private static string DoZoomAndRead(CancellationTokenSource cts, Bitmap capturedImage)
{
if (cts.IsCancellationRequested)
{
return(null);
}
string resultStr = null;
int height = capturedImage.Height;
int width = capturedImage.Width;
for (int i = 0; i < 10; i++)
{
height += (int)Math.Round(height / 100F * 10F);
width += (int)Math.Round(width / 100F * 10F);
capturedImage = ImageUtils.ResizeImage(cts, capturedImage, width, height);
resultStr = ZxingUtils.DecodeInner(cts, capturedImage);
if (!string.IsNullOrEmpty(resultStr))
{
break;
}
}
return(resultStr);
}
private static string Decode(CancellationTokenSource cts, byte[] byteArray)
{
if (byteArray == null)
{
return(null);
}
if (byteArray.Length == 0)
{
return(null);
}
string resultStr;
using (var memoryStream = new MemoryStream(byteArray))
{
using (var image = Image.FromStream(memoryStream))
{
using (var capturedImage = (Bitmap)image.Clone())
{
resultStr = ZxingUtils.DecodeInner(cts, capturedImage);
if (string.IsNullOrEmpty(resultStr))
{
resultStr = DoZoomAndRotateByCommonAngles(cts, capturedImage);
}
}
}
}
return(resultStr);
}
private static string DoZoomAndRotate(CancellationTokenSource cts, ICloneable capturedImage, int z)
{
if (cts.IsCancellationRequested)
{
return(null);
}
string resultStr;
using (var capturedImageTmp = (Bitmap)capturedImage.Clone())
{
using (var capturedImageTmpNew = ImageUtils.RotateImage(capturedImageTmp, z))
{
resultStr = ZxingUtils.DecodeInner(cts, capturedImageTmpNew);
if (!string.IsNullOrEmpty(resultStr))
{
return(resultStr);
}
resultStr = DoZoomAndRead(cts, capturedImageTmpNew);
}
}
return(resultStr);
}
