Portrait to landscape

[MCNorthwood]

When I have the preview in portrait view, it's fine, however once it is flipped to landscape it seems to do a 180 flip of the preview while everything else flips just the 90 to the side.

I'm also using a Samsung Galaxy S4, Android 5.0, API 21

[vtserej]

It is strange that works. samsung started implementing camera2 namespace after android 6. Anyways in the project links in the readme you will find the rotation code

[MCNorthwood]

I actually found a way if you want to implement it? I don't have time to unfortunately but using the monodroid sample code I got the Rotation by adding

internal static MainActivity Instance { get; private set; } into MainActivity.cs at the top above OnCreate. and then in the OnCreate

base.OnCreate(savedInstanceState);
Instance = this;

Then in the CameraDroid when you want to get the rotation in the OnSurfaceTextureSizeChanged either in there or a private void you can. var rotation = (int)MainActivity.Instance.WindowManager.DefaultDisplay.Rotation;

and then after that it's pretty much the same from Camera2Basic code, with your implementation.

var matrix = new Matrix();
var viewRect = new RectF(0, 0, width, height);
var bufferRect = new RectF(0, 0, _previewSize.Height, _previewSize.Width);
var centerX = viewRect.CenterX();
var centerY = viewRect.CenterY();

if((int)SurfaceOrientation.Rotation90 == rotation || (int)SurfaceOrientation.Rotation270 == rotation)
{
    bufferRect.Offset(centerX - bufferRect.CenterX(), centerY - bufferRect.CenterY());
    matrix.SetRectToRect(viewRect, bufferRect, Matrix.ScaleToFit.Fill);
    var scale = Math.Max((float)height / _previewSize.Height, (float)width / _previewSize.Width);
    matrix.PostScale(scale, scale, centerX, centerY);
    matrix.PostRotate(90 * (rotation - 2), centerX, centerY);
}
else if((int)SurfaceOrientation.Rotation180 == rotation)
{
    matrix.PostRotate(180, centerX, centerY);
}
_cameraTexture.SetTransform(matrix);