5151import javax .imageio .stream .ImageOutputStream ;
5252import javax .imageio .stream .ImageOutputStreamImpl ;
5353
54- import swingjs .jzlib .JZlib ;
55-
5654class CRC {
5755
5856 private static int [] crcTable = new int [256 ];
@@ -110,20 +108,24 @@ public ChunkStream(int type, ImageOutputStream stream) throws IOException {
110108 writeInt (type );
111109 }
112110
113- public int read () throws IOException {
111+ @ Override
112+ public int read () throws IOException {
114113 throw new RuntimeException ("Method not available" );
115114 }
116115
117- public int read (byte [] b , int off , int len ) throws IOException {
116+ @ Override
117+ public int read (byte [] b , int off , int len ) throws IOException {
118118 throw new RuntimeException ("Method not available" );
119119 }
120120
121- public void write (byte [] b , int off , int len ) throws IOException {
121+ @ Override
122+ public void write (byte [] b , int off , int len ) throws IOException {
122123 crc .update (b , off , len );
123124 stream .write (b , off , len );
124125 }
125126
126- public void write (int b ) throws IOException {
127+ @ Override
128+ public void write (int b ) throws IOException {
127129 crc .update (b );
128130 stream .write (b );
129131 }
@@ -142,7 +144,8 @@ public void finish() throws IOException {
142144 stream .flushBefore (pos );
143145 }
144146
145- protected void finalize () throws Throwable {
147+ @ Override
148+ protected void finalize () throws Throwable {
146149 // Empty finalizer (for improved performance; no need to call
147150 // super.finalize() in this case)
148151 }
@@ -198,29 +201,27 @@ private void finishChunk() throws IOException {
198201 stream .flushBefore (pos );
199202 }
200203
201- public int read () throws IOException {
204+ @ Override
205+ public int read () throws IOException {
202206 throw new RuntimeException ("Method not available" );
203207 }
204208
205- public int read (byte [] b , int off , int len ) throws IOException {
209+ @ Override
210+ public int read (byte [] b , int off , int len ) throws IOException {
206211 throw new RuntimeException ("Method not available" );
207212 }
208213
209- public void write (byte [] b , int off , int len ) throws IOException {
214+ @ Override
215+ public void write (byte [] b , int off , int len ) throws IOException {
210216 if (len == 0 ) {
211217 return ;
212218 }
213219
214220 if (!def .finished ()) {
215- def .setInput (b , off , len , true );
216- while (def .avail_in > 0 ) {
217- int err = deflate ();
218- if (err == JZlib .Z_STREAM_END )
219- break ;
220- }
221- // while (!def.needsInput()) {
222- // deflate();
223- // }
221+ def .setInput (b , off , len );
222+ while (!def .needsInput ()) {
223+ deflate ();
224+ }
224225 }
225226 }
226227
@@ -244,7 +245,8 @@ public void deflate() throws IOException {
244245 }
245246 }
246247
247- public void write (int b ) throws IOException {
248+ @ Override
249+ public void write (int b ) throws IOException {
248250 byte [] wbuf = new byte [1 ];
249251 wbuf [0 ] = (byte )b ;
250252 write (wbuf , 0 , 1 );
@@ -264,7 +266,8 @@ public void finish() throws IOException {
264266 }
265267 }
266268
267- protected void finalize () throws Throwable {
269+ @ Override
270+ protected void finalize () throws Throwable {
268271 // Empty finalizer (for improved performance; no need to call
269272 // super.finalize() in this case)
270273 }
@@ -331,7 +334,8 @@ public PNGImageWriter(ImageWriterSpi originatingProvider) {
331334 super (originatingProvider );
332335 }
333336
334- public void setOutput (Object output ) {
337+ @ Override
338+ public void setOutput (Object output ) {
335339 super .setOutput (output );
336340 if (output != null ) {
337341 if (!(output instanceof ImageOutputStream )) {
@@ -345,27 +349,32 @@ public void setOutput(Object output) {
345349
346350 private static int [] allowedProgressivePasses = { 1 , 7 };
347351
348- public ImageWriteParam getDefaultWriteParam () {
352+ @ Override
353+ public ImageWriteParam getDefaultWriteParam () {
349354 return new PNGImageWriteParam (getLocale ());
350355 }
351356
352- public IIOMetadata getDefaultStreamMetadata (ImageWriteParam param ) {
357+ @ Override
358+ public IIOMetadata getDefaultStreamMetadata (ImageWriteParam param ) {
353359 return null ;
354360 }
355361
356- public IIOMetadata getDefaultImageMetadata (ImageTypeSpecifier imageType ,
362+ @ Override
363+ public IIOMetadata getDefaultImageMetadata (ImageTypeSpecifier imageType ,
357364 ImageWriteParam param ) {
358365 PNGMetadata m = new PNGMetadata ();
359366 m .initialize (imageType , imageType .getSampleModel ().getNumBands ());
360367 return m ;
361368 }
362369
363- public IIOMetadata convertStreamMetadata (IIOMetadata inData ,
370+ @ Override
371+ public IIOMetadata convertStreamMetadata (IIOMetadata inData ,
364372 ImageWriteParam param ) {
365373 return null ;
366374 }
367375
368- public IIOMetadata convertImageMetadata (IIOMetadata inData ,
376+ @ Override
377+ public IIOMetadata convertImageMetadata (IIOMetadata inData ,
369378 ImageTypeSpecifier imageType ,
370379 ImageWriteParam param ) {
371380 // TODO - deal with imageType
@@ -1025,7 +1034,8 @@ private void initializeScaleTables(int[] sampleSize) {
10251034 }
10261035 }
10271036
1028- public void write (IIOMetadata streamMetadata ,
1037+ @ Override
1038+ public void write (IIOMetadata streamMetadata ,
10291039 IIOImage image ,
10301040 ImageWriteParam param ) throws IIOException {
10311041 if (stream == null ) {
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