FrostbiteTexture

/*
 * TextureHeader
 * Created by: kiwidog
 * With help from: MSDN
 * Copyright (c) kiwidoggie productions 2005-2014
 * Explicit Permission Given to D. Gintalas for use
 * Source, or any product using this class not to be sold or redistributed without direct written permission
*/

using System.Text;
using RimeLib.Frostbite.Core;
using RimeLib.IO;

namespace RimeLib.Frostbite.Content.Texture
{
    /// <summary>
    /// TextureHeader class
    /// The structure and some helper functions for the fb::TextureHeader class
    /// </summary>
    public class TextureHeader : IModifiable
    {
        public enum FLAGS : ushort
        {
            Streaming = 0x1,
            SrgbGamma = 0x2,
            CpuResource = 0x4,
            OnDemandLoaded = 0x8,
            Mutable = 0x10,
            NoSkipmip = 0x20,
            XenonPackedMipmaps = 0x100,
            Ps3MemoryCell = 0x100,
            Ps3MemoryRsx = 0x200,
        }


        public uint Version { get; set; }
        public uint Type { get; set; }
        public uint Format { get; set; }
        public uint Flags { get; set; }
        public short Width { get; set; }
        public short Height { get; set; }
        public short Depth { get; set; }
        public short SliceCount { get; set; }
        public short Unused0 { get; set; }
        public byte MipmapCount { get; set; }
        public byte MipmapBaseIndex { get; set; }
        public GUID StreamingChunkId { get; set; }
        public uint[] MipmapSizes { get; set; } // DWORD[15];
        public uint MipmapChainSize { get; set; }
        public uint ResourceNamehash { get; set; }
        public string TextureGroup { get; set; } // Len16
        public TextureHeader()
        {

        }

        /// <summary>
        /// TextureHeader Constructor
        /// This will read out the ITexture structure at an opened stream where the position is at a ITexture structure in the data
        /// </summary>
        /// <param name="reader">Reference to an IceReader class</param>
        public TextureHeader(RimeReader p_Reader)
        {
            Load(p_Reader);
        }

        public void Load(RimeReader p_Reader)
        {
            Version = p_Reader.ReadUInt32();
            Type = p_Reader.ReadUInt32();
            Format = p_Reader.ReadUInt32();
            Flags = p_Reader.ReadUInt32();
            Width = p_Reader.ReadInt16();
            Height = p_Reader.ReadInt16();
            Depth = p_Reader.ReadInt16();
            SliceCount = p_Reader.ReadInt16();
            Unused0 = p_Reader.ReadInt16();
            MipmapCount = p_Reader.ReadByte();
            MipmapBaseIndex = p_Reader.ReadByte();
            StreamingChunkId = new GUID(p_Reader);

            MipmapSizes = new uint[15];
            for (var i = 0; i < 15; ++i)
                MipmapSizes[i] = p_Reader.ReadUInt32();

            MipmapChainSize = p_Reader.ReadUInt32();
            ResourceNamehash = p_Reader.ReadUInt32();
            TextureGroup = Encoding.UTF8.GetString(p_Reader.ReadBytes(16));
        }
    }
}