ipa: libipa: module: Add support for instantiation from YAML

Add a Module::createAlgorithms() function to instantiate algorithms from
a YamlObject. The instantiated algorithms are stored in a private member
variable list, exposed through the Module::algorithms() function.

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

1 files changed, 32 insertions, 10 deletions

diff --git a/src/ipa/libipa/module.cpp b/src/ipa/libipa/module.cpp
index 451614fd..77352104 100644
--- a/src/ipa/libipa/module.cpp
+++ b/src/ipa/libipa/module.cpp
@@ -14,6 +14,8 @@
 
 namespace libcamera {
 
+LOG_DEFINE_CATEGORY(IPAModuleAlgo)
+
 /**
  * \brief The IPA namespace
  *
@@ -76,18 +78,23 @@ namespace ipa {
  */
 
 /**
- * \fn Module::createAlgorithm()
- * \brief Create an instance of an Algorithm by name
- * \param[in] name The algorithm name
- *
- * This function is the entry point to algorithm instantiation for the IPA
- * module. It creates and returns an instance of an algorithm identified by its
- * \a name. If no such algorithm exists, the function returns nullptr.
+ * \fn Module::algorithms()
+ * \brief Retrieve the list of instantiated algorithms
+ * \return The list of instantiated algorithms
+ */
+
+/**
+ * \fn Module::createAlgorithms()
+ * \brief Create algorithms from YAML configuration data
+ * \param[in] context The IPA context
+ * \param[in] algorithms Algorithms configuration data as a parsed YamlObject
  *
- * To make an algorithm available to the IPA module, it shall be registered with
- * the REGISTER_IPA_ALGORITHM() macro.
+ * This function iterates over the list of \a algorithms parsed from the YAML
+ * configuration file, and instantiates and initializes the corresponding
+ * algorithms. The configuration data is expected to be correct, any error
+ * causes the function to fail and return immediately.
  *
- * \return A new instance of the Algorithm subclass corresponding to the \a name
+ * \return 0 on success, or a negative error code on failure
  */
 
 /**
@@ -99,6 +106,21 @@ namespace ipa {
  * AlgorithmFactory constructor only.
  */
 
+/**
+ * \fn Module::createAlgorithm(const std::string &name)
+ * \brief Create an instance of an Algorithm by name
+ * \param[in] name The algorithm name
+ *
+ * This function is the entry point to algorithm instantiation for the IPA
+ * module. It creates and returns an instance of an algorithm identified by its
+ * \a name. If no such algorithm exists, the function returns nullptr.
+ *
+ * To make an algorithm available to the IPA module, it shall be registered with
+ * the REGISTER_IPA_ALGORITHM() macro.
+ *
+ * \return A new instance of the Algorithm subclass corresponding to the \a name
+ */
+
 } /* namespace ipa */
 
 } /* namespace libcamera */