The opusfile and opusurl libraries provide a high-level API for decoding and seeking within .opus files on disk or over http(s). opusfile depends on libopus and libogg. opusurl depends on opusfile and openssl. - Fix stack overflow buffering out-of-sequence streams. - Fix possible divide-by-zero. - Fix issues with seeking in the win32 backend. - Fix an issue where the seek algorithm could be confused by stream data changing between reads. - Clean up compiler and scan-build warnings. - Avoid use of the deprecated ftime() function which has Y2038 problems. - Remove undefined behaviour memcpy(NULL) in op_read_native(). - Visual Studio project files updated for libogg 1.3.4 library name change. - Various build systems updates. - Various integration and testing environment improvements. This release is backward-compatible with the previous release. We recommend all users upgrade. Note that because of the removal of certificate store hooks in openssl 1.1.1 and later, there are unfortunately no supported versions of that library which can be used with the code in opusurl to validate https responses against the system certificate store on Windows. Using the system default access to the certificate store on other platforms works fine. Programming documentation is available in-tree and online at https://opus-codec.org/docs/ The library is functional, but there are likely issues we didn't find in our own testing. Please give feedback in #opus on irc.freenode.net, opus@xiph.org, or at https://gitlab.xiph.org/xiph/opusfile.