/* * Copyright (C) 2016 BlueKitchen GmbH * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the copyright holders nor the names of * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * 4. Any redistribution, use, or modification is done solely for * personal benefit and not for any commercial purpose or for * monetary gain. * * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * Please inquire about commercial licensing options at * contact@bluekitchen-gmbh.com * */ /* * avrcp.h * * Audio/Video Remote Control Profile * */ #ifndef AVRCP_H #define AVRCP_H #include #include "btstack_run_loop.h" #include "btstack_linked_list.h" #include "l2cap.h" #if defined __cplusplus extern "C" { #endif #define PSM_AVCTP_BROWSING 0x001b #define AVRCP_BROWSING_ITEM_HEADER_LEN 3 #define AVRCP_BROWSING_MAX_NUM_ATTR_IDS 8 #define BT_SIG_COMPANY_ID 0x001958 #define AVRCP_MEDIA_ATTR_COUNT 7 #define AVRCP_MAX_ATTRIBUTTE_SIZE 100 #define AVRCP_ATTRIBUTE_HEADER_LEN 8 #define AVRCP_MAX_FOLDER_NAME_SIZE 20 #define AVRCP_NO_TRACK_SELECTED_PLAYBACK_POSITION_CHANGED 0xFFFFFFFF #define AVRCP_FEATURE_MASK_CATEGORY_PLAYER_OR_RECORDER 0x0001u #define AVRCP_FEATURE_MASK_CATEGORY_MONITOR_OR_AMPLIFIER 0x0002u #define AVRCP_FEATURE_MASK_CATEGORY_TUNER 0x0004u #define AVRCP_FEATURE_MASK_CATEGORY_MENU 0x0008u #define AVRCP_FEATURE_MASK_PLAYER_APPLICATION_SETTINGS 0x0010u // AVRCP_FEATURE_MASK_CATEGORY_PLAYER_OR_RECORDER must be 1 for this feature to be set #define AVRCP_FEATURE_MASK_GROUP_NAVIGATION 0x0020u // AVRCP_FEATURE_MASK_CATEGORY_PLAYER_OR_RECORDER must be 1 for this feature to be set #define AVRCP_FEATURE_MASK_BROWSING 0x0040u #define AVRCP_FEATURE_MASK_MULTIPLE_MEDIA_PLAYE_APPLICATIONS 0x0080u typedef enum { AVRCP_STATUS_INVALID_COMMAND = 0, // sent if TG received a PDU that it did not understand. 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. AVRCP_STATUS_SPECIFIED_PARAMETER_NOT_FOUND, // sent if the parameter ID is understood, but content is wrong or corrupted. AVRCP_STATUS_INTERNAL_ERROR, // sent if there are error conditions not covered by a more specific error code. AVRCP_STATUS_SUCCESS, // sent if the operation was successful. AVRCP_STATUS_UID_CHANGED, // sent if the UIDs on the device have changed. AVRCP_STATUS_RESERVED_6, AVRCP_STATUS_INVALID_DIRECTION, // The Direction parameter is invalid. Valid for command: Change Path AVRCP_STATUS_NOT_A_DIRECTORY, // The UID provided does not refer to a folder item. Valid for command: Change Path AVRCP_STATUS_DOES_NOT_EXIST, // The UID provided does not refer to any currently valid. Valid for command: Change Path, PlayItem, AddToNowPlaying, GetItemAttributes AVRCP_STATUS_INVALID_SCOPE, // The scope parameter is invalid. Valid for command: GetFolderItems, PlayItem, AddToNowPlayer, GetItemAttributes, AVRCP_STATUS_RANGE_OUT_OF_BOUNDS, // The start of range provided is not valid. Valid for command: GetFolderItems 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 