Commit graph

8 commits

Author SHA1 Message Date
Jun Zhao
bfbf0f4e82 lavc/vvc_parser: small cleanup for style
small cleanup for style, redundant semicolons, goto labels,
in FFmpeg, we put goto labels at brace level.

Signed-off-by: Jun Zhao <barryjzhao@tencent.com>
2024-03-23 22:49:29 +08:00
Michael Niedermayer
f1954ff8d1
avcodec/vvc_parser: Avoid undefined overflow in POC computation
The comments to the function say that it does not implement the spec and
instead follows VTM.
This patch is quite likely not the right solution and more intended to show
the issue to people knowing the specific part of VTM ...

Fixes: signed integer overflow: 2147483392 + 256 cannot be represented in type 'int'
Fixes: 60505/clusterfuzz-testcase-minimized-ffmpeg_DEMUXER_fuzzer-6216675924770816

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2023-09-22 23:47:40 +02:00
James Almer
995976750a avcodec/cbs_h2645: fix parsing and storing Picture Header references in the context
Signed-off-by: James Almer <jamrial@gmail.com>
2023-06-30 08:26:38 -03:00
Andreas Rheinhardt
b7158377c9 avcodec/vvc_parser: Mark close function as av_cold
Reviewed-by: James Almer <jamrial@gmail.com>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2023-06-30 00:48:46 +02:00
Andreas Rheinhardt
0009cbe11d avcodec/vvc_parser: Don't store state unnecessarily
VVCParserContext.au_info is only used once (and in a read-only manner);
but this happens immediately after au_info has been completely
overwritten. Therefore one can just the src structure used to overwrite
au_info directly and remove au_info.

This also means that the whole referencing and unreferncing of au_info
(which duplicates AVBufferRefs CodedBitstreamH266Context and is
therefore of dubious gain) can be removed, as can the AVBufferRef*
contained in PuInfo; this also removes a certain uglyness: Sometimes
these AVBufferRef* were ownership pointers and sometimes not.

Reviewed-by: James Almer <jamrial@gmail.com>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2023-06-30 00:00:57 +02:00
Andreas Rheinhardt
6caf5642c8 avcodec/vvc_parser: Remove unnecessary headers
Reviewed-by: James Almer <jamrial@gmail.com>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2023-06-29 23:50:29 +02:00
Andreas Rheinhardt
22c47b10b2 avcodec/vvc_parser: Constify parser
The discrepancy between the definition and the declaration
in parsers.c is actually UB.

Reviewed-by: James Almer <jamrial@gmail.com>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2023-06-29 20:22:27 +02:00
Nuo Mi
b5aefb6e70 avcodec: add bitstream parser for H266/VVC
Add nal parser ff_vvc_parser to parse vvc elementary bitstreams.

Co-authored-by: Thomas Siedel <thomas.ff@spin-digital.com>
Co-authored-by: James Almer <jamrial@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>
2023-06-29 14:12:50 -03:00