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Integrate with libass-android to support SSA/ASS subtitles in ExoPlayer (#569)
## Description Add better ASS/SSA support to ExoPlayer by using [`libass-android`](https://github.com/peerless2012/libass-android). This is enabled with the "Use libass for ASS subtitles" advanced settings for ExoPlayer. It is enabled by default. ### Related issues Related to #22
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Ray
GitHub
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8 changed files with 573 additions and 512 deletions
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@ -10,22 +10,28 @@ import androidx.datastore.core.DataStore
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import androidx.media3.common.C
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import androidx.media3.common.Player
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import androidx.media3.common.util.UnstableApi
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import androidx.media3.datasource.DefaultDataSource
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import androidx.media3.exoplayer.DefaultRenderersFactory
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import androidx.media3.exoplayer.ExoPlayer
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import androidx.media3.exoplayer.Renderer
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import androidx.media3.exoplayer.RenderersFactory
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import androidx.media3.exoplayer.mediacodec.MediaCodecSelector
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import androidx.media3.exoplayer.source.DefaultMediaSourceFactory
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import androidx.media3.exoplayer.video.MediaCodecVideoRenderer
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import androidx.media3.exoplayer.video.VideoRendererEventListener
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import com.github.damontecres.wholphin.preferences.AppPreference
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import androidx.media3.extractor.DefaultExtractorsFactory
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import com.github.damontecres.wholphin.preferences.AppPreferences
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import com.github.damontecres.wholphin.preferences.MediaExtensionStatus
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import com.github.damontecres.wholphin.preferences.PlaybackPreferences
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import com.github.damontecres.wholphin.preferences.PlayerBackend
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import com.github.damontecres.wholphin.util.mpv.MpvPlayer
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import dagger.hilt.android.qualifiers.ApplicationContext
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import io.github.peerless2012.ass.media.AssHandler
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import io.github.peerless2012.ass.media.factory.AssRenderersFactory
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import io.github.peerless2012.ass.media.kt.withAssMkvSupport
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import io.github.peerless2012.ass.media.parser.AssSubtitleParserFactory
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import io.github.peerless2012.ass.media.type.AssRenderType
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import kotlinx.coroutines.Dispatchers
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import kotlinx.coroutines.flow.firstOrNull
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import kotlinx.coroutines.runBlocking
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import kotlinx.coroutines.withContext
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import timber.log.Timber
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import java.lang.reflect.Constructor
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@ -46,71 +52,17 @@ class PlayerFactory
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var currentPlayer: Player? = null
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private set
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fun createVideoPlayer(): Player {
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if (currentPlayer?.isReleased == false) {
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Timber.w("Player was not released before trying to create a new one!")
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currentPlayer?.release()
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}
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val prefs = runBlocking { appPreferences.data.firstOrNull()?.playbackPreferences }
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val backend = prefs?.playerBackend ?: AppPreference.PlayerBackendPref.defaultValue
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val newPlayer =
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when (backend) {
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PlayerBackend.PREFER_MPV,
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PlayerBackend.MPV,
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-> {
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val enableHardwareDecoding =
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prefs?.mpvOptions?.enableHardwareDecoding
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?: AppPreference.MpvHardwareDecoding.defaultValue
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val useGpuNext =
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prefs?.mpvOptions?.useGpuNext
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?: AppPreference.MpvGpuNext.defaultValue
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MpvPlayer(context, enableHardwareDecoding, useGpuNext)
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.apply {
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playWhenReady = true
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}
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}
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PlayerBackend.EXO_PLAYER,
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PlayerBackend.UNRECOGNIZED,
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-> {
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val extensions = prefs?.overrides?.mediaExtensionsEnabled
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val decodeAv1 = prefs?.overrides?.decodeAv1 == true
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Timber.v("extensions=$extensions")
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val rendererMode =
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when (extensions) {
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MediaExtensionStatus.MES_FALLBACK -> DefaultRenderersFactory.EXTENSION_RENDERER_MODE_ON
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MediaExtensionStatus.MES_PREFERRED -> DefaultRenderersFactory.EXTENSION_RENDERER_MODE_PREFER
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MediaExtensionStatus.MES_DISABLED -> DefaultRenderersFactory.EXTENSION_RENDERER_MODE_OFF
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else -> DefaultRenderersFactory.EXTENSION_RENDERER_MODE_ON
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}
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ExoPlayer
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.Builder(context)
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.setRenderersFactory(
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WholphinRenderersFactory(context, decodeAv1)
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.setEnableDecoderFallback(true)
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.setExtensionRendererMode(rendererMode),
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).build()
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.apply {
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playWhenReady = true
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}
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}
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}
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currentPlayer = newPlayer
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return newPlayer
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}
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suspend fun createVideoPlayer(
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backend: PlayerBackend,
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prefs: PlaybackPreferences,
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): Player {
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): PlayerCreation {
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withContext(Dispatchers.Main) {
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if (currentPlayer?.isReleased == false) {
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Timber.w("Player was not released before trying to create a new one!")
