util.h

该程序用于采样频率的转化

/*
** Copyright (C) 2002-2004 Erik de Castro Lopo <[e-mail]>
**
** 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.
*/

#define	ABS(a)			(((a) < 0) ? - (a) : (a))
#define MIN(a,b)		(((a) < (b)) ? (a) : (b))
#define	MAX(a,b)		(((a) >= (b)) ? (a) : (b))

#define	ARRAY_LEN(x)	((int) (sizeof (x) / sizeof ((x) [0])))

void gen_windowed_sines (float *data, int data_len, double *freqs, int freq_count) ;

void save_oct_float (char *filename, float *input, int in_len, float *output, int out_len) ;
void save_oct_double (char *filename, double *input, int in_len, double *output, int out_len) ;

void force_efence_banner (void) ;

void interleave_data (const float *in, float *out, int frames, int channels) ;

void deinterleave_data (const float *in, float *out, int frames, int channels) ;
/*
** Do not edit or modify anything in this comment block.
** The arch-tag line is a file identity tag for the GNU Arch 
** revision control system.
**
** arch-tag: 94b7a7fd-c69d-4bfc-b7cc-2fe09a869aa5
*/