Marc-André Lureau 1618bea984 audio: introduce AudioMixengBackend ...

Introduce a sub-class for current "audio_driver" based implementations.
Future AudioBackend implementations can do without it.

Next cleanup will actually remove "audio_driver" struct altogether and
make the subclass proper QOM objects.

Public APIs still rely on backend being an AudioMixeng. They will
assert() if not. This will be addressed later to allow other backends.

Note that the initial naming proposed for this object was AudioDriver,
however the semantics for "driver" is already overloaded and leads to
confusion, in particular with the QAPI AudiodevDriver. The defining
characteristic is of using QEMU's software mixing engine, so
AudioMixengBackend.

Reviewed-by: Mark Cave-Ayland <mark.caveayland@nutanix.com>
Reviewed-by: Akihiko Odaki <odaki@rsg.ci.i.u-tokyo.ac.jp>
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>

2026-02-23 14:28:57 +01:00

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