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esp-idf/components/bt/bluedroid/bta/include/bta_gattc_int.h

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/******************************************************************************
*
* Copyright (C) 2003-2012 Broadcom Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
******************************************************************************/
/******************************************************************************
*
* This is the private file for the file transfer client (FTC).
*
******************************************************************************/
#ifndef BTA_GATTC_INT_H
#define BTA_GATTC_INT_H
#include "bt_target.h"
#include "bta_sys.h"
#include "bta_gatt_api.h"
#include "bta_gattc_ci.h"
#include "bta_gattc_co.h"
#include "fixed_queue.h"
#include "mutex.h"
/*****************************************************************************
** Constants and data types
*****************************************************************************/
enum {
BTA_GATTC_API_OPEN_EVT = BTA_SYS_EVT_START(BTA_ID_GATTC),
BTA_GATTC_INT_OPEN_FAIL_EVT,
BTA_GATTC_API_CANCEL_OPEN_EVT,
BTA_GATTC_INT_CANCEL_OPEN_OK_EVT,
BTA_GATTC_API_READ_EVT,
BTA_GATTC_API_WRITE_EVT,
BTA_GATTC_API_EXEC_EVT,
BTA_GATTC_API_CFG_MTU_EVT,
BTA_GATTC_API_CLOSE_EVT,
BTA_GATTC_API_SEARCH_EVT,
BTA_GATTC_API_CONFIRM_EVT,
BTA_GATTC_API_READ_MULTI_EVT,
BTA_GATTC_API_REFRESH_EVT,
BTA_GATTC_INT_CONN_EVT,
BTA_GATTC_INT_DISCOVER_EVT,
BTA_GATTC_DISCOVER_CMPL_EVT,
BTA_GATTC_OP_CMPL_EVT,
BTA_GATTC_INT_DISCONN_EVT,
BTA_GATTC_INT_START_IF_EVT,
BTA_GATTC_API_REG_EVT,
BTA_GATTC_API_DEREG_EVT,
BTA_GATTC_API_LISTEN_EVT,
BTA_GATTC_API_BROADCAST_EVT,
BTA_GATTC_API_DISABLE_EVT,
BTA_GATTC_ENC_CMPL_EVT
};
typedef UINT16 tBTA_GATTC_INT_EVT;
#define BTA_GATTC_SERVICE_CHANGED_LEN 4
/* max client application GATTC can support */
#ifndef BTA_GATTC_CL_MAX
#if (GATT_MAX_PHY_CHANNEL > 3)
#define BTA_GATTC_CL_MAX GATT_MAX_PHY_CHANNEL
#else
#define BTA_GATTC_CL_MAX 3 // The origin value is 10
#endif
#endif
/* max known devices GATTC can support */
#ifndef BTA_GATTC_KNOWN_SR_MAX
#if (GATT_MAX_PHY_CHANNEL > 3)
#define BTA_GATTC_KNOWN_SR_MAX GATT_MAX_PHY_CHANNEL
#else
#define BTA_GATTC_KNOWN_SR_MAX 3 // The origin value is 10
#endif
#endif
#define BTA_GATTC_CONN_MAX GATT_MAX_PHY_CHANNEL
#ifndef BTA_GATTC_CLCB_MAX
#define BTA_GATTC_CLCB_MAX GATT_CL_MAX_LCB
#endif
#define BTA_GATTC_WRITE_PREPARE GATT_WRITE_PREPARE
#define BTA_GATTC_INVALID_HANDLE 0
/* internal strucutre for GATTC register API */
typedef struct {
