LoadControl

const val EMPTY_MEDIA_PERIOD_ID: MediaSource.MediaPeriodId!

fun getAllocator(): Allocator!

Returns the Allocator that should be used to obtain media buffer allocations.

fun getBackBufferDurationUs(): Long

Returns the duration of media to retain in the buffer prior to the current playback position, for fast backward seeking.

Note: If retainBackBufferFromKeyframe is false then seeking in the back-buffer will only be fast if the back-buffer contains a keyframe prior to the seek position.

Note: Implementations should return a single value. Dynamic changes to the back-buffer are not currently supported.

fun onPrepared(): Unit

Called by the player when prepared with a new source.

fun onReleased(): Unit

Called by the player when released.

fun onStopped(): Unit

Called by the player when stopped.

fun onTracksSelected(
    renderers: Array<Renderer!>!,
    trackGroups: TrackGroupArray!,
    trackSelections: Array<ExoTrackSelection!>!
): Unit

fun onTracksSelected(
    timeline: Timeline!,
    mediaPeriodId: MediaSource.MediaPeriodId!,
    renderers: Array<Renderer!>!,
    trackGroups: TrackGroupArray!,
    trackSelections: Array<ExoTrackSelection!>!
): Unit

Called by the player when a track selection occurs.

fun retainBackBufferFromKeyframe(): Boolean

Returns whether media should be retained from the keyframe before the current playback position minus getBackBufferDurationUs, rather than any sample before or at that position.

Warning: Returning true will cause the back-buffer size to depend on the spacing of keyframes in the media being played. Returning true is not recommended unless you control the media and are comfortable with the back-buffer size exceeding getBackBufferDurationUs by as much as the maximum duration between adjacent keyframes in the media.

Note: Implementations should return a single value. Dynamic changes to the back-buffer are not currently supported.

fun shouldContinueLoading(
    playbackPositionUs: Long,
    bufferedDurationUs: Long,
    playbackSpeed: Float
): Boolean

Called by the player to determine whether it should continue to load the source. If this method returns true, the MediaPeriod identified in the most recent onTracksSelected call will continue being loaded.

fun shouldStartPlayback(
    bufferedDurationUs: Long,
    playbackSpeed: Float,
    rebuffering: Boolean,
    targetLiveOffsetUs: Long
): Boolean

fun shouldStartPlayback(
    timeline: Timeline!,
    mediaPeriodId: MediaSource.MediaPeriodId!,
    bufferedDurationUs: Long,
    playbackSpeed: Float,
    rebuffering: Boolean,
    targetLiveOffsetUs: Long
): Boolean

Called repeatedly by the player when it's loading the source, has yet to start playback, and has the minimum amount of data necessary for playback to be started. The value returned determines whether playback is actually started. The load control may opt to return false until some condition has been met (e.g. a certain amount of media is buffered).