This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

(as stable API)

One stream inside a Content. A stream is a single flow of packets to and from a single remote endpoint. If your call connects to multiple people, you could have multiple streams.

For protocols that support muting streams separately, this object MAY also implement the Mute interface

Set the stream to start or stop sending media from the local user to other contacts.

If True, the LocalSendingState should change to Sending, if it isn't already.

If False, the LocalSendingState should change to None, if it isn't already.

If the call has not been accepted yet, calling SetSending(True) is an error. See LocalSendingState for details.

Request that a remote contact stops or starts sending on this stream.

The CanRequestReceiving property defines whether the protocol allows the local user to request the other side start sending on this stream.

Contact from which sending is requested

If true, request that the given contact starts to send media. If false, request that the given contact stops sending media.

The request contact is valid but is not involved in this stream. The protocol does not allow the local user to request the other side starts sending on this stream.

renamed from SendersChanged to MembersChanged renamed from MembersChanged to RemoteMembersChanged Emitted when RemoteMembers changes. A mapping from channel-specific handles to their updated sending state, whose keys include at least the members who were added, and the members whose states changed. The identifiers of the contacts in the Updates map. The channel-specific handles that were removed from the keys of the RemoteMembers property, as a result of the contact leaving this stream A structured reason for the change. Emitted when LocalSendingState changes. The new value of LocalSendingState. A structured reason for the change. Enum indicating whether a contact is sending media. The contact is not sending media and has not been asked to do so. The contact has been asked to start sending media. The contact is sending media. The contact has been asked to stop sending media. A map from a contact to his or her sending state. The contact handle. The sending state of the contact.

Extra interfaces provided by this stream, such as Stream.Interface.Media. This SHOULD NOT include the Stream interface itself, and cannot change once the stream has been created.

renamed from Senders

A map from remote contacts to their sending state.

Media sent to this stream will be sent to all members listed here. All members listed here will also appear in CallMembers, and each CallMembers member will be listed in at most one Stream per Content. Therefore, to hide things from a member of the call, UIs only need to mute one Stream per Content.

Contacts' handles in this map indicate whether they are sending media to this stream. Sending_State_Pending_Send indicates contacts who are not sending but have been asked to do so. The local user's sending state is shown in LocalSendingState.

This mapping is also used by the streaming implementation to map from MediaDescriptions to Streams. In this use-case, all of the senders in this stream will be represented in RemoteMediaDescriptions. This use-case should not affect anything that does not handle media streaming.

The string identifiers for handles mentioned in RemoteMembers, to give clients the minimal information necessary to create contacts without waiting for round-trips.

The local user's sending state. Media sent on this stream should be assumed to be received, directly or indirectly, by every other contact in the RemoteMembers mapping. Change notification is given via the LocalSendingStateChanged signal.

Implementations of the first Call draft had the self handle in the RemoteMembers (then called Members) map and this showed that it's annoying having to keep track of the self handle so that it can be special-cased.

A value of Pending_Send for this property indicates that the other side requested the local user start sending media (which can be done by calling either SetSending or Accept).

When Accept is called, all streams with a local sending state of Pending_Send and the associated Disposition set to Initial are automatically set to sending.

If true, the user can request that a remote contact starts sending on this stream.

Not all protocols allow the user to ask the other side to start sending media.