| 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */
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| 2 | #ifndef __SOUND_MIXER_OSS_H
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| 3 | #define __SOUND_MIXER_OSS_H
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| 4 |
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| 5 | /*
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| 6 | * OSS MIXER API
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| 7 | * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
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| 8 | */
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| 9 |
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| 10 | #if IS_ENABLED(CONFIG_SND_MIXER_OSS)
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| 11 |
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| 12 | #define SNDRV_OSS_MAX_MIXERS 32
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| 13 |
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| 14 | struct snd_mixer_oss_file;
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| 15 |
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| 16 | struct snd_mixer_oss_slot {
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| 17 | int number;
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| 18 | unsigned int stereo: 1;
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| 19 | int (*get_volume)(struct snd_mixer_oss_file *fmixer,
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| 20 | struct snd_mixer_oss_slot *chn,
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| 21 | int *left, int *right);
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| 22 | int (*put_volume)(struct snd_mixer_oss_file *fmixer,
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| 23 | struct snd_mixer_oss_slot *chn,
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| 24 | int left, int right);
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| 25 | int (*get_recsrc)(struct snd_mixer_oss_file *fmixer,
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| 26 | struct snd_mixer_oss_slot *chn,
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| 27 | int *active);
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| 28 | int (*put_recsrc)(struct snd_mixer_oss_file *fmixer,
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| 29 | struct snd_mixer_oss_slot *chn,
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| 30 | int active);
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| 31 | unsigned long private_value;
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| 32 | void *private_data;
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| 33 | void (*private_free)(struct snd_mixer_oss_slot *slot);
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| 34 | int volume[2];
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| 35 | };
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| 36 |
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| 37 | struct snd_mixer_oss {
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| 38 | struct snd_card *card;
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| 39 | char id[16];
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| 40 | char name[32];
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| 41 | struct snd_mixer_oss_slot slots[SNDRV_OSS_MAX_MIXERS]; /* OSS mixer slots */
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| 42 | unsigned int mask_recsrc; /* exclusive recsrc mask */
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| 43 | int (*get_recsrc)(struct snd_mixer_oss_file *fmixer,
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| 44 | unsigned int *active_index);
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| 45 | int (*put_recsrc)(struct snd_mixer_oss_file *fmixer,
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| 46 | unsigned int active_index);
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| 47 | void *private_data_recsrc;
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| 48 | void (*private_free_recsrc)(struct snd_mixer_oss *mixer);
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| 49 | struct mutex reg_mutex;
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| 50 | struct snd_info_entry *proc_entry;
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| 51 | int oss_dev_alloc;
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| 52 | /* --- */
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| 53 | int oss_recsrc;
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| 54 | };
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| 55 |
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| 56 | struct snd_mixer_oss_file {
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| 57 | struct snd_card *card;
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| 58 | struct snd_mixer_oss *mixer;
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| 59 | };
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| 60 |
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| 61 | int snd_mixer_oss_ioctl_card(struct snd_card *card,
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| 62 | unsigned int cmd, unsigned long arg);
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| 63 |
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| 64 | #endif /* CONFIG_SND_MIXER_OSS */
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| 65 |
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| 66 | #endif /* __SOUND_MIXER_OSS_H */
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