libfaad2/sbr_dct.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: sbr_dct.h,v 1.15 2004/09/04 14:56:28 menno Exp $
  26 **/
  27
  28 #ifndef __SBR_DCT_H__
  29 #define __SBR_DCT_H__
  30
  31 #ifdef __cplusplus
  32 extern "C" {
  33 #endif
  34
  35 void dct4_kernel(real_t * in_real, real_t * in_imag, real_t * out_real, real_t * out_imag);
  36
  37 void DCT3_32_unscaled(real_t *y, real_t *x);
  38 void DCT4_32(real_t *y, real_t *x);
  39 void DST4_32(real_t *y, real_t *x);
  40 void DCT2_32_unscaled(real_t *y, real_t *x);
  41 void DCT4_16(real_t *y, real_t *x);
  42 void DCT2_16_unscaled(real_t *y, real_t *x);
  43
  44
  45 #ifdef __cplusplus
  46 }
  47 #endif
  48 #endif
  49