/**
* \file mixer/simple_none.c
* \brief Mixer Simple Element Class Interface
* \author Jaroslav Kysela <perex@perex.cz>
* \author Abramo Bagnara <abramo@alsa-project.org>
* \date 2001-2004
*
* Mixer simple element class interface.
*/
/*
* Mixer Interface - simple controls
* Copyright (c) 2000,2004 by Jaroslav Kysela <perex@perex.cz>
* Copyright (c) 2001 by Abramo Bagnara <abramo@alsa-project.org>
*
*
* This library is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <assert.h>
#include <math.h>
#include <limits.h>
#include "local.h"
#include "config.h"
#include "mixer_simple.h"
#ifndef DOC_HIDDEN
#define MIXER_COMPARE_WEIGHT_SIMPLE_BASE 0
#define MIXER_COMPARE_WEIGHT_NEXT_BASE 10000000
#define MIXER_COMPARE_WEIGHT_NOT_FOUND 1000000000
typedef enum _selem_ctl_type {
CTL_SINGLE,
CTL_GLOBAL_ENUM,
CTL_GLOBAL_SWITCH,
CTL_GLOBAL_VOLUME,
CTL_GLOBAL_ROUTE,
CTL_PLAYBACK_ENUM,
CTL_PLAYBACK_SWITCH,
CTL_PLAYBACK_VOLUME,
CTL_PLAYBACK_ROUTE,
CTL_CAPTURE_ENUM,
CTL_CAPTURE_SWITCH,
CTL_CAPTURE_VOLUME,
CTL_CAPTURE_ROUTE,
CTL_CAPTURE_SOURCE,
CTL_LAST = CTL_CAPTURE_SOURCE,
} selem_ctl_type_t;
typedef struct _selem_ctl {
snd_hctl_elem_t *elem;
snd_ctl_elem_type_t type;
unsigned int inactive: 1;
unsigned int values;
long min, max;
} selem_ctl_t;
typedef struct _selem_none {
sm_selem_t selem;
selem_ctl_t ctls[CTL_LAST + 1];
unsigned int capture_item;
struct selem_str {
unsigned int range: 1; /* Forced range */
unsigned int db_initialized: 1;
unsigned int db_init_error: 1;
long min, max;
unsigned int channels;
long vol[32];
unsigned int sw;
unsigned int *db_info;
} str[2];
} selem_none_t;
static const struct mixer_name_table {
const char *longname;
const char *shortname;
} name_table[] = {
{"Tone Control - Switch", "Tone"},
{"Tone Control - Bass", "Bass"},
{"Tone Control - Treble", "Treble"},
{"Synth Tone Control - Switch", "Synth Tone"},
{"Synth Tone Control - Bass", "Synth Bass"},
{"Synth Tone Control - Treble", "Synth Treble"},
{0, 0},
};
#endif /* !DOC_HIDDEN */
static const char *get_short_name(const char *lname)
{
const struct mixer_name_table *p;
for (p = name_table; p->longname; p++) {
if (!strcmp(lname, p->longname))
return p->shortname;
}
return lname;
}
static int compare_mixer_priority_lookup(const char **name, const char * const *names, int coef)
{
int res;
for (res = 0; *names; names++, res += coef) {
if (!strncmp(*name, *names, strlen(*names))) {
*name += strlen(*names);
if (**name == ' ')
(*name)++;
return res+1;
}
}
return MIXER_COMPARE_WEIGHT_NOT_FOUND;
}
static int get_compare_weight(const char *name, unsigned int idx)
{
static const char *const names[] = {
"Master",
"Headphone",
"Speaker",
"Tone",
"Bass",
"Treble",
"3D Control",
"PCM",
"Front",
"Surround",
"Center",
"LFE",
"Side",
"Synth",
"FM",
"Wave",
"Music",
"DSP",
"Line",
"CD",
"Mic",
"Video",
"Zoom Video",
"Phone",
"I2S",
"IEC958",
"PC Speaker",
"Beep",
"Aux",
"Mono",
"Playback",
"Capture",
"Mix",
NULL
};
static const char *const names1[] = {
"-",
NULL,
};
static const char *const names2[] = {
"Mono",
"Digital",
"Switch",
"Depth",
"Wide",
"Space",
"Level",
"Center",
"Output",
"Boost",
"Tone",
"Bass",
"Treble",
NULL,
};
const char *name1;
int res, res1;
if ((res = compare_mixer_priority_lookup((const char **)&name, names, 1000)) == MIXER_COMPARE_WEIGHT_NOT_FOUND)
return MIXER_COMPARE_WEIGHT_NOT_FOUND;
if (*name == '\0')
goto __res;
for (name1 = name; *name1 != '\0'; name1++);
for (name1--; name1 != name && *name1 != ' '; name1--);
while (name1 != name && *name1 == ' ')
name1--;
if (name1 != name) {
for (; name1 != name && *name1 != ' '; name1--);
name = name1;
if ((res1 = compare_mixer_priority_lookup((const char **)&name, names1, 200)) == MIXER_COMPARE_WEIGHT_NOT_FOUND)
return res;
res += res1;
} else {
name = name1;
}
if ((res1 = compare_mixer_priority_lookup((const char **)&name, names2, 20)) == MIXER_COMPARE_WEIGHT_NOT_FOUND)
return res;
__res:
return MIXER_COMPARE_WEIGHT_SIMPLE_BASE + res + idx;
}
static long to_user(selem_none_t *s, int dir, selem_ctl_t *c, long value)
{
int64_t n;
if (c->max == c->min)
return s->str[dir].min;
n = (int64_t) (value - c->min) * (s->str[dir].max - s->str[dir].min);
return s->str[dir].min + (n + (c->max - c->min) / 2) / (c->max - c->min);
}
static long from_user(selem_none_t *s, int dir, selem_ctl_t *c, long value)
{
int64_t n;
if (s->str[dir].max == s->str[dir].min)
return c->min;
n = (int64_t) (value - s->str[dir].min) * (c->max - c->min);
return c->min + (n + (s->str[dir].max - s->str[dir].min) / 2) / (s->str[dir].max - s->str[dir].min);
}
static int elem_read_volume(selem_none_t *s, int dir, selem_ctl_type_t type)
{
snd_ctl_elem_value_t ctl = {0};
unsigned int idx;
int err;
selem_ctl_t *c = &s->ctls[type];
if ((err = snd_hctl_elem_read(c->elem, &ctl)) < 0)
return err;
for (idx = 0; idx < s->str[dir].channels; idx++) {
unsigned int idx1 = idx;
if (idx >= c->values)
idx1 = 0;
s->str[dir].vol[idx] =
to_user(s, dir, c,
snd_ctl_elem_value_get_integer(&ctl, idx1));
}
return 0;
}
static int elem_read_switch(selem_none_t *s, int dir, selem_ctl_type_t type)
{
snd_ctl_elem_value_t ctl = {0};
unsigned int idx;
int err;
selem_ctl_t *c = &s->ctls[type];
