Proposal: rekordbox USB Export (PDB/ANLZ) for CDJ/XDJ hardware - #20
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Proposal: rekordbox USB Export (PDB/ANLZ) for CDJ/XDJ hardware#20sparkly-quasar wants to merge 1 commit into
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Design document for adding a rekordbox USB exporter to Mixxx, following the template. Covers the unencrypted PDB/ANLZ format (widest hardware reach, legally cleanest); OneLibrary is an explicit non-goal. Includes a standalone Qt-free writer library + round-trip verifier, a Mixxx adapter mirroring the Engine Prime exporter, and the rekordcrate-vs-C++ tradeoff as an open question for maintainers. Related: mixxxdj/mixxx#9463, #10321, #12126.
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Summary
This proposal adds a rekordbox USB exporter to Mixxx: a writer for the unencrypted
export.pdb(DeviceSQL) and per-track
ANLZanalysis files, plus thePIONEER/USB layout and audio copy — thesame "export my library to foreign DJ hardware" flow Mixxx already ships for Engine Prime, but for
Pioneer/AlphaTheta CDJ/XDJ gear. It addresses the long-standing #9463 / #10321 requests and
implements against the exporter-abstraction idea in #12126.
Scope is deliberately narrowed to the classic unencrypted PDB/ANLZ format (widest hardware reach
and legally cleanest). The encrypted OneLibrary / Device Library Plus format (#15556) is an explicit
non-goal here, for DMCA §1201 reasons spelled out in the doc.
Status (this is not a paper design)
export.pdb(all 20standard tables + the 8-colour palette) and per-track ANLZ (beat grids + hot/memory cues). Every
output is cross-checked against two independent real-format parsers (pyrekordbox for ANLZ, a
crate-digger-spec Kaitai parser for PDB) and diffed field-for-field against genuine rekordbox files.
(
RekordboxExportJob+ dialog mirroring the Engine DJ exporter, behind aREKORDBOX_EXPORTCMakeoption) compiles and links on macOS (Intel + Apple Silicon), Windows, and Linux via CI.
(playback on physical CDJ/XDJ hardware) haven't been run yet. CDJ hardware testers are very
welcome.
Open question for maintainers
The doc treats C++ writer vs. a rekordcrate-backed (Rust) path as a genuinely open decision and
is structured so the serializer could be swapped without redoing the Mixxx adapter. I have no
attachment to my code being the answer — I'd like this to move #9463 forward however is most useful.
I'm a long-time Mixxx user offering this back to the community; happy to iterate on the doc based on
review.