pullChunkBytes method

Future<LSLChunk<Uint8List>> pullChunkBytes({ int maxSamples = 512, double timeout = 0.0, })

Pulls a chunk of a string stream as raw bytes.

The binary counterpart of pullChunk (via lsl_pull_chunk_buf).

liblsl keeps pulling until maxSamples samples have been read or timeout expires, so a nonzero timeout with a maxSamples larger than what arrives always waits the full timeout. Use timeout: 0.0 to take only what is already buffered.

Implementation

Future<LSLChunk<Uint8List>> pullChunkBytes({
  int maxSamples = 512,
  double timeout = 0.0,
}) async {
  if (!_useIsolates) {
    return _pullChunkBytesDirect(maxSamples, timeout);
  }
  final buf = _binaryChunkBuffer(maxSamples);
  try {
    final response = await _isolateManagerBang.sendMessage(
      LSLMessage(LSLMessageType.pullChunkBytes, {
        'buffer': buf.addresses,
        'channels': streamInfo.channelCount,
        'timeout': timeout,
      }),
      timeoutSeconds: timeout + 30,
    );
    if (!response.success) {
      throw LSLException('Error pulling binary chunk: ${response.error}');
    }
    return _binaryChunkFromBuffer(buf, response.result as int);
  } finally {
    buf.free();
  }
}