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Simplify clock estimation

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The slope encodes the drift between the device clock and the computer
clock. Its real value is expected very close to 1.

To estimate it, just assume it is exactly 1.

Since the clock is used to estimate very close points in the future, the
error caused by clock drift is totally negligible, and in practice it is
way lower than the slope estimation error.

Therefore, only estimate the offset.
This commit is contained in:
Romain Vimont
2023-03-27 02:12:59 +02:00
parent 0ebb3df69c
commit 2f9396e24a
5 changed files with 23 additions and 213 deletions
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2
app/src/delay_buffer.c
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@@ -194,7 +194,7 @@ sc_delay_buffer_frame_sink_push(struct sc_frame_sink *sink,
sc_clock_update(&db->clock, sc_tick_now(), pts);
sc_cond_signal(&db->wait_cond);
if (db->first_frame_asap && db->clock.count == 1) {
if (db->first_frame_asap && db->clock.range == 1) {
sc_mutex_unlock(&db->mutex);
return sc_frame_source_sinks_push(&db->frame_source, frame);
}