ipa: ipu3: agc: Remove "using" directive from agc.h header

"using" directives are harmful in headers, as they propagate the
namespace short-circuit to all files that include the header, directly
or indirectly. Drop the directive from agc.h, and use utils::Duration
explicitly. While at it, shorten the namespace qualifier from
libcamera::utils:: to utils:: in agc.cpp for Duration.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>

2 files changed, 9 insertions, 11 deletions

diff --git a/src/ipa/ipu3/algorithms/agc.cpp b/src/ipa/ipu3/algorithms/agc.cpp
index 5eafe82c..970ec424 100644
--- a/src/ipa/ipu3/algorithms/agc.cpp
+++ b/src/ipa/ipu3/algorithms/agc.cpp
@@ -140,20 +140,20 @@ void Agc::lockExposureGain(uint32_t &exposure, double &gain)
 		double newGain = kEvGainTarget * knumHistogramBins / iqMean_;
 
 		/* extracted from Rpi::Agc::computeTargetExposure */
-		libcamera::utils::Duration currentShutter = exposure * lineDuration_;
+		utils::Duration currentShutter = exposure * lineDuration_;
 		currentExposureNoDg_ = currentShutter * gain;
 		LOG(IPU3Agc, Debug) << "Actual total exposure " << currentExposureNoDg_
 				    << " Shutter speed " << currentShutter
 				    << " Gain " << gain;
 		currentExposure_ = currentExposureNoDg_ * newGain;
-		libcamera::utils::Duration maxTotalExposure = maxExposureTime_ * kMaxGain;
+		utils::Duration maxTotalExposure = maxExposureTime_ * kMaxGain;
 		currentExposure_ = std::min(currentExposure_, maxTotalExposure);
 		LOG(IPU3Agc, Debug) << "Target total exposure " << currentExposure_;
 
 		/* \todo: estimate if we need to desaturate */
 		filterExposure();
 
-		libcamera::utils::Duration newExposure = 0.0s;
+		utils::Duration newExposure = 0.0s;
 		if (currentShutter < maxExposureTime_) {
 			exposure = std::clamp(static_cast<uint32_t>(exposure * currentExposure_ / currentExposureNoDg_), kMinExposure, kMaxExposure);
 			newExposure = currentExposure_ / exposure;
diff --git a/src/ipa/ipu3/algorithms/agc.h b/src/ipa/ipu3/algorithms/agc.h
index 64b71c65..e0c315fc 100644
--- a/src/ipa/ipu3/algorithms/agc.h
+++ b/src/ipa/ipu3/algorithms/agc.h
@@ -21,8 +21,6 @@ struct IPACameraSensorInfo;
 
 namespace ipa::ipu3::algorithms {
 
-using utils::Duration;
-
 class Agc : public Algorithm
 {
 public:
@@ -43,13 +41,13 @@ private:
 
 	double iqMean_;
 
-	Duration lineDuration_;
-	Duration maxExposureTime_;
+	utils::Duration lineDuration_;
+	utils::Duration maxExposureTime_;
 
-	Duration prevExposure_;
-	Duration prevExposureNoDg_;
-	Duration currentExposure_;
-	Duration currentExposureNoDg_;
+	utils::Duration prevExposure_;
+	utils::Duration prevExposureNoDg_;
+	utils::Duration currentExposure_;
+	utils::Duration currentExposureNoDg_;
 
 	uint32_t stride_;
 };