GstUnitConvert
conversion between units of measurement
@Returns:
@unitconv:
@from_unit_named:
@to_unit_named:
@Returns:
@unitconv:
@from_value:
@to_value:
@Returns:
@unit_name:
@Returns:
@unit_name:
@Returns:
@unit_name:
@Returns:
@domain_name:
@is_domain_default:
@is_logarithmic:
@unit_spec:
@Returns:
@from_unit_named:
@to_unit_named:
@convert_func:
@Returns:
@unit_name:
@convert_prop_spec:
@Returns: