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rtpjitterbuffer: stop buffering and emit EOS at the end of a stream

Browse source 
When using RTP_JITTER_BUFFER_MODE_BUFFER, make sure that the ringbuffer doesn't
get stuck buffering forever when there isn't enough data left to fill the
buffer.
This commit is contained in:
Alessandro Decina 2010-06-02 13:39:10 +02:00
parent d516fc5fd8
commit 4b6cb93025
2 changed files with 64 additions and 25 deletions
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2
common

@ -1 +1 @@
Subproject commit 47683c1bbe3be3c8b2468039aa4cd860bbe03e6c
Subproject commit 4d67bd6f51003ea5c7e7ae75f53ce95acc4c4175

87
gst/rtpmanager/gstrtpjitterbuffer.c
View file

@ -1090,7 +1090,7 @@ gst_rtp_jitter_buffer_sink_event (GstPad * pad, GstEvent * event)
* we are flushing */
ret = priv->srcresult == GST_FLOW_OK;
if (ret && !priv->eos) {
GST_DEBUG_OBJECT (jitterbuffer, "queuing EOS");
GST_INFO_OBJECT (jitterbuffer, "queuing EOS");
priv->eos = TRUE;
JBUF_SIGNAL (priv);
} else if (priv->eos) {
@ -1485,7 +1485,7 @@ eos_reached (GstClock * clock, GstClockTime time, GstClockID id,
JBUF_LOCK_CHECK (priv, flushing);
if (priv->waiting) {
GST_DEBUG_OBJECT (jitterbuffer, "got the NPT timeout");
GST_INFO_OBJECT (jitterbuffer, "got the NPT timeout");
priv->reached_npt_stop = TRUE;
JBUF_SIGNAL (priv);
}
@ -1500,6 +1500,33 @@ flushing:
return FALSE;
}
}
static GstClockTime
compute_elapsed (GstRtpJitterBuffer * jitterbuffer, GstBuffer * outbuf)
{
guint64 ext_time, elapsed, estimated;
guint32 rtp_time;
GstRtpJitterBufferPrivate *priv;
priv = jitterbuffer->priv;
rtp_time = gst_rtp_buffer_get_timestamp (outbuf);
GST_LOG_OBJECT (jitterbuffer, "rtp %" G_GUINT32_FORMAT ", ext %"
G_GUINT64_FORMAT, rtp_time, priv->ext_timestamp);
if (rtp_time < priv->ext_timestamp) {
ext_time = priv->ext_timestamp;
} else {
ext_time = gst_rtp_buffer_ext_timestamp (&priv->ext_timestamp, rtp_time);
}
if (ext_time > priv->clock_base)
elapsed = ext_time - priv->clock_base;
else
elapsed = 0;
elapsed = gst_util_uint64_scale_int (elapsed, GST_SECOND, priv->clock_rate);
return elapsed;
}
/*
* This funcion will push out buffers on the source pad.
@ -1535,8 +1562,37 @@ again:
if (G_LIKELY (!priv->blocked)) {
/* we're buffering but not EOS, wait. */
if (!priv->eos && (!priv->active
|| rtp_jitter_buffer_is_buffering (priv->jbuf)))
goto do_wait;
|| rtp_jitter_buffer_is_buffering (priv->jbuf))) {
GstClockTime elapsed, delay, left;
if (priv->estimated_eos == -1)
goto do_wait;
outbuf = rtp_jitter_buffer_peek (priv->jbuf);
if (outbuf != NULL) {
elapsed = compute_elapsed (jitterbuffer, outbuf);
if (GST_BUFFER_DURATION_IS_VALID (outbuf))
elapsed += GST_BUFFER_DURATION (outbuf);
} else {
GST_INFO_OBJECT (jitterbuffer, "no buffer, using last_elapsed");
elapsed = priv->last_elapsed;
}
delay = rtp_jitter_buffer_get_delay (priv->jbuf);
if (priv->estimated_eos > elapsed)
left = priv->estimated_eos - elapsed;
else
left = 0;
GST_INFO_OBJECT (jitterbuffer, "buffering, elapsed %" GST_TIME_FORMAT
" estimated_eos %" GST_TIME_FORMAT " left %" GST_TIME_FORMAT
" delay %" GST_TIME_FORMAT,
GST_TIME_ARGS (elapsed), GST_TIME_ARGS (priv->estimated_eos),
GST_TIME_ARGS (left), GST_TIME_ARGS (delay));
if (left > delay)
goto do_wait;
}
/* if we have a packet, we can exit the loop and grab it */
if (rtp_jitter_buffer_num_packets (priv->jbuf) > 0)
break;
@ -1551,7 +1607,7 @@ again:
GST_OBJECT_LOCK (jitterbuffer);
clock = GST_ELEMENT_CLOCK (jitterbuffer);
if (clock) {
GST_DEBUG_OBJECT (jitterbuffer, "scheduling timeout");
GST_INFO_OBJECT (jitterbuffer, "scheduling timeout");
id = gst_clock_new_single_shot_id (clock, sync_time);
gst_clock_id_wait_async (id, (GstClockCallback) eos_reached,
jitterbuffer);
@ -1768,26 +1824,9 @@ push_buffer:
/* update the elapsed time when we need to check against the npt stop time. */
if (priv->npt_stop != -1 && priv->ext_timestamp != -1
&& priv->clock_base != -1 && priv->clock_rate > 0) {
guint64 ext_time, elapsed, estimated;
guint32 rtp_time;
guint64 elapsed, estimated;
rtp_time = gst_rtp_buffer_get_timestamp (outbuf);
GST_LOG_OBJECT (jitterbuffer, "rtp %" G_GUINT32_FORMAT ", ext %"
G_GUINT64_FORMAT, rtp_time, priv->ext_timestamp);
if (rtp_time < priv->ext_timestamp) {
ext_time = priv->ext_timestamp;
} else {
ext_time = gst_rtp_buffer_ext_timestamp (&priv->ext_timestamp, rtp_time);
}
if (ext_time > priv->clock_base)
elapsed = ext_time - priv->clock_base;
else
elapsed = 0;
elapsed = gst_util_uint64_scale_int (elapsed, GST_SECOND, priv->clock_rate);
elapsed = compute_elapsed (jitterbuffer, outbuf);
if (elapsed > priv->last_elapsed) {
guint64 left;