Function libpulse_sys::context::introspect::pa_context_set_source_output_volume

pub unsafe extern "C" fn pa_context_set_source_output_volume(
    c: *mut pa_context, 
    idx: u32, 
    volume: *const pa_cvolume, 
    cb: pa_context_success_cb_t, 
    userdata: *mut c_void
) -> *mut pa_operation