ojluni/src/main/java/sun/java2d/loops/Blit.java - platform/libcore - Git at Google

 /*
  * Copyright (c) 1999, 2004, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.  Oracle designates this
  * particular file as subject to the "Classpath" exception as provided
  * by Oracle in the LICENSE file that accompanied this code.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  */

 package sun.java2d.loops;

 import java.awt.Composite;
 import java.awt.CompositeContext;
 import java.awt.RenderingHints;
 import java.awt.image.ColorModel;
 import java.awt.image.Raster;
 import java.awt.image.WritableRaster;
 import java.lang.ref.WeakReference;
 import sun.java2d.loops.GraphicsPrimitive;
 import sun.java2d.SurfaceData;
 import sun.java2d.pipe.Region;
 import sun.java2d.pipe.SpanIterator;

 /**
  * Blit
  * 1) copies rectangle of pixels from one surface to another
  * 2) performs compositing of colors based upon a Composite
  *    parameter
  *
  * precise behavior is undefined if the source surface
  * and the destination surface are the same surface
  * with overlapping regions of pixels
  */

 public class Blit extends GraphicsPrimitive
 {
     public static final String methodSignature = "Blit(...)".toString();

     public static final int primTypeID = makePrimTypeID();

     private static RenderCache blitcache = new RenderCache(20);

     public static Blit locate(SurfaceType srctype,
                               CompositeType comptype,
                               SurfaceType dsttype)
     {
         return (Blit)
             GraphicsPrimitiveMgr.locate(primTypeID,
                                         srctype, comptype, dsttype);
     }

     public static Blit getFromCache(SurfaceType src,
                                     CompositeType comp,
                                     SurfaceType dst)
     {
         Object o = blitcache.get(src, comp, dst);
         if (o != null) {
             return (Blit) o;
         }

         Blit blit = locate(src, comp, dst);
         if (blit == null) {
             System.out.println("blit loop not found for:");
             System.out.println("src:  "+src);
             System.out.println("comp: "+comp);
             System.out.println("dst:  "+dst);
         } else {
             blitcache.put(src, comp, dst, blit);
         }
         return blit;
     }

     protected Blit(SurfaceType srctype,
                    CompositeType comptype,
                    SurfaceType dsttype)
     {
         super(methodSignature, primTypeID, srctype, comptype, dsttype);
     }

     public Blit(long pNativePrim,
                 SurfaceType srctype,
                 CompositeType comptype,
                 SurfaceType dsttype)
     {
         super(pNativePrim, methodSignature, primTypeID, srctype, comptype, dsttype);
     }

     /**
      * All Blit implementors must have this invoker method
      */
     public native void Blit(SurfaceData src, SurfaceData dst,
                             Composite comp, Region clip,
                             int srcx, int srcy,
                             int dstx, int dsty,
                             int width, int height);

     static {
         GraphicsPrimitiveMgr.registerGeneral(new Blit(null, null, null));
     }

     public GraphicsPrimitive makePrimitive(SurfaceType srctype,
                                            CompositeType comptype,
                                            SurfaceType dsttype)
     {
         /*
         System.out.println("Constructing general blit for:");
         System.out.println("src:  "+srctype);
         System.out.println("comp: "+comptype);
         System.out.println("dst:  "+dsttype);
         */

         if (comptype.isDerivedFrom(CompositeType.Xor)) {
             GeneralXorBlit gxb = new GeneralXorBlit(srctype,
                                                     comptype,
                                                     dsttype);
             setupGeneralBinaryOp(gxb);
             return gxb;
         } else if (comptype.isDerivedFrom(CompositeType.AnyAlpha)) {
             return new GeneralMaskBlit(srctype, comptype, dsttype);
         } else {
             return AnyBlit.instance;
         }
     }

     private static class AnyBlit extends Blit {
         public static AnyBlit instance = new AnyBlit();

         public AnyBlit() {
             super(SurfaceType.Any, CompositeType.Any, SurfaceType.Any);
         }

         public void Blit(SurfaceData srcData,
                          SurfaceData dstData,
                          Composite comp,
                          Region clip,
                          int srcx, int srcy,
                          int dstx, int dsty,
                          int width, int height)
         {
             ColorModel srcCM = srcData.getColorModel();
             ColorModel dstCM = dstData.getColorModel();
             // REMIND: Should get RenderingHints from sg2d
             CompositeContext ctx = comp.createContext(srcCM, dstCM,
                                                       new RenderingHints(null));
             Raster srcRas = srcData.getRaster(srcx, srcy, width, height);
             WritableRaster dstRas =
                 (WritableRaster) dstData.getRaster(dstx, dsty, width, height);

