[libcamera-devel] [PATCH v4 01/13] libcamera: v4l2_controls: Add min and max to V4L2ControlInfo
Laurent Pinchart
laurent.pinchart at ideasonboard.com
Mon Jul 1 22:14:52 CEST 2019
Add min() and max() methods to V4L2ControlInfo to report the control's
minimum and maximum value respectively.
Signed-off-by: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham at ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo at jmondi.org>
---
src/libcamera/include/v4l2_controls.h | 6 ++++++
src/libcamera/v4l2_controls.cpp | 14 ++++++++++++++
2 files changed, 20 insertions(+)
diff --git a/src/libcamera/include/v4l2_controls.h b/src/libcamera/include/v4l2_controls.h
index 2c8cb9003f25..0047efab11fa 100644
--- a/src/libcamera/include/v4l2_controls.h
+++ b/src/libcamera/include/v4l2_controls.h
@@ -28,11 +28,17 @@ public:
size_t size() const { return size_; }
const std::string &name() const { return name_; }
+ int64_t min() const { return min_; }
+ int64_t max() const { return max_; }
+
private:
unsigned int id_;
unsigned int type_;
size_t size_;
std::string name_;
+
+ int64_t min_;
+ int64_t max_;
};
class V4L2Control
diff --git a/src/libcamera/v4l2_controls.cpp b/src/libcamera/v4l2_controls.cpp
index 78888de29642..af017bce48ba 100644
--- a/src/libcamera/v4l2_controls.cpp
+++ b/src/libcamera/v4l2_controls.cpp
@@ -74,6 +74,8 @@ V4L2ControlInfo::V4L2ControlInfo(const struct v4l2_query_ext_ctrl &ctrl)
type_ = ctrl.type;
name_ = static_cast<const char *>(ctrl.name);
size_ = ctrl.elem_size * ctrl.elems;
+ min_ = ctrl.minimum;
+ max_ = ctrl.maximum;
}
/**
@@ -100,6 +102,18 @@ V4L2ControlInfo::V4L2ControlInfo(const struct v4l2_query_ext_ctrl &ctrl)
* \return The V4L2 control user readable name
*/
+/**
+ * \fn V4L2ControlInfo::min()
+ * \brief Retrieve the control minimum value
+ * \return The V4L2 control minimum value
+ */
+
+/**
+ * \fn V4L2ControlInfo::max()
+ * \brief Retrieve the control maximum value
+ * \return The V4L2 control maximum value
+ */
+
/**
* \class V4L2Control
* \brief A V4L2 control value
--
Regards,
Laurent Pinchart
More information about the libcamera-devel
mailing list