/*
********************************************************************************
*
*      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             : pitch_ol.h
*      Purpose          : Compute the open loop pitch lag.
*
********************************************************************************
*/
#ifndef pitch_ol_h
#define pitch_ol_h "$Id $"
 
/*
********************************************************************************
*                         INCLUDE FILES
********************************************************************************
*/
#include "typedef.h"
#include "mode.h"
#include "vad.h"

/*
********************************************************************************
*                         DEFINITION OF DATA TYPES
********************************************************************************
*/
 
/*
********************************************************************************
*                         DECLARATION OF PROTOTYPES
********************************************************************************
*/
Word16 Pitch_ol (      /* o   : open loop pitch lag                         */
    vadState *vadSt,   /* i/o : VAD state struct                            */
    enum Mode mode,    /* i   : coder mode                                  */
    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 idx,        /* i   : frame index                                 */
    Flag dtx           /* i   : dtx flag; use dtx=1, do not use dtx=0       */
    );
 
#endif