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/****************************************************************************
(C) Copyright Fraunhofer IIS (2005)
All Rights Reserved
Please be advised that this software and/or program delivery is
Confidential Information of Fraunhofer and subject to and covered by the
Fraunhofer IIS Software Evaluation Agreement
between Google Inc. and Fraunhofer
effective and in full force since March 1, 2012.
You may use this software and/or program only under the terms and
conditions described in the above mentioned Fraunhofer IIS Software
Evaluation Agreement. Any other and/or further use requires a separate agreement.
This software and/or program is protected by copyright law and international
treaties. Any reproduction or distribution of this software and/or program,
or any portion of it, may result in severe civil and criminal penalties, and
will be prosecuted to the maximum extent possible under law.
$Id$
*******************************************************************************/
#ifndef __HYBRID_H
#define __HYBRID_H
#include "sbrdecoder.h"
#define HYBRID_FILTER_LENGTH 13
#define HYBRID_FILTER_DELAY 6
#define FAST_FILTER2
#define FAST_FILTER4
#define FAST_FILTER8
#define FAST_FILTER12
#define FFT_IDX_R(a) (2*a)
#define FFT_IDX_I(a) (2*a+1)
#define FIXP_FFT_IDX_R(a) (a<<1)
#define FIXP_FFT_IDX_I(a) ((a<<1) + 1)
typedef enum {
HYBRID_2_REAL = 2,
HYBRID_4_CPLX = 4,
HYBRID_8_CPLX = 8,
HYBRID_12_CPLX = 12
} HYBRID_RES;
typedef struct
{
SCHAR nQmfBands;
SCHAR frameSize;
SCHAR qmfBufferMove;
UCHAR pResolution[3];
FIXP_DBL mQmfBufferRealSlot[3][HYBRID_FILTER_LENGTH]; /**< Stores old Qmf samples. */
FIXP_DBL mQmfBufferImagSlot[3][HYBRID_FILTER_LENGTH];
SCHAR sf_mQmfBuffer;
} HYBRID;
typedef HYBRID *HANDLE_HYBRID;
void
fillHybridDelayLine( FIXP_DBL **fixpQmfReal,
FIXP_DBL **fixpQmfImag,
FIXP_DBL fixpHybridLeftR[12],
FIXP_DBL fixpHybridLeftI[12],
FIXP_DBL fixpHybridRightR[12],
FIXP_DBL fixpHybridRightI[12],
HANDLE_HYBRID hHybrid );
void
slotBasedHybridAnalysis ( FIXP_DBL *fixpQmfReal,
FIXP_DBL *fixpQmfImag,
FIXP_DBL *fixpHybridReal,
FIXP_DBL *fixpHybridImag,
HANDLE_HYBRID hHybrid);
void
slotBasedHybridSynthesis ( FIXP_DBL *fixpHybridReal,
FIXP_DBL *fixpHybridImag,
FIXP_DBL *fixpQmfReal,
FIXP_DBL *fixpQmfImag,
HANDLE_HYBRID hHybrid );
SBR_ERROR InitHybridFilterBank ( HANDLE_HYBRID hHybrid,
SCHAR frameSize,
SCHAR noBands,
const UCHAR *pResolution );
#endif /* __HYBRID_H */
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