jpeg2000: fix decoding of precints 2

[ami_stuff]

C:\>kdu_compress.exe -i test.bmp -o pred2.jp2 Creversible=yes Stiles={711,393} Cprecincts={4,512}
Note:
    The default rate control policy for colour images employs visual (CSF)
    weighting factors.  To minimize MSE instead, specify `-no_weights'.
Note:
    If you want quality scalability, you should generate multiple layers with
    `-rate' or by using the "Clayers" option.

Generated 6 tile-part(s) for a total of 6 tile(s).
Code-stream bytes (excluding any file format) = 860,913 = 9.204537 bits/pel.
Layer bit-rates (possibly inexact if tiles are divided across tile-parts):
        9.204537
Layer thresholds:
        0
Processed using the multi-threaded environment, with
    8 parallel threads of execution

C:\>ffmpegm -i pred2.jp2 out.bmp
ffmpeg version 2.6.git Copyright (c) 2000-2015 the FFmpeg developers
  built with gcc 4.6.2 (GCC)
  configuration: --disable-pthreads --enable-gpl --disable-ffprobe
  libavutil      54. 27.100 / 54. 27.100
  libavcodec     56. 41.100 / 56. 41.100
  libavformat    56. 37.100 / 56. 37.100
  libavdevice    56.  4.100 / 56.  4.100
  libavfilter     5. 17.100 /  5. 17.100
  libswscale      3.  1.101 /  3.  1.101
  libswresample   1.  2.100 /  1.  2.100
  libpostproc    53.  3.100 / 53.  3.100
[jpeg2000 @ 0229f680] Warning: not compiled with thread support, using thread em
ulation
[jpeg2000 @ 0229f680] End mismatch 5
[jpeg2000 @ 0229f680] End mismatch 39
[jpeg2000 @ 0229f680] End mismatch 37
[jpeg2000 @ 0229f680] End mismatch 41
[jpeg2000 @ 0229f680] End mismatch 2
    Last message repeated 1 times
[jpeg2000 @ 0229f680] End mismatch 3
[jpeg2000 @ 0229f680] End mismatch 39
[jpeg2000 @ 0229f680] End mismatch 14
[jpeg2000 @ 0229f680] End mismatch 1
[jpeg2000 @ 0229f680] End mismatch 11
[jpeg2000 @ 0229f680] End mismatch 5
[jpeg2000 @ 0229f680] End mismatch 39
[jpeg2000 @ 0229f680] End mismatch 26
[jpeg2000 @ 0229f680] End mismatch 24
[jpeg2000 @ 0229f680] End mismatch 30
[jpeg2000 @ 0229f680] End mismatch 51
[jpeg2000 @ 0229f680] End mismatch 31
[jpeg2000 @ 0229f680] End mismatch 4
[jpeg2000 @ 0229f680] End mismatch 8
[jpeg2000 @ 0229f680] End mismatch 9
[jpeg2000 @ 0229f680] End mismatch 28
[jpeg2000 @ 0229f680] End mismatch 29
[jpeg2000 @ 0229f680] End mismatch 2320
[jpeg2000 @ 0229f680] End mismatch 11
[jpeg2000 @ 0229f680] End mismatch 14
[jpeg2000 @ 0229f680] End mismatch 2
[jpeg2000 @ 0229f680] End mismatch 1
[jpeg2000 @ 0229f680] End mismatch 13
[jpeg2000 @ 0229f680] End mismatch 1
[jpeg2000 @ 0229f680] End mismatch 39
[jpeg2000 @ 0229f680] End mismatch 35
[jpeg2000 @ 0229f680] End mismatch 3
[jpeg2000 @ 0229f680] End mismatch 21
[jpeg2000 @ 0229f680] End mismatch 1
[jpeg2000 @ 0229f680] End mismatch 5
[jpeg2000 @ 0229f680] End mismatch 3
[jpeg2000 @ 0229f680] End mismatch 25
[jpeg2000 @ 0229f680] End mismatch 6
[jpeg2000 @ 0229f680] End mismatch 25
Input #0, j2k_pipe, from 'pred2.jp2':
  Duration: N/A, bitrate: N/A
    Stream #0:0: Video: jpeg2000 (JPEG 2000 codestream restriction 0), rgb24, 99
9x749, 25 tbr, 25 tbn, 25 tbc
