[FFmpeg-devel] [DISCUSSION] New iteration APIs, lavf and lavd

[wm4]

On Mon, 19 Mar 2018 02:59:54 +0000
Josh de Kock <josh at itanimul.li> wrote:

> Hi,
> 
> The new iteration API to replace the old _next() is nearing the end of 
> it's completion with the lavfi patch on the mailing list and only one 
> outstanding issue:
> 
> AVOptions would not be found for devices as there is no AVClass for 
> lavd. At the moment it would work if you were to still call 
> avdevice_register_all() because then devices get registered as formats 
> in the old API (which the child_class_next function still uses). When 
> the format_child_class_next() function switches to the iterate() API
> it would no longer have access to devices and thus there would be no way 
> for av_opt_find() to find an option for devices. The fix for this is 
> simple, add an AVClass for lavd--fairly clean and unobjectionable.

I really don't understand the problem, or why this AVClass crap is
needed. It sounds absurd.