[FFmpeg-devel] [PATCH v2 6/9] cbs_av1: Implement parser entrypoint

[James Almer]

On 4/1/2019 8:39 PM, Mark Thompson wrote:
> ---
> Unsure about this one - while the patch is short, it's rather invasive in a pretty ugly way with how it abuses the read call.  It will still do allocations for the decomposition because of that, even though we don't really want them.
> 
> Any ideas welcome.

How about copying most of cbs_av1_read_unit() into cbs_av1_parse_obu(),
factorizing the parts that can be shared (like pretty much everything
before the switch), without the call to ff_cbs_alloc_unit_content() and
only bothering to parse Sequence Header, Frame Header, Frame (Only the
header, and not the Tile Group part), using the needed structs on stack?
You wouldn't have to worry about cbs_av1_ref_tile_data() being called
with unit->data_ref as NULL at all.