BlackMark 12c4fb8a07 Audio verify: distinguish a failed process-loopback from no-correlation ...

verify_stream_format ignored ProcessLoopbackCapture::start()'s bool. A failed
loopback activation then produced an empty ground-truth signal, so the result was
ok=false -- indistinguishable from "captured fine but the two paths didn't
correlate" -- after burning the whole measurement window capturing only the hook
side for nothing.

Now it checks start(): on failure it restores the ring tap, emits a clear
OutputDebugString diagnostic, and returns immediately (ok=false) instead of
wasting the window. The caller still falls back to the measured guess, but the
cause is now visible.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

2026-06-24 01:43:30 +02:00

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