if ((err = snd_hctl_elem_read(c->elem, &ctl)) < 0)
return err;
for (idx = 0; idx < s->str[dir].channels; idx++) {
unsigned int idx1 = idx;
if (idx >= c->values)
idx1 = 0;
if (!snd_ctl_elem_value_get_integer(&ctl, idx1))
s->str[dir].sw &= ~(1 << idx);
}
return 0;
}
static int elem_read_route(selem_none_t *s, int dir, selem_ctl_type_t type)
{
snd_ctl_elem_value_t ctl = {0};
unsigned int idx;
int err;
selem_ctl_t *c = &s->ctls[type];
if ((err = snd_hctl_elem_read(c->elem, &ctl)) < 0)
return err;
for (idx = 0; idx < s->str[dir].channels; idx++) {
unsigned int idx1 = idx;
if (idx >= c->values)
idx1 = 0;
if (!snd_ctl_elem_value_get_integer(&ctl,
idx1 * c->values + idx1))
s->str[dir].sw &= ~(1 << idx);
}
return 0;
}
static int elem_read_enum(selem_none_t *s)
{
snd_ctl_elem_value_t ctl = {0};
unsigned int idx;
int err;
int type;
selem_ctl_t *c;
type = CTL_GLOBAL_ENUM;
if ((s->selem.caps & (SM_CAP_CENUM | SM_CAP_PENUM)) ==
(SM_CAP_CENUM | SM_CAP_PENUM))
type = CTL_GLOBAL_ENUM;
else if (s->selem.caps & SM_CAP_PENUM)
type = CTL_PLAYBACK_ENUM;
else if (s->selem.caps & SM_CAP_CENUM)
type = CTL_CAPTURE_ENUM;
c = &s->ctls[type];
if ((err = snd_hctl_elem_read(c->elem, &ctl)) < 0)
return err;
for (idx = 0; idx < s->str[0].channels; idx++) {
unsigned int idx1 = idx;
if (idx >= c->values)
idx1 = 0;
s->str[0].vol[idx] =
snd_ctl_elem_value_get_enumerated(&ctl, idx1);
}
return 0;
}
static int selem_read(snd_mixer_elem_t *elem)
{
selem_none_t *s;
unsigned int idx;
int err = 0;
long pvol[32], cvol[32];
unsigned int psw, csw;
assert(snd_mixer_elem_get_type(elem) == SND_MIXER_ELEM_SIMPLE);
s = snd_mixer_elem_get_private(elem);
memcpy(pvol, s->str[SM_PLAY].vol, sizeof(pvol));
memset(&s->str[SM_PLAY].vol, 0, sizeof(s->str[SM_PLAY].vol));
psw = s->str[SM_PLAY].sw;
s->str[SM_PLAY].sw = ~0U;
memcpy(cvol, s->str[SM_CAPT].vol, sizeof(cvol));
memset(&s->str[SM_CAPT].vol, 0, sizeof(s->str[SM_CAPT].vol));
csw = s->str[SM_CAPT].sw;
s->str[SM_CAPT].sw = ~0U;
if (s->ctls[CTL_GLOBAL_ENUM].elem) {
err = elem_read_enum(s);
if (err < 0)
return err;
goto __skip_cswitch;
}
if (s->ctls[CTL_CAPTURE_ENUM].elem) {
err = elem_read_enum(s);
if (err < 0)
return err;
goto __skip_cswitch;
}
if (s->ctls[CTL_PLAYBACK_ENUM].elem) {
err = elem_read_enum(s);
if (err < 0)
return err;
goto __skip_cswitch;
}
if (s->ctls[CTL_PLAYBACK_VOLUME].elem)
err = elem_read_volume(s, SM_PLAY, CTL_PLAYBACK_VOLUME);
else if (s->ctls[CTL_GLOBAL_VOLUME].elem)
err = elem_read_volume(s, SM_PLAY, CTL_GLOBAL_VOLUME);
else if (s->ctls[CTL_SINGLE].elem &&
s->ctls[CTL_SINGLE].type == SND_CTL_ELEM_TYPE_INTEGER)
err = elem_read_volume(s, SM_PLAY, CTL_SINGLE);
if (err < 0)
return err;
if ((s->selem.caps & (SM_CAP_GSWITCH|SM_CAP_PSWITCH)) == 0) {
s->str[SM_PLAY].sw = 0;
goto __skip_pswitch;
}
if (s->ctls[CTL_PLAYBACK_SWITCH].elem) {
err = elem_read_switch(s, SM_PLAY, CTL_PLAYBACK_SWITCH);
if (err < 0)
return err;
}
if (s->ctls[CTL_GLOBAL_SWITCH].elem) {
err = elem_read_switch(s, SM_PLAY, CTL_GLOBAL_SWITCH);
if (err < 0)
return err;
}
if (s->ctls[CTL_SINGLE].elem &&
s->ctls[CTL_SINGLE].type == SND_CTL_ELEM_TYPE_BOOLEAN) {
err = elem_read_switch(s, SM_PLAY, CTL_SINGLE);
if (err < 0)
return err;
}
if (s->ctls[CTL_PLAYBACK_ROUTE].elem) {
err = elem_read_route(s, SM_PLAY, CTL_PLAYBACK_ROUTE);
if (err < 0)
return err;
}
if (s->ctls[CTL_GLOBAL_ROUTE].elem) {
err = elem_read_route(s, SM_PLAY, CTL_GLOBAL_ROUTE);
if (err < 0)
return err;
}
__skip_pswitch:
if (s->ctls[CTL_CAPTURE_VOLUME].elem)
err = elem_read_volume(s, SM_CAPT, CTL_CAPTURE_VOLUME);
else if (s->ctls[CTL_GLOBAL_VOLUME].elem)
err = elem_read_volume(s, SM_CAPT, CTL_GLOBAL_VOLUME);
else if (s->ctls[CTL_SINGLE].elem &&
s->ctls[CTL_SINGLE].type == SND_CTL_ELEM_TYPE_INTEGER)
err = elem_read_volume(s, SM_CAPT, CTL_SINGLE);
if (err < 0)
return err;
if ((s->selem.caps & (SM_CAP_GSWITCH|SM_CAP_CSWITCH)) == 0) {
s->str[SM_CAPT].sw = 0;
goto __skip_cswitch;
}
if (s->ctls[CTL_CAPTURE_SWITCH].elem) {
err = elem_read_switch(s, SM_CAPT, CTL_CAPTURE_SWITCH);
if (err < 0)
return err;
}
if (s->ctls[CTL_GLOBAL_SWITCH].elem) {
err = elem_read_switch(s, SM_CAPT, CTL_GLOBAL_SWITCH);
if (err < 0)
return err;
}
if (s->ctls[CTL_SINGLE].elem &&
s->ctls[CTL_SINGLE].type == SND_CTL_ELEM_TYPE_BOOLEAN) {
err = elem_read_switch(s, SM_CAPT, CTL_SINGLE);
if (err < 0)
return err;
}
if (s->ctls[CTL_CAPTURE_ROUTE].elem) {
err = elem_read_route(s, SM_CAPT, CTL_CAPTURE_ROUTE);
if (err < 0)
return err;
}
if (s->ctls[CTL_GLOBAL_ROUTE].elem) {
err = elem_read_route(s, SM_CAPT, CTL_GLOBAL_ROUTE);
if (err < 0)
return err;
}
if (s->ctls[CTL_CAPTURE_SOURCE].elem) {
snd_ctl_elem_value_t ctl = {0};
selem_ctl_t *c = &s->ctls[CTL_CAPTURE_SOURCE];
err = snd_hctl_elem_read(c->elem, &ctl);
if (err < 0)
return err;
for (idx = 0; idx < s->str[SM_CAPT].channels; idx++) {
unsigned int idx1 = idx;
if (idx >= c->values)
idx1 = 0;
if (snd_ctl_elem_value_get_enumerated(&ctl, idx1) !=
s->capture_item)
s->str[SM_CAPT].sw &= ~(1 << idx);
}
}
__skip_cswitch:
if (memcmp(pvol, s->str[SM_PLAY].vol, sizeof(pvol)) ||
psw != s->str[SM_PLAY].sw ||
memcmp(cvol, s->str[SM_CAPT].vol, sizeof(cvol)) ||
csw != s->str[SM_CAPT].sw)
return 1;
