public override ImageMetaData ReadMetaData(Stream stream)
{
using (var input = new ArcView.Reader (stream))
{
input.ReadInt32();
var info = new DgcMetaData();
info.Flags = input.ReadUInt32();
info.Width = input.ReadUInt16();
info.Height = input.ReadUInt16();
if (info.Width > 0x7fff || info.Height > 0x7fff)
return null;
info.BPP = 0 == (info.Flags & Reader.FlagAlphaChannel) ? 24 : 32;
return info;
}
}
} // 'DGC'
public override ImageMetaData ReadMetaData(IBinaryStream file)
{
file.Position = 4;
var info = new DgcMetaData();
info.Flags = file.ReadUInt32();
info.Width = file.ReadUInt16();
info.Height = file.ReadUInt16();
if (info.Width > 0x7fff || info.Height > 0x7fff)
{
return(null);
}
info.BPP = 0 == (info.Flags & Reader.FlagAlphaChannel) ? 24 : 32;
return(info);
}
} // 'DGC'
public override ImageMetaData ReadMetaData(Stream stream)
{
using (var input = new ArcView.Reader(stream))
{
input.ReadInt32();
var info = new DgcMetaData();
info.Flags = input.ReadUInt32();
info.Width = input.ReadUInt16();
info.Height = input.ReadUInt16();
if (info.Width > 0x7fff || info.Height > 0x7fff)
{
return(null);
}
info.BPP = 0 == (info.Flags & Reader.FlagAlphaChannel) ? 24 : 32;
return(info);
}
}
public Reader(IBinaryStream input, DgcMetaData info)
{
m_width = (int)info.Width;
m_height = (int)info.Height;
m_input = input;
m_use_dict = 0 != (info.Flags & FlagUseDictionary);
m_has_alpha = 0 != (info.Flags & FlagAlphaChannel);
m_max_dict_size = (int)(info.Flags & 0xffffff);
if (m_has_alpha)
{
Format = PixelFormats.Bgra32;
m_pixel_size = 4;
}
else
{
Format = PixelFormats.Bgr24;
m_pixel_size = 3;
}
m_stride = m_width * m_pixel_size;
m_output = new byte[m_stride * m_height];
}
public Reader(Stream input, DgcMetaData info)
{
m_width = (int)info.Width;
m_height = (int)info.Height;
m_input = new ArcView.Reader (input);
m_use_dict = 0 != (info.Flags & FlagUseDictionary);
m_has_alpha = 0 != (info.Flags & FlagAlphaChannel);
m_max_dict_size = (int)(info.Flags & 0xffffff);
if (m_has_alpha)
{
Format = PixelFormats.Bgra32;
m_pixel_size = 4;
}
else
{
Format = PixelFormats.Bgr24;
m_pixel_size = 3;
}
m_stride = m_width * m_pixel_size;
m_output = new byte[m_stride*m_height];
}
