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alsa-utils/amixer/amixer.c
Jaroslav Kysela 361734165e amixer: improve the raw percentual volume rounding 
In commit "ae9ddeb63443cc2c46e0f0b915466cca0f800372" the rint() was
changed to ceil(). Revert it back. The rint() rounding is more precise
for most cases.

Also, handle the special case where the percentual value is greather
then zero. Set the min + 1 value in this case.

At last, fix the return value in convert_prange() when range is zero.

Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2020-06-05 17:01:04 +02:00

1902 lines
52 KiB
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/*
* ALSA command line mixer utility
* Copyright (c) 1999-2000 by Jaroslav Kysela <perex@perex.cz>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; 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 <string.h>
#include <getopt.h>
#include <stdarg.h>
#include <ctype.h>
#include <math.h>
#include <errno.h>
#include <assert.h>
#include <alsa/asoundlib.h>
#include <poll.h>
#include <stdint.h>
#include "amixer.h"
#include "../alsamixer/volume_mapping.h"
#define LEVEL_BASIC (1<<0)
#define LEVEL_INACTIVE (1<<1)
#define LEVEL_ID (1<<2)
static int quiet = 0;
static int debugflag = 0;
static int no_check = 0;
static int smixer_level = 0;
static int ignore_error = 0;
static struct snd_mixer_selem_regopt smixer_options;
static char card[64] = "default";
static void error(const char *fmt,...)
{
va_list va;
va_start(va, fmt);
fprintf(stderr, "amixer: ");
vfprintf(stderr, fmt, va);
fprintf(stderr, "\n");
va_end(va);
}
static int help(void)
{
printf("Usage: amixer <options> [command]\n");
printf("\nAvailable options:\n");
printf(" -h,--help this help\n");
printf(" -c,--card N select the card\n");
printf(" -D,--device N select the device, default '%s'\n", card);
printf(" -d,--debug debug mode\n");
printf(" -n,--nocheck do not perform range checking\n");
printf(" -v,--version print version of this program\n");
printf(" -q,--quiet be quiet\n");
printf(" -i,--inactive show also inactive controls\n");
printf(" -a,--abstract L select abstraction level (none or basic)\n");
printf(" -s,--stdin Read and execute commands from stdin sequentially\n");
printf(" -R,--raw-volume Use the raw value (default)\n");
printf(" -M,--mapped-volume Use the mapped volume\n");
printf("\nAvailable commands:\n");
printf(" scontrols show all mixer simple controls\n");
printf(" scontents show contents of all mixer simple controls (default command)\n");
printf(" sset sID P set contents for one mixer simple control\n");
printf(" sget sID get contents for one mixer simple control\n");
printf(" controls show all controls for given card\n");
printf(" contents show contents of all controls for given card\n");
printf(" cset cID P set control contents for one control\n");
printf(" cget cID get control contents for one control\n");
return 0;
}
static int info(void)
{
int err;
snd_ctl_t *handle;
snd_mixer_t *mhandle;
snd_ctl_card_info_t *info;
snd_ctl_elem_list_t *clist;
snd_ctl_card_info_alloca(&info);
snd_ctl_elem_list_alloca(&clist);
if ((err = snd_ctl_open(&handle, card, 0)) < 0) {
error("Control device %s open error: %s", card, snd_strerror(err));
return err;
}
if ((err = snd_ctl_card_info(handle, info)) < 0) {
error("Control device %s hw info error: %s", card, snd_strerror(err));
return err;
}
printf("Card %s '%s'/'%s'\n", card, snd_ctl_card_info_get_id(info),
snd_ctl_card_info_get_longname(info));
printf(" Mixer name : '%s'\n", snd_ctl_card_info_get_mixername(info));
printf(" Components : '%s'\n", snd_ctl_card_info_get_components(info));
if ((err = snd_ctl_elem_list(handle, clist)) < 0) {
error("snd_ctl_elem_list failure: %s", snd_strerror(err));
} else {
printf(" Controls : %i\n", snd_ctl_elem_list_get_count(clist));
}
snd_ctl_close(handle);
if ((err = snd_mixer_open(&mhandle, 0)) < 0) {
error("Mixer open error: %s", snd_strerror(err));
return err;
}
if (smixer_level == 0 && (err = snd_mixer_attach(mhandle, card)) < 0) {
error("Mixer attach %s error: %s", card, snd_strerror(err));
snd_mixer_close(mhandle);
return err;
}
if ((err = snd_mixer_selem_register(mhandle, smixer_level > 0 ? &smixer_options : NULL, NULL)) < 0) {
error("Mixer register error: %s", snd_strerror(err));
snd_mixer_close(mhandle);
return err;
}
err = snd_mixer_load(mhandle);
if (err < 0) {
error("Mixer load %s error: %s", card, snd_strerror(err));
snd_mixer_close(mhandle);
return err;
}
printf(" Simple ctrls : %i\n", snd_mixer_get_count(mhandle));
snd_mixer_close(mhandle);
return 0;
}
static const char *control_type(snd_ctl_elem_info_t *info)
{
return snd_ctl_elem_type_name(snd_ctl_elem_info_get_type(info));
}
static const char *control_access(snd_ctl_elem_info_t *info)
{
static char result[10];
char *res = result;
*res++ = snd_ctl_elem_info_is_readable(info) ? 'r' : '-';
*res++ = snd_ctl_elem_info_is_writable(info) ? 'w' : '-';
*res++ = snd_ctl_elem_info_is_inactive(info) ? 'i' : '-';
*res++ = snd_ctl_elem_info_is_volatile(info) ? 'v' : '-';
*res++ = snd_ctl_elem_info_is_locked(info) ? 'l' : '-';
*res++ = snd_ctl_elem_info_is_tlv_readable(info) ? 'R' : '-';
*res++ = snd_ctl_elem_info_is_tlv_writable(info) ? 'W' : '-';
*res++ = snd_ctl_elem_info_is_tlv_commandable(info) ? 'C' : '-';
*res++ = '\0';
return result;
}
#define check_range(val, min, max) \
(no_check ? (val) : ((val < min) ? (min) : (val > max) ? (max) : (val)))
#if 0
static int convert_range(int val, int omin, int omax, int nmin, int nmax)
{
int orange = omax - omin, nrange = nmax - nmin;
if (orange == 0)
return 0;
return rint((((double)nrange * ((double)val - (double)omin)) + ((double)orange / 2.0)) / ((double)orange + (double)nmin));
}
#endif
#if 0
static int convert_db_range(int val, int omin, int omax, int nmin, int nmax)
{
int orange = omax - omin, nrange = nmax - nmin;
if (orange == 0)
return 0;
return rint((((double)nrange * ((double)val - (double)omin)) + ((double)orange / 2.0)) / (double)orange + (double)nmin);
}
#endif
/* Fuction to convert from volume to percentage. val = volume */
static int convert_prange(long val, long min, long max)
{
long range = max - min;
int tmp;
if (range == 0)
return min;
val -= min;
tmp = rint((double)val/(double)range * 100);
return tmp;
}
/* Function to convert from percentage to volume. perc = percentage */
static long convert_prange1(long perc, long min, long max)
{
long tmp;
tmp = rint(perc * (max - min) * 0.01);
