ref: 066f3cc7bac1d1a85f5274e0ec90165b3cfcbec6
dir: /nok_ltp_common_internal.h/
/* * Internal definitions for LTP * * Copyright (c) 1999 M. Bakker * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; see the file COPYING. If not, write to * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ /************************************************************************** Version Control Information Method: CVS Identifiers: $Revision: 1.3 $ $Date: 2000/10/05 08:39:02 $ (check in) $Author: menno $ *************************************************************************/ #ifndef _NOK_LTP_COMMON_INTERNAL_H #define _NOK_LTP_COMMON_INTERNAL_H /* Purpose: Number of LTP coefficients. */ #define LPC 1 /* Purpose: Maximum LTP lag. */ #define DELAY 2048 /* Purpose: Length of the bitstream element ltp_data_present. */ #define LEN_LTP_DATA_PRESENT 1 /* Purpose: Length of the bitstream element ltp_lag. */ #define LEN_LTP_LAG 11 /* Purpose: Length of the bitstream element ltp_coef. */ #define LEN_LTP_COEF 3 /* Purpose: Length of the bitstream element ltp_short_used. */ #define LEN_LTP_SHORT_USED 1 /* Purpose: Length of the bitstream element ltp_short_lag_present. */ #define LEN_LTP_SHORT_LAG_PRESENT 1 /* Purpose: Length of the bitstream element ltp_short_lag. */ #define LEN_LTP_SHORT_LAG 5 /* Purpose: Offset of the lags written in the bitstream. */ #define NOK_LTP_LAG_OFFSET 16 /* Purpose: Length of the bitstream element ltp_long_used. */ #define LEN_LTP_LONG_USED 1 /* Purpose: Upper limit for the number of scalefactor bands which can use lt prediction with long windows. Explanation: Bands 0..NOK_MAX_LT_PRED_SFB-1 can use lt prediction. */ #define NOK_MAX_LT_PRED_LONG_SFB 40 /* Purpose: Upper limit for the number of scalefactor bands which can use lt prediction with short windows. Explanation: Bands 0..NOK_MAX_LT_PRED_SFB-1 can use lt prediction. */ #define NOK_MAX_LT_PRED_SHORT_SFB 13 /* Purpose: Buffer offset to maintain block alignment. Explanation: This is only used for a short window sequence. */ #define SHORT_SQ_OFFSET (BLOCK_LEN_LONG-(BLOCK_LEN_SHORT*4+BLOCK_LEN_SHORT/2)) /* Purpose: Number of codes for LTP weight. */ #define CODESIZE 8 /* Purpose: Float type for external data Explanation: - */ typedef double float_ext; #endif /* _NOK_LTP_COMMON_INTERNAL_H */