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amixer: info: Add handling of a new components string #318

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64f84ec
amixer: some whitespace fixups
mstrozek Jan 22, 2026
4a0372c
amixer: info: Add handling of a new components string
mstrozek Jan 22, 2026
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7 changes: 6 additions & 1 deletion alsactl/info.c
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Original file line number Diff line number Diff line change
Expand Up @@ -193,10 +193,12 @@ static int hwdep_device_list(snd_ctl_t *ctl)
static int card_info(snd_ctl_t *ctl)
{
snd_ctl_card_info_t *info;
snd_ctl_card_components_t *components;
snd_ctl_elem_list_t *clist;
int err;

snd_ctl_card_info_alloca(&info);
snd_ctl_card_components_alloca(&components);
snd_ctl_elem_list_alloca(&clist);

if ((err = snd_ctl_card_info(ctl, info)) < 0) {
Expand All @@ -211,7 +213,10 @@ static int card_info(snd_ctl_t *ctl)
snd_ctl_card_info_get_longname(info));
printf(" driver_name: %s\n", snd_ctl_card_info_get_driver(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 (snd_ctl_card_components(ctl, components) >= 0)
printf(" components: %s\n", snd_ctl_card_components_get_string(components));
else
printf(" components: %s\n", snd_ctl_card_info_get_components(info));
if ((err = snd_ctl_elem_list(ctl, clist)) < 0) {
error("snd_ctl_elem_list failure: %s", snd_strerror(err));
} else {
Expand Down
47 changes: 26 additions & 21 deletions amixer/amixer.c
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Original file line number Diff line number Diff line change
Expand Up @@ -94,23 +94,28 @@ static int info(void)
snd_ctl_t *handle;
snd_mixer_t *mhandle;
snd_ctl_card_info_t *info;
snd_ctl_card_components_t *components;
snd_ctl_elem_list_t *clist;
snd_ctl_card_info_alloca(&info);
snd_ctl_card_components_alloca(&components);
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 (snd_ctl_card_components(handle, components) >= 0)
printf(" Components : '%s'\n", snd_ctl_card_components_get_string(components));
else
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 {
Expand Down Expand Up @@ -165,12 +170,12 @@ static const char *control_access(snd_ctl_elem_info_t *info)
}

#define check_range(val, min, max) \
(no_check ? (val) : ((val < min) ? (min) : (val > max) ? (max) : (val)))
(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));
Expand All @@ -181,7 +186,7 @@ static int convert_range(int val, int omin, int omax, int nmin, int nmax)
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);
Expand Down Expand Up @@ -220,7 +225,7 @@ struct volume_ops {
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 {
Expand Down Expand Up @@ -415,7 +420,7 @@ static int get_bool_simple(char **ptr, char *str, int invert, int orig)
(*ptr)++;
return orig;
}

static int simple_skip_word(char **ptr, char *str)
{
char *xptr = *ptr;
Expand All @@ -431,7 +436,7 @@ static int simple_skip_word(char **ptr, char *str)
}
return 0;
}

static void show_control_id(snd_ctl_elem_id_t *id)
{
char *str;
Expand Down Expand Up @@ -631,7 +636,7 @@ static int show_control(const char *space, snd_hctl_elem_t *elem,
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",
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));
Expand Down Expand Up @@ -732,7 +737,7 @@ static int controls(int level)
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;
Expand All @@ -758,7 +763,7 @@ static int controls(int level)
return 0;
}

static void show_selem_volume(snd_mixer_elem_t *elem,
static void show_selem_volume(snd_mixer_elem_t *elem,
snd_mixer_selem_channel_id_t chn, int dir,
long min, long max)
{
Expand Down Expand Up @@ -786,7 +791,7 @@ static int show_selem(snd_mixer_t *handle, snd_mixer_selem_id_t *id, const char
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);
Expand Down Expand Up @@ -917,11 +922,11 @@ static int show_selem(snd_mixer_t *handle, snd_mixer_selem_id_t *id, const char
printf("\n");
}
pmono = snd_mixer_selem_has_playback_channel(elem, SND_MIXER_SCHN_MONO) &&
(snd_mixer_selem_is_playback_mono(elem) ||
(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_is_capture_mono(elem) ||
(!snd_mixer_selem_has_capture_volume(elem) &&
!snd_mixer_selem_has_capture_switch(elem)));
#if 0
Expand Down Expand Up @@ -1053,7 +1058,7 @@ static int selems(int level)
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;
Expand Down Expand Up @@ -1290,7 +1295,7 @@ static int get_enum_item_index(snd_mixer_elem_t *elem, char **ptrp)

/* 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;
Expand Down Expand Up @@ -1563,9 +1568,9 @@ static int element_callback(snd_hctl_elem_t *elem, unsigned int mask)
events_remove(elem);
return 0;
}
if (mask & SND_CTL_EVENT_MASK_INFO)
if (mask & SND_CTL_EVENT_MASK_INFO)
events_info(elem);
if (mask & SND_CTL_EVENT_MASK_VALUE)
if (mask & SND_CTL_EVENT_MASK_VALUE)
events_value(elem);
return 0;
}
Expand Down Expand Up @@ -1645,9 +1650,9 @@ static int melem_event(snd_mixer_elem_t *elem, unsigned int mask)
sevents_remove(sid);
return 0;
}
if (mask & SND_CTL_EVENT_MASK_INFO)
if (mask & SND_CTL_EVENT_MASK_INFO)
sevents_info(sid);
if (mask & SND_CTL_EVENT_MASK_VALUE)
if (mask & SND_CTL_EVENT_MASK_VALUE)
sevents_value(sid);
return 0;
}
Expand Down