BT_HDR hdr;
tBT_UUID app_uuid;
tBTA_GATTC_CBACK *p_cback;
} tBTA_GATTC_API_REG;
typedef struct {
BT_HDR hdr;
tBTA_GATTC_IF client_if;
} tBTA_GATTC_INT_START_IF;
typedef tBTA_GATTC_INT_START_IF tBTA_GATTC_API_DEREG;
typedef tBTA_GATTC_INT_START_IF tBTA_GATTC_INT_DEREG;
typedef struct {
BT_HDR hdr;
BD_ADDR remote_bda;
tBTA_ADDR_TYPE remote_addr_type;
tBTA_GATTC_IF client_if;
BOOLEAN is_direct;
tBTA_TRANSPORT transport;
} tBTA_GATTC_API_OPEN;
typedef tBTA_GATTC_API_OPEN tBTA_GATTC_API_CANCEL_OPEN;
typedef struct {
BT_HDR hdr;
tBTA_GATT_AUTH_REQ auth_req;
UINT16 handle;
tBTA_GATTC_EVT cmpl_evt;
} tBTA_GATTC_API_READ;
typedef struct {
BT_HDR hdr;
tBTA_GATT_AUTH_REQ auth_req;
UINT16 handle;
tBTA_GATTC_EVT cmpl_evt;
tBTA_GATTC_WRITE_TYPE write_type;
UINT16 offset;
UINT16 len;
UINT8 *p_value;
} tBTA_GATTC_API_WRITE;
typedef struct {
BT_HDR hdr;
BOOLEAN is_execute;
} tBTA_GATTC_API_EXEC;
typedef struct {
BT_HDR hdr;
UINT16 handle;
} tBTA_GATTC_API_CONFIRM;
typedef tGATT_CL_COMPLETE tBTA_GATTC_CMPL;
typedef struct {
BT_HDR hdr;
UINT8 op_code;
tGATT_STATUS status;
tBTA_GATTC_CMPL *p_cmpl;
} tBTA_GATTC_OP_CMPL;
typedef struct {
BT_HDR hdr;
tBT_UUID *p_srvc_uuid;
} tBTA_GATTC_API_SEARCH;
typedef struct {
BT_HDR hdr;
tBTA_GATT_AUTH_REQ auth_req;
UINT8 num_attr;
UINT16 handles[GATT_MAX_READ_MULTI_HANDLES];
tBTA_GATTC_EVT cmpl_evt;
}tBTA_GATTC_API_READ_MULTI;
typedef struct {
BT_HDR hdr;
BD_ADDR_PTR remote_bda;
tBTA_GATTC_IF client_if;
BOOLEAN start;
} tBTA_GATTC_API_LISTEN;
typedef struct {
BT_HDR hdr;
} tBTA_GATTC_API_CFG_MTU;
typedef struct {
BT_HDR hdr;
BD_ADDR remote_bda;
tBTA_GATTC_IF client_if;
UINT8 role;
tBT_TRANSPORT transport;
tGATT_DISCONN_REASON reason;
BOOLEAN already_connect;
} tBTA_GATTC_INT_CONN;
typedef struct {
BT_HDR hdr;
BD_ADDR remote_bda;
tBTA_GATTC_IF client_if;
} tBTA_GATTC_ENC_CMPL;
typedef union {
BT_HDR hdr;
tBTA_GATTC_API_REG api_reg;
tBTA_GATTC_API_DEREG api_dereg;
tBTA_GATTC_API_OPEN api_conn;
tBTA_GATTC_API_CANCEL_OPEN api_cancel_conn;
tBTA_GATTC_API_READ api_read;
tBTA_GATTC_API_SEARCH api_search;
tBTA_GATTC_API_WRITE api_write;
tBTA_GATTC_API_CONFIRM api_confirm;
tBTA_GATTC_API_EXEC api_exec;
tBTA_GATTC_API_READ_MULTI api_read_multi;
tBTA_GATTC_API_CFG_MTU api_mtu;
tBTA_GATTC_OP_CMPL op_cmpl;
tBTA_GATTC_INT_CONN int_conn;
tBTA_GATTC_ENC_CMPL enc_cmpl;
tBTA_GATTC_INT_START_IF int_start_if;
tBTA_GATTC_INT_DEREG int_dereg;
/* if peripheral role is supported */
tBTA_GATTC_API_LISTEN api_listen;
} tBTA_GATTC_DATA;
/* GATT server cache on the client */
typedef struct {
tBT_UUID uuid;
UINT16 s_handle;
