The WebRTC API provides functions for real-time audio/video communication between peers. It supports WebRTC as a native API based on GStreamer multimedia framework.

Required Header

#include <webrtc.h>

Overview

The WebRTC API provides functions to communicate with the remote peer using multimedia sources and generic data. The multimedia sources include audio/video stream from microphone, camera or media file. The generic data includes string or byte data. This API set allows you to:

add/remove/mute/pause the media source
create/destroy data channel and send/receive data via the channel
set display surface to render the received video data
start/stop the state of the handle
make negotiation with the remote peer
query the various states of the handle including session negotiation
get notified about various changes via callbacks

State Transitions

FUNCTION	PRE-STATE	POST-STATE	SYNC TYPE
webrtc_create()	NONE	IDLE	SYNC
webrtc_destroy()	IDLE/NEGOTIATING/PLAYING	NONE	SYNC
webrtc_start()	IDLE	NEGOTIATING	ASYNC
webrtc_stop()	NEGOTIATING/PLAYING	IDLE	ASYNC
webrtc_set_remote_description()	NEGOTIATING	PLAYING*	ASYNC
webrtc_set_local_description()	NEGOTIATING	PLAYING*	ASYNC
webrtc_add_ice_candidate()	NEGOTIATING	PLAYING*	ASYNC

(*) The transition from the NEGOTIATING state to the PLAYING state will be processed after finishing all the negotiation.

Callback(Event) Operations

The callback mechanism is used to notify the application about significant webrtc events.

REGISTER	UNREGISTER	CALLBACK	DESCRIPTION
webrtc_set_state_changed_cb()	webrtc_unset_state_changed_cb()	webrtc_state_changed_cb()	This callback is used to notify that the WebRTC state has changed
webrtc_set_error_cb()	webrtc_unset_error_cb()	webrtc_error_cb()	This callback is used to notify that an error has occurred
webrtc_set_negotiation_needed_cb()	webrtc_unset_negotiation_needed_cb()	webrtc_negotiation_needed_cb()	This callback is used to notify that the WebRTC requires session negotiation
webrtc_set_peer_connection_state_change_cb()	webrtc_unset_peer_connection_state_change_cb()	webrtc_peer_connection_state_change_cb()	This callback is used to notify that the WebRTC peer connection state has changed
webrtc_set_signaling_state_change_cb()	webrtc_unset_signaling_state_change_cb()	webrtc_signaling_state_change_cb()	This callback is used to notify that the WebRTC signaling state has changed
webrtc_set_ice_gathering_state_change_cb()	webrtc_unset_ice_gathering_state_change_cb()	webrtc_ice_gathering_state_change_cb()	This callback is used to notify that the WebRTC ICE gathering state has changed
webrtc_set_ice_connection_state_change_cb()	webrtc_unset_ice_connection_state_change_cb()	webrtc_ice_connection_state_change_cb()	This callback is used to notify that the WebRTC ICE connection state has changed

Foreach Operations

FOREACH	CALLBACK	DESCRIPTION
webrtc_foreach_turn_server()	webrtc_turn_server_cb()	It retrieves the added TURN server one by one

Related Features

This API is related with the following features:

http://tizen.org/feature/network.wifi
http://tizen.org/feature/network.telephony
http://tizen.org/feature/network.ethernet

It is recommended to design feature related codes in your application for reliability.
You can check if a device supports the related features for this API by using System Information, thereby controlling the procedure of your application.
To ensure your application is only running on the device with specific features, please define the features in your manifest file using the manifest editor in the SDK.
More details on featuring your application can be found from Feature Element.

