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https://github.com/alsa-project/alsa-lib.git
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a33c78ddd8
Compile dynamic modules outside the alsa-lib tree to allow linking them against libasound.so - proper versions of dynamic symbols.
89 lines
2.3 KiB
C
89 lines
2.3 KiB
C
/*
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* Mixer Interface - AC97 simple abstact module
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* Copyright (c) 2005 by Jaroslav Kysela <perex@suse.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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <fcntl.h>
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#include <sys/ioctl.h>
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#include <math.h>
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#include "asoundlib.h"
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#include "mixer_abst.h"
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#include "sbase.h"
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static struct sm_elem_ops simple_ac97_ops;
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struct melem_sids sids[] = {
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{
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.sid = SID_MASTER,
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.sname = "Master",
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.sindex = 0,
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.weight = 1,
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.chanmap = { 3, 0 },
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.sops = &simple_ac97_ops,
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}
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};
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#define SELECTORS (sizeof(selectors)/sizeof(selectors[0]))
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struct helem_selector selectors[] = {
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{
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.iface = SND_CTL_ELEM_IFACE_MIXER,
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.name = "Master Playback Volume",
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.index = 0,
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.sid = SID_MASTER,
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.purpose = PURPOSE_VOLUME,
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.caps = SM_CAP_PVOLUME,
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},
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{
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.iface = SND_CTL_ELEM_IFACE_MIXER,
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.name = "Master Playback Switch",
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.index = 0,
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.sid = SID_MASTER,
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.purpose = PURPOSE_SWITCH,
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.caps = SM_CAP_PSWITCH,
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}
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};
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int alsa_mixer_simple_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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{
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struct bclass_private *priv = snd_mixer_sbasic_get_private(class);
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return priv->ops.event(class, mask, helem, melem);
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}
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int alsa_mixer_simple_init(snd_mixer_class_t *class)
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{
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struct bclass_base_ops *ops;
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int err;
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err = mixer_simple_basic_dlopen(class, &ops);
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if (err < 0)
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return 0;
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err = ops->selreg(class, selectors, SELECTORS);
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if (err < 0)
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return err;
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err = ops->sidreg(class, sids, SELECTORS);
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if (err < 0)
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return err;
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return 0;
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}
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