| /* |
| * Copyright (c) 2009, 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. |
| * |
| * 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. |
| */ |
| |
| /** |
| * @test |
| * @bug 6296893 |
| * @summary Test verifies that the isTopDown flag does not cause |
| * a writing of bmp image in wrong scanline layout. |
| * @run main TopDownTest |
| */ |
| |
| import java.awt.Color; |
| import java.awt.Graphics; |
| import java.awt.image.BufferedImage; |
| |
| import java.awt.image.IndexColorModel; |
| import java.io.File; |
| import java.io.IOException; |
| import javax.imageio.IIOImage; |
| import javax.imageio.ImageIO; |
| import javax.imageio.ImageWriteParam; |
| import javax.imageio.ImageWriter; |
| import javax.imageio.plugins.bmp.BMPImageWriteParam; |
| import javax.imageio.stream.ImageOutputStream; |
| import static java.awt.image.BufferedImage.TYPE_INT_RGB; |
| import static java.awt.image.BufferedImage.TYPE_BYTE_INDEXED; |
| |
| public class TopDownTest { |
| |
| public static void main(String[] args) throws IOException { |
| BufferedImage src = createTestImage(24); |
| |
| writeWithCompression(src, "BI_BITFIELDS"); |
| |
| writeWithCompression(src, "BI_RGB"); |
| |
| src = createTestImage(8); |
| writeWithCompression(src, "BI_RLE8"); |
| |
| src = createTestImage(4); |
| writeWithCompression(src, "BI_RLE4"); |
| |
| } |
| |
| private static void writeWithCompression(BufferedImage src, |
| String compression) throws IOException |
| { |
| System.out.println("Compression: " + compression); |
| ImageWriter writer = ImageIO.getImageWritersByFormatName("BMP").next(); |
| if (writer == null) { |
| throw new RuntimeException("Test failed: no bmp writer available"); |
| } |
| File fout = File.createTempFile(compression + "_", ".bmp", |
| new File(".")); |
| |
| ImageOutputStream ios = ImageIO.createImageOutputStream(fout); |
| writer.setOutput(ios); |
| |
| BMPImageWriteParam param = (BMPImageWriteParam) |
| writer.getDefaultWriteParam(); |
| param.setCompressionMode(ImageWriteParam.MODE_EXPLICIT); |
| param.setCompressionType(compression); |
| param.setTopDown(true); |
| writer.write(null, new IIOImage(src, null, null), param); |
| writer.dispose(); |
| ios.flush(); |
| ios.close(); |
| |
| BufferedImage dst = ImageIO.read(fout); |
| |
| verify(dst); |
| } |
| |
| private static void verify(BufferedImage dst) { |
| int top_rgb = dst.getRGB(50, 25); |
| System.out.printf("top_rgb: %x\n", top_rgb); |
| int bot_rgb = dst.getRGB(50, 75); |
| System.out.printf("bot_rgb: %x\n", bot_rgb); |
| |
| // expect to see blue color on the top of image |
| if (top_rgb != 0xff0000ff) { |
| throw new RuntimeException("Invaid top color: " + |
| Integer.toHexString(bot_rgb)); |
| } |
| if (bot_rgb != 0xffff0000) { |
| throw new RuntimeException("Invalid bottom color: " + |
| Integer.toHexString(bot_rgb)); |
| } |
| } |
| |
| private static BufferedImage createTestImage(int bpp) { |
| |
| BufferedImage img = null; |
| switch (bpp) { |
| case 8: |
| img = new BufferedImage(100, 100, TYPE_BYTE_INDEXED); |
| break; |
| case 4: { |
| byte[] r = new byte[16]; |
| byte[] g = new byte[16]; |
| byte[] b = new byte[16]; |
| |
| r[1] = (byte)0xff; |
| b[0] = (byte)0xff; |
| |
| IndexColorModel icm = new IndexColorModel(4, 16, r, g, b); |
| img = new BufferedImage(100, 100, TYPE_BYTE_INDEXED, icm); |
| } |
| break; |
| case 24: |
| default: |
| img = new BufferedImage(100, 100, TYPE_INT_RGB); |
| } |
| Graphics g = img.createGraphics(); |
| g.setColor(Color.blue); |
| g.fillRect(0, 0, 100, 50); |
| g.setColor(Color.red); |
| g.fillRect(0, 50, 100, 50); |
| g.dispose(); |
| return img; |
| } |
| } |