libcamera: software_isp: Move Bayer params init from DebayerCpu to Debayer

Move the initialisation of Bayer params and CCM to a new constructor in the
Debayer class.

Ensure we call the base class constructor from DebayerCpu's constructor in
the expected constructor order Debayer then DebayerCpu.

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

@@ -109,6 +109,17 @@ namespace libcamera {
 
 LOG_DEFINE_CATEGORY(Debayer)
 
+Debayer::Debayer(const GlobalConfiguration &configuration) : bench_(configuration)
+{
+	/* Initialize color lookup tables */
+	for (unsigned int i = 0; i < DebayerParams::kRGBLookupSize; i++) {
+		red_[i] = green_[i] = blue_[i] = i;
+		redCcm_[i] = { static_cast<int16_t>(i), 0, 0 };
+		greenCcm_[i] = { 0, static_cast<int16_t>(i), 0 };
+		blueCcm_[i] = { 0, 0, static_cast<int16_t>(i) };
+	}
+}
+
 Debayer::~Debayer()
 {
 }

src/libcamera/software_isp/debayer.h

@@ -33,7 +33,7 @@ LOG_DECLARE_CATEGORY(Debayer)
 class Debayer : public Object
 {
 public:
-	Debayer(const GlobalConfiguration &configuration) : bench_(configuration) {};
+	Debayer(const GlobalConfiguration &configuration);
 	virtual ~Debayer() = 0;
 
 	virtual int configure(const StreamConfiguration &inputCfg,

src/libcamera/software_isp/debayer_cpu.cpp

@@ -57,14 +57,6 @@ DebayerCpu::DebayerCpu(std::unique_ptr<SwStatsCpu> stats, const GlobalConfigurat
 	 */
 	enableInputMemcpy_ =
 		configuration.option<bool>({ "software_isp", "copy_input_buffer" }).value_or(true);
-
-	/* Initialize color lookup tables */
-	for (unsigned int i = 0; i < DebayerParams::kRGBLookupSize; i++) {
-		red_[i] = green_[i] = blue_[i] = i;
-		redCcm_[i] = { static_cast<int16_t>(i), 0, 0 };
-		greenCcm_[i] = { 0, static_cast<int16_t>(i), 0 };
-		blueCcm_[i] = { 0, 0, static_cast<int16_t>(i) };
-	}
 }
 
 DebayerCpu::~DebayerCpu() = default;