2017-10-08 17:50:29 +01:00
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// /***************************************************************************
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// The Disc Image Chef
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// ----------------------------------------------------------------------------
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//
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// Filename : Dreamcast.cs
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// Author(s) : Natalia Portillo <claunia@claunia.com>
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//
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2017-12-19 03:50:57 +00:00
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// Component : Device structures decoders.
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2017-10-08 17:50:29 +01:00
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//
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// --[ Description ] ----------------------------------------------------------
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//
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2017-12-19 03:50:57 +00:00
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// Decodes Sega Dreamcast IP.BIN.
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2017-10-08 17:50:29 +01:00
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//
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// --[ License ] --------------------------------------------------------------
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//
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// This library is free software; you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as
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// published by the Free Software Foundation; either version 2.1 of the
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// License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, see <http://www.gnu.org/licenses/>.
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//
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// ----------------------------------------------------------------------------
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2017-12-19 03:50:57 +00:00
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// Copyright © 2011-2018 Natalia Portillo
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2017-10-08 17:50:29 +01:00
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// ****************************************************************************/
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using System;
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using System.Globalization;
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2017-10-08 18:55:06 +01:00
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using System.Runtime.InteropServices;
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2017-10-08 17:50:29 +01:00
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using System.Text;
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using DiscImageChef.Console;
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namespace DiscImageChef.Decoders.Sega
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{
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public static class Dreamcast
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2017-10-08 17:50:29 +01:00
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{
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2017-10-08 18:55:06 +01:00
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[StructLayout(LayoutKind.Sequential, Pack = 1)]
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2017-10-08 17:50:29 +01:00
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public struct IPBin
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{
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2017-10-08 18:55:06 +01:00
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/// <summary>Must be "SEGA SEGAKATANA "</summary>
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)]
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public byte[] SegaHardwareID;
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/// <summary>0x010, "SEGA ENTERPRISES"</summary>
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)]
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public byte[] maker_id;
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/// <summary>0x020, CRC of product_no and product_version</summary>
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public uint dreamcast_crc;
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/// <summary>0x024, " "</summary>
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public byte spare_space1;
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/// <summary>0x025, "GD-ROM"</summary>
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 6)]
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public byte[] dreamcast_media;
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/// <summary>0x02B, Disc number</summary>
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public byte disc_no;
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/// <summary>0x02C, '/'</summary>
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public byte disc_no_separator;
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/// <summary>0x02D, Total number of discs</summary>
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public byte disc_total_nos;
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/// <summary>0x02E, " "</summary>
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 2)]
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public byte[] spare_space2;
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/// <summary>0x030, Region codes, space-filled</summary>
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 8)]
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public byte[] region_codes;
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/// <summary>0x038, Supported peripherals, bitwise</summary>
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 7)]
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public byte[] peripherals;
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/// <summary>0x03F, ' '</summary>
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public byte spare_space3;
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/// <summary>0x040, Product number</summary>
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 10)]
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public byte[] product_no;
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/// <summary>0x04A, Product version</summary>
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 6)]
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public byte[] product_version;
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/// <summary>0x050, YYYYMMDD</summary>
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 8)]
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public byte[] release_date;
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/// <summary>0x058, " "</summary>
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 8)]
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public byte[] spare_space4;
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/// <summary>0x060, Usually "1ST_READ.BIN" or "0WINCE.BIN "</summary>