if (tmp == 0 && perc > 0)
tmp++;
return tmp + min;
}
struct volume_ops {
int (*get_range)(snd_mixer_elem_t *elem, long *min, long *max);
int (*get)(snd_mixer_elem_t *elem, snd_mixer_selem_channel_id_t c,
long *value);
int (*set)(snd_mixer_elem_t *elem, snd_mixer_selem_channel_id_t c,
long value, int dir);
};
enum { VOL_RAW, VOL_DB, VOL_MAP };
struct volume_ops_set {
int (*has_volume)(snd_mixer_elem_t *elem);
struct volume_ops v[3];
};
static int set_playback_dB(snd_mixer_elem_t *elem,
snd_mixer_selem_channel_id_t c, long value, int dir)
{
return snd_mixer_selem_set_playback_dB(elem, c, value, dir);
}
static int set_capture_dB(snd_mixer_elem_t *elem,
snd_mixer_selem_channel_id_t c, long value, int dir)
{
return snd_mixer_selem_set_capture_dB(elem, c, value, dir);
}
static int set_playback_raw_volume(snd_mixer_elem_t *elem,
snd_mixer_selem_channel_id_t c,
long value, int dir)
{
return snd_mixer_selem_set_playback_volume(elem, c, value);
}
static int set_capture_raw_volume(snd_mixer_elem_t *elem,
snd_mixer_selem_channel_id_t c,
long value, int dir)
{
return snd_mixer_selem_set_capture_volume(elem, c, value);
}
/* FIXME: normalize to int32 space to be compatible with other types */
#define MAP_VOL_RES (INT32_MAX / 100)
static int get_mapped_volume_range(snd_mixer_elem_t *elem,
long *pmin, long *pmax)
{
*pmin = 0;
*pmax = MAP_VOL_RES;
return 0;
}
static int get_playback_mapped_volume(snd_mixer_elem_t *elem,
snd_mixer_selem_channel_id_t c,
long *value)
{
*value = (rint)(get_normalized_playback_volume(elem, c) * MAP_VOL_RES);
return 0;
}
static int set_playback_mapped_volume(snd_mixer_elem_t *elem,
snd_mixer_selem_channel_id_t c,
long value, int dir)
{
return set_normalized_playback_volume(elem, c,
(double)value / MAP_VOL_RES, dir);
}
static int get_capture_mapped_volume(snd_mixer_elem_t *elem,
snd_mixer_selem_channel_id_t c,
long *value)
{
*value = (rint)(get_normalized_capture_volume(elem, c) * MAP_VOL_RES);
return 0;
}
static int set_capture_mapped_volume(snd_mixer_elem_t *elem,
snd_mixer_selem_channel_id_t c,
long value, int dir)
{
return set_normalized_capture_volume(elem, c,
(double)value / MAP_VOL_RES, dir);
}
static const struct volume_ops_set vol_ops[2] = {
{
.has_volume = snd_mixer_selem_has_playback_volume,
.v = {{ snd_mixer_selem_get_playback_volume_range,
snd_mixer_selem_get_playback_volume,
set_playback_raw_volume },
{ snd_mixer_selem_get_playback_dB_range,
snd_mixer_selem_get_playback_dB,
set_playback_dB },
{ get_mapped_volume_range,
get_playback_mapped_volume,
set_playback_mapped_volume },
},
},
{
.has_volume = snd_mixer_selem_has_capture_volume,
.v = {{ snd_mixer_selem_get_capture_volume_range,
snd_mixer_selem_get_capture_volume,
set_capture_raw_volume },
{ snd_mixer_selem_get_capture_dB_range,
snd_mixer_selem_get_capture_dB,
set_capture_dB },
{ get_mapped_volume_range,
get_capture_mapped_volume,
set_capture_mapped_volume },
},
},
};
static int std_vol_type = VOL_RAW;
static int set_volume_simple(snd_mixer_elem_t *elem,
snd_mixer_selem_channel_id_t chn,
char **ptr, int dir)
{
long val, orig, pmin, pmax;
char *p = *ptr, *s;
int invalid = 0, percent = 0, err = 0;
int vol_type;
double scale = 1.0;
int correct = 0;
if (! vol_ops[dir].has_volume(elem))
invalid = 1;
if (*p == ':')
p++;
if (*p == '\0' || (!isdigit(*p) && *p != '-'))
goto skip;
s = p;
val = strtol(s, &p, 10);
if (*p == '.') {
p++;
strtol(p, &p, 10);
}
if (*p == '%') {
vol_type = std_vol_type;
percent = 1;
p++;
} else if (toupper(p[0]) == 'D' && toupper(p[1]) == 'B') {
vol_type = VOL_DB;
p += 2;
scale = 100;
} else {
vol_type = VOL_RAW;
}
if (*p && !strchr(",:+-", *p))
invalid = 1;
val = (long)(strtod(s, NULL) * scale);
if (vol_ops[dir].v[vol_type].get_range(elem, &pmin, &pmax) < 0)
invalid = 1;
if (percent)
val = (long)convert_prange1(val, pmin, pmax);
if (*p == '+' || *p == '-') {
if (! invalid) {
if (vol_ops[dir].v[vol_type].get(elem, chn, &orig) < 0)
invalid = 1;
if (*p == '+') {
val = orig + val;
correct = 1;
} else {
val = orig - val;
correct = -1;
}
}
p++;
}
if (*p && !strchr(",:", *p))
invalid = 1;
if (! invalid) {
val = check_range(val, pmin, pmax);
err = vol_ops[dir].v[vol_type].set(elem, chn, val, correct);
}
skip:
if (*p == ',')
p++;
*ptr = p;
return err ? err : (invalid ? -ENOENT : 0);
}
static int get_bool_simple(char **ptr, char *str, int invert, int orig)
{
if (**ptr == ':')
(*ptr)++;
if (!strncasecmp(*ptr, str, strlen(str))) {
orig = 1 ^ (invert ? 1 : 0);
while (**ptr != '\0' && **ptr != ',' && **ptr != ':')
(*ptr)++;
}
if (**ptr == ',' || **ptr == ':')
(*ptr)++;
return orig;
}
static int simple_skip_word(char **ptr, char *str)
{
char *xptr = *ptr;
if (*xptr == ':')
xptr++;
if (!strncasecmp(xptr, str, strlen(str))) {
while (*xptr != '\0' && *xptr != ',' && *xptr != ':')
xptr++;
if (*xptr == ',' || *xptr == ':')
xptr++;
*ptr = xptr;
return 1;
}
return 0;
}
static void show_control_id(snd_ctl_elem_id_t *id)
{
char *str;
str = snd_ctl_ascii_elem_id_get(id);
if (str)
printf("%s", str);
free(str);
}
static void print_spaces(unsigned int spaces)
{
while (spaces-- > 0)
putc(' ', stdout);
}
static void print_dB(long dB)
{
if (dB < 0) {
printf("-%li.%02lidB", -dB / 100, -dB % 100);
} else {
printf("%li.%02lidB", dB / 100, dB % 100);
}
}
static void decode_tlv(unsigned int spaces, unsigned int *tlv, unsigned int tlv_size)
{
unsigned int type = tlv[0];
unsigned int size;
unsigned int idx = 0;
const char *chmap_type = NULL;
int lf = 1;
if (tlv_size < 2 * sizeof(unsigned int)) {
printf("TLV size error!\n");
return;
}
print_spaces(spaces);
printf("| ");
type = tlv[idx++];
size = tlv[idx++];
tlv_size -= 2 * sizeof(unsigned int);
if (size > tlv_size) {
printf("TLV size error (%u, %u, %u)!\n", type, size, tlv_size);
return;
}
switch (type) {
case SND_CTL_TLVT_CONTAINER:
printf("container\n");
size += sizeof(unsigned int) -1;
size /= sizeof(unsigned int);
while (idx < size) {
if (tlv[idx+1] > (size - idx) * sizeof(unsigned int)) {
printf("TLV size error in compound!\n");
return;
}
decode_tlv(spaces + 2, tlv + idx, tlv[idx+1] + 8);
idx += 2 + (tlv[idx+1] + sizeof(unsigned int) - 1) / sizeof(unsigned int);
}
lf = 0;
break;
case SND_CTL_TLVT_DB_SCALE:
printf("dBscale-");
if (size != 2 * sizeof(unsigned int)) {
while (size > 0) {
printf("0x%08x,", tlv[idx++]);
size -= sizeof(unsigned int);
}
} else {
printf("min=");
print_dB((int)tlv[2]);
printf(",step=");
print_dB(tlv[3] & 0xffff);
printf(",mute=%i", (tlv[3] >> 16) & 1);
