#ifndef __SOUND_MIXER_OSS_H
  #define __SOUND_MIXER_OSS_H
  
  /*
   *  OSS MIXER API

   *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>

   *
   *
   *   This program is free software; you can redistribute it and/or modify
   *   it under the terms of the GNU General Public License as published by
   *   the Free Software Foundation; either version 2 of the License, or
   *   (at your option) any later version.
   *
   *   This program is distributed in the hope that it will be useful,
   *   but WITHOUT ANY WARRANTY; without even the implied warranty of
   *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   *   GNU General Public License for more details.
   *
   *   You should have received a copy of the GNU General Public License
   *   along with this program; if not, write to the Free Software
   *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
   *
   */
  
  #if defined(CONFIG_SND_MIXER_OSS) || defined(CONFIG_SND_MIXER_OSS_MODULE)

  #define SNDRV_OSS_MAX_MIXERS	32

  struct snd_mixer_oss_file;
  
  struct snd_mixer_oss_slot {

  	int number;
  	unsigned int stereo: 1;

  	int (*get_volume)(struct snd_mixer_oss_file *fmixer,
  			  struct snd_mixer_oss_slot *chn,
  			  int *left, int *right);
  	int (*put_volume)(struct snd_mixer_oss_file *fmixer,
  			  struct snd_mixer_oss_slot *chn,
  			  int left, int right);
  	int (*get_recsrc)(struct snd_mixer_oss_file *fmixer,
  			  struct snd_mixer_oss_slot *chn,
  			  int *active);
  	int (*put_recsrc)(struct snd_mixer_oss_file *fmixer,
  			  struct snd_mixer_oss_slot *chn,
  			  int active);

  	unsigned long private_value;
  	void *private_data;

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

  	int volume[2];
  };

  struct snd_mixer_oss {
  	struct snd_card *card;

  	char id[16];
  	char name[32];

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

  	unsigned int mask_recsrc;		/* exclusive recsrc mask */

  	int (*get_recsrc)(struct snd_mixer_oss_file *fmixer,
  			  unsigned int *active_index);
  	int (*put_recsrc)(struct snd_mixer_oss_file *fmixer,
  			  unsigned int active_index);

  	void *private_data_recsrc;

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

  	struct mutex reg_mutex;

  	struct snd_info_entry *proc_entry;

  	int oss_dev_alloc;
  	/* --- */
  	int oss_recsrc;
  };

  struct snd_mixer_oss_file {
  	struct snd_card *card;
  	struct snd_mixer_oss *mixer;

  };

  int snd_mixer_oss_ioctl_card(struct snd_card *card,
  			     unsigned int cmd, unsigned long arg);

  #endif /* CONFIG_SND_MIXER_OSS */
  
  #endif /* __SOUND_MIXER_OSS_H */