use crate::ffi;
pub fn av_get_channel_layout_nb_channels(channel_layout: u64) -> i32 {
unsafe { ffi::av_get_channel_layout_nb_channels(channel_layout) }
}
pub fn av_get_default_channel_layout(nb_channels: i32) -> u64 {
// From i64 to u64, safe.
unsafe { ffi::av_get_default_channel_layout(nb_channels) as u64 }
}