}
break;
#ifdef SND_CTL_TLVT_DB_LINEAR
case SND_CTL_TLVT_DB_LINEAR:
printf("dBlinear-");
if (size != 2 * sizeof(unsigned int)) {
while (size > 0) {
printf("0x%08x,", tlv[idx++]);
size -= sizeof(unsigned int);
}
} else {
printf("min=");
print_dB((int)tlv[2]);
printf(",max=");
print_dB((int)tlv[3]);
}
break;
#endif
#ifdef SND_CTL_TLVT_DB_RANGE
case SND_CTL_TLVT_DB_RANGE:
printf("dBrange-\n");
if ((size % (6 * sizeof(unsigned int))) != 0) {
while (size > 0) {
printf("0x%08x,", tlv[idx++]);
size -= sizeof(unsigned int);
}
break;
}
while (size > 0) {
print_spaces(spaces + 2);
printf("rangemin=%i,", tlv[idx++]);
printf(",rangemax=%i\n", tlv[idx++]);
decode_tlv(spaces + 4, tlv + idx, 4 * sizeof(unsigned int));
idx += 4;
size -= 6 * sizeof(unsigned int);
}
break;
#endif
#ifdef SND_CTL_TLVT_DB_MINMAX
case SND_CTL_TLVT_DB_MINMAX:
case SND_CTL_TLVT_DB_MINMAX_MUTE:
if (type == SND_CTL_TLVT_DB_MINMAX_MUTE)
printf("dBminmaxmute-");
else
printf("dBminmax-");
if (size != 2 * sizeof(unsigned int)) {
while (size > 0) {
printf("0x%08x,", tlv[idx++]);
size -= sizeof(unsigned int);
}
} else {
printf("min=");
print_dB((int)tlv[2]);
printf(",max=");
print_dB((int)tlv[3]);
}
break;
#endif
#ifdef SND_CTL_TLVT_CHMAP_FIXED
case SND_CTL_TLVT_CHMAP_FIXED:
chmap_type = "fixed";
/* Fall through */
case SND_CTL_TLVT_CHMAP_VAR:
if (!chmap_type)
chmap_type = "variable";
/* Fall through */
case SND_CTL_TLVT_CHMAP_PAIRED:
if (!chmap_type)
chmap_type = "paired";
printf("chmap-%s=", chmap_type);
while (size > 0) {
printf("%s", snd_pcm_chmap_name(tlv[idx++]));
size -= sizeof(unsigned int);
if (size > 0)
printf(",");
}
break;
#endif
default:
printf("unk-%u-", type);
while (size > 0) {
printf("0x%08x,", tlv[idx++]);
size -= sizeof(unsigned int);
}
break;
}
if (lf)
putc('\n', stdout);
}
static int show_control(const char *space, snd_hctl_elem_t *elem,
int level)
{
int err;
unsigned int item, idx, count, *tlv;
snd_ctl_elem_type_t type;
snd_ctl_elem_id_t *id;
snd_ctl_elem_info_t *info;
snd_ctl_elem_value_t *control;
snd_aes_iec958_t iec958;
snd_ctl_elem_id_alloca(&id);
snd_ctl_elem_info_alloca(&info);
snd_ctl_elem_value_alloca(&control);
if ((err = snd_hctl_elem_info(elem, info)) < 0) {
error("Control %s snd_hctl_elem_info error: %s\n", card, snd_strerror(err));
return err;
}
if (level & LEVEL_ID) {
snd_hctl_elem_get_id(elem, id);
show_control_id(id);
printf("\n");
}
count = snd_ctl_elem_info_get_count(info);
type = snd_ctl_elem_info_get_type(info);
printf("%s; type=%s,access=%s,values=%u", space, control_type(info), control_access(info), count);
switch (type) {
case SND_CTL_ELEM_TYPE_INTEGER:
printf(",min=%li,max=%li,step=%li\n",
snd_ctl_elem_info_get_min(info),
snd_ctl_elem_info_get_max(info),
snd_ctl_elem_info_get_step(info));
break;
case SND_CTL_ELEM_TYPE_INTEGER64:
printf(",min=%lli,max=%lli,step=%lli\n",
snd_ctl_elem_info_get_min64(info),
snd_ctl_elem_info_get_max64(info),
snd_ctl_elem_info_get_step64(info));
break;
case SND_CTL_ELEM_TYPE_ENUMERATED:
{
unsigned int items = snd_ctl_elem_info_get_items(info);
printf(",items=%u\n", items);
for (item = 0; item < items; item++) {
snd_ctl_elem_info_set_item(info, item);
if ((err = snd_hctl_elem_info(elem, info)) < 0) {
error("Control %s element info error: %s\n", card, snd_strerror(err));
return err;
}
printf("%s; Item #%u '%s'\n", space, item, snd_ctl_elem_info_get_item_name(info));
}
break;
}
default:
printf("\n");
break;
}
if (level & LEVEL_BASIC) {
if (!snd_ctl_elem_info_is_readable(info))
goto __skip_read;
if ((err = snd_hctl_elem_read(elem, control)) < 0) {
error("Control %s element read error: %s\n", card, snd_strerror(err));
return err;
}
printf("%s: values=", space);
for (idx = 0; idx < count; idx++) {
if (idx > 0)
printf(",");
switch (type) {
case SND_CTL_ELEM_TYPE_BOOLEAN:
printf("%s", snd_ctl_elem_value_get_boolean(control, idx) ? "on" : "off");
break;
case SND_CTL_ELEM_TYPE_INTEGER:
printf("%li", snd_ctl_elem_value_get_integer(control, idx));
break;
case SND_CTL_ELEM_TYPE_INTEGER64:
printf("%lli", snd_ctl_elem_value_get_integer64(control, idx));
break;
case SND_CTL_ELEM_TYPE_ENUMERATED:
printf("%u", snd_ctl_elem_value_get_enumerated(control, idx));
break;
case SND_CTL_ELEM_TYPE_BYTES:
printf("0x%02x", snd_ctl_elem_value_get_byte(control, idx));
break;
case SND_CTL_ELEM_TYPE_IEC958:
snd_ctl_elem_value_get_iec958(control, &iec958);
printf("[AES0=0x%02x AES1=0x%02x AES2=0x%02x AES3=0x%02x]",
iec958.status[0], iec958.status[1],
iec958.status[2], iec958.status[3]);
break;
default:
printf("?");
break;
}
}
printf("\n");
__skip_read:
if (!snd_ctl_elem_info_is_tlv_readable(info))
goto __skip_tlv;
/* skip ASoC ext bytes controls that may have huge binary TLV data */
if (type == SND_CTL_ELEM_TYPE_BYTES &&
!snd_ctl_elem_info_is_readable(info) &&
!snd_ctl_elem_info_is_writable(info)) {
printf("%s; ASoC TLV Byte control, skipping bytes dump\n", space);
goto __skip_tlv;
}
tlv = malloc(4096);
if ((err = snd_hctl_elem_tlv_read(elem, tlv, 4096)) < 0) {
error("Control %s element TLV read error: %s\n", card, snd_strerror(err));
free(tlv);
return err;
}
decode_tlv(strlen(space), tlv, 4096);
free(tlv);
}
__skip_tlv:
return 0;
}
static int controls(int level)
{
int err;
snd_hctl_t *handle;
snd_hctl_elem_t *elem;
snd_ctl_elem_id_t *id;
snd_ctl_elem_info_t *info;
snd_ctl_elem_id_alloca(&id);
snd_ctl_elem_info_alloca(&info);
if ((err = snd_hctl_open(&handle, card, 0)) < 0) {
error("Control %s open error: %s", card, snd_strerror(err));
return err;
}
if ((err = snd_hctl_load(handle)) < 0) {
error("Control %s local error: %s\n", card, snd_strerror(err));
return err;
}
for (elem = snd_hctl_first_elem(handle); elem; elem = snd_hctl_elem_next(elem)) {
if ((err = snd_hctl_elem_info(elem, info)) < 0) {
error("Control %s snd_hctl_elem_info error: %s\n", card, snd_strerror(err));
return err;
}
if (!(level & LEVEL_INACTIVE) && snd_ctl_elem_info_is_inactive(info))
continue;
snd_hctl_elem_get_id(elem, id);
show_control_id(id);
printf("\n");
if (level & LEVEL_BASIC)
show_control(" ", elem, 1);
}
snd_hctl_close(handle);
return 0;
}
static void show_selem_volume(snd_mixer_elem_t *elem,
snd_mixer_selem_channel_id_t chn, int dir,
long min, long max)
{
long raw, val;
vol_ops[dir].v[VOL_RAW].get(elem, chn, &raw);
if (std_vol_type == VOL_RAW)
val = convert_prange(raw, min, max);
else {
vol_ops[dir].v[std_vol_type].get(elem, chn, &val);
val = convert_prange(val, 0, MAP_VOL_RES);
}
printf(" %li [%li%%]", raw, val);