UINT16 e_handle;
// this field is set only for characteristic
UINT16 char_decl_handle;
BOOLEAN is_primary;
tBTA_GATT_CHAR_PROP property;
} tBTA_GATTC_ATTR_REC;
#define BTA_GATTC_MAX_CACHE_CHAR 40
#define BTA_GATTC_ATTR_LIST_SIZE (BTA_GATTC_MAX_CACHE_CHAR * sizeof(tBTA_GATTC_ATTR_REC))
#ifndef BTA_GATTC_CACHE_SRVR_SIZE
#define BTA_GATTC_CACHE_SRVR_SIZE 600
#endif
enum {
BTA_GATTC_IDLE_ST = 0, /* Idle */
BTA_GATTC_W4_CONN_ST, /* Wait for connection - (optional) */
BTA_GATTC_CONN_ST, /* connected state */
BTA_GATTC_DISCOVER_ST /* discover is in progress */
};
typedef UINT8 tBTA_GATTC_STATE;
typedef struct {
BOOLEAN in_use;
BD_ADDR server_bda;
BOOLEAN connected;
#define BTA_GATTC_SERV_IDLE 0
#define BTA_GATTC_SERV_LOAD 1
#define BTA_GATTC_SERV_SAVE 2
#define BTA_GATTC_SERV_DISC 3
#define BTA_GATTC_SERV_DISC_ACT 4
UINT8 state;
list_t *p_srvc_cache; /* list of tBTA_GATTC_SERVICE */
UINT8 update_count; /* indication received */
UINT8 num_clcb; /* number of associated CLCB */
tBTA_GATTC_ATTR_REC *p_srvc_list;
UINT8 cur_srvc_idx;
UINT8 cur_char_idx;
UINT8 next_avail_idx;
UINT8 total_srvc;
UINT8 total_char;
UINT16 total_attr;
UINT8 srvc_hdl_chg; /* service handle change indication pending */
UINT16 attr_index; /* cahce NV saving/loading attribute index */
UINT16 mtu;
} tBTA_GATTC_SERV;
#ifndef BTA_GATTC_NOTIF_REG_MAX
#define BTA_GATTC_NOTIF_REG_MAX 7//15
#endif
typedef struct {
BOOLEAN in_use;
BD_ADDR remote_bda;
UINT16 handle;
}tBTA_GATTC_NOTIF_REG;
typedef struct {
tBTA_GATTC_CBACK *p_cback;
BOOLEAN in_use;
tBTA_GATTC_IF client_if; /* client interface with BTE stack for this application */
UINT8 num_clcb; /* number of associated CLCB */
BOOLEAN dereg_pending;
tBT_UUID app_uuid;
tBTA_GATTC_NOTIF_REG notif_reg[BTA_GATTC_NOTIF_REG_MAX];
} tBTA_GATTC_RCB;
/* client channel is a mapping between a BTA client(cl_id) and a remote BD address */
typedef struct {
UINT16 bta_conn_id; /* client channel ID, unique for clcb */
BD_ADDR bda;
tBTA_TRANSPORT transport; /* channel transport */
tBTA_GATTC_RCB *p_rcb; /* pointer to the registration CB */
tBTA_GATTC_SERV *p_srcb; /* server cache CB */
tBTA_GATTC_DATA *p_q_cmd; /* command in queue waiting for execution */
list_t *p_cmd_list; /* The list to store the command to be sent */
BOOLEAN is_full; /* The gattc command queue is full or not */
#define BTA_GATTC_NO_SCHEDULE 0
#define BTA_GATTC_DISC_WAITING 0x01
#define BTA_GATTC_REQ_WAITING 0x10
UINT8 auto_update; /* auto update is waiting */
BOOLEAN disc_active;
BOOLEAN in_use;
tBTA_GATTC_STATE state;
tBTA_GATT_STATUS status;
UINT16 reason;
