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implemented another variant of ELG images.

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This commit is contained in:
morkt
2016-01-06 19:54:00 +04:00
parent eac5f21bd6
commit 1fa643b628
2 changed files with 37 additions and 5 deletions
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35
ArcFormats/Lucifen/ImageELG.cs
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@@ -35,6 +35,7 @@ namespace GameRes.Formats.Lucifen
{
internal class ElgMetaData : ImageMetaData
{
public int Type;
public int HeaderSize;
}
@@ -47,7 +48,7 @@ namespace GameRes.Formats.Lucifen
public ElgFormat ()
{
Signatures = new uint[] { 0x01474c45u, 0x08474c45u, 0x18474c45u, 0x20474c45u };
Signatures = new uint[] { 0x01474c45u, 0x08474c45u, 0x18474c45u, 0x20474c45u, 0x02474c45u };
}
public override void Write (Stream file, ImageData image)
@@ -63,18 +64,31 @@ namespace GameRes.Formats.Lucifen
int bpp = input.ReadByte();
int x = 0;
int y = 0;
int type = bpp;
int header_size = 8;
if (1 == bpp)
if (2 == type)
{
bpp = input.ReadByte();
header_size = 13;
}
else if (1 == type)
{
bpp = input.ReadByte();
x = input.ReadInt16();
y = input.ReadInt16();
header_size = 13;
}
else
type = 0;
if (8 != bpp && 24 != bpp && 32 != bpp)
return null;
uint w = input.ReadUInt16();
uint h = input.ReadUInt16();
if (2 == type)
{
x = input.ReadInt16();
y = input.ReadInt16();
}
return new ElgMetaData
{
Width = w,
@@ -82,6 +96,7 @@ namespace GameRes.Formats.Lucifen
OffsetX = x,
OffsetY = y,
BPP = bpp,
Type = type,
HeaderSize = header_size,
};
}
@@ -89,9 +104,7 @@ namespace GameRes.Formats.Lucifen
public override ImageData Read (Stream file, ImageMetaData info)
{
var meta = info as ElgMetaData;
if (null == meta)
throw new ArgumentException ("ElgFormat.Read should be supplied with ElgMetaData", "info");
var meta = (ElgMetaData)info;
file.Position = meta.HeaderSize;
using (var reader = new Reader (file, meta))
{
@@ -105,6 +118,7 @@ namespace GameRes.Formats.Lucifen
int m_width;
int m_height;
int m_bpp;
int m_type;
BinaryReader m_input;
byte[] m_output;
@@ -117,12 +131,23 @@ namespace GameRes.Formats.Lucifen
m_width = (int)info.Width;
m_height = (int)info.Height;
m_bpp = info.BPP;
m_type = info.Type;
m_output = new byte[m_width*m_height*m_bpp/8];
m_input = new ArcView.Reader (stream);
}
public void Unpack ()
{
if (2 == m_type)
{
while (0 != m_input.ReadByte())
{
int size = m_input.ReadInt32();
if (size < 4)
throw new InvalidFormatException();
m_input.BaseStream.Seek (size-4, SeekOrigin.Current);
}
}
if (8 == m_bpp)
{
Format = PixelFormats.Indexed8;