return 0;
}
static int elem_write_volume(selem_none_t *s, int dir, selem_ctl_type_t type)
{
snd_ctl_elem_value_t ctl = {0};
unsigned int idx;
int err;
selem_ctl_t *c = &s->ctls[type];
if ((err = snd_hctl_elem_read(c->elem, &ctl)) < 0)
return err;
for (idx = 0; idx < c->values; idx++)
snd_ctl_elem_value_set_integer(&ctl, idx,
from_user(s, dir, c, s->str[dir].vol[idx]));
if ((err = snd_hctl_elem_write(c->elem, &ctl)) < 0)
return err;
return 0;
}
static int elem_write_switch(selem_none_t *s, int dir, selem_ctl_type_t type)
{
snd_ctl_elem_value_t ctl = {0};
unsigned int idx;
int err;
selem_ctl_t *c = &s->ctls[type];
if ((err = snd_hctl_elem_read(c->elem, &ctl)) < 0)
return err;
for (idx = 0; idx < c->values; idx++)
snd_ctl_elem_value_set_integer(&ctl, idx,
!!(s->str[dir].sw & (1 << idx)));
if ((err = snd_hctl_elem_write(c->elem, &ctl)) < 0)
return err;
return 0;
}
static int elem_write_switch_constant(selem_none_t *s, selem_ctl_type_t type, int val)
{
snd_ctl_elem_value_t ctl = {0};
unsigned int idx;
int err;
selem_ctl_t *c = &s->ctls[type];
if ((err = snd_hctl_elem_read(c->elem, &ctl)) < 0)
return err;
for (idx = 0; idx < c->values; idx++)
snd_ctl_elem_value_set_integer(&ctl, idx, !!val);
if ((err = snd_hctl_elem_write(c->elem, &ctl)) < 0)
return err;
return 0;
}
static int elem_write_route(selem_none_t *s, int dir, selem_ctl_type_t type)
{
snd_ctl_elem_value_t ctl = {0};
unsigned int idx;
int err;
selem_ctl_t *c = &s->ctls[type];
if ((err = snd_hctl_elem_read(c->elem, &ctl)) < 0)
return err;
for (idx = 0; idx < c->values * c->values; idx++)
snd_ctl_elem_value_set_integer(&ctl, idx, 0);
for (idx = 0; idx < c->values; idx++)
snd_ctl_elem_value_set_integer(&ctl, idx * c->values + idx,
!!(s->str[dir].sw & (1 << idx)));
if ((err = snd_hctl_elem_write(c->elem, &ctl)) < 0)
return err;
return 0;
}
static int elem_write_enum(selem_none_t *s)
{
snd_ctl_elem_value_t ctl = {0};
unsigned int idx;
int err;
int type;
selem_ctl_t *c;
type = CTL_GLOBAL_ENUM;
if ((s->selem.caps & (SM_CAP_CENUM | SM_CAP_PENUM)) ==
(SM_CAP_CENUM | SM_CAP_PENUM))
type = CTL_GLOBAL_ENUM;
else if (s->selem.caps & SM_CAP_PENUM)
type = CTL_PLAYBACK_ENUM;
else if (s->selem.caps & SM_CAP_CENUM)
type = CTL_CAPTURE_ENUM;
c = &s->ctls[type];
if ((err = snd_hctl_elem_read(c->elem, &ctl)) < 0)
return err;
for (idx = 0; idx < c->values; idx++)
snd_ctl_elem_value_set_enumerated(&ctl, idx,
(unsigned int)s->str[0].vol[idx]);
if ((err = snd_hctl_elem_write(c->elem, &ctl)) < 0)
return err;
return 0;
}
static int selem_write_main(snd_mixer_elem_t *elem)
{
selem_none_t *s;
unsigned int idx;
int err;
assert(snd_mixer_elem_get_type(elem) == SND_MIXER_ELEM_SIMPLE);
s = snd_mixer_elem_get_private(elem);
if (s->ctls[CTL_GLOBAL_ENUM].elem)
return elem_write_enum(s);
if (s->ctls[CTL_PLAYBACK_ENUM].elem)
return elem_write_enum(s);
if (s->ctls[CTL_CAPTURE_ENUM].elem)
return elem_write_enum(s);
if (s->ctls[CTL_SINGLE].elem) {
if (s->ctls[CTL_SINGLE].type == SND_CTL_ELEM_TYPE_INTEGER)
err = elem_write_volume(s, SM_PLAY, CTL_SINGLE);
else
err = elem_write_switch(s, SM_PLAY, CTL_SINGLE);
if (err < 0)
return err;
}
if (s->ctls[CTL_GLOBAL_VOLUME].elem) {
err = elem_write_volume(s, SM_PLAY, CTL_GLOBAL_VOLUME);
if (err < 0)
return err;
}
if (s->ctls[CTL_GLOBAL_SWITCH].elem) {
if (s->ctls[CTL_PLAYBACK_SWITCH].elem &&
s->ctls[CTL_CAPTURE_SWITCH].elem)
err = elem_write_switch_constant(s, CTL_GLOBAL_SWITCH,
1);
else
err = elem_write_switch(s, SM_PLAY, CTL_GLOBAL_SWITCH);
if (err < 0)
return err;
}
if (s->ctls[CTL_PLAYBACK_VOLUME].elem) {
err = elem_write_volume(s, SM_PLAY, CTL_PLAYBACK_VOLUME);
if (err < 0)
return err;
}
if (s->ctls[CTL_PLAYBACK_SWITCH].elem) {
err = elem_write_switch(s, SM_PLAY, CTL_PLAYBACK_SWITCH);
if (err < 0)
return err;
}
if (s->ctls[CTL_PLAYBACK_ROUTE].elem) {
err = elem_write_route(s, SM_PLAY, CTL_PLAYBACK_ROUTE);
if (err < 0)
return err;
}
if (s->ctls[CTL_CAPTURE_VOLUME].elem) {
err = elem_write_volume(s, SM_CAPT, CTL_CAPTURE_VOLUME);
if (err < 0)
return err;
}
if (s->ctls[CTL_CAPTURE_SWITCH].elem) {
err = elem_write_switch(s, SM_CAPT, CTL_CAPTURE_SWITCH);
if (err < 0)
return err;
}
if (s->ctls[CTL_CAPTURE_ROUTE].elem) {
err = elem_write_route(s, SM_CAPT, CTL_CAPTURE_ROUTE);
if (err < 0)
return err;
}
if (s->ctls[CTL_CAPTURE_SOURCE].elem) {
snd_ctl_elem_value_t ctl = {0};
selem_ctl_t *c = &s->ctls[CTL_CAPTURE_SOURCE];
if ((err = snd_hctl_elem_read(c->elem, &ctl)) < 0)
return err;
for (idx = 0; idx < c->values; idx++) {
if (s->str[SM_CAPT].sw & (1 << idx))
snd_ctl_elem_value_set_enumerated(&ctl,
idx, s->capture_item);
}
if ((err = snd_hctl_elem_write(c->elem, &ctl)) < 0)
return err;
/* update the element, don't remove */
err = selem_read(elem);
if (err < 0)
return err;
}
return 0;
}
static int selem_write(snd_mixer_elem_t *elem)
{
int err;
err = selem_write_main(elem);
if (err < 0)
selem_read(elem);
return err;
}
static void selem_free(snd_mixer_elem_t *elem)
{
selem_none_t *simple = snd_mixer_elem_get_private(elem);
assert(snd_mixer_elem_get_type(elem) == SND_MIXER_ELEM_SIMPLE);
if (simple->selem.id)
snd_mixer_selem_id_free(simple->selem.id);
/* free db range information */
