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/*
** Copyright 2003-2010, VisualOn, Inc.
**
** Licensed under the Apache License, Version 2.0 (the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
**
** http://www.apache.org/licenses/LICENSE-2.0
**
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
*/
/*******************************************************************************
File: tns.h
Content: TNS structures
*******************************************************************************/
#ifndef _TNS_H
#define _TNS_H
#include "typedef.h"
#include "psy_const.h"
#define TNS_MAX_ORDER 12
#define TNS_MAX_ORDER_SHORT 5
#define FILTER_DIRECTION 0
typedef struct{ /*stuff that is tabulated dependent on bitrate etc. */
Word16 threshOn; /* min. prediction gain for using tns TABUL * 100*/
Word32 lpcStartFreq; /* lowest freq for lpc TABUL*/
Word32 lpcStopFreq; /* TABUL */
Word32 tnsTimeResolution;
}TNS_CONFIG_TABULATED;
typedef struct { /*assigned at InitTime*/
Word16 tnsActive;
Word16 tnsMaxSfb;
Word16 maxOrder; /* max. order of tns filter */
Word16 tnsStartFreq; /* lowest freq. for tns filtering */
Word16 coefRes;
TNS_CONFIG_TABULATED confTab;
Word32 acfWindow[TNS_MAX_ORDER+1];
Word16 tnsStartBand;
Word16 tnsStartLine;
Word16 tnsStopBand;
Word16 tnsStopLine;
Word16 lpcStartBand;
Word16 lpcStartLine;
Word16 lpcStopBand;
Word16 lpcStopLine;
Word16 tnsRatioPatchLowestCb;
Word16 tnsModifyBeginCb;
Word16 threshold; /* min. prediction gain for using tns TABUL * 100 */
}TNS_CONFIG;
typedef struct {
Word16 tnsActive;
Word32 parcor[TNS_MAX_ORDER];
Word16 predictionGain;
} TNS_SUBBLOCK_INFO; /* Word16 size: 26 */
typedef struct{
TNS_SUBBLOCK_INFO subBlockInfo[TRANS_FAC];
} TNS_DATA_SHORT;
typedef struct{
TNS_SUBBLOCK_INFO subBlockInfo;
} TNS_DATA_LONG;
typedef struct{
TNS_DATA_LONG tnsLong;
TNS_DATA_SHORT tnsShort;
}TNS_DATA_RAW;
typedef struct{
Word16 numOfSubblocks;
TNS_DATA_RAW dataRaw;
}TNS_DATA; /* Word16 size: 1 + 8*26 + 26 = 235 */
typedef struct{
Word16 tnsActive[TRANS_FAC];
Word16 coefRes[TRANS_FAC];
Word16 length[TRANS_FAC];
Word16 order[TRANS_FAC];
Word16 coef[TRANS_FAC*TNS_MAX_ORDER_SHORT];
}TNS_INFO; /* Word16 size: 72 */
#endif /* _TNS_H */
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