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Add meter/level display

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This commit is contained in:
Geoffrey D. Bennett
2022-08-09 01:23:31 +09:30
parent 38edefb93e
commit d96ced2b45
4 changed files with 21 additions and 5 deletions
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14
src/window-levels.c
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@@ -24,7 +24,17 @@ static int update_levels_controls(void *user_data) {
// go through the ports in that category
for (int j = 0; j < card->routing_out_count[i]; j++) {
GtkWidget *meter = card->meters[meter_num];
gtk_dial_set_value(GTK_DIAL(meter), values[meter_num]);
double value = 20 * log10(values[meter_num] / 4095.0);
int int_value;
if (value < -80)
int_value = -80;
else if (value > 0)
int_value = 0;
else
int_value = round(value);
gtk_dial_set_value(GTK_DIAL(meter), int_value);
meter_num++;
}
}
@@ -93,7 +103,7 @@ GtkWidget *create_levels_controls(struct alsa_card *card) {
count_labels[j] = add_count_label(grid, j);
// create the meter widget and attach to the grid
GtkWidget *meter = gtk_dial_new_with_range(0, 4096, 1);
GtkWidget *meter = gtk_dial_new_with_range(-80, 0, 1);
card->meters[meter_num++] = meter;
gtk_grid_attach(GTK_GRID(grid), meter, j + 1, i + 1, 1, 1);
}