Capture and playback now go through AudioCapture/AudioPlayback interfaces
with two implementations: PipeWire, used for the system default and for
every pw: device when a session is reachable, and Java Sound for the raw
ALSA devices and other platforms. The PipeWire binding is FFM-based
(PipeWireLibrary, PipeWireSession, PipeWireStream, SpaPod) and enumerates
the graph's real devices, so each stream shows up separately in volume
mixers.
Lines are opened with a negotiated channel count instead of a fixed mono
format: OPUS_MUSIC transmits the stereo capture as-is, OPUS_VOICE keeps
transmitting the mono downmix so the pre-processing chain and VAD still
see a single channel. Java Sound enumeration asks only for "a mixer that
can capture/play" so the PipeWire and PulseAudio ALSA plugins are no
longer hidden by their narrow format lists.
The Java Sound classes are renamed to Desktop* to match what they now
are, and JUnit plus a SpaPod round-trip test are wired into the build.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
ericek111
0333b92ce5