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#433: Test case for offset issue.

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This commit is contained in:
Harald Kuhr 2018-08-18 13:17:43 +02:00
parent 4afa934251
commit 6f9c83a0a9
1 changed files with 34 additions and 4 deletions
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36
imageio/imageio-jpeg/src/test/java/com/twelvemonkeys/imageio/plugins/jpeg/JPEGImageReaderTest.java
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@ -53,8 +53,7 @@ import java.awt.color.ColorSpace;
import java.awt.color.ICC_Profile;
import java.awt.image.BufferedImage;
import java.awt.image.DataBufferByte;
import java.io.EOFException;
import java.io.IOException;
import java.io.*;
import java.util.*;
import java.util.List;
@ -100,7 +99,6 @@ public class JPEGImageReaderTest extends ImageReaderAbstractTest<JPEGImageReader
new TestData(getClassLoaderResource("/jpeg/app-marker-missing-null-term.jpg"), new Dimension(200, 150)),
new TestData(getClassLoaderResource("/jpeg/jfif-16bit-dqt.jpg"), new Dimension(204, 131)),
new TestData(getClassLoaderResource("/jpeg/jfif-grayscale-thumbnail.jpg"), new Dimension(2547, 1537)), // Non-compliant JFIF with 8 bit grayscale thumbnail
new TestData(getClassLoaderResource("/jpeg/jfif-with-preview-as-second-image.jpg"), new Dimension(3968, 2976), new Dimension(640, 480)), // JFIF, full size + preview
new TestData(getClassLoaderResource("/jpeg-lossless/8_ls.jpg"), new Dimension(800, 535)), // Lossless gray, 8 bit
new TestData(getClassLoaderResource("/jpeg-lossless/16_ls.jpg"), new Dimension(800, 535)), // Lossless gray, 16 bit
new TestData(getClassLoaderResource("/jpeg-lossless/24_ls.jpg"), new Dimension(800, 535)), // Lossless RGB, 8 bit per component (24 bit)
@ -1807,4 +1805,36 @@ public class JPEGImageReaderTest extends ImageReaderAbstractTest<JPEGImageReader
reader.dispose();
}
}
@Test
public void testStreamOffset() throws IOException {
// Tests a known issue:
// If the JPEGImageReader reads an embedded JPEG stream, we can't assume SOI starts at pos 0,
// instead, we'll just assume SOI at the current stream position.
JPEGImageReader reader = createReader();
try {
// Prepend the data with random padding
InputStream input = new SequenceInputStream(new ByteArrayInputStream(new byte[42]),
getClass().getResourceAsStream("/jpeg/gray-sample.jpg"));
ImageInputStream stream = ImageIO.createImageInputStream(input);
// Skip padding
stream.seek(42);
reader.setInput(stream);
assertEquals(386, reader.getWidth(0));
assertEquals(396, reader.getHeight(0));
BufferedImage image = reader.read(0, null);
assertNotNull(image);
assertEquals(386, image.getWidth());
assertEquals(396, image.getHeight());
} finally {
reader.dispose();
}
}
}