diff options
| author | Paul Elder <paul.elder@ideasonboard.com> | 2024-09-16 01:24:18 +0200 |
|---|---|---|
| committer | Laurent Pinchart <laurent.pinchart@ideasonboard.com> | 2024-09-25 23:53:44 +0300 |
| commit | 9bbccb97fa0debc86d906fdfc1fbedbd50de5d06 (patch) | |
| tree | 5794a9de150d8800bcfc4de2631fe6b06588ac1c /src | |
| parent | 44b49af7a0a870d5fce5c162e3998ef3696912d5 (diff) | |
libcamera: controls: Add enum names and values map to ControlId
Add to ControlId information about the names and values of enum, in the
event that the ControlId is an enum type. This allows applications to
query the ControlId for the names of the enum values, so that they can
be displayed on a UI, for example. Without this, it was necessary to use
macros of NameOfControlNameValueMap, which is difficult to use and is
very inflexible.
There already exists a map from name -> value in generated code. Reuse
this and pass it to the ControlId constructor, which in turn generates
the reverse map. The reverse map is then exposed to applications.
Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Umang Jain <umang.jain@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Diffstat (limited to 'src')
| -rw-r--r-- | src/libcamera/control_ids.cpp.in | 4 | ||||
| -rw-r--r-- | src/libcamera/controls.cpp | 15 |
2 files changed, 18 insertions, 1 deletions
diff --git a/src/libcamera/control_ids.cpp.in b/src/libcamera/control_ids.cpp.in index 05c8fb38..3a204931 100644 --- a/src/libcamera/control_ids.cpp.in +++ b/src/libcamera/control_ids.cpp.in @@ -89,8 +89,10 @@ extern const std::map<std::string, {{ctrl.type}}> {{ctrl.name}}NameValueMap = { { "{{enum.name}}", {{enum.name}} }, {%- endfor %} }; -{% endif -%} +extern const Control<{{ctrl.type}}> {{ctrl.name}}({{ctrl.name|snake_case|upper}}, "{{ctrl.name}}", {{ctrl.name}}NameValueMap); +{% else -%} extern const Control<{{ctrl.type}}> {{ctrl.name}}({{ctrl.name|snake_case|upper}}, "{{ctrl.name}}"); +{% endif -%} {%- endfor %} {% if vendor != 'libcamera' %} diff --git a/src/libcamera/controls.cpp b/src/libcamera/controls.cpp index dba74404..a46c431a 100644 --- a/src/libcamera/controls.cpp +++ b/src/libcamera/controls.cpp @@ -389,7 +389,15 @@ void ControlValue::reserve(ControlType type, bool isArray, std::size_t numElemen * \param[in] id The control numerical ID * \param[in] name The control name * \param[in] type The control data type + * \param[in] enumStrMap The map from enum names to values (optional) */ +ControlId::ControlId(unsigned int id, const std::string &name, ControlType type, + const std::map<std::string, int32_t> &enumStrMap) + : id_(id), name_(name), type_(type), enumStrMap_(enumStrMap) +{ + for (const auto &pair : enumStrMap_) + reverseMap_[pair.second] = pair.first; +} /** * \fn unsigned int ControlId::id() const @@ -410,6 +418,12 @@ void ControlValue::reserve(ControlType type, bool isArray, std::size_t numElemen */ /** + * \fn const std::map<int32_t, std::string> &ControlId::enumerators() const + * \brief Retrieve the map of enum values to enum names + * \return The map of enum values to enum names + */ + +/** * \fn bool operator==(unsigned int lhs, const ControlId &rhs) * \brief Compare a ControlId with a control numerical ID * \param[in] lhs Left-hand side numerical ID @@ -459,6 +473,7 @@ void ControlValue::reserve(ControlType type, bool isArray, std::size_t numElemen * \brief Construct a Control instance * \param[in] id The control numerical ID * \param[in] name The control name + * \param[in] enumStrMap The map from enum names to values (optional) * * The control data type is automatically deduced from the template type T. */ |