rtprtxsend

rtprtxsend

Properties

guint max-size-time Read / Write
guint max-size-packets Read / Write
guint num-rtx-requests Read
guint num-rtx-packets Read
GstStructure * payload-type-map Read / Write
GstStructure * ssrc-map Write

Types and Values

struct GstRtpRtxSend

Object Hierarchy

    GObject
    ╰── GInitiallyUnowned
        ╰── GstObject
            ╰── GstElement
                ╰── GstRtpRtxSend

Description

See GstRtpRtxReceive for examples

The purpose of the sender RTX object is to keep a history of RTP packets up to a configurable limit (max-size-time or max-size-packets). It will listen for upstream custom retransmission events (GstRTPRetransmissionRequest) that comes from downstream (GstRtpSession). When receiving a request it will look up the requested seqnum in its list of stored packets. If the packet is available, it will create a RTX packet according to RFC 4588 and send this as an auxiliary stream. RTX is SSRC-multiplexed

Synopsis

Element Information

plugin

 rtpmanager

author

 Julien Isorce <julien.isorce@collabora.co.uk>

class

 Codec

Element Pads

name

 sink

direction

 sink

presence

 always

details

 application/x-rtp, clock-rate=(int)[ 1, 2147483647 ]

name

 src

direction

 source

presence

 always

details

 application/x-rtp

Functions

Types and Values

struct GstRtpRtxSend

struct GstRtpRtxSend;

Property Details

The “max-size-time” property

  “max-size-time”            guint

Amount of ms to queue (0 = unlimited).

Flags: Read / Write

Default value: 0

The “max-size-packets” property

  “max-size-packets”         guint

Amount of packets to queue (0 = unlimited).

Flags: Read / Write

Allowed values: <= 32767

Default value: 100

The “num-rtx-requests” property

  “num-rtx-requests”         guint

Number of retransmission events received.

Flags: Read

Default value: 0

The “num-rtx-packets” property

  “num-rtx-packets”          guint

Number of retransmission packets sent.

Flags: Read

Default value: 0

The “payload-type-map” property

  “payload-type-map”         GstStructure *

Map of original payload types to their retransmission payload types.

Flags: Read / Write

The “ssrc-map” property

  “ssrc-map”                 GstStructure *

Map of SSRCs to their retransmission SSRCs for SSRC-multiplexed mode (default = random).

Flags: Write

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