ipa: raspberrypi: Return an error code from Algorithm::read()

When encountering errors, the Algorithm::read() function either uses
LOG(Fatal) or throws exceptions from the boost property_tree functions.
To prepare for replacing boost JSON parse with the YamlParser class,
give the Algorithm::read() function the ability to return an error code,
and propagate it all the way to the IPA module init() function.

All algorithm classes return a hardcoded 0 value for now, subsequent
commits will change that.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Naushir Patuck <naush@raspberrypi.com>
Tested-by: Naushir Patuck <naush@raspberrypi.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/ipa/raspberrypi/controller/rpi/lux.h b/src/ipa/raspberrypi/controller/rpi/lux.h
index 26af8185..6416dfb5 100644
--- a/src/ipa/raspberrypi/controller/rpi/lux.h
+++ b/src/ipa/raspberrypi/controller/rpi/lux.h
@@ -22,7 +22,7 @@ class Lux : public Algorithm
 public:
 	Lux(Controller *controller);
 	char const *name() const override;
-	void read(boost::property_tree::ptree const &params) override;
+	int read(boost::property_tree::ptree const &params) override;
 	void prepare(Metadata *imageMetadata) override;
 	void process(StatisticsPtr &stats, Metadata *imageMetadata) override;
 	void setCurrentAperture(double aperture);