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Allow control over QEMU audio backend

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When using VNC for graphics + keyboard + mouse, we shouldn't
then use the host OS for audio. Audio should go back over
VNC.

When using SDL for graphics, we should use the host OS for
audio since that's where the display is. We need to allow
certain QEMU env variables to be passed through to guest
too to allow choice of QEMU audio backend.

* qemud/libvirtd.sysconf: Mention QEMU/SDL audio env vars
* src/qemu_conf.c: Passthrough QEMU/SDL audio env for SDL display,
  disable host audio for VNC display
This commit is contained in:
Daniel P. Berrange
2009-09-14 11:23:20 +01:00
parent 401c404811
commit b08e6d38ae
2 changed files with 22 additions and 0 deletions
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8
daemon/libvirtd.sysconf
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@@ -7,3 +7,11 @@
# Override Kerberos service keytab for SASL/GSSAPI
#KRB5_KTNAME=/etc/libvirt/krb5.tab
# Override the QEMU/SDL default audio driver probing when
# starting virtual machines using SDL graphics
#
# NB these have no effect for VMs using VNC
#QEMU_AUDIO_DRV=sdl
#
#SDL_AUDIODRIVER=pulse