Add some features to CameraView

[sibelius]

• [x] upgrade gradle to 4.1
• [x] upgrade to android 26
• [x] implement white balance
• [x] implement zoom
• [x] implement focusDepth
• [x] implement record

this is based on @expo work https://github.com/expo/expo/tree/master/android/cameraview

the idea is to consume this package on https://github.com/lwansbrough/react-native-camera (check this https://github.com/lwansbrough/react-native-camera/issues/1031)

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[sibelius]

I've signed the CLA, I don't know why this does not worked

[googlebot]

CLAs look good, thanks!

[sibelius]

@yaraki can you take a look on this any time soon?

[brentvatne]

@sibelius - the code that you used here is BSD licensed: https://github.com/expo/expo/blob/master/LICENSE -- it requires attribution and retaining the copyright notice. I'm not sure how this interacts with Google's CLA here, it might invalidate this PR.

[sibelius]

should a put the expo LICENSE on THIRD-PARTY-LICENSES?

[elementlo]

I want to know now how to get the preview data , I see there is only method recording video but no one callback the preview frame , some one can help me? @sibelius

[aalices]

@elementlo you should use setScanning(true) on you CameraView and then onPreviewFrame should be invoked within a Callback you previously added.

[elementlo]

@aalices OK , I'll have a try first , thank you.

[bipinvaylu]

Hi, When do we have this PR gets merged? I want to do Preview, Recording and Preview frame processing parallel. I hope this PR incorporating those things. For more details, Please find my use case here: https://stackoverflow.com/questions/54091648/camera-2-api-to-preview-record-and-extract-the-preview-frame-to-firebase-face-d

[bipinvaylu]

Hey @sibelius, Closed PR without merge, It would be a great help if you can share latest codebase link here. I can't able to find the entria:G branch here.

[sibelius]

We moved our efforts to react native camera, the code and improvements are there

If you want to contribute ther it would be great

[bipinvaylu]

Okay, Thanks for the response, So now you are developing the camera stuff into React Native, not in Native Android. That's nice. Atm, I am looking for the Previewing, Recording and Frame processing at the same time. As like I mentioned in my SO question.

[sibelius]

You can do that using ML Kit

[bipinvaylu]

Yup, But I am unable to extract the Image/Frame when recording is going on. With Preview only, I am getting Image/Frames. Any help/insight will be appreciated on this question: https://stackoverflow.com/questions/54091648/camera-2-api-to-preview-record-and-extract-the-preview-frame-to-firebase-face-d