libfaad2/cfft.h

   1 /*
   2 ** FAAD2 - Freeware Advanced Audio (AAC) Decoder including SBR decoding
   3 ** Copyright (C) 2003-2004 M. Bakker, Ahead Software AG, http://www.nero.com
   4 **
   5 ** This program is free software; you can redistribute it and/or modify
   6 ** it under the terms of the GNU General Public License as published by
   7 ** the Free Software Foundation; either version 2 of the License, or
   8 ** (at your option) any later version.
   9 **
  10 ** This program 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
  13 ** GNU General Public License for more details.
  14 **
  15 ** You should have received a copy of the GNU General Public License
  16 ** along with this program; if not, write to the Free Software
  17 ** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18 **
  19 ** Any non-GPL usage of this software or parts of this software is strictly
  20 ** forbidden.
  21 **
  22 ** Commercial non-GPL licensing of this software is possible.
  23 ** For more info contact Ahead Software through Mpeg4AAClicense@nero.com.
  24 **
  25 ** $Id: cfft.h,v 1.20 2004/09/08 09:43:11 gcp Exp $
  26 **/
  27
  28 #ifndef __CFFT_H__
  29 #define __CFFT_H__
  30
  31 #ifdef __cplusplus
  32 extern "C" {
  33 #endif
  34
  35 typedef struct
  36 {
  37     uint16_t n;
  38     uint16_t ifac[15];
  39     complex_t *work;
  40     complex_t *tab;
  41 } cfft_info;
  42
  43
  44 void cfftf(cfft_info *cfft, complex_t *c);
  45 void cfftb(cfft_info *cfft, complex_t *c);
  46 cfft_info *cffti(uint16_t n);
  47 void cfftu(cfft_info *cfft);
  48
  49
  50 #ifdef __cplusplus
  51 }
  52 #endif
  53 #endif