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authorPhi-Bang Nguyen <pnguyen@baylibre.com>2021-04-02 17:00:49 +0200
committerLaurent Pinchart <laurent.pinchart@ideasonboard.com>2022-08-03 17:44:34 +0300
commit3ee52c167f903b12563861797946937989c3c1ab (patch)
tree78fec8c850a4e68276efc0c9707f9745fc990063 /LICENSES/GPL-2.0-only.txt
parentbd25118dec87c2ad5a3463ec89df327255ab9422 (diff)
libcamera: pipeline: simple: Walk pipeline using subdev internal routing
When traversing the media graph to discover a pipeline from the camera sensor to a video node, all sink-to-source paths inside subdevs are considered. This can lead to invalid paths being followed, when a subdev has restrictions on its internal routing. The V4L2 API supports exposing subdev internal routing to userspace. Make use of this feature, when implemented by a subdev, to restrict the internal paths to the currently active routes. If a subdev doesn't implement the internal routing operations, all source pads are considered, as done today. This change is needed to properly support multiple sensors with devices such as the NXP i.MX8 ISI or the MediaTek i350 and i500 SENINF. Support for changing routes dynamically will be added later when required. Signed-off-by: Phi-Bang Nguyen <pnguyen@baylibre.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Tested-by: Jacopo Mondi <jacopo@jmondi.org>
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