AVRCP_STATUS_MEDIA_IN_USE, // The media is not able to be used for this operation at this time. Valid for command: PlayItem, AddToNowPlaying AVRCP_STATUS_NOW_PLAYING_LIST_FULL, // No more items can be added to the Now Playing List. Valid for command: AddToNowPlaying AVRCP_STATUS_SEARCH_NOT_SUPPORTED, // The Browsed Media Player does not support search. Valid for command: Search AVRCP_STATUS_SEARCH_IN_PROGRESS, // A search operation is already in progress. Valid for command: Search AVRCP_STATUS_INVALID_PLAYER_ID, // The specified Player Id does not refer to a valid player. Valid for command: SetAddressedPlayer, SetBrowsedPlayer AVRCP_STATUS_PLAYER_NOT_BROWSABLE, // The Player Id supplied refers to a Media Player which does not support browsing. Valid for command: SetBrowsedPlayer 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 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 AVRCP_STATUS_NO_AVAILABLE_PLAYERS, AVRCP_STATUS_ADDRESSED_PLAYER_CHANGED, // Valid for command: Register Notification AVRCP_STATUS_RESERVED // 0x17 - 0xFF } avrcp_status_code_t; typedef enum { AVRCP_SINGLE_PACKET= 0, AVRCP_START_PACKET , AVRCP_CONTINUE_PACKET , AVRCP_END_PACKET } avrcp_packet_type_t; typedef enum { AVRCP_COMMAND_FRAME = 0, AVRCP_RESPONSE_FRAME } avrcp_frame_type_t; typedef enum { AVRCP_CAPABILITY_ID_COMPANY = 0x02, AVRCP_CAPABILITY_ID_EVENT = 0x03 } avrcp_capability_id_t; typedef enum { AVRCP_MEDIA_ATTR_ALL = 0x0000, AVRCP_MEDIA_ATTR_TITLE, AVRCP_MEDIA_ATTR_ARTIST, AVRCP_MEDIA_ATTR_ALBUM, AVRCP_MEDIA_ATTR_TRACK, AVRCP_MEDIA_ATTR_TOTAL_NUM_ITEMS, AVRCP_MEDIA_ATTR_GENRE, AVRCP_MEDIA_ATTR_SONG_LENGTH_MS, AVRCP_MEDIA_ATTR_DEFAULT_COVER_ART, AVRCP_MEDIA_ATTR_RESERVED = 0x0009, AVRCP_MEDIA_ATTR_NONE = 0x7FFF } avrcp_media_attribute_id_t; typedef enum { AVRCP_PDU_ID_GET_CAPABILITIES = 0x10, AVRCP_PDU_ID_GET_CURRENT_PLAYER_APPLICATION_SETTING_VALUE = 0x13, AVRCP_PDU_ID_SET_PLAYER_APPLICATION_SETTING_VALUE = 0x14, AVRCP_PDU_ID_GET_ELEMENT_ATTRIBUTES = 0x20, AVRCP_PDU_ID_GET_PLAY_STATUS = 0x30, AVRCP_PDU_ID_REGISTER_NOTIFICATION = 0x31, AVRCP_PDU_ID_REQUEST_CONTINUING_RESPONSE = 0x40, AVRCP_PDU_ID_REQUEST_ABORT_CONTINUING_RESPONSE = 0x41, AVRCP_PDU_ID_SET_ABSOLUTE_VOLUME = 0x50, AVRCP_PDU_ID_SET_ADDRESSED_PLAYER = 0x60, AVRCP_PDU_ID_SET_BROWSED_PLAYER = 0x70, AVRCP_PDU_ID_GET_FOLDER_ITEMS = 0x71, AVRCP_PDU_ID_CHANGE_PATH = 0x72, AVRCP_PDU_ID_GET_ITEM_ATTRIBUTES = 0x73, AVRCP_PDU_ID_PLAY_ITEM = 0x74, AVRCP_PDU_ID_GET_TOTAL_NUMBER_OF_ITEMS = 0x75, AVRCP_PDU_ID_SEARCH = 0x80, AVRCP_PDU_ID_ADD_TO_NOW_PLAYING = 0x90, AVRCP_PDU_ID_GENERAL_REJECT = 0xA0, AVRCP_PDU_ID_UNDEFINED = 0xFF } avrcp_pdu_id_t; typedef enum { AVRCP_NOTIFICATION_EVENT_PLAYBACK_STATUS_CHANGED = 0x01, // Change in playback status of the current track. AVRCP_NOTIFICATION_EVENT_TRACK_CHANGED = 0x02, // Change of current track AVRCP_NOTIFICATION_EVENT_TRACK_REACHED_END = 0x03, // Reached end of a track