free(simple->str[0].db_info);
free(simple->str[1].db_info);
free(simple);
}
static int simple_update(snd_mixer_elem_t *melem)
{
selem_none_t *simple;
unsigned int caps, pchannels, cchannels;
long pmin, pmax, cmin, cmax;
selem_ctl_t *ctl;
caps = 0;
pchannels = 0;
pmin = LONG_MAX;
pmax = LONG_MIN;
cchannels = 0;
cmin = LONG_MAX;
cmax = LONG_MIN;
assert(snd_mixer_elem_get_type(melem) == SND_MIXER_ELEM_SIMPLE);
simple = snd_mixer_elem_get_private(melem);
ctl = &simple->ctls[CTL_SINGLE];
if (ctl->elem) {
pchannels = cchannels = ctl->values;
if (ctl->type == SND_CTL_ELEM_TYPE_INTEGER) {
caps |= SM_CAP_GVOLUME;
pmin = cmin = ctl->min;
pmax = cmax = ctl->max;
} else
caps |= SM_CAP_GSWITCH;
}
ctl = &simple->ctls[CTL_GLOBAL_SWITCH];
if (ctl->elem) {
if (pchannels < ctl->values)
pchannels = ctl->values;
if (cchannels < ctl->values)
cchannels = ctl->values;
caps |= SM_CAP_GSWITCH;
}
ctl = &simple->ctls[CTL_GLOBAL_ROUTE];
if (ctl->elem) {
if (pchannels < ctl->values)
pchannels = ctl->values;
if (cchannels < ctl->values)
cchannels = ctl->values;
caps |= SM_CAP_GSWITCH;
}
ctl = &simple->ctls[CTL_GLOBAL_VOLUME];
if (ctl->elem) {
if (pchannels < ctl->values)
pchannels = ctl->values;
if (pmin > ctl->min)
pmin = ctl->min;
if (pmax < ctl->max)
pmax = ctl->max;
if (cchannels < ctl->values)
cchannels = ctl->values;
if (cmin > ctl->min)
cmin = ctl->min;
if (cmax < ctl->max)
cmax = ctl->max;
caps |= SM_CAP_GVOLUME;
}
ctl = &simple->ctls[CTL_PLAYBACK_SWITCH];
if (ctl->elem) {
if (pchannels < ctl->values)
pchannels = ctl->values;
caps |= SM_CAP_PSWITCH;
caps &= ~SM_CAP_GSWITCH;
}
ctl = &simple->ctls[CTL_PLAYBACK_ROUTE];
if (ctl->elem) {
if (pchannels < ctl->values)
pchannels = ctl->values;
caps |= SM_CAP_PSWITCH;
caps &= ~SM_CAP_GSWITCH;
}
ctl = &simple->ctls[CTL_CAPTURE_SWITCH];
if (ctl->elem) {
if (cchannels < ctl->values)
cchannels = ctl->values;
caps |= SM_CAP_CSWITCH;
caps &= ~SM_CAP_GSWITCH;
}
ctl = &simple->ctls[CTL_CAPTURE_ROUTE];
if (ctl->elem) {
if (cchannels < ctl->values)
cchannels = ctl->values;
caps |= SM_CAP_CSWITCH;
caps &= ~SM_CAP_GSWITCH;
}
ctl = &simple->ctls[CTL_PLAYBACK_VOLUME];
if (ctl->elem) {
if (pchannels < ctl->values)
pchannels = ctl->values;
if (pmin > ctl->min)
pmin = ctl->min;
if (pmax < ctl->max)
pmax = ctl->max;
caps |= SM_CAP_PVOLUME;
caps &= ~SM_CAP_GVOLUME;
}
ctl = &simple->ctls[CTL_CAPTURE_VOLUME];
if (ctl->elem) {
if (cchannels < ctl->values)
cchannels = ctl->values;
if (cmin > ctl->min)
cmin = ctl->min;
if (cmax < ctl->max)
cmax = ctl->max;
caps |= SM_CAP_CVOLUME;
caps &= ~SM_CAP_GVOLUME;
}
ctl = &simple->ctls[CTL_CAPTURE_SOURCE];
if (ctl->elem) {
if (cchannels < ctl->values)
cchannels = ctl->values;
caps |= SM_CAP_CSWITCH | SM_CAP_CSWITCH_EXCL;
caps &= ~SM_CAP_GSWITCH;
}
ctl = &simple->ctls[CTL_GLOBAL_ENUM];
if (ctl->elem) {
if (pchannels < ctl->values)
pchannels = ctl->values;
caps |= SM_CAP_PENUM | SM_CAP_CENUM;
}
ctl = &simple->ctls[CTL_PLAYBACK_ENUM];
if (ctl->elem) {
if (pchannels < ctl->values)
pchannels = ctl->values;
caps |= SM_CAP_PENUM;
}
ctl = &simple->ctls[CTL_CAPTURE_ENUM];
if (ctl->elem) {
if (pchannels < ctl->values)
pchannels = ctl->values;
caps |= SM_CAP_CENUM;
}
if (pchannels > 32)
pchannels = 32;
if (cchannels > 32)
cchannels = 32;
if (caps & (SM_CAP_GSWITCH|SM_CAP_PSWITCH))
caps |= SM_CAP_PSWITCH_JOIN;
if (caps & (SM_CAP_GVOLUME|SM_CAP_PVOLUME))
caps |= SM_CAP_PVOLUME_JOIN;
if (caps & (SM_CAP_GSWITCH|SM_CAP_CSWITCH))
caps |= SM_CAP_CSWITCH_JOIN;
if (caps & (SM_CAP_GVOLUME|SM_CAP_CVOLUME))
caps |= SM_CAP_CVOLUME_JOIN;
if (pchannels > 1 || cchannels > 1) {
if (simple->ctls[CTL_SINGLE].elem &&
simple->ctls[CTL_SINGLE].values > 1) {
if (caps & SM_CAP_GSWITCH)
caps &= ~(SM_CAP_PSWITCH_JOIN|SM_CAP_CSWITCH_JOIN);
else
caps &= ~(SM_CAP_PVOLUME_JOIN|SM_CAP_CVOLUME_JOIN);
}
if (simple->ctls[CTL_GLOBAL_ROUTE].elem ||
(simple->ctls[CTL_GLOBAL_SWITCH].elem &&
simple->ctls[CTL_GLOBAL_SWITCH].values > 1)) {
caps &= ~(SM_CAP_PSWITCH_JOIN|SM_CAP_CSWITCH_JOIN);
}
if (simple->ctls[CTL_GLOBAL_VOLUME].elem &&
simple->ctls[CTL_GLOBAL_VOLUME].values > 1) {
caps &= ~(SM_CAP_PVOLUME_JOIN|SM_CAP_CVOLUME_JOIN);
}
}
if (pchannels > 1) {
if (simple->ctls[CTL_PLAYBACK_ROUTE].elem ||
(simple->ctls[CTL_PLAYBACK_SWITCH].elem &&
simple->ctls[CTL_PLAYBACK_SWITCH].values > 1)) {
caps &= ~SM_CAP_PSWITCH_JOIN;
}
if (simple->ctls[CTL_PLAYBACK_VOLUME].elem &&
simple->ctls[CTL_PLAYBACK_VOLUME].values > 1) {
caps &= ~SM_CAP_PVOLUME_JOIN;
}
}
if (cchannels > 1) {
if (simple->ctls[CTL_CAPTURE_ROUTE].elem ||
(simple->ctls[CTL_CAPTURE_SWITCH].elem &&
simple->ctls[CTL_CAPTURE_SWITCH].values > 1) ||
(simple->ctls[CTL_CAPTURE_SOURCE].elem &&
simple->ctls[CTL_CAPTURE_SOURCE].values > 1)) {
caps &= ~SM_CAP_CSWITCH_JOIN;
}
if (simple->ctls[CTL_CAPTURE_VOLUME].elem &&
simple->ctls[CTL_CAPTURE_VOLUME].values > 1) {
caps &= ~SM_CAP_CVOLUME_JOIN;
}
}
/* exceptions */
if ((caps & (SM_CAP_GSWITCH|SM_CAP_PSWITCH|SM_CAP_CSWITCH)) &&
(caps & (SM_CAP_GSWITCH|SM_CAP_PSWITCH|SM_CAP_CSWITCH)) == (caps & SM_CAP_GSWITCH)) {
caps &= ~(SM_CAP_GSWITCH|SM_CAP_CSWITCH_JOIN|SM_CAP_CSWITCH_EXCL);
caps |= SM_CAP_PSWITCH;
}
if ((caps & SM_CAP_GSWITCH) &&
(caps & (SM_CAP_PSWITCH|SM_CAP_CSWITCH)) == 0)
