From 03fd8d014f9871896a86534432c8757d65a576fe Mon Sep 17 00:00:00 2001 From: Jonathan Santos Date: Wed, 25 May 2011 13:54:02 -0400 Subject: Import upstream version 0.9.13 --- include/openbsc/trau_frame.h | 64 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 64 insertions(+) create mode 100644 include/openbsc/trau_frame.h (limited to 'include/openbsc/trau_frame.h') diff --git a/include/openbsc/trau_frame.h b/include/openbsc/trau_frame.h new file mode 100644 index 000000000..c594c38cb --- /dev/null +++ b/include/openbsc/trau_frame.h @@ -0,0 +1,64 @@ +#ifndef _TRAU_FRAME_H +#define _TRAU_FRAME_H +/* TRAU frame handling according to GSM TS 08.60 */ + +/* (C) 2009 by Harald Welte + * All Rights Reserved + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see . + * + */ + +#include + +/* 21 for FR/EFR, 25 for AMR, 15 for OM, 15 for data, 13 for E-data, 21 idle */ +#define MAX_C_BITS 25 +/* 260 for FR/EFR, 256 for AMR, 264 for OM, 288 for E-data */ +#define MAX_D_BITS 288 +/* for all speech frames */ +#define MAX_T_BITS 4 +/* for OM */ +#define MAX_S_BITS 6 +/* for E-data */ +#define MAX_M_BITS 2 + +struct decoded_trau_frame { + u_int8_t c_bits[MAX_C_BITS]; + u_int8_t d_bits[MAX_D_BITS]; + u_int8_t t_bits[MAX_T_BITS]; + u_int8_t s_bits[MAX_S_BITS]; + u_int8_t m_bits[MAX_M_BITS]; +}; + +#define TRAU_FT_FR_UP 0x02 /* 0 0 0 1 0 - 3.5.1.1.1 */ +#define TRAU_FT_FR_DOWN 0x1c /* 1 1 1 0 0 - 3.5.1.1.1 */ +#define TRAU_FT_EFR 0x1a /* 1 1 0 1 0 - 3.5.1.1.1 */ +#define TRAU_FT_AMR 0x06 /* 0 0 1 1 0 - 3.5.1.2 */ +#define TRAU_FT_OM_UP 0x07 /* 0 0 1 0 1 - 3.5.2 */ +#define TRAU_FT_OM_DOWN 0x1b /* 1 1 0 1 1 - 3.5.2 */ +#define TRAU_FT_DATA_UP 0x08 /* 0 1 0 0 0 - 3.5.3 */ +#define TRAU_FT_DATA_DOWN 0x16 /* 1 0 1 1 0 - 3.5.3 */ +#define TRAU_FT_D145_SYNC 0x14 /* 1 0 1 0 0 - 3.5.3 */ +#define TRAU_FT_EDATA 0x1f /* 1 1 1 1 1 - 3.5.4 */ +#define TRAU_FT_IDLE_UP 0x10 /* 1 0 0 0 0 - 3.5.5 */ +#define TRAU_FT_IDLE_DOWN 0x0e /* 0 1 1 1 0 - 3.5.5 */ + + +int decode_trau_frame(struct decoded_trau_frame *fr, const u_int8_t *trau_bits); +int encode_trau_frame(u_int8_t *trau_bits, const struct decoded_trau_frame *fr); +int trau_frame_up2down(struct decoded_trau_frame *fr); +u_int8_t *trau_idle_frame(void); + + +#endif /* _TRAU_FRAME_H */ -- cgit v1.2.3