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OmikronApexandClaude Fable 5
eeb83cbdbc
Replaces the four hand-maintained copies of the packed-LR SPSC design (split-mode output ring, per-InputDeviceSlot rings, stream-sink ring, renderer-bus ring) with slopsmith::PackedStereoRing<NFrames> (src/audio/engine/PackedStereoRing.h). The template owns the storage, power-of-two/lock-free asserts, pack/unpack, producer publish, reset, the w<r resync, and the lapped catch-up; per-site consumer policy (pull-vs- consume skew, renderer prime/fill-clamp) stays verbatim at the call sites. Pure code move per the TLC plan — no behavior change; the renderer bus's control-thread readIndex write on disable (deep-read §4) is deliberately preserved and gets its flush-flag fix in phase 2. Unit-tested in tests/engine_units/packed_stereo_ring_test.cpp: threaded tear-freedom under lapping (2M frames), drop-oldest catch-up, index-reset resync, pull-vs-consume skew. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>