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/***************************** MPEG-4 AAC Decoder **************************
(C) Copyright Fraunhofer IIS (2004)
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.
$Id$
Author(s): Christian Griebel
Description: Dynamic range control (DRC) decoder tool for SBR
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.
******************************************************************************/
#ifndef _SBRDEC_DRC_H_
#define _SBRDEC_DRC_H_
#include "sbrdecoder.h"
#define SBRDEC_MAX_DRC_CHANNELS (6)
#define SBRDEC_MAX_DRC_BANDS ( 16 )
typedef struct
{
FIXP_DBL prevFact_mag[(64)];
INT prevFact_exp;
FIXP_DBL currFact_mag[SBRDEC_MAX_DRC_BANDS];
FIXP_DBL nextFact_mag[SBRDEC_MAX_DRC_BANDS];
INT currFact_exp;
INT nextFact_exp;
UINT numBandsCurr;
UINT numBandsNext;
USHORT bandTopCurr[SBRDEC_MAX_DRC_BANDS];
USHORT bandTopNext[SBRDEC_MAX_DRC_BANDS];
SHORT drcInterpolationSchemeCurr;
SHORT drcInterpolationSchemeNext;
SHORT enable;
UCHAR winSequenceCurr;
UCHAR winSequenceNext;
} SBRDEC_DRC_CHANNEL;
typedef SBRDEC_DRC_CHANNEL * HANDLE_SBR_DRC_CHANNEL;
void sbrDecoder_drcInitChannel (
HANDLE_SBR_DRC_CHANNEL hDrcData );
void sbrDecoder_drcUpdateChannel (
HANDLE_SBR_DRC_CHANNEL hDrcData );
void sbrDecoder_drcApplySlot (
HANDLE_SBR_DRC_CHANNEL hDrcData,
FIXP_DBL *qmfRealSlot,
FIXP_DBL *qmfImagSlot,
int col,
int numQmfSubSamples,
int maxShift );
void sbrDecoder_drcApply (
HANDLE_SBR_DRC_CHANNEL hDrcData,
FIXP_DBL **QmfBufferReal,
FIXP_DBL **QmfBufferImag,
int numQmfSubSamples,
int *scaleFactor );
#endif /* _SBRDEC_DRC_H_ */
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