Android - Background Camera Access to Bitmap Texture

Howdy,I'm using a standard Android implementation of Vuforia (Not unity) and I've been trying to acquire the background video as a texture,I know about using glReadPixels, however this is only good for taking 'screenshots' as it is extremely slow.My intention is to send a constant stream of images over the network.I've looked at the example, but all I see is the pixel being passed into opengl in the background, I don't see any reference of reading the pixels from the video stream.Can someone point me in the right direction?