66ef8af5b0
this introduces a new buffering mechanism which results in dramatic simplification of the channel manager. as several structures have changed, we take the opportunity to move their definitions into the source files where they are used, make them private and de-typedef them. the sound drivers are updated to use snd_setup_intr instead of bus_setup_intr, and to comply with the de-typedefed structures. the ac97, mixer and channel layers have been updated with finegrained locking, as have some drivers- not all though. the rest will follow soon.
405 lines
8.2 KiB
C
405 lines
8.2 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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#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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#define MIXER_NAMELEN 16
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struct snd_mixer {
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KOBJ_FIELDS;
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const char *type;
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void *devinfo;
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int busy;
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int hwvol_muted;
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int hwvol_mixer;
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int hwvol_step;
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u_int32_t hwvol_mute_level;
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u_int32_t devs;
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u_int32_t recdevs;
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u_int32_t recsrc;
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u_int16_t level[32];
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char name[MIXER_NAMELEN];
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void *lock;
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};
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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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#ifdef SND_DYNSYSCTL
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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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#endif
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static int
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mixer_set(struct 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(struct 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(struct 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(struct 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(struct 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(struct 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(struct 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(struct 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(struct 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(struct 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(struct 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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struct snddev_info *d;
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struct snd_mixer *m;
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u_int16_t v;
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int i;
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m = (struct snd_mixer *)kobj_create(cls, M_MIXER, M_WAITOK | M_ZERO);
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snprintf(m->name, MIXER_NAMELEN, "%s:mixer", device_get_nameunit(dev));
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m->lock = snd_mtxcreate(m->name);
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m->type = 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 = device_get_softc(dev);
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d->mixer = m;
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return 0;
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bad:
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snd_mtxlock(m->lock);
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snd_mtxfree(m->lock);
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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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struct snddev_info *d;
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struct snd_mixer *m;
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d = device_get_softc(dev);
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m = d->mixer;
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snd_mtxlock(m->lock);
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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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snd_mtxfree(m->lock);
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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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struct snddev_info *d;
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struct snd_mixer *m;
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d = device_get_softc(dev);
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m = d->mixer;
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snd_mtxlock(m->lock);
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i = MIXER_REINIT(m);
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if (i) {
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snd_mtxunlock(m->lock);
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return i;
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}
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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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snd_mtxunlock(m->lock);
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return 0;
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}
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int
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mixer_ioctl(struct 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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struct snd_mixer *m;
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m = d->mixer;
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snd_mtxlock(m->lock);
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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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snd_mtxunlock(m->lock);
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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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snd_mtxunlock(m->lock);
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return (v != -1)? 0 : ENXIO;
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}
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snd_mtxunlock(m->lock);
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return ENXIO;
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}
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#ifdef SND_DYNSYSCTL
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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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struct snd_mixer *m;
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m = oidp->oid_arg1;
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snd_mtxlock(m->lock);
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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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snd_mtxunlock(m->lock);
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return EINVAL;
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}
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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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snd_mtxunlock(m->lock);
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return error;
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}
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#endif
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int
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mixer_hwvol_init(device_t dev)
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{
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struct snddev_info *d;
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struct snd_mixer *m;
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d = device_get_softc(dev);
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m = d->mixer;
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snd_mtxlock(m->lock);
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m->hwvol_mixer = SOUND_MIXER_VOLUME;
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m->hwvol_step = 5;
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#ifdef SND_DYNSYSCTL
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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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#endif
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snd_mtxunlock(m->lock);
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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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struct snddev_info *d;
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struct snd_mixer *m;
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d = device_get_softc(dev);
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m = d->mixer;
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snd_mtxlock(m->lock);
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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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snd_mtxunlock(m->lock);
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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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struct snddev_info *d;
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struct 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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snd_mtxlock(m->lock);
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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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snd_mtxunlock(m->lock);
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}
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