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<title>openjpeg/src/lib/openjp2, branch master-cdist</title>
<subtitle>Fork of openjpeg library for JPEG2000 encoding and decoding</subtitle>
<id>https://git.carlh.net/cgit/openjpeg/atom?h=master-cdist</id>
<link rel='self' href='https://git.carlh.net/cgit/openjpeg/atom?h=master-cdist'/>
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<updated>2020-05-20T19:10:55Z</updated>
<entry>
<title>Merge pull request #1211 from sebras/master</title>
<updated>2020-05-20T19:10:55Z</updated>
<author>
<name>Even Rouault</name>
<email>even.rouault@spatialys.com</email>
</author>
<published>2020-05-20T19:10:55Z</published>
<link rel='alternate' type='text/html' href='https://git.carlh.net/cgit/openjpeg/commit/?id=19ef7f26c43f689b627aad642da7f6150893b863'/>
<id>urn:sha1:19ef7f26c43f689b627aad642da7f6150893b863</id>
<content type='text'>
Add check to validate SGcod/SPcoc/SPcod parameter values.</content>
</entry>
<entry>
<title>Add support for generation of PLT markers in encoder</title>
<updated>2020-04-21T13:55:44Z</updated>
<author>
<name>Even Rouault</name>
<email>even.rouault@spatialys.com</email>
</author>
<published>2020-04-21T13:55:44Z</published>
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<id>urn:sha1:4edb8c83374f52cd6a8f2c7c875e8ffacccb5fa5</id>
<content type='text'>
* -PLT switch added to opj_compress
* Add a opj_encoder_set_extra_options() function that
  accepts a PLT=YES option, and could be expanded later
  for other uses.

-------

Testing with a Sentinel2 10m band, T36JTT_20160914T074612_B02.jp2,
coming from S2A_MSIL1C_20160914T074612_N0204_R135_T36JTT_20160914T081456.SAFE

Decompress it to TIFF:
```
opj_uncompress -i T36JTT_20160914T074612_B02.jp2 -o T36JTT_20160914T074612_B02.tif
```

Recompress it with similar parameters as original:
```
opj_compress -n 5 -c [256,256],[256,256],[256,256],[256,256],[256,256] -t 1024,1024 -PLT -i T36JTT_20160914T074612_B02.tif -o T36JTT_20160914T074612_B02_PLT.jp2
```

Dump codestream detail with GDAL dump_jp2.py utility (https://github.com/OSGeo/gdal/blob/master/gdal/swig/python/samples/dump_jp2.py)
```
python dump_jp2.py T36JTT_20160914T074612_B02.jp2 &gt; /tmp/dump_sentinel2_ori.txt
python dump_jp2.py T36JTT_20160914T074612_B02_PLT.jp2 &gt; /tmp/dump_sentinel2_openjpeg_plt.txt
```

The diff between both show very similar structure, and identical number of packets in PLT markers

Now testing with Kakadu (KDU803_Demo_Apps_for_Linux-x86-64_200210)

Full file decompression:
```
kdu_expand -i T36JTT_20160914T074612_B02_PLT.jp2 -o tmp.tif

Consumed 121 tile-part(s) from a total of 121 tile(s).
Consumed 80,318,806 codestream bytes (excluding any file format) = 5.329697
bits/pel.
Processed using the multi-threaded environment, with
    8 parallel threads of execution
```

Partial decompresson (presumably using PLT markers):
```
kdu_expand -i T36JTT_20160914T074612_B02.jp2 -o tmp.pgm -region "{0.5,0.5},{0.01,0.01}"
kdu_expand -i T36JTT_20160914T074612_B02_PLT.jp2 -o tmp2.pgm  -region "{0.5,0.5},{0.01,0.01}"
diff tmp.pgm tmp2.pgm &amp;&amp; echo "same !"
```

-------

Funded by ESA for S2-MPC project
</content>
</entry>
<entry>
<title>struct opj_j2k: remove unused fields, and add some documentation</title>
<updated>2020-04-18T16:25:44Z</updated>
<author>
<name>Even Rouault</name>
<email>even.rouault@spatialys.com</email>
</author>
<published>2020-04-18T16:25:44Z</published>
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<id>urn:sha1:64689d05dfaaf52105581d93fb1eb173b20829a4</id>
<content type='text'>
</content>
</entry>
<entry>
<title>Fix warnings about signed/unsigned casts in pi.c</title>
<updated>2020-04-16T21:34:10Z</updated>
<author>
<name>Even Rouault</name>
<email>even.rouault@spatialys.com</email>
</author>
<published>2020-04-16T18:52:44Z</published>
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<id>urn:sha1:271a71ef0f1dd4740c9f4474279c7da8d15850c9</id>
<content type='text'>
</content>
</entry>
<entry>
<title>Rename mis-named function opj_tcd_get_encoded_tile_size() to opj_tcd_get_encoder_input_buffer_size()</title>
<updated>2020-04-16T18:33:22Z</updated>
<author>
<name>Even Rouault</name>
<email>even.rouault@spatialys.com</email>
</author>
<published>2020-04-16T18:33:22Z</published>
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<id>urn:sha1:221a801a97a3ea968a311f7905c18a1eb7f034c4</id>
<content type='text'>
</content>
</entry>
<entry>
<title>Implement writing of IMF profiles</title>
<updated>2020-02-12T14:55:25Z</updated>
<author>
<name>Even Rouault</name>
<email>even.rouault@spatialys.com</email>
</author>
<published>2020-02-12T14:55:16Z</published>
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<id>urn:sha1:84f3bebbff515f2b00ccf0c817930ebb10b91760</id>
<content type='text'>
Add -IMF switch to opj_compress as well
</content>
</entry>
<entry>
<title>openjpeg.h: fix values of OPJ_PROFILE_IMF_ constants</title>
<updated>2020-02-12T14:55:02Z</updated>
<author>
<name>Even Rouault</name>
<email>even.rouault@spatialys.com</email>
</author>
<published>2020-02-12T14:55:02Z</published>
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<id>urn:sha1:fffe32adcb9f41a00805f4120012be9625ba450a</id>
<content type='text'>
</content>
</entry>
<entry>
<title>opj_tcd_init_tile(): avoid integer overflow</title>
<updated>2020-01-29T23:59:57Z</updated>
<author>
<name>Even Rouault</name>
<email>even.rouault@spatialys.com</email>
</author>
<published>2020-01-29T23:59:57Z</published>
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<id>urn:sha1:05f9b91e60debda0e83977e5e63b2e66486f7074</id>
<content type='text'>
That could lead to later assertion failures.

Fixes #1231 / CVE-2020-8112
</content>
</entry>
<entry>
<title>opj_j2k_update_image_dimensions(): reject images whose coordinates are beyond INT_MAX (fixes #1228)</title>
<updated>2020-01-11T00:51:58Z</updated>
<author>
<name>Even Rouault</name>
<email>even.rouault@spatialys.com</email>
</author>
<published>2020-01-11T00:51:19Z</published>
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<id>urn:sha1:024b8407392cb0b82b04b58ed256094ed5799e04</id>
<content type='text'>
</content>
</entry>
<entry>
<title>pi.c: avoid integer overflow, resulting in later invalid access to memory in opj_t2_decode_packets(). Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=18979</title>
<updated>2019-11-17T00:18:26Z</updated>
<author>
<name>Even Rouault</name>
<email>even.rouault@spatialys.com</email>
</author>
<published>2019-11-17T00:18:26Z</published>
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<id>urn:sha1:4cb1f663049aab96e122d1ff16f601d0cc0be976</id>
<content type='text'>
</content>
</entry>
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