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libcamera: Allow access to v4l2_query_ext_ctrl structure for a V4L2 control

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The V4L2Device::controlInfo method simply returns a pointer to the
v4l2_query_ext_ctrl structure for the given control, which has already
been retrieved and stored.

Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
This commit is contained in:
David Plowman
2020-09-07 08:15:57 +01:00
committed by Kieran Bingham
parent 15a98fab79
commit d522ad2549
2 changed files with 17 additions and 0 deletions
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include/libcamera/internal/v4l2_device.h
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@@ -29,6 +29,8 @@ public:
ControlList getControls(const std::vector<uint32_t> &ids);
int setControls(ControlList *ctrls);
const struct v4l2_query_ext_ctrl *controlInfo(uint32_t id) const;
const std::string &deviceNode() const { return deviceNode_; }
std::string devicePath() const;