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jitterbuffer: add properties

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Add properties to control retransmission parameters
This commit is contained in:
Wim Taymans 2013-08-02 14:19:54 +02:00
parent a8c7ff7489
commit e9ad5126db
1 changed files with 100 additions and 9 deletions
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97
gst/rtpmanager/gstrtpjitterbuffer.c
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@ -89,6 +89,9 @@ enum
#define DEFAULT_DO_LOST FALSE
#define DEFAULT_MODE RTP_JITTER_BUFFER_MODE_SLAVE
#define DEFAULT_PERCENT 0
#define DEFAULT_DO_RETRANSMISSION FALSE
#define DEFAULT_RTX_DELAY 20
#define DEFAULT_RTX_DELAY_REORDER 3
enum
{
@ -99,6 +102,9 @@ enum
PROP_DO_LOST,
PROP_MODE,
PROP_PERCENT,
PROP_DO_RETRANSMISSION,
PROP_RTX_DELAY,
PROP_RTX_DELAY_REORDER,
PROP_LAST
};
@ -141,6 +147,9 @@ struct _GstRtpJitterBufferPrivate
gboolean drop_on_latency;
gint64 ts_offset;
gboolean do_lost;
gboolean do_retransmission;
gint rtx_delay;
gint rtx_delay_reorder;
/* the last seqnum we pushed out */
guint32 last_popped_seqnum;
@ -384,6 +393,52 @@ gst_rtp_jitter_buffer_class_init (GstRtpJitterBufferClass * klass)
g_param_spec_int ("percent", "percent",
"The buffer filled percent", 0, 100,
0, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
/**
* GstRtpJitterBuffer::do-retransmission:
*
* Send out a GstRTPRetransmission event upstream when a packet is considered
* late and should be retransmitted.
*
* Since: 1.2
*/
g_object_class_install_property (gobject_class, PROP_DO_RETRANSMISSION,
g_param_spec_boolean ("do-retransmission", "Do Retransmission",
"Send retransmission events upstream when a packet is late",
DEFAULT_DO_RETRANSMISSION,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/**
* GstRtpJitterBuffer::rtx-delay:
*
* When a packet did not arrive at the expected time, wait this extra amount
* of time before sending a retransmission event.
*
* When -1 is used, the max jitter will be used as extra delay.
*
* Since: 1.2
*/
g_object_class_install_property (gobject_class, PROP_RTX_DELAY,
g_param_spec_int ("rtx-delay", "RTX Delay",
"Extra time in ms to wait before sending retransmission "
"event (-1 automatic)", -1, G_MAXUINT, DEFAULT_RTX_DELAY,
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
/**
* GstRtpJitterBuffer::rtx-delay-reorder:
*
* Assume that a retransmission event should be sent when we see
* this much packet reordering.
*
* When -1 is used, the value will be estimated based on observed packet
* reordering.
*
* Since: 1.2
*/
g_object_class_install_property (gobject_class, PROP_RTX_DELAY_REORDER,
g_param_spec_int ("rtx-delay-reorder", "RTX Delay Reorder",
"Sending retransmission event when this much reordering (-1 automatic)",
-1, G_MAXUINT, DEFAULT_RTX_DELAY_REORDER,
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
/**
* GstRtpJitterBuffer::request-pt-map:
* @buffer: the object which received the signal
@ -494,8 +549,11 @@ gst_rtp_jitter_buffer_init (GstRtpJitterBuffer * jitterbuffer)
priv->latency_ns = priv->latency_ms * GST_MSECOND;
priv->drop_on_latency = DEFAULT_DROP_ON_LATENCY;
priv->do_lost = DEFAULT_DO_LOST;
priv->timers = g_array_new (FALSE, TRUE, sizeof (TimerData));
priv->do_retransmission = DEFAULT_DO_RETRANSMISSION;
priv->rtx_delay = DEFAULT_RTX_DELAY;
priv->rtx_delay_reorder = DEFAULT_RTX_DELAY_REORDER;
priv->timers = g_array_new (FALSE, TRUE, sizeof (TimerData));
priv->jbuf = rtp_jitter_buffer_new ();
g_mutex_init (&priv->jbuf_lock);
g_cond_init (&priv->jbuf_cond);
@ -1474,6 +1532,9 @@ update_timers (GstRtpJitterBuffer * jitterbuffer, guint16 seqnum,
TimerData *timer = NULL;
gint i, len;
if (!priv->do_retransmission)
return;
/* go through all timers and unschedule the ones with a large gap, also find
* the timer for the seqnum */
len = priv->timers->len;
@ -1492,7 +1553,7 @@ update_timers (GstRtpJitterBuffer * jitterbuffer, guint16 seqnum,
if (gap == 0) {
/* the timer for the current seqnum */
timer = test;
} else if (gap > 5) {
} else if (gap > priv->rtx_delay_reorder) {
/* max gap, we exceeded the max reorder distance and we don't expect the
* missing packet to be this reordered */
reschedule_timer (jitterbuffer, test, test->seqnum, -1);
@ -1503,7 +1564,7 @@ update_timers (GstRtpJitterBuffer * jitterbuffer, guint16 seqnum,
GstClockTime expected;
/* calculate expected arrival time of the next seqnum */
expected = dts + priv->packet_spacing + 20 * GST_MSECOND;
expected = dts + priv->packet_spacing + (priv->rtx_delay * GST_MSECOND);
/* and update/install timer for next seqnum */
if (timer)
reschedule_timer (jitterbuffer, timer, priv->next_in_seqnum, expected);
@ -2664,6 +2725,21 @@ gst_rtp_jitter_buffer_set_property (GObject * object,
rtp_jitter_buffer_set_mode (priv->jbuf, g_value_get_enum (value));
JBUF_UNLOCK (priv);
break;
case PROP_DO_RETRANSMISSION:
JBUF_LOCK (priv);
priv->do_retransmission = g_value_get_boolean (value);
JBUF_UNLOCK (priv);
break;
case PROP_RTX_DELAY:
JBUF_LOCK (priv);
priv->rtx_delay = g_value_get_int (value);
JBUF_UNLOCK (priv);
break;
case PROP_RTX_DELAY_REORDER:
JBUF_LOCK (priv);
priv->rtx_delay_reorder = g_value_get_int (value);
JBUF_UNLOCK (priv);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
@ -2720,6 +2796,21 @@ gst_rtp_jitter_buffer_get_property (GObject * object,
JBUF_UNLOCK (priv);
break;
}
case PROP_DO_RETRANSMISSION:
JBUF_LOCK (priv);
g_value_set_boolean (value, priv->do_retransmission);
JBUF_UNLOCK (priv);
break;
case PROP_RTX_DELAY:
JBUF_LOCK (priv);
g_value_set_int (value, priv->rtx_delay);
JBUF_UNLOCK (priv);
break;
case PROP_RTX_DELAY_REORDER:
JBUF_LOCK (priv);
g_value_set_int (value, priv->rtx_delay_reorder);
JBUF_UNLOCK (priv);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;