[FFmpeg-devel] [PATCH v3 1/4] lavc/hevc_refs: fix dpb logical for IRAP

[Xiang, Haihao]

On Mon, 2022-07-18 at 09:09 +0000, Xiang, Haihao wrote:
> On Fri, 2022-07-15 at 13:06 +0800, Fei Wang wrote:
> > From: Xu Guangxin <guangxin.xu at intel.com>
> > 
> > According to C.5.2.2, item 2. When we got an IRAP, and the
> > NoOutputOfPriorPicsFlag = 0, we need bump all outputable frames.
> > 
> > Tested-by: Fei Wang <fei.w.wang at intel.com>
> > Signed-off-by: Xu Guangxin <guangxin.xu at intel.com>
> > ---
> > update:
> > 1. clean and replace 0xff with HEVC_SEQUENCE_COUNTER_MASK
> > 
> >  libavcodec/hevc_refs.c | 23 +++++++++++++----------
> >  1 file changed, 13 insertions(+), 10 deletions(-)
> > 
> > diff --git a/libavcodec/hevc_refs.c b/libavcodec/hevc_refs.c
> > index 6a70c817b0..2b0468d6c4 100644
> > --- a/libavcodec/hevc_refs.c
> > +++ b/libavcodec/hevc_refs.c
> > @@ -175,21 +175,24 @@ int ff_hevc_set_new_ref(HEVCContext *s, AVFrame
> > **frame,
> > int poc)
> >  
> >  int ff_hevc_output_frame(HEVCContext *s, AVFrame *out, int flush)
> >  {
> > +    if (IS_IRAP(s) && s->no_rasl_output_flag == 1) {
> > +        const static int mask = HEVC_FRAME_FLAG_BUMPING |
> > HEVC_FRAME_FLAG_OUTPUT;
> > +        for (int i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) {
> > +            HEVCFrame *frame = &s->DPB[i];
> > +            if ((frame->flags & mask) == HEVC_FRAME_FLAG_OUTPUT &&
> > +                frame->sequence != s->seq_decode) {
> > +                if (s->sh.no_output_of_prior_pics_flag == 1)
> > +                    ff_hevc_unref_frame(s, frame, HEVC_FRAME_FLAG_OUTPUT);
> > +                else
> > +                    frame->flags |= HEVC_FRAME_FLAG_BUMPING;
> > +            }
> > +        }
> > +    }
> >      do {
> >          int nb_output = 0;
> >          int min_poc   = INT_MAX;
> >          int i, min_idx, ret;
> >  
> > -        if (s->sh.no_output_of_prior_pics_flag == 1 && s-
> > >no_rasl_output_flag 
> > == 1) {
> > -            for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) {
> > -                HEVCFrame *frame = &s->DPB[i];
> > -                if (!(frame->flags & HEVC_FRAME_FLAG_BUMPING) && frame->poc
> > != s->poc &&
> > -                        frame->sequence == s->seq_output) {
> > -                    ff_hevc_unref_frame(s, frame, HEVC_FRAME_FLAG_OUTPUT);
> > -                }
> > -            }
> > -        }
> > -
> >          for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) {
> >              HEVCFrame *frame = &s->DPB[i];
> >              if ((frame->flags & HEVC_FRAME_FLAG_OUTPUT) &&
> 
> Patchset LGTM. 
> 

The patchset works well for me. Are there any more comments here ? If not, I'll
apply this patchset in a few days.

Thanks
Haihao