Functions
int	webrtc_set_error_cb (webrtc_h webrtc, webrtc_error_cb callback, void *user_data)
	Sets a callback function to be invoked when an asynchronous operation error occurs.
int	webrtc_unset_error_cb (webrtc_h webrtc)
	Unsets the error callback function.
int	webrtc_create (webrtc_h *webrtc)
	Creates an instance of WebRTC.
int	webrtc_start (webrtc_h webrtc)
	Starts the WebRTC.
int	webrtc_stop (webrtc_h webrtc)
	Stops the WebRTC.
int	webrtc_destroy (webrtc_h webrtc)
	Destroys the WebRTC.
int	webrtc_set_state_changed_cb (webrtc_h webrtc, webrtc_state_changed_cb callback, void *user_data)
	Sets a callback function to be invoked when the WebRTC state is changed.
int	webrtc_unset_state_changed_cb (webrtc_h webrtc)
	Unsets the state changed callback function.
int	webrtc_get_state (webrtc_h webrtc, webrtc_state_e *state)
	Gets the WebRTC state.
int	webrtc_set_stun_server (webrtc_h webrtc, const char *stun_server)
	Sets a STUN server URL.
int	webrtc_get_stun_server (webrtc_h webrtc, char **stun_server)
	Gets the STUN server URL.
int	webrtc_add_turn_server (webrtc_h webrtc, const char *turn_server)
	Adds a TURN server URL.
int	webrtc_foreach_turn_server (webrtc_h webrtc, webrtc_turn_server_cb callback, void *user_data)
	Retrieves all the TURN server URLs.
int	webrtc_set_ice_transport_policy (webrtc_h webrtc, webrtc_ice_transport_policy_e policy)
	Sets a ICE transport policy that represents which candidates the ICE Agent is allowed to use.
int	webrtc_get_ice_transport_policy (webrtc_h webrtc, webrtc_ice_transport_policy_e *policy)
	Gets the ICE transport policy.
int	webrtc_set_peer_connection_state_change_cb (webrtc_h webrtc, webrtc_peer_connection_state_change_cb callback, void *user_data)
	Sets a callback function to be invoked when the WebRTC peer connection state is changed.
int	webrtc_unset_peer_connection_state_change_cb (webrtc_h webrtc)
	Unsets the peer connection state change callback function.
int	webrtc_get_peer_connection_state (webrtc_h webrtc, webrtc_peer_connection_state_e *state)
	Gets the peer connection state.
int	webrtc_set_signaling_state_change_cb (webrtc_h webrtc, webrtc_signaling_state_change_cb callback, void *user_data)
	Sets a callback function to be invoked when the WebRTC signaling state is changed.
int	webrtc_unset_signaling_state_change_cb (webrtc_h webrtc)
	Unsets the signaling state change callback function.
int	webrtc_get_signaling_state (webrtc_h webrtc, webrtc_signaling_state_e *state)
	Gets the signaling state.
int	webrtc_set_ice_gathering_state_change_cb (webrtc_h webrtc, webrtc_ice_gathering_state_change_cb callback, void *user_data)
	Sets a callback function to be invoked when the WebRTC ICE gathering state is changed.
int	webrtc_unset_ice_gathering_state_change_cb (webrtc_h webrtc)
	Unsets the ICE gathering state change callback function.
int	webrtc_get_ice_gathering_state (webrtc_h webrtc, webrtc_ice_gathering_state_e *state)
	Gets the ICE gathering state.
int	webrtc_set_ice_connection_state_change_cb (webrtc_h webrtc, webrtc_ice_connection_state_change_cb callback, void *user_data)
	Sets a callback function to be invoked when the WebRTC ICE connection state is changed.
int	webrtc_unset_ice_connection_state_change_cb (webrtc_h webrtc)
	Unsets the ICE connection state change callback function.
int	webrtc_get_ice_connection_state (webrtc_h webrtc, webrtc_ice_connection_state_e *state)
	Gets the ICE connection state.
int	webrtc_set_negotiation_needed_cb (webrtc_h webrtc, webrtc_negotiation_needed_cb callback, void *user_data)
	Sets a negotiation needed callback function to be invoked when a change has occurred which requires session negotiation.
int	webrtc_unset_negotiation_needed_cb (webrtc_h webrtc)
	Unsets the negotiation needed callback function.
int	webrtc_set_ice_candidate_cb (webrtc_h webrtc, webrtc_ice_candidate_cb callback, void *user_data)
	Sets an ICE candidate callback function to be invoked when the WebRTC needs to send the ICE candidate message to the remote peer.
int	webrtc_unset_ice_candidate_cb (webrtc_h webrtc)
	Unsets the ice candidate callback function.
int	webrtc_create_offer (webrtc_h webrtc, bundle options, char *offer)
	Creates SDP offer to start a new WebRTC connection to a remote peer.
int	webrtc_create_answer (webrtc_h webrtc, bundle options, char *answer)
	Creates SDP answer to an offer received from a remote peer during the negotiation of a WebRTC connection.
int	webrtc_create_offer_async (webrtc_h webrtc, bundle options, webrtc_session_description_created_cb callback, void user_data)
	Creates SDP offer asynchronously to start a new WebRTC connection to a remote peer.
int	webrtc_create_answer_async (webrtc_h webrtc, bundle options, webrtc_session_description_created_cb callback, void user_data)
	Creates SDP answer asynchronously to an offer received from a remote peer during the negotiation of a WebRTC connection.
int	webrtc_set_local_description (webrtc_h webrtc, const char *description)
	Sets the session description for a local peer associated with a WebRTC connection.
int	webrtc_set_remote_description (webrtc_h webrtc, const char *description)
	Sets the session description of the remote peer's current offer or answer.
int	webrtc_add_ice_candidate (webrtc_h webrtc, const char *candidate)
	Adds a new ICE candidate from the remote peer over its signaling channel.
int	webrtc_set_track_added_cb (webrtc_h webrtc, webrtc_track_added_cb callback, void *user_data)
	Sets a track added callback function to be invoked when a new track has been added to the WebRTC.
int	webrtc_unset_track_added_cb (webrtc_h webrtc)
	Unsets the track added callback function.
Typedefs
typedef void *	webrtc_h
	WebRTC handle type.
typedef void(*	webrtc_error_cb )(webrtc_h webrtc, webrtc_error_e error, webrtc_state_e state, void *user_data)
	Called when an error occurs.
typedef void(*	webrtc_state_changed_cb )(webrtc_h webrtc, webrtc_state_e previous, webrtc_state_e current, void *user_data)
	Called when the WebRTC state is changed.
typedef void(*	webrtc_session_description_created_cb )(webrtc_h webrtc, const char description, void user_data)
	Called when the session description is created.
typedef void(*	webrtc_peer_connection_state_change_cb )(webrtc_h webrtc, webrtc_peer_connection_state_e state, void *user_data)
	Called when the WebRTC peer connection state is changed.
typedef void(*	webrtc_signaling_state_change_cb )(webrtc_h webrtc, webrtc_signaling_state_e state, void *user_data)
	Called when the WebRTC signaling state is changed.
typedef void(*	webrtc_ice_gathering_state_change_cb )(webrtc_h webrtc, webrtc_ice_gathering_state_e state, void *user_data)
	Called when the WebRTC ICE gathering state is changed.
typedef void(*	webrtc_ice_connection_state_change_cb )(webrtc_h webrtc, webrtc_ice_connection_state_e state, void *user_data)
	Called when the WebRTC ICE connection state is changed.
typedef bool(*	webrtc_turn_server_cb )(const char turn_server, void user_data)
	Called iteratively to inform all the TURN server URLs.
typedef void(*	webrtc_negotiation_needed_cb )(webrtc_h webrtc, void *user_data)
	Called when the WebRTC needs session negotiation.
typedef void(*	webrtc_ice_candidate_cb )(webrtc_h webrtc, const char candidate, void user_data)
	Called when the WebRTC needs to send the ICE candidate message to the remote peer through the signaling channel.
typedef void(*	webrtc_track_added_cb )(webrtc_h webrtc, webrtc_media_type_e type, unsigned int track_id, void *user_data)
	Called when a new track has been added to the WebRTC pipeline after the negotiation.

Typedef Documentation

typedef void(* webrtc_error_cb)(webrtc_h webrtc, webrtc_error_e error, webrtc_state_e state, void *user_data)

Called when an error occurs.

The following error codes can be received:
WEBRTC_ERROR_INVALID_OPERATION
WEBRTC_ERROR_CONNECTION_FAILED
WEBRTC_ERROR_STREAM_FAILED
WEBRTC_ERROR_RESOURCE_FAILED
WEBRTC_ERROR_RESOURCE_CONFLICT

Since :: 6.5

Remarks:: The webrtc is the same object for which the callback was set.
The webrtc should not be released.

Parameters:

[in]	webrtc	WebRTC handle
[in]	error	The error code
[in]	state	The current state of the WebRTC handle
[in]	user_data	The user data passed from the callback registration function

See also:: webrtc_set_error_cb(); webrtc_unset_error_cb()

typedef void* webrtc_h

WebRTC handle type.

Since :: 6.5

typedef void(* webrtc_ice_candidate_cb)(webrtc_h webrtc, const char *candidate, void *user_data)

Called when the WebRTC needs to send the ICE candidate message to the remote peer through the signaling channel.

Since :: 6.5

Remarks:: The webrtc is the same object for which the callback was set.
The webrtc should not be released.
The candidate can be used only in the callback. To use outside, make a copy.
It will be {"ice":{"candidate":"...", "sdpMLineIndex":0 or 1 or ...}}.

Parameters:

[in]	webrtc	WebRTC handle
[in]	candidate	The ICE candidate message
[in]	user_data	The user data passed from the callback registration function

Postcondition:: candidate must be sent to the remote peer via the signaling channel.

See also:: webrtc_set_ice_candidate_cb(); webrtc_unset_ice_candidate_cb()

typedef void(* webrtc_ice_connection_state_change_cb)(webrtc_h webrtc, webrtc_ice_connection_state_e state, void *user_data)

Called when the WebRTC ICE connection state is changed.

Since :: 6.5

Remarks:: The webrtc is the same object for which the callback was set.
The webrtc should not be released.

