Unittest for ByteAligned-Flag on CCITT Decoder
@@ -74,6 +74,13 @@ public class CCITTFaxDecoderStreamTest {
// Line 4: V-1, V0, V0 EOL EOL
static final byte[] DATA_G4 = { 0x04, 0x17, (byte) 0xF5, (byte) 0x80, 0x08, 0x00, (byte) 0x80 };
+ static final byte[] DATA_G4_ALIGNED = {
+ 0x04, 0x14, // 00000100 000101(00)
+ (byte) 0xE0, // 111 (00000)
+ (byte) 0xE0, // 111 (00000)
+ 0x58 // 01011 (000)
+ };
+
// TODO: Better tests (full A4 width scan lines?)
// From http://www.mikekohn.net/file_formats/tiff.php
@@ -261,4 +268,16 @@ public class CCITTFaxDecoderStreamTest {
byte decoded = (byte) inputStream.read();
assertEquals((byte) 0b10101010, decoded);
}
+
+ @Test
+ public void testDecodeType4ByteAligned() throws IOException {
+ CCITTFaxDecoderStream stream = new CCITTFaxDecoderStream(new ByteArrayInputStream(DATA_G4_ALIGNED), 6,
+ TIFFExtension.COMPRESSION_CCITT_T6, 1, 0L);
+ stream.setOptionByteAligned(true);
+
+ byte[] imageData = ((DataBufferByte) image.getData().getDataBuffer()).getData();
+ byte[] bytes = new byte[imageData.length];
+ new DataInputStream(stream).readFully(bytes);
+ assertArrayEquals(imageData, bytes);
+ }
}
