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player: dump audio jitter to stats file

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This allows us to plot the difference between video timestamps, and the
adjusted video timestamps due to syncing video to audio speed.
This commit is contained in:
wm4 2015-02-01 18:32:26 +01:00
parent 12dbbcbb15
commit 5af4c81e5b
1 changed files with 5 additions and 4 deletions
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9
player/video.c
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@ -662,7 +662,11 @@ static void update_avsync_before_frame(struct MPContext *mpctx)
!ao_untimed(mpctx->ao)) !ao_untimed(mpctx->ao))
{ {
double buffered_audio = ao_get_delay(mpctx->ao); double buffered_audio = ao_get_delay(mpctx->ao);
MP_TRACE(mpctx, "audio delay=%f\n", buffered_audio);
double predicted = mpctx->delay / opts->playback_speed +
mpctx->time_frame;
double difference = buffered_audio - predicted;
MP_STATS(mpctx, "value %f audio-diff", difference);
if (opts->autosync) { if (opts->autosync) {
/* Smooth reported playback position from AO by averaging /* Smooth reported playback position from AO by averaging
@ -672,9 +676,6 @@ static void update_avsync_before_frame(struct MPContext *mpctx)
* This is badly implemented; the behavior of the smoothing * This is badly implemented; the behavior of the smoothing
* now undesirably depends on how often this code runs * now undesirably depends on how often this code runs
* (mainly depends on video frame rate). */ * (mainly depends on video frame rate). */
double predicted = mpctx->delay / opts->playback_speed +
mpctx->time_frame;
double difference = buffered_audio - predicted;
buffered_audio = predicted + difference / opts->autosync; buffered_audio = predicted + difference / opts->autosync;
} }