Parameters:

[in]	webrtc	WebRTC handle
[in]	state	The ICE connection state
[in]	user_data	The user data passed from the callback registration function

See also:: webrtc_set_ice_connection_state_change_cb(); webrtc_unset_ice_connection_state_change_cb()

typedef void(* webrtc_ice_gathering_state_change_cb)(webrtc_h webrtc, webrtc_ice_gathering_state_e state, void *user_data)

Called when the WebRTC ICE gathering state is changed.

Since :: 6.5

Remarks:: The webrtc is the same object for which the callback was set.
The webrtc should not be released.

Parameters:

[in]	webrtc	WebRTC handle
[in]	state	The ICE gathering state
[in]	user_data	The user data passed from the callback registration function

See also:: webrtc_set_ice_gathering_state_change_cb(); webrtc_unset_ice_gathering_state_change_cb()

typedef void(* webrtc_negotiation_needed_cb)(webrtc_h webrtc, void *user_data)

Called when the WebRTC needs session negotiation.

Since :: 6.5

Remarks:: The webrtc is the same object for which the callback was set.
The webrtc should not be released.

Parameters:

[in]	webrtc	WebRTC handle
[in]	user_data	The user data passed from the callback registration function

See also:: webrtc_set_negotiation_needed_cb(); webrtc_unset_negotiation_needed_cb()

typedef void(* webrtc_peer_connection_state_change_cb)(webrtc_h webrtc, webrtc_peer_connection_state_e state, void *user_data)

Called when the WebRTC peer connection state is changed.

Since :: 6.5

Remarks:: The webrtc is the same object for which the callback was set.
The webrtc should not be released.

Parameters:

[in]	webrtc	WebRTC handle
[in]	state	The peer connection state
[in]	user_data	The user data passed from the callback registration function

See also:: webrtc_set_peer_connection_state_change_cb(); webrtc_unset_peer_connection_state_change_cb()

typedef void(* webrtc_session_description_created_cb)(webrtc_h webrtc, const char *description, void *user_data)

Called when the session description is created.

Since :: 6.5

Remarks:: The webrtc is the same object for which the callback was set.
The webrtc should not be released.
description is a JSON string.
It will be {"sdp":{"type":"offer or answer","sdp":"..."}}.
The description can be used only in the callback. To use outside, make a copy.

Parameters:

[in]	webrtc	WebRTC handle
[in]	description	The session description
[in]	user_data	The user data passed from the callback registration function

Postcondition:: description must be set as a local description by calling webrtc_set_local_description(); description must be sent to the remote peer via the signaling channel.

See also:: webrtc_create_offer_async(); webrtc_create_answer_async(); webrtc_set_local_description()

typedef void(* webrtc_signaling_state_change_cb)(webrtc_h webrtc, webrtc_signaling_state_e state, void *user_data)

Called when the WebRTC signaling state is changed.

Since :: 6.5

Remarks:: The webrtc is the same object for which the callback was set.
The webrtc should not be released.

Parameters:

[in]	webrtc	WebRTC handle
[in]	state	The signaling state
[in]	user_data	The user data passed from the callback registration function

See also:: webrtc_set_signaling_state_change_cb(); webrtc_unset_signaling_state_change_cb()

typedef void(* webrtc_state_changed_cb)(webrtc_h webrtc, webrtc_state_e previous, webrtc_state_e current, void *user_data)

Called when the WebRTC state is changed.

Since :: 6.5

Remarks:: The webrtc is the same object for which the callback was set.
The webrtc should not be released.

Parameters:

[in]	webrtc	WebRTC handle
[in]	previous	The previous state of the WebRTC handle
[in]	current	The current state of the WebRTC handle
[in]	user_data	The user data passed from the callback registration function

See also:: webrtc_set_state_changed_cb(); webrtc_unset_state_changed_cb()

typedef void(* webrtc_track_added_cb)(webrtc_h webrtc, webrtc_media_type_e type, unsigned int track_id, void *user_data)

Called when a new track has been added to the WebRTC pipeline after the negotiation.

Since :: 6.5

Remarks:: The webrtc is the same object for which the callback was set.
The webrtc should not be released.

Parameters:

[in]	webrtc	WebRTC handle
[in]	type	The media type
[in]	track_id	The track id
[in]	user_data	The user data passed from the callback registration function

See also:: webrtc_set_track_added_cb(); webrtc_unset_track_added_cb()

typedef bool(* webrtc_turn_server_cb)(const char *turn_server, void *user_data)

Called iteratively to inform all the TURN server URLs.

Since :: 6.5

Remarks:: The turn_server can be used only in the callback. To use outside, make a copy.

Parameters:

[in]	turn_server	The TURN server URL
[in]	user_data	The user data passed from the callback registration function

Returns:: true to continue with the next iteration of the loop, otherwise false to break out of the loop

See also:: webrtc_foreach_turn_server()

Enumeration Type Documentation

enum webrtc_error_e

Enumeration for WebRTC error.

Since :: 6.5

Enumerator:

WEBRTC_ERROR_NONE	Successful
WEBRTC_ERROR_NOT_SUPPORTED	Not supported
WEBRTC_ERROR_PERMISSION_DENIED	Permission denied
WEBRTC_ERROR_INVALID_PARAMETER	Invalid parameter
WEBRTC_ERROR_INVALID_OPERATION	Invalid operation
WEBRTC_ERROR_INVALID_STATE	Invalid state
WEBRTC_ERROR_CONNECTION_FAILED	Connection failed
WEBRTC_ERROR_STREAM_FAILED	Stream failed
WEBRTC_ERROR_RESOURCE_FAILED	Resource failed
WEBRTC_ERROR_RESOURCE_CONFLICT	Resource conflict

enum webrtc_ice_connection_state_e

Enumeration for WebRTC ICE connection state.

Since :: 6.5

Remarks:: It corresponds with the RTCIceConnectionState enum described in https://www.w3.org/TR/webrtc/#rtciceconnectionstate-enum.

Enumerator:

WEBRTC_ICE_CONNECTION_STATE_NEW	New
WEBRTC_ICE_CONNECTION_STATE_CHECKING	Checking
WEBRTC_ICE_CONNECTION_STATE_CONNECTED	Connected
WEBRTC_ICE_CONNECTION_STATE_COMPLETED	Completed
WEBRTC_ICE_CONNECTION_STATE_FAILED	Failed
WEBRTC_ICE_CONNECTION_STATE_DISCONNECTED	Disconnected
WEBRTC_ICE_CONNECTION_STATE_CLOSED	Closed

enum webrtc_ice_gathering_state_e

Enumeration for WebRTC ICE gathering state.

Since :: 6.5

Remarks:: It corresponds with the RTCIceGatheringState enum described in https://www.w3.org/TR/webrtc/#rtcicegatheringstate-enum.

Enumerator:

WEBRTC_ICE_GATHERING_STATE_NEW	New
WEBRTC_ICE_GATHERING_STATE_GATHERING	Gathering
WEBRTC_ICE_GATHERING_STATE_COMPLETE	Complete

enum webrtc_ice_transport_policy_e

Enumeration for WebRTC ICE transport policy.