if (!vol_ops[dir].v[VOL_DB].get(elem, chn, &val)) {
printf(" [");
print_dB(val);
printf("]");
}
}
static int show_selem(snd_mixer_t *handle, snd_mixer_selem_id_t *id, const char *space, int level)
{
snd_mixer_selem_channel_id_t chn;
long pmin = 0, pmax = 0;
long cmin = 0, cmax = 0;
int psw, csw;
int pmono, cmono, mono_ok = 0;
snd_mixer_elem_t *elem;
elem = snd_mixer_find_selem(handle, id);
if (!elem) {
error("Mixer %s simple element not found", card);
return -ENOENT;
}
if (level & LEVEL_BASIC) {
printf("%sCapabilities:", space);
if (snd_mixer_selem_has_common_volume(elem)) {
printf(" volume");
if (snd_mixer_selem_has_playback_volume_joined(elem))
printf(" volume-joined");
} else {
if (snd_mixer_selem_has_playback_volume(elem)) {
printf(" pvolume");
if (snd_mixer_selem_has_playback_volume_joined(elem))
printf(" pvolume-joined");
}
if (snd_mixer_selem_has_capture_volume(elem)) {
printf(" cvolume");
if (snd_mixer_selem_has_capture_volume_joined(elem))
printf(" cvolume-joined");
}
}
if (snd_mixer_selem_has_common_switch(elem)) {
printf(" switch");
if (snd_mixer_selem_has_playback_switch_joined(elem))
printf(" switch-joined");
} else {
if (snd_mixer_selem_has_playback_switch(elem)) {
printf(" pswitch");
if (snd_mixer_selem_has_playback_switch_joined(elem))
printf(" pswitch-joined");
}
if (snd_mixer_selem_has_capture_switch(elem)) {
printf(" cswitch");
if (snd_mixer_selem_has_capture_switch_joined(elem))
printf(" cswitch-joined");
if (snd_mixer_selem_has_capture_switch_exclusive(elem))
printf(" cswitch-exclusive");
}
}
if (snd_mixer_selem_is_enum_playback(elem)) {
printf(" penum");
} else if (snd_mixer_selem_is_enum_capture(elem)) {
printf(" cenum");
} else if (snd_mixer_selem_is_enumerated(elem)) {
printf(" enum");
}
printf("\n");
if (snd_mixer_selem_is_enumerated(elem)) {
int i, items;
unsigned int idx;
/*
* See snd_ctl_elem_init_enum_names() in
* sound/core/control.c.
*/
char itemname[64];
items = snd_mixer_selem_get_enum_items(elem);
printf(" Items:");
for (i = 0; i < items; i++) {
snd_mixer_selem_get_enum_item_name(elem, i, sizeof(itemname) - 1, itemname);
printf(" '%s'", itemname);
}
printf("\n");
for (i = 0; !snd_mixer_selem_get_enum_item(elem, i, &idx); i++) {
snd_mixer_selem_get_enum_item_name(elem, idx, sizeof(itemname) - 1, itemname);
printf(" Item%d: '%s'\n", i, itemname);
}
return 0; /* no more thing to do */
}
if (snd_mixer_selem_has_capture_switch_exclusive(elem))
printf("%sCapture exclusive group: %i\n", space,
snd_mixer_selem_get_capture_group(elem));
if (snd_mixer_selem_has_playback_volume(elem) ||
snd_mixer_selem_has_playback_switch(elem)) {
printf("%sPlayback channels:", space);
if (snd_mixer_selem_is_playback_mono(elem)) {
printf(" Mono");
} else {
int first = 1;
for (chn = 0; chn <= SND_MIXER_SCHN_LAST; chn++){
if (!snd_mixer_selem_has_playback_channel(elem, chn))
continue;
if (!first)
printf(" -");
printf(" %s", snd_mixer_selem_channel_name(chn));
first = 0;
}
}
printf("\n");
}
if (snd_mixer_selem_has_capture_volume(elem) ||
snd_mixer_selem_has_capture_switch(elem)) {
printf("%sCapture channels:", space);
if (snd_mixer_selem_is_capture_mono(elem)) {
printf(" Mono");
} else {
int first = 1;
for (chn = 0; chn <= SND_MIXER_SCHN_LAST; chn++){
if (!snd_mixer_selem_has_capture_channel(elem, chn))
continue;
if (!first)
printf(" -");
printf(" %s", snd_mixer_selem_channel_name(chn));
first = 0;
}
}
printf("\n");
}
if (snd_mixer_selem_has_playback_volume(elem) ||
snd_mixer_selem_has_capture_volume(elem)) {
printf("%sLimits:", space);
if (snd_mixer_selem_has_common_volume(elem)) {
snd_mixer_selem_get_playback_volume_range(elem, &pmin, &pmax);
snd_mixer_selem_get_capture_volume_range(elem, &cmin, &cmax);
printf(" %li - %li", pmin, pmax);
} else {
if (snd_mixer_selem_has_playback_volume(elem)) {
snd_mixer_selem_get_playback_volume_range(elem, &pmin, &pmax);
printf(" Playback %li - %li", pmin, pmax);
}
if (snd_mixer_selem_has_capture_volume(elem)) {
snd_mixer_selem_get_capture_volume_range(elem, &cmin, &cmax);
printf(" Capture %li - %li", cmin, cmax);
}
}
printf("\n");
}
pmono = snd_mixer_selem_has_playback_channel(elem, SND_MIXER_SCHN_MONO) &&
(snd_mixer_selem_is_playback_mono(elem) ||
(!snd_mixer_selem_has_playback_volume(elem) &&
!snd_mixer_selem_has_playback_switch(elem)));
cmono = snd_mixer_selem_has_capture_channel(elem, SND_MIXER_SCHN_MONO) &&
(snd_mixer_selem_is_capture_mono(elem) ||
(!snd_mixer_selem_has_capture_volume(elem) &&
!snd_mixer_selem_has_capture_switch(elem)));
#if 0
printf("pmono = %i, cmono = %i (%i, %i, %i, %i)\n", pmono, cmono,
snd_mixer_selem_has_capture_channel(elem, SND_MIXER_SCHN_MONO),
snd_mixer_selem_is_capture_mono(elem),
snd_mixer_selem_has_capture_volume(elem),
snd_mixer_selem_has_capture_switch(elem));
#endif
if (pmono || cmono) {
if (!mono_ok) {
printf("%s%s:", space, "Mono");
mono_ok = 1;
}
if (snd_mixer_selem_has_common_volume(elem)) {
show_selem_volume(elem, SND_MIXER_SCHN_MONO, 0, pmin, pmax);
}
if (snd_mixer_selem_has_common_switch(elem)) {
snd_mixer_selem_get_playback_switch(elem, SND_MIXER_SCHN_MONO, &psw);
printf(" [%s]", psw ? "on" : "off");
}
}
if (pmono && snd_mixer_selem_has_playback_channel(elem, SND_MIXER_SCHN_MONO)) {
int title = 0;
if (!mono_ok) {
printf("%s%s:", space, "Mono");
mono_ok = 1;
}
if (!snd_mixer_selem_has_common_volume(elem)) {
if (snd_mixer_selem_has_playback_volume(elem)) {
printf(" Playback");
title = 1;
show_selem_volume(elem, SND_MIXER_SCHN_MONO, 0, pmin, pmax);
}
}
if (!snd_mixer_selem_has_common_switch(elem)) {
if (snd_mixer_selem_has_playback_switch(elem)) {
if (!title)
printf(" Playback");
snd_mixer_selem_get_playback_switch(elem, SND_MIXER_SCHN_MONO, &psw);
printf(" [%s]", psw ? "on" : "off");
}
}
}
if (cmono && snd_mixer_selem_has_capture_channel(elem, SND_MIXER_SCHN_MONO)) {
int title = 0;
if (!mono_ok) {
printf("%s%s:", space, "Mono");
mono_ok = 1;
}
if (!snd_mixer_selem_has_common_volume(elem)) {
if (snd_mixer_selem_has_capture_volume(elem)) {
printf(" Capture");
title = 1;
show_selem_volume(elem, SND_MIXER_SCHN_MONO, 1, cmin, cmax);
}
}
if (!snd_mixer_selem_has_common_switch(elem)) {
if (snd_mixer_selem_has_capture_switch(elem)) {
if (!title)
printf(" Capture");
snd_mixer_selem_get_capture_switch(elem, SND_MIXER_SCHN_MONO, &csw);
printf(" [%s]", csw ? "on" : "off");
}
}
}
if (pmono || cmono)
printf("\n");
if (!pmono || !cmono) {
for (chn = 0; chn <= SND_MIXER_SCHN_LAST; chn++) {
