Provide access to CameraCharacteristics.SENSOR_ORIENTATION about cameraview-ex HOT 3 CLOSED

@petermolcany I was thinking of replacing the android.media.Image with a custom data class very similar to LegacyImage but for camera2 impl. Can you help me understand your overall use case and how do you currently use the Image output? Would it be more useful to instead have ByteArray output for preview frames with metadata like width, height, and rotation (maybe more)? What are your thoughts?

from cameraview-ex.

@pvasa I am using face recognition (draw overlay on preview) and simultaneous video recording. First, I need to convert preview frame to custom format to perform the detection. Library I am using requires the faces to be upright, sideways faces would not be detected. I need to know the camera sensor orientation to rotate the image and ensure faces are upright. Phone must be therefore held in portrait mode. (If person is lying on side I do not want the image to rotate due to device rotation)

Use case might be similar to one that is demonstrated in the sample. FirebaseVisionImage.fromMediaImage(image, 0).detectBarcodes() has hardcoded value of 0. If detection function was orientation dependent it would require a proper way of passing rotation. Or if preview overlay was required.

I think the cleanest solution might be extension of the API with a getter for cameraSensorOrientation

In cases where detection should be device orientation aware cameraSensorOrientation in combination with OrientationEventListener could be used.

In most cases exposing outputOrientation would be sufficient but for my case where I just need the camera sensor orientation, this is not sufficient.

from cameraview-ex.

Orientation can now be accessed as below from version 3.2.0

// Inside picture taken listener and preview frame listener
outputImage.exifInterface.rotationDegrees // 0, 90, 180, 270

See com.priyankvasa.android.cameraviewex.Image for more information

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