Tesseract-android-tools  1.0
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Rotate.java
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00001 /*
00002  * Copyright (C) 2011 Google Inc.
00003  *
00004  * Licensed under the Apache License, Version 2.0 (the "License"); you may not
00005  * use this file except in compliance with the License. You may obtain a copy of
00006  * the License at
00007  *
00008  * http://www.apache.org/licenses/LICENSE-2.0
00009  *
00010  * Unless required by applicable law or agreed to in writing, software
00011  * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
00012  * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
00013  * License for the specific language governing permissions and limitations under
00014  * the License.
00015  */
00016 
00025 package com.googlecode.leptonica.android;
00026 
00032 public class Rotate {
00033         static {
00034                 System.loadLibrary("lept");
00035         }
00036 
00037         // Rotation default
00038 
00040         public static final boolean ROTATE_QUALITY = true;
00041 
00051         public static Pix rotate(Pix pixs, float degrees) {
00052                 return rotate(pixs, degrees, false);
00053         }
00054 
00066         public static Pix rotate(Pix pixs, float degrees, boolean quality) {
00067                 return rotate(pixs, degrees, quality, true);
00068         }
00069 
00101         public static Pix rotate(Pix pixs, float degrees, boolean quality,
00102                         boolean resize) {
00103                 if (pixs == null)
00104                         throw new IllegalArgumentException("Source pix must be non-null");
00105 
00106                 int nativePix = nativeRotate(pixs.mNativePix, degrees, quality, resize);
00107 
00108                 if (nativePix == 0)
00109                         return null;
00110 
00111                 return new Pix(nativePix);
00112         }
00113 
00114         // ***************
00115         // * NATIVE CODE *
00116         // ***************
00117 
00118         private static native int nativeRotate(int nativePix, float degrees,
00119                         boolean quality, boolean resize);
00120 }
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