/* * avdtp_internal.h - avdtp handling * Copyright (c) 2015-2016 Intel Corporation * Copyright 2021,2024 NXP * * SPDX-License-Identifier: Apache-2.0 */ #include /* @brief A2DP ROLE's */ #define A2DP_SRC_ROLE 0x00 #define A2DP_SNK_ROLE 0x01 /* @brief AVDTP Role */ #define BT_AVDTP_INT 0x00 #define BT_AVDTP_ACP 0x01 #define BT_L2CAP_PSM_AVDTP 0x0019 /* AVDTP SIGNAL HEADER - Packet Type*/ #define BT_AVDTP_PACKET_TYPE_SINGLE 0x00 #define BT_AVDTP_PACKET_TYPE_START 0x01 #define BT_AVDTP_PACKET_TYPE_CONTINUE 0x02 #define BT_AVDTP_PACKET_TYPE_END 0x03 /* AVDTP SIGNAL HEADER - MESSAGE TYPE */ #define BT_AVDTP_CMD 0x00 #define BT_AVDTP_GEN_REJECT 0x01 #define BT_AVDTP_ACCEPT 0x02 #define BT_AVDTP_REJECT 0x03 /* @brief AVDTP SIGNAL HEADER - Signal Identifier */ #define BT_AVDTP_DISCOVER 0x01 #define BT_AVDTP_GET_CAPABILITIES 0x02 #define BT_AVDTP_SET_CONFIGURATION 0x03 #define BT_AVDTP_GET_CONFIGURATION 0x04 #define BT_AVDTP_RECONFIGURE 0x05 #define BT_AVDTP_OPEN 0x06 #define BT_AVDTP_START 0x07 #define BT_AVDTP_CLOSE 0x08 #define BT_AVDTP_SUSPEND 0x09 #define BT_AVDTP_ABORT 0x0a #define BT_AVDTP_SECURITY_CONTROL 0x0b #define BT_AVDTP_GET_ALL_CAPABILITIES 0x0c #define BT_AVDTP_DELAYREPORT 0x0d /* @brief AVDTP STREAM STATE */ #define BT_AVDTP_STREAM_STATE_IDLE 0x01 #define BT_AVDTP_STREAM_STATE_CONFIGURED 0x02 #define BT_AVDTP_STREAM_STATE_OPEN 0x03 #define BT_AVDTP_STREAM_STATE_STREAMING 0x04 #define BT_AVDTP_STREAM_STATE_CLOSING 0x05 /* @brief AVDTP Media TYPE */ #define BT_AVDTP_SERVICE_CAT_MEDIA_TRANSPORT 0x01 #define BT_AVDTP_SERVICE_CAT_REPORTING 0x02 #define BT_AVDTP_SERVICE_CAT_RECOVERY 0x03 #define BT_AVDTP_SERVICE_CAT_CONTENT_PROTECTION 0x04 #define BT_AVDTP_SERVICE_CAT_HDR_COMPRESSION 0x05 #define BT_AVDTP_SERVICE_CAT_MULTIPLEXING 0x06 #define BT_AVDTP_SERVICE_CAT_MEDIA_CODEC 0x07 #define BT_AVDTP_SERVICE_CAT_DELAYREPORTING 0x08 /* AVDTP Error Codes */ #define BT_AVDTP_SUCCESS 0x00 #define BT_AVDTP_ERR_BAD_HDR_FORMAT 0x01 #define BT_AVDTP_ERR_BAD_LENGTH 0x11 #define BT_AVDTP_ERR_BAD_ACP_SEID 0x12 #define BT_AVDTP_ERR_SEP_IN_USE 0x13 #define BT_AVDTP_ERR_SEP_NOT_IN_USE 0x14 #define BT_AVDTP_ERR_BAD_SERV_CATEGORY 0x17 #define BT_AVDTP_ERR_BAD_PAYLOAD_FORMAT 0x18 #define BT_AVDTP_ERR_NOT_SUPPORTED_COMMAND 0x19 #define BT_AVDTP_ERR_INVALID_CAPABILITIES 0x1a #define BT_AVDTP_ERR_BAD_RECOVERY_TYPE 0x22 #define BT_AVDTP_ERR_BAD_MEDIA_TRANSPORT_FORMAT 0x23 #define BT_AVDTP_ERR_BAD_RECOVERY_FORMAT 0x25 #define BT_AVDTP_ERR_BAD_ROHC_FORMAT 0x26 #define BT_AVDTP_ERR_BAD_CP_FORMAT 0x27 #define BT_AVDTP_ERR_BAD_MULTIPLEXING_FORMAT 0x28 #define BT_AVDTP_ERR_UNSUPPORTED_CONFIGURAION 0x29 #define BT_AVDTP_ERR_BAD_STATE 0x31 #define