[FFmpeg-devel] [PATCH 0/7] Improve CBS unit content alloc/free/clone behaviour

[Mark Thompson]

On 26/11/2018 13:39, Andreas Rheinhardt wrote:
> This will enable us to change e.g. the parameter sets of H.2645 in ways
> that would change the parsing process of future units. An example of
> this is the h264_redundant_pps bsf.

I thought quite a bit more about how the alloc/free/clone should fit together here.  Following is a patch series implementing it using tables defining how each unit works, which I think ends up being nicer than the previous setup with ad-hoc functions for each case.  The existing ad-hoc functions for the hardest cases (that is, SEI) stay, but everything else in H.26[45] can be handled without any new functions at all.

It ends up implementing pretty the same make_unit_writable() function that you proposed, so the last patch is your one to h264_redundant_pps.

- Mark