[FFmpeg-devel] [PATCH 1/2] avcodec/thread: add support for frame threading receive_frame based decoders

[Anton Khirnov]

Quoting Timo Rothenpieler (2022-12-06 16:08:49)
> On 06/12/2022 15:43, Anton Khirnov wrote:
> > Quoting Timo Rothenpieler (2022-12-06 15:39:50)
> >> On 06/12/2022 15:37, Anton Khirnov wrote:
> >>> Quoting Timo Rothenpieler (2022-12-05 14:39:37)
> >>>> This is fairly basic and makes a lot of assumptions, but it works
> >>>> for the most simple cases.
> >>>>
> >>>> For one, it only ever fetches exactly one packet per call to receive_frame.
> >>>> Right now it's impossible for there to ever be more than one, but the API
> >>>> allows for more, which might need handled in the future.
> >>>>
> >>>> It also basically translates the new API back to the old, since that's how
> >>>> the frame threading code operates. Which feels backwards in regards to
> >>>> the new API, but it was the path with least resistance in implementing this.
> >>>
> >>> If it only supports one packet to one frame, then it goes against the
> >>> whole point of using the receive_frame API.
> >>
> >> Otherwise the entirety of pthread_frame.c would need rewritten from
> >> scratch. It has that assumption coded into it.
> > 
> > I told you on IRC I already have a mostly-finished branch that
> > implements threading with receive_frame(), so I don't really understand
> > what's the point of your writing this patch.
> > 
> 
> You said it wasn't even in a state to be tested.
> Do you have a link to it? Happy to help finishing it up.

Sure, see branch 'thread_receive' in git://git.khirnov.net/libav
IIRC it was only missing some allocations for frames or packets in
AVCodecInternal.

-- 
Anton Khirnov