The source from this directory was copied from the vorbis git repository using the update.sh script. The only changes made were those applied by update.sh and the addition/update of Makefile.in and moz.build files for the Mozilla build system. The upstream version used was vorbis v1.3.5-49-c784057 from https://git.xiph.org/vorbis.git Some files are renamed during the copy to prevent clashes with object file names with other Mozilla libraries.