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62 lines
1.4 KiB
C
62 lines
1.4 KiB
C
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/***************************************************************************\
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*
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* MPEG Layer3-Audio Decoder
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* <EFBFBD> 1997-2006 by Fraunhofer IIS
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* All Rights Reserved
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*
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* filename: mdct.h
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* project : ISO/MPEG-Decoder
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* author : Stefan Gewinner
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* date : 1998-05-26
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* contents/description: mdct class - HEADER
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*
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*
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\***************************************************************************/
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/*
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* $Date: 2011/01/18 18:22:03 $
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* $Id: mdct.h,v 1.4 2011/01/18 18:22:03 audiodsp Exp $
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*/
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#ifndef __MDCT_H__
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#define __MDCT_H__
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/* ------------------------ includes --------------------------------------*/
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#include "mpeg.h"
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#include "foundation/align.h"
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/*-------------------------------------------------------------------------*/
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//
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// MDCT class.
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//
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// This object performs the frequency-to-time mapping.
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//
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class CMdct
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{
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public :
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CMdct(const MPEG_INFO &_info);
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~CMdct() {}
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void Init();
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void Apply(int ch, const MP3SI_GRCH &SiGrCH, SPECTRUM &rs);
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protected :
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void cos_t_h_long (float *prev,float *dest,const float *win);
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void cos_t_h_short(float *prev,float *dest,const float *win);
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float hybrid_res[36];
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NALIGN(16) float cost36_rese[9];
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NALIGN(16) float cost36_reso[9];
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const MPEG_INFO &info;
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SPECTRUM prevblck;
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};
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/*-------------------------------------------------------------------------*/
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#endif
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