Camera Image Processing ColorFilters does not work on Android

im working on a android camera app using qt qml c++

issue bring up in the forum:

https://forum.qt.io/topic/82585
https://forum.qt.io/topic/75923
 

 
I try to add some feature to Qt 5.9 example, declarative-camera . . .
https://doc.qt.io/qt-5/qtmultimedia-multimedia-declarative-camera-example.html

so i added below code to this file
https://doc.qt.io/qt-5/qtmultimedia-multimedia-declarative-camera-photocapturecontrols-qml.html

//this button works well.
CameraButton {
   text: "Tungsten"
   onClicked:captureControls.camera.imageProcessing.setWhiteBalanceMode(CameraImageProcessing.WhiteBalanceTungsten) }

//this button is not work!
CameraButton {
   text: "Negative"
   onClicked:captureControls.camera.imageProcessing.setColorFilter(CameraImageProcessing.ColorFilterNegative) }

the code tested on:

Android 7.0.0 > LG G5

Android 5.0.2 > Asus Zenpad C7.0

Android 4.3.0 > Emulator

Android 4.2.1 > GLX G5

kit: Android for armeabi-v7a GCC 4.9, Qt 5.7.1 for Android