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Commit Graph

8 Commits

Author SHA1 Message Date
Marton Balint
e3a9630982 avcodec/mpeg_er: fix clearing chroma blocks for 422 and 444
Fixes ticket #7494.

Signed-off-by: Marton Balint <cus@passwd.hu>
2018-11-19 22:11:43 +01:00
Michael Niedermayer
127a362630 avcodec/mpeg_er: Clear mcsel in mpeg_er_decode_mb()
Fixes out of array read
Should fix: 3516/clusterfuzz-testcase-minimized-4608518562775040 (not reprodoceable)

Found-by: Insu Yun, Georgia Tech.
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2017-10-10 23:58:40 +02:00
Michael Niedermayer
f670c13f13 avcodec: Rename ff_mpv_decode_mb() to ff_mpv_reconstruct_mb
The new name more accuratly describes what the function does

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2017-06-19 17:54:40 +02:00
Michael Niedermayer
d9d9fd9446 avcodec/error_resilience: Optimize motion recovery code by using blcok lists
This makes the code 7 times faster with the testcase from libfuzzer
and should reduce the amount of timeouts we hit in automated fuzzing.
(for example 438/fuzz-2-ffmpeg_VIDEO_AV_CODEC_ID_RV40_fuzzer)

The code is also faster with more realistic input though the difference
is small here as that is far from the worst cases the fuzzers pick out

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2017-01-22 21:39:43 +01:00
Michael Niedermayer
58f63670e1 Merge commit '8b5007a31b8d1ddbe3661bf45a732336450b7d25'
* commit '8b5007a31b8d1ddbe3661bf45a732336450b7d25':
  mpegvideo: Move ER functions to a separate file

Conflicts:
	libavcodec/mpegvideo.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2015-06-12 20:47:14 +02:00
Vittorio Giovara
8b5007a31b mpegvideo: Move ER functions to a separate file 2015-06-12 11:57:26 +01:00
Michael Niedermayer
56afbe8dbc Merge commit '7b9ef8d701c319c26f7d0664fe977e176764c74e'
* commit '7b9ef8d701c319c26f7d0664fe977e176764c74e':
  mpeg: Split error resilience bits off into a separate file

Conflicts:
	configure
	libavcodec/Makefile
	libavcodec/mpegvideo.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2014-06-23 03:48:30 +02:00
Diego Biurrun
7b9ef8d701 mpeg: Split error resilience bits off into a separate file 2014-06-22 17:36:37 -07:00