AVRCP_NOTIFICATION_EVENT_TRACK_REACHED_START = 0x04, // Reached start of a track AVRCP_NOTIFICATION_EVENT_PLAYBACK_POS_CHANGED = 0x05, // Change in playback position. Returned after the specified playback notification change notification interval AVRCP_NOTIFICATION_EVENT_BATT_STATUS_CHANGED = 0x06, // Change in battery status AVRCP_NOTIFICATION_EVENT_SYSTEM_STATUS_CHANGED = 0x07, // Change in system status AVRCP_NOTIFICATION_EVENT_PLAYER_APPLICATION_SETTING_CHANGED = 0x08, // Change in player application setting AVRCP_NOTIFICATION_EVENT_NOW_PLAYING_CONTENT_CHANGED = 0x09, // The content of the Now Playing list has changed, see 6.9.5. AVRCP_NOTIFICATION_EVENT_AVAILABLE_PLAYERS_CHANGED = 0x0a, // The available players have changed, see 6.9.4. AVRCP_NOTIFICATION_EVENT_ADDRESSED_PLAYER_CHANGED = 0x0b, // The Addressed Player has been changed, see 6.9.2. AVRCP_NOTIFICATION_EVENT_UIDS_CHANGED = 0x0c, // The UIDs have changed, see 6.10.3.3. AVRCP_NOTIFICATION_EVENT_VOLUME_CHANGED = 0x0d, // The volume has been changed locally on the TG, see 6.13.3. AVRCP_NOTIFICATION_EVENT_MAX_VALUE = 0x0e } avrcp_notification_event_id_t; // control command response: accepted, rejected, interim // status command response: not implemented, rejected, in transition, stable // notify command response: not implemented, rejected, changed typedef enum { AVRCP_CTYPE_CONTROL = 0, AVRCP_CTYPE_STATUS, AVRCP_CTYPE_SPECIFIC_INQUIRY, AVRCP_CTYPE_NOTIFY, AVRCP_CTYPE_GENERAL_INQUIRY, AVRCP_CTYPE_RESERVED5, AVRCP_CTYPE_RESERVED6, AVRCP_CTYPE_RESERVED7, AVRCP_CTYPE_RESPONSE_NOT_IMPLEMENTED = 8, AVRCP_CTYPE_RESPONSE_ACCEPTED, AVRCP_CTYPE_RESPONSE_REJECTED, AVRCP_CTYPE_RESPONSE_IN_TRANSITION, // target state is in transition. A subsequent STATUS command, may result in the return of a STABLE status AVRCP_CTYPE_RESPONSE_IMPLEMENTED_STABLE, AVRCP_CTYPE_RESPONSE_CHANGED_STABLE, AVRCP_CTYPE_RESPONSE_RESERVED, AVRCP_CTYPE_RESPONSE_INTERIM // target is unable to respond with either ACCEPTED or REJECTED within 100 millisecond } avrcp_command_type_t; typedef enum { AVRCP_SUBUNIT_TYPE_MONITOR = 0, AVRCP_SUBUNIT_TYPE_AUDIO = 1, AVRCP_SUBUNIT_TYPE_PRINTER, AVRCP_SUBUNIT_TYPE_DISC, AVRCP_SUBUNIT_TYPE_TAPE_RECORDER_PLAYER, AVRCP_SUBUNIT_TYPE_TUNER, AVRCP_SUBUNIT_TYPE_CA, AVRCP_SUBUNIT_TYPE_CAMERA, AVRCP_SUBUNIT_TYPE_RESERVED, AVRCP_SUBUNIT_TYPE_PANEL = 9, AVRCP_SUBUNIT_TYPE_BULLETIN_BOARD, AVRCP_SUBUNIT_TYPE_CAMERA_STORAGE, AVRCP_SUBUNIT_TYPE_VENDOR_UNIQUE = 0x1C, AVRCP_SUBUNIT_TYPE_RESERVED_FOR_ALL_SUBUNIT_TYPES, 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]. // Further extension is possible when the value of extended_unit_type is FF16, in which case another byte will be added. AVRCP_SUBUNIT_TYPE_UNIT = 0x1F } avrcp_subunit_type_t; typedef enum { AVRCP_SUBUNIT_ID = 0, AVRCP_SUBUNIT_ID_IGNORE = 7 } avrcp_subunit_id_t; typedef enum { AVRCP_CMD_OPCODE_VENDOR_DEPENDENT = 0x00, // AVRCP_CMD_OPCODE_RESERVE = 0x01, AVRCP_CMD_OPCODE_UNIT_INFO = 