public override ImageMetaData ReadMetaData(IBinaryStream stream)
{
var header = stream.ReadHeader(0x11);
byte type = header[0];
if (type != 0 && type != 1)
{
return(null);
}
var info = new GecMetaData
{
Type = type,
OffsetX = header.ToInt16(1),
OffsetY = header.ToInt16(3),
Width = header.ToUInt16(5),
Height = header.ToUInt16(7),
BPP = 0 == type ? 24 : 32,
AlphaOffset = header.ToInt32(9),
DataOffset = header.ToInt32(0xD),
};
if (info.OffsetX < 0 || info.OffsetY < 0 || info.Width <= 0 || info.Height <= 0 ||
info.DataOffset < 0 || info.DataOffset > stream.Length)
{
return(null);
}
if (1 == type && info.AlphaOffset <= 0)
{
return(null);
}
return(info);
}
public GecReader(Stream input, GecMetaData info)
{
m_input = new byte[input.Length];
input.Read(m_input, 0, m_input.Length);
m_info = info;
}
