1 /*****************************************************************************
2 * lpcm_decoder.c: core lpcm decoder
3 *****************************************************************************
4 * Copyright (C) 1999, 2000 VideoLAN
5 * $Id: lpcm_decoder.c,v 1.6 2001/03/21 13:42:34 sam Exp $
7 * Authors: Samuel Hocevar <sam@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 *****************************************************************************/
33 //#include "int_types.h"
34 #include "lpcm_decoder.h"
36 int lpcm_init (lpcmdec_t * p_lpcmdec)
38 intf_DbgMsg( "LPCM Debug: lpmcm init called" );
42 int lpcm_decode_frame (lpcmdec_t * p_lpcmdec, s16 * buffer)
45 * XXX was part of ac3dec, is to change
49 if (parse_bsi (p_ac3dec))
52 for (i = 0; i < 6; i++) {
53 if (parse_audblk (p_ac3dec, i))
55 if (exponent_unpack (p_ac3dec))
57 bit_allocate (p_ac3dec);
58 mantissa_unpack (p_ac3dec);
59 if (p_ac3dec->bsi.acmod == 0x2)
62 downmix (p_ac3dec, buffer);
67 parse_auxdata (p_ac3dec);