g_pitch.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 62 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
**
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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             : g_pitch.h
*      Purpose          : Compute the pitch (adaptive codebook) gain.
*
********************************************************************************
*/
#ifndef g_pitch_h
#define g_pitch_h "$Id $"
 
/*
********************************************************************************
*                         INCLUDE FILES
********************************************************************************
*/
#include "typedef.h"
#include "mode.h"
 
/*
********************************************************************************
*                         DECLARATION OF PROTOTYPES
********************************************************************************
*/
Word16 G_pitch     (    /* o : Gain of pitch lag saturated to 1.2       */
    enum Mode mode,     /* i : AMR mode                                 */
    Word16 xn[],        /* i : Pitch target.                            */
    Word16 y1[],        /* i : Filtered adaptive codebook.              */
    Word16 g_coeff[],   /* i : Correlations need for gain quantization.
                               (7.4 only). Pass NULL if not needed      */
    Word16 L_subfr      /* i : Length of subframe.                      */
);
 
#endif