gsm.h

Go to the documentation of this file.

/*
 * 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.
 */

/*$Header$*/

#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 */