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authorPaul Elder <paul.elder@ideasonboard.com>2019-12-06 04:14:52 -0500
committerPaul Elder <paul.elder@ideasonboard.com>2020-01-03 19:53:20 -0500
commit0ce8f2390b5280887a2ac179faf2aa01604cb1cc (patch)
treeea8d04e9013b87217bd8266eab5356c03ded19fa /src/qcam
parenta3b80f3af87198b97f11f0694ff4d7ddde63fc30 (diff)
v4l2: v4l2_compat: Add V4L2 compatibility layer
Add libcamera V4L2 compatibility layer. This initial implementation supports the minimal set of V4L2 operations, which allows getting, setting, and enumerating formats, and streaming frames from a video device. Some data about the wrapped V4L2 video device are hardcoded. Add a build option named 'v4l2' and adjust the build system to selectively compile the V4L2 compatibility layer. For now we match the V4L2 device node to a libcamera camera based on a devnum that a pipeline handler may optionally map to a libcamera camera. Signed-off-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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