Package com.opentok.android

Class Publisher.Builder

java.lang.Object

com.opentok.android.PublisherKit.Builder

com.opentok.android.Publisher.Builder

Enclosing class:

Publisher

public static class Publisher.Builder
extends PublisherKit.Builder

Used to build a Publisher object. Instantiate a Builder object using the Publisher.Builder(Context context) constructor. Then call methods of the Builder instance to add settings for the publisher. (Note that the Publisher.Builder class inherits methods from the PublisherKit.Builder class.) Then call the build() method, which returns a Publisher object.

Use the Session.publish(PublisherKit publisher) method to start streaming from the publisher into a session.

Constructor Summary

Constructors

Constructor	Description
Builder(android.content.Context context)	Instantiates a Publisher.Builder object.

Method Summary

Modifier and Type	Method	Description
Publisher.Builder	audioBitrate(int bitsPerSecond)	Sets the desired bitrate for the published audio, in bits per second.
Publisher.Builder	audioTrack(boolean enabled)	Sets whether to include an audio track in the published stream (true, the default) or not (false).
Publisher	build()	Returns a new Publisher instance based on the Publisher.Builder settings.
Publisher.Builder	capturer(BaseVideoCapturer capturer)	Sets the video capturer to use for the publisher.
Publisher.Builder	enableOpusDtx(boolean enable)	Whether to enable Opus DTX (true) or not (false, the default).
Publisher.Builder	frameRate(Publisher.CameraCaptureFrameRate frameRate)	Sets the desired frame rate of the published video.
Publisher.Builder	name(String name)	Sets the name of the published video.
Publisher.Builder	publisherAudioFallbackEnabled(boolean enabled)	Whether the stream will use the publisher audio-fallback feature (true) or not (false).
Publisher.Builder	renderer(BaseVideoRenderer renderer)	Sets the video renderer to use for the publisher.
Publisher.Builder	resolution(Publisher.CameraCaptureResolution resolution)	Sets the video resolution of the published video.
Publisher.Builder	scalableScreenshare(boolean enable)	Whether to allow use of scalable video for a publisher that has the videoType set to PublisherKitVideoTypeScreen (true) or not (false, the default).
Publisher.Builder	subscriberAudioFallbackEnabled(boolean enabled)	Whether the stream will use the subscriber audio-fallback feature (true) or not (false), for subscribers to the published stream.
Publisher.Builder	videoTrack(boolean enabled)	Sets whether to include an video track in the published stream (true, the default) or not (false).

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

Builder

public Builder(android.content.Context context)

Instantiates a Publisher.Builder object.

Method Details

resolution

public Publisher.Builder resolution(Publisher.CameraCaptureResolution resolution)

Sets the video resolution of the published video. Set this to a value defined in the Publisher.CameraCaptureResolution enum

frameRate

public Publisher.Builder frameRate(Publisher.CameraCaptureFrameRate frameRate)

Sets the desired frame rate of the published video. Set this to a value defined in the Publisher.CameraCaptureFrameRate enum. If the device does not support the specified frame rate, it will use the closest supported frame rate. Note that in sessions that use the OpenTok Media Router (sessions with the media mode set to routed), lowering the frame rate proportionally reduces the bandwidth the stream uses. However, in sessions that have the media mode set to relayed, lowering the frame rate does not reduce the stream's bandwidth. (See The OpenTok Media Router and media modes.)

name

public Publisher.Builder name(String name)

Description copied from class: PublisherKit.Builder

Sets the name of the published video. The name property for a stream published by this publisher will be set to this value (on all clients).

Overrides:

name in class PublisherKit.Builder

audioTrack

public Publisher.Builder audioTrack(boolean enabled)

Description copied from class: PublisherKit.Builder

Sets whether to include an audio track in the published stream (true, the default) or not (false). Creating a publisher without an audio track can save CPU resources and reduce the bandwidth used by the stream.

If you call this and pass in false, the audio subsystem will not be initialized for the publisher, and calling the PublisherKit.setPublishAudio(boolean publishAudio) method will have no effect. If your application does not require the use of audio, it is recommended to use this Builder setting rather than use the PublisherKit.setPublishAudio(boolean publishAudio) method, which only temporarily disables the audio track.

Overrides:

audioTrack in class PublisherKit.Builder

videoTrack

public Publisher.Builder videoTrack(boolean enabled)

Description copied from class: PublisherKit.Builder

Sets whether to include an video track in the published stream (true, the default) or not (false). Creating a publisher without a video track can save CPU resources and reduce the bandwidth used by the stream.

