www.pudn.com > speakfs72.zip > RAWCAUDI.C, change:2002-01-05,size:514b


/* testc - Test adpcm coder */ 
 
#include "adpcm.h" 
#include <stdio.h> 
 
struct adpcm_state state; 
 
#define NSAMPLES 1000 
 
char	abuf[NSAMPLES/2]; 
short	sbuf[NSAMPLES]; 
 
main() { 
    int n; 
 
    while(1) { 
	n = read(0, sbuf, NSAMPLES*2); 
	if ( n < 0 ) { 
	    perror("input file"); 
	    exit(1); 
	} 
	if ( n == 0 ) break; 
	adpcm_coder(sbuf, abuf, n/2, &state); 
	write(1, abuf, n/4); 
    } 
    fprintf(stderr, "Final valprev=%d, index=%d\n", 
	    state.valprev, state.index); 
    exit(0); 
}