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#289, #493: Finally implemented subsampling for < 8 bit samples

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Harald Kuhr
2019-08-29 19:06:05 +02:00
parent a5def1ba3d
commit 0c2433dc9f
4 changed files with 263 additions and 20 deletions
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imageio/imageio-tiff/src/test/java/com/twelvemonkeys/imageio/plugins/tiff/TIFFImageReaderTest.java
+23
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@@ -708,6 +708,29 @@ public class TIFFImageReaderTest extends ImageReaderAbstractTest<TIFFImageReader
}
}
@Test
public void testReadWithSubsampleParamPixelsBinary() throws IOException {
ImageReader reader = createReader();
TestData data = new TestData(getClassLoaderResource("/tiff/ccitt/group3_2d.tif"), new Dimension(6, 4));
reader.setInput(data.getInputStream());
ImageReadParam param = reader.getDefaultReadParam();
BufferedImage image = null;
BufferedImage subsampled = null;
try {
image = reader.read(0, param);
param.setSourceSubsampling(2, 2, 0, 0);
subsampled = reader.read(0, param);
}
catch (IOException e) {
failBecause("Image could not be read", e);
}
assertSubsampledImageDataEquals("Subsampled image data does not match expected", image, subsampled, param);
}
@Test
public void testReadWithSubsampleParamPixelsJPEG() throws IOException {
// Tiled "new style" JPEG