• Design
  
• UseCases
  
• GettingTheCode

Feature Matrix

Format             Implemented?        Unit Tested?

Tiff               Read                Read
   + Exif          Read                Read
   + Xmp           Read                Read

Jpeg               ReadWrite           ReadWrite
   + Exif          ReadWrite           ReadWrite
   + Xmp           Read                None
   + JpegComment   ReadWrite           ReadWrite

PNG                None                None
   + Xmp           None                None

RAW (.CR2, .NEF)   None                None

TODO

Also already implemented features need some work.

IFD

• Fixup brocken tags when reading
  
• done Move some of the render and read code to the IFDEntries itself
  
• done Create Rational struct to handle rational values
  
• done Create ‘ThumbailDataIFDEntry’ to handle the special meaning of the entries in ThumbnailIFD
  
• The tag mappings in src/TagLib/IFD/Tags/ need to be extended (and the unit tests adapted to replace the values). Easy task, just not very exciting.
  
• Add proper writing of Makernotes
  
• Add a unit test to check that empty IFDs are not rendered

XMP

• handle extended XMP data in Jpeg (multiple APP1 segments)