62 lines
1.5 KiB
C
62 lines
1.5 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: polyphase.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: polyphase class - HEADER
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*
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*
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\***************************************************************************/
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/*
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* $Date: 2011/02/14 14:48:56 $
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* $Id: polyphase.h,v 1.6 2011/02/14 14:48:56 bigg Exp $
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*/
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#pragma once
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//#ifndef __POLYPHASE_H__
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//#define __POLYPHASE_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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#define HAN_SIZE 512
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/*-------------------------------------------------------------------------*/
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// Class for (inverse) Polyphase calculation.
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class CPolyphase
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{
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public:
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CPolyphase(const MPEG_INFO &_info);
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~CPolyphase() {}
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void Init();
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float *Apply(POLYSPECTRUM &sample, float *pPcm, int frms=18);
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static void Reorder(int channels, POLYSPECTRUM &output, const SPECTRUM &input);
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protected:
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int bufOffset;
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NALIGN(16) float syn_buf[2][HAN_SIZE];
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const MPEG_INFO &info ; // info-structure
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void window_band_m(int bufOffset, float *out_samples) const;
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void window_band_s(int bufOffset, float *out_samples) const;
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};
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/*-------------------------------------------------------------------------*/
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//#endif
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