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authorNiklas Söderlund <niklas.soderlund@ragnatech.se>2019-04-14 02:59:58 +0200
committerNiklas Söderlund <niklas.soderlund@ragnatech.se>2019-05-17 20:38:34 +0200
commit9f7649a1f40e1f6625385e3c9f11745a24a4a253 (patch)
tree7eabb6d6077b89fb9abed8fb52142e27fcf52fc5 /test/event.cpp
parentd07975950caded00edd9ba240f5737f10ae828a7 (diff)
libcamera: camera: Lock the pipeline handler in acquire()
To allow more than one application using libcamera simultaneously there can be no overlap between which cameras are in use by which user. As a camera is part of a pipeline handler and there might be shared resources between all cameras exposed by that pipeline handler it's not enough to to only lock access to a single camera, all cameras from that pipeline need to be tied to the same process. Allow for this by locking the whole pipeline when one of its cameras is acquired by the user. Other processes can still enumerate and list all cameras in the system but can't acquire a camera from a locked pipeline handler. Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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