Since :: 6.5

Remarks:: It corresponds with the RTCIceTransportPolicy enum described in https://www.w3.org/TR/webrtc/#rtcicetransportpolicy-enum.

Enumerator:

WEBRTC_ICE_TRANSPORT_POLICY_ALL	All
WEBRTC_ICE_TRANSPORT_POLICY_RELAY	Relay

enum webrtc_media_type_e

Enumeration for WebRTC media type.

Since :: 6.5

Enumerator:

WEBRTC_MEDIA_TYPE_AUDIO	Audio
WEBRTC_MEDIA_TYPE_VIDEO	Video

enum webrtc_peer_connection_state_e

Enumeration for WebRTC peer connection state.

Since :: 6.5

Remarks:: It corresponds with the RTCPeerConnectionState enum described in https://www.w3.org/TR/webrtc/#rtcpeerconnectionstate-enum.

Enumerator:

WEBRTC_PEER_CONNECTION_STATE_NEW	New
WEBRTC_PEER_CONNECTION_STATE_CONNECTING	Connecting
WEBRTC_PEER_CONNECTION_STATE_CONNECTED	Connected
WEBRTC_PEER_CONNECTION_STATE_DISCONNECTED	Disconnected
WEBRTC_PEER_CONNECTION_STATE_FAILED	Failed
WEBRTC_PEER_CONNECTION_STATE_CLOSED	Closed

enum webrtc_signaling_state_e

Enumeration for WebRTC signaling state.

Since :: 6.5

Remarks:: It corresponds with the RTCSignalingState enum described in https://www.w3.org/TR/webrtc/#rtcsignalingstate-enum.

Enumerator:

WEBRTC_SIGNALING_STATE_STABLE	Stable
WEBRTC_SIGNALING_STATE_HAVE_LOCAL_OFFER	Have local offer
WEBRTC_SIGNALING_STATE_HAVE_REMOTE_OFFER	Have remote offer
WEBRTC_SIGNALING_STATE_HAVE_LOCAL_PRANSWER	Have local provisional answer
WEBRTC_SIGNALING_STATE_HAVE_REMOTE_PRANSWER	Have remote provisional answer
WEBRTC_SIGNALING_STATE_CLOSED	Closed

enum webrtc_state_e

Enumeration for WebRTC state.

See State Transitions.

Since :: 6.5

Enumerator:

WEBRTC_STATE_IDLE	Created but not started
WEBRTC_STATE_NEGOTIATING	Started but negotiation stage
WEBRTC_STATE_PLAYING	Started all streams

Function Documentation

int webrtc_add_ice_candidate	(	webrtc_h	webrtc,
		const char *	candidate
	)

Adds a new ICE candidate from the remote peer over its signaling channel.

Since :: 6.5

Remarks:: candidate is a JSON string.
It should be {"ice":{"candidate":"...", "sdpMLineIndex":0 or 1 or ...}}.

Parameters:

[in]	webrtc	WebRTC handle
[in]	candidate	The ICE candidate

Returns:: 0 on success, otherwise a negative error value

Return values:

WEBRTC_ERROR_NONE	Successful
WEBRTC_ERROR_INVALID_PARAMETER	Invalid parameter
WEBRTC_ERROR_INVALID_OPERATION	Invalid operation
WEBRTC_ERROR_INVALID_STATE	Invalid state

Precondition:: webrtc state must be set to WEBRTC_STATE_NEGOTIATING.

int webrtc_add_turn_server	(	webrtc_h	webrtc,
		const char *	turn_server
	)

Adds a TURN server URL.

Since :: 6.5

Remarks:: Regarding TURN, refer to the RFC7065(https://tools.ietf.org/html/rfc7065).

Parameters:

[in]	webrtc	WebRTC handle
[in]	turn_server	The TURN server URL of the form turn(s)://username:password:port

Returns:: 0 on success, otherwise a negative error value

Return values:

WEBRTC_ERROR_NONE	Successful
WEBRTC_ERROR_INVALID_PARAMETER	Invalid parameter
WEBRTC_ERROR_INVALID_STATE	Invalid state

Precondition:: webrtc state must be set to WEBRTC_STATE_IDLE.

See also:: webrtc_foreach_turn_server()

int webrtc_create ( webrtc_h * webrtc )

Creates an instance of WebRTC.

Since :: 6.5

Privilege Level:: public

Privilege:: http://tizen.org/privilege/internet

Remarks:: A signaling channel not addressed in this API should be established to send SDP or ICE candidate messages to each other.
The webrtc should be released using webrtc_destroy().

Parameters:

[out] webrtc WebRTC handle

Returns:: 0 on success, otherwise a negative error value

Return values:

WEBRTC_ERROR_NONE	Successful
WEBRTC_ERROR_NOT_SUPPORTED	Not supported
WEBRTC_ERROR_PERMISSION_DENIED	Permission denied
WEBRTC_ERROR_INVALID_PARAMETER	Invalid parameter
WEBRTC_ERROR_INVALID_OPERATION	Invalid operation

Postcondition:: webrtc state will be WEBRTC_STATE_IDLE.

See also:: webrtc_destroy()

int webrtc_create_answer	(	webrtc_h	webrtc,
		bundle *	options,
		char **	answer
	)

Creates SDP answer to an offer received from a remote peer during the negotiation of a WebRTC connection.

Since :: 6.5

Remarks:: The answer should be released using free().
The options currently has no effect.

Parameters:

[in]	webrtc	WebRTC handle
[in]	options	Configuration options for the answer (optional, this can be NULL)
[out]	answer	SDP answer

Returns:: 0 on success, otherwise a negative error value

Return values:

WEBRTC_ERROR_NONE	Successful
WEBRTC_ERROR_INVALID_PARAMETER	Invalid parameter
WEBRTC_ERROR_INVALID_OPERATION	Invalid operation
WEBRTC_ERROR_INVALID_STATE	Invalid state

Precondition:: webrtc state must be set to WEBRTC_STATE_NEGOTIATING.; The remote SDP offer must be set by calling webrtc_set_remote_description().; The signaling state must be set to WEBRTC_SIGNALING_STATE_HAVE_REMOTE_OFFER.

Postcondition:: answer must be set as a local description by calling webrtc_set_local_description(); answer must be sent to the remote peer via the signaling channel.

See also:: webrtc_set_remote_description(); webrtc_set_local_description(); webrtc_get_signaling_state(); webrtc_set_signaling_state_change_cb()

int webrtc_create_answer_async	(	webrtc_h	webrtc,
		bundle *	options,
		webrtc_session_description_created_cb	callback,
		void *	user_data
	)

Creates SDP answer asynchronously to an offer received from a remote peer during the negotiation of a WebRTC connection.

Since :: 6.5

Remarks:: The registered callback will be invoked in the main thread.
The options currently has no effect.

