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music: group artists case-insensitively [#66]

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Group up album artists case-insensitively.

Music files from the same artist may format the artist differently, such as being
in uppercase/lowercase forms. If we have already built an artist that has a
functionally identical name to another artist, then simply merge the artists
instead of keeping them separate.
This commit is contained in:
OxygenCobalt 2022-01-30 17:29:42 -07:00
parent 50a2305f63
commit 9514f17bc7
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GPG key ID: 37DBE3621FE9AD47
1 changed files with 24 additions and 11 deletions
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35
app/src/main/java/org/oxycblt/auxio/music/MusicLoader.kt
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@ -145,6 +145,7 @@ class MusicLoader {
val artist = cursor.getString(artistIndex).let {
if (it != MediaStore.UNKNOWN_STRING) it else null
}
val albumArtist = cursor.getStringOrNull(albumArtistIndex)
val year = cursor.getInt(yearIndex)
@ -198,21 +199,33 @@ class MusicLoader {
val artists = mutableListOf<Artist>()
val albumsByArtist = albums.groupBy { it.artistName }
albumsByArtist.forEach { entry ->
val resolvedName = if (entry.key == MediaStore.UNKNOWN_STRING) {
context.getString(R.string.def_artist)
} else {
entry.key
for (entry in albumsByArtist) {
val name = entry.key
val resolvedName = when (name) {
MediaStore.UNKNOWN_STRING -> context.getString(R.string.def_artist)
else -> name
}
val artistAlbums = entry.value.toMutableList()
// Music files from the same artist may format the artist differently, such as being
// in uppercase/lowercase forms. If we have already built an artist that has a
// functionally identical name to this one, then simply merge the artists instead
// of removing them.
val previousArtistIndex = artists.indexOfFirst { artist ->
artist.name.lowercase() == name.lowercase()
}
// In most cases, MediaStore artist IDs are unreliable or omitted for speed.
// Use the hashCode of the artist name as our ID and move on.
artists.add(
Artist(
entry.key.hashCode().toLong(), entry.key,
resolvedName, entry.value
if (previousArtistIndex > -1) {
val previousArtist = artists[previousArtistIndex]
artists[previousArtistIndex] = Artist(
previousArtist.name.hashCode().toLong(), previousArtist.name,
previousArtist.resolvedName, previousArtist.albums + artistAlbums
)
)
} else {
artists.add(Artist(name.hashCode().toLong(), name, resolvedName, artistAlbums))
}
}
return artists
@ -237,8 +250,8 @@ class MusicLoader {
val nameIndex = cursor.getColumnIndexOrThrow(MediaStore.Audio.Genres.NAME)
while (cursor.moveToNext()) {
// No non-broken genre would be missing a name.
val id = cursor.getLong(idIndex)
// No non-broken genre would be missing a name.
val name = cursor.getStringOrNull(nameIndex) ?: continue
val resolvedName = when (name) {
MediaStore.UNKNOWN_STRING -> context.getString(R.string.def_genre)