FLP Implementation Notes
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As of 23th Nov 2023, the FruityPlug SDK has no licence, so it's not clear if Image-Line would approve our endeavour to better integrate with their host, and it probably depends upon the quality of our implementation? Do not release FLP yet.
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The engineering at Image-Line is extremely impressive - very far from the early reputation of FLStudio - as evidenced by Vocodex and Harmor plug-ins, or the fact the public SDK still work 10 years later.
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There are a lot of features we don't do currently:
- "Hybrid" plugins have voices managed by the host, which is very interesting. No support in Dplug.
- MIDI CC, Channel pressure, Channel Pitch Bend are not well supported.
- Because Dplug is based upon a MIDI 1.0 abstraction, it doesn't support per-note pitch bend very well. But FL format does this since forever.
- The goal was to fit the "common denominator" of Dplug plug-ins first.
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Do not create name clashes, for example it's important that your plug-in name is unique in the FL universe. FLStudio plugin directories do nothing to avoid name clashes AFAIK.
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Built-in 32-bit plugins were removed from FLStudio in version 21. The bridge still work, but the builtin effects ship in 64-bit only. That's why we don't support 32-bit FLP in Dplug.
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Because FruityPlug isn't that popular a format, Image-Line has limited time to document and update the SDK, and the new changes aren't reflected in the public SDK.