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ipa: raspberrypi: Pass lineLength into the CamHelper API

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Update CamHelper::exposureLines() and CamHelper::exposure() to take a
line length duration parameter for use in the exposure calculations.

For now, only use the minimum line length for all the calculations to
match the existing IPA behavior.

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>
This commit is contained in:
Naushir Patuck 2022-10-06 14:17:37 +01:00 • committed by Laurent Pinchart
parent c513522f3f
commit f9c490ab25
7 changed files with 30 additions and 23 deletions
Download patch file Download diff file Expand all files Collapse all files

12
src/ipa/raspberrypi/cam_helper.cpp
View file

@ -61,16 +61,16 @@ void CamHelper::process([[maybe_unused]] StatisticsPtr &stats,
{
}
uint32_t CamHelper::exposureLines(const Duration exposure) const
uint32_t CamHelper::exposureLines(const Duration exposure, const Duration lineLength) const
{
assert(initialized_);
return exposure / mode_.minLineLength;
return exposure / lineLength;
}
Duration CamHelper::exposure(uint32_t exposureLines) const
Duration CamHelper::exposure(uint32_t exposureLines, const Duration lineLength) const
{
assert(initialized_);
return exposureLines * mode_.minLineLength;
return exposureLines * lineLength;
}
uint32_t CamHelper::getVBlanking(Duration &exposure,
@ -78,7 +78,7 @@ uint32_t CamHelper::getVBlanking(Duration &exposure,
Duration maxFrameDuration) const
{
uint32_t frameLengthMin, frameLengthMax, vblank;
uint32_t exposureLines = CamHelper::exposureLines(exposure);
uint32_t exposureLines = CamHelper::exposureLines(exposure, mode_.minLineLength);
assert(initialized_);
@ -94,7 +94,7 @@ uint32_t CamHelper::getVBlanking(Duration &exposure,
* re-calculate if it has been clipped.
*/
exposureLines = std::min(frameLengthMax - frameIntegrationDiff_, exposureLines);
exposure = CamHelper::exposure(exposureLines);
exposure = CamHelper::exposure(exposureLines, mode_.minLineLength);
/* Limit the vblank to the range allowed by the frame length limits. */
vblank = std::clamp(exposureLines + frameIntegrationDiff_,

6
src/ipa/raspberrypi/cam_helper.h
View file

@ -78,8 +78,10 @@ public:
virtual void prepare(libcamera::Span<const uint8_t> buffer,
Metadata &metadata);
virtual void process(StatisticsPtr &stats, Metadata &metadata);
virtual uint32_t exposureLines(libcamera::utils::Duration exposure) const;
virtual libcamera::utils::Duration exposure(uint32_t exposureLines) const;
virtual uint32_t exposureLines(const libcamera::utils::Duration exposure,
const libcamera::utils::Duration lineLength) const;
virtual libcamera::utils::Duration exposure(uint32_t exposureLines,
const libcamera::utils::Duration lineLength) const;
virtual uint32_t getVBlanking(libcamera::utils::Duration &exposure,
libcamera::utils::Duration minFrameDuration,
libcamera::utils::Duration maxFrameDuration) const;

3
src/ipa/raspberrypi/cam_helper_imx219.cpp
View file

@ -94,7 +94,8 @@ void CamHelperImx219::populateMetadata(const MdParser::RegisterMap &registers,
{
DeviceStatus deviceStatus;
deviceStatus.shutterSpeed = exposure(registers.at(expHiReg) * 256 + registers.at(expLoReg));
deviceStatus.shutterSpeed = exposure(registers.at(expHiReg) * 256 + registers.at(expLoReg),
mode_.minLineLength);
deviceStatus.analogueGain = gain(registers.at(gainReg));
deviceStatus.frameLength = registers.at(frameLengthHiReg) * 256 + registers.at(frameLengthLoReg);

10
src/ipa/raspberrypi/cam_helper_imx296.cpp
View file

@ -21,8 +21,8 @@ public:
CamHelperImx296();
uint32_t gainCode(double gain) const override;
double gain(uint32_t gainCode) const override;
uint32_t exposureLines(Duration exposure) const override;
Duration exposure(uint32_t exposureLines) const override;
uint32_t exposureLines(const Duration exposure, const Duration lineLength) const override;
Duration exposure(uint32_t exposureLines, const Duration lineLength) const override;
void getDelays(int &exposureDelay, int &gainDelay, int &vblankDelay) const override;
private:
@ -53,12 +53,14 @@ double CamHelperImx296::gain(uint32_t gainCode) const
return std::pow(10.0, gainCode / 200.0);
}
uint32_t CamHelperImx296::exposureLines(Duration exposure) const
uint32_t CamHelperImx296::exposureLines(const Duration exposure,
[[maybe_unused]] const Duration lineLength) const
{
return std::max<uint32_t>(minExposureLines, (exposure - 14.26us) / timePerLine);
}
Duration CamHelperImx296::exposure(uint32_t exposureLines) const
Duration CamHelperImx296::exposure(uint32_t exposureLines,
[[maybe_unused]] const Duration lineLength) const
{
return std::max<uint32_t>(minExposureLines, exposureLines) * timePerLine + 14.26us;
}

