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 IS_ENABLED(CONFIG_SND_MIXER_OSS)
26 
27 #define SNDRV_OSS_MAX_MIXERS	32
28 
29 struct snd_mixer_oss_file;
30 
31 struct 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 
52 struct 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 
71 struct snd_mixer_oss_file {
72 	struct snd_card *card;
73 	struct snd_mixer_oss *mixer;
74 };
75 
76 int 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