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 12)]
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public byte[] boot_filename;
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/// <summary>0x06C, " "</summary>
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 4)]
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public byte[] spare_space5;
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/// <summary>0x070, Game producer, space-filled</summary>
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)]
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public byte[] producer;
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/// <summary>0x080, Game name, space-filled</summary>
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 128)]
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public byte[] product_name;
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2017-10-08 17:50:29 +01:00
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}
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public static IPBin? DecodeIPBin(byte[] ipbin_sector)
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{
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if(ipbin_sector == null)
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return null;
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if(ipbin_sector.Length < 512)
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return null;
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IPBin ipbin = new IPBin();
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IntPtr ptr = Marshal.AllocHGlobal(512);
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Marshal.Copy(ipbin_sector, 0, ptr, 512);
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ipbin = (IPBin)Marshal.PtrToStructure(ptr, typeof(IPBin));
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Marshal.FreeHGlobal(ptr);
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DicConsole.DebugWriteLine("ISO9660 plugin", "dreamcast_ipbin.maker_id = \"{0}\"", Encoding.ASCII.GetString(ipbin.maker_id));
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DicConsole.DebugWriteLine("ISO9660 plugin", "dreamcast_ipbin.spare_space1 = \"{0}\"", (char)ipbin.spare_space1);
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DicConsole.DebugWriteLine("ISO9660 plugin", "dreamcast_ipbin.dreamcast_media = \"{0}\"", Encoding.ASCII.GetString(ipbin.dreamcast_media));
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DicConsole.DebugWriteLine("ISO9660 plugin", "dreamcast_ipbin.disc_no = {0}", (char)ipbin.disc_no);
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DicConsole.DebugWriteLine("ISO9660 plugin", "dreamcast_ipbin.disc_no_separator = \"{0}\"", (char)ipbin.disc_no_separator);
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DicConsole.DebugWriteLine("ISO9660 plugin", "dreamcast_ipbin.disc_total_nos = \"{0}\"", (char)ipbin.disc_total_nos);
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DicConsole.DebugWriteLine("ISO9660 plugin", "dreamcast_ipbin.spare_space2 = \"{0}\"", Encoding.ASCII.GetString(ipbin.spare_space2));
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DicConsole.DebugWriteLine("ISO9660 plugin", "dreamcast_ipbin.region_codes = \"{0}\"", Encoding.ASCII.GetString(ipbin.region_codes));
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DicConsole.DebugWriteLine("ISO9660 plugin", "dreamcast_ipbin.peripherals = \"{0}\"", Encoding.ASCII.GetString(ipbin.peripherals));
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DicConsole.DebugWriteLine("ISO9660 plugin", "dreamcast_ipbin.product_no = \"{0}\"", Encoding.ASCII.GetString(ipbin.product_no));
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DicConsole.DebugWriteLine("ISO9660 plugin", "dreamcast_ipbin.product_version = \"{0}\"", Encoding.ASCII.GetString(ipbin.product_version));
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DicConsole.DebugWriteLine("ISO9660 plugin", "dreamcast_ipbin.release_date = \"{0}\"", Encoding.ASCII.GetString(ipbin.release_date));
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DicConsole.DebugWriteLine("ISO9660 plugin", "dreamcast_ipbin.spare_space3 = \"{0}\"", (char)ipbin.spare_space3);
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DicConsole.DebugWriteLine("ISO9660 plugin", "dreamcast_ipbin.boot_filename = \"{0}\"", Encoding.ASCII.GetString(ipbin.boot_filename));
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DicConsole.DebugWriteLine("ISO9660 plugin", "dreamcast_ipbin.producer = \"{0}\"", Encoding.ASCII.GetString(ipbin.producer));
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DicConsole.DebugWriteLine("ISO9660 plugin", "dreamcast_ipbin.product_name = \"{0}\"", Encoding.ASCII.GetString(ipbin.product_name));
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return Encoding.ASCII.GetString(ipbin.SegaHardwareID) == "SEGA SEGAKATANA " ? ipbin : (IPBin?)null;
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}
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public static string Prettify(IPBin? decoded)
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{
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if(decoded == null)
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return null;
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IPBin ipbin = decoded.Value;
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StringBuilder IPBinInformation = new StringBuilder();
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IPBinInformation.AppendLine("--------------------------------");
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IPBinInformation.AppendLine("SEGA IP.BIN INFORMATION:");
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IPBinInformation.AppendLine("--------------------------------");
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// Decoding all data
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DateTime ipbindate;
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CultureInfo provider = CultureInfo.InvariantCulture;
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ipbindate = DateTime.ParseExact(Encoding.ASCII.GetString(ipbin.release_date), "yyyyMMdd", provider);
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IPBinInformation.AppendFormat("Product name: {0}", Encoding.ASCII.GetString(ipbin.product_name)).AppendLine();
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IPBinInformation.AppendFormat("Product version: {0}", Encoding.ASCII.GetString(ipbin.product_version)).AppendLine();
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IPBinInformation.AppendFormat("Product CRC: 0x{0:X8}", ipbin.dreamcast_crc).AppendLine();
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IPBinInformation.AppendFormat("Producer: {0}", Encoding.ASCII.GetString(ipbin.producer)).AppendLine();
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IPBinInformation.AppendFormat("Disc media: {0}", Encoding.ASCII.GetString(ipbin.dreamcast_media)).AppendLine();
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IPBinInformation.AppendFormat("Disc number {0} of {1}", (char)ipbin.disc_no, (char)ipbin.disc_total_nos).AppendLine();
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IPBinInformation.AppendFormat("Release date: {0}", ipbindate).AppendLine();
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switch(Encoding.ASCII.GetString(ipbin.boot_filename))
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{
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case "1ST_READ.BIN":
