[vlc-devel] [PATCH v3] video_output: tell when a display is actually late rather than when it might be

Steve Lhomme robux4 at ycbcr.xyz
Thu Jan 21 12:09:29 UTC 2021


v3: merge the two if() on late > 0

On 2021-01-21 13:08, Steve Lhomme wrote:
> ---
>   src/video_output/video_output.c | 9 +++++----
>   1 file changed, 5 insertions(+), 4 deletions(-)
> 
> diff --git a/src/video_output/video_output.c b/src/video_output/video_output.c
> index 93c3d50c75c..eeb49e9ab62 100644
> --- a/src/video_output/video_output.c
> +++ b/src/video_output/video_output.c
> @@ -1108,9 +1108,6 @@ static picture_t *ThreadDisplayPreparePicture(vout_thread_sys_t *vout, bool reus
>                           picture_Release(decoded);
>                           vout_statistic_AddLost(&sys->statistic, 1);
>                           continue;
> -                    } else if (late > 0) {
> -                        msg_Dbg(&vout->obj, "picture might be displayed late (missing %"PRId64" ms)", MS_FROM_VLC_TICK(late));
> -                        vout_statistic_AddLate(&sys->statistic, 1);
>                       }
>                   }
>                   vlc_video_context *pic_vctx = picture_GetVideoContext(decoded);
> @@ -1416,8 +1413,12 @@ static int ThreadDisplayRenderPicture(vout_thread_sys_t *vout, bool render_now)
>       system_now = vlc_tick_now();
>       if (!render_now)
>       {
> -        if (unlikely(system_now > system_pts))
> +        const vlc_tick_t late = system_now - system_pts;
> +        if (unlikely(late > 0))
>           {
> +            msg_Dbg(vd, "picture displayed late (missing %"PRId64" ms)", MS_FROM_VLC_TICK(late));
> +            vout_statistic_AddLate(&sys->statistic, 1);
> +
>               /* vd->prepare took too much time. Tell the clock that the pts was
>                * rendered late. */
>               system_pts = system_now;
> -- 
> 2.29.2
> 
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