move java files

port_src/core/DONE/InvertedLuminanceSource.java

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+/*
+ * Copyright 2013 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;
+
+/**
+ * A wrapper implementation of {@link LuminanceSource} which inverts the luminances it returns -- black becomes
+ * white and vice versa, and each value becomes (255-value).
+ *
+ * @author Sean Owen
+ */
+public final class InvertedLuminanceSource extends LuminanceSource {
+
+  private final LuminanceSource delegate;
+
+  public InvertedLuminanceSource(LuminanceSource delegate) {
+    super(delegate.getWidth(), delegate.getHeight());
+    this.delegate = delegate;
+  }
+
+  @Override
+  public byte[] getRow(int y, byte[] row) {
+    row = delegate.getRow(y, row);
+    int width = getWidth();
+    for (int i = 0; i < width; i++) {
+      row[i] = (byte) (255 - (row[i] & 0xFF));
+    }
+    return row;
+  }
+
+  @Override
+  public byte[] getMatrix() {
+    byte[] matrix = delegate.getMatrix();
+    int length = getWidth() * getHeight();
+    byte[] invertedMatrix = new byte[length];
+    for (int i = 0; i < length; i++) {
+      invertedMatrix[i] = (byte) (255 - (matrix[i] & 0xFF));
+    }
+    return invertedMatrix;
+  }
+
+  @Override
+  public boolean isCropSupported() {
+    return delegate.isCropSupported();
+  }
+
+  @Override
+  public LuminanceSource crop(int left, int top, int width, int height) {
+    return new InvertedLuminanceSource(delegate.crop(left, top, width, height));
+  }
+
+  @Override
+  public boolean isRotateSupported() {
+    return delegate.isRotateSupported();
+  }
+
+  /**
+   * @return original delegate {@link LuminanceSource} since invert undoes itself
+   */
+  @Override
+  public LuminanceSource invert() {
+    return delegate;
+  }
+
+  @Override
+  public LuminanceSource rotateCounterClockwise() {
+    return new InvertedLuminanceSource(delegate.rotateCounterClockwise());
+  }
+
+  @Override
+  public LuminanceSource rotateCounterClockwise45() {
+    return new InvertedLuminanceSource(delegate.rotateCounterClockwise45());
+  }
+
+}