// Note that we don't try rotation without the try harder flag, even if rotation was supported.
public virtual Result decode(BinaryBitmap image, System.Collections.Hashtable hints)
{
try
{
return doDecode(image, hints);
}
catch (ReaderException re)
{
bool tryHarder = hints != null && hints.ContainsKey(DecodeHintType.TRY_HARDER);
if (tryHarder && image.RotateSupported)
{
BinaryBitmap rotatedImage = image.rotateCounterClockwise();
Result result = doDecode(rotatedImage, hints);
// Record that we found it rotated 90 degrees CCW / 270 degrees CW
System.Collections.Hashtable metadata = result.ResultMetadata;
int orientation = 270;
if (metadata != null && metadata.ContainsKey(ResultMetadataType.ORIENTATION))
{
// But if we found it reversed in doDecode(), add in that result here:
orientation = (orientation + ((System.Int32) metadata[ResultMetadataType.ORIENTATION])) % 360;
}
result.putMetadata(ResultMetadataType.ORIENTATION, (System.Object) orientation);
// Update result points
ResultPoint[] points = result.ResultPoints;
int height = rotatedImage.Height;
for (int i = 0; i < points.Length; i++)
{
points[i] = new ResultPoint(height - points[i].Y - 1, points[i].X);
}
return result;
}
else
{
throw re;
}
}
}
