ipa: rpi: Provide the camera helper with the hardware configuration

Add a CamHelper::setHwConfig() helper used by the IPA to set the
hardware configuration in use by the pipeline. This will be needed by
the IMX500 camera helper in a future commit to determine if the
metadata buffer is strided.

Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: David Plowman <david.plowman@raspberrypi.com>
Acked-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

src/ipa/rpi/cam_helper/cam_helper.cpp

@@ -156,6 +156,11 @@ void CamHelper::setCameraMode(const CameraMode &mode)
 	}
 }
 
+void CamHelper::setHwConfig(const Controller::HardwareConfig &hwConfig)
+{
+	hwConfig_ = hwConfig;
+}
+
 bool CamHelper::sensorEmbeddedDataPresent() const
 {
 	return false;

src/ipa/rpi/cam_helper/cam_helper.h

@@ -71,6 +71,7 @@ public:
 	CamHelper(std::unique_ptr<MdParser> parser, unsigned int frameIntegrationDiff);
 	virtual ~CamHelper();
 	void setCameraMode(const CameraMode &mode);
+	void setHwConfig(const Controller::HardwareConfig &hwConfig);
 	virtual void prepare(libcamera::Span<const uint8_t> buffer,
 			     Metadata &metadata);
 	virtual void process(StatisticsPtr &stats, Metadata &metadata);
@@ -101,6 +102,7 @@ protected:
 
 	std::unique_ptr<MdParser> parser_;
 	CameraMode mode_;
+	Controller::HardwareConfig hwConfig_;
 
 private:
 	/*

src/ipa/rpi/common/ipa_base.cpp

@@ -151,6 +151,7 @@ int32_t IpaBase::init(const IPASettings &settings, const InitParams &params, Ini
 	lensPresent_ = params.lensPresent;
 
 	controller_.initialise();
+	helper_->setHwConfig(controller_.getHardwareConfig());
 
 	/* Return the controls handled by the IPA */
 	ControlInfoMap::Map ctrlMap = ipaControls;