[FFmpeg-devel] [PATCH 4/7] avformat/vvc: Fix crash on allocation failure, avoid allocations

[Andreas Rheinhardt]

Andreas Rheinhardt:
> This is the VVC version of 8b5d15530127fea54e934043a64653859de07353.
> 
> (Hint: This ensures that the order of NALU arrays is OPI-VPS-SPS-PPS-
> Prefix-SEI-Suffix-SEI, regardless of the order in the original
> extradata. I hope this is right.)
> 
> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt at outlook.com>
> ---
>  libavformat/vvc.c | 169 ++++++++++++++++++++--------------------------
>  1 file changed, 73 insertions(+), 96 deletions(-)
> 

Even after these patches, there are some strange things going in vvc.c:
1. There are at least 71 bits in general_constraint_info (if present),
yet only 70 of these are written (the
gci_no_chroma_qp_offset_constraint_flag is not).
2. The code contains checks for VVC_DCI_NUT, yet these are dead, because
these NALU type is filtered out before.
3. A comment claims to need at least one VPS and SPS, but it actually
checks for SPS and PPS. Does someone know what was intended?

- Andreas