if ((pmono || !snd_mixer_selem_has_playback_channel(elem, chn)) &&
(cmono || !snd_mixer_selem_has_capture_channel(elem, chn)))
continue;
printf("%s%s:", space, snd_mixer_selem_channel_name(chn));
if (!pmono && !cmono && snd_mixer_selem_has_common_volume(elem)) {
show_selem_volume(elem, chn, 0, pmin, pmax);
}
if (!pmono && !cmono && snd_mixer_selem_has_common_switch(elem)) {
snd_mixer_selem_get_playback_switch(elem, chn, &psw);
printf(" [%s]", psw ? "on" : "off");
}
if (!pmono && snd_mixer_selem_has_playback_channel(elem, chn)) {
int title = 0;
if (!snd_mixer_selem_has_common_volume(elem)) {
if (snd_mixer_selem_has_playback_volume(elem)) {
printf(" Playback");
title = 1;
show_selem_volume(elem, chn, 0, pmin, pmax);
}
}
if (!snd_mixer_selem_has_common_switch(elem)) {
if (snd_mixer_selem_has_playback_switch(elem)) {
if (!title)
printf(" Playback");
snd_mixer_selem_get_playback_switch(elem, chn, &psw);
printf(" [%s]", psw ? "on" : "off");
}
}
}
if (!cmono && snd_mixer_selem_has_capture_channel(elem, chn)) {
int title = 0;
if (!snd_mixer_selem_has_common_volume(elem)) {
if (snd_mixer_selem_has_capture_volume(elem)) {
printf(" Capture");
title = 1;
show_selem_volume(elem, chn, 1, cmin, cmax);
}
}
if (!snd_mixer_selem_has_common_switch(elem)) {
if (snd_mixer_selem_has_capture_switch(elem)) {
if (!title)
printf(" Capture");
snd_mixer_selem_get_capture_switch(elem, chn, &csw);
printf(" [%s]", csw ? "on" : "off");
}
}
}
printf("\n");
}
}
}
return 0;
}
static int selems(int level)
{
int err;
snd_mixer_t *handle;
snd_mixer_selem_id_t *sid;
snd_mixer_elem_t *elem;
snd_mixer_selem_id_alloca(&sid);
if ((err = snd_mixer_open(&handle, 0)) < 0) {
error("Mixer %s open error: %s", card, snd_strerror(err));
return err;
}
if (smixer_level == 0 && (err = snd_mixer_attach(handle, card)) < 0) {
error("Mixer attach %s error: %s", card, snd_strerror(err));
snd_mixer_close(handle);
return err;
}
if ((err = snd_mixer_selem_register(handle, smixer_level > 0 ? &smixer_options : NULL, NULL)) < 0) {
error("Mixer register error: %s", snd_strerror(err));
snd_mixer_close(handle);
return err;
}
err = snd_mixer_load(handle);
if (err < 0) {
error("Mixer %s load error: %s", card, snd_strerror(err));
snd_mixer_close(handle);
return err;
}
for (elem = snd_mixer_first_elem(handle); elem; elem = snd_mixer_elem_next(elem)) {
snd_mixer_selem_get_id(elem, sid);
if (!(level & LEVEL_INACTIVE) && !snd_mixer_selem_is_active(elem))
continue;
printf("Simple mixer control '%s',%i\n", snd_mixer_selem_id_get_name(sid), snd_mixer_selem_id_get_index(sid));
show_selem(handle, sid, " ", level);
}
snd_mixer_close(handle);
return 0;
}
static int parse_simple_id(const char *str, snd_mixer_selem_id_t *sid)
{
int c, size;
char buf[128];
char *ptr = buf;
while (*str == ' ' || *str == '\t')
str++;
if (!(*str))
return -EINVAL;
size = 1; /* for '\0' */
if (*str != '"' && *str != '\'') {
while (*str && *str != ',') {
if (size < (int)sizeof(buf)) {
*ptr++ = *str;
size++;
}
str++;
}
} else {
c = *str++;
while (*str && *str != c) {
if (size < (int)sizeof(buf)) {
*ptr++ = *str;
size++;
}
str++;
}
if (*str == c)
str++;
}
if (*str == '\0') {
snd_mixer_selem_id_set_index(sid, 0);
*ptr = 0;
goto _set;
}
if (*str != ',')
return -EINVAL;
*ptr = 0; /* terminate the string */
str++;
if (!isdigit(*str))
return -EINVAL;
snd_mixer_selem_id_set_index(sid, atoi(str));
_set:
snd_mixer_selem_id_set_name(sid, buf);
return 0;
}
static int cset(int argc, char *argv[], int roflag, int keep_handle)
{
int err;
static snd_ctl_t *handle = NULL;
snd_ctl_elem_info_t *info;
snd_ctl_elem_id_t *id;
snd_ctl_elem_value_t *control;
snd_ctl_elem_info_alloca(&info);
snd_ctl_elem_id_alloca(&id);
snd_ctl_elem_value_alloca(&control);
if (argc < 1) {
fprintf(stderr, "Specify a full control identifier: [[iface=<iface>,][name='name',][index=<index>,][device=<device>,][subdevice=<subdevice>]]|[numid=<numid>]\n");
return -EINVAL;
}
if (snd_ctl_ascii_elem_id_parse(id, argv[0])) {
fprintf(stderr, "Wrong control identifier: %s\n", argv[0]);
return -EINVAL;
}
if (debugflag) {
printf("VERIFY ID: ");
show_control_id(id);
printf("\n");
}
if (handle == NULL &&
(err = snd_ctl_open(&handle, card, 0)) < 0) {
error("Control %s open error: %s\n", card, snd_strerror(err));
return err;
}
snd_ctl_elem_info_set_id(info, id);
if ((err = snd_ctl_elem_info(handle, info)) < 0) {
if (ignore_error)
return 0;
error("Cannot find the given element from control %s\n", card);
if (! keep_handle) {
snd_ctl_close(handle);
handle = NULL;
}
return err;
}
snd_ctl_elem_info_get_id(info, id); /* FIXME: Remove it when hctl find works ok !!! */
if (!roflag) {
snd_ctl_elem_value_set_id(control, id);
if ((err = snd_ctl_elem_read(handle, control)) < 0) {
if (ignore_error)
return 0;
error("Cannot read the given element from control %s\n", card);
if (! keep_handle) {
snd_ctl_close(handle);
handle = NULL;
}
return err;
}
err = snd_ctl_ascii_value_parse(handle, control, info, argv[1]);
if (err < 0) {
if (!ignore_error)
error("Control %s parse error: %s\n", card, snd_strerror(err));
if (!keep_handle) {
snd_ctl_close(handle);
handle = NULL;
}
return ignore_error ? 0 : err;
}
if ((err = snd_ctl_elem_write(handle, control)) < 0) {
if (!ignore_error)
error("Control %s element write error: %s\n", card, snd_strerror(err));
if (!keep_handle) {
snd_ctl_close(handle);
handle = NULL;
}
return ignore_error ? 0 : err;
}
}
if (! keep_handle) {
snd_ctl_close(handle);
handle = NULL;
}
if (!quiet) {
snd_hctl_t *hctl;
snd_hctl_elem_t *elem;
if ((err = snd_hctl_open(&hctl, card, 0)) < 0) {
error("Control %s open error: %s\n", card, snd_strerror(err));
return err;
}
if ((err = snd_hctl_load(hctl)) < 0) {
error("Control %s load error: %s\n", card, snd_strerror(err));
return err;
}
elem = snd_hctl_find_elem(hctl, id);
if (elem)
show_control(" ", elem, LEVEL_BASIC | LEVEL_ID);
else
printf("Could not find the specified element\n");
snd_hctl_close(hctl);
}
return 0;
}
typedef struct channel_mask {
char *name;
unsigned int mask;
} channel_mask_t;
static const channel_mask_t chanmask[] = {
{"frontleft", 1 << SND_MIXER_SCHN_FRONT_LEFT},
{"frontright", 1 << SND_MIXER_SCHN_FRONT_RIGHT},
{"frontcenter", 1 << SND_MIXER_SCHN_FRONT_CENTER},
{"front", ((1 << SND_MIXER_SCHN_FRONT_LEFT) |
(1 << SND_MIXER_SCHN_FRONT_RIGHT))},
{"center", 1 << SND_MIXER_SCHN_FRONT_CENTER},
{"rearleft", 1 << SND_MIXER_SCHN_REAR_LEFT},
{"rearright", 1 << SND_MIXER_SCHN_REAR_RIGHT},
{"rear", ((1 << SND_MIXER_SCHN_REAR_LEFT) |
