1 /*****************************************************************************
2 * ac3_internals.h: needed by the ac3 decoder
3 *****************************************************************************
4 * Copyright (C) 2000 VideoLAN
5 * $Id: ac3_internal.h,v 1.8 2001/03/21 13:42:34 sam Exp $
7 * Authors: Michel Lespinasse <walken@zoy.org>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
22 *****************************************************************************/
24 /* Exponent strategy constants */
30 /* Delta bit allocation constants */
31 #define DELTA_BIT_REUSE (0)
32 #define DELTA_BIT_NEW (1)
33 #define DELTA_BIT_NONE (2)
34 #define DELTA_BIT_RESERVED (3)
36 /* ac3_bit_allocate.c */
37 void bit_allocate (ac3dec_t *);
40 int downmix (ac3dec_t *, float *, s16 *);
43 int exponent_unpack (ac3dec_t *);
46 void imdct (ac3dec_t * p_ac3dec, s16 * buffer);
49 void mantissa_unpack (ac3dec_t *);
52 int parse_bsi (ac3dec_t *);
53 int parse_audblk (ac3dec_t *, int);
54 void parse_auxdata (ac3dec_t *);
57 void rematrix (ac3dec_t *);