libcamera: software_isp: lut: Make contrast available in debayer params

Provide the contrast used in IPA to Bayer parameters. Similar to the
calculated Gamma value we will pass this value into the debayer fragment
shader for further consumption.

Reviewed-by: Milan Zamazal <mzamazal@redhat.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

src/libcamera/software_isp/debayer.cpp

@@ -115,6 +115,11 @@ namespace libcamera {
  * \brief Gamma value for the GPUISP
  */
 
+/**
+ * \var DebayerParams::contrast
+ * \brief Contrast value for GPUISP
+ */
+
 /**
  * \class Debayer
  * \brief Base debayering class