ipa: rkisp1: agc: Rename maxShutterSpeed to maxFrameDuration

The AGC active state and frame context both contain a variable named
maxShutterSpeed. The variable is used to limit the maximum shutter speed
when computing the exposure time and gains, but stores the maximum frame
duration, not clamped by the sensor's maximum shutter speed. Rename it
to maxFrameDuration.

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

3 files changed, 9 insertions, 9 deletions

diff --git a/src/ipa/rkisp1/algorithms/agc.cpp b/src/ipa/rkisp1/algorithms/agc.cpp
index 6a199b47..5b917557 100644
--- a/src/ipa/rkisp1/algorithms/agc.cpp
+++ b/src/ipa/rkisp1/algorithms/agc.cpp
@@ -182,7 +182,7 @@ int Agc::configure(IPAContext &context, const IPACameraSensorInfo &configInfo)
 	 * except it's computed in the IPA and not here so we'd have to
 	 * recompute it.
 	 */
-	context.activeState.agc.maxShutterSpeed = context.configuration.sensor.maxShutterSpeed;
+	context.activeState.agc.maxFrameDuration = context.configuration.sensor.maxShutterSpeed;
 
 	/*
 	 * Define the measurement window for AGC as a centered rectangle
@@ -269,11 +269,11 @@ void Agc::queueRequest(IPAContext &context,
 
 	const auto &frameDurationLimits = controls.get(controls::FrameDurationLimits);
 	if (frameDurationLimits) {
-		utils::Duration maxShutterSpeed =
+		utils::Duration maxFrameDuration =
 			std::chrono::milliseconds((*frameDurationLimits).back());
-		agc.maxShutterSpeed = maxShutterSpeed;
+		agc.maxFrameDuration = maxFrameDuration;
 	}
-	frameContext.agc.maxShutterSpeed = agc.maxShutterSpeed;
+	frameContext.agc.maxFrameDuration = agc.maxFrameDuration;
 }
 
 /**
@@ -421,7 +421,7 @@ void Agc::process(IPAContext &context, [[maybe_unused]] const uint32_t frame,
 	expMeans_ = { params->ae.exp_mean, context.hw->numAeCells };
 
 	utils::Duration maxShutterSpeed = std::min(context.configuration.sensor.maxShutterSpeed,
-						   frameContext.agc.maxShutterSpeed);
+						   frameContext.agc.maxFrameDuration);
 	setLimits(context.configuration.sensor.minShutterSpeed,
 		  maxShutterSpeed,
 		  context.configuration.sensor.minAnalogueGain,
diff --git a/src/ipa/rkisp1/ipa_context.cpp b/src/ipa/rkisp1/ipa_context.cpp
index 9e445dcc..ab6cfae1 100644
--- a/src/ipa/rkisp1/ipa_context.cpp
+++ b/src/ipa/rkisp1/ipa_context.cpp
@@ -172,7 +172,7 @@ namespace libcamera::ipa::rkisp1 {
  * \var IPAActiveState::agc.meteringMode
  * \brief Metering mode as set by the AeMeteringMode control
  *
- * \var IPAActiveState::agc.maxShutterSpeed
+ * \var IPAActiveState::agc.maxFrameDuration
  * \brief Maximum frame duration as set by the FrameDurationLimits control
  */
 
@@ -314,7 +314,7 @@ namespace libcamera::ipa::rkisp1 {
  * \var IPAFrameContext::agc.meteringMode
  * \brief Metering mode as set by the AeMeteringMode control
  *
- * \var IPAFrameContext::agc.maxShutterSpeed
+ * \var IPAFrameContext::agc.maxFrameDuration
  * \brief Maximum frame duration as set by the FrameDurationLimits control
  *
  * \var IPAFrameContext::agc.update
diff --git a/src/ipa/rkisp1/ipa_context.h b/src/ipa/rkisp1/ipa_context.h
index 4f01a7f8..79775905 100644
--- a/src/ipa/rkisp1/ipa_context.h
+++ b/src/ipa/rkisp1/ipa_context.h
@@ -73,7 +73,7 @@ struct IPAActiveState {
 		controls::AeConstraintModeEnum constraintMode;
 		controls::AeExposureModeEnum exposureMode;
 		controls::AeMeteringModeEnum meteringMode;
-		utils::Duration maxShutterSpeed;
+		utils::Duration maxFrameDuration;
 	} agc;
 
 	struct {
@@ -122,7 +122,7 @@ struct IPAFrameContext : public FrameContext {
 		controls::AeConstraintModeEnum constraintMode;
 		controls::AeExposureModeEnum exposureMode;
 		controls::AeMeteringModeEnum meteringMode;
-		utils::Duration maxShutterSpeed;
+		utils::Duration maxFrameDuration;
 		bool update;
 	} agc;