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-rw-r--r--src/ipa/rkisp1/algorithms/agc.cpp81
-rw-r--r--src/ipa/rkisp1/algorithms/agc.h9
-rw-r--r--src/ipa/rkisp1/ipa_context.h5
-rw-r--r--src/ipa/rkisp1/rkisp1.cpp3
4 files changed, 91 insertions, 7 deletions
diff --git a/src/ipa/rkisp1/algorithms/agc.cpp b/src/ipa/rkisp1/algorithms/agc.cpp
index 47a6f7b2..f8d1b9a3 100644
--- a/src/ipa/rkisp1/algorithms/agc.cpp
+++ b/src/ipa/rkisp1/algorithms/agc.cpp
@@ -65,6 +65,29 @@ Agc::Agc()
}
/**
+ * \brief Initialise the AGC algorithm from tuning files
+ * \param[in] context The shared IPA context
+ * \param[in] tuningData The YamlObject containing Agc tuning data
+ *
+ * This function calls the base class' tuningData parsers to discover which
+ * control values are supported.
+ *
+ * \return 0 on success or errors from the base class
+ */
+int Agc::init(IPAContext &context, const YamlObject &tuningData)
+{
+ int ret;
+
+ ret = parseTuningData(tuningData);
+ if (ret)
+ return ret;
+
+ context.ctrlMap.merge(controls());
+
+ return 0;
+}
+
+/**
* \brief Configure the AGC given a configInfo
* \param[in] context The shared IPA context
* \param[in] configInfo The IPA configuration data
@@ -81,6 +104,9 @@ int Agc::configure(IPAContext &context, const IPACameraSensorInfo &configInfo)
context.activeState.agc.manual.exposure = context.activeState.agc.automatic.exposure;
context.activeState.agc.autoEnabled = !context.configuration.raw;
+ context.activeState.agc.constraintMode = constraintModes().begin()->first;
+ context.activeState.agc.exposureMode = exposureModeHelpers().begin()->first;
+
/*
* Define the measurement window for AGC as a centered rectangle
* covering 3/4 of the image width and height.
@@ -95,6 +121,15 @@ int Agc::configure(IPAContext &context, const IPACameraSensorInfo &configInfo)
* frame index
*/
frameCount_ = 0;
+
+ /* \todo Run this again when FrameDurationLimits is passed in */
+ setLimits(context.configuration.sensor.minShutterSpeed,
+ context.configuration.sensor.maxShutterSpeed,
+ context.configuration.sensor.minAnalogueGain,
+ context.configuration.sensor.maxAnalogueGain);
+
+ resetFrameCount();
+
return 0;
}
@@ -234,7 +269,6 @@ void Agc::computeExposure(IPAContext &context, IPAFrameContext &frameContext,
double yGain, double iqMeanGain)
{
IPASessionConfiguration &configuration = context.configuration;
- IPAActiveState &activeState = context.activeState;
/* Get the effective exposure and gain applied on the sensor. */
uint32_t exposure = frameContext.sensor.exposure;
@@ -300,10 +334,6 @@ void Agc::computeExposure(IPAContext &context, IPAFrameContext &frameContext,
LOG(RkISP1Agc, Debug) << "Divided up shutter and gain are "
<< shutterTime << " and "
<< stepGain;
-
- /* Update the estimated exposure and gain. */
- activeState.agc.automatic.exposure = shutterTime / configuration.sensor.lineDuration;
- activeState.agc.automatic.gain = stepGain;
}
/**
@@ -373,6 +403,19 @@ void Agc::fillMetadata(IPAContext &context, IPAFrameContext &frameContext,
metadata.set(controls::FrameDuration, frameDuration.get<std::micro>());
}
+double Agc::estimateLuminance(double gain) const
+{
+ double ySum = 0.0;
+
+ /* Sum the averages, saturated to 255. */
+ for (uint8_t expMean : expMeans_)
+ ySum += std::min(expMean * gain, 255.0);
+
+ /* \todo Weight with the AWB gains */
+
+ return ySum / expMeans_.size() / 255;
+}
+
/**
* \brief Process RkISP1 statistics, and run AGC operations
* \param[in] context The shared IPA context
@@ -438,7 +481,35 @@ void Agc::process(IPAContext &context, [[maybe_unused]] const uint32_t frame,
computeExposure(context, frameContext, yGain, iqMeanGain);
frameCount_++;
+ expMeans_ = { params->ae.exp_mean, context.hw->numAeCells };
+
+ /*
+ * The Agc algorithm needs to know the effective exposure value that was
+ * applied to the sensor when the statistics were collected.