Parameters:

[in]	webrtc	WebRTC handle
[in]	options	Configuration options for the answer (optional, this can be NULL)
[in]	callback	Callback function pointer
[in]	user_data	The user data to be passed to the callback function

Returns:: 0 on success, otherwise a negative error value

Return values:

WEBRTC_ERROR_NONE	Successful
WEBRTC_ERROR_INVALID_PARAMETER	Invalid parameter
WEBRTC_ERROR_INVALID_OPERATION	Invalid operation
WEBRTC_ERROR_INVALID_STATE	Invalid state

Precondition:: webrtc state must be set to WEBRTC_STATE_NEGOTIATING.; The remote SDP offer must be set by calling webrtc_set_remote_description().; The signaling state must be set to WEBRTC_SIGNALING_STATE_HAVE_REMOTE_OFFER.

Postcondition:: webrtc_session_description_created_cb() will be invoked.

See also:: webrtc_set_remote_description(); webrtc_set_local_description(); webrtc_get_signaling_state(); webrtc_set_signaling_state_change_cb(); webrtc_session_description_created_cb()

int webrtc_create_offer	(	webrtc_h	webrtc,
		bundle *	options,
		char **	offer
	)

Creates SDP offer to start a new WebRTC connection to a remote peer.

Since :: 6.5

Remarks:: The offer should be released using free().
The options currently has no effect.

Parameters:

[in]	webrtc	WebRTC handle
[in]	options	Configuration options for the offer (optional, this can be NULL)
[out]	offer	SDP offer

Returns:: 0 on success, otherwise a negative error value

Return values:

WEBRTC_ERROR_NONE	Successful
WEBRTC_ERROR_INVALID_PARAMETER	Invalid parameter
WEBRTC_ERROR_INVALID_OPERATION	Invalid operation
WEBRTC_ERROR_INVALID_STATE	Invalid state

Precondition:: webrtc state must be set to WEBRTC_STATE_NEGOTIATING.

Postcondition:: offer must be set as a local description by calling webrtc_set_local_description(); offer must be sent to the remote peer via the signaling channel.

See also:: webrtc_state_changed_cb(); webrtc_negotiation_needed_cb(); webrtc_set_local_description()

int webrtc_create_offer_async	(	webrtc_h	webrtc,
		bundle *	options,
		webrtc_session_description_created_cb	callback,
		void *	user_data
	)

Creates SDP offer asynchronously to start a new WebRTC connection to a remote peer.

Since :: 6.5

Remarks:: The registered callback will be invoked in the main thread.
The options currently has no effect.

Parameters:

[in]	webrtc	WebRTC handle
[in]	options	Configuration options for the offer (optional, this can be NULL)
[in]	callback	Callback function pointer
[in]	user_data	The user data to be passed to the callback function

Returns:: 0 on success, otherwise a negative error value

Return values:

WEBRTC_ERROR_NONE	Successful
WEBRTC_ERROR_INVALID_PARAMETER	Invalid parameter
WEBRTC_ERROR_INVALID_OPERATION	Invalid operation
WEBRTC_ERROR_INVALID_STATE	Invalid state

Precondition:: webrtc state must be set to WEBRTC_STATE_NEGOTIATING.

Postcondition:: webrtc_session_description_created_cb() will be invoked.

See also:: webrtc_state_changed_cb(); webrtc_negotiation_needed_cb(); webrtc_set_local_description(); webrtc_session_description_created_cb()

int webrtc_destroy ( webrtc_h webrtc )

Destroys the WebRTC.

Since :: 6.5

Parameters:

[in] webrtc WebRTC handle

Returns:: 0 on success, otherwise a negative error value

Return values:

WEBRTC_ERROR_NONE	Successful
WEBRTC_ERROR_INVALID_PARAMETER	Invalid parameter
WEBRTC_ERROR_INVALID_OPERATION	Invalid operation

See also:: webrtc_create()

int webrtc_foreach_turn_server	(	webrtc_h	webrtc,
		webrtc_turn_server_cb	callback,
		void *	user_data
	)

Retrieves all the TURN server URLs.

Since :: 6.5

Parameters:

[in]	webrtc	WebRTC handle
[in]	callback	Callback function pointer
[in]	user_data	The user data to be passed to the callback function

Returns:: 0 on success, otherwise a negative error value

Return values:

WEBRTC_ERROR_NONE	Successful
WEBRTC_ERROR_INVALID_PARAMETER	Invalid parameter

See also:: webrtc_turn_server_cb(); webrtc_add_turn_server()

int webrtc_get_ice_connection_state	(	webrtc_h	webrtc,
		webrtc_ice_connection_state_e *	state
	)

Gets the ICE connection state.

Since :: 6.5

Remarks:: The default value is WEBRTC_ICE_CONNECTION_STATE_NEW.

Parameters:

[in]	webrtc	WebRTC handle
[out]	state	The ICE connection state

Returns:: 0 on success, otherwise a negative error value

Return values:

WEBRTC_ERROR_NONE	Successful
WEBRTC_ERROR_INVALID_PARAMETER	Invalid parameter

See also:: webrtc_set_ice_connection_state_change_cb(); webrtc_unset_ice_connection_state_change_cb()

int webrtc_get_ice_gathering_state	(	webrtc_h	webrtc,
		webrtc_ice_gathering_state_e *	state
	)

Gets the ICE gathering state.

Since :: 6.5

Remarks:: The default value is WEBRTC_ICE_GATHERING_STATE_NEW.

Parameters:

[in]	webrtc	WebRTC handle
[out]	state	The ICE gathering state

Returns:: 0 on success, otherwise a negative error value

Return values:

WEBRTC_ERROR_NONE	Successful
WEBRTC_ERROR_INVALID_PARAMETER	Invalid parameter

See also:: webrtc_set_ice_gathering_state_change_cb(); webrtc_unset_ice_gathering_state_change_cb()

int webrtc_get_ice_transport_policy	(	webrtc_h	webrtc,
		webrtc_ice_transport_policy_e *	policy
	)

Gets the ICE transport policy.

Since :: 6.5

Remarks:: The default value is WEBRTC_ICE_TRANSPORT_POLICY_ALL.

Parameters:

[in]	webrtc	WebRTC handle
[out]	policy	The ICE transport policy

Returns:: 0 on success, otherwise a negative error value

Return values:

WEBRTC_ERROR_NONE	Successful
WEBRTC_ERROR_INVALID_PARAMETER	Invalid parameter

See also:: webrtc_set_ice_transport_policy()

int webrtc_get_peer_connection_state	(	webrtc_h	webrtc,
		webrtc_peer_connection_state_e *	state
	)

Gets the peer connection state.

Since :: 6.5

Remarks:: The default value is WEBRTC_PEER_CONNECTION_STATE_NEW.

Parameters:

[in]	webrtc	WebRTC handle
[out]	state	The peer connection state

Returns:: 0 on success, otherwise a negative error value

Return values:

WEBRTC_ERROR_NONE	Successful
WEBRTC_ERROR_INVALID_PARAMETER	Invalid parameter

See also:: webrtc_set_peer_connection_state_change_cb(); webrtc_unset_peer_connection_state_change_cb()

int webrtc_get_signaling_state	(	webrtc_h	webrtc,
		webrtc_signaling_state_e *	state
	)

Gets the signaling state.

