gsm620.c File Reference

GSM 06.20 - GSM HR codec. More...

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

Functions
static uint16_t	mask (const uint8_t msb)
bool	osmo_hr_check_sid (const uint8_t *rtp_payload, size_t payload_len)
	Check whether RTP frame contains HR SID code word according to TS 101 318 §5.2.2. More...

Variables
const uint16_t	gsm620_unvoiced_bitorder [112]
const uint16_t	gsm620_voiced_bitorder [112]

Detailed Description

GSM 06.20 - GSM HR codec.

Function Documentation

mask()

static uint16_t mask ( const uint8_t  msb )

inlinestatic

Referenced by osmo_hr_check_sid().

osmo_hr_check_sid()

bool osmo_hr_check_sid	(	const uint8_t *	rtp_payload,
		size_t	payload_len
	)

Check whether RTP frame contains HR SID code word according to TS 101 318 §5.2.2.

Parameters

[in]	rtp_payload	Buffer with RTP payload
[in]	payload_len	Length of payload

Returns

true if code word is found, false otherwise

References ARRAY_SIZE, bitvec_get_uint(), bitvec::cur_bit, bitvec::data, bitvec::data_len, and mask().

Variable Documentation

gsm620_unvoiced_bitorder

const uint16_t gsm620_unvoiced_bitorder[112]

gsm620_voiced_bitorder

const uint16_t gsm620_voiced_bitorder[112]