mirror of
https://github.com/crskycode/GARbro.git
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177 lines
6.6 KiB
C#
177 lines
6.6 KiB
C#
//! \file ArcMCA.cs
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//! \date Sun Dec 06 19:12:34 2015
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//! \brief F&C Co. multi-frame image format.
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//
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// Copyright (C) 2015 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 GameRes.Formats.Strings;
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using System;
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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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using System.Windows.Media;
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using System.Windows.Media.Imaging;
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namespace GameRes.Formats.FC01
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{
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internal class McaArchive : ArcFile
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{
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public readonly byte Key;
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public readonly int BPP;
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public readonly BitmapPalette Palette;
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public McaArchive (ArcView arc, ArchiveFormat impl, ICollection<Entry> dir, byte key, int bpp = 24, BitmapPalette palette = null)
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: base (arc, impl, dir)
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{
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Key = key;
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BPP = bpp;
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Palette = palette;
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}
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}
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[Export(typeof(ArchiveFormat))]
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public class McaOpener : ArchiveFormat
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{
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public override string Tag { get { return "MCA"; } }
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public override string Description { get { return "F&C Co. multi-frame image format"; } }
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public override uint Signature { get { return 0x2041434D; } } // 'MCA'
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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 override ArcFile TryOpen (ArcView file)
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{
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uint index_offset = file.View.ReadUInt32 (0x10);
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int count = file.View.ReadInt32 (0x20);
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if (index_offset >= file.MaxOffset || !IsSaneCount (count))
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return null;
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int bpp = file.View.ReadInt32 (0x14);
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BitmapPalette palette = null;
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if (8 == bpp)
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{
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palette = ImageFormat.ReadPalette (file, index_offset);
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index_offset += 0x400;
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}
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string base_name = Path.GetFileNameWithoutExtension (file.Name);
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long next_offset = file.View.ReadUInt32 (index_offset);
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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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if (next_offset > file.MaxOffset || next_offset <= index_offset)
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return null;
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index_offset += 4;
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var entry = new Entry
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{
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Name = string.Format ("{0}#{1:D4}", base_name, i),
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Offset = next_offset,
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Type = "image",
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};
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next_offset = i+1 == count ? file.MaxOffset : file.View.ReadUInt32 (index_offset);
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entry.Size = (uint)(next_offset - entry.Offset);
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if (entry.Size > 0x20)
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dir.Add (entry);
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}
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if (0 == dir.Count)
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return null;
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var options = Query<McgOptions> (arcStrings.MCAEncryptedNotice);
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return new McaArchive (file, this, dir, options.Key, bpp, palette);
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}
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public override IImageDecoder OpenImage (ArcFile arc, Entry entry)
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{
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var mca = (McaArchive)arc;
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var input = arc.File.CreateStream (entry.Offset, entry.Size);
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try
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{
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return new McaDecoder (input, mca.Key, mca.BPP, mca.Palette);
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}
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catch
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{
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input.Dispose();
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throw;
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}
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}
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public override ResourceOptions GetDefaultOptions ()
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{
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return new McgOptions { Key = Properties.Settings.Default.MCGLastKey };
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}
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public override ResourceOptions GetOptions (object widget)
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{
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var w = widget as GUI.WidgetMCG;
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if (null != w)
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Properties.Settings.Default.MCGLastKey = w.GetKey ();
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return GetDefaultOptions();
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}
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public override object GetAccessWidget ()
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{
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return new GUI.WidgetMCG();
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}
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}
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internal sealed class McaDecoder : BinaryImageDecoder
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{
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byte m_key;
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bool m_compressed;
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int m_packed_size;
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int m_unpacked_size;
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BitmapPalette m_palette;
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public McaDecoder (IBinaryStream input, byte key, int bpp, BitmapPalette palette) : base (input)
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{
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m_key = key;
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var header = m_input.ReadHeader (0x20);
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int method = header.ToInt32 (0);
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if (method < 0 || method > 1)
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throw new InvalidFormatException();
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m_compressed = method != 0;
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uint width = header.ToUInt32 (0xC);
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uint height = header.ToUInt32 (0x10);
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m_packed_size = header.ToInt32 (0x14);
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m_unpacked_size = header.ToInt32 (0x18);
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Info = new ImageMetaData { Width = width, Height = height, BPP = bpp };
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m_palette = palette;
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}
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protected override ImageData GetImageData ()
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{
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m_input.Position = 0x20;
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var data = m_input.ReadBytes (m_packed_size);
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MrgOpener.Decrypt (data, 0, data.Length, m_key);
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if (m_compressed)
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{
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using (var input = new BinMemoryStream (data))
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using (var lzss = new MrgLzssReader (input, data.Length, m_unpacked_size))
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{
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lzss.Unpack();
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data = lzss.Data;
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}
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}
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int stride = ((int)Info.Width * Info.BPP / 8 + 3) & ~3;
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var format = 8 == Info.BPP ? PixelFormats.Indexed8 : PixelFormats.Bgr24;
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return ImageData.Create (Info, format, m_palette, data, stride);
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}
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}
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}
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