If you call this and pass in false, the video subsystem will not be initialized for the publisher, and calling the PublisherKit.setPublishVideo(boolean publishVideo) method will have no effect. If your application does not require the use of video, it is recommended to use this Builder setting rather than use the PublisherKit.setPublishVideo(boolean publishVideo) method, which only temporarily disables the video track.

Overrides:

videoTrack in class PublisherKit.Builder

capturer

public Publisher.Builder capturer(BaseVideoCapturer capturer)

Sets the video capturer to use for the publisher. If you do not call this method, the publisher will use the default Publisher capturer.

Overrides:

capturer in class PublisherKit.Builder

renderer

public Publisher.Builder renderer(BaseVideoRenderer renderer)

Sets the video renderer to use for the publisher. If you do not call this method, the publisher will use the default Publisher renderer.

Overrides:

renderer in class PublisherKit.Builder

audioBitrate

public Publisher.Builder audioBitrate(int bitsPerSecond)

Description copied from class: PublisherKit.Builder

Sets the desired bitrate for the published audio, in bits per second. The supported range of values is 6,000 - 510,000. (Invalid values are ignored.) Set this value to enable high-quality audio (or to reduce bandwidth usage with lower-quality audio).

The following are recommended settings:

• 8,000 - 12,000 for narrowband (NB) speech
• 16,000 - 20,000 for wideband (WB) speech
• 28,000 - 40,000 for full-band (FB) speech
• 48,000 - 64,000 for full-band (FB) mono music
• 64,000 - 128,000 for full-band (FB) stereo music

The default value is 40,000.

To set other audio settings, see the AudioDeviceManager class.

Overrides:

audioBitrate in class PublisherKit.Builder

Parameters:

bitsPerSecond - The desired bitrate of the audio, in bits per second.

Returns:

This Builder object.

scalableScreenshare

public Publisher.Builder scalableScreenshare(boolean enable)

Description copied from class: PublisherKit.Builder

Whether to allow use of scalable video for a publisher that has the videoType set to PublisherKitVideoTypeScreen (true) or not (false, the default).

Overrides:

scalableScreenshare in class PublisherKit.Builder

enableOpusDtx

public Publisher.Builder enableOpusDtx(boolean enable)

Description copied from class: PublisherKit.Builder

Whether to enable Opus DTX (true) or not (false, the default). Enabling Opus DTX can reduce bandwidth usage in streams that have long periods of silence.

By default, Opus DTX is disabled. If this property is set to true, Opus DTX will be enabled for the publisher.

Overrides:

enableOpusDtx in class PublisherKit.Builder

subscriberAudioFallbackEnabled

public Publisher.Builder subscriberAudioFallbackEnabled(boolean enabled)

Description copied from class: PublisherKit.Builder

Whether the stream will use the subscriber audio-fallback feature (true) or not (false), for subscribers to the published stream. The subscriber audio-fallback feature is available in sessions that use the the OpenTok Media Router. With the subscriber audio-fallback feature enabled (the default), when the OpenTok Media Router determines that a stream's quality has degraded significantly for a specific subscriber, it disables the video in that subscriber in order to preserve audio quality.

The default setting is true (the audio-fallback feature is enabled). When using the screen video type in a session that uses the OpenTok Media Server, the subscriber audio-fallback setting is set to false by default, so that the video does not drop out in subscribers.

Overrides:

subscriberAudioFallbackEnabled in class PublisherKit.Builder

See Also:

• SubscriberKit.VideoListener.onVideoDisabled(SubscriberKit subscriber, String reason)
• the OpenTok Media Router and media modes

publisherAudioFallbackEnabled

public Publisher.Builder publisherAudioFallbackEnabled(boolean enabled)

Description copied from class: PublisherKit.Builder

Whether the stream will use the publisher audio-fallback feature (true) or not (false). With the publisher audio-fallback feature enabled (the default), when publisher determines that a stream's quality has degraded significantly, it disables the video in order to preserve audio quality.

The default setting is false (the audio-fallback feature is disabled).

Overrides:

publisherAudioFallbackEnabled in class PublisherKit.Builder

See Also:

• PublisherKit.VideoListener.onVideoDisabled(PublisherKit publisher, String reason)
• the OpenTok Media Router and media modes

build

public Publisher build()

Returns a new Publisher instance based on the Publisher.Builder settings.

Overrides:

build in class PublisherKit.Builder

Returns:

Returns a new PublisherKit instance based on the PublisherKit.Builder settings.