1 /*
2 ** adpcm.h - include file for adpcm coder.
3 **
4 ** Version 1.0, 7-Jul-92.
5 */
6 
7 struct adpcm_state {
8     short	valprev;	/* Previous output value */
9     char	index;		/* Index into stepsize table */
10 };
11 
12 #ifdef __STDC__
13 #define ARGS(x) x
14 #else
15 #define ARGS(x) ()
16 #endif
17 
18 void adpcm_coder ARGS((short [], char [], int, struct adpcm_state *));
19 void adpcm_decoder ARGS((char [], short [], int, struct adpcm_state *));
20