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-rw-r--r--src/ipa/ipu3/algorithms/agc.cpp17
1 files changed, 9 insertions, 8 deletions
diff --git a/src/ipa/ipu3/algorithms/agc.cpp b/src/ipa/ipu3/algorithms/agc.cpp
index 6f5b6a45..e7c59f3d 100644
--- a/src/ipa/ipu3/algorithms/agc.cpp
+++ b/src/ipa/ipu3/algorithms/agc.cpp
@@ -125,7 +125,7 @@ void Agc::filterExposure()
LOG(IPU3Agc, Debug) << "After filtering, total_exposure " << filteredExposure_;
}
-void Agc::lockExposureGain(uint32_t &exposure, double &gain)
+void Agc::lockExposureGain(uint32_t &exposure, double &analogueGain)
{
/* Algorithm initialization should wait for first valid frames */
/* \todo - have a number of frames given by DelayedControls ?
@@ -137,16 +137,17 @@ void Agc::lockExposureGain(uint32_t &exposure, double &gain)
if (std::abs(iqMean_ - kEvGainTarget * knumHistogramBins) <= 1) {
LOG(IPU3Agc, Debug) << "!!! Good exposure with iqMean = " << iqMean_;
} else {
- double newGain = kEvGainTarget * knumHistogramBins / iqMean_;
+ double evGain = kEvGainTarget * knumHistogramBins / iqMean_;
/* extracted from Rpi::Agc::computeTargetExposure */
utils::Duration currentShutter = exposure * lineDuration_;
- currentExposureNoDg_ = currentShutter * gain;
+ currentExposureNoDg_ = currentShutter * analogueGain;
LOG(IPU3Agc, Debug) << "Actual total exposure " << currentExposureNoDg_
<< " Shutter speed " << currentShutter
- << " Gain " << gain;
+ << " Gain " << analogueGain
+ << " Needed ev gain " << evGain;
- currentExposure_ = currentExposureNoDg_ * newGain;
+ currentExposure_ = currentExposureNoDg_ * evGain;
utils::Duration minShutterSpeed = minExposureLines_ * lineDuration_;
utils::Duration maxShutterSpeed = maxExposureLines_ * lineDuration_;
@@ -174,7 +175,7 @@ void Agc::lockExposureGain(uint32_t &exposure, double &gain)
<< stepGain;
exposure = shutterTime / lineDuration_;
- gain = stepGain;
+ analogueGain = stepGain;
}
lastFrame_ = frameCount_;
}
@@ -182,9 +183,9 @@ void Agc::lockExposureGain(uint32_t &exposure, double &gain)
void Agc::process(IPAContext &context, const ipu3_uapi_stats_3a *stats)
{
uint32_t &exposure = context.frameContext.agc.exposure;
- double &gain = context.frameContext.agc.gain;
+ double &analogueGain = context.frameContext.agc.gain;
processBrightness(stats, context.configuration.grid.bdsGrid);
- lockExposureGain(exposure, gain);
+ lockExposureGain(exposure, analogueGain);
frameCount_++;
}