gsm44021.c File Reference

#include <errno.h>
#include <osmocom/core/bits.h>
#include <osmocom/isdn/v110.h>

Functions
int	osmo_csd_12k_6k_decode_frame (struct osmo_v110_decoded_frame *fr, const ubit_t *ra_bits, size_t n_bits)
	Decode a 60-bit GSM 12kbit/s CSD frame present as 60 ubits into a struct osmo_v110_decoded_frame. More...
int	osmo_csd_12k_6k_encode_frame (ubit_t *ra_bits, size_t ra_bits_size, const struct osmo_v110_decoded_frame *fr)
int	osmo_csd_3k6_decode_frame (struct osmo_v110_decoded_frame *fr, const ubit_t *ra_bits, size_t n_bits)
	Decode a 36-bit GSM 3k6kbit/s CSD frame present as 36 ubits into a struct osmo_v110_decoded_frame. More...
int	osmo_csd_3k6_encode_frame (ubit_t *ra_bits, size_t ra_bits_size, const struct osmo_v110_decoded_frame *fr)
void	osmo_csd_ubit_dump (FILE *outf, const ubit_t *fr, size_t in_len)
	Print a encoded "CSD modififed V.110" frame in the same table-like structure as the spec. More...

Function Documentation

osmo_csd_12k_6k_decode_frame()

int osmo_csd_12k_6k_decode_frame	(	struct osmo_v110_decoded_frame *	fr,
		const ubit_t *	ra_bits,
		size_t	n_bits
	)

Decode a 60-bit GSM 12kbit/s CSD frame present as 60 ubits into a struct osmo_v110_decoded_frame.

Parameters

[out]	caller-allocated	output data structure, filled by this function
[in]	ra_bits	One V.110 frame as 60 unpacked bits.

References osmo_v110_decoded_frame::d_bits, osmo_v110_decoded_frame::e_bits, osmo_v110_decoded_frame::s_bits, and osmo_v110_decoded_frame::x_bits.

osmo_csd_12k_6k_encode_frame()

int osmo_csd_12k_6k_encode_frame	(	ubit_t *	ra_bits,
		size_t	ra_bits_size,
		const struct osmo_v110_decoded_frame *	fr
	)

References osmo_v110_decoded_frame::d_bits, osmo_v110_decoded_frame::e_bits, osmo_v110_decoded_frame::s_bits, and osmo_v110_decoded_frame::x_bits.

osmo_csd_3k6_decode_frame()

int osmo_csd_3k6_decode_frame	(	struct osmo_v110_decoded_frame *	fr,
		const ubit_t *	ra_bits,
		size_t	n_bits
	)

Decode a 36-bit GSM 3k6kbit/s CSD frame present as 36 ubits into a struct osmo_v110_decoded_frame.

Parameters

[out]	caller-allocated	output data structure, filled by this function
[in]	ra_bits	One V.110 frame as 36 unpacked bits.

References osmo_v110_decoded_frame::d_bits, osmo_v110_decoded_frame::e_bits, OSMO_ASSERT, osmo_v110_decoded_frame::s_bits, and osmo_v110_decoded_frame::x_bits.

osmo_csd_3k6_encode_frame()

int osmo_csd_3k6_encode_frame	(	ubit_t *	ra_bits,
		size_t	ra_bits_size,
		const struct osmo_v110_decoded_frame *	fr
	)

References osmo_v110_decoded_frame::d_bits, osmo_v110_decoded_frame::e_bits, OSMO_ASSERT, osmo_v110_decoded_frame::s_bits, and osmo_v110_decoded_frame::x_bits.

osmo_csd_ubit_dump()

void osmo_csd_ubit_dump	(	FILE *	outf,
		const ubit_t *	fr,
		size_t	in_len
	)

Print a encoded "CSD modififed V.110" frame in the same table-like structure as the spec.

Parameters

	outf	output FILE stream to which to dump
[in]	fr	unpacked bits to dump
[in]	in_len	length of unpacked bits available at fr.