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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,110 @@ | ||
| package com.aatorque.stats | ||
|
|
||
| import android.content.ComponentName | ||
| import android.media.MediaMetadata | ||
| import android.media.session.MediaController | ||
| import android.media.session.MediaSessionManager | ||
| import android.media.session.PlaybackState | ||
| import androidx.core.content.ContextCompat | ||
| import androidx.lifecycle.lifecycleScope | ||
| import kotlinx.coroutines.FlowPreview | ||
| import kotlinx.coroutines.flow.MutableSharedFlow | ||
| import kotlinx.coroutines.flow.asSharedFlow | ||
| import kotlinx.coroutines.flow.debounce | ||
| import kotlinx.coroutines.launch | ||
| import timber.log.Timber | ||
|
|
||
| abstract class AlbumArt : CarFragment() { | ||
|
|
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| val registed = HashMap<Int, () -> Unit>() | ||
| private val updateChannel = MutableSharedFlow<MediaMetadata?>() | ||
|
|
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| @OptIn(FlowPreview::class) | ||
| override fun onStart() { | ||
| super.onStart() | ||
| registerMedia() | ||
| lifecycleScope.launch { | ||
| updateChannel.asSharedFlow() | ||
| .debounce(300) | ||
| .collect(this@AlbumArt::onMediaChanged) | ||
| } | ||
| } | ||
|
|
||
| private fun registerMedia() { | ||
| val mediaMan = ContextCompat.getSystemService( | ||
| requireContext(), | ||
| MediaSessionManager::class.java | ||
| ) ?: return | ||
| val component = ComponentName(requireContext(), NotiService::class.java) | ||
| try { | ||
| mediaMan.addOnActiveSessionsChangedListener({ | ||
| updateSessions(it ?: emptyList()) | ||
| }, component) | ||
| updateSessions(mediaMan.getActiveSessions(component)) | ||
| } catch (e: SecurityException) { | ||
| Timber.e("No permission to read media", e) | ||
| } | ||
| } | ||
|
|
||
| override fun onStop() { | ||
| super.onStop() | ||
| updateSessions(emptyList()) | ||
| } | ||
|
|
||
| private fun updateSessions(mediaControllers: List<MediaController>) { | ||
| val found = mediaControllers.map { | ||
| val token = it.sessionToken | ||
| val code = token.hashCode() | ||
| if (!registed.containsKey(code)) { | ||
| val callback = object : MediaController.Callback() { | ||
| override fun onPlaybackStateChanged(state: PlaybackState?) { | ||
| super.onPlaybackStateChanged(state) | ||
| Timber.i("Playback changed event ${state?.state}") | ||
| lifecycleScope.launch { | ||
| if (arrayOf( | ||
| PlaybackState.STATE_PAUSED, | ||
| PlaybackState.STATE_STOPPED | ||
| ).contains(state?.state) | ||
| ) { | ||
| updateChannel.emit(null) | ||
| } else if (isActive(it.playbackState)) { | ||
| updateChannel.emit(it.metadata) | ||
| } | ||
| } | ||
| } | ||
| } | ||
| it.registerCallback(callback) | ||
| registed[code] = { | ||
| it.unregisterCallback(callback) | ||
| registed.remove(code) | ||
| } | ||
| if (isActive(it.playbackState)) { | ||
| lifecycleScope.launch { | ||
| updateChannel.emit(it.metadata) | ||
| } | ||
| } | ||
| } | ||
| code | ||
| }.toSet() | ||
| registed.filterNot { found.contains(it.key) }.forEach { | ||
| it.value() | ||
| } | ||
| } | ||
|
|
||
| open fun isActive(state: PlaybackState?): Boolean { | ||
| return when (state?.state) { | ||
| PlaybackState.STATE_FAST_FORWARDING, | ||
| PlaybackState.STATE_REWINDING, | ||
| PlaybackState.STATE_SKIPPING_TO_PREVIOUS, | ||
| PlaybackState.STATE_SKIPPING_TO_NEXT, | ||
| PlaybackState.STATE_SKIPPING_TO_QUEUE_ITEM, | ||
| PlaybackState.STATE_BUFFERING, | ||
| PlaybackState.STATE_CONNECTING, | ||
| PlaybackState.STATE_PLAYING -> true | ||
|
|
||
| else -> false | ||
| } | ||
| } | ||
|
|
||
| abstract fun onMediaChanged(medadata: MediaMetadata?) | ||
| } |
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