new: display playback progress with a progress bar

core/audioplayer/src/androidMain/kotlin/fr/ajaury/gwenedeg/player/AndroidAudioPlayer.kt

@@ -1,6 +1,7 @@
 package fr.ajaury.gwenedeg.player
 
 import android.content.Context
+import androidx.media3.common.C
 import androidx.media3.common.MediaItem
 import androidx.media3.common.Player
 import androidx.media3.exoplayer.ExoPlayer
@@ -38,7 +39,15 @@ class AndroidAudioPlayer(
         )
     }
 
-    override fun currentPosition(): Duration = player.currentPosition.coerceAtLeast(0).milliseconds
+    override val currentPosition: Duration
+        get() = player.currentPosition.coerceAtLeast(0).milliseconds
+
+    override val duration: Duration
+        get() = player.duration
+            .takeIf { it != C.TIME_UNSET }
+            ?.coerceAtLeast(0)
+            ?.milliseconds
+            ?: 0.milliseconds
 
     override fun load(uri: String) {
         val mediaItem = MediaItem.fromUri(uri)

core/audioplayer/src/commonMain/kotlin/fr/ajaury/gwenedeg/player/AudioPlayer.kt

@@ -6,7 +6,9 @@ import kotlin.time.Duration
 interface AudioPlayer {
     val playbackState: StateFlow<PlaybackState>
 
-    fun currentPosition(): Duration
+    val currentPosition: Duration
+
+    val duration: Duration
 
     fun play()
 

core/audioplayer/src/iosMain/kotlin/fr/ajaury/gwenedeg/player/IosAudioPlayer.kt

@@ -7,7 +7,9 @@ import kotlinx.coroutines.flow.asStateFlow
 import platform.AVFoundation.AVPlayer
 import platform.AVFoundation.AVPlayerItem
 import platform.AVFoundation.AVPlayerItemDidPlayToEndTimeNotification
+import platform.AVFoundation.currentItem
 import platform.AVFoundation.currentTime
+import platform.AVFoundation.duration
 import platform.AVFoundation.pause
 import platform.AVFoundation.play
 import platform.AVFoundation.replaceCurrentItemWithPlayerItem
@@ -28,11 +30,20 @@ class IosAudioPlayer : AudioPlayer {
     override val playbackState: StateFlow<PlaybackState> = _playbackState.asStateFlow()
 
     @OptIn(ExperimentalForeignApi::class)
-    override fun currentPosition(): Duration {
-        val player = player ?: return 0.milliseconds
-        val seconds = CMTimeGetSeconds(player.currentTime()).takeIf { !it.isNaN() }
-        return seconds?.seconds ?: 0.milliseconds
-    }
+    override val currentPosition: Duration
+        get() {
+            val player = player ?: return 0.milliseconds
+            val seconds = CMTimeGetSeconds(player.currentTime()).takeIf { !it.isNaN() }
+            return seconds?.seconds ?: 0.milliseconds
+        }
+
+    @OptIn(ExperimentalForeignApi::class)
+    override val duration: Duration
+        get() {
+            val item = player?.currentItem ?: return 0.milliseconds
+            val seconds = CMTimeGetSeconds(item.duration).takeIf { it.isFinite() }
+            return seconds?.seconds ?: 0.milliseconds
+        }
 
     @OptIn(ExperimentalForeignApi::class)
     override fun load(uri: String) {

core/audioplayer/src/jvmMain/kotlin/fr/ajaury/gwenedeg/player/JvmAudioPlayer.kt

@@ -27,7 +27,11 @@ class JvmAudioPlayer : AudioPlayer {
     private val _playbackState = MutableStateFlow(PlaybackState.IDLE)
     override val playbackState: StateFlow<PlaybackState> = _playbackState.asStateFlow()
 
-    override fun currentPosition(): Duration = (clip?.microsecondPosition ?: 0L).microseconds
+    override val currentPosition: Duration
+        get() = (clip?.microsecondPosition ?: 0L).microseconds
+
+    override val duration: Duration
+        get() = (clip?.microsecondLength ?: 0L).microseconds
 
     override fun load(uri: String) {
         release()

core/audioplayer/src/webMain/kotlin/fr/ajaury/gwenedeg/player/WebAudioPlayer.kt

@@ -14,7 +14,11 @@ class WebAudioPlayer : AudioPlayer {
     private val _playbackState = MutableStateFlow(PlaybackState.IDLE)
     override val playbackState: StateFlow<PlaybackState> = _playbackState.asStateFlow()
 
-    override fun currentPosition(): Duration = (audio?.currentTime ?: 0.0).seconds
+    override val currentPosition: Duration
+        get() = (audio?.currentTime ?: 0.0).seconds
+
+    override val duration: Duration
+        get() = (audio?.duration?.takeIf { it.isFinite() } ?: 0.0).seconds
 
     override fun load(uri: String) {
         release()