Add album art loading

Add album art loading by decoding the album art URI into bitmaps for each album. I may use glide in the future if just using a bitmap isnt enough, but currently this works.

app/src/main/java/org/oxycblt/auxio/library/LibraryFragment.kt

@@ -10,6 +10,7 @@ import androidx.fragment.app.Fragment
 import androidx.lifecycle.ViewModelProvider
 import org.oxycblt.auxio.R
 import org.oxycblt.auxio.databinding.FragmentLibraryBinding
+import org.oxycblt.auxio.music.MusicRepository
 
 class LibraryFragment : Fragment() {
 
@@ -28,6 +29,10 @@ class LibraryFragment : Fragment() {
 
         libraryModel
 
+        val albums = MusicRepository.getInstance().albums.value
+
+        binding.testAlbum.setImageBitmap(albums?.get((0..albums.size).random())?.cover)
+
         Log.d(this::class.simpleName, "Fragment created.")
 
         return binding.root

app/src/main/java/org/oxycblt/auxio/music/MusicRepository.kt

@@ -6,12 +6,12 @@ import androidx.lifecycle.LiveData
 import androidx.lifecycle.MutableLiveData
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.withContext
-import org.oxycblt.auxio.music.processing.MusicLoader
-import org.oxycblt.auxio.music.processing.MusicLoaderResponse
-import org.oxycblt.auxio.music.processing.MusicSorter
 import org.oxycblt.auxio.music.models.Album
 import org.oxycblt.auxio.music.models.Artist
 import org.oxycblt.auxio.music.models.Song
+import org.oxycblt.auxio.music.processing.MusicLoader
+import org.oxycblt.auxio.music.processing.MusicLoaderResponse
+import org.oxycblt.auxio.music.processing.MusicSorter
 
 // Storage for music data.
 class MusicRepository {

app/src/main/java/org/oxycblt/auxio/music/MusicUtils.kt

@@ -47,3 +47,10 @@ fun Long.toURI(): Uri {
         this
     )
 }
+
+fun Long.toAlbumArtURI(): Uri {
+    return ContentUris.withAppendedId(
+        Uri.parse("content://media/external/audio/albumart"),
+        this
+    )
+}

app/src/main/java/org/oxycblt/auxio/music/models/Album.kt

@@ -1,10 +1,13 @@
 package org.oxycblt.auxio.music.models
 
+import android.graphics.Bitmap
+
 // Abstraction for Song
 data class Album(
     val id: Long = 0L,
     val title: String = "",
     val artistName: String = "",
+    val cover: Bitmap? = null,
     val year: Int = 0,
     var numSongs: Int = 0
 ) {

app/src/main/java/org/oxycblt/auxio/music/processing/MusicLoader.kt

@@ -3,6 +3,10 @@ package org.oxycblt.auxio.music.processing
 import android.app.Application
 import android.content.ContentResolver
 import android.database.Cursor
+import android.graphics.Bitmap
+import android.graphics.ImageDecoder
+import android.os.Build
+import android.provider.MediaStore
 import android.provider.MediaStore.Audio.Albums
 import android.provider.MediaStore.Audio.Artists
 import android.provider.MediaStore.Audio.Genres
@@ -13,6 +17,7 @@ import org.oxycblt.auxio.music.models.Album
 import org.oxycblt.auxio.music.models.Artist
 import org.oxycblt.auxio.music.models.Genre
 import org.oxycblt.auxio.music.models.Song
+import org.oxycblt.auxio.music.toAlbumArtURI
 
 enum class MusicLoaderResponse {
     DONE, FAILURE, NO_MUSIC
@@ -188,10 +193,23 @@ class MusicLoader(private val app: Application) {
                 val year = cursor.getInt(yearIndex)
                 val numSongs = cursor.getInt(numIndex)
 
+                val artUri = id.toAlbumArtURI()
+                var cover: Bitmap? = null
+
+                // Get the album art through either ImageDecoder or MediaStore depending on the
+                // version.
+                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
+                    cover = ImageDecoder.decodeBitmap(
+                        ImageDecoder.createSource(resolver, artUri)
+                    )
+                } else {
+                    cover = MediaStore.Images.Media.getBitmap(resolver, artUri)
+                }
+
                 albums.add(
                     Album(
                         id, name, artist,
-                        year, numSongs
+                        cover, year, numSongs
                     )
                 )
             }

app/src/main/res/layout/fragment_library.xml

@@ -17,5 +17,14 @@
             app:layout_constraintTop_toTopOf="parent"
             app:title="@string/title_library_fragment" />
 
+        <ImageView
+            android:id="@+id/testAlbum"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@+id/toolbar" />
+
     </androidx.constraintlayout.widget.ConstraintLayout>
 </layout>