ipa: ipu3: Calculate line duration from IPACameraSensorInfo

Squash \todo by calculating line duration from IPACameraSensorInfo,
now passed in, to IPU3Agc::initialise().

Since line duration is now calculated from real values, store it as a
private member in IPU3Agc class. As a further step, replace the
associated global constant, kMaxExposureTime, with a private IPU3Agc
class member as well, and assign its value correspondingly in
IPU3Agc::initialise(), similar to previous precedence.

Signed-off-by: Umang Jain <umang.jain@ideasonboard.com>
Tested-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>

1 files changed, 6 insertions, 1 deletions

diff --git a/src/ipa/ipu3/ipu3_agc.h b/src/ipa/ipu3/ipu3_agc.h
index bfdf45d1..99a582a9 100644
--- a/src/ipa/ipu3/ipu3_agc.h
+++ b/src/ipa/ipu3/ipu3_agc.h
@@ -18,6 +18,8 @@
 
 namespace libcamera {
 
+class IPACameraSensorInfo;
+
 namespace ipa::ipu3 {
 
 class IPU3Agc : public Algorithm
@@ -26,7 +28,7 @@ public:
 	IPU3Agc();
 	~IPU3Agc() = default;
 
-	void initialise(struct ipu3_uapi_grid_config &bdsGrid);
+	void initialise(struct ipu3_uapi_grid_config &bdsGrid, const IPACameraSensorInfo &sensorInfo);
 	void process(const ipu3_uapi_stats_3a *stats, uint32_t &exposure, uint32_t &gain);
 	bool converged() { return converged_; }
 	bool updateControls() { return updateControls_; }
@@ -49,6 +51,9 @@ private:
 	double iqMean_;
 	double gamma_;
 
+	double lineDuration_;
+	double maxExposureTime_;
+
 	double prevExposure_;
 	double prevExposureNoDg_;
 	double currentExposure_;