Add multiple quality levels for JPG encoding - adjust default to 0.85

src/main/java/org/dynmap/DynmapWorld.java

@@ -6,7 +6,6 @@ import java.util.List;
 import org.bukkit.World;
 import org.bukkit.Location;
 import org.dynmap.debug.Debug;
-import org.dynmap.kzedmap.KzedMap;
 import org.dynmap.utils.DynmapBufferedImage;
 import org.dynmap.utils.FileLockManager;
 import org.dynmap.utils.MapChunkCache;
@@ -447,7 +446,7 @@ public class DynmapWorld {
                 try {
                     if(!zf.getParentFile().exists())
                         zf.getParentFile().mkdirs();
-                    FileLockManager.imageIOWrite(zIm, pd.fmt.getFileExt(), zf);
+                    FileLockManager.imageIOWrite(zIm, pd.fmt, zf);
                     Debug.debug("Saved zoom-out tile at " + zf.getPath());
                 } catch (IOException e) {
                     Debug.error("Failed to save zoom-out tile: " + zf.getName(), e);

src/main/java/org/dynmap/MapType.java

@@ -7,14 +7,26 @@ import org.json.simple.JSONObject;
 
 public abstract class MapType {
     public enum ImageFormat {
-        FORMAT_PNG("png"),
+        FORMAT_PNG("png", "png", 0.0f),
-        FORMAT_JPG("jpg");
+        FORMAT_JPG75("jpg-q75", "jpg", 0.75f),
-        
+        FORMAT_JPG80("jpg-q80", "jpg", 0.80f),
+        FORMAT_JPG85("jpg-q85", "jpg", 0.85f),
+        FORMAT_JPG("jpg", "jpg", 0.85f),
+        FORMAT_JPG90("jpg-q90", "jpg", 0.90f),
+        FORMAT_JPG95("jpg-q95", "jpg", 0.95f),
+        FORMAT_JPG100("jpg-q100", "jpg", 1.00f);
+        String id;
         String ext;
-        ImageFormat(String ext) {
+        float qual;
+        
+        ImageFormat(String id, String ext, float quality) {
+            this.id = id;
             this.ext = ext;
+            this.qual = quality;
         }
+        public String getID() { return id; }
         public String getFileExt() { return ext; }
+        public float getQuality() { return qual; }
     };
 
     public abstract MapTile[] getTiles(Location l);

src/main/java/org/dynmap/flat/FlatMap.java

@@ -9,8 +9,6 @@ import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
 
-import javax.imageio.ImageIO;
-
 import org.bukkit.Location;
 import org.bukkit.World;
 import org.bukkit.World.Environment;
@@ -23,9 +21,7 @@ import org.dynmap.MapManager;
 import org.dynmap.TileHashManager;
 import org.dynmap.MapTile;
 import org.dynmap.MapType;
-import org.dynmap.MapType.MapStep;
 import org.dynmap.debug.Debug;
-import org.dynmap.kzedmap.KzedMap;
 import org.dynmap.utils.DynmapBufferedImage;
 import org.dynmap.utils.FileLockManager;
 import org.dynmap.utils.MapChunkCache;
@@ -312,7 +308,7 @@ public class FlatMap extends MapType {
                 if(!outputFile.getParentFile().exists())
                     outputFile.getParentFile().mkdirs();
                 try {
-                    FileLockManager.imageIOWrite(im.buf_img, "png", outputFile);
+                    FileLockManager.imageIOWrite(im.buf_img, ImageFormat.FORMAT_PNG, outputFile);
                 } catch (IOException e) {
                     Debug.error("Failed to save image: " + outputFile.getPath(), e);
                 } catch (java.lang.NullPointerException e) {
@@ -343,7 +339,7 @@ public class FlatMap extends MapType {
                     if(!dayfile.getParentFile().exists())
                         dayfile.getParentFile().mkdirs();
                     try {
-                        FileLockManager.imageIOWrite(im_day.buf_img, "png", dayfile);
+                        FileLockManager.imageIOWrite(im_day.buf_img, ImageFormat.FORMAT_PNG, dayfile);
                     } catch (IOException e) {
                         Debug.error("Failed to save image: " + dayfile.getPath(), e);
                     } catch (java.lang.NullPointerException e) {
@@ -585,6 +581,7 @@ public class FlatMap extends MapType {
         s(o, "mapzoomin", c.getInteger("mapzoomin", 3));
         s(o, "mapzoomout", world.getExtraZoomOutLevels());
         s(o, "compassview", "S");   /* Always from south */
+        s(o, "image-format", ImageFormat.FORMAT_PNG.getFileExt());
         a(worldObject, "maps", o);
     }
 }

