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authorLaurent Pinchart <laurent.pinchart@ideasonboard.com>2024-02-26 16:24:27 +0200
committerLaurent Pinchart <laurent.pinchart@ideasonboard.com>2024-03-15 13:00:49 +0200
commitc5a8152af269e798297debcf6ab1bfb5ed82ebc1 (patch)
treea2635a7a570158ffbaaf6f37eb9bf628288b6d1f /Documentation/index.rst
parente8f01b37e809bd7b101e6528b59c314ea3268068 (diff)
libcamera: v4l2_subdevice: Add V4L2Subdevice::Route structure
The V4L2Subdevice class deals with streams in two places: - In routing tables, streams as expressed as a pad number and a stream number in a v4l2_subdev_route instance. - In the format and selection get and set functions, streams as expressed using the Stream structure, which binds the pad number and stream number. Expressing streams in different ways requires pipeline handlers and other helpers to convert between the two representations. This isn't much of an issue yet as libcamera has little stream-aware code, but it is expected to increasingly become a burden. To simplify the API, introduce a V4L2Subdevice::Route structure that mimicks the kernel v4l2_subdev_route structure but represents streams as V4L2Subdevice::Stream instances. This will improve seamless integration of routes, formats and selection rectangles. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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