codec.h File Reference

#include <stdint.h>
#include <stdbool.h>
#include <osmocom/core/utils.h>

Go to the source code of this file.

Macros
#define	GSM_FR_BYTES   33
#define	GSM_HR_BYTES   14
#define	GSM_EFR_BYTES   31

Enumerations
enum	osmo_amr_type {   AMR_4_75 = 0, AMR_5_15 = 1, AMR_5_90 = 2, AMR_6_70 = 3,   AMR_7_40 = 4, AMR_7_95 = 5, AMR_10_2 = 6, AMR_12_2 = 7,   AMR_SID = 8, AMR_GSM_EFR_SID = 9, AMR_TDMA_EFR_SID = 10, AMR_PDC_EFR_SID = 11,   AMR_NO_DATA = 15 }
enum	osmo_amr_quality { AMR_BAD = 0, AMR_GOOD = 1 }

Functions
static bool	osmo_amr_is_speech (enum osmo_amr_type ft)
bool	osmo_fr_check_sid (const uint8_t *rtp_payload, size_t payload_len)
bool	osmo_hr_check_sid (const uint8_t *rtp_payload, size_t payload_len)
int	osmo_amr_rtp_enc (uint8_t *payload, uint8_t cmr, enum osmo_amr_type ft, enum osmo_amr_quality bfi)
int	osmo_amr_rtp_dec (const uint8_t *payload, int payload_len, uint8_t *cmr, int8_t *cmi, enum osmo_amr_type *ft, enum osmo_amr_quality *bfi, int8_t *sti)

Variables
const uint16_t	gsm610_bitorder []
const uint16_t	gsm620_unvoiced_bitorder []
const uint16_t	gsm620_voiced_bitorder []
const uint16_t	gsm660_bitorder []
const uint16_t	gsm690_12_2_bitorder []
const uint16_t	gsm690_10_2_bitorder []
const uint16_t	gsm690_7_95_bitorder []
const uint16_t	gsm690_7_4_bitorder []
const uint16_t	gsm690_6_7_bitorder []
const uint16_t	gsm690_5_9_bitorder []
const uint16_t	gsm690_5_15_bitorder []
const uint16_t	gsm690_4_75_bitorder []
const struct value_string	osmo_amr_type_names []

Macro Definition Documentation

GSM_EFR_BYTES

#define GSM_EFR_BYTES   31

GSM_FR_BYTES

#define GSM_FR_BYTES   33

GSM_HR_BYTES

#define GSM_HR_BYTES   14

Enumeration Type Documentation

osmo_amr_quality

enum osmo_amr_quality

Enumerator
AMR_BAD
AMR_GOOD

osmo_amr_type

enum osmo_amr_type

Enumerator
AMR_4_75
AMR_5_15
AMR_5_90
AMR_6_70
AMR_7_40
AMR_7_95
AMR_10_2
AMR_12_2
AMR_SID
AMR_GSM_EFR_SID
AMR_TDMA_EFR_SID
AMR_PDC_EFR_SID
AMR_NO_DATA

Function Documentation

osmo_amr_is_speech()

static bool osmo_amr_is_speech ( enum osmo_amr_type  ft )

inlinestatic

Check if given AMR Frame Type is a speech frame

Parameters

[in]

ft

AMR Frame Type

Returns

true if AMR with given Frame Type contains voice, false otherwise

References AMR_10_2, AMR_12_2, AMR_4_75, AMR_5_15, AMR_5_90, AMR_6_70, AMR_7_40, and AMR_7_95.

osmo_amr_rtp_dec()

int osmo_amr_rtp_dec	(	const uint8_t *	payload,
		int	payload_len,
		uint8_t *	cmr,
		int8_t *	cmi,
		enum osmo_amr_type *	ft,
		enum osmo_amr_quality *	bfi,
		int8_t *	sti
	)

osmo_amr_rtp_enc()

int osmo_amr_rtp_enc	(	uint8_t *	payload,
		uint8_t	cmr,
		enum osmo_amr_type	ft,
		enum osmo_amr_quality	bfi
	)

osmo_fr_check_sid()

bool osmo_fr_check_sid	(	const uint8_t *	rtp_payload,
		size_t	payload_len
	)

osmo_hr_check_sid()

bool osmo_hr_check_sid	(	const uint8_t *	rtp_payload,
		size_t	payload_len
	)

Variable Documentation

gsm610_bitorder

const uint16_t gsm610_bitorder[]

extern

gsm620_unvoiced_bitorder

const uint16_t gsm620_unvoiced_bitorder[]

extern

gsm620_voiced_bitorder

const uint16_t gsm620_voiced_bitorder[]

extern

gsm660_bitorder

const uint16_t gsm660_bitorder[]

extern

gsm690_10_2_bitorder

const uint16_t gsm690_10_2_bitorder[]

extern

gsm690_12_2_bitorder

const uint16_t gsm690_12_2_bitorder[]

extern

gsm690_4_75_bitorder

const uint16_t gsm690_4_75_bitorder[]

extern

gsm690_5_15_bitorder

const uint16_t gsm690_5_15_bitorder[]

extern

gsm690_5_9_bitorder

const uint16_t gsm690_5_9_bitorder[]

extern

gsm690_6_7_bitorder

const uint16_t gsm690_6_7_bitorder[]

extern

gsm690_7_4_bitorder

const uint16_t gsm690_7_4_bitorder[]

extern

gsm690_7_95_bitorder

const uint16_t gsm690_7_95_bitorder[]

extern

osmo_amr_type_names

const struct value_string osmo_amr_type_names[]

extern