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https://github.com/aaru-dps/Aaru.git
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73 lines
3.3 KiB
C#
73 lines
3.3 KiB
C#
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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 : Identify.cs
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// Author(s) : Natalia Portillo <claunia@claunia.com>
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//
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// Component : Disk image plugins.
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//
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// --[ Description ] ----------------------------------------------------------
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//
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// Identifies Nero Burning ROM disc images.
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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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// Copyright © 2011-2018 Natalia Portillo
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// ****************************************************************************/
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using System;
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using System.IO;
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using DiscImageChef.CommonTypes.Interfaces;
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using DiscImageChef.Console;
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namespace DiscImageChef.DiscImages
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{
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public partial class Nero
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{
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public bool Identify(IFilter imageFilter)
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{
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imageStream = imageFilter.GetDataForkStream();
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BigEndianBitConverter.IsLittleEndian = BitConverter.IsLittleEndian;
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NeroV1Footer footerV1 = new NeroV1Footer();
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NeroV2Footer footerV2 = new NeroV2Footer();
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imageStream.Seek(-8, SeekOrigin.End);
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byte[] buffer = new byte[8];
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imageStream.Read(buffer, 0, 8);
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footerV1.ChunkId = BigEndianBitConverter.ToUInt32(buffer, 0);
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footerV1.FirstChunkOffset = BigEndianBitConverter.ToUInt32(buffer, 4);
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imageStream.Seek(-12, SeekOrigin.End);
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buffer = new byte[12];
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imageStream.Read(buffer, 0, 12);
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footerV2.ChunkId = BigEndianBitConverter.ToUInt32(buffer, 0);
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footerV2.FirstChunkOffset = BigEndianBitConverter.ToUInt64(buffer, 4);
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DicConsole.DebugWriteLine("Nero plugin", "imageStream.Length = {0}", imageStream.Length);
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DicConsole.DebugWriteLine("Nero plugin", "footerV1.ChunkID = 0x{0:X8}", footerV1.ChunkId);
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DicConsole.DebugWriteLine("Nero plugin", "footerV1.FirstChunkOffset = {0}", footerV1.FirstChunkOffset);
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DicConsole.DebugWriteLine("Nero plugin", "footerV2.ChunkID = 0x{0:X8}", footerV2.ChunkId);
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DicConsole.DebugWriteLine("Nero plugin", "footerV2.FirstChunkOffset = {0}", footerV2.FirstChunkOffset);
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if(footerV2.ChunkId == NERO_FOOTER_V2 && footerV2.FirstChunkOffset < (ulong)imageStream.Length) return true;
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return footerV1.ChunkId == NERO_FOOTER_V1 && footerV1.FirstChunkOffset < (ulong)imageStream.Length;
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}
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}
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}
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