diff --git a/libavformat/timefilter.c b/libavformat/timefilter.c index a90371f2c2..7109a0a27f 100644 --- a/libavformat/timefilter.c +++ b/libavformat/timefilter.c @@ -32,6 +32,7 @@ struct TimeFilter { double feedback2_factor; double feedback3_factor; double integrator2_state; + int count; }; TimeFilter * ff_timefilter_new(double feedback2_factor, double feedback3_factor) @@ -51,10 +52,12 @@ void ff_timefilter_destroy(TimeFilter *self) void ff_timefilter_reset(TimeFilter *self) { self->cycle_time = 0; + self->count = 0; } double ff_timefilter_update(TimeFilter *self, double system_time, double period) { + self->count++; if (!self->cycle_time) { /// init loop self->cycle_time = system_time; @@ -65,7 +68,7 @@ double ff_timefilter_update(TimeFilter *self, double system_time, double period) loop_error = system_time - self->cycle_time; /// update loop - self->cycle_time += self->feedback2_factor * loop_error; + self->cycle_time += FFMAX(self->feedback2_factor, 1.0/(self->count)) * loop_error; self->integrator2_state += self->feedback3_factor * loop_error / period; } return self->cycle_time;