webrtcbin: GStreamer Bad Plugins 1.0 Plugins Reference Manual

webrtcbin

Properties

GstWebRTCPeerConnectionState	connection-state	Read
GstWebRTCICEConnectionState	ice-connection-state	Read
GstWebRTCICEGatheringState	ice-gathering-state	Read
GstWebRTCSessionDescription *	local-description	Read / Write
GstWebRTCSessionDescription *	remote-description	Read / Write
GstWebRTCSignalingState	signaling-state	Read
gchar *	stun-server	Read / Write
gchar *	turn-server	Read / Write

Signals

void	add-ice-candidate	Action
GstWebRTCRTPTransceiver*	add-transceiver	Action
void	create-answer	Action
void	create-offer	Action
void	get-stats	Action
GArray*	get-transceivers	Action
void	on-ice-candidate	Run Last
void	on-negotiation-needed	Run Last
void	set-local-description	Action
void	set-remote-description	Action
void	on-new-transceiver	Run Last

Types and Values

GstWebRTCBin

Object Hierarchy

    GObject
    ╰── GInitiallyUnowned
        ╰── GstObject
            ╰── GstElement
                ╰── GstBin
                    ╰── GstWebRTCBin

Implemented Interfaces

GstWebRTCBin implements GstChildProxy.

Description

Synopsis

Element Information

plugin	webrtc
author	Matthew Waters <matthew@centricular.com>
class	Filter/Network/WebRTC

Element Pads

name	sink_%u
direction	sink
presence	request
details	application/x-rtp

name	src_%u
direction	source
presence	sometimes
details	application/x-rtp

Functions

Types and Values

GstWebRTCBin

typedef struct _GstWebRTCBin GstWebRTCBin;

Property Details

The `“connection-state”` property

  “connection-state”         GstWebRTCPeerConnectionState

The overall connection state of this element.

Flags: Read

Default value: GST_WEBRTC_PEER_CONNECTION_STATE_NEW

The `“ice-connection-state”` property

  “ice-connection-state”     GstWebRTCICEConnectionState

The collective connection state of all ICETransport's.

Flags: Read

Default value: GST_WEBRTC_ICE_CONNECTION_STATE_NEW

The `“ice-gathering-state”` property

  “ice-gathering-state”      GstWebRTCICEGatheringState

The collective gathering state of all ICETransport's.

Flags: Read

Default value: GST_WEBRTC_ICE_GATHERING_STATE_NEW

The `“local-description”` property

  “local-description”        GstWebRTCSessionDescription *

The local SDP description to use for this connection.

Flags: Read / Write

The `“remote-description”` property

  “remote-description”       GstWebRTCSessionDescription *

The remote SDP description to use for this connection.

Flags: Read / Write

The `“signaling-state”` property

  “signaling-state”          GstWebRTCSignalingState

The signaling state of this element.

Flags: Read

Default value: GST_WEBRTC_SIGNALING_STATE_STABLE

The `“stun-server”` property

  “stun-server”              gchar *

The STUN server of the form stun://hostname:port.

Flags: Read / Write

Default value: NULL

The `“turn-server”` property

  “turn-server”              gchar *

The TURN server of the form turn(s)://username:password@host:port.

Flags: Read / Write

Default value: NULL

Signal Details

The `“add-ice-candidate”` signal

void
user_function (GstWebRTCBin *object,
               guint         ice-candidate,
               gchar        *arg2,
               gpointer      user_data)

Parameters

object	the GstWebRtcBin
ice-candidate	an ice candidate
user_data	user data set when the signal handler was connected.

Flags: Action

The `“add-transceiver”` signal

GstWebRTCRTPTransceiver*
user_function (GstWebRTCBin                    *object,
               GstWebRTCRTPTransceiverDirection direction,
               GstCaps                         *caps,
               gpointer                         user_data)

Parameters

object	the GstWebRtcBin
direction	the direction of the new transceiver
caps	the codec preferences for this transceiver.	[allow none]
user_data	user data set when the signal handler was connected.

