/** @file * @brief Public APIs for Bluetooth Telephone Bearer Service. * * Copyright (c) 2020 Bose Corporation * Copyright (c) 2021 Nordic Semiconductor ASA * * SPDX-License-Identifier: Apache-2.0 */ #ifndef ZEPHYR_INCLUDE_BLUETOOTH_AUDIO_TBS_H_ #define ZEPHYR_INCLUDE_BLUETOOTH_AUDIO_TBS_H_ #include #include #include /* Call States */ #define BT_TBS_CALL_STATE_INCOMING 0x00 #define BT_TBS_CALL_STATE_DIALING 0x01 #define BT_TBS_CALL_STATE_ALERTING 0x02 #define BT_TBS_CALL_STATE_ACTIVE 0x03 #define BT_TBS_CALL_STATE_LOCALLY_HELD 0x04 #define BT_TBS_CALL_STATE_REMOTELY_HELD 0x05 #define BT_TBS_CALL_STATE_LOCALLY_AND_REMOTELY_HELD 0x06 /* Terminate Reason */ #define BT_TBS_REASON_BAD_REMOTE_URI 0x00 #define BT_TBS_REASON_CALL_FAILED 0x01 #define BT_TBS_REASON_REMOTE_ENDED_CALL 0x02 #define BT_TBS_REASON_SERVER_ENDED_CALL 0x03 #define BT_TBS_REASON_LINE_BUSY 0x04 #define BT_TBS_REASON_NETWORK_CONGESTED 0x05 #define BT_TBS_REASON_CLIENT_TERMINATED 0x06 #define BT_TBS_REASON_UNSPECIFIED 0x07 /* Application error codes */ #define BT_TBS_RESULT_CODE_SUCCESS 0x00 #define BT_TBS_RESULT_CODE_OPCODE_NOT_SUPPORTED 0x01 #define BT_TBS_RESULT_CODE_OPERATION_NOT_POSSIBLE 0x02 #define BT_TBS_RESULT_CODE_INVALID_CALL_INDEX 0x03 #define BT_TBS_RESULT_CODE_STATE_MISMATCH 0x04 #define BT_TBS_RESULT_CODE_OUT_OF_RESOURCES 0x05 #define BT_TBS_RESULT_CODE_INVALID_URI 0x06 #define BT_TBS_FEATURE_HOLD BIT(0) #define BT_TBS_FEATURE_JOIN BIT(1) #define BT_TBS_CALL_FLAG_SET_INCOMING(flag) (flag &= ~BIT(0)) #define BT_TBS_CALL_FLAG_SET_OUTGOING(flag) (flag |= BIT(0)) #define BT_TBS_SIGNAL_STRENGTH_NO_SERVICE 0 #define BT_TBS_SIGNAL_STRENGTH_MAX 100 #define BT_TBS_SIGNAL_STRENGTH_UNKNOWN 255 /* Bearer Technology */ #define BT_TBS_TECHNOLOGY_3G 0x01 #define BT_TBS_TECHNOLOGY_4G 0x02 #define BT_TBS_TECHNOLOGY_LTE 0x03 #define BT_TBS_TECHNOLOGY_WIFI 0x04 #define BT_TBS_TECHNOLOGY_5G 0x05 #define BT_TBS_TECHNOLOGY_GSM 0x06 #define BT_TBS_TECHNOLOGY_CDMA 0x07 #define BT_TBS_TECHNOLOGY_2G 0x08 #define BT_TBS_TECHNOLOGY_WCDMA 0x09 #define BT_TBS_TECHNOLOGY_IP 0x0a /** * @brief The GTBS index denotes whenever a callback is from a * Generic Telephone Bearer Service (GTBS) instance, or * whenever the client should perform on action on the GTBS instance of the * server, rather than any of the specific Telephone Bearer Service instances. */ #define BT_TBS_GTBS_INDEX 0xFF /** @brief Opaque Telephone Bearer Service instance. */ struct bt_tbs_instance; /** * @brief Callback function for client originating a call. * * @param conn The connection used. * @param call_index The call index. * @param uri The URI. The value may change, so should be * copied if persistence is wanted. * * @return true if the call request was accepted and remote party is alerted. */ typedef bool (*bt_tbs_originate_call_cb)(struct bt_conn *conn, uint8_t call_index, const char *uri); /** * @brief Callback function for client terminating a call. * * The call may be either terminated by the client or the server. * * @param conn The connection used. * @param call_index The call index. * @param reason The termination BT_TBS_REASON_* reason. */ typedef void (*bt_tbs_terminate_call_cb)(struct bt_conn *conn, uint8_t call_index, uint8_t reason); /** * @brief Callback function for client joining calls. * * @param conn The connection used. * @param call_index_count The number of call indexes to join. * @param call_indexes The call indexes. */ typedef void (*bt_tbs_join_calls_cb)(struct bt_conn *conn, uint8_t call_index_count, const uint8_t *call_indexes); /** * @brief Callback function for client request call state change * * @param conn The connection used. * @param call_index The call index. */ typedef void (*bt_tbs_call_change_cb)(struct bt_conn *conn, uint8_t call_index); /** * @brief Callback function for authorizing