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wayland: simplify presentation time

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Why on earth did I ever bother with this dumb crap? If we do not have
any presentation statistics, just set the relevant vo_sync_info values
to -1 to disable it. It's much simpler than using mp deltas and trying
to keep up with mpv's clock. This also appears to fix audio/video
desynchronization if you start a video with the pause flag, move it out
of view, and then unpause it. Technically harmless since the video
wasn't even in view and putting back in view recovered it, but a quieter
terminal is better.
This commit is contained in:
Dudemanguy 2020-08-21 22:22:10 -05:00
parent 85f38a9765
commit b0f0be7678
2 changed files with 10 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
video/out/wayland_common.c
View File

@ -1616,19 +1616,18 @@ void queue_new_sync(struct vo_wayland_state *wl)
void wayland_sync_swap(struct vo_wayland_state *wl)
{
int index = wl->sync_size - 1;
int64_t mp_time = mp_time_us();
wl->last_skipped_vsyncs = 0;
// If these are the same, presentation feedback has not been received.
// This will happen if the window is obscured/hidden in some way. Update
// the values based on the difference in mp_time.
if (wl->sync[index].ust == wl->last_ust && wl->last_ust) {
wl->sync[index].ust += mp_time - wl->sync[index].last_mp_time;
wl->sync[index].msc += 1;
wl->sync[index].sbc += 1;
// This will happen if the window is obscured/hidden in some way. Set
// these values to -1 to disable presentation feedback in mpv's core.
if (wl->sync[index].ust == wl->last_ust) {
wl->last_skipped_vsyncs = -1;
wl->vsync_duration = -1;
wl->last_queue_display_time = -1;
return;
}
wl->sync[index].last_mp_time = mp_time;
wl->last_skipped_vsyncs = 0;
int64_t ust_passed = wl->sync[index].ust ? wl->sync[index].ust - wl->last_ust: 0;
wl->last_ust = wl->sync[index].ust;
@ -1647,7 +1646,7 @@ void wayland_sync_swap(struct vo_wayland_state *wl)
}
uint64_t now_monotonic = ts.tv_sec * 1000000LL + ts.tv_nsec / 1000;
uint64_t ust_mp_time = mp_time - (now_monotonic - wl->sync[index].ust);
uint64_t ust_mp_time = mp_time_us() - (now_monotonic - wl->sync[index].ust);
wl->last_sbc_mp_time = ust_mp_time;
}

1
video/out/wayland_common.h
View File

@ -35,7 +35,6 @@ struct vo_wayland_sync {
int64_t ust;
int64_t msc;
int64_t sbc;
int64_t last_mp_time;
bool filled;
};