static void change_enum_to_percent(struct control *control, int value)
{
unsigned int i;
unsigned int index;
unsigned int new_index;
int items;
int err;
i = ffs(control->enum_channel_bits) - 1;
err = snd_mixer_selem_get_enum_item(control->elem, i, &index);
if (err < 0)
return;
new_index = index;
if (value == 0) {
new_index = 0;
} else if (value == 100) {
items = snd_mixer_selem_get_enum_items(control->elem);
if (items < 1)
return;
new_index = items - 1;
}
if (new_index == index)
return;
for (i = 0; i <= SND_MIXER_SCHN_LAST; ++i)
if (control->enum_channel_bits & (1 << i))
snd_mixer_selem_set_enum_item(control->elem, i, new_index);
}
static void change_enum_relative(struct control *control, int delta)
{
int items;
unsigned int i;
unsigned int index;
int new_index;
int err;
items = snd_mixer_selem_get_enum_items(control->elem);
if (items < 1)
return;
err = snd_mixer_selem_get_enum_item(control->elem, 0, &index);
if (err < 0)
return;
new_index = (int)index + delta;
if (new_index < 0)
new_index = 0;
else if (new_index >= items)
new_index = items - 1;
if (new_index == index)
return;
for (i = 0; i <= SND_MIXER_SCHN_LAST; ++i)
if (control->enum_channel_bits & (1 << i))
snd_mixer_selem_set_enum_item(control->elem, i, new_index);
}
/*
* The purpose of this function is to let the user to select
* the input where he plugged his signals.
* Now if user select "default", as device, we have to select the input
* on the mixer of the card used by "default".
* What is the card used by device "default" ?
*/
static void
as_setup_input_combo (GtkWidget *combo, SoundParams *sparams)
{
snd_mixer_t *handle;
int i ;
snd_mixer_selem_id_t *sid;
snd_mixer_elem_t *elem;
snd_mixer_selem_id_alloca(&sid);
char *devname;
char name[32];
devname = sparams->device_name;
if ( *sparams->indexstr == '-' ) {
sprintf(name, "hw:%d", sparams->firstcard);
devname = name;
}
handle = sound_open_mixer(devname);
if ( handle == NULL ){
return ;
}
for (elem = snd_mixer_first_elem(handle); elem; elem = snd_mixer_elem_next(elem)) {
snd_mixer_selem_get_id(elem, sid);
if (! snd_mixer_selem_is_active(elem)) {
continue;
}
const char *control_name = snd_mixer_selem_id_get_name(sid);
// printf("Simple mixer control '%s',%i\n", control_name, snd_mixer_selem_id_get_index(sid));
if (snd_mixer_selem_is_enum_capture(elem)) {
int items;
char itemname[40];
app_free(sparams->control_name);
sparams->control_name = app_strdup(control_name);
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);
gtk_combo_box_text_append_text (GTK_COMBO_BOX_TEXT (combo), itemname );
if ( i == sparams->input ) {
gtk_combo_box_set_active (GTK_COMBO_BOX (combo), i);
}
}
// printf("\n");
}
}
snd_mixer_close(handle);
return ;
}
EnumBox *lamixer_enumbox_add(const gchar *str, snd_mixer_elem_t *elem, guint voltype)
{
EnumBox *enumbox;
enumbox = g_malloc(sizeof(EnumBox));
enumbox->type = voltype;
enumbox->volelem = elem;
enumbox->enumhbox = gtk_hbox_new(FALSE,0);
enumbox->enumname = gtk_label_new(str);
enumbox->enumswitch = gtk_combo_box_new_text();
int enumsCnt = snd_mixer_selem_get_enum_items(elem);
for(int i=0; i<enumsCnt; i++) {
char iname[256];
snd_mixer_selem_get_enum_item_name(elem, i, sizeof(iname), iname);
gtk_combo_box_append_text (GTK_COMBO_BOX (enumbox->enumswitch), iname);
}
gtk_box_pack_start(GTK_BOX(enumbox->enumhbox), enumbox->enumname, FALSE, FALSE, 0);
gtk_box_pack_start(GTK_BOX(enumbox->enumhbox), enumbox->enumswitch, FALSE, FALSE, 0);
return enumbox;
}
GstMixerOptions *
gst_alsa_mixer_options_new (snd_mixer_elem_t * element, gint track_num)
{
GstMixerOptions *opts;
GstAlsaMixerOptions *alsa_opts;
GstMixerTrack *track;
const gchar *label;
gint num, i;
gchar str[256];
label = snd_mixer_selem_get_name (element);
opts = g_object_new (GST_ALSA_MIXER_OPTIONS_TYPE,
"untranslated-label", label, NULL);
alsa_opts = (GstAlsaMixerOptions *) opts;
track = (GstMixerTrack *) opts;
/* set basic information */
track->label = g_strdup (label); /* FIXME: translate this? */
track->num_channels = 0;
track->flags = 0;
alsa_opts->element = element;
alsa_opts->track_num = track_num;
/* get enumerations for switch/options object */
num = snd_mixer_selem_get_enum_items (element);
for (i = 0; i < num; i++) {
if (snd_mixer_selem_get_enum_item_name (element, i, 255, str) < 0) {
g_object_unref (G_OBJECT (alsa_opts));
return NULL;
}
opts->values = g_list_append (opts->values, g_strdup (str));
}
return opts;
}
