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111 lines
2.6 KiB
C
111 lines
2.6 KiB
C
/*
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* Mixer Interface - simple abstact module - base library
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* Copyright (c) 2005 by Jaroslav Kysela <perex@perex.cz>
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*
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*
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* This library is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation; either version 2.1 of
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* the License, or (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 Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#ifndef __SMIXER_BASE_H
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#include "list.h"
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#define MAX_CHANNEL 6
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#define SID_MASTER 0
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#define SID_HEADPHONE 1
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#define SID_FRONT 2
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#define SID_PCM 3
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#define SID_CD 4
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struct melem_sids {
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unsigned short sid;
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const char *sname;
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unsigned short sindex;
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unsigned short weight;
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unsigned int chanmap[2];
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struct sm_elem_ops *sops;
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};
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#define PURPOSE_VOLUME 0
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#define PURPOSE_SWITCH 1
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#define PURPOSE_ENUMLIST 2
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struct helem_selector {
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snd_ctl_elem_iface_t iface;
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const char *name;
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unsigned short index;
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unsigned short sid;
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unsigned short purpose;
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unsigned short caps;
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};
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struct helem_base {
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struct list_head list;
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snd_hctl_elem_t *helem;
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unsigned short purpose;
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unsigned int caps;
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unsigned int inactive: 1;
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long min, max;
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unsigned int count;
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};
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struct selem_base {
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sm_selem_t selem;
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struct list_head helems;
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unsigned short sid;
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struct {
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unsigned int chanmap;
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unsigned int forced_range: 1;
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long min, max;
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long vol[MAX_CHANNEL];
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} dir[2];
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};
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struct bclass_selector {
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struct list_head list;
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struct helem_selector *selectors;
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unsigned int count;
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};
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struct bclass_sid {
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struct list_head list;
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struct melem_sids *sids;
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unsigned int count;
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};
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typedef struct bclass_base_ops {
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int (*event)(snd_mixer_class_t *class, unsigned int mask,
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snd_hctl_elem_t *helem, snd_mixer_elem_t *melem);
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int (*selreg)(snd_mixer_class_t *class,
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struct helem_selector *selectors,
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unsigned int count);
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int (*sidreg)(snd_mixer_class_t *class,
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struct melem_sids *sids,
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unsigned int count);
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} bclass_base_ops_t;
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struct bclass_private {
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struct list_head selectors;
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struct list_head sids;
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void *dl_sbase;
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bclass_base_ops_t ops;
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};
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int mixer_simple_basic_dlopen(snd_mixer_class_t *class,
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bclass_base_ops_t **ops);
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#endif /* __SMIXER_BASE_H */
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