main.lavalink.server.player.LavalinkPlayer.kt Maven / Gradle / Ivy
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/*
* Copyright (c) 2021 Freya Arbjerg and contributors
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package lavalink.server.player
import com.sedmelluq.discord.lavaplayer.format.StandardAudioDataFormats
import com.sedmelluq.discord.lavaplayer.player.AudioPlayer
import com.sedmelluq.discord.lavaplayer.player.AudioPlayerManager
import com.sedmelluq.discord.lavaplayer.player.event.AudioEventAdapter
import com.sedmelluq.discord.lavaplayer.track.AudioTrack
import com.sedmelluq.discord.lavaplayer.track.AudioTrackEndReason
import com.sedmelluq.discord.lavaplayer.track.playback.AudioFrame
import com.sedmelluq.discord.lavaplayer.track.playback.MutableAudioFrame
import dev.arbjerg.lavalink.api.AudioPluginInfoModifier
import dev.arbjerg.lavalink.api.IPlayer
import io.netty.buffer.ByteBuf
import lavalink.server.config.ServerConfig
import lavalink.server.io.SocketContext
import lavalink.server.io.SocketServer.Companion.sendPlayerUpdate
import lavalink.server.player.filters.FilterChain
import moe.kyokobot.koe.MediaConnection
import moe.kyokobot.koe.media.OpusAudioFrameProvider
import java.nio.ByteBuffer
import java.util.concurrent.ScheduledFuture
import java.util.concurrent.TimeUnit
class LavalinkPlayer(
override val socketContext: SocketContext,
override val guildId: Long,
private val serverConfig: ServerConfig,
audioPlayerManager: AudioPlayerManager,
pluginInfoModifiers: List
) : AudioEventAdapter(), IPlayer {
private val buffer = ByteBuffer.allocate(StandardAudioDataFormats.DISCORD_OPUS.maximumChunkSize())
private val mutableFrame = MutableAudioFrame().apply { setBuffer(buffer) }
val audioLossCounter = AudioLossCounter()
var endMarkerHit = false
var filters: FilterChain = FilterChain()
set(value) {
audioPlayer.setFilterFactory(value.takeIf { it.isEnabled })
field = value
}
override val audioPlayer: AudioPlayer = audioPlayerManager.createPlayer().also {
it.addListener(this)
it.addListener(EventEmitter(audioPlayerManager, this, pluginInfoModifiers))
it.addListener(audioLossCounter)
}
private var updateFuture: ScheduledFuture<*>? = null
override val isPlaying: Boolean
get() = audioPlayer.playingTrack != null && !audioPlayer.isPaused
override val track: AudioTrack?
get() = audioPlayer.playingTrack
fun destroy() {
audioPlayer.destroy()
}
fun provideTo(connection: MediaConnection) {
connection.audioSender = Provider(connection)
}
override fun play(track: AudioTrack) {
audioPlayer.playTrack(track)
sendPlayerUpdate(socketContext, this)
}
override fun stop() {
audioPlayer.stopTrack()
}
override fun setPause(pause: Boolean) {
audioPlayer.isPaused = pause
}
override fun seekTo(position: Long) {
val track = audioPlayer.playingTrack ?: throw RuntimeException("Can't seek when not playing anything")
track.position = position
}
override fun setVolume(volume: Int) {
audioPlayer.volume = volume
}
override fun onTrackEnd(player: AudioPlayer, track: AudioTrack, endReason: AudioTrackEndReason) {
updateFuture!!.cancel(false)
}
override fun onTrackStart(player: AudioPlayer, track: AudioTrack) {
if (updateFuture?.isCancelled == false) {
return
}
updateFuture = socketContext.playerUpdateService.scheduleAtFixedRate(
{ sendPlayerUpdate(socketContext, this) },
0,
serverConfig.playerUpdateInterval.toLong(),
TimeUnit.SECONDS
)
}
private inner class Provider(connection: MediaConnection?) : OpusAudioFrameProvider(connection) {
override fun canProvide() = audioPlayer.provide(mutableFrame).also { provided ->
if (!provided) {
audioLossCounter.onLoss()
}
}
override fun retrieveOpusFrame(buf: ByteBuf) {
audioLossCounter.onSuccess()
buf.writeBytes(buffer.flip())
}
}
}