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Revision b870472d

IDb870472db5c90d3c96f4b85fbdfce87ce8076fc8

Added by H. Peter Anvin over 12 years ago

usb: add audio device model

This brings a usb audio device to qemu. Output only, fixed at
16bit stereo @ 480000 Hz. Based on a patch from
H. Peter Anvin <>

Usage: add '-device usb-audio' to your qemu command line.

Works sorta ok on a idle machine. Known issues:

  • Is very sensitive to latencies.
  • Burns quite some CPU due to usb polling.

In short: It brings the qemu usb emulation to its limits. Enjoy!

Signed-off-by: Gerd Hoffmann <>

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