/*----------------------------------------------------------------
// Copyright (C) 2025 Beijing All rights reserved.
//
// Author: huachangmiao
// Create Date: 2025/04/11
// Module Describe:
//----------------------------------------------------------------*/
using System;
using Unity.Collections.LowLevel.Unsafe;

namespace LeviathanVideo.Abstractions
{

    public static partial class leviathan
    {
#if UNITY_EDITOR_OSX || UNITY_STANDALONE_OSX || UNITY_IOS
        public static readonly int EAGAIN = 35;
        public static readonly int ENOMEM = 12;
        public static readonly int EINVAL = 22;
#elif UNITY_WEBGL && !UNITY_EDITOR
        public static readonly int EAGAIN = 6;
        public static readonly int ENOMEM = 48;
        public static readonly int EINVAL = 28;
#else
        public static readonly int EAGAIN = 11;
        public static readonly int ENOMEM = 12;
        public static readonly int EINVAL = 22;
#endif

        // public static readonly int EPIPE = 32;

        public static ulong UINT64_C<T>(T a)
            => Convert.ToUInt64(a);

        public static int AVERROR_Enum<T1>(T1 a) where T1 : struct, IConvertible => -UnsafeUtility.EnumToInt(a);
        
        public static int AVERROR<T1>(T1 a)
            => -Convert.ToInt32(a);

        public static int MKTAG<T1, T2, T3, T4>(T1 a, T2 b, T3 c, T4 d)
            => (int)(Convert.ToUInt32(a) | (Convert.ToUInt32(b) << 8) | (Convert.ToUInt32(c) << 16) |
                     (Convert.ToUInt32(d) << 24));

        public static int FFERRTAG<T1, T2, T3, T4>(T1 a, T2 b, T3 c, T4 d)
            => -MKTAG(a, b, c, d);

        public static int AV_VERSION_INT<T1, T2, T3>(T1 a, T2 b, T3 c) =>
            (Convert.ToInt32(a) << 16) | (Convert.ToInt32(b) << 8) | Convert.ToInt32(c);

        public static string AV_VERSION_DOT<T1, T2, T3>(T1 a, T2 b, T3 c)
            => $"{a}.{b}.{c}";

        public static string AV_VERSION<T1, T2, T3>(T1 a, T2 b, T3 c)
            => AV_VERSION_DOT(a, b, c);
    }
}