4fb369f815
all of the hwvol members of struct snd_mixer live in a hwvol_* namespace. - When changing the mixer device via the hwvol_mixer sysctl, reset the muted state so that a mute operation on a new device won't try to unmute the new device with the old device's saved volume. - When the volume is muted, if a down or up volume request is received, first restore the saved volume level and then adjust it. Reviewed by: cg
49 lines
2.2 KiB
C
49 lines
2.2 KiB
C
/*
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* Copyright (c) 1999 Cameron Grant <gandalf@vilnya.demon.co.uk>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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extern int mixer_init(device_t dev, kobj_class_t cls, void *devinfo);
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extern int mixer_uninit(device_t dev);
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extern int mixer_reinit(device_t dev);
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extern int mixer_ioctl(snddev_info *d, u_long cmd, caddr_t arg);
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extern int mixer_busy(snd_mixer *m, int busy);
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extern int mixer_isbusy(snd_mixer *m);
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int mixer_hwvol_init(device_t dev);
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void mixer_hwvol_mute(device_t dev);
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void mixer_hwvol_step(device_t dev, int left_step, int right_step);
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extern void change_bits(mixer_tab *t, u_char *regval, int dev, int chn, int newval);
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void mix_setdevs(snd_mixer *m, u_int32_t v);
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void mix_setrecdevs(snd_mixer *m, u_int32_t v);
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u_int32_t mix_getdevs(snd_mixer *m);
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u_int32_t mix_getrecdevs(snd_mixer *m);
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void *mix_getdevinfo(snd_mixer *m);
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#define MIXER_DECLARE(name) DEFINE_CLASS(name, name ## _methods, sizeof(snd_mixer))
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