CoilBitmapLoader.kt
Each line, with the release that last changed it.
| 0.5.0 | 1 | package dev.stave.playback |
| 2 | ||
| 3 | import android.content.Context | |
| 4 | import android.graphics.Bitmap | |
| 5 | import android.graphics.BitmapFactory | |
| 6 | import android.net.Uri | |
| 7 | import androidx.media3.common.util.UnstableApi | |
| 8 | import androidx.media3.session.BitmapLoader | |
| 9 | import coil3.ImageLoader | |
| 10 | import coil3.SingletonImageLoader | |
| 11 | import coil3.request.ImageRequest | |
| 12 | import coil3.request.SuccessResult | |
| 13 | import coil3.request.allowHardware | |
| 14 | import coil3.size.Size | |
| 15 | import coil3.toBitmap | |
| 16 | import com.google.common.util.concurrent.Futures | |
| 17 | import com.google.common.util.concurrent.ListenableFuture | |
| 18 | import com.google.common.util.concurrent.SettableFuture | |
| 19 | import kotlinx.coroutines.CoroutineScope | |
| 20 | import kotlinx.coroutines.Dispatchers | |
| 21 | import kotlinx.coroutines.SupervisorJob | |
| 22 | import kotlinx.coroutines.launch | |
| 23 | ||
| 24 | /** | |
| 25 | * BitmapLoader that uses Coil to fetch artwork at a defined target | |
| 26 | * resolution. Replacing the default DataSourceBitmapLoader produces | |
| 27 | * consistently large bitmaps for Auto's now-playing card and the | |
| 28 | * system media notification — the default decodes whatever resolution | |
| 29 | * the URI happens to return, which for local content://albumart can | |
| 30 | * be a 256-px thumbnail and for UPnP varies wildly by server. | |
| 31 | * | |
| 32 | * Target [TARGET_SIZE_PX] is 1024x1024 — the largest size Auto's | |
| 33 | * MediaPlaybackTemplate will display before downscaling, and a sane | |
| 34 | * upper bound for memory usage when caching. | |
| 35 | */ | |
| 36 | @UnstableApi | |
| 37 | class CoilBitmapLoader( | |
| 38 | private val context: Context, | |
| 39 | ) : BitmapLoader { | |
| 40 | ||
| 41 | private val scope = CoroutineScope(SupervisorJob() + Dispatchers.IO) | |
| 42 | private val loader: ImageLoader | |
| 43 | get() = SingletonImageLoader.get(context) | |
| 44 | ||
| 45 | override fun supportsMimeType(mimeType: String): Boolean { | |
| 46 | return mimeType.startsWith("image/") | |
| 47 | } | |
| 48 | ||
| 49 | override fun decodeBitmap(data: ByteArray): ListenableFuture<Bitmap> { | |
| 50 | val future = SettableFuture.create<Bitmap>() | |
| 51 | scope.launch { | |
| 52 | try { | |
| 53 | val bmp = BitmapFactory.decodeByteArray(data, 0, data.size) | |
| 54 | if (bmp != null) future.set(bmp) | |
| 55 | else future.setException(IllegalArgumentException("Failed to decode bitmap from ${data.size} bytes")) | |
| 56 | } catch (t: Throwable) { | |
| 57 | future.setException(t) | |
| 58 | } | |
| 59 | } | |
| 60 | return future | |
| 61 | } | |
| 62 | ||
| 63 | override fun loadBitmap(uri: Uri): ListenableFuture<Bitmap> { | |
| 64 | val future = SettableFuture.create<Bitmap>() | |
| 65 | scope.launch { | |
| 66 | try { | |
| 67 | val request = ImageRequest.Builder(context) | |
| 68 | .data(uri) | |
| 69 | .size(Size(TARGET_SIZE_PX, TARGET_SIZE_PX)) | |
| 70 | .allowHardware(false) | |
| 71 | .build() | |
| 72 | when (val result = loader.execute(request)) { | |
| 73 | is SuccessResult -> future.set(result.image.toBitmap()) | |
| 74 | else -> future.setException(IllegalStateException("Coil failed for $uri")) | |
| 75 | } | |
| 76 | } catch (t: Throwable) { | |
| 77 | future.setException(t) | |
| 78 | } | |
| 79 | } | |
| 80 | return future | |
| 81 | } | |
| 82 | ||
| 83 | companion object { | |
| 84 | const val TARGET_SIZE_PX = 1024 | |
| 85 | } | |
| 86 | } |