(1 << SND_MIXER_SCHN_REAR_RIGHT))},
{"woofer", 1 << SND_MIXER_SCHN_WOOFER},
{NULL, 0}
};
static unsigned int channels_mask(char **arg, unsigned int def)
{
const channel_mask_t *c;
for (c = chanmask; c->name; c++) {
if (strncasecmp(*arg, c->name, strlen(c->name)) == 0) {
while (**arg != '\0' && **arg != ',' && **arg != ' ' && **arg != '\t')
(*arg)++;
if (**arg == ',' || **arg == ' ' || **arg == '\t')
(*arg)++;
return c->mask;
}
}
return def;
}
static unsigned int dir_mask(char **arg, unsigned int def)
{
int findend = 0;
if (strncasecmp(*arg, "playback", 8) == 0)
def = findend = 1;
else if (strncasecmp(*arg, "capture", 8) == 0)
def = findend = 2;
if (findend) {
while (**arg != '\0' && **arg != ',' && **arg != ' ' && **arg != '\t')
(*arg)++;
if (**arg == ',' || **arg == ' ' || **arg == '\t')
(*arg)++;
}
return def;
}
static int get_enum_item_index(snd_mixer_elem_t *elem, char **ptrp)
{
char *ptr = *ptrp;
int items, i, len;
/* See snd_ctl_elem_init_enum_names() in sound/core/control.c. */
char name[64];
items = snd_mixer_selem_get_enum_items(elem);
if (items <= 0)
return -1;
for (i = 0; i < items; i++) {
if (snd_mixer_selem_get_enum_item_name(elem, i, sizeof(name)-1, name) < 0)
continue;
len = strlen(name);
if (! strncmp(name, ptr, len)) {
if (! ptr[len] || ptr[len] == ',' || ptr[len] == '\n') {
ptr += len;
*ptrp = ptr;
return i;
}
}
}
return -1;
}
static int sset_enum(snd_mixer_elem_t *elem, unsigned int argc, char **argv)
{
unsigned int idx, item = 0;
int check_flag = ignore_error ? 0 : -1;
for (idx = 1; idx < argc; idx++) {
char *ptr = argv[idx];
while (*ptr) {
int ival = get_enum_item_index(elem, &ptr);
if (ival < 0)
return check_flag;
if (snd_mixer_selem_set_enum_item(elem, item++, ival) >= 0)
check_flag = 1;
/* skip separators */
while (*ptr == ',' || isspace(*ptr))
ptr++;
}
}
return check_flag;
}
static int sset_channels(snd_mixer_elem_t *elem, unsigned int argc, char **argv)
{
unsigned int channels = ~0U;
unsigned int dir = 3, okflag = 3;
unsigned int idx;
snd_mixer_selem_channel_id_t chn;
int check_flag = ignore_error ? 0 : -1;
for (idx = 1; idx < argc; idx++) {
char *ptr = argv[idx], *optr;
int multi, firstchn = 1;
channels = channels_mask(&ptr, channels);
if (*ptr == '\0')
continue;
dir = dir_mask(&ptr, dir);
if (*ptr == '\0')
continue;
multi = (strchr(ptr, ',') != NULL);
optr = ptr;
for (chn = 0; chn <= SND_MIXER_SCHN_LAST; chn++) {
char *sptr = NULL;
int ival;
if (!(channels & (1 << chn)))
continue;
if ((dir & 1) && snd_mixer_selem_has_playback_channel(elem, chn)) {
sptr = ptr;
if (!strncmp(ptr, "mute", 4) && snd_mixer_selem_has_playback_switch(elem)) {
snd_mixer_selem_get_playback_switch(elem, chn, &ival);
if (snd_mixer_selem_set_playback_switch(elem, chn, get_bool_simple(&ptr, "mute", 1, ival)) >= 0)
check_flag = 1;
} else if (!strncmp(ptr, "off", 3) && snd_mixer_selem_has_playback_switch(elem)) {
snd_mixer_selem_get_playback_switch(elem, chn, &ival);
if (snd_mixer_selem_set_playback_switch(elem, chn, get_bool_simple(&ptr, "off", 1, ival)) >= 0)
check_flag = 1;
} else if (!strncmp(ptr, "unmute", 6) && snd_mixer_selem_has_playback_switch(elem)) {
snd_mixer_selem_get_playback_switch(elem, chn, &ival);
if (snd_mixer_selem_set_playback_switch(elem, chn, get_bool_simple(&ptr, "unmute", 0, ival)) >= 0)
check_flag = 1;
} else if (!strncmp(ptr, "on", 2) && snd_mixer_selem_has_playback_switch(elem)) {
snd_mixer_selem_get_playback_switch(elem, chn, &ival);
if (snd_mixer_selem_set_playback_switch(elem, chn, get_bool_simple(&ptr, "on", 0, ival)) >= 0)
check_flag = 1;
} else if (!strncmp(ptr, "toggle", 6) && snd_mixer_selem_has_playback_switch(elem)) {
if (firstchn || !snd_mixer_selem_has_playback_switch_joined(elem)) {
snd_mixer_selem_get_playback_switch(elem, chn, &ival);
if (snd_mixer_selem_set_playback_switch(elem, chn, (ival ? 1 : 0) ^ 1) >= 0)
check_flag = 1;
}
simple_skip_word(&ptr, "toggle");
} else if (isdigit(*ptr) || *ptr == '-' || *ptr == '+') {
if (set_volume_simple(elem, chn, &ptr, 0) >= 0)
check_flag = 1;
} else if (simple_skip_word(&ptr, "cap") || simple_skip_word(&ptr, "rec") ||
simple_skip_word(&ptr, "nocap") || simple_skip_word(&ptr, "norec")) {
/* nothing */
} else {
okflag &= ~1;
}
}
if ((dir & 2) && snd_mixer_selem_has_capture_channel(elem, chn)) {
if (sptr != NULL)
ptr = sptr;
sptr = ptr;
if (!strncmp(ptr, "cap", 3) && snd_mixer_selem_has_capture_switch(elem)) {
snd_mixer_selem_get_capture_switch(elem, chn, &ival);
if (snd_mixer_selem_set_capture_switch(elem, chn, get_bool_simple(&ptr, "cap", 0, ival)) >= 0)
check_flag = 1;
} else if (!strncmp(ptr, "rec", 3) && snd_mixer_selem_has_capture_switch(elem)) {
snd_mixer_selem_get_capture_switch(elem, chn, &ival);
if (snd_mixer_selem_set_capture_switch(elem, chn, get_bool_simple(&ptr, "rec", 0, ival)) >= 0)
check_flag = 1;
} else if (!strncmp(ptr, "nocap", 5) && snd_mixer_selem_has_capture_switch(elem)) {
snd_mixer_selem_get_capture_switch(elem, chn, &ival);
if (snd_mixer_selem_set_capture_switch(elem, chn, get_bool_simple(&ptr, "nocap", 1, ival)) >= 0)
check_flag = 1;
} else if (!strncmp(ptr, "norec", 5) && snd_mixer_selem_has_capture_switch(elem)) {
snd_mixer_selem_get_capture_switch(elem, chn, &ival);
if (snd_mixer_selem_set_capture_switch(elem, chn, get_bool_simple(&ptr, "norec", 1, ival)) >= 0)
check_flag = 1;
} else if (!strncmp(ptr, "toggle", 6) && snd_mixer_selem_has_capture_switch(elem)) {
if (firstchn || !snd_mixer_selem_has_capture_switch_joined(elem)) {
snd_mixer_selem_get_capture_switch(elem, chn, &ival);
if (snd_mixer_selem_set_capture_switch(elem, chn, (ival ? 1 : 0) ^ 1) >= 0)
check_flag = 1;
}
simple_skip_word(&ptr, "toggle");
} else if (isdigit(*ptr) || *ptr == '-' || *ptr == '+') {
if (set_volume_simple(elem, chn, &ptr, 1) >= 0)
check_flag = 1;
} else if (simple_skip_word(&ptr, "mute") || simple_skip_word(&ptr, "off") ||
simple_skip_word(&ptr, "unmute") || simple_skip_word(&ptr, "on")) {
/* nothing */
} else {
okflag &= ~2;
}
}
if (okflag == 0) {
if (debugflag) {
if (dir & 1)
error("Unknown playback setup '%s'..", ptr);
if (dir & 2)
error("Unknown capture setup '%s'..", ptr);
}
return 0; /* just skip it */
}
if (!multi)
ptr = optr;
firstchn = 0;
}
}
return check_flag;
}
static int sset(unsigned int argc, char *argv[], int roflag, int keep_handle)
{
int err = 0;
static snd_mixer_t *handle = NULL;
snd_mixer_elem_t *elem;
snd_mixer_selem_id_t *sid;
snd_mixer_selem_id_alloca(&sid);
if (argc < 1) {
