rohc_decomp_internals.h File Reference

Internal structures for ROHC decompression. More...

#include "rohc_internal.h"
#include "rohc_decomp.h"
#include "rohc_traces_internal.h"
#include "feedback_create.h"
#include "crc.h"

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Data Structures
struct	d_statistics
	Some compressor statistics. More...
struct	rohc_ack_rate_limit
	The user configuration for feedback rate-limiting. More...
struct	rohc_ack_rate_limits
struct	rohc_ack_stats
struct	rohc_decomp
	The ROHC decompressor. More...
struct	rohc_decomp_crc_corr_ctxt
struct	rohc_decomp_crc
struct	rohc_decomp_volat_ctxt
	The volatile part of the ROHC decompression context. More...
struct	rohc_decomp_ctxt
	The ROHC decompression context. More...
struct	rohc_decomp_profile
	The ROHC decompression profile. More...

Macros
#define	D_NUM_PROFILES   10U
#define	rohc_decomp_warn(context, format, ...)
#define	rohc_decomp_debug(context, format, ...)
#define	rohc_decomp_dump_buf(context, descr, buf, buf_len)
#define	ROHC_MAX_MRRU   65535
#define	ROHC_MAX_ARRIVAL_TIMES   10U

Typedefs
typedef bool(*	rohc_decomp_new_context_t) (const struct rohc_decomp_ctxt *const context, void **const persist_ctxt, struct rohc_decomp_volat_ctxt *const volat_ctxt)
typedef void(*	rohc_decomp_free_context_t) (void *const persist_ctxt, const struct rohc_decomp_volat_ctxt *const volat_ctxt)
typedef rohc_packet_t(*	rohc_decomp_detect_pkt_type_t) (const struct rohc_decomp_ctxt *const context, const uint8_t *const rohc_packet, const size_t rohc_length, const size_t large_cid_len)
typedef bool(*	rohc_decomp_parse_pkt_t) (const struct rohc_decomp_ctxt *const context, const struct rohc_buf rohc_packet, const size_t large_cid_len, rohc_packet_t *const packet_type, struct rohc_decomp_crc *const extr_crc, void *const extr_bits, size_t *const rohc_hdr_len)
typedef rohc_status_t(*	rohc_decomp_decode_bits_t) (const struct rohc_decomp_ctxt *const context, const void *const extr_bits, const size_t payload_len, void *const decoded_values)
typedef rohc_status_t(*	rohc_decomp_build_hdrs_t) (const struct rohc_decomp *const decomp, const struct rohc_decomp_ctxt *const context, const rohc_packet_t packet_type, const struct rohc_decomp_crc *const extr_crc, const void *const decoded_values, const size_t payload_len, struct rohc_buf *const uncomp_hdrs, size_t *const uncomp_hdrs_len)
typedef void(*	rohc_decomp_update_ctxt_t) (struct rohc_decomp_ctxt *const context, const void *const decoded_values, const size_t payload_len, bool *const do_change_mode)
typedef bool(*	rohc_decomp_attempt_repair_t) (const struct rohc_decomp *const decomp, const struct rohc_decomp_ctxt *const context, const struct rohc_ts pkt_arrival_time, struct rohc_decomp_crc_corr_ctxt *const crc_corr, void *const extr_bits)
typedef uint32_t(*	rohc_decomp_get_sn_t) (const struct rohc_decomp_ctxt *const context)

Enumerations
enum	rohc_decomp_crc_corr_t { ROHC_DECOMP_CRC_CORR_SN_NONE = 0, ROHC_DECOMP_CRC_CORR_SN_WRAP = 1, ROHC_DECOMP_CRC_CORR_SN_UPDATES = 2 }
	The different correction algorithms available in case of CRC failure. More...

Detailed Description

Internal structures for ROHC decompression.

