[FFmpeg-devel] [PATCH v2] avcodec/h264dec: Remove ff_h264_draw_horiz_band

Anton Khirnov anton at khirnov.net
Tue Jul 2 11:12:27 EEST 2024


Quoting Kieran Kunhya via ffmpeg-devel (2024-06-14 15:27:32)
> On Fri, Jun 14, 2024 at 1:53 PM Paul B Mahol <onemda at gmail.com> wrote:
> >
> >
> >
> > On Fri, Jun 14, 2024 at 2:41 PM Kieran Kunhya via ffmpeg-devel <ffmpeg-devel at ffmpeg.org> wrote:
> >>
> >> On Sun, Jun 9, 2024 at 2:39 AM Andreas Rheinhardt
> >> <andreas.rheinhardt at outlook.com> wrote:
> >> >
> >> > The H.264 decoder does not support draw_horiz_band (it does not have
> >> > the AV_CODEC_CAP_DRAW_HORIZ_BAND), making ff_h264_draw_horiz_band()
> >> > legally dead. The function here always calls draw_horiz_band
> >> > in coded order, although the default case is display order.
> >>
> >> Why would you want a low latency decode mode with reordering?
> >> I have no idea about hwaccel, but I believe with low latency encoded
> >> video this does work.
> >
> >
> > Since when?
> >
> > See 0da71265d84b587c7159cd82708ca60ad050dd4c from 2003.
> >
> > flag remain commented out from then to this day.
> 
> It still worked if you controlled the input.

Do you actually use this, or know anyone who does?

-- 
Anton Khirnov


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