[FFmpeg-devel] [PATCH 09/10] lavc/hevc_ps: reduce the size of ShortTermRPS.used

[Anton Khirnov]

Quoting James Almer (2024-04-10 15:42:51)
> 
> 
> On 4/10/2024 10:31 AM, Anton Khirnov wrote:
> > diff --git a/libavcodec/vulkan_hevc.c b/libavcodec/vulkan_hevc.c
> > index 5d7c6b1b64..c2b65fc201 100644
> > --- a/libavcodec/vulkan_hevc.c
> > +++ b/libavcodec/vulkan_hevc.c
> > @@ -374,17 +374,17 @@ static void set_sps(const HEVCSPS *sps, int sps_idx,
> >           /* NOTE: This is the predicted, and *reordered* version.
> >            * Probably incorrect, but the spec doesn't say which version to use. */
> >           for (int j = 0; j < sps->st_rps[i].num_delta_pocs; j++)
> > -            str[i].used_by_curr_pic_flag |= sps->st_rps[i].used[j] << j;
> > +            str[i].used_by_curr_pic_flag |= st_rps->used;
> >   
> >           for (int j = 0; j < str[i].num_negative_pics; j++) {
> > -            str[i].delta_poc_s0_minus1[j] = st_rps->delta_poc[j] - (j ? st_rps->delta_poc[j - 1] : 0) - 1;
> > -            str[i].used_by_curr_pic_s0_flag |= sps->st_rps[i].used[j] << j;
> > +            str[i].delta_poc_s0_minus1[j]    = st_rps->delta_poc[j] - (j ? st_rps->delta_poc[j - 1] : 0) - 1;
> > +            str[i].used_by_curr_pic_s0_flag |= st_rps->used & ((1 << str[i].num_negative_pics) - 1);
> 
> av_mod_uintp2(st_rps->used, str[i].num_negative_pics).

unrelated change

-- 
Anton Khirnov