private static Android.Util.Size ToPixels(Size dpSize)
{
var(width, height) = dpSize;
var widthPx = DimensionUtils.ConvertDpToPixel((float)width);
var heightPx = DimensionUtils.ConvertDpToPixel((float)height);
return(new Android.Util.Size(widthPx, heightPx));
}
public Surface CreateSurface(Size requestSize)
{
var requestPixelSize = ToPixels(requestSize);
var bufferSize = GetBufferSize(requestPixelSize);
Size = DimensionUtils.ToXamarinFormsSize(bufferSize);
var pixelSize = new System.Drawing.Size {
Width = bufferSize.Width, Height = bufferSize.Height
};
PixelSize = pixelSize;
ConfigureTransform(requestPixelSize.Width, requestPixelSize.Height);
_imageReader = ImageReader.NewInstance(bufferSize.Width, bufferSize.Height, ImageFormatType.Yuv420888, 4);
_imageAvailableListener = new ImageAvailableListener();
_imageAvailableListener.ImageAvailable += PreviewImageAvailable;
_imageReader.SetOnImageAvailableListener(_imageAvailableListener, _backgroundHandler);
return(_imageReader.Surface);
}