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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): Josef Hoepfl
Description: temporal noise shaping tool
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 TNS_H
#define TNS_H
#include "common_fix.h"
enum
{
TNS_MAX_WINDOWS = 8, /* 8 */
TNS_MAXIMUM_ORDER = 20, /* 12 for AAC-LC and AAC-SSR. Set to 20 for AAC-Main (AOT 1). Some broken encoders also do order 20 for AAC-LC :( */
TNS_MAXIMUM_FILTERS = 3
};
typedef struct
{
SCHAR Coeff[TNS_MAXIMUM_ORDER];
UCHAR StartBand;
UCHAR StopBand;
SCHAR Direction;
SCHAR Resolution;
UCHAR Order;
} CFilter;
typedef struct
{
CFilter Filter[TNS_MAX_WINDOWS][TNS_MAXIMUM_FILTERS];
UCHAR NumberOfFilters[TNS_MAX_WINDOWS];
UCHAR DataPresent;
UCHAR Active;
} CTnsData;
void CTns_Reset(CTnsData *pTnsData);
#endif /* #ifndef TNS_H */
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