caps |= SM_CAP_PSWITCH|SM_CAP_CSWITCH;
if ((caps & SM_CAP_GVOLUME) &&
(caps & (SM_CAP_PVOLUME|SM_CAP_CVOLUME)) == 0)
caps |= SM_CAP_PVOLUME|SM_CAP_CVOLUME;
simple->selem.caps = caps;
simple->str[SM_PLAY].channels = pchannels;
if (!simple->str[SM_PLAY].range) {
simple->str[SM_PLAY].min = pmin != LONG_MAX ? pmin : 0;
simple->str[SM_PLAY].max = pmax != LONG_MIN ? pmax : 0;
}
simple->str[SM_CAPT].channels = cchannels;
if (!simple->str[SM_CAPT].range) {
simple->str[SM_CAPT].min = cmin != LONG_MAX ? cmin : 0;
simple->str[SM_CAPT].max = cmax != LONG_MIN ? cmax : 0;
}
return 0;
}
#ifndef DOC_HIDDEN
static const struct suf {
const char *suffix;
selem_ctl_type_t type;
} suffixes[] = {
{" Playback Enum", CTL_PLAYBACK_ENUM},
{" Playback Switch", CTL_PLAYBACK_SWITCH},
{" Playback Route", CTL_PLAYBACK_ROUTE},
{" Playback Volume", CTL_PLAYBACK_VOLUME},
{" Capture Enum", CTL_CAPTURE_ENUM},
{" Capture Switch", CTL_CAPTURE_SWITCH},
{" Capture Route", CTL_CAPTURE_ROUTE},
{" Capture Volume", CTL_CAPTURE_VOLUME},
{" Enum", CTL_GLOBAL_ENUM},
{" Switch", CTL_GLOBAL_SWITCH},
{" Route", CTL_GLOBAL_ROUTE},
{" Volume", CTL_GLOBAL_VOLUME},
{NULL, 0}
};
#endif
/* Return base length or 0 on failure */
static int base_len(const char *name, selem_ctl_type_t *type)
{
const struct suf *p;
size_t nlen = strlen(name);
p = suffixes;
while (p->suffix) {
size_t slen = strlen(p->suffix);
size_t l;
if (nlen > slen) {
l = nlen - slen;
if (strncmp(name + l, p->suffix, slen) == 0 &&
(l < 1 || name[l-1] != '-')) { /* 3D Control - Switch */
*type = p->type;
return l;
}
}
p++;
}
/* Special case - handle "Input Source" as a capture route.
* Note that it's *NO* capture source. A capture source is split over
* sub-elements, and multiple capture-sources will result in an error.
* That's why some drivers use "Input Source" as a workaround.
* Hence, this is a workaround for a workaround to get the things
* straight back again. Sigh.
*/
if (!strcmp(name, "Input Source")) {
*type = CTL_CAPTURE_ROUTE;
return strlen(name);
}
if (strstr(name, "3D Control")) {
if (strstr(name, "Depth")) {
*type = CTL_PLAYBACK_VOLUME;
return strlen(name);
}
}
return 0;
}
/*
* Simple Mixer Operations
*/
static int _snd_mixer_selem_set_volume(snd_mixer_elem_t *elem, int dir, snd_mixer_selem_channel_id_t channel, long value)
{
selem_none_t *s = snd_mixer_elem_get_private(elem);
if (s->selem.caps & SM_CAP_GVOLUME)
dir = SM_PLAY;
if ((unsigned int) channel >= s->str[dir].channels)
return 0;
if (value < s->str[dir].min || value > s->str[dir].max)
return 0;
if (s->selem.caps &
(dir == SM_PLAY ? SM_CAP_PVOLUME_JOIN : SM_CAP_CVOLUME_JOIN))
channel = 0;
if (value != s->str[dir].vol[channel]) {
s->str[dir].vol[channel] = value;
return 1;
}
return 0;
}
static int _snd_mixer_selem_set_switch(snd_mixer_elem_t *elem, int dir, snd_mixer_selem_channel_id_t channel, int value)
{
selem_none_t *s = snd_mixer_elem_get_private(elem);
if ((unsigned int) channel >= s->str[dir].channels)
return 0;
if (s->selem.caps &
(dir == SM_PLAY ? SM_CAP_PSWITCH_JOIN : SM_CAP_CSWITCH_JOIN))
channel = 0;
if (value) {
if (!(s->str[dir].sw & (1 << channel))) {
s->str[dir].sw |= 1 << channel;
return 1;
}
} else {
if (s->str[dir].sw & (1 << channel)) {
s->str[dir].sw &= ~(1 << channel);
return 1;
}
}
return 0;
}
static int is_ops(snd_mixer_elem_t *elem, int dir, int cmd, int val)
{
selem_none_t *s = snd_mixer_elem_get_private(elem);
switch (cmd) {
case SM_OPS_IS_ACTIVE: {
selem_ctl_type_t ctl;
for (ctl = CTL_SINGLE; ctl <= CTL_LAST; ctl++)
if (s->ctls[ctl].elem != NULL && s->ctls[ctl].inactive)
return 0;
return 1;
}
case SM_OPS_IS_MONO:
return s->str[dir].channels == 1;
case SM_OPS_IS_CHANNEL:
return (unsigned int) val < s->str[dir].channels;
case SM_OPS_IS_ENUMERATED:
if (val == 1) {
if (dir == SM_PLAY && (s->selem.caps & SM_CAP_PENUM) && !(s->selem.caps & SM_CAP_CENUM) )
return 1;
if (dir == SM_CAPT && (s->selem.caps & SM_CAP_CENUM) && !(s->selem.caps & SM_CAP_PENUM) )
return 1;
return 0;
}
if (s->selem.caps & (SM_CAP_CENUM | SM_CAP_PENUM) )
return 1;
return 0;
case SM_OPS_IS_ENUMCNT:
/* Both */
if ( (s->selem.caps & (SM_CAP_CENUM | SM_CAP_PENUM)) == (SM_CAP_CENUM | SM_CAP_PENUM) ) {
if (! s->ctls[CTL_GLOBAL_ENUM].elem)
return -EINVAL;
return s->ctls[CTL_GLOBAL_ENUM].max;
/* Only Playback */
} else if (s->selem.caps & SM_CAP_PENUM ) {
if (! s->ctls[CTL_PLAYBACK_ENUM].elem)
return -EINVAL;
return s->ctls[CTL_PLAYBACK_ENUM].max;
/* Only Capture */
} else if (s->selem.caps & SM_CAP_CENUM ) {
if (! s->ctls[CTL_CAPTURE_ENUM].elem)
return -EINVAL;
return s->ctls[CTL_CAPTURE_ENUM].max;
}
}
return 1;
}
static int get_range_ops(snd_mixer_elem_t *elem, int dir,
long *min, long *max)
{
selem_none_t *s = snd_mixer_elem_get_private(elem);
*min = s->str[dir].min;
*max = s->str[dir].max;
return 0;
}
static int set_range_ops(snd_mixer_elem_t *elem, int dir,
long min, long max)
{
selem_none_t *s = snd_mixer_elem_get_private(elem);
int err;
s->str[dir].range = 1;
s->str[dir].min = min;
s->str[dir].max = max;
if ((err = selem_read(elem)) < 0)
return err;
return 0;
}
static int get_volume_ops(snd_mixer_elem_t *elem, int dir,
snd_mixer_selem_channel_id_t channel, long *value)
