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Fix getNextChangingElement

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The Testimage is distored without this change.
lastChangchingElement must be reduced by 2 as sometimes the nextChanchingElement is bevore the last chanching element. Reset the last bits does not work if the number is higher.
This commit is contained in:
Oliver Schmidtmer
2016-05-24 16:39:59 +02:00
parent d4c9d53ea5
commit ceb2c82e5c
3 changed files with 6 additions and 1 deletions
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imageio/imageio-tiff/src/main/java/com/twelvemonkeys/imageio/plugins/tiff/CCITTFaxDecoderStream.java
+5 -1
View File
@@ -221,7 +221,11 @@ final class CCITTFaxDecoderStream extends FilterInputStream {
}
private int getNextChangingElement(final int a0, final boolean white) throws IOException {
int start = (lastChangingElement & 0xFFFF_FFFC) + (white ? 0 : 1);
int start = (lastChangingElement & 0xFFFF_FFFE) + (white ? 0 : 1);
if (start > 2) {
start -= 2;
}
if (a0 == 0) {
return start;
}