ParticipantItem.kt
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package io.livekit.android.composesample
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.runtime.*
import androidx.compose.ui.Modifier
import androidx.compose.ui.viewinterop.AndroidView
import com.github.ajalt.timberkt.Timber
import io.livekit.android.renderer.TextureViewRenderer
import io.livekit.android.room.Room
import io.livekit.android.room.participant.ParticipantListener
import io.livekit.android.room.participant.RemoteParticipant
import io.livekit.android.room.track.RemoteTrackPublication
import io.livekit.android.room.track.Track
import io.livekit.android.room.track.VideoTrack
@Composable
fun ParticipantItem(
room: Room,
participant: RemoteParticipant,
) {
var videoBound by remember(room, participant) { mutableStateOf(false) }
fun getVideoTrack(): VideoTrack? {
return participant
.videoTracks.values
.firstOrNull()?.track as? VideoTrack
}
fun setupVideoIfNeeded(videoTrack: VideoTrack, view: TextureViewRenderer) {
if (videoBound) {
return
}
videoBound = true
Timber.v { "adding renderer to $videoTrack" }
videoTrack.addRenderer(view)
}
AndroidView(
factory = { context ->
TextureViewRenderer(context).apply {
room.initVideoRenderer(this)
}
},
modifier = Modifier.fillMaxSize(),
update = { view ->
participant.listener = object : ParticipantListener {
override fun onTrackSubscribed(
track: Track,
publication: RemoteTrackPublication,
participant: RemoteParticipant
) {
if (track is VideoTrack) {
setupVideoIfNeeded(track, view)
}
}
override fun onTrackUnpublished(
publication: RemoteTrackPublication,
participant: RemoteParticipant
) {
super.onTrackUnpublished(publication, participant)
Timber.e { "Track unpublished" }
}
}
val existingTrack = getVideoTrack()
if (existingTrack != null) {
setupVideoIfNeeded(existingTrack, view)
}
}
)
}