a client. * * Only used if BT_TBS_AUTHORIZATION is enabled. * * @param conn The connection used. * * @return true if authorized, false otherwise */ typedef bool (*bt_tbs_authorize_cb)(struct bt_conn *conn); struct bt_tbs_cb { bt_tbs_originate_call_cb originate_call; bt_tbs_terminate_call_cb terminate_call; bt_tbs_call_change_cb hold_call; bt_tbs_call_change_cb accept_call; bt_tbs_call_change_cb retrieve_call; bt_tbs_join_calls_cb join_calls; bt_tbs_authorize_cb authorize; }; /** * @brief Accept an alerting call. * * @param call_index The index of the call that will be accepted. * * @return int BT_TBS_RESULT_CODE_* if positive or 0, * errno value if negative. */ int bt_tbs_accept(uint8_t call_index); /** * @brief Hold a call. * * @param call_index The index of the call that will be held. * * @return int BT_TBS_RESULT_CODE_* if positive or 0, * errno value if negative. */ int bt_tbs_hold(uint8_t call_index); /** * @brief Retrieve a call. * * @param call_index The index of the call that will be retrieved. * * @return int BT_TBS_RESULT_CODE_* if positive or 0, * errno value if negative. */ int bt_tbs_retrieve(uint8_t call_index); /** * @brief Terminate a call. * * @param call_index The index of the call that will be terminated. * * @return int BT_TBS_RESULT_CODE_* if positive or 0, * errno value if negative. */ int bt_tbs_terminate(uint8_t call_index); /** * @brief Originate a call * * @param[in] bearer_index The index of the Telephone Bearer. * @param[in] uri The remote URI. * @param[out] call_index Pointer to a value where the new call_index will be * stored. * * @return int A call index on success (positive value), * errno value on fail. */ int bt_tbs_originate(uint8_t bearer_index, char *uri, uint8_t *call_index); /** * @brief Join calls * * @param call_index_cnt The number of call indexes to join * @param call_indexes Array of call indexes to join. * * @return int BT_TBS_RESULT_CODE_* if positive or 0, * errno value if negative. */ int bt_tbs_join(uint8_t call_index_cnt, uint8_t *call_indexes); /** * @brief Notify the server that the remote party answered the call. * * @param call_index The index of the call that was answered. * * @return int BT_TBS_RESULT_CODE_* if positive or 0, * errno value if negative. */ int bt_tbs_remote_answer(uint8_t call_index); /** * @brief Notify the server that the remote party held the call. * * @param call_index The index of the call that was held. * * @return int BT_TBS_RESULT_CODE_* if positive or 0, * errno value if negative. */ int bt_tbs_remote_hold(uint8_t call_index); /** * @brief Notify the server that the remote party retrieved the call. * * @param call_index The index of the call that was retrieved. * * @return int BT_TBS_RESULT_CODE_* if positive or 0, * errno value if negative. */ int bt_tbs_remote_retrieve(uint8_t call_index); /** * @brief Notify the server that the remote party terminated the call. * * @param call_index The index of the call that was terminated. * * @return int BT_TBS_RESULT_CODE_* if positive or 0, * errno value if negative. */ int bt_tbs_remote_terminate(uint8_t call_index); /** * @brief Notify the server of an incoming call. * * @param bearer_index The index of the Telephone Bearer. * @param to The URI that is receiving the call. * @param from The URI of the remote caller. * @param friendly_name The friendly name of the remote caller. * * @return int New call index if positive or 0, * errno value if negative. */ int bt_tbs_remote_incoming(uint8_t bearer_index, const char *to, const char *from, const char *friendly_name); /** * @brief Set a new bearer provider. * * @param bearer_index The index of the Telephone Bearer or BT_TBS_GTBS_INDEX * for GTBS. * @param name The new bearer provider name. * * @return int BT_TBS_RESULT_CODE_* if positive or 0, * errno value if