libcamera: geometry: SizeRange: Add constructor for a single size

The SizeRange can describe a single size where min == max. Add a
constructor to help create such a description.

Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

include/libcamera/geometry.h

@@ -72,6 +72,11 @@ struct SizeRange {
 	{
 	}
 
+	SizeRange(unsigned int width, unsigned int height)
+		: min(width, height), max(width, height)
+	{
+	}
+
 	SizeRange(unsigned int minW, unsigned int minH,
 		  unsigned int maxW, unsigned int maxH)
 		: min(minW, minH), max(maxW, maxH)

src/libcamera/geometry.cpp

@@ -196,6 +196,13 @@ bool operator<(const Size &lhs, const Size &rhs)
  * \brief Construct a size range initialized to 0
  */
 
+/**
+ * \fn SizeRange::SizeRange(unsigned int width, unsigned int height)
+ * \brief Construct a size range representing a single size
+ * \param[in] width The size width
+ * \param[in] height The size height
+ */
+
 /**
  * \fn SizeRange::SizeRange(unsigned int minW, unsigned int minH,
  *			    unsigned int maxW, unsigned int maxH)