Osmocom Packet control Unit (PCU): Network-side GPRS (RLC/MAC); BTS- or BSC-colocated https://osmocom.org/projects/osmopcu
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osmo-pcu/src/decoding.h

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/* decoding
*
* Copyright (C) 2012 Ivan Klyuchnikov
* Copyright (C) 2012 Andreas Eversberg <jolly@eversberg.eu>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#pragma once
#ifdef __cplusplus
extern "C" {
#endif
#include "gsm_rlcmac.h"
#include "coding_scheme.h"
#ifdef __cplusplus
}
#endif
#include <stdint.h>
struct bitvec;
#ifdef __cplusplus
class Decoding {
public:
/* represents (parts) LLC PDUs within one RLC Data block */
struct RlcData {
uint8_t offset;
uint8_t length;
bool is_complete; /* if this PDU ends in this block */
};
static int rlc_data_from_ul_data(
const struct gprs_rlc_data_block_info *rdbi,
enum CodingScheme cs, const uint8_t *data, RlcData *chunks,
unsigned int chunks_size, uint32_t *tlli);
static void extract_rbb(const struct bitvec *rbb, char *show_rbb);
static int rlc_parse_ul_data_header_egprs_type_3(
struct gprs_rlc_data_info *rlc,
const uint8_t *data,
const enum CodingScheme &cs);
static int rlc_parse_ul_data_header_egprs_type_2(
struct gprs_rlc_data_info *rlc,
const uint8_t *data,
const enum CodingScheme &cs);
static int rlc_parse_ul_data_header_egprs_type_1(
struct gprs_rlc_data_info *rlc,
const uint8_t *data,
const enum CodingScheme &cs);
static int rlc_parse_ul_data_header_gprs(
struct gprs_rlc_data_info *rlc,
const uint8_t *data,
const enum CodingScheme &cs);
static int rlc_parse_ul_data_header(struct gprs_rlc_data_info *rlc,
const uint8_t *data, enum CodingScheme cs);
static unsigned int rlc_copy_to_aligned_buffer(
const struct gprs_rlc_data_info *rlc,
unsigned int data_block_idx,
const uint8_t *src, uint8_t *buffer);
static const uint8_t *rlc_get_data_aligned(
const struct gprs_rlc_data_info *rlc,
unsigned int data_block_idx,
const uint8_t *src, uint8_t *buffer);
static int decode_egprs_acknack_bits(
const EGPRS_AckNack_Desc_t *desc,
struct bitvec *bits, int *bsn_begin, int *bsn_end,
struct gprs_rlc_dl_window *window);
static int decode_gprs_acknack_bits(
const Ack_Nack_Description_t *desc,
bitvec *bits, int *bsn_begin, int *bsn_end,
gprs_rlc_dl_window *window);
};
#endif /* #ifdef __cplusplus */
#ifdef __cplusplus
extern "C" {
#endif
uint8_t get_ms_class_by_capability(MS_Radio_Access_capability_t *cap);
uint8_t get_egprs_ms_class_by_capability(MS_Radio_Access_capability_t *cap);
#ifdef __cplusplus
}
#endif