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/*************************************************************************** *
* MPEG Layer3-Audio Decoder
* © 1997-2006 by Fraunhofer IIS
* All Rights Reserved
*
* filename: polyphase.h
* project : ISO/MPEG-Decoder
* author : Stefan Gewinner
* date : 1998-05-26
* contents/description: polyphase class - HEADER
*
*
\***************************************************************************/
/*
* $Date: 2011/02/14 14:48:56 $
* $Id: polyphase.h,v 1.6 2011/02/14 14:48:56 bigg Exp $
*/
#pragma once
//#ifndef __POLYPHASE_H__
//#define __POLYPHASE_H__
/* ------------------------ includes --------------------------------------*/
#include "mpeg.h"
#include "foundation/align.h"
/*-------------------------------------------------------------------------*/
#define HAN_SIZE 512
/*-------------------------------------------------------------------------*/
// Class for (inverse) Polyphase calculation.
class CPolyphase
{
public:
CPolyphase(const MPEG_INFO &_info);
~CPolyphase() {}
void Init();
float *Apply(POLYSPECTRUM &sample, float *pPcm, int frms=18);
static void Reorder(int channels, POLYSPECTRUM &output, const SPECTRUM &input);
protected:
int bufOffset;
NALIGN(16) float syn_buf[2][HAN_SIZE];
const MPEG_INFO &info ; // info-structure
void window_band_m(int bufOffset, float *out_samples) const;
void window_band_s(int bufOffset, float *out_samples) const;
};
/*-------------------------------------------------------------------------*/
//#endif
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