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      1 /*
      2  * Copyright 1992 by Jutta Degener and Carsten Bormann, Technische
      3  * Universitaet Berlin.  See the accompanying file "COPYRIGHT" for
      4  * details.  THERE IS ABSOLUTELY NO WARRANTY FOR THIS SOFTWARE.
      5  */
      6 
      7 /*$Header: /home/kbs/jutta/src/gsm/gsm-1.0/inc/RCS/gsm.h,v 1.11 1996/07/05 18:02:56 jutta Exp $*/
      8 
      9 #ifndef	GSM_H
     10 #define	GSM_H
     11 
     12 #ifdef __cplusplus
     13 #	define	NeedFunctionPrototypes	1
     14 #endif
     15 
     16 #if __STDC__
     17 #	define	NeedFunctionPrototypes	1
     18 #endif
     19 
     20 #ifdef _NO_PROTO
     21 #	undef	NeedFunctionPrototypes
     22 #endif
     23 
     24 #ifdef NeedFunctionPrototypes
     25 #   include	<stdio.h>		/* for FILE * 	*/
     26 #endif
     27 
     28 #undef GSM_P
     29 #if NeedFunctionPrototypes
     30 #	define	GSM_P( protos )	protos
     31 #else
     32 #	define  GSM_P( protos )	( /* protos */ )
     33 #endif
     34 
     35 /*
     36  *	Interface
     37  */
     38 
     39 typedef struct gsm_state * 	gsm;
     40 typedef short		   	gsm_signal;		/* signed 16 bit */
     41 typedef unsigned char		gsm_byte;
     42 typedef gsm_byte 		gsm_frame[33];		/* 33 * 8 bits	 */
     43 
     44 #define	GSM_MAGIC		0xD		  	/* 13 kbit/s RPE-LTP */
     45 
     46 #define	GSM_PATCHLEVEL		10
     47 #define	GSM_MINOR		0
     48 #define	GSM_MAJOR		1
     49 
     50 #define	GSM_OPT_VERBOSE		1
     51 #define	GSM_OPT_FAST		2
     52 #define	GSM_OPT_LTP_CUT		3
     53 #define	GSM_OPT_WAV49		4
     54 #define	GSM_OPT_FRAME_INDEX	5
     55 #define	GSM_OPT_FRAME_CHAIN	6
     56 
     57 extern gsm  gsm_create 	GSM_P((void));
     58 extern void gsm_destroy GSM_P((gsm));
     59 
     60 extern int  gsm_print   GSM_P((FILE *, gsm, gsm_byte  *));
     61 extern int  gsm_option  GSM_P((gsm, int, int *));
     62 
     63 extern void gsm_encode  GSM_P((gsm, gsm_signal *, gsm_byte  *));
     64 extern int  gsm_decode  GSM_P((gsm, gsm_byte   *, gsm_signal *));
     65 
     66 extern int  gsm_explode GSM_P((gsm, gsm_byte   *, gsm_signal *));
     67 extern void gsm_implode GSM_P((gsm, gsm_signal *, gsm_byte   *));
     68 
     69 #undef	GSM_P
     70 
     71 #endif	/* GSM_H */
     72