AudioBackendType::WasapiExclusive, offered on Windows, plus the selection arm
that opens the exclusive stream before the shared one - the same shape ALSA
Direct has on Linux.
No separate enumeration was needed: 249adc77b already made AudioDevice.id the
WASAPI ENDPOINT ID, which is exactly what WasapiDirectStream::new wants. That
fix turns out to have been the load-bearing one; by friendly name this could
not have addressed a device at all.
Two deliberate fallbacks, both of which prefer a resampled track to silence:
- No device chosen: there is nothing to open exclusively, so it says so and
uses the shared stream. Grabbing the default DAC would be deciding for the
user.
- The endpoint refuses the rate: warn and fall through. A DAC that will not
take 192/24 in exclusive still plays it shared.
The mode LED lights EXCL only when a device IS chosen, because with none the
player falls through to shared - a lit EXCL there would be the LED lying,
which is the one thing output_labels must never do.
backendIsWasapi joins the settings document, which is what unhides the
Exclusive-mode and DSD rows that fc0d35e29 gated on it.
229 + 71 + 110 tests pass; five QML audits pass.
cc
vicrodh
09fcdeaa06