#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include <stdlib.h>
#include <errno.h>
#include <osmocom/core/bits.h>
#include <osmocom/core/conv.h>
#include <osmocom/core/utils.h>
#include <osmocom/core/crcgen.h>
#include <osmocom/core/endian.h>
#include <osmocom/gsm/protocol/gsm_44_060.h>
#include <osmocom/gsm/protocol/gsm_04_08.h>
#include <osmocom/gsm/gsm0503.h>
#include <osmocom/codec/codec.h>
#include <osmocom/coding/gsm0503_interleaving.h>
#include <osmocom/coding/gsm0503_mapping.h>
#include <osmocom/coding/gsm0503_tables.h>
#include <osmocom/coding/gsm0503_coding.h>
#include <osmocom/coding/gsm0503_parity.h>
#include <osmocom/coding/gsm0503_amr_dtx.h>

Data Structures
union	gprs_rlc_ul_hdr_egprs
	union across the three different EGPRS Uplink header types More...

union	gprs_rlc_dl_hdr_egprs
	union across the three different EGPRS Downlink header types More...

struct	gsm0503_mcs_code
	Structure describing a Modulation and Coding Scheme. More...

Macros
#define	EGPRS_HDR_UPP_MAX 54

#define	EGPRS_HDR_C_MAX 162

#define	EGPRS_HDR_HC_MAX 160

#define	EGPRS_DATA_U_MAX 612

#define	EGPRS_DATA_C_MAX 1836

#define	EGPRS_DATA_DC_MAX 1248

#define	EGPRS_DATA_C1 612

#define	EGPRS_DATA_C2 EGPRS_DATA_C1

Functions
static int	osmo_conv_decode_ber_punctured (const struct osmo_conv_code code, const sbit_t input, ubit_t output, int n_errors, int n_bits_total, const uint8_t data_punc)
	Convolutional Decode + compute BER for punctured codes. More...

static int	osmo_conv_decode_ber (const struct osmo_conv_code code, const sbit_t input, ubit_t output, int n_errors, int *n_bits_total)
	Convolutional Decode + compute BER for non-punctured codes. More...

static int	_xcch_decode_cB (uint8_t l2_data, const sbit_t cB, int n_errors, int n_bits_total)
	convenience wrapper for decoding coded bits More...

static int	_xcch_encode_cB (ubit_t cB, const uint8_t l2_data)
	convenience wrapper for encoding to coded bits More...

int	gsm0503_xcch_decode (uint8_t l2_data, const sbit_t bursts, int n_errors, int n_bits_total)
	Decoding of xCCH data from bursts to L2 frame. More...

int	gsm0503_xcch_encode (ubit_t bursts, const uint8_t l2_data)
	Encoding of xCCH data from L2 frame to bursts. More...

static int	egprs_type3_unmap (const sbit_t bursts, sbit_t hc, sbit_t *dc)

static int	egprs_type2_unmap (const sbit_t bursts, sbit_t hc, sbit_t *dc)

static int	egprs_type1_unmap (const sbit_t bursts, sbit_t hc, sbit_t c1, sbit_t c2, int msc)

static int	_egprs_decode_hdr (const sbit_t hc, int mcs, union gprs_rlc_ul_hdr_egprs hdr)

static int	egprs_decode_hdr (union gprs_rlc_ul_hdr_egprs hdr, const sbit_t bursts, uint16_t nbits)

static int	egprs_parse_ul_cps (struct egprs_cps cps, union gprs_rlc_ul_hdr_egprs hdr, int type)

static int	egprs_decode_data (uint8_t l2_data, const sbit_t c, int mcs, int p, int blk, int n_errors, int n_bits_total)

int	gsm0503_pdtch_egprs_decode (uint8_t l2_data, const sbit_t bursts, uint16_t nbits, uint8_t usf_p, int n_errors, int *n_bits_total)
	Decode EGPRS UL message. More...

