forked from Mirrors/freeswitch
d92ee88a8b
git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@966 d0543943-73ff-0310-b7d9-9358b9ac24b2
73 lines
1.6 KiB
C
73 lines
1.6 KiB
C
/*
|
|
* gsm.h
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
|
|
#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 */
|