0x30, AVRCP_CMD_OPCODE_SUBUNIT_INFO = 0x31, AVRCP_CMD_OPCODE_PASS_THROUGH = 0x7C, // AVRCP_CMD_OPCODE_VERSION = 0xB0, // AVRCP_CMD_OPCODE_POWER = 0xB2, AVRCP_CMD_OPCODE_UNDEFINED = 0xFF } avrcp_command_opcode_t; typedef enum { AVRCP_OPERATION_ID_CHANNEL_UP = 0x30, AVRCP_OPERATION_ID_CHANNEL_DOWN = 0x31, AVRCP_OPERATION_ID_SELECT = 0x00, AVRCP_OPERATION_ID_UP = 0x01, AVRCP_OPERATION_ID_DOWN = 0x02, AVRCP_OPERATION_ID_LEFT = 0x03, AVRCP_OPERATION_ID_RIGHT = 0x04, AVRCP_OPERATION_ID_ROOT_MENU = 0x09, AVRCP_OPERATION_ID_SKIP = 0x3C, AVRCP_OPERATION_ID_VOLUME_UP = 0x41, AVRCP_OPERATION_ID_VOLUME_DOWN = 0x42, AVRCP_OPERATION_ID_MUTE = 0x43, AVRCP_OPERATION_ID_PLAY = 0x44, AVRCP_OPERATION_ID_STOP = 0x45, AVRCP_OPERATION_ID_PAUSE = 0x46, AVRCP_OPERATION_ID_REWIND = 0x48, AVRCP_OPERATION_ID_FAST_FORWARD = 0x49, AVRCP_OPERATION_ID_FORWARD = 0x4B, AVRCP_OPERATION_ID_BACKWARD = 0x4C, AVRCP_OPERATION_ID_UNDEFINED = 0xFF } avrcp_operation_id_t; typedef enum{ AVRCP_PLAYBACK_STATUS_STOPPED = 0x00, AVRCP_PLAYBACK_STATUS_PLAYING, AVRCP_PLAYBACK_STATUS_PAUSED, AVRCP_PLAYBACK_STATUS_FWD_SEEK, AVRCP_PLAYBACK_STATUS_REV_SEEK, AVRCP_PLAYBACK_STATUS_ERROR = 0xFF } avrcp_playback_status_t; typedef enum { AVRCP_BATTERY_STATUS_NORMAL = 0x00, // Battery operation is in normal state AVRCP_BATTERY_STATUS_WARNING, // unable to operate soon. Is provided when the battery level is going down. AVRCP_BATTERY_STATUS_CRITICAL, // can not operate any more. Is provided when the battery level is going down. AVRCP_BATTERY_STATUS_EXTERNAL, // Plugged to external power supply AVRCP_BATTERY_STATUS_FULL_CHARGE // when the device is completely charged from the external power supply } avrcp_battery_status_t; typedef enum { AVRCP_SYSTEM_STATUS_POWER_ON = 0x00, AVRCP_SYSTEM_STATUS_POWER_OFF, AVRCP_SYSTEM_STATUS_UNPLUGGED } avrcp_system_status_t; typedef enum { AVRCP_PLAYER_APPLICATION_SETTING_ATTRIBUTE_ID_ILLEGAL = 0x00, // ValueIDs with descriptions: AVRCP_PLAYER_APPLICATION_SETTING_ATTRIBUTE_ID_EQUALIZER_STATUS, // 1 - off, 2 - on AVRCP_PLAYER_APPLICATION_SETTING_ATTRIBUTE_ID_REPEAT_MODE_STATUS, // 1 - off, 2 - single track repeat, 3 - all tracks repeat, 4 - group repeat AVRCP_PLAYER_APPLICATION_SETTING_ATTRIBUTE_ID_SHUFFLE_STATUS, // 1 - off, 2 - all tracks shuffle , 3 - group shuffle AVRCP_PLAYER_APPLICATION_SETTING_ATTRIBUTE_ID_SCAN_STATUS // 1 - off, 2 - all tracks scan , 3 - group scan } avrcp_player_application_setting_attribute_id_t; typedef enum { AVCTP_CONNECTION_IDLE, AVCTP_CONNECTION_W2_SEND_SDP_QUERY, AVCTP_CONNECTION_W4_SDP_QUERY_COMPLETE, AVCTP_CONNECTION_W4_ERTM_CONFIGURATION, AVCTP_CONNECTION_W4_L2CAP_CONNECTED, AVCTP_CONNECTION_W2_L2CAP_RETRY, AVCTP_CONNECTION_OPENED, AVCTP_W2_SEND_PRESS_COMMAND, AVCTP_W2_SEND_RELEASE_COMMAND, AVCTP_W4_STOP, AVCTP_W2_SEND_COMMAND, AVCTP_W2_SEND_RESPONSE, AVCTP_W2_RECEIVE_PRESS_RESPONSE, AVCTP_W2_RECEIVE_RESPONSE, AVCTP_W2_SEND_FRAGMENTED_COMMAND, } avctp_connection_state_t; typedef