图像从一个屏幕广播到另一个屏幕

Question

我把屏幕1280х720的图像播放到屏幕1920х720上，但是我不能把它正确地放在新屏幕上。告诉我如何正确放置它。

    private static final int WIDTH = 1920;
    private static final int HEIGHT = 720;
    private int mWidth;
    private int mHeight;
    private Bitmap canvas = Bitmap.createBitmap(WIDTH, HEIGHT, Bitmap.Config.ARGB_8888);

    private void processImage(Image image) {
        Bitmap bitmap = null;
        try {
            Image.Plane[] planes = image.getPlanes();
            ByteBuffer buffer = planes[0].getBuffer();
            int pixelStride = planes[0].getPixelStride();
            int rowStride = planes[0].getRowStride();
            int rowPadding = rowStride - pixelStride * mWidth;

            // create bitmap
            bitmap = Bitmap.createBitmap(mWidth + rowPadding / pixelStride, mHeight, Bitmap.Config.ARGB_8888);
            bitmap.copyPixelsFromBuffer(buffer);

            int newWidth = mWidth * HEIGHT / mHeight;
            Rect src = new Rect(0, 0, mWidth, mHeight);
            Rect dst = new Rect(WIDTH/2-newWidth/2, 0, WIDTH/2+newWidth/2, HEIGHT);
            new Canvas(canvas).drawBitmap(bitmap, src, dst, null);

            // write bitmap
            ByteArrayOutputStream os = new ByteArrayOutputStream();
            canvas.compress(Bitmap.CompressFormat.JPEG, 100, os);
            mProj.setData(os.toByteArray());
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (bitmap != null) {
                bitmap.recycle();
            }
        }
    }