int	gsm0503_pdtch_decode (uint8_t l2_data, const sbit_t bursts, uint8_t usf_p, int n_errors, int *n_bits_total)
	Decode GPRS PDTCH. More...

static int	egprs_type3_map (ubit_t bursts, const ubit_t hc, const ubit_t *dc, int usf)

static int	egprs_type2_map (ubit_t bursts, const ubit_t hc, const ubit_t *dc, int usf)

static int	egprs_type1_map (ubit_t bursts, const ubit_t hc, const ubit_t c1, const ubit_t c2, int usf, int mcs)

static int	egprs_encode_hdr (ubit_t hc, const uint8_t l2_data, int mcs)

static int	egprs_encode_data (ubit_t c, const uint8_t l2_data, int mcs, int p, int blk)

static int	egprs_parse_dl_cps (struct egprs_cps cps, const union gprs_rlc_dl_hdr_egprs hdr, int type)

int	gsm0503_pdtch_egprs_encode (ubit_t bursts, const uint8_t l2_data, uint8_t l2_len)
	EGPRS DL message encoding. More...

int	gsm0503_pdtch_encode (ubit_t bursts, const uint8_t l2_data, uint8_t l2_len)
	GPRS DL message encoding. More...

static void	tch_fr_reassemble (uint8_t tch_data, const ubit_t b_bits, int net_order)
	assemble a FR codec frame in format as used inside RTP More...

static void	tch_fr_disassemble (ubit_t b_bits, const uint8_t tch_data, int net_order)

static void	tch_hr_reassemble (uint8_t tch_data, const ubit_t b_bits)

static void	tch_hr_disassemble (ubit_t b_bits, const uint8_t tch_data)

static void	tch_efr_reassemble (uint8_t tch_data, const ubit_t b_bits)

static void	tch_efr_disassemble (ubit_t b_bits, const uint8_t tch_data)

static void	tch_amr_reassemble (uint8_t tch_data, const ubit_t d_bits, int len)

static void	tch_amr_disassemble (ubit_t d_bits, const uint8_t tch_data, int len)

static void	tch_amr_sid_update_append (ubit_t *sid_update, uint8_t sti, uint8_t mi)

static void	extract_afs_sid_update (sbit_t sid_update, const sbit_t sbits)

static void	tch_fr_d_to_b (ubit_t b_bits, const ubit_t d_bits)

static void	tch_fr_b_to_d (ubit_t d_bits, const ubit_t b_bits)

static void	tch_hr_d_to_b (ubit_t b_bits, const ubit_t d_bits)

static void	tch_hr_b_to_d (ubit_t d_bits, const ubit_t b_bits)

static void	tch_efr_d_to_w (ubit_t b_bits, const ubit_t d_bits)

static void	tch_efr_w_to_d (ubit_t d_bits, const ubit_t b_bits)

static void	tch_efr_protected (const ubit_t s_bits, ubit_t b_bits)

static void	tch_fr_unreorder (ubit_t d, ubit_t p, const ubit_t *u)

static void	tch_fr_reorder (ubit_t u, const ubit_t d, const ubit_t *p)

static void	tch_hr_unreorder (ubit_t d, ubit_t p, const ubit_t *u)

static void	tch_hr_reorder (ubit_t u, const ubit_t d, const ubit_t *p)

static void	tch_efr_reorder (ubit_t w, const ubit_t s, const ubit_t *p)

static void	tch_efr_unreorder (ubit_t s, ubit_t p, const ubit_t *w)

static void	tch_amr_merge (ubit_t u, const ubit_t d, const ubit_t *p, int len, int prot)

static void	tch_amr_unmerge (ubit_t d, ubit_t p, const ubit_t *u, int len, int prot)

int	gsm0503_tch_fr_decode (uint8_t tch_data, const sbit_t bursts, int net_order, int efr, int n_errors, int n_bits_total)
	Perform channel decoding of a FR/EFR channel according TS 05.03. More...

int	gsm0503_tch_fr_encode (ubit_t bursts, const uint8_t tch_data, int len, int net_order)
	Perform channel encoding on a TCH/FS channel according to TS 05.03. More...