} tBTA_GATTC_CLCB;
/* background connection tracking information */
#if GATT_MAX_APPS <= 8
typedef UINT8 tBTA_GATTC_CIF_MASK ;
#elif GATT_MAX_APPS <= 16
typedef UINT16 tBTA_GATTC_CIF_MASK;
#elif GATT_MAX_APPS <= 32
typedef UINT32 tBTA_GATTC_CIF_MASK;
#endif
typedef struct {
BOOLEAN in_use;
BD_ADDR remote_bda;
tBTA_GATTC_CIF_MASK cif_mask;
tBTA_GATTC_CIF_MASK cif_adv_mask;
} tBTA_GATTC_BG_TCK;
typedef struct {
BOOLEAN in_use;
BD_ADDR remote_bda;
TIMER_LIST_ENT service_change_ccc_timer; /* wait for discovering remote device's service change ccc handle */
BOOLEAN ccc_timer_used; /* service_change_ccc_timer started */
BOOLEAN service_change_ccc_written; /* has written remote device's service change ccc */
} tBTA_GATTC_CONN;
enum {
BTA_GATTC_STATE_DISABLED,
BTA_GATTC_STATE_ENABLING,
BTA_GATTC_STATE_ENABLED,
BTA_GATTC_STATE_DISABLING
};
typedef struct {
UINT8 state;
osi_mutex_t write_ccc_mutex;
tBTA_GATTC_CONN conn_track[BTA_GATTC_CONN_MAX];
tBTA_GATTC_BG_TCK bg_track[BTA_GATTC_KNOWN_SR_MAX];
tBTA_GATTC_RCB cl_rcb[BTA_GATTC_CL_MAX];
tBTA_GATTC_CLCB clcb[BTA_GATTC_CLCB_MAX];
tBTA_GATTC_SERV known_server[BTA_GATTC_KNOWN_SR_MAX];
}tBTA_GATTC_CB;
typedef enum {
SERVICE_CHANGE_CCC_WRITTEN_SUCCESS = 0,
SERVICE_CHANGE_CACHE_NOT_FOUND,
SERVICE_CHANGE_SERVICE_NOT_FOUND,
SERVICE_CHANGE_CHAR_NOT_FOUND,
SERVICE_CHANGE_CCC_NOT_FOUND,
SERVICE_CHANGE_WRITE_CCC_FAILED
}tBTA_GATTC_FIND_SERVICE_CB;
/*****************************************************************************
** Global data
*****************************************************************************/
/* GATTC control block */
#if BTA_DYNAMIC_MEMORY == FALSE
extern tBTA_GATTC_CB bta_gattc_cb;
#else
extern tBTA_GATTC_CB *bta_gattc_cb_ptr;
#define bta_gattc_cb (*bta_gattc_cb_ptr)
#endif
/*****************************************************************************
** Function prototypes
*****************************************************************************/
extern BOOLEAN bta_gattc_hdl_event(BT_HDR *p_msg);
extern BOOLEAN bta_gattc_sm_execute(tBTA_GATTC_CLCB *p_clcb, UINT16 event, tBTA_GATTC_DATA *p_data);
/* function processed outside SM */
extern void bta_gattc_disable(tBTA_GATTC_CB *p_cb);
extern void bta_gattc_register(tBTA_GATTC_CB *p_cb, tBTA_GATTC_DATA *p_data);
extern void bta_gattc_start_if(tBTA_GATTC_CB *p_cb, tBTA_GATTC_DATA *p_data);
extern void bta_gattc_process_api_open (tBTA_GATTC_CB *p_cb, tBTA_GATTC_DATA *p_msg);
extern void bta_gattc_process_api_open_cancel (tBTA_GATTC_CB *p_cb, tBTA_GATTC_DATA *p_msg);
extern void bta_gattc_deregister(tBTA_GATTC_CB *p_cb, tBTA_GATTC_RCB *p_clreg);