{
selem_none_t *s = snd_mixer_elem_get_private(elem);
if (s->selem.caps & SM_CAP_GVOLUME)
dir = SM_PLAY;
if ((unsigned int) channel >= s->str[dir].channels)
return -EINVAL;
*value = s->str[dir].vol[channel];
return 0;
}
static int init_db_range(snd_hctl_elem_t *ctl, struct selem_str *rec);
static int convert_to_dB(snd_hctl_elem_t *ctl, struct selem_str *rec,
long volume, long *db_gain)
{
if (init_db_range(ctl, rec) < 0)
return -EINVAL;
return snd_tlv_convert_to_dB(rec->db_info, rec->min, rec->max,
volume, db_gain);
}
/* initialize dB range information, reading TLV via hcontrol
*/
static int init_db_range(snd_hctl_elem_t *ctl, struct selem_str *rec)
{
snd_ctl_elem_info_t info = {0};
unsigned int *tlv = NULL;
const unsigned int tlv_size = 4096;
unsigned int *dbrec;
int db_size;
if (rec->db_init_error)
return -EINVAL;
if (rec->db_initialized)
return 0;
if (snd_hctl_elem_info(ctl, &info) < 0)
goto error;
if (!snd_ctl_elem_info_is_tlv_readable(&info))
goto error;
tlv = malloc(tlv_size);
if (!tlv)
return -ENOMEM;
if (snd_hctl_elem_tlv_read(ctl, tlv, tlv_size) < 0)
goto error;
db_size = snd_tlv_parse_dB_info(tlv, tlv_size, &dbrec);
if (db_size < 0)
goto error;
rec->db_info = malloc(db_size);
if (!rec->db_info)
goto error;
memcpy(rec->db_info, dbrec, db_size);
free(tlv);
rec->db_initialized = 1;
return 0;
error:
free(tlv);
rec->db_init_error = 1;
return -EINVAL;
}
/* get selem_ctl for TLV access */
static selem_ctl_t *get_selem_ctl(selem_none_t *s, int dir)
{
selem_ctl_t *c;
if (dir == SM_PLAY)
c = &s->ctls[CTL_PLAYBACK_VOLUME];
else if (dir == SM_CAPT)
c = &s->ctls[CTL_CAPTURE_VOLUME];
else
return NULL;
if (! c->elem) {
c = &s->ctls[CTL_GLOBAL_VOLUME];
if (! c->elem)
return NULL;
}
if (c->type != SND_CTL_ELEM_TYPE_INTEGER)
return NULL;
return c;
}
static int get_dB_range(snd_hctl_elem_t *ctl, struct selem_str *rec,
long *min, long *max)
{
if (init_db_range(ctl, rec) < 0)
return -EINVAL;
return snd_tlv_get_dB_range(rec->db_info, rec->min, rec->max, min, max);
}
static int get_dB_range_ops(snd_mixer_elem_t *elem, int dir,
long *min, long *max)
{
selem_none_t *s = snd_mixer_elem_get_private(elem);
selem_ctl_t *c;
if (s->selem.caps & SM_CAP_GVOLUME)
dir = SM_PLAY;
c = get_selem_ctl(s, dir);
if (! c)
return -EINVAL;
return get_dB_range(c->elem, &s->str[dir], min, max);
}
static int convert_from_dB(snd_hctl_elem_t *ctl, struct selem_str *rec,
long db_gain, long *value, int xdir)
{
if (init_db_range(ctl, rec) < 0)
return -EINVAL;
return snd_tlv_convert_from_dB(rec->db_info, rec->min, rec->max,
db_gain, value, xdir);
}
static int ask_vol_dB_ops(snd_mixer_elem_t *elem,
int dir,
long value,
long *dBvalue)
{
selem_none_t *s = snd_mixer_elem_get_private(elem);
selem_ctl_t *c;
c = get_selem_ctl(s, dir);
if (! c)
return -EINVAL;
int res = convert_to_dB(c->elem, &s->str[dir], value, dBvalue);
return res;
}
static int get_dB_ops(snd_mixer_elem_t *elem,
int dir,
snd_mixer_selem_channel_id_t channel,
long *value)
{
selem_none_t *s = snd_mixer_elem_get_private(elem);
selem_ctl_t *c;
int err;
long volume, db_gain;
if (s->selem.caps & SM_CAP_GVOLUME)
dir = SM_PLAY;
c = get_selem_ctl(s, dir);
if (! c)
return -EINVAL;
if ((err = get_volume_ops(elem, dir, channel, &volume)) < 0)
goto _err;
if ((err = convert_to_dB(c->elem, &s->str[dir], volume, &db_gain)) < 0)
goto _err;
err = 0;
*value = db_gain;
_err:
return err;
}
static int get_switch_ops(snd_mixer_elem_t *elem, int dir,
snd_mixer_selem_channel_id_t channel, int *value)
{
selem_none_t *s = snd_mixer_elem_get_private(elem);
if (s->selem.caps & SM_CAP_GSWITCH)
dir = SM_PLAY;
if ((unsigned int) channel >= s->str[dir].channels)
return -EINVAL;
*value = !!(s->str[dir].sw & (1 << channel));
return 0;
}
static int set_volume_ops(snd_mixer_elem_t *elem, int dir,
snd_mixer_selem_channel_id_t channel, long value)
{
int changed;
changed = _snd_mixer_selem_set_volume(elem, dir, channel, value);
if (changed < 0)
return changed;
if (changed)
return selem_write(elem);
return 0;
}
static int ask_dB_vol_ops(snd_mixer_elem_t *elem, int dir,
long dbValue, long *value, int xdir)
{
selem_none_t *s = snd_mixer_elem_get_private(elem);
selem_ctl_t *c;
if (s->selem.caps & SM_CAP_GVOLUME)
dir = SM_PLAY;
c = get_selem_ctl(s, dir);
if (! c)
return -EINVAL;
return convert_from_dB(c->elem, &s->str[dir], dbValue, value, xdir);
}
static int set_dB_ops(snd_mixer_elem_t *elem, int dir,
snd_mixer_selem_channel_id_t channel,
long db_gain, int xdir)
{
selem_none_t *s = snd_mixer_elem_get_private(elem);
selem_ctl_t *c;
long value;
int err;
if (s->selem.caps & SM_CAP_GVOLUME)
dir = SM_PLAY;
c = get_selem_ctl(s, dir);
if (! c)
return -EINVAL;
err = convert_from_dB(c->elem, &s->str[dir], db_gain, &value, xdir);
if (err < 0)
return err;
return set_volume_ops(elem, dir, channel, value);
}
static int set_switch_ops(snd_mixer_elem_t *elem, int dir,
snd_mixer_selem_channel_id_t channel, int value)
{
int changed;
selem_none_t *s = snd_mixer_elem_get_private(elem);
if (s->selem.caps & SM_CAP_GSWITCH)
dir = SM_PLAY;
if (dir == SM_PLAY) {
if (! (s->selem.caps & (SM_CAP_GSWITCH|SM_CAP_PSWITCH)))
return -EINVAL;
} else {
