/*

 *  Mixer Interface - simple abstact module - base library

 *  Copyright (c) 2005 by Jaroslav Kysela <perex@perex.cz>

 *

 *

 *   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

 *

 */

#ifndef __SMIXER_BASE_H

#include "list.h"

#define MAX_CHANNEL	6

#define SID_MASTER	0

#define SID_HEADPHONE	1

#define SID_FRONT	2

#define SID_PCM		3

#define SID_CD		4

struct melem_sids {

	unsigned short sid;

	const char *sname;

	unsigned short sindex;

	unsigned short weight;

	unsigned int chanmap[2];

	struct sm_elem_ops *sops;

};

#define PURPOSE_VOLUME		0

#define PURPOSE_SWITCH		1

#define PURPOSE_ENUMLIST	2

struct helem_selector {

	snd_ctl_elem_iface_t iface;

	const char *name;

	unsigned short index;

	unsigned short sid;

	unsigned short purpose;

	unsigned short caps;

};

struct helem_base {

	struct list_head list;

	snd_hctl_elem_t *helem;

	unsigned short purpose;

	unsigned int caps;

	unsigned int inactive: 1;

	long min, max;

	unsigned int count;

};

struct selem_base {

	sm_selem_t selem;

	struct list_head helems;

	unsigned short sid;

	struct {

		unsigned int chanmap;

		unsigned int forced_range: 1;

		long min, max;

		long vol[MAX_CHANNEL];

	} dir[2];

};

struct bclass_selector {

	struct list_head list;

	struct helem_selector *selectors;

	unsigned int count;

};

struct bclass_sid {

	struct list_head list;

	struct melem_sids *sids;

	unsigned int count;

};

typedef struct bclass_base_ops {

	int (*event)(snd_mixer_class_t *class, unsigned int mask,

		     snd_hctl_elem_t *helem, snd_mixer_elem_t *melem);

	int (*selreg)(snd_mixer_class_t *class,

		      struct helem_selector *selectors,

		      unsigned int count);

	int (*sidreg)(snd_mixer_class_t *class,

		      struct melem_sids *sids,

		      unsigned int count);

} bclass_base_ops_t;

struct bclass_private {

	struct list_head selectors;

	struct list_head sids;

	void *dl_sbase;

	bclass_base_ops_t ops;

};

int mixer_simple_basic_dlopen(snd_mixer_class_t *class,

			      bclass_base_ops_t **ops);

#endif /* __SMIXER_BASE_H */