Function stream_settings_line 

pub(crate) fn stream_settings_line(
    tag: &str,
    settings: &CaptureSettings,
    n_stripes: usize,
    backend: Option<(&str, bool)>,
    fixed_rate: Option<&str>,
    holds: bool,
    capped: bool,
    fullcolor: bool,
    full_range: bool,
) -> String

The text of the “Stream settings active” line, which says what the session applies rather than what it was asked for (encoders::rate_desc, encoders::paint_over_desc).