Since :: 6.5

Remarks:: The default value is WEBRTC_SIGNALING_STATE_STABLE.

Parameters:

[in]	webrtc	WebRTC handle
[out]	state	The signaling state

Returns:: 0 on success, otherwise a negative error value

Return values:

WEBRTC_ERROR_NONE	Successful
WEBRTC_ERROR_INVALID_PARAMETER	Invalid parameter

See also:: webrtc_set_signaling_state_change_cb(); webrtc_unset_signaling_state_change_cb()

int webrtc_get_state	(	webrtc_h	webrtc,
		webrtc_state_e *	state
	)

Gets the WebRTC state.

Since :: 6.5

Parameters:

[in]	webrtc	WebRTC handle
[out]	state	WebRTC state

Returns:: 0 on success, otherwise a negative error value

Return values:

WEBRTC_ERROR_NONE	Successful
WEBRTC_ERROR_INVALID_PARAMETER	Invalid parameter

See also:: webrtc_set_state_changed_cb(); webrtc_unset_state_changed_cb()

int webrtc_get_stun_server	(	webrtc_h	webrtc,
		char **	stun_server
	)

Gets the STUN server URL.

Since :: 6.5

Remarks:: The stun_server should be released using free().

Parameters:

[in]	webrtc	WebRTC handle
[out]	stun_server	The STUN server URL

Returns:: 0 on success, otherwise a negative error value

Return values:

WEBRTC_ERROR_NONE	Successful
WEBRTC_ERROR_INVALID_PARAMETER	Invalid parameter

int webrtc_set_error_cb	(	webrtc_h	webrtc,
		webrtc_error_cb	callback,
		void *	user_data
	)

Sets a callback function to be invoked when an asynchronous operation error occurs.

Since :: 6.5

Parameters:

[in]	webrtc	WebRTC handle
[in]	callback	Callback function pointer
[in]	user_data	The user data to be passed to the callback function

Returns:: 0 on success, otherwise a negative error value

Return values:

WEBRTC_ERROR_NONE	Successful
WEBRTC_ERROR_INVALID_PARAMETER	Invalid parameter

Postcondition:: webrtc_error_cb() will be invoked.

See also:: webrtc_unset_error_cb(); webrtc_error_cb()

int webrtc_set_ice_candidate_cb	(	webrtc_h	webrtc,
		webrtc_ice_candidate_cb	callback,
		void *	user_data
	)

Sets an ICE candidate callback function to be invoked when the WebRTC needs to send the ICE candidate message to the remote peer.

Since :: 6.5

Remarks:: If all the ICE candidates have been gathered, ICE gathering state will be changed to WEBRTC_ICE_GATHERING_STATE_COMPLETE.
The registered callback will be invoked in an internal thread of the webrtc.

Parameters:

[in]	webrtc	WebRTC handle
[in]	callback	Callback function pointer
[in]	user_data	The user data to be passed to the callback function

Returns:: 0 on success, otherwise a negative error value

Return values:

WEBRTC_ERROR_NONE	Successful
WEBRTC_ERROR_INVALID_PARAMETER	Invalid parameter
WEBRTC_ERROR_INVALID_STATE	Invalid state

Precondition:: webrtc state must be set to WEBRTC_STATE_IDLE.

Postcondition:: webrtc_ice_candidate_cb() will be invoked.

See also:: webrtc_unset_ice_candidate_cb(); webrtc_ice_candidate_cb(); webrtc_set_ice_gathering_state_change_cb(); webrtc_get_ice_gathering_state()

int webrtc_set_ice_connection_state_change_cb	(	webrtc_h	webrtc,
		webrtc_ice_connection_state_change_cb	callback,
		void *	user_data
	)

Sets a callback function to be invoked when the WebRTC ICE connection state is changed.

Since :: 6.5

Remarks:: The registered callback will be invoked in the main thread.

Parameters:

[in]	webrtc	WebRTC handle
[in]	callback	Callback function pointer
[in]	user_data	The user data to be passed to the callback function

Returns:: 0 on success, otherwise a negative error value

Return values:

WEBRTC_ERROR_NONE	Successful
WEBRTC_ERROR_INVALID_PARAMETER	Invalid parameter

Precondition:: webrtc state must be set to WEBRTC_STATE_IDLE.

Postcondition:: webrtc_ice_connection_state_change_cb() will be invoked.

See also:: webrtc_unset_ice_connection_state_change_cb(); webrtc_ice_connection_state_change_cb(); webrtc_get_ice_connection_state()

int webrtc_set_ice_gathering_state_change_cb	(	webrtc_h	webrtc,
		webrtc_ice_gathering_state_change_cb	callback,
		void *	user_data
	)

Sets a callback function to be invoked when the WebRTC ICE gathering state is changed.

Since :: 6.5

Remarks:: The registered callback will be invoked in the main thread.

Parameters:

[in]	webrtc	WebRTC handle
[in]	callback	Callback function pointer
[in]	user_data	The user data to be passed to the callback function

Returns:: 0 on success, otherwise a negative error value

Return values:

WEBRTC_ERROR_NONE	Successful
WEBRTC_ERROR_INVALID_PARAMETER	Invalid parameter

Precondition:: webrtc state must be set to WEBRTC_STATE_IDLE.

Postcondition:: webrtc_ice_gathering_state_change_cb() will be invoked.

See also:: webrtc_unset_ice_gathering_state_change_cb(); webrtc_ice_gathering_state_change_cb(); webrtc_get_ice_gathering_state()

int webrtc_set_ice_transport_policy	(	webrtc_h	webrtc,
		webrtc_ice_transport_policy_e	policy
	)

Sets a ICE transport policy that represents which candidates the ICE Agent is allowed to use.

Since :: 6.5

Parameters:

[in]	webrtc	WebRTC handle
[in]	policy	The ICE transport policy

Returns:: 0 on success, otherwise a negative error value

Return values:

WEBRTC_ERROR_NONE	Successful
WEBRTC_ERROR_INVALID_PARAMETER	Invalid parameter
WEBRTC_ERROR_INVALID_STATE	Invalid state

Precondition:: webrtc state must be set to WEBRTC_STATE_IDLE.

See also:: webrtc_get_ice_transport_policy()

int webrtc_set_local_description	(	webrtc_h	webrtc,
		const char *	description
	)

Sets the session description for a local peer associated with a WebRTC connection.

Since :: 6.5

Remarks:: description is a JSON string.
It will be {"sdp":{"type":"offer or answer","sdp":"..."}}.

Parameters:

[in]	webrtc	WebRTC handle
[in]	description	The local session description

Returns:: 0 on success, otherwise a negative error value

Return values:

WEBRTC_ERROR_NONE	Successful
WEBRTC_ERROR_INVALID_PARAMETER	Invalid parameter
WEBRTC_ERROR_INVALID_OPERATION	Invalid operation
WEBRTC_ERROR_INVALID_STATE	Invalid state

Precondition:: webrtc state must be set to WEBRTC_STATE_NEGOTIATING.