             if (clip == null) {
                 clip = Region.getInstanceXYWH(dstx, dsty, width, height);
             }
             int span[] = {dstx, dsty, dstx+width, dsty+height};
             SpanIterator si = clip.getSpanIterator(span);
             srcx -= dstx;
             srcy -= dsty;
             while (si.nextSpan(span)) {
                 int w = span[2] - span[0];
                 int h = span[3] - span[1];
                 Raster tmpSrcRas = srcRas.createChild(srcx + span[0], srcy + span[1],
                                                       w, h, 0, 0, null);
                 WritableRaster tmpDstRas = dstRas.createWritableChild(span[0], span[1],
                                                                       w, h, 0, 0, null);
                 ctx.compose(tmpSrcRas, tmpDstRas, tmpDstRas);
             }
             ctx.dispose();
         }
     }

     private static class GeneralMaskBlit extends Blit {
         MaskBlit performop;

         public GeneralMaskBlit(SurfaceType srctype,
                                CompositeType comptype,
                                SurfaceType dsttype)
         {
             super(srctype, comptype, dsttype);
             performop = MaskBlit.locate(srctype, comptype, dsttype);
         }

         public void Blit(SurfaceData srcData,
                          SurfaceData dstData,
                          Composite comp,
                          Region clip,
                          int srcx, int srcy,
                          int dstx, int dsty,
                          int width, int height)
         {
             performop.MaskBlit(srcData, dstData, comp, clip,
                                srcx, srcy, dstx, dsty,
                                width, height,
                                null, 0, 0);
         }
     }

     private static class GeneralXorBlit
         extends Blit
         implements GeneralBinaryOp
     {
         Blit convertsrc;
         Blit convertdst;
         Blit performop;
         Blit convertresult;

         WeakReference srcTmp;
         WeakReference dstTmp;

         public GeneralXorBlit(SurfaceType srctype,
                               CompositeType comptype,
                               SurfaceType dsttype)
         {
             super(srctype, comptype, dsttype);
         }

         public void setPrimitives(Blit srcconverter,
                                   Blit dstconverter,
                                   GraphicsPrimitive genericop,
                                   Blit resconverter)
         {
             this.convertsrc = srcconverter;
             this.convertdst = dstconverter;
             this.performop = (Blit) genericop;
             this.convertresult = resconverter;
         }

         public synchronized void Blit(SurfaceData srcData,
                                       SurfaceData dstData,
                                       Composite comp,
                                       Region clip,
                                       int srcx, int srcy,
                                       int dstx, int dsty,
                                       int width, int height)
         {
             SurfaceData src, dst;
             Region opclip;
             int sx, sy, dx, dy;

             if (convertsrc == null) {
                 src = srcData;
                 sx = srcx;
                 sy = srcy;
             } else {
                 SurfaceData cachedSrc = null;
                 if (srcTmp != null) {
                     cachedSrc = (SurfaceData) srcTmp.get();
                 }
                 src = convertFrom(convertsrc, srcData, srcx, srcy,
                                   width, height, cachedSrc);
                 sx = 0;
                 sy = 0;
                 if (src != cachedSrc) {
                     srcTmp = new WeakReference(src);
                 }
             }

             if (convertdst == null) {
                 dst = dstData;
                 dx = dstx;
                 dy = dsty;
                 opclip = clip;
             } else {
                 // assert: convertresult != null
                 SurfaceData cachedDst = null;
                 if (dstTmp != null) {
                     cachedDst = (SurfaceData) dstTmp.get();
                 }
                 dst = convertFrom(convertdst, dstData, dstx, dsty,
                                   width, height, cachedDst);
                 dx = 0;
                 dy = 0;
                 opclip = null;
                 if (dst != cachedDst) {
                     dstTmp = new WeakReference(dst);
                 }
             }

             performop.Blit(src, dst, comp, opclip,
                            sx, sy, dx, dy,
                            width, height);

             if (convertresult != null) {
                 // assert: convertdst != null
                 convertTo(convertresult, dst, dstData, clip,
                           dstx, dsty, width, height);
             }
         }
     }

     public GraphicsPrimitive traceWrap() {
         return new TraceBlit(this);
     }

     private static class TraceBlit extends Blit {
         Blit target;

         public TraceBlit(Blit target) {
             super(target.getSourceType(),
                   target.getCompositeType(),
                   target.getDestType());
             this.target = target;
         }

