FFmpeg

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Author	SHA1	Message	Date
Marton Balint	7ceb9e6b11	avfilter/formats: allow unknown channel layouts by default Since the default in the libav fork is to only allow known layouts, making unknown layouts allowed by default here can be a security risk for filters directly merged from libav. However, usually it is simple to detect such cases, use of av_get_channel_layout_nb_channels is a good indicator, so I suggest we change this regardless. See http://ffmpeg.org/pipermail/ffmpeg-devel/2016-November/203204.html. This patch indirectly adds unknown channel layout support for filters where query_formats is not specified: abench afifo ainterleave anullsink apad aperms arealtime aselect asendcmd asetnsamples asetpts asettb ashowinfo azmq It introduces a query_formats callback for the asyncts filter, which only supports known channel layouts since it is using libavresample. And it removes .query_formats callback from filters where it was only there to support unknown layouts, as this is now the default: aloop ametadata anull asidedata asplit atrim Acked-by: Nicolas George <george@nsup.org> Signed-off-by: Marton Balint <cus@passwd.hu>	8 years ago
Marton Balint	7845c13881	lavfi/sidedata: add filter for manipulating frame side data This is a similar filter to f_metadata, only it works on side data. Since adding side data from a user provided arbitrary binary string is unsafe, because current code assumes that a side data of a certain kind has the proper size, this filter only implements selection and deletion. Also, no value matching support is implemented yet, because there is no uniform way to specify a side data textually. Signed-off-by: Marton Balint <cus@passwd.hu>	8 years ago

Author

SHA1

Message

Date

Marton Balint

7ceb9e6b11

avfilter/formats: allow unknown channel layouts by default

Since the default in the libav fork is to only allow known layouts, making
unknown layouts allowed by default here can be a security risk for filters
directly merged from libav. However, usually it is simple to detect such cases,
use of av_get_channel_layout_nb_channels is a good indicator, so I suggest we
change this regardless.

See http://ffmpeg.org/pipermail/ffmpeg-devel/2016-November/203204.html.

This patch indirectly adds unknown channel layout support for filters where
query_formats is not specified:

abench
afifo
ainterleave
anullsink
apad
aperms
arealtime
aselect
asendcmd
asetnsamples
asetpts
asettb
ashowinfo
azmq

It introduces a query_formats callback for the asyncts filter, which only
supports known channel layouts since it is using libavresample.

And it removes .query_formats callback from filters where it was only there to
support unknown layouts, as this is now the default:

aloop
ametadata
anull
asidedata
asplit
atrim

Acked-by: Nicolas George <george@nsup.org>
Signed-off-by: Marton Balint <cus@passwd.hu>

8 years ago

Marton Balint

7845c13881

lavfi/sidedata: add filter for manipulating frame side data

This is a similar filter to f_metadata, only it works on side data. Since
adding side data from a user provided arbitrary binary string is unsafe,
because current code assumes that a side data of a certain kind has the proper
size, this filter only implements selection and deletion. Also, no value
matching support is implemented yet, because there is no uniform way to specify
a side data textually.

Signed-off-by: Marton Balint <cus@passwd.hu>

8 years ago

2 Commits (20ea8bf9390b3a68e43bbe666154aa8b5150cad3)