ipa: ipu3: convert AWB to the new algorithm interface

When the stats are received, pass them with the context to the existing
AWB algorithm. IPAFrameContext now has a new structure to store the
gains calculated by the AWB algorithm.

When an EventFillParams event is received, call prepare() and set the new
gains accordingly in the params structure.
There is no more a need for the IPU3Awb::initialise() function, as the
params are always set in prepare().

Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/src/ipa/ipu3/ipu3_awb.h b/src/ipa/ipu3/ipu3_awb.h
index eeb2920b..12703489 100644
--- a/src/ipa/ipu3/ipu3_awb.h
+++ b/src/ipa/ipu3/ipu3_awb.h
@@ -29,9 +29,8 @@ public:
 	IPU3Awb();
 	~IPU3Awb();
 
-	void initialise(ipu3_uapi_params &params, const Size &bdsOutputSize, struct ipu3_uapi_grid_config &bdsGrid);
-	void calculateWBGains(const ipu3_uapi_stats_3a *stats);
-	void updateWbParameters(ipu3_uapi_params &params);
+	void prepare(IPAContext &context, ipu3_uapi_params *params) override;
+	void process(IPAContext &context, const ipu3_uapi_stats_3a *stats) override;
 
 	struct Ipu3AwbCell {
 		unsigned char greenRedAvg;
@@ -72,6 +71,7 @@ public:
 	};
 
 private:
+	void calculateWBGains(const ipu3_uapi_stats_3a *stats);
 	void generateZones(std::vector<RGB> &zones);
 	void generateAwbStats(const ipu3_uapi_stats_3a *stats);
 	void clearAwbStats();