ref: 26a6f3c02bf39024cfcc55e7af889b1da966f152
dir: /libfaac/aacquant.h/
/*
* FAAC - Freeware Advanced Audio Coder
* Copyright (C) 2001 Menno Bakker
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* $Id: aacquant.h,v 1.9 2003/10/12 16:43:39 knik Exp $
*/
#ifndef AACQUANT_H
#define AACQUANT_H
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
#include "coder.h"
#define IXMAX_VAL 8191
#define PRECALC_SIZE (IXMAX_VAL+2)
#define LARGE_BITS 100000
#define SF_OFFSET 100
#define POW20(x) pow(2.0,((double)x)*.25)
#define IPOW20(x) pow(2.0,-((double)x)*.1875)
#pragma pack(push, 1)
typedef struct
{
double *pow43;
double quality;
} AACQuantCfg;
#pragma pack(pop)
void AACQuantizeInit(CoderInfo *coderInfo, unsigned int numChannels,
AACQuantCfg *aacquantCfg);
void AACQuantizeEnd(CoderInfo *coderInfo, unsigned int numChannels,
AACQuantCfg *aacquantCfg);
int AACQuantize(CoderInfo *coderInfo,
int *cb_width,
int num_cb,
double *xr,
AACQuantCfg *aacquantcfg);
int SortForGrouping(CoderInfo* coderInfo,
int *sfb_width_table,
double *xr);
void CalcAvgEnrg(CoderInfo *coderInfo,
const double *xr);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* AACQUANT_H */