jpx_compatibility::test_decode_completely

Call this function (optionally after using set_standard_feature_support and/or set_vendor_feature_support) to evaluate the "decode completely" expression in the reader requirements box, returning true if the application should be able to decode the JPX data source to obtain the result intended by its creator.

The features required to decode the data source completely may be less than those required to fully understand all aspects of the data source. As an example, an editor may have preserved some elements from an original source file which it did not even fully understand. These features are not required to achieve the intent of the editor, but they would be required to fully understand all aspects of the data source.