/*
** adpcm.h - include file for adpcm coder.
**
** Version 1.0, 7-Jul-92.
*/

struct adpcm_state {
    short valprev;  /* Previous output value */
    char  index;         /* Index into stepsize table */
};

#ifdef __STDC__
#define ARGS(x) x
#else
#define ARGS(x) ()
#endif

#if 0
void adpcm_coder ARGS((short [], char [], int, struct adpcm_state *));
void adpcm_decoder ARGS((char [], short [], int, struct adpcm_state *));
#endif