Package bench contains the benchmarks for the JBIG2 decoder and encoder.
In order to invoke the tests the environmental variable 'UNIDOC_JBIG2_TESTDATA' with the path to
the directory containing pdf files with some jbig2 filters must be provided.
These benchmarks uses 'UNIDOC_JBIG2_TEST_IMAGES' environmental variable which should contain the path
to the directory containing test image files.