negative. */ int bt_tbs_set_bearer_provider_name(uint8_t bearer_index, const char *name); /** * @brief Set a new bearer technology. * * @param bearer_index The index of the Telephone Bearer or BT_TBS_GTBS_INDEX * for GTBS. * @param new_technology The new bearer technology. * * @return int BT_TBS_RESULT_CODE_* if positive or 0, * errno value if negative. */ int bt_tbs_set_bearer_technology(uint8_t bearer_index, uint8_t new_technology); /** * @brief Update the signal strength reported by the server. * * @param bearer_index The index of the Telephone Bearer or * BT_TBS_GTBS_INDEX for GTBS. * @param new_signal_strength The new signal strength. * * @return int BT_TBS_RESULT_CODE_* if positive or 0, * errno value if negative. */ int bt_tbs_set_signal_strength(uint8_t bearer_index, uint8_t new_signal_strength); /** * @brief Sets the feature and status value. * * @param bearer_index The index of the Telephone Bearer or BT_TBS_GTBS_INDEX * for GTBS. * @param status_flags The new feature and status value. * * @return int BT_TBS_RESULT_CODE_* if positive or 0, * errno value if negative. */ int bt_tbs_set_status_flags(uint8_t bearer_index, uint16_t status_flags); /** @brief Sets the URI scheme list of a bearer. * * @param bearer_index The index of the Telephone Bearer. * @param uri_list List of URI prefixes (e.g. {"skype", "tel"}). * @param uri_count Number of URI prefixies in @p uri_list. * * @return BT_TBS_RESULT_CODE_* if positive or 0, errno value if negative. */ int bt_tbs_set_uri_scheme_list(uint8_t bearer_index, const char **uri_list, uint8_t uri_count); /** * @brief Register the callbacks for TBS. * * @param cbs Pointer to the callback structure. */ void bt_tbs_register_cb(struct bt_tbs_cb *cbs); /** @brief Prints all calls of all services to the debug log */ void bt_tbs_dbg_print_calls(void); struct bt_tbs_client_call_state { uint8_t index; uint8_t state; uint8_t flags; } __packed; struct bt_tbs_client_call { struct bt_tbs_client_call_state call_info; char *remote_uri; }; /** * @brief Callback function for ccp_discover. * * @param conn The connection that was used to discover CCP for a * device. * @param err Error value. BT_TBS_CLIENT_RESULT_CODE_*, * GATT error or errno value. * @param tbs_count Number of TBS instances on peer device. * @param gtbs_found Whether or not the server has a Generic TBS instance. */ typedef void (*bt_tbs_client_discover_cb)(struct bt_conn *conn, int err, uint8_t tbs_count, bool gtbs_found); /** * @brief Callback function for writing values to peer device. * * @param conn The connection used in the function. * @param err Error value. BT_TBS_CLIENT_RESULT_CODE_*, * GATT error or errno value. * @param inst_index The index of the TBS instance that was updated. */ typedef void (*bt_tbs_client_write_value_cb)(struct bt_conn *conn, int err, uint8_t inst_index); /** * @brief Callback function for the CCP call control functions. * * @param conn The connection used in the function. * @param err Error value. BT_TBS_CLIENT_RESULT_CODE_*, * GATT error or errno value. * @param inst_index The index of the TBS instance that was updated. * @param call_index The call index. For #bt_tbs_client_originate_call this will * always be 0, and does not reflect the actual call index. */ typedef void (*bt_tbs_client_cp_cb)(struct bt_conn *conn, int err, uint8_t inst_index, uint8_t call_index); /** * @brief Callback function for functions that read a string value. * * @param conn The connection used in the function. * @param err Error value. BT_TBS_CLIENT_RESULT_CODE_*, * GATT error or errno value. * @param inst_index The index of the TBS instance that was updated. * @param value The Null-terminated string value. The value is not kept * by the client, so must be copied to be saved. */ typedef void (*bt_tbs_client_read_string_cb)(struct