/// <summary>
/// Locates and decodes a barcode in some format within an image. This method also accepts
/// hints, each possibly associated to some data, which may help the implementation decode.
/// </summary>
/// <param name="image">image of barcode to decode</param>
/// <param name="hints">passed as a <see cref="IDictionary{TKey, TValue}"/> from <see cref="DecodeHintType"/>
/// to arbitrary data. The
/// meaning of the data depends upon the hint type. The implementation may or may not do
/// anything with these hints.</param>
/// <returns>
/// String which the barcode encodes
/// </returns>
public Result decode(BinaryBitmap image, IDictionary<DecodeHintType, object> hints)
{
DecoderResult decoderResult;
ResultPoint[] points;
if (image == null || image.BlackMatrix == null)
{
// something is wrong with the image
return null;
}
if (hints != null && hints.ContainsKey(DecodeHintType.PURE_BARCODE))
{
var bits = extractPureBits(image.BlackMatrix);
if (bits == null)
return null;
decoderResult = decoder.decode(bits, hints);
points = NO_POINTS;
}
else
{
var detectorResult = new Detector(image.BlackMatrix).detect(hints);
if (detectorResult == null)
return null;
decoderResult = decoder.decode(detectorResult.Bits, hints);
points = detectorResult.Points;
}
if (decoderResult == null)
return null;
// If the code was mirrored: swap the bottom-left and the top-right points.
var data = decoderResult.Other as QRCodeDecoderMetaData;
if (data != null)
{
data.applyMirroredCorrection(points);
}
var result = new Result(decoderResult.Text, decoderResult.RawBytes, points, BarcodeFormat.QR_CODE);
var byteSegments = decoderResult.ByteSegments;
if (byteSegments != null)
{
result.putMetadata(ResultMetadataType.BYTE_SEGMENTS, byteSegments);
}
var ecLevel = decoderResult.ECLevel;
if (ecLevel != null)
{
result.putMetadata(ResultMetadataType.ERROR_CORRECTION_LEVEL, ecLevel);
}
if (decoderResult.StructuredAppend)
{
result.putMetadata(ResultMetadataType.STRUCTURED_APPEND_SEQUENCE, decoderResult.StructuredAppendSequenceNumber);
result.putMetadata(ResultMetadataType.STRUCTURED_APPEND_PARITY, decoderResult.StructuredAppendParity);
}
return result;
}
/// <summary>
/// Locates and decodes a barcode in some format within an image. This method also accepts
/// hints, each possibly associated to some data, which may help the implementation decode.
/// </summary>
/// <param name="image">image of barcode to decode</param>
/// <param name="hints">passed as a <see cref="IDictionary{TKey, TValue}"/> from <see cref="DecodeHintType"/>
/// to arbitrary data. The
/// meaning of the data depends upon the hint type. The implementation may or may not do
/// anything with these hints.</param>
/// <returns>
/// String which the barcode encodes
/// </returns>
public Result decode(BinaryBitmap image, IDictionary<DecodeHintType, object> hints)
{
DecoderResult decoderResult;
ResultPoint[] points;
if (image == null || image.BlackMatrix == null)
{
// something is wrong with the image
return null;
}
if (hints != null && hints.ContainsKey(DecodeHintType.PURE_BARCODE))
{
BitMatrix bits = extractPureBits(image.BlackMatrix);
if (bits == null)
return null;
decoderResult = decoder.decode(bits, hints);
points = NO_POINTS;
}
else
{
DetectorResult detectorResult = new Detector(image.BlackMatrix).detect(hints);
if (detectorResult == null)
return null;
decoderResult = decoder.decode(detectorResult.Bits, hints);
points = detectorResult.Points;
}
if (decoderResult == null)
return null;
Result result = new Result(decoderResult.Text, decoderResult.RawBytes, points, BarcodeFormat.QR_CODE);
IList<byte[]> byteSegments = decoderResult.ByteSegments;
if (byteSegments != null)
{
result.putMetadata(ResultMetadataType.BYTE_SEGMENTS, byteSegments);
}
var ecLevel = decoderResult.ECLevel;
if (ecLevel != null)
{
result.putMetadata(ResultMetadataType.ERROR_CORRECTION_LEVEL, ecLevel);
}
if (decoderResult.StructuredAppend)
{
result.putMetadata(ResultMetadataType.STRUCTURED_APPEND_SEQUENCE, decoderResult.StructuredAppendSequenceNumber);
result.putMetadata(ResultMetadataType.STRUCTURED_APPEND_PARITY, decoderResult.StructuredAppendParity);
}
return result;
}
/// <summary>
/// Locates and decodes a barcode in some format within an image. This method also accepts
/// hints, each possibly associated to some data, which may help the implementation decode.
/// </summary>
/// <param name="image">image of barcode to decode</param>
/// <param name="hints">passed as a <see cref="IDictionary{TKey, TValue}"/> from <see cref="DecodeHintType"/>
/// to arbitrary data. The
/// meaning of the data depends upon the hint type. The implementation may or may not do
/// anything with these hints.</param>
/// <returns>
/// String which the barcode encodes
/// </returns>
public Result decode(BinaryBitmap image, IDictionary<DecodeHintType, object> hints)
{
DecoderResult decoderResult;
ResultPoint[] points;
if (hints != null && hints.ContainsKey(DecodeHintType.PURE_BARCODE))
{
BitMatrix bits = extractPureBits(image.BlackMatrix);
if (bits == null)
return null;
decoderResult = decoder.decode(bits, hints);
points = NO_POINTS;
}
else
{
DetectorResult detectorResult = new Detector(image.BlackMatrix).detect(hints);
if (detectorResult == null)
return null;
decoderResult = decoder.decode(detectorResult.Bits, hints);
points = detectorResult.Points;
}
if (decoderResult == null)
return null;
Result result = new Result(decoderResult.Text, decoderResult.RawBytes, points, BarcodeFormat.QR_CODE);
IList<byte[]> byteSegments = decoderResult.ByteSegments;
if (byteSegments != null)
{
result.putMetadata(ResultMetadataType.BYTE_SEGMENTS, byteSegments);
}
var ecLevel = decoderResult.ECLevel;
if (ecLevel != null)
{
result.putMetadata(ResultMetadataType.ERROR_CORRECTION_LEVEL, ecLevel);
}
return result;
}
/// <summary>
/// Function for just fetching the QR-Codes in the WebCamTexture-Image.
/// It stores the Data in a QrCodeData-Object.
/// It uses the "pixels" field as the image-source, since we can not
/// access the Unity-API from another thread than the main-thread.
/// </summary>
private void DecodeQr()
{
while (_runThread)
{
// waiting.
if (_pixels != null)
{
// Create a BitMatrix from the Color32[] of the camear image, so that XZing can detect QR-codes.
LuminanceSource lum = new Color32LuminanceSource(_pixels, GlobalState.Instance.CamWidth, GlobalState.Instance.CamHeight);
HybridBinarizer bin = new HybridBinarizer(lum);
BinaryBitmap binBip = new BinaryBitmap(bin);
BitMatrix matrix = binBip.BlackMatrix;
Detector detector = new Detector(matrix);
DetectorResult result = detector.detect();
_qrCodeCollection.UpdateData(result);
}
}
}
