async Task <byte[]> GetImageAsByteAsync(bool usePNG, int quality, int desiredWidth, int desiredHeight)
{
PImage image = null;
await ImageService.Instance.Config.MainThreadDispatcher.PostAsync(() =>
{
if (Control != null)
{
image = Control.Image;
}
}).ConfigureAwait(false);
if (image == null)
{
return(null);
}
if (desiredWidth != 0 || desiredHeight != 0)
{
image = image.ResizeUIImage((double)desiredWidth, (double)desiredHeight, InterpolationMode.Default);
}
#if __IOS__
NSData imageData = usePNG ? image.AsPNG() : image.AsJPEG((nfloat)quality / 100f);
if (imageData == null || imageData.Length == 0)
{
return(null);
}
var encoded = imageData.ToArray();
imageData.TryDispose();
return(encoded);
#elif __MACOS__
byte[] encoded;
using (MemoryStream ms = new MemoryStream())
using (var stream = usePNG ? image.AsPngStream() : image.AsJpegStream(quality))
{
stream.CopyTo(ms);
encoded = ms.ToArray();
}
if (desiredWidth != 0 || desiredHeight != 0)
{
image.TryDispose();
}
return(encoded);
#endif
}