bt_conn *conn, int err, uint8_t inst_index, const char *value); /** * @brief Callback function for functions that read an integer value. * * @param conn The connection used in the function. * @param err Error value. BT_TBS_CLIENT_RESULT_CODE_*, * GATT error or errno value. * @param inst_index The index of the TBS instance that was updated. * @param value The integer value. */ typedef void (*bt_tbs_client_read_value_cb)(struct bt_conn *conn, int err, uint8_t inst_index, uint32_t value); /** * @brief Callback function for ccp_read_termination_reason. * * @param conn The connection used in the function. * @param err Error value. BT_TBS_CLIENT_RESULT_CODE_*, * GATT error or errno value. * @param inst_index The index of the TBS instance that was updated. * @param call_index The call index. * @param reason The termination reason. */ typedef void (*bt_tbs_client_termination_reason_cb)(struct bt_conn *conn, int err, uint8_t inst_index, uint8_t call_index, uint8_t reason); /** * @brief Callback function for ccp_read_current_calls. * * @param conn The connection used in the function. * @param err Error value. BT_TBS_CLIENT_RESULT_CODE_*, * GATT error or errno value. * @param inst_index The index of the TBS instance that was updated. * @param call_count Number of calls read. * @param calls Array of calls. The array is not kept by * the client, so must be copied to be saved. */ typedef void (*bt_tbs_client_current_calls_cb)(struct bt_conn *conn, int err, uint8_t inst_index, uint8_t call_count, const struct bt_tbs_client_call *calls); /** * @brief Callback function for ccp_read_call_state. * * @param conn The connection used in the function. * @param err Error value. BT_TBS_CLIENT_RESULT_CODE_*, * GATT error or errno value. * @param inst_index The index of the TBS instance that was updated. * @param call_count Number of call states read. * @param call_states Array of call states. The array is not kept by * the client, so must be copied to be saved. */ typedef void (*bt_tbs_client_call_states_cb)(struct bt_conn *conn, int err, uint8_t inst_index, uint8_t call_count, const struct bt_tbs_client_call_state *call_states); struct bt_tbs_client_cb { bt_tbs_client_discover_cb discover; #if defined(CONFIG_BT_TBS_CLIENT_ORIGINATE_CALL) bt_tbs_client_cp_cb originate_call; #endif /* defined(CONFIG_BT_TBS_CLIENT_ORIGINATE_CALL) */ #if defined(CONFIG_BT_TBS_CLIENT_TERMINATE_CALL) bt_tbs_client_cp_cb terminate_call; #endif /* defined(CONFIG_BT_TBS_CLIENT_TERMINATE_CALL) */ #if defined(CONFIG_BT_TBS_CLIENT_HOLD_CALL) bt_tbs_client_cp_cb hold_call; #endif /* defined(CONFIG_BT_TBS_CLIENT_HOLD_CALL) */ #if defined(CONFIG_BT_TBS_CLIENT_ACCEPT_CALL) bt_tbs_client_cp_cb accept_call; #endif /* defined(CONFIG_BT_TBS_CLIENT_ACCEPT_CALL) */ #if defined(CONFIG_BT_TBS_CLIENT_RETRIEVE_CALL) bt_tbs_client_cp_cb retrieve_call; #endif /* defined(CONFIG_BT_TBS_CLIENT_RETRIEVE_CALL) */ #if defined(CONFIG_BT_TBS_CLIENT_JOIN_CALLS) bt_tbs_client_cp_cb join_calls; #endif /* defined(CONFIG_BT_TBS_CLIENT_JOIN_CALLS) */ #if defined(CONFIG_BT_TBS_CLIENT_BEARER_PROVIDER_NAME) bt_tbs_client_read_string_cb bearer_provider_name; #endif /* defined(CONFIG_BT_TBS_CLIENT_BEARER_PROVIDER_NAME) */ #if defined(CONFIG_BT_TBS_CLIENT_BEARER_UCI) bt_tbs_client_read_string_cb bearer_uci; #endif /* defined(CONFIG_BT_TBS_CLIENT_BEARER_UCI) */ #if defined(CONFIG_BT_TBS_CLIENT_BEARER_TECHNOLOGY) bt_tbs_client_read_value_cb technology; #endif /* defined(CONFIG_BT_TBS_CLIENT_BEARER_TECHNOLOGY) */ #if defined(CONFIG_BT_TBS_CLIENT_BEARER_URI_SCHEMES_SUPPORTED_LIST) bt_tbs_client_read_string_cb uri_list; #endif /* defined(CONFIG_BT_TBS_CLIENT_BEARER_URI_SCHEMES_SUPPORTED_LIST) */ #if defined(CONFIG_BT_TBS_CLIENT_BEARER_SIGNAL_STRENGTH) bt_tbs_client_read_value_cb signal_strength; #endif /* defined(CONFIG_BT_TBS_CLIENT_BEARER_SIGNAL_STRENGTH) */ #if defined(CONFIG_BT_TBS_CLIENT_READ_BEARER_SIGNAL_INTERVAL) bt_tbs_client_read_value_cb signal_interval; #endif /* defined(CONFIG_BT_TBS_CLIENT_READ_BEARER_SIGNAL_INTERVAL) */ #if defined(CONFIG_BT_TBS_CLIENT_BEARER_LIST_CURRENT_CALLS) bt_tbs_client_current_calls_cb current_calls; #endif /* defined(CONFIG_BT_TBS_CLIENT_BEARER_LIST_CURRENT_CALLS) */ #if defined(CONFIG_BT_TBS_CLIENT_CCID) bt_tbs_client_read_value_cb ccid; #endif /* defined(CONFIG_BT_TBS_CLIENT_CCID) */ #if defined(CONFIG_BT_TBS_CLIENT_INCOMING_URI) bt_tbs_client_read_string_cb call_uri; #endif /* defined(CONFIG_BT_TBS_CLIENT_INCOMING_URI) */ #if defined(CONFIG_BT_TBS_CLIENT_STATUS_FLAGS) bt_tbs_client_read_value_cb status_flags; #endif /* defined(CONFIG_BT_TBS_CLIENT_STATUS_FLAGS) */ bt_tbs_client_call_states_cb call_state; #if defined(CONFIG_BT_TBS_CLIENT_OPTIONAL_OPCODES) bt_tbs_client_read_value_cb optional_opcodes; #endif /* defined(CONFIG_BT_TBS_CLIENT_OPTIONAL_OPCODES) */ bt_tbs_client_termination_reason_cb termination_reason; #if defined(CONFIG_BT_TBS_CLIENT_INCOMING_CALL) bt_tbs_client_read_string_cb remote_uri; #endif /* defined(CONFIG_BT_TBS_CLIENT_INCOMING_CALL) */ #if defined(CONFIG_BT_TBS_CLIENT_CALL_FRIENDLY_NAME) bt_tbs_client_read_string_cb friendly_name; #endif /* defined(CONFIG_BT_TBS_CLIENT_CALL_FRIENDLY_NAME) */ }; /** * @brief Discover TBS for a connection. This will start a GATT * discover and setup handles and subscriptions. * * @param conn The connection to discover TBS for. * * @return int 0 on success, GATT error value on fail. */ int bt_tbs_client_discover(struct bt_conn *conn); /** * @brief Set the outgoing URI for a TBS instance on the peer device. * * @param conn The connection to the TBS server. * @param inst_index The index of the TBS instance. * @param uri The Null-terminated URI string. * * @return int 0 on success, errno value on fail. */ int bt_tbs_client_set_outgoing_uri(struct bt_conn *conn, uint8_t inst_index, const char *uri); /** * @brief Set the signal strength reporting interval for a TBS instance. * * @param conn The connection to the TBS server. * @param inst_index The index of the TBS instance. * @param interval The interval to write (0-255 seconds). * * @return int 0 on success, errno value on fail. * * @note @kconfig{CONFIG_BT_TBS_CLIENT_SET_BEARER_SIGNAL_INTERVAL} must be set * for this function to be effective. */ int bt_tbs_client_set_signal_strength_interval(struct bt_conn *conn, uint8_t inst_index, uint8_t interval); /** * @brief Request to originate a call. * * @param conn The connection to the TBS server. * @param inst_index The index of the TBS instance. * @param uri The URI of the callee. * * @return int 0 on success, errno value on fail. * * @note @kconfig{CONFIG_BT_TBS_CLIENT_ORIGINATE_CALL} must be set * for this function to be effective. */ int bt_tbs_client_originate_call(struct bt_conn *conn, uint8_t inst_index, const char *uri); /** * @brief Request to terminate a call * * @param conn The connection to the TBS server. * @param inst_index The index of the TBS instance. * @param call_index The call index to terminate. * * @return int 0 on success, errno value on fail. * * @note @kconfig{CONFIG_BT_TBS_CLIENT_TERMINATE_CALL} must be set * for this function to be effective. */ int bt_tbs_client_terminate_call(struct bt_conn *conn, uint8_t inst_index, uint8_t call_index); /** * @brief Request to hold a call * * @param conn The connection to the TBS server. * @param inst_index The index of the TBS instance. * @param call_index The call index to place on hold. * * @return int 0 on success, errno value on fail. * * @note @kconfig{CONFIG_BT_TBS_CLIENT_HOLD_CALL} must be set * for this function to be effective. */ int bt_tbs_client_hold_call(struct bt_conn *conn, uint8_t