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// Copyright (C) 2018 Sebastian Dröge <sebastian@centricular.com>
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.

use ffi;
use PtpClock;

use glib::object::Downcast;
use glib::translate::*;
use gst;

impl PtpClock {
    /// Creates a new PTP clock instance that exports the PTP time of the master
    /// clock in `domain`. This clock can be slaved to other clocks as needed.
    ///
    /// If `gst_ptp_init` was not called before, this will call `gst_ptp_init` with
    /// default parameters.
    ///
    /// This clock only returns valid timestamps after it received the first
    /// times from the PTP master clock on the network. Once this happens the
    /// GstPtpClock::internal-clock property will become non-NULL. You can
    /// check this with `gst::ClockExt::wait_for_sync`, the GstClock::synced signal and
    /// `gst::ClockExt::is_synced`.
    /// ## `name`
    /// Name of the clock
    /// ## `domain`
    /// PTP domain
    ///
    /// # Returns
    ///
    /// A new `gst::Clock`
    pub fn new<'a, P: Into<Option<&'a str>>>(
        name: P,
        remote_address: &str,
        remote_port: i32,
        base_time: gst::ClockTime,
    ) -> PtpClock {
        assert_initialized_main_thread!();
        let name = name.into();
        let name = name.to_glib_none();
        let (major, minor, _, _) = gst::version();
        if (major, minor) > (1, 12) {
            unsafe {
                gst::Clock::from_glib_full(ffi::gst_ntp_clock_new(
                    name.0,
                    remote_address.to_glib_none().0,
                    remote_port,
                    base_time.to_glib(),
                )).downcast_unchecked()
            }
        } else {
            // Workaround for bad floating reference handling in 1.12. This issue was fixed for 1.13
            unsafe {
                gst::Clock::from_glib_none(ffi::gst_ntp_clock_new(
                    name.0,
                    remote_address.to_glib_none().0,
                    remote_port,
                    base_time.to_glib(),
                )).downcast_unchecked()
            }
        }
    }
}