/*-------------------------------------------------------------------------
 * pflms.h Partioned Frequency Least-Mean-Square adaptive algorithm
 * $Id: $
 *-------------------------------------------------------------------------
 *
 * Copyright (C) 2001  Algo Vision Systems GmbH
 *
 *-------------------------------------------------------------------------
 */

#ifndef _PFLMS_H
#define _PFLMS_H
#include "pfft.h"

/*-----------------------------------------------------------------------*/
/* PFLMS-Parameter */
/*-----------------------------------------------------------------------*/

typedef struct _sPFLMS
{
  UINT32  N, P, S, L, C;       /* PFLMS-Parameter N, P, S, L, C       */
  FLOAT32 gamma;               /* Sicherheitskonstannte               */ 
  CMPXBUF *pBufX, *pBufWS;     /* komplexe Puffer X[P*S][C], WS[P][C] */
  CMPXBUF *pX, *pWS, *pPj;     /* aktuelle Zeiger auf Puffer[p][]     */
  COMPLEX *pTemp;              /* temporaerer Puffer fuer Y[] und E[] */
  REALBUF *pBufMu;             /* reeller Puffer Mu[P*S][C]           */
  REALBUF *pMu;                /* Aktueller zeiger auf Mu[k-p*S]      */ 
  FLOAT32 *pBufPX;             /* reeller Puffer PX[C]                */ 
  FLOAT32 *pBufXsave;          /* Overlap-Save Puffer xs[S*L]         */
  FFT *pFFT;                   /* FFT-Objekt                          */
} PFLMS;


AVERR PflmsInit(PFLMS *pObj,UINT32 N, UINT32 P, UINT32 S, UINT32 L, UINT32 C);
AVERR PflmsInitFilter(PFLMS *pObj, FLOAT32 *pWTD);
AVERR Pflms(PFLMS *pObj, FLOAT32 *pInTDx, FLOAT32 *pInTDd, FLOAT32 *pOutTDy, FLOAT32 *pOutTDe, FLOAT32 alpha);

#endif /* _PFLMS_H */