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#ifndef _MESH_PACKET_H__
#define _MESH_PACKET_H__
#include <stdint.h>
#include <stdbool.h>
#include "rbc_mesh.h"
#include "toolchain.h"
#include "dfu_packet.h"


#define MESH_UUID                           (0xFEE4)
#define MESH_ADV_DATA_TYPE                  (0x16)
#define BLE_ADV_PACKET_PAYLOAD_MAX_LENGTH   (31)
#define BLE_AD_DATA_OVERHEAD                (1)
#define MESH_DFU_DATA_OVERHEAD              (3)

#define MESH_PACKET_BLE_OVERHEAD            (BLE_GAP_ADDR_LEN)                                                      /* overhead before advertisement payload */
#define MESH_PACKET_ADV_OVERHEAD            (1 /* adv_type */ + 2 /* UUID */ + 2 /* handle */ + 2 /* version */)    /* overhead inside adv data */
#define MESH_PACKET_OVERHEAD                (MESH_PACKET_BLE_OVERHEAD + 1 + MESH_PACKET_ADV_OVERHEAD)               /* mesh packet total overhead */
/******************************************************************************
* Public typedefs
******************************************************************************/
typedef __packed_armcc struct
{
    uint8_t type : 4;
    uint8_t _rfu1 : 2;
    uint8_t addr_type : 1;
    uint8_t _rfu2 : 1;
    uint8_t length;
    uint8_t _rfu3;
} __packed_gcc ble_packet_header_t;

typedef __packed_armcc struct
{
    uint8_t                 adv_data_length;
    uint8_t                 adv_data_type;
    uint8_t                 data[];
} __packed_gcc ble_ad_t;

typedef __packed_armcc struct
{
    uint8_t                 adv_data_length;
    uint8_t                 adv_data_type;
    uint16_t                mesh_uuid;
    rbc_mesh_value_handle_t handle;
    uint16_t                version;
    uint8_t                 data[RBC_MESH_VALUE_MAX_LEN];
} __packed_gcc mesh_adv_data_t;

typedef __packed_armcc struct
{
    uint8_t                 adv_data_length;
    uint8_t                 adv_data_type;
    uint16_t                mesh_uuid;
    dfu_packet_t            dfu_packet;
} __packed_gcc mesh_dfu_adv_data_t;

typedef __packed_armcc struct
{
    ble_packet_header_t header;
    uint8_t addr[6];
    uint8_t payload[BLE_ADV_PACKET_PAYLOAD_MAX_LENGTH];
} __packed_gcc mesh_packet_t;

/******************************************************************************
* Interface functions
******************************************************************************/
void mesh_packet_init(void);

void mesh_packet_on_ts_begin(void);

bool mesh_packet_acquire(mesh_packet_t** pp_packet);

/** Get pointer to start of packet which p_buf_pointer is pointing into */
mesh_packet_t* mesh_packet_get_aligned(void* p_buf_pointer);

bool mesh_packet_ref_count_inc(mesh_packet_t* p_packet);

bool mesh_packet_ref_count_dec(mesh_packet_t* p_packet);

uint8_t mesh_packet_ref_count_get(mesh_packet_t* p_packet);

uint32_t mesh_packet_set_local_addr(mesh_packet_t* p_packet);

uint32_t mesh_packet_build(mesh_packet_t* p_packet,
        rbc_mesh_value_handle_t handle,
        uint16_t version,
        uint8_t* data,
        uint8_t length);

uint32_t mesh_packet_adv_data_sanitize(mesh_packet_t* p_packet);

mesh_adv_data_t* mesh_packet_adv_data_get(mesh_packet_t* p_packet);

rbc_mesh_value_handle_t mesh_packet_handle_get(mesh_packet_t* p_packet);

bool mesh_packet_has_additional_data(mesh_packet_t* p_packet);

/** Fill address field with local addr, and sanitize adv-data */
void mesh_packet_take_ownership(mesh_packet_t* p_packet);

#endif /* _MESH_PACKET_H__ */