BT_AVDTP_MIN_SEID 0x01 #define BT_AVDTP_MAX_SEID 0x3E #define BT_AVDTP_RTP_VERSION 2 struct bt_avdtp; struct bt_avdtp_req; struct bt_avdtp_sep_info; /** @brief AVDTP SEID Information AVDTP_SPEC V13 Table 8.8 */ struct bt_avdtp_sep_data { #ifdef CONFIG_LITTLE_ENDIAN uint8_t rfa0: 1; uint8_t inuse: 1; uint8_t id: 6; uint8_t rfa1: 3; uint8_t tsep: 1; uint8_t media_type: 4; #else uint8_t id: 6; uint8_t inuse: 1; uint8_t rfa0: 1; uint8_t media_type: 4; uint8_t tsep: 1; uint8_t rfa1: 3; #endif } __packed; typedef int (*bt_avdtp_func_t)(struct bt_avdtp_req *req); struct bt_avdtp_req { uint8_t sig; uint8_t tid; uint8_t status; bt_avdtp_func_t func; }; struct bt_avdtp_single_sig_hdr { uint8_t hdr; uint8_t signal_id; } __packed; struct bt_avdtp_media_hdr { #ifdef CONFIG_LITTLE_ENDIAN uint8_t CSRC_count: 4; uint8_t header_extension: 1; uint8_t padding: 1; uint8_t RTP_version: 2; uint8_t playload_type: 7; uint8_t marker: 1; #else uint8_t RTP_version: 2; uint8_t padding: 1; uint8_t header_extension: 1; uint8_t CSRC_count: 4; uint8_t marker: 1; uint8_t playload_type: 7; #endif uint16_t sequence_number; uint32_t time_stamp; uint32_t synchronization_source; } __packed; struct bt_avdtp_discover_params { struct bt_avdtp_req req; struct net_buf *buf; }; struct bt_avdtp_get_capabilities_params { struct bt_avdtp_req req; uint8_t stream_endpoint_id; struct net_buf *buf; }; struct bt_avdtp_set_configuration_params { struct bt_avdtp_req req; struct bt_avdtp_sep *sep; uint8_t acp_stream_ep_id; uint8_t int_stream_endpoint_id; uint8_t media_type; uint8_t media_codec_type; uint8_t codec_specific_ie_len; uint8_t *codec_specific_ie; }; /* avdtp_open, avdtp_close, avdtp_start, avdtp_suspend */ struct bt_avdtp_ctrl_params { struct bt_avdtp_req req; struct bt_avdtp_sep *sep; uint8_t acp_stream_ep_id; }; struct bt_avdtp_ops_cb { void (*connected)(struct bt_avdtp *session); void (*disconnected)(struct bt_avdtp *session); struct net_buf *(*alloc_buf)(struct bt_avdtp *session); int (*discovery_ind)(struct bt_avdtp *session, uint8_t *errcode); int (*get_capabilities_ind)(struct bt_avdtp *session, struct bt_avdtp_sep *sep, struct net_buf *rsp_buf, uint8_t *errcode); int (*set_configuration_ind)(struct bt_avdtp *session, struct bt_avdtp_sep *sep, uint8_t int_seid, struct net_buf *buf, uint8_t *errcode); int (*re_configuration_ind)(struct bt_avdtp *session, struct bt_avdtp_sep *sep, uint8_t int_seid, struct net_buf *buf, uint8_t *errcode); int (*open_ind)(struct bt_avdtp *session, struct bt_avdtp_sep *sep, uint8_t *errcode); int (*close_ind)(struct bt_avdtp *session, struct bt_avdtp_sep *sep, uint8_t *errcode); int (*start_ind)(struct bt_avdtp *session, struct