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[AV][Android] Fix AV progress update (expo#7193)
Co-Authored-By: Bartłomiej Bukowski <bartlomiejbukowski.b@gmail.com>
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13 changes: 13 additions & 0 deletions
13
android/src/main/java/expo/modules/av/progress/AndroidLooperTimeMachine.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,13 @@ | ||
| package expo.modules.av.progress | ||
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| import android.os.Handler | ||
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| class AndroidLooperTimeMachine : TimeMachine { | ||
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| override fun scheduleAt(intervalMillis: Long, callback: TimeMachineTick) { | ||
| Handler().postDelayed(callback, intervalMillis) | ||
| } | ||
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| override val time: Long | ||
| get() = System.currentTimeMillis() | ||
| } |
67 changes: 67 additions & 0 deletions
67
android/src/main/java/expo/modules/av/progress/ProgressLooper.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,67 @@ | ||
| package expo.modules.av.progress | ||
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| typealias TimeMachineTick = () -> Unit | ||
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| interface TimeMachine { | ||
| fun scheduleAt(intervalMillis: Long, callback: TimeMachineTick) | ||
| val time: Long | ||
| } | ||
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| typealias PlayerProgressListener = () -> Unit | ||
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| class ProgressLooper(private val timeMachine: TimeMachine) { | ||
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| private var interval = 0L | ||
| private var nextExpectedTick = -1L | ||
| private var waiting = false | ||
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| private var shouldLoop: Boolean | ||
| get() = interval > 0 && nextExpectedTick >= 0 && !waiting | ||
| set(value) { | ||
| if (!value) { | ||
| interval = 0L | ||
| nextExpectedTick = -1L | ||
| waiting = false | ||
| } | ||
| } | ||
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| private var listener: PlayerProgressListener? = null | ||
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| fun setListener(listener: PlayerProgressListener) { | ||
| this.listener = listener | ||
| } | ||
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| fun loop(interval: Long, listener: PlayerProgressListener) { | ||
| this.listener = listener | ||
| this.interval = interval | ||
| scheduleNextTick() | ||
| } | ||
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| fun stopLooping() { | ||
| this.shouldLoop = false | ||
| this.listener = null | ||
| } | ||
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| private fun scheduleNextTick() { | ||
| if (nextExpectedTick == -1L) { | ||
| nextExpectedTick = timeMachine.time | ||
| } | ||
| if (shouldLoop) { | ||
| nextExpectedTick += calculateNextInterval() | ||
| waiting = true | ||
| timeMachine.scheduleAt(nextExpectedTick - timeMachine.time) { | ||
| waiting = false | ||
| listener?.invoke() | ||
| scheduleNextTick() | ||
| } | ||
| } | ||
| } | ||
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| private fun calculateNextInterval() = | ||
| if (nextExpectedTick > timeMachine.time) { | ||
| interval | ||
| } else { | ||
| (((timeMachine.time - nextExpectedTick) / interval) + 1) * interval | ||
| } | ||
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| } |
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