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NowPlayingNotification.kt
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NowPlayingNotification.kt
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package com.github.libretube.util
import android.app.NotificationManager
import android.app.PendingIntent
import android.app.PendingIntent.FLAG_UPDATE_CURRENT
import android.content.BroadcastReceiver
import android.content.Context
import android.content.Intent
import android.content.IntentFilter
import android.graphics.Bitmap
import android.os.Build
import android.os.Bundle
import android.support.v4.media.session.MediaSessionCompat
import android.support.v4.media.session.PlaybackStateCompat
import android.util.Log
import androidx.annotation.DrawableRes
import androidx.core.app.NotificationCompat
import androidx.core.app.PendingIntentCompat
import androidx.core.content.getSystemService
import androidx.core.graphics.drawable.toBitmap
import androidx.media.app.NotificationCompat.MediaStyle
import androidx.media3.common.MediaMetadata
import androidx.media3.common.Player
import androidx.media3.exoplayer.ExoPlayer
import coil.request.ImageRequest
import com.github.libretube.R
import com.github.libretube.constants.IntentData
import com.github.libretube.constants.PLAYER_CHANNEL_ID
import com.github.libretube.constants.PLAYER_NOTIFICATION_ID
import com.github.libretube.extensions.TAG
import com.github.libretube.extensions.seekBy
import com.github.libretube.extensions.toMediaMetadataCompat
import com.github.libretube.helpers.BackgroundHelper
import com.github.libretube.helpers.ImageHelper
import com.github.libretube.helpers.PlayerHelper
import com.github.libretube.obj.PlayerNotificationData
import com.github.libretube.ui.activities.MainActivity
@androidx.annotation.OptIn(androidx.media3.common.util.UnstableApi::class)
class NowPlayingNotification(
private val context: Context,
private val player: ExoPlayer,
private val isBackgroundPlayerNotification: Boolean
) {
private var videoId: String? = null
private val nManager = context.getSystemService<NotificationManager>()!!
/**
* The metadata of the current playing song (thumbnail, title, uploader)
*/
private var notificationData: PlayerNotificationData? = null
/**
* The [MediaSessionCompat] for the [notificationData].
*/
private lateinit var mediaSession: MediaSessionCompat
/**
* The [NotificationCompat.Builder] to load the [mediaSession] content on it.
*/
private var notificationBuilder: NotificationCompat.Builder? = null
/**
* The [Bitmap] which represents the background / thumbnail of the notification
*/
private var notificationBitmap: Bitmap? = null
private fun loadCurrentLargeIcon() {
if (DataSaverMode.isEnabled(context)) return
if (notificationBitmap == null) {
enqueueThumbnailRequest {
createOrUpdateNotification()
}
}
}
private fun createCurrentContentIntent(): PendingIntent {
// starts a new MainActivity Intent when the player notification is clicked
// it doesn't start a completely new MainActivity because the MainActivity's launchMode
// is set to "singleTop" in the AndroidManifest (important!!!)
// that's the only way to launch back into the previous activity (e.g. the player view
val intent = Intent(context, MainActivity::class.java).apply {
if (isBackgroundPlayerNotification) {
putExtra(IntentData.openAudioPlayer, true)
addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP)
}
}
return PendingIntentCompat.getActivity(context, 0, intent, FLAG_UPDATE_CURRENT, false)
}
private fun createDeleteIntent(): PendingIntent {
val intent = Intent(STOP).setPackage(context.packageName)
return PendingIntentCompat
.getBroadcast(context, 1, intent, PendingIntent.FLAG_CANCEL_CURRENT, false)
}
private fun enqueueThumbnailRequest(callback: (Bitmap) -> Unit) {
// If playing a downloaded file, show the downloaded thumbnail instead of loading an
// online image
notificationData?.thumbnailPath?.let { path ->
ImageHelper.getDownloadedImage(context, path)?.let {
notificationBitmap = processBitmap(it)
callback.invoke(notificationBitmap!!)
}
return
}
val request = ImageRequest.Builder(context)
.data(notificationData?.thumbnailUrl)
.target {
notificationBitmap = processBitmap(it.toBitmap())
callback.invoke(notificationBitmap!!)
