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-rw-r--r--src/ipa/raspberrypi/controller/camera_mode.h10
-rw-r--r--src/ipa/raspberrypi/raspberrypi.cpp16
2 files changed, 25 insertions, 1 deletions
diff --git a/src/ipa/raspberrypi/controller/camera_mode.h b/src/ipa/raspberrypi/controller/camera_mode.h
index 94c51ddf..63b11778 100644
--- a/src/ipa/raspberrypi/controller/camera_mode.h
+++ b/src/ipa/raspberrypi/controller/camera_mode.h
@@ -36,9 +36,11 @@ struct CameraMode {
double scaleY;
/* scaling of the noise compared to the native sensor mode */
double noiseFactor;
- /* minimum and maximum line time */
+ /* minimum and maximum line time and frame durations */
libcamera::utils::Duration minLineLength;
libcamera::utils::Duration maxLineLength;
+ libcamera::utils::Duration minFrameDuration;
+ libcamera::utils::Duration maxFrameDuration;
/* any camera transform *not* reflected already in the camera tuning */
libcamera::Transform transform;
/* minimum and maximum frame lengths in units of lines */
@@ -48,4 +50,10 @@ struct CameraMode {
double sensitivity;
/* pixel clock rate */
uint64_t pixelRate;
+ /* Mode specific shutter speed limits */
+ libcamera::utils::Duration minShutter;
+ libcamera::utils::Duration maxShutter;
+ /* Mode specific analogue gain limits */
+ double minAnalogueGain;
+ double maxAnalogueGain;
};
diff --git a/src/ipa/raspberrypi/raspberrypi.cpp b/src/ipa/raspberrypi/raspberrypi.cpp
index 13757955..3f1afb84 100644
--- a/src/ipa/raspberrypi/raspberrypi.cpp
+++ b/src/ipa/raspberrypi/raspberrypi.cpp
@@ -407,11 +407,27 @@ void IPARPi::setMode(const IPACameraSensorInfo &sensorInfo)
mode_.minFrameLength = sensorInfo.minFrameLength;
mode_.maxFrameLength = sensorInfo.maxFrameLength;
+ /* Store these for convenience. */
+ mode_.minFrameDuration = mode_.minFrameLength * mode_.minLineLength;
+ mode_.maxFrameDuration = mode_.maxFrameLength * mode_.maxLineLength;
+
/*
* Some sensors may have different sensitivities in different modes;
* the CamHelper will know the correct value.
*/
mode_.sensitivity = helper_->getModeSensitivity(mode_);
+
+ const ControlInfo &gainCtrl = sensorCtrls_.at(V4L2_CID_ANALOGUE_GAIN);
+ const ControlInfo &shutterCtrl = sensorCtrls_.at(V4L2_CID_EXPOSURE);
+
+ mode_.minAnalogueGain = helper_->gain(gainCtrl.min().get<int32_t>());
+ mode_.maxAnalogueGain = helper_->gain(gainCtrl.max().get<int32_t>());
+
+ /* Shutter speed is calculated based on the limits of the frame durations. */
+ mode_.minShutter = helper_->exposure(shutterCtrl.min().get<int32_t>(), mode_.minLineLength);
+ mode_.maxShutter = Duration::max();
+ helper_->getBlanking(mode_.maxShutter,
+ mode_.minFrameDuration, mode_.maxFrameDuration);
}
int IPARPi::configure(const IPACameraSensorInfo &sensorInfo, const IPAConfig &ipaConfig,