summaryrefslogtreecommitdiff
path: root/src/cam/kms_sink.cpp
AgeCommit message (Collapse)Author
2021-09-07cam: drm: Support per-plane stride valuesLaurent Pinchart
The stride is not always identical for all planes for multi-planar formats. Semi-planar YUV formats without horizontal subsampling often have a chroma stride equal to twice the luma stride, and tri-planar YUV formats with a 1/2 horizontal subsampling often have a chroma stride equal to half the luma stride. This isn't correctly taken into account when creating a DRM frame buffer, as the same stride is set for all planes. libcamera doesn't report per-plane stride values yet, but uses chroma strides that match the above description for all currently supported platforms. Calculation the chrome strides appropriately in the KMSSink class, and pass them to DRM::createFrameBuffer(). Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2021-08-05cam: kms_sink: Enable display on first frameLaurent Pinchart
Not all display controllers support enabling the display without any active plane. Delay display enabling to the first frame. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Umang Jain <umang.jain@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2021-08-05cam: Add KMS sink classLaurent Pinchart
Add a KMSSink class to display framebuffers through the DRM/KMS API. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Umang Jain <umang.jain@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>