if (! (s->selem.caps & (SM_CAP_GSWITCH|SM_CAP_CSWITCH)))
return -EINVAL;
}
changed = _snd_mixer_selem_set_switch(elem, dir, channel, value);
if (changed < 0)
return changed;
if (changed)
return selem_write(elem);
return 0;
}
static int enum_item_name_ops(snd_mixer_elem_t *elem,
unsigned int item,
size_t maxlen, char *buf)
{
selem_none_t *s = snd_mixer_elem_get_private(elem);
snd_ctl_elem_info_t info = {0};
snd_hctl_elem_t *helem;
int type;
type = CTL_GLOBAL_ENUM;
helem = s->ctls[type].elem;
if (!helem) {
type = CTL_PLAYBACK_ENUM;
helem = s->ctls[type].elem;
}
if (!helem) {
type = CTL_CAPTURE_ENUM;
helem = s->ctls[type].elem;
}
assert(helem);
if (item >= (unsigned int)s->ctls[type].max)
return -EINVAL;
snd_hctl_elem_info(helem, &info);
snd_ctl_elem_info_set_item(&info, item);
snd_hctl_elem_info(helem, &info);
strncpy(buf, snd_ctl_elem_info_get_item_name(&info), maxlen);
return 0;
}
static int get_enum_item_ops(snd_mixer_elem_t *elem,
snd_mixer_selem_channel_id_t channel,
unsigned int *itemp)
{
selem_none_t *s = snd_mixer_elem_get_private(elem);
snd_ctl_elem_value_t ctl = {0};
snd_hctl_elem_t *helem;
int err;
if ((unsigned int) channel >= s->str[0].channels)
return -EINVAL;
helem = s->ctls[CTL_GLOBAL_ENUM].elem;
if (!helem) helem = s->ctls[CTL_PLAYBACK_ENUM].elem;
if (!helem) helem = s->ctls[CTL_CAPTURE_ENUM].elem;
assert(helem);
err = snd_hctl_elem_read(helem, &ctl);
if (! err)
*itemp = snd_ctl_elem_value_get_enumerated(&ctl, channel);
return err;
}
static int set_enum_item_ops(snd_mixer_elem_t *elem,
snd_mixer_selem_channel_id_t channel,
unsigned int item)
{
selem_none_t *s = snd_mixer_elem_get_private(elem);
snd_ctl_elem_value_t ctl = {0};
snd_hctl_elem_t *helem;
int err;
int type;
if ((unsigned int) channel >= s->str[0].channels) {
return -EINVAL;
}
type = CTL_GLOBAL_ENUM;
helem = s->ctls[type].elem;
if (!helem) {
type = CTL_PLAYBACK_ENUM;
helem = s->ctls[type].elem;
}
if (!helem) {
type = CTL_CAPTURE_ENUM;
helem = s->ctls[type].elem;
}
assert(helem);
if (item >= (unsigned int)s->ctls[type].max) {
return -EINVAL;
}
err = snd_hctl_elem_read(helem, &ctl);
if (err < 0) {
return err;
}
snd_ctl_elem_value_set_enumerated(&ctl, channel, item);
return snd_hctl_elem_write(helem, &ctl);
}
static struct sm_elem_ops simple_none_ops = {
.is = is_ops,
.get_range = get_range_ops,
.get_dB_range = get_dB_range_ops,
.set_range = set_range_ops,
.ask_vol_dB = ask_vol_dB_ops,
.ask_dB_vol = ask_dB_vol_ops,
.get_volume = get_volume_ops,
.get_dB = get_dB_ops,
.set_volume = set_volume_ops,
.set_dB = set_dB_ops,
.get_switch = get_switch_ops,
.set_switch = set_switch_ops,
.enum_item_name = enum_item_name_ops,
.get_enum_item = get_enum_item_ops,
.set_enum_item = set_enum_item_ops
};
static int simple_add1(snd_mixer_class_t *class, const char *name,
snd_hctl_elem_t *helem, selem_ctl_type_t type,
unsigned int value)
{
snd_mixer_elem_t *melem;
snd_mixer_selem_id_t *id;
int new = 0;
int err;
snd_ctl_elem_info_t info = {0};
selem_none_t *simple;
const char *name1;
snd_ctl_elem_type_t ctype;
unsigned long values;
err = snd_hctl_elem_info(helem, &info);
if (err < 0)
return err;
ctype = snd_ctl_elem_info_get_type(&info);
values = snd_ctl_elem_info_get_count(&info);
switch (type) {
case CTL_SINGLE:
if (ctype == SND_CTL_ELEM_TYPE_ENUMERATED)
type = CTL_GLOBAL_ENUM;
else if (ctype != SND_CTL_ELEM_TYPE_BOOLEAN &&
ctype != SND_CTL_ELEM_TYPE_INTEGER)
return 0;
break;
case CTL_GLOBAL_ROUTE:
case CTL_PLAYBACK_ROUTE:
case CTL_CAPTURE_ROUTE:
{
unsigned int n;
if (ctype == SND_CTL_ELEM_TYPE_ENUMERATED) {
if (type == CTL_PLAYBACK_ROUTE)
type = CTL_PLAYBACK_ENUM;
else if (type == CTL_CAPTURE_ROUTE)
type = CTL_CAPTURE_ENUM;
else
type = CTL_GLOBAL_ENUM;
break;
}
if (ctype != SND_CTL_ELEM_TYPE_BOOLEAN)
return 0;
#ifdef HAVE_SOFT_FLOAT
/* up to 256 channels */
for (n = 1; n < 256; n++)
if (n * n == values)
break;
#else
n = sqrt((double)values);
#endif
if (n * n != values)
return 0;
values = n;
break;
}
case CTL_GLOBAL_SWITCH:
case CTL_PLAYBACK_SWITCH:
case CTL_CAPTURE_SWITCH:
if (ctype == SND_CTL_ELEM_TYPE_ENUMERATED) {
if (type == CTL_PLAYBACK_SWITCH)
type = CTL_PLAYBACK_ENUM;
else if (type == CTL_CAPTURE_SWITCH)
type = CTL_CAPTURE_ENUM;
else
type = CTL_GLOBAL_ENUM;
break;
}
if (ctype != SND_CTL_ELEM_TYPE_BOOLEAN)
return 0;
break;
case CTL_GLOBAL_VOLUME:
case CTL_PLAYBACK_VOLUME:
case CTL_CAPTURE_VOLUME:
if (ctype == SND_CTL_ELEM_TYPE_ENUMERATED) {
if (type == CTL_PLAYBACK_VOLUME)
type = CTL_PLAYBACK_ENUM;
else if (type == CTL_CAPTURE_VOLUME)
type = CTL_CAPTURE_ENUM;
else
type = CTL_GLOBAL_ENUM;
break;
}
if (ctype != SND_CTL_ELEM_TYPE_INTEGER)
return 0;
break;
case CTL_CAPTURE_SOURCE:
if (ctype != SND_CTL_ELEM_TYPE_ENUMERATED)
return 0;
break;
case CTL_GLOBAL_ENUM:
case CTL_PLAYBACK_ENUM:
case CTL_CAPTURE_ENUM:
if (ctype != SND_CTL_ELEM_TYPE_ENUMERATED)
return 0;
break;
default:
assert(0);
break;
}
name1 = get_short_name(name);
if (snd_mixer_selem_id_malloc(&id))
return -ENOMEM;
snd_mixer_selem_id_set_name(id, name1);
snd_mixer_selem_id_set_index(id, snd_hctl_elem_get_index(helem));
melem = snd_mixer_find_selem(snd_mixer_class_get_mixer(class), id);
if (!melem) {
simple = calloc(1, sizeof(*simple));
