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authorwm4 <wm4@nowhere>2015-02-01 18:32:26 +0100
committerwm4 <wm4@nowhere>2015-02-01 18:32:26 +0100
commit5af4c81e5be9d245c3780f3cca5515d09b0f5fbf (patch)
tree5857604e19fcb1c4393e3aa119c9cb28e810edb4
parent12dbbcbb15ca607f0c8c713ed2b24378b24c713c (diff)
downloadmpv-5af4c81e5be9d245c3780f3cca5515d09b0f5fbf.tar.bz2
mpv-5af4c81e5be9d245c3780f3cca5515d09b0f5fbf.tar.xz
player: dump audio jitter to stats file
This allows us to plot the difference between video timestamps, and the adjusted video timestamps due to syncing video to audio speed.
-rw-r--r--player/video.c9
1 files changed, 5 insertions, 4 deletions
diff --git a/player/video.c b/player/video.c
index 0485ba70ec..17530ab279 100644
--- a/player/video.c
+++ b/player/video.c
@@ -662,7 +662,11 @@ static void update_avsync_before_frame(struct MPContext *mpctx)
!ao_untimed(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) {
/* 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
* now undesirably depends on how often this code runs
* (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;
}