DFDL4S is a generic binary data binding library (Java and C++)  based on the Data Format Description Language (DFDL).

The library interface enables a set of data manipulation operations making use of DFDL schema files to Read and Write binary data (e.g. CCSDS Space Packets).

DFDL4S is provided as Java and C++ library and it is available for several platforms (Windows, Linux and Mac OS X (Intel architecture))

Documentation is located here. API documentation as browsable HTML pages is included in the downloadable archives.



Version 2.2.0 : [March 2024]

  • Align (progress) callback interface between Java and C++ APIs
  • New CRC+Reed Solomon validation tools
  • Bug fixes
  • Apple ARM architecture support (M1/M2/...)



For technical support, please contact the DFDL4S helpdesk at This email address is being protected from spambots. You need JavaScript enabled to view it.


Known Issues

Status Summary
 0056 ASSIGNED  Progress monitor not supported in C++ API