[FFmpeg-trac] #10121(avcodec:new): jpeg2000 decoder fails on conformance codestream p0_10.j2k

FFmpeg trac at avcodec.org
Sun Dec 25 23:38:59 EET 2022

#10121: jpeg2000 decoder fails on conformance codestream p0_10.j2k
             Reporter:  Pierre-      |                     Type:  defect
  Anthony Lemieux                    |
               Status:  new          |                 Priority:  normal
            Component:  avcodec      |                  Version:
                                     |  unspecified
             Keywords:  jpeg2000     |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
 Summary of the bug:
 The jpeg2000 decoder fails to accurately decode the p0_10.j2k image from
 the [https://gitlab.com/wg1/htj2k-codestreams/-/tree/master/ ISO/ITU
 conformance codestream set]:
 * the error message `bpno became invalid` is emitted
 * there are significant errors in the lower left quadrant when compared to
 the reference image `c1p0_10-{1,2,3}.pgx`

 A description of the codestream is available at `p0_10syntax.txt`

 How to reproduce:
 ffmpeg -flags +bitexact -i p0_10.j2k p0_10.png
 ffmpeg version eef763c7057a7f5f4b7dae7855d07b2a6da8b537
 Patches should be submitted to the ffmpeg-devel mailing list and not this
 bug tracker.
Ticket URL: <https://trac.ffmpeg.org/ticket/10121>
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