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// Take a look at the license at the top of the repository in the LICENSE file.

use std::ptr;

use glib::{prelude::*, translate::*};

use crate::{ffi, RTSPAddress, RTSPAddressPool, RTSPAddressPoolResult};

mod sealed {
    pub trait Sealed {}
    impl<T: super::IsA<super::RTSPAddressPool>> Sealed for T {}
}

pub trait RTSPAddressPoolExtManual: sealed::Sealed + IsA<RTSPAddressPool> + 'static {
    /// Take a specific address and ports from `self`. `n_ports` consecutive
    /// ports will be allocated of which the first one can be found in
    /// `port`.
    ///
    /// If `ttl` is 0, `address` should be a unicast address. If `ttl` > 0, `address`
    /// should be a valid multicast address.
    /// ## `ip_address`
    /// The IP address to reserve
    /// ## `port`
    /// The first port to reserve
    /// ## `n_ports`
    /// The number of ports
    /// ## `ttl`
    /// The requested ttl
    ///
    /// # Returns
    ///
    /// [`RTSPAddressPoolResult::Ok`][crate::RTSPAddressPoolResult::Ok] if an address was reserved. The address
    /// is returned in `address` and should be freed with gst_rtsp_address_free
    /// after use.
    ///
    /// ## `address`
    /// storage for a [`RTSPAddress`][crate::RTSPAddress]
    #[doc(alias = "gst_rtsp_address_pool_reserve_address")]
    fn reserve_address(
        &self,
        ip_address: &str,
        port: u32,
        n_ports: u32,
        ttl: u32,
    ) -> Result<RTSPAddress, RTSPAddressPoolResult> {
        unsafe {
            let mut address = ptr::null_mut();
            let ret = from_glib(ffi::gst_rtsp_address_pool_reserve_address(
                self.as_ref().to_glib_none().0,
                ip_address.to_glib_none().0,
                port,
                n_ports,
                ttl,
                &mut address,
            ));
            match ret {
                RTSPAddressPoolResult::Ok => Ok(from_glib_full(address)),
                _ => Err(ret),
            }
        }
    }
}

impl<O: IsA<RTSPAddressPool>> RTSPAddressPoolExtManual for O {}