fprintf(stderr, "Specify a scontrol identifier: 'name',index\n");
return 1;
}
if (parse_simple_id(argv[0], sid)) {
fprintf(stderr, "Wrong scontrol identifier: %s\n", argv[0]);
return 1;
}
if (!roflag && argc < 2) {
fprintf(stderr, "Specify what you want to set...\n");
return 1;
}
if (handle == NULL) {
if ((err = snd_mixer_open(&handle, 0)) < 0) {
error("Mixer %s open error: %s\n", card, snd_strerror(err));
return err;
}
if (smixer_level == 0 && (err = snd_mixer_attach(handle, card)) < 0) {
error("Mixer attach %s error: %s", card, snd_strerror(err));
snd_mixer_close(handle);
handle = NULL;
return err;
}
if ((err = snd_mixer_selem_register(handle, smixer_level > 0 ? &smixer_options : NULL, NULL)) < 0) {
error("Mixer register error: %s", snd_strerror(err));
snd_mixer_close(handle);
handle = NULL;
return err;
}
err = snd_mixer_load(handle);
if (err < 0) {
error("Mixer %s load error: %s", card, snd_strerror(err));
snd_mixer_close(handle);
handle = NULL;
return err;
}
}
elem = snd_mixer_find_selem(handle, sid);
if (!elem) {
if (ignore_error)
return 0;
error("Unable to find simple control '%s',%i\n", snd_mixer_selem_id_get_name(sid), snd_mixer_selem_id_get_index(sid));
snd_mixer_close(handle);
handle = NULL;
return -ENOENT;
}
if (!roflag) {
/* enum control */
if (snd_mixer_selem_is_enumerated(elem))
err = sset_enum(elem, argc, argv);
else
err = sset_channels(elem, argc, argv);
if (!err)
goto done;
if (err < 0) {
error("Invalid command!");
goto done;
}
}
if (!quiet) {
printf("Simple mixer control '%s',%i\n", snd_mixer_selem_id_get_name(sid), snd_mixer_selem_id_get_index(sid));
show_selem(handle, sid, " ", 1);
}
done:
if (! keep_handle) {
snd_mixer_close(handle);
handle = NULL;
}
return err < 0 ? 1 : 0;
}
static void events_info(snd_hctl_elem_t *helem)
{
snd_ctl_elem_id_t *id;
snd_ctl_elem_id_alloca(&id);
snd_hctl_elem_get_id(helem, id);
printf("event info: ");
show_control_id(id);
printf("\n");
}
static void events_value(snd_hctl_elem_t *helem)
{
snd_ctl_elem_id_t *id;
snd_ctl_elem_id_alloca(&id);
snd_hctl_elem_get_id(helem, id);
printf("event value: ");
show_control_id(id);
printf("\n");
}
static void events_remove(snd_hctl_elem_t *helem)
{
snd_ctl_elem_id_t *id;
snd_ctl_elem_id_alloca(&id);
snd_hctl_elem_get_id(helem, id);
printf("event remove: ");
show_control_id(id);
printf("\n");
}
static int element_callback(snd_hctl_elem_t *elem, unsigned int mask)
{
if (mask == SND_CTL_EVENT_MASK_REMOVE) {
events_remove(elem);
return 0;
}
if (mask & SND_CTL_EVENT_MASK_INFO)
events_info(elem);
if (mask & SND_CTL_EVENT_MASK_VALUE)
events_value(elem);
return 0;
}
static void events_add(snd_hctl_elem_t *helem)
{
snd_ctl_elem_id_t *id;
snd_ctl_elem_id_alloca(&id);
snd_hctl_elem_get_id(helem, id);
printf("event add: ");
show_control_id(id);
printf("\n");
snd_hctl_elem_set_callback(helem, element_callback);
}
static int ctl_callback(snd_hctl_t *ctl, unsigned int mask,
snd_hctl_elem_t *elem)
{
if (mask & SND_CTL_EVENT_MASK_ADD)
events_add(elem);
return 0;
}
static int events(int argc ATTRIBUTE_UNUSED, char *argv[] ATTRIBUTE_UNUSED)
{
snd_hctl_t *handle;
snd_hctl_elem_t *helem;
int err;
if ((err = snd_hctl_open(&handle, card, 0)) < 0) {
error("Control %s open error: %s\n", card, snd_strerror(err));
return err;
}
snd_hctl_set_callback(handle, ctl_callback);
if ((err = snd_hctl_load(handle)) < 0) {
error("Control %s hbuild error: %s\n", card, snd_strerror(err));
return err;
}
for (helem = snd_hctl_first_elem(handle); helem; helem = snd_hctl_elem_next(helem)) {
snd_hctl_elem_set_callback(helem, element_callback);
}
printf("Ready to listen...\n");
while (1) {
int res = snd_hctl_wait(handle, -1);
if (res >= 0) {
printf("Poll ok: %i\n", res);
res = snd_hctl_handle_events(handle);
assert(res > 0);
}
}
snd_hctl_close(handle);
return 0;
}
static void sevents_value(snd_mixer_selem_id_t *sid)
{
printf("event value: '%s',%i\n", snd_mixer_selem_id_get_name(sid), snd_mixer_selem_id_get_index(sid));
}
static void sevents_info(snd_mixer_selem_id_t *sid)
{
printf("event info: '%s',%i\n", snd_mixer_selem_id_get_name(sid), snd_mixer_selem_id_get_index(sid));
}
static void sevents_remove(snd_mixer_selem_id_t *sid)
{
printf("event remove: '%s',%i\n", snd_mixer_selem_id_get_name(sid), snd_mixer_selem_id_get_index(sid));
}
static int melem_event(snd_mixer_elem_t *elem, unsigned int mask)
{
snd_mixer_selem_id_t *sid;
snd_mixer_selem_id_alloca(&sid);
snd_mixer_selem_get_id(elem, sid);
if (mask == SND_CTL_EVENT_MASK_REMOVE) {
sevents_remove(sid);
return 0;
}
if (mask & SND_CTL_EVENT_MASK_INFO)
sevents_info(sid);
if (mask & SND_CTL_EVENT_MASK_VALUE)
sevents_value(sid);
return 0;
}
static void sevents_add(snd_mixer_elem_t *elem)
{
snd_mixer_selem_id_t *sid;
snd_mixer_selem_id_alloca(&sid);
snd_mixer_selem_get_id(elem, sid);
printf("event add: '%s',%i\n", snd_mixer_selem_id_get_name(sid), snd_mixer_selem_id_get_index(sid));
snd_mixer_elem_set_callback(elem, melem_event);
}
static int mixer_event(snd_mixer_t *mixer, unsigned int mask,
snd_mixer_elem_t *elem)
{
if (mask & SND_CTL_EVENT_MASK_ADD)
sevents_add(elem);
return 0;
}
static int sevents(int argc ATTRIBUTE_UNUSED, char *argv[] ATTRIBUTE_UNUSED)
{
snd_mixer_t *handle;
int err;
if ((err = snd_mixer_open(&handle, 0)) < 0) {
error("Mixer %s open error: %s", card, snd_strerror(err));
return err;
}
if (smixer_level == 0 && (err = snd_mixer_attach(handle, card)) < 0) {
error("Mixer attach %s error: %s", card, snd_strerror(err));
snd_mixer_close(handle);
return err;
}
if ((err = snd_mixer_selem_register(handle, smixer_level > 0 ? &smixer_options : NULL, NULL)) < 0) {
error("Mixer register error: %s", snd_strerror(err));
snd_mixer_close(handle);
return err;
}
snd_mixer_set_callback(handle, mixer_event);
err = snd_mixer_load(handle);
if (err < 0) {
error("Mixer %s load error: %s", card, snd_strerror(err));
snd_mixer_close(handle);
return err;
}
printf("Ready to listen...\n");
while (1) {
int res;
res = snd_mixer_wait(handle, -1);
if (res >= 0) {
printf("Poll ok: %i\n", res);
res = snd_mixer_handle_events(handle);
assert(res >= 0);
}
}
snd_mixer_close(handle);
return 0;
}
/*
* split a line into tokens
* the content in the line buffer is modified
*/
static int split_line(char *buf, char **token, int max_token)
{
char *dst;
int n, esc, quote;
for (n = 0; n < max_token; n++) {
while (isspace(*buf))
buf++;
if (! *buf || *buf == '\n')
return n;
/* skip comments */
if (*buf == '#' || *buf == '!')
