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rtpjitterbuffer: keep delay as a separate variable in timer

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Keep a separate delay in the timer so that we still know the original timestamp
of the packet that this timer refers to. We can then place the correct
running-time in the Retransmission event.
This commit is contained in:
Wim Taymans 2013-09-19 14:12:18 +02:00
parent d34184dd03
commit fd6c57cf10
1 changed files with 30 additions and 20 deletions
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50
gst/rtpmanager/gstrtpjitterbuffer.c
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@ -244,6 +244,7 @@ typedef struct
GstClockTime timeout;
GstClockTime duration;
GstClockTime rtx_base;
GstClockTime rtx_delay;
GstClockTime rtx_retry;
} TimerData;
@ -1487,7 +1488,8 @@ recalculate_timer (GstRtpJitterBuffer * jitterbuffer, TimerData * timer)
static TimerData *
add_timer (GstRtpJitterBuffer * jitterbuffer, TimerType type,
guint16 seqnum, guint num, GstClockTime timeout, GstClockTime duration)
guint16 seqnum, guint num, GstClockTime timeout, GstClockTime delay,
GstClockTime duration)
{
GstRtpJitterBufferPrivate *priv = jitterbuffer->priv;
TimerData *timer;
@ -1504,10 +1506,11 @@ add_timer (GstRtpJitterBuffer * jitterbuffer, TimerType type,
timer->type = type;
timer->seqnum = seqnum;
timer->num = num;
timer->timeout = timeout;
timer->timeout = timeout + delay;
timer->duration = duration;
if (type == TIMER_TYPE_EXPECTED) {
timer->rtx_base = timeout;
timer->rtx_delay = delay;
timer->rtx_retry = 0;
}
recalculate_timer (jitterbuffer, timer);
@ -1518,7 +1521,7 @@ add_timer (GstRtpJitterBuffer * jitterbuffer, TimerType type,
static void
reschedule_timer (GstRtpJitterBuffer * jitterbuffer, TimerData * timer,
guint16 seqnum, GstClockTime timeout)
guint16 seqnum, GstClockTime timeout, GstClockTime delay)
{
GstRtpJitterBufferPrivate *priv = jitterbuffer->priv;
gboolean seqchange, timechange;
@ -1536,10 +1539,11 @@ reschedule_timer (GstRtpJitterBuffer * jitterbuffer, TimerData * timer,
"replace timer for seqnum %d->%d to %" GST_TIME_FORMAT,
oldseq, seqnum, GST_TIME_ARGS (timeout));
timer->timeout = timeout;
timer->timeout = timeout + delay;
timer->seqnum = seqnum;
if (seqchange && timer->type == TIMER_TYPE_EXPECTED) {
timer->rtx_base = timeout;
timer->rtx_delay = delay;
timer->rtx_retry = 0;
}
@ -1564,9 +1568,9 @@ set_timer (GstRtpJitterBuffer * jitterbuffer, TimerType type,
/* find the seqnum timer */
timer = find_timer (jitterbuffer, type, seqnum);
if (timer == NULL) {
timer = add_timer (jitterbuffer, type, seqnum, 0, timeout, -1);
timer = add_timer (jitterbuffer, type, seqnum, 0, timeout, 0, -1);
} else {
reschedule_timer (jitterbuffer, timer, seqnum, timeout);
reschedule_timer (jitterbuffer, timer, seqnum, timeout, 0);
}
return timer;
}
@ -1633,21 +1637,24 @@ update_timers (GstRtpJitterBuffer * jitterbuffer, guint16 seqnum,
/* max gap, we exceeded the max reorder distance and we don't expect the
* missing packet to be this reordered */
if (test->rtx_retry == 0 && test->type == TIMER_TYPE_EXPECTED)
reschedule_timer (jitterbuffer, test, test->seqnum, -1);
