Camera2 AOSP effect filter in run time and panorama addition (sepia, negative etc)

im developing camera application using source from google, there is class called

Code:

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CameraProxy

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that trigger the camera to open preview, but i need to get the Parameters from that camera to set the color effect

the problem is, when i write

Code:

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CameraProxy.getParameters()

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, that return null, if i write

Code:

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CameraProxy.getCamera().open()

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first, i will get the camera and parameter, but the

Code:

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CameraProxy.startPreview

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wont work and the camera wont open

anyone ever develop the camera pure from AOSP that can help me with this additional feature? thanks in advance

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