enabled Headphone monitoring for the 6D
Created originally on Bitbucket by blubbblubb
Enabled the Headphone monitoring feature on the 6D, based on changes by jjtempey85
There are some problems to be worked out: The Headphone monitoring option needs to be toggled off and on before connecting the AV cable and the camera needs to be restarted after taking a picture in Video liveview to reenable audio output.
The stub for "sounddev_active_in" is the same address as "SoundDevActiveIn", this is done the same way for the 650D so i assumed this is ok