struct { uint16_t len; uint8_t * value; } avrcp_now_playing_info_item_t; typedef struct { uint8_t track_id[8]; uint16_t track_nr; char * title; char * artist; char * album; char * genre; uint32_t song_length_ms; uint32_t song_position_ms; } avrcp_track_t; typedef enum { AVRCP_PARSER_GET_ATTRIBUTE_HEADER = 0, // 8 bytes AVRCP_PARSER_GET_ATTRIBUTE_VALUE, AVRCP_PARSER_IGNORE_REST_OF_ATTRIBUTE_VALUE } avrcp_parser_state_t; typedef enum{ AVRCP_CONTROLLER = 0, AVRCP_TARGET } avrcp_role_t; typedef enum { AVRCP_SHUFFLE_MODE_INVALID, AVRCP_SHUFFLE_MODE_OFF, AVRCP_SHUFFLE_MODE_ALL_TRACKS, AVRCP_SHUFFLE_MODE_GROUP } avrcp_shuffle_mode_t; typedef enum { AVRCP_REPEAT_MODE_INVALID, AVRCP_REPEAT_MODE_OFF, AVRCP_REPEAT_MODE_SINGLE_TRACK, AVRCP_REPEAT_MODE_ALL_TRACKS, AVRCP_REPEAT_MODE_GROUP } avrcp_repeat_mode_t; typedef enum { RFC2978_CHARSET_MIB_UTF8 = 106 } rfc2978_charset_mib_enumid_t; typedef enum { AVRCP_BROWSING_MEDIA_PLAYER_LIST = 0x00, AVRCP_BROWSING_MEDIA_PLAYER_VIRTUAL_FILESYSTEM, AVRCP_BROWSING_SEARCH, AVRCP_BROWSING_NOW_PLAYING } avrcp_browsing_scope_t; // BROWSING typedef struct { uint16_t l2cap_browsing_cid; avctp_connection_state_t state; bool wait_to_send; uint8_t transaction_label; // used for AVCTP fragmentation uint8_t num_packets; uint16_t bytes_to_send; uint8_t *ertm_buffer; uint32_t ertm_buffer_size; l2cap_ertm_config_t ertm_config; // players uint8_t set_browsed_player_id; uint16_t browsed_player_id; avrcp_browsing_scope_t scope; uint8_t folder_uid[8]; // or media element uint16_t uid_counter; // get folder item uint8_t get_folder_items; uint32_t start_item; uint32_t end_item; uint32_t attr_bitmap; // item attrs uint8_t get_item_attributes; // change_path uint8_t change_path; uint8_t direction; // search str uint16_t search_str_len; uint8_t search_str[20]; uint8_t search; // get_item_attributes uint8_t get_total_nr_items; avrcp_browsing_scope_t get_total_nr_items_scope; avrcp_pdu_id_t pdu_id; uint8_t browsing_status; uint16_t num_items; avrcp_parser_state_t parser_state; uint8_t parser_attribute_header[AVRCP_BROWSING_ITEM_HEADER_LEN]; uint8_t parser_attribute_header_pos; uint8_t parsed_attribute_value[AVRCP_MAX_ATTRIBUTTE_SIZE]; uint16_t parsed_attribute_value_len; uint16_t parsed_attribute_value_offset; uint8_t parsed_num_attributes; // get folder items data uint8_t * attr_list; uint16_t attr_list_size; // command // uint8_t transaction_label; avrcp_command_opcode_t command_opcode; avrcp_command_type_t command_type; avrcp_subunit_type_t subunit_type; avrcp_subunit_id_t subunit_id; avrcp_packet_type_t packet_type; uint8_t cmd_operands[200]; uint8_t cmd_operands_length; bool incoming_declined; } avrcp_browsing_connection_t; typedef struct { btstack_linked_item_t item; avrcp_role_t role; bd_addr_t remote_addr; uint16_t avrcp_l2cap_psm; uint16_t l2cap_signaling_cid; uint16_t l2cap_mtu; uint16_t avrcp_cid; hci_con_handle_t con_handle; bool incoming_declined; uint16_t