src/main/java/org/dynmap/hdmap/HDMap.java

@@ -91,10 +91,16 @@ public class HDMap extends MapType {
         }
         String fmt = configuration.getString("image-format", "png");
         /* Only allow png or jpg */
-        if(fmt.equals(IMGFORMAT_PNG))
+        for(ImageFormat f : ImageFormat.values()) {
+            if(fmt.equals(f.getID())) {
+                imgformat = f;
+                break;
+            }
+        }
+        if(imgformat == null) {
+            Log.severe("HDMap '"+name+"' set invalid image-format: " + fmt);
             imgformat = ImageFormat.FORMAT_PNG;
-        else
+        }   
-            imgformat = ImageFormat.FORMAT_JPG;
     }
 
     public HDShader getShader() { return shader; }

src/main/java/org/dynmap/hdmap/IsoHDPerspective.java

@@ -1041,7 +1041,7 @@ public class IsoHDPerspective implements HDPerspective {
                         if(!f.getParentFile().exists())
                             f.getParentFile().mkdirs();
                         try {
-                            FileLockManager.imageIOWrite(im[i].buf_img, fmt.getFileExt(), f);
+                            FileLockManager.imageIOWrite(im[i].buf_img, fmt, f);
                         } catch (IOException e) {
                             Debug.error("Failed to save image: " + f.getPath(), e);
                         } catch (java.lang.NullPointerException e) {
@@ -1074,7 +1074,7 @@ public class IsoHDPerspective implements HDPerspective {
                             if(!f.getParentFile().exists())
                                 f.getParentFile().mkdirs();
                             try {
-                                FileLockManager.imageIOWrite(dayim[i].buf_img, fmt.getFileExt(), f);
+                                FileLockManager.imageIOWrite(dayim[i].buf_img, fmt, f);
                             } catch (IOException e) {
                                 Debug.error("Failed to save image: " + f.getPath(), e);
                             } catch (java.lang.NullPointerException e) {

src/main/java/org/dynmap/kzedmap/DefaultTileRenderer.java

@@ -18,6 +18,7 @@ import org.dynmap.ColorScheme;
 import org.dynmap.ConfigurationNode;
 import org.dynmap.DynmapWorld;
 import org.dynmap.MapManager;
+import org.dynmap.MapType.ImageFormat;
 import org.dynmap.TileHashManager;
 import org.dynmap.debug.Debug;
 import org.dynmap.utils.DynmapBufferedImage;
@@ -276,7 +277,7 @@ public class DefaultTileRenderer implements MapTileRenderer {
                 if(!fname.getParentFile().exists())
                     fname.getParentFile().mkdirs();
                 try {
-                    FileLockManager.imageIOWrite(img.buf_img, "png", fname);
+                    FileLockManager.imageIOWrite(img.buf_img, ImageFormat.FORMAT_PNG, fname);
                 } catch (IOException e) {
                     Debug.error("Failed to save image: " + fname.getPath(), e);
                 } catch (java.lang.NullPointerException e) {
@@ -306,7 +307,7 @@ public class DefaultTileRenderer implements MapTileRenderer {
                     if(!dfname.getParentFile().exists())
                         dfname.getParentFile().mkdirs();
                     try {
-                        FileLockManager.imageIOWrite(img_day.buf_img, "png", dfname);
+                        FileLockManager.imageIOWrite(img_day.buf_img, ImageFormat.FORMAT_PNG, dfname);
                     } catch (IOException e) {
                         Debug.error("Failed to save image: " + dfname.getPath(), e);
                     } catch (java.lang.NullPointerException e) {
@@ -390,7 +391,7 @@ public class DefaultTileRenderer implements MapTileRenderer {
             zoomFile.getParentFile().mkdirs();
 
         try {
-            FileLockManager.imageIOWrite(zIm, "png", zoomFile);
+            FileLockManager.imageIOWrite(zIm, ImageFormat.FORMAT_PNG, zoomFile);
             Debug.debug("Saved zoom-out tile at " + zoomFile.getName());
         } catch (IOException e) {
             Debug.error("Failed to save zoom-out tile: " + zoomFile.getName(), e);
@@ -589,6 +590,7 @@ public class DefaultTileRenderer implements MapTileRenderer {
         s(o, "mapzoomin", c.getInteger("mapzoomin", 2));
         s(o, "mapzoomout", world.getExtraZoomOutLevels()+1);
         s(o, "compassview", "SE");   /* Always from southeast */
+        s(o, "image-format", ImageFormat.FORMAT_PNG.getFileExt());
         a(worldObject, "maps", o);
     }
 }

src/main/java/org/dynmap/kzedmap/KzedMap.java

@@ -1,14 +1,9 @@
 package org.dynmap.kzedmap;
 
 import org.dynmap.DynmapWorld;
-import java.awt.image.BufferedImage;
 import java.io.File;
 import java.util.ArrayList;
-import java.util.Arrays;
 import java.util.Collections;
-import java.util.HashMap;
-import java.util.HashSet;
-import java.util.LinkedList;
 import java.util.List;
 import java.util.logging.Logger;
 
