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gst-libs/gst/audio/gstbaseaudiosink.c: We can only use our optimal calibration if we prerolled before the latency exp...

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Original commit message from CVS:
* gst-libs/gst/audio/gstbaseaudiosink.c:
(gst_base_audio_sink_sync_latency):
We can only use our optimal calibration if we prerolled before the
latency expired.
This commit is contained in:
Wim Taymans 2008-05-20 16:26:53 +00:00
parent d0932b0aa1
commit f36d9d6b08
2 changed files with 22 additions and 18 deletions
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7
ChangeLog
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@ -1,3 +1,10 @@
2008-05-20 Wim Taymans <wim.taymans@collabora.co.uk>
* gst-libs/gst/audio/gstbaseaudiosink.c:
(gst_base_audio_sink_sync_latency):
We can only use our optimal calibration if we prerolled before the
latency expired.
2008-05-20 Tim-Philipp Müller <tim.muller at collabora co uk> 2008-05-20 Tim-Philipp Müller <tim.muller at collabora co uk>
* configure.ac: * configure.ac:

33
gst-libs/gst/audio/gstbaseaudiosink.c
View file

@ -1025,6 +1025,7 @@ gst_base_audio_sink_sync_latency (GstBaseSink * bsink)
GstBaseAudioSink *sink; GstBaseAudioSink *sink;
GstClockTime itime, etime; GstClockTime itime, etime;
GstClockTime rate_num, rate_denom; GstClockTime rate_num, rate_denom;
GstClockTimeDiff jitter;
sink = GST_BASE_AUDIO_SINK (bsink); sink = GST_BASE_AUDIO_SINK (bsink);
@ -1039,8 +1040,6 @@ gst_base_audio_sink_sync_latency (GstBaseSink * bsink)
GST_OBJECT_UNLOCK (sink); GST_OBJECT_UNLOCK (sink);
do { do {
GstClockTimeDiff jitter;
GST_DEBUG_OBJECT (sink, "checking preroll"); GST_DEBUG_OBJECT (sink, "checking preroll");
/* first wait for the playing state before we can continue */ /* first wait for the playing state before we can continue */
@ -1077,23 +1076,24 @@ gst_base_audio_sink_sync_latency (GstBaseSink * bsink)
* yet. if some other error occures, we continue. */ * yet. if some other error occures, we continue. */
} while (status == GST_CLOCK_UNSCHEDULED); } while (status == GST_CLOCK_UNSCHEDULED);
GST_OBJECT_LOCK (sink); GST_OBJECT_LOCK (sink);
GST_DEBUG_OBJECT (sink, "latency synced"); GST_DEBUG_OBJECT (sink, "latency synced");
/* if we are slaved to a clock, we need to set the initial /* when we prerolled in time, we can accurately set the calibration,
* calibration */ * our internal clock should exactly have been the latency (== the running
switch (sink->priv->slave_method) { * time of the external clock) */
case GST_BASE_AUDIO_SINK_SLAVE_SKEW: etime = GST_ELEMENT_CAST (sink)->base_time + time;
case GST_BASE_AUDIO_SINK_SLAVE_RESAMPLE: itime = gst_base_audio_sink_get_time (sink->provided_clock, sink);
case GST_BASE_AUDIO_SINK_SLAVE_NONE:
default: if (status == GST_CLOCK_EARLY) {
/* When we are prerolled, our internal clock should exactly have been the /* when we prerolled late, we have to take into account the lateness */
* latency (== the running time of the external clock) */ GST_DEBUG_OBJECT (sink, "late preroll, adding jitter");
etime = GST_ELEMENT_CAST (sink)->base_time + time; etime += jitter;
itime = gst_base_audio_sink_get_time (sink->provided_clock, sink);
break;
} }
/* start ringbuffer so we can start slaving right away when we need to */
gst_ring_buffer_start (sink->ringbuffer);
GST_DEBUG_OBJECT (sink, GST_DEBUG_OBJECT (sink,
"internal time: %" GST_TIME_FORMAT " external time: %" GST_TIME_FORMAT, "internal time: %" GST_TIME_FORMAT " external time: %" GST_TIME_FORMAT,
GST_TIME_ARGS (itime), GST_TIME_ARGS (etime)); GST_TIME_ARGS (itime), GST_TIME_ARGS (etime));
@ -1120,9 +1120,6 @@ gst_base_audio_sink_sync_latency (GstBaseSink * bsink)
sink->priv->avg_skew = -1; sink->priv->avg_skew = -1;
sink->next_sample = -1; sink->next_sample = -1;
/* start ringbuffer so we can start slaving right away when we need to */
gst_ring_buffer_start (sink->ringbuffer);
return GST_FLOW_OK; return GST_FLOW_OK;
/* ERRORS */ /* ERRORS */