Created a ViewImage rendering performance measurement test.

test/ViewImageJPGPerfTest.java

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+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.io.InputStream;
+
+import net.yacy.peers.graphics.EncodedImage;
+import net.yacy.server.serverObjects;
+
+// ViewImageJPGPerfTest.java
+// -----------------------
+// part of YaCy
+// (C) by Michael Peter Christen; mc@yacy.net
+// first published on http://www.anomic.de
+// Frankfurt, Germany, 2006
+// created 03.04.2006
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 2 of the License, or
+// (at your option) any later version.
+//
+// This program 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 for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+/**
+ * Test to measure JPG render performance by ViewImage
+ * 
+ * @author luc
+ *
+ */
+public class ViewImageJPGPerfTest {
+
+	private static final String TEST_IMG_RESOURCE = "/viewImageTest/test/JPEG_example_JPG_RIP_100.jpg";
+
+	private static byte[] getTestImageBytes() throws IOException {
+		InputStream inStream = ViewImageJPGPerfTest.class.getResourceAsStream(TEST_IMG_RESOURCE);
+		if (inStream == null) {
+			throw new FileNotFoundException(TEST_IMG_RESOURCE);
+		}
+		byte[] res = new byte[inStream.available()];
+		try {
+			inStream.read(res);
+		} finally {
+			inStream.close();
+		}
+		return res;
+	}
+	// TODO pour info dernier test : 11167ms
+
+	/**
+	 * Test image (JPEG_example_JPG_RIP_100.jpg) is scaled, and cropped.
+	 * 
+	 * @throws IOException
+	 */
+	public static void main(String args[]) throws IOException {
+		byte[] resourceb = getTestImageBytes();
+		serverObjects post = new serverObjects();
+		/* Scale test image to 1/10 */
+		post.put("maxwidth", "31");
+		post.put("maxheight", "23");
+		/* Make it square */
+		post.put("quadratic", "");
+
+		String urlString = ViewImageJPGPerfTest.class.getResource(TEST_IMG_RESOURCE).getFile();
+
+		long beginTime = System.nanoTime();
+		for (int step = 0; step < 500; step++) {
+			EncodedImage img = ViewImage.parseAndScale(post, true, urlString, "jpg", false, resourceb);
+			if (img == null) {
+				throw new IOException("Image render failed");
+			}
+		}
+		long endTime = System.nanoTime();
+		System.out.println("Render time(ms) : " + (endTime - beginTime) / 1000000);
+
+	}
+
+}