MatroskaExtractor

const val FLAG_DISABLE_SEEK_FOR_CUES = 1: Int

Flag to disable seeking for cues.

Normally (i.e. when this flag is not set) the extractor will seek to the cues element if its position is specified in the seek head and if it's after the first cluster. Setting this flag disables seeking to the cues element. If the cues element is after the first cluster then the media is treated as being unseekable.

const val FLAG_EMIT_RAW_SUBTITLE_DATA = 2: Int

Flag to use the source subtitle formats without modification. If unset, subtitles will be transcoded to APPLICATION_MEDIA3_CUES during extraction.

MatroskaExtractor(subtitleParserFactory: SubtitleParser.Factory!)

Constructs an instance.

MatroskaExtractor(
    subtitleParserFactory: SubtitleParser.Factory!,
    @MatroskaExtractor.Flags flags: Int
)

Constructs an instance.

fun init(output: ExtractorOutput!): Unit

Initializes the extractor with an ExtractorOutput. Called at most once.

java-static fun newFactory(subtitleParserFactory: SubtitleParser.Factory!): ExtractorsFactory!

Creates a factory for MatroskaExtractor instances with the provided SubtitleParser.Factory.

fun read(input: ExtractorInput!, seekPosition: PositionHolder!): Int

Extracts data read from a provided ExtractorInput. Must not be called before init.

A single call to this method will block until some progress has been made, but will not block for longer than this. Hence each call will consume only a small amount of input data.

In the common case, RESULT_CONTINUE is returned to indicate that the ExtractorInput passed to the next read is required to provide data continuing from the position in the stream reached by the returning call. If the extractor requires data to be provided from a different position, then that position is set in seekPosition and RESULT_SEEK is returned. If the extractor reached the end of the data provided by the ExtractorInput, then RESULT_END_OF_INPUT is returned.

When this method throws an IOException, extraction may continue by providing an ExtractorInput with an unchanged read position to a subsequent call to this method.

fun release(): Unit

Releases all kept resources.

@CallSuper
fun seek(position: Long, timeUs: Long): Unit

Notifies the extractor that a seek has occurred.

Following a call to this method, the ExtractorInput passed to the next invocation of read is required to provide data starting from position in the stream. Valid random access positions are the start of the stream and positions that can be obtained from any SeekMap passed to the ExtractorOutput.

fun sniff(input: ExtractorInput!): Boolean

Returns whether this extractor can extract samples from the ExtractorInput, which must provide data from the start of the stream.

If true is returned, the input's reading position may have been modified. Otherwise, only its peek position may have been modified.

@CallSuper
protected fun binaryElement(id: Int, contentSize: Int, input: ExtractorInput!): Unit

Called when a binary element is encountered.

@CallSuper
protected fun endMasterElement(id: Int): Unit

Called when the end of a master element is encountered.

@CallSuper
protected fun floatElement(id: Int, value: Double): Unit

Called when a float element is encountered.

protected fun getCurrentTrack(currentElementId: Int): MatroskaExtractor.Track!

Returns the track corresponding to the current TrackEntry element.

@CallSuper
@EbmlProcessor.ElementType
protected fun getElementType(id: Int): Int

Maps an element ID to a corresponding type.

@CallSuper
protected fun integerElement(id: Int, value: Long): Unit

Called when an integer element is encountered.

@CallSuper
protected fun isLevel1Element(id: Int): Boolean

Checks if the given id is that of a level 1 element.

@CallSuper
protected fun startMasterElement(id: Int, contentPosition: Long, contentSize: Long): Unit

Called when the start of a master element is encountered.

@CallSuper
protected fun stringElement(id: Int, value: String!): Unit

Called when a string element is encountered.