1 /* 2 * FAAC - Freeware Advanced Audio Coder 3 * Copyright (C) 2001 Menno Bakker 4 * 5 * This library is free software; you can redistribute it and/or 6 * modify it under the terms of the GNU Lesser General Public 7 * License as published by the Free Software Foundation; either 8 * version 2.1 of the License, or (at your option) any later version. 9 * 10 * This library is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 * Lesser General Public License for more details. 14 15 * You should have received a copy of the GNU Lesser General Public 16 * License along with this library; if not, write to the Free Software 17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 18 * 19 * $Id: filtbank.h,v 1.12 2012/03/01 18:34:17 knik Exp $ 20 */ 21 22 #ifndef FILTBANK_H 23 #define FILTBANK_H 24 25 #ifdef __cplusplus 26 extern "C" { 27 #endif /* __cplusplus */ 28 29 #include "frame.h" 30 31 #ifdef DRM 32 #define NFLAT_LS (( BLOCK_LEN_LONG - BLOCK_LEN_SHORT ) / 2) 33 #else 34 #define NFLAT_LS 448 35 #endif 36 37 #define MOVERLAPPED 0 38 #define MNON_OVERLAPPED 1 39 40 41 #define SINE_WINDOW 0 42 #define KBD_WINDOW 1 43 44 void FilterBankInit ( faacEncStruct* hEncoder ); 45 46 void FilterBankEnd ( faacEncStruct* hEncoder ); 47 48 void FilterBank( faacEncStruct* hEncoder, 49 CoderInfo *coderInfo, 50 double *p_in_data, 51 double *p_out_mdct, 52 double *p_overlap, 53 int overlap_select ); 54 55 void IFilterBank( faacEncStruct* hEncoder, 56 CoderInfo *coderInfo, 57 double *p_in_data, 58 double *p_out_mdct, 59 double *p_overlap, 60 int overlap_select ); 61 62 void specFilter( double *freqBuff, 63 int sampleRate, 64 int lowpassFreq, 65 int specLen ); 66 67 #ifdef __cplusplus 68 } 69 #endif /* __cplusplus */ 70 71 #endif /* FILTBANK_H */ 72