Returns

the new GstWebRTCRTPTransceiver

Flags: Action

The `“create-answer”` signal

void
user_function (GstWebRTCBin *object,
               GstStructure *options,
               GstPromise   *promise,
               gpointer      user_data)

Parameters

object	the GstWebRtcBin
options	create-answer options
promise	a GstPromise which will contain the answer
user_data	user data set when the signal handler was connected.

Flags: Action

The `“create-offer”` signal

void
user_function (GstWebRTCBin *object,
               GstStructure *options,
               GstPromise   *promise,
               gpointer      user_data)

Parameters

object	the GstWebRtcBin
options	create-offer options
promise	a GstPromise which will contain the offer
user_data	user data set when the signal handler was connected.

Flags: Action

The `“get-stats”` signal

void
user_function (GstWebRTCBin *object,
               GstPad       *promise,
               GstPromise   *arg2,
               gpointer      user_data)

The promise will contain the result of retrieving the session statistics. The structure will be named 'application/x-webrtc-stats and contain the following based on the webrtc-stats spec available from https://www.w3.org/TR/webrtc-stats/. As the webrtc-stats spec is a draft and is constantly changing these statistics may be changed to fit with the latest spec.

Each field key is a unique identifer for each RTCStats (https://www.w3.org/TR/webrtc/rtcstats-dictionary) value (another GstStructure) in the RTCStatsReport (https://www.w3.org/TR/webrtc/rtcstatsreport-object). Each supported field in the RTCStats subclass is outlined below.

Each statistics structure contains the following values as defined by the RTCStats dictionary (https://www.w3.org/TR/webrtc/rtcstats-dictionary).

"timestamp" G_TYPE_DOUBLE timestamp the statistics were generated "type" GST_TYPE_WEBRTC_STATS_TYPE the type of statistics reported "id" G_TYPE_STRING unique identifier

RTCCodecStats supported fields (https://w3c.github.io/webrtc-stats/codec-dict*)

"payload-type" G_TYPE_UINT the rtp payload number in use "clock-rate" G_TYPE_UINT the rtp clock-rate

RTCRTPStreamStats supported fields (https://w3c.github.io/webrtc-stats/streamstats-dict*)

"ssrc" G_TYPE_STRING the rtp sequence src in use "transport-id" G_TYPE_STRING identifier for the associated RTCTransportStats for this stream "codec-id" G_TYPE_STRING identifier for the associated RTCCodecStats for this stream "fir-count" G_TYPE_UINT FIR requests received by the sender (only for local statistics) "pli-count" G_TYPE_UINT PLI requests received by the sender (only for local statistics) "nack-count" G_TYPE_UINT NACK requests received by the sender (only for local statistics)

RTCReceivedStreamStats supported fields (https://w3c.github.io/webrtc-stats/receivedrtpstats-dict*)

"packets-received" G_TYPE_UINT64 number of packets received (only for local inbound) "bytes-received" G_TYPE_UINT64 number of bytes received (only for local inbound) "packets-lost" G_TYPE_UINT number of packets lost "jitter" G_TYPE_DOUBLE packet jitter measured in secondss

RTCInboundRTPStreamStats supported fields (https://w3c.github.io/webrtc-stats/inboundrtpstats-dict*)

"remote-id" G_TYPE_STRING identifier for the associated RTCRemoteOutboundRTPSTreamStats

RTCRemoteInboundRTPStreamStats supported fields (https://w3c.github.io/webrtc-stats/remoteinboundrtpstats-dict*)

"local-id" G_TYPE_STRING identifier for the associated RTCOutboundRTPSTreamStats "round-trip-time" G_TYPE_DOUBLE round trip time of packets measured in seconds

RTCSentRTPStreamStats supported fields (https://w3c.github.io/webrtc-stats/sentrtpstats-dict*)

"packets-sent" G_TYPE_UINT64 number of packets sent (only for local outbound) "bytes-sent" G_TYPE_UINT64 number of packets sent (only for local outbound)

RTCOutboundRTPStreamStats supported fields (https://w3c.github.io/webrtc-stats/outboundrtpstats-dict*)

"remote-id" G_TYPE_STRING identifier for the associated RTCRemoteInboundRTPSTreamStats

RTCRemoteOutboundRTPStreamStats supported fields (https://w3c.github.io/webrtc-stats/remoteoutboundrtpstats-dict*)

"local-id" G_TYPE_STRING identifier for the associated RTCInboundRTPSTreamStats

Parameters

object	the GstWebRtcBin
promise	a GstPromise for the result
user_data	user data set when the signal handler was connected.

