1/*
2 *  Mixer Interface - simple abstact module - base library
3 *  Copyright (c) 2005 by Jaroslav Kysela <perex@perex.cz>
4 *
5 *
6 *   This library is free software; you can redistribute it and/or modify
7 *   it under the terms of the GNU Lesser General Public License as
8 *   published by the Free Software Foundation; either version 2.1 of
9 *   the License, or (at your option) any later version.
10 *
11 *   This program is distributed in the hope that it will be useful,
12 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
13 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14 *   GNU Lesser General Public License for more details.
15 *
16 *   You should have received a copy of the GNU Lesser General Public
17 *   License along with this library; if not, write to the Free Software
18 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
19 *
20 */
21
22#ifndef __SMIXER_BASE_H
23
24#include "list.h"
25
26#define MAX_CHANNEL	6
27
28#define SID_MASTER	0
29#define SID_HEADPHONE	1
30#define SID_FRONT	2
31#define SID_PCM		3
32#define SID_CD		4
33
34struct melem_sids {
35	unsigned short sid;
36	const char *sname;
37	unsigned short sindex;
38	unsigned short weight;
39	unsigned int chanmap[2];
40	struct sm_elem_ops *sops;
41};
42
43#define PURPOSE_VOLUME		0
44#define PURPOSE_SWITCH		1
45#define PURPOSE_ENUMLIST	2
46
47struct helem_selector {
48	snd_ctl_elem_iface_t iface;
49	const char *name;
50	unsigned short index;
51	unsigned short sid;
52	unsigned short purpose;
53	unsigned short caps;
54};
55
56struct helem_base {
57	struct list_head list;
58	snd_hctl_elem_t *helem;
59	unsigned short purpose;
60	unsigned int caps;
61	unsigned int inactive: 1;
62	long min, max;
63	unsigned int count;
64};
65
66struct selem_base {
67	sm_selem_t selem;
68	struct list_head helems;
69	unsigned short sid;
70	struct {
71		unsigned int chanmap;
72		unsigned int forced_range: 1;
73		long min, max;
74		long vol[MAX_CHANNEL];
75	} dir[2];
76};
77
78struct bclass_selector {
79	struct list_head list;
80	struct helem_selector *selectors;
81	unsigned int count;
82};
83
84struct bclass_sid {
85	struct list_head list;
86	struct melem_sids *sids;
87	unsigned int count;
88};
89
90typedef struct bclass_base_ops {
91	int (*event)(snd_mixer_class_t *class, unsigned int mask,
92		     snd_hctl_elem_t *helem, snd_mixer_elem_t *melem);
93	int (*selreg)(snd_mixer_class_t *class,
94		      struct helem_selector *selectors,
95		      unsigned int count);
96	int (*sidreg)(snd_mixer_class_t *class,
97		      struct melem_sids *sids,
98		      unsigned int count);
99} bclass_base_ops_t;
100
101struct bclass_private {
102	struct list_head selectors;
103	struct list_head sids;
104	void *dl_sbase;
105	bclass_base_ops_t ops;
106};
107
108int mixer_simple_basic_dlopen(snd_mixer_class_t *class,
109			      bclass_base_ops_t **ops);
110
111#endif /* __SMIXER_BASE_H */
112