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