EnxStream Class Stream Handler: Android SDK – Video API

The EnxStream is a derived Class from EnxRtc. It handles all the Media Stream-related functions to initiate, configure, and transport Streams to EnableX Media Servers. It is also used for receiving Stream endpoints to be played.

References: Attributes – Methods – Observers

Private Attributes

• id – Unique Stream ID.
• local – Boolean. True for Local Stream, False for Remote Stream.
• room – JSON Object. Room with which the Stream is associated.
• showing – Boolean. Whether the stream is being played.
• audio – Boolean. True if the stream carries Audio Track.
• video – Boolean. True if the stream carries Video Track.
• screen – Boolean. True if the stream carries Screen Share.
• videoSize – Size of Video Frame, defined as [minWidth, minHeight, maxWidth, maxHeight].
• videoFrameRate – Frame Rate of Video Stream, defined as [min, max].
• desktopStreamId – Chrome Media Source ID to be used for Screen Share.
• extensionId – Extension ID to be used for Screen Share.
• audioMuted – Boolean. True if Audio is muted
• videoMuted – Boolean. True if Video is muted
• attributes – videoFrameRate

Methods

A categorized listing of Stream Handler methods is as given below:

Stream Information

• getId() – To get Stream ID.
• getAttributes() – To get all attributes of the Stream.
• getMedia() – To get Audio and Video tracks.
• getState() – To get the current state of the Stream.
• hasAudio() – To know if the Stream has an Audio track.
• hasVideo() – To know if the Stream has a Video track.
• hasData() – To know if the Stream has Text Data.
• hasScreen() – To know if the Stream has Screen Share.
• ifLocal() – To know if the Stream is a Local Stream.
• isAudioActive() – To know if the Audio Track is currently active.
• isVideoActive() – To know if the Video Track is currently active.
• getLocalStream() – To initialize a local stream at the Client endpoint before it can be published to the Room. 

Stream Controls

• muteSelfAudio() – To mute/unmute audio of the Local Stream.
• muteSelfVideo() – To mute/unmute video of the Local Stream.
• switchCamera() – To switch the Stream source from rear to front Camera or vice-versa.
• updateConfiguration() – To reconfigure a Stream by adding new or updating existing attributes of the Stream.

Moderator Controls

• hardMuteAudio() – To hard-mute a Participant’s audio.
• hardMuteVideo() – To hard-mute a Participant’s video.
• hardUnMuteAudio()– To lift the audio hard-mute restriction from the Participant.
• hardUnmuteVideo() – To lift the video hard-mute restriction from the Participant.

Play Stream

• attachRenderer() – To attach a Stream to the PlayerView.
• detachRenderer() – To detach a Stream from the PlayerView.

Observers & their Callbacks

Stream Observer

Given below is a category-wise listing of Stream Observer Callbacks based on their functions. The Room Observer is initiated along with Room Initialization Process.

Streaming

• onRemoteStreamAudioMute() – Notification to everyone in the Room when a user’s audio is muted.
• onRemoteStreamAudioUnMute() – Notification to everyone in the Room when a user’s audio is unmuted.
• onAudioEvent() – Notification to the stream publisher when the Audio track is muted/unmuted.
• onVideoEvent() – Notification to the stream publisher when the Video track is muted/unmuted.

Messaging

• onReceivedData() – When text messages are received.

Hard Mute Audio Observer

Observer: EnxStream.setMuteAudioStreamObserver(EnxMuteAudioStreamObserver-Object) – To receive the following callbacks:

• onHardMutedAudio – Acknowledgment to the Moderator when the Participant’s Audio Stream is hard-muted.
• onHardUnMutedAudio – Acknowledgment to the Moderator when the hard-mute restriction is lifted from the Participant’s Audio Stream.
• onReceivedHardMuteAudio – Notification to the Participant when the Moderator hard-mutes their Audio Stream.
• onReceivedHardUnMuteAudio – Notification to the Participant when the Moderator lifts the hard-mute restriction from their Audio Stream.

Hard Mute Video Observer

Observer: EnxStream.setMuteVideoStreamObserver(EnxMuteVideoStreamObserver-Object) – To receive the following callbacks:

• onHardMutedVideo – Acknowledgment to the Moderator when the Participant’s Video Stream is hard-muted.
• onHardUnMutedVideo – Acknowledgment to the Moderator when the hard-mute restriction is lifted from the Participant’s Video Stream.
• onReceivedHardMuteVideo – Notification to the Participant when the Moderator hard-mutes their Video Stream.
• onReceivedHardUnMuteVideo – Notification to the Participant when the Moderator lifts the hard-mute restriction from their Video Stream.

---