I noticed that there is android.media.effect for developer to use in api level 17. There is also a sample 'Helloeffect' for developer to render. However, the sample is focus on a picture. I read the file of effect class and found it must apply an effect to GL textures. I'm new on opengl and I want to apply an effect to the video frame captured by the camera.
Can anyone give me some hints? Thanks!

android android-camera android-4.2-jelly-bean
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