ojluni/src/main/java/sun/java2d/loops/MaskBlit.java - platform/libcore.git - 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.lang.ref.WeakReference;
 import sun.java2d.loops.GraphicsPrimitive;
 import sun.java2d.SurfaceData;
 import sun.java2d.pipe.Region;

 /**
  * MaskBlit
  * 1) copies rectangle of pixels from one surface to another
  * 2) performs compositing of colors based upon a Composite
  *    parameter
  * 3) blends result of composite with destination using an
  *    alpha coverage mask
  * 4) the mask may be null in which case it should be treated
  *    as if it were an array of all opaque values (0xff)
  *
  * precise behavior is undefined if the source surface
  * and the destination surface are the same surface
  * with overlapping regions of pixels
  */

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

     public static final int primTypeID = makePrimTypeID();

     private static RenderCache blitcache = new RenderCache(20);

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

     public static MaskBlit getFromCache(SurfaceType src,
                                         CompositeType comp,
                                         SurfaceType dst)
     {
         Object o = blitcache.get(src, comp, dst);
         if (o != null) {
             return (MaskBlit) o;
         }
         MaskBlit blit = locate(src, comp, dst);
         if (blit == null) {
             System.out.println("mask 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 MaskBlit(SurfaceType srctype,
                        CompositeType comptype,
                        SurfaceType dsttype)
     {
         super(methodSignature, primTypeID, srctype, comptype, dsttype);
     }

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

     /**
      * All MaskBlit implementors must have this invoker method
      */
     public native void MaskBlit(SurfaceData src, SurfaceData dst,
                                 Composite comp, Region clip,
                                 int srcx, int srcy,
                                 int dstx, int dsty,
                                 int width, int height,
                                 byte[] mask, int maskoff, int maskscan);

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

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

         if (CompositeType.Xor.equals(comptype)) {
             throw new InternalError("Cannot construct MaskBlit for " +
                                     "XOR mode");
         }

         General ob = new General(srctype, comptype, dsttype);
         setupGeneralBinaryOp(ob);
         return ob;
     }

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

         WeakReference srcTmp;
         WeakReference dstTmp;

         public General(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 = (MaskBlit) genericop;
             this.convertresult = resconverter;
         }

         public synchronized void MaskBlit(SurfaceData srcData,
                                           SurfaceData dstData,
                                           Composite comp,
                                           Region clip,
                                           int srcx, int srcy,
                                           int dstx, int dsty,
                                           int width, int height,
                                           byte mask[], int offset, int scan)
         {
             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.MaskBlit(src, dst, comp, opclip,
                                sx, sy, dx, dy, width, height,
                                mask, offset, scan);

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

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

     private static class TraceMaskBlit extends MaskBlit {
         MaskBlit target;

         public TraceMaskBlit(MaskBlit target) {
             // We need to have the same NativePrim as our
             // target in case we are used with a TransformHelper
             super(target.getNativePrim(),
                   target.getSourceType(),
                   target.getCompositeType(),
                   target.getDestType());
             this.target = target;
         }

         public GraphicsPrimitive traceWrap() {
             return this;
         }

         public void MaskBlit(SurfaceData src, SurfaceData dst,
                              Composite comp, Region clip,
                              int srcx, int srcy, int dstx, int dsty,
                              int width, int height,
                              byte[] mask, int maskoff, int maskscan)
         {
             tracePrimitive(target);
             target.MaskBlit(src, dst, comp, clip,
                             srcx, srcy, dstx, dsty, width, height,
                             mask, maskoff, maskscan);
         }
     }
 }
	/*
	* 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.lang.ref.WeakReference;
	import sun.java2d.loops.GraphicsPrimitive;
	import sun.java2d.SurfaceData;
	import sun.java2d.pipe.Region;

	/**
	* MaskBlit
	* 1) copies rectangle of pixels from one surface to another
	* 2) performs compositing of colors based upon a Composite
	* parameter
	* 3) blends result of composite with destination using an
	* alpha coverage mask
	* 4) the mask may be null in which case it should be treated
	* as if it were an array of all opaque values (0xff)
	*
	* precise behavior is undefined if the source surface
	* and the destination surface are the same surface
	* with overlapping regions of pixels
	*/

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

	public static final int primTypeID = makePrimTypeID();

	private static RenderCache blitcache = new RenderCache(20);

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

	public static MaskBlit getFromCache(SurfaceType src,
	CompositeType comp,
	SurfaceType dst)
	{
	Object o = blitcache.get(src, comp, dst);
	if (o != null) {
	return (MaskBlit) o;
	}
	MaskBlit blit = locate(src, comp, dst);
	if (blit == null) {
	System.out.println("mask 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 MaskBlit(SurfaceType srctype,
	CompositeType comptype,
	SurfaceType dsttype)
	{
	super(methodSignature, primTypeID, srctype, comptype, dsttype);
	}

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

	/**
	* All MaskBlit implementors must have this invoker method
	*/
	public native void MaskBlit(SurfaceData src, SurfaceData dst,
	Composite comp, Region clip,
	int srcx, int srcy,
	int dstx, int dsty,
	int width, int height,
	byte[] mask, int maskoff, int maskscan);

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

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

	if (CompositeType.Xor.equals(comptype)) {
	throw new InternalError("Cannot construct MaskBlit for " +
	"XOR mode");
	}

	General ob = new General(srctype, comptype, dsttype);
	setupGeneralBinaryOp(ob);
	return ob;
	}

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

	WeakReference srcTmp;
	WeakReference dstTmp;

	public General(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 = (MaskBlit) genericop;
	this.convertresult = resconverter;
	}

	public synchronized void MaskBlit(SurfaceData srcData,
	SurfaceData dstData,
	Composite comp,
	Region clip,
	int srcx, int srcy,
	int dstx, int dsty,
	int width, int height,
	byte mask[], int offset, int scan)
	{
	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.MaskBlit(src, dst, comp, opclip,
	sx, sy, dx, dy, width, height,
	mask, offset, scan);

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

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

	private static class TraceMaskBlit extends MaskBlit {
	MaskBlit target;

	public TraceMaskBlit(MaskBlit target) {
	// We need to have the same NativePrim as our
	// target in case we are used with a TransformHelper
	super(target.getNativePrim(),
	target.getSourceType(),
	target.getCompositeType(),
	target.getDestType());
	this.target = target;
	}

	public GraphicsPrimitive traceWrap() {
	return this;
	}

	public void MaskBlit(SurfaceData src, SurfaceData dst,
	Composite comp, Region clip,
	int srcx, int srcy, int dstx, int dsty,
	int width, int height,
	byte[] mask, int maskoff, int maskscan)
	{
	tracePrimitive(target);
	target.MaskBlit(src, dst, comp, clip,
	srcx, srcy, dstx, dsty, width, height,
	mask, maskoff, maskscan);
	}
	}
	}