109 lines
2.6 KiB
C#
109 lines
2.6 KiB
C#
using System.Runtime.InteropServices;
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namespace Flawless.Core.BinaryDataFormat;
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/* Depot Transmission Format Design - Version 1
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*
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* We have shrink some layout design and remap fields in order to optimize for networking transmission.
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*
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* Notice that we have assumed that all data are represent as LITTLE ENDIAN.
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*
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* Padding with 8 byte width, so:
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*
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* ------------------------------------------
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* 0 : Version Code
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* 1 : Network Transmission Feature
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* 2 : Compressing Algorithm Type (CompressType)
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* 3 : Checksum Confuser
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* 4 : Depot Generate Time
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* 5 : ~
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* 6 : ~
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* 7 : ~
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* ------------------------------------------
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* 8 : ~
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* 9 : ~
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* 10 : ~
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* 11 : ~
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* 12 : File Map String Size
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* 13 : ~
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* 14 : ~
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* 15 : ~
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* ------------------------------------------
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* 16 : ~
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* 17 : ~
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* 18 : ~
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* 19 : ~
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* 20 : ~
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* 21 : ~
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* 22 : ~
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* 23 : ~
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* ------------------------------------------
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* 24 : ~
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* 25 : ~
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* 26 : ~
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* 27 : ~
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* 28 : Payload Size
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* 29 : ~
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* 30 : ~
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* 31 : ~
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* ------------------------------------------
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* 32 : ~
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* 33 : ~
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* 34 : ~
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* 35 : ~
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* 36 : MD5 Checksum (Standard MD5Checksum)
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* 37 : ~
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* 38 : ~
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* 39 : ~
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* ------------------------------------------
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* 40 : ~
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* 41 : ~
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* 42 : ~
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* 43 : ~
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* 44 : ~
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* 45 : ~
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* 46 : ~
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* 47 : ~
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* ------------------------------------------
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* 48 : ~
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* 49 : ~
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* 50 : ~
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* 51 : ~
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* 52 : ~
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* ------------------------------------------
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* FILE NAME MAP (STRING IN UTF8)
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* ------------------------------------------
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* PAYLOAD
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*/
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[Flags]
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public enum NetworkTransmissionFeatureFlag: byte
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{
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FileMapIsJson = 1 << 0,
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FileMapUseCompressionArgument = 1 << 7,
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}
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[Serializable, StructLayout(LayoutKind.Explicit, CharSet = CharSet.Ansi, Pack = 8, Size = 52)]
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public struct NetworkDepotHeaderV1
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{
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[FieldOffset(0)] public byte Version;
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[FieldOffset(1)] public NetworkTransmissionFeatureFlag NetworkTransmissionFeature;
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[FieldOffset(2)] public byte CompressType;
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[FieldOffset(3)] public byte Md5Confuser;
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[FieldOffset(4)] public ulong GenerateTime;
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[FieldOffset(12)] public ulong FileMapStringSizeLower;
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[FieldOffset(20)] public ulong FileMapStringSizeUpper;
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[FieldOffset(28)] public ulong PayloadSize;
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[FieldOffset(36)] public ulong Md5ChecksumLower;
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[FieldOffset(44)] public ulong Md5ChecksumUpper;
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}
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