release/src-rt-6.x.4708/linux/linux-2.6.36/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
  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 #endif /* CONFIG_SND_MIXER_OSS */
  77
  78 #endif /* __SOUND_MIXER_OSS_H */