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9 Commits

Author SHA1 Message Date
Michael Niedermayer
51978aefe8 avcodec/dirac_arith: Treat overread as error 
Fixes: Timeout
Fixes: 11663/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_DIRAC_fuzzer-5636791864918016

Before:Executed clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_DIRAC_fuzzer-5636791864918016 in 26006 ms
After: Executed clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_DIRAC_fuzzer-5636791864918016 in 106 ms

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2019-01-16 01:29:18 +01:00
Michael Niedermayer
6ed3d0e01c avcodec/diracdec: Propagate errors from dirac_get_arith_uint() 
Testcase: 11663/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_DIRAC_fuzzer-5636791864918016

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2019-01-16 01:29:18 +01:00
Ronald S. Bultje
5ba8c3a0ed dirac: make initialization of arithmetic coder tables threadsafe. 2017-03-28 11:21:27 -04:00
Carl Eugen Hoyos
ea5423a017 lavc/dirac_arith: Only compile x86 asm if ARCH_X86 is set. 
Fixes ticket #3544.
 2014-12-02 11:36:48 +01:00
Michael Niedermayer
39680cacee avcodec/dirac_arith: fix integer overflow 
Fixes: asan_heap-oob_1078676_9_008.drc
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-10-28 02:15:40 +01:00
Anthoine Bourgeois
d8ab7f31dd avcodec/dirac_arith: Fix build with PIC and stack-check options 
Fixes Ticket3540

The function dirac_get_arith_bit in libavcodec/dirac_arith.h can't be
built with PIC and check-stack because the asm code needs 6 registers
and PIC and check-stack options take 1 each and x86 is quite limited
in this area.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-04-09 19:41:48 +02:00
Derek Buitenhuis
5c95a93411 dirac_arith: Fix unprotected inline asm 
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
 2012-09-17 15:00:40 -04:00
Jordi Ortiz
49aa397414 Dirac: More formating 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2011-10-30 21:50:17 +01:00
multiple authors
5d50fcc549 DIRAC Decoder stable version, MMX support removed. 
Look for MMX_DISABLED to find the disabled functions.

Authors of this code are Marco Gerards <marco@gnu.org> and David Conrad <lessen42@gmail.com>
With changes from Jordi Ortiz <nenjordi@gmail.com>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2011-10-30 21:50:08 +01:00