Index: java/org/libjpegturbo/turbojpeg/TJScalingFactor.java |
diff --git a/java/org/libjpegturbo/turbojpeg/TJScalingFactor.java b/java/org/libjpegturbo/turbojpeg/TJScalingFactor.java |
new file mode 100644 |
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+++ b/java/org/libjpegturbo/turbojpeg/TJScalingFactor.java |
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+/* |
+ * Copyright (C)2011 D. R. Commander. All Rights Reserved. |
+ * Copyright (C)2015 Viktor Szathmáry. All Rights Reserved. |
+ * |
+ * Redistribution and use in source and binary forms, with or without |
+ * modification, are permitted provided that the following conditions are met: |
+ * |
+ * - Redistributions of source code must retain the above copyright notice, |
+ * this list of conditions and the following disclaimer. |
+ * - Redistributions in binary form must reproduce the above copyright notice, |
+ * this list of conditions and the following disclaimer in the documentation |
+ * and/or other materials provided with the distribution. |
+ * - Neither the name of the libjpeg-turbo Project nor the names of its |
+ * contributors may be used to endorse or promote products derived from this |
+ * software without specific prior written permission. |
+ * |
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS", |
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE |
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
+ * POSSIBILITY OF SUCH DAMAGE. |
+ */ |
+ |
+package org.libjpegturbo.turbojpeg; |
+ |
+/** |
+ * Fractional scaling factor |
+ */ |
+public class TJScalingFactor { |
+ |
+ public TJScalingFactor(int num, int denom) { |
+ if (num < 1 || denom < 1) |
+ throw new IllegalArgumentException("Numerator and denominator must be >= 1"); |
+ this.num = num; |
+ this.denom = denom; |
+ } |
+ |
+ /** |
+ * Returns numerator |
+ * |
+ * @return numerator |
+ */ |
+ public int getNum() { |
+ return num; |
+ } |
+ |
+ /** |
+ * Returns denominator |
+ * |
+ * @return denominator |
+ */ |
+ public int getDenom() { |
+ return denom; |
+ } |
+ |
+ /** |
+ * Returns the scaled value of <code>dimension</code>. This function |
+ * performs the integer equivalent of |
+ * <code>ceil(dimension * scalingFactor)</code>. |
+ * |
+ * @return the scaled value of <code>dimension</code>. |
+ */ |
+ public int getScaled(int dimension) { |
+ return (dimension * num + denom - 1) / denom; |
+ } |
+ |
+ /** |
+ * Returns true or false, depending on whether this instance and |
+ * <code>other</code> have the same numerator and denominator. |
+ * |
+ * @return true or false, depending on whether this instance and |
+ * <code>other</code> have the same numerator and denominator. |
+ */ |
+ public boolean equals(TJScalingFactor other) { |
+ return this.num == other.num && this.denom == other.denom; |
+ } |
+ |
+ /** |
+ * Returns true or false, depending on whether this instance is equal to |
+ * 1/1. |
+ * |
+ * @return true or false, depending on whether this instance is equal to |
+ * 1/1. |
+ */ |
+ public boolean isOne() { |
+ return num == 1 && denom == 1; |
+ } |
+ |
+ /** |
+ * Numerator |
+ */ |
+ private int num = 1; |
+ |
+ /** |
+ * Denominator |
+ */ |
+ private int denom = 1; |
+} |