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:
Data Structures | |
| struct | rohc_uncomp_extr_bits |
| struct | rohc_uncomp_decoded |
Functions | |
| static bool | uncomp_new_context (const struct rohc_decomp_ctxt *const context, void **const persist_ctxt, struct rohc_decomp_volat_ctxt *const volat_ctxt) |
| Create the Uncompressed volatile and persistent parts of the context. More... | |
| static void | uncomp_free_context (void *const persist_ctxt, const struct rohc_decomp_volat_ctxt *const volat_ctxt) |
| Destroy profile-specific data, nothing to destroy for the uncompressed profile. More... | |
| 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. More... | |
| static bool | uncomp_parse_pkt (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, struct rohc_uncomp_extr_bits *const extr_bits, size_t *const rohc_hdr_len) |
| Parse one IR or Normal packet for the Uncompressed profile. More... | |
| static bool | uncomp_parse_ir (const struct rohc_decomp_ctxt *const context, const struct rohc_buf rohc_packet, const size_t large_cid_len, struct rohc_decomp_crc *const extr_crc, struct rohc_uncomp_extr_bits *const extr_bits, size_t *const rohc_hdr_len) |
| Parse one IR packet for the Uncompressed profile. More... | |
| static bool | uncomp_parse_normal (const struct rohc_decomp_ctxt *const context, const struct rohc_buf rohc_packet, const size_t large_cid_len, struct rohc_decomp_crc *const extr_crc, struct rohc_uncomp_extr_bits *const extr_bits, size_t *const rohc_hdr_len) |
| Parse one Normal packet for the Uncompressed profile. More... | |
| static bool | uncomp_decode_bits (const struct rohc_decomp_ctxt *const context, const struct rohc_uncomp_extr_bits *const extr_bits, const size_t payload_len, struct rohc_uncomp_decoded *const decoded) |
| Decode values from extracted bits for the Uncompressed profile. More... | |
| static rohc_status_t | uncomp_build_hdrs (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 struct rohc_uncomp_decoded *const decoded, const size_t payload_len, struct rohc_buf *const uncomp_hdrs, size_t *const uncomp_hdrs_len) |
| Build the uncompressed headers for the Uncompressed profile. More... | |
| static void | uncomp_update_ctxt (struct rohc_decomp_ctxt *const context, const struct rohc_uncomp_decoded *const decoded, const size_t payload_len, bool *const do_change_mode) |
| Update the decompression context with the infos of current packet. More... | |
| static bool | uncomp_attempt_repair (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, struct rohc_uncomp_extr_bits *const extr_bits) |
| Attempt a packet/context repair upon CRC failure. More... | |
| 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. More... | |
Variables | |
| const struct rohc_decomp_profile | d_uncomp_profile |
| Define the decompression part of the Uncompressed profile as described in the RFC 3095. More... | |
Detailed Description
ROHC decompression context for the uncompressed profile.
Function Documentation
|
static |
Attempt a packet/context repair upon CRC failure.
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 pkt_arrival_time The arrival time of the ROHC packet that caused the CRC failure [in,out] crc_corr The context for corrections upon CRC failures [in,out] extr_bits The bits extracted from the ROHC header
- Returns
- true if repair is possible, false if not
|
static |
Build the uncompressed headers 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 packet_type The type of ROHC packet extr_crc The CRC bits extracted from the ROHC header decoded The values decoded from ROHC header payload_len The length of the packet payload (in bytes) [out] uncomp_hdrs The uncompressed headers being built [out] uncomp_hdrs_len The length of the uncompressed headers written into the buffer
- Returns
- Possible values:
- ROHC_STATUS_OK if headers are built successfully,
- ROHC_STATUS_OUTPUT_TOO_SMALL if uncomp_packet is too small
|
static |
Decode values from extracted bits 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 extr_bits The bits extracted from the ROHC packet payload_len The length of the packet payload (in bytes) [out] decoded The corresponding decoded values
- Returns
- true if decoding is successful, false otherwise
|
static |
Detect the type of ROHC packet 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 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 |
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
-
persist_ctxt The persistent part of the decompression context volat_ctxt The volatile part of the decompression 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 |
Create the Uncompressed volatile and persistent parts of the context.
This function is one of the functions that must exist in one profile for the framework to work.
