interpretor/libsndfile-1.0.25/src/GSM610/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 #ifndef GSM_H
   8 #define GSM_H
   9
  10 #include        <stdio.h>               /* for FILE *   */
  11
  12 /*
  13  *      Interface
  14  */
  15
  16 typedef struct gsm_state *      gsm;
  17 typedef short                           gsm_signal;             /* signed 16 bit */
  18 typedef unsigned char           gsm_byte;
  19 typedef gsm_byte                        gsm_frame[33];          /* 33 * 8 bits   */
  20
  21 #define GSM_MAGIC               0xD                     /* 13 kbit/s RPE-LTP */
  22
  23 #define GSM_PATCHLEVEL          10
  24 #define GSM_MINOR                       0
  25 #define GSM_MAJOR                       1
  26
  27 #define GSM_OPT_VERBOSE         1
  28 #define GSM_OPT_FAST            2
  29 #define GSM_OPT_LTP_CUT         3
  30 #define GSM_OPT_WAV49           4
  31 #define GSM_OPT_FRAME_INDEX     5
  32 #define GSM_OPT_FRAME_CHAIN     6
  33
  34 gsm  gsm_create         (void);
  35
  36 /* Added for libsndfile : May 6, 2002 */
  37 void gsm_init (gsm);
  38
  39 void gsm_destroy (gsm);
  40
  41 int  gsm_print   (FILE *, gsm, gsm_byte  *);
  42 int  gsm_option  (gsm, int, int *);
  43
  44 void gsm_encode  (gsm, gsm_signal *, gsm_byte  *);
  45 int  gsm_decode  (gsm, gsm_byte   *, gsm_signal *);
  46
  47 int  gsm_explode (gsm, gsm_byte   *, gsm_signal *);
  48 void gsm_implode (gsm, gsm_signal *, gsm_byte   *);
  49
  50 #endif  /* GSM_H */
  51
  52