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Phase 15: host trusted LADSPA processors with persisted graph state

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Johannes Findeisen 2026-10-27 04:00:27 +01:00
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@ -37,3 +37,20 @@ and supply the notices/source/relinking facilities required by those exact
licenses and linking choices. FLTK's exception does not remove obligations of
other linked libraries. This review covers the current unmodified system-linked
build; static all-in-one bundles and external plugins need a separate review.
## Phase 15 LADSPA review
The optional external host includes the system LADSPA 1.1 header (`ladspa`
1.17-7), copyright Richard W.E. Furse, Paul Barton-Davis and Stefan Westerfeld,
LGPL-2.1-or-later. No header, implementation or plugin binary is copied into the
repository. The host uses the glibc dynamic loader (`-ldl`, LGPL-2.1-or-later),
with no discovery/runtime SDK library or new installed package. LADSPA is mature
and stable; it does not provide modern instrument/MIDI/opaque-state services.
The original fixture in tests/plugins is MIT repository code.
Acceptance dynamically loads the user's installed LADSPA sample amp/sine modules
(package metadata LGPL-2.1-or-later) and SWH inverter (swh-plugins 0.4.17-7,
GPL-2.0-or-later). Testing/loading a user-installed module does not grant the right
to bundle or relicense it. Redistributors must review each chosen module and the
combined distribution's obligations separately; xtc's MIT grant covers only its
original code. No third-party plugin is included in source archives or installs.