         public GraphicsPrimitive traceWrap() {
             return this;
         }

         public void Blit(SurfaceData src, SurfaceData dst,
                          Composite comp, Region clip,
                          int srcx, int srcy, int dstx, int dsty,
                          int width, int height)
         {
             tracePrimitive(target);
             target.Blit(src, dst, comp, clip,
                         srcx, srcy, dstx, dsty, width, height);
         }
     }
 }
	/*
	* Copyright (c) 1999, 2004, Oracle and/or its affiliates. All rights reserved.
	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
	*
	* This code is free software; you can redistribute it and/or modify it
	* under the terms of the GNU General Public License version 2 only, as
	* published by the Free Software Foundation. Oracle designates this
	* particular file as subject to the "Classpath" exception as provided
	* by Oracle in the LICENSE file that accompanied this code.
	*
	* This code is distributed in the hope that it will be useful, but WITHOUT
	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
	* version 2 for more details (a copy is included in the LICENSE file that
	* accompanied this code).
	*
	* You should have received a copy of the GNU General Public License version
	* 2 along with this work; if not, write to the Free Software Foundation,
	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
	*
	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
	* or visit www.oracle.com if you need additional information or have any
	* questions.
	*/

	package sun.java2d.loops;

	import java.awt.Composite;
	import java.awt.CompositeContext;
	import java.awt.RenderingHints;
	import java.awt.image.ColorModel;
	import java.awt.image.Raster;
	import java.awt.image.WritableRaster;
	import java.lang.ref.WeakReference;
	import sun.java2d.loops.GraphicsPrimitive;
	import sun.java2d.SurfaceData;
	import sun.java2d.pipe.Region;
	import sun.java2d.pipe.SpanIterator;

	/**
	* Blit
	* 1) copies rectangle of pixels from one surface to another
	* 2) performs compositing of colors based upon a Composite
	* parameter
	*
	* precise behavior is undefined if the source surface
	* and the destination surface are the same surface
	* with overlapping regions of pixels
	*/

	public class Blit extends GraphicsPrimitive
	{
	public static final String methodSignature = "Blit(...)".toString();

	public static final int primTypeID = makePrimTypeID();

	private static RenderCache blitcache = new RenderCache(20);

	public static Blit locate(SurfaceType srctype,
	CompositeType comptype,
	SurfaceType dsttype)
	{
	return (Blit)
	GraphicsPrimitiveMgr.locate(primTypeID,
	srctype, comptype, dsttype);
	}

	public static Blit getFromCache(SurfaceType src,
	CompositeType comp,
	SurfaceType dst)
	{
	Object o = blitcache.get(src, comp, dst);
	if (o != null) {
	return (Blit) o;
	}

	Blit blit = locate(src, comp, dst);
	if (blit == null) {
	System.out.println("blit loop not found for:");
	System.out.println("src: "+src);
	System.out.println("comp: "+comp);
	System.out.println("dst: "+dst);
	} else {
	blitcache.put(src, comp, dst, blit);
	}
	return blit;
	}

	protected Blit(SurfaceType srctype,
	CompositeType comptype,
	SurfaceType dsttype)
	{
	super(methodSignature, primTypeID, srctype, comptype, dsttype);
	}

	public Blit(long pNativePrim,
	SurfaceType srctype,
	CompositeType comptype,
	SurfaceType dsttype)
	{
	super(pNativePrim, methodSignature, primTypeID, srctype, comptype, dsttype);
	}

	/**
	* All Blit implementors must have this invoker method
	*/
	public native void Blit(SurfaceData src, SurfaceData dst,
	Composite comp, Region clip,
	int srcx, int srcy,
	int dstx, int dsty,
	int width, int height);

	static {
	GraphicsPrimitiveMgr.registerGeneral(new Blit(null, null, null));
	}

	public GraphicsPrimitive makePrimitive(SurfaceType srctype,
	CompositeType comptype,
	SurfaceType dsttype)
	{
	/*
	System.out.println("Constructing general blit for:");
	System.out.println("src: "+srctype);
	System.out.println("comp: "+comptype);
	System.out.println("dst: "+dsttype);
	*/

	if (comptype.isDerivedFrom(CompositeType.Xor)) {
	GeneralXorBlit gxb = new GeneralXorBlit(srctype,
	comptype,
	dsttype);
	setupGeneralBinaryOp(gxb);
	return gxb;
	} else if (comptype.isDerivedFrom(CompositeType.AnyAlpha)) {
	return new GeneralMaskBlit(srctype, comptype, dsttype);
	} else {
	return AnyBlit.instance;
	}
	}

	private static class AnyBlit extends Blit {
	public static AnyBlit instance = new AnyBlit();

	public AnyBlit() {
	super(SurfaceType.Any, CompositeType.Any, SurfaceType.Any);
	}

	public void Blit(SurfaceData srcData,
	SurfaceData dstData,
	Composite comp,
	Region clip,
	int srcx, int srcy,
	int dstx, int dsty,
	int width, int height)
	{
	ColorModel srcCM = srcData.getColorModel();
	ColorModel dstCM = dstData.getColorModel();
	// REMIND: Should get RenderingHints from sg2d
	CompositeContext ctx = comp.createContext(srcCM, dstCM,
	new RenderingHints(null));
	Raster srcRas = srcData.getRaster(srcx, srcy, width, height);
	WritableRaster dstRas =
	(WritableRaster) dstData.getRaster(dstx, dsty, width, height);