- Parameters
-
context The decompression context [out] persist_ctxt The persistent part of the decompression context [out] volat_ctxt The volatile part of the decompression context
- Returns
- true if the Uncompressed context was successfully created, false if a problem occurred
|
static |
Parse one IR 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] extr_crc The CRC extracted from the ROHC packet [out] extr_bits The bits extracted from the ROHC packet [out] rohc_hdr_len The length of the ROHC header (in bytes)
- Returns
- true if parsing was successful, false if packet was malformed
|
static |
Parse 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] extr_crc The CRC extracted from the ROHC packet [out] extr_bits The bits extracted from the ROHC packet [out] rohc_hdr_len The length of the ROHC header (in bytes)
- Returns
- true if parsing was successful, false if packet was malformed
|
static |
Parse 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
-
context The decompression context rohc_packet The ROHC packet to parse large_cid_len The length of the optional large CID field [in,out] packet_type IN: The type of the ROHC packet to parse OUT: The type of the parsed ROHC packet [out] extr_crc The CRC bits extracted from the ROHC packet [out] extr_bits The bits extracted from the ROHC packet [out] rohc_hdr_len The length of the ROHC header (in bytes)
- Returns
- true if parsing was successful, false if packet was malformed
|
static |
Update the decompression context with the infos of current packet.
This function is one of the functions that must exist in one profile for the framework to work.
- Parameters
-
context The decompression context decoded The decoded values to update in the context payload_len The length of the packet payload (in bytes) [out] do_change_mode Whether the profile context wants to change its operational mode or not
Variable Documentation
| const struct rohc_decomp_profile d_uncomp_profile |
Initial value:
=
{
.id = ROHC_PROFILE_UNCOMPRESSED,
.msn_max_bits = 0,
.new_context = uncomp_new_context,
.free_context = uncomp_free_context,
.detect_pkt_type = uncomp_detect_pkt_type,
.parse_pkt = (rohc_decomp_parse_pkt_t) uncomp_parse_pkt,
.decode_bits = (rohc_decomp_decode_bits_t) uncomp_decode_bits,
.build_hdrs = (rohc_decomp_build_hdrs_t) uncomp_build_hdrs,
.update_ctxt = (rohc_decomp_update_ctxt_t) uncomp_update_ctxt,
.attempt_repair = (rohc_decomp_attempt_repair_t) uncomp_attempt_repair,
.get_sn = uncomp_get_sn,
}
static bool uncomp_parse_pkt(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, struct rohc_uncomp_extr_bits *const extr_bits, size_t *const rohc_hdr_len)
Parse one IR or Normal packet for the Uncompressed profile.
Definition: d_uncompressed.c:256
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)
Definition: rohc_decomp_internals.h:386
static bool uncomp_new_context(const struct rohc_decomp_ctxt *const context, void **const persist_ctxt, struct rohc_decomp_volat_ctxt *const volat_ctxt)
Create the Uncompressed volatile and persistent parts of the context.
Definition: d_uncompressed.c:152
bool(* 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)
Definition: rohc_decomp_internals.h:364
static bool uncomp_decode_bits(const struct rohc_decomp_ctxt *const context, const struct rohc_uncomp_extr_bits *const extr_bits, const size_t payload_len, struct rohc_uncomp_decoded *const decoded)
Decode values from extracted bits for the Uncompressed profile.
Definition: d_uncompressed.c:416
static void uncomp_free_context(void *const persist_ctxt, const struct rohc_decomp_volat_ctxt *const volat_ctxt)
Destroy profile-specific data, nothing to destroy for the uncompressed profile.
Definition: d_uncompressed.c:198
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.
Definition: d_uncompressed.c:543
static bool uncomp_attempt_repair(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, struct rohc_uncomp_extr_bits *const extr_bits)
Attempt a packet/context repair upon CRC failure.
Definition: d_uncompressed.c:520
Definition: rohc.h:215
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.
Definition: d_uncompressed.c:219
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)
Definition: rohc_decomp_internals.h:355
static rohc_status_t uncomp_build_hdrs(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 struct rohc_uncomp_decoded *const decoded, const size_t payload_len, struct rohc_buf *const uncomp_hdrs, size_t *const uncomp_hdrs_len)
Build the uncompressed headers for the Uncompressed profile.
Definition: d_uncompressed.c:451
static void uncomp_update_ctxt(struct rohc_decomp_ctxt *const context, const struct rohc_uncomp_decoded *const decoded, const size_t payload_len, bool *const do_change_mode)
Update the decompression context with the infos of current packet.
Definition: d_uncompressed.c:497
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)
Definition: rohc_decomp_internals.h:380
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)
Definition: rohc_decomp_internals.h:370
Define the decompression part of the Uncompressed profile as described in the RFC 3095.
