Fix video stream aspect ratio scaling in multi-window mode on Android N

app/src/main/java/com/limelight/ui/StreamView.java

@@ -0,0 +1,55 @@
+package com.limelight.ui;
+
+import android.annotation.TargetApi;
+import android.content.Context;
+import android.util.AttributeSet;
+import android.view.SurfaceView;
+
+public class StreamView extends SurfaceView {
+    private double desiredAspectRatio;
+
+    public void setDesiredAspectRatio(double aspectRatio) {
+        this.desiredAspectRatio = aspectRatio;
+    }
+
+    public StreamView(Context context) {
+        super(context);
+    }
+
+    public StreamView(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    public StreamView(Context context, AttributeSet attrs, int defStyleAttr) {
+        super(context, attrs, defStyleAttr);
+    }
+
+    @TargetApi(21)
+    public StreamView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
+        super(context, attrs, defStyleAttr, defStyleRes);
+    }
+
+    @Override
+    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
+        // If no fixed aspect ratio has been provided, simply use the default onMeasure() behavior
+        if (desiredAspectRatio == 0) {
+            super.onMeasure(widthMeasureSpec, heightMeasureSpec);
+            return;
+        }
+
+        // Based on code from: https://www.buzzingandroid.com/2012/11/easy-measuring-of-custom-views-with-specific-aspect-ratio/
+        int widthSize = MeasureSpec.getSize(widthMeasureSpec);
+        int heightSize = MeasureSpec.getSize(heightMeasureSpec);
+
+        int measuredHeight, measuredWidth;
+        if (widthSize > heightSize * desiredAspectRatio) {
+            measuredHeight = heightSize;
+            measuredWidth = (int)(measuredHeight * desiredAspectRatio);
+        } else {
+            measuredWidth = widthSize;
+            measuredHeight = (int)(measuredWidth / desiredAspectRatio);
+        }
+
+        setMeasuredDimension(measuredWidth, measuredHeight);
+    }
+}