENT_NOW_PLAYING_CONTENT_CHANGED = 0x09, // The content of the Now Playing list has changed, see 6.9.5. 155 AVRCP_NOTIFICATION_EVENT_AVAILABLE_PLAYERS_CHANGED = 0x0a, // The available players have changed, see 6.9.4. 156 AVRCP_NOTIFICATION_EVENT_ADDRESSED_PLAYER_CHANGED = 0x0b, // The Addressed Player has been changed, see 6.9.2. 157 AVRCP_NOTIFICATION_EVENT_UIDS_CHANGED = 0x0c, // The UIDs have changed, see 6.10.3.3. 158 AVRCP_NOTIFICATION_EVENT_VOLUME_CHANGED = 0x0d // The volume has been changed locally on the TG, see 6.13.3. 159 } avrcp_notification_event_id_t; 160 161 // control command response: accepted, rejected, interim 162 // status command response: not implemented, rejected, in transition, stable 163 // notify command response: not implemented, rejected, changed 164 165 typedef enum { 166 AVRCP_CTYPE_CONTROL = 0, 167 AVRCP_CTYPE_STATUS, 168 AVRCP_CTYPE_SPECIFIC_INQUIRY, 169 AVRCP_CTYPE_NOTIFY, 170 AVRCP_CTYPE_GENERAL_INQUIRY, 171 AVRCP_CTYPE_RESERVED5, 172 AVRCP_CTYPE_RESERVED6, 173 AVRCP_CTYPE_RESERVED7, 174 AVRCP_CTYPE_RESPONSE_NOT_IMPLEMENTED = 8, 175 AVRCP_CTYPE_RESPONSE_ACCEPTED, 176 AVRCP_CTYPE_RESPONSE_REJECTED, 177 AVRCP_CTYPE_RESPONSE_IN_TRANSITION, // target state is in transition. A subsequent STATUS command, may result in the return of a STABLE status 178 AVRCP_CTYPE_RESPONSE_IMPLEMENTED_STABLE, 179 AVRCP_CTYPE_RESPONSE_CHANGED_STABLE, 180 AVRCP_CTYPE_RESPONSE_RESERVED, 181 AVRCP_CTYPE_RESPONSE_INTERIM // target is unable to respond with either ACCEPTED or REJECTED within 100 millisecond 182 } avrcp_command_type_t; 183 184 typedef enum { 185 AVRCP_SUBUNIT_TYPE_MONITOR = 0, 186 AVRCP_SUBUNIT_TYPE_AUDIO = 1, 187 AVRCP_SUBUNIT_TYPE_PRINTER, 188 AVRCP_SUBUNIT_TYPE_DISC, 189 AVRCP_SUBUNIT_TYPE_TAPE_RECORDER_PLAYER, 190 AVRCP_SUBUNIT_TYPE_TUNER, 191 AVRCP_SUBUNIT_TYPE_CA, 192 AVRCP_SUBUNIT_TYPE_CAMERA, 193 AVRCP_SUBUNIT_TYPE_RESERVED, 194 AVRCP_SUBUNIT_TYPE_PANEL = 9, 195 AVRCP_SUBUNIT_TYPE_BULLETIN_BOARD, 196 AVRCP_SUBUNIT_TYPE_CAMERA_STORAGE, 197 AVRCP_SUBUNIT_TYPE_VENDOR_UNIQUE = 0x1C, 198 AVRCP_SUBUNIT_TYPE_RESERVED_FOR_ALL_SUBUNIT_TYPES, 199 AVRCP_SUBUNIT_TYPE_EXTENDED_TO_NEXT_BYTE, // The unit_type field may take value 1E16, which means that the field is extended to the following byte. In that case, an additional byte for extended_unit_type will be added immediately following operand[1]. 200 // Further extension is possible when the value of extended_unit_type is FF16, in which case another byte will be added. 