inst_index, uint8_t call_index); /** * @brief Accept an incoming call * * @param conn The connection to the TBS server. * @param inst_index The index of the TBS instance. * @param call_index The call index to accept. * * @return int 0 on success, errno value on fail. * * @note @kconfig{CONFIG_BT_TBS_CLIENT_ACCEPT_CALL} must be set * for this function to be effective. */ int bt_tbs_client_accept_call(struct bt_conn *conn, uint8_t inst_index, uint8_t call_index); /** * @brief Retrieve call from (local) hold. * * @param conn The connection to the TBS server. * @param inst_index The index of the TBS instance. * @param call_index The call index to retrieve. * * @return int 0 on success, errno value on fail. * * @note @kconfig{CONFIG_BT_TBS_CLIENT_RETRIEVE_CALL} must be set * for this function to be effective. */ int bt_tbs_client_retrieve_call(struct bt_conn *conn, uint8_t inst_index, uint8_t call_index); /** * @brief Join multiple calls. * * @param conn The connection to the TBS server. * @param inst_index The index of the TBS instance. * @param call_indexes Array of call indexes. * @param count Number of call indexes in the call_indexes array. * * @return int 0 on success, errno value on fail. * * @note @kconfig{CONFIG_BT_TBS_CLIENT_JOIN_CALLS} must be set * for this function to be effective. */ int bt_tbs_client_join_calls(struct bt_conn *conn, uint8_t inst_index, const uint8_t *call_indexes, uint8_t count); /** * @brief Read the bearer provider name of a TBS instance. * * @param conn The connection to the TBS server. * @param inst_index The index of the TBS instance. * * @return int 0 on success, errno value on fail. * * @note @kconfig{CONFIG_BT_TBS_CLIENT_BEARER_PROVIDER_NAME} must be set * for this function to be effective. */ int bt_tbs_client_read_bearer_provider_name(struct bt_conn *conn, uint8_t inst_index); /** * @brief Read the UCI of a TBS instance. * * @param conn The connection to the TBS server. * @param inst_index The index of the TBS instance. * * @return int 0 on success, errno value on fail. * * @note @kconfig{CONFIG_BT_TBS_CLIENT_BEARER_UCI} must be set * for this function to be effective. */ int bt_tbs_client_read_bearer_uci(struct bt_conn *conn, uint8_t inst_index); /** * @brief Read the technology of a TBS instance. * * @param conn The connection to the TBS server. * @param inst_index The index of the TBS instance. * * @return int 0 on success, errno value on fail. * * @note @kconfig{CONFIG_BT_TBS_CLIENT_BEARER_TECHNOLOGY} must be set * for this function to be effective. */ int bt_tbs_client_read_technology(struct bt_conn *conn, uint8_t inst_index); /** * @brief Read the URI schemes list of a TBS instance. * * @param conn The connection to the TBS server. * @param inst_index The index of the TBS instance. * * @return int 0 on success, errno value on fail. * * @note @kconfig{CONFIG_BT_TBS_CLIENT_BEARER_URI_SCHEMES_SUPPORTED_LIST} must be set * for this function to be effective. */ int bt_tbs_client_read_uri_list(struct bt_conn *conn, uint8_t inst_index); /** * @brief Read the current signal strength of a TBS instance. * * @param conn The connection to the TBS server. * @param inst_index The index of the TBS instance. * * @return int 0 on success, errno value on fail. * * @note @kconfig{CONFIG_BT_TBS_CLIENT_BEARER_SIGNAL_STRENGTH} must be set * for this function to be effective. */ int bt_tbs_client_read_signal_strength(struct bt_conn *conn, uint8_t inst_index); /** * @brief Read the signal strength reporting interval of a TBS instance. * * @param conn The connection to the TBS server. * @param inst_index The index of the TBS instance. * * @return int 0 on success, errno value on fail. * * @note @kconfig{CONFIG_BT_TBS_CLIENT_READ_BEARER_SIGNAL_INTERVAL} must be set * for this function to be effective. */ int