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authorLaurent Pinchart <laurent.pinchart@ideasonboard.com>2024-06-13 02:52:15 +0300
committerLaurent Pinchart <laurent.pinchart@ideasonboard.com>2024-06-16 03:28:26 +0300
commitd978832d9e987b555be7c0ee8eeda37981924515 (patch)
treecf02d54d01807ac6e5e867f0739d4e201dcece9f /src/ipa/libipa
parent31c9998bf042963f11e0c4f3687ee8ba0b7318cc (diff)
ipa: libipa: pwl: Specialize YamlObject getter
Implement a specialization of the YamlObject::Getter structure to support deserializing ipa::Pwl objects from YAML data. 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>
Diffstat (limited to 'src/ipa/libipa')
-rw-r--r--src/ipa/libipa/pwl.cpp35
1 files changed, 35 insertions, 0 deletions
diff --git a/src/ipa/libipa/pwl.cpp b/src/ipa/libipa/pwl.cpp
index cf864fbb..3c639645 100644
--- a/src/ipa/libipa/pwl.cpp
+++ b/src/ipa/libipa/pwl.cpp
@@ -459,4 +459,39 @@ std::string Pwl::toString() const
} /* namespace ipa */
+#ifndef __DOXYGEN__
+/*
+ * The YAML data shall be a list of numerical values with an even number of
+ * elements. They are parsed in pairs into x and y points in the piecewise
+ * linear function, and added in order. x must be monotonically increasing.
+ */
+template<>
+std::optional<ipa::Pwl>
+YamlObject::Getter<ipa::Pwl>::get(const YamlObject &obj) const
+{
+ if (!obj.size() || obj.size() % 2)
+ return std::nullopt;
+
+ ipa::Pwl pwl;
+
+ const auto &list = obj.asList();
+
+ for (auto it = list.begin(); it != list.end(); it++) {
+ auto x = it->get<double>();
+ if (!x)
+ return std::nullopt;
+ auto y = (++it)->get<double>();
+ if (!y)
+ return std::nullopt;
+
+ pwl.append(*x, *y);
+ }
+
+ if (pwl.size() != obj.size() / 2)
+ return std::nullopt;
+
+ return pwl;
+}
+#endif /* __DOXYGEN__ */
+
} /* namespace libcamera */