White balance mode#
Camera 1#
Sample code to monitor white balance mode:
/** Reference on MainCamera peripheral. */
private var cameraRef: Ref<MainCamera>?
/** Monitors and prints white balance mode. */
fun monitorWhiteBalanceMode(drone: Drone) {
cameraRef = drone.getPeripheral(MainCamera::class.java) { camera ->
// called on main thread when the camera peripheral changes
camera?.whiteBalance()?.run {
if (supportedModes().isEmpty()) {
// setting value is not relevant if there is no supported value
println("No supported value")
} else {
// get setting value
val mode = mode()
println("Current value: $mode")
// updating flag
println("Updating: $isUpdating")
}
}
}
}
Example of output:
Current value: AUTOMATIC
Updating: false
Sample code to modify white balance mode:
/** Sets white balance mode. */
fun setWhiteBalanceMode(drone: Drone, mode: CameraWhiteBalance.Mode) {
drone.getPeripheral(MainCamera::class.java)?.run {
// set setting value
whiteBalance().setMode(mode)
}
}
Trying to change the setting value to an unsupported value has no effect.
Values supported by the camera are provided by CameraWhiteBalance.Setting.supportedModes()
.
Camera 2#
White balance mode is configured with parameter Camera.Config.WHITE_BALANCE_MODE
.
Sample code to monitor white balance mode:
/** Reference on MainCamera peripheral. */
private var cameraRef: Ref<MainCamera>? = null
/** Monitors and prints white balance mode. */
fun monitorWhiteBalanceMode(drone: Drone) {
cameraRef = drone.getPeripheral(MainCamera::class.java) { camera ->
// called on main thread when the camera peripheral changes
camera?.run {
// get configuration parameter
config[Camera.Config.WHITE_BALANCE_MODE].run {
if (supportedValues(onlyCurrent = true).isEmpty()) {
// parameter value is not relevant
// if there is not supported values in current configuration
println("No supported value in current configuration")
} else {
println("Current value: $value")
}
}
}
}
}
Example of output:
Current value is: AUTOMATIC
Sample code to modify white balance mode:
/** Sets white balance mode. */
fun setWhiteBalanceMode(drone: Drone, mode: Camera.WhiteBalanceMode) {
drone.getPeripheral(MainCamera::class.java)?.run {
// create configuration editor, starting from current configuration
val editor =config.edit(fromScratch = false)
// get configuration parameter
editor[Camera.Config.WHITE_BALANCE_MODE].let { configParam ->
// change parameter value,
// and unset other parameters conflicting with this new value
configParam.value = mode
// complete configuration, by setting missing parameters values
editor.autoComplete()
// send new configuration to drone
editor.commit()
}
}
}
Trying to change the parameter value to an unsupported value has no effect.
Values supported by the camera are retrieved by calling configParam.supportedValues(onlyCurrent = false)
.