Flags: Action

The `“get-transceivers”` signal

GArray*
user_function (GstWebRTCBin *object,
               gpointer      user_data)

Parameters

object	the GstWebRtcBin
user_data	user data set when the signal handler was connected.

Returns

a GArray of GstWebRTCRTPTransceivers

Flags: Action

The `“on-ice-candidate”` signal

void
user_function (GstWebRTCBin *object,
               guint         candidate,
               gchar        *arg2,
               gpointer      user_data)

Parameters

object	the GstWebRtcBin
candidate	the ICE candidate
user_data	user data set when the signal handler was connected.

Flags: Run Last

The `“on-negotiation-needed”` signal

void
user_function (GstWebRTCBin *object,
               gpointer      user_data)

Parameters

object	the GstWebRtcBin
user_data	user data set when the signal handler was connected.

Flags: Run Last

The `“set-local-description”` signal

void
user_function (GstWebRTCBin                *object,
               GstWebRTCSessionDescription *type,
               GstPromise                  *sdp,
               gpointer                     user_data)

Parameters

object	the GstWebRtcBin
type	the type of description being set
sdp	a GstSDPMessage description
promise (allow-none)	a GstPromise to be notified when it's set
user_data	user data set when the signal handler was connected.

Flags: Action

The `“set-remote-description”` signal

void
user_function (GstWebRTCBin                *object,
               GstWebRTCSessionDescription *type,
               GstPromise                  *sdp,
               gpointer                     user_data)

Parameters

object	the GstWebRtcBin
type	the type of description being set
sdp	a GstSDPMessage description
promise (allow-none)	a GstPromise to be notified when it's set
user_data	user data set when the signal handler was connected.

Flags: Action

The `“on-new-transceiver”` signal

void
user_function (GstWebRTCBin            *object,
               GstWebRTCRTPTransceiver *candidate,
               gpointer                 user_data)

Parameters

object	the GstWebRtcBin
candidate	the new GstWebRTCRTPTransceiver
user_data	user data set when the signal handler was connected.

Flags: Run Last

webrtcbin

Properties

Signals

Types and Values

Object Hierarchy

Implemented Interfaces

Description

Synopsis

Element Information

Element Pads

Functions

Types and Values

GstWebRTCBin

Property Details

The “connection-state” property

The “ice-connection-state” property

The “ice-gathering-state” property

The “local-description” property

The “remote-description” property

The “signaling-state” property

The “stun-server” property

The “turn-server” property

Signal Details

The “add-ice-candidate” signal

Parameters

The “add-transceiver” signal

Parameters

Returns

The “create-answer” signal

Parameters

The “create-offer” signal

Parameters

The “get-stats” signal

Parameters

The “get-transceivers” signal

Parameters

Returns

The “on-ice-candidate” signal

Parameters

The “on-negotiation-needed” signal

Parameters

The “set-local-description” signal

Parameters

The “set-remote-description” signal

Parameters

The “on-new-transceiver” signal

Parameters

The `“connection-state”` property

The `“ice-connection-state”` property

The `“ice-gathering-state”` property

The `“local-description”` property

The `“remote-description”` property

The `“signaling-state”` property

The `“stun-server”` property

The `“turn-server”` property

The `“add-ice-candidate”` signal

The `“add-transceiver”` signal

The `“create-answer”` signal

The `“create-offer”` signal

The `“get-stats”` signal

The `“get-transceivers”` signal

The `“on-ice-candidate”` signal

The `“on-negotiation-needed”` signal

The `“set-local-description”` signal

The `“set-remote-description”` signal

The `“on-new-transceiver”` signal