Software playback loses preconfigured volume during audio-output initialization

[1096bimu]

What happened?

The engine remembers the public volume property, but applies it to the software host before its audio output exists. That write is silently lost. The engine should reapply the requested volume when creating or replacing the audio output.

Steps to reproduce

play a file with software decode path, volume is always reset to maximum.

AetherEngine version or commit SHA

7.20.0

Host app

AetherPlayer

Platform

macOS

OS version

MacOS 27

Device / chip

Mac Studio

Playback path

Software (dav1d) host

Source media (for playback bugs)

No response

Error codes / log lines

Anything else

No response

[superuser404notfound]

Thanks for the precise report, the diagnosis was exactly right. The engine handed its stored volume to the freshly built host before load(), and both FFmpeg hosts (SoftwarePlaybackHost and the audio-only AudioPlaybackHost) only forwarded it to an AudioOutput that did not exist yet. Both hosts now keep the volume themselves and apply it to every output they build (#663).

Released in 7.21.1 (228e8e0). AetherPlayer main is already bumped to it. Leaving this open until it is confirmed on the Mac Studio.