if (!simple) {
snd_mixer_selem_id_free(id);
return -ENOMEM;
}
simple->selem.id = id;
simple->selem.ops = &simple_none_ops;
err = snd_mixer_elem_new(&melem, SND_MIXER_ELEM_SIMPLE,
get_compare_weight(
snd_mixer_selem_id_get_name(simple->selem.id),
snd_mixer_selem_id_get_index(simple->selem.id)),
simple, selem_free);
if (err < 0) {
snd_mixer_selem_id_free(id);
free(simple);
return err;
}
new = 1;
} else {
simple = snd_mixer_elem_get_private(melem);
snd_mixer_selem_id_free(id);
}
if (simple->ctls[type].elem) {
SNDERR("helem (%s,'%s',%u,%u,%u) appears twice or more",
snd_ctl_elem_iface_name(
snd_hctl_elem_get_interface(helem)),
snd_hctl_elem_get_name(helem),
snd_hctl_elem_get_index(helem),
snd_hctl_elem_get_device(helem),
snd_hctl_elem_get_subdevice(helem));
err = -EINVAL;
goto __error;
}
simple->ctls[type].elem = helem;
simple->ctls[type].type = snd_ctl_elem_info_get_type(&info);
simple->ctls[type].inactive = snd_ctl_elem_info_is_inactive(&info);
simple->ctls[type].values = values;
if ( (type == CTL_GLOBAL_ENUM) ||
(type == CTL_PLAYBACK_ENUM) ||
(type == CTL_CAPTURE_ENUM) ) {
simple->ctls[type].min = 0;
simple->ctls[type].max = snd_ctl_elem_info_get_items(&info);
} else {
if (ctype == SND_CTL_ELEM_TYPE_INTEGER) {
simple->ctls[type].min =
snd_ctl_elem_info_get_min(&info);
simple->ctls[type].max =
snd_ctl_elem_info_get_max(&info);
}
}
switch (type) {
case CTL_CAPTURE_SOURCE:
simple->capture_item = value;
break;
default:
break;
}
err = snd_mixer_elem_attach(melem, helem);
if (err < 0)
goto __error;
err = simple_update(melem);
if (err < 0) {
if (new)
goto __error;
return err;
}
if (new)
err = snd_mixer_elem_add(melem, class);
else
err = snd_mixer_elem_info(melem);
if (err < 0)
return err;
err = selem_read(melem);
if (err < 0)
return err;
if (err)
err = snd_mixer_elem_value(melem);
return err;
__error:
if (new)
snd_mixer_elem_free(melem);
return -EINVAL;
}
static int simple_event_add(snd_mixer_class_t *class, snd_hctl_elem_t *helem)
{
const char *name = snd_hctl_elem_get_name(helem);
size_t len;
selem_ctl_type_t type = CTL_SINGLE; /* to shut up warning */
if (snd_hctl_elem_get_interface(helem) != SND_CTL_ELEM_IFACE_MIXER)
return 0;
if (strcmp(name, "Capture Source") == 0) {
snd_ctl_elem_info_t info = {0};
unsigned int k, items;
int err;
err = snd_hctl_elem_info(helem, &info);
assert(err >= 0);
if (snd_ctl_elem_info_get_type(&info) !=
SND_CTL_ELEM_TYPE_ENUMERATED)
return 0;
items = snd_ctl_elem_info_get_items(&info);
for (k = 0; k < items; ++k) {
const char *n;
snd_ctl_elem_info_set_item(&info, k);
err = snd_hctl_elem_info(helem, &info);
if (err < 0)
return err;
n = snd_ctl_elem_info_get_item_name(&info);
err = simple_add1(class, n, helem, CTL_CAPTURE_SOURCE,
k);
if (err < 0)
return err;
}
return 0;
}
len = base_len(name, &type);
if (len == 0) {
return simple_add1(class, name, helem, CTL_SINGLE, 0);
} else {
char ename[128];
if (len >= sizeof(ename))
len = sizeof(ename) - 1;
memcpy(ename, name, len);
ename[len] = 0;
/* exception: Capture Volume and Capture Switch */
if (type == CTL_GLOBAL_VOLUME && !strcmp(ename, "Capture"))
type = CTL_CAPTURE_VOLUME;
else if (type == CTL_GLOBAL_SWITCH && !strcmp(ename, "Capture"))
type = CTL_CAPTURE_SWITCH;
return simple_add1(class, ename, helem, type, 0);
}
}
static int simple_event_remove(snd_hctl_elem_t *helem,
snd_mixer_elem_t *melem)
{
selem_none_t *simple = snd_mixer_elem_get_private(melem);
int err;
int k;
for (k = 0; k <= CTL_LAST; k++) {
if (simple->ctls[k].elem == helem)
break;
}
assert(k <= CTL_LAST);
simple->ctls[k].elem = NULL;
err = snd_mixer_elem_detach(melem, helem);
if (err < 0)
return err;
if (snd_mixer_elem_empty(melem))
return snd_mixer_elem_remove(melem);
err = simple_update(melem);
return snd_mixer_elem_info(melem);
}
static int simple_event(snd_mixer_class_t *class, unsigned int mask,
snd_hctl_elem_t *helem, snd_mixer_elem_t *melem)
{
int err;
if (mask == SND_CTL_EVENT_MASK_REMOVE)
return simple_event_remove(helem, melem);
if (mask & SND_CTL_EVENT_MASK_ADD) {
err = simple_event_add(class, helem);
if (err < 0)
return err;
}
if (mask & SND_CTL_EVENT_MASK_INFO) {
err = simple_event_remove(helem, melem);
if (err < 0)
return err;
err = simple_event_add(class, helem);
if (err < 0)
return err;
return 0;
}
if (mask & SND_CTL_EVENT_MASK_VALUE) {
err = selem_read(melem);
if (err < 0)
return err;
if (err) {
err = snd_mixer_elem_value(melem);
if (err < 0)
return err;
}
}
return 0;
}
/**
* \brief Register mixer simple element class - none abstraction
* \param mixer Mixer handle
* \param options Options container
* \param classp Pointer to returned mixer simple element class handle (or NULL)
* \return 0 on success otherwise a negative error code
*/
int snd_mixer_simple_none_register(snd_mixer_t *mixer,
struct snd_mixer_selem_regopt *options ATTRIBUTE_UNUSED,
snd_mixer_class_t **classp)
{
snd_mixer_class_t *class;
int err;
if (snd_mixer_class_malloc(&class))
return -ENOMEM;
snd_mixer_class_set_event(class, simple_event);
snd_mixer_class_set_compare(class, snd_mixer_selem_compare);
err = snd_mixer_class_register(class, mixer);
if (err < 0) {
free(class);
return err;
}
if (classp)
*classp = class;
return 0;
}