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authorLaurent Pinchart <laurent.pinchart@ideasonboard.com>2020-09-08 10:48:46 +0300
committerLaurent Pinchart <laurent.pinchart@ideasonboard.com>2020-09-16 14:21:28 +0300
commitde20029a582a71a87d99388a62fb63c86e85028a (patch)
tree9bffafeabdb1104444550094fa7cdab06a0f0405 /src/cam/capture.h
parent219cbfe76b5a7d9d8206c71aa6115ff8befcff9b (diff)
android: Protect against null callbacks
According to the Android camera HAL C interface documentation, the camera service is supposed to set callbacks after initializing the HAL and calling get_number_of_cameras(), before any other calls to the module. We rely on this behaviour and use callbacks unconditionally, which would lead to a crash if the camera service behaved incorrectly. While the camera service isn't supposed to behave incorrectly, gracefully handling the error when opening cameras isn't costly, and provides better diagnostic than a crash. While at it, removed an unneeded [[maybe_unused]] attribute. Reported-by: Coverity CID=298638 Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Umang Jain <email@uajain.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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