Method Detail

• addTransferListener

  void addTransferListener​(TransferListener transferListener)

  Adds a TransferListener to listen to data transfers. This method is not thread-safe.

  Parameters:

  transferListener - A TransferListener.

• open

  long open​(DataSpec dataSpec)
     throws IOException

  Opens the source to read the specified data. If an IOException is thrown, callers must still call close() to ensure that any partial effects of the invocation are cleaned up.

  The following edge case behaviors apply:

  • If the requested position is within the resource, but the requested length extends beyond the end of the resource, then open(com.google.android.exoplayer2.upstream.DataSpec) will succeed and data from the requested position to the end of the resource will be made available through DataReader.read(byte[], int, int).
  • If the requested position is equal to the length of the resource, then open(com.google.android.exoplayer2.upstream.DataSpec) will succeed, and DataReader.read(byte[], int, int) will immediately return C.RESULT_END_OF_INPUT.
  • If the requested position is greater than the length of the resource, then open(com.google.android.exoplayer2.upstream.DataSpec) will throw an IOException for which DataSourceException.isCausedByPositionOutOfRange(java.io.IOException) will be true.

  Parameters:

  dataSpec - Defines the data to be read.

  Returns:

  The number of bytes that can be read from the opened source. For unbounded requests (i.e., requests where DataSpec.length equals C.LENGTH_UNSET) this value is the resolved length of the request, or C.LENGTH_UNSET if the length is still unresolved. For all other requests, the value returned will be equal to the request's DataSpec.length.

  Throws:

  IOException - If an error occurs opening the source. DataSourceException can be thrown or used as a cause of the thrown exception to specify the reason of the error.

• getUri

  @Nullable
  Uri getUri()

  When the source is open, returns the Uri from which data is being read. The returned Uri will be identical to the one passed open(DataSpec) in the DataSpec unless redirection has occurred. If redirection has occurred, the Uri after redirection is returned.

  Returns:

  The Uri from which data is being read, or null if the source is not open.

• getResponseHeaders

  default Map<String,​List<String>> getResponseHeaders()

  When the source is open, returns the response headers associated with the last open(com.google.android.exoplayer2.upstream.DataSpec) call. Otherwise, returns an empty map.

  Key look-up in the returned map is case-insensitive.

• close

  void close()
      throws IOException

  Closes the source. This method must be called even if the corresponding call to open(DataSpec) threw an IOException.

  Throws:

  IOException - If an error occurs closing the source.