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Diffstat (limited to 'libraries/zxing/src/com/google/zxing/multi/ByQuadrantReader.java')
-rw-r--r--libraries/zxing/src/com/google/zxing/multi/ByQuadrantReader.java96
1 files changed, 0 insertions, 96 deletions
diff --git a/libraries/zxing/src/com/google/zxing/multi/ByQuadrantReader.java b/libraries/zxing/src/com/google/zxing/multi/ByQuadrantReader.java
deleted file mode 100644
index 35904d364..000000000
--- a/libraries/zxing/src/com/google/zxing/multi/ByQuadrantReader.java
+++ /dev/null
@@ -1,96 +0,0 @@
-/*
- * Copyright 2009 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.multi;
-
-import com.google.zxing.BinaryBitmap;
-import com.google.zxing.ChecksumException;
-import com.google.zxing.FormatException;
-import com.google.zxing.NotFoundException;
-import com.google.zxing.Reader;
-import com.google.zxing.Result;
-
-import java.util.Hashtable;
-
-/**
- * This class attempts to decode a barcode from an image, not by scanning the whole image,
- * but by scanning subsets of the image. This is important when there may be multiple barcodes in
- * an image, and detecting a barcode may find parts of multiple barcode and fail to decode
- * (e.g. QR Codes). Instead this scans the four quadrants of the image -- and also the center
- * 'quadrant' to cover the case where a barcode is found in the center.
- *
- * @see GenericMultipleBarcodeReader
- */
-public final class ByQuadrantReader implements Reader {
-
- private final Reader delegate;
-
- public ByQuadrantReader(Reader delegate) {
- this.delegate = delegate;
- }
-
- public Result decode(BinaryBitmap image)
- throws NotFoundException, ChecksumException, FormatException {
- return decode(image, null);
- }
-
- public Result decode(BinaryBitmap image, Hashtable hints)
- throws NotFoundException, ChecksumException, FormatException {
-
- int width = image.getWidth();
- int height = image.getHeight();
- int halfWidth = width / 2;
- int halfHeight = height / 2;
-
- BinaryBitmap topLeft = image.crop(0, 0, halfWidth, halfHeight);
- try {
- return delegate.decode(topLeft, hints);
- } catch (NotFoundException re) {
- // continue
- }
-
- BinaryBitmap topRight = image.crop(halfWidth, 0, halfWidth, halfHeight);
- try {
- return delegate.decode(topRight, hints);
- } catch (NotFoundException re) {
- // continue
- }
-
- BinaryBitmap bottomLeft = image.crop(0, halfHeight, halfWidth, halfHeight);
- try {
- return delegate.decode(bottomLeft, hints);
- } catch (NotFoundException re) {
- // continue
- }
-
- BinaryBitmap bottomRight = image.crop(halfWidth, halfHeight, halfWidth, halfHeight);
- try {
- return delegate.decode(bottomRight, hints);
- } catch (NotFoundException re) {
- // continue
- }
-
- int quarterWidth = halfWidth / 2;
- int quarterHeight = halfHeight / 2;
- BinaryBitmap center = image.crop(quarterWidth, quarterHeight, halfWidth, halfHeight);
- return delegate.decode(center, hints);
- }
-
- public void reset() {
- delegate.reset();
- }
-
-}