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CCITT EncodedByteAlign now default for RLE, always overridable.

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+ test case provided by @Schmidor
This commit is contained in:
Harald Kuhr 2018-01-17 18:13:22 +01:00
parent d564a6b338
commit a5471ef4c4
2 changed files with 20 additions and 3 deletions
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2
imageio/imageio-tiff/src/main/java/com/twelvemonkeys/imageio/plugins/tiff/CCITTFaxDecoderStream.java
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@ -106,7 +106,7 @@ final class CCITTFaxDecoderStream extends FilterInputStream {
switch (type) {
case TIFFBaseline.COMPRESSION_CCITT_MODIFIED_HUFFMAN_RLE:
optionByteAligned = true;
optionByteAligned = byteAligned;
optionG32D = false;
optionG3Fill = false;
optionUncompressed = false;

19
imageio/imageio-tiff/src/test/java/com/twelvemonkeys/imageio/plugins/tiff/CCITTFaxDecoderStreamTest.java
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@ -110,12 +110,18 @@ public class CCITTFaxDecoderStreamTest {
(byte) 0xc0 // 11 (000000 padding)
};
// 3W|1B|2W| 3W|1B|2W| 3W|1B|2W| 2W|2B|2W
// 1000|010|0111| 1000|010|0111| 1000|010|0111| 0111|11|0111
static final byte[] DATA_RLE_UNALIGNED = {
(byte)0x84, (byte)0xF0, (byte)0x9E,0x13, (byte)0xBE,(byte) 0xE0
};
// Image should be (6 x 4):
// 1 1 1 0 1 1 x x
// 1 1 1 0 1 1 x x
// 1 1 1 0 1 1 x x
// 1 1 0 0 1 1 x x
final BufferedImage image = new BufferedImage(6, 4, BufferedImage.TYPE_BYTE_BINARY);;
final BufferedImage image = new BufferedImage(6, 4, BufferedImage.TYPE_BYTE_BINARY);
@Before
public void init() {
@ -280,6 +286,17 @@ public class CCITTFaxDecoderStreamTest {
assertArrayEquals(imageData, bytes);
}
@Test
public void testDecodeType2NotByteAligned() throws IOException {
CCITTFaxDecoderStream stream = new CCITTFaxDecoderStream(new ByteArrayInputStream(DATA_RLE_UNALIGNED), 6,
TIFFBaseline.COMPRESSION_CCITT_MODIFIED_HUFFMAN_RLE, 1, 0L, false);
byte[] imageData = ((DataBufferByte) image.getData().getDataBuffer()).getData();
byte[] bytes = new byte[imageData.length];
new DataInputStream(stream).readFully(bytes);
assertArrayEquals(imageData, bytes);
}
@Test
public void testG3AOE() throws IOException {
InputStream inputStream = getClass().getResourceAsStream("/tiff/ccitt/g3aoe.tif");