See also:: webrtc_create_offer(); webrtc_create_offer_async(); webrtc_create_answer(); webrtc_create_answer_async(); webrtc_set_signaling_state_change_cb(); webrtc_get_signaling_state()

int webrtc_set_negotiation_needed_cb	(	webrtc_h	webrtc,
		webrtc_negotiation_needed_cb	callback,
		void *	user_data
	)

Sets a negotiation needed callback function to be invoked when a change has occurred which requires session negotiation.

Since :: 6.5

Remarks:: The registered callback will be invoked in an internal thread of the webrtc.

Parameters:

[in]	webrtc	WebRTC handle
[in]	callback	Callback function pointer
[in]	user_data	The user data to be passed to the callback function

Returns:: 0 on success, otherwise a negative error value

Return values:

WEBRTC_ERROR_NONE	Successful
WEBRTC_ERROR_INVALID_PARAMETER	Invalid parameter
WEBRTC_ERROR_INVALID_STATE	Invalid state

Precondition:: webrtc state must be set to WEBRTC_STATE_IDLE.

Postcondition:: webrtc_negotiation_needed_cb() will be invoked.

See also:: webrtc_unset_negotiation_needed_cb(); webrtc_negotiation_needed_cb()

int webrtc_set_peer_connection_state_change_cb	(	webrtc_h	webrtc,
		webrtc_peer_connection_state_change_cb	callback,
		void *	user_data
	)

Sets a callback function to be invoked when the WebRTC peer connection state is changed.

Since :: 6.5

Remarks:: The registered callback will be invoked in the main thread.

Parameters:

[in]	webrtc	WebRTC handle
[in]	callback	Callback function pointer
[in]	user_data	The user data to be passed to the callback function

Returns:: 0 on success, otherwise a negative error value

Return values:

WEBRTC_ERROR_NONE	Successful
WEBRTC_ERROR_INVALID_PARAMETER	Invalid parameter

Precondition:: webrtc state must be set to WEBRTC_STATE_IDLE.

Postcondition:: webrtc_peer_connection_state_change_cb() will be invoked.

See also:: webrtc_unset_peer_connection_state_change_cb(); webrtc_peer_connection_state_change_cb(); webrtc_get_peer_connection_state()

int webrtc_set_remote_description	(	webrtc_h	webrtc,
		const char *	description
	)

Sets the session description of the remote peer's current offer or answer.

Since :: 6.5

Remarks:: description is a JSON string.
It should be {"sdp":{"type":"offer or answer","sdp":"..."}}.

Parameters:

[in]	webrtc	WebRTC handle
[in]	description	The remote session description

Returns:: 0 on success, otherwise a negative error value

Return values:

WEBRTC_ERROR_NONE	Successful
WEBRTC_ERROR_INVALID_PARAMETER	Invalid parameter
WEBRTC_ERROR_INVALID_OPERATION	Invalid operation
WEBRTC_ERROR_INVALID_STATE	Invalid state

Precondition:: webrtc state must be set to WEBRTC_STATE_NEGOTIATING.

See also:: webrtc_state_changed_cb(); webrtc_set_signaling_state_change_cb(); webrtc_get_signaling_state()

int webrtc_set_signaling_state_change_cb	(	webrtc_h	webrtc,
		webrtc_signaling_state_change_cb	callback,
		void *	user_data
	)

Sets a callback function to be invoked when the WebRTC signaling state is changed.

Since :: 6.5

Remarks:: The registered callback will be invoked in the main thread.

Parameters:

[in]	webrtc	WebRTC handle
[in]	callback	Callback function pointer
[in]	user_data	The user data to be passed to the callback function

Returns:: 0 on success, otherwise a negative error value

Return values:

WEBRTC_ERROR_NONE	Successful
WEBRTC_ERROR_INVALID_PARAMETER	Invalid parameter

Precondition:: webrtc state must be set to WEBRTC_STATE_IDLE.

Postcondition:: webrtc_signaling_state_change_cb() will be invoked.

See also:: webrtc_unset_signaling_state_change_cb(); webrtc_signaling_state_change_cb(); webrtc_get_signaling_state()

int webrtc_set_state_changed_cb	(	webrtc_h	webrtc,
		webrtc_state_changed_cb	callback,
		void *	user_data
	)

Sets a callback function to be invoked when the WebRTC state is changed.

Since :: 6.5

Remarks:: The registered callback will be invoked in the main thread.

Parameters:

[in]	webrtc	WebRTC handle
[in]	callback	Callback function pointer
[in]	user_data	The user data to be passed to the callback function

Returns:: 0 on success, otherwise a negative error value

Return values:

WEBRTC_ERROR_NONE	Successful
WEBRTC_ERROR_INVALID_PARAMETER	Invalid parameter

Postcondition:: webrtc_state_changed_cb() will be invoked.

See also:: webrtc_unset_state_changed_cb(); webrtc_state_changed_cb(); webrtc_get_state(); webrtc_create_offer(); webrtc_create_offer_async()

int webrtc_set_stun_server	(	webrtc_h	webrtc,
		const char *	stun_server
	)

Sets a STUN server URL.

Since :: 6.5

Remarks:: Regarding STUN, refer to the RFC7064(https://tools.ietf.org/html/rfc7064).

Parameters:

[in]	webrtc	WebRTC handle
[in]	stun_server	The STUN server URL of the form stun://host:port

Returns:: 0 on success, otherwise a negative error value

Return values:

WEBRTC_ERROR_NONE	Successful
WEBRTC_ERROR_INVALID_PARAMETER	Invalid parameter
WEBRTC_ERROR_INVALID_STATE	Invalid state

Precondition:: webrtc state must be set to WEBRTC_STATE_IDLE.

int webrtc_set_track_added_cb	(	webrtc_h	webrtc,
		webrtc_track_added_cb	callback,
		void *	user_data
	)

Sets a track added callback function to be invoked when a new track has been added to the WebRTC.

Since :: 6.5

Remarks:: The registered callback will be invoked in an internal thread of the webrtc.

Parameters:

[in]	webrtc	WebRTC handle
[in]	callback	Callback function pointer
[in]	user_data	The user data to be passed to the callback function

Returns:: 0 on success, otherwise a negative error value

Return values:

WEBRTC_ERROR_NONE	Successful
WEBRTC_ERROR_INVALID_PARAMETER	Invalid parameter
WEBRTC_ERROR_INVALID_STATE	Invalid state

Precondition:: webrtc state must be set to WEBRTC_STATE_IDLE or WEBRTC_STATE_NEGOTIATING.

Postcondition:: webrtc_track_added_cb() will be invoked.

See also:: webrtc_unset_track_added_cb(); webrtc_track_added_cb()

int webrtc_start ( webrtc_h webrtc )

Starts the WebRTC.

