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authorAndrey Konovalov <andrey.konovalov@linaro.org>2020-10-09 14:17:39 +0300
committerLaurent Pinchart <laurent.pinchart@ideasonboard.com>2020-10-10 01:42:44 +0300
commit05cdef27ab766a199a256c73ef4b338ce4f4dac5 (patch)
treec3f00e4e919df1a4b2eed894f6a6ccc16cefe077 /Documentation/api-html
parent48d304392b25d5ffe38504e7b5ee9d5f1f6dd9af (diff)
libcamera: pipeline: simple: enable mplane devices using contiguous memory
The current simple pipeline handler refuses to work with capture devices which have V4L2_CAP_VIDEO_CAPTURE_MPLANE flag set in the device capabilities field. This is too restrictive, as devices supporting the multi-planar API can be using contiguous memory for semi-planar and planar formats, and this would just work without any changes to libcamera. Drop the guard against MPLANE devices, and replace it with the check of the number of planes in the format the simple pipeline handler is going to use for capture. This will let MPLANE devices which don't use non-contiguous memory for frame buffers to work with the simple pipeline handler. The following code in SimpleCameraData::init() filters out the pixel formats libcamera doesn't support: PixelFormat pixelFormat = videoFormat.first.toPixelFormat(); if (!pixelFormat) continue; So the check for the number of memory planes this patch adds would not trigger until non-contiguous planar formats becomes supported in libcamera, and video devices using these formats are enabled in the simple pipeline handler. Then this check will remind one to review the simple pipeline handler code. Signed-off-by: Andrey Konovalov <andrey.konovalov@linaro.org> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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