Support for RUN LENGTH image decoding

src/net/sf/jcgm/core/Tile.java

@@ -91,12 +91,35 @@ public void paint(CGMDisplay d) {
 
 			this.bufferedImage=imageOut;
 			super.paint(d);
-		}else {
+		}else if(this.bytes!=null && this.compressionType==CompressionType.RUN_LENGTH) {
+			BufferedImage imageOut = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
+			byte[] imgdata = this.bytes.array();
+			int x = 0;
+			int y = 0;
+			for(int i=0;i<imgdata.length;i=i+5) {
+				int nbpixel =  (imgdata[i] <<8) + unsignedToBytes(imgdata[i+1]);
+				byte r = imgdata[i+2];
+				byte g = imgdata[i+3];
+				byte b = imgdata[i+4];
+				for(int j=0;j<nbpixel;j++) {
+					imageOut.setRGB(x, y, (r <<16) + (g <<8) + b);
+					x=x+1;
+					if(x>=width) {
+						x=0;
+						y++;
+					}	
+				}
+			}
+
+			this.bufferedImage=imageOut;
+			super.paint(d);
+		} else {
 			super.paint(d);
 		}
+	}
 
-
-
+	public static int unsignedToBytes(byte b) {
+		return b & 0xFF;
 	}
 
 	@Override

src/net/sf/jcgm/core/TileElement.java

@@ -118,6 +118,9 @@ protected void readSdrAndBitStream() throws IOException {
 			case T6:
 				readT6();
 				break;
+			case RUN_LENGTH:
+				this.bytes = readBytes();
+				break;
 			default:
 				unsupported("unsupported compression type " + this.compressionType);
 			}