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-rw-r--r--src/libcamera/controls.cpp54
1 files changed, 54 insertions, 0 deletions
diff --git a/src/libcamera/controls.cpp b/src/libcamera/controls.cpp
index cd2cf337..42a2f899 100644
--- a/src/libcamera/controls.cpp
+++ b/src/libcamera/controls.cpp
@@ -10,6 +10,8 @@
#include <sstream>
#include <string>
+#include <libcamera/camera.h>
+
#include "log.h"
#include "utils.h"
@@ -388,6 +390,30 @@ ControlList::ControlList(Camera *camera)
*/
/**
+ * \brief Check if the list contains a control with the specified \a id
+ * \param[in] id The control ID
+ *
+ * The behaviour is undefined if the control \a id is not supported by the
+ * camera that the ControlList refers to.
+ *
+ * \return True if the list contains a matching control, false otherwise
+ */
+bool ControlList::contains(ControlId id) const
+{
+ const ControlInfoMap &controls = camera_->controls();
+ const auto iter = controls.find(id);
+ if (iter == controls.end()) {
+ LOG(Controls, Error)
+ << "Camera " << camera_->name()
+ << " does not support control " << id;
+
+ return false;
+ }
+
+ return controls_.find(&iter->second) != controls_.end();
+}
+
+/**
* \brief Check if the list contains a control with the specified \a info
* \param[in] info The control info
* \return True if the list contains a matching control, false otherwise
@@ -415,6 +441,34 @@ bool ControlList::contains(const ControlInfo *info) const
*/
/**
+ * \brief Access or insert the control specified by \a id
+ * \param[in] id The control ID
+ *
+ * This method returns a reference to the control identified by \a id, inserting
+ * it in the list if the ID is not already present.
+ *
+ * The behaviour is undefined if the control \a id is not supported by the
+ * camera that the ControlList refers to.
+ *
+ * \return A reference to the value of the control identified by \a id
+ */
+ControlValue &ControlList::operator[](ControlId id)
+{
+ const ControlInfoMap &controls = camera_->controls();
+ const auto iter = controls.find(id);
+ if (iter == controls.end()) {
+ LOG(Controls, Error)
+ << "Camera " << camera_->name()
+ << " does not support control " << id;
+
+ static ControlValue empty;
+ return empty;
+ }
+
+ return controls_[&iter->second];
+}
+
+/**
* \fn ControlList::operator[](const ControlInfo *info)
* \brief Access or insert the control specified by \a info
* \param[in] info The control info