From 30e17d48c71230ca41eeafacbd99df5cd6831b09 Mon Sep 17 00:00:00 2001
From: Vasiliy Doylov <nekocwd@mainlining.org>
Date: Sun, 16 Mar 2025 22:12:10 +0300
Subject: [PATCH] libcamera: software_isp: Add AGC disable control

Signed-off-by: Vasiliy Doylov <nekocwd@mainlining.org>
---
 src/ipa/simple/algorithms/agc.cpp | 11 +++++++++++
 src/ipa/simple/ipa_context.h      |  2 ++
 2 files changed, 13 insertions(+)

diff --git a/src/ipa/simple/algorithms/agc.cpp b/src/ipa/simple/algorithms/agc.cpp
index 249caa264..de20863d8 100644
--- a/src/ipa/simple/algorithms/agc.cpp
+++ b/src/ipa/simple/algorithms/agc.cpp
@@ -44,6 +44,7 @@ Agc::Agc()
 int Agc::init(IPAContext &context,
 	      [[maybe_unused]] const YamlObject &tuningData)
 {
+	context.ctrlMap[&controls::AeEnable] = ControlInfo(false, true, true);
 	context.ctrlMap[&controls::Brightness] = ControlInfo(0.0f, 2.0f, 1.0f);
 	return 0;
 }
@@ -52,6 +53,7 @@ int Agc::configure(IPAContext &context,
 		   [[maybe_unused]] const IPAConfigInfo &configInfo)
 {
 	context.activeState.knobs.brightness = std::optional<double>();
+	context.activeState.knobs.ae_enabled = std::optional<bool>();
 
 	return 0;
 }
@@ -62,10 +64,15 @@ void Agc::queueRequest(typename Module::Context &context,
 		       const ControlList &controls)
 {
 	const auto &brightness = controls.get(controls::Brightness);
+	const auto &ae_enabled = controls.get(controls::AeEnable);
 	if (brightness.has_value()) {
 		context.activeState.knobs.brightness = brightness;
 		LOG(IPASoftExposure, Debug) << "Setting brightness to " << brightness.value();
 	}
+	if (ae_enabled.has_value()) {
+		context.activeState.knobs.ae_enabled = ae_enabled;
+		LOG(IPASoftExposure, Debug) << "Setting ae_enable to " << ae_enabled.value();
+	}
 }
 
 void Agc::updateExposure(IPAContext &context, IPAFrameContext &frameContext, double exposureMSV)
@@ -132,6 +139,10 @@ void Agc::process(IPAContext &context,
 		  const SwIspStats *stats,
 		  ControlList &metadata)
 {
+	const auto ae_enable = context.activeState.knobs.ae_enabled.value_or(true);
+	if (!ae_enable)
+		return;
+
 	utils::Duration exposureTime =
 		context.configuration.agc.lineDuration * frameContext.sensor.exposure;
 	metadata.set(controls::ExposureTime, exposureTime.get<std::micro>());
diff --git a/src/ipa/simple/ipa_context.h b/src/ipa/simple/ipa_context.h
index afc28ba22..8e8add4c3 100644
--- a/src/ipa/simple/ipa_context.h
+++ b/src/ipa/simple/ipa_context.h
@@ -66,6 +66,8 @@ struct IPAActiveState {
 		std::optional<float> saturation;
 		/* 0..2 range, 1.0 = normal */
 		std::optional<double> brightness;
+		/* 0..1 range, 1 = normal */
+		std::optional<bool> ae_enabled;
 	} knobs;
 };