public override IImageDecoder OpenImage(ArcFile arc, Entry entry)
{
var input = arc.OpenBinaryEntry(entry);
int fmt = (int)input.Signature & 0xFFFF;
if (fmt > 4)
{
return(ImageFormatDecoder.Create(input));
}
var header = input.ReadHeader(14);
input.Position = 0;
int hpos = 2;
if (1 == fmt || 3 == fmt)
{
hpos = 8;
}
int cmp = header.ToUInt16(hpos);
int bpp = 0;
switch (cmp & 0xFF)
{
case 2: bpp = 4; break;
case 3: bpp = 8; break;
case 5: bpp = 24; break;
default:
return(ImageFormatDecoder.Create(input));
}
var info = new LcImageMetaData {
Width = header.ToUInt16(hpos + 2),
Height = header.ToUInt16(hpos + 4),
BPP = bpp,
Format = fmt,
Compression = cmp,
DataOffset = hpos + 6,
};
return(new LcImageDecoder(input, info));
}
public LcImageDecoder(IBinaryStream input, LcImageMetaData info) : base(input, info)
{
m_info = info;
}