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currentPlayer?.release()
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}
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}
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var assHandler: AssHandler? = null
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val newPlayer =
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when (backend) {
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PlayerBackend.PREFER_MPV,
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@ -125,8 +77,9 @@ class PlayerFactory
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PlayerBackend.UNRECOGNIZED,
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-> {
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val extensions = prefs.overrides.mediaExtensionsEnabled
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val directPlayAss = prefs.overrides.directPlayAss
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val decodeAv1 = prefs.overrides.decodeAv1
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Timber.v("extensions=$extensions")
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Timber.v("extensions=$extensions, directPlayAss=$directPlayAss")
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val rendererMode =
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when (extensions) {
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MediaExtensionStatus.MES_FALLBACK -> DefaultRenderersFactory.EXTENSION_RENDERER_MODE_ON
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@ -134,17 +87,42 @@ class PlayerFactory
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MediaExtensionStatus.MES_DISABLED -> DefaultRenderersFactory.EXTENSION_RENDERER_MODE_OFF
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else -> DefaultRenderersFactory.EXTENSION_RENDERER_MODE_ON
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}
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val dataSourceFactory = DefaultDataSource.Factory(context)
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val extractorsFactory = DefaultExtractorsFactory()
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var renderersFactory: RenderersFactory =
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WholphinRenderersFactory(context, decodeAv1)
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.setEnableDecoderFallback(true)
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.setExtensionRendererMode(rendererMode)
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val mediaSourceFactory =
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if (directPlayAss) {
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assHandler = AssHandler(AssRenderType.OVERLAY_OPEN_GL)
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val assSubtitleParserFactory = AssSubtitleParserFactory(assHandler)
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renderersFactory = AssRenderersFactory(assHandler, renderersFactory)
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DefaultMediaSourceFactory(
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dataSourceFactory,
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extractorsFactory.withAssMkvSupport(
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assSubtitleParserFactory,
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assHandler,
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),
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).setSubtitleParserFactory(assSubtitleParserFactory)
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} else {
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DefaultMediaSourceFactory(
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dataSourceFactory,
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extractorsFactory,
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)
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}
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ExoPlayer
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.Builder(context)
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.setRenderersFactory(
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WholphinRenderersFactory(context, decodeAv1)
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.setEnableDecoderFallback(true)
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.setExtensionRendererMode(rendererMode),
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).build()
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.setMediaSourceFactory(mediaSourceFactory)
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.setRenderersFactory(renderersFactory)
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.build()
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.apply {
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assHandler?.init(this)
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}
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}
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}
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currentPlayer = newPlayer
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return newPlayer
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return PlayerCreation(newPlayer, assHandler)
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}
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}
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@ -157,6 +135,11 @@ val Player.isReleased: Boolean
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}
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}
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data class PlayerCreation(
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val player: Player,
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val assHandler: AssHandler? = null,
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)
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// Code is adapted from https://github.com/androidx/media/blob/release/libraries/exoplayer/src/main/java/androidx/media3/exoplayer/DefaultRenderersFactory.java#L436
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class WholphinRenderersFactory(
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context: Context,
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