filtbank.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: filtbank.h,v 1.3 2001/06/04 23:02:24 wmay Exp $
- */
- #ifndef FILTBANK_H
- #define FILTBANK_H
- #ifdef __cplusplus
- extern "C" {
- #endif /* __cplusplus */
- #include "frame.h"
- #define NFLAT_LS 448
- #define MOVERLAPPED 0
- #define MNON_OVERLAPPED 1
- #define SINE_WINDOW 0
- #define KBD_WINDOW 1
- void FilterBankInit(faacEncHandle hEncoder);
- void FilterBankEnd(faacEncHandle hEncoder);
- void FilterBank(faacEncHandle hEncoder,
- CoderInfo *coderInfo,
- double *p_in_data,
- double *p_out_mdct,
- double *p_overlap,
- int overlap_select);
- void IFilterBank(faacEncHandle hEncoder,
- CoderInfo *coderInfo,
- double *p_in_data,
- double *p_out_mdct,
- double *p_overlap,
- int overlap_select);
- void specFilter(double *freqBuff,
- int sampleRate,
- int lowpassFreq,
- int specLen
- );
- static void CalculateKBDWindow(double* win, double alpha, int length);
- static double Izero(double x);
- static void MDCT(double *data, int N);
- static void IMDCT(double *data, int N);
- #ifdef __cplusplus
- }
- #endif /* __cplusplus */
- #endif /* FILTBANK_H */