ol_ltp.h

Trolltech公司发布的图形界面操作系统。可在qt-embedded-2.3.10平台上编译为嵌入式图形界面操作系统。

/**********************************************************************
** 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.
**
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** 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
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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             : ol_ltp.h
*      Purpose          : Compute the open loop pitch lag.
*
********************************************************************************
*/
#ifndef ol_ltp_h
#define ol_ltp_h "$Id $"
 
/*
********************************************************************************
*                         INCLUDE FILES
********************************************************************************
*/
#include "typedef.h"
#include "mode.h"
#include "p_ol_wgh.h"

/*
********************************************************************************
*                         DECLARATION OF PROTOTYPES
********************************************************************************
*/
int ol_ltp(
    pitchOLWghtState *st, /* i/o : State struct                            */
    vadState *vadSt,      /* i/o : VAD state struct                        */
    enum Mode mode,       /* i   : coder mode                              */
    Word16 wsp[],         /* i   : signal used to compute the OL pitch, Q0 */
                          /*       uses signal[-pit_max] to signal[-1]     */
    Word16 *T_op,         /* o   : open loop pitch lag,                 Q0 */
    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