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14 Commits

Author SHA1 Message Date
Michael Niedermayer
88974483a4 avutil/timecode: Avoid fps overflow 
Fixes: Integer overflow and division by 0
Fixes: poc-202102-div.mov

Found-by: 1vanChen of NSFOCUS Security Team
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit c94875471e3ba3dc396c6919ff3ec9b14539cd71)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2021-10-09 22:02:20 +02:00
Michael Niedermayer
090893695e avutil/timecode: Avoid undefined behavior with large framenum 
Fixes: signed integer overflow: 2147462079 + 2149596 cannot be represented in type 'int'
Fixes: 27565/clusterfuzz-testcase-minimized-ffmpeg_DEMUXER_fuzzer-5091972813160448

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 1b1905739638c22b476c99c679b41f29fa00bf07)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2021-10-09 22:02:20 +02:00
Michael Niedermayer
b46dcd5209 avutil/timecode: Fix fps check 
The fps variable is explicitly set to -1 in case of some errors, the check must
thus be signed or the code setting it needs to use 0 as error code
the type of the field could be changed as well but its in an installed header

Fixes: integer overflow
Fixes: 9982cc157b1ea90429435640a989122f/asan_generic_3ad004a_3799_22cf198d9cd09928e2d9ad250474fa58.mov

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2015-12-03 04:09:48 +01:00
Vittorio Giovara
63ea8e0610 timecode: Support HFR values 2015-10-26 15:05:26 +01:00
Vittorio Giovara
8c22148220 timecode: Do not fail for non-standard framerates 
Instead just warn, and use the parse fps normally.

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
 2015-10-26 15:05:05 +01:00
Thierry Foucu
12875df324 Timecode: Support 48fps 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-05-28 03:25:41 +02:00
Jason
77b740ac0a lavu/timecode: fix time code calculation for 60000/1001 drop frame 
Reviewed-by: Matthieu Bouron <matthieu.bouron@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-01-24 21:06:24 +01:00
Jason
a717fa84ed lavu/timecode: Allow drop frame mode for 60000/1001 fps 
Reviewed-by: Matthieu Bouron <matthieu.bouron@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-01-24 21:06:24 +01:00
Stefano Sabatini
74a50e75a8 lavu: drop disabled FF_API_OLD_TC_ADJUST_FRAMENUM code 2012-11-04 18:10:39 +01:00
Clément Bœsch
4b365b0868 lavu/timecode: add av_timecode_check_frame_rate(). 2012-08-08 09:11:26 +02:00
Clément Bœsch
1f68be4764 timecode: show frame rate when invalid. 2012-08-01 17:36:37 +02:00
Matthieu Bouron
789f8cb03a avutil: support 50 and 60 frame rates in timecode api 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2012-07-27 13:41:58 +02:00
Clément Bœsch
9477fa094b lavu/timecode: use @see for URL in doxygen. 2012-02-03 00:56:27 +01:00
Clément Bœsch
0eaa123b34 lavu: add public timecode API. 2012-02-02 14:30:28 +01:00