Trouble with JPEG Orientation in Camera2 API — Upside Down on Landscape Right

[Manali Patel]

Hi everyone,

I’m working with the Camera2 API to capture still images and handle device rotation properly for JPEG orientation. I’m using an OrientationEventListener to track device rotation (in degrees: 0, 90, 180, 270) and mapping these to Surface.ROTATION_* constants for orientation correction.

My current approach for JPEG orientation is:
val rotationConstant =currentDeviceOrientation
val jpegOrientation = (sensorOrientation + ORIENTATIONS.get(rotationConstant) + 270) % 360
captureBuilder.set(CaptureRequest.JPEG_ORIENTATION, jpegOrientation)

where currentDeviceOrientation is 

orientationEventListener = object : OrientationEventListener(requireContext()) {
    override fun onOrientationChanged(orientation: Int) {
        if (orientation != ORIENTATION_UNKNOWN) {
            currentDeviceOrientation = (orientation + 45) / 90 * 90/*when (orientation) {
                in 45..134 -> 90   // Landscape left
                in 135..224 -> 180  // Upside down
                in 225..314 -> 270   // Landscape right
                else -> 0           // Portrait
            }*/
        }
        Log.e(TAG, "onOrientationChanged:$orientation---- $currentDeviceOrientation")
    }
}
orientationEventListener?.enable()

and my ORIENTATIONS mapping is:

ORIENTATIONS.append(Surface.ROTATION_0, 90)
ORIENTATIONS.append(Surface.ROTATION_90, 0)
ORIENTATIONS.append(Surface.ROTATION_180, 270)
ORIENTATIONS.append(Surface.ROTATION_270, 180)

Problem:

• Works fine in portrait and landscape left.

• When the device is rotated to landscape right (clockwise 90°), the captured image is upside down.

• Tried variants adding/subtracting 90°, 270°, or 360°, but can’t get consistent results across all orientations.

• Sensor orientation is consistently 90°.