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, 8 insertions, 0 deletions

diff --git a/src/ipa/ipu3/ipa_context.h b/src/ipa/ipu3/ipa_context.h
index 4b12f129..24dd8bf7 100644
--- a/src/ipa/ipu3/ipa_context.h
+++ b/src/ipa/ipu3/ipa_context.h
@@ -25,6 +25,14 @@ struct IPASessionConfiguration {
 
 struct IPAFrameContext {
 	struct {
+		struct {
+			double red;
+			double green;
+			double blue;
+		} gains;
+	} awb;
+
+	struct {
 		struct ipu3_uapi_gamma_corr_lut gammaCorrection;
 	} toneMapping;
 };