Author

Didier Barvaux didie.nosp@m.r.ba.nosp@m.rvaux.nosp@m.@tou.nosp@m.louse.nosp@m..viv.nosp@m.eris..nosp@m.com

Didier Barvaux didie.nosp@m.r@ba.nosp@m.rvaux.nosp@m..org

David Moreau from TAS

Macro Definition Documentation

D_NUM_PROFILES

#define D_NUM_PROFILES   10U

The number of ROHC profiles ready to be used

rohc_decomp_debug

#define rohc_decomp_debug	(		context,
			format,
			...
	)

Value:

rohc_debug((context)->decompressor, ROHC_TRACE_DECOMP, \
                   (context)->profile->id, \
                   format, ##__VA_ARGS__)

Print a debug trace for the given decompression context

rohc_decomp_dump_buf

#define rohc_decomp_dump_buf	(		context,
			descr,
			buf,
			buf_len
	)

Value:

do { \
                if(((context)->decompressor->features & ROHC_DECOMP_FEATURE_DUMP_PACKETS) != 0) { \
                        rohc_dump_buf((context)->decompressor->trace_callback, \
                                      (context)->decompressor->trace_callback_priv, \
                                      ROHC_TRACE_DECOMP, ROHC_TRACE_DEBUG, \
                                      descr, buf, buf_len); \
                } \
        } while(0)

Dump a buffer for the given compression context

rohc_decomp_warn

#define rohc_decomp_warn	(		context,
			format,
			...
	)

Value:

rohc_warning((context)->decompressor, ROHC_TRACE_DECOMP, \
                     (context)->profile->id, \
                     format, ##__VA_ARGS__)

Print a warning trace for the given decompression context

ROHC_MAX_ARRIVAL_TIMES

#define ROHC_MAX_ARRIVAL_TIMES   10U

The number of last packets to record arrival times for

ROHC_MAX_MRRU

#define ROHC_MAX_MRRU   65535

The maximal value for MRRU

Typedef Documentation

rohc_decomp_attempt_repair_t

typedef bool(* rohc_decomp_attempt_repair_t) (const struct rohc_decomp *const decomp, const struct rohc_decomp_ctxt *const context, const struct rohc_ts pkt_arrival_time, struct rohc_decomp_crc_corr_ctxt *const crc_corr, void *const extr_bits)

rohc_decomp_build_hdrs_t

typedef rohc_status_t(* rohc_decomp_build_hdrs_t) (const struct rohc_decomp *const decomp, const struct rohc_decomp_ctxt *const context, const rohc_packet_t packet_type, const struct rohc_decomp_crc *const extr_crc, const void *const decoded_values, const size_t payload_len, struct rohc_buf *const uncomp_hdrs, size_t *const uncomp_hdrs_len)

rohc_decomp_decode_bits_t

typedef rohc_status_t(* rohc_decomp_decode_bits_t) (const struct rohc_decomp_ctxt *const context, const void *const extr_bits, const size_t payload_len, void *const decoded_values)

rohc_decomp_detect_pkt_type_t

typedef rohc_packet_t(* rohc_decomp_detect_pkt_type_t) (const struct rohc_decomp_ctxt *const context, const uint8_t *const rohc_packet, const size_t rohc_length, const size_t large_cid_len)

rohc_decomp_free_context_t

typedef void(* rohc_decomp_free_context_t) (void *const persist_ctxt, const struct rohc_decomp_volat_ctxt *const volat_ctxt)

rohc_decomp_get_sn_t

typedef uint32_t(* rohc_decomp_get_sn_t) (const struct rohc_decomp_ctxt *const context)

rohc_decomp_new_context_t

typedef bool(* rohc_decomp_new_context_t) (const struct rohc_decomp_ctxt *const context, void **const persist_ctxt, struct rohc_decomp_volat_ctxt *const volat_ctxt)

rohc_decomp_parse_pkt_t

typedef bool(* rohc_decomp_parse_pkt_t) (const struct rohc_decomp_ctxt *const context, const struct rohc_buf rohc_packet, const size_t large_cid_len, rohc_packet_t *const packet_type, struct rohc_decomp_crc *const extr_crc, void *const extr_bits, size_t *const rohc_hdr_len)

rohc_decomp_update_ctxt_t

typedef void(* rohc_decomp_update_ctxt_t) (struct rohc_decomp_ctxt *const context, const void *const decoded_values, const size_t payload_len, bool *const do_change_mode)

Enumeration Type Documentation

rohc_decomp_crc_corr_t

enum rohc_decomp_crc_corr_t

The different correction algorithms available in case of CRC failure.

Enumerator
ROHC_DECOMP_CRC_CORR_SN_NONE	No correction
ROHC_DECOMP_CRC_CORR_SN_WRAP	Correction of SN wraparound
ROHC_DECOMP_CRC_CORR_SN_UPDATES	Correction of incorrect SN updates