+
−/*
+
−********************************************************************************
+
−*
+
−*      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