packet-amr.h

/* packet-amr.h
 *
 * Adaptive Multi-Rate (AMR) speech codec 3GPP TS 26.101
 *
 * (C) 2024 by sysmocom s.f.m.c. GmbH <[email protected]>
 *
 * SPDX-License-Identifier: GPL-2.0-or-later
 */
 
#ifndef __PACKET_AMR_H__
#define __PACKET_AMR_H__
 
#include "config.h"
 
#include <stddef.h>
#include <stdint.h>
 
#include "ws_symbol_export.h"
 
/* According to TS 26.101 Table A.1b: */
#define AMR_FT_0        0   /* 4.75 */
#define AMR_FT_1        1   /* 5.15 */
#define AMR_FT_2        2   /* 5.90 */
#define AMR_FT_3        3   /* 6.70 */
#define AMR_FT_4        4   /* 7.40 */
#define AMR_FT_5        5   /* 7.95 */
#define AMR_FT_6        6   /* 10.2 */
#define AMR_FT_7        7   /* 12.2 */
#define AMR_FT_SID      8   /* AMR SID */
#define AMR_FT_GSM_EFR_SID  9   /* GSM-EFR SID */
#define AMR_FT_TDMA_EFR_SID 10  /* TDMA-EFR SID */
#define AMR_FT_PDC_EFR_SID  11  /* PDC-EFR SID */
/* version 16.0.0 Release 16: 12-14 for future use */
#define AMR_FT_NO_DATA      15  /* NO_DATA */
 
/* 1B Payload Header + 1B ToC: */
#define AMR_NB_OA_HDR_LEN 2
 
WS_DLL_PUBLIC
int amr_nb_bytes_to_ft(uint8_t bytes);
 
#endif /*__PACKET_AMR_H__*/