This commit does for AVInputFormat what commit
59c9dc82f4 did for AVOutputFormat:
It adds a new type FFInputFormat, moves all the internals
of AVInputFormat to it and adds a now reduced AVInputFormat
as first member.
This does not affect/improve extensibility of both public
or private fields for demuxers (it is still a mess due to lavd).
This is possible since 50f34172e0
(which removed the last usage of an internal field of AVInputFormat
in fftools).
(Hint: tools/probetest.c accesses the internals of FFInputFormat
as well, but given that it is a testing tool this is not considered
a problem.)
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This is possible now that the next-API is gone.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Signed-off-by: James Almer <jamrial@gmail.com>
Causes a divide-by-zero in the rare case where:
- the file has an audio stream,
- the first audio frame isn't within the first BRP_BASF_LOOKAHEAD frames,
- an audio frame is encountered later, and
- its chunk header (except num_blocks) contains all zeros
(matching the uninitialised structure in the context)
The decoder will discard any garbage data, so the check isn't really needed.
Fixes: division by 0
Fixes: 26667/clusterfuzz-testcase-minimized-ffmpeg_dem_ARGO_BRP_fuzzer-5645146928185344.fuzz
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Zane van Iperen <zane@zanevaniperen.com>
It seems that in files where the BASF block isn't first, v1.1 ASF streams are
allowed to be non-22050. Either this format is really inconsistent, or
FX Fighter and Croc just ignored the sample rate field, requiring the v1.1
restriction in the first place.
This bumps the version to 1.2 in these streams so they're not "corrected".
Found in Alien Odyssey games files in:
./GRAPHICS/COMMBUNK/{{COMADD1,COMM2_{1,2,3E},COMM3_{2,3,4,5,6}},FADE{1,2}}.BRP
Signed-off-by: Zane van Iperen <zane@zanevaniperen.com>
Turns out that there are files with multiple (reasonably-sized) BASF
blocks. Some of the files just have particularly large frames (~10s).
Signed-off-by: Zane van Iperen <zane@zanevaniperen.com>
Used in FMVs for FX Fighter and Croc. Supports BVID and BASF streams,
requests samples for anything else.
Due to the way BASF streams are contained in the file, only one is
supported. I have yet to see a BRP file with multiple.
Signed-off-by: Zane van Iperen <zane@zanevaniperen.com>
