1 /*****************************************************************************
2 * spdif.c : dummy mixer for S/PDIF output (1 input only)
3 *****************************************************************************
4 * Copyright (C) 2002 VideoLAN
5 * $Id: spdif.c,v 1.2 2002/08/12 07:40:23 massiot Exp $
7 * Authors: Christophe Massiot <massiot@via.ecp.fr>
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 /*****************************************************************************
26 *****************************************************************************/
28 #include <stdlib.h> /* malloc(), free() */
32 #include "audio_output.h"
33 #include "aout_internal.h"
35 /*****************************************************************************
37 *****************************************************************************/
38 static int Create ( vlc_object_t * );
40 static void DoWork ( aout_instance_t *, aout_buffer_t * );
42 /*****************************************************************************
44 *****************************************************************************/
46 set_description( _("dummy spdif audio mixer module") );
47 set_capability( "audio mixer", 1 );
48 add_shortcut( "spdif" );
49 set_callbacks( Create, NULL );
52 /*****************************************************************************
53 * Create: allocate spdif mixer
54 *****************************************************************************/
55 static int Create( vlc_object_t *p_this )
57 aout_instance_t * p_aout = (aout_instance_t *)p_this;
59 if ( p_aout->mixer.output.i_format != AOUT_FMT_SPDIF )
64 p_aout->mixer.pf_do_work = DoWork;
65 /* This is a bit kludgy - do not ask for a new buffer, since the one
66 * provided by the first input will be good enough. */
67 p_aout->mixer.output_alloc.i_alloc_type = AOUT_ALLOC_NONE;
72 /*****************************************************************************
73 * DoWork: mix a new output buffer - this does nothing, indeed
74 *****************************************************************************/
75 static void DoWork( aout_instance_t * p_aout, aout_buffer_t * p_buffer )
77 aout_input_t * p_input = p_aout->pp_inputs[0];
78 aout_FifoPop( p_aout, &p_input->fifo );