Field Detail

• FLAG_PEEK

  static final int FLAG_PEEK

  Specifies that the read position should not be advanced if a sample buffer is read.

  See Also:

  Constant Field Values

• FLAG_REQUIRE_FORMAT

  static final int FLAG_REQUIRE_FORMAT

  Specifies that if a sample buffer would normally be read next, the format of the stream should be read instead. In detail, the effect of this flag is as follows:

  • If a sample buffer would be read were the flag not set, then the stream format will be read instead.
  • If nothing would be read were the flag not set, then the stream format will be read if it's known. If the stream format is not known then behavior is unchanged.
  • If an end of stream buffer would be read were the flag not set, then behavior is unchanged.

  See Also:

  Constant Field Values

• FLAG_OMIT_SAMPLE_DATA

  static final int FLAG_OMIT_SAMPLE_DATA

  Specifies that DecoderInputBuffer.data, DecoderInputBuffer.supplementalData and DecoderInputBuffer.cryptoInfo should not be populated when reading a sample buffer.

  This flag is useful for efficiently reading or (when combined with FLAG_PEEK) peeking sample metadata. It can also be used for efficiency by a caller wishing to skip a sample buffer.

  See Also:

  Constant Field Values

Method Detail

• isReady

  boolean isReady()

  Returns whether data is available to be read.

  Note: If the stream has ended then a buffer with the end of stream flag can always be read from readData(com.google.android.exoplayer2.FormatHolder, com.google.android.exoplayer2.decoder.DecoderInputBuffer, int). Hence an ended stream is always ready.

  Returns:

  Whether data is available to be read.

• maybeThrowError

  void maybeThrowError()
                throws IOException

  Throws an error that's preventing data from being read. Does nothing if no such error exists.

  Throws:

  IOException - The underlying error.

• readData

  @ReadDataResult
  int readData​(FormatHolder formatHolder,
               DecoderInputBuffer buffer,
               @ReadFlags
               int readFlags)

  Attempts to read from the stream.

  If the stream has ended then C.BUFFER_FLAG_END_OF_STREAM flag is set on buffer and C.RESULT_BUFFER_READ is returned. Else if no data is available then C.RESULT_NOTHING_READ is returned. Else if the format of the media is changing or if formatRequired is set then formatHolder is populated and C.RESULT_FORMAT_READ is returned. Else buffer is populated and C.RESULT_BUFFER_READ is returned.

  Parameters:

  formatHolder - A FormatHolder to populate in the case of reading a format.

  buffer - A DecoderInputBuffer to populate in the case of reading a sample or the end of the stream. If the end of the stream has been reached, the C.BUFFER_FLAG_END_OF_STREAM flag will be set on the buffer.

  readFlags - Flags controlling the behavior of this read operation.

  Returns:

  The result of the read operation.

  Throws:

  DecoderInputBuffer.InsufficientCapacityException - If the buffer has insufficient capacity to hold the data of a sample being read. The buffer timestamp and flags are populated if this exception is thrown, but the read position is not advanced.

• skipData

  int skipData​(long positionUs)

  Attempts to skip to the keyframe before the specified position, or to the end of the stream if positionUs is beyond it.

  Parameters:

  positionUs - The specified time.

  Returns:

  The number of samples that were skipped.