--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/intercom/gsm/gsm.h	Fri Jun 25 09:57:52 2010 +0200
@@ -0,0 +1,155 @@
+/*
+ * 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.
+ */
+
+/*$Header: /home/kbs/jutta/src/gsm/gsm-1.0/inc/RCS/gsm.h,v 1.5 1994/01/25 22:20:48 jutta Exp $*/
+
+#ifndef	GSM_H
+#define	GSM_H
+
+#ifndef NeedFunctionPrototypes
+#if defined(__cplusplus) || defined(__STDC__) || defined(VMS)
+#	define	NeedFunctionPrototypes	1
+#endif
+#endif
+
+/* The above 5 lines used to be several #if ... it was changed to avoid 
+*   silly warnings and sintax errors of some compilers and to automate
+*   symbol definition for VMS!
+* #ifdef __cplusplus
+* #	define	NeedFunctionPrototypes	1
+* #endif
+* 
+* #if __STDC__
+* #	define	NeedFunctionPrototypes	1
+* #endif
+*/
+
+#ifdef _NO_PROTO
+#	undef	NeedFunctionPrototypes
+#endif
+
+#ifdef GSM_P
+#undef	GSM_P                   /* somewhere else may have defined this...      */
+#endif
+
+#ifdef NeedFunctionPrototypes
+#	define	GSM_P( protos )	protos
+#else
+#	define  GSM_P( protos )	( /* protos */ )
+#endif
+
+#ifdef NeedFunctionPrototypes
+#   include	<stdio.h>       /* for FILE *   */
+#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	3
+#define	GSM_MINOR	0
+#define	GSM_MAJOR	1
+
+#define	GSM_OPT_VERBOSE	1
+#define	GSM_OPT_FAST	2
+
+
+/* 
+ *	Prototypes generated automatically by cproto ...
+ */
+
+/* Prototypes for functions defined in file add.c */
+extern word gsm_add GSM_P((word a, word b));
+word gsm_sub GSM_P((word a, word b));
+word gsm_mult GSM_P((word a, word b));
+word gsm_mult_r GSM_P((word a, word b));
+word gsm_abs GSM_P((word a));
+longword gsm_L_mult GSM_P((word a, word b));
+longword gsm_L_add GSM_P((longword a, longword b));
+longword gsm_L_sub GSM_P((longword a, longword b));
+word gsm_norm GSM_P((longword a));
+longword gsm_L_asl GSM_P((longword a, int n));
+word gsm_asl GSM_P((word a, int n));
+longword gsm_L_asr GSM_P((longword a, int n));
+word gsm_asr GSM_P((word a, int n));
+word gsm_div GSM_P((word num, word denum));
+
+/* Prototypes for functions defined in file code.c */
+void Gsm_Coder GSM_P((struct gsm_state * S, word * s, word * LARc,
+    word * Nc, word * bc, word * Mc, word * xmaxc, word * xMc));
+
+/* Prototypes for functions defined in file decode.c */
+void Gsm_Decoder GSM_P((struct gsm_state * S, word * LARcr, word * Ncr,
+    word * bcr, word * Mcr, word * xmaxcr, word * xMcr, word * s));
+
+/* Prototypes for functions defined in file long_term.c */
+void Gsm_Long_Term_Predictor GSM_P((struct gsm_state * S, word * d,
+    word * dp, word * e, word * dpp, word * Nc, word * bc));
+void Gsm_Long_Term_Synthesis_Filtering GSM_P((struct gsm_state * S,
+    word Ncr, word bcr, register word * erp, register word * drp));
+
+/* Prototypes for functions defined in file lpc.c */
+void Gsm_LPC_Analysis GSM_P((struct gsm_state * S, word * s,
+    word * LARc));
+
+/* Prototypes for functions defined in file preprocess.c */
+void Gsm_Preprocess GSM_P((struct gsm_state * S, word * s, word * so));
+
+/* Prototypes for functions defined in file rpe.c */
+void Gsm_RPE_Encoding GSM_P((struct gsm_state * S, word * e,
+    word * xmaxc, word * Mc, word * xMc));
+void Gsm_RPE_Decoding GSM_P((struct gsm_state * S, word xmaxcr,
+    word Mcr, word * xMcr, word * erp));
+
+/* Prototypes for functions defined in file gsm_destroy.c */
+void gsm_destroy GSM_P((gsm S));
+
+/* Prototypes for functions defined in file gsm_decode.c */
+int gsm_decode GSM_P((gsm s, gsm_byte * c, gsm_signal * target));
+
+/* Prototypes for functions defined in file gsm_encode.c */
+void gsm_encode GSM_P((gsm s, gsm_signal * source, gsm_byte * c));
+
+/* Prototypes for functions defined in file gsm_explode.c */
+int gsm_explode GSM_P((gsm s, gsm_byte * c, gsm_signal * target));
+
+/* Prototypes for functions defined in file gsm_implode.c */
+void gsm_implode GSM_P((gsm s, gsm_signal * source, gsm_byte * c));
+
+/* Prototypes for functions defined in file gsm_create.c */
+gsm gsm_create GSM_P((void));
+
+/* Prototypes for functions defined in file gsm_print.c */
+int gsm_print GSM_P((FILE * f, gsm s, gsm_byte * c));
+
+/* Prototypes for functions defined in file gsm_option.c */
+int gsm_option GSM_P((gsm r, int opt, int *val));
+
+/* Prototypes for functions defined in file short_term.c */
+void Gsm_Short_Term_Analysis_Filter GSM_P((struct gsm_state * S,
+    word * LARc, word * s));
+void Gsm_Short_Term_Synthesis_Filter GSM_P((struct gsm_state * S,
+    word * LARcr, word * wt, word * s));
+
+/* These prototypes only when debugging is enabled! */
+#ifndef NDEBUG
+void gsm_debug_words GSM_P((char *name, int from, int to, word * ptr));
+void gsm_debug_longwords GSM_P((char *name, int from, int to,
+    longword * ptr));
+void gsm_debug_longword GSM_P((char *name, longword value));
+void gsm_debug_word GSM_P((char *name, word value));
+#endif
+
+#undef	GSM_P
+
+#endif                          /* GSM_H */