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 16typedef struct gsm_state * gsm ; 17typedef short gsm_signal ; /* signed 16 bit */ 18typedef unsigned char gsm_byte ; 19typedef 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 34gsm gsm_create (void) ; 35 36/* Added for libsndfile : May 6, 2002 */ 37void gsm_init (gsm) ; 38 39void gsm_destroy (gsm) ; 40 41int gsm_print (FILE *, gsm, gsm_byte *) ; 42int gsm_option (gsm, int, int *) ; 43 44void gsm_encode (gsm, gsm_signal *, gsm_byte *) ; 45int gsm_decode (gsm, gsm_byte *, gsm_signal *) ; 46 47int gsm_explode (gsm, gsm_byte *, gsm_signal *) ; 48void gsm_implode (gsm, gsm_signal *, gsm_byte *) ; 49 50#endif /* GSM_H */ 51 52 53