libgsm/gsm.h

   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: /cvsroot/sox/sox/libgsm/gsm.h,v 1.2 2008/03/21 13:34:21 robs Exp $*/
   8
   9 #ifndef GSM_H
  10 #define GSM_H
  11
  12 #include "aliases.h"
  13
  14 #ifdef __cplusplus
  15 #       define  NeedFunctionPrototypes  1
  16 #endif
  17
  18 #if __STDC__
  19 #       define  NeedFunctionPrototypes  1
  20 #endif
  21
  22 #ifdef _NO_PROTO
  23 #       undef   NeedFunctionPrototypes
  24 #endif
  25
  26 #ifdef NeedFunctionPrototypes
  27 #   include     <stdio.h>               /* for FILE *   */
  28 #endif
  29
  30 #undef GSM_P
  31 #if NeedFunctionPrototypes
  32 #       define  GSM_P( protos ) protos
  33 #else
  34 #       define  GSM_P( protos ) ( /* protos */ )
  35 #endif
  36
  37 /*
  38  *      Interface
  39  */
  40
  41 typedef struct gsm_state *      gsm;
  42 typedef short                   gsm_signal;             /* signed 16 bit */
  43 typedef unsigned char           gsm_byte;
  44 typedef gsm_byte                gsm_frame[33];          /* 33 * 8 bits   */
  45
  46 #define GSM_MAGIC               0xD                     /* 13 kbit/s RPE-LTP */
  47
  48 #define GSM_PATCHLEVEL          10
  49 #define GSM_MINOR               0
  50 #define GSM_MAJOR               1
  51
  52 #define GSM_OPT_VERBOSE         1
  53 #define GSM_OPT_FAST            2
  54 #define GSM_OPT_LTP_CUT         3
  55 #define GSM_OPT_WAV49           4
  56 #define GSM_OPT_FRAME_INDEX     5
  57 #define GSM_OPT_FRAME_CHAIN     6
  58
  59 extern gsm  gsm_create  GSM_P((void));
  60 extern void gsm_destroy GSM_P((gsm));
  61
  62 extern int  gsm_option  GSM_P((gsm, int, int *));
  63
  64 extern void gsm_encode  GSM_P((gsm, gsm_signal *, gsm_byte  *));
  65 extern int  gsm_decode  GSM_P((gsm, gsm_byte   *, gsm_signal *));
  66
  67 #undef  GSM_P
  68
  69 #endif  /* GSM_H */