}
.build()
// enqueue the thumbnail loading request
ImageHelper.imageLoader.enqueue(request)
}
private fun processBitmap(bitmap: Bitmap): Bitmap {
return if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
bitmap
} else {
ImageHelper.getSquareBitmap(bitmap)
}
}
private val legacyNotificationButtons
get() = listOf(
createNotificationAction(R.drawable.ic_prev_outlined, PREV),
createNotificationAction(
if (player.isPlaying) R.drawable.ic_pause else R.drawable.ic_play,
PLAY_PAUSE
),
createNotificationAction(R.drawable.ic_next_outlined, NEXT),
createNotificationAction(R.drawable.ic_rewind_md, REWIND),
createNotificationAction(R.drawable.ic_forward_md, FORWARD)
)
private fun createNotificationAction(
drawableRes: Int,
actionName: String
): NotificationCompat.Action {
val intent = Intent(actionName).setPackage(context.packageName)
val pendingIntent = PendingIntentCompat
.getBroadcast(context, 1, intent, PendingIntent.FLAG_CANCEL_CURRENT, false)
return NotificationCompat.Action.Builder(drawableRes, actionName, pendingIntent).build()
}
private fun createMediaSessionAction(
@DrawableRes drawableRes: Int,
actionName: String
): PlaybackStateCompat.CustomAction {
return PlaybackStateCompat.CustomAction.Builder(actionName, actionName, drawableRes).build()
}
/**
* Creates a [MediaSessionCompat] for the player
*/
private fun createMediaSession() {
if (this::mediaSession.isInitialized) return
val sessionCallback = object : MediaSessionCompat.Callback() {
override fun onSkipToNext() {
handlePlayerAction(NEXT)
super.onSkipToNext()
}
override fun onSkipToPrevious() {
handlePlayerAction(PREV)
super.onSkipToPrevious()
}
override fun onRewind() {
handlePlayerAction(REWIND)
super.onRewind()
}
override fun onFastForward() {
handlePlayerAction(FORWARD)
super.onFastForward()
}
override fun onPlay() {
handlePlayerAction(PLAY_PAUSE)
super.onPlay()
}
override fun onPause() {
handlePlayerAction(PLAY_PAUSE)
super.onPause()
}
override fun onStop() {
handlePlayerAction(STOP)
super.onStop()
}
override fun onSeekTo(pos: Long) {
player.seekTo(pos)
super.onSeekTo(pos)
}
override fun onCustomAction(action: String, extras: Bundle?) {
handlePlayerAction(action)
super.onCustomAction(action, extras)
}
}
mediaSession = MediaSessionCompat(context, TAG())
mediaSession.setCallback(sessionCallback)
updateSessionMetadata()
updateSessionPlaybackState()
val playerStateListener = object : Player.Listener {
override fun onIsPlayingChanged(isPlaying: Boolean) {
super.onIsPlayingChanged(isPlaying)
updateSessionPlaybackState(isPlaying = isPlaying)
}
override fun onIsLoadingChanged(isLoading: Boolean) {
super.onIsLoadingChanged(isLoading)
if (!isLoading) {
updateSessionMetadata()
}
updateSessionPlaybackState(isLoading = isLoading)
}
override fun onMediaMetadataChanged(mediaMetadata: MediaMetadata) {
super.onMediaMetadataChanged(mediaMetadata)
updateSessionMetadata(mediaMetadata)
}
}
player.addListener(playerStateListener)
}
private fun updateSessionMetadata(metadata: MediaMetadata? = null) {
val data = metadata ?: player.mediaMetadata
val newMetadata = data.toMediaMetadataCompat(player.duration, notificationBitmap)
mediaSession.setMetadata(newMetadata)
}
private fun updateSessionPlaybackState(isPlaying: Boolean? = null, isLoading: Boolean? = null) {
val loading = isLoading == true || (isPlaying == false && player.isLoading)
val newPlaybackState = if (loading) {
createPlaybackState(PlaybackStateCompat.STATE_BUFFERING)
} else if (isPlaying ?: player.isPlaying) {
createPlaybackState(PlaybackStateCompat.STATE_PLAYING)
} else {
createPlaybackState(PlaybackStateCompat.STATE_PAUSED)
}
mediaSession.setPlaybackState(newPlaybackState)
}
