ref: bca4f2b1da059fbf49a117f447b16b244fa7329a
dir: /libfaad/mdct.h/
/* ** FAAD - Freeware Advanced Audio Decoder ** Copyright (C) 2002 M. Bakker ** ** This program is free software; you can redistribute it and/or modify ** it under the terms of the GNU General Public License as published by ** the Free Software Foundation; either version 2 of the License, or ** (at your option) any later version. ** ** This program 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 General Public License for more details. ** ** You should have received a copy of the GNU General Public License ** along with this program; if not, write to the Free Software ** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. ** ** $Id: mdct.h,v 1.1 2002/01/14 19:15:56 menno Exp $ **/ #ifndef __MDCT_H__ #define __MDCT_H__ #ifdef __cplusplus extern "C" { #endif typedef float fftw_real; typedef struct { fftw_real re, im; } fftw_complex; #define c_re(c) ((c).re) #define c_im(c) ((c).im) #define DEFINE_PFFTW(size) \ void pfftwi_##size(fftw_complex *input); \ void pfftw_##size(fftw_complex *input); \ int pfftw_permutation_##size(int i); DEFINE_PFFTW(16) DEFINE_PFFTW(32) DEFINE_PFFTW(64) DEFINE_PFFTW(128) DEFINE_PFFTW(512) void make_fft_order(short *unscrambled64, short *unscrambled512); void IMDCT_long(fftw_real *in_data, fftw_real *out_data, short *unscrambled); void IMDCT_short(fftw_real *in_data, fftw_real *out_data, short *unscrambled); void MDCT_long(fftw_real *in_data, fftw_real *out_data, short *unscrambled); void MDCT_short(fftw_real *in_data, fftw_real *out_data, short *unscrambled); #define PFFTW(name) CONCAT(pfftw_, name) #define PFFTWI(name) CONCAT(pfftwi_, name) #define CONCAT_AUX(a, b) a ## b #define CONCAT(a, b) CONCAT_AUX(a,b) #define FFTW_KONST(x) ((fftw_real) x) void PFFTW(twiddle_4)(fftw_complex *A, const fftw_complex *W, int iostride); void PFFTWI(twiddle_4)(fftw_complex *A, const fftw_complex *W, int iostride); #ifdef __cplusplus } #endif #endif