[FFmpeg-devel] [PATCH 6/9] fftools/ffprobe: export Tile Grid Stream Group parameters

[Stefano Sabatini]

On date Tuesday 2024-03-05 12:50:09 -0300, James Almer wrote:
> On 3/5/2024 12:24 PM, Stefano Sabatini wrote:
> > On date Tuesday 2024-03-05 12:14:53 -0300, James Almer wrote:
> > > On 3/4/2024 9:00 PM, James Almer wrote:
> > > > Signed-off-by: James Almer <jamrial at gmail.com>
> > > > ---
> > > >    fftools/ffprobe.c | 41 ++++++++++++++++++++++++++++++++++++-----
> > > >    1 file changed, 36 insertions(+), 5 deletions(-)
> > [...]
> > 
> > > I think I'll withdraw this patch for now. Some stream group types have
> > > several layers of data, so components and pieces would not be enough. This
> > > is the case for IAMF Audio Elements and Mix Presentation, for example.
> > > A generic way to add N amount of layers would be needed.
> > 
> > I see.
> > 
> > Does it mean that the nesting level is greater than 3 (side_data,
> > components, pieces)?
> 

> Yes. Look at AVIAMFMixPresentation, which has an array of AVIAMFSubmix,
> which in turn have an array of AVIAMFSubmixLayout plus an array of
> AVIAMFSubmixElement per submix, the latter which has a AVIAMFParamDefinition
> per element.
> If the AVIAMFMixPresentation is the component, the AVIAMFSubmix would be the
> piece, and then we ran out of levels.

Well, the simplemst approach is to add more levels to the layout
(side_data, components, pieces, subpieces?, ...).