private fun createPlaybackState(@PlaybackStateCompat.State state: Int): PlaybackStateCompat {
val stateActions = PlaybackStateCompat.ACTION_SKIP_TO_NEXT or
PlaybackStateCompat.ACTION_SKIP_TO_PREVIOUS or
PlaybackStateCompat.ACTION_REWIND or
PlaybackStateCompat.ACTION_FAST_FORWARD or
PlaybackStateCompat.ACTION_PLAY_PAUSE or
PlaybackStateCompat.ACTION_PAUSE or
PlaybackStateCompat.ACTION_SEEK_TO
return PlaybackStateCompat.Builder()
.setActions(stateActions)
.addCustomAction(createMediaSessionAction(R.drawable.ic_rewind_md, REWIND))
.addCustomAction(createMediaSessionAction(R.drawable.ic_forward_md, FORWARD))
.setState(state, player.currentPosition, player.playbackParameters.speed)
.build()
}
private fun handlePlayerAction(action: String) {
when (action) {
NEXT -> {
if (PlayingQueue.hasNext()) {
PlayingQueue.onQueueItemSelected(
PlayingQueue.currentIndex() + 1
)
}
}
PREV -> {
if (PlayingQueue.hasPrev()) {
PlayingQueue.onQueueItemSelected(
PlayingQueue.currentIndex() - 1
)
}
}
REWIND -> {
player.seekBy(-PlayerHelper.seekIncrement)
}
FORWARD -> {
player.seekBy(PlayerHelper.seekIncrement)
}
PLAY_PAUSE -> {
if (player.isPlaying) player.pause() else player.play()
}
STOP -> {
Log.e("stop", "stop")
if (isBackgroundPlayerNotification) {
BackgroundHelper.stopBackgroundPlay(context)
}
}
}
}
/**
* Updates or creates the [notificationBuilder]
*/
fun updatePlayerNotification(
videoId: String,
data: PlayerNotificationData
) {
this.videoId = videoId
this.notificationData = data
// reset the thumbnail bitmap in order to become reloaded for the new video
this.notificationBitmap = null
loadCurrentLargeIcon()
if (notificationBuilder == null) {
createMediaSession()
createNotificationBuilder()
createActionReceiver()
// update the notification each time the player continues playing or pauses
player.addListener(object : Player.Listener {
override fun onIsPlayingChanged(isPlaying: Boolean) {
createOrUpdateNotification()
super.onIsPlayingChanged(isPlaying)
}
})
}
createOrUpdateNotification()
}
/**
* Initializes the [notificationBuilder] attached to the [player] and shows it.
*/
private fun createNotificationBuilder() {
notificationBuilder = NotificationCompat.Builder(context, PLAYER_CHANNEL_ID)
.setSmallIcon(R.drawable.ic_launcher_lockscreen)
.setContentIntent(createCurrentContentIntent())
.setDeleteIntent(createDeleteIntent())
.setStyle(
MediaStyle()
.setMediaSession(mediaSession.sessionToken)
.setShowActionsInCompactView(1)
)
}
private fun createOrUpdateNotification() {
if (notificationBuilder == null) return
val notification = notificationBuilder!!
.setContentTitle(notificationData?.title)
.setContentText(notificationData?.uploaderName)
.setLargeIcon(notificationBitmap)
.clearActions()
.apply {
legacyNotificationButtons.forEach {
addAction(it)
}
}
.build()
updateSessionMetadata()
nManager.notify(PLAYER_NOTIFICATION_ID, notification)
}
private val notificationActionReceiver = object : BroadcastReceiver() {
override fun onReceive(context: Context, intent: Intent) {
handlePlayerAction(intent.action ?: return)
}
}
private fun createActionReceiver() {
listOf(PREV, NEXT, REWIND, FORWARD, PLAY_PAUSE, STOP).forEach {
context.registerReceiver(notificationActionReceiver, IntentFilter(it))
}
}
/**
* Destroy the [NowPlayingNotification]
*/
fun destroySelfAndPlayer() {
mediaSession.release()
player.stop()
player.release()
runCatching {
context.unregisterReceiver(notificationActionReceiver)
}
nManager.cancel(PLAYER_NOTIFICATION_ID)
}
companion object {
private const val PREV = "prev"
private const val NEXT = "next"
private const val REWIND = "rewind"
private const val FORWARD = "forward"
private const val PLAY_PAUSE = "play_pause"
private const val STOP = "stop"
}
}