Harald Welte | 2a8ee52 | 2009-01-05 19:01:01 +0000 | [diff] [blame] | 1 | #ifndef _TRAU_FRAME_H |
| 2 | #define _TRAU_FRAME_H |
| 3 | /* TRAU frame handling according to GSM TS 08.60 */ |
| 4 | |
| 5 | /* (C) 2009 by Harald Welte <laforge@gnumonks.org> |
| 6 | * All Rights Reserved |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation; either version 2 of the License, or |
| 11 | * (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License along |
| 19 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 20 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| 21 | * |
| 22 | */ |
| 23 | |
| 24 | #include <sys/types.h> |
| 25 | |
| 26 | /* 21 for FR/EFR, 25 for AMR, 15 for OM, 15 for data, 13 for E-data, 21 idle */ |
| 27 | #define MAX_C_BITS 25 |
| 28 | /* 260 for FR/EFR, 256 for AMR, 264 for OM, 288 for E-data */ |
| 29 | #define MAX_D_BITS 288 |
| 30 | /* for all speech frames */ |
| 31 | #define MAX_T_BITS 4 |
| 32 | /* for OM */ |
| 33 | #define MAX_S_BITS 6 |
| 34 | /* for E-data */ |
| 35 | #define MAX_M_BITS 2 |
| 36 | |
| 37 | struct decoded_trau_frame { |
| 38 | u_int8_t c_bits[MAX_C_BITS]; |
| 39 | u_int8_t d_bits[MAX_D_BITS]; |
| 40 | u_int8_t t_bits[MAX_T_BITS]; |
| 41 | u_int8_t s_bits[MAX_S_BITS]; |
| 42 | u_int8_t m_bits[MAX_M_BITS]; |
| 43 | }; |
| 44 | |
| 45 | #define TRAU_FT_FR_UP 0x02 /* 0 0 0 1 0 - 3.5.1.1.1 */ |
| 46 | #define TRAU_FT_FR_DOWN 0x1c /* 1 1 1 0 0 - 3.5.1.1.1 */ |
| 47 | #define TRAU_FT_EFR 0x1a /* 1 1 0 1 0 - 3.5.1.1.1 */ |
| 48 | #define TRAU_FT_AMR 0x06 /* 0 0 1 1 0 - 3.5.1.2 */ |
| 49 | #define TRAU_FT_OM_UP 0x07 /* 0 0 1 0 1 - 3.5.2 */ |
| 50 | #define TRAU_FT_OM_DOWN 0x1b /* 1 1 0 1 1 - 3.5.2 */ |
| 51 | #define TRAU_FT_DATA_UP 0x08 /* 0 1 0 0 0 - 3.5.3 */ |
| 52 | #define TRAU_FT_DATA_DOWN 0x16 /* 1 0 1 1 0 - 3.5.3 */ |
| 53 | #define TRAU_FT_D145_SYNC 0x14 /* 1 0 1 0 0 - 3.5.3 */ |
| 54 | #define TRAU_FT_EDATA 0x1f /* 1 1 1 1 1 - 3.5.4 */ |
Harald Welte | 38e0437 | 2009-01-05 19:42:46 +0000 | [diff] [blame] | 55 | #define TRAU_FT_IDLE_UP 0x10 /* 1 0 0 0 0 - 3.5.5 */ |
| 56 | #define TRAU_FT_IDLE_DOWN 0x0e /* 0 1 1 1 0 - 3.5.5 */ |
Harald Welte | 2a8ee52 | 2009-01-05 19:01:01 +0000 | [diff] [blame] | 57 | |
| 58 | |
Harald Welte | 418f5a4 | 2009-01-05 20:12:47 +0000 | [diff] [blame] | 59 | int decode_trau_frame(struct decoded_trau_frame *fr, const u_int8_t *trau_bits); |
| 60 | int encode_trau_frame(u_int8_t *trau_bits, const struct decoded_trau_frame *fr); |
| 61 | int trau_frame_up2down(struct decoded_trau_frame *fr); |
Harald Welte | 1fa60c8 | 2009-02-09 18:13:26 +0000 | [diff] [blame] | 62 | u_int8_t *trau_idle_frame(void); |
Harald Welte | 418f5a4 | 2009-01-05 20:12:47 +0000 | [diff] [blame] | 63 | |
Harald Welte | 2a8ee52 | 2009-01-05 19:01:01 +0000 | [diff] [blame] | 64 | |
| 65 | #endif /* _TRAU_FRAME_H */ |