7
src/ipa/raspberrypi/cam_helper_imx477.cpp
View file

@ -144,9 +144,9 @@ uint32_t CamHelperImx477::getVBlanking(Duration &exposure,
if (shift) {
/* Account for any rounding in the scaled frame length value. */
frameLength <<= shift;
exposureLines = CamHelperImx477::exposureLines(exposure);
exposureLines = CamHelperImx477::exposureLines(exposure, mode_.minLineLength);
exposureLines = std::min(exposureLines, frameLength - frameIntegrationDiff);
exposure = CamHelperImx477::exposure(exposureLines);
exposure = CamHelperImx477::exposure(exposureLines, mode_.minLineLength);
}
return frameLength - mode_.height;
@ -170,7 +170,8 @@ void CamHelperImx477::populateMetadata(const MdParser::RegisterMap &registers,
{
DeviceStatus deviceStatus;
deviceStatus.shutterSpeed = exposure(registers.at(expHiReg) * 256 + registers.at(expLoReg));
deviceStatus.shutterSpeed = exposure(registers.at(expHiReg) * 256 + registers.at(expLoReg),
mode_.minLineLength);
deviceStatus.analogueGain = gain(registers.at(gainHiReg) * 256 + registers.at(gainLoReg));
deviceStatus.frameLength = registers.at(frameLengthHiReg) * 256 + registers.at(frameLengthLoReg);
deviceStatus.sensorTemperature = std::clamp<int8_t>(registers.at(temperatureReg), -20, 80);

7
src/ipa/raspberrypi/cam_helper_imx519.cpp
View file

@ -144,9 +144,9 @@ uint32_t CamHelperImx519::getVBlanking(Duration &exposure,
if (shift) {
/* Account for any rounding in the scaled frame length value. */
frameLength <<= shift;
exposureLines = CamHelperImx519::exposureLines(exposure);
exposureLines = CamHelperImx519::exposureLines(exposure, mode_.minLineLength);
exposureLines = std::min(exposureLines, frameLength - frameIntegrationDiff);
exposure = CamHelperImx519::exposure(exposureLines);
exposure = CamHelperImx519::exposure(exposureLines, mode_.minLineLength);
}
return frameLength - mode_.height;
@ -170,7 +170,8 @@ void CamHelperImx519::populateMetadata(const MdParser::RegisterMap &registers,
{
DeviceStatus deviceStatus;
deviceStatus.shutterSpeed = exposure(registers.at(expHiReg) * 256 + registers.at(expLoReg));
deviceStatus.shutterSpeed = exposure(registers.at(expHiReg) * 256 + registers.at(expLoReg),
mode_.minLineLength);
deviceStatus.analogueGain = gain(registers.at(gainHiReg) * 256 + registers.at(gainLoReg));
deviceStatus.frameLength = registers.at(frameLengthHiReg) * 256 + registers.at(frameLengthLoReg);

8
src/ipa/raspberrypi/raspberrypi.cpp
View file

@ -477,7 +477,7 @@ int IPARPi::configure(const IPACameraSensorInfo &sensorInfo,
const uint32_t exposureMin = sensorCtrls_.at(V4L2_CID_EXPOSURE).min().get<int32_t>();
ctrlMap[&controls::ExposureTime] =
ControlInfo(static_cast<int32_t>(helper_->exposure(exposureMin).get<std::micro>()),
ControlInfo(static_cast<int32_t>(helper_->exposure(exposureMin, mode_.minLineLength).get<std::micro>()),
static_cast<int32_t>(maxShutter.get<std::micro>()));
result->controlInfo = ControlInfoMap(std::move(ctrlMap), controls::controls);
@ -550,7 +550,7 @@ void IPARPi::reportMetadata()
deviceStatus->shutterSpeed.get<std::micro>());
libcameraMetadata_.set(controls::AnalogueGain, deviceStatus->analogueGain);
libcameraMetadata_.set(controls::FrameDuration,
helper_->exposure(deviceStatus->frameLength).get<std::micro>());
helper_->exposure(deviceStatus->frameLength, mode_.minLineLength).get<std::micro>());
if (deviceStatus->sensorTemperature)
libcameraMetadata_.set(controls::SensorTemperature, *deviceStatus->sensorTemperature);
}
@ -1105,7 +1105,7 @@ void IPARPi::fillDeviceStatus(const ControlList &sensorControls)
int32_t gainCode = sensorControls.get(V4L2_CID_ANALOGUE_GAIN).get<int32_t>();
int32_t vblank = sensorControls.get(V4L2_CID_VBLANK).get<int32_t>();
deviceStatus.shutterSpeed = helper_->exposure(exposureLines);
deviceStatus.shutterSpeed = helper_->exposure(exposureLines, mode_.minLineLength);
deviceStatus.analogueGain = helper_->gain(gainCode);
deviceStatus.frameLength = mode_.height + vblank;
@ -1197,7 +1197,7 @@ void IPARPi::applyAGC(const struct AgcStatus *agcStatus, ControlList &ctrls)
/* getVBlanking might clip exposure time to the fps limits. */
Duration exposure = agcStatus->shutterTime;
int32_t vblanking = helper_->getVBlanking(exposure, minFrameDuration_, maxFrameDuration_);
int32_t exposureLines = helper_->exposureLines(exposure);
int32_t exposureLines = helper_->exposureLines(exposure, mode_.minLineLength);
LOG(IPARPI, Debug) << "Applying AGC Exposure: " << exposure
<< " (Shutter lines: " << exposureLines << ", AGC requested "