janus_callbacks Struct Reference

Callbacks to contact the Janus core. More...

#include <plugin.h>

Data Fields
int(*const	push_event )(janus_plugin_session *handle, janus_plugin *plugin, const char *transaction, json_t *message, json_t *jsep)
	Callback to push events/messages to a peer.
void(*const	relay_rtp )(janus_plugin_session *handle, janus_plugin_rtp *packet)
	Callback to relay RTP packets to a peer.
void(*const	relay_rtcp )(janus_plugin_session *handle, janus_plugin_rtcp *packet)
	Callback to relay RTCP messages to a peer.
void(*const	relay_data )(janus_plugin_session *handle, janus_plugin_data *packet)
	Callback to relay SCTP/DataChannel messages to a peer.
void(*const	send_pli )(janus_plugin_session *handle)
	Helper to ask for a keyframe via a RTCP PLI to all video streams.
void(*const	send_pli_stream )(janus_plugin_session *handle, int mindex)
	Helper to ask for a keyframe via a RTCP PLI to a specific video stream.
void(*const	send_remb )(janus_plugin_session *handle, guint32 bitrate)
	Helper to ask for a keyframe via a RTCP PLI.
void(*const	close_pc )(janus_plugin_session *handle)
	Callback to ask the core to close a WebRTC PeerConnection.
void(*const	end_session )(janus_plugin_session *handle)
	Callback to ask the core to get rid of a plugin/gateway session.
gboolean(*const	events_is_enabled )(void)
	Callback to check whether the event handlers mechanism is enabled.
void(*const	notify_event )(janus_plugin *plugin, janus_plugin_session *handle, json_t *event)
	Callback to notify an event to the registered and subscribed event handlers.
gboolean(*const	auth_is_signed )(void)
	Method to check whether the core is using signed tokens.
gboolean(*const	auth_is_signature_valid )(janus_plugin *plugin, const char *token)
	Method to check whether a signed token is valid.
gboolean(*const	auth_signature_contains )(janus_plugin *plugin, const char *token, const char *descriptor)
	Method to verify a signed token grants access to a descriptor.

Detailed Description

Callbacks to contact the Janus core.

Field Documentation

auth_is_signature_valid

gboolean(*const janus_callbacks::auth_is_signature_valid) (janus_plugin *plugin, const char *token)

Method to check whether a signed token is valid.

Note

accepts only tokens with the plugin identifier as realm

Parameters

[in]

token

The token to validate

Returns

TRUE if the signature is valid and not expired, FALSE otherwise

auth_is_signed

gboolean(*const janus_callbacks::auth_is_signed) (void)

Method to check whether the core is using signed tokens.

Returns

TRUE if signed tokens are in use, FALSE otherwise

auth_signature_contains

gboolean(*const janus_callbacks::auth_signature_contains) (janus_plugin *plugin, const char *token, const char *descriptor)

Method to verify a signed token grants access to a descriptor.

Note

accepts only tokens with the plugin identifier as realm

Parameters

[in]	token	The token to validate
[in]	desc	The descriptor to search for

Returns

TRUE if the token is valid, not expired and contains the descriptor, FALSE otherwise

close_pc

void(*const janus_callbacks::close_pc) (janus_plugin_session *handle)

Callback to ask the core to close a WebRTC PeerConnection.

Note

A call to this method will result in the core invoking the hangup_media callback on this plugin when done, but only if a PeerConnection had been created or was in the process of being negotiated (SDP exchanged)

Parameters

[in]

handle

The plugin/gateway session that the PeerConnection is related to

end_session

void(*const janus_callbacks::end_session) (janus_plugin_session *handle)

Callback to ask the core to get rid of a plugin/gateway session.

Note

A call to this method will result in the core invoking the destroy_session callback on this plugin when done

Parameters

[in]

handle

The plugin/gateway session to get rid of

events_is_enabled

gboolean(*const janus_callbacks::events_is_enabled) (void)

Callback to check whether the event handlers mechanism is enabled.

Returns

TRUE if it is, FALSE if it isn't (which means notify_event should NOT be called)

notify_event

void(*const janus_callbacks::notify_event) (janus_plugin *plugin, janus_plugin_session *handle, json_t *event)

Callback to notify an event to the registered and subscribed event handlers.

Note

Don't unref the event object, the core will do that for you

Parameters

[in]	plugin	The plugin originating the event
[in]	handle	The plugin/gateway session originating the event, if any
[in]	event	The event to notify as a Jansson json_t object

push_event

int(*const janus_callbacks::push_event) (janus_plugin_session *handle, janus_plugin *plugin, const char *transaction, json_t *message, json_t *jsep)

Callback to push events/messages to a peer.

Note

The Janus core increases the references to both the message and jsep json_t objects. This means that you'll have to decrease your own reference yourself with a json_decref after calling push_event.

Parameters

[in]	handle	The plugin/gateway session used for this peer
[in]	plugin	The plugin instance that is sending the message/event
[in]	transaction	The transaction identifier this message refers to
[in]	message	The json_t object containing the JSON message
[in]	jsep	The json_t object containing the JSEP type, the SDP attached to the message/event, if any (offer/answer), and whether this is an update

relay_data

void(*const janus_callbacks::relay_data) (janus_plugin_session *handle, janus_plugin_data *packet)

Callback to relay SCTP/DataChannel messages to a peer.

Note

The protocol is only used for the first message sent on a new data channel, as it will be used to create it; it will be ignored for following messages on the same label, so you can set NULL after that

Parameters

[in]	handle	The plugin/gateway session that will be used for this peer
[in]	packet	The message data and related info

relay_rtcp

void(*const janus_callbacks::relay_rtcp) (janus_plugin_session *handle, janus_plugin_rtcp *packet)

Callback to relay RTCP messages to a peer.

Parameters

[in]	handle	The plugin/gateway session that will be used for this peer
[in]	packet	The RTCP packet and related data

relay_rtp

void(*const janus_callbacks::relay_rtp) (janus_plugin_session *handle, janus_plugin_rtp *packet)

Callback to relay RTP packets to a peer.

Parameters

[in]	handle	The plugin/gateway session used for this peer
[in]	packet	The RTP packet and related data

send_pli

void(*const janus_callbacks::send_pli) (janus_plugin_session *handle)

Helper to ask for a keyframe via a RTCP PLI to all video streams.

Note

This is a shortcut, as it is also possible to do the same by crafting an RTCP PLI message manually, and passing it to the core via relay_rtcp

Parameters

[in]

handle

The plugin/gateway session that will be used for this peer

send_pli_stream

void(*const janus_callbacks::send_pli_stream) (janus_plugin_session *handle, int mindex)

Helper to ask for a keyframe via a RTCP PLI to a specific video stream.

Note

This is a shortcut, as it is also possible to do the same by crafting an RTCP PLI message manually, and passing it to the core via relay_rtcp

Parameters

[in]	handle	The plugin/gateway session that will be used for this peer
[in]	mindex	Index of the stream to send the PLI to (relative to the SDP; passing -1 will send it to the first video stream in the SDP)

send_remb

void(*const janus_callbacks::send_remb) (janus_plugin_session *handle, guint32 bitrate)

Helper to ask for a keyframe via a RTCP PLI.

Note

This is a shortcut, as it is also possible to do the same by crafting an RTCP REMB message manually, and passing it to the core via relay_rtcp

Parameters

[in]	handle	The plugin/gateway session that will be used for this peer
[in]	bitrate	The bitrate value to send in the REMB message

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The documentation for this struct was generated from the following file:

• plugin.h