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IPBinInformation.AppendLine("Disc boots natively.");
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break;
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case "0WINCE.BIN ":
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IPBinInformation.AppendLine("Disc boots using Windows CE.");
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break;
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default:
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IPBinInformation.AppendFormat("Disc boots using unknown loader: {0}.", Encoding.ASCII.GetString(ipbin.boot_filename)).AppendLine();
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break;
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}
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IPBinInformation.AppendLine("Regions supported:");
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foreach(byte region in ipbin.region_codes)
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{
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switch((char)region)
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{
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case 'J':
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IPBinInformation.AppendLine("Japanese NTSC.");
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break;
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case 'U':
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IPBinInformation.AppendLine("North America NTSC.");
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break;
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case 'E':
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IPBinInformation.AppendLine("Europe PAL.");
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break;
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case ' ':
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break;
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default:
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IPBinInformation.AppendFormat("Game supports unknown region {0}.", region).AppendLine();
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break;
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}
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}
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int iPeripherals = int.Parse(Encoding.ASCII.GetString(ipbin.peripherals), NumberStyles.HexNumber);
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if((iPeripherals & 0x00000001) == 0x00000001)
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IPBinInformation.AppendLine("Game uses Windows CE.");
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IPBinInformation.AppendFormat("Peripherals:").AppendLine();
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if((iPeripherals & 0x00000010) == 0x00000010)
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IPBinInformation.AppendLine("Game supports the VGA Box.");
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if((iPeripherals & 0x00000100) == 0x00000100)
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IPBinInformation.AppendLine("Game supports other expansion.");
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if((iPeripherals & 0x00000200) == 0x00000200)
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IPBinInformation.AppendLine("Game supports Puru Puru pack.");
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if((iPeripherals & 0x00000400) == 0x00000400)
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IPBinInformation.AppendLine("Game supports Mike Device.");
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if((iPeripherals & 0x00000800) == 0x00000800)
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IPBinInformation.AppendLine("Game supports Memory Card.");
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if((iPeripherals & 0x00001000) == 0x00001000)
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IPBinInformation.AppendLine("Game requires A + B + Start buttons and D-Pad.");
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if((iPeripherals & 0x00002000) == 0x00002000)
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IPBinInformation.AppendLine("Game requires C button.");
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if((iPeripherals & 0x00004000) == 0x00004000)
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IPBinInformation.AppendLine("Game requires D button.");
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if((iPeripherals & 0x00008000) == 0x00008000)
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IPBinInformation.AppendLine("Game requires X button.");
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if((iPeripherals & 0x00010000) == 0x00010000)
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IPBinInformation.AppendLine("Game requires Y button.");
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if((iPeripherals & 0x00020000) == 0x00020000)
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IPBinInformation.AppendLine("Game requires Z button.");
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if((iPeripherals & 0x00040000) == 0x00040000)
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IPBinInformation.AppendLine("Game requires expanded direction buttons.");
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if((iPeripherals & 0x00080000) == 0x00080000)
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IPBinInformation.AppendLine("Game requires analog R trigger.");
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if((iPeripherals & 0x00100000) == 0x00100000)
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IPBinInformation.AppendLine("Game requires analog L trigger.");
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if((iPeripherals & 0x00200000) == 0x00200000)
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IPBinInformation.AppendLine("Game requires analog horizontal controller.");
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if((iPeripherals & 0x00400000) == 0x00400000)
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IPBinInformation.AppendLine("Game requires analog vertical controller.");
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if((iPeripherals & 0x00800000) == 0x00800000)
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IPBinInformation.AppendLine("Game requires expanded analog horizontal controller.");
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if((iPeripherals & 0x01000000) == 0x01000000)
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IPBinInformation.AppendLine("Game requires expanded analog vertical controller.");
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if((iPeripherals & 0x02000000) == 0x02000000)
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IPBinInformation.AppendLine("Game supports Gun.");
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|
|
|
|
if((iPeripherals & 0x04000000) == 0x04000000)
|
|
|
|
|
|
IPBinInformation.AppendLine("Game supports Keyboard.");
|
|
|
|
|
|
if((iPeripherals & 0x08000000) == 0x08000000)
|
|
|
|
|
|
IPBinInformation.AppendLine("Game supports Mouse.");
|
|
|
|
|
|
|
2017-10-08 18:55:06 +01:00
|
|
|
|
if((iPeripherals & 0xEE) != 0)
|
|
|
|
|
|
IPBinInformation.AppendFormat("Game supports unknown peripherals mask {0:X2}", (iPeripherals & 0xEE));
|
2017-10-08 17:50:29 +01:00
|
|
|
|
|
|
|
|
|
|
return IPBinInformation.ToString();
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