avrcp_browsing_cid; uint16_t browsing_l2cap_psm; uint16_t browsing_version; avrcp_browsing_connection_t * browsing_connection; avctp_connection_state_t state; bool wait_to_send; // PID check uint8_t reject_transport_header; uint8_t transport_header; uint16_t invalid_pid; // transaction id uint8_t transaction_id_counter; // limit number of pending commands to transaction id window size uint8_t last_confirmed_transaction_id; // command uint8_t transaction_id; avrcp_command_opcode_t command_opcode; avrcp_command_type_t command_type; avrcp_subunit_type_t subunit_type; avrcp_subunit_id_t subunit_id; avrcp_packet_type_t packet_type; // regular commands uint8_t cmd_operands[20]; uint8_t cmd_operands_length; // long/fragmented commands const uint8_t * cmd_operands_fragmented_buffer; uint16_t cmd_operands_fragmented_pos; uint16_t cmd_operands_fragmented_len; btstack_timer_source_t retry_timer; btstack_timer_source_t press_and_hold_cmd_timer; uint8_t continuous_fast_forward_cmd; uint16_t notifications_enabled; uint16_t notifications_to_register; uint16_t notifications_to_deregister; uint8_t notifications_transaction_label[AVRCP_NOTIFICATION_EVENT_MAX_VALUE+1]; avrcp_subunit_type_t unit_type; uint32_t company_id; avrcp_subunit_type_t subunit_info_type; const uint8_t * subunit_info_data; uint16_t subunit_info_data_size; avrcp_now_playing_info_item_t now_playing_info[AVRCP_MEDIA_ATTR_COUNT]; uint8_t track_id[8]; uint32_t song_length_ms; uint32_t song_position_ms; int total_tracks; int track_nr; uint8_t track_selected; uint8_t track_changed; avrcp_playback_status_t playback_status; uint8_t playback_status_changed; uint8_t playing_content_changed; avrcp_battery_status_t battery_status; uint8_t battery_status_changed; uint8_t volume_percentage; uint8_t notify_volume_percentage_changed; uint8_t now_playing_info_response; uint8_t now_playing_info_attr_bitmap; uint8_t abort_continue_response; // used for fragmentation avrcp_media_attribute_id_t next_attr_id; avrcp_parser_state_t parser_state; uint8_t parser_attribute_header[AVRCP_ATTRIBUTE_HEADER_LEN]; uint8_t parser_attribute_header_pos; uint16_t list_size; uint16_t list_offset; uint8_t attribute_value[AVRCP_MAX_ATTRIBUTTE_SIZE]; uint16_t attribute_value_len; uint16_t attribute_value_offset; uint32_t attribute_id; uint8_t num_attributes; uint8_t num_parsed_attributes; uint8_t addressed_player_changed; uint16_t addressed_player_id; uint16_t uid_counter; // PTS requires definition of max num fragments uint8_t max_num_fragments; uint8_t num_received_fragments; uint8_t accept_response; } avrcp_connection_t; typedef struct { avrcp_role_t role; btstack_packet_handler_t avrcp_callback; btstack_packet_handler_t packet_handler; bool (*set_addressed_player_callback)(uint16_t player_id); btstack_packet_handler_t browsing_avrcp_callback; btstack_packet_handler_t browsing_packet_handler; } avrcp_context_t; const char * avrcp_subunit2str(uint16_t index); const