[bmp @ 03138c00] Warning: not compiled with thread support, using thread emulati
on
[jpeg2000 @ 08c6d020] Warning: not compiled with thread support, using thread em
ulation
Output #0, image2, to 'out.bmp':
  Metadata:
    encoder         : Lavf56.37.100
    Stream #0:0: Video: bmp, bgr24, 999x749, q=2-31, 200 kb/s, 25 fps, 25 tbn, 2
5 tbc
    Metadata:
      encoder         : Lavc56.41.100 bmp
Stream mapping:
  Stream #0:0 -> #0:0 (jpeg2000 (native) -> bmp (native))
Press [q] to stop, [?] for help
[jpeg2000 @ 08c6d020] End mismatch 5
[jpeg2000 @ 08c6d020] End mismatch 39
[jpeg2000 @ 08c6d020] End mismatch 37
[jpeg2000 @ 08c6d020] End mismatch 41
[jpeg2000 @ 08c6d020] End mismatch 2
    Last message repeated 1 times
[jpeg2000 @ 08c6d020] End mismatch 3
[jpeg2000 @ 08c6d020] End mismatch 39
[jpeg2000 @ 08c6d020] End mismatch 14
[jpeg2000 @ 08c6d020] End mismatch 1
[jpeg2000 @ 08c6d020] End mismatch 11
[jpeg2000 @ 08c6d020] End mismatch 5
[jpeg2000 @ 08c6d020] End mismatch 39
[jpeg2000 @ 08c6d020] End mismatch 26
[jpeg2000 @ 08c6d020] End mismatch 24
[jpeg2000 @ 08c6d020] End mismatch 30
[jpeg2000 @ 08c6d020] End mismatch 51
[jpeg2000 @ 08c6d020] End mismatch 31
[jpeg2000 @ 08c6d020] End mismatch 4
[jpeg2000 @ 08c6d020] End mismatch 8
[jpeg2000 @ 08c6d020] End mismatch 9
[jpeg2000 @ 08c6d020] End mismatch 28
[jpeg2000 @ 08c6d020] End mismatch 29
[jpeg2000 @ 08c6d020] End mismatch 2320
[jpeg2000 @ 08c6d020] End mismatch 11
[jpeg2000 @ 08c6d020] End mismatch 14
[jpeg2000 @ 08c6d020] End mismatch 2
[jpeg2000 @ 08c6d020] End mismatch 1
[jpeg2000 @ 08c6d020] End mismatch 13
[jpeg2000 @ 08c6d020] End mismatch 1
[jpeg2000 @ 08c6d020] End mismatch 39
[jpeg2000 @ 08c6d020] End mismatch 35
[jpeg2000 @ 08c6d020] End mismatch 3
[jpeg2000 @ 08c6d020] End mismatch 21
[jpeg2000 @ 08c6d020] End mismatch 1
[jpeg2000 @ 08c6d020] End mismatch 5
[jpeg2000 @ 08c6d020] End mismatch 3
[jpeg2000 @ 08c6d020] End mismatch 25
[jpeg2000 @ 08c6d020] End mismatch 6
[jpeg2000 @ 08c6d020] End mismatch 25
frame=    1 fps=0.0 q=0.0 Lsize=N/A time=00:00:00.04 bitrate=N/A
video:2194kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing
overhead: unknown

[ami_stuff]

one more sample

C:\>kdu_compress.exe -i test.bmp -o prec3.jp2 Creversible=yes Cprecincts={128,128} Stiles={71,393}
Note:
    The default rate control policy for colour images employs visual (CSF)
    weighting factors.  To minimize MSE instead, specify `-no_weights'.
Note:
    If you want quality scalability, you should generate multiple layers with
    `-rate' or by using the "Clayers" option.

Generated 33 tile-part(s) for a total of 33 tile(s).
Code-stream bytes (excluding any file format) = 758,998 = 8.114903 bits/pel.
Layer bit-rates (possibly inexact if tiles are divided across tile-parts):
        8.114903
Layer thresholds:
        0
Processed using the multi-threaded environment, with
    8 parallel threads of execution

[ami_stuff]

the problem does not happen with -vlowres 1 if it helps with anything

[Carl Eugen Hoyos]

Fixed by Gautam Ramakrishnan in 995d937827dda228e68eeffca10feeea32463cf7