bt_tbs_client_read_signal_interval(struct bt_conn *conn, uint8_t inst_index); /** * @brief Read the list of current calls of a TBS instance. * * @param conn The connection to the TBS server. * @param inst_index The index of the TBS instance. * * @return int 0 on success, errno value on fail. * * @note @kconfig{CONFIG_BT_TBS_CLIENT_BEARER_LIST_CURRENT_CALLS} must be set * for this function to be effective. */ int bt_tbs_client_read_current_calls(struct bt_conn *conn, uint8_t inst_index); /** * @brief Read the content ID of a TBS instance. * * @param conn The connection to the TBS server. * @param inst_index The index of the TBS instance. * * @return int 0 on success, errno value on fail. * * @note @kconfig{CONFIG_BT_TBS_CLIENT_CCID} must be set * for this function to be effective. */ int bt_tbs_client_read_ccid(struct bt_conn *conn, uint8_t inst_index); /** * @brief Read the call target URI of a TBS instance. * * @param conn The connection to the TBS server. * @param inst_index The index of the TBS instance. * * @return int 0 on success, errno value on fail. * * @note @kconfig{CONFIG_BT_TBS_CLIENT_INCOMING_URI} must be set * for this function to be effective. */ int bt_tbs_client_read_call_uri(struct bt_conn *conn, uint8_t inst_index); /** * @brief Read the feature and status value of a TBS instance. * * @param conn The connection to the TBS server. * @param inst_index The index of the TBS instance. * * @return int 0 on success, errno value on fail. * * @note @kconfig{CONFIG_BT_TBS_CLIENT_STATUS_FLAGS} must be set * for this function to be effective. */ int bt_tbs_client_read_status_flags(struct bt_conn *conn, uint8_t inst_index); /** * @brief Read the states of the current calls of a TBS instance. * * @param conn The connection to the TBS server. * @param inst_index The index of the TBS instance. * * @return int 0 on success, errno value on fail. */ int bt_tbs_client_read_call_state(struct bt_conn *conn, uint8_t inst_index); /** * @brief Read the remote URI of a TBS instance. * * @param conn The connection to the TBS server. * @param inst_index The index of the TBS instance. * * @return int 0 on success, errno value on fail. * * @note @kconfig{CONFIG_BT_TBS_CLIENT_INCOMING_CALL} must be set * for this function to be effective. */ int bt_tbs_client_read_remote_uri(struct bt_conn *conn, uint8_t inst_index); /** * @brief Read the friendly name of a call for a TBS instance. * * @param conn The connection to the TBS server. * @param inst_index The index of the TBS instance. * * @return int 0 on success, errno value on fail. * * @note @kconfig{CONFIG_BT_TBS_CLIENT_CALL_FRIENDLY_NAME} must be set * for this function to be effective. */ int bt_tbs_client_read_friendly_name(struct bt_conn *conn, uint8_t inst_index); /** @brief Read the supported opcode of a TBS instance. * * @param conn The connection to the TBS server. * @param inst_index The index of the TBS instance. * * @return int 0 on success, errno value on fail. * * @note @kconfig{CONFIG_BT_TBS_CLIENT_OPTIONAL_OPCODES} must be set * for this function to be effective. */ int bt_tbs_client_read_optional_opcodes(struct bt_conn *conn, uint8_t inst_index); /** * @brief Register the callbacks for CCP. * * @param cbs Pointer to the callback structure. */ void bt_tbs_client_register_cb(const struct bt_tbs_client_cb *cbs); /** * @brief Look up Telephone Bearer Service instance by CCID * * @param conn The connection to the TBS server. * @param ccid The CCID to lookup a service instance for. * * @return Pointer to a Telephone Bearer Service instance if found else NULL. * * @note @kconfig{CONFIG_BT_TBS_CLIENT_CCID} must be set * for this function to be effective. */ struct bt_tbs_instance *bt_tbs_client_get_by_ccid(const struct bt_conn *conn, uint8_t ccid); #endif /* ZEPHYR_INCLUDE_BLUETOOTH_AUDIO_TBS_H_ */