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awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/include/sound/mixer_oss.h
10820 views
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#ifndef __SOUND_MIXER_OSS_H

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#define __SOUND_MIXER_OSS_H

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/*

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 *  OSS MIXER API

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 *  Copyright (c) by Jaroslav Kysela <[email protected]>

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 *

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 *

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 *   This program is free software; you can redistribute it and/or modify

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 *   it under the terms of the GNU General Public License as published by

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 *   the Free Software Foundation; either version 2 of the License, or

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 *   (at your option) any later version.

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 *

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 *   This program is distributed in the hope that it will be useful,

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 *   but WITHOUT ANY WARRANTY; without even the implied warranty of

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 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

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 *   GNU General Public License for more details.

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 *

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 *   You should have received a copy of the GNU General Public License

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 *   along with this program; if not, write to the Free Software

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 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA

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 *

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 */

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#if defined(CONFIG_SND_MIXER_OSS) || defined(CONFIG_SND_MIXER_OSS_MODULE)

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#define SNDRV_OSS_MAX_MIXERS	32

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struct snd_mixer_oss_file;

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struct snd_mixer_oss_slot {

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	int number;

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	unsigned int stereo: 1;

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	int (*get_volume)(struct snd_mixer_oss_file *fmixer,

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			  struct snd_mixer_oss_slot *chn,

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			  int *left, int *right);

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	int (*put_volume)(struct snd_mixer_oss_file *fmixer,

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			  struct snd_mixer_oss_slot *chn,

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			  int left, int right);

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	int (*get_recsrc)(struct snd_mixer_oss_file *fmixer,

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			  struct snd_mixer_oss_slot *chn,

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			  int *active);

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	int (*put_recsrc)(struct snd_mixer_oss_file *fmixer,

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			  struct snd_mixer_oss_slot *chn,

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			  int active);

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	unsigned long private_value;

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	void *private_data;

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	void (*private_free)(struct snd_mixer_oss_slot *slot);

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	int volume[2];

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};

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struct snd_mixer_oss {

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	struct snd_card *card;

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	char id[16];

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	char name[32];

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	struct snd_mixer_oss_slot slots[SNDRV_OSS_MAX_MIXERS]; /* OSS mixer slots */

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	unsigned int mask_recsrc;		/* exclusive recsrc mask */

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	int (*get_recsrc)(struct snd_mixer_oss_file *fmixer,

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			  unsigned int *active_index);

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	int (*put_recsrc)(struct snd_mixer_oss_file *fmixer,

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			  unsigned int active_index);

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	void *private_data_recsrc;

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	void (*private_free_recsrc)(struct snd_mixer_oss *mixer);

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	struct mutex reg_mutex;

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	struct snd_info_entry *proc_entry;

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	int oss_dev_alloc;

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	/* --- */

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	int oss_recsrc;

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};

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struct snd_mixer_oss_file {

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	struct snd_card *card;

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	struct snd_mixer_oss *mixer;

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};

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int snd_mixer_oss_ioctl_card(struct snd_card *card,

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			     unsigned int cmd, unsigned long arg);

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#endif /* CONFIG_SND_MIXER_OSS */

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#endif /* __SOUND_MIXER_OSS_H */

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