Converting Preview Frame to Bitmap

Converting preview frame to bitmap

as I found out the width and height read from PreviewSize were wrong....
In other words the conversion went wrong because it was based on false values.
After use a new way of setting the preview settings(from example deleivered by google) everything works fine.

EDIT:

Sorry for the quick answer above and long delay.

It was while ago and I can not dig the code now, but i think that I used:

http://developer.android.com/reference/android/hardware/Camera.Parameters.html#getSupportedPreviewSizes()

and took the first element from the list and set the values with

http://developer.android.com/reference/android/hardware/Camera.Parameters.html#setPreviewSize(int, int)

i stored the width and height and used it to transform picture.

It dont know if it was the best solution, but it worked out.

Converting ImageProxy to Bitmap

You will need to check the image.format to see if it is ImageFormat.YUV_420_888. If so , then you can you use this extension to convert image to bitmap:

fun Image.toBitmap(): Bitmap {
    val yBuffer = planes[0].buffer // Y
    val vuBuffer = planes[2].buffer // VU

    val ySize = yBuffer.remaining()
    val vuSize = vuBuffer.remaining()

    val nv21 = ByteArray(ySize + vuSize)

    yBuffer.get(nv21, 0, ySize)
    vuBuffer.get(nv21, ySize, vuSize)

    val yuvImage = YuvImage(nv21, ImageFormat.NV21, this.width, this.height, null)
    val out = ByteArrayOutputStream()
    yuvImage.compressToJpeg(Rect(0, 0, yuvImage.width, yuvImage.height), 50, out)
    val imageBytes = out.toByteArray()
    return BitmapFactory.decodeByteArray(imageBytes, 0, imageBytes.size)
}

This works for a number of camera configurations. However, you might need to use a more advanced method that considers pixel strides.

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