ref: eea06700407866bfb0ec73f01394b8c2fc37d59b
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) enum {DEFQUAL = 100, MAXQUAL = 2000, MINQUAL = 10}; 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 */