public override ImageData Read(IBinaryStream stream, ImageMetaData info)
{
var meta = (ApsMetaData)info;
stream.Position = meta.DataOffset;
byte[] image_data;
if (meta.IsPacked)
{
using (var reader = new LzReader(stream.AsStream, meta.PackedSize, meta.UnpackedSize))
{
reader.Unpack();
image_data = reader.Data;
}
}
else
{
image_data = stream.ReadBytes((int)meta.UnpackedSize);
}
using (var unpacked = BinaryStream.FromArray(image_data, stream.Name))
{
var ap_info = base.ReadMetaData(unpacked);
if (null == ap_info)
{
throw new InvalidFormatException();
}
return(base.Read(unpacked, ap_info));
}
}
public override Stream OpenEntry(ArcFile arc, Entry entry)
{
var packed_entry = entry as PackedEntry;
if (null == packed_entry || !packed_entry.IsPacked)
{
return(arc.File.CreateStream(entry.Offset, entry.Size));
}
if (0 == packed_entry.UnpackedSize)
{
packed_entry.UnpackedSize = arc.File.View.ReadUInt32(entry.Offset - 4);
}
using (var input = arc.File.CreateStream(entry.Offset, entry.Size))
using (var reader = new LzReader(input, entry.Size, packed_entry.UnpackedSize))
{
reader.Unpack();
return(new BinMemoryStream(reader.Data, entry.Name));
}
}