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
387 lines
8.1 KiB
C
387 lines
8.1 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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#include <dev/sound/pcm/sound.h>
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#include "mixer_if.h"
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MALLOC_DEFINE(M_MIXER, "mixer", "mixer");
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static u_int16_t snd_mixerdefaults[SOUND_MIXER_NRDEVICES] = {
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[SOUND_MIXER_VOLUME] = 75,
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[SOUND_MIXER_BASS] = 50,
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[SOUND_MIXER_TREBLE] = 50,
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[SOUND_MIXER_SYNTH] = 75,
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[SOUND_MIXER_PCM] = 75,
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[SOUND_MIXER_SPEAKER] = 75,
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[SOUND_MIXER_LINE] = 75,
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[SOUND_MIXER_MIC] = 0,
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[SOUND_MIXER_CD] = 75,
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[SOUND_MIXER_LINE1] = 75,
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[SOUND_MIXER_VIDEO] = 75,
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[SOUND_MIXER_RECLEV] = 0,
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[SOUND_MIXER_OGAIN] = 50,
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};
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static char* snd_mixernames[SOUND_MIXER_NRDEVICES] = SOUND_DEVICE_NAMES;
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static int
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mixer_lookup(char *devname)
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{
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int i;
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for (i = 0; i < SOUND_MIXER_NRDEVICES; i++)
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if (strncmp(devname, snd_mixernames[i],
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strlen(snd_mixernames[i])) == 0)
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return i;
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return -1;
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}
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static int
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mixer_set(snd_mixer *mixer, unsigned dev, unsigned lev)
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{
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unsigned l, r;
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int v;
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if ((dev >= SOUND_MIXER_NRDEVICES) || (0 == (mixer->devs & (1 << dev))))
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return -1;
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l = min((lev & 0x00ff), 100);
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r = min(((lev & 0xff00) >> 8), 100);
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v = MIXER_SET(mixer, dev, l, r);
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if (v < 0)
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return -1;
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mixer->level[dev] = l | (r << 8);
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return 0;
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}
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static int
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mixer_get(snd_mixer *mixer, int dev)
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{
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if ((dev < SOUND_MIXER_NRDEVICES) && (mixer->devs & (1 << dev)))
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return mixer->level[dev];
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else return -1;
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}
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static int
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mixer_setrecsrc(snd_mixer *mixer, u_int32_t src)
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{
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src &= mixer->recdevs;
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if (src == 0)
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src = SOUND_MASK_MIC;
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mixer->recsrc = MIXER_SETRECSRC(mixer, src);
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return 0;
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}
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static int
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mixer_getrecsrc(snd_mixer *mixer)
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{
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return mixer->recsrc;
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}
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void
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mix_setdevs(snd_mixer *m, u_int32_t v)
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{
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m->devs = v;
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}
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void
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mix_setrecdevs(snd_mixer *m, u_int32_t v)
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{
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m->recdevs = v;
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}
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u_int32_t
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mix_getdevs(snd_mixer *m)
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{
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return m->devs;
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}
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u_int32_t
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mix_getrecdevs(snd_mixer *m)
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{
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return m->recdevs;
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}
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void *
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mix_getdevinfo(snd_mixer *m)
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{
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return m->devinfo;
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}
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int
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mixer_busy(snd_mixer *m, int busy)
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{
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m->busy = busy;
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return 0;
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}
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int
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mixer_isbusy(snd_mixer *m)
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{
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return m->busy;
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}
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int
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mixer_init(device_t dev, kobj_class_t cls, void *devinfo)
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{
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snddev_info *d;
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snd_mixer *m;
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u_int16_t v;
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int i;
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d = device_get_softc(dev);
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m = (snd_mixer *)kobj_create(cls, M_MIXER, M_WAITOK | M_ZERO);
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m->name = cls->name;
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m->devinfo = devinfo;
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if (MIXER_INIT(m))
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goto bad;
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for (i = 0; i < SOUND_MIXER_NRDEVICES; i++) {
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v = snd_mixerdefaults[i];
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mixer_set(m, i, v | (v << 8));
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}
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mixer_setrecsrc(m, SOUND_MASK_MIC);
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d->mixer = m;
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return 0;
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bad: kobj_delete((kobj_t)m, M_MIXER);
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return -1;
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}
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int
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mixer_uninit(device_t dev)
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{
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int i;
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snddev_info *d;
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snd_mixer *m;
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d = device_get_softc(dev);
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m = d->mixer;
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for (i = 0; i < SOUND_MIXER_NRDEVICES; i++)
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mixer_set(m, i, 0);
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mixer_setrecsrc(m, SOUND_MASK_MIC);
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MIXER_UNINIT(m);
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kobj_delete((kobj_t)m, M_MIXER);
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d->mixer = NULL;
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return 0;
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}
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int
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mixer_reinit(device_t dev)
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{
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int i;
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snddev_info *d;
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snd_mixer *m;
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d = device_get_softc(dev);
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m = d->mixer;
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i = MIXER_REINIT(m);
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if (i)
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return i;
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for (i = 0; i < SOUND_MIXER_NRDEVICES; i++)