extern void bta_gattc_process_enc_cmpl(tBTA_GATTC_CB *p_cb, tBTA_GATTC_DATA *p_msg);
/* function within state machine */
extern void bta_gattc_open(tBTA_GATTC_CLCB *p_clcb, tBTA_GATTC_DATA *p_data);
extern void bta_gattc_open_fail(tBTA_GATTC_CLCB *p_clcb, tBTA_GATTC_DATA *p_data);
extern void bta_gattc_open_error(tBTA_GATTC_CLCB *p_clcb, tBTA_GATTC_DATA *p_data);
extern void bta_gattc_cancel_open(tBTA_GATTC_CLCB *p_clcb, tBTA_GATTC_DATA *p_data);
extern void bta_gattc_cancel_open_ok(tBTA_GATTC_CLCB *p_clcb, tBTA_GATTC_DATA *p_data);
extern void bta_gattc_cancel_open_error(tBTA_GATTC_CLCB *p_clcb, tBTA_GATTC_DATA *p_data);
extern void bta_gattc_conn(tBTA_GATTC_CLCB *p_clcb, tBTA_GATTC_DATA *p_data);
extern void bta_gattc_conncback(tBTA_GATTC_RCB *p_rcb, tBTA_GATTC_DATA *p_data);
extern void bta_gattc_disconncback(tBTA_GATTC_RCB *p_rcb, tBTA_GATTC_DATA *p_data);
extern void bta_gattc_close(tBTA_GATTC_CLCB *p_clcb, tBTA_GATTC_DATA *p_data);
extern void bta_gattc_close_fail(tBTA_GATTC_CLCB *p_clcb, tBTA_GATTC_DATA *p_data);
extern void bta_gattc_disc_close(tBTA_GATTC_CLCB *p_clcb, tBTA_GATTC_DATA *p_data);
extern void bta_gattc_start_discover(tBTA_GATTC_CLCB *p_clcb, tBTA_GATTC_DATA *p_data);
extern void bta_gattc_disc_cmpl(tBTA_GATTC_CLCB *p_clcb, tBTA_GATTC_DATA *p_data);
extern void bta_gattc_read(tBTA_GATTC_CLCB *p_clcb, tBTA_GATTC_DATA *p_data);
extern void bta_gattc_write(tBTA_GATTC_CLCB *p_clcb, tBTA_GATTC_DATA *p_data);
extern void bta_gattc_op_cmpl(tBTA_GATTC_CLCB *p_clcb, tBTA_GATTC_DATA *p_data);
extern void bta_gattc_q_cmd(tBTA_GATTC_CLCB *p_clcb, tBTA_GATTC_DATA *p_data);
extern void bta_gattc_free_command_data(tBTA_GATTC_CLCB *p_clcb);
extern void bta_gattc_search(tBTA_GATTC_CLCB *p_clcb, tBTA_GATTC_DATA *p_data);
extern void bta_gattc_fail(tBTA_GATTC_CLCB *p_clcb, tBTA_GATTC_DATA *p_data);
extern void bta_gattc_confirm(tBTA_GATTC_CLCB *p_clcb, tBTA_GATTC_DATA *p_data);
extern void bta_gattc_execute(tBTA_GATTC_CLCB *p_clcb, tBTA_GATTC_DATA *p_data);
extern void bta_gattc_read_multi(tBTA_GATTC_CLCB *p_clcb, tBTA_GATTC_DATA *p_data);
extern void bta_gattc_ci_open(tBTA_GATTC_CLCB *p_clcb, tBTA_GATTC_DATA *p_data);
extern void bta_gattc_ci_close(tBTA_GATTC_CLCB *p_clcb, tBTA_GATTC_DATA *p_data);
extern void bta_gattc_ignore_op_cmpl(tBTA_GATTC_CLCB *p_clcb, tBTA_GATTC_DATA *p_data);
extern void bta_gattc_restart_discover(tBTA_GATTC_CLCB *p_clcb, tBTA_GATTC_DATA *p_msg);
extern void bta_gattc_init_bk_conn(tBTA_GATTC_API_OPEN *p_data, tBTA_GATTC_RCB *p_clreg);
