Root/include/sound/mixer_oss.h

1#ifndef __SOUND_MIXER_OSS_H
2#define __SOUND_MIXER_OSS_H
3
4/*
5 * OSS MIXER API
6 * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
7 *
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 *
23 */
24
25#if defined(CONFIG_SND_MIXER_OSS) || defined(CONFIG_SND_MIXER_OSS_MODULE)
26
27#define SNDRV_OSS_MAX_MIXERS 32
28
29struct snd_mixer_oss_file;
30
31struct snd_mixer_oss_slot {
32    int number;
33    unsigned int stereo: 1;
34    int (*get_volume)(struct snd_mixer_oss_file *fmixer,
35              struct snd_mixer_oss_slot *chn,
36              int *left, int *right);
37    int (*put_volume)(struct snd_mixer_oss_file *fmixer,
38              struct snd_mixer_oss_slot *chn,
39              int left, int right);
40    int (*get_recsrc)(struct snd_mixer_oss_file *fmixer,
41              struct snd_mixer_oss_slot *chn,
42              int *active);
43    int (*put_recsrc)(struct snd_mixer_oss_file *fmixer,
44              struct snd_mixer_oss_slot *chn,
45              int active);
46    unsigned long private_value;
47    void *private_data;
48    void (*private_free)(struct snd_mixer_oss_slot *slot);
49    int volume[2];
50};
51
52struct snd_mixer_oss {
53    struct snd_card *card;
54    char id[16];
55    char name[32];
56    struct snd_mixer_oss_slot slots[SNDRV_OSS_MAX_MIXERS]; /* OSS mixer slots */
57    unsigned int mask_recsrc; /* exclusive recsrc mask */
58    int (*get_recsrc)(struct snd_mixer_oss_file *fmixer,
59              unsigned int *active_index);
60    int (*put_recsrc)(struct snd_mixer_oss_file *fmixer,
61              unsigned int active_index);
62    void *private_data_recsrc;
63    void (*private_free_recsrc)(struct snd_mixer_oss *mixer);
64    struct mutex reg_mutex;
65    struct snd_info_entry *proc_entry;
66    int oss_dev_alloc;
67    /* --- */
68    int oss_recsrc;
69};
70
71struct snd_mixer_oss_file {
72    struct snd_card *card;
73    struct snd_mixer_oss *mixer;
74};
75
76int snd_mixer_oss_ioctl_card(struct snd_card *card,
77                 unsigned int cmd, unsigned long arg);
78
79#endif /* CONFIG_SND_MIXER_OSS */
80
81#endif /* __SOUND_MIXER_OSS_H */
82

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