- 06 Nov, 2016 1 commit
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Andreas Cadhalpun authored
A negative sample rate doesn't make sense and triggers assertions in av_rescale_rnd. Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
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- 23 Feb, 2016 1 commit
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Anton Khirnov authored
Currently, AVStream contains an embedded AVCodecContext instance, which is used by demuxers to export stream parameters to the caller and by muxers to receive stream parameters from the caller. It is also used internally as the codec context that is passed to parsers. In addition, it is also widely used by the callers as the decoding (when demuxer) or encoding (when muxing) context, though this has been officially discouraged since Libav 11. There are multiple important problems with this approach: - the fields in AVCodecContext are in general one of * stream parameters * codec options * codec state However, it's not clear which ones are which. It is consequently unclear which fields are a demuxer allowed to set or a muxer allowed to read. This leads to erratic behaviour depending on whether decoding or encoding is being performed or not (and whether it uses the AVStream embedded codec context). - various synchronization issues arising from the fact that the same context is used by several different APIs (muxers/demuxers, parsers, bitstream filters and encoders/decoders) simultaneously, with there being no clear rules for who can modify what and the different processes being typically delayed with respect to each other. - avformat_find_stream_info() making it necessary to support opening and closing a single codec context multiple times, thus complicating the semantics of freeing various allocated objects in the codec context. Those problems are resolved by replacing the AVStream embedded codec context with a newly added AVCodecParameters instance, which stores only the stream parameters exported by the demuxers or read by the muxers.
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- 20 Feb, 2015 1 commit
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Michael Niedermayer authored
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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- 28 Oct, 2014 2 commits
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Michael Niedermayer authored
This check is redundant with the previous commit but it provides better error messages and feedback while the previous commit ensures that var_read_string() doesnt return uninitialized arrays if it itself is feeded with an invalid size possibly through a different future codepath. Fixes: asan_heap-oob_49b1e5_12_011.movie Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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Michael Niedermayer authored
Fixes out of array read Fixes: asan_heap-oob_49b1e5_12_011.movie Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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- 19 Apr, 2014 1 commit
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Peter Ross authored
Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
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- 15 Mar, 2013 1 commit
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Paul B Mahol authored
Signed-off-by: Paul B Mahol <onemda@gmail.com>
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- 27 Jan, 2013 2 commits
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Michael Niedermayer authored
Prevent null pointer dereference Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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Michael Niedermayer authored
fixes out of array reads Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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- 22 Jan, 2013 3 commits
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Michael Niedermayer authored
Fixes division by 0 Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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Michael Niedermayer authored
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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Michael Niedermayer authored
Fixes division by 0 Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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- 24 Dec, 2012 1 commit
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Michael Niedermayer authored
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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- 17 Dec, 2012 1 commit
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Peter Ross authored
Signed-off-by: Peter Ross <pross@xvid.org>
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