int	gsm0503_tch_hr_decode2 (uint8_t tch_data, const sbit_t bursts, int odd, int n_errors, int n_bits_total)
	Perform channel decoding of a HR(v1) channel according TS 05.03. More...

int	gsm0503_tch_hr_decode (uint8_t tch_data, const sbit_t bursts, int odd, int n_errors, int n_bits_total)
	Perform channel decoding of a HR(v1) channel according TS 05.03, deprecated legacy API. More...

int	gsm0503_tch_hr_encode (ubit_t bursts, const uint8_t tch_data, int len)
	Perform channel encoding on a TCH/HS channel according to TS 05.03. More...

static uint8_t	gsm0503_tch_afs_decode_inband (const sbit_t *cB)

int	gsm0503_tch_afs_decode (uint8_t tch_data, const sbit_t bursts, int codec_mode_req, uint8_t codec, int codecs, uint8_t ft, uint8_t cmr, int n_errors, int *n_bits_total)
	Perform channel decoding of a TCH/AFS channel according TS 05.03. More...

int	gsm0503_tch_afs_decode_dtx (uint8_t tch_data, const sbit_t bursts, int codec_mode_req, uint8_t codec, int codecs, uint8_t ft, uint8_t cmr, int n_errors, int n_bits_total, uint8_t dtx)
	Perform channel decoding of a TCH/AFS channel according TS 05.03. More...

int	gsm0503_tch_afs_encode (ubit_t bursts, const uint8_t tch_data, int len, int codec_mode_req, const uint8_t *codec, int codecs, uint8_t ft, uint8_t cmr)
	Perform channel encoding on a TCH/AFS channel according to TS 05.03. More...

static uint8_t	gsm0503_tch_ahs_decode_inband (const sbit_t *cB)

int	gsm0503_tch_ahs_decode (uint8_t tch_data, const sbit_t bursts, int odd, int codec_mode_req, uint8_t codec, int codecs, uint8_t ft, uint8_t cmr, int n_errors, int *n_bits_total)
	Perform channel decoding of a TCH/AHS channel according TS 05.03. More...

int	gsm0503_tch_ahs_decode_dtx (uint8_t tch_data, const sbit_t bursts, int odd, int codec_mode_req, uint8_t codec, int codecs, uint8_t ft, uint8_t cmr, int n_errors, int n_bits_total, uint8_t dtx)
	Perform channel decoding of a TCH/AHS channel according TS 05.03. More...

int	gsm0503_tch_ahs_encode (ubit_t bursts, const uint8_t tch_data, int len, int codec_mode_req, const uint8_t *codec, int codecs, uint8_t ft, uint8_t cmr)
	Perform channel encoding on a TCH/AHS channel according to TS 05.03. More...

static void	rach_apply_bsic (ubit_t *d, uint8_t bsic, uint8_t start)

static int16_t	rach_decode_ber (const sbit_t burst, uint8_t bsic, bool is_11bit, int n_errors, int *n_bits_total)

int	gsm0503_rach_ext_decode (uint16_t ra, const sbit_t burst, uint8_t bsic)
	Decode the Extended (11-bit) RACH according to 3GPP TS 45.003. More...

int	gsm0503_rach_decode (uint8_t ra, const sbit_t burst, uint8_t bsic)
	Decode the (8-bit) RACH according to TS 05.03. More...

int	gsm0503_rach_ext_decode_ber (uint16_t ra, const sbit_t burst, uint8_t bsic, int n_errors, int n_bits_total)
	Decode the Extended (11-bit) RACH according to 3GPP TS 45.003. More...

int	gsm0503_rach_decode_ber (uint8_t ra, const sbit_t burst, uint8_t bsic, int n_errors, int n_bits_total)
	Decode the (8-bit) RACH according to TS 05.03. More...

int	gsm0503_rach_encode (ubit_t burst, const uint8_t ra, uint8_t bsic)
	Encode the (8-bit) RACH according to TS 05.03. More...

