diff options
-rw-r--r-- | libavdevice/timefilter.c | 5 | ||||
-rw-r--r-- | libavdevice/timefilter.h | 9 |
2 files changed, 14 insertions, 0 deletions
diff --git a/libavdevice/timefilter.c b/libavdevice/timefilter.c index 8451466657..a423fc0859 100644 --- a/libavdevice/timefilter.c +++ b/libavdevice/timefilter.c @@ -83,6 +83,11 @@ double ff_timefilter_update(TimeFilter *self, double system_time, double period) return self->cycle_time; } +double ff_timefilter_eval(TimeFilter *self, double delta) +{ + return self->cycle_time + self->clock_period * delta; +} + #ifdef TEST #include "libavutil/lfg.h" #define LFG_MAX ((1LL << 32) - 1) diff --git a/libavdevice/timefilter.h b/libavdevice/timefilter.h index 33862f63bb..66629591a2 100644 --- a/libavdevice/timefilter.h +++ b/libavdevice/timefilter.h @@ -82,6 +82,15 @@ TimeFilter * ff_timefilter_new(double clock_period, double feedback2_factor, dou double ff_timefilter_update(TimeFilter *self, double system_time, double period); /** + * Evaluate the filter at a specified time + * + * @param delta difference between the requested time and the current time + * (last call to ff_timefilter_update). + * @return the filtered time + */ +double ff_timefilter_eval(TimeFilter *self, double delta); + +/** * Reset the filter * * This function should mainly be called in case of XRUN. |