public override uint Signature { get { return 0; } } // 'RIFF'
public override ImageMetaData ReadMetaData (IBinaryStream file)
{
// 'RIFF' isn't included into signature to avoid auto-detection of the WAV files as IPH images.
if (0x46464952 != file.Signature) // 'RIFF'
return null;
var header = file.ReadHeader (0x10);
if (0x38 != header.ToInt32 (4))
return null;
var signature = header.ToInt32 (8);
if (signature != 0x20485049 && signature != 0x00485049) // 'IPH'
return null;
if (0x20746D66 != header.ToInt32 (12)) // 'fmt '
return null;
file.Position = 0x38;
if (0x20706D62 != file.ReadInt32()) // 'bmp '
return null;
var info = new IphMetaData();
info.PackedSize = file.ReadInt32();
info.Width = file.ReadUInt16();
info.Height = file.ReadUInt16();
file.Position = 0x50;
info.BPP = file.ReadUInt16();
info.IsCompressed = 0 != file.ReadInt16();
// XXX int16@[0x54] is a transparency color or 0xFFFF if image is not transparent
return info;
}
public IphReader(Stream input, IphMetaData info)
{
m_info = info;
m_input = new ArcView.Reader(input);
m_width = (int)info.Width;
m_height = (int)info.Height;
m_output = new byte[m_width * m_height * 2];
}
public IphReader (IBinaryStream input, IphMetaData info)
{
m_info = info;
m_input = input;
m_width = (int)info.Width;
m_height = (int)info.Height;
m_output = new byte[m_width*m_height*2];
}
} // 'RIFF'
public override ImageMetaData ReadMetaData(Stream stream)
{
// 'RIFF' isn't included into signature to avoid auto-detection of the WAV files as IPH images.
if (0x46464952 != FormatCatalog.ReadSignature(stream)) // 'RIFF'
{
return(null);
}
using (var reader = new ArcView.Reader(stream))
{
if (0x38 != reader.ReadInt32())
{
return(null);
}
var signature = reader.ReadInt32();
if (signature != 0x20485049 && signature != 0x00485049) // 'IPH'
{
return(null);
}
if (0x20746D66 != reader.ReadInt32()) // 'fmt '
{
return(null);
}
reader.BaseStream.Position = 0x38;
if (0x20706D62 != reader.ReadInt32()) // 'bmp '
{
return(null);
}
var info = new IphMetaData();
info.PackedSize = reader.ReadInt32();
info.Width = reader.ReadUInt16();
info.Height = reader.ReadUInt16();
reader.BaseStream.Position = 0x50;
info.BPP = reader.ReadUInt16();
info.IsCompressed = 0 != reader.ReadInt16();
// XXX int16@[0x54] is a transparency color or 0xFFFF if image is not transparent
return(info);
}
}
