00001 /* 00002 * SpanDSP - a series of DSP components for telephony 00003 * 00004 * private/gsm0610.h - GSM 06.10 full rate speech codec. 00005 * 00006 * Written by Steve Underwood <steveu@coppice.org> 00007 * 00008 * Copyright (C) 2006 Steve Underwood 00009 * 00010 * All rights reserved. 00011 * 00012 * This program is free software; you can redistribute it and/or modify 00013 * it under the terms of the GNU Lesser General Public License version 2.1, 00014 * as published by the Free Software Foundation. 00015 * 00016 * This program is distributed in the hope that it will be useful, 00017 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00018 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00019 * GNU Lesser General Public License for more details. 00020 * 00021 * You should have received a copy of the GNU Lesser General Public 00022 * License along with this program; if not, write to the Free Software 00023 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 00024 * 00025 * $Id: gsm0610.h,v 1.2 2008/11/15 14:27:29 steveu Exp $ 00026 */ 00027 00028 #if !defined(_SPANDSP_PRIVATE_GSM0610_H_) 00029 #define _SPANDSP_PRIVATE_GSM0610_H_ 00030 00031 /*! 00032 GSM 06.10 FR codec state descriptor. This defines the state of 00033 a single working instance of the GSM 06.10 FR encoder or decoder. 00034 */ 00035 struct gsm0610_state_s 00036 { 00037 /*! \brief One of the packing modes */ 00038 int packing; 00039 00040 int16_t dp0[280]; 00041 00042 /*! Preprocessing */ 00043 int16_t z1; 00044 int32_t L_z2; 00045 /*! Pre-emphasis */ 00046 int16_t mp; 00047 00048 /*! Short term delay filter */ 00049 int16_t u[8]; 00050 int16_t LARpp[2][8]; 00051 int16_t j; 00052 00053 /*! Long term synthesis */ 00054 int16_t nrp; 00055 /*! Short term synthesis */ 00056 int16_t v[9]; 00057 /*! Decoder postprocessing */ 00058 int16_t msr; 00059 00060 /*! Encoder data */ 00061 int16_t e[50]; 00062 }; 00063 00064 #endif 00065 /*- End of include ---------------------------------------------------------*/