vo: kill non-working missed frame detection

This was not very reliable.

In the normal vo_opengl case, this didn't deal well enough with vsync
jitter. Vsync timings can jitter quite extremely, up to a whole vsync
duration, in which case the "missed" frame counter keeps growing, even
though nothing is wrong. This behavior also messes up the A/V difference
calculation, but as long as it's within tolerance, it won't provoke
extra frame dropping/repeating. Real misses are harder to detect, and I
might add such detection later.

In the vo_opengl_cb case, this was additionally broken due to the
asynchronity between renderer and VO threads.

1 files changed, 0 insertions, 6 deletions

diff --git a/video/out/vo.c b/video/out/vo.c
index 3377145e06..48812fbfdd 100644
--- a/video/out/vo.c
+++ b/video/out/vo.c
@@ -613,8 +613,6 @@ static bool render_frame(struct vo *vo)
     vo->in->vsync_interval = in->display_fps > 0 ? 1e6 / in->display_fps : 0;
     vo->in->vsync_interval = MPMAX(vo->in->vsync_interval, 1);
 
-    bool continuous = in->current_frame && in->current_frame->display_synced;
-
     if (in->frame_queued) {
         talloc_free(in->current_frame);
         in->current_frame = in->frame_queued;
@@ -747,10 +745,6 @@ static bool render_frame(struct vo *vo)
         in->dropped_frame = prev_drop_count < vo->in->drop_count;
         in->rendering = false;
 
-        if (in->current_frame && in->current_frame->display_synced &&
-            continuous && in->vsync_interval_approx > in->vsync_interval * 3 / 2)
-            in->missed_count += 1;
-
         double diff = (in->vsync_interval - in->vsync_interval_approx) / 1e6;
         if (fabs(diff) < 0.150)
             MP_STATS(vo, "value %f vsync-diff", diff);