--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libgsmhr1/typedefs.h	Wed Jun 19 00:49:48 2024 +0000
@@ -0,0 +1,61 @@
+/*******************************************************************
+ *
+ * typedef statements of types used in all half-rate GSM routines
+ *
+ ******************************************************************/
+
+#ifndef __TYPEDEFS
+#define __TYPEDEFS
+
+#define DATE    "August 8, 1996    "
+#define VERSION "Version 4.2       "
+
+#define LW_SIGN (long)0x80000000       /* sign bit */
+#define LW_MIN (long)0x80000000
+#define LW_MAX (long)0x7fffffff
+
+#define SW_SIGN (short)0x8000          /* sign bit for Shortword type */
+#define SW_MIN (short)0x8000           /* smallest Ram */
+#define SW_MAX (short)0x7fff           /* largest Ram */
+
+/* Definition of Types *
+ ***********************/
+
+typedef long int Longword;             /* 32 bit "accumulator" (L_*) */
+typedef short int Shortword;           /* 16 bit "register"  (sw*) */
+typedef short int ShortwordRom;        /* 16 bit ROM data    (sr*) */
+typedef long int LongwordRom;          /* 32 bit ROM data    (L_r*)  */
+
+struct NormSw
+{                                      /* normalized Shortword fractional
+                                        * number snr.man precedes snr.sh (the
+                                        * shift count)i */
+  Shortword man;                       /* "mantissa" stored in 16 bit
+                                        * location */
+  Shortword sh;                        /* the shift count, stored in 16 bit
+                                        * location */
+};
+
+/* Global constants *
+ ********************/
+
+#define NP 10                          /* order of the lpc filter */
+#define N_SUB 4                        /* number of subframes */
+#define F_LEN 160                      /* number of samples in a frame */
+#define S_LEN 40                       /* number of samples in a subframe */
+#define A_LEN 170                      /* LPC analysis length */
+#define OS_FCTR 6                      /* maximum LTP lag oversampling
+                                        * factor */
+
+#define OVERHANG 8                     /* vad parameter */
+#define strStr strStr16
+
+/* global variables */
+/********************/
+
+extern int giFrmCnt;                   /* 0,1,2,3,4..... */
+extern int giSfrmCnt;                  /* 0,1,2,3 */
+
+extern int giDTXon;                    /* DTX Mode on/off */
+
+#endif