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// Copyright (c) (2018-2022) Magic Leap, Inc. All Rights Reserved.
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using System;
using System.Runtime.InteropServices;
using UnityEngine.XR.MagicLeap.Native;

namespace UnityEngine.XR.MagicLeap
{
    /// <summary>
    /// API for converting between system and runtime clock timestamps.
    /// </summary>
    public partial class MLTime
    {
        /// <summary>
        /// Mirrors time.h's timespec struct, which is generated by clock_gettime()
        /// </summary>
        [StructLayout(LayoutKind.Sequential)]
        internal struct TimeSpec
        {
            public long Seconds;

            public long Nanoseconds;
        }
        
        /// <summary>
        /// See ml_time.h for additional comments.
        /// </summary>
        internal class NativeBindings : MagicLeapNativeBindings
        {
            [DllImport(MLPerceptionClientDll, CallingConvention = CallingConvention.Cdecl)]
            public static extern MLResult.Code MLTimeConvertSystemTimeToMLTime(IntPtr timeSpec, out long mlTime);

            [DllImport(MLPerceptionClientDll, CallingConvention = CallingConvention.Cdecl)]
            public static extern MLResult.Code MLTimeConvertMLTimeToSystemTime(long mlTime, IntPtr timeSpec);
        }
    }
}