/* *  Mixer Interface - simple abstact module - base library *  Copyright (c) 2005 by Jaroslav Kysela <perex@suse.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., 59 Temple Place, Suite 330, Boston, MA  02111-1307 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		4struct 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	2struct 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 */