bt_avdtp_sep *sep, uint8_t *errcode); int (*suspend_ind)(struct bt_avdtp *session, struct bt_avdtp_sep *sep, uint8_t *errcode); int (*abort_ind)(struct bt_avdtp *session, struct bt_avdtp_sep *sep, uint8_t *errcode); /* stream l2cap is closed */ int (*stream_l2cap_disconnected)(struct bt_avdtp *session, struct bt_avdtp_sep *sep); }; /** @brief Global AVDTP session structure. */ struct bt_avdtp { struct bt_l2cap_br_chan br_chan; struct bt_avdtp_req *req; const struct bt_avdtp_ops_cb *ops; struct bt_avdtp_sep *current_sep; struct k_work_delayable timeout_work; /* semaphore for lock/unlock */ struct k_sem sem_lock; }; struct bt_avdtp_event_cb { int (*accept)(struct bt_conn *conn, struct bt_avdtp **session); }; /* Initialize AVDTP layer*/ int bt_avdtp_init(void); /* Application register with AVDTP layer */ int bt_avdtp_register(struct bt_avdtp_event_cb *cb); /* AVDTP connect */ int bt_avdtp_connect(struct bt_conn *conn, struct bt_avdtp *session); /* AVDTP disconnect */ int bt_avdtp_disconnect(struct bt_avdtp *session); /* AVDTP SEP register function */ int bt_avdtp_register_sep(uint8_t media_type, uint8_t sep_type, struct bt_avdtp_sep *sep); /* AVDTP Discover Request */ int bt_avdtp_discover(struct bt_avdtp *session, struct bt_avdtp_discover_params *param); /* Parse the sep of discovered result */ int bt_avdtp_parse_sep(struct net_buf *buf, struct bt_avdtp_sep_info *sep_info); /* AVDTP Get Capabilities */ int bt_avdtp_get_capabilities(struct bt_avdtp *session, struct bt_avdtp_get_capabilities_params *param); /* Parse the codec type of capabilities */ int bt_avdtp_parse_capability_codec(struct net_buf *buf, uint8_t *codec_type, uint8_t **codec_info_element, uint16_t *codec_info_element_len); /* AVDTP Set Configuration */ int bt_avdtp_set_configuration(struct bt_avdtp *session, struct bt_avdtp_set_configuration_params *param); /* AVDTP reconfigure */ int bt_avdtp_reconfigure(struct bt_avdtp *session, struct bt_avdtp_set_configuration_params *param); /* AVDTP OPEN */ int bt_avdtp_open(struct bt_avdtp *session, struct bt_avdtp_ctrl_params *param); /* AVDTP CLOSE */ int bt_avdtp_close(struct bt_avdtp *session, struct bt_avdtp_ctrl_params *param); /* AVDTP START */ int bt_avdtp_start(struct bt_avdtp *session, struct bt_avdtp_ctrl_params *param); /* AVDTP SUSPEND */ int bt_avdtp_suspend(struct bt_avdtp *session, struct bt_avdtp_ctrl_params *param); /* AVDTP ABORT */ int bt_avdtp_abort(struct bt_avdtp *session, struct bt_avdtp_ctrl_params *param); /* AVDTP send data */ int bt_avdtp_send_media_data(struct bt_avdtp_sep *sep, struct net_buf *buf); /* get media l2cap connection MTU */ uint32_t bt_avdtp_get_media_mtu(struct bt_avdtp_sep *sep);