merge 19488 back from the 3.1 branch
[kugel-rb.git] / firmware / export / spdif.h
blobf54564ab03fea2101271ae77c931910ce1b12526
1 /***************************************************************************
2 * __________ __ ___.
3 * Open \______ \ ____ ____ | | _\_ |__ _______ ___
4 * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
5 * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
6 * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
7 * \/ \/ \/ \/ \/
8 * $Id$
10 * Copyright (C) 2006 by Michal Sevakis
11 * Based on the work of Thom Johansen
13 * This program is free software; you can redistribute it and/or
14 * modify it under the terms of the GNU General Public License
15 * as published by the Free Software Foundation; either version 2
16 * of the License, or (at your option) any later version.
18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
19 * KIND, either express or implied.
21 ****************************************************************************/
22 #ifndef SPDIF_H
23 #define SPDIF_H
25 #ifdef HAVE_SPDIF_POWER
26 #define IF_SPDIF_POWER_(...) __VA_ARGS__
27 #else
28 #define IF_SPDIF_POWER_(...)
29 #endif
31 /* Initialize the S/PDIF driver */
32 void spdif_init(void);
33 /* Return the S/PDIF frequency in herz - unrounded */
34 unsigned long spdif_measure_frequency(void);
35 #ifdef HAVE_SPDIF_OUT
36 /* Set the S/PDIF audio feed - Use AUDIO_SRC_* values -
37 will be off if not powered or !on */
38 void spdif_set_output_source(int source IF_SPDIF_POWER_(, bool on));
39 /* Return the last set S/PDIF audio source - literally the last value passed
40 to spdif_set_monitor regardless of power state */
41 int spdif_get_output_source(bool *src_on);
42 #endif /* HAVE_SPDIF_OUT */
44 #endif /* SPDIF_H */