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implemented OpenImage methods for some image archives.

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This commit is contained in:
morkt
2016-12-26 03:15:15 +04:00
parent c256563181
commit e1a0cca0fd
5 changed files with 223 additions and 70 deletions
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75
ArcFormats/FC01/ArcMCA.cs
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@@ -29,6 +29,7 @@ using System;
using System.Collections.Generic;
using System.ComponentModel.Composition;
using System.IO;
using System.Windows.Media;
namespace GameRes.Formats.FC01
{
@@ -69,7 +70,7 @@ namespace GameRes.Formats.FC01
index_offset += 4;
var entry = new Entry
{
Name = string.Format ("{0}#{1:D4}.tga", base_name, i),
Name = string.Format ("{0}#{1:D4}", base_name, i),
Offset = next_offset,
Type = "image",
};
@@ -84,31 +85,19 @@ namespace GameRes.Formats.FC01
return new McaArchive (file, this, dir, options.Key);
}
public override Stream OpenEntry (ArcFile arc, Entry entry)
public override IImageDecoder OpenImage (ArcFile arc, Entry entry)
{
var mca = arc as McaArchive;
int method = arc.File.View.ReadInt32 (entry.Offset);
if (null == mca || method < 0 || method > 1)
return base.OpenEntry (arc, entry);
uint width = arc.File.View.ReadUInt32 (entry.Offset+0xC);
uint height = arc.File.View.ReadUInt32 (entry.Offset+0x10);
uint packed_size = arc.File.View.ReadUInt32 (entry.Offset+0x14);
int unpacked_size = arc.File.View.ReadInt32 (entry.Offset+0x18);
var data = arc.File.View.ReadBytes (entry.Offset+0x20, packed_size);
MrgOpener.Decrypt (data, 0, data.Length, mca.Key);
if (method > 0)
var mca = (McaArchive)arc;
var input = arc.File.CreateStream (entry.Offset, entry.Size);
try
{
using (var input = new BinMemoryStream (data))
using (var lzss = new MrgLzssReader (input, data.Length, unpacked_size))
{
lzss.Unpack();
data = lzss.Data;
}
return new McaDecoder (input, mca.Key);
}
catch
{
input.Dispose();
throw;
}
int stride = ((int)width * 3 + 3) & ~3;
var info = new ImageMetaData { Width = width, Height = height, BPP = 24 };
return TgaStream.Create (info, stride, data);
}
public override ResourceOptions GetDefaultOptions ()
@@ -129,4 +118,44 @@ namespace GameRes.Formats.FC01
return new GUI.WidgetMCG();
}
}
internal sealed class McaDecoder : BinaryImageDecoder
{
byte m_key;
int m_method;
int m_packed_size;
int m_unpacked_size;
public McaDecoder (IBinaryStream input, byte key) : base (input)
{
m_key = key;
var header = m_input.ReadHeader (0x20);
m_method = header.ToInt32 (0);
if (m_method < 0 || m_method > 1)
throw new InvalidFormatException();
uint width = header.ToUInt32 (0xC);
uint height = header.ToUInt32 (0x10);
m_packed_size = header.ToInt32 (0x14);
m_unpacked_size = header.ToInt32 (0x18);
Info = new ImageMetaData { Width = width, Height = height, BPP = 24 };
}
protected override ImageData GetImageData ()
{
m_input.Position = 0x20;
var data = m_input.ReadBytes (m_packed_size);
MrgOpener.Decrypt (data, 0, data.Length, m_key);
if (m_method > 0)
{
using (var input = new BinMemoryStream (data))
using (var lzss = new MrgLzssReader (input, data.Length, m_unpacked_size))
{
lzss.Unpack();
data = lzss.Data;
}
}
int stride = ((int)Info.Width * 3 + 3) & ~3;
return ImageData.Create (Info, PixelFormats.Bgr24, null, data, stride);
}
}
}