3 * Copyright (C) 2000-2002 Michel Lespinasse <walken@zoy.org>
4 * Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
6 * This file is part of a52dec, a free ATSC A-52 stream decoder.
7 * See http://liba52.sourceforge.net/ for updates.
9 * a52dec 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 * a52dec 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 02111-1307 USA
29 #include "audio_out.h"
31 typedef struct null_instance_s {
36 int null_setup (ao_instance_t * _instance, int sample_rate, int * flags,
37 sample_t * level, sample_t * bias)
39 null_instance_t * instance = (null_instance_t *) _instance;
41 *flags = instance->channels;
48 int null_play (ao_instance_t * instance, int flags, sample_t * samples)
53 void null_close (ao_instance_t * instance)
57 static null_instance_t instance = {{null_setup, null_play, null_close}, 0};
59 ao_instance_t * ao_null_open (void)
61 instance.channels = A52_STEREO;
63 return (ao_instance_t *) &instance;
66 ao_instance_t * ao_null4_open (void)
68 instance.channels = A52_2F2R;
70 return (ao_instance_t *) &instance;
73 ao_instance_t * ao_null6_open (void)
75 instance.channels = A52_3F2R | A52_LFE;
77 return (ao_instance_t *) &instance;