shithub: aacenc

ref: 725acfc45ff162d0bfb1896a9e7d8b9375348bf3
dir: /libfaac/backpred.h/

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/*
 * FAAC - Freeware Advanced Audio Coder
 * Copyright (C) 2001 Menno 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 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * $Id: backpred.h,v 1.2 2001/05/18 13:38:19 menno Exp $
 */

#ifndef _AAC_BACK_H_INCLUDED
#define _AAC_BACK_H_INCLUDED

#define PRED_ALPHA	0.90625
#define PRED_A		0.953125
#define PRED_B		0.953125

#define ALPHA PRED_ALPHA
#define A PRED_A
#define B PRED_B
#define MINVAR 1.e-10

/* Reset every RESET_FRAME frames. */
#define RESET_FRAME 8
 
void PredCalcPrediction(double *act_spec,
						double *last_spec,
						int btype,
						int nsfb,
						int *isfb_width,
						CoderInfo *coderInfo,
						ChannelInfo *channelInfo,
						int chanNum); 

void PredInit();

void CopyPredInfo(CoderInfo *right, CoderInfo *left);


#endif