010 Editor GCI Template

//--------------------------------------
//--- 010 Editor v6.0.3 Binary Template
//
// File:        GCI.bt
// Author:      Visual Studio
// Revision:    1.0
// Purpose:     Dissecting GCI save files
//--------------------------------------

BigEndian();
BitfieldRightToLeft();

typedef uchar u8;
typedef uint16 u16;
typedef uint32 u32;
typedef uint64 u64;

typedef struct _GCI_HEADER {
    u8  GameID[3]       <comment="Game identifier",bgcolor=cLtGreen>;
    u8  RegionFlag      <comment="Region Flag",bgcolor=cLtBlue>;
    u8  CompanyID[2]    <comment="Company identifier">;
    u8  pad0            <hidden=true,bgcolor=cLtRed>;
    u8  GraphicFormat   <comment="Graphics Format">;
    u8  FileID[0x20]    <comment="File identifier",bgcolor=cLtGreen>;
    u32 LastModified    <comment="Last Modified Date">;
    u32 GraphicOffset   <comment="Graphics Offset">;
    u8  pad1[0x8]       <hidden=true,bgcolor=cLtRed>;
    u16 NumBlocksUsed   <comment="Number of blocks used">;
    u8  pad2[0x2]       <hidden=true,bgcolor=cLtRed>;
    u32 InfoOffset      <comment="File info offset">;
} GCI_HEADER;

typedef struct _FILE_INFO {
    u8  GameName[0x20]  <comment="Game name",bgcolor=cLtGreen>;
    u8  FileInfo[0x20]  <comment="File info">;
} FILE_INFO;

local u8 graphic_fmt[0x3];
local u16 graphic_len = 0;

// header
GCI_HEADER gci_header;

// file info
if(gci_header.InfoOffset > 0)
    FSeek(sizeof(GCI_HEADER) + gci_header.InfoOffset);
FILE_INFO file_info;

// graphic
if(gci_header.GraphicFormat == 0x01 || gci_header.GraphicFormat == 0x05) {
    graphic_fmt = "CI8";
    // CI8 then Graphic [3072] + Palete [512] = Total [3584]
    graphic_len = 0xE00;
}
else if(gci_header.GraphicFormat == 0x02 || gci_header.GraphicFormat == 0x06) {
    graphic_fmt = "RGB";
    // RGB5A3  Graphic [6144]
    graphic_len = 0x1800;
}
typedef struct _GRAPHIC {
    u8  Graphic[graphic_len]    <comment="The save graphic">;
} GRAPHIC;
if(gci_header.GraphicOffset > 0)
    FSeek(sizeof(GCI_HEADER) + gci_header.GraphicOffset);
GRAPHIC graphic;