tns.h
资源名称:NETVIDEO.rar [点击查看]
上传用户:sun1608
上传日期:2007-02-02
资源大小:6116k
文件大小:2k
源码类别:
流媒体/Mpeg4/MP4
开发平台:
Visual C++
- /*
- * FAAC - Freeware Advanced Audio Coder
- * Copyright (C) 2001 Menno Bakker
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- * $Id: tns.h,v 1.5 2001/06/04 23:02:24 wmay Exp $
- */
- #ifndef TNS_H
- #define TNS_H
- #ifdef __cplusplus
- extern "C" {
- #endif /* __cplusplus */
- /*************************/
- /* Function prototypes */
- /*************************/
- static void Autocorrelation(int maxOrder, /* Maximum autocorr order */
- int dataSize, /* Size of the data array */
- double* data, /* Data array */
- double* rArray); /* Autocorrelation array */
- static double LevinsonDurbin(int maxOrder, /* Maximum filter order */
- int dataSize, /* Size of the data array */
- double* data, /* Data array */
- double* kArray); /* Reflection coeff array */
- static void StepUp(int fOrder, double* kArray, double* aArray);
- static void QuantizeReflectionCoeffs(int fOrder,int coeffRes,double* rArray,int* indexArray);
- static int TruncateCoeffs(int fOrder,double threshold,double* kArray);
- static void TnsFilter(int length,double* spec,TnsFilterData* filter);
- static void TnsInvFilter(int length,double* spec,TnsFilterData* filter);
- void TnsInit(faacEncHandle hEncoder);
- void TnsEncode(TnsInfo* tnsInfo, int numberOfBands,int maxSfb,enum WINDOW_TYPE blockType,
- int* sfbOffsetTable,double* spec);
- void TnsEncodeFilterOnly(TnsInfo* tnsInfo, int numberOfBands, int maxSfb,
- enum WINDOW_TYPE blockType, int *sfbOffsetTable, double *spec);
- void TnsDecodeFilterOnly(TnsInfo* tnsInfo, int numberOfBands, int maxSfb,
- enum WINDOW_TYPE blockType, int *sfbOffsetTable, double *spec);
- #ifdef __cplusplus
- }
- #endif /* __cplusplus */
- #endif /* TNS_H */