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L-Acoustics / avdecc

A set of open source libraries for controlling AVB entities using the AVDECC (IEEE 1722.1) protocol compliant to Avnu Milan Specifications
GNU Lesser General Public License v3.0
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Add a new controller static API to compute a checksum of the AEM of a controlled entity #124

Closed christophe-calmejane closed 1 year ago

christophe-calmejane commented 1 year ago

A static method taking a ControlledEntity and returning a checksum of the complete AEM (tree and static information). Can be used from a json file with deserializeControlledEntityFromJson to compute the checksum (offline mode), or directly from a live entity.

This API would be helpful for test and validation tools to store and compare the entity_model_id field with that checksum in a database. For a given entity_model_id, there should only exist a single checksum.

The API would need to support versioning, as the returned checksum will change as new descriptors are processed during the computation of the checksum (as well as new/different static fields are added to 1722.1). Maybe have a version parameter passed to the API (and have the latest version being used by default), the implementation would have to be able to generate older version of the checksum.