libcamera: Add transpose() function to size

Add a transpose() function to size that applies the
Transformation::Transpose operation in the size. This is useful when
handling orientation adjustments.

Signed-off-by: Stefan Klug <stefan.klug@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

src/libcamera/geometry.cpp

@@ -209,6 +209,16 @@ std::string Size::toString() const
  * \return A reference to this object
  */
 
+/**
+ * \fn Size::transpose()
+ * \brief Transpose the size in place
+ *
+ * This function swaps width and height of this size. This effectively applies
+ * the \a Transform::Transpose transformation on this size.
+ *
+ * \return A reference to this object
+ */
+
 /**
  * \fn Size::alignedDownTo(unsigned int hAlignment, unsigned int vAlignment)
  * \brief Align the size down horizontally and vertically