reschedule_timer (jitterbuffer, test, test->seqnum, -1, 0);
}
}
if (priv->packet_spacing > 0 && do_next_seqnum && priv->do_retransmission) {
GstClockTime expected;
GstClockTime expected, delay;
/* calculate expected arrival time of the next seqnum */
expected = dts + priv->packet_spacing + (priv->rtx_delay * GST_MSECOND);
expected = dts + priv->packet_spacing;
delay = priv->rtx_delay * GST_MSECOND;
/* and update/install timer for next seqnum */
if (timer)
reschedule_timer (jitterbuffer, timer, priv->next_in_seqnum, expected);
reschedule_timer (jitterbuffer, timer, priv->next_in_seqnum, expected,
delay);
else
add_timer (jitterbuffer, TIMER_TYPE_EXPECTED, priv->next_in_seqnum, 0,
expected, priv->packet_spacing);
expected, delay, priv->packet_spacing);
} else if (timer && timer->type != TIMER_TYPE_DEADLINE) {
/* if we had a timer, remove it, we don't know when to expect the next
* packet. */
@ -1765,7 +1772,7 @@ calculate_expected (GstRtpJitterBuffer * jitterbuffer, guint32 expected,
/* this timer will fire immediately and the lost event will be pushed from
* the timer thread */
add_timer (jitterbuffer, TIMER_TYPE_LOST, expected, lost_packets,
priv->last_in_dts + duration, gap_time);
priv->last_in_dts + duration, 0, gap_time);
expected += lost_packets;
priv->last_in_dts += gap_time;
@ -1783,7 +1790,7 @@ calculate_expected (GstRtpJitterBuffer * jitterbuffer, guint32 expected,
}
while (expected < seqnum) {
add_timer (jitterbuffer, type, expected, 0, expected_dts, duration);
add_timer (jitterbuffer, type, expected, 0, expected_dts, 0, duration);
expected_dts += duration;
expected++;
}
@ -2311,11 +2318,12 @@ do_expected_timeout (GstRtpJitterBuffer * jitterbuffer, TimerData * timer,
gst_structure_new ("GstRTPRetransmissionRequest",
"seqnum", G_TYPE_UINT, (guint) timer->seqnum,
"running-time", G_TYPE_UINT64, timer->rtx_base,
"delay", G_TYPE_UINT, GST_TIME_AS_MSECONDS (timer->rtx_retry),
"frequency", G_TYPE_UINT, priv->rtx_retry_timeout,
"period", G_TYPE_UINT, priv->rtx_retry_period,
"deadline", G_TYPE_UINT, priv->latency_ms,
"packet-spacing", G_TYPE_UINT64, priv->packet_spacing, NULL));
"delay", G_TYPE_UINT,
GST_TIME_AS_MSECONDS (timer->rtx_delay + timer->rtx_retry),
"frequency", G_TYPE_UINT, priv->rtx_retry_timeout, "period",
G_TYPE_UINT, priv->rtx_retry_period, "deadline", G_TYPE_UINT,
priv->latency_ms, "packet-spacing", G_TYPE_UINT64,
priv->packet_spacing, NULL));
JBUF_UNLOCK (priv);
gst_pad_push_event (priv->sinkpad, event);
@ -2323,15 +2331,17 @@ do_expected_timeout (GstRtpJitterBuffer * jitterbuffer, TimerData * timer,
/* calculate the timeout for the next retransmission attempt */
timer->rtx_retry += (priv->rtx_retry_timeout * GST_MSECOND);
if (timer->rtx_retry > (priv->rtx_retry_period * GST_MSECOND)) {
if (timer->rtx_retry + timer->rtx_delay >
(priv->rtx_retry_period * GST_MSECOND)) {
GST_DEBUG_OBJECT (jitterbuffer, "reschedule as LOST timer");
/* too many retransmission request, we now convert the timer
* to a lost timer */
timer->type = TIMER_TYPE_LOST;
timer->rtx_delay = 0;
timer->rtx_retry = 0;
}
reschedule_timer (jitterbuffer, timer, timer->seqnum,
timer->rtx_base + timer->rtx_retry);
timer->rtx_base + timer->rtx_retry, timer->rtx_delay);
return FALSE;
}