Since :: 6.5

Parameters:

[in] webrtc WebRTC handle

Returns:: 0 on success, otherwise a negative error value

Return values:

WEBRTC_ERROR_NONE	Successful
WEBRTC_ERROR_INVALID_PARAMETER	Invalid parameter
WEBRTC_ERROR_INVALID_OPERATION	Invalid operation
WEBRTC_ERROR_INVALID_STATE	Invalid state
WEBRTC_ERROR_RESOURCE_FAILED	Resource failed

Precondition:: webrtc_ice_candidate_cb() must be set by calling webrtc_set_ice_candidate_cb().; webrtc_media_packet_source_set_format() must be called if webrtc has a media packet source.; webrtc state must be set to WEBRTC_STATE_IDLE.

Postcondition:: webrtc state will be WEBRTC_STATE_NEGOTIATING.

See also:: webrtc_create(); webrtc_stop()

int webrtc_stop ( webrtc_h webrtc )

Stops the WebRTC.

Since :: 6.5

Parameters:

[in] webrtc WebRTC handle

Returns:: 0 on success, otherwise a negative error value

Return values:

WEBRTC_ERROR_NONE	Successful
WEBRTC_ERROR_INVALID_PARAMETER	Invalid parameter
WEBRTC_ERROR_INVALID_STATE	Invalid state
WEBRTC_ERROR_RESOURCE_FAILED	Resource failed

Precondition:: webrtc state must be set to WEBRTC_STATE_NEGOTIATING or WEBRTC_STATE_PLAYING.

Postcondition:: webrtc state will be WEBRTC_STATE_IDLE.

See also:: webrtc_create(); webrtc_start()

int webrtc_unset_error_cb ( webrtc_h webrtc )

Unsets the error callback function.

Since :: 6.5

Parameters:

[in] webrtc WebRTC handle

Returns:: 0 on success, otherwise a negative error value

Return values:

WEBRTC_ERROR_NONE	Successful
WEBRTC_ERROR_INVALID_PARAMETER	Invalid parameter
WEBRTC_ERROR_INVALID_OPERATION	Invalid operation

See also:: webrtc_set_error_cb()

int webrtc_unset_ice_candidate_cb ( webrtc_h webrtc )

Unsets the ice candidate callback function.

Since :: 6.5

Parameters:

[in] webrtc WebRTC handle

Returns:: 0 on success, otherwise a negative error value

Return values:

WEBRTC_ERROR_NONE	Successful
WEBRTC_ERROR_INVALID_PARAMETER	Invalid parameter
WEBRTC_ERROR_INVALID_OPERATION	Invalid operation
WEBRTC_ERROR_INVALID_STATE	Invalid state

Precondition:: webrtc state must be set to WEBRTC_STATE_IDLE.

See also:: webrtc_set_ice_candidate_cb()

int webrtc_unset_ice_connection_state_change_cb ( webrtc_h webrtc )

Unsets the ICE connection state change callback function.

Since :: 6.5

Parameters:

[in] webrtc WebRTC handle

Returns:: 0 on success, otherwise a negative error value

Return values:

WEBRTC_ERROR_NONE	Successful
WEBRTC_ERROR_INVALID_PARAMETER	Invalid parameter
WEBRTC_ERROR_INVALID_OPERATION	Invalid operation

Precondition:: webrtc state must be set to WEBRTC_STATE_IDLE.

See also:: webrtc_set_ice_connection_state_change_cb(); webrtc_get_ice_connection_state()

int webrtc_unset_ice_gathering_state_change_cb ( webrtc_h webrtc )

Unsets the ICE gathering state change callback function.

Since :: 6.5

Parameters:

[in] webrtc WebRTC handle

Returns:: 0 on success, otherwise a negative error value

Return values:

WEBRTC_ERROR_NONE	Successful
WEBRTC_ERROR_INVALID_PARAMETER	Invalid parameter
WEBRTC_ERROR_INVALID_OPERATION	Invalid operation

Precondition:: webrtc state must be set to WEBRTC_STATE_IDLE.

See also:: webrtc_set_ice_gathering_state_change_cb(); webrtc_get_ice_gathering_state()

int webrtc_unset_negotiation_needed_cb ( webrtc_h webrtc )

Unsets the negotiation needed callback function.

Since :: 6.5

Parameters:

[in] webrtc WebRTC handle

Returns:: 0 on success, otherwise a negative error value

Return values:

WEBRTC_ERROR_NONE	Successful
WEBRTC_ERROR_INVALID_PARAMETER	Invalid parameter
WEBRTC_ERROR_INVALID_OPERATION	Invalid operation
WEBRTC_ERROR_INVALID_STATE	Invalid state

Precondition:: webrtc state must be set to WEBRTC_STATE_IDLE.

See also:: webrtc_set_negotiation_needed_cb()

int webrtc_unset_peer_connection_state_change_cb ( webrtc_h webrtc )

Unsets the peer connection state change callback function.

Since :: 6.5

Parameters:

[in] webrtc WebRTC handle

Returns:: 0 on success, otherwise a negative error value

Return values:

WEBRTC_ERROR_NONE	Successful
WEBRTC_ERROR_INVALID_PARAMETER	Invalid parameter
WEBRTC_ERROR_INVALID_OPERATION	Invalid operation

Precondition:: webrtc state must be set to WEBRTC_STATE_IDLE.

See also:: webrtc_set_peer_connection_state_change_cb(); webrtc_get_peer_connection_state()

int webrtc_unset_signaling_state_change_cb ( webrtc_h webrtc )

Unsets the signaling state change callback function.

Since :: 6.5

Parameters:

[in] webrtc WebRTC handle

Returns:: 0 on success, otherwise a negative error value

Return values:

WEBRTC_ERROR_NONE	Successful
WEBRTC_ERROR_INVALID_PARAMETER	Invalid parameter
WEBRTC_ERROR_INVALID_OPERATION	Invalid operation

Precondition:: webrtc state must be set to WEBRTC_STATE_IDLE.

See also:: webrtc_set_signaling_state_change_cb(); webrtc_get_signaling_state()

int webrtc_unset_state_changed_cb ( webrtc_h webrtc )

Unsets the state changed callback function.

Since :: 6.5

Parameters:

[in] webrtc WebRTC handle

Returns:: 0 on success, otherwise a negative error value

Return values:

WEBRTC_ERROR_NONE	Successful
WEBRTC_ERROR_INVALID_PARAMETER	Invalid parameter
WEBRTC_ERROR_INVALID_OPERATION	Invalid operation

See also:: webrtc_set_state_changed_cb()

int webrtc_unset_track_added_cb ( webrtc_h webrtc )

Unsets the track added callback function.

Since :: 6.5

Parameters:

[in] webrtc WebRTC handle

Returns:: 0 on success, otherwise a negative error value

Return values:

WEBRTC_ERROR_NONE	Successful
WEBRTC_ERROR_INVALID_PARAMETER	Invalid parameter
WEBRTC_ERROR_INVALID_OPERATION	Invalid operation

See also:: webrtc_set_track_added_cb()

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