201 AVRCP_SUBUNIT_TYPE_UNIT = 0x1F 202 } avrcp_subunit_type_t; 203 204 typedef enum { 205 AVRCP_SUBUNIT_ID = 0, 206 AVRCP_SUBUNIT_ID_IGNORE = 7 207 } avrcp_subunit_id_t; 208 209 typedef enum { 210 AVRCP_CMD_OPCODE_VENDOR_DEPENDENT = 0x00, 211 // AVRCP_CMD_OPCODE_RESERVE = 0x01, 212 AVRCP_CMD_OPCODE_UNIT_INFO = 0x30, 213 AVRCP_CMD_OPCODE_SUBUNIT_INFO = 0x31, 214 AVRCP_CMD_OPCODE_PASS_THROUGH = 0x7C, 215 // AVRCP_CMD_OPCODE_VERSION = 0xB0, 216 // AVRCP_CMD_OPCODE_POWER = 0xB2, 217 AVRCP_CMD_OPCODE_UNDEFINED = 0xFF 218 } avrcp_command_opcode_t; 219 220 typedef enum { 221 AVRCP_OPERATION_ID_CHANNEL_UP = 0x30, 222 AVRCP_OPERATION_ID_CHANNEL_DOWN = 0x31, 223 AVRCP_OPERATION_ID_SELECT = 0x00, 224 AVRCP_OPERATION_ID_UP = 0x01, 225 AVRCP_OPERATION_ID_DOWN = 0x02, 226 AVRCP_OPERATION_ID_LEFT = 0x03, 227 AVRCP_OPERATION_ID_RIGHT = 0x04, 228 AVRCP_OPERATION_ID_ROOT_MENU = 0x09, 229 230 AVRCP_OPERATION_ID_SKIP = 0x3C, 231 AVRCP_OPERATION_ID_VOLUME_UP = 0x41, 232 AVRCP_OPERATION_ID_VOLUME_DOWN = 0x42, 233 AVRCP_OPERATION_ID_MUTE = 0x43, 234 235 AVRCP_OPERATION_ID_PLAY = 0x44, 236 AVRCP_OPERATION_ID_STOP = 0x45, 237 AVRCP_OPERATION_ID_PAUSE = 0x46, 238 AVRCP_OPERATION_ID_REWIND = 0x48, 239 AVRCP_OPERATION_ID_FAST_FORWARD = 0x49, 240 AVRCP_OPERATION_ID_FORWARD = 0x4B, 241 AVRCP_OPERATION_ID_BACKWARD = 0x4C, 242 AVRCP_OPERATION_ID_UNDEFINED = 0xFF 243 } avrcp_operation_id_t; 244 245 typedef enum{ 246 AVRCP_PLAYBACK_STATUS_STOPPED = 0x00, 247 AVRCP_PLAYBACK_STATUS_PLAYING, 248 AVRCP_PLAYBACK_STATUS_PAUSED, 249 AVRCP_PLAYBACK_STATUS_FWD_SEEK, 250 AVRCP_PLAYBACK_STATUS_REV_SEEK, 251 AVRCP_PLAYBACK_STATUS_ERROR = 0xFF 252 } avrcp_playback_status_t; 253 254 typedef enum{ 255 AVRCP_BATTERY_STATUS_NORMAL = 0x00, // Battery operation is in normal state 256 AVRCP_BATTERY_STATUS_WARNING, // unable to operate soon. Is provided when the battery level is going down. 257 AVRCP_BATTERY_STATUS_CRITICAL, // can not operate any more. Is provided when the battery level is going down. 258 AVRCP_BATTERY_STATUS_EXTERNAL, // Plugged to external power supply 259 AVRCP_BATTERY_STATUS_FULL_CHARGE // when the device is completely charged from the external power supply 260 } avrcp_battery_status_t; 261 262 263 typedef enum { 264 AVCTP_CONNECTION_IDLE, 265 AVCTP_CONNECTION_W4_SDP_QUERY_COMPLETE, 266 AVCTP_CONNECTION_W4_ERTM_CONFIGURATION, 267 AVCTP_CONNECTION_W4_L2CAP_CONNECTED, 268 AVCTP_CONNECTION_OPENED, 269 AVCTP_W2_SEND_PRESS_COMMAND, 270 AVCTP_W2_SEND_RELEASE_COMMAND, 271 AVCTP_W4_STOP, 272 AVCTP_W2_SEND_COMMAND, 273 AVCTP_W2_SEND_RESPONSE, 274 AVCTP_W2_RECEIVE_PRESS_RESPONSE, 275 AVCTP_W2_RECEIVE_RESPONSE, 276 AVCTP_W2_SEND_FRAGMENTED_COMMAND, 277 } avctp_connection_state_t; 278 279 typedef enum { 280 AVRCP_BROWSING_MEDIA_PLAYER_LIST = 0x00, 281 AVRCP_BROWSING_MEDIA_PLAYER_VIRTUAL_FILESYSTEM, 282 AVRCP_BROWSING_SEARCH, 283 AVRCP_BROWSING_NOW_PLAYING 284 } avrcp_browsing_scope_t; 285 286 typedef struct { 287 uint16_t len; 288 uint8_t * value; 289 } avrcp_now_playing_info_item_t; 290 291 typedef struct { 292 uint8_t track_id[8]; 293 uint16_t track_nr; 294 char * title; 295 char * artist; 296 char * album; 297 char * genre; 298 uint32_t song_length_ms; 299 uint32_t song_position_ms; 300 } avrcp_track_t; 301 302 typedef enum { 303 AVRCP_PARSER_GET_ATTRIBUTE_HEADER = 0, // 8 bytes 304 AVRCP_PARSER_GET_ATTRIBUTE_VALUE, 305 AVRCP_PARSER_IGNORE_REST_OF_ATTRIBUTE_VALUE 306 } avrcp_parser_state_t; 307 308 309 #define AVRCP_BROWSING_ITEM_HEADER_LEN 3 310 311 // BROWSING 312 typedef struct { 313 uint16_t l2cap_browsing_cid; 314 315 avctp_connection_state_t state; 316 uint8_t wait_to_send; 317 uint8_t transaction_label; 318 // used for AVCTP fragmentation 319 uint8_t num_packets; 320 uint16_t bytes_to_send; 321 322 uint8_t *ertm_buffer; 323 uint32_t ertm_buffer_size; 324 l2cap_ertm_config_t ertm_config; 325 326 // players 327 uint8_t set_browsed_player_id; 328 uint16_t browsed_player_id; 329 330 avrcp_browsing_scope_t scope; 331 uint8_t folder_uid[8]; // or media element 332 uint16_t uid_counter; 333 334 // get folder item 335 uint8_t get_folder_items; 336 uint32_t start_item; 337 uint32_t end_item; 338 uint32_t attr_bitmap; 339 340 // item attrs 341 uint8_t get_item_attributes; 342 343 // change_path 344 uint8_t change_path; 345 uint8_t direction; 346 347 // search str 348 uint16_t search_str_len; 349 uint8_t search_str[20]; 350 uint8_t search; 351 352 // get_item_attributes 353 uint8_t get_total_nr_items; 354 avrcp_browsing_scope_t get_total_nr_items_scope; 355 356 avrcp_pdu_id_t pdu_id; 357 uint8_t browsing_status; 358 uint16_t num_items; 359 360 avrcp_parser_state_t parser_state; 361 uint8_t parser_attribute_header[AVRCP_BROWSING_ITEM_HEADER_LEN]; 362 uint8_t parser_attribute_header_pos; 363 uint8_t parsed_attribute_value[AVRCP_MAX_ATTRIBUTTE_SIZE]; 364 uint16_t parsed_attribute_value_len; 365 uint16_t parsed_attribute_value_offset; 366 uint8_t parsed_num_attributes; 367 368 // get folder items data 369 uint8_t * attr_list; 370 uint16_t attr_list_size; 371 // command 372 // uint8_t transaction_label; 373 avrcp_command_opcode_t command_opcode; 374 avrcp_command_type_t command_type; 375 avrcp_subunit_type_t subunit_type; 376 avrcp_subunit_id_t subunit_id; 377 avrcp_packet_type_t packet_type; 378 uint8_t cmd_operands[200]; 379 uint8_t cmd_operands_length; 380 } avrcp_browsing_connection_t; 381 // BROWSING END 382 383 typedef struct { 384 btstack_linked_item_t item; 385 bd_addr_t remote_addr; 386 uint16_t l2cap_signaling_cid; 387 uint16_t l2cap_mtu; 388 uint16_t avrcp_cid; 389 390 uint16_t avrcp_browsing_cid; 391 uint16_t browsing_l2cap_psm; 392 uint16_t