move java files

port_src/core/DONE/Reader.java

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+/*
+ * Copyright 2007 ZXing authors
+ *
+ * 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 com.google.zxing;
+
+import java.util.Map;
+
+/**
+ * Implementations of this interface can decode an image of a barcode in some format into
+ * the String it encodes. For example, {@link com.google.zxing.qrcode.QRCodeReader} can
+ * decode a QR code. The decoder may optionally receive hints from the caller which may help
+ * it decode more quickly or accurately.
+ *
+ * See {@link MultiFormatReader}, which attempts to determine what barcode
+ * format is present within the image as well, and then decodes it accordingly.
+ *
+ * @author Sean Owen
+ * @author dswitkin@google.com (Daniel Switkin)
+ */
+public interface Reader {
+
+  /**
+   * Locates and decodes a barcode in some format within an image.
+   *
+   * @param image image of barcode to decode
+   * @return String which the barcode encodes
+   * @throws NotFoundException if no potential barcode is found
+   * @throws ChecksumException if a potential barcode is found but does not pass its checksum
+   * @throws FormatException if a potential barcode is found but format is invalid
+   */
+  Result decode(BinaryBitmap image) throws NotFoundException, ChecksumException, FormatException;
+
+  /**
+   * 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.
+   *
+   * @param image image of barcode to decode
+   * @param hints passed as a {@link Map} from {@link 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.
+   * @return String which the barcode encodes
+   * @throws NotFoundException if no potential barcode is found
+   * @throws ChecksumException if a potential barcode is found but does not pass its checksum
+   * @throws FormatException if a potential barcode is found but format is invalid
+   */
+  Result decode(BinaryBitmap image, Map<DecodeHintType,?> hints)
+      throws NotFoundException, ChecksumException, FormatException;
+
+  /**
+   * Resets any internal state the implementation has after a decode, to prepare it
+   * for reuse.
+   */
+  void reset();
+
+}