Class FragmentedMp4Extractor

  • All Implemented Interfaces:
    Extractor

    public class FragmentedMp4Extractor
    extends Object
    implements Extractor
    Extracts data from the FMP4 container format.
    • Field Detail

      • FLAG_WORKAROUND_EVERY_VIDEO_FRAME_IS_SYNC_FRAME

        public static final int FLAG_WORKAROUND_EVERY_VIDEO_FRAME_IS_SYNC_FRAME
        Flag to work around an issue in some video streams where every frame is marked as a sync frame. The workaround overrides the sync frame flags in the stream, forcing them to false except for the first sample in each segment.

        This flag does nothing if the stream is not a video stream.

        See Also:
        Constant Field Values
      • FLAG_WORKAROUND_IGNORE_TFDT_BOX

        public static final int FLAG_WORKAROUND_IGNORE_TFDT_BOX
        Flag to ignore any tfdt boxes in the stream.
        See Also:
        Constant Field Values
      • FLAG_ENABLE_EMSG_TRACK

        public static final int FLAG_ENABLE_EMSG_TRACK
        Flag to indicate that the extractor should output an event message metadata track. Any event messages in the stream will be delivered as samples to this track.
        See Also:
        Constant Field Values
      • FLAG_WORKAROUND_IGNORE_EDIT_LISTS

        public static final int FLAG_WORKAROUND_IGNORE_EDIT_LISTS
        Flag to ignore any edit lists in the stream.
        See Also:
        Constant Field Values
    • Constructor Detail

      • FragmentedMp4Extractor

        public FragmentedMp4Extractor()
      • FragmentedMp4Extractor

        public FragmentedMp4Extractor​(@Flags
                                      int flags)
        Parameters:
        flags - Flags that control the extractor's behavior.
      • FragmentedMp4Extractor

        public FragmentedMp4Extractor​(@Flags
                                      int flags,
                                      @Nullable
                                      TimestampAdjuster timestampAdjuster)
        Parameters:
        flags - Flags that control the extractor's behavior.
        timestampAdjuster - Adjusts sample timestamps. May be null if no adjustment is needed.
      • FragmentedMp4Extractor

        public FragmentedMp4Extractor​(@Flags
                                      int flags,
                                      @Nullable
                                      TimestampAdjuster timestampAdjuster,
                                      @Nullable
                                      Track sideloadedTrack)
        Parameters:
        flags - Flags that control the extractor's behavior.
        timestampAdjuster - Adjusts sample timestamps. May be null if no adjustment is needed.
        sideloadedTrack - Sideloaded track information, in the case that the extractor will not receive a moov box in the input data. Null if a moov box is expected.
      • FragmentedMp4Extractor

        public FragmentedMp4Extractor​(@Flags
                                      int flags,
                                      @Nullable
                                      TimestampAdjuster timestampAdjuster,
                                      @Nullable
                                      Track sideloadedTrack,
                                      List<Format> closedCaptionFormats)
        Parameters:
        flags - Flags that control the extractor's behavior.
        timestampAdjuster - Adjusts sample timestamps. May be null if no adjustment is needed.
        sideloadedTrack - Sideloaded track information, in the case that the extractor will not receive a moov box in the input data. Null if a moov box is expected.
        closedCaptionFormats - For tracks that contain SEI messages, the formats of the closed caption channels to expose.
      • FragmentedMp4Extractor

        public FragmentedMp4Extractor​(@Flags
                                      int flags,
                                      @Nullable
                                      TimestampAdjuster timestampAdjuster,
                                      @Nullable
                                      Track sideloadedTrack,
                                      List<Format> closedCaptionFormats,
                                      @Nullable
                                      TrackOutput additionalEmsgTrackOutput)
        Parameters:
        flags - Flags that control the extractor's behavior.
        timestampAdjuster - Adjusts sample timestamps. May be null if no adjustment is needed.
        sideloadedTrack - Sideloaded track information, in the case that the extractor will not receive a moov box in the input data. Null if a moov box is expected.
        closedCaptionFormats - For tracks that contain SEI messages, the formats of the closed caption channels to expose.
        additionalEmsgTrackOutput - An extra track output that will receive all emsg messages targeting the player, even if FLAG_ENABLE_EMSG_TRACK is not set. Null if special handling of emsg messages for players is not required.
    • Method Detail

      • sniff

        public boolean sniff​(ExtractorInput input)
                      throws IOException
        Description copied from interface: Extractor
        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.

        Specified by:
        sniff in interface Extractor
        Parameters:
        input - The ExtractorInput from which data should be peeked/read.
        Returns:
        Whether this extractor can read the provided input.
        Throws:
        IOException - If an error occurred reading from the input.
      • seek

        public void seek​(long position,
                         long timeUs)
        Description copied from interface: Extractor
        Notifies the extractor that a seek has occurred.

        Following a call to this method, the ExtractorInput passed to the next invocation of Extractor.read(ExtractorInput, PositionHolder) 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.

        Specified by:
        seek in interface Extractor
        Parameters:
        position - The byte offset in the stream from which data will be provided.
        timeUs - The seek time in microseconds.
      • release

        public void release()
        Description copied from interface: Extractor
        Releases all kept resources.
        Specified by:
        release in interface Extractor
      • read

        public int read​(ExtractorInput input,
                        PositionHolder seekPosition)
                 throws IOException
        Description copied from interface: Extractor
        Extracts data read from a provided ExtractorInput. Must not be called before Extractor.init(ExtractorOutput).

        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, Extractor.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 Extractor.RESULT_SEEK is returned. If the extractor reached the end of the data provided by the ExtractorInput, then Extractor.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.

        Specified by:
        read in interface Extractor
        Parameters:
        input - The ExtractorInput from which data should be read.
        seekPosition - If Extractor.RESULT_SEEK is returned, this holder is updated to hold the position of the required data.
        Returns:
        One of the RESULT_ values defined in this interface.
        Throws:
        IOException - If an error occurred reading from or parsing the input.
      • modifyTrack

        @Nullable
        protected Track modifyTrack​(@Nullable
                                    Track track)