+ */
+ utils::Duration exposureTime = context.configuration.sensor.lineDuration
+ * frameContext.sensor.exposure;
+ double analogueGain = frameContext.sensor.gain;
+ utils::Duration effectiveExposureValue = exposureTime * analogueGain;
+
+ utils::Duration shutterTime;
+ double aGain, dGain;
+ std::tie(shutterTime, aGain, dGain) =
+ calculateNewEv(context.activeState.agc.constraintMode,
+ context.activeState.agc.exposureMode,
+ Histogram(hist), effectiveExposureValue);
+
+ LOG(RkISP1Agc, Debug)
+ << "Divided up shutter, analogue gain and digital gain are "
+ << shutterTime << ", " << aGain << " and " << dGain;
+
+ IPAActiveState &activeState = context.activeState;
+ /* Update the estimated exposure and gain. */
+ activeState.agc.automatic.exposure = shutterTime / context.configuration.sensor.lineDuration;
+ activeState.agc.automatic.gain = aGain;
+
fillMetadata(context, frameContext, metadata);
+ expMeans_ = {};
}
REGISTER_IPA_ALGORITHM(Agc, "Agc")
diff --git a/src/ipa/rkisp1/algorithms/agc.h b/src/ipa/rkisp1/algorithms/agc.h
index fb82a33f..34504459 100644
--- a/src/ipa/rkisp1/algorithms/agc.h
+++ b/src/ipa/rkisp1/algorithms/agc.h
@@ -14,18 +14,22 @@
#include <libcamera/geometry.h>
+#include "libipa/agc_mean_luminance.h"
+#include "libipa/histogram.h"
+
#include "algorithm.h"
namespace libcamera {
namespace ipa::rkisp1::algorithms {
-class Agc : public Algorithm
+class Agc : public Algorithm, public AgcMeanLuminance
{
public:
Agc();
~Agc() = default;
+ int init(IPAContext &context, const YamlObject &tuningData) override;
int configure(IPAContext &context, const IPACameraSensorInfo &configInfo) override;
void queueRequest(IPAContext &context,
const uint32_t frame,
@@ -47,10 +51,13 @@ private:
double measureBrightness(Span<const uint32_t> hist) const;
void fillMetadata(IPAContext &context, IPAFrameContext &frameContext,
ControlList &metadata);
+ double estimateLuminance(double gain) const override;
uint64_t frameCount_;
utils::Duration filteredExposure_;
+
+ Span<const uint8_t> expMeans_;
};
} /* namespace ipa::rkisp1::algorithms */
diff --git a/src/ipa/rkisp1/ipa_context.h b/src/ipa/rkisp1/ipa_context.h
index 10d8f38c..256b75eb 100644
--- a/src/ipa/rkisp1/ipa_context.h
+++ b/src/ipa/rkisp1/ipa_context.h
@@ -12,6 +12,7 @@
#include <libcamera/base/utils.h>
+#include <libcamera/controls.h>
#include <libcamera/geometry.h>
#include <libipa/fc_queue.h>
@@ -67,6 +68,8 @@ struct IPAActiveState {
} automatic;
bool autoEnabled;
+ uint32_t constraintMode;
+ uint32_t exposureMode;
} agc;
struct {
@@ -151,6 +154,8 @@ struct IPAContext {
IPAActiveState activeState;
FCQueue<IPAFrameContext> frameContexts;
+
+ ControlInfoMap::Map ctrlMap;
};
} /* namespace ipa::rkisp1 */
diff --git a/src/ipa/rkisp1/rkisp1.cpp b/src/ipa/rkisp1/rkisp1.cpp
index 9dc5f53c..d8610095 100644
--- a/src/ipa/rkisp1/rkisp1.cpp
+++ b/src/ipa/rkisp1/rkisp1.cpp
@@ -119,7 +119,7 @@ const ControlInfoMap::Map rkisp1Controls{
} /* namespace */
IPARkISP1::IPARkISP1()
- : context_({ {}, {}, {}, { kMaxFrameContexts } })
+ : context_({ {}, {}, {}, { kMaxFrameContexts }, {} })
{
}
@@ -427,6 +427,7 @@ void IPARkISP1::updateControls(const IPACameraSensorInfo &sensorInfo,
frameDurations[1],
frameDurations[2]);
+ ctrlMap.merge(context_.ctrlMap);
*ipaControls = ControlInfoMap(std::move(ctrlMap), controls::controls);
}
generated by cgit v1.2.1 (git 2.18.0) at 2024-11-05 00:48:31 +0000