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MusicUtils.kt
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MusicUtils.kt
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package com.iven.musicplayergo.music
import android.annotation.SuppressLint
import android.content.ContentResolver
import android.content.ContentUris
import android.content.res.Resources
import android.database.Cursor
import android.media.MediaExtractor
import android.media.MediaFormat
import android.net.Uri
import android.os.ParcelFileDescriptor
import android.provider.MediaStore
import android.provider.MediaStore.Audio.AudioColumns
import com.iven.musicplayergo.R
import com.iven.musicplayergo.musicLibrary
import com.iven.musicplayergo.player.MediaPlayerHolder
import com.iven.musicplayergo.ui.Utils
import java.io.File
import java.util.*
import java.util.concurrent.TimeUnit
object MusicUtils {
@JvmStatic
fun getContentUri(audioId: Long): Uri {
return ContentUris.withAppendedId(
MediaStore.Audio.Media.EXTERNAL_CONTENT_URI,
audioId
)
}
@JvmStatic
private fun getAudioFileDescriptor(
contentUri: Uri,
contentResolver: ContentResolver
): ParcelFileDescriptor? {
val readOnlyMode = "r"
return contentResolver.openFileDescriptor(contentUri, readOnlyMode)
}
//returns the position in list of the current played album
//pass selected artist from artists adapter and not from current song
//so when played artist is selected the album position will be returned
//if selected artist differs from played artist -1 will be returned
@JvmStatic
fun getPlayingAlbumPosition(
selectedArtist: String?,
mediaPlayerHolder: MediaPlayerHolder
): Int {
return try {
val currentSong = mediaPlayerHolder.currentSong.first
val album = getAlbumFromList(selectedArtist, currentSong?.album)
album.second
} catch (e: Exception) {
e.printStackTrace()
-1
}
}
@JvmStatic
//returns a pair of album and its position given a list of albums
fun getAlbumFromList(artist: String?, album: String?): Pair<Album, Int> {
val albums = musicLibrary.allAlbumsByArtist?.get(artist)
return try {
val position = albums?.indexOfFirst { it.title == album }!!
Pair(albums[position], position)
} catch (e: Exception) {
e.printStackTrace()
Pair(albums?.get(0)!!, 0)
}
}
@JvmStatic
fun getAlbumSongs(artist: String?, album: String?): List<Music>? {
return getAlbumFromList(artist, album).first.music
}
@JvmStatic
fun getSongForIntent(
displayName: String?
): Music? {
return musicLibrary.allSongsUnfiltered.firstOrNull { s -> s.displayName == displayName }
}
@JvmStatic
fun getYearForAlbum(resources: Resources, year: Int): String {
return if (year != 0) year.toString() else resources.getString(R.string.unknown_year)
}
@JvmStatic
fun buildSortedArtistAlbums(
resources: Resources,
artistSongs: List<Music>?
): List<Album> {
val sortedAlbums = mutableListOf<Album>()
artistSongs?.let {
try {
val groupedSongs = it.groupBy { song -> song.album }
groupedSongs.keys.iterator().forEach { album ->
val albumSongs = groupedSongs.getValue(album).toMutableList()
albumSongs.sortBy { song -> song.track }
sortedAlbums.add(
Album(
album,
getYearForAlbum(resources, albumSongs[0].year),
albumSongs,
albumSongs.map { song -> song.duration }.sum()
)
)
}
} catch (e: Exception) {
e.printStackTrace()
}
sortedAlbums.sortBy { album -> album.year }
}
return sortedAlbums
}
@JvmStatic
fun formatSongDuration(duration: Long?, isAlbum: Boolean): String {
val defaultFormat = if (isAlbum) "%02dm:%02ds" else "%02d:%02d"
val hours = TimeUnit.MILLISECONDS.toHours(duration!!)
val minutes = TimeUnit.MILLISECONDS.toMinutes(duration)
val seconds = TimeUnit.MILLISECONDS.toSeconds(duration)
return if (minutes < 60) String.format(
Locale.getDefault(), defaultFormat,
minutes,
seconds - TimeUnit.MINUTES.toSeconds(minutes)
) else
//https://stackoverflow.com/a/9027379
String.format(
"%02dh:%02dm",
hours,
minutes - TimeUnit.HOURS.toMinutes(hours), // The change is in this line
seconds - TimeUnit.MINUTES.toSeconds(minutes)
)
}
@JvmStatic
fun formatSongTrack(trackNumber: Int): Int {
var formatted = trackNumber
if (trackNumber >= 1000) formatted = trackNumber % 1000
return formatted
}
@JvmStatic
@SuppressLint("InlinedApi")
private val COLUMNS = arrayOf(
AudioColumns.ARTIST, // 0
AudioColumns.YEAR, // 1
AudioColumns.TRACK, // 2
AudioColumns.TITLE, // 3
AudioColumns.DISPLAY_NAME, // 4,
AudioColumns.DURATION, //5,
AudioColumns.ALBUM, // 6
getPathColumn(), // 7
AudioColumns._ID //8
)
@JvmStatic
fun getMusicCursor(contentResolver: ContentResolver): Cursor? {
return contentResolver.query(
MediaStore.Audio.Media.EXTERNAL_CONTENT_URI,
COLUMNS, AudioColumns.IS_MUSIC + "=1", null, MediaStore.Audio.Media.DEFAULT_SORT_ORDER
)
}
@JvmStatic
@Suppress("DEPRECATION")
fun getPathColumn(): String {
return if (Utils.isAndroidQ()) AudioColumns.BUCKET_DISPLAY_NAME else AudioColumns.DATA
}
@JvmStatic
fun getBitrate(contentUri: Uri, contentResolver: ContentResolver): Pair<Int, Int>? {
val mediaExtractor = MediaExtractor()
return try {
getAudioFileDescriptor(contentUri, contentResolver)?.use { pfd ->
mediaExtractor.setDataSource(pfd.fileDescriptor)
}
val mediaFormat = mediaExtractor.getTrackFormat(0)
val sampleRate = mediaFormat.getInteger(MediaFormat.KEY_SAMPLE_RATE)
//get bitrate in bps, divide by 1000 to get Kbps
val bitrate = mediaFormat.getInteger(MediaFormat.KEY_BIT_RATE) / 1000
Pair(sampleRate, bitrate)
} catch (e: Exception) {
e.printStackTrace()
null
}
}
@JvmStatic
fun getFolderName(path: String?): String? {
return File(path!!).parentFile?.name
}
}