mixer.h revision 242435 
1/*-
2 * Copyright (c) 2005-2009 Ariff Abdullah <ariff@FreeBSD.org>
3 * Copyright (c) 1999 Cameron Grant <cg@FreeBSD.org>
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
27 * $FreeBSD: head/sys/dev/sound/pcm/mixer.h 242435 2012-11-01 16:39:01Z hselasky $
28 */
29
30#ifndef _PCM_MIXER_H_
31#define	_PCM_MIXER_H_
32
33struct snd_mixer *mixer_create(device_t dev, kobj_class_t cls, void *devinfo,
34    const char *desc);
35int mixer_delete(struct snd_mixer *m);
36int mixer_init(device_t dev, kobj_class_t cls, void *devinfo);
37int mixer_uninit(device_t dev);
38int mixer_reinit(device_t dev);
39int mixer_ioctl_cmd(struct cdev *i_dev, u_long cmd, caddr_t arg, int mode, struct thread *td, int from);
40int mixer_oss_mixerinfo(struct cdev *i_dev, oss_mixerinfo *mi);
41
42int mixer_hwvol_init(device_t dev);
43void mixer_hwvol_mute(device_t dev);
44void mixer_hwvol_step(device_t dev, int left_step, int right_step);
45
46int mixer_busy(struct snd_mixer *m);
47
48int mix_set(struct snd_mixer *m, u_int dev, u_int left, u_int right);
49int mix_get(struct snd_mixer *m, u_int dev);
50int mix_setrecsrc(struct snd_mixer *m, u_int32_t src);
51u_int32_t mix_getrecsrc(struct snd_mixer *m);
52int mix_get_type(struct snd_mixer *m);
53
54void mix_setdevs(struct snd_mixer *m, u_int32_t v);
55void mix_setrecdevs(struct snd_mixer *m, u_int32_t v);
56u_int32_t mix_getdevs(struct snd_mixer *m);
57u_int32_t mix_getrecdevs(struct snd_mixer *m);
58void mix_setparentchild(struct snd_mixer *m, u_int32_t parent, u_int32_t childs);
59void mix_setrealdev(struct snd_mixer *m, u_int32_t dev, u_int32_t realdev);
60u_int32_t mix_getparent(struct snd_mixer *m, u_int32_t dev);
61u_int32_t mix_getchild(struct snd_mixer *m, u_int32_t dev);
62void *mix_getdevinfo(struct snd_mixer *m);
63struct mtx *mixer_get_lock(struct snd_mixer *m);
64
65extern int mixer_count;
66
67#define MIXER_CMD_DIRECT	0	/* send command within driver   */
68#define MIXER_CMD_CDEV		1	/* send command from cdev/ioctl */
69
70#define MIXER_TYPE_PRIMARY	0	/* mixer_init()   */
71#define MIXER_TYPE_SECONDARY	1	/* mixer_create() */
72
73/*
74 * this is a kludge to allow hiding of the struct snd_mixer definition
75 * 512 should be enough for all architectures
76 */
77#define MIXER_SIZE	(512 + sizeof(struct kobj) +		\
78			    sizeof(oss_mixer_enuminfo))
79
80#define MIXER_DECLARE(name) static DEFINE_CLASS(name, name ## _methods, MIXER_SIZE)
81
82#endif				/* _PCM_MIXER_H_ */
83