[FFmpeg-trac] #3687(avcodec:new): bmp parser is more strict than the bmp decoder

[FFmpeg]

#3687: bmp parser is more strict than the bmp decoder
------------------------------------+-----------------------------------
             Reporter:  cehoyos     |                    Owner:
                 Type:  defect      |                   Status:  new
             Priority:  normal      |                Component:  avcodec
              Version:  git-master  |               Resolution:
             Keywords:  bmp         |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |
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Comment (by cehoyos):

 This is now simpler to reproduce:
 {{{
 $ cp 8bpp.bmp bmpimage
 }}}
 {{{
 $ ffmpeg -i bmpimage out.png
 ffmpeg version N-64397-g5c65aed Copyright (c) 2000-2014 the FFmpeg
 developers
   built on Jul  4 2014 01:47:20 with gcc 4.7 (SUSE Linux)
   configuration: --enable-gpl
   libavutil      52. 90.101 / 52. 90.101
   libavcodec     55. 68.100 / 55. 68.100
   libavformat    55. 45.100 / 55. 45.100
   libavdevice    55. 13.101 / 55. 13.101
   libavfilter     4. 10.100 /  4. 10.100
   libswscale      2.  6.100 /  2.  6.100
   libswresample   0. 19.100 /  0. 19.100
   libpostproc    52.  3.100 / 52.  3.100
 [bmp @ 0x1f3ba80] not enough data (785408 < 786432)
 Input #0, bmp_pipe, from 'bmpimage':
   Duration: N/A, bitrate: N/A
     Stream #0:0: Video: bmp, pal8, 1024x768, 25 tbr, 25 tbn, 25 tbc
 [image2 @ 0x1f3c9c0] Using AVStream.codec.time_base as a timebase hint to
 the muxer is deprecated. Set AVStream.time_base instead.
 Output #0, image2, to 'out.png':
   Metadata:
     encoder         : Lavf55.45.100
     Stream #0:0: Video: png, pal8, 1024x768, q=2-31, 200 kb/s, 25 fps, 25
 tbn, 25 tbc
     Metadata:
       encoder         : Lavc55.68.100 png
 Stream mapping:
   Stream #0:0 -> #0:0 (bmp (native) -> png (native))
 Press [q] to stop, [?] for help
 [bmp @ 0x1f3c520] not enough data (785408 < 786432)
 Error while decoding stream #0:0: Invalid data found when processing input
 bmpimage: Input/output error
 frame=    0 fps=0.0 q=0.0 Lsize=N/A time=00:00:00.00 bitrate=N/A
 video:0kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: unknown
 Output file is empty, nothing was encoded (check -ss / -t / -frames
 parameters if used)
 Conversion failed!
 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/3687#comment:2>
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