265 lines
10 KiB
Kotlin
265 lines
10 KiB
Kotlin
package com.lagradost.cloudstream3.ui.player
|
|
|
|
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.ssa.SsaDecoder
|
|
import com.google.android.exoplayer2.text.subrip.SubripDecoder
|
|
import com.google.android.exoplayer2.text.ttml.TtmlDecoder
|
|
import com.google.android.exoplayer2.text.webvtt.WebvttDecoder
|
|
import com.google.android.exoplayer2.util.MimeTypes
|
|
import com.lagradost.cloudstream3.R
|
|
import com.lagradost.cloudstream3.mvvm.logError
|
|
import org.mozilla.universalchardet.UniversalDetector
|
|
import java.nio.ByteBuffer
|
|
import java.nio.charset.Charset
|
|
|
|
class CustomDecoder : SubtitleDecoder {
|
|
companion object {
|
|
fun updateForcedEncoding(context: Context) {
|
|
val settingsManager = PreferenceManager.getDefaultSharedPreferences(context)
|
|
val value = settingsManager.getString(
|
|
context.getString(R.string.subtitles_encoding_key),
|
|
null
|
|
)
|
|
overrideEncoding = if (value.isNullOrBlank()) {
|
|
null
|
|
} else {
|
|
value
|
|
}
|
|
}
|
|
|
|
private const val UTF_8 = "UTF-8"
|
|
private const val TAG = "CustomDecoder"
|
|
private var overrideEncoding: String? = null
|
|
var regexSubtitlesToRemoveCaptions = false
|
|
var regexSubtitlesToRemoveBloat = false
|
|
val bloatRegex =
|
|
listOf(
|
|
Regex(
|
|
"""Support\s+us\s+and\s+become\s+VIP\s+member\s+to\s+remove\s+all\s+ads\s+from\s+(www\.|)OpenSubtitles(\.org|)""",
|
|
RegexOption.IGNORE_CASE
|
|
),
|
|
Regex(
|
|
"""Please\s+rate\s+this\s+subtitle\s+at\s+.*\s+Help\s+other\s+users\s+to\s+choose\s+the\s+best\s+subtitles""",
|
|
RegexOption.IGNORE_CASE
|
|
),
|
|
Regex(
|
|
"""Contact\s(www\.|)OpenSubtitles(\.org|)\s+today""",
|
|
RegexOption.IGNORE_CASE
|
|
),
|
|
Regex(
|
|
"""Advertise\s+your\s+product\s+or\s+brand\s+here""",
|
|
RegexOption.IGNORE_CASE
|
|
),
|
|
)
|
|
val captionRegex = listOf(Regex("""(-\s?|)[\[({][\w\d\s]*?[])}]\s*"""))
|
|
|
|
//https://emptycharacter.com/
|
|
//https://www.fileformat.info/info/unicode/char/200b/index.htm
|
|
fun trimStr(string: String): String {
|
|
return string.trimStart().trim('\uFEFF', '\u200B').replace(
|
|
Regex("[\u00A0\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u205F]"),
|
|
" "
|
|
)
|
|
}
|
|
}
|
|
|
|
private var realDecoder: SubtitleDecoder? = null
|
|
|
|
override fun getName(): String {
|
|
return realDecoder?.name ?: this::class.java.name
|
|
}
|
|
|
|
override fun dequeueInputBuffer(): SubtitleInputBuffer {
|
|
Log.i(TAG, "dequeueInputBuffer")
|
|
return realDecoder?.dequeueInputBuffer() ?: SubtitleInputBuffer()
|
|
}
|
|
|
|
private fun getStr(byteArray: ByteArray): Pair<String, Charset> {
|
|
val encoding = try {
|
|
val encoding = overrideEncoding ?: run {
|
|
val detector = UniversalDetector()
|
|
|
|
detector.handleData(byteArray, 0, byteArray.size)
|
|
detector.dataEnd()
|
|
|
|
detector.detectedCharset // "windows-1256"
|
|
}
|
|
|
|
Log.i(
|
|
TAG,
|
|
"Detected encoding with charset $encoding and override = $overrideEncoding"
|
|
)
|
|
encoding ?: UTF_8
|
|
} catch (e: Exception) {
|
|
Log.e(TAG, "Failed to detect encoding throwing error")
|
|
logError(e)
|
|
UTF_8
|
|
}
|
|
|
|
return try {
|
|
val set = charset(encoding)
|
|
Pair(String(byteArray, set), set)
|
|
} catch (e: Exception) {
|
|
Log.e(TAG, "Failed to parse using encoding $encoding")
|
|
logError(e)
|
|
Pair(byteArray.decodeToString(), charset(UTF_8))
|
|
}
|
|
}
|
|
|
|
private fun getStr(input: SubtitleInputBuffer): String? {
|
|
try {
|
|
val data = input.data ?: return null
|
|
data.position(0)
|
|
