[libcamera-devel] [PATCH 01/12] libcamera: CameraSensor: Mention V4L2 in get/setControls()

Jacopo Mondi jacopo at jmondi.org
Tue Jan 5 20:05:11 CET 2021


The current CameraSensor interface for reading and writing controls
is currently based on V4L2 controls.

Mention that more clearly in the documentation and, while at it, re-sort
the documentation to match the methods declaration order.

Signed-off-by: Jacopo Mondi <jacopo at jmondi.org>
---
 src/libcamera/camera_sensor.cpp | 24 +++++++++++++-----------
 1 file changed, 13 insertions(+), 11 deletions(-)

diff --git a/src/libcamera/camera_sensor.cpp b/src/libcamera/camera_sensor.cpp
index 046474c03f4a..05a1d7c22e97 100644
--- a/src/libcamera/camera_sensor.cpp
+++ b/src/libcamera/camera_sensor.cpp
@@ -593,11 +593,12 @@ const ControlInfoMap &CameraSensor::controls() const
 }
 
 /**
- * \brief Read controls from the sensor
+ * \brief Read V4L2 controls from the sensor
  * \param[in] ids The list of controls to read, specified by their ID
  *
  * This method reads the value of all controls contained in \a ids, and returns
- * their values as a ControlList.
+ * their values as a ControlList. The control identifiers are defined by the
+ * V4L2 specification (V4L2_CID_*).
  *
  * If any control in \a ids is not supported by the device, is disabled (i.e.
  * has the V4L2_CTRL_FLAG_DISABLED flag set), or if any other error occurs
@@ -615,18 +616,13 @@ ControlList CameraSensor::getControls(const std::vector<uint32_t> &ids)
 }
 
 /**
- * \fn CameraSensor::properties()
- * \brief Retrieve the camera sensor properties
- * \return The list of camera sensor properties
- */
-
-/**
- * \brief Write controls to the sensor
+ * \brief Write V4L2 controls to the sensor
  * \param[in] ctrls The list of controls to write
  *
  * This method writes the value of all controls contained in \a ctrls, and
- * stores the values actually applied to the device in the corresponding
- * \a ctrls entry.
+ * stores the values actually applied to the device in the corresponding \a
+ * ctrls entry. The control identifiers are defined by the V4L2 specification
+ * (V4L2_CID_*).
  *
  * If any control in \a ctrls is not supported by the device, is disabled (i.e.
  * has the V4L2_CTRL_FLAG_DISABLED flag set), is read-only, or if any other
@@ -649,6 +645,12 @@ int CameraSensor::setControls(ControlList *ctrls)
 	return subdev_->setControls(ctrls);
 }
 
+/**
+ * \fn CameraSensor::properties()
+ * \brief Retrieve the camera sensor properties
+ * \return The list of camera sensor properties
+ */
+
 /**
  * \brief Assemble and return the camera sensor info
  * \param[out] info The camera sensor info
-- 
2.29.2



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