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Better subtitle decoding :)

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Lag 2023-03-17 16:23:03 +01:00
parent cc99899cf1
commit 019399952f
1 changed files with 38 additions and 30 deletions
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68
app/src/main/java/com/lagradost/cloudstream3/ui/player/CustomSubtitleDecoderFactory.kt
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@ -4,13 +4,16 @@ import android.content.Context
import android.util.Log
import androidx.preference.PreferenceManager
import com.google.android.exoplayer2.Format
import com.google.android.exoplayer2.text.SubtitleDecoder
import com.google.android.exoplayer2.text.SubtitleDecoderFactory
import com.google.android.exoplayer2.text.SubtitleInputBuffer
import com.google.android.exoplayer2.text.SubtitleOutputBuffer
import com.google.android.exoplayer2.text.*
import com.google.android.exoplayer2.text.cea.Cea608Decoder
import com.google.android.exoplayer2.text.cea.Cea708Decoder
import com.google.android.exoplayer2.text.dvb.DvbDecoder
import com.google.android.exoplayer2.text.pgs.PgsDecoder
import com.google.android.exoplayer2.text.ssa.SsaDecoder
import com.google.android.exoplayer2.text.subrip.SubripDecoder
import com.google.android.exoplayer2.text.ttml.TtmlDecoder
import com.google.android.exoplayer2.text.tx3g.Tx3gDecoder
import com.google.android.exoplayer2.text.webvtt.Mp4WebvttDecoder
import com.google.android.exoplayer2.text.webvtt.WebvttDecoder
import com.google.android.exoplayer2.util.MimeTypes
import com.lagradost.cloudstream3.R
@ -19,7 +22,11 @@ import org.mozilla.universalchardet.UniversalDetector
import java.nio.ByteBuffer
import java.nio.charset.Charset
class CustomDecoder : SubtitleDecoder {
/**
* @param fallbackFormat used to create a decoder based on mimetype if the subtitle string is not
* enough to identify the subtitle format.
**/
class CustomDecoder(private val fallbackFormat: Format?) : SubtitleDecoder {
companion object {
fun updateForcedEncoding(context: Context) {
val settingsManager = PreferenceManager.getDefaultSharedPreferences(context)
@ -139,7 +146,7 @@ class CustomDecoder : SubtitleDecoder {
val inputString = getStr(inputBuffer)
if (realDecoder == null && !inputString.isNullOrBlank()) {
var str: String = inputString
// this way we read the subtitle file and decide what decoder to use instead of relying on mimetype
// this way we read the subtitle file and decide what decoder to use instead of relying fully on mimetype
Log.i(TAG, "Got data from queueInputBuffer")
//https://github.com/LagradOst/CloudStream-2/blob/ddd774ee66810137ff7bd65dae70bcf3ba2d2489/CloudStreamForms/CloudStreamForms/Script/MainChrome.cs#L388
realDecoder = when {
@ -148,8 +155,31 @@ class CustomDecoder : SubtitleDecoder {
(str.startsWith(
"[Script Info]",
ignoreCase = true
) || str.startsWith("Title:", ignoreCase = true)) -> SsaDecoder()
) || str.startsWith("Title:", ignoreCase = true)) -> SsaDecoder(fallbackFormat?.initializationData)
str.startsWith("1", ignoreCase = true) -> SubripDecoder()
fallbackFormat != null -> {
when (val mimeType = fallbackFormat.sampleMimeType) {
MimeTypes.TEXT_VTT -> WebvttDecoder()
MimeTypes.TEXT_SSA -> SsaDecoder(fallbackFormat.initializationData)
MimeTypes.APPLICATION_MP4VTT -> Mp4WebvttDecoder()
MimeTypes.APPLICATION_TTML -> TtmlDecoder()
MimeTypes.APPLICATION_SUBRIP -> SubripDecoder()
MimeTypes.APPLICATION_TX3G -> Tx3gDecoder(fallbackFormat.initializationData)
MimeTypes.APPLICATION_CEA608, MimeTypes.APPLICATION_MP4CEA608 -> Cea608Decoder(
mimeType,
fallbackFormat.accessibilityChannel,
Cea608Decoder.MIN_DATA_CHANNEL_TIMEOUT_MS
)
MimeTypes.APPLICATION_CEA708 -> Cea708Decoder(
fallbackFormat.accessibilityChannel,
fallbackFormat.initializationData
)
MimeTypes.APPLICATION_DVBSUBS -> DvbDecoder(fallbackFormat.initializationData)
MimeTypes.APPLICATION_PGS -> PgsDecoder()
MimeTypes.TEXT_EXOPLAYER_CUES -> ExoplayerCuesDecoder()
else -> null
}
}
else -> null
}
Log.i(
@ -246,28 +276,6 @@ class CustomSubtitleDecoderFactory : SubtitleDecoderFactory {
}
override fun createDecoder(format: Format): SubtitleDecoder {
return CustomDecoder()
//return when (val mimeType = format.sampleMimeType) {
// MimeTypes.TEXT_VTT -> WebvttDecoder()
// MimeTypes.TEXT_SSA -> SsaDecoder(format.initializationData)
// MimeTypes.APPLICATION_MP4VTT -> Mp4WebvttDecoder()
// MimeTypes.APPLICATION_TTML -> TtmlDecoder()
// MimeTypes.APPLICATION_SUBRIP -> SubripDecoder()
// MimeTypes.APPLICATION_TX3G -> Tx3gDecoder(format.initializationData)
// MimeTypes.APPLICATION_CEA608, MimeTypes.APPLICATION_MP4CEA608 -> return Cea608Decoder(
// mimeType,
// format.accessibilityChannel,
// Cea608Decoder.MIN_DATA_CHANNEL_TIMEOUT_MS
// )
// MimeTypes.APPLICATION_CEA708 -> Cea708Decoder(
// format.accessibilityChannel,
// format.initializationData
// )
// MimeTypes.APPLICATION_DVBSUBS -> DvbDecoder(format.initializationData)
// MimeTypes.APPLICATION_PGS -> PgsDecoder()
// MimeTypes.TEXT_EXOPLAYER_CUES -> ExoplayerCuesDecoder()
// // Default WebVttDecoder
// else -> WebvttDecoder()
//}
return CustomDecoder(format)
}
}