Jean-Baptiste Kempf pushed to branch master at VideoLAN / VLC
Commits:
3295489b by Thomas Guillem at 2022-06-04T10:16:40+00:00
clock: avg: add AvgResetAndFill
Refs #27023
- - - - -
6144634a by Thomas Guillem at 2022-06-04T10:16:40+00:00
clock: fill coeff_avg with the initial rate
In order to solve bad convergence of the initial jitter.
This will soften the aout->time_get imprecision at the beginning.
Thanks Denis Charmet for the idea.
Ref #27023
- - - - -
3 changed files:
- src/clock/clock.c
- src/clock/clock_internal.c
- src/clock/clock_internal.h
Changes:
=====================================
src/clock/clock.c
=====================================
@@ -91,9 +91,9 @@ static vlc_tick_t main_stream_to_system(vlc_clock_main_t
*main_clock,
static void vlc_clock_main_reset(vlc_clock_main_t *main_clock)
{
- AvgReset(&main_clock->coeff_avg);
main_clock->coeff = 1.0f;
main_clock->rate = 1.0f;
+ AvgResetAndFill(&main_clock->coeff_avg, main_clock->coeff);
main_clock->offset = VLC_TICK_INVALID;
main_clock->wait_sync_ref_priority = UINT_MAX;
@@ -429,6 +429,7 @@ vlc_clock_main_t *vlc_clock_main_New(struct vlc_logger
*parent_logger, struct vl
main_clock->output_dejitter = AOUT_MAX_PTS_ADVANCE * 2;
AvgInit(&main_clock->coeff_avg, 10);
+ AvgResetAndFill(&main_clock->coeff_avg, main_clock->coeff);
return main_clock;
}
=====================================
src/clock/clock_internal.c
=====================================
@@ -47,6 +47,12 @@ void AvgReset(average_t *avg)
avg->count = 0;
}
+void AvgResetAndFill(average_t *avg, double value)
+{
+ avg->value = value;
+ avg->count = avg->range;
+}
+
void AvgUpdate(average_t *avg, double value)
{
const int new_value_weight = 1;
=====================================
src/clock/clock_internal.h
=====================================
@@ -47,6 +47,7 @@ void AvgInit(average_t *, int range);
void AvgClean(average_t *);
void AvgReset(average_t *);
+void AvgResetAndFill(average_t *, double value);
/* calculates (previous_average * (range - 1) + new_value)/range */
void AvgUpdate(average_t *, double value);
@@ -66,4 +67,4 @@ static inline clock_point_t clock_point_Create(vlc_tick_t
system, vlc_tick_t str
return (clock_point_t) { .system = system, .stream = stream };
}
-#endif
\ No newline at end of file
+#endif
View it on GitLab:
https://code.videolan.org/videolan/vlc/-/compare/744efb1b51497d8a760bf9f05d9ffd8d4c6c5e60...6144634a178f6e876b7dd301e357b6b0bcaa1862
--
View it on GitLab:
https://code.videolan.org/videolan/vlc/-/compare/744efb1b51497d8a760bf9f05d9ffd8d4c6c5e60...6144634a178f6e876b7dd301e357b6b0bcaa1862
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