source: OniSplit/Metadata/OniMacMetadata.cs@ 1164

using System;
using System.Collections.Generic;

namespace Oni.Metadata
{
    internal class OniMacMetadata : InstanceMetadata
    {
        //
        // Binary Data template
        //

        private static MetaStruct bina = new MetaStruct("BINAInstance",
            new Field(MetaType.Int32, "DataSize"),
            new BinaryPartField(MetaType.SepOffset, "DataOffset", "DataSize")
        );

        //
        // Texture Map template
        //

        private static MetaStruct txmp = new MetaStruct("TXMPInstance",
            new Field(MetaType.Padding(128)),
            new Field(MetaType.Enum<TXMPFlags>(), "Flags"),
            new Field(MetaType.Int16, "Width"),
            new Field(MetaType.Int16, "Height"),
            new Field(MetaType.Enum<TXMPFormat>(), "Format"),
            new Field(MetaType.Pointer(TemplateTag.TXAN), "Animation"),
            new Field(MetaType.Pointer(TemplateTag.TXMP), "EnvMap"),
            new Field(MetaType.Padding(4)),
            new BinaryPartField(MetaType.SepOffset, "DataOffset"),
            new Field(MetaType.Padding(8))
        );

        //
        // Oni Sound Binary Data template
        //

        private static MetaStruct osbd = new MetaStruct("OSBDInstance",
            new Field(MetaType.Int32, "DataSize"),
            new BinaryPartField(MetaType.SepOffset, "DataOffset", "DataSize")
        );

        //
        // Sound Data template
        //

        private static MetaStruct sndd = new MetaStruct("SNDDInstance",
            new Field(MetaType.Int32, "Flags"),
            new Field(MetaType.Int32, "Duration"),
            new Field(MetaType.Int32, "DataSize"),
            new BinaryPartField(MetaType.RawOffset, "DataOffset", "DataSize")
        );

        protected override void InitializeTemplates(IList<Template> templates)
        {
            base.InitializeTemplates(templates);

            templates.Add(new Template(TemplateTag.BINA, bina, 0x15e11, "Binary Data"));
            templates.Add(new Template(TemplateTag.OSBD, osbd, 0x15e3c, "Oni Sound Binary Data"));
            templates.Add(new Template(TemplateTag.TXMP, txmp, 0x8911eeb5f, "Texture Map"));
            templates.Add(new Template(TemplateTag.SNDD, sndd, 0x411eb, "Sound Data"));
        }
    }
}