[FFmpeg-devel] JPEG2000 multiple SOC and SIZ

[Michael Niedermayer]

On Sun, Jun 30, 2019 at 05:04:38PM +0500, Anton Novikov wrote:
> When I truncate the packet at next SOC, I get:
> [jpeg2000 @ 0x55ce0298aa40] SIZ
> [jpeg2000 @ 0x55ce0298aa40] SIZ width=2056 height=2168 tile_width=2056
> tile_height=2168 tile_offset_x=0 tile_offset_y=0 xtiles=1 ytiles=1
> [jpeg2000 @ 0x55ce0298aa40] SIZ Rsiz=0x8040 2056 2168
> [jpeg2000 @ 0x55ce0298aa40] POC
> [jpeg2000 @ 0x55ce0298aa40] unsupported marker 0xFF79 at pos 0x70
> [jpeg2000 @ 0x55ce0298aa40] COD
> [jpeg2000 @ 0x55ce0298aa40] extra cblk styles E
> [jpeg2000 @ 0x55ce0298aa40] QCD
> [jpeg2000 @ 0x55ce0298aa40] SOT
>     Last message repeated 3 times
> [jpeg2000 @ 0x55ce0298aa40] Psot 1451180 too big
> [jpeg2000 @ 0x55ce0298aa40] error during processing marker segment ff90
> 
> Moreover, in both SIZes, tile offsets are 0, I can't get the idea how the
> file should be handled correctly.
> file: https://www.file-up.org/niuxrl31dyij
> fmpeg commits are attached
> 
> вс, 30 июн. 2019 г. в 15:17, Paul B Mahol <onemda at gmail.com>:
> 
> > On 6/30/19, Anton Novikov <random.plant at gmail.com> wrote:
> > > Hi everyone,
> > > I'm reversing the recent version of r3d file format, and have
> > encountered a
> > > JPEG2000-related thing.
> > > I've got a memory dump of something that seems to be JPEG2000, and
> > modified
> > > ffmpeg to consume it. The log follows:
> > > [r3d @ 0x558d304077c0] test
> > > [r3d @ 0x558d304077c0] error reading end atom
> > > Input #0, r3d, from '/home/anek/src/red/frame2.without0.r3d':
> > >   Duration: N/A, bitrate: N/A
> > >     Stream #0:0: Video: jpeg2000, bayer_rggb16le, 8192x4320, 24 fps, 24
> > > tbr, 134286336 tbn, 134286336 tbc
> > >     Metadata:
> > >       filename        : ?
> > > File 'frame.jpg' already exists. Overwrite ? [y/N] y
> > > Stream mapping:
> > >   Stream #0:0 -> #0:0 (jpeg2000 (native) -> mjpeg (native))
> > > Press [q] to stop, [?] for help
> > > Truncating packet of size 9496960 to 7595371
> > > /home/anek/src/red/frame2.without0.r3d: corrupt input packet in stream 0
> > > /home/anek/src/red/frame2.without0.r3d: Operation not permitted
> > > [jpeg2000 @ 0x558d3041c280] SIZ
> > > [jpeg2000 @ 0x558d3041c280] SIZ Rsiz=0x8040 2056 2168
> > > [jpeg2000 @ 0x558d3041c280] POC
> > > [jpeg2000 @ 0x558d3041c280] unsupported marker 0xFF79 at pos 0x70
> > > [jpeg2000 @ 0x558d3041c280] COD
> > > [jpeg2000 @ 0x558d3041c280] extra cblk styles E
> > > [jpeg2000 @ 0x558d3041c280] QCD
> > > [jpeg2000 @ 0x558d3041c280] SOT
> > >     Last message repeated 3 times
> > > [jpeg2000 @ 0x558d3041c280] Duplicate SOC at 3821997=0x3A51AD
> > > [jpeg2000 @ 0x558d3041c280] SIZ
> > > [jpeg2000 @ 0x558d3041c280] SIZ Rsiz=0x8040 2056 2168
> > > [jpeg2000 @ 0x558d3041c280] POC
> > > [jpeg2000 @ 0x558d3041c280] unsupported marker 0xFF79 at pos 0x3A5203
> > > [jpeg2000 @ 0x558d3041c280] COD
> > > [jpeg2000 @ 0x558d3041c280] extra cblk styles E
> > > [jpeg2000 @ 0x558d3041c280] QCD
> > > [jpeg2000 @ 0x558d3041c280] SOT
> > >     Last message repeated 3 times
> > > [jpeg2000 @ 0x558d3041c280] Progression order RPCL
> > >     Last message repeated 3 times
> > > [swscaler @ 0x558d30425900] deprecated pixel format used, make sure you
> > did
> > > set range correctly
> > > [mjpeg @ 0x558d3040e780] removing common factors from framerate
> > > Output #0, image2, to 'frame.jpg':
> > >   Metadata:
> > >     encoder         : Lavf58.27.103
> > >     Stream #0:0: Video: mjpeg, yuvj444p(pc), 2056x2168, q=2-31, 200 kb/s,
> > > 24 fps, 24 tbn, 24 tbc
> > >     Metadata:
> > >       filename        : ?
> > >       encoder         : Lavc58.52.102 mjpeg
> > >     Side data:
> > >       cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: -1
> > > [image2 @ 0x558d3040abc0] Application provided invalid, non monotonically
> > > increasing dts to muxer in stream 0: 101000 >= 0
> > > /home/anek/src/red/frame2.without0.r3d: Operation not permitted
> > > frame=    1 fps=0.4 q=2.9 Lsize=N/A time=00:00:00.00 bitrate=N/A speed=
> > > 0x
> > > video:96kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
> > > muxing overhead: unknown
> > >
> > > picture dimensions are 8192x4320, but in JPEG2000 bytestream there are 2
> > > SOC and SIZ markers with SIZ mentioning 2056x2168. The image is decoded,
> > > but colors and area are wrong. What can I do?
> >
> > Make sure it uses tiles (each jpeg2000 is special tile) and that your
> > packet is trimmed.
> > _______________________________________________
> > ffmpeg-devel mailing list
> > ffmpeg-devel at ffmpeg.org
> > https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
> >
> > To unsubscribe, visit link above, or email
> > ffmpeg-devel-request at ffmpeg.org with subject "unsubscribe".

>  jpeg2000dec.c |   43 ++++++++++++++++++++++++++++++++++---------
>  1 file changed, 34 insertions(+), 9 deletions(-)
> d9726772b07866243dd21c966649459bb8cbcfed  0002-jpeg2000-decoding-dbginfo.patch
> From ce21789b0da6e7f16c21ea33dcf67586b32630bd Mon Sep 17 00:00:00 2001

> From: Anek <anek at archlinuxi>

Make sure the author is containing your full name unless you want to
use a pseudonym. (It cannot be changed once anything of this is pushed)
and some (samm and trivial) parts of the patches could be split out and pushed

Thanks

[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Old school: Use the lowest level language in which you can solve the problem
            conveniently.
New school: Use the highest level language in which the latest supercomputer
            can solve the problem without the user falling asleep waiting.
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