mixer.h revision 170815 
1/*-
2 * Copyright (c) 1999 Cameron Grant <cg@freebsd.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: head/sys/dev/sound/pcm/mixer.h 170815 2007-06-16 03:37:28Z ariff $
27 */
28
29struct snd_mixer *mixer_create(device_t dev, kobj_class_t cls, void *devinfo,
30    const char *desc);
31int mixer_delete(struct snd_mixer *m);
32int mixer_init(device_t dev, kobj_class_t cls, void *devinfo);
33int mixer_uninit(device_t dev);
34int mixer_reinit(device_t dev);
35int mixer_ioctl_cmd(struct cdev *i_dev, u_long cmd, caddr_t arg, int mode, struct thread *td, int from);
36int mixer_oss_mixerinfo(struct cdev *i_dev, oss_mixerinfo *mi);
37
38int mixer_hwvol_init(device_t dev);
39void mixer_hwvol_mute(device_t dev);
40void mixer_hwvol_step(device_t dev, int left_step, int right_step);
41
42int mixer_busy(struct snd_mixer *m);
43
44int mix_set(struct snd_mixer *m, u_int dev, u_int left, u_int right);
45int mix_get(struct snd_mixer *m, u_int dev);
46int mix_setrecsrc(struct snd_mixer *m, u_int32_t src);
47u_int32_t mix_getrecsrc(struct snd_mixer *m);
48int mix_get_type(struct snd_mixer *m);
49
50void mix_setdevs(struct snd_mixer *m, u_int32_t v);
51void mix_setrecdevs(struct snd_mixer *m, u_int32_t v);
52u_int32_t mix_getdevs(struct snd_mixer *m);
53u_int32_t mix_getrecdevs(struct snd_mixer *m);
54void mix_setparentchild(struct snd_mixer *m, u_int32_t parent, u_int32_t childs);
55void mix_setrealdev(struct snd_mixer *m, u_int32_t dev, u_int32_t realdev);
56u_int32_t mix_getparent(struct snd_mixer *m, u_int32_t dev);
57u_int32_t mix_getchild(struct snd_mixer *m, u_int32_t dev);
58void *mix_getdevinfo(struct snd_mixer *m);
59
60extern int mixer_count;
61
62#define MIXER_CMD_DIRECT	0	/* send command within driver   */
63#define MIXER_CMD_CDEV		1	/* send command from cdev/ioctl */
64
65#define MIXER_TYPE_PRIMARY	0	/* mixer_init()   */
66#define MIXER_TYPE_SECONDARY	1	/* mixer_create() */
67
68/*
69 * this is a kludge to allow hiding of the struct snd_mixer definition
70 * 512 should be enough for all architectures
71 */
72#define MIXER_SIZE	(512 + sizeof(struct kobj) +		\
73			    sizeof(oss_mixer_enuminfo))
74
75#define MIXER_DECLARE(name) static DEFINE_CLASS(name, name ## _methods, MIXER_SIZE)
76