ipa: rkisp1: Add support of Denoise Pre-Filter control

The denoise pre-filter algorithm is a bilateral filter which combines a range
filter and a domain filter. The denoise pre-filter is applied before
demosaicing.

Signed-off-by: Florian Sylvestre <fsylvestre@baylibre.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Umang Jain <umang.jain@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>

src/ipa/rkisp1/ipa_context.cpp

@@ -171,6 +171,17 @@ namespace libcamera::ipa::rkisp1 {
  * \brief Indicates if ISP parameters need to be updated
  */
 
+/**
+ * \var IPAFrameContext::dpf
+ * \brief Context for the Denoise Pre-Filter algorithm
+ *
+ * \var IPAFrameContext::dpf.denoise
+ * \brief Indicates if denoise is activated
+ *
+ * \var IPAFrameContext::dpf.updateParams
+ * \brief Indicates if ISP parameters need to be updated
+ */
+
 /**
  * \var IPAFrameContext::filter
  * \brief Context for the Filter algorithm