rohc_decomp_detect_packet.c File Reference

Functions related to packet detection. More...

#include "rohc_decomp_detect_packet.h"
#include "rohc_bit_ops.h"

Include dependency graph for rohc_decomp_detect_packet.c:

Defines
#define	D_SEGMENT   (0xfe >> 1)
#define	D_PADDING   0xe0
#define	D_IR_PACKET   (0xfc >> 1)
#define	D_IR_DYN_PACKET   0xf8
Functions
bool	rohc_decomp_packet_is_segment (const uint8_t *const data)
	Find out whether the field is a segment field or not.
bool	rohc_decomp_packet_is_padding (const uint8_t *const data)
	Find out whether the field is a padding field or not.
bool	rohc_decomp_packet_is_ir (const uint8_t *const data, const size_t len)
	Find out whether a ROHC packet is an IR packet or not.
bool	rohc_decomp_packet_is_irdyn (const uint8_t *const data, const size_t len)
	Find out whether a ROHC packet is an IR-DYN packet or not.
bool	rohc_decomp_packet_is_uo0 (const uint8_t *const data, const size_t len)
	Find out whether a ROHC packet is an UO-0 packet or not.
bool	rohc_decomp_packet_is_uo1 (const uint8_t *const data, const size_t len)
	Find out whether a ROHC packet is an UO-1* packet or not.
bool	rohc_decomp_packet_is_uo1_ts (const uint8_t *const data, const size_t len)
	Find out whether a ROHC packet is an UO-1-TS packet or not.
bool	rohc_decomp_packet_is_uor2 (const uint8_t *const data, const size_t len)
	Find out whether a ROHC packet is an UOR-2* packet or not.
bool	rohc_decomp_packet_is_uor2_ts (const uint8_t *const data, const size_t data_len, const size_t large_cid_len)
	Find out whether a ROHC packet is an UOR-2-TS packet or not.

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Detailed Description

Functions related to packet detection.

Author:

Didier Barvaux <didier.barvaux@toulouse.viveris.com>

Didier Barvaux <didier@barvaux.org>

---

Define Documentation

#define D_IR_DYN_PACKET   0xf8

The magic byte to find out whether a ROHC packet is an IR-DYN packet

#define D_IR_PACKET   (0xfc >> 1)

The magic bits to find out whether a ROHC packet is an IR packet or not

#define D_PADDING   0xe0

The magic byte to find out whether a field is a padding field or not

#define D_SEGMENT   (0xfe >> 1)

The magic bits to find out whether a field is a segment field or not

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Function Documentation

bool rohc_decomp_packet_is_ir	(	const uint8_t *const	data,
		const size_t	len
	)

Find out whether a ROHC packet is an IR packet or not.

Parameters:

data	The ROHC packet to analyze
len	The length of the ROHC packet

Returns:

Whether the ROHC packet is an IR packet or not

bool rohc_decomp_packet_is_irdyn	(	const uint8_t *const	data,
		const size_t	len
	)

Find out whether a ROHC packet is an IR-DYN packet or not.

Parameters:

data	The ROHC packet to analyze
len	The length of the ROHC packet

Returns:

Whether the ROHC packet is an IR-DYN packet or not

bool rohc_decomp_packet_is_padding

(

const uint8_t *const

data

)

Find out whether the field is a padding field or not.

Parameters:

data	The field to analyze

Returns:

Whether the field is a padding field or not

bool rohc_decomp_packet_is_segment

(

const uint8_t *const

data

)

Find out whether the field is a segment field or not.

Parameters:

data	The field to analyze

Returns:

Whether the field is a segment field or not

bool rohc_decomp_packet_is_uo0	(	const uint8_t *const	data,
		const size_t	len
	)

Find out whether a ROHC packet is an UO-0 packet or not.

Parameters:

data	The ROHC packet to analyze
len	The length of the ROHC packet

Returns:

Whether the ROHC packet is an UO-0 packet or not

bool rohc_decomp_packet_is_uo1	(	const uint8_t *const	data,
		const size_t	len
	)

Find out whether a ROHC packet is an UO-1* packet or not.

Parameters:

data	The ROHC packet to analyze
len	The length of the ROHC packet

Returns:

Whether the ROHC packet is an UO-1* packet or not

bool rohc_decomp_packet_is_uo1_ts	(	const uint8_t *const	data,
		const size_t	len
	)

Find out whether a ROHC packet is an UO-1-TS packet or not.

Check the T field that discriminates between UO-1-TS and UO-1-ID.

Parameters:

data	The ROHC packet to analyze
len	The length of the ROHC packet

Returns:

Whether the ROHC packet is an UO-1-TS packet or not

bool rohc_decomp_packet_is_uor2	(	const uint8_t *const	data,
		const size_t	len
	)

Find out whether a ROHC packet is an UOR-2* packet or not.

Parameters:

data	The ROHC packet to analyze
len	The length of the ROHC packet

Returns:

Whether the ROHC packet is an UOR-2* packet or not

bool rohc_decomp_packet_is_uor2_ts	(	const uint8_t *const	data,
		const size_t	data_len,
		const size_t	large_cid_len
	)

Find out whether a ROHC packet is an UOR-2-TS packet or not.

Check the T field that discriminates between UOR-2-TS and UOR-2-ID.

Parameters:

data	The ROHC packet to analyze
data_len	The length of the ROHC packet
large_cid_len	The length of the optional large CID field

Returns:

Whether the ROHC packet is an UOR-2-TS packet or not