/*

 *  Mixer Interface - local header file

 *  Copyright (c) 2000 by Jaroslav Kysela <perex@perex.cz>

 *  Copyright (c) 2001 by Abramo Bagnara <abramo@alsa-project.org>

 *

 *

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

 *   it under the terms of the GNU Lesser General Public License as

 *   published by the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.

 *

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

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

 *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA

 *

 */

#include "local.h"

typedef struct _bag1 {

	void *ptr;

	struct list_head list;

} bag1_t;

typedef struct list_head bag_t;

int bag_new(bag_t **bag);

void bag_free(bag_t *bag);

int bag_add(bag_t *bag, void *ptr);

int bag_del(bag_t *bag, void *ptr);

int bag_empty(bag_t *bag);

void bag_del_all(bag_t *bag);

typedef struct list_head *bag_iterator_t;

#define bag_iterator_entry(i) (list_entry((i), bag1_t, list)->ptr)

#define bag_for_each(pos, bag) list_for_each(pos, bag)

#define bag_for_each_safe(pos, next, bag) list_for_each_safe(pos, next, bag)

struct _snd_mixer_class {

	struct list_head list;

	snd_mixer_t *mixer;

	snd_mixer_event_t event;

	void *private_data;		

	void (*private_free)(snd_mixer_class_t *class);

	snd_mixer_compare_t compare;

};

struct _snd_mixer_elem {

	snd_mixer_elem_type_t type;

	struct list_head list;		/* links for list of all elems */

	snd_mixer_class_t *class;

	void *private_data;

	void (*private_free)(snd_mixer_elem_t *elem);

	snd_mixer_elem_callback_t callback;

	void *callback_private;

	bag_t helems;

	int compare_weight;		/* compare weight (reversed) */

};

struct _snd_mixer {

	struct list_head slaves;	/* list of all slaves */

	struct list_head classes;	/* list of all elem classes */

	struct list_head elems;		/* list of all elems */

	snd_mixer_elem_t **pelems;	/* array of all elems */

	unsigned int count;

	unsigned int alloc;

	unsigned int events;

	snd_mixer_callback_t callback;

	void *callback_private;

	snd_mixer_compare_t compare;

};

struct _snd_mixer_selem_id {

	char name[60];

	unsigned int index;

};