ipa: raspberry: Port to the new AEGC controls

The newly introduced controls to drive the AEGC algorithm allow to
control the computation of the exposure time and analogue gain
separately.

The RPi AEGC implementation already computes the shutter and gain values
separately but does not expose separate functions to control them.

Augment the AgcAlgorithm interface to allow pausing/resuming the shutter
and gain automatic computations separately and plumb them to the newly
introduced controls.

Add safety checks to ignore ExposureTime and AnalogueGain values if the
algorithms are not paused, and report the correct AeState value by
checking if both algorithms have been paused or if they have converged.

Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Stefan Klug <stefan.klug@ideasonboard.com>
Reviewed-by: Naushir Patuck <naush@raspberrypi.com>
Acked-by: David Plowman <david.plowman@raspberrypi.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

1 files changed, 6 insertions, 2 deletions

diff --git a/src/ipa/rpi/controller/agc_algorithm.h b/src/ipa/rpi/controller/agc_algorithm.h
index c9782857..fdaa10e6 100644
--- a/src/ipa/rpi/controller/agc_algorithm.h
+++ b/src/ipa/rpi/controller/agc_algorithm.h
@@ -30,8 +30,12 @@ public:
 	virtual void setMeteringMode(std::string const &meteringModeName) = 0;
 	virtual void setExposureMode(std::string const &exposureModeName) = 0;
 	virtual void setConstraintMode(std::string const &contraintModeName) = 0;
-	virtual void enableAuto() = 0;
-	virtual void disableAuto() = 0;
+	virtual void enableAutoExposure() = 0;
+	virtual void disableAutoExposure() = 0;
+	virtual bool autoExposureEnabled() const = 0;
+	virtual void enableAutoGain() = 0;
+	virtual void disableAutoGain() = 0;
+	virtual bool autoGainEnabled() const = 0;
 	virtual void setActiveChannels(const std::vector<unsigned int> &activeChannels) = 0;
 };