libcamera: software_isp: Move param select code to Debayer base class

Move the parameter selection code into the Debayer base class in-order to
facilitate reuse of the lookup tables in the eGL shaders.

Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Milan Zamazal <mzamazal@redhat.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

@@ -336,4 +336,32 @@ Debayer::~Debayer()
  * debayer processing.
  */
 
+/**
+ * \fn void Debayer::setParams(DebayerParams &params)
+ * \brief Select the bayer params to use for the next frame debayer
+ * \param[in] params The parameters to be used in debayering
+ */
+void Debayer::setParams(DebayerParams &params)
+{
+	green_ = params.green;
+	greenCcm_ = params.greenCcm;
+	if (swapRedBlueGains_) {
+		red_ = params.blue;
+		blue_ = params.red;
+		redCcm_ = params.blueCcm;
+		blueCcm_ = params.redCcm;
+		for (unsigned int i = 0; i < 256; i++) {
+			std::swap(redCcm_[i].r, redCcm_[i].b);
+			std::swap(greenCcm_[i].r, greenCcm_[i].b);
+			std::swap(blueCcm_[i].r, blueCcm_[i].b);
+		}
+	} else {
+		red_ = params.red;
+		blue_ = params.blue;
+		redCcm_ = params.redCcm;
+		blueCcm_ = params.blueCcm;
+	}
+	gammaLut_ = params.gammaLut;
+}
+
 } /* namespace libcamera */

src/libcamera/software_isp/debayer.h

@@ -83,6 +83,9 @@ public:
 
 private:
 	virtual Size patternSize(PixelFormat inputFormat) = 0;
+
+protected:
+	void setParams(DebayerParams &params);
 };
 
 } /* namespace libcamera */

src/libcamera/software_isp/debayer_cpu.cpp

@@ -758,25 +758,7 @@ void DebayerCpu::process(uint32_t frame, FrameBuffer *input, FrameBuffer *output
 	for (const FrameBuffer::Plane &plane : output->planes())
 		dmaSyncers.emplace_back(plane.fd, DmaSyncer::SyncType::Write);
 
-	green_ = params.green;
-	greenCcm_ = params.greenCcm;
-	if (swapRedBlueGains_) {
-		red_ = params.blue;
-		blue_ = params.red;
-		redCcm_ = params.blueCcm;
-		blueCcm_ = params.redCcm;
-		for (unsigned int i = 0; i < 256; i++) {
-			std::swap(redCcm_[i].r, redCcm_[i].b);
-			std::swap(greenCcm_[i].r, greenCcm_[i].b);
-			std::swap(blueCcm_[i].r, blueCcm_[i].b);
-		}
-	} else {
-		red_ = params.red;
-		blue_ = params.blue;
-		redCcm_ = params.redCcm;
-		blueCcm_ = params.blueCcm;
-	}
-	gammaLut_ = params.gammaLut;
+	setParams(params);
 
 	/* Copy metadata from the input buffer */
 	FrameMetadata &metadata = output->_d()->metadata();