source: roaraudio/libroarsndio/volume.c @ 5381:430b1d26e12d

Last change on this file since 5381:430b1d26e12d was 5381:430b1d26e12d, checked in by phi, 12 years ago

updated copyright years

File size: 3.1 KB
Line 
1//volume.c:
2
3/*
4 *      Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2009-2012
5 *  The code (may) include prototypes and comments (and maybe
6 *  other code fragements) from OpenBSD's sndio.
7 *  See 'Copyright for sndio' below for more information on
8 *  code fragments taken from OpenBSD's sndio.
9 *
10 * --- Copyright for sndio ---
11 * Copyright (c) 2008 Alexandre Ratchov <alex@caoua.org>
12 *
13 * Permission to use, copy, modify, and distribute this software for any
14 * purpose with or without fee is hereby granted, provided that the above
15 * copyright notice and this permission notice appear in all copies.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
18 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
19 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
20 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
21 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
22 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
23 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
24 * --- End of Copyright for sndio ---
25 *
26 *  This file is part of libroaresd a part of RoarAudio,
27 *  a cross-platform sound system for both, home and professional use.
28 *  See README for details.
29 *
30 *  This file is free software; you can redistribute it and/or modify
31 *  it under the terms of the GNU General Public License version 3
32 *  as published by the Free Software Foundation.
33 *
34 *  RoarAudio is distributed in the hope that it will be useful,
35 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
36 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
37 *  GNU General Public License for more details.
38 *
39 *  You should have received a copy of the GNU General Public License
40 *  along with this software; see the file COPYING.  If not, write to
41 *  the Free Software Foundation, 51 Franklin Street, Fifth Floor,
42 *  Boston, MA 02110-1301, USA.
43 *
44 *  NOTE for everyone want's to change something and send patches:
45 *  read README and HACKING! There a addition information on
46 *  the license of this document you need to read before you send
47 *  any patches.
48 */
49
50#define ROAR_USE_OWN_SNDIO_HDL
51#include "libroarsndio.h"
52
53int    sio_setvol (struct sio_hdl * hdl, unsigned vol) {
54 struct roar_mixer_settings mixer;
55 unsigned int i;
56
57 if ( hdl == NULL )
58  return 0;
59
60 if ( vol > SIO_MAXVOL )
61  return 0;
62
63 mixer.scale   = SIO_MAXVOL;
64 mixer.rpg_mul = 1;
65 mixer.rpg_div = 1;
66 mixer.mixer[0] = vol;
67
68 if ( roar_set_vol(&(hdl->con), roar_stream_get_id(&(hdl->stream)), &mixer, 0, ROAR_SET_VOL_UNMAPPED) == -1 )
69  return 0;
70
71 for (i = 0; i < hdl->info.channels; i++)
72  mixer.mixer[i] = vol;
73
74 if ( roar_set_vol(&(hdl->con), roar_stream_get_id(&(hdl->stream)), &mixer, hdl->info.channels, ROAR_SET_VOL_ALL) == -1 )
75  return 0;
76
77 if ( hdl->on_vol != NULL )
78  hdl->on_vol(hdl->on_vol_arg, vol);
79
80 return 1;
81}
82
83void   sio_onvol  (struct sio_hdl * hdl, void (*cb)(void * arg, unsigned vol), void * arg) {
84 if ( hdl == NULL )
85  return;
86
87 hdl->on_vol     = cb;
88 hdl->on_vol_arg = arg;
89}
90
91//ll
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