browsing_version; 393 394 avrcp_browsing_connection_t * browsing_connection; 395 396 avctp_connection_state_t state; 397 uint8_t wait_to_send; 398 399 // PID check 400 uint8_t reject_transport_header; 401 uint8_t transport_header; 402 uint16_t invalid_pid; 403 404 // command 405 uint8_t transaction_label; 406 avrcp_command_opcode_t command_opcode; 407 avrcp_command_type_t command_type; 408 avrcp_subunit_type_t subunit_type; 409 avrcp_subunit_id_t subunit_id; 410 avrcp_packet_type_t packet_type; 411 412 // regular commands 413 uint8_t cmd_operands[20]; 414 uint8_t cmd_operands_length; 415 416 // long/fragmented commands 417 const uint8_t * cmd_operands_fragmented_buffer; 418 uint16_t cmd_operands_fragmented_pos; 419 uint16_t cmd_operands_fragmented_len; 420 421 btstack_timer_source_t press_and_hold_cmd_timer; 422 uint8_t continuous_fast_forward_cmd; 423 uint16_t notifications_enabled; 424 uint16_t notifications_to_register; 425 uint16_t notifications_to_deregister; 426 427 avrcp_subunit_type_t unit_type; 428 uint32_t company_id; 429 avrcp_subunit_type_t subunit_info_type; 430 const uint8_t * subunit_info_data; 431 uint16_t subunit_info_data_size; 432 433 avrcp_now_playing_info_item_t now_playing_info[AVRCP_MEDIA_ATTR_COUNT]; 434 uint8_t track_id[8]; 435 uint32_t song_length_ms; 436 uint32_t song_position_ms; 437 int total_tracks; 438 int track_nr; 439 uint8_t track_selected; 440 uint8_t track_changed; 441 442 avrcp_playback_status_t playback_status; 443 uint8_t playback_status_changed; 444 445 uint8_t playing_content_changed; 446 447 avrcp_battery_status_t battery_status; 448 uint8_t battery_status_changed; 449 uint8_t volume_percentage; 450 uint8_t volume_percentage_changed; 451 uint8_t now_playing_info_response; 452 uint8_t now_playing_info_attr_bitmap; 453 uint8_t abort_continue_response; 454 455 // used for fragmentation 456 avrcp_media_attribute_id_t next_attr_id; 457 458 avrcp_parser_state_t parser_state; 459 uint8_t parser_attribute_header[AVRCP_ATTRIBUTE_HEADER_LEN]; 460 uint8_t parser_attribute_header_pos; 461 462 uint16_t list_size; 463 uint16_t list_offset; 464 uint8_t attribute_value[AVRCP_MAX_ATTRIBUTTE_SIZE]; 465 uint16_t attribute_value_len; 466 uint16_t attribute_value_offset; 467 468 uint32_t attribute_id; 469 470 uint8_t num_attributes; 471 uint8_t num_parsed_attributes; 472 473 uint8_t addressed_player_changed; 474 uint16_t addressed_player_id; 475 uint16_t uid_counter; 476 // PTS requires definition of max num fragments 477 uint8_t max_num_fragments; 478 uint8_t num_received_fragments; 479 } avrcp_connection_t; 480 481 typedef enum { 482 AVRCP_SHUFFLE_MODE_INVALID, 483 AVRCP_SHUFFLE_MODE_OFF, 484 AVRCP_SHUFFLE_MODE_ALL_TRACKS, 485 