return n;
esc = 0;
quote = 0;
token[n] = buf;
for (dst = buf; *buf && *buf != '\n'; buf++) {
if (esc)
esc = 0;
else if (isspace(*buf) && !quote) {
buf++;
break;
} else if (*buf == '\\') {
esc = 1;
continue;
} else if (*buf == '\'' || *buf == '"') {
if (! quote) {
quote = *buf;
continue;
} else if (*buf == quote) {
quote = 0;
continue;
}
}
*dst++ = *buf;
}
*dst = 0;
}
return n;
}
#define MAX_ARGS 32
static int exec_stdin(void)
{
int narg;
char buf[256], *args[MAX_ARGS];
int err = 0;
/* quiet = 1; */
ignore_error = 1;
while (fgets(buf, sizeof(buf), stdin)) {
narg = split_line(buf, args, MAX_ARGS);
if (narg > 0) {
if (!strcmp(args[0], "sset") || !strcmp(args[0], "set"))
err = sset(narg - 1, args + 1, 0, 1);
else if (!strcmp(args[0], "cset"))
err = cset(narg - 1, args + 1, 0, 1);
if (err < 0)
return 1;
}
}
return 0;
}
int main(int argc, char *argv[])
{
int morehelp, level = 0;
int read_stdin = 0;
static const struct option long_option[] =
{
{"help", 0, NULL, 'h'},
{"card", 1, NULL, 'c'},
{"device", 1, NULL, 'D'},
{"quiet", 0, NULL, 'q'},
{"inactive", 0, NULL, 'i'},
{"debug", 0, NULL, 'd'},
{"nocheck", 0, NULL, 'n'},
{"version", 0, NULL, 'v'},
{"abstract", 1, NULL, 'a'},
{"stdin", 0, NULL, 's'},
{"raw-volume", 0, NULL, 'R'},
{"mapped-volume", 0, NULL, 'M'},
{NULL, 0, NULL, 0},
};
morehelp = 0;
while (1) {
int c;
if ((c = getopt_long(argc, argv, "hc:D:qidnva:sRM", long_option, NULL)) < 0)
break;
switch (c) {
case 'h':
help();
return 0;
case 'c':
{
int i;
i = snd_card_get_index(optarg);
if (i >= 0 && i < 32)
sprintf(card, "hw:%i", i);
else {
fprintf(stderr, "Invalid card number.\n");
morehelp++;
}
}
break;
case 'D':
strncpy(card, optarg, sizeof(card)-1);
card[sizeof(card)-1] = '\0';
break;
case 'q':
quiet = 1;
break;
case 'i':
level |= LEVEL_INACTIVE;
break;
case 'd':
debugflag = 1;
break;
case 'n':
no_check = 1;
break;
case 'v':
printf("amixer version " SND_UTIL_VERSION_STR "\n");
return 1;
case 'a':
smixer_level = 1;
memset(&smixer_options, 0, sizeof(smixer_options));
smixer_options.ver = 1;
if (!strcmp(optarg, "none"))
smixer_options.abstract = SND_MIXER_SABSTRACT_NONE;
else if (!strcmp(optarg, "basic"))
smixer_options.abstract = SND_MIXER_SABSTRACT_BASIC;
else {
fprintf(stderr, "Select correct abstraction level (none or basic)...\n");
morehelp++;
}
break;
case 's':
read_stdin = 1;
break;
case 'R':
std_vol_type = VOL_RAW;
break;
case 'M':
std_vol_type = VOL_MAP;
break;
default:
fprintf(stderr, "Invalid switch or option needs an argument.\n");
morehelp++;
}
}
if (morehelp) {
help();
return 1;
}
smixer_options.device = card;
if (read_stdin)
return exec_stdin();
if (argc - optind <= 0) {
return selems(LEVEL_BASIC | level) ? 1 : 0;
}
if (!strcmp(argv[optind], "help")) {
return help() ? 1 : 0;
} else if (!strcmp(argv[optind], "info")) {
return info() ? 1 : 0;
} else if (!strcmp(argv[optind], "controls")) {
return controls(level) ? 1 : 0;
} else if (!strcmp(argv[optind], "contents")) {
return controls(LEVEL_BASIC | level) ? 1 : 0;
} else if (!strcmp(argv[optind], "scontrols") || !strcmp(argv[optind], "simple")) {
return selems(level) ? 1 : 0;
} else if (!strcmp(argv[optind], "scontents")) {
return selems(LEVEL_BASIC | level) ? 1 : 0;
} else if (!strcmp(argv[optind], "sset") || !strcmp(argv[optind], "set")) {
return sset(argc - optind - 1, argc - optind > 1 ? argv + optind + 1 : NULL, 0, 0) ? 1 : 0;
} else if (!strcmp(argv[optind], "sget") || !strcmp(argv[optind], "get")) {
return sset(argc - optind - 1, argc - optind > 1 ? argv + optind + 1 : NULL, 1, 0) ? 1 : 0;
} else if (!strcmp(argv[optind], "cset")) {
return cset(argc - optind - 1, argc - optind > 1 ? argv + optind + 1 : NULL, 0, 0) ? 1 : 0;
} else if (!strcmp(argv[optind], "cget")) {
return cset(argc - optind - 1, argc - optind > 1 ? argv + optind + 1 : NULL, 1, 0) ? 1 : 0;
} else if (!strcmp(argv[optind], "events")) {
return events(argc - optind - 1, argc - optind > 1 ? argv + optind + 1 : NULL);
} else if (!strcmp(argv[optind], "sevents")) {
return sevents(argc - optind - 1, argc - optind > 1 ? argv + optind + 1 : NULL);
} else {
fprintf(stderr, "amixer: Unknown command '%s'...\n", argv[optind]);
}
return 0;
}
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