extern void bta_gattc_cancel_bk_conn(tBTA_GATTC_API_CANCEL_OPEN *p_data);
extern void bta_gattc_send_open_cback( tBTA_GATTC_RCB *p_clreg, tBTA_GATT_STATUS status,
BD_ADDR remote_bda, UINT16 conn_id, tBTA_TRANSPORT transport, UINT16 mtu);
extern void bta_gattc_send_connect_cback( tBTA_GATTC_RCB *p_clreg, BD_ADDR remote_bda, UINT16 conn_id);
extern void bta_gattc_send_disconnect_cback( tBTA_GATTC_RCB *p_clreg, tGATT_DISCONN_REASON reason,
BD_ADDR remote_bda, UINT16 conn_id);
extern void bta_gattc_process_api_refresh(tBTA_GATTC_CB *p_cb, tBTA_GATTC_DATA *p_msg);
extern void bta_gattc_cfg_mtu(tBTA_GATTC_CLCB *p_clcb, tBTA_GATTC_DATA *p_data);
#if BLE_INCLUDED == TRUE
extern void bta_gattc_listen(tBTA_GATTC_CB *p_cb, tBTA_GATTC_DATA *p_msg);
extern void bta_gattc_broadcast(tBTA_GATTC_CB *p_cb, tBTA_GATTC_DATA *p_msg);
#endif
/* utility functions */
extern tBTA_GATTC_CLCB *bta_gattc_find_clcb_by_cif (UINT8 client_if, BD_ADDR remote_bda, tBTA_TRANSPORT transport);
extern tBTA_GATTC_CLCB *bta_gattc_find_clcb_by_conn_id (UINT16 conn_id);
extern tBTA_GATTC_CLCB *bta_gattc_clcb_alloc(tBTA_GATTC_IF client_if, BD_ADDR remote_bda, tBTA_TRANSPORT transport);
extern void bta_gattc_clcb_dealloc(tBTA_GATTC_CLCB *p_clcb);
extern tBTA_GATTC_CLCB *bta_gattc_find_alloc_clcb(tBTA_GATTC_IF client_if, BD_ADDR remote_bda, tBTA_TRANSPORT transport);
extern tBTA_GATTC_RCB *bta_gattc_cl_get_regcb(UINT8 client_if);
extern tBTA_GATTC_SERV *bta_gattc_find_srcb(BD_ADDR bda);
extern tBTA_GATTC_SERV *bta_gattc_srcb_alloc(BD_ADDR bda);
extern tBTA_GATTC_SERV *bta_gattc_find_scb_by_cid (UINT16 conn_id);
extern tBTA_GATTC_CLCB *bta_gattc_find_int_conn_clcb(tBTA_GATTC_DATA *p_msg);
extern tBTA_GATTC_CLCB *bta_gattc_find_int_disconn_clcb(tBTA_GATTC_DATA *p_msg);
extern BOOLEAN bta_gattc_enqueue(tBTA_GATTC_CLCB *p_clcb, tBTA_GATTC_DATA *p_data);
extern BOOLEAN bta_gattc_uuid_compare (const tBT_UUID *p_src, const tBT_UUID *p_tar, BOOLEAN is_precise);
extern BOOLEAN bta_gattc_check_notif_registry(tBTA_GATTC_RCB *p_clreg, tBTA_GATTC_SERV *p_srcb, tBTA_GATTC_NOTIFY *p_notify);
extern BOOLEAN bta_gattc_mark_bg_conn (tBTA_GATTC_IF client_if, BD_ADDR_PTR remote_bda, BOOLEAN add, BOOLEAN is_listen);
extern BOOLEAN bta_gattc_check_bg_conn (tBTA_GATTC_IF client_if, BD_ADDR remote_bda, UINT8 role);
extern UINT8 bta_gattc_num_reg_app(void);
extern void bta_gattc_clear_notif_registration(tBTA_GATTC_SERV *p_srcb, UINT16 conn_id, UINT16 start_handle, UINT16 end_handle);
extern tBTA_GATTC_SERV * bta_gattc_find_srvr_cache(BD_ADDR bda);
/* discovery functions */
