--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libtwamr/p_ol_wgh.h	Tue May 07 03:15:19 2024 +0000
@@ -0,0 +1,64 @@
+/*
+********************************************************************************
+*
+*      GSM AMR-NB speech codec   R98   Version 7.6.0   December 12, 2001
+*                                R99   Version 3.3.0                
+*                                REL-4 Version 4.1.0                
+*
+********************************************************************************
+*
+*      File             : p_ol_wgh.h
+*      Purpose          : Compute the open loop pitch lag with weighting.
+*
+********************************************************************************
+*/
+#ifndef p_ol_wgh_h
+#define p_ol_wgh_h "$Id $"
+ 
+/*
+********************************************************************************
+*                         INCLUDE FILES
+********************************************************************************
+*/
+#include "tw_amr.h"
+#include "typedef.h"
+#include "vad.h"
+
+/*
+********************************************************************************
+*                         DEFINITION OF DATA TYPES
+********************************************************************************
+*/
+/* state variable */
+typedef struct {
+   Word16 old_T0_med;
+   Word16 ada_w;
+   Word16 wght_flg; 
+} pitchOLWghtState;
+
+/*
+********************************************************************************
+*                         DECLARATION OF PROTOTYPES
+********************************************************************************
+*/
+ 
+void p_ol_wgh_reset (pitchOLWghtState *st);
+/* reset of pre processing state (i.e. set state memory to zero)
+   returns 0 on success
+ */
+
+Word16 Pitch_ol_wgh (     /* o   : open loop pitch lag                            */
+    pitchOLWghtState *st, /* i/o : State struct                                   */
+    vadState *vadSt,      /* i/o : VAD state struct                               */
+    Word16 signal[],      /* i   : signal used to compute the open loop pitch     */
+                          /*       signal[-pit_max] to signal[-1] should be known */
+    Word16 pit_min,       /* i   : minimum pitch lag                              */
+    Word16 pit_max,       /* i   : maximum pitch lag                              */
+    Word16 L_frame,       /* i   : length of frame to compute pitch               */
+    Word16 old_lags[],    /* i   : history with old stored Cl lags                */
+    Word16 ol_gain_flg[], /* i   : OL gain flag                                   */
+    Word16 idx,           /* i   : index                                          */
+    Flag dtx              /* i   : dtx flag; use dtx=1, do not use dtx=0          */
+    );
+ 
+#endif