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mixer_set(m, i, m->level[i]);
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mixer_setrecsrc(m, m->recsrc);
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return 0;
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}
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int
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mixer_ioctl(snddev_info *d, u_long cmd, caddr_t arg)
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{
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int ret, *arg_i = (int *)arg;
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int v = -1, j = cmd & 0xff;
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snd_mixer *m;
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m = d->mixer;
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if ((cmd & MIXER_WRITE(0)) == MIXER_WRITE(0)) {
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if (j == SOUND_MIXER_RECSRC)
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ret = mixer_setrecsrc(m, *arg_i);
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else
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ret = mixer_set(m, j, *arg_i);
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return (ret == 0)? 0 : ENXIO;
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}
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if ((cmd & MIXER_READ(0)) == MIXER_READ(0)) {
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switch (j) {
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case SOUND_MIXER_DEVMASK:
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case SOUND_MIXER_CAPS:
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case SOUND_MIXER_STEREODEVS:
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v = mix_getdevs(m);
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break;
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case SOUND_MIXER_RECMASK:
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v = mix_getrecdevs(m);
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break;
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case SOUND_MIXER_RECSRC:
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v = mixer_getrecsrc(m);
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break;
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default:
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v = mixer_get(m, j);
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}
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*arg_i = v;
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return (v != -1)? 0 : ENXIO;
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}
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return ENXIO;
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}
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static int
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sysctl_hw_snd_hwvol_mixer(SYSCTL_HANDLER_ARGS)
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{
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char devname[32];
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int error, dev;
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snd_mixer *m;
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m = oidp->oid_arg1;
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strncpy(devname, snd_mixernames[m->hwvol_mixer], sizeof(devname));
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error = sysctl_handle_string(oidp, &devname[0], sizeof(devname), req);
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if (error == 0 && req->newptr != NULL) {
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dev = mixer_lookup(devname);
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if (dev == -1)
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return EINVAL;
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else if (dev != m->hwvol_mixer) {
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m->hwvol_mixer = dev;
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m->hwvol_muted = 0;
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}
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}
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return error;
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}
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int
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mixer_hwvol_init(device_t dev)
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{
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snddev_info *d;
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snd_mixer *m;
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d = device_get_softc(dev);
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m = d->mixer;
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m->hwvol_mixer = SOUND_MIXER_VOLUME;
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m->hwvol_step = 5;
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SYSCTL_ADD_INT(&d->sysctl_tree, SYSCTL_CHILDREN(d->sysctl_tree_top),
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OID_AUTO, "hwvol_step", CTLFLAG_RW, &m->hwvol_step, 0, "");
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SYSCTL_ADD_PROC(&d->sysctl_tree, SYSCTL_CHILDREN(d->sysctl_tree_top),
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OID_AUTO, "hwvol_mixer", CTLTYPE_STRING | CTLFLAG_RW, m, 0,
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sysctl_hw_snd_hwvol_mixer, "A", "")
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return 0;
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}
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void
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mixer_hwvol_mute(device_t dev)
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{
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snddev_info *d;
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snd_mixer *m;
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d = device_get_softc(dev);
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m = d->mixer;
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if (m->hwvol_muted) {
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m->hwvol_muted = 0;
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mixer_set(m, m->hwvol_mixer, m->hwvol_mute_level);
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} else {
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m->hwvol_muted++;
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m->hwvol_mute_level = mixer_get(m, m->hwvol_mixer);
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mixer_set(m, m->hwvol_mixer, 0);
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}
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}
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void
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mixer_hwvol_step(device_t dev, int left_step, int right_step)
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{
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snddev_info *d;
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snd_mixer *m;
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int level, left, right;
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d = device_get_softc(dev);
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m = d->mixer;
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if (m->hwvol_muted) {
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m->hwvol_muted = 0;
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level = m->hwvol_mute_level;
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} else
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level = mixer_get(m, m->hwvol_mixer);
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if (level != -1) {
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left = level & 0xff;
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right = level >> 8;
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left += left_step * m->hwvol_step;
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if (left < 0)
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left = 0;
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right += right_step * m->hwvol_step;
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if (right < 0)
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right = 0;
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mixer_set(m, m->hwvol_mixer, left | right << 8);
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}
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}
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/*
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* The various mixers use a variety of bitmasks etc. The Voxware
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* driver had a very nice technique to describe a mixer and interface
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* to it. A table defines, for each channel, which register, bits,
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* offset, polarity to use. This procedure creates the new value
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* using the table and the old value.
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*/
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void
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change_bits(mixer_tab *t, u_char *regval, int dev, int chn, int newval)
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{
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u_char mask;
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int shift;
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DEB(printf("ch_bits dev %d ch %d val %d old 0x%02x "
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"r %d p %d bit %d off %d\n",
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dev, chn, newval, *regval,
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(*t)[dev][chn].regno, (*t)[dev][chn].polarity,
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(*t)[dev][chn].nbits, (*t)[dev][chn].bitoffs ) );
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if ( (*t)[dev][chn].polarity == 1) /* reverse */
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newval = 100 - newval ;
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mask = (1 << (*t)[dev][chn].nbits) - 1;
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newval = (int) ((newval * mask) + 50) / 100; /* Scale it */
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shift = (*t)[dev][chn].bitoffs /*- (*t)[dev][LEFT_CHN].nbits + 1*/;
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*regval &= ~(mask << shift); /* Filter out the previous value */
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*regval |= (newval & mask) << shift; /* Set the new value */
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}
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