extern void bta_gattc_disc_res_cback (UINT16 conn_id, tGATT_DISC_TYPE disc_type, tGATT_DISC_RES *p_data);
extern void bta_gattc_disc_cmpl_cback (UINT16 conn_id, tGATT_DISC_TYPE disc_type, tGATT_STATUS status);
extern tBTA_GATT_STATUS bta_gattc_discover_procedure(UINT16 conn_id, tBTA_GATTC_SERV *p_server_cb, UINT8 disc_type);
extern tBTA_GATT_STATUS bta_gattc_discover_pri_service(UINT16 conn_id, tBTA_GATTC_SERV *p_server_cb, UINT8 disc_type);
extern void bta_gattc_search_service(tBTA_GATTC_CLCB *p_clcb, tBT_UUID *p_uuid);
extern const list_t* bta_gattc_get_services(UINT16 conn_id);
extern const tBTA_GATTC_SERVICE* bta_gattc_get_service_for_handle(UINT16 conn_id, UINT16 handle);
tBTA_GATTC_CHARACTERISTIC* bta_gattc_get_characteristic_srcb(tBTA_GATTC_SERV *p_srcb, UINT16 handle);
extern tBTA_GATTC_CHARACTERISTIC* bta_gattc_get_characteristic(UINT16 conn_id, UINT16 handle);
extern tBTA_GATTC_DESCRIPTOR* bta_gattc_get_descriptor(UINT16 conn_id, UINT16 handle);
extern void bta_gattc_get_db_size_handle(UINT16 conn_id, UINT16 start_handle, UINT16 end_handle, int *count);
extern void bta_gattc_get_db_size_with_type_handle(UINT16 conn_id, bt_gatt_db_attribute_type_t type,
UINT16 start_handle, UINT16 end_handle, UINT16 char_handle, int *count);
extern void bta_gattc_get_service_with_uuid(UINT16 conn_id, tBT_UUID *svc_uuid,
btgatt_db_element_t **svc_db,
int *count);
extern void bta_gattc_get_db_with_opration(UINT16 conn_id,
bt_gatt_get_db_op_t op,
UINT16 char_handle,
tBT_UUID *incl_uuid,
tBT_UUID *char_uuid,
tBT_UUID *descr_uuid,
UINT16 start_handle, UINT16 end_handle,
btgatt_db_element_t **char_db,
int *count);
extern void bta_gattc_get_gatt_db(UINT16 conn_id, UINT16 start_handle, UINT16 end_handle, btgatt_db_element_t **db, int *count);
extern tBTA_GATT_STATUS bta_gattc_init_cache(tBTA_GATTC_SERV *p_srvc_cb);
extern void bta_gattc_rebuild_cache(tBTA_GATTC_SERV *p_srcv, UINT16 num_attr, tBTA_GATTC_NV_ATTR *attr);
extern void bta_gattc_cache_save(tBTA_GATTC_SERV *p_srvc_cb, UINT16 conn_id);
extern void bta_gattc_reset_discover_st(tBTA_GATTC_SERV *p_srcb, tBTA_GATT_STATUS status);
extern tBTA_GATTC_CONN *bta_gattc_conn_alloc(BD_ADDR remote_bda);
extern tBTA_GATTC_CONN *bta_gattc_conn_find(BD_ADDR remote_bda);
extern tBTA_GATTC_CONN *bta_gattc_conn_find_alloc(BD_ADDR remote_bda);
extern BOOLEAN bta_gattc_conn_dealloc(BD_ADDR remote_bda);
extern bool bta_gattc_cache_load(tBTA_GATTC_CLCB *p_clcb);
extern void bta_gattc_cache_reset(BD_ADDR server_bda);
extern void bta_gattc_deinit(void);
#endif /* BTA_GATTC_INT_H */
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