@@ -19,16 +14,8 @@ import org.dynmap.Log;
 import org.dynmap.MapManager;
 import org.dynmap.MapTile;
 import org.dynmap.MapType;
-import org.dynmap.MapType.MapStep;
-import org.dynmap.utils.DynmapBufferedImage;
 import org.dynmap.utils.MapChunkCache;
-import org.dynmap.utils.Vector3D;
 import org.json.simple.JSONObject;
-import java.awt.image.DataBufferInt;
-import java.awt.image.DataBuffer;
-import java.awt.image.WritableRaster;
-import java.awt.image.ColorModel;
-import java.awt.image.Raster;
 
 public class KzedMap extends MapType {
     protected static final Logger log = Logger.getLogger("Minecraft");

src/main/java/org/dynmap/utils/FileLockManager.java

@@ -1,17 +1,22 @@
 package org.dynmap.utils;
 import java.io.ByteArrayOutputStream;
 import java.io.File;
-import java.io.FileNotFoundException;
-import java.io.FileOutputStream;
 import java.io.RandomAccessFile;
 import java.util.HashMap;
+import java.util.Iterator;
 import java.awt.image.BufferedImage;
 import java.awt.image.DirectColorModel;
 import java.awt.image.WritableRaster;
 import java.io.IOException;
+
+import javax.imageio.IIOImage;
 import javax.imageio.ImageIO;
+import javax.imageio.ImageWriteParam;
+import javax.imageio.ImageWriter;
+import javax.imageio.stream.ImageOutputStream;
 
 import org.dynmap.Log;
+import org.dynmap.MapType.ImageFormat;
 import org.dynmap.debug.Debug;
 /**
  * Implements soft-locks for prevent concurrency issues with file updates
@@ -141,13 +146,13 @@ public class FileLockManager {
     /**
      * Wrapper for IOImage.write - implements retries for busy files
      */
-    public static void imageIOWrite(BufferedImage img, String type, File fname) throws IOException {
+    public static void imageIOWrite(BufferedImage img, ImageFormat fmt, File fname) throws IOException {
         int retrycnt = 0;
         boolean done = false;
         byte[] rslt;
         synchronized(baos_lock) {
             baos.reset();
-            if(type.equals("jpg")) {
+            if(fmt.getFileExt().equals("jpg")) {
                 WritableRaster raster = img.getRaster();
                 WritableRaster newRaster = raster.createWritableChild(0, 0, img.getWidth(),
                           img.getHeight(), 0, 0, new int[] {0, 1, 2});
@@ -156,11 +161,31 @@ public class FileLockManager {
                 cm.getRedMask(), cm.getGreenMask(), cm.getBlueMask());
                 // now create the new buffer that is used ot write the image:
                 BufferedImage rgbBuffer = new BufferedImage(newCM, newRaster, false, null);
-                ImageIO.write(rgbBuffer, type, baos); /* Write to byte array stream - prevent bogus I/O errors */
+                
+                // Find a jpeg writer
+                ImageWriter writer = null;
+                Iterator iter = ImageIO.getImageWritersByFormatName("jpg");
+                if (iter.hasNext()) {
+                    writer = (ImageWriter)iter.next();
+                }
+                if(writer == null) {
+                    Log.severe("No JPEG ENCODER - Java VM does not support JPEG encoding");
+                    return;
+                }
+                ImageWriteParam iwp = writer.getDefaultWriteParam();
+                iwp.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
+                iwp.setCompressionQuality(fmt.getQuality());
+
+                ImageOutputStream ios = ImageIO.createImageOutputStream(baos);
+                writer.setOutput(ios);
+
+                writer.write(null, new IIOImage(rgbBuffer, null, null), iwp);
+                writer.dispose();
+
                 rgbBuffer.flush();
             }
             else {
-                ImageIO.write(img, type, baos); /* Write to byte array stream - prevent bogus I/O errors */
+                ImageIO.write(img, fmt.getFileExt(), baos); /* Write to byte array stream - prevent bogus I/O errors */
             }
             rslt = baos.toByteArray();
         }