/*

 * Copyright 1992 by Jutta Degener and Carsten Bormann, Technische

 * Universitaet Berlin.  See the accompanying file "COPYRIGHT" for

 * details.  THERE IS ABSOLUTELY NO WARRANTY FOR THIS SOFTWARE.

 */

/*$Header: /home/kbs/jutta/src/gsm/gsm-1.0/inc/RCS/gsm.h,v 1.11 1996/07/05 18:02:56 jutta Exp $*/

#ifndef	GSM_H

#define	GSM_H

#ifdef __cplusplus

#	define	NeedFunctionPrototypes	1

#endif

#if __STDC__

#	define	NeedFunctionPrototypes	1

#endif

#ifdef _NO_PROTO

#	undef	NeedFunctionPrototypes

#endif

#ifdef NeedFunctionPrototypes

#   include	<stdio.h>		/* for FILE * 	*/

#endif

#undef GSM_P

#if NeedFunctionPrototypes

#	define	GSM_P( protos )	protos

#else

#	define  GSM_P( protos )	( /* protos */ )

#endif

/*

 *	Interface

 */

typedef struct gsm_state * 	gsm;

typedef short		   	gsm_signal;		/* signed 16 bit */

typedef unsigned char		gsm_byte;

typedef gsm_byte 		gsm_frame[33];		/* 33 * 8 bits	 */

#define	GSM_MAGIC		0xD		  	/* 13 kbit/s RPE-LTP */

#define	GSM_PATCHLEVEL		10

#define	GSM_MINOR		0

#define	GSM_MAJOR		1

#define	GSM_OPT_VERBOSE		1

#define	GSM_OPT_FAST		2

#define	GSM_OPT_LTP_CUT		3

#define	GSM_OPT_WAV49		4

#define	GSM_OPT_FRAME_INDEX	5

#define	GSM_OPT_FRAME_CHAIN	6

extern gsm  gsm_create 	GSM_P((void));

extern void gsm_destroy GSM_P((gsm));	

extern int  gsm_print   GSM_P((FILE *, gsm, gsm_byte  *));

extern int  gsm_option  GSM_P((gsm, int, int *));

extern void gsm_encode  GSM_P((gsm, gsm_signal *, gsm_byte  *));

extern int  gsm_decode  GSM_P((gsm, gsm_byte   *, gsm_signal *));

extern int  gsm_explode GSM_P((gsm, gsm_byte   *, gsm_signal *));

extern void gsm_implode GSM_P((gsm, gsm_signal *, gsm_byte   *));

#undef	GSM_P

#endif	/* GSM_H */