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110 lines
4.2 KiB
C#
110 lines
4.2 KiB
C#
//! \file ArcGR2.cs
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//! \date 2017 Dec 26
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//! \brief Studio Polaris resource archive.
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//
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// Copyright (C) 2017 by morkt
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to
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// deal in the Software without restriction, including without limitation the
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// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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// sell copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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// IN THE SOFTWARE.
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//
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using System.Collections.Generic;
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using System.ComponentModel.Composition;
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using System.IO;
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namespace GameRes.Formats.UMeSoft
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{
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[Export(typeof(ArchiveFormat))]
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public class Gr2Opener : ArchiveFormat
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{
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public override string Tag { get { return "GR2/PACK"; } }
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public override string Description { get { return "Studio Polaris resource archive"; } }
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public override uint Signature { get { return 0x4B434150; } } // 'PACK'
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public override bool IsHierarchic { get { return false; } }
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public override bool CanWrite { get { return false; } }
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public Gr2Opener ()
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{
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Extensions = new string[] { "gr2", "vic", "pac" };
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}
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public override ArcFile TryOpen (ArcView file)
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{
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int count = file.View.ReadInt32 (4);
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if (!IsSaneCount (count))
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return null;
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uint data_offset = file.View.ReadUInt32 (8);
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if (data_offset < 0x10 || data_offset >= file.MaxOffset)
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return null;
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bool is_gr2 = file.Name.HasExtension ("gr2");
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uint index_offset = 0x10;
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var dir = new List<Entry> (count);
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for (int i = 0; i < count; ++i)
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{
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var name = file.View.ReadString (index_offset, 0x10);
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var entry = FormatCatalog.Instance.Create<Entry> (name);
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entry.Size = file.View.ReadUInt32 (index_offset+0x10);
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entry.Offset = file.View.ReadUInt32 (index_offset+0x14);
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if (entry.Offset < data_offset || !entry.CheckPlacement (file.MaxOffset))
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return null;
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if (is_gr2)
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entry.Type = "image";
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dir.Add (entry);
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index_offset += 0x18;
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}
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return new ArcFile (file, this, dir);
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}
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public override Stream OpenEntry (ArcFile arc, Entry entry)
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{
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if (!arc.File.View.AsciiEqual (entry.Offset, "LL5\0"))
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return base.OpenEntry (arc, entry);
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using (var input = arc.File.CreateStream (entry.Offset+4, entry.Size-4))
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{
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var output = new MemoryStream();
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LL5Decompress (input, output);
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output.Position = 0;
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return output;
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}
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}
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void LL5Decompress (IBinaryStream input, Stream output)
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{
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var buffer = new byte[0x100];
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while (input.PeekByte() != -1)
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{
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int count = input.ReadInt8();
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if (count < 0)
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{
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count = -count;
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input.Read (buffer, 0, count);
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output.Write (buffer, 0, count);
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}
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else
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{
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byte v = input.ReadUInt8();
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for (int i = 0; i < count; ++i)
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buffer[i] = v;
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output.Write (buffer, 0, count);
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}
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}
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}
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}
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}
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