AVRCP_SHUFFLE_MODE_GROUP 486 } avrcp_shuffle_mode_t; 487 488 typedef enum { 489 AVRCP_REPEAT_MODE_INVALID, 490 AVRCP_REPEAT_MODE_OFF, 491 AVRCP_REPEAT_MODE_SINGLE_TRACK, 492 AVRCP_REPEAT_MODE_ALL_TRACKS, 493 AVRCP_REPEAT_MODE_GROUP 494 } avrcp_repeat_mode_t; 495 496 typedef enum{ 497 AVRCP_CONTROLLER = 0, 498 AVRCP_TARGET 499 } avrcp_role_t; 500 501 typedef enum { 502 RFC2978_CHARSET_MIB_UTF8 = 106 503 } rfc2978_charset_mib_enumid_t; 504 505 typedef struct { 506 avrcp_role_t role; 507 btstack_linked_list_t connections; 508 btstack_packet_handler_t avrcp_callback; 509 btstack_packet_handler_t packet_handler; 510 511 btstack_packet_handler_t browsing_avrcp_callback; 512 btstack_packet_handler_t browsing_packet_handler; 513 514 // SDP query 515 uint8_t parse_sdp_record; 516 uint32_t record_id; 517 uint16_t avrcp_cid; 518 uint16_t avrcp_l2cap_psm; 519 uint16_t avrcp_version; 520 } avrcp_context_t; 521 522 523 const char * avrcp_subunit2str(uint16_t index); 524 const char * avrcp_event2str(uint16_t index); 525 const char * avrcp_operation2str(uint8_t index); 526 const char * avrcp_attribute2str(uint8_t index); 527 const char * avrcp_play_status2str(uint8_t index); 528 const char * avrcp_ctype2str(uint8_t index); 529 const char * avrcp_repeat2str(uint8_t index); 530 const char * avrcp_shuffle2str(uint8_t index); 531 532 void avrcp_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size, avrcp_context_t * context); 533 534 void avrcp_create_sdp_record(uint8_t controller, uint8_t * service, uint32_t service_record_handle, uint8_t browsing, uint16_t supported_features, const char * service_name, const char * service_provider_name); 535 uint8_t avrcp_connect(bd_addr_t bd_addr, avrcp_context_t * context, uint16_t * avrcp_cid); 536 void avrcp_emit_connection_established(btstack_packet_handler_t callback, uint16_t avrcp_cid, bd_addr_t addr, uint8_t status); 537 void avrcp_emit_connection_closed(btstack_packet_handler_t callback, uint16_t avrcp_cid); 538 539 uint8_t avrcp_cmd_opcode(uint8_t *packet, uint16_t size); 540 avrcp_connection_t * get_avrcp_connection_for_l2cap_signaling_cid(uint16_t l2cap_cid, avrcp_context_t * context); 541 avrcp_connection_t * get_avrcp_connection_for_avrcp_cid(uint16_t avrcp_cid, avrcp_context_t * context); 542 avrcp_connection_t * get_avrcp_connection_for_bd_addr(bd_addr_t addr, avrcp_context_t * context); 543 void avrcp_request_can_send_now(avrcp_connection_t * connection, uint16_t l2cap_cid); 544 uint16_t avrcp_get_next_cid(void); 545 546 // SDP query 547 void avrcp_handle_sdp_client_query_result(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 548 549 #if defined __cplusplus 550 } 551 #endif 552 553 #endif // __AVRCP_H 554