char * avrcp_event2str(uint16_t index); const char * avrcp_operation2str(uint8_t index); const char * avrcp_attribute2str(uint8_t index); const char * avrcp_play_status2str(uint8_t index); const char * avrcp_ctype2str(uint8_t index); const char * avrcp_repeat2str(uint8_t index); const char * avrcp_shuffle2str(uint8_t index); void avrcp_register_controller_packet_handler(btstack_packet_handler_t avrcp_controller_packet_handler); void avrcp_register_target_packet_handler(btstack_packet_handler_t avrcp_target_packet_handler); uint8_t avrcp_cmd_opcode(uint8_t *packet, uint16_t size); avrcp_connection_t * avrcp_get_connection_for_l2cap_signaling_cid_for_role(avrcp_role_t role, uint16_t l2cap_cid); avrcp_connection_t * avrcp_get_connection_for_avrcp_cid_for_role(avrcp_role_t role, uint16_t avrcp_cid); avrcp_connection_t * avrcp_get_connection_for_bd_addr_for_role(avrcp_role_t role, bd_addr_t addr); avrcp_connection_t * avrcp_get_connection_for_browsing_cid_for_role(avrcp_role_t role, uint16_t browsing_cid); avrcp_connection_t * avrcp_get_connection_for_browsing_l2cap_cid_for_role(avrcp_role_t role, uint16_t browsing_l2cap_cid); avrcp_browsing_connection_t * avrcp_get_browsing_connection_for_l2cap_cid_for_role(avrcp_role_t role, uint16_t l2cap_cid); void avrcp_request_can_send_now(avrcp_connection_t * connection, uint16_t l2cap_cid); uint16_t avrcp_get_next_cid(avrcp_role_t role); btstack_linked_list_t avrcp_get_connections(void); uint16_t avrcp_sdp_query_browsing_l2cap_psm(void); void avrcp_handle_sdp_client_query_attribute_value(uint8_t *packet); avrcp_connection_t * get_avrcp_connection_for_browsing_cid_for_role(avrcp_role_t role, uint16_t browsing_cid); avrcp_connection_t * get_avrcp_connection_for_browsing_l2cap_cid_for_role(avrcp_role_t role, uint16_t browsing_l2cap_cid); avrcp_browsing_connection_t * get_avrcp_browsing_connection_for_l2cap_cid_for_role(avrcp_role_t role, uint16_t l2cap_cid); // SDP query 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); /* API_START */ /** * @brief Set up AVRCP service */ void avrcp_init(void); /** * @brief Register callback for the AVRCP Controller client. * @param callback */ void avrcp_register_packet_handler(btstack_packet_handler_t callback); /** * @brief Connect to AVRCP service on a remote device, emits AVRCP_SUBEVENT_CONNECTION_ESTABLISHED with status * @param remote_addr * @param avrcp_cid outgoing parameter, valid if status == ERROR_CODE_SUCCESS * @returns status */ uint8_t avrcp_connect(bd_addr_t remote_addr, uint16_t * avrcp_cid); /** * @brief Disconnect from AVRCP service * @param avrcp_cid * @returns status */ uint8_t avrcp_disconnect(uint16_t avrcp_cid); /** * @brief De-Init AVRCP */ void avrcp_deinit(void); /* API_END */ #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION void avrcp_init_fuzz(void); void avrcp_packet_handler_fuzz(uint8_t *packet, uint16_t size); #endif #if defined __cplusplus } #endif #endif // AVRCP_H