#ifndef __CORE_TLV_H__
#define __CORE_TLV_H__

#include "core.h"
#include "core_pool.h"

#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */


/* UTIS project specific parameters */
#define UPDU_IE_TYPE_1_CODE         0x01
#define UPDU_IE_TYPE_2_CODE         0x02
#define UPDU_IE_TYPE_3_CODE         0x00

#define UPDU_IE_TYPE_1_MAX_SIZE     0x40
#define UPDU_IE_TYPE_2_MAX_SIZE     0x4000
#define UPDU_IE_TYPE_3_MAX_SIZE     0x40000000


#define TLV_MODE_UTIS               2
#define TLV_MODE_WIFI               3
#define TLV_MODE_WMX_R4_R6          4
#define TLV_MODE_WMX_R1             5


#define NUM_OF_TLV_NODE             100

/* tlv_t struncture */

typedef struct _tlv_t
{
    /* for tlv management */
    struct _tlv_t* head;
    struct _tlv_t* tail;  /* this is used only for head tlv_t */
    struct _tlv_t* next;

    struct _tlv_t* parent;
    struct _tlv_t* embedded;


    /* tlv basic element */
    c_uint32_t   type;
    c_uint32_t  length;
    void*   value;

    /* can be needed in encoding tlv_t*/
    c_uint8_t   buff_allocated;
    c_uint32_t  buff_len;
    c_uint8_t*  buff_ptr;
    c_uint8_t*  buff;
} tlv_t;

#define tlv_type(pTlv) pTlv->type
#define tlv_length(pTlv) pTlv->length
#define tlv_value(pTlv) pTlv->value

#define tlv_wmx_r4_r6_type(pTlv) (pTlv->type & 0x7FFF)
#define tlv_wmx_r4_r6_tc(pTlv) (pTlv->type & 0x8000)
#define tlv_wmx_r4_r6_set_tc(pTlv) (pTlv->type | 0x8000)
#define tlv_wmx_r4_r6_clr_tc(pTlv) (pTlv->type & 0x7FFF)


/* tlv_t pool related functions */
CORE_DECLARE(tlv_t*) tlv_get(void);
CORE_DECLARE(void) tlv_free(tlv_t *pTlv);
CORE_DECLARE(void) tlv_free_all(tlv_t *rootTlv);

CORE_DECLARE(status_t) tlv_init(void);
CORE_DECLARE(status_t) tlv_final(void);

/* tlv_t encoding functions */
CORE_DECLARE(c_uint8_t*) tlv_write_to_buff(
        c_uint8_t *blk, c_uint32_t type, c_uint32_t length,
        c_uint8_t *value, c_uint8_t mode);
CORE_DECLARE(tlv_t*) tlv_add(
        tlv_t *headTlv, c_uint32_t type, c_uint32_t length, c_uint8_t *value);
CORE_DECLARE(tlv_t*) tlv_create_buff_enabled_tlv(
        c_uint8_t *buff, c_uint32_t buff_len,
        c_uint32_t type, c_uint32_t length, c_uint8_t *value);
CORE_DECLARE(tlv_t*) tlv_embed(
        tlv_t *parent_tlv, c_uint32_t type, c_uint32_t length, c_uint8_t *value);
CORE_DECLARE(c_uint32_t) tlv_render(
        tlv_t *rootTlv, c_uint8_t *blk, c_uint32_t length, c_uint8_t mode);


/* tlv_t parsing functions */
CORE_DECLARE(tlv_t*) tlv_parse_tlv_block(c_uint32_t length,
        c_uint8_t *blk, c_uint8_t mode);
CORE_DECLARE(tlv_t*) tlv_parse_embedded_tlv_block(tlv_t* pTlv, c_uint8_t mode);


/* tlv operation-related function */
CORE_DECLARE(tlv_t*) tlv_find(tlv_t* pTlv, c_uint32_t type);
CORE_DECLARE(tlv_t*) tlv_find_root(tlv_t* pTlv);
CORE_DECLARE(c_uint32_t) tlv_pool_avail(void);
CORE_DECLARE(c_uint32_t) tlv_calc_length(tlv_t *p_tlv, c_uint8_t mode);
CORE_DECLARE(c_uint32_t) tlv_calc_count(tlv_t *p_tlv);
CORE_DECLARE(c_uint8_t) tlv_value_8(tlv_t *tlv);
CORE_DECLARE(c_uint16_t) tlv_value_16(tlv_t *tlv);
CORE_DECLARE(c_uint32_t) tlv_value_32(tlv_t *tlv);

#ifdef __cplusplus
}
#endif /* __cplusplus */

#endif /* !__CORE_TLV_H__ */