[PATCH] pipeline: rkisp1: cproc: Fix default value handling

[Stefan Klug]

Default control values where not applied to activeState. This had no negative
side effects in first place, as the hardware defaults where used. The issue
became visible, when only one of the controls was set at runtime. In that case
the params for the other values where overwritten with 0 (reset value of
activeState) resulting in a black image.

While at it, only add the controls to the controls map if the algorithm is
contained in the tuning file.

Signed-off-by: Stefan Klug <stefan.klug at ideasonboard.com>

---

This patch depends on https://patchwork.libcamera.org/patch/20194/ which needs
to be merged first.


 src/ipa/rkisp1/algorithms/cproc.cpp | 59 +++++++++++++++++++++++++++--
 src/ipa/rkisp1/algorithms/cproc.h   |  3 ++
 src/ipa/rkisp1/rkisp1.cpp           |  3 --
 3 files changed, 59 insertions(+), 6 deletions(-)

diff --git a/src/ipa/rkisp1/algorithms/cproc.cpp b/src/ipa/rkisp1/algorithms/cproc.cpp
index 68bb8180..0f122504 100644
--- a/src/ipa/rkisp1/algorithms/cproc.cpp
+++ b/src/ipa/rkisp1/algorithms/cproc.cpp
@@ -33,6 +33,56 @@ namespace ipa::rkisp1::algorithms {
 
 LOG_DEFINE_CATEGORY(RkISP1CProc)
 
+static int convertBrightness(const float v)
+{
+	return std::clamp<int>(std::lround(v * 128), -128, 127);
+}
+
+static int convertContrast(const float v)
+{
+	return std::clamp<int>(std::lround(v * 128), 0, 255);
+}
+
+static int convertSaturation(const float v)
+{
+	return std::clamp<int>(std::lround(v * 128), 0, 255);
+}
+
+/**
+ * \copydoc libcamera::ipa::Algorithm::init
+ */
+int ColorProcessing::init([[maybe_unused]] IPAContext &context,
+			  [[maybe_unused]] const YamlObject &tuningData)
+{
+	context.ctrlMap[&controls::Brightness] = ControlInfo(-1.0f, 0.993f, 0.0f);
+	context.ctrlMap[&controls::Contrast] = ControlInfo(0.0f, 1.993f, 1.0f);
+	context.ctrlMap[&controls::Saturation] = ControlInfo(0.0f, 1.993f, 1.0f);
+
+	return 0;
+}
+
+/**
+ * \brief Configure the Gamma given a configInfo
+ * \param[in] context The shared IPA context
+ * \param[in] configInfo The IPA configuration data
+ *
+ * \return 0
+ */
+int ColorProcessing::configure([[maybe_unused]] IPAContext &context,
+			       [[maybe_unused]] const IPACameraSensorInfo &configInfo)
+{
+	auto &cproc = context.activeState.cproc;
+
+	cproc.brightness = convertBrightness(
+		context.ctrlMap[&controls::Brightness].def().get<float>());
+	cproc.contrast = convertContrast(
+		context.ctrlMap[&controls::Contrast].def().get<float>());
+	cproc.saturation = convertSaturation(
+		context.ctrlMap[&controls::Saturation].def().get<float>());
+
+	return 0;
+}
+
 /**
  * \copydoc libcamera::ipa::Algorithm::queueRequest
  */
@@ -44,9 +94,12 @@ void ColorProcessing::queueRequest(IPAContext &context,
 	auto &cproc = context.activeState.cproc;
 	bool update = false;
 
+	if (frame == 0)
+		update = true;
+
 	const auto &brightness = controls.get(controls::Brightness);
 	if (brightness) {
-		int value = std::clamp<int>(std::lround(*brightness * 128), -128, 127);
+		int value = convertBrightness(*brightness);
 		if (cproc.brightness != value) {
 			cproc.brightness = value;
 			update = true;
@@ -57,7 +110,7 @@ void ColorProcessing::queueRequest(IPAContext &context,
 
 	const auto &contrast = controls.get(controls::Contrast);
 	if (contrast) {
-		int value = std::clamp<int>(std::lround(*contrast * 128), 0, 255);
+		int value = convertContrast(*contrast);
 		if (cproc.contrast != value) {
 			cproc.contrast = value;
 			update = true;
@@ -68,7 +121,7 @@ void ColorProcessing::queueRequest(IPAContext &context,
 
 	const auto saturation = controls.get(controls::Saturation);
 	if (saturation) {
-		int value = std::clamp<int>(std::lround(*saturation * 128), 0, 255);
+		int value = convertSaturation(*saturation);
 		if (cproc.saturation != value) {
 			cproc.saturation = value;
 			update = true;
diff --git a/src/ipa/rkisp1/algorithms/cproc.h b/src/ipa/rkisp1/algorithms/cproc.h
index bafba5cc..e50e7200 100644
--- a/src/ipa/rkisp1/algorithms/cproc.h
+++ b/src/ipa/rkisp1/algorithms/cproc.h
@@ -21,6 +21,9 @@ public:
 	ColorProcessing() = default;
 	~ColorProcessing() = 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,
 			  IPAFrameContext &frameContext,
 			  const ControlList &controls) override;
diff --git a/src/ipa/rkisp1/rkisp1.cpp b/src/ipa/rkisp1/rkisp1.cpp
index 17474408..62d56a3a 100644
--- a/src/ipa/rkisp1/rkisp1.cpp
+++ b/src/ipa/rkisp1/rkisp1.cpp
@@ -109,9 +109,6 @@ const ControlInfoMap::Map rkisp1Controls{
 	{ &controls::AeEnable, ControlInfo(false, true) },
 	{ &controls::AwbEnable, ControlInfo(false, true) },
 	{ &controls::ColourGains, ControlInfo(0.0f, 3.996f, 1.0f) },
-	{ &controls::Brightness, ControlInfo(-1.0f, 0.993f, 0.0f) },
-	{ &controls::Contrast, ControlInfo(0.0f, 1.993f, 1.0f) },
-	{ &controls::Saturation, ControlInfo(0.0f, 1.993f, 1.0f) },
 	{ &controls::Sharpness, ControlInfo(0.0f, 10.0f, 1.0f) },
 	{ &controls::draft::NoiseReductionMode, ControlInfo(controls::draft::NoiseReductionModeValues) },
 };
-- 
2.43.0