pitch_ol.h

来自「Trolltech公司发布的图形界面操作系统。可在qt-embedded-2.3」· C头文件 代码 · 共 72 行

/**********************************************************************
** Copyright (C) 2000-2005 Trolltech AS and its licensors.
** All rights reserved.
**
** This file is part of the Qtopia Environment.
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** See http://www.trolltech.com/gpl/ for GPL licensing information.
** See below for additional copyright and license information
**
** Contact [e-mail] if any conditions of this licensing are
** not clear to you.
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**********************************************************************/
/*
********************************************************************************
*
*      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