Package org.mp4parser.boxes.iso14496.part12

Class TimeToSampleBox

java.lang.Object
org.mp4parser.support.AbstractBox
org.mp4parser.support.AbstractFullBox
org.mp4parser.boxes.iso14496.part12.TimeToSampleBox
All Implemented Interfaces:
Box, FullBox, ParsableBox
public class TimeToSampleBox extends AbstractFullBox

4cc = ""stts""

This box contains a compact version of a table that allows indexing from decoding time to sample number. Other tables give sample sizes and pointers, from the sample number. Each entry in the table gives the number of consecutive samples with the same time delta, and the delta of those samples. By adding the deltas a complete time-to-sample map may be built.
The Decoding Time to Sample Box contains decode time delta's: DT(n+1) = DT(n) + STTS(n) where STTS(n) is the (uncompressed) table entry for sample n.
The sample entries are ordered by decoding time stamps; therefore the deltas are all non-negative.
The DT axis has a zero origin; DT(i) = SUM(for j=0 to i-1 of delta(j)), and the sum of all deltas gives the length of the media in the track (not mapped to the overall timescale, and not considering any edit list).
The Edit List Box provides the initial CT value if it is non-empty (non-zero).

  • Field Details

  • Constructor Details

    • TimeToSampleBox

      public TimeToSampleBox()

  • Method Details

    • blowupTimeToSamples

      public static long[] blowupTimeToSamples(List<TimeToSampleBox.Entry> entries)
      Decompresses the list of entries and returns the list of decoding times.
      Parameters:
      entries - compressed entries
      Returns:
      decoding time per sample

    • getContentSize

      protected long getContentSize()
      Description copied from class: AbstractBox
      Get the box's content size without its header. This must be the exact number of bytes that getContent(ByteBuffer) writes.
      Specified by:
      getContentSize in class AbstractBox
      Returns:
      Gets the box's content size in bytes
      See Also:

    • _parseDetails

      public void _parseDetails(ByteBuffer content)
      Description copied from class: AbstractBox
      Parse the box's fields and child boxes if any.
      Specified by:
      _parseDetails in class AbstractBox
      Parameters:
      content - the box's raw content beginning after the 4-cc field.

    • getContent

      protected void getContent(ByteBuffer byteBuffer)
      Description copied from class: AbstractBox
      Write the box's content into the given ByteBuffer. This must include flags and version in case of a full box. byteBuffer has been initialized with getSize() bytes.
      Specified by:
      getContent in class AbstractBox
      Parameters:
      byteBuffer - the sink for the box's content

    • getEntries

      public List<TimeToSampleBox.Entry> getEntries()

    • setEntries

      public void setEntries(List<TimeToSampleBox.Entry> entries)

    • toString

      public String toString()
      Overrides:
      toString in class Object