6 files changed, 19 insertions, 4 deletions
diff --git a/src/ipa/raspberrypi/cam_helper.cpp b/src/ipa/raspberrypi/cam_helper.cpp
index 1ec3f03e..3c6afce7 100644
--- a/src/ipa/raspberrypi/cam_helper.cpp
+++ b/src/ipa/raspberrypi/cam_helper.cpp
@@ -187,6 +187,7 @@ void CamHelper::parseEmbeddedData(Span<const uint8_t> buffer,
 
 	deviceStatus.shutter_speed = parsedDeviceStatus.shutter_speed;
 	deviceStatus.analogue_gain = parsedDeviceStatus.analogue_gain;
+	deviceStatus.frame_length = parsedDeviceStatus.frame_length;
 
 	LOG(IPARPI, Debug) << "Metadata updated - " << deviceStatus;
 
diff --git a/src/ipa/raspberrypi/cam_helper_imx219.cpp b/src/ipa/raspberrypi/cam_helper_imx219.cpp
index 4d68e01f..a3caab71 100644
--- a/src/ipa/raspberrypi/cam_helper_imx219.cpp
+++ b/src/ipa/raspberrypi/cam_helper_imx219.cpp
@@ -30,7 +30,10 @@ using namespace RPiController;
 constexpr uint32_t gainReg = 0x157;
 constexpr uint32_t expHiReg = 0x15a;
 constexpr uint32_t expLoReg = 0x15b;
-constexpr std::initializer_list<uint32_t> registerList [[maybe_unused]] = { expHiReg, expLoReg, gainReg };
+constexpr uint32_t frameLengthHiReg = 0x160;
+constexpr uint32_t frameLengthLoReg = 0x161;
+constexpr std::initializer_list<uint32_t> registerList [[maybe_unused]]
+	= { expHiReg, expLoReg, gainReg, frameLengthHiReg, frameLengthLoReg };
 
 class CamHelperImx219 : public CamHelper
 {
@@ -93,6 +96,7 @@ void CamHelperImx219::PopulateMetadata(const MdParser::RegisterMap &registers,
 
 	deviceStatus.shutter_speed = Exposure(registers.at(expHiReg) * 256 + registers.at(expLoReg));
 	deviceStatus.analogue_gain = Gain(registers.at(gainReg));
+	deviceStatus.frame_length = registers.at(frameLengthHiReg) * 256 + registers.at(frameLengthLoReg);
 
 	metadata.Set("device.status", deviceStatus);
 }
diff --git a/src/ipa/raspberrypi/cam_helper_imx477.cpp b/src/ipa/raspberrypi/cam_helper_imx477.cpp
index efd1a589..91d05d92 100644
--- a/src/ipa/raspberrypi/cam_helper_imx477.cpp
+++ b/src/ipa/raspberrypi/cam_helper_imx477.cpp
@@ -23,7 +23,10 @@ constexpr uint32_t expHiReg = 0x0202;
 constexpr uint32_t expLoReg = 0x0203;
 constexpr uint32_t gainHiReg = 0x0204;
 constexpr uint32_t gainLoReg = 0x0205;
-constexpr std::initializer_list<uint32_t> registerList = { expHiReg, expLoReg, gainHiReg, gainLoReg };
+constexpr uint32_t frameLengthHiReg = 0x0340;
+constexpr uint32_t frameLengthLoReg = 0x0341;
+constexpr std::initializer_list<uint32_t> registerList =
+	{ expHiReg, expLoReg, gainHiReg, gainLoReg, frameLengthHiReg, frameLengthLoReg  };
 
 class CamHelperImx477 : public CamHelper
 {
@@ -81,6 +84,7 @@ void CamHelperImx477::PopulateMetadata(const MdParser::RegisterMap &registers,
 
 	deviceStatus.shutter_speed = Exposure(registers.at(expHiReg) * 256 + registers.at(expLoReg));
 	deviceStatus.analogue_gain = Gain(registers.at(gainHiReg) * 256 + registers.at(gainLoReg));
+	deviceStatus.frame_length = registers.at(frameLengthHiReg) * 256 + registers.at(frameLengthLoReg);
 
 	metadata.Set("device.status", deviceStatus);
 }
diff --git a/src/ipa/raspberrypi/controller/device_status.cpp b/src/ipa/raspberrypi/controller/device_status.cpp
index 7b8218ca..f052ea8b 100644
--- a/src/ipa/raspberrypi/controller/device_status.cpp
+++ b/src/ipa/raspberrypi/controller/device_status.cpp
@@ -11,6 +11,7 @@ using namespace libcamera; /* for the Duration operator<< overload */
 std::ostream &operator<<(std::ostream &out, const DeviceStatus &d)
 {
 	out << "Exposure: " << d.shutter_speed
+	    << " Frame length: " << d.frame_length
 	    << " Gain: " << d.analogue_gain
 	    << " Aperture: " << d.aperture
 	    << " Lens: " << d.lens_position
diff --git a/src/ipa/raspberrypi/controller/device_status.h b/src/ipa/raspberrypi/controller/device_status.h
index ec4bbe73..c4a5d9c8 100644
--- a/src/ipa/raspberrypi/controller/device_status.h
+++ b/src/ipa/raspberrypi/controller/device_status.h
@@ -17,8 +17,9 @@
 
 struct DeviceStatus {
 	DeviceStatus()
-		: shutter_speed(std::chrono::seconds(0)), analogue_gain(0.0),
-		  lens_position(0.0), aperture(0.0), flash_intensity(0.0)
+		: shutter_speed(std::chrono::seconds(0)), frame_length(0),
+		  analogue_gain(0.0), lens_position(0.0), aperture(0.0),
+		  flash_intensity(0.0)
 	{
 	}
 
@@ -26,6 +27,8 @@ struct DeviceStatus {
 
 	/* time shutter is open */
 	libcamera::utils::Duration shutter_speed;
+	/* frame length given in number of lines */
+	uint32_t frame_length;
 	double analogue_gain;
 	/* 1.0/distance-in-metres, or 0 if unknown */
 	double lens_position;
diff --git a/src/ipa/raspberrypi/raspberrypi.cpp b/src/ipa/raspberrypi/raspberrypi.cpp
index ebae2c55..53d7aae6 100644
--- a/src/ipa/raspberrypi/raspberrypi.cpp
+++ b/src/ipa/raspberrypi/raspberrypi.cpp
@@ -1015,9 +1015,11 @@ void IPARPi::fillDeviceStatus(const ControlList &sensorControls)
 
 	int32_t exposureLines = sensorControls.get(V4L2_CID_EXPOSURE).get<int32_t>();
 	int32_t gainCode = sensorControls.get(V4L2_CID_ANALOGUE_GAIN).get<int32_t>();
+	int32_t vblank = sensorControls.get(V4L2_CID_VBLANK).get<int32_t>();
 
 	deviceStatus.shutter_speed = helper_->Exposure(exposureLines);
 	deviceStatus.analogue_gain = helper_->Gain(gainCode);
+	deviceStatus.frame_length = mode_.height + vblank;
 
 	LOG(IPARPI, Debug) << "Metadata - " << deviceStatus;