Hi all,
I have tried, with the help of a well known member, to get the camera histograms from the DJI SDK.
The documentation is here : https://developer.dji.com/api-refer...ra.html#djicamera_sethistogramcallback_inline
Basically it looks very similar to the GetGimbal method,
the following code is working for the gimbal
So I tried to derive this code for the histogram but got stuck for... hours
Here is my latest attempt which rises an exception : java.lang.ClassNotFoundException: dji$sdk$camera$HistogramCallback
and the failing code :
this code fails on this line : Dim callback As Object = myCam.CreateEventFromUI("dji.sdk.camera.HistogramCallback", "histogram",Null)
so well before the event !
If you have any idea.... thanks in advance
I have tried, with the help of a well known member, to get the camera histograms from the DJI SDK.
The documentation is here : https://developer.dji.com/api-refer...ra.html#djicamera_sethistogramcallback_inline
Basically it looks very similar to the GetGimbal method,
the following code is working for the gimbal
B4X:
Sub setGimbalStateListener
Try
Dim aircraftjo As JavaObject = Main.aircraft
Dim gimbal As JavaObject = aircraftjo.RunMethod("getGimbal", Null)
If gimbal.IsInitialized Then
Dim callback As Object = gimbal.CreateEventFromUI("dji.common.gimbal.GimbalState$Callback", "gimbalState", Null)
gimbal.RunMethod("setStateCallback", Array(callback))
End If
Catch
Log(LastException)
End Try
End Sub
Sub gimbalState_Event (MethodName As String, Args() As Object) As Object
Dim gimbalState As JavaObject = Args(0)
Dim gimbalAttitude As JavaObject
Dim r, y As Float
gimbalAttitude.InitializeNewInstance("dji.common.gimbal.Attitude", Array(myCameraState.gimbalPitch,r,y) )
gimbalAttitude = gimbalState.RunMethod("getAttitudeInDegrees", Null)
myCameraState.gimbalPitch = gimbalAttitude.RunMethod("getPitch",Null)
Return Null
End SubSo I tried to derive this code for the histogram but got stuck for... hours
Here is my latest attempt which rises an exception : java.lang.ClassNotFoundException: dji$sdk$camera$HistogramCallback
and the failing code :
B4X:
Sub getHistogram
Try
Dim aircraftjo As JavaObject = Main.aircraft
Dim myCam As JavaObject = aircraftjo.RunMethod("getCamera",Null)
If myCam.IsInitialized Then
Dim callback As Object = myCam.CreateEventFromUI("dji.sdk.camera.HistogramCallback", "histogram",Null)
myCam.RunMethod("setHistogramCallback", Array(callback))
End If
Catch
Log(LastException)
End Try
End Sub
Sub histogram_Event (MethodName As String, Args() As Object) As Object
Dim histo As JavaObject = Args(0)
' '....
Return Null
End Subthis code fails on this line : Dim callback As Object = myCam.CreateEventFromUI("dji.sdk.camera.HistogramCallback", "histogram",Null)
so well before the event !
If you have any idea.... thanks in advance