val fullDataArr = ByteArray(data.remaining())
|
|
data.get(fullDataArr)
|
|
return trimStr(getStr(fullDataArr).first)
|
|
} catch (e: Exception) {
|
|
Log.e(TAG, "Failed to parse text returning plain data")
|
|
logError(e)
|
|
return null
|
|
}
|
|
}
|
|
|
|
override fun queueInputBuffer(inputBuffer: SubtitleInputBuffer) {
|
|
Log.i(TAG, "queueInputBuffer")
|
|
try {
|
|
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
|
|
Log.i(TAG, "Got data from queueInputBuffer")
|
|
//https://github.com/LagradOst/CloudStream-2/blob/ddd774ee66810137ff7bd65dae70bcf3ba2d2489/CloudStreamForms/CloudStreamForms/Script/MainChrome.cs#L388
|
|
realDecoder = when {
|
|
str.startsWith("WEBVTT", ignoreCase = true) -> WebvttDecoder()
|
|
str.startsWith("<?xml version=\"", ignoreCase = true) -> TtmlDecoder()
|
|
(str.startsWith(
|
|
"[Script Info]",
|
|
ignoreCase = true
|
|
) || str.startsWith("Title:", ignoreCase = true)) -> SsaDecoder()
|
|
str.startsWith("1", ignoreCase = true) -> SubripDecoder()
|
|
else -> null
|
|
}
|
|
Log.i(
|
|
TAG,
|
|
"Decoder selected: $realDecoder"
|
|
)
|
|
realDecoder?.let { decoder ->
|
|
decoder.dequeueInputBuffer()?.let { buff ->
|
|
if (decoder::class.java != SsaDecoder::class.java) {
|
|
if (regexSubtitlesToRemoveCaptions)
|
|
captionRegex.forEach { rgx ->
|
|
str = str.replace(rgx, "\n")
|
|
}
|
|
if (regexSubtitlesToRemoveBloat)
|
|
bloatRegex.forEach { rgx ->
|
|
str = str.replace(rgx, "\n")
|
|
}
|
|
}
|
|
buff.data = ByteBuffer.wrap(str.toByteArray(charset(UTF_8)))
|
|
|
|
decoder.queueInputBuffer(buff)
|
|
Log.i(
|
|
TAG,
|
|
"Decoder queueInputBuffer successfully"
|
|
)
|
|
}
|
|
CS3IPlayer.requestSubtitleUpdate?.invoke()
|
|
}
|
|
} else {
|
|
Log.i(
|
|
TAG,
|
|
"Decoder else queueInputBuffer successfully"
|
|
)
|
|
|
|
if (!inputString.isNullOrBlank()) {
|
|
var str: String = inputString
|
|
if (realDecoder!!::class.java != SsaDecoder::class.java) {
|
|
if (regexSubtitlesToRemoveCaptions)
|
|
captionRegex.forEach { rgx ->
|
|
str = str.replace(rgx, "\n")
|
|
}
|
|
if (regexSubtitlesToRemoveBloat)
|
|
bloatRegex.forEach { rgx ->
|
|
str = str.replace(rgx, "\n")
|
|
}
|
|
}
|
|
inputBuffer.data = ByteBuffer.wrap(str.toByteArray(charset(UTF_8)))
|
|
}
|
|
|
|
realDecoder?.queueInputBuffer(inputBuffer)
|
|
}
|
|
} catch (e: Exception) {
|
|
logError(e)
|
|
}
|
|
}
|
|
|
|
override fun dequeueOutputBuffer(): SubtitleOutputBuffer? {
|
|
return realDecoder?.dequeueOutputBuffer()
|
|
}
|
|
|
|
override fun flush() {
|
|
realDecoder?.flush()
|
|
}
|
|
|
|
override fun release() {
|
|
realDecoder?.release()
|
|
}
|
|
|
|
override fun setPositionUs(positionUs: Long) {
|
|
realDecoder?.setPositionUs(positionUs)
|
|
}
|
|
}
|
|
|
|
/** See https://github.com/google/ExoPlayer/blob/release-v2/library/core/src/main/java/com/google/android/exoplayer2/text/SubtitleDecoderFactory.java */
|
|
class CustomSubtitleDecoderFactory : SubtitleDecoderFactory {
|
|
override fun supportsFormat(format: Format): Boolean {
|
|
// return SubtitleDecoderFactory.DEFAULT.supportsFormat(format)
|
|
return listOf(
|
|
MimeTypes.TEXT_VTT,
|
|
MimeTypes.TEXT_SSA,
|
|
MimeTypes.APPLICATION_TTML,
|
|
MimeTypes.APPLICATION_MP4VTT,
|
|
MimeTypes.APPLICATION_SUBRIP,
|
|
//MimeTypes.APPLICATION_TX3G,
|
|
//MimeTypes.APPLICATION_CEA608,
|
|
//MimeTypes.APPLICATION_MP4CEA608,
|
|
//MimeTypes.APPLICATION_CEA708,
|
|
//MimeTypes.APPLICATION_DVBSUBS,
|
|
//MimeTypes.APPLICATION_PGS,
|
|
//MimeTypes.TEXT_EXOPLAYER_CUES
|
|
).contains(format.sampleMimeType)
|
|
}
|
|
|
|
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()
|
|
//}
|
|
}
|
|
} |