	if (clip == null) {
	clip = Region.getInstanceXYWH(dstx, dsty, width, height);
	}
	int span[] = {dstx, dsty, dstx+width, dsty+height};
	SpanIterator si = clip.getSpanIterator(span);
	srcx -= dstx;
	srcy -= dsty;
	while (si.nextSpan(span)) {
	int w = span[2] - span[0];
	int h = span[3] - span[1];
	Raster tmpSrcRas = srcRas.createChild(srcx + span[0], srcy + span[1],
	w, h, 0, 0, null);
	WritableRaster tmpDstRas = dstRas.createWritableChild(span[0], span[1],
	w, h, 0, 0, null);
	ctx.compose(tmpSrcRas, tmpDstRas, tmpDstRas);
	}
	ctx.dispose();
	}
	}

	private static class GeneralMaskBlit extends Blit {
	MaskBlit performop;

	public GeneralMaskBlit(SurfaceType srctype,
	CompositeType comptype,
	SurfaceType dsttype)
	{
	super(srctype, comptype, dsttype);
	performop = MaskBlit.locate(srctype, comptype, dsttype);
	}

	public void Blit(SurfaceData srcData,
	SurfaceData dstData,
	Composite comp,
	Region clip,
	int srcx, int srcy,
	int dstx, int dsty,
	int width, int height)
	{
	performop.MaskBlit(srcData, dstData, comp, clip,
	srcx, srcy, dstx, dsty,
	width, height,
	null, 0, 0);
	}
	}

	private static class GeneralXorBlit
	extends Blit
	implements GeneralBinaryOp
	{
	Blit convertsrc;
	Blit convertdst;
	Blit performop;
	Blit convertresult;

	WeakReference srcTmp;
	WeakReference dstTmp;

	public GeneralXorBlit(SurfaceType srctype,
	CompositeType comptype,
	SurfaceType dsttype)
	{
	super(srctype, comptype, dsttype);
	}

	public void setPrimitives(Blit srcconverter,
	Blit dstconverter,
	GraphicsPrimitive genericop,
	Blit resconverter)
	{
	this.convertsrc = srcconverter;
	this.convertdst = dstconverter;
	this.performop = (Blit) genericop;
	this.convertresult = resconverter;
	}

	public synchronized void Blit(SurfaceData srcData,
	SurfaceData dstData,
	Composite comp,
	Region clip,
	int srcx, int srcy,
	int dstx, int dsty,
	int width, int height)
	{
	SurfaceData src, dst;
	Region opclip;
	int sx, sy, dx, dy;

	if (convertsrc == null) {
	src = srcData;
	sx = srcx;
	sy = srcy;
	} else {
	SurfaceData cachedSrc = null;
	if (srcTmp != null) {
	cachedSrc = (SurfaceData) srcTmp.get();
	}
	src = convertFrom(convertsrc, srcData, srcx, srcy,
	width, height, cachedSrc);
	sx = 0;
	sy = 0;
	if (src != cachedSrc) {
	srcTmp = new WeakReference(src);
	}
	}

	if (convertdst == null) {
	dst = dstData;
	dx = dstx;
	dy = dsty;
	opclip = clip;
	} else {
	// assert: convertresult != null
	SurfaceData cachedDst = null;
	if (dstTmp != null) {
	cachedDst = (SurfaceData) dstTmp.get();
	}
	dst = convertFrom(convertdst, dstData, dstx, dsty,
	width, height, cachedDst);
	dx = 0;
	dy = 0;
	opclip = null;
	if (dst != cachedDst) {
	dstTmp = new WeakReference(dst);
	}
	}

	performop.Blit(src, dst, comp, opclip,
	sx, sy, dx, dy,
	width, height);

	if (convertresult != null) {
	// assert: convertdst != null
	convertTo(convertresult, dst, dstData, clip,
	dstx, dsty, width, height);
	}
	}
	}

	public GraphicsPrimitive traceWrap() {
	return new TraceBlit(this);
	}

	private static class TraceBlit extends Blit {
	Blit target;

	public TraceBlit(Blit target) {
	super(target.getSourceType(),
	target.getCompositeType(),
	target.getDestType());
	this.target = target;
	}

	public GraphicsPrimitive traceWrap() {
	return this;
	}

	public void Blit(SurfaceData src, SurfaceData dst,
	Composite comp, Region clip,
	int srcx, int srcy, int dstx, int dsty,
	int width, int height)
	{
	tracePrimitive(target);
	target.Blit(src, dst, comp, clip,
	srcx, srcy, dstx, dsty, width, height);
	}
	}
	}