ROHC decompression context for the uncompressed profile. More...

#include "rohc_decomp.h"
#include "rohc_decomp_internals.h"
#include "rohc_bit_ops.h"
#include "rohc_traces_internal.h"
#include "crc.h"
#include "rohc_decomp_detect_packet.h"
#include <string.h>

Include dependency graph for d_uncompressed.c:

Functions
static rohc_packet_t	uncomp_detect_pkt_type (const struct rohc_decomp_ctxt const context, const uint8_t const rohc_packet, const size_t rohc_length, const size_t large_cid_len)
	Detect the type of ROHC packet for the Uncompressed profile.
static rohc_status_t	uncomp_decode (struct rohc_decomp const decomp, struct rohc_decomp_ctxt const context, const struct rohc_buf rohc_packet, const size_t add_cid_len, const size_t large_cid_len, struct rohc_buf const uncomp_packet, rohc_packet_t const packet_type)
	Decode one IR or Normal packet for the Uncompressed profile.
static rohc_status_t	uncomp_decode_ir (struct rohc_decomp const decomp, struct rohc_decomp_ctxt context, const struct rohc_buf rohc_packet, const size_t add_cid_len, const size_t large_cid_len, struct rohc_buf *const uncomp_packet)
	Decode one IR packet for the Uncompressed profile.
static rohc_status_t	uncomp_decode_normal (struct rohc_decomp_ctxt context, const struct rohc_buf rohc_packet, const size_t large_cid_len, struct rohc_buf const uncomp_packet)
	Decode one Normal packet for the Uncompressed profile.
static uint32_t	uncomp_get_sn (const struct rohc_decomp_ctxt *const context)
	Get the reference SN value of the context. Always return 0 for the uncompressed profile.
static void *	uncomp_new_context (const struct rohc_decomp_ctxt *const context)
	Allocate profile-specific data, nothing to allocate for the uncompressed profile.
static void	uncomp_free_context (void *context)
	Destroy profile-specific data, nothing to destroy for the uncompressed profile.
Variables
struct rohc_decomp_profile	d_uncomp_profile
	Define the decompression part of the Uncompressed profile as described in the RFC 3095.

Detailed Description

ROHC decompression context for the uncompressed profile.

Author:: Didier Barvaux <didier.barvaux@toulouse.viveris.com>; Didier Barvaux <didier@barvaux.org>

Function Documentation

static rohc_status_t uncomp_decode	(	struct rohc_decomp *const	decomp,
		struct rohc_decomp_ctxt *const	context,
		const struct rohc_buf	rohc_packet,
		const size_t	add_cid_len,
		const size_t	large_cid_len,
		struct rohc_buf *const	uncomp_packet,
		rohc_packet_t *const	packet_type
	)		`[static]`

Decode one IR or Normal packet for the Uncompressed profile.

This function is one of the functions that must exist in one profile for the framework to work.

Parameters:

	decomp	The ROHC decompressor
	context	The decompression context
	rohc_packet	The ROHC packet to decode
	add_cid_len	The length of the optional Add-CID field
	large_cid_len	The length of the large CID field
[out]	uncomp_packet	The uncompressed packet
	packet_type	IN: The type of the ROHC packet to parse OUT: The type of the parsed ROHC packet

Returns:: ROHC_STATUS_OK if packet is successfully decoded, ROHC_STATUS_MALFORMED if packet is malformed, ROHC_STATUS_BAD_CRC if a CRC error occurs ROHC_STATUS_ERROR if an error occurs

static rohc_status_t uncomp_decode_ir	(	struct rohc_decomp *const	decomp,
		struct rohc_decomp_ctxt *	context,
		const struct rohc_buf	rohc_packet,
		const size_t	add_cid_len,
		const size_t	large_cid_len,
		struct rohc_buf *const	uncomp_packet
	)		`[static]`

Decode one IR packet for the Uncompressed profile.

Parameters:

	decomp	The ROHC decompressor
	context	The decompression context
	rohc_packet	The ROHC packet to decode
	add_cid_len	The length of the optional Add-CID field
	large_cid_len	The length of the large CID field
[out]	uncomp_packet	The uncompressed packet

Returns:: ROHC_STATUS_OK if packet is successfully decoded, ROHC_STATUS_MALFORMED if packet is malformed, ROHC_STATUS_BAD_CRC if CRC in IR header is wrong

static rohc_status_t uncomp_decode_normal	(	struct rohc_decomp_ctxt *	context,
		const struct rohc_buf	rohc_packet,
		const size_t	large_cid_len,
		struct rohc_buf *const	uncomp_packet
	)		`[static]`

Decode one Normal packet for the Uncompressed profile.

Parameters:

	context	The decompression context
	rohc_packet	The ROHC packet to decode
	large_cid_len	The length of the optional large CID field
[out]	uncomp_packet	The uncompressed packet

Returns:: ROHC_STATUS_OK if packet is successfully decoded, ROHC_STATUS_MALFORMED if packet is malformed, ROHC_STATUS_ERROR if another error occurs

static rohc_packet_t uncomp_detect_pkt_type	(	const struct rohc_decomp_ctxt *const	context,
		const uint8_t *const	rohc_packet,
		const size_t	rohc_length,
		const size_t	large_cid_len
	)		`[static]`

Detect the type of ROHC packet for the Uncompressed profile.

Parameters:

context	The decompression context
rohc_packet	The ROHC packet
rohc_length	The length of the ROHC packet
large_cid_len	The length of the optional large CID field

Returns:: The packet type

static void uncomp_free_context ( void * context ) [static]

Destroy profile-specific data, nothing to destroy for the uncompressed profile.

This function is one of the functions that must exist in one profile for the framework to work.

Parameters:

context The compression context

static uint32_t uncomp_get_sn ( const struct rohc_decomp_ctxt *const context ) [static]

Get the reference SN value of the context. Always return 0 for the uncompressed profile.

This function is one of the functions that must exist in one profile for the framework to work.

Parameters:

context The decompression context

Returns:: The reference SN value

static void* uncomp_new_context ( const struct rohc_decomp_ctxt *const context ) [static]

Allocate profile-specific data, nothing to allocate for the uncompressed profile.

This function is one of the functions that must exist in one profile for the framework to work.

Returns:: The newly-created generic decompression context

Variable Documentation

struct rohc_decomp_profile d_uncomp_profile

Initial value:

{
        .id              = ROHC_PROFILE_UNCOMPRESSED, 
        .new_context     = uncomp_new_context,
        .free_context    = uncomp_free_context,
        .decode          = uncomp_decode,
        .detect_pkt_type = uncomp_detect_pkt_type,
        .get_sn          = uncomp_get_sn,
}

Define the decompression part of the Uncompressed profile as described in the RFC 3095.

Functions

Variables

Detailed Description

Function Documentation

Variable Documentation