ipa: libipa: pwl: Drop readYaml() function

All users of the Pwl::readYaml() function have been removed. The
function is not used, and is deprecated in favour of YamlObject::get().
Drop it.

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

src/ipa/libipa/pwl.cpp

@@ -125,44 +125,6 @@ Pwl::Pwl(std::vector<Point> &&points)
 {
 }
 
-/**
- * \brief Populate the piecewise linear function from yaml data
- * \param[in] params Yaml data to populate the piecewise linear function with
- *
- * Any existing points in the piecewise linear function *will* be overwritten.
- *
- * The yaml data is expected to be a list with an even number of numerical
- * elements. These will be parsed in pairs into x and y points in the piecewise
- * linear function, and added in order. x must be monotonically increasing.
- *
- * \return 0 on success, negative error code otherwise
- */
-int Pwl::readYaml(const libcamera::YamlObject &params)
-{
-	if (!params.size() || params.size() % 2)
-		return -EINVAL;
-
-	const auto &list = params.asList();
-
-	points_.clear();
-
-	for (auto it = list.begin(); it != list.end(); it++) {
-		auto x = it->get<double>();
-		if (!x)
-			return -EINVAL;
-		if (it != list.begin() && *x <= points_.back().x())
-			return -EINVAL;
-
-		auto y = (++it)->get<double>();
-		if (!y)
-			return -EINVAL;
-
-		points_.push_back(Point({ *x, *y }));
-	}
-
-	return 0;
-}
-
 /**
  * \brief Append a point to the end of the piecewise linear function
  * \param[in] x x-coordinate of the point to add to the piecewise linear function

src/ipa/libipa/pwl.h

@@ -49,8 +49,6 @@ public:
 	Pwl(const std::vector<Point> &points);
 	Pwl(std::vector<Point> &&points);
 
-	int readYaml(const libcamera::YamlObject &params);
-
 	void append(double x, double y, double eps = 1e-6);
 
 	bool empty() const { return points_.empty(); }