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#510: Fixes possible hang situation

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(cherry picked from commit 5501c0e7094d094623648dc9355d9b620da7bef8)
This commit is contained in:
Harald Kuhr 2020-01-02 14:55:16 +01:00
parent c087addb76
commit b0e6fbed9f
1 changed files with 10 additions and 9 deletions
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19
imageio/imageio-jpeg/src/main/java/com/twelvemonkeys/imageio/plugins/jpeg/JPEGSegmentImageInputStream.java
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@ -37,7 +37,7 @@ import javax.imageio.stream.ImageInputStream;
import javax.imageio.stream.ImageInputStreamImpl;
import java.io.EOFException;
import java.io.IOException;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
@ -58,12 +58,12 @@ final class JPEGSegmentImageInputStream extends ImageInputStreamImpl {
// TODO: Rewrite JPEGSegment (from metadata) to store stream pos/length, and be able to replay data, and use instead of Segment?
// TODO: Support multiple JPEG streams (SOI...EOI, SOI...EOI, ...) in a single file
final private ImageInputStream stream;
final private JPEGSegmentStreamWarningListener warningListener;
private final ImageInputStream stream;
private final JPEGSegmentStreamWarningListener warningListener;
final private ComponentIdSet componentIds = new ComponentIdSet();
private final ComponentIdSet componentIds = new ComponentIdSet();
private final List<Segment> segments = new ArrayList<Segment>(64);
private final List<Segment> segments = new ArrayList<>(64);
private int currentSegment = -1;
private Segment segment;
@ -275,7 +275,7 @@ final class JPEGSegmentImageInputStream extends ImageInputStreamImpl {
processWarningOccured(String.format("Duplicate component ID %d in SOF", id));
id++;
while (!componentIds.add(id) && componentIds.size() <= 16) {
while (componentIds.size() < 4 && !componentIds.add(id) && id < 255) {
id++;
}
@ -330,7 +330,7 @@ final class JPEGSegmentImageInputStream extends ImageInputStreamImpl {
}
static String asAsciiString(final byte[] data, final int offset, final int length) {
return new String(data, offset, length, Charset.forName("ascii"));
return new String(data, offset, length, StandardCharsets.US_ASCII);
}
private void streamInit() throws IOException {
@ -443,8 +443,9 @@ final class JPEGSegmentImageInputStream extends ImageInputStreamImpl {
}
@SuppressWarnings({"FinalizeDoesntCallSuperFinalize"})
@Deprecated
@Override
protected void finalize() throws Throwable {
protected void finalize() {
// Empty finalizer (for improved performance; no need to call super.finalize() in this case)
}
@ -585,7 +586,7 @@ final class JPEGSegmentImageInputStream extends ImageInputStreamImpl {
}
static final class ComponentIdSet {
final int[] values = new int[4]; // The native code don't support more than 4 components
final int[] values = new int[4]; // The native code doesn't support more than 4 components
int size;
boolean add(final int value) {