ipa: raspberrypi: Add line length to DeviceStatus

Add a lineLength field to the DeviceStatus structure to store the line
length used for a particular frame.

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

src/ipa/raspberrypi/controller/device_status.cpp

@@ -12,6 +12,7 @@ std::ostream &operator<<(std::ostream &out, const DeviceStatus &d)
 {
 	out << "Exposure: " << d.shutterSpeed
 	    << " Frame length: " << d.frameLength
+	    << " Line length: " << d.lineLength
 	    << " Gain: " << d.analogueGain;
 
 	if (d.aperture)

src/ipa/raspberrypi/controller/device_status.h

@@ -19,7 +19,7 @@
 struct DeviceStatus {
 	DeviceStatus()
 		: shutterSpeed(std::chrono::seconds(0)), frameLength(0),
-		  analogueGain(0.0)
+		  lineLength(std::chrono::seconds(0)), analogueGain(0.0)
 	{
 	}
 
@@ -29,6 +29,8 @@ struct DeviceStatus {
 	libcamera::utils::Duration shutterSpeed;
 	/* frame length given in number of lines */
 	uint32_t frameLength;
+	/* line length for the current frame */
+	libcamera::utils::Duration lineLength;
 	double analogueGain;
 	/* 1.0/distance-in-metres, or 0 if unknown */
 	std::optional<double> lensPosition;