/// <summary>Reads JFIF values and returns them in an <see cref="JfifDirectory"/>.</summary>
public JfifDirectory Extract(IndexedReader reader)
{
var directory = new JfifDirectory();
try
{
// For JFIF the tag number is the value's byte offset
directory.Set(JfifDirectory.TagVersion, reader.GetUInt16(JfifDirectory.TagVersion));
directory.Set(JfifDirectory.TagUnits, reader.GetByte(JfifDirectory.TagUnits));
directory.Set(JfifDirectory.TagResX, reader.GetUInt16(JfifDirectory.TagResX));
directory.Set(JfifDirectory.TagResY, reader.GetUInt16(JfifDirectory.TagResY));
directory.Set(JfifDirectory.TagThumbWidth, reader.GetByte(JfifDirectory.TagThumbWidth));
directory.Set(JfifDirectory.TagThumbHeight, reader.GetByte(JfifDirectory.TagThumbHeight));
}
catch (IOException e)
{
directory.AddError(e.Message);
}
return directory;
}
/// <summary>Reads JFXX values and returns them in an <see cref="JfxxDirectory"/>.</summary>
public JfxxDirectory Extract(IndexedReader reader)
{
var directory = new JfxxDirectory();
try
{
// For JFIF the tag number is the value's byte offset
directory.Set(JfxxDirectory.TagExtensionCode, reader.GetByte(JfxxDirectory.TagExtensionCode));
}
catch (IOException e)
{
directory.AddError(e.Message);
}
return directory;
}