gsm.h

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/*
 * 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/cvs/giga/ladspa-swh/gsm/gsm.h,v 1.1 2001/06/10 21:36:51 swh 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 */