192 строки
6.9 KiB
C
192 строки
6.9 KiB
C
#ifndef __SOUND_INFO_H
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#define __SOUND_INFO_H
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/*
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* Header file for info interface
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* Copyright (c) by Jaroslav Kysela <perex@suse.cz>
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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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#include <linux/poll.h>
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/* buffer for information */
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struct snd_info_buffer {
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char *buffer; /* pointer to begin of buffer */
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unsigned int curr; /* current position in buffer */
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unsigned int size; /* current size */
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unsigned int len; /* total length of buffer */
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int stop; /* stop flag */
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int error; /* error code */
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};
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#define SNDRV_INFO_CONTENT_TEXT 0
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#define SNDRV_INFO_CONTENT_DATA 1
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struct snd_info_entry;
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struct snd_info_entry_text {
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void (*read) (struct snd_info_entry *entry, struct snd_info_buffer *buffer);
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void (*write) (struct snd_info_entry *entry, struct snd_info_buffer *buffer);
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};
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struct snd_info_entry_ops {
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int (*open) (struct snd_info_entry *entry,
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unsigned short mode, void **file_private_data);
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int (*release) (struct snd_info_entry * entry,
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unsigned short mode, void *file_private_data);
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long (*read) (struct snd_info_entry *entry, void *file_private_data,
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struct file * file, char __user *buf,
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unsigned long count, unsigned long pos);
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long (*write) (struct snd_info_entry *entry, void *file_private_data,
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struct file * file, const char __user *buf,
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unsigned long count, unsigned long pos);
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long long (*llseek) (struct snd_info_entry *entry, void *file_private_data,
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struct file * file, long long offset, int orig);
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unsigned int (*poll) (struct snd_info_entry *entry, void *file_private_data,
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struct file * file, poll_table * wait);
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int (*ioctl) (struct snd_info_entry *entry, void *file_private_data,
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struct file * file, unsigned int cmd, unsigned long arg);
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int (*mmap) (struct snd_info_entry *entry, void *file_private_data,
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struct inode * inode, struct file * file,
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struct vm_area_struct * vma);
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};
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struct snd_info_entry {
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const char *name;
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mode_t mode;
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long size;
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unsigned short content;
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unsigned short disconnected: 1;
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union {
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struct snd_info_entry_text text;
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struct snd_info_entry_ops *ops;
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} c;
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struct snd_info_entry *parent;
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struct snd_card *card;
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struct module *module;
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void *private_data;
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void (*private_free)(struct snd_info_entry *entry);
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struct proc_dir_entry *p;
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struct mutex access;
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};
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#if defined(CONFIG_SND_OSSEMUL) && defined(CONFIG_PROC_FS)
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int snd_info_minor_register(void);
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int snd_info_minor_unregister(void);
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#else
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#define snd_info_minor_register() /* NOP */
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#define snd_info_minor_unregister() /* NOP */
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#endif
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#ifdef CONFIG_PROC_FS
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extern struct snd_info_entry *snd_seq_root;
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#ifdef CONFIG_SND_OSSEMUL
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extern struct snd_info_entry *snd_oss_root;
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#else
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#define snd_oss_root NULL
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#endif
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int snd_iprintf(struct snd_info_buffer * buffer, char *fmt,...) __attribute__ ((format (printf, 2, 3)));
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int snd_info_init(void);
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int snd_info_done(void);
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int snd_info_get_line(struct snd_info_buffer * buffer, char *line, int len);
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char *snd_info_get_str(char *dest, char *src, int len);
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struct snd_info_entry *snd_info_create_module_entry(struct module * module,
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const char *name,
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struct snd_info_entry * parent);
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struct snd_info_entry *snd_info_create_card_entry(struct snd_card * card,
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const char *name,
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struct snd_info_entry * parent);
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void snd_info_free_entry(struct snd_info_entry * entry);
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int snd_info_store_text(struct snd_info_entry * entry);
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int snd_info_restore_text(struct snd_info_entry * entry);
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int snd_info_card_create(struct snd_card * card);
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int snd_info_card_register(struct snd_card * card);
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int snd_info_card_free(struct snd_card * card);
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int snd_info_register(struct snd_info_entry * entry);
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int snd_info_unregister(struct snd_info_entry * entry);
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/* for card drivers */
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int snd_card_proc_new(struct snd_card *card, const char *name, struct snd_info_entry **entryp);
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static inline void snd_info_set_text_ops(struct snd_info_entry *entry,
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void *private_data,
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void (*read)(struct snd_info_entry *, struct snd_info_buffer *))
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{
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entry->private_data = private_data;
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entry->c.text.read = read;
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}
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int snd_info_check_reserved_words(const char *str);
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#else
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#define snd_seq_root NULL
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#define snd_oss_root NULL
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static inline int snd_iprintf(struct snd_info_buffer * buffer, char *fmt,...) { return 0; }
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static inline int snd_info_init(void) { return 0; }
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static inline int snd_info_done(void) { return 0; }
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static inline int snd_info_get_line(struct snd_info_buffer * buffer, char *line, int len) { return 0; }
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static inline char *snd_info_get_str(char *dest, char *src, int len) { return NULL; }
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static inline struct snd_info_entry *snd_info_create_module_entry(struct module * module, const char *name, struct snd_info_entry * parent) { return NULL; }
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static inline struct snd_info_entry *snd_info_create_card_entry(struct snd_card * card, const char *name, struct snd_info_entry * parent) { return NULL; }
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static inline void snd_info_free_entry(struct snd_info_entry * entry) { ; }
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static inline int snd_info_card_create(struct snd_card * card) { return 0; }
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static inline int snd_info_card_register(struct snd_card * card) { return 0; }
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static inline int snd_info_card_free(struct snd_card * card) { return 0; }
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static inline int snd_info_register(struct snd_info_entry * entry) { return 0; }
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static inline int snd_info_unregister(struct snd_info_entry * entry) { return 0; }
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static inline int snd_card_proc_new(struct snd_card *card, const char *name,
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struct snd_info_entry **entryp) { return -EINVAL; }
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static inline void snd_info_set_text_ops(struct snd_info_entry *entry __attribute__((unused)),
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void *private_data,
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void (*read)(struct snd_info_entry *, struct snd_info_buffer *)) {}
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static inline int snd_info_check_reserved_words(const char *str) { return 1; }
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#endif
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/*
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* OSS info part
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*/
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#if defined(CONFIG_SND_OSSEMUL) && defined(CONFIG_PROC_FS)
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#define SNDRV_OSS_INFO_DEV_AUDIO 0
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#define SNDRV_OSS_INFO_DEV_SYNTH 1
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#define SNDRV_OSS_INFO_DEV_MIDI 2
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#define SNDRV_OSS_INFO_DEV_TIMERS 4
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#define SNDRV_OSS_INFO_DEV_MIXERS 5
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#define SNDRV_OSS_INFO_DEV_COUNT 6
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int snd_oss_info_register(int dev, int num, char *string);
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#define snd_oss_info_unregister(dev, num) snd_oss_info_register(dev, num, NULL)
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#endif /* CONFIG_SND_OSSEMUL && CONFIG_PROC_FS */
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#endif /* __SOUND_INFO_H */
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