1 /*****************************************************************************
2 * ac3_imdct.h : AC3 IMDCT types
3 *****************************************************************************
4 * Copyright (C) 1999, 2000 VideoLAN
5 * $Id: ac3_imdct.h,v 1.3 2001/05/15 16:19:42 sam Exp $
7 * Authors: Michel Kaempf <maxx@via.ecp.fr>
8 * Renaud Dartus <reno@videolan.org>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
23 *****************************************************************************/
25 typedef struct complex_s {
32 typedef struct imdct_s
36 /* Delay buffer for time domain interleaving */
40 /* Twiddle factors for IMDCT */
46 /* Twiddle factor LUT */
56 float xcos_sin_sse[128 * 4] __attribute__((aligned(16)));
58 /* Module used and shortcuts */
59 struct module_s * p_module;
60 void (*pf_imdct_init) (struct imdct_s *);
61 //void (*pf_fft_64p) (complex_t *a);
62 void (*pf_imdct_256)(struct imdct_s *, float data[], float delay[]);
63 void (*pf_imdct_256_nol)(struct imdct_s *, float data[], float delay[]);
64 void (*pf_imdct_512)(struct imdct_s *, float data[], float delay[]);
65 void (*pf_imdct_512_nol)(struct imdct_s *, float data[], float delay[]);