--- /dev/null
+/*
+ * Copyright (c) 2018-2019. Developed by Hedgecode.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.hedgecode.chess.qrcode;
+
+import java.awt.image.BufferedImage;
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.URI;
+import java.util.EnumMap;
+import java.util.Map;
+
+import javax.imageio.ImageIO;
+
+import com.google.zxing.BinaryBitmap;
+import com.google.zxing.DecodeHintType;
+import com.google.zxing.ReaderException;
+import com.google.zxing.client.j2se.BufferedImageLuminanceSource;
+import com.google.zxing.common.DecoderResult;
+import com.google.zxing.common.DetectorResult;
+import com.google.zxing.common.HybridBinarizer;
+import com.google.zxing.qrcode.decoder.Decoder;
+import com.google.zxing.qrcode.detector.Detector;
+
+import org.hedgecode.chess.ChessQRCodeConstants;
+
+/**
+ * Chess-specific QR Codes reader (image decoder).
+ *
+ * @author Dmitry Samoshin aka gotty
+ */
+public class ChessQRCodeReader {
+
+ private final Decoder decoder;
+
+ private static ChessQRCodeReader _instance = new ChessQRCodeReader();
+
+ private ChessQRCodeReader() {
+ decoder = new Decoder();
+ }
+
+ public ChessQRResult read(File qrCodeImageFile) throws ChessQRCodeException {
+ BufferedImage qrCodeImage;
+ try {
+ qrCodeImage = ImageIO.read(qrCodeImageFile);
+ } catch (IOException e) {
+ throw new ChessQRCodeException(
+ ChessQRCodeException.Type.READ, "read.input.qrcode.file", qrCodeImageFile.getName()
+ );
+ }
+ return read(qrCodeImage);
+ }
+
+ public ChessQRResult read(InputStream qrCodeInputStream) throws ChessQRCodeException {
+ BufferedImage qrCodeImage;
+ try {
+ qrCodeImage = ImageIO.read(qrCodeInputStream);
+ } catch (IOException e) {
+ throw new ChessQRCodeException(
+ ChessQRCodeException.Type.READ, "read.input.qrcode.stream", e.getMessage()
+ );
+ }
+ return read(qrCodeImage);
+ }
+
+ public ChessQRResult read(URI qrCodeUri) throws ChessQRCodeException {
+ BufferedImage qrCodeImage;
+ try {
+ qrCodeImage = ImageIO.read(qrCodeUri.toURL());
+ } catch (IOException e) {
+ throw new ChessQRCodeException(
+ ChessQRCodeException.Type.READ, "read.input.qrcode.url", qrCodeUri.toASCIIString()
+ );
+ }
+ return read(qrCodeImage);
+ }
+
+ public ChessQRResult read(BufferedImage qrCodeImage) throws ChessQRCodeException {
+ BinaryBitmap bitmap = new BinaryBitmap(
+ new HybridBinarizer(
+ new BufferedImageLuminanceSource(qrCodeImage)
+ )
+ );
+ return decode(bitmap, null);
+ }
+
+ private ChessQRResult decode(BinaryBitmap image, Map<DecodeHintType,?> hints)
+ throws ChessQRCodeException
+ {
+ Map<DecodeHintType,Object> newHints = new EnumMap<>(DecodeHintType.class);
+ if (hints != null) {
+ newHints.putAll(hints);
+ if (!hints.containsKey(DecodeHintType.CHARACTER_SET))
+ newHints.put(DecodeHintType.CHARACTER_SET, ChessQRCodeConstants.CHARSET.name());
+ } else {
+ newHints.put(DecodeHintType.CHARACTER_SET, ChessQRCodeConstants.CHARSET.name());
+ }
+ hints = newHints;
+
+ DecoderResult decoderResult;
+ try {
+ DetectorResult detectorResult = new Detector(
+ image.getBlackMatrix()
+ ).detect(hints);
+
+ decoderResult = decoder.decode(
+ detectorResult.getBits(), hints
+ );
+ } catch (ReaderException e) {
+ throw new ChessQRCodeException(
+ ChessQRCodeException.Type.READ, "read.zxing.qrcode.error", e.getMessage()
+ );
+ }
+
+ ChessQRCodeMode mode = ChessQRCodeMode.byCode(
+ decoderResult.getText().substring(0, ChessQRCodeMode.CODE_LENGTH)
+ );
+
+ if (mode == null) {
+ throw new ChessQRCodeException(
+ ChessQRCodeException.Type.READ, "read.unknown.chess.mode"
+ );
+ }
+
+ return new ChessQRResult(
+ mode,
+ decoderResult.getText().substring(ChessQRCodeMode.CODE_LENGTH)
+ );
+/*
+ ResultPoint[] points = detectorResult.getPoints();
+
+ if (decoderResult.getOther() instanceof QRCodeDecoderMetaData) {
+ ((QRCodeDecoderMetaData) decoderResult.getOther()).applyMirroredCorrection(points);
+ }
+
+ Result result = new Result(
+ decoderResult.getText(),
+ decoderResult.getRawBytes(),
+ points,
+ BarcodeFormat.QR_CODE
+ );
+
+ List<byte[]> byteSegments = decoderResult.getByteSegments();
+ if (byteSegments != null) {
+ result.putMetadata(ResultMetadataType.BYTE_SEGMENTS, byteSegments);
+ }
+ String ecLevel = decoderResult.getECLevel();
+ if (ecLevel != null) {
+ result.putMetadata(ResultMetadataType.ERROR_CORRECTION_LEVEL, ecLevel);
+ }
+ if (decoderResult.hasStructuredAppend()) {
+ result.putMetadata(
+ ResultMetadataType.STRUCTURED_APPEND_SEQUENCE,
+ decoderResult.getStructuredAppendSequenceNumber()
+ );
+ result.putMetadata(
+ ResultMetadataType.STRUCTURED_APPEND_PARITY,
+ decoderResult.getStructuredAppendParity()
+ );
+ }
+ return result;
+*/
+ }
+
+ public static ChessQRCodeReader getInstance() {
+ return _instance;
+ }
+
+
+ public static void main(String[] args) {
+ try {
+ ChessQRResult qrCodeResult = ChessQRCodeReader.getInstance().read(
+ new File("MyQRCode.png")
+ );
+ System.out.println("Decoded format = " + qrCodeResult.getMode());
+ System.out.println("Decoded text = " + qrCodeResult.getContents());
+ } catch (ChessQRCodeException e) {
+ System.out.println("Could not decode QR Code. Exception: " + e.getMessage());
+ }
+ }
+
+}
git.hedgecode.org / chesshog.git / blobdiff