IssueTracker

When I draw a bitmap from RGB_565 to ARGB_8888, it takes times of ten times compared to Android 7.1.2.
Please look below sample program.

/*****************************************/
Rect dstrect = new Rect(0, 0, 1280, 720);
Bitmap bitmap  = Bitmap.createBitmap(1280, 720, Bitmap.Config.RGB_565);
Bitmap bitmap2 = Bitmap.createBitmap(1920, 1080, Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(bitmap);
StopWatch sw = new StopWatch();
for(int i=0; i<20; i++) {
        canvas.drawBitmap(bitmap2, null, dstrect, paint);
}
Log.d("sample", "time = "+sw.getDiff()+"[ms]");
/*****************************************/

When I run the code on Android 7.1.2(Nexus5X), it was showen "time = 287[ms]".
When I run the code on Android O DP4(Nexus5X), it was showen "time = 2420[ms]".

Why does it takes times of 10 times when I run the code on Android O DP4?

I attached sample code that you can see this problem.
https://drive.google.com/file/d/0B89KBFSMY8wnTHJ0SXVwVzdGMFk/view?usp=drivesdk

And, I attached two screenshots.