sftest.c

来自「radius协议源码÷The Radius Stack will connect」· C语言 代码 · 共 63 行

/*
** Copyright (C) 1999-2000 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.
*/



#include	<stdio.h>
#include	<unistd.h>

#include	<sndfile.h>

#define	BUFFER_SIZE		(1024)


static short buffer [BUFFER_SIZE] ;

int		main (int argc, char *argv[])
{	SNDFILE	*file ;
	SF_INFO sfinfo ;
	int		k, count, max = 0, total = 0 ;
	
	if (argc < 2)
	{	printf ("Expecting input file name.\n") ;
		return 0 ;
		} ;	
	
	if (! (file = sf_open_read (argv [1], &sfinfo)))
	{	printf ("sf_open_read failed with error : ") ;
		sf_perror (NULL) ;
		exit (1) ;
		} ;

	while ((count = sf_read_short (file, buffer, BUFFER_SIZE)))
	{	for (k = 0 ; k < count ; k++)
			if (abs (buffer [k]) > max)
				max = abs (buffer [k]) ;
		total += count ;
		} ;
				
	printf ("Total         : %d\n", total) ;
	printf ("Maximun value : %d\n", max) ;
	
	sf_close (file) ;

	return 0 ;
} /* main */