SabreTools.Serialization/SabreTools.Data.Models/NintendoDisc/Constants.cs

namespace SabreTools.Data.Models.NintendoDisc
{
    public static class Constants
    {
        #region Disc identification magic values

        /// <summary>Magic word present at offset 0x01C on GameCube discs</summary>
        public const uint GCMagicWord = 0xC2339F3D;

        /// <summary>Magic word present at offset 0x018 on Wii discs</summary>
        public const uint WiiMagicWord = 0x5D1C9EA3;

        #endregion

        #region Disc header layout

        // Offsets within the 0x440-byte boot block.
        // Layout confirmed against Dolphin source (VolumeDisc.cpp / DiscUtils.h):
        //   0x000–0x003  Title code (4 chars, e.g. "GAFE")
        //   0x004–0x005  Maker code (2 chars, e.g. "01") — Dolphin Read(0x4, 2)
        //   0x006        Disc number           — Dolphin GetDiscNumber() Read(6)
        //   0x007        Revision              — Dolphin GetRevision()   Read(7)
        //   0x008        Audio streaming
        //   0x009        Streaming buffer size
        //   0x00A–0x017  Unused (14 bytes)
        //   0x018        Wii magic (0x5D1C9EA3)
        //   0x01C        GC magic  (0xC2339F3D)
        //   0x020–0x07F  Game title (0x60 bytes)
        //   0x080        Disable hash verification
        //   0x081        Disable disc encryption
        public const int TitleCodeOffset = 0x000;
        public const int TitleCodeLength = 4;
        public const int MakerCodeOffset = 0x004;
        public const int MakerCodeLength = 2;
        /// <summary>Full 6-char game ID = TitleCode[4] + MakerCode[2]</summary>
        public const int GameIdOffset = 0x000;
        public const int GameIdLength = 6;
        public const int DiscNumberOffset = 0x006;
        public const int DiscVersionOffset = 0x007;
        public const int AudioStreamingOffset = 0x008;
        public const int StreamingBufferSizeOffset = 0x009;
        public const int WiiMagicOffset = 0x018;
        public const int GCMagicOffset = 0x01C;
        public const int GameTitleOffset = 0x020;
        public const int GameTitleLength = 0x060;
        public const int DisableHashVerificationOffset = 0x080;
        public const int DisableDiscEncryptionOffset = 0x081;
        public const int DolOffsetField = 0x420;
        public const int FstOffsetField = 0x424;
        public const int FstSizeField = 0x428;
        public const int DiscHeaderSize = 0x440;

        #endregion

        #region BI2 data

        public const int Bi2Address = 0x000440;
        public const int Bi2Size = 0x2000;

        #endregion

        #region Apploader

        public const int ApploaderAddress = 0x002440;
        public const int ApploaderCodeSizeOffset = 0x14;
        public const int ApploaderTrailerSizeOffset = 0x18;
        public const int ApploaderHeaderSize = 0x20;

        #endregion

        #region Wii-specific disc layout

        public const int WiiPartitionTableAddress = 0x40000;
        public const int WiiPartitionGroupCount = 4;
        public const int WiiRegionDataAddress = 0x04E000;
        public const int WiiRegionDataSize = 0x20;

        #endregion

        #region Wii partition header fields

        // Offsets relative to partition start
        public const int WiiTicketSize = 0x2A4;
        public const int WiiTmdSizeAddress = 0x2A4;
        public const int WiiTmdOffsetAddress = 0x2A8;
        public const int WiiCertSizeAddress = 0x2AC;
        public const int WiiCertOffsetAddress = 0x2B0;
        public const int WiiH3OffsetAddress = 0x2B4;
        public const int WiiH3Size = 0x18000;
        public const int WiiDataOffsetAddress = 0x2B8;

        #endregion

        #region Wii block / group structure

        public const int WiiBlockSize = 0x8000;
        public const int WiiBlockHeaderSize = 0x0400;
        public const int WiiBlockDataSize = 0x7C00;
        public const int WiiBlocksPerGroup = 64;
        public const int WiiGroupSize = WiiBlocksPerGroup * WiiBlockSize;
        public const int WiiGroupDataSize = WiiBlocksPerGroup * WiiBlockDataSize;

        #endregion

        #region DVD sector size

        public const int DvdSectorSize = 0x800;

        #endregion

        #region Wii ticket fields

        // Offsets relative to ticket start
        public const int TicketEncryptedTitleKeyOffset = 0x1BF;
        public const int TicketTitleIdOffset = 0x1DC;
        public const int TicketCommonKeyIndexOffset = 0x1F1;

        #endregion
    }
}