int	gsm0503_rach_ext_encode (ubit_t *burst, uint16_t ra11, uint8_t bsic, bool is_11bit)
	Encode the Extended (11-bit) or regular (8-bit) RACH according to 3GPP TS 45.003. More...

int	gsm0503_sch_decode (uint8_t sb_info, const sbit_t burst)
	Decode the SCH according to TS 05.03. More...

int	gsm0503_sch_encode (ubit_t burst, const uint8_t sb_info)
	Encode the SCH according to TS 05.03. More...

static void	_tch_csd_burst_map (ubit_t burst, const ubit_t iB)

int	gsm0503_tch_fr96_encode (ubit_t bursts, const ubit_t data)
	Perform channel encoding of a TCH/F9.6 channel as per section 3.3. More...

int	gsm0503_tch_fr96_decode (ubit_t data, const sbit_t bursts, int n_errors, int n_bits_total)
	Perform channel decoding of a TCH/F9.6 channel as per section 3.3. More...

int	gsm0503_tch_fr48_encode (ubit_t bursts, const ubit_t data)
	Perform channel encoding of a TCH/F4.8 channel as per section 3.4. More...

int	gsm0503_tch_fr48_decode (ubit_t data, const sbit_t bursts, int n_errors, int n_bits_total)
	Perform channel decoding of a TCH/F4.8 channel as per section 3.4. More...

int	gsm0503_tch_hr48_encode (ubit_t bursts, const ubit_t data)
	Perform channel encoding of a TCH/H4.8 channel as per section 3.5. More...

int	gsm0503_tch_hr48_decode (ubit_t data, const sbit_t bursts, int n_errors, int n_bits_total)
	Perform channel decoding of a TCH/H4.8 channel as per section 3.5. More...

int	gsm0503_tch_fr24_encode (ubit_t bursts, const ubit_t data)
	Perform channel encoding of a TCH/F2.4 channel as per section 3.6. More...

int	gsm0503_tch_fr24_decode (ubit_t data, const sbit_t bursts, int n_errors, int n_bits_total)
	Perform channel decoding of a TCH/F2.4 channel as per section 3.6. More...

int	gsm0503_tch_hr24_encode (ubit_t bursts, const ubit_t data)
	Perform channel encoding of a TCH/H2.4 channel as per section 3.7. More...

int	gsm0503_tch_hr24_decode (ubit_t data, const sbit_t bursts, int n_errors, int n_bits_total)
	Perform channel decoding of a TCH/H2.4 channel as per section 3.7. More...

int	gsm0503_tch_fr144_encode (ubit_t bursts, const ubit_t data)
	Perform channel encoding of a TCH/F14.4 channel as per section 3.8. More...

int	gsm0503_tch_fr144_decode (ubit_t data, const sbit_t bursts, int n_errors, int n_bits_total)
	Perform channel decoding of a TCH/14.4 channel as per section 3.8. More...

int	gsm0503_tch_fr_facch_encode (ubit_t bursts, const uint8_t data)
	Perform channel encoding of a FACCH/F data as per section 4.2. More...

int	gsm0503_tch_fr_facch_decode (uint8_t data, const sbit_t bursts, int n_errors, int n_bits_total)
	Perform channel decoding of a FACCH/F data as per section 4.2. More...

int	gsm0503_tch_hr_facch_encode (ubit_t bursts, const uint8_t data)
	Perform channel encoding of a FACCH/H data as per section 4.3. More...

int	gsm0503_tch_hr_facch_decode (uint8_t data, const sbit_t bursts, int n_errors, int n_bits_total)
	Perform channel decoding of a FACCH/H data as per section 4.3. More...

Variables
const struct gsm0503_mcs_code	gsm0503_mcs_ul_codes [EGPRS_NUM_MCS]

const struct gsm0503_mcs_code	gsm0503_mcs_dl_codes [EGPRS_NUM_MCS]

Data Structures

Macros

Functions

Variables