Edit File: mixer_oss.h
#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 IS_ENABLED(CONFIG_SND_MIXER_OSS) #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 */