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video: add VOCTRL_GET_RECENT_FLIP_TIME 

This could be used by VO implementations to report a recent vsync time
to the generic VO code, which in turn will use it and the display FPS
to estimate at which point in time the next vsync will happen.
This commit is contained in:
wm4 2014-08-18 23:01:13 +02:00
parent cd2e4db8a5
commit 3d968fc620
2 changed files with 7 additions and 1 deletions
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7
video/out/vo.c
View File

@ -589,7 +589,12 @@ static bool render_frame(struct vo *vo)
else
vo->driver->flip_page(vo);
in->last_flip = mp_time_us();
in->last_flip = -1;
vo->driver->control(vo, VOCTRL_GET_RECENT_FLIP_TIME, &in->last_flip);
if (in->last_flip < 0)
in->last_flip = mp_time_us();
long phase = in->last_flip % in->vsync_interval;
MP_DBG(vo, "phase: %ld\n", phase);

1
video/out/vo.h
View File

@ -86,6 +86,7 @@ enum mp_voctrl {
VOCTRL_GET_ICC_PROFILE_PATH, // char**
VOCTRL_GET_DISPLAY_FPS, // double*
VOCTRL_GET_RECENT_FLIP_TIME, // int64_t* (using mp_time_us())
VOCTRL_GET_PREF_DEINT, // int*
};