| Benny Prijono | 7ffd775 | 2008-03-17 14:07:53 +0000 | [diff] [blame] | 1 | /* $Id$ */ |
| 2 | /* |
| Benny Prijono | 844653c | 2008-12-23 17:27:53 +0000 | [diff] [blame^] | 3 | * Copyright (C) 2008-2009 Teluu Inc. (http://www.teluu.com) |
| 4 | * Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org> |
| Benny Prijono | 7ffd775 | 2008-03-17 14:07:53 +0000 | [diff] [blame] | 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 | */ |
| 20 | /* |
| 21 | * Based on implementation found in Carnegie Mellon Speech Group Software |
| 22 | * depository (ftp://ftp.cs.cmu.edu/project/fgdata/index.html). No copyright |
| 23 | * was claimed in the original source codes. |
| 24 | */ |
| 25 | #ifndef __PJMEDIA_CODEC_G722_DEC_H__ |
| 26 | #define __PJMEDIA_CODEC_G722_DEC_H__ |
| 27 | |
| 28 | #include <pjmedia-codec/types.h> |
| 29 | |
| 30 | /* Decoder state */ |
| 31 | typedef struct g722_dec_t { |
| 32 | /* PCM low band */ |
| 33 | int slow; |
| 34 | int detlow; |
| 35 | int spl; |
| 36 | int szl; |
| 37 | int rlt [3]; |
| 38 | int al [3]; |
| 39 | int apl [3]; |
| 40 | int plt [3]; |
| 41 | int dlt [7]; |
| 42 | int bl [7]; |
| 43 | int bpl [7]; |
| 44 | int sgl [7]; |
| 45 | int nbl; |
| 46 | |
| 47 | /* PCM high band*/ |
| 48 | int shigh; |
| 49 | int dethigh; |
| 50 | int sph; |
| 51 | int szh; |
| 52 | int rh [3]; |
| 53 | int ah [3]; |
| 54 | int aph [3]; |
| 55 | int ph [3]; |
| 56 | int dh [7]; |
| 57 | int bh [7]; |
| 58 | int bph [7]; |
| 59 | int sgh [7]; |
| 60 | int nbh; |
| 61 | |
| 62 | /* QMF signal history */ |
| 63 | int xd[12]; |
| 64 | int xs[12]; |
| 65 | } g722_dec_t; |
| 66 | |
| 67 | |
| 68 | PJ_DECL(pj_status_t) g722_dec_init(g722_dec_t *dec); |
| 69 | |
| 70 | PJ_DECL(pj_status_t) g722_dec_decode(g722_dec_t *dec, |
| 71 | void *in, |
| 72 | pj_size_t in_size, |
| 73 | pj_int16_t out[], |
| 74 | pj_size_t *nsamples); |
| 75 | |
| 76 | PJ_DECL(pj_status_t) g722_dec_deinit(g722_dec_t *dec); |
| 77 | |
| 78 | #endif /* __PJMEDIA_CODEC_G722_DEC_H__ */ |
| 79 | |