1 /*
   2  * Copyright (c) 2009, 2013, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 /*
  27  * This file was originally generated by JSLC
  28  * and then hand edited for performance.
  29  */
  30 
  31 package com.sun.scenario.effect.impl.sw.sse;
  32 
  33 import com.sun.scenario.effect.Effect;
  34 import com.sun.scenario.effect.FilterContext;
  35 import com.sun.scenario.effect.ImageData;
  36 import com.sun.scenario.effect.impl.HeapImage;
  37 import com.sun.scenario.effect.impl.Renderer;
  38 import com.sun.javafx.geom.Rectangle;
  39 import com.sun.javafx.geom.transform.BaseTransform;
  40 import com.sun.scenario.effect.impl.state.BoxRenderState;
  41 
  42 public class SSEBoxBlurPeer extends SSEEffectPeer<BoxRenderState> {
  43 
  44     public SSEBoxBlurPeer(FilterContext fctx, Renderer r, String uniqueName) {
  45         super(fctx, r, uniqueName);
  46     }
  47 
  48     @Override
  49     public ImageData filter(Effect effect,
  50                             BoxRenderState brstate,
  51                             BaseTransform transform,
  52                             Rectangle outputClip,
  53                             ImageData... inputs)
  54     {
  55         setRenderState(brstate);
  56         // NOTE: for now, all input images must be TYPE_INT_ARGB_PRE
  57 
  58         boolean horizontal = (getPass() == 0);
  59 
  60         // Calculate the amount the image grows on each iteration (size-1)
  61         int hinc = horizontal ? brstate.getBoxPixelSize(0) - 1 : 0;
  62         int vinc = horizontal ? 0 : brstate.getBoxPixelSize(1) - 1;
  63         int iterations = brstate.getBlurPasses();
  64         if (iterations < 1 || (hinc < 1 && vinc < 1)) {
  65             inputs[0].addref();
  66             return inputs[0];
  67         }
  68         // Calculate the amount the image will grow through the full operation
  69         // Always upgrade to the next even amount of growth
  70         int growx = (hinc * iterations + 1) & (~0x1);
  71         int growy = (vinc * iterations + 1) & (~0x1);
  72 
  73         // Assert: rstate.getEffectTransformSpace() == UserSpace
  74         // NOTE: We could still have a transformed ImageData for other reasons...
  75         HeapImage src = (HeapImage)inputs[0].getUntransformedImage();
  76         Rectangle srcr = inputs[0].getUntransformedBounds();
  77 
  78         HeapImage cur = src;
  79         int curw = srcr.width;
  80         int curh = srcr.height;
  81         int curscan = cur.getScanlineStride();
  82         int[] curPixels = cur.getPixelArray();
  83 
  84         int finalw = curw + growx;
  85         int finalh = curh + growy;
  86         while (curw < finalw || curh < finalh) {
  87             int neww = curw + hinc;
  88             int newh = curh + vinc;
  89             if (neww > finalw) neww = finalw;
  90             if (newh > finalh) newh = finalh;
  91             HeapImage dst = (HeapImage)getRenderer().getCompatibleImage(neww, newh);
  92             int newscan = dst.getScanlineStride();
  93             int[] newPixels = dst.getPixelArray();
  94             if (horizontal) {
  95                 filterHorizontal(newPixels, neww, newh, newscan,
  96                                  curPixels, curw, curh, curscan);
  97             } else {
  98                 filterVertical(newPixels, neww, newh, newscan,
  99                                curPixels, curw, curh, curscan);
 100             }
 101             if (cur != src) {
 102                 getRenderer().releaseCompatibleImage(cur);
 103             }
 104             cur = dst;
 105             curw = neww;
 106             curh = newh;
 107             curPixels = newPixels;
 108             curscan = newscan;
 109         }
 110 
 111         Rectangle dstBounds =
 112             new Rectangle(srcr.x - growx/2, srcr.y - growy/2, curw, curh);
 113         return new ImageData(getFilterContext(), cur, dstBounds);
 114     }
 115 
 116     private static native void
 117         filterHorizontal(int dstPixels[], int dstw, int dsth, int dstscan,
 118                          int srcPixels[], int srcw, int srch, int srcscan);
 119 
 120     private static native void
 121         filterVertical(int dstPixels[], int dstw, int dsth, int dstscan,
 122                        int srcPixels[], int srcw, int srch, int srcscan);
 123 }