g711.h

ITU-T G.711语音编解码程序

/*
  ============================================================================
   File: G711.H                                        
  ============================================================================

                            UGST/ITU-T G711 MODULE

                          GLOBAL FUNCTION PROTOTYPES

   History:
   10.Dec.91	v1.0	First version <[e-mail]>
   08.Feb.92	v1.1	Non-ANSI prototypes added <[e-mail]>
   11.Jan.96    v1.2    Fixed misleading prototype parameter names in
                        alaw_expand() and ulaw_compress(); changed to
			smart prototypes <[e-mail]>,
			and <[e-mail]>
   31.Jan.2000  v3.01   [version no.aligned with g711.c] Updated list of 
                        compilers for smart prototypes
  ============================================================================
*/
#ifndef G711_defined
#define G711_defined 301

/* Smart function prototypes: for [ag]cc, VaxC, and [tb]cc */
#if !defined(ARGS)
#if (defined(__STDC__) || defined(VMS) || defined(__DECC)  || defined(MSDOS) || defined(__MSDOS__)) || defined (__CYGWIN__) || defined (_MSC_VER)
#define ARGS(s) s
#else
#define ARGS(s) ()
#endif
#endif


/* Function prototypes */
void  alaw_compress ARGS((long lseg, short *linbuf, short *logbuf));
void  alaw_expand ARGS((long lseg, short *logbuf, short *linbuf));
void  ulaw_compress ARGS((long lseg, short *linbuf, short *logbuf));
void  ulaw_expand ARGS((long lseg, short *logbuf, short *linbuf));

/* Definitions for better user interface (?!) */
#define IS_LIN 1
#define IS_LOG 0

#endif
/* .......................... End of G711.H ........................... */