mixer.h revision 193640 
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 193640 2009-06-07 19:12:08Z ariff $
28 */
29
30struct snd_mixer *mixer_create(device_t dev, kobj_class_t cls, void *devinfo,
31    const char *desc);
32int mixer_delete(struct snd_mixer *m);
33int mixer_init(device_t dev, kobj_class_t cls, void *devinfo);
34int mixer_uninit(device_t dev);
35int mixer_reinit(device_t dev);
36int mixer_ioctl_cmd(struct cdev *i_dev, u_long cmd, caddr_t arg, int mode, struct thread *td, int from);
37int mixer_oss_mixerinfo(struct cdev *i_dev, oss_mixerinfo *mi);
38
39int mixer_hwvol_init(device_t dev);
40void mixer_hwvol_mute(device_t dev);
41void mixer_hwvol_step(device_t dev, int left_step, int right_step);
42
43int mixer_busy(struct snd_mixer *m);
44
45int mix_set(struct snd_mixer *m, u_int dev, u_int left, u_int right);
46int mix_get(struct snd_mixer *m, u_int dev);
47int mix_setrecsrc(struct snd_mixer *m, u_int32_t src);
48u_int32_t mix_getrecsrc(struct snd_mixer *m);
49int mix_get_type(struct snd_mixer *m);
50
51void mix_setdevs(struct snd_mixer *m, u_int32_t v);
52void mix_setrecdevs(struct snd_mixer *m, u_int32_t v);
53u_int32_t mix_getdevs(struct snd_mixer *m);
54u_int32_t mix_getrecdevs(struct snd_mixer *m);
55void mix_setparentchild(struct snd_mixer *m, u_int32_t parent, u_int32_t childs);
56void mix_setrealdev(struct snd_mixer *m, u_int32_t dev, u_int32_t realdev);
57u_int32_t mix_getparent(struct snd_mixer *m, u_int32_t dev);
58u_int32_t mix_getchild(struct snd_mixer *m, u_int32_t dev);
59void *mix_getdevinfo(struct snd_mixer *m);
60struct mtx *mixer_get_lock(struct snd_mixer *m);
61
62extern int mixer_count;
63
64#define MIXER_CMD_DIRECT	0	/* send command within driver   */
65#define MIXER_CMD_CDEV		1	/* send command from cdev/ioctl */
66
67#define MIXER_TYPE_PRIMARY	0	/* mixer_init()   */
68#define MIXER_TYPE_SECONDARY	1	/* mixer_create() */
69
70/*
71 * this is a kludge to allow hiding of the struct snd_mixer definition
72 * 512 should be enough for all architectures
73 */
74#define MIXER_SIZE	(512 + sizeof(struct kobj) +		\
75			    sizeof(oss_mixer_enuminfo))
76
77#ifdef SND_DEBUG
78#define MIXER_DECLARE(mixer)						\
79	static struct kobj_class mixer##_class = {			\
80		.name        = #mixer,					\
81		.methods     = mixer##_methods,				\
82		.size        = MIXER_SIZE,				\
83		.baseclasses = NULL,					\
84		.refs        = 0					\
85	}
86#else
87#define MIXER_DECLARE(name) static DEFINE_CLASS(name, name ## _methods, MIXER_SIZE)
88#endif
89