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Add BufferedImage cache

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This commit is contained in:
Mike Primm 2011-05-21 00:30:42 -05:00
parent 024e7dc96c
commit 325f069b46
3 changed files with 68 additions and 10 deletions
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5
src/main/java/org/dynmap/flat/FlatMap.java
View File

@ -19,6 +19,7 @@ import org.dynmap.MapManager;
import org.dynmap.MapTile;
import org.dynmap.MapType;
import org.dynmap.debug.Debug;
import org.dynmap.kzedmap.KzedMap;
import org.dynmap.MapChunkCache;
public class FlatMap extends MapType {
@ -80,7 +81,7 @@ public class FlatMap extends MapType {
boolean isnether = (w.getEnvironment() == Environment.NETHER) && (maximumHeight == 127);
boolean rendered = false;
BufferedImage im = new BufferedImage(t.size, t.size, BufferedImage.TYPE_INT_RGB);
BufferedImage im = KzedMap.allocateBufferedImage(t.size, t.size);
WritableRaster raster = im.getRaster();
int[] pixel = new int[4];
@ -177,7 +178,7 @@ public class FlatMap extends MapType {
} catch (java.lang.NullPointerException e) {
Debug.error("Failed to save image (NullPointerException): " + fname.getPath(), e);
}
img.flush();
KzedMap.freeBufferedImage(img);
MapManager.mapman.pushUpdate(mtile.getWorld(),
new Client.Tile(mtile.getFilename()));
}

15
src/main/java/org/dynmap/kzedmap/DefaultTileRenderer.java
View File

@ -1,7 +1,5 @@
package org.dynmap.kzedmap;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.image.BufferedImage;
import java.awt.image.WritableRaster;
import java.io.File;
@ -62,8 +60,8 @@ public class DefaultTileRenderer implements MapTileRenderer {
public boolean render(MapChunkCache cache, KzedMapTile tile, File outputFile) {
World world = tile.getWorld();
boolean isnether = (world.getEnvironment() == Environment.NETHER);
BufferedImage im = new BufferedImage(KzedMap.tileWidth, KzedMap.tileHeight, BufferedImage.TYPE_INT_RGB);
BufferedImage zim = new BufferedImage(KzedMap.tileWidth/2, KzedMap.tileHeight/2, BufferedImage.TYPE_INT_RGB);
BufferedImage im = KzedMap.allocateBufferedImage(KzedMap.tileWidth, KzedMap.tileHeight);
BufferedImage zim = KzedMap.allocateBufferedImage(KzedMap.tileWidth/2, KzedMap.tileHeight/2);
WritableRaster r = im.getRaster();
WritableRaster zr = zim.getRaster();
boolean isempty = true;
@ -208,9 +206,11 @@ public class DefaultTileRenderer implements MapTileRenderer {
} catch (IndexOutOfBoundsException e) {
}
boolean zIm_allocated = false;
if (zIm == null) {
/* create new one */
zIm = new BufferedImage(KzedMap.tileWidth, KzedMap.tileHeight, BufferedImage.TYPE_INT_RGB);
zIm = KzedMap.allocateBufferedImage(KzedMap.tileWidth, KzedMap.tileHeight);
zIm_allocated = true;
Debug.debug("New zoom-out tile created " + zmtile.getFilename());
} else {
Debug.debug("Loaded zoom-out tile from " + zmtile.getFilename());
@ -219,7 +219,7 @@ public class DefaultTileRenderer implements MapTileRenderer {
/* blit scaled rendered tile onto zoom-out tile */
WritableRaster zim = zIm.getRaster();
zim.setRect(ox, oy, zimg.getRaster());
zimg.flush();
KzedMap.freeBufferedImage(zimg);
/* save zoom-out tile */
@ -231,6 +231,9 @@ public class DefaultTileRenderer implements MapTileRenderer {
} catch (java.lang.NullPointerException e) {
Debug.error("Failed to save zoom-out tile (NullPointerException): " + zoomFile.getName(), e);
}
if(zIm_allocated)
KzedMap.freeBufferedImage(zIm);
else
zIm.flush();
/* Push updates for both files.*/
MapManager.mapman.pushUpdate(mtile.getWorld(),

54
src/main/java/org/dynmap/kzedmap/KzedMap.java
View File

@ -1,7 +1,10 @@
package org.dynmap.kzedmap;
import java.awt.image.BufferedImage;
import java.io.File;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.logging.Logger;
@ -37,6 +40,13 @@ public class KzedMap extends MapType {
MapTileRenderer[] renderers;
ZoomedTileRenderer zoomrenderer;
/* BufferedImage cache - we use the same things a lot... */
private static Object lock = new Object();
private static HashMap<Long, LinkedList<BufferedImage>> imgcache =
new HashMap<Long, LinkedList<BufferedImage>>(); /* Indexed by resolution - X<<32+Y */
private static int[] zerobuf = new int[128];
private static final int CACHE_LIMIT = 10;
public KzedMap(ConfigurationNode configuration) {
Log.info("Loading renderers for map '" + getClass().toString() + "'...");
List<MapTileRenderer> renderers = configuration.<MapTileRenderer>createInstances("renderers", new Class<?>[0], new Object[0]);
@ -246,4 +256,48 @@ public class KzedMap extends MapType {
else
return y - (y % zTileHeight);
}
/**
* Allocate buffered image from pool, if possible
* @param x - x dimension
* @param y - y dimension
*/
public static BufferedImage allocateBufferedImage(int x, int y) {
BufferedImage img = null;
synchronized(lock) {
long k = (x<<16) + y;
LinkedList<BufferedImage> ll = imgcache.get(k);
if(ll != null) {
img = ll.poll();
}
}
if(img != null) { /* Got it - reset it for use */
if(zerobuf.length < x)
zerobuf = new int[x];
img.setRGB(0, 0, x, y, zerobuf, 0, 0);
}
else {
img = new BufferedImage(x, y, BufferedImage.TYPE_INT_RGB);
}
return img;
}
/**
* Return buffered image to pool
*/
public static void freeBufferedImage(BufferedImage img) {
img.flush();
synchronized(lock) {
long k = (img.getWidth()<<16) + img.getHeight();
LinkedList<BufferedImage> ll = imgcache.get(k);
if(ll == null) {
ll = new LinkedList<BufferedImage>();
imgcache.put(k, ll);
}
if(ll.size() < CACHE_LIMIT) {
ll.add(img);
img = null;
}
}
}
}