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authorLaurent Pinchart <laurent.pinchart@ideasonboard.com>2021-02-08 01:33:29 +0200
committerLaurent Pinchart <laurent.pinchart@ideasonboard.com>2021-03-04 22:29:18 +0200
commit43f051196272c86e7265f24167f3694157501747 (patch)
tree35f2a4e9516a2ae6b8be559ecd00a0c5a49ce54d /package/gentoo/media-libs
parent62c456e1cb04fb8df8a236bc69cab3279d9ce7b5 (diff)
libcamera: pipeline: simple: Support camera sensors that contain an ISP
Camera sensors can include an ISP. For instance, the AP1302 external ISP can be connected to up to two raw camera sensors, and the combination of the sensors and ISP is considered as a (smart) camera sensor from libcamera's point of view. The CameraSensor class has limited support for this already. Extend the simple pipeline handler to support such sensors, by using the media entity corresponding to the ISP instead of the raw camera sensor's entity. We don't need to handle the case where an entity in the SoC would expose the MEDIA_ENT_F_PROC_VIDEO_ISP function, as pipeline containing an ISP would have a dedicated pipeline handler. The implementation is limited as it won't support other multi-entity camera sensors (such as CCS). While this would be worth supporting, we don't have a test platform with a CCS-compatible sensor at this point, so let's not over-engineer the solution. Extending support to CCS (and possibly other sensor topologies) will likely involve helpers that can be used by other pipeline handlers (such as generic graph walk helpers for instance) and extensions to the CameraSensor class. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
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